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author | James <> | 2015-11-04 11:49:21 +0000 |
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committer | James <> | 2015-11-04 11:49:21 +0000 |
commit | 716ca530e1c4515d8683c9d5be3d56b301758b66 (patch) | |
tree | 700eb5bcc1a462a5f21dcec15ce7c97ecfefa772 /target/linux/sunxi/patches-4.1/117-mtd-nand-add-hynix-init.patch | |
download | trunk-47381-master.tar.gz trunk-47381-master.tar.bz2 trunk-47381-master.zip |
Diffstat (limited to 'target/linux/sunxi/patches-4.1/117-mtd-nand-add-hynix-init.patch')
-rw-r--r-- | target/linux/sunxi/patches-4.1/117-mtd-nand-add-hynix-init.patch | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/target/linux/sunxi/patches-4.1/117-mtd-nand-add-hynix-init.patch b/target/linux/sunxi/patches-4.1/117-mtd-nand-add-hynix-init.patch new file mode 100644 index 0000000..c6554da --- /dev/null +++ b/target/linux/sunxi/patches-4.1/117-mtd-nand-add-hynix-init.patch @@ -0,0 +1,220 @@ +From 5c5e3963a1b58be1669da5da93f51dc339cd73d7 Mon Sep 17 00:00:00 2001 +From: Boris BREZILLON <b.brezillon.dev@gmail.com> +Date: Mon, 24 Feb 2014 16:30:22 +0100 +Subject: [PATCH] mtd: nand: Add hynix specific initializer + +Add an hynix initiliazer to manage read retries on h27uxgt8t2a chip. + +Signed-off-by: Boris BREZILLON <b.brezillon.dev@gmail.com> +Signed-off-by: Hans de Goede <hdegoede@redhat.com> +--- + drivers/mtd/nand/Makefile | 2 +- + drivers/mtd/nand/nand_hynix.c | 159 ++++++++++++++++++++++++++++++++++++++++++ + drivers/mtd/nand/nand_ids.c | 3 +- + include/linux/mtd/nand.h | 2 + + 4 files changed, 164 insertions(+), 2 deletions(-) + create mode 100644 drivers/mtd/nand/nand_hynix.c + +--- a/drivers/mtd/nand/Makefile ++++ b/drivers/mtd/nand/Makefile +@@ -5,7 +5,7 @@ + obj-$(CONFIG_MTD_NAND) += nand.o + obj-$(CONFIG_MTD_NAND_ECC) += nand_ecc.o + obj-$(CONFIG_MTD_NAND_BCH) += nand_bch.o +-obj-$(CONFIG_MTD_NAND_IDS) += nand_ids.o ++obj-$(CONFIG_MTD_NAND_IDS) += nand_ids.o nand_hynix.o + obj-$(CONFIG_MTD_SM_COMMON) += sm_common.o + + obj-$(CONFIG_MTD_NAND_CAFE) += cafe_nand.o +--- /dev/null ++++ b/drivers/mtd/nand/nand_hynix.c +@@ -0,0 +1,159 @@ ++/* ++ * Copyright (C) 2014 Boris BREZILLON <b.brezillon.dev@gmail.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/module.h> ++#include <linux/mtd/nand.h> ++#include <linux/slab.h> ++ ++static u8 h27ucg8t2a_read_retry_regs[] = { ++ 0xcc, 0xbf, 0xaa, 0xab, 0xcd, 0xad, 0xae, 0xaf ++}; ++ ++struct hynix_read_retry { ++ u8 *regs; ++ u8 values[64]; ++}; ++ ++struct hynix_nand { ++ struct hynix_read_retry read_retry; ++}; ++ ++int nand_setup_read_retry_hynix(struct mtd_info *mtd, int retry_mode) ++{ ++ struct nand_chip *chip = mtd->priv; ++ struct hynix_nand *hynix = chip->manuf_priv; ++ int offset = retry_mode * 8; ++ int status; ++ int i; ++ ++ chip->cmdfunc(mtd, 0x36, -1, -1); ++ for (i = 0; i < 8; i++) { ++ int column = hynix->read_retry.regs[i]; ++ column |= column << 8; ++ chip->cmdfunc(mtd, NAND_CMD_NONE, column, -1); ++ chip->write_byte(mtd, hynix->read_retry.values[offset + i]); ++ } ++ chip->cmdfunc(mtd, 0x16, -1, -1); ++ ++ status = chip->waitfunc(mtd, chip); ++ if (status & NAND_STATUS_FAIL) ++ return -EIO; ++ ++ return 0; ++} ++ ++static void h27ucg8t2a_cleanup(struct mtd_info *mtd) ++{ ++ struct nand_chip *chip = mtd->priv; ++ kfree(chip->manuf_priv); ++} ++ ++static int h27ucg8t2a_init(struct mtd_info *mtd, const uint8_t *id) ++{ ++ struct nand_chip *chip = mtd->priv; ++ struct hynix_nand *hynix; ++ u8 * buf = NULL; ++ int i, j; ++ int ret; ++ ++ buf = kzalloc(1024, GFP_KERNEL); ++ if (!buf) ++ return -ENOMEM; ++ ++ chip->select_chip(mtd, 0); ++ chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1); ++ chip->cmdfunc(mtd, 0x36, 0xff, -1); ++ chip->write_byte(mtd, 0x40); ++ chip->cmdfunc(mtd, NAND_CMD_NONE, 0xcc, -1); ++ chip->write_byte(mtd, 0x4d); ++ chip->cmdfunc(mtd, 0x16, -1, -1); ++ chip->cmdfunc(mtd, 0x17, -1, -1); ++ chip->cmdfunc(mtd, 0x04, -1, -1); ++ chip->cmdfunc(mtd, 0x19, -1, -1); ++ chip->cmdfunc(mtd, NAND_CMD_READ0, 0x0, 0x200); ++ ++ chip->read_buf(mtd, buf, 2); ++ if (buf[0] != 0x8 || buf[1] != 0x8) { ++ ret = -EINVAL; ++ goto leave; ++ } ++ chip->read_buf(mtd, buf, 1024); ++ ++ ret = 0; ++ for (j = 0; j < 8; j++) { ++ for (i = 0; i < 64; i++) { ++ u8 *tmp = buf + (128 * j); ++ if ((tmp[i] | tmp[i + 64]) != 0xff) { ++ ret = -EINVAL; ++ goto leave; ++ } ++ } ++ } ++ ++ chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1); ++ chip->cmdfunc(mtd, 0x38, -1, -1); ++ chip->select_chip(mtd, -1); ++ ++ if (!ret) { ++ hynix = kzalloc(sizeof(*hynix), GFP_KERNEL); ++ if (!hynix) { ++ ret = -ENOMEM; ++ goto leave; ++ } ++ ++ hynix->read_retry.regs = h27ucg8t2a_read_retry_regs; ++ memcpy(hynix->read_retry.values, buf, 64); ++ chip->manuf_priv = hynix; ++ chip->setup_read_retry = nand_setup_read_retry_hynix; ++ chip->read_retries = 8; ++ chip->manuf_cleanup = h27ucg8t2a_cleanup; ++ } ++ ++leave: ++ kfree(buf); ++ ++ return ret; ++} ++ ++struct hynix_nand_initializer { ++ u8 id[6]; ++ int (*init)(struct mtd_info *mtd, const uint8_t *id); ++}; ++ ++struct hynix_nand_initializer initializers[] = { ++ { ++ .id = {NAND_MFR_HYNIX, 0xde, 0x94, 0xda, 0x74, 0xc4}, ++ .init = h27ucg8t2a_init, ++ }, ++}; ++ ++int hynix_nand_init(struct mtd_info *mtd, const uint8_t *id) ++{ ++ int i; ++ ++ for (i = 0; i < ARRAY_SIZE(initializers); i++) { ++ struct hynix_nand_initializer *initializer = &initializers[i]; ++ if (memcmp(id, initializer->id, sizeof(initializer->id))) ++ continue; ++ ++ return initializer->init(mtd, id); ++ } ++ ++ return 0; ++} ++EXPORT_SYMBOL(hynix_nand_init); ++ ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Boris BREZILLON <b.brezillon.dev@gmail.com>"); ++MODULE_DESCRIPTION("Hynix NAND specific code"); +--- a/drivers/mtd/nand/nand_ids.c ++++ b/drivers/mtd/nand/nand_ids.c +@@ -163,6 +163,7 @@ struct nand_flash_dev nand_flash_ids[] = + {NULL} + }; + ++ + /* Manufacturer IDs */ + struct nand_manufacturers nand_manuf_ids[] = { + {NAND_MFR_TOSHIBA, "Toshiba"}, +@@ -171,7 +172,7 @@ struct nand_manufacturers nand_manuf_ids + {NAND_MFR_NATIONAL, "National"}, + {NAND_MFR_RENESAS, "Renesas"}, + {NAND_MFR_STMICRO, "ST Micro"}, +- {NAND_MFR_HYNIX, "Hynix"}, ++ {NAND_MFR_HYNIX, "Hynix", hynix_nand_init}, + {NAND_MFR_MICRON, "Micron"}, + {NAND_MFR_AMD, "AMD/Spansion"}, + {NAND_MFR_MACRONIX, "Macronix"}, +--- a/include/linux/mtd/nand.h ++++ b/include/linux/mtd/nand.h +@@ -959,6 +959,8 @@ struct nand_manufacturers { + extern struct nand_flash_dev nand_flash_ids[]; + extern struct nand_manufacturers nand_manuf_ids[]; + ++int hynix_nand_init(struct mtd_info *mtd, const uint8_t *id); ++ + extern int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd); + extern int nand_default_bbt(struct mtd_info *mtd); + extern int nand_markbad_bbt(struct mtd_info *mtd, loff_t offs); |