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->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->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_card *soc_card = rtd->card;
  69         int ret = 0;
  70         unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *)
  71                            snd_soc_card_get_drvdata(soc_card))->sysclk;
  72
  73         /* set the codec system clock */
  74         ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
  75         if (ret < 0)
  76                 return ret;
  77
  78         /* set the CPU system clock */
  79         ret = snd_soc_dai_set_sysclk(cpu_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
  80         if (ret < 0)
  81                 return ret;
  82
  83         return 0;
  84 }
  85
  86 static struct snd_soc_ops evm_ops = {
  87         .startup = evm_startup,
  88         .shutdown = evm_shutdown,
  89         .hw_params = evm_hw_params,
  90 };
  91
  92 /* davinci-evm machine dapm widgets */
  93 static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
  94         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  95         SND_SOC_DAPM_LINE("Line Out", NULL),
  96         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  97         SND_SOC_DAPM_LINE("Line In", NULL),
  98 };
  99
 100 /* davinci-evm machine audio_mapnections to the codec pins */
 101 static const struct snd_soc_dapm_route audio_map[] = {
 102         /* Headphone connected to HPLOUT, HPROUT */
 103         {"Headphone Jack", NULL, "HPLOUT"},
 104         {"Headphone Jack", NULL, "HPROUT"},
 105
 106         /* Line Out connected to LLOUT, RLOUT */
 107         {"Line Out", NULL, "LLOUT"},
 108         {"Line Out", NULL, "RLOUT"},
 109
 110         /* Mic connected to (MIC3L | MIC3R) */
 111         {"MIC3L", NULL, "Mic Bias"},
 112         {"MIC3R", NULL, "Mic Bias"},
 113         {"Mic Bias", NULL, "Mic Jack"},
 114
 115         /* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
 116         {"LINE1L", NULL, "Line In"},
 117         {"LINE2L", NULL, "Line In"},
 118         {"LINE1R", NULL, "Line In"},
 119         {"LINE2R", NULL, "Line In"},
 120 };
 121
 122 /* Logic for a aic3x as connected on a davinci-evm */
 123 static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd)
 124 {
 125         struct snd_soc_card *card = rtd->card;
 126         struct snd_soc_codec *codec = rtd->codec;
 127         struct device_node *np = card->dev->of_node;
 128         int ret;
 129
 130         /* Add davinci-evm specific widgets */
 131         snd_soc_dapm_new_controls(&card->dapm, aic3x_dapm_widgets,
 132                                   ARRAY_SIZE(aic3x_dapm_widgets));
 133
 134         if (np) {
 135                 ret = snd_soc_of_parse_audio_routing(card, "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(&card->dapm, audio_map,
 141                                         ARRAY_SIZE(audio_map));
 142         }
 143
 144         /* not connected */
 145         snd_soc_dapm_nc_pin(&codec->dapm, "MONO_LOUT");
 146         snd_soc_dapm_nc_pin(&codec->dapm, "HPLCOM");
 147         snd_soc_dapm_nc_pin(&codec->dapm, "HPRCOM");
 148
 149         return 0;
 150 }
 151
 152 /* davinci-evm digital audio interface glue - connects codec <--> CPU */
 153 static struct snd_soc_dai_link dm6446_evm_dai = {
 154         .name = "TLV320AIC3X",
 155         .stream_name = "AIC3X",
 156         .cpu_dai_name = "davinci-mcbsp",
 157         .codec_dai_name = "tlv320aic3x-hifi",
 158         .codec_name = "tlv320aic3x-codec.1-001b",
 159         .platform_name = "davinci-mcbsp",
 160         .init = evm_aic3x_init,
 161         .ops = &evm_ops,
 162         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 163                    SND_SOC_DAIFMT_IB_NF,
