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iio: hid-sensors: Inclinometer 3D: Raw read support 

Added support for raw reading of channel. If the sensor is powered
off, it will turn on for reading value.

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 8009c594a5
commit 6fe588e599
1 changed files with 13 additions and 0 deletions
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13
drivers/iio/orientation/hid-sensor-incl-3d.c
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@ -22,6 +22,7 @@
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/hid-sensor-hub.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
@ -110,11 +111,20 @@ static int incl_3d_read_raw(struct iio_dev *indio_dev,
int report_id = -1;
u32 address;
int ret_type;
s32 poll_value;
*val = 0;
*val2 = 0;
switch (mask) {
case IIO_CHAN_INFO_RAW:
poll_value = hid_sensor_read_poll_value(
&incl_state->common_attributes);
if (poll_value < 0)
return -EINVAL;
hid_sensor_power_state(&incl_state->common_attributes, true);
msleep_interruptible(poll_value * 2);
report_id =
incl_state->incl[chan->scan_index].report_id;
address = incl_3d_addresses[chan->scan_index];
@ -124,8 +134,11 @@ static int incl_3d_read_raw(struct iio_dev *indio_dev,
HID_USAGE_SENSOR_INCLINOMETER_3D, address,
report_id);
else {
hid_sensor_power_state(&incl_state->common_attributes,
false);
return -EINVAL;
}
hid_sensor_power_state(&incl_state->common_attributes, false);
ret_type = IIO_VAL_INT;
break;
case IIO_CHAN_INFO_SCALE: