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 <linux/clk.h>
  21 #include <sound/core.h>
  22 #include <sound/pcm.h>
  23 #include <sound/soc.h>
  24
  25 #include <asm/dma.h>
  26 #include <asm/mach-types.h>
  27
  28 #include <linux/edma.h>
  29
  30 #include "davinci-pcm.h"
  31 #include "davinci-i2s.h"
  32
  33 struct snd_soc_card_drvdata_davinci {
  34         struct clk *mclk;
  35         unsigned sysclk;
  36 };
  37
  38 static int evm_startup(struct snd_pcm_substream *substream)
  39 {
  40         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  41         struct snd_soc_card *soc_card = rtd->codec->card;
  42         struct snd_soc_card_drvdata_davinci *drvdata =
  43                 snd_soc_card_get_drvdata(soc_card);
  44
  45         if (drvdata->mclk)
  46                 return clk_prepare_enable(drvdata->mclk);
  47
  48         return 0;
  49 }
  50
  51 static void evm_shutdown(struct snd_pcm_substream *substream)
  52 {
  53         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  54         struct snd_soc_card *soc_card = rtd->codec->card;
  55         struct snd_soc_card_drvdata_davinci *drvdata =
  56                 snd_soc_card_get_drvdata(soc_card);
  57
  58         if (drvdata->mclk)
  59                 clk_disable_unprepare(drvdata->mclk);
  60 }
  61
  62 static int evm_hw_params(struct snd_pcm_substream *substream,
  63                          struct snd_pcm_hw_params *params)
  64 {
  65         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  66         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  67         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  68         struct snd_soc_codec *codec = rtd->codec;
  69         struct snd_soc_card *soc_card = codec->card;
  70         int ret = 0;
  71         unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *)
  72                            snd_soc_card_get_drvdata(soc_card))->sysclk;
  73
  74         /* set the codec system clock */
  75         ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
  76         if (ret < 0)
  77                 return ret;
  78
  79         /* set the CPU system clock */
  80         ret = snd_soc_dai_set_sysclk(cpu_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
  81         if (ret < 0)
  82                 return ret;
  83
  84         return 0;
  85 }
  86
  87 static struct snd_soc_ops evm_ops = {
  88         .startup = evm_startup,
  89         .shutdown = evm_shutdown,
  90         .hw_params = evm_hw_params,
  91 };
  92
  93 /* davinci-evm machine dapm widgets */
  94 static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
  95         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  96         SND_SOC_DAPM_LINE("Line Out", NULL),
  97         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  98         SND_SOC_DAPM_LINE("Line In", NULL),
  99 };
 100
 101 /* davinci-evm machine audio_mapnections to the codec pins */
 102 static const struct snd_soc_dapm_route audio_map[] = {
 103         /* Headphone connected to HPLOUT, HPROUT */
 104         {"Headphone Jack", NULL, "HPLOUT"},
 105         {"Headphone Jack", NULL, "HPROUT"},
 106
 107         /* Line Out connected to LLOUT, RLOUT */
 108         {"Line Out", NULL, "LLOUT"},
 109         {"Line Out", NULL, "RLOUT"},
 110
 111         /* Mic connected to (MIC3L | MIC3R) */
 112         {"MIC3L", NULL, "Mic Bias"},
 113         {"MIC3R", NULL, "Mic Bias"},
 114         {"Mic Bias", NULL, "Mic Jack"},
 115
 116         /* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
 117         {"LINE1L", NULL, "Line In"},
 118         {"LINE2L", NULL, "Line In"},
 119         {"LINE1R", NULL, "Line In"},
 120         {"LINE2R", NULL, "Line In"},
 121 };
 122
 123 /* Logic for a aic3x as connected on a davinci-evm */
 124 static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd)
 125 {
 126         struct snd_soc_card *card = rtd->card;
