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>

1 files changed, 70 insertions, 0 deletions

diff --git a/arch/arm/plat-samsung/dev-i2c2.c b/arch/arm/plat-samsung/dev-i2c2.c
new file mode 100644
index 000000000000..07036dee09e7
--- /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;
+}