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 /*
  37  * The HDMI/DisplayPort configuration can be highly dynamic. A graphics device
  38  * could support two independent pipes, each of them can be connected to one or
  39  * more ports (DVI, HDMI or DisplayPort).
  40  *
  41  * The HDA correspondence of pipes/ports are converter/pin nodes.
  42  */
  43 #define INTEL_HDMI_CVTS 2
  44 #define INTEL_HDMI_PINS 3
  45
  46 static char *intel_hdmi_pcm_names[INTEL_HDMI_CVTS] = {
  47         "INTEL HDMI 0",
  48         "INTEL HDMI 1",
  49 };
  50
  51 struct intel_hdmi_spec {
  52         int num_cvts;
  53         int num_pins;
  54         hda_nid_t cvt[INTEL_HDMI_CVTS+1];  /* audio sources */
  55         hda_nid_t pin[INTEL_HDMI_PINS+1];  /* audio sinks */
  56
  57         /*
  58          * source connection for each pin
  59          */
  60         hda_nid_t pin_cvt[INTEL_HDMI_PINS+1];
  61
  62         /*
  63          * HDMI sink attached to each pin
  64          */
  65         struct hdmi_eld sink_eld[INTEL_HDMI_PINS];
  66
  67         /*
  68          * export one pcm per pipe
  69          */
  70         struct hda_pcm  pcm_rec[INTEL_HDMI_CVTS];
  71 };
  72
  73 struct hdmi_audio_infoframe {
  74         u8 type; /* 0x84 */
  75         u8 ver;  /* 0x01 */
  76         u8 len;  /* 0x0a */
  77
  78         u8 checksum;    /* PB0 */
  79         u8 CC02_CT47;   /* CC in bits 0:2, CT in 4:7 */
  80         u8 SS01_SF24;
  81         u8 CXT04;
  82         u8 CA;
  83         u8 LFEPBL01_LSV36_DM_INH7;
  84         u8 reserved[5]; /* PB6 - PB10 */
  85 };
  86
  87 /*
  88  * CEA speaker placement:
  89  *
  90  *        FLH       FCH        FRH
  91  *  FLW    FL  FLC   FC   FRC   FR   FRW
  92  *
  93  *                                  LFE
  94  *                     TC
  95  *
  96  *          RL  RLC   RC   RRC   RR
  97  *
  98  * The Left/Right Surround channel _notions_ LS/RS in SMPTE 320M corresponds to
  99  * CEA RL/RR; The SMPTE channel _assignment_ C/LFE is swapped to CEA LFE/FC.
 100  */
 101 enum cea_speaker_placement {
 102         FL  = (1 <<  0),        /* Front Left           */
 103         FC  = (1 <<  1),        /* Front Center         */
 104         FR  = (1 <<  2),        /* Front Right          */
 105         FLC = (1 <<  3),        /* Front Left Center    */
 106         FRC = (1 <<  4),        /* Front Right Center   */
 107         RL  = (1 <<  5),        /* Rear Left            */
 108         RC  = (1 <<  6),        /* Rear Center          */
 109         RR  = (1 <<  7),        /* Rear Right           */
 110         RLC = (1 <<  8),        /* Rear Left Center     */
 111         RRC = (1 <<  9),        /* Rear Right Center    */
 112         LFE = (1 << 10),        /* Low Frequency Effect */
 113         FLW = (1 << 11),        /* Front Left Wide      */
 114         FRW = (1 << 12),        /* Front Right Wide     */
 115         FLH = (1 << 13),        /* Front Left High      */
 116         FCH = (1 << 14),        /* Front Center High    */
 117         FRH = (1 << 15),        /* Front Right High     */
 118         TC  = (1 << 16),        /* Top Center           */
 119 };
 120
 121 /*
 122  * ELD SA bits in the CEA Speaker Allocation data block
 123  */
 124 static int eld_speaker_allocation_bits[] = {
 125         [0] = FL | FR,
 126         [1] = LFE,
 127         [2] = FC,
 128         [3] = RL | RR,
 129         [4] = RC,
 130         [5] = FLC | FRC,
 131         [6] = RLC | RRC,
 132         /* the following are not defined in ELD yet */
 133         [7] = FLW | FRW,
 134         [8] = FLH | FRH,
 135         [9] = TC,
 136         [10] = FCH,
 137 };
 138
 139 struct cea_channel_speaker_allocation {
 140         int ca_index;
 141         int speakers[8];
 142
 143         /* derived values, just for convenience */
 144         int channels;
 145         int spk_mask;
 146 };
 147
 148 /*
 149  * ALSA sequence is:
 150  *
 151  *       surround40   surround41   surround50   surround51   surround71
 152  * ch0   front left   =            =            =            =
 153  * ch1   front right  =            =            =            =
 154  * ch2   rear left    =            =            =            =
 155  * ch3   rear right   =            =            =            =
 156  * ch4                LFE          center       center       center
 157  * ch5                                          LFE          LFE
 158  * ch6                                                       side left
 159  * ch7                                                       side right
 160  *
 161  * surround71 = {FL, FR, RLC, RRC, FC, LFE, RL, RR}
 162  */
 163 static int hdmi_channel_mapping[0x32][8] = {
 164         /* stereo */
 165         [0x00] = { 0x00, 0x11, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7 },
 166         /* 2.1 */
 167         [0x01] = { 0x00, 0x11, 0x22, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7 },
 168         /* Dolby Surround */
 169         [0x02] = { 0x00, 0x11, 0x23, 0xf2, 0xf4, 0xf5, 0xf6, 0xf7 },
 170         /* surround40 */
 171         [0x08] = { 0x00, 0x11, 0x24, 0x35, 0xf3, 0xf2, 0xf6, 0xf7 },
 172         /* 4ch */
 173         [0x03] = { 0x00, 0x11, 0x23, 0x32, 0x44, 0xf5, 0xf6, 0xf7 },
 174         /* surround41 */
 175         [0x09] = { 0x00, 0x11, 0x24, 0x34, 0x43, 0xf2, 0xf6, 0xf7 },
 176         /* surround50 */
 177         [0x0a] = { 0x00, 0x11, 0x24, 0x35, 0x43, 0xf2, 0xf6, 0xf7 },
 178         /* surround51 */
 179         [0x0b] = { 0x00, 0x11, 0x24, 0x35, 0x43, 0x52, 0xf6, 0xf7 },
 180         /* 7.1 */
 181         [0x13] = { 0x00, 0x11, 0x26, 0x37, 0x43, 0x52, 0x64, 0x75 },
 182 };
 183
 184 /*
 185  * This is an ordered list!
