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Commit cd5b700f authored by Srinivas Pandruvada's avatar Srinivas Pandruvada Committed by Jonathan Cameron
Browse files

iio: hid-sensors: Pressure: 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: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 6fe588e5

drivers/iio/pressure/hid-sensor-press.c

+15 −2
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ 
#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>
@@ -79,6 +80,7 @@ static int press_read_raw(struct iio_dev *indio_dev, 
	u32 address;

	int ret;

	int ret_type;

	s32 poll_value;



	*val = 0;

	*val2 = 0;
@@ -94,12 +96,23 @@ static int press_read_raw(struct iio_dev *indio_dev, 
			report_id = -1;

			break;

		}

		if (report_id >= 0)

		if (report_id >= 0) {

			poll_value = hid_sensor_read_poll_value(

					&press_state->common_attributes);

			if (poll_value < 0)

				return -EINVAL;

			hid_sensor_power_state(&press_state->common_attributes,

						true);



			msleep_interruptible(poll_value * 2);



			*val = sensor_hub_input_attr_get_raw_value(

				press_state->common_attributes.hsdev,

				HID_USAGE_SENSOR_PRESSURE, address,

				report_id);

		else {

			hid_sensor_power_state(&press_state->common_attributes,

						false);

		} else {

			*val = 0;

			return -EINVAL;

		}