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drm/i915: warn if Pineview CxSR can't be enabled
author
Jesse Barnes
<jbarnes@virtuousgeek.org>
Thu, 3 Dec 2009 17:52:43 +0000
(09:52 -0800)
committer
Eric Anholt
<eric@anholt.net>
Mon, 7 Dec 2009 20:11:52 +0000
(12:11 -0800)
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
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diff --git
a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 22dcd0851637afb041d8169bb2b0096aaa6d5e91..6b9dd672dd5950500cda28d2c1c4ad55e4502854 100644
(file)
--- 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)