Hi Mark, thanks for your response. My comments are in between. Op 12 dec 2009, om 19:05 heeft Mark Brown het volgende geschreven: > On Fri, Dec 11, 2009 at 01:29:07PM +0100, Niels Langendorff wrote: > >> for a samsung based project we have chosen two codecs, one for input, >> the other for output. The two codecs are using the same I2S bus due to >> audio requirements (HF audio in combination with EC) > >> When having two machine implementations at the same time for the two >> codecs we will run into problems attaching to the I2S bus. A solution is >> to combine the machine implementation into one file, but then I probaly >> have to modify generic kernel code. > >> I there some solution for this and/or example code > > This should work with the kernel as-is providing the two CODECs don't > both need register control, just declare DAI links for each of the links > you need from your machine driver. Both the codecs needs to be reconfigured by writing the registers for every playback/recording, so that is the difficulty. I will have a look at the OMAP implementation as a good example. > Nothing will stop you adding one DAI > to multiple links. You'll need to deal with resource contention issues > in your machine driver but it should have enough hooks already to > support that, or you can just arrange for your application to never try > to do anything unsupported. > > If you run into problems doing this please bring them up on the list. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
