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 };
 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         int ret = 0;
 393
 394         mutex_lock(&hcp->lock);
 395         if (hcp->busy) {
 396                 dev_err(dai->dev, "Only one simultaneous stream supported!\n");
 397                 mutex_unlock(&hcp->lock);
 398                 return -EINVAL;
 399         }
 400
 401         if (hcp->hcd.ops->audio_startup) {
 402                 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
 403                 if (ret)
 404                         goto err;
 405         }
 406
 407         if (hcp->hcd.ops->get_eld) {
 408                 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
 409                                             hcp->eld, sizeof(hcp->eld));
 410                 if (ret)
 411                         goto err;
 412
 413                 ret = snd_pcm_hw_constraint_eld(substream->runtime, hcp->eld);
 414                 if (ret)
 415                         goto err;
 416
 417                 /* Select chmap supported */
 418                 hdmi_codec_eld_chmap(hcp);
 419         }
 420
 421         hcp->busy = true;
 422
 423 err:
 424         mutex_unlock(&hcp->lock);
 425         return ret;
 426 }
 427
 428 static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
 429                                 struct snd_soc_dai *dai)
 430 {
 431         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 432
 433         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 434         hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
 435
 436         mutex_lock(&hcp->lock);
 437         hcp->busy = false;
 438         mutex_unlock(&hcp->lock);
 439 }
 440
 441 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
 442                                 struct snd_pcm_hw_params *params,
 443                                 struct snd_soc_dai *dai)
 444 {
 445         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 446         struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
 447         struct hdmi_codec_params hp = {
 448                 .iec = {
 449                         .status = { 0 },
 450                         .subcode = { 0 },
 451                         .pad = 0,
 452                         .dig_subframe = { 0 },
 453                 }
 454         };
 455         int ret, idx;
 456
 457         dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
 458                 params_width(params), params_rate(params),
 459                 params_channels(params));
 460
 461         ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status,
 462                                                        sizeof(hp.iec.status));
 463         if (ret < 0) {
 464                 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
 465                         ret);
 466                 return ret;
 467         }
 468
 469         hdmi_audio_infoframe_init(&hp.cea);
 470         hp.cea.channels = params_channels(params);
 471         hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
 472         hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
 473         hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
 474
 475         /* Select a channel allocation that matches with ELD and pcm channels */
 476         idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels);
 477         if (idx < 0) {
 478                 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
 479                         idx);
 480                 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 481                 return idx;
 482         }
 483         hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
 484         hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
 485
 486         hp.sample_width = params_width(params);
 487         hp.sample_rate = params_rate(params);
 488         hp.channels = params_channels(params);
 489
 490         return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
 491                                        cf, &hp);
 492 }
 493
 494 static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai,
 495                                   unsigned int fmt)
 496 {
 497         struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
 498
 499         /* Reset daifmt */
 500         memset(cf, 0, sizeof(*cf));
 501
