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/platform_data/edma.h>
  18 #include <linux/i2c.h>
  19 #include <linux/of_platform.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 #include <linux/edma.h>
  28
  29 #include "davinci-pcm.h"
  30 #include "davinci-i2s.h"
  31
  32 struct snd_soc_card_drvdata_davinci {
  33         unsigned sysclk;
  34 };
  35
  36 #define AUDIO_FORMAT (SND_SOC_DAIFMT_DSP_B | \
  37                 SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_IB_NF)
  38 static int evm_hw_params(struct snd_pcm_substream *substream,
  39                          struct snd_pcm_hw_params *params)
  40 {
  41         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  42         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  43         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  44         struct snd_soc_codec *codec = rtd->codec;
  45         struct snd_soc_card *soc_card = codec->card;
  46         int ret = 0;
  47         unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *)
  48                            snd_soc_card_get_drvdata(soc_card))->sysclk;
  49
  50         /* set codec DAI configuration */
  51         ret = snd_soc_dai_set_fmt(codec_dai, AUDIO_FORMAT);
  52         if (ret < 0)
  53                 return ret;
  54
  55         /* set cpu DAI configuration */
  56         ret = snd_soc_dai_set_fmt(cpu_dai, AUDIO_FORMAT);
  57         if (ret < 0)
  58                 return ret;
  59
  60         /* set the codec system clock */
  61         ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
  62         if (ret < 0)
  63                 return ret;
  64
  65         /* set the CPU system clock */
  66         ret = snd_soc_dai_set_sysclk(cpu_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
  67         if (ret < 0)
  68                 return ret;
  69
  70         return 0;
  71 }
  72
  73 static int evm_spdif_hw_params(struct snd_pcm_substream *substream,
  74                                 struct snd_pcm_hw_params *params)
  75 {
  76         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  77         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  78
  79         /* set cpu DAI configuration */
  80         return snd_soc_dai_set_fmt(cpu_dai, AUDIO_FORMAT);
  81 }
  82
  83 static struct snd_soc_ops evm_ops = {
  84         .hw_params = evm_hw_params,
  85 };
  86
  87 static struct snd_soc_ops evm_spdif_ops = {
  88         .hw_params = evm_spdif_hw_params,
  89 };
  90
  91 /* davinci-evm machine dapm widgets */
  92 static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
  93         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  94         SND_SOC_DAPM_LINE("Line Out", NULL),
  95         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  96         SND_SOC_DAPM_LINE("Line In", NULL),
  97 };
  98
  99 /* davinci-evm machine audio_mapnections to the codec pins */
 100 static const struct snd_soc_dapm_route audio_map[] = {
 101         /* Headphone connected to HPLOUT, HPROUT */
 102         {"Headphone Jack", NULL, "HPLOUT"},
 103         {"Headphone Jack", NULL, "HPROUT"},
 104
 105         /* Line Out connected to LLOUT, RLOUT */
 106         {"Line Out", NULL, "LLOUT"},
 107         {"Line Out", NULL, "RLOUT"},
 108
 109         /* Mic connected to (MIC3L | MIC3R) */
 110         {"MIC3L", NULL, "Mic Bias"},
 111         {"MIC3R", NULL, "Mic Bias"},
 112         {"Mic Bias", NULL, "Mic Jack"},
 113
 114         /* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
 115         {"LINE1L", NULL, "Line In"},
 116         {"LINE2L", NULL, "Line In"},
 117         {"LINE1R", NULL, "Line In"},
 118         {"LINE2R", NULL, "Line In"},
 119 };
 120
 121 /* Logic for a aic3x as connected on a davinci-evm */
 122 static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd)
 123 {
 124         struct snd_soc_codec *codec = rtd->codec;
 125         struct snd_soc_dapm_context *dapm = &codec->dapm;
 126         struct device_node *np = codec->card->dev->of_node;
 127         int ret;
 128
 129         /* Add davinci-evm specific widgets */
 130         snd_soc_dapm_new_controls(dapm, aic3x_dapm_widgets,
 131                                   ARRAY_SIZE(aic3x_dapm_widgets));
