Re: [PATCH 0/3] OMAP: DSS: Low power refresh rate support for dss

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Hi,

On Tue, 2009-12-22 at 10:37 +0100, ext Y, Kishore wrote:
> These patches add Low Power Refresh functionality for DSS.
> Short info on patches
> 
> DSS PM_WKEN to refill DMA
> 	- DMA request to refill the FIFO will wake up the CORE domain
> DSS2 LPR enable and disable function definition
> 	- LPR enable and disable functions implementing FIFO merge
> DSS2 sysfs enteries to export LPR enable to user
> 	- sysfs entries for above methods

I don't like this approach very much. Fifo merge should be automatic,
not user configurable. It should be integrated into the apply/cache
mechanism in manager.c.

I actually implemented fifo merge at some point during DSS2 development,
but I had to remove it when changing the driver/device model. I haven't
had time to implement it again, as it not very trivial. The old version
can be found in N900's kernel, and earlier snapshots of DSS2.

 Tomi


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