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 unsolicited_response_verb[] = {
  53         {PIN_NID, AC_VERB_SET_UNSOLICITED_ENABLE, AC_USRSP_EN |
  54                                                   INTEL_HDMI_EVENT_TAG},
  55         {}
  56 };
  57
  58 static struct hda_verb def_chan_map[] = {
  59         {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x00},
  60         {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x11},
  61         {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x22},
  62         {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x33},
  63         {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x44},
  64         {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x55},
  65         {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x66},
  66         {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x77},
  67         {}
  68 };
  69
  70
  71 struct hdmi_audio_infoframe {
  72         u8 type; /* 0x84 */
  73         u8 ver;  /* 0x01 */
  74         u8 len;  /* 0x0a */
  75
  76         u8 checksum;    /* PB0 */
  77         u8 CC02_CT47;   /* CC in bits 0:2, CT in 4:7 */
  78         u8 SS01_SF24;
  79         u8 CXT04;
  80         u8 CA;
  81         u8 LFEPBL01_LSV36_DM_INH7;
  82         u8 reserved[5]; /* PB6 - PB10 */
  83 };
  84
  85 /*
  86  * CEA speaker placement:
  87  *
  88  *        FLH       FCH        FRH
  89  *  FLW    FL  FLC   FC   FRC   FR   FRW
  90  *
  91  *                                  LFE
  92  *                     TC
  93  *
  94  *          RL  RLC   RC   RRC   RR
  95  *
  96  * The Left/Right Surround channel _notions_ LS/RS in SMPTE 320M corresponds to
  97  * CEA RL/RR; The SMPTE channel _assignment_ C/LFE is swapped to CEA LFE/FC.
  98  */
  99 enum cea_speaker_placement {
 100         FL  = (1 <<  0),        /* Front Left           */
 101         FC  = (1 <<  1),        /* Front Center         */
 102         FR  = (1 <<  2),        /* Front Right          */
 103         FLC = (1 <<  3),        /* Front Left Center    */
 104         FRC = (1 <<  4),        /* Front Right Center   */
 105         RL  = (1 <<  5),        /* Rear Left            */
 106         RC  = (1 <<  6),        /* Rear Center          */
 107         RR  = (1 <<  7),        /* Rear Right           */
 108         RLC = (1 <<  8),        /* Rear Left Center     */
 109         RRC = (1 <<  9),        /* Rear Right Center    */
 110         LFE = (1 << 10),        /* Low Frequency Effect */
 111         FLW = (1 << 11),        /* Front Left Wide      */
 112         FRW = (1 << 12),        /* Front Right Wide     */
 113         FLH = (1 << 13),        /* Front Left High      */
 114         FCH = (1 << 14),        /* Front Center High    */
 115         FRH = (1 << 15),        /* Front Right High     */
 116         TC  = (1 << 16),        /* Top Center           */
 117 };
 118
 119 /*
 120  * ELD SA bits in the CEA Speaker Allocation data block
 121  */
 122 static int eld_speaker_allocation_bits[] = {
 123         [0] = FL | FR,
 124         [1] = LFE,
 125         [2] = FC,
 126         [3] = RL | RR,
 127         [4] = RC,
 128         [5] = FLC | FRC,
 129         [6] = RLC | RRC,
 130         /* the following are not defined in ELD yet */
 131         [7] = FLW | FRW,
 132         [8] = FLH | FRH,
 133         [9] = TC,
 134         [10] = FCH,
 135 };
 136
 137 struct cea_channel_speaker_allocation {
 138         int ca_index;
 139         int speakers[8];
 140
 141         /* derived values, just for convenience */
 142         int channels;
 143         int spk_mask;
 144 };
 145
 146 /*
 147  * This is an ordered list!
 148  *
 149  * The preceding ones have better chances to be selected by
 150  * hdmi_setup_channel_allocation().
