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