drm/i915/audio: Fix audio enumeration issue on BXT

On Apollolake, with stress test warm reboot, audio card was not getting
enumerated after reboot. This was a spurious issue happening on
Apollolake. HW codec and HD audio controller link was going out of sync
for which there was a fix in i915 driver but was not getting invoked for
BXT. Extending this fix to BXT as well.

Tested on apollolake chromebook by stress test warm reboot with 2500
iterations.

Bspec: 21829

Signed-off-by: Gaurav K Singh <gaurav.k.singh@intel.com>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1522946544-11524-1-git-send-email-gaurav.k.singh@intel.com

diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c
index 709d6ca680747d8d4458c72945093a8052d6f8c4..656f6c931341ed91c5f8521ca791c167f123d96a 100644 (file)
--- a/drivers/gpu/drm/i915/intel_audio.c
+++ b/drivers/gpu/drm/i915/intel_audio.c
@@ -729,7 +729,7 @@ static void i915_audio_component_codec_wake_override(struct device *kdev,
        struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
        u32 tmp;
 
-       if (!IS_GEN9_BC(dev_priv))
+       if (!IS_GEN9_BC(dev_priv) && !IS_BROXTON(dev_priv))
                return;
 
        i915_audio_component_get_power(kdev);