 151  */
 152 static struct cea_channel_speaker_allocation channel_allocations[] = {
 153 /*                        channel:   8     7    6    5    4     3    2    1  */
 154 { .ca_index = 0x00,  .speakers = {   0,    0,   0,   0,   0,    0,  FR,  FL } },
 155                                  /* 2.1 */
 156 { .ca_index = 0x01,  .speakers = {   0,    0,   0,   0,   0,  LFE,  FR,  FL } },
 157                                  /* Dolby Surround */
 158 { .ca_index = 0x02,  .speakers = {   0,    0,   0,   0,  FC,    0,  FR,  FL } },
 159 { .ca_index = 0x03,  .speakers = {   0,    0,   0,   0,  FC,  LFE,  FR,  FL } },
 160 { .ca_index = 0x04,  .speakers = {   0,    0,   0,  RC,   0,    0,  FR,  FL } },
 161 { .ca_index = 0x05,  .speakers = {   0,    0,   0,  RC,   0,  LFE,  FR,  FL } },
 162 { .ca_index = 0x06,  .speakers = {   0,    0,   0,  RC,  FC,    0,  FR,  FL } },
 163 { .ca_index = 0x07,  .speakers = {   0,    0,   0,  RC,  FC,  LFE,  FR,  FL } },
 164 { .ca_index = 0x08,  .speakers = {   0,    0,  RR,  RL,   0,    0,  FR,  FL } },
 165 { .ca_index = 0x09,  .speakers = {   0,    0,  RR,  RL,   0,  LFE,  FR,  FL } },
 166 { .ca_index = 0x0a,  .speakers = {   0,    0,  RR,  RL,  FC,    0,  FR,  FL } },
 167                                  /* 5.1 */
 168 { .ca_index = 0x0b,  .speakers = {   0,    0,  RR,  RL,  FC,  LFE,  FR,  FL } },
 169 { .ca_index = 0x0c,  .speakers = {   0,   RC,  RR,  RL,   0,    0,  FR,  FL } },
 170 { .ca_index = 0x0d,  .speakers = {   0,   RC,  RR,  RL,   0,  LFE,  FR,  FL } },
 171 { .ca_index = 0x0e,  .speakers = {   0,   RC,  RR,  RL,  FC,    0,  FR,  FL } },
 172                                  /* 6.1 */
 173 { .ca_index = 0x0f,  .speakers = {   0,   RC,  RR,  RL,  FC,  LFE,  FR,  FL } },
 174 { .ca_index = 0x10,  .speakers = { RRC,  RLC,  RR,  RL,   0,    0,  FR,  FL } },
 175 { .ca_index = 0x11,  .speakers = { RRC,  RLC,  RR,  RL,   0,  LFE,  FR,  FL } },
 176 { .ca_index = 0x12,  .speakers = { RRC,  RLC,  RR,  RL,  FC,    0,  FR,  FL } },
 177                                  /* 7.1 */
 178 { .ca_index = 0x13,  .speakers = { RRC,  RLC,  RR,  RL,  FC,  LFE,  FR,  FL } },
 179 { .ca_index = 0x14,  .speakers = { FRC,  FLC,   0,   0,   0,    0,  FR,  FL } },
 180 { .ca_index = 0x15,  .speakers = { FRC,  FLC,   0,   0,   0,  LFE,  FR,  FL } },
 181 { .ca_index = 0x16,  .speakers = { FRC,  FLC,   0,   0,  FC,    0,  FR,  FL } },
 182 { .ca_index = 0x17,  .speakers = { FRC,  FLC,   0,   0,  FC,  LFE,  FR,  FL } },
 183 { .ca_index = 0x18,  .speakers = { FRC,  FLC,   0,  RC,   0,    0,  FR,  FL } },
 184 { .ca_index = 0x19,  .speakers = { FRC,  FLC,   0,  RC,   0,  LFE,  FR,  FL } },
 185 { .ca_index = 0x1a,  .speakers = { FRC,  FLC,   0,  RC,  FC,    0,  FR,  FL } },
 186 { .ca_index = 0x1b,  .speakers = { FRC,  FLC,   0,  RC,  FC,  LFE,  FR,  FL } },
 187 { .ca_index = 0x1c,  .speakers = { FRC,  FLC,  RR,  RL,   0,    0,  FR,  FL } },
 188 { .ca_index = 0x1d,  .speakers = { FRC,  FLC,  RR,  RL,   0,  LFE,  FR,  FL } },
 189 { .ca_index = 0x1e,  .speakers = { FRC,  FLC,  RR,  RL,  FC,    0,  FR,  FL } },
 190 { .ca_index = 0x1f,  .speakers = { FRC,  FLC,  RR,  RL,  FC,  LFE,  FR,  FL } },
 191 { .ca_index = 0x20,  .speakers = {   0,  FCH,  RR,  RL,  FC,    0,  FR,  FL } },
 192 { .ca_index = 0x21,  .speakers = {   0,  FCH,  RR,  RL,  FC,  LFE,  FR,  FL } },
 193 { .ca_index = 0x22,  .speakers = {  TC,    0,  RR,  RL,  FC,    0,  FR,  FL } },
 194 { .ca_index = 0x23,  .speakers = {  TC,    0,  RR,  RL,  FC,  LFE,  FR,  FL } },
 195 { .ca_index = 0x24,  .speakers = { FRH,  FLH,  RR,  RL,   0,    0,  FR,  FL } },
 196 { .ca_index = 0x25,  .speakers = { FRH,  FLH,  RR,  RL,   0,  LFE,  FR,  FL } },
