sound/soc/codecs/da7219-aad.c

   1 /*
   2  * da7219-aad.c - Dialog DA7219 ALSA SoC AAD Driver
   3  *
   4  * Copyright (c) 2015 Dialog Semiconductor Ltd.
   5  *
   6  * Author: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
   7  *
   8  * This program is free software; you can redistribute  it and/or modify it
   9  * under  the terms of  the GNU General  Public License as published by the
  10  * Free Software Foundation;  either version 2 of the  License, or (at your
  11  * option) any later version.
  12  */
  13
  14 #include <linux/module.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/of_device.h>
  17 #include <linux/of_irq.h>
  18 #include <linux/pm_wakeirq.h>
  19 #include <linux/slab.h>
  20 #include <linux/delay.h>
  21 #include <linux/workqueue.h>
  22 #include <sound/soc.h>
  23 #include <sound/jack.h>
  24 #include <sound/da7219.h>
  25
  26 #include "da7219.h"
  27 #include "da7219-aad.h"
  28
  29
  30 /*
  31  * Detection control
  32  */
  33
  34 void da7219_aad_jack_det(struct snd_soc_codec *codec, struct snd_soc_jack *jack)
  35 {
  36         struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
  37
  38         da7219->aad->jack = jack;
  39         da7219->aad->jack_inserted = false;
  40
  41         /* Send an initial empty report */
  42         snd_soc_jack_report(jack, 0, DA7219_AAD_REPORT_ALL_MASK);
  43
  44         /* Enable/Disable jack detection */
  45         snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
  46                             DA7219_ACCDET_EN_MASK,
  47                             (jack ? DA7219_ACCDET_EN_MASK : 0));
  48 }
  49 EXPORT_SYMBOL_GPL(da7219_aad_jack_det);
  50
  51 /*
  52  * Button/HPTest work
  53  */
  54
  55 static void da7219_aad_btn_det_work(struct work_struct *work)
  56 {
  57         struct da7219_aad_priv *da7219_aad =
  58                 container_of(work, struct da7219_aad_priv, btn_det_work);
  59         struct snd_soc_codec *codec = da7219_aad->codec;
  60         struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
  61         u8 statusa, micbias_ctrl;
  62         bool micbias_up = false;
  63         int retries = 0;
  64
  65         /* Drive headphones/lineout */
  66         snd_soc_update_bits(codec, DA7219_HP_L_CTRL,
  67                             DA7219_HP_L_AMP_OE_MASK,
  68                             DA7219_HP_L_AMP_OE_MASK);
  69         snd_soc_update_bits(codec, DA7219_HP_R_CTRL,
  70                             DA7219_HP_R_AMP_OE_MASK,
  71                             DA7219_HP_R_AMP_OE_MASK);
  72
  73         /* Make sure mic bias is up */
  74         snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
  75         snd_soc_dapm_sync(dapm);
  76
  77         do {
  78                 statusa = snd_soc_read(codec, DA7219_ACCDET_STATUS_A);
  79                 if (statusa & DA7219_MICBIAS_UP_STS_MASK)
  80                         micbias_up = true;
  81                 else if (retries++ < DA7219_AAD_MICBIAS_CHK_RETRIES)
  82                         msleep(DA7219_AAD_MICBIAS_CHK_DELAY);
  83         } while ((!micbias_up) && (retries < DA7219_AAD_MICBIAS_CHK_RETRIES));
  84
  85         if (retries >= DA7219_AAD_MICBIAS_CHK_RETRIES)
  86                 dev_warn(codec->dev, "Mic bias status check timed out");
  87
  88         /*
  89          * Mic bias pulse required to enable mic, must be done before enabling
  90          * button detection to prevent erroneous button readings.
