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