sound/pci/hda/hda_local.h

   1 /*
   2  * Universal Interface for Intel High Definition Audio Codec
   3  *
   4  * Local helper functions
   5  *
   6  * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
   7  *
   8  *  This program is free software; you can redistribute it and/or modify it
   9  *  under the terms of the GNU General Public License as published by the Free
  10  *  Software Foundation; either version 2 of the License, or (at your option)
  11  *  any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful, but WITHOUT
  14  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  16  *  more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License along with
  19  *  this program; if not, write to the Free Software Foundation, Inc., 59
  20  *  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21  */
  22
  23 #ifndef __SOUND_HDA_LOCAL_H
  24 #define __SOUND_HDA_LOCAL_H
  25
  26 /*
  27  * for mixer controls
  28  */
  29 #define HDA_COMPOSE_AMP_VAL(nid,chs,idx,dir) \
  30         ((nid) | ((chs)<<16) | ((dir)<<18) | ((idx)<<19))
  31 /* mono volume with index (index=0,1,...) (channel=1,2) */
  32 #define HDA_CODEC_VOLUME_MONO_IDX(xname, xcidx, nid, channel, xindex, direction) \
  33         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xcidx,  \
  34           .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | \
  35                     SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
  36                     SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK, \
  37           .info = snd_hda_mixer_amp_volume_info, \
  38           .get = snd_hda_mixer_amp_volume_get, \
  39           .put = snd_hda_mixer_amp_volume_put, \
  40           .tlv = { .c = snd_hda_mixer_amp_tlv },                \
  41           .private_value = HDA_COMPOSE_AMP_VAL(nid, channel, xindex, direction) }
  42 /* stereo volume with index */
  43 #define HDA_CODEC_VOLUME_IDX(xname, xcidx, nid, xindex, direction) \
  44         HDA_CODEC_VOLUME_MONO_IDX(xname, xcidx, nid, 3, xindex, direction)
  45 /* mono volume */
  46 #define HDA_CODEC_VOLUME_MONO(xname, nid, channel, xindex, direction) \
  47         HDA_CODEC_VOLUME_MONO_IDX(xname, 0, nid, channel, xindex, direction)
  48 /* stereo volume */
  49 #define HDA_CODEC_VOLUME(xname, nid, xindex, direction) \
  50         HDA_CODEC_VOLUME_MONO(xname, nid, 3, xindex, direction)
  51 /* mono mute switch with index (index=0,1,...) (channel=1,2) */
  52 #define HDA_CODEC_MUTE_MONO_IDX(xname, xcidx, nid, channel, xindex, direction) \
  53         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xcidx, \
  54           .info = snd_hda_mixer_amp_switch_info, \
  55           .get = snd_hda_mixer_amp_switch_get, \
  56           .put = snd_hda_mixer_amp_switch_put, \
  57           .private_value = HDA_COMPOSE_AMP_VAL(nid, channel, xindex, direction) }
  58 /* stereo mute switch with index */
  59 #define HDA_CODEC_MUTE_IDX(xname, xcidx, nid, xindex, direction) \
  60         HDA_CODEC_MUTE_MONO_IDX(xname, xcidx, nid, 3, xindex, direction)
  61 /* mono mute switch */
  62 #define HDA_CODEC_MUTE_MONO(xname, nid, channel, xindex, direction) \
  63         HDA_CODEC_MUTE_MONO_IDX(xname, 0, nid, channel, xindex, direction)
  64 /* stereo mute switch */
  65 #define HDA_CODEC_MUTE(xname, nid, xindex, direction) \
  66         HDA_CODEC_MUTE_MONO(xname, nid, 3, xindex, direction)
  67
  68 int snd_hda_mixer_amp_volume_info(struct snd_kcontrol *kcontrol,
  69                                   struct snd_ctl_elem_info *uinfo);
  70 int snd_hda_mixer_amp_volume_get(struct snd_kcontrol *kcontrol,
  71                                  struct snd_ctl_elem_value *ucontrol);
