On Tue, 2019-07-23 at 15:37 +0200, Linus Walleij wrote: > Migrating the TI nspire calculators to use the PL111 driver for > framebuffer requires grayscale support for the elder panel > which uses 8bit grayscale only. > > DRM does not support 8bit grayscale framebuffers in memory, > but by defining the bus format to be MEDIA_BUS_FMT_Y8_1X8 we > can get the hardware to turn on a grayscaling feature and > convert the RGB framebuffer to grayscale for us. What's wrong with DRM_FORMAT_R8? Yes the hardware is not really "redscale", but it's still a single color channel and there's not really any ambiguity. - ajax _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