 132
 133         if (np) {
 134                 ret = snd_soc_of_parse_audio_routing(codec->card,
 135                                                         "ti,audio-routing");
 136                 if (ret)
 137                         return ret;
 138         } else {
 139                 /* Set up davinci-evm specific audio path audio_map */
 140                 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 141         }
 142
 143         /* not connected */
 144         snd_soc_dapm_disable_pin(dapm, "MONO_LOUT");
 145         snd_soc_dapm_disable_pin(dapm, "HPLCOM");
 146         snd_soc_dapm_disable_pin(dapm, "HPRCOM");
 147
 148         /* always connected */
 149         snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
 150         snd_soc_dapm_enable_pin(dapm, "Line Out");
 151         snd_soc_dapm_enable_pin(dapm, "Mic Jack");
 152         snd_soc_dapm_enable_pin(dapm, "Line In");
 153
 154         return 0;
 155 }
 156
 157 /* davinci-evm digital audio interface glue - connects codec <--> CPU */
 158 static struct snd_soc_dai_link dm6446_evm_dai = {
 159         .name = "TLV320AIC3X",
 160         .stream_name = "AIC3X",
 161         .cpu_dai_name = "davinci-mcbsp",
 162         .codec_dai_name = "tlv320aic3x-hifi",
 163         .codec_name = "tlv320aic3x-codec.1-001b",
 164         .platform_name = "davinci-mcbsp",
 165         .init = evm_aic3x_init,
 166         .ops = &evm_ops,
 167 };
 168
 169 static struct snd_soc_dai_link dm355_evm_dai = {
 170         .name = "TLV320AIC3X",
 171         .stream_name = "AIC3X",
 172         .cpu_dai_name = "davinci-mcbsp.1",
 173         .codec_dai_name = "tlv320aic3x-hifi",
 174         .codec_name = "tlv320aic3x-codec.1-001b",
 175         .platform_name = "davinci-mcbsp.1",
 176         .init = evm_aic3x_init,
 177         .ops = &evm_ops,
 178 };
 179
 180 static struct snd_soc_dai_link dm365_evm_dai = {
 181 #ifdef CONFIG_SND_DM365_AIC3X_CODEC
 182         .name = "TLV320AIC3X",
 183         .stream_name = "AIC3X",
 184         .cpu_dai_name = "davinci-mcbsp",
 185         .codec_dai_name = "tlv320aic3x-hifi",
 186         .init = evm_aic3x_init,
 187         .codec_name = "tlv320aic3x-codec.1-0018",
 188         .ops = &evm_ops,
 189         .platform_name = "davinci-mcbsp",
 190 #elif defined(CONFIG_SND_DM365_VOICE_CODEC)
 191         .name = "Voice Codec - CQ93VC",
 192         .stream_name = "CQ93",
 193         .cpu_dai_name = "davinci-vcif",
 194         .codec_dai_name = "cq93vc-hifi",
 195         .codec_name = "cq93vc-codec",
 196         .platform_name = "davinci-vcif",
 197 #endif
 198 };
 199
 200 static struct snd_soc_dai_link dm6467_evm_dai[] = {
 201         {
 202                 .name = "TLV320AIC3X",
 203                 .stream_name = "AIC3X",
 204                 .cpu_dai_name= "davinci-mcasp.0",
 205                 .codec_dai_name = "tlv320aic3x-hifi",
 206                 .platform_name = "davinci-mcasp.0",
 207                 .codec_name = "tlv320aic3x-codec.0-001a",
 208                 .init = evm_aic3x_init,
 209                 .ops = &evm_ops,
 210         },
 211         {
 212                 .name = "McASP",
 213                 .stream_name = "spdif",
 214                 .cpu_dai_name= "davinci-mcasp.1",
 215                 .codec_dai_name = "dit-hifi",
 216                 .codec_name = "spdif_dit",
 217                 .platform_name = "davinci-mcasp.1",
 218                 .ops = &evm_spdif_ops,
 219         },
 220 };
 221
 222 static struct snd_soc_dai_link da830_evm_dai = {
 223         .name = "TLV320AIC3X",
 224         .stream_name = "AIC3X",
 225         .cpu_dai_name = "davinci-mcasp.1",
 226         .codec_dai_name = "tlv320aic3x-hifi",
 227         .codec_name = "tlv320aic3x-codec.1-0018",
 228         .platform_name = "davinci-mcasp.1",
 229         .init = evm_aic3x_init,
 230         .ops = &evm_ops,
 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 };
 243
 244 /* davinci dm6446 evm audio machine driver */
 245 /*
 246  * ASP0 in DM6446 EVM is clocked by U55, as configured by
 247  * board-dm644x-evm.c using GPIOs from U18.  There are six
 248  * options; here we "know" we use a 48 KHz sample rate.
