[ARM] pxa: mmc: add 3rd host controller support for pxa310

This patch is to add the third mmc controller support _only_
for pxa310.

On zylonite, the third controller support one slot.
Signed-off-by: Bridge Wu <bridge.wu@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-pxa/devices.c

@@ -589,4 +589,43 @@ void __init pxa3xx_set_mci2_info(struct pxamci_platform_data *info)
 	pxa_register_device(&pxa3xx_device_mci2, info);
 }
 
+static struct resource pxa3xx_resources_mci3[] = {
+	[0] = {
+		.start	= 0x42500000,
+		.end	= 0x42500fff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= IRQ_MMC3,
+		.end	= IRQ_MMC3,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= 100,
+		.end	= 100,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= 101,
+		.end	= 101,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+struct platform_device pxa3xx_device_mci3 = {
+	.name		= "pxa2xx-mci",
+	.id		= 2,
+	.dev		= {
+		.dma_mask = &pxamci_dmamask,
+		.coherent_dma_mask = 0xffffffff,
+	},
+	.num_resources	= ARRAY_SIZE(pxa3xx_resources_mci3),
+	.resource	= pxa3xx_resources_mci3,
+};
+
+void __init pxa3xx_set_mci3_info(struct pxamci_platform_data *info)
+{
+	pxa_register_device(&pxa3xx_device_mci3, info);
+}
+
 #endif /* CONFIG_PXA3xx */

arch/arm/mach-pxa/devices.h

 extern struct platform_device pxa_device_mci;
 extern struct platform_device pxa3xx_device_mci2;
+extern struct platform_device pxa3xx_device_mci3;
 extern struct platform_device pxa_device_udc;
 extern struct platform_device pxa_device_fb;
 extern struct platform_device pxa_device_ffuart;

arch/arm/mach-pxa/pxa3xx.c

@@ -197,6 +197,7 @@ static struct clk pxa3xx_clks[] = {
 
 	PXA3xx_CKEN("MMCCLK", MMC1, 19500000, 0, &pxa_device_mci.dev),
 	PXA3xx_CKEN("MMCCLK", MMC2, 19500000, 0, &pxa3xx_device_mci2.dev),
+	PXA3xx_CKEN("MMCCLK", MMC3, 19500000, 0, &pxa3xx_device_mci3.dev),
 };
 
 void __init pxa3xx_init_irq(void)

arch/arm/mach-pxa/zylonite.c

@@ -29,7 +29,7 @@
 
 #include "generic.h"
 
-#define MAX_SLOTS	2
+#define MAX_SLOTS	3
 struct platform_mmc_slot zylonite_mmc_slot[MAX_SLOTS];
 
 int gpio_backlight;
@@ -242,6 +242,8 @@ static void __init zylonite_init_mmc(void)
 {
 	pxa_set_mci_info(&zylonite_mci_platform_data);
 	pxa3xx_set_mci2_info(&zylonite_mci2_platform_data);
+	if (cpu_is_pxa310())
+		pxa3xx_set_mci3_info(&zylonite_mci_platform_data);
 }
 #else
 static inline void zylonite_init_mmc(void) {}

arch/arm/mach-pxa/zylonite_pxa300.c

@@ -133,6 +133,14 @@ static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
 	/* Ethernet */
 	GPIO2_nCS3,
 	GPIO102_GPIO,
+
+	/* MMC3 */
+	GPIO7_2_MMC3_DAT0,
+	GPIO8_2_MMC3_DAT1,
+	GPIO9_2_MMC3_DAT2,
+	GPIO10_2_MMC3_DAT3,
+	GPIO103_MMC3_CLK,
+	GPIO105_MMC3_CMD,
 };
 
 #define NUM_LCD_DETECT_PINS	7
@@ -205,5 +213,9 @@ void __init zylonite_pxa300_init(void)
 	if (cpu_is_pxa310()) {
 		pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
 		gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);
+
+		/* MMC card detect & write protect for controller 2 */
+		zylonite_mmc_slot[2].gpio_cd = EXT_GPIO(30);
+		zylonite_mmc_slot[2].gpio_wp = EXT_GPIO(31);
 	}
 }

include/asm-arm/arch-pxa/mmc.h

@@ -18,5 +18,6 @@ struct pxamci_platform_data {
 
 extern void pxa_set_mci_info(struct pxamci_platform_data *info);
 extern void pxa3xx_set_mci2_info(struct pxamci_platform_data *info);
+extern void pxa3xx_set_mci3_info(struct pxamci_platform_data *info);
 
 #endif