  72 int snd_hda_mixer_amp_volume_put(struct snd_kcontrol *kcontrol,
  73                                  struct snd_ctl_elem_value *ucontrol);
  74 int snd_hda_mixer_amp_tlv(struct snd_kcontrol *kcontrol, int op_flag,
  75                           unsigned int size, unsigned int __user *tlv);
  76 int snd_hda_mixer_amp_switch_info(struct snd_kcontrol *kcontrol,
  77                                   struct snd_ctl_elem_info *uinfo);
  78 int snd_hda_mixer_amp_switch_get(struct snd_kcontrol *kcontrol,
  79                                  struct snd_ctl_elem_value *ucontrol);
  80 int snd_hda_mixer_amp_switch_put(struct snd_kcontrol *kcontrol,
  81                                  struct snd_ctl_elem_value *ucontrol);
  82 /* lowlevel accessor with caching; use carefully */
  83 int snd_hda_codec_amp_read(struct hda_codec *codec, hda_nid_t nid, int ch,
  84                            int direction, int index);
  85 int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch,
  86                              int direction, int idx, int mask, int val);
  87 int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid,
  88                              int dir, int idx, int mask, int val);
  89 #ifdef SND_HDA_NEEDS_RESUME
  90 void snd_hda_codec_resume_amp(struct hda_codec *codec);
  91 #endif
  92
  93 void snd_hda_set_vmaster_tlv(struct hda_codec *codec, hda_nid_t nid, int dir,
  94                              unsigned int *tlv);
  95 struct snd_kcontrol *snd_hda_find_mixer_ctl(struct hda_codec *codec,
  96                                             const char *name);
  97 int snd_hda_add_vmaster(struct hda_codec *codec, char *name,
  98                         unsigned int *tlv, const char **slaves);
  99 void snd_hda_codec_reset(struct hda_codec *codec);
 100 int snd_hda_codec_configure(struct hda_codec *codec);
 101
 102 /* amp value bits */
 103 #define HDA_AMP_MUTE    0x80
 104 #define HDA_AMP_UNMUTE  0x00
 105 #define HDA_AMP_VOLMASK 0x7f
 106
 107 /* mono switch binding multiple inputs */
 108 #define HDA_BIND_MUTE_MONO(xname, nid, channel, indices, direction) \
 109         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = 0,  \
 110           .info = snd_hda_mixer_amp_switch_info, \
 111           .get = snd_hda_mixer_bind_switch_get, \
 112           .put = snd_hda_mixer_bind_switch_put, \
 113           .private_value = HDA_COMPOSE_AMP_VAL(nid, channel, indices, direction) }
 114
 115 /* stereo switch binding multiple inputs */
 116 #define HDA_BIND_MUTE(xname,nid,indices,dir) \
 117         HDA_BIND_MUTE_MONO(xname,nid,3,indices,dir)
 118
 119 int snd_hda_mixer_bind_switch_get(struct snd_kcontrol *kcontrol,
 120                                   struct snd_ctl_elem_value *ucontrol);
 121 int snd_hda_mixer_bind_switch_put(struct snd_kcontrol *kcontrol,
 122                                   struct snd_ctl_elem_value *ucontrol);
 123
 124 /* more generic bound controls */
 125 struct hda_ctl_ops {
 126         snd_kcontrol_info_t *info;
 127         snd_kcontrol_get_t *get;
 128         snd_kcontrol_put_t *put;
 129         snd_kcontrol_tlv_rw_t *tlv;
 130 };
 131
 132 extern struct hda_ctl_ops snd_hda_bind_vol;     /* for bind-volume with TLV */
 133 extern struct hda_ctl_ops snd_hda_bind_sw;      /* for bind-switch */
 134
 135 struct hda_bind_ctls {
 136         struct hda_ctl_ops *ops;
 137         long values[];
 138 };
 139
 140 int snd_hda_mixer_bind_ctls_info(struct snd_kcontrol *kcontrol,
 141                                  struct snd_ctl_elem_info *uinfo);
 142 int snd_hda_mixer_bind_ctls_get(struct snd_kcontrol *kcontrol,
 143                                 struct snd_ctl_elem_value *ucontrol);
