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 static int evm_hw_params(struct snd_pcm_substream *substream,
  37                          struct snd_pcm_hw_params *params)
  38 {
  39         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  40         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  41         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  42         struct snd_soc_codec *codec = rtd->codec;
  43         struct snd_soc_card *soc_card = codec->card;
  44         int ret = 0;
  45         unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *)
  46                            snd_soc_card_get_drvdata(soc_card))->sysclk;
  47
  48         /* set the codec system clock */
  49         ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
  50         if (ret < 0)
  51                 return ret;
  52
  53         /* set the CPU system clock */
  54         ret = snd_soc_dai_set_sysclk(cpu_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
  55         if (ret < 0)
  56                 return ret;
  57
  58         return 0;
  59 }
  60
  61 static struct snd_soc_ops evm_ops = {
  62         .hw_params = evm_hw_params,
  63 };
  64
  65 /* davinci-evm machine dapm widgets */
  66 static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
  67         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  68         SND_SOC_DAPM_LINE("Line Out", NULL),
  69         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  70         SND_SOC_DAPM_LINE("Line In", NULL),
  71 };
  72
  73 /* davinci-evm machine audio_mapnections to the codec pins */
  74 static const struct snd_soc_dapm_route audio_map[] = {
  75         /* Headphone connected to HPLOUT, HPROUT */
  76         {"Headphone Jack", NULL, "HPLOUT"},
  77         {"Headphone Jack", NULL, "HPROUT"},
  78
  79         /* Line Out connected to LLOUT, RLOUT */
  80         {"Line Out", NULL, "LLOUT"},
  81         {"Line Out", NULL, "RLOUT"},
  82
  83         /* Mic connected to (MIC3L | MIC3R) */
  84         {"MIC3L", NULL, "Mic Bias"},
  85         {"MIC3R", NULL, "Mic Bias"},
  86         {"Mic Bias", NULL, "Mic Jack"},
  87
  88         /* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
  89         {"LINE1L", NULL, "Line In"},
  90         {"LINE2L", NULL, "Line In"},
  91         {"LINE1R", NULL, "Line In"},
  92         {"LINE2R", NULL, "Line In"},
  93 };
  94
  95 /* Logic for a aic3x as connected on a davinci-evm */
  96 static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd)
  97 {
  98         struct snd_soc_codec *codec = rtd->codec;
  99         struct snd_soc_dapm_context *dapm = &codec->dapm;
 100         struct device_node *np = codec->card->dev->of_node;
 101         int ret;
 102
 103         /* Add davinci-evm specific widgets */
 104         snd_soc_dapm_new_controls(dapm, aic3x_dapm_widgets,
 105                                   ARRAY_SIZE(aic3x_dapm_widgets));
 106
 107         if (np) {
 108                 ret = snd_soc_of_parse_audio_routing(codec->card,
 109                                                         "ti,audio-routing");
 110                 if (ret)
 111                         return ret;
 112         } else {
 113                 /* Set up davinci-evm specific audio path audio_map */
 114                 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 115         }
 116
 117         /* not connected */
 118         snd_soc_dapm_disable_pin(dapm, "MONO_LOUT");
 119         snd_soc_dapm_disable_pin(dapm, "HPLCOM");
 120         snd_soc_dapm_disable_pin(dapm, "HPRCOM");
 121
 122         /* always connected */
 123         snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
 124         snd_soc_dapm_enable_pin(dapm, "Line Out");
 125         snd_soc_dapm_enable_pin(dapm, "Mic Jack");
 126         snd_soc_dapm_enable_pin(dapm, "Line In");
 127
 128         return 0;
 129 }
 130
 131 /* davinci-evm digital audio interface glue - connects codec <--> CPU */
 132 static struct snd_soc_dai_link dm6446_evm_dai = {
 133         .name = "TLV320AIC3X",
