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| // SPDX-License-Identifier: GPL-2.0
| /*
| * Copyright (c) 2020-2021 Rockchip Electronics Co., Ltd
| *
| * Authors:
| * Dingqiang Lin <jon.lin@rock-chips.com>
| */
|
| #include <linux/device.h>
| #include <linux/kernel.h>
| #include <linux/mtd/spinand.h>
|
| #define SPINAND_MFR_FMSH 0xA1
|
| static SPINAND_OP_VARIANTS(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));
|
| static SPINAND_OP_VARIANTS(update_cache_variants,
| SPINAND_PROG_LOAD_X4(false, 0, NULL, 0),
| SPINAND_PROG_LOAD(false, 0, NULL, 0));
|
| static int fm25s01a_ooblayout_ecc(struct mtd_info *mtd, int section,
| struct mtd_oob_region *region)
| {
| return -ERANGE;
| }
|
| static int fm25s01a_ooblayout_free(struct mtd_info *mtd, int section,
| struct mtd_oob_region *region)
| {
| if (section)
| return -ERANGE;
|
| region->offset = 2;
| region->length = 62;
|
| return 0;
| }
|
| static const struct mtd_ooblayout_ops fm25s01a_ooblayout = {
| .ecc = fm25s01a_ooblayout_ecc,
| .free = fm25s01a_ooblayout_free,
| };
|
| static int fm25s01_ooblayout_ecc(struct mtd_info *mtd, int section,
| struct mtd_oob_region *region)
| {
| if (section)
| return -ERANGE;
|
| region->offset = 64;
| region->length = 64;
|
| return 0;
| }
|
| static int fm25s01_ooblayout_free(struct mtd_info *mtd, int section,
| struct mtd_oob_region *region)
| {
| if (section)
| return -ERANGE;
|
| region->offset = 2;
| region->length = 62;
|
| return 0;
| }
|
| static const struct mtd_ooblayout_ops fm25s01_ooblayout = {
| .ecc = fm25s01_ooblayout_ecc,
| .free = fm25s01_ooblayout_free,
| };
|
| /*
| * ecc bits: 0xC0[4,6]
| * [0b000], No bit errors were detected;
| * [0b001] and [0b011], 1~6 Bit errors were detected and corrected. Not
| * reach Flipping Bits;
| * [0b101], Bit error count equals the bit flip
| * detection threshold
| * [0b010], Multiple bit errors were detected and
| * not corrected.
| * others, Reserved.
| */
| static int fm25s01bi3_ecc_ecc_get_status(struct spinand_device *spinand,
| u8 status)
| {
| struct nand_device *nand = spinand_to_nand(spinand);
| u8 eccsr = (status & GENMASK(6, 4)) >> 4;
|
| if (eccsr <= 1 || eccsr == 3)
| return eccsr;
| else if (eccsr == 5)
| return nanddev_get_ecc_requirements(nand)->strength;
| else
| return -EBADMSG;
| }
|
| static const struct spinand_info fmsh_spinand_table[] = {
| SPINAND_INFO("FM25S01A",
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE4),
| NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
| NAND_ECCREQ(1, 512),
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
| &write_cache_variants,
| &update_cache_variants),
| 0,
| SPINAND_ECCINFO(&fm25s01a_ooblayout, NULL)),
| SPINAND_INFO("FM25S02A",
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE5),
| NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 2, 1, 1),
| NAND_ECCREQ(1, 512),
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
| &write_cache_variants,
| &update_cache_variants),
| SPINAND_HAS_QE_BIT,
| SPINAND_ECCINFO(&fm25s01a_ooblayout, NULL)),
| SPINAND_INFO("FM25S01",
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xA1),
| NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
| NAND_ECCREQ(1, 512),
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
| &write_cache_variants,
| &update_cache_variants),
| 0,
| SPINAND_ECCINFO(&fm25s01_ooblayout, NULL)),
| SPINAND_INFO("FM25LS01",
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xA5),
| NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
| NAND_ECCREQ(1, 512),
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
| &write_cache_variants,
| &update_cache_variants),
| 0,
| SPINAND_ECCINFO(&fm25s01_ooblayout, NULL)),
| SPINAND_INFO("FM25S01BI3",
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xD4),
| NAND_MEMORG(1, 2048, 128, 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(&fm25s01_ooblayout, fm25s01bi3_ecc_ecc_get_status)),
| };
|
| static const struct spinand_manufacturer_ops fmsh_spinand_manuf_ops = {
| };
|
| const struct spinand_manufacturer fmsh_spinand_manufacturer = {
| .id = SPINAND_MFR_FMSH,
| .name = "FMSH",
| .chips = fmsh_spinand_table,
| .nchips = ARRAY_SIZE(fmsh_spinand_table),
| .ops = &fmsh_spinand_manuf_ops,
| };
|
|
