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 | extern struct regmap *syscon_regmap_lookup_by_phandle_optional( |
32 | struct device_node *np, |
33 | const char *property); |
34 | #else |
35 | static inline struct regmap *device_node_to_regmap(struct device_node *np) |
36 | { |
37 | return ERR_PTR(-ENOTSUPP); |
38 | } |
39 | |
40 | static inline struct regmap *syscon_node_to_regmap(struct device_node *np) |
41 | { |
42 | return ERR_PTR(-ENOTSUPP); |
43 | } |
44 | |
45 | static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s) |
46 | { |
47 | return ERR_PTR(-ENOTSUPP); |
48 | } |
49 | |
50 | static inline struct regmap *syscon_regmap_lookup_by_phandle( |
51 | struct device_node *np, |
52 | const char *property) |
53 | { |
54 | return ERR_PTR(-ENOTSUPP); |
55 | } |
56 | |
57 | static inline struct regmap *syscon_regmap_lookup_by_phandle_args( |
58 | struct device_node *np, |
59 | const char *property, |
60 | int arg_count, |
61 | unsigned int *out_args) |
62 | { |
63 | return ERR_PTR(-ENOTSUPP); |
64 | } |
65 | |
66 | static inline struct regmap *syscon_regmap_lookup_by_phandle_optional( |
67 | struct device_node *np, |
68 | const char *property) |
69 | { |
70 | return NULL; |
71 | } |
72 | |
73 | #endif |
74 | |
75 | #endif /* __LINUX_MFD_SYSCON_H__ */ |
76 | |