1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Universal Interface for Intel High Definition Audio Codec 4 * 5 * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de> 6 */ 7 8 #ifndef __SOUND_HDA_CODEC_H 9 #define __SOUND_HDA_CODEC_H 10 11 #include <linux/refcount.h> 12 #include <linux/mod_devicetable.h> 13 #include <sound/info.h> 14 #include <sound/control.h> 15 #include <sound/pcm.h> 16 #include <sound/hwdep.h> 17 #include <sound/hdaudio.h> 18 #include <sound/hda_verbs.h> 19 #include <sound/hda_regmap.h> 20 21 /* 22 * Structures 23 */ 24 25 struct hda_bus; 26 struct hda_beep; 27 struct hda_codec; 28 struct hda_pcm; 29 struct hda_pcm_stream; 30 struct hda_codec_ops; 31 32 /* 33 * codec bus 34 * 35 * each controller needs to creata a hda_bus to assign the accessor. 36 * A hda_bus contains several codecs in the list codec_list. 37 */ 38 struct hda_bus { 39 struct hdac_bus core; 40 41 struct snd_card *card; 42 43 struct pci_dev *pci; 44 const char *modelname; 45 46 struct mutex prepare_mutex; 47 48 /* assigned PCMs */ 49 DECLARE_BITMAP(pcm_dev_bits, SNDRV_PCM_DEVICES); 50 51 /* misc op flags */ 52 unsigned int allow_bus_reset:1; /* allow bus reset at fatal error */ 53 /* status for codec/controller */ 54 unsigned int shutdown :1; /* being unloaded */ 55 unsigned int response_reset:1; /* controller was reset */ 56 unsigned int in_reset:1; /* during reset operation */ 57 unsigned int no_response_fallback:1; /* don't fallback at RIRB error */ 58 unsigned int bus_probing :1; /* during probing process */ 59 unsigned int keep_power:1; /* keep power up for notification */ 60 unsigned int jackpoll_in_suspend:1; /* keep jack polling during 61 * runtime suspend 62 */ 63 64 int primary_dig_out_type; /* primary digital out PCM type */ 65 unsigned int mixer_assigned; /* codec addr for mixer name */ 66 }; 67 68 /* from hdac_bus to hda_bus */ 69 #define to_hda_bus(bus) container_of(bus, struct hda_bus, core) 70 71 /* 72 * codec preset 73 */ 74 75 #define HDA_CODEC_ID_SKIP_PROBE 0x00000001 76 #define HDA_CODEC_ID_GENERIC_HDMI 0x00000101 77 #define HDA_CODEC_ID_GENERIC 0x00000201 78 79 #define HDA_CODEC_ID_REV_MODEL(_vid, _rev, _name, _model) \ 80 { .vendor_id = (_vid), .rev_id = (_rev), .name = (_name), \ 81 .api_version = HDA_DEV_LEGACY, .driver_data = (_model) } 82 #define HDA_CODEC_ID_MODEL(_vid, _name, _model) \ 83 HDA_CODEC_ID_REV_MODEL(_vid, 0, _name, _model) 84 #define HDA_CODEC_ID_REV(_vid, _rev, _name) \ 85 HDA_CODEC_ID_REV_MODEL(_vid, _rev, _name, 0) 86 #define HDA_CODEC_ID(_vid, _name) \ 87 HDA_CODEC_ID_REV(_vid, 0, _name) 88 89 struct hda_codec_driver { 90 struct hdac_driver core; 91 const struct hda_device_id *id; 92 const struct hda_codec_ops *ops; 93 }; 94 95 #define hda_codec_to_driver(codec) \ 96 container_of((codec)->core.dev.driver, struct hda_codec_driver, core.driver) 97 98 int __hda_codec_driver_register(struct hda_codec_driver *drv, const char *name, 99 struct module *owner); 100 #define hda_codec_driver_register(drv) \ 101 __hda_codec_driver_register(drv, KBUILD_MODNAME, THIS_MODULE) 102 void hda_codec_driver_unregister(struct hda_codec_driver *drv); 103 #define module_hda_codec_driver(drv) \ 104 module_driver(drv, hda_codec_driver_register, \ 105 hda_codec_driver_unregister) 106 107 /* ops for hda codec driver */ 108 struct hda_codec_ops { 109 int (*probe)(struct hda_codec *codec, const struct hda_device_id *id); 110 void (*remove)(struct hda_codec *codec); 111 int (*build_controls)(struct hda_codec *codec); 112 