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 }; 281 282 static const struct snd_soc_dapm_widget hdmi_widgets[] = { 283 SND_SOC_DAPM_OUTPUT("TX"), 284 SND_SOC_DAPM_OUTPUT("RX"), 285 }; 286 287 enum { 288 DAI_ID_I2S = 0, 289 DAI_ID_SPDIF, 290 }; 291 292 static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol, 293 struct snd_ctl_elem_info *uinfo) 294 { 295 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; 296 uinfo->count = sizeof_field(struct hdmi_codec_priv, eld); 297 298 return 0; 299 } 300 301 static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol, 302 struct snd_ctl_elem_value *ucontrol) 303 { 304 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 305 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); 306 307 memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld)); 308 309 return 0; 310 } 311 312 static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc) 313 { 314 int i; 315 static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = { 316 [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR, 317 [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC, 318 }; 319 unsigned long spk_mask = 0; 320 321 for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) { 322 if (spk_alloc & (1 << i)) 323 spk_mask |= hdmi_codec_eld_spk_alloc_bits[i]; 324 } 325 326 return spk_mask; 327 } 328 329 static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp) 330 { 331 u8 spk_alloc; 332 unsigned long spk_mask; 333 334 spk_alloc = drm_eld_get_spk_alloc(hcp->eld); 335 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc); 336 337 /* Detect if only stereo supported, else return 8 channels mappings */ 338 if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2) 339 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps; 340 else 341 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps; 342 } 343 344 static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp, 345 unsigned char channels) 346 { 347 int i; 348 u8 spk_alloc; 349 unsigned long spk_mask; 350 const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc; 351 352 spk_alloc = drm_eld_get_spk_alloc(hcp->eld); 353 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc); 354 355 for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) { 356 /* If spk_alloc == 0, HDMI is unplugged return stereo config*/ 357 if (!spk_alloc && cap->ca_id == 0) 358 return i; 359 if (cap->n_ch != channels) 360 continue; 361 if (!(cap->mask == (spk_mask & cap->mask))) 362 continue; 363 return i; 364 } 365 366 return -EINVAL; 367 } 368 static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol, 369 struct snd_ctl_elem_value *ucontrol) 370 { 371 unsigned const char *map; 372 unsigned int i; 373 struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol); 374 struct hdmi_codec_priv *hcp = info->private_data; 375 376 map = info->chmap[hcp->chmap_idx].map; 377 378 for (i = 0; i < info->max_channels; i++) { 379 if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN) 380 ucontrol->value.integer.value[i] = 0; 381 else 382 ucontrol->value.integer.value[i] = map[i]; 383 } 384 385 return 0; 386 } 387 388 static int hdmi_codec_startup(struct snd_pcm_substream *substream, 389 struct snd_soc_dai *dai) 390 { 391 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 392 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 393 int ret = 0; 394 395 mutex_lock(&hcp->lock); 396 if (hcp->busy) { 397 dev_err(dai->dev, "Only one simultaneous stream supported!\n"); 398 mutex_unlock(&hcp->lock); 399 return -EINVAL; 400 } 401 402 if (hcp->hcd.ops->audio_startup) { 403 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data); 404 if (ret) 405 goto err; 406 } 407 408 if (tx && hcp->hcd.ops->get_eld) { 409 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data, 410 hcp->eld, sizeof(hcp->eld)); 411 if (ret) 412 goto err; 413 414 ret = snd_pcm_hw_constraint_eld(substream->runtime, hcp->eld); 415 if (ret) 416 goto err; 417 418 /* Select chmap supported */ 419 hdmi_codec_eld_chmap(hcp); 420 } 421 422 hcp->busy = true; 423 424 err: 425 mutex_unlock(&hcp->lock); 426 return ret; 427 } 428 429 static void hdmi_codec_shutdown(struct snd_pcm_substream *substream, 430 struct snd_soc_dai *dai) 431 { 432 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 433 434 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN; 435 hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data); 436 437 mutex_lock(&hcp->lock); 438 hcp->busy = false; 439 mutex_unlock(&hcp->lock); 440 } 441 442 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream, 443 struct