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
  60 struct tegra_wm8903 {
  61         struct tegra_asoc_utils_data util_data;
  62         struct tegra_wm8903_platform_data *pdata;
  63         int gpio_requested;
  64 };
  65
  66 static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream,
  67                                         struct snd_pcm_hw_params *params)
  68 {
  69         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  70         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  71         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  72         struct snd_soc_codec *codec = rtd->codec;
  73         struct snd_soc_card *card = codec->card;
  74         struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
  75         int srate, mclk, mclk_change;
  76         int err;
  77
  78         srate = params_rate(params);
  79         switch (srate) {
  80         case 64000:
  81         case 88200:
  82         case 96000:
  83                 mclk = 128 * srate;
  84                 break;
  85         default:
  86                 mclk = 256 * srate;
  87                 break;
  88         }
  89         /* FIXME: Codec only requires >= 3MHz if OSR==0 */
  90         while (mclk < 6000000)
  91                 mclk *= 2;
  92
  93         err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk,
  94                                         &mclk_change);
  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         if (mclk_change) {
 119                 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
 120                                              SND_SOC_CLOCK_IN);
 121                 if (err < 0) {
 122                         dev_err(card->dev, "codec_dai clock not set\n");
 123                         return err;
 124                 }
 125         }
 126
 127         return 0;
 128 }
 129
 130 static struct snd_soc_ops tegra_wm8903_ops = {
 131         .hw_params = tegra_wm8903_hw_params,
 132 };
 133
 134 static struct snd_soc_jack tegra_wm8903_hp_jack;
 135
 136 static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = {
 137         {
 138                 .pin = "Headphone Jack",
 139                 .mask = SND_JACK_HEADPHONE,
 140         },
 141 };
 142
 143 static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = {
 144         .name = "headphone detect",
 145         .report = SND_JACK_HEADPHONE,
 146         .debounce_time = 150,
 147         .invert = 1,
 148 };
 149
 150 static struct snd_soc_jack tegra_wm8903_mic_jack;
 151
 152 static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
 153         {
 154                 .pin = "Mic Jack",
 155                 .mask = SND_JACK_MICROPHONE,
 156         },
 157 };
 158
 159 static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w,
 160                                         struct snd_kcontrol *k, int event)
 161 {
 162         struct snd_soc_codec *codec = w->codec;
 163         struct snd_soc_card *card = codec->card;
 164         struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
 165         struct tegra_wm8903_platform_data *pdata = machine->pdata;
 166
 167         if (!(machine->gpio_requested & GPIO_SPKR_EN))
 168                 return 0;
 169
 170         gpio_set_value_cansleep(pdata->gpio_spkr_en,
 171                                 SND_SOC_DAPM_EVENT_ON(event));
 172
 173         return 0;
 174 }
 175
 176 static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w,
 177                                         struct snd_kcontrol *k, int event)
 178 {
 179         struct snd_soc_codec *codec = w->codec;
 180         struct snd_soc_card *card = codec->card;
 181         struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
 182         struct tegra_wm8903_platform_data *pdata = machine->pdata;
 183
 184         if (!(machine->gpio_requested & GPIO_HP_MUTE))
 185                 return 0;
