Re: [Dri-devel] Re: Kind of success! (r128 on PPC (Re: LinuxPPC XServer))

Kostas Gewrgiou wrote:

quoted

quoted

[...] you could run the r128 driver without fbdev to get 16 bits, but
the code to switch the framebuffer to do byteswapping is missing so the
colors will be wron (easy to add though).

Where and how?

  Somewhere in R128ModeInit (or the functions that get called from it) will
do fine i think.

I'll be trying in R128{Save,Restore}Crtc... , adding a config field to the
...Save... struct for the CONFIG_CNTL register. Does that make sense?

About how now look at the following code from aty128fb that does the same
thing.

    config = aty_ld_le32(CONFIG_CNTL) & ~3;
#if defined(__BIG_ENDIAN)
    if (par->crtc.bpp >= 24)
        config |= 2;    /* make aperture do 32 byte swapping */
    else if (par->crtc.bpp > 8)
        config |= 1;    /* make aperture do 16 byte swapping */
#endif
    aty_st_le32(CONFIG_CNTL, config);

Thanks, that code also caught my eye this morning on the train :)


Michel


--
Why drink & drive when you can smoke and fly???
______________________________________________________________________________
Earthling Michel Dänzer (MrCooper)  \  CS student and free software enthusiast
Debian GNU/Linux (powerpc,i386) user \   member of XFree86, Team *AMIGA*, AUGS

** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/