 127         struct snd_soc_codec *codec = rtd->codec;
 128         struct device_node *np = codec->card->dev->of_node;
 129         int ret;
 130
 131         /* Add davinci-evm specific widgets */
 132         snd_soc_dapm_new_controls(&card->dapm, aic3x_dapm_widgets,
 133                                   ARRAY_SIZE(aic3x_dapm_widgets));
 134
 135         if (np) {
 136                 ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing");
 137                 if (ret)
 138                         return ret;
 139         } else {
 140                 /* Set up davinci-evm specific audio path audio_map */
 141                 snd_soc_dapm_add_routes(&card->dapm, audio_map,
 142                                         ARRAY_SIZE(audio_map));
 143         }
 144
 145         /* not connected */
 146         snd_soc_dapm_nc_pin(&codec->dapm, "MONO_LOUT");
 147         snd_soc_dapm_nc_pin(&codec->dapm, "HPLCOM");
 148         snd_soc_dapm_nc_pin(&codec->dapm, "HPRCOM");
 149
 150         return 0;
 151 }
 152
 153 /* davinci-evm digital audio interface glue - connects codec <--> CPU */
 154 static struct snd_soc_dai_link dm6446_evm_dai = {
 155         .name = "TLV320AIC3X",
 156         .stream_name = "AIC3X",
 157         .cpu_dai_name = "davinci-mcbsp",
 158         .codec_dai_name = "tlv320aic3x-hifi",
 159         .codec_name = "tlv320aic3x-codec.1-001b",
 160         .platform_name = "davinci-mcbsp",
 161         .init = evm_aic3x_init,
 162         .ops = &evm_ops,
 163         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 164                    SND_SOC_DAIFMT_IB_NF,
 165 };
 166
 167 static struct snd_soc_dai_link dm355_evm_dai = {
 168         .name = "TLV320AIC3X",
 169         .stream_name = "AIC3X",
 170         .cpu_dai_name = "davinci-mcbsp.1",
 171         .codec_dai_name = "tlv320aic3x-hifi",
 172         .codec_name = "tlv320aic3x-codec.1-001b",
 173         .platform_name = "davinci-mcbsp.1",
 174         .init = evm_aic3x_init,
 175         .ops = &evm_ops,
 176         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 177                    SND_SOC_DAIFMT_IB_NF,
 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         .codec_name = "tlv320aic3x-codec.1-0018",
 187         .platform_name = "davinci-mcbsp",
 188         .init = evm_aic3x_init,
 189         .ops = &evm_ops,
 190         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 191                    SND_SOC_DAIFMT_IB_NF,
 192 #elif defined(CONFIG_SND_DM365_VOICE_CODEC)
 193         .name = "Voice Codec - CQ93VC",
 194         .stream_name = "CQ93",
 195         .cpu_dai_name = "davinci-vcif",
 196         .codec_dai_name = "cq93vc-hifi",
 197         .codec_name = "cq93vc-codec",
 198         .platform_name = "davinci-vcif",
 199 #endif
 200 };
 201
 202 static struct snd_soc_dai_link dm6467_evm_dai[] = {
 203         {
 204                 .name = "TLV320AIC3X",
 205                 .stream_name = "AIC3X",
 206                 .cpu_dai_name= "davinci-mcasp.0",
 207                 .codec_dai_name = "tlv320aic3x-hifi",
 208                 .platform_name = "davinci-mcasp.0",
 209                 .codec_name = "tlv320aic3x-codec.0-001a",
 210                 .init = evm_aic3x_init,
 211                 .ops = &evm_ops,
 212                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 213                            SND_SOC_DAIFMT_IB_NF,
 214         },
 215         {
 216                 .name = "McASP",
 217                 .stream_name = "spdif",
 218                 .cpu_dai_name= "davinci-mcasp.1",
 219                 .codec_dai_name = "dit-hifi",
 220                 .codec_name = "spdif_dit",
 221                 .platform_name = "davinci-mcasp.1",
 222                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 223                            SND_SOC_DAIFMT_IB_NF,
 224         },
 225 };
 226
 227 static struct snd_soc_dai_link da830_evm_dai = {
 228         .name = "TLV320AIC3X",
