sound/pci/hda/hda_codec.h

   1 /*
   2  * Universal Interface for Intel High Definition Audio Codec
   3  *
   4  * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify it
   7  *  under the terms of the GNU General Public License as published by the Free
   8  *  Software Foundation; either version 2 of the License, or (at your option)
   9  *  any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful, but WITHOUT
  12  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  *  more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License along with
  17  *  this program; if not, write to the Free Software Foundation, Inc., 59
  18  *  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19  */
  20
  21 #ifndef __SOUND_HDA_CODEC_H
  22 #define __SOUND_HDA_CODEC_H
  23
  24 #include <sound/info.h>
  25 #include <sound/control.h>
  26 #include <sound/pcm.h>
  27 #include <sound/hwdep.h>
  28 #include <sound/hda_verbs.h>
  29
  30 /*
  31  * generic arrays
  32  */
  33 struct snd_array {
  34         unsigned int used;
  35         unsigned int alloced;
  36         unsigned int elem_size;
  37         unsigned int alloc_align;
  38         void *list;
  39 };
  40
  41 void *snd_array_new(struct snd_array *array);
  42 void snd_array_free(struct snd_array *array);
  43 static inline void snd_array_init(struct snd_array *array, unsigned int size,
  44                                   unsigned int align)
  45 {
  46         array->elem_size = size;
  47         array->alloc_align = align;
  48 }
  49
  50 static inline void *snd_array_elem(struct snd_array *array, unsigned int idx)
  51 {
  52         return array->list + idx * array->elem_size;
  53 }
  54
  55 static inline unsigned int snd_array_index(struct snd_array *array, void *ptr)
  56 {
  57         return (unsigned long)(ptr - array->list) / array->elem_size;
  58 }
  59
  60 /*
  61  * Structures
  62  */
  63
  64 struct hda_bus;
  65 struct hda_beep;
  66 struct hda_codec;
  67 struct hda_pcm;
  68 struct hda_pcm_stream;
  69 struct hda_bus_unsolicited;
  70
  71 /* NID type */
  72 typedef u16 hda_nid_t;
  73
  74 /* bus operators */
  75 struct hda_bus_ops {
  76         /* send a single command */
  77         int (*command)(struct hda_bus *bus, unsigned int cmd);
  78         /* get a response from the last command */
  79         unsigned int (*get_response)(struct hda_bus *bus, unsigned int addr);
  80         /* free the private data */
  81         void (*private_free)(struct hda_bus *);
  82         /* attach a PCM stream */
  83         int (*attach_pcm)(struct hda_bus *bus, struct hda_codec *codec,
  84                           struct hda_pcm *pcm);
  85         /* reset bus for retry verb */
  86         void (*bus_reset)(struct hda_bus *bus);
  87 #ifdef CONFIG_PM
  88         /* notify power-up/down from codec to controller */
  89         void (*pm_notify)(struct hda_bus *bus, bool power_up);
  90 #endif
  91 #ifdef CONFIG_SND_HDA_DSP_LOADER
  92         /* prepare DSP transfer */
  93         int (*load_dsp_prepare)(struct hda_bus *bus, unsigned int format,
  94                                 unsigned int byte_size,
  95                                 struct snd_dma_buffer *bufp);
  96         /* start/stop DSP transfer */
  97         void (*load_dsp_trigger)(struct hda_bus *bus, bool start);
  98         /* clean up DSP transfer */
  99         void (*load_dsp_cleanup)(struct hda_bus *bus,
 100                                  struct snd_dma_buffer *dmab);
 101 #endif
 102 };
 103
 104 /* template to pass to the bus constructor */
 105 struct hda_bus_template {
 106         void *private_data;
 107         struct pci_dev *pci;
 108         const char *modelname;
 109         int *power_save;
 110         struct hda_bus_ops ops;
 111 };
 112
 113 /*
 114  * codec bus
 115  *
 116  * each controller needs to creata a hda_bus to assign the accessor.
 117  * A hda_bus contains several codecs in the list codec_list.
