ASoC: topology: Add topology core

The topology core parses the FW topology file for known block types and
instanciates any common ALSA/ASoC objects that it discovers. The core
also passes any block that is does not understand to client component
drivers for enumeration.

The core exports some APIs to client drivers in order to load and unload
firmware topology data as use case require.

Currently the core deals with the following object types :-

 o kcontrols. This includes TLV, enumerated and bytes controls.
 o DAPM widgets. All types with any associated kcontrol.
 o DAPM graph.
 o FE PCM. FE PCM capabilities and configuration can be defined.
 o BE DAI Link. BE DAI link capabilities and configuration can be defined.
 o Codec <-> codec style links capabilities and configuration.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

3 files changed, 1831 insertions, 0 deletions

diff --git a/sound/soc/Makefile b/sound/soc/Makefile
index 974ba708b482..c2ef1ecefcbd 100644
--- a/sound/soc/Makefile
+++ b/sound/soc/Makefile
@@ -1,5 +1,6 @@
 snd-soc-core-objs := soc-core.o soc-dapm.o soc-jack.o soc-cache.o soc-utils.o
 snd-soc-core-objs += soc-pcm.o soc-compress.o soc-io.o soc-devres.o soc-ops.o
+snd-soc-core-objs += soc-topology.o
 
 ifneq ($(CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM),)
 snd-soc-core-objs += soc-generic-dmaengine-pcm.o
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 95b5f034d864..8fafdca5cdf5 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -40,6 +40,7 @@
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
 #include <sound/soc-dpcm.h>
+#include <sound/soc-topology.h>
 #include <sound/initval.h>
 
 #define CREATE_TRACE_POINTS
@@ -2422,6 +2423,7 @@ int snd_soc_register_card(struct snd_soc_card *card)
 		card->rtd_aux[i].card = card;
 
 	INIT_LIST_HEAD(&card->dapm_dirty);
+	INIT_LIST_HEAD(&card->dobj_list);
 	card->instantiated = 0;
 	mutex_init(&card->mutex);
 	mutex_init(&card->dapm_mutex);
@@ -2736,6 +2738,7 @@ static void snd_soc_component_add_unlocked(struct snd_soc_component *component)
 	}
 
 	list_add(&component->list, &component_list);
+	INIT_LIST_HEAD(&component->dobj_list);
 }
 
 static void snd_soc_component_add(struct snd_soc_component *component)
@@ -2812,6 +2815,7 @@ void snd_soc_unregister_component(struct device *dev)
 	return;
 
 found:
+	snd_soc_tplg_component_remove(cmpnt, SND_SOC_TPLG_INDEX_ALL);
 	snd_soc_component_del_unlocked(cmpnt);
 	mutex_unlock(&client_mutex);
 	snd_soc_component_cleanup(cmpnt);
diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
new file mode 100644
index 000000000000..d0960683c409
--- /dev/null
+++ b/sound/soc/soc-topology.c
@@ -0,0 +1,1826 @@
+/*
+ * soc-topology.c  --  ALSA SoC Topology
+ *
+ * Copyright (C) 2012 Texas Instruments Inc.
+ * Copyright (C) 2015 Intel Corporation.
+ *
+ * Authors: Liam Girdwood <liam.r.girdwood@linux.intel.com>
+ *		K, Mythri P <mythri.p.k@intel.com>
+ *		Prusty, Subhransu S <subhransu.s.prusty@intel.com>
+ *		B, Jayachandran <jayachandran.b@intel.com>
+ *		Abdullah, Omair M <omair.m.abdullah@intel.com>
+ *		Jin, Yao <yao.jin@intel.com>
+ *		Lin, Mengdong <mengdong.lin@intel.com>
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ *  Add support to read audio firmware topology alongside firmware text. The
+ *  topology data can contain kcontrols, DAPM graphs, widgets, DAIs, DAI links,
+ *  equalizers, firmware, coefficients etc.
+ *
+ *  This file only manages the core ALSA and ASoC components, all other bespoke
+ *  firmware topology data is passed to component drivers for bespoke handling.
+ */
+
+#include <linux/kernel.h>
+#include <linux/export.h>
+#include <linux/list.h>
+#include <linux/firmware.h>
+#include <linux/slab.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/soc-topology.h>
+
+/*
+ * We make several passes over the data (since it wont necessarily be ordered)
+ * and process objects in the following order. This guarantees the component
+ * drivers will be ready with any vendor data before the mixers and DAPM objects
+ * are loaded (that may make use of the vendor data).
+ */
+#define SOC_TPLG_PASS_MANIFEST		0
+#define SOC_TPLG_PASS_VENDOR		1
+#define SOC_TPLG_PASS_MIXER		2
+#define SOC_TPLG_PASS_WIDGET		3
+#define SOC_TPLG_PASS_GRAPH		4
+#define SOC_TPLG_PASS_PINS		5
+#define SOC_TPLG_PASS_PCM_DAI		6
+
+#define SOC_TPLG_PASS_START	SOC_TPLG_PASS_MANIFEST
+#define SOC_TPLG_PASS_END	SOC_TPLG_PASS_PCM_DAI
+
+struct soc_tplg {
+	const struct firmware *fw;
+
+	/* runtime FW parsing */
+	const u8 *pos;		/* read postion */
+	const u8 *hdr_pos;	/* header position */
+	unsigned int pass;	/* pass number */
+
+	/* component caller */
+	struct device *dev;
+	struct snd_soc_component *comp;
+	u32 index;	/* current block index */
+	u32 req_index;	/* required index, only loaded/free matching blocks */
+
+	/* kcontrol operations */
+	const struct snd_soc_tplg_kcontrol_ops *io_ops;
+	int io_ops_count;
+
+	/* optional fw loading callbacks to component drivers */
+	struct snd_soc_tplg_ops *ops;
+};
+
+static int soc_tplg_process_headers(struct soc_tplg *tplg);
+static void soc_tplg_complete(struct soc_tplg *tplg);
+struct snd_soc_dapm_widget *
+snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
+			 const struct snd_soc_dapm_widget *widget);
+struct snd_soc_dapm_widget *
+snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
+			 const struct snd_soc_dapm_widget *widget);
+
+/* 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)
+{
+	const u8 *end = tplg->pos + elem_size * count;
+
+	if (end > tplg->fw->data + tplg->fw->size) {
+		dev_err(tplg->dev, "ASoC: %s overflow end of data\n",
+			elem_type);
+		return -EINVAL;
+	}
+
+	/* check there is enough room in chunk for control.
