ARM: S5PV210: add common I2C device helpers

This patch adds I2C platform helpers required by s3c2440-i2c driver.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

6 files changed, 86 insertions, 0 deletions

diff --git a/arch/arm/plat-samsung/Kconfig b/arch/arm/plat-samsung/Kconfig
index 229919e9744..5b328e9e2bc 100644
--- a/arch/arm/plat-samsung/Kconfig
+++ b/arch/arm/plat-samsung/Kconfig
@@ -170,6 +170,11 @@ config S3C_DEV_I2C1
 	help
 	  Compile in platform device definitions for I2C channel 1
 
+config S3C_DEV_I2C2
+	bool
+	help
+	  Compile in platform device definitions for I2C channel 2
+
 config S3C_DEV_FB
 	bool
 	help
diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile
index 48288499a3b..606ec8424c8 100644
--- a/arch/arm/plat-samsung/Makefile
+++ b/arch/arm/plat-samsung/Makefile
@@ -36,6 +36,7 @@ obj-$(CONFIG_S3C_DEV_HSMMC2)	+= dev-hsmmc2.o
 obj-$(CONFIG_S3C_DEV_HWMON)	+= dev-hwmon.o
 obj-y				+= dev-i2c0.o
 obj-$(CONFIG_S3C_DEV_I2C1)	+= dev-i2c1.o
+obj-$(CONFIG_S3C_DEV_I2C2)	+= dev-i2c2.o
 obj-$(CONFIG_S3C_DEV_FB)	+= dev-fb.o
 obj-y				+= dev-uart.o
 obj-$(CONFIG_S3C_DEV_USB_HOST)	+= dev-usb.o
diff --git a/arch/arm/plat-samsung/dev-i2c2.c b/arch/arm/plat-samsung/dev-i2c2.c
new file mode 100644
index 00000000000..07036dee09e
--- /dev/null
+++ b/arch/arm/plat-samsung/dev-i2c2.c
@@ -0,0 +1,70 @@
+/* linux/arch/arm/plat-s3c/dev-i2c2.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * S3C series device definition for i2c device 2
+ *
+ * Based on plat-samsung/dev-i2c0.c
+ *
+ * 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/gfp.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/platform_device.h>
+
+#include <mach/irqs.h>
+#include <mach/map.h>
+
+#include <plat/regs-iic.h>
+#include <plat/iic.h>
+#include <plat/devs.h>
+#include <plat/cpu.h>
+
+static struct resource s3c_i2c_resource[] = {
+	[0] = {
+		.start = S3C_PA_IIC2,
+		.end   = S3C_PA_IIC2 + SZ_4K - 1,
+		.flags = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start = IRQ_CAN0,
+		.end   = IRQ_CAN0,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+struct platform_device s3c_device_i2c2 = {
+	.name		  = "s3c2410-i2c",
+	.id		  = 2,
+	.num_resources	  = ARRAY_SIZE(s3c_i2c_resource),
+	.resource	  = s3c_i2c_resource,
+};
+
+static struct s3c2410_platform_i2c default_i2c_data2 __initdata = {
+	.flags		= 0,
+	.bus_num	= 2,
+	.slave_addr	= 0x10,
+	.frequency	= 100*1000,
+	.sda_delay	= 100,
+};
+
+void __init s3c_i2c2_set_platdata(struct s3c2410_platform_i2c *pd)
+{
+	struct s3c2410_platform_i2c *npd;
+
+	if (!pd)
+		pd = &default_i2c_data2;
+
+	npd = kmemdup(pd, sizeof(struct s3c2410_platform_i2c), GFP_KERNEL);
+	if (!npd)
+		printk(KERN_ERR "%s: no memory for platform data\n", __func__);
+	else if (!npd->cfg_gpio)
+		npd->cfg_gpio = s3c_i2c2_cfg_gpio;
+
+	s3c_device_i2c2.dev.platform_data = npd;
+}
diff --git a/arch/arm/plat-samsung/include/plat/devs.h b/arch/arm/plat-samsung/include/plat/devs.h
index ef69e56b288..78d24202f4e 100644
--- a/arch/arm/plat-samsung/include/plat/devs.h
+++ b/arch/arm/plat-samsung/include/plat/devs.h
@@ -45,6 +45,7 @@ extern struct platform_device s3c_device_lcd;
 extern struct platform_device s3c_device_wdt;
 extern struct platform_device s3c_device_i2c0;
 extern struct platform_device s3c_device_i2c1;
+extern struct platform_device s3c_device_i2c2;
 extern struct platform_device s3c_device_rtc;
 extern struct platform_device s3c_device_adc;
 extern struct platform_device s3c_device_sdi;
diff --git a/arch/arm/plat-samsung/include/plat/iic-core.h b/arch/arm/plat-samsung/include/plat/iic-core.h
index 36397ca2096..f182669b8e8 100644
--- a/arch/arm/plat-samsung/include/plat/iic-core.h
+++ b/arch/arm/plat-samsung/include/plat/iic-core.h
@@ -32,4 +32,11 @@ static inline void s3c_i2c1_setname(char *name)
 #endif
 }
 
+static inline void s3c_i2c2_setname(char *name)
+{
+#ifdef CONFIG_S3C_DEV_I2C2
+	s3c_device_i2c2.name = name;
+#endif
+}
+
 #endif /* __ASM_ARCH_IIC_H */
diff --git a/arch/arm/plat-samsung/include/plat/iic.h b/arch/arm/plat-samsung/include/plat/iic.h
index 3083df00dee..133308bf595 100644
--- a/arch/arm/plat-samsung/include/plat/iic.h
+++ b/arch/arm/plat-samsung/include/plat/iic.h
@@ -54,9 +54,11 @@ struct s3c2410_platform_i2c {
  */
 extern void s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *i2c);
 extern void s3c_i2c1_set_platdata(struct s3c2410_platform_i2c *i2c);
+extern void s3c_i2c2_set_platdata(struct s3c2410_platform_i2c *i2c);
 
 /* defined by architecture to configure gpio */
 extern void s3c_i2c0_cfg_gpio(struct platform_device *dev);
 extern void s3c_i2c1_cfg_gpio(struct platform_device *dev);
+extern void s3c_i2c2_cfg_gpio(struct platform_device *dev);
 
 #endif /* __ASM_ARCH_IIC_H */