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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 | |
84 | static inline int v4l2_of_parse_endpoint(const struct device_node *node, |
85 | struct v4l2_of_endpoint *link) |
86 | { |
87 | return -ENOSYS; |
88 | } |
89 | |
90 | static 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 | |
97 | static inline struct device_node *v4l2_of_get_remote_port_parent( |
98 | const struct device_node *node) |
99 | { |
100 | return NULL; |
101 | } |
102 | |
103 | static 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 |
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