On Wed, Feb 15, 2017 at 04:46:44PM +0100, Arnaud Pouliquen wrote: > On 02/15/2017 03:53 PM, Mark Brown wrote: > > On Wed, Feb 15, 2017 at 02:59:18PM +0100, Arnaud Pouliquen wrote: > > No, copy() is an alternative to doing DMA rather than something > > that works with DMA. If you want to have some sort of post > > processing operation it shoudn't be called copy(). It's probably > > worth considering just making a new format and letting userspace > > convert things here. > You mean using a plug-in alsa to do it? this seems not possible with > tiny-alsa... > Without a plug-in, driver will not be compatible with standard audio > application. Right. But if you're using tinyalsa you've got some open coded system specific stuff anyway! > Do you think this would be reasonable if i implement something similar > in my driver, without using the soc generic DMA engine? Probably. It might even be possible to fit it elegently into the generic dmaengine code, just don't say it's a copy() operation since that's a specific thing in ALSA.
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