 134         .stream_name = "AIC3X",
 135         .cpu_dai_name = "davinci-mcbsp",
 136         .codec_dai_name = "tlv320aic3x-hifi",
 137         .codec_name = "tlv320aic3x-codec.1-001b",
 138         .platform_name = "davinci-mcbsp",
 139         .init = evm_aic3x_init,
 140         .ops = &evm_ops,
 141         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 142                    SND_SOC_DAIFMT_IB_NF,
 143 };
 144
 145 static struct snd_soc_dai_link dm355_evm_dai = {
 146         .name = "TLV320AIC3X",
 147         .stream_name = "AIC3X",
 148         .cpu_dai_name = "davinci-mcbsp.1",
 149         .codec_dai_name = "tlv320aic3x-hifi",
 150         .codec_name = "tlv320aic3x-codec.1-001b",
 151         .platform_name = "davinci-mcbsp.1",
 152         .init = evm_aic3x_init,
 153         .ops = &evm_ops,
 154         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 155                    SND_SOC_DAIFMT_IB_NF,
 156 };
 157
 158 static struct snd_soc_dai_link dm365_evm_dai = {
 159 #ifdef CONFIG_SND_DM365_AIC3X_CODEC
 160         .name = "TLV320AIC3X",
 161         .stream_name = "AIC3X",
 162         .cpu_dai_name = "davinci-mcbsp",
 163         .codec_dai_name = "tlv320aic3x-hifi",
 164         .codec_name = "tlv320aic3x-codec.1-0018",
 165         .platform_name = "davinci-mcbsp",
 166         .init = evm_aic3x_init,
 167         .ops = &evm_ops,
 168         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 169                    SND_SOC_DAIFMT_IB_NF,
 170 #elif defined(CONFIG_SND_DM365_VOICE_CODEC)
 171         .name = "Voice Codec - CQ93VC",
 172         .stream_name = "CQ93",
 173         .cpu_dai_name = "davinci-vcif",
 174         .codec_dai_name = "cq93vc-hifi",
 175         .codec_name = "cq93vc-codec",
 176         .platform_name = "davinci-vcif",
 177 #endif
 178 };
 179
 180 static struct snd_soc_dai_link dm6467_evm_dai[] = {
 181         {
 182                 .name = "TLV320AIC3X",
 183                 .stream_name = "AIC3X",
 184                 .cpu_dai_name= "davinci-mcasp.0",
 185                 .codec_dai_name = "tlv320aic3x-hifi",
 186                 .platform_name = "davinci-mcasp.0",
 187                 .codec_name = "tlv320aic3x-codec.0-001a",
 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         },
 193         {
 194                 .name = "McASP",
 195                 .stream_name = "spdif",
 196                 .cpu_dai_name= "davinci-mcasp.1",
 197                 .codec_dai_name = "dit-hifi",
 198                 .codec_name = "spdif_dit",
 199                 .platform_name = "davinci-mcasp.1",
 200                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 201                            SND_SOC_DAIFMT_IB_NF,
 202         },
 203 };
 204
 205 static struct snd_soc_dai_link da830_evm_dai = {
 206         .name = "TLV320AIC3X",
 207         .stream_name = "AIC3X",
 208         .cpu_dai_name = "davinci-mcasp.1",
 209         .codec_dai_name = "tlv320aic3x-hifi",
 210         .codec_name = "tlv320aic3x-codec.1-0018",
 211         .platform_name = "davinci-mcasp.1",
 212         .init = evm_aic3x_init,
 213         .ops = &evm_ops,
 214         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 215                    SND_SOC_DAIFMT_IB_NF,
 216 };
 217
 218 static struct snd_soc_dai_link da850_evm_dai = {
 219         .name = "TLV320AIC3X",
 220         .stream_name = "AIC3X",
 221         .cpu_dai_name= "davinci-mcasp.0",
 222         .codec_dai_name = "tlv320aic3x-hifi",
 223         .codec_name = "tlv320aic3x-codec.1-0018",
 224         .platform_name = "davinci-mcasp.0",
 225         .init = evm_aic3x_init,
 226         .ops = &evm_ops,
 227         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 228                    SND_SOC_DAIFMT_IB_NF,
 229 };
 230
 231 /* davinci dm6446 evm audio machine driver */
 232 /*
 233  * ASP0 in DM6446 EVM is clocked by U55, as configured by
 234  * board-dm644x-evm.c using GPIOs from U18.  There are six
 235  * options; here we "know" we use a 48 KHz sample rate.
