MTD: Nand: Add JZ4740 NAND driver

Add support for the NAND controller on JZ4740 SoCs.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: linux-mtd@lists.infradead.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1470/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/include/asm/mach-jz4740/jz4740_nand.h

+/*
+ *  Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
+ *  JZ4740 SoC NAND controller driver
+ *
+ *  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.
+ *
+ *  You should have received a copy of the  GNU General Public License along
+ *  with this program; if not, write  to the Free Software Foundation, Inc.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifndef __ASM_MACH_JZ4740_JZ4740_NAND_H__
+#define __ASM_MACH_JZ4740_JZ4740_NAND_H__
+
+#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
+
+struct jz_nand_platform_data {
+	int			num_partitions;
+	struct mtd_partition	*partitions;
+
+	struct nand_ecclayout	*ecc_layout;
+
+	unsigned int busy_gpio;
+
+	void (*ident_callback)(struct platform_device *, struct nand_chip *,
+				struct mtd_partition **, int *num_partitions);
+};
+
+#endif

drivers/mtd/nand/Kconfig

@@ -526,4 +526,10 @@ config MTD_NAND_NUC900
 	  This enables the driver for the NAND Flash on evaluation board based
 	  on w90p910 / NUC9xx.
 
+config MTD_NAND_JZ4740
+	tristate "Support for JZ4740 SoC NAND controller"
+	depends on MACH_JZ4740
+	help
+		Enables support for NAND Flash on JZ4740 SoC based boards.
+
 endif # MTD_NAND

drivers/mtd/nand/Makefile

@@ -46,5 +46,6 @@ obj-$(CONFIG_MTD_NAND_NOMADIK)		+= nomadik_nand.o
 obj-$(CONFIG_MTD_NAND_BCM_UMI)		+= bcm_umi_nand.o nand_bcm_umi.o
 obj-$(CONFIG_MTD_NAND_MPC5121_NFC)	+= mpc5121_nfc.o
 obj-$(CONFIG_MTD_NAND_RICOH)		+= r852.o
+obj-$(CONFIG_MTD_NAND_JZ4740)		+= jz4740_nand.o
 
 nand-objs := nand_base.o nand_bbt.o