Merge series "ASoC: Intel: machine driver updates for 5.9" from Pierre-Louis Bossart...

[platform/kernel/linux-starfive.git] / sound / soc / soc-dai.c

diff --git a/sound/soc/soc-dai.c b/sound/soc/soc-dai.c
index c89a192..98f0c98 100644 (file)
--- a/sound/soc/soc-dai.c
+++ b/sound/soc/soc-dai.c
@@ -393,6 +393,44 @@ bool snd_soc_dai_stream_valid(struct snd_soc_dai *dai, int dir)
        return stream->channels_min;
 }
 
+/*
+ * snd_soc_dai_link_set_capabilities() - set dai_link properties based on its DAIs
+ */
+void snd_soc_dai_link_set_capabilities(struct snd_soc_dai_link *dai_link)
+{
+       struct snd_soc_dai_link_component *cpu;
+       struct snd_soc_dai_link_component *codec;
+       struct snd_soc_dai *dai;
+       bool supported[SNDRV_PCM_STREAM_LAST + 1];
+       int direction;
+       int i;
+
+       for_each_pcm_streams(direction) {
+               supported[direction] = true;
+
+               for_each_link_cpus(dai_link, i, cpu) {
+                       dai = snd_soc_find_dai(cpu);
+                       if (!dai || !snd_soc_dai_stream_valid(dai, direction)) {
+                               supported[direction] = false;
+                               break;
+                       }
+               }
+               if (!supported[direction])
+                       continue;
+               for_each_link_codecs(dai_link, i, codec) {
+                       dai = snd_soc_find_dai(codec);
+                       if (!dai || !snd_soc_dai_stream_valid(dai, direction)) {
+                               supported[direction] = false;
+                               break;
+                       }
+               }
+       }
+
+       dai_link->dpcm_playback = supported[SNDRV_PCM_STREAM_PLAYBACK];
+       dai_link->dpcm_capture  = supported[SNDRV_PCM_STREAM_CAPTURE];
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_link_set_capabilities);
+
 void snd_soc_dai_action(struct snd_soc_dai *dai,
                        int stream, int action)
 {