From 6c7db77e406d61275e41268c1829e847a7237a27 Mon Sep 17 00:00:00 2001 From: Srinivas Pandruvada Date: Sat, 19 Apr 2014 00:22:00 +0100 Subject: [PATCH] iio: hid-sensors: Gyro 3D : 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 --- drivers/iio/gyro/hid-sensor-gyro-3d.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/drivers/iio/gyro/hid-sensor-gyro-3d.c b/drivers/iio/gyro/hid-sensor-gyro-3d.c index 59d6bc3e04df..53ac06040fbe 100644 --- a/drivers/iio/gyro/hid-sensor-gyro-3d.c +++ b/drivers/iio/gyro/hid-sensor-gyro-3d.c @@ -42,6 +42,10 @@ struct gyro_3d_state { struct hid_sensor_common common_attributes; struct hid_sensor_hub_attribute_info gyro[GYRO_3D_CHANNEL_MAX]; u32 gyro_val[GYRO_3D_CHANNEL_MAX]; + int scale_pre_decml; + int scale_post_decml; + int scale_precision; + int value_offset; }; static const u32 gyro_3d_addresses[GYRO_3D_CHANNEL_MAX] = { @@ -123,12 +127,12 @@ static int gyro_3d_read_raw(struct iio_dev *indio_dev, ret_type = IIO_VAL_INT; break; case IIO_CHAN_INFO_SCALE: - *val = gyro_state->gyro[CHANNEL_SCAN_INDEX_X].units; - ret_type = IIO_VAL_INT; + *val = gyro_state->scale_pre_decml; + *val2 = gyro_state->scale_post_decml; + ret_type = gyro_state->scale_precision; break; case IIO_CHAN_INFO_OFFSET: - *val = hid_sensor_convert_exponent( - gyro_state->gyro[CHANNEL_SCAN_INDEX_X].unit_expo); + *val = gyro_state->value_offset; ret_type = IIO_VAL_INT; break; case IIO_CHAN_INFO_SAMP_FREQ: @@ -262,6 +266,11 @@ static int gyro_3d_parse_report(struct platform_device *pdev, st->gyro[1].index, st->gyro[1].report_id, st->gyro[2].index, st->gyro[2].report_id); + st->scale_precision = hid_sensor_format_scale( + HID_USAGE_SENSOR_GYRO_3D, + &st->gyro[CHANNEL_SCAN_INDEX_X], + &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, -- 2.20.1