diff options
| author | Song Hongyan <hongyan.song@intel.com> | 2017-05-07 13:24:26 +0300 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2017-05-07 14:22:36 +0300 |
| commit | a78587d338d084037b0ea6687508f207d8dec2fb (patch) | |
| tree | 43f2428537d50c344174aba0d3ec9feb87561a77 /drivers/iio/orientation | |
| parent | 00907c7a3282053dd4782e02c3101809608e7ea7 (diff) | |
| download | linux-a78587d338d084037b0ea6687508f207d8dec2fb.tar.xz | |
iio: hid-sensor-rotation: Add "scale" and "offset" properties parse support
Add orientation sensor "scale" and "offset" parse support.
These two properties are needed for exponent data conversion.
Signed-off-by: Song Hongyan <hongyan.song@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Reviewed-by: Xu Even <even.xu@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/orientation')
| -rw-r--r-- | drivers/iio/orientation/hid-sensor-rotation.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/iio/orientation/hid-sensor-rotation.c b/drivers/iio/orientation/hid-sensor-rotation.c index 60d3517a78af..e9fa86c87db5 100644 --- a/drivers/iio/orientation/hid-sensor-rotation.c +++ b/drivers/iio/orientation/hid-sensor-rotation.c @@ -31,6 +31,10 @@ struct dev_rot_state { struct hid_sensor_common common_attributes; struct hid_sensor_hub_attribute_info quaternion; u32 sampled_vals[4]; + int scale_pre_decml; + int scale_post_decml; + int scale_precision; + int value_offset; }; /* Channel definitions */ @@ -41,6 +45,8 @@ static const struct iio_chan_spec dev_rot_channels[] = { .channel2 = IIO_MOD_QUATERNION, .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ) | + BIT(IIO_CHAN_INFO_OFFSET) | + BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_HYSTERESIS) } }; @@ -80,6 +86,15 @@ static int dev_rot_read_raw(struct iio_dev *indio_dev, } else ret_type = -EINVAL; break; + case IIO_CHAN_INFO_SCALE: + vals[0] = rot_state->scale_pre_decml; + vals[1] = rot_state->scale_post_decml; + return rot_state->scale_precision; + + case IIO_CHAN_INFO_OFFSET: + *vals = rot_state->value_offset; + return IIO_VAL_INT; + case IIO_CHAN_INFO_SAMP_FREQ: ret_type = hid_sensor_read_samp_freq_value( &rot_state->common_attributes, &vals[0], &vals[1]); @@ -199,6 +214,11 @@ static int dev_rot_parse_report(struct platform_device *pdev, dev_dbg(&pdev->dev, "dev_rot: attrib size %d\n", st->quaternion.size); + st->scale_precision = hid_sensor_format_scale( + hsdev->usage, + &st->quaternion, + &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, |