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 snd_soc_codec *codec = rtd->codec;
 121         struct device_node *np = card->dev->of_node;
 122         int ret;
 123
 124         /* Add davinci-evm specific widgets */
 125         snd_soc_dapm_new_controls(&card->dapm, aic3x_dapm_widgets,
 126                                   ARRAY_SIZE(aic3x_dapm_widgets));
 127
 128         if (np) {
 129                 ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing");
 130                 if (ret)
 131                         return ret;
 132         } else {
 133                 /* Set up davinci-evm specific audio path audio_map */
 134                 snd_soc_dapm_add_routes(&card->dapm, audio_map,
 135                                         ARRAY_SIZE(audio_map));
 136         }
 137
 138         /* not connected */
 139         snd_soc_dapm_nc_pin(&codec->dapm, "MONO_LOUT");
 140         snd_soc_dapm_nc_pin(&codec->dapm, "HPLCOM");
 141         snd_soc_dapm_nc_pin(&codec->dapm, "HPRCOM");
 142
 143         return 0;
 144 }
 145
 146 /* davinci-evm digital audio interface glue - connects codec <--> CPU */
 147 static struct snd_soc_dai_link dm6446_evm_dai = {
 148         .name = "TLV320AIC3X",
 149         .stream_name = "AIC3X",
 150         .cpu_dai_name = "davinci-mcbsp",
 151         .codec_dai_name = "tlv320aic3x-hifi",
 152         .codec_name = "tlv320aic3x-codec.1-001b",
 153         .platform_name = "davinci-mcbsp",
 154         .init = evm_aic3x_init,
 155         .ops = &evm_ops,
 156         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 157                    SND_SOC_DAIFMT_IB_NF,
 158 };
 159
 160 static struct snd_soc_dai_link dm355_evm_dai = {
 161         .name = "TLV320AIC3X",
 162         .stream_name = "AIC3X",
 163         .cpu_dai_name = "davinci-mcbsp.1",
 164         .codec_dai_name = "tlv320aic3x-hifi",
 165         .codec_name = "tlv320aic3x-codec.1-001b",
 166         .platform_name = "davinci-mcbsp.1",
 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 };
 172
 173 static struct snd_soc_dai_link dm365_evm_dai = {
 174 #ifdef CONFIG_SND_DM365_AIC3X_CODEC
 175         .name = "TLV320AIC3X",
 176         .stream_name = "AIC3X",
 177         .cpu_dai_name = "davinci-mcbsp",
 178         .codec_dai_name = "tlv320aic3x-hifi",
 179         .codec_name = "tlv320aic3x-codec.1-0018",
 180         .platform_name = "davinci-mcbsp",
 181         .init = evm_aic3x_init,
 182         .ops = &evm_ops,
 183         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 184                    SND_SOC_DAIFMT_IB_NF,
 185 #elif defined(CONFIG_SND_DM365_VOICE_CODEC)
 186         .name = "Voice Codec - CQ93VC",
 187         .stream_name = "CQ93",
 188         .cpu_dai_name = "davinci-vcif",
 189         .codec_dai_name = "cq93vc-hifi",
 190         .codec_name = "cq93vc-codec",
 191         .platform_name = "davinci-vcif",
 192 #endif
 193 };
 194
 195 static struct snd_soc_dai_link dm6467_evm_dai[] = {
 196         {
 197                 .name = "TLV320AIC3X",
 198                 .stream_name = "AIC3X",
 199                 .cpu_dai_name= "davinci-mcasp.0",
 200                 .codec_dai_name = "tlv320aic3x-hifi",
 201                 .platform_name = "davinci-mcasp.0",
 202                 .codec_name = "tlv320aic3x-codec.0-001a",
 203                 .init = evm_aic3x_init,
 204                 .ops = &evm_ops,
 205                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 206                            SND_SOC_DAIFMT_IB_NF,
 207         },
 208         {
 209                 .name = "McASP",
 210                 .stream_name = "spdif",
 211                 .cpu_dai_name= "davinci-mcasp.1",
