> -------- Original-Nachricht -------- > Datum: Mon, 12 Jun 2006 12:51:16 +0200 > Von: Takashi Iwai <tiwai@xxxxxxx> > An: Gerhard Pircher <gerhard_pircher@xxxxxxx> > Betreff: Re: RFC: dma_mmap_coherent() for powerpc/ppc architecture and > ALSA? > > > Well, implementing the dma_mmap_coherent() function isn't the > > problem, because it is already implemented for the ARM > > architecture. > > Actually, I wrote dma_coherent_mmap patch long time ago but it has > been left forgotten. The patch attached below seems applicable to > 2.6.17 tree, but I'm not sure whether it still works properly. > It's untested on most of architectures. Thanks, that helps me a lot! > > But as far as I understand this would require a rewrite of all the > > ALSA drivers (or at least a rewrite of the ALSA's DMA helper > > functions). > > Yes. The change of ALSA side has been also on my tree. But it was > still pending since I'm not satisfied with the design yet. > If you're interested in it, let me know. I'll post the patch. Yes, please! Then I can test, if the dma_mmap_coherent() patch works on my non cache coherent powerpc machine. Do you think the DMA Layer/ALSA patches will go upstream in one of the next ALSA/Linux kernel versions? Thanks! Gerhard -- Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! Ideal für Modem und ISDN: http://www.gmx.net/de/go/smartsurfer _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel
