Viewing file:  syscon.h (1.83 KB) -rw-r--r--
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* System Control Driver
*
* Copyright (C) 2012 Freescale Semiconductor, Inc.
* Copyright (C) 2012 Linaro Ltd.
*
* Author: Dong Aisheng <[email protected]>
*/
#ifndef __LINUX_MFD_SYSCON_H__
#define __LINUX_MFD_SYSCON_H__
#include <linux/err.h>
#include <linux/errno.h>
struct device_node;
#ifdef CONFIG_MFD_SYSCON
extern struct regmap *device_node_to_regmap(struct device_node *np);
extern struct regmap *syscon_node_to_regmap(struct device_node *np);
extern struct regmap *syscon_regmap_lookup_by_compatible(const char *s);
extern struct regmap *syscon_regmap_lookup_by_phandle(
struct device_node *np,
const char *property);
extern struct regmap *syscon_regmap_lookup_by_phandle_args(
struct device_node *np,
const char *property,
int arg_count,
unsigned int *out_args);
extern struct regmap *syscon_regmap_lookup_by_phandle_optional(
struct device_node *np,
const char *property);
#else
static inline struct regmap *device_node_to_regmap(struct device_node *np)
{
return ERR_PTR(-ENOTSUPP);
}
static inline struct regmap *syscon_node_to_regmap(struct device_node *np)
{
return ERR_PTR(-ENOTSUPP);
}
static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
{
return ERR_PTR(-ENOTSUPP);
}
static inline struct regmap *syscon_regmap_lookup_by_phandle(
struct device_node *np,
const char *property)
{
return ERR_PTR(-ENOTSUPP);
}
static inline struct regmap *syscon_regmap_lookup_by_phandle_args(
struct device_node *np,
const char *property,
int arg_count,
unsigned int *out_args)
{
return ERR_PTR(-ENOTSUPP);
}
static inline struct regmap *syscon_regmap_lookup_by_phandle_optional(
struct device_node *np,
const char *property)
{
return NULL;
}
#endif
#endif /* __LINUX_MFD_SYSCON_H__ */
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