sound/soc/codecs/twl6040.c

   1 /*
   2  * ALSA SoC TWL6040 codec driver
   3  *
   4  * Author:       Misael Lopez Cruz <x0052729@ti.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * version 2 as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  18  * 02110-1301 USA
  19  *
  20  */
  21
  22 #include <linux/module.h>
  23 #include <linux/moduleparam.h>
  24 #include <linux/init.h>
  25 #include <linux/delay.h>
  26 #include <linux/pm.h>
  27 #include <linux/i2c.h>
  28 #include <linux/gpio.h>
  29 #include <linux/platform_device.h>
  30 #include <linux/slab.h>
  31 #include <linux/i2c/twl.h>
  32
  33 #include <sound/core.h>
  34 #include <sound/pcm.h>
  35 #include <sound/pcm_params.h>
  36 #include <sound/soc.h>
  37 #include <sound/initval.h>
  38 #include <sound/tlv.h>
  39
  40 #include "twl6040.h"
  41
  42 #define TWL6040_RATES    (SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
  43 #define TWL6040_FORMATS  (SNDRV_PCM_FMTBIT_S32_LE)
  44
  45 struct twl6040_jack_data {
  46         struct snd_soc_jack *jack;
  47         int report;
  48 };
  49
  50 /* codec private data */
  51 struct twl6040_data {
  52         int audpwron;
  53         int naudint;
  54         int codec_powered;
  55         int pll;
  56         int non_lp;
  57         unsigned int sysclk;
  58         struct snd_pcm_hw_constraint_list *sysclk_constraints;
  59         struct completion ready;
  60         struct twl6040_jack_data hs_jack;
  61         struct snd_soc_codec *codec;
  62         struct workqueue_struct *workqueue;
  63         struct delayed_work delayed_work;
  64         struct mutex mutex;
  65 };
  66
  67 /*
  68  * twl6040 register cache & default register settings
  69  */
  70 static const u8 twl6040_reg[TWL6040_CACHEREGNUM] = {
  71         0x00, /* not used               0x00    */
  72         0x4B, /* TWL6040_ASICID (ro)    0x01    */
  73         0x00, /* TWL6040_ASICREV (ro)   0x02    */
  74         0x00, /* TWL6040_INTID          0x03    */
  75         0x00, /* TWL6040_INTMR          0x04    */
  76         0x00, /* TWL6040_NCPCTRL        0x05    */
  77         0x00, /* TWL6040_LDOCTL         0x06    */
  78         0x60, /* TWL6040_HPPLLCTL       0x07    */
  79         0x00, /* TWL6040_LPPLLCTL       0x08    */
  80         0x4A, /* TWL6040_LPPLLDIV       0x09    */
  81         0x00, /* TWL6040_AMICBCTL       0x0A    */
  82         0x00, /* TWL6040_DMICBCTL       0x0B    */
  83         0x18, /* TWL6040_MICLCTL        0x0C    - No input selected on Left Mic */
  84         0x18, /* TWL6040_MICRCTL        0x0D    - No input selected on Right Mic */
  85         0x00, /* TWL6040_MICGAIN        0x0E    */
  86         0x1B, /* TWL6040_LINEGAIN       0x0F    */
  87         0x00, /* TWL6040_HSLCTL         0x10    */
  88         0x00, /* TWL6040_HSRCTL         0x11    */
  89         0x00, /* TWL6040_HSGAIN         0x12    */
  90         0x00, /* TWL6040_EARCTL         0x13    */
  91         0x00, /* TWL6040_HFLCTL         0x14    */
  92         0x00, /* TWL6040_HFLGAIN        0x15    */
  93         0x00, /* TWL6040_HFRCTL         0x16    */
  94         0x00, /* TWL6040_HFRGAIN        0x17    */
  95         0x00, /* TWL6040_VIBCTLL        0x18    */
  96         0x00, /* TWL6040_VIBDATL        0x19    */
  97         0x00, /* TWL6040_VIBCTLR        0x1A    */
  98         0x00, /* TWL6040_VIBDATR        0x1B    */
  99         0x00, /* TWL6040_HKCTL1         0x1C    */
 100         0x00, /* TWL6040_HKCTL2         0x1D    */
 101         0x00, /* TWL6040_GPOCTL         0x1E    */
 102         0x00, /* TWL6040_ALB            0x1F    */
 103         0x00, /* TWL6040_DLB            0x20    */
 104         0x00, /* not used               0x21    */
 105         0x00, /* not used               0x22    */
 106         0x00, /* not used               0x23    */
 107         0x00, /* not used               0x24    */
 108         0x00, /* not used               0x25    */
 109         0x00, /* not used               0x26    */
 110         0x00, /* not used               0x27    */
 111         0x00, /* TWL6040_TRIM1          0x28    */
 112         0x00, /* TWL6040_TRIM2          0x29    */
 113         0x00, /* TWL6040_TRIM3          0x2A    */
 114         0x00, /* TWL6040_HSOTRIM        0x2B    */
 115         0x00, /* TWL6040_HFOTRIM        0x2C    */
 116         0x09, /* TWL6040_ACCCTL         0x2D    */
 117         0x00, /* TWL6040_STATUS (ro)    0x2E    */
 118 };
 119
 120 /*
 121  * twl6040 vio/gnd registers:
 122  * registers under vio/gnd supply can be accessed
 123  * before the power-up sequence, after NRESPWRON goes high
 124  */
 125 static const int twl6040_vio_reg[TWL6040_VIOREGNUM] = {
 126         TWL6040_REG_ASICID,
 127         TWL6040_REG_ASICREV,
 128         TWL6040_REG_INTID,
 129         TWL6040_REG_INTMR,
 130         TWL6040_REG_NCPCTL,
 131         TWL6040_REG_LDOCTL,
 132         TWL6040_REG_AMICBCTL,
 133         TWL6040_REG_DMICBCTL,
 134         TWL6040_REG_HKCTL1,
 135         TWL6040_REG_HKCTL2,
 136         TWL6040_REG_GPOCTL,
 137         TWL6040_REG_TRIM1,
 138         TWL6040_REG_TRIM2,
 139         TWL6040_REG_TRIM3,
 140         TWL6040_REG_HSOTRIM,
 141         TWL6040_REG_HFOTRIM,
 142         TWL6040_REG_ACCCTL,
 143         TWL6040_REG_STATUS,
 144 };
 145
 146 /*
 147  * twl6040 vdd/vss registers:
 148  * registers under vdd/vss supplies can only be accessed
 149  * after the power-up sequence
 150  */
 151 static const int twl6040_vdd_reg[TWL6040_VDDREGNUM] = {
 152         TWL6040_REG_HPPLLCTL,
 153         TWL6040_REG_LPPLLCTL,
 154         TWL6040_REG_LPPLLDIV,
 155         TWL6040_REG_MICLCTL,
 156         TWL6040_REG_MICRCTL,
 157         TWL6040_REG_MICGAIN,
 158         TWL6040_REG_LINEGAIN,
 159         TWL6040_REG_HSLCTL,
 160         TWL6040_REG_HSRCTL,
 161         TWL6040_REG_HSGAIN,
 162         TWL6040_REG_EARCTL,
 163         TWL6040_REG_HFLCTL,
 164         TWL6040_REG_HFLGAIN,
 165         TWL6040_REG_HFRCTL,
 166         TWL6040_REG_HFRGAIN,
 167         TWL6040_REG_VIBCTLL,
