On Haswell/Broadwell, the HD-Audio block is inside the HDMI/display power well and so the sna-hda audio codec acquires the display power well while it is operational. However, Skylake separates the powerwells again, and so we must remember to acquire the rpm wakeref for ourselves whilst tweaking the registers.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96214 Fixes: 03b135cebc47 "ALSA: hda - remove dependency on i915 power well for SKL") Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk> Cc: Libin Yang <libin.y...@intel.com> Cc: Takashi Iwai <ti...@suse.de> Cc: Marius Vlad <marius.c.v...@intel.com> --- drivers/gpu/drm/i915/intel_audio.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 5d5f6bc10e85..eedcce6478ef 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -600,6 +600,8 @@ static void i915_audio_component_codec_wake_override(struct device *dev, if (!IS_SKYLAKE(dev_priv) && !IS_KABYLAKE(dev_priv)) return; + intel_runtime_pm_get(dev_priv); + /* * Enable/disable generating the codec wake signal, overriding the * internal logic to generate the codec wake to controller. @@ -615,6 +617,8 @@ static void i915_audio_component_codec_wake_override(struct device *dev, I915_WRITE(HSW_AUD_CHICKENBIT, tmp); usleep_range(1000, 1500); } + + intel_runtime_pm_put(dev_priv); } /* Get CDCLK in kHz */ @@ -648,6 +652,8 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, !IS_HASWELL(dev_priv)) return 0; + intel_runtime_pm_get(dev_priv); + mutex_lock(&dev_priv->av_mutex); /* 1. get the pipe */ intel_encoder = dev_priv->dig_port_map[port]; @@ -698,6 +704,7 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, unlock: mutex_unlock(&dev_priv->av_mutex); + intel_runtime_pm_put(dev_priv); return err; } -- 2.8.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
