diff options
author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-11-01 22:23:55 -0200 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-11-03 07:59:03 -0200 |
commit | 4860c73804c6e7ef8e69f98958489bb2bea6f6d2 (patch) | |
tree | 6d8dc4ca7794478274e011e5fae4fd1005cf6877 /drivers/staging/go7007/go7007-driver.c | |
parent | d6ce55de3abcc4910fef1d79212a17480c154704 (diff) |
staging: Move media drivers to staging/media
In practice, it is being hard to distinguish when a patch
should go to staging tree or to the media tree. Better
to distinguish it, by putting the media drivers at a
separate staging directory. Newer staging drivers that include
anything with "dvb*.h", "v4l2*.h" or "videodev2.h" should
go to the drivers/staging/media tree.
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/staging/go7007/go7007-driver.c')
-rw-r--r-- | drivers/staging/go7007/go7007-driver.c | 659 |
1 files changed, 0 insertions, 659 deletions
diff --git a/drivers/staging/go7007/go7007-driver.c b/drivers/staging/go7007/go7007-driver.c deleted file mode 100644 index 6c9279a6d606..000000000000 --- a/drivers/staging/go7007/go7007-driver.c +++ /dev/null @@ -1,659 +0,0 @@ -/* - * Copyright (C) 2005-2006 Micronas USA 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. - * - * 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, write to the Free Software Foundation, - * Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - */ - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/sched.h> -#include <linux/spinlock.h> -#include <linux/unistd.h> -#include <linux/time.h> -#include <linux/mm.h> -#include <linux/vmalloc.h> -#include <linux/device.h> -#include <linux/i2c.h> -#include <linux/firmware.h> -#include <linux/mutex.h> -#include <linux/uaccess.h> -#include <linux/slab.h> -#include <asm/system.h> -#include <linux/videodev2.h> -#include <media/tuner.h> -#include <media/v4l2-common.h> - -#include "go7007-priv.h" -#include "wis-i2c.h" - -/* - * Wait for an interrupt to be delivered from the GO7007SB and return - * the associated value and data. - * - * Must be called with the hw_lock held. - */ -int go7007_read_interrupt(struct go7007 *go, u16 *value, u16 *data) -{ - go->interrupt_available = 0; - go->hpi_ops->read_interrupt(go); - if (wait_event_timeout(go->interrupt_waitq, - go->interrupt_available, 5*HZ) < 0) { - v4l2_err(&go->v4l2_dev, "timeout waiting for read interrupt\n"); - return -1; - } - if (!go->interrupt_available) - return -1; - go->interrupt_available = 0; - *value = go->interrupt_value & 0xfffe; - *data = go->interrupt_data; - return 0; -} -EXPORT_SYMBOL(go7007_read_interrupt); - -/* - * Read a register/address on the GO7007SB. - * - * Must be called with the hw_lock held. - */ -int go7007_read_addr(struct go7007 *go, u16 addr, u16 *data) -{ - int count = 100; - u16 value; - - if (go7007_write_interrupt(go, 0x0010, addr) < 0) - return -EIO; - while (count-- > 0) { - if (go7007_read_interrupt(go, &value, data) == 0 && - value == 0xa000) - return 0; - } - return -EIO; -} -EXPORT_SYMBOL(go7007_read_addr); - -/* - * Send the boot firmware to the encoder, which just wakes it up and lets - * us talk to the GPIO pins and on-board I2C adapter. - * - * Must be called with the hw_lock held. - */ -static int go7007_load_encoder(struct go7007 *go) -{ - const struct firmware *fw_entry; - char fw_name[] = "go7007fw.bin"; - void *bounce; - int fw_len, rv = 0; - u16 intr_val, intr_data; - - if (request_firmware(&fw_entry, fw_name, go->dev)) { - v4l2_err(go, "unable to load firmware from file " - "\"%s\"\n", fw_name); - return -1; - } - if (fw_entry->size < 16 || memcmp(fw_entry->data, "WISGO7007FW", 11)) { - v4l2_err(go, "file \"%s\" does not appear to be " - "go7007 firmware\n", fw_name); - release_firmware(fw_entry); - return -1; - } - fw_len = fw_entry->size - 16; - bounce = kmalloc(fw_len, GFP_KERNEL); - if (bounce == NULL) { - v4l2_err(go, "unable to allocate %d bytes for " - "firmware transfer\n", fw_len); - release_firmware(fw_entry); - return -1; - } - memcpy(bounce, fw_entry->data + 16, fw_len); - release_firmware(fw_entry); - if (go7007_interface_reset(go) < 0 || - go7007_send_firmware(go, bounce, fw_len) < 0 || - go7007_read_interrupt(go, &intr_val, &intr_data) < 0 || - (intr_val & ~0x1) != 0x5a5a) { - v4l2_err(go, "error transferring firmware\n"); - rv = -1; - } - kfree(bounce); - return rv; -} - -MODULE_FIRMWARE("go7007fw.bin"); - -/* - * Boot the encoder and register the I2C adapter if requested. Do the - * minimum initialization necessary, since the board-specific code may - * still need to probe the board ID. - * - * Must NOT be called with the hw_lock held. - */ -int go7007_boot_encoder(struct go7007 *go, int init_i2c) -{ - int ret; - - mutex_lock(&go->hw_lock); - ret = go7007_load_encoder(go); - mutex_unlock(&go->hw_lock); - if (ret < 0) - return -1; - if (!init_i2c) - return 0; - if (go7007_i2c_init(go) < 0) - return -1; - go->i2c_adapter_online = 1; - return 0; -} -EXPORT_SYMBOL(go7007_boot_encoder); - -/* - * Configure any hardware-related registers in the GO7007, such as GPIO - * pins and bus parameters, which are board-specific. This assumes - * the boot firmware has already been downloaded. - * - * Must be called with the hw_lock held. - */ -static int go7007_init_encoder(struct go7007 *go) -{ - if (go->board_info->audio_flags & GO7007_AUDIO_I2S_MASTER) { - go7007_write_addr(go, 0x1000, 0x0811); - go7007_write_addr(go, 0x1000, 0x0c11); - } - if (go->board_id == GO7007_BOARDID_MATRIX_REV) { - /* Set GPIO pin 0 to be an output (audio clock control) */ - go7007_write_addr(go, 0x3c82, 0x0001); - go7007_write_addr(go, 0x3c80, 0x00fe); - } - return 0; -} - -/* - * Send the boot firmware to the GO7007 and configure the registers. This - * is the only way to stop the encoder once it has started streaming video. - * - * Must be called with the hw_lock held. - */ -int go7007_reset_encoder(struct go7007 *go) -{ - if (go7007_load_encoder(go) < 0) - return -1; - return go7007_init_encoder(go); -} - -/* - * Attempt to instantiate an I2C client by ID, probably loading a module. - */ -static int init_i2c_module(struct i2c_adapter *adapter, const char *type, - int addr) -{ - struct go7007 *go = i2c_get_adapdata(adapter); - struct v4l2_device *v4l2_dev = &go->v4l2_dev; - - if (v4l2_i2c_new_subdev(v4l2_dev, adapter, type, addr, NULL)) - return 0; - - printk(KERN_INFO "go7007: probing for module i2c:%s failed\n", type); - return -1; -} - -/* - * Finalize the GO7007 hardware setup, register the on-board I2C adapter - * (if used on this board), load the I2C client driver for the sensor - * (SAA7115 or whatever) and other devices, and register the ALSA and V4L2 - * interfaces. - * - * Must NOT be called with the hw_lock held. - */ -int go7007_register_encoder(struct go7007 *go) -{ - int i, ret; - - printk(KERN_INFO "go7007: registering new %s\n", go->name); - - mutex_lock(&go->hw_lock); - ret = go7007_init_encoder(go); - mutex_unlock(&go->hw_lock); - if (ret < 0) - return -1; - - /* v4l2 init must happen before i2c subdevs */ - ret = go7007_v4l2_init(go); - if (ret < 0) - return