 236  */
 237 static struct snd_soc_card_drvdata_davinci dm6446_snd_soc_card_drvdata = {
 238         .sysclk = 12288000,
 239 };
 240
 241 static struct snd_soc_card dm6446_snd_soc_card_evm = {
 242         .name = "DaVinci DM6446 EVM",
 243         .owner = THIS_MODULE,
 244         .dai_link = &dm6446_evm_dai,
 245         .num_links = 1,
 246         .drvdata = &dm6446_snd_soc_card_drvdata,
 247 };
 248
 249 /* davinci dm355 evm audio machine driver */
 250 /* ASP1 on DM355 EVM is clocked by an external oscillator */
 251 static struct snd_soc_card_drvdata_davinci dm355_snd_soc_card_drvdata = {
 252         .sysclk = 27000000,
 253 };
 254
 255 static struct snd_soc_card dm355_snd_soc_card_evm = {
 256         .name = "DaVinci DM355 EVM",
 257         .owner = THIS_MODULE,
 258         .dai_link = &dm355_evm_dai,
 259         .num_links = 1,
 260         .drvdata = &dm355_snd_soc_card_drvdata,
 261 };
 262
 263 /* davinci dm365 evm audio machine driver */
 264 static struct snd_soc_card_drvdata_davinci dm365_snd_soc_card_drvdata = {
 265         .sysclk = 27000000,
 266 };
 267
 268 static struct snd_soc_card dm365_snd_soc_card_evm = {
 269         .name = "DaVinci DM365 EVM",
 270         .owner = THIS_MODULE,
 271         .dai_link = &dm365_evm_dai,
 272         .num_links = 1,
 273         .drvdata = &dm365_snd_soc_card_drvdata,
 274 };
 275
 276 /* davinci dm6467 evm audio machine driver */
 277 static struct snd_soc_card_drvdata_davinci dm6467_snd_soc_card_drvdata = {
 278         .sysclk = 27000000,
 279 };
 280
 281 static struct snd_soc_card dm6467_snd_soc_card_evm = {
 282         .name = "DaVinci DM6467 EVM",
 283         .owner = THIS_MODULE,
 284         .dai_link = dm6467_evm_dai,
 285         .num_links = ARRAY_SIZE(dm6467_evm_dai),
 286         .drvdata = &dm6467_snd_soc_card_drvdata,
 287 };
 288
 289 static struct snd_soc_card_drvdata_davinci da830_snd_soc_card_drvdata = {
 290         .sysclk = 24576000,
 291 };
 292
 293 static struct snd_soc_card da830_snd_soc_card = {
 294         .name = "DA830/OMAP-L137 EVM",
 295         .owner = THIS_MODULE,
 296         .dai_link = &da830_evm_dai,
 297         .num_links = 1,
 298         .drvdata = &da830_snd_soc_card_drvdata,
 299 };
 300
 301 static struct snd_soc_card_drvdata_davinci da850_snd_soc_card_drvdata = {
 302         .sysclk = 24576000,
 303 };
 304
 305 static struct snd_soc_card da850_snd_soc_card = {
 306         .name = "DA850/OMAP-L138 EVM",
 307         .owner = THIS_MODULE,
 308         .dai_link = &da850_evm_dai,
 309         .num_links = 1,
 310         .drvdata = &da850_snd_soc_card_drvdata,
 311 };
 312
 313 #if defined(CONFIG_OF)
 314
 315 /*
 316  * The struct is used as place holder. It will be completely
 317  * filled with data from dt node.