 164 };
 165
 166 static struct snd_soc_dai_link dm355_evm_dai = {
 167         .name = "TLV320AIC3X",
 168         .stream_name = "AIC3X",
 169         .cpu_dai_name = "davinci-mcbsp.1",
 170         .codec_dai_name = "tlv320aic3x-hifi",
 171         .codec_name = "tlv320aic3x-codec.1-001b",
 172         .platform_name = "davinci-mcbsp.1",
 173         .init = evm_aic3x_init,
 174         .ops = &evm_ops,
 175         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 176                    SND_SOC_DAIFMT_IB_NF,
 177 };
 178
 179 static struct snd_soc_dai_link dm365_evm_dai = {
 180 #ifdef CONFIG_SND_DM365_AIC3X_CODEC
 181         .name = "TLV320AIC3X",
 182         .stream_name = "AIC3X",
 183         .cpu_dai_name = "davinci-mcbsp",
 184         .codec_dai_name = "tlv320aic3x-hifi",
 185         .codec_name = "tlv320aic3x-codec.1-0018",
 186         .platform_name = "davinci-mcbsp",
 187         .init = evm_aic3x_init,
 188         .ops = &evm_ops,
 189         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 190                    SND_SOC_DAIFMT_IB_NF,
 191 #elif defined(CONFIG_SND_DM365_VOICE_CODEC)
 192         .name = "Voice Codec - CQ93VC",
 193         .stream_name = "CQ93",
 194         .cpu_dai_name = "davinci-vcif",
 195         .codec_dai_name = "cq93vc-hifi",
 196         .codec_name = "cq93vc-codec",
 197         .platform_name = "davinci-vcif",
 198 #endif
 199 };
 200
 201 static struct snd_soc_dai_link dm6467_evm_dai[] = {
 202         {
 203                 .name = "TLV320AIC3X",
 204                 .stream_name = "AIC3X",
 205                 .cpu_dai_name= "davinci-mcasp.0",
 206                 .codec_dai_name = "tlv320aic3x-hifi",
 207                 .platform_name = "davinci-mcasp.0",
 208                 .codec_name = "tlv320aic3x-codec.0-001a",
 209                 .init = evm_aic3x_init,
 210                 .ops = &evm_ops,
 211                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 212                            SND_SOC_DAIFMT_IB_NF,
 213         },
 214         {
 215                 .name = "McASP",
 216                 .stream_name = "spdif",
 217                 .cpu_dai_name= "davinci-mcasp.1",
 218                 .codec_dai_name = "dit-hifi",
 219                 .codec_name = "spdif_dit",
 220                 .platform_name = "davinci-mcasp.1",
 221                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 222                            SND_SOC_DAIFMT_IB_NF,
 223         },
 224 };
 225
 226 static struct snd_soc_dai_link da830_evm_dai = {
 227         .name = "TLV320AIC3X",
 228         .stream_name = "AIC3X",
 229         .cpu_dai_name = "davinci-mcasp.1",
 230         .codec_dai_name = "tlv320aic3x-hifi",
 231         .codec_name = "tlv320aic3x-codec.1-0018",
 232         .platform_name = "davinci-mcasp.1",
 233         .init = evm_aic3x_init,
 234         .ops = &evm_ops,
 235         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 236                    SND_SOC_DAIFMT_IB_NF,
 237 };
 238
 239 static struct snd_soc_dai_link da850_evm_dai = {
 240         .name = "TLV320AIC3X",
 241         .stream_name = "AIC3X",
 242         .cpu_dai_name= "davinci-mcasp.0",
 243         .codec_dai_name = "tlv320aic3x-hifi",
 244         .codec_name = "tlv320aic3x-codec.1-0018",
 245         .platform_name = "davinci-mcasp.0",
 246         .init = evm_aic3x_init,
 247         .ops = &evm_ops,
 248         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 249                    SND_SOC_DAIFMT_IB_NF,
 250 };
 251
 252 /* davinci dm6446 evm audio machine driver */
 253 /*
 254  * ASP0 in DM6446 EVM is clocked by U55, as configured by
 255  * board-dm644x-evm.c using GPIOs from U18.  There are six
 256  * options; here we "know" we use a 48 KHz sample rate.