 186
 187         gpio_set_value_cansleep(pdata->gpio_hp_mute,
 188                                 !SND_SOC_DAPM_EVENT_ON(event));
 189
 190         return 0;
 191 }
 192
 193 static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = {
 194         SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk),
 195         SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp),
 196         SND_SOC_DAPM_MIC("Mic Jack", NULL),
 197 };
 198
 199 static const struct snd_soc_dapm_route harmony_audio_map[] = {
 200         {"Headphone Jack", NULL, "HPOUTR"},
 201         {"Headphone Jack", NULL, "HPOUTL"},
 202         {"Int Spk", NULL, "ROP"},
 203         {"Int Spk", NULL, "RON"},
 204         {"Int Spk", NULL, "LOP"},
 205         {"Int Spk", NULL, "LON"},
 206         {"Mic Bias", NULL, "Mic Jack"},
 207         {"IN1L", NULL, "Mic Bias"},
 208 };
 209
 210 static const struct snd_soc_dapm_route seaboard_audio_map[] = {
 211         {"Headphone Jack", NULL, "HPOUTR"},
 212         {"Headphone Jack", NULL, "HPOUTL"},
 213         {"Int Spk", NULL, "ROP"},
 214         {"Int Spk", NULL, "RON"},
 215         {"Int Spk", NULL, "LOP"},
 216         {"Int Spk", NULL, "LON"},
 217         {"Mic Bias", NULL, "Mic Jack"},
 218         {"IN1R", NULL, "Mic Bias"},
 219 };
 220
 221 static const struct snd_soc_dapm_route kaen_audio_map[] = {
 222         {"Headphone Jack", NULL, "HPOUTR"},
 223         {"Headphone Jack", NULL, "HPOUTL"},
 224         {"Int Spk", NULL, "ROP"},
 225         {"Int Spk", NULL, "RON"},
 226         {"Int Spk", NULL, "LOP"},
 227         {"Int Spk", NULL, "LON"},
 228         {"Mic Bias", NULL, "Mic Jack"},
 229         {"IN2R", NULL, "Mic Bias"},
 230 };
 231
 232 static const struct snd_soc_dapm_route aebl_audio_map[] = {
 233         {"Headphone Jack", NULL, "HPOUTR"},
 234         {"Headphone Jack", NULL, "HPOUTL"},
 235         {"Int Spk", NULL, "LINEOUTR"},
 236         {"Int Spk", NULL, "LINEOUTL"},
 237         {"Mic Bias", NULL, "Mic Jack"},
 238         {"IN1R", NULL, "Mic Bias"},
 239 };
 240
 241 static const struct snd_kcontrol_new tegra_wm8903_controls[] = {
 242         SOC_DAPM_PIN_SWITCH("Int Spk"),
 243 };
 244
 245 static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
 246 {
 247         struct snd_soc_codec *codec = rtd->codec;
 248         struct snd_soc_dapm_context *dapm = &codec->dapm;
 249         struct snd_soc_card *card = codec->card;
 250         struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
 251         struct tegra_wm8903_platform_data *pdata = machine->pdata;
 252         int ret;
 253
 254         if (gpio_is_valid(pdata->gpio_spkr_en)) {
 255                 ret = gpio_request(pdata->gpio_spkr_en, "spkr_en");
 256                 if (ret) {
 257                         dev_err(card->dev, "cannot get spkr_en gpio\n");
 258                         return ret;
 259                 }
 260                 machine->gpio_requested |= GPIO_SPKR_EN;
 261
 262                 gpio_direction_output(pdata->gpio_spkr_en, 0);
 263         }
 264
 265         if (gpio_is_valid(pdata->gpio_hp_mute)) {
 266                 ret = gpio_request(pdata->gpio_hp_mute, "hp_mute");
 267                 if (ret) {
 268                         dev_err(card->dev, "cannot get hp_mute gpio\n");
 269                         return ret;
 270                 }
 271                 machine->gpio_requested |= GPIO_HP_MUTE;
 272
 273                 gpio_direction_output(pdata->gpio_hp_mute, 0);
 274         }
 275
 276         if (gpio_is_valid(pdata->gpio_int_mic_en)) {
 277                 ret = gpio_request(pdata->gpio_int_mic_en, "int_mic_en");
 278                 if (ret) {
 279                         dev_err(card->dev, "cannot get int_mic_en gpio\n");
 280                         return ret;
 281                 }
 282                 machine->gpio_requested |= GPIO_INT_MIC_EN;
 283
