linux/sound/soc/omap/rx51.c
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   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
  37#include <asm/mach-types.h>
  38
  39#include "omap-mcbsp.h"
  40
  41enum {
  42        RX51_JACK_DISABLED,
  43        RX51_JACK_TVOUT,                /* tv-out with stereo output */
  44        RX51_JACK_HP,                   /* headphone: stereo output, no mic */
  45        RX51_JACK_HS,                   /* headset: stereo output with mic */
  46};
  47
  48struct rx51_audio_pdata {
  49        struct gpio_desc *tvout_selection_gpio;
  50        struct gpio_desc *jack_detection_gpio;
  51        struct gpio_desc *eci_sw_gpio;
  52        struct gpio_desc *speaker_amp_gpio;
  53};
  54
  55static int rx51_spk_func;
  56static int rx51_dmic_func;
  57static int rx51_jack_func;
  58
  59static void rx51_ext_control(struct snd_soc_dapm_context *dapm)
  60{
  61        struct snd_soc_card *card = dapm->card;
  62        struct rx51_audio_pdata *pdata = snd_soc_card_get_drvdata(card);
  63        int hp = 0, hs = 0, tvout = 0;
  64
  65        switch (rx51_jack_func) {
  66        case RX51_JACK_TVOUT:
  67                tvout = 1;
  68                hp = 1;
  69                break;
  70        case RX51_JACK_HS:
  71                hs = 1;
  72        case RX51_JACK_HP:
  73                hp = 1;
  74                break;
  75        }
  76
  77        snd_soc_dapm_mutex_lock(dapm);
  78
  79        if (rx51_spk_func)
  80                snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
  81        else
  82                snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
  83        if (rx51_dmic_func)
  84                snd_soc_dapm_enable_pin_unlocked(dapm, "DMic");
  85        else
  86                snd_soc_dapm_disable_pin_unlocked(dapm, "DMic");
  87        if (hp)
  88                snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
  89        else
  90                snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  91        if (hs)
  92                snd_soc_dapm_enable_pin_unlocked(dapm, "HS Mic");
  93        else
  94                snd_soc_dapm_disable_pin_unlocked(dapm, "HS Mic");
  95
  96        gpiod_set_value(pdata->tvout_selection_gpio, tvout);
  97
  98        snd_soc_dapm_sync_unlocked(dapm);
  99
 100        snd_soc_dapm_mutex_unlock(dapm);
 101}
 102
 103static int rx51_startup(struct snd_pcm_substream *substream)
 104{
 105        struct snd_pcm_runtime *runtime = substream->runtime;
 106        struct snd_soc_pcm_runtime *rtd = substream->private_data;
 107        struct snd_soc_card *card = rtd->card;
 108
 109        snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2);
 110        rx51_ext_control(&card->dapm);
 111
 112        return 0;
 113}
 114
 115static int rx51_hw_params(struct snd_pcm_substream *substream,
 116        struct snd_pcm_hw_params *params)
 117{
 118        struct snd_soc_pcm_runtime *rtd = substream->private_data;
 119        struct snd_soc_dai *codec_dai = rtd->codec_dai;
 120
 121        /* Set the codec system clock for DAC and ADC */
 122        return snd_soc_dai_set_sysclk(codec_dai, 0, 19200000,
 123                                      SND_SOC_CLOCK_IN);
 124}
 125
 126static struct snd_soc_ops rx51_ops = {
 127        .startup = rx51_startup,
 128        .hw_params = rx51_hw_params,
 129};
 130
 131static int rx51_get_spk(struct snd_kcontrol *kcontrol,
 132                        struct snd_ctl_elem_value *ucontrol)
 133{
 134        ucontrol->value.enumerated.item[0] = rx51_spk_func;
 135
 136        return 0;
 137}
 138
 139static int rx51_set_spk(struct snd_kcontrol *kcontrol,
 140                        struct snd_ctl_elem_value *ucontrol)
 141{
 142        struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 143
 144        if (rx51_spk_func == ucontrol->value.enumerated.item[0])
 145                return 0;
 146
 147        rx51_spk_func = ucontrol->value.enumerated.item[0];
 148        rx51_ext_control(&card->dapm);
 149
 150        return 1;
 151}
 152
 153static int rx51_spk_event(struct snd_soc_dapm_widget *w,
 154                          struct snd_kcontrol *k, int event)
 155{
 156        struct snd_soc_dapm_context *dapm = w->dapm;
 157        struct snd_soc_card *card = dapm->card;
 158        struct rx51_audio_pdata *pdata = snd_soc_card_get_drvdata(card);
 159
