dw_dmac: introduce software emulation of LLP transfers

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Some controllers have the reduced functionality where the LLP multi block
transfers are not supported. This patch introduces a support of such
controllers. In case of memory copy or scatter-gather lists it emulates LLP
transfers via bunch of the regular single block ones.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>

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Andy Shevchenko 2012-09-21 15:05:49 +03:00 • committed by Vinod Koul

parent a09820043c

commit fed2574b3c

2 changed files with 101 additions and 4 deletions

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99

drivers/dma/dw_dmac.c

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6

drivers/dma/dw_dmac_regs.h

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