sound/soc/codecs/hdmi-codec.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * ALSA SoC codec for HDMI encoder drivers
   4  * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
   5  * Author: Jyri Sarha <jsarha@ti.com>
   6  */
   7 #include <linux/module.h>
   8 #include <linux/string.h>
   9 #include <sound/core.h>
  10 #include <sound/jack.h>
  11 #include <sound/pcm.h>
  12 #include <sound/pcm_params.h>
  13 #include <sound/soc.h>
  14 #include <sound/tlv.h>
  15 #include <sound/pcm_drm_eld.h>
  16 #include <sound/hdmi-codec.h>
  17 #include <sound/pcm_iec958.h>
  18
  19 #include <drm/drm_crtc.h> /* This is only to get MAX_ELD_BYTES */
  20
  21 #define HDMI_CODEC_CHMAP_IDX_UNKNOWN  -1
  22
  23 struct hdmi_codec_channel_map_table {
  24         unsigned char map;      /* ALSA API channel map position */
  25 };
  26
  27 /*
  28  * CEA speaker placement for HDMI 1.4:
  29  *
  30  *  FL  FLC   FC   FRC   FR   FRW
  31  *
  32  *                                  LFE
  33  *
  34  *  RL  RLC   RC   RRC   RR
  35  *
  36  *  Speaker placement has to be extended to support HDMI 2.0
  37  */
  38 enum hdmi_codec_cea_spk_placement {
  39         FL  = BIT(0),   /* Front Left           */
  40         FC  = BIT(1),   /* Front Center         */
  41         FR  = BIT(2),   /* Front Right          */
  42         FLC = BIT(3),   /* Front Left Center    */
  43         FRC = BIT(4),   /* Front Right Center   */
  44         RL  = BIT(5),   /* Rear Left            */
  45         RC  = BIT(6),   /* Rear Center          */
  46         RR  = BIT(7),   /* Rear Right           */
  47         RLC = BIT(8),   /* Rear Left Center     */
  48         RRC = BIT(9),   /* Rear Right Center    */
  49         LFE = BIT(10),  /* Low Frequency Effect */
  50 };
  51
  52 /*
  53  * cea Speaker allocation structure
  54  */
  55 struct hdmi_codec_cea_spk_alloc {
  56         const int ca_id;
  57         unsigned int n_ch;
  58         unsigned long mask;
  59 };
  60
  61 /* Channel maps  stereo HDMI */
  62 static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = {
  63         { .channels = 2,
  64           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
  65         { }
  66 };
  67
  68 /* Channel maps for multi-channel playbacks, up to 8 n_ch */
  69 static const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = {
  70         { .channels = 2, /* CA_ID 0x00 */
  71           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
  72         { .channels = 4, /* CA_ID 0x01 */
  73           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  74                    SNDRV_CHMAP_NA } },
  75         { .channels = 4, /* CA_ID 0x02 */
  76           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  77                    SNDRV_CHMAP_FC } },
  78         { .channels = 4, /* CA_ID 0x03 */
  79           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  80                    SNDRV_CHMAP_FC } },
  81         { .channels = 6, /* CA_ID 0x04 */
  82           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  83                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  84         { .channels = 6, /* CA_ID 0x05 */
  85           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  86                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  87         { .channels = 6, /* CA_ID 0x06 */
  88           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  89                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  90         { .channels = 6, /* CA_ID 0x07 */
  91           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  92                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  93         { .channels = 6, /* CA_ID 0x08 */
  94           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  95                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
  96         { .channels = 6, /* CA_ID 0x09 */
  97           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  98                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
  99         { .channels = 6, /* CA_ID 0x0A */
 100           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 101                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
 102         { .channels = 6, /* CA_ID 0x0B */
 103           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 104                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
 105         { .channels = 8, /* CA_ID 0x0C */
 106           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 107                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 108                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 109         { .channels = 8, /* CA_ID 0x0D */
 110           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 111                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 112                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 113         { .channels = 8, /* CA_ID 0x0E */
