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@xxxxxxxxxxxxxxx>
---
Formerly this patch was v4 5/7 for Intel ISH series, which was separated
from the series.
v5:
Added cancel_work_sync
.../iio/common/hid-sensors/hid-sensor-trigger.c | 22 +++++++++++++++++++++-
include/linux/hid-sensor-hub.h | 1 +
2 files changed, 22 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
index 5b41f9d..5264ed6 100644
--- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
+++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
@@ -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);
diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h
index c02b5ce..dd85f35 100644
--- a/include/linux/hid-sensor-hub.h
+++ b/include/linux/hid-sensor-hub.h
@@ -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 */
--
2.7.4
--
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