diff options
Diffstat (limited to 'target/linux/generic/backport-5.4/463-v5.3-mtd-spinand-Add-initial-support-for-Paragon-PN26G0xA.patch')
| -rw-r--r-- | target/linux/generic/backport-5.4/463-v5.3-mtd-spinand-Add-initial-support-for-Paragon-PN26G0xA.patch | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/463-v5.3-mtd-spinand-Add-initial-support-for-Paragon-PN26G0xA.patch b/target/linux/generic/backport-5.4/463-v5.3-mtd-spinand-Add-initial-support-for-Paragon-PN26G0xA.patch new file mode 100644 index 0000000000..17b8e779bc --- /dev/null +++ b/target/linux/generic/backport-5.4/463-v5.3-mtd-spinand-Add-initial-support-for-Paragon-PN26G0xA.patch @@ -0,0 +1,203 @@ +From 3552691616c940a7c4125c2678ba816653cd725e Mon Sep 17 00:00:00 2001 +From: Jeff Kletsky <git-commits@allycomm.com> +Date: Tue, 18 Jun 2019 10:08:05 -0700 +Subject: [PATCH] mtd: spinand: Add initial support for Paragon PN26G0xA + +Add initial support for Paragon Technology +PN26G01Axxxxx and PN26G02Axxxxx SPI NAND + +Datasheets available at +http://www.xtxtech.com/upfile/2016082517274590.pdf +http://www.xtxtech.com/upfile/2016082517282329.pdf + +Signed-off-by: Jeff Kletsky <git-commits@allycomm.com> +Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de> +Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> + +ADOPTED FROM UPSTREAM due to upstream commit 377e517b5fa5 in Linux 5.2 + which added another parameter to NAND_MEMORG +--- + drivers/mtd/nand/spi/Makefile | 2 +- + drivers/mtd/nand/spi/core.c | 1 + + drivers/mtd/nand/spi/paragon.c | 147 +++++++++++++++++++++++++++++++++ + include/linux/mtd/spinand.h | 1 + + 4 files changed, 150 insertions(+), 1 deletion(-) + create mode 100644 drivers/mtd/nand/spi/paragon.c + +--- a/drivers/mtd/nand/spi/Makefile ++++ b/drivers/mtd/nand/spi/Makefile +@@ -1,3 +1,3 @@ + # SPDX-License-Identifier: GPL-2.0 +-spinand-objs := core.o gigadevice.o macronix.o micron.o toshiba.o winbond.o ++spinand-objs := core.o gigadevice.o macronix.o micron.o paragon.o toshiba.o winbond.o + obj-$(CONFIG_MTD_SPI_NAND) += spinand.o +--- a/drivers/mtd/nand/spi/core.c ++++ b/drivers/mtd/nand/spi/core.c +@@ -765,6 +765,7 @@ static const struct spinand_manufacturer + &gigadevice_spinand_manufacturer, + ¯onix_spinand_manufacturer, + µn_spinand_manufacturer, ++ ¶gon_spinand_manufacturer, + &toshiba_spinand_manufacturer, + &winbond_spinand_manufacturer, + }; +--- /dev/null ++++ b/drivers/mtd/nand/spi/paragon.c +@@ -0,0 +1,147 @@ ++// SPDX-License-Identifier: GPL-2.0 ++/* ++ * Copyright (C) 2019 Jeff Kletsky ++ * ++ * Author: Jeff Kletsky <git-commits@allycomm.com> ++ */ ++ ++#include <linux/device.h> ++#include <linux/kernel.h> ++#include <linux/mtd/spinand.h> ++ ++ ++#define SPINAND_MFR_PARAGON 0xa1 ++ ++ ++#define PN26G0XA_STATUS_ECC_BITMASK (3 << 4) ++ ++#define PN26G0XA_STATUS_ECC_NONE_DETECTED (0 << 4) ++#define PN26G0XA_STATUS_ECC_1_7_CORRECTED (1 << 4) ++#define PN26G0XA_STATUS_ECC_ERRORED (2 << 4) ++#define PN26G0XA_STATUS_ECC_8_CORRECTED (3 << 4) ++ ++ ++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 pn26g0xa_ooblayout_ecc(struct mtd_info *mtd, int section, ++ struct mtd_oob_region *region) ++{ ++ if (section > 3) ++ return -ERANGE; ++ ++ region->offset = 6 + (15 * section); /* 4 BBM + 2 user bytes */ ++ region->length = 13; ++ ++ return 0; ++} ++ ++static int pn26g0xa_ooblayout_free(struct mtd_info *mtd, int section, ++ struct mtd_oob_region *region) ++{ ++ if (section > 4) ++ return -ERANGE; ++ ++ if (section == 4) { ++ region->offset = 64; ++ region->length = 64; ++ } else { ++ region->offset = 4 + (15 * section); ++ region->length = 2; ++ } ++ ++ return 0; ++} ++ ++static int pn26g0xa_ecc_get_status(struct spinand_device *spinand, ++ u8 status) ++{ ++ switch (status & PN26G0XA_STATUS_ECC_BITMASK) { ++ case PN26G0XA_STATUS_ECC_NONE_DETECTED: ++ return 0; ++ ++ case PN26G0XA_STATUS_ECC_1_7_CORRECTED: ++ return 7; /* Return upper limit by convention */ ++ ++ case PN26G0XA_STATUS_ECC_8_CORRECTED: ++ return 8; ++ ++ case PN26G0XA_STATUS_ECC_ERRORED: ++ return -EBADMSG; ++ ++ default: ++ break; ++ } ++ ++ return -EINVAL; ++} ++ ++static const struct mtd_ooblayout_ops pn26g0xa_ooblayout = { ++ .ecc = pn26g0xa_ooblayout_ecc, ++ .free = pn26g0xa_ooblayout_free, ++}; ++ ++ ++static const struct spinand_info paragon_spinand_table[] = { ++ SPINAND_INFO("PN26G01A", 0xe1, ++ NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), ++ NAND_ECCREQ(8, 512), ++ SPINAND_INFO_OP_VARIANTS(&read_cache_variants, ++ &write_cache_variants, ++ &update_cache_variants), ++ 0, ++ SPINAND_ECCINFO(&pn26g0xa_ooblayout, ++ pn26g0xa_ecc_get_status)), ++ SPINAND_INFO("PN26G02A", 0xe2, ++ NAND_MEMORG(1, 2048, 128, 64, 2048, 1, 1, 1), ++ NAND_ECCREQ(8, 512), ++ SPINAND_INFO_OP_VARIANTS(&read_cache_variants, ++ &write_cache_variants, ++ &update_cache_variants), ++ 0, ++ SPINAND_ECCINFO(&pn26g0xa_ooblayout, ++ pn26g0xa_ecc_get_status)), ++}; ++ ++static int paragon_spinand_detect(struct spinand_device *spinand) ++{ ++ u8 *id = spinand->id.data; ++ int ret; ++ ++ /* Read ID returns [0][MID][DID] */ ++ ++ if (id[1] != SPINAND_MFR_PARAGON) ++ return 0; ++ ++ ret = spinand_match_and_init(spinand, paragon_spinand_table, ++ ARRAY_SIZE(paragon_spinand_table), ++ id[2]); ++ if (ret) ++ return ret; ++ ++ return 1; ++} ++ ++static const struct spinand_manufacturer_ops paragon_spinand_manuf_ops = { ++ .detect = paragon_spinand_detect, ++}; ++ ++const struct spinand_manufacturer paragon_spinand_manufacturer = { ++ .id = SPINAND_MFR_PARAGON, ++ .name = "Paragon", ++ .ops = ¶gon_spinand_manuf_ops, ++}; +--- a/include/linux/mtd/spinand.h ++++ b/include/linux/mtd/spinand.h +@@ -227,6 +227,7 @@ struct 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; ++extern const struct spinand_manufacturer paragon_spinand_manufacturer; + extern const struct spinand_manufacturer toshiba_spinand_manufacturer; + extern const struct spinand_manufacturer winbond_spinand_manufacturer; + |