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Commit 7f6cf741 authored by Srinivas Pandruvada's avatar Srinivas Pandruvada Committed by Jonathan Cameron
Browse files

iio: hid-sensors: use asynchronous resume 



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: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent ace4cdfe

drivers/iio/common/hid-sensors/hid-sensor-trigger.c

+21 −1
Original line number Diff line number Diff line
@@ -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);

include/linux/hid-sensor-hub.h

+1 −0
Original line number Diff line number Diff line
@@ -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 */