media: uapi: v4l: subdev: Enable streams API

Remove v4l2_subdev_enable_streams_api variable that was used to easily
enable streams API for development, and conditions that use the variable.

This patch enables the streams API for V4L2 sub-device interface which
allows transporting multiple streams on a single MC link.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>

drivers/media/v4l2-core/v4l2-subdev.c

@@ -26,15 +26,6 @@
 #include <media/v4l2-fh.h>
 #include <media/v4l2-ioctl.h>
 
-#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
-/*
- * The Streams API is an experimental feature. To use the Streams API, set
- * 'v4l2_subdev_enable_streams_api' to 1 below.
- */
-
-static bool v4l2_subdev_enable_streams_api;
-#endif
-
 /*
  * Maximum stream ID is 63 for now, as we use u64 bitmask to represent a set
  * of streams.
@@ -565,13 +556,6 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg,
 				       V4L2_SUBDEV_CLIENT_CAP_STREAMS;
 	int rval;
 
-	/*
-	 * If the streams API is not enabled, remove V4L2_SUBDEV_CAP_STREAMS.
-	 * Remove this when the API is no longer experimental.
-	 */
-	if (!v4l2_subdev_enable_streams_api)
-		streams_subdev = false;
-
 	switch (cmd) {
 	case VIDIOC_SUBDEV_QUERYCAP: {
 		struct v4l2_subdev_capability *cap = arg;
@@ -913,9 +897,6 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg,
 		struct v4l2_subdev_krouting krouting = {};
 		unsigned int i;
 
-		if (!v4l2_subdev_enable_streams_api)
-			return -ENOIOCTLCMD;
-
 		if (!(sd->flags & V4L2_SUBDEV_FL_STREAMS))
 			return -ENOIOCTLCMD;
 
@@ -986,9 +967,6 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg,
 		struct v4l2_subdev_routing *routing = arg;
 		struct v4l2_subdev_krouting *krouting;
 
-		if (!v4l2_subdev_enable_streams_api)
-			return -ENOIOCTLCMD;
-
 		if (!(sd->flags & V4L2_SUBDEV_FL_STREAMS))
 			return -ENOIOCTLCMD;
 
@@ -1016,14 +994,6 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg,
 	case VIDIOC_SUBDEV_S_CLIENT_CAP: {
 		struct v4l2_subdev_client_capability *client_cap = arg;
 
-		/*
-		 * Clear V4L2_SUBDEV_CLIENT_CAP_STREAMS if streams API is not
-		 * enabled. Remove this when streams API is no longer
-		 * experimental.
-		 */
-		if (!v4l2_subdev_enable_streams_api)
-			client_cap->capabilities &= ~V4L2_SUBDEV_CLIENT_CAP_STREAMS;
-
 		/* Filter out unsupported capabilities */
 		client_cap->capabilities &= V4L2_SUBDEV_CLIENT_CAP_STREAMS;