[PATCH v2] ARM: EXYNOS4: Add platform device for dwmci driver.

[tgih.jun@samsung.com (Seungwon Jeon)]

This patch add platform devices for Synopsys DesignWare Multimedia Card
Interface driver.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
---
 arch/arm/mach-exynos4/Kconfig             |   12 ++++
 arch/arm/mach-exynos4/Makefile            |    1 +
 arch/arm/mach-exynos4/dev-dwmci.c         |   88 +++++++++++++++++++++++++++++
 arch/arm/mach-exynos4/include/mach/irqs.h |    1 +
 arch/arm/mach-exynos4/include/mach/map.h  |    1 +
 arch/arm/plat-samsung/include/plat/devs.h |    1 +
 6 files changed, 104 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/mach-exynos4/dev-dwmci.c

diff --git a/arch/arm/mach-exynos4/Kconfig b/arch/arm/mach-exynos4/Kconfig
index 5115b90..2ec5b96 100644
--- a/arch/arm/mach-exynos4/Kconfig
+++ b/arch/arm/mach-exynos4/Kconfig
@@ -35,6 +35,11 @@ config EXYNOS4_DEV_SYSMMU
 	help
 	  Common setup code for SYSTEM MMU in EXYNOS4
 
+config EXYNOS4_DEV_DWMCI
+	bool
+	help
+	  Compile in platform device definitions for DWMCI
+
 config EXYNOS4_SETUP_I2C1
 	bool
 	help
@@ -200,6 +205,13 @@ comment "Configuration for HSMMC bus width"
 
 menu "Use 8-bit bus width"
 
+config EXYNOS4_DWMCI_8BIT
+	bool "DWMCI with 8-bit bus"
+	depends on EXYNOS4_DEV_DWMCI
+	help
+	  Support DWMCI 8-bit bus.
+	  If selected, Channel 1 is disabled.
+
 config EXYNOS4_SDHCI_CH0_8BIT
 	bool "Channel 0 with 8-bit bus"
 	help
diff --git a/arch/arm/mach-exynos4/Makefile b/arch/arm/mach-exynos4/Makefile
index 60fe5ec..eeeaada 100644
--- a/arch/arm/mach-exynos4/Makefile
+++ b/arch/arm/mach-exynos4/Makefile
@@ -43,6 +43,7 @@ obj-y					+= dev-audio.o
 obj-$(CONFIG_EXYNOS4_DEV_AHCI)		+= dev-ahci.o
 obj-$(CONFIG_EXYNOS4_DEV_PD)		+= dev-pd.o
 obj-$(CONFIG_EXYNOS4_DEV_SYSMMU)	+= dev-sysmmu.o
+obj-$(CONFIG_EXYNOS4_DEV_DWMCI)	+= dev-dwmci.o
 
 obj-$(CONFIG_EXYNOS4_SETUP_FIMC)	+= setup-fimc.o
 obj-$(CONFIG_EXYNOS4_SETUP_I2C1)	+= setup-i2c1.o
diff --git a/arch/arm/mach-exynos4/dev-dwmci.c b/arch/arm/mach-exynos4/dev-dwmci.c
new file mode 100644
index 0000000..a0defa4
--- /dev/null
+++ b/arch/arm/mach-exynos4/dev-dwmci.c
@@ -0,0 +1,88 @@
+/*
+ * linuxarch/arm/mach-exynos4/dev-dwmci.c
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com
+ *
+ * Platform device for Synopsys DesignWare Mobile Storage IP
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/mmc/dw_mmc.h>
+#include <linux/mmc/host.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+
+#include <plat/devs.h>
+#include <plat/cpu.h>
+#include <plat/gpio-cfg.h>
+
+#include <mach/map.h>
+
+#ifdef EXYNOS4_DWMCI_8BIT
+#define BUS_WIDTH 8
+#else
+#define BUS_WIDTH 4
+#endif
+
+static int exynos4_dwmci_get_ocr(u32 slot_id)
+{
+	return MMC_VDD_32_33 | MMC_VDD_33_34;
+}
+
+static int exynos4_dwmci_get_bus_wd(u32 slot_id)
+{
+	return BUS_WIDTH;
+}
+
+static int exynos4_dwmci_init(u32 slot_id, irq_handler_t handler, void *data)
+{
+	return 0;
+}
+
+static struct resource exynos4_dwmci_resource[] = {
+	[0] = {
+		.start = EXYNOS4_PA_DWMCI,
+		.end   = EXYNOS4_PA_DWMCI + SZ_4K - 1,
+		.flags = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start = IRQ_DWMCI,
+		.end   = IRQ_DWMCI,
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+static struct dw_mci_board exynos4_dwci_pdata = {
+	.num_slots			= 1,
+	.quirks				= DW_MCI_QUIRK_BROKEN_CARD_DETECTION,
+	.bus_hz				= 80*1000*1000,
+	.detect_delay_ms	= 200,
+	.init				= exynos4_dwmci_init,
+	.get_ocr			= exynos4_dwmci_get_ocr,
+	.get_bus_wd			= exynos4_dwmci_get_bus_wd,
+	.select_slot		= NULL,
+};
+
+static u64 exynos4_dwmci_dmamask = DMA_BIT_MASK(32);
+
+struct platform_device exynos4_device_dwmci = {
+	.name		= "dw_mmc",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(exynos4_dwmci_resource),
+	.resource	= exynos4_dwmci_resource,
+	.dev		= {
+		.dma_mask		= &exynos4_dwmci_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+		.platform_data	= &exynos4_dwci_pdata,
+	},
+};
+
diff --git a/arch/arm/mach-exynos4/include/mach/irqs.h b/arch/arm/mach-exynos4/include/mach/irqs.h
index 5d03730..b720246 100644
--- a/arch/arm/mach-exynos4/include/mach/irqs.h
+++ b/arch/arm/mach-exynos4/include/mach/irqs.h
@@ -107,6 +107,7 @@
 #define IRQ_HSMMC1		COMBINER_IRQ(29, 1)
 #define IRQ_HSMMC2		COMBINER_IRQ(29, 2)
 #define IRQ_HSMMC3		COMBINER_IRQ(29, 3)
+#define IRQ_DWMCI		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 0009e77..352e500 100644
--- a/arch/arm/mach-exynos4/include/mach/map.h
+++ b/arch/arm/mach-exynos4/include/mach/map.h
@@ -94,6 +94,7 @@
 #define EXYNOS4_PA_MIPI_CSIS1		0x11890000
 
 #define EXYNOS4_PA_HSMMC(x)		(0x12510000 + ((x) * 0x10000))
+#define EXYNOS4_PA_DWMCI		0x12550000
 
 #define EXYNOS4_PA_SATA			0x12560000
 #define EXYNOS4_PA_SATAPHY		0x125D0000
diff --git a/arch/arm/plat-samsung/include/plat/devs.h b/arch/arm/plat-samsung/include/plat/devs.h
index e3b31c2..29fa1cf 100644
--- a/arch/arm/plat-samsung/include/plat/devs.h
+++ b/arch/arm/plat-samsung/include/plat/devs.h
@@ -112,6 +112,7 @@ extern struct platform_device exynos4_device_i2s2;
 extern struct platform_device exynos4_device_spdif;
 extern struct platform_device exynos4_device_pd[];
 extern struct platform_device exynos4_device_ahci;
+extern struct platform_device exynos4_device_dwmci;
 
 extern struct platform_device s5p6440_device_pcm;
 extern struct platform_device s5p6440_device_iis;
-- 
1.7.2.3