[media] v4l2: add v4l2_prio_state to v4l2_device and video_device

Integrate the v4l2_prio_state into the core, ready for use.

One struct v4l2_prio_state is added to v4l2_device and a pointer
to a prio state is added to video_device.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 6 insertions, 0 deletions

diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
index 9193703f4f0f..3700127ba299 100644
--- a/include/media/v4l2-dev.h
+++ b/include/media/v4l2-dev.h
@@ -89,6 +89,9 @@ struct video_device
         /* Control handler associated with this device node. May be NULL. */
         struct v4l2_ctrl_handler *ctrl_handler;
 
+        /* Priority state. If NULL, then v4l2_dev->prio will be used. */
+        struct v4l2_prio_state *prio;
+
         /* device info */
         char name[32];
         int vfl_type;
diff --git a/include/media/v4l2-device.h b/include/media/v4l2-device.h
index 0c2bd3075038..3b723283da26 100644
--- a/include/media/v4l2-device.h
+++ b/include/media/v4l2-device.h
@@ -23,6 +23,7 @@
 
 #include <media/media-device.h>
 #include <media/v4l2-subdev.h>
+#include <media/v4l2-dev.h>
 
 /* Each instance of a V4L2 device should create the v4l2_device struct,
    either stand-alone or embedded in a larger struct.
@@ -55,6 +56,8 @@ struct v4l2_device {
                         unsigned int notification, void *arg);
         /* The control handler. May be NULL. */
         struct v4l2_ctrl_handler *ctrl_handler;
+        /* Device's priority state */
+        struct v4l2_prio_state prio;
         /* BKL replacement mutex. Temporary solution only. */
         struct mutex ioctl_lock;
 };