int (*build_pcms)(struct hda_codec *codec); 113 int (*init)(struct hda_codec *codec); 114 void (*unsol_event)(struct hda_codec *codec, unsigned int res); 115 void (*set_power_state)(struct hda_codec *codec, hda_nid_t fg, 116 unsigned int power_state); 117 int (*suspend)(struct hda_codec *codec); 118 int (*resume)(struct hda_codec *codec); 119 int (*check_power_status)(struct hda_codec *codec, hda_nid_t nid); 120 void (*stream_pm)(struct hda_codec *codec, hda_nid_t nid, bool on); 121 }; 122 123 /* PCM callbacks */ 124 struct hda_pcm_ops { 125 int (*open)(struct hda_pcm_stream *info, struct hda_codec *codec, 126 struct snd_pcm_substream *substream); 127 int (*close)(struct hda_pcm_stream *info, struct hda_codec *codec, 128 struct snd_pcm_substream *substream); 129 int (*prepare)(struct hda_pcm_stream *info, struct hda_codec *codec, 130 unsigned int stream_tag, unsigned int format, 131 struct snd_pcm_substream *substream); 132 int (*cleanup)(struct hda_pcm_stream *info, struct hda_codec *codec, 133 struct snd_pcm_substream *substream); 134 unsigned int (*get_delay)(struct hda_pcm_stream *info, 135 struct hda_codec *codec, 136 struct snd_pcm_substream *substream); 137 }; 138 139 /* PCM information for each substream */ 140 struct hda_pcm_stream { 141 unsigned int substreams; /* number of substreams, 0 = not exist*/ 142 unsigned int channels_min; /* min. number of channels */ 143 unsigned int channels_max; /* max. number of channels */ 144 hda_nid_t nid; /* default NID to query rates/formats/bps, or set up */ 145 u32 rates; /* supported rates */ 146 u64 formats; /* supported formats (SNDRV_PCM_FMTBIT_) */ 147 u32 subformats; /* for S32_LE format, SNDRV_PCM_SUBFMTBIT_* */ 148 unsigned int maxbps; /* supported max. bit per sample */ 149 const struct snd_pcm_chmap_elem *chmap; /* chmap to override */ 150 struct hda_pcm_ops ops; 151 }; 152 153 /* PCM types */ 154 enum { 155 HDA_PCM_TYPE_AUDIO, 156 HDA_PCM_TYPE_SPDIF, 157 HDA_PCM_TYPE_HDMI, 158 HDA_PCM_TYPE_MODEM, 159 HDA_PCM_NTYPES 160 }; 161 162 #define SNDRV_PCM_INVALID_DEVICE (-1) 163 /* for PCM creation */ 164 struct hda_pcm { 165 char *name; 166 struct hda_pcm_stream stream[2]; 167 unsigned int pcm_type; /* HDA_PCM_TYPE_XXX */ 168 int device; /* device number to assign */ 169 struct snd_pcm *pcm; /* assigned PCM instance */ 170 bool own_chmap; /* codec driver provides own channel maps */ 171 /* private: */ 172 struct hda_codec *codec; 173 struct list_head list; 174 unsigned int disconnected:1; 175 }; 176 177 /* codec information */ 178 struct hda_codec { 179 struct hdac_device core; 180 struct hda_bus *bus; 181 struct snd_card *card; 182 unsigned int addr; /* codec addr*/ 183 u32 probe_id; /* overridden id for probing */ 184 185 /* detected preset */ 186 const struct hda_device_id *preset; 187 const char *modelname; /* model name for preset */ 188 189 /* PCM to create, set by hda_codec_ops.build_pcms callback */ 190 struct list_head pcm_list_head; 191 refcount_t pcm_ref; 192 wait_queue_head_t remove_sleep; 193 194 /* codec specific info */ 195 void *spec; 196 197 /* beep device */ 198 struct hda_beep *beep; 199 unsigned int beep_mode; 200 bool beep_just_power_on; 201 202 /* widget capabilities cache */ 203 u32 *wcaps; 204 205 struct snd_array mixers; /* list of assigned mixer elements */ 206 struct snd_array nids; /* list of mapped mixer elements */ 207 208 struct list_head conn_list; /* linked-list of connection-list */ 209 210 struct mutex spdif_mutex; 211 struct mutex control_mutex; 