On Thu, Apr 12, 2012 at 4:26 AM, Chris Wilson chris@chris-wilson.co.uk wrote:
On Thu, 12 Apr 2012 02:17:46 +0800, Daniel Kurtz djkurtz@chromium.org wrote:
On Wed, Apr 11, 2012 at 5:34 AM, Chris Wilson chris@chris-wilson.co.uk wrote:
The last major item on the wishlist is solving how to drive the SDVO i2c over gmbus. I think it is just a matter of massaging in the channel switch as msg[0].
I noticed that random other i2c adapter, but haven't looked at it to know why it is so different than the others. What is it?
Every command sequence over SDVO is preceded by an instruction to the controller as to which function to send the command to. Originally I tried to reuse the GPIO method of simply sending that switch command immediately followed by the real message, but I never succeeded in setting up the SDVO devices in that manner. I suspect what is actually required is to rebuild the message to include the preceeding bus switch.
However, if you don't have any SDVO devices to experiment with we can find somebody who does.
Sorry, I don't have any SDVO hardware to play with.
-Chris
-- Chris Wilson, Intel Open Source Technology Centre