Re: graphic drivers and simplefb

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

On Thu, 5 Apr 2018, Manuel Bouyer wrote:

> Does it really do that ?
> Reading the sources nothing is displayed until simplefb_attach() is called.
> simplefb_console_consinit() calls genfb_cnattach() but it does nothing.
> The dmesg buffer is replayed when genfb attaches with the console flag.

Doh, you're right. I'll have to fix that :)

> Actually FDT_CONSOLE doens't prevent the serial port from taking over the
> console if the stdout-path says so - and even if the command line says
> otherwise.

Looks like we're missing a call to com_is_console in sunxi_com. This 
should be fixed too..

> Actually it works with simplefb because /chosen/framebuffer is probed and
> attaches after com0 (and it's not an ordering kludge: it's just luck).
> As sunxidep is attached before com0, com0 has the last word.

Not behavior I want to rely on :/

Cheers,
Jared