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 <[email protected]> 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 17 struct device_node; 18 19 #ifdef CONFIG_MFD_SYSCON 20 extern struct regmap *syscon_node_to_regmap(struct device_node *np); 21 extern struct regmap *syscon_regmap_lookup_by_compatible(const char *s); 22 extern struct regmap *syscon_regmap_lookup_by_phandle( 23 struct device_node *np, 24 const char *property); 25 #else 26 static inline struct regmap *syscon_node_to_regmap(struct device_node *np) 27 { 28 return ERR_PTR(-ENOTSUPP); 29 } 30 31 static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s) 32 { 33 return ERR_PTR(-ENOTSUPP); 34 } 35 36 static inline struct regmap *syscon_regmap_lookup_by_phandle( 37 struct device_node *np, 38 const char *property) 39 { 40 return ERR_PTR(-ENOTSUPP); 41 } 42 #endif 43 44 #endif /* __LINUX_MFD_SYSCON_H__ */ 45