129  * @function: Internal signal pad/function to route to IO pin
679  * struct v4l2_subdev_pad_config - Used for storing subdev pad information.
696  * @pad: pad number
707 	u32 pad;  member
751  * This structure only needs to be passed to the pad op if the 'which' field
766  * struct v4l2_subdev_pad_ops - v4l2-subdev pad level operations
818  *		     operation shall fail if the pad index it has been called on
826  *	source pad. Subdevs that implement this operation must use the active
832  *	source pad. Subdevs that implement this operation must use the active
876 	int (*get_frame_desc)(struct v4l2_subdev *sd, unsigned int pad,
878 	int (*set_frame_desc)(struct v4l2_subdev *sd, unsigned int pad,
880 	int (*get_mbus_config)(struct v4l2_subdev *sd, unsigned int pad,
887 			      struct v4l2_subdev_state *state, u32 pad,
890 			       struct v4l2_subdev_state *state, u32 pad,
904  * @pad: pointer to &struct v4l2_subdev_pad_ops. Can be %NULL
914 	const struct v4l2_subdev_pad_ops	*pad;  member
974  * - Legacy pad config is _not_ supported (state->pads is NULL)
976  * - Multiple streams per pad are supported
1198  * v4l2_subdev_get_fwnode_pad_1_to_1 - Get pad number from a subdev fwnode
1199  *                                     endpoint, assuming 1:1 port:pad
1205  * subdevices that map port numbers and pad indexes 1:1. If the endpoint
1247  * @pad0: pad number for the first pad
1248  * @pad1: pad number for the second pad
1330  * @pad: pad id
1333  * This returns a pointer to &struct v4l2_mbus_framefmt for the given pad +
1336  * For stream-unaware drivers the format for the corresponding pad is returned.
1337  * If the pad does not exist, NULL is returned.
1348 #define v4l2_subdev_state_get_format(state, pad, ...)			\  argument
1350 		(state, pad, ##__VA_ARGS__)
1351 #define __v4l2_subdev_state_get_format_pad(state, pad)	\  argument
1352 	__v4l2_subdev_state_get_format(state, pad, 0)
1355 			       unsigned int pad, u32 stream);
1360  * @pad: pad id
1363  * This returns a pointer to crop rectangle for the given pad + stream in the
1366  * For stream-unaware drivers the crop rectangle for the corresponding pad is
1367  * returned. If the pad does not exist, NULL is returned.
1369 #define v4l2_subdev_state_get_crop(state, pad, ...)			\  argument
1371 		(state, pad, ##__VA_ARGS__)
1372 #define __v4l2_subdev_state_get_crop_pad(state, pad)	\  argument
1373 	__v4l2_subdev_state_get_crop(state, pad, 0)
1375 __v4l2_subdev_state_get_crop(struct v4l2_subdev_state *state, unsigned int pad,
1381  * @pad: pad id
1384  * This returns a pointer to compose rectangle for the given pad + stream in the
1387  * For stream-unaware drivers the compose rectangle for the corresponding pad is
1388  * returned. If the pad does not exist, NULL is returned.
1390 #define v4l2_subdev_state_get_compose(state, pad, ...)			\  argument
1392 		(state, pad, ##__VA_ARGS__)
1393 #define __v4l2_subdev_state_get_compose_pad(state, pad)	\  argument
1394 	__v4l2_subdev_state_get_compose(state, pad, 0)
1397 				unsigned int pad, u32 stream);
1402  * @pad: pad id
1405  * This returns a pointer to the frame interval for the given pad + stream in
1408  * For stream-unaware drivers the frame interval for the corresponding pad is
1409  * returned. If the pad does not exist, NULL is returned.
1411 #define v4l2_subdev_state_get_interval(state, pad, ...)			\  argument
1413 		(state, pad, ##__VA_ARGS__)
1414 #define __v4l2_subdev_state_get_interval_pad(state, pad)	\  argument
1415 	__v4l2_subdev_state_get_interval(state, pad, 0)
1418 				 unsigned int pad, u32 stream);
1505  * @pad: pad id
1507  * @other_pad: pointer used to return the opposite pad
1510  * This function uses the routing table to find the pad + stream which is
1511  * opposite the given pad + stream.
1519 					  u32 pad, u32 stream, u32 *other_pad,
1526  * @pad: pad id
1529  * This returns a pointer to &struct v4l2_mbus_framefmt for the pad + stream
1530  * that is opposite the given pad + stream in the subdev state.
1532  * If the state does not contain the given pad + stream, NULL is returned.
1536 					     u32 pad, u32 stream);
1539  * v4l2_subdev_state_xlate_streams() - Translate streams from one pad to another
1542  * @pad0: The first pad
1543  * @pad1: The second pad
1544  * @streams: Streams bitmask on the first pad
1571  *	all streams from a sink pad must be routed to a single source pad
1573  *	all streams on a source pad must originate from a single sink pad
1582  *	all streams from a sink pad must be routed to a single source pad, and
1583  *	that source pad shall not get routes from any other sink pad
1623  * v4l2_subdev_enable_streams() - Enable streams on a pad
1625  * @pad: The pad
1628  * This function enables streams on a source @pad of a subdevice. The pad is
1630  * @streams_mask bitmask. This allows enabling multiple streams on a pad at
1640  * operation, limited to subdevs that have a single source pad.
1645  * * -EINVAL: The pad index is invalid, or doesn't correspond to a source pad
1649 int v4l2_subdev_enable_streams(struct v4l2_subdev *sd, u32 pad,
1653  * v4l2_subdev_disable_streams() - Disable streams on a pad
1655  * @pad: The pad
1658  * This function disables streams on a source @pad of a subdevice. The pad is
1660  * @streams_mask bitmask. This allows disabling multiple streams on a pad at
1670  * operation, limited to subdevs that have a single source pad.
1675  * * -EINVAL: The pad index is invalid, or doesn't correspond to a source pad
1679 int v4l2_subdev_disable_streams(struct v4l2_subdev *sd, u32 pad,
1693  * This helper can only be used by subdevs that have a single source pad.