LXR linux/include/linux/mfd/syscon.h

   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
  17struct device_node;
  18
  19#ifdef CONFIG_MFD_SYSCON
  20extern struct regmap *device_node_to_regmap(struct device_node *np);
  21extern struct regmap *syscon_node_to_regmap(struct device_node *np);
  22extern struct regmap *syscon_regmap_lookup_by_compatible(const char *s);
  23extern struct regmap *syscon_regmap_lookup_by_phandle(
  24                                        struct device_node *np,
  25                                        const char *property);
  26extern 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
  32static inline struct regmap *device_node_to_regmap(struct device_node *np)
  33{
  34        return ERR_PTR(-ENOTSUPP);
  35}
  36
  37static inline struct regmap *syscon_node_to_regmap(struct device_node *np)
  38{
  39        return ERR_PTR(-ENOTSUPP);
  40}
  41
  42static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
  43{
  44        return ERR_PTR(-ENOTSUPP);
  45}
  46
  47static 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
  54static 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