diff options
Diffstat (limited to 'include/media/v4l2-subdev.h')
| -rw-r--r-- | include/media/v4l2-subdev.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index d4e3b44cf14c..4d7e7e5cf96d 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -670,6 +670,30 @@ struct v4l2_subdev_pad_config { * * @set_frame_desc: set the low level media bus frame parameters, @fd array * may be adjusted by the subdev driver to device capabilities. + * + * @get_mbus_config: get the media bus configuration of a remote sub-device. + * The media bus configuration is usually retrieved from the + * firmware interface at sub-device probe time, immediately + * applied to the hardware and eventually adjusted by the + * driver. Remote sub-devices (usually video receivers) shall + * use this operation to query the transmitting end bus + * configuration in order to adjust their own one accordingly. + * Callers should make sure they get the most up-to-date as + * possible configuration from the remote end, likely calling + * this operation as close as possible to stream on time. The + * operation shall fail if the pad index it has been called on + * is not valid or in case of unrecoverable failures. + * + * @set_mbus_config: set the media bus configuration of a remote sub-device. + * This operations is intended to allow, in combination with + * the get_mbus_config operation, the negotiation of media bus + * configuration parameters between media sub-devices. The + * operation shall not fail if the requested configuration is + * not supported, but the driver shall update the content of + * the %config argument to reflect what has been actually + * applied to the hardware. The operation shall fail if the + * pad index it has been called on is not valid or in case of + * unrecoverable failures. */ struct v4l2_subdev_pad_ops { int (*init_cfg)(struct v4l2_subdev *sd, @@ -710,6 +734,10 @@ struct v4l2_subdev_pad_ops { struct v4l2_mbus_frame_desc *fd); int (*set_frame_desc)(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_mbus_frame_desc *fd); + int (*get_mbus_config)(struct v4l2_subdev *sd, unsigned int pad, + struct v4l2_mbus_config *config); + int (*set_mbus_config)(struct v4l2_subdev *sd, unsigned int pad, + struct v4l2_mbus_config *config); }; /** |