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 /*
  24  * CEA speaker placement for HDMI 1.4:
  25  *
  26  *  FL  FLC   FC   FRC   FR   FRW
  27  *
  28  *                                  LFE
  29  *
  30  *  RL  RLC   RC   RRC   RR
  31  *
  32  *  Speaker placement has to be extended to support HDMI 2.0
  33  */
  34 enum hdmi_codec_cea_spk_placement {
  35         FL  = BIT(0),   /* Front Left           */
  36         FC  = BIT(1),   /* Front Center         */
  37         FR  = BIT(2),   /* Front Right          */
  38         FLC = BIT(3),   /* Front Left Center    */
  39         FRC = BIT(4),   /* Front Right Center   */
  40         RL  = BIT(5),   /* Rear Left            */
  41         RC  = BIT(6),   /* Rear Center          */
  42         RR  = BIT(7),   /* Rear Right           */
  43         RLC = BIT(8),   /* Rear Left Center     */
  44         RRC = BIT(9),   /* Rear Right Center    */
  45         LFE = BIT(10),  /* Low Frequency Effect */
  46 };
  47
  48 /*
  49  * cea Speaker allocation structure
  50  */
  51 struct hdmi_codec_cea_spk_alloc {
  52         const int ca_id;
  53         unsigned int n_ch;
  54         unsigned long mask;
  55 };
  56
  57 /* Channel maps  stereo HDMI */
  58 static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = {
  59         { .channels = 2,
  60           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
  61         { }
  62 };
  63
  64 /* Channel maps for multi-channel playbacks, up to 8 n_ch */
  65 static const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = {
  66         { .channels = 2, /* CA_ID 0x00 */
  67           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
  68         { .channels = 4, /* CA_ID 0x01 */
  69           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  70                    SNDRV_CHMAP_NA } },
  71         { .channels = 4, /* CA_ID 0x02 */
  72           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  73                    SNDRV_CHMAP_FC } },
  74         { .channels = 4, /* CA_ID 0x03 */
  75           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  76                    SNDRV_CHMAP_FC } },
  77         { .channels = 6, /* CA_ID 0x04 */
  78           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  79                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  80         { .channels = 6, /* CA_ID 0x05 */
  81           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  82                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  83         { .channels = 6, /* CA_ID 0x06 */
  84           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  85                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  86         { .channels = 6, /* CA_ID 0x07 */
  87           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  88                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  89         { .channels = 6, /* CA_ID 0x08 */
  90           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  91                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
  92         { .channels = 6, /* CA_ID 0x09 */
  93           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  94                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
  95         { .channels = 6, /* CA_ID 0x0A */
  96           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  97                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
  98         { .channels = 6, /* CA_ID 0x0B */
  99           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 100                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
 101         { .channels = 8, /* CA_ID 0x0C */
 102           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 103                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 104                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 105         { .channels = 8, /* CA_ID 0x0D */
 106           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 107                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 108                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 109         { .channels = 8, /* CA_ID 0x0E */
 110           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 111                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 112                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 113         { .channels = 8, /* CA_ID 0x0F */
 114           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 115                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 116                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 117         { .channels = 8, /* CA_ID 0x10 */
 118           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 119                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 120                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 121         { .channels = 8, /* CA_ID 0x11 */
 122           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 123                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 124                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 125         { .channels = 8, /* CA_ID 0x12 */
 126           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 127                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 128                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 129         { .channels = 8, /* CA_ID 0x13 */
 130           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 131                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 132                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 133         { .channels = 8, /* CA_ID 0x14 */
 134           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 135                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 136                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 137         { .channels = 8, /* CA_ID 0x15 */
 138           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 139                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 140                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 141         { .channels = 8, /* CA_ID 0x16 */
 142           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 143                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 144                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 145         { .channels = 8, /* CA_ID 0x17 */
 146           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 147                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 148                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 149         { .channels = 8, /* CA_ID 0x18 */
 150           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 151                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 152                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 153         { .channels = 8, /* CA_ID 0x19 */
 154           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 155                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 156                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 157         { .channels = 8, /* CA_ID 0x1A */
 158           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 159                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 160                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 161         { .channels = 8, /* CA_ID 0x1B */
 162           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 163                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 164                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 165         { .channels = 8, /* CA_ID 0x1C */
 166           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 167                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 168                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 169         { .channels = 8, /* CA_ID 0x1D */
 170           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 171                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 172                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 173         { .channels = 8, /* CA_ID 0x1E */
 174           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 175                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 176                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 177         { .channels = 8, /* CA_ID 0x1F */
 178           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 179                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 180                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 181         { }
 182 };
 183
 184 /*
 185  * hdmi_codec_channel_alloc: speaker configuration available for CEA
 186  *
 187  * This is an ordered list that must match with hdmi_codec_8ch_chmaps struct
 188  * The preceding ones have better chances to be selected by
 189  * hdmi_codec_get_ch_alloc_table_idx().
