1 /* 2 * V4L2 OF binding parsing library 3 * 4 * Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd. 5 * Author: Sylwester Nawrocki <s.nawrocki@samsung.com> 6 * 7 * Copyright (C) 2012 Renesas Electronics Corp. 8 * Author: Guennadi Liakhovetski <g.liakhovetski@gmx.de> 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of version 2 of the GNU General Public License as 12 * published by the Free Software Foundation. 13 */ 14 #ifndef _V4L2_OF_H 15 #define _V4L2_OF_H 16 17 #include <linux/list.h> 18 #include <linux/types.h> 19 #include <linux/errno.h> 20 21 #include <media/v4l2-mediabus.h> 22 23 struct device_node; 24 25 /** 26 * struct v4l2_of_bus_mipi_csi2 - MIPI CSI-2 bus data structure 27 * @flags: media bus (V4L2_MBUS_*) flags 28 * @data_lanes: an array of physical data lane indexes 29 * @clock_lane: physical lane index of the clock lane 30 * @num_data_lanes: number of data lanes 31 */ 32 struct v4l2_of_bus_mipi_csi2 { 33 unsigned int flags; 34 unsigned char data_lanes[4]; 35 unsigned char clock_lane; 36 unsigned short num_data_lanes; 37 }; 38 39 /** 40 * struct v4l2_of_bus_parallel - parallel data bus data structure 41 * @flags: media bus (V4L2_MBUS_*) flags 42 * @bus_width: bus width in bits 43 * @data_shift: data shift in bits 44 */ 45 struct v4l2_of_bus_parallel { 46 unsigned int flags; 47 unsigned char bus_width; 48 unsigned char data_shift; 49 }; 50 51 /** 52 * struct v4l2_of_endpoint - the endpoint data structure 53 * @port: identifier (value of reg property) of a port this endpoint belongs to 54 * @id: identifier (value of reg property) of this endpoint 55 * @local_node: pointer to device_node of this endpoint 56 * @remote: phandle to remote endpoint node 57 * @bus_type: bus type 58 * @bus: bus configuration data structure 59 * @head: list head for this structure 60 */ 61 struct v4l2_of_endpoint { 62 unsigned int port; 63 unsigned int id; 64 const struct device_node *local_node; 65 const __be32 *remote; 66 enum v4l2_mbus_type bus_type; 67 union { 68 struct v4l2_of_bus_parallel parallel; 69 struct v4l2_of_bus_mipi_csi2 mipi_csi2; 70 } bus; 71 struct list_head head; 72 }; 73 74 #ifdef CONFIG_OF 75 void v4l2_of_parse_endpoint(const struct device_node *node, 76 struct v4l2_of_endpoint *link); 77 struct device_node *v4l2_of_get_next_endpoint(const struct device_node *parent, 78 struct device_node *previous); 79 struct device_node *v4l2_of_get_remote_port_parent( 80 const struct device_node *node); 81 struct device_node *v4l2_of_get_remote_port(const struct device_node *node); 82 #else /* CONFIG_OF */ 83 v4l2_of_parse_endpoint(const struct device_node * node,struct v4l2_of_endpoint * link)84static inline int v4l2_of_parse_endpoint(const struct device_node *node, 85 struct v4l2_of_endpoint *link) 86 { 87 return -ENOSYS; 88 } 89 v4l2_of_get_next_endpoint(const struct device_node * parent,struct device_node * previous)90static inline struct device_node *v4l2_of_get_next_endpoint( 91 const struct device_node *parent, 92 struct device_node *previous) 93 { 94 return NULL; 95 } 96 v4l2_of_get_remote_port_parent(const struct device_node * node)97static inline struct device_node *v4l2_of_get_remote_port_parent( 98 const struct device_node *node) 99 { 100 return NULL; 101 } 102 v4l2_of_get_remote_port(const struct device_node * node)103static inline struct device_node *v4l2_of_get_remote_port( 104 const struct device_node *node) 105 { 106 return NULL; 107 } 108 109 #endif /* CONFIG_OF */ 110 111 #endif /* _V4L2_OF_H */ 112