drm/i915: get runtime PM while trying to detect CRT

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Otherwise we'll read registers that return 0xffffffff, trigger some
WARNs, think CRT is actually connected (because certain bits are 1),
and fail the drm-resources-equal testcase!

Tested on a SNB machine with runtime PM support (which is not upstream
yet, but is already on my public tree at freedesktop.org, and will
hopefully eventually become upstream).

Testcase: igt/pm_pc8/drm-resources-equal
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

...

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Paulo Zanoni 2014-02-21 13:52:22 -03:00 • committed by Daniel Vetter

parent 6d88064edc

commit c19a0df2ac

1 changed files with 19 additions and 7 deletions

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drivers/gpu/drm/i915/intel_crt.c

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