[PATCH v3 4/7] mtd: sh_flctl: Implement NAND_CMD_RNDOUT command

Bastian Hecht
2012-03-01T09:49:25Z

Implements the command to seek and read in pages.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
---
changelog: the code only works for software ecc. Make this explicit in
the code

drivers/mtd/nand/sh_flctl.c | 16 ++++++++++++++++
1 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c
index 407acb5..655ff2d 100644
--- a/drivers/mtd/nand/sh_flctl.c
+++ b/drivers/mtd/nand/sh_flctl.c
@@ -303,6 +303,7 @@ static void set_cmd_regs(struct mtd_info *mtd, uint32_t cmd, uint32_t flcmcdr_va
break;
case NAND_CMD_READ0:
case NAND_CMD_READOOB:
+ case NAND_CMD_RNDOUT:
addr_len_bytes = flctl->rw_ADRCNT;
flcmdcr_val |= CDSRC_E;
if (flctl->chip.options & NAND_BUSWIDTH_16)
@@ -558,6 +559,21 @@ static void flctl_cmdfunc(struct mtd_info *mtd, unsigned int command,
flctl->read_bytes = mtd->oobsize;
goto read_normal_exit;

+ case NAND_CMD_RNDOUT:
+ if (flctl->hwecc)
+ break;
+
+ if (flctl->page_size)
+ set_cmd_regs(mtd, command, (NAND_CMD_RNDOUTSTART << 8)
+ | command);
+ else
+ set_cmd_regs(mtd, command, command);
+
+ set_addr(mtd, column, 0);
+
+ flctl->read_bytes = mtd->writesize + mtd->oobsize - column;
+ goto read_normal_exit;
+
case NAND_CMD_READID:
set_cmd_regs(mtd, command, command);

--
1.7.5.4