diff options
Diffstat (limited to 'drivers/mmc')
71 files changed, 6803 insertions, 2893 deletions
diff --git a/drivers/mmc/card/Kconfig b/drivers/mmc/card/Kconfig index 3b1f783bf924..5562308699bc 100644 --- a/drivers/mmc/card/Kconfig +++ b/drivers/mmc/card/Kconfig @@ -52,6 +52,7 @@ config MMC_BLOCK_BOUNCE config SDIO_UART tristate "SDIO UART/GPS class support" + depends on TTY help SDIO function driver for SDIO cards that implements the UART class, as well as the GPS class which appears like a UART. diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index 172a768036d8..5bab73b91c20 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -57,6 +57,13 @@ MODULE_ALIAS("mmc:block"); #define INAND_CMD38_ARG_SECERASE 0x80 #define INAND_CMD38_ARG_SECTRIM1 0x81 #define INAND_CMD38_ARG_SECTRIM2 0x88 +#define MMC_BLK_TIMEOUT_MS (10 * 60 * 1000) /* 10 minute timeout */ + +#define mmc_req_rel_wr(req) (((req->cmd_flags & REQ_FUA) || \ + (req->cmd_flags & REQ_META)) && \ + (rq_data_dir(req) == WRITE)) +#define PACKED_CMD_VER 0x01 +#define PACKED_CMD_WR 0x02 static DEFINE_MUTEX(block_mutex); @@ -88,6 +95,7 @@ struct mmc_blk_data { unsigned int flags; #define MMC_BLK_CMD23 (1 << 0) /* Can do SET_BLOCK_COUNT for multiblock */ #define MMC_BLK_REL_WR (1 << 1) /* MMC Reliable write support */ +#define MMC_BLK_PACKED_CMD (1 << 2) /* MMC packed command support */ unsigned int usage; unsigned int read_only; @@ -112,20 +120,32 @@ struct mmc_blk_data { static DEFINE_MUTEX(open_lock); -enum mmc_blk_status { - MMC_BLK_SUCCESS = 0, - MMC_BLK_PARTIAL, - MMC_BLK_CMD_ERR, - MMC_BLK_RETRY, - MMC_BLK_ABORT, - MMC_BLK_DATA_ERR, - MMC_BLK_ECC_ERR, - MMC_BLK_NOMEDIUM, +enum { + MMC_PACKED_NR_IDX = -1, + MMC_PACKED_NR_ZERO, + MMC_PACKED_NR_SINGLE, }; module_param(perdev_minors, int, 0444); MODULE_PARM_DESC(perdev_minors, "Minors numbers to allocate per device"); +static inline int mmc_blk_part_switch(struct mmc_card *card, + struct mmc_blk_data *md); +static int get_card_status(struct mmc_card *card, u32 *status, int retries); + +static inline void mmc_blk_clear_packed(struct mmc_queue_req *mqrq) +{ + struct mmc_packed *packed = mqrq->packed; + + BUG_ON(!packed); + + mqrq->cmd_type = MMC_PACKED_NONE; + packed->nr_entries = MMC_PACKED_NR_ZERO; + packed->idx_failure = MMC_PACKED_NR_IDX; + packed->retries = 0; + packed->blocks = 0; +} + static struct mmc_blk_data *mmc_blk_get(struct gendisk *disk) { struct mmc_blk_data *md; @@ -357,6 +377,38 @@ out: return ERR_PTR(err); } +static int ioctl_rpmb_card_status_poll(struct mmc_card *card, u32 *status, + u32 retries_max) +{ + int err; + u32 retry_count = 0; + + if (!status || !retries_max) + return -EINVAL; + + do { + err = get_card_status(card, status, 5); + if (err) + break; + + if (!R1_STATUS(*status) && + (R1_CURRENT_STATE(*status) != R1_STATE_PRG)) + break; /* RPMB programming operation complete */ + + /* + * Rechedule to give the MMC device a chance to continue + * processing the previous command without being polled too + * frequently. + */ + usleep_range(1000, 5000); + } while (++retry_count < retries_max); + + if (retry_count == retries_max) + err = -EPERM; + + return err; +} + static int mmc_blk_ioctl_cmd(struct block_device *bdev, struct mmc_ioc_cmd __user *ic_ptr) { @@ -368,6 +420,8 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev, struct mmc_request mrq = {NULL}; struct scatterlist sg; int err; + int is_rpmb = false; + u32 status = 0; /* * The caller must have CAP_SYS_RAWIO, and must be calling this on the @@ -387,6 +441,9 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev, goto cmd_err; } + if (md->area_type & MMC_BLK_DATA_AREA_RPMB) + is_rpmb = true; + card = md->queue.card; if (IS_ERR(card)) { err = PTR_ERR(card); @@ -437,12 +494,23 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev, mmc_claim_host(card->host); + err = mmc_blk_part_switch(card, md); + if (err) + goto cmd_rel_host; + if (idata->ic.is_acmd) { err = mmc_app_cmd(card->host, card); if (err) goto cmd_rel_host; } + if (is_rpmb) { + err = mmc_set_blockcount(card, data.blocks, + idata->ic.write_flag & (1 << 31)); + if (err) + goto cmd_rel_host; + } + mmc_wait_for_req(card->host, &mrq); if (cmd.error) { @@ -478,6 +546,18 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev, } } + if (is_rpmb) { + /* + * Ensure RPMB command has completed by polling CMD13 + * "Send Status". + */ + err = ioctl_rpmb_card_status_poll(card, &status, 5); + if (err) + dev_err(mmc_dev(card->host), + "%s: Card Status=0x%08X, error %d\n", + __func__, status, err); + } + cmd_rel_host: mmc_release_host(card->host); @@ -1034,6 +1114,9 @@ static int mmc_blk_err_check(struct mmc_card *card, */ if (!mmc_host_is_spi(card->host) && rq_data_dir(req) != READ) { u32 status; + unsigned long timeout; + + timeout = jiffies + msecs_to_jiffies(MMC_BLK_TIMEOUT_MS); do { int err = get_card_status(card, &status, 5); if (err) { @@ -1041,6 +1124,17 @@ static int mmc_blk_err_check(struct mmc_card *card, req->rq_disk->disk_name, err); return MMC_BLK_CMD_ERR; } + + /* Timeout if the device never becomes ready for data + * and never leaves the program state. + */ + if (time_after(jiffies, timeout)) { + pr_err("%s: Card stuck in programming state!"\ + " %s %s\n", mmc_hostname(card->host), + req->rq_disk->disk_name, __func__); + + return MMC_BLK_CMD_ERR; + } /* * Some cards mishandle the status bits, * so make sure to check both the busy @@ -1069,12 +1163,78 @@ static int mmc_blk_err_check(struct mmc_card *card, if (!brq->data.bytes_xfered) return MMC_BLK_RETRY; + if (mmc_packed_cmd(mq_mrq->cmd_type)) { + if (unlikely(brq->data.blocks << 9 != brq->data.bytes_xfered)) + return MMC_BLK_PARTIAL; + else + return MMC_BLK_SUCCESS; + } + if (blk_rq_bytes(req) != brq->data.bytes_xfered) return MMC_BLK_PARTIAL; return MMC_BLK_SUCCESS; } +static int mmc_blk_packed_err_check(struct mmc_card *card, + struct mmc_async_req *areq) +{ + struct mmc_queue_req *mq_rq = container_of(areq, struct mmc_queue_req, + mmc_active); + struct request *req = mq_rq->req; + struct mmc_packed *packed = mq_rq->packed; + int err, check, status; + u8 *ext_csd; + + BUG_ON(!packed); + + packed->retries--; + check = mmc_blk_err_check(card, areq); + err = get_card_status(card, &status, 0); + if (err) { + pr_err("%s: error %d sending status command\n", + req->rq_disk->disk_name, err); + return MMC_BLK_ABORT; + } + + if (status & R1_EXCEPTION_EVENT) { + ext_csd = kzalloc(512, GFP_KERNEL); + if (!ext_csd) { + pr_err("%s: unable to allocate buffer for ext_csd\n", + req->rq_disk->disk_name); + return -ENOMEM; + } + + err = mmc_send_ext_csd(card, ext_csd); + if (err) { + pr_err("%s: error %d sending ext_csd\n", + req->rq_disk->disk_name, err); + check = MMC_BLK_ABORT; + goto free; + } + + if ((ext_csd[EXT_CSD_EXP_EVENTS_STATUS] & + EXT_CSD_PACKED_FAILURE) && + (ext_csd[EXT_CSD_PACKED_CMD_STATUS] & + EXT_CSD_PACKED_GENERIC_ERROR)) { + if (ext_csd[EXT_CSD_PACKED_CMD_STATUS] & + EXT_CSD_PACKED_INDEXED_ERROR) { + packed->idx_failure = + ext_csd[EXT_CSD_PACKED_FAILURE_INDEX] - 1; + check = MMC_BLK_PARTIAL; + } + pr_err("%s: packed cmd failed, nr %u, sectors %u, " + "failure index: %d\n", + req->rq_disk->disk_name, packed->nr_entries, + packed->blocks, packed->idx_failure); + } +free: + kfree(ext_csd); + } + + return check; +} + static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq, struct mmc_card *card, int disable_multi, @@ -1229,10 +1389,221 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq, mmc_queue_bounce_pre(mqrq); } +static inline u8 mmc_calc_packed_hdr_segs(struct request_queue *q, + struct mmc_card *card) +{ + unsigned int hdr_sz = mmc_large_sector(card) ? 4096 : 512; + unsigned int max_seg_sz = queue_max_segment_size(q); + unsigned int len, nr_segs = 0; + + do { + len = min(hdr_sz, max_seg_sz); + hdr_sz -= len; + nr_segs++; + } while (hdr_sz); + + return nr_segs; +} + +static u8 mmc_blk_prep_packed_list(struct mmc_queue *mq, struct request *req) +{ + struct request_queue *q = mq->queue; + struct mmc_card *card = mq->card; + struct request *cur = req, *next = NULL; + struct mmc_blk_data *md = mq->data; + struct mmc_queue_req *mqrq = mq->mqrq_cur; + bool en_rel_wr = card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN; + unsigned int req_sectors = 0, phys_segments = 0; + unsigned int max_blk_count, max_phys_segs; + bool put_back = true; + u8 max_packed_rw = 0; + u8 reqs = 0; + + if (!(md->flags & MMC_BLK_PACKED_CMD)) + goto no_packed; + + if ((rq_data_dir(cur) == WRITE) && + mmc_host_packed_wr(card->host)) + max_packed_rw = card->ext_csd.max_packed_writes; + + if (max_packed_rw == 0) + goto no_packed; + + if (mmc_req_rel_wr(cur) && + (md->flags & MMC_BLK_REL_WR) && !en_rel_wr) + goto no_packed; + + if (mmc_large_sector(card) && + !IS_ALIGNED(blk_rq_sectors(cur), 8)) + goto no_packed; + + mmc_blk_clear_packed(mqrq); + + max_blk_count = min(card->host->max_blk_count, + card->host->max_req_size >> 9); + if (unlikely(max_blk_count > 0xffff)) + max_blk_count = 0xffff; + + max_phys_segs = queue_max_segments(q); + req_sectors += blk_rq_sectors(cur); + phys_segments += cur->nr_phys_segments; + + if (rq_data_dir(cur) == WRITE) { + req_sectors += mmc_large_sector(card) ? 8 : 1; + phys_segments += mmc_calc_packed_hdr_segs(q, card); + } + + do { + if (reqs >= max_packed_rw - 1) { + put_back = false; + break; + } + + spin_lock_irq(q->queue_lock); + next = blk_fetch_request(q); + spin_unlock_irq(q->queue_lock); + if (!next) { + put_back = false; + break; + } + + if (mmc_large_sector(card) && + !IS_ALIGNED(blk_rq_sectors(next), 8)) + break; + + if (next->cmd_flags & REQ_DISCARD || + next->cmd_flags & REQ_FLUSH) + break; + + if (rq_data_dir(cur) != rq_data_dir(next)) + break; + + if (mmc_req_rel_wr(next) && + (md->flags & MMC_BLK_REL_WR) && !en_rel_wr) + break; + + req_sectors += blk_rq_sectors(next); + if (req_sectors > max_blk_count) + break; + + phys_segments += next->nr_phys_segments; + if (phys_segments > max_phys_segs) + break; + + list_add_tail(&next->queuelist, &mqrq->packed->list); + cur = next; + reqs++; + } while (1); + + if (put_back) { + spin_lock_irq(q->queue_lock); + blk_requeue_request(q, next); + spin_unlock_irq(q->queue_lock); + } + + if (reqs > 0) { + list_add(&req->queuelist, &mqrq->packed->list); + mqrq->packed->nr_entries = ++reqs; + mqrq->packed->retries = reqs; + return reqs; + } + +no_packed: + mqrq->cmd_type = MMC_PACKED_NONE; + return 0; +} + +static void mmc_blk_packed_hdr_wrq_prep(struct mmc_queue_req *mqrq, + struct mmc_card *card, + struct mmc_queue *mq) +{ + struct mmc_blk_request *brq = &mqrq->brq; + struct request *req = mqrq->req; + struct request *prq; + struct mmc_blk_data *md = mq->data; + struct mmc_packed *packed = mqrq->packed; + bool do_rel_wr, do_data_tag; + u32 *packed_cmd_hdr; + u8 hdr_blocks; + u8 i = 1; + + BUG_ON(!packed); + + mqrq->cmd_type = MMC_PACKED_WRITE; + packed->blocks = 0; + packed->idx_failure = MMC_PACKED_NR_IDX; + + packed_cmd_hdr = packed->cmd_hdr; + memset(packed_cmd_hdr, 0, sizeof(packed->cmd_hdr)); + packed_cmd_hdr[0] = (packed->nr_entries << 16) | + (PACKED_CMD_WR << 8) | PACKED_CMD_VER; + hdr_blocks = mmc_large_sector(card) ? 8 : 1; + + /* + * Argument for each entry of packed group + */ + list_for_each_entry(prq, &packed->list, queuelist) { + do_rel_wr = mmc_req_rel_wr(prq) && (md->flags & MMC_BLK_REL_WR); + do_data_tag = (card->ext_csd.data_tag_unit_size) && + (prq->cmd_flags & REQ_META) && + (rq_data_dir(prq) == WRITE) && + ((brq->data.blocks * brq->data.blksz) >= + card->ext_csd.data_tag_unit_size); + /* Argument of CMD23 */ + packed_cmd_hdr[(i * 2)] = + (do_rel_wr ? MMC_CMD23_ARG_REL_WR : 0) | + (do_data_tag ? MMC_CMD23_ARG_TAG_REQ : 0) | + blk_rq_sectors(prq); + /* Argument of CMD18 or CMD25 */ + packed_cmd_hdr[((i * 2)) + 1] = + mmc_card_blockaddr(card) ? + blk_rq_pos(prq) : blk_rq_pos(prq) << 9; + packed->blocks += blk_rq_sectors(prq); + i++; + } + + memset(brq, 0, sizeof(struct mmc_blk_request)); + brq->mrq.cmd = &brq->cmd; + brq->mrq.data = &brq->data; + brq->mrq.sbc = &brq->sbc; + brq->mrq.stop = &brq->stop; + + brq->sbc.opcode = MMC_SET_BLOCK_COUNT; + brq->sbc.arg = MMC_CMD23_ARG_PACKED | (packed->blocks + hdr_blocks); + brq->sbc.flags = MMC_RSP_R1 | MMC_CMD_AC; + + brq->cmd.opcode = MMC_WRITE_MULTIPLE_BLOCK; + brq->cmd.arg = blk_rq_pos(req); + if (!mmc_card_blockaddr(card)) + brq->cmd.arg <<= 9; + brq->cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; + + brq->data.blksz = 512; + brq->data.blocks = packed->blocks + hdr_blocks; + brq->data.flags |= MMC_DATA_WRITE; + + brq->stop.opcode = MMC_STOP_TRANSMISSION; + brq->stop.arg = 0; + brq->stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC; + + mmc_set_data_timeout(&brq->data, card); + + brq->data.sg = mqrq->sg; + brq->data.sg_len = mmc_queue_map_sg(mq, mqrq); + + mqrq->mmc_active.mrq = &brq->mrq; + mqrq->mmc_active.err_check = mmc_blk_packed_err_check; + + mmc_queue_bounce_pre(mqrq); +} + static int mmc_blk_cmd_err(struct mmc_blk_data *md, struct mmc_card *card, struct mmc_blk_request *brq, struct request *req, int ret) { + struct mmc_queue_req *mq_rq; + mq_rq = container_of(brq, struct mmc_queue_req, brq); + /* * If this is an SD card and we're writing, we can first * mark the known good sectors as ok. @@ -1249,11 +1620,84 @@ static int mmc_blk_cmd_err(struct mmc_blk_data *md, struct mmc_card *card, ret = blk_end_request(req, 0, blocks << 9); } } else { - ret = blk_end_request(req, 0, brq->data.bytes_xfered); + if (!mmc_packed_cmd(mq_rq->cmd_type)) + ret = blk_end_request(req, 0, brq->data.bytes_xfered); + } + return ret; +} + +static int mmc_blk_end_packed_req(struct mmc_queue_req *mq_rq) +{ + struct request *prq; + struct mmc_packed *packed = mq_rq->packed; + int idx = packed->idx_failure, i = 0; + int ret = 0; + + BUG_ON(!packed); + + while (!list_empty(&packed->list)) { + prq = list_entry_rq(packed->list.next); + if (idx == i) { + /* retry from error index */ + packed->nr_entries -= idx; + mq_rq->req = prq; + ret = 1; + + if (packed->nr_entries == MMC_PACKED_NR_SINGLE) { + list_del_init(&prq->queuelist); + mmc_blk_clear_packed(mq_rq); + } + return ret; + } + list_del_init(&prq->queuelist); + blk_end_request(prq, 0, blk_rq_bytes(prq)); + i++; } + + mmc_blk_clear_packed(mq_rq); return ret; } +static void mmc_blk_abort_packed_req(struct mmc_queue_req *mq_rq) +{ + struct request *prq; + struct mmc_packed *packed = mq_rq->packed; + + BUG_ON(!packed); + + while (!list_empty(&packed->list)) { + prq = list_entry_rq(packed->list.next); + list_del_init(&prq->queuelist); + blk_end_request(prq, -EIO, blk_rq_bytes(prq)); + } + + mmc_blk_clear_packed(mq_rq); +} + +static void mmc_blk_revert_packed_req(struct mmc_queue *mq, + struct mmc_queue_req *mq_rq) +{ + struct request *prq; + struct request_queue *q = mq->queue; + struct mmc_packed *packed = mq_rq->packed; + + BUG_ON(!packed); + + while (!list_empty(&packed->list)) { + prq = list_entry_rq(packed->list.prev); + if (prq->queuelist.prev != &packed->list) { + list_del_init(&prq->queuelist); + spin_lock_irq(q->queue_lock); + blk_requeue_request(mq->queue, prq); + spin_unlock_irq(q->queue_lock); + } else { + list_del_init(&prq->queuelist); + } + } + + mmc_blk_clear_packed(mq_rq); +} + static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc) { struct mmc_blk_data *md = mq->data; @@ -1264,10 +1708,15 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc) struct mmc_queue_req *mq_rq; struct request *req = rqc; struct mmc_async_req *areq; + const u8 packed_nr = 2; + u8 reqs = 0; if (!rqc && !mq->mqrq_prev->req) return 0; + if (rqc) + reqs = mmc_blk_prep_packed_list(mq, rqc); + do { if (rqc) { /* @@ -1278,15 +1727,24 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc) (card->ext_csd.data_sector_size == 4096)) { pr_err("%s: Transfer size is not 4KB sector size aligned\n", req->rq_disk->disk_name); + mq_rq = mq->mqrq_cur; goto cmd_abort; } - mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq); + + if (reqs >= packed_nr) + mmc_blk_packed_hdr_wrq_prep(mq->mqrq_cur, + card, mq); + else + mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq); areq = &mq->mqrq_cur->mmc_active; } else areq = NULL; areq = mmc_start_req(card->host, areq, (int *) &status); - if (!areq) + if (!areq) { + if (status == MMC_BLK_NEW_REQUEST) + mq->flags |= MMC_QUEUE_NEW_REQUEST; return 0; + } mq_rq = container_of(areq, struct mmc_queue_req, mmc_active); brq = &mq_rq->brq; @@ -1301,8 +1759,15 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc) * A block was successfully transferred. */ mmc_blk_reset_success(md, type); - ret = blk_end_request(req, 0, + + if (mmc_packed_cmd(mq_rq->cmd_type)) { + ret = mmc_blk_end_packed_req(mq_rq); + break; + } else { + ret = blk_end_request(req, 0, brq->data.bytes_xfered); + } + /* * If the blk_end_request function returns non-zero even * though all data has been transferred and no errors @@ -1335,7 +1800,8 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc) err = mmc_blk_reset(md, card->host, type); if (!err) break; - if (err == -ENODEV) + if (err == -ENODEV || + mmc_packed_cmd(mq_rq->cmd_type)) goto cmd_abort; /* Fall through */ } @@ -1359,30 +1825,62 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc) break; case MMC_BLK_NOMEDIUM: goto cmd_abort; + default: + pr_err("%s: Unhandled return value (%d)", + req->rq_disk->disk_name, status); + goto cmd_abort; } if (ret) { - /* - * In case of a incomplete request - * prepare it again and resend. - */ - mmc_blk_rw_rq_prep(mq_rq, card, disable_multi, mq); - mmc_start_req(card->host, &mq_rq->mmc_active, NULL); + if (mmc_packed_cmd(mq_rq->cmd_type)) { + if (!mq_rq->packed->retries) + goto cmd_abort; + mmc_blk_packed_hdr_wrq_prep(mq_rq, card, mq); + mmc_start_req(card->host, + &mq_rq->mmc_active, NULL); + } else { + + /* + * In case of a incomplete request + * prepare it again and resend. + */ + mmc_blk_rw_rq_prep(mq_rq, card, + disable_multi, mq); + mmc_start_req(card->host, + &mq_rq->mmc_active, NULL); + } } } while (ret); return 1; cmd_abort: - if (mmc_card_removed(card)) - req->cmd_flags |= REQ_QUIET; - while (ret) - ret = blk_end_request(req, -EIO, blk_rq_cur_bytes(req)); + if (mmc_packed_cmd(mq_rq->cmd_type)) { + mmc_blk_abort_packed_req(mq_rq); + } else { + if (mmc_card_removed(card)) + req->cmd_flags |= REQ_QUIET; + while (ret) + ret = blk_end_request(req, -EIO, + blk_rq_cur_bytes(req)); + } start_new_req: if (rqc) { - mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq); - mmc_start_req(card->host, &mq->mqrq_cur->mmc_active, NULL); + if (mmc_card_removed(card)) { + rqc->cmd_flags |= REQ_QUIET; + blk_end_request_all(rqc, -EIO); + } else { + /* + * If current request is packed, it needs to put back. + */ + if (mmc_packed_cmd(mq->mqrq_cur->cmd_type)) + mmc_blk_revert_packed_req(mq, mq->mqrq_cur); + + mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq); + mmc_start_req(card->host, + &mq->mqrq_cur->mmc_active, NULL); + } } return 0; @@ -1393,6 +1891,8 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) int ret; struct mmc_blk_data *md = mq->data; struct mmc_card *card = md->queue.card; + struct mmc_host *host = card->host; + unsigned long flags; if (req && !mq->mqrq_prev->req) /* claim host only for the first request */ @@ -1407,6 +1907,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) goto out; } + mq->flags &= ~MMC_QUEUE_NEW_REQUEST; if (req && req->cmd_flags & REQ_DISCARD) { /* complete ongoing async transfer before issuing discard */ if (card->host->areq) @@ -1422,11 +1923,16 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) mmc_blk_issue_rw_rq(mq, NULL); ret = mmc_blk_issue_flush(mq, req); } else { + if (!req && host->areq) { + spin_lock_irqsave(&host->context_info.lock, flags); + host->context_info.is_waiting_last_req = true; + spin_unlock_irqrestore(&host->context_info.lock, flags); + } ret = mmc_blk_issue_rw_rq(mq, req); } out: - if (!req) + if (!req && !(mq->flags & MMC_QUEUE_NEW_REQUEST)) /* release host only when there are no more requests */ mmc_release_host(card->host); return ret; @@ -1504,6 +2010,8 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card, md->disk->queue = md->queue.queue; md->disk->driverfs_dev = parent; set_disk_ro(md->disk, md->read_only || default_ro); + if (area_type & MMC_BLK_DATA_AREA_RPMB) + md->disk->flags |= GENHD_FL_NO_PART_SCAN; /* * As discussed on lkml, GENHD_FL_REMOVABLE should: @@ -1543,6 +2051,14 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card, blk_queue_flush(md->queue.queue, REQ_FLUSH | REQ_FUA); } + if (mmc_card_mmc(card) && + (area_type == MMC_BLK_DATA_AREA_MAIN) && + (md->flags & MMC_BLK_CMD23) && + card->ext_csd.packed_event_en) { + if (!mmc_packed_init(&md->queue, card)) + md->flags |= MMC_BLK_PACKED_CMD; + } + return md; err_putdisk: @@ -1651,6 +2167,8 @@ static void mmc_blk_remove_req(struct mmc_blk_data *md) /* Then flush out any already in there */ mmc_cleanup_queue(&md->queue); + if (md->flags & MMC_BLK_PACKED_CMD) + mmc_packed_clean(&md->queue); mmc_blk_put(md); } } diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c index e360a979857d..fa4e44ee7961 100644 --- a/drivers/mmc/card/queue.c +++ b/drivers/mmc/card/queue.c @@ -22,7 +22,8 @@ #define MMC_QUEUE_BOUNCESZ 65536 -#define MMC_QUEUE_SUSPENDED (1 << 0) + +#define MMC_REQ_SPECIAL_MASK (REQ_DISCARD | REQ_FLUSH) /* * Prepare a MMC request. This just filters out odd stuff. @@ -58,6 +59,7 @@ static int mmc_queue_thread(void *d) do { struct request *req = NULL; struct mmc_queue_req *tmp; + unsigned int cmd_flags = 0; spin_lock_irq(q->queue_lock); set_current_state(TASK_INTERRUPTIBLE); @@ -67,7 +69,28 @@ static int mmc_queue_thread(void *d) if (req || mq->mqrq_prev->req) { set_current_state(TASK_RUNNING); + cmd_flags = req ? req->cmd_flags : 0; mq->issue_fn(mq, req); + if (mq->flags & MMC_QUEUE_NEW_REQUEST) { + mq->flags &= ~MMC_QUEUE_NEW_REQUEST; + continue; /* fetch again */ + } + + /* + * Current request becomes previous request + * and vice versa. + * In case of special requests, current request + * has been finished. Do not assign it to previous + * request. + */ + if (cmd_flags & MMC_REQ_SPECIAL_MASK) + mq->mqrq_cur->req = NULL; + + mq->mqrq_prev->brq.mrq.data = NULL; + mq->mqrq_prev->req = NULL; + tmp = mq->mqrq_prev; + mq->mqrq_prev = mq->mqrq_cur; + mq->mqrq_cur = tmp; } else { if (kthread_should_stop()) { set_current_state(TASK_RUNNING); @@ -77,13 +100,6 @@ static int mmc_queue_thread(void *d) schedule(); down(&mq->thread_sem); } - - /* Current request becomes previous request and vice versa. */ - mq->mqrq_prev->brq.mrq.data = NULL; - mq->mqrq_prev->req = NULL; - tmp = mq->mqrq_prev; - mq->mqrq_prev = mq->mqrq_cur; - mq->mqrq_cur = tmp; } while (1); up(&mq->thread_sem); @@ -100,6 +116,8 @@ static void mmc_request_fn(struct request_queue *q) { struct mmc_queue *mq = q->queuedata; struct request *req; + unsigned long flags; + struct mmc_context_info *cntx; if (!mq) { while ((req = blk_fetch_request(q)) != NULL) { @@ -109,7 +127,20 @@ static void mmc_request_fn(struct request_queue *q) return; } - if (!mq->mqrq_cur->req && !mq->mqrq_prev->req) + cntx = &mq->card->host->context_info; + if (!mq->mqrq_cur->req && mq->mqrq_prev->req) { + /* + * New MMC request arrived when MMC thread may be + * blocked on the previous request to be complete + * with no current request fetched + */ + spin_lock_irqsave(&cntx->lock, flags); + if (cntx->is_waiting_last_req) { + cntx->is_new_req = true; + wake_up_interruptible(&cntx->wait); + } + spin_unlock_irqrestore(&cntx->lock, flags); + } else if (!mq->mqrq_cur->req && !mq->mqrq_prev->req) wake_up_process(mq->thread); } @@ -331,6 +362,49 @@ void mmc_cleanup_queue(struct mmc_queue *mq) } EXPORT_SYMBOL(mmc_cleanup_queue); +int mmc_packed_init(struct mmc_queue *mq, struct mmc_card *card) +{ + struct mmc_queue_req *mqrq_cur = &mq->mqrq[0]; + struct mmc_queue_req *mqrq_prev = &mq->mqrq[1]; + int ret = 0; + + + mqrq_cur->packed = kzalloc(sizeof(struct mmc_packed), GFP_KERNEL); + if (!mqrq_cur->packed) { + pr_warn("%s: unable to allocate packed cmd for mqrq_cur\n", + mmc_card_name(card)); + ret = -ENOMEM; + goto out; + } + + mqrq_prev->packed = kzalloc(sizeof(struct mmc_packed), GFP_KERNEL); + if (!mqrq_prev->packed) { + pr_warn("%s: unable to allocate packed cmd for mqrq_prev\n", + mmc_card_name(card)); + kfree(mqrq_cur->packed); + mqrq_cur->packed = NULL; + ret = -ENOMEM; + goto out; + } + + INIT_LIST_HEAD(&mqrq_cur->packed->list); + INIT_LIST_HEAD(&mqrq_prev->packed->list); + +out: + return ret; +} + +void mmc_packed_clean(struct mmc_queue *mq) +{ + struct mmc_queue_req *mqrq_cur = &mq->mqrq[0]; + struct mmc_queue_req *mqrq_prev = &mq->mqrq[1]; + + kfree(mqrq_cur->packed); + mqrq_cur->packed = NULL; + kfree(mqrq_prev->packed); + mqrq_prev->packed = NULL; +} + /** * mmc_queue_suspend - suspend a MMC request queue * @mq: MMC queue to suspend @@ -375,6 +449,41 @@ void mmc_queue_resume(struct mmc_queue *mq) } } +static unsigned int mmc_queue_packed_map_sg(struct mmc_queue *mq, + struct mmc_packed *packed, + struct scatterlist *sg, + enum mmc_packed_type cmd_type) +{ + struct scatterlist *__sg = sg; + unsigned int sg_len = 0; + struct request *req; + + if (mmc_packed_wr(cmd_type)) { + unsigned int hdr_sz = mmc_large_sector(mq->card) ? 4096 : 512; + unsigned int max_seg_sz = queue_max_segment_size(mq->queue); + unsigned int len, remain, offset = 0; + u8 *buf = (u8 *)packed->cmd_hdr; + + remain = hdr_sz; + do { + len = min(remain, max_seg_sz); + sg_set_buf(__sg, buf + offset, len); + offset += len; + remain -= len; + (__sg++)->page_link &= ~0x02; + sg_len++; + } while (remain); + } + + list_for_each_entry(req, &packed->list, queuelist) { + sg_len += blk_rq_map_sg(mq->queue, req, __sg); + __sg = sg + (sg_len - 1); + (__sg++)->page_link &= ~0x02; + } + sg_mark_end(sg + (sg_len - 1)); + return sg_len; +} + /* * Prepare the sg list(s) to be handed of to the host driver */ @@ -383,14 +492,26 @@ unsigned int mmc_queue_map_sg(struct mmc_queue *mq, struct mmc_queue_req *mqrq) unsigned int sg_len; size_t buflen; struct scatterlist *sg; + enum mmc_packed_type cmd_type; int i; - if (!mqrq->bounce_buf) - return blk_rq_map_sg(mq->queue, mqrq->req, mqrq->sg); + cmd_type = mqrq->cmd_type; + + if (!mqrq->bounce_buf) { + if (mmc_packed_cmd(cmd_type)) + return mmc_queue_packed_map_sg(mq, mqrq->packed, + mqrq->sg, cmd_type); + else + return blk_rq_map_sg(mq->queue, mqrq->req, mqrq->sg); + } BUG_ON(!mqrq->bounce_sg); - sg_len = blk_rq_map_sg(mq->queue, mqrq->req, mqrq->bounce_sg); + if (mmc_packed_cmd(cmd_type)) + sg_len = mmc_queue_packed_map_sg(mq, mqrq->packed, + mqrq->bounce_sg, cmd_type); + else + sg_len = blk_rq_map_sg(mq->queue, mqrq->req, mqrq->bounce_sg); mqrq->bounce_sg_len = sg_len; diff --git a/drivers/mmc/card/queue.h b/drivers/mmc/card/queue.h index d2a1eb4b9f9f..031bf6376c99 100644 --- a/drivers/mmc/card/queue.h +++ b/drivers/mmc/card/queue.h @@ -12,6 +12,23 @@ struct mmc_blk_request { struct mmc_data data; }; +enum mmc_packed_type { + MMC_PACKED_NONE = 0, + MMC_PACKED_WRITE, +}; + +#define mmc_packed_cmd(type) ((type) != MMC_PACKED_NONE) +#define mmc_packed_wr(type) ((type) == MMC_PACKED_WRITE) + +struct mmc_packed { + struct list_head list; + u32 cmd_hdr[1024]; + unsigned int blocks; + u8 nr_entries; + u8 retries; + s16 idx_failure; +}; + struct mmc_queue_req { struct request *req; struct mmc_blk_request brq; @@ -20,6 +37,8 @@ struct mmc_queue_req { struct scatterlist *bounce_sg; unsigned int bounce_sg_len; struct mmc_async_req mmc_active; + enum mmc_packed_type cmd_type; + struct mmc_packed *packed; }; struct mmc_queue { @@ -27,6 +46,9 @@ struct mmc_queue { struct task_struct *thread; struct semaphore thread_sem; unsigned int flags; +#define MMC_QUEUE_SUSPENDED (1 << 0) +#define MMC_QUEUE_NEW_REQUEST (1 << 1) + int (*issue_fn)(struct mmc_queue *, struct request *); void *data; struct request_queue *queue; @@ -46,4 +68,7 @@ extern unsigned int mmc_queue_map_sg(struct mmc_queue *, extern void mmc_queue_bounce_pre(struct mmc_queue_req *); extern void mmc_queue_bounce_post(struct mmc_queue_req *); +extern int mmc_packed_init(struct mmc_queue *, struct mmc_card *); +extern void mmc_packed_clean(struct mmc_queue *); + #endif diff --git a/drivers/mmc/card/sdio_uart.c b/drivers/mmc/card/sdio_uart.c index d2339ea37815..c931dfe6a59c 100644 --- a/drivers/mmc/card/sdio_uart.c +++ b/drivers/mmc/card/sdio_uart.c @@ -66,8 +66,6 @@ struct uart_icount { struct sdio_uart_port { struct tty_port port; - struct kref kref; - struct tty_struct *tty; unsigned int index; struct sdio_func *func; struct mutex func_lock; @@ -93,7 +91,6 @@ static int sdio_uart_add_port(struct sdio_uart_port *port) { int index, ret = -EBUSY; - kref_init(&port->kref); mutex_init(&port->func_lock); spin_lock_init(&port->write_lock); if (kfifo_alloc(&port->xmit_fifo, FIFO_SIZE, GFP_KERNEL)) @@ -123,23 +120,15 @@ static struct sdio_uart_port *sdio_uart_port_get(unsigned index) spin_lock(&sdio_uart_table_lock); port = sdio_uart_table[index]; if (port) - kref_get(&port->kref); + tty_port_get(&port->port); spin_unlock(&sdio_uart_table_lock); return port; } -static void sdio_uart_port_destroy(struct kref *kref) -{ - struct sdio_uart_port *port = - container_of(kref, struct sdio_uart_port, kref); - kfifo_free(&port->xmit_fifo); - kfree(port); -} - static void sdio_uart_port_put(struct sdio_uart_port *port) { - kref_put(&port->kref, sdio_uart_port_destroy); + tty_port_put(&port->port); } static void sdio_uart_port_remove(struct sdio_uart_port *port) @@ -392,7 +381,6 @@ static void sdio_uart_stop_rx(struct sdio_uart_port *port) static void sdio_uart_receive_chars(struct sdio_uart_port *port, unsigned int *status) { - struct tty_struct *tty = tty_port_tty_get(&port->port); unsigned int ch, flag; int max_count = 256; @@ -429,23 +417,19 @@ static void sdio_uart_receive_chars(struct sdio_uart_port *port, } if ((*status & port->ignore_status_mask & ~UART_LSR_OE) == 0) - if (tty) - tty_insert_flip_char(tty, ch, flag); + tty_insert_flip_char(&port->port, ch, flag); /* * Overrun is special. Since it's reported immediately, * it doesn't affect the current character. */ if (*status & ~port->ignore_status_mask & UART_LSR_OE) - if (tty) - tty_insert_flip_char(tty, 0, TTY_OVERRUN); + tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); *status = sdio_in(port, UART_LSR); } while ((*status & UART_LSR_DR) && (max_count-- > 0)); - if (tty) { - tty_flip_buffer_push(tty); - tty_kref_put(tty); - } + + tty_flip_buffer_push(&port->port); } static void sdio_uart_transmit_chars(struct sdio_uart_port *port) @@ -737,6 +721,14 @@ static void sdio_uart_shutdown(struct tty_port *tport) sdio_uart_release_func(port); } +static void sdio_uart_port_destroy(struct tty_port *tport) +{ + struct sdio_uart_port *port = + container_of(tport, struct sdio_uart_port, port); + kfifo_free(&port->xmit_fifo); + kfree(port); +} + /** * sdio_uart_install - install method * @driver: the driver in use (sdio_uart in our case) @@ -1045,6 +1037,7 @@ static const struct tty_port_operations sdio_uart_port_ops = { .carrier_raised = uart_carrier_raised, .shutdown = sdio_uart_shutdown, .activate = sdio_uart_activate, + .destruct = sdio_uart_port_destroy, }; static const struct tty_operations sdio_uart_ops = { diff --git a/drivers/mmc/core/Kconfig b/drivers/mmc/core/Kconfig index ef103871517f..269d072ef55e 100644 --- a/drivers/mmc/core/Kconfig +++ b/drivers/mmc/core/Kconfig @@ -18,8 +18,7 @@ config MMC_UNSAFE_RESUME module parameter "removable=0" or "removable=1". config MMC_CLKGATE - bool "MMC host clock gating (EXPERIMENTAL)" - depends on EXPERIMENTAL + bool "MMC host clock gating" help This will attempt to aggressively gate the clock to the MMC card. This is done to save power due to gating off the logic and bus diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c index 9b68933f27e7..e219c97a02a4 100644 --- a/drivers/mmc/core/bus.c +++ b/drivers/mmc/core/bus.c @@ -225,8 +225,7 @@ static void mmc_release_card(struct device *dev) sdio_free_common_cis(card); - if (card->info) - kfree(card->info); + kfree(card->info); kfree(card); } @@ -322,6 +321,7 @@ int mmc_add_card(struct mmc_card *card) #ifdef CONFIG_DEBUG_FS mmc_add_card_debugfs(card); #endif + mmc_init_context_info(card->host); ret = device_add(&card->dev); if (ret) diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 06c42cfb7c34..08a3cf2a7610 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -42,6 +42,9 @@ #include "sd_ops.h" #include "sdio_ops.h" +/* If the device is not responding */ +#define MMC_CORE_TIMEOUT_MS (10 * 60 * 1000) /* 10 minute timeout */ + /* * Background operations can take a long time, depending on the housekeeping * operations the card has to perform. @@ -316,11 +319,45 @@ out: } EXPORT_SYMBOL(mmc_start_bkops); +/* + * mmc_wait_data_done() - done callback for data request + * @mrq: done data request + * + * Wakes up mmc context, passed as a callback to host controller driver + */ +static void mmc_wait_data_done(struct mmc_request *mrq) +{ + mrq->host->context_info.is_done_rcv = true; + wake_up_interruptible(&mrq->host->context_info.wait); +} + static void mmc_wait_done(struct mmc_request *mrq) { complete(&mrq->completion); } +/* + *__mmc_start_data_req() - starts data request + * @host: MMC host to start the request + * @mrq: data request to start + * + * Sets the done callback to be called when request is completed by the card. + * Starts data mmc request execution + */ +static int __mmc_start_data_req(struct mmc_host *host, struct mmc_request *mrq) +{ + mrq->done = mmc_wait_data_done; + mrq->host = host; + if (mmc_card_removed(host->card)) { + mrq->cmd->error = -ENOMEDIUM; + mmc_wait_data_done(mrq); + return -ENOMEDIUM; + } + mmc_start_request(host, mrq); + + return 0; +} + static int __mmc_start_req(struct mmc_host *host, struct mmc_request *mrq) { init_completion(&mrq->completion); @@ -334,6 +371,62 @@ static int __mmc_start_req(struct mmc_host *host, struct mmc_request *mrq) return 0; } +/* + * mmc_wait_for_data_req_done() - wait for request completed + * @host: MMC host to prepare the command. + * @mrq: MMC request to wait for + * + * Blocks MMC context till host controller will ack end of data request + * execution or new request notification arrives from the block layer. + * Handles command retries. + * + * Returns enum mmc_blk_status after checking errors. + */ +static int mmc_wait_for_data_req_done(struct mmc_host *host, + struct mmc_request *mrq, + struct mmc_async_req *next_req) +{ + struct mmc_command *cmd; + struct mmc_context_info *context_info = &host->context_info; + int err; + unsigned long flags; + + while (1) { + wait_event_interruptible(context_info->wait, + (context_info->is_done_rcv || + context_info->is_new_req)); + spin_lock_irqsave(&context_info->lock, flags); + context_info->is_waiting_last_req = false; + spin_unlock_irqrestore(&context_info->lock, flags); + if (context_info->is_done_rcv) { + context_info->is_done_rcv = false; + context_info->is_new_req = false; + cmd = mrq->cmd; + if (!cmd->error || !cmd->retries || + mmc_card_removed(host->card)) { + err = host->areq->err_check(host->card, + host->areq); + break; /* return err */ + } else { + pr_info("%s: req failed (CMD%u): %d, retrying...\n", + mmc_hostname(host), + cmd->opcode, cmd->error); + cmd->retries--; + cmd->error = 0; + host->ops->request(host, mrq); + continue; /* wait for done/new event again */ + } + } else if (context_info->is_new_req) { + context_info->is_new_req = false; + if (!next_req) { + err = MMC_BLK_NEW_REQUEST; + break; /* return err */ + } + } + } + return err; +} + static void mmc_wait_for_req_done(struct mmc_host *host, struct mmc_request *mrq) { @@ -423,8 +516,16 @@ struct mmc_async_req *mmc_start_req(struct mmc_host *host, mmc_pre_req(host, areq->mrq, !host->areq); if (host->areq) { - mmc_wait_for_req_done(host, host->areq->mrq); - err = host->areq->err_check(host->card, host->areq); + err = mmc_wait_for_data_req_done(host, host->areq->mrq, areq); + if (err == MMC_BLK_NEW_REQUEST) { + if (error) + *error = err; + /* + * The previous request was not completed, + * nothing to return + */ + return NULL; + } /* * Check BKOPS urgency for each R1 response */ @@ -436,14 +537,14 @@ struct mmc_async_req *mmc_start_req(struct mmc_host *host, } if (!err && areq) - start_err = __mmc_start_req(host, areq->mrq); + start_err = __mmc_start_data_req(host, areq->mrq); if (host->areq) mmc_post_req(host, host->areq->mrq, 0); /* Cancel a prepared request if it was not started. */ if ((err || start_err) && areq) - mmc_post_req(host, areq->mrq, -EINVAL); + mmc_post_req(host, areq->mrq, -EINVAL); if (err) host->areq = NULL; @@ -1134,7 +1235,7 @@ int mmc_regulator_set_ocr(struct mmc_host *mmc, */ voltage = regulator_get_voltage(supply); - if (regulator_count_voltages(supply) == 1) + if (!regulator_can_change_voltage(supply)) min_uV = max_uV = voltage; if (voltage < 0) @@ -1216,10 +1317,30 @@ u32 mmc_select_voltage(struct mmc_host *host, u32 ocr) return ocr; } -int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage, bool cmd11) +int __mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage) +{ + int err = 0; + int old_signal_voltage = host->ios.signal_voltage; + + host->ios.signal_voltage = signal_voltage; + if (host->ops->start_signal_voltage_switch) { + mmc_host_clk_hold(host); + err = host->ops->start_signal_voltage_switch(host, &host->ios); + mmc_host_clk_release(host); + } + + if (err) + host->ios.signal_voltage = old_signal_voltage; + + return err; + +} + +int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage) { struct mmc_command cmd = {0}; int err = 0; + u32 clock; BUG_ON(!host); @@ -1227,27 +1348,81 @@ int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage, bool cmd11 * Send CMD11 only if the request is to switch the card to * 1.8V signalling. */ - if ((signal_voltage != MMC_SIGNAL_VOLTAGE_330) && cmd11) { - cmd.opcode = SD_SWITCH_VOLTAGE; - cmd.arg = 0; - cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; + if (signal_voltage == MMC_SIGNAL_VOLTAGE_330) + return __mmc_set_signal_voltage(host, signal_voltage); - err = mmc_wait_for_cmd(host, &cmd, 0); - if (err) - return err; + /* + * If we cannot switch voltages, return failure so the caller + * can continue without UHS mode + */ + if (!host->ops->start_signal_voltage_switch) + return -EPERM; + if (!host->ops->card_busy) + pr_warning("%s: cannot verify signal voltage switch\n", + mmc_hostname(host)); - if (!mmc_host_is_spi(host) && (cmd.resp[0] & R1_ERROR)) - return -EIO; + cmd.opcode = SD_SWITCH_VOLTAGE; + cmd.arg = 0; + cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; + + err = mmc_wait_for_cmd(host, &cmd, 0); + if (err) + return err; + + if (!mmc_host_is_spi(host) && (cmd.resp[0] & R1_ERROR)) + return -EIO; + + mmc_host_clk_hold(host); + /* + * The card should drive cmd and dat[0:3] low immediately + * after the response of cmd11, but wait 1 ms to be sure + */ + mmc_delay(1); + if (host->ops->card_busy && !host->ops->card_busy(host)) { + err = -EAGAIN; + goto power_cycle; } + /* + * During a signal voltage level switch, the clock must be gated + * for 5 ms according to the SD spec + */ + clock = host->ios.clock; + host->ios.clock = 0; + mmc_set_ios(host); - host->ios.signal_voltage = signal_voltage; + if (__mmc_set_signal_voltage(host, signal_voltage)) { + /* + * Voltages may not have been switched, but we've already + * sent CMD11, so a power cycle is required anyway + */ + err = -EAGAIN; + goto power_cycle; + } - if (host->ops->start_signal_voltage_switch) { - mmc_host_clk_hold(host); - err = host->ops->start_signal_voltage_switch(host, &host->ios); - mmc_host_clk_release(host); + /* Keep clock gated for at least 5 ms */ + mmc_delay(5); + host->ios.clock = clock; + mmc_set_ios(host); + + /* Wait for at least 1 ms according to spec */ + mmc_delay(1); + + /* + * Failure to switch is indicated by the card holding + * dat[0:3] low + */ + if (host->ops->card_busy && host->ops->card_busy(host)) + err = -EAGAIN; + +power_cycle: + if (err) { + pr_debug("%s: Signal voltage switch failed, " + "power cycling card\n", mmc_hostname(host)); + mmc_power_cycle(host); } + mmc_host_clk_release(host); + return err; } @@ -1311,7 +1486,7 @@ static void mmc_power_up(struct mmc_host *host) mmc_set_ios(host); /* Set signal voltage to 3.3V */ - mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, false); + __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); /* * This delay should be sufficient to allow the power supply @@ -1369,6 +1544,14 @@ void mmc_power_off(struct mmc_host *host) mmc_host_clk_release(host); } +void mmc_power_cycle(struct mmc_host *host) +{ + mmc_power_off(host); + /* Wait at least 1 ms according to SD spec */ + mmc_delay(1); + mmc_power_up(host); +} + /* * Cleanup when the last reference to the bus operator is dropped. */ @@ -1631,6 +1814,7 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from, { struct mmc_command cmd = {0}; unsigned int qty = 0; + unsigned long timeout; int err; /* @@ -1708,6 +1892,7 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from, if (mmc_host_is_spi(card->host)) goto out; + timeout = jiffies + msecs_to_jiffies(MMC_CORE_TIMEOUT_MS); do { memset(&cmd, 0, sizeof(struct mmc_command)); cmd.opcode = MMC_SEND_STATUS; @@ -1721,8 +1906,19 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from, err = -EIO; goto out; } + + /* Timeout if the device never becomes ready for data and + * never leaves the program state. + */ + if (time_after(jiffies, timeout)) { + pr_err("%s: Card stuck in programming state! %s\n", + mmc_hostname(card->host), __func__); + err = -EIO; + goto out; + } + } while (!(cmd.resp[0] & R1_READY_FOR_DATA) || - R1_CURRENT_STATE(cmd.resp[0]) == R1_STATE_PRG); + (R1_CURRENT_STATE(cmd.resp[0]) == R1_STATE_PRG)); out: return err; } @@ -1942,6 +2138,20 @@ int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen) } EXPORT_SYMBOL(mmc_set_blocklen); +int mmc_set_blockcount(struct mmc_card *card, unsigned int blockcount, + bool is_rel_write) +{ + struct mmc_command cmd = {0}; + + cmd.opcode = MMC_SET_BLOCK_COUNT; + cmd.arg = blockcount & 0x0000FFFF; + if (is_rel_write) + cmd.arg |= 1 << 31; + cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC; + return mmc_wait_for_cmd(card->host, &cmd, 5); +} +EXPORT_SYMBOL(mmc_set_blockcount); + static void mmc_hw_reset_for_init(struct mmc_host *host) { if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset) @@ -2358,6 +2568,7 @@ EXPORT_SYMBOL(mmc_flush_cache); * Turn the cache ON/OFF. * Turning the cache OFF shall trigger flushing of the data * to the non-volatile storage. + * This function should be called with host claimed */ int mmc_cache_ctrl(struct mmc_host *host, u8 enable) { @@ -2369,7 +2580,6 @@ int mmc_cache_ctrl(struct mmc_host *host, u8 enable) mmc_card_is_removable(host)) return err; - mmc_claim_host(host); if (card && mmc_card_mmc(card) && (card->ext_csd.cache_size > 0)) { enable = !!enable; @@ -2387,7 +2597,6 @@ int mmc_cache_ctrl(struct mmc_host *host, u8 enable) card->ext_csd.cache_ctrl = enable; } } - mmc_release_host(host); return err; } @@ -2406,10 +2615,6 @@ int mmc_suspend_host(struct mmc_host *host) cancel_delayed_work(&host->detect); mmc_flush_scheduled_work(); - err = mmc_cache_ctrl(host, 0); - if (err) - goto out; - mmc_bus_get(host); if (host->bus_ops && !host->bus_dead) { if (host->bus_ops->suspend) { @@ -2551,6 +2756,23 @@ int mmc_pm_notify(struct notifier_block *notify_block, } #endif +/** + * mmc_init_context_info() - init synchronization context + * @host: mmc host + * + * Init struct context_info needed to implement asynchronous + * request mechanism, used by mmc core, host driver and mmc requests + * supplier. + */ +void mmc_init_context_info(struct mmc_host *host) +{ + spin_lock_init(&host->context_info.lock); + host->context_info.is_new_req = false; + host->context_info.is_done_rcv = false; + host->context_info.is_waiting_last_req = false; + init_waitqueue_head(&host->context_info.wait); +} + static int __init mmc_init(void) { int ret; diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h index 3bdafbca354f..b9f18a2a8874 100644 --- a/drivers/mmc/core/core.h +++ b/drivers/mmc/core/core.h @@ -40,11 +40,12 @@ void mmc_set_ungated(struct mmc_host *host); void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode); void mmc_set_bus_width(struct mmc_host *host, unsigned int width); u32 mmc_select_voltage(struct mmc_host *host, u32 ocr); -int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage, - bool cmd11); +int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage); +int __mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage); void mmc_set_timing(struct mmc_host *host, unsigned int timing); void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type); void mmc_power_off(struct mmc_host *host); +void mmc_power_cycle(struct mmc_host *host); static inline void mmc_delay(unsigned int ms) { @@ -76,5 +77,6 @@ void mmc_remove_host_debugfs(struct mmc_host *host); void mmc_add_card_debugfs(struct mmc_card *card); void mmc_remove_card_debugfs(struct mmc_card *card); +void mmc_init_context_info(struct mmc_host *host); #endif diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c index d96c643dde1c..35c2f85b1956 100644 --- a/drivers/mmc/core/debugfs.c +++ b/drivers/mmc/core/debugfs.c @@ -144,6 +144,22 @@ static int mmc_ios_show(struct seq_file *s, void *data) } seq_printf(s, "timing spec:\t%u (%s)\n", ios->timing, str); + switch (ios->signal_voltage) { + case MMC_SIGNAL_VOLTAGE_330: + str = "3.30 V"; + break; + case MMC_SIGNAL_VOLTAGE_180: + str = "1.80 V"; + break; + case MMC_SIGNAL_VOLTAGE_120: + str = "1.20 V"; + break; + default: + str = "invalid"; + break; + } + seq_printf(s, "signal voltage:\t%u (%s)\n", ios->chip_select, str); + return 0; } diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index ee2e16b17017..2a3593d9f87d 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -15,6 +15,8 @@ #include <linux/device.h> #include <linux/err.h> #include <linux/idr.h> +#include <linux/of.h> +#include <linux/of_gpio.h> #include <linux/pagemap.h> #include <linux/export.h> #include <linux/leds.h> @@ -23,6 +25,7 @@ #include <linux/mmc/host.h> #include <linux/mmc/card.h> +#include <linux/mmc/slot-gpio.h> #include "core.h" #include "host.h" @@ -295,6 +298,126 @@ static inline void mmc_host_clk_sysfs_init(struct mmc_host *host) #endif /** + * mmc_of_parse() - parse host's device-tree node + * @host: host whose node should be parsed. + * + * To keep the rest of the MMC subsystem unaware of whether DT has been + * used to to instantiate and configure this host instance or not, we + * parse the properties and set respective generic mmc-host flags and + * parameters. + */ +void mmc_of_parse(struct mmc_host *host) +{ + struct device_node *np; + u32 bus_width; + bool explicit_inv_wp, gpio_inv_wp = false; + enum of_gpio_flags flags; + int len, ret, gpio; + + if (!host->parent || !host->parent->of_node) + return; + + np = host->parent->of_node; + + /* "bus-width" is translated to MMC_CAP_*_BIT_DATA flags */ + if (of_property_read_u32(np, "bus-width", &bus_width) < 0) { + dev_dbg(host->parent, + "\"bus-width\" property is missing, assuming 1 bit.\n"); + bus_width = 1; + } + + switch (bus_width) { + case 8: + host->caps |= MMC_CAP_8_BIT_DATA; + /* Hosts capable of 8-bit transfers can also do 4 bits */ + case 4: + host->caps |= MMC_CAP_4_BIT_DATA; + break; + case 1: + break; + default: + dev_err(host->parent, + "Invalid \"bus-width\" value %ud!\n", bus_width); + } + + /* f_max is obtained from the optional "max-frequency" property */ + of_property_read_u32(np, "max-frequency", &host->f_max); + + /* + * Configure CD and WP pins. They are both by default active low to + * match the SDHCI spec. If GPIOs are provided for CD and / or WP, the + * mmc-gpio helpers are used to attach, configure and use them. If + * polarity inversion is specified in DT, one of MMC_CAP2_CD_ACTIVE_HIGH + * and MMC_CAP2_RO_ACTIVE_HIGH capability-2 flags is set. If the + * "broken-cd" property is provided, the MMC_CAP_NEEDS_POLL capability + * is set. If the "non-removable" property is found, the + * MMC_CAP_NONREMOVABLE capability is set and no card-detection + * configuration is performed. + */ + + /* Parse Card Detection */ + if (of_find_property(np, "non-removable", &len)) { + host->caps |= MMC_CAP_NONREMOVABLE; + } else { + bool explicit_inv_cd, gpio_inv_cd = false; + + explicit_inv_cd = of_property_read_bool(np, "cd-inverted"); + + if (of_find_property(np, "broken-cd", &len)) + host->caps |= MMC_CAP_NEEDS_POLL; + + gpio = of_get_named_gpio_flags(np, "cd-gpios", 0, &flags); + if (gpio_is_valid(gpio)) { + if (!(flags & OF_GPIO_ACTIVE_LOW)) + gpio_inv_cd = true; + + ret = mmc_gpio_request_cd(host, gpio); + if (ret < 0) + dev_err(host->parent, + "Failed to request CD GPIO #%d: %d!\n", + gpio, ret); + else + dev_info(host->parent, "Got CD GPIO #%d.\n", + gpio); + } + + if (explicit_inv_cd ^ gpio_inv_cd) + host->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH; + } + + /* Parse Write Protection */ + explicit_inv_wp = of_property_read_bool(np, "wp-inverted"); + + gpio = of_get_named_gpio_flags(np, "wp-gpios", 0, &flags); + if (gpio_is_valid(gpio)) { + if (!(flags & OF_GPIO_ACTIVE_LOW)) + gpio_inv_wp = true; + + ret = mmc_gpio_request_ro(host, gpio); + if (ret < 0) + dev_err(host->parent, + "Failed to request WP GPIO: %d!