linux-kernel - [PATCH V3 2/5] rtc: tegra: Use struct dev_pm

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Message-ID: <1363030201-14717-3-git-send-email-ldewangan@nvidia.com>
Date:	Tue, 12 Mar 2013 00:59:58 +0530
From:	Laxman Dewangan <ldewangan@...dia.com>
To:	<akpm@...ux-foundation.org>, <a.zummo@...ertech.it>
CC:	<swarren@...dotorg.org>, <rtc-linux@...glegroups.com>,
	<linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<thierry.reding@...onic-design.de>,
	Laxman Dewangan <ldewangan@...dia.com>
Subject: [PATCH V3 2/5] rtc: tegra: Use struct dev_pm_ops for power management

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@...dia.com>
Reviewed-by: Thierry Reding <thierry.reding@...onic-design.de>
Reviewed-by: Stephen Warren <swarren@...dia.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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