 144 int snd_hda_mixer_bind_ctls_put(struct snd_kcontrol *kcontrol,
 145                                 struct snd_ctl_elem_value *ucontrol);
 146 int snd_hda_mixer_bind_tlv(struct snd_kcontrol *kcontrol, int op_flag,
 147                            unsigned int size, unsigned int __user *tlv);
 148
 149 #define HDA_BIND_VOL(xname, bindrec) \
 150         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
 151           .name = xname, \
 152           .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |\
 153                           SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 154                           SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK,\
 155           .info = snd_hda_mixer_bind_ctls_info,\
 156           .get =  snd_hda_mixer_bind_ctls_get,\
 157           .put = snd_hda_mixer_bind_ctls_put,\
 158           .tlv = { .c = snd_hda_mixer_bind_tlv },\
 159           .private_value = (long) (bindrec) }
 160 #define HDA_BIND_SW(xname, bindrec) \
 161         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,\
 162           .name = xname, \
 163           .info = snd_hda_mixer_bind_ctls_info,\
 164           .get =  snd_hda_mixer_bind_ctls_get,\
 165           .put = snd_hda_mixer_bind_ctls_put,\
 166           .private_value = (long) (bindrec) }
 167
 168 /*
 169  * SPDIF I/O
 170  */
 171 int snd_hda_create_spdif_out_ctls(struct hda_codec *codec, hda_nid_t nid);
 172 int snd_hda_create_spdif_in_ctls(struct hda_codec *codec, hda_nid_t nid);
 173
 174 /*
 175  * input MUX helper
 176  */
 177 #define HDA_MAX_NUM_INPUTS      16
 178 struct hda_input_mux_item {
 179         const char *label;
 180         unsigned int index;
 181 };
 182 struct hda_input_mux {
 183         unsigned int num_items;
 184         struct hda_input_mux_item items[HDA_MAX_NUM_INPUTS];
 185 };
 186
 187 int snd_hda_input_mux_info(const struct hda_input_mux *imux,
 188                            struct snd_ctl_elem_info *uinfo);
 189 int snd_hda_input_mux_put(struct hda_codec *codec,
 190                           const struct hda_input_mux *imux,
 191                           struct snd_ctl_elem_value *ucontrol, hda_nid_t nid,
 192                           unsigned int *cur_val);
 193
 194 /*
 195  * Channel mode helper
 196  */
 197 struct hda_channel_mode {
 198         int channels;
 199         const struct hda_verb *sequence;
 200 };
 201
 202 int snd_hda_ch_mode_info(struct hda_codec *codec,
 203                          struct snd_ctl_elem_info *uinfo,
 204                          const struct hda_channel_mode *chmode,
 205                          int num_chmodes);
 206 int snd_hda_ch_mode_get(struct hda_codec *codec,
 207                         struct snd_ctl_elem_value *ucontrol,
 208                         const struct hda_channel_mode *chmode,
 209                         int num_chmodes,
 210                         int max_channels);
 211 int snd_hda_ch_mode_put(struct hda_codec *codec,
 212                         struct snd_ctl_elem_value *ucontrol,
 213                         const struct hda_channel_mode *chmode,
 214                         int num_chmodes,
 215                         int *max_channelsp);
 216
 217 /*
 218  * Multi-channel / digital-out PCM helper
 219  */
 220
 221 enum { HDA_FRONT, HDA_REAR, HDA_CLFE, HDA_SIDE }; /* index for dac_nidx */
 222 enum { HDA_DIG_NONE, HDA_DIG_EXCLUSIVE, HDA_DIG_ANALOG_DUP }; /* dig_out_used */
 223
 224 struct hda_multi_out {
 225         int num_dacs;           /* # of DACs, must be more than 1 */
 226         hda_nid_t *dac_nids;    /* DAC list */
 227         hda_nid_t hp_nid;       /* optional DAC for HP, 0 when not exists */