 168         TWL6040_REG_VIBDATL,
 169         TWL6040_REG_VIBCTLR,
 170         TWL6040_REG_VIBDATR,
 171         TWL6040_REG_ALB,
 172         TWL6040_REG_DLB,
 173 };
 174
 175 /*
 176  * read twl6040 register cache
 177  */
 178 static inline unsigned int twl6040_read_reg_cache(struct snd_soc_codec *codec,
 179                                                 unsigned int reg)
 180 {
 181         u8 *cache = codec->reg_cache;
 182
 183         if (reg >= TWL6040_CACHEREGNUM)
 184                 return -EIO;
 185
 186         return cache[reg];
 187 }
 188
 189 /*
 190  * write twl6040 register cache
 191  */
 192 static inline void twl6040_write_reg_cache(struct snd_soc_codec *codec,
 193                                                 u8 reg, u8 value)
 194 {
 195         u8 *cache = codec->reg_cache;
 196
 197         if (reg >= TWL6040_CACHEREGNUM)
 198                 return;
 199         cache[reg] = value;
 200 }
 201
 202 /*
 203  * read from twl6040 hardware register
 204  */
 205 static int twl6040_read_reg_volatile(struct snd_soc_codec *codec,
 206                         unsigned int reg)
 207 {
 208         u8 value;
 209
 210         if (reg >= TWL6040_CACHEREGNUM)
 211                 return -EIO;
 212
 213         twl_i2c_read_u8(TWL_MODULE_AUDIO_VOICE, &value, reg);
 214         twl6040_write_reg_cache(codec, reg, value);
 215
 216         return value;
 217 }
 218
 219 /*
 220  * write to the twl6040 register space
 221  */
 222 static int twl6040_write(struct snd_soc_codec *codec,
 223                         unsigned int reg, unsigned int value)
 224 {
 225         if (reg >= TWL6040_CACHEREGNUM)
 226                 return -EIO;
 227
 228         twl6040_write_reg_cache(codec, reg, value);
 229         return twl_i2c_write_u8(TWL_MODULE_AUDIO_VOICE, value, reg);
 230 }
 231
 232 static void twl6040_init_vio_regs(struct snd_soc_codec *codec)
 233 {
 234         u8 *cache = codec->reg_cache;
 235         int reg, i;
 236
 237         /* allow registers to be accessed by i2c */
 238         twl6040_write(codec, TWL6040_REG_ACCCTL, cache[TWL6040_REG_ACCCTL]);
 239
 240         for (i = 0; i < TWL6040_VIOREGNUM; i++) {
 241                 reg = twl6040_vio_reg[i];
 242                 /* skip read-only registers (ASICID, ASICREV, STATUS) */
 243                 switch (reg) {
 244                 case TWL6040_REG_ASICID:
 245                 case TWL6040_REG_ASICREV:
 246                 case TWL6040_REG_STATUS:
 247                         continue;
 248                 default:
 249                         break;
 250                 }
 251                 twl6040_write(codec, reg, cache[reg]);
 252         }
 253 }
 254
 255 static void twl6040_init_vdd_regs(struct snd_soc_codec *codec)
 256 {
 257         u8 *cache = codec->reg_cache;
 258         int reg, i;
 259
 260         for (i = 0; i < TWL6040_VDDREGNUM; i++) {
 261                 reg = twl6040_vdd_reg[i];
 262                 twl6040_write(codec, reg, cache[reg]);
 263         }
 264 }
 265
 266 /* twl6040 codec manual power-up sequence */
 267 static void twl6040_power_up(struct snd_soc_codec *codec)
 268 {
 269         u8 ncpctl, ldoctl, lppllctl, accctl;
 270
 271         ncpctl = twl6040_read_reg_cache(codec, TWL6040_REG_NCPCTL);
 272         ldoctl = twl6040_read_reg_cache(codec, TWL6040_REG_LDOCTL);
 273         lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
 274         accctl = twl6040_read_reg_cache(codec, TWL6040_REG_ACCCTL);
 275
 276         /* enable reference system */
 277         ldoctl |= TWL6040_REFENA;
 278         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 279         msleep(10);
 280         /* enable internal oscillator */
 281         ldoctl |= TWL6040_OSCENA;
 282         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 283         udelay(10);
 284         /* enable high-side ldo */
 285         ldoctl |= TWL6040_HSLDOENA;
 286         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 287         udelay(244);
 288         /* enable negative charge pump */
 289         ncpctl |= TWL6040_NCPENA | TWL6040_NCPOPEN;
 290         twl6040_write(codec, TWL6040_REG_NCPCTL, ncpctl);
 291         udelay(488);
 292         /* enable low-side ldo */
 293         ldoctl |= TWL6040_LSLDOENA;
 294         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 295         udelay(244);
 296         /* enable low-power pll */
 297         lppllctl |= TWL6040_LPLLENA;
 298         twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 299         /* reset state machine */
 300         accctl |= TWL6040_RESETSPLIT;
 301         twl6040_write(codec, TWL6040_REG_ACCCTL, accctl);
 302         mdelay(5);
 303         accctl &= ~TWL6040_RESETSPLIT;
 304         twl6040_write(codec, TWL6040_REG_ACCCTL, accctl);
 305         /* disable internal oscillator */
 306         ldoctl &= ~TWL6040_OSCENA;
 307         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 308 }
 309
 310 /* twl6040 codec manual power-down sequence */
 311 static void twl6040_power_down(struct snd_soc_codec *codec)
 312 {
 313         u8 ncpctl, ldoctl, lppllctl, accctl;
 314
 315         ncpctl = twl6040_read_reg_cache(codec, TWL6040_REG_NCPCTL);
 316         ldoctl = twl6040_read_reg_cache(codec, TWL6040_REG_LDOCTL);
 317         lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
 318         accctl = twl6040_read_reg_cache(codec, TWL6040_REG_ACCCTL);
 319
 320         /* enable internal oscillator */
 321         ldoctl |= TWL6040_OSCENA;
 322         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 323         udelay(10);
 324         /* disable low-power pll */
 325         lppllctl &= ~TWL6040_LPLLENA;
 326         twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 327         /* disable low-side ldo */
 328         ldoctl &= ~TWL6040_LSLDOENA;
 329         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 330         udelay(244);
 331         /* disable negative charge pump */
 332         ncpctl &= ~(TWL6040_NCPENA | TWL6040_NCPOPEN);
