Hi Maxime,
El 24/04/14 11:22, Maxime Ripard escribió:
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.
Signed-off-by: Maxime Ripard <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
---
(snip)
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
+ help
+ Support for the DMA engine for Allwinner A31 SoCs.
+
config DMA_ENGINE
bool
Cheers,
Emilio
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