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 <[email protected]>
   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 #include <drm/drm_eld.h>
  21
  22 #define HDMI_CODEC_CHMAP_IDX_UNKNOWN  -1
  23
  24 /*
  25  * CEA speaker placement for HDMI 1.4:
  26  *
  27  *  FL  FLC   FC   FRC   FR   FRW
  28  *
  29  *                                  LFE
  30  *
  31  *  RL  RLC   RC   RRC   RR
  32  *
  33  *  Speaker placement has to be extended to support HDMI 2.0
  34  */
  35 enum hdmi_codec_cea_spk_placement {
  36         FL  = BIT(0),   /* Front Left           */
  37         FC  = BIT(1),   /* Front Center         */
  38         FR  = BIT(2),   /* Front Right          */
  39         FLC = BIT(3),   /* Front Left Center    */
  40         FRC = BIT(4),   /* Front Right Center   */
  41         RL  = BIT(5),   /* Rear Left            */
  42         RC  = BIT(6),   /* Rear Center          */
  43         RR  = BIT(7),   /* Rear Right           */
  44         RLC = BIT(8),   /* Rear Left Center     */
  45         RRC = BIT(9),   /* Rear Right Center    */
  46         LFE = BIT(10),  /* Low Frequency Effect */
  47 };
  48
  49 /*
  50  * cea Speaker allocation structure
  51  */
  52 struct hdmi_codec_cea_spk_alloc {
  53         const int ca_id;
  54         unsigned int n_ch;
  55         unsigned long mask;
  56 };
  57
  58 /* Channel maps  stereo HDMI */
  59 static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = {
  60         { .channels = 2,
  61           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
  62         { }
  63 };
  64
  65 /* Channel maps for multi-channel playbacks, up to 8 n_ch */
  66 static const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = {
  67         { .channels = 2, /* CA_ID 0x00 */
  68           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
  69         { .channels = 4, /* CA_ID 0x01 */
  70           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  71                    SNDRV_CHMAP_NA } },
  72         { .channels = 4, /* CA_ID 0x02 */
  73           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  74                    SNDRV_CHMAP_FC } },
  75         { .channels = 4, /* CA_ID 0x03 */
  76           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  77                    SNDRV_CHMAP_FC } },
  78         { .channels = 6, /* CA_ID 0x04 */
  79           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  80                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  81         { .channels = 6, /* CA_ID 0x05 */
  82           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  83                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  84         { .channels = 6, /* CA_ID 0x06 */
  85           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  86                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  87         { .channels = 6, /* CA_ID 0x07 */
  88           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  89                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  90         { .channels = 6, /* CA_ID 0x08 */
  91           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  92                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
  93         { .channels = 6, /* CA_ID 0x09 */
  94           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  95                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
  96         { .channels = 6, /* CA_ID 0x0A */
  97           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  98                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
  99         { .channels = 6, /* CA_ID 0x0B */
 100           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 101                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
 102         { .channels = 8, /* CA_ID 0x0C */
 103           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 104                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 105                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 106         { .channels = 8, /* CA_ID 0x0D */
 107           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 108                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 109                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 110         { .channels = 8, /* CA_ID 0x0E */
 111           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 112                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 113                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 114         { .channels = 8, /* CA_ID 0x0F */
 115           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 116                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 117                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 118         { .channels = 8, /* CA_ID 0x10 */
 119           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 120                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 121                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 122         { .channels = 8, /* CA_ID 0x11 */
 123           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 124                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 125                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 126         { .channels = 8, /* CA_ID 0x12 */
 127           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 128                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 129                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 130         { .channels = 8, /* CA_ID 0x13 */
 131           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 132                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 133                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 134         { .channels = 8, /* CA_ID 0x14 */
 135           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 136                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 137                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 138         { .channels = 8, /* CA_ID 0x15 */
 139           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 140                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 141                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 142         { .channels = 8, /* CA_ID 0x16 */
 143           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 144                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 145                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 146         { .channels = 8, /* CA_ID 0x17 */
 147           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 148                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 149                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 150         { .channels = 8, /* CA_ID 0x18 */
 151           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 152                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 153                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 154         { .channels = 8, /* CA_ID 0x19 */
 155           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 156                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 157                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 158         { .channels = 8, /* CA_ID 0x1A */
 159           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 160                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 161                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 162         { .channels = 8, /* CA_ID 0x1B */
 163           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 164                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 165                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 166         { .channels = 8, /* CA_ID 0x1C */
 167           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 168                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 169                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 170         { .channels = 8, /* CA_ID 0x1D */
 171           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 172                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 173                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 174         { .channels = 8, /* CA_ID 0x1E */
 175           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 176                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 177                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 178         { .channels = 8, /* CA_ID 0x1F */
 179           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 180                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 181                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 182         { }
 183 };
 184
 185 /*
 186  * hdmi_codec_channel_alloc: speaker configuration available for CEA
 187  *
 188  * This is an ordered list that must match with hdmi_codec_8ch_chmaps struct
 189  * The preceding ones have better chances to be selected by
 190  * hdmi_codec_get_ch_alloc_table_idx().
