diff options
| author | Jonathan Corbet <corbet@lwn.net> | 2010-04-23 08:56:55 -0600 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2010-05-07 17:17:37 -0600 |
| commit | b8f7e5d846387e3bcda35f3809856cf085740a24 (patch) | |
| tree | 4ca50fc7021b056c3cddd83045861b1871bf669c | |
| parent | b052d7f81fdd352a5d89ef1ac37a2c77f219463b (diff) | |
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: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| -rw-r--r-- | drivers/video/via/via_i2c.c | 13 | ||||
| -rw-r--r-- | drivers/video/via/via_i2c.h | 1 |
2 files changed, 14 insertions, 0 deletions
diff --git a/drivers/video/via/via_i2c.c b/drivers/video/via/via_i2c.c index c88450ee62b..febc1dda69c 100644 --- a/drivers/video/via/via_i2c.c +++ b/drivers/video/via/via_i2c.c @@ -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, diff --git a/drivers/video/via/via_i2c.h b/drivers/video/via/via_i2c.h index 1d18e7d57b7..44532e468c0 100644 --- a/drivers/video/via/via_i2c.h +++ b/drivers/video/via/via_i2c.h @@ -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); |