1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * ALSA SoC codec for HDMI encoder drivers 4 * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/ 5 * Author: Jyri Sarha <jsarha@ti.com> 6 */ 7 #include <linux/module.h> 8 #include <linux/string.h> 9 #include <sound/core.h> 10 #include <sound/jack.h> 11 #include <sound/pcm.h> 12 #include <sound/pcm_params.h> 13 #include <sound/soc.h> 14 #include <sound/tlv.h> 15 #include <sound/pcm_drm_eld.h> 16 #include <sound/hdmi-codec.h> 17 #include <sound/pcm_iec958.h> 18 19 #include <drm/drm_crtc.h> /* This is only to get MAX_ELD_BYTES */ 20 21 #define HDMI_CODEC_CHMAP_IDX_UNKNOWN -1 22 23 struct hdmi_codec_channel_map_table { 24 unsigned char map; /* ALSA API channel map position */ 25 unsigned long spk_mask; /* speaker position bit mask */ 26 }; 27 28 /* 29 * CEA speaker placement for HDMI 1.4: 30 * 31 * FL FLC FC FRC FR FRW 32 * 33 * LFE 34 * 35 * RL RLC RC RRC RR 36 * 37 * Speaker placement has to be extended to support HDMI 2.0 38 */ 39 enum hdmi_codec_cea_spk_placement { 40 FL = BIT(0), /* Front Left */ 41 FC = BIT(1), /* Front Center */ 42 FR = BIT(2), /* Front Right */ 43 FLC = BIT(3), /* Front Left Center */ 44 FRC = BIT(4), /* Front Right Center */ 45 RL = BIT(5), /* Rear Left */ 46 RC = BIT(6), /* Rear Center */ 47 RR = BIT(7), /* Rear Right */ 48 RLC = BIT(8), /* Rear Left Center */ 49 RRC = BIT(9), /* Rear Right Center */ 50 LFE = BIT(10), /* Low Frequency Effect */ 51 }; 52 53 /* 54 * cea Speaker allocation structure 55 */ 56 struct hdmi_codec_cea_spk_alloc { 57 const int ca_id; 58 unsigned int n_ch; 59 unsigned long mask; 60 }; 61 62 /* Channel maps stereo HDMI */ 63 static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = { 64 { .channels = 2, 65 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } }, 66 { } 67 }; 68 69 /* Channel maps for multi-channel playbacks, up to 8 n_ch */ 70 static const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = { 71 { .channels = 2, /* CA_ID 0x00 */ 72 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } }, 73 { .channels = 4, /* CA_ID 0x01 */ 74 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 75 SNDRV_CHMAP_NA } }, 76 { .channels = 4, /* CA_ID 0x02 */ 77 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 78 SNDRV_CHMAP_FC } }, 79 { .channels = 4, /* CA_ID 0x03 */ 80 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 81 SNDRV_CHMAP_FC } }, 82 { .channels = 6, /* CA_ID 0x04 */ 83 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 84 SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } }, 85 { .channels = 6, /* CA_ID 0x05 */ 86 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 87 SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } }, 88 { .channels = 6, /* CA_ID 0x06 */ 89 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 90 SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } }, 91 { .channels = 6, /* CA_ID 0x07 */ 92 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 93 SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } }, 94 { .channels = 6, /* CA_ID 0x08 */ 95 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 96 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } }, 97 { .channels = 6, /* CA_ID 0x09 */ 98 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 99 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } }, 100 { .channels = 6, /* CA_ID 0x0A */ 101 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 102 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } }, 103 { .channels = 6, /* CA_ID 0x0B */ 104 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 105 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } }, 106 { .channels = 8, /* CA_ID 0x0C */ 107 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 108 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR, 109 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } }, 110 { .channels = 8, /* CA_ID 0x0D */ 111 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 112 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR, 113 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } }, 114 { .channels = 8, /* CA_ID 0x0E */ 115 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 116 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR, 117 