1 // SPDX-License-Identifier: GPL-2.0+ 2 // Copyright 2017-2021 NXP 3 4 #include <linux/module.h> 5 #include <linux/init.h> 6 #include <linux/slab.h> 7 #include <linux/gpio/consumer.h> 8 #include <linux/of_device.h> 9 #include <linux/i2c.h> 10 #include <linux/of_gpio.h> 11 #include <linux/clk.h> 12 #include <sound/soc.h> 13 #include <sound/pcm_params.h> 14 #include <sound/pcm.h> 15 #include <sound/soc-dapm.h> 16 #include <sound/simple_card_utils.h> 17 18 #include "fsl_sai.h" 19 20 enum codec_type { 21 CODEC_DUMMY = 0, 22 CODEC_AK5558 = 1, 23 CODEC_AK4458, 24 CODEC_AK4497, 25 CODEC_AK5552, 26 }; 27 28 /* 29 * Mapping LRCK fs and frame width, table 3 & 4 in datasheet 30 * @rmin: min rate 31 * @rmax: max rate 32 * @wmin: min frame ratio 33 * @wmax: max frame ratio 34 */ 35 struct imx_akcodec_fs_mul { 36 unsigned int rmin; 37 unsigned int rmax; 38 unsigned int wmin; 39 unsigned int wmax; 40 }; 41 42 /* 43 * Mapping TDM mode and frame width 44 */ 45 struct imx_akcodec_tdm_fs_mul { 46 unsigned int min; 47 unsigned int max; 48 unsigned int mul; 49 }; 50 51 /* 52 * struct imx_card_plat_data - specific info for codecs 53 * 54 * @fs_mul: ratio of mclk/fs for normal mode 55 * @tdm_fs_mul: ratio of mclk/fs for tdm mode 56 * @support_rates: supported sample rate 57 * @support_tdm_rates: supported sample rate for tdm mode 58 * @support_channels: supported channels 59 * @support_tdm_channels: supported channels for tdm mode 60 * @num_fs_mul: ARRAY_SIZE of fs_mul 61 * @num_tdm_fs_mul: ARRAY_SIZE of tdm_fs_mul 62 * @num_rates: ARRAY_SIZE of support_rates 63 * @num_tdm_rates: ARRAY_SIZE of support_tdm_rates 64 * @num_channels: ARRAY_SIZE of support_channels 65 * @num_tdm_channels: ARRAY_SIZE of support_tdm_channels 66 * @type: codec type 67 */ 68 struct imx_card_plat_data { 69 struct imx_akcodec_fs_mul *fs_mul; 70 struct imx_akcodec_tdm_fs_mul *tdm_fs_mul; 71 const u32 *support_rates; 72 const u32 *support_tdm_rates; 73 const u32 *support_channels; 74 const u32 *support_tdm_channels; 75 unsigned int num_fs_mul; 76 unsigned int num_tdm_fs_mul; 77 unsigned int num_rates; 78 unsigned int num_tdm_rates; 79 unsigned int num_channels; 80 unsigned int num_tdm_channels; 81 unsigned int num_codecs; 82 enum codec_type type; 83 }; 84 85 /* 86 * struct dai_link_data - specific info for dai link 87 * 88 * @slots: slot number 89 * @slot_width: slot width value 90 * @cpu_sysclk_id: sysclk id for cpu dai 91 * @one2one_ratio: true if mclk equal to bclk 92 */ 93 struct dai_link_data { 94 unsigned int slots; 95 unsigned int slot_width; 96 unsigned int cpu_sysclk_id; 97 bool one2one_ratio; 98 }; 99 100 /* 101 * struct imx_card_data - platform device data 102 * 103 * @plat_data: pointer of imx_card_plat_data 104 * @dapm_routes: pointer of dapm_routes 105 * @link_data: private data for dai link 106 * @card: card instance 107 * @num_dapm_routes: number of dapm_routes 108 * @asrc_rate: asrc rates 109 * @asrc_format: asrc format 110 */ 111 struct imx_card_data { 112 struct imx_card_plat_data *plat_data; 113 struct snd_soc_dapm_route *dapm_routes; 114 struct dai_link_data *link_data; 115 struct snd_soc_card card; 116 int num_dapm_routes; 117 u32 asrc_rate; 118 u32 asrc_format; 119 }; 120 121 static struct imx_akcodec_fs_mul ak4458_fs_mul[] = { 122 /* Normal, < 32kHz */ 123 { .rmin = 8000, .rmax = 24000, .wmin = 256, .wmax = 1024, }, 124 /* Normal, 32kHz */ 125 { .rmin = 32000, .rmax = 32000, .wmin = 256, .wmax = 1024, }, 126 /* Normal */ 127 { .rmin = 44100, .rmax = 48000, .wmin = 256, .wmax = 768, }, 128 /* Double */ 129 { .