ret; - - if (!go->i2c_adapter_online && - go->board_info->flags & GO7007_BOARD_USE_ONBOARD_I2C) { - if (go7007_i2c_init(go) < 0) - return -1; - go->i2c_adapter_online = 1; - } - if (go->i2c_adapter_online) { - for (i = 0; i < go->board_info->num_i2c_devs; ++i) - init_i2c_module(&go->i2c_adapter, - go->board_info->i2c_devs[i].type, - go->board_info->i2c_devs[i].addr); - if (go->board_id == GO7007_BOARDID_ADLINK_MPG24) - i2c_clients_command(&go->i2c_adapter, - DECODER_SET_CHANNEL, &go->channel_number); - } - if (go->board_info->flags & GO7007_BOARD_HAS_AUDIO) { - go->audio_enabled = 1; - go7007_snd_init(go); - } - return 0; -} -EXPORT_SYMBOL(go7007_register_encoder); - -/* - * Send the encode firmware to the encoder, which will cause it - * to immediately start delivering the video and audio streams. - * - * Must be called with the hw_lock held. - */ -int go7007_start_encoder(struct go7007 *go) -{ - u8 *fw; - int fw_len, rv = 0, i; - u16 intr_val, intr_data; - - go->modet_enable = 0; - if (!go->dvd_mode) - for (i = 0; i < 4; ++i) { - if (go->modet[i].enable) { - go->modet_enable = 1; - continue; - } - go->modet[i].pixel_threshold = 32767; - go->modet[i].motion_threshold = 32767; - go->modet[i].mb_threshold = 32767; - } - - if (go7007_construct_fw_image(go, &fw, &fw_len) < 0) - return -1; - - if (go7007_send_firmware(go, fw, fw_len) < 0 || - go7007_read_interrupt(go, &intr_val, &intr_data) < 0) { - v4l2_err(&go->v4l2_dev, "error transferring firmware\n"); - rv = -1; - goto start_error; - } - - go->state = STATE_DATA; - go->parse_length = 0; - go->seen_frame = 0; - if (go7007_stream_start(go) < 0) { - v4l2_err(&go->v4l2_dev, "error starting stream transfer\n"); - rv = -1; - goto start_error; - } - -start_error: - kfree(fw); - return rv; -} - -/* - * Store a byte in the current video buffer, if there is one. - */ -static inline void store_byte(struct go7007_buffer *gobuf, u8 byte) -{ - if (gobuf != NULL && gobuf->bytesused < GO7007_BUF_SIZE) { - unsigned int pgidx = gobuf->offset >> PAGE_SHIFT; - unsigned int pgoff = gobuf->offset & ~PAGE_MASK; - - *((u8 *)page_address(gobuf->pages[pgidx]) + pgoff) = byte; - ++gobuf->offset; - ++gobuf->bytesused; - } -} - -/* - * Deliver the last video buffer and get a new one to start writing to. - */ -static void frame_boundary(struct go7007 *go) -{ - struct go7007_buffer *gobuf; - int i; - - if (go->active_buf) { - if (go->active_buf->modet_active) { - if (go->active_buf->bytesused + 216 < GO7007_BUF_SIZE) { - for (i = 0; i < 216; ++i) - store_byte(go->active_buf, - go->active_map[i]); - go->active_buf->bytesused -= 216; - } else - go->active_buf->modet_active = 0; - } - go->active_buf->state = BUF_STATE_DONE; - wake_up_interruptible(&go->frame_waitq); - go->active_buf = NULL; - } - list_for_each_entry(gobuf, &go->stream, stream) - if (gobuf->state == BUF_STATE_QUEUED) { - gobuf->seq = go->next_seq; - do_gettimeofday(&gobuf->timestamp); - go->active_buf = gobuf; - break; - } - ++go->next_seq; -} - -static void write_bitmap_word(struct go7007 *go) -{ - int x, y, i, stride = ((go->width >> 4) + 7) >> 3; - - for (i = 0; i < 16; ++i) { - y = (((go->parse_length - 1) << 3) + i) / (go->width >> 4); - x = (((go->parse_length - 1) << 3) + i) % (go->width >> 4); - if (stride * y + (x >> 3) < sizeof(go->active_map)) - go->active_map[stride * y + (x >> 3)] |= - (go->modet_word & 1) << (x & 0x7); - go->modet_word >>= 1; - } -} - -/* - * Parse a chunk of the video stream into frames. The frames are not - * delimited by the hardware, so we have to parse the frame boundaries - * based on the type of video stream we're receiving. - */ -void go7007_parse_video_stream(struct go7007 *go, u8 *buf, int length) -{ - int i, seq_start_code = -1, frame_start_code = -1; - - spin_lock(&go->spinlock); - - switch (go->format) { - case GO7007_FORMAT_MPEG4: - seq_start_code = 0xB0; - frame_start_code = 0xB6; - break; - case GO7007_FORMAT_MPEG1: - case GO7007_FORMAT_MPEG2: - seq_start_code = 0xB3; - frame_start_code = 0x00; - break; - } - - for (i = 0; i < length; ++i) { - if (go->active_buf != NULL && - go->active_buf->bytesused >= GO7007_BUF_SIZE - 3) { - v4l2_info(&go->v4l2_dev, "dropping oversized frame\n"); - go->active_buf->offset -= go->active_buf->bytesused; - go->active_buf->bytesused = 0; - go->active_buf->modet_active = 0; - go->active_buf = NULL; - } - - switch (go->state) { - case STATE_DATA: - switch (buf[i]) { - case 0x00: - go->state = STATE_00; - break; - case 0xFF: - go->state = STATE_FF; - break; - default: - store_byte(go->active_buf, buf[i]); - break; - } - break; - case STATE_00: - switch (buf[i]) { - case 0x00: - go->state = STATE_00_00; - break; - case 0xFF: - store_byte(go->active_buf, 0x00); - go->state = STATE_FF; - break; - default: - store_byte(go->active_buf, 0x00); - store_byte(go->active_buf, buf[i]); - go->state = STATE_DATA; - break; - } - break; - case STATE_00_00: - switch (buf[i]) { - case 0x00: - store_byte(go->active_buf, 0x00); - /* go->state remains STATE_00_00 */ - break; - case 0x01: - go->state = STATE_00_00_01; - break; - case 0xFF: - store_byte(go->active_buf, 0x00); - store_byte(go->active_buf, 0x00); - go->state = STATE_FF; - break; - default: - store_byte(go->active_buf, 0x00); - store_byte(go->active_buf, 0x00); - store_byte(go->active_buf, buf[i]); - go->state = STATE_DATA; - break; - } - break; - case STATE_00_00_01: - if (buf[i] == 0xF8 && go->modet_enable == 0) { - /* MODET start code, but MODET not enabled */ - store_byte(go->active_buf, 0x00); - store_byte(go->active_buf, 0x00); - store_byte(go->active_buf, 0x01); - store_byte(go->active_buf, 0xF8); - go->state = STATE_DATA; - break; - } - /* If this is the start of a new MPEG frame, - * get a new buffer */ - if ((go->format == GO7007_FORMAT_MPEG1 || - go->format == GO7007_FORMAT_MPEG2 || - go->format == GO7007_FORMAT_MPEG4) && - (buf[i] == seq_start_code || - buf[i] == 0xB8 || /* GOP code */ - buf[i] == frame_start_code)) { - if (go->active_buf == NULL || go->seen_frame) - frame_boundary(go); - if (buf[i] == frame_start_code) { - if (go->active_buf != NULL) - go->active_buf->frame_offset = - go->active_buf->offset; - go->seen_frame = 1; - } else { - go->seen_frame = 0; - } - } - /* Handle any special chunk types, or just write the - * start code to the (potentially new) buffer */ - switch (buf[i]) { - case 0xF5: /* timestamp */ - go->parse_length = 12; - go->state = STATE_UNPARSED; - break; - case 0xF6: /* vbi */ - go->state = STATE_VBI_LEN_A; - break; - case 0xF8: /* MD map */ - go->parse_length = 0; - memset(go->active_map, 0, - sizeof(go->active_map)); - go->state = STATE_MODET_MAP; - break; - case 0xFF: /* Potential JPEG start code */ - store_byte(go->active_buf, 0x00); - store_byte(go->active_buf, 0x00); - store_byte(go->active_buf, 0x01); - go->state = STATE_FF; - break; - default: - store_byte(go->active_buf, 0x00); - store_byte(go->active_buf, 0x00); - store_byte(go->active_buf, 0x01); - store_byte(go->active_buf, buf[i]); - go->state = STATE_DATA; - break; - } - break; - case STATE_FF: - switch (buf[i]) { - case 0x00: - store_byte(go->active_buf, 0xFF); - go->state = STATE_00; - break; - case 0xFF: - store_byte(go->active_buf, 0xFF); - /* go->state remains STATE_FF */ - break; - case 0xD8: - if (go->format == GO7007_FORMAT_MJPEG) - frame_boundary(go); - /* fall through */ - default: - store_byte(go->active_buf, 0xFF); - store_byte(go->active_buf, buf[i]); - go->state = STATE_DATA; - break; - } - break; - case STATE_VBI_LEN_A: - go->parse_length = buf[i] << 8; - go->state = STATE_VBI_LEN_B; - break; - case STATE_VBI_LEN_B: - go->parse_length |= buf[i]; - if (go->parse_length > 0) - go->state = STATE_UNPARSED; - else - go->state = STATE_DATA; - break; - case STATE_MODET_MAP: - if (go->parse_length < 204) { - if (go->parse_length & 1) { - go->modet_word |= buf[i]; - write_bitmap_word(go); - } else - go->modet_word = buf[i] << 8; - } else if (go->parse_length == 207 && go->active_buf) { - go->active_buf->modet_active = buf[i]; - } - if (++go->parse_length == 208) - go->state = STATE_DATA; - break; - case STATE_UNPARSED: - if (--go->parse_length == 0) - go->state = STATE_DATA; - break; - } - } - - spin_unlock(&go->spinlock); -} -EXPORT_SYMBOL(go7007_parse_video_stream); - -/* - * Allocate a new go7007 struct. Used by the hardware-specific probe. - */ -struct go7007 *go7007_alloc(struct go7007_board_info *board, struct device *dev) -{ - struct go7007 *go; - int i; - - go = kmalloc(sizeof(struct go7007), GFP_KERNEL); - if (go == NULL) - return NULL; - go->dev = dev; - go->board_info = board; - go->board_id = 0; - go->tuner_type = -1; - go->channel_number = 0; - go->name[0] = 0; - mutex_init(&go->hw_lock); - init_waitqueue_head(&go->frame_waitq); - spin_lock_init(&go->spinlock); - go->video_dev = NULL; - go->ref_count = 0; - go->status = STATUS_INIT; - memset(&go->i2c_adapter, 0, sizeof(go->i2c_adapter)); - go->i2c_adapter_online = 0; - go->interrupt_available = 0; - init_waitqueue_head(&go->interrupt_waitq); - go->in_use = 0; - go->input = 0; - if (board->sensor_flags & GO7007_SENSOR_TV) { - go->standard = GO7007_STD_NTSC; - go->width = 720; - go->height = 480; - go->sensor_framerate = 30000; - } else { - go->standard = GO7007_STD_OTHER; - go->width = board->sensor_width; - go->height = board->sensor_height; - go->sensor_framerate = board->sensor_framerate; - } - go->encoder_v_offset = board->sensor_v_offset; - go->encoder_h_offset = board->sensor_h_offset; - go->encoder_h_halve = 0; - go->encoder_v_halve = 0; - go->encoder_subsample = 0; - go->streaming = 0; - go->format = GO7007_FORMAT_MJPEG; - go->bitrate = 1500000; - go->fps_scale = 1; - go->pali = 0; - go->aspect_ratio = GO7007_RATIO_1_1; - go->gop_size = 0; - go->ipb = 0; - go->closed_gop = 0; - go->repeat_seqhead = 0; - go->seq_header_enable = 0; - go->gop_header_enable = 0; - go->dvd_mode = 0; - go->interlace_coding = 0; - for (i = 0; i < 4; ++i) - go->modet[i].enable = 0; - for (i = 0; i < 1624; ++i) - go->modet_map[i] = 0; - go->audio_deliver = NULL; - go->audio_enabled = 0; - INIT_LIST_HEAD(&go->stream); - - return go; -} -EXPORT_SYMBOL(go7007_alloc); - -/* - * Detach and unregister the encoder. The go7007 struct won't be freed - * until v4l2 finishes releasing its resources and all associated fds are - * closed by applications. - */ -void go7007_remove(struct go7007 *go) -{ - if (go->i2c_adapter_online) { - if (i2c_del_adapter(&go->i2c_adapter) == 0) - go->i2c_adapter_online = 0; - else - v4l2_err(&go->v4l2_dev, - "error removing I2C adapter!\n"); - } - - if (go->audio_enabled) - go7007_snd_remove(go); - go7007_v4l2_remove(go); -} -EXPORT_SYMBOL(go7007_remove); - -MODULE_LICENSE("GPL v2"); |