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i2c: remove unneeded 'extern' from function declatations
According to coding-style.rst, extern should not be specified for exported functions. Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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@ -50,8 +50,8 @@ struct property_entry;
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* transmit an arbitrary number of messages without interruption.
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* @count must be be less than 64k since msg.len is u16.
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*/
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extern int i2c_transfer_buffer_flags(const struct i2c_client *client,
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char *buf, int count, u16 flags);
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int i2c_transfer_buffer_flags(const struct i2c_client *client,
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char *buf, int count, u16 flags);
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/**
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* i2c_master_recv - issue a single I2C message in master receive mode
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@ -115,11 +115,9 @@ static inline int i2c_master_send_dmasafe(const struct i2c_client *client,
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/* Transfer num messages.
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*/
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extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
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int num);
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int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num);
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/* Unlocked flavor */
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extern int __i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
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int num);
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int __i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num);
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/* This is the very generalized SMBus access routine. You probably do not
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want to use this, though; one of the functions below may be much easier,
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@ -138,16 +136,14 @@ s32 __i2c_smbus_xfer(struct i2c_adapter *adapter, u16 addr,
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/* Now follow the 'nice' access routines. These also document the calling
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conventions of i2c_smbus_xfer. */
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extern s32 i2c_smbus_read_byte(const struct i2c_client *client);
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extern s32 i2c_smbus_write_byte(const struct i2c_client *client, u8 value);
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extern s32 i2c_smbus_read_byte_data(const struct i2c_client *client,
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u8 command);
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extern s32 i2c_smbus_write_byte_data(const struct i2c_client *client,
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u8 command, u8 value);
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extern s32 i2c_smbus_read_word_data(const struct i2c_client *client,
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u8 command);
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extern s32 i2c_smbus_write_word_data(const struct i2c_client *client,
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u8 command, u16 value);
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s32 i2c_smbus_read_byte(const struct i2c_client *client);
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s32 i2c_smbus_write_byte(const struct i2c_client *client, u8 value);
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s32 i2c_smbus_read_byte_data(const struct i2c_client *client, u8 command);
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s32 i2c_smbus_write_byte_data(const struct i2c_client *client,
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u8 command, u8 value);
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s32 i2c_smbus_read_word_data(const struct i2c_client *client, u8 command);
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s32 i2c_smbus_write_word_data(const struct i2c_client *client,
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u8 command, u16 value);
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static inline s32
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i2c_smbus_read_word_swapped(const struct i2c_client *client, u8 command)
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@ -165,19 +161,18 @@ i2c_smbus_write_word_swapped(const struct i2c_client *client,
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}
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/* Returns the number of read bytes */
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extern s32 i2c_smbus_read_block_data(const struct i2c_client *client,
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u8 command, u8 *values);
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extern s32 i2c_smbus_write_block_data(const struct i2c_client *client,
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u8 command, u8 length, const u8 *values);
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s32 i2c_smbus_read_block_data(const struct i2c_client *client,
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u8 command, u8 *values);
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s32 i2c_smbus_write_block_data(const struct i2c_client *client,
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u8 command, u8 length, const u8 *values);
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/* Returns the number of read bytes */
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extern s32 i2c_smbus_read_i2c_block_data(const struct i2c_client *client,
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u8 command, u8 length, u8 *values);
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extern s32 i2c_smbus_write_i2c_block_data(const struct i2c_client *client,
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u8 command, u8 length,
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const u8 *values);
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extern s32
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i2c_smbus_read_i2c_block_data_or_emulated(const struct i2c_client *client,
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u8 command, u8 length, u8 *values);
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s32 i2c_smbus_read_i2c_block_data(const struct i2c_client *client,
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u8 command, u8 length, u8 *values);
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s32 i2c_smbus_write_i2c_block_data(const struct i2c_client *client,
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u8 command, u8 length, const u8 *values);
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s32 i2c_smbus_read_i2c_block_data_or_emulated(const struct i2c_client *client,
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u8 command, u8 length,
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u8 *values);
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int i2c_get_device_id(const struct i2c_client *client,
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struct i2c_device_identity *id);
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#endif /* I2C */
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@ -337,10 +332,10 @@ struct i2c_client {
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};
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#define to_i2c_client(d) container_of(d, struct i2c_client, dev)
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extern struct i2c_client *i2c_verify_client(struct device *dev);
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extern struct i2c_adapter *i2c_verify_adapter(struct device *dev);
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extern const struct i2c_device_id *i2c_match_id(const struct i2c_device_id *id,
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const struct i2c_client *client);
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struct i2c_client *i2c_verify_client(struct device *dev);
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struct i2c_adapter *i2c_verify_adapter(struct device *dev);
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const struct i2c_device_id *i2c_match_id(const struct i2c_device_id *id,
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const struct i2c_client *client);
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static inline struct i2c_client *kobj_to_i2c_client(struct kobject *kobj)
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{
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@ -369,9 +364,9 @@ enum i2c_slave_event {
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I2C_SLAVE_STOP,
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};
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extern int i2c_slave_register(struct i2c_client *client, i2c_slave_cb_t slave_cb);
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extern int i2c_slave_unregister(struct i2c_client *client);
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extern bool i2c_detect_slave_mode(struct device *dev);
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int i2c_slave_register(struct i2c_client *client, i2c_slave_cb_t slave_cb);
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int i2c_slave_unregister(struct i2c_client *client);
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bool i2c_detect_slave_mode(struct device *dev);
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static inline int i2c_slave_event(struct i2c_client *client,
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enum i2c_slave_event event, u8 *val)
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@ -440,10 +435,10 @@ struct i2c_board_info {
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* with integrated I2C, a config eeprom, sensors, and a codec that's
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* used in conjunction with the primary hardware.
