sound/soc/tegra/tegra_wm8903.c

   1 /*
   2  * tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 codec.
   3  *
   4  * Author: Stephen Warren <swarren@nvidia.com>
   5  * Copyright (C) 2010-2011 - NVIDIA, Inc.
   6  *
   7  * Based on code copyright/by:
   8  *
   9  * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
  10  *
  11  * Copyright 2007 Wolfson Microelectronics PLC.
  12  * Author: Graeme Gregory
  13  *         graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * version 2 as published by the Free Software Foundation.
  18  *
  19  * This program is distributed in the hope that it will be useful, but
  20  * WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  22  * General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  27  * 02110-1301 USA
  28  *
  29  */
  30
  31 #include <asm/mach-types.h>
  32
  33 #include <linux/module.h>
  34 #include <linux/platform_device.h>
  35 #include <linux/slab.h>
  36 #include <linux/gpio.h>
  37
  38 #include <mach/tegra_wm8903_pdata.h>
  39
  40 #include <sound/core.h>
  41 #include <sound/jack.h>
  42 #include <sound/pcm.h>
  43 #include <sound/pcm_params.h>
  44 #include <sound/soc.h>
  45
  46 #include "../codecs/wm8903.h"
  47
  48 #include "tegra_das.h"
  49 #include "tegra_i2s.h"
  50 #include "tegra_pcm.h"
  51 #include "tegra_asoc_utils.h"
  52
  53 #define DRV_NAME "tegra-snd-wm8903"
  54
  55 #define GPIO_SPKR_EN    BIT(0)
  56 #define GPIO_HP_MUTE    BIT(1)
  57 #define GPIO_INT_MIC_EN BIT(2)
  58 #define GPIO_EXT_MIC_EN BIT(3)
  59 #define GPIO_HP_DET     BIT(4)
  60
  61 struct tegra_wm8903 {
  62         struct tegra_asoc_utils_data util_data;
  63         struct tegra_wm8903_platform_data *pdata;
  64         int gpio_requested;
  65 };
  66
  67 static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream,
  68                                         struct snd_pcm_hw_params *params)
  69 {
  70         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  71         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  72         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  73         struct snd_soc_codec *codec = rtd->codec;
  74         struct snd_soc_card *card = codec->card;
  75         struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
  76         int srate, mclk;
  77         int err;
  78
  79         srate = params_rate(params);
  80         switch (srate) {
  81         case 64000:
  82         case 88200:
  83         case 96000:
  84                 mclk = 128 * srate;
  85                 break;
  86         default:
  87                 mclk = 256 * srate;
  88                 break;
  89         }
  90         /* FIXME: Codec only requires >= 3MHz if OSR==0 */
  91         while (mclk < 6000000)
  92                 mclk *= 2;
  93
  94         err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
  95         if (err < 0) {
  96                 dev_err(card->dev, "Can't configure clocks\n");
  97                 return err;
  98         }
  99
 100         err = snd_soc_dai_set_fmt(codec_dai,
 101                                         SND_SOC_DAIFMT_I2S |
 102                                         SND_SOC_DAIFMT_NB_NF |
 103                                         SND_SOC_DAIFMT_CBS_CFS);
 104         if (err < 0) {
 105                 dev_err(card->dev, "codec_dai fmt not set\n");
 106                 return err;
 107         }
 108
 109         err = snd_soc_dai_set_fmt(cpu_dai,
 110                                         SND_SOC_DAIFMT_I2S |
 111                                         SND_SOC_DAIFMT_NB_NF |
 112                                         SND_SOC_DAIFMT_CBS_CFS);
 113         if (err < 0) {
 114                 dev_err(card->dev, "cpu_dai fmt not set\n");
