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Commit b8f7e5d8 authored by Jonathan Corbet's avatar Jonathan Corbet
Browse files

viafb: Introduce viafb_find_i2c_adapter() 



The camera driver will need this to look up a specific adapter.

Cc: ScottFang@viatech.com.cn
Cc: JosephChan@via.com.tw
Cc: Harald Welte <laforge@gnumonks.org>
Acked-by: default avatarFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent b052d7f8

drivers/video/via/via_i2c.c

+13 −0
Original line number Diff line number Diff line
@@ -157,6 +157,19 @@ int viafb_i2c_readbytes(u8 adap, u8 slave_addr, u8 index, u8 *buff, int buff_len 
	return i2c_transfer(&via_i2c_par[adap].adapter, msgs, 2);

}



/*

 * Allow other viafb subdevices to look up a specific adapter

 * by port name.

 */

struct i2c_adapter *viafb_find_i2c_adapter(enum viafb_i2c_adap which)

{

	struct via_i2c_stuff *stuff = &via_i2c_par[which];



	return &stuff->adapter;

}

EXPORT_SYMBOL_GPL(viafb_find_i2c_adapter);





static int create_i2c_bus(struct i2c_adapter *adapter,

			  struct i2c_algo_bit_data *algo,

			  struct via_port_cfg *adap_cfg,

drivers/video/via/via_i2c.h

+1 −0
Original line number Diff line number Diff line
@@ -35,6 +35,7 @@ struct via_i2c_stuff { 
int viafb_i2c_readbyte(u8 adap, u8 slave_addr, u8 index, u8 *pdata);

int viafb_i2c_writebyte(u8 adap, u8 slave_addr, u8 index, u8 data);

int viafb_i2c_readbytes(u8 adap, u8 slave_addr, u8 index, u8 *buff, int buff_len);

struct i2c_adapter *viafb_find_i2c_adapter(enum viafb_i2c_adap which);



extern int viafb_i2c_init(void);

extern void viafb_i2c_exit(void);