From 49c8e854869d673df8452f24dfa8989cd0f615a8 Mon Sep 17 00:00:00 2001 From: Martin Kurbanov Date: Mon, 2 Oct 2023 17:04:58 +0300 Subject: [PATCH] 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: Martin Kurbanov Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20231002140458.147605-1-mmkurbanov@salutedevices.com --- drivers/mtd/nand/spi/Makefile | 2 +- drivers/mtd/nand/spi/core.c | 1 + drivers/mtd/nand/spi/foresee.c | 95 ++++++++++++++++++++++++++++++++++ include/linux/mtd/spinand.h | 1 + 4 files changed, 98 insertions(+), 1 deletion(-) create mode 100644 drivers/mtd/nand/spi/foresee.c --- a/drivers/mtd/nand/spi/Makefile +++ b/drivers/mtd/nand/spi/Makefile @@ -1,4 +1,4 @@ # 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 --- a/drivers/mtd/nand/spi/core.c +++ b/drivers/mtd/nand/spi/core.c @@ -940,6 +940,7 @@ static const struct spinand_manufacturer &alliancememory_spinand_manufacturer, &ato_spinand_manufacturer, &esmt_c8_spinand_manufacturer, + &foresee_spinand_manufacturer, &gigadevice_spinand_manufacturer, ¯onix_spinand_manufacturer, µn_spinand_manufacturer, --- /dev/null +++ b/drivers/mtd/nand/spi/foresee.c @@ -0,0 +1,95 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright (c) 2023, SberDevices. All Rights Reserved. + * + * Author: Martin Kurbanov + */ + +#include +#include +#include + +#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, +}; --- a/include/linux/mtd/spinand.h +++ b/include/linux/mtd/spinand.h @@ -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;