ASoC: soc-pcm: care trigger rollback

soc_pcm_trigger() calls DAI/Component/Link trigger,
but some of them might be failed.

	static int soc_pcm_trigger(...)
	{
		...
		switch (cmd) {
		case SNDRV_PCM_TRIGGER_START:
		case SNDRV_PCM_TRIGGER_RESUME:
		case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
			ret = snd_soc_link_trigger(substream, cmd);
			if (ret < 0)
				break;

(*)			ret = snd_soc_pcm_component_trigger(substream, cmd);
			if (ret < 0)
				break;

			ret = snd_soc_pcm_dai_trigger(substream, cmd);
			break;
		case SNDRV_PCM_TRIGGER_STOP:
		case SNDRV_PCM_TRIGGER_SUSPEND:
		case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
			ret = snd_soc_pcm_dai_trigger(substream, cmd);
			if (ret < 0)
				break;

			ret = snd_soc_pcm_component_trigger(substream, cmd);
			if (ret < 0)
				break;

			ret = snd_soc_link_trigger(substream, cmd);
			break;
		}
		...
	}

For example, if soc_pcm_trigger() failed at (*) point,
we need to rollback previous succeeded trigger.

This patch adds trigger mark for DAI/Component/Link,
and do STOP if START/RESUME/PAUSE_RELEASE were failed.

Because it need to use new rollback parameter,
we need to modify DAI/Component/Link trigger functions in the same time.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87a6uycssd.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc-component.h

@@ -221,6 +221,7 @@ struct snd_soc_component {
 	struct snd_pcm_substream *mark_module;
 	struct snd_pcm_substream *mark_open;
 	struct snd_pcm_substream *mark_hw_params;
+	struct snd_pcm_substream *mark_trigger;
 	struct snd_compr_stream  *mark_compr_open;
 	void *mark_pm;
 
@@ -486,7 +487,7 @@ int snd_soc_pcm_component_hw_params(struct snd_pcm_substream *substream,
 void snd_soc_pcm_component_hw_free(struct snd_pcm_substream *substream,
 				   int rollback);
 int snd_soc_pcm_component_trigger(struct snd_pcm_substream *substream,
-				  int cmd);
+				  int cmd, int rollback);
 int snd_soc_pcm_component_pm_runtime_get(struct snd_soc_pcm_runtime *rtd,
 					 void *stream);
 void snd_soc_pcm_component_pm_runtime_put(struct snd_soc_pcm_runtime *rtd,

include/sound/soc-dai.h

@@ -189,7 +189,8 @@ int snd_soc_pcm_dai_probe(struct snd_soc_pcm_runtime *rtd, int order);
 int snd_soc_pcm_dai_remove(struct snd_soc_pcm_runtime *rtd, int order);
 int snd_soc_pcm_dai_new(struct snd_soc_pcm_runtime *rtd);
 int snd_soc_pcm_dai_prepare(struct snd_pcm_substream *substream);
-int snd_soc_pcm_dai_trigger(struct snd_pcm_substream *substream, int cmd);
+int snd_soc_pcm_dai_trigger(struct snd_pcm_substream *substream, int cmd,
+			    int rollback);
 int snd_soc_pcm_dai_bespoke_trigger(struct snd_pcm_substream *substream,
 				    int cmd);
 
@@ -401,6 +402,7 @@ struct snd_soc_dai {
 	/* function mark */
 	struct snd_pcm_substream *mark_startup;
 	struct snd_pcm_substream *mark_hw_params;
+	struct snd_pcm_substream *mark_trigger;
 	struct snd_compr_stream  *mark_compr_startup;
 
 	/* bit field */

include/sound/soc-link.h

@@ -21,8 +21,9 @@ int snd_soc_link_hw_params(struct snd_pcm_substream *substream,
 			   struct snd_pcm_hw_params *params);
 void snd_soc_link_hw_free(struct snd_pcm_substream *substream,
 			  int rollback);
-int snd_soc_link_trigger(struct snd_pcm_substream *substream, int cmd);
 
