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