 257  */
 258 static struct snd_soc_card_drvdata_davinci dm6446_snd_soc_card_drvdata = {
 259         .sysclk = 12288000,
 260 };
 261
 262 static struct snd_soc_card dm6446_snd_soc_card_evm = {
 263         .name = "DaVinci DM6446 EVM",
 264         .owner = THIS_MODULE,
 265         .dai_link = &dm6446_evm_dai,
 266         .num_links = 1,
 267         .drvdata = &dm6446_snd_soc_card_drvdata,
 268 };
 269
 270 /* davinci dm355 evm audio machine driver */
 271 /* ASP1 on DM355 EVM is clocked by an external oscillator */
 272 static struct snd_soc_card_drvdata_davinci dm355_snd_soc_card_drvdata = {
 273         .sysclk = 27000000,
 274 };
 275
 276 static struct snd_soc_card dm355_snd_soc_card_evm = {
 277         .name = "DaVinci DM355 EVM",
 278         .owner = THIS_MODULE,
 279         .dai_link = &dm355_evm_dai,
 280         .num_links = 1,
 281         .drvdata = &dm355_snd_soc_card_drvdata,
 282 };
 283
 284 /* davinci dm365 evm audio machine driver */
 285 static struct snd_soc_card_drvdata_davinci dm365_snd_soc_card_drvdata = {
 286         .sysclk = 27000000,
 287 };
 288
 289 static struct snd_soc_card dm365_snd_soc_card_evm = {
 290         .name = "DaVinci DM365 EVM",
 291         .owner = THIS_MODULE,
 292         .dai_link = &dm365_evm_dai,
 293         .num_links = 1,
 294         .drvdata = &dm365_snd_soc_card_drvdata,
 295 };
 296
 297 /* davinci dm6467 evm audio machine driver */
 298 static struct snd_soc_card_drvdata_davinci dm6467_snd_soc_card_drvdata = {
 299         .sysclk = 27000000,
 300 };
 301
 302 static struct snd_soc_card dm6467_snd_soc_card_evm = {
 303         .name = "DaVinci DM6467 EVM",
 304         .owner = THIS_MODULE,
 305         .dai_link = dm6467_evm_dai,
 306         .num_links = ARRAY_SIZE(dm6467_evm_dai),
 307         .drvdata = &dm6467_snd_soc_card_drvdata,
 308 };
 309
 310 static struct snd_soc_card_drvdata_davinci da830_snd_soc_card_drvdata = {
 311         .sysclk = 24576000,
 312 };
 313
 314 static struct snd_soc_card da830_snd_soc_card = {
 315         .name = "DA830/OMAP-L137 EVM",
 316         .owner = THIS_MODULE,
 317         .dai_link = &da830_evm_dai,
 318         .num_links = 1,
 319         .drvdata = &da830_snd_soc_card_drvdata,
 320 };
 321
 322 static struct snd_soc_card_drvdata_davinci da850_snd_soc_card_drvdata = {
 323         .sysclk = 24576000,
 324 };
 325
 326 static struct snd_soc_card da850_snd_soc_card = {
 327         .name = "DA850/OMAP-L138 EVM",
 328         .owner = THIS_MODULE,
 329         .dai_link = &da850_evm_dai,
 330         .num_links = 1,
 331         .drvdata = &da850_snd_soc_card_drvdata,
 332 };
 333
 334 #if defined(CONFIG_OF)
 335
 336 /*
 337  * The struct is used as place holder. It will be completely
 338  * filled with data from dt node.
 339  */
 340 static struct snd_soc_dai_link evm_dai_tlv320aic3x = {
 341         .name           = "TLV320AIC3X",
 342         .stream_name    = "AIC3X",
 343         .codec_dai_name = "tlv320aic3x-hifi",
 344         .ops            = &evm_ops,
 345         .init           = evm_aic3x_init,
 346         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 347                    SND_SOC_DAIFMT_IB_NF,
 348 };
 349
 350 static const struct of_device_id davinci_evm_dt_ids[] = {
 351         {
 352                 .compatible = "ti,da830-evm-audio",
 353                 .data = (void *) &evm_dai_tlv320aic3x,
 354         },
 355         { /* sentinel */ }
 356 };
 357 MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids);
 358
 359 /* davinci evm audio machine driver */
 360 static struct snd_soc_card evm_soc_card = {
 361         .owner = THIS_MODULE,
 362         .num_links = 1,
 363 };
 364
 365 static int davinci_evm_probe(struct platform_device *pdev)
 366 {
 367         struct device_node *np = pdev->dev.of_node;
 368         const struct of_device_id *match =
 369                 of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev);
 370         struct snd_soc_dai_link *dai = (struct snd_soc_dai_link *) match->data;
 371         struct snd_soc_card_drvdata_davinci *drvdata = NULL;
 372         struct clk *mclk;
 373         int ret = 0;
 374
 375         evm_soc_card.dai_link = dai;
 376
 377         dai->codec_of_node = of_parse_phandle(np, "ti,audio-codec", 0);
 378         if (!dai->codec_of_node)
 379                 return -EINVAL;
 380
 381         dai->cpu_of_node = of_parse_phandle(np, "ti,mcasp-controller", 0);
 382         if (!dai->cpu_of_node)
 383                 return -EINVAL;
 384
 385         dai->platform_of_node = dai->cpu_of_node;
 386
 387         evm_soc_card.dev = &pdev->dev;
 388         ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model");
 389         if (ret)
 390                 return ret;
 391
