tech@,

I'd like to keep our videoio.h synchronized with Linux, and
would like to backport new definition of:
 - V4L2_CID_USER_UVC_BASE
 - V4L2_CTRL_FLAG_HAS_WHICH_MIN_MAX, V4L2_CTRL_WHICH_MIN_VAL and
   V4L2_CTRL_WHICH_MAX_VAL
 - V4L2_CTRL_TYPE_RECT

which is based on commits:
 - https://github.com/torvalds/linux/commit/2dc768d71b45a3a40ea15805667ed662127eeefd
 - https://github.com/torvalds/linux/commit/a5bd42aafb068427ecf4d6d34fa023944f211922
 - https://github.com/torvalds/linux/commit/3b9d7340cfac91f8a2ac237a6787f521f1440ca3

Ok?

Index: sys/sys/videoio.h
===================================================================
RCS file: /home/cvs/src/sys/sys/videoio.h,v
diff -u -p -r1.21 videoio.h
--- sys/sys/videoio.h	18 Jan 2025 19:50:55 -0000	1.21
+++ sys/sys/videoio.h	26 Mar 2025 09:00:23 -0000
@@ -330,6 +330,13 @@ enum v4l2_colorfx {
  */
 #define V4L2_CID_USER_THP7312_BASE		(V4L2_CID_USER_BASE + 0x11c0)
 
+/*
+ * The base for the uvc driver controls.
+ * See linux/uvcvideo.h for the list of controls.
+ * We reserve 64 controls for this driver.
+ */
+#define V4L2_CID_USER_UVC_BASE			(V4L2_CID_USER_BASE + 0x11e0)
+
 /* MPEG-class control IDs */
 /* The MPEG controls are applicable to all codec controls
  * and the 'MPEG' part of the define is historical */
@@ -5347,6 +5354,7 @@ struct v4l2_ext_control {
 		int32_t __user *p_s32;
 		int64_t __user *p_s64;
 		struct v4l2_area __user *p_area;
+		struct v4l2_rect __user *p_rect;
 		struct v4l2_ctrl_h264_sps __user *p_h264_sps;
 		struct v4l2_ctrl_h264_pps __user *p_h264_pps;
 		struct v4l2_ctrl_h264_scaling_matrix __user *p_h264_scaling_matrix;
@@ -5395,6 +5403,8 @@ struct v4l2_ext_controls {
 #define V4L2_CTRL_WHICH_CUR_VAL   0
 #define V4L2_CTRL_WHICH_DEF_VAL   0x0f000000
 #define V4L2_CTRL_WHICH_REQUEST_VAL 0x0f010000
+#define V4L2_CTRL_WHICH_MIN_VAL   0x0f020000
+#define V4L2_CTRL_WHICH_MAX_VAL   0x0f030000
 
 enum v4l2_ctrl_type {
 	V4L2_CTRL_TYPE_INTEGER	     = 1,
@@ -5413,6 +5423,7 @@ enum v4l2_ctrl_type {
 	V4L2_CTRL_TYPE_U16	     = 0x0101,
 	V4L2_CTRL_TYPE_U32	     = 0x0102,
 	V4L2_CTRL_TYPE_AREA          = 0x0106,
+	V4L2_CTRL_TYPE_RECT	     = 0x0107,
 
 	V4L2_CTRL_TYPE_HDR10_CLL_INFO		= 0x0110,
 	V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY	= 0x0111,
@@ -5501,6 +5512,7 @@ struct v4l2_querymenu {
 #define V4L2_CTRL_FLAG_EXECUTE_ON_WRITE	0x0200
 #define V4L2_CTRL_FLAG_MODIFY_LAYOUT	0x0400
 #define V4L2_CTRL_FLAG_DYNAMIC_ARRAY	0x0800
+#define V4L2_CTRL_FLAG_HAS_WHICH_MIN_MAX 0x1000
 
 /*  Query flags, to be ORed with the control ID */
 #define V4L2_CTRL_FLAG_NEXT_CTRL	0x80000000