  91          */
  92         if (da7219_aad->micbias_pulse_lvl && da7219_aad->micbias_pulse_time) {
  93                 /* Pulse higher level voltage */
  94                 micbias_ctrl = snd_soc_read(codec, DA7219_MICBIAS_CTRL);
  95                 snd_soc_update_bits(codec, DA7219_MICBIAS_CTRL,
  96                                     DA7219_MICBIAS1_LEVEL_MASK,
  97                                     da7219_aad->micbias_pulse_lvl);
  98                 msleep(da7219_aad->micbias_pulse_time);
  99                 snd_soc_write(codec, DA7219_MICBIAS_CTRL, micbias_ctrl);
 100
 101         }
 102
 103         snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
 104                             DA7219_BUTTON_CONFIG_MASK,
 105                             da7219_aad->btn_cfg);
 106 }
 107
 108 static void da7219_aad_hptest_work(struct work_struct *work)
 109 {
 110         struct da7219_aad_priv *da7219_aad =
 111                 container_of(work, struct da7219_aad_priv, hptest_work);
 112         struct snd_soc_codec *codec = da7219_aad->codec;
 113         struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
 114         struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
 115
 116         u16 tonegen_freq_hptest;
 117         u8 accdet_cfg8;
 118         int report = 0;
 119
 120         /* Lock DAPM and any Kcontrols that are affected by this test */
 121         snd_soc_dapm_mutex_lock(dapm);
 122         mutex_lock(&da7219->lock);
 123
 124         /* Bypass cache so it saves current settings */
 125         regcache_cache_bypass(da7219->regmap, true);
 126
 127         /* Make sure Tone Generator is disabled */
 128         snd_soc_write(codec, DA7219_TONE_GEN_CFG1, 0);
 129
 130         /* Enable HPTest block, 1KOhms check */
 131         snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_8,
 132                             DA7219_HPTEST_EN_MASK | DA7219_HPTEST_RES_SEL_MASK,
 133                             DA7219_HPTEST_EN_MASK |
 134                             DA7219_HPTEST_RES_SEL_1KOHMS);
 135
 136         /* Set gains to 0db */
 137         snd_soc_write(codec, DA7219_DAC_L_GAIN, DA7219_DAC_DIGITAL_GAIN_0DB);
 138         snd_soc_write(codec, DA7219_DAC_R_GAIN, DA7219_DAC_DIGITAL_GAIN_0DB);
 139         snd_soc_write(codec, DA7219_HP_L_GAIN, DA7219_HP_AMP_GAIN_0DB);
 140         snd_soc_write(codec, DA7219_HP_R_GAIN, DA7219_HP_AMP_GAIN_0DB);
 141
 142         /* Disable DAC filters, EQs and soft mute */
 143         snd_soc_update_bits(codec, DA7219_DAC_FILTERS1, DA7219_HPF_MODE_MASK,
 144                             0);
 145         snd_soc_update_bits(codec, DA7219_DAC_FILTERS4, DA7219_DAC_EQ_EN_MASK,
 146                             0);
 147         snd_soc_update_bits(codec, DA7219_DAC_FILTERS5,
 148                             DA7219_DAC_SOFTMUTE_EN_MASK, 0);
 149
 150         /* Enable HP left & right paths */
 151         snd_soc_update_bits(codec, DA7219_CP_CTRL, DA7219_CP_EN_MASK,
 152                             DA7219_CP_EN_MASK);
 153         snd_soc_update_bits(codec, DA7219_DIG_ROUTING_DAC,
 154                             DA7219_DAC_L_SRC_MASK | DA7219_DAC_R_SRC_MASK,
 155                             DA7219_DAC_L_SRC_TONEGEN |
 156                             DA7219_DAC_R_SRC_TONEGEN);
 157         snd_soc_update_bits(codec, DA7219_DAC_L_CTRL,
 158                             DA7219_DAC_L_EN_MASK | DA7219_DAC_L_MUTE_EN_MASK,
 159                             DA7219_DAC_L_EN_MASK);
 160         snd_soc_update_bits(codec, DA7219_DAC_R_CTRL,
 161                             DA7219_DAC_R_EN_MASK | DA7219_DAC_R_MUTE_EN_MASK,
 162                             DA7219_DAC_R_EN_MASK);
 163         snd_soc_update_bits(codec, DA7219_MIXOUT_L_SELECT,
 164                             DA7219_MIXOUT_L_MIX_SELECT_MASK,
 165                             DA7219_MIXOUT_L_MIX_SELECT_MASK);
 166         snd_soc_update_bits(codec, DA7219_MIXOUT_R_SELECT,
 167                             DA7219_MIXOUT_R_MIX_SELECT_MASK,
 168                             DA7219_MIXOUT_R_MIX_SELECT_MASK);
 169         snd_soc_update_bits(codec, DA7219_DROUTING_ST_OUTFILT_1L,
 170                             DA7219_OUTFILT_ST_1L_SRC_MASK,
 171                             DA7219_DMIX_ST_SRC_OUTFILT1L);
 172         snd_soc_update_bits(codec, DA7219_DROUTING_ST_OUTFILT_1R,
 173                             DA7219_OUTFILT_ST_1R_SRC_MASK,
 174                             DA7219_DMIX_ST_SRC_OUTFILT1R);
 175         snd_soc_update_bits(codec, DA7219_MIXOUT_L_CTRL,
 176                             DA7219_MIXOUT_L_AMP_EN_MASK,
 177                             DA7219_MIXOUT_L_AMP_EN_MASK);
 178         snd_soc_update_bits(codec, DA7219_MIXOUT_R_CTRL,
 179                             DA7219_MIXOUT_R_AMP_EN_MASK,
 180                             DA7219_MIXOUT_R_AMP_EN_MASK);
 181         snd_soc_write(codec, DA7219_HP_L_CTRL,
 182                       DA7219_HP_L_AMP_OE_MASK | DA7219_HP_L_AMP_EN_MASK);
 183         snd_soc_write(codec, DA7219_HP_R_CTRL,
 184                       DA7219_HP_R_AMP_OE_MASK | DA7219_HP_R_AMP_EN_MASK);
 185
 186         /* Configure & start Tone Generator */
 187         snd_soc_write(codec, DA7219_TONE_GEN_ON_PER, DA7219_BEEP_ON_PER_MASK);
 188         tonegen_freq_hptest = cpu_to_le16(DA7219_AAD_HPTEST_RAMP_FREQ);
 189         regmap_raw_write(da7219->regmap, DA7219_TONE_GEN_FREQ1_L,
 190                          &tonegen_freq_hptest, sizeof(tonegen_freq_hptest));
 191         snd_soc_update_bits(codec, DA7219_TONE_GEN_CFG2,
 192                             DA7219_SWG_SEL_MASK | DA7219_TONE_GEN_GAIN_MASK,
 193                             DA7219_SWG_SEL_SRAMP |