+	   extra bytes at the end of control are for vendor data here  */
+	if (elem_size * count > bytes) {
+		dev_err(tplg->dev,
+			"ASoC: %s count %d of size %zu is bigger than chunk %zu\n",
+			elem_type, count, elem_size, bytes);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static inline int soc_tplg_is_eof(struct soc_tplg *tplg)
+{
+	const u8 *end = tplg->hdr_pos;
+
+	if (end >= tplg->fw->data + tplg->fw->size)
+		return 1;
+	return 0;
+}
+
+static inline unsigned long soc_tplg_get_hdr_offset(struct soc_tplg *tplg)
+{
+	return (unsigned long)(tplg->hdr_pos - tplg->fw->data);
+}
+
+static inline unsigned long soc_tplg_get_offset(struct soc_tplg *tplg)
+{
+	return (unsigned long)(tplg->pos - tplg->fw->data);
+}
+
+/* mapping of Kcontrol types and associated operations. */
+static const struct snd_soc_tplg_kcontrol_ops io_ops[] = {
+	{SND_SOC_TPLG_CTL_VOLSW, snd_soc_get_volsw,
+		snd_soc_put_volsw, snd_soc_info_volsw},
+	{SND_SOC_TPLG_CTL_VOLSW_SX, snd_soc_get_volsw_sx,
+		snd_soc_put_volsw_sx, NULL},
+	{SND_SOC_TPLG_CTL_ENUM, snd_soc_get_enum_double,
+		snd_soc_put_enum_double, snd_soc_info_enum_double},
+	{SND_SOC_TPLG_CTL_ENUM_VALUE, snd_soc_get_enum_double,
+		snd_soc_put_enum_double, NULL},
+	{SND_SOC_TPLG_CTL_BYTES, snd_soc_bytes_get,
+		snd_soc_bytes_put, snd_soc_bytes_info},
+	{SND_SOC_TPLG_CTL_RANGE, snd_soc_get_volsw_range,
+		snd_soc_put_volsw_range, snd_soc_info_volsw_range},
+	{SND_SOC_TPLG_CTL_VOLSW_XR_SX, snd_soc_get_xr_sx,
+		snd_soc_put_xr_sx, snd_soc_info_xr_sx},
+	{SND_SOC_TPLG_CTL_STROBE, snd_soc_get_strobe,
+		snd_soc_put_strobe, NULL},
+	{SND_SOC_TPLG_DAPM_CTL_VOLSW, snd_soc_dapm_get_volsw,
+		snd_soc_dapm_put_volsw, NULL},
+	{SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE, snd_soc_dapm_get_enum_double,
+		snd_soc_dapm_put_enum_double, snd_soc_info_enum_double},
+	{SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT, snd_soc_dapm_get_enum_double,
+		snd_soc_dapm_put_enum_double, NULL},
+	{SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE, snd_soc_dapm_get_enum_double,
+		snd_soc_dapm_put_enum_double, NULL},
+	{SND_SOC_TPLG_DAPM_CTL_PIN, snd_soc_dapm_get_pin_switch,
+		snd_soc_dapm_put_pin_switch, snd_soc_dapm_info_pin_switch},
+};
+
+struct soc_tplg_map {
+	int uid;
+	int kid;
+};
+
+/* mapping of widget types from UAPI IDs to kernel IDs */
+static const struct soc_tplg_map dapm_map[] = {
+	{SND_SOC_TPLG_DAPM_INPUT, snd_soc_dapm_input},
+	{SND_SOC_TPLG_DAPM_OUTPUT, snd_soc_dapm_output},
+	{SND_SOC_TPLG_DAPM_MUX, snd_soc_dapm_mux},
+	{SND_SOC_TPLG_DAPM_MIXER, snd_soc_dapm_mixer},
+	{SND_SOC_TPLG_DAPM_PGA, snd_soc_dapm_pga},
+	{SND_SOC_TPLG_DAPM_OUT_DRV, snd_soc_dapm_out_drv},
+	{SND_SOC_TPLG_DAPM_ADC, snd_soc_dapm_adc},
+	{SND_SOC_TPLG_DAPM_DAC, snd_soc_dapm_dac},
+	{SND_SOC_TPLG_DAPM_SWITCH, snd_soc_dapm_switch},
+	{SND_SOC_TPLG_DAPM_PRE, snd_soc_dapm_pre},
+	{SND_SOC_TPLG_DAPM_POST, snd_soc_dapm_post},
+	{SND_SOC_TPLG_DAPM_AIF_IN, snd_soc_dapm_aif_in},
+	{SND_SOC_TPLG_DAPM_AIF_OUT, snd_soc_dapm_aif_out},
+	{SND_SOC_TPLG_DAPM_DAI_IN, snd_soc_dapm_dai_in},
+	{SND_SOC_TPLG_DAPM_DAI_OUT, snd_soc_dapm_dai_out},
+	{SND_SOC_TPLG_DAPM_DAI_LINK, snd_soc_dapm_dai_link},
+};
+
+static int tplc_chan_get_reg(struct soc_tplg *tplg,
+	struct snd_soc_tplg_channel *chan, int map)
+{
+	int i;
+
+	for (i = 0; i < SND_SOC_TPLG_MAX_CHAN; i++) {
+		if (chan[i].id == map)
+			return chan[i].reg;
+	}
+
+	return -EINVAL;
+}
+
+static int tplc_chan_get_shift(struct soc_tplg *tplg,
+	struct snd_soc_tplg_channel *chan, int map)
+{
+	int i;
+
+	for (i = 0; i < SND_SOC_TPLG_MAX_CHAN; i++) {
+		if (chan[i].id == map)
+			return chan[i].shift;
+	}
+
+	return -EINVAL;
+}
+
+static int get_widget_id(int tplg_type)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(dapm_map); i++) {
+		if (tplg_type == dapm_map[i].uid)
+			return dapm_map[i].kid;
+	}
+
+	return -EINVAL;
+}
+
+static enum snd_soc_dobj_type get_dobj_mixer_type(
+	struct snd_soc_tplg_ctl_hdr *control_hdr)
+{
+	if (control_hdr == NULL)
+		return SND_SOC_DOBJ_NONE;
+
+	switch (control_hdr->ops.info) {
+	case SND_SOC_TPLG_CTL_VOLSW:
+	case SND_SOC_TPLG_CTL_VOLSW_SX:
+	case SND_SOC_TPLG_CTL_VOLSW_XR_SX:
+	case SND_SOC_TPLG_CTL_RANGE:
+	case SND_SOC_TPLG_CTL_STROBE:
+		return SND_SOC_DOBJ_MIXER;
+	case SND_SOC_TPLG_CTL_ENUM:
+	case SND_SOC_TPLG_CTL_ENUM_VALUE:
+		return SND_SOC_DOBJ_ENUM;
+	case SND_SOC_TPLG_CTL_BYTES:
+		return SND_SOC_DOBJ_BYTES;
+	default:
+		return SND_SOC_DOBJ_NONE;
+	}
+}
+
+static enum snd_soc_dobj_type get_dobj_type(struct snd_soc_tplg_hdr *hdr,
+	struct snd_soc_tplg_ctl_hdr *control_hdr)
+{
+	switch (hdr->type) {
+	case SND_SOC_TPLG_TYPE_MIXER:
+		return get_dobj_mixer_type(control_hdr);
+	case SND_SOC_TPLG_TYPE_DAPM_GRAPH:
+	case SND_SOC_TPLG_TYPE_MANIFEST:
+		return SND_SOC_DOBJ_NONE;
+	case SND_SOC_TPLG_TYPE_DAPM_WIDGET:
+		return SND_SOC_DOBJ_WIDGET;
+	case SND_SOC_TPLG_TYPE_DAI_LINK:
+		return SND_SOC_DOBJ_DAI_LINK;
+	case SND_SOC_TPLG_TYPE_PCM:
+		return SND_SOC_DOBJ_PCM;
+	case SND_SOC_TPLG_TYPE_CODEC_LINK:
+		return SND_SOC_DOBJ_CODEC_LINK;
+	default:
+		return SND_SOC_DOBJ_NONE;
+	}
+}
+
+static inline void soc_bind_err(struct soc_tplg *tplg,
+	struct snd_soc_tplg_ctl_hdr *hdr, int index)
+{
+	dev_err(tplg->dev,
+		"ASoC: invalid control type (g,p,i) %d:%d:%d index %d at 0x%lx\n",
+		hdr->ops.get, hdr->ops.put, hdr->ops.info, index,
+		soc_tplg_get_offset(tplg));
+}
+
+static inline void soc_control_err(struct soc_tplg *tplg,
+	struct snd_soc_tplg_ctl_hdr *hdr, const char *name)
+{
+	dev_err(tplg->dev,
+		"ASoC: no complete mixer IO handler for %s type (g,p,i) %d:%d:%d at 0x%lx\n",
+		name, hdr->ops.get, hdr->ops.put, hdr->ops.info,
+		soc_tplg_get_offset(tplg));
+}
+
+/* pass vendor data to component driver for processing */
+static int soc_tplg_vendor_load_(struct soc_tplg *tplg,
+	struct snd_soc_tplg_hdr *hdr)
+{
+	int ret = 0;
+
+	if (tplg->comp && tplg->ops && tplg->ops->vendor_load)
+		ret = tplg->ops->vendor_load(tplg->comp, hdr);
+	else {
+		dev_err(tplg->dev, "ASoC: no vendor load callback for ID %d\n",
+			hdr->vendor_type);
+		return -EINVAL;
+	}
+
+	if (ret < 0)
+		dev_err(tplg->dev,
+			"ASoC: vendor load failed at hdr offset %ld/0x%lx for type %d:%d\n",
+			soc_tplg_get_hdr_offset(tplg),
+			soc_tplg_get_hdr_offset(tplg),
+			hdr->type, hdr->vendor_type);
+	return ret;
+}
+
+/* pass vendor data to component driver for processing */
+static int soc_tplg_vendor_load(struct soc_tplg *tplg,
+	struct snd_soc_tplg_hdr *hdr)
+{
+	if (tplg->pass != SOC_TPLG_PASS_VENDOR)
+		return 0;
+
+	return soc_tplg_vendor_load_(tplg, hdr);