212 struct snd_array spdif_out; 213 unsigned int spdif_in_enable; /* SPDIF input enable? */ 214 const hda_nid_t *follower_dig_outs; /* optional digital out follower widgets */ 215 struct snd_array init_pins; /* initial (BIOS) pin configurations */ 216 struct snd_array driver_pins; /* pin configs set by codec parser */ 217 struct snd_array cvt_setups; /* audio convert setups */ 218 219 struct mutex user_mutex; 220 #ifdef CONFIG_SND_HDA_RECONFIG 221 struct snd_array init_verbs; /* additional init verbs */ 222 struct snd_array hints; /* additional hints */ 223 struct snd_array user_pins; /* default pin configs to override */ 224 #endif 225 226 #ifdef CONFIG_SND_HDA_HWDEP 227 struct snd_hwdep *hwdep; /* assigned hwdep device */ 228 #endif 229 230 /* misc flags */ 231 unsigned int configured:1; /* codec was configured */ 232 unsigned int in_freeing:1; /* being released */ 233 unsigned int display_power_control:1; /* needs display power */ 234 unsigned int spdif_status_reset :1; /* needs to toggle SPDIF for each 235 * status change 236 * (e.g. Realtek codecs) 237 */ 238 unsigned int pin_amp_workaround:1; /* pin out-amp takes index 239 * (e.g. Conexant codecs) 240 */ 241 unsigned int single_adc_amp:1; /* adc in-amp takes no index 242 * (e.g. CX20549 codec) 243 */ 244 unsigned int no_sticky_stream:1; /* no sticky-PCM stream assignment */ 245 unsigned int pins_shutup:1; /* pins are shut up */ 246 unsigned int no_trigger_sense:1; /* don't trigger at pin-sensing */ 247 unsigned int no_jack_detect:1; /* Machine has no jack-detection */ 248 unsigned int inv_eapd:1; /* broken h/w: inverted EAPD control */ 249 unsigned int inv_jack_detect:1; /* broken h/w: inverted detection bit */ 250 unsigned int pcm_format_first:1; /* PCM format must be set first */ 251 unsigned int cached_write:1; /* write only to caches */ 252 unsigned int dp_mst:1; /* support DP1.2 Multi-stream transport */ 253 unsigned int dump_coef:1; /* dump processing coefs in codec proc file */ 254 unsigned int power_save_node:1; /* advanced PM for each widget */ 255 unsigned int auto_runtime_pm:1; /* enable automatic codec runtime pm */ 256 unsigned int force_pin_prefix:1; /* Add location prefix */ 257 unsigned int link_down_at_suspend:1; /* link down at runtime suspend */ 258 unsigned int relaxed_resume:1; /* don't resume forcibly for jack */ 259 unsigned int forced_resume:1; /* forced resume for jack */ 260 unsigned int no_stream_clean_at_suspend:1; /* do not clean streams at suspend */ 261 unsigned int ctl_dev_id:1; /* old control element id build behaviour */ 262 263 unsigned long power_on_acct; 264 unsigned long power_off_acct; 265 unsigned long power_jiffies; 266 267 /* filter the requested power state per nid */ 268 unsigned int (*power_filter)(struct hda_codec *codec, hda_nid_t nid, 269 unsigned int power_state); 270 271 /* codec-specific additional proc output */ 272 void (*proc_widget_hook)(struct snd_info_buffer *buffer, 273 struct hda_codec *codec, hda_nid_t nid); 274 275 /* jack detection */ 276 struct snd_array jacktbl; 277 unsigned long jackpoll_interval; /* In jiffies. Zero means no poll, rely on unsol events */ 278 struct delayed_work jackpoll_work; 279 280 int depop_delay; /* depop delay in ms, -1 for default delay time */ 281 282 /* fix-up list */ 283 int fixup_id; 284 const struct hda_fixup *fixup_list; 285 const char *fixup_name; 286 287 /* additional init verbs */ 288 struct snd_array verbs; 289 }; 290 291 #define dev_to_hda_codec(_dev) container_of(_dev, struct