From 85364905f9ae12d19cb34099257d493e5d9a0c4e Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Thu, 3 Dec 2009 09:52:43 -0800 Subject: [PATCH] drm/i915: warn if Pineview CxSR can't be enabled If we don't detect a supported memory configuration, we can't enable CxSR. Warn the user in this case so they can file a bug. --- drivers/gpu/drm/i915/intel_display.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 22dcd0851637..6b9dd672dd59 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -4740,6 +4740,13 @@ void intel_modeset_init(struct drm_device *dev) (unsigned long)dev); intel_setup_overlay(dev); + + if (IS_IGD(dev) && !intel_get_cxsr_latency(IS_IGDG(dev), + dev_priv->fsb_freq, + dev_priv->mem_freq)) + DRM_INFO("failed to find known CxSR latency " + "(found fsb freq %d, mem freq %d), disabling CxSR\n", + dev_priv->fsb_freq, dev_priv->mem_freq); } void intel_modeset_cleanup(struct drm_device *dev) -- 2.20.1