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Date: Fri, 17 May 2013 11:17:28 +0800 From: Huang Shijie <b32955@...escale.com> To: <dwmw2@...radead.org> CC: <dedekind1@...il.com>, <computersforpeace@...il.com>, <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>, <vikram186@...il.com>, Huang Shijie <shijie8@...il.com>, Huang Shijie <b32955@...escale.com> Subject: [PATCH v6 04/10] mtd: add a helper to get the supported features for ONFI nand From: Huang Shijie <shijie8@...il.com> add a helper to get the supported features for ONFI nand. Also add the neccessary macros. Signed-off-by: Huang Shijie <b32955@...escale.com> --- 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 f1ce48e..9574e0a 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) @@ -753,6 +757,12 @@ 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) { -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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