linux-kernel - Re: [PATCH 3/8] dmaengine: ste_dma40: Actually write the runtime configuration to registers

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Date:	Tue, 9 Apr 2013 20:07:16 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linus.walleij@...ricsson.com
Subject: Re: [PATCH 3/8] dmaengine: ste_dma40: Actually write the runtime
 configuration to registers

On Tue, 09 Apr 2013, Arnd Bergmann wrote:

> On Tuesday 09 April 2013, Lee Jones wrote:
> > Someone has spent a fair amount of effort writing a runtime configuration
> > changing algorithm for DMA clients. However, the config appears to never
> > actually make it to hardware. In order for the configuration to take hold
> > we need to issue a d40_config_write(), as this is the routine which writes
> > it into the hardware's registers.
> > 
> > Signed-off-by: Lee Jones <lee.jones@...aro.org>
> 
> So this makes the runtime_addr selection work I suppose, but the
> runtime_direction still isn't used anywhere, correct?

Yes, I have this on my TODO to speak with Linus, as he was the one who
mainlined it.

-- 
Lee Jones
Linaro ST-Ericsson Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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