sound/soc/codecs/hdmi-codec.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * ALSA SoC codec for HDMI encoder drivers
   4  * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
   5  * Author: Jyri Sarha <jsarha@ti.com>
   6  */
   7 #include <linux/module.h>
   8 #include <linux/string.h>
   9 #include <sound/core.h>
  10 #include <sound/jack.h>
  11 #include <sound/pcm.h>
  12 #include <sound/pcm_params.h>
  13 #include <sound/soc.h>
  14 #include <sound/tlv.h>
  15 #include <sound/pcm_drm_eld.h>
  16 #include <sound/hdmi-codec.h>
  17 #include <sound/pcm_iec958.h>
  18
  19 #include <drm/drm_crtc.h> /* This is only to get MAX_ELD_BYTES */
  20
  21 #define HDMI_CODEC_CHMAP_IDX_UNKNOWN  -1
  22
  23 struct hdmi_codec_channel_map_table {
  24         unsigned char map;      /* ALSA API channel map position */
  25 };
  26
  27 /*
  28  * CEA speaker placement for HDMI 1.4:
  29  *
  30  *  FL  FLC   FC   FRC   FR   FRW
  31  *
  32  *                                  LFE
  33  *
  34  *  RL  RLC   RC   RRC   RR
  35  *
  36  *  Speaker placement has to be extended to support HDMI 2.0
  37  */
  38 enum hdmi_codec_cea_spk_placement {
  39         FL  = BIT(0),   /* Front Left           */
  40         FC  = BIT(1),   /* Front Center         */
  41         FR  = BIT(2),   /* Front Right          */
  42         FLC = BIT(3),   /* Front Left Center    */
  43         FRC = BIT(4),   /* Front Right Center   */
  44         RL  = BIT(5),   /* Rear Left            */
  45         RC  = BIT(6),   /* Rear Center          */
  46         RR  = BIT(7),   /* Rear Right           */
  47         RLC = BIT(8),   /* Rear Left Center     */
  48         RRC = BIT(9),   /* Rear Right Center    */
  49         LFE = BIT(10),  /* Low Frequency Effect */
  50 };
  51
  52 /*
  53  * cea Speaker allocation structure
  54  */
  55 struct hdmi_codec_cea_spk_alloc {
  56         const int ca_id;
  57         unsigned int n_ch;
  58         unsigned long mask;
  59 };
  60
  61 /* Channel maps  stereo HDMI */
  62 static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = {
  63         { .channels = 2,
  64           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
  65         { }
  66 };
  67
  68 /* Channel maps for multi-channel playbacks, up to 8 n_ch */
  69 static const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = {
  70         { .channels = 2, /* CA_ID 0x00 */
  71           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
  72         { .channels = 4, /* CA_ID 0x01 */
  73           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  74                    SNDRV_CHMAP_NA } },
  75         { .channels = 4, /* CA_ID 0x02 */
  76           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  77                    SNDRV_CHMAP_FC } },
  78         { .channels = 4, /* CA_ID 0x03 */
  79           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  80                    SNDRV_CHMAP_FC } },
  81         { .channels = 6, /* CA_ID 0x04 */
  82           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  83                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  84         { .channels = 6, /* CA_ID 0x05 */
  85           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  86                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  87         { .channels = 6, /* CA_ID 0x06 */
  88           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  89                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  90         { .channels = 6, /* CA_ID 0x07 */
  91           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  92                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  93         { .channels = 6, /* CA_ID 0x08 */
  94           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  95                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
  96         { .channels = 6, /* CA_ID 0x09 */
  97           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  98                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
  99         { .channels = 6, /* CA_ID 0x0A */
 100           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 101                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
 102         { .channels = 6, /* CA_ID 0x0B */
 103           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 104                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
 105         { .channels = 8, /* CA_ID 0x0C */
 106           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 107                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 108                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 109         { .channels = 8, /* CA_ID 0x0D */
 110           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 111                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 112                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 113         { .channels = 8, /* CA_ID 0x0E */
