Vinod Koul <vinod.koul@xxxxxxxxx> writes: > On Fri, Dec 09, 2016 at 11:25:57AM +0100, Sebastian Frias wrote: >> >> What concrete solution do you propose? > > I have already proposed two solutions. > > A) Request a channel only when you need it. Obviously we can't do virtual > channels with this (though we should still use virt-channels framework). > The sbox setup and teardown can be done as part of channel request and > freeup. PL08x already does this. > > Downside is that we can only have as many consumers at a time as channels. > > I have not heard any technical reason for not doing this apart from drivers > grab the channel at probe, which is incorrect and needs to be fixed > irrespective of the problem at hand. > > This is my preferred option. Sorry, but this is not acceptable. > B) Create a custom driver specific API. This API for example: > sbox_setup(bool enable, ...) > can be called by client to explicitly setup and clear up the sbox setting. > > This way we can have transactions muxed. > > I have not heard any arguments on why we shouldn't do this except Russell's > comment that A) solves this. Driver-specific interfaces are not the solution. That way lies chaos and madness. This would all be so much easier if you all would just shut up for a moment and let me fix it properly. -- Måns Rullgård -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