 186  *
 187  * The preceding ones have better chances to be selected by
 188  * hdmi_setup_channel_allocation().
 189  */
 190 static struct cea_channel_speaker_allocation channel_allocations[] = {
 191 /*                        channel:   7     6    5    4    3     2    1    0  */
 192 { .ca_index = 0x00,  .speakers = {   0,    0,   0,   0,   0,    0,  FR,  FL } },
 193                                  /* 2.1 */
 194 { .ca_index = 0x01,  .speakers = {   0,    0,   0,   0,   0,  LFE,  FR,  FL } },
 195                                  /* Dolby Surround */
 196 { .ca_index = 0x02,  .speakers = {   0,    0,   0,   0,  FC,    0,  FR,  FL } },
 197                                  /* surround40 */
 198 { .ca_index = 0x08,  .speakers = {   0,    0,  RR,  RL,   0,    0,  FR,  FL } },
 199                                  /* surround41 */
 200 { .ca_index = 0x09,  .speakers = {   0,    0,  RR,  RL,   0,  LFE,  FR,  FL } },
 201                                  /* surround50 */
 202 { .ca_index = 0x0a,  .speakers = {   0,    0,  RR,  RL,  FC,    0,  FR,  FL } },
 203                                  /* surround51 */
 204 { .ca_index = 0x0b,  .speakers = {   0,    0,  RR,  RL,  FC,  LFE,  FR,  FL } },
 205                                  /* 6.1 */
 206 { .ca_index = 0x0f,  .speakers = {   0,   RC,  RR,  RL,  FC,  LFE,  FR,  FL } },
 207                                  /* surround71 */
 208 { .ca_index = 0x13,  .speakers = { RRC,  RLC,  RR,  RL,  FC,  LFE,  FR,  FL } },
 209
 210 { .ca_index = 0x03,  .speakers = {   0,    0,   0,   0,  FC,  LFE,  FR,  FL } },
 211 { .ca_index = 0x04,  .speakers = {   0,    0,   0,  RC,   0,    0,  FR,  FL } },
 212 { .ca_index = 0x05,  .speakers = {   0,    0,   0,  RC,   0,  LFE,  FR,  FL } },
 213 { .ca_index = 0x06,  .speakers = {   0,    0,   0,  RC,  FC,    0,  FR,  FL } },
 214 { .ca_index = 0x07,  .speakers = {   0,    0,   0,  RC,  FC,  LFE,  FR,  FL } },
 215 { .ca_index = 0x0c,  .speakers = {   0,   RC,  RR,  RL,   0,    0,  FR,  FL } },
 216 { .ca_index = 0x0d,  .speakers = {   0,   RC,  RR,  RL,   0,  LFE,  FR,  FL } },
 217 { .ca_index = 0x0e,  .speakers = {   0,   RC,  RR,  RL,  FC,    0,  FR,  FL } },
 218 { .ca_index = 0x10,  .speakers = { RRC,  RLC,  RR,  RL,   0,    0,  FR,  FL } },
 219 { .ca_index = 0x11,  .speakers = { RRC,  RLC,  RR,  RL,   0,  LFE,  FR,  FL } },
 220 { .ca_index = 0x12,  .speakers = { RRC,  RLC,  RR,  RL,  FC,    0,  FR,  FL } },
 221 { .ca_index = 0x14,  .speakers = { FRC,  FLC,   0,   0,   0,    0,  FR,  FL } },
 222 { .ca_index = 0x15,  .speakers = { FRC,  FLC,   0,   0,   0,  LFE,  FR,  FL } },
 223 { .ca_index = 0x16,  .speakers = { FRC,  FLC,   0,   0,  FC,    0,  FR,  FL } },
 224 { .ca_index = 0x17,  .speakers = { FRC,  FLC,   0,   0,  FC,  LFE,  FR,  FL } },
 225 { .ca_index = 0x18,  .speakers = { FRC,  FLC,   0,  RC,   0,    0,  FR,  FL } },
 226 { .ca_index = 0x19,  .speakers = { FRC,  FLC,   0,  RC,   0,  LFE,  FR,  FL } },
 227 { .ca_index = 0x1a,  .speakers = { FRC,  FLC,   0,  RC,  FC,    0,  FR,  FL } },
 228 { .ca_index = 0x1b,  .speakers = { FRC,  FLC,   0,  RC,  FC,  LFE,  FR,  FL } },
 229 { .ca_index = 0x1c,  .speakers = { FRC,  FLC,  RR,  RL,   0,    0,  FR,  FL } },
 230 { .ca_index = 0x1d,  .speakers = { FRC,  FLC,  RR,  RL,   0,  LFE,  FR,  FL } },
 231 { .ca_index = 0x1e,  .speakers = { FRC,  FLC,  RR,  RL,  FC,    0,  FR,  FL } },
 232 { .ca_index = 0x1f,  .speakers = { FRC,  FLC,  RR,  RL,  FC,  LFE,  FR,  FL } },
 233 { .ca_index = 0x20,  .speakers = {   0,  FCH,  RR,  RL,  FC,    0,  FR,  FL } },
 234 { .ca_index = 0x21,  .speakers = {   0,  FCH,  RR,  RL,  FC,  LFE,  FR,  FL } },
 235 { .ca_index = 0x22,  .speakers = {  TC,    0,  RR,  RL,  FC,    0,  FR,  FL } },
 236 { .ca_index = 0x23,  .speakers = {  TC,    0,  RR,  RL,  FC,  LFE,  FR,  FL } },
 237 { .ca_index = 0x24,  .speakers = { FRH,  FLH,  RR,  RL,   0,    0,  FR,  FL } },
 238 { .ca_index = 0x25,  .speakers = { FRH,  FLH,  RR,  RL,   0,  LFE,  FR,  FL } },
 239 { .ca_index = 0x26,  .speakers = { FRW,  FLW,  RR,  RL,   0,    0,  FR,  FL } },
