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authorColin Cross <ccross@android.com>2010-04-06 00:16:42 +0400
committerColin Cross <ccross@android.com>2010-10-22 05:12:35 +0400
commit4de3a8fa334851e642d4889d6afa6e5d3daea10a (patch)
tree955a73509a5745ee4e7a71fa42f10c0c57632aa5 /arch/arm/mach-tegra/Kconfig
parent7056d423f16103f6700569f60ca842d91bfaabab (diff)
downloadlinux-4de3a8fa334851e642d4889d6afa6e5d3daea10a.tar.xz
[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 <konkers@android.com> Signed-off-by: Colin Cross <ccross@android.com>
Diffstat (limited to 'arch/arm/mach-tegra/Kconfig')
-rw-r--r--arch/arm/mach-tegra/Kconfig7
1 files changed, 7 insertions, 0 deletions
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