linux-kernel - [PATCH 0/2] dw_dmac: repair driver for use with AVR32 (AP7000)

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Date:	Mon, 27 Aug 2012 04:47:43 +0800
From:	Hein Tibosch <hein_tibosch@...oo.es>
To:	viresh kumar <viresh.kumar@...aro.org>
CC:	spear-devel <spear-devel@...t.st.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"ludovic.desroches" <ludovic.desroches@...el.com>,
	Havard Skinnemoen <havard@...nnemoen.net>,
	Nicolas Ferre <nicolas.ferre@...el.com>, egtvedt@...fundet.no,
	Andrew Morton <akpm@...ux-foundation.org>,
	Arnd Bergmann <arnd.bergmann@...aro.org>
Subject: [PATCH 0/2] dw_dmac: repair driver for use with AVR32 (AP7000)

After some recent changes to dw_dmac, the driver got broken
for the AVR32 platform for two reasons:

The accessors to i/o memory had become little-endian.
The maximum transfer width on the memory side was increased
from 32 to 64 bits.

These patches repair the driver by:
1. making the endianness configurable through Kconfig,
for AVR32 it will become big-endian
2. making the maximum memory transfer width configurable
It can be set in the code within arch

For non-avr32 (ARM) platforms, nothing has to be changed.

Thanks to Viresh and Arnd for reviewing

Hein Tibosch (2):

  dw_dmac: make driver endianness configurable
  dw_dmac: max_mem_width limits value for SRC/DST_TR_WID register

 drivers/dma/Kconfig        |    8 ++++++++
 drivers/dma/dw_dmac.c      |    8 ++++++++
 drivers/dma/dw_dmac_regs.h |   23 +++++++++++++++++++++++
 include/linux/dw_dmac.h    |    3 +++
 4 files changed, 42 insertions(+), 0 deletions(-)

-- 

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