 191  */
 192 static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = {
 193         { .ca_id = 0x00, .n_ch = 2,
 194           .mask = FL | FR},
 195         /* 2.1 */
 196         { .ca_id = 0x01, .n_ch = 4,
 197           .mask = FL | FR | LFE},
 198         /* Dolby Surround */
 199         { .ca_id = 0x02, .n_ch = 4,
 200           .mask = FL | FR | FC },
 201         /* surround51 */
 202         { .ca_id = 0x0b, .n_ch = 6,
 203           .mask = FL | FR | LFE | FC | RL | RR},
 204         /* surround40 */
 205         { .ca_id = 0x08, .n_ch = 6,
 206           .mask = FL | FR | RL | RR },
 207         /* surround41 */
 208         { .ca_id = 0x09, .n_ch = 6,
 209           .mask = FL | FR | LFE | RL | RR },
 210         /* surround50 */
 211         { .ca_id = 0x0a, .n_ch = 6,
 212           .mask = FL | FR | FC | RL | RR },
 213         /* 6.1 */
 214         { .ca_id = 0x0f, .n_ch = 8,
 215           .mask = FL | FR | LFE | FC | RL | RR | RC },
 216         /* surround71 */
 217         { .ca_id = 0x13, .n_ch = 8,
 218           .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC },
 219         /* others */
 220         { .ca_id = 0x03, .n_ch = 8,
 221           .mask = FL | FR | LFE | FC },
 222         { .ca_id = 0x04, .n_ch = 8,
 223           .mask = FL | FR | RC},
 224         { .ca_id = 0x05, .n_ch = 8,
 225           .mask = FL | FR | LFE | RC },
 226         { .ca_id = 0x06, .n_ch = 8,
 227           .mask = FL | FR | FC | RC },
 228         { .ca_id = 0x07, .n_ch = 8,
 229           .mask = FL | FR | LFE | FC | RC },
 230         { .ca_id = 0x0c, .n_ch = 8,
 231           .mask = FL | FR | RC | RL | RR },
 232         { .ca_id = 0x0d, .n_ch = 8,
 233           .mask = FL | FR | LFE | RL | RR | RC },
 234         { .ca_id = 0x0e, .n_ch = 8,
 235           .mask = FL | FR | FC | RL | RR | RC },
 236         { .ca_id = 0x10, .n_ch = 8,
 237           .mask = FL | FR | RL | RR | RLC | RRC },
 238         { .ca_id = 0x11, .n_ch = 8,
 239           .mask = FL | FR | LFE | RL | RR | RLC | RRC },
 240         { .ca_id = 0x12, .n_ch = 8,
 241           .mask = FL | FR | FC | RL | RR | RLC | RRC },
 242         { .ca_id = 0x14, .n_ch = 8,
 243           .mask = FL | FR | FLC | FRC },
 244         { .ca_id = 0x15, .n_ch = 8,
 245           .mask = FL | FR | LFE | FLC | FRC },
 246         { .ca_id = 0x16, .n_ch = 8,
 247           .mask = FL | FR | FC | FLC | FRC },
 248         { .ca_id = 0x17, .n_ch = 8,
 249           .mask = FL | FR | LFE | FC | FLC | FRC },
 250         { .ca_id = 0x18, .n_ch = 8,
 251           .mask = FL | FR | RC | FLC | FRC },
 252         { .ca_id = 0x19, .n_ch = 8,
 253           .mask = FL | FR | LFE | RC | FLC | FRC },
 254         { .ca_id = 0x1a, .n_ch = 8,
 255           .mask = FL | FR | RC | FC | FLC | FRC },
 256         { .ca_id = 0x1b, .n_ch = 8,
 257           .mask = FL | FR | LFE | RC | FC | FLC | FRC },
 258         { .ca_id = 0x1c, .n_ch = 8,
 259           .mask = FL | FR | RL | RR | FLC | FRC },
 260         { .ca_id = 0x1d, .n_ch = 8,
 261           .mask = FL | FR | LFE | RL | RR | FLC | FRC },
 262         { .ca_id = 0x1e, .n_ch = 8,
 263           .mask = FL | FR | FC | RL | RR | FLC | FRC },
 264         { .ca_id = 0x1f, .n_ch = 8,
 265           .mask = FL | FR | LFE | FC | RL | RR | FLC | FRC },
 266 };
 267
 268 struct hdmi_codec_priv {
 269         struct hdmi_codec_pdata hcd;
 270         uint8_t eld[MAX_ELD_BYTES];
 271         struct snd_pcm_chmap *chmap_info;
 272         unsigned int chmap_idx;
 273         struct mutex lock;
 274         bool busy;
 275         struct snd_soc_jack *jack;
 276         unsigned int jack_status;
 277         u8 iec_status[AES_IEC958_STATUS_SIZE];
 278 };
 279
 280 static const struct snd_soc_dapm_widget hdmi_widgets[] = {
 281         SND_SOC_DAPM_OUTPUT("TX"),
 282         SND_SOC_DAPM_OUTPUT("RX"),
 283 };
 284
 285 enum {
 286         DAI_ID_I2S = 0,
 287         DAI_ID_SPDIF,
 288 };
 289
 290 static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
 291                              struct snd_ctl_elem_info *uinfo)
 292 {
 293         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
 294         uinfo->count = sizeof_field(struct hdmi_codec_priv, eld);
 295
 296         return 0;
 297 }
 298
 299 static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
 300                             struct snd_ctl_elem_value *ucontrol)
 301 {
 302         struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
 303         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 304
 305         memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld));
 306
 307         return 0;
 308 }
 309
 310 static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
 311 {
 312         int i;
 313         static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
 314                 [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
 315                 [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
 316         };
 317         unsigned long spk_mask = 0;
 318
 319         for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) {
