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_single(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2);
 111         rx51_ext_control(&card->dapm);
 112
 113         return 0;
 114 }
 115
 116 static int rx51_hw_params(struct snd_pcm_substream *substream,
 117         struct snd_pcm_hw_params *params)
 118 {
 119         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 120         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 121
 122         /* Set the codec system clock for DAC and ADC */
 123         return snd_soc_dai_set_sysclk(codec_dai, 0, 19200000,
 124                                       SND_SOC_CLOCK_IN);
 125 }
 126
 127 static struct snd_soc_ops rx51_ops = {
 128         .startup = rx51_startup,
 129         .hw_params = rx51_hw_params,
 130 };
 131
 132 static int rx51_get_spk(struct snd_kcontrol *kcontrol,
 133                         struct snd_ctl_elem_value *ucontrol)
 134 {
 135         ucontrol->value.integer.value[0] = rx51_spk_func;
 136
 137         return 0;
 138 }
 139
 140 static int rx51_set_spk(struct snd_kcontrol *kcontrol,
 141                         struct snd_ctl_elem_value *ucontrol)
 142 {
 143         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 144
 145         if (rx51_spk_func == ucontrol->value.integer.value[0])
 146                 return 0;
 147
 148         rx51_spk_func = ucontrol->value.integer.value[0];
 149         rx51_ext_control(&card->dapm);
 150
 151         return 1;
 152 }
 153
 154 static int rx51_spk_event(struct snd_soc_dapm_widget *w,
 155                           struct snd_kcontrol *k, int event)
 156 {
 157         struct snd_soc_dapm_context *dapm = w->dapm;
 158         struct snd_soc_card *card = dapm->card;
 159         struct rx51_audio_pdata *pdata = snd_soc_card_get_drvdata(card);
 160
 161         gpiod_set_raw_value_cansleep(pdata->speaker_amp_gpio,
 162                                      !!SND_SOC_DAPM_EVENT_ON(event));
 163
 164         return 0;
 165 }
 166
 167 static int rx51_hp_event(struct snd_soc_dapm_widget *w,
 168                          struct snd_kcontrol *k, int event)
 169 {
 170         struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 171
 172         if (SND_SOC_DAPM_EVENT_ON(event))
 173                 tpa6130a2_stereo_enable(codec, 1);
 174         else
 175                 tpa6130a2_stereo_enable(codec, 0);
 176
 177         return 0;
 178 }
 179
 180 static int rx51_get_input(struct snd_kcontrol *kcontrol,
 181                           struct snd_ctl_elem_value *ucontrol)
 182 {
 183         ucontrol->value.integer.value[0] = rx51_dmic_func;
 184
 185         return 0;
 186 }
 187
 188 static int rx51_set_input(struct snd_kcontrol *kcontrol,
 189                           struct snd_ctl_elem_value *ucontrol)
 190 {
 191         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 192
 193         if (rx51_dmic_func == ucontrol->value.integer.value[0])
 194                 return 0;
 195
 196         rx51_dmic_func = ucontrol->value.integer.value[0];
 197         rx51_ext_control(&card->dapm);
 198
 199         return 1;
 200 }
 201
 202 static int rx51_get_jack(struct snd_kcontrol *kcontrol,
 203                          struct snd_ctl_elem_value *ucontrol)
 204 {
 205         ucontrol->value.integer.value[0] = rx51_jack_func;
 206
 207         return 0;
 208 }
 209
 210 static int rx51_set_jack(struct snd_kcontrol *kcontrol,
 211                          struct snd_ctl_elem_value *ucontrol)
 212 {
 213         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 214
 215         if (rx51_jack_func == ucontrol->value.integer.value[0])
 216                 return 0;
 217
 218         rx51_jack_func = ucontrol->value.integer.value[0];
 219         rx51_ext_control(&card->dapm);
 220
 221         return 1;
 222 }
 223
 224 static struct snd_soc_jack rx51_av_jack;
 225
 226 static struct snd_soc_jack_gpio rx51_av_jack_gpios[] = {
 227         {
 228                 .name = "avdet-gpio",
 229                 .report = SND_JACK_HEADSET,
 230                 .invert = 1,
 231                 .debounce_time = 200,
 232         },
 233 };
 234
 235 static const struct snd_soc_dapm_widget aic34_dapm_widgets[] = {
