From: Huang Shijie <[email protected]> add a helper to get the supported features for ONFI nand. Also add the neccessary macros.
Signed-off-by: Huang Shijie <[email protected]> --- include/linux/mtd/nand.h | 13 +++++++++++++ 1 files changed, 13 insertions(+), 0 deletions(-) diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 210bf36..122322c 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -202,6 +202,11 @@ 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) +#define ONFI_FEATURE_UNKNOWN (1 << 15) + /* ONFI timing mode, used in both asynchronous and synchronous mode */ #define ONFI_TIMING_MODE_0 (1 << 0) #define ONFI_TIMING_MODE_1 (1 << 1) @@ -750,6 +755,14 @@ 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) +{ + if (!chip->onfi_version) + return ONFI_FEATURE_UNKNOWN; + return le16_to_cpu(chip->onfi_params.features); +} + /* return the supported asynchronous timing mode. */ static inline int onfi_get_async_timing_mode(struct nand_chip *chip) { -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
