kernel/sound/soc/omap/rx51.c

   1 /*
   2  * rx51.c  --  SoC audio for Nokia RX-51
   3  *
   4  * Copyright (C) 2008 - 2009 Nokia Corporation
   5  *
   6  * Contact: Peter Ujfalusi <peter.ujfalusi@ti.com>
   7  *          Eduardo Valentin <eduardo.valentin@nokia.com>
   8  *          Jarkko Nikula <jarkko.nikula@bitmer.com>
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License
  12  * version 2 as published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  22  * 02110-1301 USA
  23  *
  24  */
  25
  26 #include <linux/delay.h>
  27 #include <linux/gpio.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/gpio/consumer.h>
  30 #include <linux/module.h>
  31 #include <sound/core.h>
  32 #include <sound/jack.h>
  33 #include <sound/pcm.h>
  34 #include <sound/soc.h>
  35 #include <linux/platform_data/asoc-ti-mcbsp.h>
  36 #include "../codecs/tpa6130a2.h"
  37
  38 #include <asm/mach-types.h>
  39
  40 #include "omap-mcbsp.h"
  41
  42 enum {
  43         RX51_JACK_DISABLED,
  44         RX51_JACK_TVOUT,                /* tv-out with stereo output */
  45         RX51_JACK_HP,                   /* headphone: stereo output, no mic */
  46         RX51_JACK_HS,                   /* headset: stereo output with mic */
  47 };
  48
  49 struct rx51_audio_pdata {
  50         struct gpio_desc *tvout_selection_gpio;
  51         struct gpio_desc *jack_detection_gpio;
  52         struct gpio_desc *eci_sw_gpio;
  53         struct gpio_desc *speaker_amp_gpio;
  54 };
  55
  56 static int rx51_spk_func;
  57 static int rx51_dmic_func;
  58 static int rx51_jack_func;
  59
  60 static void rx51_ext_control(struct snd_soc_dapm_context *dapm)
  61 {
  62         struct snd_soc_card *card = dapm->card;
  63         struct rx51_audio_pdata *pdata = snd_soc_card_get_drvdata(card);
  64         int hp = 0, hs = 0, tvout = 0;
  65
  66         switch (rx51_jack_func) {
  67         case RX51_JACK_TVOUT:
  68                 tvout = 1;
  69                 hp = 1;
  70                 break;
  71         case RX51_JACK_HS:
  72                 hs = 1;
  73         case RX51_JACK_HP:
  74                 hp = 1;
  75                 break;
  76         }
  77
  78         snd_soc_dapm_mutex_lock(dapm);
  79
  80         if (rx51_spk_func)
  81                 snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
  82         else
  83                 snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
  84         if (rx51_dmic_func)
  85                 snd_soc_dapm_enable_pin_unlocked(dapm, "DMic");
  86         else
  87                 snd_soc_dapm_disable_pin_unlocked(dapm, "DMic");
  88         if (hp)
  89                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
  90         else
  91                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  92         if (hs)
  93                 snd_soc_dapm_enable_pin_unlocked(dapm, "HS Mic");
  94         else
  95                 snd_soc_dapm_disable_pin_unlocked(dapm, "HS Mic");
  96
  97         gpiod_set_value(pdata->tvout_selection_gpio, tvout);
  98
  99         snd_soc_dapm_sync_unlocked(dapm);
 100
 101         snd_soc_dapm_mutex_unlock(dapm);
 102 }
 103
 104 static int rx51_startup(struct snd_pcm_substream *substream)
 105 {
 106         struct snd_pcm_runtime *runtime = substream->runtime;
 107         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 108         struct snd_soc_card *card = rtd->card;
 109
 110         snd_pcm_hw_constraint_minmax(runtime,
 111                                      SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
 112         rx51_ext_control(&card->dapm);
 113
 114         return 0;
 115 }
 116
 117 static int rx51_hw_params(struct snd_pcm_substream *substream,
 118         struct snd_pcm_hw_params *params)
 119 {
 120         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 121         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 122
 123         /* Set the codec system clock for DAC and ADC */
 124         return snd_soc_dai_set_sysclk(codec_dai, 0, 19200000,
