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linux/drivers/mtd/nand/spi/toshiba.c
Lee Jones 6a21a1176f mtd: spinand: toshiba: Demote non-conformant kernel-doc header 
Fixes the following W=1 kernel build warning(s):

 drivers/mtd/nand/spi/toshiba.c:36: warning: Function parameter or member 'write_cache_variants' not described in 'SPINAND_OP_VARIANTS'
 drivers/mtd/nand/spi/toshiba.c:36: warning: Function parameter or member '0' not described in 'SPINAND_OP_VARIANTS'

Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Cc: Yoshio Furuyama <ytc-mb-yfuruyama7@kioxia.com>
Cc: Frieder Schrempf <frieder.schrempf@kontron.de>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20201109182206.3037326-10-lee.jones@linaro.org
2020-11-20 12:37:31 +01:00

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2018 exceet electronics GmbH
* Copyright (c) 2018 Kontron Electronics GmbH
*
* Author: Frieder Schrempf <frieder.schrempf@kontron.de>
*/
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/mtd/spinand.h>
/* Kioxia is new name of Toshiba memory. */
#define SPINAND_MFR_TOSHIBA 0x98
#define TOSH_STATUS_ECC_HAS_BITFLIPS_T (3 << 4)
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_x4_variants,
SPINAND_PROG_LOAD_X4(true, 0, NULL, 0),
SPINAND_PROG_LOAD(true, 0, NULL, 0));
static SPINAND_OP_VARIANTS(update_cache_x4_variants,
SPINAND_PROG_LOAD_X4(false, 0, NULL, 0),
SPINAND_PROG_LOAD(false, 0, NULL, 0));
/*
* Backward compatibility for 1st generation Serial NAND devices
* which don't support Quad Program Load operation.
*/
static SPINAND_OP_VARIANTS(write_cache_variants,
SPINAND_PROG_LOAD(true, 0, NULL, 0));
static SPINAND_OP_VARIANTS(update_cache_variants,
SPINAND_PROG_LOAD(false, 0, NULL, 0));
static int tx58cxgxsxraix_ooblayout_ecc(struct mtd_info *mtd, int section,
struct mtd_oob_region *region)
{
if (section > 0)
return -ERANGE;
region->offset = mtd->oobsize / 2;
region->length = mtd->oobsize / 2;
return 0;
}
static int tx58cxgxsxraix_ooblayout_free(struct mtd_info *mtd, int section,
struct mtd_oob_region *region)
{
if (section > 0)
return -ERANGE;
/* 2 bytes reserved for BBM */
region->offset = 2;
region->length = (mtd->oobsize / 2) - 2;
return 0;
}
static const struct mtd_ooblayout_ops tx58cxgxsxraix_ooblayout = {
.ecc = tx58cxgxsxraix_ooblayout_ecc,
.free = tx58cxgxsxraix_ooblayout_free,
};
static int tx58cxgxsxraix_ecc_get_status(struct spinand_device *spinand,
u8 status)
{
struct nand_device *nand = spinand_to_nand(spinand);
u8 mbf = 0;
struct spi_mem_op op = SPINAND_GET_FEATURE_OP(0x30, &mbf);
switch (status & STATUS_ECC_MASK) {
case STATUS_ECC_NO_BITFLIPS:
return 0;
case STATUS_ECC_UNCOR_ERROR:
return -EBADMSG;
case STATUS_ECC_HAS_BITFLIPS:
case TOSH_STATUS_ECC_HAS_BITFLIPS_T:
/*
* Let's try to retrieve the real maximum number of bitflips
* in order to avoid forcing the wear-leveling layer to move
* data around if it's not necessary.
*/
if (spi_mem_exec_op(spinand->spimem, &op))
return nanddev_get_ecc_conf(nand)->strength;
mbf >>= 4;
if (WARN_ON(mbf > nanddev_get_ecc_conf(nand)->strength || !mbf))
return nanddev_get_ecc_conf(nand)->strength;
return mbf;
default:
break;
}
return -EINVAL;
}
static const struct spinand_info toshiba_spinand_table[] = {
/* 3.3V 1Gb (1st generation) */
SPINAND_INFO("TC58CVG0S3HRAIG",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xC2),
NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_variants,
&update_cache_variants),
0,
SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout,
tx58cxgxsxraix_ecc_get_status)),
/* 3.3V 2Gb (1st generation) */
SPINAND_INFO("TC58CVG1S3HRAIG",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xCB),
NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_variants,
&update_cache_variants),
0,
SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout,
tx58cxgxsxraix_ecc_get_status)),
/* 3.3V 4Gb (1st generation) */
SPINAND_INFO("TC58CVG2S0HRAIG",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xCD),
NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_variants,
&update_cache_variants),
0,
SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout,