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } }, 118 { .channels = 8, /* CA_ID 0x0F */ 119 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 120 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR, 121 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } }, 122 { .channels = 8, /* CA_ID 0x10 */ 123 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 124 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR, 125 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } }, 126 { .channels = 8, /* CA_ID 0x11 */ 127 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 128 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR, 129 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } }, 130 { .channels = 8, /* CA_ID 0x12 */ 131 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 132 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR, 133 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } }, 134 { .channels = 8, /* CA_ID 0x13 */ 135 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 136 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR, 137 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } }, 138 { .channels = 8, /* CA_ID 0x14 */ 139 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 140 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 141 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 142 { .channels = 8, /* CA_ID 0x15 */ 143 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 144 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 145 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 146 { .channels = 8, /* CA_ID 0x16 */ 147 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 148 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 149 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 150 { .channels = 8, /* CA_ID 0x17 */ 151 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 152 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 153 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 154 { .channels = 8, /* CA_ID 0x18 */ 155 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 156 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 157 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 158 { .channels = 8, /* CA_ID 0x19 */ 159 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 160 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 161 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 162 { .channels = 8, /* CA_ID 0x1A */ 163 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 164 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 165 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 166 { .channels = 8, /* CA_ID 0x1B */ 167 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 168 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 169 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 170 { .channels = 8, /* CA_ID 0x1C */ 171 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 172 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 173 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 174 { .channels = 8, /* CA_ID 0x1D */ 175 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 176 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 177 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 178 { .channels = 8, /* CA_ID 0x1E */ 179 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 180 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 181 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 182 { .channels = 8, /* CA_ID 0x1F */ 183 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 184 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 185 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 186 { } 187 }; 188 189 /* 190 * hdmi_codec_channel_alloc: speaker configuration available for CEA 191 * 192 * This is an ordered list that must match with hdmi_codec_8ch_chmaps struct 193 * The preceding ones have better chances to be selected by 194 * hdmi_codec_get_ch_alloc_table_idx(). 