Merge tag 'asoc-v3.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Last updates for the merge window

A couple more fixes plus some extensions to DPCM for use with compressed
audio from Liam which arrived just after my previous pull request.

6 files changed, 347 insertions, 26 deletions

diff --git a/include/sound/soc-dpcm.h b/include/sound/soc-dpcm.h
index 047d657c331c..2883a7a6f9f3 100644
--- a/include/sound/soc-dpcm.h
+++ b/include/sound/soc-dpcm.h
@@ -11,6 +11,7 @@
 #ifndef __LINUX_SND_SOC_DPCM_H
 #define __LINUX_SND_SOC_DPCM_H
 
+#include <linux/slab.h>
 #include <linux/list.h>
 #include <sound/pcm.h>
 
@@ -135,4 +136,25 @@ int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute);
 int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd);
 int soc_dpcm_runtime_update(struct snd_soc_card *);
 
+int dpcm_path_get(struct snd_soc_pcm_runtime *fe,
+	int stream, struct snd_soc_dapm_widget_list **list_);
+int dpcm_process_paths(struct snd_soc_pcm_runtime *fe,
+	int stream, struct snd_soc_dapm_widget_list **list, int new);
+int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream);
+int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream);
+void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream);
+void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream);
+int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream);
+int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int tream);
+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);
+
+static inline void dpcm_path_put(struct snd_soc_dapm_widget_list **list)
+{
+	kfree(*list);
+}
+
+
 #endif
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 03ce45bf8ade..9a001472b96a 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -1042,6 +1042,7 @@ struct snd_soc_pcm_runtime {
 
 	/* Dynamic PCM BE runtime data */
 	struct snd_soc_dpcm_runtime dpcm[2];
+	int fe_compr;
 
 	long pmdown_time;
 	unsigned char pop_wait:1;
diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c
index 53c9ecdd119f..5e9690c85d8f 100644
--- a/sound/soc/soc-compress.c
+++ b/sound/soc/soc-compress.c
@@ -24,6 +24,7 @@
 #include <sound/compress_driver.h>
 #include <sound/soc.h>
 #include <sound/initval.h>
+#include <sound/soc-dpcm.h>
 
 static int soc_compr_open(struct snd_compr_stream *cstream)
 {
@@ -75,6 +76,98 @@ out:
 	return ret;
 }
 
