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HID: hid-sensor-hub: Extend API for async reads

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Add additional flag to read in async mode. In this mode the caller will get
reply via registered callback for capture_sample. Callbacks can be registered
using sensor_hub_register_callback function. The usage id parameter of the
capture_sample can be matched with the usage id of the requested attribute.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Srinivas Pandruvada
2015-02-19 15:33:56 -08:00
committed by Jiri Kosina
parent cb67126f32
commit b3f4737d00
10 changed files with 64 additions and 44 deletions
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3
drivers/iio/accel/hid-sensor-accel-3d.c
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@@ -130,7 +130,8 @@ static int accel_3d_read_raw(struct iio_dev *indio_dev,
*val = sensor_hub_input_attr_get_raw_value(
accel_state->common_attributes.hsdev,
HID_USAGE_SENSOR_ACCEL_3D, address,
report_id);
report_id,
SENSOR_HUB_SYNC);
else {
*val = 0;
hid_sensor_power_state(&accel_state->common_attributes,