[ARM] 5395/1: RealView: Add support for the DS1338 RTC chip

This chip is on the I2C bus on the RealView and Versatile boards. The
patch adds the i2c_board_info definition for this device and registers
it with the I2C subsystem.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-realview/core.c

@@ -158,11 +158,25 @@ static struct resource realview_i2c_resource = {
 
 struct platform_device realview_i2c_device = {
 	.name		= "versatile-i2c",
-	.id		= -1,
+	.id		= 0,
 	.num_resources	= 1,
 	.resource	= &realview_i2c_resource,
 };
 
+static struct i2c_board_info realview_i2c_board_info[] = {
+	{
+		I2C_BOARD_INFO("rtc-ds1307", 0xd0 >> 1),
+		.type = "ds1338",
+	},
+};
+
+static int __init realview_i2c_init(void)
+{
+	return i2c_register_board_info(0, realview_i2c_board_info,
+				       ARRAY_SIZE(realview_i2c_board_info));
+}
+arch_initcall(realview_i2c_init);
+
 #define REALVIEW_SYSMCI	(__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_MCI_OFFSET)
 
 static unsigned int realview_mmc_status(struct device *dev)

arch/arm/mach-realview/realview_pb1176.c

@@ -260,6 +260,7 @@ static void __init realview_pb1176_init(void)
 
 	realview_flash_register(&realview_pb1176_flash_resource, 1);
 	realview_eth_register(NULL, realview_pb1176_smsc911x_resources);
+	platform_device_register(&realview_i2c_device);
 
 	for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 		struct amba_device *d = amba_devs[i];

arch/arm/mach-versatile/core.c

@@ -335,11 +335,25 @@ static struct resource versatile_i2c_resource = {
 
 static struct platform_device versatile_i2c_device = {
 	.name			= "versatile-i2c",
-	.id			= -1,
+	.id			= 0,
 	.num_resources		= 1,
 	.resource		= &versatile_i2c_resource,
 };
 
+static struct i2c_board_info versatile_i2c_board_info[] = {
+	{
+		I2C_BOARD_INFO("rtc-ds1307", 0xd0 >> 1),
+		.type = "ds1338",
+	},
+};
+
+static int __init versatile_i2c_init(void)
+{
+	return i2c_register_board_info(0, versatile_i2c_board_info,
+				       ARRAY_SIZE(versatile_i2c_board_info));
+}
+arch_initcall(versatile_i2c_init);
+
 #define VERSATILE_SYSMCI	(__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_MCI_OFFSET)
 
 unsigned int mmc_status(struct device *dev)