[ARM] S3C24XX: Add physmap device for all Simtec NOR equiped boards.

Move to using the physmap platform device code to attached NOR
flash on Simtec boards so that the old bast-flash driver can be
safely removed.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

6 files changed, 119 insertions, 36 deletions

diff --git a/arch/arm/mach-s3c2410/Kconfig b/arch/arm/mach-s3c2410/Kconfig
index 6968970..1a7d01b 100644
--- a/arch/arm/mach-s3c2410/Kconfig
+++ b/arch/arm/mach-s3c2410/Kconfig
@@ -37,6 +37,11 @@ config S3C2410_CLOCK
 	help
 	  Clock code for the S3C2410, and similar processors
 
+config SIMTEC_NOR
+	bool
+	help
+	  Internal node to specify machine has simtec NOR mapping
+
 config MACH_BAST_IDE
 	bool
 	select HAVE_PATA_PLATFORM
@@ -76,6 +81,7 @@ config ARCH_BAST
 	bool "Simtec Electronics BAST (EB2410ITX)"
 	select CPU_S3C2410
 	select PM_SIMTEC if PM
+	select SIMTEC_NOR
 	select MACH_BAST_IDE
 	select ISA
 	help
@@ -114,6 +120,7 @@ config MACH_TCT_HAMMER
 config MACH_VR1000
 	bool "Thorcom VR1000"
 	select PM_SIMTEC if PM
+	select SIMTEC_NOR
 	select MACH_BAST_IDE
 	select CPU_S3C2410
 	help
diff --git a/arch/arm/mach-s3c2410/Makefile b/arch/arm/mach-s3c2410/Makefile
index 8a4055d..00f31f8 100644
--- a/arch/arm/mach-s3c2410/Makefile
+++ b/arch/arm/mach-s3c2410/Makefile
@@ -31,6 +31,10 @@ obj-$(CONFIG_MACH_TCT_HAMMER)	+= mach-tct_hammer.o
 obj-$(CONFIG_MACH_VR1000)	+= mach-vr1000.o usb-simtec.o
 obj-$(CONFIG_MACH_QT2410)	+= mach-qt2410.o
 
+# Common bits of machine support
+
+obj-$(CONFIG_SIMTEC_NOR)	+= nor-simtec.o
+
 # machine additions
 
 obj-$(CONFIG_MACH_BAST_IDE)	+= bast-ide.o
diff --git a/arch/arm/mach-s3c2410/mach-bast.c b/arch/arm/mach-s3c2410/mach-bast.c
index 093be00..2a512e8 100644
--- a/arch/arm/mach-s3c2410/mach-bast.c
+++ b/arch/arm/mach-s3c2410/mach-bast.c
@@ -57,7 +57,9 @@
 #include <asm/plat-s3c24xx/clock.h>
 #include <asm/plat-s3c24xx/devs.h>
 #include <asm/plat-s3c24xx/cpu.h>
+
 #include "usb-simtec.h"
+#include "nor-simtec.h"
 
 #define COPYRIGHT ", (c) 2004-2005 Simtec Electronics"
 
@@ -203,23 +205,6 @@ static struct s3c2410_uartcfg bast_uartcfgs[] __initdata = {
 	}
 };
 
-/* NOR Flash on BAST board */
-
-static struct resource bast_nor_resource[] = {
-	[0] = {
-		.start = S3C2410_CS1 + 0x4000000,
-		.end   = S3C2410_CS1 + 0x4000000 + (32*1024*1024) - 1,
-		.flags = IORESOURCE_MEM,
-	}
-};
-
-static struct platform_device bast_device_nor = {
-	.name		= "bast-nor",
-	.id		= -1,
-	.num_resources	= ARRAY_SIZE(bast_nor_resource),
-	.resource	= bast_nor_resource,
-};
-
 /* NAND Flash on BAST board */
 
 #ifdef CONFIG_PM
@@ -559,7 +544,6 @@ static struct platform_device *bast_devices[] __initdata = {
 	&s3c_device_i2c,
  	&s3c_device_rtc,
 	&s3c_device_nand,
-	&bast_device_nor,
 	&bast_device_dm9k,
 	&bast_device_asix,
 	&bast_device_axpp,
@@ -608,6 +592,8 @@ static void __init bast_init(void)
 
 	s3c24xx_fb_set_platdata(&bast_fb_info);
 	platform_add_devices(bast_devices, ARRAY_SIZE(bast_devices));
+
+	nor_simtec_init();
 }
 
 MACHINE_START(BAST, "Simtec-BAST")
diff --git a/arch/arm/mach-s3c2410/mach-vr1000.c b/arch/arm/mach-s3c2410/mach-vr1000.c
index 1d0a028..f133ccfc 100644
--- a/arch/arm/mach-s3c2410/mach-vr1000.c
+++ b/arch/arm/mach-s3c2410/mach-vr1000.c
@@ -46,7 +46,9 @@
 #include <asm/plat-s3c24xx/clock.h>
 #include <asm/plat-s3c24xx/devs.h>
 #include <asm/plat-s3c24xx/cpu.h>
+
 #include "usb-simtec.h"
+#include "nor-simtec.h"
 
