[PATCH 2/3] IIO: call sensor hub open close function
From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Date: 2013-09-10 20:04:06
Also in:
linux-iio
Subsystem:
hid sensor hub drivers, iio subsystem and drivers, the rest · Maintainers:
Jiri Kosina, Jonathan Cameron, Srinivas Pandruvada, Linus Torvalds
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> --- drivers/iio/common/hid-sensors/hid-sensor-trigger.c | 6 ++++++ 1 file changed, 6 insertions(+)
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
--- 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;
--
1.8.3.1