Re: [RFC PATCH 1/3] dmaengine: add dma_get_channel_caps()

[Vinod Koul]

On Tue, 2012-10-23 at 15:54 -0700, Dan Williams wrote:
> > +struct dmaengine_chan_caps {
> > +       enum dmaengine_apis ops;
> > +       int seg_nr;
> > +       int seg_len;
> > +};
> 
> This makes sense for the potentially dynamic capability properties
> that get set after configuration, but why do we need the operation
> types here?  They can be retrieved from the parent device. 
I was thinking that each channel can have different capabilities.
You can assign one channel for mempcy operations exclusively and some
others for slave usage exclusively.
I believe some h/w do have such assignment so would help in doing that.

-- 
Vinod Koul
Intel Corp.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/