 502         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 503         case SND_SOC_DAIFMT_CBM_CFM:
 504                 cf->bit_clk_master = 1;
 505                 cf->frame_clk_master = 1;
 506                 break;
 507         case SND_SOC_DAIFMT_CBS_CFM:
 508                 cf->frame_clk_master = 1;
 509                 break;
 510         case SND_SOC_DAIFMT_CBM_CFS:
 511                 cf->bit_clk_master = 1;
 512                 break;
 513         case SND_SOC_DAIFMT_CBS_CFS:
 514                 break;
 515         default:
 516                 return -EINVAL;
 517         }
 518
 519         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 520         case SND_SOC_DAIFMT_NB_NF:
 521                 break;
 522         case SND_SOC_DAIFMT_NB_IF:
 523                 cf->frame_clk_inv = 1;
 524                 break;
 525         case SND_SOC_DAIFMT_IB_NF:
 526                 cf->bit_clk_inv = 1;
 527                 break;
 528         case SND_SOC_DAIFMT_IB_IF:
 529                 cf->frame_clk_inv = 1;
 530                 cf->bit_clk_inv = 1;
 531                 break;
 532         }
 533
 534         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 535         case SND_SOC_DAIFMT_I2S:
 536                 cf->fmt = HDMI_I2S;
 537                 break;
 538         case SND_SOC_DAIFMT_DSP_A:
 539                 cf->fmt = HDMI_DSP_A;
 540                 break;
 541         case SND_SOC_DAIFMT_DSP_B:
 542                 cf->fmt = HDMI_DSP_B;
 543                 break;
 544         case SND_SOC_DAIFMT_RIGHT_J:
 545                 cf->fmt = HDMI_RIGHT_J;
 546                 break;
 547         case SND_SOC_DAIFMT_LEFT_J:
 548                 cf->fmt = HDMI_LEFT_J;
 549                 break;
 550         case SND_SOC_DAIFMT_AC97:
 551                 cf->fmt = HDMI_AC97;
 552                 break;
 553         default:
 554                 dev_err(dai->dev, "Invalid DAI interface format\n");
 555                 return -EINVAL;
 556         }
 557
 558         return 0;
 559 }
 560
 561 static int hdmi_codec_mute(struct snd_soc_dai *dai, int mute, int direction)
 562 {
 563         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 564
 565         /*
 566          * ignore if direction was CAPTURE
 567          * and it had .no_capture_mute flag
 568          * see
 569          *      snd_soc_dai_digital_mute()
 570          */
 571         if (hcp->hcd.ops->mute_stream &&
 572             (direction == SNDRV_PCM_STREAM_PLAYBACK ||
 573              !hcp->hcd.ops->no_capture_mute))
 574                 return hcp->hcd.ops->mute_stream(dai->dev->parent,
 575                                                  hcp->hcd.data,
 576                                                  mute, direction);
 577
 578         return -ENOTSUPP;
 579 }
 580
 581 static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = {
 582         .startup        = hdmi_codec_startup,
 583         .shutdown       = hdmi_codec_shutdown,
 584         .hw_params      = hdmi_codec_hw_params,
 585         .set_fmt        = hdmi_codec_i2s_set_fmt,
 586         .mute_stream    = hdmi_codec_mute,
 587 };
 588
 589 static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = {
 590         .startup        = hdmi_codec_startup,
 591         .shutdown       = hdmi_codec_shutdown,
 592         .hw_params      = hdmi_codec_hw_params,
 593         .mute_stream    = hdmi_codec_mute,
 594 };
 595
 596 #define HDMI_RATES      (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
 597                          SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
 598                          SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
 599                          SNDRV_PCM_RATE_192000)
 600
 601 #define SPDIF_FORMATS   (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
 602                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
 603                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
 604                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
 605
 606 /*
 607  * This list is only for formats allowed on the I2S bus. So there is
 608  * some formats listed that are not supported by HDMI interface. For
 609  * instance allowing the 32-bit formats enables 24-precision with CPU
 610  * DAIs that do not support 24-bit formats. If the extra formats cause
 611  * problems, we should add the video side driver an option to disable
 612  * them.
