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authorBrian Norris <computersforpeace@gmail.com>2012-09-24 20:40:54 -0700
committerDavid Woodhouse <David.Woodhouse@intel.com>2012-09-29 15:58:15 +0100
commit73ca392f7d4a175dcf7b56a3c35efc92a55a5473 (patch)
tree0eb2d8ebab3bb62714cb0123b03f90246aaeabdf /drivers/mtd
parentb9e48534d8f4eb17d531f54d2cb3b9138db13ccb (diff)
mtd: nand: decode Hynix MLC, 6-byte ID length
Hynix has introduced a new ID decoding scheme for their newer MLC, some of which don't support ONFI. The following devices all follow the pattern given in the datasheet for Hynix H27UBG8T2B, p.22: Hynix H27UAG8T2A Hynix H27UBG8T2A Hynix H27UBG8T2B Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/nand/nand_base.c45
1 files changed, 44 insertions, 1 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 5365ad569f5..30476514063 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2984,8 +2984,10 @@ static void nand_decode_ext_id(struct mtd_info *mtd, struct nand_chip *chip,
* Field definitions are in the following datasheets:
* Old style (4,5 byte ID): Samsung K9GAG08U0M (p.32)
* New style (6 byte ID): Samsung K9GBG08U0M (p.40)
+ * Hynix MLC (6 byte ID): Hynix H27UBG8T2B (p.22)
*
- * Check for ID length + Samsung ID to decide what to do.
+ * Check for ID length, cell type, and Hynix/Samsung ID to decide what
+ * to do.
*/
if (id_len == 6 && id_data[0] == NAND_MFR_SAMSUNG &&
(chip->cellinfo & NAND_CI_CELLTYPE_MSK)) {
@@ -3012,6 +3014,47 @@ static void nand_decode_ext_id(struct mtd_info *mtd, struct nand_chip *chip,
mtd->erasesize = (128 * 1024) <<
(((extid >> 1) & 0x04) | (extid & 0x03));
*busw = 0;
+ } else if (id_len == 6 && id_data[0] == NAND_MFR_HYNIX &&
+ (chip->cellinfo & NAND_CI_CELLTYPE_MSK)) {
+ unsigned int tmp;
+
+ /* Calc pagesize */
+ mtd->writesize = 2048 << (extid & 0x03);
+ extid >>= 2;
+ /* Calc oobsize */
+ switch (((extid >> 2) & 0x04) | (extid & 0x03)) {
+ case 0:
+ mtd->oobsize = 128;
+ break;
+ case 1:
+ mtd->oobsize = 224;
+ break;
+ case 2:
+ mtd->oobsize = 448;
+ break;
+ case 3:
+ mtd->oobsize = 64;
+ break;
+ case 4:
+ mtd->oobsize = 32;
+ break;
+ case 5:
+ mtd->oobsize = 16;
+ break;
+ default:
+ mtd->oobsize = 640;
+ break;
+ }
+ extid >>= 2;
+ /* Calc blocksize */
+ tmp = ((extid >> 1) & 0x04) | (extid & 0x03);
+ if (tmp < 0x03)
+ mtd->erasesize = (128 * 1024) << tmp;
+ else if (tmp == 0x03)
+ mtd->erasesize = 768 * 1024;
+ else
+ mtd->erasesize = (64 * 1024) << tmp;
+ *busw = 0;
} else {
/* Calc pagesize */
mtd->writesize = 1024 << (extid & 0x03);