 115                 return err;
 116         }
 117
 118         err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
 119                                         SND_SOC_CLOCK_IN);
 120         if (err < 0) {
 121                 dev_err(card->dev, "codec_dai clock not set\n");
 122                 return err;
 123         }
 124
 125         return 0;
 126 }
 127
 128 static struct snd_soc_ops tegra_wm8903_ops = {
 129         .hw_params = tegra_wm8903_hw_params,
 130 };
 131
 132 static struct snd_soc_jack tegra_wm8903_hp_jack;
 133
 134 static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = {
 135         {
 136                 .pin = "Headphone Jack",
 137                 .mask = SND_JACK_HEADPHONE,
 138         },
 139 };
 140
 141 static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = {
 142         .name = "headphone detect",
 143         .report = SND_JACK_HEADPHONE,
 144         .debounce_time = 150,
 145         .invert = 1,
 146 };
 147
 148 static struct snd_soc_jack tegra_wm8903_mic_jack;
 149
 150 static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
 151         {
 152                 .pin = "Mic Jack",
 153                 .mask = SND_JACK_MICROPHONE,
 154         },
 155 };
 156
 157 static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w,
 158                                         struct snd_kcontrol *k, int event)
 159 {
 160         struct snd_soc_dapm_context *dapm = w->dapm;
 161         struct snd_soc_card *card = dapm->card;
 162         struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
 163         struct tegra_wm8903_platform_data *pdata = machine->pdata;
 164
 165         if (!(machine->gpio_requested & GPIO_SPKR_EN))
 166                 return 0;
 167
 168         gpio_set_value_cansleep(pdata->gpio_spkr_en,
 169                                 SND_SOC_DAPM_EVENT_ON(event));
 170
 171         return 0;
 172 }
 173
 174 static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w,
 175                                         struct snd_kcontrol *k, int event)
 176 {
 177         struct snd_soc_dapm_context *dapm = w->dapm;
 178         struct snd_soc_card *card = dapm->card;
 179         struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
 180         struct tegra_wm8903_platform_data *pdata = machine->pdata;
 181
 182         if (!(machine->gpio_requested & GPIO_HP_MUTE))
 183                 return 0;
 184
 185         gpio_set_value_cansleep(pdata->gpio_hp_mute,
 186                                 !SND_SOC_DAPM_EVENT_ON(event));
 187
 188         return 0;
 189 }
 190
 191 static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = {
 192         SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk),
 193         SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp),
 194         SND_SOC_DAPM_MIC("Mic Jack", NULL),
 195 };
 196
 197 static const struct snd_soc_dapm_route harmony_audio_map[] = {
 198         {"Headphone Jack", NULL, "HPOUTR"},
 199         {"Headphone Jack", NULL, "HPOUTL"},
 200         {"Int Spk", NULL, "ROP"},
 201         {"Int Spk", NULL, "RON"},
 202         {"Int Spk", NULL, "LOP"},
 203         {"Int Spk", NULL, "LON"},
 204         {"Mic Bias", NULL, "Mic Jack"},
 205         {"IN1L", NULL, "Mic Bias"},
 206 };
 207
 208 static const struct snd_soc_dapm_route seaboard_audio_map[] = {
 209         {"Headphone Jack", NULL, "HPOUTR"},
 210         {"Headphone Jack", NULL, "HPOUTL"},
 211         {"Int Spk", NULL, "ROP"},
 212         {"Int Spk", NULL, "RON"},
 213         {"Int Spk", NULL, "LOP"},
 214         {"Int Spk", NULL, "LON"},
 215         {"Mic Bias", NULL, "Mic Jack"},
 216         {"IN1R", NULL, "Mic Bias"},
 217 };
 218
 219 static const struct snd_soc_dapm_route kaen_audio_map[] = {
