diff options
| author | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> | 2014-04-19 00:22:00 +0100 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2014-05-05 10:59:49 +0100 |
| commit | 56ff6be608659ac06d4e3cc5827476efa29d610f (patch) | |
| tree | 8d08e07b518db810f8f6bee492ba7dba08683b84 /drivers/iio/pressure/hid-sensor-press.c | |
| parent | a269b9a0a27675c34c62c4e20c4ffb62054cd51a (diff) | |
| download | lwn-56ff6be608659ac06d4e3cc5827476efa29d610f.tar.gz lwn-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.c | 7 |
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) { |