 212                 .codec_dai_name = "dit-hifi",
 213                 .codec_name = "spdif_dit",
 214                 .platform_name = "davinci-mcasp.1",
 215                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 216                            SND_SOC_DAIFMT_IB_NF,
 217         },
 218 };
 219
 220 static struct snd_soc_dai_link da830_evm_dai = {
 221         .name = "TLV320AIC3X",
 222         .stream_name = "AIC3X",
 223         .cpu_dai_name = "davinci-mcasp.1",
 224         .codec_dai_name = "tlv320aic3x-hifi",
 225         .codec_name = "tlv320aic3x-codec.1-0018",
 226         .platform_name = "davinci-mcasp.1",
 227         .init = evm_aic3x_init,
 228         .ops = &evm_ops,
 229         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 230                    SND_SOC_DAIFMT_IB_NF,
 231 };
 232
 233 static struct snd_soc_dai_link da850_evm_dai = {
 234         .name = "TLV320AIC3X",
 235         .stream_name = "AIC3X",
 236         .cpu_dai_name= "davinci-mcasp.0",
 237         .codec_dai_name = "tlv320aic3x-hifi",
 238         .codec_name = "tlv320aic3x-codec.1-0018",
 239         .platform_name = "davinci-mcasp.0",
 240         .init = evm_aic3x_init,
 241         .ops = &evm_ops,
 242         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 243                    SND_SOC_DAIFMT_IB_NF,
 244 };
 245
 246 /* davinci dm6446 evm audio machine driver */
 247 /*
 248  * ASP0 in DM6446 EVM is clocked by U55, as configured by
 249  * board-dm644x-evm.c using GPIOs from U18.  There are six
 250  * options; here we "know" we use a 48 KHz sample rate.
 251  */
 252 static struct snd_soc_card_drvdata_davinci dm6446_snd_soc_card_drvdata = {
 253         .sysclk = 12288000,
 254 };
 255
 256 static struct snd_soc_card dm6446_snd_soc_card_evm = {
 257         .name = "DaVinci DM6446 EVM",
 258         .owner = THIS_MODULE,
 259         .dai_link = &dm6446_evm_dai,
 260         .num_links = 1,
 261         .drvdata = &dm6446_snd_soc_card_drvdata,
 262 };
 263
 264 /* davinci dm355 evm audio machine driver */
 265 /* ASP1 on DM355 EVM is clocked by an external oscillator */
 266 static struct snd_soc_card_drvdata_davinci dm355_snd_soc_card_drvdata = {
 267         .sysclk = 27000000,
 268 };
 269
 270 static struct snd_soc_card dm355_snd_soc_card_evm = {
 271         .name = "DaVinci DM355 EVM",
 272         .owner = THIS_MODULE,
 273         .dai_link = &dm355_evm_dai,
 274         .num_links = 1,
 275         .drvdata = &dm355_snd_soc_card_drvdata,
 276 };
 277
 278 /* davinci dm365 evm audio machine driver */
 279 static struct snd_soc_card_drvdata_davinci dm365_snd_soc_card_drvdata = {
 280         .sysclk = 27000000,
 281 };
 282
 283 static struct snd_soc_card dm365_snd_soc_card_evm = {
 284         .name = "DaVinci DM365 EVM",
 285         .owner = THIS_MODULE,
 286         .dai_link = &dm365_evm_dai,
 287         .num_links = 1,
 288         .drvdata = &dm365_snd_soc_card_drvdata,
 289 };
 290
 291 /* davinci dm6467 evm audio machine driver */
 292 static struct snd_soc_card_drvdata_davinci dm6467_snd_soc_card_drvdata = {
 293         .sysclk = 27000000,
 294 };
 295
 296 static struct snd_soc_card dm6467_snd_soc_card_evm = {
 297         .name = "DaVinci DM6467 EVM",
 298         .owner = THIS_MODULE,
 299         .dai_link = dm6467_evm_dai,
 300         .num_links = ARRAY_SIZE(dm6467_evm_dai),
 301         .drvdata = &dm6467_snd_soc_card_drvdata,
 302 };
 303
 304 static struct snd_soc_card_drvdata_davinci da830_snd_soc_card_drvdata = {
 305         .sysclk = 24576000,
 306 };
 307
 308 static struct snd_soc_card da830_snd_soc_card = {
 309         .name = "DA830/OMAP-L137 EVM",
 310         .owner = THIS_MODULE,
