Re: OMAP3 DSS Custom Color Palettes

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On 6 October 2016 at 16:05, Tomi Valkeinen <tomi.valkeinen@xxxxxx> wrote:
> Ah I spoke too soon. Gamma table is supported for OMAP4+. OMAP3 deals
> with the gamma table in different way, and that's not implemented.

Ah it writes directly to the gamma table. Wouldn't omap3-style loading
(which iirc is also supported in omap4+ for the lcd1 output at least)
be preferable anyhow since it is frame-synchronized hence avoids
tearing?

It doesn't look terribly complicated either: stick the table in dma
coherent memory, write the address to register and set a bit to load
it? The biggest annoyance is probably the requirement to enable the
graphics pipeline even if it isn't being used otherwise (and then
disable it again on palette loaded irq). Of course I don't know if
there's any fun details not apparent from the documentation.

Matthijs
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