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Message-Id: <1464353701-23233-12-git-send-email-boris.brezillon@free-electrons.com>
Date: Fri, 27 May 2016 14:54:57 +0200
From: Boris Brezillon <boris.brezillon@...e-electrons.com>
To: Boris Brezillon <boris.brezillon@...e-electrons.com>,
Richard Weinberger <richard@....at>,
linux-mtd@...ts.infradead.org,
David Woodhouse <dwmw2@...radead.org>,
Brian Norris <computersforpeace@...il.com>
Cc: Hans de Goede <hdegoede@...hat.com>, linux-kernel@...r.kernel.org
Subject: [PATCH 11/15] mtd: nand: move AMD/Spansion specific initialization in nand_amd.c
Moving AMD/Spansion specific initialization into nand_amd.c. This is part
of the "separate vendor specific code from core" cleanup process.
Signed-off-by: Boris Brezillon <boris.brezillon@...e-electrons.com>
---
drivers/mtd/nand/Makefile | 1 +
drivers/mtd/nand/nand_amd.c | 60 ++++++++++++++++++++++++++++++++++++++++++++
drivers/mtd/nand/nand_base.c | 19 +-------------
drivers/mtd/nand/nand_ids.c | 3 ++-
4 files changed, 64 insertions(+), 19 deletions(-)
create mode 100644 drivers/mtd/nand/nand_amd.c
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index f1bd008..19d0cb8 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -58,6 +58,7 @@ obj-$(CONFIG_MTD_NAND_BRCMNAND) += brcmnand/
obj-$(CONFIG_MTD_NAND_QCOM) += qcom_nandc.o
nand-objs := nand_base.o nand_bbt.o nand_timings.o nand_ids.o
+nand-objs += nand_amd.o
nand-objs += nand_hynix.o
nand-objs += nand_micron.o
nand-objs += nand_samsung.o
diff --git a/drivers/mtd/nand/nand_amd.c b/drivers/mtd/nand/nand_amd.c
new file mode 100644
index 0000000..8bb69aa
--- /dev/null
+++ b/drivers/mtd/nand/nand_amd.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2013 Boris Brezillon <boris.brezillon@...e-electrons.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/mtd/nand.h>
+
+static int amd_nand_decode_id(struct nand_chip *chip)
+{
+ struct mtd_info *mtd = nand_to_mtd(chip);
+
+ /*
+ * The NAND is compatible with the JEDEC or ONFI standard, we already
+ * have all the information we could retrieve from the NAND ID.
+ */
+ if (chip->onfi_version || chip->jedec_version)
+ return 0;
+
+ /*
+ * Check for Spansion/AMD ID + repeating 5th, 6th byte since
+ * some Spansion chips have erasesize that conflicts with size
+ * listed in nand_ids table.
+ * Data sheet (5 byte ID): Spansion S30ML-P ORNAND (p.39)
+ */
+ if (chip->id.data[4] != 0x00 && chip->id.data[5] == 0x00 &&
+ chip->id.data[6] == 0x00 && chip->id.data[7] == 0x00 &&
+ mtd->writesize == 512) {
+ mtd->erasesize = 128 * 1024;
+ mtd->erasesize <<= ((chip->id.data[3] & 0x03) << 1);
+ }
+
+ return 0;
+}
+
+static int amd_nand_init(struct nand_chip *chip)
+{
+ int ret;
+
+ ret = amd_nand_decode_id(chip);
+ if (ret)
+ return ret;
+
+ if (nand_is_slc(chip))
+ chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
+
+ return 0;
+}
+
+const struct nand_manufacturer_ops amd_nand_manuf_ops = {
+ .init = amd_nand_init,
+};
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 662d4c5..cde99b0 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -3585,8 +3585,6 @@ static void nand_decode_ext_id(struct nand_chip *chip)
static void nand_decode_id(struct nand_chip *chip, struct nand_flash_dev *type)
{
struct mtd_info *mtd = nand_to_mtd(chip);
- u8 *id_data = chip->id.data;
- int maf_id = id_data[0];
mtd->erasesize = type->erasesize;
mtd->writesize = type->pagesize;
@@ -3594,19 +3592,6 @@ static void nand_decode_id(struct nand_chip *chip, struct nand_flash_dev *type)
/* All legacy ID NAND are small-page, SLC */
chip->bits_per_cell = 1;
-
- /*
- * Check for Spansion/AMD ID + repeating 5th, 6th byte since
- * some Spansion chips have erasesize that conflicts with size
- * listed in nand_ids table.
- * Data sheet (5 byte ID): Spansion S30ML-P ORNAND (p.39)
- */
- if (maf_id == NAND_MFR_AMD && id_data[4] != 0x00 && id_data[5] == 0x00
- && id_data[6] == 0x00 && id_data[7] == 0x00
- && mtd->writesize == 512) {
- mtd->erasesize = 128 * 1024;
- mtd->erasesize <<= ((id_data[3] & 0x03) << 1);
- }
}
/*
@@ -3632,9 +3617,7 @@ static void nand_decode_bbm_options(struct nand_chip *chip)
* Micron devices with 2KiB pages and on SLC Samsung, Hynix, Toshiba,
* AMD/Spansion, and Macronix. All others scan only the first page.
*/
- if ((nand_is_slc(chip) &&
- (maf_id == NAND_MFR_AMD ||
- maf_id == NAND_MFR_MACRONIX)))
+ if (nand_is_slc(chip) && maf_id == NAND_MFR_MACRONIX)
chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
}
diff --git a/drivers/mtd/nand/nand_ids.c b/drivers/mtd/nand/nand_ids.c
index 5d02787..299b2b1 100644
--- a/drivers/mtd/nand/nand_ids.c
+++ b/drivers/mtd/nand/nand_ids.c
@@ -170,6 +170,7 @@ extern const struct nand_manufacturer_ops toshiba_nand_manuf_ops;
extern const struct nand_manufacturer_ops samsung_nand_manuf_ops;
extern const struct nand_manufacturer_ops hynix_nand_manuf_ops;
extern const struct nand_manufacturer_ops micron_nand_manuf_ops;
+extern const struct nand_manufacturer_ops amd_nand_manuf_ops;
struct nand_manufacturers nand_manuf_ids[] = {
{NAND_MFR_TOSHIBA, "Toshiba", &toshiba_nand_manuf_ops},
@@ -180,7 +181,7 @@ struct nand_manufacturers nand_manuf_ids[] = {
{NAND_MFR_STMICRO, "ST Micro"},
{NAND_MFR_HYNIX, "Hynix", &hynix_nand_manuf_ops},
{NAND_MFR_MICRON, "Micron", µn_nand_manuf_ops},
- {NAND_MFR_AMD, "AMD/Spansion"},
+ {NAND_MFR_AMD, "AMD/Spansion", &amd_nand_manuf_ops},
{NAND_MFR_MACRONIX, "Macronix"},
{NAND_MFR_EON, "Eon"},
{NAND_MFR_SANDISK, "SanDisk"},
--
2.7.4
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