sound/soc/codecs/hdmi-codec.c

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
hdmi_eld_ctl_info
hdmi_eld_ctl_get
hdmi_codec_spk_mask_from_alloc
hdmi_codec_eld_chmap
hdmi_codec_get_ch_alloc_table_idx
hdmi_codec_chmap_ctl_get
hdmi_codec_startup
hdmi_codec_shutdown
hdmi_codec_hw_params
hdmi_codec_i2s_set_fmt
hdmi_codec_digital_mute
hdmi_codec_pcm_new
hdmi_dai_probe
hdmi_codec_jack_report
plugged_cb
hdmi_codec_set_jack_detect
hdmi_dai_spdif_probe
hdmi_codec_dai_remove
hdmi_of_xlate_dai_id
hdmi_codec_probe
   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * ALSA SoC codec for HDMI encoder drivers
   4  * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
   5  * Author: Jyri Sarha <jsarha@ti.com>
   6  */
   7 #include <linux/module.h>
   8 #include <linux/string.h>
   9 #include <sound/core.h>
  10 #include <sound/jack.h>
  11 #include <sound/pcm.h>
  12 #include <sound/pcm_params.h>
  13 #include <sound/soc.h>
  14 #include <sound/tlv.h>
  15 #include <sound/pcm_drm_eld.h>
  16 #include <sound/hdmi-codec.h>
  17 #include <sound/pcm_iec958.h>
  18 
  19 #include <drm/drm_crtc.h> /* This is only to get MAX_ELD_BYTES */
  20 
  21 #define HDMI_CODEC_CHMAP_IDX_UNKNOWN  -1
  22 
  23 struct hdmi_codec_channel_map_table {
  24         unsigned char map;      /* ALSA API channel map position */
  25         unsigned long spk_mask;         /* speaker position bit mask */
  26 };
  27 
  28 /*
  29  * CEA speaker placement for HDMI 1.4:
  30  *
  31  *  FL  FLC   FC   FRC   FR   FRW
  32  *
  33  *                                  LFE
  34  *
  35  *  RL  RLC   RC   RRC   RR
  36  *
  37  *  Speaker placement has to be extended to support HDMI 2.0
  38  */
  39 enum hdmi_codec_cea_spk_placement {
  40         FL  = BIT(0),   /* Front Left           */
  41         FC  = BIT(1),   /* Front Center         */
  42         FR  = BIT(2),   /* Front Right          */
  43         FLC = BIT(3),   /* Front Left Center    */
  44         FRC = BIT(4),   /* Front Right Center   */
  45         RL  = BIT(5),   /* Rear Left            */
  46         RC  = BIT(6),   /* Rear Center          */
  47         RR  = BIT(7),   /* Rear Right           */
  48         RLC = BIT(8),   /* Rear Left Center     */
  49         RRC = BIT(9),   /* Rear Right Center    */
  50         LFE = BIT(10),  /* Low Frequency Effect */
  51 };
  52 
  53 /*
  54  * cea Speaker allocation structure
  55  */
  56 struct hdmi_codec_cea_spk_alloc {
  57         const int ca_id;
  58         unsigned int n_ch;
  59         unsigned long mask;
  60 };
  61 
  62 /* Channel maps  stereo HDMI */
  63 static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = {
  64         { .channels = 2,
  65           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
  66         { }
  67 };
  68 
  69 /* Channel maps for multi-channel playbacks, up to 8 n_ch */
  70 static const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = {
  71         { .channels = 2, /* CA_ID 0x00 */
  72           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
  73         { .channels = 4, /* CA_ID 0x01 */
  74           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  75                    SNDRV_CHMAP_NA } },
  76         { .channels = 4, /* CA_ID 0x02 */
  77           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  78                    SNDRV_CHMAP_FC } },
  79         { .channels = 4, /* CA_ID 0x03 */
  80           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  81                    SNDRV_CHMAP_FC } },
  82         { .channels = 6, /* CA_ID 0x04 */
  83           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  84                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  85         { .channels = 6, /* CA_ID 0x05 */
  86           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  87                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  88         { .channels = 6, /* CA_ID 0x06 */
  89           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  90                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  91         { .channels = 6, /* CA_ID 0x07 */
  92           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  93                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
  94         { .channels = 6, /* CA_ID 0x08 */
  95           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
  96                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
  97         { .channels = 6, /* CA_ID 0x09 */
  98           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
  99                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
 100         { .channels = 6, /* CA_ID 0x0A */
 101           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 102                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
 103         { .channels = 6, /* CA_ID 0x0B */
 104           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 105                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
 106         { .channels = 8, /* CA_ID 0x0C */
 107           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 108                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 109                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 110         { .channels = 8, /* CA_ID 0x0D */
