[MTD] NAND: Fix breakage all over the place

Following problems are addressed:

- wrong status caused early break out of nand_wait()
- removed the bogus status check in nand_wait() which
  is a relict of the abandoned support for interrupted
  erase.
- status check moved to the correct place in read_oob
- oob support for syndrom based ecc with strange layouts
- use given offset in the AUTOOOB based oob operations

Partially based on a patch from Vitaly Vool <vwool@ru.mvista.com>
Thanks to Savin Zlobec <savin@epico.si> for tracking down the
status problem.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 11 insertions, 1 deletions

diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index bf2ce68901f5..a30969eb9afe 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -63,18 +63,21 @@ extern void nand_release (struct mtd_info *mtd);
  */
 #define NAND_CMD_READ0          0
 #define NAND_CMD_READ1          1
+#define NAND_CMD_RNDOUT         5
 #define NAND_CMD_PAGEPROG       0x10
 #define NAND_CMD_READOOB        0x50
 #define NAND_CMD_ERASE1         0x60
 #define NAND_CMD_STATUS         0x70
 #define NAND_CMD_STATUS_MULTI   0x71
 #define NAND_CMD_SEQIN          0x80
+#define NAND_CMD_RNDIN          0x85
 #define NAND_CMD_READID         0x90
 #define NAND_CMD_ERASE2         0xd0
 #define NAND_CMD_RESET          0xff
 
 /* Extended commands for large page devices */
 #define NAND_CMD_READSTART      0x30
+#define NAND_CMD_RNDOUTSTART    0xE0
 #define NAND_CMD_CACHEDPROG     0x15
 
 /* Extended commands for AG-AND device */
@@ -250,6 +253,13 @@ struct nand_ecc_ctrl {
         void                    (*write_page)(struct mtd_info *mtd,
                                               struct nand_chip *chip,
                                               const uint8_t *buf);
+        int                     (*read_oob)(struct mtd_info *mtd,
+                                            struct nand_chip *chip,
+                                            int page,
+                                            int sndcmd);
+        int                     (*write_oob)(struct mtd_info *mtd,
+                                             struct nand_chip *chip,
+                                             int page);
 };
 
 /**
@@ -339,7 +349,7 @@ struct nand_chip {
                                     unsigned int ctrl);
         int             (*dev_ready)(struct mtd_info *mtd);
         void            (*cmdfunc)(struct mtd_info *mtd, unsigned command, int column, int page_addr);
-        int             (*waitfunc)(struct mtd_info *mtd, struct nand_chip *this, int state);
+        int             (*waitfunc)(struct mtd_info *mtd, struct nand_chip *this);
         void            (*erase_cmd)(struct mtd_info *mtd, int page);
         int             (*scan_bbt)(struct mtd_info *mtd);
         int             (*errstat)(struct mtd_info *mtd, struct nand_chip *this, int state, int status, int page);