From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jonathan Corbet Date: Wed, 28 Apr 2010 22:17:20 +0000 Subject: [PATCH 19/30] viafb: Introduce viafb_find_i2c_adapter() Message-Id: <1272493051-25380-20-git-send-email-corbet@lwn.net> List-Id: References: <1272493051-25380-1-git-send-email-corbet@lwn.net> In-Reply-To: <1272493051-25380-1-git-send-email-corbet@lwn.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-kernel@vger.kernel.org Cc: Harald Welte , linux-fbdev@vger.kernel.org, JosephChan@via.com.tw, ScottFang@viatech.com.cn, Florian Tobias Schandinat The camera driver will need this to look up a specific adapter. Signed-off-by: Jonathan Corbet --- 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