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 #include <linux/of_graph.h> 21 22 #include <media/v4l2-mediabus.h> 23 24 struct device_node; 25 26 /** 27 * struct v4l2_of_bus_mipi_csi2 - MIPI CSI-2 bus data structure 28 * @flags: media bus (V4L2_MBUS_*) flags 29 * @data_lanes: an array of physical data lane indexes 30 * @clock_lane: physical lane index of the clock lane 31 * @num_data_lanes: number of data lanes 32 */ 33 struct v4l2_of_bus_mipi_csi2 { 34 unsigned int flags; 35 unsigned char data_lanes[4]; 36 unsigned char clock_lane; 37 unsigned short num_data_lanes; 38 }; 39 40 /** 41 * struct v4l2_of_bus_parallel - parallel data bus data structure 42 * @flags: media bus (V4L2_MBUS_*) flags 43 * @bus_width: bus width in bits 44 * @data_shift: data shift in bits 45 */ 46 struct v4l2_of_bus_parallel { 47 unsigned int flags; 48 unsigned char bus_width; 49 unsigned char data_shift; 50 }; 51 52 /** 53 * struct v4l2_of_endpoint - the endpoint data structure 54 * @base: struct of_endpoint containing port, id, and local of_node 55 * @bus_type: bus type 56 * @bus: bus configuration data structure 57 * @head: list head for this structure 58 */ 59 struct v4l2_of_endpoint { 60 struct of_endpoint base; 61 enum v4l2_mbus_type bus_type; 62 union { 63 struct v4l2_of_bus_parallel parallel; 64 struct v4l2_of_bus_mipi_csi2 mipi_csi2; 65 } bus; 66 struct list_head head; 67 }; 68 69 #ifdef CONFIG_OF 70 int v4l2_of_parse_endpoint(const struct device_node *node, 71 struct v4l2_of_endpoint *endpoint); 72 #else /* CONFIG_OF */ 73 v4l2_of_parse_endpoint(const struct device_node * node,struct v4l2_of_endpoint * link)74static inline int v4l2_of_parse_endpoint(const struct device_node *node, 75 struct v4l2_of_endpoint *link) 76 { 77 return -ENOSYS; 78 } 79 80 #endif /* CONFIG_OF */ 81 82 #endif /* _V4L2_OF_H */ 83