diff options
| author | Bastian Hecht <hechtb@googlemail.com> | 2012-03-01 13:48:37 +0400 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-03-27 03:42:44 +0400 |
| commit | 7b6b23036b43a418198be9468d4dc4c9ea79c2e8 (patch) | |
| tree | 1c6b8391e8141e7d2490f422a926718a63140c15 /drivers | |
| parent | abb59ef3fa7d9b19a193f7f69f9d5746c7dfeec9 (diff) | |
| download | linux-7b6b23036b43a418198be9468d4dc4c9ea79c2e8.tar.xz | |
mtd: sh_flctl: Expand the READID command to 8 bytes
The nand base code wants to read out 8 bytes in the READID command.
Reflect this in the driver code.
Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/nand/sh_flctl.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c index 9291066419e1..407acb51469c 100644 --- a/drivers/mtd/nand/sh_flctl.c +++ b/drivers/mtd/nand/sh_flctl.c @@ -320,6 +320,7 @@ static void set_cmd_regs(struct mtd_info *mtd, uint32_t cmd, uint32_t flcmcdr_va break; case NAND_CMD_READID: flcmncr_val &= ~SNAND_E; + flcmdcr_val |= CDSRC_E; addr_len_bytes = ADRCNT_1; break; case NAND_CMD_STATUS: @@ -559,13 +560,18 @@ static void flctl_cmdfunc(struct mtd_info *mtd, unsigned int command, case NAND_CMD_READID: set_cmd_regs(mtd, command, command); - set_addr(mtd, 0, 0); - flctl->read_bytes = 4; + /* READID is always performed using an 8-bit bus */ + if (flctl->chip.options & NAND_BUSWIDTH_16) + column <<= 1; + set_addr(mtd, column, 0); + + flctl->read_bytes = 8; writel(flctl->read_bytes, FLDTCNTR(flctl)); /* set read size */ empty_fifo(flctl); start_translation(flctl); - read_datareg(flctl, 0); /* read and end */ + read_fiforeg(flctl, flctl->read_bytes, 0); + wait_completion(flctl); break; case NAND_CMD_ERASE1: |