[U-Boot] [RFC] [PATCH] DaVinci/i2c: allow multiple buses

[Heiko Schocher <hs@denx.de>]

Hello Tom, J?r?me,

Sorry for the late reply, but I just starting to look through my
backlog, after my vacation ...

Tom Rini wrote:
> On Wed, Dec 21, 2011 at 10:36 PM, J?r?me Carretero <cJ-uboot@zougloub.eu> wrote:
>> Hi Tom,
>>
>> I'm requesting comments on the following (untested) patch.
>> It adds support for multiple i2c buses on davinci_i2c, without altering one line of code.
>> What I don't like is that I'm doing a bit of macro black magic to transform constants into variables.
>> But I don't know whether refactoring the code would be accepted, so this is a first shot.
> 
> So, this follows the example of other i2c drivers, but as Wolfgang
> likes to point out, following another bad example isn't a valid reason
> to do something.  So, is this the right way or a bad example to
> follow, Wolfgang or Heiko?  Thanks!

Yes, that is the actual (not really nice) state to implement the
"multibus" feature for i2c. The better way would be to go this way:

http://git.denx.de/?p=u-boot/u-boot-i2c.git;a=shortlog;h=refs/heads/multibus_v2_20111112

but this branch is not up to date, some test on at last powerpc
and arm architectures should be done, and there are a lof of
checkpatch errors in this branch (any help is welcome ;-) ... so there
is some work to do, before this can go to mainline ...

bye,
Heiko
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