Messages in this thread | | | Date | Thu, 1 Mar 2012 11:19:05 +0100 | From | Sascha Hauer <> | Subject | Re: [PATCH v2 2/2] dmaengine: Add support for multiple descriptors for imx-dma. |
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On Tue, Feb 28, 2012 at 05:08:18PM +0100, Javier Martin wrote: > dmaengine specifies the possibility that several descriptors > can be queued for transfer. It also indicates that tasklets > must be used for DMA callbacks. > > Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Have you tested this patch with audio?
> +static int imxdma_xfer_desc(struct imxdma_desc *d) > +{ > + struct imxdma_channel *imxdmac = to_imxdma_chan(d->desc.chan); > + int ret; > + > + /* Configure and enable */ > + switch (d->type) { > + case IMXDMA_DESC_MEMCPY: > + ret = imx_dma_config_channel(imxdmac->imxdma_channel, > + d->config_port, d->config_mem, 0, 0); > + if (ret < 0) > + return ret; > + ret = imx_dma_setup_single(imxdmac->imxdma_channel, d->src, > + d->len, d->dest, d->dmamode); > + if (ret < 0) > + return ret; > + break; > + case IMXDMA_DESC_CYCLIC: > + ret = imx_dma_setup_progression_handler(imxdmac->imxdma_channel, > + imxdma_progression); > + if (ret < 0) > + return ret;
You fall through here. Is this intended? If yes, a comment would be good here.
Sascha
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