Hi, On Wed, 10 Dec 2025 16:41:50 +0100, Thomas Zimmermann <[email protected]> wrote:
> Hi > > Am 10.12.25 um 16:33 schrieb René Rebe: > > Hallo, > > > > On Wed, 10 Dec 2025 09:55:50 +0100, Thomas Zimmermann > > <[email protected]> wrote: > > ... > >>>> Does that fix the color corruption? > >>> Following your suggestions conversion does not want to just work: > >>> > >>> root@XCODE_SPARC_T4_1:~# dmesg | tail > >>> [ 105.444761] ast 0000:0a:00.0: AST 2200 detected > >>> [ 105.444947] ast 0000:0a:00.0: [drm] dram MCLK=266 Mhz type=2 > >>> bus_width=32 > >>> [ 105.444963] ast 0000:0a:00.0: [drm] Using analog VGA > >>> [ 105.445470] [drm] Initialized ast 0.1.0 for 0000:0a:00.0 on minor 0 > >>> [ 105.673289] ast 0000:0a:00.0: [drm] format BX24 little-endian > >>> (0x34325842) not supported > >>> [ 105.673302] ast 0000:0a:00.0: [drm] No compatible format found > >>> [ 105.673348] ast 0000:0a:00.0: [drm] *ERROR* fbdev: Failed to setup > >>> emulation (ret=-22) > >>> [ 105.901306] ast 0000:0a:00.0: [drm] format BX24 little-endian > >>> (0x34325842) not supported > >>> [ 105.901319] ast 0000:0a:00.0: [drm] No compatible format found > >>> [ 105.901350] ast 0000:0a:00.0: [drm] *ERROR* fbdev: Failed to setup > >>> emulation (ret=-22) > >> Oh well... > >> > >> There's a very simple patch attach. Does it fix the problem? > > Yes, only leaving the hardcoded swapping from my patch liek this fixes > > the byte-swapped output as expected on the sparc64 Sun T4. > > Great. > > > > > How would you like me to go from here? Just use the chip_id to force > > swapping and enable hw swapper for pre-AST2400 chips or fix the > > generic format selection to work as you had suggested? > > > > Does the ast_primary_plane_formats need to byte swapped formats for it > > to work? > > I'll send out a full patch that implements the byte swapping. Once > reviewed, it can be merged quickly. Can I add your Tested-by tag to > the patch? I'd be happy to finish my work. But if you want to put the last touch on it now you can add Co-developed-by, too ... and I'll test the final version. René -- René Rebe, ExactCODE GmbH, Berlin, Germany https://exactco.de • https://t2linux.com • https://patreon.com/renerebe
