Add orientation sensor "scale" and "offset" parse support.
These two properties are needed for exponent data conversion.
Signed-off-by: Song Hongyan <hongyan.song@xxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxx>
Reviewed-by: Xu Even <even.xu@xxxxxxxxx>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
---
.../iio/common/hid-sensors/hid-sensor-attributes.c | 6 ++++++
drivers/iio/orientation/hid-sensor-rotation.c | 20 ++++++++++++++++++++
2 files changed, 26 insertions(+)
diff --git a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c
index 01e02b9..420f28f 100644
--- a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c
+++ b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c
@@ -62,6 +62,12 @@
{HID_USAGE_SENSOR_TIME_TIMESTAMP, 0, 1000000000, 0},
{HID_USAGE_SENSOR_TIME_TIMESTAMP, HID_USAGE_SENSOR_UNITS_MILLISECOND,
1000000, 0},
+
+ {HID_USAGE_SENSOR_DEVICE_ORIENTATION, 0, 1, 0},
+
+ {HID_USAGE_SENSOR_RELATIVE_ORIENTATION, 0, 1, 0},
+
+ {HID_USAGE_SENSOR_GEOMAGNETIC_ORIENTATION, 0, 1, 0},
};
static int pow_10(unsigned power)
diff --git a/drivers/iio/orientation/hid-sensor-rotation.c b/drivers/iio/orientation/hid-sensor-rotation.c
index 60d3517..e9fa86c 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 @@ struct dev_rot_state {
.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,
--
1.9.1
--
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