[PATCH] dmaengine: implement pause and resume for dw_dmac

[viresh kumar]

On 04/19/2011 10:59 AM, viresh kumar wrote:
> On 04/19/2011 06:01 AM, Linus Walleij wrote:
>> > It seems that the SPEAr needs this.
>> > 
>> > Signed-off-by: Linus Walleij <linus.walleij at linaro.org>
> Thanks for sending this.
> Actually i wasn't sure that disabling channel will simply pause it, and not
> finish the transfer. So, didn't went for this change.
> 
>> > ---
>> >  drivers/dma/dw_dmac.c      |   22 ++++++++++++++++++++--
>> >  drivers/dma/dw_dmac_regs.h |    1 +
>> >  2 files changed, 21 insertions(+), 2 deletions(-)

Moreover, dwc_tx_status() must be updated to add following code:

	if (dwc->paused)
		return DMA_PAUSED;

Will do that while sending it in my patchset.

-- 
viresh