 111           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 112                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 113                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 114         { .channels = 8, /* CA_ID 0x0E */
 115           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 116                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 117                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 118         { .channels = 8, /* CA_ID 0x0F */
 119           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 120                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 121                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 122         { .channels = 8, /* CA_ID 0x10 */
 123           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 124                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 125                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 126         { .channels = 8, /* CA_ID 0x11 */
 127           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 128                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 129                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 130         { .channels = 8, /* CA_ID 0x12 */
 131           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 132                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 133                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 134         { .channels = 8, /* CA_ID 0x13 */
 135           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 136                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
 137                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
 138         { .channels = 8, /* CA_ID 0x14 */
 139           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 140                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 141                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 142         { .channels = 8, /* CA_ID 0x15 */
 143           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 144                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 145                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 146         { .channels = 8, /* CA_ID 0x16 */
 147           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 148                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 149                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 150         { .channels = 8, /* CA_ID 0x17 */
 151           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 152                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 153                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 154         { .channels = 8, /* CA_ID 0x18 */
 155           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 156                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 157                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 158         { .channels = 8, /* CA_ID 0x19 */
 159           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 160                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 161                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 162         { .channels = 8, /* CA_ID 0x1A */
 163           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 164                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 165                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 166         { .channels = 8, /* CA_ID 0x1B */
 167           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 168                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 169                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 170         { .channels = 8, /* CA_ID 0x1C */
 171           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 172                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 173                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 174         { .channels = 8, /* CA_ID 0x1D */
 175           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 176                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 177                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 178         { .channels = 8, /* CA_ID 0x1E */
 179           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 180                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 181                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 182         { .channels = 8, /* CA_ID 0x1F */
 183           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 184                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
 185                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
 186         { }
 187 };
 188 
 189 /*
 190  * hdmi_codec_channel_alloc: speaker configuration available for CEA
 191  *
 192  * This is an ordered list that must match with hdmi_codec_8ch_chmaps struct
 193  * The preceding ones have better chances to be selected by
 194  * hdmi_codec_get_ch_alloc_table_idx().
 195  */
 196 static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = {
 197         { .ca_id = 0x00, .n_ch = 2,
 198           .mask = FL | FR},
 199         /* 2.1 */
 200         { .ca_id = 0x01, .n_ch = 4,
 201           .mask = FL | FR | LFE},
 202         /* Dolby Surround */
 203         { .ca_id = 0x02, .n_ch = 4,
 204           .mask = FL | FR | FC },
 205         /* surround51 */
 206         { .ca_id = 0x0b, .n_ch = 6,
 207           .mask = FL | FR | LFE | FC | RL | RR},
 208         /* surround40 */
 209         { .ca_id = 0x08, .n_ch = 6,
 210           .mask = FL | FR | RL | RR },
 211         /* surround41 */
 212         { .ca_id = 0x09, .n_ch = 6,
 213           .mask = FL | FR | LFE | RL | RR },
 214         /* surround50 */
 215         { .ca_id = 0x0a, .n_ch = 6,
 216           .mask = FL | FR | FC | RL | RR },
 217         /* 6.1 */
 218         { .ca_id = 0x0f, .n_ch = 8,
 219           .mask = FL | FR | LFE | FC | RL | RR | RC },
 220         /* surround71 */
 221         { .ca_id = 0x13, .n_ch = 8,
 222           .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC },
 223         /* others */
 224         { .ca_id = 0x03, .n_ch = 8,
 225           .mask = FL | FR | LFE | FC },
 226         { .ca_id = 0x04, .n_ch = 8,
 227           .mask = FL | FR | RC},
 228         { .ca_id = 0x05, .n_ch = 8,
 229           .mask = FL | FR | LFE | RC },
 230         { .ca_id = 0x06, .n_ch = 8,
 231           .mask = FL | FR | FC | RC },
 232         { .ca_id = 0x07, .n_ch = 8,
 233           .mask = FL | FR | LFE | FC | RC },
 234         { .ca_id = 0x0c, .n_ch = 8,
 235           .mask = FL | FR | RC | RL | RR },
 236         { .ca_id = 0x0d, .n_ch = 8,
 237           .mask = FL | FR | LFE | RL | RR | RC },
 238         { .ca_id = 0x0e, .n_ch = 8,
 239           .mask = FL | FR | FC | RL | RR | RC },
 240         { .ca_id = 0x10, .n_ch = 8,
 241           .mask = FL | FR | RL | RR | RLC | RRC },
 242         { .ca_id = 0x11, .n_ch = 8,
 243           .mask = FL | FR | LFE | RL | RR | RLC | RRC },
 244         { .ca_id = 0x12, .n_ch = 8,
 245           .mask = FL | FR | FC | RL | RR | RLC | RRC },
 246         { .ca_id = 0x14, .n_ch = 8,
 247           .mask = FL | FR | FLC | FRC },
 248         { .ca_id = 0x15, .n_ch = 8,
 249           .mask = FL | FR | LFE | FLC | FRC },
 250         { .ca_id = 0x16, .n_ch = 8,
 251           .mask = FL | FR | FC | FLC | FRC },
 252         { .ca_id = 0x17, .n_ch = 8,
 253           .mask = FL | FR | LFE | FC | FLC | FRC },
 254         { .ca_id = 0x18, .n_ch = 8,
 255           .mask = FL | FR | RC | FLC | FRC },
 256         { .ca_id = 0x19, .n_ch = 8,
 257           .mask = FL | FR | LFE | RC | FLC | FRC },
 258         { .ca_id = 0x1a, .n_ch = 8,
 259           .mask = FL | FR | RC | FC | FLC | FRC },
 260         { .ca_id = 0x1b, .n_ch = 8,
 261           .mask = FL | FR | LFE | RC | FC | FLC | FRC },
 262         { .ca_id = 0x1c, .n_ch = 8,
 263           .mask = FL | FR | RL | RR | FLC | FRC },
 264         { .ca_id = 0x1d, .n_ch = 8,
 265           .mask = FL | FR | LFE | RL | RR | FLC | FRC },
 266         { .ca_id = 0x1e, .n_ch = 8,
 267           .mask = FL | FR | FC | RL | RR | FLC | FRC },
 268         { .ca_id = 0x1f, .n_ch = 8,
 269           .mask = FL | FR | LFE | FC | RL | RR | FLC | FRC },
 270 };
 271 
 272 struct hdmi_codec_priv {
 273         struct hdmi_codec_pdata hcd;
 274         uint8_t eld[MAX_ELD_BYTES];
 275         struct snd_pcm_chmap *chmap_info;
 276         unsigned int chmap_idx;
 277         unsigned long busy;
 278         struct snd_soc_jack *jack;
 279         unsigned int jack_status;
 280 };
 281 
 282 static const struct snd_soc_dapm_widget hdmi_widgets[] = {
 283         SND_SOC_DAPM_OUTPUT("TX"),
 284 };
 285 
 286 enum {
 287         DAI_ID_I2S = 0,
 288         DAI_ID_SPDIF,
 289 };
 290 
 291 static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
 292                              struct snd_ctl_elem_info *uinfo)
 293 {
 294         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
 295         uinfo->count = FIELD_SIZEOF(struct hdmi_codec_priv, eld);
 296 
 297         return 0;
 298 }
 299 
 300 static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
 301                             struct snd_ctl_elem_value *ucontrol)
 302 {
 303         struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
 304         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 305 
 306         memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld));
 307 
 308         return 0;
 309 }
 310 
 311 static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
 312 {
 313         int i;
 314         static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
 315                 [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
 316                 [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
 317         };
 318         unsigned long spk_mask = 0;
 319 
 320         for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) {
 321                 if (spk_alloc & (1 << i))
 322                         spk_mask |= hdmi_codec_eld_spk_alloc_bits[i];
 323         }
 324 
 325         return spk_mask;
 326 }
 327 
 328 static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
 329 {
 330         u8 spk_alloc;
 331         unsigned long spk_mask;
 332 
 333         spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
