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drm/i915/audio: add audio codec disable on g4x 

This not based on any documentation...

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
hifive-unleashed-5.1
Jani Nikula 2014-10-27 16:26:57 +02:00 committed by Daniel Vetter
parent c1dec79aae
commit 76d8d3e5b5
1 changed files with 20 additions and 0 deletions
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20
drivers/gpu/drm/i915/intel_audio.c
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@ -93,6 +93,25 @@ static bool intel_eld_uptodate(struct drm_connector *connector,
return true;
}
static void g4x_audio_codec_disable(struct intel_encoder *encoder)
{
struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
uint32_t eldv, tmp;
DRM_DEBUG_KMS("Disable audio codec\n");
tmp = I915_READ(G4X_AUD_VID_DID);
if (tmp == INTEL_AUDIO_DEVBLC || tmp == INTEL_AUDIO_DEVCL)
eldv = G4X_ELDV_DEVCL_DEVBLC;
else
eldv = G4X_ELDV_DEVCTG;
/* Invalidate ELD */
tmp = I915_READ(G4X_AUD_CNTL_ST);
tmp &= ~eldv;
I915_WRITE(G4X_AUD_CNTL_ST, tmp);
}
static void g4x_audio_codec_enable(struct drm_connector *connector,
struct intel_encoder *encoder,
struct drm_display_mode *mode)
@ -408,6 +427,7 @@ void intel_init_audio(struct drm_device *dev)
if (IS_G4X(dev)) {
dev_priv->display.audio_codec_enable = g4x_audio_codec_enable;
dev_priv->display.audio_codec_disable = g4x_audio_codec_disable;
} else if (IS_VALLEYVIEW(dev)) {
dev_priv->display.audio_codec_enable = ilk_audio_codec_enable;
dev_priv->display.audio_codec_disable = ilk_audio_codec_disable;