diff options
Diffstat (limited to 'include/linux/mfd/syscon.h')
-rw-r--r-- | include/linux/mfd/syscon.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/include/linux/mfd/syscon.h b/include/linux/mfd/syscon.h new file mode 100644 index 000000000..fecc2fa2a --- /dev/null +++ b/include/linux/mfd/syscon.h @@ -0,0 +1,75 @@ +/* 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); +extern struct regmap *syscon_regmap_lookup_by_phandle_args( + struct device_node *np, + const char *property, + int arg_count, + unsigned int *out_args); +extern struct regmap *syscon_regmap_lookup_by_phandle_optional( + 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); +} + +static inline struct regmap *syscon_regmap_lookup_by_phandle_args( + struct device_node *np, + const char *property, + int arg_count, + unsigned int *out_args) +{ + return ERR_PTR(-ENOTSUPP); +} + +static inline struct regmap *syscon_regmap_lookup_by_phandle_optional( + struct device_node *np, + const char *property) +{ + return NULL; +} + +#endif + +#endif /* __LINUX_MFD_SYSCON_H__ */ |