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SubjectRe: [PATCH v3 2/5] ASoC: dwc: Iterate over all channels
On 12/22/14 13:53, Mark Brown wrote:
> On Fri, Dec 19, 2014 at 04:18:06PM +0000, Andrew Jackson wrote:
>
>> The Designware core can be configured with up to four stereo channels.
>> Each stereo channel is individually configured so, when the driver's
>> hw_params call is made, each requested stereo channel has to be
>> programmed.
>
> This is quite unclear to someone who doesn't know the hardware, is this
> a bug fix or a new feature? It looks like it's a fix...
>

It is a fix. In the Designware core, each stereo channel is configured
individually. So, when hw_params is called to configure N channels,
N/2 stereo channels need to be configured in the core. The existing
code doesn't do this and will only configure the highest numbered
channel.

Andrew



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