 160        gpiod_set_raw_value_cansleep(pdata->speaker_amp_gpio,
 161                                     !!SND_SOC_DAPM_EVENT_ON(event));
 162
 163        return 0;
 164}
 165
 166static int rx51_get_input(struct snd_kcontrol *kcontrol,
 167                          struct snd_ctl_elem_value *ucontrol)
 168{
 169        ucontrol->value.enumerated.item[0] = rx51_dmic_func;
 170
 171        return 0;
 172}
 173
 174static int rx51_set_input(struct snd_kcontrol *kcontrol,
 175                          struct snd_ctl_elem_value *ucontrol)
 176{
 177        struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 178
 179        if (rx51_dmic_func == ucontrol->value.enumerated.item[0])
 180                return 0;
 181
 182        rx51_dmic_func = ucontrol->value.enumerated.item[0];
 183        rx51_ext_control(&card->dapm);
 184
 185        return 1;
 186}
 187
 188static int rx51_get_jack(struct snd_kcontrol *kcontrol,
 189                         struct snd_ctl_elem_value *ucontrol)
 190{
 191        ucontrol->value.enumerated.item[0] = rx51_jack_func;
 192
 193        return 0;
 194}
 195
 196static int rx51_set_jack(struct snd_kcontrol *kcontrol,
 197                         struct snd_ctl_elem_value *ucontrol)
 198{
 199        struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 200
 201        if (rx51_jack_func == ucontrol->value.enumerated.item[0])
 202                return 0;
 203
 204        rx51_jack_func = ucontrol->value.enumerated.item[0];
 205        rx51_ext_control(&card->dapm);
 206
 207        return 1;
 208}
 209
 210static struct snd_soc_jack rx51_av_jack;
 211
 212static struct snd_soc_jack_gpio rx51_av_jack_gpios[] = {
 213        {
 214                .name = "avdet-gpio",
 215                .report = SND_JACK_HEADSET,
 216                .invert = 1,
 217                .debounce_time = 200,
 218        },
 219};
 220
 221static const struct snd_soc_dapm_widget aic34_dapm_widgets[] = {
 222        SND_SOC_DAPM_SPK("Ext Spk", rx51_spk_event),
 223        SND_SOC_DAPM_MIC("DMic", NULL),
 224        SND_SOC_DAPM_HP("Headphone Jack", NULL),
 225        SND_SOC_DAPM_MIC("HS Mic", NULL),
 226        SND_SOC_DAPM_LINE("FM Transmitter", NULL),
 227        SND_SOC_DAPM_SPK("Earphone", NULL),
 228};
 229
 230static const struct snd_soc_dapm_route audio_map[] = {
 231        {"Ext Spk", NULL, "HPLOUT"},
 232        {"Ext Spk", NULL, "HPROUT"},
 233        {"Ext Spk", NULL, "HPLCOM"},
 234        {"Ext Spk", NULL, "HPRCOM"},
 235        {"FM Transmitter", NULL, "LLOUT"},
 236        {"FM Transmitter", NULL, "RLOUT"},
 237
 238        {"Headphone Jack", NULL, "TPA6130A2 HPLEFT"},
 239        {"Headphone Jack", NULL, "TPA6130A2 HPRIGHT"},
 240        {"TPA6130A2 LEFTIN", NULL, "LLOUT"},
 241        {"TPA6130A2 RIGHTIN", NULL, "RLOUT"},
 242
 243        {"DMic Rate 64", NULL, "DMic"},
 244        {"DMic", NULL, "Mic Bias"},
 245
 246        {"b LINE2R", NULL, "MONO_LOUT"},
 247        {"Earphone", NULL, "b HPLOUT"},
 248
 249        {"LINE1L", NULL, "HS Mic"},
 250        {"HS Mic", NULL, "b Mic Bias"},
 251};
 252
 253static const char * const spk_function[] = {"Off", "On"};
 254static const char * const input_function[] = {"ADC", "Digital Mic"};
 255static const char * const jack_function[] = {
 256        "Off", "TV-OUT", "Headphone", "Headset"
 257};
 258
 259static const struct soc_enum rx51_enum[] = {
 260        SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
 261        SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
 262        SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
 263};
 264
 265static const struct snd_kcontrol_new aic34_rx51_controls[] = {
 266        SOC_ENUM_EXT("Speaker Function", rx51_enum[0],
 267                     rx51_get_spk, rx51_set_spk),
 268        SOC_ENUM_EXT("Input Select",  rx51_enum[1],
 269                     rx51_get_input, rx51_set_input),
 270        SOC_ENUM_EXT("Jack Function", rx51_enum[2],
 271                     rx51_get_jack, rx51_set_jack),
 272        SOC_DAPM_PIN_SWITCH("FM Transmitter"),
 273        SOC_DAPM_PIN_SWITCH("Earphone"),
 274};
 275
 276static int rx51_aic34_init(struct snd_soc_pcm_runtime *rtd)
 277{
 278        struct snd_soc_card *card = rtd->card;
 279        struct rx51_audio_pdata *pdata = snd_soc_card_get_drvdata(card);
 280        int err;
 281
 282        snd_soc_limit_volume(card, "TPA6130A2 Headphone Playback Volume", 42);
 283
