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 }; 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 int ret = 0; 393 394 mutex_lock(&hcp->lock); 395 if (hcp->busy) { 396 dev_err(dai->dev, "Only one simultaneous stream supported!\n"); 397 mutex_unlock(&hcp->lock); 398 return -EINVAL; 399 } 400 401 if (hcp->hcd.ops->audio_startup) { 402 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data); 403 if (ret) 404 goto err; 405 } 406 407 if (hcp->hcd.ops->get_eld) { 408 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data, 409 hcp->eld, sizeof(hcp->eld)); 410 if (ret) 411 goto err; 412 413 ret = snd_pcm_hw_constraint_eld(substream->runtime, hcp->eld); 414 if (ret) 415 goto err; 416 417 /* Select chmap supported */ 418 hdmi_codec_eld_chmap(hcp); 419 } 420 421 hcp->busy = true; 422 423 err: 424 mutex_unlock(&hcp->lock); 425 return ret; 426 } 427 428 static void hdmi_codec_shutdown(struct snd_pcm_substream *substream, 429 struct snd_soc_dai *dai) 430 { 431 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 432 433 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN; 434 hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data); 435 436 mutex_lock(&hcp->lock); 437 hcp->busy = false; 438 mutex_unlock(&hcp->lock); 439 } 440 441 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream, 442 struct snd_pcm_hw_params *params, 443 struct snd_soc_dai *dai) 444 { 445 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 446 struct hdmi_codec_daifmt *cf = dai->playback_dma_data; 447 struct hdmi_codec_params hp = { 448 .iec = { 449 .status = { 0 }, 450 .subcode = { 0 }, 451 .pad = 0, 452 .dig_subframe = { 0 }, 453 } 454 }; 455 int ret, idx; 456 457 dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__, 458 params_width(params), params_rate(params), 459 params_channels(params)); 460 461 ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status, 462 sizeof(hp.iec.status)); 463 if (ret < 0) { 464 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n", 465 ret); 466 return ret; 467 } 468 469 hdmi_audio_infoframe_init(&hp.cea); 470 hp.cea.channels = params_channels(params); 471 hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM; 472 hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM; 473 hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM; 474 475 /* Select a channel allocation that matches with ELD and pcm channels */ 476 idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels); 477 if (idx < 0) { 478 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n", 479 idx); 480 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN; 481 return idx; 482 } 483 hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id; 484 hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id; 485 486 hp.sample_width = params_width(params); 487 hp.sample_rate = params_rate(params); 488 hp.channels = params_channels(params); 489 490 return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data, 491 cf, &hp); 492 } 493 494 static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai, 495 unsigned int fmt) 496 { 497 struct hdmi_codec_daifmt *cf = dai->playback_dma_data; 498 499 /* Reset daifmt */ 500 memset(cf, 0, sizeof(*cf)); 501 502 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 503 case SND_SOC_DAIFMT_CBM_CFM: 504 cf->bit_clk_master = 1; 505 cf->frame_clk_master = 1; 506 break; 507 case SND_SOC_DAIFMT_CBS_CFM: 508 cf->frame_clk_master = 1; 509 break; 510 case SND_SOC_DAIFMT_CBM_CFS: 511 cf->bit_clk_master = 1; 512 break; 513 case SND_SOC_DAIFMT_CBS_CFS: 514 break; 515 default: 516 return -EINVAL; 517 } 518 519 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 520 case SND_SOC_DAIFMT_NB_NF: 521 break; 522 case SND_SOC_DAIFMT_NB_IF: 523 cf->frame_clk_inv = 1; 524 break; 525 case SND_SOC_DAIFMT_IB_NF: 526 cf->bit_clk_inv = 1; 527 break; 528 case SND_SOC_DAIFMT_IB_IF: 529 cf->frame_clk_inv = 1; 530 cf->bit_clk_inv = 1; 531 break; 532 } 533 534 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 535 case SND_SOC_DAIFMT_I2S: 536 cf->fmt = HDMI_I2S; 537 break; 538 case SND_SOC_DAIFMT_DSP_A: 539 cf->fmt = HDMI_DSP_A; 540 break; 541 case SND_SOC_DAIFMT_DSP_B: 542 cf->fmt = HDMI_DSP_B; 543 break; 544 case SND_SOC_DAIFMT_RIGHT_J: 545 cf->fmt = HDMI_RIGHT_J; 546 break; 547 case SND_SOC_DAIFMT_LEFT_J: 548 cf->fmt = HDMI_LEFT_J; 549 break; 550 case SND_SOC_DAIFMT_AC97: 551 cf->fmt = HDMI_AC97; 552 break; 553 default: 554 dev_err(dai->dev, "Invalid DAI interface format\n"); 555 return -EINVAL; 556 } 557 558 return 0; 559 } 560 561 static