 114           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 115                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 116                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 117         { .channels = 8, /* CA_ID 0x0F */
 118           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 119                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 120                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 121         { .channels = 8, /* CA_ID 0x10 */
 122           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 123                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 124                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 125         { .channels = 8, /* CA_ID 0x11 */
 126           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 127                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 128                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 129         { .channels = 8, /* CA_ID 0x12 */
 130           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 131                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 132                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 133         { .channels = 8, /* CA_ID 0x13 */
 134           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 135                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 136                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 137         { .channels = 8, /* CA_ID 0x14 */
 138           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 139                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 140                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 141         { .channels = 8, /* CA_ID 0x15 */
 142           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 143                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 144                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 145         { .channels = 8, /* CA_ID 0x16 */
 146           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 147                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 148                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 149         { .channels = 8, /* CA_ID 0x17 */
 150           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 151                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 152                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 153         { .channels = 8, /* CA_ID 0x18 */
 154           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 155                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 156                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 157         { .channels = 8, /* CA_ID 0x19 */
 158           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 159                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 160                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 161         { .channels = 8, /* CA_ID 0x1A */
 162           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 163                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 164                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 165         { .channels = 8, /* CA_ID 0x1B */
 166           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 167                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 168                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 169         { .channels = 8, /* CA_ID 0x1C */
 170           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 171                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 172                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 173         { .channels = 8, /* CA_ID 0x1D */
 174           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 175                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 176                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 177         { .channels = 8, /* CA_ID 0x1E */
 178           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 179                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 180                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 181         { .channels = 8, /* CA_ID 0x1F */
 182           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 183                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 184                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 185         { }
 186 };
 187
 188 /*
 189  * hdmi_codec_channel_alloc: speaker configuration available for CEA
 190  *
 191  * This is an ordered list that must match with hdmi_codec_8ch_chmaps struct
 192  * The preceding ones have better chances to be selected by
 193  * hdmi_codec_get_ch_alloc_table_idx().
 194  */
 195 static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = {
 196         { .ca_id = 0x00, .n_ch = 2,
