1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * ASoC driver for TI DAVINCI EVM platform 4 * 5 * Author: Vladimir Barinov, <vbarinov@embeddedalley.com> 6 * Copyright: (C) 2007 MontaVista Software, Inc., <source@mvista.com> 7 */ 8 9 #include <linux/module.h> 10 #include <linux/moduleparam.h> 11 #include <linux/timer.h> 12 #include <linux/interrupt.h> 13 #include <linux/platform_device.h> 14 #include <linux/i2c.h> 15 #include <linux/of_platform.h> 16 #include <linux/clk.h> 17 #include <sound/core.h> 18 #include <sound/pcm.h> 19 #include <sound/soc.h> 20 21 #include <asm/dma.h> 22 #include <asm/mach-types.h> 23 24 struct snd_soc_card_drvdata_davinci { 25 struct clk *mclk; 26 unsigned sysclk; 27 }; 28 29 static int evm_startup(struct snd_pcm_substream *substream) 30 { 31 struct snd_soc_pcm_runtime *rtd = substream->private_data; 32 struct snd_soc_card *soc_card = rtd->card; 33 struct snd_soc_card_drvdata_davinci *drvdata = 34 snd_soc_card_get_drvdata(soc_card); 35 36 if (drvdata->mclk) 37 return clk_prepare_enable(drvdata->mclk); 38 39 return 0; 40 } 41 42 static void evm_shutdown(struct snd_pcm_substream *substream) 43 { 44 struct snd_soc_pcm_runtime *rtd = substream->private_data; 45 struct snd_soc_card *soc_card = rtd->card; 46 struct snd_soc_card_drvdata_davinci *drvdata = 47 snd_soc_card_get_drvdata(soc_card); 48 49 if (drvdata->mclk) 50 clk_disable_unprepare(drvdata->mclk); 51 } 52 53 static int evm_hw_params(struct snd_pcm_substream *substream, 54 struct snd_pcm_hw_params *params) 55 { 56 struct snd_soc_pcm_runtime *rtd = substream->private_data; 57 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 58 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 59 struct snd_soc_card *soc_card = rtd->card; 60 int ret = 0; 61 unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *) 62 snd_soc_card_get_drvdata(soc_card))->sysclk; 63 64 /* set the codec system clock */ 65 ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT); 66 if (ret < 0) 67 return ret; 68 69 /* set the CPU system clock */ 70 ret = snd_soc_dai_set_sysclk(cpu_dai, 0, sysclk, SND_SOC_CLOCK_OUT); 71 if (ret < 0 && ret != -ENOTSUPP) 72 return ret; 73 74 return 0; 75 } 76 77 static struct snd_soc_ops evm_ops = { 78 .startup = evm_startup, 79 .shutdown = evm_shutdown, 80 .hw_params = evm_hw_params, 81 }; 82 83 /* davinci-evm machine dapm widgets */ 84 static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = { 85 SND_SOC_DAPM_HP("Headphone Jack", NULL), 86 SND_SOC_DAPM_LINE("Line Out", NULL), 87 SND_SOC_DAPM_MIC("Mic Jack", NULL), 88 SND_SOC_DAPM_LINE("Line In", NULL), 89 }; 90 91 /* davinci-evm machine audio_mapnections to the codec pins */ 92 static const struct snd_soc_dapm_route audio_map[] = { 93 /* Headphone connected to HPLOUT, HPROUT */ 94 {"Headphone Jack", NULL, "HPLOUT"}, 95 {"Headphone Jack", NULL, "HPROUT"}, 96 97 /* Line Out connected to LLOUT, RLOUT */ 98 {"Line Out", NULL, "LLOUT"}, 99 {"Line Out", NULL, "RLOUT"}, 100 101 /* Mic connected to (MIC3L | MIC3R) */ 102 {"MIC3L", NULL, "Mic Bias"}, 103 {"MIC3R", NULL, "Mic Bias"}, 104 {"Mic Bias", NULL, "Mic Jack"}, 105 106 /* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */ 107 {"LINE1L", NULL, "Line In"}, 108 {"LINE2L", NULL, "Line In"}, 109 {"LINE1R", NULL, "Line