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nand: Move the sub-page read support enable to a flag

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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>
This commit is contained in:
Joe Hershberger
2012-11-05 06:46:31 +00:00
committed by Scott Wood
parent 79da5e3d5d
commit c788ecfdc3
2 changed files with 11 additions and 5 deletions
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7
include/linux/mtd/nand.h
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@@ -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 */
/*