 228         hda_nid_t extra_out_nid[3];     /* optional DACs, 0 when not exists */
 229         hda_nid_t dig_out_nid;  /* digital out audio widget */
 230         int max_channels;       /* currently supported analog channels */
 231         int dig_out_used;       /* current usage of digital out (HDA_DIG_XXX) */
 232         int no_share_stream;    /* don't share a stream with multiple pins */
 233         int share_spdif;        /* share SPDIF pin */
 234         /* PCM information for both analog and SPDIF DACs */
 235         unsigned int analog_rates;
 236         unsigned int analog_maxbps;
 237         u64 analog_formats;
 238         unsigned int spdif_rates;
 239         unsigned int spdif_maxbps;
 240         u64 spdif_formats;
 241 };
 242
 243 int snd_hda_create_spdif_share_sw(struct hda_codec *codec,
 244                                   struct hda_multi_out *mout);
 245 int snd_hda_multi_out_dig_open(struct hda_codec *codec,
 246                                struct hda_multi_out *mout);
 247 int snd_hda_multi_out_dig_close(struct hda_codec *codec,
 248                                 struct hda_multi_out *mout);
 249 int snd_hda_multi_out_dig_prepare(struct hda_codec *codec,
 250                                   struct hda_multi_out *mout,
 251                                   unsigned int stream_tag,
 252                                   unsigned int format,
 253                                   struct snd_pcm_substream *substream);
 254 int snd_hda_multi_out_analog_open(struct hda_codec *codec,
 255                                   struct hda_multi_out *mout,
 256                                   struct snd_pcm_substream *substream,
 257                                   struct hda_pcm_stream *hinfo);
 258 int snd_hda_multi_out_analog_prepare(struct hda_codec *codec,
 259                                      struct hda_multi_out *mout,
 260                                      unsigned int stream_tag,
 261                                      unsigned int format,
 262                                      struct snd_pcm_substream *substream);
 263 int snd_hda_multi_out_analog_cleanup(struct hda_codec *codec,
 264                                      struct hda_multi_out *mout);
 265
 266 /*
 267  * generic codec parser
 268  */
 269 #ifdef CONFIG_SND_HDA_GENERIC
 270 int snd_hda_parse_generic_codec(struct hda_codec *codec);
 271 #else
 272 static inline int snd_hda_parse_generic_codec(struct hda_codec *codec)
 273 {
 274         return -ENODEV;
 275 }
 276 #endif
 277
 278 /*
 279  * generic proc interface
 280  */
 281 #ifdef CONFIG_PROC_FS
 282 int snd_hda_codec_proc_new(struct hda_codec *codec);
 283 #else
 284 static inline int snd_hda_codec_proc_new(struct hda_codec *codec) { return 0; }
 285 #endif
 286
 287 #define SND_PRINT_RATES_ADVISED_BUFSIZE 80
 288 void snd_print_pcm_rates(int pcm, char *buf, int buflen);
 289
 290 #define SND_PRINT_BITS_ADVISED_BUFSIZE  16
 291 void snd_print_pcm_bits(int pcm, char *buf, int buflen);
 292
 293 /*
 294  * Misc
 295  */
 296 int snd_hda_check_board_config(struct hda_codec *codec, int num_configs,
 297                                const char **modelnames,
 298                                const struct snd_pci_quirk *pci_list);
 299 int snd_hda_check_board_codec_sid_config(struct hda_codec *codec,
 300                                int num_configs, const char **models,
 301                                const struct snd_pci_quirk *tbl);
 302 int snd_hda_add_new_ctls(struct hda_codec *codec,
 303                          struct snd_kcontrol_new *knew);
 304
 305 /*
 306  * unsolicited event handler
 307  */
 308
