[PATCH v3 37/37] mtd: nand: denali: enable bad block table scan

[Masahiro Yamada <yamada.masahiro@socionext.com>]

Now this driver is ready to remove NAND_SKIP_BBTSCAN.

The BBT descriptors in denali.c are equivalent to the ones in
nand_bbt.c.  There is no need to duplicate the equivalent structures.
The with-oob decriptors do not work for this driver anyway.

The bbt_pattern (offs = 8) and the version (veroffs = 12) area
overlaps the ECC area.  Set NAND_BBT_NO_OOB flag to use the no_oob
variant of the BBT descriptors.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

Changes in v3: None
Changes in v2:
  - Newly added

 drivers/mtd/nand/denali.c | 31 ++-----------------------------
 1 file changed, 2 insertions(+), 29 deletions(-)

diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c
index d10702d..de27c73 100644
--- a/drivers/mtd/nand/denali.c
+++ b/drivers/mtd/nand/denali.c
@@ -1249,29 +1249,6 @@ static const struct mtd_ooblayout_ops denali_ooblayout_ops = {
 	.free = denali_ooblayout_free,
 };
 
-static uint8_t bbt_pattern[] = {'B', 'b', 't', '0' };
-static uint8_t mirror_pattern[] = {'1', 't', 'b', 'B' };
-
-static struct nand_bbt_descr bbt_main_descr = {
-	.options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
-		| NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP,
-	.offs =	8,
-	.len = 4,
-	.veroffs = 12,
-	.maxblocks = 4,
-	.pattern = bbt_pattern,
-};
-
-static struct nand_bbt_descr bbt_mirror_descr = {
-	.options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
-		| NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP,
-	.offs =	8,
-	.len = 4,
-	.veroffs = 12,
-	.maxblocks = 4,
-	.pattern = mirror_pattern,
-};
-
 /* initialize driver data structures */
 static void denali_drv_init(struct denali_nand_info *denali)
 {
@@ -1413,13 +1390,9 @@ int denali_init(struct denali_nand_info *denali)
 	 * bad block management.
 	 */
 
-	/* Bad block management */
-	chip->bbt_td = &bbt_main_descr;
-	chip->bbt_md = &bbt_mirror_descr;
-
-	/* skip the scan for now until we have OOB read and write support */
 	chip->bbt_options |= NAND_BBT_USE_FLASH;
-	chip->options |= NAND_SKIP_BBTSCAN;
+	chip->bbt_options |= NAND_BBT_NO_OOB;
+
 	chip->ecc.mode = NAND_ECC_HW_SYNDROME;
 
 	/* no subpage writes on denali */
-- 
2.7.4