12:41 <wens> javierm: hi, I wonder if the ssd130x driver should expose native formats (R4 / RGB565) for the gray scale or 65k controllers?

13:09 <javierm> wens: that's the plan, yes

13:10 <javierm> wens: there were some patches from geertu to expose the native R1 format for the ssd1306 and the same should be done for the others (R4 as you said for ssd1327 and RGB332 for ssd1331)

13:11 <javierm> but I first wanted to emulate RGB8888 and then focus on the native formats

13:40 <geertu> wens: The main issue is that the fbdev emulation doesn't support greyscale yet, as it uses a fixed mapping from depth/bpp to 4cc format code.

13:42 <geertu> https://lore.kernel.org/all/cover.1692888745.git.geert@linux-m68k.org/ adds support for R1, but the proper solution would involve replacing preferred_{depth,bpp} by preferred_format.

13:43 <geertu> I started looking into that, but it's a rats nest, with lots of hacks for e.g. broken endianness support in early DRM core and driver code.

13:48 <wens> got it, thanks

13:52 <CounterPillow> Is there a shared project board to keep track of ratsnest untangling for the subsystem somewhere? Might be useful so we don't re-tread investigative work

14:42 <javierm> wens: yeah, what geertu said. That's why we just expose an emulated XR24 pixel format for now