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 /* 24 * CEA speaker placement for HDMI 1.4: 25 * 26 * FL FLC FC FRC FR FRW 27 * 28 * LFE 29 * 30 * RL RLC RC RRC RR 31 * 32 * Speaker placement has to be extended to support HDMI 2.0 33 */ 34 enum hdmi_codec_cea_spk_placement { 35 FL = BIT(0), /* Front Left */ 36 FC = BIT(1), /* Front Center */ 37 FR = BIT(2), /* Front Right */ 38 FLC = BIT(3), /* Front Left Center */ 39 FRC = BIT(4), /* Front Right Center */ 40 RL = BIT(5), /* Rear Left */ 41 RC = BIT(6), /* Rear Center */ 42 RR = BIT(7), /* Rear Right */ 43 RLC = BIT(8), /* Rear Left Center */ 44 RRC = BIT(9), /* Rear Right Center */ 45 LFE = BIT(10), /* Low Frequency Effect */ 46 }; 47 48 /* 49 * cea Speaker allocation structure 50 */ 51 struct hdmi_codec_cea_spk_alloc { 52 const int ca_id; 53 unsigned int n_ch; 54 unsigned long mask; 55 }; 56 57 /* Channel maps stereo HDMI */ 58 static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = { 59 { .channels = 2, 60 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } }, 61 { } 62 }; 63 64 /* Channel maps for multi-channel playbacks, up to 8 n_ch */ 65 static const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = { 66 { .channels = 2, /* CA_ID 0x00 */ 67 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } }, 68 { .channels = 4, /* CA_ID 0x01 */ 69 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 70 SNDRV_CHMAP_NA } }, 71 { .channels = 4, /* CA_ID 0x02 */ 72 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 73 SNDRV_CHMAP_FC } }, 74 { .channels = 4, /* CA_ID 0x03 */ 75 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 76 SNDRV_CHMAP_FC } }, 77 { .channels = 6, /* CA_ID 0x04 */ 78 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 79 SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } }, 80 { .channels = 6, /* CA_ID 0x05 */ 81 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 82 SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } }, 83 { .channels = 6, /* CA_ID 0x06 */ 84 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 85 SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } }, 86 { .channels = 6, /* CA_ID 0x07 */ 87 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 88 SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } }, 89 { .channels = 6, /* CA_ID 0x08 */ 90 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 91 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } }, 92 { .channels = 6, /* CA_ID 0x09 */ 93 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 94 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } }, 95 { .channels = 6, /* CA_ID 0x0A */ 96 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 97 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } }, 98 { .channels = 6, /* CA_ID 0x0B */ 99 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 100 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } }, 101 { .channels = 8, /* CA_ID 0x0C */ 102 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 103 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR, 104 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } }, 105 { .channels = 8, /* CA_ID 0x0D */ 106 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 107 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR, 108 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } }, 109 { .channels = 8, /* CA_ID 0x0E */ 110 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 111 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR, 112 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } }, 113 { .channels = 8, /* CA_ID 0x0F */ 114 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 115 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR, 116 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } }, 117 { .channels = 8, /* CA_ID 0x10 */ 118 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 119 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR, 120 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } }, 