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 512, }, 130 /* Quad */ 131 { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 256, }, 132 /* Oct */ 133 { .rmin = 352800, .rmax = 384000, .wmin = 32, .wmax = 128, }, 134 /* Hex */ 135 { .rmin = 705600, .rmax = 768000, .wmin = 16, .wmax = 64, }, 136 }; 137 138 static struct imx_akcodec_tdm_fs_mul ak4458_tdm_fs_mul[] = { 139 /* 140 * Table 13 - Audio Interface Format 141 * For TDM mode, MCLK should is set to 142 * obtained from 2 * slots * slot_width 143 */ 144 { .min = 128, .max = 128, .mul = 256 }, /* TDM128 */ 145 { .min = 256, .max = 256, .mul = 512 }, /* TDM256 */ 146 { .min = 512, .max = 512, .mul = 1024 }, /* TDM512 */ 147 }; 148 149 static struct imx_akcodec_fs_mul ak4497_fs_mul[] = { 150 /** 151 * Table 7 - mapping multiplier and speed mode 152 * Tables 8 & 9 - mapping speed mode and LRCK fs 153 */ 154 { .rmin = 8000, .rmax = 32000, .wmin = 256, .wmax = 1024, }, /* Normal, <= 32kHz */ 155 { .rmin = 44100, .rmax = 48000, .wmin = 256, .wmax = 512, }, /* Normal */ 156 { .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 256, }, /* Double */ 157 { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 128, }, /* Quad */ 158 { .rmin = 352800, .rmax = 384000, .wmin = 128, .wmax = 128, }, /* Oct */ 159 { .rmin = 705600, .rmax = 768000, .wmin = 64, .wmax = 64, }, /* Hex */ 160 }; 161 162 /* 163 * Auto MCLK selection based on LRCK for Normal Mode 164 * (Table 4 from datasheet) 165 */ 166 static struct imx_akcodec_fs_mul ak5558_fs_mul[] = { 167 { .rmin = 8000, .rmax = 32000, .wmin = 512, .wmax = 1024, }, 168 { .rmin = 44100, .rmax = 48000, .wmin = 512, .wmax = 512, }, 169 { .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 256, }, 170 { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 128, }, 171 { .rmin = 352800, .rmax = 384000, .wmin = 64, .wmax = 64, }, 172 { .rmin = 705600, .rmax = 768000, .wmin = 32, .wmax = 32, }, 173 }; 174 175 /* 176 * MCLK and BCLK selection based on TDM mode 177 * because of SAI we also add the restriction: MCLK >= 2 * BCLK 178 * (Table 9 from datasheet) 179 */ 180 static struct imx_akcodec_tdm_fs_mul ak5558_tdm_fs_mul[] = { 181 { .min = 128, .max = 128, .mul = 256 }, 182 { .min = 256, .max = 256, .mul = 512 }, 183 { .min = 512, .max = 512, .mul = 1024 }, 184 }; 185 186 static const u32 akcodec_rates[] = { 187 8000, 11025, 16000, 22050, 32000, 44100, 48000, 88200, 188 96000, 176400, 192000, 352800, 384000, 705600, 768000, 189 }; 190 191 static const u32 akcodec_tdm_rates[] = { 192 8000, 16000, 32000, 48000, 96000, 193 }; 194 195 static const u32 ak4458_channels[] = { 196 1, 2, 4, 6, 8, 10, 12, 14, 16, 197 }; 198 199 static const u32 ak4458_tdm_channels[] = { 200 1, 2, 3, 4, 5, 6, 7, 8, 16, 201 }; 202 203 static const u32 ak5558_channels[] = { 204 1, 2, 4, 6, 8, 205 }; 206 207 