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.h> 9 #include <linux/i2c.h> 10 #include <linux/clk.h> 11 #include <sound/soc.h> 12 #include <sound/pcm_params.h> 13 #include <sound/pcm.h> 14 #include <sound/soc-dapm.h> 15 #include <sound/simple_card_utils.h> 16 17 #include "fsl_sai.h" 18 19 #define IMX_CARD_MCLK_22P5792MHZ 22579200 20 #define IMX_CARD_MCLK_24P576MHZ 24576000 21 22 enum codec_type { 23 CODEC_DUMMY = 0, 24 CODEC_AK5558 = 1, 25 CODEC_AK4458, 26 CODEC_AK4497, 27 CODEC_AK5552, 28 CODEC_CS42888, 29 CODEC_WM8524, 30 }; 31 32 /* 33 * Mapping LRCK fs and frame width, table 3 & 4 in datasheet 34 * @rmin: min rate 35 * @rmax: max rate 36 * @wmin: min frame ratio 37 * @wmax: max frame ratio 38 */ 39 struct imx_akcodec_fs_mul { 40 unsigned int rmin; 41 unsigned int rmax; 42 unsigned int wmin; 43 unsigned int wmax; 44 }; 45 46 /* 47 * Mapping TDM mode and frame width 48 */ 49 struct imx_akcodec_tdm_fs_mul { 50 unsigned int min; 51 unsigned int max; 52 unsigned int mul; 53 }; 54 55 /* 56 * struct imx_card_plat_data - specific info for codecs 57 * 58 * @fs_mul: ratio of mclk/fs for normal mode 59 * @tdm_fs_mul: ratio of mclk/fs for tdm mode 60 * @support_rates: supported sample rate 61 * @support_tdm_rates: supported sample rate for tdm mode 62 * @support_channels: supported channels 63 * @support_tdm_channels: supported channels for tdm mode 64 * @num_fs_mul: ARRAY_SIZE of fs_mul 65 * @num_tdm_fs_mul: ARRAY_SIZE of tdm_fs_mul 66 * @num_rates: ARRAY_SIZE of support_rates 67 * @num_tdm_rates: ARRAY_SIZE of support_tdm_rates 68 * @num_channels: ARRAY_SIZE of support_channels 69 * @num_tdm_channels: ARRAY_SIZE of support_tdm_channels 70 * @type: codec type 71 */ 72 struct imx_card_plat_data { 73 struct imx_akcodec_fs_mul *fs_mul; 74 struct imx_akcodec_tdm_fs_mul *tdm_fs_mul; 75 const u32 *support_rates; 76 const u32 *support_tdm_rates; 77 const u32 *support_channels; 78 const u32 *support_tdm_channels; 79 unsigned int num_fs_mul; 80 unsigned int num_tdm_fs_mul; 81 unsigned int num_rates; 82 unsigned int num_tdm_rates; 83 unsigned int num_channels; 84 unsigned int num_tdm_channels; 85 unsigned int num_codecs; 86 enum codec_type type; 87 }; 88 89 /* 90 * struct dai_link_data - specific info for dai link 91 * 92 * @slots: slot number 93 * @slot_width: slot width value 94 * @cpu_sysclk_id: sysclk id for cpu dai 95 * @one2one_ratio: true if mclk equal to bclk 96 */ 97 struct dai_link_data { 98 unsigned int slots; 99 unsigned int slot_width; 100 unsigned int cpu_sysclk_id; 101 bool one2one_ratio; 102 }; 103 104 /* 105 * struct imx_card_data - platform device data 106 * 107 * @plat_data: pointer of imx_card_plat_data 108 * @dapm_routes: pointer of dapm_routes 109 * @link_data: private data for dai link 110 * @card: card instance 111 * @num_dapm_routes: number of dapm_routes 112 * @asrc_rate: asrc rates 113 * @asrc_format: asrc format 114 */ 115 struct imx_card_data { 116 struct imx_card_plat_data *plat_data; 117 struct snd_soc_dapm_route *dapm_routes; 118 struct dai_link_data *link_data; 119 struct snd_soc_card card; 120 int num_dapm_routes; 121 u32 asrc_rate; 122 snd_pcm_format_t asrc_format; 123 }; 124 125 static struct imx_akcodec_fs_mul ak4458_fs_mul[] = { 126 /* Normal, < 32kHz */ 127 { .rmin = 8000, .rmax = 24000, .wmin = 256, .wmax = 1024, }, 128 /* Normal, 32kHz */ 129 { .rmin = 32000, .rmax = 32000, .wmin = 256, .wmax = 1024, }, 130 /* Normal */ 131 { .rmin = 44100, .rmax = 48000, .wmin = 256, .wmax = 768, }, 132 /* Double */ 133 { .