 197           .mask = FL | FR},
 198         /* 2.1 */
 199         { .ca_id = 0x01, .n_ch = 4,
 200           .mask = FL | FR | LFE},
 201         /* Dolby Surround */
 202         { .ca_id = 0x02, .n_ch = 4,
 203           .mask = FL | FR | FC },
 204         /* surround51 */
 205         { .ca_id = 0x0b, .n_ch = 6,
 206           .mask = FL | FR | LFE | FC | RL | RR},
 207         /* surround40 */
 208         { .ca_id = 0x08, .n_ch = 6,
 209           .mask = FL | FR | RL | RR },
 210         /* surround41 */
 211         { .ca_id = 0x09, .n_ch = 6,
 212           .mask = FL | FR | LFE | RL | RR },
 213         /* surround50 */
 214         { .ca_id = 0x0a, .n_ch = 6,
 215           .mask = FL | FR | FC | RL | RR },
 216         /* 6.1 */
 217         { .ca_id = 0x0f, .n_ch = 8,
 218           .mask = FL | FR | LFE | FC | RL | RR | RC },
 219         /* surround71 */
 220         { .ca_id = 0x13, .n_ch = 8,
 221           .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC },
 222         /* others */
 223         { .ca_id = 0x03, .n_ch = 8,
 224           .mask = FL | FR | LFE | FC },
 225         { .ca_id = 0x04, .n_ch = 8,
 226           .mask = FL | FR | RC},
 227         { .ca_id = 0x05, .n_ch = 8,
 228           .mask = FL | FR | LFE | RC },
 229         { .ca_id = 0x06, .n_ch = 8,
 230           .mask = FL | FR | FC | RC },
 231         { .ca_id = 0x07, .n_ch = 8,
 232           .mask = FL | FR | LFE | FC | RC },
 233         { .ca_id = 0x0c, .n_ch = 8,
 234           .mask = FL | FR | RC | RL | RR },
 235         { .ca_id = 0x0d, .n_ch = 8,
 236           .mask = FL | FR | LFE | RL | RR | RC },
 237         { .ca_id = 0x0e, .n_ch = 8,
 238           .mask = FL | FR | FC | RL | RR | RC },
 239         { .ca_id = 0x10, .n_ch = 8,
 240           .mask = FL | FR | RL | RR | RLC | RRC },
 241         { .ca_id = 0x11, .n_ch = 8,
 242           .mask = FL | FR | LFE | RL | RR | RLC | RRC },
 243         { .ca_id = 0x12, .n_ch = 8,
 244           .mask = FL | FR | FC | RL | RR | RLC | RRC },
 245         { .ca_id = 0x14, .n_ch = 8,
 246           .mask = FL | FR | FLC | FRC },
 247         { .ca_id = 0x15, .n_ch = 8,
 248           .mask = FL | FR | LFE | FLC | FRC },
 249         { .ca_id = 0x16, .n_ch = 8,
 250           .mask = FL | FR | FC | FLC | FRC },
 251         { .ca_id = 0x17, .n_ch = 8,
 252           .mask = FL | FR | LFE | FC | FLC | FRC },
 253         { .ca_id = 0x18, .n_ch = 8,
 254           .mask = FL | FR | RC | FLC | FRC },
 255         { .ca_id = 0x19, .n_ch = 8,
 256           .mask = FL | FR | LFE | RC | FLC | FRC },
 257         { .ca_id = 0x1a, .n_ch = 8,
 258           .mask = FL | FR | RC | FC | FLC | FRC },
 259         { .ca_id = 0x1b, .n_ch = 8,
 260           .mask = FL | FR | LFE | RC | FC | FLC | FRC },
 261         { .ca_id = 0x1c, .n_ch = 8,
 262           .mask = FL | FR | RL | RR | FLC | FRC },
 263         { .ca_id = 0x1d, .n_ch = 8,
 264           .mask = FL | FR | LFE | RL | RR | FLC | FRC },
 265         { .ca_id = 0x1e, .n_ch = 8,
 266           .mask = FL | FR | FC | RL | RR | FLC | FRC },
 267         { .ca_id = 0x1f, .n_ch = 8,
 268           .mask = FL | FR | LFE | FC | RL | RR | FLC | FRC },
 269 };
 270
 271 struct hdmi_codec_priv {
 272         struct hdmi_codec_pdata hcd;
 273         uint8_t eld[MAX_ELD_BYTES];
 274         struct snd_pcm_chmap *chmap_info;
 275         unsigned int chmap_idx;
 276         struct mutex lock;
 277         bool busy;
 278         struct snd_soc_jack *jack;
 279         unsigned int jack_status;
 280         u8 iec_status[5];
 281 };
 282
 283 static const struct snd_soc_dapm_widget hdmi_widgets[] = {
 284         SND_SOC_DAPM_OUTPUT("TX"),
 285         SND_SOC_DAPM_OUTPUT("RX"),
 286 };
 287
 288 enum {
 289         DAI_ID_I2S = 0,
 290         DAI_ID_SPDIF,
 291 };
 292
 293 static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
 294                              struct snd_ctl_elem_info *uinfo)
 295 {
 296         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
 297         uinfo->count = sizeof_field(struct hdmi_codec_priv, eld);
 298
 299         return 0;
 300 }
 301
 302 static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
 303                             struct snd_ctl_elem_value *ucontrol)
 304 {
 305         struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
 306         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 307
 308         memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld));
 309
 310         return 0;
 311 }
 312
 313 static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
 314 {
 315         int i;
 316         static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
 317                 [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
 318                 [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
 319         };
 320         unsigned long spk_mask = 0;
 321
 322         for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) {
 323                 if (spk_alloc & (1 << i))