 334         spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
 335 
 336         /* Detect if only stereo supported, else return 8 channels mappings */
 337         if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
 338                 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
 339         else
 340                 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
 341 }
 342 
 343 static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
 344                                              unsigned char channels)
 345 {
 346         int i;
 347         u8 spk_alloc;
 348         unsigned long spk_mask;
 349         const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
 350 
 351         spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
 352         spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
 353 
 354         for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
 355                 /* If spk_alloc == 0, HDMI is unplugged return stereo config*/
 356                 if (!spk_alloc && cap->ca_id == 0)
 357                         return i;
 358                 if (cap->n_ch != channels)
 359                         continue;
 360                 if (!(cap->mask == (spk_mask & cap->mask)))
 361                         continue;
 362                 return i;
 363         }
 364 
 365         return -EINVAL;
 366 }
 367 static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
 368                               struct snd_ctl_elem_value *ucontrol)
 369 {
 370         unsigned const char *map;
 371         unsigned int i;
 372         struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
 373         struct hdmi_codec_priv *hcp = info->private_data;
 374 
 375         map = info->chmap[hcp->chmap_idx].map;
 376 
 377         for (i = 0; i < info->max_channels; i++) {
 378                 if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN)
 379                         ucontrol->value.integer.value[i] = 0;
 380                 else
 381                         ucontrol->value.integer.value[i] = map[i];
 382         }
 383 
 384         return 0;
 385 }
 386 
 387 static int hdmi_codec_startup(struct snd_pcm_substream *substream,
 388                               struct snd_soc_dai *dai)
 389 {
 390         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 391         int ret = 0;
 392 
 393         ret = test_and_set_bit(0, &hcp->busy);
 394         if (ret) {
 395                 dev_err(dai->dev, "Only one simultaneous stream supported!\n");
 396                 return -EINVAL;
 397         }
 398 
 399         if (hcp->hcd.ops->audio_startup) {
 400                 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
 401                 if (ret)
 402                         goto err;
 403         }
 404 
 405         if (hcp->hcd.ops->get_eld) {
 406                 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
 407                                             hcp->eld, sizeof(hcp->eld));
 408 
 409                 if (!ret) {
 410                         ret = snd_pcm_hw_constraint_eld(substream->runtime,
 411                                                         hcp->eld);
 412                         if (ret)
 413                                 goto err;
 414                 }
 415                 /* Select chmap supported */
 416                 hdmi_codec_eld_chmap(hcp);
 417         }
 418         return 0;
 419 
 420 err:
 421         /* Release the exclusive lock on error */
 422         clear_bit(0, &hcp->busy);
 423         return ret;
 424 }
 425 
 426 static void hdmi_codec_shutdown(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 
 431         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 432         hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
 433 
 434         clear_bit(0, &hcp->busy);
 435 }
 436 
 437 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
 438                                 struct snd_pcm_hw_params *params,
 439                                 struct snd_soc_dai *dai)
 440 {
 441         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 442         struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
 443         struct hdmi_codec_params hp = {
 444                 .iec = {
 445                         .status = { 0 },
 446                         .subcode = { 0 },
 447                         .pad = 0,
 448                         .dig_subframe = { 0 },
 449                 }
 450         };
 451         int ret, idx;
 452 
 453         dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
 454                 params_width(params), params_rate(params),
 455                 params_channels(params));
 456 
 457         ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status,
 458                                                        sizeof(hp.iec.status));
 459         if (ret < 0) {
 460                 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
 461                         ret);
 462                 return ret;
 463         }
 464 
 465         hdmi_audio_infoframe_init(&hp.cea);
 466         hp.cea.channels = params_channels(params);
 467         hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
 468         hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
