Re: [alsa-devel] WRITING AN SOC DRIVER WITHOUT DMA

Hi Dinesh,

If that is your requirement then go and see the actual code
sound/arm/aaci.c. They are not using DMA. It is programmed IO.


Thanks
Nobin Mathew

On 7/17/08, Mark Brown [off-list ref] wrote:

On Thu, Jul 17, 2008 at 11:33:31AM +0530, dinesh wrote:

quoted

What i want is that i have a buffer in driver code which is also handled
by some other application i want that this buffer data is to be used for
capture and playback  stream fills data to another buffer which i can
passover to my other application.

Depending on what exactly you're doing here you may find that this is
best implemented in user space with an ALSA plugin rather than doing it
as part of a driver.  If you do want to do this in kernel space then the
parts of an ASoC driver which transfer audio data are just the same as
those for any other ALSA driver so things like sound/arm/aaci.c may
provide useful examples.