 240 { .ca_index = 0x27,  .speakers = { FRW,  FLW,  RR,  RL,   0,  LFE,  FR,  FL } },
 241 { .ca_index = 0x28,  .speakers = {  TC,   RC,  RR,  RL,  FC,    0,  FR,  FL } },
 242 { .ca_index = 0x29,  .speakers = {  TC,   RC,  RR,  RL,  FC,  LFE,  FR,  FL } },
 243 { .ca_index = 0x2a,  .speakers = { FCH,   RC,  RR,  RL,  FC,    0,  FR,  FL } },
 244 { .ca_index = 0x2b,  .speakers = { FCH,   RC,  RR,  RL,  FC,  LFE,  FR,  FL } },
 245 { .ca_index = 0x2c,  .speakers = {  TC,  FCH,  RR,  RL,  FC,    0,  FR,  FL } },
 246 { .ca_index = 0x2d,  .speakers = {  TC,  FCH,  RR,  RL,  FC,  LFE,  FR,  FL } },
 247 { .ca_index = 0x2e,  .speakers = { FRH,  FLH,  RR,  RL,  FC,    0,  FR,  FL } },
 248 { .ca_index = 0x2f,  .speakers = { FRH,  FLH,  RR,  RL,  FC,  LFE,  FR,  FL } },
 249 { .ca_index = 0x30,  .speakers = { FRW,  FLW,  RR,  RL,  FC,    0,  FR,  FL } },
 250 { .ca_index = 0x31,  .speakers = { FRW,  FLW,  RR,  RL,  FC,  LFE,  FR,  FL } },
 251 };
 252
 253 /*
 254  * HDA/HDMI auto parsing
 255  */
 256
 257 static int hda_node_index(hda_nid_t *nids, hda_nid_t nid)
 258 {
 259         int i;
 260
 261         for (i = 0; nids[i]; i++)
 262                 if (nids[i] == nid)
 263                         return i;
 264
 265         snd_printk(KERN_WARNING "HDMI: nid %d not registered\n", nid);
 266         return -EINVAL;
 267 }
 268
 269 static int intel_hdmi_read_pin_conn(struct hda_codec *codec, hda_nid_t pin_nid)
 270 {
 271         struct intel_hdmi_spec *spec = codec->spec;
 272         hda_nid_t conn_list[HDA_MAX_CONNECTIONS];
 273         int conn_len, curr;
 274         int index;
 275
 276         if (!(get_wcaps(codec, pin_nid) & AC_WCAP_CONN_LIST)) {
 277                 snd_printk(KERN_WARNING
 278                            "HDMI: pin %d wcaps %#x "
 279                            "does not support connection list\n",
 280                            pin_nid, get_wcaps(codec, pin_nid));
 281                 return -EINVAL;
 282         }
 283
 284         conn_len = snd_hda_get_connections(codec, pin_nid, conn_list,
 285                                            HDA_MAX_CONNECTIONS);
 286         if (conn_len > 1)
 287                 curr = snd_hda_codec_read(codec, pin_nid, 0,
 288                                           AC_VERB_GET_CONNECT_SEL, 0);
 289         else
 290                 curr = 0;
 291
 292         index = hda_node_index(spec->pin, pin_nid);
 293         if (index < 0)
 294                 return -EINVAL;
 295
 296         spec->pin_cvt[index] = conn_list[curr];
 297
 298         return 0;
 299 }
 300
 301 static void hdmi_get_show_eld(struct hda_codec *codec, hda_nid_t pin_nid,
 302                               struct hdmi_eld *eld)
 303 {
 304         if (!snd_hdmi_get_eld(eld, codec, pin_nid))
 305                 snd_hdmi_show_eld(eld);
 306 }
 307
 308 static void hdmi_present_sense(struct hda_codec *codec, hda_nid_t pin_nid,
 309                                struct hdmi_eld *eld)
 310 {
 311         int present = snd_hda_pin_sense(codec, pin_nid);
 312
 313         eld->monitor_present    = !!(present & AC_PINSENSE_PRESENCE);
 314         eld->eld_valid          = !!(present & AC_PINSENSE_ELDV);
 315
 316         if (present & AC_PINSENSE_ELDV)
 317                 hdmi_get_show_eld(codec, pin_nid, eld);
 318 }
 319
 320 static int intel_hdmi_add_pin(struct hda_codec *codec, hda_nid_t pin_nid)
 321 {
 322         struct intel_hdmi_spec *spec = codec->spec;
 323
 324         if (spec->num_pins >= INTEL_HDMI_PINS) {
 325                 snd_printk(KERN_WARNING
 326                            "HDMI: no space for pin %d \n", pin_nid);
 327                 return -EINVAL;
 328         }
 329
 330         hdmi_present_sense(codec, pin_nid, &spec->sink_eld[spec->num_pins]);
 331
 332         spec->pin[spec->num_pins] = pin_nid;
 333         spec->num_pins++;
 334
 335         /*
 336          * It is assumed that converter nodes come first in the node list and
 337          * hence have been registered and usable now.
