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 #include "davinci-mcasp.h"
  32
  33 struct snd_soc_card_drvdata_davinci {
  34         unsigned sysclk;
  35 };
  36
  37 #define AUDIO_FORMAT (SND_SOC_DAIFMT_DSP_B | \
  38                 SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_IB_NF)
  39 static int evm_hw_params(struct snd_pcm_substream *substream,
  40                          struct snd_pcm_hw_params *params)
  41 {
  42         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  43         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  44         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  45         struct snd_soc_codec *codec = rtd->codec;
  46         struct snd_soc_card *soc_card = codec->card;
  47         int ret = 0;
  48         unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *)
  49                            snd_soc_card_get_drvdata(soc_card))->sysclk;
  50
  51         /* set codec DAI configuration */
  52         ret = snd_soc_dai_set_fmt(codec_dai, AUDIO_FORMAT);
  53         if (ret < 0)
  54                 return ret;
  55
  56         /* set cpu DAI configuration */
  57         ret = snd_soc_dai_set_fmt(cpu_dai, AUDIO_FORMAT);
  58         if (ret < 0)
  59                 return ret;
  60
  61         /* set the codec system clock */
  62         ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
  63         if (ret < 0)
  64                 return ret;
  65
  66         /* set the CPU system clock */
  67         ret = snd_soc_dai_set_sysclk(cpu_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
  68         if (ret < 0)
  69                 return ret;
  70
  71         return 0;
  72 }
  73
  74 static int evm_spdif_hw_params(struct snd_pcm_substream *substream,
  75                                 struct snd_pcm_hw_params *params)
  76 {
  77         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  78         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  79
  80         /* set cpu DAI configuration */
  81         return snd_soc_dai_set_fmt(cpu_dai, AUDIO_FORMAT);
  82 }
  83
  84 static struct snd_soc_ops evm_ops = {
  85         .hw_params = evm_hw_params,
  86 };
  87
  88 static struct snd_soc_ops evm_spdif_ops = {
  89         .hw_params = evm_spdif_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_codec *codec = rtd->codec;
 126         struct snd_soc_dapm_context *dapm = &codec->dapm;
 127         struct device_node *np = codec->card->dev->of_node;
 128         int ret;
 129
 130         /* Add davinci-evm specific widgets */
 131         snd_soc_dapm_new_controls(dapm, aic3x_dapm_widgets,
 132                                   ARRAY_SIZE(aic3x_dapm_widgets));
 133
 134         if (np) {
 135                 ret = snd_soc_of_parse_audio_routing(codec->card,
 136                                                         "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(dapm, audio_map, ARRAY_SIZE(audio_map));
 142         }
 143
 144         /* not connected */
 145         snd_soc_dapm_disable_pin(dapm, "MONO_LOUT");
 146         snd_soc_dapm_disable_pin(dapm, "HPLCOM");
 147         snd_soc_dapm_disable_pin(dapm, "HPRCOM");
 148
 149         /* always connected */
 150         snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
 151         snd_soc_dapm_enable_pin(dapm, "Line Out");
 152         snd_soc_dapm_enable_pin(dapm, "Mic Jack");
 153         snd_soc_dapm_enable_pin(dapm, "Line In");
 154
 155         return 0;
 156 }
 157
 158 /* davinci-evm digital audio interface glue - connects codec <--> CPU */
 159 static struct snd_soc_dai_link dm6446_evm_dai = {
 160         .name = "TLV320AIC3X",
 161         .stream_name = "AIC3X",
 162         .cpu_dai_name = "davinci-mcbsp",
 163         .codec_dai_name = "tlv320aic3x-hifi",
 164         .codec_name = "tlv320aic3x-codec.1-001b",
 165         .platform_name = "davinci-mcbsp",
 166         .init = evm_aic3x_init,
 167         .ops = &evm_ops,
 168 };
 169
 170 static struct snd_soc_dai_link dm355_evm_dai = {
 171         .name = "TLV320AIC3X",
 172         .stream_name = "AIC3X",
 173         .cpu_dai_name = "davinci-mcbsp.1",
 174         .codec_dai_name = "tlv320aic3x-hifi",
 175         .codec_name = "tlv320aic3x-codec.1-001b",
 176         .platform_name = "davinci-mcbsp.1",
 177         .init = evm_aic3x_init,
 178         .ops = &evm_ops,
 179 };
 180
 181 static struct snd_soc_dai_link dm365_evm_dai = {
 182 #ifdef CONFIG_SND_DM365_AIC3X_CODEC
 183         .name = "TLV320AIC3X",
 184         .stream_name = "AIC3X",
 185         .cpu_dai_name = "davinci-mcbsp",
 186         .codec_dai_name = "tlv320aic3x-hifi",
 187         .init = evm_aic3x_init,
 188         .codec_name = "tlv320aic3x-codec.1-0018",
 189         .ops = &evm_ops,
 190         .platform_name = "davinci-mcbsp",
 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         },
 212         {
 213                 .name = "McASP",
 214                 .stream_name = "spdif",
 215                 .cpu_dai_name= "davinci-mcasp.1",
 216                 .codec_dai_name = "dit-hifi",
 217                 .codec_name = "spdif_dit",
 218                 .platform_name = "davinci-mcasp.1",
 219                 .ops = &evm_spdif_ops,
 220         },
 221 };
 222
 223 static struct snd_soc_dai_link da830_evm_dai = {
 224         .name = "TLV320AIC3X",
 225         .stream_name = "AIC3X",
 226         .cpu_dai_name = "davinci-mcasp.1",
 227         .codec_dai_name = "tlv320aic3x-hifi",
 228         .codec_name = "tlv320aic3x-codec.1-0018",
 229         .platform_name = "davinci-mcasp.1",
 230         .init = evm_aic3x_init,
 231         .ops = &evm_ops,
 232 };
 233
 234 static struct snd_soc_dai_link da850_evm_dai = {
 235         .name = "TLV320AIC3X",
 236         .stream_name = "AIC3X",
 237         .cpu_dai_name= "davinci-mcasp.0",
 238         .codec_dai_name = "tlv320aic3x-hifi",
 239         .codec_name = "tlv320aic3x-codec.1-0018",
 240         .platform_name = "davinci-mcasp.0",
 241         .init = evm_aic3x_init,
 242         .ops = &evm_ops,
 243 };
 244
 245 /* davinci dm6446 evm audio machine driver */
 246 /*
 247  * ASP0 in DM6446 EVM is clocked by U55, as configured by
 248  * board-dm644x-evm.c using GPIOs from U18.  There are six
 249  * options; here we "know" we use a 48 KHz sample rate.