+int snd_soc_link_trigger(struct snd_pcm_substream *substream, int cmd,
+			 int rollback);
 int snd_soc_link_compr_startup(struct snd_compr_stream *cstream);
 void snd_soc_link_compr_shutdown(struct snd_compr_stream *cstream,
 				 int rollback);

include/sound/soc.h

@@ -1042,6 +1042,7 @@ struct snd_soc_pcm_runtime {
 	/* function mark */
 	struct snd_pcm_substream *mark_startup;
 	struct snd_pcm_substream *mark_hw_params;
+	struct snd_pcm_substream *mark_trigger;
 	struct snd_compr_stream  *mark_compr_startup;
 
 	/* bit field */

sound/soc/soc-component.c

@@ -1075,22 +1075,51 @@ void snd_soc_pcm_component_hw_free(struct snd_pcm_substream *substream,
 	}
 }
 
+static int soc_component_trigger(struct snd_soc_component *component,
+				 struct snd_pcm_substream *substream,
+				 int cmd)
+{
+	int ret = 0;
+
+	if (component->driver->trigger)
+		ret = component->driver->trigger(component, substream, cmd);
+
+	return soc_component_ret(component, ret);
+}
+
 int snd_soc_pcm_component_trigger(struct snd_pcm_substream *substream,
-				  int cmd)
+				  int cmd, int rollback)
 {
 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	struct snd_soc_component *component;
-	int i, ret;
+	int i, r, ret = 0;
 
-	for_each_rtd_components(rtd, i, component) {
+	switch (cmd) {
-		if (component->driver->trigger) {
+	case SNDRV_PCM_TRIGGER_START:
-			ret = component->driver->trigger(component, substream, cmd);
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		for_each_rtd_components(rtd, i, component) {
+			ret = soc_component_trigger(component, substream, cmd);
 			if (ret < 0)
-				return soc_component_ret(component, ret);
+				break;
+			soc_component_mark_push(component, substream, trigger);
+		}
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		for_each_rtd_components(rtd, i, component) {
+			if (rollback && !soc_component_mark_match(component, substream, trigger))
+				continue;
+
+			r = soc_component_trigger(component, substream, cmd);
+			if (r < 0)
+				ret = r; /* use last ret */
+			soc_component_mark_pop(component, substream, trigger);
 		}
 	}
 
-	return 0;
+	return ret;
 }
 
 int snd_soc_pcm_component_pm_runtime_get(struct snd_soc_pcm_runtime *rtd,

sound/soc/soc-dai.c

@@ -564,23 +564,51 @@ int snd_soc_pcm_dai_prepare(struct snd_pcm_substream *substream)
 	return 0;
 }
 
+static int soc_dai_trigger(struct snd_soc_dai *dai,
+			   struct snd_pcm_substream *substream, int cmd)
+{
+	int ret = 0;
+
+	if (dai->driver->ops &&
+	    dai->driver->ops->trigger)
+		ret = dai->driver->ops->trigger(substream, cmd, dai);
+
+	return soc_dai_ret(dai, ret);
+}
+
 int snd_soc_pcm_dai_trigger(struct snd_pcm_substream *substream,
-			    int cmd)
+			    int cmd, int rollback)
 {
 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	struct snd_soc_dai *dai;
-	int i, ret;
+	int i, r, ret = 0;
 
-	for_each_rtd_dais(rtd, i, dai) {
+	switch (cmd) {
-		if (dai->driver->ops &&
+	case SNDRV_PCM_TRIGGER_START:
-		    dai->driver->ops->trigger) {
+	case SNDRV_PCM_TRIGGER_RESUME:
-			ret = dai->driver->ops->trigger(substream, cmd, dai);
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		for_each_rtd_dais(rtd, i, dai) {
+			ret = soc_dai_trigger(dai, substream, cmd);
 			if (ret < 0)
-				return soc_dai_ret(dai, ret);
+				break;
+			soc_dai_mark_push(dai, substream, trigger);
+		}
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		for_each_rtd_dais(rtd, i, dai) {
+			if (rollback && !soc_dai_mark_match(dai, substream, trigger))
+				continue;
+
+			r = soc_dai_trigger(dai, substream, cmd);
+			if (r < 0)
+				ret = r; /* use last ret */
+			soc_dai_mark_pop(dai, substream, trigger);
 		}
 	}
 