 220         {"Headphone Jack", NULL, "HPOUTR"},
 221         {"Headphone Jack", NULL, "HPOUTL"},
 222         {"Int Spk", NULL, "ROP"},
 223         {"Int Spk", NULL, "RON"},
 224         {"Int Spk", NULL, "LOP"},
 225         {"Int Spk", NULL, "LON"},
 226         {"Mic Bias", NULL, "Mic Jack"},
 227         {"IN2R", NULL, "Mic Bias"},
 228 };
 229
 230 static const struct snd_soc_dapm_route aebl_audio_map[] = {
 231         {"Headphone Jack", NULL, "HPOUTR"},
 232         {"Headphone Jack", NULL, "HPOUTL"},
 233         {"Int Spk", NULL, "LINEOUTR"},
 234         {"Int Spk", NULL, "LINEOUTL"},
 235         {"Mic Bias", NULL, "Mic Jack"},
 236         {"IN1R", NULL, "Mic Bias"},
 237 };
 238
 239 static const struct snd_kcontrol_new tegra_wm8903_controls[] = {
 240         SOC_DAPM_PIN_SWITCH("Int Spk"),
 241 };
 242
 243 static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
 244 {
 245         struct snd_soc_codec *codec = rtd->codec;
 246         struct snd_soc_dapm_context *dapm = &codec->dapm;
 247         struct snd_soc_card *card = codec->card;
 248         struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
 249         struct tegra_wm8903_platform_data *pdata = machine->pdata;
 250         int ret;
 251
 252         ret = tegra_das_connect_dap_to_dac(TEGRA_DAS_DAP_ID_1,
 253                                            TEGRA_DAS_DAP_SEL_DAC1);
 254         if (ret) {
 255                 dev_err(card->dev, "Can't set up DAS DAP connection\n");
 256                 return ret;
 257         }
 258         ret = tegra_das_connect_dac_to_dap(TEGRA_DAS_DAC_ID_1,
 259                                            TEGRA_DAS_DAC_SEL_DAP1);
 260         if (ret) {
 261                 dev_err(card->dev, "Can't set up DAS DAC connection\n");
 262                 return ret;
 263         }
 264
 265         if (gpio_is_valid(pdata->gpio_spkr_en)) {
 266                 ret = gpio_request(pdata->gpio_spkr_en, "spkr_en");
 267                 if (ret) {
 268                         dev_err(card->dev, "cannot get spkr_en gpio\n");
 269                         return ret;
 270                 }
 271                 machine->gpio_requested |= GPIO_SPKR_EN;
 272
 273                 gpio_direction_output(pdata->gpio_spkr_en, 0);
 274         }
 275
 276         if (gpio_is_valid(pdata->gpio_hp_mute)) {
 277                 ret = gpio_request(pdata->gpio_hp_mute, "hp_mute");
 278                 if (ret) {
 279                         dev_err(card->dev, "cannot get hp_mute gpio\n");
 280                         return ret;
 281                 }
 282                 machine->gpio_requested |= GPIO_HP_MUTE;
 283
 284                 gpio_direction_output(pdata->gpio_hp_mute, 1);
 285         }
 286
 287         if (gpio_is_valid(pdata->gpio_int_mic_en)) {
 288                 ret = gpio_request(pdata->gpio_int_mic_en, "int_mic_en");
 289                 if (ret) {
 290                         dev_err(card->dev, "cannot get int_mic_en gpio\n");
 291                         return ret;
 292                 }
 293                 machine->gpio_requested |= GPIO_INT_MIC_EN;
 294
 295                 /* Disable int mic; enable signal is active-high */
 296                 gpio_direction_output(pdata->gpio_int_mic_en, 0);
 297         }
 298
 299         if (gpio_is_valid(pdata->gpio_ext_mic_en)) {
 300                 ret = gpio_request(pdata->gpio_ext_mic_en, "ext_mic_en");
 301                 if (ret) {
 302                         dev_err(card->dev, "cannot get ext_mic_en gpio\n");
 303                         return ret;
 304                 }
 305                 machine->gpio_requested |= GPIO_EXT_MIC_EN;
 306
 307                 /* Enable ext mic; enable signal is active-low */
