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mtd: spinand: add support for GigaDevice GD5FxGQ4xA

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Add support for GigaDevice GD5F1G/2G/4GQ4xA SPI NAND.

Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Chuanhong Guo 2018-11-28 21:07:25 +08:00 committed by Miquel Raynal
parent 7b6a9b28ec
commit c93c613214
4 changed files with 151 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 := core.o macronix.o micron.o toshiba.o winbond.o
spinand-objs := core.o gigadevice.o macronix.o micron.o toshiba.o winbond.o
obj-$(CONFIG_MTD_SPI_NAND) += spinand.o

1
drivers/mtd/nand/spi/core.c
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@ -764,6 +764,7 @@ static const struct nand_ops spinand_ops = {
};
static const struct spinand_manufacturer *spinand_manufacturers[] = {
&gigadevice_spinand_manufacturer,
&macronix_spinand_manufacturer,
&micron_spinand_manufacturer,
&toshiba_spinand_manufacturer,

148
drivers/mtd/nand/spi/gigadevice.c Normal file
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@ -0,0 +1,148 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Author:
* Chuanhong Guo <gch981213@gmail.com>
*/
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/mtd/spinand.h>
#define SPINAND_MFR_GIGADEVICE 0xC8
#define GD5FXGQ4XA_STATUS_ECC_1_7_BITFLIPS (1 << 4)
#define GD5FXGQ4XA_STATUS_ECC_8_BITFLIPS (3 << 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 gd5fxgq4xa_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 gd5fxgq4xa_ooblayout_free(struct mtd_info *mtd, int section,
struct mtd_oob_region *region)
{
if (section > 3)
return -ERANGE;
if (section) {
region->offset = 16 * section;
region->length = 8;
} else {
/* section 0 has one byte reserved for bad block mark */
region->offset = 1;
region->length = 7;
}
return 0;
}
static int gd5fxgq4xa_ecc_get_status(struct spinand_device *spinand,
u8 status)
{
switch (status & STATUS_ECC_MASK) {
case STATUS_ECC_NO_BITFLIPS:
return 0;
case GD5FXGQ4XA_STATUS_ECC_1_7_BITFLIPS:
/* 1-7 bits are flipped. return the maximum. */
return 7;
case GD5FXGQ4XA_STATUS_ECC_8_BITFLIPS:
return 8;
case STATUS_ECC_UNCOR_ERROR:
return -EBADMSG;
default:
break;
}
return -EINVAL;
}
static const struct mtd_ooblayout_ops gd5fxgq4xa_ooblayout = {
.ecc = gd5fxgq4xa_ooblayout_ecc,
.free = gd5fxgq4xa_ooblayout_free,
};
static const struct spinand_info gigadevice_spinand_table[] = {
SPINAND_INFO("GD5F1GQ4xA", 0xF1,
NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_variants,
&update_cache_variants),
0,
SPINAND_ECCINFO(&gd5fxgq4xa_ooblayout,
gd5fxgq4xa_ecc_get_status)),
SPINAND_INFO("GD5F2GQ4xA", 0xF2,
NAND_MEMORG(1, 2048, 64, 64, 2048, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_variants,
&update_cache_variants),
0,
SPINAND_ECCINFO(&gd5fxgq4xa_ooblayout,
gd5fxgq4xa_ecc_get_status)),
SPINAND_INFO("GD5F4GQ4xA", 0xF4,
NAND_MEMORG(1, 2048, 64, 64, 4096, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_variants,
&update_cache_variants),
0,
SPINAND_ECCINFO(&gd5fxgq4xa_ooblayout,
gd5fxgq4xa_ecc_get_status)),
};
static int gigadevice_spinand_detect(struct spinand_device *spinand)
{
u8 *id = spinand->id.data;
int ret;
/*
* For GD NANDs, There is an address byte needed to shift in before IDs
* are read out, so the first byte in raw_id is dummy.
*/
if (id[1] != SPINAND_MFR_GIGADEVICE)
return 0;
ret = spinand_match_and_init(spinand, gigadevice_spinand_table,
ARRAY_SIZE(gigadevice_spinand_table),
id[2]);
if (ret)
return ret;
return 1;
}
static const struct spinand_manufacturer_ops gigadevice_spinand_manuf_ops = {
.detect = gigadevice_spinand_detect,
};
const struct spinand_manufacturer gigadevice_spinand_manufacturer = {
.id = SPINAND_MFR_GIGADEVICE,
.name = "GigaDevice",
.ops = &gigadevice_spinand_manuf_ops,
};

1
include/linux/mtd/spinand.h
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@ -194,6 +194,7 @@ struct spinand_manufacturer {
};
/* SPI NAND manufacturers */
extern const struct spinand_manufacturer gigadevice_spinand_manufacturer;
extern const struct spinand_manufacturer macronix_spinand_manufacturer;
extern const struct spinand_manufacturer micron_spinand_manufacturer;
extern const struct spinand_manufacturer toshiba_spinand_manufacturer;