 114           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 115                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 116                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 117         { .channels = 8, /* CA_ID 0x0F */
 118           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 119                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 120                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 121         { .channels = 8, /* CA_ID 0x10 */
 122           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 123                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 124                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 125         { .channels = 8, /* CA_ID 0x11 */
 126           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 127                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 128                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 129         { .channels = 8, /* CA_ID 0x12 */
 130           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 131                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 132                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 133         { .channels = 8, /* CA_ID 0x13 */
 134           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 135                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 136                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 137         { .channels = 8, /* CA_ID 0x14 */
 138           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 139                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 140                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 141         { .channels = 8, /* CA_ID 0x15 */
 142           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 143                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 144                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 145         { .channels = 8, /* CA_ID 0x16 */
 146           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 147                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 148                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 149         { .channels = 8, /* CA_ID 0x17 */
 150           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 151                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 152                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 153         { .channels = 8, /* CA_ID 0x18 */
 154           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 155                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 156                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 157         { .channels = 8, /* CA_ID 0x19 */
 158           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 159                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 160                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 161         { .channels = 8, /* CA_ID 0x1A */
 162           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 163                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 164                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 165         { .channels = 8, /* CA_ID 0x1B */
 166           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 167                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 168                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 169         { .channels = 8, /* CA_ID 0x1C */
 170           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 171                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 172                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 173         { .channels = 8, /* CA_ID 0x1D */
 174           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 175                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 176                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 177         { .channels = 8, /* CA_ID 0x1E */
 178           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 179                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 180                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 181         { .channels = 8, /* CA_ID 0x1F */
 182           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 183                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 184                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 185         { }
 186 };
 187
 188 /*
 189  * hdmi_codec_channel_alloc: speaker configuration available for CEA
 190  *
 191  * This is an ordered list that must match with hdmi_codec_8ch_chmaps struct
 192  * The preceding ones have better chances to be selected by
 193  * hdmi_codec_get_ch_alloc_table_idx().
 194  */
 195 static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = {
 196         { .ca_id = 0x00, .n_ch = 2,
