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drm/i915: check the power well on i915_pipe_enabled

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This fixes "unclaimed register" messages when the power well is
disabled and there's a GPU hang.

v2: Use the new intel_display_power_enabled().
v3: Use the new domains for intel_display_power_enabled().

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Paulo Zanoni 2013-05-03 12:15:39 -03:00 committed by Daniel Vetter
parent 12d217c795
commit 71f8ba6b7e
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/i915/i915_irq.c
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@ -384,6 +384,10 @@ i915_pipe_enabled(struct drm_device *dev, int pipe)
enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
pipe);
if (!intel_display_power_enabled(dev,
POWER_DOMAIN_TRANSCODER(cpu_transcoder)))
return false;
return I915_READ(PIPECONF(cpu_transcoder)) & PIPECONF_ENABLE;
}