hda_codec, core.dev) 292 #define hda_codec_dev(_dev) (&(_dev)->core.dev) 293 294 #define hdac_to_hda_codec(_hdac) container_of(_hdac, struct hda_codec, core) 295 296 #define list_for_each_codec(c, bus) \ 297 list_for_each_entry(c, &(bus)->core.codec_list, core.list) 298 #define list_for_each_codec_safe(c, n, bus) \ 299 list_for_each_entry_safe(c, n, &(bus)->core.codec_list, core.list) 300 301 /* snd_hda_codec_read/write optional flags */ 302 #define HDA_RW_NO_RESPONSE_FALLBACK (1 << 0) 303 304 /* 305 * constructors 306 */ 307 __printf(3, 4) struct hda_codec * 308 snd_hda_codec_device_init(struct hda_bus *bus, unsigned int codec_addr, 309 const char *fmt, ...); 310 int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card, 311 unsigned int codec_addr, struct hda_codec **codecp); 312 int snd_hda_codec_device_new(struct hda_bus *bus, struct snd_card *card, 313 unsigned int codec_addr, struct hda_codec *codec, 314 bool snddev_managed); 315 int snd_hda_codec_configure(struct hda_codec *codec); 316 int snd_hda_codec_update_widgets(struct hda_codec *codec); 317 void snd_hda_codec_register(struct hda_codec *codec); 318 void snd_hda_codec_unregister(struct hda_codec *codec); 319 void snd_hda_codec_cleanup_for_unbind(struct hda_codec *codec); 320 321 /* 322 * low level functions 323 */ 324 static inline unsigned int 325 snd_hda_codec_read(struct hda_codec *codec, hda_nid_t nid, 326 int flags, 327 unsigned int verb, unsigned int parm) 328 { 329 return snd_hdac_codec_read(&codec->core, nid, flags, verb, parm); 330 } 331 332 static inline int 333 snd_hda_codec_write(struct hda_codec *codec, hda_nid_t nid, int flags, 334 unsigned int verb, unsigned int parm) 335 { 336 return snd_hdac_codec_write(&codec->core, nid, flags, verb, parm); 337 } 338 339 /* sync after write */ 340 static inline int 341 snd_hda_codec_write_sync(struct hda_codec *codec, hda_nid_t nid, int flags, 342 unsigned int verb, unsigned int parm) 343 { 344 /* use snd_hda_codec_read() for writing; 345 * the returned value is usually discarded 346 */ 347 return snd_hdac_codec_read(&codec->core, nid, flags, verb, parm); 348 } 349 350 #define snd_hda_param_read(codec, nid, param) \ 351 snd_hdac_read_parm(&(codec)->core, nid, param) 352 #define snd_hda_get_sub_nodes(codec, nid, start_nid) \ 353 snd_hdac_get_sub_nodes(&(codec)->core, nid, start_nid) 354 int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid, 355 hda_nid_t *conn_list, int max_conns); 356 static inline int 357 snd_hda_get_num_conns(struct hda_codec *codec, hda_nid_t nid) 358 { 359 return snd_hda_get_connections(codec, nid, NULL, 0); 360 } 361 362 #define snd_hda_get_raw_connections(codec, nid, list, max_conns) \ 363 snd_hdac_get_connections(&(codec)->core, nid, list, max_conns) 364 #define snd_hda_get_num_raw_conns(codec, nid) \ 365 snd_hdac_get_connections(&(codec)->core, nid, NULL, 0) 366 367 int snd_hda_get_conn_list(struct hda_codec *codec, hda_nid_t nid, 368 const hda_nid_t **listp); 369 int snd_hda_override_conn_list(struct hda_codec *codec, hda_nid_t nid, int nums, 370 const hda_nid_t *list); 371 int snd_hda_get_conn_index(struct hda_codec *codec, hda_nid_t mux, 372 hda_nid_t nid, int recursive); 373 unsigned int snd_hda_get_num_devices(struct hda_codec *codec, hda_nid_t nid); 374 unsigned int snd_hda_get_devices(struct hda_codec *codec, hda_nid_t nid, 375 u8 *dev_list, unsigned int max_devices); 376 int snd_hda_get_dev_select(struct hda_codec *codec, hda_nid_t nid); 377 int snd_hda_set_dev_select(struct