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>

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c
index 407acb51469..61e41c065db 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);