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*/
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extern struct i2c_client *
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struct i2c_client *
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i2c_new_device(struct i2c_adapter *adap, struct i2c_board_info const *info);
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extern struct i2c_client *
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struct i2c_client *
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i2c_new_client_device(struct i2c_adapter *adap, struct i2c_board_info const *info);
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/* If you don't know the exact address of an I2C device, use this variant
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@ -452,33 +447,33 @@ i2c_new_client_device(struct i2c_adapter *adap, struct i2c_board_info const *inf
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* it must return 1 on successful probe, 0 otherwise. If it is not provided,
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* a default probing method is used.
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*/
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extern struct i2c_client *
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struct i2c_client *
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i2c_new_scanned_device(struct i2c_adapter *adap,
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struct i2c_board_info *info,
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unsigned short const *addr_list,
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int (*probe)(struct i2c_adapter *adap, unsigned short addr));
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extern struct i2c_client *
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struct i2c_client *
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i2c_new_probed_device(struct i2c_adapter *adap,
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struct i2c_board_info *info,
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unsigned short const *addr_list,
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int (*probe)(struct i2c_adapter *adap, unsigned short addr));
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/* Common custom probe functions */
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extern int i2c_probe_func_quick_read(struct i2c_adapter *adap, unsigned short addr);
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int i2c_probe_func_quick_read(struct i2c_adapter *adap, unsigned short addr);
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extern struct i2c_client *
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struct i2c_client *
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i2c_new_dummy_device(struct i2c_adapter *adapter, u16 address);
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extern struct i2c_client *
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struct i2c_client *
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devm_i2c_new_dummy_device(struct device *dev, struct i2c_adapter *adap, u16 address);
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extern struct i2c_client *
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struct i2c_client *
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i2c_new_ancillary_device(struct i2c_client *client,
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const char *name,
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u16 default_addr);
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const char *name,
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u16 default_addr);
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extern void i2c_unregister_device(struct i2c_client *client);
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void i2c_unregister_device(struct i2c_client *client);
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#endif /* I2C */
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/* Mainboard arch_initcall() code should register all its I2C devices.
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@ -486,7 +481,7 @@ extern void i2c_unregister_device(struct i2c_client *client);
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* Modules for add-on boards must use other calls.
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*/
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#ifdef CONFIG_I2C_BOARDINFO
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extern int
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int
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i2c_register_board_info(int busnum, struct i2c_board_info const *info,
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unsigned n);
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#else
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@ -840,12 +835,12 @@ static inline void i2c_mark_adapter_resumed(struct i2c_adapter *adap)
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/* administration...
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*/
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#if IS_ENABLED(CONFIG_I2C)
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extern int i2c_add_adapter(struct i2c_adapter *adap);
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extern void i2c_del_adapter(struct i2c_adapter *adap);
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extern int i2c_add_numbered_adapter(struct i2c_adapter *adap);
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int i2c_add_adapter(struct i2c_adapter *adap);
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void i2c_del_adapter(struct i2c_adapter *adap);
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int i2c_add_numbered_adapter(struct i2c_adapter *adap);
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extern int i2c_register_driver(struct module *owner, struct i2c_driver *driver);
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extern void i2c_del_driver(struct i2c_driver *driver);
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int i2c_register_driver(struct module *owner, struct i2c_driver *driver);
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void i2c_del_driver(struct i2c_driver *driver);
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/* use a define to avoid include chaining to get THIS_MODULE */
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#define i2c_add_driver(driver) \
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@ -858,12 +853,12 @@ static inline bool i2c_client_has_driver(struct i2c_client *client)
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/* call the i2c_client->command() of all attached clients with
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* the given arguments */
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extern void i2c_clients_command(struct i2c_adapter *adap,
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unsigned int cmd, void *arg);
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void i2c_clients_command(struct i2c_adapter *adap,
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unsigned int cmd, void *arg);
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extern struct i2c_adapter *i2c_get_adapter(int nr);
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extern void i2c_put_adapter(struct i2c_adapter *adap);
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extern unsigned int i2c_adapter_depth(struct i2c_adapter *adapter);
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struct i2c_adapter *i2c_get_adapter(int nr);
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void i2c_put_adapter(struct i2c_adapter *adap);
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unsigned int i2c_adapter_depth(struct i2c_adapter *adapter);
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void i2c_parse_fw_timings(struct device *dev, struct i2c_timings *t, bool use_defaults);
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@ -935,15 +930,15 @@ int i2c_handle_smbus_host_notify(struct i2c_adapter *adap, unsigned short addr);
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#if IS_ENABLED(CONFIG_OF)
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/* must call put_device() when done with returned i2c_client device */
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extern struct i2c_client *of_find_i2c_device_by_node(struct device_node *node);
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struct i2c_client *of_find_i2c_device_by_node(struct device_node *node);
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/* must call put_device() when done with returned i2c_adapter device */
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extern struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node);
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struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node);
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/* must call i2c_put_adapter() when done with returned i2c_adapter device */
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struct i2c_adapter *of_get_i2c_adapter_by_node(struct device_node *node);
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extern const struct of_device_id
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const struct of_device_id
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*i2c_of_match_device(const struct of_device_id *matches,
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struct i2c_client *client);
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