 320                 if (spk_alloc & (1 << i))
 321                         spk_mask |= hdmi_codec_eld_spk_alloc_bits[i];
 322         }
 323
 324         return spk_mask;
 325 }
 326
 327 static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
 328 {
 329         u8 spk_alloc;
 330         unsigned long spk_mask;
 331
 332         spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
 333         spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
 334
 335         /* Detect if only stereo supported, else return 8 channels mappings */
 336         if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
 337                 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
 338         else
 339                 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
 340 }
 341
 342 static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
 343                                              unsigned char channels)
 344 {
 345         int i;
 346         u8 spk_alloc;
 347         unsigned long spk_mask;
 348         const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
 349
 350         spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
 351         spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
 352
 353         for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
 354                 /* If spk_alloc == 0, HDMI is unplugged return stereo config*/
 355                 if (!spk_alloc && cap->ca_id == 0)
 356                         return i;
 357                 if (cap->n_ch != channels)
 358                         continue;
 359                 if (!(cap->mask == (spk_mask & cap->mask)))
 360                         continue;
 361                 return i;
 362         }
 363
 364         return -EINVAL;
 365 }
 366 static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
 367                               struct snd_ctl_elem_value *ucontrol)
 368 {
 369         unsigned const char *map;
 370         unsigned int i;
 371         struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
 372         struct hdmi_codec_priv *hcp = info->private_data;
 373
 374         map = info->chmap[hcp->chmap_idx].map;
 375
 376         for (i = 0; i < info->max_channels; i++) {
 377                 if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN)
 378                         ucontrol->value.integer.value[i] = 0;
 379                 else
 380                         ucontrol->value.integer.value[i] = map[i];
 381         }
 382
 383         return 0;
 384 }
 385
 386 static int hdmi_codec_iec958_info(struct snd_kcontrol *kcontrol,
 387                                   struct snd_ctl_elem_info *uinfo)
 388 {
 389         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
 390         uinfo->count = 1;
 391         return 0;
 392 }
 393
 394 static int hdmi_codec_iec958_default_get(struct snd_kcontrol *kcontrol,
 395                                          struct snd_ctl_elem_value *ucontrol)
 396 {
 397         struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
 398         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 399
 400         memcpy(ucontrol->value.iec958.status, hcp->iec_status,
 401                sizeof(hcp->iec_status));
 402
 403         return 0;
 404 }
 405
 406 static int hdmi_codec_iec958_default_put(struct snd_kcontrol *kcontrol,
 407                                          struct snd_ctl_elem_value *ucontrol)
 408 {
 409         struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
 410         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 411
 412         memcpy(hcp->iec_status, ucontrol->value.iec958.status,
 413                sizeof(hcp->iec_status));
 414
 415         return 0;
 416 }
 417
 418 static int hdmi_codec_iec958_mask_get(struct snd_kcontrol *kcontrol,
 419                                       struct snd_ctl_elem_value *ucontrol)
 420 {
 421         memset(ucontrol->value.iec958.status, 0xff,
 422                sizeof_field(struct hdmi_codec_priv, iec_status));
 423
 424         return 0;
 425 }
 426
 427 static int hdmi_codec_startup(struct snd_pcm_substream *substream,
 428                               struct snd_soc_dai *dai)
 429 {
 430         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 431         bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 432         bool has_capture = !hcp->hcd.no_i2s_capture;
 433         bool has_playback = !hcp->hcd.no_i2s_playback;
 434         int ret = 0;
 435
 436         if (!((has_playback && tx) || (has_capture && !tx)))
 437                 return 0;
 438
 439         mutex_lock(&hcp->lock);
 440         if (hcp->busy) {
 441                 dev_err(dai->dev, "Only one simultaneous stream supported!\n");
 442                 mutex_unlock(&hcp->lock);
 443                 return -EINVAL;
 444         }
 445
 446         if (hcp->hcd.ops->audio_startup) {
 447                 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
 448                 if (ret)
 449                         goto err;
 450         }
 451
 452         if (tx && hcp->hcd.ops->get_eld) {
