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-rw-r--r--include/sound/soc-topology.h168
1 files changed, 168 insertions, 0 deletions
diff --git a/include/sound/soc-topology.h b/include/sound/soc-topology.h
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+++ b/include/sound/soc-topology.h
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+/*
+ * 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.
+ */
+
+#ifndef __LINUX_SND_SOC_TPLG_H
+#define __LINUX_SND_SOC_TPLG_H
+
+#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 */
+ SND_SOC_DOBJ_MIXER,
+ SND_SOC_DOBJ_ENUM,
+ SND_SOC_DOBJ_BYTES,
+ SND_SOC_DOBJ_PCM,
+ SND_SOC_DOBJ_DAI_LINK,
+ SND_SOC_DOBJ_CODEC_LINK,
+ SND_SOC_DOBJ_WIDGET,
+};
+
+/* 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);
+};
+
+/*
+ * 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 *);
+
+ /* bespoke kcontrol handlers available for binding */
+ const struct snd_soc_tplg_kcontrol_ops *io_ops;
+ int io_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);
+
+#endif