drm/i915: Fix the IBX transcoder B workarounds

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Currently the IBX transcoder B workarounds are not working correctly.
Well, the HDMI one seems to be working somewhat, but the DP one is
definitely busted.

After a bit of experimentation it looks like the best way to make this
work is first disable the port on transcoder B, and then re-enable it
transcoder A, and immediately disable it again.

We can also clean up the code by noting that we can't be called without
a valid crtc. And also note that port A on ILK does not need the
workaround, so let's check for that one too.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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This commit is contained in:

Ville Syrjälä 2015-05-05 17:17:34 +03:00 • committed by Daniel Vetter

parent e8504ee293

commit 1612c8bd4c

3 changed files with 60 additions and 68 deletions

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37

drivers/gpu/drm/i915/intel_dp.c

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50

drivers/gpu/drm/i915/intel_hdmi.c

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37

drivers/gpu/drm/i915/intel_sdvo.c

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