/* * V4L2 OF binding parsing library * * Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd. * Author: Sylwester Nawrocki <s.nawrocki@samsung.com> * * Copyright (C) 2012 Renesas Electronics Corp. * Author: Guennadi Liakhovetski <g.liakhovetski@gmx.de> * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. */ #ifndef _V4L2_OF_H #define _V4L2_OF_H #include <linux/list.h> #include <linux/types.h> #include <linux/errno.h> #include <media/v4l2-mediabus.h> struct device_node; /** * struct v4l2_of_bus_mipi_csi2 - MIPI CSI-2 bus data structure * @flags: media bus (V4L2_MBUS_*) flags * @data_lanes: an array of physical data lane indexes * @clock_lane: physical lane index of the clock lane * @num_data_lanes: number of data lanes */ struct v4l2_of_bus_mipi_csi2 { unsigned int flags; unsigned char data_lanes[4]; unsigned char clock_lane; unsigned short num_data_lanes; }; /** * struct v4l2_of_bus_parallel - parallel data bus data structure * @flags: media bus (V4L2_MBUS_*) flags * @bus_width: bus width in bits * @data_shift: data shift in bits */ struct v4l2_of_bus_parallel { unsigned int flags; unsigned char bus_width; unsigned char data_shift; }; /** * struct v4l2_of_endpoint - the endpoint data structure * @port: identifier (value of reg property) of a port this endpoint belongs to * @id: identifier (value of reg property) of this endpoint * @local_node: pointer to device_node of this endpoint * @remote: phandle to remote endpoint node * @bus_type: bus type * @bus: bus configuration data structure * @head: list head for this structure */ struct v4l2_of_endpoint { unsigned int port; unsigned int id; const struct device_node *local_node; const __be32 *remote; enum v4l2_mbus_type bus_type; union { struct v4l2_of_bus_parallel parallel; struct v4l2_of_bus_mipi_csi2 mipi_csi2; } bus; struct list_head head; }; #ifdef CONFIG_OF void v4l2_of_parse_endpoint(const struct device_node *node, struct v4l2_of_endpoint *link); struct device_node *v4l2_of_get_next_endpoint(const struct device_node *parent, struct device_node *previous); struct device_node *v4l2_of_get_remote_port_parent( const struct device_node *node); struct device_node *v4l2_of_get_remote_port(const struct device_node *node); #else /* CONFIG_OF */ static inline int v4l2_of_parse_endpoint(const struct device_node *node, struct v4l2_of_endpoint *link) { return -ENOSYS; } static inline struct device_node *v4l2_of_get_next_endpoint( const struct device_node *parent, struct device_node *previous) { return NULL; } static inline struct device_node *v4l2_of_get_remote_port_parent( const struct device_node *node) { return NULL; } static inline struct device_node *v4l2_of_get_remote_port( const struct device_node *node) { return NULL; } #endif /* CONFIG_OF */ #endif /* _V4L2_OF_H */