 469         hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
 470 
 471         /* Select a channel allocation that matches with ELD and pcm channels */
 472         idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels);
 473         if (idx < 0) {
 474                 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
 475                         idx);
 476                 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 477                 return idx;
 478         }
 479         hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
 480         hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
 481 
 482         hp.sample_width = params_width(params);
 483         hp.sample_rate = params_rate(params);
 484         hp.channels = params_channels(params);
 485 
 486         return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
 487                                        cf, &hp);
 488 }
 489 
 490 static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai,
 491                                   unsigned int fmt)
 492 {
 493         struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
 494 
 495         /* Reset daifmt */
 496         memset(cf, 0, sizeof(*cf));
 497 
 498         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 499         case SND_SOC_DAIFMT_CBM_CFM:
 500                 cf->bit_clk_master = 1;
 501                 cf->frame_clk_master = 1;
 502                 break;
 503         case SND_SOC_DAIFMT_CBS_CFM:
 504                 cf->frame_clk_master = 1;
 505                 break;
 506         case SND_SOC_DAIFMT_CBM_CFS:
 507                 cf->bit_clk_master = 1;
 508                 break;
 509         case SND_SOC_DAIFMT_CBS_CFS:
 510                 break;
 511         default:
 512                 return -EINVAL;
 513         }
 514 
 515         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 516         case SND_SOC_DAIFMT_NB_NF:
 517                 break;
 518         case SND_SOC_DAIFMT_NB_IF:
 519                 cf->frame_clk_inv = 1;
 520                 break;
 521         case SND_SOC_DAIFMT_IB_NF:
 522                 cf->bit_clk_inv = 1;
 523                 break;
 524         case SND_SOC_DAIFMT_IB_IF:
 525                 cf->frame_clk_inv = 1;
 526                 cf->bit_clk_inv = 1;
 527                 break;
 528         }
 529 
 530         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 531         case SND_SOC_DAIFMT_I2S:
 532                 cf->fmt = HDMI_I2S;
 533                 break;
 534         case SND_SOC_DAIFMT_DSP_A:
 535                 cf->fmt = HDMI_DSP_A;
 536                 break;
 537         case SND_SOC_DAIFMT_DSP_B:
 538                 cf->fmt = HDMI_DSP_B;
 539                 break;
 540         case SND_SOC_DAIFMT_RIGHT_J:
 541                 cf->fmt = HDMI_RIGHT_J;
 542                 break;
 543         case SND_SOC_DAIFMT_LEFT_J:
 544                 cf->fmt = HDMI_LEFT_J;
 545                 break;
 546         case SND_SOC_DAIFMT_AC97:
 547                 cf->fmt = HDMI_AC97;
 548                 break;
 549         default:
 550                 dev_err(dai->dev, "Invalid DAI interface format\n");
 551                 return -EINVAL;
 552         }
 553 
 554         return 0;
 555 }
 556 
 557 static int hdmi_codec_digital_mute(struct snd_soc_dai *dai, int mute)
 558 {
 559         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 560 
 561         if (hcp->hcd.ops->digital_mute)
 562                 return hcp->hcd.ops->digital_mute(dai->dev->parent,
 563                                                   hcp->hcd.data, mute);
 564 
 565         return 0;
 566 }
 567 
 568 static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = {
 569         .startup        = hdmi_codec_startup,
 570         .shutdown       = hdmi_codec_shutdown,
 571         .hw_params      = hdmi_codec_hw_params,
 572         .set_fmt        = hdmi_codec_i2s_set_fmt,
 573         .digital_mute   = hdmi_codec_digital_mute,
 574 };
 575 
 576 static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = {
 577         .startup        = hdmi_codec_startup,
 578         .shutdown       = hdmi_codec_shutdown,
 579         .hw_params      = hdmi_codec_hw_params,
 580         .digital_mute   = hdmi_codec_digital_mute,
 581 };
 582 
 583 #define HDMI_RATES      (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
 584                          SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
 585                          SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
 586                          SNDRV_PCM_RATE_192000)
 587 
 588 #define SPDIF_FORMATS   (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
 589                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
 590                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
 591                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
 592 
 593 /*
 594  * This list is only for formats allowed on the I2S bus. So there is
 595  * some formats listed that are not supported by HDMI interface. For
 596  * instance allowing the 32-bit formats enables 24-precision with CPU
 597  * DAIs that do not support 24-bit formats. If the extra formats cause
 598  * problems, we should add the video side driver an option to disable
 599  * them.
