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authorHuang Shijie <shijie8@gmail.com>2013-05-17 11:17:28 +0800
committerDavid Woodhouse <David.Woodhouse@intel.com>2013-08-30 21:34:41 +0100
commit5b40db68cb1bd14b3d5b159754c9c1bc3bdeb080 (patch)
tree315d52c82d8c4997e6e5354960101648be966b66 /include/linux/mtd
parent5138a98f6f47ce62a86cce4b9c381aaf4ad3a643 (diff)
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.h10
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)
{