 324                         spk_mask |= hdmi_codec_eld_spk_alloc_bits[i];
 325         }
 326
 327         return spk_mask;
 328 }
 329
 330 static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
 331 {
 332         u8 spk_alloc;
 333         unsigned long spk_mask;
 334
 335         spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
 336         spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
 337
 338         /* Detect if only stereo supported, else return 8 channels mappings */
 339         if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
 340                 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
 341         else
 342                 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
 343 }
 344
 345 static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
 346                                              unsigned char channels)
 347 {
 348         int i;
 349         u8 spk_alloc;
 350         unsigned long spk_mask;
 351         const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
 352
 353         spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
 354         spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
 355
 356         for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
 357                 /* If spk_alloc == 0, HDMI is unplugged return stereo config*/
 358                 if (!spk_alloc && cap->ca_id == 0)
 359                         return i;
 360                 if (cap->n_ch != channels)
 361                         continue;
 362                 if (!(cap->mask == (spk_mask & cap->mask)))
 363                         continue;
 364                 return i;
 365         }
 366
 367         return -EINVAL;
 368 }
 369 static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
 370                               struct snd_ctl_elem_value *ucontrol)
 371 {
 372         unsigned const char *map;
 373         unsigned int i;
 374         struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
 375         struct hdmi_codec_priv *hcp = info->private_data;
 376
 377         map = info->chmap[hcp->chmap_idx].map;
 378
 379         for (i = 0; i < info->max_channels; i++) {
 380                 if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN)
 381                         ucontrol->value.integer.value[i] = 0;
 382                 else
 383                         ucontrol->value.integer.value[i] = map[i];
 384         }
 385
 386         return 0;
 387 }
 388
 389 static int hdmi_codec_iec958_info(struct snd_kcontrol *kcontrol,
 390                                   struct snd_ctl_elem_info *uinfo)
 391 {
 392         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
 393         uinfo->count = 1;
 394         return 0;
 395 }
 396
 397 static int hdmi_codec_iec958_default_get(struct snd_kcontrol *kcontrol,
 398                                          struct snd_ctl_elem_value *ucontrol)
 399 {
 400         struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
 401         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 402
 403         memcpy(ucontrol->value.iec958.status, hcp->iec_status,
 404                sizeof(hcp->iec_status));
 405
 406         return 0;
 407 }
 408
 409 static int hdmi_codec_iec958_default_put(struct snd_kcontrol *kcontrol,
 410                                          struct snd_ctl_elem_value *ucontrol)
 411 {
 412         struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
 413         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 414
 415         memcpy(hcp->iec_status, ucontrol->value.iec958.status,
 416                sizeof(hcp->iec_status));
 417
 418         return 0;
 419 }
 420
 421 static int hdmi_codec_iec958_mask_get(struct snd_kcontrol *kcontrol,
 422                                       struct snd_ctl_elem_value *ucontrol)
 423 {
 424         memset(ucontrol->value.iec958.status, 0xff,
 425                sizeof_field(struct hdmi_codec_priv, iec_status));
 426
 427         return 0;
 428 }
 429
 430 static int hdmi_codec_startup(struct snd_pcm_substream *substream,
 431                               struct snd_soc_dai *dai)
 432 {
 433         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 434         bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 435         int ret = 0;
 436
 437         mutex_lock(&hcp->lock);
 438         if (hcp->busy) {
 439                 dev_err(dai->dev, "Only one simultaneous stream supported!\n");
 440                 mutex_unlock(&hcp->lock);
 441                 return -EINVAL;
 442         }
 443
 444         if (hcp->hcd.ops->audio_startup) {
 445                 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
 446                 if (ret)
 447                         goto err;
 448         }
 449
 450         if (tx && hcp->hcd.ops->get_eld) {
 451                 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
 452                                             hcp->eld, sizeof(hcp->eld));
 453                 if (ret)
 454                         goto err;