 338          */
 339         return intel_hdmi_read_pin_conn(codec, pin_nid);
 340 }
 341
 342 static int intel_hdmi_add_cvt(struct hda_codec *codec, hda_nid_t nid)
 343 {
 344         struct intel_hdmi_spec *spec = codec->spec;
 345
 346         if (spec->num_cvts >= INTEL_HDMI_CVTS) {
 347                 snd_printk(KERN_WARNING
 348                            "HDMI: no space for converter %d \n", nid);
 349                 return -EINVAL;
 350         }
 351
 352         spec->cvt[spec->num_cvts] = nid;
 353         spec->num_cvts++;
 354
 355         return 0;
 356 }
 357
 358 static int intel_hdmi_parse_codec(struct hda_codec *codec)
 359 {
 360         hda_nid_t nid;
 361         int i, nodes;
 362
 363         nodes = snd_hda_get_sub_nodes(codec, codec->afg, &nid);
 364         if (!nid || nodes < 0) {
 365                 snd_printk(KERN_WARNING "HDMI: failed to get afg sub nodes\n");
 366                 return -EINVAL;
 367         }
 368
 369         for (i = 0; i < nodes; i++, nid++) {
 370                 unsigned int caps;
 371                 unsigned int type;
 372
 373                 caps = snd_hda_param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP);
 374                 type = get_wcaps_type(caps);
 375
 376                 if (!(caps & AC_WCAP_DIGITAL))
 377                         continue;
 378
 379                 switch (type) {
 380                 case AC_WID_AUD_OUT:
 381                         if (intel_hdmi_add_cvt(codec, nid) < 0)
 382                                 return -EINVAL;
 383                         break;
 384                 case AC_WID_PIN:
 385                         caps = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
 386                         if (!(caps & (AC_PINCAP_HDMI | AC_PINCAP_DP)))
 387                                 continue;
 388                         if (intel_hdmi_add_pin(codec, nid) < 0)
 389                                 return -EINVAL;
 390                         break;
 391                 }
 392         }
 393
 394         /*
 395          * G45/IbexPeak don't support EPSS: the unsolicited pin hot plug event
 396          * can be lost and presence sense verb will become inaccurate if the
 397          * HDA link is powered off at hot plug or hw initialization time.
 398          */
 399 #ifdef CONFIG_SND_HDA_POWER_SAVE
 400         if (!(snd_hda_param_read(codec, codec->afg, AC_PAR_POWER_STATE) &
 401               AC_PWRST_EPSS))
 402                 codec->bus->power_keep_link_on = 1;
 403 #endif
 404
 405         return 0;
 406 }
 407
 408 /*
 409  * HDMI routines
 410  */
 411
 412 #ifdef BE_PARANOID
 413 static void hdmi_get_dip_index(struct hda_codec *codec, hda_nid_t pin_nid,
 414                                 int *packet_index, int *byte_index)
 415 {
 416         int val;
 417
 418         val = snd_hda_codec_read(codec, pin_nid, 0,
 419                                  AC_VERB_GET_HDMI_DIP_INDEX, 0);
 420
 421         *packet_index = val >> 5;
 422         *byte_index = val & 0x1f;
 423 }
 424 #endif
 425
 426 static void hdmi_set_dip_index(struct hda_codec *codec, hda_nid_t pin_nid,
 427                                 int packet_index, int byte_index)
 428 {
 429         int val;
 430
 431         val = (packet_index << 5) | (byte_index & 0x1f);
 432
 433         snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val);
 434 }
 435
 436 static void hdmi_write_dip_byte(struct hda_codec *codec, hda_nid_t pin_nid,
 437                                 unsigned char val)
 438 {
 439         snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_DATA, val);
 440 }
 441
 442 static void hdmi_enable_output(struct hda_codec *codec, hda_nid_t pin_nid)
 443 {
 444         /* Unmute */
 445         if (get_wcaps(codec, pin_nid) & AC_WCAP_OUT_AMP)
 446                 snd_hda_codec_write(codec, pin_nid, 0,
 447                                 AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
 448         /* Enable pin out */
 449         snd_hda_codec_write(codec, pin_nid, 0,
 450                             AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
 451 }
 452
 453 /*
 454  * Enable Audio InfoFrame Transmission
 455  */
 456 static void hdmi_start_infoframe_trans(struct hda_codec *codec,
 457                                        hda_nid_t pin_nid)
 458 {
 459         hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
 460         snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_XMIT,
 461                                                 AC_DIPXMIT_BEST);
 462 }
 463
 464 /*
 465  * Disable Audio InfoFrame Transmission
 466  */
 467 static void hdmi_stop_infoframe_trans(struct hda_codec *codec,
 468                                       hda_nid_t pin_nid)
 469 {
 470         hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
 471         snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_XMIT,
 472                                                 AC_DIPXMIT_DISABLE);
 473 }
 474
 475 static int hdmi_get_channel_count(struct hda_codec *codec, hda_nid_t nid)
