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

Benjamin Herrenschmidt [off-list ref] writes:

On Fri, 2005-04-08 at 01:58 +0200, Andreas Schwab wrote:

quoted

Benjamin Herrenschmidt [off-list ref] writes:

quoted

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.

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Andreas Schwab, SuSE Labs, schwab@suse.de
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