 190  */
 191 static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = {
 192         { .ca_id = 0x00, .n_ch = 2,
 193           .mask = FL | FR},
 194         /* 2.1 */
 195         { .ca_id = 0x01, .n_ch = 4,
 196           .mask = FL | FR | LFE},
 197         /* Dolby Surround */
 198         { .ca_id = 0x02, .n_ch = 4,
 199           .mask = FL | FR | FC },
 200         /* surround51 */
 201         { .ca_id = 0x0b, .n_ch = 6,
 202           .mask = FL | FR | LFE | FC | RL | RR},
 203         /* surround40 */
 204         { .ca_id = 0x08, .n_ch = 6,
 205           .mask = FL | FR | RL | RR },
 206         /* surround41 */
 207         { .ca_id = 0x09, .n_ch = 6,
 208           .mask = FL | FR | LFE | RL | RR },
 209         /* surround50 */
 210         { .ca_id = 0x0a, .n_ch = 6,
 211           .mask = FL | FR | FC | RL | RR },
 212         /* 6.1 */
 213         { .ca_id = 0x0f, .n_ch = 8,
 214           .mask = FL | FR | LFE | FC | RL | RR | RC },
 215         /* surround71 */
 216         { .ca_id = 0x13, .n_ch = 8,
 217           .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC },
 218         /* others */
 219         { .ca_id = 0x03, .n_ch = 8,
 220           .mask = FL | FR | LFE | FC },
 221         { .ca_id = 0x04, .n_ch = 8,
 222           .mask = FL | FR | RC},
 223         { .ca_id = 0x05, .n_ch = 8,
 224           .mask = FL | FR | LFE | RC },
 225         { .ca_id = 0x06, .n_ch = 8,
 226           .mask = FL | FR | FC | RC },
 227         { .ca_id = 0x07, .n_ch = 8,
 228           .mask = FL | FR | LFE | FC | RC },
 229         { .ca_id = 0x0c, .n_ch = 8,
 230           .mask = FL | FR | RC | RL | RR },
 231         { .ca_id = 0x0d, .n_ch = 8,
 232           .mask = FL | FR | LFE | RL | RR | RC },
 233         { .ca_id = 0x0e, .n_ch = 8,
 234           .mask = FL | FR | FC | RL | RR | RC },
 235         { .ca_id = 0x10, .n_ch = 8,
 236           .mask = FL | FR | RL | RR | RLC | RRC },
 237         { .ca_id = 0x11, .n_ch = 8,
 238           .mask = FL | FR | LFE | RL | RR | RLC | RRC },
 239         { .ca_id = 0x12, .n_ch = 8,
 240           .mask = FL | FR | FC | RL | RR | RLC | RRC },
 241         { .ca_id = 0x14, .n_ch = 8,
 242           .mask = FL | FR | FLC | FRC },
 243         { .ca_id = 0x15, .n_ch = 8,
 244           .mask = FL | FR | LFE | FLC | FRC },
 245         { .ca_id = 0x16, .n_ch = 8,
 246           .mask = FL | FR | FC | FLC | FRC },
 247         { .ca_id = 0x17, .n_ch = 8,
 248           .mask = FL | FR | LFE | FC | FLC | FRC },
 249         { .ca_id = 0x18, .n_ch = 8,
 250           .mask = FL | FR | RC | FLC | FRC },
 251         { .ca_id = 0x19, .n_ch = 8,
 252           .mask = FL | FR | LFE | RC | FLC | FRC },
 253         { .ca_id = 0x1a, .n_ch = 8,
 254           .mask = FL | FR | RC | FC | FLC | FRC },
 255         { .ca_id = 0x1b, .n_ch = 8,
 256           .mask = FL | FR | LFE | RC | FC | FLC | FRC },
 257         { .ca_id = 0x1c, .n_ch = 8,
 258           .mask = FL | FR | RL | RR | FLC | FRC },
 259         { .ca_id = 0x1d, .n_ch = 8,
 260           .mask = FL | FR | LFE | RL | RR | FLC | FRC },
 261         { .ca_id = 0x1e, .n_ch = 8,
 262           .mask = FL | FR | FC | RL | RR | FLC | FRC },
 263         { .ca_id = 0x1f, .n_ch = 8,
 264           .mask = FL | FR | LFE | FC | RL | RR | FLC | FRC },
 265 };
 266
 267 struct hdmi_codec_priv {
 268         struct hdmi_codec_pdata hcd;
 269         uint8_t eld[MAX_ELD_BYTES];
 270         struct snd_pcm_chmap *chmap_info;
 271         unsigned int chmap_idx;
 272         struct mutex lock;
 273         bool busy;
 274         struct snd_soc_jack *jack;
 275         unsigned int jack_status;
 276         u8 iec_status[AES_IEC958_STATUS_SIZE];
 277 };
 278
 279 static const struct snd_soc_dapm_widget hdmi_widgets[] = {
 280         SND_SOC_DAPM_OUTPUT("TX"),
 281         SND_SOC_DAPM_OUTPUT("RX"),
 282 };
 283
 284 enum {
 285         DAI_ID_I2S = 0,
 286         DAI_ID_SPDIF,
 287 };
 288
 289 static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
 290                              struct snd_ctl_elem_info *uinfo)
 291 {
 292         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
 293         uinfo->count = sizeof_field(struct hdmi_codec_priv, eld);
 294
 295         return 0;
 296 }
 297
 298 static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
 299                             struct snd_ctl_elem_value *ucontrol)
 300 {
 301         struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
 302         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 303
 304         memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld));
 305
 306         return 0;
 307 }
 308
 309 static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
 310 {
 311         int i;
 312         static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