 476 {
 477         return 1 + snd_hda_codec_read(codec, nid, 0,
 478                                         AC_VERB_GET_CVT_CHAN_COUNT, 0);
 479 }
 480
 481 static void hdmi_set_channel_count(struct hda_codec *codec,
 482                                    hda_nid_t nid, int chs)
 483 {
 484         if (chs != hdmi_get_channel_count(codec, nid))
 485                 snd_hda_codec_write(codec, nid, 0,
 486                                     AC_VERB_SET_CVT_CHAN_COUNT, chs - 1);
 487 }
 488
 489 static void hdmi_debug_channel_mapping(struct hda_codec *codec,
 490                                        hda_nid_t pin_nid)
 491 {
 492 #ifdef CONFIG_SND_DEBUG_VERBOSE
 493         int i;
 494         int slot;
 495
 496         for (i = 0; i < 8; i++) {
 497                 slot = snd_hda_codec_read(codec, pin_nid, 0,
 498                                                 AC_VERB_GET_HDMI_CHAN_SLOT, i);
 499                 printk(KERN_DEBUG "HDMI: ASP channel %d => slot %d\n",
 500                                                 slot >> 4, slot & 0xf);
 501         }
 502 #endif
 503 }
 504
 505
 506 /*
 507  * Audio InfoFrame routines
 508  */
 509
 510 static void hdmi_debug_dip_size(struct hda_codec *codec, hda_nid_t pin_nid)
 511 {
 512 #ifdef CONFIG_SND_DEBUG_VERBOSE
 513         int i;
 514         int size;
 515
 516         size = snd_hdmi_get_eld_size(codec, pin_nid);
 517         printk(KERN_DEBUG "HDMI: ELD buf size is %d\n", size);
 518
 519         for (i = 0; i < 8; i++) {
 520                 size = snd_hda_codec_read(codec, pin_nid, 0,
 521                                                 AC_VERB_GET_HDMI_DIP_SIZE, i);
 522                 printk(KERN_DEBUG "HDMI: DIP GP[%d] buf size is %d\n", i, size);
 523         }
 524 #endif
 525 }
 526
 527 static void hdmi_clear_dip_buffers(struct hda_codec *codec, hda_nid_t pin_nid)
 528 {
 529 #ifdef BE_PARANOID
 530         int i, j;
 531         int size;
 532         int pi, bi;
 533         for (i = 0; i < 8; i++) {
 534                 size = snd_hda_codec_read(codec, pin_nid, 0,
 535                                                 AC_VERB_GET_HDMI_DIP_SIZE, i);
 536                 if (size == 0)
 537                         continue;
 538
 539                 hdmi_set_dip_index(codec, pin_nid, i, 0x0);
 540                 for (j = 1; j < 1000; j++) {
 541                         hdmi_write_dip_byte(codec, pin_nid, 0x0);
 542                         hdmi_get_dip_index(codec, pin_nid, &pi, &bi);
 543                         if (pi != i)
 544                                 snd_printd(KERN_INFO "dip index %d: %d != %d\n",
 545                                                 bi, pi, i);
 546                         if (bi == 0) /* byte index wrapped around */
 547                                 break;
 548                 }
 549                 snd_printd(KERN_INFO
 550                         "HDMI: DIP GP[%d] buf reported size=%d, written=%d\n",
 551                         i, size, j);
 552         }
 553 #endif
 554 }
 555
 556 static void hdmi_checksum_audio_infoframe(struct hdmi_audio_infoframe *ai)
 557 {
 558         u8 *bytes = (u8 *)ai;
 559         u8 sum = 0;
 560         int i;
 561
 562         ai->checksum = 0;
 563
 564         for (i = 0; i < sizeof(*ai); i++)
 565                 sum += bytes[i];
 566
 567         ai->checksum = - sum;
 568 }
 569
 570 static void hdmi_fill_audio_infoframe(struct hda_codec *codec,
 571                                       hda_nid_t pin_nid,
 572                                       struct hdmi_audio_infoframe *ai)
 573 {
 574         u8 *bytes = (u8 *)ai;
 575         int i;
 576
 577         hdmi_debug_dip_size(codec, pin_nid);
 578         hdmi_clear_dip_buffers(codec, pin_nid); /* be paranoid */
 579
 580         hdmi_checksum_audio_infoframe(ai);
 581
 582         hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
 583         for (i = 0; i < sizeof(*ai); i++)
 584                 hdmi_write_dip_byte(codec, pin_nid, bytes[i]);
 585 }
 586
 587 /*
 588  * Compute derived values in channel_allocations[].
 589  */
 590 static void init_channel_allocations(void)
 591 {
 592         int i, j;
 593         struct cea_channel_speaker_allocation *p;
 594
 595         for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
 596                 p = channel_allocations + i;
 597                 p->channels = 0;
 598                 p->spk_mask = 0;
 599                 for (j = 0; j < ARRAY_SIZE(p->speakers); j++)
 600                         if (p->speakers[j]) {
 601                                 p->channels++;
 602                                 p->spk_mask |= p->speakers[j];
 603                         }
 604         }
 605 }
 606
 607 /*
 608  * The transformation takes two steps:
 609  *
 610  *      eld->spk_alloc => (eld_speaker_allocation_bits[]) => spk_mask
 611  *            spk_mask => (channel_allocations[])         => ai->CA
 612  *
 613  * TODO: it could select the wrong CA from multiple candidates.