 249  */
 250 static struct snd_soc_card_drvdata_davinci dm6446_snd_soc_card_drvdata = {
 251         .sysclk = 12288000,
 252 };
 253
 254 static struct snd_soc_card dm6446_snd_soc_card_evm = {
 255         .name = "DaVinci DM6446 EVM",
 256         .owner = THIS_MODULE,
 257         .dai_link = &dm6446_evm_dai,
 258         .num_links = 1,
 259         .drvdata = &dm6446_snd_soc_card_drvdata,
 260 };
 261
 262 /* davinci dm355 evm audio machine driver */
 263 /* ASP1 on DM355 EVM is clocked by an external oscillator */
 264 static struct snd_soc_card_drvdata_davinci dm355_snd_soc_card_drvdata = {
 265         .sysclk = 27000000,
 266 };
 267
 268 static struct snd_soc_card dm355_snd_soc_card_evm = {
 269         .name = "DaVinci DM355 EVM",
 270         .owner = THIS_MODULE,
 271         .dai_link = &dm355_evm_dai,
 272         .num_links = 1,
 273         .drvdata = &dm355_snd_soc_card_drvdata,
 274 };
 275
 276 /* davinci dm365 evm audio machine driver */
 277 static struct snd_soc_card_drvdata_davinci dm365_snd_soc_card_drvdata = {
 278         .sysclk = 27000000,
 279 };
 280
 281 static struct snd_soc_card dm365_snd_soc_card_evm = {
 282         .name = "DaVinci DM365 EVM",
 283         .owner = THIS_MODULE,
 284         .dai_link = &dm365_evm_dai,
 285         .num_links = 1,
 286         .drvdata = &dm365_snd_soc_card_drvdata,
 287 };
 288
 289 /* davinci dm6467 evm audio machine driver */
 290 static struct snd_soc_card_drvdata_davinci dm6467_snd_soc_card_drvdata = {
 291         .sysclk = 27000000,
 292 };
 293
 294 static struct snd_soc_card dm6467_snd_soc_card_evm = {
 295         .name = "DaVinci DM6467 EVM",
 296         .owner = THIS_MODULE,
 297         .dai_link = dm6467_evm_dai,
 298         .num_links = ARRAY_SIZE(dm6467_evm_dai),
 299         .drvdata = &dm6467_snd_soc_card_drvdata,
 300 };
 301
 302 static struct snd_soc_card_drvdata_davinci da830_snd_soc_card_drvdata = {
 303         .sysclk = 24576000,
 304 };
 305
 306 static struct snd_soc_card da830_snd_soc_card = {
 307         .name = "DA830/OMAP-L137 EVM",
 308         .owner = THIS_MODULE,
 309         .dai_link = &da830_evm_dai,
 310         .num_links = 1,
 311         .drvdata = &da830_snd_soc_card_drvdata,
 312 };
 313
 314 static struct snd_soc_card_drvdata_davinci da850_snd_soc_card_drvdata = {
 315         .sysclk = 24576000,
 316 };
 317
 318 static struct snd_soc_card da850_snd_soc_card = {
 319         .name = "DA850/OMAP-L138 EVM",
 320         .owner = THIS_MODULE,
 321         .dai_link = &da850_evm_dai,
 322         .num_links = 1,
 323         .drvdata = &da850_snd_soc_card_drvdata,
 324 };
 325
 326 #if defined(CONFIG_OF)
 327
 328 /*
 329  * The struct is used as place holder. It will be completely
 330  * filled with data from dt node.
