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Commit df73de9b authored by Peter Chen's avatar Peter Chen Committed by Lee Jones
Browse files

mfd: syscon: Return -ENOSYS if CONFIG_MFD_SYSCON is not enabled 



Some platforms may not define CONFIG_MFD_SYSCON (or haven't syscon),
it can fix build error for these platforms.

Signed-off-by: default avatarPeter Chen <peter.chen@freescale.com>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent d460a6f3

include/linux/mfd/syscon.h

+25 −0
Original line number Diff line number Diff line
@@ -17,10 +17,35 @@ 


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__ */