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| author | Huang Shijie <b32955@freescale.com> | 2012-09-13 14:57:53 +0800 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-09-29 15:54:36 +0100 |
| commit | 3e70192c41ac607c63c31ea00be62dd9afb85575 (patch) | |
| tree | ff2aa44bf95277598c1add5b0586ecc274ab8811 | |
| parent | 7db03eccfc23783a95dd78383b3fad55224aaa7b (diff) | |
| download | linux-stable-3e70192c41ac607c63c31ea00be62dd9afb85575.tar.gz linux-stable-3e70192c41ac607c63c31ea00be62dd9afb85575.tar.bz2 linux-stable-3e70192c41ac607c63c31ea00be62dd9afb85575.zip | |
mtd: add helpers to get the supportted ONFI timing mode
add onfi_get_async_timing_mode() to get the supportted asynchronous
timing mode.
add onfi_get_sync_timing_mode() to get the supportted synchronous
timing mode.
Also add the neccessary macros : the timing modes.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| -rw-r--r-- | include/linux/mtd/nand.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 922f313970d4..2beeb6e4e4e6 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -231,6 +231,15 @@ typedef enum { /* Keep gcc happy */ struct nand_chip; +/* ONFI timing mode, used in both asynchronous and synchronous mode */ +#define ONFI_TIMING_MODE_0 (1 << 0) +#define ONFI_TIMING_MODE_1 (1 << 1) +#define ONFI_TIMING_MODE_2 (1 << 2) +#define ONFI_TIMING_MODE_3 (1 << 3) +#define ONFI_TIMING_MODE_4 (1 << 4) +#define ONFI_TIMING_MODE_5 (1 << 5) +#define ONFI_TIMING_MODE_UNKNOWN (1 << 6) + /* ONFI feature address */ #define ONFI_FEATURE_ADDR_TIMING_MODE 0x1 @@ -684,4 +693,20 @@ struct platform_nand_chip *get_platform_nandchip(struct mtd_info *mtd) return chip->priv; } +/* return the supported asynchronous timing mode. */ +static inline int onfi_get_async_timing_mode(struct nand_chip *chip) +{ + if (!chip->onfi_version) + return ONFI_TIMING_MODE_UNKNOWN; + return le16_to_cpu(chip->onfi_params.async_timing_mode); +} + +/* return the supported synchronous timing mode. */ +static inline int onfi_get_sync_timing_mode(struct nand_chip *chip) +{ + if (!chip->onfi_version) + return ONFI_TIMING_MODE_UNKNOWN; + return le16_to_cpu(chip->onfi_params.src_sync_timing_mode); +} + #endif /* __LINUX_MTD_NAND_H */ |