 453                 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
 454                                             hcp->eld, sizeof(hcp->eld));
 455                 if (ret)
 456                         goto err;
 457
 458                 ret = snd_pcm_hw_constraint_eld(substream->runtime, hcp->eld);
 459                 if (ret)
 460                         goto err;
 461
 462                 /* Select chmap supported */
 463                 hdmi_codec_eld_chmap(hcp);
 464         }
 465
 466         hcp->busy = true;
 467
 468 err:
 469         mutex_unlock(&hcp->lock);
 470         return ret;
 471 }
 472
 473 static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
 474                                 struct snd_soc_dai *dai)
 475 {
 476         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 477         bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 478         bool has_capture = !hcp->hcd.no_i2s_capture;
 479         bool has_playback = !hcp->hcd.no_i2s_playback;
 480
 481         if (!((has_playback && tx) || (has_capture && !tx)))
 482                 return;
 483
 484         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 485         hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
 486
 487         mutex_lock(&hcp->lock);
 488         hcp->busy = false;
 489         mutex_unlock(&hcp->lock);
 490 }
 491
 492 static int hdmi_codec_fill_codec_params(struct snd_soc_dai *dai,
 493                                         unsigned int sample_width,
 494                                         unsigned int sample_rate,
 495                                         unsigned int channels,
 496                                         struct hdmi_codec_params *hp)
 497 {
 498         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 499         int idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 500         u8 ca_id = 0;
 501         bool pcm_audio = !(hcp->iec_status[0] & IEC958_AES0_NONAUDIO);
 502
 503         if (pcm_audio) {
 504                 /* Select a channel allocation that matches with ELD and pcm channels */
 505                 idx = hdmi_codec_get_ch_alloc_table_idx(hcp, channels);
 506
 507                 if (idx < 0) {
 508                         dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
 509                                 idx);
 510                         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 511                         return idx;
 512                 }
 513
 514                 ca_id = hdmi_codec_channel_alloc[idx].ca_id;
 515         }
 516
 517         memset(hp, 0, sizeof(*hp));
 518
 519         hdmi_audio_infoframe_init(&hp->cea);
 520
 521         if (pcm_audio)
 522                 hp->cea.channels = channels;
 523         else
 524                 hp->cea.channels = 0;
 525
 526         hp->cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
 527         hp->cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
 528         hp->cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
 529         hp->cea.channel_allocation = ca_id;
 530
 531         hp->sample_width = sample_width;
 532         hp->sample_rate = sample_rate;
 533         hp->channels = channels;
 534
 535         if (pcm_audio)
 536                 hcp->chmap_idx = ca_id;
 537         else
 538                 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 539
 540         return 0;
 541 }
 542
 543 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
 544                                 struct snd_pcm_hw_params *params,
 545                                 struct snd_soc_dai *dai)
 546 {
 547         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 548         struct hdmi_codec_daifmt *cf = snd_soc_dai_dma_data_get_playback(dai);
 549         struct hdmi_codec_params hp = {
 550                 .iec = {
 551                         .status = { 0 },
 552                         .subcode = { 0 },
 553                         .pad = 0,
 554                         .dig_subframe = { 0 },
 555                 }
 556         };
 557         int ret;
 558
 559         if (!hcp->hcd.ops->hw_params)
 560                 return 0;
 561
 562         dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
 563                 params_width(params), params_rate(params),
 564                 params_channels(params));
 565
 566         ret = hdmi_codec_fill_codec_params(dai,
 567                                            params_width(params),
 568                                            params_rate(params),
 569                                            params_channels(params),
 570                                            &hp);
 571         if (ret < 0)
 572                 return ret;
 573
 574         memcpy(hp.iec.status, hcp->iec_status, sizeof(hp.iec.status));
 575         ret = snd_pcm_fill_iec958_consumer_hw_params(params, hp.iec.status,
 576                                                      sizeof(hp.iec.status));
 577         if (ret < 0) {
 578                 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
 579                         ret);