 313                 [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
 314                 [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
 315         };
 316         unsigned long spk_mask = 0;
 317
 318         for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) {
 319                 if (spk_alloc & (1 << i))
 320                         spk_mask |= hdmi_codec_eld_spk_alloc_bits[i];
 321         }
 322
 323         return spk_mask;
 324 }
 325
 326 static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
 327 {
 328         u8 spk_alloc;
 329         unsigned long spk_mask;
 330
 331         spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
 332         spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
 333
 334         /* Detect if only stereo supported, else return 8 channels mappings */
 335         if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
 336                 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
 337         else
 338                 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
 339 }
 340
 341 static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
 342                                              unsigned char channels)
 343 {
 344         int i;
 345         u8 spk_alloc;
 346         unsigned long spk_mask;
 347         const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
 348
 349         spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
 350         spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
 351
 352         for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
 353                 /* If spk_alloc == 0, HDMI is unplugged return stereo config*/
 354                 if (!spk_alloc && cap->ca_id == 0)
 355                         return i;
 356                 if (cap->n_ch != channels)
 357                         continue;
 358                 if (!(cap->mask == (spk_mask & cap->mask)))
 359                         continue;
 360                 return i;
 361         }
 362
 363         return -EINVAL;
 364 }
 365 static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
 366                               struct snd_ctl_elem_value *ucontrol)
 367 {
 368         unsigned const char *map;
 369         unsigned int i;
 370         struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
 371         struct hdmi_codec_priv *hcp = info->private_data;
 372
 373         map = info->chmap[hcp->chmap_idx].map;
 374
 375         for (i = 0; i < info->max_channels; i++) {
 376                 if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN)
 377                         ucontrol->value.integer.value[i] = 0;
 378                 else
 379                         ucontrol->value.integer.value[i] = map[i];
 380         }
 381
 382         return 0;
 383 }
 384
 385 static int hdmi_codec_iec958_info(struct snd_kcontrol *kcontrol,
 386                                   struct snd_ctl_elem_info *uinfo)
 387 {
 388         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
 389         uinfo->count = 1;
 390         return 0;
 391 }
 392
 393 static int hdmi_codec_iec958_default_get(struct snd_kcontrol *kcontrol,
 394                                          struct snd_ctl_elem_value *ucontrol)
 395 {
 396         struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
 397         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 398
 399         memcpy(ucontrol->value.iec958.status, hcp->iec_status,
 400                sizeof(hcp->iec_status));
 401
 402         return 0;
 403 }
 404
 405 static int hdmi_codec_iec958_default_put(struct snd_kcontrol *kcontrol,
 406                                          struct snd_ctl_elem_value *ucontrol)
 407 {
 408         struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
 409         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 410
 411         memcpy(hcp->iec_status, ucontrol->value.iec958.status,
 412                sizeof(hcp->iec_status));
 413
 414         return 0;
 415 }
 416
 417 static int hdmi_codec_iec958_mask_get(struct snd_kcontrol *kcontrol,
 418                                       struct snd_ctl_elem_value *ucontrol)
 419 {
 420         memset(ucontrol->value.iec958.status, 0xff,
 421                sizeof_field(struct hdmi_codec_priv, iec_status));
 422
 423         return 0;
 424 }
 425
 426 static int hdmi_codec_startup(struct snd_pcm_substream *substream,
 427                               struct snd_soc_dai *dai)
 428 {
 429         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 430         bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 431         int ret = 0;
 432
 433         mutex_lock(&hcp->lock);
 434         if (hcp->busy) {
 435                 dev_err(dai->dev, "Only one simultaneous stream supported!\n");
 436                 mutex_unlock(&hcp->lock);
