[ARM] pxa/vpac270: add ide support

This patch adds support for the on-board IDE channel. I tested this with a CDROM
connected over 2.5-3.5 IDE reduction with external power supplied to the CDROM.
This was not tested with the Voipac 270-HDD-000 (official Voipac HDD module),
but I expect no problems.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

arch/arm/mach-pxa/Kconfig

@@ -252,6 +252,7 @@ config MACH_COLIBRI320
 config MACH_VPAC270
 	bool "Voipac PXA270"
 	select PXA27x
+	select HAVE_PATA_PLATFORM
 	help
 	  PXA270 based Single Board Computer.
 

arch/arm/mach-pxa/include/mach/vpac270.h

@@ -35,4 +35,6 @@
 
 #define	GPIO114_VPAC270_ETH_IRQ		114
 
+#define	GPIO36_VPAC270_IDE_IRQ		36
+
 #endif

arch/arm/mach-pxa/vpac270.c

@@ -23,6 +23,7 @@
 #include <linux/mtd/physmap.h>
 #include <linux/dm9000.h>
 #include <linux/ucb1400.h>
+#include <linux/ata_platform.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -138,6 +139,10 @@ static unsigned long vpac270_pin_config[] __initdata = {
 	/* I2C */
 	GPIO117_I2C_SCL,
 	GPIO118_I2C_SDA,
+
+	/* IDE */
+	GPIO36_GPIO,	/* IDE IRQ */
+	GPIO80_DREQ_1,
 };
 
 /******************************************************************************
@@ -486,6 +491,50 @@ static void __init vpac270_lcd_init(void)
 static inline void vpac270_lcd_init(void) {}
 #endif
 
+/******************************************************************************
+ * PATA IDE
+ ******************************************************************************/
+#if defined(CONFIG_PATA_PLATFORM) || defined(CONFIG_PATA_PLATFORM_MODULE)
+static struct pata_platform_info vpac270_pata_pdata = {
+	.ioport_shift	= 1,
+	.irq_flags	= IRQF_TRIGGER_RISING,
+};
+
+static struct resource vpac270_ide_resources[] = {
+	[0] = {	/* I/O Base address */
+	       .start	= PXA_CS3_PHYS + 0x120,
+	       .end	= PXA_CS3_PHYS + 0x13f,
+	       .flags	= IORESOURCE_MEM
+	},
+	[1] = {	/* CTL Base address */
+	       .start	= PXA_CS3_PHYS + 0x15c,
+	       .end	= PXA_CS3_PHYS + 0x15f,
+	       .flags	= IORESOURCE_MEM
+	},
+	[2] = {	/* IDE IRQ pin */
+	       .start	= gpio_to_irq(GPIO36_VPAC270_IDE_IRQ),
+	       .end	= gpio_to_irq(GPIO36_VPAC270_IDE_IRQ),
+	       .flags	= IORESOURCE_IRQ
+	}
+};
+
+static struct platform_device vpac270_ide_device = {
+	.name		= "pata_platform",
+	.num_resources	= ARRAY_SIZE(vpac270_ide_resources),
+	.resource	= vpac270_ide_resources,
+	.dev		= {
+		.platform_data	= &vpac270_pata_pdata,
+	}
+};
+
+static void __init vpac270_ide_init(void)
+{
+	platform_device_register(&vpac270_ide_device);
+}
+#else
+static inline void vpac270_ide_init(void) {}
+#endif
+
 /******************************************************************************
  * Machine init
  ******************************************************************************/
@@ -507,6 +556,7 @@ static void __init vpac270_init(void)
 	vpac270_eth_init();
 	vpac270_ts_init();
 	vpac270_rtc_init();
+	vpac270_ide_init();
 }
 
 MACHINE_START(VPAC270, "Voipac PXA270")