 580                 return ret;
 581         }
 582
 583         cf->bit_fmt = params_format(params);
 584         return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
 585                                        cf, &hp);
 586 }
 587
 588 static int hdmi_codec_prepare(struct snd_pcm_substream *substream,
 589                               struct snd_soc_dai *dai)
 590 {
 591         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 592         struct hdmi_codec_daifmt *cf = snd_soc_dai_dma_data_get_playback(dai);
 593         struct snd_pcm_runtime *runtime = substream->runtime;
 594         unsigned int channels = runtime->channels;
 595         unsigned int width = snd_pcm_format_width(runtime->format);
 596         unsigned int rate = runtime->rate;
 597         struct hdmi_codec_params hp;
 598         int ret;
 599
 600         if (!hcp->hcd.ops->prepare)
 601                 return 0;
 602
 603         dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
 604                 width, rate, channels);
 605
 606         ret = hdmi_codec_fill_codec_params(dai, width, rate, channels, &hp);
 607         if (ret < 0)
 608                 return ret;
 609
 610         memcpy(hp.iec.status, hcp->iec_status, sizeof(hp.iec.status));
 611         ret = snd_pcm_fill_iec958_consumer(runtime, hp.iec.status,
 612                                            sizeof(hp.iec.status));
 613         if (ret < 0) {
 614                 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
 615                         ret);
 616                 return ret;
 617         }
 618
 619         cf->bit_fmt = runtime->format;
 620         return hcp->hcd.ops->prepare(dai->dev->parent, hcp->hcd.data,
 621                                      cf, &hp);
 622 }
 623
 624 static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai,
 625                                   unsigned int fmt)
 626 {
 627         struct hdmi_codec_daifmt *cf = snd_soc_dai_dma_data_get_playback(dai);
 628
 629         /* Reset daifmt */
 630         memset(cf, 0, sizeof(*cf));
 631
 632         switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
 633         case SND_SOC_DAIFMT_CBP_CFP:
 634                 cf->bit_clk_provider = 1;
 635                 cf->frame_clk_provider = 1;
 636                 break;
 637         case SND_SOC_DAIFMT_CBC_CFP:
 638                 cf->frame_clk_provider = 1;
 639                 break;
 640         case SND_SOC_DAIFMT_CBP_CFC:
 641                 cf->bit_clk_provider = 1;
 642                 break;
 643         case SND_SOC_DAIFMT_CBC_CFC:
 644                 break;
 645         default:
 646                 return -EINVAL;
 647         }
 648
 649         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 650         case SND_SOC_DAIFMT_NB_NF:
 651                 break;
 652         case SND_SOC_DAIFMT_NB_IF:
 653                 cf->frame_clk_inv = 1;
 654                 break;
 655         case SND_SOC_DAIFMT_IB_NF:
 656                 cf->bit_clk_inv = 1;
 657                 break;
 658         case SND_SOC_DAIFMT_IB_IF:
 659                 cf->frame_clk_inv = 1;
 660                 cf->bit_clk_inv = 1;
 661                 break;
 662         }
 663
 664         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 665         case SND_SOC_DAIFMT_I2S:
 666                 cf->fmt = HDMI_I2S;
 667                 break;
 668         case SND_SOC_DAIFMT_DSP_A:
 669                 cf->fmt = HDMI_DSP_A;
 670                 break;
 671         case SND_SOC_DAIFMT_DSP_B:
 672                 cf->fmt = HDMI_DSP_B;
 673                 break;
 674         case SND_SOC_DAIFMT_RIGHT_J:
 675                 cf->fmt = HDMI_RIGHT_J;
 676                 break;
 677         case SND_SOC_DAIFMT_LEFT_J:
 678                 cf->fmt = HDMI_LEFT_J;
 679                 break;
 680         case SND_SOC_DAIFMT_AC97:
 681                 cf->fmt = HDMI_AC97;
 682                 break;
 683         default:
 684                 dev_err(dai->dev, "Invalid DAI interface format\n");
 685                 return -EINVAL;
 686         }
 687
 688         return 0;
 689 }
 690
 691 static int hdmi_codec_mute(struct snd_soc_dai *dai, int mute, int direction)
 692 {
 693         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 694
 695         /*
 696          * ignore if direction was CAPTURE
 697          * and it had .no_capture_mute flag
 698          * see
 699          *      snd_soc_dai_digital_mute()
 700          */
 701         if (hcp->hcd.ops->mute_stream &&
 702             (direction == SNDRV_PCM_STREAM_PLAYBACK ||
 703              !hcp->hcd.ops->no_capture_mute))
 704                 return hcp->hcd.ops->mute_stream(dai->dev->parent,
 705                                                  hcp->hcd.data,
 706                                                  mute, direction);
 707
 708         return -ENOTSUPP;
 709 }
 710
 711 /*
 712  * This driver can select all SND_SOC_DAIFMT_CBx_CFx,
 713  * but need to be selected from Sound Card, not be auto selected.
 714  * Because it might be used from other driver.