+static int soc_compr_open_fe(struct snd_compr_stream *cstream)
+{
+	struct snd_soc_pcm_runtime *fe = cstream->private_data;
+	struct snd_pcm_substream *fe_substream = fe->pcm->streams[0].substream;
+	struct snd_soc_platform *platform = fe->platform;
+	struct snd_soc_dai *cpu_dai = fe->cpu_dai;
+	struct snd_soc_dai *codec_dai = fe->codec_dai;
+	struct snd_soc_dpcm *dpcm;
+	struct snd_soc_dapm_widget_list *list;
+	int stream;
+	int ret = 0;
+
+	if (cstream->direction == SND_COMPRESS_PLAYBACK)
+		stream = SNDRV_PCM_STREAM_PLAYBACK;
+	else
+		stream = SNDRV_PCM_STREAM_CAPTURE;
+
+	mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
+
+	if (platform->driver->compr_ops && platform->driver->compr_ops->open) {
+		ret = platform->driver->compr_ops->open(cstream);
+		if (ret < 0) {
+			pr_err("compress asoc: can't open platform %s\n", platform->name);
+			goto out;
+		}
+	}
+
+	if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) {
+		ret = fe->dai_link->compr_ops->startup(cstream);
+		if (ret < 0) {
+			pr_err("compress asoc: %s startup failed\n", fe->dai_link->name);
+			goto machine_err;
+		}
+	}
+
+	fe->dpcm[stream].runtime = fe_substream->runtime;
+
+	if (dpcm_path_get(fe, stream, &list) <= 0) {
+		dev_dbg(fe->dev, "ASoC: %s no valid %s route\n",
+			fe->dai_link->name, stream ? "capture" : "playback");
+	}
+
+	/* calculate valid and active FE <-> BE dpcms */
+	dpcm_process_paths(fe, stream, &list, 1);
+
+	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
+
+	ret = dpcm_be_dai_startup(fe, stream);
+	if (ret < 0) {
+		/* clean up all links */
+		list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
+			dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
+
+		dpcm_be_disconnect(fe, stream);
+		fe->dpcm[stream].runtime = NULL;
+		goto fe_err;
+	}
+
+	dpcm_clear_pending_state(fe, stream);
+	dpcm_path_put(&list);
+
+	fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
+	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
+
+	if (cstream->direction == SND_COMPRESS_PLAYBACK) {
+		cpu_dai->playback_active++;
+		codec_dai->playback_active++;
+	} else {
+		cpu_dai->capture_active++;
+		codec_dai->capture_active++;
+	}
+
+	cpu_dai->active++;
+	codec_dai->active++;
+	fe->codec->active++;
+
+	mutex_unlock(&fe->card->mutex);
+
+	return 0;
+
+fe_err:
+	if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown)
+		fe->dai_link->compr_ops->shutdown(cstream);
+machine_err:
+	if (platform->driver->compr_ops && platform->driver->compr_ops->free)
+		platform->driver->compr_ops->free(cstream);
+out:
+	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
+	mutex_unlock(&fe->card->mutex);
+	return ret;
+}
+
 /*
  * Power down the audio subsystem pmdown_time msecs after close is called.
  * This is to ensure there are no pops or clicks in between any music tracks
@@ -164,6 +257,65 @@ static int soc_compr_free(struct snd_compr_stream *cstream)
 	return 0;
 }
 
+static int soc_compr_free_fe(struct snd_compr_stream *cstream)
+{
+	struct snd_soc_pcm_runtime *fe = cstream->private_data;
+	struct snd_soc_platform *platform = fe->platform;
+	struct snd_soc_dai *cpu_dai = fe->cpu_dai;
+	struct snd_soc_dai *codec_dai = fe->codec_dai;
+	struct snd_soc_dpcm *dpcm;
+	int stream, ret;
+
+	mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
+
+	if (cstream->direction == SND_COMPRESS_PLAYBACK) {
+		stream = SNDRV_PCM_STREAM_PLAYBACK;
+		cpu_dai->playback_active--;
+		codec_dai->playback_active--;
+	} else {
+		stream = SNDRV_PCM_STREAM_CAPTURE;
+		cpu_dai->capture_active--;
+		codec_dai->capture_active--;
+	}
+
+	cpu_dai->active--;
+	codec_dai->active--;
+	fe->codec->active--;
+
+	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
+
+	ret = dpcm_be_dai_hw_free(fe, stream);
+	if (ret < 0)
+		dev_err(fe->dev, "compressed hw_free failed %d\n", ret);
+
+	ret = dpcm_be_dai_shutdown(fe, stream);
+
+	/* mark FE's links ready to prune */
+	list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
+		dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
+
+	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
+		dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
+	else
+		dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
+
+	fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
+	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
+
+	dpcm_be_disconnect(fe, stream);
+
+	fe->dpcm[stream].runtime = NULL;
+
+	if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown)
+		fe->dai_link->compr_ops->shutdown(cstream);
+
+	if (platform->driver->compr_ops && platform->driver->compr_ops->free)
+		platform->driver->compr_ops->free(cstream);
+
+	mutex_unlock(&fe->card->mutex);
+	return 0;
+}
+
 static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd)
 {
 