 229         .stream_name = "AIC3X",
 230         .cpu_dai_name = "davinci-mcasp.1",
 231         .codec_dai_name = "tlv320aic3x-hifi",
 232         .codec_name = "tlv320aic3x-codec.1-0018",
 233         .platform_name = "davinci-mcasp.1",
 234         .init = evm_aic3x_init,
 235         .ops = &evm_ops,
 236         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 237                    SND_SOC_DAIFMT_IB_NF,
 238 };
 239
 240 static struct snd_soc_dai_link da850_evm_dai = {
 241         .name = "TLV320AIC3X",
 242         .stream_name = "AIC3X",
 243         .cpu_dai_name= "davinci-mcasp.0",
 244         .codec_dai_name = "tlv320aic3x-hifi",
 245         .codec_name = "tlv320aic3x-codec.1-0018",
 246         .platform_name = "davinci-mcasp.0",
 247         .init = evm_aic3x_init,
 248         .ops = &evm_ops,
 249         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 250                    SND_SOC_DAIFMT_IB_NF,
 251 };
 252
 253 /* davinci dm6446 evm audio machine driver */
 254 /*
 255  * ASP0 in DM6446 EVM is clocked by U55, as configured by
 256  * board-dm644x-evm.c using GPIOs from U18.  There are six
 257  * options; here we "know" we use a 48 KHz sample rate.
 258  */
 259 static struct snd_soc_card_drvdata_davinci dm6446_snd_soc_card_drvdata = {
 260         .sysclk = 12288000,
 261 };
 262
 263 static struct snd_soc_card dm6446_snd_soc_card_evm = {
 264         .name = "DaVinci DM6446 EVM",
 265         .owner = THIS_MODULE,
 266         .dai_link = &dm6446_evm_dai,
 267         .num_links = 1,
 268         .drvdata = &dm6446_snd_soc_card_drvdata,
 269 };
 270
 271 /* davinci dm355 evm audio machine driver */
 272 /* ASP1 on DM355 EVM is clocked by an external oscillator */
 273 static struct snd_soc_card_drvdata_davinci dm355_snd_soc_card_drvdata = {
 274         .sysclk = 27000000,
 275 };
 276
 277 static struct snd_soc_card dm355_snd_soc_card_evm = {
 278         .name = "DaVinci DM355 EVM",
 279         .owner = THIS_MODULE,
 280         .dai_link = &dm355_evm_dai,
 281         .num_links = 1,
 282         .drvdata = &dm355_snd_soc_card_drvdata,
 283 };
 284
 285 /* davinci dm365 evm audio machine driver */
 286 static struct snd_soc_card_drvdata_davinci dm365_snd_soc_card_drvdata = {
 287         .sysclk = 27000000,
 288 };
 289
 290 static struct snd_soc_card dm365_snd_soc_card_evm = {
 291         .name = "DaVinci DM365 EVM",
 292         .owner = THIS_MODULE,
 293         .dai_link = &dm365_evm_dai,
 294         .num_links = 1,
 295         .drvdata = &dm365_snd_soc_card_drvdata,
 296 };
 297
 298 /* davinci dm6467 evm audio machine driver */
 299 static struct snd_soc_card_drvdata_davinci dm6467_snd_soc_card_drvdata = {
 300         .sysclk = 27000000,
 301 };
 302
 303 static struct snd_soc_card dm6467_snd_soc_card_evm = {
 304         .name = "DaVinci DM6467 EVM",
 305         .owner = THIS_MODULE,
 306         .dai_link = dm6467_evm_dai,
 307         .num_links = ARRAY_SIZE(dm6467_evm_dai),
 308         .drvdata = &dm6467_snd_soc_card_drvdata,
 309 };
 310
 311 static struct snd_soc_card_drvdata_davinci da830_snd_soc_card_drvdata = {
 312         .sysclk = 24576000,
 313 };
 314
 315 static struct snd_soc_card da830_snd_soc_card = {
 316         .name = "DA830/OMAP-L137 EVM",
 317         .owner = THIS_MODULE,
 318         .dai_link = &da830_evm_dai,
 319         .num_links = 1,
 320         .drvdata = &da830_snd_soc_card_drvdata,
 321 };
 322
 323 static struct snd_soc_card_drvdata_davinci da850_snd_soc_card_drvdata = {
 324         .sysclk = 24576000,
 325 };
 326
 327 static struct snd_soc_card da850_snd_soc_card = {
 328         .name = "DA850/OMAP-L138 EVM",
 329         .owner = THIS_MODULE,
 330         .dai_link = &da850_evm_dai,
 331         .num_links = 1,
 332         .drvdata = &da850_snd_soc_card_drvdata,
 333 };
 334
 335 #if defined(CONFIG_OF)
 336
 337 /*
 338  * The struct is used as place holder. It will be completely
 339  * filled with data from dt node.
