rtc: rtc-twl: convert twl4030rtc_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>

diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index 8bc6c80..8751a52 100644 (file)
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -566,11 +566,10 @@ static void twl_rtc_shutdown(struct platform_device *pdev)
        mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
 }
 
-#ifdef CONFIG_PM
-
+#ifdef CONFIG_PM_SLEEP
 static unsigned char irqstat;
 
-static int twl_rtc_suspend(struct platform_device *pdev, pm_message_t state)
+static int twl_rtc_suspend(struct device *dev)
 {
        irqstat = rtc_irq_bits;
 
@@ -578,17 +577,15 @@ static int twl_rtc_suspend(struct platform_device *pdev, pm_message_t state)
        return 0;
 }
 
-static int twl_rtc_resume(struct platform_device *pdev)
+static int twl_rtc_resume(struct device *dev)
 {
        set_rtc_irq_bit(irqstat);
        return 0;
 }
-
-#else
-#define twl_rtc_suspend NULL
-#define twl_rtc_resume  NULL
 #endif
 
+static SIMPLE_DEV_PM_OPS(twl_rtc_pm_ops, twl_rtc_suspend, twl_rtc_resume);
+
 #ifdef CONFIG_OF
 static const struct of_device_id twl_rtc_of_match[] = {
        {.compatible = "ti,twl4030-rtc", },
@@ -603,11 +600,10 @@ static struct platform_driver twl4030rtc_driver = {
        .probe          = twl_rtc_probe,
        .remove         = twl_rtc_remove,
        .shutdown       = twl_rtc_shutdown,
-       .suspend        = twl_rtc_suspend,
-       .resume         = twl_rtc_resume,
        .driver         = {
                .owner          = THIS_MODULE,
                .name           = "twl_rtc",
+               .pm             = &twl_rtc_pm_ops,
                .of_match_table = of_match_ptr(twl_rtc_of_match),
        },
 };