watchdog: s3c2410: Add support for device tree based probe

This patch adds the of_match_table to enable s3c2410-wdt driver
to be probed when watchdog device node is found in the device tree.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

diff --git a/Documentation/devicetree/bindings/watchdog/samsung-wdt.txt b/Documentation/devicetree/bindings/watchdog/samsung-wdt.txt
new file mode 100644 (file)
index 0000000..79ead82
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/samsung-wdt.txt
@@ -0,0 +1,11 @@
+* Samsung's Watchdog Timer Controller
+
+The Samsung's Watchdog controller is used for resuming system operation
+after a preset amount of time during which the WDT reset event has not
+occured.
+
+Required properties:
+- compatible : should be "samsung,s3c2410-wdt"
+- reg : base physical address of the controller and length of memory mapped
+       region.
+- interrupts : interrupt number to the cpu.

diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c
index f7f5aa00df609e2a39ad328418ef1840ec3c7157..30da88f47cd350885c58e9704a3c37735ff3323c 100644 (file)
--- a/drivers/watchdog/s3c2410_wdt.c
+++ b/drivers/watchdog/s3c2410_wdt.c
@@ -589,6 +589,15 @@ static int s3c2410wdt_resume(struct platform_device *dev)
 #define s3c2410wdt_resume  NULL
 #endif /* CONFIG_PM */
 
+#ifdef CONFIG_OF
+static const struct of_device_id s3c2410_wdt_match[] = {
+       { .compatible = "samsung,s3c2410-wdt" },
+       {},
+};
+MODULE_DEVICE_TABLE(of, s3c2410_wdt_match);
+#else
+#define s3c2410_wdt_match NULL
+#endif
 
 static struct platform_driver s3c2410wdt_driver = {
        .probe          = s3c2410wdt_probe,
@@ -599,6 +608,7 @@ static struct platform_driver s3c2410wdt_driver = {
        .driver         = {
                .owner  = THIS_MODULE,
                .name   = "s3c2410-wdt",
+               .of_match_table = s3c2410_wdt_match,
        },
 };