 194                             DA7219_TONE_GEN_GAIN_MINUS_15DB);
 195         snd_soc_write(codec, DA7219_TONE_GEN_CFG1, DA7219_START_STOPN_MASK);
 196
 197         msleep(DA7219_AAD_HPTEST_PERIOD);
 198
 199         /* Grab comparator reading */
 200         accdet_cfg8 = snd_soc_read(codec, DA7219_ACCDET_CONFIG_8);
 201         if (accdet_cfg8 & DA7219_HPTEST_COMP_MASK)
 202                 report |= SND_JACK_HEADPHONE;
 203         else
 204                 report |= SND_JACK_LINEOUT;
 205
 206         /* Stop tone generator */
 207         snd_soc_write(codec, DA7219_TONE_GEN_CFG1, 0);
 208
 209         msleep(DA7219_AAD_HPTEST_PERIOD);
 210
 211         /* Restore original settings from cache */
 212         regcache_mark_dirty(da7219->regmap);
 213         regcache_sync_region(da7219->regmap, DA7219_HP_L_CTRL,
 214                              DA7219_HP_R_CTRL);
 215         regcache_sync_region(da7219->regmap, DA7219_MIXOUT_L_CTRL,
 216                              DA7219_MIXOUT_R_CTRL);
 217         regcache_sync_region(da7219->regmap, DA7219_DROUTING_ST_OUTFILT_1L,
 218                              DA7219_DROUTING_ST_OUTFILT_1R);
 219         regcache_sync_region(da7219->regmap, DA7219_MIXOUT_L_SELECT,
 220                              DA7219_MIXOUT_R_SELECT);
 221         regcache_sync_region(da7219->regmap, DA7219_DAC_L_CTRL,
 222                              DA7219_DAC_R_CTRL);
 223         regcache_sync_region(da7219->regmap, DA7219_DIG_ROUTING_DAC,
 224                              DA7219_DIG_ROUTING_DAC);
 225         regcache_sync_region(da7219->regmap, DA7219_CP_CTRL, DA7219_CP_CTRL);
 226         regcache_sync_region(da7219->regmap, DA7219_DAC_FILTERS5,
 227                              DA7219_DAC_FILTERS5);
 228         regcache_sync_region(da7219->regmap, DA7219_DAC_FILTERS4,
 229                              DA7219_DAC_FILTERS1);
 230         regcache_sync_region(da7219->regmap, DA7219_HP_L_GAIN,
 231                              DA7219_HP_R_GAIN);
 232         regcache_sync_region(da7219->regmap, DA7219_DAC_L_GAIN,
 233                              DA7219_DAC_R_GAIN);
 234         regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_ON_PER,
 235                              DA7219_TONE_GEN_ON_PER);
 236         regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_FREQ1_L,
 237                              DA7219_TONE_GEN_FREQ1_U);
 238         regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_CFG1,
 239                              DA7219_TONE_GEN_CFG2);
 240
 241         regcache_cache_bypass(da7219->regmap, false);
 242
 243         /* Disable HPTest block */
 244         snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_8,
 245                             DA7219_HPTEST_EN_MASK, 0);
 246
 247         /* Drive Headphones/lineout */
 248         snd_soc_update_bits(codec, DA7219_HP_L_CTRL, DA7219_HP_L_AMP_OE_MASK,
 249                             DA7219_HP_L_AMP_OE_MASK);
 250         snd_soc_update_bits(codec, DA7219_HP_R_CTRL, DA7219_HP_R_AMP_OE_MASK,
 251                             DA7219_HP_R_AMP_OE_MASK);
 252
 253         mutex_unlock(&da7219->lock);
 254         snd_soc_dapm_mutex_unlock(dapm);
 255
 256         /*
 257          * Only send report if jack hasn't been removed during process,
 258          * otherwise it's invalid and we drop it.
 259          */
 260         if (da7219_aad->jack_inserted)
 261                 snd_soc_jack_report(da7219_aad->jack, report,
 262                                     SND_JACK_HEADSET | SND_JACK_LINEOUT);
 263 }
 264
 265
 266 /*
 267  * IRQ
 268  */
 269
 270 static irqreturn_t da7219_aad_irq_thread(int irq, void *data)
 271 {
 272         struct da7219_aad_priv *da7219_aad = data;
 273         struct snd_soc_codec *codec = da7219_aad->codec;
 274         struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
 275         struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
 276         u8 events[DA7219_AAD_IRQ_REG_MAX];
 277         u8 statusa;
 278         int i, report = 0, mask = 0;
 279
 280         /* Read current IRQ events */
 281         regmap_bulk_read(da7219->regmap, DA7219_ACCDET_IRQ_EVENT_A,
 282                          events, DA7219_AAD_IRQ_REG_MAX);
 283
 284         if (!events[DA7219_AAD_IRQ_REG_A] && !events[DA7219_AAD_IRQ_REG_B])
 285                 return IRQ_NONE;
 286
 287         /* Read status register for jack insertion & type status */
 288         statusa = snd_soc_read(codec, DA7219_ACCDET_STATUS_A);
 289
 290         /* Clear events */
 291         regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_EVENT_A,
 292                           events, DA7219_AAD_IRQ_REG_MAX);
 293
 294         dev_dbg(codec->dev, "IRQ events = 0x%x|0x%x, status = 0x%x\n",
 295                 events[DA7219_AAD_IRQ_REG_A], events[DA7219_AAD_IRQ_REG_B],
 296                 statusa);
 297
 298         if (statusa & DA7219_JACK_INSERTION_STS_MASK) {
 299                 /* Jack Insertion */
 300                 if (events[DA7219_AAD_IRQ_REG_A] &
 301                     DA7219_E_JACK_INSERTED_MASK) {
 302                         report |= SND_JACK_MECHANICAL;
 303                         mask |= SND_JACK_MECHANICAL;
 304                         da7219_aad->jack_inserted = true;
 305                 }
 306
 307                 /* Jack type detection */
 308                 if (events[DA7219_AAD_IRQ_REG_A] &
 309                     DA7219_E_JACK_DETECT_COMPLETE_MASK) {
 310                         /*
 311                          * If 4-pole, then enable button detection, else perform
 312                          * HP impedance test to determine output type to report.
