ASoC: topology: Unify code for creating standalone and widget mixer control

Code used to create standalone and widget mixer control is same, with
exception that in standalone case dynamic object needs to be registered
and control created directly.
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Link: https://patch.msgid.link/20240627101850.2191513-13-amadeuszx.slawinski@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-topology.c

@@ -909,49 +909,21 @@ static int soc_tplg_dbytes_create(struct soc_tplg *tplg, size_t size)
 
 static int soc_tplg_dmixer_create(struct soc_tplg *tplg, size_t size)
 {
-	struct snd_soc_tplg_mixer_control *mc;
+	struct snd_kcontrol_new kc = {0};
 	struct soc_mixer_control *sm;
-	struct snd_kcontrol_new kc;
-	int ret = 0;
+	int ret;
 
 	if (soc_tplg_check_elem_count(tplg,
 				      sizeof(struct snd_soc_tplg_mixer_control),
 				      1, size, "mixers"))
 		return -EINVAL;
 
-	mc = (struct snd_soc_tplg_mixer_control *)tplg->pos;
-
-	/* validate kcontrol */
-	if (strnlen(mc->hdr.name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
-		SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
-		return -EINVAL;
-
-	sm = devm_kzalloc(tplg->dev, sizeof(*sm), GFP_KERNEL);
-	if (sm == NULL)
-		return -ENOMEM;
-	tplg->pos += (sizeof(struct snd_soc_tplg_mixer_control) +
-		      le32_to_cpu(mc->priv.size));
-
-	dev_dbg(tplg->dev,
-		"ASoC: adding mixer kcontrol %s with access 0x%x\n",
-		mc->hdr.name, mc->hdr.access);
-
-	memset(&kc, 0, sizeof(kc));
-	kc.name = mc->hdr.name;
-	kc.private_value = (long)sm;
-	kc.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
-	kc.access = le32_to_cpu(mc->hdr.access);
-
-	/* we only support FL/FR channel mapping atm */
-	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);
+	ret = soc_tplg_control_dmixer_create(tplg, &kc);
+	if (ret)
+		return ret;
 
-	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);
+	/* register dynamic object */
+	sm = (struct soc_mixer_control *)&kc.private_value;
 
 	INIT_LIST_HEAD(&sm->dobj.list);
 	sm->dobj.type = SND_SOC_DOBJ_MIXER;
@@ -959,33 +931,13 @@ static int soc_tplg_dmixer_create(struct soc_tplg *tplg, size_t size)
 	if (tplg->ops)
 		sm->dobj.unload = tplg->ops->control_unload;
 
-	/* map io handlers */
-	ret = soc_tplg_kcontrol_bind_io(&mc->hdr, &kc, tplg);
-	if (ret) {
-		soc_control_err(tplg, &mc->hdr, mc->hdr.name);
-		goto err;
-	}
-
-	/* create any TLV data */
-	ret = soc_tplg_create_tlv(tplg, &kc, &mc->hdr);
-	if (ret < 0) {
-		dev_err(tplg->dev, "ASoC: failed to create TLV %s\n", mc->hdr.name);
-		goto err;
-	}
-
-	/* pass control to driver for optional further init */
-	ret = soc_tplg_control_load(tplg, &kc, &mc->hdr);
-	if (ret < 0)
-		goto err;
-
-	/* register control here */
+	/* create control directly */
 	ret = soc_tplg_add_kcontrol(tplg, &kc, &sm->dobj.control.kcontrol);
 	if (ret < 0)
-		goto err;
+		return ret;
 
 	list_add(&sm->dobj.list, &tplg->comp->dobj_list);
 
-err:
 	return ret;
 }