watchdog: s3c2410_wdt: convert s3c2410wdt to dev_pm_ops
Instead of using legacy suspend/resume methods, using newer
dev_pm_ops structure allows better control over power management.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c
index c3beb3a..6a22cf5 100644
--- a/drivers/watchdog/s3c2410_wdt.c
+++ b/drivers/watchdog/s3c2410_wdt.c
@@ -448,12 +448,12 @@
s3c2410wdt_stop(&s3c2410_wdd);
}
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
static unsigned long wtcon_save;
static unsigned long wtdat_save;
-static int s3c2410wdt_suspend(struct platform_device *dev, pm_message_t state)
+static int s3c2410wdt_suspend(struct device *dev)
{
/* Save watchdog state, and turn it off. */
wtcon_save = readl(wdt_base + S3C2410_WTCON);
@@ -465,7 +465,7 @@
return 0;
}
-static int s3c2410wdt_resume(struct platform_device *dev)
+static int s3c2410wdt_resume(struct device *dev)
{
/* Restore watchdog state. */
@@ -473,16 +473,15 @@
writel(wtdat_save, wdt_base + S3C2410_WTCNT); /* Reset count */
writel(wtcon_save, wdt_base + S3C2410_WTCON);
- dev_info(&dev->dev, "watchdog %sabled\n",
+ dev_info(dev, "watchdog %sabled\n",
(wtcon_save & S3C2410_WTCON_ENABLE) ? "en" : "dis");
return 0;
}
+#endif
-#else
-#define s3c2410wdt_suspend NULL
-#define s3c2410wdt_resume NULL
-#endif /* CONFIG_PM */
+static SIMPLE_DEV_PM_OPS(s3c2410wdt_pm_ops, s3c2410wdt_suspend,
+ s3c2410wdt_resume);
#ifdef CONFIG_OF
static const struct of_device_id s3c2410_wdt_match[] = {
@@ -496,11 +495,10 @@
.probe = s3c2410wdt_probe,
.remove = s3c2410wdt_remove,
.shutdown = s3c2410wdt_shutdown,
- .suspend = s3c2410wdt_suspend,
- .resume = s3c2410wdt_resume,
.driver = {
.owner = THIS_MODULE,
.name = "s3c2410-wdt",
+ .pm = &s3c2410wdt_pm_ops,
.of_match_table = of_match_ptr(s3c2410_wdt_match),
},
};