 197           .mask = FL | FR},
 198         /* 2.1 */
 199         { .ca_id = 0x01, .n_ch = 4,
 200           .mask = FL | FR | LFE},
 201         /* Dolby Surround */
 202         { .ca_id = 0x02, .n_ch = 4,
 203           .mask = FL | FR | FC },
 204         /* surround51 */
 205         { .ca_id = 0x0b, .n_ch = 6,
 206           .mask = FL | FR | LFE | FC | RL | RR},
 207         /* surround40 */
 208         { .ca_id = 0x08, .n_ch = 6,
 209           .mask = FL | FR | RL | RR },
 210         /* surround41 */
 211         { .ca_id = 0x09, .n_ch = 6,
 212           .mask = FL | FR | LFE | RL | RR },
 213         /* surround50 */
 214         { .ca_id = 0x0a, .n_ch = 6,
 215           .mask = FL | FR | FC | RL | RR },
 216         /* 6.1 */
 217         { .ca_id = 0x0f, .n_ch = 8,
 218           .mask = FL | FR | LFE | FC | RL | RR | RC },
 219         /* surround71 */
 220         { .ca_id = 0x13, .n_ch = 8,
 221           .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC },
 222         /* others */
 223         { .ca_id = 0x03, .n_ch = 8,
 224           .mask = FL | FR | LFE | FC },
 225         { .ca_id = 0x04, .n_ch = 8,
 226           .mask = FL | FR | RC},
 227         { .ca_id = 0x05, .n_ch = 8,
 228           .mask = FL | FR | LFE | RC },
 229         { .ca_id = 0x06, .n_ch = 8,
 230           .mask = FL | FR | FC | RC },
 231         { .ca_id = 0x07, .n_ch = 8,
 232           .mask = FL | FR | LFE | FC | RC },
 233         { .ca_id = 0x0c, .n_ch = 8,
 234           .mask = FL | FR | RC | RL | RR },
 235         { .ca_id = 0x0d, .n_ch = 8,
 236           .mask = FL | FR | LFE | RL | RR | RC },
 237         { .ca_id = 0x0e, .n_ch = 8,
 238           .mask = FL | FR | FC | RL | RR | RC },
 239         { .ca_id = 0x10, .n_ch = 8,
 240           .mask = FL | FR | RL | RR | RLC | RRC },
 241         { .ca_id = 0x11, .n_ch = 8,
 242           .mask = FL | FR | LFE | RL | RR | RLC | RRC },
 243         { .ca_id = 0x12, .n_ch = 8,
 244           .mask = FL | FR | FC | RL | RR | RLC | RRC },
 245         { .ca_id = 0x14, .n_ch = 8,
 246           .mask = FL | FR | FLC | FRC },
 247         { .ca_id = 0x15, .n_ch = 8,
 248           .mask = FL | FR | LFE | FLC | FRC },
 249         { .ca_id = 0x16, .n_ch = 8,
 250           .mask = FL | FR | FC | FLC | FRC },
 251         { .ca_id = 0x17, .n_ch = 8,
 252           .mask = FL | FR | LFE | FC | FLC | FRC },
 253         { .ca_id = 0x18, .n_ch = 8,
 254           .mask = FL | FR | RC | FLC | FRC },
 255         { .ca_id = 0x19, .n_ch = 8,
 256           .mask = FL | FR | LFE | RC | FLC | FRC },
 257         { .ca_id = 0x1a, .n_ch = 8,
 258           .mask = FL | FR | RC | FC | FLC | FRC },
 259         { .ca_id = 0x1b, .n_ch = 8,
 260           .mask = FL | FR | LFE | RC | FC | FLC | FRC },
 261         { .ca_id = 0x1c, .n_ch = 8,
 262           .mask = FL | FR | RL | RR | FLC | FRC },
 263         { .ca_id = 0x1d, .n_ch = 8,
 264           .mask = FL | FR | LFE | RL | RR | FLC | FRC },
 265         { .ca_id = 0x1e, .n_ch = 8,
 266           .mask = FL | FR | FC | RL | RR | FLC | FRC },
 267         { .ca_id = 0x1f, .n_ch = 8,
 268           .mask = FL | FR | LFE | FC | RL | RR | FLC | FRC },
 269 };
 270
 271 struct hdmi_codec_priv {
 272         struct hdmi_codec_pdata hcd;
 273         uint8_t eld[MAX_ELD_BYTES];
 274         struct snd_pcm_chmap *chmap_info;
 275         unsigned int chmap_idx;
 276         struct mutex lock;
 277         bool busy;
 278         struct snd_soc_jack *jack;
 279         unsigned int jack_status;
 280 };
 281
 282 static const struct snd_soc_dapm_widget hdmi_widgets[] = {
 283         SND_SOC_DAPM_OUTPUT("TX"),
 284         SND_SOC_DAPM_OUTPUT("RX"),
 285 };
 286
 287 enum {
 288         DAI_ID_I2S = 0,
 289         DAI_ID_SPDIF,
 290 };
 291
 292 static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
 293                              struct snd_ctl_elem_info *uinfo)
 294 {
 295         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
 296         uinfo->count = sizeof_field(struct hdmi_codec_priv, eld);
 297
 298         return 0;
 299 }
 300
 301 static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
 302                             struct snd_ctl_elem_value *ucontrol)
 303 {
 304         struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
 305         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 306
 307         memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld));
 308
 309         return 0;
 310 }
 311
 312 static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
 313 {
 314         int i;
 315         static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
 316                 [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
 317                 [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
 318         };
 319         unsigned long spk_mask = 0;
 320
 321         for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) {
 322                 if (spk_alloc & (1 << i))