 125                                       SND_SOC_CLOCK_IN);
 126 }
 127
 128 static struct snd_soc_ops rx51_ops = {
 129         .startup = rx51_startup,
 130         .hw_params = rx51_hw_params,
 131 };
 132
 133 static int rx51_get_spk(struct snd_kcontrol *kcontrol,
 134                         struct snd_ctl_elem_value *ucontrol)
 135 {
 136         ucontrol->value.integer.value[0] = rx51_spk_func;
 137
 138         return 0;
 139 }
 140
 141 static int rx51_set_spk(struct snd_kcontrol *kcontrol,
 142                         struct snd_ctl_elem_value *ucontrol)
 143 {
 144         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 145
 146         if (rx51_spk_func == ucontrol->value.integer.value[0])
 147                 return 0;
 148
 149         rx51_spk_func = ucontrol->value.integer.value[0];
 150         rx51_ext_control(&card->dapm);
 151
 152         return 1;
 153 }
 154
 155 static int rx51_spk_event(struct snd_soc_dapm_widget *w,
 156                           struct snd_kcontrol *k, int event)
 157 {
 158         struct snd_soc_dapm_context *dapm = w->dapm;
 159         struct snd_soc_card *card = dapm->card;
 160         struct rx51_audio_pdata *pdata = snd_soc_card_get_drvdata(card);
 161
 162         gpiod_set_raw_value_cansleep(pdata->speaker_amp_gpio,
 163                                      !!SND_SOC_DAPM_EVENT_ON(event));
 164
 165         return 0;
 166 }
 167
 168 static int rx51_hp_event(struct snd_soc_dapm_widget *w,
 169                          struct snd_kcontrol *k, int event)
 170 {
 171         struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 172
 173         if (SND_SOC_DAPM_EVENT_ON(event))
 174                 tpa6130a2_stereo_enable(codec, 1);
 175         else
 176                 tpa6130a2_stereo_enable(codec, 0);
 177
 178         return 0;
 179 }
 180
 181 static int rx51_get_input(struct snd_kcontrol *kcontrol,
 182                           struct snd_ctl_elem_value *ucontrol)
 183 {
 184         ucontrol->value.integer.value[0] = rx51_dmic_func;
 185
 186         return 0;
 187 }
 188
 189 static int rx51_set_input(struct snd_kcontrol *kcontrol,
 190                           struct snd_ctl_elem_value *ucontrol)
 191 {
 192         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 193
 194         if (rx51_dmic_func == ucontrol->value.integer.value[0])
 195                 return 0;
 196
 197         rx51_dmic_func = ucontrol->value.integer.value[0];
 198         rx51_ext_control(&card->dapm);
 199
 200         return 1;
 201 }
 202
 203 static int rx51_get_jack(struct snd_kcontrol *kcontrol,
 204                          struct snd_ctl_elem_value *ucontrol)
 205 {
 206         ucontrol->value.integer.value[0] = rx51_jack_func;
 207
 208         return 0;
 209 }
 210
 211 static int rx51_set_jack(struct snd_kcontrol *kcontrol,
 212                          struct snd_ctl_elem_value *ucontrol)
 213 {
 214         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 215
 216         if (rx51_jack_func == ucontrol->value.integer.value[0])
 217                 return 0;
 218
 219         rx51_jack_func = ucontrol->value.integer.value[0];
 220         rx51_ext_control(&card->dapm);
 221
 222         return 1;
 223 }
 224
 225 static struct snd_soc_jack rx51_av_jack;
 226
 227 static struct snd_soc_jack_gpio rx51_av_jack_gpios[] = {
 228         {
 229                 .name = "avdet-gpio",
 230                 .report = SND_JACK_HEADSET,
 231                 .invert = 1,
 232                 .debounce_time = 200,
 233         },
 234 };
 235
 236 static const struct snd_soc_dapm_widget aic34_dapm_widgets[] = {
 237         SND_SOC_DAPM_SPK("Ext Spk", rx51_spk_event),
 238         SND_SOC_DAPM_MIC("DMic", NULL),
 239         SND_SOC_DAPM_HP("Headphone Jack", rx51_hp_event),
 240         SND_SOC_DAPM_MIC("HS Mic", NULL),
 241         SND_SOC_DAPM_LINE("FM Transmitter", NULL),
 242         SND_SOC_DAPM_SPK("Earphone", NULL),
 243 };
 244
 245 static const struct snd_soc_dapm_route audio_map[] = {
 246         {"Ext Spk", NULL, "HPLOUT"},
