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authorBastian Hecht <hechtb@googlemail.com>2012-03-01 10:48:38 +0100
committerDavid Woodhouse <David.Woodhouse@intel.com>2012-03-27 01:42:51 +0200
commitdd5ab248329edab4b16b70e4d9920f162d181d90 (patch)
treef517c5b835c4418080139729f782255be371bc92 /drivers
parentmtd: sh_flctl: Expand the READID command to 8 bytes (diff)
downloadlinux-dd5ab248329edab4b16b70e4d9920f162d181d90.tar.xz
linux-dd5ab248329edab4b16b70e4d9920f162d181d90.zip
mtd: sh_flctl: Implement NAND_CMD_RNDOUT command
Implements the command to seek and read in pages. 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.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c
index 407acb51469c..61e41c065db8 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);