drm/i915: check PPS regs for sanity when using eDP

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If these regs don't have valid values, the panel won't come up, and may
even cause a system hang.  So do a basic sanity check when an eDP panel
is detected.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=44305
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Jesse Barnes 2012-04-10 11:58:04 -07:00 • committed by Daniel Vetter

parent f817586ceb

commit bfa3384a9a

1 changed files with 7 additions and 0 deletions

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drivers/gpu/drm/i915/intel_dp.c

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