diff options
| author | Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com> | 2025-03-24 10:04:44 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2026-03-11 01:05:31 +0100 |
| commit | a564839e630c11b089470d2e010b0019b7cf61bc (patch) | |
| tree | b9392eff90d82dceeb20a8d37b170cbd30ab2e12 /include | |
| parent | 291d75952cf7e6801fe02c62ad694d50dc64e56b (diff) | |
media: subdev: Add v4l2_subdev_get_frame_desc_passthrough helper
Add a helper for v4l2_subdev_pad_ops.v4l2_get_frame_desc operation. The
helper can be used when the subdevice directly passes through the
streams.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/media/v4l2-subdev.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index a37d9a847196..e754ed3421c5 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -1722,6 +1722,28 @@ int v4l2_subdev_disable_streams(struct v4l2_subdev *sd, u32 pad, */ int v4l2_subdev_s_stream_helper(struct v4l2_subdev *sd, int enable); +/** + * v4l2_subdev_get_frame_desc_passthrough() - Helper to implement the subdev + * v4l2_get_frame_desc operation in simple passthrough cases + * @sd: The subdevice + * @pad: The source pad index + * @fd: The mbus frame desc + * + * Subdevice drivers that only pass through the streams can use this helper + * to implement the &v4l2_subdev_pad_ops.v4l2_get_frame_desc operation. + * + * The helper will call get_frame_desc on the subdevice's sources, create a new + * frame desc which contains only the streams on the given source pad. The data + * for each frame desc entry is copied directly from the data provided from the + * calls to the subdevice's sources, with the exception of the 'stream' field + * which is set according to the subdevice's routing table. + * + * Return: 0 on success, or a negative error code otherwise. + */ +int v4l2_subdev_get_frame_desc_passthrough(struct v4l2_subdev *sd, + unsigned int pad, + struct v4l2_mbus_frame_desc *fd); + #endif /* CONFIG_VIDEO_V4L2_SUBDEV_API */ #endif /* CONFIG_MEDIA_CONTROLLER */ |