sound/soc/davinci/davinci-evm.c

   1 /*
   2  * ASoC driver for TI DAVINCI EVM platform
   3  *
   4  * Author:      Vladimir Barinov, <vbarinov@embeddedalley.com>
   5  * Copyright:   (C) 2007 MontaVista Software, Inc., <source@mvista.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/timer.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/i2c.h>
  18 #include <linux/of_platform.h>
  19 #include <linux/clk.h>
  20 #include <sound/core.h>
  21 #include <sound/pcm.h>
  22 #include <sound/soc.h>
  23
  24 #include <asm/dma.h>
  25 #include <asm/mach-types.h>
  26
  27 struct snd_soc_card_drvdata_davinci {
  28         struct clk *mclk;
  29         unsigned sysclk;
  30 };
  31
  32 static int evm_startup(struct snd_pcm_substream *substream)
  33 {
  34         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  35         struct snd_soc_card *soc_card = rtd->card;
  36         struct snd_soc_card_drvdata_davinci *drvdata =
  37                 snd_soc_card_get_drvdata(soc_card);
  38
  39         if (drvdata->mclk)
  40                 return clk_prepare_enable(drvdata->mclk);
  41
  42         return 0;
  43 }
  44
  45 static void evm_shutdown(struct snd_pcm_substream *substream)
  46 {
  47         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  48         struct snd_soc_card *soc_card = rtd->card;
  49         struct snd_soc_card_drvdata_davinci *drvdata =
  50                 snd_soc_card_get_drvdata(soc_card);
  51
  52         if (drvdata->mclk)
  53                 clk_disable_unprepare(drvdata->mclk);
  54 }
  55
  56 static int evm_hw_params(struct snd_pcm_substream *substream,
  57                          struct snd_pcm_hw_params *params)
  58 {
  59         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  60         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  61         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  62         struct snd_soc_card *soc_card = rtd->card;
  63         int ret = 0;
  64         unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *)
  65                            snd_soc_card_get_drvdata(soc_card))->sysclk;
  66
  67         /* set the codec system clock */
  68         ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
  69         if (ret < 0)
  70                 return ret;
  71
  72         /* set the CPU system clock */
  73         ret = snd_soc_dai_set_sysclk(cpu_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
  74         if (ret < 0)
  75                 return ret;
  76
  77         return 0;
  78 }
  79
  80 static struct snd_soc_ops evm_ops = {
  81         .startup = evm_startup,
  82         .shutdown = evm_shutdown,
  83         .hw_params = evm_hw_params,
  84 };
  85
  86 /* davinci-evm machine dapm widgets */
  87 static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
  88         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  89         SND_SOC_DAPM_LINE("Line Out", NULL),
  90         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  91         SND_SOC_DAPM_LINE("Line In", NULL),
  92 };
  93
  94 /* davinci-evm machine audio_mapnections to the codec pins */
  95 static const struct snd_soc_dapm_route audio_map[] = {
  96         /* Headphone connected to HPLOUT, HPROUT */
  97         {"Headphone Jack", NULL, "HPLOUT"},
  98         {"Headphone Jack", NULL, "HPROUT"},
  99
 100         /* Line Out connected to LLOUT, RLOUT */
 101         {"Line Out", NULL, "LLOUT"},
 102         {"Line Out", NULL, "RLOUT"},
 103
 104         /* Mic connected to (MIC3L | MIC3R) */
 105         {"MIC3L", NULL, "Mic Bias"},
 106         {"MIC3R", NULL, "Mic Bias"},
 107         {"Mic Bias", NULL, "Mic Jack"},
 108
 109         /* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