snd_pcm_hw_params *params, 444 struct snd_soc_dai *dai) 445 { 446 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 447 struct hdmi_codec_daifmt *cf = dai->playback_dma_data; 448 struct hdmi_codec_params hp = { 449 .iec = { 450 .status = { 0 }, 451 .subcode = { 0 }, 452 .pad = 0, 453 .dig_subframe = { 0 }, 454 } 455 }; 456 int ret, idx; 457 458 dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__, 459 params_width(params), params_rate(params), 460 params_channels(params)); 461 462 ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status, 463 sizeof(hp.iec.status)); 464 if (ret < 0) { 465 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n", 466 ret); 467 return ret; 468 } 469 470 hdmi_audio_infoframe_init(&hp.cea); 471 hp.cea.channels = params_channels(params); 472 hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM; 473 hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM; 474 hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM; 475 476 /* Select a channel allocation that matches with ELD and pcm channels */ 477 idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels); 478 if (idx < 0) { 479 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n", 480 idx); 481 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN; 482 return idx; 483 } 484 hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id; 485 hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id; 486 487 hp.sample_width = params_width(params); 488 hp.sample_rate = params_rate(params); 489 hp.channels = params_channels(params); 490 491 cf->bit_fmt = params_format(params); 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 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE) 622 623 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd, 624 struct snd_soc_dai *dai) 625 { 626 struct snd_soc_dai_driver *drv = dai->driver; 627 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 628 struct snd_kcontrol *kctl; 629 struct snd_kcontrol_new hdmi_eld_ctl = { 630 .access = SNDRV_CTL_ELEM_ACCESS_READ | 631 SNDRV_CTL_ELEM_ACCESS_VOLATILE, 632 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 633 .name = "ELD", 634 .info = hdmi_eld_ctl_info, 635 .get = hdmi_eld_ctl_get, 636 .device = rtd->pcm->device, 637 }; 638 int ret; 639 640 ret = snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK, 641 NULL, drv->playback.channels_max, 0, 642 &hcp->chmap_info); 643 if (ret < 0) 644 return ret; 645 646 /* override handlers */ 647 hcp->chmap_info->private_data = hcp; 648 hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get; 649 650 /* default chmap supported is stereo */ 651 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps; 652 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN; 653 654 /* add ELD ctl with the device number corresponding to the PCM stream */ 655 kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component); 656 if (!kctl) 657 return -ENOMEM; 658 659 return snd_ctl_add(rtd->card->snd_card, kctl); 660 } 661 662 static int hdmi_dai_probe(struct snd_soc_dai *dai) 663 { 664 struct snd_soc_dapm_context *dapm; 665 struct hdmi_codec_daifmt *daifmt; 666 struct snd_soc_dapm_route route[] = { 667 { 668 .sink = "TX", 669 .source = dai->driver->playback.stream_name, 670 }, 671 { 672 .sink = dai->driver->capture.stream_name, 673 .source = "RX", 674 }, 675 }; 676 int ret; 677 678 dapm = snd_soc_component_get_dapm(dai->component); 679 ret = snd_soc_dapm_add_routes(dapm, route, 2); 680 if (ret) 681 return ret; 682 683 daifmt = kzalloc(sizeof(*daifmt), GFP_KERNEL); 684 if (!daifmt) 685 return -ENOMEM; 686 687 dai->playback_dma_data = daifmt; 688 return 0; 689 } 690 691 static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp, 692 unsigned int jack_status) 693 { 694 if (hcp->jack && jack_status != hcp->jack_status) { 695 snd_soc_jack_report(hcp->jack, jack_status, SND_JACK_LINEOUT); 696 hcp->jack_status = jack_status; 697 } 698 } 699 700 static void plugged_cb(struct device *dev, bool plugged) 701 { 702 struct hdmi_codec_priv *hcp = dev_get_drvdata(dev); 703 704 if (plugged) { 705 if (hcp->hcd.ops->get_eld) { 706 hcp->hcd.ops->get_eld(dev->parent, hcp->hcd.data, 707 hcp->eld, sizeof(hcp->eld)); 708 } 709 hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT); 710 } else { 711 hdmi_codec_jack_report(hcp, 0); 712 memset(hcp->eld, 0, sizeof(hcp->eld)); 713 } 714 } 715 716 static int hdmi_codec_set_jack(struct snd_soc_component *component, 717 struct snd_soc_jack *jack, 718 void *data) 719 { 720 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); 721 int ret = -ENOTSUPP; 722 