tx58cxgxsxraix_ecc_get_status)),
/* 1.8V 1Gb (1st generation) */
SPINAND_INFO("TC58CYG0S3HRAIG",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xB2),
NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_variants,
&update_cache_variants),
0,
SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout,
tx58cxgxsxraix_ecc_get_status)),
/* 1.8V 2Gb (1st generation) */
SPINAND_INFO("TC58CYG1S3HRAIG",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xBB),
NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_variants,
&update_cache_variants),
0,
SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout,
tx58cxgxsxraix_ecc_get_status)),
/* 1.8V 4Gb (1st generation) */
SPINAND_INFO("TC58CYG2S0HRAIG",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xBD),
NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_variants,
&update_cache_variants),
0,
SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout,
tx58cxgxsxraix_ecc_get_status)),
/*
* 2nd generation serial nand has HOLD_D which is equivalent to
* QE_BIT.
*/
/* 3.3V 1Gb (2nd generation) */
SPINAND_INFO("TC58CVG0S3HRAIJ",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE2),
NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_x4_variants,
&update_cache_x4_variants),
SPINAND_HAS_QE_BIT,
SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout,
tx58cxgxsxraix_ecc_get_status)),
/* 3.3V 2Gb (2nd generation) */
SPINAND_INFO("TC58CVG1S3HRAIJ",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xEB),
NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_x4_variants,
&update_cache_x4_variants),
SPINAND_HAS_QE_BIT,
SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout,
tx58cxgxsxraix_ecc_get_status)),
/* 3.3V 4Gb (2nd generation) */
SPINAND_INFO("TC58CVG2S0HRAIJ",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xED),
NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_x4_variants,
&update_cache_x4_variants),
SPINAND_HAS_QE_BIT,
SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout,
tx58cxgxsxraix_ecc_get_status)),
/* 3.3V 8Gb (2nd generation) */
SPINAND_INFO("TH58CVG3S0HRAIJ",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE4),
NAND_MEMORG(1, 4096, 256, 64, 4096, 80, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_x4_variants,
&update_cache_x4_variants),
SPINAND_HAS_QE_BIT,
SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout,
tx58cxgxsxraix_ecc_get_status)),
/* 1.8V 1Gb (2nd generation) */
SPINAND_INFO("TC58CYG0S3HRAIJ",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xD2),
NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_x4_variants,
&update_cache_x4_variants),
SPINAND_HAS_QE_BIT,
SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout,
tx58cxgxsxraix_ecc_get_status)),
/* 1.8V 2Gb (2nd generation) */
SPINAND_INFO("TC58CYG1S3HRAIJ",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xDB),
NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_x4_variants,
&update_cache_x4_variants),
SPINAND_HAS_QE_BIT,
SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout,
tx58cxgxsxraix_ecc_get_status)),
/* 1.8V 4Gb (2nd generation) */
SPINAND_INFO("TC58CYG2S0HRAIJ",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xDD),
NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_x4_variants,
&update_cache_x4_variants),
SPINAND_HAS_QE_BIT,
SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout,
tx58cxgxsxraix_ecc_get_status)),
/* 1.8V 8Gb (2nd generation) */
SPINAND_INFO("TH58CYG3S0HRAIJ",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xD4),
NAND_MEMORG(1, 4096, 256, 64, 4096, 80, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_x4_variants,
&update_cache_x4_variants),
SPINAND_HAS_QE_BIT,
SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout,
tx58cxgxsxraix_ecc_get_status)),
};
static const struct spinand_manufacturer_ops toshiba_spinand_manuf_ops = {
};
const struct spinand_manufacturer toshiba_spinand_manufacturer = {
.id = SPINAND_MFR_TOSHIBA,
.name = "Toshiba",
.chips = toshiba_spinand_table,
.nchips = ARRAY_SIZE(toshiba_spinand_table),
.ops = &toshiba_spinand_manuf_ops,
};
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