 308                 gpio_direction_output(pdata->gpio_ext_mic_en, 0);
 309         }
 310
 311         if (gpio_is_valid(pdata->gpio_hp_det)) {
 312                 tegra_wm8903_hp_jack_gpio.gpio = pdata->gpio_hp_det;
 313                 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
 314                                 &tegra_wm8903_hp_jack);
 315                 snd_soc_jack_add_pins(&tegra_wm8903_hp_jack,
 316                                         ARRAY_SIZE(tegra_wm8903_hp_jack_pins),
 317                                         tegra_wm8903_hp_jack_pins);
 318                 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
 319                                         1,
 320                                         &tegra_wm8903_hp_jack_gpio);
 321                 machine->gpio_requested |= GPIO_HP_DET;
 322         }
 323
 324         snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
 325                          &tegra_wm8903_mic_jack);
 326         snd_soc_jack_add_pins(&tegra_wm8903_mic_jack,
 327                               ARRAY_SIZE(tegra_wm8903_mic_jack_pins),
 328                               tegra_wm8903_mic_jack_pins);
 329         wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
 330                                 0);
 331
 332         snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
 333
 334         /* FIXME: Calculate automatically based on DAPM routes? */
 335         if (!machine_is_harmony())
 336                 snd_soc_dapm_nc_pin(dapm, "IN1L");
 337         if (!machine_is_seaboard() && !machine_is_aebl())
 338                 snd_soc_dapm_nc_pin(dapm, "IN1R");
 339         snd_soc_dapm_nc_pin(dapm, "IN2L");
 340         if (!machine_is_kaen())
 341                 snd_soc_dapm_nc_pin(dapm, "IN2R");
 342         snd_soc_dapm_nc_pin(dapm, "IN3L");
 343         snd_soc_dapm_nc_pin(dapm, "IN3R");
 344
 345         if (machine_is_aebl()) {
 346                 snd_soc_dapm_nc_pin(dapm, "LON");
 347                 snd_soc_dapm_nc_pin(dapm, "RON");
 348                 snd_soc_dapm_nc_pin(dapm, "ROP");
 349                 snd_soc_dapm_nc_pin(dapm, "LOP");
 350         } else {
 351                 snd_soc_dapm_nc_pin(dapm, "LINEOUTR");
 352                 snd_soc_dapm_nc_pin(dapm, "LINEOUTL");
 353         }
 354
 355         return 0;
 356 }
 357
 358 static struct snd_soc_dai_link tegra_wm8903_dai = {
 359         .name = "WM8903",
 360         .stream_name = "WM8903 PCM",
 361         .codec_name = "wm8903.0-001a",
 362         .platform_name = "tegra-pcm-audio",
 363         .cpu_dai_name = "tegra-i2s.0",
 364         .codec_dai_name = "wm8903-hifi",
 365         .init = tegra_wm8903_init,
 366         .ops = &tegra_wm8903_ops,
 367 };
 368
 369 static struct snd_soc_card snd_soc_tegra_wm8903 = {
 370         .name = "tegra-wm8903",
 371         .dai_link = &tegra_wm8903_dai,
 372         .num_links = 1,
 373
 374         .controls = tegra_wm8903_controls,
 375         .num_controls = ARRAY_SIZE(tegra_wm8903_controls),
 376         .dapm_widgets = tegra_wm8903_dapm_widgets,
 377         .num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets),
 378 };
 379
 380 static __devinit int tegra_wm8903_driver_probe(struct platform_device *pdev)
 381 {
 382         struct snd_soc_card *card = &snd_soc_tegra_wm8903;
 383         struct tegra_wm8903 *machine;
 384         struct tegra_wm8903_platform_data *pdata;
 385         int ret;
 386
 387         pdata = pdev->dev.platform_data;
 388         if (!pdata) {
 389                 dev_err(&pdev->dev, "No platform data supplied\n");
 390                 return -EINVAL;
 391         }
 392
 393         machine = kzalloc(sizeof(struct tegra_wm8903), GFP_KERNEL);
