diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_audio.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_audio.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index c4312177b0ee..3da9b8409f20 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -470,6 +470,32 @@ static void i915_audio_component_put_power(struct device *dev) intel_display_power_put(dev_to_i915(dev), POWER_DOMAIN_AUDIO); } +static void i915_audio_component_codec_wake_override(struct device *dev, + bool enable) +{ + struct drm_i915_private *dev_priv = dev_to_i915(dev); + u32 tmp; + + if (!IS_SKYLAKE(dev_priv)) + return; + + /* + * Enable/disable generating the codec wake signal, overriding the + * internal logic to generate the codec wake to controller. + */ + tmp = I915_READ(HSW_AUD_CHICKENBIT); + tmp &= ~SKL_AUD_CODEC_WAKE_SIGNAL; + I915_WRITE(HSW_AUD_CHICKENBIT, tmp); + usleep_range(1000, 1500); + + if (enable) { + tmp = I915_READ(HSW_AUD_CHICKENBIT); + tmp |= SKL_AUD_CODEC_WAKE_SIGNAL; + I915_WRITE(HSW_AUD_CHICKENBIT, tmp); + usleep_range(1000, 1500); + } +} + /* Get CDCLK in kHz */ static int i915_audio_component_get_cdclk_freq(struct device *dev) { @@ -491,6 +517,7 @@ static const struct i915_audio_component_ops i915_audio_component_ops = { .owner = THIS_MODULE, .get_power = i915_audio_component_get_power, .put_power = i915_audio_component_put_power, + .codec_wake_override = i915_audio_component_codec_wake_override, .get_cdclk_freq = i915_audio_component_get_cdclk_freq, }; |