rtc: rtc-puv3: convert puv3_rtc_driver 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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 12 insertions, 15 deletions

diff --git a/drivers/rtc/rtc-puv3.c b/drivers/rtc/rtc-puv3.c
index 0407e13d4de4..72f437170d2e 100644
--- a/drivers/rtc/rtc-puv3.c
+++ b/drivers/rtc/rtc-puv3.c
@@ -207,14 +207,14 @@ static const struct rtc_class_ops puv3_rtcops = {
         .proc           = puv3_rtc_proc,
 };
 
-static void puv3_rtc_enable(struct platform_device *pdev, int en)
+static void puv3_rtc_enable(struct device *dev, int en)
 {
         if (!en) {
                 writel(readl(RTC_RTSR) & ~RTC_RTSR_HZE, RTC_RTSR);
         } else {
                 /* re-enable the device, and check it is ok */
                 if ((readl(RTC_RTSR) & RTC_RTSR_HZE) == 0) {
-                        dev_info(&pdev->dev, "rtc disabled, re-enabling\n");
+                        dev_info(dev, "rtc disabled, re-enabling\n");
                         writel(readl(RTC_RTSR) | RTC_RTSR_HZE, RTC_RTSR);
                 }
         }
@@ -276,7 +276,7 @@ static int puv3_rtc_probe(struct platform_device *pdev)
                 goto err_nores;
         }
 
-        puv3_rtc_enable(pdev, 1);
+        puv3_rtc_enable(&pdev->dev, 1);
 
         /* register RTC and exit */
         rtc = rtc_device_register("pkunity", &pdev->dev, &puv3_rtcops,
@@ -296,44 +296,41 @@ static int puv3_rtc_probe(struct platform_device *pdev)
         return 0;
 
  err_nortc:
-        puv3_rtc_enable(pdev, 0);
+        puv3_rtc_enable(&pdev->dev, 0);
         release_resource(puv3_rtc_mem);
 
  err_nores:
         return ret;
 }
 
-#ifdef CONFIG_PM
-
+#ifdef CONFIG_PM_SLEEP
 static int ticnt_save;
 
-static int puv3_rtc_suspend(struct platform_device *pdev, pm_message_t state)
+static int puv3_rtc_suspend(struct device *dev)
 {
         /* save RTAR for anyone using periodic interrupts */
         ticnt_save = readl(RTC_RTAR);
-        puv3_rtc_enable(pdev, 0);
+        puv3_rtc_enable(dev, 0);
         return 0;
 }
 
-static int puv3_rtc_resume(struct platform_device *pdev)
+static int puv3_rtc_resume(struct device *dev)
 {
-        puv3_rtc_enable(pdev, 1);
+        puv3_rtc_enable(dev, 1);
         writel(ticnt_save, RTC_RTAR);
         return 0;
 }
-#else
-#define puv3_rtc_suspend NULL
-#define puv3_rtc_resume  NULL
 #endif
 
+static SIMPLE_DEV_PM_OPS(puv3_rtc_pm_ops, puv3_rtc_suspend, puv3_rtc_resume);
+
 static struct platform_driver puv3_rtc_driver = {
         .probe          = puv3_rtc_probe,
         .remove         = puv3_rtc_remove,
-        .suspend        = puv3_rtc_suspend,
-        .resume         = puv3_rtc_resume,
         .driver         = {
                 .name   = "PKUnity-v3-RTC",
                 .owner  = THIS_MODULE,
+                .pm     = &puv3_rtc_pm_ops,
         }
 };