sound/pci/hda/patch_intelhdmi.c

   1 /*
   2  *
   3  *  patch_intelhdmi.c - Patch for Intel HDMI codecs
   4  *
   5  *  Copyright(c) 2008 Intel Corporation. All rights reserved.
   6  *
   7  *  Authors:
   8  *                      Jiang Zhe <zhe.jiang@intel.com>
   9  *                      Wu Fengguang <wfg@linux.intel.com>
  10  *
  11  *  Maintained by:
  12  *                      Wu Fengguang <wfg@linux.intel.com>
  13  *
  14  *  This program is free software; you can redistribute it and/or modify it
  15  *  under the terms of the GNU General Public License as published by the Free
  16  *  Software Foundation; either version 2 of the License, or (at your option)
  17  *  any later version.
  18  *
  19  *  This program is distributed in the hope that it will be useful, but
  20  *  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  21  *  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  22  *  for more details.
  23  *
  24  *  You should have received a copy of the GNU General Public License
  25  *  along with this program; if not, write to the Free Software Foundation,
  26  *  Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  27  */
  28
  29 #include <linux/init.h>
  30 #include <linux/delay.h>
  31 #include <linux/slab.h>
  32 #include <sound/core.h>
  33 #include "hda_codec.h"
  34 #include "hda_local.h"
  35
  36 #define CVT_NID         0x02    /* audio converter */
  37 #define PIN_NID         0x03    /* HDMI output pin */
  38
  39 #define INTEL_HDMI_EVENT_TAG            0x08
  40
  41 struct intel_hdmi_spec {
  42         struct hda_multi_out multiout;
  43         struct hda_pcm pcm_rec;
  44         struct hdmi_eld sink_eld;
  45 };
  46
  47 static struct hda_verb pinout_enable_verb[] = {
  48         {PIN_NID, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT},
  49         {} /* terminator */
  50 };
  51
  52 static struct hda_verb pinout_disable_verb[] = {
  53         {PIN_NID, AC_VERB_SET_PIN_WIDGET_CONTROL, 0x00},
  54         {}
  55 };
  56
  57 static struct hda_verb unsolicited_response_verb[] = {
  58         {PIN_NID, AC_VERB_SET_UNSOLICITED_ENABLE, AC_USRSP_EN |
  59                                                   INTEL_HDMI_EVENT_TAG},
  60         {}
  61 };
  62
  63 static struct hda_verb def_chan_map[] = {
  64         {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x00},
  65         {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x11},
  66         {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x22},
  67         {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x33},
  68         {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x44},
  69         {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x55},
  70         {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x66},
  71         {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x77},
  72         {}
  73 };
  74
  75
  76 struct hdmi_audio_infoframe {
  77         u8 type; /* 0x84 */
  78         u8 ver;  /* 0x01 */
  79         u8 len;  /* 0x0a */
  80
  81         u8 checksum;    /* PB0 */
  82         u8 CC02_CT47;   /* CC in bits 0:2, CT in 4:7 */
  83         u8 SS01_SF24;
  84         u8 CXT04;
  85         u8 CA;
  86         u8 LFEPBL01_LSV36_DM_INH7;
  87         u8 reserved[5]; /* PB6 - PB10 */
  88 };
  89
  90 /*
  91  * CEA speaker placement:
  92  *
  93  *        FLH       FCH        FRH
  94  *  FLW    FL  FLC   FC   FRC   FR   FRW
  95  *
  96  *                                  LFE
  97  *                     TC
  98  *
  99  *          RL  RLC   RC   RRC   RR
 100  *
 101  * The Left/Right Surround channel _notions_ LS/RS in SMPTE 320M corresponds to
 102  * CEA RL/RR; The SMPTE channel _assignment_ C/LFE is swapped to CEA LFE/FC.