In"}, 110 {"LINE2R", NULL, "Line In"}, 111 }; 112 113 /* Logic for a aic3x as connected on a davinci-evm */ 114 static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd) 115 { 116 struct snd_soc_card *card = rtd->card; 117 struct device_node *np = card->dev->of_node; 118 int ret; 119 120 /* Add davinci-evm specific widgets */ 121 snd_soc_dapm_new_controls(&card->dapm, aic3x_dapm_widgets, 122 ARRAY_SIZE(aic3x_dapm_widgets)); 123 124 if (np) { 125 ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing"); 126 if (ret) 127 return ret; 128 } else { 129 /* Set up davinci-evm specific audio path audio_map */ 130 snd_soc_dapm_add_routes(&card->dapm, audio_map, 131 ARRAY_SIZE(audio_map)); 132 } 133 134 /* not connected */ 135 snd_soc_dapm_nc_pin(&card->dapm, "MONO_LOUT"); 136 snd_soc_dapm_nc_pin(&card->dapm, "HPLCOM"); 137 snd_soc_dapm_nc_pin(&card->dapm, "HPRCOM"); 138 139 return 0; 140 } 141 142 /* davinci-evm digital audio interface glue - connects codec <--> CPU */ 143 SND_SOC_DAILINK_DEFS(dm6446, 144 DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcbsp")), 145 DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-001b", 146 "tlv320aic3x-hifi")), 147 DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcbsp"))); 148 149 static struct snd_soc_dai_link dm6446_evm_dai = { 150 .name = "TLV320AIC3X", 151 .stream_name = "AIC3X", 152 .init = evm_aic3x_init, 153 .ops = &evm_ops, 154 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | 155 SND_SOC_DAIFMT_IB_NF, 156 SND_SOC_DAILINK_REG(dm6446), 157 }; 158 159 SND_SOC_DAILINK_DEFS(dm355, 160 DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcbsp.1")), 161 DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-001b", 162 "tlv320aic3x-hifi")), 163 DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcbsp.1"))); 164 165 static struct snd_soc_dai_link dm355_evm_dai = { 166 .name = "TLV320AIC3X", 167 .stream_name = "AIC3X", 168 .init = evm_aic3x_init, 169 .ops = &evm_ops, 170 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | 171 SND_SOC_DAIFMT_IB_NF, 172 SND_SOC_DAILINK_REG(dm355), 173 }; 174 175 #ifdef CONFIG_SND_SOC_DM365_AIC3X_CODEC 176 SND_SOC_DAILINK_DEFS(dm365, 177 DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcbsp")), 178 DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-0018", 179 "tlv320aic3x-hifi")), 180 DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcbsp"))); 181 #elif defined(CONFIG_SND_SOC_DM365_VOICE_CODEC) 182 SND_SOC_DAILINK_DEFS(dm365, 183 DAILINK_COMP_ARRAY(COMP_CPU("davinci-vcif")), 184 DAILINK_COMP_ARRAY(COMP_CODEC("cq93vc-codec", "cq93vc-hifi")), 185 DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-vcif"))); 186 #endif 187 188 static struct snd_soc_dai_link dm365_evm_dai = { 189 #ifdef CONFIG_SND_SOC_DM365_AIC3X_CODEC 190 .name = "TLV320AIC3X", 191 .stream_name = "AIC3X", 192 .init = evm_aic3x_init, 193 .ops = &evm_ops, 194 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | 195 SND_SOC_DAIFMT_IB_NF, 196 SND_SOC_DAILINK_REG(dm365), 197 #elif defined(CONFIG_SND_SOC_DM365_VOICE_CODEC) 198 .name = "Voice Codec - CQ93VC", 199 .stream_name = "CQ93", 200 SND_SOC_DAILINK_REG(dm365), 201 #endif 202 }; 203 204 SND_SOC_DAILINK_DEFS(dm6467_aic3x, 205 DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.0")), 206 DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.0-001a", 207 "tlv320aic3x-hifi")), 208 DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.0"))); 209 210 SND_SOC_DAILINK_DEFS(dm6467_spdif, 211 DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.1")), 212 DAILINK_COMP_ARRAY(COMP_CODEC("spdif_dit", "dit-hifi")), 213 DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.1"))); 214 215 static struct snd_soc_dai_link dm6467_evm_dai[] = { 216 { 217 .name = "TLV320AIC3X", 218 .stream_name = "AIC3X", 219 .init = evm_aic3x_init, 220 .ops = &evm_ops, 221 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | 222 SND_SOC_DAIFMT_IB_NF, 223 SND_SOC_DAILINK_REG(dm6467_aic3x), 224 }, 225 { 226 .name = "McASP", 227 .stream_name = "spdif", 228 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | 229 SND_SOC_DAIFMT_IB_NF, 230 SND_SOC_DAILINK_REG(dm6467_spdif), 231 }, 232 }; 233 234 SND_SOC_DAILINK_DEFS(da830, 235 DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.1")), 236 DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-0018", 237 "tlv320aic3x-hifi")), 238 DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.1"))); 239 240 static struct snd_soc_dai_link da830_evm_dai = { 241 .name = "TLV320AIC3X", 242 .stream_name = "AIC3X", 243 .init = evm_aic3x_init, 244 .ops = &evm_ops, 245 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | 246 SND_SOC_DAIFMT_IB_NF, 247 SND_SOC_DAILINK_REG(da830), 248 }; 249 250 SND_SOC_DAILINK_DEFS(da850, 251 DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.0")), 252 DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-0018", 253 "tlv320aic3x-hifi")), 254 DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.0"))); 255 256 static struct snd_soc_dai_link da850_evm_dai = { 257 .name = "TLV320AIC3X", 258 .stream_name = "AIC3X", 259 .init = evm_aic3x_init, 260 .ops = &evm_ops, 261 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | 262 SND_SOC_DAIFMT_IB_NF, 263 SND_SOC_DAILINK_REG(da850), 264 }; 265 266 /* davinci dm6446 evm audio machine driver */ 267 /* 268 * ASP0 in DM6446 EVM is clocked by U55, as configured by 269 * board-dm644x-evm.c using GPIOs from U18. There are six 270 * options; here we "know" we use a 48 KHz sample rate. 271 */ 272 static struct snd_soc_card_drvdata_davinci dm6446_snd_soc_card_drvdata = { 273 .sysclk = 12288000, 274 }; 275 276 static struct snd_soc_card dm6446_snd_soc_card_evm = { 277 .name = "DaVinci DM6446 EVM", 278 .owner = THIS_MODULE, 279 .dai_link = &dm6446_evm_dai, 280 .num_links = 1, 281 .drvdata = &dm6446_snd_soc_card_drvdata, 282 }; 283 284 /* davinci dm355 evm audio machine driver */ 285 /* ASP1 on DM355 EVM is clocked by an external oscillator */ 286 static struct snd_soc_card_drvdata_davinci dm355_snd_soc_card_drvdata = { 287 .sysclk = 27000000, 288 }; 289 290 static struct snd_soc_card dm355_snd_soc_card_evm = { 291 .name = "DaVinci DM355 EVM", 292 .owner = THIS_MODULE, 293 .dai_link = &dm355_evm_dai, 294 .num_links = 1, 295 .drvdata = &dm355_snd_soc_card_drvdata, 296 }; 297 298 /* davinci dm365 evm audio machine driver */ 299 static struct snd_soc_card_drvdata_davinci dm365_snd_soc_card_drvdata = { 300 .sysclk = 27000000, 301 }; 302 303 static struct snd_soc_card dm365_snd_soc_card_evm = { 304 .name = "DaVinci DM365 EVM", 