From cd2e9e908a86c44c83026acd95520a2761f0d64c Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Fri, 6 Dec 2013 20:34:21 -0200 Subject: [PATCH] drm/i915: do adapter power state notification at runtime PM Now that we are actually setting the device to the D3 state, we should issue the notification. The opregion spec says we should send the message before the adapter is about to be placed in a lower power state, and after the adapter is placed in a higher power state. Jani originally wrote a similar patch for PC8, but then we discovered that we were not really changing the PCI D states when enabling/disabling PC8, so we had to postpone his patch. v2: - Improve commit message, explaining the expected state. v3: - Rebase. Cc: Jani Nikula Credits-to: Jani Nikula Reviewed-by: Rodrigo Vivi (v2) Signed-off-by: Paulo Zanoni Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 7d2136170293..2137a33d5bb2 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -915,6 +915,7 @@ static int i915_runtime_suspend(struct device *device) DRM_DEBUG_KMS("Suspending device\n"); dev_priv->pm.suspended = true; + intel_opregion_notify_adapter(dev, PCI_D3cold); return 0; } @@ -929,6 +930,7 @@ static int i915_runtime_resume(struct device *device) DRM_DEBUG_KMS("Resuming device\n"); + intel_opregion_notify_adapter(dev, PCI_D0); dev_priv->pm.suspended = false; return 0; -- 2.20.1