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 512, }, 134 /* Quad */ 135 { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 256, }, 136 /* Oct */ 137 { .rmin = 352800, .rmax = 384000, .wmin = 32, .wmax = 128, }, 138 /* Hex */ 139 { .rmin = 705600, .rmax = 768000, .wmin = 16, .wmax = 64, }, 140 }; 141 142 static struct imx_akcodec_tdm_fs_mul ak4458_tdm_fs_mul[] = { 143 /* 144 * Table 13 - Audio Interface Format 145 * For TDM mode, MCLK should is set to 146 * obtained from 2 * slots * slot_width 147 */ 148 { .min = 128, .max = 128, .mul = 256 }, /* TDM128 */ 149 { .min = 256, .max = 256, .mul = 512 }, /* TDM256 */ 150 { .min = 512, .max = 512, .mul = 1024 }, /* TDM512 */ 151 }; 152 153 static struct imx_akcodec_fs_mul ak4497_fs_mul[] = { 154 /** 155 * Table 7 - mapping multiplier and speed mode 156 * Tables 8 & 9 - mapping speed mode and LRCK fs 157 */ 158 { .rmin = 8000, .rmax = 32000, .wmin = 256, .wmax = 1024, }, /* Normal, <= 32kHz */ 159 { .rmin = 44100, .rmax = 48000, .wmin = 256, .wmax = 512, }, /* Normal */ 160 { .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 256, }, /* Double */ 161 { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 128, }, /* Quad */ 162 { .rmin = 352800, .rmax = 384000, .wmin = 128, .wmax = 128, }, /* Oct */ 163 { .rmin = 705600, .rmax = 768000, .wmin = 64, .wmax = 64, }, /* Hex */ 164 }; 165 166 /* 167 * Auto MCLK selection based on LRCK for Normal Mode 168 * (Table 4 from datasheet) 169 */ 170 static struct imx_akcodec_fs_mul ak5558_fs_mul[] = { 171 { .rmin = 8000, .rmax = 32000, .wmin = 512, .wmax = 1024, }, 172 { .rmin = 44100, .rmax = 48000, .wmin = 512, .wmax = 512, }, 173 { .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 256, }, 174 { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 128, }, 175 { .rmin = 352800, .rmax = 384000, .wmin = 64, .wmax = 64, }, 176 { .rmin = 705600, .rmax = 768000, .wmin = 32, .wmax = 32, }, 177 }; 178 179 /* 180 * MCLK and BCLK selection based on TDM mode 181 * because of SAI we also add the restriction: MCLK >= 2 * BCLK 182 * (Table 9 from datasheet) 183 */ 184 static struct imx_akcodec_tdm_fs_mul ak5558_tdm_fs_mul[] = { 185 { .min = 128, .max = 128, .mul = 256 }, 186 { .min = 256, .max = 256, .mul = 512 }, 187 { .min = 512, .max = 512, .mul = 1024 }, 188 }; 189 190 static struct imx_akcodec_fs_mul cs42888_fs_mul[] = { 191 { .rmin = 8000, .rmax = 48000, .wmin = 256, .wmax = 1024, }, 192 { .rmin = 64000, .rmax = 96000, .wmin = 128, .wmax = 512, }, 193 { .rmin = 176400, .rmax = 192000, .wmin = 64, .wmax = 256, }, 194 }; 195 196 static struct imx_akcodec_tdm_fs_mul cs42888_tdm_fs_mul[] = { 197 { .min = 256, .max = 256, .mul = 256 }, 198 }; 199 200 static struct imx_akcodec_fs_mul wm8524_fs_mul[] = { 201 { .rmin = 8000, .rmax = 32000, .wmin = 256, .wmax = 1152, }, 202 { .rmin = 44100, .rmax = 48000, .wmin = 256, .wmax = 768, }, 203 { .rmin = 88200, .rmax = 96000, .wmin = 128, .wmax = 384, }, 204 { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 192, }, 205 }; 206 207 static const u32 akcodec_rates[] = { 208 8000, 11025, 16000, 22050, 32000, 44100, 48000, 88200, 209 96000, 176400, 192000, 352800, 384000, 705600, 768000, 210 }; 211 212 static const u32 akcodec_tdm_rates[] = { 213 8000, 16000, 32000, 48000, 96000, 214 }; 215 216 static const u32 ak4458_channels[] = { 217 1, 2, 4, 6, 8, 10, 12, 14, 16, 218 }; 219 220 static const u32 ak4458_tdm_channels[] = { 221 1, 2, 3, 4, 5, 6, 7, 8, 16, 222 }; 223 224 static const u32 ak5558_channels[] = { 225 1, 2, 4, 6, 8, 226 }; 227 228 static const u32 ak5558_tdm_channels[] = { 229 1, 2, 3, 4, 5, 6, 7, 8, 230 }; 231 