Commit f447318f authored by Martin Kurbanov's avatar Martin Kurbanov Committed by Miquel Raynal
Browse files

mtd: spinand: add support for FORESEE F35SQA002G 

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



Signed-off-by: default avatarMartin Kurbanov <mmkurbanov@salutedevices.com>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20231002140458.147605-1-mmkurbanov@salutedevices.com
parent 1cfa2f76

drivers/mtd/nand/spi/Makefile

+1 −1
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# 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

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,

drivers/mtd/nand/spi/foresee.c

0 → 100644
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// 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,

};

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;