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_codec *codec = rtd->codec;
 127         struct snd_soc_dapm_context *dapm = &codec->dapm;
 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(dapm, aic3x_dapm_widgets,
 133                                   ARRAY_SIZE(aic3x_dapm_widgets));
 134
 135         if (np) {
 136                 ret = snd_soc_of_parse_audio_routing(codec->card,
 137                                                         "ti,audio-routing");
 138                 if (ret)
 139                         return ret;
 140         } else {
 141                 /* Set up davinci-evm specific audio path audio_map */
 142                 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 143         }
 144
 145         /* not connected */
 146         snd_soc_dapm_disable_pin(dapm, "MONO_LOUT");
 147         snd_soc_dapm_disable_pin(dapm, "HPLCOM");
 148         snd_soc_dapm_disable_pin(dapm, "HPRCOM");
 149
 150         /* always connected */
 151         snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
 152         snd_soc_dapm_enable_pin(dapm, "Line Out");
 153         snd_soc_dapm_enable_pin(dapm, "Mic Jack");
 154         snd_soc_dapm_enable_pin(dapm, "Line In");
 155
 156         return 0;
 157 }
 158
 159 /* davinci-evm digital audio interface glue - connects codec <--> CPU */
 160 static struct snd_soc_dai_link dm6446_evm_dai = {
 161         .name = "TLV320AIC3X",
 162         .stream_name = "AIC3X",
 163         .cpu_dai_name = "davinci-mcbsp",
 164         .codec_dai_name = "tlv320aic3x-hifi",
 165         .codec_name = "tlv320aic3x-codec.1-001b",
 166         .platform_name = "davinci-mcbsp",
 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 dm355_evm_dai = {
 174         .name = "TLV320AIC3X",
 175         .stream_name = "AIC3X",
 176         .cpu_dai_name = "davinci-mcbsp.1",
 177         .codec_dai_name = "tlv320aic3x-hifi",
 178         .codec_name = "tlv320aic3x-codec.1-001b",
 179         .platform_name = "davinci-mcbsp.1",
 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 };
 185
 186 static struct snd_soc_dai_link dm365_evm_dai = {
 187 #ifdef CONFIG_SND_DM365_AIC3X_CODEC
 188         .name = "TLV320AIC3X",
 189         .stream_name = "AIC3X",
 190         .cpu_dai_name = "davinci-mcbsp",
 191         .codec_dai_name = "tlv320aic3x-hifi",
 192         .codec_name = "tlv320aic3x-codec.1-0018",
 193         .platform_name = "davinci-mcbsp",
 194         .init = evm_aic3x_init,
 195         .ops = &evm_ops,
 196         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 197                    SND_SOC_DAIFMT_IB_NF,
 198 #elif defined(CONFIG_SND_DM365_VOICE_CODEC)
 199         .name = "Voice Codec - CQ93VC",
 200         .stream_name = "CQ93",
 201         .cpu_dai_name = "davinci-vcif",
 202         .codec_dai_name = "cq93vc-hifi",
 203         .codec_name = "cq93vc-codec",
 204         .platform_name = "davinci-vcif",
 205 #endif
 206 };
 207
 208 static struct snd_soc_dai_link dm6467_evm_dai[] = {
 209         {
 210                 .name = "TLV320AIC3X",
 211                 .stream_name = "AIC3X",
 212                 .cpu_dai_name= "davinci-mcasp.0",
 213                 .codec_dai_name = "tlv320aic3x-hifi",
 214                 .platform_name = "davinci-mcasp.0",
 215                 .codec_name = "tlv320aic3x-codec.0-001a",
 216                 .init = evm_aic3x_init,
 217                 .ops = &evm_ops,
 218                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 219                            SND_SOC_DAIFMT_IB_NF,
 220         },
 221         {
 222                 .name = "McASP",
 223                 .stream_name = "spdif",
 224                 .cpu_dai_name= "davinci-mcasp.1",
 225                 .codec_dai_name = "dit-hifi",
 226                 .codec_name = "spdif_dit",
 227                 .platform_name = "davinci-mcasp.1",
 228                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 229                            SND_SOC_DAIFMT_IB_NF,