 613  */
 614 #define I2S_FORMATS     (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
 615                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
 616                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
 617                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\
 618                          SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
 619
 620 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
 621                               struct snd_soc_dai *dai)
 622 {
 623         struct snd_soc_dai_driver *drv = dai->driver;
 624         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 625         struct snd_kcontrol *kctl;
 626         struct snd_kcontrol_new hdmi_eld_ctl = {
 627                 .access = SNDRV_CTL_ELEM_ACCESS_READ |
 628                           SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 629                 .iface  = SNDRV_CTL_ELEM_IFACE_PCM,
 630                 .name   = "ELD",
 631                 .info   = hdmi_eld_ctl_info,
 632                 .get    = hdmi_eld_ctl_get,
 633                 .device = rtd->pcm->device,
 634         };
 635         int ret;
 636
 637         ret =  snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
 638                                       NULL, drv->playback.channels_max, 0,
 639                                       &hcp->chmap_info);
 640         if (ret < 0)
 641                 return ret;
 642
 643         /* override handlers */
 644         hcp->chmap_info->private_data = hcp;
 645         hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
 646
 647         /* default chmap supported is stereo */
 648         hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
 649         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 650
 651         /* add ELD ctl with the device number corresponding to the PCM stream */
 652         kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component);
 653         if (!kctl)
 654                 return -ENOMEM;
 655
 656         return snd_ctl_add(rtd->card->snd_card, kctl);
 657 }
 658
 659 static int hdmi_dai_probe(struct snd_soc_dai *dai)
 660 {
 661         struct snd_soc_dapm_context *dapm;
 662         struct hdmi_codec_daifmt *daifmt;
 663         struct snd_soc_dapm_route route = {
 664                 .sink = "TX",
 665                 .source = dai->driver->playback.stream_name,
 666         };
 667         int ret;
 668
 669         dapm = snd_soc_component_get_dapm(dai->component);
 670         ret = snd_soc_dapm_add_routes(dapm, &route, 1);
 671         if (ret)
 672                 return ret;
 673
 674         daifmt = kzalloc(sizeof(*daifmt), GFP_KERNEL);
 675         if (!daifmt)
 676                 return -ENOMEM;
 677
 678         dai->playback_dma_data = daifmt;
 679         return 0;
 680 }
 681
 682 static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp,
 683                                    unsigned int jack_status)
 684 {
 685         if (hcp->jack && jack_status != hcp->jack_status) {
 686                 snd_soc_jack_report(hcp->jack, jack_status, SND_JACK_LINEOUT);
 687                 hcp->jack_status = jack_status;
 688         }
 689 }
 690
 691 static void plugged_cb(struct device *dev, bool plugged)
 692 {
 693         struct hdmi_codec_priv *hcp = dev_get_drvdata(dev);
 694
 695         if (plugged)
 696                 hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT);
 697         else
 698                 hdmi_codec_jack_report(hcp, 0);
 699 }
 700
 701 static int hdmi_codec_set_jack(struct snd_soc_component *component,
 702                                struct snd_soc_jack *jack,
 703                                void *data)
 704 {
 705         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 706         int ret = -EOPNOTSUPP;
 707
 708         if (hcp->hcd.ops->hook_plugged_cb) {
 709                 hcp->jack = jack;
 710                 ret = hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
 711                                                     hcp->hcd.data,
 712                                                     plugged_cb,
 713                                                     component->dev);
 714                 if (ret)
 715                         hcp->jack = NULL;
 716         }
 717         return ret;
 718 }
 719
 720 static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai)
 721 {
 722         struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
 723         int ret;
 724
 725         ret = hdmi_dai_probe(dai);
 726         if (ret)
 727                 return ret;
 728
 729         cf = dai->playback_dma_data;
 730         cf->fmt = HDMI_SPDIF;
 731
 732         return 0;
 733 }
 734
 735 static int hdmi_codec_dai_remove(struct snd_soc_dai *dai)
 736 {
 737         kfree(dai->playback_dma_data);