 331  */
 332 static struct snd_soc_dai_link evm_dai_tlv320aic3x = {
 333         .name           = "TLV320AIC3X",
 334         .stream_name    = "AIC3X",
 335         .codec_dai_name = "tlv320aic3x-hifi",
 336         .ops            = &evm_ops,
 337         .init           = evm_aic3x_init,
 338 };
 339
 340 static const struct of_device_id davinci_evm_dt_ids[] = {
 341         {
 342                 .compatible = "ti,da830-evm-audio",
 343                 .data = (void *) &evm_dai_tlv320aic3x,
 344         },
 345         { /* sentinel */ }
 346 };
 347 MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids);
 348
 349 /* davinci evm audio machine driver */
 350 static struct snd_soc_card evm_soc_card = {
 351         .owner = THIS_MODULE,
 352         .num_links = 1,
 353 };
 354
 355 static int davinci_evm_probe(struct platform_device *pdev)
 356 {
 357         struct device_node *np = pdev->dev.of_node;
 358         const struct of_device_id *match =
 359                 of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev);
 360         struct snd_soc_dai_link *dai = (struct snd_soc_dai_link *) match->data;
 361         struct snd_soc_card_drvdata_davinci *drvdata = NULL;
 362         int ret = 0;
 363
 364         evm_soc_card.dai_link = dai;
 365
 366         dai->codec_of_node = of_parse_phandle(np, "ti,audio-codec", 0);
 367         if (!dai->codec_of_node)
 368                 return -EINVAL;
 369
 370         dai->cpu_of_node = of_parse_phandle(np, "ti,mcasp-controller", 0);
 371         if (!dai->cpu_of_node)
 372                 return -EINVAL;
 373
 374         dai->platform_of_node = dai->cpu_of_node;
 375
 376         evm_soc_card.dev = &pdev->dev;
 377         ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model");
 378         if (ret)
 379                 return ret;
 380
 381         drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
 382         if (!drvdata)
 383                 return -ENOMEM;
 384
 385         ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk);
 386         if (ret < 0)
 387                 return -EINVAL;
 388
 389         snd_soc_card_set_drvdata(&evm_soc_card, drvdata);
 390         ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card);
 391
 392         if (ret)
 393                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
 394
 395         return ret;
 396 }
 397
 398 static int davinci_evm_remove(struct platform_device *pdev)
 399 {
 400         struct snd_soc_card *card = platform_get_drvdata(pdev);
 401
 402         snd_soc_unregister_card(card);
 403
 404         return 0;
 405 }
 406
 407 static struct platform_driver davinci_evm_driver = {
 408         .probe          = davinci_evm_probe,
 409         .remove         = davinci_evm_remove,
 410         .driver         = {
 411                 .name   = "davinci_evm",
 412                 .owner  = THIS_MODULE,
 413                 .of_match_table = of_match_ptr(davinci_evm_dt_ids),
 414         },
 415 };
 416 #endif
 417
 418 static struct platform_device *evm_snd_device;
 419
 420 static int __init evm_init(void)
 421 {
 422         struct snd_soc_card *evm_snd_dev_data;
 423         int index;
 424         int ret;
 425
 426         /*
 427          * If dtb is there, the devices will be created dynamically.
 428          * Only register platfrom driver structure.
 429          */
 430 #if defined(CONFIG_OF)
 431         if (of_have_populated_dt())
 432                 return platform_driver_register(&davinci_evm_driver);
 433 #endif
 434
 435         if (machine_is_davinci_evm()) {
 436                 evm_snd_dev_data = &dm6446_snd_soc_card_evm;
 437                 index = 0;
 438         } else if (machine_is_davinci_dm355_evm()) {
 439                 evm_snd_dev_data = &dm355_snd_soc_card_evm;
 440                 index = 1;
 441         } else if (machine_is_davinci_dm365_evm()) {
 442                 evm_snd_dev_data = &dm365_snd_soc_card_evm;
 443                 index = 0;
 444         } else if (machine_is_davinci_dm6467_evm()) {
 445                 evm_snd_dev_data = &dm6467_snd_soc_card_evm;
 446                 index = 0;
 447         } else if (machine_is_davinci_da830_evm()) {
 448                 evm_snd_dev_data = &da830_snd_soc_card;
 449                 index = 1;
 450         } else if (machine_is_davinci_da850_evm()) {
 451                 evm_snd_dev_data = &da850_snd_soc_card;
 452                 index = 0;
 453         } else
 454                 return -EINVAL;
 455
 456         evm_snd_device = platform_device_alloc("soc-audio", index);
 457         if (!evm_snd_device)
 458                 return -ENOMEM;
 459
 460         platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
 461         ret = platform_device_add(evm_snd_device);
 462         if (ret)
 463                 platform_device_put(evm_snd_device);
 464
 465         return ret;
 466 }
 467
 468 static void __exit evm_exit(void)
 469 {
 470 #if defined(CONFIG_OF)
 471         if (of_have_populated_dt()) {
 472                 platform_driver_unregister(&davinci_evm_driver);
 473                 return;
 474         }
 475 #endif
 476
 477         platform_device_unregister(evm_snd_device);
 478 }
 479
 480 module_init(evm_init);
 481 module_exit(evm_exit);
 482
 483 MODULE_AUTHOR("Vladimir Barinov");
 484 MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
 485 MODULE_LICENSE("GPL");