121 { .channels = 8, /* CA_ID 0x11 */ 122 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 123 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR, 124 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } }, 125 { .channels = 8, /* CA_ID 0x12 */ 126 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 127 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR, 128 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } }, 129 { .channels = 8, /* CA_ID 0x13 */ 130 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 131 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR, 132 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } }, 133 { .channels = 8, /* CA_ID 0x14 */ 134 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 135 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 136 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 137 { .channels = 8, /* CA_ID 0x15 */ 138 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 139 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 140 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 141 { .channels = 8, /* CA_ID 0x16 */ 142 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 143 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 144 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 145 { .channels = 8, /* CA_ID 0x17 */ 146 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 147 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 148 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 149 { .channels = 8, /* CA_ID 0x18 */ 150 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 151 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 152 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 153 { .channels = 8, /* CA_ID 0x19 */ 154 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 155 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 156 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 157 { .channels = 8, /* CA_ID 0x1A */ 158 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 159 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 160 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 161 { .channels = 8, /* CA_ID 0x1B */ 162 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 163 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 164 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 165 { .channels = 8, /* CA_ID 0x1C */ 166 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 167 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 168 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 169 { .channels = 8, /* CA_ID 0x1D */ 170 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 171 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 172 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 173 { .channels = 8, /* CA_ID 0x1E */ 174 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA, 175 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 176 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 177 { .channels = 8, /* CA_ID 0x1F */ 178 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE, 179 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, 180 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } }, 181 { } 182 }; 183 184 /* 185 * hdmi_codec_channel_alloc: speaker configuration available for CEA 186 * 187 * This is an ordered list that must match with hdmi_codec_8ch_chmaps struct 188 * The preceding ones have better chances to be selected by 189 * hdmi_codec_get_ch_alloc_table_idx(). 190 */ 191 static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = { 192 { .ca_id = 0x00, .n_ch = 2, 193 .mask = FL | FR}, 194 /* 2.1 */ 195 { .ca_id = 0x01, .n_ch = 4, 196 .mask = FL | FR | LFE}, 197 /* Dolby Surround */ 198 { .ca_id = 0x02, .n_ch = 4, 199 .mask = FL | FR | FC }, 200 /* surround51 */ 201 { .ca_id = 0x0b, .n_ch = 6, 202 .mask = FL | FR | LFE | FC | RL | RR}, 203 /* surround40 */ 204 { .ca_id = 0x08, .n_ch = 6, 205 .mask = FL | FR | RL | RR }, 206 /* surround41 */ 207 { .ca_id = 0x09, .n_ch = 6, 208 .mask = FL | FR | LFE | RL | RR }, 209 /* surround50 */ 210 { .ca_id = 0x0a, .n_ch = 6, 211 .mask = FL | FR | FC | RL | RR }, 212 /* 6.1 */ 213 { .ca_id = 0x0f, .n_ch = 8, 214 .mask = FL | FR | LFE | FC | RL | RR | RC }, 215 /* surround71 */ 216 { .ca_id = 0x13, .n_ch = 8, 217 .