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SubjectRe: [RFC PATCH 1/3] dmaengine: add dma_get_channel_caps()
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On Tue, 2012-10-23 at 23:49 +0100, Grant Likely wrote:
> > +enum dmaengine_apis {
> > + DMAENGINE_MEMCPY = 0x0001,
> > + DMAENGINE_XOR = 0x0002,
> > + DMAENGINE_XOR_VAL = 0x0004,
> > + DMAENGINE_PQ = 0x0008,
> > + DMAENGINE_PQ_VAL = 0x0010,
> > + DMAENGINE_MEMSET = 0x0020,
> > + DMAENGINE_SLAVE = 0x0040,
> > + DMAENGINE_CYCLIC = 0x0080,
> > + DMAENGINE_INTERLEAVED = 0x0100,
> > + DMAENGINE_SG = 0x0200,
> > +};
>
> Actually, one more comment. Why the new enum? Why can't the
> dma_transaction_type enum be used directly along with dma_cap_mask_t?
Some of the capabilities above are not there in dma_caps_t like DMA_SG.
Also DMA_INTERRUPT and DMA_PRIVATE would not make much sense here.

BUT would help to keep things simpler if have one definition which
includes all.

--
Vinod Koul
Intel Corp.



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