 118  */
 119 struct hda_bus {
 120         struct snd_card *card;
 121
 122         /* copied from template */
 123         void *private_data;
 124         struct pci_dev *pci;
 125         const char *modelname;
 126         int *power_save;
 127         struct hda_bus_ops ops;
 128
 129         /* codec linked list */
 130         struct list_head codec_list;
 131         unsigned int num_codecs;
 132         /* link caddr -> codec */
 133         struct hda_codec *caddr_tbl[HDA_MAX_CODEC_ADDRESS + 1];
 134
 135         struct mutex cmd_mutex;
 136         struct mutex prepare_mutex;
 137
 138         /* unsolicited event queue */
 139         struct hda_bus_unsolicited *unsol;
 140         char workq_name[16];
 141         struct workqueue_struct *workq; /* common workqueue for codecs */
 142
 143         /* assigned PCMs */
 144         DECLARE_BITMAP(pcm_dev_bits, SNDRV_PCM_DEVICES);
 145
 146         /* misc op flags */
 147         unsigned int needs_damn_long_delay :1;
 148         unsigned int allow_bus_reset:1; /* allow bus reset at fatal error */
 149         unsigned int sync_write:1;      /* sync after verb write */
 150         /* status for codec/controller */
 151         unsigned int shutdown :1;       /* being unloaded */
 152         unsigned int rirb_error:1;      /* error in codec communication */
 153         unsigned int response_reset:1;  /* controller was reset */
 154         unsigned int in_reset:1;        /* during reset operation */
 155         unsigned int power_keep_link_on:1; /* don't power off HDA link */
 156         unsigned int no_response_fallback:1; /* don't fallback at RIRB error */
 157
 158         int primary_dig_out_type;       /* primary digital out PCM type */
 159 };
 160
 161 /*
 162  * codec preset
 163  *
 164  * Known codecs have the patch to build and set up the controls/PCMs
 165  * better than the generic parser.
 166  */
 167 struct hda_codec_preset {
 168         unsigned int id;
 169         unsigned int mask;
 170         unsigned int subs;
 171         unsigned int subs_mask;
 172         unsigned int rev;
 173         hda_nid_t afg, mfg;
 174         const char *name;
 175         int (*patch)(struct hda_codec *codec);
 176 };
 177
 178 struct hda_codec_preset_list {
 179         const struct hda_codec_preset *preset;
 180         struct module *owner;
 181         struct list_head list;
 182 };
 183
 184 /* initial hook */
 185 int snd_hda_add_codec_preset(struct hda_codec_preset_list *preset);
 186 int snd_hda_delete_codec_preset(struct hda_codec_preset_list *preset);
 187
 188 /* ops set by the preset patch */
 189 struct hda_codec_ops {
 190         int (*build_controls)(struct hda_codec *codec);
 191         int (*build_pcms)(struct hda_codec *codec);
 192         int (*init)(struct hda_codec *codec);
 193         void (*free)(struct hda_codec *codec);
 194         void (*unsol_event)(struct hda_codec *codec, unsigned int res);
 195         void (*set_power_state)(struct hda_codec *codec, hda_nid_t fg,
 196                                 unsigned int power_state);
 197 #ifdef CONFIG_PM
 198         int (*suspend)(struct hda_codec *codec);
 199         int (*resume)(struct hda_codec *codec);
 200         int (*check_power_status)(struct hda_codec *codec, hda_nid_t nid);
 201 #endif
 202         void (*reboot_notify)(struct hda_codec *codec);
 203 };
 204
 205 /* record for amp information cache */
 206 struct hda_cache_head {
 207         u32 key:31;             /* hash key */
 208         u32 dirty:1;
 209         u16 val;                /* assigned value */
 210         u16 next;
 211 };
 212
 213 struct hda_amp_info {
 214         struct hda_cache_head head;
 215         u32 amp_caps;           /* amp capabilities */
 216         u16 vol[2];             /* current volume & mute */
 217 };
 218
 219 struct hda_cache_rec {
 220         u16 hash[64];                   /* hash table for index */
 221         struct snd_array buf;           /* record entries */
 222 };
 223
 224 /* PCM callbacks */
 225 struct hda_pcm_ops {
 226         int (*open)(struct hda_pcm_stream *info, struct hda_codec *codec,
 227                     struct snd_pcm_substream *substream);
