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path: root/drivers/rtc/rtc-tegra.c
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Diffstat (limited to 'drivers/rtc/rtc-tegra.c')
-rw-r--r--drivers/rtc/rtc-tegra.c64
1 files changed, 17 insertions, 47 deletions
diff --git a/drivers/rtc/rtc-tegra.c b/drivers/rtc/rtc-tegra.c
index 7c033756d6b5..a34315d25478 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
@@ -309,7 +310,7 @@ static const struct of_device_id tegra_rtc_dt_match[] = {
};
MODULE_DEVICE_TABLE(of, tegra_rtc_dt_match);
-static int tegra_rtc_probe(struct platform_device *pdev)
+static int __init tegra_rtc_probe(struct platform_device *pdev)
{
struct tegra_rtc_info *info;
struct resource *res;
@@ -348,53 +349,35 @@ static int tegra_rtc_probe(struct platform_device *pdev)
device_init_wakeup(&pdev->dev, 1);
- info->rtc_dev = rtc_device_register(
- pdev->name, &pdev->dev, &tegra_rtc_ops, THIS_MODULE);
+ info->rtc_dev = devm_rtc_device_register(&pdev->dev,
+ dev_name(&pdev->dev), &tegra_rtc_ops,
+ THIS_MODULE);
if (IS_ERR(info->rtc_dev)) {
ret = PTR_ERR(info->rtc_dev);
- info->rtc_dev = NULL;
- dev_err(&pdev->dev,
- "Unable to register device (err=%d).\n",
+ dev_err(&pdev->dev, "Unable to register device (err=%d).\n",
ret);
return ret;
}
ret = devm_request_irq(&pdev->dev, info->tegra_rtc_irq,
tegra_rtc_irq_handler, IRQF_TRIGGER_HIGH,
- "rtc alarm", &pdev->dev);
+ dev_name(&pdev->dev), &pdev->dev);
if (ret) {
dev_err(&pdev->dev,
"Unable to request interrupt for device (err=%d).\n",
ret);
- goto err_dev_unreg;
+ return ret;
}
dev_notice(&pdev->dev, "Tegra internal Real Time Clock\n");
return 0;
-
-err_dev_unreg:
- rtc_device_unregister(info->rtc_dev);
-
- return ret;
}
-static int tegra_rtc_remove(struct platform_device *pdev)
+#ifdef CONFIG_PM_SLEEP
+static int tegra_rtc_suspend(struct device *dev)
{
- struct tegra_rtc_info *info = platform_get_drvdata(pdev);
-
- rtc_device_unregister(info->rtc_dev);
-
- platform_set_drvdata(pdev, NULL);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int tegra_rtc_suspend(struct platform_device *pdev, pm_message_t state)
-{
- 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 +399,9 @@ 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 +413,8 @@ 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");
@@ -439,30 +423,16 @@ static void tegra_rtc_shutdown(struct platform_device *pdev)
MODULE_ALIAS("platform:tegra_rtc");
static struct platform_driver tegra_rtc_driver = {
- .remove = tegra_rtc_remove,
.shutdown = tegra_rtc_shutdown,
.driver = {
.name = "tegra_rtc",
.owner = THIS_MODULE,
.of_match_table = tegra_rtc_dt_match,
+ .pm = &tegra_rtc_pm_ops,
},
-#ifdef CONFIG_PM
- .suspend = tegra_rtc_suspend,
- .resume = tegra_rtc_resume,
-#endif
};
-static int __init tegra_rtc_init(void)
-{
- return platform_driver_probe(&tegra_rtc_driver, tegra_rtc_probe);
-}
-module_init(tegra_rtc_init);
-
-static void __exit tegra_rtc_exit(void)
-{
- platform_driver_unregister(&tegra_rtc_driver);
-}
-module_exit(tegra_rtc_exit);
+module_platform_driver_probe(tegra_rtc_driver, tegra_rtc_probe);
MODULE_AUTHOR("Jon Mayo <jmayo@nvidia.com>");
MODULE_DESCRIPTION("driver for Tegra internal RTC");