dmaengine: split out virtual channel DMA support from sa11x0 driver

Split the virtual slave channel DMA support from the sa11x0 driver so
this code can be shared with other slave DMA engine drivers.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index aadeb5be9dba..eb2b60e8e1cb 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -255,6 +255,7 @@ config DMA_SA11X0
         tristate "SA-11x0 DMA support"
         depends on ARCH_SA1100
         select DMA_ENGINE
+        select DMA_VIRTUAL_CHANNELS
         help
           Support the DMA engine found on Intel StrongARM SA-1100 and
           SA-1110 SoCs.  This DMA engine can only be used with on-chip
@@ -263,6 +264,9 @@ config DMA_SA11X0
 config DMA_ENGINE
         bool
 
+config DMA_VIRTUAL_CHANNELS
+        tristate
+
 comment "DMA Clients"
         depends on DMA_ENGINE