 323                         spk_mask |= hdmi_codec_eld_spk_alloc_bits[i];
 324         }
 325
 326         return spk_mask;
 327 }
 328
 329 static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
 330 {
 331         u8 spk_alloc;
 332         unsigned long spk_mask;
 333
 334         spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
 335         spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
 336
 337         /* Detect if only stereo supported, else return 8 channels mappings */
 338         if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
 339                 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
 340         else
 341                 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
 342 }
 343
 344 static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
 345                                              unsigned char channels)
 346 {
 347         int i;
 348         u8 spk_alloc;
 349         unsigned long spk_mask;
 350         const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
 351
 352         spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
 353         spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
 354
 355         for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
 356                 /* If spk_alloc == 0, HDMI is unplugged return stereo config*/
 357                 if (!spk_alloc && cap->ca_id == 0)
 358                         return i;
 359                 if (cap->n_ch != channels)
 360                         continue;
 361                 if (!(cap->mask == (spk_mask & cap->mask)))
 362                         continue;
 363                 return i;
 364         }
 365
 366         return -EINVAL;
 367 }
 368 static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
 369                               struct snd_ctl_elem_value *ucontrol)
 370 {
 371         unsigned const char *map;
 372         unsigned int i;
 373         struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
 374         struct hdmi_codec_priv *hcp = info->private_data;
 375
 376         map = info->chmap[hcp->chmap_idx].map;
 377
 378         for (i = 0; i < info->max_channels; i++) {
 379                 if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN)
 380                         ucontrol->value.integer.value[i] = 0;
 381                 else
 382                         ucontrol->value.integer.value[i] = map[i];
 383         }
 384
 385         return 0;
 386 }
 387
 388 static int hdmi_codec_startup(struct snd_pcm_substream *substream,
 389                               struct snd_soc_dai *dai)
 390 {
 391         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 392         bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 393         int ret = 0;
 394
 395         mutex_lock(&hcp->lock);
 396         if (hcp->busy) {
 397                 dev_err(dai->dev, "Only one simultaneous stream supported!\n");
 398                 mutex_unlock(&hcp->lock);
 399                 return -EINVAL;
 400         }
 401
 402         if (hcp->hcd.ops->audio_startup) {
 403                 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
 404                 if (ret)
 405                         goto err;
 406         }
 407
 408         if (tx && hcp->hcd.ops->get_eld) {
 409                 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
 410                                             hcp->eld, sizeof(hcp->eld));
 411                 if (ret)
 412                         goto err;
 413
 414                 ret = snd_pcm_hw_constraint_eld(substream->runtime, hcp->eld);
 415                 if (ret)
 416                         goto err;
 417
 418                 /* Select chmap supported */
 419                 hdmi_codec_eld_chmap(hcp);
 420         }
 421
 422         hcp->busy = true;
 423
 424 err:
 425         mutex_unlock(&hcp->lock);
 426         return ret;
 427 }
 428
 429 static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
 430                                 struct snd_soc_dai *dai)
 431 {
 432         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 433
 434         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 435         hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
 436
 437         mutex_lock(&hcp->lock);
 438         hcp->busy = false;
 439         mutex_unlock(&hcp->lock);
 440 }
 441
 442 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
 443                                 struct snd_pcm_hw_params *params,
 444                                 struct snd_soc_dai *dai)
 445 {
 446         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 447         struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
 448         struct hdmi_codec_params hp = {
 449                 .iec = {
 450                         .status = { 0 },
 451                         .subcode = { 0 },
 452                         .pad = 0,
 453                         .dig_subframe = { 0 },
 454                 }
 455         };
 456         int ret, idx;
 457
