On 5/15/2009 7:05 PM, Lopez Cruz, Misael wrote: >>> In current code, as you say, you have to directly change >>> the value of the reg cache for setting to option2, also >>> you have to modify the REG_OPTION and REG_VOICE_IF reg for >>> voice, but this is temporary method. > >> This can be done with a register write from the DAI init() >> function in the machine driver in order to avoid modifying >> twl4030.c itself. > > For audio and voice interface, following things need to be configured: > > Audio interface: > - Output pins state: high impendance or application mode > - Enable audio interface > > Voice interface: > - Enable voice data input > - Enable voice data output > - Output pins state: high impedance or application mode > - Enable voice interface > > I think that interfaces can be enabled in DAI init as Mark suggests, Yes, but i worry about whether this reg value can be changed on the fly or not. > but input/output should be enabled depending on whether we are doing > playback/capture or not, and then they should be handled in the codec > driver. Hmm, the twl4030 codec can do the voice communication at the same time while doing playback/capture, is not it? > > For the codec operation mode selection, I still think Peter's > advice is more appropriate because options1,2 are not really tight to > DAIs. For example, we can be in option2 (voice/audio) and do > transferences using both DAIs: I2S and PCM. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
