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         if (gpio_is_valid(pdata->gpio_spkr_en)) {
 253                 ret = gpio_request(pdata->gpio_spkr_en, "spkr_en");
 254                 if (ret) {
 255                         dev_err(card->dev, "cannot get spkr_en gpio\n");
 256                         return ret;
 257                 }
 258                 machine->gpio_requested |= GPIO_SPKR_EN;
 259
 260                 gpio_direction_output(pdata->gpio_spkr_en, 0);
 261         }
 262
 263         if (gpio_is_valid(pdata->gpio_hp_mute)) {
 264                 ret = gpio_request(pdata->gpio_hp_mute, "hp_mute");
 265                 if (ret) {
 266                         dev_err(card->dev, "cannot get hp_mute gpio\n");
 267                         return ret;
 268                 }
 269                 machine->gpio_requested |= GPIO_HP_MUTE;
 270
 271                 gpio_direction_output(pdata->gpio_hp_mute, 1);
 272         }
 273
 274         if (gpio_is_valid(pdata->gpio_int_mic_en)) {
 275                 ret = gpio_request(pdata->gpio_int_mic_en, "int_mic_en");
 276                 if (ret) {
 277                         dev_err(card->dev, "cannot get int_mic_en gpio\n");
 278                         return ret;
 279                 }
 280                 machine->gpio_requested |= GPIO_INT_MIC_EN;
 281
 282                 /* Disable int mic; enable signal is active-high */
 283                 gpio_direction_output(pdata->gpio_int_mic_en, 0);
 284         }
 285
 286         if (gpio_is_valid(pdata->gpio_ext_mic_en)) {
 287                 ret = gpio_request(pdata->gpio_ext_mic_en, "ext_mic_en");
 288                 if (ret) {
 289                         dev_err(card->dev, "cannot get ext_mic_en gpio\n");
 290                         return ret;
 291                 }
 292                 machine->gpio_requested |= GPIO_EXT_MIC_EN;
 293
 294                 /* Enable ext mic; enable signal is active-low */
 295                 gpio_direction_output(pdata->gpio_ext_mic_en, 0);
 296         }
 297
 298         if (gpio_is_valid(pdata->gpio_hp_det)) {
 299                 tegra_wm8903_hp_jack_gpio.gpio = pdata->gpio_hp_det;
 300                 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
 301                                 &tegra_wm8903_hp_jack);
 302                 snd_soc_jack_add_pins(&tegra_wm8903_hp_jack,
 303                                         ARRAY_SIZE(tegra_wm8903_hp_jack_pins),
 304                                         tegra_wm8903_hp_jack_pins);
 305                 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
 306                                         1,
 307                                         &tegra_wm8903_hp_jack_gpio);
 308                 machine->gpio_requested |= GPIO_HP_DET;
 309         }
 310
 311         snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
 312                          &tegra_wm8903_mic_jack);
 313         snd_soc_jack_add_pins(&tegra_wm8903_mic_jack,
 314                               ARRAY_SIZE(tegra_wm8903_mic_jack_pins),
 315                               tegra_wm8903_mic_jack_pins);
 316         wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
 317                                 0);
 318
 319         snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
 320
 321         /* FIXME: Calculate automatically based on DAPM routes? */
 322         if (!machine_is_harmony())
 323                 snd_soc_dapm_nc_pin(dapm, "IN1L");
 324         if (!machine_is_seaboard() && !machine_is_aebl())
 325                 snd_soc_dapm_nc_pin(dapm, "IN1R");
 326         snd_soc_dapm_nc_pin(dapm, "IN2L");
 327         if (!machine_is_kaen())
 328                 snd_soc_dapm_nc_pin(dapm, "IN2R");
 329         snd_soc_dapm_nc_pin(dapm, "IN3L");
 330         snd_soc_dapm_nc_pin(dapm, "IN3R");
 331
 332         if (machine_is_aebl()) {
 333                 snd_soc_dapm_nc_pin(dapm, "LON");
 334                 snd_soc_dapm_nc_pin(dapm, "RON");
 335                 snd_soc_dapm_nc_pin(dapm, "ROP");
 336                 snd_soc_dapm_nc_pin(dapm, "LOP");
 337         } else {
 338                 snd_soc_dapm_nc_pin(dapm, "LINEOUTR");
 339                 snd_soc_dapm_nc_pin(dapm, "LINEOUTL");
 340         }
 341
 342         snd_soc_dapm_sync(dapm);
 343
 344         return 0;
 345 }
 346
 347 static struct snd_soc_dai_link tegra_wm8903_dai = {
 348         .name = "WM8903",
 349         .stream_name = "WM8903 PCM",
 350         .codec_name = "wm8903.0-001a",
 351         .platform_name = "tegra-pcm-audio",
 352         .cpu_dai_name = "tegra-i2s.0",
 353         .codec_dai_name = "wm8903-hifi",
 354         .init = tegra_wm8903_init,
 355         .ops = &tegra_wm8903_ops,
