On 1/28/08, Liam Girdwood liam.girdwood@wolfsonmicro.com wrote:
On Sun, 2008-01-27 at 14:15 -0500, Jon Smirl wrote:
On 1/27/08, Jon Smirl jonsmirl@gmail.com wrote:
I'm trying to write an asoc v2 driver for my powerpc based SOC (mpc5200) hardware. We have two audio devices on the board, a WM8580 and a TAS5504. How do you do this with asoc v2? The card is created in snd_soc_machine_create(); there seems to be an assumption of a single card per machine.
This was the initial assumption in v1. To be honest we were only catering for single codec devices. In v2 we are allowing multiple cards
- struct machine is being refactored atm to make this more obvious.
What about the Efika? It has SOC audio with a STAC9766 but it also has a PCI slot.
Or are you supposed to mix the different devices into a single pcm driver? What would happen in pxa2xx-pcm.c if more than one of these were defined?
I guess I'm supposed to have multiple platform drivers - one per I2C/AC97/SSC channel?
You could do this or create two cards (machines). I've kept platform as the DMA + all the interfaces (as some devices have more than one interface in operation e.g. AC97 for HiFi and I2S/PCM for voice).
Liam
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