diff options
| author | Huang Shijie <b32955@freescale.com> | 2014-02-21 13:39:39 +0800 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@freescale.com> | 2015-09-17 08:57:52 -0500 |
| commit | bb83d11875552e73c4b8cb68ed5556fea441a962 (patch) | |
| tree | 91d31fe1d14acfbf7cf171d0e3afc164700fc853 /include/linux/mtd/nand.h | |
| parent | 29dc31d16a620ed778dfcc58b97d8d691de87076 (diff) | |
mtd: nand: add a helper to get the supported features for JEDEC
Add a helper to get the supported features for JEDEC compliant NAND.
Also add a macro JEDEC_FEATURE_16_BIT_BUS.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'include/linux/mtd/nand.h')
| -rw-r--r-- | include/linux/mtd/nand.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 384f3378a29b..0d5e86999d74 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -350,6 +350,9 @@ struct jedec_ecc_info { u8 reserved[2]; } __packed; +/* JEDEC features */ +#define JEDEC_FEATURE_16_BIT_BUS (1 << 0) + struct nand_jedec_params { /* rev info and features block */ /* 'J' 'E' 'S' 'D' */ @@ -925,4 +928,10 @@ static inline int nand_opcode_8bits(unsigned int command) return command == NAND_CMD_READID; } +/* return the supported JEDEC features. */ +static inline int jedec_feature(struct nand_chip *chip) +{ + return chip->jedec_version ? le16_to_cpu(chip->jedec_params.features) + : 0; +} #endif /* __LINUX_MTD_NAND_H */ |