From mboxrd@z Thu Jan 1 00:00:00 1970 From: Srinivas Pandruvada Subject: [PATCH 2/3] IIO: call sensor hub open close function Date: Wed, 18 Sep 2013 10:13:18 -0700 Message-ID: <1379524399-16995-2-git-send-email-srinivas.pandruvada@linux.intel.com> References: <1379524399-16995-1-git-send-email-srinivas.pandruvada@linux.intel.com> Return-path: In-Reply-To: <1379524399-16995-1-git-send-email-srinivas.pandruvada-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> Sender: linux-iio-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-input-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-iio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: jic23-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, jkosina-AlSwsSmVLrQ@public.gmane.org, holler-SXC+2es9fhnfWeYVQQPykw@public.gmane.org, Srinivas Pandruvada List-Id: linux-input@vger.kernel.org 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 --- 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