+ codec_dbg(codec, "hdmi: enabling silent stream pin-NID=0x%x cvt-NID=0x%x\n",
+ per_pin->pin_nid, per_cvt->cvt_nid);
+
+ snd_hda_set_dev_select(codec, per_pin->pin_nid, per_pin->dev_id);
+ snd_hda_codec_write_cache(codec, per_pin->pin_nid, 0,
+ AC_VERB_SET_CONNECT_SEL,
+ per_pin->mux_idx);
+
+ /* configure unused pins to choose other converters */
+ pin_cvt_fixup(codec, per_pin, 0);
+
+ snd_hdac_sync_audio_rate(&codec->core, per_pin->pin_nid,
+ per_pin->dev_id, I915_SILENT_RATE);
+
+ /* trigger silent stream generation in hw */
+ format = snd_hdac_calc_stream_format(I915_SILENT_RATE, I915_SILENT_CHANNELS,
+ I915_SILENT_FORMAT, I915_SILENT_FORMAT_BITS, 0);
+ snd_hda_codec_setup_stream(codec, per_pin->cvt_nid,
+ I915_SILENT_FMT_MASK, I915_SILENT_FMT_MASK, format);
+ usleep_range(100, 200);
+ snd_hda_codec_setup_stream(codec, per_pin->cvt_nid, I915_SILENT_FMT_MASK, 0, format);
+
+ per_pin->channels = I915_SILENT_CHANNELS;