diff options
Diffstat (limited to 'drivers/mtd/nand/spi')
| -rw-r--r-- | drivers/mtd/nand/spi/gigadevice.c | 79 |
1 files changed, 69 insertions, 10 deletions
diff --git a/drivers/mtd/nand/spi/gigadevice.c b/drivers/mtd/nand/spi/gigadevice.c index 5de0ebbb7b..a2c93486f4 100644 --- a/drivers/mtd/nand/spi/gigadevice.c +++ b/drivers/mtd/nand/spi/gigadevice.c @@ -17,9 +17,13 @@ #define GD5FXGQ4XA_STATUS_ECC_1_7_BITFLIPS (1 << 4) #define GD5FXGQ4XA_STATUS_ECC_8_BITFLIPS (3 << 4) -#define GD5FXGQ4XEXXG_REG_STATUS2 0xf0 +#define GD5FXGQ5XE_STATUS_ECC_1_4_BITFLIPS (1 << 4) +#define GD5FXGQ5XE_STATUS_ECC_4_BITFLIPS (3 << 4) -static SPINAND_OP_VARIANTS(read_cache_variants, +#define GD5FXGQXXEXXG_REG_STATUS2 0xf0 + +/* Q4 devices, QUADIO: Dummy bytes valid for 1 and 2 GBit variants */ +static SPINAND_OP_VARIANTS(gd5fxgq4_read_cache_variants, SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 1, NULL, 0), SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0), @@ -27,6 +31,15 @@ static SPINAND_OP_VARIANTS(read_cache_variants, SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0), SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0)); +/* Q5 devices, QUADIO: Dummy bytes only valid for 1 GBit variants */ +static SPINAND_OP_VARIANTS(gd5f1gq5_read_cache_variants, + SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0), + SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), + SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0), + SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0), + SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0), + SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0)); + static SPINAND_OP_VARIANTS(write_cache_variants, SPINAND_PROG_LOAD_X4(true, 0, NULL, 0), SPINAND_PROG_LOAD(true, 0, NULL, 0)); @@ -35,7 +48,7 @@ static SPINAND_OP_VARIANTS(update_cache_variants, SPINAND_PROG_LOAD_X4(false, 0, NULL, 0), SPINAND_PROG_LOAD(false, 0, NULL, 0)); -static int gd5fxgq4xexxg_ooblayout_ecc(struct mtd_info *mtd, int section, +static int gd5fxgqxxexxg_ooblayout_ecc(struct mtd_info *mtd, int section, struct mtd_oob_region *region) { if (section) @@ -47,7 +60,7 @@ static int gd5fxgq4xexxg_ooblayout_ecc(struct mtd_info *mtd, int section, return 0; } -static int gd5fxgq4xexxg_ooblayout_free(struct mtd_info *mtd, int section, +static int gd5fxgqxxexxg_ooblayout_free(struct mtd_info *mtd, int section, struct mtd_oob_region *region) { if (section) @@ -64,7 +77,7 @@ static int gd5fxgq4xexxg_ecc_get_status(struct spinand_device *spinand, u8 status) { u8 status2; - struct spi_mem_op op = SPINAND_GET_FEATURE_OP(GD5FXGQ4XEXXG_REG_STATUS2, + struct spi_mem_op op = SPINAND_GET_FEATURE_OP(GD5FXGQXXEXXG_REG_STATUS2, &status2); int ret; @@ -102,21 +115,67 @@ static int gd5fxgq4xexxg_ecc_get_status(struct spinand_device *spinand, return -EINVAL; } -static const struct mtd_ooblayout_ops gd5fxgq4xexxg_ooblayout = { - .ecc = gd5fxgq4xexxg_ooblayout_ecc, - .rfree = gd5fxgq4xexxg_ooblayout_free, +static int gd5fxgq5xexxg_ecc_get_status(struct spinand_device *spinand, + u8 status) +{ + u8 status2; + struct spi_mem_op op = SPINAND_GET_FEATURE_OP(GD5FXGQXXEXXG_REG_STATUS2, + &status2); + int ret; + + switch (status & STATUS_ECC_MASK) { + case STATUS_ECC_NO_BITFLIPS: + return 0; + + case GD5FXGQ5XE_STATUS_ECC_1_4_BITFLIPS: + /* + * Read status2 register to determine a more fine grained + * bit error status + */ + ret = spi_mem_exec_op(spinand->slave, &op); + if (ret) + return ret; + + /* + * 1 ... 4 bits are flipped (and corrected) + */ + /* bits sorted this way (1...0): ECCSE1, ECCSE0 */ + return ((status2 & STATUS_ECC_MASK) >> 4) + 1; + + case STATUS_ECC_UNCOR_ERROR: + return -EBADMSG; + + default: + break; + } + + return -EINVAL; +} + +static const struct mtd_ooblayout_ops gd5fxgqxxexxg_ooblayout = { + .ecc = gd5fxgqxxexxg_ooblayout_ecc, + .rfree = gd5fxgqxxexxg_ooblayout_free, }; static const struct spinand_info gigadevice_spinand_table[] = { SPINAND_INFO("GD5F1GQ4UExxG", 0xd1, NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), NAND_ECCREQ(8, 512), - SPINAND_INFO_OP_VARIANTS(&read_cache_variants, + SPINAND_INFO_OP_VARIANTS(&gd5fxgq4_read_cache_variants, &write_cache_variants, &update_cache_variants), 0, - SPINAND_ECCINFO(&gd5fxgq4xexxg_ooblayout, + SPINAND_ECCINFO(&gd5fxgqxxexxg_ooblayout, gd5fxgq4xexxg_ecc_get_status)), + SPINAND_INFO("GD5F1GQ5UExxG", 0x51, + NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), + NAND_ECCREQ(4, 512), + SPINAND_INFO_OP_VARIANTS(&gd5f1gq5_read_cache_variants, + &write_cache_variants, + &update_cache_variants), + 0, + SPINAND_ECCINFO(&gd5fxgqxxexxg_ooblayout, + gd5fxgq5xexxg_ecc_get_status)), }; static int gigadevice_spinand_detect(struct spinand_device *spinand) |