]>
Commit | Line | Data |
---|---|---|
fd9fdb78 PZ |
1 | /* |
2 | * OF graph binding parsing helpers | |
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 __LINUX_OF_GRAPH_H | |
15 | #define __LINUX_OF_GRAPH_H | |
16 | ||
01218bf1 | 17 | #include <linux/types.h> |
011d6f5c | 18 | #include <linux/errno.h> |
01218bf1 | 19 | |
f2a575f6 PZ |
20 | /** |
21 | * struct of_endpoint - the OF graph endpoint data structure | |
22 | * @port: identifier (value of reg property) of a port this endpoint belongs to | |
23 | * @id: identifier (value of reg property) of this endpoint | |
24 | * @local_node: pointer to device_node of this endpoint | |
25 | */ | |
26 | struct of_endpoint { | |
27 | unsigned int port; | |
28 | unsigned int id; | |
29 | const struct device_node *local_node; | |
30 | }; | |
31 | ||
ee890596 PZ |
32 | /** |
33 | * for_each_endpoint_of_node - iterate over every endpoint in a device node | |
34 | * @parent: parent device node containing ports and endpoints | |
35 | * @child: loop variable pointing to the current endpoint node | |
36 | * | |
37 | * When breaking out of the loop, of_node_put(child) has to be called manually. | |
38 | */ | |
39 | #define for_each_endpoint_of_node(parent, child) \ | |
40 | for (child = of_graph_get_next_endpoint(parent, NULL); child != NULL; \ | |
41 | child = of_graph_get_next_endpoint(parent, child)) | |
42 | ||
fd9fdb78 | 43 | #ifdef CONFIG_OF |
f2a575f6 PZ |
44 | int of_graph_parse_endpoint(const struct device_node *node, |
45 | struct of_endpoint *endpoint); | |
ac1e6958 | 46 | int of_graph_get_endpoint_count(const struct device_node *np); |
bfe446e3 | 47 | struct device_node *of_graph_get_port_by_id(struct device_node *node, u32 id); |
fd9fdb78 PZ |
48 | struct device_node *of_graph_get_next_endpoint(const struct device_node *parent, |
49 | struct device_node *previous); | |
8ccd0d0c HH |
50 | struct device_node *of_graph_get_endpoint_by_regs( |
51 | const struct device_node *parent, int port_reg, int reg); | |
4c9c3d59 KM |
52 | struct device_node *of_graph_get_remote_endpoint( |
53 | const struct device_node *node); | |
0ef472a9 | 54 | struct device_node *of_graph_get_port_parent(struct device_node *node); |
fd9fdb78 PZ |
55 | struct device_node *of_graph_get_remote_port_parent( |
56 | const struct device_node *node); | |
57 | struct device_node *of_graph_get_remote_port(const struct device_node *node); | |
b85ad494 RH |
58 | struct device_node *of_graph_get_remote_node(const struct device_node *node, |
59 | u32 port, u32 endpoint); | |
fd9fdb78 PZ |
60 | #else |
61 | ||
f2a575f6 | 62 | static inline int of_graph_parse_endpoint(const struct device_node *node, |
00fd9619 | 63 | struct of_endpoint *endpoint) |
f2a575f6 PZ |
64 | { |
65 | return -ENOSYS; | |
66 | } | |
67 | ||
ac1e6958 KM |
68 | static inline int of_graph_get_endpoint_count(const struct device_node *np) |
69 | { | |
70 | return 0; | |
71 | } | |
72 | ||
bfe446e3 PZ |
73 | static inline struct device_node *of_graph_get_port_by_id( |
74 | struct device_node *node, u32 id) | |
75 | { | |
76 | return NULL; | |
77 | } | |
78 | ||
fd9fdb78 PZ |
79 | static inline struct device_node *of_graph_get_next_endpoint( |
80 | const struct device_node *parent, | |
81 | struct device_node *previous) | |
82 | { | |
83 | return NULL; | |
84 | } | |
85 | ||
ce0bdb84 | 86 | static inline struct device_node *of_graph_get_endpoint_by_regs( |
8ccd0d0c HH |
87 | const struct device_node *parent, int port_reg, int reg) |
88 | { | |
89 | return NULL; | |
90 | } | |
91 | ||
4c9c3d59 KM |
92 | static inline struct device_node *of_graph_get_remote_endpoint( |
93 | const struct device_node *node) | |
94 | { | |
95 | return NULL; | |
96 | } | |
97 | ||
0ef472a9 KM |
98 | static inline struct device_node *of_graph_get_port_parent( |
99 | struct device_node *node) | |
100 | { | |
101 | return NULL; | |
102 | } | |
103 | ||
fd9fdb78 PZ |
104 | static inline struct device_node *of_graph_get_remote_port_parent( |
105 | const struct device_node *node) | |
106 | { | |
107 | return NULL; | |
108 | } | |
109 | ||
110 | static inline struct device_node *of_graph_get_remote_port( | |
111 | const struct device_node *node) | |
112 | { | |
113 | return NULL; | |
114 | } | |
b85ad494 RH |
115 | static inline struct device_node *of_graph_get_remote_node( |
116 | const struct device_node *node, | |
117 | u32 port, u32 endpoint) | |
118 | { | |
119 | return NULL; | |
120 | } | |
fd9fdb78 PZ |
121 | |
122 | #endif /* CONFIG_OF */ | |
123 | ||
124 | #endif /* __LINUX_OF_GRAPH_H */ |