diff options
| author | Kai Vehmanen <kai.vehmanen@linux.intel.com> | 2021-10-21 13:59:15 +0300 |
|---|---|---|
| committer | Uma Shankar <uma.shankar@intel.com> | 2021-11-02 15:45:52 +0530 |
| commit | 112a87c48e83cf226325735009712b515f48c495 (patch) | |
| tree | b739236e324d7a506d18597327ce7d3c56d858dd /drivers/gpu/drm/i915/display/intel_audio.h | |
| parent | 0826edb6a5e5b32d38b89d2df3d74c4dac8828dc (diff) | |
drm/i915/display: program audio CDCLK-TS for keepalives
XE_LPD display adds support for display audio codec keepalive feature.
This feature works also when display codec is in D3 state and the audio
link is off (BCLK off). To enable this functionality, display driver
must update the AUD_TS_CDCLK_M/N registers whenever CDCLK is changed.
Actual timestamps are generated only when the audio codec driver
specifically enables the KeepAlive (KAE) feature.
This patch adds new hooks to intel_set_cdclk() in order to inform
display audio driver when CDCLK change is started and when it is
complete.
Bspec: 53679
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211021105915.4128635-1-kai.vehmanen@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_audio.h')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_audio.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_audio.h b/drivers/gpu/drm/i915/display/intel_audio.h index a3657c7a7ba2..dcb259dd2da7 100644 --- a/drivers/gpu/drm/i915/display/intel_audio.h +++ b/drivers/gpu/drm/i915/display/intel_audio.h @@ -18,6 +18,8 @@ void intel_audio_codec_enable(struct intel_encoder *encoder, void intel_audio_codec_disable(struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, const struct drm_connector_state *old_conn_state); +void intel_audio_cdclk_change_pre(struct drm_i915_private *dev_priv); +void intel_audio_cdclk_change_post(struct drm_i915_private *dev_priv); void intel_audio_init(struct drm_i915_private *dev_priv); void intel_audio_deinit(struct drm_i915_private *dev_priv); |