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| author |   Huang Shijie <shijie8@gmail.com> | 2013-05-17 11:17:28 +0800 |
|---|---|---|
| committer |   David Woodhouse <David.Woodhouse@intel.com> | 2013-08-30 21:34:41 +0100 |
| commit | 5b40db68cb1bd14b3d5b159754c9c1bc3bdeb080 (patch) | |
| tree | 315d52c82d8c4997e6e5354960101648be966b66 /include/linux/mtd | |
| parent | mtd: add data structures for Extended Parameter Page (diff) | |
| download | linux-dev-5b40db68cb1bd14b3d5b159754c9c1bc3bdeb080.tar.xz linux-dev-5b40db68cb1bd14b3d5b159754c9c1bc3bdeb080.zip | |
mtd: add a helper to get the supported features for ONFI nand
add a helper to get the supported features for ONFI nand.
Also add the neccessary macros.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Reviewed-and-tested-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'include/linux/mtd')
| -rw-r--r-- | include/linux/mtd/nand.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 01a7f3c71bd0..bf4c566f0647 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -202,6 +202,10 @@ typedef enum { /* Keep gcc happy */ struct nand_chip; +/* ONFI features */ +#define ONFI_FEATURE_16_BIT_BUS (1 << 0) +#define ONFI_FEATURE_EXT_PARAM_PAGE (1 << 7) + /* ONFI timing mode, used in both asynchronous and synchronous mode */ #define ONFI_TIMING_MODE_0 (1 << 0) #define ONFI_TIMING_MODE_1 (1 << 1) @@ -756,6 +760,12 @@ struct platform_nand_chip *get_platform_nandchip(struct mtd_info *mtd) return chip->priv; } +/* return the supported features. */ +static inline int onfi_feature(struct nand_chip *chip) +{ + return chip->onfi_version ? le16_to_cpu(chip->onfi_params.features) : 0; +} + /* return the supported asynchronous timing mode. */ static inline int onfi_get_async_timing_mode(struct nand_chip *chip) { |