On Thu, May 22, 2008 at 02:57:41PM -0500, Geoffrey Wossum wrote: > Looks like it should work to me. Note that I do hear a pop from the speaker > the first time I try to play a file. Here's a dump of the registers while > I'm trying to play a file with aplay. I'm combing through them right now to > see if I can find anything that looks off. Yes, it looks like the output paths are OK from the DAPM point of view. > Wish I had known about this register dump earlier today. I added code to do > the same thing with debugfs. I'll have a look at it at some point, but not right now :) . I should also have asked you if you could post your machine driver - if you'd rather post it off-list that'd be fine. > > I'll need to check this out in more detail - the WM8510 is a mono codec > > so it can only play one channel. > Not sure about this either, since I can't get it to play anything yet. But it > looks from the WM8510 data sheet that even though the WM8510 is mono, it > expects a stereo I2S stream, and just ignores one of the channels based on > the value of DACLRSWAP register bit. Indeed, the main thing I need to check is to confirm what is normally done with mono channels - in any case, the codec should at least make some noise providing the rates are correct and there's stereo data. I take it the digital audio looks fine with a scope - clocks at the correct rate, sensible looking data and so on? _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