 103  */
 104 enum cea_speaker_placement {
 105         FL  = (1 <<  0),        /* Front Left           */
 106         FC  = (1 <<  1),        /* Front Center         */
 107         FR  = (1 <<  2),        /* Front Right          */
 108         FLC = (1 <<  3),        /* Front Left Center    */
 109         FRC = (1 <<  4),        /* Front Right Center   */
 110         RL  = (1 <<  5),        /* Rear Left            */
 111         RC  = (1 <<  6),        /* Rear Center          */
 112         RR  = (1 <<  7),        /* Rear Right           */
 113         RLC = (1 <<  8),        /* Rear Left Center     */
 114         RRC = (1 <<  9),        /* Rear Right Center    */
 115         LFE = (1 << 10),        /* Low Frequency Effect */
 116         FLW = (1 << 11),        /* Front Left Wide      */
 117         FRW = (1 << 12),        /* Front Right Wide     */
 118         FLH = (1 << 13),        /* Front Left High      */
 119         FCH = (1 << 14),        /* Front Center High    */
 120         FRH = (1 << 15),        /* Front Right High     */
 121         TC  = (1 << 16),        /* Top Center           */
 122 };
 123
 124 /*
 125  * ELD SA bits in the CEA Speaker Allocation data block
 126  */
 127 static int eld_speaker_allocation_bits[] = {
 128         [0] = FL | FR,
 129         [1] = LFE,
 130         [2] = FC,
 131         [3] = RL | RR,
 132         [4] = RC,
 133         [5] = FLC | FRC,
 134         [6] = RLC | RRC,
 135         /* the following are not defined in ELD yet */
 136         [7] = FLW | FRW,
 137         [8] = FLH | FRH,
 138         [9] = TC,
 139         [10] = FCH,
 140 };
 141
 142 struct cea_channel_speaker_allocation {
 143         int ca_index;
 144         int speakers[8];
 145
 146         /* derived values, just for convenience */
 147         int channels;
 148         int spk_mask;
 149 };
 150
 151 /*
 152  * This is an ordered list!
 153  *
 154  * The preceding ones have better chances to be selected by
 155  * hdmi_setup_channel_allocation().
 156  */
 157 static struct cea_channel_speaker_allocation channel_allocations[] = {
 158 /*                        channel:   8     7    6    5    4     3    2    1  */
 159 { .ca_index = 0x00,  .speakers = {   0,    0,   0,   0,   0,    0,  FR,  FL } },
 160                                  /* 2.1 */
 161 { .ca_index = 0x01,  .speakers = {   0,    0,   0,   0,   0,  LFE,  FR,  FL } },
 162                                  /* Dolby Surround */
 163 { .ca_index = 0x02,  .speakers = {   0,    0,   0,   0,  FC,    0,  FR,  FL } },
 164 { .ca_index = 0x03,  .speakers = {   0,    0,   0,   0,  FC,  LFE,  FR,  FL } },
 165 { .ca_index = 0x04,  .speakers = {   0,    0,   0,  RC,   0,    0,  FR,  FL } },
 166 { .ca_index = 0x05,  .speakers = {   0,    0,   0,  RC,   0,  LFE,  FR,  FL } },
 167 { .ca_index = 0x06,  .speakers = {   0,    0,   0,  RC,  FC,    0,  FR,  FL } },
 168 { .ca_index = 0x07,  .speakers = {   0,    0,   0,  RC,  FC,  LFE,  FR,  FL } },