 197 { .ca_index = 0x26,  .speakers = { FRW,  FLW,  RR,  RL,   0,    0,  FR,  FL } },
 198 { .ca_index = 0x27,  .speakers = { FRW,  FLW,  RR,  RL,   0,  LFE,  FR,  FL } },
 199 { .ca_index = 0x28,  .speakers = {  TC,   RC,  RR,  RL,  FC,    0,  FR,  FL } },
 200 { .ca_index = 0x29,  .speakers = {  TC,   RC,  RR,  RL,  FC,  LFE,  FR,  FL } },
 201 { .ca_index = 0x2a,  .speakers = { FCH,   RC,  RR,  RL,  FC,    0,  FR,  FL } },
 202 { .ca_index = 0x2b,  .speakers = { FCH,   RC,  RR,  RL,  FC,  LFE,  FR,  FL } },
 203 { .ca_index = 0x2c,  .speakers = {  TC,  FCH,  RR,  RL,  FC,    0,  FR,  FL } },
 204 { .ca_index = 0x2d,  .speakers = {  TC,  FCH,  RR,  RL,  FC,  LFE,  FR,  FL } },
 205 { .ca_index = 0x2e,  .speakers = { FRH,  FLH,  RR,  RL,  FC,    0,  FR,  FL } },
 206 { .ca_index = 0x2f,  .speakers = { FRH,  FLH,  RR,  RL,  FC,  LFE,  FR,  FL } },
 207 { .ca_index = 0x30,  .speakers = { FRW,  FLW,  RR,  RL,  FC,    0,  FR,  FL } },
 208 { .ca_index = 0x31,  .speakers = { FRW,  FLW,  RR,  RL,  FC,  LFE,  FR,  FL } },
 209 };
 210
 211 /*
 212  * HDMI routines
 213  */
 214
 215 #ifdef BE_PARANOID
 216 static void hdmi_get_dip_index(struct hda_codec *codec, hda_nid_t nid,
 217                                 int *packet_index, int *byte_index)
 218 {
 219         int val;
 220
 221         val = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_INDEX, 0);
 222
 223         *packet_index = val >> 5;
 224         *byte_index = val & 0x1f;
 225 }
 226 #endif
 227
 228 static void hdmi_set_dip_index(struct hda_codec *codec, hda_nid_t nid,
 229                                 int packet_index, int byte_index)
 230 {
 231         int val;
 232
 233         val = (packet_index << 5) | (byte_index & 0x1f);
 234
 235         snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val);
 236 }
 237
 238 static void hdmi_write_dip_byte(struct hda_codec *codec, hda_nid_t nid,
 239                                 unsigned char val)
 240 {
 241         snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_HDMI_DIP_DATA, val);
 242 }
 243
 244 static void hdmi_enable_output(struct hda_codec *codec)
 245 {
 246         /* Unmute */
 247         if (get_wcaps(codec, PIN_NID) & AC_WCAP_OUT_AMP)
 248                 snd_hda_codec_write(codec, PIN_NID, 0,
 249                                 AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
 250         /* Enable pin out */
 251         snd_hda_sequence_write(codec, pinout_enable_verb);
 252 }
 253
 254 /*
 255  * Enable Audio InfoFrame Transmission
 256  */
 257 static void hdmi_start_infoframe_trans(struct hda_codec *codec)
 258 {
 259         hdmi_set_dip_index(codec, PIN_NID, 0x0, 0x0);
 260         snd_hda_codec_write(codec, PIN_NID, 0, AC_VERB_SET_HDMI_DIP_XMIT,
 261                                                 AC_DIPXMIT_BEST);
 262 }
 263
 264 /*
 265  * Disable Audio InfoFrame Transmission
 266  */
 267 static void hdmi_stop_infoframe_trans(struct hda_codec *codec)
 268 {
 269         hdmi_set_dip_index(codec, PIN_NID, 0x0, 0x0);
 270         snd_hda_codec_write(codec, PIN_NID, 0, AC_VERB_SET_HDMI_DIP_XMIT,
 271                                                 AC_DIPXMIT_DISABLE);
 272 }
 273
 274 static int hdmi_get_channel_count(struct hda_codec *codec)
 275 {
 276         return 1 + snd_hda_codec_read(codec, CVT_NID, 0,
 277                                         AC_VERB_GET_CVT_CHAN_COUNT, 0);
 278 }
 279
 280 static void hdmi_set_channel_count(struct hda_codec *codec, int chs)
 281 {
 282         snd_hda_codec_write(codec, CVT_NID, 0,
 283                                         AC_VERB_SET_CVT_CHAN_COUNT, chs - 1);
 284
