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drm/i915: Fix legacy BLC event for pipe A 

OpRegion event on 965G requires legacy BLC event enabled in pipe stat. As LVDS
could be on either pipe now, we should enable BLC event on both pipe. If fail to
do so, we couldn't handle the brightness request triggered from graphics
opregion.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Zhao Yakui 2010-04-07 17:11:21 +08:00 committed by Eric Anholt
parent d275f6614e
commit edcb49ca34
1 changed files with 7 additions and 2 deletions
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9
drivers/gpu/drm/i915/i915_irq.c
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@ -168,9 +168,13 @@ void intel_enable_asle (struct drm_device *dev)
if (HAS_PCH_SPLIT(dev))
ironlake_enable_display_irq(dev_priv, DE_GSE);
else
else {
i915_enable_pipestat(dev_priv, 1,
I915_LEGACY_BLC_EVENT_ENABLE);
if (IS_I965G(dev))
i915_enable_pipestat(dev_priv, 0,
I915_LEGACY_BLC_EVENT_ENABLE);
}
}
/**
@ -945,7 +949,8 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
intel_finish_page_flip(dev, 1);
}
if ((pipeb_stats & I915_LEGACY_BLC_EVENT_STATUS) ||
if ((pipea_stats & I915_LEGACY_BLC_EVENT_STATUS) ||
(pipeb_stats & I915_LEGACY_BLC_EVENT_STATUS) ||
(iir & I915_ASLE_INTERRUPT))
opregion_asle_intr(dev);