@@ -194,6 +346,59 @@ out:
 	return ret;
 }
 
+static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
+{
+	struct snd_soc_pcm_runtime *fe = cstream->private_data;
+	struct snd_soc_platform *platform = fe->platform;
+	int ret = 0, stream;
+
+	if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN ||
+		cmd == SND_COMPR_TRIGGER_DRAIN) {
+
+		if (platform->driver->compr_ops &&
+			platform->driver->compr_ops->trigger)
+		return platform->driver->compr_ops->trigger(cstream, cmd);
+	}
+
+	if (cstream->direction == SND_COMPRESS_PLAYBACK)
+		stream = SNDRV_PCM_STREAM_PLAYBACK;
+	else
+		stream = SNDRV_PCM_STREAM_CAPTURE;
+
+
+	mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
+
+	if (platform->driver->compr_ops && platform->driver->compr_ops->trigger) {
+		ret = platform->driver->compr_ops->trigger(cstream, cmd);
+		if (ret < 0)
+			goto out;
+	}
+
+	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
+
+	ret = dpcm_be_dai_trigger(fe, stream, cmd);
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+		fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
+		break;
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
+		break;
+	}
+
+out:
+	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
+	mutex_unlock(&fe->card->mutex);
+	return ret;
+}
+
 static int soc_compr_set_params(struct snd_compr_stream *cstream,
 					struct snd_compr_params *params)
 {
@@ -241,6 +446,64 @@ err:
 	return ret;
 }
 
+static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
+					struct snd_compr_params *params)
+{
+	struct snd_soc_pcm_runtime *fe = cstream->private_data;
+	struct snd_pcm_substream *fe_substream = fe->pcm->streams[0].substream;
+	struct snd_soc_platform *platform = fe->platform;
+	int ret = 0, stream;
+
+	if (cstream->direction == SND_COMPRESS_PLAYBACK)
+		stream = SNDRV_PCM_STREAM_PLAYBACK;
+	else
+		stream = SNDRV_PCM_STREAM_CAPTURE;
+
+	mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
+
+	if (platform->driver->compr_ops && platform->driver->compr_ops->set_params) {
+		ret = platform->driver->compr_ops->set_params(cstream, params);
+		if (ret < 0)
+			goto out;
+	}
+
+	if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->set_params) {
+		ret = fe->dai_link->compr_ops->set_params(cstream);
+		if (ret < 0)
+			goto out;
+	}
+
+	/*
+	 * Create an empty hw_params for the BE as the machine driver must
+	 * fix this up to match DSP decoder and ASRC configuration.
+	 * I.e. machine driver fixup for compressed BE is mandatory.
+	 */
+	memset(&fe->dpcm[fe_substream->stream].hw_params, 0,
+		sizeof(struct snd_pcm_hw_params));
+
+	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
+
+	ret = dpcm_be_dai_hw_params(fe, stream);
+	if (ret < 0)
+		goto out;
+
+	ret = dpcm_be_dai_prepare(fe, stream);
+	if (ret < 0)
+		goto out;
+
+	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
+		dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
+	else
+		dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
+
+	fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
+
+out:
+	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
+	mutex_unlock(&fe->card->mutex);
+	return ret;
+}
+
 static int soc_compr_get_params(struct snd_compr_stream *cstream,
 					struct snd_codec *params)
 {
@@ -360,6 +623,7 @@ static int soc_compr_get_metadata(struct snd_compr_stream *cstream,
 
 	return ret;
 }
+
 /* ASoC Compress operations */
 static struct snd_compr_ops soc_compr_ops = {
 	.open		= soc_compr_open,
@@ -375,6 +639,21 @@ static struct snd_compr_ops soc_compr_ops = {
 	.get_codec_caps = soc_compr_get_codec_caps
 };
 