 228         int (*close)(struct hda_pcm_stream *info, struct hda_codec *codec,
 229                      struct snd_pcm_substream *substream);
 230         int (*prepare)(struct hda_pcm_stream *info, struct hda_codec *codec,
 231                        unsigned int stream_tag, unsigned int format,
 232                        struct snd_pcm_substream *substream);
 233         int (*cleanup)(struct hda_pcm_stream *info, struct hda_codec *codec,
 234                        struct snd_pcm_substream *substream);
 235         unsigned int (*get_delay)(struct hda_pcm_stream *info,
 236                                   struct hda_codec *codec,
 237                                   struct snd_pcm_substream *substream);
 238 };
 239
 240 /* PCM information for each substream */
 241 struct hda_pcm_stream {
 242         unsigned int substreams;        /* number of substreams, 0 = not exist*/
 243         unsigned int channels_min;      /* min. number of channels */
 244         unsigned int channels_max;      /* max. number of channels */
 245         hda_nid_t nid;  /* default NID to query rates/formats/bps, or set up */
 246         u32 rates;      /* supported rates */
 247         u64 formats;    /* supported formats (SNDRV_PCM_FMTBIT_) */
 248         unsigned int maxbps;    /* supported max. bit per sample */
 249         const struct snd_pcm_chmap_elem *chmap; /* chmap to override */
 250         struct hda_pcm_ops ops;
 251 };
 252
 253 /* PCM types */
 254 enum {
 255         HDA_PCM_TYPE_AUDIO,
 256         HDA_PCM_TYPE_SPDIF,
 257         HDA_PCM_TYPE_HDMI,
 258         HDA_PCM_TYPE_MODEM,
 259         HDA_PCM_NTYPES
 260 };
 261
 262 /* for PCM creation */
 263 struct hda_pcm {
 264         char *name;
 265         struct hda_pcm_stream stream[2];
 266         unsigned int pcm_type;  /* HDA_PCM_TYPE_XXX */
 267         int device;             /* device number to assign */
 268         struct snd_pcm *pcm;    /* assigned PCM instance */
 269         bool own_chmap;         /* codec driver provides own channel maps */
 270 };
 271
 272 /* codec information */
 273 struct hda_codec {
 274         struct device dev;
 275         struct hda_bus *bus;
 276         unsigned int addr;      /* codec addr*/
 277         struct list_head list;  /* list point */
 278
 279         hda_nid_t afg;  /* AFG node id */
 280         hda_nid_t mfg;  /* MFG node id */
 281
 282         /* ids */
 283         u8 afg_function_id;
 284         u8 mfg_function_id;
 285         u8 afg_unsol;
 286         u8 mfg_unsol;
 287         u32 vendor_id;
 288         u32 subsystem_id;
 289         u32 revision_id;
 290
 291         /* detected preset */
 292         const struct hda_codec_preset *preset;
 293         struct module *owner;
 294         int (*parser)(struct hda_codec *codec);
 295         const char *vendor_name;        /* codec vendor name */
 296         const char *chip_name;          /* codec chip name */
 297         const char *modelname;  /* model name for preset */
 298
 299         /* set by patch */
 300         struct hda_codec_ops patch_ops;
 301
 302         /* PCM to create, set by patch_ops.build_pcms callback */
 303         unsigned int num_pcms;
 304         struct hda_pcm *pcm_info;
 305
 306         /* codec specific info */
 307         void *spec;
 308
 309         /* beep device */
 310         struct hda_beep *beep;
 311         unsigned int beep_mode;
 312
 313         /* widget capabilities cache */
 314         unsigned int num_nodes;
 315         hda_nid_t start_nid;
 316         u32 *wcaps;
 317
 318         struct snd_array mixers;        /* list of assigned mixer elements */
 319         struct snd_array nids;          /* list of mapped mixer elements */
 320
 321         struct hda_cache_rec amp_cache; /* cache for amp access */
 322         struct hda_cache_rec cmd_cache; /* cache for other commands */
 323
 324         struct list_head conn_list;     /* linked-list of connection-list */
 325
 326         struct mutex spdif_mutex;
 327         struct mutex control_mutex;
 328         struct mutex hash_mutex;
 329         struct snd_array spdif_out;
