diff options
Diffstat (limited to 'include/linux/i2c.h')
| -rw-r--r-- | include/linux/i2c.h | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/include/linux/i2c.h b/include/linux/i2c.h index e988fa935b3c..2ab11dc38077 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -447,11 +447,13 @@ static inline void i2c_set_adapdata(struct i2c_adapter *dev, void *data) static inline struct i2c_adapter * i2c_parent_is_i2c_adapter(const struct i2c_adapter *adapter) { +#if IS_ENABLED(I2C_MUX) struct device *parent = adapter->dev.parent; if (parent != NULL && parent->type == &i2c_adapter_type) return to_i2c_adapter(parent); else +#endif return NULL; } @@ -542,10 +544,24 @@ static inline int i2c_adapter_id(struct i2c_adapter *adap) #endif /* I2C */ -#if IS_ENABLED(CONFIG_ACPI_I2C) -extern void acpi_i2c_register_devices(struct i2c_adapter *adap); +#if IS_ENABLED(CONFIG_OF) +/* must call put_device() when done with returned i2c_client device */ +extern struct i2c_client *of_find_i2c_device_by_node(struct device_node *node); + +/* must call put_device() when done with returned i2c_adapter device */ +extern struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node); + #else -static inline void acpi_i2c_register_devices(struct i2c_adapter *adap) {} -#endif + +static inline struct i2c_client *of_find_i2c_device_by_node(struct device_node *node) +{ + return NULL; +} + +static inline struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node) +{ + return NULL; +} +#endif /* CONFIG_OF */ #endif /* _LINUX_I2C_H */ |