diff options
| author | Dinesh Maniyam <dinesh.maniyam@intel.com> | 2025-02-27 00:18:22 +0800 |
|---|---|---|
| committer | Michael Trimarchi <michael@amarulasolutions.com> | 2025-03-15 10:35:01 +0100 |
| commit | 36b2a5d676b4a13c8e66b30d8ff99a5e529fd6d2 (patch) | |
| tree | bf83a9d470b2cc176d34dbf37c7c1c927f03f821 | |
| parent | dfba71f9657215a26fbd3609594610d0fabab91a (diff) | |
drivers: mtd: nand: cadence: Support cmd SET_FEATURES & GET_FEATURES
Support NAND_CMD_SET_FEATURES & NAND_CMD_GET_FEATURES.
These commands is one of the basic commands of NAND. The parameters get
from these commands will be used to set timing mode
of NAND data interface.
Signed-off-by: Dinesh Maniyam <dinesh.maniyam@intel.com>
| -rw-r--r-- | drivers/mtd/nand/raw/cadence_nand.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/mtd/nand/raw/cadence_nand.c b/drivers/mtd/nand/raw/cadence_nand.c index 720b0ebd6ae..71bab973776 100644 --- a/drivers/mtd/nand/raw/cadence_nand.c +++ b/drivers/mtd/nand/raw/cadence_nand.c @@ -2010,6 +2010,29 @@ static int cadence_nand_reset(struct mtd_info *mtd, unsigned int command) return 0; } +static int cadence_nand_features(struct mtd_info *mtd, u8 offset_in_page, u32 command) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + int ret = 0; + + ret = cadence_nand_cmd_opcode(chip, command); + if (ret) + return ret; + + ret = cadence_nand_cmd_address(chip, ONE_CYCLE, &offset_in_page); + if (ret) + return ret; + + if (command == NAND_CMD_GET_FEATURES) + ret = cadence_nand_cmd_data(chip, ONFI_SUBFEATURE_PARAM_LEN, + GCMD_DIR_READ); + else + ret = cadence_nand_cmd_data(chip, ONFI_SUBFEATURE_PARAM_LEN, + GCMD_DIR_WRITE); + + return ret; +} + static void cadence_nand_cmdfunc(struct mtd_info *mtd, unsigned int command, int offset_in_page, int page) { @@ -2034,6 +2057,11 @@ static void cadence_nand_cmdfunc(struct mtd_info *mtd, unsigned int command, case NAND_CMD_RESET: ret = cadence_nand_reset(mtd, command); break; + + case NAND_CMD_SET_FEATURES: + case NAND_CMD_GET_FEATURES: + ret = cadence_nand_features(mtd, offset_in_page, command); + break; /* * ecc will override other command for read, write and erase */ @@ -2076,6 +2104,8 @@ static u8 cadence_nand_read_byte(struct mtd_info *mtd) size = 8; else if (cadence->cmd == NAND_CMD_PARAM) size = sizeof(struct nand_jedec_params); + else if (cadence->cmd == NAND_CMD_GET_FEATURES) + size = ONFI_SUBFEATURE_PARAM_LEN; cadence_nand_read_buf(mtd, &cadence->buf[0], size); } |