xref: /openbmc/u-boot/include/hwconfig.h (revision e2a53458)
1 /*
2  * An inteface for configuring a hardware via u-boot environment.
3  *
4  * Copyright (c) 2009  MontaVista Software, Inc.
5  * Copyright 2011 Freescale Semiconductor, Inc.
6  *
7  * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License as
11  * published by the Free Software Foundation; either version 2 of
12  * the License, or (at your option) any later version.
13  */
14 
15 #ifndef _HWCONFIG_H
16 #define _HWCONFIG_H
17 
18 #include <linux/types.h>
19 #include <asm/errno.h>
20 
21 #ifdef CONFIG_HWCONFIG
22 
23 extern int hwconfig_f(const char *opt, char *buf);
24 extern const char *hwconfig_arg_f(const char *opt, size_t *arglen, char *buf);
25 extern int hwconfig_arg_cmp_f(const char *opt, const char *arg, char *buf);
26 extern int hwconfig_sub_f(const char *opt, const char *subopt, char *buf);
27 extern const char *hwconfig_subarg_f(const char *opt, const char *subopt,
28 				     size_t *subarglen, char *buf);
29 extern int hwconfig_subarg_cmp_f(const char *opt, const char *subopt,
30 				 const char *subarg, char *buf);
31 #else
32 
33 static inline int hwconfig_f(const char *opt, char *buf)
34 {
35 	return -ENOSYS;
36 }
37 
38 static inline const char *hwconfig_arg_f(const char *opt, size_t *arglen,
39 					 char *buf)
40 {
41 	*arglen = 0;
42 	return "";
43 }
44 
45 static inline int hwconfig_arg_cmp_f(const char *opt, const char *arg,
46 				     char *buf)
47 {
48 	return -ENOSYS;
49 }
50 
51 static inline int hwconfig_sub_f(const char *opt, const char *subopt, char *buf)
52 {
53 	return -ENOSYS;
54 }
55 
56 static inline const char *hwconfig_subarg_f(const char *opt, const char *subopt,
57 					    size_t *subarglen, char *buf)
58 {
59 	*subarglen = 0;
60 	return "";
61 }
62 
63 static inline int hwconfig_subarg_cmp_f(const char *opt, const char *subopt,
64 					const char *subarg, char *buf)
65 {
66 	return -ENOSYS;
67 }
68 
69 #endif /* CONFIG_HWCONFIG */
70 
71 static inline int hwconfig(const char *opt)
72 {
73 	return hwconfig_f(opt, NULL);
74 }
75 
76 static inline const char *hwconfig_arg(const char *opt, size_t *arglen)
77 {
78 	return hwconfig_arg_f(opt, arglen, NULL);
79 }
80 
81 static inline int hwconfig_arg_cmp(const char *opt, const char *arg)
82 {
83 	return hwconfig_arg_cmp_f(opt, arg, NULL);
84 }
85 
86 static inline int hwconfig_sub(const char *opt, const char *subopt)
87 {
88 	return hwconfig_sub_f(opt, subopt, NULL);
89 }
90 
91 static inline const char *hwconfig_subarg(const char *opt, const char *subopt,
92 					  size_t *subarglen)
93 {
94 	return hwconfig_subarg_f(opt, subopt, subarglen, NULL);
95 }
96 
97 static inline int hwconfig_subarg_cmp(const char *opt, const char *subopt,
98 				      const char *subarg)
99 {
100 	return hwconfig_subarg_cmp_f(opt, subopt, subarg, NULL);
101 }
102 
103 #endif /* _HWCONFIG_H */
104