forge/linux-pinenote
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

mtd: add a helper to get the supported features for ONFI nand

Browse source 
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>
This commit is contained in:
Huang Shijie 2013-05-17 11:17:28 +08:00 • committed by David Woodhouse
commit 5b40db68cb
1 changed files with 10 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

10
include/linux/mtd/nand.h
View file

@ -202,6 +202,10 @@ typedef enum {
/* Keep gcc happy */ /* Keep gcc happy */
struct nand_chip; 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 */ /* ONFI timing mode, used in both asynchronous and synchronous mode */
#define ONFI_TIMING_MODE_0 (1 << 0) #define ONFI_TIMING_MODE_0 (1 << 0)
#define ONFI_TIMING_MODE_1 (1 << 1) #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 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. */ /* return the supported asynchronous timing mode. */
static inline int onfi_get_async_timing_mode(struct nand_chip *chip) static inline int onfi_get_async_timing_mode(struct nand_chip *chip)
{ {