Add support for IIO mounting_matrix

[android-x86/hardware-intel-libsensors.git] / common.h

diff --git a/common.h b/common.h
index 42d4acd..09788a2 100644 (file)
--- a/common.h
+++ b/common.h
@@ -28,6 +28,7 @@
 #define DEVICE_AVAIL_FREQ_PATH BASE_PATH "sampling_frequency_available"
 #define ILLUMINATION_CALIBPATH BASE_PATH "in_illuminance_calibscale"
 #define SENSOR_CALIB_BIAS_PATH BASE_PATH "in_%s_calibbias"
+#define MOUNTING_MATRIX_PATH   BASE_PATH "mounting_matrix"
 
 #define PROP_BASE              "ro.iio.%s.%s" /* Note: PROPERTY_KEY_MAX is small */
 
@@ -266,6 +267,12 @@ typedef struct
        unsigned char order[MAX_CHANNELS];
 
        /*
+        * If the QUIRK_MOUNTING_MATRIX bit is set in quirks, the contents of this matrix is used to correct the sample values so that it takes
+        * into account the way the sensor has been mounted on the PCB.
+        */
+       float mounting_matrix[9];
+
+       /*
         * Event counter - will be used to check if we have a significant sample for noisy sensors. We want to make sure we do not send any wrong
         * events before filtering kicks in. We can also use it for statistics.
         */