The patch titled
Subject: rtc: omap: add runtime pm support
has been added to the -mm tree. Its filename is
rtc-omap-add-runtime-pm-support.patch
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------------------------------------------------------
From: Vaibhav Hiremath <hvaibhav@xxxxxx>
Subject: rtc: omap: add runtime pm support
OMAP1 RTC driver is used in multiple devices like, OMAPL138 and AM33XX.
Driver currently doesn't handle any clocks, which may be right for OMAP1
architecture but in case of AM33XX, the clock/module needs to be enabled
in order to access the registers.
So convert this driver to runtime pm, which internally handles rest.
[afzal@xxxxxx: handle error path]
Signed-off-by: Vaibhav Hiremath <hvaibhav@xxxxxx>
Signed-off-by: Afzal Mohammed <afzal@xxxxxx>
Acked-by: Sekhar Nori <nsekhar@xxxxxx>
Cc: Grant Likely <grant.likely@xxxxxxxxxxxx>
Cc: Sekhar Nori <nsekhar@xxxxxx>
Cc: Kevin Hilman <khilman@xxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxxx>
Cc: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
Cc: Daniel Mack <zonque@xxxxxxxxx>
Cc: Vaibhav Hiremath <hvaibhav@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/rtc/rtc-omap.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff -puN drivers/rtc/rtc-omap.c~rtc-omap-add-runtime-pm-support drivers/rtc/rtc-omap.c
--- a/drivers/rtc/rtc-omap.c~rtc-omap-add-runtime-pm-support
+++ a/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
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
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 platf
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
_
Patches currently in -mm which might be from hvaibhav@xxxxxx are
rtc-omap-kicker-mechanism-support.patch
arm-davinci-remove-rtc-kicker-release.patch
rtc-omap-dt-support.patch
rtc-omap-depend-on-am33xx.patch
rtc-omap-add-runtime-pm-support.patch
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