davinci: add platform support for watchdog timer

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

3 files changed, 42 insertions, 5 deletions

diff --git a/arch/arm/mach-davinci/clock.h b/arch/arm/mach-davinci/clock.h
index 35736ec202f8..584494a32070 100644
--- a/arch/arm/mach-davinci/clock.h
+++ b/arch/arm/mach-davinci/clock.h
@@ -93,4 +93,7 @@ struct davinci_clk {
         }
 
 int davinci_clk_init(struct davinci_clk *clocks);
+
+extern struct platform_device davinci_wdt_device;
+
 #endif
diff --git a/arch/arm/mach-davinci/devices.c b/arch/arm/mach-davinci/devices.c
index a31370b93dd2..7fdc408105b2 100644
--- a/arch/arm/mach-davinci/devices.c
+++ b/arch/arm/mach-davinci/devices.c
@@ -54,3 +54,38 @@ void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
         (void) platform_device_register(&davinci_i2c_device);
 }
 
+/*-------------------------------------------------------------------------*/
+
+static struct resource wdt_resources[] = {
+        {
+                .start  = 0x01c21c00,
+                .end    = 0x01c21fff,
+                .flags  = IORESOURCE_MEM,
+        },
+};
+
+struct platform_device davinci_wdt_device = {
+        .name           = "watchdog",
+        .id             = -1,
+        .num_resources  = ARRAY_SIZE(wdt_resources),
+        .resource       = wdt_resources,
+};
+
+static void davinci_init_wdt(void)
+{
+        platform_device_register(&davinci_wdt_device);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static int __init davinci_init_devices(void)
+{
+        /* please keep these calls, and their implementations above,
+         * in alphabetical order so they're easier to sort through.
+         */
+        davinci_init_wdt();
+
+        return 0;
+}
+arch_initcall(davinci_init_devices);
+
diff --git a/arch/arm/mach-davinci/time.c b/arch/arm/mach-davinci/time.c
index 494e01bff5c3..efbbc2ac63b4 100644
--- a/arch/arm/mach-davinci/time.c
+++ b/arch/arm/mach-davinci/time.c
@@ -19,6 +19,7 @@
 #include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/device.h>
+#include <linux/platform_device.h>
 
 #include <mach/hardware.h>
 #include <asm/system.h>
@@ -349,15 +350,13 @@ struct sys_timer davinci_timer = {
 
 
 /* reset board using watchdog timer */
-void davinci_watchdog_reset(void) {
+void davinci_watchdog_reset(void)
+{
         u32 tgcr, wdtcr;
         void __iomem *base = IO_ADDRESS(DAVINCI_WDOG_BASE);
-        struct device dev;
         struct clk *wd_clk;
-        char *name = "watchdog";
 
-        dev_set_name(&dev, name);
-        wd_clk = clk_get(&dev, NULL);
+        wd_clk = clk_get(&davinci_wdt_device.dev, NULL);
         if (WARN_ON(IS_ERR(wd_clk)))
                 return;
         clk_enable(wd_clk);