diff options
| author | Zhangfei Gao <zhangfei.gao@linaro.org> | 2013-04-01 09:46:04 +0800 |
|---|---|---|
| committer | Guodong Xu <guodong.xu@linaro.org> | 2013-04-23 18:28:17 +0800 |
| commit | 838a81e0bfbfb8cd23b79f866632657fd5ce5a38 (patch) | |
| tree | 47ee6c052f219ed79d6d540ddf2eb9dbc40522a9 | |
| parent | 43c5e583c21c1bcf136fd3e9ca5377c1122466ed (diff) | |
drivers/rtc/rtc-pl031.c: use rtc as wakeup source
How to test: Documentation/rtc.txt
echo +n > /sys/class/rtc/rtc1/wakealarm; (n is seconds to genetate wakeup irq)
echo mem > /sys/power/state
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
| -rw-r--r-- | drivers/rtc/rtc-pl031.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c index 81c5077feff3..e141a43dc65f 100644 --- a/drivers/rtc/rtc-pl031.c +++ b/drivers/rtc/rtc-pl031.c @@ -371,6 +371,7 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id) } } + device_init_wakeup(&adev->dev, 1); ldata->rtc = rtc_device_register("pl031", &adev->dev, ops, THIS_MODULE); if (IS_ERR(ldata->rtc)) { @@ -400,6 +401,32 @@ err_req: return ret; } +#ifdef CONFIG_PM +static int pl031_suspend(struct device *dev) +{ + struct amba_device *adev = to_amba_device(dev); + + if (adev->irq[0] >= 0 && device_may_wakeup(&adev->dev)) + enable_irq_wake(adev->irq[0]); + return 0; +} + +static int pl031_resume(struct device *dev) +{ + struct amba_device *adev = to_amba_device(dev); + + if (adev->irq[0] >= 0 && device_may_wakeup(&adev->dev)) + disable_irq_wake(adev->irq[0]); + return 0; +} + +static SIMPLE_DEV_PM_OPS(pl031_pm, pl031_suspend, pl031_resume); + +#define PL031_PM (&pl031_pm) +#else +#define PL031_PM NULL +#endif + /* Operations for the original ARM version */ static struct pl031_vendor_data arm_pl031 = { .ops = { @@ -469,6 +496,7 @@ MODULE_DEVICE_TABLE(amba, pl031_ids); static struct amba_driver pl031_driver = { .drv = { .name = "rtc-pl031", + .pm = PL031_PM, }, .id_table = pl031_ids, .probe = pl031_probe, |