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC }, 218 /* others */ 219 { .ca_id = 0x03, .n_ch = 8, 220 .mask = FL | FR | LFE | FC }, 221 { .ca_id = 0x04, .n_ch = 8, 222 .mask = FL | FR | RC}, 223 { .ca_id = 0x05, .n_ch = 8, 224 .mask = FL | FR | LFE | RC }, 225 { .ca_id = 0x06, .n_ch = 8, 226 .mask = FL | FR | FC | RC }, 227 { .ca_id = 0x07, .n_ch = 8, 228 .mask = FL | FR | LFE | FC | RC }, 229 { .ca_id = 0x0c, .n_ch = 8, 230 .mask = FL | FR | RC | RL | RR }, 231 { .ca_id = 0x0d, .n_ch = 8, 232 .mask = FL | FR | LFE | RL | RR | RC }, 233 { .ca_id = 0x0e, .n_ch = 8, 234 .mask = FL | FR | FC | RL | RR | RC }, 235 { .ca_id = 0x10, .n_ch = 8, 236 .mask = FL | FR | RL | RR | RLC | RRC }, 237 { .ca_id = 0x11, .n_ch = 8, 238 .mask = FL | FR | LFE | RL | RR | RLC | RRC }, 239 { .ca_id = 0x12, .n_ch = 8, 240 .mask = FL | FR | FC | RL | RR | RLC | RRC }, 241 { .ca_id = 0x14, .n_ch = 8, 242 .mask = FL | FR | FLC | FRC }, 243 { .ca_id = 0x15, .n_ch = 8, 244 .mask = FL | FR | LFE | FLC | FRC }, 245 { .ca_id = 0x16, .n_ch = 8, 246 .mask = FL | FR | FC | FLC | FRC }, 247 { .ca_id = 0x17, .n_ch = 8, 248 .mask = FL | FR | LFE | FC | FLC | FRC }, 249 { .ca_id = 0x18, .n_ch = 8, 250 .mask = FL | FR | RC | FLC | FRC }, 251 { .ca_id = 0x19, .n_ch = 8, 252 .mask = FL | FR | LFE | RC | FLC | FRC }, 253 { .ca_id = 0x1a, .n_ch = 8, 254 .mask = FL | FR | RC | FC | FLC | FRC }, 255 { .ca_id = 0x1b, .n_ch = 8, 256 .mask = FL | FR | LFE | RC | FC | FLC | FRC }, 257 { .ca_id = 0x1c, .n_ch = 8, 258 .mask = FL | FR | RL | RR | FLC | FRC }, 259 { .ca_id = 0x1d, .n_ch = 8, 260 .mask = FL | FR | LFE | RL | RR | FLC | FRC }, 261 { .ca_id = 0x1e, .n_ch = 8, 262 .mask = FL | FR | FC | RL | RR | FLC | FRC }, 263 { .ca_id = 0x1f, .n_ch = 8, 264 .mask = FL | FR | LFE | FC | RL | RR | FLC | FRC }, 265 }; 266 267 struct hdmi_codec_priv { 268 struct hdmi_codec_pdata hcd; 269 uint8_t eld[MAX_ELD_BYTES]; 270 struct snd_pcm_chmap *chmap_info; 271 unsigned int chmap_idx; 272 struct mutex lock; 273 bool busy; 274 struct snd_soc_jack *jack; 275 unsigned int jack_status; 276 u8 iec_status[AES_IEC958_STATUS_SIZE]; 277 }; 278 279 static const struct snd_soc_dapm_widget hdmi_widgets[] = { 280 SND_SOC_DAPM_OUTPUT("TX"), 281 SND_SOC_DAPM_OUTPUT("RX"), 282 }; 283 284 enum { 285 DAI_ID_I2S = 0, 286 DAI_ID_SPDIF, 287 }; 288 289 static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol, 290 struct snd_ctl_elem_info *uinfo) 291 { 292 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; 293 uinfo->count = sizeof_field(struct hdmi_codec_priv, eld); 294 295 return 0; 296 } 297 298 static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol, 299 struct snd_ctl_elem_value *ucontrol) 300 { 301 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 302 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); 303 304 memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld)); 305 306 return 0; 307 } 308 309 static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc) 310 { 311 int i; 312 static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = { 313 [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR, 314 [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC, 315 }; 316 unsigned long spk_mask = 0; 317 318 for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) { 319 if (spk_alloc & (1 << i)) 320 spk_mask |= hdmi_codec_eld_spk_alloc_bits[i]; 321 } 322 323 return spk_mask; 324 } 325 326 static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp) 327 { 328 u8 spk_alloc; 329 unsigned long spk_mask; 330 331 spk_alloc = drm_eld_get_spk_alloc(hcp->eld); 332 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc); 333 334 /* Detect if