Messages in this thread |  | | Subject | Re: [PATCH 1/7 v2] dmaengine: add a simple dma library | From | Vinod Koul <> | Date | Mon, 30 Jan 2012 14:02:26 +0530 |
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On Thu, 2012-01-26 at 15:56 +0100, Guennadi Liakhovetski wrote: > This patch adds a library of functions, helping to implement dmaengine > drivers for hardware, unable to handle scatter-gather lists natively. > The first version of this driver only supports memcpy and slave DMA > operation. > > Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> > --- > > v2: > > 1. switch from using a tasklet to threaded IRQ, which allowed to > 2. remove lock / unlock inline functions > 3. remove __devinit, __devexit annotations Sorry to join the discussion late, was on vacation, travel, long weekend...
I don't still comprehend the need for a library on top of dmaengine which gain is just a library between clients and dmacs. Surely we don't want to write another abstraction on top of one provided?
If the question is to handle scatter-gather even if the hardware doesn't have the capability, then why don't add that in dmaengine itself rather than one more layer?
-- ~Vinod
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