 455
 456                 ret = snd_pcm_hw_constraint_eld(substream->runtime, hcp->eld);
 457                 if (ret)
 458                         goto err;
 459
 460                 /* Select chmap supported */
 461                 hdmi_codec_eld_chmap(hcp);
 462         }
 463
 464         hcp->busy = true;
 465
 466 err:
 467         mutex_unlock(&hcp->lock);
 468         return ret;
 469 }
 470
 471 static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
 472                                 struct snd_soc_dai *dai)
 473 {
 474         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 475
 476         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 477         hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
 478
 479         mutex_lock(&hcp->lock);
 480         hcp->busy = false;
 481         mutex_unlock(&hcp->lock);
 482 }
 483
 484 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
 485                                 struct snd_pcm_hw_params *params,
 486                                 struct snd_soc_dai *dai)
 487 {
 488         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 489         struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
 490         struct hdmi_codec_params hp = {
 491                 .iec = {
 492                         .status = { 0 },
 493                         .subcode = { 0 },
 494                         .pad = 0,
 495                         .dig_subframe = { 0 },
 496                 }
 497         };
 498         int ret, idx;
 499
 500         dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
 501                 params_width(params), params_rate(params),
 502                 params_channels(params));
 503
 504         memcpy(hp.iec.status, hcp->iec_status, sizeof(hp.iec.status));
 505         ret = snd_pcm_fill_iec958_consumer_hw_params(params, hp.iec.status,
 506                                                      sizeof(hp.iec.status));
 507         if (ret < 0) {
 508                 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
 509                         ret);
 510                 return ret;
 511         }
 512
 513         hdmi_audio_infoframe_init(&hp.cea);
 514         hp.cea.channels = params_channels(params);
 515         hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
 516         hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
 517         hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
 518
 519         /* Select a channel allocation that matches with ELD and pcm channels */
 520         idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels);
 521         if (idx < 0) {
 522                 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
 523                         idx);
 524                 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 525                 return idx;
 526         }
 527         hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
 528         hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
 529
 530         hp.sample_width = params_width(params);
 531         hp.sample_rate = params_rate(params);
 532         hp.channels = params_channels(params);
 533
 534         cf->bit_fmt = params_format(params);
 535         return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
 536                                        cf, &hp);
 537 }
 538
 539 static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai,
 540                                   unsigned int fmt)
 541 {
 542         struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
 543
 544         /* Reset daifmt */
 545         memset(cf, 0, sizeof(*cf));
 546
 547         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 548         case SND_SOC_DAIFMT_CBM_CFM:
 549                 cf->bit_clk_master = 1;
 550                 cf->frame_clk_master = 1;
 551                 break;
 552         case SND_SOC_DAIFMT_CBS_CFM:
 553                 cf->frame_clk_master = 1;
 554                 break;
 555         case SND_SOC_DAIFMT_CBM_CFS:
 556                 cf->bit_clk_master = 1;
 557                 break;
 558         case SND_SOC_DAIFMT_CBS_CFS:
 559                 break;
 560         default:
 561                 return -EINVAL;
 562         }
 563
 564         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 565         case SND_SOC_DAIFMT_NB_NF:
 566                 break;
 567         case SND_SOC_DAIFMT_NB_IF:
 568                 cf->frame_clk_inv = 1;
 569                 break;
 570         case SND_SOC_DAIFMT_IB_NF:
 571                 cf->bit_clk_inv = 1;
 572                 break;
 573         case SND_SOC_DAIFMT_IB_IF:
 574                 cf->frame_clk_inv = 1;
 575                 cf->bit_clk_inv = 1;
 576                 break;
 577         }
 578
 579         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 580         case SND_SOC_DAIFMT_I2S:
 581                 cf->fmt = HDMI_I2S;
 582                 break;
 583         case SND_SOC_DAIFMT_DSP_A:
 584                 cf->fmt = HDMI_DSP_A;