static const u32 ak5558_tdm_channels[] = { 208 1, 2, 3, 4, 5, 6, 7, 8, 209 }; 210 211 static bool format_is_dsd(struct snd_pcm_hw_params *params) 212 { 213 snd_pcm_format_t format = params_format(params); 214 215 switch (format) { 216 case SNDRV_PCM_FORMAT_DSD_U8: 217 case SNDRV_PCM_FORMAT_DSD_U16_LE: 218 case SNDRV_PCM_FORMAT_DSD_U16_BE: 219 case SNDRV_PCM_FORMAT_DSD_U32_LE: 220 case SNDRV_PCM_FORMAT_DSD_U32_BE: 221 return true; 222 default: 223 return false; 224 } 225 } 226 227 static bool format_is_tdm(struct dai_link_data *link_data) 228 { 229 if (link_data->slots > 2) 230 return true; 231 else 232 return false; 233 } 234 235 static bool codec_is_akcodec(unsigned int type) 236 { 237 switch (type) { 238 case CODEC_AK4458: 239 case CODEC_AK4497: 240 case CODEC_AK5558: 241 case CODEC_AK5552: 242 return true; 243 default: 244 break; 245 } 246 return false; 247 } 248 249 static unsigned long akcodec_get_mclk_rate(struct snd_pcm_substream *substream, 250 struct snd_pcm_hw_params *params, 251 int slots, int slot_width) 252 { 253 struct snd_soc_pcm_runtime *rtd = substream->private_data; 254 struct imx_card_data *data = snd_soc_card_get_drvdata(rtd->card); 255 const struct imx_card_plat_data *plat_data = data->plat_data; 256 struct dai_link_data *link_data = &data->link_data[rtd->num]; 257 unsigned int width = slots * slot_width; 258 unsigned int rate = params_rate(params); 259 int i; 260 261 if (format_is_tdm(link_data)) { 262 for (i = 0; i < plat_data->num_tdm_fs_mul; i++) { 263 /* min = max = slots * slots_width */ 264 if (width != plat_data->tdm_fs_mul[i].min) 265 continue; 266 return rate * plat_data->tdm_fs_mul[i].mul; 267 } 268 } else { 269 for (i = 0; i < plat_data->num_fs_mul; i++) { 270 if (rate >= plat_data->fs_mul[i].rmin && 271 rate <= plat_data->fs_mul[i].rmax) { 272 width = max(width, plat_data->fs_mul[i].wmin); 273 width = min(width, plat_data->fs_mul[i].wmax); 274 275 /* Adjust SAI bclk:mclk ratio */ 276 width *= link_data->one2one_ratio ? 1 : 2; 277 278 return rate * width; 279 } 280 } 281 } 282 283 /* Let DAI manage clk frequency by default */ 284 return 0; 285 } 286 287 static int imx_aif_hw_params(struct snd_pcm_substream *substream, 288 struct snd_pcm_hw_params *params) 289 { 290 struct snd_soc_pcm_runtime *rtd = substream->private_data; 291 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 292 struct snd_soc_card *card = rtd->card; 293 struct imx_card_data *data = snd_soc_card_get_drvdata(card); 294 struct dai_link_data *link_data = &data->link_data[rtd->num]; 295 struct imx_card_plat_data *plat_data = data->plat_data; 296 struct device *dev = card->dev; 297 struct snd_soc_dai *codec_dai; 298 unsigned long mclk_freq; 299 unsigned int fmt = rtd->dai_link->dai_fmt; 300 unsigned int slots, slot_width; 301 int ret, i; 302 303 slots = link_data->slots; 304 slot_width = link_data->slot_width; 305 306 if (!format_is_tdm(link_data)) { 307 if (format_is_dsd(params)) { 308 slots = 1; 309 slot_width = params_width(params); 310 fmt = (rtd->dai_link->dai_fmt & ~SND_SOC_DAIFMT_FORMAT_MASK) | 311 SND_SOC_DAIFMT_PDM; 312 } else { 313 slots = 2; 314 slot_width = params_physical_width(params); 315 fmt = (rtd->dai_link->dai_fmt & ~SND_SOC_DAIFMT_FORMAT_MASK) | 316 SND_SOC_DAIFMT_I2S; 317 } 318 } 319 320 ret = snd_soc_dai_set_fmt(cpu_dai, fmt); 321 if (ret && ret != -ENOTSUPP) { 322 dev_err(dev, "failed to set cpu dai fmt: %d\n", ret); 323 return ret; 324 } 325 ret = snd_soc_dai_set_tdm_slot(cpu_dai, 326 BIT(slots) - 1, 327 BIT(slots) - 1, 328 slots, slot_width); 329 if (ret && ret != -ENOTSUPP) { 330 dev_err(dev, "failed to set cpu dai tdm slot: %d\n", ret); 331 return ret; 332 } 333 334 for_each_rtd_codec_dais(rtd, i, codec_dai) { 335 ret = snd_soc_dai_set_fmt(codec_dai, fmt); 336 if (ret && ret != -ENOTSUPP) { 337 dev_err(dev, "failed to set codec dai[%d] fmt: %d\n", i, ret); 338 return ret; 339 } 340 341 ret = snd_soc_dai_set_tdm_slot(codec_dai, 342 BIT(slots) - 1, 343 BIT(slots) - 1, 344 slots, slot_width); 345 if (ret && ret != -ENOTSUPP) { 346 dev_err(dev, "failed to set codec dai[%d] tdm slot: %d\n", i, ret); 347 return ret; 348 } 349 } 350 351 /* Set MCLK freq */ 352 if (codec_is_akcodec(plat_data->type)) 353 mclk_freq = akcodec_get_mclk_rate(substream, params, slots, slot_width); 354 else 355 mclk_freq = params_rate(params) * slots * slot_width; 356 /* Use the maximum freq from DSD512 (512*44100 = 22579200) */ 357 if (format_is_dsd(params)) 358 mclk_freq = 22579200; 359 360 ret = snd_soc_dai_set_sysclk(cpu_dai, link_data->cpu_sysclk_id, mclk_freq, 361 SND_SOC_CLOCK_OUT); 362 if (ret && ret != -ENOTSUPP) { 363 dev_err(dev, "failed to set cpui dai mclk1 rate (%lu): %d\n", mclk_freq, ret); 364 return ret; 365 } 366 367 return 0; 368 } 369 370 static int ak5558_hw_rule_rate(struct snd_pcm_hw_params *p, struct snd_pcm_hw_rule *r) 371 { 372 struct dai_link_data *link_data = r->private; 373 struct snd_interval t = { .min = 8000, .max = 8000, }; 374 unsigned long mclk_freq; 375 unsigned int fs; 376 int i; 377 378 fs = hw_param_interval(p, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min; 379 fs *= link_data->slots; 380 381 /* Identify maximum supported rate */ 382 for (i = 0; i < ARRAY_SIZE(akcodec_rates); i++) { 383 mclk_freq = fs * akcodec_rates[i]; 384 /* Adjust SAI bclk:mclk ratio */ 385 mclk_freq *= link_data->one2one_ratio ? 1 : 2; 386 387 /* Skip rates for which MCLK is beyond supported value */ 388 if (mclk_freq > 36864000) 389 continue; 390 391 if (t.max < akcodec_rates[i]) 392 t.max = akcodec_rates[i]; 393 } 394 395 return snd_interval_refine(hw_param_interval(p, r->var), &t); 396 } 397 398 static int imx_aif_startup(struct snd_pcm_substream *substream) 399 { 400 struct snd_pcm_runtime *runtime = substream->runtime; 401 struct snd_soc_pcm_runtime *rtd = substream->private_data; 402 struct snd_soc_card *card = rtd->card; 403 struct imx_card_data *data = snd_soc_card_get_drvdata(card); 404 struct dai_link_data *link_data = &data->link_data[rtd->num]; 405 static struct snd_pcm_hw_constraint_list constraint_rates; 406 static struct snd_pcm_hw_constraint_list constraint_channels; 407 int ret = 0; 408 409 if (format_is_tdm(link_data)) { 410 constraint_channels.list = data->plat_data->support_tdm_channels; 411 constraint_channels.count = data->plat_data->num_tdm_channels; 412 constraint_rates.list = data->plat_data->support_tdm_rates; 