[PATCH] Exynos4: Add HSMMC channel 4 support

[Kyungmin Park]

From: Kyungmin Park <kyungmin.park at samsung.com>

Exynos4 has the DesignWare Host controller at channel 4.

Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
diff --git a/arch/arm/mach-exynos4/include/mach/irqs.h b/arch/arm/mach-exynos4/include/mach/irqs.h
index 2dc5900..aa32679 100644
--- a/arch/arm/mach-exynos4/include/mach/irqs.h
+++ b/arch/arm/mach-exynos4/include/mach/irqs.h
@@ -104,6 +104,7 @@
 #define IRQ_HSMMC1		COMBINER_IRQ(29, 1)
 #define IRQ_HSMMC2		COMBINER_IRQ(29, 2)
 #define IRQ_HSMMC3		COMBINER_IRQ(29, 3)
+#define IRQ_HSMMC4		COMBINER_IRQ(29, 4)
 
 #define IRQ_MIPI_CSIS0		COMBINER_IRQ(30, 0)
 #define IRQ_MIPI_CSIS1		COMBINER_IRQ(30, 1)
diff --git a/arch/arm/mach-exynos4/include/mach/map.h b/arch/arm/mach-exynos4/include/mach/map.h
index 80a41e0..ea79962 100644
--- a/arch/arm/mach-exynos4/include/mach/map.h
+++ b/arch/arm/mach-exynos4/include/mach/map.h
@@ -107,6 +107,7 @@
 #define S3C_PA_HSMMC1			EXYNOS4_PA_HSMMC(1)
 #define S3C_PA_HSMMC2			EXYNOS4_PA_HSMMC(2)
 #define S3C_PA_HSMMC3			EXYNOS4_PA_HSMMC(3)
+#define S3C_PA_HSMMC4			EXYNOS4_PA_HSMMC(4)
 #define S3C_PA_IIC			EXYNOS4_PA_IIC(0)
 #define S3C_PA_IIC1			EXYNOS4_PA_IIC(1)
 #define S3C_PA_IIC2			EXYNOS4_PA_IIC(2)
diff --git a/arch/arm/plat-samsung/Kconfig b/arch/arm/plat-samsung/Kconfig
index be72100..f816985 100644
--- a/arch/arm/plat-samsung/Kconfig
+++ b/arch/arm/plat-samsung/Kconfig
@@ -171,6 +171,11 @@ config S3C_DEV_HSMMC3
 	help
 	  Compile in platform device definitions for HSMMC channel 3
 
+config S3C_DEV_HSMMC4
+	bool
+	help
+	  Compile in platform device definitions for HSMMC channel 4
+
 config S3C_DEV_HWMON
 	bool
 	help
diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile
index e9de58a..7ddba03 100644
--- a/arch/arm/plat-samsung/Makefile
+++ b/arch/arm/plat-samsung/Makefile
@@ -37,6 +37,7 @@ obj-$(CONFIG_S3C_DEV_HSMMC)	+= dev-hsmmc.o
 obj-$(CONFIG_S3C_DEV_HSMMC1)	+= dev-hsmmc1.o
 obj-$(CONFIG_S3C_DEV_HSMMC2)	+= dev-hsmmc2.o
 obj-$(CONFIG_S3C_DEV_HSMMC3)	+= dev-hsmmc3.o
+obj-$(CONFIG_S3C_DEV_HSMMC4)	+= dev-hsmmc4.o
 obj-$(CONFIG_S3C_DEV_HWMON)	+= dev-hwmon.o
 obj-y				+= dev-i2c0.o
 obj-$(CONFIG_S3C_DEV_I2C1)	+= dev-i2c1.o
diff --git a/arch/arm/plat-samsung/dev-hsmmc4.c b/arch/arm/plat-samsung/dev-hsmmc4.c
new file mode 100644
index 0000000..c69a78f
--- /dev/null
+++ b/arch/arm/plat-samsung/dev-hsmmc4.c
@@ -0,0 +1,54 @@
+/* linux/arch/arm/plat-samsung/dev-hsmmc4.c
+ *
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd.
+ *
+ * Samsung device definition for hsmmc device 4
+ *
+ * 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/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/dw_mmc.h>
+#include <linux/dma-mapping.h>
+
+#include <mach/map.h>
+#include <plat/sdhci.h>
+#include <plat/devs.h>
+
+#define S3C_SZ_HSMMC		0x1000
+
+static struct resource s3c_hsmmc4_resource[] = {
+	[0] = {
+		.start	= S3C_PA_HSMMC4,
+		.end	= S3C_PA_HSMMC4 + S3C_SZ_HSMMC - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= IRQ_HSMMC4,
+		.end	= IRQ_HSMMC4,
+		.flags	= IORESOURCE_IRQ,
+	}
+};
+
+static u64 s3c_device_hsmmc4_dmamask = DMA_BIT_MASK(32);
+
+struct platform_device s3c_device_hsmmc4 = {
+	.name			= "dw_mmc",
+	.id			= -1,
+	.num_resources		= ARRAY_SIZE(s3c_hsmmc4_resource),
+	.resource		= s3c_hsmmc4_resource,
+	.dev			= {
+		.dma_mask		= &s3c_device_hsmmc4_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+	},
+};
+
+void s3c_hsmmc4_set_platdata(struct dw_mci_board *pdata)
+{
+	s3c_set_platdata(pdata, sizeof(struct dw_mci_board),
+			 &s3c_device_hsmmc4);
+}
diff --git a/arch/arm/plat-samsung/include/plat/devs.h b/arch/arm/plat-samsung/include/plat/devs.h
index e2b3ab9..4e198ba 100644
--- a/arch/arm/plat-samsung/include/plat/devs.h
+++ b/arch/arm/plat-samsung/include/plat/devs.h
@@ -65,6 +65,7 @@ extern struct platform_device s3c_device_hsmmc0;
 extern struct platform_device s3c_device_hsmmc1;
 extern struct platform_device s3c_device_hsmmc2;
 extern struct platform_device s3c_device_hsmmc3;
+extern struct platform_device s3c_device_hsmmc4;
 extern struct platform_device s3c_device_cfcon;
 
 extern struct platform_device s3c_device_spi0;