Messages in this thread | | | Date | Mon, 22 Dec 2014 14:08:44 +0000 | From | Andrew Jackson <> | Subject | Re: [PATCH v3 2/5] ASoC: dwc: Iterate over all channels |
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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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