 715  * For example,
 716  *      ${LINUX}/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
 717  */
 718 static const u64 hdmi_codec_formats =
 719         SND_SOC_POSSIBLE_DAIFMT_NB_NF   |
 720         SND_SOC_POSSIBLE_DAIFMT_NB_IF   |
 721         SND_SOC_POSSIBLE_DAIFMT_IB_NF   |
 722         SND_SOC_POSSIBLE_DAIFMT_IB_IF   |
 723         SND_SOC_POSSIBLE_DAIFMT_I2S     |
 724         SND_SOC_POSSIBLE_DAIFMT_DSP_A   |
 725         SND_SOC_POSSIBLE_DAIFMT_DSP_B   |
 726         SND_SOC_POSSIBLE_DAIFMT_RIGHT_J |
 727         SND_SOC_POSSIBLE_DAIFMT_LEFT_J  |
 728         SND_SOC_POSSIBLE_DAIFMT_AC97;
 729
 730 #define HDMI_RATES      (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
 731                          SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
 732                          SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
 733                          SNDRV_PCM_RATE_192000)
 734
 735 #define SPDIF_FORMATS   (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 736                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE)
 737
 738 /*
 739  * This list is only for formats allowed on the I2S bus. So there is
 740  * some formats listed that are not supported by HDMI interface. For
 741  * instance allowing the 32-bit formats enables 24-precision with CPU
 742  * DAIs that do not support 24-bit formats. If the extra formats cause
 743  * problems, we should add the video side driver an option to disable
 744  * them.
 745  */
 746 #define I2S_FORMATS     (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 747                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE |\
 748                          SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
 749
 750 static struct snd_kcontrol_new hdmi_codec_controls[] = {
 751         {
 752                 .access = SNDRV_CTL_ELEM_ACCESS_READ,
 753                 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
 754                 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
 755                 .info = hdmi_codec_iec958_info,
 756                 .get = hdmi_codec_iec958_mask_get,
 757         },
 758         {
 759                 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
 760                 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
 761                 .info = hdmi_codec_iec958_info,
 762                 .get = hdmi_codec_iec958_default_get,
 763                 .put = hdmi_codec_iec958_default_put,
 764         },
 765         {
 766                 .access = (SNDRV_CTL_ELEM_ACCESS_READ |
 767                            SNDRV_CTL_ELEM_ACCESS_VOLATILE),
 768                 .iface  = SNDRV_CTL_ELEM_IFACE_PCM,
 769                 .name   = "ELD",
 770                 .info   = hdmi_eld_ctl_info,
 771                 .get    = hdmi_eld_ctl_get,
 772         },
 773 };
 774
 775 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
 776                               struct snd_soc_dai *dai)
 777 {
 778         struct snd_soc_dai_driver *drv = dai->driver;
 779         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 780         unsigned int i;
 781         int ret;
 782
 783         ret =  snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
 784                                       NULL, drv->playback.channels_max, 0,
 785                                       &hcp->chmap_info);
 786         if (ret < 0)
 787                 return ret;
 788
 789         /* override handlers */
 790         hcp->chmap_info->private_data = hcp;
 791         hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
 792
 793         /* default chmap supported is stereo */
 794         hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
 795         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 796
 797         for (i = 0; i < ARRAY_SIZE(hdmi_codec_controls); i++) {
 798                 struct snd_kcontrol *kctl;
 799
 800                 /* add ELD ctl with the device number corresponding to the PCM stream */
 801                 kctl = snd_ctl_new1(&hdmi_codec_controls[i], dai->component);
 802                 if (!kctl)
 803                         return -ENOMEM;
 804
 805                 kctl->id.device = rtd->pcm->device;
 806                 ret = snd_ctl_add(rtd->card->snd_card, kctl);
 807                 if (ret < 0)
 808                         return ret;
 809         }
 810
 811         return 0;
 812 }
 813
 814 static int hdmi_dai_probe(struct snd_soc_dai *dai)
 815 {
 816         struct snd_soc_dapm_context *dapm;
 817         struct hdmi_codec_daifmt *daifmt;
 818         struct snd_soc_dapm_route route[] = {
 819                 {
 820                         .sink = "TX",
 821                         .source = dai->driver->playback.stream_name,
 822                 },
 823                 {
 824                         .sink = dai->driver->capture.stream_name,
 825                         .source = "RX",
 826                 },
 827         };
 828         int ret, i;
 829
 830         dapm = snd_soc_component_get_dapm(dai->component);
 831
 832         /* One of the directions might be omitted for unidirectional DAIs */
 833         for (i = 0; i < ARRAY_SIZE(route); i++) {