 340  */
 341 static struct snd_soc_dai_link evm_dai_tlv320aic3x = {
 342         .name           = "TLV320AIC3X",
 343         .stream_name    = "AIC3X",
 344         .codec_dai_name = "tlv320aic3x-hifi",
 345         .ops            = &evm_ops,
 346         .init           = evm_aic3x_init,
 347         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 348                    SND_SOC_DAIFMT_IB_NF,
 349 };
 350
 351 static const struct of_device_id davinci_evm_dt_ids[] = {
 352         {
 353                 .compatible = "ti,da830-evm-audio",
 354                 .data = (void *) &evm_dai_tlv320aic3x,
 355         },
 356         { /* sentinel */ }
 357 };
 358 MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids);
 359
 360 /* davinci evm audio machine driver */
 361 static struct snd_soc_card evm_soc_card = {
 362         .owner = THIS_MODULE,
 363         .num_links = 1,
 364 };
 365
 366 static int davinci_evm_probe(struct platform_device *pdev)
 367 {
 368         struct device_node *np = pdev->dev.of_node;
 369         const struct of_device_id *match =
 370                 of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev);
 371         struct snd_soc_dai_link *dai = (struct snd_soc_dai_link *) match->data;
 372         struct snd_soc_card_drvdata_davinci *drvdata = NULL;
 373         struct clk *mclk;
 374         int ret = 0;
 375
 376         evm_soc_card.dai_link = dai;
 377
 378         dai->codec_of_node = of_parse_phandle(np, "ti,audio-codec", 0);
 379         if (!dai->codec_of_node)
 380                 return -EINVAL;
 381
 382         dai->cpu_of_node = of_parse_phandle(np, "ti,mcasp-controller", 0);
 383         if (!dai->cpu_of_node)
 384                 return -EINVAL;
 385
 386         dai->platform_of_node = dai->cpu_of_node;
 387
 388         evm_soc_card.dev = &pdev->dev;
 389         ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model");
 390         if (ret)
 391                 return ret;
 392
 393         mclk = devm_clk_get(&pdev->dev, "mclk");
 394         if (PTR_ERR(mclk) == -EPROBE_DEFER) {
 395                 return -EPROBE_DEFER;
 396         } else if (IS_ERR(mclk)) {
 397                 dev_dbg(&pdev->dev, "mclk not found.\n");
 398                 mclk = NULL;
 399         }
 400
 401         drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
 402         if (!drvdata)
 403                 return -ENOMEM;
 404
 405         drvdata->mclk = mclk;
 406
 407         ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk);
 408
 409         if (ret < 0) {
 410                 if (!drvdata->mclk) {
 411                         dev_err(&pdev->dev,
 412                                 "No clock or clock rate defined.\n");
 413                         return -EINVAL;
 414                 }
 415                 drvdata->sysclk = clk_get_rate(drvdata->mclk);
 416         } else if (drvdata->mclk) {
 417                 unsigned int requestd_rate = drvdata->sysclk;
 418                 clk_set_rate(drvdata->mclk, drvdata->sysclk);
 419                 drvdata->sysclk = clk_get_rate(drvdata->mclk);
 420                 if (drvdata->sysclk != requestd_rate)
 421                         dev_warn(&pdev->dev,
 422                                  "Could not get requested rate %u using %u.\n",
 423                                  requestd_rate, drvdata->sysclk);
