[PATCH] dmaengine: add dma_ctrl_cmd to pass buffer stride configuration
From: Sundaram Raju <hidden>
Date: 2011-07-10 15:03:23
Also in:
linux-omap
Subsystem:
dma generic offload engine subsystem, the rest · Maintainers:
Vinod Koul, Linus Torvalds
Added new dma_ctrl_cmd TI_DMA_STRIDE_CONFIG to pass the TI DMA controller specific configurations on how a buffer must be walked through and how data is picked for transfer based on a specified pattern over the channel. The configuration passed is specific to the TI DMA controller used. Signed-off-by: Sundaram Raju <redacted> --- include/linux/dmaengine.h | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index eee7add..51dadc4 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h@@ -123,6 +123,10 @@ enum dma_ctrl_flags { * command. * @FSLDMA_EXTERNAL_START: this command will put the Freescale DMA controller * into external start mode. + * @TI_DMA_STRIDE_CONFIG: this command is only implemented by TI DMA + * controllers that need to pass special configuration on how to walk through + * the buffer to pick up data in a specified pattern to be transferred in + * the channel. */ enum dma_ctrl_cmd { DMA_TERMINATE_ALL,
@@ -130,6 +134,7 @@ enum dma_ctrl_cmd { DMA_RESUME, DMA_SLAVE_CONFIG, FSLDMA_EXTERNAL_START, + TI_DMA_STRIDE_CONFIG, }; /**
--
1.6.2.4