Commit 5f284dc1 authored by Tianling Shen's avatar Tianling Shen Committed by Miquel Raynal
Browse files

mtd: spinand: add support for FudanMicro FM25S01A 

Add support for FudanMicro FM25S01A SPI NAND.
Datasheet: http://eng.fmsh.com/nvm/FM25S01A_ds_eng.pdf



Signed-off-by: default avatarTianling Shen <cnsztl@gmail.com>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
parent 49b92542

drivers/mtd/nand/spi/Makefile

+1 −1
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# SPDX-License-Identifier: GPL-2.0

spinand-objs := core.o otp.o

spinand-objs += alliancememory.o ato.o esmt.o foresee.o gigadevice.o macronix.o

spinand-objs += alliancememory.o ato.o esmt.o fmsh.o foresee.o gigadevice.o macronix.o

spinand-objs += micron.o paragon.o skyhigh.o toshiba.o winbond.o xtx.o

obj-$(CONFIG_MTD_SPI_NAND) += spinand.o

drivers/mtd/nand/spi/core.c

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@@ -1184,6 +1184,7 @@ static const struct spinand_manufacturer *spinand_manufacturers[] = { 
	&alliancememory_spinand_manufacturer,

	&ato_spinand_manufacturer,

	&esmt_c8_spinand_manufacturer,

	&fmsh_spinand_manufacturer,

	&foresee_spinand_manufacturer,

	&gigadevice_spinand_manufacturer,

	&macronix_spinand_manufacturer,

drivers/mtd/nand/spi/fmsh.c

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// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (c) 2020-2021 Rockchip Electronics Co., Ltd.

 *

 * Author: Dingqiang Lin <jon.lin@rock-chips.com>

 */



#include <linux/device.h>

#include <linux/kernel.h>

#include <linux/mtd/spinand.h>



#define SPINAND_MFR_FMSH		0xA1



static SPINAND_OP_VARIANTS(read_cache_variants,

		SPINAND_PAGE_READ_FROM_CACHE_1S_4S_4S_OP(0, 2, NULL, 0, 0),

		SPINAND_PAGE_READ_FROM_CACHE_1S_1S_4S_OP(0, 1, NULL, 0, 0),

		SPINAND_PAGE_READ_FROM_CACHE_1S_2S_2S_OP(0, 1, NULL, 0, 0),

		SPINAND_PAGE_READ_FROM_CACHE_1S_1S_2S_OP(0, 1, NULL, 0, 0),

		SPINAND_PAGE_READ_FROM_CACHE_FAST_1S_1S_1S_OP(0, 1, NULL, 0, 0),

		SPINAND_PAGE_READ_FROM_CACHE_1S_1S_1S_OP(0, 1, NULL, 0, 0));



static SPINAND_OP_VARIANTS(write_cache_variants,

		SPINAND_PROG_LOAD_1S_1S_4S_OP(true, 0, NULL, 0),

		SPINAND_PROG_LOAD_1S_1S_1S_OP(true, 0, NULL, 0));



static SPINAND_OP_VARIANTS(update_cache_variants,

		SPINAND_PROG_LOAD_1S_1S_4S_OP(false, 0, NULL, 0),

		SPINAND_PROG_LOAD_1S_1S_1S_OP(false, 0, NULL, 0));



static int fm25s01a_ooblayout_ecc(struct mtd_info *mtd, int section,

				  struct mtd_oob_region *region)

{

	return -ERANGE;

}



static int fm25s01a_ooblayout_free(struct mtd_info *mtd, int section,

				   struct mtd_oob_region *region)

{

	if (section)

		return -ERANGE;



	region->offset = 2;

	region->length = 62;



	return 0;

}



static const struct mtd_ooblayout_ops fm25s01a_ooblayout = {

	.ecc = fm25s01a_ooblayout_ecc,

	.free = fm25s01a_ooblayout_free,

};



static const struct spinand_info fmsh_spinand_table[] = {

	SPINAND_INFO("FM25S01A",

		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE4),

		     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),

		     SPINAND_HAS_QE_BIT,

		     SPINAND_ECCINFO(&fm25s01a_ooblayout, NULL)),

};



static const struct spinand_manufacturer_ops fmsh_spinand_manuf_ops = {

};



const struct spinand_manufacturer fmsh_spinand_manufacturer = {

	.id = SPINAND_MFR_FMSH,

	.name = "Fudan Micro",

	.chips = fmsh_spinand_table,

	.nchips = ARRAY_SIZE(fmsh_spinand_table),

	.ops = &fmsh_spinand_manuf_ops,

};

include/linux/mtd/spinand.h

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@@ -355,6 +355,7 @@ 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 fmsh_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;