mtd: nand: Move Macronix specific initialization in nand_macronix.c

Move Macronix specific initialization logic into nand_macronix.c. This
is part of the "separate vendor specific code from core" cleanup
process.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>

drivers/mtd/nand/Makefile

@@ -63,6 +63,7 @@ obj-$(CONFIG_MTD_NAND_MTK)		+= mtk_nand.o mtk_ecc.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_macronix.o
 nand-objs += nand_micron.o
 nand-objs += nand_samsung.o
 nand-objs += nand_toshiba.o

drivers/mtd/nand/nand_base.c

@@ -3842,23 +3842,12 @@ static void nand_decode_id(struct nand_chip *chip, struct nand_flash_dev *type)
 static void nand_decode_bbm_options(struct nand_chip *chip)
 {
 	struct mtd_info *mtd = nand_to_mtd(chip);
-	u8 *id_data = chip->id.data;
-	int maf_id = id_data[0];
 
 	/* Set the bad block position */
 	if (mtd->writesize > 512 || (chip->options & NAND_BUSWIDTH_16))
 		chip->badblockpos = NAND_LARGE_BADBLOCK_POS;
 	else
 		chip->badblockpos = NAND_SMALL_BADBLOCK_POS;
-
-	/*
-	 * Bad block marker is stored in the last page of each block on Samsung
-	 * and Hynix MLC devices; stored in first two pages of each block on
-	 * 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_MACRONIX)
-		chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
 }
 
 static inline bool is_full_id_nand(struct nand_flash_dev *type)

drivers/mtd/nand/nand_ids.c

@@ -180,7 +180,7 @@ static const struct nand_manufacturer nand_manufacturers[] = {
 	{NAND_MFR_HYNIX, "Hynix", &hynix_nand_manuf_ops},
 	{NAND_MFR_MICRON, "Micron", &micron_nand_manuf_ops},
 	{NAND_MFR_AMD, "AMD/Spansion", &amd_nand_manuf_ops},
-	{NAND_MFR_MACRONIX, "Macronix"},
+	{NAND_MFR_MACRONIX, "Macronix", &macronix_nand_manuf_ops},
 	{NAND_MFR_EON, "Eon"},
 	{NAND_MFR_SANDISK, "SanDisk"},
 	{NAND_MFR_INTEL, "Intel"},

drivers/mtd/nand/nand_macronix.c

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2017 Free Electrons
+ * Copyright (C) 2017 NextThing Co
+ *
+ * Author: Boris Brezillon <boris.brezillon@free-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 macronix_nand_init(struct nand_chip *chip)
+{
+	if (nand_is_slc(chip))
+		chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
+
+	return 0;
+}
+
+const struct nand_manufacturer_ops macronix_nand_manuf_ops = {
+	.init = macronix_nand_init,
+};

include/linux/mtd/nand.h

@@ -1099,6 +1099,7 @@ 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;
+extern const struct nand_manufacturer_ops macronix_nand_manuf_ops;
 
 int nand_default_bbt(struct mtd_info *mtd);
 int nand_markbad_bbt(struct mtd_info *mtd, loff_t offs);