mmc: add DMA support to tmio_mmc driver, when used on SuperH

SDHI controllers on SuperH, served by the tmio_mmc driver, can use slave DMA
for data transfer. This patch adds support for the dmaengine API to the
tmio_mmc driver.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Ian Molton <ian@mnementh.co.uk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index de3e74cde51c..3c6a9860dd9c 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -49,6 +49,7 @@ config MFD_SH_MOBILE_SDHI
         bool "Support for SuperH Mobile SDHI"
         depends on SUPERH || ARCH_SHMOBILE
         select MFD_CORE
+        select TMIO_MMC_DMA
          ---help---
           This driver supports the SDHI hardware block found in many
           SuperH Mobile SoCs.
@@ -162,6 +163,11 @@ config MFD_TMIO
         bool
         default n
 
+config TMIO_MMC_DMA
+        bool
+        select DMA_ENGINE
+        select DMADEVICES
+
 config MFD_T7L66XB
         bool "Support Toshiba T7L66XB"
         depends on ARM && HAVE_CLK