blob: 086cd7ff6ddcbb457ee31277baf3fee143f0181d [file] [log] [blame]
* linux/sound/soc-topology.h -- ALSA SoC Firmware Controls and DAPM
* Copyright (C) 2012 Texas Instruments Inc.
* Copyright (C) 2015 Intel Corporation.
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
* Simple file API to load FW that includes mixers, coefficients, DAPM graphs,
* algorithms, equalisers, DAIs, widgets, FE caps, BE caps, codec link caps etc.
#include <sound/asoc.h>
#include <linux/list.h>
struct firmware;
struct snd_kcontrol;
struct snd_soc_tplg_pcm_be;
struct snd_ctl_elem_value;
struct snd_ctl_elem_info;
struct snd_soc_dapm_widget;
struct snd_soc_component;
struct snd_soc_tplg_pcm_fe;
struct snd_soc_dapm_context;
struct snd_soc_card;
/* object scan be loaded and unloaded in groups with identfying indexes */
#define SND_SOC_TPLG_INDEX_ALL 0 /* ID that matches all FW objects */
/* dynamic object type */
enum snd_soc_dobj_type {
SND_SOC_DOBJ_NONE = 0, /* object is not dynamic */
/* dynamic control object */
struct snd_soc_dobj_control {
struct snd_kcontrol *kcontrol;
char **dtexts;
unsigned long *dvalues;
/* dynamic widget object */
struct snd_soc_dobj_widget {
unsigned int kcontrol_enum:1; /* this widget is an enum kcontrol */
/* dynamic PCM DAI object */
struct snd_soc_dobj_pcm_dai {
struct snd_soc_tplg_pcm_dai *pd;
unsigned int count;
/* generic dynamic object - all dynamic objects belong to this struct */
struct snd_soc_dobj {
enum snd_soc_dobj_type type;
unsigned int index; /* objects can belong in different groups */
struct list_head list;
struct snd_soc_tplg_ops *ops;
union {
struct snd_soc_dobj_control control;
struct snd_soc_dobj_widget widget;
struct snd_soc_dobj_pcm_dai pcm_dai;
void *private; /* core does not touch this */
* Kcontrol operations - used to map handlers onto firmware based controls.
struct snd_soc_tplg_kcontrol_ops {
u32 id;
int (*get)(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
int (*put)(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
int (*info)(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo);
/* Bytes ext operations, for TLV byte controls */
struct snd_soc_tplg_bytes_ext_ops {
u32 id;
int (*get)(unsigned int __user *bytes, unsigned int size);
int (*put)(const unsigned int __user *bytes, unsigned int size);
* DAPM widget event handlers - used to map handlers onto widgets.
struct snd_soc_tplg_widget_events {
u16 type;
int (*event_handler)(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event);
* Public API - Used by component drivers to load and unload dynamic objects
* and their resources.
struct snd_soc_tplg_ops {
/* external kcontrol init - used for any driver specific init */
int (*control_load)(struct snd_soc_component *,
struct snd_kcontrol_new *, struct snd_soc_tplg_ctl_hdr *);
int (*control_unload)(struct snd_soc_component *,
struct snd_soc_dobj *);
/* external widget init - used for any driver specific init */
int (*widget_load)(struct snd_soc_component *,
struct snd_soc_dapm_widget *,
struct snd_soc_tplg_dapm_widget *);
int (*widget_unload)(struct snd_soc_component *,
struct snd_soc_dobj *);
/* FE - used for any driver specific init */
int (*pcm_dai_load)(struct snd_soc_component *,
struct snd_soc_tplg_pcm_dai *pcm_dai, int num_fe);
int (*pcm_dai_unload)(struct snd_soc_component *,
struct snd_soc_dobj *);
/* callback to handle vendor bespoke data */
int (*vendor_load)(struct snd_soc_component *,
struct snd_soc_tplg_hdr *);
int (*vendor_unload)(struct snd_soc_component *,
struct snd_soc_tplg_hdr *);
/* completion - called at completion of firmware loading */
void (*complete)(struct snd_soc_component *);
/* manifest - optional to inform component of manifest */
int (*manifest)(struct snd_soc_component *,
struct snd_soc_tplg_manifest *);
/* vendor specific kcontrol handlers available for binding */
const struct snd_soc_tplg_kcontrol_ops *io_ops;
int io_ops_count;
/* vendor specific bytes ext handlers available for binding */
const struct snd_soc_tplg_bytes_ext_ops *bytes_ext_ops;
int bytes_ext_ops_count;
/* gets a pointer to data from the firmware block header */
static inline const void *snd_soc_tplg_get_data(struct snd_soc_tplg_hdr *hdr)
const void *ptr = hdr;
return ptr + sizeof(*hdr);
/* Dynamic Object loading and removal for component drivers */
int snd_soc_tplg_component_load(struct snd_soc_component *comp,
struct snd_soc_tplg_ops *ops, const struct firmware *fw,
u32 index);
int snd_soc_tplg_component_remove(struct snd_soc_component *comp, u32 index);
/* Widget removal - widgets also removed wth component API */
void snd_soc_tplg_widget_remove(struct snd_soc_dapm_widget *w);
void snd_soc_tplg_widget_remove_all(struct snd_soc_dapm_context *dapm,
u32 index);
/* Binds event handlers to dynamic widgets */
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);
static inline int snd_soc_tplg_component_remove(struct snd_soc_component *comp,
u32 index)
return 0;