[ARM] S3C: Make i2c device definition common to plat-s3c

Make the device i2c0 common to plat-s3c and move the
definitions from arch/arm/plat-s3c24xx/devs.c

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

4 files changed, 91 insertions, 1 deletions

diff --git a/arch/arm/plat-s3c/Makefile b/arch/arm/plat-s3c/Makefile
index 3f6544a95fe8..187fa95b87d5 100644
--- a/arch/arm/plat-s3c/Makefile
+++ b/arch/arm/plat-s3c/Makefile
@@ -22,3 +22,4 @@ obj-y				+= gpio-config.o
 
 obj-$(CONFIG_S3C_DEV_HSMMC)     += dev-hsmmc.o
 obj-$(CONFIG_S3C_DEV_HSMMC1)    += dev-hsmmc1.o
+obj-y                           += dev-i2c0.o
diff --git a/arch/arm/plat-s3c/dev-i2c0.c b/arch/arm/plat-s3c/dev-i2c0.c
new file mode 100644
index 000000000000..21870fd2ec98
--- /dev/null
+++ b/arch/arm/plat-s3c/dev-i2c0.c
@@ -0,0 +1,67 @@
+/* linux/arch/arm/plat-s3c/dev-i2c0.c
+ *
+ * Copyright 2008 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *      http://armlinux.simtec.co.uk/
+ *
+ * S3C series device definition for i2c device 0
+ *
+ * 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/string.h>
+#include <linux/platform_device.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_IIC,
+                .end   = S3C_PA_IIC + SZ_4K - 1,
+                .flags = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start = IRQ_IIC,
+                .end   = IRQ_IIC,
+                .flags = IORESOURCE_IRQ,
+        },
+};
+
+struct platform_device s3c_device_i2c0 = {
+        .name             = "s3c2410-i2c",
+        .id               = -1,
+        .num_resources    = ARRAY_SIZE(s3c_i2c_resource),
+        .resource         = s3c_i2c_resource,
+};
+
+struct s3c2410_platform_i2c default_i2c_data __initdata = {
+        .flags          = 0,
+        .slave_addr     = 0x10,
+        .bus_freq       = 100*1000,
+        .max_freq       = 400*1000,
+        .sda_delay      = S3C2410_IICLC_SDA_DELAY5 | S3C2410_IICLC_FILTER_ON,
+};
+
+void __init s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *pd)
+{
+        struct s3c2410_platform_i2c *npd;
+
+        if (!pd)
+                pd = &default_i2c_data;
+
+        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_i2c0_cfg_gpio;
+
+        s3c_device_i2c0.dev.platform_data = npd;
+}
diff --git a/arch/arm/plat-s3c/include/plat/devs.h b/arch/arm/plat-s3c/include/plat/devs.h
index f173863b8cc7..d9e0c543ebd6 100644
--- a/arch/arm/plat-s3c/include/plat/devs.h
+++ b/arch/arm/plat-s3c/include/plat/devs.h
@@ -27,7 +27,7 @@ extern struct platform_device s3c_device_timer[];
 extern struct platform_device s3c_device_usb;
 extern struct platform_device s3c_device_lcd;
 extern struct platform_device s3c_device_wdt;
-extern struct platform_device s3c_device_i2c;
+extern struct platform_device s3c_device_i2c0;
 extern struct platform_device s3c_device_iis;
 extern struct platform_device s3c_device_rtc;
 extern struct platform_device s3c_device_adc;
diff --git a/arch/arm/plat-s3c/include/plat/iic.h b/arch/arm/plat-s3c/include/plat/iic.h
index 5106acaa1d0e..5073b1e74ee8 100644
--- a/arch/arm/plat-s3c/include/plat/iic.h
+++ b/arch/arm/plat-s3c/include/plat/iic.h
@@ -28,6 +28,28 @@ struct s3c2410_platform_i2c {
         unsigned long   max_freq;       /* max frequency for the bus */
         unsigned long   min_freq;       /* min frequency for the bus */
         unsigned int    sda_delay;      /* pclks (s3c2440 only) */
+
+        void    (*cfg_gpio)(struct platform_device *dev);
 };
 
+/**
+ * s3c_i2c0_set_platdata - set platform data for i2c0 device
+ * @i2c: The platform data to set, or NULL for default data.
+ *
+ * Register the given platform data for use with the i2c0 device. This
+ * call copies the platform data, so the caller can use __initdata for
+ * their copy.
+ *
+ * This call will set cfg_gpio if is null to the default platform
+ * implementation.
+ *
+ * Any user of s3c_device_i2c0 should call this, even if it is with
+ * NULL to ensure that the device is given the default platform data
+ * as the driver will no longer carry defaults.
+ */
+extern void s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *i2c);
+
+/* defined by architecture to configure gpio */
+extern void s3c_i2c0_cfg_gpio(struct platform_device *dev);
+
 #endif /* __ASM_ARCH_IIC_H */