only stereo supported, else return 8 channels mappings */ 335 if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2) 336 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps; 337 else 338 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps; 339 } 340 341 static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp, 342 unsigned char channels) 343 { 344 int i; 345 u8 spk_alloc; 346 unsigned long spk_mask; 347 const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc; 348 349 spk_alloc = drm_eld_get_spk_alloc(hcp->eld); 350 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc); 351 352 for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) { 353 /* If spk_alloc == 0, HDMI is unplugged return stereo config*/ 354 if (!spk_alloc && cap->ca_id == 0) 355 return i; 356 if (cap->n_ch != channels) 357 continue; 358 if (!(cap->mask == (spk_mask & cap->mask))) 359 continue; 360 return i; 361 } 362 363 return -EINVAL; 364 } 365 static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol, 366 struct snd_ctl_elem_value *ucontrol) 367 { 368 unsigned const char *map; 369 unsigned int i; 370 struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol); 371 struct hdmi_codec_priv *hcp = info->private_data; 372 373 map = info->chmap[hcp->chmap_idx].map; 374 375 for (i = 0; i < info->max_channels; i++) { 376 if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN) 377 ucontrol->value.integer.value[i] = 0; 378 else 379 ucontrol->value.integer.value[i] = map[i]; 380 } 381 382 return 0; 383 } 384 385 static int hdmi_codec_iec958_info(struct snd_kcontrol *kcontrol, 386 struct snd_ctl_elem_info *uinfo) 387 { 388 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; 389 uinfo->count = 1; 390 return 0; 391 } 392 393 static int hdmi_codec_iec958_default_get(struct snd_kcontrol *kcontrol, 394 struct snd_ctl_elem_value *ucontrol) 395 { 396 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 397 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); 398 399 memcpy(ucontrol->value.iec958.status, hcp->iec_status, 400 sizeof(hcp->iec_status)); 401 402 return 0; 403 } 404 405 static int hdmi_codec_iec958_default_put(struct snd_kcontrol *kcontrol, 406 struct snd_ctl_elem_value *ucontrol) 407 { 408 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 409 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); 410 411 memcpy(hcp->iec_status, ucontrol->value.iec958.status, 412 sizeof(hcp->iec_status)); 413 414 return 0; 415 } 416 417 static int hdmi_codec_iec958_mask_get(struct snd_kcontrol *kcontrol, 418 struct snd_ctl_elem_value *ucontrol) 419 { 420 memset(ucontrol->value.iec958.status, 0xff, 421 sizeof_field(struct hdmi_codec_priv, iec_status)); 422 423 return 0; 424 } 425 426 static int hdmi_codec_startup(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 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 431 int ret = 0; 432 433 mutex_lock(&hcp->lock); 434 if (hcp->busy) { 435 dev_err(dai->dev, "Only one simultaneous stream supported!\n"); 436 mutex_unlock(&hcp->lock); 437 return -EINVAL; 438 } 439 440 if (hcp->hcd.ops->audio_startup) { 441 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data); 442 if (ret) 443 goto err; 444 } 445 446 if (tx && hcp->hcd.ops->get_eld) { 447 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data, 448 hcp->eld, sizeof(hcp->eld)); 449 if (ret) 450 goto err; 451 452 ret = snd_pcm_hw_constraint_eld(substream->runtime, hcp->eld); 453 if (ret) 454 goto err; 455 456 /* Select chmap supported */ 457 hdmi_codec_eld_chmap(hcp); 458 } 459 460 hcp->busy = true; 461 462 err: 463 mutex_unlock(&hcp->lock); 464 return ret; 465 } 466 467 static void hdmi_codec_shutdown(struct snd_pcm_substream *substream, 468 struct snd_soc_dai *dai) 469 { 470 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 471 472 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN; 473 hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data); 474 475 mutex_lock(&hcp->lock); 476 hcp->busy = false; 477 