[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>

2 files changed, 16 insertions, 1 deletions

diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index bd2aa4f16141..27b48be73676 100644
--- a/arch/arm/mach-realview/core.c
+++ b/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)
diff --git a/arch/arm/mach-realview/realview_pb1176.c b/arch/arm/mach-realview/realview_pb1176.c
index 8f0683c22140..d9d684d29e92 100644
--- a/arch/arm/mach-realview/realview_pb1176.c
+++ b/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];