From 205a24e34751220c3ba04f0ac6ecc734e56ed225 Mon Sep 17 00:00:00 2001 From: Jon Lin Date: Sun, 17 Oct 2021 09:59:10 +0800 Subject: [PATCH] mtd: spinand: Support fmsh FM25S01A, FM25S02A, FM25S01 Change-Id: I7e0ceec39c57dc591d77a4ebde599ad326cf25b7 Signed-off-by: Jon Lin --- drivers/mtd/nand/spi/Makefile | 2 +- drivers/mtd/nand/spi/core.c | 1 + drivers/mtd/nand/spi/fmsh.c | 122 ++++++++++++++++++++++++++++++++++ include/linux/mtd/spinand.h | 1 + 4 files changed, 125 insertions(+), 1 deletion(-) create mode 100644 drivers/mtd/nand/spi/fmsh.c --- a/drivers/mtd/nand/spi/Makefile +++ b/drivers/mtd/nand/spi/Makefile @@ -1,6 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 spinand-objs := core.o esmt.o foresee.o etron.o gigadevice.o macronix.o micron.o paragon.o -spinand-objs += dosilicon.o +spinand-objs += dosilicon.o fmsh.o spinand-objs += toshiba.o winbond.o xtx.o obj-$(CONFIG_MTD_SPI_NAND) += spinand.o --- a/drivers/mtd/nand/spi/core.c +++ b/drivers/mtd/nand/spi/core.c @@ -828,6 +828,7 @@ static const struct nand_ops spinand_ops static const struct spinand_manufacturer *spinand_manufacturers[] = { &dosilicon_spinand_manufacturer, &etron_spinand_manufacturer, + &fmsh_spinand_manufacturer, &gigadevice_spinand_manufacturer, ¯onix_spinand_manufacturer, µn_spinand_manufacturer, --- /dev/null +++ b/drivers/mtd/nand/spi/fmsh.c @@ -0,0 +1,240 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2020-2021 Rockchip Electronics Co., Ltd. + * + * Authors: + * Dingqiang Lin + */ + +#ifndef __UBOOT__ +#include +#include +#endif +#include + +#define SPINAND_MFR_FMSH 0xA1 + +static SPINAND_OP_VARIANTS(read_cache_variants, + SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0), + SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), + SPINAND_PAGE_READ_FROM_CACHE_DUALIO_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 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, + .rfree = fm25s01a_ooblayout_free, +}; + +static int fm25s01_ooblayout_ecc(struct mtd_info *mtd, int section, + struct mtd_oob_region *region) +{ + if (section) + return -ERANGE; + + region->offset = 64; + region->length = 64; + + return 0; +} + +static int fm25s01_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 fm25s01_ooblayout = { + .ecc = fm25s01_ooblayout_ecc, + .rfree = fm25s01_ooblayout_free, +}; + +/* + * ecc bits: 0xC0[4,6] + * [0b000], No bit errors were detected; + * [0b001] and [0b011], 1~6 Bit errors were detected and corrected. Not + * reach Flipping Bits; + * [0b101], Bit error count equals the bit flip + * detection threshold + * [0b010], Multiple bit errors were detected and + * not corrected. + * others, Reserved. + */ +static int fm25s01bi3_ecc_ecc_get_status(struct spinand_device *spinand, + u8 status) +{ + struct nand_device *nand = spinand_to_nand(spinand); + u8 eccsr = (status & GENMASK(6, 4)) >> 4; + + if (eccsr <= 1 || eccsr == 3) + return eccsr; + else if (eccsr == 5) + return nand->eccreq.strength; + else + return -EBADMSG; +} + +static int fm25g0xd_ooblayout_ecc(struct mtd_info *mtd, int section, + struct mtd_oob_region *region) +{ + if (section) + return -ERANGE; + + region->offset = 64; + region->length = 64; + + return 0; +} + +static int fm25g0xd_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 fm25g0xd_ooblayout = { + .ecc = fm25g0xd_ooblayout_ecc, + .rfree = fm25g0xd_ooblayout_free, +}; + +/* + * ecc bits: 0xC0[4,6] + * [0x0], No bit errors were detected; + * [0x001, 0x011], Bit errors were detected and corrected. Not + * reach Flipping Bits; + * [0x100], Bit error count equals the bit flip + * detectionthreshold + * [0x101, 0x110], Reserved; + * [0x111], Multiple bit errors were detected and + * not corrected. + */ +static int fm25g0xd_ecc_get_status(struct spinand_device *spinand, + u8 status) +{ + struct nand_device *nand = spinand_to_nand(spinand); + u8 eccsr = (status & GENMASK(6, 4)) >> 4; + + if (eccsr <= 3) + return 0; + else if (eccsr == 4) + return nand->eccreq.strength; + else + return -EBADMSG; +} + +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), + 0, + SPINAND_ECCINFO(&fm25s01a_ooblayout, NULL)), + SPINAND_INFO("FM25S02A", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE5), + NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 2, 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)), + SPINAND_INFO("FM25S01", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xA1), + NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1), + NAND_ECCREQ(1, 512), + SPINAND_INFO_OP_VARIANTS(&read_cache_variants, + &write_cache_variants, + &update_cache_variants), + 0, + SPINAND_ECCINFO(&fm25s01_ooblayout, NULL)), + SPINAND_INFO("FM25LS01", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xA5), + NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1), + NAND_ECCREQ(1, 512), + SPINAND_INFO_OP_VARIANTS(&read_cache_variants, + &write_cache_variants, + &update_cache_variants), + 0, + SPINAND_ECCINFO(&fm25s01_ooblayout, NULL)), + SPINAND_INFO("FM25S01BI3", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xD4), + 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), + SPINAND_HAS_QE_BIT, + SPINAND_ECCINFO(&fm25s01_ooblayout, fm25s01bi3_ecc_ecc_get_status)), + SPINAND_INFO("FM25S02BI3-DND-A-G3", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xD6), + 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), + SPINAND_HAS_QE_BIT, + SPINAND_ECCINFO(&fm25s01_ooblayout, fm25s01bi3_ecc_ecc_get_status)), + SPINAND_INFO("FM25G02D", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xF2), + NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 1, 1, 1), + NAND_ECCREQ(4, 512), + SPINAND_INFO_OP_VARIANTS(&read_cache_variants, + &write_cache_variants, + &update_cache_variants), + SPINAND_HAS_QE_BIT, + SPINAND_ECCINFO(&fm25g0xd_ooblayout, fm25g0xd_ecc_get_status)), +}; + +static const struct spinand_manufacturer_ops fmsh_spinand_manuf_ops = { +}; + +const struct spinand_manufacturer fmsh_spinand_manufacturer = { + .id = SPINAND_MFR_FMSH, + .name = "FMSH", + .chips = fmsh_spinand_table, + .nchips = ARRAY_SIZE(fmsh_spinand_table), + .ops = &fmsh_spinand_manuf_ops, +}; --- a/include/linux/mtd/spinand.h +++ b/include/linux/mtd/spinand.h @@ -246,6 +246,7 @@ struct spinand_manufacturer { /* SPI NAND manufacturers */ extern const struct spinand_manufacturer dosilicon_spinand_manufacturer; extern const struct spinand_manufacturer etron_spinand_manufacturer; +extern const struct spinand_manufacturer fmsh_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;