+/* ASoC Dynamic Compress operations */
+static struct snd_compr_ops soc_compr_dyn_ops = {
+	.open		= soc_compr_open_fe,
+	.free		= soc_compr_free_fe,
+	.set_params	= soc_compr_set_params_fe,
+	.get_params	= soc_compr_get_params,
+	.set_metadata   = soc_compr_set_metadata,
+	.get_metadata	= soc_compr_get_metadata,
+	.trigger	= soc_compr_trigger_fe,
+	.pointer	= soc_compr_pointer,
+	.ack		= soc_compr_ack,
+	.get_caps	= soc_compr_get_caps,
+	.get_codec_caps = soc_compr_get_codec_caps
+};
+
 /* create a new compress */
 int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
 {
@@ -383,6 +662,7 @@ int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
 	struct snd_soc_dai *codec_dai = rtd->codec_dai;
 	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 	struct snd_compr *compr;
+	struct snd_pcm *be_pcm;
 	char new_name[64];
 	int ret = 0, direction = 0;
 
@@ -410,7 +690,26 @@ int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
 		ret = -ENOMEM;
 		goto compr_err;
 	}
-	memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));
+
+	if (rtd->dai_link->dynamic) {
+		snprintf(new_name, sizeof(new_name), "(%s)",
+			rtd->dai_link->stream_name);
+
+		ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
+				1, 0, &be_pcm);
+		if (ret < 0) {
+			dev_err(rtd->card->dev, "ASoC: can't create compressed for %s\n",
+				rtd->dai_link->name);
+			goto compr_err;
+		}
+
+		rtd->pcm = be_pcm;
+		rtd->fe_compr = 1;
+		be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
+		be_pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
+		memcpy(compr->ops, &soc_compr_dyn_ops, sizeof(soc_compr_dyn_ops));
+	} else
+		memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));
 
 	/* Add copy callback for not memory mapped DSPs */
 	if (platform->driver->compr_ops && platform->driver->compr_ops->copy)
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 2a44fe9122a2..dc8ff13187f7 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -2476,7 +2476,8 @@ err:
 }
 
 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
-				  const struct snd_soc_dapm_route *route)
+				  const struct snd_soc_dapm_route *route,
+				  unsigned int is_prefixed)
 {
 	struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
 	struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
@@ -2486,7 +2487,7 @@ static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
 	char prefixed_source[80];
 	int ret;
 
-	if (dapm->codec && dapm->codec->name_prefix) {
+	if (dapm->codec && dapm->codec->name_prefix && !is_prefixed) {
 		snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
 			 dapm->codec->name_prefix, route->sink);
 		sink = prefixed_sink;
@@ -2614,7 +2615,7 @@ int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
 
 	mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
 	for (i = 0; i < num; i++) {
-		r = snd_soc_dapm_add_route(dapm, route);
+		r = snd_soc_dapm_add_route(dapm, route, false);
 		if (r < 0) {
 			dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
 				route->source,
@@ -3670,7 +3671,7 @@ void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
 				cpu_dai->codec->name, r.source,
 				codec_dai->platform->name, r.sink);
 
-			snd_soc_dapm_add_route(&card->dapm, &r);
+			snd_soc_dapm_add_route(&card->dapm, &r, true);
 		}
 
 		/* connect BE DAI capture if widgets are valid */
@@ -3681,7 +3682,7 @@ void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
 				codec_dai->codec->name, r.source,
 				cpu_dai->platform->name, r.sink);
 
-			snd_soc_dapm_add_route(&card->dapm, &r);
+			snd_soc_dapm_add_route(&card->dapm, &r, true);
 		}
 
 	}
diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c
index 560a7787d8a7..5bace124ef43 100644
--- a/sound/soc/soc-generic-dmaengine-pcm.c
+++ b/sound/soc/soc-generic-dmaengine-pcm.c
@@ -176,17 +176,20 @@ static struct dma_chan *dmaengine_pcm_compat_request_channel(
 {
 	struct dmaengine_pcm *pcm = soc_platform_to_pcm(rtd->platform);
 	struct snd_dmaengine_dai_dma_data *dma_data;
+	dma_filter_fn fn = NULL;
 
 	dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
 
 	if ((pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX) && pcm->chan[0])
 		return pcm->chan[0];
 
-	if (pcm->config->compat_request_channel)
+	if (pcm->config && pcm->config->compat_request_channel)
 		return pcm->config->compat_request_channel(rtd, substream);
 
-	return snd_dmaengine_pcm_request_channel(pcm->config->compat_filter_fn,
-						 dma_data->filter_data);
+	if (pcm->config)
+		fn = pcm->config->compat_filter_fn;
+
+	return snd_dmaengine_pcm_request_channel(fn, dma_data->filter_data);
 }
 
 static bool dmaengine_pcm_can_report_residue(struct dma_chan *chan)
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 5932971cf54d..47e1ce771e65 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -58,7 +58,7 @@ int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
 
 /* DPCM stream event, send event to FE and all active BEs. */
-static int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir,
+int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir,
 	int event)
 {
 	struct snd_soc_dpcm *dpcm;
@@ -885,7 +885,7 @@ static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe,
 }
 
 /* disconnect a BE and FE */
-static void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream)
+void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream)
 {
 	struct snd_soc_dpcm *dpcm, *d;
 
@@ -981,7 +981,7 @@ static int widget_in_list(struct snd_soc_dapm_widget_list *list,
 	return 0;
 }
 
-static int dpcm_path_get(struct snd_soc_pcm_runtime *fe,
+int dpcm_path_get(struct snd_soc_pcm_runtime *fe,
 	int stream, struct snd_soc_dapm_widget_list **list_)
 {
 	struct snd_soc_dai *cpu_dai = fe->cpu_dai;
@@ -1003,11 +1003,6 @@ static int dpcm_path_get(struct snd_soc_pcm_runtime *fe,
 	return paths;
 }
 
-static inline void dpcm_path_put(struct snd_soc_dapm_widget_list **list)
-{
-	kfree(*list);
-}
-
 static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream,
 	struct snd_soc_dapm_widget_list **list_)
 {
@@ -1077,7 +1072,7 @@ static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream,
 			continue;
 
 		/* don't connect if FE is not running */
-		if (!fe->dpcm[stream].runtime)
+		if (!fe->dpcm[stream].runtime && !fe->fe_compr)
 			continue;
 
 		/* newly connected FE and BE */
@@ -1102,7 +1097,7 @@ static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream,
  * Find the corresponding BE DAIs that source or sink audio to this
  * FE substream.
  */
-static int dpcm_process_paths(struct snd_soc_pcm_runtime *fe,
+int dpcm_process_paths(struct snd_soc_pcm_runtime *fe,
 	int stream, struct snd_soc_dapm_widget_list **list, int new)
 {
 	if (new)
@@ -1111,7 +1106,7 @@ static int dpcm_process_paths(struct snd_soc_pcm_runtime *fe,
 		return dpcm_prune_paths(fe, stream, list);
 }
 
-static void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream)
+void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream)
 {
 	struct snd_soc_dpcm *dpcm;
 
@@ -1149,7 +1144,7 @@ static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe,
 	}
 }
 
-static int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream)
+int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream)
 {
 	struct snd_soc_dpcm *dpcm;
 	int err, count = 0;
@@ -1301,7 +1296,7 @@ be_err:
 	return ret;
 }
 
-static int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
+int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
 {
 	struct snd_soc_dpcm *dpcm;
 
@@ -1362,7 +1357,7 @@ static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream)
 	return 0;
 }
 
-static int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream)
+int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream)
 {
 	struct snd_soc_dpcm *dpcm;
 
@@ -1427,7 +1422,7 @@ static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream)
 	return 0;
 }
 
-static int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream)
+int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream)
 {
 	struct snd_soc_dpcm *dpcm;
 	int ret;
@@ -1557,7 +1552,7 @@ static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm,
 	return ret;
 }
 
-static int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream,
+int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream,
 			       int cmd)
 {
 	struct snd_soc_dpcm *dpcm;
@@ -1725,7 +1720,7 @@ out:
 	return ret;
 }
 
-static int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream)
+int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream)
 {
 	struct snd_soc_dpcm *dpcm;
 	int ret = 0;