 330         unsigned int spdif_in_enable;   /* SPDIF input enable? */
 331         const hda_nid_t *slave_dig_outs; /* optional digital out slave widgets */
 332         struct snd_array init_pins;     /* initial (BIOS) pin configurations */
 333         struct snd_array driver_pins;   /* pin configs set by codec parser */
 334         struct snd_array cvt_setups;    /* audio convert setups */
 335
 336         struct mutex user_mutex;
 337 #ifdef CONFIG_SND_HDA_RECONFIG
 338         struct snd_array init_verbs;    /* additional init verbs */
 339         struct snd_array hints;         /* additional hints */
 340         struct snd_array user_pins;     /* default pin configs to override */
 341 #endif
 342
 343 #ifdef CONFIG_SND_HDA_HWDEP
 344         struct snd_hwdep *hwdep;        /* assigned hwdep device */
 345 #endif
 346
 347         /* misc flags */
 348         unsigned int spdif_status_reset :1; /* needs to toggle SPDIF for each
 349                                              * status change
 350                                              * (e.g. Realtek codecs)
 351                                              */
 352         unsigned int pin_amp_workaround:1; /* pin out-amp takes index
 353                                             * (e.g. Conexant codecs)
 354                                             */
 355         unsigned int single_adc_amp:1; /* adc in-amp takes no index
 356                                         * (e.g. CX20549 codec)
 357                                         */
 358         unsigned int no_sticky_stream:1; /* no sticky-PCM stream assignment */
 359         unsigned int pins_shutup:1;     /* pins are shut up */
 360         unsigned int no_trigger_sense:1; /* don't trigger at pin-sensing */
 361         unsigned int no_jack_detect:1;  /* Machine has no jack-detection */
 362         unsigned int inv_eapd:1; /* broken h/w: inverted EAPD control */
 363         unsigned int inv_jack_detect:1; /* broken h/w: inverted detection bit */
 364         unsigned int pcm_format_first:1; /* PCM format must be set first */
 365         unsigned int epss:1;            /* supporting EPSS? */
 366         unsigned int cached_write:1;    /* write only to caches */
 367         unsigned int dp_mst:1; /* support DP1.2 Multi-stream transport */
 368         unsigned int dump_coef:1; /* dump processing coefs in codec proc file */
 369 #ifdef CONFIG_PM
 370         unsigned int power_on :1;       /* current (global) power-state */
 371         unsigned int d3_stop_clk:1;     /* support D3 operation without BCLK */
 372         unsigned int pm_up_notified:1;  /* PM notified to controller */
 373         unsigned int in_pm:1;           /* suspend/resume being performed */
 374         int power_transition;   /* power-state in transition */
 375         int power_count;        /* current (global) power refcount */
 376         struct delayed_work power_work; /* delayed task for powerdown */
 377         unsigned long power_on_acct;
 378         unsigned long power_off_acct;
 379         unsigned long power_jiffies;
 380         spinlock_t power_lock;
 381 #endif
 382
 383         /* filter the requested power state per nid */
 384         unsigned int (*power_filter)(struct hda_codec *codec, hda_nid_t nid,
 385                                      unsigned int power_state);
 386
 387         /* codec-specific additional proc output */
 388         void (*proc_widget_hook)(struct snd_info_buffer *buffer,
 389                                  struct hda_codec *codec, hda_nid_t nid);
 390
 391         /* jack detection */
 392         struct snd_array jacktbl;
 393         unsigned long jackpoll_interval; /* In jiffies. Zero means no poll, rely on unsol events */
 394         struct delayed_work jackpoll_work;
 395
 396 #ifdef CONFIG_SND_HDA_INPUT_JACK
 397         /* jack detection */
 398         struct snd_array jacks;
 399 #endif
 400
 401         int depop_delay; /* depop delay in ms, -1 for default delay time */
 402
 403         /* fix-up list */
 404         int fixup_id;
 405         const struct hda_fixup *fixup_list;
 406         const char *fixup_name;
 407
 408         /* additional init verbs */