mutex_unlock(&hcp->lock); 478 } 479 480 static int hdmi_codec_fill_codec_params(struct snd_soc_dai *dai, 481 unsigned int sample_width, 482 unsigned int sample_rate, 483 unsigned int channels, 484 struct hdmi_codec_params *hp) 485 { 486 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 487 int idx; 488 489 /* Select a channel allocation that matches with ELD and pcm channels */ 490 idx = hdmi_codec_get_ch_alloc_table_idx(hcp, channels); 491 if (idx < 0) { 492 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n", 493 idx); 494 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN; 495 return idx; 496 } 497 498 memset(hp, 0, sizeof(*hp)); 499 500 hdmi_audio_infoframe_init(&hp->cea); 501 hp->cea.channels = channels; 502 hp->cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM; 503 hp->cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM; 504 hp->cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM; 505 hp->cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id; 506 507 hp->sample_width = sample_width; 508 hp->sample_rate = sample_rate; 509 hp->channels = channels; 510 511 hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id; 512 513 return 0; 514 } 515 516 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream, 517 struct snd_pcm_hw_params *params, 518 struct snd_soc_dai *dai) 519 { 520 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 521 struct hdmi_codec_daifmt *cf = dai->playback_dma_data; 522 struct hdmi_codec_params hp = { 523 .iec = { 524 .status = { 0 }, 525 .subcode = { 0 }, 526 .pad = 0, 527 .dig_subframe = { 0 }, 528 } 529 }; 530 int ret; 531 532 if (!hcp->hcd.ops->hw_params) 533 return 0; 534 535 dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__, 536 params_width(params), params_rate(params), 537 params_channels(params)); 538 539 ret = hdmi_codec_fill_codec_params(dai, 540 params_width(params), 541 params_rate(params), 542 params_channels(params), 543 &hp); 544 if (ret < 0) 545 return ret; 546 547 memcpy(hp.iec.status, hcp->iec_status, sizeof(hp.iec.status)); 548 ret = snd_pcm_fill_iec958_consumer_hw_params(params, hp.iec.status, 549 sizeof(hp.iec.status)); 550 if (ret < 0) { 551 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n", 552 ret); 553 return ret; 554 } 555 556 cf->bit_fmt = params_format(params); 557 return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data, 558 cf, &hp); 559 } 560 561 static int hdmi_codec_prepare(struct snd_pcm_substream *substream, 562 struct snd_soc_dai *dai) 563 { 564 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 565 struct hdmi_codec_daifmt *cf = dai->playback_dma_data; 566 struct snd_pcm_runtime *runtime = substream->runtime; 567 unsigned int channels = runtime->channels; 568 unsigned int width = snd_pcm_format_width(runtime->format); 569 unsigned int rate = runtime->rate; 570 struct hdmi_codec_params hp; 571 int ret; 572 573 if (!hcp->hcd.ops->prepare) 574 return 0; 575 576 dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__, 577 width, rate, channels); 578 579 ret = hdmi_codec_fill_codec_params(dai, width, rate, channels, &hp); 580 if (ret < 0) 581 return ret; 582 583 memcpy(hp.iec.status, hcp->iec_status, sizeof(hp.iec.status)); 584 ret = snd_pcm_fill_iec958_consumer(runtime, hp.iec.status, 585 sizeof(hp.iec.status)); 586 if (ret < 0) { 587 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n", 588 ret); 589 return ret; 590 } 591 592 cf->bit_fmt = runtime->format; 593 return hcp->hcd.ops->prepare(dai->dev->parent, hcp->hcd.data, 594 cf, &hp); 595 } 596 597 static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai, 598 unsigned int fmt) 599 { 600 struct hdmi_codec_daifmt *cf = dai->playback_dma_data; 601 602 /* Reset daifmt */ 603 memset(cf, 0, sizeof(*cf)); 604 605 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { 606 case SND_SOC_DAIFMT_CBP_CFP: 607 cf->bit_clk_provider = 1; 608 cf->frame_clk_provider = 1; 609 break; 610 case SND_SOC_DAIFMT_CBC_CFP: 611 cf->frame_clk_provider = 1; 612 break; 613 case