-	return 0;
+	return ret;
 }
 
 int snd_soc_pcm_dai_bespoke_trigger(struct snd_pcm_substream *substream,

sound/soc/soc-link.c

@@ -141,7 +141,7 @@ void snd_soc_link_hw_free(struct snd_pcm_substream *substream, int rollback)
 	soc_link_mark_pop(rtd, substream, hw_params);
 }
 
-int snd_soc_link_trigger(struct snd_pcm_substream *substream, int cmd)
+static int soc_link_trigger(struct snd_pcm_substream *substream, int cmd)
 {
 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	int ret = 0;
@@ -153,6 +153,34 @@ int snd_soc_link_trigger(struct snd_pcm_substream *substream, int cmd)
 	return soc_link_ret(rtd, ret);
 }
 
+int snd_soc_link_trigger(struct snd_pcm_substream *substream, int cmd,
+			 int rollback)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	int ret = 0;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		ret = soc_link_trigger(substream, cmd);
+		if (ret < 0)
+			break;
+		soc_link_mark_push(rtd, substream, trigger);
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		if (rollback && !soc_link_mark_match(rtd, substream, trigger))
+			break;
+
+		ret = soc_link_trigger(substream, cmd);
+		soc_link_mark_pop(rtd, substream, startup);
+	}
+
+	return ret;
+}
+
 int snd_soc_link_compr_startup(struct snd_compr_stream *cstream)
 {
 	struct snd_soc_pcm_runtime *rtd = cstream->private_data;

sound/soc/soc-pcm.c

@@ -1012,37 +1012,61 @@ out:
 
 static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 {
-	int ret = -EINVAL;
+	int ret = -EINVAL, _ret = 0;
+	int rollback = 0;
 
 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_START:
 	case SNDRV_PCM_TRIGGER_RESUME:
 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
-		ret = snd_soc_link_trigger(substream, cmd);
+		ret = snd_soc_link_trigger(substream, cmd, 0);
 		if (ret < 0)
-			break;
+			goto start_err;
 
-		ret = snd_soc_pcm_component_trigger(substream, cmd);
+		ret = snd_soc_pcm_component_trigger(substream, cmd, 0);
 		if (ret < 0)
-			break;
+			goto start_err;
 
-		ret = snd_soc_pcm_dai_trigger(substream, cmd);
+		ret = snd_soc_pcm_dai_trigger(substream, cmd, 0);
-		break;
+start_err:
+		if (ret < 0)
+			rollback = 1;
+	}
+
+	if (rollback) {
+		_ret = ret;
+		switch (cmd) {
+		case SNDRV_PCM_TRIGGER_START:
+			cmd = SNDRV_PCM_TRIGGER_STOP;
+			break;
+		case SNDRV_PCM_TRIGGER_RESUME:
+			cmd = SNDRV_PCM_TRIGGER_SUSPEND;
+			break;
+		case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+			cmd = SNDRV_PCM_TRIGGER_PAUSE_PUSH;
+			break;
+		}
+	}
+
+	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_STOP:
 	case SNDRV_PCM_TRIGGER_SUSPEND:
 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-		ret = snd_soc_pcm_dai_trigger(substream, cmd);
+		ret = snd_soc_pcm_dai_trigger(substream, cmd, rollback);
 		if (ret < 0)
 			break;
 
-		ret = snd_soc_pcm_component_trigger(substream, cmd);
+		ret = snd_soc_pcm_component_trigger(substream, cmd, rollback);
 		if (ret < 0)
 			break;
 
-		ret = snd_soc_link_trigger(substream, cmd);
+		ret = snd_soc_link_trigger(substream, cmd, rollback);
 		break;
 	}
 
+	if (_ret)
+		ret = _ret;
+
 	return ret;
 }