 311         .dai_link = &da830_evm_dai,
 312         .num_links = 1,
 313         .drvdata = &da830_snd_soc_card_drvdata,
 314 };
 315
 316 static struct snd_soc_card_drvdata_davinci da850_snd_soc_card_drvdata = {
 317         .sysclk = 24576000,
 318 };
 319
 320 static struct snd_soc_card da850_snd_soc_card = {
 321         .name = "DA850/OMAP-L138 EVM",
 322         .owner = THIS_MODULE,
 323         .dai_link = &da850_evm_dai,
 324         .num_links = 1,
 325         .drvdata = &da850_snd_soc_card_drvdata,
 326 };
 327
 328 #if defined(CONFIG_OF)
 329
 330 /*
 331  * The struct is used as place holder. It will be completely
 332  * filled with data from dt node.
 333  */
 334 static struct snd_soc_dai_link evm_dai_tlv320aic3x = {
 335         .name           = "TLV320AIC3X",
 336         .stream_name    = "AIC3X",
 337         .codec_dai_name = "tlv320aic3x-hifi",
 338         .ops            = &evm_ops,
 339         .init           = evm_aic3x_init,
 340         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 341                    SND_SOC_DAIFMT_IB_NF,
 342 };
 343
 344 static const struct of_device_id davinci_evm_dt_ids[] = {
 345         {
 346                 .compatible = "ti,da830-evm-audio",
 347                 .data = (void *) &evm_dai_tlv320aic3x,
 348         },
 349         { /* sentinel */ }
 350 };
 351 MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids);
 352
 353 /* davinci evm audio machine driver */
 354 static struct snd_soc_card evm_soc_card = {
 355         .owner = THIS_MODULE,
 356         .num_links = 1,
 357 };
 358
 359 static int davinci_evm_probe(struct platform_device *pdev)
 360 {
 361         struct device_node *np = pdev->dev.of_node;
 362         const struct of_device_id *match =
 363                 of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev);
 364         struct snd_soc_dai_link *dai = (struct snd_soc_dai_link *) match->data;
 365         struct snd_soc_card_drvdata_davinci *drvdata = NULL;
 366         struct clk *mclk;
 367         int ret = 0;
 368
 369         evm_soc_card.dai_link = dai;
 370
 371         dai->codec_of_node = of_parse_phandle(np, "ti,audio-codec", 0);
 372         if (!dai->codec_of_node)
 373                 return -EINVAL;
 374
 375         dai->cpu_of_node = of_parse_phandle(np, "ti,mcasp-controller", 0);
 376         if (!dai->cpu_of_node)
 377                 return -EINVAL;
 378
 379         dai->platform_of_node = dai->cpu_of_node;
 380
 381         evm_soc_card.dev = &pdev->dev;
 382         ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model");
 383         if (ret)
 384                 return ret;
 385
 386         mclk = devm_clk_get(&pdev->dev, "mclk");
 387         if (PTR_ERR(mclk) == -EPROBE_DEFER) {
 388                 return -EPROBE_DEFER;
 389         } else if (IS_ERR(mclk)) {
 390                 dev_dbg(&pdev->dev, "mclk not found.\n");
 391                 mclk = NULL;
 392         }
 393
 394         drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
 395         if (!drvdata)
 396                 return -ENOMEM;
 397
 398         drvdata->mclk = mclk;
 399
 400         ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk);
 401
 402         if (ret < 0) {
 403                 if (!drvdata->mclk) {
 404                         dev_err(&pdev->dev,
 405                                 "No clock or clock rate defined.\n");
 406                         return -EINVAL;
 407                 }
 408                 drvdata->sysclk = clk_get_rate(drvdata->mclk);
 409         } else if (drvdata->mclk) {
 410                 unsigned int requestd_rate = drvdata->sysclk;
 411                 clk_set_rate(drvdata->mclk, drvdata->sysclk);