 437                 return -EINVAL;
 438         }
 439
 440         if (hcp->hcd.ops->audio_startup) {
 441                 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
 442                 if (ret)
 443                         goto err;
 444         }
 445
 446         if (tx && hcp->hcd.ops->get_eld) {
 447                 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
 448                                             hcp->eld, sizeof(hcp->eld));
 449                 if (ret)
 450                         goto err;
 451
 452                 ret = snd_pcm_hw_constraint_eld(substream->runtime, hcp->eld);
 453                 if (ret)
 454                         goto err;
 455
 456                 /* Select chmap supported */
 457                 hdmi_codec_eld_chmap(hcp);
 458         }
 459
 460         hcp->busy = true;
 461
 462 err:
 463         mutex_unlock(&hcp->lock);
 464         return ret;
 465 }
 466
 467 static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
 468                                 struct snd_soc_dai *dai)
 469 {
 470         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 471
 472         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 473         hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
 474
 475         mutex_lock(&hcp->lock);
 476         hcp->busy = false;
 477         mutex_unlock(&hcp->lock);
 478 }
 479
 480 static int hdmi_codec_fill_codec_params(struct snd_soc_dai *dai,
 481                                         unsigned int sample_width,
 482                                         unsigned int sample_rate,
 483                                         unsigned int channels,
 484                                         struct hdmi_codec_params *hp)
 485 {
 486         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 487         int idx;
 488
 489         /* Select a channel allocation that matches with ELD and pcm channels */
 490         idx = hdmi_codec_get_ch_alloc_table_idx(hcp, channels);
 491         if (idx < 0) {
 492                 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
 493                         idx);
 494                 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 495                 return idx;
 496         }
 497
 498         memset(hp, 0, sizeof(*hp));
 499
 500         hdmi_audio_infoframe_init(&hp->cea);
 501         hp->cea.channels = channels;
 502         hp->cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
 503         hp->cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
 504         hp->cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
 505         hp->cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
 506
 507         hp->sample_width = sample_width;
 508         hp->sample_rate = sample_rate;
 509         hp->channels = channels;
 510
 511         hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
 512
 513         return 0;
 514 }
 515
 516 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
 517                                 struct snd_pcm_hw_params *params,
 518                                 struct snd_soc_dai *dai)
 519 {
 520         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 521         struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
 522         struct hdmi_codec_params hp = {
 523                 .iec = {
 524                         .status = { 0 },
 525                         .subcode = { 0 },
 526                         .pad = 0,
 527                         .dig_subframe = { 0 },
 528                 }
 529         };
 530         int ret;
 531
 532         if (!hcp->hcd.ops->hw_params)
 533                 return 0;
 534
 535         dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
 536                 params_width(params), params_rate(params),
 537                 params_channels(params));
 538
 539         ret = hdmi_codec_fill_codec_params(dai,
 540                                            params_width(params),
 541                                            params_rate(params),
 542                                            params_channels(params),
 543                                            &hp);
 544         if (ret < 0)
 545                 return ret;
 546
 547         memcpy(hp.iec.status, hcp->iec_status, sizeof(hp.iec.status));
 548         ret = snd_pcm_fill_iec958_consumer_hw_params(params, hp.iec.status,
 549                                                      sizeof(hp.iec.status));
 550         if (ret < 0) {
 551                 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
 552                         ret);
 553                 return ret;
 554         }
 555
 556         cf->bit_fmt = params_format(params);
 557         return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