 333         twl6040_write(codec, TWL6040_REG_NCPCTL, ncpctl);
 334         udelay(488);
 335         /* disable high-side ldo */
 336         ldoctl &= ~TWL6040_HSLDOENA;
 337         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 338         udelay(244);
 339         /* disable internal oscillator */
 340         ldoctl &= ~TWL6040_OSCENA;
 341         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 342         /* disable reference system */
 343         ldoctl &= ~TWL6040_REFENA;
 344         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 345         msleep(10);
 346 }
 347
 348 /* set headset dac and driver power mode */
 349 static int headset_power_mode(struct snd_soc_codec *codec, int high_perf)
 350 {
 351         int hslctl, hsrctl;
 352         int mask = TWL6040_HSDRVMODEL | TWL6040_HSDACMODEL;
 353
 354         hslctl = twl6040_read_reg_cache(codec, TWL6040_REG_HSLCTL);
 355         hsrctl = twl6040_read_reg_cache(codec, TWL6040_REG_HSRCTL);
 356
 357         if (high_perf) {
 358                 hslctl &= ~mask;
 359                 hsrctl &= ~mask;
 360         } else {
 361                 hslctl |= mask;
 362                 hsrctl |= mask;
 363         }
 364
 365         twl6040_write(codec, TWL6040_REG_HSLCTL, hslctl);
 366         twl6040_write(codec, TWL6040_REG_HSRCTL, hsrctl);
 367
 368         return 0;
 369 }
 370
 371 static int twl6040_hs_dac_event(struct snd_soc_dapm_widget *w,
 372                         struct snd_kcontrol *kcontrol, int event)
 373 {
 374         msleep(1);
 375         return 0;
 376 }
 377
 378 static int twl6040_power_mode_event(struct snd_soc_dapm_widget *w,
 379                         struct snd_kcontrol *kcontrol, int event)
 380 {
 381         struct snd_soc_codec *codec = w->codec;
 382         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 383
 384         if (SND_SOC_DAPM_EVENT_ON(event))
 385                 priv->non_lp++;
 386         else
 387                 priv->non_lp--;
 388
 389         msleep(1);
 390
 391         return 0;
 392 }
 393
 394 void twl6040_hs_jack_report(struct snd_soc_codec *codec,
 395                                 struct snd_soc_jack *jack, int report)
 396 {
 397         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 398         int status;
 399
 400         mutex_lock(&priv->mutex);
 401
 402         /* Sync status */
 403         status = twl6040_read_reg_volatile(codec, TWL6040_REG_STATUS);
 404         if (status & TWL6040_PLUGCOMP)
 405                 snd_soc_jack_report(jack, report, report);
 406         else
 407                 snd_soc_jack_report(jack, 0, report);
 408
 409         mutex_unlock(&priv->mutex);
 410 }
 411
 412 void twl6040_hs_jack_detect(struct snd_soc_codec *codec,
 413                                 struct snd_soc_jack *jack, int report)
 414 {
 415         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 416         struct twl6040_jack_data *hs_jack = &priv->hs_jack;
 417
 418         hs_jack->jack = jack;
 419         hs_jack->report = report;
 420
 421         twl6040_hs_jack_report(codec, hs_jack->jack, hs_jack->report);
 422 }
 423 EXPORT_SYMBOL_GPL(twl6040_hs_jack_detect);
 424
 425 static void twl6040_accessory_work(struct work_struct *work)
 426 {
 427         struct twl6040_data *priv = container_of(work,
 428                                         struct twl6040_data, delayed_work.work);
 429         struct snd_soc_codec *codec = priv->codec;
 430         struct twl6040_jack_data *hs_jack = &priv->hs_jack;
 431
 432         twl6040_hs_jack_report(codec, hs_jack->jack, hs_jack->report);
 433 }
 434
 435 /* audio interrupt handler */
 436 static irqreturn_t twl6040_naudint_handler(int irq, void *data)
 437 {
 438         struct snd_soc_codec *codec = data;
 439         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 440         u8 intid;
 441
 442         twl_i2c_read_u8(TWL_MODULE_AUDIO_VOICE, &intid, TWL6040_REG_INTID);
 443
 444         if (intid & TWL6040_THINT)
 445                 dev_alert(codec->dev, "die temp over-limit detection\n");
 446
 447         if ((intid & TWL6040_PLUGINT) || (intid & TWL6040_UNPLUGINT))
 448                 queue_delayed_work(priv->workqueue, &priv->delayed_work,
 449                                                         msecs_to_jiffies(200));
 450
 451         if (intid & TWL6040_HOOKINT)
 452                 dev_info(codec->dev, "hook detection\n");
 453
 454         if (intid & TWL6040_HFINT)
 455                 dev_alert(codec->dev, "hf drivers over current detection\n");
 456
 457         if (intid & TWL6040_VIBINT)
 458                 dev_alert(codec->dev, "vib drivers over current detection\n");
 459
 460         if (intid & TWL6040_READYINT)
 461                 complete(&priv->ready);
 462
 463         return IRQ_HANDLED;
 464 }
 465
 466 /*
 467  * MICATT volume control:
 468  * from -6 to 0 dB in 6 dB steps
 469  */
 470 static DECLARE_TLV_DB_SCALE(mic_preamp_tlv, -600, 600, 0);
 471
 472 /*
 473  * MICGAIN volume control:
 474  * from 6 to 30 dB in 6 dB steps
 475  */
 476 static DECLARE_TLV_DB_SCALE(mic_amp_tlv, 600, 600, 0);
 477
 478 /*
 479  * AFMGAIN volume control:
 480  * from 18 to 24 dB in 6 dB steps
 481  */
 482 static DECLARE_TLV_DB_SCALE(afm_amp_tlv, 1800, 600, 0);
 483
 484 /*
 485  * HSGAIN volume control:
 486  * from -30 to 0 dB in 2 dB steps
 487  */
 488 static DECLARE_TLV_DB_SCALE(hs_tlv, -3000, 200, 0);
 489
 490 /*
 491  * HFGAIN volume control:
 492  * from -52 to 6 dB in 2 dB steps
 493  */
 494 static DECLARE_TLV_DB_SCALE(hf_tlv, -5200, 200, 0);
 495
 496 /*
 497  * EPGAIN volume control:
 498  * from -24 to 6 dB in 2 dB steps
 499  */
 500 static DECLARE_TLV_DB_SCALE(ep_tlv, -2400, 200, 0);
 501
 502 /* Left analog microphone selection */
 503 static const char *twl6040_amicl_texts[] =
 504         {"Headset Mic", "Main Mic", "Aux/FM Left", "Off"};
 505
 506 /* Right analog microphone selection */
 507 static const char *twl6040_amicr_texts[] =
 508         {"Headset Mic", "Sub Mic", "Aux/FM Right", "Off"};
 509
 510 static const struct soc_enum twl6040_enum[] = {
