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authorSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>2014-04-19 01:22:00 +0200
committerJonathan Cameron <jic23@kernel.org>2014-05-05 11:59:49 +0200
commit56ff6be608659ac06d4e3cc5827476efa29d610f (patch)
tree8d08e07b518db810f8f6bee492ba7dba08683b84 /drivers/iio/pressure/hid-sensor-press.c
parentiio: hid-sensors: Pressure: adjust scale and offset (diff)
downloadlinux-56ff6be608659ac06d4e3cc5827476efa29d610f.tar.xz
linux-56ff6be608659ac06d4e3cc5827476efa29d610f.zip
iio: hid-sensors: Add API to power on/off
Added an API to allow client drivers to turn ON and OFF sensors for quick read. Added data_read as counting varaible instead of boolean, so that sensor is powered off only when last user released it. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/pressure/hid-sensor-press.c')
-rw-r--r--drivers/iio/pressure/hid-sensor-press.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/iio/pressure/hid-sensor-press.c b/drivers/iio/pressure/hid-sensor-press.c
index ff69da4443b8..39df50c45dab 100644
--- a/drivers/iio/pressure/hid-sensor-press.c
+++ b/drivers/iio/pressure/hid-sensor-press.c
@@ -180,9 +180,8 @@ static int press_proc_event(struct hid_sensor_hub_device *hsdev,
struct iio_dev *indio_dev = platform_get_drvdata(priv);
struct press_state *press_state = iio_priv(indio_dev);
- dev_dbg(&indio_dev->dev, "press_proc_event [%d]\n",
- press_state->common_attributes.data_ready);
- if (press_state->common_attributes.data_ready)
+ dev_dbg(&indio_dev->dev, "press_proc_event\n");
+ if (atomic_read(&press_state->common_attributes.data_ready))
hid_sensor_push_data(indio_dev,
&press_state->press_data,
sizeof(press_state->press_data));
@@ -307,7 +306,7 @@ static int hid_press_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
goto error_free_dev_mem;
}
- press_state->common_attributes.data_ready = false;
+ atomic_set(&press_state->common_attributes.data_ready, 0);
ret = hid_sensor_setup_trigger(indio_dev, name,
&press_state->common_attributes);
if (ret) {