413 constraint_rates.count = data->plat_data->num_tdm_rates; 414 } else { 415 constraint_channels.list = data->plat_data->support_channels; 416 constraint_channels.count = data->plat_data->num_channels; 417 constraint_rates.list = data->plat_data->support_rates; 418 constraint_rates.count = data->plat_data->num_rates; 419 } 420 421 if (constraint_channels.count) { 422 ret = snd_pcm_hw_constraint_list(runtime, 0, 423 SNDRV_PCM_HW_PARAM_CHANNELS, 424 &constraint_channels); 425 if (ret) 426 return ret; 427 } 428 429 if (constraint_rates.count) { 430 ret = snd_pcm_hw_constraint_list(runtime, 0, 431 SNDRV_PCM_HW_PARAM_RATE, 432 &constraint_rates); 433 if (ret) 434 return ret; 435 } 436 437 if (data->plat_data->type == CODEC_AK5558) 438 ret = snd_pcm_hw_rule_add(substream->runtime, 0, 439 SNDRV_PCM_HW_PARAM_RATE, 440 ak5558_hw_rule_rate, link_data, 441 SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); 442 443 return ret; 444 } 445 446 static const struct snd_soc_ops imx_aif_ops = { 447 .hw_params = imx_aif_hw_params, 448 .startup = imx_aif_startup, 449 }; 450 451 static const struct snd_soc_ops imx_aif_ops_be = { 452 .hw_params = imx_aif_hw_params, 453 }; 454 455 static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 456 struct snd_pcm_hw_params *params) 457 { 458 struct snd_soc_card *card = rtd->card; 459 struct imx_card_data *data = snd_soc_card_get_drvdata(card); 460 struct snd_interval *rate; 461 struct snd_mask *mask; 462 463 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 464 rate->max = data->asrc_rate; 465 rate->min = data->asrc_rate; 466 467 mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 468 snd_mask_none(mask); 469 snd_mask_set(mask, data->asrc_format); 470 471 return 0; 472 } 473 474 static int imx_card_parse_of(struct imx_card_data *data) 475 { 476 struct imx_card_plat_data *plat_data = data->plat_data; 477 struct snd_soc_card *card = &data->card; 478 struct snd_soc_dai_link_component *dlc; 479 struct device_node *platform = NULL; 480 struct device_node *codec = NULL; 481 struct device_node *cpu = NULL; 482 struct device_node *np; 483 struct device *dev = card->dev; 484 struct snd_soc_dai_link *link; 485 struct dai_link_data *link_data; 486 struct of_phandle_args args; 487 int ret, num_links; 488 u32 width; 489 490 ret = snd_soc_of_parse_card_name(card, "model"); 491 if (ret) { 492 dev_err(dev, "Error parsing card name: %d\n", ret); 493 return ret; 494 } 495 496 /* DAPM routes */ 497 if (of_property_read_bool(dev->of_node, "audio-routing")) { 498 ret = snd_soc_of_parse_audio_routing(card, "audio-routing"); 499 if (ret) 500 return ret; 501 } 502 503 /* Populate links */ 504 num_links = of_get_child_count(dev->of_node); 505 506 /* Allocate the DAI link array */ 507 card->dai_link = devm_kcalloc(dev, num_links, sizeof(*link), GFP_KERNEL); 508 if (!card->dai_link) 509 return -ENOMEM; 510 511 data->link_data = devm_kcalloc(dev, num_links, sizeof(*link), GFP_KERNEL); 512 if (!data->link_data) 513 return -ENOMEM; 514 515 card->num_links = num_links; 516 link = card->dai_link; 517 link_data = data->link_data; 518 519 for_each_child_of_node(dev->of_node, np) { 520 dlc = devm_kzalloc(dev, 2 * sizeof(*dlc), GFP_KERNEL); 521 if (!dlc) { 522 ret = -ENOMEM; 523 goto err_put_np; 524 } 525 526 link->cpus = &dlc[0]; 527 link->platforms = &dlc[1]; 528 529 link->num_cpus = 1; 530 link->num_platforms = 1; 531 532 ret = of_property_read_string(np, "link-name", &link->name); 533 if (ret) { 534 dev_err(card->dev, "error getting codec dai_link name\n"); 535 goto err_put_np; 536 } 537 538 cpu = of_get_child_by_name(np, "cpu"); 539 if (!cpu) { 540 dev_err(dev, "%s: Can't find cpu DT node\n", link->name); 541 ret = -EINVAL; 542 goto err; 543 } 544 545 ret = of_parse_phandle_with_args(cpu, "sound-dai", 546 "#sound-dai-cells", 0, &args); 547 if (ret) { 548 dev_err(card->dev, "%s: error getting cpu phandle\n", link->name); 549 goto err; 550 } 551 552 if (of_node_name_eq(args.np, "sai")) { 553 /* sai sysclk id */ 554 link_data->cpu_sysclk_id = FSL_SAI_CLK_MAST1; 555 556 /* sai may support mclk/bclk = 1 */ 557 if (of_find_property(np, "fsl,mclk-equal-bclk", NULL)) { 558 link_data->one2one_ratio = true; 559 } else { 560 int i; 561 562 /* 563 * i.MX8MQ don't support one2one ratio, then 564 * with ak4497 only 16bit case is supported. 565 */ 566 for (i = 0; i < ARRAY_SIZE(ak4497_fs_mul); i++) { 567 if (ak4497_fs_mul[i].rmin == 705600 && 568 ak4497_fs_mul[i].rmax == 768000) { 569 ak4497_fs_mul[i].wmin = 32; 570 ak4497_fs_mul[i].wmax = 32; 571 } 572 } 573 } 574 } 575 576 link->cpus->of_node = args.np; 577 link->platforms->of_node = link->cpus->of_node; 578 link->id = args.args[0]; 579 580 ret = snd_soc_of_get_dai_name(cpu, &link->cpus->dai_name); 581 if (ret) { 582 dev_err_probe(card->dev, ret, 583 "%s: error getting cpu dai name\n", link->name); 584 goto err; 585 } 586 587 codec = of_get_child_by_name(np, "codec"); 588 if (codec) { 589 ret = snd_soc_of_get_dai_link_codecs(dev, codec, link); 590 if (ret < 0) { 591 dev_err_probe(dev, ret, "%s: codec dai not found\n", 592 link->name); 593 goto err; 594 } 595 596 plat_data->num_codecs = link->num_codecs; 597 598 /* Check the akcodec type */ 599 if (!strcmp(link->codecs->dai_name, "ak4458-aif")) 600 plat_data->type = CODEC_AK4458; 601 else if (!strcmp(link->codecs->dai_name, "ak4497-aif")) 602 plat_data->type = CODEC_AK4497; 603 else if (!strcmp(link->codecs->dai_name, "ak5558-aif")) 604 plat_data->type = CODEC_AK5558; 605 else if (!strcmp(link->codecs->dai_name, "ak5552-aif")) 606 plat_data->type = CODEC_AK5552; 607 608 } else { 609 dlc = devm_kzalloc(dev, sizeof(*dlc), GFP_KERNEL); 610 if (!dlc) { 611 ret = -ENOMEM; 612 goto err; 613 } 614 615 link->codecs = dlc; 616 link->num_codecs = 1; 617 618 link->codecs->dai_name = "snd-soc-dummy-dai"; 619 link->codecs->name = "snd-soc-dummy"; 620 } 621 622 if (!strncmp(link->name, "HiFi-ASRC-FE", 12)) { 623 /* DPCM frontend */ 624 link->dynamic = 1; 625 link->dpcm_merged_chan = 1; 626 627 ret = of_property_read_u32(args.np, "fsl,asrc-rate", &data->asrc_rate); 628 if (ret) { 629 dev_err(dev, "failed to get output rate\n"); 630 ret = -EINVAL; 631 goto err; 632 } 633 634 ret = of_property_read_u32(args.np, "fsl,asrc-format", &data->asrc_format); 635 if (ret) { 636 /* Fallback to old binding; translate to asrc_format */ 637 ret = of_property_read_u32(args.np, "fsl,asrc-width", &width); 