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;
  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         if (err < 0) {
  95                 dev_err(card->dev, "Can't configure clocks\n");
  96                 return err;
  97         }
  98
  99         err = snd_soc_dai_set_fmt(codec_dai,
 100                                         SND_SOC_DAIFMT_I2S |
 101                                         SND_SOC_DAIFMT_NB_NF |
 102                                         SND_SOC_DAIFMT_CBS_CFS);
 103         if (err < 0) {
 104                 dev_err(card->dev, "codec_dai fmt not set\n");
 105                 return err;
 106         }
 107
 108         err = snd_soc_dai_set_fmt(cpu_dai,
 109                                         SND_SOC_DAIFMT_I2S |
 110                                         SND_SOC_DAIFMT_NB_NF |
 111                                         SND_SOC_DAIFMT_CBS_CFS);
 112         if (err < 0) {
 113                 dev_err(card->dev, "cpu_dai fmt not set\n");
 114                 return err;
 115         }
 116
 117         err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
 118                                         SND_SOC_CLOCK_IN);
 119         if (err < 0) {
 120                 dev_err(card->dev, "codec_dai clock not set\n");
 121                 return err;
 122         }
 123
 124         return 0;
 125 }
 126
 127 static struct snd_soc_ops tegra_wm8903_ops = {
 128         .hw_params = tegra_wm8903_hw_params,
 129 };
 130
 131 static struct snd_soc_jack tegra_wm8903_hp_jack;
 132
 133 static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = {
 134         {
 135                 .pin = "Headphone Jack",
 136                 .mask = SND_JACK_HEADPHONE,
 137         },
 138 };
 139
 140 static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = {
 141         .name = "headphone detect",
 142         .report = SND_JACK_HEADPHONE,
 143         .debounce_time = 150,
 144         .invert = 1,
 145 };
 146
 147 static struct snd_soc_jack tegra_wm8903_mic_jack;
 148
 149 static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
 150         {
 151                 .pin = "Mic Jack",
 152                 .mask = SND_JACK_MICROPHONE,
 153         },
 154 };
 155
 156 static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w,
 157                                         struct snd_kcontrol *k, int event)
 158 {
 159         struct snd_soc_dapm_context *dapm = w->dapm;
 160         struct snd_soc_card *card = dapm->card;
 161         struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
 162         struct tegra_wm8903_platform_data *pdata = machine->pdata;
 163
 164         if (!(machine->gpio_requested & GPIO_SPKR_EN))
 165                 return 0;
 166
 167         gpio_set_value_cansleep(pdata->gpio_spkr_en,
 168                                 SND_SOC_DAPM_EVENT_ON(event));
 169
 170         return 0;
 171 }
 172
 173 static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w,
 174                                         struct snd_kcontrol *k, int event)
 175 {
 176         struct snd_soc_dapm_context *dapm = w->dapm;
 177         struct snd_soc_card *card = dapm->card;
 178         struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
 179         struct tegra_wm8903_platform_data *pdata = machine->pdata;
 180
 181         if (!(machine->gpio_requested & GPIO_HP_MUTE))
 182                 return 0;
 183
 184         gpio_set_value_cansleep(pdata->gpio_hp_mute,
 185                                 !SND_SOC_DAPM_EVENT_ON(event));
 186
 187         return 0;
 188 }
 189
 190 static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = {
 191         SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk),
 192         SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp),
