[alsa-devel] [PATCH] ASoC: Provide a more complete DMA driver stub

[Girdwood, Liam]

On 5 December 2011 23:19, Mark Brown
<broonie at opensource.wolfsonmicro.com> wrote:
> On Mon, Dec 05, 2011 at 10:02:50PM +0000, Liam Girdwood wrote:
>> On Mon, 2011-12-05 at 20:56 +0000, Mark Brown wrote:
>> > Allow userspace applications to do more parameter setting by providing a
>> > more complete stub DMA driver specifying a wildcard set of formats and
>> > channels and essentially random values for the DMA parameters. This is
>> > required for useful runtime operation of the dummy DMA driver until we
>> > are able to figure out how to power up links and do hw_params() from DAPM.
>
>> Is this also intended to be used for hostless DAI links e.g.
>
>> MODEM <-> MCBSP <-> DSP
>
> It's for any sort of link that doesn't go through a DMA controller the
> kernel can see - this is the DMA driver that gets stubbed in when the
> DAI doesn't have a DMA driver.  In the case above I guess it depends on
> if the DMA controller is hidden by the DSP or not.

Ok, that's what I was thinking.

Acked-by: Liam Girdwood <lrg at ti.com>