drivers/dma/dw_dmac: make driver's endianness configurable

The dw_dmac driver was originally developed for avr32 to be used with the
Synopsys DesignWare AHB DMA controller.  Starting from 2.6.38, access to
the device's i/o memory was done with the little-endian readl/writel
functions(1)

This broke the driver for the avr32 platform, because it needs big
(native) endian accessors.  This patch makes the endianness configurable
using 'DW_DMAC_BIG_ENDIAN_IO', which will default be true for AVR32

I submitted this patch before(2) but then waited for Andy to finish other
changes to the same module(3).

(1) https://patchwork.kernel.org/patch/608211
(2) https://lkml.org/lkml/2012/8/26/148
(3) https://lkml.org/lkml/2012/9/21/173

Signed-off-by: Hein Tibosch <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Cc: Andy Shevchenko <[email protected]>
Acked-by: Viresh Kumar <[email protected]>
Cc: Hans-Christian Egtvedt <[email protected]>
Cc: Ludovic Desroches <[email protected]>
Cc: Havard Skinnemoen <[email protected]>
Cc: Nicolas Ferre <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions