Merge tag 'asoc-v6.3' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next

ASoC: Updates for v6.3

There's been quite a lot of activity this release, but not really
one big feature - lots of new devices, plus a lot of cleanup and
modernisation work spread throughout the subsystem:

 - More factoring out of common operations into helper functions
   by Morimoto-san.
 - DT schema conversons and stylistic nits.
 - Continued work on building out the new SOF IPC4 scheme.
 - Support for Awinc AT88395, Infineon PEB2466, Iron Device
   SMA1303, Mediatek MT8188, Realtek RT712, Renesas IDT821034,
   Samsung/Tesla FSD SoC I2S, and TI TAS5720A-Q1.

1 files changed, 75 insertions, 112 deletions

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index a79a2fb260b8..07421f5d4ebd 100644
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -44,9 +44,8 @@
 #define SOC_TPLG_PASS_WIDGET		3
 #define SOC_TPLG_PASS_PCM_DAI		4
 #define SOC_TPLG_PASS_GRAPH		5
-#define SOC_TPLG_PASS_PINS		6
-#define SOC_TPLG_PASS_BE_DAI		7
-#define SOC_TPLG_PASS_LINK		8
+#define SOC_TPLG_PASS_BE_DAI		6
+#define SOC_TPLG_PASS_LINK		7
 
 #define SOC_TPLG_PASS_START	SOC_TPLG_PASS_MANIFEST
 #define SOC_TPLG_PASS_END	SOC_TPLG_PASS_LINK
@@ -77,9 +76,6 @@ struct soc_tplg {
 	struct snd_soc_tplg_ops *ops;
 };
 
-static int soc_tplg_process_headers(struct soc_tplg *tplg);
-static int soc_tplg_complete(struct soc_tplg *tplg);
-
 /* check we dont overflow the data for this control chunk */
 static int soc_tplg_check_elem_count(struct soc_tplg *tplg, size_t elem_size,
 	unsigned int count, size_t bytes, const char *elem_type)
@@ -186,7 +182,7 @@ static const struct soc_tplg_map dapm_map[] = {
 	{SND_SOC_TPLG_DAPM_DECODER, snd_soc_dapm_decoder},
 };
 
-static int tplc_chan_get_reg(struct soc_tplg *tplg,
+static int tplg_chan_get_reg(struct soc_tplg *tplg,
 	struct snd_soc_tplg_channel *chan, int map)
 {
 	int i;
@@ -199,7 +195,7 @@ static int tplc_chan_get_reg(struct soc_tplg *tplg,
 	return -EINVAL;
 }
 
-static int tplc_chan_get_shift(struct soc_tplg *tplg,
+static int tplg_chan_get_shift(struct soc_tplg *tplg,
 	struct snd_soc_tplg_channel *chan, int map)
 {
 	int i;
@@ -354,69 +350,37 @@ static int soc_tplg_add_kcontrol(struct soc_tplg *tplg,
 				tplg->dev, k, comp->name_prefix, comp, kcontrol);
 }
 
-/* remove a mixer kcontrol */
-static void remove_mixer(struct snd_soc_component *comp,
-	struct snd_soc_dobj *dobj, int pass)
-{
-	struct snd_card *card = comp->card->snd_card;
-
-	if (pass != SOC_TPLG_PASS_CONTROL)
-		return;
-
-	if (dobj->ops && dobj->ops->control_unload)
-		dobj->ops->control_unload(comp, dobj);
-
-	snd_ctl_remove(card, dobj->control.kcontrol);
-	list_del(&dobj->list);
-}
-
-/* remove an enum kcontrol */
-static void remove_enum(struct snd_soc_component *comp,
-	struct snd_soc_dobj *dobj, int pass)
-{
-	struct snd_card *card = comp->card->snd_card;
-
-	if (pass != SOC_TPLG_PASS_CONTROL)
-		return;
-
-	if (dobj->ops && dobj->ops->control_unload)
-		dobj->ops->control_unload(comp, dobj);
-
-	snd_ctl_remove(card, dobj->control.kcontrol);
-	list_del(&dobj->list);
-}
-
-/* remove a byte kcontrol */
-static void remove_bytes(struct snd_soc_component *comp,
-	struct snd_soc_dobj *dobj, int pass)
+/* remove kcontrol */
+static void soc_tplg_remove_kcontrol(struct snd_soc_component *comp, struct snd_soc_dobj *dobj,
+				     int pass)
 {
 	struct snd_card *card = comp->card->snd_card;
 
 	if (pass != SOC_TPLG_PASS_CONTROL)
 		return;
 
-	if (dobj->ops && dobj->ops->control_unload)
-		dobj->ops->control_unload(comp, dobj);
+	if (dobj->unload)
+		dobj->unload(comp, dobj);
 
 	snd_ctl_remove(card, dobj->control.kcontrol);
 	list_del(&dobj->list);
 }
 
 /* remove a route */
-static void remove_route(struct snd_soc_component *comp,
+static void soc_tplg_remove_route(struct snd_soc_component *comp,
 			 struct snd_soc_dobj *dobj, int pass)
 {
 	if (pass != SOC_TPLG_PASS_GRAPH)
 		return;
 
-	if (dobj->ops && dobj->ops->dapm_route_unload)
-		dobj->ops->dapm_route_unload(comp, dobj);
+	if (dobj->unload)
+		dobj->unload(comp, dobj);
 
 	list_del(&dobj->list);
 }
 
 /* remove a widget and it's kcontrols - routes must be removed first */
-static void remove_widget(struct snd_soc_component *comp,
+static void soc_tplg_remove_widget(struct snd_soc_component *comp,
 	struct snd_soc_dobj *dobj, int pass)
 {
 	struct snd_card *card = comp->card->snd_card;
@@ -427,8 +391,8 @@ static void remove_widget(struct snd_soc_component *comp,
 	if (pass != SOC_TPLG_PASS_WIDGET)
 		return;
 
-	if (dobj->ops && dobj->ops->widget_unload)
-		dobj->ops->widget_unload(comp, dobj);
+	if (dobj->unload)
+		dobj->unload(comp, dobj);
 
 	if (!w->kcontrols)
 		goto free_news;
@@ -444,7 +408,7 @@ free_news:
 }
 
 /* remove DAI configurations */
-static void remove_dai(struct snd_soc_component *comp,
+static void soc_tplg_remove_dai(struct snd_soc_component *comp,
 	struct snd_soc_dobj *dobj, int pass)
 {
 	struct snd_soc_dai_driver *dai_drv =
@@ -454,8 +418,8 @@ static void remove_dai(struct snd_soc_component *comp,
 	if (pass != SOC_TPLG_PASS_PCM_DAI)
 		return;
 
-	if (dobj->ops && dobj->ops->dai_unload)
-		dobj->ops->dai_unload(comp, dobj);
+	if (dobj->unload)
+		dobj->unload(comp, dobj);
 
 	for_each_component_dais_safe(comp, dai, _dai)
 		if (dai->driver == dai_drv)
@@ -465,7 +429,7 @@ static void remove_dai(struct snd_soc_component *comp,
 }
 
 /* remove link configurations */
-static void remove_link(struct snd_soc_component *comp,
+static void soc_tplg_remove_link(struct snd_soc_component *comp,
 	struct snd_soc_dobj *dobj, int pass)
 {
 	struct snd_soc_dai_link *link =
@@ -474,8 +438,8 @@ static void remove_link(struct snd_soc_component *comp,
 	if (pass != SOC_TPLG_PASS_PCM_DAI)
 		return;
 
-	if (dobj->ops && dobj->ops->link_unload)
-		dobj->ops->link_unload(comp, dobj);
+	if (dobj->unload)
+		dobj->unload(comp, dobj);
 
 	list_del(&dobj->list);
 	snd_soc_remove_pcm_runtime(comp->card,
@@ -489,11 +453,11 @@ static void remove_backend_link(struct snd_soc_component *comp,
 	if (pass != SOC_TPLG_PASS_LINK)
 		return;
 
-	if (dobj->ops && dobj->ops->link_unload)
-		dobj->ops->link_unload(comp, dobj);
+	if (dobj->unload)
+		dobj->unload(comp, dobj);
 
 	/*
-	 * We don't free the link here as what remove_link() do since BE
+	 * We don't free the link here as what soc_tplg_remove_link() do since BE
 	 * links are not allocated by topology.
 	 * We however need to reset the dobj type to its initial values
 	 */
@@ -714,7 +678,8 @@ static int soc_tplg_dbytes_create(struct soc_tplg *tplg, size_t size)
 
 	sbe->max = le32_to_cpu(be->max);
 	sbe->dobj.type = SND_SOC_DOBJ_BYTES;
-	sbe->dobj.ops = tplg->ops;
+	if (tplg->ops)
+		sbe->dobj.unload = tplg->ops->control_unload;
 	INIT_LIST_HEAD(&sbe->dobj.list);
 
 	/* map io handlers */
@@ -725,7 +690,7 @@ static int soc_tplg_dbytes_create(struct soc_tplg *tplg, size_t size)
 	}
 
 	/* pass control to driver for optional further init */
-	ret = soc_tplg_control_load(tplg, &kc, (struct snd_soc_tplg_ctl_hdr *)be);
+	ret = soc_tplg_control_load(tplg, &kc, &be->hdr);
 	if (ret < 0) {
 		dev_err(tplg->dev, "ASoC: failed to init %s\n", be->hdr.name);
 		goto err;
@@ -780,18 +745,19 @@ static int soc_tplg_dmixer_create(struct soc_tplg *tplg, size_t size)
 	kc.access = le32_to_cpu(mc->hdr.access);
 
 	/* we only support FL/FR channel mapping atm */
-	sm->reg = tplc_chan_get_reg(tplg, mc->channel, SNDRV_CHMAP_FL);
-	sm->rreg = tplc_chan_get_reg(tplg, mc->channel, SNDRV_CHMAP_FR);
-	sm->shift = tplc_chan_get_shift(tplg, mc->channel, SNDRV_CHMAP_FL);
-	sm->rshift = tplc_chan_get_shift(tplg, mc->channel, SNDRV_CHMAP_FR);
+	sm->reg = tplg_chan_get_reg(tplg, mc->channel, SNDRV_CHMAP_FL);
+	sm->rreg = tplg_chan_get_reg(tplg, mc->channel, SNDRV_CHMAP_FR);
+	sm->shift = tplg_chan_get_shift(tplg, mc->channel, SNDRV_CHMAP_FL);
+	sm->rshift = tplg_chan_get_shift(tplg, mc->channel, SNDRV_CHMAP_FR);
 
 	sm->max = le32_to_cpu(mc->max);
 	sm->min = le32_to_cpu(mc->min);
 	sm->invert = le32_to_cpu(mc->invert);
 	sm->platform_max = le32_to_cpu(mc->platform_max);
 	sm->dobj.index = tplg->index;
-	sm->dobj.ops = tplg->ops;
 	sm->dobj.type = SND_SOC_DOBJ_MIXER;
+	if (tplg->ops)
+		sm->dobj.unload = tplg->ops->control_unload;
 	INIT_LIST_HEAD(&sm->dobj.list);
 
 	/* map io handlers */
@@ -809,7 +775,7 @@ static int soc_tplg_dmixer_create(struct soc_tplg *tplg, size_t size)
 	}
 
 	/* pass control to driver for optional further init */
-	ret = soc_tplg_control_load(tplg, &kc, (struct snd_soc_tplg_ctl_hdr *)mc);
+	ret = soc_tplg_control_load(tplg, &kc, &mc->hdr);
 	if (ret < 0) {
 		dev_err(tplg->dev, "ASoC: failed to init %s\n", mc->hdr.name);
 		goto err;
@@ -927,16 +893,17 @@ static int soc_tplg_denum_create(struct soc_tplg *tplg, size_t size)
 	kc.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 	kc.access = le32_to_cpu(ec->hdr.access);
 
-	se->reg = tplc_chan_get_reg(tplg, ec->channel, SNDRV_CHMAP_FL);
-	se->shift_l = tplc_chan_get_shift(tplg, ec->channel,
+	se->reg = tplg_chan_get_reg(tplg, ec->channel, SNDRV_CHMAP_FL);
+	se->shift_l = tplg_chan_get_shift(tplg, ec->channel,
 		SNDRV_CHMAP_FL);
-	se->shift_r = tplc_chan_get_shift(tplg, ec->channel,
+	se->shift_r = tplg_chan_get_shift(tplg, ec->channel,
 		SNDRV_CHMAP_FL);
 
 	se->mask = le32_to_cpu(ec->mask);
 	se->dobj.index = tplg->index;
 	se->dobj.type = SND_SOC_DOBJ_ENUM;
-	se->dobj.ops = tplg->ops;
+	if (tplg->ops)
+		se->dobj.unload = tplg->ops->control_unload;
 	INIT_LIST_HEAD(&se->dobj.list);
 
 	switch (le32_to_cpu(ec->hdr.ops.info)) {
@@ -977,7 +944,7 @@ static int soc_tplg_denum_create(struct soc_tplg *tplg, size_t size)
 	}
 
 	/* pass control to driver for optional further init */
-	ret = soc_tplg_control_load(tplg, &kc, (struct snd_soc_tplg_ctl_hdr *)ec);
+	ret = soc_tplg_control_load(tplg, &kc, &ec->hdr);
 	if (ret < 0) {
 		dev_err(tplg->dev, "ASoC: failed to init %s\n", ec->hdr.name);
 		goto err;
@@ -1113,7 +1080,8 @@ static int soc_tplg_dapm_graph_elems_load(struct soc_tplg *tplg,
 
 		/* add route dobj to dobj_list */
 		route->dobj.type = SND_SOC_DOBJ_GRAPH;
-		route->dobj.ops = tplg->ops;
+		if (tplg->ops)
+			route->dobj.unload = tplg->ops->dapm_route_unload;
 		route->dobj.index = tplg->index;
 		list_add(&route->dobj.list, &tplg->comp->dobj_list);
 
@@ -1161,13 +1129,13 @@ static int soc_tplg_dapm_widget_dmixer_create(struct soc_tplg *tplg, struct snd_
 	kc->access = le32_to_cpu(mc->hdr.access);
 
 	/* we only support FL/FR channel mapping atm */
-	sm->reg = tplc_chan_get_reg(tplg, mc->channel,
+	sm->reg = tplg_chan_get_reg(tplg, mc->channel,
 				    SNDRV_CHMAP_FL);
-	sm->rreg = tplc_chan_get_reg(tplg, mc->channel,
+	sm->rreg = tplg_chan_get_reg(tplg, mc->channel,
 				     SNDRV_CHMAP_FR);
-	sm->shift = tplc_chan_get_shift(tplg, mc->channel,
+	sm->shift = tplg_chan_get_shift(tplg, mc->channel,
 					SNDRV_CHMAP_FL);
-	sm->rshift = tplc_chan_get_shift(tplg, mc->channel,
+	sm->rshift = tplg_chan_get_shift(tplg, mc->channel,
 					 SNDRV_CHMAP_FR);
 
 	sm->max = le32_to_cpu(mc->max);
@@ -1193,7 +1161,7 @@ static int soc_tplg_dapm_widget_dmixer_create(struct soc_tplg *tplg, struct snd_
 	}
 
 	/* pass control to driver for optional further init */
-	err = soc_tplg_control_load(tplg, kc, (struct snd_soc_tplg_ctl_hdr *)mc);
+	err = soc_tplg_control_load(tplg, kc, &mc->hdr);
 	if (err < 0) {
 		dev_err(tplg->dev, "ASoC: failed to init %s\n",
 			mc->hdr.name);
@@ -1233,10 +1201,10 @@ static int soc_tplg_dapm_widget_denum_create(struct soc_tplg *tplg, struct snd_k
 	kc->access = le32_to_cpu(ec->hdr.access);
 
 	/* we only support FL/FR channel mapping atm */
-	se->reg = tplc_chan_get_reg(tplg, ec->channel, SNDRV_CHMAP_FL);
-	se->shift_l = tplc_chan_get_shift(tplg, ec->channel,
+	se->reg = tplg_chan_get_reg(tplg, ec->channel, SNDRV_CHMAP_FL);
+	se->shift_l = tplg_chan_get_shift(tplg, ec->channel,
 					  SNDRV_CHMAP_FL);
-	se->shift_r = tplc_chan_get_shift(tplg, ec->channel,
+	se->shift_r = tplg_chan_get_shift(tplg, ec->channel,
 					  SNDRV_CHMAP_FR);
 
 	se->items = le32_to_cpu(ec->items);
@@ -1277,7 +1245,7 @@ static int soc_tplg_dapm_widget_denum_create(struct soc_tplg *tplg, struct snd_k
 	}
 
 	/* pass control to driver for optional further init */
-	err = soc_tplg_control_load(tplg, kc, (struct snd_soc_tplg_ctl_hdr *)ec);
+	err = soc_tplg_control_load(tplg, kc, &ec->hdr);
 	if (err < 0) {
 		dev_err(tplg->dev, "ASoC: failed to init %s\n",
 			ec->hdr.name);
@@ -1329,7 +1297,7 @@ static int soc_tplg_dapm_widget_dbytes_create(struct soc_tplg *tplg, struct snd_
 	}
 
 	/* pass control to driver for optional further init */
-	err = soc_tplg_control_load(tplg, kc, (struct snd_soc_tplg_ctl_hdr *)be);
+	err = soc_tplg_control_load(tplg, kc, &be->hdr);
 	if (err < 0) {
 		dev_err(tplg->dev, "ASoC: failed to init %s\n",
 			be->hdr.name);
@@ -1472,7 +1440,7 @@ widget:
 
 	/* card dapm mutex is held by the core if we are loading topology
 	 * data during sound card init. */
-	if (card->instantiated)
+	if (snd_soc_card_is_instantiated(card))
 		widget = snd_soc_dapm_new_control(dapm, &template);
 	else
 		widget = snd_soc_dapm_new_control_unlocked(dapm, &template);
@@ -1483,7 +1451,8 @@ widget:
 
 	widget->dobj.type = SND_SOC_DOBJ_WIDGET;
 	widget->dobj.widget.kcontrol_type = kcontrol_type;
-	widget->dobj.ops = tplg->ops;
+	if (tplg->ops)
+		widget->dobj.unload = tplg->ops->widget_unload;
 	widget->dobj.index = tplg->index;
 	list_add(&widget->dobj.list, &tplg->comp->dobj_list);
 
@@ -1497,7 +1466,7 @@ widget:
 	return 0;
 
 ready_err:
-	remove_widget(widget->dapm->component, &widget->dobj, SOC_TPLG_PASS_WIDGET);
+	soc_tplg_remove_widget(widget->dapm->component, &widget->dobj, SOC_TPLG_PASS_WIDGET);
 	snd_soc_dapm_free_widget(widget);
 hdr_err:
 	kfree(template.sname);
@@ -1560,7 +1529,7 @@ static int soc_tplg_dapm_complete(struct soc_tplg *tplg)
 	/* Card might not have been registered at this point.
 	 * If so, just return success.
 	*/
-	if (!card || !card->instantiated) {
+	if (!snd_soc_card_is_instantiated(card)) {
 		dev_warn(tplg->dev, "ASoC: Parent card not yet available,"
 			" widget card binding deferred\n");
 		return 0;
@@ -1571,7 +1540,7 @@ static int soc_tplg_dapm_complete(struct soc_tplg *tplg)
 		dev_err(tplg->dev, "ASoC: failed to create new widgets %d\n",
 			ret);
 
-	return 0;
+	return ret;
 }
 
 static int set_stream_info(struct soc_tplg *tplg, struct snd_soc_pcm_stream *stream,
@@ -1661,8 +1630,9 @@ static int soc_tplg_dai_create(struct soc_tplg *tplg,
 	}
 
 	dai_drv->dobj.index = tplg->index;
-	dai_drv->dobj.ops = tplg->ops;
 	dai_drv->dobj.type = SND_SOC_DOBJ_PCM;
+	if (tplg->ops)
+		dai_drv->dobj.unload = tplg->ops->dai_unload;
 	list_add(&dai_drv->dobj.list, &tplg->comp->dobj_list);
 
 	/* register the DAI to the component */
@@ -1731,8 +1701,9 @@ static int soc_tplg_fe_link_create(struct soc_tplg *tplg,
 	link->num_platforms = 1;
 
 	link->dobj.index = tplg->index;
-	link->dobj.ops = tplg->ops;
 	link->dobj.type = SND_SOC_DOBJ_DAI_LINK;
+	if (tplg->ops)
+		link->dobj.unload = tplg->ops->link_unload;
 
 	if (strlen(pcm->pcm_name)) {
 		link->name = devm_kstrdup(tplg->dev, pcm->pcm_name, GFP_KERNEL);
@@ -2139,8 +2110,9 @@ static int soc_tplg_link_config(struct soc_tplg *tplg,
 
 	/* for unloading it in snd_soc_tplg_component_remove */
 	link->dobj.index = tplg->index;
-	link->dobj.ops = tplg->ops;
 	link->dobj.type = SND_SOC_DOBJ_BACKEND_LINK;
+	if (tplg->ops)
+		link->dobj.unload = tplg->ops->link_unload;
 	list_add(&link->dobj.list, &tplg->comp->dobj_list);
 
 	return 0;
@@ -2394,12 +2366,9 @@ static int soc_tplg_manifest_load(struct soc_tplg *tplg,
 }
 
 /* validate header magic, size and type */
-static int soc_valid_header(struct soc_tplg *tplg,
+static int soc_tplg_valid_header(struct soc_tplg *tplg,
 	struct snd_soc_tplg_hdr *hdr)
 {
-	if (soc_tplg_get_hdr_offset(tplg) >= tplg->fw->size)
-		return 0;
-
 	if (le32_to_cpu(hdr->size) != sizeof(*hdr)) {
 		dev_err(tplg->dev,
 			"ASoC: invalid header size for type %d at offset 0x%lx size 0x%zx.\n",
@@ -2408,7 +2377,7 @@ static int soc_valid_header(struct soc_tplg *tplg,
 		return -EINVAL;
 	}
 
-	if (soc_tplg_get_hdr_offset(tplg) + hdr->payload_size >= tplg->fw->size) {
+	if (soc_tplg_get_hdr_offset(tplg) + le32_to_cpu(hdr->payload_size) >= tplg->fw->size) {
 		dev_err(tplg->dev,
 			"ASoC: invalid header of type %d at offset %ld payload_size %d\n",
 			le32_to_cpu(hdr->type), soc_tplg_get_hdr_offset(tplg),
@@ -2450,7 +2419,7 @@ static int soc_valid_header(struct soc_tplg *tplg,
 		return -EINVAL;
 	}
 
-	return 1;
+	return 0;
 }
 
 /* check header type and call appropriate handler */
@@ -2531,13 +2500,11 @@ static int soc_tplg_process_headers(struct soc_tplg *tplg)
 		while (!soc_tplg_is_eof(tplg)) {
 
 			/* make sure header is valid before loading */
-			ret = soc_valid_header(tplg, hdr);
+			ret = soc_tplg_valid_header(tplg, hdr);
 			if (ret < 0) {
 				dev_err(tplg->dev,
 					"ASoC: topology: invalid header: %d\n", ret);
 				return ret;
-			} else if (ret == 0) {
-				break;
 			}
 
 			/* load the header object */
@@ -2631,26 +2598,22 @@ int snd_soc_tplg_component_remove(struct snd_soc_component *comp)
 			list) {
 
 			switch (dobj->type) {
-			case SND_SOC_DOBJ_MIXER:
-				remove_mixer(comp, dobj, pass);
-				break;
-			case SND_SOC_DOBJ_ENUM:
-				remove_enum(comp, dobj, pass);
-				break;
 			case SND_SOC_DOBJ_BYTES:
-				remove_bytes(comp, dobj, pass);
+			case SND_SOC_DOBJ_ENUM:
+			case SND_SOC_DOBJ_MIXER:
+				soc_tplg_remove_kcontrol(comp, dobj, pass);
 				break;
 			case SND_SOC_DOBJ_GRAPH:
-				remove_route(comp, dobj, pass);
+				soc_tplg_remove_route(comp, dobj, pass);
 				break;
 			case SND_SOC_DOBJ_WIDGET:
-				remove_widget(comp, dobj, pass);
+				soc_tplg_remove_widget(comp, dobj, pass);
 				break;
 			case SND_SOC_DOBJ_PCM:
-				remove_dai(comp, dobj, pass);
+				soc_tplg_remove_dai(comp, dobj, pass);
 				break;
 			case SND_SOC_DOBJ_DAI_LINK:
-				remove_link(comp, dobj, pass);
+				soc_tplg_remove_link(comp, dobj, pass);
 				break;
 			case SND_SOC_DOBJ_BACKEND_LINK:
 				/*