 236         SND_SOC_DAPM_SPK("Ext Spk", rx51_spk_event),
 237         SND_SOC_DAPM_MIC("DMic", NULL),
 238         SND_SOC_DAPM_HP("Headphone Jack", rx51_hp_event),
 239         SND_SOC_DAPM_MIC("HS Mic", NULL),
 240         SND_SOC_DAPM_LINE("FM Transmitter", NULL),
 241         SND_SOC_DAPM_SPK("Earphone", NULL),
 242 };
 243
 244 static const struct snd_soc_dapm_route audio_map[] = {
 245         {"Ext Spk", NULL, "HPLOUT"},
 246         {"Ext Spk", NULL, "HPROUT"},
 247         {"Ext Spk", NULL, "HPLCOM"},
 248         {"Ext Spk", NULL, "HPRCOM"},
 249         {"Headphone Jack", NULL, "LLOUT"},
 250         {"Headphone Jack", NULL, "RLOUT"},
 251         {"FM Transmitter", NULL, "LLOUT"},
 252         {"FM Transmitter", NULL, "RLOUT"},
 253
 254         {"DMic Rate 64", NULL, "DMic"},
 255         {"DMic", NULL, "Mic Bias"},
 256
 257         {"b LINE2R", NULL, "MONO_LOUT"},
 258         {"Earphone", NULL, "b HPLOUT"},
 259
 260         {"LINE1L", NULL, "HS Mic"},
 261         {"HS Mic", NULL, "b Mic Bias"},
 262 };
 263
 264 static const char * const spk_function[] = {"Off", "On"};
 265 static const char * const input_function[] = {"ADC", "Digital Mic"};
 266 static const char * const jack_function[] = {
 267         "Off", "TV-OUT", "Headphone", "Headset"
 268 };
 269
 270 static const struct soc_enum rx51_enum[] = {
 271         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
 272         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
 273         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
 274 };
 275
 276 static const struct snd_kcontrol_new aic34_rx51_controls[] = {
 277         SOC_ENUM_EXT("Speaker Function", rx51_enum[0],
 278                      rx51_get_spk, rx51_set_spk),
 279         SOC_ENUM_EXT("Input Select",  rx51_enum[1],
 280                      rx51_get_input, rx51_set_input),
 281         SOC_ENUM_EXT("Jack Function", rx51_enum[2],
 282                      rx51_get_jack, rx51_set_jack),
 283         SOC_DAPM_PIN_SWITCH("FM Transmitter"),
 284         SOC_DAPM_PIN_SWITCH("Earphone"),
 285 };
 286
 287 static int rx51_aic34_init(struct snd_soc_pcm_runtime *rtd)
 288 {
 289         struct snd_soc_codec *codec = rtd->codec;
 290         struct snd_soc_card *card = rtd->card;
 291         struct rx51_audio_pdata *pdata = snd_soc_card_get_drvdata(card);
 292         int err;
 293
 294         err = tpa6130a2_add_controls(codec);
 295         if (err < 0) {
 296                 dev_err(card->dev, "Failed to add TPA6130A2 controls\n");
 297                 return err;
 298         }
 299         snd_soc_limit_volume(card, "TPA6130A2 Headphone Playback Volume", 42);
 300
 301         err = omap_mcbsp_st_add_controls(rtd, 2);
 302         if (err < 0) {
 303                 dev_err(card->dev, "Failed to add MCBSP controls\n");
 304                 return err;
 305         }
 306
 307         /* AV jack detection */
 308         err = snd_soc_card_jack_new(rtd->card, "AV Jack",
 309                                     SND_JACK_HEADSET | SND_JACK_VIDEOOUT,
 310                                     &rx51_av_jack, NULL, 0);
 311         if (err) {
 312                 dev_err(card->dev, "Failed to add AV Jack\n");
 313                 return err;
 314         }
 315
 316         /* prepare gpio for snd_soc_jack_add_gpios */
 317         rx51_av_jack_gpios[0].gpio = desc_to_gpio(pdata->jack_detection_gpio);
 318         devm_gpiod_put(card->dev, pdata->jack_detection_gpio);
 319
 320         err = snd_soc_jack_add_gpios(&rx51_av_jack,
 321                                      ARRAY_SIZE(rx51_av_jack_gpios),
 322                                      rx51_av_jack_gpios);
 323         if (err) {
 324                 dev_err(card->dev, "Failed to add GPIOs\n");
 325                 return err;
 326         }
 327
 328         return err;
 329 }
 330
 331 static int rx51_card_remove(struct snd_soc_card *card)
 332 {
 333         snd_soc_jack_free_gpios(&rx51_av_jack, ARRAY_SIZE(rx51_av_jack_gpios),
 334                                 rx51_av_jack_gpios);
 335
 336         return 0;
 337 }
 338
 339 /* Digital audio interface glue - connects codec <--> CPU */
