From 4de3a8fa334851e642d4889d6afa6e5d3daea10a Mon Sep 17 00:00:00 2001 From: Colin Cross Date: Mon, 5 Apr 2010 13:16:42 -0700 Subject: [ARM] tegra: Add APB DMA support The APB DMA block handles DMA transfers to and from some peripherals in the Tegra SOC. It reads from sequential addresses on the memory bus, and writes repeatedly to the same address on the APB bus. Two transfer modes are supported, oneshot for transferring a known size to or from a peripheral, and continuous for streaming data. In continuous mode, a callback occurs when the buffer is half full to allow the existing data to be handled and a new request queued.x v2 changes: dma API no longer uses PTR_ERR Signed-off-by: Erik Gilling Signed-off-by: Colin Cross --- arch/arm/mach-tegra/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'arch/arm/mach-tegra/Kconfig') diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig index a57713c1954a..8e32d9d7ec8d 100644 --- a/arch/arm/mach-tegra/Kconfig +++ b/arch/arm/mach-tegra/Kconfig @@ -47,4 +47,11 @@ config TEGRA_DEBUG_UARTE endchoice +config TEGRA_SYSTEM_DMA + bool "Enable system DMA driver for NVIDIA Tegra SoCs" + default y + help + Adds system DMA functionality for NVIDIA Tegra SoCs, used by + several Tegra device drivers + endif -- cgit v1.2.3