 309 #define HDA_UNSOL_QUEUE_SIZE    64
 310
 311 struct hda_bus_unsolicited {
 312         /* ring buffer */
 313         u32 queue[HDA_UNSOL_QUEUE_SIZE * 2];
 314         unsigned int rp, wp;
 315
 316         /* workqueue */
 317         struct work_struct work;
 318         struct hda_bus *bus;
 319 };
 320
 321 /*
 322  * Helper for automatic ping configuration
 323  */
 324
 325 enum {
 326         AUTO_PIN_MIC,
 327         AUTO_PIN_FRONT_MIC,
 328         AUTO_PIN_LINE,
 329         AUTO_PIN_FRONT_LINE,
 330         AUTO_PIN_CD,
 331         AUTO_PIN_AUX,
 332         AUTO_PIN_LAST
 333 };
 334
 335 enum {
 336         AUTO_PIN_LINE_OUT,
 337         AUTO_PIN_SPEAKER_OUT,
 338         AUTO_PIN_HP_OUT
 339 };
 340
 341 extern const char *auto_pin_cfg_labels[AUTO_PIN_LAST];
 342
 343 #define AUTO_CFG_MAX_OUTS       5
 344
 345 struct auto_pin_cfg {
 346         int line_outs;
 347         /* sorted in the order of Front/Surr/CLFE/Side */
 348         hda_nid_t line_out_pins[AUTO_CFG_MAX_OUTS];
 349         int speaker_outs;
 350         hda_nid_t speaker_pins[AUTO_CFG_MAX_OUTS];
 351         int hp_outs;
 352         int line_out_type;      /* AUTO_PIN_XXX_OUT */
 353         hda_nid_t hp_pins[AUTO_CFG_MAX_OUTS];
 354         hda_nid_t input_pins[AUTO_PIN_LAST];
 355         hda_nid_t dig_out_pin;
 356         hda_nid_t dig_in_pin;
 357         hda_nid_t mono_out_pin;
 358 };
 359
 360 #define get_defcfg_connect(cfg) \
 361         ((cfg & AC_DEFCFG_PORT_CONN) >> AC_DEFCFG_PORT_CONN_SHIFT)
 362 #define get_defcfg_association(cfg) \
 363         ((cfg & AC_DEFCFG_DEF_ASSOC) >> AC_DEFCFG_ASSOC_SHIFT)
 364 #define get_defcfg_location(cfg) \
 365         ((cfg & AC_DEFCFG_LOCATION) >> AC_DEFCFG_LOCATION_SHIFT)
 366 #define get_defcfg_sequence(cfg) \
 367         (cfg & AC_DEFCFG_SEQUENCE)
 368 #define get_defcfg_device(cfg) \
 369         ((cfg & AC_DEFCFG_DEVICE) >> AC_DEFCFG_DEVICE_SHIFT)
 370
 371 int snd_hda_parse_pin_def_config(struct hda_codec *codec,
 372                                  struct auto_pin_cfg *cfg,
 373                                  hda_nid_t *ignore_nids);
 374
 375 /* amp values */
 376 #define AMP_IN_MUTE(idx)        (0x7080 | ((idx)<<8))
 377 #define AMP_IN_UNMUTE(idx)      (0x7000 | ((idx)<<8))
 378 #define AMP_OUT_MUTE            0xb080
 379 #define AMP_OUT_UNMUTE          0xb000
 380 #define AMP_OUT_ZERO            0xb000
 381 /* pinctl values */
 382 #define PIN_IN                  (AC_PINCTL_IN_EN)
 383 #define PIN_VREFHIZ             (AC_PINCTL_IN_EN | AC_PINCTL_VREF_HIZ)
 384 #define PIN_VREF50              (AC_PINCTL_IN_EN | AC_PINCTL_VREF_50)
 385 #define PIN_VREFGRD             (AC_PINCTL_IN_EN | AC_PINCTL_VREF_GRD)
 386 #define PIN_VREF80              (AC_PINCTL_IN_EN | AC_PINCTL_VREF_80)
 387 #define PIN_VREF100             (AC_PINCTL_IN_EN | AC_PINCTL_VREF_100)
 388 #define PIN_OUT                 (AC_PINCTL_OUT_EN)
 389 #define PIN_HP                  (AC_PINCTL_OUT_EN | AC_PINCTL_HP_EN)
 390 #define PIN_HP_AMP              (AC_PINCTL_HP_EN)
 391
 392 /*
 393  * get widget capabilities
 394  */
 395 static inline u32 get_wcaps(struct hda_codec *codec, hda_nid_t nid)
 396 {
 397         if (nid < codec->start_nid ||
 398             nid >= codec->start_nid + codec->num_nodes)
 399                 return 0;
 400         return codec->wcaps[nid - codec->start_nid];
 401 }
 402
 403 u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction);
 404 int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir,
 405                               unsigned int caps);
 406
 407 int snd_hda_ctl_add(struct hda_codec *codec, struct snd_kcontrol *kctl);
 408 void snd_hda_ctls_clear(struct hda_codec *codec);
