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mtd: add helpers to set/get features for ONFI nand

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Add the set-features(0xef)/get-features(0xee) helpers for ONFI nand.
Also add the necessary macros.

Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Huang Shijie 2012-09-13 14:57:52 +08:00 • committed by David Woodhouse
parent 2caf87a49e
commit 7db03eccfc
2 changed files with 64 additions and 0 deletions
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14
include/linux/mtd/nand.h
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@ -92,6 +92,8 @@ extern int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
#define NAND_CMD_READID 0x90
#define NAND_CMD_ERASE2 0xd0
#define NAND_CMD_PARAM 0xec
#define NAND_CMD_GET_FEATURES 0xee
#define NAND_CMD_SET_FEATURES 0xef
#define NAND_CMD_RESET 0xff
#define NAND_CMD_LOCK 0x2a
@ -229,6 +231,12 @@ typedef enum {
/* Keep gcc happy */
struct nand_chip;
/* ONFI feature address */
#define ONFI_FEATURE_ADDR_TIMING_MODE 0x1
/* ONFI subfeature parameters length */
#define ONFI_SUBFEATURE_PARAM_LEN 4
struct nand_onfi_params {
/* rev info and features block */
/* 'O' 'N' 'F' 'I' */
@ -454,6 +462,8 @@ struct nand_buffers {
* non 0 if ONFI supported.
* @onfi_params: [INTERN] holds the ONFI page parameter when ONFI is
* supported, 0 otherwise.
* @onfi_set_features [REPLACEABLE] set the features for ONFI nand
* @onfi_get_features [REPLACEABLE] get the features for ONFI nand
* @ecclayout: [REPLACEABLE] the default ECC placement scheme
* @bbt: [INTERN] bad block table pointer
* @bbt_td: [REPLACEABLE] bad block table descriptor for flash
@ -496,6 +506,10 @@ struct nand_chip {
int (*write_page)(struct mtd_info *mtd, struct nand_chip *chip,
const uint8_t *buf, int oob_required, int page,
int cached, int raw);
int (*onfi_set_features)(struct mtd_info *mtd, struct nand_chip *chip,
int feature_addr, uint8_t *subfeature_para);
int (*onfi_get_features)(struct mtd_info *mtd, struct nand_chip *chip,
int feature_addr, uint8_t *subfeature_para);
int chip_delay;
unsigned int options;