diff options
| author | Stefan Agner <stefan@agner.ch> | 2015-04-07 17:38:42 +0200 |
|---|---|---|
| committer | Stefan Agner <stefan@agner.ch> | 2015-04-14 09:08:07 +0200 |
| commit | 5dc36fa697d2351bc8b68982b3e62cdafc47ed9c (patch) | |
| tree | 2bfe4a748b2203a6a0c5ab70fc6549a7d33a8469 | |
| parent | 5c18020e30f0131bf2ff1a6640d3b00bdabcab3c (diff) | |
mtd: vf610_nfc: remove read on SEQIN
Since we do not support sub-page writes anyway, reading the page
back to the controller on SEQIN command is not required. Remove
the page read on SEQIN.
However, the column/page values relevant to the SEQIN command, hence
set the column/row address on SEQIN command.
| -rw-r--r-- | drivers/mtd/nand/vf610_nfc.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/mtd/nand/vf610_nfc.c b/drivers/mtd/nand/vf610_nfc.c index fa0bb9dcaf..66b335d008 100644 --- a/drivers/mtd/nand/vf610_nfc.c +++ b/drivers/mtd/nand/vf610_nfc.c @@ -345,24 +345,26 @@ static void vf610_nfc_command(struct mtd_info *mtd, unsigned command, nfc->alt_buf = 0; switch (command) { + case NAND_CMD_SEQIN: + /* Use valid column/page from preread... */ + vf610_nfc_addr_cycle(mtd, column, page); + /* + * SEQIN => data => PAGEPROG sequence is done by the controller + * hence we do not need to issue the command here... + */ + return; case NAND_CMD_PAGEPROG: vf610_nfc_transfer_size(nfc->regs, nfc->page_sz); vf610_nfc_send_commands(nfc->regs, NAND_CMD_SEQIN, command, PROGRAM_PAGE_CMD_CODE); - vf610_nfc_addr_cycle(mtd, column, page); break; case NAND_CMD_RESET: vf610_nfc_transfer_size(nfc->regs, 0); vf610_nfc_send_command(nfc->regs, command, RESET_CMD_CODE); break; - /* - * NFC does not support sub-page reads and writes, - * so emulate them using full page transfers. - */ case NAND_CMD_READOOB: nfc->spareonly = 1; - case NAND_CMD_SEQIN: /* Pre-read for partial writes. */ case NAND_CMD_READ0: column = 0; vf610_nfc_transfer_size(nfc->regs, nfc->page_sz); |