 313                          *
 314                          * We schedule work here as the tasks themselves can
 315                          * take time to complete, and in particular for hptest
 316                          * we want to be able to check if the jack was removed
 317                          * during the procedure as this will invalidate the
 318                          * result. By doing this as work, the IRQ thread can
 319                          * handle a removal, and we can check at the end of
 320                          * hptest if we have a valid result or not.
 321                          */
 322                         if (statusa & DA7219_JACK_TYPE_STS_MASK) {
 323                                 report |= SND_JACK_HEADSET;
 324                                 mask |= SND_JACK_HEADSET | SND_JACK_LINEOUT;
 325                                 schedule_work(&da7219_aad->btn_det_work);
 326                         } else {
 327                                 schedule_work(&da7219_aad->hptest_work);
 328                         }
 329                 }
 330
 331                 /* Button support for 4-pole jack */
 332                 if (statusa & DA7219_JACK_TYPE_STS_MASK) {
 333                         for (i = 0; i < DA7219_AAD_MAX_BUTTONS; ++i) {
 334                                 /* Button Press */
 335                                 if (events[DA7219_AAD_IRQ_REG_B] &
 336                                     (DA7219_E_BUTTON_A_PRESSED_MASK << i)) {
 337                                         report |= SND_JACK_BTN_0 >> i;
 338                                         mask |= SND_JACK_BTN_0 >> i;
 339                                 }
 340                         }
 341                         snd_soc_jack_report(da7219_aad->jack, report, mask);
 342
 343                         for (i = 0; i < DA7219_AAD_MAX_BUTTONS; ++i) {
 344                                 /* Button Release */
 345                                 if (events[DA7219_AAD_IRQ_REG_B] &
 346                                     (DA7219_E_BUTTON_A_RELEASED_MASK >> i)) {
 347                                         report &= ~(SND_JACK_BTN_0 >> i);
 348                                         mask |= SND_JACK_BTN_0 >> i;
 349                                 }
 350                         }
 351                 }
 352         } else {
 353                 /* Jack removal */
 354                 if (events[DA7219_AAD_IRQ_REG_A] & DA7219_E_JACK_REMOVED_MASK) {
 355                         report = 0;
 356                         mask |= DA7219_AAD_REPORT_ALL_MASK;
 357                         da7219_aad->jack_inserted = false;
 358
 359                         /* Un-drive headphones/lineout */
 360                         snd_soc_update_bits(codec, DA7219_HP_R_CTRL,
 361                                             DA7219_HP_R_AMP_OE_MASK, 0);
 362                         snd_soc_update_bits(codec, DA7219_HP_L_CTRL,
 363                                             DA7219_HP_L_AMP_OE_MASK, 0);
 364
 365                         /* Ensure button detection disabled */
 366                         snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
 367                                             DA7219_BUTTON_CONFIG_MASK, 0);
 368
 369                         /* Disable mic bias */
 370                         snd_soc_dapm_disable_pin(dapm, "Mic Bias");
 371                         snd_soc_dapm_sync(dapm);
 372
 373                         /* Cancel any pending work */
 374                         cancel_work_sync(&da7219_aad->btn_det_work);
 375                         cancel_work_sync(&da7219_aad->hptest_work);
 376                 }
 377         }
 378
 379         snd_soc_jack_report(da7219_aad->jack, report, mask);
 380
 381         return IRQ_HANDLED;
 382 }
 383
 384 /*
 385  * DT to pdata conversion
 386  */
 387
 388 static enum da7219_aad_micbias_pulse_lvl
 389         da7219_aad_of_micbias_pulse_lvl(struct snd_soc_codec *codec, u32 val)
 390 {
 391         switch (val) {
 392         case 2800:
 393                 return DA7219_AAD_MICBIAS_PULSE_LVL_2_8V;
 394         case 2900:
 395                 return DA7219_AAD_MICBIAS_PULSE_LVL_2_9V;
 396         default:
 397                 dev_warn(codec->dev, "Invalid micbias pulse level");
 398                 return DA7219_AAD_MICBIAS_PULSE_LVL_OFF;
 399         }
 400 }
 401
 402 static enum da7219_aad_btn_cfg