 558                                        cf, &hp);
 559 }
 560
 561 static int hdmi_codec_prepare(struct snd_pcm_substream *substream,
 562                               struct snd_soc_dai *dai)
 563 {
 564         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 565         struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
 566         struct snd_pcm_runtime *runtime = substream->runtime;
 567         unsigned int channels = runtime->channels;
 568         unsigned int width = snd_pcm_format_width(runtime->format);
 569         unsigned int rate = runtime->rate;
 570         struct hdmi_codec_params hp;
 571         int ret;
 572
 573         if (!hcp->hcd.ops->prepare)
 574                 return 0;
 575
 576         dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
 577                 width, rate, channels);
 578
 579         ret = hdmi_codec_fill_codec_params(dai, width, rate, channels, &hp);
 580         if (ret < 0)
 581                 return ret;
 582
 583         memcpy(hp.iec.status, hcp->iec_status, sizeof(hp.iec.status));
 584         ret = snd_pcm_fill_iec958_consumer(runtime, hp.iec.status,
 585                                            sizeof(hp.iec.status));
 586         if (ret < 0) {
 587                 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
 588                         ret);
 589                 return ret;
 590         }
 591
 592         cf->bit_fmt = runtime->format;
 593         return hcp->hcd.ops->prepare(dai->dev->parent, hcp->hcd.data,
 594                                      cf, &hp);
 595 }
 596
 597 static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai,
 598                                   unsigned int fmt)
 599 {
 600         struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
 601
 602         /* Reset daifmt */
 603         memset(cf, 0, sizeof(*cf));
 604
 605         switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
 606         case SND_SOC_DAIFMT_CBP_CFP:
 607                 cf->bit_clk_provider = 1;
 608                 cf->frame_clk_provider = 1;
 609                 break;
 610         case SND_SOC_DAIFMT_CBC_CFP:
 611                 cf->frame_clk_provider = 1;
 612                 break;
 613         case SND_SOC_DAIFMT_CBP_CFC:
 614                 cf->bit_clk_provider = 1;
 615                 break;
 616         case SND_SOC_DAIFMT_CBC_CFC:
 617                 break;
 618         default:
 619                 return -EINVAL;
 620         }
 621
 622         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 623         case SND_SOC_DAIFMT_NB_NF:
 624                 break;
 625         case SND_SOC_DAIFMT_NB_IF:
 626                 cf->frame_clk_inv = 1;
 627                 break;
 628         case SND_SOC_DAIFMT_IB_NF:
 629                 cf->bit_clk_inv = 1;
 630                 break;
 631         case SND_SOC_DAIFMT_IB_IF:
 632                 cf->frame_clk_inv = 1;
 633                 cf->bit_clk_inv = 1;
 634                 break;
 635         }
 636
 637         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 638         case SND_SOC_DAIFMT_I2S:
 639                 cf->fmt = HDMI_I2S;
 640                 break;
 641         case SND_SOC_DAIFMT_DSP_A:
 642                 cf->fmt = HDMI_DSP_A;
 643                 break;
 644         case SND_SOC_DAIFMT_DSP_B:
 645                 cf->fmt = HDMI_DSP_B;
 646                 break;
 647         case SND_SOC_DAIFMT_RIGHT_J:
 648                 cf->fmt = HDMI_RIGHT_J;
 649                 break;
 650         case SND_SOC_DAIFMT_LEFT_J:
 651                 cf->fmt = HDMI_LEFT_J;
 652                 break;
 653         case SND_SOC_DAIFMT_AC97:
 654                 cf->fmt = HDMI_AC97;
 655                 break;
 656         default:
 657                 dev_err(dai->dev, "Invalid DAI interface format\n");
 658                 return -EINVAL;
 659         }
 660
 661         return 0;
 662 }
 663
 664 static int hdmi_codec_mute(struct snd_soc_dai *dai, int mute, int direction)
 665 {
 666         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 667
 668         /*
 669          * ignore if direction was CAPTURE
 670          * and it had .no_capture_mute flag
 671          * see
 672          *      snd_soc_dai_digital_mute()
 673          */
 674         if (hcp->hcd.ops->mute_stream &&
 675             (direction == SNDRV_PCM_STREAM_PLAYBACK ||
 676              !hcp->hcd.ops->no_capture_mute))
 677                 return hcp->hcd.ops->mute_stream(dai->dev->parent,
 678                                                  hcp->hcd.data,
 679                                                  mute, direction);
 680
 681         return -ENOTSUPP;
 682 }
 683
 684 /*
 685  * This driver can select all SND_SOC_DAIFMT_CBx_CFx,
 686  * but need to be selected from Sound Card, not be auto selected.
