dma: dw: split driver to library part and platform code

To simplify the driver development let's split driver to library and platform
code parts. It helps us to add PCI driver in future.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
[Fixed compile error and few checkpatch issues]
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/drivers/dma/dw/Kconfig b/drivers/dma/dw/Kconfig
index 38a215af5ccc..efd9e02a58eb 100644
--- a/drivers/dma/dw/Kconfig
+++ b/drivers/dma/dw/Kconfig
@@ -2,10 +2,14 @@
 # DMA engine configuration for dw
 #
 
-config DW_DMAC
+config DW_DMAC_CORE
         tristate "Synopsys DesignWare AHB DMA support"
         depends on GENERIC_HARDIRQS
         select DMA_ENGINE
+
+config DW_DMAC
+        tristate "Synopsys DesignWare AHB DMA platform driver"
+        select DW_DMAC_CORE
         default y if CPU_AT32AP7000
         help
           Support the Synopsys DesignWare AHB DMA controller. This
@@ -14,7 +18,7 @@ config DW_DMAC
 config DW_DMAC_BIG_ENDIAN_IO
         bool "Use big endian I/O register access"
         default y if AVR32
-        depends on DW_DMAC
+        depends on DW_DMAC_CORE
         help
           Say yes here to use big endian I/O access when reading and writing
           to the DMA controller registers. This is needed on some platforms,