1 /* 2 * linux/sound/soc-topology.h -- ALSA SoC Firmware Controls and DAPM 3 * 4 * Copyright (C) 2012 Texas Instruments Inc. 5 * Copyright (C) 2015 Intel Corporation. 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 * 11 * Simple file API to load FW that includes mixers, coefficients, DAPM graphs, 12 * algorithms, equalisers, DAIs, widgets, FE caps, BE caps, codec link caps etc. 13 */ 14 15 #ifndef __LINUX_SND_SOC_TPLG_H 16 #define __LINUX_SND_SOC_TPLG_H 17 18 #include <sound/asoc.h> 19 #include <linux/list.h> 20 21 struct firmware; 22 struct snd_kcontrol; 23 struct snd_soc_tplg_pcm_be; 24 struct snd_ctl_elem_value; 25 struct snd_ctl_elem_info; 26 struct snd_soc_dapm_widget; 27 struct snd_soc_component; 28 struct snd_soc_tplg_pcm_fe; 29 struct snd_soc_dapm_context; 30 struct snd_soc_card; 31 32 /* object scan be loaded and unloaded in groups with identfying indexes */ 33 #define SND_SOC_TPLG_INDEX_ALL 0 /* ID that matches all FW objects */ 34 35 /* dynamic object type */ 36 enum snd_soc_dobj_type { 37 SND_SOC_DOBJ_NONE = 0, /* object is not dynamic */ 38 SND_SOC_DOBJ_MIXER, 39 SND_SOC_DOBJ_ENUM, 40 SND_SOC_DOBJ_BYTES, 41 SND_SOC_DOBJ_PCM, 42 SND_SOC_DOBJ_DAI_LINK, 43 SND_SOC_DOBJ_CODEC_LINK, 44 SND_SOC_DOBJ_WIDGET, 45 }; 46 47 /* dynamic control object */ 48 struct snd_soc_dobj_control { 49 struct snd_kcontrol *kcontrol; 50 char **dtexts; 51 unsigned long *dvalues; 52 }; 53 54 /* dynamic widget object */ 55 struct snd_soc_dobj_widget { 56 unsigned int kcontrol_type; /* kcontrol type: mixer, enum, bytes */ 57 }; 58 59 /* generic dynamic object - all dynamic objects belong to this struct */ 60 struct snd_soc_dobj { 61 enum snd_soc_dobj_type type; 62 unsigned int index; /* objects can belong in different groups */ 63 struct list_head list; 64 struct snd_soc_tplg_ops *ops; 65 union { 66 struct snd_soc_dobj_control control; 67 struct snd_soc_dobj_widget widget; 68 }; 69 void *private; /* core does not touch this */ 70 }; 71 72 /* 73 * Kcontrol operations - used to map handlers onto firmware based controls. 74 */ 75 struct snd_soc_tplg_kcontrol_ops { 76 u32 id; 77 int (*get)(struct snd_kcontrol *kcontrol, 78 struct snd_ctl_elem_value *ucontrol); 79 int (*put)(struct snd_kcontrol *kcontrol, 80 struct snd_ctl_elem_value *ucontrol); 81 int (*info)(struct snd_kcontrol *kcontrol, 82 struct snd_ctl_elem_info *uinfo); 83 }; 84 85 /* Bytes ext operations, for TLV byte controls */ 86 struct snd_soc_tplg_bytes_ext_ops { 87 u32 id; 88 int (*get)(struct snd_kcontrol *kcontrol, unsigned int __user *bytes, 89 unsigned int size); 90 int (*put)(struct snd_kcontrol *kcontrol, 91 const unsigned int __user *bytes, unsigned int size); 92 }; 93 94 /* 95 * DAPM widget event handlers - used to map handlers onto widgets. 96 */ 97 struct snd_soc_tplg_widget_events { 98 u16 type; 99 int (*event_handler)(struct snd_soc_dapm_widget *w, 100 struct snd_kcontrol *k, int event); 101 }; 102 103 /* 104 * Public API - Used by component drivers to load and unload dynamic objects 105 * and their resources. 106 */ 107 struct snd_soc_tplg_ops { 108 109 /* external kcontrol init - used for any driver specific init */ 110 int (*control_load)(struct snd_soc_component *, 111 struct snd_kcontrol_new *, struct snd_soc_tplg_ctl_hdr *); 112 int (*control_unload)(struct snd_soc_component *, 113 struct snd_soc_dobj *); 114 115 /* external widget init - used for any driver specific init */ 116 int (*widget_load)(struct snd_soc_component *, 117 struct snd_soc_dapm_widget *, 118 struct snd_soc_tplg_dapm_widget *); 119 int (*widget_unload)(struct snd_soc_component *, 120 struct snd_soc_dobj *); 121 122 /* FE DAI - used for any driver specific init */ 123 int (*dai_load)(struct snd_soc_component *, 124 struct snd_soc_dai_driver *dai_drv); 125 int (*dai_unload)(struct snd_soc_component *, 126 struct snd_soc_dobj *); 127 128 /* DAI link - used for any driver specific init */ 129 int (*link_load)(struct snd_soc_component *, 130 struct snd_soc_dai_link *link); 131 int (*link_unload)(struct snd_soc_component *, 132 struct snd_soc_dobj *); 133 134 /* callback to handle vendor bespoke data */ 135 int (*vendor_load)(struct snd_soc_component *, 136 struct snd_soc_tplg_hdr *); 137 int (*vendor_unload)(struct snd_soc_component *, 138 struct snd_soc_tplg_hdr *); 139 140 /* completion - called at completion of firmware loading */ 141 void (*complete)(struct snd_soc_component *); 142 143 /* manifest - optional to inform component of manifest */ 144 int (*manifest)(struct snd_soc_component *, 145 struct snd_soc_tplg_manifest *); 146 147 /* vendor specific kcontrol handlers available for binding */ 148 const struct snd_soc_tplg_kcontrol_ops *io_ops; 149 int io_ops_count; 150 151 /* vendor specific bytes ext handlers available for binding */ 152 const struct snd_soc_tplg_bytes_ext_ops *bytes_ext_ops; 153 int bytes_ext_ops_count; 154 }; 155 156 #ifdef CONFIG_SND_SOC_TOPOLOGY 157 158 /* gets a pointer to data from the firmware block header */ 159 static inline const void *snd_soc_tplg_get_data(struct snd_soc_tplg_hdr *hdr) 160 { 161 const void *ptr = hdr; 162 163 return ptr + sizeof(*hdr); 164 } 165 166 /* Dynamic Object loading and removal for component drivers */ 167 int snd_soc_tplg_component_load(struct snd_soc_component *comp, 168 struct snd_soc_tplg_ops *ops, const struct firmware *fw, 169 u32 index); 170 int snd_soc_tplg_component_remove(struct snd_soc_component *comp, u32 index); 171 172 /* Widget removal - widgets also removed wth component API */ 173 void snd_soc_tplg_widget_remove(struct snd_soc_dapm_widget *w); 174 void snd_soc_tplg_widget_remove_all(struct snd_soc_dapm_context *dapm, 175 u32 index); 176 177 /* Binds event handlers to dynamic widgets */ 178 int snd_soc_tplg_widget_bind_event(struct snd_soc_dapm_widget *w, 179 const struct snd_soc_tplg_widget_events *events, int num_events, 180 u16 event_type); 181 182 #else 183 184 static inline int snd_soc_tplg_component_remove(struct snd_soc_component *comp, 185 u32 index) 186 { 187 return 0; 188 } 189 190 #endif 191 192 #endif 193