iio: hid-sensors: magnetometer : Add sensitivity

A number of Properties that can be applied to Data Fields are per data
field basis or for all data fields. Adding sensitivity field for all
magnetometer fields, which is most commonly used in currently available
sensor hubs.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/magnetometer/hid-sensor-magn-3d.c b/drivers/iio/magnetometer/hid-sensor-magn-3d.c
index 2634920..67fce19 100644 (file)
--- a/drivers/iio/magnetometer/hid-sensor-magn-3d.c
+++ b/drivers/iio/magnetometer/hid-sensor-magn-3d.c
@@ -263,6 +263,18 @@ static int magn_3d_parse_report(struct platform_device *pdev,
                        st->magn[1].index, st->magn[1].report_id,
                        st->magn[2].index, st->magn[2].report_id);
 
+       /* Set Sensitivity field ids, when there is no individual modifier */
+       if (st->common_attributes.sensitivity.index < 0) {
+               sensor_hub_input_get_attribute_info(hsdev,
+                       HID_FEATURE_REPORT, usage_id,
+                       HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
+                       HID_USAGE_SENSOR_DATA_ORIENTATION,
+                       &st->common_attributes.sensitivity);
+               dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
+                       st->common_attributes.sensitivity.index,
+                       st->common_attributes.sensitivity.report_id);
+       }
+
        return ret;
 }
 

diff --git a/include/linux/hid-sensor-ids.h b/include/linux/hid-sensor-ids.h
index 8d45e02..4cc1658 100644 (file)
--- a/include/linux/hid-sensor-ids.h
+++ b/include/linux/hid-sensor-ids.h
@@ -42,6 +42,7 @@
 
 /* ORIENTATION: Compass 3D: (200083) */
 #define HID_USAGE_SENSOR_COMPASS_3D                            0x200083
+#define HID_USAGE_SENSOR_DATA_ORIENTATION                      0x200470
 #define HID_USAGE_SENSOR_ORIENT_MAGN_HEADING                   0x200471
 #define HID_USAGE_SENSOR_ORIENT_MAGN_HEADING_X                 0x200472
 #define HID_USAGE_SENSOR_ORIENT_MAGN_HEADING_Y                 0x200473