 585                 break;
 586         case SND_SOC_DAIFMT_DSP_B:
 587                 cf->fmt = HDMI_DSP_B;
 588                 break;
 589         case SND_SOC_DAIFMT_RIGHT_J:
 590                 cf->fmt = HDMI_RIGHT_J;
 591                 break;
 592         case SND_SOC_DAIFMT_LEFT_J:
 593                 cf->fmt = HDMI_LEFT_J;
 594                 break;
 595         case SND_SOC_DAIFMT_AC97:
 596                 cf->fmt = HDMI_AC97;
 597                 break;
 598         default:
 599                 dev_err(dai->dev, "Invalid DAI interface format\n");
 600                 return -EINVAL;
 601         }
 602
 603         return 0;
 604 }
 605
 606 static int hdmi_codec_mute(struct snd_soc_dai *dai, int mute, int direction)
 607 {
 608         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 609
 610         /*
 611          * ignore if direction was CAPTURE
 612          * and it had .no_capture_mute flag
 613          * see
 614          *      snd_soc_dai_digital_mute()
 615          */
 616         if (hcp->hcd.ops->mute_stream &&
 617             (direction == SNDRV_PCM_STREAM_PLAYBACK ||
 618              !hcp->hcd.ops->no_capture_mute))
 619                 return hcp->hcd.ops->mute_stream(dai->dev->parent,
 620                                                  hcp->hcd.data,
 621                                                  mute, direction);
 622
 623         return -ENOTSUPP;
 624 }
 625
 626 static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = {
 627         .startup        = hdmi_codec_startup,
 628         .shutdown       = hdmi_codec_shutdown,
 629         .hw_params      = hdmi_codec_hw_params,
 630         .set_fmt        = hdmi_codec_i2s_set_fmt,
 631         .mute_stream    = hdmi_codec_mute,
 632 };
 633
 634 static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = {
 635         .startup        = hdmi_codec_startup,
 636         .shutdown       = hdmi_codec_shutdown,
 637         .hw_params      = hdmi_codec_hw_params,
 638         .mute_stream    = hdmi_codec_mute,
 639 };
 640
 641 #define HDMI_RATES      (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
 642                          SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
 643                          SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
 644                          SNDRV_PCM_RATE_192000)
 645
 646 #define SPDIF_FORMATS   (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
 647                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
 648                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
 649                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
 650
 651 /*
 652  * This list is only for formats allowed on the I2S bus. So there is
 653  * some formats listed that are not supported by HDMI interface. For
 654  * instance allowing the 32-bit formats enables 24-precision with CPU
 655  * DAIs that do not support 24-bit formats. If the extra formats cause
 656  * problems, we should add the video side driver an option to disable
 657  * them.
 658  */
 659 #define I2S_FORMATS     (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
 660                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
 661                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
 662                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\
 663                          SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE |\
 664                          SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
 665
 666 struct snd_kcontrol_new hdmi_codec_controls[] = {
 667         {
 668                 .access = SNDRV_CTL_ELEM_ACCESS_READ,
 669                 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
 670                 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
 671                 .info = hdmi_codec_iec958_info,
 672                 .get = hdmi_codec_iec958_mask_get,
 673         },
 674         {
 675                 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
 676                 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
 677                 .info = hdmi_codec_iec958_info,
 678                 .get = hdmi_codec_iec958_default_get,
 679                 .put = hdmi_codec_iec958_default_put,
 680         },
 681         {
 682                 .access = (SNDRV_CTL_ELEM_ACCESS_READ |
 683                            SNDRV_CTL_ELEM_ACCESS_VOLATILE),
 684                 .iface  = SNDRV_CTL_ELEM_IFACE_PCM,
 685                 .name   = "ELD",
 686                 .info   = hdmi_eld_ctl_info,
 687                 .get    = hdmi_eld_ctl_get,
 688         },
 689 };
 690
 691 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
 692                               struct snd_soc_dai *dai)
 693 {
 694         struct snd_soc_dai_driver *drv = dai->driver;
 695         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 696         unsigned int i;
 697         int ret;
 698
 699         ret =  snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