 409         struct snd_array verbs;
 410 };
 411
 412 /* direction */
 413 enum {
 414         HDA_INPUT, HDA_OUTPUT
 415 };
 416
 417 /* snd_hda_codec_read/write optional flags */
 418 #define HDA_RW_NO_RESPONSE_FALLBACK     (1 << 0)
 419
 420 /*
 421  * constructors
 422  */
 423 int snd_hda_bus_new(struct snd_card *card, const struct hda_bus_template *temp,
 424                     struct hda_bus **busp);
 425 int snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr,
 426                       struct hda_codec **codecp);
 427 int snd_hda_codec_configure(struct hda_codec *codec);
 428 int snd_hda_codec_update_widgets(struct hda_codec *codec);
 429
 430 /*
 431  * low level functions
 432  */
 433 unsigned int snd_hda_codec_read(struct hda_codec *codec, hda_nid_t nid,
 434                                 int flags,
 435                                 unsigned int verb, unsigned int parm);
 436 int snd_hda_codec_write(struct hda_codec *codec, hda_nid_t nid, int flags,
 437                         unsigned int verb, unsigned int parm);
 438 #define snd_hda_param_read(codec, nid, param) \
 439         snd_hda_codec_read(codec, nid, 0, AC_VERB_PARAMETERS, param)
 440 int snd_hda_get_sub_nodes(struct hda_codec *codec, hda_nid_t nid,
 441                           hda_nid_t *start_id);
 442 int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid,
 443                             hda_nid_t *conn_list, int max_conns);
 444 static inline int
 445 snd_hda_get_num_conns(struct hda_codec *codec, hda_nid_t nid)
 446 {
 447         return snd_hda_get_connections(codec, nid, NULL, 0);
 448 }
 449 int snd_hda_get_num_raw_conns(struct hda_codec *codec, hda_nid_t nid);
 450 int snd_hda_get_raw_connections(struct hda_codec *codec, hda_nid_t nid,
 451                             hda_nid_t *conn_list, int max_conns);
 452 int snd_hda_get_conn_list(struct hda_codec *codec, hda_nid_t nid,
 453                           const hda_nid_t **listp);
 454 int snd_hda_override_conn_list(struct hda_codec *codec, hda_nid_t nid, int nums,
 455                           const hda_nid_t *list);
 456 int snd_hda_get_conn_index(struct hda_codec *codec, hda_nid_t mux,
 457                            hda_nid_t nid, int recursive);
 458 int snd_hda_get_devices(struct hda_codec *codec, hda_nid_t nid,
 459                         u8 *dev_list, int max_devices);
 460 int snd_hda_query_supported_pcm(struct hda_codec *codec, hda_nid_t nid,
 461                                 u32 *ratesp, u64 *formatsp, unsigned int *bpsp);
 462
 463 struct hda_verb {
 464         hda_nid_t nid;
 465         u32 verb;
 466         u32 param;
 467 };
 468
 469 void snd_hda_sequence_write(struct hda_codec *codec,
 470                             const struct hda_verb *seq);
 471
 472 /* unsolicited event */
 473 int snd_hda_queue_unsol_event(struct hda_bus *bus, u32 res, u32 res_ex);
 474
 475 /* cached write */
 476 int snd_hda_codec_write_cache(struct hda_codec *codec, hda_nid_t nid,
 477                               int flags, unsigned int verb, unsigned int parm);
 478 void snd_hda_sequence_write_cache(struct hda_codec *codec,
 479                                   const struct hda_verb *seq);
 480 int snd_hda_codec_update_cache(struct hda_codec *codec, hda_nid_t nid,
 481                               int flags, unsigned int verb, unsigned int parm);
 482 void snd_hda_codec_resume_cache(struct hda_codec *codec);
 483 /* both for cmd & amp caches */
 484 void snd_hda_codec_flush_cache(struct hda_codec *codec);
 485
 486 /* the struct for codec->pin_configs */
 487 struct hda_pincfg {
 488         hda_nid_t nid;
 489         unsigned char ctrl;     /* original pin control value */
 490         unsigned char target;   /* target pin control value */
 491         unsigned int cfg;       /* default configuration */
 492 };
 493
 494 unsigned int snd_hda_codec_get_pincfg(struct hda_codec *codec, hda_nid_t nid);
 495 int snd_hda_codec_set_pincfg(struct hda_codec *codec, hda_nid_t nid,
 496                              unsigned int cfg);
 497 int snd_hda_add_pincfg(struct hda_codec *codec, struct snd_array *list,
 498                        hda_nid_t nid, unsigned int cfg); /* for hwdep */
