Andy Shevchenko c072e113b8 dmaengine: dw: set polarity of handshake interface ...

Intel Quark UART uses DesignWare DMA IP. Though the DMA IP is connected in such
way that handshake interface uses inverted polarity. We have to provide a
possibility to set this in the DMA driver when configuring a channel.

Introduce a new member of custom slave configuration called 'hs_polarity' and
set active low polarity in case this value is 'true'.

Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Bryan O'Donoghue <pure.logic@nexus-software.ie>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2016-08-31 16:13:29 +02:00

..

core.c

dmaengine: dw: set polarity of handshake interface

2016-08-31 16:13:29 +02:00

internal.h

dmaengine: dw: export probe()/remove() and Co to users

2014-10-15 20:31:05 +05:30

Kconfig

dmaengine: sort the dw Kconfig

2015-08-24 13:58:18 +05:30

Makefile

dma: dw: add PCI part of the driver

2013-07-05 11:40:45 +05:30

pci.c

dmaengine: dw: pass platform data via struct dw_dma_chip

2016-05-02 15:31:05 +05:30

platform.c

dmaengine: dw: pass platform data via struct dw_dma_chip

2016-05-02 15:31:05 +05:30

regs.h

dmaengine: dw: keep copy of custom slave config in dwc

2016-08-31 16:13:29 +02:00