 424         }
 425
 426         snd_soc_card_set_drvdata(&evm_soc_card, drvdata);
 427         ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card);
 428
 429         if (ret)
 430                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
 431
 432         return ret;
 433 }
 434
 435 static int davinci_evm_remove(struct platform_device *pdev)
 436 {
 437         struct snd_soc_card *card = platform_get_drvdata(pdev);
 438
 439         snd_soc_unregister_card(card);
 440
 441         return 0;
 442 }
 443
 444 static struct platform_driver davinci_evm_driver = {
 445         .probe          = davinci_evm_probe,
 446         .remove         = davinci_evm_remove,
 447         .driver         = {
 448                 .name   = "davinci_evm",
 449                 .owner  = THIS_MODULE,
 450                 .pm     = &snd_soc_pm_ops,
 451                 .of_match_table = of_match_ptr(davinci_evm_dt_ids),
 452         },
 453 };
 454 #endif
 455
 456 static struct platform_device *evm_snd_device;
 457
 458 static int __init evm_init(void)
 459 {
 460         struct snd_soc_card *evm_snd_dev_data;
 461         int index;
 462         int ret;
 463
 464         /*
 465          * If dtb is there, the devices will be created dynamically.
 466          * Only register platfrom driver structure.
 467          */
 468 #if defined(CONFIG_OF)
 469         if (of_have_populated_dt())
 470                 return platform_driver_register(&davinci_evm_driver);
 471 #endif
 472
 473         if (machine_is_davinci_evm()) {
 474                 evm_snd_dev_data = &dm6446_snd_soc_card_evm;
 475                 index = 0;
 476         } else if (machine_is_davinci_dm355_evm()) {
 477                 evm_snd_dev_data = &dm355_snd_soc_card_evm;
 478                 index = 1;
 479         } else if (machine_is_davinci_dm365_evm()) {
 480                 evm_snd_dev_data = &dm365_snd_soc_card_evm;
 481                 index = 0;
 482         } else if (machine_is_davinci_dm6467_evm()) {
 483                 evm_snd_dev_data = &dm6467_snd_soc_card_evm;
 484                 index = 0;
 485         } else if (machine_is_davinci_da830_evm()) {
 486                 evm_snd_dev_data = &da830_snd_soc_card;
 487                 index = 1;
 488         } else if (machine_is_davinci_da850_evm()) {
 489                 evm_snd_dev_data = &da850_snd_soc_card;
 490                 index = 0;
 491         } else
 492                 return -EINVAL;
 493
 494         evm_snd_device = platform_device_alloc("soc-audio", index);
 495         if (!evm_snd_device)
 496                 return -ENOMEM;
 497
 498         platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
 499         ret = platform_device_add(evm_snd_device);
 500         if (ret)
 501                 platform_device_put(evm_snd_device);
 502
 503         return ret;
 504 }
 505
 506 static void __exit evm_exit(void)
 507 {
 508 #if defined(CONFIG_OF)
 509         if (of_have_populated_dt()) {
 510                 platform_driver_unregister(&davinci_evm_driver);
 511                 return;
 512         }
 513 #endif
 514
 515         platform_device_unregister(evm_snd_device);
 516 }
 517
 518 module_init(evm_init);
 519 module_exit(evm_exit);
 520
 521 MODULE_AUTHOR("Vladimir Barinov");
 522 MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
 523 MODULE_LICENSE("GPL");