 403         da7219_aad_of_btn_cfg(struct snd_soc_codec *codec, u32 val)
 404 {
 405         switch (val) {
 406         case 2:
 407                 return DA7219_AAD_BTN_CFG_2MS;
 408         case 5:
 409                 return DA7219_AAD_BTN_CFG_5MS;
 410         case 10:
 411                 return DA7219_AAD_BTN_CFG_10MS;
 412         case 50:
 413                 return DA7219_AAD_BTN_CFG_50MS;
 414         case 100:
 415                 return DA7219_AAD_BTN_CFG_100MS;
 416         case 200:
 417                 return DA7219_AAD_BTN_CFG_200MS;
 418         case 500:
 419                 return DA7219_AAD_BTN_CFG_500MS;
 420         default:
 421                 dev_warn(codec->dev, "Invalid button config");
 422                 return DA7219_AAD_BTN_CFG_10MS;
 423         }
 424 }
 425
 426 static enum da7219_aad_mic_det_thr
 427         da7219_aad_of_mic_det_thr(struct snd_soc_codec *codec, u32 val)
 428 {
 429         switch (val) {
 430         case 200:
 431                 return DA7219_AAD_MIC_DET_THR_200_OHMS;
 432         case 500:
 433                 return DA7219_AAD_MIC_DET_THR_500_OHMS;
 434         case 750:
 435                 return DA7219_AAD_MIC_DET_THR_750_OHMS;
 436         case 1000:
 437                 return DA7219_AAD_MIC_DET_THR_1000_OHMS;
 438         default:
 439                 dev_warn(codec->dev, "Invalid mic detect threshold");
 440                 return DA7219_AAD_MIC_DET_THR_500_OHMS;
 441         }
 442 }
 443
 444 static enum da7219_aad_jack_ins_deb
 445         da7219_aad_of_jack_ins_deb(struct snd_soc_codec *codec, u32 val)
 446 {
 447         switch (val) {
 448         case 5:
 449                 return DA7219_AAD_JACK_INS_DEB_5MS;
 450         case 10:
 451                 return DA7219_AAD_JACK_INS_DEB_10MS;
 452         case 20:
 453                 return DA7219_AAD_JACK_INS_DEB_20MS;
 454         case 50:
 455                 return DA7219_AAD_JACK_INS_DEB_50MS;
 456         case 100:
 457                 return DA7219_AAD_JACK_INS_DEB_100MS;
 458         case 200:
 459                 return DA7219_AAD_JACK_INS_DEB_200MS;
 460         case 500:
 461                 return DA7219_AAD_JACK_INS_DEB_500MS;
 462         case 1000:
 463                 return DA7219_AAD_JACK_INS_DEB_1S;
 464         default:
 465                 dev_warn(codec->dev, "Invalid jack insert debounce");
 466                 return DA7219_AAD_JACK_INS_DEB_20MS;
 467         }
 468 }
 469
 470 static enum da7219_aad_jack_det_rate
 471         da7219_aad_of_jack_det_rate(struct snd_soc_codec *codec, const char *str)
 472 {
 473         if (!strcmp(str, "32ms_64ms")) {
 474                 return DA7219_AAD_JACK_DET_RATE_32_64MS;
 475         } else if (!strcmp(str, "64ms_128ms")) {
 476                 return DA7219_AAD_JACK_DET_RATE_64_128MS;
 477         } else if (!strcmp(str, "128ms_256ms")) {
 478                 return DA7219_AAD_JACK_DET_RATE_128_256MS;
 479         } else if (!strcmp(str, "256ms_512ms")) {
 480                 return DA7219_AAD_JACK_DET_RATE_256_512MS;
 481         } else {
 482                 dev_warn(codec->dev, "Invalid jack detect rate");
 483                 return DA7219_AAD_JACK_DET_RATE_256_512MS;
 484         }
 485 }
 486
 487 static enum da7219_aad_jack_rem_deb
 488         da7219_aad_of_jack_rem_deb(struct snd_soc_codec *codec, u32 val)
 489 {
 490         switch (val) {
 491         case 1:
 492                 return DA7219_AAD_JACK_REM_DEB_1MS;
 493         case 5:
 494                 return DA7219_AAD_JACK_REM_DEB_5MS;
 495         case 10:
 496                 return DA7219_AAD_JACK_REM_DEB_10MS;
 497         case 20:
 498                 return DA7219_AAD_JACK_REM_DEB_20MS;
 499         default:
 500                 dev_warn(codec->dev, "Invalid jack removal debounce");
 501                 return DA7219_AAD_JACK_REM_DEB_1MS;
 502         }
 503 }
 504
 505 static enum da7219_aad_btn_avg
 506         da7219_aad_of_btn_avg(struct snd_soc_codec *codec, u32 val)
 507 {
 508         switch (val) {
 509         case 1:
 510                 return DA7219_AAD_BTN_AVG_1;
 511         case 2:
 512                 return DA7219_AAD_BTN_AVG_2;
 513         case 4:
 514                 return DA7219_AAD_BTN_AVG_4;
 515         case 8:
 516                 return DA7219_AAD_BTN_AVG_8;
 517         default:
 518                 dev_warn(codec->dev, "Invalid button average value");
 519                 return DA7219_AAD_BTN_AVG_2;
 520         }
 521 }
 522
