From: Srinivas Pandruvada Date: Fri, 18 Apr 2014 23:22:00 +0000 (+0100) Subject: iio: hid-sensors: Pressure: adjust scale and offset X-Git-Tag: firefly_0821_release~176^2~3465^2~39^2~1015^2~8 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=a269b9a0a27675c34c62c4e20c4ffb62054cd51a;p=firefly-linux-kernel-4.4.55.git iio: hid-sensors: Pressure: adjust scale and offset Using units and unit exponent to calculate scale which is compliant to IIO ABI. Signed-off-by: Srinivas Pandruvada Signed-off-by: Jonathan Cameron --- diff --git a/drivers/iio/pressure/hid-sensor-press.c b/drivers/iio/pressure/hid-sensor-press.c index e0e6409aa94e..ff69da4443b8 100644 --- a/drivers/iio/pressure/hid-sensor-press.c +++ b/drivers/iio/pressure/hid-sensor-press.c @@ -36,6 +36,10 @@ struct press_state { struct hid_sensor_common common_attributes; struct hid_sensor_hub_attribute_info press_attr; u32 press_data; + int scale_pre_decml; + int scale_post_decml; + int scale_precision; + int value_offset; }; /* Channel definitions */ @@ -102,12 +106,12 @@ static int press_read_raw(struct iio_dev *indio_dev, ret_type = IIO_VAL_INT; break; case IIO_CHAN_INFO_SCALE: - *val = press_state->press_attr.units; - ret_type = IIO_VAL_INT; + *val = press_state->scale_pre_decml; + *val2 = press_state->scale_post_decml; + ret_type = press_state->scale_precision; break; case IIO_CHAN_INFO_OFFSET: - *val = hid_sensor_convert_exponent( - press_state->press_attr.unit_expo); + *val = press_state->value_offset; ret_type = IIO_VAL_INT; break; case IIO_CHAN_INFO_SAMP_FREQ: @@ -229,6 +233,11 @@ static int press_parse_report(struct platform_device *pdev, dev_dbg(&pdev->dev, "press %x:%x\n", st->press_attr.index, st->press_attr.report_id); + st->scale_precision = hid_sensor_format_scale( + HID_USAGE_SENSOR_PRESSURE, + &st->press_attr, + &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,