1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * System Control Driver
4 *
5 * Copyright (C) 2012 Freescale Semiconductor, Inc.
6 * Copyright (C) 2012 Linaro Ltd.
7 *
8 * Author: Dong Aisheng <dong.aisheng@linaro.org>
9 */
10
11 #ifndef __LINUX_MFD_SYSCON_H__
12 #define __LINUX_MFD_SYSCON_H__
13
14 #include <linux/err.h>
15 #include <linux/errno.h>
16
17 struct device_node;
18
19 #ifdef CONFIG_MFD_SYSCON
20 struct regmap *device_node_to_regmap(struct device_node *np);
21 struct regmap *syscon_node_to_regmap(struct device_node *np);
22 struct regmap *syscon_regmap_lookup_by_compatible(const char *s);
23 struct regmap *syscon_regmap_lookup_by_phandle(struct device_node *np,
24 const char *property);
25 struct regmap *syscon_regmap_lookup_by_phandle_args(struct device_node *np,
26 const char *property,
27 int arg_count,
28 unsigned int *out_args);
29 struct regmap *syscon_regmap_lookup_by_phandle_optional(struct device_node *np,
30 const char *property);
31 int of_syscon_register_regmap(struct device_node *np,
32 struct regmap *regmap);
33 #else
device_node_to_regmap(struct device_node * np)34 static inline struct regmap *device_node_to_regmap(struct device_node *np)
35 {
36 return ERR_PTR(-ENOTSUPP);
37 }
38
syscon_node_to_regmap(struct device_node * np)39 static inline struct regmap *syscon_node_to_regmap(struct device_node *np)
40 {
41 return ERR_PTR(-ENOTSUPP);
42 }
43
syscon_regmap_lookup_by_compatible(const char * s)44 static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
45 {
46 return ERR_PTR(-ENOTSUPP);
47 }
48
syscon_regmap_lookup_by_phandle(struct device_node * np,const char * property)49 static inline struct regmap *syscon_regmap_lookup_by_phandle(
50 struct device_node *np,
51 const char *property)
52 {
53 return ERR_PTR(-ENOTSUPP);
54 }
55
syscon_regmap_lookup_by_phandle_args(struct device_node * np,const char * property,int arg_count,unsigned int * out_args)56 static inline struct regmap *syscon_regmap_lookup_by_phandle_args(
57 struct device_node *np,
58 const char *property,
59 int arg_count,
60 unsigned int *out_args)
61 {
62 return ERR_PTR(-ENOTSUPP);
63 }
64
syscon_regmap_lookup_by_phandle_optional(struct device_node * np,const char * property)65 static inline struct regmap *syscon_regmap_lookup_by_phandle_optional(
66 struct device_node *np,
67 const char *property)
68 {
69 return NULL;
70 }
71
of_syscon_register_regmap(struct device_node * np,struct regmap * regmap)72 static inline int of_syscon_register_regmap(struct device_node *np,
73 struct regmap *regmap)
74 {
75 return -EOPNOTSUPP;
76 }
77
78 #endif
79
80 #endif /* __LINUX_MFD_SYSCON_H__ */
81