[WATCHDOG] mv64x60_wdt: Add arch/powerpc platform support
Add support for arch/powerpc, specifically for the prpmc2800 platform.
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
diff --git a/arch/powerpc/sysdev/mv64x60_dev.c b/arch/powerpc/sysdev/mv64x60_dev.c
index b618fa6..548a320 100644
--- a/arch/powerpc/sysdev/mv64x60_dev.c
+++ b/arch/powerpc/sysdev/mv64x60_dev.c
@@ -390,6 +390,61 @@
return err;
}
+/*
+ * Create mv64x60_wdt platform devices
+ */
+static int __init mv64x60_wdt_device_setup(struct device_node *np, int id)
+{
+ struct resource r;
+ struct platform_device *pdev;
+ struct mv64x60_wdt_pdata pdata;
+ const unsigned int *prop;
+ int err;
+
+ err = of_address_to_resource(np, 0, &r);
+ if (err)
+ return err;
+
+ memset(&pdata, 0, sizeof(pdata));
+
+ prop = of_get_property(np, "timeout", NULL);
+ if (!prop)
+ return -ENODEV;
+ pdata.timeout = *prop;
+
+ np = of_get_parent(np);
+ if (!np)
+ return -ENODEV;
+
+ prop = of_get_property(np, "clock-frequency", NULL);
+ of_node_put(np);
+ if (!prop)
+ return -ENODEV;
+ pdata.bus_clk = *prop / 1000000; /* wdt driver wants freq in MHz */
+
+ pdev = platform_device_alloc(MV64x60_WDT_NAME, id);
+ if (!pdev)
+ return -ENOMEM;
+
+ err = platform_device_add_resources(pdev, &r, 1);
+ if (err)
+ goto error;
+
+ err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
+ if (err)
+ goto error;
+
+ err = platform_device_add(pdev);
+ if (err)
+ goto error;
+
+ return 0;
+
+error:
+ platform_device_put(pdev);
+ return err;
+}
+
static int __init mv64x60_device_setup(void)
{
struct device_node *np = NULL;
@@ -414,6 +469,15 @@
if ((err = mv64x60_i2c_device_setup(np, id)))
goto error;
+ /* support up to one watchdog timer */
+ np = of_find_compatible_node(np, NULL, "marvell,mv64x60-wdt");
+ if (np) {
+ if ((err = mv64x60_wdt_device_setup(np, id)))
+ goto error;
+ of_node_put(np);
+ }
+
+
return 0;
error: