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mtd: spinand: add support for FORESEE F35SQA002G

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Add support for FORESEE F35SQA002G SPI NAND.
Datasheet:
  https://www.longsys.com/uploads/LM-00006FORESEEF35SQA002GDatasheet_1650183701.pdf

Signed-off-by: Martin Kurbanov <mmkurbanov@salutedevices.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20231002140458.147605-1-mmkurbanov@salutedevices.com
This commit is contained in:
Martin Kurbanov 2023-10-02 17:04:58 +03:00 committed by Miquel Raynal
parent 1cfa2f76af
commit f447318fb1
4 changed files with 98 additions and 1 deletions
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2
drivers/mtd/nand/spi/Makefile
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@ -1,4 +1,4 @@
# SPDX-License-Identifier: GPL-2.0
spinand-objs := core.o alliancememory.o ato.o esmt.o gigadevice.o macronix.o
spinand-objs := core.o alliancememory.o ato.o esmt.o foresee.o gigadevice.o macronix.o
spinand-objs += micron.o paragon.o toshiba.o winbond.o xtx.o
obj-$(CONFIG_MTD_SPI_NAND) += spinand.o

1
drivers/mtd/nand/spi/core.c
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@ -940,6 +940,7 @@ static const struct spinand_manufacturer *spinand_manufacturers[] = {
&alliancememory_spinand_manufacturer,
&ato_spinand_manufacturer,
&esmt_c8_spinand_manufacturer,
&foresee_spinand_manufacturer,
&gigadevice_spinand_manufacturer,
&macronix_spinand_manufacturer,
&micron_spinand_manufacturer,

95
drivers/mtd/nand/spi/foresee.c Normal file
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@ -0,0 +1,95 @@
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (c) 2023, SberDevices. All Rights Reserved.
*
* Author: Martin Kurbanov <mmkurbanov@salutedevices.com>
*/
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/mtd/spinand.h>
#define SPINAND_MFR_FORESEE 0xCD
static SPINAND_OP_VARIANTS(read_cache_variants,
SPINAND_PAGE_READ_FROM_CACHE_X4_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 f35sqa002g_ooblayout_ecc(struct mtd_info *mtd, int section,
struct mtd_oob_region *region)
{
return -ERANGE;
}
static int f35sqa002g_ooblayout_free(struct mtd_info *mtd, int section,
struct mtd_oob_region *region)
{
if (section)
return -ERANGE;
/* Reserve 2 bytes for the BBM. */
region->offset = 2;
region->length = 62;
return 0;
}
static const struct mtd_ooblayout_ops f35sqa002g_ooblayout = {
.ecc = f35sqa002g_ooblayout_ecc,
.free = f35sqa002g_ooblayout_free,
};
static int f35sqa002g_ecc_get_status(struct spinand_device *spinand, u8 status)
{
struct nand_device *nand = spinand_to_nand(spinand);
switch (status & STATUS_ECC_MASK) {
case STATUS_ECC_NO_BITFLIPS:
return 0;
case STATUS_ECC_HAS_BITFLIPS:
return nanddev_get_ecc_conf(nand)->strength;
default:
break;
}
/* More than 1-bit error was detected in one or more sectors and
* cannot be corrected.
*/
return -EBADMSG;
}
static const struct spinand_info foresee_spinand_table[] = {
SPINAND_INFO("F35SQA002G",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x72, 0x72),
NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 1, 1, 1),
NAND_ECCREQ(1, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_variants,
&update_cache_variants),
SPINAND_HAS_QE_BIT,
SPINAND_ECCINFO(&f35sqa002g_ooblayout,
f35sqa002g_ecc_get_status)),
};
static const struct spinand_manufacturer_ops foresee_spinand_manuf_ops = {
};
const struct spinand_manufacturer foresee_spinand_manufacturer = {
.id = SPINAND_MFR_FORESEE,
.name = "FORESEE",
.chips = foresee_spinand_table,
.nchips = ARRAY_SIZE(foresee_spinand_table),
.ops = &foresee_spinand_manuf_ops,
};

1
include/linux/mtd/spinand.h
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@ -263,6 +263,7 @@ struct spinand_manufacturer {
extern const struct spinand_manufacturer alliancememory_spinand_manufacturer;
extern const struct spinand_manufacturer ato_spinand_manufacturer;
extern const struct spinand_manufacturer esmt_c8_spinand_manufacturer;
extern const struct spinand_manufacturer foresee_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;