dma: tegra: add dmaengine based dma driver

Add dmaengine based NVIDIA's Tegra APB DMA driver.
This driver support the slave mode of data transfer from
peripheral to memory and vice versa.
The driver supports for the cyclic and non-cyclic mode
of data transfer.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index c8416d54f917..b3761153649d 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -148,6 +148,20 @@ config TXX9_DMAC
           Support the TXx9 SoC internal DMA controller.  This can be
           integrated in chips such as the Toshiba TX4927/38/39.
 
+config TEGRA20_APB_DMA
+        bool "NVIDIA Tegra20 APB DMA support"
+        depends on ARCH_TEGRA
+        select DMA_ENGINE
+        help
+          Support for the NVIDIA Tegra20 APB DMA controller driver. The
+          DMA controller is having multiple DMA channel which can be
+          configured for different peripherals like audio, UART, SPI,
+          I2C etc which is in APB bus.
+          This DMA controller transfers data from memory to peripheral fifo
+          or vice versa. It does not support memory to memory data transfer.
+
+
+
 config SH_DMAE
         tristate "Renesas SuperH DMAC support"
         depends on (SUPERH && SH_DMA) || (ARM && ARCH_SHMOBILE)