Commit 36783d09 authored by Srinivas Pandruvada's avatar Srinivas Pandruvada Committed by Jonathan Cameron
Browse files

iio: hid-sensors: ALS: adjust scale and offset 



Using units and unit exponent to calculate scale which is compliant
to IIO ABI.

Signed-off-by: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 6c7db77e

drivers/iio/light/hid-sensor-als.c

+13 −4
Original line number Diff line number Diff line
@@ -37,6 +37,10 @@ struct als_state { 
	struct hid_sensor_common common_attributes;

	struct hid_sensor_hub_attribute_info als_illum;

	u32 illum;

	int scale_pre_decml;

	int scale_post_decml;

	int scale_precision;

	int value_offset;

};



/* Channel definitions */
@@ -102,12 +106,12 @@ static int als_read_raw(struct iio_dev *indio_dev, 
		ret_type = IIO_VAL_INT;

		break;

	case IIO_CHAN_INFO_SCALE:

		*val = als_state->als_illum.units;

		ret_type = IIO_VAL_INT;

		*val = als_state->scale_pre_decml;

		*val2 = als_state->scale_post_decml;

		ret_type = als_state->scale_precision;

		break;

	case IIO_CHAN_INFO_OFFSET:

		*val = hid_sensor_convert_exponent(

				als_state->als_illum.unit_expo);

		*val = als_state->value_offset;

		ret_type = IIO_VAL_INT;

		break;

	case IIO_CHAN_INFO_SAMP_FREQ:
@@ -229,6 +233,11 @@ static int als_parse_report(struct platform_device *pdev, 
	dev_dbg(&pdev->dev, "als %x:%x\n", st->als_illum.index,

			st->als_illum.report_id);



	st->scale_precision = hid_sensor_format_scale(

				HID_USAGE_SENSOR_ALS,

				&st->als_illum,

				&st->scale_pre_decml, &st->scale_post_decml);



	/* Set Sensitivity field ids, when there is no individual modifier */

	if (st->common_attributes.sensitivity.index < 0) {

		sensor_hub_input_get_attribute_info(hsdev,

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