232 static const u32 cs42888_channels[] = { 233 1, 2, 4, 6, 8, 234 }; 235 236 static const u32 cs42888_tdm_channels[] = { 237 1, 2, 3, 4, 5, 6, 7, 8, 238 }; 239 240 static const u32 wm8524_channels[] = { 241 2, 242 }; 243 244 static bool format_is_dsd(struct snd_pcm_hw_params *params) 245 { 246 snd_pcm_format_t format = params_format(params); 247 248 switch (format) { 249 case SNDRV_PCM_FORMAT_DSD_U8: 250 case SNDRV_PCM_FORMAT_DSD_U16_LE: 251 case SNDRV_PCM_FORMAT_DSD_U16_BE: 252 case SNDRV_PCM_FORMAT_DSD_U32_LE: 253 case SNDRV_PCM_FORMAT_DSD_U32_BE: 254 return true; 255 default: 256 return false; 257 } 258 } 259 260 static bool format_is_tdm(struct dai_link_data *link_data) 261 { 262 if (link_data->slots > 2) 263 return true; 264 else 265 return false; 266 } 267 268 static bool codec_is_akcodec(unsigned int type) 269 { 270 switch (type) { 271 case CODEC_AK4458: 272 case CODEC_AK4497: 273 case CODEC_AK5558: 274 case CODEC_AK5552: 275 case CODEC_CS42888: 276 case CODEC_WM8524: 277 return true; 278 default: 279 break; 280 } 281 return false; 282 } 283 284 static unsigned long akcodec_get_mclk_rate(struct snd_pcm_substream *substream, 285 struct snd_pcm_hw_params *params, 286 int slots, int slot_width) 287 { 288 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 289 struct imx_card_data *data = snd_soc_card_get_drvdata(rtd->card); 290 const struct imx_card_plat_data *plat_data = data->plat_data; 291 struct dai_link_data *link_data = &data->link_data[rtd->id]; 292 unsigned int width = slots * slot_width; 293 unsigned int rate = params_rate(params); 294 int i; 295 296 if (format_is_tdm(link_data)) { 297 for (i = 0; i < plat_data->num_tdm_fs_mul; i++) { 298 /* min = max = slots * slots_width */ 299 if (width != plat_data->tdm_fs_mul[i].min) 300 continue; 301 return rate * plat_data->tdm_fs_mul[i].mul; 302 } 303 } else { 304 for (i = 0; i < plat_data->num_fs_mul; i++) { 305 if (rate >= plat_data->fs_mul[i].rmin && 306 rate <= plat_data->fs_mul[i].rmax) { 307 width = max(width, plat_data->fs_mul[i].wmin); 308 width = min(width, plat_data->fs_mul[i].wmax); 309 310 /* Adjust SAI bclk:mclk ratio */ 311 width *= link_data->one2one_ratio ? 1 : 2; 312 313 return rate * width; 314 } 315 } 316 } 317 318 /* Let DAI manage clk frequency by default */ 319 return 0; 320 } 321 322 static int imx_aif_hw_params(struct snd_pcm_substream *substream, 323 struct snd_pcm_hw_params *params) 324 { 325 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 326 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 327 struct snd_soc_card *card = rtd->card; 328 struct imx_card_data *data = snd_soc_card_get_drvdata(card); 329 struct dai_link_data *link_data = &data->link_data[rtd->id]; 330 struct imx_card_plat_data *plat_data = data->plat_data; 331 struct device *dev = card->dev; 332 struct snd_soc_dai *codec_dai; 333 unsigned long mclk_freq; 334 unsigned int fmt = rtd->dai_link->dai_fmt; 335 unsigned int slots, slot_width; 336 int ret, i; 337 338 slots = link_data->slots; 339 slot_width = link_data->slot_width; 340 341 if (!format_is_tdm(link_data)) { 342 if (format_is_dsd(params)) { 343 slots = 1; 344 slot_width = params_width(params); 345 fmt = (rtd->dai_link->dai_fmt & ~SND_SOC_DAIFMT_FORMAT_MASK) | 346 SND_SOC_DAIFMT_PDM; 347 } else { 348 slots = 2; 349 fmt = (rtd->dai_link->dai_fmt & ~SND_SOC_DAIFMT_FORMAT_MASK) | 350 SND_SOC_DAIFMT_I2S; 351 } 352 } 353 354 ret = snd_soc_dai_set_fmt(cpu_dai, snd_soc_daifmt_clock_provider_flipped(fmt)); 355 if (ret && ret != -ENOTSUPP) { 356 dev_err(dev, "failed to set cpu dai fmt: %d\n", ret); 357 return ret; 358 } 359 ret = snd_soc_dai_set_tdm_slot(cpu_dai, 360 BIT(slots) - 1, 361 BIT(slots) - 1, 362 slots, slot_width); 363 if (ret && ret != -ENOTSUPP) { 364 dev_err(dev, "failed to set cpu dai tdm slot: %d\n", ret); 365 return ret; 366 } 367 368 for_each_rtd_codec_dais(rtd, i, codec_dai) { 369 ret = snd_soc_dai_set_fmt(codec_dai, fmt); 370 if (ret && ret != -ENOTSUPP) { 371 dev_err(dev, "failed to set codec dai[%d] fmt: %d\n", i, ret); 372 return ret; 373 } 374 375 if (format_is_tdm(link_data)) { 376 ret = snd_soc_dai_set_tdm_slot(codec_dai, 377 BIT(slots) - 1, 378 BIT(slots) - 1, 379 slots, slot_width); 380 if (ret && ret != -ENOTSUPP) { 381 dev_err(dev, "failed to set codec dai[%d] tdm slot: %d\n", i, ret); 382 return ret; 383 } 384 } 385 } 386 387 /* Set MCLK freq */ 388 if (codec_is_akcodec(plat_data->type)) 389 mclk_freq = akcodec_get_mclk_rate(substream, params, slots, slot_width); 390 else 391 mclk_freq = params_rate(params) * slots * slot_width; 392 393 if (format_is_dsd(params)) { 394 /* Use the maximum freq from DSD512 (512*44100 = 22579200) */ 395 if (!(params_rate(params) % 11025)) 396 mclk_freq = IMX_CARD_MCLK_22P5792MHZ; 397 else 398 mclk_freq = IMX_CARD_MCLK_24P576MHZ; 399 } 400 401 ret = snd_soc_dai_set_sysclk(cpu_dai, link_data->cpu_sysclk_id, mclk_freq, 402 SND_SOC_CLOCK_OUT); 403 if (ret && ret != -ENOTSUPP) { 404 dev_err(dev, "failed to set cpui dai mclk1 rate (%lu): %d\n", mclk_freq, ret); 405 return ret; 406 } 407 ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk_freq, SND_SOC_CLOCK_IN); 408 if (ret && ret != -ENOTSUPP) { 409 dev_err(dev, "failed to set codec dai mclk rate (%lu): %d\n", mclk_freq, ret); 410 return ret; 411 } 412 413 return 0; 414 } 415 416 static int ak5558_hw_rule_rate(struct snd_pcm_hw_params *p, struct snd_pcm_hw_rule *r) 417 { 418 struct dai_link_data *link_data = r->private; 419 struct snd_interval t = { .min = 8000, .max = 8000, }; 420 unsigned long mclk_freq; 421 unsigned int fs; 422 int i; 423 424 fs = hw_param_interval(p, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min; 425 fs *= link_data->slots; 426 427 /* Identify maximum supported rate */ 428 for (i = 0; i < ARRAY_SIZE(akcodec_rates); i++) { 429 mclk_freq = fs * akcodec_rates[i]; 430 /* Adjust SAI bclk:mclk ratio */ 431 mclk_freq *= link_data->one2one_ratio ? 1 : 2; 432 433 /* Skip rates for which MCLK is beyond supported value */ 434 if (mclk_freq > 36864000) 435 continue; 436 437 if (t.max < akcodec_rates[i]) 438 t.max = akcodec_rates[i]; 439 } 440 441 return snd_interval_refine(hw_param_interval(p, r->var), &t); 442 } 443 444 static int imx_aif_startup(struct snd_pcm_substream *substream) 445 { 446 struct snd_pcm_runtime *runtime = substream->runtime; 447 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 448 struct snd_soc_card *card = rtd->card; 449 struct imx_card_data *data = snd_soc_card_get_drvdata(card); 450 struct dai_link_data *link_data = &data->link_data[rtd->id]; 451 static struct snd_pcm_hw_constraint_list constraint_rates; 452 static struct snd_pcm_hw_constraint_list constraint_channels; 453 int ret = 0; 454 455 if (format_is_tdm(link_data)) { 456 constraint_channels.list = data->plat_data->support_tdm_channels; 457 constraint_channels.count = data->plat_data->num_tdm_channels; 458 constraint_rates.list = data->plat_data->support_tdm_rates; 459 constraint_rates.count = data->plat_data->num_tdm_rates; 460 } else { 461 constraint_channels.list = data->plat_data->support_channels; 462 constraint_channels.count = data->plat_data->num_channels; 