195 */ 196 static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = { 197 { .ca_id = 0x00, .n_ch = 2, 198 .mask = FL | FR}, 199 /* 2.1 */ 200 { .ca_id = 0x01, .n_ch = 4, 201 .mask = FL | FR | LFE}, 202 /* Dolby Surround */ 203 { .ca_id = 0x02, .n_ch = 4, 204 .mask = FL | FR | FC }, 205 /* surround51 */ 206 { .ca_id = 0x0b, .n_ch = 6, 207 .mask = FL | FR | LFE | FC | RL | RR}, 208 /* surround40 */ 209 { .ca_id = 0x08, .n_ch = 6, 210 .mask = FL | FR | RL | RR }, 211 /* surround41 */ 212 { .ca_id = 0x09, .n_ch = 6, 213 .mask = FL | FR | LFE | RL | RR }, 214 /* surround50 */ 215 { .ca_id = 0x0a, .n_ch = 6, 216 .mask = FL | FR | FC | RL | RR }, 217 /* 6.1 */ 218 { .ca_id = 0x0f, .n_ch = 8, 219 .mask = FL | FR | LFE | FC | RL | RR | RC }, 220 /* surround71 */ 221 { .ca_id = 0x13, .n_ch = 8, 222 .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC }, 223 /* others */ 224 { .ca_id = 0x03, .n_ch = 8, 225 .mask = FL | FR | LFE | FC }, 226 { .ca_id = 0x04, .n_ch = 8, 227 .mask = FL | FR | RC}, 228 { .ca_id = 0x05, .n_ch = 8, 229 .mask = FL | FR | LFE | RC }, 230 { .ca_id = 0x06, .n_ch = 8, 231 .mask = FL | FR | FC | RC }, 232 { .ca_id = 0x07, .n_ch = 8, 233 .mask = FL | FR | LFE | FC | RC }, 234 { .ca_id = 0x0c, .n_ch = 8, 235 .mask = FL | FR | RC | RL | RR }, 236 { .ca_id = 0x0d, .n_ch = 8, 237 .mask = FL | FR | LFE | RL | RR | RC }, 238 { .ca_id = 0x0e, .n_ch = 8, 239 .mask = FL | FR | FC | RL | RR | RC }, 240 { .ca_id = 0x10, .n_ch = 8, 241 .mask = FL | FR | RL | RR | RLC | RRC }, 242 { .ca_id = 0x11, .n_ch = 8, 243 .mask = FL | FR | LFE | RL | RR | RLC | RRC }, 244 { .ca_id = 0x12, .n_ch = 8, 245 .mask = FL | FR | FC | RL | RR | RLC | RRC }, 246 { .ca_id = 0x14, .n_ch = 8, 247 .mask = FL | FR | FLC | FRC }, 248 { .ca_id = 0x15, .n_ch = 8, 249 .mask = FL | FR | LFE | FLC | FRC }, 250 { .ca_id = 0x16, .n_ch = 8, 251 .mask = FL | FR | FC | FLC | FRC }, 252 { .ca_id = 0x17, .n_ch = 8, 253 .mask = FL | FR | LFE | FC | FLC | FRC }, 254 { .ca_id = 0x18, .n_ch = 8, 255 .mask = FL | FR | RC | FLC | FRC }, 256 { .ca_id = 0x19, .n_ch = 8, 257 .mask = FL | FR | LFE | RC | FLC | FRC }, 258 { .ca_id = 0x1a, .n_ch = 8, 259 .mask = FL | FR | RC | FC | FLC | FRC }, 260 { .ca_id = 0x1b, .n_ch = 8, 261 .mask = FL | FR | LFE | RC | FC | FLC | FRC }, 262 { .ca_id = 0x1c, .n_ch = 8, 263 .mask = FL | FR | RL | RR | FLC | FRC }, 264 { .ca_id = 0x1d, .n_ch = 8, 265 .mask = FL | FR | LFE | RL | RR | FLC | FRC }, 266 { .ca_id = 0x1e, .n_ch = 8, 267 .mask = FL | FR | FC | RL | RR | FLC | FRC }, 268 { .ca_id = 0x1f, .n_ch = 8, 269 .mask = FL | FR | LFE | FC | RL | RR | FLC | FRC }, 270 }; 271 272 struct hdmi_codec_priv { 273 struct hdmi_codec_pdata hcd; 274 uint8_t eld[MAX_ELD_BYTES]; 275 struct snd_pcm_chmap *chmap_info; 276 unsigned int chmap_idx; 277 struct mutex lock; 278 bool busy; 279 struct snd_soc_jack *jack; 280 unsigned int jack_status; 281 }; 282 283 static const struct snd_soc_dapm_widget hdmi_widgets[] = { 284 SND_SOC_DAPM_OUTPUT("TX"), 285 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_startup(struct snd_pcm_substream *substream, 390 struct snd_soc_dai *dai) 391 { 392 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 393 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 394 int ret = 0; 395 396 mutex_lock(&hcp->lock); 397 if (hcp->busy) { 398 dev_err(dai->dev, "Only one simultaneous stream supported!\n"); 399 mutex_unlock(&hcp->lock); 400 return -EINVAL; 401 } 402 403 if (hcp->hcd.ops->audio_startup) { 404 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data); 405 if (ret) 406 goto err; 407 } 408 409 if (tx && hcp->hcd.ops->get_eld) { 410 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data, 411 hcp->eld, sizeof(hcp->eld)); 412 if (ret) 413 goto err; 414 415 ret = snd_pcm_hw_constraint_eld(substream->runtime, hcp->eld); 416 if (ret) 417 goto err; 418 419 /* Select chmap supported */ 420 hdmi_codec_eld_chmap(hcp); 421 } 422 423 hcp->busy = true; 424 425 err: 426 mutex_unlock(&hcp->lock); 427 return ret; 428 } 429 430 static void hdmi_codec_shutdown(struct snd_pcm_substream *substream, 431 struct snd_soc_dai *dai) 432 { 433 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 434 435 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN; 436 hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data); 437 438 mutex_lock(&hcp->lock); 439 hcp->busy = false; 440 mutex_unlock(&hcp->lock); 441 } 442 443 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream, 444 struct snd_pcm_hw_params *params, 445 struct snd_soc_dai *dai) 446 { 447 