 110         {"LINE1L", NULL, "Line In"},
 111         {"LINE2L", NULL, "Line In"},
 112         {"LINE1R", NULL, "Line In"},
 113         {"LINE2R", NULL, "Line In"},
 114 };
 115
 116 /* Logic for a aic3x as connected on a davinci-evm */
 117 static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd)
 118 {
 119         struct snd_soc_card *card = rtd->card;
 120         struct device_node *np = card->dev->of_node;
 121         int ret;
 122
 123         /* Add davinci-evm specific widgets */
 124         snd_soc_dapm_new_controls(&card->dapm, aic3x_dapm_widgets,
 125                                   ARRAY_SIZE(aic3x_dapm_widgets));
 126
 127         if (np) {
 128                 ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing");
 129                 if (ret)
 130                         return ret;
 131         } else {
 132                 /* Set up davinci-evm specific audio path audio_map */
 133                 snd_soc_dapm_add_routes(&card->dapm, audio_map,
 134                                         ARRAY_SIZE(audio_map));
 135         }
 136
 137         /* not connected */
 138         snd_soc_dapm_nc_pin(&card->dapm, "MONO_LOUT");
 139         snd_soc_dapm_nc_pin(&card->dapm, "HPLCOM");
 140         snd_soc_dapm_nc_pin(&card->dapm, "HPRCOM");
 141
 142         return 0;
 143 }
 144
 145 /* davinci-evm digital audio interface glue - connects codec <--> CPU */
 146 static struct snd_soc_dai_link dm6446_evm_dai = {
 147         .name = "TLV320AIC3X",
 148         .stream_name = "AIC3X",
 149         .cpu_dai_name = "davinci-mcbsp",
 150         .codec_dai_name = "tlv320aic3x-hifi",
 151         .codec_name = "tlv320aic3x-codec.1-001b",
 152         .platform_name = "davinci-mcbsp",
 153         .init = evm_aic3x_init,
 154         .ops = &evm_ops,
 155         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 156                    SND_SOC_DAIFMT_IB_NF,
 157 };
 158
 159 static struct snd_soc_dai_link dm355_evm_dai = {
 160         .name = "TLV320AIC3X",
 161         .stream_name = "AIC3X",
 162         .cpu_dai_name = "davinci-mcbsp.1",
 163         .codec_dai_name = "tlv320aic3x-hifi",
 164         .codec_name = "tlv320aic3x-codec.1-001b",
 165         .platform_name = "davinci-mcbsp.1",
 166         .init = evm_aic3x_init,
 167         .ops = &evm_ops,
 168         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 169                    SND_SOC_DAIFMT_IB_NF,
 170 };
 171
 172 static struct snd_soc_dai_link dm365_evm_dai = {
 173 #ifdef CONFIG_SND_DM365_AIC3X_CODEC
 174         .name = "TLV320AIC3X",
 175         .stream_name = "AIC3X",
 176         .cpu_dai_name = "davinci-mcbsp",
 177         .codec_dai_name = "tlv320aic3x-hifi",
 178         .codec_name = "tlv320aic3x-codec.1-0018",
 179         .platform_name = "davinci-mcbsp",
 180         .init = evm_aic3x_init,
 181         .ops = &evm_ops,
 182         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 183                    SND_SOC_DAIFMT_IB_NF,
 184 #elif defined(CONFIG_SND_DM365_VOICE_CODEC)
 185         .name = "Voice Codec - CQ93VC",
 186         .stream_name = "CQ93",
 187         .cpu_dai_name = "davinci-vcif",
 188         .codec_dai_name = "cq93vc-hifi",
 189         .codec_name = "cq93vc-codec",
 190         .platform_name = "davinci-vcif",
 191 #endif
 192 };
 193
 194 static struct snd_soc_dai_link dm6467_evm_dai[] = {
 195         {
 196                 .name = "TLV320AIC3X",
 197                 .stream_name = "AIC3X",
 198                 .cpu_dai_name= "davinci-mcasp.0",
 199                 .codec_dai_name = "tlv320aic3x-hifi",
 200                 .platform_name = "davinci-mcasp.0",
 201                 .codec_name = "tlv320aic3x-codec.0-001a",