 458         dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
 459                 params_width(params), params_rate(params),
 460                 params_channels(params));
 461
 462         ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status,
 463                                                        sizeof(hp.iec.status));
 464         if (ret < 0) {
 465                 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
 466                         ret);
 467                 return ret;
 468         }
 469
 470         hdmi_audio_infoframe_init(&hp.cea);
 471         hp.cea.channels = params_channels(params);
 472         hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
 473         hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
 474         hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
 475
 476         /* Select a channel allocation that matches with ELD and pcm channels */
 477         idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels);
 478         if (idx < 0) {
 479                 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
 480                         idx);
 481                 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 482                 return idx;
 483         }
 484         hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
 485         hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
 486
 487         hp.sample_width = params_width(params);
 488         hp.sample_rate = params_rate(params);
 489         hp.channels = params_channels(params);
 490
 491         cf->bit_fmt = params_format(params);
 492         return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
 493                                        cf, &hp);
 494 }
 495
 496 static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai,
 497                                   unsigned int fmt)
 498 {
 499         struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
 500
 501         /* Reset daifmt */
 502         memset(cf, 0, sizeof(*cf));
 503
 504         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 505         case SND_SOC_DAIFMT_CBM_CFM:
 506                 cf->bit_clk_master = 1;
 507                 cf->frame_clk_master = 1;
 508                 break;
 509         case SND_SOC_DAIFMT_CBS_CFM:
 510                 cf->frame_clk_master = 1;
 511                 break;
 512         case SND_SOC_DAIFMT_CBM_CFS:
 513                 cf->bit_clk_master = 1;
 514                 break;
 515         case SND_SOC_DAIFMT_CBS_CFS:
 516                 break;
 517         default:
 518                 return -EINVAL;
 519         }
 520
 521         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 522         case SND_SOC_DAIFMT_NB_NF:
 523                 break;
 524         case SND_SOC_DAIFMT_NB_IF:
 525                 cf->frame_clk_inv = 1;
 526                 break;
 527         case SND_SOC_DAIFMT_IB_NF:
 528                 cf->bit_clk_inv = 1;
 529                 break;
 530         case SND_SOC_DAIFMT_IB_IF:
 531                 cf->frame_clk_inv = 1;
 532                 cf->bit_clk_inv = 1;
 533                 break;
 534         }
 535
 536         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 537         case SND_SOC_DAIFMT_I2S:
 538                 cf->fmt = HDMI_I2S;
 539                 break;
 540         case SND_SOC_DAIFMT_DSP_A:
 541                 cf->fmt = HDMI_DSP_A;
 542                 break;
 543         case SND_SOC_DAIFMT_DSP_B:
 544                 cf->fmt = HDMI_DSP_B;
 545                 break;
 546         case SND_SOC_DAIFMT_RIGHT_J:
 547                 cf->fmt = HDMI_RIGHT_J;
 548                 break;
 549         case SND_SOC_DAIFMT_LEFT_J:
 550                 cf->fmt = HDMI_LEFT_J;
 551                 break;
 552         case SND_SOC_DAIFMT_AC97:
 553                 cf->fmt = HDMI_AC97;
 554                 break;
 555         default:
 556                 dev_err(dai->dev, "Invalid DAI interface format\n");
 557                 return -EINVAL;
 558         }
 559
 560         return 0;
 561 }
 562
 563 static int hdmi_codec_mute(struct snd_soc_dai *dai, int mute, int direction)
 564 {
 565         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 566
 567         /*
 568          * ignore if direction was CAPTURE
 569          * and it had .no_capture_mute flag
 570          * see
 571          *      snd_soc_dai_digital_mute()
 572          */
 573         if (hcp->hcd.ops->mute_stream &&
 574             (direction == SNDRV_PCM_STREAM_PLAYBACK ||
 575              !hcp->hcd.ops->no_capture_mute))
 576                 return hcp->hcd.ops->mute_stream(dai->dev->parent,
 577                                                  hcp->hcd.data,
 578                                                  mute, direction);
 579
 580         return -ENOTSUPP;
 581 }
 582
 583 /*
 584  * This driver can select all SND_SOC_DAIFMT_CBx_CFx,
 585  * but need to be selected from Sound Card, not be auto selected.
 586  * Because it might be used from other driver.