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 448 struct hdmi_codec_daifmt *cf = dai->playback_dma_data; 449 struct hdmi_codec_params hp = { 450 .iec = { 451 .status = { 0 }, 452 .subcode = { 0 }, 453 .pad = 0, 454 .dig_subframe = { 0 }, 455 } 456 }; 457 int ret, idx; 458 459 dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__, 460 params_width(params), params_rate(params), 461 params_channels(params)); 462 463 ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status, 464 sizeof(hp.iec.status)); 465 if (ret < 0) { 466 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n", 467 ret); 468 return ret; 469 } 470 471 hdmi_audio_infoframe_init(&hp.cea); 472 hp.cea.channels = params_channels(params); 473 hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM; 474 hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM; 475 hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM; 476 477 /* Select a channel allocation that matches with ELD and pcm channels */ 478 idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels); 479 if (idx < 0) { 480 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n", 481 idx); 482 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN; 483 return idx; 484 } 485 hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id; 486 hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id; 487 488 hp.sample_width = params_width(params); 489 hp.sample_rate = params_rate(params); 490 hp.channels = params_channels(params); 491 492 return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data, 493 cf, &hp); 494 } 495 496 static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai, 497 unsigned int fmt) 498 { 499 struct hdmi_codec_daifmt *cf = dai->playback_dma_data; 500 501 /* Reset daifmt */ 502 memset(cf, 0, sizeof(*cf)); 503 504 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 505 case SND_SOC_DAIFMT_CBM_CFM: 506 cf->bit_clk_master = 1; 507 cf->frame_clk_master = 1; 508 break; 509 case SND_SOC_DAIFMT_CBS_CFM: 510 cf->frame_clk_master = 1; 511 break; 512 case SND_SOC_DAIFMT_CBM_CFS: 513 cf->bit_clk_master = 1; 514 break; 515 case SND_SOC_DAIFMT_CBS_CFS: 516 break; 517 default: 518 return -EINVAL; 519 } 520 521 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 522 case SND_SOC_DAIFMT_NB_NF: 523 break; 524 case SND_SOC_DAIFMT_NB_IF: 525 cf->frame_clk_inv = 1; 526 break; 527 case SND_SOC_DAIFMT_IB_NF: 528 cf->bit_clk_inv = 1; 529 break; 530 case SND_SOC_DAIFMT_IB_IF: 531 cf->frame_clk_inv = 1; 532 cf->bit_clk_inv = 1; 533 break; 534 } 535 536 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 537 case SND_SOC_DAIFMT_I2S: 538 cf->fmt = HDMI_I2S; 539 break; 540 case SND_SOC_DAIFMT_DSP_A: 541 cf->fmt = HDMI_DSP_A; 542 break; 543 case SND_SOC_DAIFMT_DSP_B: 544 cf->fmt = HDMI_DSP_B; 545 break; 546 case SND_SOC_DAIFMT_RIGHT_J: 547 cf->fmt = HDMI_RIGHT_J; 548 break; 549 case SND_SOC_DAIFMT_LEFT_J: 550 cf->fmt = HDMI_LEFT_J; 551 break; 552 case SND_SOC_DAIFMT_AC97: 553 cf->fmt = HDMI_AC97; 554 break; 555 default: 556 dev_err(dai->dev, "Invalid DAI interface format\n"); 557 return -EINVAL; 558 } 559 560 return 0; 561 } 562 563 static int hdmi_codec_mute(struct snd_soc_dai *dai, int mute, int direction) 564 { 565 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 566 567 /* 568 * ignore if direction was CAPTURE 569 * and it had .no_capture_mute flag 570 * see 571 * snd_soc_dai_digital_mute() 572 */ 573 if (hcp->hcd.ops->mute_stream && 574 (direction == SNDRV_PCM_STREAM_PLAYBACK || 575 !hcp->hcd.ops->no_capture_mute)) 576 return hcp->hcd.ops->mute_stream(dai->dev->parent, 577 hcp->hcd.data, 578 mute, direction); 579 580 return -ENOTSUPP; 581 } 582 583 static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = { 584 .startup = hdmi_codec_startup, 585 .shutdown = hdmi_codec_shutdown, 586 .hw_params = hdmi_codec_hw_params, 587 .set_fmt = hdmi_codec_i2s_set_fmt, 588 .mute_stream = hdmi_codec_mute, 589 }; 590 591 static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = { 592 .startup = hdmi_codec_startup, 593 .shutdown = hdmi_codec_shutdown, 594 .hw_params = hdmi_codec_hw_params, 595 .mute_stream = hdmi_codec_mute, 596 }; 597 598 #define HDMI_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ 599 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\ 