 202                 .init = evm_aic3x_init,
 203                 .ops = &evm_ops,
 204                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 205                            SND_SOC_DAIFMT_IB_NF,
 206         },
 207         {
 208                 .name = "McASP",
 209                 .stream_name = "spdif",
 210                 .cpu_dai_name= "davinci-mcasp.1",
 211                 .codec_dai_name = "dit-hifi",
 212                 .codec_name = "spdif_dit",
 213                 .platform_name = "davinci-mcasp.1",
 214                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 215                            SND_SOC_DAIFMT_IB_NF,
 216         },
 217 };
 218
 219 static struct snd_soc_dai_link da830_evm_dai = {
 220         .name = "TLV320AIC3X",
 221         .stream_name = "AIC3X",
 222         .cpu_dai_name = "davinci-mcasp.1",
 223         .codec_dai_name = "tlv320aic3x-hifi",
 224         .codec_name = "tlv320aic3x-codec.1-0018",
 225         .platform_name = "davinci-mcasp.1",
 226         .init = evm_aic3x_init,
 227         .ops = &evm_ops,
 228         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 229                    SND_SOC_DAIFMT_IB_NF,
 230 };
 231
 232 static struct snd_soc_dai_link da850_evm_dai = {
 233         .name = "TLV320AIC3X",
 234         .stream_name = "AIC3X",
 235         .cpu_dai_name= "davinci-mcasp.0",
 236         .codec_dai_name = "tlv320aic3x-hifi",
 237         .codec_name = "tlv320aic3x-codec.1-0018",
 238         .platform_name = "davinci-mcasp.0",
 239         .init = evm_aic3x_init,
 240         .ops = &evm_ops,
 241         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 242                    SND_SOC_DAIFMT_IB_NF,
 243 };
 244
 245 /* davinci dm6446 evm audio machine driver */
 246 /*
 247  * ASP0 in DM6446 EVM is clocked by U55, as configured by
 248  * board-dm644x-evm.c using GPIOs from U18.  There are six
 249  * options; here we "know" we use a 48 KHz sample rate.
 250  */
 251 static struct snd_soc_card_drvdata_davinci dm6446_snd_soc_card_drvdata = {
 252         .sysclk = 12288000,
 253 };
 254
 255 static struct snd_soc_card dm6446_snd_soc_card_evm = {
 256         .name = "DaVinci DM6446 EVM",
 257         .owner = THIS_MODULE,
 258         .dai_link = &dm6446_evm_dai,
 259         .num_links = 1,
 260         .drvdata = &dm6446_snd_soc_card_drvdata,
 261 };
 262
 263 /* davinci dm355 evm audio machine driver */
 264 /* ASP1 on DM355 EVM is clocked by an external oscillator */
 265 static struct snd_soc_card_drvdata_davinci dm355_snd_soc_card_drvdata = {
 266         .sysclk = 27000000,
 267 };
 268
 269 static struct snd_soc_card dm355_snd_soc_card_evm = {
 270         .name = "DaVinci DM355 EVM",
 271         .owner = THIS_MODULE,
 272         .dai_link = &dm355_evm_dai,
 273         .num_links = 1,
 274         .drvdata = &dm355_snd_soc_card_drvdata,
 275 };
 276
 277 /* davinci dm365 evm audio machine driver */
 278 static struct snd_soc_card_drvdata_davinci dm365_snd_soc_card_drvdata = {
 279         .sysclk = 27000000,
 280 };
 281
 282 static struct snd_soc_card dm365_snd_soc_card_evm = {
 283         .name = "DaVinci DM365 EVM",
 284         .owner = THIS_MODULE,
 285         .dai_link = &dm365_evm_dai,
 286         .num_links = 1,
 287         .drvdata = &dm365_snd_soc_card_drvdata,
 288 };
 289
 290 /* davinci dm6467 evm audio machine driver */
 291 static struct snd_soc_card_drvdata_davinci dm6467_snd_soc_card_drvdata = {
 292         .sysclk = 27000000,
 293 };
 294
 295 static struct snd_soc_card dm6467_snd_soc_card_evm = {
 296         .name = "DaVinci DM6467 EVM",
 297         .owner = THIS_MODULE,
 298         .dai_link = dm6467_evm_dai,