 169 { .ca_index = 0x08,  .speakers = {   0,    0,  RR,  RL,   0,    0,  FR,  FL } },
 170 { .ca_index = 0x09,  .speakers = {   0,    0,  RR,  RL,   0,  LFE,  FR,  FL } },
 171 { .ca_index = 0x0a,  .speakers = {   0,    0,  RR,  RL,  FC,    0,  FR,  FL } },
 172                                  /* 5.1 */
 173 { .ca_index = 0x0b,  .speakers = {   0,    0,  RR,  RL,  FC,  LFE,  FR,  FL } },
 174 { .ca_index = 0x0c,  .speakers = {   0,   RC,  RR,  RL,   0,    0,  FR,  FL } },
 175 { .ca_index = 0x0d,  .speakers = {   0,   RC,  RR,  RL,   0,  LFE,  FR,  FL } },
 176 { .ca_index = 0x0e,  .speakers = {   0,   RC,  RR,  RL,  FC,    0,  FR,  FL } },
 177                                  /* 6.1 */
 178 { .ca_index = 0x0f,  .speakers = {   0,   RC,  RR,  RL,  FC,  LFE,  FR,  FL } },
 179 { .ca_index = 0x10,  .speakers = { RRC,  RLC,  RR,  RL,   0,    0,  FR,  FL } },
 180 { .ca_index = 0x11,  .speakers = { RRC,  RLC,  RR,  RL,   0,  LFE,  FR,  FL } },
 181 { .ca_index = 0x12,  .speakers = { RRC,  RLC,  RR,  RL,  FC,    0,  FR,  FL } },
 182                                  /* 7.1 */
 183 { .ca_index = 0x13,  .speakers = { RRC,  RLC,  RR,  RL,  FC,  LFE,  FR,  FL } },
 184 { .ca_index = 0x14,  .speakers = { FRC,  FLC,   0,   0,   0,    0,  FR,  FL } },
 185 { .ca_index = 0x15,  .speakers = { FRC,  FLC,   0,   0,   0,  LFE,  FR,  FL } },
 186 { .ca_index = 0x16,  .speakers = { FRC,  FLC,   0,   0,  FC,    0,  FR,  FL } },
 187 { .ca_index = 0x17,  .speakers = { FRC,  FLC,   0,   0,  FC,  LFE,  FR,  FL } },
 188 { .ca_index = 0x18,  .speakers = { FRC,  FLC,   0,  RC,   0,    0,  FR,  FL } },
 189 { .ca_index = 0x19,  .speakers = { FRC,  FLC,   0,  RC,   0,  LFE,  FR,  FL } },
 190 { .ca_index = 0x1a,  .speakers = { FRC,  FLC,   0,  RC,  FC,    0,  FR,  FL } },
 191 { .ca_index = 0x1b,  .speakers = { FRC,  FLC,   0,  RC,  FC,  LFE,  FR,  FL } },
 192 { .ca_index = 0x1c,  .speakers = { FRC,  FLC,  RR,  RL,   0,    0,  FR,  FL } },
 193 { .ca_index = 0x1d,  .speakers = { FRC,  FLC,  RR,  RL,   0,  LFE,  FR,  FL } },
 194 { .ca_index = 0x1e,  .speakers = { FRC,  FLC,  RR,  RL,  FC,    0,  FR,  FL } },
 195 { .ca_index = 0x1f,  .speakers = { FRC,  FLC,  RR,  RL,  FC,  LFE,  FR,  FL } },
 196 { .ca_index = 0x20,  .speakers = {   0,  FCH,  RR,  RL,  FC,    0,  FR,  FL } },
 197 { .ca_index = 0x21,  .speakers = {   0,  FCH,  RR,  RL,  FC,  LFE,  FR,  FL } },
 198 { .ca_index = 0x22,  .speakers = {  TC,    0,  RR,  RL,  FC,    0,  FR,  FL } },
 199 { .ca_index = 0x23,  .speakers = {  TC,    0,  RR,  RL,  FC,  LFE,  FR,  FL } },
 200 { .ca_index = 0x24,  .speakers = { FRH,  FLH,  RR,  RL,   0,    0,  FR,  FL } },
 201 { .ca_index = 0x25,  .speakers = { FRH,  FLH,  RR,  RL,   0,  LFE,  FR,  FL } },
 202 { .ca_index = 0x26,  .speakers = { FRW,  FLW,  RR,  RL,   0,    0,  FR,  FL } },
 203 { .ca_index = 0x27,  .speakers = { FRW,  FLW,  RR,  RL,   0,  LFE,  FR,  FL } },
 204 { .ca_index = 0x28,  .speakers = {  TC,   RC,  RR,  RL,  FC,    0,  FR,  FL } },
