Release 4.7 sound/soc/soc-topology.c

/*
 * 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>
#include <sound/tlv.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_PCM_DAI		4

#define SOC_TPLG_PASS_GRAPH		5

#define SOC_TPLG_PASS_PINS		6


#define SOC_TPLG_PASS_START	SOC_TPLG_PASS_MANIFEST

#define SOC_TPLG_PASS_END	SOC_TPLG_PASS_PINS


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 */

	/* vendor specific kcontrol operations */
	
const struct snd_soc_tplg_kcontrol_ops *io_ops;
	
int io_ops_count;

	/* vendor specific bytes ext handlers, for TLV bytes controls */
	
const struct snd_soc_tplg_bytes_ext_ops *bytes_ext_ops;
	
int bytes_ext_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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
107
100.00%
1
100.00%
Total
107
100.00%
1
100.00%



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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
43
100.00%
1
100.00%
Total
43
100.00%
1
100.00%



static inline unsigned long soc_tplg_get_hdr_offset(struct soc_tplg *tplg)
{
	return (unsigned long)(tplg->hdr_pos - tplg->fw->data);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
30
100.00%
1
100.00%
Total
30
100.00%
1
100.00%



static inline unsigned long soc_tplg_get_offset(struct soc_tplg *tplg)
{
	return (unsigned long)(tplg->pos - tplg->fw->data);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
30
100.00%
1
100.00%
Total
30
100.00%
1
100.00%

/* 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, snd_soc_info_volsw},
	{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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
60
100.00%
1
100.00%
Total
60
100.00%
1
100.00%



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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
60
100.00%
1
100.00%
Total
60
100.00%
1
100.00%



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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
53
100.00%
1
100.00%
Total
53
100.00%
1
100.00%



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));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
54
100.00%
1
100.00%
Total
54
100.00%
1
100.00%



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));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
56
100.00%
1
100.00%
Total
56
100.00%
1
100.00%

/* 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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
108
100.00%
1
100.00%
Total
108
100.00%
1
100.00%

/* 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);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
35
100.00%
1
100.00%
Total
35
100.00%
1
100.00%

/* 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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
56
100.00%
1
100.00%
Total
56
100.00%
1
100.00%

/* pass DAI configurations to component driver for extra intialization */


static int soc_tplg_dai_load(struct soc_tplg *tplg,
	struct snd_soc_dai_driver *dai_drv)
{
	if (tplg->comp && tplg->ops && tplg->ops->dai_load)
		return tplg->ops->dai_load(tplg->comp, dai_drv);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
43
87.76%
1
50.00%
mengdong lin
mengdong lin
6
12.24%
1
50.00%
Total
49
100.00%
2
100.00%

/* pass link configurations to component driver for extra intialization */


static int soc_tplg_dai_link_load(struct soc_tplg *tplg,
	struct snd_soc_dai_link *link)
{
	if (tplg->comp && tplg->ops && tplg->ops->link_load)
		return tplg->ops->link_load(tplg->comp, link);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
mengdong lin
mengdong lin
49
100.00%
1
100.00%
Total
49
100.00%
1
100.00%

/* 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);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
38
100.00%
1
100.00%
Total
38
100.00%
1
100.00%

/* 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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
117
100.00%
1
100.00%
Total
117
100.00%
1
100.00%

/* 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);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
53
100.00%
1
100.00%
Total
53
100.00%
1
100.00%

/* 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);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
144
100.00%
1
100.00%
Total
144
100.00%
1
100.00%

/* 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);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
146
100.00%
1
100.00%
Total
146
100.00%
1
100.00%

/* 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);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
103
100.00%
1
100.00%
Total
103
100.00%
1
100.00%

/* 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 */
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
259
100.00%
1
100.00%
Total
259
100.00%
1
100.00%

/* remove DAI configurations */


static void remove_dai(struct snd_soc_component *comp,
	struct snd_soc_dobj *dobj, int pass)
{
	struct snd_soc_dai_driver *dai_drv =
		container_of(dobj, struct snd_soc_dai_driver, dobj);

	if (pass != SOC_TPLG_PASS_PCM_DAI)
		return;

	if (dobj->ops && dobj->ops->dai_unload)
		dobj->ops->dai_unload(comp, dobj);

	list_del(&dobj->list);
	kfree(dai_drv);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
58
75.32%
1
50.00%
mengdong lin
mengdong lin
19
24.68%
1
50.00%
Total
77
100.00%
2
100.00%

