diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2018-05-23 07:11:06 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2018-08-31 11:07:26 -0400 |
| commit | 93a9d9008d3c963d5d12c56460b5e1d93dad3ea8 (patch) | |
| tree | 0f24b743fe509b3010fa0a557580783a92706f3c /include/media | |
| parent | 0ca0e8442dcd5da2af5ce35e90b083a492b4cbac (diff) | |
| download | linux-93a9d9008d3c963d5d12c56460b5e1d93dad3ea8.tar.gz | |
media: v4l2-device.h: add v4l2_device_supports_requests() helper
Add a simple helper function that tests if the driver supports
the request API.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'include/media')
| -rw-r--r-- | include/media/v4l2-device.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/media/v4l2-device.h b/include/media/v4l2-device.h index b330e4a08a6b..ac7677a183ff 100644 --- a/include/media/v4l2-device.h +++ b/include/media/v4l2-device.h @@ -211,6 +211,17 @@ static inline void v4l2_subdev_notify(struct v4l2_subdev *sd, sd->v4l2_dev->notify(sd, notification, arg); } +/** + * v4l2_device_supports_requests - Test if requests are supported. + * + * @v4l2_dev: pointer to struct v4l2_device + */ +static inline bool v4l2_device_supports_requests(struct v4l2_device *v4l2_dev) +{ + return v4l2_dev->mdev && v4l2_dev->mdev->ops && + v4l2_dev->mdev->ops->req_queue; +} + /* Helper macros to iterate over all subdevs. */ /** |