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Subject[PATCH V3 2/5] rtc: tegra: Use struct dev_pm_ops for power management
Date
Make the Tegra RTC controller driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct platform_driver.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
---
Changes from V1:
- Use SIMPLE_DEV_PM_OPS

Changes from V2:
- Make tegra_rtc_pm_ops as static
- Add Stephen's and Thierry's reviewed by.

drivers/rtc/rtc-tegra.c | 18 ++++++++----------
1 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/drivers/rtc/rtc-tegra.c b/drivers/rtc/rtc-tegra.c
index d64cde6..9b00bb7 100644
--- a/drivers/rtc/rtc-tegra.c
+++ b/drivers/rtc/rtc-tegra.c
@@ -26,6 +26,7 @@
#include <linux/delay.h>
#include <linux/rtc.h>
#include <linux/platform_device.h>
+#include <linux/pm.h>

/* set to 1 = busy every eight 32kHz clocks during copy of sec+msec to AHB */
#define TEGRA_RTC_REG_BUSY 0x004
@@ -391,10 +392,9 @@ static int __exit tegra_rtc_remove(struct platform_device *pdev)
}

#ifdef CONFIG_PM_SLEEP
-static int tegra_rtc_suspend(struct platform_device *pdev, pm_message_t state)
+static int tegra_rtc_suspend(struct device *dev)
{
- struct device *dev = &pdev->dev;
- struct tegra_rtc_info *info = platform_get_drvdata(pdev);
+ struct tegra_rtc_info *info = dev_get_drvdata(dev);

tegra_rtc_wait_while_busy(dev);

@@ -416,10 +416,9 @@ static int tegra_rtc_suspend(struct platform_device *pdev, pm_message_t state)
return 0;
}

-static int tegra_rtc_resume(struct platform_device *pdev)
+static int tegra_rtc_resume(struct device *dev)
{
- struct device *dev = &pdev->dev;
- struct tegra_rtc_info *info = platform_get_drvdata(pdev);
+ struct tegra_rtc_info *info = dev_get_drvdata(dev);

dev_vdbg(dev, "Resume (device_may_wakeup=%d)\n",
device_may_wakeup(dev));
@@ -431,6 +430,8 @@ static int tegra_rtc_resume(struct platform_device *pdev)
}
#endif

+static SIMPLE_DEV_PM_OPS(tegra_rtc_pm_ops, tegra_rtc_suspend, tegra_rtc_resume);
+
static void tegra_rtc_shutdown(struct platform_device *pdev)
{
dev_vdbg(&pdev->dev, "disabling interrupts.\n");
@@ -445,11 +446,8 @@ static struct platform_driver tegra_rtc_driver = {
.name = "tegra_rtc",
.owner = THIS_MODULE,
.of_match_table = tegra_rtc_dt_match,
+ .pm = &tegra_rtc_pm_ops,
},
-#ifdef CONFIG_PM_SLEEP
- .suspend = tegra_rtc_suspend,
- .resume = tegra_rtc_resume,
-#endif
};

static int __init tegra_rtc_init(void)
--
1.7.1.1


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