+}
+
+/* optionally pass new dynamic widget to component driver. This is mainly for
+ * external widgets where we can assign private data/ops */
+static int soc_tplg_widget_load(struct soc_tplg *tplg,
+	struct snd_soc_dapm_widget *w, struct snd_soc_tplg_dapm_widget *tplg_w)
+{
+	if (tplg->comp && tplg->ops && tplg->ops->widget_load)
+		return tplg->ops->widget_load(tplg->comp, w, tplg_w);
+
+	return 0;
+}
+
+/* pass dynamic FEs configurations to component driver */
+static int soc_tplg_pcm_dai_load(struct soc_tplg *tplg,
+	struct snd_soc_tplg_pcm_dai *pcm_dai, int num_pcm_dai)
+{
+	if (tplg->comp && tplg->ops && tplg->ops->pcm_dai_load)
+		return tplg->ops->pcm_dai_load(tplg->comp, pcm_dai, num_pcm_dai);
+
+	return 0;
+}
+
+/* tell the component driver that all firmware has been loaded in this request */
+static void soc_tplg_complete(struct soc_tplg *tplg)
+{
+	if (tplg->comp && tplg->ops && tplg->ops->complete)
+		tplg->ops->complete(tplg->comp);
+}
+
+/* add a dynamic kcontrol */
+static int soc_tplg_add_dcontrol(struct snd_card *card, struct device *dev,
+	const struct snd_kcontrol_new *control_new, const char *prefix,
+	void *data, struct snd_kcontrol **kcontrol)
+{
+	int err;
+
+	*kcontrol = snd_soc_cnew(control_new, data, control_new->name, prefix);
+	if (*kcontrol == NULL) {
+		dev_err(dev, "ASoC: Failed to create new kcontrol %s\n",
+		control_new->name);
+		return -ENOMEM;
+	}
+
+	err = snd_ctl_add(card, *kcontrol);
+	if (err < 0) {
+		dev_err(dev, "ASoC: Failed to add %s: %d\n",
+			control_new->name, err);
+		return err;
+	}
+
+	return 0;
+}
+
+/* add a dynamic kcontrol for component driver */
+static int soc_tplg_add_kcontrol(struct soc_tplg *tplg,
+	struct snd_kcontrol_new *k, struct snd_kcontrol **kcontrol)
+{
+	struct snd_soc_component *comp = tplg->comp;
+
+	return soc_tplg_add_dcontrol(comp->card->snd_card,
+				comp->dev, k, NULL, 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;
+	struct soc_mixer_control *sm =
+		container_of(dobj, struct soc_mixer_control, dobj);
+	const unsigned int *p = NULL;
+
+	if (pass != SOC_TPLG_PASS_MIXER)
+		return;
+
+	if (dobj->ops && dobj->ops->control_unload)
+		dobj->ops->control_unload(comp, dobj);
+
+	if (sm->dobj.control.kcontrol->tlv.p)
+		p = sm->dobj.control.kcontrol->tlv.p;
+	snd_ctl_remove(card, sm->dobj.control.kcontrol);
+	list_del(&sm->dobj.list);
+	kfree(sm);
+	kfree(p);
+}
+
+/* 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;
+	struct soc_enum *se = container_of(dobj, struct soc_enum, dobj);
+	int i;
+
+	if (pass != SOC_TPLG_PASS_MIXER)
+		return;
+
+	if (dobj->ops && dobj->ops->control_unload)
+		dobj->ops->control_unload(comp, dobj);
+
+	snd_ctl_remove(card, se->dobj.control.kcontrol);
+	list_del(&se->dobj.list);
+
+	kfree(se->dobj.control.dvalues);
+	for (i = 0; i < se->items; i++)
+		kfree(se->dobj.control.dtexts[i]);
+	kfree(se);
+}
+
+/* remove a byte kcontrol */
+static void remove_bytes(struct snd_soc_component *comp,
+	struct snd_soc_dobj *dobj, int pass)
+{
+	struct snd_card *card = comp->card->snd_card;
+	struct soc_bytes_ext *sb =
+		container_of(dobj, struct soc_bytes_ext, dobj);
+
+	if (pass != SOC_TPLG_PASS_MIXER)
+		return;
+
+	if (dobj->ops && dobj->ops->control_unload)
+		dobj->ops->control_unload(comp, dobj);
+
+	snd_ctl_remove(card, sb->dobj.control.kcontrol);
+	list_del(&sb->dobj.list);
+	kfree(sb);
+}
+
+/* remove a widget and it's kcontrols - routes must be removed first */
+static void remove_widget(struct snd_soc_component *comp,
+	struct snd_soc_dobj *dobj, int pass)
+{
+	struct snd_card *card = comp->card->snd_card;
+	struct snd_soc_dapm_widget *w =
+		container_of(dobj, struct snd_soc_dapm_widget, dobj);
+	int i;
+
+	if (pass != SOC_TPLG_PASS_WIDGET)
+		return;
+
+	if (dobj->ops && dobj->ops->widget_unload)
+		dobj->ops->widget_unload(comp, dobj);
+
+	/*
+	 * Dynamic Widgets either have 1 enum kcontrol or 1..N mixers.
+	 * The enum may either have an array of values or strings.
+	 */
+	if (dobj->widget.kcontrol_enum) {
+		/* enumerated widget mixer */
+		struct soc_enum *se =
+			(struct soc_enum *)w->kcontrols[0]->private_value;
+
+		snd_ctl_remove(card, w->kcontrols[0]);
+
+		kfree(se->dobj.control.dvalues);
+		for (i = 0; i < se->items; i++)
+			kfree(se->dobj.control.dtexts[i]);
+
+		kfree(se);
+		kfree(w->kcontrol_news);
+	} else {
+		/* non enumerated widget mixer */
+		for (i = 0; i < w->num_kcontrols; i++) {
+			struct snd_kcontrol *kcontrol = w->kcontrols[i];
+			struct soc_mixer_control *sm =
+			(struct soc_mixer_control *) kcontrol->private_value;
+
+			kfree(w->kcontrols[i]->tlv.p);
+
+			snd_ctl_remove(card, w->kcontrols[i]);
+			kfree(sm);
+		}
+		kfree(w->kcontrol_news);
+	}
+	/* widget w is freed by soc-dapm.c */
+}
+
+/* remove PCM DAI configurations */
+static void remove_pcm_dai(struct snd_soc_component *comp,
+	struct snd_soc_dobj *dobj, int pass)
+{
+	if (pass != SOC_TPLG_PASS_PCM_DAI)
+		return;
+
+	if (dobj->ops && dobj->ops->pcm_dai_unload)
+		dobj->ops->pcm_dai_unload(comp, dobj);
+
+	list_del(&dobj->list);
+	kfree(dobj);
+}
+
+/* bind a kcontrol to it's IO handlers */
+static int soc_tplg_kcontrol_bind_io(struct snd_soc_tplg_ctl_hdr *hdr,
+	struct snd_kcontrol_new *k,
+	const struct snd_soc_tplg_kcontrol_ops *ops, int num_ops,
+	const struct snd_soc_tplg_kcontrol_ops *bops, int num_bops)
+{
+	int i;
+
+	/* try and map standard kcontrols handler first */
+	for (i = 0; i < num_ops; i++) {
+
+		if (ops[i].id == hdr->ops.put)
+			k->put = ops[i].put;
+		if (ops[i].id == hdr->ops.get)
+			k->get = ops[i].get;
+		if (ops[i].id == hdr->ops.info)
+			k->info = ops[i].info;
+	}
+
+	/* standard handlers found ? */
+	if (k->put && k->get && k->info)
+		return 0;
+
+	/* none found so try bespoke handlers */
+	for (i = 0; i < num_bops; i++) {
+
+		if (k->put == NULL && bops[i].id == hdr->ops.put)
+			k->put = bops[i].put;
+		if (k->get == NULL && bops[i].id == hdr->ops.get)
+			k->get = bops[i].get;
+		if (k->info == NULL && ops[i].id == hdr->ops.info)
+			k->info = bops[i].info;
+	}
+
+	/* bespoke handlers found ? */
+	if (k->put && k->get && k->info)
+		return 0;
+
+	/* nothing to bind */
+	return -EINVAL;
+}
+
+/* bind a widgets to it's evnt handlers */
+int snd_soc_tplg_widget_bind_event(struct snd_soc_dapm_widget *w,
+		const struct snd_soc_tplg_widget_events *events,
+		int num_events, u16 event_type)
+{
+	int i;
+
+	w->event = NULL;
+
+	for (i = 0; i < num_events; i++) {
+		if (event_type == events[i].type) {
+
+			/* found - so assign event */
+			w->event = events[i].event_handler;
+			return 0;
+		}
+	}
+
