Messages in this thread | | | Date | Wed, 27 Jul 2011 12:59:09 +0300 | From | Mika Westerberg <> | Subject | Re: [PATCHv2] DMAEngine: Let dmac drivers to set chan_id |
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On Wed, Jul 27, 2011 at 02:32:26PM +0530, Koul, Vinod wrote: > Can you please help me understand why channel number "x" is important > and strictly needed by some client?
At least in ep93xx we have even channel numbers for TX and odd for RX (or vice versa, can't rememeber). This is a hardware restriction. So the client code then filters the channels based on that using ->chan_id.
As the caps are not per channel, that is the only way I was able to make it work.
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