129  * @function: Internal signal pad/function to route to IO pin
687  * struct v4l2_subdev_pad_config - Used for storing subdev pad information.
693  * This structure only needs to be passed to the pad op if the 'which' field
709  * @pad: pad number
719 	u32 pad;  member
761  * This structure only needs to be passed to the pad op if the 'which' field
775  * struct v4l2_subdev_pad_ops - v4l2-subdev pad level operations
777  * @init_cfg: initialize the pad config to default values
822  *		     operation shall fail if the pad index it has been called on
829  *	source pad. Subdevs that implement this operation must use the active
835  *	source pad. Subdevs that implement this operation must use the active
875 	int (*get_frame_desc)(struct v4l2_subdev *sd, unsigned int pad,
877 	int (*set_frame_desc)(struct v4l2_subdev *sd, unsigned int pad,
879 	int (*get_mbus_config)(struct v4l2_subdev *sd, unsigned int pad,
886 			      struct v4l2_subdev_state *state, u32 pad,
889 			       struct v4l2_subdev_state *state, u32 pad,
903  * @pad: pointer to &struct v4l2_subdev_pad_ops. Can be %NULL
913 	const struct v4l2_subdev_pad_ops	*pad;  member
971  * - Legacy pad config is _not_ supported (state->pads is NULL)
973  * - Multiple streams per pad are supported
1152  * @pad: index of the pad in the &struct v4l2_subdev_state->pads array
1157 			   unsigned int pad)  in v4l2_subdev_get_pad_format()  argument
1161 	if (WARN_ON(pad >= sd->entity.num_pads))  in v4l2_subdev_get_pad_format()
1162 		pad = 0;  in v4l2_subdev_get_pad_format()
1163 	return &state->pads[pad].try_fmt;  in v4l2_subdev_get_pad_format()
1172  * @pad: index of the pad in the &struct v4l2_subdev_state->pads array.
1177 			 unsigned int pad)  in v4l2_subdev_get_pad_crop()  argument
1181 	if (WARN_ON(pad >= sd->entity.num_pads))  in v4l2_subdev_get_pad_crop()
1182 		pad = 0;  in v4l2_subdev_get_pad_crop()
1183 	return &state->pads[pad].try_crop;  in v4l2_subdev_get_pad_crop()
1192  * @pad: index of the pad in the &struct v4l2_subdev_state->pads array.
1197 			    unsigned int pad)  in v4l2_subdev_get_pad_compose()  argument
1201 	if (WARN_ON(pad >= sd->entity.num_pads))  in v4l2_subdev_get_pad_compose()
1202 		pad = 0;  in v4l2_subdev_get_pad_compose()
1203 	return &state->pads[pad].try_compose;  in v4l2_subdev_get_pad_compose()
1210 #define v4l2_subdev_get_try_format(sd, state, pad) \  argument
1211 	v4l2_subdev_get_pad_format(sd, state, pad)
1213 #define v4l2_subdev_get_try_crop(sd, state, pad) \  argument
1214 	v4l2_subdev_get_pad_crop(sd, state, pad)
1216 #define v4l2_subdev_get_try_compose(sd, state, pad) \  argument
1217 	v4l2_subdev_get_pad_compose(sd, state, pad)
1272  * v4l2_subdev_get_fwnode_pad_1_to_1 - Get pad number from a subdev fwnode
1273  *                                     endpoint, assuming 1:1 port:pad
1279  * subdevices that map port numbers and pad indexes 1:1. If the endpoint
1321  * @pad0: pad number for the first pad
1322  * @pad1: pad number for the second pad
1544  * @pad: pad id
1547  * This returns a pointer to &struct v4l2_mbus_framefmt for the given pad +
1550  * If the state does not contain the given pad + stream, NULL is returned.
1554 				    unsigned int pad, u32 stream);
1559  * @pad: pad id
1562  * This returns a pointer to crop rectangle for the given pad + stream in the
1565  * If the state does not contain the given pad + stream, NULL is returned.
1569 				  unsigned int pad, u32 stream);
1575  * @pad: pad id
1578  * This returns a pointer to compose rectangle for the given pad + stream in the
1581  * If the state does not contain the given pad + stream, NULL is returned.
1585 				     unsigned int pad, u32 stream);
1590  * @pad: pad id
1592  * @other_pad: pointer used to return the opposite pad
1595  * This function uses the routing table to find the pad + stream which is
1596  * opposite the given pad + stream.
1604 					  u32 pad, u32 stream, u32 *other_pad,
1611  * @pad: pad id
1614  * This returns a pointer to &struct v4l2_mbus_framefmt for the pad + stream
1615  * that is opposite the given pad + stream in the subdev state.
1617  * If the state does not contain the given pad + stream, NULL is returned.
1621 					     u32 pad, u32 stream);
1624  * v4l2_subdev_state_xlate_streams() - Translate streams from one pad to another
1627  * @pad0: The first pad
1628  * @pad1: The second pad
1629  * @streams: Streams bitmask on the first pad
1656  *	all streams from a sink pad must be routed to a single source pad
1658  *	all streams on a source pad must originate from a single sink pad
1667  *	all streams from a sink pad must be routed to a single source pad, and
1668  *	that source pad shall not get routes from any other sink pad
1708  * v4l2_subdev_enable_streams() - Enable streams on a pad
1710  * @pad: The pad
1713  * This function enables streams on a source @pad of a subdevice. The pad is
1715  * @streams_mask bitmask. This allows enabling multiple streams on a pad at
1725  * operation, limited to subdevs that have a single source pad.
1730  * * -EINVAL: The pad index is invalid, or doesn't correspond to a source pad
1734 int v4l2_subdev_enable_streams(struct v4l2_subdev *sd, u32 pad,
1738  * v4l2_subdev_disable_streams() - Disable streams on a pad
1740  * @pad: The pad
1743  * This function disables streams on a source @pad of a subdevice. The pad is
1745  * @streams_mask bitmask. This allows disabling multiple streams on a pad at
1755  * operation, limited to subdevs that have a single source pad.
1760  * * -EINVAL: The pad index is invalid, or doesn't correspond to a source pad
1764 int v4l2_subdev_disable_streams(struct v4l2_subdev *sd, u32 pad,
1778  * This helper can only be used by subdevs that have a single source pad.