/* remove link configurations */


static void remove_link(struct snd_soc_component *comp,
	struct snd_soc_dobj *dobj, int pass)
{
	struct snd_soc_dai_link *link =
		container_of(dobj, struct snd_soc_dai_link, dobj);

	if (pass != SOC_TPLG_PASS_PCM_DAI)
		return;

	if (dobj->ops && dobj->ops->link_unload)
		dobj->ops->link_unload(comp, dobj);

	list_del(&dobj->list);
	snd_soc_remove_dai_link(comp->card, link);
	kfree(link);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
mengdong lin
mengdong lin
86
100.00%
1
100.00%
Total
86
100.00%
1
100.00%

/* 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 soc_tplg *tplg)
{
	const struct snd_soc_tplg_kcontrol_ops *ops;
	const struct snd_soc_tplg_bytes_ext_ops *ext_ops;
	int num_ops, i;

	if (hdr->ops.info == SND_SOC_TPLG_CTL_BYTES
		&& k->iface & SNDRV_CTL_ELEM_IFACE_MIXER
		&& k->access & SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE
		&& k->access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) {
		struct soc_bytes_ext *sbe;
		struct snd_soc_tplg_bytes_control *be;

		sbe = (struct soc_bytes_ext *)k->private_value;
		be = container_of(hdr, struct snd_soc_tplg_bytes_control, hdr);

		/* TLV bytes controls need standard kcontrol info handler,
                 * TLV callback and extended put/get handlers.
                 */
		k->info = snd_soc_bytes_info_ext;
		k->tlv.c = snd_soc_bytes_tlv_callback;

		ext_ops = tplg->bytes_ext_ops;
		num_ops = tplg->bytes_ext_ops_count;
		for (i = 0; i < num_ops; i++) {
			if (!sbe->put && ext_ops[i].id == be->ext_ops.put)
				sbe->put = ext_ops[i].put;
			if (!sbe->get && ext_ops[i].id == be->ext_ops.get)
				sbe->get = ext_ops[i].get;
		}

		if (sbe->put && sbe->get)
			return 0;
		else
			return -EINVAL;
	}

	/* try and map vendor specific kcontrol handlers first */
	ops = tplg->io_ops;
	num_ops = tplg->io_ops_count;
	for (i = 0; i < num_ops; i++) {

		if (k->put == NULL && ops[i].id == hdr->ops.put)
			k->put = ops[i].put;
		if (k->get == NULL && ops[i].id == hdr->ops.get)
			k->get = ops[i].get;
		if (k->info == NULL && ops[i].id == hdr->ops.info)
			k->info = ops[i].info;
	}

	/* vendor specific handlers found ? */
	if (k->put && k->get && k->info)
		return 0;

	/* none found so try standard kcontrol handlers */
	ops = io_ops;
	num_ops = ARRAY_SIZE(io_ops);
	for (i = 0; i < num_ops; i++) {

		if (k->put == NULL && ops[i].id == hdr->ops.put)
			k->put = ops[i].put;
		if (k->get == NULL && ops[i].id == hdr->ops.get)
			k->get = ops[i].get;
		if (k->info == NULL && ops[i].id == hdr->ops.info)
			k->info = ops[i].info;
	}

	/* standard handlers found ? */
	if (k->put && k->get && k->info)
		return 0;

	/* nothing to bind */
	return -EINVAL;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
282
55.08%
1
20.00%
mengdong lin
mengdong lin
229
44.73%
3
60.00%
omair mohammed abdullah
omair mohammed abdullah
1
0.20%
1
20.00%
Total
512
100.00%
5
100.00%

/* 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;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
79
100.00%
1
100.00%
Total
79
100.00%
1
100.00%


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;
}


Contributors
Person
Tokens
Prop
Commits
CommitProp
liam girdwood
liam girdwood
56
100.00%
1
100.00%
Total
56
100.00%
1
100.00%



static int soc_tplg_create_tlv_db_scale(struct soc_tplg *tplg,
	struct snd_kcontrol_new *kc, struct snd_soc_tplg_tlv_dbscale *scale)
{
	unsigned int item_len = 2 * sizeof(unsigned int);
	unsigned int *p;

	p = kzalloc(item_len + 2 * sizeof(unsigned int), GFP_KERNEL);
	if (!p)
		return -ENOMEM;

	p