 499 void snd_hda_shutup_pins(struct hda_codec *codec);
 500
 501 /* SPDIF controls */
 502 struct hda_spdif_out {
 503         hda_nid_t nid;          /* Converter nid values relate to */
 504         unsigned int status;    /* IEC958 status bits */
 505         unsigned short ctls;    /* SPDIF control bits */
 506 };
 507 struct hda_spdif_out *snd_hda_spdif_out_of_nid(struct hda_codec *codec,
 508                                                hda_nid_t nid);
 509 void snd_hda_spdif_ctls_unassign(struct hda_codec *codec, int idx);
 510 void snd_hda_spdif_ctls_assign(struct hda_codec *codec, int idx, hda_nid_t nid);
 511
 512 /*
 513  * Mixer
 514  */
 515 int snd_hda_build_controls(struct hda_bus *bus);
 516 int snd_hda_codec_build_controls(struct hda_codec *codec);
 517
 518 /*
 519  * PCM
 520  */
 521 int snd_hda_build_pcms(struct hda_bus *bus);
 522 int snd_hda_codec_build_pcms(struct hda_codec *codec);
 523
 524 int snd_hda_codec_prepare(struct hda_codec *codec,
 525                           struct hda_pcm_stream *hinfo,
 526                           unsigned int stream,
 527                           unsigned int format,
 528                           struct snd_pcm_substream *substream);
 529 void snd_hda_codec_cleanup(struct hda_codec *codec,
 530                            struct hda_pcm_stream *hinfo,
 531                            struct snd_pcm_substream *substream);
 532
 533 void snd_hda_codec_setup_stream(struct hda_codec *codec, hda_nid_t nid,
 534                                 u32 stream_tag,
 535                                 int channel_id, int format);
 536 void __snd_hda_codec_cleanup_stream(struct hda_codec *codec, hda_nid_t nid,
 537                                     int do_now);
 538 #define snd_hda_codec_cleanup_stream(codec, nid) \
 539         __snd_hda_codec_cleanup_stream(codec, nid, 0)
 540 unsigned int snd_hda_calc_stream_format(struct hda_codec *codec,
 541                                         unsigned int rate,
 542                                         unsigned int channels,
 543                                         unsigned int format,
 544                                         unsigned int maxbps,
 545                                         unsigned short spdif_ctls);
 546 int snd_hda_is_supported_format(struct hda_codec *codec, hda_nid_t nid,
 547                                 unsigned int format);
 548
 549 extern const struct snd_pcm_chmap_elem snd_pcm_2_1_chmaps[];
 550
 551 /*
 552  * Misc
 553  */
 554 void snd_hda_get_codec_name(struct hda_codec *codec, char *name, int namelen);
 555 void snd_hda_bus_reboot_notify(struct hda_bus *bus);
 556 void snd_hda_codec_set_power_to_all(struct hda_codec *codec, hda_nid_t fg,
 557                                     unsigned int power_state);
 558
 559 int snd_hda_lock_devices(struct hda_bus *bus);
 560 void snd_hda_unlock_devices(struct hda_bus *bus);
 561
 562 /*
 563  * power management
 564  */
 565 #ifdef CONFIG_PM
 566 int snd_hda_suspend(struct hda_bus *bus);
 567 int snd_hda_resume(struct hda_bus *bus);
 568 #endif
 569
 570 static inline
 571 int hda_call_check_power_status(struct hda_codec *codec, hda_nid_t nid)
 572 {
 573 #ifdef CONFIG_PM
 574         if (codec->patch_ops.check_power_status)
 575                 return codec->patch_ops.check_power_status(codec, nid);
 576 #endif
 577         return 0;
 578 }
 579
 580 /*
 581  * get widget information
 582  */
 583 const char *snd_hda_get_jack_connectivity(u32 cfg);
 584 const char *snd_hda_get_jack_type(u32 cfg);
 585 const char *snd_hda_get_jack_location(u32 cfg);
 586
 587 /*
 588  * power saving
 589  */
 590 #ifdef CONFIG_PM
 591 void snd_hda_power_save(struct hda_codec *codec, int delta, bool d3wait);
 592 void snd_hda_update_power_acct(struct hda_codec *codec);
 593 #else
 594 static inline void snd_hda_power_save(struct hda_codec *codec, int delta,
 595                                       bool d3wait) {}
 596 #endif
 597
 598 /**
 599  * snd_hda_power_up - Power-up the codec
 600  * @codec: HD-audio codec
 601  *
 602  * Increment the power-up counter and power up the hardware really when
 603  * not turned on yet.
