[libcamera-devel] [PATCH v7 05/11] media: v4l2-ctrls: Add camera location and rotation

[Jacopo Mondi]

Add support for the newly defined V4L2_CID_CAMERA_SENSOR_LOCATION
and V4L2_CID_CAMERA_SENSOR_ROTATION read-only controls used to report
the camera device mounting position and orientation respectively.

Reviewed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>
---
 drivers/media/v4l2-core/v4l2-ctrls.c | 4 ++++
 include/uapi/linux/v4l2-controls.h   | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index 2928c5e0a73d..e0aa24e8ad84 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -1015,6 +1015,8 @@ const char *v4l2_ctrl_get_name(u32 id)
 	case V4L2_CID_PAN_SPEED:		return "Pan, Speed";
 	case V4L2_CID_TILT_SPEED:		return "Tilt, Speed";
 	case V4L2_CID_UNIT_CELL_SIZE:		return "Unit Cell Size";
+	case V4L2_CID_CAMERA_SENSOR_LOCATION:	return "Camera Sensor Location";
+	case V4L2_CID_CAMERA_SENSOR_ROTATION:	return "Camera Sensor Rotation";
 
 	/* FM Radio Modulator controls */
 	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
@@ -1341,6 +1343,8 @@ 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:
+	case V4L2_CID_CAMERA_SENSOR_ROTATION:
 		*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 5a7bedee2b0e..2517d2f63d2f 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -912,6 +912,13 @@ 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
+
+#define V4L2_CID_CAMERA_SENSOR_ROTATION		(V4L2_CID_CAMERA_CLASS_BASE+35)
+
 /* FM Modulator class control IDs */
 
 #define V4L2_CID_FM_TX_CLASS_BASE		(V4L2_CTRL_CLASS_FM_TX | 0x900)
-- 
2.25.1