At Mon, 26 Mar 2007 11:28:59 +0200, Sven Johnsson wrote: > > Rene, > > I have already read the ALSA driver document. What I really like to > understand is when DMA transfers are invoked, and what the source and > destination for the transfer is. The DMA transfer is started/stopped in trigger callback. In the case of typical playback, the source is the buffer the driver allocated (in hw_params callback) and the destination is the hardware. The DMA setup is usually done in prepare callback. Takashi > > Regards, > Sven > > 2007/3/26, Rene Herman <rene.herman@xxxxxxxxx>: > > On 03/26/2007 03:13 AM, Sven Johnsson wrote: > > > > > I'm new to writing ALSA drivers, and I could use some help on > > > clarifying how DMA is used in ALSA. > > > > "Writing an ALSA Driver" is a useful document. Google will find it... > > > > By the way, the alsa-devel mailinglist recently moved from > > sourceforge.net to alsa-project.org directly and the new list is > > moderated for non-subscribers. I just approved your message from the > > moderation queue manually, but please consider subscribing, at: > > > > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel > > > > Thanks, > > Rene > > > > > > > > > > > > > > Regards, > > > Sven > > > _______________________________________________ > > > Alsa-devel mailing list > > > Alsa-devel@xxxxxxxxxxxxxxxx > > > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel > > > > > > > > _______________________________________________ > Alsa-devel mailing list > Alsa-devel@xxxxxxxxxxxxxxxx > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