 284                 /* Disable int mic; enable signal is active-high */
 285                 gpio_direction_output(pdata->gpio_int_mic_en, 0);
 286         }
 287
 288         if (gpio_is_valid(pdata->gpio_ext_mic_en)) {
 289                 ret = gpio_request(pdata->gpio_ext_mic_en, "ext_mic_en");
 290                 if (ret) {
 291                         dev_err(card->dev, "cannot get ext_mic_en gpio\n");
 292                         return ret;
 293                 }
 294                 machine->gpio_requested |= GPIO_EXT_MIC_EN;
 295
 296                 /* Enable ext mic; enable signal is active-low */
 297                 gpio_direction_output(pdata->gpio_ext_mic_en, 0);
 298         }
 299
 300         ret = snd_soc_add_controls(codec, tegra_wm8903_controls,
 301                                    ARRAY_SIZE(tegra_wm8903_controls));
 302         if (ret < 0)
 303                 return ret;
 304
 305         snd_soc_dapm_new_controls(dapm, tegra_wm8903_dapm_widgets,
 306                                         ARRAY_SIZE(tegra_wm8903_dapm_widgets));
 307
 308         if (machine_is_harmony() || machine_is_ventana()) {
 309                 snd_soc_dapm_add_routes(dapm, harmony_audio_map,
 310                                         ARRAY_SIZE(harmony_audio_map));
 311         } else if (machine_is_seaboard()) {
 312                 snd_soc_dapm_add_routes(dapm, seaboard_audio_map,
 313                                         ARRAY_SIZE(seaboard_audio_map));
 314         } else if (machine_is_kaen()) {
 315                 snd_soc_dapm_add_routes(dapm, kaen_audio_map,
 316                                         ARRAY_SIZE(kaen_audio_map));
 317         } else {
 318                 snd_soc_dapm_add_routes(dapm, aebl_audio_map,
 319                                         ARRAY_SIZE(aebl_audio_map));
 320         }
 321
 322         if (gpio_is_valid(pdata->gpio_hp_det)) {
 323                 tegra_wm8903_hp_jack_gpio.gpio = pdata->gpio_hp_det;
 324                 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
 325                                 &tegra_wm8903_hp_jack);
 326                 snd_soc_jack_add_pins(&tegra_wm8903_hp_jack,
 327                                         ARRAY_SIZE(tegra_wm8903_hp_jack_pins),
 328                                         tegra_wm8903_hp_jack_pins);
 329                 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
 330                                         1,
 331                                         &tegra_wm8903_hp_jack_gpio);
 332         }
 333
 334         snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
 335                          &tegra_wm8903_mic_jack);
 336         snd_soc_jack_add_pins(&tegra_wm8903_mic_jack,
 337                               ARRAY_SIZE(tegra_wm8903_mic_jack_pins),
 338                               tegra_wm8903_mic_jack_pins);
 339         wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
 340                                 0);
 341
 342         snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
 343
 344         /* FIXME: Calculate automatically based on DAPM routes? */
 345         if (!machine_is_harmony() && !machine_is_ventana())
 346                 snd_soc_dapm_nc_pin(dapm, "IN1L");
 347         if (!machine_is_seaboard() && !machine_is_aebl())
 348                 snd_soc_dapm_nc_pin(dapm, "IN1R");
 349         snd_soc_dapm_nc_pin(dapm, "IN2L");
 350         if (!machine_is_kaen())
 351                 snd_soc_dapm_nc_pin(dapm, "IN2R");
 352         snd_soc_dapm_nc_pin(dapm, "IN3L");
 353         snd_soc_dapm_nc_pin(dapm, "IN3R");
 354
 355         if (machine_is_aebl()) {
 356                 snd_soc_dapm_nc_pin(dapm, "LON");
 357                 snd_soc_dapm_nc_pin(dapm, "RON");
 358                 snd_soc_dapm_nc_pin(dapm, "ROP");
 359                 snd_soc_dapm_nc_pin(dapm, "LOP");
 360         } else {
 361                 snd_soc_dapm_nc_pin(dapm, "LINEOUTR");