 412                 drvdata->sysclk = clk_get_rate(drvdata->mclk);
 413                 if (drvdata->sysclk != requestd_rate)
 414                         dev_warn(&pdev->dev,
 415                                  "Could not get requested rate %u using %u.\n",
 416                                  requestd_rate, drvdata->sysclk);
 417         }
 418
 419         snd_soc_card_set_drvdata(&evm_soc_card, drvdata);
 420         ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card);
 421
 422         if (ret)
 423                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
 424
 425         return ret;
 426 }
 427
 428 static int davinci_evm_remove(struct platform_device *pdev)
 429 {
 430         struct snd_soc_card *card = platform_get_drvdata(pdev);
 431
 432         snd_soc_unregister_card(card);
 433
 434         return 0;
 435 }
 436
 437 static struct platform_driver davinci_evm_driver = {
 438         .probe          = davinci_evm_probe,
 439         .remove         = davinci_evm_remove,
 440         .driver         = {
 441                 .name   = "davinci_evm",
 442                 .pm     = &snd_soc_pm_ops,
 443                 .of_match_table = of_match_ptr(davinci_evm_dt_ids),
 444         },
 445 };
 446 #endif
 447
 448 static struct platform_device *evm_snd_device;
 449
 450 static int __init evm_init(void)
 451 {
 452         struct snd_soc_card *evm_snd_dev_data;
 453         int index;
 454         int ret;
 455
 456         /*
 457          * If dtb is there, the devices will be created dynamically.
 458          * Only register platfrom driver structure.
 459          */
 460 #if defined(CONFIG_OF)
 461         if (of_have_populated_dt())
 462                 return platform_driver_register(&davinci_evm_driver);
 463 #endif
 464
 465         if (machine_is_davinci_evm()) {
 466                 evm_snd_dev_data = &dm6446_snd_soc_card_evm;
 467                 index = 0;
 468         } else if (machine_is_davinci_dm355_evm()) {
 469                 evm_snd_dev_data = &dm355_snd_soc_card_evm;
 470                 index = 1;
 471         } else if (machine_is_davinci_dm365_evm()) {
 472                 evm_snd_dev_data = &dm365_snd_soc_card_evm;
 473                 index = 0;
 474         } else if (machine_is_davinci_dm6467_evm()) {
 475                 evm_snd_dev_data = &dm6467_snd_soc_card_evm;
 476                 index = 0;
 477         } else if (machine_is_davinci_da830_evm()) {
 478                 evm_snd_dev_data = &da830_snd_soc_card;
 479                 index = 1;
 480         } else if (machine_is_davinci_da850_evm()) {
 481                 evm_snd_dev_data = &da850_snd_soc_card;
 482                 index = 0;
 483         } else
 484                 return -EINVAL;
 485
 486         evm_snd_device = platform_device_alloc("soc-audio", index);
 487         if (!evm_snd_device)
 488                 return -ENOMEM;
 489
 490         platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
 491         ret = platform_device_add(evm_snd_device);
 492         if (ret)
 493                 platform_device_put(evm_snd_device);
 494
 495         return ret;
 496 }
 497
 498 static void __exit evm_exit(void)
 499 {
 500 #if defined(CONFIG_OF)
 501         if (of_have_populated_dt()) {
 502                 platform_driver_unregister(&davinci_evm_driver);
 503                 return;
 504         }
 505 #endif
 506
 507         platform_device_unregister(evm_snd_device);
 508 }
 509
 510 module_init(evm_init);
 511 module_exit(evm_exit);
 512
 513 MODULE_AUTHOR("Vladimir Barinov");
 514 MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
 515 MODULE_LICENSE("GPL");