 700                                       NULL, drv->playback.channels_max, 0,
 701                                       &hcp->chmap_info);
 702         if (ret < 0)
 703                 return ret;
 704
 705         /* override handlers */
 706         hcp->chmap_info->private_data = hcp;
 707         hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
 708
 709         /* default chmap supported is stereo */
 710         hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
 711         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 712
 713         for (i = 0; i < ARRAY_SIZE(hdmi_codec_controls); i++) {
 714                 struct snd_kcontrol *kctl;
 715
 716                 /* add ELD ctl with the device number corresponding to the PCM stream */
 717                 kctl = snd_ctl_new1(&hdmi_codec_controls[i], dai->component);
 718                 if (!kctl)
 719                         return -ENOMEM;
 720
 721                 kctl->id.device = rtd->pcm->device;
 722                 ret = snd_ctl_add(rtd->card->snd_card, kctl);
 723                 if (ret < 0)
 724                         return ret;
 725         }
 726
 727         return 0;
 728 }
 729
 730 static int hdmi_dai_probe(struct snd_soc_dai *dai)
 731 {
 732         struct snd_soc_dapm_context *dapm;
 733         struct hdmi_codec_daifmt *daifmt;
 734         struct snd_soc_dapm_route route[] = {
 735                 {
 736                         .sink = "TX",
 737                         .source = dai->driver->playback.stream_name,
 738                 },
 739                 {
 740                         .sink = dai->driver->capture.stream_name,
 741                         .source = "RX",
 742                 },
 743         };
 744         int ret;
 745
 746         dapm = snd_soc_component_get_dapm(dai->component);
 747         ret = snd_soc_dapm_add_routes(dapm, route, 2);
 748         if (ret)
 749                 return ret;
 750
 751         daifmt = kzalloc(sizeof(*daifmt), GFP_KERNEL);
 752         if (!daifmt)
 753                 return -ENOMEM;
 754
 755         dai->playback_dma_data = daifmt;
 756         return 0;
 757 }
 758
 759 static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp,
 760                                    unsigned int jack_status)
 761 {
 762         if (hcp->jack && jack_status != hcp->jack_status) {
 763                 snd_soc_jack_report(hcp->jack, jack_status, SND_JACK_LINEOUT);
 764                 hcp->jack_status = jack_status;
 765         }
 766 }
 767
 768 static void plugged_cb(struct device *dev, bool plugged)
 769 {
 770         struct hdmi_codec_priv *hcp = dev_get_drvdata(dev);
 771
 772         if (plugged) {
 773                 if (hcp->hcd.ops->get_eld) {
 774                         hcp->hcd.ops->get_eld(dev->parent, hcp->hcd.data,
 775                                             hcp->eld, sizeof(hcp->eld));
 776                 }
 777                 hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT);
 778         } else {
 779                 hdmi_codec_jack_report(hcp, 0);
 780                 memset(hcp->eld, 0, sizeof(hcp->eld));
 781         }
 782 }
 783
 784 static int hdmi_codec_set_jack(struct snd_soc_component *component,
 785                                struct snd_soc_jack *jack,
 786                                void *data)
 787 {
 788         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 789         int ret = -ENOTSUPP;
 790
 791         if (hcp->hcd.ops->hook_plugged_cb) {
 792                 hcp->jack = jack;
 793                 ret = hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
 794                                                     hcp->hcd.data,
 795                                                     plugged_cb,
 796                                                     component->dev);
 797                 if (ret)
 798                         hcp->jack = NULL;
 799         }
 800         return ret;
 801 }
 802
 803 static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai)
 804 {
 805         struct hdmi_codec_daifmt *cf;
 806         int ret;
 807
 808         ret = hdmi_dai_probe(dai);
 809         if (ret)
 810                 return ret;
 811
 812         cf = dai->playback_dma_data;
 813         cf->fmt = HDMI_SPDIF;
 814
 815         return 0;
 816 }
 817
 818 static int hdmi_codec_dai_remove(struct snd_soc_dai *dai)
 819 {
 820         kfree(dai->playback_dma_data);
 821         return 0;
 822 }
 823
 824 static const struct snd_soc_dai_driver hdmi_i2s_dai = {
 825         .name = "i2s-hifi",
 826         .id = DAI_ID_I2S,
 827         .probe = hdmi_dai_probe,
 828         .remove = hdmi_codec_dai_remove,
 829         .playback = {
 830                 .stream_name = "I2S Playback",
 831                 .channels_min = 2,
 832                 .channels_max = 8,
 833                 .rates = HDMI_RATES,
 834                 .formats = I2S_FORMATS,
 835                 .sig_bits = 24,
 836         },
 837         .capture = {
