iio: hid-sensors: Get feature report from sensor hub after changing power state

Some sensor hubs require a get feature report call to be issued soon after
changing the power state of the sensor. Without this, the sensor remains in
the current state. This patch adds a call soon after the power state.

This is retained as a generic call across all sensor hubs since the behavior
has been noticed on more than one implementation.

Signed-off-by: Archana Patni <archana.patni@intel.com>
Signed-off-by: Subramony Sesha <subramony.sesha@intel.com>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@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 dbefbdaf7cd10b4c25f31f33a63b7d6b37d58c03..f26f52d7c46f6bae38c3b267d1b6f17879b13824 100644 (file)
--- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
+++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
@@ -73,6 +73,9 @@ static int hid_sensor_data_rdy_trigger_set_state(struct iio_trigger *trig,
                                        (s32)report_val);
        }
 
+       sensor_hub_get_feature(st->hsdev, st->power_state.report_id,
+                                       st->power_state.index,
+                                       &state_val);
        return 0;
 }