tree 882182c5c8944aa5f42760a4e4d475ab7e5f2b48
parent 822974aea875348e69fb6b6d2078ae8372eeec66
author Paulo Zanoni <paulo.r.zanoni@intel.com> 1338234172 -0300
committer Daniel Vetter <daniel.vetter@ffwll.ch> 1338407566 +0200

drm/i915: don't wait for vblank while writing InfoFrames

This function is called when the pipe is disabled, so it always gets
the 50ms timeout.

This function is called once for each InfoFrame, so we actually get a
100ms timeout. Will be more if we add more InfoFrames.

Also, the spec says we need to "wait for a VSync to ensure completion
of any pending DIP transmissions", not for a VBlank. OTOH, the
register documentation suggests that the DIPs are sent *during* the
VSync, so shouldn't we be waiting until *after* the VSync to ensure
all DIPs are sent?

So this wait_for_vblank seems, besides useless, totally wrong.

If we ever want to change some specific InfoFrame on-the-fly (outside
of the modeset code), the code that changes the InfoFrame will have to
do the waiting itself, and properly.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>