 193         SND_SOC_DAPM_MIC("Mic Jack", NULL),
 194 };
 195
 196 static const struct snd_soc_dapm_route harmony_audio_map[] = {
 197         {"Headphone Jack", NULL, "HPOUTR"},
 198         {"Headphone Jack", NULL, "HPOUTL"},
 199         {"Int Spk", NULL, "ROP"},
 200         {"Int Spk", NULL, "RON"},
 201         {"Int Spk", NULL, "LOP"},
 202         {"Int Spk", NULL, "LON"},
 203         {"Mic Bias", NULL, "Mic Jack"},
 204         {"IN1L", NULL, "Mic Bias"},
 205 };
 206
 207 static const struct snd_soc_dapm_route seaboard_audio_map[] = {
 208         {"Headphone Jack", NULL, "HPOUTR"},
 209         {"Headphone Jack", NULL, "HPOUTL"},
 210         {"Int Spk", NULL, "ROP"},
 211         {"Int Spk", NULL, "RON"},
 212         {"Int Spk", NULL, "LOP"},
 213         {"Int Spk", NULL, "LON"},
 214         {"Mic Bias", NULL, "Mic Jack"},
 215         {"IN1R", NULL, "Mic Bias"},
 216 };
 217
 218 static const struct snd_soc_dapm_route kaen_audio_map[] = {
 219         {"Headphone Jack", NULL, "HPOUTR"},
 220         {"Headphone Jack", NULL, "HPOUTL"},
 221         {"Int Spk", NULL, "ROP"},
 222         {"Int Spk", NULL, "RON"},
 223         {"Int Spk", NULL, "LOP"},
 224         {"Int Spk", NULL, "LON"},
 225         {"Mic Bias", NULL, "Mic Jack"},
 226         {"IN2R", NULL, "Mic Bias"},
 227 };
 228
 229 static const struct snd_soc_dapm_route aebl_audio_map[] = {
 230         {"Headphone Jack", NULL, "HPOUTR"},
 231         {"Headphone Jack", NULL, "HPOUTL"},
 232         {"Int Spk", NULL, "LINEOUTR"},
 233         {"Int Spk", NULL, "LINEOUTL"},
 234         {"Mic Bias", NULL, "Mic Jack"},
 235         {"IN1R", NULL, "Mic Bias"},
 236 };
 237
 238 static const struct snd_kcontrol_new tegra_wm8903_controls[] = {
 239         SOC_DAPM_PIN_SWITCH("Int Spk"),
 240 };
 241
 242 static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
 243 {
 244         struct snd_soc_codec *codec = rtd->codec;
 245         struct snd_soc_dapm_context *dapm = &codec->dapm;
 246         struct snd_soc_card *card = codec->card;
 247         struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
 248         struct tegra_wm8903_platform_data *pdata = machine->pdata;
 249         int ret;
 250
 251         if (gpio_is_valid(pdata->gpio_spkr_en)) {
 252                 ret = gpio_request(pdata->gpio_spkr_en, "spkr_en");
 253                 if (ret) {
 254                         dev_err(card->dev, "cannot get spkr_en gpio\n");
 255                         return ret;
 256                 }
 257                 machine->gpio_requested |= GPIO_SPKR_EN;
 258
 259                 gpio_direction_output(pdata->gpio_spkr_en, 0);
 260         }
 261
 262         if (gpio_is_valid(pdata->gpio_hp_mute)) {
 263                 ret = gpio_request(pdata->gpio_hp_mute, "hp_mute");
 264                 if (ret) {
 265                         dev_err(card->dev, "cannot get hp_mute gpio\n");
 266                         return ret;
 267                 }
 268                 machine->gpio_requested |= GPIO_HP_MUTE;
 269
 270                 gpio_direction_output(pdata->gpio_hp_mute, 0);
 271         }
 272
 273         if (gpio_is_valid(pdata->gpio_int_mic_en)) {
 274                 ret = gpio_request(pdata->gpio_int_mic_en, "int_mic_en");
 275                 if (ret) {
 276                         dev_err(card->dev, "cannot get int_mic_en gpio\n");
 277                         return ret;
 278                 }
 279                 machine->gpio_requested |= GPIO_INT_MIC_EN;
 280
 281                 /* Disable int mic; enable signal is active-high */
 282                 gpio_direction_output(pdata->gpio_int_mic_en, 0);
 283         }
 284
 285         if (gpio_is_valid(pdata->gpio_ext_mic_en)) {
 286                 ret = gpio_request(pdata->gpio_ext_mic_en, "ext_mic_en");
