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  1. 06 Apr, 2023 1 commit
    • Kuninori Morimoto's avatar
      ASoC: soc-dapm.c: tidyup dapm_connect_dai_pair() · 3456aeb0
      Kuninori Morimoto authored
      dapm_connect_dai_pair() handles
      "Normal/Codec2Codec" x "CPU/Codec" x "Playback/Capture".
      
      (A) is "Codec2Codec" case of "CPU"   widget x "Playback/Capture",
      (B) is "Normal"      case of "CPU"   widget x "Playback/Capture",
      (C) is each          case of "Codec" widget.
      
      (X) is handling "Playback" case DAI connecting,
      (Y) is handling "Capture"  case DAI connecting.
      
      	static void dapm_connect_dai_pair(...)
      	{
      		...
      
      (A)		if (dai_link->params) {
      			playback_cpu	= ...
      			capture_cpu	= ...
      (B)		} else {
      			playback_cpu	= ...
      			capture_cpu	= ...
      		}
      
       ^		/* connect BE DAI playback if widgets are valid */
       |		stream = SNDRV_PCM_STREAM_PLAYBACK;
       | (C)		codec = codec_dai->playback_widget;
       |
       |		if (playback_cpu && codec) {
      (X)			if (dai_link->params && !rtd->c2c_widget[stream]) {
       |				...
       |			}
       |
       | (z)			dapm_connect_dai_routes(...);
       v		}
      
      	capture:
       ^		/* connect BE DAI capture if widgets are valid */
       |		stream = SNDRV_PCM_STREAM_CAPTURE;
       | (C)		codec = codec_dai->capture_widget;
       |
       |		if (codec && capture_cpu) {
      (Y)			if (dai_link->params && !rtd->c2c_widget[stream]) {
       |				...
       |			}
       |
       | (z)			dapm_connect_dai_routes(...);
       v		}
      	}
      
      (X) part and (Y) part are almost same.
      Main purpose of these parts (and this function) is calling
      dapm_connect_dai_routes() (= z) on each cases.
      The difference is "parameter"
      (= Normal/Codec2Codec x CPU/Codec x Playback/Capture).
      
      This patch cleanup these, but nothing changed for meaning.
      
      Link: https://lore.kernel.org/r/87ilen6ni4.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
      Link: https://lore.kernel.org/r/877cuqvswc.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: default avatarMark Brown <broonie@kernel.org>
      3456aeb0
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