\n", ret); + } + if (explicit_inv_wp ^ gpio_inv_wp) + host->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH; + + if (of_find_property(np, "cap-sd-highspeed", &len)) + host->caps |= MMC_CAP_SD_HIGHSPEED; + if (of_find_property(np, "cap-mmc-highspeed", &len)) + host->caps |= MMC_CAP_MMC_HIGHSPEED; + if (of_find_property(np, "cap-power-off-card", &len)) + host->caps |= MMC_CAP_POWER_OFF_CARD; + if (of_find_property(np, "cap-sdio-irq", &len)) + host->caps |= MMC_CAP_SDIO_IRQ; + if (of_find_property(np, "keep-power-in-suspend", &len)) + host->pm_caps |= MMC_PM_KEEP_POWER; + if (of_find_property(np, "enable-sdio-wakeup", &len)) + host->pm_caps |= MMC_PM_WAKE_SDIO_IRQ; +} + +EXPORT_SYMBOL(mmc_of_parse); + +/** * mmc_alloc_host - initialise the per-host structure. * @extra: sizeof private data structure * @dev: pointer to host device model structure @@ -306,19 +429,20 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev) int err; struct mmc_host *host; - if (!idr_pre_get(&mmc_host_idr, GFP_KERNEL)) - return NULL; - host = kzalloc(sizeof(struct mmc_host) + extra, GFP_KERNEL); if (!host) return NULL; /* scanning will be enabled when we're ready */ host->rescan_disable = 1; + idr_preload(GFP_KERNEL); spin_lock(&mmc_host_lock); - err = idr_get_new(&mmc_host_idr, host, &host->index); + err = idr_alloc(&mmc_host_idr, host, 0, 0, GFP_NOWAIT); + if (err >= 0) + host->index = err; spin_unlock(&mmc_host_lock); - if (err) + idr_preload_end(); + if (err < 0) goto free; dev_set_name(&host->class_dev, "mmc%d", host->index); diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 7cc46382fd64..c8f3d6e0684e 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -239,7 +239,7 @@ static void mmc_select_card_type(struct mmc_card *card) { struct mmc_host *host = card->host; u8 card_type = card->ext_csd.raw_card_type & EXT_CSD_CARD_TYPE_MASK; - unsigned int caps = host->caps, caps2 = host->caps2; + u32 caps = host->caps, caps2 = host->caps2; unsigned int hs_max_dtr = 0; if (card_type & EXT_CSD_CARD_TYPE_26) @@ -491,6 +491,17 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; + + /* + * RPMB regions are defined in multiples of 128K. + */ + card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; + if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { + mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, + EXT_CSD_PART_CONFIG_ACC_RPMB, + "rpmb", 0, false, + MMC_BLK_DATA_AREA_RPMB); + } } card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; @@ -527,6 +538,11 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) } else { card->ext_csd.data_tag_unit_size = 0; } + + card->ext_csd.max_packed_writes = + ext_csd[EXT_CSD_MAX_PACKED_WRITES]; + card->ext_csd.max_packed_reads = + ext_csd[EXT_CSD_MAX_PACKED_READS]; } else { card->ext_csd.data_sector_size = 512; } @@ -615,6 +631,8 @@ MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", card->ext_csd.enhanced_area_offset); MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); +MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); +MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); static struct attribute *mmc_std_attrs[] = { &dev_attr_cid.attr, @@ -630,6 +648,8 @@ static struct attribute *mmc_std_attrs[] = { &dev_attr_serial.attr, &dev_attr_enhanced_area_offset.attr, &dev_attr_enhanced_area_size.attr, + &dev_attr_raw_rpmb_size_mult.attr, + &dev_attr_rel_sectors.attr, NULL, }; @@ -754,11 +774,11 @@ static int mmc_select_hs200(struct mmc_card *card) if (card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_2V && host->caps2 & MMC_CAP2_HS200_1_2V_SDR) - err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120, 0); + err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); if (err && card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_8V && host->caps2 & MMC_CAP2_HS200_1_8V_SDR) - err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, 0); + err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); /* If fails try again during next card power cycle */ if (err) @@ -1051,6 +1071,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, if (mmc_card_highspeed(card) || mmc_card_hs200(card)) { if (max_dtr > card->ext_csd.hs_max_dtr) max_dtr = card->ext_csd.hs_max_dtr; + if (mmc_card_highspeed(card) && (max_dtr > 52000000)) + max_dtr = 52000000; } else if (max_dtr > card->csd.max_dtr) { max_dtr = card->csd.max_dtr; } @@ -1204,8 +1226,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, * WARNING: eMMC rules are NOT the same as SD DDR */ if (ddr == MMC_1_2V_DDR_MODE) { - err = mmc_set_signal_voltage(host, - MMC_SIGNAL_VOLTAGE_120, 0); + err = __mmc_set_signal_voltage(host, + MMC_SIGNAL_VOLTAGE_120); if (err) goto err; } @@ -1258,6 +1280,29 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, } } + /* + * The mandatory minimum values are defined for packed command. + * read: 5, write: 3 + */ + if (card->ext_csd.max_packed_writes >= 3 && + card->ext_csd.max_packed_reads >= 5 && + host->caps2 & MMC_CAP2_PACKED_CMD) { + err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, + EXT_CSD_EXP_EVENTS_CTRL, + EXT_CSD_PACKED_EVENT_EN, + card->ext_csd.generic_cmd6_time); + if (err && err != -EBADMSG) + goto free_card; + if (err) { + pr_warn("%s: Enabling packed event failed\n", + mmc_hostname(card->host)); + card->ext_csd.packed_event_en = 0; + err = 0; + } else { + card->ext_csd.packed_event_en = 1; + } + } + if (!oldcard) host->card = card; @@ -1362,6 +1407,11 @@ static int mmc_suspend(struct mmc_host *host) BUG_ON(!host->card); mmc_claim_host(host); + + err = mmc_cache_ctrl(host, 0); + if (err) + goto out; + if (mmc_can_poweroff_notify(host->card)) err = mmc_poweroff_notify(host->card, EXT_CSD_POWER_OFF_SHORT); else if (mmc_card_can_sleep(host)) @@ -1369,8 +1419,9 @@ static int mmc_suspend(struct mmc_host *host) else if (!mmc_host_is_spi(host)) err = mmc_deselect_cards(host); host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); - mmc_release_host(host); +out: + mmc_release_host(host); return err; } diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index a0e172042e65..49f04bc9d0eb 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -21,6 +21,8 @@ #include "core.h" #include "mmc_ops.h" +#define MMC_OPS_TIMEOUT_MS (10 * 60 * 1000) /* 10 minute timeout */ + static int _mmc_select_card(struct mmc_host *host, struct mmc_card *card) { int err; @@ -361,6 +363,7 @@ int mmc_send_ext_csd(struct mmc_card *card, u8 *ext_csd) return mmc_send_cxd_data(card, card->host, MMC_SEND_EXT_CSD, ext_csd, 512); } +EXPORT_SYMBOL_GPL(mmc_send_ext_csd); int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp) { @@ -409,6 +412,7 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, { int err; struct mmc_command cmd = {0}; + unsigned long timeout; u32 status; BUG_ON(!card); @@ -437,6 +441,7 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, return 0; /* Must check status to be sure of no errors */ + timeout = jiffies + msecs_to_jiffies(MMC_OPS_TIMEOUT_MS); do { err = mmc_send_status(card, &status); if (err) @@ -445,6 +450,13 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, break; if (mmc_host_is_spi(card->host)) break; + + /* Timeout if the device never leaves the program state. */ + if (time_after(jiffies, timeout)) { + pr_err("%s: Card stuck in programming state! %s\n", + mmc_hostname(card->host), __func__); + return -ETIMEDOUT; + } } while (R1_CURRENT_STATE(status) == R1_STATE_PRG); if (mmc_host_is_spi(card->host)) { diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 74972c241dff..9e645e19cec6 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -444,8 +444,7 @@ static void sd_update_bus_speed_mode(struct mmc_card *card) * If the host doesn't support any of the UHS-I modes, fallback on * default speed. */ - if (!(card->host->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | - MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50))) { + if (!mmc_host_uhs(card->host)) { card->sd_bus_speed = 0; return; } @@ -713,6 +712,14 @@ int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr) { int err; u32 max_current; + int retries = 10; + +try_again: + if (!retries) { + ocr &= ~SD_OCR_S18R; + pr_warning("%s: Skipping voltage switch\n", + mmc_hostname(host)); + } /* * Since we're changing the OCR value, we seem to @@ -734,10 +741,10 @@ int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr) /* * If the host supports one of UHS-I modes, request the card - * to switch to 1.8V signaling level. + * to switch to 1.8V signaling level. If the card has failed + * repeatedly to switch however, skip this. */ - if (host->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | - MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50)) + if (retries && mmc_host_uhs(host)) ocr |= SD_OCR_S18R; /* @@ -748,7 +755,6 @@ int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr) if (max_current > 150) ocr |= SD_OCR_XPC; -try_again: err = mmc_send_app_op_cond(host, ocr, rocr); if (err) return err; @@ -759,9 +765,12 @@ try_again: */ if (!mmc_host_is_spi(host) && rocr && ((*rocr & 0x41000000) == 0x41000000)) { - err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, true); - if (err) { - ocr &= ~SD_OCR_S18R; + err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); + if (err == -EAGAIN) { + retries--; + goto try_again; + } else if (err) { + retries = 0; goto try_again; } } @@ -960,16 +969,6 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, /* Card is an ultra-high-speed card */ mmc_card_set_uhs(card); - - /* - * Since initialization is now complete, enable preset - * value registers for UHS-I cards. - */ - if (host->ops->enable_preset_value) { - mmc_host_clk_hold(card->host); - host->ops->enable_preset_value(host, true); - mmc_host_clk_release(card->host); - } } else { /* * Attempt to change to high-speed (if supported) @@ -1148,13 +1147,6 @@ int mmc_attach_sd(struct mmc_host *host) BUG_ON(!host); WARN_ON(!host->claimed); - /* Disable preset value enable if already set since last time */ - if (host->ops->enable_preset_value) { - mmc_host_clk_hold(host); - host->ops->enable_preset_value(host, false); - mmc_host_clk_release(host); - } - err = mmc_send_app_op_cond(host, 0, &ocr); if (err) return err; diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index 2273ce6b6c1a..aa0719a4dfd1 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -157,10 +157,7 @@ static int sdio_read_cccr(struct mmc_card *card, u32 ocr) if (ret) goto out; - if (card->host->caps & - (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | - MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | - MMC_CAP_UHS_DDR50)) { + if (mmc_host_uhs(card->host)) { if (data & SDIO_UHS_DDR50) card->sw_caps.sd3_bus_mode |= SD_MODE_UHS_DDR50; @@ -478,8 +475,7 @@ static int sdio_set_bus_speed_mode(struct mmc_card *card) * If the host doesn't support any of the UHS-I modes, fallback on * default speed. */ - if (!(card->host->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | - MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50))) + if (!mmc_host_uhs(card->host)) return 0; bus_speed = SDIO_SPEED_SDR12; @@ -489,23 +485,27 @@ static int sdio_set_bus_speed_mode(struct mmc_card *card) bus_speed = SDIO_SPEED_SDR104; timing = MMC_TIMING_UHS_SDR104; card->sw_caps.uhs_max_dtr = UHS_SDR104_MAX_DTR; + card->sd_bus_speed = UHS_SDR104_BUS_SPEED; } else if ((card->host->caps & MMC_CAP_UHS_DDR50) && (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) { bus_speed = SDIO_SPEED_DDR50; timing = MMC_TIMING_UHS_DDR50; card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR; + card->sd_bus_speed = UHS_DDR50_BUS_SPEED; } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR50)) { bus_speed = SDIO_SPEED_SDR50; timing = MMC_TIMING_UHS_SDR50; card->sw_caps.uhs_max_dtr = UHS_SDR50_MAX_DTR; + card->sd_bus_speed = UHS_SDR50_BUS_SPEED; } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25)) && (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25)) { bus_speed = SDIO_SPEED_SDR25; timing = MMC_TIMING_UHS_SDR25; card->sw_caps.uhs_max_dtr = UHS_SDR25_MAX_DTR; + card->sd_bus_speed = UHS_SDR25_BUS_SPEED; } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25 | MMC_CAP_UHS_SDR12)) && (card->sw_caps.sd3_bus_mode & @@ -513,6 +513,7 @@ static int sdio_set_bus_speed_mode(struct mmc_card *card) bus_speed = SDIO_SPEED_SDR12; timing = MMC_TIMING_UHS_SDR12; card->sw_caps.uhs_max_dtr = UHS_SDR12_MAX_DTR; + card->sd_bus_speed = UHS_SDR12_BUS_SPEED; } err = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &speed); @@ -583,10 +584,19 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, { struct mmc_card *card; int err; + int retries = 10; BUG_ON(!host); WARN_ON(!host->claimed); +try_again: + if (!retries) { + pr_warning("%s: Skipping voltage switch\n", + mmc_hostname(host)); + ocr &= ~R4_18V_PRESENT; + host->ocr &= ~R4_18V_PRESENT; + } + /* * Inform the card of the voltage */ @@ -645,14 +655,16 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, * systems that claim 1.8v signalling in fact do not support * it. */ - if ((ocr & R4_18V_PRESENT) && - (host->caps & - (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | - MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | - MMC_CAP_UHS_DDR50))) { - err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, - true); - if (err) { + if (!powered_resume && (ocr & R4_18V_PRESENT) && mmc_host_uhs(host)) { + err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); + if (err == -EAGAIN) { + sdio_reset(host); + mmc_go_idle(host); + mmc_send_if_cond(host, host->ocr_avail); + mmc_remove_card(card); + retries--; + goto try_again; + } else if (err) { ocr &= ~R4_18V_PRESENT; host->ocr &= ~R4_18V_PRESENT; } @@ -937,10 +949,12 @@ static int mmc_sdio_resume(struct mmc_host *host) mmc_claim_host(host); /* No need to reinitialize powered-resumed nonremovable cards */ - if (mmc_card_is_removable(host) || !mmc_card_keep_power(host)) + if (mmc_card_is_removable(host) || !mmc_card_keep_power(host)) { + sdio_reset(host); + mmc_go_idle(host); err = mmc_sdio_init_card(host, host->ocr, host->card, mmc_card_keep_power(host)); - else if (mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host)) { + } else if (mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host)) { /* We may have switched to 1-bit mode during suspend */ err = sdio_enable_4bit_bus(host->card); if (err > 0) { @@ -1020,6 +1034,10 @@ static int mmc_sdio_power_restore(struct mmc_host *host) goto out; } + if (mmc_host_uhs(host)) + /* to query card if 1.8V signalling is supported */ + host->ocr |= R4_18V_PRESENT; + ret = mmc_sdio_init_card(host, host->ocr, host->card, mmc_card_keep_power(host)); if (!ret && host->sdio_irqs) @@ -1085,6 +1103,10 @@ int mmc_attach_sdio(struct mmc_host *host) /* * Detect and init the card. */ + if (mmc_host_uhs(host)) + /* to query card if 1.8V signalling is supported */ + host->ocr |= R4_18V_PRESENT; + err = mmc_sdio_init_card(host, host->ocr, NULL, 0); if (err) { if (err == -EAGAIN) { diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c index 6bf68799fe97..5e57048e2c1d 100644 --- a/drivers/mmc/core/sdio_bus.c +++ b/drivers/mmc/core/sdio_bus.c @@ -193,7 +193,21 @@ static int sdio_bus_remove(struct device *dev) } #ifdef CONFIG_PM + +#ifdef CONFIG_PM_SLEEP +static int pm_no_operation(struct device *dev) +{ + /* + * Prevent the PM core from calling SDIO device drivers' suspend + * callback routines, which it is not supposed to do, by using this + * empty function as the bus type suspend callaback for SDIO. + */ + return 0; +} +#endif + static const struct dev_pm_ops sdio_bus_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(pm_no_operation, pm_no_operation) SET_RUNTIME_PM_OPS( pm_generic_runtime_suspend, pm_generic_runtime_resume, @@ -258,8 +272,7 @@ static void sdio_release_func(struct device *dev) sdio_free_func_cis(func); - if (func->info) - kfree(func->info); + kfree(func->info); kfree(func); } diff --git a/drivers/mmc/core/sdio_io.c b/drivers/mmc/core/sdio_io.c index 8f6f5ac131fc..78cb4d5d9d58 100644 --- a/drivers/mmc/core/sdio_io.c +++ b/drivers/mmc/core/sdio_io.c @@ -188,8 +188,7 @@ EXPORT_SYMBOL_GPL(sdio_set_block_size); */ static inline unsigned int sdio_max_byte_size(struct sdio_func *func) { - unsigned mval = min(func->card->host->max_seg_size, - func->card->host->max_blk_size); + unsigned mval = func->card->host->max_blk_size; if (mmc_blksz_for_byte_mode(func->card)) mval = min(mval, func->cur_blksize); @@ -311,11 +310,8 @@ static int sdio_io_rw_ext_helper(struct sdio_func *func, int write, /* Do the bulk of the transfer using block mode (if supported). */ if (func->card->cccr.multi_block && (size > sdio_max_byte_size(func))) { /* Blocks per command is limited by host count, host transfer - * size (we only use a single sg entry) and the maximum for - * IO_RW_EXTENDED of 511 blocks. */ - max_blocks = min(func->card->host->max_blk_count, - func->card->host->max_seg_size / func->cur_blksize); - max_blocks = min(max_blocks, 511u); + * size and the maximum for IO_RW_EXTENDED of 511 blocks. */ + max_blocks = min(func->card->host->max_blk_count, 511u); while (remainder >= func->cur_blksize) { unsigned blocks; diff --git a/drivers/mmc/core/sdio_ops.c b/drivers/mmc/core/sdio_ops.c index d29e20630eed..62508b457c4f 100644 --- a/drivers/mmc/core/sdio_ops.c +++ b/drivers/mmc/core/sdio_ops.c @@ -124,7 +124,10 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn, struct mmc_request mrq = {NULL}; struct mmc_command cmd = {0}; struct mmc_data data = {0}; - struct scatterlist sg; + struct scatterlist sg, *sg_ptr; + struct sg_table sgtable; + unsigned int nents, left_size, i; + unsigned int seg_size = card->host->max_seg_size; BUG_ON(!card); BUG_ON(fn > 7); @@ -152,15 +155,36 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn, /* Code in host drivers/fwk assumes that "blocks" always is >=1 */ data.blocks = blocks ? blocks : 1; data.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ; - data.sg = &sg; - data.sg_len = 1; - sg_init_one(&sg, buf, data.blksz * data.blocks); + left_size = data.blksz * data.blocks; + nents = (left_size - 1) / seg_size + 1; + if (nents > 1) { + if (sg_alloc_table(&sgtable, nents, GFP_KERNEL)) + return -ENOMEM; + + data.sg = sgtable.sgl; + data.sg_len = nents; + + for_each_sg(data.sg, sg_ptr, data.sg_len, i) { + sg_set_page(sg_ptr, virt_to_page(buf + (i * seg_size)), + min(seg_size, left_size), + offset_in_page(buf + (i * seg_size))); + left_size = left_size - seg_size; + } + } else { + data.sg = &sg; + data.sg_len = 1; + + sg_init_one(&sg, buf, left_size); + } mmc_set_data_timeout(&data, card); mmc_wait_for_req(card->host, &mrq); + if (nents > 1) + sg_free_table(&sgtable); + if (cmd.error) return cmd.error; if (data.error) diff --git a/drivers/mmc/core/slot-gpio.c b/drivers/mmc/core/slot-gpio.c index 08c6b3dfe080..324235105519 100644 --- a/drivers/mmc/core/slot-gpio.c +++ b/drivers/mmc/core/slot-gpio.c @@ -27,7 +27,13 @@ struct mmc_gpio { static irqreturn_t mmc_gpio_cd_irqt(int irq, void *dev_id) { /* Schedule a card detection after a debounce timeout */ - mmc_detect_change(dev_id, msecs_to_jiffies(100)); + struct mmc_host *host = dev_id; + + if (host->ops->card_event) + host->ops->card_event(host); + + mmc_detect_change(host, msecs_to_jiffies(200)); + return IRQ_HANDLED; } @@ -86,6 +92,20 @@ int mmc_gpio_get_cd(struct mmc_host *host) } EXPORT_SYMBOL(mmc_gpio_get_cd); +/** + * mmc_gpio_request_ro - request a gpio for write-protection + * @host: mmc host + * @gpio: gpio number requested + * + * As devm_* managed functions are used in mmc_gpio_request_ro(), client + * drivers do not need to explicitly call mmc_gpio_free_ro() for freeing up, + * if the requesting and freeing are only needed at probing and unbinding time + * for once. However, if client drivers do something special like runtime + * switching for write-protection, they are responsible for calling + * mmc_gpio_request_ro() and mmc_gpio_free_ro() as a pair on their own. + * + * Returns zero on success, else an error. + */ int mmc_gpio_request_ro(struct mmc_host *host, unsigned int gpio) { struct mmc_gpio *ctx; @@ -100,7 +120,8 @@ int mmc_gpio_request_ro(struct mmc_host *host, unsigned int gpio) ctx = host->slot.handler_priv; - ret = gpio_request_one(gpio, GPIOF_DIR_IN, ctx->ro_label); + ret = devm_gpio_request_one(&host->class_dev, gpio, GPIOF_DIR_IN, + ctx->ro_label); if (ret < 0) return ret; @@ -110,6 +131,20 @@ int mmc_gpio_request_ro(struct mmc_host *host, unsigned int gpio) } EXPORT_SYMBOL(mmc_gpio_request_ro); +/** + * mmc_gpio_request_cd - request a gpio for card-detection + * @host: mmc host + * @gpio: gpio number requested + * + * As devm_* managed functions are used in mmc_gpio_request_cd(), client + * drivers do not need to explicitly call mmc_gpio_free_cd() for freeing up, + * if the requesting and freeing are only needed at probing and unbinding time + * for once. However, if client drivers do something special like runtime + * switching for card-detection, they are responsible for calling + * mmc_gpio_request_cd() and mmc_gpio_free_cd() as a pair on their own. + * + * Returns zero on success, else an error. + */ int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio) { struct mmc_gpio *ctx; @@ -122,7 +157,8 @@ int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio) ctx = host->slot.handler_priv; - ret = gpio_request_one(gpio, GPIOF_DIR_IN, ctx->cd_label); + ret = devm_gpio_request_one(&host->class_dev, gpio, GPIOF_DIR_IN, + ctx->cd_label); if (ret < 0) /* * don't bother freeing memory. It might still get used by other @@ -140,7 +176,8 @@ int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio) irq = -EINVAL; if (irq >= 0) { - ret = request_threaded_irq(irq, NULL, mmc_gpio_cd_irqt, + ret = devm_request_threaded_irq(&host->class_dev, irq, + NULL, mmc_gpio_cd_irqt, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, ctx->cd_label, host); if (ret < 0) @@ -158,6 +195,13 @@ int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio) } EXPORT_SYMBOL(mmc_gpio_request_cd); +/** + * mmc_gpio_free_ro - free the write-protection gpio + * @host: mmc host + * + * It's provided only for cases that client drivers need to manually free + * up the write-protection gpio requested by mmc_gpio_request_ro(). + */ void mmc_gpio_free_ro(struct mmc_host *host) { struct mmc_gpio *ctx = host->slot.handler_priv; @@ -169,10 +213,17 @@ void mmc_gpio_free_ro(struct mmc_host *host) gpio = ctx->ro_gpio; ctx->ro_gpio = -EINVAL; - gpio_free(gpio); + devm_gpio_free(&host->class_dev, gpio); } EXPORT_SYMBOL(mmc_gpio_free_ro); +/** + * mmc_gpio_free_cd - free the card-detection gpio + * @host: mmc host + * + * It's provided only for cases that client drivers need to manually free + * up the card-detection gpio requested by mmc_gpio_request_cd(). + */ void mmc_gpio_free_cd(struct mmc_host *host) { struct mmc_gpio *ctx = host->slot.handler_priv; @@ -182,13 +233,13 @@ void mmc_gpio_free_cd(struct mmc_host *host) return; if (host->slot.cd_irq >= 0) { - free_irq(host->slot.cd_irq, host); + devm_free_irq(&host->class_dev, host->slot.cd_irq, host); host->slot.cd_irq = -EINVAL; } gpio = ctx->cd_gpio; ctx->cd_gpio = -EINVAL; - gpio_free(gpio); + devm_gpio_free(&host->class_dev, gpio); } EXPORT_SYMBOL(mmc_gpio_free_cd); diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index 9bf10e7bbfaf..d88219e1d86e 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -69,7 +69,7 @@ config MMC_SDHCI_PCI If unsure, say N. config MMC_RICOH_MMC - bool "Ricoh MMC Controller Disabler (EXPERIMENTAL)" + bool "Ricoh MMC Controller Disabler" depends on MMC_SDHCI_PCI help This adds a pci quirk to disable Ricoh MMC Controller. This @@ -81,6 +81,18 @@ config MMC_RICOH_MMC If unsure, say Y. +config MMC_SDHCI_ACPI + tristate "SDHCI support for ACPI enumerated SDHCI controllers" + depends on MMC_SDHCI && ACPI + help + This selects support for ACPI enumerated SDHCI controllers, + identified by ACPI Compatibility ID PNP0D40 or specific + ACPI Hardware IDs. + + If you have a controller with this interface, say Y or M here. + + If unsure, say N. + config MMC_SDHCI_PLTFM tristate "SDHCI platform and OF driver helper" depends on MMC_SDHCI @@ -174,9 +186,6 @@ config MMC_SDHCI_S3C often referrered to as the HSMMC block in some of the Samsung S3C range of SoC. - Note, due to the problems with DMA, the DMA support is only - available with CONFIG_EXPERIMENTAL is selected. - If you have a controller with this interface, say Y or M here. If unsure, say N. @@ -221,7 +230,7 @@ config MMC_SDHCI_SPEAR config MMC_SDHCI_S3C_DMA bool "DMA support on S3C SDHCI" - depends on MMC_SDHCI_S3C && EXPERIMENTAL + depends on MMC_SDHCI_S3C help Enable DMA support on the Samsung S3C SDHCI glue. The DMA has proved to be problematic if the controller encounters @@ -229,6 +238,17 @@ config MMC_SDHCI_S3C_DMA YMMV. +config MMC_SDHCI_BCM2835 + tristate "SDHCI platform support for the BCM2835 SD/MMC Controller" + depends on ARCH_BCM2835 + depends on MMC_SDHCI_PLTFM + select MMC_SDHCI_IO_ACCESSORS + help + This selects the BCM2835 SD/MMC controller. If you have a BCM2835 + platform with SD or MMC devices, say Y or M here. + + If unsure, say N. + config MMC_OMAP tristate "TI OMAP Multimedia Card Interface support" depends on ARCH_OMAP @@ -270,26 +290,8 @@ config MMC_AU1X If unsure, say N. -choice - prompt "Atmel SD/MMC Driver" - depends on AVR32 || ARCH_AT91 - default MMC_ATMELMCI if AVR32 - help - Choose which driver to use for the Atmel MCI Silicon - -config MMC_AT91 - tristate "AT91 SD/MMC Card Interface support (DEPRECATED)" - depends on ARCH_AT91 - help - This selects the AT91 MCI controller. This driver will - be removed soon (for more information have a look to - Documentation/feature-removal-schedule.txt). Please use - MMC_ATMEL_MCI. - - If unsure, say N. - config MMC_ATMELMCI - tristate "Atmel Multimedia Card Interface support" + tristate "Atmel SD/MMC Driver (Multimedia Card Interface)" depends on AVR32 || ARCH_AT91 help This selects the Atmel Multimedia Card Interface driver. If @@ -298,8 +300,6 @@ config MMC_ATMELMCI If unsure, say N. -endchoice - config MMC_ATMELMCI_DMA bool "Atmel MCI DMA support" depends on MMC_ATMELMCI && (AVR32 || ARCH_AT91SAM9G45) && DMA_ENGINE @@ -338,8 +338,8 @@ config MMC_MXS If unsure, say N. config MMC_TIFM_SD - tristate "TI Flash Media MMC/SD Interface support (EXPERIMENTAL)" - depends on EXPERIMENTAL && PCI + tristate "TI Flash Media MMC/SD Interface support" + depends on PCI select TIFM_CORE help Say Y here if you want to be able to access MMC/SD cards with @@ -372,6 +372,13 @@ config MMC_DAVINCI If you have an DAVINCI board with a Multimedia Card slot, say Y or M here. If unsure, say N. +config MMC_GOLDFISH + tristate "goldfish qemu Multimedia Card Interface support" + depends on GOLDFISH + help + This selects the Goldfish Multimedia card Interface emulation + found on the Goldfish Android virtual device emulation. + config MMC_SPI tristate "MMC/SD/SDIO over SPI" depends on SPI_MASTER && !HIGHMEM && HAS_DMA @@ -418,8 +425,7 @@ config MMC_S3C_PIO the S3C MCI driver. config MMC_S3C_DMA - bool "Use DMA transfers only (EXPERIMENTAL)" - depends on EXPERIMENTAL + bool "Use DMA transfers only" help Use DMA to transfer data between memory and the hardare. @@ -428,7 +434,7 @@ config MMC_S3C_DMA option is useful. config MMC_S3C_PIODMA - bool "Support for both PIO and DMA (EXPERIMENTAL)" + bool "Support for both PIO and DMA" help Compile both the PIO and DMA transfer routines into the driver and let the platform select at run-time which one @@ -439,8 +445,8 @@ config MMC_S3C_PIODMA endchoice config MMC_SDRICOH_CS - tristate "MMC/SD driver for Ricoh Bay1Controllers (EXPERIMENTAL)" - depends on EXPERIMENTAL && PCI && PCMCIA + tristate "MMC/SD driver for Ricoh Bay1Controllers" + depends on PCI && PCMCIA help Say Y here if your Notebook reports a Ricoh Bay1Controller PCMCIA card whenever you insert a MMC or SD card into the card slot. @@ -469,7 +475,7 @@ config MMC_SDHI config MMC_CB710 tristate "ENE CB710 MMC/SD Interface support" - depends on PCI + depends on PCI && GENERIC_HARDIRQS select CB710_CORE help This option enables support for MMC/SD part of ENE CB710/720 Flash @@ -541,7 +547,7 @@ config MMC_DW_PLTFM If unsure, say Y. config MMC_DW_EXYNOS - tristate "Exynos specific extentions for Synopsys DW Memory Card Interface" + tristate "Exynos specific extensions for Synopsys DW Memory Card Interface" depends on MMC_DW select MMC_DW_PLTFM help @@ -621,3 +627,21 @@ config MMC_USHC Note: These controllers only support SDIO cards and do not support MMC or SD memory cards. + +config MMC_WMT + tristate "Wondermedia SD/MMC Host Controller support" + depends on ARCH_VT8500 + default y + help + This selects support for the SD/MMC Host Controller on + Wondermedia WM8505/WM8650 based SoCs. + + To compile this driver as a module, choose M here: the + module will be called wmt-sdmmc. + +config MMC_REALTEK_PCI + tristate "Realtek PCI-E SD/MMC Card Interface Driver" + depends on MFD_RTSX_PCI + help + Say Y here to include driver code to support SD/MMC card interface + of Realtek PCI-E card reader diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile index 17ad0a7ba40b..c380e3cf0a3b 100644 --- a/drivers/mmc/host/Makefile +++ b/drivers/mmc/host/Makefile @@ -9,6 +9,7 @@ obj-$(CONFIG_MMC_MXS) += mxs-mmc.o obj-$(CONFIG_MMC_SDHCI) += sdhci.o obj-$(CONFIG_MMC_SDHCI_PCI) += sdhci-pci.o obj-$(subst m,y,$(CONFIG_MMC_SDHCI_PCI)) += sdhci-pci-data.o +obj-$(CONFIG_MMC_SDHCI_ACPI) += sdhci-acpi.o obj-$(CONFIG_MMC_SDHCI_PXAV3) += sdhci-pxav3.o obj-$(CONFIG_MMC_SDHCI_PXAV2) += sdhci-pxav2.o obj-$(CONFIG_MMC_SDHCI_S3C) += sdhci-s3c.o @@ -17,12 +18,12 @@ obj-$(CONFIG_MMC_WBSD) += wbsd.o obj-$(CONFIG_MMC_AU1X) += au1xmmc.o obj-$(CONFIG_MMC_OMAP) += omap.o obj-$(CONFIG_MMC_OMAP_HS) += omap_hsmmc.o -obj-$(CONFIG_MMC_AT91) += at91_mci.o obj-$(CONFIG_MMC_ATMELMCI) += atmel-mci.o obj-$(CONFIG_MMC_TIFM_SD) += tifm_sd.o obj-$(CONFIG_MMC_MSM) += msm_sdcc.o obj-$(CONFIG_MMC_MVSDIO) += mvsdio.o obj-$(CONFIG_MMC_DAVINCI) += davinci_mmc.o +obj-$(CONFIG_MMC_GOLDFISH) += android-goldfish.o obj-$(CONFIG_MMC_SPI) += mmc_spi.o ifeq ($(CONFIG_OF),y) obj-$(CONFIG_MMC_SPI) += of_mmc_spi.o @@ -45,6 +46,11 @@ obj-$(CONFIG_MMC_SH_MMCIF) += sh_mmcif.o obj-$(CONFIG_MMC_JZ4740) += jz4740_mmc.o obj-$(CONFIG_MMC_VUB300) += vub300.o obj-$(CONFIG_MMC_USHC) += ushc.o +obj-$(CONFIG_MMC_WMT) += wmt-sdmmc.o + +obj-$(CONFIG_MMC_REALTEK_PCI) += rtsx_pci_sdmmc.o + +obj-$(CONFIG_MMC_REALTEK_PCI) += rtsx_pci_sdmmc.o obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-pltfm.o obj-$(CONFIG_MMC_SDHCI_CNS3XXX) += sdhci-cns3xxx.o @@ -53,6 +59,7 @@ obj-$(CONFIG_MMC_SDHCI_DOVE) += sdhci-dove.o obj-$(CONFIG_MMC_SDHCI_TEGRA) += sdhci-tegra.o obj-$(CONFIG_MMC_SDHCI_OF_ESDHC) += sdhci-of-esdhc.o obj-$(CONFIG_MMC_SDHCI_OF_HLWD) += sdhci-of-hlwd.o +obj-$(CONFIG_MMC_SDHCI_BCM2835) += sdhci-bcm2835.o ifeq ($(CONFIG_CB710_DEBUG),y) CFLAGS-cb710-mmc += -DDEBUG diff --git a/drivers/mmc/host/android-goldfish.c b/drivers/mmc/host/android-goldfish.c new file mode 100644 index 000000000000..ef3aef0f376d --- /dev/null +++ b/drivers/mmc/host/android-goldfish.c @@ -0,0 +1,570 @@ +/* + * Copyright 2007, Google Inc. + * Copyright 2012, Intel Inc. + * + * based on omap.c driver, which was + * Copyright (C) 2004 Nokia Corporation + * Written by Tuukka Tikkanen and Juha Yrjölä <juha.yrjola@nokia.com> + * Misc hacks here and there by Tony Lindgren <tony@atomide.com> + * Other hacks (DMA, SD, etc) by David Brownell + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/major.h> + +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/interrupt.h> + +#include <linux/kernel.h> +#include <linux/fs.h> +#include <linux/errno.h> +#include <linux/hdreg.h> +#include <linux/kdev_t.h> +#include <linux/blkdev.h> +#include <linux/mutex.h> +#include <linux/scatterlist.h> +#include <linux/mmc/mmc.h> +#include <linux/mmc/sdio.h> +#include <linux/mmc/host.h> +#include <linux/mmc/card.h> + +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/dma-mapping.h> +#include <linux/delay.h> +#include <linux/spinlock.h> +#include <linux/timer.h> +#include <linux/clk.h> + +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/scatterlist.h> + +#include <asm/types.h> +#include <asm/io.h> +#include <asm/uaccess.h> + +#define DRIVER_NAME "goldfish_mmc" + +#define BUFFER_SIZE 16384 + +#define GOLDFISH_MMC_READ(host, addr) (readl(host->reg_base + addr)) +#define GOLDFISH_MMC_WRITE(host, addr, x) (writel(x, host->reg_base + addr)) + +enum { + /* status register */ + MMC_INT_STATUS = 0x00, + /* set this to enable IRQ */ + MMC_INT_ENABLE = 0x04, + /* set this to specify buffer address */ + MMC_SET_BUFFER = 0x08, + + /* MMC command number */ + MMC_CMD = 0x0C, + + /* MMC argument */ + MMC_ARG = 0x10, + + /* MMC response (or R2 bits 0 - 31) */ + MMC_RESP_0 = 0x14, + + /* MMC R2 response bits 32 - 63 */ + MMC_RESP_1 = 0x18, + + /* MMC R2 response bits 64 - 95 */ + MMC_RESP_2 = 0x1C, + + /* MMC R2 response bits 96 - 127 */ + MMC_RESP_3 = 0x20, + + MMC_BLOCK_LENGTH = 0x24, + MMC_BLOCK_COUNT = 0x28, + + /* MMC state flags */ + MMC_STATE = 0x2C, + + /* MMC_INT_STATUS bits */ + + MMC_STAT_END_OF_CMD = 1U << 0, + MMC_STAT_END_OF_DATA = 1U << 1, + MMC_STAT_STATE_CHANGE = 1U << 2, + MMC_STAT_CMD_TIMEOUT = 1U << 3, + + /* MMC_STATE bits */ + MMC_STATE_INSERTED = 1U << 0, + MMC_STATE_READ_ONLY = 1U << 1, +}; + +/* + * Command types + */ +#define OMAP_MMC_CMDTYPE_BC 0 +#define OMAP_MMC_CMDTYPE_BCR 1 +#define OMAP_MMC_CMDTYPE_AC 2 +#define OMAP_MMC_CMDTYPE_ADTC 3 + + +struct goldfish_mmc_host { + struct mmc_request *mrq; + struct mmc_command *cmd; + struct mmc_data *data; + struct mmc_host *mmc; + struct device *dev; + unsigned char id; /* 16xx chips have 2 MMC blocks */ + void __iomem *virt_base; + unsigned int phys_base; + int irq; + unsigned char bus_mode; + unsigned char hw_bus_mode; + + unsigned int sg_len; + unsigned dma_done:1; + unsigned dma_in_use:1; + + void __iomem *reg_base; +}; + +static inline int +goldfish_mmc_cover_is_open(struct goldfish_mmc_host *host) +{ + return 0; +} + +static ssize_t +goldfish_mmc_show_cover_switch(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct goldfish_mmc_host *host = dev_get_drvdata(dev); + + return sprintf(buf, "%s\n", goldfish_mmc_cover_is_open(host) ? "open" : + "closed"); +} + +static DEVICE_ATTR(cover_switch, S_IRUGO, goldfish_mmc_show_cover_switch, NULL); + +static void +goldfish_mmc_start_command(struct goldfish_mmc_host *host, struct mmc_command *cmd) +{ + u32 cmdreg; + u32 resptype; + u32 cmdtype; + + host->cmd = cmd; + + resptype = 0; + cmdtype = 0; + + /* Our hardware needs to know exact type */ + switch (mmc_resp_type(cmd)) { + case MMC_RSP_NONE: + break; + case MMC_RSP_R1: + case MMC_RSP_R1B: + /* resp 1, 1b, 6, 7 */ + resptype = 1; + break; + case MMC_RSP_R2: + resptype = 2; + break; + case MMC_RSP_R3: + resptype = 3; + break; + default: + dev_err(mmc_dev(host->mmc), + "Invalid response type: %04x\n", mmc_resp_type(cmd)); + break; + } + + if (mmc_cmd_type(cmd) == MMC_CMD_ADTC) + cmdtype = OMAP_MMC_CMDTYPE_ADTC; + else if (mmc_cmd_type(cmd) == MMC_CMD_BC) + cmdtype = OMAP_MMC_CMDTYPE_BC; + else if (mmc_cmd_type(cmd) == MMC_CMD_BCR) + cmdtype = OMAP_MMC_CMDTYPE_BCR; + else + cmdtype = OMAP_MMC_CMDTYPE_AC; + + cmdreg = cmd->opcode | (resptype << 8) | (cmdtype << 12); + + if (host->bus_mode == MMC_BUSMODE_OPENDRAIN) + cmdreg |= 1 << 6; + + if (cmd->flags & MMC_RSP_BUSY) + cmdreg |= 1 << 11; + + if (host->data && !(host->data->flags & MMC_DATA_WRITE)) + cmdreg |= 1 << 15; + + GOLDFISH_MMC_WRITE(host, MMC_ARG, cmd->arg); + GOLDFISH_MMC_WRITE(host, MMC_CMD, cmdreg); +} + +static void goldfish_mmc_xfer_done(struct goldfish_mmc_host *host, + struct mmc_data *data) +{ + if (host->dma_in_use) { + enum dma_data_direction dma_data_dir; + + if (data->flags & MMC_DATA_WRITE) + dma_data_dir = DMA_TO_DEVICE; + else + dma_data_dir = DMA_FROM_DEVICE; + + if (dma_data_dir == DMA_FROM_DEVICE) { + /* + * We don't really have DMA, so we need + * to copy from our platform driver buffer + */ + uint8_t *dest = (uint8_t *)sg_virt(data->sg); + memcpy(dest, host->virt_base, data->sg->length); + } + host->data->bytes_xfered += data->sg->length; + dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->sg_len, + dma_data_dir); + } + + host->data = NULL; + host->sg_len = 0; + + /* + * NOTE: MMC layer will sometimes poll-wait CMD13 next, issuing + * dozens of requests until the card finishes writing data. + * It'd be cheaper to just wait till an EOFB interrupt arrives... + */ + + if (!data->stop) { + host->mrq = NULL; + mmc_request_done(host->mmc, data->mrq); + return; + } + + goldfish_mmc_start_command(host, data->stop); +} + +static void goldfish_mmc_end_of_data(struct goldfish_mmc_host *host, + struct mmc_data *data) +{ + if (!host->dma_in_use) { + goldfish_mmc_xfer_done(host, data); + return; + } + if (host->dma_done) + goldfish_mmc_xfer_done(host, data); +} + +static void goldfish_mmc_cmd_done(struct goldfish_mmc_host *host, + struct mmc_command *cmd) +{ + host->cmd = NULL; + if (cmd->flags & MMC_RSP_PRESENT) { + if (cmd->flags & MMC_RSP_136) { + /* response type 2 */ + cmd->resp[3] = + GOLDFISH_MMC_READ(host, MMC_RESP_0); + cmd->resp[2] = + GOLDFISH_MMC_READ(host, MMC_RESP_1); + cmd->resp[1] = + GOLDFISH_MMC_READ(host, MMC_RESP_2); + cmd->resp[0] = + GOLDFISH_MMC_READ(host, MMC_RESP_3); + } else { + /* response types 1, 1b, 3, 4, 5, 6 */ + cmd->resp[0] = + GOLDFISH_MMC_READ(host, MMC_RESP_0); + } + } + + if (host->data == NULL || cmd->error) { + host->mrq = NULL; + mmc_request_done(host->mmc, cmd->mrq); + } +} + +static irqreturn_t goldfish_mmc_irq(int irq, void *dev_id) +{ + struct goldfish_mmc_host *host = (struct goldfish_mmc_host *)dev_id; + u16 status; + int end_command = 0; + int end_transfer = 0; + int transfer_error = 0; + int state_changed = 0; + int cmd_timeout = 0; + + while ((status = GOLDFISH_MMC_READ(host, MMC_INT_STATUS)) != 0) { + GOLDFISH_MMC_WRITE(host, MMC_INT_STATUS, status); + + if (status & MMC_STAT_END_OF_CMD) + end_command = 1; + + if (status & MMC_STAT_END_OF_DATA) + end_transfer = 1; + + if (status & MMC_STAT_STATE_CHANGE) + state_changed = 1; + + if (status & MMC_STAT_CMD_TIMEOUT) { + end_command = 0; + cmd_timeout = 1; + } + } + + if (cmd_timeout) { + struct mmc_request *mrq = host->mrq; + mrq->cmd->error = -ETIMEDOUT; + host->mrq = NULL; + mmc_request_done(host->mmc, mrq); + } + + if (end_command) + goldfish_mmc_cmd_done(host, host->cmd); + + if (transfer_error) + goldfish_mmc_xfer_done(host, host->data); + else if (end_transfer) { + host->dma_done = 1; + goldfish_mmc_end_of_data(host, host->data); + } else if (host->data != NULL) { + /* + * WORKAROUND -- after porting this driver from 2.6 to 3.4, + * during device initialization, cases where host->data is + * non-null but end_transfer is false would occur. Doing + * nothing in such cases results in no further interrupts, + * and initialization failure. + * TODO -- find the real cause. + */ + host->dma_done = 1; + goldfish_mmc_end_of_data(host, host->data); + } + + if (state_changed) { + u32 state = GOLDFISH_MMC_READ(host, MMC_STATE); + pr_info("%s: Card detect now %d\n", __func__, + (state & MMC_STATE_INSERTED)); + mmc_detect_change(host->mmc, 0); + } + + if (!end_command && !end_transfer && + !transfer_error && !state_changed && !cmd_timeout) { + status = GOLDFISH_MMC_READ(host, MMC_INT_STATUS); + dev_info(mmc_dev(host->mmc),"spurious irq 0x%04x\n", status); + if (status != 0) { + GOLDFISH_MMC_WRITE(host, MMC_INT_STATUS, status); + GOLDFISH_MMC_WRITE(host, MMC_INT_ENABLE, 0); + } + } + + return IRQ_HANDLED; +} + +static void goldfish_mmc_prepare_data(struct goldfish_mmc_host *host, + struct mmc_request *req) +{ + struct mmc_data *data = req->data; + int block_size; + unsigned sg_len; + enum dma_data_direction dma_data_dir; + + host->data = data; + if (data == NULL) { + GOLDFISH_MMC_WRITE(host, MMC_BLOCK_LENGTH, 0); + GOLDFISH_MMC_WRITE(host, MMC_BLOCK_COUNT, 0); + host->dma_in_use = 0; + return; + } + + block_size = data->blksz; + + GOLDFISH_MMC_WRITE(host, MMC_BLOCK_COUNT, data->blocks - 1); + GOLDFISH_MMC_WRITE(host, MMC_BLOCK_LENGTH, block_size - 1); + + /* + * Cope with calling layer confusion; it issues "single + * block" writes using multi-block scatterlists. + */ + sg_len = (data->blocks == 1) ? 1 : data->sg_len; + + if (data->flags & MMC_DATA_WRITE) + dma_data_dir = DMA_TO_DEVICE; + else + dma_data_dir = DMA_FROM_DEVICE; + + host->sg_len = dma_map_sg(mmc_dev(host->mmc), data->sg, + sg_len, dma_data_dir); + host->dma_done = 0; + host->dma_in_use = 1; + + if (dma_data_dir == DMA_TO_DEVICE) { + /* + * We don't really have DMA, so we need to copy to our + * platform driver buffer + */ + const uint8_t *src = (uint8_t *)sg_virt(data->sg); + memcpy(host->virt_base, src, data->sg->length); + } +} + +static void goldfish_mmc_request(struct mmc_host *mmc, struct mmc_request *req) +{ + struct goldfish_mmc_host *host = mmc_priv(mmc); + + WARN_ON(host->mrq != NULL); + + host->mrq = req; + goldfish_mmc_prepare_data(host, req); + goldfish_mmc_start_command(host, req->cmd); + + /* + * This is to avoid accidentally being detected as an SDIO card + * in mmc_attach_sdio(). + */ + if (req->cmd->opcode == SD_IO_SEND_OP_COND && + req->cmd->flags == (MMC_RSP_SPI_R4 | MMC_RSP_R4 | MMC_CMD_BCR)) + req->cmd->error = -EINVAL; +} + +static void goldfish_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) +{ + struct goldfish_mmc_host *host = mmc_priv(mmc); + + host->bus_mode = ios->bus_mode; + host->hw_bus_mode = host->bus_mode; +} + +static int goldfish_mmc_get_ro(struct mmc_host *mmc) +{ + uint32_t state; + struct goldfish_mmc_host *host = mmc_priv(mmc); + + state = GOLDFISH_MMC_READ(host, MMC_STATE); + return ((state & MMC_STATE_READ_ONLY) != 0); +} + +static const struct mmc_host_ops goldfish_mmc_ops = { + .request = goldfish_mmc_request, + .set_ios = goldfish_mmc_set_ios, + .get_ro = goldfish_mmc_get_ro, +}; + +static int goldfish_mmc_probe(struct platform_device *pdev) +{ + struct mmc_host *mmc; + struct goldfish_mmc_host *host = NULL; + struct resource *res; + int ret = 0; + int irq; + dma_addr_t buf_addr; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + irq = platform_get_irq(pdev, 0); + if (res == NULL || irq < 0) + return -ENXIO; + + mmc = mmc_alloc_host(sizeof(struct goldfish_mmc_host), &pdev->dev); + if (mmc == NULL) { + ret = -ENOMEM; + goto err_alloc_host_failed; + } + + host = mmc_priv(mmc); + host->mmc = mmc; + + pr_err("mmc: Mapping %lX to %lX\n", (long)res->start, (long)res->end); + host->reg_base = ioremap(res->start, res->end - res->start + 1); + if (host->reg_base == NULL) { + ret = -ENOMEM; + goto ioremap_failed; + } + host->virt_base = dma_alloc_coherent(&pdev->dev, BUFFER_SIZE, + &buf_addr, GFP_KERNEL); + + if (host->virt_base == 0) { + ret = -ENOMEM; + goto dma_alloc_failed; + } + host->phys_base = buf_addr; + + host->id = pdev->id; + host->irq = irq; + + mmc->ops = &goldfish_mmc_ops; + mmc->f_min = 400000; + mmc->f_max = 24000000; + mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; + mmc->caps = MMC_CAP_4_BIT_DATA; + + /* Use scatterlist DMA to reduce per-transfer costs. + * NOTE max_seg_size assumption that small blocks aren't + * normally used (except e.g. for reading SD registers). + */ + mmc->max_segs = 32; + mmc->max_blk_size = 2048; /* MMC_BLOCK_LENGTH is 11 bits (+1) */ + mmc->max_blk_count = 2048; /* MMC_BLOCK_COUNT is 11 bits (+1) */ + mmc->max_req_size = BUFFER_SIZE; + mmc->max_seg_size = mmc->max_req_size; + + ret = request_irq(host->irq, goldfish_mmc_irq, 0, DRIVER_NAME, host); + if (ret) { + dev_err(&pdev->dev, "Failed IRQ Adding goldfish MMC\n"); + goto err_request_irq_failed; + } + + host->dev = &pdev->dev; + platform_set_drvdata(pdev, host); + + ret = device_create_file(&pdev->dev, &dev_attr_cover_switch); + if (ret) + dev_warn(mmc_dev(host->mmc), + "Unable to create sysfs attributes\n"); + + GOLDFISH_MMC_WRITE(host, MMC_SET_BUFFER, host->phys_base); + GOLDFISH_MMC_WRITE(host, MMC_INT_ENABLE, + MMC_STAT_END_OF_CMD | MMC_STAT_END_OF_DATA | + MMC_STAT_STATE_CHANGE | MMC_STAT_CMD_TIMEOUT); + + mmc_add_host(mmc); + return 0; + +err_request_irq_failed: + dma_free_coherent(&pdev->dev, BUFFER_SIZE, host->virt_base, + host->phys_base); +dma_alloc_failed: + iounmap(host->reg_base); +ioremap_failed: + mmc_free_host(host->mmc); +err_alloc_host_failed: + return ret; +} + +static int goldfish_mmc_remove(struct platform_device *pdev) +{ + struct goldfish_mmc_host *host = platform_get_drvdata(pdev); + + platform_set_drvdata(pdev, NULL); + + BUG_ON(host == NULL); + + mmc_remove_host(host->mmc); + free_irq(host->irq, host); + dma_free_coherent(&pdev->dev, BUFFER_SIZE, host->virt_base, host->phys_base); + iounmap(host->reg_base); + mmc_free_host(host->mmc); + return 0; +} + +static struct platform_driver goldfish_mmc_driver = { + .probe = goldfish_mmc_probe, + .remove = goldfish_mmc_remove, + .driver = { + .name = DRIVER_NAME, + }, +}; + +module_platform_driver(goldfish_mmc_driver); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c deleted file mode 100644 index 74bed0fc23e7..000000000000 --- a/drivers/mmc/host/at91_mci.c +++ /dev/null @@ -1,1219 +0,0 @@ -/* - * linux/drivers/mmc/host/at91_mci.c - ATMEL AT91 MCI Driver - * - * Copyright (C) 2005 Cougar Creek Computing Devices Ltd, All Rights Reserved - * - * Copyright (C) 2006 Malcolm Noyes - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -/* - This is the AT91 MCI driver that has been tested with both MMC cards - and SD-cards. Boards that support write protect are now supported. - The CCAT91SBC001 board does not support SD cards. - - The three entry points are at91_mci_request, at91_mci_set_ios - and at91_mci_get_ro. - - SET IOS - This configures the device to put it into the correct mode and clock speed - required. - - MCI REQUEST - MCI request processes the commands sent in the mmc_request structure. This - can consist of a processing command and a stop command in the case of - multiple block transfers. - - There are three main types of request, commands, reads and writes. - - Commands are straight forward. The command is submitted to the controller and - the request function returns. When the controller generates an interrupt to indicate - the command is finished, the response to the command are read and the mmc_request_done - function called to end the request. - - Reads and writes work in a similar manner to normal commands but involve the PDC (DMA) - controller to manage the transfers. - - A read is done from the controller directly to the scatterlist passed in from the request. - Due to a bug in the AT91RM9200 controller, when a read is completed, all the words are byte - swapped in the scatterlist buffers. AT91SAM926x are not affected by this bug. - - The sequence of read interrupts is: ENDRX, RXBUFF, CMDRDY - - A write is slightly different in that the bytes to write are read from the scatterlist - into a dma memory buffer (this is in case the source buffer should be read only). The - entire write buffer is then done from this single dma memory buffer. - - The sequence of write interrupts is: ENDTX, TXBUFE, NOTBUSY, CMDRDY - - GET RO - Gets the status of the write protect pin, if available. -*/ - -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/init.h> -#include <linux/ioport.h> -#include <linux/platform_device.h> -#include <linux/interrupt.h> -#include <linux/blkdev.h> -#include <linux/delay.h> -#include <linux/err.h> -#include <linux/dma-mapping.h> -#include <linux/clk.h> -#include <linux/atmel_pdc.h> -#include <linux/gfp.h> -#include <linux/highmem.h> - -#include <linux/mmc/host.h> -#include <linux/mmc/sdio.h> - -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/gpio.h> - -#include <mach/board.h> -#include <mach/cpu.h> - -#include "at91_mci.h" - -#define DRIVER_NAME "at91_mci" - -static inline int at91mci_is_mci1rev2xx(void) -{ - return ( cpu_is_at91sam9260() - || cpu_is_at91sam9263() - || cpu_is_at91sam9rl() - || cpu_is_at91sam9g10() - || cpu_is_at91sam9g20() - ); -} - -#define FL_SENT_COMMAND (1 << 0) -#define FL_SENT_STOP (1 << 1) - -#define AT91_MCI_ERRORS (AT91_MCI_RINDE | AT91_MCI_RDIRE | AT91_MCI_RCRCE \ - | AT91_MCI_RENDE | AT91_MCI_RTOE | AT91_MCI_DCRCE \ - | AT91_MCI_DTOE | AT91_MCI_OVRE | AT91_MCI_UNRE) - -#define at91_mci_read(host, reg) __raw_readl((host)->baseaddr + (reg)) -#define at91_mci_write(host, reg, val) __raw_writel((val), (host)->baseaddr + (reg)) - -#define MCI_BLKSIZE 512 -#define MCI_MAXBLKSIZE 4095 -#define MCI_BLKATONCE 256 -#define MCI_BUFSIZE (MCI_BLKSIZE * MCI_BLKATONCE) - -/* - * Low level type for this driver - */ -struct at91mci_host -{ - struct mmc_host *mmc; - struct mmc_command *cmd; - struct mmc_request *request; - - void __iomem *baseaddr; - int irq; - - struct at91_mmc_data *board; - int present; - - struct clk *mci_clk; - - /* - * Flag indicating when the command has been sent. This is used to - * work out whether or not to send the stop - */ - unsigned int flags; - /* flag for current bus settings */ - u32 bus_mode; - - /* DMA buffer used for transmitting */ - unsigned int* buffer; - dma_addr_t physical_address; - unsigned int total_length; - - /* Latest in the scatterlist that has been enabled for transfer, but not freed */ - int in_use_index; - - /* Latest in the scatterlist that has been enabled for transfer */ - int transfer_index; - - /* Timer for timeouts */ - struct timer_list timer; -}; - -/* - * Reset the controller and restore most of the state - */ -static void at91_reset_host(struct at91mci_host *host) -{ - unsigned long flags; - u32 mr; - u32 sdcr; - u32 dtor; - u32 imr; - - local_irq_save(flags); - imr = at91_mci_read(host, AT91_MCI_IMR); - - at91_mci_write(host, AT91_MCI_IDR, 0xffffffff); - - /* save current state */ - mr = at91_mci_read(host, AT91_MCI_MR) & 0x7fff; - sdcr = at91_mci_read(host, AT91_MCI_SDCR); - dtor = at91_mci_read(host, AT91_MCI_DTOR); - - /* reset the controller */ - at91_mci_write(host, AT91_MCI_CR, AT91_MCI_MCIDIS | AT91_MCI_SWRST); - - /* restore state */ - at91_mci_write(host, AT91_MCI_CR, AT91_MCI_MCIEN); - at91_mci_write(host, AT91_MCI_MR, mr); - at91_mci_write(host, AT91_MCI_SDCR, sdcr); - at91_mci_write(host, AT91_MCI_DTOR, dtor); - at91_mci_write(host, AT91_MCI_IER, imr); - - /* make sure sdio interrupts will fire */ - at91_mci_read(host, AT91_MCI_SR); - - local_irq_restore(flags); -} - -static void at91_timeout_timer(unsigned long data) -{ - struct at91mci_host *host; - - host = (struct at91mci_host *)data; - - if (host->request) { - dev_err(host->mmc->parent, "Timeout waiting end of packet\n"); - - if (host->cmd && host->cmd->data) { - host->cmd->data->error = -ETIMEDOUT; - } else { - if (host->cmd) - host->cmd->error = -ETIMEDOUT; - else - host->request->cmd->error = -ETIMEDOUT; - } - - at91_reset_host(host); - mmc_request_done(host->mmc, host->request); - } -} - -/* - * Copy from sg to a dma block - used for transfers - */ -static inline void at91_mci_sg_to_dma(struct at91mci_host *host, struct mmc_data *data) -{ - unsigned int len, i, size; - unsigned *dmabuf = host->buffer; - - size = data->blksz * data->blocks; - len = data->sg_len; - - /* MCI1 rev2xx Data Write Operation and number of bytes erratum */ - if (at91mci_is_mci1rev2xx()) - if (host->total_length == 12) - memset(dmabuf, 0, 12); - - /* - * Just loop through all entries. Size might not - * be the entire list though so make sure that - * we do not transfer too much. - */ - for (i = 0; i < len; i++) { - struct scatterlist *sg; - int amount; - unsigned int *sgbuffer; - - sg = &data->sg[i]; - - sgbuffer = kmap_atomic(sg_page(sg)) + sg->offset; - amount = min(size, sg->length); - size -= amount; - - if (cpu_is_at91rm9200()) { /* AT91RM9200 errata */ - int index; - - for (index = 0; index < (amount / 4); index++) - *dmabuf++ = swab32(sgbuffer[index]); - } else { - char *tmpv = (char *)dmabuf; - memcpy(tmpv, sgbuffer, amount); - tmpv += amount; - dmabuf = (unsigned *)tmpv; - } - - kunmap_atomic(sgbuffer); - - if (size == 0) - break; - } - - /* - * Check that we didn't get a request to transfer - * more data than can fit into the SG list. - */ - BUG_ON(size != 0); -} - -/* - * Handle after a dma read - */ -static void at91_mci_post_dma_read(struct at91mci_host *host) -{ - struct mmc_command *cmd; - struct mmc_data *data; - unsigned int len, i, size; - unsigned *dmabuf = host->buffer; - - pr_debug("post dma read\n"); - - cmd = host->cmd; - if (!cmd) { - pr_debug("no command\n"); - return; - } - - data = cmd->data; - if (!data) { - pr_debug("no data\n"); - return; - } - - size = data->blksz * data->blocks; - len = data->sg_len; - - at91_mci_write(host, AT91_MCI_IDR, AT91_MCI_ENDRX); - at91_mci_write(host, AT91_MCI_IER, AT91_MCI_RXBUFF); - - for (i = 0; i < len; i++) { - struct scatterlist *sg; - int amount; - unsigned int *sgbuffer; - - sg = &data->sg[i]; - - sgbuffer = kmap_atomic(sg_page(sg)) + sg->offset; - amount = min(size, sg->length); - size -= amount; - - if (cpu_is_at91rm9200()) { /* AT91RM9200 errata */ - int index; - for (index = 0; index < (amount / 4); index++) - sgbuffer[index] = swab32(*dmabuf++); - } else { - char *tmpv = (char *)dmabuf; - memcpy(sgbuffer, tmpv, amount); - tmpv += amount; - dmabuf = (unsigned *)tmpv; - } - - flush_kernel_dcache_page(sg_page(sg)); - kunmap_atomic(sgbuffer); - data->bytes_xfered += amount; - if (size == 0) - break; - } - - pr_debug("post dma read done\n"); -} - -/* - * Handle transmitted data - */ -static void at91_mci_handle_transmitted(struct at91mci_host *host) -{ - struct mmc_command *cmd; - struct mmc_data *data; - - pr_debug("Handling the transmit\n"); - - /* Disable the transfer */ - at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS | ATMEL_PDC_TXTDIS); - - /* Now wait for cmd ready */ - at91_mci_write(host, AT91_MCI_IDR, AT91_MCI_TXBUFE); - - cmd = host->cmd; - if (!cmd) return; - - data = cmd->data; - if (!data) return; - - if (cmd->data->blocks > 1) { - pr_debug("multiple write : wait for BLKE...