 230         },
 231 };
 232
 233 static struct snd_soc_dai_link da830_evm_dai = {
 234         .name = "TLV320AIC3X",
 235         .stream_name = "AIC3X",
 236         .cpu_dai_name = "davinci-mcasp.1",
 237         .codec_dai_name = "tlv320aic3x-hifi",
 238         .codec_name = "tlv320aic3x-codec.1-0018",
 239         .platform_name = "davinci-mcasp.1",
 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 static struct snd_soc_dai_link da850_evm_dai = {
 247         .name = "TLV320AIC3X",
 248         .stream_name = "AIC3X",
 249         .cpu_dai_name= "davinci-mcasp.0",
 250         .codec_dai_name = "tlv320aic3x-hifi",
 251         .codec_name = "tlv320aic3x-codec.1-0018",
 252         .platform_name = "davinci-mcasp.0",
 253         .init = evm_aic3x_init,
 254         .ops = &evm_ops,
 255         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 256                    SND_SOC_DAIFMT_IB_NF,
 257 };
 258
 259 /* davinci dm6446 evm audio machine driver */
 260 /*
 261  * ASP0 in DM6446 EVM is clocked by U55, as configured by
 262  * board-dm644x-evm.c using GPIOs from U18.  There are six
 263  * options; here we "know" we use a 48 KHz sample rate.
 264  */
 265 static struct snd_soc_card_drvdata_davinci dm6446_snd_soc_card_drvdata = {
 266         .sysclk = 12288000,
 267 };
 268
 269 static struct snd_soc_card dm6446_snd_soc_card_evm = {
 270         .name = "DaVinci DM6446 EVM",
 271         .owner = THIS_MODULE,
 272         .dai_link = &dm6446_evm_dai,
 273         .num_links = 1,
 274         .drvdata = &dm6446_snd_soc_card_drvdata,
 275 };
 276
 277 /* davinci dm355 evm audio machine driver */
 278 /* ASP1 on DM355 EVM is clocked by an external oscillator */
 279 static struct snd_soc_card_drvdata_davinci dm355_snd_soc_card_drvdata = {
 280         .sysclk = 27000000,
 281 };
 282
 283 static struct snd_soc_card dm355_snd_soc_card_evm = {
 284         .name = "DaVinci DM355 EVM",
 285         .owner = THIS_MODULE,
 286         .dai_link = &dm355_evm_dai,
 287         .num_links = 1,
 288         .drvdata = &dm355_snd_soc_card_drvdata,
 289 };
 290
 291 /* davinci dm365 evm audio machine driver */
 292 static struct snd_soc_card_drvdata_davinci dm365_snd_soc_card_drvdata = {
 293         .sysclk = 27000000,
 294 };
 295
 296 static struct snd_soc_card dm365_snd_soc_card_evm = {
 297         .name = "DaVinci DM365 EVM",
 298         .owner = THIS_MODULE,
 299         .dai_link = &dm365_evm_dai,
 300         .num_links = 1,
 301         .drvdata = &dm365_snd_soc_card_drvdata,
 302 };
 303
 304 /* davinci dm6467 evm audio machine driver */
 305 static struct snd_soc_card_drvdata_davinci dm6467_snd_soc_card_drvdata = {
 306         .sysclk = 27000000,
 307 };
 308
 309 static struct snd_soc_card dm6467_snd_soc_card_evm = {
 310         .name = "DaVinci DM6467 EVM",
 311         .owner = THIS_MODULE,
 312         .dai_link = dm6467_evm_dai,
 313         .num_links = ARRAY_SIZE(dm6467_evm_dai),
 314         .drvdata = &dm6467_snd_soc_card_drvdata,
 315 };
 316
 317 static struct snd_soc_card_drvdata_davinci da830_snd_soc_card_drvdata = {
 318         .sysclk = 24576000,
 319 };
 320
 321 static struct snd_soc_card da830_snd_soc_card = {
 322         .name = "DA830/OMAP-L137 EVM",
 323         .owner = THIS_MODULE,
 324         .dai_link = &da830_evm_dai,
 325         .num_links = 1,
 326         .drvdata = &da830_snd_soc_card_drvdata,
 327 };
 328
 329 static struct snd_soc_card_drvdata_davinci da850_snd_soc_card_drvdata = {
 330         .sysclk = 24576000,
 331 };
 332
 333 static struct snd_soc_card da850_snd_soc_card = {
 334         .name = "DA850/OMAP-L138 EVM",
 335         .owner = THIS_MODULE,
 336         .dai_link = &da850_evm_dai,
 337         .num_links = 1,
 338         .drvdata = &da850_snd_soc_card_drvdata,
 339 };
 340
 341 #if defined(CONFIG_OF)
 342
 343 /*
 344  * The struct is used as place holder. It will be completely
 345  * filled with data from dt node.
