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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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d81ad9d78e
These macros had initially no frequency field. When I added the "maximum operation frequency" field, I did it initially on very common macros and I decided to add an optional field for that (with VA_ARGS) in order to prevent massively unreadable changes. I then added new variants in the spinand.h header, and requested a frequency field for them by default. Some times later, I also added maximum frequencies to other existing variants, but I did it incorrectly, without noticing I was wrong because the field was optional. This mix is error prone, so let's do what I should have done since the very beginning: add a frequency field to all READ_FROM_CACHE variants. There is no functional change. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
132 lines
3.4 KiB
C
132 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2019 Jeff Kletsky
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*
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* Author: Jeff Kletsky <git-commits@allycomm.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_PARAGON 0xa1
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#define PN26G0XA_STATUS_ECC_BITMASK (3 << 4)
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#define PN26G0XA_STATUS_ECC_NONE_DETECTED (0 << 4)
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#define PN26G0XA_STATUS_ECC_1_7_CORRECTED (1 << 4)
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#define PN26G0XA_STATUS_ECC_ERRORED (2 << 4)
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#define PN26G0XA_STATUS_ECC_8_CORRECTED (3 << 4)
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static SPINAND_OP_VARIANTS(read_cache_variants,
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SPINAND_PAGE_READ_FROM_CACHE_1S_4S_4S_OP(0, 2, NULL, 0, 0),
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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_2S_2S_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 pn26g0xa_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 = 6 + (15 * section); /* 4 BBM + 2 user bytes */
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region->length = 13;
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return 0;
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}
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static int pn26g0xa_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 > 4)
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return -ERANGE;
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if (section == 4) {
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region->offset = 64;
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region->length = 64;
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} else {
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region->offset = 4 + (15 * section);
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region->length = 2;
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}
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return 0;
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}
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static int pn26g0xa_ecc_get_status(struct spinand_device *spinand,
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u8 status)
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{
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switch (status & PN26G0XA_STATUS_ECC_BITMASK) {
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case PN26G0XA_STATUS_ECC_NONE_DETECTED:
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return 0;
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case PN26G0XA_STATUS_ECC_1_7_CORRECTED:
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return 7; /* Return upper limit by convention */
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case PN26G0XA_STATUS_ECC_8_CORRECTED:
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return 8;
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case PN26G0XA_STATUS_ECC_ERRORED:
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return -EBADMSG;
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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 mtd_ooblayout_ops pn26g0xa_ooblayout = {
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.ecc = pn26g0xa_ooblayout_ecc,
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.free = pn26g0xa_ooblayout_free,
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};
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static const struct spinand_info paragon_spinand_table[] = {
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SPINAND_INFO("PN26G01A",
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SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xe1),
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NAND_MEMORG(1, 2048, 128, 64, 1024, 21, 1, 1, 1),
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NAND_ECCREQ(8, 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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0,
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SPINAND_ECCINFO(&pn26g0xa_ooblayout,
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pn26g0xa_ecc_get_status)),
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SPINAND_INFO("PN26G02A",
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SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xe2),
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NAND_MEMORG(1, 2048, 128, 64, 2048, 41, 1, 1, 1),
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NAND_ECCREQ(8, 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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0,
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SPINAND_ECCINFO(&pn26g0xa_ooblayout,
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pn26g0xa_ecc_get_status)),
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};
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static const struct spinand_manufacturer_ops paragon_spinand_manuf_ops = {
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};
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const struct spinand_manufacturer paragon_spinand_manufacturer = {
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.id = SPINAND_MFR_PARAGON,
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.name = "Paragon",
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.chips = paragon_spinand_table,
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.nchips = ARRAY_SIZE(paragon_spinand_table),
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.ops = ¶gon_spinand_manuf_ops,
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};
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