 284        err = omap_mcbsp_st_add_controls(rtd, 2);
 285        if (err < 0) {
 286                dev_err(card->dev, "Failed to add MCBSP controls\n");
 287                return err;
 288        }
 289
 290        /* AV jack detection */
 291        err = snd_soc_card_jack_new(rtd->card, "AV Jack",
 292                                    SND_JACK_HEADSET | SND_JACK_VIDEOOUT,
 293                                    &rx51_av_jack, NULL, 0);
 294        if (err) {
 295                dev_err(card->dev, "Failed to add AV Jack\n");
 296                return err;
 297        }
 298
 299        /* prepare gpio for snd_soc_jack_add_gpios */
 300        rx51_av_jack_gpios[0].gpio = desc_to_gpio(pdata->jack_detection_gpio);
 301        devm_gpiod_put(card->dev, pdata->jack_detection_gpio);
 302
 303        err = snd_soc_jack_add_gpios(&rx51_av_jack,
 304                                     ARRAY_SIZE(rx51_av_jack_gpios),
 305                                     rx51_av_jack_gpios);
 306        if (err) {
 307                dev_err(card->dev, "Failed to add GPIOs\n");
 308                return err;
 309        }
 310
 311        return err;
 312}
 313
 314static int rx51_card_remove(struct snd_soc_card *card)
 315{
 316        snd_soc_jack_free_gpios(&rx51_av_jack, ARRAY_SIZE(rx51_av_jack_gpios),
 317                                rx51_av_jack_gpios);
 318
 319        return 0;
 320}
 321
 322/* Digital audio interface glue - connects codec <--> CPU */
 323static struct snd_soc_dai_link rx51_dai[] = {
 324        {
 325                .name = "TLV320AIC34",
 326                .stream_name = "AIC34",
 327                .cpu_dai_name = "omap-mcbsp.2",
 328                .codec_dai_name = "tlv320aic3x-hifi",
 329                .platform_name = "omap-mcbsp.2",
 330                .codec_name = "tlv320aic3x-codec.2-0018",
 331                .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
 332                           SND_SOC_DAIFMT_CBM_CFM,
 333                .init = rx51_aic34_init,
 334                .ops = &rx51_ops,
 335        },
 336};
 337
 338static struct snd_soc_aux_dev rx51_aux_dev[] = {
 339        {
 340                .name = "TLV320AIC34b",
 341                .codec_name = "tlv320aic3x-codec.2-0019",
 342        },
 343        {
 344                .name = "TPA61320A2",
 345                .codec_name = "tpa6130a2.2-0060",
 346        },
 347};
 348
 349static struct snd_soc_codec_conf rx51_codec_conf[] = {
 350        {
 351                .dev_name = "tlv320aic3x-codec.2-0019",
 352                .name_prefix = "b",
 353        },
 354        {
 355                .dev_name = "tpa6130a2.2-0060",
 356                .name_prefix = "TPA6130A2",
 357        },
 358};
 359
 360/* Audio card */
 361static struct snd_soc_card rx51_sound_card = {
 362        .name = "RX-51",
 363        .owner = THIS_MODULE,
 364        .remove = rx51_card_remove,
 365        .dai_link = rx51_dai,
 366        .num_links = ARRAY_SIZE(rx51_dai),
 367        .aux_dev = rx51_aux_dev,
 368        .num_aux_devs = ARRAY_SIZE(rx51_aux_dev),
 369        .codec_conf = rx51_codec_conf,
 370        .num_configs = ARRAY_SIZE(rx51_codec_conf),
 371        .fully_routed = true,
 372
 373        .controls = aic34_rx51_controls,
 374        .num_controls = ARRAY_SIZE(aic34_rx51_controls),
 375        .dapm_widgets = aic34_dapm_widgets,
 376        .num_dapm_widgets = ARRAY_SIZE(aic34_dapm_widgets),
 377        .dapm_routes = audio_map,
 378        .num_dapm_routes = ARRAY_SIZE(audio_map),
 379};
 380
 381static int rx51_soc_probe(struct platform_device *pdev)
 382{
 383        struct rx51_audio_pdata *pdata;
 384        struct device_node *np = pdev->dev.of_node;
 385        struct snd_soc_card *card = &rx51_sound_card;
 386        int err;
 387
 388        if (!machine_is_nokia_rx51() && !of_machine_is_compatible("nokia,omap3-n900"))
 389                return -ENODEV;
 390
 391        card->dev = &pdev->dev;
 392
 393        if (np) {
 394                struct device_node *dai_node;
 395
 396                dai_node = of_parse_phandle(np, "nokia,cpu-dai", 0);
 397                if (!dai_node) {
 398                        dev_err(&pdev->dev, "McBSP node is not provided\n");
 399                        return -EINVAL;
 400                }
 401                rx51_dai[0].cpu_dai_name = NULL;
 402                rx51_dai[0].platform_name = NULL;