 834                 if (!route[i].source || !route[i].sink)
 835                         continue;
 836
 837                 ret = snd_soc_dapm_add_routes(dapm, &route[i], 1);
 838                 if (ret)
 839                         return ret;
 840         }
 841
 842         daifmt = devm_kzalloc(dai->dev, sizeof(*daifmt), GFP_KERNEL);
 843         if (!daifmt)
 844                 return -ENOMEM;
 845
 846         snd_soc_dai_dma_data_set_playback(dai, daifmt);
 847
 848         return 0;
 849 }
 850
 851 static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp,
 852                                    unsigned int jack_status)
 853 {
 854         if (jack_status != hcp->jack_status) {
 855                 if (hcp->jack)
 856                         snd_soc_jack_report(hcp->jack, jack_status, SND_JACK_LINEOUT);
 857                 hcp->jack_status = jack_status;
 858         }
 859 }
 860
 861 static void plugged_cb(struct device *dev, bool plugged)
 862 {
 863         struct hdmi_codec_priv *hcp = dev_get_drvdata(dev);
 864
 865         if (plugged) {
 866                 if (hcp->hcd.ops->get_eld) {
 867                         hcp->hcd.ops->get_eld(dev->parent, hcp->hcd.data,
 868                                             hcp->eld, sizeof(hcp->eld));
 869                 }
 870                 hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT);
 871         } else {
 872                 hdmi_codec_jack_report(hcp, 0);
 873                 memset(hcp->eld, 0, sizeof(hcp->eld));
 874         }
 875 }
 876
 877 static int hdmi_codec_set_jack(struct snd_soc_component *component,
 878                                struct snd_soc_jack *jack,
 879                                void *data)
 880 {
 881         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 882
 883         if (hcp->hcd.ops->hook_plugged_cb) {
 884                 hcp->jack = jack;
 885
 886                 /*
 887                  * Report the initial jack status which may have been provided
 888                  * by the parent hdmi driver while the hpd hook was registered.
 889                  */
 890                 snd_soc_jack_report(jack, hcp->jack_status, SND_JACK_LINEOUT);
 891
 892                 return 0;
 893         }
 894
 895         return -ENOTSUPP;
 896 }
 897
 898 static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai)
 899 {
 900         struct hdmi_codec_daifmt *cf;
 901         int ret;
 902
 903         ret = hdmi_dai_probe(dai);
 904         if (ret)
 905                 return ret;
 906
 907         cf = snd_soc_dai_dma_data_get_playback(dai);
 908         cf->fmt = HDMI_SPDIF;
 909
 910         return 0;
 911 }
 912
 913 static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = {
 914         .probe                          = hdmi_dai_probe,
 915         .startup                        = hdmi_codec_startup,
 916         .shutdown                       = hdmi_codec_shutdown,
 917         .hw_params                      = hdmi_codec_hw_params,
 918         .prepare                        = hdmi_codec_prepare,
 919         .set_fmt                        = hdmi_codec_i2s_set_fmt,
 920         .mute_stream                    = hdmi_codec_mute,
 921         .pcm_new                        = hdmi_codec_pcm_new,
 922         .auto_selectable_formats        = &hdmi_codec_formats,
 923         .num_auto_selectable_formats    = 1,
 924 };
 925
 926 static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = {
 927         .probe          = hdmi_dai_spdif_probe,
 928         .startup        = hdmi_codec_startup,
 929         .shutdown       = hdmi_codec_shutdown,
 930         .hw_params      = hdmi_codec_hw_params,
 931         .mute_stream    = hdmi_codec_mute,
 932         .pcm_new        = hdmi_codec_pcm_new,
 933 };
 934
 935 static const struct snd_soc_dai_driver hdmi_i2s_dai = {
 936         .name = "i2s-hifi",
 937         .id = DAI_ID_I2S,
 938         .playback = {
 939                 .stream_name = "I2S Playback",
 940                 .channels_min = 2,
 941                 .channels_max = 8,
 942                 .rates = HDMI_RATES,
 943                 .formats = I2S_FORMATS,
 944                 .sig_bits = 24,
 945         },
 946         .capture = {
 947                 .stream_name = "Capture",
 948                 .channels_min = 2,
 949                 .channels_max = 8,
 950                 .rates = HDMI_RATES,
 951                 .formats = I2S_FORMATS,
 952                 .sig_bits = 24,
 953         },
 954         .ops = &hdmi_codec_i2s_dai_ops,
 955 };
 956
 957 static const struct snd_soc_dai_driver hdmi_spdif_dai = {
 958         .name = "spdif-hifi",
 959         .id = DAI_ID_SPDIF,
 960         .playback = {
 961                 .stream_name = "SPDIF Playback",
 962                 .channels_min = 2,
 963                 .channels_max = 2,
 964                 .rates = HDMI_RATES,
 965                 .formats = SPDIF_FORMATS,
 966         },
 967         .capture = {
 968                 .stream_name = "Capture",
 969                 .channels_min = 2,
 970                 .channels_max = 2,
 971                 .rates = HDMI_RATES,
 972                 .formats = SPDIF_FORMATS,
