diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/rtc/rtc-omap.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c index dff9ff476b0d..600971407aac 100644 --- a/drivers/rtc/rtc-omap.c +++ b/drivers/rtc/rtc-omap.c @@ -22,6 +22,7 @@ #include <linux/platform_device.h> #include <linux/of.h> #include <linux/of_device.h> +#include <linux/pm_runtime.h> #include <asm/io.h> @@ -364,6 +365,10 @@ static int __init omap_rtc_probe(struct platform_device *pdev) goto fail; } + /* Enable the clock/module so that we can access the registers */ + pm_runtime_enable(&pdev->dev); + pm_runtime_get_sync(&pdev->dev); + id_entry = platform_get_device_id(pdev); if (id_entry && (id_entry->driver_data & OMAP_RTC_HAS_KICKER)) { rtc_writel(KICK0_VALUE, OMAP_RTC_KICK0_REG); @@ -448,6 +453,8 @@ fail1: fail0: if (id_entry && (id_entry->driver_data & OMAP_RTC_HAS_KICKER)) rtc_writel(0, OMAP_RTC_KICK0_REG); + pm_runtime_put_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev); iounmap(rtc_base); fail: release_mem_region(mem->start, resource_size(mem)); @@ -474,6 +481,11 @@ static int __exit omap_rtc_remove(struct platform_device *pdev) rtc_device_unregister(rtc); if (id_entry && (id_entry->driver_data & OMAP_RTC_HAS_KICKER)) rtc_writel(0, OMAP_RTC_KICK0_REG); + + /* Disable the clock/module */ + pm_runtime_put_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev); + iounmap(rtc_base); release_mem_region(mem->start, resource_size(mem)); return 0; @@ -496,11 +508,17 @@ static int omap_rtc_suspend(struct platform_device *pdev, pm_message_t state) else rtc_write(0, OMAP_RTC_INTERRUPTS_REG); + /* Disable the clock/module */ + pm_runtime_put_sync(&pdev->dev); + return 0; } static int omap_rtc_resume(struct platform_device *pdev) { + /* Enable the clock/module so that we can access the registers */ + pm_runtime_get_sync(&pdev->dev); + if (device_may_wakeup(&pdev->dev)) disable_irq_wake(omap_rtc_alarm); else |