At Tue, 17 Jun 2014 09:54:07 +1000, Benjamin Herrenschmidt wrote: > > On Mon, 2014-06-16 at 17:35 +1000, Benjamin Herrenschmidt wrote: > > > I somewhat doubt that this (and 5:5:5) actually work, do they ? the > > green gets split into two separate fields, which we can't express > > properly here... > > So the conclusion of further investigation is: > > - The right fix is to fix qemu to flip endian > > - There's an open discussion as to whether qemu could do it > automatically when the guest endian changes on powerpc as a quick fix, > the long run approach is to have a register to control it, I'm working > on it. offb can then "learn" to flick it like it does the palette hack > today. > > - If we want to ever support foreign endian offb with X, we need to do > things a bit differently based on the foreign endian bit that is already > there. > > - We must revert the existing cmap swap patch from the kernel, it's > broken and will break things when we fix qemu (and breaks with real HW > in LE mode). I've sent a revert request to Linus and CC'ed stable. Yeah, I agree. Both the current palette fix and my patch are really wrong band-aiding. (Though, the issue in X is rather a problem of X itself. X should work with the tweaked RGB offsets.) thanks, Takashi -- To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