 247         {"Ext Spk", NULL, "HPROUT"},
 248         {"Headphone Jack", NULL, "LLOUT"},
 249         {"Headphone Jack", NULL, "RLOUT"},
 250         {"FM Transmitter", NULL, "LLOUT"},
 251         {"FM Transmitter", NULL, "RLOUT"},
 252
 253         {"DMic Rate 64", NULL, "DMic"},
 254         {"DMic", NULL, "Mic Bias"},
 255
 256         {"b LINE2R", NULL, "MONO_LOUT"},
 257         {"Earphone", NULL, "b HPLOUT"},
 258
 259         {"LINE1L", NULL, "HS Mic"},
 260         {"HS Mic", NULL, "b Mic Bias"},
 261 };
 262
 263 static const char * const spk_function[] = {"Off", "On"};
 264 static const char * const input_function[] = {"ADC", "Digital Mic"};
 265 static const char * const jack_function[] = {
 266         "Off", "TV-OUT", "Headphone", "Headset"
 267 };
 268
 269 static const struct soc_enum rx51_enum[] = {
 270         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
 271         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
 272         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
 273 };
 274
 275 static const struct snd_kcontrol_new aic34_rx51_controls[] = {
 276         SOC_ENUM_EXT("Speaker Function", rx51_enum[0],
 277                      rx51_get_spk, rx51_set_spk),
 278         SOC_ENUM_EXT("Input Select",  rx51_enum[1],
 279                      rx51_get_input, rx51_set_input),
 280         SOC_ENUM_EXT("Jack Function", rx51_enum[2],
 281                      rx51_get_jack, rx51_set_jack),
 282         SOC_DAPM_PIN_SWITCH("FM Transmitter"),
 283         SOC_DAPM_PIN_SWITCH("Earphone"),
 284 };
 285
 286 static int rx51_aic34_init(struct snd_soc_pcm_runtime *rtd)
 287 {
 288         struct snd_soc_codec *codec = rtd->codec;
 289         struct snd_soc_card *card = rtd->card;
 290         struct rx51_audio_pdata *pdata = snd_soc_card_get_drvdata(card);
 291
 292         struct snd_soc_dapm_context *dapm = &codec->dapm;
 293         int err;
 294
 295         /* Set up NC codec pins */
 296         snd_soc_dapm_nc_pin(dapm, "MIC3L");
 297         snd_soc_dapm_nc_pin(dapm, "MIC3R");
 298         snd_soc_dapm_nc_pin(dapm, "LINE1R");
 299
 300         err = tpa6130a2_add_controls(codec);
 301         if (err < 0) {
 302                 dev_err(card->dev, "Failed to add TPA6130A2 controls\n");
 303                 return err;
 304         }
 305         snd_soc_limit_volume(codec, "TPA6130A2 Headphone Playback Volume", 42);
 306
 307         err = omap_mcbsp_st_add_controls(rtd, 2);
 308         if (err < 0) {
 309                 dev_err(card->dev, "Failed to add MCBSP controls\n");
 310                 return err;
 311         }
 312
 313         /* AV jack detection */
 314         err = snd_soc_card_jack_new(rtd->card, "AV Jack",
 315                                     SND_JACK_HEADSET | SND_JACK_VIDEOOUT,
 316                                     &rx51_av_jack, NULL, 0);
 317         if (err) {
 318                 dev_err(card->dev, "Failed to add AV Jack\n");
 319                 return err;
 320         }
 321
 322         /* prepare gpio for snd_soc_jack_add_gpios */
 323         rx51_av_jack_gpios[0].gpio = desc_to_gpio(pdata->jack_detection_gpio);
 324         devm_gpiod_put(card->dev, pdata->jack_detection_gpio);
 325
 326         err = snd_soc_jack_add_gpios(&rx51_av_jack,
 327                                      ARRAY_SIZE(rx51_av_jack_gpios),
 328                                      rx51_av_jack_gpios);
 329         if (err) {
 330                 dev_err(card->dev, "Failed to add GPIOs\n");
 331                 return err;
 332         }
 333
 334         return err;
 335 }
 336
 337 static int rx51_card_remove(struct snd_soc_card *card)
 338 {
 339         snd_soc_jack_free_gpios(&rx51_av_jack, ARRAY_SIZE(rx51_av_jack_gpios),
 340                                 rx51_av_jack_gpios);
 341
 342         return 0;
 343 }
 344
 345 /* Digital audio interface glue - connects codec <--> CPU */
 346 static struct snd_soc_dai_link rx51_dai[] = {
 347         {
 348                 .name = "TLV320AIC34",
 349                 .stream_name = "AIC34",
