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mtd: spinand: Support esmt

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F50L1G41LB

Change-Id: I4a42522d775b511e9c049b5481ebc35e00821f95
Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
This commit is contained in:
Jon Lin
2021-10-17 09:55:51 +08:00
committed by Tao Huang
parent cead43cc57
commit 560380d22f
4 changed files with 84 additions and 1 deletions
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2
drivers/mtd/nand/spi/Makefile
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@@ -1,3 +1,3 @@
# SPDX-License-Identifier: GPL-2.0
spinand-objs := biwin.o core.o dosilicon.o gigadevice.o macronix.o micron.o paragon.o toshiba.o winbond.o
spinand-objs := biwin.o core.o dosilicon.o esmt.o gigadevice.o macronix.o micron.o paragon.o toshiba.o winbond.o
obj-$(CONFIG_MTD_SPI_NAND) += spinand.o

1
drivers/mtd/nand/spi/core.c
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@@ -851,6 +851,7 @@ static const struct nand_ops spinand_ops = {
static const struct spinand_manufacturer *spinand_manufacturers[] = {
&biwin_spinand_manufacturer,
&dosilicon_spinand_manufacturer,
&esmt_spinand_manufacturer,
&gigadevice_spinand_manufacturer,
&macronix_spinand_manufacturer,
&micron_spinand_manufacturer,

81
drivers/mtd/nand/spi/esmt.c Normal file
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@@ -0,0 +1,81 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2020 Grandstream Networks, Inc
*
* Authors:
* Carl <xjxia@grandstream.cn>
*/
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/mtd/spinand.h>
#define SPINAND_MFR_ESMT 0xC8
static SPINAND_OP_VARIANTS(read_cache_variants,
SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0),
SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0),
SPINAND_PAGE_READ_FROM_CACHE_X2_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 f50lxx41x_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 f50lxx41x_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 f50lxx41x_ooblayout = {
.ecc = f50lxx41x_ooblayout_ecc,
.free = f50lxx41x_ooblayout_free,
};
static const struct spinand_info esmt_spinand_table[] = {
SPINAND_INFO("F50L1G41LB",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x01),
NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
NAND_ECCREQ(1, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_variants,
&update_cache_variants),
0,
SPINAND_ECCINFO(&f50lxx41x_ooblayout, NULL)),
};
static const struct spinand_manufacturer_ops esmt_spinand_manuf_ops = {
};
const struct spinand_manufacturer esmt_spinand_manufacturer = {
.id = SPINAND_MFR_ESMT,
.name = "esmt",
.chips = esmt_spinand_table,
.nchips = ARRAY_SIZE(esmt_spinand_table),
.ops = &esmt_spinand_manuf_ops,
};

1
include/linux/mtd/spinand.h
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@@ -240,6 +240,7 @@ struct spinand_manufacturer {
/* SPI NAND manufacturers */
extern const struct spinand_manufacturer biwin_spinand_manufacturer;
extern const struct spinand_manufacturer dosilicon_spinand_manufacturer;
extern const struct spinand_manufacturer esmt_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;