AsoC: dapm: export a couple of functions

Export a couple of DAPM functions that can be used by
ASoC drivers to determine connected widgets when a PCM
is started.

Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20210927120517.20505-6-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: ranj063

include/sound/soc-dpcm.h

@@ -159,6 +159,7 @@ int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, int cmd);
 int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream);
 int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir,
 	int event);
+bool dpcm_end_walk_at_be(struct snd_soc_dapm_widget *widget, enum snd_soc_dapm_direction dir);
 
 #define dpcm_be_dai_startup_rollback(fe, stream, last)	\
 						dpcm_be_dai_stop(fe, stream, 0, last)

sound/soc/soc-dapm.c

@@ -1331,11 +1331,13 @@ int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
 
 	return paths;
 }
+EXPORT_SYMBOL_GPL(snd_soc_dapm_dai_get_connected_widgets);
 
 void snd_soc_dapm_dai_free_widgets(struct snd_soc_dapm_widget_list **list)
 {
 	dapm_widget_list_free(list);
 }
+EXPORT_SYMBOL_GPL(snd_soc_dapm_dai_free_widgets);
 
 /*
  * Handler for regulator supply widget.

sound/soc/soc-pcm.c

@@ -1262,8 +1262,7 @@ static int widget_in_list(struct snd_soc_dapm_widget_list *list,
 	return 0;
 }
 
-static bool dpcm_end_walk_at_be(struct snd_soc_dapm_widget *widget,
-		enum snd_soc_dapm_direction dir)
+bool dpcm_end_walk_at_be(struct snd_soc_dapm_widget *widget, enum snd_soc_dapm_direction dir)
 {
 	struct snd_soc_card *card = widget->dapm->card;
 	struct snd_soc_pcm_runtime *rtd;
@@ -1281,6 +1280,7 @@ static bool dpcm_end_walk_at_be(struct snd_soc_dapm_widget *widget,
 
 	return false;
 }
+EXPORT_SYMBOL_GPL(dpcm_end_walk_at_be);
 
 int dpcm_path_get(struct snd_soc_pcm_runtime *fe,
 	int stream, struct snd_soc_dapm_widget_list **list)