 340 static struct snd_soc_dai_link rx51_dai[] = {
 341         {
 342                 .name = "TLV320AIC34",
 343                 .stream_name = "AIC34",
 344                 .cpu_dai_name = "omap-mcbsp.2",
 345                 .codec_dai_name = "tlv320aic3x-hifi",
 346                 .platform_name = "omap-mcbsp.2",
 347                 .codec_name = "tlv320aic3x-codec.2-0018",
 348                 .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
 349                            SND_SOC_DAIFMT_CBM_CFM,
 350                 .init = rx51_aic34_init,
 351                 .ops = &rx51_ops,
 352         },
 353 };
 354
 355 static struct snd_soc_aux_dev rx51_aux_dev[] = {
 356         {
 357                 .name = "TLV320AIC34b",
 358                 .codec_name = "tlv320aic3x-codec.2-0019",
 359         },
 360 };
 361
 362 static struct snd_soc_codec_conf rx51_codec_conf[] = {
 363         {
 364                 .dev_name = "tlv320aic3x-codec.2-0019",
 365                 .name_prefix = "b",
 366         },
 367 };
 368
 369 /* Audio card */
 370 static struct snd_soc_card rx51_sound_card = {
 371         .name = "RX-51",
 372         .owner = THIS_MODULE,
 373         .remove = rx51_card_remove,
 374         .dai_link = rx51_dai,
 375         .num_links = ARRAY_SIZE(rx51_dai),
 376         .aux_dev = rx51_aux_dev,
 377         .num_aux_devs = ARRAY_SIZE(rx51_aux_dev),
 378         .codec_conf = rx51_codec_conf,
 379         .num_configs = ARRAY_SIZE(rx51_codec_conf),
 380         .fully_routed = true,
 381
 382         .controls = aic34_rx51_controls,
 383         .num_controls = ARRAY_SIZE(aic34_rx51_controls),
 384         .dapm_widgets = aic34_dapm_widgets,
 385         .num_dapm_widgets = ARRAY_SIZE(aic34_dapm_widgets),
 386         .dapm_routes = audio_map,
 387         .num_dapm_routes = ARRAY_SIZE(audio_map),
 388 };
 389
 390 static int rx51_soc_probe(struct platform_device *pdev)
 391 {
 392         struct rx51_audio_pdata *pdata;
 393         struct device_node *np = pdev->dev.of_node;
 394         struct snd_soc_card *card = &rx51_sound_card;
 395         int err;
 396
 397         if (!machine_is_nokia_rx51() && !of_machine_is_compatible("nokia,omap3-n900"))
 398                 return -ENODEV;
 399
 400         card->dev = &pdev->dev;
 401
 402         if (np) {
 403                 struct device_node *dai_node;
 404
 405                 dai_node = of_parse_phandle(np, "nokia,cpu-dai", 0);
 406                 if (!dai_node) {
 407                         dev_err(&pdev->dev, "McBSP node is not provided\n");
 408                         return -EINVAL;
 409                 }
 410                 rx51_dai[0].cpu_dai_name = NULL;
 411                 rx51_dai[0].platform_name = NULL;
 412                 rx51_dai[0].cpu_of_node = dai_node;
 413                 rx51_dai[0].platform_of_node = dai_node;
 414
 415                 dai_node = of_parse_phandle(np, "nokia,audio-codec", 0);
 416                 if (!dai_node) {
 417                         dev_err(&pdev->dev, "Codec node is not provided\n");
 418                         return -EINVAL;
 419                 }
 420                 rx51_dai[0].codec_name = NULL;
 421                 rx51_dai[0].codec_of_node = dai_node;
 422
 423                 dai_node = of_parse_phandle(np, "nokia,audio-codec", 1);
 424                 if (!dai_node) {
 425                         dev_err(&pdev->dev, "Auxiliary Codec node is not provided\n");
 426                         return -EINVAL;
 427                 }
 428                 rx51_aux_dev[0].codec_name = NULL;
 429                 rx51_aux_dev[0].codec_of_node = dai_node;
 430                 rx51_codec_conf[0].dev_name = NULL;
 431                 rx51_codec_conf[0].of_node = dai_node;
 432
 433                 dai_node = of_parse_phandle(np, "nokia,headphone-amplifier", 0);
 434                 if (!dai_node) {
 435                         dev_err(&pdev->dev, "Headphone amplifier node is not provided\n");
 436                         return -EINVAL;
 437                 }
 438
 439                 /* TODO: tpa6130a2a driver supports only a single instance, so
 440                  * this driver ignores the headphone-amplifier node for now.
