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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2013-06-20 14:13:04 +0400
committerFelipe Balbi <balbi@ti.com>2013-08-09 18:40:16 +0400
commit9b3452d1fa3c017d3664ff9e6a601daa6e0576eb (patch)
treeac2fdd71c45975f2430d094ef138ccd0a2d835c0 /drivers/dma/Kconfig
parent97238b35d5bbb5d5312d83c30a429824b777619f (diff)
downloadlinux-9b3452d1fa3c017d3664ff9e6a601daa6e0576eb.tar.xz
usb: musb dma: add cppi41 dma driver
This driver is currently used by musb' cppi41 couter part. I may merge both dma engine user of musb at some point but not just yet. The driver seems to work in RX/TX mode in host mode, tested on mass storage. I increaed the size of the TX / RX transfers and waited for the core code to cancel a transfers and it seems to recover. v2..3: - use mall transfers on RX side and check data toggle. - use rndis mode on tx side so we haveon interrupt for 4096 transfers. - remove custom "transferred" hack and use dmaengine_tx_status() to compute the total amount of data that has been transferred. - cancel transfers and reclaim descriptors v1..v2: - RX path added - dma mode 0 & 1 is working - device tree nodes re-created. Cc: Vinod Koul <vinod.koul@intel.com> Cc: Dan Williams <djbw@fb.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/dma/Kconfig')
-rw-r--r--drivers/dma/Kconfig8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index 6825957c97fb..77bc480117b7 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -287,6 +287,14 @@ config DMA_OMAP
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
+config TI_CPPI41
+ tristate "AM33xx CPPI41 DMA support"
+ depends on ARCH_OMAP
+ select DMA_ENGINE
+ help
+ The Communications Port Programming Interface (CPPI) 4.1 DMA engine
+ is currently used by the USB driver on AM335x platforms.
+
config MMP_PDMA
bool "MMP PDMA support"
depends on (ARCH_MMP || ARCH_PXA)