 511         SOC_ENUM_SINGLE(TWL6040_REG_MICLCTL, 3, 3, twl6040_amicl_texts),
 512         SOC_ENUM_SINGLE(TWL6040_REG_MICRCTL, 3, 3, twl6040_amicr_texts),
 513 };
 514
 515 static const char *twl6040_hs_texts[] = {
 516         "Off", "HS DAC", "Line-In amp"
 517 };
 518
 519 static const struct soc_enum twl6040_hs_enum[] = {
 520         SOC_ENUM_SINGLE(TWL6040_REG_HSLCTL, 5, ARRAY_SIZE(twl6040_hs_texts),
 521                         twl6040_hs_texts),
 522         SOC_ENUM_SINGLE(TWL6040_REG_HSRCTL, 5, ARRAY_SIZE(twl6040_hs_texts),
 523                         twl6040_hs_texts),
 524 };
 525
 526 static const char *twl6040_hf_texts[] = {
 527         "Off", "HF DAC", "Line-In amp"
 528 };
 529
 530 static const struct soc_enum twl6040_hf_enum[] = {
 531         SOC_ENUM_SINGLE(TWL6040_REG_HFLCTL, 2, ARRAY_SIZE(twl6040_hf_texts),
 532                         twl6040_hf_texts),
 533         SOC_ENUM_SINGLE(TWL6040_REG_HFRCTL, 2, ARRAY_SIZE(twl6040_hf_texts),
 534                         twl6040_hf_texts),
 535 };
 536
 537 static const struct snd_kcontrol_new amicl_control =
 538         SOC_DAPM_ENUM("Route", twl6040_enum[0]);
 539
 540 static const struct snd_kcontrol_new amicr_control =
 541         SOC_DAPM_ENUM("Route", twl6040_enum[1]);
 542
 543 /* Headset DAC playback switches */
 544 static const struct snd_kcontrol_new hsl_mux_controls =
 545         SOC_DAPM_ENUM("Route", twl6040_hs_enum[0]);
 546
 547 static const struct snd_kcontrol_new hsr_mux_controls =
 548         SOC_DAPM_ENUM("Route", twl6040_hs_enum[1]);
 549
 550 /* Handsfree DAC playback switches */
 551 static const struct snd_kcontrol_new hfl_mux_controls =
 552         SOC_DAPM_ENUM("Route", twl6040_hf_enum[0]);
 553
 554 static const struct snd_kcontrol_new hfr_mux_controls =
 555         SOC_DAPM_ENUM("Route", twl6040_hf_enum[1]);
 556
 557 static const struct snd_kcontrol_new ep_driver_switch_controls =
 558         SOC_DAPM_SINGLE("Switch", TWL6040_REG_EARCTL, 0, 1, 0);
 559
 560 static const struct snd_kcontrol_new twl6040_snd_controls[] = {
 561         /* Capture gains */
 562         SOC_DOUBLE_TLV("Capture Preamplifier Volume",
 563                 TWL6040_REG_MICGAIN, 6, 7, 1, 1, mic_preamp_tlv),
 564         SOC_DOUBLE_TLV("Capture Volume",
 565                 TWL6040_REG_MICGAIN, 0, 3, 4, 0, mic_amp_tlv),
 566
 567         /* AFM gains */
 568         SOC_DOUBLE_TLV("Aux FM Volume",
 569                 TWL6040_REG_LINEGAIN, 0, 5, 0xF, 0, afm_amp_tlv),
 570
 571         /* Playback gains */
 572         SOC_DOUBLE_TLV("Headset Playback Volume",
 573                 TWL6040_REG_HSGAIN, 0, 4, 0xF, 1, hs_tlv),
 574         SOC_DOUBLE_R_TLV("Handsfree Playback Volume",
 575                 TWL6040_REG_HFLGAIN, TWL6040_REG_HFRGAIN, 0, 0x1D, 1, hf_tlv),
 576         SOC_SINGLE_TLV("Earphone Playback Volume",
 577                 TWL6040_REG_EARCTL, 1, 0xF, 1, ep_tlv),
 578 };
 579
 580 static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = {
 581         /* Inputs */
 582         SND_SOC_DAPM_INPUT("MAINMIC"),
 583         SND_SOC_DAPM_INPUT("HSMIC"),
 584         SND_SOC_DAPM_INPUT("SUBMIC"),
 585         SND_SOC_DAPM_INPUT("AFML"),
 586         SND_SOC_DAPM_INPUT("AFMR"),
 587
 588         /* Outputs */
 589         SND_SOC_DAPM_OUTPUT("HSOL"),
 590         SND_SOC_DAPM_OUTPUT("HSOR"),
 591         SND_SOC_DAPM_OUTPUT("HFL"),
 592         SND_SOC_DAPM_OUTPUT("HFR"),
 593         SND_SOC_DAPM_OUTPUT("EP"),
 594
 595         /* Analog input muxes for the capture amplifiers */
 596         SND_SOC_DAPM_MUX("Analog Left Capture Route",
 597                         SND_SOC_NOPM, 0, 0, &amicl_control),
 598         SND_SOC_DAPM_MUX("Analog Right Capture Route",
 599                         SND_SOC_NOPM, 0, 0, &amicr_control),
 600
 601         /* Analog capture PGAs */
 602         SND_SOC_DAPM_PGA("MicAmpL",
 603                         TWL6040_REG_MICLCTL, 0, 0, NULL, 0),
 604         SND_SOC_DAPM_PGA("MicAmpR",
 605                         TWL6040_REG_MICRCTL, 0, 0, NULL, 0),
 606
 607         /* Auxiliary FM PGAs */
 608         SND_SOC_DAPM_PGA("AFMAmpL",
 609                         TWL6040_REG_MICLCTL, 1, 0, NULL, 0),
 610         SND_SOC_DAPM_PGA("AFMAmpR",
 611                         TWL6040_REG_MICRCTL, 1, 0, NULL, 0),
 612
 613         /* ADCs */
 614         SND_SOC_DAPM_ADC("ADC Left", "Left Front Capture",
 615                         TWL6040_REG_MICLCTL, 2, 0),
 616         SND_SOC_DAPM_ADC("ADC Right", "Right Front Capture",
 617                         TWL6040_REG_MICRCTL, 2, 0),
 618
 619         /* Microphone bias */
 620         SND_SOC_DAPM_MICBIAS("Headset Mic Bias",
 621                         TWL6040_REG_AMICBCTL, 0, 0),
 622         SND_SOC_DAPM_MICBIAS("Main Mic Bias",
 623                         TWL6040_REG_AMICBCTL, 4, 0),
 624         SND_SOC_DAPM_MICBIAS("Digital Mic1 Bias",
 625                         TWL6040_REG_DMICBCTL, 0, 0),
 626         SND_SOC_DAPM_MICBIAS("Digital Mic2 Bias",
 627                         TWL6040_REG_DMICBCTL, 4, 0),
 628
 629         /* DACs */
 630         SND_SOC_DAPM_DAC_E("HSDAC Left", "Headset Playback",
 631                         TWL6040_REG_HSLCTL, 0, 0,
 632                         twl6040_hs_dac_event,
 633                         SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
 634         SND_SOC_DAPM_DAC_E("HSDAC Right", "Headset Playback",
 635                         TWL6040_REG_HSRCTL, 0, 0,
 636                         twl6040_hs_dac_event,
 637                         SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
 638         SND_SOC_DAPM_DAC_E("HFDAC Left", "Handsfree Playback",
 639                         TWL6040_REG_HFLCTL, 0, 0,
 640                         twl6040_power_mode_event,
 641                         SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
 642         SND_SOC_DAPM_DAC_E("HFDAC Right", "Handsfree Playback",
 643                         TWL6040_REG_HFRCTL, 0, 0,
 644                         twl6040_power_mode_event,
