Hi Thomas, Thomas Zimmermann <tzimmermann@xxxxxxx> writes: > Am 01.11.21 um 09:54 schrieb Sven Schnelle: >> Thomas Zimmermann <tzimmermann@xxxxxxx> writes: >> Thanks, i wasn't aware as i normally don't do any graphics related >> development. I take a look at dri and port the driver, which is >> hopefully not too hard. > > Sounds good. > > The one big difference when converting is that DRM really wants > drivers to support 32-bit XRGB colors. It's not a DRM limitation per > se, but a requirement of today's userspace programs. AFAICS your fbdev > driver uses a 256-color palette format. So the DRM driver would have > to convert > XRGB8888 to 8-bit RGB332 and install a corresponding palette. Right now the driver only supports 8 bit pseudocolor, because i wanted to start with something easy to get the kernel fbcon running. I have no idea (yet) how to switch the card into other color formats. And neither how to do pseudo color with drm. But i'll figure it out i guess. > Don't worry, it's easy. Take a look at the cirrus driver for a simple DRM > driver. [1] Great, i also picked that driver as a template. :-) Thanks for your help and pointers, much appreciated! Sven