 287                 if (ret) {
 288                         dev_err(card->dev, "cannot get ext_mic_en gpio\n");
 289                         return ret;
 290                 }
 291                 machine->gpio_requested |= GPIO_EXT_MIC_EN;
 292
 293                 /* Enable ext mic; enable signal is active-low */
 294                 gpio_direction_output(pdata->gpio_ext_mic_en, 0);
 295         }
 296
 297         if (gpio_is_valid(pdata->gpio_hp_det)) {
 298                 tegra_wm8903_hp_jack_gpio.gpio = pdata->gpio_hp_det;
 299                 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
 300                                 &tegra_wm8903_hp_jack);
 301                 snd_soc_jack_add_pins(&tegra_wm8903_hp_jack,
 302                                         ARRAY_SIZE(tegra_wm8903_hp_jack_pins),
 303                                         tegra_wm8903_hp_jack_pins);
 304                 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
 305                                         1,
 306                                         &tegra_wm8903_hp_jack_gpio);
 307         }
 308
 309         snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
 310                          &tegra_wm8903_mic_jack);
 311         snd_soc_jack_add_pins(&tegra_wm8903_mic_jack,
 312                               ARRAY_SIZE(tegra_wm8903_mic_jack_pins),
 313                               tegra_wm8903_mic_jack_pins);
 314         wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
 315                                 0);
 316
 317         snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
 318
 319         /* FIXME: Calculate automatically based on DAPM routes? */
 320         if (!machine_is_harmony() && !machine_is_ventana())
 321                 snd_soc_dapm_nc_pin(dapm, "IN1L");
 322         if (!machine_is_seaboard() && !machine_is_aebl())
 323                 snd_soc_dapm_nc_pin(dapm, "IN1R");
 324         snd_soc_dapm_nc_pin(dapm, "IN2L");
 325         if (!machine_is_kaen())
 326                 snd_soc_dapm_nc_pin(dapm, "IN2R");
 327         snd_soc_dapm_nc_pin(dapm, "IN3L");
 328         snd_soc_dapm_nc_pin(dapm, "IN3R");
 329
 330         if (machine_is_aebl()) {
 331                 snd_soc_dapm_nc_pin(dapm, "LON");
 332                 snd_soc_dapm_nc_pin(dapm, "RON");
 333                 snd_soc_dapm_nc_pin(dapm, "ROP");
 334                 snd_soc_dapm_nc_pin(dapm, "LOP");
 335         } else {
 336                 snd_soc_dapm_nc_pin(dapm, "LINEOUTR");
 337                 snd_soc_dapm_nc_pin(dapm, "LINEOUTL");
 338         }
 339
 340         snd_soc_dapm_sync(dapm);
 341
 342         return 0;
 343 }
 344
 345 static struct snd_soc_dai_link tegra_wm8903_dai = {
 346         .name = "WM8903",
 347         .stream_name = "WM8903 PCM",
 348         .codec_name = "wm8903.0-001a",
 349         .platform_name = "tegra-pcm-audio",
 350         .cpu_dai_name = "tegra-i2s.0",
 351         .codec_dai_name = "wm8903-hifi",
 352         .init = tegra_wm8903_init,
 353         .ops = &tegra_wm8903_ops,
 354 };
 355
 356 static struct snd_soc_card snd_soc_tegra_wm8903 = {
 357         .name = "tegra-wm8903",
 358         .dai_link = &tegra_wm8903_dai,
 359         .num_links = 1,
 360
 361         .controls = tegra_wm8903_controls,
 362         .num_controls = ARRAY_SIZE(tegra_wm8903_controls),
 363         .dapm_widgets = tegra_wm8903_dapm_widgets,
 364         .num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets),
 365 };
 366
 367 static __devinit int tegra_wm8903_driver_probe(struct platform_device *pdev)
 368 {
 369         struct snd_soc_card *card = &snd_soc_tegra_wm8903;
 370         struct tegra_wm8903 *machine;
 371         struct tegra_wm8903_platform_data *pdata;
