ASoC: dapm: Supply the DAI and substream when calling stream events

In order to allow us to do something smarter than iterate through widgets
doing strcmp() to work out what to power up for stream events change the
interface used to generate them to be based on the combination of a DAI
and a stream direction rather than just a simple string identifying the
stream.

At some point we'll probably want a set of channels too.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>

1 files changed, 16 insertions, 9 deletions

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 295fa91d9d03..97915eb711cc 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -2823,17 +2823,27 @@ int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
 
 static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm,
-        const char *stream, int event)
+                                  int stream, struct snd_soc_dai *dai,
+                                  int event)
 {
         struct snd_soc_dapm_widget *w;
+        const char *stream_name;
+
+        if (stream == SNDRV_PCM_STREAM_PLAYBACK)
+                stream_name = dai->driver->playback.stream_name;
+        else
+                stream_name = dai->driver->capture.stream_name;
+
+        if (!stream_name)
+                return;
 
         list_for_each_entry(w, &dapm->card->widgets, list)
         {
                 if (!w->sname || w->dapm != dapm)
                         continue;
                 dev_vdbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n",
-                        w->name, w->sname, stream, event);
-                if (strstr(w->sname, stream)) {
+                        w->name, w->sname, stream_name, event);
+                if (strstr(w->sname, stream_name)) {
                         dapm_mark_dirty(w, "stream event");
                         switch(event) {
                         case SND_SOC_DAPM_STREAM_START:
@@ -2865,16 +2875,13 @@ static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm,
  *
  * Returns 0 for success else error.
  */
-int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd,
-        const char *stream, int event)
+int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
+                              struct snd_soc_dai *dai, int event)
 {
         struct snd_soc_codec *codec = rtd->codec;
 
-        if (stream == NULL)
-                return 0;
-
         mutex_lock(&codec->mutex);
-        soc_dapm_stream_event(&codec->dapm, stream, event);
+        soc_dapm_stream_event(&codec->dapm, stream, dai, event);
         mutex_unlock(&codec->mutex);
         return 0;
 }