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authorJoe Hershberger <joe.hershberger@ni.com>2012-11-05 06:46:31 +0000
committerScott Wood <scottwood@freescale.com>2012-11-26 15:41:28 -0600
commitc788ecfdc3eb577757ffc1bfb8416added07ef33 (patch)
tree0e7c20915cd081937f0b504b102e744d48c2bd5c /include/linux
parent79da5e3d5d6be28d1c82265bbeb0ff4633fc5535 (diff)
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nand: Move the sub-page read support enable to a flag
Use a flag instead of a hard-coded macro so that sub-page reads can be enabled in other cases (such as on-die ecc). This is the same as a5ff4f102937a3492bca4a9ff0c341d78813414c in Linux Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/mtd/nand.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index f63e04b..e9e9045 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -194,6 +194,9 @@ typedef enum {
/* Device behaves just like nand, but is readonly */
#define NAND_ROM 0x00000800
+/* Device supports subpage reads */
+#define NAND_SUBPAGE_READ 0x00001000
+
/* Options valid for Samsung large page devices */
#define NAND_SAMSUNG_LP_OPTIONS \
(NAND_NO_PADDING | NAND_CACHEPRG | NAND_COPYBACK)
@@ -203,9 +206,7 @@ typedef enum {
#define NAND_MUST_PAD(chip) (!(chip->options & NAND_NO_PADDING))
#define NAND_HAS_CACHEPROG(chip) ((chip->options & NAND_CACHEPRG))
#define NAND_HAS_COPYBACK(chip) ((chip->options & NAND_COPYBACK))
-/* Large page NAND with SOFT_ECC should support subpage reads */
-#define NAND_SUBPAGE_READ(chip) ((chip->ecc.mode == NAND_ECC_SOFT) \
- && (chip->page_shift > 9))
+#define NAND_HAS_SUBPAGE_READ(chip) ((chip->options & NAND_SUBPAGE_READ))
/* Non chip related options */
/*