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    SubjectRe: [Intel-gfx] [PATCH 9/9] drm/i915: Disable eDP VDD in a delayed work proc instead of synchronously
    On Tue, 20 Sep 2011 21:51:33 -0700
    Keith Packard <keithp@keithp.com> wrote:
    > Yes, making it cleaner would help a ton. There are some basic problems
    > with the DRM API that make this hard though -- intel_dp_prepare may
    > not ever be followed by a call to intel_dp_commit. That's why I had
    > the VDD AUX stuff get turned off by a delayed work proc instead.
    >
    > Also, leaving VDD AUX high after EDID is fetched means that we can
    > start the mode setting immediately, rather than having to wait for the
    > power-off/power-on delay (which is really long).

    Yeah agreed.

    > What we could do is force VDD AUX off after the panel gets turned on;
    > that would ensure that turning the panel off would actually turn the
    > power off, rather than having VDD stay high for some time after that.

    Yep, that sounds great.

    Thanks,
    Jesse


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