 356 };
 357
 358 static struct snd_soc_card snd_soc_tegra_wm8903 = {
 359         .name = "tegra-wm8903",
 360         .dai_link = &tegra_wm8903_dai,
 361         .num_links = 1,
 362
 363         .controls = tegra_wm8903_controls,
 364         .num_controls = ARRAY_SIZE(tegra_wm8903_controls),
 365         .dapm_widgets = tegra_wm8903_dapm_widgets,
 366         .num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets),
 367 };
 368
 369 static __devinit int tegra_wm8903_driver_probe(struct platform_device *pdev)
 370 {
 371         struct snd_soc_card *card = &snd_soc_tegra_wm8903;
 372         struct tegra_wm8903 *machine;
 373         struct tegra_wm8903_platform_data *pdata;
 374         int ret;
 375
 376         pdata = pdev->dev.platform_data;
 377         if (!pdata) {
 378                 dev_err(&pdev->dev, "No platform data supplied\n");
 379                 return -EINVAL;
 380         }
 381
 382         machine = kzalloc(sizeof(struct tegra_wm8903), GFP_KERNEL);
 383         if (!machine) {
 384                 dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n");
 385                 return -ENOMEM;
 386         }
 387
 388         machine->pdata = pdata;
 389
 390         ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
 391         if (ret)
 392                 goto err_free_machine;
 393
 394         card->dev = &pdev->dev;
 395         platform_set_drvdata(pdev, card);
 396         snd_soc_card_set_drvdata(card, machine);
 397
 398         if (machine_is_harmony()) {
 399                 card->dapm_routes = harmony_audio_map;
 400                 card->num_dapm_routes = ARRAY_SIZE(harmony_audio_map);
 401         } else if (machine_is_seaboard()) {
 402                 card->dapm_routes = seaboard_audio_map;
 403                 card->num_dapm_routes = ARRAY_SIZE(seaboard_audio_map);
 404         } else if (machine_is_kaen()) {
 405                 card->dapm_routes = kaen_audio_map;
 406                 card->num_dapm_routes = ARRAY_SIZE(kaen_audio_map);
 407         } else {
 408                 card->dapm_routes = aebl_audio_map;
 409                 card->num_dapm_routes = ARRAY_SIZE(aebl_audio_map);
 410         }
 411
 412         ret = snd_soc_register_card(card);
 413         if (ret) {
 414                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
 415                         ret);
 416                 goto err_fini_utils;
 417         }
 418
 419         return 0;
 420
 421 err_fini_utils:
 422         tegra_asoc_utils_fini(&machine->util_data);
 423 err_free_machine:
 424         kfree(machine);
 425         return ret;
 426 }
 427
 428 static int __devexit tegra_wm8903_driver_remove(struct platform_device *pdev)
 429 {
 430         struct snd_soc_card *card = platform_get_drvdata(pdev);
 431         struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
 432         struct tegra_wm8903_platform_data *pdata = machine->pdata;
 433
 434         if (machine->gpio_requested & GPIO_HP_DET)
 435                 snd_soc_jack_free_gpios(&tegra_wm8903_hp_jack,
 436                                         1,
 437                                         &tegra_wm8903_hp_jack_gpio);
 438         if (machine->gpio_requested & GPIO_EXT_MIC_EN)
 439                 gpio_free(pdata->gpio_ext_mic_en);
 440         if (machine->gpio_requested & GPIO_INT_MIC_EN)
 441                 gpio_free(pdata->gpio_int_mic_en);
 442         if (machine->gpio_requested & GPIO_HP_MUTE)
 443                 gpio_free(pdata->gpio_hp_mute);
 444         if (machine->gpio_requested & GPIO_SPKR_EN)
 445                 gpio_free(pdata->gpio_spkr_en);
 446         machine->gpio_requested = 0;
 447
 448         snd_soc_unregister_card(card);
 449
 450         tegra_asoc_utils_fini(&machine->util_data);
 451
 452         kfree(machine);
 453
 454         return 0;
 455 }
 456
 457 static struct platform_driver tegra_wm8903_driver = {
 458         .driver = {
 459                 .name = DRV_NAME,
 460                 .owner = THIS_MODULE,
 461                 .pm = &snd_soc_pm_ops,
 462         },
 463         .probe = tegra_wm8903_driver_probe,
 464         .remove = __devexit_p(tegra_wm8903_driver_remove),
 465 };
 466
 467 static int __init tegra_wm8903_modinit(void)
 468 {
 469         return platform_driver_register(&tegra_wm8903_driver);
 470 }
 471 module_init(tegra_wm8903_modinit);
 472
 473 static void __exit tegra_wm8903_modexit(void)
 474 {
 475         platform_driver_unregister(&tegra_wm8903_driver);
 476 }
 477 module_exit(tegra_wm8903_modexit);
 478
 479 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
 480 MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
 481 MODULE_LICENSE("GPL");
 482 MODULE_ALIAS("platform:" DRV_NAME);