463 constraint_rates.list = data->plat_data->support_rates; 464 constraint_rates.count = data->plat_data->num_rates; 465 } 466 467 if (constraint_channels.count) { 468 ret = snd_pcm_hw_constraint_list(runtime, 0, 469 SNDRV_PCM_HW_PARAM_CHANNELS, 470 &constraint_channels); 471 if (ret) 472 return ret; 473 } 474 475 if (constraint_rates.count) { 476 ret = snd_pcm_hw_constraint_list(runtime, 0, 477 SNDRV_PCM_HW_PARAM_RATE, 478 &constraint_rates); 479 if (ret) 480 return ret; 481 } 482 483 if (data->plat_data->type == CODEC_AK5558) 484 ret = snd_pcm_hw_rule_add(substream->runtime, 0, 485 SNDRV_PCM_HW_PARAM_RATE, 486 ak5558_hw_rule_rate, link_data, 487 SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); 488 489 return ret; 490 } 491 492 static void imx_aif_shutdown(struct snd_pcm_substream *substream) 493 { 494 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 495 struct snd_soc_dai *cpu_dai; 496 struct snd_soc_dai *codec_dai; 497 int i; 498 499 for_each_rtd_cpu_dais(rtd, i, cpu_dai) 500 snd_soc_dai_set_sysclk(cpu_dai, 0, 0, SND_SOC_CLOCK_OUT); 501 502 for_each_rtd_codec_dais(rtd, i, codec_dai) 503 snd_soc_dai_set_sysclk(codec_dai, 0, 0, SND_SOC_CLOCK_IN); 504 } 505 506 static const struct snd_soc_ops imx_aif_ops = { 507 .hw_params = imx_aif_hw_params, 508 .startup = imx_aif_startup, 509 .shutdown = imx_aif_shutdown, 510 }; 511 512 static const struct snd_soc_ops imx_aif_ops_be = { 513 .hw_params = imx_aif_hw_params, 514 }; 515 516 static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 517 struct snd_pcm_hw_params *params) 518 { 519 struct snd_soc_card *card = rtd->card; 520 struct imx_card_data *data = snd_soc_card_get_drvdata(card); 521 struct snd_interval *rate; 522 struct snd_mask *mask; 523 524 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 525 rate->max = data->asrc_rate; 526 rate->min = data->asrc_rate; 527 528 mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 529 snd_mask_none(mask); 530 snd_mask_set(mask, (__force unsigned int)data->asrc_format); 531 532 return 0; 533 } 534 535 static int imx_card_parse_of(struct imx_card_data *data) 536 { 537 struct imx_card_plat_data *plat_data = data->plat_data; 538 struct snd_soc_card *card = &data->card; 539 struct snd_soc_dai_link_component *dlc; 540 struct device_node *platform = NULL; 541 struct device_node *codec = NULL; 542 struct device_node *cpu = NULL; 543 struct device *dev = card->dev; 544 struct snd_soc_dai_link *link; 545 struct dai_link_data *link_data; 546 struct of_phandle_args args; 547 bool playback_only, capture_only; 548 int ret, num_links; 549 u32 asrc_fmt = 0; 550 u32 width; 551 552 ret = snd_soc_of_parse_card_name(card, "model"); 553 if (ret) { 554 dev_err(dev, "Error parsing card name: %d\n", ret); 555 return ret; 556 } 557 558 /* DAPM routes */ 559 if (of_property_present(dev->of_node, "audio-routing")) { 560 ret = snd_soc_of_parse_audio_routing(card, "audio-routing"); 561 if (ret) 562 return ret; 563 } 564 565 /* Populate links */ 566 num_links = of_get_child_count(dev->of_node); 567 568 /* Allocate the DAI link array */ 569 card->dai_link = devm_kcalloc(dev, num_links, sizeof(*link), GFP_KERNEL); 570 if (!card->dai_link) 571 return -ENOMEM; 572 573 data->link_data = devm_kcalloc(dev, num_links, sizeof(*link_data), GFP_KERNEL); 574 if (!data->link_data) 575 return -ENOMEM; 576 577 card->num_links = num_links; 578 link = card->dai_link; 579 link_data = data->link_data; 580 581 for_each_child_of_node_scoped(dev->of_node, np) { 582 dlc = devm_kzalloc(dev, 2 * sizeof(*dlc), GFP_KERNEL); 583 if (!dlc) { 