Add support for the newly defined V4L2_CID_CAMERA_SENSOR_LOCATION
read-only control used to report the camera device mounting position.

Signed-off-by: Jacopo Mondi <jac...@jmondi.org>
---
 drivers/media/v4l2-core/v4l2-ctrls.c | 2 ++
 include/uapi/linux/v4l2-controls.h   | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c 
b/drivers/media/v4l2-core/v4l2-ctrls.c
index 1d8f38824631..db7124494530 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -994,6 +994,7 @@ const char *v4l2_ctrl_get_name(u32 id)
        case V4L2_CID_AUTO_FOCUS_RANGE:         return "Auto Focus, Range";
        case V4L2_CID_PAN_SPEED:                return "Pan, Speed";
        case V4L2_CID_TILT_SPEED:               return "Tilt, Speed";
+       case V4L2_CID_CAMERA_SENSOR_LOCATION:   return "Camera Sensor Location";
 
        /* FM Radio Modulator controls */
        /* Keep the order of the 'case's the same as in v4l2-controls.h! */
@@ -1318,6 +1319,7 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum 
v4l2_ctrl_type *type,
                break;
        case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE:
        case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT:
+       case V4L2_CID_CAMERA_SENSOR_LOCATION:
                *type = V4L2_CTRL_TYPE_INTEGER;
                *flags |= V4L2_CTRL_FLAG_READ_ONLY;
                break;
diff --git a/include/uapi/linux/v4l2-controls.h 
b/include/uapi/linux/v4l2-controls.h
index a2669b79b294..387c2c8553cb 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -912,6 +912,11 @@ enum v4l2_auto_focus_range {
 #define V4L2_CID_PAN_SPEED                     (V4L2_CID_CAMERA_CLASS_BASE+32)
 #define V4L2_CID_TILT_SPEED                    (V4L2_CID_CAMERA_CLASS_BASE+33)
 
+#define V4L2_CID_CAMERA_SENSOR_LOCATION                
(V4L2_CID_CAMERA_CLASS_BASE+34)
+#define V4L2_LOCATION_FRONT                    0
+#define V4L2_LOCATION_BACK                     1
+#define V4L2_LOCATION_EXTERNAL                 2
+
 /* FM Modulator class control IDs */
 
 #define V4L2_CID_FM_TX_CLASS_BASE              (V4L2_CTRL_CLASS_FM_TX | 0x900)
-- 
2.23.0

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