 350                 .cpu_dai_name = "omap-mcbsp.2",
 351                 .codec_dai_name = "tlv320aic3x-hifi",
 352                 .platform_name = "omap-mcbsp.2",
 353                 .codec_name = "tlv320aic3x-codec.2-0018",
 354                 .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
 355                            SND_SOC_DAIFMT_CBM_CFM,
 356                 .init = rx51_aic34_init,
 357                 .ops = &rx51_ops,
 358         },
 359 };
 360
 361 static struct snd_soc_aux_dev rx51_aux_dev[] = {
 362         {
 363                 .name = "TLV320AIC34b",
 364                 .codec_name = "tlv320aic3x-codec.2-0019",
 365         },
 366 };
 367
 368 static struct snd_soc_codec_conf rx51_codec_conf[] = {
 369         {
 370                 .dev_name = "tlv320aic3x-codec.2-0019",
 371                 .name_prefix = "b",
 372         },
 373 };
 374
 375 /* Audio card */
 376 static struct snd_soc_card rx51_sound_card = {
 377         .name = "RX-51",
 378         .owner = THIS_MODULE,
 379         .remove = rx51_card_remove,
 380         .dai_link = rx51_dai,
 381         .num_links = ARRAY_SIZE(rx51_dai),
 382         .aux_dev = rx51_aux_dev,
 383         .num_aux_devs = ARRAY_SIZE(rx51_aux_dev),
 384         .codec_conf = rx51_codec_conf,
 385         .num_configs = ARRAY_SIZE(rx51_codec_conf),
 386
 387         .controls = aic34_rx51_controls,
 388         .num_controls = ARRAY_SIZE(aic34_rx51_controls),
 389         .dapm_widgets = aic34_dapm_widgets,
 390         .num_dapm_widgets = ARRAY_SIZE(aic34_dapm_widgets),
 391         .dapm_routes = audio_map,
 392         .num_dapm_routes = ARRAY_SIZE(audio_map),
 393 };
 394
 395 static int rx51_soc_probe(struct platform_device *pdev)
 396 {
 397         struct rx51_audio_pdata *pdata;
 398         struct device_node *np = pdev->dev.of_node;
 399         struct snd_soc_card *card = &rx51_sound_card;
 400         int err;
 401
 402         if (!machine_is_nokia_rx51() && !of_machine_is_compatible("nokia,omap3-n900"))
 403                 return -ENODEV;
 404
 405         card->dev = &pdev->dev;
 406
 407         if (np) {
 408                 struct device_node *dai_node;
 409
 410                 dai_node = of_parse_phandle(np, "nokia,cpu-dai", 0);
 411                 if (!dai_node) {
 412                         dev_err(&pdev->dev, "McBSP node is not provided\n");
 413                         return -EINVAL;
 414                 }
 415                 rx51_dai[0].cpu_dai_name = NULL;
 416                 rx51_dai[0].platform_name = NULL;
 417                 rx51_dai[0].cpu_of_node = dai_node;
 418                 rx51_dai[0].platform_of_node = dai_node;
 419
 420                 dai_node = of_parse_phandle(np, "nokia,audio-codec", 0);
 421                 if (!dai_node) {
 422                         dev_err(&pdev->dev, "Codec node is not provided\n");
 423                         return -EINVAL;
 424                 }
 425                 rx51_dai[0].codec_name = NULL;
 426                 rx51_dai[0].codec_of_node = dai_node;
 427
 428                 dai_node = of_parse_phandle(np, "nokia,audio-codec", 1);
 429                 if (!dai_node) {
 430                         dev_err(&pdev->dev, "Auxiliary Codec node is not provided\n");
 431                         return -EINVAL;
 432                 }
 433                 rx51_aux_dev[0].codec_name = NULL;
 434                 rx51_aux_dev[0].codec_of_node = dai_node;
 435                 rx51_codec_conf[0].dev_name = NULL;
 436                 rx51_codec_conf[0].of_node = dai_node;
 437
 438                 dai_node = of_parse_phandle(np, "nokia,headphone-amplifier", 0);
 439                 if (!dai_node) {
 440                         dev_err(&pdev->dev, "Headphone amplifier node is not provided\n");
 441                         return -EINVAL;
 442                 }
 443
 444                 /* TODO: tpa6130a2a driver supports only a single instance, so
 445                  * this driver ignores the headphone-amplifier node for now.