\n"); - at91_mci_write(host, AT91_MCI_IER, AT91_MCI_BLKE); - } else - at91_mci_write(host, AT91_MCI_IER, AT91_MCI_NOTBUSY); -} - -/* - * Update bytes transfered count during a write operation - */ -static void at91_mci_update_bytes_xfered(struct at91mci_host *host) -{ - struct mmc_data *data; - - /* always deal with the effective request (and not the current cmd) */ - - if (host->request->cmd && host->request->cmd->error != 0) - return; - - if (host->request->data) { - data = host->request->data; - if (data->flags & MMC_DATA_WRITE) { - /* card is in IDLE mode now */ - pr_debug("-> bytes_xfered %d, total_length = %d\n", - data->bytes_xfered, host->total_length); - data->bytes_xfered = data->blksz * data->blocks; - } - } -} - - -/*Handle after command sent ready*/ -static int at91_mci_handle_cmdrdy(struct at91mci_host *host) -{ - if (!host->cmd) - return 1; - else if (!host->cmd->data) { - if (host->flags & FL_SENT_STOP) { - /*After multi block write, we must wait for NOTBUSY*/ - at91_mci_write(host, AT91_MCI_IER, AT91_MCI_NOTBUSY); - } else return 1; - } else if (host->cmd->data->flags & MMC_DATA_WRITE) { - /*After sendding multi-block-write command, start DMA transfer*/ - at91_mci_write(host, AT91_MCI_IER, AT91_MCI_TXBUFE | AT91_MCI_BLKE); - at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN); - } - - /* command not completed, have to wait */ - return 0; -} - - -/* - * Enable the controller - */ -static void at91_mci_enable(struct at91mci_host *host) -{ - unsigned int mr; - - at91_mci_write(host, AT91_MCI_CR, AT91_MCI_MCIEN); - at91_mci_write(host, AT91_MCI_IDR, 0xffffffff); - at91_mci_write(host, AT91_MCI_DTOR, AT91_MCI_DTOMUL_1M | AT91_MCI_DTOCYC); - mr = AT91_MCI_PDCMODE | 0x34a; - - if (at91mci_is_mci1rev2xx()) - mr |= AT91_MCI_RDPROOF | AT91_MCI_WRPROOF; - - at91_mci_write(host, AT91_MCI_MR, mr); - - /* use Slot A or B (only one at same time) */ - at91_mci_write(host, AT91_MCI_SDCR, host->board->slot_b); -} - -/* - * Disable the controller - */ -static void at91_mci_disable(struct at91mci_host *host) -{ - at91_mci_write(host, AT91_MCI_CR, AT91_MCI_MCIDIS | AT91_MCI_SWRST); -} - -/* - * Send a command - */ -static void at91_mci_send_command(struct at91mci_host *host, struct mmc_command *cmd) -{ - unsigned int cmdr, mr; - unsigned int block_length; - struct mmc_data *data = cmd->data; - - unsigned int blocks; - unsigned int ier = 0; - - host->cmd = cmd; - - /* Needed for leaving busy state before CMD1 */ - if ((at91_mci_read(host, AT91_MCI_SR) & AT91_MCI_RTOE) && (cmd->opcode == 1)) { - pr_debug("Clearing timeout\n"); - at91_mci_write(host, AT91_MCI_ARGR, 0); - at91_mci_write(host, AT91_MCI_CMDR, AT91_MCI_OPDCMD); - while (!(at91_mci_read(host, AT91_MCI_SR) & AT91_MCI_CMDRDY)) { - /* spin */ - pr_debug("Clearing: SR = %08X\n", at91_mci_read(host, AT91_MCI_SR)); - } - } - - cmdr = cmd->opcode; - - if (mmc_resp_type(cmd) == MMC_RSP_NONE) - cmdr |= AT91_MCI_RSPTYP_NONE; - else { - /* if a response is expected then allow maximum response latancy */ - cmdr |= AT91_MCI_MAXLAT; - /* set 136 bit response for R2, 48 bit response otherwise */ - if (mmc_resp_type(cmd) == MMC_RSP_R2) - cmdr |= AT91_MCI_RSPTYP_136; - else - cmdr |= AT91_MCI_RSPTYP_48; - } - - if (data) { - - if (cpu_is_at91rm9200() || cpu_is_at91sam9261()) { - if (data->blksz & 0x3) { - pr_debug("Unsupported block size\n"); - cmd->error = -EINVAL; - mmc_request_done(host->mmc, host->request); - return; - } - if (data->flags & MMC_DATA_STREAM) { - pr_debug("Stream commands not supported\n"); - cmd->error = -EINVAL; - mmc_request_done(host->mmc, host->request); - return; - } - } - - block_length = data->blksz; - blocks = data->blocks; - - /* always set data start - also set direction flag for read */ - if (data->flags & MMC_DATA_READ) - cmdr |= (AT91_MCI_TRDIR | AT91_MCI_TRCMD_START); - else if (data->flags & MMC_DATA_WRITE) - cmdr |= AT91_MCI_TRCMD_START; - - if (cmd->opcode == SD_IO_RW_EXTENDED) { - cmdr |= AT91_MCI_TRTYP_SDIO_BLOCK; - } else { - if (data->flags & MMC_DATA_STREAM) - cmdr |= AT91_MCI_TRTYP_STREAM; - if (data->blocks > 1) - cmdr |= AT91_MCI_TRTYP_MULTIPLE; - } - } - else { - block_length = 0; - blocks = 0; - } - - if (host->flags & FL_SENT_STOP) - cmdr |= AT91_MCI_TRCMD_STOP; - - if (host->bus_mode == MMC_BUSMODE_OPENDRAIN) - cmdr |= AT91_MCI_OPDCMD; - - /* - * Set the arguments and send the command - */ - pr_debug("Sending command %d as %08X, arg = %08X, blocks = %d, length = %d (MR = %08X)\n", - cmd->opcode, cmdr, cmd->arg, blocks, block_length, at91_mci_read(host, AT91_MCI_MR)); - - if (!data) { - at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_TXTDIS | ATMEL_PDC_RXTDIS); - at91_mci_write(host, ATMEL_PDC_RPR, 0); - at91_mci_write(host, ATMEL_PDC_RCR, 0); - at91_mci_write(host, ATMEL_PDC_RNPR, 0); - at91_mci_write(host, ATMEL_PDC_RNCR, 0); - at91_mci_write(host, ATMEL_PDC_TPR, 0); - at91_mci_write(host, ATMEL_PDC_TCR, 0); - at91_mci_write(host, ATMEL_PDC_TNPR, 0); - at91_mci_write(host, ATMEL_PDC_TNCR, 0); - ier = AT91_MCI_CMDRDY; - } else { - /* zero block length and PDC mode */ - mr = at91_mci_read(host, AT91_MCI_MR) & 0x5fff; - mr |= (data->blksz & 0x3) ? AT91_MCI_PDCFBYTE : 0; - mr |= (block_length << 16); - mr |= AT91_MCI_PDCMODE; - at91_mci_write(host, AT91_MCI_MR, mr); - - if (!(cpu_is_at91rm9200() || cpu_is_at91sam9261())) - at91_mci_write(host, AT91_MCI_BLKR, - AT91_MCI_BLKR_BCNT(blocks) | - AT91_MCI_BLKR_BLKLEN(block_length)); - - /* - * Disable the PDC controller - */ - at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS | ATMEL_PDC_TXTDIS); - - if (cmdr & AT91_MCI_TRCMD_START) { - data->bytes_xfered = 0; - host->transfer_index = 0; - host->in_use_index = 0; - if (cmdr & AT91_MCI_TRDIR) { - /* - * Handle a read - */ - host->total_length = 0; - - at91_mci_write(host, ATMEL_PDC_RPR, host->physical_address); - at91_mci_write(host, ATMEL_PDC_RCR, (data->blksz & 0x3) ? - (blocks * block_length) : (blocks * block_length) / 4); - at91_mci_write(host, ATMEL_PDC_RNPR, 0); - at91_mci_write(host, ATMEL_PDC_RNCR, 0); - - ier = AT91_MCI_ENDRX /* | AT91_MCI_RXBUFF */; - } - else { - /* - * Handle a write - */ - host->total_length = block_length * blocks; - /* - * MCI1 rev2xx Data Write Operation and - * number of bytes erratum - */ - if (at91mci_is_mci1rev2xx()) - if (host->total_length < 12) - host->total_length = 12; - - at91_mci_sg_to_dma(host, data); - - pr_debug("Transmitting %d bytes\n", host->total_length); - - at91_mci_write(host, ATMEL_PDC_TPR, host->physical_address); - at91_mci_write(host, ATMEL_PDC_TCR, (data->blksz & 0x3) ? - host->total_length : host->total_length / 4); - - ier = AT91_MCI_CMDRDY; - } - } - } - - /* - * Send the command and then enable the PDC - not the other way round as - * the data sheet says - */ - - at91_mci_write(host, AT91_MCI_ARGR, cmd->arg); - at91_mci_write(host, AT91_MCI_CMDR, cmdr); - - if (cmdr & AT91_MCI_TRCMD_START) { - if (cmdr & AT91_MCI_TRDIR) - at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTEN); - } - - /* Enable selected interrupts */ - at91_mci_write(host, AT91_MCI_IER, AT91_MCI_ERRORS | ier); -} - -/* - * Process the next step in the request - */ -static void at91_mci_process_next(struct at91mci_host *host) -{ - if (!(host->flags & FL_SENT_COMMAND)) { - host->flags |= FL_SENT_COMMAND; - at91_mci_send_command(host, host->request->cmd); - } - else if ((!(host->flags & FL_SENT_STOP)) && host->request->stop) { - host->flags |= FL_SENT_STOP; - at91_mci_send_command(host, host->request->stop); - } else { - del_timer(&host->timer); - /* the at91rm9200 mci controller hangs after some transfers, - * and the workaround is to reset it after each transfer. - */ - if (cpu_is_at91rm9200()) - at91_reset_host(host); - mmc_request_done(host->mmc, host->request); - } -} - -/* - * Handle a command that has been completed - */ -static void at91_mci_completed_command(struct at91mci_host *host, unsigned int status) -{ - struct mmc_command *cmd = host->cmd; - struct mmc_data *data = cmd->data; - - at91_mci_write(host, AT91_MCI_IDR, 0xffffffff & ~(AT91_MCI_SDIOIRQA | AT91_MCI_SDIOIRQB)); - - cmd->resp[0] = at91_mci_read(host, AT91_MCI_RSPR(0)); - cmd->resp[1] = at91_mci_read(host, AT91_MCI_RSPR(1)); - cmd->resp[2] = at91_mci_read(host, AT91_MCI_RSPR(2)); - cmd->resp[3] = at91_mci_read(host, AT91_MCI_RSPR(3)); - - pr_debug("Status = %08X/%08x [%08X %08X %08X %08X]\n", - status, at91_mci_read(host, AT91_MCI_SR), - cmd->resp[0], cmd->resp[1], cmd->resp[2], cmd->resp[3]); - - if (status & AT91_MCI_ERRORS) { - if ((status & AT91_MCI_RCRCE) && !(mmc_resp_type(cmd) & MMC_RSP_CRC)) { - cmd->error = 0; - } - else { - if (status & (AT91_MCI_DTOE | AT91_MCI_DCRCE)) { - if (data) { - if (status & AT91_MCI_DTOE) - data->error = -ETIMEDOUT; - else if (status & AT91_MCI_DCRCE) - data->error = -EILSEQ; - } - } else { - if (status & AT91_MCI_RTOE) - cmd->error = -ETIMEDOUT; - else if (status & AT91_MCI_RCRCE) - cmd->error = -EILSEQ; - else - cmd->error = -EIO; - } - - pr_debug("Error detected and set to %d/%d (cmd = %d, retries = %d)\n", - cmd->error, data ? data->error : 0, - cmd->opcode, cmd->retries); - } - } - else - cmd->error = 0; - - at91_mci_process_next(host); -} - -/* - * Handle an MMC request - */ -static void at91_mci_request(struct mmc_host *mmc, struct mmc_request *mrq) -{ - struct at91mci_host *host = mmc_priv(mmc); - host->request = mrq; - host->flags = 0; - - /* more than 1s timeout needed with slow SD cards */ - mod_timer(&host->timer, jiffies + msecs_to_jiffies(2000)); - - at91_mci_process_next(host); -} - -/* - * Set the IOS - */ -static void at91_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) -{ - int clkdiv; - struct at91mci_host *host = mmc_priv(mmc); - unsigned long at91_master_clock = clk_get_rate(host->mci_clk); - - host->bus_mode = ios->bus_mode; - - if (ios->clock == 0) { - /* Disable the MCI controller */ - at91_mci_write(host, AT91_MCI_CR, AT91_MCI_MCIDIS); - clkdiv = 0; - } - else { - /* Enable the MCI controller */ - at91_mci_write(host, AT91_MCI_CR, AT91_MCI_MCIEN); - - if ((at91_master_clock % (ios->clock * 2)) == 0) - clkdiv = ((at91_master_clock / ios->clock) / 2) - 1; - else - clkdiv = (at91_master_clock / ios->clock) / 2; - - pr_debug("clkdiv = %d. mcck = %ld\n", clkdiv, - at91_master_clock / (2 * (clkdiv + 1))); - } - if (ios->bus_width == MMC_BUS_WIDTH_4 && host->board->wire4) { - pr_debug("MMC: Setting controller bus width to 4\n"); - at91_mci_write(host, AT91_MCI_SDCR, at91_mci_read(host, AT91_MCI_SDCR) | AT91_MCI_SDCBUS); - } - else { - pr_debug("MMC: Setting controller bus width to 1\n"); - at91_mci_write(host, AT91_MCI_SDCR, at91_mci_read(host, AT91_MCI_SDCR) & ~AT91_MCI_SDCBUS); - } - - /* Set the clock divider */ - at91_mci_write(host, AT91_MCI_MR, (at91_mci_read(host, AT91_MCI_MR) & ~AT91_MCI_CLKDIV) | clkdiv); - - /* maybe switch power to the card */ - if (gpio_is_valid(host->board->vcc_pin)) { - switch (ios->power_mode) { - case MMC_POWER_OFF: - gpio_set_value(host->board->vcc_pin, 0); - break; - case MMC_POWER_UP: - gpio_set_value(host->board->vcc_pin, 1); - break; - case MMC_POWER_ON: - break; - default: - WARN_ON(1); - } - } -} - -/* - * Handle an interrupt - */ -static irqreturn_t at91_mci_irq(int irq, void *devid) -{ - struct at91mci_host *host = devid; - int completed = 0; - unsigned int int_status, int_mask; - - int_status = at91_mci_read(host, AT91_MCI_SR); - int_mask = at91_mci_read(host, AT91_MCI_IMR); - - pr_debug("MCI irq: status = %08X, %08X, %08X\n", int_status, int_mask, - int_status & int_mask); - - int_status = int_status & int_mask; - - if (int_status & AT91_MCI_ERRORS) { - completed = 1; - - if (int_status & AT91_MCI_UNRE) - pr_debug("MMC: Underrun error\n"); - if (int_status & AT91_MCI_OVRE) - pr_debug("MMC: Overrun error\n"); - if (int_status & AT91_MCI_DTOE) - pr_debug("MMC: Data timeout\n"); - if (int_status & AT91_MCI_DCRCE) - pr_debug("MMC: CRC error in data\n"); - if (int_status & AT91_MCI_RTOE) - pr_debug("MMC: Response timeout\n"); - if (int_status & AT91_MCI_RENDE) - pr_debug("MMC: Response end bit error\n"); - if (int_status & AT91_MCI_RCRCE) - pr_debug("MMC: Response CRC error\n"); - if (int_status & AT91_MCI_RDIRE) - pr_debug("MMC: Response direction error\n"); - if (int_status & AT91_MCI_RINDE) - pr_debug("MMC: Response index error\n"); - } else { - /* Only continue processing if no errors */ - - if (int_status & AT91_MCI_TXBUFE) { - pr_debug("TX buffer empty\n"); - at91_mci_handle_transmitted(host); - } - - if (int_status & AT91_MCI_ENDRX) { - pr_debug("ENDRX\n"); - at91_mci_post_dma_read(host); - } - - if (int_status & AT91_MCI_RXBUFF) { - pr_debug("RX buffer full\n"); - at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS | ATMEL_PDC_TXTDIS); - at91_mci_write(host, AT91_MCI_IDR, AT91_MCI_RXBUFF | AT91_MCI_ENDRX); - completed = 1; - } - - if (int_status & AT91_MCI_ENDTX) - pr_debug("Transmit has ended\n"); - - if (int_status & AT91_MCI_NOTBUSY) { - pr_debug("Card is ready\n"); - at91_mci_update_bytes_xfered(host); - completed = 1; - } - - if (int_status & AT91_MCI_DTIP) - pr_debug("Data transfer in progress\n"); - - if (int_status & AT91_MCI_BLKE) { - pr_debug("Block transfer has ended\n"); - if (host->request->data && host->request->data->blocks > 1) { - /* multi block write : complete multi write - * command and send stop */ - completed = 1; - } else { - at91_mci_write(host, AT91_MCI_IER, AT91_MCI_NOTBUSY); - } - } - - if (int_status & AT91_MCI_SDIOIRQA) - mmc_signal_sdio_irq(host->mmc); - - if (int_status & AT91_MCI_SDIOIRQB) - mmc_signal_sdio_irq(host->mmc); - - if (int_status & AT91_MCI_TXRDY) - pr_debug("Ready to transmit\n"); - - if (int_status & AT91_MCI_RXRDY) - pr_debug("Ready to receive\n"); - - if (int_status & AT91_MCI_CMDRDY) { - pr_debug("Command ready\n"); - completed = at91_mci_handle_cmdrdy(host); - } - } - - if (completed) { - pr_debug("Completed command\n"); - at91_mci_write(host, AT91_MCI_IDR, 0xffffffff & ~(AT91_MCI_SDIOIRQA | AT91_MCI_SDIOIRQB)); - at91_mci_completed_command(host, int_status); - } else - at91_mci_write(host, AT91_MCI_IDR, int_status & ~(AT91_MCI_SDIOIRQA | AT91_MCI_SDIOIRQB)); - - return IRQ_HANDLED; -} - -static irqreturn_t at91_mmc_det_irq(int irq, void *_host) -{ - struct at91mci_host *host = _host; - int present; - - /* entering this ISR means that we have configured det_pin: - * we can use its value in board structure */ - present = !gpio_get_value(host->board->det_pin); - - /* - * we expect this irq on both insert and remove, - * and use a short delay to debounce. - */ - if (present != host->present) { - host->present = present; - pr_debug("%s: card %s\n", mmc_hostname(host->mmc), - present ? "insert" : "remove"); - if (!present) { - pr_debug("****** Resetting SD-card bus width ******\n"); - at91_mci_write(host, AT91_MCI_SDCR, at91_mci_read(host, AT91_MCI_SDCR) & ~AT91_MCI_SDCBUS); - } - /* 0.5s needed because of early card detect switch firing */ - mmc_detect_change(host->mmc, msecs_to_jiffies(500)); - } - return IRQ_HANDLED; -} - -static int at91_mci_get_ro(struct mmc_host *mmc) -{ - struct at91mci_host *host = mmc_priv(mmc); - - if (gpio_is_valid(host->board->wp_pin)) - return !!gpio_get_value(host->board->wp_pin); - /* - * Board doesn't support read only detection; let the mmc core - * decide what to do. - */ - return -ENOSYS; -} - -static void at91_mci_enable_sdio_irq(struct mmc_host *mmc, int enable) -{ - struct at91mci_host *host = mmc_priv(mmc); - - pr_debug("%s: sdio_irq %c : %s\n", mmc_hostname(host->mmc), - host->board->slot_b ? 'B':'A', enable ? "enable" : "disable"); - at91_mci_write(host, enable ? AT91_MCI_IER : AT91_MCI_IDR, - host->board->slot_b ? AT91_MCI_SDIOIRQB : AT91_MCI_SDIOIRQA); - -} - -static const struct mmc_host_ops at91_mci_ops = { - .request = at91_mci_request, - .set_ios = at91_mci_set_ios, - .get_ro = at91_mci_get_ro, - .enable_sdio_irq = at91_mci_enable_sdio_irq, -}; - -/* - * Probe for the device - */ -static int __init at91_mci_probe(struct platform_device *pdev) -{ - struct mmc_host *mmc; - struct at91mci_host *host; - struct resource *res; - int ret; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) - return -ENXIO; - - if (!request_mem_region(res->start, resource_size(res), DRIVER_NAME)) - return -EBUSY; - - mmc = mmc_alloc_host(sizeof(struct at91mci_host), &pdev->dev); - if (!mmc) { - ret = -ENOMEM; - dev_dbg(&pdev->dev, "couldn't allocate mmc host\n"); - goto fail6; - } - - mmc->ops = &at91_mci_ops; - mmc->f_min = 375000; - mmc->f_max = 25000000; - mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; - mmc->caps = 0; - - mmc->max_blk_size = MCI_MAXBLKSIZE; - mmc->max_blk_count = MCI_BLKATONCE; - mmc->max_req_size = MCI_BUFSIZE; - mmc->max_segs = MCI_BLKATONCE; - mmc->max_seg_size = MCI_BUFSIZE; - - host = mmc_priv(mmc); - host->mmc = mmc; - host->bus_mode = 0; - host->board = pdev->dev.platform_data; - if (host->board->wire4) { - if (at91mci_is_mci1rev2xx()) - mmc->caps |= MMC_CAP_4_BIT_DATA; - else - dev_warn(&pdev->dev, "4 wire bus mode not supported" - " - using 1 wire\n"); - } - - host->buffer = dma_alloc_coherent(&pdev->dev, MCI_BUFSIZE, - &host->physical_address, GFP_KERNEL); - if (!host->buffer) { - ret = -ENOMEM; - dev_err(&pdev->dev, "Can't allocate transmit buffer\n"); - goto fail5; - } - - /* Add SDIO capability when available */ - if (at91mci_is_mci1rev2xx()) { - /* at91mci MCI1 rev2xx sdio interrupt erratum */ - if (host->board->wire4 || !host->board->slot_b) - mmc->caps |= MMC_CAP_SDIO_IRQ; - } - - /* - * Reserve GPIOs ... board init code makes sure these pins are set - * up as GPIOs with the right direction (input, except for vcc) - */ - if (gpio_is_valid(host->board->det_pin)) { - ret = gpio_request(host->board->det_pin, "mmc_detect"); - if (ret < 0) { - dev_dbg(&pdev->dev, "couldn't claim card detect pin\n"); - goto fail4b; - } - } - if (gpio_is_valid(host->board->wp_pin)) { - ret = gpio_request(host->board->wp_pin, "mmc_wp"); - if (ret < 0) { - dev_dbg(&pdev->dev, "couldn't claim wp sense pin\n"); - goto fail4; - } - } - if (gpio_is_valid(host->board->vcc_pin)) { - ret = gpio_request(host->board->vcc_pin, "mmc_vcc"); - if (ret < 0) { - dev_dbg(&pdev->dev, "couldn't claim vcc switch pin\n"); - goto fail3; - } - } - - /* - * Get Clock - */ - host->mci_clk = clk_get(&pdev->dev, "mci_clk"); - if (IS_ERR(host->mci_clk)) { - ret = -ENODEV; - dev_dbg(&pdev->dev, "no mci_clk?\n"); - goto fail2; - } - - /* - * Map I/O region - */ - host->baseaddr = ioremap(res->start, resource_size(res)); - if (!host->baseaddr) { - ret = -ENOMEM; - goto fail1; - } - - /* - * Reset hardware - */ - clk_enable(host->mci_clk); /* Enable the peripheral clock */ - at91_mci_disable(host); - at91_mci_enable(host); - - /* - * Allocate the MCI interrupt - */ - host->irq = platform_get_irq(pdev, 0); - ret = request_irq(host->irq, at91_mci_irq, IRQF_SHARED, - mmc_hostname(mmc), host); - if (ret) { - dev_dbg(&pdev->dev, "request MCI interrupt failed\n"); - goto fail0; - } - - setup_timer(&host->timer, at91_timeout_timer, (unsigned long)host); - - platform_set_drvdata(pdev, mmc); - - /* - * Add host to MMC layer - */ - if (gpio_is_valid(host->board->det_pin)) { - host->present = !gpio_get_value(host->board->det_pin); - } - else - host->present = -1; - - mmc_add_host(mmc); - - /* - * monitor card insertion/removal if we can - */ - if (gpio_is_valid(host->board->det_pin)) { - ret = request_irq(gpio_to_irq(host->board->det_pin), - at91_mmc_det_irq, 0, mmc_hostname(mmc), host); - if (ret) - dev_warn(&pdev->dev, "request MMC detect irq failed\n"); - else - device_init_wakeup(&pdev->dev, 1); - } - - pr_debug("Added MCI driver\n"); - - return 0; - -fail0: - clk_disable(host->mci_clk); - iounmap(host->baseaddr); -fail1: - clk_put(host->mci_clk); -fail2: - if (gpio_is_valid(host->board->vcc_pin)) - gpio_free(host->board->vcc_pin); -fail3: - if (gpio_is_valid(host->board->wp_pin)) - gpio_free(host->board->wp_pin); -fail4: - if (gpio_is_valid(host->board->det_pin)) - gpio_free(host->board->det_pin); -fail4b: - if (host->buffer) - dma_free_coherent(&pdev->dev, MCI_BUFSIZE, - host->buffer, host->physical_address); -fail5: - mmc_free_host(mmc); -fail6: - release_mem_region(res->start, resource_size(res)); - dev_err(&pdev->dev, "probe failed, err %d\n", ret); - return ret; -} - -/* - * Remove a device - */ -static int __exit at91_mci_remove(struct platform_device *pdev) -{ - struct mmc_host *mmc = platform_get_drvdata(pdev); - struct at91mci_host *host; - struct resource *res; - - if (!mmc) - return -1; - - host = mmc_priv(mmc); - - if (host->buffer) - dma_free_coherent(&pdev->dev, MCI_BUFSIZE, - host->buffer, host->physical_address); - - if (gpio_is_valid(host->board->det_pin)) { - if (device_can_wakeup(&pdev->dev)) - free_irq(gpio_to_irq(host->board->det_pin), host); - device_init_wakeup(&pdev->dev, 0); - gpio_free(host->board->det_pin); - } - - at91_mci_disable(host); - del_timer_sync(&host->timer); - mmc_remove_host(mmc); - free_irq(host->irq, host); - - clk_disable(host->mci_clk); /* Disable the peripheral clock */ - clk_put(host->mci_clk); - - if (gpio_is_valid(host->board->vcc_pin)) - gpio_free(host->board->vcc_pin); - if (gpio_is_valid(host->board->wp_pin)) - gpio_free(host->board->wp_pin); - - iounmap(host->baseaddr); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(res->start, resource_size(res)); - - mmc_free_host(mmc); - platform_set_drvdata(pdev, NULL); - pr_debug("MCI Removed\n"); - - return 0; -} - -#ifdef CONFIG_PM -static int at91_mci_suspend(struct platform_device *pdev, pm_message_t state) -{ - struct mmc_host *mmc = platform_get_drvdata(pdev); - struct at91mci_host *host = mmc_priv(mmc); - int ret = 0; - - if (gpio_is_valid(host->board->det_pin) && device_may_wakeup(&pdev->dev)) - enable_irq_wake(host->board->det_pin); - - if (mmc) - ret = mmc_suspend_host(mmc); - - return ret; -} - -static int at91_mci_resume(struct platform_device *pdev) -{ - struct mmc_host *mmc = platform_get_drvdata(pdev); - struct at91mci_host *host = mmc_priv(mmc); - int ret = 0; - - if (gpio_is_valid(host->board->det_pin) && device_may_wakeup(&pdev->dev)) - disable_irq_wake(host->board->det_pin); - - if (mmc) - ret = mmc_resume_host(mmc); - - return ret; -} -#else -#define at91_mci_suspend NULL -#define at91_mci_resume NULL -#endif - -static struct platform_driver at91_mci_driver = { - .remove = __exit_p(at91_mci_remove), - .suspend = at91_mci_suspend, - .resume = at91_mci_resume, - .driver = { - .name = DRIVER_NAME, - .owner = THIS_MODULE, - }, -}; - -static int __init at91_mci_init(void) -{ - return platform_driver_probe(&at91_mci_driver, at91_mci_probe); -} - -static void __exit at91_mci_exit(void) -{ - platform_driver_unregister(&at91_mci_driver); -} - -module_init(at91_mci_init); -module_exit(at91_mci_exit); - -MODULE_DESCRIPTION("AT91 Multimedia Card Interface driver"); -MODULE_AUTHOR("Nick Randell"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:at91_mci"); diff --git a/drivers/mmc/host/at91_mci.h b/drivers/mmc/host/at91_mci.h deleted file mode 100644 index eec3a6b1c2bc..000000000000 --- a/drivers/mmc/host/at91_mci.h +++ /dev/null @@ -1,115 +0,0 @@ -/* - * drivers/mmc/host/at91_mci.h - * - * Copyright (C) 2005 Ivan Kokshaysky - * Copyright (C) SAN People - * - * MultiMedia Card Interface (MCI) registers. - * Based on AT91RM9200 datasheet revision F. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#ifndef AT91_MCI_H -#define AT91_MCI_H - -#define AT91_MCI_CR 0x00 /* Control Register */ -#define AT91_MCI_MCIEN (1 << 0) /* Multi-Media Interface Enable */ -#define AT91_MCI_MCIDIS (1 << 1) /* Multi-Media Interface Disable */ -#define AT91_MCI_PWSEN (1 << 2) /* Power Save Mode Enable */ -#define AT91_MCI_PWSDIS (1 << 3) /* Power Save Mode Disable */ -#define AT91_MCI_SWRST (1 << 7) /* Software Reset */ - -#define AT91_MCI_MR 0x04 /* Mode Register */ -#define AT91_MCI_CLKDIV (0xff << 0) /* Clock Divider */ -#define AT91_MCI_PWSDIV (7 << 8) /* Power Saving Divider */ -#define AT91_MCI_RDPROOF (1 << 11) /* Read Proof Enable [SAM926[03] only] */ -#define AT91_MCI_WRPROOF (1 << 12) /* Write Proof Enable [SAM926[03] only] */ -#define AT91_MCI_PDCFBYTE (1 << 13) /* PDC Force Byte Transfer [SAM926[03] only] */ -#define AT91_MCI_PDCPADV (1 << 14) /* PDC Padding Value */ -#define AT91_MCI_PDCMODE (1 << 15) /* PDC-orientated Mode */ -#define AT91_MCI_BLKLEN (0xfff << 18) /* Data Block Length */ - -#define AT91_MCI_DTOR 0x08 /* Data Timeout Register */ -#define AT91_MCI_DTOCYC (0xf << 0) /* Data Timeout Cycle Number */ -#define AT91_MCI_DTOMUL (7 << 4) /* Data Timeout Multiplier */ -#define AT91_MCI_DTOMUL_1 (0 << 4) -#define AT91_MCI_DTOMUL_16 (1 << 4) -#define AT91_MCI_DTOMUL_128 (2 << 4) -#define AT91_MCI_DTOMUL_256 (3 << 4) -#define AT91_MCI_DTOMUL_1K (4 << 4) -#define AT91_MCI_DTOMUL_4K (5 << 4) -#define AT91_MCI_DTOMUL_64K (6 << 4) -#define AT91_MCI_DTOMUL_1M (7 << 4) - -#define AT91_MCI_SDCR 0x0c /* SD Card Register */ -#define AT91_MCI_SDCSEL (3 << 0) /* SD Card Selector */ -#define AT91_MCI_SDCBUS (1 << 7) /* 1-bit or 4-bit bus */ - -#define AT91_MCI_ARGR 0x10 /* Argument Register */ - -#define AT91_MCI_CMDR 0x14 /* Command Register */ -#define AT91_MCI_CMDNB (0x3f << 0) /* Command Number */ -#define AT91_MCI_RSPTYP (3 << 6) /* Response Type */ -#define AT91_MCI_RSPTYP_NONE (0 << 6) -#define AT91_MCI_RSPTYP_48 (1 << 6) -#define AT91_MCI_RSPTYP_136 (2 << 6) -#define AT91_MCI_SPCMD (7 << 8) /* Special Command */ -#define AT91_MCI_SPCMD_NONE (0 << 8) -#define AT91_MCI_SPCMD_INIT (1 << 8) -#define AT91_MCI_SPCMD_SYNC (2 << 8) -#define AT91_MCI_SPCMD_ICMD (4 << 8) -#define AT91_MCI_SPCMD_IRESP (5 << 8) -#define AT91_MCI_OPDCMD (1 << 11) /* Open Drain Command */ -#define AT91_MCI_MAXLAT (1 << 12) /* Max Latency for Command to Response */ -#define AT91_MCI_TRCMD (3 << 16) /* Transfer Command */ -#define AT91_MCI_TRCMD_NONE (0 << 16) -#define AT91_MCI_TRCMD_START (1 << 16) -#define AT91_MCI_TRCMD_STOP (2 << 16) -#define AT91_MCI_TRDIR (1 << 18) /* Transfer Direction */ -#define AT91_MCI_TRTYP (3 << 19) /* Transfer Type */ -#define AT91_MCI_TRTYP_BLOCK (0 << 19) -#define AT91_MCI_TRTYP_MULTIPLE (1 << 19) -#define AT91_MCI_TRTYP_STREAM (2 << 19) -#define AT91_MCI_TRTYP_SDIO_BYTE (4 << 19) -#define AT91_MCI_TRTYP_SDIO_BLOCK (5 << 19) - -#define AT91_MCI_BLKR 0x18 /* Block Register */ -#define AT91_MCI_BLKR_BCNT(n) ((0xffff & (n)) << 0) /* Block count */ -#define AT91_MCI_BLKR_BLKLEN(n) ((0xffff & (n)) << 16) /* Block length */ - -#define AT91_MCI_RSPR(n) (0x20 + ((n) * 4)) /* Response Registers 0-3 */ -#define AT91_MCR_RDR 0x30 /* Receive Data Register */ -#define AT91_MCR_TDR 0x34 /* Transmit Data Register */ - -#define AT91_MCI_SR 0x40 /* Status Register */ -#define AT91_MCI_CMDRDY (1 << 0) /* Command Ready */ -#define AT91_MCI_RXRDY (1 << 1) /* Receiver Ready */ -#define AT91_MCI_TXRDY (1 << 2) /* Transmit Ready */ -#define AT91_MCI_BLKE (1 << 3) /* Data Block Ended */ -#define AT91_MCI_DTIP (1 << 4) /* Data Transfer in Progress */ -#define AT91_MCI_NOTBUSY (1 << 5) /* Data Not Busy */ -#define AT91_MCI_ENDRX (1 << 6) /* End of RX Buffer */ -#define AT91_MCI_ENDTX (1 << 7) /* End fo TX Buffer */ -#define AT91_MCI_SDIOIRQA (1 << 8) /* SDIO Interrupt for Slot A */ -#define AT91_MCI_SDIOIRQB (1 << 9) /* SDIO Interrupt for Slot B */ -#define AT91_MCI_RXBUFF (1 << 14) /* RX Buffer Full */ -#define AT91_MCI_TXBUFE (1 << 15) /* TX Buffer Empty */ -#define AT91_MCI_RINDE (1 << 16) /* Response Index Error */ -#define AT91_MCI_RDIRE (1 << 17) /* Response Direction Error */ -#define AT91_MCI_RCRCE (1 << 18) /* Response CRC Error */ -#define AT91_MCI_RENDE (1 << 19) /* Response End Bit Error */ -#define AT91_MCI_RTOE (1 << 20) /* Response Time-out Error */ -#define AT91_MCI_DCRCE (1 << 21) /* Data CRC Error */ -#define AT91_MCI_DTOE (1 << 22) /* Data Time-out Error */ -#define AT91_MCI_OVRE (1 << 30) /* Overrun */ -#define AT91_MCI_UNRE (1 << 31) /* Underrun */ - -#define AT91_MCI_IER 0x44 /* Interrupt Enable Register */ -#define AT91_MCI_IDR 0x48 /* Interrupt Disable Register */ -#define AT91_MCI_IMR 0x4c /* Interrupt Mask Register */ - -#endif diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index ddf096e3803f..722af1de7967 100644 --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -28,6 +28,7 @@ #include <linux/slab.h> #include <linux/stat.h> #include <linux/types.h> +#include <linux/platform_data/atmel.h> #include <linux/mmc/host.h> #include <linux/mmc/sdio.h> @@ -40,7 +41,6 @@ #include <asm/unaligned.h> #include <mach/cpu.h> -#include <mach/board.h> #include "atmel-mci-regs.h" @@ -511,7 +511,7 @@ static const struct of_device_id atmci_dt_ids[] = { MODULE_DEVICE_TABLE(of, atmci_dt_ids); -static struct mci_platform_data __devinit* +static struct mci_platform_data* atmci_of_init(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c index dbd0c8a4e98a..127a8fade4da 100644 --- a/drivers/mmc/host/au1xmmc.c +++ b/drivers/mmc/host/au1xmmc.c @@ -943,7 +943,7 @@ static const struct mmc_host_ops au1xmmc_ops = { .enable_sdio_irq = au1xmmc_enable_sdio_irq, }; -static int __devinit au1xmmc_probe(struct platform_device *pdev) +static int au1xmmc_probe(struct platform_device *pdev) { struct mmc_host *mmc; struct au1xmmc_host *host; @@ -1114,7 +1114,7 @@ out0: return ret; } -static int __devexit au1xmmc_remove(struct platform_device *pdev) +static int au1xmmc_remove(struct platform_device *pdev) { struct au1xmmc_host *host = platform_get_drvdata(pdev); diff --git a/drivers/mmc/host/bfin_sdh.c b/drivers/mmc/host/bfin_sdh.c index b9b463eca1ec..fb4348c5b6ac 100644 --- a/drivers/mmc/host/bfin_sdh.c +++ b/drivers/mmc/host/bfin_sdh.c @@ -522,7 +522,7 @@ static void sdh_reset(void) SSYNC(); } -static int __devinit sdh_probe(struct platform_device *pdev) +static int sdh_probe(struct platform_device *pdev) { struct mmc_host *mmc; struct sdh_host *host; @@ -617,7 +617,7 @@ out1: return ret; } -static int __devexit sdh_remove(struct platform_device *pdev) +static int sdh_remove(struct platform_device *pdev) { struct mmc_host *mmc = platform_get_drvdata(pdev); @@ -680,7 +680,7 @@ static int sdh_resume(struct platform_device *dev) static struct platform_driver sdh_driver = { .probe = sdh_probe, - .remove = __devexit_p(sdh_remove), + .remove = sdh_remove, .suspend = sdh_suspend, .resume = sdh_resume, .driver = { diff --git a/drivers/mmc/host/cb710-mmc.c b/drivers/mmc/host/cb710-mmc.c index 83693fd7c6b3..777ca2046b27 100644 --- a/drivers/mmc/host/cb710-mmc.c +++ b/drivers/mmc/host/cb710-mmc.c @@ -690,7 +690,7 @@ static int cb710_mmc_resume(struct platform_device *pdev) #endif /* CONFIG_PM */ -static int __devinit cb710_mmc_init(struct platform_device *pdev) +static int cb710_mmc_init(struct platform_device *pdev) { struct cb710_slot *slot = cb710_pdev_to_slot(pdev); struct cb710_chip *chip = cb710_slot_to_chip(slot); @@ -746,7 +746,7 @@ err_free_mmc: return err; } -static int __devexit cb710_mmc_exit(struct platform_device *pdev) +static int cb710_mmc_exit(struct platform_device *pdev) { struct cb710_slot *slot = cb710_pdev_to_slot(pdev); struct mmc_host *mmc = cb710_slot_to_mmc(slot); @@ -773,7 +773,7 @@ static int __devexit cb710_mmc_exit(struct platform_device *pdev) static struct platform_driver cb710_mmc_driver = { .driver.name = "cb710-mmc", .probe = cb710_mmc_init, - .remove = __devexit_p(cb710_mmc_exit), + .remove = cb710_mmc_exit, #ifdef CONFIG_PM .suspend = cb710_mmc_suspend, .resume = cb710_mmc_resume, diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c index 660bbc528862..72fd0f2c9013 100644 --- a/drivers/mmc/host/dw_mmc-exynos.c +++ b/drivers/mmc/host/dw_mmc-exynos.c @@ -175,16 +175,6 @@ static int dw_mci_exynos_setup_bus(struct dw_mci *host, } } - gpio = of_get_named_gpio(slot_np, "wp-gpios", 0); - if (gpio_is_valid(gpio)) { - if (devm_gpio_request(host->dev, gpio, "dw-mci-wp")) - dev_info(host->dev, "gpio [%d] request failed\n", - gpio); - } else { - dev_info(host->dev, "wp gpio not available"); - host->pdata->quirks |= DW_MCI_QUIRK_NO_WRITE_PROTECT; - } - if (host->pdata->quirks & DW_MCI_QUIRK_BROKEN_CARD_DETECTION) return 0; @@ -208,7 +198,7 @@ static unsigned long exynos5250_dwmmc_caps[4] = { MMC_CAP_CMD23, }; -static struct dw_mci_drv_data exynos5250_drv_data = { +static const struct dw_mci_drv_data exynos5250_drv_data = { .caps = exynos5250_dwmmc_caps, .init = dw_mci_exynos_priv_init, .setup_clock = dw_mci_exynos_setup_clock, @@ -220,14 +210,14 @@ static struct dw_mci_drv_data exynos5250_drv_data = { static const struct of_device_id dw_mci_exynos_match[] = { { .compatible = "samsung,exynos5250-dw-mshc", - .data = (void *)&exynos5250_drv_data, }, + .data = &exynos5250_drv_data, }, {}, }; -MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match); +MODULE_DEVICE_TABLE(of, dw_mci_exynos_match); int dw_mci_exynos_probe(struct platform_device *pdev) { - struct dw_mci_drv_data *drv_data; + const struct dw_mci_drv_data *drv_data; const struct of_device_id *match; match = of_match_node(dw_mci_exynos_match, pdev->dev.of_node); diff --git a/drivers/mmc/host/dw_mmc-pci.c b/drivers/mmc/host/dw_mmc-pci.c index edb37e9135ae..083fcd29c9c6 100644 --- a/drivers/mmc/host/dw_mmc-pci.c +++ b/drivers/mmc/host/dw_mmc-pci.c @@ -37,7 +37,7 @@ static struct dw_mci_board pci_board_data = { .fifo_depth = 32, }; -static int __devinit dw_mci_pci_probe(struct pci_dev *pdev, +static int dw_mci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *entries) { struct dw_mci *host; @@ -85,7 +85,7 @@ err_disable_dev: return ret; } -static void __devexit dw_mci_pci_remove(struct pci_dev *pdev) +static void dw_mci_pci_remove(struct pci_dev *pdev) { struct dw_mci *host = pci_get_drvdata(pdev); diff --git a/drivers/mmc/host/dw_mmc-pltfm.c b/drivers/mmc/host/dw_mmc-pltfm.c index c960ca7ffbe6..41c27b74b003 100644 --- a/drivers/mmc/host/dw_mmc-pltfm.c +++ b/drivers/mmc/host/dw_mmc-pltfm.c @@ -10,6 +10,7 @@ * (at your option) any later version. */ +#include <linux/err.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/io.h> @@ -24,7 +25,7 @@ #include "dw_mmc.h" int dw_mci_pltfm_register(struct platform_device *pdev, - struct dw_mci_drv_data *drv_data) + const struct dw_mci_drv_data *drv_data) { struct dw_mci *host; struct resource *regs; @@ -46,12 +47,12 @@ int dw_mci_pltfm_register(struct platform_device *pdev, host->dev = &pdev->dev; host->irq_flags = 0; host->pdata = pdev->dev.platform_data; - host->regs = devm_request_and_ioremap(&pdev->dev, regs); - if (!host->regs) - return -ENOMEM; + host->regs = devm_ioremap_resource(&pdev->dev, regs); + if (IS_ERR(host->regs)) + return PTR_ERR(host->regs); - if (host->drv_data->init) { - ret = host->drv_data->init(host); + if (drv_data && drv_data->init) { + ret = drv_data->init(host); if (ret) return ret; } @@ -62,12 +63,12 @@ int dw_mci_pltfm_register(struct platform_device *pdev, } EXPORT_SYMBOL_GPL(dw_mci_pltfm_register); -static int __devinit dw_mci_pltfm_probe(struct platform_device *pdev) +static int dw_mci_pltfm_probe(struct platform_device *pdev) { return dw_mci_pltfm_register(pdev, NULL); } -static int __devexit dw_mci_pltfm_remove(struct platform_device *pdev) +static int dw_mci_pltfm_remove(struct platform_device *pdev) { struct dw_mci *host = platform_get_drvdata(pdev); @@ -119,7 +120,8 @@ static const struct of_device_id dw_mci_pltfm_match[] = { MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match); static struct platform_driver dw_mci_pltfm_driver = { - .remove = __exit_p(dw_mci_pltfm_remove), + .probe = dw_mci_pltfm_probe, + .remove = dw_mci_pltfm_remove, .driver = { .name = "dw_mmc", .of_match_table = of_match_ptr(dw_mci_pltfm_match), @@ -127,18 +129,7 @@ static struct platform_driver dw_mci_pltfm_driver = { }, }; -static int __init dw_mci_init(void) -{ - return platform_driver_probe(&dw_mci_pltfm_driver, dw_mci_pltfm_probe); -} - -static void __exit dw_mci_exit(void) -{ - platform_driver_unregister(&dw_mci_pltfm_driver); -} - -module_init(dw_mci_init); -module_exit(dw_mci_exit); +module_platform_driver(dw_mci_pltfm_driver); MODULE_DESCRIPTION("DW Multimedia Card Interface driver"); MODULE_AUTHOR("NXP Semiconductor VietNam"); diff --git a/drivers/mmc/host/dw_mmc-pltfm.h b/drivers/mmc/host/dw_mmc-pltfm.h index 301f24541fc2..68e7fd2f6148 100644 --- a/drivers/mmc/host/dw_mmc-pltfm.h +++ b/drivers/mmc/host/dw_mmc-pltfm.h @@ -13,8 +13,8 @@ #define _DW_MMC_PLTFM_H_ extern int dw_mci_pltfm_register(struct platform_device *pdev, - struct dw_mci_drv_data *drv_data); -extern int __devexit dw_mci_pltfm_remove(struct platform_device *pdev); + const struct dw_mci_drv_data *drv_data); +extern int dw_mci_pltfm_remove(struct platform_device *pdev); extern const struct dev_pm_ops dw_mci_pltfm_pmops; #endif /* _DW_MMC_PLTFM_H_ */ diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index c2828f35c3b8..98342213ed21 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -34,6 +34,7 @@ #include <linux/regulator/consumer.h> #include <linux/workqueue.h> #include <linux/of.h> +#include <linux/of_gpio.h> #include "dw_mmc.h" @@ -74,6 +75,8 @@ struct idmac_desc { * struct dw_mci_slot - MMC slot state * @mmc: The mmc_host representing this slot. * @host: The MMC controller this slot is using. + * @quirks: Slot-level quirks (DW_MCI_SLOT_QUIRK_XXX) + * @wp_gpio: If gpio_is_valid() we'll use this to read write protect. * @ctype: Card type for this slot. * @mrq: mmc_request currently being processed or waiting to be * processed, or NULL when the slot is idle. @@ -88,6 +91,9 @@ struct dw_mci_slot { struct mmc_host *mmc; struct dw_mci *host; + int quirks; + int wp_gpio; + u32 ctype; struct mmc_request *mrq; @@ -232,6 +238,7 @@ static u32 dw_mci_prepare_command(struct mmc_host *mmc, struct mmc_command *cmd) { struct mmc_data *data; struct dw_mci_slot *slot = mmc_priv(mmc); + const struct dw_mci_drv_data *drv_data = slot->host->drv_data; u32 cmdr; cmd->error = -EINPROGRESS; @@ -261,8 +268,8 @@ static u32 dw_mci_prepare_command(struct mmc_host *mmc, struct mmc_command *cmd) cmdr |= SDMMC_CMD_DAT_WR; } - if (slot->host->drv_data->prepare_command) - slot->host->drv_data->prepare_command(slot->host, &cmdr); + if (drv_data && drv_data->prepare_command) + drv_data->prepare_command(slot->host, &cmdr); return cmdr; } @@ -434,7 +441,7 @@ static int dw_mci_idmac_init(struct dw_mci *host) return 0; } -static struct dw_mci_dma_ops dw_mci_idmac_ops = { +static const struct dw_mci_dma_ops dw_mci_idmac_ops = { .init = dw_mci_idmac_init, .start = dw_mci_idmac_start_dma, .stop = dw_mci_idmac_stop_dma, @@ -616,13 +623,13 @@ static void mci_send_cmd(struct dw_mci_slot *slot, u32 cmd, u32 arg) cmd, arg, cmd_status); } -static void dw_mci_setup_bus(struct dw_mci_slot *slot) +static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit) { struct dw_mci *host = slot->host; u32 div; u32 clk_en_a; - if (slot->clock != host->current_speed) { + if (slot->clock != host->current_speed || force_clkinit) { div = host->bus_hz / slot->clock; if (host->bus_hz % slot->clock && host->bus_hz > slot->clock) /* @@ -682,9 +689,6 @@ static void __dw_mci_start_request(struct dw_mci *host, if (host->pdata->select_slot) host->pdata->select_slot(slot->id); - /* Slot specific timing and width adjustment */ - dw_mci_setup_bus(slot); - host->cur_slot = slot; host->mrq = mrq; @@ -772,21 +776,19 @@ static void dw_mci_request(struct mmc_host *mmc, struct mmc_request *mrq) static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) { struct dw_mci_slot *slot = mmc_priv(mmc); + const struct dw_mci_drv_data *drv_data = slot->host->drv_data; u32 regs; - /* set default 1 bit mode */ - slot->ctype = SDMMC_CTYPE_1BIT; - switch (ios->bus_width) { - case MMC_BUS_WIDTH_1: - slot->ctype = SDMMC_CTYPE_1BIT; - break; case MMC_BUS_WIDTH_4: slot->ctype = SDMMC_CTYPE_4BIT; break; case MMC_BUS_WIDTH_8: slot->ctype = SDMMC_CTYPE_8BIT; break; + default: + /* set default 1 bit mode */ + slot->ctype = SDMMC_CTYPE_1BIT; } regs = mci_readl(slot->host, UHS_REG); @@ -807,8 +809,11 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) slot->clock = ios->clock; } - if (slot->host->drv_data->set_ios) - slot->host->drv_data->set_ios(slot->host, ios); + if (drv_data && drv_data->set_ios) + drv_data->set_ios(slot->host, ios); + + /* Slot specific timing and width adjustment */ + dw_mci_setup_bus(slot, false); switch (ios->power_mode) { case MMC_POWER_UP: @@ -826,10 +831,12 @@ static int dw_mci_get_ro(struct mmc_host *mmc) struct dw_mci_board *brd = slot->host->pdata; /* Use platform get_ro function, else try on board write protect */ - if (brd->quirks & DW_MCI_QUIRK_NO_WRITE_PROTECT) + if (slot->quirks & DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT) read_only = 0; else if (brd->get_ro) read_only = brd->get_ro(slot->id); + else if (gpio_is_valid(slot->wp_gpio)) + read_only = gpio_get_value(slot->wp_gpio); else read_only = mci_readl(slot->host, WRTPRT) & (1 << slot->id) ? 1 : 0; @@ -1446,7 +1453,7 @@ static void dw_mci_read_data_pio(struct dw_mci *host) if (!sg_miter_next(sg_miter)) goto done; - host->sg = sg_miter->__sg; + host->sg = sg_miter->piter.sg; buf = sg_miter->addr; remain = sg_miter->length; offset = 0; @@ -1501,7 +1508,7 @@ static void dw_mci_write_data_pio(struct dw_mci *host) if (!sg_miter_next(sg_miter)) goto done; - host->sg = sg_miter->__sg; + host->sg = sg_miter->piter.sg; buf = sg_miter->addr; remain = sg_miter->length; offset = 0; @@ -1786,6 +1793,30 @@ static struct device_node *dw_mci_of_find_slot_node(struct device *dev, u8 slot) return NULL; } +static struct dw_mci_of_slot_quirks { + char *quirk; + int id; +} of_slot_quirks[] = { + { + .quirk = "disable-wp", + .id = DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT, + }, +}; + +static int dw_mci_of_get_slot_quirks(struct device *dev, u8 slot) +{ + struct device_node *np = dw_mci_of_find_slot_node(dev, slot); + int quirks = 0; + int idx; + + /* get quirks */ + for (idx = 0; idx < ARRAY_SIZE(of_slot_quirks); idx++) + if (of_get_property(np, of_slot_quirks[idx].quirk, NULL)) + quirks |= of_slot_quirks[idx].id; + + return quirks; +} + /* find out bus-width for a given slot */ static u32 dw_mci_of_get_bus_wd(struct device *dev, u8 slot) { @@ -1800,7 +1831,34 @@ static u32 dw_mci_of_get_bus_wd(struct device *dev, u8 slot) " as 1\n"); return bus_wd; } + +/* find the write protect gpio for a given slot; or -1 if none specified */ +static int dw_mci_of_get_wp_gpio(struct device *dev, u8 slot) +{ + struct device_node *np = dw_mci_of_find_slot_node(dev, slot); + int gpio; + + if (!np) + return -EINVAL; + + gpio = of_get_named_gpio(np, "wp-gpios", 0); + + /* Having a missing entry is valid; return silently */ + if (!gpio_is_valid(gpio)) + return -EINVAL; + + if (devm_gpio_request(dev, gpio, "dw-mci-wp")) { + dev_warn(dev, "gpio [%d] request failed\n", gpio); + return -EINVAL; + } + + return gpio; +} #else /* CONFIG_OF */ +static int dw_mci_of_get_slot_quirks(struct device *dev, u8 slot) +{ + return 0; +} static u32 dw_mci_of_get_bus_wd(struct device *dev, u8 slot) { return 1; @@ -1809,12 +1867,17 @@ static struct device_node *dw_mci_of_find_slot_node(struct device *dev, u8 slot) { return NULL; } +static int dw_mci_of_get_wp_gpio(struct device *dev, u8 slot) +{ + return -EINVAL; +} #endif /* CONFIG_OF */ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id) { struct mmc_host *mmc; struct dw_mci_slot *slot; + const struct dw_mci_drv_data *drv_data = host->drv_data; int ctrl_id, ret; u8 bus_width; @@ -1828,6 +1891,8 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id) slot->host = host; host->slot[id] = slot; + slot->quirks = dw_mci_of_get_slot_quirks(host->dev, slot->id); + mmc->ops = &dw_mci_ops; mmc->f_min = DIV_ROUND_UP(host->bus_hz, 510); mmc->f_max = host->bus_hz; @@ -1847,6 +1912,9 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id) if (host->pdata->caps) mmc->caps = host->pdata->caps; + if (host->pdata->pm_caps) + mmc->pm_caps = host->pdata->pm_caps; + if (host->dev->of_node) { ctrl_id = of_alias_get_id(host->dev->of_node, "mshc"); if (ctrl_id < 0) @@ -1854,8 +1922,8 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id) } else { ctrl_id = to_platform_device(host->dev)->id; } - if (host->drv_data && host->drv_data->caps) - mmc->caps |= host->drv_data->caps[ctrl_id]; + if (drv_data && drv_data->caps) + mmc->caps |= drv_data->caps[ctrl_id]; if (host->pdata->caps2) mmc->caps2 = host->pdata->caps2; @@ -1867,10 +1935,10 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id) else bus_width = 1; - if (host->drv_data->setup_bus) { + if (drv_data && drv_data->setup_bus) { struct device_node *slot_np; slot_np = dw_mci_of_find_slot_node(host->dev, slot->id); - ret = host->drv_data->setup_bus(host, slot_np, bus_width); + ret = drv_data->setup_bus(host, slot_np, bus_width); if (ret) goto err_setup_bus; } @@ -1908,7 +1976,7 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id) #endif /* CONFIG_MMC_DW_IDMAC */ } - host->vmmc = regulator_get(mmc_dev(mmc), "vmmc"); + host->vmmc = devm_regulator_get(mmc_dev(mmc), "vmmc"); if (IS_ERR(host->vmmc)) { pr_info("%s: no vmmc regulator found\n", mmc_hostname(mmc)); host->vmmc = NULL; @@ -1920,6 +1988,8 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id) else clear_bit(DW_MMC_CARD_PRESENT, &slot->flags); + slot->wp_gpio = dw_mci_of_get_wp_gpio(host->dev, slot->id); + mmc_add_host(mmc); #if defined(CONFIG_DEBUG_FS) @@ -1957,7 +2027,7 @@ static void dw_mci_cleanup_slot(struct dw_mci_slot *slot, unsigned int id) static void dw_mci_init_dma(struct dw_mci *host) { /* Alloc memory for sg translation */ - host->sg_cpu = dma_alloc_coherent(host->dev, PAGE_SIZE, + host->sg_cpu = dmam_alloc_coherent(host->dev, PAGE_SIZE, &host->sg_dma, GFP_KERNEL); if (!host->sg_cpu) { dev_err(host->dev, "%s: could not alloc DMA memory\n", @@ -1968,7 +2038,7 @@ static void dw_mci_init_dma(struct dw_mci *host) /* Determine which DMA interface to use */ #ifdef CONFIG_MMC_DW_IDMAC host->dma_ops = &dw_mci_idmac_ops; - dev_info(&host->dev, "Using internal DMA controller.\n"); + dev_info(host->dev, "Using internal DMA controller.\n"); #endif if (!host->dma_ops) @@ -2035,6 +2105,7 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host) struct dw_mci_board *pdata; struct device *dev = host->dev; struct device_node *np = dev->of_node; + const struct dw_mci_drv_data *drv_data = host->drv_data; int idx, ret; pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); @@ -2062,12 +2133,18 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host) of_property_read_u32(np, "card-detect-delay", &pdata->detect_delay_ms); - if (host->drv_data->parse_dt) { - ret = host->drv_data->parse_dt(host); + if (drv_data && drv_data->parse_dt) { + ret = drv_data->parse_dt(host); if (ret) return ERR_PTR(ret); } + if (of_find_property(np, "keep-power-in-suspend", NULL)) + pdata->pm_caps |= MMC_PM_KEEP_POWER; + + if (of_find_property(np, "enable-sdio-wakeup", NULL)) + pdata->pm_caps |= MMC_PM_WAKE_SDIO_IRQ; + return pdata; } @@ -2080,6 +2157,7 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host) int dw_mci_probe(struct dw_mci *host) { + const struct dw_mci_drv_data *drv_data = host->drv_data; int width, i, ret = 0; u32 fifo_size; int init_slots = 0; @@ -2098,26 +2176,24 @@ int dw_mci_probe(struct dw_mci *host) return -ENODEV; } - host->biu_clk = clk_get(host->dev, "biu"); + host->biu_clk = devm_clk_get(host->dev, "biu"); if (IS_ERR(host->biu_clk)) { dev_dbg(host->dev, "biu clock not available\n"); } else { ret = clk_prepare_enable(host->biu_clk); if (ret) { dev_err(host->dev, "failed to enable biu clock\n"); - clk_put(host->biu_clk); return ret; } } - host->ciu_clk = clk_get(host->dev, "ciu"); + host->ciu_clk = devm_clk_get(host->dev, "ciu"); if (IS_ERR(host->ciu_clk)) { dev_dbg(host->dev, "ciu clock not available\n"); } else { ret = clk_prepare_enable(host->ciu_clk); if (ret) { dev_err(host->dev, "failed to enable ciu clock\n"); - clk_put(host->ciu_clk); goto err_clk_biu; } } @@ -2127,8 +2203,8 @@ int dw_mci_probe(struct dw_mci *host) else host->bus_hz = clk_get_rate(host->ciu_clk); - if (host->drv_data->setup_clock) { - ret = host->drv_data->setup_clock(host); + if (drv_data && drv_data->setup_clock) { + ret = drv_data->setup_clock(host); if (ret) { dev_err(host->dev, "implementation specific clock setup failed\n"); @@ -2219,7 +2295,8 @@ int dw_mci_probe(struct dw_mci *host) if (!host->card_workqueue) goto err_dmaunmap; INIT_WORK(&host->card_work, dw_mci_work_routine_card); - ret = request_irq(host->irq, dw_mci_interrupt, host->irq_flags, "dw-mci", host); + ret = devm_request_irq(host->dev, host->irq, dw_mci_interrupt, + host->irq_flags, "dw-mci", host); if (ret) goto err_workqueue; @@ -2228,6 +2305,21 @@ int dw_mci_probe(struct dw_mci *host) else host->num_slots = ((mci_readl(host, HCON) >> 1) & 0x1F) + 1; + /* + * Enable interrupts for command done, data over, data empty, card det, + * receive ready and error such as transmit, receive timeout, crc error + */ + mci_writel(host, RINTSTS, 0xFFFFFFFF); + mci_writel(host, INTMASK, SDMMC_INT_CMD_DONE | SDMMC_INT_DATA_OVER | + SDMMC_INT_TXDR | SDMMC_INT_RXDR | + DW_MCI_ERROR_FLAGS | SDMMC_INT_CD); + mci_writel(host, CTRL, SDMMC_CTRL_INT_ENABLE); /* Enable mci interrupt */ + + dev_info(host->dev, "DW MMC controller at irq %d, " + "%d bit host data width, " + "%u deep fifo\n", + host->irq, width, fifo_size); + /* We need at least one slot to succeed */ for (i = 0; i < host->num_slots; i++) { ret = dw_mci_init_slot(host, i); @@ -2242,7 +2334,7 @@ int dw_mci_probe(struct dw_mci *host) } else { dev_dbg(host->dev, "attempted to initialize %d slots, " "but failed on all\n", host->num_slots); - goto err_init_slot; + goto err_workqueue; } /* @@ -2257,52 +2349,29 @@ int dw_mci_probe(struct dw_mci *host) else host->data_offset = DATA_240A_OFFSET; - /* - * Enable interrupts for command done, data over, data empty, card det, - * receive ready and error such as transmit, receive timeout, crc error - */ - mci_writel(host, RINTSTS, 0xFFFFFFFF); - mci_writel(host, INTMASK, SDMMC_INT_CMD_DONE | SDMMC_INT_DATA_OVER | - SDMMC_INT_TXDR | SDMMC_INT_RXDR | - DW_MCI_ERROR_FLAGS | SDMMC_INT_CD); - mci_writel(host, CTRL, SDMMC_CTRL_INT_ENABLE); /* Enable mci interrupt */ - - dev_info(host->dev, "DW MMC controller at irq %d, " - "%d bit host data width, " - "%u deep fifo\n", - host->irq, width, fifo_size); if (host->quirks & DW_MCI_QUIRK_IDMAC_DTO) dev_info(host->dev, "Internal DMAC interrupt fix enabled.