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