584 return -ENOMEM; 585 } 586 587 link->cpus = &dlc[0]; 588 link->platforms = &dlc[1]; 589 590 link->num_cpus = 1; 591 link->num_platforms = 1; 592 593 ret = of_property_read_string(np, "link-name", &link->name); 594 if (ret) { 595 return dev_err_probe(card->dev, ret, 596 "error getting codec dai_link name\n"); 597 } 598 599 cpu = of_get_child_by_name(np, "cpu"); 600 if (!cpu) { 601 dev_err(dev, "%s: Can't find cpu DT node\n", link->name); 602 ret = -EINVAL; 603 goto err; 604 } 605 606 ret = snd_soc_of_get_dlc(cpu, &args, link->cpus, 0); 607 if (ret) { 608 dev_err_probe(card->dev, ret, 609 "%s: error getting cpu dai info\n", link->name); 610 goto err; 611 } 612 613 if (of_node_name_eq(args.np, "sai")) { 614 /* sai sysclk id */ 615 link_data->cpu_sysclk_id = FSL_SAI_CLK_MAST1; 616 617 /* sai may support mclk/bclk = 1 */ 618 if (of_property_read_bool(np, "fsl,mclk-equal-bclk")) { 619 link_data->one2one_ratio = true; 620 } else { 621 int i; 622 623 /* 624 * i.MX8MQ don't support one2one ratio, then 625 * with ak4497 only 16bit case is supported. 626 */ 627 for (i = 0; i < ARRAY_SIZE(ak4497_fs_mul); i++) { 628 if (ak4497_fs_mul[i].rmin == 705600 && 629 ak4497_fs_mul[i].rmax == 768000) { 630 ak4497_fs_mul[i].wmin = 32; 631 ak4497_fs_mul[i].wmax = 32; 632 } 633 } 634 } 635 } 636 637 link->platforms->of_node = link->cpus->of_node; 638 link->id = args.args[0]; 639 640 codec = of_get_child_by_name(np, "codec"); 641 if (codec) { 642 ret = snd_soc_of_get_dai_link_codecs(dev, codec, link); 643 if (ret < 0) { 644 dev_err_probe(dev, ret, "%s: codec dai not found\n", 645 link->name); 646 goto err; 647 } 648 649 plat_data->num_codecs = link->num_codecs; 650 651 /* Check the akcodec type */ 652 if (!strcmp(link->codecs->dai_name, "ak4458-aif")) 653 plat_data->type = CODEC_AK4458; 654 else if (!strcmp(link->codecs->dai_name, "ak4497-aif")) 655 plat_data->type = CODEC_AK4497; 656 else if (!strcmp(link->codecs->dai_name, "ak5558-aif")) 657 plat_data->type = CODEC_AK5558; 658 else if (!strcmp(link->codecs->dai_name, "ak5552-aif")) 659 plat_data->type = CODEC_AK5552; 660 else if (!strcmp(link->codecs->dai_name, "cs42888")) 661 plat_data->type = CODEC_CS42888; 662 else if (!strcmp(link->codecs->dai_name, "wm8524-hifi")) 663 plat_data->type = CODEC_WM8524; 664 665 } else { 666 link->codecs = &snd_soc_dummy_dlc; 667 link->num_codecs = 1; 668 } 669 670 if (!strncmp(link->name, "HiFi-ASRC-FE", 12)) { 671 /* DPCM frontend */ 672 link->dynamic = 1; 673 link->dpcm_merged_chan = 1; 674 675 ret = of_property_read_u32(args.np, "fsl,asrc-rate", &data->asrc_rate); 676 if (ret) { 677 dev_err(dev, "failed to get output rate\n"); 678 ret = -EINVAL; 679 goto err; 680 } 681 682 ret = of_property_read_u32(args.np, "fsl,asrc-format", &asrc_fmt); 683 data->asrc_format = (__force snd_pcm_format_t)asrc_fmt; 684 if (ret) { 685 /* Fallback to old binding; translate to asrc_format */ 686 ret = of_property_read_u32(args.np, "fsl,asrc-width", &width); 687 if (ret) { 688 dev_err(dev, 689 "failed to decide output format\n"); 690 goto err; 691 } 692 693 if (width == 24) 694 data->asrc_format = SNDRV_PCM_FORMAT_S24_LE; 695 else 696 data->asrc_format = SNDRV_PCM_FORMAT_S16_LE; 697 } 698 } else if (!strncmp(link->name, "HiFi-ASRC-BE", 12)) { 699 /* DPCM backend */ 700 /* 701 * No need to have link->platforms. alloced dlc[1] will be just wasted, 702 * but it won't leak. 703 */ 704 link->no_pcm = 1; 705 link->platforms = NULL; 706 707 link->be_hw_params_fixup = be_hw_params_fixup; 708 link->ops = &imx_aif_ops_be; 709 } else { 710 link->ops = &imx_aif_ops; 