cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

syscon.h (1871B)

      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);
     31extern struct regmap *syscon_regmap_lookup_by_phandle_optional(
     32					struct device_node *np,
     33					const char *property);
     34#else
     35static inline struct regmap *device_node_to_regmap(struct device_node *np)
     36{
     37	return ERR_PTR(-ENOTSUPP);
     38}
     39
     40static inline struct regmap *syscon_node_to_regmap(struct device_node *np)
     41{
     42	return ERR_PTR(-ENOTSUPP);
     43}
     44
     45static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
     46{
     47	return ERR_PTR(-ENOTSUPP);
     48}
     49
     50static 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
     57static 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
     66static 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__ */