LXR linux/include/media/v4l2-of.h

   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
  24struct 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 */
  33struct 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 */
  46struct 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 */
  59struct 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
  70int v4l2_of_parse_endpoint(const struct device_node *node,
  71                           struct v4l2_of_endpoint *endpoint);
  72#else /* CONFIG_OF */
  73
  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