From: Michael Trimarchi michael@amarulasolutions.com
Upstream linux commit 9b2d61f80b060c.
Move Toshiba specific initialization and detection logic into nand_toshiba.c. This is part of the "separate vendor specific code from core" cleanup process.
Signed-off-by: Michael Trimarchi michael@amarulasolutions.com Signed-off-by: Dario Binacchi dario.binacchi@amarulasolutions.com ---
Changes in v3: - Use commit sha1 with 13 digits. - Add the SPDX-License-Identifier tag. - Fix code style warnings raised by patman.
Changes in v2: - Use short-commit form - Remove linux info. Uboot seems that backport without add this extra information. - Adjust the include file in nand_toshiba.
drivers/mtd/nand/raw/Makefile | 3 +- drivers/mtd/nand/raw/nand_base.c | 21 ++---------- drivers/mtd/nand/raw/nand_ids.c | 2 +- drivers/mtd/nand/raw/nand_toshiba.c | 53 +++++++++++++++++++++++++++++ include/linux/mtd/rawnand.h | 1 + 5 files changed, 59 insertions(+), 21 deletions(-) create mode 100644 drivers/mtd/nand/raw/nand_toshiba.c
diff --git a/drivers/mtd/nand/raw/Makefile b/drivers/mtd/nand/raw/Makefile index 86d9b8e8beb8..16e0775395a2 100644 --- a/drivers/mtd/nand/raw/Makefile +++ b/drivers/mtd/nand/raw/Makefile @@ -14,7 +14,7 @@ obj-$(CONFIG_SPL_NAND_DENALI) += denali_spl.o obj-$(CONFIG_SPL_NAND_SIMPLE) += nand_spl_simple.o obj-$(CONFIG_SPL_NAND_LOAD) += nand_spl_load.o obj-$(CONFIG_SPL_NAND_ECC) += nand_ecc.o -obj-$(CONFIG_SPL_NAND_BASE) += nand_base.o nand_hynix.o nand_samsung.o +obj-$(CONFIG_SPL_NAND_BASE) += nand_base.o nand_hynix.o nand_samsung.o nand_toshiba.o obj-$(CONFIG_SPL_NAND_IDENT) += nand_ids.o nand_timings.o obj-$(CONFIG_TPL_NAND_INIT) += nand.o ifeq ($(CONFIG_SPL_ENV_SUPPORT),y) @@ -33,6 +33,7 @@ obj-y += nand_ecc.o obj-y += nand_base.o obj-y += nand_hynix.o obj-y += nand_samsung.o +obj-y += nand_toshiba.o obj-y += nand_timings.o
endif # not spl diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index 5698c1e6a229..4ea7f10a06fc 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -4163,12 +4163,11 @@ static int nand_get_bits_per_cell(u8 cellinfo) void nand_decode_ext_id(struct nand_chip *chip) { struct mtd_info *mtd = &chip->mtd; - int extid, id_len; + int extid; /* The 3rd id byte holds MLC / multichip data */ chip->bits_per_cell = nand_get_bits_per_cell(chip->id.data[2]); /* The 4th id byte is the important one */ extid = chip->id.data[3]; - id_len = chip->id.len;
/* Calc pagesize */ mtd->writesize = 1024 << (extid & 0x03); @@ -4184,21 +4183,6 @@ void nand_decode_ext_id(struct nand_chip *chip) /* Get buswidth information */ if (extid & 0x1) chip->options |= NAND_BUSWIDTH_16; - - /* - * Toshiba 24nm raw SLC (i.e., not BENAND) have 32B OOB per - * 512B page. For Toshiba SLC, we decode the 5th/6th byte as - * follows: - * - ID byte 6, bits[2:0]: 100b -> 43nm, 101b -> 32nm, - * 110b -> 24nm - * - ID byte 5, bit[7]: 1 -> BENAND, 0 -> raw SLC - */ - if (id_len >= 6 && chip->id.data[0] == NAND_MFR_TOSHIBA && - nand_is_slc(chip) && - (chip->id.data[5] & 0x7) == 0x6 /* 24nm */ && - !(chip->id.data[4] & 0x80) /* !BENAND */) { - mtd->oobsize = 32 * mtd->writesize >> 9; - } } EXPORT_SYMBOL_GPL(nand_decode_ext_id);