 250  */
 251 static struct snd_soc_card_drvdata_davinci dm6446_snd_soc_card_drvdata = {
 252         .sysclk = 12288000,
 253 };
 254
 255 static struct snd_soc_card dm6446_snd_soc_card_evm = {
 256         .name = "DaVinci DM6446 EVM",
 257         .owner = THIS_MODULE,
 258         .dai_link = &dm6446_evm_dai,
 259         .num_links = 1,
 260         .drvdata = &dm6446_snd_soc_card_drvdata,
 261 };
 262
 263 /* davinci dm355 evm audio machine driver */
 264 /* ASP1 on DM355 EVM is clocked by an external oscillator */
 265 static struct snd_soc_card_drvdata_davinci dm355_snd_soc_card_drvdata = {
 266         .sysclk = 27000000,
 267 };
 268
 269 static struct snd_soc_card dm355_snd_soc_card_evm = {
 270         .name = "DaVinci DM355 EVM",
 271         .owner = THIS_MODULE,
 272         .dai_link = &dm355_evm_dai,
 273         .num_links = 1,
 274         .drvdata = &dm355_snd_soc_card_drvdata,
 275 };
 276
 277 /* davinci dm365 evm audio machine driver */
 278 static struct snd_soc_card_drvdata_davinci dm365_snd_soc_card_drvdata = {
 279         .sysclk = 27000000,
 280 };
 281
 282 static struct snd_soc_card dm365_snd_soc_card_evm = {
 283         .name = "DaVinci DM365 EVM",
 284         .owner = THIS_MODULE,
 285         .dai_link = &dm365_evm_dai,
 286         .num_links = 1,
 287         .drvdata = &dm365_snd_soc_card_drvdata,
 288 };
 289
 290 /* davinci dm6467 evm audio machine driver */
 291 static struct snd_soc_card_drvdata_davinci dm6467_snd_soc_card_drvdata = {
 292         .sysclk = 27000000,
 293 };
 294
 295 static struct snd_soc_card dm6467_snd_soc_card_evm = {
 296         .name = "DaVinci DM6467 EVM",
 297         .owner = THIS_MODULE,
 298         .dai_link = dm6467_evm_dai,
 299         .num_links = ARRAY_SIZE(dm6467_evm_dai),
 300         .drvdata = &dm6467_snd_soc_card_drvdata,
 301 };
 302
 303 static struct snd_soc_card_drvdata_davinci da830_snd_soc_card_drvdata = {
 304         .sysclk = 24576000,
 305 };
 306
 307 static struct snd_soc_card da830_snd_soc_card = {
 308         .name = "DA830/OMAP-L137 EVM",
 309         .owner = THIS_MODULE,
 310         .dai_link = &da830_evm_dai,
 311         .num_links = 1,
 312         .drvdata = &da830_snd_soc_card_drvdata,
 313 };
 314
 315 static struct snd_soc_card_drvdata_davinci da850_snd_soc_card_drvdata = {
 316         .sysclk = 24576000,
 317 };
 318
 319 static struct snd_soc_card da850_snd_soc_card = {
 320         .name = "DA850/OMAP-L138 EVM",
 321         .owner = THIS_MODULE,
 322         .dai_link = &da850_evm_dai,
 323         .num_links = 1,
 324         .drvdata = &da850_snd_soc_card_drvdata,
 325 };
 326
 327 #if defined(CONFIG_OF)
 328
 329 /*
 330  * The struct is used as place holder. It will be completely
 331  * filled with data from dt node.
 332  */
 333 static struct snd_soc_dai_link evm_dai_tlv320aic3x = {
 334         .name           = "TLV320AIC3X",
 335         .stream_name    = "AIC3X",
 336         .codec_dai_name = "tlv320aic3x-hifi",
 337         .ops            = &evm_ops,
 338         .init           = evm_aic3x_init,
 339 };
 340
 341 static const struct of_device_id davinci_evm_dt_ids[] = {
 342         {
 343                 .compatible = "ti,da830-evm-audio",
 344                 .data = (void *) &evm_dai_tlv320aic3x,
 345         },
 346         { /* sentinel */ }
 347 };
 348 MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids);
 349
 350 /* davinci evm audio machine driver */
 351 static struct snd_soc_card evm_soc_card = {
 352         .owner = THIS_MODULE,
 353         .num_links = 1,
 354 };
 355
 356 static int davinci_evm_probe(struct platform_device *pdev)
 357 {
 358         struct device_node *np = pdev->dev.of_node;
 359         const struct of_device_id *match =
 360                 of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev);
 361         struct snd_soc_dai_link *dai = (struct snd_soc_dai_link *) match->data;
 362         struct snd_soc_card_drvdata_davinci *drvdata = NULL;
 363         int ret = 0;
 364
 365         evm_soc_card.dai_link = dai;
 366