305 .owner = THIS_MODULE, 306 .dai_link = &dm365_evm_dai, 307 .num_links = 1, 308 .drvdata = &dm365_snd_soc_card_drvdata, 309 }; 310 311 /* davinci dm6467 evm audio machine driver */ 312 static struct snd_soc_card_drvdata_davinci dm6467_snd_soc_card_drvdata = { 313 .sysclk = 27000000, 314 }; 315 316 static struct snd_soc_card dm6467_snd_soc_card_evm = { 317 .name = "DaVinci DM6467 EVM", 318 .owner = THIS_MODULE, 319 .dai_link = dm6467_evm_dai, 320 .num_links = ARRAY_SIZE(dm6467_evm_dai), 321 .drvdata = &dm6467_snd_soc_card_drvdata, 322 }; 323 324 static struct snd_soc_card_drvdata_davinci da830_snd_soc_card_drvdata = { 325 .sysclk = 24576000, 326 }; 327 328 static struct snd_soc_card da830_snd_soc_card = { 329 .name = "DA830/OMAP-L137 EVM", 330 .owner = THIS_MODULE, 331 .dai_link = &da830_evm_dai, 332 .num_links = 1, 333 .drvdata = &da830_snd_soc_card_drvdata, 334 }; 335 336 static struct snd_soc_card_drvdata_davinci da850_snd_soc_card_drvdata = { 337 .sysclk = 24576000, 338 }; 339 340 static struct snd_soc_card da850_snd_soc_card = { 341 .name = "DA850/OMAP-L138 EVM", 342 .owner = THIS_MODULE, 343 .dai_link = &da850_evm_dai, 344 .num_links = 1, 345 .drvdata = &da850_snd_soc_card_drvdata, 346 }; 347 348 #if defined(CONFIG_OF) 349 350 /* 351 * The struct is used as place holder. It will be completely 352 * filled with data from dt node. 353 */ 354 SND_SOC_DAILINK_DEFS(evm, 355 DAILINK_COMP_ARRAY(COMP_EMPTY()), 356 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "tlv320aic3x-hifi")), 357 DAILINK_COMP_ARRAY(COMP_EMPTY())); 358 359 static struct snd_soc_dai_link evm_dai_tlv320aic3x = { 360 .name = "TLV320AIC3X", 361 .stream_name = "AIC3X", 362 .ops = &evm_ops, 363 .init = evm_aic3x_init, 364 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | 365 SND_SOC_DAIFMT_IB_NF, 366 SND_SOC_DAILINK_REG(evm), 367 }; 368 369 static const struct of_device_id davinci_evm_dt_ids[] = { 370 { 371 .compatible = "ti,da830-evm-audio", 372 .data = (void *) &evm_dai_tlv320aic3x, 373 }, 374 { /* sentinel */ } 375 }; 376 MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids); 377 378 /* davinci evm audio machine driver */ 379 static struct snd_soc_card evm_soc_card = { 380 .owner = THIS_MODULE, 381 .num_links = 1, 382 }; 383 384 static int davinci_evm_probe(struct platform_device *pdev) 385 { 386 struct device_node *np = pdev->dev.of_node; 387 const struct of_device_id *match; 388 struct snd_soc_dai_link *dai; 389 struct snd_soc_card_drvdata_davinci *drvdata = NULL; 390 struct clk *mclk; 391 int ret = 0; 392 393 match = of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev); 394 if (!match) { 395 dev_err(&pdev->dev, "Error: No device match found\n"); 396 return -ENODEV; 397 } 398 399 dai = (struct snd_soc_dai_link *) match->data; 400 401 evm_soc_card.dai_link = dai; 402 403 dai->codecs->of_node = of_parse_phandle(np, "ti,audio-codec", 0); 404 if (!dai->codecs->of_node) 405 return -EINVAL; 406 407 dai->cpus->of_node = of_parse_phandle(np, "ti,mcasp-controller", 0); 408 if (!dai->cpus->of_node) 409 return -EINVAL; 410 411 dai->platforms->of_node = dai->cpus->of_node; 412 413 evm_soc_card.dev = &pdev->dev; 414 ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model"); 415 if (ret) 416 return ret; 417 418 mclk = devm_clk_get(&pdev->dev, "mclk"); 419 if (PTR_ERR(mclk) == -EPROBE_DEFER) { 420 return -EPROBE_DEFER; 421 } else if (IS_ERR(mclk)) { 422 dev_dbg(&pdev->dev, "mclk not found.