 403                rx51_dai[0].cpu_of_node = dai_node;
 404                rx51_dai[0].platform_of_node = dai_node;
 405
 406                dai_node = of_parse_phandle(np, "nokia,audio-codec", 0);
 407                if (!dai_node) {
 408                        dev_err(&pdev->dev, "Codec node is not provided\n");
 409                        return -EINVAL;
 410                }
 411                rx51_dai[0].codec_name = NULL;
 412                rx51_dai[0].codec_of_node = dai_node;
 413
 414                dai_node = of_parse_phandle(np, "nokia,audio-codec", 1);
 415                if (!dai_node) {
 416                        dev_err(&pdev->dev, "Auxiliary Codec node is not provided\n");
 417                        return -EINVAL;
 418                }
 419                rx51_aux_dev[0].codec_name = NULL;
 420                rx51_aux_dev[0].codec_of_node = dai_node;
 421                rx51_codec_conf[0].dev_name = NULL;
 422                rx51_codec_conf[0].of_node = dai_node;
 423
 424                dai_node = of_parse_phandle(np, "nokia,headphone-amplifier", 0);
 425                if (!dai_node) {
 426                        dev_err(&pdev->dev, "Headphone amplifier node is not provided\n");
 427                        return -EINVAL;
 428                }
 429                rx51_aux_dev[1].codec_name = NULL;
 430                rx51_aux_dev[1].codec_of_node = dai_node;
 431                rx51_codec_conf[1].dev_name = NULL;
 432                rx51_codec_conf[1].of_node = dai_node;
 433        }
 434
 435        pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
 436        if (pdata == NULL) {
 437                dev_err(card->dev, "failed to create private data\n");
 438                return -ENOMEM;
 439        }
 440        snd_soc_card_set_drvdata(card, pdata);
 441
 442        pdata->tvout_selection_gpio = devm_gpiod_get(card->dev,
 443                                                     "tvout-selection",
 444                                                     GPIOD_OUT_LOW);
 445        if (IS_ERR(pdata->tvout_selection_gpio)) {
 446                dev_err(card->dev, "could not get tvout selection gpio\n");
 447                return PTR_ERR(pdata->tvout_selection_gpio);
 448        }
 449
 450        pdata->jack_detection_gpio = devm_gpiod_get(card->dev,
 451                                                    "jack-detection",
 452                                                    GPIOD_ASIS);
 453        if (IS_ERR(pdata->jack_detection_gpio)) {
 454                dev_err(card->dev, "could not get jack detection gpio\n");
 455                return PTR_ERR(pdata->jack_detection_gpio);
 456        }
 457
 458        pdata->eci_sw_gpio = devm_gpiod_get(card->dev, "eci-switch",
 459                                            GPIOD_OUT_HIGH);
 460        if (IS_ERR(pdata->eci_sw_gpio)) {
 461                dev_err(card->dev, "could not get eci switch gpio\n");
 462                return PTR_ERR(pdata->eci_sw_gpio);
 463        }
 464
 465        pdata->speaker_amp_gpio = devm_gpiod_get(card->dev,
 466                                                 "speaker-amplifier",
 467                                                 GPIOD_OUT_LOW);
 468        if (IS_ERR(pdata->speaker_amp_gpio)) {
 469                dev_err(card->dev, "could not get speaker enable gpio\n");
 470                return PTR_ERR(pdata->speaker_amp_gpio);
 471        }
 472
 473        err = devm_snd_soc_register_card(card->dev, card);
 474        if (err) {
 475                dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", err);
 476                return err;
 477        }
 478
 479        return 0;
 480}
 481
 482#if defined(CONFIG_OF)
 483static const struct of_device_id rx51_audio_of_match[] = {
 484        { .compatible = "nokia,n900-audio", },
 485        {},
 486};
 487MODULE_DEVICE_TABLE(of, rx51_audio_of_match);
 488#endif
 489
 490static struct platform_driver rx51_soc_driver = {
 491        .driver = {
 492                .name = "rx51-audio",
 493                .of_match_table = of_match_ptr(rx51_audio_of_match),
 494        },
 495        .probe = rx51_soc_probe,
 496};
 497
 498module_platform_driver(rx51_soc_driver);
 499
 500MODULE_AUTHOR("Nokia Corporation");
 501MODULE_DESCRIPTION("ALSA SoC Nokia RX-51");
 502MODULE_LICENSE("GPL");
 503MODULE_ALIAS("platform:rx51-audio");
 504
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