 /* macros for virtual address mods for the io space entries */
 #define VA_C5(item) ((unsigned long)(item) + BAST_VAM_CS5)
@@ -202,23 +204,6 @@ static struct platform_device serial_device = {
 	},
 };
 
-/* MTD NOR Flash */
-
-static struct resource vr1000_nor_resource[] = {
-	[0] = {
-		.start	= S3C2410_CS1 + 0x4000000,
-		.end	= S3C2410_CS1 + 0x4000000 + SZ_16M - 1,
-		.flags	= IORESOURCE_MEM,
-	}
-};
-
-static struct platform_device vr1000_nor = {
-	.name		= "bast-nor",
-	.id		= -1,
-	.num_resources	= ARRAY_SIZE(vr1000_nor_resource),
-	.resource	= vr1000_nor_resource,
-};
-
 /* DM9000 ethernet devices */
 
 static struct resource vr1000_dm9k0_resource[] = {
@@ -339,7 +324,6 @@ static struct platform_device *vr1000_devices[] __initdata = {
 	&s3c_device_i2c,
 	&s3c_device_adc,
 	&serial_device,
-	&vr1000_nor,
 	&vr1000_dm9k0,
 	&vr1000_dm9k1,
 	&vr1000_led1,
@@ -388,6 +372,8 @@ static void __init vr1000_map_io(void)
 static void __init vr1000_init(void)
 {
 	platform_add_devices(vr1000_devices, ARRAY_SIZE(vr1000_devices));
+
+	nor_simtec_init();
 }
 
 MACHINE_START(VR1000, "Thorcom-VR1000")
diff --git a/arch/arm/mach-s3c2410/nor-simtec.c b/arch/arm/mach-s3c2410/nor-simtec.c
new file mode 100644
index 0000000..f44e21b
--- /dev/null
+++ b/arch/arm/mach-s3c2410/nor-simtec.c
@@ -0,0 +1,86 @@
+/* linux/arch/arm/mach-s3c2410/nor-simtec.c
+ *
+ * Copyright (c) 2008 Simtec Electronics
+ *	http://armlinux.simtec.co.uk/
+ *	Ben Dooks <ben@simtec.co.uk>
+ *
+ * Simtec NOR mapping
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/physmap.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <asm/arch/map.h>
+#include <asm/arch/bast-map.h>
+#include <asm/arch/bast-cpld.h>
+
+
+static void simtec_nor_vpp(struct map_info *map, int vpp)
+{
+	unsigned int val;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	val = __raw_readb(BAST_VA_CTRL3);
+
+	printk(KERN_DEBUG "%s(%d)\n", __func__, vpp);
+
+	if (vpp)
+		val |= BAST_CPLD_CTRL3_ROMWEN;
+	else
+		val &= ~BAST_CPLD_CTRL3_ROMWEN;
+
+	__raw_writeb(val, BAST_VA_CTRL3);
+	local_irq_restore(flags);
+}
+
+struct physmap_flash_data simtec_nor_pdata = {
+	.width		= 2,
+	.set_vpp	= simtec_nor_vpp,
+	.nr_parts	= 0,
+};
+
+static struct resource simtec_nor_resource[] = {
+	[0] = {
+		.start = S3C2410_CS1 + 0x4000000,
+		.end   = S3C2410_CS1 + 0x4000000 + SZ_8M - 1,
+		.flags = IORESOURCE_MEM,
+	}
+};
+
+static struct platform_device simtec_device_nor = {
+	.name		= "physmap-flash",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(simtec_nor_resource),
+	.resource	= simtec_nor_resource,
+	.dev		= {
+		.platform_data = &simtec_nor_pdata,
+	},
+};
+
+void __init nor_simtec_init(void)
+{
+	int ret;
+
+	ret = platform_device_register(&simtec_device_nor);
+	if (ret < 0)
+		printk(KERN_ERR "failed to register physmap-flash device\n");
+	else
+		simtec_nor_vpp(NULL, 1);
+}
diff --git a/arch/arm/mach-s3c2410/nor-simtec.h b/arch/arm/mach-s3c2410/nor-simtec.h
new file mode 100644
index 0000000..f619c1e
--- /dev/null
+++ b/arch/arm/mach-s3c2410/nor-simtec.h
@@ -0,0 +1,14 @@
+/* linux/arch/arm/mach-s3c2410/nor-simtec.h
+ *
+ * Copyright (c) 2008 Simtec Electronics
+ *	http://armlinux.simtec.co.uk/
+ *	Ben Dooks <ben@simtec.co.uk>
+ *
+ * Simtec NOR mapping
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+extern void nor_simtec_init(void);