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 extern struct regmap *device_node_to_regmap(struct device_node *np);
21 extern struct regmap *syscon_node_to_regmap(struct device_node *np);
22 extern struct regmap *syscon_regmap_lookup_by_compatible(const char *s);
23 extern struct regmap *syscon_regmap_lookup_by_phandle(
24 struct device_node *np,
25 const char *property);
26 extern struct regmap *syscon_regmap_lookup_by_phandle_args(
27 struct device_node *np,
28 const char *property,
29 int arg_count,
30 unsigned int *out_args);
31 #else
device_node_to_regmap(struct device_node * np)32 static inline struct regmap *device_node_to_regmap(struct device_node *np)
33 {
34 return ERR_PTR(-ENOTSUPP);
35 }
36
syscon_node_to_regmap(struct device_node * np)37 static inline struct regmap *syscon_node_to_regmap(struct device_node *np)
38 {
39 return ERR_PTR(-ENOTSUPP);
40 }
41
syscon_regmap_lookup_by_compatible(const char * s)42 static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
43 {
44 return ERR_PTR(-ENOTSUPP);
45 }
46
syscon_regmap_lookup_by_phandle(struct device_node * np,const char * property)47 static inline struct regmap *syscon_regmap_lookup_by_phandle(
48 struct device_node *np,
49 const char *property)
50 {
51 return ERR_PTR(-ENOTSUPP);
52 }
53
syscon_regmap_lookup_by_phandle_args(struct device_node * np,const char * property,int arg_count,unsigned int * out_args)54 static inline struct regmap *syscon_regmap_lookup_by_phandle_args(
55 struct device_node *np,
56 const char *property,
57 int arg_count,
58 unsigned int *out_args)
59 {
60 return ERR_PTR(-ENOTSUPP);
61 }
62 #endif
63
64 #endif /* __LINUX_MFD_SYSCON_H__ */
65