600 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\ 601 SNDRV_PCM_RATE_192000) 602 603 #define SPDIF_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\ 604 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\ 605 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\ 606 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE) 607 608 /* 609 * This list is only for formats allowed on the I2S bus. So there is 610 * some formats listed that are not supported by HDMI interface. For 611 * instance allowing the 32-bit formats enables 24-precision with CPU 612 * DAIs that do not support 24-bit formats. If the extra formats cause 613 * problems, we should add the video side driver an option to disable 614 * them. 615 */ 616 #define I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\ 617 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\ 618 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\ 619 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\ 620 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE) 621 622 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd, 623 struct snd_soc_dai *dai) 624 { 625 struct snd_soc_dai_driver *drv = dai->driver; 626 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 627 struct snd_kcontrol *kctl; 628 struct snd_kcontrol_new hdmi_eld_ctl = { 629 .access = SNDRV_CTL_ELEM_ACCESS_READ | 630 SNDRV_CTL_ELEM_ACCESS_VOLATILE, 631 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 632 .name = "ELD", 633 .info = hdmi_eld_ctl_info, 634 .get = hdmi_eld_ctl_get, 635 .device = rtd->pcm->device, 636 }; 637 int ret; 638 639 ret = snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK, 640 NULL, drv->playback.channels_max, 0, 641 &hcp->chmap_info); 642 if (ret < 0) 643 return ret; 644 645 /* override handlers */ 646 hcp->chmap_info->private_data = hcp; 647 hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get; 648 649 /* default chmap supported is stereo */ 650 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps; 651 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN; 652 653 /* add ELD ctl with the device number corresponding to the PCM stream */ 654 kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component); 655 if (!kctl) 656 return -ENOMEM; 657 658 return snd_ctl_add(rtd->card->snd_card, kctl); 659 } 660 661 static int hdmi_dai_probe(struct snd_soc_dai *dai) 662 { 663 struct snd_soc_dapm_context *dapm; 664 struct hdmi_codec_daifmt *daifmt; 665 struct snd_soc_dapm_route route[] = { 666 { 667 .sink = "TX", 668 .source = dai->driver->playback.stream_name, 669 }, 670 { 671 .sink = dai->driver->capture.stream_name, 672 .source = "RX", 673 }, 674 }; 675 int ret; 676 677 dapm = snd_soc_component_get_dapm(dai->component); 678 ret = snd_soc_dapm_add_routes(dapm, route, 2); 679 if (ret) 680 return ret; 681 682 daifmt = kzalloc(sizeof(*daifmt), GFP_KERNEL); 683 if (!daifmt) 684 return -ENOMEM; 685 686 dai->playback_dma_data = daifmt; 687 return 0; 688 } 689 690 static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp, 691 unsigned int jack_status) 692 { 693 if (hcp->jack && jack_status != hcp->jack_status) { 694 snd_soc_jack_report(hcp->jack, jack_status, SND_JACK_LINEOUT); 695 hcp->jack_status = jack_status; 696 } 697 } 698 699 static void plugged_cb(struct device *dev, bool plugged) 700 { 701 struct hdmi_codec_priv *hcp = dev_get_drvdata(dev); 702 703 if (plugged) { 704 if (hcp->hcd.ops->get_eld) { 705 hcp->hcd.ops->get_eld(dev->parent, hcp->hcd.data, 706 hcp->eld, sizeof(hcp->eld)); 707 } 708 hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT); 709 } else { 710 hdmi_codec_jack_report(hcp, 0); 711 memset(hcp->eld, 0, sizeof(hcp->eld)); 712 } 713 } 714 715 static int hdmi_codec_set_jack(struct snd_soc_component *component, 716 struct snd_soc_jack *jack, 717 void *data) 718 { 719 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); 720 int ret = -EOPNOTSUPP; 721 722 if (hcp->hcd.ops->hook_plugged_cb) { 723 hcp->jack = jack; 724 ret = hcp->hcd.ops->hook_plugged_cb(component->dev->parent, 725 hcp->hcd.data, 726 plugged_cb, 727 component->dev); 728 if (ret) 729 hcp->jack = NULL; 730 } 731 return ret; 732 } 733 734 static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai) 735 { 736 struct