 346  */
 347 static struct snd_soc_dai_link evm_dai_tlv320aic3x = {
 348         .name           = "TLV320AIC3X",
 349         .stream_name    = "AIC3X",
 350         .codec_dai_name = "tlv320aic3x-hifi",
 351         .ops            = &evm_ops,
 352         .init           = evm_aic3x_init,
 353         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 354                    SND_SOC_DAIFMT_IB_NF,
 355 };
 356
 357 static const struct of_device_id davinci_evm_dt_ids[] = {
 358         {
 359                 .compatible = "ti,da830-evm-audio",
 360                 .data = (void *) &evm_dai_tlv320aic3x,
 361         },
 362         { /* sentinel */ }
 363 };
 364 MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids);
 365
 366 /* davinci evm audio machine driver */
 367 static struct snd_soc_card evm_soc_card = {
 368         .owner = THIS_MODULE,
 369         .num_links = 1,
 370 };
 371
 372 static int davinci_evm_probe(struct platform_device *pdev)
 373 {
 374         struct device_node *np = pdev->dev.of_node;
 375         const struct of_device_id *match =
 376                 of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev);
 377         struct snd_soc_dai_link *dai = (struct snd_soc_dai_link *) match->data;
 378         struct snd_soc_card_drvdata_davinci *drvdata = NULL;
 379         struct clk *mclk;
 380         int ret = 0;
 381
 382         evm_soc_card.dai_link = dai;
 383
 384         dai->codec_of_node = of_parse_phandle(np, "ti,audio-codec", 0);
 385         if (!dai->codec_of_node)
 386                 return -EINVAL;
 387
 388         dai->cpu_of_node = of_parse_phandle(np, "ti,mcasp-controller", 0);
 389         if (!dai->cpu_of_node)
 390                 return -EINVAL;
 391
 392         dai->platform_of_node = dai->cpu_of_node;
 393
 394         evm_soc_card.dev = &pdev->dev;
 395         ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model");
 396         if (ret)
 397                 return ret;
 398
 399         mclk = devm_clk_get(&pdev->dev, "mclk");
 400         if (PTR_ERR(mclk) == -EPROBE_DEFER) {
 401                 return -EPROBE_DEFER;
 402         } else if (IS_ERR(mclk)) {
 403                 dev_dbg(&pdev->dev, "mclk not found.\n");
 404                 mclk = NULL;
 405         }
 406
 407         drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
 408         if (!drvdata)
 409                 return -ENOMEM;
 410
 411         drvdata->mclk = mclk;
 412
 413         ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk);
 414
 415         if (ret < 0) {
 416                 if (!drvdata->mclk) {
 417                         dev_err(&pdev->dev,
 418                                 "No clock or clock rate defined.\n");
 419                         return -EINVAL;
 420                 }
 421                 drvdata->sysclk = clk_get_rate(drvdata->mclk);
 422         } else if (drvdata->mclk) {
 423                 unsigned int requestd_rate = drvdata->sysclk;
 424                 clk_set_rate(drvdata->mclk, drvdata->sysclk);
 425                 drvdata->sysclk = clk_get_rate(drvdata->mclk);
 426                 if (drvdata->sysclk != requestd_rate)
 427                         dev_warn(&pdev->dev,
 428                                  "Could not get requested rate %u using %u.\n",
 429                                  requestd_rate, drvdata->sysclk);