 394         if (!machine) {
 395                 dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n");
 396                 return -ENOMEM;
 397         }
 398
 399         machine->pdata = pdata;
 400
 401         ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
 402         if (ret)
 403                 goto err_free_machine;
 404
 405         card->dev = &pdev->dev;
 406         platform_set_drvdata(pdev, card);
 407         snd_soc_card_set_drvdata(card, machine);
 408
 409         if (machine_is_harmony()) {
 410                 card->dapm_routes = harmony_audio_map;
 411                 card->num_dapm_routes = ARRAY_SIZE(harmony_audio_map);
 412         } else if (machine_is_seaboard()) {
 413                 card->dapm_routes = seaboard_audio_map;
 414                 card->num_dapm_routes = ARRAY_SIZE(seaboard_audio_map);
 415         } else if (machine_is_kaen()) {
 416                 card->dapm_routes = kaen_audio_map;
 417                 card->num_dapm_routes = ARRAY_SIZE(kaen_audio_map);
 418         } else {
 419                 card->dapm_routes = aebl_audio_map;
 420                 card->num_dapm_routes = ARRAY_SIZE(aebl_audio_map);
 421         }
 422
 423         ret = snd_soc_register_card(card);
 424         if (ret) {
 425                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
 426                         ret);
 427                 goto err_fini_utils;
 428         }
 429
 430         return 0;
 431
 432 err_fini_utils:
 433         tegra_asoc_utils_fini(&machine->util_data);
 434 err_free_machine:
 435         kfree(machine);
 436         return ret;
 437 }
 438
 439 static int __devexit tegra_wm8903_driver_remove(struct platform_device *pdev)
 440 {
 441         struct snd_soc_card *card = platform_get_drvdata(pdev);
 442         struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
 443         struct tegra_wm8903_platform_data *pdata = machine->pdata;
 444
 445         if (machine->gpio_requested & GPIO_HP_DET)
 446                 snd_soc_jack_free_gpios(&tegra_wm8903_hp_jack,
 447                                         1,
 448                                         &tegra_wm8903_hp_jack_gpio);
 449         if (machine->gpio_requested & GPIO_EXT_MIC_EN)
 450                 gpio_free(pdata->gpio_ext_mic_en);
 451         if (machine->gpio_requested & GPIO_INT_MIC_EN)
 452                 gpio_free(pdata->gpio_int_mic_en);
 453         if (machine->gpio_requested & GPIO_HP_MUTE)
 454                 gpio_free(pdata->gpio_hp_mute);
 455         if (machine->gpio_requested & GPIO_SPKR_EN)
 456                 gpio_free(pdata->gpio_spkr_en);
 457         machine->gpio_requested = 0;
 458
 459         snd_soc_unregister_card(card);
 460
 461         tegra_asoc_utils_fini(&machine->util_data);
 462
 463         kfree(machine);
 464
 465         return 0;
 466 }
 467
 468 static struct platform_driver tegra_wm8903_driver = {
 469         .driver = {
 470                 .name = DRV_NAME,
 471                 .owner = THIS_MODULE,
 472                 .pm = &snd_soc_pm_ops,
 473         },
 474         .probe = tegra_wm8903_driver_probe,
 475         .remove = __devexit_p(tegra_wm8903_driver_remove),
 476 };
 477
 478 static int __init tegra_wm8903_modinit(void)
 479 {
 480         return platform_driver_register(&tegra_wm8903_driver);
 481 }
 482 module_init(tegra_wm8903_modinit);
 483
 484 static void __exit tegra_wm8903_modexit(void)
 485 {
 486         platform_driver_unregister(&tegra_wm8903_driver);
 487 }
 488 module_exit(tegra_wm8903_modexit);
 489
 490 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
 491 MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
 492 MODULE_LICENSE("GPL");
 493 MODULE_ALIAS("platform:" DRV_NAME);