 441                  * It's already mandatory in the DT binding to be future proof.
 442                  */
 443         }
 444
 445         pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
 446         if (pdata == NULL) {
 447                 dev_err(card->dev, "failed to create private data\n");
 448                 return -ENOMEM;
 449         }
 450         snd_soc_card_set_drvdata(card, pdata);
 451
 452         pdata->tvout_selection_gpio = devm_gpiod_get(card->dev,
 453                                                      "tvout-selection",
 454                                                      GPIOD_OUT_LOW);
 455         if (IS_ERR(pdata->tvout_selection_gpio)) {
 456                 dev_err(card->dev, "could not get tvout selection gpio\n");
 457                 return PTR_ERR(pdata->tvout_selection_gpio);
 458         }
 459
 460         pdata->jack_detection_gpio = devm_gpiod_get(card->dev,
 461                                                     "jack-detection",
 462                                                     GPIOD_ASIS);
 463         if (IS_ERR(pdata->jack_detection_gpio)) {
 464                 dev_err(card->dev, "could not get jack detection gpio\n");
 465                 return PTR_ERR(pdata->jack_detection_gpio);
 466         }
 467
 468         pdata->eci_sw_gpio = devm_gpiod_get(card->dev, "eci-switch",
 469                                             GPIOD_OUT_HIGH);
 470         if (IS_ERR(pdata->eci_sw_gpio)) {
 471                 dev_err(card->dev, "could not get eci switch gpio\n");
 472                 return PTR_ERR(pdata->eci_sw_gpio);
 473         }
 474
 475         pdata->speaker_amp_gpio = devm_gpiod_get(card->dev,
 476                                                  "speaker-amplifier",
 477                                                  GPIOD_OUT_LOW);
 478         if (IS_ERR(pdata->speaker_amp_gpio)) {
 479                 dev_err(card->dev, "could not get speaker enable gpio\n");
 480                 return PTR_ERR(pdata->speaker_amp_gpio);
 481         }
 482
 483         err = devm_snd_soc_register_card(card->dev, card);
 484         if (err) {
 485                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", err);
 486                 return err;
 487         }
 488
 489         return 0;
 490 }
 491
 492 #if defined(CONFIG_OF)
 493 static const struct of_device_id rx51_audio_of_match[] = {
 494         { .compatible = "nokia,n900-audio", },
 495         {},
 496 };
 497 MODULE_DEVICE_TABLE(of, rx51_audio_of_match);
 498 #endif
 499
 500 static struct platform_driver rx51_soc_driver = {
 501         .driver = {
 502                 .name = "rx51-audio",
 503                 .of_match_table = of_match_ptr(rx51_audio_of_match),
 504         },
 505         .probe = rx51_soc_probe,
 506 };
 507
 508 module_platform_driver(rx51_soc_driver);
 509
 510 MODULE_AUTHOR("Nokia Corporation");
 511 MODULE_DESCRIPTION("ALSA SoC Nokia RX-51");
 512 MODULE_LICENSE("GPL");
 513 MODULE_ALIAS("platform:rx51-audio");