 285         if (chs != hdmi_get_channel_count(codec))
 286                 snd_printd(KERN_INFO "HDMI channel count: expect %d, get %d\n",
 287                                         chs, hdmi_get_channel_count(codec));
 288 }
 289
 290 static void hdmi_debug_channel_mapping(struct hda_codec *codec)
 291 {
 292 #ifdef CONFIG_SND_DEBUG_VERBOSE
 293         int i;
 294         int slot;
 295
 296         for (i = 0; i < 8; i++) {
 297                 slot = snd_hda_codec_read(codec, CVT_NID, 0,
 298                                                 AC_VERB_GET_HDMI_CHAN_SLOT, i);
 299                 printk(KERN_DEBUG "HDMI: ASP channel %d => slot %d\n",
 300                                                 slot >> 4, slot & 0x7);
 301         }
 302 #endif
 303 }
 304
 305 static void hdmi_parse_eld(struct hda_codec *codec)
 306 {
 307         struct intel_hdmi_spec *spec = codec->spec;
 308         struct hdmi_eld *eld = &spec->sink_eld;
 309
 310         if (!snd_hdmi_get_eld(eld, codec, PIN_NID))
 311                 snd_hdmi_show_eld(eld);
 312 }
 313
 314
 315 /*
 316  * Audio InfoFrame routines
 317  */
 318
 319 static void hdmi_debug_dip_size(struct hda_codec *codec)
 320 {
 321 #ifdef CONFIG_SND_DEBUG_VERBOSE
 322         int i;
 323         int size;
 324
 325         size = snd_hdmi_get_eld_size(codec, PIN_NID);
 326         printk(KERN_DEBUG "HDMI: ELD buf size is %d\n", size);
 327
 328         for (i = 0; i < 8; i++) {
 329                 size = snd_hda_codec_read(codec, PIN_NID, 0,
 330                                                 AC_VERB_GET_HDMI_DIP_SIZE, i);
 331                 printk(KERN_DEBUG "HDMI: DIP GP[%d] buf size is %d\n", i, size);
 332         }
 333 #endif
 334 }
 335
 336 static void hdmi_clear_dip_buffers(struct hda_codec *codec)
 337 {
 338 #ifdef BE_PARANOID
 339         int i, j;
 340         int size;
 341         int pi, bi;
 342         for (i = 0; i < 8; i++) {
 343                 size = snd_hda_codec_read(codec, PIN_NID, 0,
 344                                                 AC_VERB_GET_HDMI_DIP_SIZE, i);
 345                 if (size == 0)
 346                         continue;
 347
 348                 hdmi_set_dip_index(codec, PIN_NID, i, 0x0);
 349                 for (j = 1; j < 1000; j++) {
 350                         hdmi_write_dip_byte(codec, PIN_NID, 0x0);
 351                         hdmi_get_dip_index(codec, PIN_NID, &pi, &bi);
 352                         if (pi != i)
 353                                 snd_printd(KERN_INFO "dip index %d: %d != %d\n",
 354                                                 bi, pi, i);
 355                         if (bi == 0) /* byte index wrapped around */
 356                                 break;
 357                 }
 358                 snd_printd(KERN_INFO
 359                         "HDMI: DIP GP[%d] buf reported size=%d, written=%d\n",
 360                         i, size, j);
 361         }
 362 #endif
 363 }
 364
 365 static void hdmi_fill_audio_infoframe(struct hda_codec *codec,
 366                                         struct hdmi_audio_infoframe *ai)
 367 {
 368         u8 *params = (u8 *)ai;
 369         u8 sum = 0;
 370         int i;
 371
 372         hdmi_debug_dip_size(codec);
 373         hdmi_clear_dip_buffers(codec); /* be paranoid */
 374
 375         for (i = 0; i < sizeof(ai); i++)
 376                 sum += params[i];
 377         ai->checksum = - sum;
 378
 379         hdmi_set_dip_index(codec, PIN_NID, 0x0, 0x0);
 380         for (i = 0; i < sizeof(ai); i++)
 381                 hdmi_write_dip_byte(codec, PIN_NID, params[i]);
 382 }
 383
 384 /*
 385  * Compute derived values in channel_allocations[].
