From: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
Because this will trigger "Unclaimed register" messages. This can be
reproduced by running the pm_rpm tests of the test suite. It can
probably be reproduced by any of the tests that do modesets too.
Regression introduced by:
commit acfa75b02e72bad7c93564ac379712e29c001432
Author: Daniel Vetter <daniel.vetter@xxxxxxxx>
Date: Thu Apr 24 23:54:51 2014 +0200
drm/i915: Simplify audio handling on DDI ports
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_ddi.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 355f569..54a3bb7 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1372,10 +1372,12 @@ static void intel_disable_ddi(struct intel_encoder *intel_encoder)
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t tmp;
- tmp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD);
- tmp &= ~((AUDIO_OUTPUT_ENABLE_A | AUDIO_ELD_VALID_A) <<
- (pipe * 4));
- I915_WRITE(HSW_AUD_PIN_ELD_CP_VLD, tmp);
+ if (intel_display_power_enabled(dev_priv, POWER_DOMAIN_AUDIO)) {
+ tmp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD);
+ tmp &= ~((AUDIO_OUTPUT_ENABLE_A | AUDIO_ELD_VALID_A) <<
+ (pipe * 4));
+ I915_WRITE(HSW_AUD_PIN_ELD_CP_VLD, tmp);
+ }
if (type == INTEL_OUTPUT_EDP) {
struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
--
1.9.0
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