diff options
Diffstat (limited to 'kernel/include/linux/mfd/syscon.h')
-rw-r--r-- | kernel/include/linux/mfd/syscon.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/kernel/include/linux/mfd/syscon.h b/kernel/include/linux/mfd/syscon.h new file mode 100644 index 000000000..75e543b78 --- /dev/null +++ b/kernel/include/linux/mfd/syscon.h @@ -0,0 +1,53 @@ +/* + * System Control Driver + * + * Copyright (C) 2012 Freescale Semiconductor, Inc. + * Copyright (C) 2012 Linaro Ltd. + * + * Author: Dong Aisheng <dong.aisheng@linaro.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef __LINUX_MFD_SYSCON_H__ +#define __LINUX_MFD_SYSCON_H__ + +#include <linux/err.h> + +struct device_node; + +#ifdef CONFIG_MFD_SYSCON +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_pdevname(const char *s); +extern struct regmap *syscon_regmap_lookup_by_phandle( + struct device_node *np, + const char *property); +#else +static inline struct regmap *syscon_node_to_regmap(struct device_node *np) +{ + return ERR_PTR(-ENOSYS); +} + +static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s) +{ + return ERR_PTR(-ENOSYS); +} + +static inline struct regmap *syscon_regmap_lookup_by_pdevname(const char *s) +{ + return ERR_PTR(-ENOSYS); +} + +static inline struct regmap *syscon_regmap_lookup_by_phandle( + struct device_node *np, + const char *property) +{ + return ERR_PTR(-ENOSYS); +} +#endif + +#endif /* __LINUX_MFD_SYSCON_H__ */ |