 386  */
 387 static void init_channel_allocations(void)
 388 {
 389         int i, j;
 390         struct cea_channel_speaker_allocation *p;
 391
 392         for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
 393                 p = channel_allocations + i;
 394                 p->channels = 0;
 395                 p->spk_mask = 0;
 396                 for (j = 0; j < ARRAY_SIZE(p->speakers); j++)
 397                         if (p->speakers[j]) {
 398                                 p->channels++;
 399                                 p->spk_mask |= p->speakers[j];
 400                         }
 401         }
 402 }
 403
 404 /*
 405  * The transformation takes two steps:
 406  *
 407  *      eld->spk_alloc => (eld_speaker_allocation_bits[]) => spk_mask
 408  *            spk_mask => (channel_allocations[])         => ai->CA
 409  *
 410  * TODO: it could select the wrong CA from multiple candidates.
 411 */
 412 static int hdmi_setup_channel_allocation(struct hda_codec *codec,
 413                                          struct hdmi_audio_infoframe *ai)
 414 {
 415         struct intel_hdmi_spec *spec = codec->spec;
 416         struct hdmi_eld *eld = &spec->sink_eld;
 417         int i;
 418         int spk_mask = 0;
 419         int channels = 1 + (ai->CC02_CT47 & 0x7);
 420         char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE];
 421
 422         /*
 423          * CA defaults to 0 for basic stereo audio
 424          */
 425         if (channels <= 2)
 426                 return 0;
 427
 428         /*
 429          * HDMI sink's ELD info cannot always be retrieved for now, e.g.
 430          * in console or for audio devices. Assume the highest speakers
 431          * configuration, to _not_ prohibit multi-channel audio playback.
 432          */
 433         if (!eld->spk_alloc)
 434                 eld->spk_alloc = 0xffff;
 435
 436         /*
 437          * expand ELD's speaker allocation mask
 438          *
 439          * ELD tells the speaker mask in a compact(paired) form,
 440          * expand ELD's notions to match the ones used by Audio InfoFrame.
 441          */
 442         for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) {
 443                 if (eld->spk_alloc & (1 << i))
 444                         spk_mask |= eld_speaker_allocation_bits[i];
 445         }
 446
 447         /* search for the first working match in the CA table */
 448         for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
 449                 if (channels == channel_allocations[i].channels &&
 450                     (spk_mask & channel_allocations[i].spk_mask) ==
 451                                 channel_allocations[i].spk_mask) {
 452                         ai->CA = channel_allocations[i].ca_index;
 453                         break;
 454                 }
 455         }
 456
 457         snd_print_channel_allocation(eld->spk_alloc, buf, sizeof(buf));
 458         snd_printdd(KERN_INFO
 459                         "HDMI: select CA 0x%x for %d-channel allocation: %s\n",
 460                         ai->CA, channels, buf);
 461
 462         return ai->CA;
 463 }
 464
 465 static void hdmi_setup_channel_mapping(struct hda_codec *codec,
 466                                         struct hdmi_audio_infoframe *ai)
 467 {
 468         if (!ai->CA)
 469                 return;
 470
 471         /*
 472          * TODO: adjust channel mapping if necessary
 473          * ALSA sequence is front/surr/clfe/side?