 318  */
 319 static struct snd_soc_dai_link evm_dai_tlv320aic3x = {
 320         .name           = "TLV320AIC3X",
 321         .stream_name    = "AIC3X",
 322         .codec_dai_name = "tlv320aic3x-hifi",
 323         .ops            = &evm_ops,
 324         .init           = evm_aic3x_init,
 325         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
 326                    SND_SOC_DAIFMT_IB_NF,
 327 };
 328
 329 static const struct of_device_id davinci_evm_dt_ids[] = {
 330         {
 331                 .compatible = "ti,da830-evm-audio",
 332                 .data = (void *) &evm_dai_tlv320aic3x,
 333         },
 334         { /* sentinel */ }
 335 };
 336 MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids);
 337
 338 /* davinci evm audio machine driver */
 339 static struct snd_soc_card evm_soc_card = {
 340         .owner = THIS_MODULE,
 341         .num_links = 1,
 342 };
 343
 344 static int davinci_evm_probe(struct platform_device *pdev)
 345 {
 346         struct device_node *np = pdev->dev.of_node;
 347         const struct of_device_id *match =
 348                 of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev);
 349         struct snd_soc_dai_link *dai = (struct snd_soc_dai_link *) match->data;
 350         struct snd_soc_card_drvdata_davinci *drvdata = NULL;
 351         int ret = 0;
 352
 353         evm_soc_card.dai_link = dai;
 354
 355         dai->codec_of_node = of_parse_phandle(np, "ti,audio-codec", 0);
 356         if (!dai->codec_of_node)
 357                 return -EINVAL;
 358
 359         dai->cpu_of_node = of_parse_phandle(np, "ti,mcasp-controller", 0);
 360         if (!dai->cpu_of_node)
 361                 return -EINVAL;
 362
 363         dai->platform_of_node = dai->cpu_of_node;
 364
 365         evm_soc_card.dev = &pdev->dev;
 366         ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model");
 367         if (ret)
 368                 return ret;
 369
 370         drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
 371         if (!drvdata)
 372                 return -ENOMEM;
 373
 374         ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk);
 375         if (ret < 0)
 376                 return -EINVAL;
 377
 378         snd_soc_card_set_drvdata(&evm_soc_card, drvdata);
 379         ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card);
 380
 381         if (ret)
 382                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
 383
 384         return ret;
 385 }
 386
 387 static int davinci_evm_remove(struct platform_device *pdev)
 388 {
 389         struct snd_soc_card *card = platform_get_drvdata(pdev);
 390
 391         snd_soc_unregister_card(card);
 392
 393         return 0;
 394 }
 395
 396 static struct platform_driver davinci_evm_driver = {
 397         .probe          = davinci_evm_probe,
 398         .remove         = davinci_evm_remove,
 399         .driver         = {
 400                 .name   = "davinci_evm",
 401                 .owner  = THIS_MODULE,
 402                 .pm     = &snd_soc_pm_ops,
 403                 .of_match_table = of_match_ptr(davinci_evm_dt_ids),
 404         },
 405 };
 406 #endif
 407
 408 static struct platform_device *evm_snd_device;
 409
 410 static int __init evm_init(void)
 411 {
 412         struct snd_soc_card *evm_snd_dev_data;
 413         int index;
 414         int ret;
 415
 416         /*
 417          * If dtb is there, the devices will be created dynamically.
 418          * Only register platfrom driver structure.
 419          */
 420 #if defined(CONFIG_OF)
 421         if (of_have_populated_dt())
 422                 return platform_driver_register(&davinci_evm_driver);
 423 #endif
 424
 425         if (machine_is_davinci_evm()) {
 426                 evm_snd_dev_data = &dm6446_snd_soc_card_evm;
 427                 index = 0;
 428         } else if (machine_is_davinci_dm355_evm()) {
 429                 evm_snd_dev_data = &dm355_snd_soc_card_evm;
 430                 index = 1;
 431         } else if (machine_is_davinci_dm365_evm()) {
 432                 evm_snd_dev_data = &dm365_snd_soc_card_evm;
 433                 index = 0;
 434         } else if (machine_is_davinci_dm6467_evm()) {
 435                 evm_snd_dev_data = &dm6467_snd_soc_card_evm;
 436                 index = 0;
 437         } else if (machine_is_davinci_da830_evm()) {
 438                 evm_snd_dev_data = &da830_snd_soc_card;
 439                 index = 1;
 440         } else if (machine_is_davinci_da850_evm()) {
 441                 evm_snd_dev_data = &da850_snd_soc_card;
 442                 index = 0;
 443         } else
 444                 return -EINVAL;
 445
 446         evm_snd_device = platform_device_alloc("soc-audio", index);
 447         if (!evm_snd_device)
 448                 return -ENOMEM;
 449
 450         platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
 451         ret = platform_device_add(evm_snd_device);
 452         if (ret)
 453                 platform_device_put(evm_snd_device);
 454
 455         return ret;
 456 }
 457
 458 static void __exit evm_exit(void)
 459 {
 460 #if defined(CONFIG_OF)
 461         if (of_have_populated_dt()) {
 462                 platform_driver_unregister(&davinci_evm_driver);
 463                 return;
 464         }
 465 #endif
 466
 467         platform_device_unregister(evm_snd_device);
 468 }
 469
 470 module_init(evm_init);
 471 module_exit(evm_exit);
 472
 473 MODULE_AUTHOR("Vladimir Barinov");
 474 MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
 475 MODULE_LICENSE("GPL");