hdmi_codec_daifmt *cf = dai->playback_dma_data; 737 int ret; 738 739 ret = hdmi_dai_probe(dai); 740 if (ret) 741 return ret; 742 743 cf = dai->playback_dma_data; 744 cf->fmt = HDMI_SPDIF; 745 746 return 0; 747 } 748 749 static int hdmi_codec_dai_remove(struct snd_soc_dai *dai) 750 { 751 kfree(dai->playback_dma_data); 752 return 0; 753 } 754 755 static const struct snd_soc_dai_driver hdmi_i2s_dai = { 756 .name = "i2s-hifi", 757 .id = DAI_ID_I2S, 758 .probe = hdmi_dai_probe, 759 .remove = hdmi_codec_dai_remove, 760 .playback = { 761 .stream_name = "I2S Playback", 762 .channels_min = 2, 763 .channels_max = 8, 764 .rates = HDMI_RATES, 765 .formats = I2S_FORMATS, 766 .sig_bits = 24, 767 }, 768 .capture = { 769 .stream_name = "Capture", 770 .channels_min = 2, 771 .channels_max = 8, 772 .rates = HDMI_RATES, 773 .formats = I2S_FORMATS, 774 .sig_bits = 24, 775 }, 776 .ops = &hdmi_codec_i2s_dai_ops, 777 .pcm_new = hdmi_codec_pcm_new, 778 }; 779 780 static const struct snd_soc_dai_driver hdmi_spdif_dai = { 781 .name = "spdif-hifi", 782 .id = DAI_ID_SPDIF, 783 .probe = hdmi_dai_spdif_probe, 784 .remove = hdmi_codec_dai_remove, 785 .playback = { 786 .stream_name = "SPDIF Playback", 787 .channels_min = 2, 788 .channels_max = 2, 789 .rates = HDMI_RATES, 790 .formats = SPDIF_FORMATS, 791 }, 792 .capture = { 793 .stream_name = "Capture", 794 .channels_min = 2, 795 .channels_max = 2, 796 .rates = HDMI_RATES, 797 .formats = SPDIF_FORMATS, 798 }, 799 .ops = &hdmi_codec_spdif_dai_ops, 800 .pcm_new = hdmi_codec_pcm_new, 801 }; 802 803 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component, 804 struct device_node *endpoint) 805 { 806 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); 807 int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */ 808 809 if (hcp->hcd.ops->get_dai_id) 810 ret = hcp->hcd.ops->get_dai_id(component, endpoint); 811 812 return ret; 813 } 814 815 static void hdmi_remove(struct snd_soc_component *component) 816 { 817 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); 818 819 if (hcp->hcd.ops->hook_plugged_cb) 820 hcp->hcd.ops->hook_plugged_cb(component->dev->parent, 821 hcp->hcd.data, NULL, NULL); 822 } 823 824 static const struct snd_soc_component_driver hdmi_driver = { 825 .remove = hdmi_remove, 826 .dapm_widgets = hdmi_widgets, 827 .num_dapm_widgets = ARRAY_SIZE(hdmi_widgets), 828 .of_xlate_dai_id = hdmi_of_xlate_dai_id, 829 .idle_bias_on = 1, 830 .use_pmdown_time = 1, 831 .endianness = 1, 832 .non_legacy_dai_naming = 1, 833 .set_jack = hdmi_codec_set_jack, 834 }; 835 836 static int hdmi_codec_probe(struct platform_device *pdev) 837 { 838 struct hdmi_codec_pdata *hcd = pdev->dev.platform_data; 839 struct snd_soc_dai_driver *daidrv; 840 struct device *dev = &pdev->dev; 841 struct hdmi_codec_priv *hcp; 842 int dai_count, i = 0; 843 int ret; 844 845 if (!hcd) { 846 dev_err(dev, "%s: No platform data\n", __func__); 847 return -EINVAL; 848 } 849 850 dai_count = hcd->i2s + hcd->spdif; 851 if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params || 852 !hcd->ops->audio_shutdown) { 853 dev_err(dev, "%s: Invalid parameters\n", __func__); 854 return -EINVAL; 855 } 856 857 hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL); 858 if (!hcp) 859 return -ENOMEM; 860 861 hcp->hcd = *hcd; 862 mutex_init(&hcp->lock); 863 864 daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL); 865 if (!daidrv) 866 return -ENOMEM; 867 868 if (hcd->i2s) { 869 daidrv[i] = hdmi_i2s_dai; 870 daidrv[i].playback.channels_max = hcd->max_i2s_channels; 871 i++; 872 } 873 874 if (hcd->spdif) 875 daidrv[i] = hdmi_spdif_dai; 876 877 dev_set_drvdata(dev, hcp); 878 879 ret = devm_snd_soc_register_component(dev, &hdmi_driver, daidrv, 880 dai_count); 881 if (ret) { 882 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n", 883 __func__, ret); 884 return ret; 885 } 886 return 0; 887 } 888 889 static struct platform_driver hdmi_codec_driver = { 890 .driver = { 891 .name = HDMI_CODEC_DRV_NAME, 892 }, 893 .probe = hdmi_codec_probe, 894 }; 895 896 module_platform_driver(hdmi_codec_driver); 897 898 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>"); 899 MODULE_DESCRIPTION("HDMI Audio Codec Driver"); 900 MODULE_LICENSE("GPL"); 901 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME); 902