At Thu, 14 Feb 2008 13:29:00 +0100, Pavel Hofman wrote: > > Hi, > > The constraint comes from the codec, the chip itself can handle 192kHz, > e.g. the 192kHz SPDIF input works fine. Actually more of the ice1724 > cards have this limit. If this issue is solved in a general way, it > could be implemented to other cards with 192kHz DACs/96kHz ADCs too. Thanks for a quick information. Then, yes, we should fix this issue in general. The separate lists of rates for playback and capture would be required in the end... Takashi > Pavel > > Takashi Iwai wrote: > > At Thu, 14 Feb 2008 00:36:07 +0100, > > Rainer Zimmermann wrote: > >> > >> This is the revised version of the ESI Maya44 patch. > >> changes are mainly coding style, some cleanups and using a patch file for > >> ice1724.c . > >> > >> The added code now (mostly) passes checkpatch.pl, except for some "#if 0"'s > >> which I'd leave in for the development phase. > >> > >> Also, I changed the rate setting logic, which (for now) allows all rates up to > >> 192kHz even for capturing. As capturing actually only supports 96 kHz, while > >> capturing & playback rates are linked, this is not really ok. I'd appreciate > >> suggestions about how this could be handled properly, while still supporting > >> playback up to 192 kHz... > > > > Does the 96kHz constraint come from ice172x chip or the codec chip? > > (I have to recheck the datasheet...) > > > > Anyway, we can limit this in a scenario like below: > > - disallow the rate over 96kHz if the capture stream is being opened > > - if the rate is set above 96kHz, the capture stream cannot be opened, > > returns -EBUSY or so. > > > > BTW, is it supposed to be still highly experimental? If the driver > > works more or less stably with your device (and on the recent kernel), > > it'd be also good to put this to the upstream, i.e. in alsa-kernel > > tree instead of alsa-driver tree. > > > > > > Takashi > > _______________________________________________ > > Alsa-devel mailing list > > Alsa-devel@xxxxxxxxxxxxxxxx > > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel > > -- > ----------------- > > inSITE, s.r.o. > > Rubesova 29, 326 00 Plzen > Tel., fax: +420 - 37 - 74 493 58 > GSM: +420 - 603 - 163 973 > Email: pavel.hofman@xxxxxxxxx > > www.educity.cz, www.insite.cz > www.meetings.cz, www.hrzive.cz > www.comben.cz, www.hr-online.cz > ------------------------------- > Navstivte www.educity.cz, server > s nejvetsi nabidkou profesniho > vzdelavani na ceskem internetu. > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