 973         },
 974         .ops = &hdmi_codec_spdif_dai_ops,
 975 };
 976
 977 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
 978                                  struct device_node *endpoint)
 979 {
 980         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 981         int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
 982
 983         if (hcp->hcd.ops->get_dai_id)
 984                 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
 985
 986         return ret;
 987 }
 988
 989 static int hdmi_probe(struct snd_soc_component *component)
 990 {
 991         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 992         int ret = 0;
 993
 994         if (hcp->hcd.ops->hook_plugged_cb) {
 995                 ret = hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
 996                                                     hcp->hcd.data,
 997                                                     plugged_cb,
 998                                                     component->dev);
 999         }
1000
1001         return ret;
1002 }
1003
1004 static void hdmi_remove(struct snd_soc_component *component)
1005 {
1006         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
1007
1008         if (hcp->hcd.ops->hook_plugged_cb)
1009                 hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
1010                                               hcp->hcd.data, NULL, NULL);
1011 }
1012
1013 static const struct snd_soc_component_driver hdmi_driver = {
1014         .probe                  = hdmi_probe,
1015         .remove                 = hdmi_remove,
1016         .dapm_widgets           = hdmi_widgets,
1017         .num_dapm_widgets       = ARRAY_SIZE(hdmi_widgets),
1018         .of_xlate_dai_id        = hdmi_of_xlate_dai_id,
1019         .idle_bias_on           = 1,
1020         .use_pmdown_time        = 1,
1021         .endianness             = 1,
1022         .set_jack               = hdmi_codec_set_jack,
1023 };
1024
1025 static int hdmi_codec_probe(struct platform_device *pdev)
1026 {
1027         struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
1028         struct snd_soc_dai_driver *daidrv;
1029         struct device *dev = &pdev->dev;
1030         struct hdmi_codec_priv *hcp;
1031         int dai_count, i = 0;
1032         int ret;
1033
1034         if (!hcd) {
1035                 dev_err(dev, "%s: No platform data\n", __func__);
1036                 return -EINVAL;
1037         }
1038
1039         dai_count = hcd->i2s + hcd->spdif;
1040         if (dai_count < 1 || !hcd->ops ||
1041             (!hcd->ops->hw_params && !hcd->ops->prepare) ||
1042             !hcd->ops->audio_shutdown) {
1043                 dev_err(dev, "%s: Invalid parameters\n", __func__);
1044                 return -EINVAL;
1045         }
1046
1047         hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
1048         if (!hcp)
1049                 return -ENOMEM;
1050
1051         hcp->hcd = *hcd;
1052         mutex_init(&hcp->lock);
1053
1054         ret = snd_pcm_create_iec958_consumer_default(hcp->iec_status,
1055                                                      sizeof(hcp->iec_status));
1056         if (ret < 0)
1057                 return ret;
1058
1059         daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL);
1060         if (!daidrv)
1061                 return -ENOMEM;
1062
1063         if (hcd->i2s) {
1064                 daidrv[i] = hdmi_i2s_dai;
1065                 daidrv[i].playback.channels_max = hcd->max_i2s_channels;
1066                 if (hcd->no_i2s_playback)
1067                         memset(&daidrv[i].playback, 0,
1068                                sizeof(daidrv[i].playback));
1069                 if (hcd->no_i2s_capture)
1070                         memset(&daidrv[i].capture, 0,
1071                                sizeof(daidrv[i].capture));
1072                 i++;
1073         }
1074
1075         if (hcd->spdif) {
1076                 daidrv[i] = hdmi_spdif_dai;
1077                 if (hcd->no_spdif_playback)
1078                         memset(&daidrv[i].playback, 0,
1079                                sizeof(daidrv[i].playback));
1080                 if (hcd->no_spdif_capture)
1081                         memset(&daidrv[i].capture, 0,
1082                                sizeof(daidrv[i].capture));
1083         }
1084
1085         dev_set_drvdata(dev, hcp);
1086
1087         ret = devm_snd_soc_register_component(dev, &hdmi_driver, daidrv,
1088                                               dai_count);
1089         if (ret) {
1090                 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n",
1091                         __func__, ret);
1092                 return ret;
1093         }
1094         return 0;
1095 }
1096
1097 static struct platform_driver hdmi_codec_driver = {
1098         .driver = {
1099                 .name = HDMI_CODEC_DRV_NAME,
1100         },
1101         .probe = hdmi_codec_probe,
1102 };
1103
1104 module_platform_driver(hdmi_codec_driver);
1105
1106 MODULE_AUTHOR("Jyri Sarha <[email protected]>");
1107 MODULE_DESCRIPTION("HDMI Audio Codec Driver");
1108 MODULE_LICENSE("GPL");
1109 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);