+	/* not found */
+	return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_tplg_widget_bind_event);
+
+/* optionally pass new dynamic kcontrol to component driver. */
+static int soc_tplg_init_kcontrol(struct soc_tplg *tplg,
+	struct snd_kcontrol_new *k, struct snd_soc_tplg_ctl_hdr *hdr)
+{
+	if (tplg->comp && tplg->ops && tplg->ops->control_load)
+		return tplg->ops->control_load(tplg->comp, k, hdr);
+
+	return 0;
+}
+
+static int soc_tplg_create_tlv(struct soc_tplg *tplg,
+	struct snd_kcontrol_new *kc, u32 tlv_size)
+{
+	struct snd_soc_tplg_ctl_tlv *tplg_tlv;
+	struct snd_ctl_tlv *tlv;
+
+	if (tlv_size == 0)
+		return 0;
+
+	tplg_tlv = (struct snd_soc_tplg_ctl_tlv *) tplg->pos;
+	tplg->pos += tlv_size;
+
+	tlv = kzalloc(sizeof(*tlv) + tlv_size, GFP_KERNEL);
+	if (tlv == NULL)
+		return -ENOMEM;
+
+	dev_dbg(tplg->dev, " created TLV type %d size %d bytes\n",
+		tplg_tlv->numid, tplg_tlv->size);
+
+	tlv->numid = tplg_tlv->numid;
+	tlv->length = tplg_tlv->size;
+	memcpy(tlv->tlv, tplg_tlv + 1, tplg_tlv->size);
+	kc->tlv.p = (void *)tlv;
+
+	return 0;
+}
+
+static inline void soc_tplg_free_tlv(struct soc_tplg *tplg,
+	struct snd_kcontrol_new *kc)
+{
+	kfree(kc->tlv.p);
+}
+
+static int soc_tplg_dbytes_create(struct soc_tplg *tplg, unsigned int count,
+	size_t size)
+{
+	struct snd_soc_tplg_bytes_control *be;
+	struct soc_bytes_ext *sbe;
+	struct snd_kcontrol_new kc;
+	int i, err;
+
+	if (soc_tplg_check_elem_count(tplg,
+		sizeof(struct snd_soc_tplg_bytes_control), count,
+			size, "mixer bytes")) {
+		dev_err(tplg->dev, "ASoC: Invalid count %d for byte control\n",
+			count);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < count; i++) {
+		be = (struct snd_soc_tplg_bytes_control *)tplg->pos;
+
+		/* validate kcontrol */
+		if (strnlen(be->hdr.name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
+			SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
+			return -EINVAL;
+
+		sbe = kzalloc(sizeof(*sbe), GFP_KERNEL);
+		if (sbe == NULL)
+			return -ENOMEM;
+
+		tplg->pos += (sizeof(struct snd_soc_tplg_bytes_control) +
+			be->priv.size);
+
+		dev_dbg(tplg->dev,
+			"ASoC: adding bytes kcontrol %s with access 0x%x\n",
+			be->hdr.name, be->hdr.access);
+
+		memset(&kc, 0, sizeof(kc));
+		kc.name = be->hdr.name;
+		kc.private_value = (long)sbe;
+		kc.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+		kc.access = be->hdr.access;
+
+		sbe->max = be->max;
+		sbe->dobj.type = SND_SOC_DOBJ_BYTES;
+		sbe->dobj.ops = tplg->ops;
+		INIT_LIST_HEAD(&sbe->dobj.list);
+
+		/* map io handlers */
+		err = soc_tplg_kcontrol_bind_io(&be->hdr, &kc, io_ops,
+			ARRAY_SIZE(io_ops), tplg->io_ops, tplg->io_ops_count);
+		if (err) {
+			soc_control_err(tplg, &be->hdr, be->hdr.name);
+			kfree(sbe);
+			continue;
+		}
+
+		/* pass control to driver for optional further init */
+		err = soc_tplg_init_kcontrol(tplg, &kc,
+			(struct snd_soc_tplg_ctl_hdr *)be);
+		if (err < 0) {
+			dev_err(tplg->dev, "ASoC: failed to init %s\n",
+				be->hdr.name);
+			kfree(sbe);
+			continue;
+		}
+
+		/* register control here */
+		err = soc_tplg_add_kcontrol(tplg, &kc,
+			&sbe->dobj.control.kcontrol);
+		if (err < 0) {
+			dev_err(tplg->dev, "ASoC: failed to add %s\n",
+				be->hdr.name);
+			kfree(sbe);
+			continue;
+		}
+
+		list_add(&sbe->dobj.list, &tplg->comp->dobj_list);
+	}
+	return 0;
+
+}
+
+static int soc_tplg_dmixer_create(struct soc_tplg *tplg, unsigned int count,
+	size_t size)
+{
+	struct snd_soc_tplg_mixer_control *mc;
+	struct soc_mixer_control *sm;
+	struct snd_kcontrol_new kc;
+	int i, err;
+
+	if (soc_tplg_check_elem_count(tplg,
+		sizeof(struct snd_soc_tplg_mixer_control),
+		count, size, "mixers")) {
+
+		dev_err(tplg->dev, "ASoC: invalid count %d for controls\n",
+			count);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < count; i++) {
+		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 = kzalloc(sizeof(*sm), GFP_KERNEL);
+		if (sm == NULL)
+			return -ENOMEM;
+		tplg->pos += (sizeof(struct snd_soc_tplg_mixer_control) +
+			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 = 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->max = mc->max;
+		sm->min = mc->min;
+		sm->invert = mc->invert;
+		sm->platform_max = mc->platform_max;
+		sm->dobj.index = tplg->index;
+		sm->dobj.ops = tplg->ops;
+		sm->dobj.type = SND_SOC_DOBJ_MIXER;
+		INIT_LIST_HEAD(&sm->dobj.list);
+
+		/* map io handlers */
+		err = soc_tplg_kcontrol_bind_io(&mc->hdr, &kc, io_ops,
+			ARRAY_SIZE(io_ops), tplg->io_ops, tplg->io_ops_count);
+		if (err) {
+			soc_control_err(tplg, &mc->hdr, mc->hdr.name);
+			kfree(sm);
+			continue;
+		}
+
+		/* pass control to driver for optional further init */
+		err = soc_tplg_init_kcontrol(tplg, &kc,
+			(struct snd_soc_tplg_ctl_hdr *) mc);
+		if (err < 0) {
+			dev_err(tplg->dev, "ASoC: failed to init %s\n",
+				mc->hdr.name);
+			kfree(sm);
+			continue;
+		}
+
+		/* create any TLV data */
+		soc_tplg_create_tlv(tplg, &kc, mc->hdr.tlv_size);
+
+		/* register control here */
+		err = soc_tplg_add_kcontrol(tplg, &kc,
+			&sm->dobj.control.kcontrol);
+		if (err < 0) {
+			dev_err(tplg->dev, "ASoC: failed to add %s\n",
+				mc->hdr.name);
+			soc_tplg_free_tlv(tplg, &kc);
+			kfree(sm);
+			continue;
+		}
+
+		list_add(&sm->dobj.list, &tplg->comp->dobj_list);
+	}
+
+	return 0;
+}
+
+static int soc_tplg_denum_create_texts(struct soc_enum *se,
+	struct snd_soc_tplg_enum_control *ec)
+{
+	int i, ret;
+
+	se->dobj.control.dtexts =
+		kzalloc(sizeof(char *) * ec->items, GFP_KERNEL);
+	if (se->dobj.control.dtexts == NULL)
+		return -ENOMEM;
+
+	for (i = 0; i < ec->items; i++) {
+
+		if (strnlen(ec->texts[i], SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
+			SNDRV_CTL_ELEM_ID_NAME_MAXLEN) {
+			ret = -EINVAL;
+			goto err;
+		}
+
+		se->dobj.control.dtexts[i] = kstrdup(ec->texts[i], GFP_KERNEL);
+		if (!se->dobj.control.dtexts[i]) {
+			ret = -ENOMEM;
+			goto err;
+		}
+	}
+
+	return 0;
+
+err:
+	for (--i; i >= 0; i--)
+		kfree(se->dobj.control.dtexts[i]);
+	kfree(se->dobj.control.dtexts);
+	return ret;
+}
+
+static int soc_tplg_denum_create_values(struct soc_enum *se,
+	struct snd_soc_tplg_enum_control *ec)
+{
+	if (ec->items > sizeof(*ec->values))
+		return -EINVAL;
+
+	se->dobj.control.dvalues =
+		kmalloc(ec->items * sizeof(u32), GFP_KERNEL);
+	if (!se->dobj.control.dvalues)
+		return -ENOMEM;
+
+	memcpy(se->dobj.control.dvalues, ec->values, ec->items * sizeof(u32));
+	return 0;
+}
+
+static int soc_tplg_denum_create(struct soc_tplg *tplg, unsigned int count,
+	size_t size)
+{
+	struct snd_soc_tplg_enum_control *ec;