 430         }
 431
 432         snd_soc_card_set_drvdata(&evm_soc_card, drvdata);
 433         ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card);
 434
 435         if (ret)
 436                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
 437
 438         return ret;
 439 }
 440
 441 static int davinci_evm_remove(struct platform_device *pdev)
 442 {
 443         struct snd_soc_card *card = platform_get_drvdata(pdev);
 444
 445         snd_soc_unregister_card(card);
 446
 447         return 0;
 448 }
 449
 450 static struct platform_driver davinci_evm_driver = {
 451         .probe          = davinci_evm_probe,
 452         .remove         = davinci_evm_remove,
 453         .driver         = {
 454                 .name   = "davinci_evm",
 455                 .owner  = THIS_MODULE,
 456                 .pm     = &snd_soc_pm_ops,
 457                 .of_match_table = of_match_ptr(davinci_evm_dt_ids),
 458         },
 459 };
 460 #endif
 461
 462 static struct platform_device *evm_snd_device;
 463
 464 static int __init evm_init(void)
 465 {
 466         struct snd_soc_card *evm_snd_dev_data;
 467         int index;
 468         int ret;
 469
 470         /*
 471          * If dtb is there, the devices will be created dynamically.
 472          * Only register platfrom driver structure.
 473          */
 474 #if defined(CONFIG_OF)
 475         if (of_have_populated_dt())
 476                 return platform_driver_register(&davinci_evm_driver);
 477 #endif
 478
 479         if (machine_is_davinci_evm()) {
 480                 evm_snd_dev_data = &dm6446_snd_soc_card_evm;
 481                 index = 0;
 482         } else if (machine_is_davinci_dm355_evm()) {
 483                 evm_snd_dev_data = &dm355_snd_soc_card_evm;
 484                 index = 1;
 485         } else if (machine_is_davinci_dm365_evm()) {
 486                 evm_snd_dev_data = &dm365_snd_soc_card_evm;
 487                 index = 0;
 488         } else if (machine_is_davinci_dm6467_evm()) {
 489                 evm_snd_dev_data = &dm6467_snd_soc_card_evm;
 490                 index = 0;
 491         } else if (machine_is_davinci_da830_evm()) {
 492                 evm_snd_dev_data = &da830_snd_soc_card;
 493                 index = 1;
 494         } else if (machine_is_davinci_da850_evm()) {
 495                 evm_snd_dev_data = &da850_snd_soc_card;
 496                 index = 0;
 497         } else
 498                 return -EINVAL;
 499
 500         evm_snd_device = platform_device_alloc("soc-audio", index);
 501         if (!evm_snd_device)
 502                 return -ENOMEM;
 503
 504         platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
 505         ret = platform_device_add(evm_snd_device);
 506         if (ret)
 507                 platform_device_put(evm_snd_device);
 508
 509         return ret;
 510 }
 511
 512 static void __exit evm_exit(void)
 513 {
 514 #if defined(CONFIG_OF)
 515         if (of_have_populated_dt()) {
 516                 platform_driver_unregister(&davinci_evm_driver);
 517                 return;
 518         }
 519 #endif
 520
 521         platform_device_unregister(evm_snd_device);
 522 }
 523
 524 module_init(evm_init);
 525 module_exit(evm_exit);
 526
 527 MODULE_AUTHOR("Vladimir Barinov");
 528 MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
 529 MODULE_LICENSE("GPL");