 523 static enum da7219_aad_adc_1bit_rpt
 524         da7219_aad_of_adc_1bit_rpt(struct snd_soc_codec *codec, u32 val)
 525 {
 526         switch (val) {
 527         case 1:
 528                 return DA7219_AAD_ADC_1BIT_RPT_1;
 529         case 2:
 530                 return DA7219_AAD_ADC_1BIT_RPT_2;
 531         case 4:
 532                 return DA7219_AAD_ADC_1BIT_RPT_4;
 533         case 8:
 534                 return DA7219_AAD_ADC_1BIT_RPT_8;
 535         default:
 536                 dev_warn(codec->dev, "Invalid ADC 1-bit repeat value");
 537                 return DA7219_AAD_ADC_1BIT_RPT_1;
 538         }
 539 }
 540
 541 static struct da7219_aad_pdata *da7219_aad_of_to_pdata(struct snd_soc_codec *codec)
 542 {
 543         struct device_node *np = codec->dev->of_node;
 544         struct device_node *aad_np = of_find_node_by_name(np, "da7219_aad");
 545         struct da7219_aad_pdata *aad_pdata;
 546         const char *of_str;
 547         u32 of_val32;
 548
 549         if (!aad_np)
 550                 return NULL;
 551
 552         aad_pdata = devm_kzalloc(codec->dev, sizeof(*aad_pdata), GFP_KERNEL);
 553         if (!aad_pdata)
 554                 goto out;
 555
 556         aad_pdata->irq = irq_of_parse_and_map(np, 0);
 557
 558         if (of_property_read_u32(aad_np, "dlg,micbias-pulse-lvl",
 559                                  &of_val32) >= 0)
 560                 aad_pdata->micbias_pulse_lvl =
 561                         da7219_aad_of_micbias_pulse_lvl(codec, of_val32);
 562         else
 563                 aad_pdata->micbias_pulse_lvl = DA7219_AAD_MICBIAS_PULSE_LVL_OFF;
 564
 565         if (of_property_read_u32(aad_np, "dlg,micbias-pulse-time",
 566                                  &of_val32) >= 0)
 567                 aad_pdata->micbias_pulse_time = of_val32;
 568
 569         if (of_property_read_u32(aad_np, "dlg,btn-cfg", &of_val32) >= 0)
 570                 aad_pdata->btn_cfg = da7219_aad_of_btn_cfg(codec, of_val32);
 571         else
 572                 aad_pdata->btn_cfg = DA7219_AAD_BTN_CFG_10MS;
 573
 574         if (of_property_read_u32(aad_np, "dlg,mic-det-thr", &of_val32) >= 0)
 575                 aad_pdata->mic_det_thr =
 576                         da7219_aad_of_mic_det_thr(codec, of_val32);
 577         else
 578                 aad_pdata->mic_det_thr = DA7219_AAD_MIC_DET_THR_500_OHMS;
 579
 580         if (of_property_read_u32(aad_np, "dlg,jack-ins-deb", &of_val32) >= 0)
 581                 aad_pdata->jack_ins_deb =
 582                         da7219_aad_of_jack_ins_deb(codec, of_val32);
 583         else
 584                 aad_pdata->jack_ins_deb = DA7219_AAD_JACK_INS_DEB_20MS;
 585
 586         if (!of_property_read_string(aad_np, "dlg,jack-det-rate", &of_str))
 587                 aad_pdata->jack_det_rate =
 588                         da7219_aad_of_jack_det_rate(codec, of_str);
 589         else
 590                 aad_pdata->jack_det_rate = DA7219_AAD_JACK_DET_RATE_256_512MS;
 591
 592         if (of_property_read_u32(aad_np, "dlg,jack-rem-deb", &of_val32) >= 0)
 593                 aad_pdata->jack_rem_deb =
 594                         da7219_aad_of_jack_rem_deb(codec, of_val32);
 595         else
 596                 aad_pdata->jack_rem_deb = DA7219_AAD_JACK_REM_DEB_1MS;
 597
 598         if (of_property_read_u32(aad_np, "dlg,a-d-btn-thr", &of_val32) >= 0)
 599                 aad_pdata->a_d_btn_thr = (u8) of_val32;
 600         else
 601                 aad_pdata->a_d_btn_thr = 0xA;
 602
 603         if (of_property_read_u32(aad_np, "dlg,d-b-btn-thr", &of_val32) >= 0)
 604                 aad_pdata->d_b_btn_thr = (u8) of_val32;
 605         else
 606                 aad_pdata->d_b_btn_thr = 0x16;
 607
 608         if (of_property_read_u32(aad_np, "dlg,b-c-btn-thr", &of_val32) >= 0)
 609                 aad_pdata->b_c_btn_thr = (u8) of_val32;
 610         else
 611                 aad_pdata->b_c_btn_thr = 0x21;
 612
 613         if (of_property_read_u32(aad_np, "dlg,c-mic-btn-thr", &of_val32) >= 0)
 614                 aad_pdata->c_mic_btn_thr = (u8) of_val32;
 615         else
 616                 aad_pdata->c_mic_btn_thr = 0x3E;
 617
 618         if (of_property_read_u32(aad_np, "dlg,btn-avg", &of_val32) >= 0)
 619                 aad_pdata->btn_avg = da7219_aad_of_btn_avg(codec, of_val32);
 620         else
 621                 aad_pdata->btn_avg = DA7219_AAD_BTN_AVG_2;
 622
 623         if (of_property_read_u32(aad_np, "dlg,adc-1bit-rpt", &of_val32) >= 0)