 299         .num_links = ARRAY_SIZE(dm6467_evm_dai),
 300         .drvdata = &dm6467_snd_soc_card_drvdata,
 301 };
 302
 303 static struct snd_soc_card_drvdata_davinci da830_snd_soc_card_drvdata = {
 304         .sysclk = 24576000,
 305 };
 306
 307 static struct snd_soc_card da830_snd_soc_card = {
 308         .name = "DA830/OMAP-L137 EVM",
 309         .owner = THIS_MODULE,
 310         .dai_link = &da830_evm_dai,
 311         .num_links = 1,
 312         .drvdata = &da830_snd_soc_card_drvdata,
 313 };
 314
 315 static struct snd_soc_card_drvdata_davinci da850_snd_soc_card_drvdata = {
 316         .sysclk = 24576000,
 317 };
 318
 319 static struct snd_soc_card da850_snd_soc_card = {
 320         .name = "DA850/OMAP-L138 EVM",
 321         .owner = THIS_MODULE,
 322         .dai_link = &da850_evm_dai,
 323         .num_links = 1,
 324         .drvdata = &da850_snd_soc_card_drvdata,
 325 };
 326
 327 #if defined(CONFIG_OF)
 328
 329 /*
 330  * The struct is used as place holder. It will be completely
 331  * filled with data from dt node.
 332  */
 333 static struct snd_soc_dai_link evm_dai_tlv320aic3x = {
 334         .name           = "TLV320AIC3X",
 335         .stream_name    = "AIC3X",
 336         .codec_dai_name = "tlv320aic3x-hifi",
 337         .ops            = &evm_ops,
 338         .init           = evm_aic3x_init,
 339         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 340                    SND_SOC_DAIFMT_IB_NF,
 341 };
 342
 343 static const struct of_device_id davinci_evm_dt_ids[] = {
 344         {
 345                 .compatible = "ti,da830-evm-audio",
 346                 .data = (void *) &evm_dai_tlv320aic3x,
 347         },
 348         { /* sentinel */ }
 349 };
 350 MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids);
 351
 352 /* davinci evm audio machine driver */
 353 static struct snd_soc_card evm_soc_card = {
 354         .owner = THIS_MODULE,
 355         .num_links = 1,
 356 };
 357
 358 static int davinci_evm_probe(struct platform_device *pdev)
 359 {
 360         struct device_node *np = pdev->dev.of_node;
 361         const struct of_device_id *match =
 362                 of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev);
 363         struct snd_soc_dai_link *dai = (struct snd_soc_dai_link *) match->data;
 364         struct snd_soc_card_drvdata_davinci *drvdata = NULL;
 365         struct clk *mclk;
 366         int ret = 0;
 367
 368         evm_soc_card.dai_link = dai;
 369
 370         dai->codec_of_node = of_parse_phandle(np, "ti,audio-codec", 0);
 371         if (!dai->codec_of_node)
 372                 return -EINVAL;
 373
 374         dai->cpu_of_node = of_parse_phandle(np, "ti,mcasp-controller", 0);
 375         if (!dai->cpu_of_node)
 376                 return -EINVAL;
 377
 378         dai->platform_of_node = dai->cpu_of_node;
 379
 380         evm_soc_card.dev = &pdev->dev;
 381         ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model");
 382         if (ret)
 383                 return ret;
 384
 385         mclk = devm_clk_get(&pdev->dev, "mclk");
 386         if (PTR_ERR(mclk) == -EPROBE_DEFER) {
 387                 return -EPROBE_DEFER;
 388         } else if (IS_ERR(mclk)) {
 389                 dev_dbg(&pdev->dev, "mclk not found.\n");
 390                 mclk = NULL;
 391         }
 392
 393         drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
 394         if (!drvdata)
 395                 return -ENOMEM;
 396
 397         drvdata->mclk = mclk;
 398
 399         ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk);
 400
 401         if (ret < 0) {
 402                 if (!drvdata->mclk) {
 403                         dev_err(&pdev->dev,
