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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2012-08-28 20:29:56 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-11-28 10:29:07 -0200 |
| commit | 0550513c7a559b4933c5e1d47fbd15d15f6078d5 (patch) | |
| tree | 923eee429a958c8c765db34008d9b83a47776f0e /drivers/media/usb/uvc/uvc_v4l2.c | |
| parent | 69d11262a3ff4c07e071523e6768ec15ccc147c1 (diff) | |
| download | linux-0550513c7a559b4933c5e1d47fbd15d15f6078d5.tar.gz | |
[media] uvcvideo: Add VIDIOC_[GS]_PRIORITY support
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/usb/uvc/uvc_v4l2.c')
| -rw-r--r-- | drivers/media/usb/uvc/uvc_v4l2.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c index bf9d07393139..8e056046bc20 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -576,6 +576,19 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) break; } + /* Priority */ + case VIDIOC_G_PRIORITY: + *(u32 *)arg = v4l2_prio_max(vdev->prio); + break; + + case VIDIOC_S_PRIORITY: + ret = v4l2_prio_check(vdev->prio, handle->vfh.prio); + if (ret < 0) + return ret; + + return v4l2_prio_change(vdev->prio, &handle->vfh.prio, + *(u32 *)arg); + /* Get, Set & Query control */ case VIDIOC_QUERYCTRL: return uvc_query_v4l2_ctrl(chain, arg); @@ -606,6 +619,10 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) struct v4l2_control *ctrl = arg; struct v4l2_ext_control xctrl; + ret = v4l2_prio_check(vdev->prio, handle->vfh.prio); + if (ret < 0) + return ret; + memset(&xctrl, 0, sizeof xctrl); xctrl.id = ctrl->id; xctrl.value = ctrl->value; @@ -653,6 +670,10 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) } case VIDIOC_S_EXT_CTRLS: + ret = v4l2_prio_check(vdev->prio, handle->vfh.prio); + if (ret < 0) + return ret; + /* Fall through */ case VIDIOC_TRY_EXT_CTRLS: { struct v4l2_ext_controls *ctrls = arg; @@ -747,6 +768,10 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) { u32 input = *(u32 *)arg + 1; + ret = v4l2_prio_check(vdev->prio, handle->vfh.prio); + if (ret < 0) + return ret; + if ((ret = uvc_acquire_privileges(handle)) < 0) return ret; @@ -800,6 +825,10 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) } case VIDIOC_S_FMT: + ret = v4l2_prio_check(vdev->prio, handle->vfh.prio); + if (ret < 0) + return ret; + if ((ret = uvc_acquire_privileges(handle)) < 0) return ret; @@ -902,6 +931,10 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) return uvc_v4l2_get_streamparm(stream, arg); case VIDIOC_S_PARM: + ret = v4l2_prio_check(vdev->prio, handle->vfh.prio); + if (ret < 0) + return ret; + if ((ret = uvc_acquire_privileges(handle)) < 0) return ret; @@ -936,6 +969,10 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) /* Buffers & streaming */ case VIDIOC_REQBUFS: + ret = v4l2_prio_check(vdev->prio, handle->vfh.prio); + if (ret < 0) + return ret; + if ((ret = uvc_acquire_privileges(handle)) < 0) return ret; @@ -981,6 +1018,10 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) if (*type != stream->type) return -EINVAL; + ret = v4l2_prio_check(vdev->prio, handle->vfh.prio); + if (ret < 0) + return ret; + if (!uvc_has_privileges(handle)) return -EBUSY; @@ -999,6 +1040,10 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) if (*type != stream->type) return -EINVAL; + ret = v4l2_prio_check(vdev->prio, handle->vfh.prio); + if (ret < 0) + return ret; + if (!uvc_has_privileges(handle)) return -EBUSY; |