711 } 712 713 graph_util_parse_link_direction(np, &playback_only, &capture_only); 714 link->playback_only = playback_only; 715 link->capture_only = capture_only; 716 717 /* Get dai fmt */ 718 ret = simple_util_parse_daifmt(dev, np, codec, 719 NULL, &link->dai_fmt); 720 if (ret) 721 link->dai_fmt = SND_SOC_DAIFMT_NB_NF | 722 SND_SOC_DAIFMT_CBC_CFC | 723 SND_SOC_DAIFMT_I2S; 724 725 /* Get tdm slot */ 726 snd_soc_of_parse_tdm_slot(np, NULL, NULL, 727 &link_data->slots, 728 &link_data->slot_width); 729 /* default value */ 730 if (!link_data->slots) 731 link_data->slots = 2; 732 733 if (!link_data->slot_width) 734 link_data->slot_width = 32; 735 736 link->ignore_pmdown_time = 1; 737 link->stream_name = link->name; 738 link++; 739 link_data++; 740 741 of_node_put(cpu); 742 of_node_put(codec); 743 of_node_put(platform); 744 745 cpu = NULL; 746 codec = NULL; 747 platform = NULL; 748 } 749 750 return 0; 751 err: 752 of_node_put(cpu); 753 of_node_put(codec); 754 of_node_put(platform); 755 756 return ret; 757 } 758 759 static int imx_card_probe(struct platform_device *pdev) 760 { 761 struct snd_soc_dai_link *link_be = NULL, *link; 762 struct imx_card_plat_data *plat_data; 763 struct imx_card_data *data; 764 int ret, i; 765 766 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); 767 if (!data) 768 return -ENOMEM; 769 770 plat_data = devm_kzalloc(&pdev->dev, sizeof(*plat_data), GFP_KERNEL); 771 if (!plat_data) 772 return -ENOMEM; 773 774 data->plat_data = plat_data; 775 data->card.dev = &pdev->dev; 776 data->card.owner = THIS_MODULE; 777 778 dev_set_drvdata(&pdev->dev, &data->card); 779 snd_soc_card_set_drvdata(&data->card, data); 780 ret = imx_card_parse_of(data); 781 if (ret) 782 return ret; 783 784 data->num_dapm_routes = plat_data->num_codecs + 1; 785 data->dapm_routes = devm_kcalloc(&pdev->dev, data->num_dapm_routes, 786 sizeof(struct snd_soc_dapm_route), 787 GFP_KERNEL); 788 if (!data->dapm_routes) 789 return -ENOMEM; 790 791 /* configure the dapm routes */ 792 switch (plat_data->type) { 793 case CODEC_AK4458: 794 case CODEC_AK4497: 795 if (plat_data->num_codecs == 1) { 796 data->dapm_routes[0].sink = "Playback"; 797 data->dapm_routes[0].source = "CPU-Playback"; 798 i = 1; 799 } else { 800 for (i = 0; i < plat_data->num_codecs; i++) { 801 data->dapm_routes[i].sink = 802 devm_kasprintf(&pdev->dev, GFP_KERNEL, "%d %s", 803 i + 1, "Playback"); 804 if (!data->dapm_routes[i].sink) 805 return -ENOMEM; 806 data->dapm_routes[i].source = "CPU-Playback"; 807 } 808 } 809 data->dapm_routes[i].sink = "CPU-Playback"; 810 data->dapm_routes[i].source = "ASRC-Playback"; 811 break; 812 case CODEC_AK5558: 813 case CODEC_AK5552: 814 if (plat_data->num_codecs == 1) { 815 data->dapm_routes[0].sink = "CPU-Capture"; 816 data->dapm_routes[0].source = "Capture"; 817 i = 1; 818 } else { 819 for (i = 0; i < plat_data->num_codecs; i++) { 820 data->dapm_routes[i].source = 821 devm_kasprintf(&pdev->dev, GFP_KERNEL, "%d %s", 822 i + 1, "Capture"); 823 if (!data->dapm_routes[i].source) 824 return -ENOMEM; 825 data->dapm_routes[i].sink = "CPU-Capture"; 826 } 827 } 828 data->dapm_routes[i].sink = "ASRC-Capture"; 829 data->dapm_routes[i].source = "CPU-Capture"; 830 break; 831 case CODEC_CS42888: 832 data->dapm_routes[0].sink = "Playback"; 833 data->dapm_routes[0].source = "CPU-Playback"; 834 data->dapm_routes[1].sink = "CPU-Capture"; 835 data->dapm_routes[1].source = "Capture"; 836 break; 837 case CODEC_WM8524: 838 data->dapm_routes[0].sink = "Playback"; 839 data->dapm_routes[0].source = "CPU-Playback"; 840 break; 841 default: 