 624                 aad_pdata->adc_1bit_rpt =
 625                         da7219_aad_of_adc_1bit_rpt(codec, of_val32);
 626         else
 627                 aad_pdata->adc_1bit_rpt = DA7219_AAD_ADC_1BIT_RPT_1;
 628
 629 out:
 630         of_node_put(aad_np);
 631
 632         return aad_pdata;
 633 }
 634
 635 static void da7219_aad_handle_pdata(struct snd_soc_codec *codec)
 636 {
 637         struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
 638         struct da7219_aad_priv *da7219_aad = da7219->aad;
 639         struct da7219_pdata *pdata = da7219->pdata;
 640
 641         if ((pdata) && (pdata->aad_pdata)) {
 642                 struct da7219_aad_pdata *aad_pdata = pdata->aad_pdata;
 643                 u8 cfg, mask;
 644
 645                 da7219_aad->irq = aad_pdata->irq;
 646
 647                 switch (aad_pdata->micbias_pulse_lvl) {
 648                 case DA7219_AAD_MICBIAS_PULSE_LVL_2_8V:
 649                 case DA7219_AAD_MICBIAS_PULSE_LVL_2_9V:
 650                         da7219_aad->micbias_pulse_lvl =
 651                                 (aad_pdata->micbias_pulse_lvl <<
 652                                  DA7219_MICBIAS1_LEVEL_SHIFT);
 653                         break;
 654                 default:
 655                         break;
 656                 }
 657
 658                 da7219_aad->micbias_pulse_time = aad_pdata->micbias_pulse_time;
 659
 660                 switch (aad_pdata->btn_cfg) {
 661                 case DA7219_AAD_BTN_CFG_2MS:
 662                 case DA7219_AAD_BTN_CFG_5MS:
 663                 case DA7219_AAD_BTN_CFG_10MS:
 664                 case DA7219_AAD_BTN_CFG_50MS:
 665                 case DA7219_AAD_BTN_CFG_100MS:
 666                 case DA7219_AAD_BTN_CFG_200MS:
 667                 case DA7219_AAD_BTN_CFG_500MS:
 668                         da7219_aad->btn_cfg  = (aad_pdata->btn_cfg <<
 669                                                 DA7219_BUTTON_CONFIG_SHIFT);
 670                 }
 671
 672                 cfg = 0;
 673                 mask = 0;
 674                 switch (aad_pdata->mic_det_thr) {
 675                 case DA7219_AAD_MIC_DET_THR_200_OHMS:
 676                 case DA7219_AAD_MIC_DET_THR_500_OHMS:
 677                 case DA7219_AAD_MIC_DET_THR_750_OHMS:
 678                 case DA7219_AAD_MIC_DET_THR_1000_OHMS:
 679                         cfg |= (aad_pdata->mic_det_thr <<
 680                                 DA7219_MIC_DET_THRESH_SHIFT);
 681                         mask |= DA7219_MIC_DET_THRESH_MASK;
 682                 }
 683                 snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1, mask, cfg);
 684
 685                 cfg = 0;
 686                 mask = 0;
 687                 switch (aad_pdata->jack_ins_deb) {
 688                 case DA7219_AAD_JACK_INS_DEB_5MS:
 689                 case DA7219_AAD_JACK_INS_DEB_10MS:
 690                 case DA7219_AAD_JACK_INS_DEB_20MS:
 691                 case DA7219_AAD_JACK_INS_DEB_50MS:
 692                 case DA7219_AAD_JACK_INS_DEB_100MS:
 693                 case DA7219_AAD_JACK_INS_DEB_200MS:
 694                 case DA7219_AAD_JACK_INS_DEB_500MS:
 695                 case DA7219_AAD_JACK_INS_DEB_1S:
 696                         cfg |= (aad_pdata->jack_ins_deb <<
 697                                 DA7219_JACKDET_DEBOUNCE_SHIFT);
 698                         mask |= DA7219_JACKDET_DEBOUNCE_MASK;
 699                 }
 700                 switch (aad_pdata->jack_det_rate) {
 701                 case DA7219_AAD_JACK_DET_RATE_32_64MS:
 702                 case DA7219_AAD_JACK_DET_RATE_64_128MS:
 703                 case DA7219_AAD_JACK_DET_RATE_128_256MS:
 704                 case DA7219_AAD_JACK_DET_RATE_256_512MS:
 705                         cfg |= (aad_pdata->jack_det_rate <<
 706                                 DA7219_JACK_DETECT_RATE_SHIFT);
 707                         mask |= DA7219_JACK_DETECT_RATE_MASK;
 708                 }
 709                 switch (aad_pdata->jack_rem_deb) {
 710                 case DA7219_AAD_JACK_REM_DEB_1MS:
 711                 case DA7219_AAD_JACK_REM_DEB_5MS:
 712                 case DA7219_AAD_JACK_REM_DEB_10MS:
 713                 case DA7219_AAD_JACK_REM_DEB_20MS:
 714                         cfg |= (aad_pdata->jack_rem_deb <<
 715                                 DA7219_JACKDET_REM_DEB_SHIFT);
 716                         mask |= DA7219_JACKDET_REM_DEB_MASK;
