On Thu, Aug 19, 2010 at 5:52 PM, Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > On Thu, Aug 19, 2010 at 04:58:55PM +0200, Manuel Lauss wrote: >> On Thu, Aug 19, 2010 at 4:48 PM, Mark Brown > > Please remember to keep people CCed on Linux mailing list postings. > >> > The struct snd_ac97 * passed in to them has a pointer to the struct >> > snd_card * for the card which should (via some further indirection) >> > allow you to get back to the ASoC specific structures. > >> Are there an in-tree examples I could look at? (and for example on how >> to pass per-instance platform data around? It's not immediately obvious >> to me how to get data allocated in a platform_driver.probe() callback to >> the various dai_ops and pcm_ops). > > This is the only embedded device I've ever seen where anyone wanted to > use multiple AC97 controllers so not directly. If you look at the SoC > core you can see how the various ALSA structures are converted into ASoC > specific ones, though. There are up to four PSCs, each capable of both AC97 and I2S operation, with separate RX and TX DMA channels. I consider each PSC a separate "card". I figured out how to access platform data in dai_ops, however I see absolutely no way to get at it from the ac97_ops. Manuel _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