hda_codec *codec, hda_nid_t nid, int dev_id); 378 379 struct hda_verb { 380 hda_nid_t nid; 381 u32 verb; 382 u32 param; 383 }; 384 385 void snd_hda_sequence_write(struct hda_codec *codec, 386 const struct hda_verb *seq); 387 388 /* cached write */ 389 static inline int 390 snd_hda_codec_write_cache(struct hda_codec *codec, hda_nid_t nid, 391 int flags, unsigned int verb, unsigned int parm) 392 { 393 return snd_hdac_regmap_write(&codec->core, nid, verb, parm); 394 } 395 396 /* the struct for codec->pin_configs */ 397 struct hda_pincfg { 398 hda_nid_t nid; 399 unsigned char ctrl; /* original pin control value */ 400 unsigned char target; /* target pin control value */ 401 unsigned int cfg; /* default configuration */ 402 }; 403 404 unsigned int snd_hda_codec_get_pincfg(struct hda_codec *codec, hda_nid_t nid); 405 int snd_hda_codec_set_pincfg(struct hda_codec *codec, hda_nid_t nid, 406 unsigned int cfg); 407 int snd_hda_add_pincfg(struct hda_codec *codec, struct snd_array *list, 408 hda_nid_t nid, unsigned int cfg); /* for hwdep */ 409 void snd_hda_shutup_pins(struct hda_codec *codec); 410 411 /* SPDIF controls */ 412 struct hda_spdif_out { 413 hda_nid_t nid; /* Converter nid values relate to */ 414 unsigned int status; /* IEC958 status bits */ 415 unsigned short ctls; /* SPDIF control bits */ 416 }; 417 struct hda_spdif_out *snd_hda_spdif_out_of_nid(struct hda_codec *codec, 418 hda_nid_t nid); 419 void snd_hda_spdif_ctls_unassign(struct hda_codec *codec, int idx); 420 void snd_hda_spdif_ctls_assign(struct hda_codec *codec, int idx, hda_nid_t nid); 421 422 /* 423 * Mixer 424 */ 425 int snd_hda_codec_build_controls(struct hda_codec *codec); 426 427 /* 428 * PCM 429 */ 430 int snd_hda_codec_parse_pcms(struct hda_codec *codec); 431 int snd_hda_codec_build_pcms(struct hda_codec *codec); 432 433 __printf(2, 3) 434 struct hda_pcm *snd_hda_codec_pcm_new(struct hda_codec *codec, 435 const char *fmt, ...); 436 437 void snd_hda_codec_cleanup_for_unbind(struct hda_codec *codec); 438 439 static inline void snd_hda_codec_pcm_get(struct hda_pcm *pcm) 440 { 441 refcount_inc(&pcm->codec->pcm_ref); 442 } 443 void snd_hda_codec_pcm_put(struct hda_pcm *pcm); 444 445 int snd_hda_codec_prepare(struct hda_codec *codec, 446 struct hda_pcm_stream *hinfo, 447 unsigned int stream, 448 unsigned int format, 449 struct snd_pcm_substream *substream); 450 void snd_hda_codec_cleanup(struct hda_codec *codec, 451 struct hda_pcm_stream *hinfo, 452 struct snd_pcm_substream *substream); 453 454 void snd_hda_codec_setup_stream(struct hda_codec *codec, hda_nid_t nid, 455 u32 stream_tag, 456 int channel_id, int format); 457 void __snd_hda_codec_cleanup_stream(struct hda_codec *codec, hda_nid_t nid, 458 int do_now); 459 #define snd_hda_codec_cleanup_stream(codec, nid) \ 460 __snd_hda_codec_cleanup_stream(codec, nid, 0) 461 462 #define snd_hda_query_supported_pcm(codec, nid, ratesp, fmtsp, subfmtp, bpsp) \ 463 snd_hdac_query_supported_pcm(&(codec)->core, nid, ratesp, fmtsp, subfmtp, bpsp) 464 #define snd_hda_is_supported_format(codec, nid, fmt) \ 465 snd_hdac_is_supported_format(&(codec)->core, nid, fmt) 466 467 extern const struct snd_pcm_chmap_elem snd_pcm_2_1_chmaps[]; 468 469 int snd_hda_attach_pcm_stream(struct hda_bus *_bus, struct hda_codec *codec, 470 struct hda_pcm *cpcm); 471 472 /* 473 * Misc 474 */ 475 void snd_hda_get_codec_name(struct hda_codec *codec, char *name, int namelen); 476 void snd_hda_codec_set_power_to_all(struct hda_codec *codec, hda_nid_t fg, 477 