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authorHans Verkuil <hverkuil@xs4all.nl>2011-02-24 10:42:24 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2011-03-22 16:37:55 -0300
commit0f62fd6a2fa12d6a63cbb18f9e30b05345f636f6 (patch)
treeb5963e3b4a5e859949f0f76b96c58c503a30efa4
parent022654930891c7ddfdb1ea34d6c4af9d1096bf91 (diff)
[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>
-rw-r--r--drivers/media/video/v4l2-dev.c6
-rw-r--r--drivers/media/video/v4l2-device.c1
-rw-r--r--include/media/v4l2-dev.h3
-rw-r--r--include/media/v4l2-device.h3
4 files changed, 13 insertions, 0 deletions
diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c
index 65d546f35ef..6b1ef85d8cc 100644
--- a/drivers/media/video/v4l2-dev.c
+++ b/drivers/media/video/v4l2-dev.c
@@ -573,6 +573,12 @@ int __video_register_device(struct video_device *vdev, int type, int nr,
vdev->parent = vdev->v4l2_dev->dev;
if (vdev->ctrl_handler == NULL)
vdev->ctrl_handler = vdev->v4l2_dev->ctrl_handler;
+ /* If the prio state pointer is NULL, and if the driver doesn't
+ handle priorities itself, then use the v4l2_device prio
+ state. */
+ if (vdev->prio == NULL && vdev->ioctl_ops &&
+ vdev->ioctl_ops->vidioc_s_priority == NULL)
+ vdev->prio = &vdev->v4l2_dev->prio;
}
/* Part 2: find a free minor, device node number and device index. */
diff --git a/drivers/media/video/v4l2-device.c b/drivers/media/video/v4l2-device.c
index a1afda352d0..fd7a445ce34 100644
--- a/drivers/media/video/v4l2-device.c
+++ b/drivers/media/video/v4l2-device.c
@@ -36,6 +36,7 @@ int v4l2_device_register(struct device *dev, struct v4l2_device *v4l2_dev)
INIT_LIST_HEAD(&v4l2_dev->subdevs);
spin_lock_init(&v4l2_dev->lock);
mutex_init(&v4l2_dev->ioctl_lock);
+ v4l2_prio_init(&v4l2_dev->prio);
v4l2_dev->dev = dev;
if (dev == NULL) {
/* If dev == NULL, then name must be filled in by the caller */
diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
index 9193703f4f0..3700127ba29 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 0c2bd307503..3b723283da2 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;
};