Blackfin arch: rewrite dma_memcpy() and dma in/out functions

Browse source

- unify all dma in/out functions (takes ~35 lines of code now)
- unify dma_memcpy with dma in/out functions (1 place that touches MDMA0
  registers)
- add support for 32bit transfers
- cleanup dma_memcpy code to be much more readable
- irqs are disabled only while programming MDMA registers rather than
  the entire transaction

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

...

This commit is contained in:

Mike Frysinger 2009-01-07 23:14:39 +08:00 • committed by Bryan Wu

parent 49946e7329

commit dd3dd384df

3 changed files with 156 additions and 366 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

1

arch/blackfin/include/asm/dma.h

View file

519

arch/blackfin/kernel/bfin_dma_5xx.c

View file

2

arch/blackfin/kernel/setup.c

View file