 205 { .ca_index = 0x29,  .speakers = {  TC,   RC,  RR,  RL,  FC,  LFE,  FR,  FL } },
 206 { .ca_index = 0x2a,  .speakers = { FCH,   RC,  RR,  RL,  FC,    0,  FR,  FL } },
 207 { .ca_index = 0x2b,  .speakers = { FCH,   RC,  RR,  RL,  FC,  LFE,  FR,  FL } },
 208 { .ca_index = 0x2c,  .speakers = {  TC,  FCH,  RR,  RL,  FC,    0,  FR,  FL } },
 209 { .ca_index = 0x2d,  .speakers = {  TC,  FCH,  RR,  RL,  FC,  LFE,  FR,  FL } },
 210 { .ca_index = 0x2e,  .speakers = { FRH,  FLH,  RR,  RL,  FC,    0,  FR,  FL } },
 211 { .ca_index = 0x2f,  .speakers = { FRH,  FLH,  RR,  RL,  FC,  LFE,  FR,  FL } },
 212 { .ca_index = 0x30,  .speakers = { FRW,  FLW,  RR,  RL,  FC,    0,  FR,  FL } },
 213 { .ca_index = 0x31,  .speakers = { FRW,  FLW,  RR,  RL,  FC,  LFE,  FR,  FL } },
 214 };
 215
 216 /*
 217  * HDMI routines
 218  */
 219
 220 #ifdef BE_PARANOID
 221 static void hdmi_get_dip_index(struct hda_codec *codec, hda_nid_t nid,
 222                                 int *packet_index, int *byte_index)
 223 {
 224         int val;
 225
 226         val = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_INDEX, 0);
 227
 228         *packet_index = val >> 5;
 229         *byte_index = val & 0x1f;
 230 }
 231 #endif
 232
 233 static void hdmi_set_dip_index(struct hda_codec *codec, hda_nid_t nid,
 234                                 int packet_index, int byte_index)
 235 {
 236         int val;
 237
 238         val = (packet_index << 5) | (byte_index & 0x1f);
 239
 240         snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val);
 241 }
 242
 243 static void hdmi_write_dip_byte(struct hda_codec *codec, hda_nid_t nid,
 244                                 unsigned char val)
 245 {
 246         snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_HDMI_DIP_DATA, val);
 247 }
 248
 249 static void hdmi_enable_output(struct hda_codec *codec)
 250 {
 251         /* Enable Audio InfoFrame Transmission */
 252         hdmi_set_dip_index(codec, PIN_NID, 0x0, 0x0);
 253         snd_hda_codec_write(codec, PIN_NID, 0, AC_VERB_SET_HDMI_DIP_XMIT,
 254                                                 AC_DIPXMIT_BEST);
 255         /* Unmute */
 256         if (get_wcaps(codec, PIN_NID) & AC_WCAP_OUT_AMP)
 257                 snd_hda_codec_write(codec, PIN_NID, 0,
 258                                 AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
 259         /* Enable pin out */
 260         snd_hda_sequence_write(codec, pinout_enable_verb);
 261 }
 262
 263 static void hdmi_disable_output(struct hda_codec *codec)
 264 {
 265         snd_hda_sequence_write(codec, pinout_disable_verb);
 266         if (get_wcaps(codec, PIN_NID) & AC_WCAP_OUT_AMP)
 267                 snd_hda_codec_write(codec, PIN_NID, 0,
 268                                 AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE);
 269
 270         /*
 271          * FIXME: noises may arise when playing music after reloading the
 272          * kernel module, until the next X restart or monitor repower.