723 if (hcp->hcd.ops->hook_plugged_cb) { 724 hcp->jack = jack; 725 ret = hcp->hcd.ops->hook_plugged_cb(component->dev->parent, 726 hcp->hcd.data, 727 plugged_cb, 728 component->dev); 729 if (ret) 730 hcp->jack = NULL; 731 } 732 return ret; 733 } 734 735 static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai) 736 { 737 struct hdmi_codec_daifmt *cf; 738 int ret; 739 740 ret = hdmi_dai_probe(dai); 741 if (ret) 742 return ret; 743 744 cf = dai->playback_dma_data; 745 cf->fmt = HDMI_SPDIF; 746 747 return 0; 748 } 749 750 static int hdmi_codec_dai_remove(struct snd_soc_dai *dai) 751 { 752 kfree(dai->playback_dma_data); 753 return 0; 754 } 755 756 static const struct snd_soc_dai_driver hdmi_i2s_dai = { 757 .name = "i2s-hifi", 758 .id = DAI_ID_I2S, 759 .probe = hdmi_dai_probe, 760 .remove = hdmi_codec_dai_remove, 761 .playback = { 762 .stream_name = "I2S Playback", 763 .channels_min = 2, 764 .channels_max = 8, 765 .rates = HDMI_RATES, 766 .formats = I2S_FORMATS, 767 .sig_bits = 24, 768 }, 769 .capture = { 770 .stream_name = "Capture", 771 .channels_min = 2, 772 .channels_max = 8, 773 .rates = HDMI_RATES, 774 .formats = I2S_FORMATS, 775 .sig_bits = 24, 776 }, 777 .ops = &hdmi_codec_i2s_dai_ops, 778 .pcm_new = hdmi_codec_pcm_new, 779 }; 780 781 static const struct snd_soc_dai_driver hdmi_spdif_dai = { 782 .name = "spdif-hifi", 783 .id = DAI_ID_SPDIF, 784 .probe = hdmi_dai_spdif_probe, 785 .remove = hdmi_codec_dai_remove, 786 .playback = { 787 .stream_name = "SPDIF Playback", 788 .channels_min = 2, 789 .channels_max = 2, 790 .rates = HDMI_RATES, 791 .formats = SPDIF_FORMATS, 792 }, 793 .capture = { 794 .stream_name = "Capture", 795 .channels_min = 2, 796 .channels_max = 2, 797 .rates = HDMI_RATES, 798 .formats = SPDIF_FORMATS, 799 }, 800 .ops = &hdmi_codec_spdif_dai_ops, 801 .pcm_new = hdmi_codec_pcm_new, 802 }; 803 804 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component, 805 struct device_node *endpoint) 806 { 807 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); 808 int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */ 809 810 if (hcp->hcd.ops->get_dai_id) 811 ret = hcp->hcd.ops->get_dai_id(component, endpoint); 812 813 return ret; 814 } 815 816 static void hdmi_remove(struct snd_soc_component *component) 817 { 818 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); 819 820 if (hcp->hcd.ops->hook_plugged_cb) 821 hcp->hcd.ops->hook_plugged_cb(component->dev->parent, 822 hcp->hcd.data, NULL, NULL); 823 } 824 825 static const struct snd_soc_component_driver hdmi_driver = { 826 .remove = hdmi_remove, 827 .dapm_widgets = hdmi_widgets, 828 .num_dapm_widgets = ARRAY_SIZE(hdmi_widgets), 829 .of_xlate_dai_id = hdmi_of_xlate_dai_id, 830 .idle_bias_on = 1, 831 .use_pmdown_time = 1, 832 .endianness = 1, 833 .non_legacy_dai_naming = 1, 834 .set_jack = hdmi_codec_set_jack, 835 }; 836 837 static int hdmi_codec_probe(struct platform_device *pdev) 838 { 839 struct hdmi_codec_pdata *hcd = pdev->dev.platform_data; 840 struct snd_soc_dai_driver *daidrv; 841 struct device *dev = &pdev->dev; 842 struct hdmi_codec_priv *hcp; 843 int dai_count, i = 0; 844 int ret; 845 846 if (!hcd) { 847 dev_err(dev, "%s: No platform data\n", __func__); 848 return -EINVAL; 849 } 850 851 dai_count = hcd->i2s + hcd->spdif; 852 if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params || 853 !hcd->ops->audio_shutdown) { 854 dev_err(dev, "%s: Invalid parameters\n", __func__); 855 return -EINVAL; 856 } 857 858 hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL); 859 if (!hcp) 860 return -ENOMEM; 861 862 hcp->hcd = *hcd; 863 mutex_init(&hcp->lock); 864 865 daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL); 866 if (!daidrv) 867 return -ENOMEM; 868 869 if (hcd->i2s) { 870 daidrv[i] = hdmi_i2s_dai; 871 daidrv[i].playback.channels_max = hcd->max_i2s_channels; 872 i++; 873 } 874 875 if (hcd->spdif) 876 daidrv[i] = hdmi_spdif_dai; 877 878 dev_set_drvdata(dev, hcp); 879 880 ret = devm_snd_soc_register_component(dev, &hdmi_driver, daidrv, 881 dai_count); 882 if (ret) { 883 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n", 884 __func__, ret); 885 return ret; 886 } 887 return 0; 888 } 889 890 static struct platform_driver hdmi_codec_driver = { 891 .driver = { 892 .name = HDMI_CODEC_DRV_NAME, 893 }, 894 .probe = hdmi_codec_probe, 895 }; 896 897 module_platform_driver(hdmi_codec_driver); 898 899 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>"); 900 MODULE_DESCRIPTION("HDMI Audio Codec Driver"); 901 MODULE_LICENSE("GPL"); 902 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME); 903