IIO: call sensor hub open close function

Call hid_sensor_hub_device_open when user space opens device and call
hid_sensor_hub_device_close when device is closed. This helps in
saving power.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
index 87419c4..b6e77e0 100644 (file)
--- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
+++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
@@ -34,6 +34,12 @@ static int hid_sensor_data_rdy_trigger_set_state(struct iio_trigger *trig,
        struct hid_sensor_common *st = iio_trigger_get_drvdata(trig);
        int state_val;
 
+       if (state) {
+               if (sensor_hub_device_open(st->hsdev))
+                       return -EIO;
+       } else
+               sensor_hub_device_close(st->hsdev);
+
        state_val = state ? 1 : 0;
        if (IS_ENABLED(CONFIG_HID_SENSOR_ENUM_BASE_QUIRKS))
                ++state_val;