 404                                 "No clock or clock rate defined.\n");
 405                         return -EINVAL;
 406                 }
 407                 drvdata->sysclk = clk_get_rate(drvdata->mclk);
 408         } else if (drvdata->mclk) {
 409                 unsigned int requestd_rate = drvdata->sysclk;
 410                 clk_set_rate(drvdata->mclk, drvdata->sysclk);
 411                 drvdata->sysclk = clk_get_rate(drvdata->mclk);
 412                 if (drvdata->sysclk != requestd_rate)
 413                         dev_warn(&pdev->dev,
 414                                  "Could not get requested rate %u using %u.\n",
 415                                  requestd_rate, drvdata->sysclk);
 416         }
 417
 418         snd_soc_card_set_drvdata(&evm_soc_card, drvdata);
 419         ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card);
 420
 421         if (ret)
 422                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
 423
 424         return ret;
 425 }
 426
 427 static struct platform_driver davinci_evm_driver = {
 428         .probe          = davinci_evm_probe,
 429         .driver         = {
 430                 .name   = "davinci_evm",
 431                 .pm     = &snd_soc_pm_ops,
 432                 .of_match_table = of_match_ptr(davinci_evm_dt_ids),
 433         },
 434 };
 435 #endif
 436
 437 static struct platform_device *evm_snd_device;
 438
 439 static int __init evm_init(void)
 440 {
 441         struct snd_soc_card *evm_snd_dev_data;
 442         int index;
 443         int ret;
 444
 445         /*
 446          * If dtb is there, the devices will be created dynamically.
 447          * Only register platfrom driver structure.
 448          */
 449 #if defined(CONFIG_OF)
 450         if (of_have_populated_dt())
 451                 return platform_driver_register(&davinci_evm_driver);
 452 #endif
 453
 454         if (machine_is_davinci_evm()) {
 455                 evm_snd_dev_data = &dm6446_snd_soc_card_evm;
 456                 index = 0;
 457         } else if (machine_is_davinci_dm355_evm()) {
 458                 evm_snd_dev_data = &dm355_snd_soc_card_evm;
 459                 index = 1;
 460         } else if (machine_is_davinci_dm365_evm()) {
 461                 evm_snd_dev_data = &dm365_snd_soc_card_evm;
 462                 index = 0;
 463         } else if (machine_is_davinci_dm6467_evm()) {
 464                 evm_snd_dev_data = &dm6467_snd_soc_card_evm;
 465                 index = 0;
 466         } else if (machine_is_davinci_da830_evm()) {
 467                 evm_snd_dev_data = &da830_snd_soc_card;
 468                 index = 1;
 469         } else if (machine_is_davinci_da850_evm()) {
 470                 evm_snd_dev_data = &da850_snd_soc_card;
 471                 index = 0;
 472         } else
 473                 return -EINVAL;
 474
 475         evm_snd_device = platform_device_alloc("soc-audio", index);
 476         if (!evm_snd_device)
 477                 return -ENOMEM;
 478
 479         platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
 480         ret = platform_device_add(evm_snd_device);
 481         if (ret)
 482                 platform_device_put(evm_snd_device);
 483
 484         return ret;
 485 }
 486
 487 static void __exit evm_exit(void)
 488 {
 489 #if defined(CONFIG_OF)
 490         if (of_have_populated_dt()) {
 491                 platform_driver_unregister(&davinci_evm_driver);
 492                 return;
 493         }
 494 #endif
 495
 496         platform_device_unregister(evm_snd_device);
 497 }
 498
 499 module_init(evm_init);
 500 module_exit(evm_exit);
 501
 502 MODULE_AUTHOR("Vladimir Barinov");
 503 MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
 504 MODULE_LICENSE("GPL");