 738         return 0;
 739 }
 740
 741 static const struct snd_soc_dai_driver hdmi_i2s_dai = {
 742         .name = "i2s-hifi",
 743         .id = DAI_ID_I2S,
 744         .probe = hdmi_dai_probe,
 745         .remove = hdmi_codec_dai_remove,
 746         .playback = {
 747                 .stream_name = "I2S Playback",
 748                 .channels_min = 2,
 749                 .channels_max = 8,
 750                 .rates = HDMI_RATES,
 751                 .formats = I2S_FORMATS,
 752                 .sig_bits = 24,
 753         },
 754         .ops = &hdmi_codec_i2s_dai_ops,
 755         .pcm_new = hdmi_codec_pcm_new,
 756 };
 757
 758 static const struct snd_soc_dai_driver hdmi_spdif_dai = {
 759         .name = "spdif-hifi",
 760         .id = DAI_ID_SPDIF,
 761         .probe = hdmi_dai_spdif_probe,
 762         .remove = hdmi_codec_dai_remove,
 763         .playback = {
 764                 .stream_name = "SPDIF Playback",
 765                 .channels_min = 2,
 766                 .channels_max = 2,
 767                 .rates = HDMI_RATES,
 768                 .formats = SPDIF_FORMATS,
 769         },
 770         .ops = &hdmi_codec_spdif_dai_ops,
 771         .pcm_new = hdmi_codec_pcm_new,
 772 };
 773
 774 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
 775                                  struct device_node *endpoint)
 776 {
 777         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 778         int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
 779
 780         if (hcp->hcd.ops->get_dai_id)
 781                 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
 782
 783         return ret;
 784 }
 785
 786 static void hdmi_remove(struct snd_soc_component *component)
 787 {
 788         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 789
 790         if (hcp->hcd.ops->hook_plugged_cb)
 791                 hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
 792                                               hcp->hcd.data, NULL, NULL);
 793 }
 794
 795 static const struct snd_soc_component_driver hdmi_driver = {
 796         .remove                 = hdmi_remove,
 797         .dapm_widgets           = hdmi_widgets,
 798         .num_dapm_widgets       = ARRAY_SIZE(hdmi_widgets),
 799         .of_xlate_dai_id        = hdmi_of_xlate_dai_id,
 800         .idle_bias_on           = 1,
 801         .use_pmdown_time        = 1,
 802         .endianness             = 1,
 803         .non_legacy_dai_naming  = 1,
 804         .set_jack               = hdmi_codec_set_jack,
 805 };
 806
 807 static int hdmi_codec_probe(struct platform_device *pdev)
 808 {
 809         struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
 810         struct snd_soc_dai_driver *daidrv;
 811         struct device *dev = &pdev->dev;
 812         struct hdmi_codec_priv *hcp;
 813         int dai_count, i = 0;
 814         int ret;
 815
 816         if (!hcd) {
 817                 dev_err(dev, "%s: No platform data\n", __func__);
 818                 return -EINVAL;
 819         }
 820
 821         dai_count = hcd->i2s + hcd->spdif;
 822         if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params ||
 823             !hcd->ops->audio_shutdown) {
 824                 dev_err(dev, "%s: Invalid parameters\n", __func__);
 825                 return -EINVAL;
 826         }
 827
 828         hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
 829         if (!hcp)
 830                 return -ENOMEM;
 831
 832         hcp->hcd = *hcd;
 833         mutex_init(&hcp->lock);
 834
 835         daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL);
 836         if (!daidrv)
 837                 return -ENOMEM;
 838
 839         if (hcd->i2s) {
 840                 daidrv[i] = hdmi_i2s_dai;
 841                 daidrv[i].playback.channels_max = hcd->max_i2s_channels;
 842                 i++;
 843         }
 844
 845         if (hcd->spdif)
 846                 daidrv[i] = hdmi_spdif_dai;
 847
 848         dev_set_drvdata(dev, hcp);
 849
 850         ret = devm_snd_soc_register_component(dev, &hdmi_driver, daidrv,
 851                                               dai_count);
 852         if (ret) {
 853                 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n",
 854                         __func__, ret);
 855                 return ret;
 856         }
 857         return 0;
 858 }
 859
 860 static struct platform_driver hdmi_codec_driver = {
 861         .driver = {
 862                 .name = HDMI_CODEC_DRV_NAME,
 863         },
 864         .probe = hdmi_codec_probe,
 865 };
 866
 867 module_platform_driver(hdmi_codec_driver);
 868
 869 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
 870 MODULE_DESCRIPTION("HDMI Audio Codec Driver");
 871 MODULE_LICENSE("GPL");
 872 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);