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mediatek: restore support for Fidelix FM35X1GA
This patch was dropped when the spi-nand driver got replaced last time. Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
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...et/linux/mediatek/patches-5.15/340-mtd-spinand-Add-support-for-the-Fidelix-FM35X1GA.patch
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| From 5f49a5c9b16330e0df8f639310e4715dcad71947 Mon Sep 17 00:00:00 2001 | ||
| From: Davide Fioravanti <pantanastyle@gmail.com> | ||
| Date: Fri, 8 Jan 2021 15:35:24 +0100 | ||
| Subject: [PATCH] mtd: spinand: Add support for the Fidelix FM35X1GA | ||
|
|
||
| Datasheet: http://www.hobos.com.cn/upload/datasheet/DS35X1GAXXX_100_rev00.pdf | ||
|
|
||
| Signed-off-by: Davide Fioravanti <pantanastyle@gmail.com> | ||
| --- | ||
| drivers/mtd/nand/spi/Makefile | 2 +- | ||
| drivers/mtd/nand/spi/core.c | 1 + | ||
| drivers/mtd/nand/spi/fidelix.c | 76 ++++++++++++++++++++++++++++++++++ | ||
| include/linux/mtd/spinand.h | 1 + | ||
| 4 files changed, 79 insertions(+), 1 deletion(-) | ||
| create mode 100644 drivers/mtd/nand/spi/fidelix.c | ||
|
|
||
| --- a/drivers/mtd/nand/spi/Makefile | ||
| +++ b/drivers/mtd/nand/spi/Makefile | ||
| @@ -1,3 +1,3 @@ | ||
| # SPDX-License-Identifier: GPL-2.0 | ||
| -spinand-objs := core.o esmt.o gigadevice.o macronix.o micron.o paragon.o toshiba.o winbond.o xtx.o | ||
| +spinand-objs := core.o esmt.o fidelix.o gigadevice.o macronix.o micron.o paragon.o toshiba.o winbond.o xtx.o | ||
| obj-$(CONFIG_MTD_SPI_NAND) += spinand.o | ||
| --- a/drivers/mtd/nand/spi/core.c | ||
| +++ b/drivers/mtd/nand/spi/core.c | ||
| @@ -929,6 +929,7 @@ static const struct nand_ops spinand_ops | ||
|
|
||
| static const struct spinand_manufacturer *spinand_manufacturers[] = { | ||
| &esmt_c8_spinand_manufacturer, | ||
| + &fidelix_spinand_manufacturer, | ||
| &gigadevice_spinand_manufacturer, | ||
| ¯onix_spinand_manufacturer, | ||
| µn_spinand_manufacturer, | ||
| --- /dev/null | ||
| +++ b/drivers/mtd/nand/spi/fidelix.c | ||
| @@ -0,0 +1,76 @@ | ||
| +// SPDX-License-Identifier: GPL-2.0 | ||
| +/* | ||
| + * Copyright (c) 2020 Davide Fioravanti <pantanastyle@gmail.com> | ||
| + */ | ||
| + | ||
| +#include <linux/device.h> | ||
| +#include <linux/kernel.h> | ||
| +#include <linux/mtd/spinand.h> | ||
| + | ||
| +#define SPINAND_MFR_FIDELIX 0xE5 | ||
| +#define FIDELIX_ECCSR_MASK 0x0F | ||
| + | ||
| +static SPINAND_OP_VARIANTS(read_cache_variants, | ||
| + SPINAND_PAGE_READ_FROM_CACHE_X4_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 fm35x1ga_ooblayout_ecc(struct mtd_info *mtd, int section, | ||
| + struct mtd_oob_region *region) | ||
| +{ | ||
| + if (section > 3) | ||
| + return -ERANGE; | ||
| + | ||
| + region->offset = (16 * section) + 8; | ||
| + region->length = 8; | ||
| + | ||
| + return 0; | ||
| +} | ||
| + | ||
| +static int fm35x1ga_ooblayout_free(struct mtd_info *mtd, int section, | ||
| + struct mtd_oob_region *region) | ||
| +{ | ||
| + if (section > 3) | ||
| + return -ERANGE; | ||
| + | ||
| + region->offset = (16 * section) + 2; | ||
| + region->length = 6; | ||
| + | ||
| + return 0; | ||
| +} | ||
| + | ||
| +static const struct mtd_ooblayout_ops fm35x1ga_ooblayout = { | ||
| + .ecc = fm35x1ga_ooblayout_ecc, | ||
| + .free = fm35x1ga_ooblayout_free, | ||
| +}; | ||
| + | ||
| +static const struct spinand_info fidelix_spinand_table[] = { | ||
| + SPINAND_INFO("FM35X1GA", | ||
| + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x71), | ||
| + NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1), | ||
| + NAND_ECCREQ(4, 512), | ||
| + SPINAND_INFO_OP_VARIANTS(&read_cache_variants, | ||
| + &write_cache_variants, | ||
| + &update_cache_variants), | ||
| + SPINAND_HAS_QE_BIT, | ||
| + SPINAND_ECCINFO(&fm35x1ga_ooblayout, NULL)), | ||
| +}; | ||
| + | ||
| +static const struct spinand_manufacturer_ops fidelix_spinand_manuf_ops = { | ||
| +}; | ||
| + | ||
| +const struct spinand_manufacturer fidelix_spinand_manufacturer = { | ||
| + .id = SPINAND_MFR_FIDELIX, | ||
| + .name = "Fidelix", | ||
| + .chips = fidelix_spinand_table, | ||
| + .nchips = ARRAY_SIZE(fidelix_spinand_table), | ||
| + .ops = &fidelix_spinand_manuf_ops, | ||
| +}; | ||
| --- a/include/linux/mtd/spinand.h | ||
| +++ b/include/linux/mtd/spinand.h | ||
| @@ -261,6 +261,7 @@ struct spinand_manufacturer { | ||
|
|
||
| /* SPI NAND manufacturers */ | ||
| extern const struct spinand_manufacturer esmt_c8_spinand_manufacturer; | ||
| +extern const struct spinand_manufacturer fidelix_spinand_manufacturer; | ||
| extern const struct spinand_manufacturer gigadevice_spinand_manufacturer; | ||
| extern const struct spinand_manufacturer macronix_spinand_manufacturer; | ||
| extern const struct spinand_manufacturer micron_spinand_manufacturer; |