 273          */
 274 }
 275
 276 static int hdmi_get_channel_count(struct hda_codec *codec)
 277 {
 278         return 1 + snd_hda_codec_read(codec, CVT_NID, 0,
 279                                         AC_VERB_GET_CVT_CHAN_COUNT, 0);
 280 }
 281
 282 static void hdmi_set_channel_count(struct hda_codec *codec, int chs)
 283 {
 284         snd_hda_codec_write(codec, CVT_NID, 0,
 285                                         AC_VERB_SET_CVT_CHAN_COUNT, chs - 1);
 286
 287         if (chs != hdmi_get_channel_count(codec))
 288                 snd_printd(KERN_INFO "HDMI channel count: expect %d, get %d\n",
 289                                         chs, hdmi_get_channel_count(codec));
 290 }
 291
 292 static void hdmi_debug_channel_mapping(struct hda_codec *codec)
 293 {
 294 #ifdef CONFIG_SND_DEBUG_VERBOSE
 295         int i;
 296         int slot;
 297
 298         for (i = 0; i < 8; i++) {
 299                 slot = snd_hda_codec_read(codec, CVT_NID, 0,
 300                                                 AC_VERB_GET_HDMI_CHAN_SLOT, i);
 301                 printk(KERN_DEBUG "HDMI: ASP channel %d => slot %d\n",
 302                                                 slot >> 4, slot & 0x7);
 303         }
 304 #endif
 305 }
 306
 307 static void hdmi_parse_eld(struct hda_codec *codec)
 308 {
 309         struct intel_hdmi_spec *spec = codec->spec;
 310         struct hdmi_eld *eld = &spec->sink_eld;
 311
 312         if (!snd_hdmi_get_eld(eld, codec, PIN_NID))
 313                 snd_hdmi_show_eld(eld);
 314 }
 315
 316
 317 /*
 318  * Audio InfoFrame routines
 319  */
 320
 321 static void hdmi_debug_dip_size(struct hda_codec *codec)
 322 {
 323 #ifdef CONFIG_SND_DEBUG_VERBOSE
 324         int i;
 325         int size;
 326
 327         size = snd_hdmi_get_eld_size(codec, PIN_NID);
 328         printk(KERN_DEBUG "HDMI: ELD buf size is %d\n", size);
 329
 330         for (i = 0; i < 8; i++) {
 331                 size = snd_hda_codec_read(codec, PIN_NID, 0,
 332                                                 AC_VERB_GET_HDMI_DIP_SIZE, i);
 333                 printk(KERN_DEBUG "HDMI: DIP GP[%d] buf size is %d\n", i, size);
 334         }
 335 #endif
 336 }
 337
 338 static void hdmi_clear_dip_buffers(struct hda_codec *codec)
 339 {
 340 #ifdef BE_PARANOID
 341         int i, j;
 342         int size;
 343         int pi, bi;
 344         for (i = 0; i < 8; i++) {
 345                 size = snd_hda_codec_read(codec, PIN_NID, 0,
 346                                                 AC_VERB_GET_HDMI_DIP_SIZE, i);
 347                 if (size == 0)
 348                         continue;
 349
 350                 hdmi_set_dip_index(codec, PIN_NID, i, 0x0);
 351                 for (j = 1; j < 1000; j++) {
 352                         hdmi_write_dip_byte(codec, PIN_NID, 0x0);
 353                         hdmi_get_dip_index(codec, PIN_NID, &pi, &bi);
 354                         if (pi != i)
 355                                 snd_printd(KERN_INFO "dip index %d: %d != %d\n",
 356                                                 bi, pi, i);
 357                         if (bi == 0) /* byte index wrapped around */
 358                                 break;
 359                 }
 360                 snd_printd(KERN_INFO
 361                         "HDMI: DIP GP[%d] buf reported size=%d, written=%d\n",
 362                         i, size, j);
 363         }
 364 #endif
 365 }
 366
 367 static void hdmi_fill_audio_infoframe(struct hda_codec *codec,
 368                                         struct hdmi_audio_infoframe *ai)
 369 {
 370         u8 *params = (u8 *)ai;
 371         int i;
 372
 373         hdmi_debug_dip_size(codec);
 374         hdmi_clear_dip_buffers(codec); /* be paranoid */
 375
 376         hdmi_set_dip_index(codec, PIN_NID, 0x0, 0x0);
 377         for (i = 0; i < sizeof(ai); i++)
 378                 hdmi_write_dip_byte(codec, PIN_NID, params[i]);
 379 }
 380
 381 /*
 382  * Compute derived values in channel_allocations[].