\n"); 423 mclk = NULL; 424 } 425 426 drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL); 427 if (!drvdata) 428 return -ENOMEM; 429 430 drvdata->mclk = mclk; 431 432 ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk); 433 434 if (ret < 0) { 435 if (!drvdata->mclk) { 436 dev_err(&pdev->dev, 437 "No clock or clock rate defined.\n"); 438 return -EINVAL; 439 } 440 drvdata->sysclk = clk_get_rate(drvdata->mclk); 441 } else if (drvdata->mclk) { 442 unsigned int requestd_rate = drvdata->sysclk; 443 clk_set_rate(drvdata->mclk, drvdata->sysclk); 444 drvdata->sysclk = clk_get_rate(drvdata->mclk); 445 if (drvdata->sysclk != requestd_rate) 446 dev_warn(&pdev->dev, 447 "Could not get requested rate %u using %u.\n", 448 requestd_rate, drvdata->sysclk); 449 } 450 451 snd_soc_card_set_drvdata(&evm_soc_card, drvdata); 452 ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card); 453 454 if (ret) 455 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); 456 457 return ret; 458 } 459 460 static struct platform_driver davinci_evm_driver = { 461 .probe = davinci_evm_probe, 462 .driver = { 463 .name = "davinci_evm", 464 .pm = &snd_soc_pm_ops, 465 .of_match_table = of_match_ptr(davinci_evm_dt_ids), 466 }, 467 }; 468 #endif 469 470 static struct platform_device *evm_snd_device; 471 472 static int __init evm_init(void) 473 { 474 struct snd_soc_card *evm_snd_dev_data; 475 int index; 476 int ret; 477 478 /* 479 * If dtb is there, the devices will be created dynamically. 480 * Only register platfrom driver structure. 481 */ 482 #if defined(CONFIG_OF) 483 if (of_have_populated_dt()) 484 return platform_driver_register(&davinci_evm_driver); 485 #endif 486 487 if (machine_is_davinci_evm()) { 488 evm_snd_dev_data = &dm6446_snd_soc_card_evm; 489 index = 0; 490 } else if (machine_is_davinci_dm355_evm()) { 491 evm_snd_dev_data = &dm355_snd_soc_card_evm; 492 index = 1; 493 } else if (machine_is_davinci_dm365_evm()) { 494 evm_snd_dev_data = &dm365_snd_soc_card_evm; 495 index = 0; 496 } else if (machine_is_davinci_dm6467_evm()) { 497 evm_snd_dev_data = &dm6467_snd_soc_card_evm; 498 index = 0; 499 } else if (machine_is_davinci_da830_evm()) { 500 evm_snd_dev_data = &da830_snd_soc_card; 501 index = 1; 502 } else if (machine_is_davinci_da850_evm()) { 503 evm_snd_dev_data = &da850_snd_soc_card; 504 index = 0; 505 } else 506 return -EINVAL; 507 508 evm_snd_device = platform_device_alloc("soc-audio", index); 509 if (!evm_snd_device) 510 return -ENOMEM; 511 512 platform_set_drvdata(evm_snd_device, evm_snd_dev_data); 513 ret = platform_device_add(evm_snd_device); 514 if (ret) 515 platform_device_put(evm_snd_device); 516 517 return ret; 518 } 519 520 static void __exit evm_exit(void) 521 { 522 #if defined(CONFIG_OF) 523 if (of_have_populated_dt()) { 524 platform_driver_unregister(&davinci_evm_driver); 525 return; 526 } 527 #endif 528 529 platform_device_unregister(evm_snd_device); 530 } 531 532 module_init(evm_init); 533 module_exit(evm_exit); 534 535 MODULE_AUTHOR("Vladimir Barinov"); 536 MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver"); 537 MODULE_LICENSE("GPL"); 538