\n"); return 0; -err_init_slot: - free_irq(host->irq, host); - err_workqueue: destroy_workqueue(host->card_workqueue); err_dmaunmap: if (host->use_dma && host->dma_ops->exit) host->dma_ops->exit(host); - dma_free_coherent(host->dev, PAGE_SIZE, - host->sg_cpu, host->sg_dma); - if (host->vmmc) { + if (host->vmmc) regulator_disable(host->vmmc); - regulator_put(host->vmmc); - } err_clk_ciu: - if (!IS_ERR(host->ciu_clk)) { + if (!IS_ERR(host->ciu_clk)) clk_disable_unprepare(host->ciu_clk); - clk_put(host->ciu_clk); - } + err_clk_biu: - if (!IS_ERR(host->biu_clk)) { + if (!IS_ERR(host->biu_clk)) clk_disable_unprepare(host->biu_clk); - clk_put(host->biu_clk); - } + return ret; } EXPORT_SYMBOL(dw_mci_probe); @@ -2324,24 +2393,19 @@ void dw_mci_remove(struct dw_mci *host) mci_writel(host, CLKENA, 0); mci_writel(host, CLKSRC, 0); - free_irq(host->irq, host); destroy_workqueue(host->card_workqueue); - dma_free_coherent(host->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma); if (host->use_dma && host->dma_ops->exit) host->dma_ops->exit(host); - if (host->vmmc) { + if (host->vmmc) regulator_disable(host->vmmc); - regulator_put(host->vmmc); - } if (!IS_ERR(host->ciu_clk)) clk_disable_unprepare(host->ciu_clk); + if (!IS_ERR(host->biu_clk)) clk_disable_unprepare(host->biu_clk); - clk_put(host->ciu_clk); - clk_put(host->biu_clk); } EXPORT_SYMBOL(dw_mci_remove); @@ -2405,6 +2469,11 @@ int dw_mci_resume(struct dw_mci *host) struct dw_mci_slot *slot = host->slot[i]; if (!slot) continue; + if (slot->mmc->pm_flags & MMC_PM_KEEP_POWER) { + dw_mci_set_ios(slot->mmc, &slot->mmc->ios); + dw_mci_setup_bus(slot, true); + } + ret = mmc_resume_host(host->slot[i]->mmc); if (ret < 0) return ret; diff --git a/drivers/mmc/host/jz4740_mmc.c b/drivers/mmc/host/jz4740_mmc.c index c8852a8128a9..2391c6b7a4bb 100644 --- a/drivers/mmc/host/jz4740_mmc.c +++ b/drivers/mmc/host/jz4740_mmc.c @@ -702,7 +702,7 @@ static const struct jz_gpio_bulk_request jz4740_mmc_pins[] = { JZ_GPIO_BULK_PIN(MSC_DATA3), }; -static int __devinit jz4740_mmc_request_gpio(struct device *dev, int gpio, +static int jz4740_mmc_request_gpio(struct device *dev, int gpio, const char *name, bool output, int value) { int ret; @@ -724,7 +724,7 @@ static int __devinit jz4740_mmc_request_gpio(struct device *dev, int gpio, return 0; } -static int __devinit jz4740_mmc_request_gpios(struct platform_device *pdev) +static int jz4740_mmc_request_gpios(struct platform_device *pdev) { int ret; struct jz4740_mmc_platform_data *pdata = pdev->dev.platform_data; @@ -759,7 +759,7 @@ err: return ret; } -static int __devinit jz4740_mmc_request_cd_irq(struct platform_device *pdev, +static int jz4740_mmc_request_cd_irq(struct platform_device *pdev, struct jz4740_mmc_host *host) { struct jz4740_mmc_platform_data *pdata = pdev->dev.platform_data; @@ -802,7 +802,7 @@ static inline size_t jz4740_mmc_num_pins(struct jz4740_mmc_host *host) return num_pins; } -static int __devinit jz4740_mmc_probe(struct platform_device* pdev) +static int jz4740_mmc_probe(struct platform_device* pdev) { int ret; struct mmc_host *mmc; @@ -938,7 +938,7 @@ err_free_host: return ret; } -static int __devexit jz4740_mmc_remove(struct platform_device *pdev) +static int jz4740_mmc_remove(struct platform_device *pdev) { struct jz4740_mmc_host *host = platform_get_drvdata(pdev); @@ -1004,7 +1004,7 @@ const struct dev_pm_ops jz4740_mmc_pm_ops = { static struct platform_driver jz4740_mmc_driver = { .probe = jz4740_mmc_probe, - .remove = __devexit_p(jz4740_mmc_remove), + .remove = jz4740_mmc_remove, .driver = { .name = "jz4740-mmc", .owner = THIS_MODULE, diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c index a600eabbd6c3..74145d1d51f5 100644 --- a/drivers/mmc/host/mmc_spi.c +++ b/drivers/mmc/host/mmc_spi.c @@ -1485,7 +1485,7 @@ nomem: } -static int __devexit mmc_spi_remove(struct spi_device *spi) +static int mmc_spi_remove(struct spi_device *spi) { struct mmc_host *mmc = dev_get_drvdata(&spi->dev); struct mmc_spi_host *host; @@ -1517,7 +1517,7 @@ static int __devexit mmc_spi_remove(struct spi_device *spi) return 0; } -static struct of_device_id mmc_spi_of_match_table[] __devinitdata = { +static struct of_device_id mmc_spi_of_match_table[] = { { .compatible = "mmc-spi-slot", }, {}, }; @@ -1529,7 +1529,7 @@ static struct spi_driver mmc_spi_driver = { .of_match_table = mmc_spi_of_match_table, }, .probe = mmc_spi_probe, - .remove = __devexit_p(mmc_spi_remove), + .remove = mmc_spi_remove, }; module_spi_driver(mmc_spi_driver); diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index edc3e9baf0e7..372e921389c8 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -20,6 +20,7 @@ #include <linux/err.h> #include <linux/highmem.h> #include <linux/log2.h> +#include <linux/mmc/pm.h> #include <linux/mmc/host.h> #include <linux/mmc/card.h> #include <linux/amba/bus.h> @@ -33,6 +34,7 @@ #include <linux/amba/mmci.h> #include <linux/pm_runtime.h> #include <linux/types.h> +#include <linux/pinctrl/consumer.h> #include <asm/div64.h> #include <asm/io.h> @@ -58,6 +60,7 @@ static unsigned int fmax = 515633; * @blksz_datactrl16: true if Block size is at b16..b30 position in datactrl register * @pwrreg_powerup: power up value for MMCIPOWER register * @signal_direction: input/out direction of bus signals can be indicated + * @pwrreg_clkgate: MMCIPOWER register must be used to gate the clock */ struct variant_data { unsigned int clkreg; @@ -70,6 +73,7 @@ struct variant_data { bool blksz_datactrl16; u32 pwrreg_powerup; bool signal_direction; + bool pwrreg_clkgate; }; static struct variant_data variant_arm = { @@ -86,6 +90,14 @@ static struct variant_data variant_arm_extended_fifo = { .pwrreg_powerup = MCI_PWR_UP, }; +static struct variant_data variant_arm_extended_fifo_hwfc = { + .fifosize = 128 * 4, + .fifohalfsize = 64 * 4, + .clkreg_enable = MCI_ARM_HWFCEN, + .datalength_bits = 16, + .pwrreg_powerup = MCI_PWR_UP, +}; + static struct variant_data variant_u300 = { .fifosize = 16 * 4, .fifohalfsize = 8 * 4, @@ -94,6 +106,7 @@ static struct variant_data variant_u300 = { .sdio = true, .pwrreg_powerup = MCI_PWR_ON, .signal_direction = true, + .pwrreg_clkgate = true, }; static struct variant_data variant_nomadik = { @@ -105,6 +118,7 @@ static struct variant_data variant_nomadik = { .st_clkdiv = true, .pwrreg_powerup = MCI_PWR_ON, .signal_direction = true, + .pwrreg_clkgate = true, }; static struct variant_data variant_ux500 = { @@ -117,6 +131,7 @@ static struct variant_data variant_ux500 = { .st_clkdiv = true, .pwrreg_powerup = MCI_PWR_ON, .signal_direction = true, + .pwrreg_clkgate = true, }; static struct variant_data variant_ux500v2 = { @@ -130,9 +145,28 @@ static struct variant_data variant_ux500v2 = { .blksz_datactrl16 = true, .pwrreg_powerup = MCI_PWR_ON, .signal_direction = true, + .pwrreg_clkgate = true, }; /* + * Validate mmc prerequisites + */ +static int mmci_validate_data(struct mmci_host *host, + struct mmc_data *data) +{ + if (!data) + return 0; + + if (!is_power_of_2(data->blksz)) { + dev_err(mmc_dev(host->mmc), + "unsupported block size (%d bytes)\n", data->blksz); + return -EINVAL; + } + + return 0; +} + +/* * This must be called with host->lock held */ static void mmci_write_clkreg(struct mmci_host *host, u32 clk) @@ -201,6 +235,9 @@ static void mmci_set_clkreg(struct mmci_host *host, unsigned int desired) if (host->mmc->ios.bus_width == MMC_BUS_WIDTH_8) clk |= MCI_ST_8BIT_BUS; + if (host->mmc->ios.timing == MMC_TIMING_UHS_DDR50) + clk |= MCI_ST_UX500_NEG_EDGE; + mmci_write_clkreg(host, clk); } @@ -261,7 +298,7 @@ static void mmci_init_sg(struct mmci_host *host, struct mmc_data *data) * no custom DMA interfaces are supported. */ #ifdef CONFIG_DMA_ENGINE -static void __devinit mmci_dma_setup(struct mmci_host *host) +static void mmci_dma_setup(struct mmci_host *host) { struct mmci_platform_data *plat = host->plat; const char *rxname, *txname; @@ -337,7 +374,7 @@ static void __devinit mmci_dma_setup(struct mmci_host *host) } /* - * This is used in __devinit or __devexit so inline it + * This is used in or so inline it * so it can be discarded. */ static inline void mmci_dma_release(struct mmci_host *host) @@ -351,10 +388,33 @@ static inline void mmci_dma_release(struct mmci_host *host) host->dma_rx_channel = host->dma_tx_channel = NULL; } +static void mmci_dma_data_error(struct mmci_host *host) +{ + dev_err(mmc_dev(host->mmc), "error during DMA transfer!\n"); + dmaengine_terminate_all(host->dma_current); + host->dma_current = NULL; + host->dma_desc_current = NULL; + host->data->host_cookie = 0; +} + static void mmci_dma_unmap(struct mmci_host *host, struct mmc_data *data) { - struct dma_chan *chan = host->dma_current; + struct dma_chan *chan; enum dma_data_direction dir; + + if (data->flags & MMC_DATA_READ) { + dir = DMA_FROM_DEVICE; + chan = host->dma_rx_channel; + } else { + dir = DMA_TO_DEVICE; + chan = host->dma_tx_channel; + } + + dma_unmap_sg(chan->device->dev, data->sg, data->sg_len, dir); +} + +static void mmci_dma_finalize(struct mmci_host *host, struct mmc_data *data) +{ u32 status; int i; @@ -373,19 +433,13 @@ static void mmci_dma_unmap(struct mmci_host *host, struct mmc_data *data) * contiguous buffers. On TX, we'll get a FIFO underrun error. */ if (status & MCI_RXDATAAVLBLMASK) { - dmaengine_terminate_all(chan); + mmci_dma_data_error(host); if (!data->error) data->error = -EIO; } - if (data->flags & MMC_DATA_WRITE) { - dir = DMA_TO_DEVICE; - } else { - dir = DMA_FROM_DEVICE; - } - if (!data->host_cookie) - dma_unmap_sg(chan->device->dev, data->sg, data->sg_len, dir); + mmci_dma_unmap(host, data); /* * Use of DMA with scatter-gather is impossible. @@ -395,16 +449,15 @@ static void mmci_dma_unmap(struct mmci_host *host, struct mmc_data *data) dev_err(mmc_dev(host->mmc), "buggy DMA detected. Taking evasive action.\n"); mmci_dma_release(host); } -} -static void mmci_dma_data_error(struct mmci_host *host) -{ - dev_err(mmc_dev(host->mmc), "error during DMA transfer!\n"); - dmaengine_terminate_all(host->dma_current); + host->dma_current = NULL; + host->dma_desc_current = NULL; } -static int mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data, - struct mmci_host_next *next) +/* prepares DMA channel and DMA descriptor, returns non-zero on failure */ +static int __mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data, + struct dma_chan **dma_chan, + struct dma_async_tx_descriptor **dma_desc) { struct variant_data *variant = host->variant; struct dma_slave_config conf = { @@ -422,16 +475,6 @@ static int mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data, enum dma_data_direction buffer_dirn; int nr_sg; - /* Check if next job is already prepared */ - if (data->host_cookie && !next && - host->dma_current && host->dma_desc_current) - return 0; - - if (!next) { - host->dma_current = NULL; - host->dma_desc_current = NULL; - } - if (data->flags & MMC_DATA_READ) { conf.direction = DMA_DEV_TO_MEM; buffer_dirn = DMA_FROM_DEVICE; @@ -461,29 +504,41 @@ static int mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data, if (!desc) goto unmap_exit; - if (next) { - next->dma_chan = chan; - next->dma_desc = desc; - } else { - host->dma_current = chan; - host->dma_desc_current = desc; - } + *dma_chan = chan; + *dma_desc = desc; return 0; unmap_exit: - if (!next) - dmaengine_terminate_all(chan); dma_unmap_sg(device->dev, data->sg, data->sg_len, buffer_dirn); return -ENOMEM; } +static inline int mmci_dma_prep_data(struct mmci_host *host, + struct mmc_data *data) +{ + /* Check if next job is already prepared. */ + if (host->dma_current && host->dma_desc_current) + return 0; + + /* No job were prepared thus do it now. */ + return __mmci_dma_prep_data(host, data, &host->dma_current, + &host->dma_desc_current); +} + +static inline int mmci_dma_prep_next(struct mmci_host *host, + struct mmc_data *data) +{ + struct mmci_host_next *nd = &host->next_data; + return __mmci_dma_prep_data(host, data, &nd->dma_chan, &nd->dma_desc); +} + static int mmci_dma_start_data(struct mmci_host *host, unsigned int datactrl) { int ret; struct mmc_data *data = host->data; - ret = mmci_dma_prep_data(host, host->data, NULL); + ret = mmci_dma_prep_data(host, host->data); if (ret) return ret; @@ -513,19 +568,11 @@ static void mmci_get_next_data(struct mmci_host *host, struct mmc_data *data) { struct mmci_host_next *next = &host->next_data; - if (data->host_cookie && data->host_cookie != next->cookie) { - pr_warning("[%s] invalid cookie: data->host_cookie %d" - " host->next_data.cookie %d\n", - __func__, data->host_cookie, host->next_data.cookie); - data->host_cookie = 0; - } - - if (!data->host_cookie) - return; + WARN_ON(data->host_cookie && data->host_cookie != next->cookie); + WARN_ON(!data->host_cookie && (next->dma_desc || next->dma_chan)); host->dma_desc_current = next->dma_desc; host->dma_current = next->dma_chan; - next->dma_desc = NULL; next->dma_chan = NULL; } @@ -540,19 +587,13 @@ static void mmci_pre_request(struct mmc_host *mmc, struct mmc_request *mrq, if (!data) return; - if (data->host_cookie) { - data->host_cookie = 0; + BUG_ON(data->host_cookie); + + if (mmci_validate_data(host, data)) return; - } - /* if config for dma */ - if (((data->flags & MMC_DATA_WRITE) && host->dma_tx_channel) || - ((data->flags & MMC_DATA_READ) && host->dma_rx_channel)) { - if (mmci_dma_prep_data(host, data, nd)) - data->host_cookie = 0; - else - data->host_cookie = ++nd->cookie < 0 ? 1 : nd->cookie; - } + if (!mmci_dma_prep_next(host, data)) + data->host_cookie = ++nd->cookie < 0 ? 1 : nd->cookie; } static void mmci_post_request(struct mmc_host *mmc, struct mmc_request *mrq, @@ -560,29 +601,23 @@ static void mmci_post_request(struct mmc_host *mmc, struct mmc_request *mrq, { struct mmci_host *host = mmc_priv(mmc); struct mmc_data *data = mrq->data; - struct dma_chan *chan; - enum dma_data_direction dir; - if (!data) + if (!data || !data->host_cookie) return; - if (data->flags & MMC_DATA_READ) { - dir = DMA_FROM_DEVICE; - chan = host->dma_rx_channel; - } else { - dir = DMA_TO_DEVICE; - chan = host->dma_tx_channel; - } + mmci_dma_unmap(host, data); + if (err) { + struct mmci_host_next *next = &host->next_data; + struct dma_chan *chan; + if (data->flags & MMC_DATA_READ) + chan = host->dma_rx_channel; + else + chan = host->dma_tx_channel; + dmaengine_terminate_all(chan); - /* if config for dma */ - if (chan) { - if (err) - dmaengine_terminate_all(chan); - if (data->host_cookie) - dma_unmap_sg(mmc_dev(host->mmc), data->sg, - data->sg_len, dir); - mrq->data->host_cookie = 0; + next->dma_desc = NULL; + next->dma_chan = NULL; } } @@ -603,6 +638,11 @@ static inline void mmci_dma_unmap(struct mmci_host *host, struct mmc_data *data) { } +static inline void mmci_dma_finalize(struct mmci_host *host, + struct mmc_data *data) +{ +} + static inline void mmci_dma_data_error(struct mmci_host *host) { } @@ -654,9 +694,34 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data) /* The ST Micro variants has a special bit to enable SDIO */ if (variant->sdio && host->mmc->card) - if (mmc_card_sdio(host->mmc->card)) + if (mmc_card_sdio(host->mmc->card)) { + /* + * The ST Micro variants has a special bit + * to enable SDIO. + */ + u32 clk; + datactrl |= MCI_ST_DPSM_SDIOEN; + /* + * The ST Micro variant for SDIO small write transfers + * needs to have clock H/W flow control disabled, + * otherwise the transfer will not start. The threshold + * depends on the rate of MCLK. + */ + if (data->flags & MMC_DATA_WRITE && + (host->size < 8 || + (host->size <= 8 && host->mclk > 50000000))) + clk = host->clk_reg & ~variant->clkreg_enable; + else + clk = host->clk_reg | variant->clkreg_enable; + + mmci_write_clkreg(host, clk); + } + + if (host->mmc->ios.timing == MMC_TIMING_UHS_DDR50) + datactrl |= MCI_ST_DPSM_DDRMODE; + /* * Attempt to use DMA operation mode, if this * should fail, fall back to PIO mode @@ -728,8 +793,10 @@ mmci_data_irq(struct mmci_host *host, struct mmc_data *data, u32 remain, success; /* Terminate the DMA transfer */ - if (dma_inprogress(host)) + if (dma_inprogress(host)) { mmci_dma_data_error(host); + mmci_dma_unmap(host, data); + } /* * Calculate how far we are into the transfer. Note that @@ -768,7 +835,7 @@ mmci_data_irq(struct mmci_host *host, struct mmc_data *data, if (status & MCI_DATAEND || data->error) { if (dma_inprogress(host)) - mmci_dma_unmap(host, data); + mmci_dma_finalize(host, data); mmci_stop_data(host); if (!data->error) @@ -805,8 +872,10 @@ mmci_cmd_irq(struct mmci_host *host, struct mmc_command *cmd, if (!cmd->data || cmd->error) { if (host->data) { /* Terminate the DMA transfer */ - if (dma_inprogress(host)) + if (dma_inprogress(host)) { mmci_dma_data_error(host); + mmci_dma_unmap(host, host->data); + } mmci_stop_data(host); } mmci_request_end(host, cmd->mrq); @@ -840,14 +909,14 @@ static int mmci_pio_read(struct mmci_host *host, char *buffer, unsigned int rema if (unlikely(count & 0x3)) { if (count < 4) { unsigned char buf[4]; - readsl(base + MMCIFIFO, buf, 1); + ioread32_rep(base + MMCIFIFO, buf, 1); memcpy(ptr, buf, count); } else { - readsl(base + MMCIFIFO, ptr, count >> 2); + ioread32_rep(base + MMCIFIFO, ptr, count >> 2); count &= ~0x3; } } else { - readsl(base + MMCIFIFO, ptr, count >> 2); + ioread32_rep(base + MMCIFIFO, ptr, count >> 2); } ptr += count; @@ -877,22 +946,6 @@ static int mmci_pio_write(struct mmci_host *host, char *buffer, unsigned int rem count = min(remain, maxcnt); /* - * The ST Micro variant for SDIO transfer sizes - * less then 8 bytes should have clock H/W flow - * control disabled. - */ - if (variant->sdio && - mmc_card_sdio(host->mmc->card)) { - u32 clk; - if (count < 8) - clk = host->clk_reg & ~variant->clkreg_enable; - else - clk = host->clk_reg | variant->clkreg_enable; - - mmci_write_clkreg(host, clk); - } - - /* * SDIO especially may want to send something that is * not divisible by 4 (as opposed to card sectors * etc), and the FIFO only accept full 32-bit writes. @@ -900,7 +953,7 @@ static int mmci_pio_write(struct mmci_host *host, char *buffer, unsigned int rem * byte become a 32bit write, 7 bytes will be two * 32bit writes etc. */ - writesl(base + MMCIFIFO, ptr, (count + 3) >> 2); + iowrite32_rep(base + MMCIFIFO, ptr, (count + 3) >> 2); ptr += count; remain -= count; @@ -1048,10 +1101,8 @@ static void mmci_request(struct mmc_host *mmc, struct mmc_request *mrq) WARN_ON(host->mrq != NULL); - if (mrq->data && !is_power_of_2(mrq->data->blksz)) { - dev_err(mmc_dev(mmc), "unsupported block size (%d bytes)\n", - mrq->data->blksz); - mrq->cmd->error = -EINVAL; + mrq->cmd->error = mmci_validate_data(host, mrq->data); + if (mrq->cmd->error) { mmc_request_done(mmc, mrq); return; } @@ -1079,7 +1130,6 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) struct variant_data *variant = host->variant; u32 pwr = 0; unsigned long flags; - int ret; pm_runtime_get_sync(mmc_dev(mmc)); @@ -1089,23 +1139,13 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) switch (ios->power_mode) { case MMC_POWER_OFF: - if (host->vcc) - ret = mmc_regulator_set_ocr(mmc, host->vcc, 0); + if (!IS_ERR(mmc->supply.vmmc)) + mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0); break; case MMC_POWER_UP: - if (host->vcc) { - ret = mmc_regulator_set_ocr(mmc, host->vcc, ios->vdd); - if (ret) { - dev_err(mmc_dev(mmc), "unable to set OCR\n"); - /* - * The .set_ios() function in the mmc_host_ops - * struct return void, and failing to set the - * power should be rare so we print an error - * and return here. - */ - goto out; - } - } + if (!IS_ERR(mmc->supply.vmmc)) + mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, ios->vdd); + /* * The ST Micro variant doesn't have the PL180s MCI_PWR_UP * and instead uses MCI_PWR_ON so apply whatever value is @@ -1147,6 +1187,13 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) } } + /* + * If clock = 0 and the variant requires the MMCIPOWER to be used for + * gating the clock, the MCI_PWR_ON bit is cleared. + */ + if (!ios->clock && variant->pwrreg_clkgate) + pwr &= ~MCI_PWR_ON; + spin_lock_irqsave(&host->lock, flags); mmci_set_clkreg(host, ios->clock); @@ -1154,7 +1201,6 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) spin_unlock_irqrestore(&host->lock, flags); - out: pm_runtime_mark_last_busy(mmc_dev(mmc)); pm_runtime_put_autosuspend(mmc_dev(mmc)); } @@ -1255,7 +1301,7 @@ static void mmci_dt_populate_generic_pdata(struct device_node *np, } #endif -static int __devinit mmci_probe(struct amba_device *dev, +static int mmci_probe(struct amba_device *dev, const struct amba_id *id) { struct mmci_platform_data *plat = dev->dev.platform_data; @@ -1360,32 +1406,36 @@ static int __devinit mmci_probe(struct amba_device *dev, mmc->f_max = min(host->mclk, fmax); dev_dbg(mmc_dev(mmc), "clocking block at %u Hz\n", mmc->f_max); -#ifdef CONFIG_REGULATOR - /* If we're using the regulator framework, try to fetch a regulator */ - host->vcc = regulator_get(&dev->dev, "vmmc"); - if (IS_ERR(host->vcc)) - host->vcc = NULL; - else { - int mask = mmc_regulator_get_ocrmask(host->vcc); - - if (mask < 0) - dev_err(&dev->dev, "error getting OCR mask (%d)\n", - mask); - else { - host->mmc->ocr_avail = (u32) mask; - if (plat->ocr_mask) - dev_warn(&dev->dev, - "Provided ocr_mask/setpower will not be used " - "(using regulator instead)\n"); - } + host->pinctrl = devm_pinctrl_get(&dev->dev); + if (IS_ERR(host->pinctrl)) { + ret = PTR_ERR(host->pinctrl); + goto clk_disable; } -#endif - /* Fall back to platform data if no regulator is found */ - if (host->vcc == NULL) + + host->pins_default = pinctrl_lookup_state(host->pinctrl, + PINCTRL_STATE_DEFAULT); + + /* enable pins to be muxed in and configured */ + if (!IS_ERR(host->pins_default)) { + ret = pinctrl_select_state(host->pinctrl, host->pins_default); + if (ret) + dev_warn(&dev->dev, "could not set default pins\n"); + } else + dev_warn(&dev->dev, "could not get default pinstate\n"); + + /* Get regulators and the supported OCR mask */ + mmc_regulator_get_supply(mmc); + if (!mmc->ocr_avail) mmc->ocr_avail = plat->ocr_mask; + else if (plat->ocr_mask) + dev_warn(mmc_dev(mmc), "Platform OCR mask is ignored\n"); + mmc->caps = plat->capabilities; mmc->caps2 = plat->capabilities2; + /* We support these PM capabilities. */ + mmc->pm_caps = MMC_PM_KEEP_POWER; + /* * We can do SGIO */ @@ -1522,7 +1572,7 @@ static int __devinit mmci_probe(struct amba_device *dev, return ret; } -static int __devexit mmci_remove(struct amba_device *dev) +static int mmci_remove(struct amba_device *dev) { struct mmc_host *mmc = amba_get_drvdata(dev); @@ -1561,10 +1611,6 @@ static int __devexit mmci_remove(struct amba_device *dev) clk_disable_unprepare(host->clk); clk_put(host->clk); - if (host->vcc) - mmc_regulator_set_ocr(mmc, host->vcc, 0); - regulator_put(host->vcc); - mmc_free_host(mmc); amba_release_regions(dev); @@ -1612,8 +1658,37 @@ static int mmci_resume(struct device *dev) } #endif +#ifdef CONFIG_PM_RUNTIME +static int mmci_runtime_suspend(struct device *dev) +{ + struct amba_device *adev = to_amba_device(dev); + struct mmc_host *mmc = amba_get_drvdata(adev); + + if (mmc) { + struct mmci_host *host = mmc_priv(mmc); + clk_disable_unprepare(host->clk); + } + + return 0; +} + +static int mmci_runtime_resume(struct device *dev) +{ + struct amba_device *adev = to_amba_device(dev); + struct mmc_host *mmc = amba_get_drvdata(adev); + + if (mmc) { + struct mmci_host *host = mmc_priv(mmc); + clk_prepare_enable(host->clk); + } + + return 0; +} +#endif + static const struct dev_pm_ops mmci_dev_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(mmci_suspend, mmci_resume) + SET_RUNTIME_PM_OPS(mmci_runtime_suspend, mmci_runtime_resume, NULL) }; static struct amba_id mmci_ids[] = { @@ -1628,6 +1703,11 @@ static struct amba_id mmci_ids[] = { .data = &variant_arm_extended_fifo, }, { + .id = 0x02041180, + .mask = 0xff0fffff, + .data = &variant_arm_extended_fifo_hwfc, + }, + { .id = 0x00041181, .mask = 0x000fffff, .data = &variant_arm, @@ -1669,7 +1749,7 @@ static struct amba_driver mmci_driver = { .pm = &mmci_dev_pm_ops, }, .probe = mmci_probe, - .remove = __devexit_p(mmci_remove), + .remove = mmci_remove, .id_table = mmci_ids, }; diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h index d437ccf62d6b..1f33ad5333a0 100644 --- a/drivers/mmc/host/mmci.h +++ b/drivers/mmc/host/mmci.h @@ -28,6 +28,8 @@ #define MCI_ST_UX500_NEG_EDGE (1 << 13) #define MCI_ST_UX500_HWFCEN (1 << 14) #define MCI_ST_UX500_CLK_INV (1 << 15) +/* Modified PL180 on Versatile Express platform */ +#define MCI_ARM_HWFCEN (1 << 12) #define MMCIARGUMENT 0x008 #define MMCICOMMAND 0x00c @@ -193,7 +195,10 @@ struct mmci_host { /* pio stuff */ struct sg_mapping_iter sg_miter; unsigned int size; - struct regulator *vcc; + + /* pinctrl handles */ + struct pinctrl *pinctrl; + struct pinctrl_state *pins_default; #ifdef CONFIG_DMA_ENGINE /* DMA stuff */ diff --git a/drivers/mmc/host/mvsdio.c b/drivers/mmc/host/mvsdio.c index de4c20b3936c..145cdaf000d1 100644 --- a/drivers/mmc/host/mvsdio.c +++ b/drivers/mmc/host/mvsdio.c @@ -21,7 +21,11 @@ #include <linux/irq.h> #include <linux/clk.h> #include <linux/gpio.h> +#include <linux/of_gpio.h> +#include <linux/of_irq.h> #include <linux/mmc/host.h> +#include <linux/mmc/slot-gpio.h> +#include <linux/pinctrl/consumer.h> #include <asm/sizes.h> #include <asm/unaligned.h> @@ -50,11 +54,7 @@ struct mvsd_host { struct timer_list timer; struct mmc_host *mmc; struct device *dev; - struct resource *res; - int irq; struct clk *clk; - int gpio_card_detect; - int gpio_write_protect; }; #define mvsd_write(offs, val) writel(val, iobase + (offs)) @@ -540,13 +540,6 @@ static void mvsd_timeout_timer(unsigned long data) mmc_request_done(host->mmc, mrq); } -static irqreturn_t mvsd_card_detect_irq(int irq, void *dev) -{ - struct mvsd_host *host = dev; - mmc_detect_change(host->mmc, msecs_to_jiffies(100)); - return IRQ_HANDLED; -} - static void mvsd_enable_sdio_irq(struct mmc_host *mmc, int enable) { struct mvsd_host *host = mmc_priv(mmc); @@ -566,20 +559,6 @@ static void mvsd_enable_sdio_irq(struct mmc_host *mmc, int enable) spin_unlock_irqrestore(&host->lock, flags); } -static int mvsd_get_ro(struct mmc_host *mmc) -{ - struct mvsd_host *host = mmc_priv(mmc); - - if (host->gpio_write_protect) - return gpio_get_value(host->gpio_write_protect); - - /* - * Board doesn't support read only detection; let the mmc core - * decide what to do. - */ - return -ENOSYS; -} - static void mvsd_power_up(struct mvsd_host *host) { void __iomem *iobase = host->base; @@ -676,7 +655,7 @@ static void mvsd_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) static const struct mmc_host_ops mvsd_ops = { .request = mvsd_request, - .get_ro = mvsd_get_ro, + .get_ro = mmc_gpio_get_ro, .set_ios = mvsd_set_ios, .enable_sdio_irq = mvsd_enable_sdio_irq, }; @@ -705,23 +684,20 @@ mv_conf_mbus_windows(struct mvsd_host *host, static int __init mvsd_probe(struct platform_device *pdev) { + struct device_node *np = pdev->dev.of_node; struct mmc_host *mmc = NULL; struct mvsd_host *host = NULL; - const struct mvsdio_platform_data *mvsd_data; const struct mbus_dram_target_info *dram; struct resource *r; int ret, irq; + int gpio_card_detect, gpio_write_protect; + struct pinctrl *pinctrl; r = platform_get_resource(pdev, IORESOURCE_MEM, 0); irq = platform_get_irq(pdev, 0); - mvsd_data = pdev->dev.platform_data; - if (!r || irq < 0 || !mvsd_data) + if (!r || irq < 0) return -ENXIO; - r = request_mem_region(r->start, SZ_1K, DRIVER_NAME); - if (!r) - return -EBUSY; - mmc = mmc_alloc_host(sizeof(struct mvsd_host), &pdev->dev); if (!mmc) { ret = -ENOMEM; @@ -731,8 +707,43 @@ static int __init mvsd_probe(struct platform_device *pdev) host = mmc_priv(mmc); host->mmc = mmc; host->dev = &pdev->dev; - host->res = r; - host->base_clock = mvsd_data->clock / 2; + + pinctrl = devm_pinctrl_get_select_default(&pdev->dev); + if (IS_ERR(pinctrl)) + dev_warn(&pdev->dev, "no pins associated\n"); + + /* + * Some non-DT platforms do not pass a clock, and the clock + * frequency is passed through platform_data. On DT platforms, + * a clock must always be passed, even if there is no gatable + * clock associated to the SDIO interface (it can simply be a + * fixed rate clock). + */ + host->clk = devm_clk_get(&pdev->dev, NULL); + if (!IS_ERR(host->clk)) + clk_prepare_enable(host->clk); + + if (np) { + if (IS_ERR(host->clk)) { + dev_err(&pdev->dev, "DT platforms must have a clock associated\n"); + ret = -EINVAL; + goto out; + } + + host->base_clock = clk_get_rate(host->clk) / 2; + gpio_card_detect = of_get_named_gpio(np, "cd-gpios", 0); + gpio_write_protect = of_get_named_gpio(np, "wp-gpios", 0); + } else { + const struct mvsdio_platform_data *mvsd_data; + mvsd_data = pdev->dev.platform_data; + if (!mvsd_data) { + ret = -ENXIO; + goto out; + } + host->base_clock = mvsd_data->clock / 2; + gpio_card_detect = mvsd_data->gpio_card_detect; + gpio_write_protect = mvsd_data->gpio_write_protect; + } mmc->ops = &mvsd_ops; @@ -752,7 +763,7 @@ static int __init mvsd_probe(struct platform_device *pdev) spin_lock_init(&host->lock); - host->base = ioremap(r->start, SZ_4K); + host->base = devm_request_and_ioremap(&pdev->dev, r); if (!host->base) { ret = -ENOMEM; goto out; @@ -765,48 +776,20 @@ static int __init mvsd_probe(struct platform_device *pdev) mvsd_power_down(host); - ret = request_irq(irq, mvsd_irq, 0, DRIVER_NAME, host); + ret = devm_request_irq(&pdev->dev, irq, mvsd_irq, 0, DRIVER_NAME, host); if (ret) { pr_err("%s: cannot assign irq %d\n", DRIVER_NAME, irq); goto out; - } else - host->irq = irq; - - /* Not all platforms can gate the clock, so it is not - an error if the clock does not exists. */ - host->clk = clk_get(&pdev->dev, NULL); - if (!IS_ERR(host->clk)) { - clk_prepare_enable(host->clk); } - if (mvsd_data->gpio_card_detect) { - ret = gpio_request(mvsd_data->gpio_card_detect, - DRIVER_NAME " cd"); - if (ret == 0) { - gpio_direction_input(mvsd_data->gpio_card_detect); - irq = gpio_to_irq(mvsd_data->gpio_card_detect); - ret = request_irq(irq, mvsd_card_detect_irq, - IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING, - DRIVER_NAME " cd", host); - if (ret == 0) - host->gpio_card_detect = - mvsd_data->gpio_card_detect; - else - gpio_free(mvsd_data->gpio_card_detect); - } - } - if (!host->gpio_card_detect) + if (gpio_is_valid(gpio_card_detect)) { + ret = mmc_gpio_request_cd(mmc, gpio_card_detect); + if (ret) + goto out; + } else mmc->caps |= MMC_CAP_NEEDS_POLL; - if (mvsd_data->gpio_write_protect) { - ret = gpio_request(mvsd_data->gpio_write_protect, - DRIVER_NAME " wp"); - if (ret == 0) { - gpio_direction_input(mvsd_data->gpio_write_protect); - host->gpio_write_protect = - mvsd_data->gpio_write_protect; - } - } + mmc_gpio_request_ro(mmc, gpio_write_protect); setup_timer(&host->timer, mvsd_timeout_timer, (unsigned long)host); platform_set_drvdata(pdev, mmc); @@ -816,34 +799,21 @@ static int __init mvsd_probe(struct platform_device *pdev) pr_notice("%s: %s driver initialized, ", mmc_hostname(mmc), DRIVER_NAME); - if (host->gpio_card_detect) + if (!(mmc->caps & MMC_CAP_NEEDS_POLL)) printk("using GPIO %d for card detection\n", - host->gpio_card_detect); + gpio_card_detect); else printk("lacking card detect (fall back to polling)\n"); return 0; out: - if (host) { - if (host->irq) - free_irq(host->irq, host); - if (host->gpio_card_detect) { - free_irq(gpio_to_irq(host->gpio_card_detect), host); - gpio_free(host->gpio_card_detect); - } - if (host->gpio_write_protect) - gpio_free(host->gpio_write_protect); - if (host->base) - iounmap(host->base); - } - if (r) - release_resource(r); - if (mmc) - if (!IS_ERR_OR_NULL(host->clk)) { + if (mmc) { + mmc_gpio_free_cd(mmc); + mmc_gpio_free_ro(mmc); + if (!IS_ERR(host->clk)) clk_disable_unprepare(host->clk); - clk_put(host->clk); - } mmc_free_host(mmc); + } return ret; } @@ -852,28 +822,18 @@ static int __exit mvsd_remove(struct platform_device *pdev) { struct mmc_host *mmc = platform_get_drvdata(pdev); - if (mmc) { - struct mvsd_host *host = mmc_priv(mmc); + struct mvsd_host *host = mmc_priv(mmc); - if (host->gpio_card_detect) { - free_irq(gpio_to_irq(host->gpio_card_detect), host); - gpio_free(host->gpio_card_detect); - } - mmc_remove_host(mmc); - free_irq(host->irq, host); - if (host->gpio_write_protect) - gpio_free(host->gpio_write_protect); - del_timer_sync(&host->timer); - mvsd_power_down(host); - iounmap(host->base); - release_resource(host->res); + mmc_gpio_free_cd(mmc); + mmc_gpio_free_ro(mmc); + mmc_remove_host(mmc); + del_timer_sync(&host->timer); + mvsd_power_down(host); + + if (!IS_ERR(host->clk)) + clk_disable_unprepare(host->clk); + mmc_free_host(mmc); - if (!IS_ERR(host->clk)) { - clk_disable_unprepare(host->clk); - clk_put(host->clk); - } - mmc_free_host(mmc); - } platform_set_drvdata(pdev, NULL); return 0; } @@ -905,12 +865,19 @@ static int mvsd_resume(struct platform_device *dev) #define mvsd_resume NULL #endif +static const struct of_device_id mvsdio_dt_ids[] = { + { .compatible = "marvell,orion-sdio" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, mvsdio_dt_ids); + static struct platform_driver mvsd_driver = { .remove = __exit_p(mvsd_remove), .suspend = mvsd_suspend, .resume = mvsd_resume, .driver = { .name = DRIVER_NAME, + .of_match_table = mvsdio_dt_ids, }, }; diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c index 565c2e4fac75..a72936eea6fa 100644 --- a/drivers/mmc/host/mxcmmc.c +++ b/drivers/mmc/host/mxcmmc.c @@ -41,7 +41,6 @@ #include <linux/platform_data/mmc-mxcmmc.h> #include <linux/platform_data/dma-imx.h> -#include <mach/hardware.h> #define DRIVER_NAME "mxc-mmc" #define MXCMCI_TIMEOUT_MS 10000 @@ -113,6 +112,11 @@ #define INT_WRITE_OP_DONE_EN (1 << 1) #define INT_READ_OP_EN (1 << 0) +enum mxcmci_type { + IMX21_MMC, + IMX31_MMC, +}; + struct mxcmci_host { struct mmc_host *mmc; struct resource *res; @@ -153,7 +157,26 @@ struct mxcmci_host { struct imx_dma_data dma_data; struct timer_list watchdog; + enum mxcmci_type devtype; +}; + +static struct platform_device_id mxcmci_devtype[] = { + { + .name = "imx21-mmc", + .driver_data = IMX21_MMC, + }, { + .name = "imx31-mmc", + .driver_data = IMX31_MMC, + }, { + /* sentinel */ + } }; +MODULE_DEVICE_TABLE(platform, mxcmci_devtype); + +static inline int is_imx31_mmc(struct mxcmci_host *host) +{ + return host->devtype == IMX31_MMC; +} static void mxcmci_set_clk_rate(struct mxcmci_host *host, unsigned int clk_ios); @@ -240,7 +263,7 @@ static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data) return 0; for_each_sg(data->sg, sg, data->sg_len, i) { - if (sg->offset & 3 || sg->length & 3) { + if (sg->offset & 3 || sg->length & 3 || sg->length < 512) { host->do_dma = 0; return 0; } @@ -843,6 +866,8 @@ static void mxcmci_enable_sdio_irq(struct mmc_host *mmc, int enable) static void mxcmci_init_card(struct mmc_host *host, struct mmc_card *card) { + struct mxcmci_host *mxcmci = mmc_priv(host); + /* * MX3 SoCs have a silicon bug which corrupts CRC calculation of * multi-block transfers when connected SDIO peripheral doesn't @@ -850,7 +875,7 @@ static void mxcmci_init_card(struct mmc_host *host, struct mmc_card *card) * One way to prevent this is to only allow 1-bit transfers. */ - if (cpu_is_mx3() && card->type == MMC_TYPE_SDIO) + if (is_imx31_mmc(mxcmci) && card->type == MMC_TYPE_SDIO) host->caps &= ~MMC_CAP_4_BIT_DATA; else host->caps |= MMC_CAP_4_BIT_DATA; @@ -948,6 +973,7 @@ static int mxcmci_probe(struct platform_device *pdev) host->mmc = mmc; host->pdata = pdev->dev.platform_data; + host->devtype = pdev->id_entry->driver_data; spin_lock_init(&host->lock); mxcmci_init_ocr(host); @@ -1120,6 +1146,7 @@ static const struct dev_pm_ops mxcmci_pm_ops = { static struct platform_driver mxcmci_driver = { .probe = mxcmci_probe, .remove = mxcmci_remove, + .id_table = mxcmci_devtype, .driver = { .name = DRIVER_NAME, .owner = THIS_MODULE, @@ -1134,4 +1161,4 @@ module_platform_driver(mxcmci_driver); MODULE_DESCRIPTION("i.MX Multimedia Card Interface Driver"); MODULE_AUTHOR("Sascha Hauer, Pengutronix"); MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:imx-mmc"); +MODULE_ALIAS("platform:mxc-mmc"); diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c index 80d1e6d4b0ae..4efe3021b217 100644 --- a/drivers/mmc/host/mxs-mmc.c +++ b/drivers/mmc/host/mxs-mmc.c @@ -43,7 +43,6 @@ #include <linux/module.h> #include <linux/pinctrl/consumer.h> #include <linux/stmp_device.h> -#include <linux/mmc/mxs-mmc.h> #include <linux/spi/mxs-spi.h> #define DRIVER_NAME "mxs-mmc" @@ -355,7 +354,7 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host) struct dma_async_tx_descriptor *desc; struct scatterlist *sgl = data->sg, *sg; unsigned int sg_len = data->sg_len; - int i; + unsigned int i; unsigned short dma_data_dir, timeout; enum dma_transfer_direction slave_dirn; @@ -593,13 +592,13 @@ static int mxs_mmc_probe(struct platform_device *pdev) struct mxs_mmc_host *host; struct mmc_host *mmc; struct resource *iores, *dmares; - struct mxs_mmc_platform_data *pdata; struct pinctrl *pinctrl; int ret = 0, irq_err, irq_dma; dma_cap_mask_t mask; struct regulator *reg_vmmc; enum of_gpio_flags flags; struct mxs_ssp *ssp; + u32 bus_width = 0; iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0); @@ -615,9 +614,9 @@ static int mxs_mmc_probe(struct platform_device *pdev) host = mmc_priv(mmc); ssp = &host->ssp; ssp->dev = &pdev->dev; - ssp->base = devm_request_and_ioremap(&pdev->dev, iores); - if (!ssp->base) { - ret = -EADDRNOTAVAIL; + ssp->base = devm_ioremap_resource(&pdev->dev, iores); + if (IS_ERR(ssp->base)) { + ret = PTR_ERR(ssp->base); goto out_mmc_free; } @@ -682,25 +681,15 @@ static int mxs_mmc_probe(struct platform_device *pdev) mmc->caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SDIO_IRQ | MMC_CAP_NEEDS_POLL; - pdata = mmc_dev(host->mmc)->platform_data; - if (!pdata) { - u32 bus_width = 0; - of_property_read_u32(np, "bus-width", &bus_width); - if (bus_width == 4) - mmc->caps |= MMC_CAP_4_BIT_DATA; - else if (bus_width == 8) - mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA; - host->wp_gpio = of_get_named_gpio_flags(np, "wp-gpios", 0, - &flags); - if (flags & OF_GPIO_ACTIVE_LOW) - host->wp_inverted = 1; - } else { - if (pdata->flags & SLOTF_8_BIT_CAPABLE) - mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA; - if (pdata->flags & SLOTF_4_BIT_CAPABLE) - mmc->caps |= MMC_CAP_4_BIT_DATA; - host->wp_gpio = pdata->wp_gpio; - } + of_property_read_u32(np, "bus-width", &bus_width); + if (bus_width == 4) + mmc->caps |= MMC_CAP_4_BIT_DATA; + else if (bus_width == 8) + mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA; + host->wp_gpio = of_get_named_gpio_flags(np, "wp-gpios", 0, &flags); + + if (flags & OF_GPIO_ACTIVE_LOW) + host->wp_inverted = 1; mmc->f_min = 400000; mmc->f_max = 288000000; @@ -815,3 +804,4 @@ module_platform_driver(mxs_mmc_driver); MODULE_DESCRIPTION("FREESCALE MXS MMC peripheral"); MODULE_AUTHOR("Freescale Semiconductor"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" DRIVER_NAME); diff --git a/drivers/mmc/host/of_mmc_spi.c b/drivers/mmc/host/of_mmc_spi.c index 1534b582c419..d720b5e05b9c 100644 --- a/drivers/mmc/host/of_mmc_spi.c +++ b/drivers/mmc/host/of_mmc_spi.c @@ -146,7 +146,7 @@ struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi) oms->pdata.get_ro = of_mmc_spi_get_ro; oms->detect_irq = irq_of_parse_and_map(np, 0); - if (oms->detect_irq != NO_IRQ) { + if (oms->detect_irq != 0) { oms->pdata.init = of_mmc_spi_init; oms->pdata.exit = of_mmc_spi_exit; } else { diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c index 48ad361613ef..4254975f931d 100644 --- a/drivers/mmc/host/omap.c +++ b/drivers/mmc/host/omap.c @@ -28,9 +28,8 @@ #include <linux/clk.h> #include <linux/scatterlist.h> #include <linux/slab.h> +#include <linux/platform_data/mmc-omap.h> -#include <plat/mmc.h> -#include <plat/dma.h> #define OMAP_MMC_REG_CMD 0x00 #define OMAP_MMC_REG_ARGL 0x01 @@ -72,6 +71,13 @@ #define OMAP_MMC_STAT_CARD_BUSY (1 << 2) #define OMAP_MMC_STAT_END_OF_CMD (1 << 0) +#define mmc_omap7xx() (host->features & MMC_OMAP7XX) +#define mmc_omap15xx() (host->features & MMC_OMAP15XX) +#define mmc_omap16xx() (host->features & MMC_OMAP16XX) +#define MMC_OMAP1_MASK (MMC_OMAP7XX | MMC_OMAP15XX | MMC_OMAP16XX) +#define mmc_omap1() (host->features & MMC_OMAP1_MASK) +#define mmc_omap2() (!mmc_omap1()) + #define OMAP_MMC_REG(host, reg) (OMAP_MMC_REG_##reg << (host)->reg_shift) #define OMAP_MMC_READ(host, reg) __raw_readw((host)->virt_base + OMAP_MMC_REG(host, reg)) #define OMAP_MMC_WRITE(host, reg, val) __raw_writew((val), (host)->virt_base + OMAP_MMC_REG(host, reg)) @@ -84,6 +90,16 @@ #define OMAP_MMC_CMDTYPE_AC 2 #define OMAP_MMC_CMDTYPE_ADTC 3 +#define OMAP_DMA_MMC_TX 21 +#define OMAP_DMA_MMC_RX 22 +#define OMAP_DMA_MMC2_TX 54 +#define OMAP_DMA_MMC2_RX 55 + +#define OMAP24XX_DMA_MMC2_TX 47 +#define OMAP24XX_DMA_MMC2_RX 48 +#define OMAP24XX_DMA_MMC1_TX 61 +#define OMAP24XX_DMA_MMC1_RX 62 + #define DRIVER_NAME "mmci-omap" @@ -147,6 +163,7 @@ struct mmc_omap_host { u32 buffer_bytes_left; u32 total_bytes_left; + unsigned features; unsigned use_dma:1; unsigned brs_received:1, dma_done:1; unsigned dma_in_use:1; @@ -988,7 +1005,7 @@ mmc_omap_prepare_data(struct mmc_omap_host *host, struct mmc_request *req) * blocksize is at least that large. Blocksize is * usually 512 bytes; but not for some SD reads. */ - burst = cpu_is_omap15xx() ? 32 : 64; + burst = mmc_omap15xx() ? 32 : 64; if (burst > data->blksz) burst = data->blksz; @@ -1104,8 +1121,7 @@ static void mmc_omap_set_power(struct mmc_omap_slot *slot, int power_on, if (slot->pdata->set_power != NULL) slot->pdata->set_power(mmc_dev(slot->mmc), slot->id, power_on, vdd); - - if (cpu_is_omap24xx()) { + if (mmc_omap2()) { u16 w; if (power_on) { @@ -1214,7 +1230,7 @@ static const struct mmc_host_ops mmc_omap_ops = { .set_ios = mmc_omap_set_ios, }; -static int __devinit mmc_omap_new_slot(struct mmc_omap_host *host, int id) +static int mmc_omap_new_slot(struct mmc_omap_host *host, int id) { struct mmc_omap_slot *slot = NULL; struct mmc_host *mmc; @@ -1239,7 +1255,7 @@ static int __devinit mmc_omap_new_slot(struct mmc_omap_host *host, int id) mmc->ops = &mmc_omap_ops; mmc->f_min = 400000; - if (cpu_class_is_omap2()) + if (mmc_omap2()) mmc->f_max = 48000000; else mmc->f_max = 24000000; @@ -1309,7 +1325,7 @@ static void mmc_omap_remove_slot(struct mmc_omap_slot *slot) mmc_free_host(mmc); } -static int __devinit mmc_omap_probe(struct platform_device *pdev) +static int mmc_omap_probe(struct platform_device *pdev) { struct omap_mmc_platform_data *pdata = pdev->dev.platform_data; struct mmc_omap_host *host = NULL; @@ -1359,6 +1375,7 @@ static int __devinit mmc_omap_probe(struct platform_device *pdev) init_waitqueue_head(&host->slot_wq); host->pdata = pdata; + host->features = host->pdata->slots[0].features; host->dev = &pdev->dev; platform_set_drvdata(pdev, host); @@ -1391,7 +1408,7 @@ static int __devinit mmc_omap_probe(struct platform_device *pdev) host->dma_tx_burst = -1; host->dma_rx_burst = -1; - if (cpu_is_omap24xx()) + if (mmc_omap2()) sig = host->id == 0 ? OMAP24XX_DMA_MMC1_TX : OMAP24XX_DMA_MMC2_TX; else sig = host->id == 0 ? OMAP_DMA_MMC_TX : OMAP_DMA_MMC2_TX; @@ -1407,7 +1424,7 @@ static int __devinit mmc_omap_probe(struct platform_device *pdev) dev_warn(host->dev, "unable to obtain TX DMA engine channel %u\n", sig); #endif - if (cpu_is_omap24xx()) + if (mmc_omap2()) sig = host->id == 0 ? OMAP24XX_DMA_MMC1_RX : OMAP24XX_DMA_MMC2_RX; else sig = host->id == 0 ? OMAP_DMA_MMC_RX : OMAP_DMA_MMC2_RX; @@ -1435,7 +1452,7 @@ static int __devinit mmc_omap_probe(struct platform_device *pdev) } host->nr_slots = pdata->nr_slots; - host->reg_shift = (cpu_is_omap7xx() ? 1 : 2); + host->reg_shift = (mmc_omap7xx() ? 1 : 2); host->mmc_omap_wq = alloc_workqueue("mmc_omap", 0, 0); if (!host->mmc_omap_wq) @@ -1478,7 +1495,7 @@ err_free_mem_region: return ret; } -static int __devexit mmc_omap_remove(struct platform_device *pdev) +static int mmc_omap_remove(struct platform_device *pdev) { struct mmc_omap_host *host = platform_get_drvdata(pdev); int i; @@ -1566,7 +1583,7 @@ static int mmc_omap_resume(struct platform_device *pdev) static struct platform_driver mmc_omap_driver = { .probe = mmc_omap_probe, - .remove = __devexit_p(mmc_omap_remove), + .remove = mmc_omap_remove, .suspend = mmc_omap_suspend, .resume = mmc_omap_resume, .driver = { diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index 54bfd0cc106b..bc5807873b2c 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -37,10 +37,9 @@ #include <linux/io.h> #include <linux/gpio.h> #include <linux/regulator/consumer.h> +#include <linux/pinctrl/consumer.h> #include <linux/pm_runtime.h> -#include <mach/hardware.h> -#include <plat/mmc.h> -#include <plat/cpu.h> +#include <linux/platform_data/mmc-omap.h> /* OMAP HSMMC Host Controller Registers */ #define OMAP_HSMMC_SYSSTATUS 0x0014 @@ -62,6 +61,7 @@ #define VS18 (1 << 26) #define VS30 (1 << 25) +#define HSS (1 << 21) #define SDVS18 (0x5 << 9) #define SDVS30 (0x6 << 9) #define SDVS33 (0x7 << 9) @@ -78,28 +78,17 @@ #define CLKD_SHIFT 6 #define DTO_MASK 0x000F0000 #define DTO_SHIFT 16 -#define INT_EN_MASK 0x307F0033 -#define BWR_ENABLE (1 << 4) -#define BRR_ENABLE (1 << 5) -#define DTO_ENABLE (1 << 20) #define INIT_STREAM (1 << 1) #define DP_SELECT (1 << 21) #define DDIR (1 << 4) -#define DMA_EN 0x1 +#define DMAE 0x1 #define MSBS (1 << 5) #define BCE (1 << 1) #define FOUR_BIT (1 << 1) +#define HSPE (1 << 2) #define DDR (1 << 19) #define DW8 (1 << 5) -#define CC 0x1 -#define TC 0x02 #define OD 0x1 -#define ERR (1 << 15) -#define CMD_TIMEOUT (1 << 16) -#define DATA_TIMEOUT (1 << 20) -#define CMD_CRC (1 << 17) -#define DATA_CRC (1 << 21) -#define CARD_ERR (1 << 28) #define STAT_CLEAR 0xFFFFFFFF #define INIT_STREAM_CMD 0x00000000 #define DUAL_VOLT_OCR_BIT 7 @@ -108,6 +97,26 @@ #define SOFTRESET (1 << 1) #define RESETDONE (1 << 0) +/* Interrupt masks for IE and ISE register */ +#define CC_EN (1 << 0) +#define TC_EN (1 << 1) +#define BWR_EN (1 << 4) +#define BRR_EN (1 << 5) +#define ERR_EN (1 << 15) +#define CTO_EN (1 << 16) +#define CCRC_EN (1 << 17) +#define CEB_EN (1 << 18) +#define CIE_EN (1 << 19) +#define DTO_EN (1 << 20) +#define DCRC_EN (1 << 21) +#define DEB_EN (1 << 22) +#define CERR_EN (1 << 28) +#define BADA_EN (1 << 29) + +#define INT_EN_MASK (BADA_EN | CERR_EN | DEB_EN | DCRC_EN |\ + DTO_EN | CIE_EN | CEB_EN | CCRC_EN | CTO_EN | \ + BRR_EN | BWR_EN | TC_EN | CC_EN) + #define MMC_AUTOSUSPEND_DELAY 100 #define MMC_TIMEOUT_MS 20 #define OMAP_MMC_MIN_CLOCK 400000 @@ -178,7 +187,8 @@ struct omap_hsmmc_host { static int omap_hsmmc_card_detect(struct device *dev, int slot) { - struct omap_mmc_platform_data *mmc = dev->platform_data; + struct omap_hsmmc_host *host = dev_get_drvdata(dev); + struct omap_mmc_platform_data *mmc = host->pdata; /* NOTE: assumes card detect signal is active-low */ return !gpio_get_value_cansleep(mmc->slots[0].switch_pin); @@ -186,7 +196,8 @@ static int omap_hsmmc_card_detect(struct device *dev, int slot) static int omap_hsmmc_get_wp(struct device *dev, int slot) { - struct omap_mmc_platform_data *mmc = dev->platform_data; + struct omap_hsmmc_host *host = dev_get_drvdata(dev); + struct omap_mmc_platform_data *mmc = host->pdata; /* NOTE: assumes write protect signal is active-high */ return gpio_get_value_cansleep(mmc->slots[0].gpio_wp); @@ -194,7 +205,8 @@ static int omap_hsmmc_get_wp(struct device *dev, int slot) static int omap_hsmmc_get_cover_state(struct device *dev, int slot) { - struct omap_mmc_platform_data *mmc = dev->platform_data; + struct omap_hsmmc_host *host = dev_get_drvdata(dev); + struct omap_mmc_platform_data *mmc = host->pdata; /* NOTE: assumes card detect signal is active-low */ return !gpio_get_value_cansleep(mmc->slots[0].switch_pin); @@ -204,7 +216,8 @@ static int omap_hsmmc_get_cover_state(struct device *dev, int slot) static int omap_hsmmc_suspend_cdirq(struct device *dev, int slot) { - struct omap_mmc_platform_data *mmc = dev->platform_data; + struct omap_hsmmc_host *host = dev_get_drvdata(dev); + struct omap_mmc_platform_data *mmc = host->pdata; disable_irq(mmc->slots[0].card_detect_irq); return 0; @@ -212,7 +225,8 @@ static int omap_hsmmc_suspend_cdirq(struct device *dev, int slot) static int omap_hsmmc_resume_cdirq(struct device *dev, int slot) { - struct omap_mmc_platform_data *mmc = dev->platform_data; + struct omap_hsmmc_host *host = dev_get_drvdata(dev); + struct omap_mmc_platform_data *mmc = host->pdata; enable_irq(mmc->slots[0].card_detect_irq); return 0; @@ -297,7 +311,7 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host) reg = regulator_get(host->dev, "vmmc"); if (IS_ERR(reg)) { - dev_dbg(host->dev, "vmmc regulator missing\n"); + dev_err(host->dev, "vmmc regulator missing\n"); return PTR_ERR(reg); } else { mmc_slot(host).set_power = omap_hsmmc_set_power; @@ -450,13 +464,13 @@ static void omap_hsmmc_enable_irq(struct omap_hsmmc_host *host, unsigned int irq_mask; if (host->use_dma) - irq_mask = INT_EN_MASK & ~(BRR_ENABLE | BWR_ENABLE); + irq_mask = INT_EN_MASK & ~(BRR_EN | BWR_EN); else irq_mask = INT_EN_MASK; /* Disable timeout for erases */ if (cmd->opcode == MMC_ERASE) - irq_mask &= ~DTO_ENABLE; + irq_mask &= ~DTO_EN; OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR); OMAP_HSMMC_WRITE(host->base, ISE, irq_mask); @@ -489,6 +503,7 @@ static void omap_hsmmc_set_clock(struct omap_hsmmc_host *host) struct mmc_ios *ios = &host->mmc->ios; unsigned long regval; unsigned long timeout; + unsigned long clkdiv; dev_vdbg(mmc_dev(host->mmc), "Set clock to %uHz\n", ios->clock); @@ -496,7 +511,8 @@ static void omap_hsmmc_set_clock(struct omap_hsmmc_host *host) regval = OMAP_HSMMC_READ(host->base, SYSCTL); regval = regval & ~(CLKD_MASK | DTO_MASK); - regval = regval | (calc_divisor(host, ios) << 6) | (DTO << 16); + clkdiv = calc_divisor(host, ios); + regval = regval | (clkdiv << 6) | (DTO << 16); OMAP_HSMMC_WRITE(host->base, SYSCTL, regval); OMAP_HSMMC_WRITE(host->base, SYSCTL, OMAP_HSMMC_READ(host->base, SYSCTL) | ICE); @@ -507,6 +523,27 @@ static void omap_hsmmc_set_clock(struct omap_hsmmc_host *host) && time_before(jiffies, timeout)) cpu_relax(); + /* + * Enable High-Speed Support + * Pre-Requisites + * - Controller should support High-Speed-Enable Bit + * - Controller should not be using DDR Mode + * - Controller should advertise that it supports High Speed + * in capabilities register + * - MMC/SD clock coming out of controller > 25MHz + */ + if ((mmc_slot(host).features & HSMMC_HAS_HSPE_SUPPORT) && + (ios->timing != MMC_TIMING_UHS_DDR50) && + ((OMAP_HSMMC_READ(host->base, CAPA) & HSS) == HSS)) { + regval = OMAP_HSMMC_READ(host->base, HCTL); + if (clkdiv && (clk_get_rate(host->fclk)/clkdiv) > 25000000) + regval |= HSPE; + else + regval &= ~HSPE; + + OMAP_HSMMC_WRITE(host->base, HCTL, regval); + } + omap_hsmmc_start_clock(host); } @@ -671,8 +708,8 @@ static void send_init_stream(struct omap_hsmmc_host *host) OMAP_HSMMC_WRITE(host->base, CMD, INIT_STREAM_CMD); timeout = jiffies + msecs_to_jiffies(MMC_TIMEOUT_MS); - while ((reg != CC) && time_before(jiffies, timeout)) - reg = OMAP_HSMMC_READ(host->base, STAT) & CC; + while ((reg != CC_EN) && time_before(jiffies, timeout)) + reg = OMAP_HSMMC_READ(host->base, STAT) & CC_EN; OMAP_HSMMC_WRITE(host->base, CON, OMAP_HSMMC_READ(host->base, CON) & ~INIT_STREAM); @@ -763,7 +800,7 @@ omap_hsmmc_start_command(struct omap_hsmmc_host *host, struct mmc_command *cmd, } if (host->use_dma) - cmdreg |= DMA_EN; + cmdreg |= DMAE; host->req_in_progress = 1; @@ -963,16 +1000,20 @@ static inline void omap_hsmmc_reset_controller_fsm(struct omap_hsmmc_host *host, __func__); } -static void hsmmc_command_incomplete(struct omap_hsmmc_host *host, int err) +static void hsmmc_command_incomplete(struct omap_hsmmc_host *host, + int err, int end_cmd) { - omap_hsmmc_reset_controller_fsm(host, SRC); - host->cmd->error = err; + if (end_cmd) { + omap_hsmmc_reset_controller_fsm(host, SRC); + if (host->cmd) + host->cmd->error = err; + } if (host->data) { omap_hsmmc_reset_controller_fsm(host, SRD); omap_hsmmc_dma_cleanup(host, err); - } - + } else if (host->mrq && host->mrq->cmd) + host->mrq->cmd->error = err; } static void omap_hsmmc_do_irq(struct omap_hsmmc_host *host, int status) @@ -983,23 +1024,25 @@ static void omap_hsmmc_do_irq(struct omap_hsmmc_host *host, int status) data = host->data; dev_vdbg(mmc_dev(host->mmc), "IRQ Status is %x\n", status); - if (status & ERR) { + if (status & ERR_EN) { omap_hsmmc_dbg_report_irq(host, status); - if (status & (CMD_TIMEOUT | DATA_TIMEOUT)) - hsmmc_command_incomplete(host, -ETIMEDOUT); - else if (status & (CMD_CRC | DATA_CRC)) - hsmmc_command_incomplete(host, -EILSEQ); - end_cmd = 1; + if (status & (CTO_EN | CCRC_EN)) + end_cmd = 1; + if (status & (CTO_EN | DTO_EN)) + hsmmc_command_incomplete(host, -ETIMEDOUT, end_cmd); + else if (status & (CCRC_EN | DCRC_EN)) + hsmmc_command_incomplete(host, -EILSEQ, end_cmd); + if (host->data || host->response_busy) { - end_trans = 1; + end_trans = !end_cmd; host->response_busy = 0; } } - if (end_cmd || ((status & CC) && host->cmd)) + if (end_cmd || ((status & CC_EN) && host->cmd)) omap_hsmmc_cmd_done(host, host->cmd); - if ((end_trans || (status & TC)) && host->mrq) + if ((end_trans || (status & TC_EN)) && host->mrq) omap_hsmmc_xfer_done(host, data); } @@ -1096,7 +1139,7 @@ static int omap_hsmmc_switch_opcond(struct omap_hsmmc_host *host, int vdd) return 0; err: - dev_dbg(mmc_dev(host->mmc), "Unable to switch operating voltage\n"); + dev_err(mmc_dev(host->mmc), "Unable to switch operating voltage\n"); return ret; } @@ -1355,7 +1398,7 @@ omap_hsmmc_prepare_data(struct omap_hsmmc_host *host, struct mmc_request *req) if (host->use_dma) { ret = omap_hsmmc_start_dma_transfer(host, req); if (ret != 0) { - dev_dbg(mmc_dev(host->mmc), "MMC start dma failure\n"); + dev_err(mmc_dev(host->mmc), "MMC start dma failure\n"); return ret; } } @@ -1673,7 +1716,7 @@ static struct omap_mmc_platform_data *of_get_hsmmc_pdata(struct device *dev) { struct omap_mmc_platform_data *pdata; struct device_node *np = dev->of_node; - u32 bus_width; + u32 bus_width, max_freq; pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) @@ -1700,6 +1743,12 @@ static struct omap_mmc_platform_data *of_get_hsmmc_pdata(struct device *dev) if (of_find_property(np, "ti,needs-special-reset", NULL)) pdata->slots[0].features |= HSMMC_HAS_UPDATED_RESET; + if (!of_property_read_u32(np, "max-frequency", &max_freq)) + pdata->max_freq = max_freq; + + if (of_find_property(np, "ti,needs-special-hs-handling", NULL)) + pdata->slots[0].features |= HSMMC_HAS_HSPE_SUPPORT; + return pdata; } #else @@ -1710,7 +1759,7 @@ static inline struct omap_mmc_platform_data } #endif -static int __devinit omap_hsmmc_probe(struct platform_device *pdev) +static int omap_hsmmc_probe(struct platform_device *pdev) { struct omap_mmc_platform_data *pdata = pdev->dev.platform_data; struct mmc_host *mmc; @@ -1720,6 +1769,7 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev) const struct of_device_id *match; dma_cap_mask_t mask; unsigned tx_req, rx_req; + struct pinctrl *pinctrl; match = of_match_device(of_match_ptr(omap_mmc_of_match), &pdev->dev); if (match) { @@ -1816,7 +1866,6 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev) * MMC can still work without debounce clock. */ if (IS_ERR(host->dbclk)) { - dev_warn(mmc_dev(host->mmc), "Failed to get debounce clk\n"); host->dbclk = NULL; } else if (clk_prepare_enable(host->dbclk) != 0) { dev_warn(mmc_dev(host->mmc), "Failed to enable debounce clk\n"); @@ -1884,13 +1933,13 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev) ret = request_irq(host->irq, omap_hsmmc_irq, 0, mmc_hostname(mmc), host); if (ret) { - dev_dbg(mmc_dev(host->mmc), "Unable to grab HSMMC IRQ\n"); + dev_err(mmc_dev(host->mmc), "Unable to grab HSMMC IRQ\n"); goto err_irq; } if (pdata->init != NULL) { if (pdata->init(&pdev->dev) != 0) { - dev_dbg(mmc_dev(host->mmc), + dev_err(mmc_dev(host->mmc), "Unable to configure MMC IRQs\n"); goto err_irq_cd_init; } @@ -1913,7 +1962,7 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev) IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, mmc_hostname(mmc), host); if (ret) { - dev_dbg(mmc_dev(host->mmc), + dev_err(mmc_dev(host->mmc), "Unable to grab MMC CD IRQ\n"); goto err_irq_cd; } @@ -1923,6 +1972,11 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev) omap_hsmmc_disable_irq(host); + pinctrl = devm_pinctrl_get_select_default(&pdev->dev); + if (IS_ERR(pinctrl)) + dev_warn(&pdev->dev, + "pins are not configured from the driver\n"); + omap_hsmmc_protect_card(host); mmc_add_host(mmc); @@ -1981,7 +2035,7 @@ err: return ret; } -static int __devexit omap_hsmmc_remove(struct platform_device *pdev) +static int omap_hsmmc_remove(struct platform_device *pdev) { struct omap_hsmmc_host *host = platform_get_drvdata(pdev); struct resource *res; @@ -2009,9 +2063,9 @@ static int __devexit omap_hsmmc_remove(struct platform_device *pdev) clk_put(host->dbclk); } - mmc_free_host(host->mmc); + omap_hsmmc_gpio_free(host->pdata); iounmap(host->base); - omap_hsmmc_gpio_free(pdev->dev.platform_data); + mmc_free_host(host->mmc); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (res) @@ -2022,6 +2076,25 @@ static int __devexit omap_hsmmc_remove(struct platform_device *pdev) } #ifdef CONFIG_PM +static int omap_hsmmc_prepare(struct device *dev) +{ + struct omap_hsmmc_host *host = dev_get_drvdata(dev); + + if (host->pdata->suspend) + return host->pdata->suspend(dev, host->slot_id); + + return 0; +} + +static void omap_hsmmc_complete(struct device *dev) +{ + struct omap_hsmmc_host *host = dev_get_drvdata(dev); + + if (host->pdata->resume) + host->pdata->resume(dev, host->slot_id); + +} + static int omap_hsmmc_suspend(struct device *dev) { int ret = 0; @@ -2035,23 +2108,10 @@ static int omap_hsmmc_suspend(struct device *dev) pm_runtime_get_sync(host->dev); host->suspended = 1; - if (host->pdata->suspend) { - ret = host->pdata->suspend(dev, host->slot_id); - if (ret) { - dev_dbg(dev, "Unable to handle MMC board" - " level suspend\n"); - host->suspended = 0; - return ret; - } - } ret = mmc_suspend_host(host->mmc); if (ret) { host->suspended = 0; - if (host->pdata->resume) { - if (host->pdata->resume(dev, host->slot_id)) - dev_dbg(dev, "Unmask interrupt failed\n"); - } goto err; } @@ -2088,12 +2148,6 @@ static int omap_hsmmc_resume(struct device *dev) if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER)) omap_hsmmc_conf_bus_power(host); - if (host->pdata->resume) { - ret = host->pdata->resume(dev, host->slot_id); - if (ret) - dev_dbg(dev, "Unmask interrupt failed\n"); - } - omap_hsmmc_protect_card(host); /* Notify the core to resume the host */ @@ -2109,8 +2163,10 @@ static int omap_hsmmc_resume(struct device *dev) } #else +#define omap_hsmmc_prepare NULL +#define omap_hsmmc_complete NULL #define omap_hsmmc_suspend NULL -#define omap_hsmmc_resume NULL +#define omap_hsmmc_resume NULL #endif static int omap_hsmmc_runtime_suspend(struct device *dev) @@ -2138,13 +2194,15 @@ static int omap_hsmmc_runtime_resume(struct device *dev) static struct dev_pm_ops omap_hsmmc_dev_pm_ops = { .suspend = omap_hsmmc_suspend, .resume = omap_hsmmc_resume, + .prepare = omap_hsmmc_prepare, + .complete = omap_hsmmc_complete, .runtime_suspend = omap_hsmmc_runtime_suspend, .runtime_resume = omap_hsmmc_runtime_resume, }; static struct platform_driver omap_hsmmc_driver = { .probe = omap_hsmmc_probe, - .remove = __devexit_p(omap_hsmmc_remove), + .remove = omap_hsmmc_remove, .driver = { .name = DRIVER_NAME, .owner = THIS_MODULE, diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c index 3f9d6d577a91..2b2f65ada22e 100644 --- a/drivers/mmc/host/pxamci.c +++ b/drivers/mmc/host/pxamci.c @@ -584,7 +584,7 @@ static const struct of_device_id pxa_mmc_dt_ids[] = { MODULE_DEVICE_TABLE(of, pxa_mmc_dt_ids); -static int __devinit pxamci_of_init(struct platform_device *pdev) +static int pxamci_of_init(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct pxamci_platform_data *pdata; @@ -614,7 +614,7 @@ static int __devinit pxamci_of_init(struct platform_device *pdev) return 0; } #else -static int __devinit pxamci_of_init(struct platform_device *pdev) +static int pxamci_of_init(struct platform_device *pdev) { return 0; } diff --git a/drivers/mmc/host/rtsx_pci_sdmmc.c b/drivers/mmc/host/rtsx_pci_sdmmc.c new file mode 100644 index 000000000000..f981f7d1f6e3 --- /dev/null +++ b/drivers/mmc/host/rtsx_pci_sdmmc.c @@ -0,0 +1,1341 @@ +/* Realtek PCI-Express SD/MMC Card Interface driver + * + * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see <http://www.gnu.org/licenses/>. + * + * Author: + * Wei WANG <wei_wang@realsil.com.cn> + * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China + */ + +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/highmem.h> +#include <linux/delay.h> +#include <linux/platform_device.h> +#include <linux/mmc/host.h> +#include <linux/mmc/mmc.h> +#include <linux/mmc/sd.h> +#include <linux/mmc/card.h> +#include <linux/mfd/rtsx_pci.h> +#include <asm/unaligned.h> + +/* SD Tuning Data Structure + * Record continuous timing phase path + */ +struct timing_phase_path { + int start; + int end; + int mid; + int len; +}; + +struct realtek_pci_sdmmc { + struct platform_device *pdev; + struct rtsx_pcr *pcr; + struct mmc_host *mmc; + struct mmc_request *mrq; + + struct mutex host_mutex; + + u8 ssc_depth; + unsigned int clock; + bool vpclk; + bool double_clk; + bool eject; + bool initial_mode; + bool ddr_mode; +}; + +static inline struct device *sdmmc_dev(struct realtek_pci_sdmmc *host) +{ + return &(host->pdev->dev); +} + +static inline void sd_clear_error(struct realtek_pci_sdmmc *host) +{ + rtsx_pci_write_register(host->pcr, CARD_STOP, + SD_STOP | SD_CLR_ERR, SD_STOP | SD_CLR_ERR); +} + +#ifdef DEBUG +static void sd_print_debug_regs(struct realtek_pci_sdmmc *host) +{ + struct rtsx_pcr *pcr = host->pcr; + u16 i; + u8 *ptr; + + /* Print SD host internal registers */ + rtsx_pci_init_cmd(pcr); + for (i = 0xFDA0; i <= 0xFDAE; i++) + rtsx_pci_add_cmd(pcr, READ_REG_CMD, i, 0, 0); + for (i = 0xFD52; i <= 0xFD69; i++) + rtsx_pci_add_cmd(pcr, READ_REG_CMD, i, 0, 0); + rtsx_pci_send_cmd(pcr, 100); + + ptr = rtsx_pci_get_cmd_data(pcr); + for (i = 0xFDA0; i <= 0xFDAE; i++) + dev_dbg(sdmmc_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++)); + for (i = 0xFD52; i <= 0xFD69; i++) + dev_dbg(sdmmc_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++)); +} +#else +#define sd_print_debug_regs(host) +#endif /* DEBUG */ + +static int sd_read_data(struct realtek_pci_sdmmc *host, u8 *cmd, u16 byte_cnt, + u8 *buf, int buf_len, int timeout) +{ + struct rtsx_pcr *pcr = host->pcr; + int err, i; + u8 trans_mode; + + dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD%d\n", __func__, cmd[0] - 0x40); + + if (!buf) + buf_len = 0; + + if ((cmd[0] & 0x3F) == MMC_SEND_TUNING_BLOCK) + trans_mode = SD_TM_AUTO_TUNING; + else + trans_mode = SD_TM_NORMAL_READ; + + rtsx_pci_init_cmd(pcr); + + for (i = 0; i < 5; i++) + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CMD0 + i, 0xFF, cmd[i]); + + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, (u8)byte_cnt); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_H, + 0xFF, (u8)(byte_cnt >> 8)); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_L, 0xFF, 1); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_H, 0xFF, 0); + + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG2, 0xFF, + SD_CALCULATE_CRC7 | SD_CHECK_CRC16 | + SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_6); + if (trans_mode != SD_TM_AUTO_TUNING) + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, + CARD_DATA_SOURCE, 0x01, PINGPONG_BUFFER); + + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_TRANSFER, + 0xFF, trans_mode | SD_TRANSFER_START); + rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, SD_TRANSFER, + SD_TRANSFER_END, SD_TRANSFER_END); + + err = rtsx_pci_send_cmd(pcr, timeout); + if (err < 0) { + sd_print_debug_regs(host); + dev_dbg(sdmmc_dev(host), + "rtsx_pci_send_cmd fail (err = %d)\n", err); + return err; + } + + if (buf && buf_len) { + err = rtsx_pci_read_ppbuf(pcr, buf, buf_len); + if (err < 0) { + dev_dbg(sdmmc_dev(host), + "rtsx_pci_read_ppbuf fail (err = %d)\n", err); + return err; + } + } + + return 0; +} + +static int sd_write_data(struct realtek_pci_sdmmc *host, u8 *cmd, u16 byte_cnt, + u8 *buf, int buf_len, int timeout) +{ + struct rtsx_pcr *pcr = host->pcr; + int err, i; + u8 trans_mode; + + if (!buf) + buf_len = 0; + + if (buf && buf_len) { + err = rtsx_pci_write_ppbuf(pcr, buf, buf_len); + if (err < 0) { + dev_dbg(sdmmc_dev(host), + "rtsx_pci_write_ppbuf fail (err = %d)\n", err); + return err; + } + } + + trans_mode = cmd ? SD_TM_AUTO_WRITE_2 : SD_TM_AUTO_WRITE_3; + rtsx_pci_init_cmd(pcr); + + if (cmd) { + dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD %d\n", __func__, + cmd[0] - 0x40); + + for (i = 0; i < 5; i++) + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, + SD_CMD0 + i, 0xFF, cmd[i]); + } + + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, (u8)byte_cnt); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_H, + 0xFF, (u8)(byte_cnt >> 8)); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_L, 0xFF, 1); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_H, 0xFF, 0); + + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG2, 0xFF, + SD_CALCULATE_CRC7 | SD_CHECK_CRC16 | + SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_6); + + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_TRANSFER, 0xFF, + trans_mode | SD_TRANSFER_START); + rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, SD_TRANSFER, + SD_TRANSFER_END, SD_TRANSFER_END); + + err = rtsx_pci_send_cmd(pcr, timeout); + if (err < 0) { + sd_print_debug_regs(host); + dev_dbg(sdmmc_dev(host), + "rtsx_pci_send_cmd fail (err = %d)\n", err); + return err; + } + + return 0; +} + +static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host, + struct mmc_command *cmd) +{ + struct rtsx_pcr *pcr = host->pcr; + u8 cmd_idx = (u8)cmd->opcode; + u32 arg = cmd->arg; + int err = 0; + int timeout = 100; + int i; + u8 *ptr; + int stat_idx = 0; + u8 rsp_type; + int rsp_len = 5; + + dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD %d, arg = 0x%08x\n", + __func__, cmd_idx, arg); + + /* Response type: + * R0 + * R1, R5, R6, R7 + * R1b + * R2 + * R3, R4 + */ + switch (mmc_resp_type(cmd)) { + case MMC_RSP_NONE: + rsp_type = SD_RSP_TYPE_R0; + rsp_len = 0; + break; + case MMC_RSP_R1: + rsp_type = SD_RSP_TYPE_R1; + break; + case MMC_RSP_R1B: + rsp_type = SD_RSP_TYPE_R1b; + break; + case MMC_RSP_R2: + rsp_type = SD_RSP_TYPE_R2; + rsp_len = 16; + break; + case MMC_RSP_R3: + rsp_type = SD_RSP_TYPE_R3; + break; + default: + dev_dbg(sdmmc_dev(host), "cmd->flag is not valid\n"); + err = -EINVAL; + goto out; + } + + if (rsp_type == SD_RSP_TYPE_R1b) + timeout = 3000; + + if (cmd->opcode == SD_SWITCH_VOLTAGE) { + err = rtsx_pci_write_register(pcr, SD_BUS_STAT, + 0xFF, SD_CLK_TOGGLE_EN); + if (err < 0) + goto out; + } + + rtsx_pci_init_cmd(pcr); + + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CMD0, 0xFF, 0x40 | cmd_idx); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CMD1, 0xFF, (u8)(arg >> 24)); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CMD2, 0xFF, (u8)(arg >> 16)); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CMD3, 0xFF, (u8)(arg >> 8)); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CMD4, 0xFF, (u8)arg); + + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG2, 0xFF, rsp_type); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE, + 0x01, PINGPONG_BUFFER); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_TRANSFER, + 0xFF, SD_TM_CMD_RSP | SD_TRANSFER_START); + rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, SD_TRANSFER, + SD_TRANSFER_END | SD_STAT_IDLE, + SD_TRANSFER_END | SD_STAT_IDLE); + + if (rsp_type == SD_RSP_TYPE_R2) { + /* Read data from ping-pong buffer */ + for (i = PPBUF_BASE2; i < PPBUF_BASE2 + 16; i++) + rtsx_pci_add_cmd(pcr, READ_REG_CMD, (u16)i, 0, 0); + stat_idx = 16; + } else if (rsp_type != SD_RSP_TYPE_R0) { + /* Read data from SD_CMDx registers */ + for (i = SD_CMD0; i <= SD_CMD4; i++) + rtsx_pci_add_cmd(pcr, READ_REG_CMD, (u16)i, 0, 0); + stat_idx = 5; + } + + rtsx_pci_add_cmd(pcr, READ_REG_CMD, SD_STAT1, 0, 0); + + err = rtsx_pci_send_cmd(pcr, timeout); + if (err < 0) { + sd_print_debug_regs(host); + sd_clear_error(host); + dev_dbg(sdmmc_dev(host), + "rtsx_pci_send_cmd error (err = %d)\n", err); + goto out; + } + + if (rsp_type == SD_RSP_TYPE_R0) { + err = 0; + goto out; + } + + /* Eliminate returned value of CHECK_REG_CMD */ + ptr = rtsx_pci_get_cmd_data(pcr) + 1; + + /* Check (Start,Transmission) bit of Response */ + if ((ptr[0] & 0xC0) != 0) { + err = -EILSEQ; + dev_dbg(sdmmc_dev(host), "Invalid response bit\n"); + goto out; + } + + /* Check CRC7 */ + if (!(rsp_type & SD_NO_CHECK_CRC7)) { + if (ptr[stat_idx] & SD_CRC7_ERR) { + err = -EILSEQ; + dev_dbg(sdmmc_dev(host), "CRC7 error\n"); + goto out; + } + } + + if (rsp_type == SD_RSP_TYPE_R2) { + for (i = 0; i < 4; i++) { + cmd->resp[i] = get_unaligned_be32(ptr + 1 + i * 4); + dev_dbg(sdmmc_dev(host), "cmd->resp[%d] = 0x%08x\n", + i, cmd->resp[i]); + } + } else { + cmd->resp[0] = get_unaligned_be32(ptr + 1); + dev_dbg(sdmmc_dev(host), "cmd->resp[0] = 0x%08x\n", + cmd->resp[0]); + } + +out: + cmd->error = err; +} + +static int sd_rw_multi(struct realtek_pci_sdmmc *host, struct mmc_request *mrq) +{ + struct rtsx_pcr *pcr = host->pcr; + struct mmc_host *mmc = host->mmc; + struct mmc_card *card = mmc->card; + struct mmc_data *data = mrq->data; + int uhs = mmc_sd_card_uhs(card); + int read = (data->flags & MMC_DATA_READ) ? 1 : 0; + u8 cfg2, trans_mode; + int err; + size_t data_len = data->blksz * data->blocks; + + if (read) { + cfg2 = SD_CALCULATE_CRC7 | SD_CHECK_CRC16 | + SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_0; + trans_mode = SD_TM_AUTO_READ_3; + } else { + cfg2 = SD_NO_CALCULATE_CRC7 | SD_CHECK_CRC16 | + SD_NO_WAIT_BUSY_END | SD_NO_CHECK_CRC7 | SD_RSP_LEN_0; + trans_mode = SD_TM_AUTO_WRITE_3; + } + + if (!uhs) + cfg2 |= SD_NO_CHECK_WAIT_CRC_TO; + + rtsx_pci_init_cmd(pcr); + + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, 0x00); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_H, 0xFF, 0x02); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_L, + 0xFF, (u8)data->blocks); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_H, + 0xFF, (u8)(data->blocks >> 8)); + + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, IRQSTAT0, + DMA_DONE_INT, DMA_DONE_INT); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC3, + 0xFF, (u8)(data_len >> 24)); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC2, + 0xFF, (u8)(data_len >> 16)); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC1, + 0xFF, (u8)(data_len >> 8)); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC0, 0xFF, (u8)data_len); + if (read) { + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMACTL, + 0x03 | DMA_PACK_SIZE_MASK, + DMA_DIR_FROM_CARD | DMA_EN | DMA_512); + } else { + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMACTL, + 0x03 | DMA_PACK_SIZE_MASK, + DMA_DIR_TO_CARD | DMA_EN | DMA_512); + } + + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE, + 0x01, RING_BUFFER); + + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG2, 0xFF, cfg2); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_TRANSFER, 0xFF, + trans_mode | SD_TRANSFER_START); + rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, SD_TRANSFER, + SD_TRANSFER_END, SD_TRANSFER_END); + + rtsx_pci_send_cmd_no_wait(pcr); + + err = rtsx_pci_transfer_data(pcr, data->sg, data->sg_len, read, 10000); + if (err < 0) { + sd_clear_error(host); + return err; + } + + return 0; +} + +static inline void sd_enable_initial_mode(struct realtek_pci_sdmmc *host) +{ + rtsx_pci_write_register(host->pcr, SD_CFG1, + SD_CLK_DIVIDE_MASK, SD_CLK_DIVIDE_128); +} + +static inline void sd_disable_initial_mode(struct realtek_pci_sdmmc *host) +{ + rtsx_pci_write_register(host->pcr, SD_CFG1, + SD_CLK_DIVIDE_MASK, SD_CLK_DIVIDE_0); +} + +static void sd_normal_rw(struct realtek_pci_sdmmc *host, + struct mmc_request *mrq) +{ + struct mmc_command *cmd = mrq->cmd; + struct mmc_data *data = mrq->data; + u8 _cmd[5], *buf; + + _cmd[0] = 0x40 | (u8)cmd->opcode; + put_unaligned_be32(cmd->arg, (u32 *)(&_cmd[1])); + + buf = kzalloc(data->blksz, GFP_NOIO); + if (!buf) { + cmd->error = -ENOMEM; + return; + } + + if (data->flags & MMC_DATA_READ) { + if (host->initial_mode) + sd_disable_initial_mode(host); + + cmd->error = sd_read_data(host, _cmd, (u16)data->blksz, buf, + data->blksz, 200); + + if (host->initial_mode) + sd_enable_initial_mode(host); + + sg_copy_from_buffer(data->sg, data->sg_len, buf, data->blksz); + } else { + sg_copy_to_buffer(data->sg, data->sg_len, buf, data->blksz); + + cmd->error = sd_write_data(host, _cmd, (u16)data->blksz, buf, + data->blksz, 200); + } + + kfree(buf); +} + +static int sd_change_phase(struct realtek_pci_sdmmc *host, u8 sample_point) +{ + struct rtsx_pcr *pcr = host->pcr; + int err; + + dev_dbg(sdmmc_dev(host), "%s: sample_point = %d\n", + __func__, sample_point); + + rtsx_pci_init_cmd(pcr); + + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL, CHANGE_CLK, CHANGE_CLK); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPRX_CTL, 0x1F, sample_point); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK0_CTL, PHASE_NOT_RESET, 0); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK0_CTL, + PHASE_NOT_RESET, PHASE_NOT_RESET); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL, CHANGE_CLK, 0); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG1, SD_ASYNC_FIFO_NOT_RST, 0); + + err = rtsx_pci_send_cmd(pcr, 100); + if (err < 0) + return err; + + return 0; +} + +static u8 sd_search_final_phase(struct realtek_pci_sdmmc *host, u32 phase_map) +{ + struct timing_phase_path path[MAX_PHASE + 1]; + int i, j, cont_path_cnt; + int new_block, max_len, final_path_idx; + u8 final_phase = 0xFF; + + /* Parse phase_map, take it as a bit-ring */ + cont_path_cnt = 0; + new_block = 1; + j = 0; + for (i = 0; i < MAX_PHASE + 1; i++) { + if (phase_map & (1 << i)) { + if (new_block) { + new_block = 0; + j = cont_path_cnt++; + path[j].start = i; + path[j].end = i; + } else { + path[j].end = i; + } + } else { + new_block = 1; + if (cont_path_cnt) { + /* Calculate path length and middle point */ + int idx = cont_path_cnt - 1; + path[idx].len = + path[idx].end - path[idx].start + 1; + path[idx].mid = + path[idx].start + path[idx].len / 2; + } + } + } + + if (cont_path_cnt == 0) { + dev_dbg(sdmmc_dev(host), "No continuous phase path\n"); + goto finish; + } else { + /* Calculate last continuous path length and middle point */ + int idx = cont_path_cnt - 1; + path[idx].len = path[idx].end - path[idx].start + 1; + path[idx].mid = path[idx].start + path[idx].len / 2; + } + + /* Connect the first and last continuous paths if they are adjacent */ + if (!path[0].start && (path[cont_path_cnt - 1].end == MAX_PHASE)) { + /* Using negative index */ + path[0].start = path[cont_path_cnt - 1].start - MAX_PHASE - 1; + path[0].len += path[cont_path_cnt - 1].len; + path[0].mid = path[0].start + path[0].len / 2; + /* Convert negative middle point index to positive one */ + if (path[0].mid < 0) + path[0].mid += MAX_PHASE + 1; + cont_path_cnt--; + } + + /* Choose the longest continuous phase path */ + max_len = 0; + final_phase = 0; + final_path_idx = 0; + for (i = 0; i < cont_path_cnt; i++) { + if (path[i].len > max_len) { + max_len = path[i].len; + final_phase = (u8)path[i].mid; + final_path_idx = i; + } + + dev_dbg(sdmmc_dev(host), "path[%d].start = %d\n", + i, path[i].start); + dev_dbg(sdmmc_dev(host), "path[%d].end = %d\n", + i, path[i].end); + dev_dbg(sdmmc_dev(host), "path[%d].len = %d\n", + i, path[i].len); + dev_dbg(sdmmc_dev(host), "path[%d].mid = %d\n", + i, path[i].mid); + } + +finish: + dev_dbg(sdmmc_dev(host), "Final chosen phase: %d\n", final_phase); + return final_phase; +} + +static void sd_wait_data_idle(struct realtek_pci_sdmmc *host) +{ + int err, i; + u8 val = 0; + + for (i = 0; i < 100; i++) { + err = rtsx_pci_read_register(host->pcr, SD_DATA_STATE, &val); + if (val & SD_DATA_IDLE) + return; + + udelay(100); + } +} + +static int sd_tuning_rx_cmd(struct realtek_pci_sdmmc *host, + u8 opcode, u8 sample_point) +{ + int err; + u8 cmd[5] = {0}; + + err = sd_change_phase(host, sample_point); + if (err < 0) + return err; + + cmd[0] = 0x40 | opcode; + err = sd_read_data(host, cmd, 0x40, NULL, 0, 100); + if (err < 0) { + /* Wait till SD DATA IDLE */ + sd_wait_data_idle(host); + sd_clear_error(host); + return err; + } + + return 0; +} + +static int sd_tuning_phase(struct realtek_pci_sdmmc *host, + u8 opcode, u32 *phase_map) +{ + int err, i; + u32 raw_phase_map = 0; + + for (i = MAX_PHASE; i >= 0; i--) { + err = sd_tuning_rx_cmd(host, opcode, (u8)i); + if (err == 0) + raw_phase_map |= 1 << i; + } + + if (phase_map) + *phase_map = raw_phase_map; + + return 0; +} + +static int sd_tuning_rx(struct realtek_pci_sdmmc *host, u8 opcode) +{ + int err, i; + u32 raw_phase_map[RX_TUNING_CNT] = {0}, phase_map; + u8 final_phase; + + for (i = 0; i < RX_TUNING_CNT; i++) { + err = sd_tuning_phase(host, opcode, &(raw_phase_map[i])); + if (err < 0) + return err; + + if (raw_phase_map[i] == 0) + break; + } + + phase_map = 0xFFFFFFFF; + for (i = 0; i < RX_TUNING_CNT; i++) { + dev_dbg(sdmmc_dev(host), "RX raw_phase_map[%d] = 0x%08x\n", + i, raw_phase_map[i]); + phase_map &= raw_phase_map[i]; + } + dev_dbg(sdmmc_dev(host), "RX phase_map = 0x%08x\n", phase_map); + + if (phase_map) { + final_phase = sd_search_final_phase(host, phase_map); + if (final_phase == 0xFF) + return -EINVAL; + + err = sd_change_phase(host, final_phase); + if (err < 0) + return err; + } else { + return -EINVAL; + } + + return 0; +} + +static void sdmmc_request(struct mmc_host *mmc, struct mmc_request *mrq) +{ + struct realtek_pci_sdmmc *host = mmc_priv(mmc); + struct rtsx_pcr *pcr = host->pcr; + struct mmc_command *cmd = mrq->cmd; + struct mmc_data *data = mrq->data; + unsigned int data_size = 0; + int err; + + if (host->eject) { + cmd->error = -ENOMEDIUM; + goto finish; + } + + err = rtsx_pci_card_exclusive_check(host->pcr, RTSX_SD_CARD); + if (err) { + cmd->error = err; + goto finish; + } + + mutex_lock(&pcr->pcr_mutex); + + rtsx_pci_start_run(pcr); + + rtsx_pci_switch_clock(pcr, host->clock, host->ssc_depth, + host->initial_mode, host->double_clk, host->vpclk); + rtsx_pci_write_register(pcr, CARD_SELECT, 0x07, SD_MOD_SEL); + rtsx_pci_write_register(pcr, CARD_SHARE_MODE, + CARD_SHARE_MASK, CARD_SHARE_48_SD); + + mutex_lock(&host->host_mutex); + host->mrq = mrq; + mutex_unlock(&host->host_mutex); + + if (mrq->data) + data_size = data->blocks * data->blksz; + + if (!data_size || mmc_op_multi(cmd->opcode) || + (cmd->opcode == MMC_READ_SINGLE_BLOCK) || + (cmd->opcode == MMC_WRITE_BLOCK)) { + sd_send_cmd_get_rsp(host, cmd); + + if (!cmd->error && data_size) { + sd_rw_multi(host, mrq); + + if (mmc_op_multi(cmd->opcode) && mrq->stop) + sd_send_cmd_get_rsp(host, mrq->stop); + } + } else { + sd_normal_rw(host, mrq); + } + + if (mrq->data) { + if (cmd->error || data->error) + data->bytes_xfered = 0; + else + data->bytes_xfered = data->blocks * data->blksz; + } + + mutex_unlock(&pcr->pcr_mutex); + +finish: + if (cmd->error) + dev_dbg(sdmmc_dev(host), "cmd->error = %d\n", cmd->error); + + mutex_lock(&host->host_mutex); + host->mrq = NULL; + mutex_unlock(&host->host_mutex); + + mmc_request_done(mmc, mrq); +} + +static int sd_set_bus_width(struct realtek_pci_sdmmc *host, + unsigned char bus_width) +{ + int err = 0; + u8 width[] = { + [MMC_BUS_WIDTH_1] = SD_BUS_WIDTH_1BIT, + [MMC_BUS_WIDTH_4] = SD_BUS_WIDTH_4BIT, + [MMC_BUS_WIDTH_8] = SD_BUS_WIDTH_8BIT, + }; + + if (bus_width <= MMC_BUS_WIDTH_8) + err = rtsx_pci_write_register(host->pcr, SD_CFG1, + 0x03, width[bus_width]); + + return err; +} + +static int sd_power_on(struct realtek_pci_sdmmc *host) +{ + struct rtsx_pcr *pcr = host->pcr; + int err; + + rtsx_pci_init_cmd(pcr); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_SELECT, 0x07, SD_MOD_SEL); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_SHARE_MODE, + CARD_SHARE_MASK, CARD_SHARE_48_SD); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_EN, + SD_CLK_EN, SD_CLK_EN); + err = rtsx_pci_send_cmd(pcr, 100); + if (err < 0) + return err; + + err = rtsx_pci_card_pull_ctl_enable(pcr, RTSX_SD_CARD); + if (err < 0) + return err; + + err = rtsx_pci_card_power_on(pcr, RTSX_SD_CARD); + if (err < 0) + return err; + + err = rtsx_pci_write_register(pcr, CARD_OE, SD_OUTPUT_EN, SD_OUTPUT_EN); + if (err < 0) + return err; + + return 0; +} + +static int sd_power_off(struct realtek_pci_sdmmc *host) +{ + struct rtsx_pcr *pcr = host->pcr; + int err; + + rtsx_pci_init_cmd(pcr); + + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_EN, SD_CLK_EN, 0); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_OE, SD_OUTPUT_EN, 0); + + err = rtsx_pci_send_cmd(pcr, 100); + if (err < 0) + return err; + + err = rtsx_pci_card_power_off(pcr, RTSX_SD_CARD); + if (err < 0) + return err; + + return rtsx_pci_card_pull_ctl_disable(pcr, RTSX_SD_CARD); +} + +static int sd_set_power_mode(struct realtek_pci_sdmmc *host, + unsigned char power_mode) +{ + int err; + + if (power_mode == MMC_POWER_OFF) + err = sd_power_off(host); + else + err = sd_power_on(host); + + return err; +} + +static int sd_set_timing(struct realtek_pci_sdmmc *host, + unsigned char timing, bool *ddr_mode) +{ + struct rtsx_pcr *pcr = host->pcr; + int err = 0; + + *ddr_mode = false; + + rtsx_pci_init_cmd(pcr); + + switch (timing) { + case MMC_TIMING_UHS_SDR104: + case MMC_TIMING_UHS_SDR50: + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG1, + 0x0C | SD_ASYNC_FIFO_NOT_RST, + SD_30_MODE | SD_ASYNC_FIFO_NOT_RST); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL, + CLK_LOW_FREQ, CLK_LOW_FREQ); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF, + CRC_VAR_CLK0 | SD30_FIX_CLK | SAMPLE_VAR_CLK1); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL, CLK_LOW_FREQ, 0); + break; + + case MMC_TIMING_UHS_DDR50: + *ddr_mode = true; + + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG1, + 0x0C | SD_ASYNC_FIFO_NOT_RST, + SD_DDR_MODE | SD_ASYNC_FIFO_NOT_RST); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL, + CLK_LOW_FREQ, CLK_LOW_FREQ); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF, + CRC_VAR_CLK0 | SD30_FIX_CLK | SAMPLE_VAR_CLK1); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL, CLK_LOW_FREQ, 0); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_PUSH_POINT_CTL, + DDR_VAR_TX_CMD_DAT, DDR_VAR_TX_CMD_DAT); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_SAMPLE_POINT_CTL, + DDR_VAR_RX_DAT | DDR_VAR_RX_CMD, + DDR_VAR_RX_DAT | DDR_VAR_RX_CMD); + break; + + case MMC_TIMING_MMC_HS: + case MMC_TIMING_SD_HS: + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG1, + 0x0C, SD_20_MODE); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL, + CLK_LOW_FREQ, CLK_LOW_FREQ); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF, + CRC_FIX_CLK | SD30_VAR_CLK0 | SAMPLE_VAR_CLK1); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL, CLK_LOW_FREQ, 0); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_PUSH_POINT_CTL, + SD20_TX_SEL_MASK, SD20_TX_14_AHEAD); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_SAMPLE_POINT_CTL, + SD20_RX_SEL_MASK, SD20_RX_14_DELAY); + break; + + default: + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, + SD_CFG1, 0x0C, SD_20_MODE); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL, + CLK_LOW_FREQ, CLK_LOW_FREQ); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF, + CRC_FIX_CLK | SD30_VAR_CLK0 | SAMPLE_VAR_CLK1); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL, CLK_LOW_FREQ, 0); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, + SD_PUSH_POINT_CTL, 0xFF, 0); + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_SAMPLE_POINT_CTL, + SD20_RX_SEL_MASK, SD20_RX_POS_EDGE); + break; + } + + err = rtsx_pci_send_cmd(pcr, 100); + + return err; +} + +static void sdmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) +{ + struct realtek_pci_sdmmc *host = mmc_priv(mmc); + struct rtsx_pcr *pcr = host->pcr; + + if (host->eject) + return; + + if (rtsx_pci_card_exclusive_check(host->pcr, RTSX_SD_CARD)) + return; + + mutex_lock(&pcr->pcr_mutex); + + rtsx_pci_start_run(pcr); + + sd_set_bus_width(host, ios->bus_width); + sd_set_power_mode(host, ios->power_mode); + sd_set_timing(host, ios->timing, &host->ddr_mode); + + host->vpclk = false; + host->double_clk = true; + + switch (ios->timing) { + case MMC_TIMING_UHS_SDR104: + case MMC_TIMING_UHS_SDR50: + host->ssc_depth = RTSX_SSC_DEPTH_2M; + host->vpclk = true; + host->double_clk = false; + break; + case MMC_TIMING_UHS_DDR50: + case MMC_TIMING_UHS_SDR25: + host->ssc_depth = RTSX_SSC_DEPTH_1M; + break; + default: + host->ssc_depth = RTSX_SSC_DEPTH_500K; + break; + } + + host->initial_mode = (ios->clock <= 1000000) ? true : false; + + host->clock = ios->clock; + rtsx_pci_switch_clock(pcr, ios->clock, host->ssc_depth, + host->initial_mode, host->double_clk, host->vpclk); + + mutex_unlock(&pcr->pcr_mutex); +} + +static int sdmmc_get_ro(struct mmc_host *mmc) +{ + struct realtek_pci_sdmmc *host = mmc_priv(mmc); + struct rtsx_pcr *pcr = host->pcr; + int ro = 0; + u32 val; + + if (host->eject) + return -ENOMEDIUM; + + mutex_lock(&pcr->pcr_mutex); + + rtsx_pci_start_run(pcr); + + /* Check SD mechanical write-protect switch */ + val = rtsx_pci_readl(pcr, RTSX_BIPR); + dev_dbg(sdmmc_dev(host), "%s: RTSX_BIPR = 0x%08x\n", __func__, val); + if (val & SD_WRITE_PROTECT) + ro = 1; + + mutex_unlock(&pcr->pcr_mutex); + + return ro; +} + +static int sdmmc_get_cd(struct mmc_host *mmc) +{ + struct realtek_pci_sdmmc *host = mmc_priv(mmc); + struct rtsx_pcr *pcr = host->pcr; + int cd = 0; + u32 val; + + if (host->eject) + return -ENOMEDIUM; + + mutex_lock(&pcr->pcr_mutex); + + rtsx_pci_start_run(pcr); + + /* Check SD card detect */ + val = rtsx_pci_card_exist(pcr); + dev_dbg(sdmmc_dev(host), "%s: RTSX_BIPR = 0x%08x\n", __func__, val); + if (val & SD_EXIST) + cd = 1; + + mutex_unlock(&pcr->pcr_mutex); + + return cd; +} + +static int sd_wait_voltage_stable_1(struct realtek_pci_sdmmc *host) +{ + struct rtsx_pcr *pcr = host->pcr; + int err; + u8 stat; + + /* Reference to Signal Voltage Switch Sequence in SD spec. + * Wait for a period of time so that the card can drive SD_CMD and + * SD_DAT[3:0] to low after sending back CMD11 response. + */ + mdelay(1); + + /* SD_CMD, SD_DAT[3:0] should be driven to low by card; + * If either one of SD_CMD,SD_DAT[3:0] is not low, + * abort the voltage switch sequence; + */ + err = rtsx_pci_read_register(pcr, SD_BUS_STAT, &stat); + if (err < 0) + return err; + + if (stat & (SD_CMD_STATUS | SD_DAT3_STATUS | SD_DAT2_STATUS | + SD_DAT1_STATUS | SD_DAT0_STATUS)) + return -EINVAL; + + /* Stop toggle SD clock */ + err = rtsx_pci_write_register(pcr, SD_BUS_STAT, + 0xFF, SD_CLK_FORCE_STOP); + if (err < 0) + return err; + + return 0; +} + +static int sd_wait_voltage_stable_2(struct realtek_pci_sdmmc *host) +{ + struct rtsx_pcr *pcr = host->pcr; + int err; + u8 stat, mask, val; + + /* Wait 1.8V output of voltage regulator in card stable */ + msleep(50); + + /* Toggle SD clock again */ + err = rtsx_pci_write_register(pcr, SD_BUS_STAT, 0xFF, SD_CLK_TOGGLE_EN); + if (err < 0) + return err; + + /* Wait for a period of time so that the card can drive + * SD_DAT[3:0] to high at 1.8V + */ + msleep(20); + + /* SD_CMD, SD_DAT[3:0] should be pulled high by host */ + err = rtsx_pci_read_register(pcr, SD_BUS_STAT, &stat); + if (err < 0) + return err; + + mask = SD_CMD_STATUS | SD_DAT3_STATUS | SD_DAT2_STATUS | + SD_DAT1_STATUS | SD_DAT0_STATUS; + val = SD_CMD_STATUS | SD_DAT3_STATUS | SD_DAT2_STATUS | + SD_DAT1_STATUS | SD_DAT0_STATUS; + if ((stat & mask) != val) { + dev_dbg(sdmmc_dev(host), + "%s: SD_BUS_STAT = 0x%x\n", __func__, stat); + rtsx_pci_write_register(pcr, SD_BUS_STAT, + SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, 0); + rtsx_pci_write_register(pcr, CARD_CLK_EN, 0xFF, 0); + return -EINVAL; + } + + return 0; +} + +static int sdmmc_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios) +{ + struct realtek_pci_sdmmc *host = mmc_priv(mmc); + struct rtsx_pcr *pcr = host->pcr; + int err = 0; + u8 voltage; + + dev_dbg(sdmmc_dev(host), "%s: signal_voltage = %d\n", + __func__, ios->signal_voltage); + + if (host->eject) + return -ENOMEDIUM; + + err = rtsx_pci_card_exclusive_check(host->pcr, RTSX_SD_CARD); + if (err) + return err; + + mutex_lock(&pcr->pcr_mutex); + + rtsx_pci_start_run(pcr); + + if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330) + voltage = OUTPUT_3V3; + else + voltage = OUTPUT_1V8; + + if (voltage == OUTPUT_1V8) { + err = sd_wait_voltage_stable_1(host); + if (err < 0) + goto out; + } + + err = rtsx_pci_switch_output_voltage(pcr, voltage); + if (err < 0) + goto out; + + if (voltage == OUTPUT_1V8) { + err = sd_wait_voltage_stable_2(host); + if (err < 0) + goto out; + } + + /* Stop toggle SD clock in idle */ + err = rtsx_pci_write_register(pcr, SD_BUS_STAT, + SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, 0); + +out: + mutex_unlock(&pcr->pcr_mutex); + + return err; +} + +static int sdmmc_execute_tuning(struct mmc_host *mmc, u32 opcode) +{ + struct realtek_pci_sdmmc *host = mmc_priv(mmc); + struct rtsx_pcr *pcr = host->pcr; + int err = 0; + + if (host->eject) + return -ENOMEDIUM; + + err = rtsx_pci_card_exclusive_check(host->pcr, RTSX_SD_CARD); + if (err) + return err; + + mutex_lock(&pcr->pcr_mutex); + + rtsx_pci_start_run(pcr); + + if (!host->ddr_mode) + err = sd_tuning_rx(host, MMC_SEND_TUNING_BLOCK); + + mutex_unlock(&pcr->pcr_mutex); + + return err; +} + +static const struct mmc_host_ops realtek_pci_sdmmc_ops = { + .request = sdmmc_request, + .set_ios = sdmmc_set_ios, + .get_ro = sdmmc_get_ro, + .get_cd = sdmmc_get_cd, + .start_signal_voltage_switch = sdmmc_switch_voltage, + .execute_tuning = sdmmc_execute_tuning, +}; + +#ifdef CONFIG_PM +static int rtsx_pci_sdmmc_suspend(struct platform_device *pdev, + pm_message_t state) +{ + struct realtek_pci_sdmmc *host = platform_get_drvdata(pdev); + struct mmc_host *mmc = host->mmc; + int err; + + dev_dbg(sdmmc_dev(host), "--> %s\n", __func__); + + err = mmc_suspend_host(mmc); + if (err) + return err; + + return 0; +} + +static int rtsx_pci_sdmmc_resume(struct platform_device *pdev) +{ + struct realtek_pci_sdmmc *host = platform_get_drvdata(pdev); + struct mmc_host *mmc = host->mmc; + + dev_dbg(sdmmc_dev(host), "--> %s\n", __func__); + + return mmc_resume_host(mmc); +} +#else /* CONFIG_PM */ +#define rtsx_pci_sdmmc_suspend NULL +#define rtsx_pci_sdmmc_resume NULL +#endif /* CONFIG_PM */ + +static void init_extra_caps(struct realtek_pci_sdmmc *host) +{ + struct mmc_host *mmc = host->mmc; + struct rtsx_pcr *pcr = host->pcr; + + dev_dbg(sdmmc_dev(host), "pcr->extra_caps = 0x%x\n", pcr->extra_caps); + + if (pcr->extra_caps & EXTRA_CAPS_SD_SDR50) + mmc->caps |= MMC_CAP_UHS_SDR50; + if (pcr->extra_caps & EXTRA_CAPS_SD_SDR104) + mmc->caps |= MMC_CAP_UHS_SDR104; + if (pcr->extra_caps & EXTRA_CAPS_SD_DDR50) + mmc->caps |= MMC_CAP_UHS_DDR50; + if (pcr->extra_caps & EXTRA_CAPS_MMC_HSDDR) + mmc->caps |= MMC_CAP_1_8V_DDR; + if (pcr->extra_caps & EXTRA_CAPS_MMC_8BIT) + mmc->caps |= MMC_CAP_8_BIT_DATA; +} + +static void realtek_init_host(struct realtek_pci_sdmmc *host) +{ + struct mmc_host *mmc = host->mmc; + + mmc->f_min = 250000; + mmc->f_max = 208000000; + mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; + mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED | + MMC_CAP_MMC_HIGHSPEED | MMC_CAP_BUS_WIDTH_TEST | + MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25; + mmc->max_current_330 = 400; + mmc->max_current_180 = 800; + mmc->ops = &realtek_pci_sdmmc_ops; + + init_extra_caps(host); + + mmc->max_segs = 256; + mmc->max_seg_size = 65536; + mmc->max_blk_size = 512; + mmc->max_blk_count = 65535; + mmc->max_req_size = 524288; +} + +static void rtsx_pci_sdmmc_card_event(struct platform_device *pdev) +{ + struct realtek_pci_sdmmc *host = platform_get_drvdata(pdev); + + mmc_detect_change(host->mmc, 0); +} + +static int rtsx_pci_sdmmc_drv_probe(struct platform_device *pdev) +{ + struct mmc_host *mmc; + struct realtek_pci_sdmmc *host; + struct rtsx_pcr *pcr; + struct pcr_handle *handle = pdev->dev.platform_data; + + if (!handle) + return -ENXIO; + + pcr = handle->pcr; + if (!pcr) + return -ENXIO; + + dev_dbg(&(pdev->dev), ": Realtek PCI-E SDMMC controller found\n"); + + mmc = mmc_alloc_host(sizeof(*host), &pdev->dev); + if (!mmc) + return -ENOMEM; + + host = mmc_priv(mmc); + host->pcr = pcr; + host->mmc = mmc; + host->pdev = pdev; + platform_set_drvdata(pdev, host); + pcr->slots[RTSX_SD_CARD].p_dev = pdev; + pcr->slots[RTSX_SD_CARD].card_event = rtsx_pci_sdmmc_card_event; + + mutex_init(&host->host_mutex); + + realtek_init_host(host); + + mmc_add_host(mmc); + + return 0; +} + +static int rtsx_pci_sdmmc_drv_remove(struct platform_device *pdev) +{ + struct realtek_pci_sdmmc *host = platform_get_drvdata(pdev); + struct rtsx_pcr *pcr; + struct mmc_host *mmc; + + if (!host) + return 0; + + pcr = host->pcr; + pcr->slots[RTSX_SD_CARD].p_dev = NULL; + pcr->slots[RTSX_SD_CARD].card_event = NULL; + mmc = host->mmc; + host->eject = true; + + mutex_lock(&host->host_mutex); + if (host->mrq) { + dev_dbg(&(pdev->dev), + "%s: Controller removed during transfer\n", + mmc_hostname(mmc)); + + rtsx_pci_complete_unfinished_transfer(pcr); + + host->mrq->cmd->error = -ENOMEDIUM; + if (host->mrq->stop) + host->mrq->stop->error = -ENOMEDIUM; + mmc_request_done(mmc, host->mrq); + } + mutex_unlock(&host->host_mutex); + + mmc_remove_host(mmc); + mmc_free_host(mmc); + + platform_set_drvdata(pdev, NULL); + + dev_dbg(&(pdev->dev), + ": Realtek PCI-E SDMMC controller has been removed\n"); + + return 0; +} + +static struct platform_device_id rtsx_pci_sdmmc_ids[] = { + { + .name = DRV_NAME_RTSX_PCI_SDMMC, + }, { + /* sentinel */ + } +}; +MODULE_DEVICE_TABLE(platform, rtsx_pci_sdmmc_ids); + +static struct platform_driver rtsx_pci_sdmmc_driver = { + .probe = rtsx_pci_sdmmc_drv_probe, + .remove = rtsx_pci_sdmmc_drv_remove, + .id_table = rtsx_pci_sdmmc_ids, + .suspend = rtsx_pci_sdmmc_suspend, + .resume = rtsx_pci_sdmmc_resume, + .driver = { + .owner = THIS_MODULE, + .name = DRV_NAME_RTSX_PCI_SDMMC, + }, +}; +module_platform_driver(rtsx_pci_sdmmc_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Wei WANG <wei_wang@realsil.com.cn>"); +MODULE_DESCRIPTION("Realtek PCI-E SD/MMC Card Host Driver"); diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c index 4638ddab97b8..63fb265e0da6 100644 --- a/drivers/mmc/host/s3cmci.c +++ b/drivers/mmc/host/s3cmci.c @@ -1540,7 +1540,7 @@ static inline void s3cmci_debugfs_remove(struct s3cmci_host *host) { } #endif /* CONFIG_DEBUG_FS */ -static int __devinit s3cmci_probe(struct platform_device *pdev) +static int s3cmci_probe(struct platform_device *pdev) { struct s3cmci_host *host; struct mmc_host *mmc; @@ -1819,7 +1819,7 @@ static void s3cmci_shutdown(struct platform_device *pdev) clk_disable(host->clk); } -static int __devexit s3cmci_remove(struct platform_device *pdev) +static int s3cmci_remove(struct platform_device *pdev) { struct mmc_host *mmc = platform_get_drvdata(pdev); struct s3cmci_host *host = mmc_priv(mmc); @@ -1906,7 +1906,7 @@ static struct platform_driver s3cmci_driver = { }, .id_table = s3cmci_driver_ids, .probe = s3cmci_probe, - .remove = __devexit_p(s3cmci_remove), + .remove = s3cmci_remove, .shutdown = s3cmci_shutdown, }; diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c new file mode 100644 index 000000000000..2592dddbd965 --- /dev/null +++ b/drivers/mmc/host/sdhci-acpi.c @@ -0,0 +1,312 @@ +/* + * Secure Digital Host Controller Interface ACPI driver. + * + * Copyright (c) 2012, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + +#include <linux/init.h> +#include <linux/export.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/platform_device.h> +#include <linux/ioport.h> +#include <linux/io.h> +#include <linux/dma-mapping.h> +#include <linux/compiler.h> +#include <linux/stddef.h> +#include <linux/bitops.h> +#include <linux/types.h> +#include <linux/err.h> +#include <linux/interrupt.h> +#include <linux/acpi.h> +#include <linux/pm.h> +#include <linux/pm_runtime.h> + +#include <linux/mmc/host.h> +#include <linux/mmc/pm.h> +#include <linux/mmc/sdhci.h> + +#include "sdhci.h" + +enum { + SDHCI_ACPI_SD_CD = BIT(0), + SDHCI_ACPI_RUNTIME_PM = BIT(1), +}; + +struct sdhci_acpi_chip { + const struct sdhci_ops *ops; + unsigned int quirks; + unsigned int quirks2; + unsigned long caps; + unsigned int caps2; + mmc_pm_flag_t pm_caps; +}; + +struct sdhci_acpi_slot { + const struct sdhci_acpi_chip *chip; + unsigned int quirks; + unsigned int quirks2; + unsigned long caps; + unsigned int caps2; + mmc_pm_flag_t pm_caps; + unsigned int flags; +}; + +struct sdhci_acpi_host { + struct sdhci_host *host; + const struct sdhci_acpi_slot *slot; + struct platform_device *pdev; + bool use_runtime_pm; +}; + +static inline bool sdhci_acpi_flag(struct sdhci_acpi_host *c, unsigned int flag) +{ + return c->slot && (c->slot->flags & flag); +} + +static int sdhci_acpi_enable_dma(struct sdhci_host *host) +{ + return 0; +} + +static const struct sdhci_ops sdhci_acpi_ops_dflt = { + .enable_dma = sdhci_acpi_enable_dma, +}; + +static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = { + .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON, + .caps = MMC_CAP_NONREMOVABLE | MMC_CAP_POWER_OFF_CARD, + .flags = SDHCI_ACPI_RUNTIME_PM, + .pm_caps = MMC_PM_KEEP_POWER, +}; + +static const struct acpi_device_id sdhci_acpi_ids[] = { + { "INT33C6", (kernel_ulong_t)&sdhci_acpi_slot_int_sdio }, + { "PNP0D40" }, + { }, +}; +MODULE_DEVICE_TABLE(acpi, sdhci_acpi_ids); + +static const struct sdhci_acpi_slot *sdhci_acpi_get_slot(const char *hid) +{ + const struct acpi_device_id *id; + + for (id = sdhci_acpi_ids; id->id[0]; id++) + if (!strcmp(id->id, hid)) + return (const struct sdhci_acpi_slot *)id->driver_data; + return NULL; +} + +static int sdhci_acpi_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + acpi_handle handle = ACPI_HANDLE(dev); + struct acpi_device *device; + struct sdhci_acpi_host *c; + struct sdhci_host *host; + struct resource *iomem; + resource_size_t len; + const char *hid; + int err; + + if (acpi_bus_get_device(handle, &device)) + return -ENODEV; + + if (acpi_bus_get_status(device) || !device->status.present) + return -ENODEV; + + hid = acpi_device_hid(device); + + iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!iomem) + return -ENOMEM; + + len = resource_size(iomem); + if (len < 0x100) + dev_err(dev, "Invalid iomem size!\n"); + + if (!devm_request_mem_region(dev, iomem->start, len, dev_name(dev))) + return -ENOMEM; + + host = sdhci_alloc_host(dev, sizeof(struct sdhci_acpi_host)); + if (IS_ERR(host)) + return PTR_ERR(host); + + c = sdhci_priv(host); + c->host = host; + c->slot = sdhci_acpi_get_slot(hid); + c->pdev = pdev; + c->use_runtime_pm = sdhci_acpi_flag(c, SDHCI_ACPI_RUNTIME_PM); + + platform_set_drvdata(pdev, c); + + host->hw_name = "ACPI"; + host->ops = &sdhci_acpi_ops_dflt; + host->irq = platform_get_irq(pdev, 0); + + host->ioaddr = devm_ioremap_nocache(dev, iomem->start, + resource_size(iomem)); + if (host->ioaddr == NULL) { + err = -ENOMEM; + goto err_free; + } + + if (!dev->dma_mask) { + u64 dma_mask; + + if (sdhci_readl(host, SDHCI_CAPABILITIES) & SDHCI_CAN_64BIT) { + /* 64-bit DMA is not supported at present */ + dma_mask = DMA_BIT_MASK(32); + } else { + dma_mask = DMA_BIT_MASK(32); + } + + dev->dma_mask = &dev->coherent_dma_mask; + dev->coherent_dma_mask = dma_mask; + } + + if (c->slot) { + if (c->slot->chip) { + host->ops = c->slot->chip->ops; + host->quirks |= c->slot->chip->quirks; + host->quirks2 |= c->slot->chip->quirks2; + host->mmc->caps |= c->slot->chip->caps; + host->mmc->caps2 |= c->slot->chip->caps2; + host->mmc->pm_caps |= c->slot->chip->pm_caps; + } + host->quirks |= c->slot->quirks; + host->quirks2 |= c->slot->quirks2; + host->mmc->caps |= c->slot->caps; + host->mmc->caps2 |= c->slot->caps2; + host->mmc->pm_caps |= c->slot->pm_caps; + } + + err = sdhci_add_host(host); + if (err) + goto err_free; + + if (c->use_runtime_pm) { + pm_suspend_ignore_children(dev, 1); + pm_runtime_set_autosuspend_delay(dev, 50); + pm_runtime_use_autosuspend(dev); + pm_runtime_enable(dev); + } + + return 0; + +err_free: + platform_set_drvdata(pdev, NULL); + sdhci_free_host(c->host); + return err; +} + +static int sdhci_acpi_remove(struct platform_device *pdev) +{ + struct sdhci_acpi_host *c = platform_get_drvdata(pdev); + struct device *dev = &pdev->dev; + int dead; + + if (c->use_runtime_pm) { + pm_runtime_get_sync(dev); + pm_runtime_disable(dev); + pm_runtime_put_noidle(dev); + } + + dead = (sdhci_readl(c->host, SDHCI_INT_STATUS) == ~0); + sdhci_remove_host(c->host, dead); + platform_set_drvdata(pdev, NULL); + sdhci_free_host(c->host); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP + +static int sdhci_acpi_suspend(struct device *dev) +{ + struct sdhci_acpi_host *c = dev_get_drvdata(dev); + + return sdhci_suspend_host(c->host); +} + +static int sdhci_acpi_resume(struct device *dev) +{ + struct sdhci_acpi_host *c = dev_get_drvdata(dev); + + return sdhci_resume_host(c->host); +} + +#else + +#define sdhci_acpi_suspend NULL +#define sdhci_acpi_resume NULL + +#endif + +#ifdef CONFIG_PM_RUNTIME + +static int sdhci_acpi_runtime_suspend(struct device *dev) +{ + struct sdhci_acpi_host *c = dev_get_drvdata(dev); + + return sdhci_runtime_suspend_host(c->host); +} + +static int sdhci_acpi_runtime_resume(struct device *dev) +{ + struct sdhci_acpi_host *c = dev_get_drvdata(dev); + + return sdhci_runtime_resume_host(c->host); +} + +static int sdhci_acpi_runtime_idle(struct device *dev) +{ + return 0; +} + +#else + +#define sdhci_acpi_runtime_suspend NULL +#define sdhci_acpi_runtime_resume NULL +#define sdhci_acpi_runtime_idle NULL + +#endif + +static const struct dev_pm_ops sdhci_acpi_pm_ops = { + .suspend = sdhci_acpi_suspend, + .resume = sdhci_acpi_resume, + .runtime_suspend = sdhci_acpi_runtime_suspend, + .runtime_resume = sdhci_acpi_runtime_resume, + .runtime_idle = sdhci_acpi_runtime_idle, +}; + +static struct platform_driver sdhci_acpi_driver = { + .driver = { + .name = "sdhci-acpi", + .owner = THIS_MODULE, + .acpi_match_table = sdhci_acpi_ids, + .pm = &sdhci_acpi_pm_ops, + }, + .probe = sdhci_acpi_probe, + .remove = sdhci_acpi_remove, +}; + +module_platform_driver(sdhci_acpi_driver); + +MODULE_DESCRIPTION("Secure Digital Host Controller Interface ACPI driver"); +MODULE_AUTHOR("Adrian Hunter"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/mmc/host/sdhci-bcm2835.c b/drivers/mmc/host/sdhci-bcm2835.c new file mode 100644 index 000000000000..8ffea05152c6 --- /dev/null +++ b/drivers/mmc/host/sdhci-bcm2835.c @@ -0,0 +1,210 @@ +/* + * BCM2835 SDHCI + * Copyright (C) 2012 Stephen Warren + * Based on U-Boot's MMC driver for the BCM2835 by Oleksandr Tymoshenko & me + * Portions of the code there were obviously based on the Linux kernel at: + * git://github.com/raspberrypi/linux.git rpi-3.6.y + * commit f5b930b "Main bcm2708 linux port" signed-off-by Dom Cobley. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/delay.h> +#include <linux/module.h> +#include <linux/mmc/host.h> +#include "sdhci-pltfm.h" + +/* + * 400KHz is max freq for card ID etc. Use that as min card clock. We need to + * know the min to enable static calculation of max BCM2835_SDHCI_WRITE_DELAY. + */ +#define MIN_FREQ 400000 + +/* + * The Arasan has a bugette whereby it may lose the content of successive + * writes to registers that are within two SD-card clock cycles of each other + * (a clock domain crossing problem). It seems, however, that the data + * register does not have this problem, which is just as well - otherwise we'd + * have to nobble the DMA engine too. + * + * This should probably be dynamically calculated based on the actual card + * frequency. However, this is the longest we'll have to wait, and doesn't + * seem to slow access down too much, so the added complexity doesn't seem + * worth it for now. + * + * 1/MIN_FREQ is (max) time per tick of eMMC clock. + * 2/MIN_FREQ is time for two ticks. + * Multiply by 1000000 to get uS per two ticks. + * *1000000 for uSecs. + * +1 for hack rounding. + */ +#define BCM2835_SDHCI_WRITE_DELAY (((2 * 1000000) / MIN_FREQ) + 1) + +struct bcm2835_sdhci { + u32 shadow; +}; + +static void bcm2835_sdhci_writel(struct sdhci_host *host, u32 val, int reg) +{ + writel(val, host->ioaddr + reg); + + udelay(BCM2835_SDHCI_WRITE_DELAY); +} + +static inline u32 bcm2835_sdhci_readl(struct sdhci_host *host, int reg) +{ + u32 val = readl(host->ioaddr + reg); + + if (reg == SDHCI_CAPABILITIES) + val |= SDHCI_CAN_VDD_330; + + return val; +} + +static void bcm2835_sdhci_writew(struct sdhci_host *host, u16 val, int reg) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct bcm2835_sdhci *bcm2835_host = pltfm_host->priv; + u32 oldval = (reg == SDHCI_COMMAND) ? bcm2835_host->shadow : + bcm2835_sdhci_readl(host, reg & ~3); + u32 word_num = (reg >> 1) & 1; + u32 word_shift = word_num * 16; + u32 mask = 0xffff << word_shift; + u32 newval = (oldval & ~mask) | (val << word_shift); + + if (reg == SDHCI_TRANSFER_MODE) + bcm2835_host->shadow = newval; + else + bcm2835_sdhci_writel(host, newval, reg & ~3); +} + +static u16 bcm2835_sdhci_readw(struct sdhci_host *host, int reg) +{ + u32 val = bcm2835_sdhci_readl(host, (reg & ~3)); + u32 word_num = (reg >> 1) & 1; + u32 word_shift = word_num * 16; + u32 word = (val >> word_shift) & 0xffff; + + return word; +} + +static void bcm2835_sdhci_writeb(struct sdhci_host *host, u8 val, int reg) +{ + u32 oldval = bcm2835_sdhci_readl(host, reg & ~3); + u32 byte_num = reg & 3; + u32 byte_shift = byte_num * 8; + u32 mask = 0xff << byte_shift; + u32 newval = (oldval & ~mask) | (val << byte_shift); + + bcm2835_sdhci_writel(host, newval, reg & ~3); +} + +static u8 bcm2835_sdhci_readb(struct sdhci_host *host, int reg) +{ + u32 val = bcm2835_sdhci_readl(host, (reg & ~3)); + u32 byte_num = reg & 3; + u32 byte_shift = byte_num * 8; + u32 byte = (val >> byte_shift) & 0xff; + + return byte; +} + +unsigned int bcm2835_sdhci_get_min_clock(struct sdhci_host *host) +{ + return MIN_FREQ; +} + +static struct sdhci_ops bcm2835_sdhci_ops = { + .write_l = bcm2835_sdhci_writel, + .write_w = bcm2835_sdhci_writew, + .write_b = bcm2835_sdhci_writeb, + .read_l = bcm2835_sdhci_readl, + .read_w = bcm2835_sdhci_readw, + .read_b = bcm2835_sdhci_readb, + .get_max_clock = sdhci_pltfm_clk_get_max_clock, + .get_min_clock = bcm2835_sdhci_get_min_clock, +}; + +static struct sdhci_pltfm_data bcm2835_sdhci_pdata = { + .quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION | + SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK, + .ops = &bcm2835_sdhci_ops, +}; + +static int bcm2835_sdhci_probe(struct platform_device *pdev) +{ + struct sdhci_host *host; + struct bcm2835_sdhci *bcm2835_host; + struct sdhci_pltfm_host *pltfm_host; + int ret; + + host = sdhci_pltfm_init(pdev, &bcm2835_sdhci_pdata); + if (IS_ERR(host)) + return PTR_ERR(host); + + bcm2835_host = devm_kzalloc(&pdev->dev, sizeof(*bcm2835_host), + GFP_KERNEL); + if (!bcm2835_host) { + dev_err(mmc_dev(host->mmc), + "failed to allocate bcm2835_sdhci\n"); + return -ENOMEM; + } + + pltfm_host = sdhci_priv(host); + pltfm_host->priv = bcm2835_host; + + pltfm_host->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(pltfm_host->clk)) { + ret = PTR_ERR(pltfm_host->clk); + goto err; + } + + return sdhci_add_host(host); + +err: + sdhci_pltfm_free(pdev); + return ret; +} + +static int bcm2835_sdhci_remove(struct platform_device *pdev) +{ + struct sdhci_host *host = platform_get_drvdata(pdev); + int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff); + + sdhci_remove_host(host, dead); + sdhci_pltfm_free(pdev); + + return 0; +} + +static const struct of_device_id bcm2835_sdhci_of_match[] = { + { .compatible = "brcm,bcm2835-sdhci" }, + { } +}; +MODULE_DEVICE_TABLE(of, bcm2835_sdhci_of_match); + +static struct platform_driver bcm2835_sdhci_driver = { + .driver = { + .name = "sdhci-bcm2835", + .owner = THIS_MODULE, + .of_match_table = bcm2835_sdhci_of_match, + .pm = SDHCI_PLTFM_PMOPS, + }, + .probe = bcm2835_sdhci_probe, + .remove = bcm2835_sdhci_remove, +}; +module_platform_driver(bcm2835_sdhci_driver); + +MODULE_DESCRIPTION("BCM2835 SDHCI driver"); +MODULE_AUTHOR("Stephen Warren"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/mmc/host/sdhci-cns3xxx.c b/drivers/mmc/host/sdhci-cns3xxx.c index 28a870804f60..30bfdc4ae52a 100644 --- a/drivers/mmc/host/sdhci-cns3xxx.c +++ b/drivers/mmc/host/sdhci-cns3xxx.c @@ -95,12 +95,12 @@ static struct sdhci_pltfm_data sdhci_cns3xxx_pdata = { SDHCI_QUIRK_NONSTANDARD_CLOCK, }; -static int __devinit sdhci_cns3xxx_probe(struct platform_device *pdev) +static int sdhci_cns3xxx_probe(struct platform_device *pdev) { return sdhci_pltfm_register(pdev, &sdhci_cns3xxx_pdata); } -static int __devexit sdhci_cns3xxx_remove(struct platform_device *pdev) +static int sdhci_cns3xxx_remove(struct platform_device *pdev) { return sdhci_pltfm_unregister(pdev); } @@ -112,7 +112,7 @@ static struct platform_driver sdhci_cns3xxx_driver = { .pm = SDHCI_PLTFM_PMOPS, }, .probe = sdhci_cns3xxx_probe, - .remove = __devexit_p(sdhci_cns3xxx_remove), + .remove = sdhci_cns3xxx_remove, }; module_platform_driver(sdhci_cns3xxx_driver); diff --git a/drivers/mmc/host/sdhci-dove.c b/drivers/mmc/host/sdhci-dove.c index 90140eb03e36..169fab91778e 100644 --- a/drivers/mmc/host/sdhci-dove.c +++ b/drivers/mmc/host/sdhci-dove.c @@ -19,19 +19,30 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include <linux/io.h> #include <linux/clk.h> #include <linux/err.h> -#include <linux/module.h> +#include <linux/gpio.h> +#include <linux/io.h> #include <linux/mmc/host.h> +#include <linux/module.h> #include <linux/of.h> +#include <linux/of_gpio.h> #include "sdhci-pltfm.h" struct sdhci_dove_priv { struct clk *clk; + int gpio_cd; }; +static irqreturn_t sdhci_dove_carddetect_irq(int irq, void *data) +{ + struct sdhci_host *host = data; + + tasklet_schedule(&host->card_tasklet); + return IRQ_HANDLED; +} + static u16 sdhci_dove_readw(struct sdhci_host *host, int reg) { u16 ret; @@ -49,16 +60,25 @@ static u16 sdhci_dove_readw(struct sdhci_host *host, int reg) static u32 sdhci_dove_readl(struct sdhci_host *host, int reg) { + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct sdhci_dove_priv *priv = pltfm_host->priv; u32 ret; + ret = readl(host->ioaddr + reg); + switch (reg) { case SDHCI_CAPABILITIES: - ret = readl(host->ioaddr + reg); /* Mask the support for 3.0V */ ret &= ~SDHCI_CAN_VDD_300; break; - default: - ret = readl(host->ioaddr + reg); + case SDHCI_PRESENT_STATE: + if (gpio_is_valid(priv->gpio_cd)) { + if (gpio_get_value(priv->gpio_cd) == 0) + ret |= SDHCI_CARD_PRESENT; + else + ret &= ~SDHCI_CARD_PRESENT; + } + break; } return ret; } @@ -77,57 +97,107 @@ static struct sdhci_pltfm_data sdhci_dove_pdata = { SDHCI_QUIRK_NO_HISPD_BIT, }; -static int __devinit sdhci_dove_probe(struct platform_device *pdev) +static int sdhci_dove_probe(struct platform_device *pdev) { struct sdhci_host *host; struct sdhci_pltfm_host *pltfm_host; struct sdhci_dove_priv *priv; int ret; - ret = sdhci_pltfm_register(pdev, &sdhci_dove_pdata); - if (ret) - goto sdhci_dove_register_fail; - priv = devm_kzalloc(&pdev->dev, sizeof(struct sdhci_dove_priv), GFP_KERNEL); if (!priv) { dev_err(&pdev->dev, "unable to allocate private data"); - ret = -ENOMEM; - goto sdhci_dove_allocate_fail; + return -ENOMEM; + } + + priv->clk = devm_clk_get(&pdev->dev, NULL); + + if (pdev->dev.of_node) { + priv->gpio_cd = of_get_named_gpio(pdev->dev.of_node, + "cd-gpios", 0); + } else { + priv->gpio_cd = -EINVAL; + } + + if (gpio_is_valid(priv->gpio_cd)) { + ret = gpio_request(priv->gpio_cd, "sdhci-cd"); + if (ret) { + dev_err(&pdev->dev, "card detect gpio request failed: %d\n", + ret); + return ret; + } + gpio_direction_input(priv->gpio_cd); + } + + host = sdhci_pltfm_init(pdev, &sdhci_dove_pdata); + if (IS_ERR(host)) { + ret = PTR_ERR(host); + goto err_sdhci_pltfm_init; } - host = platform_get_drvdata(pdev); pltfm_host = sdhci_priv(host); pltfm_host->priv = priv; - priv->clk = clk_get(&pdev->dev, NULL); if (!IS_ERR(priv->clk)) clk_prepare_enable(priv->clk); + + sdhci_get_of_property(pdev); + + ret = sdhci_add_host(host); + if (ret) + goto err_sdhci_add; + + /* + * We must request the IRQ after sdhci_add_host(), as the tasklet only + * gets setup in sdhci_add_host() and we oops. + */ + if (gpio_is_valid(priv->gpio_cd)) { + ret = request_irq(gpio_to_irq(priv->gpio_cd), + sdhci_dove_carddetect_irq, + IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, + mmc_hostname(host->mmc), host); + if (ret) { + dev_err(&pdev->dev, "card detect irq request failed: %d\n", + ret); + goto err_request_irq; + } + } + return 0; -sdhci_dove_allocate_fail: - sdhci_pltfm_unregister(pdev); -sdhci_dove_register_fail: +err_request_irq: + sdhci_remove_host(host, 0); +err_sdhci_add: + if (!IS_ERR(priv->clk)) + clk_disable_unprepare(priv->clk); + sdhci_pltfm_free(pdev); +err_sdhci_pltfm_init: + if (gpio_is_valid(priv->gpio_cd)) + gpio_free(priv->gpio_cd); return ret; } -static int __devexit sdhci_dove_remove(struct platform_device *pdev) +static int sdhci_dove_remove(struct platform_device *pdev) { struct sdhci_host *host = platform_get_drvdata(pdev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct sdhci_dove_priv *priv = pltfm_host->priv; - if (priv->clk) { - if (!IS_ERR(priv->clk)) { - clk_disable_unprepare(priv->clk); - clk_put(priv->clk); - } - devm_kfree(&pdev->dev, priv->clk); + sdhci_pltfm_unregister(pdev); + + if (gpio_is_valid(priv->gpio_cd)) { + free_irq(gpio_to_irq(priv->gpio_cd), host); + gpio_free(priv->gpio_cd); } - return sdhci_pltfm_unregister(pdev); + + if (!IS_ERR(priv->clk)) + clk_disable_unprepare(priv->clk); + + return 0; } -static const struct of_device_id sdhci_dove_of_match_table[] __devinitdata = { +static const struct of_device_id sdhci_dove_of_match_table[] = { { .compatible = "marvell,dove-sdhci", }, {} }; @@ -141,7 +211,7 @@ static struct platform_driver sdhci_dove_driver = { .of_match_table = of_match_ptr(sdhci_dove_of_match_table), }, .probe = sdhci_dove_probe, - .remove = __devexit_p(sdhci_dove_remove), + .remove = sdhci_dove_remove, }; module_platform_driver(sdhci_dove_driver); diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index effc2acfe778..78ac00227c1a 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -21,6 +21,7 @@ #include <linux/mmc/host.h> #include <linux/mmc/mmc.h> #include <linux/mmc/sdio.h> +#include <linux/mmc/slot-gpio.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/of_gpio.h> @@ -29,12 +30,22 @@ #include "sdhci-pltfm.h" #include "sdhci-esdhc.h" -#define SDHCI_CTRL_D3CD 0x08 +#define ESDHC_CTRL_D3CD 0x08 /* VENDOR SPEC register */ -#define SDHCI_VENDOR_SPEC 0xC0 -#define SDHCI_VENDOR_SPEC_SDIO_QUIRK 0x00000002 -#define SDHCI_WTMK_LVL 0x44 -#define SDHCI_MIX_CTRL 0x48 +#define ESDHC_VENDOR_SPEC 0xc0 +#define ESDHC_VENDOR_SPEC_SDIO_QUIRK (1 << 1) +#define ESDHC_WTMK_LVL 0x44 +#define ESDHC_MIX_CTRL 0x48 +#define ESDHC_MIX_CTRL_AC23EN (1 << 7) +/* Bits 3 and 6 are not SDHCI standard definitions */ +#define ESDHC_MIX_CTRL_SDHCI_MASK 0xb7 + +/* + * Our interpretation of the SDHCI_HOST_CONTROL register + */ +#define ESDHC_CTRL_4BITBUS (0x1 << 1) +#define ESDHC_CTRL_8BITBUS (0x2 << 1) +#define ESDHC_CTRL_BUSWIDTH_MASK (0x3 << 1) /* * There is an INT DMA ERR mis-match between eSDHC and STD SDHC SPEC: @@ -42,7 +53,7 @@ * but bit28 is used as the INT DMA ERR in fsl eSDHC design. * Define this macro DMA error INT for fsl eSDHC */ -#define SDHCI_INT_VENDOR_SPEC_DMA_ERR 0x10000000 +#define ESDHC_INT_VENDOR_SPEC_DMA_ERR (1 << 28) /* * The CMDTYPE of the CMD register (offset 0xE) should be set to @@ -143,23 +154,8 @@ static inline void esdhc_clrset_le(struct sdhci_host *host, u32 mask, u32 val, i static u32 esdhc_readl_le(struct sdhci_host *host, int reg) { - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - struct pltfm_imx_data *imx_data = pltfm_host->priv; - struct esdhc_platform_data *boarddata = &imx_data->boarddata; - - /* fake CARD_PRESENT flag */ u32 val = readl(host->ioaddr + reg); - if (unlikely((reg == SDHCI_PRESENT_STATE) - && gpio_is_valid(boarddata->cd_gpio))) { - if (gpio_get_value(boarddata->cd_gpio)) - /* no card, if a valid gpio says so... */ - val &= ~SDHCI_CARD_PRESENT; - else - /* ... in all other cases assume card is present */ - val |= SDHCI_CARD_PRESENT; - } - if (unlikely(reg == SDHCI_CAPABILITIES)) { /* In FSL esdhc IC module, only bit20 is used to indicate the * ADMA2 capability of esdhc, but this bit is messed up on @@ -175,8 +171,8 @@ static u32 esdhc_readl_le(struct sdhci_host *host, int reg) } if (unlikely(reg == SDHCI_INT_STATUS)) { - if (val & SDHCI_INT_VENDOR_SPEC_DMA_ERR) { - val &= ~SDHCI_INT_VENDOR_SPEC_DMA_ERR; + if (val & ESDHC_INT_VENDOR_SPEC_DMA_ERR) { + val &= ~ESDHC_INT_VENDOR_SPEC_DMA_ERR; val |= SDHCI_INT_ADMA_ERROR; } } @@ -188,17 +184,9 @@ static void esdhc_writel_le(struct sdhci_host *host, u32 val, int reg) { struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct pltfm_imx_data *imx_data = pltfm_host->priv; - struct esdhc_platform_data *boarddata = &imx_data->boarddata; u32 data; if (unlikely(reg == SDHCI_INT_ENABLE || reg == SDHCI_SIGNAL_ENABLE)) { - if (boarddata->cd_type == ESDHC_CD_GPIO) - /* - * These interrupts won't work with a custom - * card_detect gpio (only applied to mx25/35) - */ - val &= ~(SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT); - if (val & SDHCI_INT_CARD_INT) { /* * Clear and then set D3CD bit to avoid missing the @@ -209,9 +197,9 @@ static void esdhc_writel_le(struct sdhci_host *host, u32 val, int reg) * re-sample it by the following steps. */ data = readl(host->ioaddr + SDHCI_HOST_CONTROL); - data &= ~SDHCI_CTRL_D3CD; + data &= ~ESDHC_CTRL_D3CD; writel(data, host->ioaddr + SDHCI_HOST_CONTROL); - data |= SDHCI_CTRL_D3CD; + data |= ESDHC_CTRL_D3CD; writel(data, host->ioaddr + SDHCI_HOST_CONTROL); } } @@ -220,15 +208,15 @@ static void esdhc_writel_le(struct sdhci_host *host, u32 val, int reg) && (reg == SDHCI_INT_STATUS) && (val & SDHCI_INT_DATA_END))) { u32 v; - v = readl(host->ioaddr + SDHCI_VENDOR_SPEC); - v &= ~SDHCI_VENDOR_SPEC_SDIO_QUIRK; - writel(v, host->ioaddr + SDHCI_VENDOR_SPEC); + v = readl(host->ioaddr + ESDHC_VENDOR_SPEC); + v &= ~ESDHC_VENDOR_SPEC_SDIO_QUIRK; + writel(v, host->ioaddr + ESDHC_VENDOR_SPEC); } if (unlikely(reg == SDHCI_INT_ENABLE || reg == SDHCI_SIGNAL_ENABLE)) { if (val & SDHCI_INT_ADMA_ERROR) { val &= ~SDHCI_INT_ADMA_ERROR; - val |= SDHCI_INT_VENDOR_SPEC_DMA_ERR; + val |= ESDHC_INT_VENDOR_SPEC_DMA_ERR; } } @@ -237,15 +225,18 @@ static void esdhc_writel_le(struct sdhci_host *host, u32 val, int reg) static u16 esdhc_readw_le(struct sdhci_host *host, int reg) { + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct pltfm_imx_data *imx_data = pltfm_host->priv; + if (unlikely(reg == SDHCI_HOST_VERSION)) { - u16 val = readw(host->ioaddr + (reg ^ 2)); - /* - * uSDHC supports SDHCI v3.0, but it's encoded as value - * 0x3 in host controller version register, which violates - * SDHCI_SPEC_300 definition. Work it around here. - */ - if ((val & SDHCI_SPEC_VER_MASK) == 3) - return --val; + reg ^= 2; + if (is_imx6q_usdhc(imx_data)) { + /* + * The usdhc register returns a wrong host version. + * Correct it here. + */ + return SDHCI_SPEC_300; + } } return readw(host->ioaddr + reg); @@ -258,20 +249,32 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg) switch (reg) { case SDHCI_TRANSFER_MODE: - /* - * Postpone this write, we must do it together with a - * command write that is down below. - */ if ((imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT) && (host->cmd->opcode == SD_IO_RW_EXTENDED) && (host->cmd->data->blocks > 1) && (host->cmd->data->flags & MMC_DATA_READ)) { u32 v; - v = readl(host->ioaddr + SDHCI_VENDOR_SPEC); - v |= SDHCI_VENDOR_SPEC_SDIO_QUIRK; - writel(v, host->ioaddr + SDHCI_VENDOR_SPEC); + v = readl(host->ioaddr + ESDHC_VENDOR_SPEC); + v |= ESDHC_VENDOR_SPEC_SDIO_QUIRK; + writel(v, host->ioaddr + ESDHC_VENDOR_SPEC); + } + + if (is_imx6q_usdhc(imx_data)) { + u32 m = readl(host->ioaddr + ESDHC_MIX_CTRL); + /* Swap AC23 bit */ + if (val & SDHCI_TRNS_AUTO_CMD23) { + val &= ~SDHCI_TRNS_AUTO_CMD23; + val |= ESDHC_MIX_CTRL_AC23EN; + } + m = val | (m & ~ESDHC_MIX_CTRL_SDHCI_MASK); + writel(m, host->ioaddr + ESDHC_MIX_CTRL); + } else { + /* + * Postpone this write, we must do it together with a + * command write that is down below. + */ + imx_data->scratchpad = val; } - imx_data->scratchpad = val; return; case SDHCI_COMMAND: if ((host->cmd->opcode == MMC_STOP_TRANSMISSION || @@ -279,16 +282,12 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg) (imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT)) val |= SDHCI_CMD_ABORTCMD; - if (is_imx6q_usdhc(imx_data)) { - u32 m = readl(host->ioaddr + SDHCI_MIX_CTRL); - m = imx_data->scratchpad | (m & 0xffff0000); - writel(m, host->ioaddr + SDHCI_MIX_CTRL); + if (is_imx6q_usdhc(imx_data)) writel(val << 16, host->ioaddr + SDHCI_TRANSFER_MODE); - } else { + else writel(val << 16 | imx_data->scratchpad, host->ioaddr + SDHCI_TRANSFER_MODE); - } return; case SDHCI_BLOCK_SIZE: val &= ~SDHCI_MAKE_BLKSZ(0x7, 0); @@ -302,6 +301,7 @@ static void esdhc_writeb_le(struct sdhci_host *host, u8 val, int reg) struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct pltfm_imx_data *imx_data = pltfm_host->priv; u32 new_val; + u32 mask; switch (reg) { case SDHCI_POWER_CONTROL: @@ -311,10 +311,8 @@ static void esdhc_writeb_le(struct sdhci_host *host, u8 val, int reg) */ return; case SDHCI_HOST_CONTROL: - /* FSL messed up here, so we can just keep those three */ - new_val = val & (SDHCI_CTRL_LED | \ - SDHCI_CTRL_4BITBUS | \ - SDHCI_CTRL_D3CD); + /* FSL messed up here, so we need to manually compose it. */ + new_val = val & SDHCI_CTRL_LED; /* ensure the endianness */ new_val |= ESDHC_HOST_CONTROL_LE; /* bits 8&9 are reserved on mx25 */ @@ -323,7 +321,13 @@ static void esdhc_writeb_le(struct sdhci_host *host, u8 val, int reg) new_val |= (val & SDHCI_CTRL_DMA_MASK) << 5; } - esdhc_clrset_le(host, 0xffff, new_val, reg); + /* + * Do not touch buswidth bits here. This is done in + * esdhc_pltfm_bus_width. + */ + mask = 0xffff & ~ESDHC_CTRL_BUSWIDTH_MASK; + + esdhc_clrset_le(host, mask, new_val, reg); return; } esdhc_clrset_le(host, 0xff, val, reg); @@ -336,15 +340,15 @@ static void esdhc_writeb_le(struct sdhci_host *host, u8 val, int reg) * circuit relies on. To work around it, we turn the clocks on back * to keep card detection circuit functional. */ - if ((reg == SDHCI_SOFTWARE_RESET) && (val & 1)) + if ((reg == SDHCI_SOFTWARE_RESET) && (val & 1)) { esdhc_clrset_le(host, 0x7, 0x7, ESDHC_SYSTEM_CONTROL); -} - -static unsigned int esdhc_pltfm_get_max_clock(struct sdhci_host *host) -{ - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - - return clk_get_rate(pltfm_host->clk); + /* + * The reset on usdhc fails to clear MIX_CTRL register. + * Do it manually here. + */ + if (is_imx6q_usdhc(imx_data)) + writel(0, host->ioaddr + ESDHC_MIX_CTRL); + } } static unsigned int esdhc_pltfm_get_min_clock(struct sdhci_host *host) @@ -362,8 +366,7 @@ static unsigned int esdhc_pltfm_get_ro(struct sdhci_host *host) switch (boarddata->wp_type) { case ESDHC_WP_GPIO: - if (gpio_is_valid(boarddata->wp_gpio)) - return gpio_get_value(boarddata->wp_gpio); + return mmc_gpio_get_ro(host->mmc); case ESDHC_WP_CONTROLLER: return !(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_WRITE_PROTECT); @@ -374,6 +377,28 @@ static unsigned int esdhc_pltfm_get_ro(struct sdhci_host *host) return -ENOSYS; } +static int esdhc_pltfm_bus_width(struct sdhci_host *host, int width) +{ + u32 ctrl; + + switch (width) { + case MMC_BUS_WIDTH_8: + ctrl = ESDHC_CTRL_8BITBUS; + break; + case MMC_BUS_WIDTH_4: + ctrl = ESDHC_CTRL_4BITBUS; + break; + default: + ctrl = 0; + break; + } + + esdhc_clrset_le(host, ESDHC_CTRL_BUSWIDTH_MASK, ctrl, + SDHCI_HOST_CONTROL); + + return 0; +} + static struct sdhci_ops sdhci_esdhc_ops = { .read_l = esdhc_readl_le, .read_w = esdhc_readw_le, @@ -381,9 +406,10 @@ static struct sdhci_ops sdhci_esdhc_ops = { .write_w = esdhc_writew_le, .write_b = esdhc_writeb_le, .set_clock = esdhc_set_clock, - .get_max_clock = esdhc_pltfm_get_max_clock, + .get_max_clock = sdhci_pltfm_clk_get_max_clock, .get_min_clock = esdhc_pltfm_get_min_clock, .get_ro = esdhc_pltfm_get_ro, + .platform_bus_width = esdhc_pltfm_bus_width, }; static struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = { @@ -394,16 +420,8 @@ static struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = { .ops = &sdhci_esdhc_ops, }; -static irqreturn_t cd_irq(int irq, void *data) -{ - struct sdhci_host *sdhost = (struct sdhci_host *)data; - - tasklet_schedule(&sdhost->card_tasklet); - return IRQ_HANDLED; -}; - #ifdef CONFIG_OF -static int __devinit +static int sdhci_esdhc_imx_probe_dt(struct platform_device *pdev, struct esdhc_platform_data *boarddata) { @@ -429,6 +447,8 @@ sdhci_esdhc_imx_probe_dt(struct platform_device *pdev, if (gpio_is_valid(boarddata->wp_gpio)) boarddata->wp_type = ESDHC_WP_GPIO; + of_property_read_u32(np, "bus-width", &boarddata->max_bus_width); + return 0; } #else @@ -440,7 +460,7 @@ sdhci_esdhc_imx_probe_dt(struct platform_device *pdev, } #endif -static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev) +static int sdhci_esdhc_imx_probe(struct platform_device *pdev) { const struct of_device_id *of_id = of_match_device(imx_esdhc_dt_ids, &pdev->dev); @@ -456,10 +476,10 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev) pltfm_host = sdhci_priv(host); - imx_data = kzalloc(sizeof(struct pltfm_imx_data), GFP_KERNEL); + imx_data = devm_kzalloc(&pdev->dev, sizeof(*imx_data), GFP_KERNEL); if (!imx_data) { err = -ENOMEM; - goto err_imx_data; + goto free_sdhci; } if (of_id) @@ -470,19 +490,19 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev) imx_data->clk_ipg = devm_clk_get(&pdev->dev, "ipg"); if (IS_ERR(imx_data->clk_ipg)) { err = PTR_ERR(imx_data->clk_ipg); - goto err_clk_get; + goto free_sdhci; } imx_data->clk_ahb = devm_clk_get(&pdev->dev, "ahb"); if (IS_ERR(imx_data->clk_ahb)) { err = PTR_ERR(imx_data->clk_ahb); - goto err_clk_get; + goto free_sdhci; } imx_data->clk_per = devm_clk_get(&pdev->dev, "per"); if (IS_ERR(imx_data->clk_per)) { err = PTR_ERR(imx_data->clk_per); - goto err_clk_get; + goto free_sdhci; } pltfm_host->clk = imx_data->clk_per; @@ -494,7 +514,7 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev) imx_data->pinctrl = devm_pinctrl_get_select_default(&pdev->dev); if (IS_ERR(imx_data->pinctrl)) { err = PTR_ERR(imx_data->pinctrl); - goto pin_err; + goto disable_clk; } host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL; @@ -512,14 +532,14 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev) * to something insane. Change it back here. */ if (is_imx6q_usdhc(imx_data)) - writel(0x08100810, host->ioaddr + SDHCI_WTMK_LVL); + writel(0x08100810, host->ioaddr + ESDHC_WTMK_LVL); boarddata = &imx_data->boarddata; if (sdhci_esdhc_imx_probe_dt(pdev, boarddata) < 0) { if (!host->mmc->parent->platform_data) { dev_err(mmc_dev(host->mmc), "no board data!\n"); err = -EINVAL; - goto no_board_data; + goto disable_clk; } imx_data->boarddata = *((struct esdhc_platform_data *) host->mmc->parent->platform_data); @@ -527,35 +547,23 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev) /* write_protect */ if (boarddata->wp_type == ESDHC_WP_GPIO) { - err = gpio_request_one(boarddata->wp_gpio, GPIOF_IN, "ESDHC_WP"); + err = mmc_gpio_request_ro(host->mmc, boarddata->wp_gpio); if (err) { - dev_warn(mmc_dev(host->mmc), - "no write-protect pin available!\n"); - boarddata->wp_gpio = -EINVAL; + dev_err(mmc_dev(host->mmc), + "failed to request write-protect gpio!\n"); + goto disable_clk; } - } else { - boarddata->wp_gpio = -EINVAL; + host->mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH; } /* card_detect */ - if (boarddata->cd_type != ESDHC_CD_GPIO) - boarddata->cd_gpio = -EINVAL; - switch (boarddata->cd_type) { case ESDHC_CD_GPIO: - err = gpio_request_one(boarddata->cd_gpio, GPIOF_IN, "ESDHC_CD"); + err = mmc_gpio_request_cd(host->mmc, boarddata->cd_gpio); if (err) { dev_err(mmc_dev(host->mmc), - "no card-detect pin available!\n"); - goto no_card_detect_pin; - } - - err = request_irq(gpio_to_irq(boarddata->cd_gpio), cd_irq, - IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, - mmc_hostname(host->mmc), host); - if (err) { - dev_err(mmc_dev(host->mmc), "request irq error\n"); - goto no_card_detect_irq; + "failed to request card-detect gpio!\n"); + goto disable_clk; } /* fall through */ @@ -572,57 +580,47 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev) break; } + switch (boarddata->max_bus_width) { + case 8: + host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_4_BIT_DATA; + break; + case 4: + host->mmc->caps |= MMC_CAP_4_BIT_DATA; + break; + case 1: + default: + host->quirks |= SDHCI_QUIRK_FORCE_1_BIT_DATA; + break; + } + err = sdhci_add_host(host); if (err) - goto err_add_host; + goto disable_clk; return 0; -err_add_host: - if (gpio_is_valid(boarddata->cd_gpio)) - free_irq(gpio_to_irq(boarddata->cd_gpio), host); -no_card_detect_irq: - if (gpio_is_valid(boarddata->cd_gpio)) - gpio_free(boarddata->cd_gpio); - if (gpio_is_valid(boarddata->wp_gpio)) - gpio_free(boarddata->wp_gpio); -no_card_detect_pin: -no_board_data: -pin_err: +disable_clk: clk_disable_unprepare(imx_data->clk_per); clk_disable_unprepare(imx_data->clk_ipg); clk_disable_unprepare(imx_data->clk_ahb); -err_clk_get: - kfree(imx_data); -err_imx_data: +free_sdhci: sdhci_pltfm_free(pdev); return err; } -static int __devexit sdhci_esdhc_imx_remove(struct platform_device *pdev) +static int sdhci_esdhc_imx_remove(struct platform_device *pdev) { struct sdhci_host *host = platform_get_drvdata(pdev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct pltfm_imx_data *imx_data = pltfm_host->priv; - struct esdhc_platform_data *boarddata = &imx_data->boarddata; int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff); sdhci_remove_host(host, dead); - if (gpio_is_valid(boarddata->wp_gpio)) - gpio_free(boarddata->wp_gpio); - - if (gpio_is_valid(boarddata->cd_gpio)) { - free_irq(gpio_to_irq(boarddata->cd_gpio), host); - gpio_free(boarddata->cd_gpio); - } - clk_disable_unprepare(imx_data->clk_per); clk_disable_unprepare(imx_data->clk_ipg); clk_disable_unprepare(imx_data->clk_ahb); - kfree(imx_data); - sdhci_pltfm_free(pdev); return 0; @@ -637,7 +635,7 @@ static struct platform_driver sdhci_esdhc_imx_driver = { }, .id_table = imx_esdhc_devtype, .probe = sdhci_esdhc_imx_probe, - .remove = __devexit_p(sdhci_esdhc_imx_remove), + .remove = sdhci_esdhc_imx_remove, }; module_platform_driver(sdhci_esdhc_imx_driver); diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c index ae5fcbfa1eef..f32526d2d966 100644 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c @@ -22,6 +22,7 @@ #include "sdhci-esdhc.h" #define VENDOR_V_22 0x12 +#define VENDOR_V_23 0x13 static u32 esdhc_readl(struct sdhci_host *host, int reg) { u32 ret; @@ -85,6 +86,18 @@ static u8 esdhc_readb(struct sdhci_host *host, int reg) return ret; } +static void esdhc_writel(struct sdhci_host *host, u32 val, int reg) +{ + /* + * Enable IRQSTATEN[BGESEN] is just to set IRQSTAT[BGE] + * when SYSCTL[RSTD]) is set for some special operations. + * No any impact other operation. + */ + if (reg == SDHCI_INT_ENABLE) + val |= SDHCI_INT_BLK_GAP; + sdhci_be32bs_writel(host, val, reg); +} + static void esdhc_writew(struct sdhci_host *host, u16 val, int reg) { if (reg == SDHCI_BLOCK_SIZE) { @@ -121,6 +134,41 @@ static void esdhc_writeb(struct sdhci_host *host, u8 val, int reg) sdhci_be32bs_writeb(host, val, reg); } +/* + * For Abort or Suspend after Stop at Block Gap, ignore the ADMA + * error(IRQSTAT[ADMAE]) if both Transfer Complete(IRQSTAT[TC]) + * and Block Gap Event(IRQSTAT[BGE]) are also set. + * For Continue, apply soft reset for data(SYSCTL[RSTD]); + * and re-issue the entire read transaction from beginning. + */ +static void esdhci_of_adma_workaround(struct sdhci_host *host, u32 intmask) +{ + u32 tmp; + bool applicable; + dma_addr_t dmastart; + dma_addr_t dmanow; + + tmp = in_be32(host->ioaddr + SDHCI_SLOT_INT_STATUS); + tmp = (tmp & SDHCI_VENDOR_VER_MASK) >> SDHCI_VENDOR_VER_SHIFT; + + applicable = (intmask & SDHCI_INT_DATA_END) && + (intmask & SDHCI_INT_BLK_GAP) && + (tmp == VENDOR_V_23); + if (!applicable) + return; + + host->data->error = 0; + dmastart = sg_dma_address(host->data->sg); + dmanow = dmastart + host->data->bytes_xfered; + /* + * Force update to the next DMA block boundary. + */ + dmanow = (dmanow & ~(SDHCI_DEFAULT_BOUNDARY_SIZE - 1)) + + SDHCI_DEFAULT_BOUNDARY_SIZE; + host->data->bytes_xfered = dmanow - dmastart; + sdhci_writel(host, dmanow, SDHCI_DMA_ADDRESS); +} + static int esdhc_of_enable_dma(struct sdhci_host *host) { setbits32(host->ioaddr + ESDHC_DMA_SYSCTL, ESDHC_DMA_SNOOP); @@ -169,21 +217,36 @@ static void esdhc_of_resume(struct sdhci_host *host) } #endif +static void esdhc_of_platform_init(struct sdhci_host *host) +{ + u32 vvn; + + vvn = in_be32(host->ioaddr + SDHCI_SLOT_INT_STATUS); + vvn = (vvn & SDHCI_VENDOR_VER_MASK) >> SDHCI_VENDOR_VER_SHIFT; + if (vvn == VENDOR_V_22) + host->quirks2 |= SDHCI_QUIRK2_HOST_NO_CMD23; + + if (vvn > VENDOR_V_22) + host->quirks &= ~SDHCI_QUIRK_NO_BUSY_IRQ; +} + static struct sdhci_ops sdhci_esdhc_ops = { .read_l = esdhc_readl, .read_w = esdhc_readw, .read_b = esdhc_readb, - .write_l = sdhci_be32bs_writel, + .write_l = esdhc_writel, .write_w = esdhc_writew, .write_b = esdhc_writeb, .set_clock = esdhc_of_set_clock, .enable_dma = esdhc_of_enable_dma, .get_max_clock = esdhc_of_get_max_clock, .get_min_clock = esdhc_of_get_min_clock, + .platform_init = esdhc_of_platform_init, #ifdef CONFIG_PM .platform_suspend = esdhc_of_suspend, .platform_resume = esdhc_of_resume, #endif + .adma_workaround = esdhci_of_adma_workaround, }; static struct sdhci_pltfm_data sdhci_esdhc_pdata = { @@ -197,12 +260,12 @@ static struct sdhci_pltfm_data sdhci_esdhc_pdata = { .ops = &sdhci_esdhc_ops, }; -static int __devinit sdhci_esdhc_probe(struct platform_device *pdev) +static int sdhci_esdhc_probe(struct platform_device *pdev) { return sdhci_pltfm_register(pdev, &sdhci_esdhc_pdata); } -static int __devexit sdhci_esdhc_remove(struct platform_device *pdev) +static int sdhci_esdhc_remove(struct platform_device *pdev) { return sdhci_pltfm_unregister(pdev); } @@ -223,7 +286,7 @@ static struct platform_driver sdhci_esdhc_driver = { .pm = SDHCI_PLTFM_PMOPS, }, .probe = sdhci_esdhc_probe, - .remove = __devexit_p(sdhci_esdhc_remove), + .remove = sdhci_esdhc_remove, }; module_platform_driver(sdhci_esdhc_driver); diff --git a/drivers/mmc/host/sdhci-of-hlwd.c b/drivers/mmc/host/sdhci-of-hlwd.c index 0ce088ae0228..c3d3715ec3d7 100644 --- a/drivers/mmc/host/sdhci-of-hlwd.c +++ b/drivers/mmc/host/sdhci-of-hlwd.c @@ -66,12 +66,12 @@ static struct sdhci_pltfm_data sdhci_hlwd_pdata = { .ops = &sdhci_hlwd_ops, }; -static int __devinit sdhci_hlwd_probe(struct platform_device *pdev) +static int sdhci_hlwd_probe(struct platform_device *pdev) { return sdhci_pltfm_register(pdev, &sdhci_hlwd_pdata); } -static int __devexit sdhci_hlwd_remove(struct platform_device *pdev) +static int sdhci_hlwd_remove(struct platform_device *pdev) { return sdhci_pltfm_unregister(pdev); } @@ -90,7 +90,7 @@ static struct platform_driver sdhci_hlwd_driver = { .pm = SDHCI_PLTFM_PMOPS, }, .probe = sdhci_hlwd_probe, - .remove = __devexit_p(sdhci_hlwd_remove), + .remove = sdhci_hlwd_remove, }; module_platform_driver(sdhci_hlwd_driver); diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c index 4bb74b042a06..c7ccf3034dad 100644 --- a/drivers/mmc/host/sdhci-pci.c +++ b/drivers/mmc/host/sdhci-pci.c @@ -114,6 +114,7 @@ static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot) SDHCI_TIMEOUT_CLK_UNIT | SDHCI_CAN_VDD_330 | + SDHCI_CAN_DO_HISPD | SDHCI_CAN_DO_SDMA; return 0; } @@ -653,7 +654,7 @@ static const struct sdhci_pci_fixes sdhci_via = { .probe = via_probe, }; -static const struct pci_device_id pci_ids[] __devinitconst = { +static const struct pci_device_id pci_ids[] = { { .vendor = PCI_VENDOR_ID_RICOH, .device = PCI_DEVICE_ID_RICOH_R5C822, @@ -934,7 +935,7 @@ static int sdhci_pci_enable_dma(struct sdhci_host *host) return 0; } -static int sdhci_pci_8bit_width(struct sdhci_host *host, int width) +static int sdhci_pci_bus_width(struct sdhci_host *host, int width) { u8 ctrl; @@ -976,7 +977,7 @@ static void sdhci_pci_hw_reset(struct sdhci_host *host) static struct sdhci_ops sdhci_pci_ops = { .enable_dma = sdhci_pci_enable_dma, - .platform_8bit_width = sdhci_pci_8bit_width, + .platform_bus_width = sdhci_pci_bus_width, .hw_reset = sdhci_pci_hw_reset, }; @@ -1183,7 +1184,7 @@ static const struct dev_pm_ops sdhci_pci_pm_ops = { * * \*****************************************************************************/ -static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot( +static struct sdhci_pci_slot *sdhci_pci_probe_slot( struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar, int slotno) { @@ -1196,7 +1197,7 @@ static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot( return ERR_PTR(-ENODEV); } - if (pci_resource_len(pdev, bar) != 0x100) { + if (pci_resource_len(pdev, bar) < 0x100) { dev_err(&pdev->dev, "Invalid iomem size. You may " "experience problems.\n"); } @@ -1338,7 +1339,7 @@ static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot) sdhci_free_host(slot->host); } -static void __devinit sdhci_pci_runtime_pm_allow(struct device *dev) +static void sdhci_pci_runtime_pm_allow(struct device *dev) { pm_runtime_put_noidle(dev); pm_runtime_allow(dev); @@ -1347,13 +1348,13 @@ static void __devinit sdhci_pci_runtime_pm_allow(struct device *dev) pm_suspend_ignore_children(dev, 1); } -static void __devexit sdhci_pci_runtime_pm_forbid(struct device *dev) +static void sdhci_pci_runtime_pm_forbid(struct device *dev) { pm_runtime_forbid(dev); pm_runtime_get_noresume(dev); } -static int __devinit sdhci_pci_probe(struct pci_dev *pdev, +static int sdhci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { struct sdhci_pci_chip *chip; @@ -1445,7 +1446,7 @@ err: return ret; } -static void __devexit sdhci_pci_remove(struct pci_dev *pdev) +static void sdhci_pci_remove(struct pci_dev *pdev) { int i; struct sdhci_pci_chip *chip; @@ -1470,7 +1471,7 @@ static struct pci_driver sdhci_driver = { .name = "sdhci-pci", .id_table = pci_ids, .probe = sdhci_pci_probe, - .remove = __devexit_p(sdhci_pci_remove), + .remove = sdhci_pci_remove, .driver = { .pm = &sdhci_pci_pm_ops }, diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c index 65551a9709cc..3145a780b035 100644 --- a/drivers/mmc/host/sdhci-pltfm.c +++ b/drivers/mmc/host/sdhci-pltfm.c @@ -36,6 +36,14 @@ #endif #include "sdhci-pltfm.h" +unsigned int sdhci_pltfm_clk_get_max_clock(struct sdhci_host *host) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + + return clk_get_rate(pltfm_host->clk); +} +EXPORT_SYMBOL_GPL(sdhci_pltfm_clk_get_max_clock); + static struct sdhci_ops sdhci_pltfm_ops = { }; @@ -78,6 +86,9 @@ void sdhci_get_of_property(struct platform_device *pdev) if (of_get_property(np, "broken-cd", NULL)) host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION; + if (of_get_property(np, "no-1-8-v", NULL)) + host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V; + if (of_device_is_compatible(np, "fsl,p2020-rev1-esdhc")) host->quirks |= SDHCI_QUIRK_BROKEN_DMA; @@ -89,6 +100,12 @@ void sdhci_get_of_property(struct platform_device *pdev) clk = of_get_property(np, "clock-frequency", &size); if (clk && size == sizeof(*clk) && *clk) pltfm_host->clock = be32_to_cpup(clk); + + if (of_find_property(np, "keep-power-in-suspend", NULL)) + host->mmc->pm_caps |= MMC_PM_KEEP_POWER; + + if (of_find_property(np, "enable-sdio-wakeup", NULL)) + host->mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ; } } #else @@ -150,6 +167,13 @@ struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev, goto err_remap; } + /* + * Some platforms need to probe the controller to be able to + * determine which caps should be used. + */ + if (host->ops && host->ops->platform_init) + host->ops->platform_init(host); + platform_set_drvdata(pdev, host); return host; diff --git a/drivers/mmc/host/sdhci-pltfm.h b/drivers/mmc/host/sdhci-pltfm.h index 37e0e184a0bb..153b6c509ebe 100644 --- a/drivers/mmc/host/sdhci-pltfm.h +++ b/drivers/mmc/host/sdhci-pltfm.h @@ -98,6 +98,8 @@ extern int sdhci_pltfm_register(struct platform_device *pdev, struct sdhci_pltfm_data *pdata); extern int sdhci_pltfm_unregister(struct platform_device *pdev); +extern unsigned int sdhci_pltfm_clk_get_max_clock(struct sdhci_host *host); + #ifdef CONFIG_PM extern const struct dev_pm_ops sdhci_pltfm_pmops; #define SDHCI_PLTFM_PMOPS (&sdhci_pltfm_pmops) diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c index 8e63a9c04e31..eeb7d439db1d 100644 --- a/drivers/mmc/host/sdhci-pxav2.c +++ b/drivers/mmc/host/sdhci-pxav2.c @@ -111,17 +111,10 @@ static int pxav2_mmc_set_width(struct sdhci_host *host, int width) return 0; } -static u32 pxav2_get_max_clock(struct sdhci_host *host) -{ - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - - return clk_get_rate(pltfm_host->clk); -} - static struct sdhci_ops pxav2_sdhci_ops = { - .get_max_clock = pxav2_get_max_clock, + .get_max_clock = sdhci_pltfm_clk_get_max_clock, .platform_reset_exit = pxav2_set_private_registers, - .platform_8bit_width = pxav2_mmc_set_width, + .platform_bus_width = pxav2_mmc_set_width, }; #ifdef CONFIG_OF @@ -166,7 +159,7 @@ static inline struct sdhci_pxa_platdata *pxav2_get_mmc_pdata(struct device *dev) } #endif -static int __devinit sdhci_pxav2_probe(struct platform_device *pdev) +static int sdhci_pxav2_probe(struct platform_device *pdev) { struct sdhci_pltfm_host *pltfm_host; struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data; @@ -247,7 +240,7 @@ err_clk_get: return ret; } -static int __devexit sdhci_pxav2_remove(struct platform_device *pdev) +static int sdhci_pxav2_remove(struct platform_device *pdev) { struct sdhci_host *host = platform_get_drvdata(pdev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); @@ -275,7 +268,7 @@ static struct platform_driver sdhci_pxav2_driver = { .pm = SDHCI_PLTFM_PMOPS, }, .probe = sdhci_pxav2_probe, - .remove = __devexit_p(sdhci_pxav2_remove), + .remove = sdhci_pxav2_remove, }; module_platform_driver(sdhci_pxav2_driver); diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c index e918a2bb3af1..a0cdbc570a83 100644 --- a/drivers/mmc/host/sdhci-pxav3.c +++ b/drivers/mmc/host/sdhci-pxav3.c @@ -32,10 +32,14 @@ #include <linux/of.h> #include <linux/of_device.h> #include <linux/of_gpio.h> +#include <linux/pm.h> +#include <linux/pm_runtime.h> #include "sdhci.h" #include "sdhci-pltfm.h" +#define PXAV3_RPM_DELAY_MS 50 + #define SD_CLOCK_BURST_SIZE_SETUP 0x10A #define SDCLK_SEL 0x100 #define SDCLK_DELAY_SHIFT 9 @@ -167,6 +171,7 @@ static struct sdhci_ops pxav3_sdhci_ops = { .platform_reset_exit = pxav3_set_private_registers, .set_uhs_signaling = pxav3_set_uhs_signaling, .platform_send_init_74_clocks = pxav3_gen_init_74_clocks, + .get_max_clock = sdhci_pltfm_clk_get_max_clock, }; #ifdef CONFIG_OF @@ -214,7 +219,7 @@ static inline struct sdhci_pxa_platdata *pxav3_get_mmc_pdata(struct device *dev) } #endif -static int __devinit sdhci_pxav3_probe(struct platform_device *pdev) +static int sdhci_pxav3_probe(struct platform_device *pdev) { struct sdhci_pltfm_host *pltfm_host; struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data; @@ -249,7 +254,8 @@ static int __devinit sdhci_pxav3_probe(struct platform_device *pdev) host->quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL | SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC - | SDHCI_QUIRK_32BIT_ADMA_SIZE; + | SDHCI_QUIRK_32BIT_ADMA_SIZE + | SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN; /* enable 1/8V DDR capable */ host->mmc->caps |= MMC_CAP_1_8V_DDR; @@ -271,6 +277,8 @@ static int __devinit sdhci_pxav3_probe(struct platform_device *pdev) if (pdata->quirks) host->quirks |= pdata->quirks; + if (pdata->quirks2) + host->quirks2 |= pdata->quirks2; if (pdata->host_caps) host->mmc->caps |= pdata->host_caps; if (pdata->host_caps2) @@ -292,20 +300,37 @@ static int __devinit sdhci_pxav3_probe(struct platform_device *pdev) sdhci_get_of_property(pdev); + pm_runtime_set_active(&pdev->dev); + pm_runtime_enable(&pdev->dev); + pm_runtime_set_autosuspend_delay(&pdev->dev, PXAV3_RPM_DELAY_MS); + pm_runtime_use_autosuspend(&pdev->dev); + pm_suspend_ignore_children(&pdev->dev, 1); + pm_runtime_get_noresume(&pdev->dev); + ret = sdhci_add_host(host); if (ret) { dev_err(&pdev->dev, "failed to add host\n"); + pm_runtime_forbid(&pdev->dev); + pm_runtime_disable(&pdev->dev); goto err_add_host; } platform_set_drvdata(pdev, host); + if (pdata->pm_caps & MMC_PM_KEEP_POWER) { + device_init_wakeup(&pdev->dev, 1); + host->mmc->pm_flags |= MMC_PM_WAKE_SDIO_IRQ; + } else { + device_init_wakeup(&pdev->dev, 0); + } + + pm_runtime_put_autosuspend(&pdev->dev); + return 0; err_add_host: clk_disable_unprepare(clk); clk_put(clk); - mmc_gpio_free_cd(host->mmc); err_cd_req: err_clk_get: sdhci_pltfm_free(pdev); @@ -313,21 +338,19 @@ err_clk_get: return ret; } -static int __devexit sdhci_pxav3_remove(struct platform_device *pdev) +static int sdhci_pxav3_remove(struct platform_device *pdev) { struct sdhci_host *host = platform_get_drvdata(pdev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct sdhci_pxa *pxa = pltfm_host->priv; - struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data; + pm_runtime_get_sync(&pdev->dev); sdhci_remove_host(host, 1); + pm_runtime_disable(&pdev->dev); clk_disable_unprepare(pltfm_host->clk); clk_put(pltfm_host->clk); - if (gpio_is_valid(pdata->ext_cd_gpio)) - mmc_gpio_free_cd(host->mmc); - sdhci_pltfm_free(pdev); kfree(pxa); @@ -336,6 +359,83 @@ static int __devexit sdhci_pxav3_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM_SLEEP +static int sdhci_pxav3_suspend(struct device *dev) +{ + int ret; + struct sdhci_host *host = dev_get_drvdata(dev); + + pm_runtime_get_sync(dev); + ret = sdhci_suspend_host(host); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + + return ret; +} + +static int sdhci_pxav3_resume(struct device *dev) +{ + int ret; + struct sdhci_host *host = dev_get_drvdata(dev); + + pm_runtime_get_sync(dev); + ret = sdhci_resume_host(host); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + + return ret; +} +#endif + +#ifdef CONFIG_PM_RUNTIME +static int sdhci_pxav3_runtime_suspend(struct device *dev) +{ + struct sdhci_host *host = dev_get_drvdata(dev); + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + unsigned long flags; + + if (pltfm_host->clk) { + spin_lock_irqsave(&host->lock, flags); + host->runtime_suspended = true; + spin_unlock_irqrestore(&host->lock, flags); + + clk_disable_unprepare(pltfm_host->clk); + } + + return 0; +} + +static int sdhci_pxav3_runtime_resume(struct device *dev) +{ + struct sdhci_host *host = dev_get_drvdata(dev); + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + unsigned long flags; + + if (pltfm_host->clk) { + clk_prepare_enable(pltfm_host->clk); + + spin_lock_irqsave(&host->lock, flags); + host->runtime_suspended = false; + spin_unlock_irqrestore(&host->lock, flags); + } + + return 0; +} +#endif + +#ifdef CONFIG_PM +static const struct dev_pm_ops sdhci_pxav3_pmops = { + SET_SYSTEM_SLEEP_PM_OPS(sdhci_pxav3_suspend, sdhci_pxav3_resume) + SET_RUNTIME_PM_OPS(sdhci_pxav3_runtime_suspend, + sdhci_pxav3_runtime_resume, NULL) +}; + +#define SDHCI_PXAV3_PMOPS (&sdhci_pxav3_pmops) + +#else +#define SDHCI_PXAV3_PMOPS NULL +#endif + static struct platform_driver sdhci_pxav3_driver = { .driver = { .name = "sdhci-pxav3", @@ -343,10 +443,10 @@ static struct platform_driver sdhci_pxav3_driver = { .of_match_table = sdhci_pxav3_of_match, #endif .owner = THIS_MODULE, - .pm = SDHCI_PLTFM_PMOPS, + .pm = SDHCI_PXAV3_PMOPS, }, .probe = sdhci_pxav3_probe, - .remove = __devexit_p(sdhci_pxav3_remove), + .remove = sdhci_pxav3_remove, }; module_platform_driver(sdhci_pxav3_driver); diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c index 2903949594c6..7363efe72287 100644 --- a/drivers/mmc/host/sdhci-s3c.c +++ b/drivers/mmc/host/sdhci-s3c.c @@ -24,6 +24,7 @@ #include <linux/of_gpio.h> #include <linux/pm.h> #include <linux/pm_runtime.h> +#include <linux/pinctrl/consumer.h> #include <linux/mmc/host.h> @@ -57,6 +58,7 @@ struct sdhci_s3c { int ext_cd_irq; int ext_cd_gpio; int *gpios; + struct pinctrl *pctrl; struct clk *clk_io; struct clk *clk_bus[MAX_BUS_CLK]; @@ -211,8 +213,8 @@ static void sdhci_s3c_set_clock(struct sdhci_host *host, unsigned int clock) if (ourhost->cur_clk != best_src) { struct clk *clk = ourhost->clk_bus[best_src]; - clk_enable(clk); - clk_disable(ourhost->clk_bus[ourhost->cur_clk]); + clk_prepare_enable(clk); + clk_disable_unprepare(ourhost->clk_bus[ourhost->cur_clk]); /* turn clock off to card before changing clock source */ writew(0, host->ioaddr + SDHCI_CLOCK_CONTROL); @@ -330,14 +332,14 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock) } /** - * sdhci_s3c_platform_8bit_width - support 8bit buswidth + * sdhci_s3c_platform_bus_width - support 8bit buswidth * @host: The SDHCI host being queried * @width: MMC_BUS_WIDTH_ macro for the bus width being requested * * We have 8-bit width support but is not a v3 controller. - * So we add platform_8bit_width() and support 8bit width. + * So we add platform_bus_width() and support 8bit width. */ -static int sdhci_s3c_platform_8bit_width(struct sdhci_host *host, int width) +static int sdhci_s3c_platform_bus_width(struct sdhci_host *host, int width) { u8 ctrl; @@ -367,24 +369,33 @@ static struct sdhci_ops sdhci_s3c_ops = { .get_max_clock = sdhci_s3c_get_max_clk, .set_clock = sdhci_s3c_set_clock, .get_min_clock = sdhci_s3c_get_min_clock, - .platform_8bit_width = sdhci_s3c_platform_8bit_width, + .platform_bus_width = sdhci_s3c_platform_bus_width, }; static void sdhci_s3c_notify_change(struct platform_device *dev, int state) { struct sdhci_host *host = platform_get_drvdata(dev); +#ifdef CONFIG_PM_RUNTIME + struct sdhci_s3c *sc = sdhci_priv(host); +#endif unsigned long flags; if (host) { spin_lock_irqsave(&host->lock, flags); if (state) { dev_dbg(&dev->dev, "card inserted.\n"); +#ifdef CONFIG_PM_RUNTIME + clk_prepare_enable(sc->clk_io); +#endif host->flags &= ~SDHCI_DEVICE_DEAD; host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION; } else { dev_dbg(&dev->dev, "card removed.