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mtd: spinand: Support dosilicon

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DS35X1GA, DS35Q2GA, DS35M1GA, DS35M2GA, DS35Q2GB, DS35M1GB

Change-Id: I5aeb0219f01dbe98d36b398e66b94ab31b07788e
Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
This commit is contained in:
Jon Lin
2021-10-17 09:51:39 +08:00
committed by Tao Huang
parent 1f221f71d8
commit cead43cc57
4 changed files with 190 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 gigadevice.o macronix.o micron.o paragon.o toshiba.o winbond.o
spinand-objs := biwin.o core.o dosilicon.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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@@ -850,6 +850,7 @@ static const struct nand_ops spinand_ops = {
static const struct spinand_manufacturer *spinand_manufacturers[] = {
&biwin_spinand_manufacturer,
&dosilicon_spinand_manufacturer,
&gigadevice_spinand_manufacturer,
&macronix_spinand_manufacturer,
&micron_spinand_manufacturer,

187
drivers/mtd/nand/spi/dosilicon.c Normal file
View File

@@ -0,0 +1,187 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2020 Rockchip Electronics Co., Ltd
*/
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/mtd/spinand.h>
#define SPINAND_MFR_DOSILICON 0xE5
#define DOSICON_STATUS_ECC_MASK GENMASK(7, 4)
#define DOSICON_STATUS_ECC_NO_BITFLIPS (0 << 4)
#define DOSICON_STATUS_ECC_1TO3_BITFLIPS (1 << 4)
#define DOSICON_STATUS_ECC_4TO6_BITFLIPS (3 << 4)
#define DOSICON_STATUS_ECC_7TO8_BITFLIPS (5 << 4)
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 ds35xxga_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 ds35xxga_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 ds35xxga_ooblayout = {
.ecc = ds35xxga_ooblayout_ecc,
.free = ds35xxga_ooblayout_free,
};
static int ds35xxgb_ooblayout_ecc(struct mtd_info *mtd, int section,
struct mtd_oob_region *region)
{
if (section)
return -ERANGE;
region->offset = 64;
region->length = 64;
return 0;
}
static int ds35xxgb_ooblayout_free(struct mtd_info *mtd, int section,
struct mtd_oob_region *region)
{
if (section)
return -ERANGE;
/* Reserve 1 bytes for the BBM. */
region->offset = 1;
region->length = 63;
return 0;
}
static const struct mtd_ooblayout_ops ds35xxgb_ooblayout = {
.ecc = ds35xxgb_ooblayout_ecc,
.free = ds35xxgb_ooblayout_free,
};
static int ds35xxgb_ecc_get_status(struct spinand_device *spinand,
u8 status)
{
switch (status & DOSICON_STATUS_ECC_MASK) {
case STATUS_ECC_NO_BITFLIPS:
return 0;
case STATUS_ECC_UNCOR_ERROR:
return -EBADMSG;
case DOSICON_STATUS_ECC_1TO3_BITFLIPS:
return 3;
case DOSICON_STATUS_ECC_4TO6_BITFLIPS:
return 6;
case DOSICON_STATUS_ECC_7TO8_BITFLIPS:
return 8;
default:
break;
}
return -EINVAL;
}
static const struct spinand_info dosilicon_spinand_table[] = {
SPINAND_INFO("DS35X1GA",
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(&ds35xxga_ooblayout, NULL)),
SPINAND_INFO("DS35Q2GA",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x72),
NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 2, 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(&ds35xxga_ooblayout, NULL)),
SPINAND_INFO("DS35M1GA",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x21),
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(&ds35xxga_ooblayout, NULL)),
SPINAND_INFO("DS35M2GA",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x22),
NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 2, 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(&ds35xxga_ooblayout, NULL)),
SPINAND_INFO("DS35Q2GB",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xF2),
NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 2, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_variants,
&update_cache_variants),
SPINAND_HAS_QE_BIT,
SPINAND_ECCINFO(&ds35xxgb_ooblayout,
ds35xxgb_ecc_get_status)),
SPINAND_INFO("DS35M1GB",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xA1),
NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 2, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_variants,
&update_cache_variants),
SPINAND_HAS_QE_BIT,
SPINAND_ECCINFO(&ds35xxgb_ooblayout,
ds35xxgb_ecc_get_status)),
};
static const struct spinand_manufacturer_ops dosilicon_spinand_manuf_ops = {
};
const struct spinand_manufacturer dosilicon_spinand_manufacturer = {
.id = SPINAND_MFR_DOSILICON,
.name = "dosilicon",
.chips = dosilicon_spinand_table,
.nchips = ARRAY_SIZE(dosilicon_spinand_table),
.ops = &dosilicon_spinand_manuf_ops,
};

1
include/linux/mtd/spinand.h
View File

@@ -239,6 +239,7 @@ 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 gigadevice_spinand_manufacturer;
extern const struct spinand_manufacturer macronix_spinand_manufacturer;
extern const struct spinand_manufacturer micron_spinand_manufacturer;