 614 */
 615 static int hdmi_setup_channel_allocation(struct hda_codec *codec, hda_nid_t nid,
 616                                          struct hdmi_audio_infoframe *ai)
 617 {
 618         struct intel_hdmi_spec *spec = codec->spec;
 619         struct hdmi_eld *eld;
 620         int i;
 621         int spk_mask = 0;
 622         int channels = 1 + (ai->CC02_CT47 & 0x7);
 623         char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE];
 624
 625         /*
 626          * CA defaults to 0 for basic stereo audio
 627          */
 628         if (channels <= 2)
 629                 return 0;
 630
 631         i = hda_node_index(spec->pin_cvt, nid);
 632         if (i < 0)
 633                 return 0;
 634         eld = &spec->sink_eld[i];
 635
 636         /*
 637          * HDMI sink's ELD info cannot always be retrieved for now, e.g.
 638          * in console or for audio devices. Assume the highest speakers
 639          * configuration, to _not_ prohibit multi-channel audio playback.
 640          */
 641         if (!eld->spk_alloc)
 642                 eld->spk_alloc = 0xffff;
 643
 644         /*
 645          * expand ELD's speaker allocation mask
 646          *
 647          * ELD tells the speaker mask in a compact(paired) form,
 648          * expand ELD's notions to match the ones used by Audio InfoFrame.
 649          */
 650         for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) {
 651                 if (eld->spk_alloc & (1 << i))
 652                         spk_mask |= eld_speaker_allocation_bits[i];
 653         }
 654
 655         /* search for the first working match in the CA table */
 656         for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
 657                 if (channels == channel_allocations[i].channels &&
 658                     (spk_mask & channel_allocations[i].spk_mask) ==
 659                                 channel_allocations[i].spk_mask) {
 660                         ai->CA = channel_allocations[i].ca_index;
 661                         break;
 662                 }
 663         }
 664
 665         snd_print_channel_allocation(eld->spk_alloc, buf, sizeof(buf));
 666         snd_printdd(KERN_INFO
 667                         "HDMI: select CA 0x%x for %d-channel allocation: %s\n",
 668                         ai->CA, channels, buf);
 669
 670         return ai->CA;
 671 }
 672
 673 static void hdmi_setup_channel_mapping(struct hda_codec *codec,
 674                                        hda_nid_t pin_nid,
 675                                        struct hdmi_audio_infoframe *ai)
 676 {
 677         int i;
 678         int ca = ai->CA;
 679         int err;
 680
 681         if (hdmi_channel_mapping[ca][1] == 0) {
 682                 for (i = 0; i < channel_allocations[ca].channels; i++)
 683                         hdmi_channel_mapping[ca][i] = i | (i << 4);
 684                 for (; i < 8; i++)
 685                         hdmi_channel_mapping[ca][i] = 0xf | (i << 4);
 686         }
 687
 688         for (i = 0; i < 8; i++) {
 689                 err = snd_hda_codec_write(codec, pin_nid, 0,
 690                                           AC_VERB_SET_HDMI_CHAN_SLOT,
 691                                           hdmi_channel_mapping[ca][i]);
 692                 if (err) {
 693                         snd_printdd(KERN_INFO "HDMI: channel mapping failed\n");
 694                         break;
 695                 }
 696         }
 697
 698         hdmi_debug_channel_mapping(codec, pin_nid);
 699 }
 700
 701 static bool hdmi_infoframe_uptodate(struct hda_codec *codec, hda_nid_t pin_nid,
 702                                     struct hdmi_audio_infoframe *ai)
 703 {
 704         u8 *bytes = (u8 *)ai;
 705         u8 val;
 706         int i;
 707
 708         if (snd_hda_codec_read(codec, pin_nid, 0, AC_VERB_GET_HDMI_DIP_XMIT, 0)
 709                                                             != AC_DIPXMIT_BEST)
 710                 return false;
 711
 712         hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
 713         for (i = 0; i < sizeof(*ai); i++) {
 714                 val = snd_hda_codec_read(codec, pin_nid, 0,
 715                                          AC_VERB_GET_HDMI_DIP_DATA, 0);
 716                 if (val != bytes[i])
 717                         return false;
 718         }
 719
 720         return true;
 721 }
 722
 723 static void hdmi_setup_audio_infoframe(struct hda_codec *codec, hda_nid_t nid,
 724                                         struct snd_pcm_substream *substream)
 725 {
 726         struct intel_hdmi_spec *spec = codec->spec;
 727         hda_nid_t pin_nid;
 728         int i;
 729         struct hdmi_audio_infoframe ai = {
 730                 .type           = 0x84,
 731                 .ver            = 0x01,
 732                 .len            = 0x0a,
 733                 .CC02_CT47      = substream->runtime->channels - 1,
 734         };
 735
 736         hdmi_setup_channel_allocation(codec, nid, &ai);
 737
 738         for (i = 0; i < spec->num_pins; i++) {
 739                 if (spec->pin_cvt[i] != nid)
 740                         continue;
