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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Author:
- * Felix Matouschek <[email protected]>
- */
- #include <linux/device.h>
- #include <linux/kernel.h>
- #include <linux/mtd/spinand.h>
- #define SPINAND_MFR_XTX 0x0B
- #define XT26G0XA_STATUS_ECC_MASK GENMASK(5, 2)
- #define XT26G0XA_STATUS_ECC_NO_DETECTED (0 << 2)
- #define XT26G0XA_STATUS_ECC_8_CORRECTED (3 << 4)
- #define XT26G0XA_STATUS_ECC_UNCOR_ERROR (2 << 4)
- static SPINAND_OP_VARIANTS(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),
- 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));
- static SPINAND_OP_VARIANTS(update_cache_variants,
- SPINAND_PROG_LOAD_X4(false, 0, NULL, 0),
- SPINAND_PROG_LOAD(false, 0, NULL, 0));
- static int xt26g0xa_ooblayout_ecc(struct mtd_info *mtd, int section,
- struct mtd_oob_region *region)
- {
- if (section)
- return -ERANGE;
- region->offset = 48;
- region->length = 16;
- return 0;
- }
- static int xt26g0xa_ooblayout_free(struct mtd_info *mtd, int section,
- struct mtd_oob_region *region)
- {
- if (section)
- return -ERANGE;
- region->offset = 1;
- region->length = 47;
- return 0;
- }
- static const struct mtd_ooblayout_ops xt26g0xa_ooblayout = {
- .ecc = xt26g0xa_ooblayout_ecc,
- .free = xt26g0xa_ooblayout_free,
- };
- static int xt26g0xa_ecc_get_status(struct spinand_device *spinand,
- u8 status)
- {
- status = status & XT26G0XA_STATUS_ECC_MASK;
- switch (status) {
- case XT26G0XA_STATUS_ECC_NO_DETECTED:
- return 0;
- case XT26G0XA_STATUS_ECC_8_CORRECTED:
- return 8;
- case XT26G0XA_STATUS_ECC_UNCOR_ERROR:
- return -EBADMSG;
- default:
- break;
- }
- /* At this point values greater than (2 << 4) are invalid */
- if (status > XT26G0XA_STATUS_ECC_UNCOR_ERROR)
- return -EINVAL;
- /* (1 << 2) through (7 << 2) are 1-7 corrected errors */
- return status >> 2;
- }
- static const struct spinand_info xtx_spinand_table[] = {
- SPINAND_INFO("XT26G01A",
- SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xE1),
- NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
- NAND_ECCREQ(8, 512),
- SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
- &write_cache_variants,
- &update_cache_variants),
- SPINAND_HAS_QE_BIT,
- SPINAND_ECCINFO(&xt26g0xa_ooblayout,
- xt26g0xa_ecc_get_status)),
- SPINAND_INFO("XT26G02A",
- SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xE2),
- NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 1, 1, 1),
- NAND_ECCREQ(8, 512),
- SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
- &write_cache_variants,
- &update_cache_variants),
- SPINAND_HAS_QE_BIT,
- SPINAND_ECCINFO(&xt26g0xa_ooblayout,
- xt26g0xa_ecc_get_status)),
- SPINAND_INFO("XT26G04A",
- SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xE3),
- NAND_MEMORG(1, 2048, 64, 128, 2048, 40, 1, 1, 1),
- NAND_ECCREQ(8, 512),
- SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
- &write_cache_variants,
- &update_cache_variants),
- SPINAND_HAS_QE_BIT,
- SPINAND_ECCINFO(&xt26g0xa_ooblayout,
- xt26g0xa_ecc_get_status)),
- };
- static const struct spinand_manufacturer_ops xtx_spinand_manuf_ops = {
- };
- const struct spinand_manufacturer xtx_spinand_manufacturer = {
- .id = SPINAND_MFR_XTX,
- .name = "XTX",
- .chips = xtx_spinand_table,
- .nchips = ARRAY_SIZE(xtx_spinand_table),
- .ops = &xtx_spinand_manuf_ops,
- };
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