SND_SOC_DAIFMT_CBP_CFC: 614 cf->bit_clk_provider = 1; 615 break; 616 case SND_SOC_DAIFMT_CBC_CFC: 617 break; 618 default: 619 return -EINVAL; 620 } 621 622 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 623 case SND_SOC_DAIFMT_NB_NF: 624 break; 625 case SND_SOC_DAIFMT_NB_IF: 626 cf->frame_clk_inv = 1; 627 break; 628 case SND_SOC_DAIFMT_IB_NF: 629 cf->bit_clk_inv = 1; 630 break; 631 case SND_SOC_DAIFMT_IB_IF: 632 cf->frame_clk_inv = 1; 633 cf->bit_clk_inv = 1; 634 break; 635 } 636 637 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 638 case SND_SOC_DAIFMT_I2S: 639 cf->fmt = HDMI_I2S; 640 break; 641 case SND_SOC_DAIFMT_DSP_A: 642 cf->fmt = HDMI_DSP_A; 643 break; 644 case SND_SOC_DAIFMT_DSP_B: 645 cf->fmt = HDMI_DSP_B; 646 break; 647 case SND_SOC_DAIFMT_RIGHT_J: 648 cf->fmt = HDMI_RIGHT_J; 649 break; 650 case SND_SOC_DAIFMT_LEFT_J: 651 cf->fmt = HDMI_LEFT_J; 652 break; 653 case SND_SOC_DAIFMT_AC97: 654 cf->fmt = HDMI_AC97; 655 break; 656 default: 657 dev_err(dai->dev, "Invalid DAI interface format\n"); 658 return -EINVAL; 659 } 660 661 return 0; 662 } 663 664 static int hdmi_codec_mute(struct snd_soc_dai *dai, int mute, int direction) 665 { 666 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 667 668 /* 669 * ignore if direction was CAPTURE 670 * and it had .no_capture_mute flag 671 * see 672 * snd_soc_dai_digital_mute() 673 */ 674 if (hcp->hcd.ops->mute_stream && 675 (direction == SNDRV_PCM_STREAM_PLAYBACK || 676 !hcp->hcd.ops->no_capture_mute)) 677 return hcp->hcd.ops->mute_stream(dai->dev->parent, 678 hcp->hcd.data, 679 mute, direction); 680 681 return -ENOTSUPP; 682 } 683 684 /* 685 * This driver can select all SND_SOC_DAIFMT_CBx_CFx, 686 * but need to be selected from Sound Card, not be auto selected. 687 * Because it might be used from other driver. 688 * For example, 689 * ${LINUX}/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c 690 */ 691 static u64 hdmi_codec_formats = 692 SND_SOC_POSSIBLE_DAIFMT_NB_NF | 693 SND_SOC_POSSIBLE_DAIFMT_NB_IF | 694 SND_SOC_POSSIBLE_DAIFMT_IB_NF | 695 SND_SOC_POSSIBLE_DAIFMT_IB_IF | 696 SND_SOC_POSSIBLE_DAIFMT_I2S | 697 SND_SOC_POSSIBLE_DAIFMT_DSP_A | 698 SND_SOC_POSSIBLE_DAIFMT_DSP_B | 699 SND_SOC_POSSIBLE_DAIFMT_RIGHT_J | 700 SND_SOC_POSSIBLE_DAIFMT_LEFT_J | 701 SND_SOC_POSSIBLE_DAIFMT_AC97; 702 703 static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = { 704 .startup = hdmi_codec_startup, 705 .shutdown = hdmi_codec_shutdown, 706 .hw_params = hdmi_codec_hw_params, 707 .prepare = hdmi_codec_prepare, 708 .set_fmt = hdmi_codec_i2s_set_fmt, 709 .mute_stream = hdmi_codec_mute, 710 .auto_selectable_formats = &hdmi_codec_formats, 711 .num_auto_selectable_formats = 1, 712 }; 713 714 static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = { 715 .startup = hdmi_codec_startup, 716 .shutdown = hdmi_codec_shutdown, 717 .hw_params = hdmi_codec_hw_params, 718 .mute_stream = hdmi_codec_mute, 719 }; 720 721 #define HDMI_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ 722 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\ 723 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\ 724 SNDRV_PCM_RATE_192000) 725 726 #define SPDIF_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 727 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE) 728 729 /* 730 * This list is only for formats allowed on the I2S bus. So there is 731 * some formats listed that are not supported by HDMI interface. For 732 * instance allowing the 32-bit formats enables 24-precision with CPU 733 * DAIs that do not support 24-bit formats. If the extra formats cause 734 * problems, we should add the video side driver an option to disable 735 * them. 736 */ 737 #define I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 738 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE |\ 739 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE) 740 741 static struct snd_kcontrol_new hdmi_codec_controls[] = { 742 { 743 .access = SNDRV_CTL_ELEM_ACCESS_READ, 744 