 645                         SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
 646
 647         SND_SOC_DAPM_MUX("HF Left Playback",
 648                         SND_SOC_NOPM, 0, 0, &hfl_mux_controls),
 649         SND_SOC_DAPM_MUX("HF Right Playback",
 650                         SND_SOC_NOPM, 0, 0, &hfr_mux_controls),
 651         /* Analog playback Muxes */
 652         SND_SOC_DAPM_MUX("HS Left Playback",
 653                         SND_SOC_NOPM, 0, 0, &hsl_mux_controls),
 654         SND_SOC_DAPM_MUX("HS Right Playback",
 655                         SND_SOC_NOPM, 0, 0, &hsr_mux_controls),
 656
 657         /* Analog playback drivers */
 658         SND_SOC_DAPM_PGA_E("Handsfree Left Driver",
 659                         TWL6040_REG_HFLCTL, 4, 0, NULL, 0,
 660                         twl6040_power_mode_event,
 661                         SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
 662         SND_SOC_DAPM_PGA_E("Handsfree Right Driver",
 663                         TWL6040_REG_HFRCTL, 4, 0, NULL, 0,
 664                         twl6040_power_mode_event,
 665                         SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
 666         SND_SOC_DAPM_PGA("Headset Left Driver",
 667                         TWL6040_REG_HSLCTL, 2, 0, NULL, 0),
 668         SND_SOC_DAPM_PGA("Headset Right Driver",
 669                         TWL6040_REG_HSRCTL, 2, 0, NULL, 0),
 670         SND_SOC_DAPM_SWITCH_E("Earphone Driver",
 671                         SND_SOC_NOPM, 0, 0, &ep_driver_switch_controls,
 672                         twl6040_power_mode_event,
 673                         SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
 674
 675         /* Analog playback PGAs */
 676         SND_SOC_DAPM_PGA("HFDAC Left PGA",
 677                         TWL6040_REG_HFLCTL, 1, 0, NULL, 0),
 678         SND_SOC_DAPM_PGA("HFDAC Right PGA",
 679                         TWL6040_REG_HFRCTL, 1, 0, NULL, 0),
 680
 681 };
 682
 683 static const struct snd_soc_dapm_route intercon[] = {
 684         /* Capture path */
 685         {"Analog Left Capture Route", "Headset Mic", "HSMIC"},
 686         {"Analog Left Capture Route", "Main Mic", "MAINMIC"},
 687         {"Analog Left Capture Route", "Aux/FM Left", "AFML"},
 688
 689         {"Analog Right Capture Route", "Headset Mic", "HSMIC"},
 690         {"Analog Right Capture Route", "Sub Mic", "SUBMIC"},
 691         {"Analog Right Capture Route", "Aux/FM Right", "AFMR"},
 692
 693         {"MicAmpL", NULL, "Analog Left Capture Route"},
 694         {"MicAmpR", NULL, "Analog Right Capture Route"},
 695
 696         {"ADC Left", NULL, "MicAmpL"},
 697         {"ADC Right", NULL, "MicAmpR"},
 698
 699         /* AFM path */
 700         {"AFMAmpL", "NULL", "AFML"},
 701         {"AFMAmpR", "NULL", "AFMR"},
 702
 703         {"HS Left Playback", "HS DAC", "HSDAC Left"},
 704         {"HS Left Playback", "Line-In amp", "AFMAmpL"},
 705
 706         {"HS Right Playback", "HS DAC", "HSDAC Right"},
 707         {"HS Right Playback", "Line-In amp", "AFMAmpR"},
 708
 709         {"Headset Left Driver", "NULL", "HS Left Playback"},
 710         {"Headset Right Driver", "NULL", "HS Right Playback"},
 711
 712         {"HSOL", NULL, "Headset Left Driver"},
 713         {"HSOR", NULL, "Headset Right Driver"},
 714
 715         /* Earphone playback path */
 716         {"Earphone Driver", "Switch", "HSDAC Left"},
 717         {"EP", NULL, "Earphone Driver"},
 718
 719         {"HF Left Playback", "HF DAC", "HFDAC Left"},
 720         {"HF Left Playback", "Line-In amp", "AFMAmpL"},
 721
 722         {"HF Right Playback", "HF DAC", "HFDAC Right"},
 723         {"HF Right Playback", "Line-In amp", "AFMAmpR"},
 724
 725         {"HFDAC Left PGA", NULL, "HF Left Playback"},
 726         {"HFDAC Right PGA", NULL, "HF Right Playback"},
 727
 728         {"Handsfree Left Driver", "Switch", "HFDAC Left PGA"},
 729         {"Handsfree Right Driver", "Switch", "HFDAC Right PGA"},
 730
 731         {"HFL", NULL, "Handsfree Left Driver"},
 732         {"HFR", NULL, "Handsfree Right Driver"},
 733 };
 734
 735 static int twl6040_add_widgets(struct snd_soc_codec *codec)
 736 {
 737         struct snd_soc_dapm_context *dapm = &codec->dapm;
 738
 739         snd_soc_dapm_new_controls(dapm, twl6040_dapm_widgets,
 740                                  ARRAY_SIZE(twl6040_dapm_widgets));
 741         snd_soc_dapm_add_routes(dapm, intercon, ARRAY_SIZE(intercon));
 742         snd_soc_dapm_new_widgets(dapm);
 743
 744         return 0;
 745 }
 746
 747 static int twl6040_power_up_completion(struct snd_soc_codec *codec,
 748                                         int naudint)
 749 {
 750         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 751         int time_left;
 752         u8 intid;
 753
 754         time_left = wait_for_completion_timeout(&priv->ready,
 755                                 msecs_to_jiffies(48));
 756
 757         if (!time_left) {
 758                 twl_i2c_read_u8(TWL_MODULE_AUDIO_VOICE, &intid,
 759                                                         TWL6040_REG_INTID);
 760                 if (!(intid & TWL6040_READYINT)) {
 761                         dev_err(codec->dev, "timeout waiting for READYINT\n");
 762                         return -ETIMEDOUT;
 763                 }
 764         }
 765
 766         priv->codec_powered = 1;
 767
 768         return 0;
 769 }
 770
 771 static int twl6040_set_bias_level(struct snd_soc_codec *codec,
 772                                 enum snd_soc_bias_level level)
 773 {
 774         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 775         int audpwron = priv->audpwron;
 776         int naudint = priv->naudint;
 777         int ret;
 778
 779         switch (level) {
 780         case SND_SOC_BIAS_ON:
 781                 break;
 782         case SND_SOC_BIAS_PREPARE:
 783                 break;
 784         case SND_SOC_BIAS_STANDBY:
 785                 if (priv->codec_powered)
 786                         break;
 787
 788                 if (gpio_is_valid(audpwron)) {
