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[92.40.202.88]) by smtp.gmail.com with ESMTPSA id e11-20020adffd0b000000b0020e6ce4dabdsm10221095wrr.103.2022.06.04.04.31.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 04 Jun 2022 04:31:49 -0700 (PDT) From: Aidan MacDonald To: miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com Cc: linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2] mtd: spinand: Add support for ATO25D1GA Date: Sat, 4 Jun 2022 12:32:50 +0100 Message-Id: <20220604113250.4745-1-aidanmacdonald.0x0@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add support for the ATO25D1GA SPI NAND flash. Datasheet: - https://atta.szlcsc.com/upload/public/pdf/source/20191212/C469320_04599D6= 7B03B078044EB65FF5AEDDDE9.pdf Signed-off-by: Aidan MacDonald --- v2: Put core.o first in Makefile drivers/mtd/nand/spi/Makefile | 2 +- drivers/mtd/nand/spi/ato.c | 86 +++++++++++++++++++++++++++++++++++ drivers/mtd/nand/spi/core.c | 1 + include/linux/mtd/spinand.h | 1 + 4 files changed, 89 insertions(+), 1 deletion(-) create mode 100644 drivers/mtd/nand/spi/ato.c diff --git a/drivers/mtd/nand/spi/Makefile b/drivers/mtd/nand/spi/Makefile index 80dabe6ff0f3..b520fe634041 100644 --- a/drivers/mtd/nand/spi/Makefile +++ b/drivers/mtd/nand/spi/Makefile @@ -1,3 +1,3 @@ # SPDX-License-Identifier: GPL-2.0 -spinand-objs :=3D core.o gigadevice.o macronix.o micron.o paragon.o toshib= a.o winbond.o xtx.o +spinand-objs :=3D core.o ato.o gigadevice.o macronix.o micron.o paragon.o = toshiba.o winbond.o xtx.o obj-$(CONFIG_MTD_SPI_NAND) +=3D spinand.o diff --git a/drivers/mtd/nand/spi/ato.c b/drivers/mtd/nand/spi/ato.c new file mode 100644 index 000000000000..82b377c06812 --- /dev/null +++ b/drivers/mtd/nand/spi/ato.c @@ -0,0 +1,86 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2022 Aidan MacDonald + * + * Author: Aidan MacDonald + */ + +#include +#include +#include + + +#define SPINAND_MFR_ATO 0x9b + + +static SPINAND_OP_VARIANTS(read_cache_variants, + SPINAND_PAGE_READ_FROM_CACHE_X4_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 ato25d1ga_ooblayout_ecc(struct mtd_info *mtd, int section, + struct mtd_oob_region *region) +{ + if (section > 3) + return -ERANGE; + + region->offset =3D (16 * section) + 8; + region->length =3D 8; + return 0; +} + +static int ato25d1ga_ooblayout_free(struct mtd_info *mtd, int section, + struct mtd_oob_region *region) +{ + if (section > 3) + return -ERANGE; + + if (section) { + region->offset =3D (16 * section); + region->length =3D 8; + } else { + /* first byte of section 0 is reserved for the BBM */ + region->offset =3D 1; + region->length =3D 7; + } + + return 0; +} + +static const struct mtd_ooblayout_ops ato25d1ga_ooblayout =3D { + .ecc =3D ato25d1ga_ooblayout_ecc, + .free =3D ato25d1ga_ooblayout_free, +}; + + +static const struct spinand_info ato_spinand_table[] =3D { + SPINAND_INFO("ATO25D1GA", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x12), + 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(&ato25d1ga_ooblayout, NULL)), +}; + +static const struct spinand_manufacturer_ops ato_spinand_manuf_ops =3D { +}; + +const struct spinand_manufacturer ato_spinand_manufacturer =3D { + .id =3D SPINAND_MFR_ATO, + .name =3D "ATO", + .chips =3D ato_spinand_table, + .nchips =3D ARRAY_SIZE(ato_spinand_table), + .ops =3D &ato_spinand_manuf_ops, +}; diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c index d5b685d1605e..9d73910a7ae8 100644 --- a/drivers/mtd/nand/spi/core.c +++ b/drivers/mtd/nand/spi/core.c @@ -927,6 +927,7 @@ static const struct nand_ops spinand_ops =3D { }; =20 static const struct spinand_manufacturer *spinand_manufacturers[] =3D { + &ato_spinand_manufacturer, &gigadevice_spinand_manufacturer, ¯onix_spinand_manufacturer, µn_spinand_manufacturer, diff --git a/include/linux/mtd/spinand.h b/include/linux/mtd/spinand.h index 5584d3bb6556..6d3392a7edc6 100644 --- a/include/linux/mtd/spinand.h +++ b/include/linux/mtd/spinand.h @@ -260,6 +260,7 @@ struct spinand_manufacturer { }; =20 /* SPI NAND manufacturers */ +extern const struct spinand_manufacturer ato_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; --=20 2.35.1