From: Wei Ni <wni@xxxxxxxxxx>
this driver supports setting of alarms, and
reading/setting of time
Signed-off-by: Wei Ni <wni@xxxxxxxxxx>
---
v8: use OSC_SRC_SEL to select external crystal clock.
set alrm->enabled and init the rtc->irq_en.
Add suspend/resume callback.
drivers/rtc/rtc-tps6586x.c | 34 ++++++++++++++++++++++++++++++----
1 files changed, 30 insertions(+), 4 deletions(-)
diff --git a/drivers/rtc/rtc-tps6586x.c b/drivers/rtc/rtc-tps6586x.c
index a42b4bb..b891899 100644
--- a/drivers/rtc/rtc-tps6586x.c
+++ b/drivers/rtc/rtc-tps6586x.c
@@ -30,6 +30,7 @@
#include <linux/slab.h>
#define RTC_CTRL 0xc0
+#define OSC_SRC_SEL BIT(6) /* select internal or external clock */
#define RTC_ENABLE BIT(5) /* enables alarm */
#define RTC_HIRES BIT(4) /* 1Khz or 32Khz updates */
#define RTC_ALARM1_HI 0xc1
@@ -180,6 +181,7 @@ static int tps6586x_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
seconds += rtc->epoch_start;
rtc_time_to_tm(seconds, &alrm->time);
+ alrm->enabled = rtc->irq_en;
return 0;
}
@@ -286,7 +288,9 @@ static int __devinit tps6586x_rtc_probe(struct platform_device *pdev)
/* disable high-res mode, enable tick counting */
err = tps6586x_update(tps_dev, RTC_CTRL,
- (RTC_ENABLE | RTC_HIRES), RTC_ENABLE);
+ (RTC_ENABLE | OSC_SRC_SEL),
+ (RTC_ENABLE | OSC_SRC_SEL));
+
if (err < 0) {
dev_err(&pdev->dev, "unable to start counter\n");
goto fail;
@@ -299,11 +303,12 @@ static int __devinit tps6586x_rtc_probe(struct platform_device *pdev)
IRQF_ONESHOT, "tps6586x-rtc",
&pdev->dev);
if (err) {
- dev_warn(&pdev->dev, "unable to request IRQ(%d)\n", rtc->irq);
+ dev_warn(&pdev->dev, "unable to request IRQ(%d)\n",
+ rtc->irq);
rtc->irq = -1;
} else {
disable_irq(rtc->irq);
- enable_irq_wake(rtc->irq);
+ rtc->irq_en = false;
}
}
@@ -327,6 +332,25 @@ static int __devexit tps6586x_rtc_remove(struct platform_device *pdev)
return 0;
}
+static int tps6586x_rtc_suspend(struct platform_device *pdev,
+ pm_message_t state)
+{
+ struct tps6586x_rtc *rtc = dev_get_drvdata(&pdev->dev);
+
+ if (device_may_wakeup(pdev))
+ enable_irq_wake(rtc->irq);
+ return 0;
+}
+
+static int tps6586x_rtc_resume(struct platform_device *pdev)
+{
+ struct tps6586x_rtc *rtc = dev_get_drvdata(&pdev->dev);
+
+ if (device_may_wakeup(pdev))
+ disable_irq_wake(rtc->irq);
+ return 0;
+}
+
static struct platform_driver tps6586x_rtc_driver = {
.driver = {
.name = "tps6586x-rtc",
@@ -334,6 +358,8 @@ static struct platform_driver tps6586x_rtc_driver = {
},
.probe = tps6586x_rtc_probe,
.remove = __devexit_p(tps6586x_rtc_remove),
+ .suspend = tps6586x_rtc_suspend,
+ .resume = tps6586x_rtc_resume,
};
static int __init tps6586x_rtc_init(void)
@@ -351,4 +377,4 @@ module_exit(tps6586x_rtc_exit);
MODULE_DESCRIPTION("TI TPS6586x RTC driver");
MODULE_AUTHOR("NVIDIA Corporation");
MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:rtc-tps6586x")
+MODULE_ALIAS("platform:rtc-tps6586x");
--
1.7.0
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