sound/soc/ti/davinci-evm.c

   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 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");