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 745 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK), 746 .info = hdmi_codec_iec958_info, 747 .get = hdmi_codec_iec958_mask_get, 748 }, 749 { 750 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 751 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT), 752 .info = hdmi_codec_iec958_info, 753 .get = hdmi_codec_iec958_default_get, 754 .put = hdmi_codec_iec958_default_put, 755 }, 756 { 757 .access = (SNDRV_CTL_ELEM_ACCESS_READ | 758 SNDRV_CTL_ELEM_ACCESS_VOLATILE), 759 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 760 .name = "ELD", 761 .info = hdmi_eld_ctl_info, 762 .get = hdmi_eld_ctl_get, 763 }, 764 }; 765 766 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd, 767 struct snd_soc_dai *dai) 768 { 769 struct snd_soc_dai_driver *drv = dai->driver; 770 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); 771 unsigned int i; 772 int ret; 773 774 ret = snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK, 775 NULL, drv->playback.channels_max, 0, 776 &hcp->chmap_info); 777 if (ret < 0) 778 return ret; 779 780 /* override handlers */ 781 hcp->chmap_info->private_data = hcp; 782 hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get; 783 784 /* default chmap supported is stereo */ 785 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps; 786 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN; 787 788 for (i = 0; i < ARRAY_SIZE(hdmi_codec_controls); i++) { 789 struct snd_kcontrol *kctl; 790 791 /* add ELD ctl with the device number corresponding to the PCM stream */ 792 kctl = snd_ctl_new1(&hdmi_codec_controls[i], dai->component); 793 if (!kctl) 794 return -ENOMEM; 795 796 kctl->id.device = rtd->pcm->device; 797 ret = snd_ctl_add(rtd->card->snd_card, kctl); 798 if (ret < 0) 799 return ret; 800 } 801 802 return 0; 803 } 804 805 static int hdmi_dai_probe(struct snd_soc_dai *dai) 806 { 807 struct snd_soc_dapm_context *dapm; 808 struct hdmi_codec_daifmt *daifmt; 809 struct snd_soc_dapm_route route[] = { 810 { 811 .sink = "TX", 812 .source = dai->driver->playback.stream_name, 813 }, 814 { 815 .sink = dai->driver->capture.stream_name, 816 .source = "RX", 817 }, 818 }; 819 int ret; 820 821 dapm = snd_soc_component_get_dapm(dai->component); 822 ret = snd_soc_dapm_add_routes(dapm, route, 2); 823 if (ret) 824 return ret; 825 826 daifmt = devm_kzalloc(dai->dev, sizeof(*daifmt), GFP_KERNEL); 827 if (!daifmt) 828 return -ENOMEM; 829 830 dai->playback_dma_data = daifmt; 831 return 0; 832 } 833 834 static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp, 835 unsigned int jack_status) 836 { 837 if (hcp->jack && jack_status != hcp->jack_status) { 838 snd_soc_jack_report(hcp->jack, jack_status, SND_JACK_LINEOUT); 839 hcp->jack_status = jack_status; 840 } 841 } 842 843 static void plugged_cb(struct device *dev, bool plugged) 844 { 845 struct hdmi_codec_priv *hcp = dev_get_drvdata(dev); 846 847 if (plugged) { 848 if (hcp->hcd.ops->get_eld) { 849 hcp->hcd.ops->get_eld(dev->parent, hcp->hcd.data, 850 hcp->eld, sizeof(hcp->eld)); 851 } 852 hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT); 853 } else { 854 hdmi_codec_jack_report(hcp, 0); 855 memset(hcp->eld, 0, sizeof(hcp->eld)); 856 } 857 } 858 859 static int hdmi_codec_set_jack(struct snd_soc_component *component, 860 struct snd_soc_jack *jack, 861 void *data) 862 { 863 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); 864 int ret = -ENOTSUPP; 865 866 if (hcp->hcd.ops->hook_plugged_cb) { 867 hcp->jack = jack; 868 ret = hcp->hcd.ops->hook_plugged_cb(component->dev->parent, 869 hcp->hcd.data, 870 plugged_cb, 871 component->dev); 872 if (ret) 873 hcp->jack = NULL; 874 } 875 return ret; 876 } 877 878 static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai) 879 { 880 struct hdmi_codec_daifmt *cf; 881 int ret; 882 883 ret = hdmi_dai_probe(dai); 884 if (ret) 885 return ret; 886 887 cf = dai->playback_dma_data; 888 cf->fmt = HDMI_SPDIF; 889 890 return 0; 891 } 892 893 static const struct