From: Zhao Yakui Date: Wed, 7 Apr 2010 09:11:21 +0000 (+0800) Subject: drm/i915: Fix legacy BLC event for pipe A X-Git-Tag: firefly_0821_release~9833^2~1599^2~116^2~36 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=edcb49ca34e38123675f83994d743d3d6ff772d9;p=firefly-linux-kernel-4.4.55.git 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 Signed-off-by: Zhenyu Wang Signed-off-by: Eric Anholt --- diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index c0ebcea2a375..7701cbd8b07a 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -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);