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(parent: a098200) | patch
dw_dmac: introduce software emulation of LLP transfers
authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Fri, 21 Sep 2012 12:05:49 +0000 (15:05 +0300)
committerVinod Koul <vinod.koul@linux.intel.com>
Thu, 27 Sep 2012 10:05:23 +0000 (15:35 +0530)
commitfed2574b3c9f44556ed4f5cb17f63b15edd87d06
tree1b080d85ea7e32778dae4d0dfce9d961bd5efee0tree | snapshot (tar.gz zip)
parenta09820043c9e11149145a1ec221eed4a7b42dccecommit | diff
dw_dmac: introduce software emulation of LLP transfers

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>
drivers/dma/dw_dmac.c diff | blob | blame | history
drivers/dma/dw_dmac_regs.h diff | blob | blame | history