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 *syscon_node_to_regmap(struct device_node *np);
  21extern struct regmap *syscon_regmap_lookup_by_compatible(const char *s);
  22extern struct regmap *syscon_regmap_lookup_by_phandle(
  23                                        struct device_node *np,
  24                                        const char *property);
  25#else
  26static inline struct regmap *syscon_node_to_regmap(struct device_node *np)
  27{
  28        return ERR_PTR(-ENOTSUPP);
  29}
  30
  31static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
  32{
  33        return ERR_PTR(-ENOTSUPP);
  34}
  35
  36static inline struct regmap *syscon_regmap_lookup_by_phandle(
  37                                        struct device_node *np,
  38                                        const char *property)
  39{
  40        return ERR_PTR(-ENOTSUPP);
  41}
  42#endif
  43
  44#endif /* __LINUX_MFD_SYSCON_H__ */
  45