 587  * For example,
 588  *      ${LINUX}/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
 589  */
 590 static u64 hdmi_codec_formats =
 591         SND_SOC_POSSIBLE_DAIFMT_NB_NF   |
 592         SND_SOC_POSSIBLE_DAIFMT_NB_IF   |
 593         SND_SOC_POSSIBLE_DAIFMT_IB_NF   |
 594         SND_SOC_POSSIBLE_DAIFMT_IB_IF   |
 595         SND_SOC_POSSIBLE_DAIFMT_I2S     |
 596         SND_SOC_POSSIBLE_DAIFMT_DSP_A   |
 597         SND_SOC_POSSIBLE_DAIFMT_DSP_B   |
 598         SND_SOC_POSSIBLE_DAIFMT_RIGHT_J |
 599         SND_SOC_POSSIBLE_DAIFMT_LEFT_J  |
 600         SND_SOC_POSSIBLE_DAIFMT_AC97;
 601
 602 static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = {
 603         .startup        = hdmi_codec_startup,
 604         .shutdown       = hdmi_codec_shutdown,
 605         .hw_params      = hdmi_codec_hw_params,
 606         .set_fmt        = hdmi_codec_i2s_set_fmt,
 607         .mute_stream    = hdmi_codec_mute,
 608         .auto_selectable_formats        = &hdmi_codec_formats,
 609         .num_auto_selectable_formats    = 1,
 610 };
 611
 612 static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = {
 613         .startup        = hdmi_codec_startup,
 614         .shutdown       = hdmi_codec_shutdown,
 615         .hw_params      = hdmi_codec_hw_params,
 616         .mute_stream    = hdmi_codec_mute,
 617 };
 618
 619 #define HDMI_RATES      (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
 620                          SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
 621                          SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
 622                          SNDRV_PCM_RATE_192000)
 623
 624 #define SPDIF_FORMATS   (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
 625                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
 626                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
 627                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
 628
 629 /*
 630  * This list is only for formats allowed on the I2S bus. So there is
 631  * some formats listed that are not supported by HDMI interface. For
 632  * instance allowing the 32-bit formats enables 24-precision with CPU
 633  * DAIs that do not support 24-bit formats. If the extra formats cause
 634  * problems, we should add the video side driver an option to disable
 635  * them.
 636  */
 637 #define I2S_FORMATS     (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
 638                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
 639                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
 640                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\
 641                          SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE |\
 642                          SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
 643
 644 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
 645                               struct snd_soc_dai *dai)
 646 {
 647         struct snd_soc_dai_driver *drv = dai->driver;
 648         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 649         struct snd_kcontrol *kctl;
 650         struct snd_kcontrol_new hdmi_eld_ctl = {
 651                 .access = SNDRV_CTL_ELEM_ACCESS_READ |
 652                           SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 653                 .iface  = SNDRV_CTL_ELEM_IFACE_PCM,
 654                 .name   = "ELD",
 655                 .info   = hdmi_eld_ctl_info,
 656                 .get    = hdmi_eld_ctl_get,
 657                 .device = rtd->pcm->device,
 658         };
 659         int ret;
 660
 661         ret =  snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
 662                                       NULL, drv->playback.channels_max, 0,
 663                                       &hcp->chmap_info);
 664         if (ret < 0)
 665                 return ret;
 666
 667         /* override handlers */
 668         hcp->chmap_info->private_data = hcp;
 669         hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
 670
 671         /* default chmap supported is stereo */
 672         hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
 673         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 674
 675         /* add ELD ctl with the device number corresponding to the PCM stream */
 676         kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component);