 717                 }
 718                 snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_2, mask, cfg);
 719
 720                 snd_soc_write(codec, DA7219_ACCDET_CONFIG_3,
 721                               aad_pdata->a_d_btn_thr);
 722                 snd_soc_write(codec, DA7219_ACCDET_CONFIG_4,
 723                               aad_pdata->d_b_btn_thr);
 724                 snd_soc_write(codec, DA7219_ACCDET_CONFIG_5,
 725                               aad_pdata->b_c_btn_thr);
 726                 snd_soc_write(codec, DA7219_ACCDET_CONFIG_6,
 727                               aad_pdata->c_mic_btn_thr);
 728
 729                 cfg = 0;
 730                 mask = 0;
 731                 switch (aad_pdata->btn_avg) {
 732                 case DA7219_AAD_BTN_AVG_1:
 733                 case DA7219_AAD_BTN_AVG_2:
 734                 case DA7219_AAD_BTN_AVG_4:
 735                 case DA7219_AAD_BTN_AVG_8:
 736                         cfg |= (aad_pdata->btn_avg <<
 737                                 DA7219_BUTTON_AVERAGE_SHIFT);
 738                         mask |= DA7219_BUTTON_AVERAGE_MASK;
 739                 }
 740                 switch (aad_pdata->adc_1bit_rpt) {
 741                 case DA7219_AAD_ADC_1BIT_RPT_1:
 742                 case DA7219_AAD_ADC_1BIT_RPT_2:
 743                 case DA7219_AAD_ADC_1BIT_RPT_4:
 744                 case DA7219_AAD_ADC_1BIT_RPT_8:
 745                         cfg |= (aad_pdata->adc_1bit_rpt <<
 746                                DA7219_ADC_1_BIT_REPEAT_SHIFT);
 747                         mask |= DA7219_ADC_1_BIT_REPEAT_MASK;
 748                 }
 749                 snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_7, mask, cfg);
 750         }
 751 }
 752
 753
 754 /*
 755  * Init/Exit
 756  */
 757
 758 int da7219_aad_init(struct snd_soc_codec *codec)
 759 {
 760         struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
 761         struct da7219_aad_priv *da7219_aad;
 762         u8 mask[DA7219_AAD_IRQ_REG_MAX];
 763         int ret;
 764
 765         da7219_aad = devm_kzalloc(codec->dev, sizeof(*da7219_aad), GFP_KERNEL);
 766         if (!da7219_aad)
 767                 return -ENOMEM;
 768
 769         da7219->aad = da7219_aad;
 770         da7219_aad->codec = codec;
 771
 772         /* Handle any DT/platform data */
 773         if ((codec->dev->of_node) && (da7219->pdata))
 774                 da7219->pdata->aad_pdata = da7219_aad_of_to_pdata(codec);
 775
 776         da7219_aad_handle_pdata(codec);
 777
 778         /* Disable button detection */
 779         snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
 780                             DA7219_BUTTON_CONFIG_MASK, 0);
 781
 782         INIT_WORK(&da7219_aad->btn_det_work, da7219_aad_btn_det_work);
 783         INIT_WORK(&da7219_aad->hptest_work, da7219_aad_hptest_work);
 784
 785         ret = request_threaded_irq(da7219_aad->irq, NULL,
 786                                    da7219_aad_irq_thread,
 787                                    IRQF_TRIGGER_LOW | IRQF_ONESHOT,
 788                                    "da7219-aad", da7219_aad);
 789         if (ret) {
 790                 dev_err(codec->dev, "Failed to request IRQ: %d\n", ret);
 791                 return ret;
 792         }
 793
 794         /* Unmask AAD IRQs */
 795         memset(mask, 0, DA7219_AAD_IRQ_REG_MAX);
 796         regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_MASK_A,
 797                           &mask, DA7219_AAD_IRQ_REG_MAX);
 798
 799         return 0;
 800 }
 801 EXPORT_SYMBOL_GPL(da7219_aad_init);
 802
 803 void da7219_aad_exit(struct snd_soc_codec *codec)
 804 {
 805         struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
 806         struct da7219_aad_priv *da7219_aad = da7219->aad;
 807         u8 mask[DA7219_AAD_IRQ_REG_MAX];
 808
 809         /* Mask off AAD IRQs */
 810         memset(mask, DA7219_BYTE_MASK, DA7219_AAD_IRQ_REG_MAX);
 811         regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_MASK_A,
 812                           mask, DA7219_AAD_IRQ_REG_MAX);
 813
 814         free_irq(da7219_aad->irq, da7219_aad);
 815
 816         cancel_work_sync(&da7219_aad->btn_det_work);
 817         cancel_work_sync(&da7219_aad->hptest_work);
 818 }
 819 EXPORT_SYMBOL_GPL(da7219_aad_exit);
 820
 821 MODULE_DESCRIPTION("ASoC DA7219 AAD Driver");
 822 MODULE_AUTHOR("Adam Thomson <Adam.Thomson.Opensource@diasemi.com>");
 823 MODULE_LICENSE("GPL");