Re: [PATCH] radeonfb: (#2) Implement proper workarounds for PLLaccesses

[Andreas Schwab]

Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> writes:

> On Fri, 2005-04-08 at 01:58 +0200, Andreas Schwab wrote:
>> Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> writes:
>> 
>> > Yes, that's very extreme, I suspect somebody is banging on set_par or
>> > something like that.
>> 
>> fb_setcolreg is it.
>
> Ok, what about that patch:
>
> ---
>
> This patch adds to the fbdev interface a set_cmap callback that allow
> the driver to "batch" palette changes. This is useful for drivers like
> radeonfb which might require lenghtly workarounds on palette accesses,
> thus allowing to factor out those workarounds efficiently.

This makes it better. But there is still a delay of half a second, and
there is an annoying flicker when switching from X to the console.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@xxxxxxx
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