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authorSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>2014-04-19 03:22:00 +0400
committerJonathan Cameron <jic23@kernel.org>2014-05-05 13:59:49 +0400
commit56ff6be608659ac06d4e3cc5827476efa29d610f (patch)
tree8d08e07b518db810f8f6bee492ba7dba08683b84 /drivers/iio/gyro
parenta269b9a0a27675c34c62c4e20c4ffb62054cd51a (diff)
downloadlinux-56ff6be608659ac06d4e3cc5827476efa29d610f.tar.xz
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/gyro')
-rw-r--r--drivers/iio/gyro/hid-sensor-gyro-3d.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/iio/gyro/hid-sensor-gyro-3d.c b/drivers/iio/gyro/hid-sensor-gyro-3d.c
index 53ac06040fbe..392c30b8cd74 100644
--- a/drivers/iio/gyro/hid-sensor-gyro-3d.c
+++ b/drivers/iio/gyro/hid-sensor-gyro-3d.c
@@ -201,9 +201,8 @@ static int gyro_3d_proc_event(struct hid_sensor_hub_device *hsdev,
struct iio_dev *indio_dev = platform_get_drvdata(priv);
struct gyro_3d_state *gyro_state = iio_priv(indio_dev);
- dev_dbg(&indio_dev->dev, "gyro_3d_proc_event [%d]\n",
- gyro_state->common_attributes.data_ready);
- if (gyro_state->common_attributes.data_ready)
+ dev_dbg(&indio_dev->dev, "gyro_3d_proc_event\n");
+ if (atomic_read(&gyro_state->common_attributes.data_ready))
hid_sensor_push_data(indio_dev,
gyro_state->gyro_val,
sizeof(gyro_state->gyro_val));
@@ -339,7 +338,7 @@ static int hid_gyro_3d_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
goto error_free_dev_mem;
}
- gyro_state->common_attributes.data_ready = false;
+ atomic_set(&gyro_state->common_attributes.data_ready, 0);
ret = hid_sensor_setup_trigger(indio_dev, name,
&gyro_state->common_attributes);
if (ret < 0) {