On Tue, 22 Apr 2008 14:54:21 +0530 "ext Syed Mohammed, Khasim" <khasim@xxxxxx> wrote: > Good to know you are volunteering for upgrading McBSP driver. > > Can you also make sure that McBSP driver uses DMA chaining APIs? With > out chaining support McBSP Driver will be unusable for a real time > audio playback. > Multichannel chaining is not necessary AFAIK because we can set up OMAP DMA transfer so that interrupt is generated in end of each ALSA period and then link channel with itself. I did it so in my ASoC driver: http://opensource.wolfsonmicro.com/cgi-bin/gitweb.cgi?p=linux-2.6-asoc.git;a=blob;f=sound/soc/omap/omap-pcm.c;h=62370202c649c5aac50e542626b574a7079909e2;hb=dev In fact, my first version used the chaining API, until we figured out this with Tony :-) Jarkko -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