@@ -4289,8 +4273,7 @@ static void nand_decode_bbm_options(struct mtd_info *mtd, * AMD/Spansion, and Macronix. All others scan only the first page. */ if ((nand_is_slc(chip) && - (maf_id == NAND_MFR_TOSHIBA || - maf_id == NAND_MFR_AMD || + (maf_id == NAND_MFR_AMD || maf_id == NAND_MFR_MACRONIX)) || (mtd->writesize == 2048 && maf_id == NAND_MFR_MICRON)) chip->bbt_options |= NAND_BBT_SCAN2NDPAGE; diff --git a/drivers/mtd/nand/raw/nand_ids.c b/drivers/mtd/nand/raw/nand_ids.c index ec263a43279a..509652c8e26c 100644 --- a/drivers/mtd/nand/raw/nand_ids.c +++ b/drivers/mtd/nand/raw/nand_ids.c @@ -188,7 +188,7 @@ struct nand_flash_dev nand_flash_ids[] = {
/* Manufacturer IDs */ struct nand_manufacturers nand_manuf_ids[] = { - {NAND_MFR_TOSHIBA, "Toshiba"}, + {NAND_MFR_TOSHIBA, "Toshiba", &toshiba_nand_manuf_ops}, {NAND_MFR_SAMSUNG, "Samsung", &samsung_nand_manuf_ops}, {NAND_MFR_FUJITSU, "Fujitsu"}, {NAND_MFR_NATIONAL, "National"}, diff --git a/drivers/mtd/nand/raw/nand_toshiba.c b/drivers/mtd/nand/raw/nand_toshiba.c new file mode 100644 index 000000000000..f7426fa59f51 --- /dev/null +++ b/drivers/mtd/nand/raw/nand_toshiba.c @@ -0,0 +1,53 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2017 Free Electrons + * Copyright (C) 2017 NextThing Co + * + * Author: Boris Brezillon boris.brezillon@free-electrons.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/bug.h> +#include <linux/mtd/rawnand.h> + +static void toshiba_nand_decode_id(struct nand_chip *chip) +{ + struct mtd_info *mtd = nand_to_mtd(chip); + + nand_decode_ext_id(chip); + + /* + * Toshiba 24nm raw SLC (i.e., not BENAND) have 32B OOB per + * 512B page. For Toshiba SLC, we decode the 5th/6th byte as + * follows: + * - ID byte 6, bits[2:0]: 100b -> 43nm, 101b -> 32nm, + * 110b -> 24nm + * - ID byte 5, bit[7]: 1 -> BENAND, 0 -> raw SLC + */ + if (chip->id.len >= 6 && nand_is_slc(chip) && + (chip->id.data[5] & 0x7) == 0x6 /* 24nm */ && + !(chip->id.data[4] & 0x80) /* !BENAND */) + mtd->oobsize = 32 * mtd->writesize >> 9; +} + +static int toshiba_nand_init(struct nand_chip *chip) +{ + if (nand_is_slc(chip)) + chip->bbt_options |= NAND_BBT_SCAN2NDPAGE; + + return 0; +} + +const struct nand_manufacturer_ops toshiba_nand_manuf_ops = { + .detect = toshiba_nand_decode_id, + .init = toshiba_nand_init, +}; diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h index d35277d18799..73abb3401649 100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@ -1158,6 +1158,7 @@ struct nand_manufacturers { extern struct nand_flash_dev nand_flash_ids[]; extern struct nand_manufacturers nand_manuf_ids[];
+extern const struct nand_manufacturer_ops toshiba_nand_manuf_ops; extern const struct nand_manufacturer_ops samsung_nand_manuf_ops; extern const struct nand_manufacturer_ops hynix_nand_manuf_ops;