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 = 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 = rtd->codec_dai;
  58         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  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");