 677         if (!kctl)
 678                 return -ENOMEM;
 679
 680         return snd_ctl_add(rtd->card->snd_card, kctl);
 681 }
 682
 683 static int hdmi_dai_probe(struct snd_soc_dai *dai)
 684 {
 685         struct snd_soc_dapm_context *dapm;
 686         struct hdmi_codec_daifmt *daifmt;
 687         struct snd_soc_dapm_route route[] = {
 688                 {
 689                         .sink = "TX",
 690                         .source = dai->driver->playback.stream_name,
 691                 },
 692                 {
 693                         .sink = dai->driver->capture.stream_name,
 694                         .source = "RX",
 695                 },
 696         };
 697         int ret;
 698
 699         dapm = snd_soc_component_get_dapm(dai->component);
 700         ret = snd_soc_dapm_add_routes(dapm, route, 2);
 701         if (ret)
 702                 return ret;
 703
 704         daifmt = kzalloc(sizeof(*daifmt), GFP_KERNEL);
 705         if (!daifmt)
 706                 return -ENOMEM;
 707
 708         dai->playback_dma_data = daifmt;
 709         return 0;
 710 }
 711
 712 static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp,
 713                                    unsigned int jack_status)
 714 {
 715         if (hcp->jack && jack_status != hcp->jack_status) {
 716                 snd_soc_jack_report(hcp->jack, jack_status, SND_JACK_LINEOUT);
 717                 hcp->jack_status = jack_status;
 718         }
 719 }
 720
 721 static void plugged_cb(struct device *dev, bool plugged)
 722 {
 723         struct hdmi_codec_priv *hcp = dev_get_drvdata(dev);
 724
 725         if (plugged) {
 726                 if (hcp->hcd.ops->get_eld) {
 727                         hcp->hcd.ops->get_eld(dev->parent, hcp->hcd.data,
 728                                             hcp->eld, sizeof(hcp->eld));
 729                 }
 730                 hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT);
 731         } else {
 732                 hdmi_codec_jack_report(hcp, 0);
 733                 memset(hcp->eld, 0, sizeof(hcp->eld));
 734         }
 735 }
 736
 737 static int hdmi_codec_set_jack(struct snd_soc_component *component,
 738                                struct snd_soc_jack *jack,
 739                                void *data)
 740 {
 741         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 742         int ret = -ENOTSUPP;
 743
 744         if (hcp->hcd.ops->hook_plugged_cb) {
 745                 hcp->jack = jack;
 746                 ret = hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
 747                                                     hcp->hcd.data,
 748                                                     plugged_cb,
 749                                                     component->dev);
 750                 if (ret)
 751                         hcp->jack = NULL;
 752         }
 753         return ret;
 754 }
 755
 756 static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai)
 757 {
 758         struct hdmi_codec_daifmt *cf;
 759         int ret;
 760
 761         ret = hdmi_dai_probe(dai);
 762         if (ret)
 763                 return ret;
 764
 765         cf = dai->playback_dma_data;
 766         cf->fmt = HDMI_SPDIF;
 767
 768         return 0;
 769 }
 770
 771 static int hdmi_codec_dai_remove(struct snd_soc_dai *dai)
 772 {
 773         kfree(dai->playback_dma_data);
 774         return 0;
 775 }
 776
 777 static const struct snd_soc_dai_driver hdmi_i2s_dai = {
 778         .name = "i2s-hifi",
 779         .id = DAI_ID_I2S,
 780         .probe = hdmi_dai_probe,
 781         .remove = hdmi_codec_dai_remove,
 782         .playback = {
 783                 .stream_name = "I2S Playback",
 784                 .channels_min = 2,
 785                 .channels_max = 8,
 786                 .rates = HDMI_RATES,
 787                 .formats = I2S_FORMATS,
 788                 .sig_bits = 24,
 789         },
 790         .capture = {
 791                 .stream_name = "Capture",
 792                 .channels_min = 2,
 793                 .channels_max = 8,
 794                 .rates = HDMI_RATES,
 795                 .formats = I2S_FORMATS,
 796                 .sig_bits = 24,
 797         },
 798         .ops = &hdmi_codec_i2s_dai_ops,
 799         .pcm_new = hdmi_codec_pcm_new,
 800 };
 801
 802 static const struct snd_soc_dai_driver hdmi_spdif_dai = {
