On Tue, 2014-05-20 at 09:40 -0300, Emilio L?pez wrote:

El 24/04/14 11:22, Maxime Ripard escribi?:

quoted

The Allwinner A31 has a 16 channels DMA controller that it shares with the
newer A23. Although sharing some similarities with the DMA controller of the
older Allwinner SoCs, it's significantly different, I don't expect it to be
possible to share the driver for these two.

The A31 Controller is able to memory-to-memory or memory-to-device transfers on
the 16 channels in parallel.

...

quoted

diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index 5c5863842de9..360a10c71388 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig

@@ -361,6 +361,14 @@ config FSL_EDMA
  	  multiplexing capability for DMA request sources(slot).
  	  This module can be found on Freescale Vybrid and LS-1 SoCs.

+config DMA_SUN6I
+	tristate "Allwinner A31 SoCs DMA support"
+	depends on ARCH_SUNXI
+	select DMA_ENGINE
+	select DMA_VIRTUAL_CHANNELS

I think you also need to select DMA_OF here as you are using 
of_dma_controller_register

of_dma_controller_register should have a stub (which it does).
No need to have such a dependency.

-- 
Andy Shevchenko [off-list ref]
Intel Finland Oy
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