 362                 snd_soc_dapm_nc_pin(dapm, "LINEOUTL");
 363         }
 364
 365         snd_soc_dapm_sync(dapm);
 366
 367         return 0;
 368 }
 369
 370 static struct snd_soc_dai_link tegra_wm8903_dai = {
 371         .name = "WM8903",
 372         .stream_name = "WM8903 PCM",
 373         .codec_name = "wm8903.0-001a",
 374         .platform_name = "tegra-pcm-audio",
 375         .cpu_dai_name = "tegra-i2s.0",
 376         .codec_dai_name = "wm8903-hifi",
 377         .init = tegra_wm8903_init,
 378         .ops = &tegra_wm8903_ops,
 379 };
 380
 381 static struct snd_soc_card snd_soc_tegra_wm8903 = {
 382         .name = "tegra-wm8903",
 383         .dai_link = &tegra_wm8903_dai,
 384         .num_links = 1,
 385 };
 386
 387 static __devinit int tegra_wm8903_driver_probe(struct platform_device *pdev)
 388 {
 389         struct snd_soc_card *card = &snd_soc_tegra_wm8903;
 390         struct tegra_wm8903 *machine;
 391         struct tegra_wm8903_platform_data *pdata;
 392         int ret;
 393
 394         pdata = pdev->dev.platform_data;
 395         if (!pdata) {
 396                 dev_err(&pdev->dev, "No platform data supplied\n");
 397                 return -EINVAL;
 398         }
 399
 400         machine = kzalloc(sizeof(struct tegra_wm8903), GFP_KERNEL);
 401         if (!machine) {
 402                 dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n");
 403                 return -ENOMEM;
 404         }
 405
 406         machine->pdata = pdata;
 407
 408         ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
 409         if (ret)
 410                 goto err_free_machine;
 411
 412         card->dev = &pdev->dev;
 413         platform_set_drvdata(pdev, card);
 414         snd_soc_card_set_drvdata(card, machine);
 415
 416         ret = snd_soc_register_card(card);
 417         if (ret) {
 418                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
 419                         ret);
 420                 goto err_clear_drvdata;
 421         }
 422
 423         return 0;
 424
 425 err_clear_drvdata:
 426         snd_soc_card_set_drvdata(card, NULL);
 427         platform_set_drvdata(pdev, NULL);
 428         card->dev = NULL;
 429         tegra_asoc_utils_fini(&machine->util_data);
 430 err_free_machine:
 431         kfree(machine);
 432         return ret;
 433 }
 434
 435 static int __devexit tegra_wm8903_driver_remove(struct platform_device *pdev)
 436 {
 437         struct snd_soc_card *card = platform_get_drvdata(pdev);
 438         struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
 439         struct tegra_wm8903_platform_data *pdata = machine->pdata;
 440
 441         snd_soc_unregister_card(card);
 442
 443         snd_soc_card_set_drvdata(card, NULL);
 444         platform_set_drvdata(pdev, NULL);
 445         card->dev = NULL;
 446
 447         tegra_asoc_utils_fini(&machine->util_data);
 448
 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
 458         kfree(machine);
 459
 460         return 0;
 461 }
 462
 463 static struct platform_driver tegra_wm8903_driver = {
 464         .driver = {
 465                 .name = DRV_NAME,
 466                 .owner = THIS_MODULE,
 467                 .pm = &snd_soc_pm_ops,
 468         },
 469         .probe = tegra_wm8903_driver_probe,
 470         .remove = __devexit_p(tegra_wm8903_driver_remove),
 471 };
 472
 473 static int __init tegra_wm8903_modinit(void)
 474 {
 475         return platform_driver_register(&tegra_wm8903_driver);
 476 }
 477 module_init(tegra_wm8903_modinit);
 478
 479 static void __exit tegra_wm8903_modexit(void)
 480 {
 481         platform_driver_unregister(&tegra_wm8903_driver);
 482 }
 483 module_exit(tegra_wm8903_modexit);
 484
 485 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
 486 MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
 487 MODULE_LICENSE("GPL");
 488 MODULE_ALIAS("platform:" DRV_NAME);