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drm/i915/dvo-ch7xxx: fix get_hw_state

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The boot-up state seems to be all-zeros, so it's safer to check for
the bits that need to be set when the dvo encoder is in the dpms on
state, than checking the bits we set when it's in the off state.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=55047
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2012-10-11 18:43:52 +02:00
parent fa55583797
commit 4afa0ace42
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/i915/dvo_ch7xxx.c
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@ -303,10 +303,10 @@ static bool ch7xxx_get_hw_state(struct intel_dvo_device *dvo)
ch7xxx_readb(dvo, CH7xxx_PM, &val);
if (val & CH7xxx_PM_FPD)
return false;
else
if (val & (CH7xxx_PM_DVIL | CH7xxx_PM_DVIP))
return true;
else
return false;
}
static void ch7xxx_dump_regs(struct intel_dvo_device *dvo)