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drivers: mtd: nand: cadence: Support cmd SET_FEATURES & GET_FEATURES

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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>
This commit is contained in:
Dinesh Maniyam
2025-02-27 00:18:22 +08:00
committed by Michael Trimarchi
parent dfba71f965
commit 36b2a5d676
1 changed files with 30 additions and 0 deletions
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30
drivers/mtd/nand/raw/cadence_nand.c
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@@ -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);
}