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iio: hid-sensors: Add API to power on/off

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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>
This commit is contained in:
Srinivas Pandruvada 2014-04-19 00:22:00 +01:00 • committed by Jonathan Cameron
parent a269b9a0a2
commit 56ff6be608
11 changed files with 39 additions and 38 deletions
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2
include/linux/hid-sensor-hub.h
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@ -189,7 +189,7 @@ struct hid_sensor_common {
struct hid_sensor_hub_device *hsdev;
struct platform_device *pdev;
unsigned usage_id;
bool data_ready;
atomic_t data_ready;
struct iio_trigger *trigger;
struct hid_sensor_hub_attribute_info poll;
struct hid_sensor_hub_attribute_info report_state;