[PATCH] mtd: atmel_nand: use the new ONFI parameters, ecc_strength_ds & ecc_step_ds
From: Josh Wu <hidden>
Date: 2013-08-09 08:56:45
Subsystem:
memory technology devices (mtd), nand flash subsystem, the rest · Maintainers:
Miquel Raynal, Richard Weinberger, Vignesh Raghavendra, Linus Torvalds
commit d99650181 (mtd: get the ECC info from the parameter page for ONFI nand) will get ecc_strength_ds and ecc_step_ds during ONFI detecting. So we can use them directly and remove our own get_onfi_ecc_param function. Signed-off-by: Josh Wu <redacted> --- drivers/mtd/nand/atmel_nand.c | 36 ++++-------------------------------- 1 file changed, 4 insertions(+), 32 deletions(-)
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index 0e365da..162161b 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c@@ -1062,30 +1062,6 @@ static void atmel_pmecc_core_init(struct mtd_info *mtd) } /* - * Get ECC requirement in ONFI parameters, returns -1 if ONFI - * parameters is not supported. - * return 0 if success to get the ECC requirement. - */ -static int get_onfi_ecc_param(struct nand_chip *chip, - int *ecc_bits, int *sector_size) -{ - *ecc_bits = *sector_size = 0; - - if (chip->onfi_params.ecc_bits == 0xff) - /* TODO: the sector_size and ecc_bits need to be find in - * extended ecc parameter, currently we don't support it. - */ - return -1; - - *ecc_bits = chip->onfi_params.ecc_bits; - - /* The default sector size (ecc codeword size) is 512 */ - *sector_size = 512; - - return 0; -} - -/* * Get ecc requirement from ONFI parameters ecc requirement. * If pmecc-cap, pmecc-sector-size in DTS are not specified, this function * will set them according to ONFI ecc requirement. Otherwise, use the
@@ -1096,19 +1072,15 @@ static int pmecc_choose_ecc(struct atmel_nand_host *host, int *cap, int *sector_size) { /* Get ECC requirement from ONFI parameters */ - *cap = *sector_size = 0; if (host->nand_chip.onfi_version) { - if (!get_onfi_ecc_param(&host->nand_chip, cap, sector_size)) - dev_info(host->dev, "ONFI params, minimum required ECC: %d bits in %d bytes\n", + *cap = host->nand_chip.ecc_strength_ds; + *sector_size = host->nand_chip.ecc_step_ds; + dev_info(host->dev, "ONFI params, minimum required ECC: %d bits in %d bytes\n", *cap, *sector_size); - else - dev_info(host->dev, "NAND chip ECC reqirement is in Extended ONFI parameter, we don't support yet.\n"); } else { - dev_info(host->dev, "NAND chip is not ONFI compliant, assume ecc_bits is 2 in 512 bytes"); - } - if (*cap == 0 && *sector_size == 0) { *cap = 2; *sector_size = 512; + dev_info(host->dev, "NAND chip is not ONFI compliant, assume ecc_bits is 2 in 512 bytes"); } /* If dts file doesn't specify then use the one in ONFI parameters */
--
1.7.9.5