\n"); host->flags |= SDHCI_DEVICE_DEAD; host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION; +#ifdef CONFIG_PM_RUNTIME + clk_disable_unprepare(sc->clk_io); +#endif } tasklet_schedule(&host->card_tasklet); spin_unlock_irqrestore(&host->lock, flags); @@ -406,7 +417,7 @@ static void sdhci_s3c_setup_card_detect_gpio(struct sdhci_s3c *sc) struct s3c_sdhci_platdata *pdata = sc->pdata; struct device *dev = &sc->pdev->dev; - if (gpio_request(pdata->ext_cd_gpio, "SDHCI EXT CD") == 0) { + if (devm_gpio_request(dev, pdata->ext_cd_gpio, "SDHCI EXT CD") == 0) { sc->ext_cd_gpio = pdata->ext_cd_gpio; sc->ext_cd_irq = gpio_to_irq(pdata->ext_cd_gpio); if (sc->ext_cd_irq && @@ -430,7 +441,7 @@ static void sdhci_s3c_setup_card_detect_gpio(struct sdhci_s3c *sc) } #ifdef CONFIG_OF -static int __devinit sdhci_s3c_parse_dt(struct device *dev, +static int sdhci_s3c_parse_dt(struct device *dev, struct sdhci_host *host, struct s3c_sdhci_platdata *pdata) { struct device_node *node = dev->of_node; @@ -449,12 +460,12 @@ static int __devinit sdhci_s3c_parse_dt(struct device *dev, return -ENOMEM; /* get the card detection method */ - if (of_get_property(node, "broken-cd", 0)) { + if (of_get_property(node, "broken-cd", NULL)) { pdata->cd_type = S3C_SDHCI_CD_NONE; goto setup_bus; } - if (of_get_property(node, "non-removable", 0)) { + if (of_get_property(node, "non-removable", NULL)) { pdata->cd_type = S3C_SDHCI_CD_PERMANENT; goto setup_bus; } @@ -477,8 +488,9 @@ static int __devinit sdhci_s3c_parse_dt(struct device *dev, return -EINVAL; } - dev_info(dev, "assuming no card detect line available\n"); - pdata->cd_type = S3C_SDHCI_CD_NONE; + /* assuming internal card detect that will be configured by pinctrl */ + pdata->cd_type = S3C_SDHCI_CD_INTERNAL; + goto setup_bus; found_cd: if (pdata->cd_type == S3C_SDHCI_CD_GPIO) { @@ -487,7 +499,7 @@ static int __devinit sdhci_s3c_parse_dt(struct device *dev, if (of_get_property(node, "cd-inverted", NULL)) pdata->ext_cd_gpio_invert = 1; } else if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { - ret = gpio_request(gpio, "sdhci-cd"); + ret = devm_gpio_request(dev, gpio, "sdhci-cd"); if (ret) { dev_err(dev, "card detect gpio request failed\n"); return -EINVAL; @@ -496,36 +508,31 @@ static int __devinit sdhci_s3c_parse_dt(struct device *dev, } setup_bus: + if (!IS_ERR(ourhost->pctrl)) + return 0; + /* get the gpios for command, clock and data lines */ for (cnt = 0; cnt < NUM_GPIOS(pdata->max_width); cnt++) { gpio = of_get_gpio(node, cnt); if (!gpio_is_valid(gpio)) { dev_err(dev, "invalid gpio[%d]\n", cnt); - goto err_free_dt_cd_gpio; + return -EINVAL; } ourhost->gpios[cnt] = gpio; } for (cnt = 0; cnt < NUM_GPIOS(pdata->max_width); cnt++) { - ret = gpio_request(ourhost->gpios[cnt], "sdhci-gpio"); + ret = devm_gpio_request(dev, ourhost->gpios[cnt], "sdhci-gpio"); if (ret) { dev_err(dev, "gpio[%d] request failed\n", cnt); - goto err_free_dt_gpios; + return -EINVAL; } } return 0; - - err_free_dt_gpios: - while (--cnt >= 0) - gpio_free(ourhost->gpios[cnt]); - err_free_dt_cd_gpio: - if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) - gpio_free(ourhost->ext_cd_gpio); - return -EINVAL; } #else -static int __devinit sdhci_s3c_parse_dt(struct device *dev, +static int sdhci_s3c_parse_dt(struct device *dev, struct sdhci_host *host, struct s3c_sdhci_platdata *pdata) { return -EINVAL; @@ -548,7 +555,7 @@ static inline struct sdhci_s3c_drv_data *sdhci_s3c_get_driver_data( platform_get_device_id(pdev)->driver_data; } -static int __devinit sdhci_s3c_probe(struct platform_device *pdev) +static int sdhci_s3c_probe(struct platform_device *pdev) { struct s3c_sdhci_platdata *pdata; struct sdhci_s3c_drv_data *drv_data; @@ -579,13 +586,15 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev) pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) { ret = -ENOMEM; - goto err_pdata; + goto err_pdata_io_clk; } + sc->pctrl = devm_pinctrl_get_select_default(&pdev->dev); + if (pdev->dev.of_node) { ret = sdhci_s3c_parse_dt(&pdev->dev, host, pdata); if (ret) - goto err_pdata; + goto err_pdata_io_clk; } else { memcpy(pdata, pdev->dev.platform_data, sizeof(*pdata)); sc->ext_cd_gpio = -1; /* invalid gpio number */ @@ -603,11 +612,11 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev) if (IS_ERR(sc->clk_io)) { dev_err(dev, "failed to get io clock\n"); ret = PTR_ERR(sc->clk_io); - goto err_io_clk; + goto err_pdata_io_clk; } /* enable the local io clock and keep it running for the moment. */ - clk_enable(sc->clk_io); + clk_prepare_enable(sc->clk_io); for (clks = 0, ptr = 0; ptr < MAX_BUS_CLK; ptr++) { struct clk *clk; @@ -638,14 +647,13 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev) } #ifndef CONFIG_PM_RUNTIME - clk_enable(sc->clk_bus[sc->cur_clk]); + clk_prepare_enable(sc->clk_bus[sc->cur_clk]); #endif res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - host->ioaddr = devm_request_and_ioremap(&pdev->dev, res); - if (!host->ioaddr) { - dev_err(dev, "failed to map registers\n"); - ret = -ENXIO; + host->ioaddr = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(host->ioaddr)) { + ret = PTR_ERR(host->ioaddr); goto err_req_regs; } @@ -747,13 +755,14 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev) sdhci_s3c_setup_card_detect_gpio(sc); #ifdef CONFIG_PM_RUNTIME - clk_disable(sc->clk_io); + if (pdata->cd_type != S3C_SDHCI_CD_INTERNAL) + clk_disable_unprepare(sc->clk_io); #endif return 0; err_req_regs: #ifndef CONFIG_PM_RUNTIME - clk_disable(sc->clk_bus[sc->cur_clk]); + clk_disable_unprepare(sc->clk_bus[sc->cur_clk]); #endif for (ptr = 0; ptr < MAX_BUS_CLK; ptr++) { if (sc->clk_bus[ptr]) { @@ -762,22 +771,16 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev) } err_no_busclks: - clk_disable(sc->clk_io); + clk_disable_unprepare(sc->clk_io); clk_put(sc->clk_io); - err_io_clk: - for (ptr = 0; ptr < NUM_GPIOS(sc->pdata->max_width); ptr++) - gpio_free(sc->gpios[ptr]); - if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) - gpio_free(sc->ext_cd_gpio); - - err_pdata: + err_pdata_io_clk: sdhci_free_host(host); return ret; } -static int __devexit sdhci_s3c_remove(struct platform_device *pdev) +static int sdhci_s3c_remove(struct platform_device *pdev) { struct sdhci_host *host = platform_get_drvdata(pdev); struct sdhci_s3c *sc = sdhci_priv(host); @@ -790,11 +793,9 @@ static int __devexit sdhci_s3c_remove(struct platform_device *pdev) if (sc->ext_cd_irq) free_irq(sc->ext_cd_irq, sc); - if (gpio_is_valid(sc->ext_cd_gpio)) - gpio_free(sc->ext_cd_gpio); - #ifdef CONFIG_PM_RUNTIME - clk_enable(sc->clk_io); + if (pdata->cd_type != S3C_SDHCI_CD_INTERNAL) + clk_prepare_enable(sc->clk_io); #endif sdhci_remove_host(host, 1); @@ -802,21 +803,16 @@ static int __devexit sdhci_s3c_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); #ifndef CONFIG_PM_RUNTIME - clk_disable(sc->clk_bus[sc->cur_clk]); + clk_disable_unprepare(sc->clk_bus[sc->cur_clk]); #endif for (ptr = 0; ptr < MAX_BUS_CLK; ptr++) { if (sc->clk_bus[ptr]) { clk_put(sc->clk_bus[ptr]); } } - clk_disable(sc->clk_io); + clk_disable_unprepare(sc->clk_io); clk_put(sc->clk_io); - if (pdev->dev.of_node) { - for (ptr = 0; ptr < NUM_GPIOS(sc->pdata->max_width); ptr++) - gpio_free(sc->gpios[ptr]); - } - sdhci_free_host(host); platform_set_drvdata(pdev, NULL); @@ -849,8 +845,8 @@ static int sdhci_s3c_runtime_suspend(struct device *dev) ret = sdhci_runtime_suspend_host(host); - clk_disable(ourhost->clk_bus[ourhost->cur_clk]); - clk_disable(busclk); + clk_disable_unprepare(ourhost->clk_bus[ourhost->cur_clk]); + clk_disable_unprepare(busclk); return ret; } @@ -861,8 +857,8 @@ static int sdhci_s3c_runtime_resume(struct device *dev) struct clk *busclk = ourhost->clk_io; int ret; - clk_enable(busclk); - clk_enable(ourhost->clk_bus[ourhost->cur_clk]); + clk_prepare_enable(busclk); + clk_prepare_enable(ourhost->clk_bus[ourhost->cur_clk]); ret = sdhci_runtime_resume_host(host); return ret; } @@ -914,7 +910,7 @@ MODULE_DEVICE_TABLE(of, sdhci_s3c_dt_match); static struct platform_driver sdhci_s3c_driver = { .probe = sdhci_s3c_probe, - .remove = __devexit_p(sdhci_s3c_remove), + .remove = sdhci_s3c_remove, .id_table = sdhci_s3c_driver_ids, .driver = { .owner = THIS_MODULE, diff --git a/drivers/mmc/host/sdhci-spear.c b/drivers/mmc/host/sdhci-spear.c index 6be89c032deb..c6ece0bd03b3 100644 --- a/drivers/mmc/host/sdhci-spear.c +++ b/drivers/mmc/host/sdhci-spear.c @@ -71,8 +71,7 @@ static irqreturn_t sdhci_gpio_irq(int irq, void *dev_id) } #ifdef CONFIG_OF -static struct sdhci_plat_data * __devinit -sdhci_probe_config_dt(struct platform_device *pdev) +static struct sdhci_plat_data *sdhci_probe_config_dt(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct sdhci_plat_data *pdata = NULL; @@ -96,14 +95,13 @@ sdhci_probe_config_dt(struct platform_device *pdev) return pdata; } #else -static struct sdhci_plat_data * __devinit -sdhci_probe_config_dt(struct platform_device *pdev) +static struct sdhci_plat_data *sdhci_probe_config_dt(struct platform_device *pdev) { return ERR_PTR(-ENOSYS); } #endif -static int __devinit sdhci_probe(struct platform_device *pdev) +static int sdhci_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct sdhci_host *host; @@ -146,6 +144,11 @@ static int __devinit sdhci_probe(struct platform_device *pdev) goto put_clk; } + ret = clk_set_rate(sdhci->clk, 50000000); + if (ret) + dev_dbg(&pdev->dev, "Error setting desired clk, clk=%lu\n", + clk_get_rate(sdhci->clk)); + if (np) { sdhci->data = sdhci_probe_config_dt(pdev); if (IS_ERR(sdhci->data)) { @@ -268,7 +271,7 @@ err: return ret; } -static int __devexit sdhci_remove(struct platform_device *pdev) +static int sdhci_remove(struct platform_device *pdev) { struct sdhci_host *host = platform_get_drvdata(pdev); struct spear_sdhci *sdhci = dev_get_platdata(&pdev->dev); @@ -297,7 +300,7 @@ static int sdhci_suspend(struct device *dev) ret = sdhci_suspend_host(host); if (!ret) - clk_disable_unprepare(sdhci->clk); + clk_disable(sdhci->clk); return ret; } @@ -308,7 +311,7 @@ static int sdhci_resume(struct device *dev) struct spear_sdhci *sdhci = dev_get_platdata(dev); int ret; - ret = clk_prepare_enable(sdhci->clk); + ret = clk_enable(sdhci->clk); if (ret) { dev_dbg(dev, "Resume: Error enabling clock\n"); return ret; @@ -336,7 +339,7 @@ static struct platform_driver sdhci_driver = { .of_match_table = of_match_ptr(sdhci_spear_id_table), }, .probe = sdhci_probe, - .remove = __devexit_p(sdhci_remove), + .remove = sdhci_remove, }; module_platform_driver(sdhci_driver); diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index f9eb91623701..08b06e9a3a21 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -27,8 +27,6 @@ #include <asm/gpio.h> -#include <linux/platform_data/mmc-sdhci-tegra.h> - #include "sdhci-pltfm.h" /* Tegra SDHOST controller vendor register definitions */ @@ -45,8 +43,11 @@ struct sdhci_tegra_soc_data { }; struct sdhci_tegra { - const struct tegra_sdhci_platform_data *plat; const struct sdhci_tegra_soc_data *soc_data; + int cd_gpio; + int wp_gpio; + int power_gpio; + int is_8bit; }; static u32 tegra_sdhci_readl(struct sdhci_host *host, int reg) @@ -108,12 +109,11 @@ static unsigned int tegra_sdhci_get_ro(struct sdhci_host *host) { struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct sdhci_tegra *tegra_host = pltfm_host->priv; - const struct tegra_sdhci_platform_data *plat = tegra_host->plat; - if (!gpio_is_valid(plat->wp_gpio)) + if (!gpio_is_valid(tegra_host->wp_gpio)) return -1; - return gpio_get_value(plat->wp_gpio); + return gpio_get_value(tegra_host->wp_gpio); } static irqreturn_t carddetect_irq(int irq, void *data) @@ -143,15 +143,14 @@ static void tegra_sdhci_reset_exit(struct sdhci_host *host, u8 mask) } } -static int tegra_sdhci_8bit(struct sdhci_host *host, int bus_width) +static int tegra_sdhci_buswidth(struct sdhci_host *host, int bus_width) { struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct sdhci_tegra *tegra_host = pltfm_host->priv; - const struct tegra_sdhci_platform_data *plat = tegra_host->plat; u32 ctrl; ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); - if (plat->is_8bit && bus_width == MMC_BUS_WIDTH_8) { + if (tegra_host->is_8bit && bus_width == MMC_BUS_WIDTH_8) { ctrl &= ~SDHCI_CTRL_4BITBUS; ctrl |= SDHCI_CTRL_8BITBUS; } else { @@ -170,7 +169,7 @@ static struct sdhci_ops tegra_sdhci_ops = { .read_l = tegra_sdhci_readl, .read_w = tegra_sdhci_readw, .write_l = tegra_sdhci_writel, - .platform_8bit_width = tegra_sdhci_8bit, + .platform_bus_width = tegra_sdhci_buswidth, .platform_reset_exit = tegra_sdhci_reset_exit, }; @@ -206,7 +205,7 @@ static struct sdhci_tegra_soc_data soc_data_tegra30 = { }; #endif -static const struct of_device_id sdhci_tegra_dt_match[] __devinitdata = { +static const struct of_device_id sdhci_tegra_dt_match[] = { #ifdef CONFIG_ARCH_TEGRA_3x_SOC { .compatible = "nvidia,tegra30-sdhci", .data = &soc_data_tegra30 }, #endif @@ -217,40 +216,27 @@ static const struct of_device_id sdhci_tegra_dt_match[] __devinitdata = { }; MODULE_DEVICE_TABLE(of, sdhci_dt_ids); -static struct tegra_sdhci_platform_data * __devinit sdhci_tegra_dt_parse_pdata( - struct platform_device *pdev) +static void sdhci_tegra_parse_dt(struct device *dev, + struct sdhci_tegra *tegra_host) { - struct tegra_sdhci_platform_data *plat; - struct device_node *np = pdev->dev.of_node; + struct device_node *np = dev->of_node; u32 bus_width; - if (!np) - return NULL; - - plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL); - if (!plat) { - dev_err(&pdev->dev, "Can't allocate platform data\n"); - return NULL; - } - - plat->cd_gpio = of_get_named_gpio(np, "cd-gpios", 0); - plat->wp_gpio = of_get_named_gpio(np, "wp-gpios", 0); - plat->power_gpio = of_get_named_gpio(np, "power-gpios", 0); + tegra_host->cd_gpio = of_get_named_gpio(np, "cd-gpios", 0); + tegra_host->wp_gpio = of_get_named_gpio(np, "wp-gpios", 0); + tegra_host->power_gpio = of_get_named_gpio(np, "power-gpios", 0); if (of_property_read_u32(np, "bus-width", &bus_width) == 0 && bus_width == 8) - plat->is_8bit = 1; - - return plat; + tegra_host->is_8bit = 1; } -static int __devinit sdhci_tegra_probe(struct platform_device *pdev) +static int sdhci_tegra_probe(struct platform_device *pdev) { const struct of_device_id *match; const struct sdhci_tegra_soc_data *soc_data; struct sdhci_host *host; struct sdhci_pltfm_host *pltfm_host; - struct tegra_sdhci_platform_data *plat; struct sdhci_tegra *tegra_host; struct clk *clk; int rc; @@ -263,52 +249,40 @@ static int __devinit sdhci_tegra_probe(struct platform_device *pdev) host = sdhci_pltfm_init(pdev, soc_data->pdata); if (IS_ERR(host)) return PTR_ERR(host); - pltfm_host = sdhci_priv(host); - plat = pdev->dev.platform_data; - - if (plat == NULL) - plat = sdhci_tegra_dt_parse_pdata(pdev); - - if (plat == NULL) { - dev_err(mmc_dev(host->mmc), "missing platform data\n"); - rc = -ENXIO; - goto err_no_plat; - } - tegra_host = devm_kzalloc(&pdev->dev, sizeof(*tegra_host), GFP_KERNEL); if (!tegra_host) { dev_err(mmc_dev(host->mmc), "failed to allocate tegra_host\n"); rc = -ENOMEM; - goto err_no_plat; + goto err_alloc_tegra_host; } - - tegra_host->plat = plat; tegra_host->soc_data = soc_data; - pltfm_host->priv = tegra_host; - if (gpio_is_valid(plat->power_gpio)) { - rc = gpio_request(plat->power_gpio, "sdhci_power"); + sdhci_tegra_parse_dt(&pdev->dev, tegra_host); + + if (gpio_is_valid(tegra_host->power_gpio)) { + rc = gpio_request(tegra_host->power_gpio, "sdhci_power"); if (rc) { dev_err(mmc_dev(host->mmc), "failed to allocate power gpio\n"); goto err_power_req; } - gpio_direction_output(plat->power_gpio, 1); + gpio_direction_output(tegra_host->power_gpio, 1); } - if (gpio_is_valid(plat->cd_gpio)) { - rc = gpio_request(plat->cd_gpio, "sdhci_cd"); + if (gpio_is_valid(tegra_host->cd_gpio)) { + rc = gpio_request(tegra_host->cd_gpio, "sdhci_cd"); if (rc) { dev_err(mmc_dev(host->mmc), "failed to allocate cd gpio\n"); goto err_cd_req; } - gpio_direction_input(plat->cd_gpio); + gpio_direction_input(tegra_host->cd_gpio); - rc = request_irq(gpio_to_irq(plat->cd_gpio), carddetect_irq, + rc = request_irq(gpio_to_irq(tegra_host->cd_gpio), + carddetect_irq, IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, mmc_hostname(host->mmc), host); @@ -319,14 +293,14 @@ static int __devinit sdhci_tegra_probe(struct platform_device *pdev) } - if (gpio_is_valid(plat->wp_gpio)) { - rc = gpio_request(plat->wp_gpio, "sdhci_wp"); + if (gpio_is_valid(tegra_host->wp_gpio)) { + rc = gpio_request(tegra_host->wp_gpio, "sdhci_wp"); if (rc) { dev_err(mmc_dev(host->mmc), "failed to allocate wp gpio\n"); goto err_wp_req; } - gpio_direction_input(plat->wp_gpio); + gpio_direction_input(tegra_host->wp_gpio); } clk = clk_get(mmc_dev(host->mmc), NULL); @@ -338,9 +312,7 @@ static int __devinit sdhci_tegra_probe(struct platform_device *pdev) clk_prepare_enable(clk); pltfm_host->clk = clk; - host->mmc->pm_caps = plat->pm_flags; - - if (plat->is_8bit) + if (tegra_host->is_8bit) host->mmc->caps |= MMC_CAP_8_BIT_DATA; rc = sdhci_add_host(host); @@ -353,43 +325,42 @@ err_add_host: clk_disable_unprepare(pltfm_host->clk); clk_put(pltfm_host->clk); err_clk_get: - if (gpio_is_valid(plat->wp_gpio)) - gpio_free(plat->wp_gpio); + if (gpio_is_valid(tegra_host->wp_gpio)) + gpio_free(tegra_host->wp_gpio); err_wp_req: - if (gpio_is_valid(plat->cd_gpio)) - free_irq(gpio_to_irq(plat->cd_gpio), host); + if (gpio_is_valid(tegra_host->cd_gpio)) + free_irq(gpio_to_irq(tegra_host->cd_gpio), host); err_cd_irq_req: - if (gpio_is_valid(plat->cd_gpio)) - gpio_free(plat->cd_gpio); + if (gpio_is_valid(tegra_host->cd_gpio)) + gpio_free(tegra_host->cd_gpio); err_cd_req: - if (gpio_is_valid(plat->power_gpio)) - gpio_free(plat->power_gpio); + if (gpio_is_valid(tegra_host->power_gpio)) + gpio_free(tegra_host->power_gpio); err_power_req: -err_no_plat: +err_alloc_tegra_host: sdhci_pltfm_free(pdev); return rc; } -static int __devexit sdhci_tegra_remove(struct platform_device *pdev) +static int sdhci_tegra_remove(struct platform_device *pdev) { struct sdhci_host *host = platform_get_drvdata(pdev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct sdhci_tegra *tegra_host = pltfm_host->priv; - const struct tegra_sdhci_platform_data *plat = tegra_host->plat; int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff); sdhci_remove_host(host, dead); - if (gpio_is_valid(plat->wp_gpio)) - gpio_free(plat->wp_gpio); + if (gpio_is_valid(tegra_host->wp_gpio)) + gpio_free(tegra_host->wp_gpio); - if (gpio_is_valid(plat->cd_gpio)) { - free_irq(gpio_to_irq(plat->cd_gpio), host); - gpio_free(plat->cd_gpio); + if (gpio_is_valid(tegra_host->cd_gpio)) { + free_irq(gpio_to_irq(tegra_host->cd_gpio), host); + gpio_free(tegra_host->cd_gpio); } - if (gpio_is_valid(plat->power_gpio)) - gpio_free(plat->power_gpio); + if (gpio_is_valid(tegra_host->power_gpio)) + gpio_free(tegra_host->power_gpio); clk_disable_unprepare(pltfm_host->clk); clk_put(pltfm_host->clk); @@ -407,7 +378,7 @@ static struct platform_driver sdhci_tegra_driver = { .pm = SDHCI_PLTFM_PMOPS, }, .probe = sdhci_tegra_probe, - .remove = __devexit_p(sdhci_tegra_remove), + .remove = sdhci_tegra_remove, }; module_platform_driver(sdhci_tegra_driver); diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 7922adb42386..51bbba486f38 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -53,6 +53,7 @@ static void sdhci_send_command(struct sdhci_host *, struct mmc_command *); static void sdhci_finish_command(struct sdhci_host *); static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode); static void sdhci_tuning_timer(unsigned long data); +static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable); #ifdef CONFIG_PM_RUNTIME static int sdhci_runtime_pm_get(struct sdhci_host *host); @@ -1082,6 +1083,37 @@ static void sdhci_finish_command(struct sdhci_host *host) } } +static u16 sdhci_get_preset_value(struct sdhci_host *host) +{ + u16 ctrl, preset = 0; + + ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); + + switch (ctrl & SDHCI_CTRL_UHS_MASK) { + case SDHCI_CTRL_UHS_SDR12: + preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR12); + break; + case SDHCI_CTRL_UHS_SDR25: + preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR25); + break; + case SDHCI_CTRL_UHS_SDR50: + preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR50); + break; + case SDHCI_CTRL_UHS_SDR104: + preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR104); + break; + case SDHCI_CTRL_UHS_DDR50: + preset = sdhci_readw(host, SDHCI_PRESET_FOR_DDR50); + break; + default: + pr_warn("%s: Invalid UHS-I mode selected\n", + mmc_hostname(host->mmc)); + preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR12); + break; + } + return preset; +} + static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) { int div = 0; /* Initialized for compiler warning */ @@ -1106,35 +1138,43 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) goto out; if (host->version >= SDHCI_SPEC_300) { + if (sdhci_readw(host, SDHCI_HOST_CONTROL2) & + SDHCI_CTRL_PRESET_VAL_ENABLE) { + u16 pre_val; + + clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); + pre_val = sdhci_get_preset_value(host); + div = (pre_val & SDHCI_PRESET_SDCLK_FREQ_MASK) + >> SDHCI_PRESET_SDCLK_FREQ_SHIFT; + if (host->clk_mul && + (pre_val & SDHCI_PRESET_CLKGEN_SEL_MASK)) { + clk = SDHCI_PROG_CLOCK_MODE; + real_div = div + 1; + clk_mul = host->clk_mul; + } else { + real_div = max_t(int, 1, div << 1); + } + goto clock_set; + } + /* * Check if the Host Controller supports Programmable Clock * Mode. */ if (host->clk_mul) { - u16 ctrl; - + for (div = 1; div <= 1024; div++) { + if ((host->max_clk * host->clk_mul / div) + <= clock) + break; + } /* - * We need to figure out whether the Host Driver needs - * to select Programmable Clock Mode, or the value can - * be set automatically by the Host Controller based on - * the Preset Value registers. + * Set Programmable Clock Mode in the Clock + * Control register. */ - ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); - if (!(ctrl & SDHCI_CTRL_PRESET_VAL_ENABLE)) { - for (div = 1; div <= 1024; div++) { - if (((host->max_clk * host->clk_mul) / - div) <= clock) - break; - } - /* - * Set Programmable Clock Mode in the Clock - * Control register. - */ - clk = SDHCI_PROG_CLOCK_MODE; - real_div = div; - clk_mul = host->clk_mul; - div--; - } + clk = SDHCI_PROG_CLOCK_MODE; + real_div = div; + clk_mul = host->clk_mul; + div--; } else { /* Version 3.00 divisors must be a multiple of 2. */ if (host->max_clk <= clock) @@ -1159,6 +1199,7 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) div >>= 1; } +clock_set: if (real_div) host->mmc->actual_clock = (host->max_clk * clk_mul) / real_div; @@ -1189,6 +1230,15 @@ out: host->clock = clock; } +static inline void sdhci_update_clock(struct sdhci_host *host) +{ + unsigned int clock; + + clock = host->clock; + host->clock = 0; + sdhci_set_clock(host, clock); +} + static int sdhci_set_power(struct sdhci_host *host, unsigned short power) { u8 pwr = 0; @@ -1258,7 +1308,7 @@ static int sdhci_set_power(struct sdhci_host *host, unsigned short power) static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) { struct sdhci_host *host; - bool present; + int present; unsigned long flags; u32 tuning_opcode; @@ -1287,18 +1337,21 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) host->mrq = mrq; - /* If polling, assume that the card is always present. */ - if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) - present = true; - else - present = sdhci_readl(host, SDHCI_PRESENT_STATE) & - SDHCI_CARD_PRESENT; - - /* If we're using a cd-gpio, testing the presence bit might fail. */ - if (!present) { - int ret = mmc_gpio_get_cd(host->mmc); - if (ret > 0) - present = true; + /* + * Firstly check card presence from cd-gpio. The return could + * be one of the following possibilities: + * negative: cd-gpio is not available + * zero: cd-gpio is used, and card is removed + * one: cd-gpio is used, and card is present + */ + present = mmc_gpio_get_cd(host->mmc); + if (present < 0) { + /* If polling, assume that the card is always present. */ + if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) + present = 1; + else + present = sdhci_readl(host, SDHCI_PRESENT_STATE) & + SDHCI_CARD_PRESENT; } if (!present || host->flags & SDHCI_DEVICE_DEAD) { @@ -1315,16 +1368,19 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) */ if ((host->flags & SDHCI_NEEDS_RETUNING) && !(present_state & (SDHCI_DOING_WRITE | SDHCI_DOING_READ))) { - /* eMMC uses cmd21 while sd and sdio use cmd19 */ - tuning_opcode = mmc->card->type == MMC_TYPE_MMC ? - MMC_SEND_TUNING_BLOCK_HS200 : - MMC_SEND_TUNING_BLOCK; - spin_unlock_irqrestore(&host->lock, flags); - sdhci_execute_tuning(mmc, tuning_opcode); - spin_lock_irqsave(&host->lock, flags); - - /* Restore original mmc_request structure */ - host->mrq = mrq; + if (mmc->card) { + /* eMMC uses cmd21 but sd and sdio use cmd19 */ + tuning_opcode = + mmc->card->type == MMC_TYPE_MMC ? + MMC_SEND_TUNING_BLOCK_HS200 : + MMC_SEND_TUNING_BLOCK; + spin_unlock_irqrestore(&host->lock, flags); + sdhci_execute_tuning(mmc, tuning_opcode); + spin_lock_irqsave(&host->lock, flags); + + /* Restore original mmc_request structure */ + host->mrq = mrq; + } } if (mrq->sbc && !(host->flags & SDHCI_AUTO_CMD23)) @@ -1361,6 +1417,10 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) sdhci_reinit(host); } + if (host->version >= SDHCI_SPEC_300 && + (ios->power_mode == MMC_POWER_UP)) + sdhci_enable_preset_value(host, false); + sdhci_set_clock(host, ios->clock); if (ios->power_mode == MMC_POWER_OFF) @@ -1380,11 +1440,11 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) /* * If your platform has 8-bit width support but is not a v3 controller, * or if it requires special setup code, you should implement that in - * platform_8bit_width(). + * platform_bus_width(). */ - if (host->ops->platform_8bit_width) - host->ops->platform_8bit_width(host, ios->bus_width); - else { + if (host->ops->platform_bus_width) { + host->ops->platform_bus_width(host, ios->bus_width); + } else { ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); if (ios->bus_width == MMC_BUS_WIDTH_8) { ctrl &= ~SDHCI_CTRL_4BITBUS; @@ -1412,7 +1472,6 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) if (host->version >= SDHCI_SPEC_300) { u16 clk, ctrl_2; - unsigned int clock; /* In case of UHS-I modes, set High Speed Enable */ if ((ios->timing == MMC_TIMING_MMC_HS200) || @@ -1452,9 +1511,7 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); /* Re-enable SD Clock */ - clock = host->clock; - host->clock = 0; - sdhci_set_clock(host, clock); + sdhci_update_clock(host); } @@ -1484,10 +1541,22 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2); } + if (!(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN) && + ((ios->timing == MMC_TIMING_UHS_SDR12) || + (ios->timing == MMC_TIMING_UHS_SDR25) || + (ios->timing == MMC_TIMING_UHS_SDR50) || + (ios->timing == MMC_TIMING_UHS_SDR104) || + (ios->timing == MMC_TIMING_UHS_DDR50))) { + u16 preset; + + sdhci_enable_preset_value(host, true); + preset = sdhci_get_preset_value(host); + ios->drv_type = (preset & SDHCI_PRESET_DRV_MASK) + >> SDHCI_PRESET_DRV_SHIFT; + } + /* Re-enable SD Clock */ - clock = host->clock; - host->clock = 0; - sdhci_set_clock(host, clock); + sdhci_update_clock(host); } else sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); @@ -1605,141 +1674,91 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable) spin_unlock_irqrestore(&host->lock, flags); } -static int sdhci_do_3_3v_signal_voltage_switch(struct sdhci_host *host, - u16 ctrl) +static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host, + struct mmc_ios *ios) { + u16 ctrl; int ret; - /* Set 1.8V Signal Enable in the Host Control2 register to 0 */ - ctrl &= ~SDHCI_CTRL_VDD_180; - sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); - - if (host->vqmmc) { - ret = regulator_set_voltage(host->vqmmc, 3300000, 3300000); - if (ret) { - pr_warning("%s: Switching to 3.3V signalling voltage " - " failed\n", mmc_hostname(host->mmc)); - return -EIO; - } - } - /* Wait for 5ms */ - usleep_range(5000, 5500); + /* + * Signal Voltage Switching is only applicable for Host Controllers + * v3.00 and above. + */ + if (host->version < SDHCI_SPEC_300) + return 0; - /* 3.3V regulator output should be stable within 5 ms */ ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); - if (!(ctrl & SDHCI_CTRL_VDD_180)) - return 0; - pr_warning("%s: 3.3V regulator output did not became stable\n", - mmc_hostname(host->mmc)); + switch (ios->signal_voltage) { + case MMC_SIGNAL_VOLTAGE_330: + /* Set 1.8V Signal Enable in the Host Control2 register to 0 */ + ctrl &= ~SDHCI_CTRL_VDD_180; + sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); - return -EIO; -} + if (host->vqmmc) { + ret = regulator_set_voltage(host->vqmmc, 2700000, 3600000); + if (ret) { + pr_warning("%s: Switching to 3.3V signalling voltage " + " failed\n", mmc_hostname(host->mmc)); + return -EIO; + } + } + /* Wait for 5ms */ + usleep_range(5000, 5500); -static int sdhci_do_1_8v_signal_voltage_switch(struct sdhci_host *host, - u16 ctrl) -{ - u8 pwr; - u16 clk; - u32 present_state; - int ret; + /* 3.3V regulator output should be stable within 5 ms */ + ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); + if (!(ctrl & SDHCI_CTRL_VDD_180)) + return 0; - /* Stop SDCLK */ - clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); - clk &= ~SDHCI_CLOCK_CARD_EN; - sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); + pr_warning("%s: 3.3V regulator output did not became stable\n", + mmc_hostname(host->mmc)); + + return -EAGAIN; + case MMC_SIGNAL_VOLTAGE_180: + if (host->vqmmc) { + ret = regulator_set_voltage(host->vqmmc, + 1700000, 1950000); + if (ret) { + pr_warning("%s: Switching to 1.8V signalling voltage " + " failed\n", mmc_hostname(host->mmc)); + return -EIO; + } + } - /* Check whether DAT[3:0] is 0000 */ - present_state = sdhci_readl(host, SDHCI_PRESENT_STATE); - if (!((present_state & SDHCI_DATA_LVL_MASK) >> - SDHCI_DATA_LVL_SHIFT)) { /* * Enable 1.8V Signal Enable in the Host Control2 * register */ - if (host->vqmmc) - ret = regulator_set_voltage(host->vqmmc, - 1800000, 1800000); - else - ret = 0; + ctrl |= SDHCI_CTRL_VDD_180; + sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); - if (!ret) { - ctrl |= SDHCI_CTRL_VDD_180; - sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); + /* Wait for 5ms */ + usleep_range(5000, 5500); - /* Wait for 5ms */ - usleep_range(5000, 5500); + /* 1.8V regulator output should be stable within 5 ms */ + ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); + if (ctrl & SDHCI_CTRL_VDD_180) + return 0; - ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); - if (ctrl & SDHCI_CTRL_VDD_180) { - /* Provide SDCLK again and wait for 1ms */ - clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); - clk |= SDHCI_CLOCK_CARD_EN; - sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); - usleep_range(1000, 1500); + pr_warning("%s: 1.8V regulator output did not became stable\n", + mmc_hostname(host->mmc)); - /* - * If DAT[3:0] level is 1111b, then the card - * was successfully switched to 1.8V signaling. - */ - present_state = sdhci_readl(host, - SDHCI_PRESENT_STATE); - if ((present_state & SDHCI_DATA_LVL_MASK) == - SDHCI_DATA_LVL_MASK) - return 0; + return -EAGAIN; + case MMC_SIGNAL_VOLTAGE_120: + if (host->vqmmc) { + ret = regulator_set_voltage(host->vqmmc, 1100000, 1300000); + if (ret) { + pr_warning("%s: Switching to 1.2V signalling voltage " + " failed\n", mmc_hostname(host->mmc)); + return -EIO; } } - } - - /* - * If we are here, that means the switch to 1.8V signaling - * failed. We power cycle the card, and retry initialization - * sequence by setting S18R to 0. - */ - pwr = sdhci_readb(host, SDHCI_POWER_CONTROL); - pwr &= ~SDHCI_POWER_ON; - sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); - if (host->vmmc) - regulator_disable(host->vmmc); - - /* Wait for 1ms as per the spec */ - usleep_range(1000, 1500); - pwr |= SDHCI_POWER_ON; - sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); - if (host->vmmc) - regulator_enable(host->vmmc); - - pr_warning("%s: Switching to 1.8V signalling voltage failed, " - "retrying with S18R set to 0\n", mmc_hostname(host->mmc)); - - return -EAGAIN; -} - -static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host, - struct mmc_ios *ios) -{ - u16 ctrl; - - /* - * Signal Voltage Switching is only applicable for Host Controllers - * v3.00 and above. - */ - if (host->version < SDHCI_SPEC_300) return 0; - - /* - * We first check whether the request is to set signalling voltage - * to 3.3V. If so, we change the voltage to 3.3V and return quickly. - */ - ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); - if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330) - return sdhci_do_3_3v_signal_voltage_switch(host, ctrl); - else if (!(ctrl & SDHCI_CTRL_VDD_180) && - (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_180)) - return sdhci_do_1_8v_signal_voltage_switch(host, ctrl); - else + default: /* No signal voltage switch required */ return 0; + } } static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc, @@ -1756,6 +1775,19 @@ static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc, return err; } +static int sdhci_card_busy(struct mmc_host *mmc) +{ + struct sdhci_host *host = mmc_priv(mmc); + u32 present_state; + + sdhci_runtime_pm_get(host); + /* Check whether DAT[3:0] is 0000 */ + present_state = sdhci_readl(host, SDHCI_PRESENT_STATE); + sdhci_runtime_pm_put(host); + + return !(present_state & SDHCI_DATA_LVL_MASK); +} + static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode) { struct sdhci_host *host; @@ -1952,17 +1984,15 @@ out: return err; } -static void sdhci_do_enable_preset_value(struct sdhci_host *host, bool enable) + +static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable) { u16 ctrl; - unsigned long flags; /* Host Controller v3.00 defines preset value registers */ if (host->version < SDHCI_SPEC_300) return; - spin_lock_irqsave(&host->lock, flags); - ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); /* @@ -1978,17 +2008,31 @@ static void sdhci_do_enable_preset_value(struct sdhci_host *host, bool enable) sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); host->flags &= ~SDHCI_PV_ENABLED; } - - spin_unlock_irqrestore(&host->lock, flags); } -static void sdhci_enable_preset_value(struct mmc_host *mmc, bool enable) +static void sdhci_card_event(struct mmc_host *mmc) { struct sdhci_host *host = mmc_priv(mmc); + unsigned long flags; - sdhci_runtime_pm_get(host); - sdhci_do_enable_preset_value(host, enable); - sdhci_runtime_pm_put(host); + spin_lock_irqsave(&host->lock, flags); + + /* Check host->mrq first in case we are runtime suspended */ + if (host->mrq && + !(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) { + pr_err("%s: Card removed during transfer!\n", + mmc_hostname(host->mmc)); + pr_err("%s: Resetting controller.\n", + mmc_hostname(host->mmc)); + + sdhci_reset(host, SDHCI_RESET_CMD); + sdhci_reset(host, SDHCI_RESET_DATA); + + host->mrq->cmd->error = -ENOMEDIUM; + tasklet_schedule(&host->finish_tasklet); + } + + spin_unlock_irqrestore(&host->lock, flags); } static const struct mmc_host_ops sdhci_ops = { @@ -1999,7 +2043,8 @@ static const struct mmc_host_ops sdhci_ops = { .enable_sdio_irq = sdhci_enable_sdio_irq, .start_signal_voltage_switch = sdhci_start_signal_voltage_switch, .execute_tuning = sdhci_execute_tuning, - .enable_preset_value = sdhci_enable_preset_value, + .card_event = sdhci_card_event, + .card_busy = sdhci_card_busy, }; /*****************************************************************************\ @@ -2010,29 +2055,9 @@ static const struct mmc_host_ops sdhci_ops = { static void sdhci_tasklet_card(unsigned long param) { - struct sdhci_host *host; - unsigned long flags; - - host = (struct sdhci_host*)param; - - spin_lock_irqsave(&host->lock, flags); - - /* Check host->mrq first in case we are runtime suspended */ - if (host->mrq && - !(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) { - pr_err("%s: Card removed during transfer!\n", - mmc_hostname(host->mmc)); - pr_err("%s: Resetting controller.\n", - mmc_hostname(host->mmc)); - - sdhci_reset(host, SDHCI_RESET_CMD); - sdhci_reset(host, SDHCI_RESET_DATA); - - host->mrq->cmd->error = -ENOMEDIUM; - tasklet_schedule(&host->finish_tasklet); - } + struct sdhci_host *host = (struct sdhci_host*)param; - spin_unlock_irqrestore(&host->lock, flags); + sdhci_card_event(host->mmc); mmc_detect_change(host->mmc, msecs_to_jiffies(200)); } @@ -2071,14 +2096,9 @@ static void sdhci_tasklet_finish(unsigned long param) (host->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST))) { /* Some controllers need this kick or reset won't work here */ - if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) { - unsigned int clock; - + if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) /* This is to force an update */ - clock = host->clock; - host->clock = 0; - sdhci_set_clock(host, clock); - } + sdhci_update_clock(host); /* Spec says we should do both at the same time, but Ricoh controllers do not like that. */ @@ -2279,6 +2299,8 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) pr_err("%s: ADMA error\n", mmc_hostname(host->mmc)); sdhci_show_adma_error(host); host->data->error = -EIO; + if (host->ops->adma_workaround) + host->ops->adma_workaround(host, intmask); } if (host->data->error) @@ -2444,6 +2466,32 @@ out: \*****************************************************************************/ #ifdef CONFIG_PM +void sdhci_enable_irq_wakeups(struct sdhci_host *host) +{ + u8 val; + u8 mask = SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE + | SDHCI_WAKE_ON_INT; + + val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL); + val |= mask ; + /* Avoid fake wake up */ + if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) + val &= ~(SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE); + sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL); +} +EXPORT_SYMBOL_GPL(sdhci_enable_irq_wakeups); + +void sdhci_disable_irq_wakeups(struct sdhci_host *host) +{ + u8 val; + u8 mask = SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE + | SDHCI_WAKE_ON_INT; + + val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL); + val &= ~mask; + sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL); +} +EXPORT_SYMBOL_GPL(sdhci_disable_irq_wakeups); int sdhci_suspend_host(struct sdhci_host *host) { @@ -2473,8 +2521,13 @@ int sdhci_suspend_host(struct sdhci_host *host) return ret; } - free_irq(host->irq, host); - + if (!device_may_wakeup(mmc_dev(host->mmc))) { + sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK); + free_irq(host->irq, host); + } else { + sdhci_enable_irq_wakeups(host); + enable_irq_wake(host->irq); + } return ret; } @@ -2489,10 +2542,15 @@ int sdhci_resume_host(struct sdhci_host *host) host->ops->enable_dma(host); } - ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED, - mmc_hostname(host->mmc), host); - if (ret) - return ret; + if (!device_may_wakeup(mmc_dev(host->mmc))) { + ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED, + mmc_hostname(host->mmc), host); + if (ret) + return ret; + } else { + sdhci_disable_irq_wakeups(host); + disable_irq_wake(host->irq); + } if ((host->mmc->pm_flags & MMC_PM_KEEP_POWER) && (host->quirks2 & SDHCI_QUIRK2_HOST_OFF_CARD_ON)) { @@ -2520,17 +2578,6 @@ int sdhci_resume_host(struct sdhci_host *host) } EXPORT_SYMBOL_GPL(sdhci_resume_host); - -void sdhci_enable_irq_wakeups(struct sdhci_host *host) -{ - u8 val; - val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL); - val |= SDHCI_WAKE_ON_INT; - sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL); -} - -EXPORT_SYMBOL_GPL(sdhci_enable_irq_wakeups); - #endif /* CONFIG_PM */ #ifdef CONFIG_PM_RUNTIME @@ -2589,8 +2636,12 @@ int sdhci_runtime_resume_host(struct sdhci_host *host) sdhci_do_set_ios(host, &host->mmc->ios); sdhci_do_start_signal_voltage_switch(host, &host->mmc->ios); - if (host_flags & SDHCI_PV_ENABLED) - sdhci_do_enable_preset_value(host, true); + if ((host_flags & SDHCI_PV_ENABLED) && + !(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN)) { + spin_lock_irqsave(&host->lock, flags); + sdhci_enable_preset_value(host, true); + spin_unlock_irqrestore(&host->lock, flags); + } /* Set the re-tuning expiration flag */ if (host->flags & SDHCI_USING_RETUNING_TIMER) @@ -2837,6 +2888,9 @@ int sdhci_add_host(struct sdhci_host *host) if (!(host->quirks & SDHCI_QUIRK_FORCE_1_BIT_DATA)) mmc->caps |= MMC_CAP_4_BIT_DATA; + if (host->quirks2 & SDHCI_QUIRK2_HOST_NO_CMD23) + mmc->caps &= ~MMC_CAP_CMD23; + if (caps[0] & SDHCI_CAN_DO_HISPD) mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED; @@ -2846,13 +2900,22 @@ int sdhci_add_host(struct sdhci_host *host) /* If vqmmc regulator and no 1.8V signalling, then there's no UHS */ host->vqmmc = regulator_get(mmc_dev(mmc), "vqmmc"); - if (IS_ERR(host->vqmmc)) { - pr_info("%s: no vqmmc regulator found\n", mmc_hostname(mmc)); - host->vqmmc = NULL; - } - else if (regulator_is_supported_voltage(host->vqmmc, 1800000, 1800000)) + if (IS_ERR_OR_NULL(host->vqmmc)) { + if (PTR_ERR(host->vqmmc) < 0) { + pr_info("%s: no vqmmc regulator found\n", + mmc_hostname(mmc)); + host->vqmmc = NULL; + } + } else { regulator_enable(host->vqmmc); - else + if (!regulator_is_supported_voltage(host->vqmmc, 1700000, + 1950000)) + caps[1] &= ~(SDHCI_SUPPORT_SDR104 | + SDHCI_SUPPORT_SDR50 | + SDHCI_SUPPORT_DDR50); + } + + if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V) caps[1] &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_DDR50); @@ -2904,24 +2967,28 @@ int sdhci_add_host(struct sdhci_host *host) ocr_avail = 0; host->vmmc = regulator_get(mmc_dev(mmc), "vmmc"); - if (IS_ERR(host->vmmc)) { - pr_info("%s: no vmmc regulator found\n", mmc_hostname(mmc)); - host->vmmc = NULL; - } else - regulator_enable(host->vmmc); + if (IS_ERR_OR_NULL(host->vmmc)) { + if (PTR_ERR(host->vmmc) < 0) { + pr_info("%s: no vmmc regulator found\n", + mmc_hostname(mmc)); + host->vmmc = NULL; + } + } #ifdef CONFIG_REGULATOR - if (host->vmmc) { - ret = regulator_is_supported_voltage(host->vmmc, 3300000, - 3300000); + /* + * Voltage range check makes sense only if regulator reports + * any voltage value. + */ + if (host->vmmc && regulator_get_voltage(host->vmmc) > 0) { + ret = regulator_is_supported_voltage(host->vmmc, 2700000, + 3600000); if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_330))) caps[0] &= ~SDHCI_CAN_VDD_330; - ret = regulator_is_supported_voltage(host->vmmc, 3000000, - 3000000); if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_300))) caps[0] &= ~SDHCI_CAN_VDD_300; - ret = regulator_is_supported_voltage(host->vmmc, 1800000, - 1800000); + ret = regulator_is_supported_voltage(host->vmmc, 1700000, + 1950000); if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_180))) caps[0] &= ~SDHCI_CAN_VDD_180; } @@ -3116,6 +3183,7 @@ int sdhci_add_host(struct sdhci_host *host) #ifdef SDHCI_USE_LEDS_CLASS reset: sdhci_reset(host, SDHCI_RESET_ALL); + sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK); free_irq(host->irq, host); #endif untasklet: @@ -3158,6 +3226,7 @@ void sdhci_remove_host(struct sdhci_host *host, int dead) if (!dead) sdhci_reset(host, SDHCI_RESET_ALL); + sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK); free_irq(host->irq, host); del_timer_sync(&host->timer); diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 97653ea8942b..379e09d9f3c1 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -120,6 +120,7 @@ #define SDHCI_SIGNAL_ENABLE 0x38 #define SDHCI_INT_RESPONSE 0x00000001 #define SDHCI_INT_DATA_END 0x00000002 +#define SDHCI_INT_BLK_GAP 0x00000004 #define SDHCI_INT_DMA_END 0x00000008 #define SDHCI_INT_SPACE_AVAIL 0x00000010 #define SDHCI_INT_DATA_AVAIL 0x00000020 @@ -146,7 +147,8 @@ #define SDHCI_INT_DATA_MASK (SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \ SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \ SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \ - SDHCI_INT_DATA_END_BIT | SDHCI_INT_ADMA_ERROR) + SDHCI_INT_DATA_END_BIT | SDHCI_INT_ADMA_ERROR | \ + SDHCI_INT_BLK_GAP) #define SDHCI_INT_ALL_MASK ((unsigned int)-1) #define SDHCI_ACMD12_ERR 0x3C @@ -227,6 +229,18 @@ /* 60-FB reserved */ +#define SDHCI_PRESET_FOR_SDR12 0x66 +#define SDHCI_PRESET_FOR_SDR25 0x68 +#define SDHCI_PRESET_FOR_SDR50 0x6A +#define SDHCI_PRESET_FOR_SDR104 0x6C +#define SDHCI_PRESET_FOR_DDR50 0x6E +#define SDHCI_PRESET_DRV_MASK 0xC000 +#define SDHCI_PRESET_DRV_SHIFT 14 +#define SDHCI_PRESET_CLKGEN_SEL_MASK 0x400 +#define SDHCI_PRESET_CLKGEN_SEL_SHIFT 10 +#define SDHCI_PRESET_SDCLK_FREQ_MASK 0x3FF +#define SDHCI_PRESET_SDCLK_FREQ_SHIFT 0 + #define SDHCI_SLOT_INT_STATUS 0xFC #define SDHCI_HOST_VERSION 0xFE @@ -267,7 +281,7 @@ struct sdhci_ops { unsigned int (*get_max_clock)(struct sdhci_host *host); unsigned int (*get_min_clock)(struct sdhci_host *host); unsigned int (*get_timeout_clock)(struct sdhci_host *host); - int (*platform_8bit_width)(struct sdhci_host *host, + int (*platform_bus_width)(struct sdhci_host *host, int width); void (*platform_send_init_74_clocks)(struct sdhci_host *host, u8 power_mode); @@ -278,6 +292,8 @@ struct sdhci_ops { void (*hw_reset)(struct sdhci_host *host); void (*platform_suspend)(struct sdhci_host *host); void (*platform_resume)(struct sdhci_host *host); + void (*adma_workaround)(struct sdhci_host *host, u32 intmask); + void (*platform_init)(struct sdhci_host *host); }; #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c index 11d2bc3b51d5..ba76a532ae30 100644 --- a/drivers/mmc/host/sh_mmcif.c +++ b/drivers/mmc/host/sh_mmcif.c @@ -56,6 +56,7 @@ #include <linux/mmc/sh_mmcif.h> #include <linux/mmc/slot-gpio.h> #include <linux/mod_devicetable.h> +#include <linux/mutex.h> #include <linux/pagemap.h> #include <linux/platform_device.h> #include <linux/pm_qos.h> @@ -88,6 +89,7 @@ #define CMD_SET_TBIT (1 << 7) /* 1: tran mission bit "Low" */ #define CMD_SET_OPDM (1 << 6) /* 1: open/drain */ #define CMD_SET_CCSH (1 << 5) +#define CMD_SET_DARS (1 << 2) /* Dual Data Rate */ #define CMD_SET_DATW_1 ((0 << 1) | (0 << 0)) /* 1bit */ #define CMD_SET_DATW_4 ((0 << 1) | (1 << 0)) /* 4bit */ #define CMD_SET_DATW_8 ((1 << 1) | (0 << 0)) /* 8bit */ @@ -127,6 +129,10 @@ INT_CCSTO | INT_CRCSTO | INT_WDATTO | \ INT_RDATTO | INT_RBSYTO | INT_RSPTO) +#define INT_ALL (INT_RBSYE | INT_CRSPE | INT_BUFREN | \ + INT_BUFWEN | INT_CMD12DRE | INT_BUFRE | \ + INT_DTRANE | INT_CMD12RBE | INT_CMD12CRE) + /* CE_INT_MASK */ #define MASK_ALL 0x00000000 #define MASK_MCCSDE (1 << 29) @@ -158,6 +164,11 @@ MASK_MCCSTO | MASK_MCRCSTO | MASK_MWDATTO | \ MASK_MRDATTO | MASK_MRBSYTO | MASK_MRSPTO) +#define MASK_CLEAN (INT_ERR_STS | MASK_MRBSYE | MASK_MCRSPE | \ + MASK_MBUFREN | MASK_MBUFWEN | \ + MASK_MCMD12DRE | MASK_MBUFRE | MASK_MDTRANE | \ + MASK_MCMD12RBE | MASK_MCMD12CRE) + /* CE_HOST_STS1 */ #define STS1_CMDSEQ (1 << 31) @@ -195,6 +206,7 @@ enum mmcif_state { STATE_IDLE, STATE_REQUEST, STATE_IOS, + STATE_TIMEOUT, }; enum mmcif_wait_for { @@ -216,6 +228,7 @@ struct sh_mmcif_host { struct clk *hclk; unsigned int clk; int bus_width; + unsigned char timing; bool sd_error; bool dying; long timeout; @@ -230,6 +243,7 @@ struct sh_mmcif_host { int sg_blkidx; bool power; bool card_present; + struct mutex thread_lock; /* DMA support */ struct dma_chan *chan_rx; @@ -253,23 +267,14 @@ static inline void sh_mmcif_bitclr(struct sh_mmcif_host *host, static void mmcif_dma_complete(void *arg) { struct sh_mmcif_host *host = arg; - struct mmc_data *data = host->mrq->data; + struct mmc_request *mrq = host->mrq; dev_dbg(&host->pd->dev, "Command completed\n"); - if (WARN(!data, "%s: NULL data in DMA completion!\n", + if (WARN(!mrq || !mrq->data, "%s: NULL data in DMA completion!\n", dev_name(&host->pd->dev))) return; - if (data->flags & MMC_DATA_READ) - dma_unmap_sg(host->chan_rx->device->dev, - data->sg, data->sg_len, - DMA_FROM_DEVICE); - else - dma_unmap_sg(host->chan_tx->device->dev, - data->sg, data->sg_len, - DMA_TO_DEVICE); - complete(&host->dma_complete); } @@ -423,8 +428,6 @@ static void sh_mmcif_request_dma(struct sh_mmcif_host *host, if (ret < 0) goto ecfgrx; - init_completion(&host->dma_complete); - return; ecfgrx: @@ -520,13 +523,16 @@ static int sh_mmcif_error_manage(struct sh_mmcif_host *host) } if (state2 & STS2_CRC_ERR) { - dev_dbg(&host->pd->dev, ": CRC error\n"); + dev_err(&host->pd->dev, " CRC error: state %u, wait %u\n", + host->state, host->wait_for); ret = -EIO; } else if (state2 & STS2_TIMEOUT_ERR) { - dev_dbg(&host->pd->dev, ": Timeout\n"); + dev_err(&host->pd->dev, " Timeout: state %u, wait %u\n", + host->state, host->wait_for); ret = -ETIMEDOUT; } else { - dev_dbg(&host->pd->dev, ": End/Index error\n"); + dev_dbg(&host->pd->dev, " End/Index error: state %u, wait %u\n", + host->state, host->wait_for); ret = -EIO; } return ret; @@ -549,10 +555,7 @@ static bool sh_mmcif_next_block(struct sh_mmcif_host *host, u32 *p) host->pio_ptr = p; } - if (host->sg_idx == data->sg_len) - return false; - - return true; + return host->sg_idx != data->sg_len; } static void sh_mmcif_single_read(struct sh_mmcif_host *host, @@ -562,7 +565,6 @@ static void sh_mmcif_single_read(struct sh_mmcif_host *host, BLOCK_SIZE_MASK) + 3; host->wait_for = MMCIF_WAIT_FOR_READ; - schedule_delayed_work(&host->timeout_work, host->timeout); /* buf read enable */ sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN); @@ -576,6 +578,7 @@ static bool sh_mmcif_read_block(struct sh_mmcif_host *host) if (host->sd_error) { data->error = sh_mmcif_error_manage(host); + dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, data->error); return false; } @@ -604,7 +607,7 @@ static void sh_mmcif_multi_read(struct sh_mmcif_host *host, host->sg_idx = 0; host->sg_blkidx = 0; host->pio_ptr = sg_virt(data->sg); - schedule_delayed_work(&host->timeout_work, host->timeout); + sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN); } @@ -616,6 +619,7 @@ static bool sh_mmcif_mread_block(struct sh_mmcif_host *host) if (host->sd_error) { data->error = sh_mmcif_error_manage(host); + dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, data->error); return false; } @@ -627,7 +631,6 @@ static bool sh_mmcif_mread_block(struct sh_mmcif_host *host) if (!sh_mmcif_next_block(host, p)) return false; - schedule_delayed_work(&host->timeout_work, host->timeout); sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN); return true; @@ -640,7 +643,6 @@ static void sh_mmcif_single_write(struct sh_mmcif_host *host, BLOCK_SIZE_MASK) + 3; host->wait_for = MMCIF_WAIT_FOR_WRITE; - schedule_delayed_work(&host->timeout_work, host->timeout); /* buf write enable */ sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN); @@ -654,6 +656,7 @@ static bool sh_mmcif_write_block(struct sh_mmcif_host *host) if (host->sd_error) { data->error = sh_mmcif_error_manage(host); + dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, data->error); return false; } @@ -682,7 +685,7 @@ static void sh_mmcif_multi_write(struct sh_mmcif_host *host, host->sg_idx = 0; host->sg_blkidx = 0; host->pio_ptr = sg_virt(data->sg); - schedule_delayed_work(&host->timeout_work, host->timeout); + sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN); } @@ -694,6 +697,7 @@ static bool sh_mmcif_mwrite_block(struct sh_mmcif_host *host) if (host->sd_error) { data->error = sh_mmcif_error_manage(host); + dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, data->error); return false; } @@ -705,7 +709,6 @@ static bool sh_mmcif_mwrite_block(struct sh_mmcif_host *host) if (!sh_mmcif_next_block(host, p)) return false; - schedule_delayed_work(&host->timeout_work, host->timeout); sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN); return true; @@ -756,6 +759,7 @@ static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host, } switch (opc) { /* RBSY */ + case MMC_SLEEP_AWAKE: case MMC_SWITCH: case MMC_STOP_TRANSMISSION: case MMC_SET_WRITE_PROT: @@ -781,6 +785,17 @@ static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host, dev_err(&host->pd->dev, "Unsupported bus width.\n"); break; } + switch (host->timing) { + case MMC_TIMING_UHS_DDR50: + /* + * MMC core will only set this timing, if the host + * advertises the MMC_CAP_UHS_DDR50 capability. MMCIF + * implementations with this capability, e.g. sh73a0, + * will have to set it in their platform data. + */ + tmp |= CMD_SET_DARS; + break; + } } /* DWEN */ if (opc == MMC_WRITE_BLOCK || opc == MMC_WRITE_MULTIPLE_BLOCK) @@ -824,7 +839,7 @@ static int sh_mmcif_data_trans(struct sh_mmcif_host *host, sh_mmcif_single_read(host, mrq); return 0; default: - dev_err(&host->pd->dev, "UNSUPPORTED CMD = d'%08d\n", opc); + dev_err(&host->pd->dev, "Unsupported CMD%d\n", opc); return -EINVAL; } } @@ -838,6 +853,7 @@ static void sh_mmcif_start_cmd(struct sh_mmcif_host *host, switch (opc) { /* response busy check */ + case MMC_SLEEP_AWAKE: case MMC_SWITCH: case MMC_STOP_TRANSMISSION: case MMC_SET_WRITE_PROT: @@ -885,7 +901,6 @@ static void sh_mmcif_stop_cmd(struct sh_mmcif_host *host, } host->wait_for = MMCIF_WAIT_FOR_STOP; - schedule_delayed_work(&host->timeout_work, host->timeout); } static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq) @@ -895,6 +910,7 @@ static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq) spin_lock_irqsave(&host->lock, flags); if (host->state != STATE_IDLE) { + dev_dbg(&host->pd->dev, "%s() rejected, state %u\n", __func__, host->state); spin_unlock_irqrestore(&host->lock, flags); mrq->cmd->error = -EAGAIN; mmc_request_done(mmc, mrq); @@ -911,6 +927,7 @@ static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq) if ((mrq->cmd->flags & MMC_CMD_MASK) != MMC_CMD_BCR) break; case MMC_APP_CMD: + case SD_IO_RW_DIRECT: host->state = STATE_IDLE; mrq->cmd->error = -ETIMEDOUT; mmc_request_done(mmc, mrq); @@ -957,6 +974,7 @@ static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) spin_lock_irqsave(&host->lock, flags); if (host->state != STATE_IDLE) { + dev_dbg(&host->pd->dev, "%s() rejected, state %u\n", __func__, host->state); spin_unlock_irqrestore(&host->lock, flags); return; } @@ -981,7 +999,7 @@ static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) } } if (host->power) { - pm_runtime_put(&host->pd->dev); + pm_runtime_put_sync(&host->pd->dev); clk_disable(host->hclk); host->power = false; if (ios->power_mode == MMC_POWER_OFF) @@ -1001,6 +1019,7 @@ static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) sh_mmcif_clock_control(host, ios->clock); } + host->timing = ios->timing; host->bus_width = ios->bus_width; host->state = STATE_IDLE; } @@ -1038,14 +1057,14 @@ static bool sh_mmcif_end_cmd(struct sh_mmcif_host *host) case MMC_SELECT_CARD: case MMC_APP_CMD: cmd->error = -ETIMEDOUT; - host->sd_error = false; break; default: cmd->error = sh_mmcif_error_manage(host); - dev_dbg(&host->pd->dev, "Cmd(d'%d) error %d\n", - cmd->opcode, cmd->error); break; } + dev_dbg(&host->pd->dev, "CMD%d error %d\n", + cmd->opcode, cmd->error); + host->sd_error = false; return false; } if (!(cmd->flags & MMC_RSP_PRESENT)) { @@ -1058,6 +1077,12 @@ static bool sh_mmcif_end_cmd(struct sh_mmcif_host *host) if (!data) return false; + /* + * Completion can be signalled from DMA callback and error, so, have to + * reset here, before setting .dma_active + */ + init_completion(&host->dma_complete); + if (data->flags & MMC_DATA_READ) { if (host->chan_rx) sh_mmcif_start_dma_rx(host); @@ -1068,34 +1093,47 @@ static bool sh_mmcif_end_cmd(struct sh_mmcif_host *host) if (!host->dma_active) { data->error = sh_mmcif_data_trans(host, host->mrq, cmd->opcode); - if (!data->error) - return true; - return false; + return !data->error; } /* Running in the IRQ thread, can sleep */ time = wait_for_completion_interruptible_timeout(&host->dma_complete, host->timeout); + + if (data->flags & MMC_DATA_READ) + dma_unmap_sg(host->chan_rx->device->dev, + data->sg, data->sg_len, + DMA_FROM_DEVICE); + else + dma_unmap_sg(host->chan_tx->device->dev, + data->sg, data->sg_len, + DMA_TO_DEVICE); + if (host->sd_error) { dev_err(host->mmc->parent, "Error IRQ while waiting for DMA completion!\n"); /* Woken up by an error IRQ: abort DMA */ - if (data->flags & MMC_DATA_READ) - dmaengine_terminate_all(host->chan_rx); - else - dmaengine_terminate_all(host->chan_tx); data->error = sh_mmcif_error_manage(host); } else if (!time) { + dev_err(host->mmc->parent, "DMA timeout!\n"); data->error = -ETIMEDOUT; } else if (time < 0) { + dev_err(host->mmc->parent, + "wait_for_completion_...() error %ld!\n", time); data->error = time; } sh_mmcif_bitclr(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAREN | BUF_ACC_DMAWEN); host->dma_active = false; - if (data->error) + if (data->error) { data->bytes_xfered = 0; + /* Abort DMA */ + if (data->flags & MMC_DATA_READ) + dmaengine_terminate_all(host->chan_rx); + else + dmaengine_terminate_all(host->chan_tx); + } return false; } @@ -1103,11 +1141,21 @@ static bool sh_mmcif_end_cmd(struct sh_mmcif_host *host) static irqreturn_t sh_mmcif_irqt(int irq, void *dev_id) { struct sh_mmcif_host *host = dev_id; - struct mmc_request *mrq = host->mrq; - struct mmc_data *data = mrq->data; + struct mmc_request *mrq; + bool wait = false; cancel_delayed_work_sync(&host->timeout_work); + mutex_lock(&host->thread_lock); + + mrq = host->mrq; + if (!mrq) { + dev_dbg(&host->pd->dev, "IRQ thread state %u, wait %u: NULL mrq!