Index: a/drivers/mtd/nand/spi/Makefile =================================================================== --- a/drivers/mtd/nand/spi/Makefile +++ b/drivers/mtd/nand/spi/Makefile @@ -1,3 +1,3 @@ # SPDX-License-Identifier: GPL-2.0 -spinand-objs := core.o gigadevice.o macronix.o micron.o paragon.o toshiba.o winbond.o +spinand-objs := core.o gigadevice.o macronix.o micron.o paragon.o toshiba.o winbond.o etron.o obj-$(CONFIG_MTD_SPI_NAND) += spinand.o Index: a/drivers/mtd/nand/spi/core.c =================================================================== --- a/drivers/mtd/nand/spi/core.c +++ b/drivers/mtd/nand/spi/core.c @@ -754,6 +754,7 @@ static const struct nand_ops spinand_ops }; static const struct spinand_manufacturer *spinand_manufacturers[] = { + &etron_spinand_manufacturer, &gigadevice_spinand_manufacturer, ¯onix_spinand_manufacturer, µn_spinand_manufacturer, Index: a/drivers/mtd/nand/spi/etron.c =================================================================== --- /dev/null +++ b/drivers/mtd/nand/spi/etron.c @@ -0,0 +1,180 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2020 Etron Technology, Inc. + * + */ + +#include +#include +#include + +#define SPINAND_MFR_ETRON 0xD5 + +#define STATUS_ECC_LIMIT_BITFLIPS (3 << 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 etron_ooblayout_ecc(struct mtd_info *mtd, int section, + struct mtd_oob_region *region) +{ + if (section > 3) + return -ERANGE; + + region->offset = (14 * section) + 72; + region->length = 14; + + return 0; +} + +static int etron_ooblayout_free(struct mtd_info *mtd, int section, + struct mtd_oob_region *region) +{ + if (section > 3) + return -ERANGE; + + if (section) { + region->offset = 18 * section; + region->length = 18; + } else { + /* section 0 has one byte reserved for bad block mark */ + region->offset = 2; + region->length = 16; + } + + return 0; +} + +static const struct mtd_ooblayout_ops etron_ooblayout = { + .ecc = etron_ooblayout_ecc, + .free = etron_ooblayout_free, +}; + +static int etron_ecc_get_status(struct spinand_device *spinand, + u8 status) +{ + struct nand_device *nand = spinand_to_nand(spinand); + + switch (status & STATUS_ECC_MASK) { + case STATUS_ECC_NO_BITFLIPS: + return 0; + + case STATUS_ECC_UNCOR_ERROR: + return -EBADMSG; + + case STATUS_ECC_HAS_BITFLIPS: + return nand->eccreq.strength >> 1; + + case STATUS_ECC_LIMIT_BITFLIPS: + return nand->eccreq.strength; + + default: + break; + } + + return -EINVAL; +} + +static const struct spinand_info etron_spinand_table[] = { + /* EM73C 1Gb 3.3V */ + SPINAND_INFO("EM73C044VCF", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x25), + NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1), + NAND_ECCREQ(4, 512), + SPINAND_INFO_OP_VARIANTS(&read_cache_variants, + &write_cache_variants, + &update_cache_variants), + SPINAND_HAS_QE_BIT, + SPINAND_ECCINFO(&etron_ooblayout, etron_ecc_get_status)), + /* EM7xD 2Gb */ + SPINAND_INFO("EM73D044VCR", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x41), + NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 1, 1, 1), + NAND_ECCREQ(4, 512), + SPINAND_INFO_OP_VARIANTS(&read_cache_variants, + &write_cache_variants, + &update_cache_variants), + SPINAND_HAS_QE_BIT, + SPINAND_ECCINFO(&etron_ooblayout, etron_ecc_get_status)), + SPINAND_INFO("EM73D044VCO", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x3A), + NAND_MEMORG(1, 2048, 128, 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(&etron_ooblayout, etron_ecc_get_status)), + SPINAND_INFO("EM78D044VCM", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x8E), + NAND_MEMORG(1, 2048, 128, 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(&etron_ooblayout, etron_ecc_get_status)), + /* EM7xE 4Gb */ + SPINAND_INFO("EM73E044VCE", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x3B), + NAND_MEMORG(1, 2048, 128, 64, 4096, 80, 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(&etron_ooblayout, etron_ecc_get_status)), + SPINAND_INFO("EM78E044VCD", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x8F), + NAND_MEMORG(1, 2048, 128, 64, 4096, 80, 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(&etron_ooblayout, etron_ecc_get_status)), + /* EM7xF044VCA 8Gb */ + SPINAND_INFO("EM73F044VCA", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x15), + NAND_MEMORG(1, 4096, 256, 64, 4096, 80, 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(&etron_ooblayout, etron_ecc_get_status)), + SPINAND_INFO("EM78F044VCA", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x8D), + NAND_MEMORG(1, 4096, 256, 64, 4096, 80, 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(&etron_ooblayout, etron_ecc_get_status)), +}; + +static const struct spinand_manufacturer_ops etron_spinand_manuf_ops = { +}; + +const struct spinand_manufacturer etron_spinand_manufacturer = { + .id = SPINAND_MFR_ETRON, + .name = "Etron", + .chips = etron_spinand_table, + .nchips = ARRAY_SIZE(etron_spinand_table), + .ops = &etron_spinand_manuf_ops, +}; + Index: a/include/linux/mtd/spinand.h =================================================================== --- a/include/linux/mtd/spinand.h +++ b/include/linux/mtd/spinand.h @@ -238,6 +238,7 @@ struct spinand_manufacturer { }; /* SPI NAND manufacturers */ +extern const struct spinand_manufacturer etron_spinand_manufacturer; extern const struct spinand_manufacturer gigadevice_spinand_manufacturer; extern const struct spinand_manufacturer macronix_spinand_manufacturer; extern const struct spinand_manufacturer micron_spinand_manufacturer;