 474          */
 475
 476         snd_hda_sequence_write(codec, def_chan_map);
 477         hdmi_debug_channel_mapping(codec);
 478 }
 479
 480
 481 static void hdmi_setup_audio_infoframe(struct hda_codec *codec,
 482                                         struct snd_pcm_substream *substream)
 483 {
 484         struct hdmi_audio_infoframe ai = {
 485                 .type           = 0x84,
 486                 .ver            = 0x01,
 487                 .len            = 0x0a,
 488                 .CC02_CT47      = substream->runtime->channels - 1,
 489         };
 490
 491         hdmi_setup_channel_allocation(codec, &ai);
 492         hdmi_setup_channel_mapping(codec, &ai);
 493
 494         hdmi_fill_audio_infoframe(codec, &ai);
 495         hdmi_start_infoframe_trans(codec);
 496 }
 497
 498
 499 /*
 500  * Unsolicited events
 501  */
 502
 503 static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
 504 {
 505         int pind = !!(res & AC_UNSOL_RES_PD);
 506         int eldv = !!(res & AC_UNSOL_RES_ELDV);
 507
 508         printk(KERN_INFO
 509                 "HDMI hot plug event: Presence_Detect=%d ELD_Valid=%d\n",
 510                 pind, eldv);
 511
 512         if (pind && eldv) {
 513                 hdmi_parse_eld(codec);
 514                 /* TODO: do real things about ELD */
 515         }
 516 }
 517
 518 static void hdmi_non_intrinsic_event(struct hda_codec *codec, unsigned int res)
 519 {
 520         int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
 521         int cp_state = !!(res & AC_UNSOL_RES_CP_STATE);
 522         int cp_ready = !!(res & AC_UNSOL_RES_CP_READY);
 523
 524         printk(KERN_INFO
 525                 "HDMI content protection event: SUBTAG=0x%x CP_STATE=%d CP_READY=%d\n",
 526                 subtag,
 527                 cp_state,
 528                 cp_ready);
 529
 530         /* TODO */
 531         if (cp_state)
 532                 ;
 533         if (cp_ready)
 534                 ;
 535 }
 536
 537
 538 static void intel_hdmi_unsol_event(struct hda_codec *codec, unsigned int res)
 539 {
 540         int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
 541         int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
 542
 543         if (tag != INTEL_HDMI_EVENT_TAG) {
 544                 snd_printd(KERN_INFO "Unexpected HDMI event tag 0x%x\n", tag);
 545                 return;
 546         }
 547
 548         if (subtag == 0)
 549                 hdmi_intrinsic_event(codec, res);
 550         else
 551                 hdmi_non_intrinsic_event(codec, res);
 552 }
 553
 554 /*
 555  * Callbacks
 556  */
 557
 558 static int intel_hdmi_playback_pcm_open(struct hda_pcm_stream *hinfo,
 559                                         struct hda_codec *codec,
 560                                         struct snd_pcm_substream *substream)
 561 {
 562         struct intel_hdmi_spec *spec = codec->spec;
 563
 564         return snd_hda_multi_out_dig_open(codec, &spec->multiout);
 565 }
 566
 567 static int intel_hdmi_playback_pcm_close(struct hda_pcm_stream *hinfo,
 568                                          struct hda_codec *codec,
 569                                          struct snd_pcm_substream *substream)
 570 {
 571         struct intel_hdmi_spec *spec = codec->spec;
 572
 573         hdmi_stop_infoframe_trans(codec);
 574
 575         return snd_hda_multi_out_dig_close(codec, &spec->multiout);
 576 }
 577
 578 static int intel_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
 579                                            struct hda_codec *codec,
 580                                            unsigned int stream_tag,
 581                                            unsigned int format,
 582                                            struct snd_pcm_substream *substream)
 583 {
 584         struct intel_hdmi_spec *spec = codec->spec;
 585
 586         snd_hda_multi_out_dig_prepare(codec, &spec->multiout, stream_tag,
 587                                              format, substream);
 588
 589         hdmi_set_channel_count(codec, substream->runtime->channels);
 590
 591         hdmi_setup_audio_infoframe(codec, substream);
 592
 593         return 0;
 594 }
 595
