dmaengine: dw: properly read DWC_PARAMS register

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In case we have less than maximum allowed channels (8) and autoconfiguration is
enabled the DWC_PARAMS read is wrong because it uses different arithmetic to
what is needed for channel priority setup.

Re-do the caclulations properly. This now works on AVR32 board well.

Fixes: fed2574b3c (dw_dmac: introduce software emulation of LLP transfers)
Cc: yitian.bu@tangramtek.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

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Andy Shevchenko 2015-09-28 18:57:03 +03:00 • committed by Vinod Koul

parent ee08b59d47

commit 6bea0f6d1c

1 changed files with 2 additions and 2 deletions

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drivers/dma/dw/core.c

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