 741                 if (!spec->sink_eld[i].monitor_present)
 742                         continue;
 743
 744                 pin_nid = spec->pin[i];
 745                 if (!hdmi_infoframe_uptodate(codec, pin_nid, &ai)) {
 746                         hdmi_setup_channel_mapping(codec, pin_nid, &ai);
 747                         hdmi_stop_infoframe_trans(codec, pin_nid);
 748                         hdmi_fill_audio_infoframe(codec, pin_nid, &ai);
 749                         hdmi_start_infoframe_trans(codec, pin_nid);
 750                 }
 751         }
 752 }
 753
 754
 755 /*
 756  * Unsolicited events
 757  */
 758
 759 static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
 760 {
 761         struct intel_hdmi_spec *spec = codec->spec;
 762         int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
 763         int pind = !!(res & AC_UNSOL_RES_PD);
 764         int eldv = !!(res & AC_UNSOL_RES_ELDV);
 765         int index;
 766
 767         printk(KERN_INFO
 768                 "HDMI hot plug event: Pin=%d Presence_Detect=%d ELD_Valid=%d\n",
 769                 tag, pind, eldv);
 770
 771         index = hda_node_index(spec->pin, tag);
 772         if (index < 0)
 773                 return;
 774
 775         spec->sink_eld[index].monitor_present = pind;
 776         spec->sink_eld[index].eld_valid = eldv;
 777
 778         if (pind && eldv) {
 779                 hdmi_get_show_eld(codec, spec->pin[index], &spec->sink_eld[index]);
 780                 /* TODO: do real things about ELD */
 781         }
 782 }
 783
 784 static void hdmi_non_intrinsic_event(struct hda_codec *codec, unsigned int res)
 785 {
 786         int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
 787         int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
 788         int cp_state = !!(res & AC_UNSOL_RES_CP_STATE);
 789         int cp_ready = !!(res & AC_UNSOL_RES_CP_READY);
 790
 791         printk(KERN_INFO
 792                 "HDMI CP event: PIN=%d SUBTAG=0x%x CP_STATE=%d CP_READY=%d\n",
 793                 tag,
 794                 subtag,
 795                 cp_state,
 796                 cp_ready);
 797
 798         /* TODO */
 799         if (cp_state)
 800                 ;
 801         if (cp_ready)
 802                 ;
 803 }
 804
 805
 806 static void intel_hdmi_unsol_event(struct hda_codec *codec, unsigned int res)
 807 {
 808         struct intel_hdmi_spec *spec = codec->spec;
 809         int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
 810         int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
 811
 812         if (hda_node_index(spec->pin, tag) < 0) {
 813                 snd_printd(KERN_INFO "Unexpected HDMI event tag 0x%x\n", tag);
 814                 return;
 815         }
 816
 817         if (subtag == 0)
 818                 hdmi_intrinsic_event(codec, res);
 819         else
 820                 hdmi_non_intrinsic_event(codec, res);
 821 }
 822
 823 /*
 824  * Callbacks
 825  */
 826
 827 static void hdmi_setup_stream(struct hda_codec *codec, hda_nid_t nid,
 828                               u32 stream_tag, int format)
 829 {
 830         int tag;
 831         int fmt;
 832
 833         tag = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONV, 0) >> 4;
 834         fmt = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_STREAM_FORMAT, 0);
 835
 836         snd_printdd("hdmi_setup_stream: "
 837                     "NID=0x%x, %sstream=0x%x, %sformat=0x%x\n",
 838                     nid,
 839                     tag == stream_tag ? "" : "new-",
 840                     stream_tag,
 841                     fmt == format ? "" : "new-",
 842                     format);
 843
 844         if (tag != stream_tag)
 845                 snd_hda_codec_write(codec, nid, 0,
 846                                     AC_VERB_SET_CHANNEL_STREAMID, stream_tag << 4);
 847         if (fmt != format)
 848                 snd_hda_codec_write(codec, nid, 0,
 849                                     AC_VERB_SET_STREAM_FORMAT, format);
 850 }
 851
 852 static int intel_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
 853                                            struct hda_codec *codec,
 854                                            unsigned int stream_tag,
 855                                            unsigned int format,
 856                                            struct snd_pcm_substream *substream)
 857 {
 858         hdmi_set_channel_count(codec, hinfo->nid,
 859                                substream->runtime->channels);
 860
 861         hdmi_setup_audio_infoframe(codec, hinfo->nid, substream);
 862
 863         hdmi_setup_stream(codec, hinfo->nid, stream_tag, format);
 864         return 0;
 865 }
 866
 867 static int intel_hdmi_playback_pcm_cleanup(struct hda_pcm_stream *hinfo,
 868                                            struct hda_codec *codec,
 869                                            struct snd_pcm_substream *substream)
 870 {
 871         return 0;
 872 }
 873
 874 static struct hda_pcm_stream intel_hdmi_pcm_playback = {
 875         .substreams = 1,
 876         .channels_min = 2,
 877         .ops = {