unsigned int power_state); 478 479 int snd_hda_lock_devices(struct hda_bus *bus); 480 void snd_hda_unlock_devices(struct hda_bus *bus); 481 void snd_hda_bus_reset(struct hda_bus *bus); 482 void snd_hda_bus_reset_codecs(struct hda_bus *bus); 483 484 void snd_hda_codec_set_gpio(struct hda_codec *codec, unsigned int mask, 485 unsigned int dir, unsigned int data, 486 unsigned int delay); 487 488 int snd_hda_codec_set_name(struct hda_codec *codec, const char *name); 489 490 /* 491 * power management 492 */ 493 extern const struct dev_pm_ops hda_codec_driver_pm; 494 495 static inline 496 int hda_call_check_power_status(struct hda_codec *codec, hda_nid_t nid) 497 { 498 struct hda_codec_driver *driver = hda_codec_to_driver(codec); 499 500 if (driver->ops && driver->ops->check_power_status) 501 return driver->ops->check_power_status(codec, nid); 502 return 0; 503 } 504 505 /* 506 * power saving 507 */ 508 #define snd_hda_power_up(codec) snd_hdac_power_up(&(codec)->core) 509 #define snd_hda_power_up_pm(codec) snd_hdac_power_up_pm(&(codec)->core) 510 #define snd_hda_power_down(codec) snd_hdac_power_down(&(codec)->core) 511 #define snd_hda_power_down_pm(codec) snd_hdac_power_down_pm(&(codec)->core) 512 void snd_hda_codec_set_power_save(struct hda_codec *codec, int delay); 513 void snd_hda_set_power_save(struct hda_bus *bus, int delay); 514 void snd_hda_update_power_acct(struct hda_codec *codec); 515 516 static inline bool hda_codec_need_resume(struct hda_codec *codec) 517 { 518 return !codec->relaxed_resume && codec->jacktbl.used; 519 } 520 521 /* 522 * PM with auto-cleanup: call like CLASS(snd_hda_power, pm)(codec) 523 * If the error handling is needed, refer pm.err. 524 */ 525 struct __hda_power_obj { 526 struct hda_codec *codec; 527 int err; 528 }; 529 530 static inline struct __hda_power_obj __snd_hda_power_up(struct hda_codec *codec) 531 { 532 struct __hda_power_obj T = { .codec = codec }; 533 T.err = snd_hda_power_up(codec); 534 return T; 535 } 536 537 static inline struct __hda_power_obj __snd_hda_power_up_pm(struct hda_codec *codec) 538 { 539 struct __hda_power_obj T = { .codec = codec }; 540 T.err = snd_hda_power_up_pm(codec); 541 return T; 542 } 543 544 DEFINE_CLASS(snd_hda_power, struct __hda_power_obj, 545 snd_hda_power_down((_T).codec), __snd_hda_power_up(codec), 546 struct hda_codec *codec) 547 DEFINE_CLASS(snd_hda_power_pm, struct __hda_power_obj, 548 snd_hda_power_down_pm((_T).codec), __snd_hda_power_up_pm(codec), 549 struct hda_codec *codec) 550 551 #ifdef CONFIG_SND_HDA_PATCH_LOADER 552 /* 553 * patch firmware 554 */ 555 int snd_hda_load_patch(struct hda_bus *bus, size_t size, const void *buf); 556 #endif 557 558 #ifdef CONFIG_SND_HDA_DSP_LOADER 559 int snd_hda_codec_load_dsp_prepare(struct hda_codec *codec, unsigned int format, 560 unsigned int size, 561 struct snd_dma_buffer *bufp); 562 void snd_hda_codec_load_dsp_trigger(struct hda_codec *codec, bool start); 563 void snd_hda_codec_load_dsp_cleanup(struct hda_codec *codec, 564 struct snd_dma_buffer *dmab); 565 #else 566 static inline int 567 snd_hda_codec_load_dsp_prepare(struct hda_codec *codec, unsigned int format, 568 unsigned int size, 569 struct snd_dma_buffer *bufp) 570 { 571 return -ENOSYS; 572 } 573 static inline void 574 snd_hda_codec_load_dsp_trigger(struct hda_codec *codec, bool start) {} 575 static inline void 576 snd_hda_codec_load_dsp_cleanup(struct hda_codec *codec, 577 struct snd_dma_buffer *dmab) {} 578 #endif 579 580 #endif /* __SOUND_HDA_CODEC_H */ 581