 383  */
 384 static void init_channel_allocations(void)
 385 {
 386         int i, j;
 387         struct cea_channel_speaker_allocation *p;
 388
 389         for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
 390                 p = channel_allocations + i;
 391                 p->channels = 0;
 392                 p->spk_mask = 0;
 393                 for (j = 0; j < ARRAY_SIZE(p->speakers); j++)
 394                         if (p->speakers[j]) {
 395                                 p->channels++;
 396                                 p->spk_mask |= p->speakers[j];
 397                         }
 398         }
 399 }
 400
 401 /*
 402  * The transformation takes two steps:
 403  *
 404  *      eld->spk_alloc => (eld_speaker_allocation_bits[]) => spk_mask
 405  *            spk_mask => (channel_allocations[])         => ai->CA
 406  *
 407  * TODO: it could select the wrong CA from multiple candidates.
 408 */
 409 static int hdmi_setup_channel_allocation(struct hda_codec *codec,
 410                                          struct hdmi_audio_infoframe *ai)
 411 {
 412         struct intel_hdmi_spec *spec = codec->spec;
 413         struct hdmi_eld *eld = &spec->sink_eld;
 414         int i;
 415         int spk_mask = 0;
 416         int channels = 1 + (ai->CC02_CT47 & 0x7);
 417         char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE];
 418
 419         /*
 420          * CA defaults to 0 for basic stereo audio
 421          */
 422         if (!eld->eld_ver)
 423                 return 0;
 424         if (!eld->spk_alloc)
 425                 return 0;
 426         if (channels <= 2)
 427                 return 0;
 428
 429         /*
 430          * expand ELD's speaker allocation mask
 431          *
 432          * ELD tells the speaker mask in a compact(paired) form,
 433          * expand ELD's notions to match the ones used by Audio InfoFrame.
 434          */
 435         for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) {
 436                 if (eld->spk_alloc & (1 << i))
 437                         spk_mask |= eld_speaker_allocation_bits[i];
 438         }
 439
 440         /* search for the first working match in the CA table */
 441         for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
 442                 if (channels == channel_allocations[i].channels &&
 443                     (spk_mask & channel_allocations[i].spk_mask) ==
 444                                 channel_allocations[i].spk_mask) {
 445                         ai->CA = channel_allocations[i].ca_index;
 446                         break;
 447                 }
 448         }
 449
 450         snd_print_channel_allocation(eld->spk_alloc, buf, sizeof(buf));
 451         snd_printdd(KERN_INFO
 452                         "HDMI: select CA 0x%x for %d-channel allocation: %s\n",
 453                         ai->CA, channels, buf);
 454
 455         return ai->CA;
 456 }
 457
 458 static void hdmi_setup_channel_mapping(struct hda_codec *codec,
 459                                         struct hdmi_audio_infoframe *ai)
 460 {
 461         if (!ai->CA)
 462                 return;
 463
 464         /*
 465          * TODO: adjust channel mapping if necessary
 466          * ALSA sequence is front/surr/clfe/side?
