[alsa-devel] New Audio Driver Design
Hello, I am to write an ALSA driver for my SOC which has a dedicated DSP subsystem which can be loaded with decoder instructions and parameteres, and then we load it with encoded data. The dsp then decodes the data and sends it to the PCM controller.
Could someone please refer me to some similar driver/codec which already does that? If not, how should i design the driver? :- Should I load the encoder inst/params using firmware API? Then, which API should I use to submit encoded data to the DSP?
Any pointers please?
Thanks.
On Tue, Jul 14, 2009 at 01:52:12PM +0900, jassi brar wrote:
I am to write an ALSA driver for my SOC which has a dedicated DSP subsystem which can be loaded with decoder instructions and parameteres, and then we load it with encoded data. The dsp then decodes the data and sends it to the PCM controller.
Are these decoder instruction something you need to do at runtime? Or would it suffice to provide them once when the driver is probed?
For the first case, you could use the ALSA control interface, in particular the SNDRV_CTL_ELEM_BYTES type.
For the latter, you might want to have a look at the firmware framework and read Documentation/firmware_class/README.
Hope that helps, Daniel
participants (2)
-
Daniel Mack -
jassi brar