int hdmi_codec_mute(struct snd_soc_dai *dai, int mute, int direction) 562 { 563 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 564 565 /* 566 * ignore if direction was CAPTURE 567 * and it had .no_capture_mute flag 568 * see 569 * snd_soc_dai_digital_mute() 570 */ 571 if (hcp->hcd.ops->mute_stream && 572 (direction == SNDRV_PCM_STREAM_PLAYBACK || 573 !hcp->hcd.ops->no_capture_mute)) 574 return hcp->hcd.ops->mute_stream(dai->dev->parent, 575 hcp->hcd.data, 576 mute, direction); 577 578 return -ENOTSUPP; 579 } 580 581 static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = { 582 .startup = hdmi_codec_startup, 583 .shutdown = hdmi_codec_shutdown, 584 .hw_params = hdmi_codec_hw_params, 585 .set_fmt = hdmi_codec_i2s_set_fmt, 586 .mute_stream = hdmi_codec_mute, 587 }; 588 589 static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = { 590 .startup = hdmi_codec_startup, 591 .shutdown = hdmi_codec_shutdown, 592 .hw_params = hdmi_codec_hw_params, 593 .mute_stream = hdmi_codec_mute, 594 }; 595 596 #define HDMI_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ 597 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\ 598 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\ 599 SNDRV_PCM_RATE_192000) 600 601 #define SPDIF_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) 605 606 /* 607 * This list is only for formats allowed on the I2S bus. So there is 608 * some formats listed that are not supported by HDMI interface. For 609 * instance allowing the 32-bit formats enables 24-precision with CPU 610 * DAIs that do not support 24-bit formats. If the extra formats cause 611 * problems, we should add the video side driver an option to disable 612 * them. 613 */ 614 #define I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\ 615 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\ 616 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\ 617 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\ 618 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE) 619 620 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd, 621 struct snd_soc_dai *dai) 622 { 623 struct snd_soc_dai_driver *drv = dai->driver; 624 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 625 struct snd_kcontrol *kctl; 626 struct snd_kcontrol_new hdmi_eld_ctl = { 627 .access = SNDRV_CTL_ELEM_ACCESS_READ | 628 SNDRV_CTL_ELEM_ACCESS_VOLATILE, 629 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 630 .name = "ELD", 631 .info = hdmi_eld_ctl_info, 632 .get = hdmi_eld_ctl_get, 633 .device = rtd->pcm->device, 634 }; 635 int ret; 636 637 ret = snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK, 638 NULL, drv->playback.channels_max, 0, 639 &hcp->chmap_info); 640 if (ret < 0) 641 return ret; 642 643 /* override handlers */ 644 hcp->chmap_info->private_data = hcp; 645 hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get; 646 647 /* default chmap supported is stereo */ 648 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps; 649 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN; 650 651 /* add ELD ctl with the device number corresponding to the PCM stream */ 652 kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component); 653 if (!kctl) 654 return -ENOMEM; 655 656 return snd_ctl_add(rtd->card->snd_card, kctl); 657 } 658 659 static int hdmi_dai_probe(struct snd_soc_dai *dai) 660 { 661 struct snd_soc_dapm_context *dapm; 662 struct hdmi_codec_daifmt *daifmt; 663 struct snd_soc_dapm_route route = { 664 .sink = "TX", 665 .source = dai->driver->playback.stream_name, 666 }; 667 int ret; 668 669 dapm = snd_soc_component_get_dapm(dai->component); 670 ret = snd_soc_dapm_add_routes(dapm, &route, 1); 671 if (ret) 672 return ret; 673 674 daifmt = kzalloc(sizeof(*daifmt), GFP_KERNEL); 675 if (!daifmt) 676 return -ENOMEM; 677 678 dai->playback_dma_data = daifmt; 679 return 0; 680 } 681 682 static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp, 683 unsigned int jack_status) 684 { 685 if (hcp->jack && jack_status != hcp->jack_status) { 686 snd_soc_jack_report(hcp->jack, jack_status, SND_JACK_LINEOUT); 687 hcp->jack_status = jack_status; 688 } 689 } 690 691 static void plugged_cb(struct device *dev, bool plugged) 692 { 693 struct hdmi_codec_priv *hcp = dev_get_drvdata(dev); 694 695 if (plugged) 696 hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT); 697 else 698 hdmi_codec_jack_report(hcp, 0); 699 } 700 701 /** 702 * hdmi_codec_set_jack_detect - register HDMI plugged callback 703 * @component: the hdmi-codec instance 704 * @jack: ASoC jack