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//usr/src/linux-headers-5.4.0-216/include/linux/mfd/syscon.h
/* 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 <dong.aisheng@linaro.org> */ #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); #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); } #endif #endif /* __LINUX_MFD_SYSCON_H__ */