1/* 2 * System Control Driver 3 * 4 * Copyright (C) 2012 Freescale Semiconductor, Inc. 5 * Copyright (C) 2012 Linaro Ltd. 6 * 7 * Author: Dong Aisheng <dong.aisheng@linaro.org> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 */ 14 15#ifndef __LINUX_MFD_SYSCON_H__ 16#define __LINUX_MFD_SYSCON_H__ 17 18#include <linux/err.h> 19#include <linux/errno.h> 20 21struct device_node; 22 23#ifdef CONFIG_MFD_SYSCON 24extern struct regmap *syscon_node_to_regmap(struct device_node *np); 25extern struct regmap *syscon_regmap_lookup_by_compatible(const char *s); 26extern struct regmap *syscon_regmap_lookup_by_pdevname(const char *s); 27extern struct regmap *syscon_regmap_lookup_by_phandle( 28 struct device_node *np, 29 const char *property); 30#else 31static inline struct regmap *syscon_node_to_regmap(struct device_node *np) 32{ 33 return ERR_PTR(-ENOTSUPP); 34} 35 36static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s) 37{ 38 return ERR_PTR(-ENOTSUPP); 39} 40 41static inline struct regmap *syscon_regmap_lookup_by_pdevname(const char *s) 42{ 43 return ERR_PTR(-ENOTSUPP); 44} 45 46static inline struct regmap *syscon_regmap_lookup_by_phandle( 47 struct device_node *np, 48 const char *property) 49{ 50 return ERR_PTR(-ENOTSUPP); 51} 52#endif 53 54#endif /* __LINUX_MFD_SYSCON_H__ */ 55