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0420872478
So far, the SPINAND_PAGE_READ_FROM_CACHE_OP macro was taking a first argument, "fast", which was inducing the possibility to support higher bus frequencies than with the normal (slower) read from cache alternative. In practice, without frequency change on the bus, this was likely without effect, besides perhaps allowing another variant of the same command, that could run at the default highest speed. If we want to support this fully, we need to add a frequency parameter to the slowest command. But before we do that, let's drop the "fast" boolean from the macro and duplicate it, this will further help supporting having different frequencies allowed for each variant. The change is also of course propagated to all users. It has the nice effect to have all macros aligned on the same pattern. Reviewed-by: Tudor Ambarus <tudor.ambarus@linaro.org> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
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_FAST_OP(0, 1, NULL, 0),
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SPINAND_PAGE_READ_FROM_CACHE_OP(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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