 367         dai->codec_of_node = of_parse_phandle(np, "ti,audio-codec", 0);
 368         if (!dai->codec_of_node)
 369                 return -EINVAL;
 370
 371         dai->cpu_of_node = of_parse_phandle(np, "ti,mcasp-controller", 0);
 372         if (!dai->cpu_of_node)
 373                 return -EINVAL;
 374
 375         dai->platform_of_node = dai->cpu_of_node;
 376
 377         evm_soc_card.dev = &pdev->dev;
 378         ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model");
 379         if (ret)
 380                 return ret;
 381
 382         drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
 383         if (!drvdata)
 384                 return -ENOMEM;
 385
 386         ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk);
 387         if (ret < 0)
 388                 return -EINVAL;
 389
 390         snd_soc_card_set_drvdata(&evm_soc_card, drvdata);
 391         ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card);
 392
 393         if (ret)
 394                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
 395
 396         return ret;
 397 }
 398
 399 static int davinci_evm_remove(struct platform_device *pdev)
 400 {
 401         struct snd_soc_card *card = platform_get_drvdata(pdev);
 402
 403         snd_soc_unregister_card(card);
 404
 405         return 0;
 406 }
 407
 408 static struct platform_driver davinci_evm_driver = {
 409         .probe          = davinci_evm_probe,
 410         .remove         = davinci_evm_remove,
 411         .driver         = {
 412                 .name   = "davinci_evm",
 413                 .owner  = THIS_MODULE,
 414                 .of_match_table = of_match_ptr(davinci_evm_dt_ids),
 415         },
 416 };
 417 #endif
 418
 419 static struct platform_device *evm_snd_device;
 420
 421 static int __init evm_init(void)
 422 {
 423         struct snd_soc_card *evm_snd_dev_data;
 424         int index;
 425         int ret;
 426
 427         /*
 428          * If dtb is there, the devices will be created dynamically.
 429          * Only register platfrom driver structure.
 430          */
 431 #if defined(CONFIG_OF)
 432         if (of_have_populated_dt())
 433                 return platform_driver_register(&davinci_evm_driver);
 434 #endif
 435
 436         if (machine_is_davinci_evm()) {
 437                 evm_snd_dev_data = &dm6446_snd_soc_card_evm;
 438                 index = 0;
 439         } else if (machine_is_davinci_dm355_evm()) {
 440                 evm_snd_dev_data = &dm355_snd_soc_card_evm;
 441                 index = 1;
 442         } else if (machine_is_davinci_dm365_evm()) {
 443                 evm_snd_dev_data = &dm365_snd_soc_card_evm;
 444                 index = 0;
 445         } else if (machine_is_davinci_dm6467_evm()) {
 446                 evm_snd_dev_data = &dm6467_snd_soc_card_evm;
 447                 index = 0;
 448         } else if (machine_is_davinci_da830_evm()) {
 449                 evm_snd_dev_data = &da830_snd_soc_card;
 450                 index = 1;
 451         } else if (machine_is_davinci_da850_evm()) {
 452                 evm_snd_dev_data = &da850_snd_soc_card;
 453                 index = 0;
 454         } else
 455                 return -EINVAL;
 456
 457         evm_snd_device = platform_device_alloc("soc-audio", index);
 458         if (!evm_snd_device)
 459                 return -ENOMEM;
 460
 461         platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
 462         ret = platform_device_add(evm_snd_device);
 463         if (ret)
 464                 platform_device_put(evm_snd_device);
 465
 466         return ret;
 467 }
 468
 469 static void __exit evm_exit(void)
 470 {
 471 #if defined(CONFIG_OF)
 472         if (of_have_populated_dt()) {
 473                 platform_driver_unregister(&davinci_evm_driver);
 474                 return;
 475         }
 476 #endif
 477
 478         platform_device_unregister(evm_snd_device);
 479 }
 480
 481 module_init(evm_init);
 482 module_exit(evm_exit);
 483
 484 MODULE_AUTHOR("Vladimir Barinov");
 485 MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
 486 MODULE_LICENSE("GPL");