Hello Mark, Sorry for the late answer, i was OoO... On 02/16/2017 09:14 PM, Mark Brown wrote: > 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. > Ok I will have a look in generic dmaengine and try to propose something in this way in the V2. Regards, Arnaud -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
