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iio: hid-sensors: use asynchronous resume

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Some platforms power off sensor hubs during S3 suspend, which will require
longer time to resume. This hurts system resume time, so resume
asynchronously.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Srinivas Pandruvada 2016-08-15 12:12:47 -07:00 committed by Jonathan Cameron
parent ace4cdfe67
commit 7f6cf74145
2 changed files with 22 additions and 1 deletions
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22
drivers/iio/common/hid-sensors/hid-sensor-trigger.c
View file

@ -122,6 +122,14 @@ int hid_sensor_power_state(struct hid_sensor_common *st, bool state)
#endif
}
static void hid_sensor_set_power_work(struct work_struct *work)
{
struct hid_sensor_common *attrb = container_of(work,
struct hid_sensor_common,
work);
_hid_sensor_power_state(attrb, true);
}
static int hid_sensor_data_rdy_trigger_set_state(struct iio_trigger *trig,
bool state)
{
@ -130,6 +138,7 @@ static int hid_sensor_data_rdy_trigger_set_state(struct iio_trigger *trig,
void hid_sensor_remove_trigger(struct hid_sensor_common *attrb)
{
cancel_work_sync(&attrb->work);
iio_trigger_unregister(attrb->trigger);
iio_trigger_free(attrb->trigger);
}
@ -170,6 +179,9 @@ int hid_sensor_setup_trigger(struct iio_dev *indio_dev, const char *name,
goto error_unreg_trigger;
iio_device_set_drvdata(indio_dev, attrb);
INIT_WORK(&attrb->work, hid_sensor_set_power_work);
pm_suspend_ignore_children(&attrb->pdev->dev, true);
pm_runtime_enable(&attrb->pdev->dev);
/* Default to 3 seconds, but can be changed from sysfs */
@ -202,7 +214,15 @@ static int hid_sensor_resume(struct device *dev)
struct platform_device *pdev = to_platform_device(dev);
struct iio_dev *indio_dev = platform_get_drvdata(pdev);
struct hid_sensor_common *attrb = iio_device_get_drvdata(indio_dev);
schedule_work(&attrb->work);
return 0;
}
static int hid_sensor_runtime_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct iio_dev *indio_dev = platform_get_drvdata(pdev);
struct hid_sensor_common *attrb = iio_device_get_drvdata(indio_dev);
return _hid_sensor_power_state(attrb, true);
}
@ -211,7 +231,7 @@ static int hid_sensor_resume(struct device *dev)
const struct dev_pm_ops hid_sensor_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(hid_sensor_suspend, hid_sensor_resume)
SET_RUNTIME_PM_OPS(hid_sensor_suspend,
hid_sensor_resume, NULL)
hid_sensor_runtime_resume, NULL)
};
EXPORT_SYMBOL(hid_sensor_pm_ops);

1
include/linux/hid-sensor-hub.h
View file

@ -236,6 +236,7 @@ struct hid_sensor_common {
struct hid_sensor_hub_attribute_info report_state;
struct hid_sensor_hub_attribute_info power_state;
struct hid_sensor_hub_attribute_info sensitivity;
struct work_struct work;
};
/* Convert from hid unit expo to regular exponent */