638 if (ret) { 639 dev_err(dev, 640 "failed to decide output format\n"); 641 goto err; 642 } 643 644 if (width == 24) 645 data->asrc_format = SNDRV_PCM_FORMAT_S24_LE; 646 else 647 data->asrc_format = SNDRV_PCM_FORMAT_S16_LE; 648 } 649 } else if (!strncmp(link->name, "HiFi-ASRC-BE", 12)) { 650 /* DPCM backend */ 651 link->no_pcm = 1; 652 link->platforms->of_node = NULL; 653 link->platforms->name = "snd-soc-dummy"; 654 655 link->be_hw_params_fixup = be_hw_params_fixup; 656 link->ops = &imx_aif_ops_be; 657 } else { 658 link->ops = &imx_aif_ops; 659 } 660 661 if (link->no_pcm || link->dynamic) 662 snd_soc_dai_link_set_capabilities(link); 663 664 /* Get dai fmt */ 665 ret = asoc_simple_parse_daifmt(dev, np, codec, 666 NULL, &link->dai_fmt); 667 if (ret) 668 link->dai_fmt = SND_SOC_DAIFMT_NB_NF | 669 SND_SOC_DAIFMT_CBC_CFC | 670 SND_SOC_DAIFMT_I2S; 671 672 /* Get tdm slot */ 673 snd_soc_of_parse_tdm_slot(np, NULL, NULL, 674 &link_data->slots, 675 &link_data->slot_width); 676 /* default value */ 677 if (!link_data->slots) 678 link_data->slots = 2; 679 680 if (!link_data->slot_width) 681 link_data->slot_width = 32; 682 683 link->ignore_pmdown_time = 1; 684 link->stream_name = link->name; 685 link++; 686 link_data++; 687 688 of_node_put(cpu); 689 of_node_put(codec); 690 of_node_put(platform); 691 } 692 693 return 0; 694 err: 695 of_node_put(cpu); 696 of_node_put(codec); 697 of_node_put(platform); 698 err_put_np: 699 of_node_put(np); 700 return ret; 701 } 702 703 static int imx_card_probe(struct platform_device *pdev) 704 { 705 struct snd_soc_dai_link *link_be = NULL, *link; 706 struct imx_card_plat_data *plat_data; 707 struct imx_card_data *data; 708 int ret, i; 709 710 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); 711 if (!data) 712 return -ENOMEM; 713 714 plat_data = devm_kzalloc(&pdev->dev, sizeof(*plat_data), GFP_KERNEL); 715 if (!plat_data) 716 return -ENOMEM; 717 718 data->plat_data = plat_data; 719 data->card.dev = &pdev->dev; 720 721 dev_set_drvdata(&pdev->dev, &data->card); 722 snd_soc_card_set_drvdata(&data->card, data); 723 ret = imx_card_parse_of(data); 724 if (ret) 725 return ret; 726 727 data->num_dapm_routes = plat_data->num_codecs + 1; 728 data->dapm_routes = devm_kcalloc(&pdev->dev, data->num_dapm_routes, 729 sizeof(struct snd_soc_dapm_route), 730 GFP_KERNEL); 731 if (!data->dapm_routes) 732 return -ENOMEM; 733 734 /* configure the dapm routes */ 735 switch (plat_data->type) { 736 case CODEC_AK4458: 737 case CODEC_AK4497: 738 if (plat_data->num_codecs == 1) { 739 data->dapm_routes[0].sink = "Playback"; 740 data->dapm_routes[0].source = "CPU-Playback"; 741 i = 1; 742 } else { 743 for (i = 0; i < plat_data->num_codecs; i++) { 744 data->dapm_routes[i].sink = 745 devm_kasprintf(&pdev->dev, GFP_KERNEL, "%d %s", 746 i + 1, "Playback"); 747 data->dapm_routes[i].source = "CPU-Playback"; 748 } 749 } 750 data->dapm_routes[i].sink = "CPU-Playback"; 751 data->dapm_routes[i].source = "ASRC-Playback"; 752 break; 753 case CODEC_AK5558: 754 case CODEC_AK5552: 755 if (plat_data->num_codecs == 1) { 756 data->dapm_routes[0].sink = "CPU-Capture"; 757 data->dapm_routes[0].source = "Capture"; 758 i = 1; 759 } else { 760 for (i = 0; i < plat_data->num_codecs; i++) { 761 data->dapm_routes[i].source = 762 devm_kasprintf(&pdev->dev, GFP_KERNEL, "%d %s", 763 i + 1, "Capture"); 764 data->dapm_routes[i].sink = "CPU-Capture"; 765 } 766 } 767 data->dapm_routes[i].sink = "ASRC-Capture"; 768 data->dapm_routes[i].source = "CPU-Capture"; 769 break; 770 default: 771 break; 772 } 773 774 /* default platform data for akcodecs */ 775 if (codec_is_akcodec(plat_data->type)) { 776 plat_data->support_rates = akcodec_rates; 777 plat_data->num_rates = ARRAY_SIZE(akcodec_rates); 778 plat_data->support_tdm_rates = akcodec_tdm_rates; 779 plat_data->num_tdm_rates = ARRAY_SIZE(akcodec_tdm_rates); 780 781 switch (plat_data->type) { 782 case CODEC_AK4458: 783 plat_data->fs_mul = ak4458_fs_mul; 784 plat_data->num_fs_mul = ARRAY_SIZE(ak4458_fs_mul); 785 plat_data->tdm_fs_mul = ak4458_tdm_fs_mul; 786 plat_data->num_tdm_fs_mul = ARRAY_SIZE(ak4458_tdm_fs_mul); 787 plat_data->support_channels = ak4458_channels; 788 plat_data->num_channels = ARRAY_SIZE(ak4458_channels); 789 plat_data->support_tdm_channels = ak4458_tdm_channels; 790 plat_data->num_tdm_channels = ARRAY_SIZE(ak4458_tdm_channels); 791 break; 792 case CODEC_AK4497: 793 plat_data->fs_mul = ak4497_fs_mul; 794 plat_data->num_fs_mul = ARRAY_SIZE(ak4497_fs_mul); 795 plat_data->support_channels = ak4458_channels; 796 plat_data->num_channels = ARRAY_SIZE(ak4458_channels); 797 break; 798 case CODEC_AK5558: 799 case CODEC_AK5552: 800 plat_data->fs_mul = ak5558_fs_mul; 801 plat_data->num_fs_mul = ARRAY_SIZE(ak5558_fs_mul); 802 plat_data->tdm_fs_mul = ak5558_tdm_fs_mul; 803 plat_data->num_tdm_fs_mul = ARRAY_SIZE(ak5558_tdm_fs_mul); 804 plat_data->support_channels = ak5558_channels; 805 plat_data->num_channels = ARRAY_SIZE(ak5558_channels); 806 plat_data->support_tdm_channels = ak5558_tdm_channels; 807 plat_data->num_tdm_channels = ARRAY_SIZE(ak5558_tdm_channels); 808 break; 809 default: 810 break; 811 } 812 } 813 814 /* with asrc as front end */ 815 if (data->card.num_links == 3) { 816 data->card.dapm_routes = data->dapm_routes; 817 data->card.num_dapm_routes = data->num_dapm_routes; 818 for_each_card_prelinks(&data->card, i, link) { 819 if (link->no_pcm == 1) 820 link_be = link; 821 } 822 for_each_card_prelinks(&data->card, i, link) { 823 if (link->dynamic == 1 && link_be) { 824 link->dpcm_playback = link_be->dpcm_playback; 825 link->dpcm_capture = link_be->dpcm_capture; 826 } 827 } 828 } 829 830 ret = devm_snd_soc_register_card(&pdev->dev, &data->card); 831 if (ret) 832 return dev_err_probe(&pdev->dev, ret, "snd_soc_register_card failed\n"); 833 834 return 0; 835 } 836 837 static const struct of_device_id imx_card_dt_ids[] = { 838 { .compatible = "fsl,imx-audio-card", }, 839 { }, 840 }; 841 MODULE_DEVICE_TABLE(of, imx_card_dt_ids); 842 843 static struct platform_driver imx_card_driver = { 844 .driver = { 845 .name = "imx-card", 846 .pm = &snd_soc_pm_ops, 847 .of_match_table = imx_card_dt_ids, 848 }, 849 .probe = imx_card_probe, 850 }; 851 module_platform_driver(imx_card_driver); 852 853 MODULE_DESCRIPTION("Freescale i.MX ASoC Machine Driver"); 854 MODULE_LICENSE("GPL v2"); 855 MODULE_ALIAS("platform:imx-card"); 856