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123 lines
4.1 KiB
Diff
123 lines
4.1 KiB
Diff
From 5f49a5c9b16330e0df8f639310e4715dcad71947 Mon Sep 17 00:00:00 2001
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From: Davide Fioravanti <pantanastyle@gmail.com>
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Date: Fri, 8 Jan 2021 15:35:24 +0100
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Subject: [PATCH] mtd: spinand: Add support for the Fidelix FM35X1GA
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Datasheet: http://www.hobos.com.cn/upload/datasheet/DS35X1GAXXX_100_rev00.pdf
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Signed-off-by: Davide Fioravanti <pantanastyle@gmail.com>
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---
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drivers/mtd/nand/spi/Makefile | 2 +-
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drivers/mtd/nand/spi/core.c | 1 +
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drivers/mtd/nand/spi/fidelix.c | 76 ++++++++++++++++++++++++++++++++++
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include/linux/mtd/spinand.h | 1 +
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4 files changed, 79 insertions(+), 1 deletion(-)
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create mode 100644 drivers/mtd/nand/spi/fidelix.c
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--- a/drivers/mtd/nand/spi/Makefile
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+++ b/drivers/mtd/nand/spi/Makefile
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@@ -1,3 +1,3 @@
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# SPDX-License-Identifier: GPL-2.0
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-spinand-objs := core.o esmt.o etron.o gigadevice.o macronix.o micron.o paragon.o toshiba.o winbond.o xtx.o
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+spinand-objs := core.o esmt.o etron.o fidelix.o gigadevice.o macronix.o micron.o paragon.o toshiba.o winbond.o xtx.o
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obj-$(CONFIG_MTD_SPI_NAND) += spinand.o
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--- a/drivers/mtd/nand/spi/core.c
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+++ b/drivers/mtd/nand/spi/core.c
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@@ -929,6 +929,7 @@ static const struct nand_ops spinand_ops
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static const struct spinand_manufacturer *spinand_manufacturers[] = {
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&esmt_c8_spinand_manufacturer,
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+ &fidelix_spinand_manufacturer,
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&gigadevice_spinand_manufacturer,
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&etron_spinand_manufacturer,
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¯onix_spinand_manufacturer,
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--- /dev/null
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+++ b/drivers/mtd/nand/spi/fidelix.c
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@@ -0,0 +1,76 @@
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+// SPDX-License-Identifier: GPL-2.0
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+/*
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+ * Copyright (c) 2020 Davide Fioravanti <pantanastyle@gmail.com>
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+ */
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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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+
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+#define SPINAND_MFR_FIDELIX 0xE5
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+#define FIDELIX_ECCSR_MASK 0x0F
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+
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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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+
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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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+
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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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+
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+static int fm35x1ga_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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+
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+ region->offset = (16 * section) + 8;
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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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+
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+static int fm35x1ga_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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+
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+ region->offset = (16 * section) + 2;
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+ region->length = 6;
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+
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+ return 0;
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+}
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+
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+static const struct mtd_ooblayout_ops fm35x1ga_ooblayout = {
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+ .ecc = fm35x1ga_ooblayout_ecc,
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+ .free = fm35x1ga_ooblayout_free,
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+};
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+
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+static const struct spinand_info fidelix_spinand_table[] = {
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+ SPINAND_INFO("FM35X1GA",
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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(&fm35x1ga_ooblayout, NULL)),
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+};
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+
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+static const struct spinand_manufacturer_ops fidelix_spinand_manuf_ops = {
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+};
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+
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+const struct spinand_manufacturer fidelix_spinand_manufacturer = {
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+ .id = SPINAND_MFR_FIDELIX,
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+ .name = "Fidelix",
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+ .chips = fidelix_spinand_table,
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+ .nchips = ARRAY_SIZE(fidelix_spinand_table),
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+ .ops = &fidelix_spinand_manuf_ops,
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+};
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--- a/include/linux/mtd/spinand.h
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+++ b/include/linux/mtd/spinand.h
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@@ -262,6 +262,7 @@ struct spinand_manufacturer {
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/* SPI NAND manufacturers */
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extern const struct spinand_manufacturer esmt_c8_spinand_manufacturer;
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extern const struct spinand_manufacturer etron_spinand_manufacturer;
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+extern const struct spinand_manufacturer fidelix_spinand_manufacturer;
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extern const struct spinand_manufacturer gigadevice_spinand_manufacturer;
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extern const struct spinand_manufacturer macronix_spinand_manufacturer;
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extern const struct spinand_manufacturer micron_spinand_manufacturer;
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