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#include "../codecs/tpa6130a2.h"
  37
  38#include <asm/mach-types.h>
  39
  40#include "omap-mcbsp.h"
  41
  42enum {
  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
  49struct 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
  56static int rx51_spk_func;
  57static int rx51_dmic_func;
  58static int rx51_jack_func;
  59
  60static 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
 104static 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
 117static 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
 128static struct snd_soc_ops rx51_ops = {
 129        .startup = rx51_startup,
 130        .hw_params = rx51_hw_params,
 131};
 132
 133static 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
 141static 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
 155static 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
 168static 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
 181static 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
 189static 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
 203static 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
 211static 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
 225static struct snd_soc_jack rx51_av_jack;
 226
 227static 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
 236static 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
 245static 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, "Mic Bias"},
 254        {"Mic Bias", NULL, "DMic"},
 255
 256        {"b LINE2R", NULL, "MONO_LOUT"},
 257        {"Earphone", NULL, "b HPLOUT"},
 258
 259        {"LINE1L", NULL, "b Mic Bias"},
 260        {"b Mic Bias", NULL, "HS Mic"}
 261};
 262
 263static const char * const spk_function[] = {"Off", "On"};
 264static const char * const input_function[] = {"ADC", "Digital Mic"};
 265static const char * const jack_function[] = {
 266        "Off", "TV-OUT", "Headphone", "Headset"
 267};
 268
 269static 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
 275static 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
 286static 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_jack_new(codec, "AV Jack",
 315                               SND_JACK_HEADSET | SND_JACK_VIDEOOUT,
 316                               &rx51_av_jack);
 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
 337static 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 */
 346static 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
 361static struct snd_soc_aux_dev rx51_aux_dev[] = {
 362        {
 363                .name = "TLV320AIC34b",
 364                .codec_name = "tlv320aic3x-codec.2-0019",
 365        },
 366};
 367
 368static 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 */
 376static 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
 395static 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)
 512static const struct of_device_id rx51_audio_of_match[] = {
 513        { .compatible = "nokia,n900-audio", },
 514        {},
 515};
 516MODULE_DEVICE_TABLE(of, rx51_audio_of_match);
 517#endif
 518
 519static 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
 527module_platform_driver(rx51_soc_driver);
 528
 529MODULE_AUTHOR("Nokia Corporation");
 530MODULE_DESCRIPTION("ALSA SoC Nokia RX-51");
 531MODULE_LICENSE("GPL");
 532MODULE_ALIAS("platform:rx51-audio");
 533
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