snd_soc_dai_driver hdmi_i2s_dai = { 894 .name = "i2s-hifi", 895 .id = DAI_ID_I2S, 896 .probe = hdmi_dai_probe, 897 .playback = { 898 .stream_name = "I2S Playback", 899 .channels_min = 2, 900 .channels_max = 8, 901 .rates = HDMI_RATES, 902 .formats = I2S_FORMATS, 903 .sig_bits = 24, 904 }, 905 .capture = { 906 .stream_name = "Capture", 907 .channels_min = 2, 908 .channels_max = 8, 909 .rates = HDMI_RATES, 910 .formats = I2S_FORMATS, 911 .sig_bits = 24, 912 }, 913 .ops = &hdmi_codec_i2s_dai_ops, 914 .pcm_new = hdmi_codec_pcm_new, 915 }; 916 917 static const struct snd_soc_dai_driver hdmi_spdif_dai = { 918 .name = "spdif-hifi", 919 .id = DAI_ID_SPDIF, 920 .probe = hdmi_dai_spdif_probe, 921 .playback = { 922 .stream_name = "SPDIF Playback", 923 .channels_min = 2, 924 .channels_max = 2, 925 .rates = HDMI_RATES, 926 .formats = SPDIF_FORMATS, 927 }, 928 .capture = { 929 .stream_name = "Capture", 930 .channels_min = 2, 931 .channels_max = 2, 932 .rates = HDMI_RATES, 933 .formats = SPDIF_FORMATS, 934 }, 935 .ops = &hdmi_codec_spdif_dai_ops, 936 .pcm_new = hdmi_codec_pcm_new, 937 }; 938 939 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component, 940 struct device_node *endpoint) 941 { 942 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); 943 int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */ 944 945 if (hcp->hcd.ops->get_dai_id) 946 ret = hcp->hcd.ops->get_dai_id(component, endpoint); 947 948 return ret; 949 } 950 951 static void hdmi_remove(struct snd_soc_component *component) 952 { 953 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); 954 955 if (hcp->hcd.ops->hook_plugged_cb) 956 hcp->hcd.ops->hook_plugged_cb(component->dev->parent, 957 hcp->hcd.data, NULL, NULL); 958 } 959 960 static const struct snd_soc_component_driver hdmi_driver = { 961 .remove = hdmi_remove, 962 .dapm_widgets = hdmi_widgets, 963 .num_dapm_widgets = ARRAY_SIZE(hdmi_widgets), 964 .of_xlate_dai_id = hdmi_of_xlate_dai_id, 965 .idle_bias_on = 1, 966 .use_pmdown_time = 1, 967 .endianness = 1, 968 .set_jack = hdmi_codec_set_jack, 969 }; 970 971 static int hdmi_codec_probe(struct platform_device *pdev) 972 { 973 struct hdmi_codec_pdata *hcd = pdev->dev.platform_data; 974 struct snd_soc_dai_driver *daidrv; 975 struct device *dev = &pdev->dev; 976 struct hdmi_codec_priv *hcp; 977 int dai_count, i = 0; 978 int ret; 979 980 if (!hcd) { 981 dev_err(dev, "%s: No platform data\n", __func__); 982 return -EINVAL; 983 } 984 985 dai_count = hcd->i2s + hcd->spdif; 986 if (dai_count < 1 || !hcd->ops || 987 (!hcd->ops->hw_params && !hcd->ops->prepare) || 988 !hcd->ops->audio_shutdown) { 989 dev_err(dev, "%s: Invalid parameters\n", __func__); 990 return -EINVAL; 991 } 992 993 hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL); 994 if (!hcp) 995 return -ENOMEM; 996 997 hcp->hcd = *hcd; 998 mutex_init(&hcp->lock); 999 1000 ret = snd_pcm_create_iec958_consumer_default(hcp->iec_status, 1001 sizeof(hcp->iec_status)); 1002 if (ret < 0) 1003 return ret; 1004 1005 daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL); 1006 if (!daidrv) 1007 return -ENOMEM; 1008 1009 if (hcd->i2s) { 1010 daidrv[i] = hdmi_i2s_dai; 1011 daidrv[i].playback.channels_max = hcd->max_i2s_channels; 1012 i++; 1013 } 1014 1015 if (hcd->spdif) 1016 daidrv[i] = hdmi_spdif_dai; 1017 1018 dev_set_drvdata(dev, hcp); 1019 1020 ret = devm_snd_soc_register_component(dev, &hdmi_driver, daidrv, 1021 dai_count); 1022 if (ret) { 1023 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n", 1024 __func__, ret); 1025 return ret; 1026 } 1027 return 0; 1028 } 1029 1030 static struct platform_driver hdmi_codec_driver = { 1031 .driver = { 1032 .name = HDMI_CODEC_DRV_NAME, 1033 }, 1034 .probe = hdmi_codec_probe, 1035 }; 1036 1037 module_platform_driver(hdmi_codec_driver); 1038 1039 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>"); 1040 MODULE_DESCRIPTION("HDMI Audio Codec Driver"); 1041 MODULE_LICENSE("GPL"); 1042 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME); 1043