On Mon, Jul 30, 2012 at 10:24:01PM +0200, [email protected] wrote:
> I was expecting the following to work:
> addr = dma_map_single(dev, buffer, size, DMA_TO_DEVICE);
Sorry, I forgot this (invalidate):
dma_sync_single_for_device(dev, buffer, pattern_size, DMA_FROM_DEVICE);
> dev_send(buffer);
> // wait for irq (don't peek in the buffer) ... got irq
> dma_sync_single_single_for_cpu(dev, buffer, pattern_size,
> DMA_FROM_DEVICE);
> if (!xfer_done(buffer)) // not RAM value
> dma_sync_single_for_device(dev, buffer, pattern_size,
> DMA_FROM_DEVICE);
> [...]
Karl
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