 604  */
 605 static inline void snd_hda_power_up(struct hda_codec *codec)
 606 {
 607         snd_hda_power_save(codec, 1, false);
 608 }
 609
 610 /**
 611  * snd_hda_power_up_d3wait - Power-up the codec after waiting for any pending
 612  *   D3 transition to complete.  This differs from snd_hda_power_up() when
 613  *   power_transition == -1.  snd_hda_power_up sees this case as a nop,
 614  *   snd_hda_power_up_d3wait waits for the D3 transition to complete then powers
 615  *   back up.
 616  * @codec: HD-audio codec
 617  *
 618  * Cancel any power down operation hapenning on the work queue, then power up.
 619  */
 620 static inline void snd_hda_power_up_d3wait(struct hda_codec *codec)
 621 {
 622         snd_hda_power_save(codec, 1, true);
 623 }
 624
 625 /**
 626  * snd_hda_power_down - Power-down the codec
 627  * @codec: HD-audio codec
 628  *
 629  * Decrement the power-up counter and schedules the power-off work if
 630  * the counter rearches to zero.
 631  */
 632 static inline void snd_hda_power_down(struct hda_codec *codec)
 633 {
 634         snd_hda_power_save(codec, -1, false);
 635 }
 636
 637 /**
 638  * snd_hda_power_sync - Synchronize the power-save status
 639  * @codec: HD-audio codec
 640  *
 641  * Synchronize the actual power state with the power account;
 642  * called when power_save parameter is changed
 643  */
 644 static inline void snd_hda_power_sync(struct hda_codec *codec)
 645 {
 646         snd_hda_power_save(codec, 0, false);
 647 }
 648
 649 #ifdef CONFIG_SND_HDA_PATCH_LOADER
 650 /*
 651  * patch firmware
 652  */
 653 int snd_hda_load_patch(struct hda_bus *bus, size_t size, const void *buf);
 654 #endif
 655
 656 #ifdef CONFIG_SND_HDA_DSP_LOADER
 657 static inline int
 658 snd_hda_codec_load_dsp_prepare(struct hda_codec *codec, unsigned int format,
 659                                 unsigned int size,
 660                                 struct snd_dma_buffer *bufp)
 661 {
 662         return codec->bus->ops.load_dsp_prepare(codec->bus, format, size, bufp);
 663 }
 664 static inline void
 665 snd_hda_codec_load_dsp_trigger(struct hda_codec *codec, bool start)
 666 {
 667         return codec->bus->ops.load_dsp_trigger(codec->bus, start);
 668 }
 669 static inline void
 670 snd_hda_codec_load_dsp_cleanup(struct hda_codec *codec,
 671                                 struct snd_dma_buffer *dmab)
 672 {
 673         return codec->bus->ops.load_dsp_cleanup(codec->bus, dmab);
 674 }
 675 #else
 676 static inline int
 677 snd_hda_codec_load_dsp_prepare(struct hda_codec *codec, unsigned int format,
 678                                 unsigned int size,
 679                                 struct snd_dma_buffer *bufp)
 680 {
 681         return -ENOSYS;
 682 }
 683 static inline void
 684 snd_hda_codec_load_dsp_trigger(struct hda_codec *codec, bool start) {}
 685 static inline void
 686 snd_hda_codec_load_dsp_cleanup(struct hda_codec *codec,
 687                                 struct snd_dma_buffer *dmab) {}
 688 #endif
 689
 690 #endif /* __SOUND_HDA_CODEC_H */