+	struct soc_enum *se;
+	struct snd_kcontrol_new kc;
+	int i, ret, err;
+
+	if (soc_tplg_check_elem_count(tplg,
+		sizeof(struct snd_soc_tplg_enum_control),
+		count, size, "enums")) {
+
+		dev_err(tplg->dev, "ASoC: invalid count %d for enum controls\n",
+			count);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < count; i++) {
+		ec = (struct snd_soc_tplg_enum_control *)tplg->pos;
+		tplg->pos += (sizeof(struct snd_soc_tplg_enum_control) +
+			ec->priv.size);
+
+		/* validate kcontrol */
+		if (strnlen(ec->hdr.name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
+			SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
+			return -EINVAL;
+
+		se = kzalloc((sizeof(*se)), GFP_KERNEL);
+		if (se == NULL)
+			return -ENOMEM;
+
+		dev_dbg(tplg->dev, "ASoC: adding enum kcontrol %s size %d\n",
+			ec->hdr.name, ec->items);
+
+		memset(&kc, 0, sizeof(kc));
+		kc.name = ec->hdr.name;
+		kc.private_value = (long)se;
+		kc.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+		kc.access = 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,
+			SNDRV_CHMAP_FL);
+		se->shift_r = tplc_chan_get_shift(tplg, ec->channel,
+			SNDRV_CHMAP_FL);
+
+		se->items = ec->items;
+		se->mask = ec->mask;
+		se->dobj.index = tplg->index;
+		se->dobj.type = SND_SOC_DOBJ_ENUM;
+		se->dobj.ops = tplg->ops;
+		INIT_LIST_HEAD(&se->dobj.list);
+
+		switch (ec->hdr.ops.info) {
+		case SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE:
+		case SND_SOC_TPLG_CTL_ENUM_VALUE:
+			err = soc_tplg_denum_create_values(se, ec);
+			if (err < 0) {
+				dev_err(tplg->dev,
+					"ASoC: could not create values for %s\n",
+					ec->hdr.name);
+				kfree(se);
+				continue;
+			}
+			/* fall through and create texts */
+		case SND_SOC_TPLG_CTL_ENUM:
+		case SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE:
+		case SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT:
+			err = soc_tplg_denum_create_texts(se, ec);
+			if (err < 0) {
+				dev_err(tplg->dev,
+					"ASoC: could not create texts for %s\n",
+					ec->hdr.name);
+				kfree(se);
+				continue;
+			}
+			break;
+		default:
+			dev_err(tplg->dev,
+				"ASoC: invalid enum control type %d for %s\n",
+				ec->hdr.ops.info, ec->hdr.name);
+			kfree(se);
+			continue;
+		}
+
+		/* map io handlers */
+		err = soc_tplg_kcontrol_bind_io(&ec->hdr, &kc, io_ops,
+			ARRAY_SIZE(io_ops), tplg->io_ops, tplg->io_ops_count);
+		if (err) {
+			soc_control_err(tplg, &ec->hdr, ec->hdr.name);
+			kfree(se);
+			continue;
+		}
+
+		/* pass control to driver for optional further init */
+		err = soc_tplg_init_kcontrol(tplg, &kc,
+			(struct snd_soc_tplg_ctl_hdr *) ec);
+		if (err < 0) {
+			dev_err(tplg->dev, "ASoC: failed to init %s\n",
+				ec->hdr.name);
+			kfree(se);
+			continue;
+		}
+
+		/* register control here */
+		ret = soc_tplg_add_kcontrol(tplg,
+			&kc, &se->dobj.control.kcontrol);
+		if (ret < 0) {
+			dev_err(tplg->dev, "ASoC: could not add kcontrol %s\n",
+				ec->hdr.name);
+			kfree(se);
+			continue;
+		}
+
+		list_add(&se->dobj.list, &tplg->comp->dobj_list);
+	}
+
+	return 0;
+}
+
+static int soc_tplg_kcontrol_elems_load(struct soc_tplg *tplg,
+	struct snd_soc_tplg_hdr *hdr)
+{
+	struct snd_soc_tplg_ctl_hdr *control_hdr;
+	int i;
+
+	if (tplg->pass != SOC_TPLG_PASS_MIXER) {
+		tplg->pos += hdr->size + hdr->payload_size;
+		return 0;
+	}
+
+	dev_dbg(tplg->dev, "ASoC: adding %d kcontrols at 0x%lx\n", hdr->count,
+		soc_tplg_get_offset(tplg));
+
+	for (i = 0; i < hdr->count; i++) {
+
+		control_hdr = (struct snd_soc_tplg_ctl_hdr *)tplg->pos;
+
+		switch (control_hdr->ops.info) {
+		case SND_SOC_TPLG_CTL_VOLSW:
+		case SND_SOC_TPLG_CTL_STROBE:
+		case SND_SOC_TPLG_CTL_VOLSW_SX:
+		case SND_SOC_TPLG_CTL_VOLSW_XR_SX:
+		case SND_SOC_TPLG_CTL_RANGE:
+		case SND_SOC_TPLG_DAPM_CTL_VOLSW:
+		case SND_SOC_TPLG_DAPM_CTL_PIN:
+			soc_tplg_dmixer_create(tplg, 1, hdr->payload_size);
+			break;
+		case SND_SOC_TPLG_CTL_ENUM:
+		case SND_SOC_TPLG_CTL_ENUM_VALUE:
+		case SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE:
+		case SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT:
+		case SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE:
+			soc_tplg_denum_create(tplg, 1, hdr->payload_size);
+			break;
+		case SND_SOC_TPLG_CTL_BYTES:
+			soc_tplg_dbytes_create(tplg, 1, hdr->payload_size);
+			break;
+		default:
+			soc_bind_err(tplg, control_hdr, i);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+static int soc_tplg_dapm_graph_elems_load(struct soc_tplg *tplg,
+	struct snd_soc_tplg_hdr *hdr)
+{
+	struct snd_soc_dapm_context *dapm = &tplg->comp->dapm;
+	struct snd_soc_dapm_route route;
+	struct snd_soc_tplg_dapm_graph_elem *elem;
+	int count = hdr->count, i;
+
+	if (tplg->pass != SOC_TPLG_PASS_GRAPH) {
+		tplg->pos += hdr->size + hdr->payload_size;
+		return 0;
+	}
+
+	if (soc_tplg_check_elem_count(tplg,
+		sizeof(struct snd_soc_tplg_dapm_graph_elem),
+		count, hdr->payload_size, "graph")) {
+
+		dev_err(tplg->dev, "ASoC: invalid count %d for DAPM routes\n",
+			count);
+		return -EINVAL;
+	}
+
+	dev_dbg(tplg->dev, "ASoC: adding %d DAPM routes\n", count);
+
+	for (i = 0; i < count; i++) {
+		elem = (struct snd_soc_tplg_dapm_graph_elem *)tplg->pos;
+		tplg->pos += sizeof(struct snd_soc_tplg_dapm_graph_elem);
+
+		/* validate routes */
+		if (strnlen(elem->source, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
+			SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
+			return -EINVAL;
+		if (strnlen(elem->sink, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
+			SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
+			return -EINVAL;
+		if (strnlen(elem->control, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
+			SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
+			return -EINVAL;
+
+		route.source = elem->source;
+		route.sink = elem->sink;
+		route.connected = NULL; /* set to NULL atm for tplg users */
+		if (strnlen(elem->control, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) == 0)
+			route.control = NULL;
+		else
+			route.control = elem->control;
+
+		/* add route, but keep going if some fail */
+		snd_soc_dapm_add_routes(dapm, &route, 1);
+	}
+
+	return 0;
+}
+
+static struct snd_kcontrol_new *soc_tplg_dapm_widget_dmixer_create(
+	struct soc_tplg *tplg, int num_kcontrols)
+{
+	struct snd_kcontrol_new *kc;
+	struct soc_mixer_control *sm;
+	struct snd_soc_tplg_mixer_control *mc;
+	int i, err;
+
+	kc = kzalloc(sizeof(*kc) * num_kcontrols, GFP_KERNEL);
+	if (kc == NULL)
+		return NULL;
+
+	for (i = 0; i < num_kcontrols; i++) {
+		mc = (struct snd_soc_tplg_mixer_control *)tplg->pos;