to report (dis)connection events on 705 */ 706 int hdmi_codec_set_jack_detect(struct snd_soc_component *component, 707 struct snd_soc_jack *jack) 708 { 709 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); 710 int ret = -EOPNOTSUPP; 711 712 if (hcp->hcd.ops->hook_plugged_cb) { 713 hcp->jack = jack; 714 ret = hcp->hcd.ops->hook_plugged_cb(component->dev->parent, 715 hcp->hcd.data, 716 plugged_cb, 717 component->dev); 718 if (ret) 719 hcp->jack = NULL; 720 } 721 return ret; 722 } 723 EXPORT_SYMBOL_GPL(hdmi_codec_set_jack_detect); 724 725 static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai) 726 { 727 struct hdmi_codec_daifmt *cf = dai->playback_dma_data; 728 int ret; 729 730 ret = hdmi_dai_probe(dai); 731 if (ret) 732 return ret; 733 734 cf = dai->playback_dma_data; 735 cf->fmt = HDMI_SPDIF; 736 737 return 0; 738 } 739 740 static int hdmi_codec_dai_remove(struct snd_soc_dai *dai) 741 { 742 kfree(dai->playback_dma_data); 743 return 0; 744 } 745 746 static const struct snd_soc_dai_driver hdmi_i2s_dai = { 747 .name = "i2s-hifi", 748 .id = DAI_ID_I2S, 749 .probe = hdmi_dai_probe, 750 .remove = hdmi_codec_dai_remove, 751 .playback = { 752 .stream_name = "I2S Playback", 753 .channels_min = 2, 754 .channels_max = 8, 755 .rates = HDMI_RATES, 756 .formats = I2S_FORMATS, 757 .sig_bits = 24, 758 }, 759 .ops = &hdmi_codec_i2s_dai_ops, 760 .pcm_new = hdmi_codec_pcm_new, 761 }; 762 763 static const struct snd_soc_dai_driver hdmi_spdif_dai = { 764 .name = "spdif-hifi", 765 .id = DAI_ID_SPDIF, 766 .probe = hdmi_dai_spdif_probe, 767 .remove = hdmi_codec_dai_remove, 768 .playback = { 769 .stream_name = "SPDIF Playback", 770 .channels_min = 2, 771 .channels_max = 2, 772 .rates = HDMI_RATES, 773 .formats = SPDIF_FORMATS, 774 }, 775 .ops = &hdmi_codec_spdif_dai_ops, 776 .pcm_new = hdmi_codec_pcm_new, 777 }; 778 779 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component, 780 struct device_node *endpoint) 781 { 782 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); 783 int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */ 784 785 if (hcp->hcd.ops->get_dai_id) 786 ret = hcp->hcd.ops->get_dai_id(component, endpoint); 787 788 return ret; 789 } 790 791 static void hdmi_remove(struct snd_soc_component *component) 792 { 793 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); 794 795 if (hcp->hcd.ops->hook_plugged_cb) 796 hcp->hcd.ops->hook_plugged_cb(component->dev->parent, 797 hcp->hcd.data, NULL, NULL); 798 } 799 800 static const struct snd_soc_component_driver hdmi_driver = { 801 .remove = hdmi_remove, 802 .dapm_widgets = hdmi_widgets, 803 .num_dapm_widgets = ARRAY_SIZE(hdmi_widgets), 804 .of_xlate_dai_id = hdmi_of_xlate_dai_id, 805 .idle_bias_on = 1, 806 .use_pmdown_time = 1, 807 .endianness = 1, 808 .non_legacy_dai_naming = 1, 809 }; 810 811 static int hdmi_codec_probe(struct platform_device *pdev) 812 { 813 struct hdmi_codec_pdata *hcd = pdev->dev.platform_data; 814 struct snd_soc_dai_driver *daidrv; 815 struct device *dev = &pdev->dev; 816 struct hdmi_codec_priv *hcp; 817 int dai_count, i = 0; 818 int ret; 819 820 if (!hcd) { 821 dev_err(dev, "%s: No platform data\n", __func__); 822 return -EINVAL; 823 } 824 825 dai_count = hcd->i2s + hcd->spdif; 826 if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params || 827 !hcd->ops->audio_shutdown) { 828 dev_err(dev, "%s: Invalid parameters\n", __func__); 829 return -EINVAL; 830 } 831 832 hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL); 833 if (!hcp) 834 return -ENOMEM; 835 836 hcp->hcd = *hcd; 837 mutex_init(&hcp->lock); 838 839 daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL); 840 if (!daidrv) 841 return -ENOMEM; 842 843 if (hcd->i2s) { 844 daidrv[i] = hdmi_i2s_dai; 845 daidrv[i].playback.channels_max = hcd->max_i2s_channels; 846 i++; 847 } 848 849 if (hcd->spdif) 850 daidrv[i] = hdmi_spdif_dai; 851 852 dev_set_drvdata(dev, hcp); 853 854 ret = devm_snd_soc_register_component(dev, &hdmi_driver, daidrv, 855 dai_count); 856 if (ret) { 857 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n", 858 __func__, ret); 859 return ret; 860 } 861 return 0; 862 } 863 864 static struct platform_driver hdmi_codec_driver = { 865 .driver = { 866 .name = HDMI_CODEC_DRV_NAME, 867 }, 868 .probe = hdmi_codec_probe, 869 }; 870 871 module_platform_driver(hdmi_codec_driver); 872 873 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>"); 874 MODULE_DESCRIPTION("HDMI Audio Codec Driver"); 875 MODULE_LICENSE("GPL"); 876 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME); 877