i2c: S3C2410: Pass the I2C bus number via drivers platform data

Allow the platform data to specify the bus bumber that the
new I2C bus will be given. This is to allow the use of the
board registration mechanism to specify the new style of
I2C device registration which allows boards to provide a
list of attached devices.

Note, as discussed on the mailing list, we have dropped
backwards compatibility of adding an dynamic bus number
as it should not affect most boards to have the bus pinned
to 0 if they have either not specified platform data for
driver. Any board supplying platform data will automatically
have the bus_num field set to 0, and anyone who needs the
driver on a different bus number can supply platform data
to set bus_num.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/asm-arm/plat-s3c/iic.h b/include/asm-arm/plat-s3c/iic.h
index 71211c8b538..d08a1f2863e 100644
--- a/include/asm-arm/plat-s3c/iic.h
+++ b/include/asm-arm/plat-s3c/iic.h
@@ -21,6 +21,7 @@
 */
 
 struct s3c2410_platform_i2c {
+        int             bus_num;        /* bus number to use */
         unsigned int    flags;
         unsigned int    slave_addr;     /* slave address for controller */
         unsigned long   bus_freq;       /* standard bus frequency */