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    Subject[PATCH 19/30] viafb: Introduce viafb_find_i2c_adapter()
    Date
    The camera driver will need this to look up a specific adapter.

    Signed-off-by: Jonathan Corbet <corbet@lwn.net>
    ---
    drivers/video/via/via_i2c.c | 13 +++++++++++++
    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 c88450e..febc1dd 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 1d18e7d..44532e4 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);
    --
    1.7.0.1


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