 878                 .prepare = intel_hdmi_playback_pcm_prepare,
 879                 .cleanup = intel_hdmi_playback_pcm_cleanup,
 880         },
 881 };
 882
 883 static int intel_hdmi_build_pcms(struct hda_codec *codec)
 884 {
 885         struct intel_hdmi_spec *spec = codec->spec;
 886         struct hda_pcm *info = spec->pcm_rec;
 887         int i;
 888
 889         codec->num_pcms = spec->num_cvts;
 890         codec->pcm_info = info;
 891
 892         for (i = 0; i < codec->num_pcms; i++, info++) {
 893                 unsigned int chans;
 894
 895                 chans = get_wcaps(codec, spec->cvt[i]);
 896                 chans = get_wcaps_channels(chans);
 897
 898                 info->name = intel_hdmi_pcm_names[i];
 899                 info->pcm_type = HDA_PCM_TYPE_HDMI;
 900                 info->stream[SNDRV_PCM_STREAM_PLAYBACK] =
 901                                                         intel_hdmi_pcm_playback;
 902                 info->stream[SNDRV_PCM_STREAM_PLAYBACK].nid = spec->cvt[i];
 903                 info->stream[SNDRV_PCM_STREAM_PLAYBACK].channels_max = chans;
 904         }
 905
 906         return 0;
 907 }
 908
 909 static int intel_hdmi_build_controls(struct hda_codec *codec)
 910 {
 911         struct intel_hdmi_spec *spec = codec->spec;
 912         int err;
 913         int i;
 914
 915         for (i = 0; i < codec->num_pcms; i++) {
 916                 err = snd_hda_create_spdif_out_ctls(codec, spec->cvt[i]);
 917                 if (err < 0)
 918                         return err;
 919         }
 920
 921         return 0;
 922 }
 923
 924 static int intel_hdmi_init(struct hda_codec *codec)
 925 {
 926         struct intel_hdmi_spec *spec = codec->spec;
 927         int i;
 928
 929         for (i = 0; spec->pin[i]; i++) {
 930                 hdmi_enable_output(codec, spec->pin[i]);
 931                 snd_hda_codec_write(codec, spec->pin[i], 0,
 932                                     AC_VERB_SET_UNSOLICITED_ENABLE,
 933                                     AC_USRSP_EN | spec->pin[i]);
 934         }
 935         return 0;
 936 }
 937
 938 static void intel_hdmi_free(struct hda_codec *codec)
 939 {
 940         struct intel_hdmi_spec *spec = codec->spec;
 941         int i;
 942
 943         for (i = 0; i < spec->num_pins; i++)
 944                 snd_hda_eld_proc_free(codec, &spec->sink_eld[i]);
 945
 946         kfree(spec);
 947 }
 948
 949 static struct hda_codec_ops intel_hdmi_patch_ops = {
 950         .init                   = intel_hdmi_init,
 951         .free                   = intel_hdmi_free,
 952         .build_pcms             = intel_hdmi_build_pcms,
 953         .build_controls         = intel_hdmi_build_controls,
 954         .unsol_event            = intel_hdmi_unsol_event,
 955 };
 956
 957 static int patch_intel_hdmi(struct hda_codec *codec)
 958 {
 959         struct intel_hdmi_spec *spec;
 960         int i;
 961
 962         spec = kzalloc(sizeof(*spec), GFP_KERNEL);
 963         if (spec == NULL)
 964                 return -ENOMEM;
 965
 966         codec->spec = spec;
 967         if (intel_hdmi_parse_codec(codec) < 0) {
 968                 codec->spec = NULL;
 969                 kfree(spec);
 970                 return -EINVAL;
 971         }
 972         codec->patch_ops = intel_hdmi_patch_ops;
 973
 974         for (i = 0; i < spec->num_pins; i++)
 975                 snd_hda_eld_proc_new(codec, &spec->sink_eld[i], i);
 976
 977         init_channel_allocations();
 978
 979         return 0;
 980 }
 981
 982 static struct hda_codec_preset snd_hda_preset_intelhdmi[] = {
 983         { .id = 0x808629fb, .name = "G45 DEVCL",  .patch = patch_intel_hdmi },
 984         { .id = 0x80862801, .name = "G45 DEVBLC", .patch = patch_intel_hdmi },
 985         { .id = 0x80862802, .name = "G45 DEVCTG", .patch = patch_intel_hdmi },
 986         { .id = 0x80862803, .name = "G45 DEVELK", .patch = patch_intel_hdmi },
 987         { .id = 0x80862804, .name = "G45 DEVIBX", .patch = patch_intel_hdmi },
 988         { .id = 0x80860054, .name = "Q57 DEVIBX", .patch = patch_intel_hdmi },
 989         { .id = 0x10951392, .name = "SiI1392 HDMI",     .patch = patch_intel_hdmi },
 990         {} /* terminator */
 991 };
 992
 993 MODULE_ALIAS("snd-hda-codec-id:808629fb");
 994 MODULE_ALIAS("snd-hda-codec-id:80862801");
 995 MODULE_ALIAS("snd-hda-codec-id:80862802");
 996 MODULE_ALIAS("snd-hda-codec-id:80862803");
 997 MODULE_ALIAS("snd-hda-codec-id:80862804");
 998 MODULE_ALIAS("snd-hda-codec-id:80860054");
 999 MODULE_ALIAS("snd-hda-codec-id:10951392");
1000
1001 MODULE_LICENSE("GPL");
1002 MODULE_DESCRIPTION("Intel HDMI HD-audio codec");
1003
1004 static struct hda_codec_preset_list intel_list = {
1005         .preset = snd_hda_preset_intelhdmi,
1006         .owner = THIS_MODULE,
1007 };
1008
1009 static int __init patch_intelhdmi_init(void)
1010 {
1011         return snd_hda_add_codec_preset(&intel_list);
1012 }
1013
1014 static void __exit patch_intelhdmi_exit(void)
1015 {
1016         snd_hda_delete_codec_preset(&intel_list);
1017 }
1018
1019 module_init(patch_intelhdmi_init)
1020 module_exit(patch_intelhdmi_exit)