 687  * Because it might be used from other driver.
 688  * For example,
 689  *      ${LINUX}/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
 690  */
 691 static u64 hdmi_codec_formats =
 692         SND_SOC_POSSIBLE_DAIFMT_NB_NF   |
 693         SND_SOC_POSSIBLE_DAIFMT_NB_IF   |
 694         SND_SOC_POSSIBLE_DAIFMT_IB_NF   |
 695         SND_SOC_POSSIBLE_DAIFMT_IB_IF   |
 696         SND_SOC_POSSIBLE_DAIFMT_I2S     |
 697         SND_SOC_POSSIBLE_DAIFMT_DSP_A   |
 698         SND_SOC_POSSIBLE_DAIFMT_DSP_B   |
 699         SND_SOC_POSSIBLE_DAIFMT_RIGHT_J |
 700         SND_SOC_POSSIBLE_DAIFMT_LEFT_J  |
 701         SND_SOC_POSSIBLE_DAIFMT_AC97;
 702
 703 static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = {
 704         .startup        = hdmi_codec_startup,
 705         .shutdown       = hdmi_codec_shutdown,
 706         .hw_params      = hdmi_codec_hw_params,
 707         .prepare        = hdmi_codec_prepare,
 708         .set_fmt        = hdmi_codec_i2s_set_fmt,
 709         .mute_stream    = hdmi_codec_mute,
 710         .auto_selectable_formats        = &hdmi_codec_formats,
 711         .num_auto_selectable_formats    = 1,
 712 };
 713
 714 static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = {
 715         .startup        = hdmi_codec_startup,
 716         .shutdown       = hdmi_codec_shutdown,
 717         .hw_params      = hdmi_codec_hw_params,
 718         .mute_stream    = hdmi_codec_mute,
 719 };
 720
 721 #define HDMI_RATES      (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
 722                          SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
 723                          SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
 724                          SNDRV_PCM_RATE_192000)
 725
 726 #define SPDIF_FORMATS   (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 727                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE)
 728
 729 /*
 730  * This list is only for formats allowed on the I2S bus. So there is
 731  * some formats listed that are not supported by HDMI interface. For
 732  * instance allowing the 32-bit formats enables 24-precision with CPU
 733  * DAIs that do not support 24-bit formats. If the extra formats cause
 734  * problems, we should add the video side driver an option to disable
 735  * them.
 736  */
 737 #define I2S_FORMATS     (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 738                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE |\
 739                          SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
 740
 741 static struct snd_kcontrol_new hdmi_codec_controls[] = {
 742         {
 743                 .access = SNDRV_CTL_ELEM_ACCESS_READ,
 744                 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
 745                 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
 746                 .info = hdmi_codec_iec958_info,
 747                 .get = hdmi_codec_iec958_mask_get,
 748         },
 749         {
 750                 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
 751                 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
 752                 .info = hdmi_codec_iec958_info,
 753                 .get = hdmi_codec_iec958_default_get,
 754                 .put = hdmi_codec_iec958_default_put,
 755         },
 756         {
 757                 .access = (SNDRV_CTL_ELEM_ACCESS_READ |
 758                            SNDRV_CTL_ELEM_ACCESS_VOLATILE),
 759                 .iface  = SNDRV_CTL_ELEM_IFACE_PCM,
 760                 .name   = "ELD",
 761                 .info   = hdmi_eld_ctl_info,
 762                 .get    = hdmi_eld_ctl_get,
 763         },
 764 };
 765
 766 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
 767                               struct snd_soc_dai *dai)
 768 {
 769         struct snd_soc_dai_driver *drv = dai->driver;
 770         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 771         unsigned int i;
 772         int ret;
 773
 774         ret =  snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
 775                                       NULL, drv->playback.channels_max, 0,
 776                                       &hcp->chmap_info);
 777         if (ret < 0)
 778                 return ret;
 779
 780         /* override handlers */
 781         hcp->chmap_info->private_data = hcp;
 782         hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
 783
 784         /* default chmap supported is stereo */
 785         hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
 786         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 787
 788         for (i = 0; i < ARRAY_SIZE(hdmi_codec_controls); i++) {
 789                 struct snd_kcontrol *kctl;
 790
 791                 /* add ELD ctl with the device number corresponding to the PCM stream */