 372         int ret;
 373
 374         pdata = pdev->dev.platform_data;
 375         if (!pdata) {
 376                 dev_err(&pdev->dev, "No platform data supplied\n");
 377                 return -EINVAL;
 378         }
 379
 380         machine = kzalloc(sizeof(struct tegra_wm8903), GFP_KERNEL);
 381         if (!machine) {
 382                 dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n");
 383                 return -ENOMEM;
 384         }
 385
 386         machine->pdata = pdata;
 387
 388         ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
 389         if (ret)
 390                 goto err_free_machine;
 391
 392         card->dev = &pdev->dev;
 393         platform_set_drvdata(pdev, card);
 394         snd_soc_card_set_drvdata(card, machine);
 395
 396         if (machine_is_harmony() || machine_is_ventana()) {
 397                 card->dapm_routes = harmony_audio_map;
 398                 card->num_dapm_routes = ARRAY_SIZE(harmony_audio_map);
 399         } else if (machine_is_seaboard()) {
 400                 card->dapm_routes = seaboard_audio_map;
 401                 card->num_dapm_routes = ARRAY_SIZE(seaboard_audio_map);
 402         } else if (machine_is_kaen()) {
 403                 card->dapm_routes = kaen_audio_map;
 404                 card->num_dapm_routes = ARRAY_SIZE(kaen_audio_map);
 405         } else {
 406                 card->dapm_routes = aebl_audio_map;
 407                 card->num_dapm_routes = ARRAY_SIZE(aebl_audio_map);
 408         }
 409
 410         ret = snd_soc_register_card(card);
 411         if (ret) {
 412                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
 413                         ret);
 414                 goto err_fini_utils;
 415         }
 416
 417         return 0;
 418
 419 err_fini_utils:
 420         tegra_asoc_utils_fini(&machine->util_data);
 421 err_free_machine:
 422         kfree(machine);
 423         return ret;
 424 }
 425
 426 static int __devexit tegra_wm8903_driver_remove(struct platform_device *pdev)
 427 {
 428         struct snd_soc_card *card = platform_get_drvdata(pdev);
 429         struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
 430         struct tegra_wm8903_platform_data *pdata = machine->pdata;
 431
 432         snd_soc_unregister_card(card);
 433
 434         tegra_asoc_utils_fini(&machine->util_data);
 435
 436         if (machine->gpio_requested & GPIO_EXT_MIC_EN)
 437                 gpio_free(pdata->gpio_ext_mic_en);
 438         if (machine->gpio_requested & GPIO_INT_MIC_EN)
 439                 gpio_free(pdata->gpio_int_mic_en);
 440         if (machine->gpio_requested & GPIO_HP_MUTE)
 441                 gpio_free(pdata->gpio_hp_mute);
 442         if (machine->gpio_requested & GPIO_SPKR_EN)
 443                 gpio_free(pdata->gpio_spkr_en);
 444
 445         kfree(machine);
 446
 447         return 0;
 448 }
 449
 450 static struct platform_driver tegra_wm8903_driver = {
 451         .driver = {
 452                 .name = DRV_NAME,
 453                 .owner = THIS_MODULE,
 454                 .pm = &snd_soc_pm_ops,
 455         },
 456         .probe = tegra_wm8903_driver_probe,
 457         .remove = __devexit_p(tegra_wm8903_driver_remove),
 458 };
 459
 460 static int __init tegra_wm8903_modinit(void)
 461 {
 462         return platform_driver_register(&tegra_wm8903_driver);
 463 }
 464 module_init(tegra_wm8903_modinit);
 465
 466 static void __exit tegra_wm8903_modexit(void)
 467 {
 468         platform_driver_unregister(&tegra_wm8903_driver);
 469 }
 470 module_exit(tegra_wm8903_modexit);
 471
 472 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
 473 MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
 474 MODULE_LICENSE("GPL");
 475 MODULE_ALIAS("platform:" DRV_NAME);