[ARM] 3087/1: PXA2xx flash platform device conversion

Patch from Todd Poynor

Add platform devices for flash to Lubbock and Mainstone board files.
Once in place, the two existing mtd map drivers for the boards will be
converted to use a single pxa2xx map driver in the linux-mtd tree.
Take 4: flash_platform_data .map_name vs. .name cleaned up, resync with
merged irda patch context.

Signed-off-by: Todd Poynor <tpoynor@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 88 insertions, 2 deletions

diff --git a/arch/arm/mach-pxa/mainstone.c b/arch/arm/mach-pxa/mainstone.c
index 887a8cb7b721..07892f4012d8 100644
--- a/arch/arm/mach-pxa/mainstone.c
+++ b/arch/arm/mach-pxa/mainstone.c
@@ -20,6 +20,9 @@
 #include <linux/sched.h>
 #include <linux/bitops.h>
 #include <linux/fb.h>
+#include <linux/ioport.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
 
 #include <asm/types.h>
 #include <asm/setup.h>
@@ -27,10 +30,12 @@
 #include <asm/mach-types.h>
 #include <asm/hardware.h>
 #include <asm/irq.h>
+#include <asm/sizes.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 #include <asm/mach/irq.h>
+#include <asm/mach/flash.h>
 
 #include <asm/arch/pxa-regs.h>
 #include <asm/arch/mainstone.h>
@@ -190,6 +195,69 @@ static struct platform_device mst_audio_device = {
         .dev            = { .platform_data = &mst_audio_ops },
 };
 
+static struct resource flash_resources[] = {
+        [0] = {
+                .start  = PXA_CS0_PHYS,
+                .end    = PXA_CS0_PHYS + SZ_64M - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = PXA_CS1_PHYS,
+                .end    = PXA_CS1_PHYS + SZ_64M - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+};
+
+static struct mtd_partition mainstoneflash0_partitions[] = {
+        {
+                .name =         "Bootloader",
+                .size =         0x00040000,
+                .offset =       0,
+                .mask_flags =   MTD_WRITEABLE  /* force read-only */
+        },{
+                .name =         "Kernel",
+                .size =         0x00400000,
+                .offset =       0x00040000,
+        },{
+                .name =         "Filesystem",
+                .size =         MTDPART_SIZ_FULL,
+                .offset =       0x00440000
+        }
+};
+
+static struct flash_platform_data mst_flash_data[2] = {
+        {
+                .map_name       = "cfi_probe",
+                .parts          = mainstoneflash0_partitions,
+                .nr_parts       = ARRAY_SIZE(mainstoneflash0_partitions),
+        }, {
+                .map_name       = "cfi_probe",
+                .parts          = NULL,
+                .nr_parts       = 0,
+        }
+};
+
+static struct platform_device mst_flash_device[2] = {
+        {
+                .name           = "pxa2xx-flash",
+                .id             = 0,
+                .dev = {
+                        .platform_data = &mst_flash_data[0],
+                },
+                .resource = &flash_resources[0],
+                .num_resources = 1,
+        },
+        {
+                .name           = "pxa2xx-flash",
+                .id             = 1,
+                .dev = {
+                        .platform_data = &mst_flash_data[1],
+                },
+                .resource = &flash_resources[1],
+                .num_resources = 1,
+        },
+};
+
 static void mainstone_backlight_power(int on)
 {
         if (on) {
@@ -318,16 +386,34 @@ static struct pxaficp_platform_data mainstone_ficp_platform_data = {
         .transceiver_mode = mainstone_irda_transceiver_mode,
 };
 
+static struct platform_device *platform_devices[] __initdata = {
+        &smc91x_device,
+        &mst_audio_device,
+        &mst_flash_device[0],
+        &mst_flash_device[1],
+};
+
 static void __init mainstone_init(void)
 {
+        int SW7 = 0;  /* FIXME: get from SCR (Mst doc section 3.2.1.1) */
+
+        mst_flash_data[0].width = (BOOT_DEF & 1) ? 2 : 4;
+        mst_flash_data[1].width = 4;
+
+        /* Compensate for SW7 which swaps the flash banks */
+        mst_flash_data[SW7].name = "processor-flash";
+        mst_flash_data[SW7 ^ 1].name = "mainboard-flash";
+
+        printk(KERN_NOTICE "Mainstone configured to boot from %s\n",
+               mst_flash_data[0].name);
+
         /*
          * On Mainstone, we route AC97_SYSCLK via GPIO45 to
          * the audio daughter card
          */
         pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
 
-        platform_device_register(&smc91x_device);
-        platform_device_register(&mst_audio_device);
+        platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 
         /* reading Mainstone's "Virtual Configuration Register"
            might be handy to select LCD type here */