 596 static struct hda_pcm_stream intel_hdmi_pcm_playback = {
 597         .substreams = 1,
 598         .channels_min = 2,
 599         .channels_max = 8,
 600         .nid = CVT_NID, /* NID to query formats and rates and setup streams */
 601         .ops = {
 602                 .open    = intel_hdmi_playback_pcm_open,
 603                 .close   = intel_hdmi_playback_pcm_close,
 604                 .prepare = intel_hdmi_playback_pcm_prepare
 605         },
 606 };
 607
 608 static int intel_hdmi_build_pcms(struct hda_codec *codec)
 609 {
 610         struct intel_hdmi_spec *spec = codec->spec;
 611         struct hda_pcm *info = &spec->pcm_rec;
 612
 613         codec->num_pcms = 1;
 614         codec->pcm_info = info;
 615
 616         info->name = "INTEL HDMI";
 617         info->pcm_type = HDA_PCM_TYPE_HDMI;
 618         info->stream[SNDRV_PCM_STREAM_PLAYBACK] = intel_hdmi_pcm_playback;
 619
 620         return 0;
 621 }
 622
 623 static int intel_hdmi_build_controls(struct hda_codec *codec)
 624 {
 625         struct intel_hdmi_spec *spec = codec->spec;
 626         int err;
 627
 628         err = snd_hda_create_spdif_out_ctls(codec, spec->multiout.dig_out_nid);
 629         if (err < 0)
 630                 return err;
 631
 632         return 0;
 633 }
 634
 635 static int intel_hdmi_init(struct hda_codec *codec)
 636 {
 637         hdmi_enable_output(codec);
 638
 639         snd_hda_sequence_write(codec, unsolicited_response_verb);
 640
 641         return 0;
 642 }
 643
 644 static void intel_hdmi_free(struct hda_codec *codec)
 645 {
 646         struct intel_hdmi_spec *spec = codec->spec;
 647
 648         snd_hda_eld_proc_free(codec, &spec->sink_eld);
 649         kfree(spec);
 650 }
 651
 652 static struct hda_codec_ops intel_hdmi_patch_ops = {
 653         .init                   = intel_hdmi_init,
 654         .free                   = intel_hdmi_free,
 655         .build_pcms             = intel_hdmi_build_pcms,
 656         .build_controls         = intel_hdmi_build_controls,
 657         .unsol_event            = intel_hdmi_unsol_event,
 658 };
 659
 660 static int patch_intel_hdmi(struct hda_codec *codec)
 661 {
 662         struct intel_hdmi_spec *spec;
 663
 664         spec = kzalloc(sizeof(*spec), GFP_KERNEL);
 665         if (spec == NULL)
 666                 return -ENOMEM;
 667
 668         spec->multiout.num_dacs = 0;      /* no analog */
 669         spec->multiout.max_channels = 8;
 670         spec->multiout.dig_out_nid = CVT_NID;
 671
 672         codec->spec = spec;
 673         codec->patch_ops = intel_hdmi_patch_ops;
 674
 675         snd_hda_eld_proc_new(codec, &spec->sink_eld);
 676
 677         init_channel_allocations();
 678
 679         return 0;
 680 }
 681
 682 static struct hda_codec_preset snd_hda_preset_intelhdmi[] = {
 683         { .id = 0x808629fb, .name = "G45 DEVCL",  .patch = patch_intel_hdmi },
 684         { .id = 0x80862801, .name = "G45 DEVBLC", .patch = patch_intel_hdmi },
 685         { .id = 0x80862802, .name = "G45 DEVCTG", .patch = patch_intel_hdmi },
 686         { .id = 0x80862803, .name = "G45 DEVELK", .patch = patch_intel_hdmi },
 687         { .id = 0x80862804, .name = "G45 DEVIBX", .patch = patch_intel_hdmi },
 688         { .id = 0x10951392, .name = "SiI1392 HDMI",     .patch = patch_intel_hdmi },
 689         {} /* terminator */
 690 };
 691
 692 MODULE_ALIAS("snd-hda-codec-id:808629fb");
 693 MODULE_ALIAS("snd-hda-codec-id:80862801");
 694 MODULE_ALIAS("snd-hda-codec-id:80862802");
 695 MODULE_ALIAS("snd-hda-codec-id:80862803");
 696 MODULE_ALIAS("snd-hda-codec-id:80862804");
 697 MODULE_ALIAS("snd-hda-codec-id:10951392");
 698
 699 MODULE_LICENSE("GPL");
 700 MODULE_DESCRIPTION("Intel HDMI HD-audio codec");
 701
 702 static struct hda_codec_preset_list intel_list = {
 703         .preset = snd_hda_preset_intelhdmi,
 704         .owner = THIS_MODULE,
 705 };
 706
 707 static int __init patch_intelhdmi_init(void)
 708 {
 709         return snd_hda_add_codec_preset(&intel_list);
 710 }
 711
 712 static void __exit patch_intelhdmi_exit(void)
 713 {
 714         snd_hda_delete_codec_preset(&intel_list);
 715 }
 716
 717 module_init(patch_intelhdmi_init)
 718 module_exit(patch_intelhdmi_exit)