 803         .name = "spdif-hifi",
 804         .id = DAI_ID_SPDIF,
 805         .probe = hdmi_dai_spdif_probe,
 806         .remove = hdmi_codec_dai_remove,
 807         .playback = {
 808                 .stream_name = "SPDIF Playback",
 809                 .channels_min = 2,
 810                 .channels_max = 2,
 811                 .rates = HDMI_RATES,
 812                 .formats = SPDIF_FORMATS,
 813         },
 814         .capture = {
 815                 .stream_name = "Capture",
 816                 .channels_min = 2,
 817                 .channels_max = 2,
 818                 .rates = HDMI_RATES,
 819                 .formats = SPDIF_FORMATS,
 820         },
 821         .ops = &hdmi_codec_spdif_dai_ops,
 822         .pcm_new = hdmi_codec_pcm_new,
 823 };
 824
 825 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
 826                                  struct device_node *endpoint)
 827 {
 828         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 829         int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
 830
 831         if (hcp->hcd.ops->get_dai_id)
 832                 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
 833
 834         return ret;
 835 }
 836
 837 static void hdmi_remove(struct snd_soc_component *component)
 838 {
 839         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 840
 841         if (hcp->hcd.ops->hook_plugged_cb)
 842                 hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
 843                                               hcp->hcd.data, NULL, NULL);
 844 }
 845
 846 static const struct snd_soc_component_driver hdmi_driver = {
 847         .remove                 = hdmi_remove,
 848         .dapm_widgets           = hdmi_widgets,
 849         .num_dapm_widgets       = ARRAY_SIZE(hdmi_widgets),
 850         .of_xlate_dai_id        = hdmi_of_xlate_dai_id,
 851         .idle_bias_on           = 1,
 852         .use_pmdown_time        = 1,
 853         .endianness             = 1,
 854         .non_legacy_dai_naming  = 1,
 855         .set_jack               = hdmi_codec_set_jack,
 856 };
 857
 858 static int hdmi_codec_probe(struct platform_device *pdev)
 859 {
 860         struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
 861         struct snd_soc_dai_driver *daidrv;
 862         struct device *dev = &pdev->dev;
 863         struct hdmi_codec_priv *hcp;
 864         int dai_count, i = 0;
 865         int ret;
 866
 867         if (!hcd) {
 868                 dev_err(dev, "%s: No platform data\n", __func__);
 869                 return -EINVAL;
 870         }
 871
 872         dai_count = hcd->i2s + hcd->spdif;
 873         if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params ||
 874             !hcd->ops->audio_shutdown) {
 875                 dev_err(dev, "%s: Invalid parameters\n", __func__);
 876                 return -EINVAL;
 877         }
 878
 879         hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
 880         if (!hcp)
 881                 return -ENOMEM;
 882
 883         hcp->hcd = *hcd;
 884         mutex_init(&hcp->lock);
 885
 886         daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL);
 887         if (!daidrv)
 888                 return -ENOMEM;
 889
 890         if (hcd->i2s) {
 891                 daidrv[i] = hdmi_i2s_dai;
 892                 daidrv[i].playback.channels_max = hcd->max_i2s_channels;
 893                 i++;
 894         }
 895
 896         if (hcd->spdif)
 897                 daidrv[i] = hdmi_spdif_dai;
 898
 899         dev_set_drvdata(dev, hcp);
 900
 901         ret = devm_snd_soc_register_component(dev, &hdmi_driver, daidrv,
 902                                               dai_count);
 903         if (ret) {
 904                 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n",
 905                         __func__, ret);
 906                 return ret;
 907         }
 908         return 0;
 909 }
 910
 911 static struct platform_driver hdmi_codec_driver = {
 912         .driver = {
 913                 .name = HDMI_CODEC_DRV_NAME,
 914         },
 915         .probe = hdmi_codec_probe,
 916 };
 917
 918 module_platform_driver(hdmi_codec_driver);
 919
 920 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
 921 MODULE_DESCRIPTION("HDMI Audio Codec Driver");
 922 MODULE_LICENSE("GPL");
 923 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);