mtd: add helpers to get the supportted ONFI timing mode (3e70192c) · Commits · 戴 / test

include/linux/mtd/nand.h

+25 −0

Original line number	Diff line number	Diff line
		@@ -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 */