 409
 410 /*
 411  * hwdep interface
 412  */
 413 #ifdef CONFIG_SND_HDA_HWDEP
 414 int snd_hda_create_hwdep(struct hda_codec *codec);
 415 #else
 416 static inline int snd_hda_create_hwdep(struct hda_codec *codec) { return 0; }
 417 #endif
 418
 419 #ifdef CONFIG_SND_HDA_RECONFIG
 420 int snd_hda_hwdep_add_sysfs(struct hda_codec *codec);
 421 #else
 422 static inline int snd_hda_hwdep_add_sysfs(struct hda_codec *codec)
 423 {
 424         return 0;
 425 }
 426 #endif
 427
 428 /*
 429  * power-management
 430  */
 431
 432 #ifdef CONFIG_SND_HDA_POWER_SAVE
 433 void snd_hda_schedule_power_save(struct hda_codec *codec);
 434
 435 struct hda_amp_list {
 436         hda_nid_t nid;
 437         unsigned char dir;
 438         unsigned char idx;
 439 };
 440
 441 struct hda_loopback_check {
 442         struct hda_amp_list *amplist;
 443         int power_on;
 444 };
 445
 446 int snd_hda_check_amp_list_power(struct hda_codec *codec,
 447                                  struct hda_loopback_check *check,
 448                                  hda_nid_t nid);
 449 #endif /* CONFIG_SND_HDA_POWER_SAVE */
 450
 451 /*
 452  * AMP control callbacks
 453  */
 454 /* retrieve parameters from private_value */
 455 #define get_amp_nid(kc)         ((kc)->private_value & 0xffff)
 456 #define get_amp_channels(kc)    (((kc)->private_value >> 16) & 0x3)
 457 #define get_amp_direction(kc)   (((kc)->private_value >> 18) & 0x1)
 458 #define get_amp_index(kc)       (((kc)->private_value >> 19) & 0xf)
 459
 460 /*
 461  * CEA Short Audio Descriptor data
 462  */
 463 struct cea_sad {
 464         int     channels;
 465         int     format;         /* (format == 0) indicates invalid SAD */
 466         int     rates;
 467         int     sample_bits;    /* for LPCM */
 468         int     max_bitrate;    /* for AC3...ATRAC */
 469         int     profile;        /* for WMAPRO */
 470 };
 471
 472 #define ELD_FIXED_BYTES 20
 473 #define ELD_MAX_MNL     16
 474 #define ELD_MAX_SAD     16
 475
 476 /*
 477  * ELD: EDID Like Data
 478  */
 479 struct hdmi_eld {
 480         int     eld_size;
 481         int     baseline_len;
 482         int     eld_ver;        /* (eld_ver == 0) indicates invalid ELD */
 483         int     cea_edid_ver;
 484         char    monitor_name[ELD_MAX_MNL + 1];
 485         int     manufacture_id;
 486         int     product_id;
 487         u64     port_id;
 488         int     support_hdcp;
 489         int     support_ai;
 490         int     conn_type;
 491         int     aud_synch_delay;
 492         int     spk_alloc;
 493         int     sad_count;
 494         struct cea_sad sad[ELD_MAX_SAD];
 495 #ifdef CONFIG_PROC_FS
 496         struct snd_info_entry *proc_entry;
 497 #endif
 498 };
 499
 500 int snd_hdmi_get_eld_size(struct hda_codec *codec, hda_nid_t nid);
 501 int snd_hdmi_get_eld(struct hdmi_eld *, struct hda_codec *, hda_nid_t);
 502 void snd_hdmi_show_eld(struct hdmi_eld *eld);
 503
 504 #ifdef CONFIG_PROC_FS
 505 int snd_hda_eld_proc_new(struct hda_codec *codec, struct hdmi_eld *eld);
 506 void snd_hda_eld_proc_free(struct hda_codec *codec, struct hdmi_eld *eld);
 507 #else
 508 static inline int snd_hda_eld_proc_new(struct hda_codec *codec,
 509                                        struct hdmi_eld *eld)
 510 {
 511         return 0;
 512 }
 513 static inline void snd_hda_eld_proc_free(struct hda_codec *codec,
 514                                          struct hdmi_eld *eld)
 515 {
 516 }
 517 #endif
 518
 519 #define SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE 80
 520 void snd_print_channel_allocation(int spk_alloc, char *buf, int buflen);
 521
 522 #endif /* __SOUND_HDA_LOCAL_H */