 838                 .stream_name = "Capture",
 839                 .channels_min = 2,
 840                 .channels_max = 8,
 841                 .rates = HDMI_RATES,
 842                 .formats = I2S_FORMATS,
 843                 .sig_bits = 24,
 844         },
 845         .ops = &hdmi_codec_i2s_dai_ops,
 846         .pcm_new = hdmi_codec_pcm_new,
 847 };
 848
 849 static const struct snd_soc_dai_driver hdmi_spdif_dai = {
 850         .name = "spdif-hifi",
 851         .id = DAI_ID_SPDIF,
 852         .probe = hdmi_dai_spdif_probe,
 853         .remove = hdmi_codec_dai_remove,
 854         .playback = {
 855                 .stream_name = "SPDIF Playback",
 856                 .channels_min = 2,
 857                 .channels_max = 2,
 858                 .rates = HDMI_RATES,
 859                 .formats = SPDIF_FORMATS,
 860         },
 861         .capture = {
 862                 .stream_name = "Capture",
 863                 .channels_min = 2,
 864                 .channels_max = 2,
 865                 .rates = HDMI_RATES,
 866                 .formats = SPDIF_FORMATS,
 867         },
 868         .ops = &hdmi_codec_spdif_dai_ops,
 869         .pcm_new = hdmi_codec_pcm_new,
 870 };
 871
 872 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
 873                                  struct device_node *endpoint)
 874 {
 875         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 876         int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
 877
 878         if (hcp->hcd.ops->get_dai_id)
 879                 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
 880
 881         return ret;
 882 }
 883
 884 static void hdmi_remove(struct snd_soc_component *component)
 885 {
 886         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 887
 888         if (hcp->hcd.ops->hook_plugged_cb)
 889                 hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
 890                                               hcp->hcd.data, NULL, NULL);
 891 }
 892
 893 static const struct snd_soc_component_driver hdmi_driver = {
 894         .remove                 = hdmi_remove,
 895         .dapm_widgets           = hdmi_widgets,
 896         .num_dapm_widgets       = ARRAY_SIZE(hdmi_widgets),
 897         .of_xlate_dai_id        = hdmi_of_xlate_dai_id,
 898         .idle_bias_on           = 1,
 899         .use_pmdown_time        = 1,
 900         .endianness             = 1,
 901         .non_legacy_dai_naming  = 1,
 902         .set_jack               = hdmi_codec_set_jack,
 903 };
 904
 905 static int hdmi_codec_probe(struct platform_device *pdev)
 906 {
 907         struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
 908         struct snd_soc_dai_driver *daidrv;
 909         struct device *dev = &pdev->dev;
 910         struct hdmi_codec_priv *hcp;
 911         int dai_count, i = 0;
 912         int ret;
 913
 914         if (!hcd) {
 915                 dev_err(dev, "%s: No platform data\n", __func__);
 916                 return -EINVAL;
 917         }
 918
 919         dai_count = hcd->i2s + hcd->spdif;
 920         if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params ||
 921             !hcd->ops->audio_shutdown) {
 922                 dev_err(dev, "%s: Invalid parameters\n", __func__);
 923                 return -EINVAL;
 924         }
 925
 926         hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
 927         if (!hcp)
 928                 return -ENOMEM;
 929
 930         hcp->hcd = *hcd;
 931         mutex_init(&hcp->lock);
 932
 933         ret = snd_pcm_create_iec958_consumer_default(hcp->iec_status,
 934                                                      sizeof(hcp->iec_status));
 935         if (ret < 0)
 936                 return ret;
 937
 938         daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL);
 939         if (!daidrv)
 940                 return -ENOMEM;
 941
 942         if (hcd->i2s) {
 943                 daidrv[i] = hdmi_i2s_dai;
 944                 daidrv[i].playback.channels_max = hcd->max_i2s_channels;
 945                 i++;
 946         }
 947
 948         if (hcd->spdif)
 949                 daidrv[i] = hdmi_spdif_dai;
 950
 951         dev_set_drvdata(dev, hcp);
 952
 953         ret = devm_snd_soc_register_component(dev, &hdmi_driver, daidrv,
 954                                               dai_count);
 955         if (ret) {
 956                 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n",
 957                         __func__, ret);
 958                 return ret;
 959         }
 960         return 0;
 961 }
 962
 963 static struct platform_driver hdmi_codec_driver = {
 964         .driver = {
 965                 .name = HDMI_CODEC_DRV_NAME,
 966         },
 967         .probe = hdmi_codec_probe,
 968 };
 969
 970 module_platform_driver(hdmi_codec_driver);
 971
 972 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
 973 MODULE_DESCRIPTION("HDMI Audio Codec Driver");
 974 MODULE_LICENSE("GPL");
 975 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);