ASoC: Add multiple CPU DAI support in DAPM

DAPM handles DAIs during soc_dapm_stream_event() and during addition
and creation of DAI widgets i.e., dapm_add_valid_dai_widget() and
dapm_connect_dai_link_widgets().

Extend these functions to handle multiple cpu dai.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20200225133917.21314-5-yung-chuan.liao@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 539a1ea..6ce024d 100644 (file)
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -4361,9 +4361,19 @@ static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
        struct snd_soc_dai *codec_dai;
        int i;
 
-       for_each_rtd_codec_dai(rtd, i, codec_dai)
-               dapm_add_valid_dai_widget(card, rtd,
-                                         codec_dai, rtd->cpu_dais[0]);
+       if (rtd->num_cpus == 1) {
+               for_each_rtd_codec_dai(rtd, i, codec_dai)
+                       dapm_add_valid_dai_widget(card, rtd, codec_dai,
+                                                 rtd->cpu_dais[0]);
+       } else if (rtd->num_codecs == rtd->num_cpus) {
+               for_each_rtd_codec_dai(rtd, i, codec_dai)
+                       dapm_add_valid_dai_widget(card, rtd, codec_dai,
+                                                 rtd->cpu_dais[i]);
+       } else {
+               dev_err(card->dev,
+                       "N cpus to M codecs link is not supported yet\n");
+       }
+
 }
 
 static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
@@ -4424,9 +4434,11 @@ static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
        int event)
 {
        struct snd_soc_dai *codec_dai;
+       struct snd_soc_dai *cpu_dai;
        int i;
 
-       soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event);
+       for_each_rtd_cpu_dai(rtd, i, cpu_dai)
+               soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event);
        for_each_rtd_codec_dai(rtd, i, codec_dai)
                soc_dapm_dai_stream_event(codec_dai, stream, event);