1 /* 2 * System Control Driver 3 * 4 * Copyright (C) 2012 Freescale Semiconductor, Inc. 5 * Copyright (C) 2012 Linaro Ltd. 6 * 7 * Author: Dong Aisheng <[email protected]> 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 20 struct device_node; 21 22 #ifdef CONFIG_MFD_SYSCON 23 extern struct regmap *syscon_node_to_regmap(struct device_node *np); 24 extern struct regmap *syscon_regmap_lookup_by_compatible(const char *s); 25 extern struct regmap *syscon_regmap_lookup_by_pdevname(const char *s); 26 extern struct regmap *syscon_regmap_lookup_by_phandle( 27 struct device_node *np, 28 const char *property); 29 #else 30 static inline struct regmap *syscon_node_to_regmap(struct device_node *np) 31 { 32 return ERR_PTR(-ENOTSUPP); 33 } 34 35 static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s) 36 { 37 return ERR_PTR(-ENOTSUPP); 38 } 39 40 static inline struct regmap *syscon_regmap_lookup_by_pdevname(const char *s) 41 { 42 return ERR_PTR(-ENOTSUPP); 43 } 44 45 static inline struct regmap *syscon_regmap_lookup_by_phandle( 46 struct device_node *np, 47 const char *property) 48 { 49 return ERR_PTR(-ENOTSUPP); 50 } 51 #endif 52 53 #endif /* __LINUX_MFD_SYSCON_H__ */ 54