 600  */
 601 #define I2S_FORMATS     (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
 602                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
 603                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
 604                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\
 605                          SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
 606 
 607 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
 608                               struct snd_soc_dai *dai)
 609 {
 610         struct snd_soc_dai_driver *drv = dai->driver;
 611         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 612         struct snd_kcontrol *kctl;
 613         struct snd_kcontrol_new hdmi_eld_ctl = {
 614                 .access = SNDRV_CTL_ELEM_ACCESS_READ |
 615                           SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 616                 .iface  = SNDRV_CTL_ELEM_IFACE_PCM,
 617                 .name   = "ELD",
 618                 .info   = hdmi_eld_ctl_info,
 619                 .get    = hdmi_eld_ctl_get,
 620                 .device = rtd->pcm->device,
 621         };
 622         int ret;
 623 
 624         ret =  snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
 625                                       NULL, drv->playback.channels_max, 0,
 626                                       &hcp->chmap_info);
 627         if (ret < 0)
 628                 return ret;
 629 
 630         /* override handlers */
 631         hcp->chmap_info->private_data = hcp;
 632         hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
 633 
 634         /* default chmap supported is stereo */
 635         hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
 636         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 637 
 638         /* add ELD ctl with the device number corresponding to the PCM stream */
 639         kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component);
 640         if (!kctl)
 641                 return -ENOMEM;
 642 
 643         return snd_ctl_add(rtd->card->snd_card, kctl);
 644 }
 645 
 646 static int hdmi_dai_probe(struct snd_soc_dai *dai)
 647 {
 648         struct snd_soc_dapm_context *dapm;
 649         struct hdmi_codec_daifmt *daifmt;
 650         struct snd_soc_dapm_route route = {
 651                 .sink = "TX",
 652                 .source = dai->driver->playback.stream_name,
 653         };
 654         int ret;
 655 
 656         dapm = snd_soc_component_get_dapm(dai->component);
 657         ret = snd_soc_dapm_add_routes(dapm, &route, 1);
 658         if (ret)
 659                 return ret;
 660 
 661         daifmt = kzalloc(sizeof(*daifmt), GFP_KERNEL);
 662         if (!daifmt)
 663                 return -ENOMEM;
 664 
 665         dai->playback_dma_data = daifmt;
 666         return 0;
 667 }
 668 
 669 static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp,
 670                                    unsigned int jack_status)
 671 {
 672         if (hcp->jack && jack_status != hcp->jack_status) {
 673                 snd_soc_jack_report(hcp->jack, jack_status, SND_JACK_LINEOUT);
 674                 hcp->jack_status = jack_status;
 675         }
 676 }
 677 
 678 static void plugged_cb(struct device *dev, bool plugged)
 679 {
 680         struct hdmi_codec_priv *hcp = dev_get_drvdata(dev);
 681 
 682         if (plugged)
 683                 hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT);
 684         else
 685                 hdmi_codec_jack_report(hcp, 0);
 686 }
 687 
 688 /**
 689  * hdmi_codec_set_jack_detect - register HDMI plugged callback
 690  * @component: the hdmi-codec instance
 691  * @jack: ASoC jack to report (dis)connection events on
 692  */
 693 int hdmi_codec_set_jack_detect(struct snd_soc_component *component,
 694                                struct snd_soc_jack *jack)
 695 {
 696         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 697         int ret = -EOPNOTSUPP;
 698 
 699         if (hcp->hcd.ops->hook_plugged_cb) {
 700                 hcp->jack = jack;
 701                 ret = hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
 702                                                     hcp->hcd.data,
 703                                                     plugged_cb,
 704                                                     component->dev);
 705                 if (ret)
 706                         hcp->jack = NULL;
 707         }
 708         return ret;
 709 }
 710 EXPORT_SYMBOL_GPL(hdmi_codec_set_jack_detect);
 711 
 712 static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai)
 713 {
 714         struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
 715         int ret;
 716 
 717         ret = hdmi_dai_probe(dai);
