Re: HDMI transmitter attachement

[Jared McNeill <jmcneill%invisible.ca@localhost>]

On Tue, 16 Sep 2014, Manuel Bouyer wrote:

> How do you say which driver you want in the kernel config file then ?

In my case I have vendor / product IDs to help determine the board type.

Interesting problem though -- and I missed the part where you were using 
an external i2c controller the first time through. I'm working on a 
similar driver for the Cubieboard2 at the moment but the i2c controller is 
part of the HDMI module, so I can simply use dev/i2c/ddc.c from there.

Do you plan on running the HDMI output and framebuffer at the same 
resolution? The reason I ask is that for cubie I was thinking to run the 
framebuffer at a fixed resolution, let HDMI configure itself 
automatically, and use the scaler to make it all work. Then to get a 
native mode right mode for X, expose the display info with 
WSDISPLAYIO_GET_EDID and have the X driver pick a new mode to use. I'm 
not confident in wsdisplay's ability to handle hotplug / mode changes for 
the console device. Maybe someone can prove me wrong :)