 467          */
 468
 469         snd_hda_sequence_write(codec, def_chan_map);
 470         hdmi_debug_channel_mapping(codec);
 471 }
 472
 473
 474 static void hdmi_setup_audio_infoframe(struct hda_codec *codec,
 475                                         struct snd_pcm_substream *substream)
 476 {
 477         struct hdmi_audio_infoframe ai = {
 478                 .type           = 0x84,
 479                 .ver            = 0x01,
 480                 .len            = 0x0a,
 481                 .CC02_CT47      = substream->runtime->channels - 1,
 482         };
 483
 484         hdmi_setup_channel_allocation(codec, &ai);
 485         hdmi_setup_channel_mapping(codec, &ai);
 486
 487         hdmi_fill_audio_infoframe(codec, &ai);
 488 }
 489
 490
 491 /*
 492  * Unsolicited events
 493  */
 494
 495 static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
 496 {
 497         int pind = !!(res & AC_UNSOL_RES_PD);
 498         int eldv = !!(res & AC_UNSOL_RES_ELDV);
 499
 500         printk(KERN_INFO
 501                 "HDMI hot plug event: Presence_Detect=%d ELD_Valid=%d\n",
 502                 pind, eldv);
 503
 504         if (pind && eldv) {
 505                 hdmi_parse_eld(codec);
 506                 /* TODO: do real things about ELD */
 507         }
 508 }
 509
 510 static void hdmi_non_intrinsic_event(struct hda_codec *codec, unsigned int res)
 511 {
 512         int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
 513         int cp_state = !!(res & AC_UNSOL_RES_CP_STATE);
 514         int cp_ready = !!(res & AC_UNSOL_RES_CP_READY);
 515
 516         printk(KERN_INFO
 517                 "HDMI content protection event: SUBTAG=0x%x CP_STATE=%d CP_READY=%d\n",
 518                 subtag,
 519                 cp_state,
 520                 cp_ready);
 521
 522         /* TODO */
 523         if (cp_state)
 524                 ;
 525         if (cp_ready)
 526                 ;
 527 }
 528
 529
 530 static void intel_hdmi_unsol_event(struct hda_codec *codec, unsigned int res)
 531 {
 532         int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
 533         int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
 534
 535         if (tag != INTEL_HDMI_EVENT_TAG) {
 536                 snd_printd(KERN_INFO "Unexpected HDMI event tag 0x%x\n", tag);
 537                 return;
 538         }
 539
 540         if (subtag == 0)
 541                 hdmi_intrinsic_event(codec, res);
 542         else
 543                 hdmi_non_intrinsic_event(codec, res);
 544 }
 545
 546 /*
 547  * Callbacks
 548  */
 549
 550 static int intel_hdmi_playback_pcm_open(struct hda_pcm_stream *hinfo,
 551                                         struct hda_codec *codec,
 552                                         struct snd_pcm_substream *substream)
 553 {
 554         struct intel_hdmi_spec *spec = codec->spec;
 555
 556         return snd_hda_multi_out_dig_open(codec, &spec->multiout);
 557 }
 558
 559 static int intel_hdmi_playback_pcm_close(struct hda_pcm_stream *hinfo,
 560                                          struct hda_codec *codec,
 561                                          struct snd_pcm_substream *substream)
 562 {
 563         struct intel_hdmi_spec *spec = codec->spec;
 564
 565         hdmi_disable_output(codec);
 566
 567         return snd_hda_multi_out_dig_close(codec, &spec->multiout);
 568 }
 569
 570 static int intel_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
 571                                            struct hda_codec *codec,
 572                                            unsigned int stream_tag,
 573                                            unsigned int format,
 574                                            struct snd_pcm_substream *substream)
 575 {
 576         struct intel_hdmi_spec *spec = codec->spec;
 577
 578         snd_hda_multi_out_dig_prepare(codec, &spec->multiout, stream_tag,
 579                                              format, substream);
 580
 581         hdmi_set_channel_count(codec, substream->runtime->channels);
 582
 583         hdmi_setup_audio_infoframe(codec, substream);
 584
 585         hdmi_enable_output(codec);
 586
 587         return 0;
