linux/sound/soc/davinci/davinci-evm.c
<<
>>
Prefs
   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
  33struct snd_soc_card_drvdata_davinci {
  34        struct clk *mclk;
  35        unsigned sysclk;
  36};
  37
  38static 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
  51static 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
  62static 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
  86static 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 */
  93static 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 */
 101static 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 */
 123static 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 */
 153static 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
 166static 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
 179static 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
 201static 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
 226static 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
 239static 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 */
 258static struct snd_soc_card_drvdata_davinci dm6446_snd_soc_card_drvdata = {
 259        .sysclk = 12288000,
 260};
 261
 262static 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 */
 272static struct snd_soc_card_drvdata_davinci dm355_snd_soc_card_drvdata = {
 273        .sysclk = 27000000,
 274};
 275
 276static 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 */
 285static struct snd_soc_card_drvdata_davinci dm365_snd_soc_card_drvdata = {
 286        .sysclk = 27000000,
 287};
 288
 289static 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 */
 298static struct snd_soc_card_drvdata_davinci dm6467_snd_soc_card_drvdata = {
 299        .sysclk = 27000000,
 300};
 301
 302static 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
 310static struct snd_soc_card_drvdata_davinci da830_snd_soc_card_drvdata = {
 311        .sysclk = 24576000,
 312};
 313
 314static 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
 322static struct snd_soc_card_drvdata_davinci da850_snd_soc_card_drvdata = {
 323        .sysclk = 24576000,
 324};
 325
 326static 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 */
 340static 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
 350static 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};
 357MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids);
 358
 359/* davinci evm audio machine driver */
 360static struct snd_soc_card evm_soc_card = {
 361        .owner = THIS_MODULE,
 362        .num_links = 1,
 363};
 364
 365static 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
 434static 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
 443static struct platform_driver davinci_evm_driver = {
 444        .probe          = davinci_evm_probe,
 445        .remove         = davinci_evm_remove,
 446        .driver         = {
 447                .name   = "davinci_evm",
 448                .pm     = &snd_soc_pm_ops,
 449                .of_match_table = of_match_ptr(davinci_evm_dt_ids),
 450        },
 451};
 452#endif
 453
 454static struct platform_device *evm_snd_device;
 455
 456static int __init evm_init(void)
 457{
 458        struct snd_soc_card *evm_snd_dev_data;
 459        int index;
 460        int ret;
 461
 462        /*
 463         * If dtb is there, the devices will be created dynamically.
 464         * Only register platfrom driver structure.
 465         */
 466#if defined(CONFIG_OF)
 467        if (of_have_populated_dt())
 468                return platform_driver_register(&davinci_evm_driver);
 469#endif
 470
 471        if (machine_is_davinci_evm()) {
 472                evm_snd_dev_data = &dm6446_snd_soc_card_evm;
 473                index = 0;
 474        } else if (machine_is_davinci_dm355_evm()) {
 475                evm_snd_dev_data = &dm355_snd_soc_card_evm;
 476                index = 1;
 477        } else if (machine_is_davinci_dm365_evm()) {
 478                evm_snd_dev_data = &dm365_snd_soc_card_evm;
 479                index = 0;
 480        } else if (machine_is_davinci_dm6467_evm()) {
 481                evm_snd_dev_data = &dm6467_snd_soc_card_evm;
 482                index = 0;
 483        } else if (machine_is_davinci_da830_evm()) {
 484                evm_snd_dev_data = &da830_snd_soc_card;
 485                index = 1;
 486        } else if (machine_is_davinci_da850_evm()) {
 487                evm_snd_dev_data = &da850_snd_soc_card;
 488                index = 0;
 489        } else
 490                return -EINVAL;
 491
 492        evm_snd_device = platform_device_alloc("soc-audio", index);
 493        if (!evm_snd_device)
 494                return -ENOMEM;
 495
 496        platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
 497        ret = platform_device_add(evm_snd_device);
 498        if (ret)
 499                platform_device_put(evm_snd_device);
 500
 501        return ret;
 502}
 503
 504static void __exit evm_exit(void)
 505{
 506#if defined(CONFIG_OF)
 507        if (of_have_populated_dt()) {
 508                platform_driver_unregister(&davinci_evm_driver);
 509                return;
 510        }
 511#endif
 512
 513        platform_device_unregister(evm_snd_device);
 514}
 515
 516module_init(evm_init);
 517module_exit(evm_exit);
 518
 519MODULE_AUTHOR("Vladimir Barinov");
 520MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
 521MODULE_LICENSE("GPL");
 522
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.