842 break; 843 } 844 845 /* default platform data for akcodecs */ 846 if (codec_is_akcodec(plat_data->type)) { 847 plat_data->support_rates = akcodec_rates; 848 plat_data->num_rates = ARRAY_SIZE(akcodec_rates); 849 plat_data->support_tdm_rates = akcodec_tdm_rates; 850 plat_data->num_tdm_rates = ARRAY_SIZE(akcodec_tdm_rates); 851 852 switch (plat_data->type) { 853 case CODEC_AK4458: 854 plat_data->fs_mul = ak4458_fs_mul; 855 plat_data->num_fs_mul = ARRAY_SIZE(ak4458_fs_mul); 856 plat_data->tdm_fs_mul = ak4458_tdm_fs_mul; 857 plat_data->num_tdm_fs_mul = ARRAY_SIZE(ak4458_tdm_fs_mul); 858 plat_data->support_channels = ak4458_channels; 859 plat_data->num_channels = ARRAY_SIZE(ak4458_channels); 860 plat_data->support_tdm_channels = ak4458_tdm_channels; 861 plat_data->num_tdm_channels = ARRAY_SIZE(ak4458_tdm_channels); 862 break; 863 case CODEC_AK4497: 864 plat_data->fs_mul = ak4497_fs_mul; 865 plat_data->num_fs_mul = ARRAY_SIZE(ak4497_fs_mul); 866 plat_data->support_channels = ak4458_channels; 867 plat_data->num_channels = ARRAY_SIZE(ak4458_channels); 868 break; 869 case CODEC_AK5558: 870 case CODEC_AK5552: 871 plat_data->fs_mul = ak5558_fs_mul; 872 plat_data->num_fs_mul = ARRAY_SIZE(ak5558_fs_mul); 873 plat_data->tdm_fs_mul = ak5558_tdm_fs_mul; 874 plat_data->num_tdm_fs_mul = ARRAY_SIZE(ak5558_tdm_fs_mul); 875 plat_data->support_channels = ak5558_channels; 876 plat_data->num_channels = ARRAY_SIZE(ak5558_channels); 877 plat_data->support_tdm_channels = ak5558_tdm_channels; 878 plat_data->num_tdm_channels = ARRAY_SIZE(ak5558_tdm_channels); 879 break; 880 case CODEC_CS42888: 881 plat_data->fs_mul = cs42888_fs_mul; 882 plat_data->num_fs_mul = ARRAY_SIZE(cs42888_fs_mul); 883 plat_data->tdm_fs_mul = cs42888_tdm_fs_mul; 884 plat_data->num_tdm_fs_mul = ARRAY_SIZE(cs42888_tdm_fs_mul); 885 plat_data->support_channels = cs42888_channels; 886 plat_data->num_channels = ARRAY_SIZE(cs42888_channels); 887 plat_data->support_tdm_channels = cs42888_tdm_channels; 888 plat_data->num_tdm_channels = ARRAY_SIZE(cs42888_tdm_channels); 889 break; 890 case CODEC_WM8524: 891 plat_data->fs_mul = wm8524_fs_mul; 892 plat_data->num_fs_mul = ARRAY_SIZE(wm8524_fs_mul); 893 plat_data->support_channels = wm8524_channels; 894 plat_data->num_channels = ARRAY_SIZE(wm8524_channels); 895 break; 896 default: 897 break; 898 } 899 } 900 901 /* with asrc as front end */ 902 if (data->card.num_links == 3) { 903 data->card.dapm_routes = data->dapm_routes; 904 data->card.num_dapm_routes = data->num_dapm_routes; 905 for_each_card_prelinks(&data->card, i, link) { 906 if (link->no_pcm == 1) 907 link_be = link; 908 } 909 for_each_card_prelinks(&data->card, i, link) { 910 if (link->dynamic == 1 && link_be) { 911 link->playback_only = link_be->playback_only; 912 link->capture_only = link_be->capture_only; 913 } 914 } 915 } 916 917 ret = devm_snd_soc_register_card(&pdev->dev, &data->card); 918 if (ret) 919 return dev_err_probe(&pdev->dev, ret, "snd_soc_register_card failed\n"); 920 921 return 0; 922 } 923 924 static const struct of_device_id imx_card_dt_ids[] = { 925 { .compatible = "fsl,imx-audio-card", }, 926 { }, 927 }; 928 MODULE_DEVICE_TABLE(of, imx_card_dt_ids); 929 930 static struct platform_driver imx_card_driver = { 931 .driver = { 932 .name = "imx-card", 933 .pm = &snd_soc_pm_ops, 934 .of_match_table = imx_card_dt_ids, 935 }, 936 .probe = imx_card_probe, 937 }; 938 module_platform_driver(imx_card_driver); 939 940 MODULE_DESCRIPTION("Freescale i.MX ASoC Machine Driver"); 941 MODULE_LICENSE("GPL v2"); 942 MODULE_ALIAS("platform:imx-card"); 943