\n", + host->state, host->wait_for); + mutex_unlock(&host->thread_lock); + return IRQ_HANDLED; + } + /* * All handlers return true, if processing continues, and false, if the * request has to be completed - successfully or not @@ -1115,35 +1163,32 @@ static irqreturn_t sh_mmcif_irqt(int irq, void *dev_id) switch (host->wait_for) { case MMCIF_WAIT_FOR_REQUEST: /* We're too late, the timeout has already kicked in */ + mutex_unlock(&host->thread_lock); return IRQ_HANDLED; case MMCIF_WAIT_FOR_CMD: - if (sh_mmcif_end_cmd(host)) - /* Wait for data */ - return IRQ_HANDLED; + /* Wait for data? */ + wait = sh_mmcif_end_cmd(host); break; case MMCIF_WAIT_FOR_MREAD: - if (sh_mmcif_mread_block(host)) - /* Wait for more data */ - return IRQ_HANDLED; + /* Wait for more data? */ + wait = sh_mmcif_mread_block(host); break; case MMCIF_WAIT_FOR_READ: - if (sh_mmcif_read_block(host)) - /* Wait for data end */ - return IRQ_HANDLED; + /* Wait for data end? */ + wait = sh_mmcif_read_block(host); break; case MMCIF_WAIT_FOR_MWRITE: - if (sh_mmcif_mwrite_block(host)) - /* Wait data to write */ - return IRQ_HANDLED; + /* Wait data to write? */ + wait = sh_mmcif_mwrite_block(host); break; case MMCIF_WAIT_FOR_WRITE: - if (sh_mmcif_write_block(host)) - /* Wait for data end */ - return IRQ_HANDLED; + /* Wait for data end? */ + wait = sh_mmcif_write_block(host); break; case MMCIF_WAIT_FOR_STOP: if (host->sd_error) { mrq->stop->error = sh_mmcif_error_manage(host); + dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, mrq->stop->error); break; } sh_mmcif_get_cmd12response(host, mrq->stop); @@ -1151,22 +1196,35 @@ static irqreturn_t sh_mmcif_irqt(int irq, void *dev_id) break; case MMCIF_WAIT_FOR_READ_END: case MMCIF_WAIT_FOR_WRITE_END: - if (host->sd_error) - data->error = sh_mmcif_error_manage(host); + if (host->sd_error) { + mrq->data->error = sh_mmcif_error_manage(host); + dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, mrq->data->error); + } break; default: BUG(); } + if (wait) { + schedule_delayed_work(&host->timeout_work, host->timeout); + /* Wait for more data */ + mutex_unlock(&host->thread_lock); + return IRQ_HANDLED; + } + if (host->wait_for != MMCIF_WAIT_FOR_STOP) { + struct mmc_data *data = mrq->data; if (!mrq->cmd->error && data && !data->error) data->bytes_xfered = data->blocks * data->blksz; if (mrq->stop && !mrq->cmd->error && (!data || !data->error)) { sh_mmcif_stop_cmd(host, mrq); - if (!mrq->stop->error) + if (!mrq->stop->error) { + schedule_delayed_work(&host->timeout_work, host->timeout); + mutex_unlock(&host->thread_lock); return IRQ_HANDLED; + } } } @@ -1175,6 +1233,8 @@ static irqreturn_t sh_mmcif_irqt(int irq, void *dev_id) host->mrq = NULL; mmc_request_done(host->mmc, mrq); + mutex_unlock(&host->thread_lock); + return IRQ_HANDLED; } @@ -1182,60 +1242,22 @@ static irqreturn_t sh_mmcif_intr(int irq, void *dev_id) { struct sh_mmcif_host *host = dev_id; u32 state; - int err = 0; state = sh_mmcif_readl(host->addr, MMCIF_CE_INT); + sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state); + sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state & MASK_CLEAN); - if (state & INT_ERR_STS) { - /* error interrupts - process first */ - sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state); - err = 1; - } else if (state & INT_RBSYE) { - sh_mmcif_writel(host->addr, MMCIF_CE_INT, - ~(INT_RBSYE | INT_CRSPE)); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MRBSYE); - } else if (state & INT_CRSPE) { - sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_CRSPE); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCRSPE); - } else if (state & INT_BUFREN) { - sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFREN); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFREN); - } else if (state & INT_BUFWEN) { - sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFWEN); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN); - } else if (state & INT_CMD12DRE) { - sh_mmcif_writel(host->addr, MMCIF_CE_INT, - ~(INT_CMD12DRE | INT_CMD12RBE | - INT_CMD12CRE | INT_BUFRE)); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCMD12DRE); - } else if (state & INT_BUFRE) { - sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFRE); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFRE); - } else if (state & INT_DTRANE) { - sh_mmcif_writel(host->addr, MMCIF_CE_INT, - ~(INT_CMD12DRE | INT_CMD12RBE | - INT_CMD12CRE | INT_DTRANE)); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MDTRANE); - } else if (state & INT_CMD12RBE) { - sh_mmcif_writel(host->addr, MMCIF_CE_INT, - ~(INT_CMD12RBE | INT_CMD12CRE)); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCMD12RBE); - } else { - dev_dbg(&host->pd->dev, "Unsupported interrupt: 0x%x\n", state); - sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state); - err = 1; - } - if (err) { + if (state & ~MASK_CLEAN) + dev_dbg(&host->pd->dev, "IRQ state = 0x%08x incompletely cleared\n", + state); + + if (state & INT_ERR_STS || state & ~INT_ALL) { host->sd_error = true; - dev_dbg(&host->pd->dev, "int err state = %08x\n", state); - } - if (host->state == STATE_IDLE) { - dev_info(&host->pd->dev, "Spurious IRQ status 0x%x", state); - return IRQ_HANDLED; + dev_dbg(&host->pd->dev, "int err state = 0x%08x\n", state); } if (state & ~(INT_CMD12RBE | INT_CMD12CRE)) { + if (!host->mrq) + dev_dbg(&host->pd->dev, "NULL IRQ state = 0x%08x\n", state); if (!host->dma_active) return IRQ_WAKE_THREAD; else if (host->sd_error) @@ -1252,11 +1274,24 @@ static void mmcif_timeout_work(struct work_struct *work) struct delayed_work *d = container_of(work, struct delayed_work, work); struct sh_mmcif_host *host = container_of(d, struct sh_mmcif_host, timeout_work); struct mmc_request *mrq = host->mrq; + unsigned long flags; if (host->dying) /* Don't run after mmc_remove_host() */ return; + dev_err(&host->pd->dev, "Timeout waiting for %u on CMD%u\n", + host->wait_for, mrq->cmd->opcode); + + spin_lock_irqsave(&host->lock, flags); + if (host->state == STATE_IDLE) { + spin_unlock_irqrestore(&host->lock, flags); + return; + } + + host->state = STATE_TIMEOUT; + spin_unlock_irqrestore(&host->lock, flags); + /* * Handle races with cancel_delayed_work(), unless * cancel_delayed_work_sync() is used @@ -1302,7 +1337,7 @@ static void sh_mmcif_init_ocr(struct sh_mmcif_host *host) dev_warn(mmc_dev(mmc), "Platform OCR mask is ignored\n"); } -static int __devinit sh_mmcif_probe(struct platform_device *pdev) +static int sh_mmcif_probe(struct platform_device *pdev) { int ret = 0, irq[2]; struct mmc_host *mmc; @@ -1310,11 +1345,11 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev) struct sh_mmcif_plat_data *pd = pdev->dev.platform_data; struct resource *res; void __iomem *reg; - char clk_name[8]; + const char *name; irq[0] = platform_get_irq(pdev, 0); irq[1] = platform_get_irq(pdev, 1); - if (irq[0] < 0 || irq[1] < 0) { + if (irq[0] < 0) { dev_err(&pdev->dev, "Get irq error\n"); return -ENXIO; } @@ -1334,10 +1369,11 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev) ret = -ENOMEM; goto ealloch; } + mmc_of_parse(mmc); host = mmc_priv(mmc); host->mmc = mmc; host->addr = reg; - host->timeout = 1000; + host->timeout = msecs_to_jiffies(1000); host->pd = pdev; @@ -1346,7 +1382,7 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev) mmc->ops = &sh_mmcif_ops; sh_mmcif_init_ocr(host); - mmc->caps = MMC_CAP_MMC_HIGHSPEED; + mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_WAIT_WHILE_BUSY; if (pd && pd->caps) mmc->caps |= pd->caps; mmc->max_segs = 32; @@ -1360,11 +1396,10 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); host->power = false; - snprintf(clk_name, sizeof(clk_name), "mmc%d", pdev->id); - host->hclk = clk_get(&pdev->dev, clk_name); + host->hclk = clk_get(&pdev->dev, NULL); if (IS_ERR(host->hclk)) { ret = PTR_ERR(host->hclk); - dev_err(&pdev->dev, "cannot get clock \"%s\": %d\n", clk_name, ret); + dev_err(&pdev->dev, "cannot get clock: %d\n", ret); goto eclkget; } ret = sh_mmcif_clk_update(host); @@ -1380,15 +1415,19 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev) sh_mmcif_sync_reset(host); sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL); - ret = request_threaded_irq(irq[0], sh_mmcif_intr, sh_mmcif_irqt, 0, "sh_mmc:error", host); + name = irq[1] < 0 ? dev_name(&pdev->dev) : "sh_mmc:error"; + ret = request_threaded_irq(irq[0], sh_mmcif_intr, sh_mmcif_irqt, 0, name, host); if (ret) { - dev_err(&pdev->dev, "request_irq error (sh_mmc:error)\n"); + dev_err(&pdev->dev, "request_irq error (%s)\n", name); goto ereqirq0; } - ret = request_threaded_irq(irq[1], sh_mmcif_intr, sh_mmcif_irqt, 0, "sh_mmc:int", host); - if (ret) { - dev_err(&pdev->dev, "request_irq error (sh_mmc:int)\n"); - goto ereqirq1; + if (irq[1] >= 0) { + ret = request_threaded_irq(irq[1], sh_mmcif_intr, sh_mmcif_irqt, + 0, "sh_mmc:int", host); + if (ret) { + dev_err(&pdev->dev, "request_irq error (sh_mmc:int)\n"); + goto ereqirq1; + } } if (pd && pd->use_cd_gpio) { @@ -1397,6 +1436,8 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev) goto erqcd; } + mutex_init(&host->thread_lock); + clk_disable(host->hclk); ret = mmc_add_host(mmc); if (ret < 0) @@ -1410,10 +1451,9 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev) return ret; emmcaddh: - if (pd && pd->use_cd_gpio) - mmc_gpio_free_cd(mmc); erqcd: - free_irq(irq[1], host); + if (irq[1] >= 0) + free_irq(irq[1], host); ereqirq1: free_irq(irq[0], host); ereqirq0: @@ -1430,10 +1470,9 @@ ealloch: return ret; } -static int __devexit sh_mmcif_remove(struct platform_device *pdev) +static int sh_mmcif_remove(struct platform_device *pdev) { struct sh_mmcif_host *host = platform_get_drvdata(pdev); - struct sh_mmcif_plat_data *pd = pdev->dev.platform_data; int irq[2]; host->dying = true; @@ -1442,9 +1481,6 @@ static int __devexit sh_mmcif_remove(struct platform_device *pdev) dev_pm_qos_hide_latency_limit(&pdev->dev); - if (pd && pd->use_cd_gpio) - mmc_gpio_free_cd(host->mmc); - mmc_remove_host(host->mmc); sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL); @@ -1462,13 +1498,14 @@ static int __devexit sh_mmcif_remove(struct platform_device *pdev) irq[1] = platform_get_irq(pdev, 1); free_irq(irq[0], host); - free_irq(irq[1], host); + if (irq[1] >= 0) + free_irq(irq[1], host); platform_set_drvdata(pdev, NULL); + clk_disable(host->hclk); mmc_free_host(host->mmc); pm_runtime_put_sync(&pdev->dev); - clk_disable(host->hclk); pm_runtime_disable(&pdev->dev); return 0; diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c index 0bdc146178db..fe90853900b4 100644 --- a/drivers/mmc/host/sh_mobile_sdhi.c +++ b/drivers/mmc/host/sh_mobile_sdhi.c @@ -23,6 +23,7 @@ #include <linux/slab.h> #include <linux/mod_devicetable.h> #include <linux/module.h> +#include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/mmc/host.h> #include <linux/mmc/sh_mobile_sdhi.h> @@ -32,6 +33,16 @@ #include "tmio_mmc.h" +struct sh_mobile_sdhi_of_data { + unsigned long tmio_flags; +}; + +static const struct sh_mobile_sdhi_of_data sh_mobile_sdhi_of_cfg[] = { + { + .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT, + }, +}; + struct sh_mobile_sdhi { struct clk *clk; struct tmio_mmc_data mmc_data; @@ -117,17 +128,26 @@ static const struct sh_mobile_sdhi_ops sdhi_ops = { .cd_wakeup = sh_mobile_sdhi_cd_wakeup, }; -static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev) +static const struct of_device_id sh_mobile_sdhi_of_match[] = { + { .compatible = "renesas,shmobile-sdhi" }, + { .compatible = "renesas,sh7372-sdhi" }, + { .compatible = "renesas,r8a7740-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], }, + {}, +}; +MODULE_DEVICE_TABLE(of, sh_mobile_sdhi_of_match); + +static int sh_mobile_sdhi_probe(struct platform_device *pdev) { + const struct of_device_id *of_id = + of_match_device(sh_mobile_sdhi_of_match, &pdev->dev); struct sh_mobile_sdhi *priv; struct tmio_mmc_data *mmc_data; struct sh_mobile_sdhi_info *p = pdev->dev.platform_data; struct tmio_mmc_host *host; - char clk_name[8]; int irq, ret, i = 0; bool multiplexed_isr = true; - priv = kzalloc(sizeof(struct sh_mobile_sdhi), GFP_KERNEL); + priv = devm_kzalloc(&pdev->dev, sizeof(struct sh_mobile_sdhi), GFP_KERNEL); if (priv == NULL) { dev_err(&pdev->dev, "kzalloc failed\n"); return -ENOMEM; @@ -136,29 +156,26 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev) mmc_data = &priv->mmc_data; if (p) { - p->pdata = mmc_data; if (p->init) { ret = p->init(pdev, &sdhi_ops); if (ret) - goto einit; + return ret; } } - snprintf(clk_name, sizeof(clk_name), "sdhi%d", pdev->id); - priv->clk = clk_get(&pdev->dev, clk_name); + priv->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(priv->clk)) { - dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name); ret = PTR_ERR(priv->clk); + dev_err(&pdev->dev, "cannot get clock: %d\n", ret); goto eclkget; } mmc_data->clk_enable = sh_mobile_sdhi_clk_enable; mmc_data->clk_disable = sh_mobile_sdhi_clk_disable; mmc_data->capabilities = MMC_CAP_MMC_HIGHSPEED; + mmc_data->write16_hook = sh_mobile_sdhi_write16_hook; if (p) { mmc_data->flags = p->tmio_flags; - if (mmc_data->flags & TMIO_MMC_HAS_IDLE_WAIT) - mmc_data->write16_hook = sh_mobile_sdhi_write16_hook; mmc_data->ocr_mask = p->tmio_ocr_mask; mmc_data->capabilities |= p->tmio_caps; mmc_data->capabilities2 |= p->tmio_caps2; @@ -189,6 +206,11 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev) */ mmc_data->flags |= TMIO_MMC_SDIO_IRQ; + if (of_id && of_id->data) { + const struct sh_mobile_sdhi_of_data *of_data = of_id->data; + mmc_data->flags |= of_data->tmio_flags; + } + ret = tmio_mmc_host_probe(&host, pdev, mmc_data); if (ret < 0) goto eprobe; @@ -201,33 +223,33 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev) irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_CARD_DETECT); if (irq >= 0) { multiplexed_isr = false; - ret = request_irq(irq, tmio_mmc_card_detect_irq, 0, + ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_card_detect_irq, 0, dev_name(&pdev->dev), host); if (ret) - goto eirq_card_detect; + goto eirq; } irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDIO); if (irq >= 0) { multiplexed_isr = false; - ret = request_irq(irq, tmio_mmc_sdio_irq, 0, + ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_sdio_irq, 0, dev_name(&pdev->dev), host); if (ret) - goto eirq_sdio; + goto eirq; } irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDCARD); if (irq >= 0) { multiplexed_isr = false; - ret = request_irq(irq, tmio_mmc_sdcard_irq, 0, + ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_sdcard_irq, 0, dev_name(&pdev->dev), host); if (ret) - goto eirq_sdcard; + goto eirq; } else if (!multiplexed_isr) { dev_err(&pdev->dev, "Principal SD-card IRQ is missing among named interrupts\n"); ret = irq; - goto eirq_sdcard; + goto eirq; } if (multiplexed_isr) { @@ -236,46 +258,30 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev) if (irq < 0) break; i++; - ret = request_irq(irq, tmio_mmc_irq, 0, + ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_irq, 0, dev_name(&pdev->dev), host); if (ret) - goto eirq_multiplexed; + goto eirq; } /* There must be at least one IRQ source */ if (!i) - goto eirq_multiplexed; + goto eirq; } dev_info(&pdev->dev, "%s base at 0x%08lx clock rate %u MHz\n", mmc_hostname(host->mmc), (unsigned long) (platform_get_resource(pdev, IORESOURCE_MEM, 0)->start), - mmc_data->hclk / 1000000); + host->mmc->f_max / 1000000); return ret; -eirq_multiplexed: - while (i--) { - irq = platform_get_irq(pdev, i); - free_irq(irq, host); - } -eirq_sdcard: - irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDIO); - if (irq >= 0) - free_irq(irq, host); -eirq_sdio: - irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_CARD_DETECT); - if (irq >= 0) - free_irq(irq, host); -eirq_card_detect: +eirq: tmio_mmc_host_remove(host); eprobe: - clk_put(priv->clk); eclkget: if (p && p->cleanup) p->cleanup(pdev); -einit: - kfree(priv); return ret; } @@ -283,29 +289,13 @@ static int sh_mobile_sdhi_remove(struct platform_device *pdev) { struct mmc_host *mmc = platform_get_drvdata(pdev); struct tmio_mmc_host *host = mmc_priv(mmc); - struct sh_mobile_sdhi *priv = container_of(host->pdata, struct sh_mobile_sdhi, mmc_data); struct sh_mobile_sdhi_info *p = pdev->dev.platform_data; - int i = 0, irq; - - if (p) - p->pdata = NULL; tmio_mmc_host_remove(host); - while (1) { - irq = platform_get_irq(pdev, i++); - if (irq < 0) - break; - free_irq(irq, host); - } - - clk_put(priv->clk); - if (p && p->cleanup) p->cleanup(pdev); - kfree(priv); - return 0; } @@ -316,12 +306,6 @@ static const struct dev_pm_ops tmio_mmc_dev_pm_ops = { .runtime_resume = tmio_mmc_host_runtime_resume, }; -static const struct of_device_id sh_mobile_sdhi_of_match[] = { - { .compatible = "renesas,shmobile-sdhi" }, - { } -}; -MODULE_DEVICE_TABLE(of, sh_mobile_sdhi_of_match); - static struct platform_driver sh_mobile_sdhi_driver = { .driver = { .name = "sh_mobile_sdhi", @@ -330,7 +314,7 @@ static struct platform_driver sh_mobile_sdhi_driver = { .of_match_table = sh_mobile_sdhi_of_match, }, .probe = sh_mobile_sdhi_probe, - .remove = __devexit_p(sh_mobile_sdhi_remove), + .remove = sh_mobile_sdhi_remove, }; module_platform_driver(sh_mobile_sdhi_driver); diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c index 113ce6c9cf32..139212e79cde 100644 --- a/drivers/mmc/host/tmio_mmc.c +++ b/drivers/mmc/host/tmio_mmc.c @@ -57,7 +57,7 @@ static int tmio_mmc_resume(struct platform_device *dev) #define tmio_mmc_resume NULL #endif -static int __devinit tmio_mmc_probe(struct platform_device *pdev) +static int tmio_mmc_probe(struct platform_device *pdev) { const struct mfd_cell *cell = mfd_get_cell(pdev); struct tmio_mmc_data *pdata; @@ -107,7 +107,7 @@ out: return ret; } -static int __devexit tmio_mmc_remove(struct platform_device *pdev) +static int tmio_mmc_remove(struct platform_device *pdev) { const struct mfd_cell *cell = mfd_get_cell(pdev); struct mmc_host *mmc = platform_get_drvdata(pdev); @@ -133,7 +133,7 @@ static struct platform_driver tmio_mmc_driver = { .owner = THIS_MODULE, }, .probe = tmio_mmc_probe, - .remove = __devexit_p(tmio_mmc_remove), + .remove = tmio_mmc_remove, .suspend = tmio_mmc_suspend, .resume = tmio_mmc_resume, }; diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c index 0d8a9bbe30be..f508ecb5b8a7 100644 --- a/drivers/mmc/host/tmio_mmc_pio.c +++ b/drivers/mmc/host/tmio_mmc_pio.c @@ -43,6 +43,7 @@ #include <linux/platform_device.h> #include <linux/pm_qos.h> #include <linux/pm_runtime.h> +#include <linux/regulator/consumer.h> #include <linux/scatterlist.h> #include <linux/spinlock.h> #include <linux/workqueue.h> @@ -155,6 +156,7 @@ static void tmio_mmc_set_clock(struct tmio_mmc_host *host, int new_clock) host->set_clk_div(host->pdev, (clk>>22) & 1); sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, clk & 0x1ff); + msleep(10); } static void tmio_mmc_clk_stop(struct tmio_mmc_host *host) @@ -768,16 +770,48 @@ static int tmio_mmc_clk_update(struct mmc_host *mmc) return ret; } -static void tmio_mmc_set_power(struct tmio_mmc_host *host, struct mmc_ios *ios) +static void tmio_mmc_power_on(struct tmio_mmc_host *host, unsigned short vdd) { struct mmc_host *mmc = host->mmc; + int ret = 0; + + /* .set_ios() is returning void, so, no chance to report an error */ if (host->set_pwr) - host->set_pwr(host->pdev, ios->power_mode != MMC_POWER_OFF); + host->set_pwr(host->pdev, 1); + + if (!IS_ERR(mmc->supply.vmmc)) { + ret = mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd); + /* + * Attention: empiric value. With a b43 WiFi SDIO card this + * delay proved necessary for reliable card-insertion probing. + * 100us were not enough. Is this the same 140us delay, as in + * tmio_mmc_set_ios()? + */ + udelay(200); + } + /* + * It seems, VccQ should be switched on after Vcc, this is also what the + * omap_hsmmc.c driver does. + */ + if (!IS_ERR(mmc->supply.vqmmc) && !ret) { + regulator_enable(mmc->supply.vqmmc); + udelay(200); + } +} + +static void tmio_mmc_power_off(struct tmio_mmc_host *host) +{ + struct mmc_host *mmc = host->mmc; + + if (!IS_ERR(mmc->supply.vqmmc)) + regulator_disable(mmc->supply.vqmmc); + if (!IS_ERR(mmc->supply.vmmc)) - /* Errors ignored... */ - mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, - ios->power_mode ? ios->vdd : 0); + mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0); + + if (host->set_pwr) + host->set_pwr(host->pdev, 0); } /* Set MMC clock / power. @@ -828,18 +862,20 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) if (!host->power) { tmio_mmc_clk_update(mmc); pm_runtime_get_sync(dev); - host->power = true; } tmio_mmc_set_clock(host, ios->clock); - /* power up SD bus */ - tmio_mmc_set_power(host, ios); + if (!host->power) { + /* power up SD card and the bus */ + tmio_mmc_power_on(host, ios->vdd); + host->power = true; + } /* start bus clock */ tmio_mmc_clk_start(host); } else if (ios->power_mode != MMC_POWER_UP) { - if (ios->power_mode == MMC_POWER_OFF) - tmio_mmc_set_power(host, ios); if (host->power) { struct tmio_mmc_data *pdata = host->pdata; + if (ios->power_mode == MMC_POWER_OFF) + tmio_mmc_power_off(host); tmio_mmc_clk_stop(host); host->power = false; pm_runtime_put(dev); @@ -918,7 +954,18 @@ static void tmio_mmc_init_ocr(struct tmio_mmc_host *host) dev_warn(mmc_dev(mmc), "Platform OCR mask is ignored\n"); } -int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host, +static void tmio_mmc_of_parse(struct platform_device *pdev, + struct tmio_mmc_data *pdata) +{ + const struct device_node *np = pdev->dev.of_node; + if (!np) + return; + + if (of_get_property(np, "toshiba,mmc-wrprotect-disable", NULL)) + pdata->flags |= TMIO_MMC_WRPROTECT_DISABLE; +} + +int tmio_mmc_host_probe(struct tmio_mmc_host **host, struct platform_device *pdev, struct tmio_mmc_data *pdata) { @@ -928,6 +975,11 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host, int ret; u32 irq_mask = TMIO_MASK_CMD; + tmio_mmc_of_parse(pdev, pdata); + + if (!(pdata->flags & TMIO_MMC_HAS_IDLE_WAIT)) + pdata->write16_hook = NULL; + res_ctl = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res_ctl) return -EINVAL; @@ -936,6 +988,8 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host, if (!mmc) return -ENOMEM; + mmc_of_parse(mmc); + pdata->dev = &pdev->dev; _host = mmc_priv(mmc); _host->pdata = pdata; @@ -956,7 +1010,7 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host, } mmc->ops = &tmio_mmc_ops; - mmc->caps = MMC_CAP_4_BIT_DATA | pdata->capabilities; + mmc->caps |= MMC_CAP_4_BIT_DATA | pdata->capabilities; mmc->caps2 = pdata->capabilities2; mmc->max_segs = 32; mmc->max_blk_size = 512; @@ -968,7 +1022,8 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host, _host->native_hotplug = !(pdata->flags & TMIO_MMC_USE_GPIO_CD || mmc->caps & MMC_CAP_NEEDS_POLL || - mmc->caps & MMC_CAP_NONREMOVABLE); + mmc->caps & MMC_CAP_NONREMOVABLE || + mmc->slot.cd_irq >= 0); _host->power = false; pm_runtime_enable(&pdev->dev); @@ -1060,16 +1115,8 @@ EXPORT_SYMBOL(tmio_mmc_host_probe); void tmio_mmc_host_remove(struct tmio_mmc_host *host) { struct platform_device *pdev = host->pdev; - struct tmio_mmc_data *pdata = host->pdata; struct mmc_host *mmc = host->mmc; - if (pdata->flags & TMIO_MMC_USE_GPIO_CD) - /* - * This means we can miss a card-eject, but this is anyway - * possible, because of delayed processing of hotplug events. - */ - mmc_gpio_free_cd(mmc); - if (!host->native_hotplug) pm_runtime_get_sync(&pdev->dev); diff --git a/drivers/mmc/host/via-sdmmc.c b/drivers/mmc/host/via-sdmmc.c index f18becef156d..4f84586c6e9e 100644 --- a/drivers/mmc/host/via-sdmmc.c +++ b/drivers/mmc/host/via-sdmmc.c @@ -1082,7 +1082,7 @@ static void via_init_mmc_host(struct via_crdr_mmc_host *host) msleep(1); } -static int __devinit via_sd_probe(struct pci_dev *pcidev, +static int via_sd_probe(struct pci_dev *pcidev, const struct pci_device_id *id) { struct mmc_host *mmc; @@ -1176,7 +1176,7 @@ disable: return ret; } -static void __devexit via_sd_remove(struct pci_dev *pcidev) +static void via_sd_remove(struct pci_dev *pcidev) { struct via_crdr_mmc_host *sdhost = pci_get_drvdata(pcidev); unsigned long flags; @@ -1332,7 +1332,7 @@ static struct pci_driver via_sd_driver = { .name = DRV_NAME, .id_table = via_ids, .probe = via_sd_probe, - .remove = __devexit_p(via_sd_remove), + .remove = via_sd_remove, .suspend = via_sd_suspend, .resume = via_sd_resume, }; diff --git a/drivers/mmc/host/vub300.c b/drivers/mmc/host/vub300.c index d5655a63eda4..cb9f361c03ab 100644 --- a/drivers/mmc/host/vub300.c +++ b/drivers/mmc/host/vub300.c @@ -2362,6 +2362,7 @@ error4: error1: usb_free_urb(command_out_urb); error0: + usb_put_dev(udev); return retval; } diff --git a/drivers/mmc/host/wbsd.c b/drivers/mmc/host/wbsd.c index 64acd9ce141c..e954b7758876 100644 --- a/drivers/mmc/host/wbsd.c +++ b/drivers/mmc/host/wbsd.c @@ -1196,7 +1196,7 @@ static irqreturn_t wbsd_irq(int irq, void *dev_id) * Allocate/free MMC structure. */ -static int __devinit wbsd_alloc_mmc(struct device *dev) +static int wbsd_alloc_mmc(struct device *dev) { struct mmc_host *mmc; struct wbsd_host *host; @@ -1288,7 +1288,7 @@ static void wbsd_free_mmc(struct device *dev) * Scan for known chip id:s */ -static int __devinit wbsd_scan(struct wbsd_host *host) +static int wbsd_scan(struct wbsd_host *host) { int i, j, k; int id; @@ -1344,7 +1344,7 @@ static int __devinit wbsd_scan(struct wbsd_host *host) * Allocate/free io port ranges */ -static int __devinit wbsd_request_region(struct wbsd_host *host, int base) +static int wbsd_request_region(struct wbsd_host *host, int base) { if (base & 0x7) return -EINVAL; @@ -1374,7 +1374,7 @@ static void wbsd_release_regions(struct wbsd_host *host) * Allocate/free DMA port and buffer */ -static void __devinit wbsd_request_dma(struct wbsd_host *host, int dma) +static void wbsd_request_dma(struct wbsd_host *host, int dma) { if (dma < 0) return; @@ -1452,7 +1452,7 @@ static void wbsd_release_dma(struct wbsd_host *host) * Allocate/free IRQ. */ -static int __devinit wbsd_request_irq(struct wbsd_host *host, int irq) +static int wbsd_request_irq(struct wbsd_host *host, int irq) { int ret; @@ -1502,7 +1502,7 @@ static void wbsd_release_irq(struct wbsd_host *host) * Allocate all resources for the host. */ -static int __devinit wbsd_request_resources(struct wbsd_host *host, +static int wbsd_request_resources(struct wbsd_host *host, int base, int irq, int dma) { int ret; @@ -1644,7 +1644,7 @@ static void wbsd_chip_poweroff(struct wbsd_host *host) * * \*****************************************************************************/ -static int __devinit wbsd_init(struct device *dev, int base, int irq, int dma, +static int wbsd_init(struct device *dev, int base, int irq, int dma, int pnp) { struct wbsd_host *host = NULL; @@ -1735,7 +1735,7 @@ static int __devinit wbsd_init(struct device *dev, int base, int irq, int dma, return 0; } -static void __devexit wbsd_shutdown(struct device *dev, int pnp) +static void wbsd_shutdown(struct device *dev, int pnp) { struct mmc_host *mmc = dev_get_drvdata(dev); struct wbsd_host *host; @@ -1762,13 +1762,13 @@ static void __devexit wbsd_shutdown(struct device *dev, int pnp) * Non-PnP */ -static int __devinit wbsd_probe(struct platform_device *dev) +static int wbsd_probe(struct platform_device *dev) { /* Use the module parameters for resources */ return wbsd_init(&dev->dev, param_io, param_irq, param_dma, 0); } -static int __devexit wbsd_remove(struct platform_device *dev) +static int wbsd_remove(struct platform_device *dev) { wbsd_shutdown(&dev->dev, 0); @@ -1781,7 +1781,7 @@ static int __devexit wbsd_remove(struct platform_device *dev) #ifdef CONFIG_PNP -static int __devinit +static int wbsd_pnp_probe(struct pnp_dev *pnpdev, const struct pnp_device_id *dev_id) { int io, irq, dma; @@ -1801,7 +1801,7 @@ wbsd_pnp_probe(struct pnp_dev *pnpdev, const struct pnp_device_id *dev_id) return wbsd_init(&pnpdev->dev, io, irq, dma, 1); } -static void __devexit wbsd_pnp_remove(struct pnp_dev *dev) +static void wbsd_pnp_remove(struct pnp_dev *dev) { wbsd_shutdown(&dev->dev, 1); } @@ -1941,7 +1941,7 @@ static struct platform_device *wbsd_device; static struct platform_driver wbsd_driver = { .probe = wbsd_probe, - .remove = __devexit_p(wbsd_remove), + .remove = wbsd_remove, .suspend = wbsd_platform_suspend, .resume = wbsd_platform_resume, @@ -1957,7 +1957,7 @@ static struct pnp_driver wbsd_pnp_driver = { .name = DRIVER_NAME, .id_table = pnp_dev_table, .probe = wbsd_pnp_probe, - .remove = __devexit_p(wbsd_pnp_remove), + .remove = wbsd_pnp_remove, .suspend = wbsd_pnp_suspend, .resume = wbsd_pnp_resume, diff --git a/drivers/mmc/host/wmt-sdmmc.c b/drivers/mmc/host/wmt-sdmmc.c new file mode 100644 index 000000000000..c6d001509e5a --- /dev/null +++ b/drivers/mmc/host/wmt-sdmmc.c @@ -0,0 +1,1029 @@ +/* + * WM8505/WM8650 SD/MMC Host Controller + * + * Copyright (C) 2010 Tony Prisk + * Copyright (C) 2008 WonderMedia Technologies, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/ioport.h> +#include <linux/errno.h> +#include <linux/dma-mapping.h> +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/clk.h> +#include <linux/gpio.h> + +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/of_irq.h> +#include <linux/of_device.h> + +#include <linux/mmc/host.h> +#include <linux/mmc/mmc.h> +#include <linux/mmc/sd.h> + +#include <asm/byteorder.h> + + +#define DRIVER_NAME "wmt-sdhc" + + +/* MMC/SD controller registers */ +#define SDMMC_CTLR 0x00 +#define SDMMC_CMD 0x01 +#define SDMMC_RSPTYPE 0x02 +#define SDMMC_ARG 0x04 +#define SDMMC_BUSMODE 0x08 +#define SDMMC_BLKLEN 0x0C +#define SDMMC_BLKCNT 0x0E +#define SDMMC_RSP 0x10 +#define SDMMC_CBCR 0x20 +#define SDMMC_INTMASK0 0x24 +#define SDMMC_INTMASK1 0x25 +#define SDMMC_STS0 0x28 +#define SDMMC_STS1 0x29 +#define SDMMC_STS2 0x2A +#define SDMMC_STS3 0x2B +#define SDMMC_RSPTIMEOUT 0x2C +#define SDMMC_CLK 0x30 /* VT8500 only */ +#define SDMMC_EXTCTRL 0x34 +#define SDMMC_SBLKLEN 0x38 +#define SDMMC_DMATIMEOUT 0x3C + + +/* SDMMC_CTLR bit fields */ +#define CTLR_CMD_START 0x01 +#define CTLR_CMD_WRITE 0x04 +#define CTLR_FIFO_RESET 0x08 + +/* SDMMC_BUSMODE bit fields */ +#define BM_SPI_MODE 0x01 +#define BM_FOURBIT_MODE 0x02 +#define BM_EIGHTBIT_MODE 0x04 +#define BM_SD_OFF 0x10 +#define BM_SPI_CS 0x20 +#define BM_SD_POWER 0x40 +#define BM_SOFT_RESET 0x80 +#define BM_ONEBIT_MASK 0xFD + +/* SDMMC_BLKLEN bit fields */ +#define BLKL_CRCERR_ABORT 0x0800 +#define BLKL_CD_POL_HIGH 0x1000 +#define BLKL_GPI_CD 0x2000 +#define BLKL_DATA3_CD 0x4000 +#define BLKL_INT_ENABLE 0x8000 + +/* SDMMC_INTMASK0 bit fields */ +#define INT0_MBLK_TRAN_DONE_INT_EN 0x10 +#define INT0_BLK_TRAN_DONE_INT_EN 0x20 +#define INT0_CD_INT_EN 0x40 +#define INT0_DI_INT_EN 0x80 + +/* SDMMC_INTMASK1 bit fields */ +#define INT1_CMD_RES_TRAN_DONE_INT_EN 0x02 +#define INT1_CMD_RES_TOUT_INT_EN 0x04 +#define INT1_MBLK_AUTO_STOP_INT_EN 0x08 +#define INT1_DATA_TOUT_INT_EN 0x10 +#define INT1_RESCRC_ERR_INT_EN 0x20 +#define INT1_RCRC_ERR_INT_EN 0x40 +#define INT1_WCRC_ERR_INT_EN 0x80 + +/* SDMMC_STS0 bit fields */ +#define STS0_WRITE_PROTECT 0x02 +#define STS0_CD_DATA3 0x04 +#define STS0_CD_GPI 0x08 +#define STS0_MBLK_DONE 0x10 +#define STS0_BLK_DONE 0x20 +#define STS0_CARD_DETECT 0x40 +#define STS0_DEVICE_INS 0x80 + +/* SDMMC_STS1 bit fields */ +#define STS1_SDIO_INT 0x01 +#define STS1_CMDRSP_DONE 0x02 +#define STS1_RSP_TIMEOUT 0x04 +#define STS1_AUTOSTOP_DONE 0x08 +#define STS1_DATA_TIMEOUT 0x10 +#define STS1_RSP_CRC_ERR 0x20 +#define STS1_RCRC_ERR 0x40 +#define STS1_WCRC_ERR 0x80 + +/* SDMMC_STS2 bit fields */ +#define STS2_CMD_RES_BUSY 0x10 +#define STS2_DATARSP_BUSY 0x20 +#define STS2_DIS_FORCECLK 0x80 + + +/* MMC/SD DMA Controller Registers */ +#define SDDMA_GCR 0x100 +#define SDDMA_IER 0x104 +#define SDDMA_ISR 0x108 +#define SDDMA_DESPR 0x10C +#define SDDMA_RBR 0x110 +#define SDDMA_DAR 0x114 +#define SDDMA_BAR 0x118 +#define SDDMA_CPR 0x11C +#define SDDMA_CCR 0x120 + + +/* SDDMA_GCR bit fields */ +#define DMA_GCR_DMA_EN 0x00000001 +#define DMA_GCR_SOFT_RESET 0x00000100 + +/* SDDMA_IER bit fields */ +#define DMA_IER_INT_EN 0x00000001 + +/* SDDMA_ISR bit fields */ +#define DMA_ISR_INT_STS 0x00000001 + +/* SDDMA_RBR bit fields */ +#define DMA_RBR_FORMAT 0x40000000 +#define DMA_RBR_END 0x80000000 + +/* SDDMA_CCR bit fields */ +#define DMA_CCR_RUN 0x00000080 +#define DMA_CCR_IF_TO_PERIPHERAL 0x00000000 +#define DMA_CCR_PERIPHERAL_TO_IF 0x00400000 + +/* SDDMA_CCR event status */ +#define DMA_CCR_EVT_NO_STATUS 0x00000000 +#define DMA_CCR_EVT_UNDERRUN 0x00000001 +#define DMA_CCR_EVT_OVERRUN 0x00000002 +#define DMA_CCR_EVT_DESP_READ 0x00000003 +#define DMA_CCR_EVT_DATA_RW 0x00000004 +#define DMA_CCR_EVT_EARLY_END 0x00000005 +#define DMA_CCR_EVT_SUCCESS 0x0000000F + +#define PDMA_READ 0x00 +#define PDMA_WRITE 0x01 + +#define WMT_SD_POWER_OFF 0 +#define WMT_SD_POWER_ON 1 + +struct wmt_dma_descriptor { + u32 flags; + u32 data_buffer_addr; + u32 branch_addr; + u32 reserved1; +}; + +struct wmt_mci_caps { + unsigned int f_min; + unsigned int f_max; + u32 ocr_avail; + u32 caps; + u32 max_seg_size; + u32 max_segs; + u32 max_blk_size; +}; + +struct wmt_mci_priv { + struct mmc_host *mmc; + void __iomem *sdmmc_base; + + int irq_regular; + int irq_dma; + + void *dma_desc_buffer; + dma_addr_t dma_desc_device_addr; + + struct completion cmdcomp; + struct completion datacomp; + + struct completion *comp_cmd; + struct completion *comp_dma; + + struct mmc_request *req; + struct mmc_command *cmd; + + struct clk *clk_sdmmc; + struct device *dev; + + u8 power_inverted; + u8 cd_inverted; +}; + +static void wmt_set_sd_power(struct wmt_mci_priv *priv, int enable) +{ + u32 reg_tmp; + if (enable) { + if (priv->power_inverted) { + reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE); + writeb(reg_tmp | BM_SD_OFF, + priv->sdmmc_base + SDMMC_BUSMODE); + } else { + reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE); + writeb(reg_tmp & (~BM_SD_OFF), + priv->sdmmc_base + SDMMC_BUSMODE); + } + } else { + if (priv->power_inverted) { + reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE); + writeb(reg_tmp & (~BM_SD_OFF), + priv->sdmmc_base + SDMMC_BUSMODE); + } else { + reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE); + writeb(reg_tmp | BM_SD_OFF, + priv->sdmmc_base + SDMMC_BUSMODE); + } + } +} + +static void wmt_mci_read_response(struct mmc_host *mmc) +{ + struct wmt_mci_priv *priv; + int idx1, idx2; + u8 tmp_resp; + u32 response; + + priv = mmc_priv(mmc); + + for (idx1 = 0; idx1 < 4; idx1++) { + response = 0; + for (idx2 = 0; idx2 < 4; idx2++) { + if ((idx1 == 3) && (idx2 == 3)) + tmp_resp = readb(priv->sdmmc_base + SDMMC_RSP); + else + tmp_resp = readb(priv->sdmmc_base + SDMMC_RSP + + (idx1*4) + idx2 + 1); + response |= (tmp_resp << (idx2 * 8)); + } + priv->cmd->resp[idx1] = cpu_to_be32(response); + } +} + +static void wmt_mci_start_command(struct wmt_mci_priv *priv) +{ + u32 reg_tmp; + + reg_tmp = readb(priv->sdmmc_base + SDMMC_CTLR); + writeb(reg_tmp | CTLR_CMD_START, priv->sdmmc_base + SDMMC_CTLR); +} + +static int wmt_mci_send_command(struct mmc_host *mmc, u8 command, u8 cmdtype, + u32 arg, u8 rsptype) +{ + struct wmt_mci_priv *priv; + u32 reg_tmp; + + priv = mmc_priv(mmc); + + /* write command, arg, resptype registers */ + writeb(command, priv->sdmmc_base + SDMMC_CMD); + writel(arg, priv->sdmmc_base + SDMMC_ARG); + writeb(rsptype, priv->sdmmc_base + SDMMC_RSPTYPE); + + /* reset response FIFO */ + reg_tmp = readb(priv->sdmmc_base + SDMMC_CTLR); + writeb(reg_tmp | CTLR_FIFO_RESET, priv->sdmmc_base + SDMMC_CTLR); + + /* ensure clock enabled - VT3465 */ + wmt_set_sd_power(priv, WMT_SD_POWER_ON); + + /* clear status bits */ + writeb(0xFF, priv->sdmmc_base + SDMMC_STS0); + writeb(0xFF, priv->sdmmc_base + SDMMC_STS1); + writeb(0xFF, priv->sdmmc_base + SDMMC_STS2); + writeb(0xFF, priv->sdmmc_base + SDMMC_STS3); + + /* set command type */ + reg_tmp = readb(priv->sdmmc_base + SDMMC_CTLR); + writeb((reg_tmp & 0x0F) | (cmdtype << 4), + priv->sdmmc_base + SDMMC_CTLR); + + return 0; +} + +static void wmt_mci_disable_dma(struct wmt_mci_priv *priv) +{ + writel(DMA_ISR_INT_STS, priv->sdmmc_base + SDDMA_ISR); + writel(0, priv->sdmmc_base + SDDMA_IER); +} + +static void wmt_complete_data_request(struct wmt_mci_priv *priv) +{ + struct mmc_request *req; + req = priv->req; + + req->data->bytes_xfered = req->data->blksz * req->data->blocks; + + /* unmap the DMA pages used for write data */ + if (req->data->flags & MMC_DATA_WRITE) + dma_unmap_sg(mmc_dev(priv->mmc), req->data->sg, + req->data->sg_len, DMA_TO_DEVICE); + else + dma_unmap_sg(mmc_dev(priv->mmc), req->data->sg, + req->data->sg_len, DMA_FROM_DEVICE); + + /* Check if the DMA ISR returned a data error */ + if ((req->cmd->error) || (req->data->error)) + mmc_request_done(priv->mmc, req); + else { + wmt_mci_read_response(priv->mmc); + if (!req->data->stop) { + /* single-block read/write requests end here */ + mmc_request_done(priv->mmc, req); + } else { + /* + * we change the priv->cmd variable so the response is + * stored in the stop struct rather than the original + * calling command struct + */ + priv->comp_cmd = &priv->cmdcomp; + init_completion(priv->comp_cmd); + priv->cmd = req->data->stop; + wmt_mci_send_command(priv->mmc, req->data->stop->opcode, + 7, req->data->stop->arg, 9); + wmt_mci_start_command(priv); + } + } +} + +static irqreturn_t wmt_mci_dma_isr(int irq_num, void *data) +{ + struct mmc_host *mmc; + struct wmt_mci_priv *priv; + + int status; + + priv = (struct wmt_mci_priv *)data; + mmc = priv->mmc; + + status = readl(priv->sdmmc_base + SDDMA_CCR) & 0x0F; + + if (status != DMA_CCR_EVT_SUCCESS) { + dev_err(priv->dev, "DMA Error: Status = %d\n", status); + priv->req->data->error = -ETIMEDOUT; + complete(priv->comp_dma); + return IRQ_HANDLED; + } + + priv->req->data->error = 0; + + wmt_mci_disable_dma(priv); + + complete(priv->comp_dma); + + if (priv->comp_cmd) { + if (completion_done(priv->comp_cmd)) { + /* + * if the command (regular) interrupt has already + * completed, finish off the request otherwise we wait + * for the command interrupt and finish from there. + */ + wmt_complete_data_request(priv); + } + } + + return IRQ_HANDLED; +} + +static irqreturn_t wmt_mci_regular_isr(int irq_num, void *data) +{ + struct wmt_mci_priv *priv; + u32 status0; + u32 status1; + u32 status2; + u32 reg_tmp; + int cmd_done; + + priv = (struct wmt_mci_priv *)data; + cmd_done = 0; + status0 = readb(priv->sdmmc_base + SDMMC_STS0); + status1 = readb(priv->sdmmc_base + SDMMC_STS1); + status2 = readb(priv->sdmmc_base + SDMMC_STS2); + + /* Check for card insertion */ + reg_tmp = readb(priv->sdmmc_base + SDMMC_INTMASK0); + if ((reg_tmp & INT0_DI_INT_EN) && (status0 & STS0_DEVICE_INS)) { + mmc_detect_change(priv->mmc, 0); + if (priv->cmd) + priv->cmd->error = -ETIMEDOUT; + if (priv->comp_cmd) + complete(priv->comp_cmd); + if (priv->comp_dma) { + wmt_mci_disable_dma(priv); + complete(priv->comp_dma); + } + writeb(STS0_DEVICE_INS, priv->sdmmc_base + SDMMC_STS0); + return IRQ_HANDLED; + } + + if ((!priv->req->data) || + ((priv->req->data->stop) && (priv->cmd == priv->req->data->stop))) { + /* handle non-data & stop_transmission requests */ + if (status1 & STS1_CMDRSP_DONE) { + priv->cmd->error = 0; + cmd_done = 1; + } else if ((status1 & STS1_RSP_TIMEOUT) || + (status1 & STS1_DATA_TIMEOUT)) { + priv->cmd->error = -ETIMEDOUT; + cmd_done = 1; + } + + if (cmd_done) { + priv->comp_cmd = NULL; + + if (!priv->cmd->error) + wmt_mci_read_response(priv->mmc); + + priv->cmd = NULL; + + mmc_request_done(priv->mmc, priv->req); + } + } else { + /* handle data requests */ + if (status1 & STS1_CMDRSP_DONE) { + if (priv->cmd) + priv->cmd->error = 0; + if (priv->comp_cmd) + complete(priv->comp_cmd); + } + + if ((status1 & STS1_RSP_TIMEOUT) || + (status1 & STS1_DATA_TIMEOUT)) { + if (priv->cmd) + priv->cmd->error = -ETIMEDOUT; + if (priv->comp_cmd) + complete(priv->comp_cmd); + if (priv->comp_dma) { + wmt_mci_disable_dma(priv); + complete(priv->comp_dma); + } + } + + if (priv->comp_dma) { + /* + * If the dma interrupt has already completed, finish + * off the request; otherwise we wait for the DMA + * interrupt and finish from there. + */ + if (completion_done(priv->comp_dma)) + wmt_complete_data_request(priv); + } + } + + writeb(status0, priv->sdmmc_base + SDMMC_STS0); + writeb(status1, priv->sdmmc_base + SDMMC_STS1); + writeb(status2, priv->sdmmc_base + SDMMC_STS2); + + return IRQ_HANDLED; +} + +static void wmt_reset_hardware(struct mmc_host *mmc) +{ + struct wmt_mci_priv *priv; + u32 reg_tmp; + + priv = mmc_priv(mmc); + + /* reset controller */ + reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE); + writeb(reg_tmp | BM_SOFT_RESET, priv->sdmmc_base + SDMMC_BUSMODE); + + /* reset response FIFO */ + reg_tmp = readb(priv->sdmmc_base + SDMMC_CTLR); + writeb(reg_tmp | CTLR_FIFO_RESET, priv->sdmmc_base + SDMMC_CTLR); + + /* enable GPI pin to detect card */ + writew(BLKL_INT_ENABLE | BLKL_GPI_CD, priv->sdmmc_base + SDMMC_BLKLEN); + + /* clear interrupt status */ + writeb(0xFF, priv->sdmmc_base + SDMMC_STS0); + writeb(0xFF, priv->sdmmc_base + SDMMC_STS1); + + /* setup interrupts */ + writeb(INT0_CD_INT_EN | INT0_DI_INT_EN, priv->sdmmc_base + + SDMMC_INTMASK0); + writeb(INT1_DATA_TOUT_INT_EN | INT1_CMD_RES_TRAN_DONE_INT_EN | + INT1_CMD_RES_TOUT_INT_EN, priv->sdmmc_base + SDMMC_INTMASK1); + + /* set the DMA timeout */ + writew(8191, priv->sdmmc_base + SDMMC_DMATIMEOUT); + + /* auto clock freezing enable */ + reg_tmp = readb(priv->sdmmc_base + SDMMC_STS2); + writeb(reg_tmp | STS2_DIS_FORCECLK, priv->sdmmc_base + SDMMC_STS2); + + /* set a default clock speed of 400Khz */ + clk_set_rate(priv->clk_sdmmc, 400000); +} + +static int wmt_dma_init(struct mmc_host *mmc) +{ + struct wmt_mci_priv *priv; + + priv = mmc_priv(mmc); + + writel(DMA_GCR_SOFT_RESET, priv->sdmmc_base + SDDMA_GCR); + writel(DMA_GCR_DMA_EN, priv->sdmmc_base + SDDMA_GCR); + if ((readl(priv->sdmmc_base + SDDMA_GCR) & DMA_GCR_DMA_EN) != 0) + return 0; + else + return 1; +} + +static void wmt_dma_init_descriptor(struct wmt_dma_descriptor *desc, + u16 req_count, u32 buffer_addr, u32 branch_addr, int end) +{ + desc->flags = 0x40000000 | req_count; + if (end) + desc->flags |= 0x80000000; + desc->data_buffer_addr = buffer_addr; + desc->branch_addr = branch_addr; +} + +static void wmt_dma_config(struct mmc_host *mmc, u32 descaddr, u8 dir) +{ + struct wmt_mci_priv *priv; + u32 reg_tmp; + + priv = mmc_priv(mmc); + + /* Enable DMA Interrupts */ + writel(DMA_IER_INT_EN, priv->sdmmc_base + SDDMA_IER); + + /* Write DMA Descriptor Pointer Register */ + writel(descaddr, priv->sdmmc_base + SDDMA_DESPR); + + writel(0x00, priv->sdmmc_base + SDDMA_CCR); + + if (dir == PDMA_WRITE) { + reg_tmp = readl(priv->sdmmc_base + SDDMA_CCR); + writel(reg_tmp & DMA_CCR_IF_TO_PERIPHERAL, priv->sdmmc_base + + SDDMA_CCR); + } else { + reg_tmp = readl(priv->sdmmc_base + SDDMA_CCR); + writel(reg_tmp | DMA_CCR_PERIPHERAL_TO_IF, priv->sdmmc_base + + SDDMA_CCR); + } +} + +static void wmt_dma_start(struct wmt_mci_priv *priv) +{ + u32 reg_tmp; + + reg_tmp = readl(priv->sdmmc_base + SDDMA_CCR); + writel(reg_tmp | DMA_CCR_RUN, priv->sdmmc_base + SDDMA_CCR); +} + +static void wmt_mci_request(struct mmc_host *mmc, struct mmc_request *req) +{ + struct wmt_mci_priv *priv; + struct wmt_dma_descriptor *desc; + u8 command; + u8 cmdtype; + u32 arg; + u8 rsptype; + u32 reg_tmp; + + struct scatterlist *sg; + int i; + int sg_cnt; + int offset; + u32 dma_address; + int desc_cnt; + + priv = mmc_priv(mmc); + priv->req = req; + + /* + * Use the cmd variable to pass a pointer to the resp[] structure + * This is required on multi-block requests to pass the pointer to the + * stop command + */ + priv->cmd = req->cmd; + + command = req->cmd->opcode; + arg = req->cmd->arg; + rsptype = mmc_resp_type(req->cmd); + cmdtype = 0; + + /* rsptype=7 only valid for SPI commands - should be =2 for SD */ + if (rsptype == 7) + rsptype = 2; + /* rsptype=21 is R1B, convert for controller */ + if (rsptype == 21) + rsptype = 9; + + if (!req->data) { + wmt_mci_send_command(mmc, command, cmdtype, arg, rsptype); + wmt_mci_start_command(priv); + /* completion is now handled in the regular_isr() */ + } + if (req->data) { + priv->comp_cmd = &priv->cmdcomp; + init_completion(priv->comp_cmd); + + wmt_dma_init(mmc); + + /* set controller data length */ + reg_tmp = readw(priv->sdmmc_base + SDMMC_BLKLEN); + writew((reg_tmp & 0xF800) | (req->data->blksz - 1), + priv->sdmmc_base + SDMMC_BLKLEN); + + /* set controller block count */ + writew(req->data->blocks, priv->sdmmc_base + SDMMC_BLKCNT); + + desc = (struct wmt_dma_descriptor *)priv->dma_desc_buffer; + + if (req->data->flags & MMC_DATA_WRITE) { + sg_cnt = dma_map_sg(mmc_dev(mmc), req->data->sg, + req->data->sg_len, DMA_TO_DEVICE); + cmdtype = 1; + if (req->data->blocks > 1) + cmdtype = 3; + } else { + sg_cnt = dma_map_sg(mmc_dev(mmc), req->data->sg, + req->data->sg_len, DMA_FROM_DEVICE); + cmdtype = 2; + if (req->data->blocks > 1) + cmdtype = 4; + } + + dma_address = priv->dma_desc_device_addr + 16; + desc_cnt = 0; + + for_each_sg(req->data->sg, sg, sg_cnt, i) { + offset = 0; + while (offset < sg_dma_len(sg)) { + wmt_dma_init_descriptor(desc, req->data->blksz, + sg_dma_address(sg)+offset, + dma_address, 0); + desc++; + desc_cnt++; + offset += req->data->blksz; + dma_address += 16; + if (desc_cnt == req->data->blocks) + break; + } + } + desc--; + desc->flags |= 0x80000000; + + if (req->data->flags & MMC_DATA_WRITE) + wmt_dma_config(mmc, priv->dma_desc_device_addr, + PDMA_WRITE); + else + wmt_dma_config(mmc, priv->dma_desc_device_addr, + PDMA_READ); + + wmt_mci_send_command(mmc, command, cmdtype, arg, rsptype); + + priv->comp_dma = &priv->datacomp; + init_completion(priv->comp_dma); + + wmt_dma_start(priv); + wmt_mci_start_command(priv); + } +} + +static void wmt_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) +{ + struct wmt_mci_priv *priv; + u32 reg_tmp; + + priv = mmc_priv(mmc); + + if (ios->power_mode == MMC_POWER_UP) { + wmt_reset_hardware(mmc); + + wmt_set_sd_power(priv, WMT_SD_POWER_ON); + } + if (ios->power_mode == MMC_POWER_OFF) + wmt_set_sd_power(priv, WMT_SD_POWER_OFF); + + if (ios->clock != 0) + clk_set_rate(priv->clk_sdmmc, ios->clock); + + switch (ios->bus_width) { + case MMC_BUS_WIDTH_8: + reg_tmp = readb(priv->sdmmc_base + SDMMC_EXTCTRL); + writeb(reg_tmp | 0x04, priv->sdmmc_base + SDMMC_EXTCTRL); + break; + case MMC_BUS_WIDTH_4: + reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE); + writeb(reg_tmp | BM_FOURBIT_MODE, priv->sdmmc_base + + SDMMC_BUSMODE); + + reg_tmp = readb(priv->sdmmc_base + SDMMC_EXTCTRL); + writeb(reg_tmp & 0xFB, priv->sdmmc_base + SDMMC_EXTCTRL); + break; + case MMC_BUS_WIDTH_1: + reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE); + writeb(reg_tmp & BM_ONEBIT_MASK, priv->sdmmc_base + + SDMMC_BUSMODE); + + reg_tmp = readb(priv->sdmmc_base + SDMMC_EXTCTRL); + writeb(reg_tmp & 0xFB, priv->sdmmc_base + SDMMC_EXTCTRL); + break; + } +} + +static int wmt_mci_get_ro(struct mmc_host *mmc) +{ + struct wmt_mci_priv *priv = mmc_priv(mmc); + + return !(readb(priv->sdmmc_base + SDMMC_STS0) & STS0_WRITE_PROTECT); +} + +static int wmt_mci_get_cd(struct mmc_host *mmc) +{ + struct wmt_mci_priv *priv = mmc_priv(mmc); + u32 cd = (readb(priv->sdmmc_base + SDMMC_STS0) & STS0_CD_GPI) >> 3; + + return !(cd ^ priv->cd_inverted); +} + +static struct mmc_host_ops wmt_mci_ops = { + .request = wmt_mci_request, + .set_ios = wmt_mci_set_ios, + .get_ro = wmt_mci_get_ro, + .get_cd = wmt_mci_get_cd, +}; + +/* Controller capabilities */ +static struct wmt_mci_caps wm8505_caps = { + .f_min = 390425, + .f_max = 50000000, + .ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34, + .caps = MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED | + MMC_CAP_SD_HIGHSPEED, + .max_seg_size = 65024, + .max_segs = 128, + .max_blk_size = 2048, +}; + +static struct of_device_id wmt_mci_dt_ids[] = { + { .compatible = "wm,wm8505-sdhc", .data = &wm8505_caps }, + { /* Sentinel */ }, +}; + +static int wmt_mci_probe(struct platform_device *pdev) +{ + struct mmc_host *mmc; + struct wmt_mci_priv *priv; + struct device_node *np = pdev->dev.of_node; + const struct of_device_id *of_id = + of_match_device(wmt_mci_dt_ids, &pdev->dev); + const struct wmt_mci_caps *wmt_caps = of_id->data; + int ret; + int regular_irq, dma_irq; + + if (!of_id || !of_id->data) { + dev_err(&pdev->dev, "Controller capabilities data missing\n"); + return -EFAULT; + } + + if (!np) { + dev_err(&pdev->dev, "Missing SDMMC description in devicetree\n"); + return -EFAULT; + } + + regular_irq = irq_of_parse_and_map(np, 0); + dma_irq = irq_of_parse_and_map(np, 1); + + if (!regular_irq || !dma_irq) { + dev_err(&pdev->dev, "Getting IRQs failed!\n"); + ret = -ENXIO; + goto fail1; + } + + mmc = mmc_alloc_host(sizeof(struct wmt_mci_priv), &pdev->dev); + if (!mmc) { + dev_err(&pdev->dev, "Failed to allocate mmc_host\n"); + ret = -ENOMEM; + goto fail1; + } + + mmc->ops = &wmt_mci_ops; + mmc->f_min = wmt_caps->f_min; + mmc->f_max = wmt_caps->f_max; + mmc->ocr_avail = wmt_caps->ocr_avail; + mmc->caps = wmt_caps->caps; + + mmc->max_seg_size = wmt_caps->max_seg_size; + mmc->max_segs = wmt_caps->max_segs; + mmc->max_blk_size = wmt_caps->max_blk_size; + + mmc->max_req_size = (16*512*mmc->max_segs); + mmc->max_blk_count = mmc->max_req_size / 512; + + priv = mmc_priv(mmc); + priv->mmc = mmc; + priv->dev = &pdev->dev; + + priv->power_inverted = 0; + priv->cd_inverted = 0; + + if (of_get_property(np, "sdon-inverted", NULL)) + priv->power_inverted = 1; + if (of_get_property(np, "cd-inverted", NULL)) + priv->cd_inverted = 1; + + priv->sdmmc_base = of_iomap(np, 0); + if (!priv->sdmmc_base) { + dev_err(&pdev->dev, "Failed to map IO space\n"); + ret = -ENOMEM; + goto fail2; + } + + priv->irq_regular = regular_irq; + priv->irq_dma = dma_irq; + + ret = request_irq(regular_irq, wmt_mci_regular_isr, 0, "sdmmc", priv); + if (ret) { + dev_err(&pdev->dev, "Register regular IRQ fail\n"); + goto fail3; + } + + ret = request_irq(dma_irq, wmt_mci_dma_isr, 32, "sdmmc", priv); + if (ret) { + dev_err(&pdev->dev, "Register DMA IRQ fail\n"); + goto fail4; + } + + /* alloc some DMA buffers for descriptors/transfers */ + priv->dma_desc_buffer = dma_alloc_coherent(&pdev->dev, + mmc->max_blk_count * 16, + &priv->dma_desc_device_addr, + 208); + if (!priv->dma_desc_buffer) { + dev_err(&pdev->dev, "DMA alloc fail\n"); + ret = -EPERM; + goto fail5; + } + + platform_set_drvdata(pdev, mmc); + + priv->clk_sdmmc = of_clk_get(np, 0); + if (IS_ERR(priv->clk_sdmmc)) { + dev_err(&pdev->dev, "Error getting clock\n"); + ret = PTR_ERR(priv->clk_sdmmc); + goto fail5; + } + + clk_prepare_enable(priv->clk_sdmmc); + + /* configure the controller to a known 'ready' state */ + wmt_reset_hardware(mmc); + + mmc_add_host(mmc); + + dev_info(&pdev->dev, "WMT SDHC Controller initialized\n"); + + return 0; +fail5: + free_irq(dma_irq, priv); +fail4: + free_irq(regular_irq, priv); +fail3: + iounmap(priv->sdmmc_base); +fail2: + mmc_free_host(mmc); +fail1: + return ret; +} + +static int wmt_mci_remove(struct platform_device *pdev) +{ + struct mmc_host *mmc; + struct wmt_mci_priv *priv; + struct resource *res; + u32 reg_tmp; + + mmc = platform_get_drvdata(pdev); + priv = mmc_priv(mmc); + + /* reset SD controller */ + reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE); + writel(reg_tmp | BM_SOFT_RESET, priv->sdmmc_base + SDMMC_BUSMODE); + reg_tmp = readw(priv->sdmmc_base + SDMMC_BLKLEN); + writew(reg_tmp & ~(0xA000), priv->sdmmc_base + SDMMC_BLKLEN); + writeb(0xFF, priv->sdmmc_base + SDMMC_STS0); + writeb(0xFF, priv->sdmmc_base + SDMMC_STS1); + + /* release the dma buffers */ + dma_free_coherent(&pdev->dev, priv->mmc->max_blk_count * 16, + priv->dma_desc_buffer, priv->dma_desc_device_addr); + + mmc_remove_host(mmc); + + free_irq(priv->irq_regular, priv); + free_irq(priv->irq_dma, priv); + + iounmap(priv->sdmmc_base); + + clk_disable_unprepare(priv->clk_sdmmc); + clk_put(priv->clk_sdmmc); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + release_mem_region(res->start, res->end - res->start + 1); + + mmc_free_host(mmc); + + platform_set_drvdata(pdev, NULL); + + dev_info(&pdev->dev, "WMT MCI device removed\n"); + + return 0; +} + +#ifdef CONFIG_PM +static int wmt_mci_suspend(struct device *dev) +{ + u32 reg_tmp; + struct platform_device *pdev = to_platform_device(dev); + struct mmc_host *mmc = platform_get_drvdata(pdev); + struct wmt_mci_priv *priv; + int ret; + + if (!mmc) + return 0; + + priv = mmc_priv(mmc); + ret = mmc_suspend_host(mmc); + + if (!ret) { + reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE); + writeb(reg_tmp | BM_SOFT_RESET, priv->sdmmc_base + + SDMMC_BUSMODE); + + reg_tmp = readw(priv->sdmmc_base + SDMMC_BLKLEN); + writew(reg_tmp & 0x5FFF, priv->sdmmc_base + SDMMC_BLKLEN); + + writeb(0xFF, priv->sdmmc_base + SDMMC_STS0); + writeb(0xFF, priv->sdmmc_base + SDMMC_STS1); + + clk_disable(priv->clk_sdmmc); + } + return ret; +} + +static int wmt_mci_resume(struct device *dev) +{ + u32 reg_tmp; + struct platform_device *pdev = to_platform_device(dev); + struct mmc_host *mmc = platform_get_drvdata(pdev); + struct wmt_mci_priv *priv; + int ret = 0; + + if (mmc) { + priv = mmc_priv(mmc); + clk_enable(priv->clk_sdmmc); + + reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE); + writeb(reg_tmp | BM_SOFT_RESET, priv->sdmmc_base + + SDMMC_BUSMODE); + + reg_tmp = readw(priv->sdmmc_base + SDMMC_BLKLEN); + writew(reg_tmp | (BLKL_GPI_CD | BLKL_INT_ENABLE), + priv->sdmmc_base + SDMMC_BLKLEN); + + reg_tmp = readb(priv->sdmmc_base + SDMMC_INTMASK0); + writeb(reg_tmp | INT0_DI_INT_EN, priv->sdmmc_base + + SDMMC_INTMASK0); + + ret = mmc_resume_host(mmc); + } + + return ret; +} + +static const struct dev_pm_ops wmt_mci_pm = { + .suspend = wmt_mci_suspend, + .resume = wmt_mci_resume, +}; + +#define wmt_mci_pm_ops (&wmt_mci_pm) + +#else /* !CONFIG_PM */ + +#define wmt_mci_pm_ops NULL + +#endif + +static struct platform_driver wmt_mci_driver = { + .probe = wmt_mci_probe, + .remove = wmt_mci_remove, + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + .pm = wmt_mci_pm_ops, + .of_match_table = wmt_mci_dt_ids, + }, +}; + +module_platform_driver(wmt_mci_driver); + +MODULE_DESCRIPTION("Wondermedia MMC/SD Driver"); +MODULE_AUTHOR("Tony Prisk"); +MODULE_LICENSE("GPL v2"); +MODULE_DEVICE_TABLE(of, wmt_mci_dt_ids); |