 446                  * It's already mandatory in the DT binding to be future proof.
 447                  */
 448         }
 449
 450         pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
 451         if (pdata == NULL) {
 452                 dev_err(card->dev, "failed to create private data\n");
 453                 return -ENOMEM;
 454         }
 455         snd_soc_card_set_drvdata(card, pdata);
 456
 457         pdata->tvout_selection_gpio = devm_gpiod_get(card->dev,
 458                                                      "tvout-selection");
 459         if (IS_ERR(pdata->tvout_selection_gpio)) {
 460                 dev_err(card->dev, "could not get tvout selection gpio\n");
 461                 return PTR_ERR(pdata->tvout_selection_gpio);
 462         }
 463
 464         err = gpiod_direction_output(pdata->tvout_selection_gpio, 0);
 465         if (err) {
 466                 dev_err(card->dev, "could not setup tvout selection gpio\n");
 467                 return err;
 468         }
 469
 470         pdata->jack_detection_gpio = devm_gpiod_get(card->dev,
 471                                                     "jack-detection");
 472         if (IS_ERR(pdata->jack_detection_gpio)) {
 473                 dev_err(card->dev, "could not get jack detection gpio\n");
 474                 return PTR_ERR(pdata->jack_detection_gpio);
 475         }
 476
 477         pdata->eci_sw_gpio = devm_gpiod_get(card->dev, "eci-switch");
 478         if (IS_ERR(pdata->eci_sw_gpio)) {
 479                 dev_err(card->dev, "could not get eci switch gpio\n");
 480                 return PTR_ERR(pdata->eci_sw_gpio);
 481         }
 482
 483         err = gpiod_direction_output(pdata->eci_sw_gpio, 1);
 484         if (err) {
 485                 dev_err(card->dev, "could not setup eci switch gpio\n");
 486                 return err;
 487         }
 488
 489         pdata->speaker_amp_gpio = devm_gpiod_get(card->dev,
 490                                                  "speaker-amplifier");
 491         if (IS_ERR(pdata->speaker_amp_gpio)) {
 492                 dev_err(card->dev, "could not get speaker enable gpio\n");
 493                 return PTR_ERR(pdata->speaker_amp_gpio);
 494         }
 495
 496         err = gpiod_direction_output(pdata->speaker_amp_gpio, 0);
 497         if (err) {
 498                 dev_err(card->dev, "could not setup speaker enable gpio\n");
 499                 return err;
 500         }
 501
 502         err = devm_snd_soc_register_card(card->dev, card);
 503         if (err) {
 504                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", err);
 505                 return err;
 506         }
 507
 508         return 0;
 509 }
 510
 511 #if defined(CONFIG_OF)
 512 static const struct of_device_id rx51_audio_of_match[] = {
 513         { .compatible = "nokia,n900-audio", },
 514         {},
 515 };
 516 MODULE_DEVICE_TABLE(of, rx51_audio_of_match);
 517 #endif
 518
 519 static struct platform_driver rx51_soc_driver = {
 520         .driver = {
 521                 .name = "rx51-audio",
 522                 .of_match_table = of_match_ptr(rx51_audio_of_match),
 523         },
 524         .probe = rx51_soc_probe,
 525 };
 526
 527 module_platform_driver(rx51_soc_driver);
 528
 529 MODULE_AUTHOR("Nokia Corporation");
 530 MODULE_DESCRIPTION("ALSA SoC Nokia RX-51");
 531 MODULE_LICENSE("GPL");
 532 MODULE_ALIAS("platform:rx51-audio");