 588 }
 589
 590 static struct hda_pcm_stream intel_hdmi_pcm_playback = {
 591         .substreams = 1,
 592         .channels_min = 2,
 593         .channels_max = 8,
 594         .nid = CVT_NID, /* NID to query formats and rates and setup streams */
 595         .ops = {
 596                 .open    = intel_hdmi_playback_pcm_open,
 597                 .close   = intel_hdmi_playback_pcm_close,
 598                 .prepare = intel_hdmi_playback_pcm_prepare
 599         },
 600 };
 601
 602 static int intel_hdmi_build_pcms(struct hda_codec *codec)
 603 {
 604         struct intel_hdmi_spec *spec = codec->spec;
 605         struct hda_pcm *info = &spec->pcm_rec;
 606
 607         codec->num_pcms = 1;
 608         codec->pcm_info = info;
 609
 610         info->name = "INTEL HDMI";
 611         info->pcm_type = HDA_PCM_TYPE_HDMI;
 612         info->stream[SNDRV_PCM_STREAM_PLAYBACK] = intel_hdmi_pcm_playback;
 613
 614         return 0;
 615 }
 616
 617 static int intel_hdmi_build_controls(struct hda_codec *codec)
 618 {
 619         struct intel_hdmi_spec *spec = codec->spec;
 620         int err;
 621
 622         err = snd_hda_create_spdif_out_ctls(codec, spec->multiout.dig_out_nid);
 623         if (err < 0)
 624                 return err;
 625
 626         return 0;
 627 }
 628
 629 static int intel_hdmi_init(struct hda_codec *codec)
 630 {
 631         /* disable audio output as early as possible */
 632         hdmi_disable_output(codec);
 633
 634         snd_hda_sequence_write(codec, unsolicited_response_verb);
 635
 636         return 0;
 637 }
 638
 639 static void intel_hdmi_free(struct hda_codec *codec)
 640 {
 641         struct intel_hdmi_spec *spec = codec->spec;
 642
 643         snd_hda_eld_proc_free(codec, &spec->sink_eld);
 644         kfree(spec);
 645 }
 646
 647 static struct hda_codec_ops intel_hdmi_patch_ops = {
 648         .init                   = intel_hdmi_init,
 649         .free                   = intel_hdmi_free,
 650         .build_pcms             = intel_hdmi_build_pcms,
 651         .build_controls         = intel_hdmi_build_controls,
 652         .unsol_event            = intel_hdmi_unsol_event,
 653 };
 654
 655 static int patch_intel_hdmi(struct hda_codec *codec)
 656 {
 657         struct intel_hdmi_spec *spec;
 658
 659         spec = kzalloc(sizeof(*spec), GFP_KERNEL);
 660         if (spec == NULL)
 661                 return -ENOMEM;
 662
 663         spec->multiout.num_dacs = 0;      /* no analog */
 664         spec->multiout.max_channels = 8;
 665         spec->multiout.dig_out_nid = CVT_NID;
 666
 667         codec->spec = spec;
 668         codec->patch_ops = intel_hdmi_patch_ops;
 669
 670         snd_hda_eld_proc_new(codec, &spec->sink_eld);
 671
 672         init_channel_allocations();
 673
 674         return 0;
 675 }
 676
 677 static struct hda_codec_preset snd_hda_preset_intelhdmi[] = {
 678         { .id = 0x808629fb, .name = "G45 DEVCL",  .patch = patch_intel_hdmi },
 679         { .id = 0x80862801, .name = "G45 DEVBLC", .patch = patch_intel_hdmi },
 680         { .id = 0x80862802, .name = "G45 DEVCTG", .patch = patch_intel_hdmi },
 681         { .id = 0x80862803, .name = "G45 DEVELK", .patch = patch_intel_hdmi },
 682         { .id = 0x10951392, .name = "SiI1392 HDMI",     .patch = patch_intel_hdmi },
 683         {} /* terminator */
 684 };
 685
 686 MODULE_ALIAS("snd-hda-codec-id:808629fb");
 687 MODULE_ALIAS("snd-hda-codec-id:80862801");
 688 MODULE_ALIAS("snd-hda-codec-id:80862802");
 689 MODULE_ALIAS("snd-hda-codec-id:80862803");
 690 MODULE_ALIAS("snd-hda-codec-id:10951392");
 691
 692 MODULE_LICENSE("GPL");
 693 MODULE_DESCRIPTION("Intel HDMI HD-audio codec");
 694
 695 static struct hda_codec_preset_list intel_list = {
 696         .preset = snd_hda_preset_intelhdmi,
 697         .owner = THIS_MODULE,
 698 };
 699
 700 static int __init patch_intelhdmi_init(void)
 701 {
 702         return snd_hda_add_codec_preset(&intel_list);
 703 }
 704
 705 static void __exit patch_intelhdmi_exit(void)
 706 {
 707         snd_hda_delete_codec_preset(&intel_list);
 708 }
 709
 710 module_init(patch_intelhdmi_init)
 711 module_exit(patch_intelhdmi_exit)