87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2022 Aidan MacDonald
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*
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* Author: Aidan MacDonald <aidanmacdonald.0x0@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_ATO 0x9b
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static SPINAND_OP_VARIANTS(read_cache_variants,
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SPINAND_PAGE_READ_FROM_CACHE_X4_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 ato25d1ga_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 = (16 * section) + 8;
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region->length = 8;
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return 0;
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}
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static int ato25d1ga_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) {
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region->offset = (16 * section);
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region->length = 8;
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} else {
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/* first byte of section 0 is reserved for the BBM */
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region->offset = 1;
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region->length = 7;
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}
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return 0;
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}
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static const struct mtd_ooblayout_ops ato25d1ga_ooblayout = {
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.ecc = ato25d1ga_ooblayout_ecc,
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.free = ato25d1ga_ooblayout_free,
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};
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static const struct spinand_info ato_spinand_table[] = {
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SPINAND_INFO("ATO25D1GA",
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SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x12),
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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(&ato25d1ga_ooblayout, NULL)),
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};
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static const struct spinand_manufacturer_ops ato_spinand_manuf_ops = {
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};
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const struct spinand_manufacturer ato_spinand_manufacturer = {
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.id = SPINAND_MFR_ATO,
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.name = "ATO",
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.chips = ato_spinand_table,
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.nchips = ARRAY_SIZE(ato_spinand_table),
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.ops = &ato_spinand_manuf_ops,
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};
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