 789                         /* use AUDPWRON line */
 790                         gpio_set_value(audpwron, 1);
 791
 792                         /* wait for power-up completion */
 793                         ret = twl6040_power_up_completion(codec, naudint);
 794                         if (ret)
 795                                 return ret;
 796
 797                         /* sync registers updated during power-up sequence */
 798                         twl6040_read_reg_volatile(codec, TWL6040_REG_NCPCTL);
 799                         twl6040_read_reg_volatile(codec, TWL6040_REG_LDOCTL);
 800                         twl6040_read_reg_volatile(codec, TWL6040_REG_LPPLLCTL);
 801                 } else {
 802                         /* use manual power-up sequence */
 803                         twl6040_power_up(codec);
 804                         priv->codec_powered = 1;
 805                 }
 806
 807                 /* initialize vdd/vss registers with reg_cache */
 808                 twl6040_init_vdd_regs(codec);
 809                 break;
 810         case SND_SOC_BIAS_OFF:
 811                 if (!priv->codec_powered)
 812                         break;
 813
 814                 if (gpio_is_valid(audpwron)) {
 815                         /* use AUDPWRON line */
 816                         gpio_set_value(audpwron, 0);
 817
 818                         /* power-down sequence latency */
 819                         udelay(500);
 820
 821                         /* sync registers updated during power-down sequence */
 822                         twl6040_read_reg_volatile(codec, TWL6040_REG_NCPCTL);
 823                         twl6040_read_reg_volatile(codec, TWL6040_REG_LDOCTL);
 824                         twl6040_write_reg_cache(codec, TWL6040_REG_LPPLLCTL,
 825                                                 0x00);
 826                 } else {
 827                         /* use manual power-down sequence */
 828                         twl6040_power_down(codec);
 829                 }
 830
 831                 priv->codec_powered = 0;
 832                 break;
 833         }
 834
 835         codec->dapm.bias_level = level;
 836
 837         return 0;
 838 }
 839
 840 /* set of rates for each pll: low-power and high-performance */
 841
 842 static unsigned int lp_rates[] = {
 843         88200,
 844         96000,
 845 };
 846
 847 static struct snd_pcm_hw_constraint_list lp_constraints = {
 848         .count  = ARRAY_SIZE(lp_rates),
 849         .list   = lp_rates,
 850 };
 851
 852 static unsigned int hp_rates[] = {
 853         96000,
 854 };
 855
 856 static struct snd_pcm_hw_constraint_list hp_constraints = {
 857         .count  = ARRAY_SIZE(hp_rates),
 858         .list   = hp_rates,
 859 };
 860
 861 static int twl6040_startup(struct snd_pcm_substream *substream,
 862                         struct snd_soc_dai *dai)
 863 {
 864         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 865         struct snd_soc_codec *codec = rtd->codec;
 866         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 867
 868         if (!priv->sysclk) {
 869                 dev_err(codec->dev,
 870                         "no mclk configured, call set_sysclk() on init\n");
 871                 return -EINVAL;
 872         }
 873
 874         /*
 875          * capture is not supported at 17.64 MHz,
 876          * it's reserved for headset low-power playback scenario
 877          */
 878         if ((priv->sysclk == 17640000) && substream->stream) {
 879                 dev_err(codec->dev,
 880                         "capture mode is not supported at %dHz\n",
 881                         priv->sysclk);
 882                 return -EINVAL;
 883         }
 884
 885         snd_pcm_hw_constraint_list(substream->runtime, 0,
 886                                 SNDRV_PCM_HW_PARAM_RATE,
 887                                 priv->sysclk_constraints);
 888
 889         return 0;
 890 }
 891
 892 static int twl6040_hw_params(struct snd_pcm_substream *substream,
 893                         struct snd_pcm_hw_params *params,
 894                         struct snd_soc_dai *dai)
 895 {
 896         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 897         struct snd_soc_codec *codec = rtd->codec;
 898         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 899         u8 lppllctl;
 900         int rate;
 901
 902         /* nothing to do for high-perf pll, it supports only 48 kHz */
 903         if (priv->pll == TWL6040_HPPLL_ID)
 904                 return 0;
 905
 906         lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
 907
 908         rate = params_rate(params);
 909         switch (rate) {
 910         case 88200:
 911                 lppllctl |= TWL6040_LPLLFIN;
 912                 priv->sysclk = 17640000;
 913                 break;
 914         case 96000:
 915                 lppllctl &= ~TWL6040_LPLLFIN;
 916                 priv->sysclk = 19200000;
 917                 break;
 918         default:
 919                 dev_err(codec->dev, "unsupported rate %d\n", rate);
 920                 return -EINVAL;
 921         }
 922
 923         twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 924
 925         return 0;
 926 }
 927
 928 static int twl6040_trigger(struct snd_pcm_substream *substream,
 929                         int cmd, struct snd_soc_dai *dai)
 930 {
 931         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 932         struct snd_soc_codec *codec = rtd->codec;
 933         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 934
 935         switch (cmd) {
 936         case SNDRV_PCM_TRIGGER_START:
 937         case SNDRV_PCM_TRIGGER_RESUME:
 938                 /*
 939                  * low-power playback mode is restricted
 940                  * for headset path only
 941                  */
 942                 if ((priv->sysclk == 17640000) && priv->non_lp) {
 943                         dev_err(codec->dev,
 944                                 "some enabled paths aren't supported at %dHz\n",