 792                 kctl = snd_ctl_new1(&hdmi_codec_controls[i], dai->component);
 793                 if (!kctl)
 794                         return -ENOMEM;
 795
 796                 kctl->id.device = rtd->pcm->device;
 797                 ret = snd_ctl_add(rtd->card->snd_card, kctl);
 798                 if (ret < 0)
 799                         return ret;
 800         }
 801
 802         return 0;
 803 }
 804
 805 static int hdmi_dai_probe(struct snd_soc_dai *dai)
 806 {
 807         struct snd_soc_dapm_context *dapm;
 808         struct hdmi_codec_daifmt *daifmt;
 809         struct snd_soc_dapm_route route[] = {
 810                 {
 811                         .sink = "TX",
 812                         .source = dai->driver->playback.stream_name,
 813                 },
 814                 {
 815                         .sink = dai->driver->capture.stream_name,
 816                         .source = "RX",
 817                 },
 818         };
 819         int ret;
 820
 821         dapm = snd_soc_component_get_dapm(dai->component);
 822         ret = snd_soc_dapm_add_routes(dapm, route, 2);
 823         if (ret)
 824                 return ret;
 825
 826         daifmt = devm_kzalloc(dai->dev, sizeof(*daifmt), GFP_KERNEL);
 827         if (!daifmt)
 828                 return -ENOMEM;
 829
 830         dai->playback_dma_data = daifmt;
 831         return 0;
 832 }
 833
 834 static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp,
 835                                    unsigned int jack_status)
 836 {
 837         if (jack_status != hcp->jack_status) {
 838                 if (hcp->jack)
 839                         snd_soc_jack_report(hcp->jack, jack_status, SND_JACK_LINEOUT);
 840                 hcp->jack_status = jack_status;
 841         }
 842 }
 843
 844 static void plugged_cb(struct device *dev, bool plugged)
 845 {
 846         struct hdmi_codec_priv *hcp = dev_get_drvdata(dev);
 847
 848         if (plugged) {
 849                 if (hcp->hcd.ops->get_eld) {
 850                         hcp->hcd.ops->get_eld(dev->parent, hcp->hcd.data,
 851                                             hcp->eld, sizeof(hcp->eld));
 852                 }
 853                 hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT);
 854         } else {
 855                 hdmi_codec_jack_report(hcp, 0);
 856                 memset(hcp->eld, 0, sizeof(hcp->eld));
 857         }
 858 }
 859
 860 static int hdmi_codec_set_jack(struct snd_soc_component *component,
 861                                struct snd_soc_jack *jack,
 862                                void *data)
 863 {
 864         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 865
 866         if (hcp->hcd.ops->hook_plugged_cb) {
 867                 hcp->jack = jack;
 868
 869                 /*
 870                  * Report the initial jack status which may have been provided
 871                  * by the parent hdmi driver while the hpd hook was registered.
 872                  */
 873                 snd_soc_jack_report(jack, hcp->jack_status, SND_JACK_LINEOUT);
 874
 875                 return 0;
 876         }
 877
 878         return -ENOTSUPP;
 879 }
 880
 881 static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai)
 882 {
 883         struct hdmi_codec_daifmt *cf;
 884         int ret;
 885
 886         ret = hdmi_dai_probe(dai);
 887         if (ret)
 888                 return ret;
 889
 890         cf = dai->playback_dma_data;
 891         cf->fmt = HDMI_SPDIF;
 892
 893         return 0;
 894 }
 895
 896 static const struct snd_soc_dai_driver hdmi_i2s_dai = {
 897         .name = "i2s-hifi",
 898         .id = DAI_ID_I2S,
 899         .probe = hdmi_dai_probe,
 900         .playback = {
 901                 .stream_name = "I2S Playback",
 902                 .channels_min = 2,
 903                 .channels_max = 8,
 904                 .rates = HDMI_RATES,
 905                 .formats = I2S_FORMATS,
 906                 .sig_bits = 24,
 907         },
 908         .capture = {
 909                 .stream_name = "Capture",
 910                 .channels_min = 2,
 911                 .channels_max = 8,
 912                 .rates = HDMI_RATES,
 913                 .formats = I2S_FORMATS,
 914                 .sig_bits = 24,
 915         },
 916         .ops = &hdmi_codec_i2s_dai_ops,
 917         .pcm_new = hdmi_codec_pcm_new,
 918 };
 919
 920 static const struct snd_soc_dai_driver hdmi_spdif_dai = {
 921         .name = "spdif-hifi",
 922         .id = DAI_ID_SPDIF,
 923         .probe = hdmi_dai_spdif_probe,
 924         .playback = {
 925                 .stream_name = "SPDIF Playback",
 926                 .channels_min = 2,
 927                 .channels_max = 2,
 928                 .rates = HDMI_RATES,
 929                 .formats = SPDIF_FORMATS,