 392         mclk = devm_clk_get(&pdev->dev, "mclk");
 393         if (PTR_ERR(mclk) == -EPROBE_DEFER) {
 394                 return -EPROBE_DEFER;
 395         } else if (IS_ERR(mclk)) {
 396                 dev_dbg(&pdev->dev, "mclk not found.\n");
 397                 mclk = NULL;
 398         }
 399
 400         drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
 401         if (!drvdata)
 402                 return -ENOMEM;
 403
 404         drvdata->mclk = mclk;
 405
 406         ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk);
 407
 408         if (ret < 0) {
 409                 if (!drvdata->mclk) {
 410                         dev_err(&pdev->dev,
 411                                 "No clock or clock rate defined.\n");
 412                         return -EINVAL;
 413                 }
 414                 drvdata->sysclk = clk_get_rate(drvdata->mclk);
 415         } else if (drvdata->mclk) {
 416                 unsigned int requestd_rate = drvdata->sysclk;
 417                 clk_set_rate(drvdata->mclk, drvdata->sysclk);
 418                 drvdata->sysclk = clk_get_rate(drvdata->mclk);
 419                 if (drvdata->sysclk != requestd_rate)
 420                         dev_warn(&pdev->dev,
 421                                  "Could not get requested rate %u using %u.\n",
 422                                  requestd_rate, drvdata->sysclk);
 423         }
 424
 425         snd_soc_card_set_drvdata(&evm_soc_card, drvdata);
 426         ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card);
 427
 428         if (ret)
 429                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
 430
 431         return ret;
 432 }
 433
 434 static int davinci_evm_remove(struct platform_device *pdev)
 435 {
 436         struct snd_soc_card *card = platform_get_drvdata(pdev);
 437
 438         snd_soc_unregister_card(card);
 439
 440         return 0;
 441 }
 442
 443 static struct platform_driver davinci_evm_driver = {
 444         .probe          = davinci_evm_probe,
 445         .remove         = davinci_evm_remove,
 446         .driver         = {
 447                 .name   = "davinci_evm",
 448                 .owner  = THIS_MODULE,
 449                 .pm     = &snd_soc_pm_ops,
 450                 .of_match_table = of_match_ptr(davinci_evm_dt_ids),
 451         },
 452 };
 453 #endif
 454
 455 static struct platform_device *evm_snd_device;
 456
 457 static int __init evm_init(void)
 458 {
 459         struct snd_soc_card *evm_snd_dev_data;
 460         int index;
 461         int ret;
 462
 463         /*
 464          * If dtb is there, the devices will be created dynamically.
 465          * Only register platfrom driver structure.
 466          */
 467 #if defined(CONFIG_OF)
 468         if (of_have_populated_dt())
 469                 return platform_driver_register(&davinci_evm_driver);
 470 #endif
 471
 472         if (machine_is_davinci_evm()) {
 473                 evm_snd_dev_data = &dm6446_snd_soc_card_evm;
 474                 index = 0;
 475         } else if (machine_is_davinci_dm355_evm()) {
 476                 evm_snd_dev_data = &dm355_snd_soc_card_evm;
 477                 index = 1;
 478         } else if (machine_is_davinci_dm365_evm()) {
 479                 evm_snd_dev_data = &dm365_snd_soc_card_evm;
 480                 index = 0;
 481         } else if (machine_is_davinci_dm6467_evm()) {
 482                 evm_snd_dev_data = &dm6467_snd_soc_card_evm;
 483                 index = 0;
 484         } else if (machine_is_davinci_da830_evm()) {
 485                 evm_snd_dev_data = &da830_snd_soc_card;
 486                 index = 1;
 487         } else if (machine_is_davinci_da850_evm()) {
 488                 evm_snd_dev_data = &da850_snd_soc_card;
 489                 index = 0;
 490         } else
 491                 return -EINVAL;
 492
 493         evm_snd_device = platform_device_alloc("soc-audio", index);
 494         if (!evm_snd_device)
 495                 return -ENOMEM;
 496
 497         platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
 498         ret = platform_device_add(evm_snd_device);
 499         if (ret)
 500                 platform_device_put(evm_snd_device);
 501
 502         return ret;
 503 }
 504
 505 static void __exit evm_exit(void)
 506 {
 507 #if defined(CONFIG_OF)
 508         if (of_have_populated_dt()) {
 509                 platform_driver_unregister(&davinci_evm_driver);
 510                 return;
 511         }
 512 #endif
 513
 514         platform_device_unregister(evm_snd_device);
 515 }
 516
 517 module_init(evm_init);
 518 module_exit(evm_exit);
 519
 520 MODULE_AUTHOR("Vladimir Barinov");
 521 MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
 522 MODULE_LICENSE("GPL");