 945                                 priv->sysclk);
 946                         return -EPERM;
 947                 }
 948                 break;
 949         default:
 950                 break;
 951         }
 952
 953         return 0;
 954 }
 955
 956 static int twl6040_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 957                 int clk_id, unsigned int freq, int dir)
 958 {
 959         struct snd_soc_codec *codec = codec_dai->codec;
 960         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 961         u8 hppllctl, lppllctl;
 962
 963         hppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_HPPLLCTL);
 964         lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
 965
 966         switch (clk_id) {
 967         case TWL6040_SYSCLK_SEL_LPPLL:
 968                 switch (freq) {
 969                 case 32768:
 970                         /* headset dac and driver must be in low-power mode */
 971                         headset_power_mode(codec, 0);
 972
 973                         /* clk32k input requires low-power pll */
 974                         lppllctl |= TWL6040_LPLLENA;
 975                         twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 976                         mdelay(5);
 977                         lppllctl &= ~TWL6040_HPLLSEL;
 978                         twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 979                         hppllctl &= ~TWL6040_HPLLENA;
 980                         twl6040_write(codec, TWL6040_REG_HPPLLCTL, hppllctl);
 981                         break;
 982                 default:
 983                         dev_err(codec->dev, "unknown mclk freq %d\n", freq);
 984                         return -EINVAL;
 985                 }
 986
 987                 /* lppll divider */
 988                 switch (priv->sysclk) {
 989                 case 17640000:
 990                         lppllctl |= TWL6040_LPLLFIN;
 991                         break;
 992                 case 19200000:
 993                         lppllctl &= ~TWL6040_LPLLFIN;
 994                         break;
 995                 default:
 996                         /* sysclk not yet configured */
 997                         lppllctl &= ~TWL6040_LPLLFIN;
 998                         priv->sysclk = 19200000;
 999                         break;
1000                 }
1001
1002                 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
1003
1004                 priv->pll = TWL6040_LPPLL_ID;
1005                 priv->sysclk_constraints = &lp_constraints;
1006                 break;
1007         case TWL6040_SYSCLK_SEL_HPPLL:
1008                 hppllctl &= ~TWL6040_MCLK_MSK;
1009
1010                 switch (freq) {
1011                 case 12000000:
1012                         /* mclk input, pll enabled */
1013                         hppllctl |= TWL6040_MCLK_12000KHZ |
1014                                     TWL6040_HPLLSQRBP |
1015                                     TWL6040_HPLLENA;
1016                         break;
1017                 case 19200000:
1018                         /* mclk input, pll disabled */
1019                         hppllctl |= TWL6040_MCLK_19200KHZ |
1020                                     TWL6040_HPLLSQRENA |
1021                                     TWL6040_HPLLBP;
1022                         break;
1023                 case 26000000:
1024                         /* mclk input, pll enabled */
1025                         hppllctl |= TWL6040_MCLK_26000KHZ |
1026                                     TWL6040_HPLLSQRBP |
1027                                     TWL6040_HPLLENA;
1028                         break;
1029                 case 38400000:
1030                         /* clk slicer, pll disabled */
1031                         hppllctl |= TWL6040_MCLK_38400KHZ |
1032                                     TWL6040_HPLLSQRENA |
1033                                     TWL6040_HPLLBP;
1034                         break;
1035                 default:
1036                         dev_err(codec->dev, "unknown mclk freq %d\n", freq);
1037                         return -EINVAL;
1038                 }
1039
1040                 /* headset dac and driver must be in high-performance mode */
1041                 headset_power_mode(codec, 1);
1042
1043                 twl6040_write(codec, TWL6040_REG_HPPLLCTL, hppllctl);
1044                 udelay(500);
1045                 lppllctl |= TWL6040_HPLLSEL;
1046                 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
1047                 lppllctl &= ~TWL6040_LPLLENA;
1048                 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
1049
1050                 /* high-performance pll can provide only 19.2 MHz */
1051                 priv->pll = TWL6040_HPPLL_ID;
1052                 priv->sysclk = 19200000;
1053                 priv->sysclk_constraints = &hp_constraints;
1054                 break;
1055         default:
1056                 dev_err(codec->dev, "unknown clk_id %d\n", clk_id);
1057                 return -EINVAL;
1058         }
1059
1060         return 0;
1061 }
1062
1063 static struct snd_soc_dai_ops twl6040_dai_ops = {
1064         .startup        = twl6040_startup,
1065         .hw_params      = twl6040_hw_params,
1066         .trigger        = twl6040_trigger,
1067         .set_sysclk     = twl6040_set_dai_sysclk,
1068 };
1069
1070 static struct snd_soc_dai_driver twl6040_dai = {
1071         .name = "twl6040-hifi",
1072         .playback = {
1073                 .stream_name = "Playback",
1074                 .channels_min = 1,
1075                 .channels_max = 4,
1076                 .rates = TWL6040_RATES,
1077                 .formats = TWL6040_FORMATS,
1078         },
1079         .capture = {
1080                 .stream_name = "Capture",
1081                 .channels_min = 1,
1082                 .channels_max = 2,
1083                 .rates = TWL6040_RATES,
1084                 .formats = TWL6040_FORMATS,
1085         },
1086         .ops = &twl6040_dai_ops,
1087 };
1088
