92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Author: Ahmed Naseef <naseefkm@gmail.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_DOSILICON 0xE5
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static SPINAND_OP_VARIANTS(read_cache_variants,
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SPINAND_PAGE_READ_FROM_CACHE_1S_1S_4S_OP(0, 1, NULL, 0, 0),
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SPINAND_PAGE_READ_FROM_CACHE_1S_1S_2S_OP(0, 1, NULL, 0, 0),
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SPINAND_PAGE_READ_FROM_CACHE_FAST_1S_1S_1S_OP(0, 1, NULL, 0, 0),
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SPINAND_PAGE_READ_FROM_CACHE_1S_1S_1S_OP(0, 1, NULL, 0, 0));
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static SPINAND_OP_VARIANTS(write_cache_variants,
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SPINAND_PROG_LOAD_1S_1S_4S_OP(true, 0, NULL, 0),
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SPINAND_PROG_LOAD_1S_1S_1S_OP(true, 0, NULL, 0));
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static SPINAND_OP_VARIANTS(update_cache_variants,
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SPINAND_PROG_LOAD_1S_1S_4S_OP(false, 0, NULL, 0),
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SPINAND_PROG_LOAD_1S_1S_1S_OP(false, 0, NULL, 0));
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static int ds35xx_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 > 3)
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return -ERANGE;
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region->offset = 8 + (section * 16);
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region->length = 8;
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return 0;
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}
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static int ds35xx_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 > 3)
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return -ERANGE;
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if (section == 0) {
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/* reserve 2 bytes for the BBM */
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region->offset = 2;
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region->length = 6;
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} else {
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region->offset = section * 16;
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region->length = 8;
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}
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return 0;
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}
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static const struct mtd_ooblayout_ops ds35xx_ooblayout = {
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.ecc = ds35xx_ooblayout_ecc,
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.free = ds35xx_ooblayout_free,
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};
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static const struct spinand_info dosilicon_spinand_table[] = {
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SPINAND_INFO("DS35Q1GA",
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SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x71),
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NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
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NAND_ECCREQ(4, 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(&ds35xx_ooblayout, NULL)),
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SPINAND_INFO("DS35M1GA",
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SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x21),
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NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
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NAND_ECCREQ(4, 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(&ds35xx_ooblayout, NULL)),
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};
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static const struct spinand_manufacturer_ops dosilicon_spinand_manuf_ops = {
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};
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const struct spinand_manufacturer dosilicon_spinand_manufacturer = {
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.id = SPINAND_MFR_DOSILICON,
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.name = "Dosilicon",
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.chips = dosilicon_spinand_table,
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.nchips = ARRAY_SIZE(dosilicon_spinand_table),
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.ops = &dosilicon_spinand_manuf_ops,
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};
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