+		sm = kzalloc(sizeof(*sm), GFP_KERNEL);
+		if (sm == NULL)
+			goto err;
+
+		tplg->pos += (sizeof(struct snd_soc_tplg_mixer_control) +
+			mc->priv.size);
+
+		/* validate kcontrol */
+		if (strnlen(mc->hdr.name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
+			SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
+			goto err_str;
+
+		dev_dbg(tplg->dev, " adding DAPM widget mixer control %s at %d\n",
+			mc->hdr.name, i);
+
+		kc[i].name = mc->hdr.name;
+		kc[i].private_value = (long)sm;
+		kc[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+		kc[i].access = 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->max = mc->max;
+		sm->min = mc->min;
+		sm->invert = mc->invert;
+		sm->platform_max = mc->platform_max;
+		sm->dobj.index = tplg->index;
+		INIT_LIST_HEAD(&sm->dobj.list);
+
+		/* map io handlers */
+		err = soc_tplg_kcontrol_bind_io(&mc->hdr, &kc[i], io_ops,
+			ARRAY_SIZE(io_ops), tplg->io_ops, tplg->io_ops_count);
+		if (err) {
+			soc_control_err(tplg, &mc->hdr, mc->hdr.name);
+			kfree(sm);
+			continue;
+		}
+
+		/* pass control to driver for optional further init */
+		err = soc_tplg_init_kcontrol(tplg, &kc[i],
+			(struct snd_soc_tplg_ctl_hdr *)mc);
+		if (err < 0) {
+			dev_err(tplg->dev, "ASoC: failed to init %s\n",
+				mc->hdr.name);
+			kfree(sm);
+			continue;
+		}
+	}
+	return kc;
+
+err_str:
+	kfree(sm);
+err:
+	for (--i; i >= 0; i--)
+		kfree((void *)kc[i].private_value);
+	kfree(kc);
+	return NULL;
+}
+
+static struct snd_kcontrol_new *soc_tplg_dapm_widget_denum_create(
+	struct soc_tplg *tplg)
+{
+	struct snd_kcontrol_new *kc;
+	struct snd_soc_tplg_enum_control *ec;
+	struct soc_enum *se;
+	int i, err;
+
+	ec = (struct snd_soc_tplg_enum_control *)tplg->pos;
+	tplg->pos += (sizeof(struct snd_soc_tplg_enum_control) +
+		ec->priv.size);
+
+	/* validate kcontrol */
+	if (strnlen(ec->hdr.name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
+		SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
+		return NULL;
+
+	kc = kzalloc(sizeof(*kc), GFP_KERNEL);
+	if (kc == NULL)
+		return NULL;
+
+	se = kzalloc(sizeof(*se), GFP_KERNEL);
+	if (se == NULL)
+		goto err;
+
+	dev_dbg(tplg->dev, " adding DAPM widget enum control %s\n",
+		ec->hdr.name);
+
+	kc->name = ec->hdr.name;
+	kc->private_value = (long)se;
+	kc->iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+	kc->access = 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, SNDRV_CHMAP_FL);
+	se->shift_r = tplc_chan_get_shift(tplg, ec->channel, SNDRV_CHMAP_FR);
+
+	se->items = ec->items;
+	se->mask = ec->mask;
+	se->dobj.index = tplg->index;
+
+	switch (ec->hdr.ops.info) {
+	case SND_SOC_TPLG_CTL_ENUM_VALUE:
+	case SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE:
+		err = soc_tplg_denum_create_values(se, ec);
+		if (err < 0) {
+			dev_err(tplg->dev, "ASoC: could not create values for %s\n",
+				ec->hdr.name);
+			goto err_se;
+		}
+		/* fall through to create texts */
+	case SND_SOC_TPLG_CTL_ENUM:
+	case SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE:
+	case SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT:
+		err = soc_tplg_denum_create_texts(se, ec);
+		if (err < 0) {
+			dev_err(tplg->dev, "ASoC: could not create texts for %s\n",
+				ec->hdr.name);
+			goto err_se;
+		}
+		break;
+	default:
+		dev_err(tplg->dev, "ASoC: invalid enum control type %d for %s\n",
+			ec->hdr.ops.info, ec->hdr.name);
+		goto err_se;
+	}
+
+	/* map io handlers */
+	err = soc_tplg_kcontrol_bind_io(&ec->hdr, kc, io_ops,
+		ARRAY_SIZE(io_ops), tplg->io_ops, tplg->io_ops_count);
+	if (err) {
+		soc_control_err(tplg, &ec->hdr, ec->hdr.name);
+		goto err_se;
+	}
+
+	/* pass control to driver for optional further init */
+	err = soc_tplg_init_kcontrol(tplg, kc,
+		(struct snd_soc_tplg_ctl_hdr *)ec);
+	if (err < 0) {
+		dev_err(tplg->dev, "ASoC: failed to init %s\n",
+			ec->hdr.name);
+		goto err_se;
+	}
+
+	return kc;
+
+err_se:
+	/* free values and texts */
+	kfree(se->dobj.control.dvalues);
+	for (i = 0; i < ec->items; i++)
+		kfree(se->dobj.control.dtexts[i]);
+
+	kfree(se);
+err:
+	kfree(kc);
+
+	return NULL;
+}
+
+static struct snd_kcontrol_new *soc_tplg_dapm_widget_dbytes_create(
+	struct soc_tplg *tplg, int count)
+{
+	struct snd_soc_tplg_bytes_control *be;
+	struct soc_bytes_ext  *sbe;
+	struct snd_kcontrol_new *kc;
+	int i, err;
+
+	kc = kzalloc(sizeof(*kc) * count, GFP_KERNEL);
+	if (!kc)
+		return NULL;
+
+	for (i = 0; i < count; i++) {
+		be = (struct snd_soc_tplg_bytes_control *)tplg->pos;
+
+		/* validate kcontrol */
+		if (strnlen(be->hdr.name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
+			SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
+			goto err;
+
+		sbe = kzalloc(sizeof(*sbe), GFP_KERNEL);
+		if (sbe == NULL)
+			goto err;
+
+		tplg->pos += (sizeof(struct snd_soc_tplg_bytes_control) +
+			be->priv.size);
+
+		dev_dbg(tplg->dev,
+			"ASoC: adding bytes kcontrol %s with access 0x%x\n",
+			be->hdr.name, be->hdr.access);
+
+		memset(kc, 0, sizeof(*kc));
+		kc[i].name = be->hdr.name;
+		kc[i].private_value = (long)sbe;
+		kc[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+		kc[i].access = be->hdr.access;
+
+		sbe->max = be->max;
+		INIT_LIST_HEAD(&sbe->dobj.list);
+
+		/* map standard io handlers and check for external handlers */
+		err = soc_tplg_kcontrol_bind_io(&be->hdr, &kc[i], io_ops,
+				ARRAY_SIZE(io_ops), tplg->io_ops,
+				tplg->io_ops_count);
+		if (err) {
+			soc_control_err(tplg, &be->hdr, be->hdr.name);
+			kfree(sbe);
+			continue;
+		}
+
+		/* pass control to driver for optional further init */
+		err = soc_tplg_init_kcontrol(tplg, &kc[i],
+			(struct snd_soc_tplg_ctl_hdr *)be);
+		if (err < 0) {
+			dev_err(tplg->dev, "ASoC: failed to init %s\n",
+				be->hdr.name);
+			kfree(sbe);
+			continue;
+		}
+	}
+
+	return kc;
+
+err:
+	for (--i; i >= 0; i--)
+		kfree((void *)kc[i].private_value);
+
+	kfree(kc);
+	return NULL;
+}
+
+static int soc_tplg_dapm_widget_create(struct soc_tplg *tplg,
+	struct snd_soc_tplg_dapm_widget *w)
+{
+	struct snd_soc_dapm_context *dapm = &tplg->comp->dapm;
+	struct snd_soc_dapm_widget template, *widget;
+	struct snd_soc_tplg_ctl_hdr *control_hdr;
+	struct snd_soc_card *card = tplg->comp->card;
+	int ret = 0;
+
+	if (strnlen(w->name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
+		SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
+		return -EINVAL;
+	if (strnlen(w->sname, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
+		SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
+		return -EINVAL;
+
+	dev_dbg(tplg->dev, "ASoC: creating DAPM widget %s id %d\n",
+		w->name, w->id);
+
+	memset(&template, 0, sizeof(template));
+
+	/* map user to kernel widget ID */
+	template.id = get_widget_id(w->id);
+	if (template.id < 0)
+		return template.id;
+
+	template.name = kstrdup(w->name, GFP_KERNEL);
+	if (!template.name)
+		return -ENOMEM;
+	template.sname = kstrdup(w->sname, GFP_KERNEL);
+	if (!template.sname) {
+		ret = -ENOMEM;
+		goto err;
+	}
+	template.reg = w->reg;
+	template.shift = w->shift;
+	template.mask = w->mask;
+	template.on_val = w->invert ? 0 : 1;
+	template.off_val = w->invert ? 1 : 0;
+	template.ignore_suspend = w->ignore_suspend;
+	template.event_flags = w->event_flags;
+	template.dobj.index = tplg->index;
+
+	tplg->pos +=
+		(sizeof(struct snd_soc_tplg_dapm_widget) + w->priv.size);
+	if (w->num_kcontrols == 0) {
+		template.num_kcontrols = 0;
+		goto widget;
+	}
+
+	control_hdr = (struct snd_soc_tplg_ctl_hdr *)tplg->pos;
+	dev_dbg(tplg->dev, "ASoC: template %s has %d controls of type %x\n",
+		w->name, w->num_kcontrols, control_hdr->type);
+
+	switch (control_hdr->ops.info) {
+	case SND_SOC_TPLG_CTL_VOLSW:
+	case SND_SOC_TPLG_CTL_STROBE:
+	case SND_SOC_TPLG_CTL_VOLSW_SX:
+	case SND_SOC_TPLG_CTL_VOLSW_XR_SX:
+	case SND_SOC_TPLG_CTL_RANGE:
+	case SND_SOC_TPLG_DAPM_CTL_VOLSW:
+		template.num_kcontrols = w->num_kcontrols;
+		template.kcontrol_news =
+			soc_tplg_dapm_widget_dmixer_create(tplg,
+			template.num_kcontrols);
+		if (!template.kcontrol_news) {
+			ret = -ENOMEM;
+			goto hdr_err;
+		}
+		break;
+	case SND_SOC_TPLG_CTL_ENUM:
+	case SND_SOC_TPLG_CTL_ENUM_VALUE:
+	case SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE:
+	case SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT:
+	case SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE:
+		template.dobj.widget.kcontrol_enum = 1;
+		template.num_kcontrols = 1;
+		template.kcontrol_news =
+			soc_tplg_dapm_widget_denum_create(tplg);
+		if (!template.kcontrol_news) {
+			ret = -ENOMEM;
+			goto hdr_err;
+		}
+		break;
+	case SND_SOC_TPLG_CTL_BYTES:
+		template.num_kcontrols = w->num_kcontrols;
+		template.kcontrol_news =
+			soc_tplg_dapm_widget_dbytes_create(tplg,
+				template.num_kcontrols);
+		if (!template.kcontrol_news) {
+			ret = -ENOMEM;
+			goto hdr_err;
+		}
+		break;
+	default:
+		dev_err(tplg->dev, "ASoC: invalid widget control type %d:%d:%d\n",
+			control_hdr->ops.get, control_hdr->ops.put,
+			control_hdr->ops.info);
+		ret = -EINVAL;
+		goto hdr_err;
+	}
+
+widget:
+	ret = soc_tplg_widget_load(tplg, &template, w);
+	if (ret < 0)
+		goto hdr_err;
+
+	/* card dapm mutex is held by the core if we are loading topology
+	 * data during sound card init. */
+	if (card->instantiated)
+		widget = snd_soc_dapm_new_control(dapm, &template);
+	else
+		widget = snd_soc_dapm_new_control_unlocked(dapm, &template);
+	if (widget == NULL) {
+		dev_err(tplg->dev, "ASoC: failed to create widget %s controls\n",
+			w->name);
+		goto hdr_err;
+	}
+
+	widget->dobj.type = SND_SOC_DOBJ_WIDGET;
+	widget->dobj.ops = tplg->ops;
+	widget->dobj.index = tplg->index;
+	list_add(&widget->dobj.list, &tplg->comp->dobj_list);
+	return 0;
+
+hdr_err:
+	kfree(template.sname);
+err:
+	kfree(template.name);
+	return ret;
+}
+
+static int soc_tplg_dapm_widget_elems_load(struct soc_tplg *tplg,
+	struct snd_soc_tplg_hdr *hdr)
+{
+	struct snd_soc_tplg_dapm_widget *widget;
+	int ret, count = hdr->count, i;
+
+	if (tplg->pass != SOC_TPLG_PASS_WIDGET)
+		return 0;
+
+	dev_dbg(tplg->dev, "ASoC: adding %d DAPM widgets\n", count);
+
+	for (i = 0; i < count; i++) {
+		widget = (struct snd_soc_tplg_dapm_widget *) tplg->pos;
+		ret = soc_tplg_dapm_widget_create(tplg, widget);
+		if (ret < 0)
+			dev_err(tplg->dev, "ASoC: failed to load widget %s\n",
+				widget->name);
+	}
+
+	return 0;
+}
+
+static int soc_tplg_dapm_complete(struct soc_tplg *tplg)
+{
+	struct snd_soc_card *card = tplg->comp->card;
+	int ret;
+
+	/* Card might not have been registered at this point.
+	 * If so, just return success.
+	*/
+	if (!card || !card->instantiated) {
+		dev_warn(tplg->dev, "ASoC: Parent card not yet available,"
+				"Do not add new widgets now\n");
+		return 0;
+	}
+
+	ret = snd_soc_dapm_new_widgets(card);
+	if (ret < 0)
+		dev_err(tplg->dev, "ASoC: failed to create new widgets %d\n",
+			ret);
+
+	return 0;
+}
+
+static int soc_tplg_pcm_dai_elems_load(struct soc_tplg *tplg,
+	struct snd_soc_tplg_hdr *hdr)
+{
+	struct snd_soc_tplg_pcm_dai *pcm_dai;
+	struct snd_soc_dobj *dobj;
+	int count = hdr->count;
+	int ret;
+
+	if (tplg->pass != SOC_TPLG_PASS_PCM_DAI)
+		return 0;
+
+	pcm_dai = (struct snd_soc_tplg_pcm_dai *)tplg->pos;
+
+	if (soc_tplg_check_elem_count(tplg,
+		sizeof(struct snd_soc_tplg_pcm_dai), count,
+		hdr->payload_size, "PCM DAI")) {
+		dev_err(tplg->dev, "ASoC: invalid count %d for PCM DAI elems\n",
+			count);
+		return -EINVAL;
+	}
+
+	dev_dbg(tplg->dev, "ASoC: adding %d PCM DAIs\n", count);
+	tplg->pos += sizeof(struct snd_soc_tplg_pcm_dai) * count;
+
+	dobj = kzalloc(sizeof(struct snd_soc_dobj), GFP_KERNEL);
+	if (dobj == NULL)
+		return -ENOMEM;
+
+	/* Call the platform driver call back to register the dais */
+	ret = soc_tplg_pcm_dai_load(tplg, pcm_dai, count);
+	if (ret < 0) {
+		dev_err(tplg->comp->dev, "ASoC: PCM DAI loading failed\n");
+		goto err;
+	}
+
+	dobj->type = get_dobj_type(hdr, NULL);
+	dobj->pcm_dai.count = count;
+	dobj->pcm_dai.pd = pcm_dai;
+	dobj->ops = tplg->ops;
+	dobj->index = tplg->index;
+	list_add(&dobj->list, &tplg->comp->dobj_list);
+	return 0;
+
+err:
+	kfree(dobj);
+	return ret;
+}
+
+static int soc_tplg_manifest_load(struct soc_tplg *tplg,
+	struct snd_soc_tplg_hdr *hdr)
+{
+	struct snd_soc_tplg_manifest *manifest;
+
+	if (tplg->pass != SOC_TPLG_PASS_MANIFEST)
+		return 0;
+
+	manifest = (struct snd_soc_tplg_manifest *)tplg->pos;
+	tplg->pos += sizeof(struct snd_soc_tplg_manifest);
+
+	if (tplg->comp && tplg->ops && tplg->ops->manifest)
+		return tplg->ops->manifest(tplg->comp, manifest);
+
+	dev_err(tplg->dev, "ASoC: Firmware manifest not supported\n");
+	return 0;
+}
+
+/* validate header magic, size and type */
+static int soc_valid_header(struct soc_tplg *tplg,
+	struct snd_soc_tplg_hdr *hdr)
+{
+	if (soc_tplg_get_hdr_offset(tplg) >= tplg->fw->size)
+		return 0;
+
+	/* big endian firmware objects not supported atm */
+	if (hdr->magic == cpu_to_be32(SND_SOC_TPLG_MAGIC)) {
+		dev_err(tplg->dev,
+			"ASoC: pass %d big endian not supported header got %x at offset 0x%lx size 0x%zx.\n",
+			tplg->pass, hdr->magic,
+			soc_tplg_get_hdr_offset(tplg), tplg->fw->size);
+		return -EINVAL;