1089 #ifdef CONFIG_PM
1090 static int twl6040_suspend(struct snd_soc_codec *codec, pm_message_t state)
1091 {
1092         twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
1093
1094         return 0;
1095 }
1096
1097 static int twl6040_resume(struct snd_soc_codec *codec)
1098 {
1099         twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1100
1101         return 0;
1102 }
1103 #else
1104 #define twl6040_suspend NULL
1105 #define twl6040_resume NULL
1106 #endif
1107
1108 static int twl6040_probe(struct snd_soc_codec *codec)
1109 {
1110         struct twl4030_codec_data *twl_codec = codec->dev->platform_data;
1111         struct twl6040_data *priv;
1112         int audpwron, naudint;
1113         int ret = 0;
1114
1115         priv = kzalloc(sizeof(struct twl6040_data), GFP_KERNEL);
1116         if (priv == NULL)
1117                 return -ENOMEM;
1118         snd_soc_codec_set_drvdata(codec, priv);
1119
1120         priv->codec = codec;
1121
1122         if (twl_codec) {
1123                 audpwron = twl_codec->audpwron_gpio;
1124                 naudint = twl_codec->naudint_irq;
1125         } else {
1126                 audpwron = -EINVAL;
1127                 naudint = 0;
1128         }
1129
1130         priv->audpwron = audpwron;
1131         priv->naudint = naudint;
1132         priv->workqueue = create_singlethread_workqueue("twl6040-codec");
1133
1134         if (!priv->workqueue)
1135                 goto work_err;
1136
1137         INIT_DELAYED_WORK(&priv->delayed_work, twl6040_accessory_work);
1138
1139         mutex_init(&priv->mutex);
1140
1141         init_completion(&priv->ready);
1142
1143         if (gpio_is_valid(audpwron)) {
1144                 ret = gpio_request(audpwron, "audpwron");
1145                 if (ret)
1146                         goto gpio1_err;
1147
1148                 ret = gpio_direction_output(audpwron, 0);
1149                 if (ret)
1150                         goto gpio2_err;
1151
1152                 priv->codec_powered = 0;
1153         }
1154
1155         if (naudint) {
1156                 /* audio interrupt */
1157                 ret = request_threaded_irq(naudint, NULL,
1158                                 twl6040_naudint_handler,
1159                                 IRQF_TRIGGER_LOW | IRQF_ONESHOT,
1160                                 "twl6040_codec", codec);
1161                 if (ret)
1162                         goto gpio2_err;
1163         } else {
1164                 if (gpio_is_valid(audpwron)) {
1165                         /* enable only codec ready interrupt */
1166                         twl6040_write_reg_cache(codec, TWL6040_REG_INTMR,
1167                                         ~TWL6040_READYMSK & TWL6040_ALLINT_MSK);
1168                 } else {
1169                         /* no interrupts at all */
1170                         twl6040_write_reg_cache(codec, TWL6040_REG_INTMR,
1171                                                 TWL6040_ALLINT_MSK);
1172                 }
1173         }
1174
1175         /* init vio registers */
1176         twl6040_init_vio_regs(codec);
1177
1178         /* power on device */
1179         ret = twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1180         if (ret)
1181                 goto irq_err;
1182
1183         snd_soc_add_controls(codec, twl6040_snd_controls,
1184                                 ARRAY_SIZE(twl6040_snd_controls));
1185         twl6040_add_widgets(codec);
1186
1187         return 0;
1188
1189 irq_err:
1190         if (naudint)
1191                 free_irq(naudint, codec);
1192 gpio2_err:
1193         if (gpio_is_valid(audpwron))
1194                 gpio_free(audpwron);
1195 gpio1_err:
1196         destroy_workqueue(priv->workqueue);
1197 work_err:
1198         kfree(priv);
1199         return ret;
1200 }
1201
1202 static int twl6040_remove(struct snd_soc_codec *codec)
1203 {
1204         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
1205         int audpwron = priv->audpwron;
1206         int naudint = priv->naudint;
1207
1208         twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
1209
1210         if (gpio_is_valid(audpwron))
1211                 gpio_free(audpwron);
1212
1213         if (naudint)
1214                 free_irq(naudint, codec);
1215
1216         destroy_workqueue(priv->workqueue);
1217         kfree(priv);
1218
1219         return 0;
1220 }
1221
1222 static struct snd_soc_codec_driver soc_codec_dev_twl6040 = {
1223         .probe = twl6040_probe,
1224         .remove = twl6040_remove,
1225         .suspend = twl6040_suspend,
1226         .resume = twl6040_resume,
1227         .read = twl6040_read_reg_cache,
1228         .write = twl6040_write,
1229         .set_bias_level = twl6040_set_bias_level,
1230         .reg_cache_size = ARRAY_SIZE(twl6040_reg),
1231         .reg_word_size = sizeof(u8),
1232         .reg_cache_default = twl6040_reg,
1233 };
1234
1235 static int __devinit twl6040_codec_probe(struct platform_device *pdev)
1236 {
1237         return snd_soc_register_codec(&pdev->dev,
1238                         &soc_codec_dev_twl6040, &twl6040_dai, 1);
1239 }
1240
1241 static int __devexit twl6040_codec_remove(struct platform_device *pdev)
1242 {
1243         snd_soc_unregister_codec(&pdev->dev);
1244         return 0;
1245 }
1246
1247 static struct platform_driver twl6040_codec_driver = {
1248         .driver = {
1249                 .name = "twl6040-codec",
1250                 .owner = THIS_MODULE,
1251         },
1252         .probe = twl6040_codec_probe,
1253         .remove = __devexit_p(twl6040_codec_remove),
1254 };
1255
1256 static int __init twl6040_codec_init(void)
1257 {
1258         return platform_driver_register(&twl6040_codec_driver);
1259 }
1260 module_init(twl6040_codec_init);
1261
1262 static void __exit twl6040_codec_exit(void)
1263 {
1264         platform_driver_unregister(&twl6040_codec_driver);
1265 }
1266 module_exit(twl6040_codec_exit);
1267
1268 MODULE_DESCRIPTION("ASoC TWL6040 codec driver");
1269 MODULE_AUTHOR("Misael Lopez Cruz");
1270 MODULE_LICENSE("GPL");