127 lines
3.2 KiB
C
127 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2022-2025 ArtInChip
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*
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* Authors:
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* keliang.liu <keliang.liu@artinchip.com>
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*/
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#include <linux/device.h>
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#include <linux/kernel.h>
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#include <linux/mtd/spinand.h>
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#define SPINAND_MFR_FMSH 0xA1
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static SPINAND_OP_VARIANTS(read_cache_variants,
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SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 1, NULL, 0),
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SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
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SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0),
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SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),
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SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0),
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SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));
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static SPINAND_OP_VARIANTS(write_cache_variants,
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SPINAND_PROG_LOAD_X4(true, 0, NULL, 0),
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SPINAND_PROG_LOAD(true, 0, NULL, 0));
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static SPINAND_OP_VARIANTS(update_cache_variants,
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SPINAND_PROG_LOAD_X4(false, 0, NULL, 0),
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SPINAND_PROG_LOAD(false, 0, NULL, 0));
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static int fm25s01a_ooblayout_ecc(struct mtd_info *mtd, int section,
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struct mtd_oob_region *region)
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{
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if (section)
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return -ERANGE;
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region->offset = mtd->oobsize;
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region->length = 0;
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return 0;
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}
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static int fm25s01a_ooblayout_free(struct mtd_info *mtd, int section,
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struct mtd_oob_region *region)
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{
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if (section)
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return -ERANGE;
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region->offset = 2;
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region->length = mtd->oobsize - 2;
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return 0;
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}
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static const struct mtd_ooblayout_ops fm25s01a_ooblayout = {
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.ecc = fm25s01a_ooblayout_ecc,
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.free = fm25s01a_ooblayout_free,
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};
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static int fm25s01_ecc_get_status(struct spinand_device *spinand,
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u8 status)
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{
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switch (status & STATUS_ECC_MASK) {
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case STATUS_ECC_NO_BITFLIPS:
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return 0;
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case STATUS_ECC_UNCOR_ERROR:
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return -EBADMSG;
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case STATUS_ECC_HAS_BITFLIPS:
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return ((status & STATUS_ECC_MASK) >> 4);
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default:
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break;
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}
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return -EINVAL;
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}
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static const struct spinand_info fmsh_spinand_table[] = {
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SPINAND_INFO("FM25S01",
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SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xA1),
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NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
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NAND_ECCREQ(1, 512),
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SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
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&write_cache_variants,
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&update_cache_variants),
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SPINAND_HAS_QE_BIT,
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SPINAND_ECCINFO(&fm25s01a_ooblayout,
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fm25s01_ecc_get_status)),
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SPINAND_INFO("FM25S01A",
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SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE4),
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NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
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NAND_ECCREQ(1, 512),
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SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
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&write_cache_variants,
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&update_cache_variants),
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SPINAND_HAS_QE_BIT,
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SPINAND_ECCINFO(&fm25s01a_ooblayout,
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fm25s01_ecc_get_status)),
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};
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static int fmsh_spinand_init(struct spinand_device *spinand)
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{
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pr_info("FudanMicro %s \n", __func__);
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return 0;
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}
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static void fmsh_spinand_cleanup(struct spinand_device *spinand)
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{
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pr_info("FudanMicro %s \n", __func__);
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}
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static const struct spinand_manufacturer_ops fmsh_spinand_manuf_ops = {
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.init = fmsh_spinand_init,
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.cleanup = fmsh_spinand_cleanup
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};
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const struct spinand_manufacturer fmsh_spinand_manufacturer = {
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.id = SPINAND_MFR_FMSH,
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.name = "FudanMicro",
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.chips = fmsh_spinand_table,
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.nchips = ARRAY_SIZE(fmsh_spinand_table),
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.ops = &fmsh_spinand_manuf_ops,
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};
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