 718         if (ret)
 719                 return ret;
 720 
 721         cf = dai->playback_dma_data;
 722         cf->fmt = HDMI_SPDIF;
 723 
 724         return 0;
 725 }
 726 
 727 static int hdmi_codec_dai_remove(struct snd_soc_dai *dai)
 728 {
 729         kfree(dai->playback_dma_data);
 730         return 0;
 731 }
 732 
 733 static const struct snd_soc_dai_driver hdmi_i2s_dai = {
 734         .name = "i2s-hifi",
 735         .id = DAI_ID_I2S,
 736         .probe = hdmi_dai_probe,
 737         .remove = hdmi_codec_dai_remove,
 738         .playback = {
 739                 .stream_name = "I2S Playback",
 740                 .channels_min = 2,
 741                 .channels_max = 8,
 742                 .rates = HDMI_RATES,
 743                 .formats = I2S_FORMATS,
 744                 .sig_bits = 24,
 745         },
 746         .ops = &hdmi_codec_i2s_dai_ops,
 747         .pcm_new = hdmi_codec_pcm_new,
 748 };
 749 
 750 static const struct snd_soc_dai_driver hdmi_spdif_dai = {
 751         .name = "spdif-hifi",
 752         .id = DAI_ID_SPDIF,
 753         .probe = hdmi_dai_spdif_probe,
 754         .remove = hdmi_codec_dai_remove,
 755         .playback = {
 756                 .stream_name = "SPDIF Playback",
 757                 .channels_min = 2,
 758                 .channels_max = 2,
 759                 .rates = HDMI_RATES,
 760                 .formats = SPDIF_FORMATS,
 761         },
 762         .ops = &hdmi_codec_spdif_dai_ops,
 763         .pcm_new = hdmi_codec_pcm_new,
 764 };
 765 
 766 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
 767                                  struct device_node *endpoint)
 768 {
 769         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
 770         int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
 771 
 772         if (hcp->hcd.ops->get_dai_id)
 773                 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
 774 
 775         return ret;
 776 }
 777 
 778 static const struct snd_soc_component_driver hdmi_driver = {
 779         .dapm_widgets           = hdmi_widgets,
 780         .num_dapm_widgets       = ARRAY_SIZE(hdmi_widgets),
 781         .of_xlate_dai_id        = hdmi_of_xlate_dai_id,
 782         .idle_bias_on           = 1,
 783         .use_pmdown_time        = 1,
 784         .endianness             = 1,
 785         .non_legacy_dai_naming  = 1,
 786 };
 787 
 788 static int hdmi_codec_probe(struct platform_device *pdev)
 789 {
 790         struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
 791         struct snd_soc_dai_driver *daidrv;
 792         struct device *dev = &pdev->dev;
 793         struct hdmi_codec_priv *hcp;
 794         int dai_count, i = 0;
 795         int ret;
 796 
 797         if (!hcd) {
 798                 dev_err(dev, "%s: No platform data\n", __func__);
 799                 return -EINVAL;
 800         }
 801 
 802         dai_count = hcd->i2s + hcd->spdif;
 803         if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params ||
 804             !hcd->ops->audio_shutdown) {
 805                 dev_err(dev, "%s: Invalid parameters\n", __func__);
 806                 return -EINVAL;
 807         }
 808 
 809         hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
 810         if (!hcp)
 811                 return -ENOMEM;
 812 
 813         hcp->hcd = *hcd;
 814         daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL);
 815         if (!daidrv)
 816                 return -ENOMEM;
 817 
 818         if (hcd->i2s) {
 819                 daidrv[i] = hdmi_i2s_dai;
 820                 daidrv[i].playback.channels_max = hcd->max_i2s_channels;
 821                 i++;
 822         }
 823 
 824         if (hcd->spdif)
 825                 daidrv[i] = hdmi_spdif_dai;
 826 
 827         dev_set_drvdata(dev, hcp);
 828 
 829         ret = devm_snd_soc_register_component(dev, &hdmi_driver, daidrv,
 830                                               dai_count);
 831         if (ret) {
 832                 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n",
 833                         __func__, ret);
 834                 return ret;
 835         }
 836         return 0;
 837 }
 838 
 839 static struct platform_driver hdmi_codec_driver = {
 840         .driver = {
 841                 .name = HDMI_CODEC_DRV_NAME,
 842         },
 843         .probe = hdmi_codec_probe,
 844 };
 845 
 846 module_platform_driver(hdmi_codec_driver);
 847 
 848 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
 849 MODULE_DESCRIPTION("HDMI Audio Codec Driver");
 850 MODULE_LICENSE("GPL");
 851 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);
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root/sound/soc/codecs/hdmi-codec.c

DEFINITIONS
