ARM: s3c64xx: Add support for DMA using generic amba-pl08x driver

This patch adds all required platform-specific data and initialization
code to support the generic amba-pl08x driver on S3C64xx SoCs.

Also some compatibility definitions are added to make the transition
from legacy API to DMA engine easier. The biggest hack here is passing
const char * pointers through DMA resource, casted to unsigned long,
but this is how Samsung DMA wrappers (used to support both s3c-dma and
DMA engine in drivers) are designed.

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/arch/arm/mach-s3c64xx/Kconfig b/arch/arm/mach-s3c64xx/Kconfig
index 2cb8dc55b50e..d8e0288bf2bf 100644
--- a/arch/arm/mach-s3c64xx/Kconfig
+++ b/arch/arm/mach-s3c64xx/Kconfig
@@ -17,9 +17,15 @@ config CPU_S3C6410
         help
           Enable S3C6410 CPU support
 
+config S3C64XX_PL080
+        bool "S3C64XX DMA using generic PL08x driver"
+        select AMBA_PL08X
+        select SAMSUNG_DMADEV
+
 config S3C64XX_DMA
-        bool "S3C64XX DMA"
+        bool "S3C64XX DMA using legacy S3C DMA API"
         select S3C_DMA
+        depends on !S3C64XX_PL080
 
 config S3C64XX_SETUP_SDHCI
         bool