+	}
+
+	if (hdr->magic != SND_SOC_TPLG_MAGIC) {
+		dev_err(tplg->dev,
+			"ASoC: pass %d does not have a valid header got %x at offset 0x%lx size 0x%zx.\n",
+			tplg->pass, hdr->magic,
+			soc_tplg_get_hdr_offset(tplg), tplg->fw->size);
+		return -EINVAL;
+	}
+
+	if (hdr->abi != SND_SOC_TPLG_ABI_VERSION) {
+		dev_err(tplg->dev,
+			"ASoC: pass %d invalid ABI version got 0x%x need 0x%x at offset 0x%lx size 0x%zx.\n",
+			tplg->pass, hdr->abi,
+			SND_SOC_TPLG_ABI_VERSION, soc_tplg_get_hdr_offset(tplg),
+			tplg->fw->size);
+		return -EINVAL;
+	}
+
+	if (hdr->payload_size == 0) {
+		dev_err(tplg->dev, "ASoC: header has 0 size at offset 0x%lx.\n",
+			soc_tplg_get_hdr_offset(tplg));
+		return -EINVAL;
+	}
+
+	if (tplg->pass == hdr->type)
+		dev_dbg(tplg->dev,
+			"ASoC: Got 0x%x bytes of type %d version %d vendor %d at pass %d\n",
+			hdr->payload_size, hdr->type, hdr->version,
+			hdr->vendor_type, tplg->pass);
+
+	return 1;
+}
+
+/* check header type and call appropriate handler */
+static int soc_tplg_load_header(struct soc_tplg *tplg,
+	struct snd_soc_tplg_hdr *hdr)
+{
+	tplg->pos = tplg->hdr_pos + sizeof(struct snd_soc_tplg_hdr);
+
+	/* check for matching ID */
+	if (hdr->index != tplg->req_index &&
+		hdr->index != SND_SOC_TPLG_INDEX_ALL)
+		return 0;
+
+	tplg->index = hdr->index;
+
+	switch (hdr->type) {
+	case SND_SOC_TPLG_TYPE_MIXER:
+	case SND_SOC_TPLG_TYPE_ENUM:
+	case SND_SOC_TPLG_TYPE_BYTES:
+		return soc_tplg_kcontrol_elems_load(tplg, hdr);
+	case SND_SOC_TPLG_TYPE_DAPM_GRAPH:
+		return soc_tplg_dapm_graph_elems_load(tplg, hdr);
+	case SND_SOC_TPLG_TYPE_DAPM_WIDGET:
+		return soc_tplg_dapm_widget_elems_load(tplg, hdr);
+	case SND_SOC_TPLG_TYPE_PCM:
+	case SND_SOC_TPLG_TYPE_DAI_LINK:
+	case SND_SOC_TPLG_TYPE_CODEC_LINK:
+		return soc_tplg_pcm_dai_elems_load(tplg, hdr);
+	case SND_SOC_TPLG_TYPE_MANIFEST:
+		return soc_tplg_manifest_load(tplg, hdr);
+	default:
+		/* bespoke vendor data object */
+		return soc_tplg_vendor_load(tplg, hdr);
+	}
+
+	return 0;
+}
+
+/* process the topology file headers */
+static int soc_tplg_process_headers(struct soc_tplg *tplg)
+{
+	struct snd_soc_tplg_hdr *hdr;
+	int ret;
+
+	tplg->pass = SOC_TPLG_PASS_START;
+
+	/* process the header types from start to end */
+	while (tplg->pass <= SOC_TPLG_PASS_END) {
+
+		tplg->hdr_pos = tplg->fw->data;
+		hdr = (struct snd_soc_tplg_hdr *)tplg->hdr_pos;
+
+		while (!soc_tplg_is_eof(tplg)) {
+
+			/* make sure header is valid before loading */
+			ret = soc_valid_header(tplg, hdr);
+			if (ret < 0)
+				return ret;
+			else if (ret == 0)
+				break;
+
+			/* load the header object */
+			ret = soc_tplg_load_header(tplg, hdr);
+			if (ret < 0)
+				return ret;
+
+			/* goto next header */
+			tplg->hdr_pos += hdr->payload_size +
+				sizeof(struct snd_soc_tplg_hdr);
+			hdr = (struct snd_soc_tplg_hdr *)tplg->hdr_pos;
+		}
+
+		/* next data type pass */
+		tplg->pass++;
+	}
+
+	/* signal DAPM we are complete */
+	ret = soc_tplg_dapm_complete(tplg);
+	if (ret < 0)
+		dev_err(tplg->dev,
+			"ASoC: failed to initialise DAPM from Firmware\n");
+
+	return ret;
+}
+
+static int soc_tplg_load(struct soc_tplg *tplg)
+{
+	int ret;
+
+	ret = soc_tplg_process_headers(tplg);
+	if (ret == 0)
+		soc_tplg_complete(tplg);
+
+	return ret;
+}
+
+/* load audio component topology from "firmware" file */
+int snd_soc_tplg_component_load(struct snd_soc_component *comp,
+	struct snd_soc_tplg_ops *ops, const struct firmware *fw, u32 id)
+{
+	struct soc_tplg tplg;
+
+	/* setup parsing context */
+	memset(&tplg, 0, sizeof(tplg));
+	tplg.fw = fw;
+	tplg.dev = comp->dev;
+	tplg.comp = comp;
+	tplg.ops = ops;
+	tplg.req_index = id;
+	tplg.io_ops = ops->io_ops;
+	tplg.io_ops_count = ops->io_ops_count;
+
+	return soc_tplg_load(&tplg);
+}
+EXPORT_SYMBOL_GPL(snd_soc_tplg_component_load);
+
+/* remove this dynamic widget */
+void snd_soc_tplg_widget_remove(struct snd_soc_dapm_widget *w)
+{
+	/* make sure we are a widget */
+	if (w->dobj.type != SND_SOC_DOBJ_WIDGET)
+		return;
+
+	remove_widget(w->dapm->component, &w->dobj, SOC_TPLG_PASS_WIDGET);
+}
+EXPORT_SYMBOL_GPL(snd_soc_tplg_widget_remove);
+
+/* remove all dynamic widgets from this DAPM context */
+void snd_soc_tplg_widget_remove_all(struct snd_soc_dapm_context *dapm,
+	u32 index)
+{
+	struct snd_soc_dapm_widget *w, *next_w;
+	struct snd_soc_dapm_path *p, *next_p;
+
+	list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
+
+		/* make sure we are a widget with correct context */
+		if (w->dobj.type != SND_SOC_DOBJ_WIDGET || w->dapm != dapm)
+			continue;
+
+		/* match ID */
+		if (w->dobj.index != index &&
+			w->dobj.index != SND_SOC_TPLG_INDEX_ALL)
+			continue;
+
+		list_del(&w->list);
+
+		/*
+		 * remove source and sink paths associated to this widget.
+		 * While removing the path, remove reference to it from both
+		 * source and sink widgets so that path is removed only once.
+		 */
+		list_for_each_entry_safe(p, next_p, &w->sources, list_sink) {
+			list_del(&p->list_sink);
+			list_del(&p->list_source);
+			list_del(&p->list);
+			kfree(p);
+		}
+		list_for_each_entry_safe(p, next_p, &w->sinks, list_source) {
+			list_del(&p->list_sink);
+			list_del(&p->list_source);
+			list_del(&p->list);
+			kfree(p);
+		}
+		/* check and free and dynamic widget kcontrols */
+		snd_soc_tplg_widget_remove(w);
+		kfree(w->kcontrols);
+		kfree(w->name);
+		kfree(w);
+	}
+}
+EXPORT_SYMBOL_GPL(snd_soc_tplg_widget_remove_all);
+
+/* remove dynamic controls from the component driver */
+int snd_soc_tplg_component_remove(struct snd_soc_component *comp, u32 index)
+{
+	struct snd_soc_dobj *dobj, *next_dobj;
+	int pass = SOC_TPLG_PASS_END;
+
+	/* process the header types from end to start */
+	while (pass >= SOC_TPLG_PASS_START) {
+
+		/* remove mixer controls */
+		list_for_each_entry_safe(dobj, next_dobj, &comp->dobj_list,
+			list) {
+
+			/* match index */
+			if (dobj->index != index &&
+				dobj->index != SND_SOC_TPLG_INDEX_ALL)
+				continue;
+
+			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);
+				break;
+			case SND_SOC_DOBJ_WIDGET:
+				remove_widget(comp, dobj, pass);
+				break;
+			case SND_SOC_DOBJ_PCM:
+			case SND_SOC_DOBJ_DAI_LINK:
+			case SND_SOC_DOBJ_CODEC_LINK:
+				remove_pcm_dai(comp, dobj, pass);
+				break;
+			default:
+				dev_err(comp->dev, "ASoC: invalid component type %d for removal\n",
+					dobj->type);
+				break;
+			}
+		}
+		pass--;
+	}
+
+	/* let caller know if FW can be freed when no objects are left */
+	return !list_empty(&comp->dobj_list);
+}
+EXPORT_SYMBOL_GPL(snd_soc_tplg_component_remove);