 930         },
 931         .capture = {
 932                 .stream_name = "Capture",
 933                 .channels_min = 2,
 934                 .channels_max = 2,
 935                 .rates = HDMI_RATES,
 936                 .formats = SPDIF_FORMATS,
 937         },
 938         .ops = &hdmi_codec_spdif_dai_ops,
 939         .pcm_new = hdmi_codec_pcm_new,
 940 };
 941
 942 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
 943                                  struct device_node *endpoint)
 944 {
 945         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 946         int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
 947
 948         if (hcp->hcd.ops->get_dai_id)
 949                 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
 950
 951         return ret;
 952 }
 953
 954 static int hdmi_probe(struct snd_soc_component *component)
 955 {
 956         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 957         int ret = 0;
 958
 959         if (hcp->hcd.ops->hook_plugged_cb) {
 960                 ret = hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
 961                                                     hcp->hcd.data,
 962                                                     plugged_cb,
 963                                                     component->dev);
 964         }
 965
 966         return ret;
 967 }
 968
 969 static void hdmi_remove(struct snd_soc_component *component)
 970 {
 971         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 972
 973         if (hcp->hcd.ops->hook_plugged_cb)
 974                 hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
 975                                               hcp->hcd.data, NULL, NULL);
 976 }
 977
 978 static const struct snd_soc_component_driver hdmi_driver = {
 979         .probe                  = hdmi_probe,
 980         .remove                 = hdmi_remove,
 981         .dapm_widgets           = hdmi_widgets,
 982         .num_dapm_widgets       = ARRAY_SIZE(hdmi_widgets),
 983         .of_xlate_dai_id        = hdmi_of_xlate_dai_id,
 984         .idle_bias_on           = 1,
 985         .use_pmdown_time        = 1,
 986         .endianness             = 1,
 987         .set_jack               = hdmi_codec_set_jack,
 988 };
 989
 990 static int hdmi_codec_probe(struct platform_device *pdev)
 991 {
 992         struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
 993         struct snd_soc_dai_driver *daidrv;
 994         struct device *dev = &pdev->dev;
 995         struct hdmi_codec_priv *hcp;
 996         int dai_count, i = 0;
 997         int ret;
 998
 999         if (!hcd) {
1000                 dev_err(dev, "%s: No platform data\n", __func__);
1001                 return -EINVAL;
1002         }
1003
1004         dai_count = hcd->i2s + hcd->spdif;
1005         if (dai_count < 1 || !hcd->ops ||
1006             (!hcd->ops->hw_params && !hcd->ops->prepare) ||
1007             !hcd->ops->audio_shutdown) {
1008                 dev_err(dev, "%s: Invalid parameters\n", __func__);
1009                 return -EINVAL;
1010         }
1011
1012         hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
1013         if (!hcp)
1014                 return -ENOMEM;
1015
1016         hcp->hcd = *hcd;
1017         mutex_init(&hcp->lock);
1018
1019         ret = snd_pcm_create_iec958_consumer_default(hcp->iec_status,
1020                                                      sizeof(hcp->iec_status));
1021         if (ret < 0)
1022                 return ret;
1023
1024         daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL);
1025         if (!daidrv)
1026                 return -ENOMEM;
1027
1028         if (hcd->i2s) {
1029                 daidrv[i] = hdmi_i2s_dai;
1030                 daidrv[i].playback.channels_max = hcd->max_i2s_channels;
1031                 i++;
1032         }
1033
1034         if (hcd->spdif)
1035                 daidrv[i] = hdmi_spdif_dai;
1036
1037         dev_set_drvdata(dev, hcp);
1038
1039         ret = devm_snd_soc_register_component(dev, &hdmi_driver, daidrv,
1040                                               dai_count);
1041         if (ret) {
1042                 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n",
1043                         __func__, ret);
1044                 return ret;
1045         }
1046         return 0;
1047 }
1048
1049 static struct platform_driver hdmi_codec_driver = {
1050         .driver = {
1051                 .name = HDMI_CODEC_DRV_NAME,
1052         },
1053         .probe = hdmi_codec_probe,
1054 };
1055
1056 module_platform_driver(hdmi_codec_driver);
1057
1058 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
1059 MODULE_DESCRIPTION("HDMI Audio Codec Driver");
1060 MODULE_LICENSE("GPL");
1061 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);