dmaegine: dw-axi-dmac: Support device_prep_dma_cyclic()

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Add support for device_prep_dma_cyclic() callback function to benefit
DMA cyclic client, for example ALSA.

Existing AxiDMA driver only support data transfer between memory to memory.
Data transfer between device to memory and memory to device in cyclic mode
would failed if this interface is not supported by the AxiDMA driver.

Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Link: https://lore.kernel.org/r/20210125013255.25799-8-jee.heng.sia@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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This commit is contained in:

Sia Jee Heng 2021-01-25 09:32:45 +08:00 • committed by Vinod Koul

parent eec9176053

commit 1deb96c0fa

2 changed files with 106 additions and 7 deletions

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111

drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c

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2

drivers/dma/dw-axi-dmac/dw-axi-dmac.h

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