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/soc-dapm.h>
  38 #include <sound/initval.h>
  39 #include <sound/tlv.h>
  40
  41 #include "twl6040.h"
  42
  43 #define TWL6040_RATES    (SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
  44 #define TWL6040_FORMATS  (SNDRV_PCM_FMTBIT_S32_LE)
  45
  46 /* codec private data */
  47 struct twl6040_data {
  48         struct snd_soc_codec codec;
  49         int audpwron;
  50         int naudint;
  51         int codec_powered;
  52         int pll;
  53         int non_lp;
  54         unsigned int sysclk;
  55         struct snd_pcm_hw_constraint_list *sysclk_constraints;
  56         struct completion ready;
  57 };
  58
  59 /*
  60  * twl6040 register cache & default register settings
  61  */
  62 static const u8 twl6040_reg[TWL6040_CACHEREGNUM] = {
  63         0x00, /* not used               0x00    */
  64         0x4B, /* TWL6040_ASICID (ro)    0x01    */
  65         0x00, /* TWL6040_ASICREV (ro)   0x02    */
  66         0x00, /* TWL6040_INTID          0x03    */
  67         0x00, /* TWL6040_INTMR          0x04    */
  68         0x00, /* TWL6040_NCPCTRL        0x05    */
  69         0x00, /* TWL6040_LDOCTL         0x06    */
  70         0x60, /* TWL6040_HPPLLCTL       0x07    */
  71         0x00, /* TWL6040_LPPLLCTL       0x08    */
  72         0x4A, /* TWL6040_LPPLLDIV       0x09    */
  73         0x00, /* TWL6040_AMICBCTL       0x0A    */
  74         0x00, /* TWL6040_DMICBCTL       0x0B    */
  75         0x18, /* TWL6040_MICLCTL        0x0C    - No input selected on Left Mic */
  76         0x18, /* TWL6040_MICRCTL        0x0D    - No input selected on Right Mic */
  77         0x00, /* TWL6040_MICGAIN        0x0E    */
  78         0x1B, /* TWL6040_LINEGAIN       0x0F    */
  79         0x00, /* TWL6040_HSLCTL         0x10    */
  80         0x00, /* TWL6040_HSRCTL         0x11    */
  81         0x00, /* TWL6040_HSGAIN         0x12    */
  82         0x00, /* TWL6040_EARCTL         0x13    */
  83         0x00, /* TWL6040_HFLCTL         0x14    */
  84         0x00, /* TWL6040_HFLGAIN        0x15    */
  85         0x00, /* TWL6040_HFRCTL         0x16    */
  86         0x00, /* TWL6040_HFRGAIN        0x17    */
  87         0x00, /* TWL6040_VIBCTLL        0x18    */
  88         0x00, /* TWL6040_VIBDATL        0x19    */
  89         0x00, /* TWL6040_VIBCTLR        0x1A    */
  90         0x00, /* TWL6040_VIBDATR        0x1B    */
  91         0x00, /* TWL6040_HKCTL1         0x1C    */
  92         0x00, /* TWL6040_HKCTL2         0x1D    */
  93         0x00, /* TWL6040_GPOCTL         0x1E    */
  94         0x00, /* TWL6040_ALB            0x1F    */
  95         0x00, /* TWL6040_DLB            0x20    */
  96         0x00, /* not used               0x21    */
  97         0x00, /* not used               0x22    */
  98         0x00, /* not used               0x23    */
  99         0x00, /* not used               0x24    */
 100         0x00, /* not used               0x25    */
 101         0x00, /* not used               0x26    */
 102         0x00, /* not used               0x27    */
 103         0x00, /* TWL6040_TRIM1          0x28    */
 104         0x00, /* TWL6040_TRIM2          0x29    */
 105         0x00, /* TWL6040_TRIM3          0x2A    */
 106         0x00, /* TWL6040_HSOTRIM        0x2B    */
 107         0x00, /* TWL6040_HFOTRIM        0x2C    */
 108         0x09, /* TWL6040_ACCCTL         0x2D    */
 109         0x00, /* TWL6040_STATUS (ro)    0x2E    */
 110 };
 111
 112 /*
 113  * twl6040 vio/gnd registers:
 114  * registers under vio/gnd supply can be accessed
 115  * before the power-up sequence, after NRESPWRON goes high
 116  */
 117 static const int twl6040_vio_reg[TWL6040_VIOREGNUM] = {
 118         TWL6040_REG_ASICID,
 119         TWL6040_REG_ASICREV,
 120         TWL6040_REG_INTID,
 121         TWL6040_REG_INTMR,
 122         TWL6040_REG_NCPCTL,
 123         TWL6040_REG_LDOCTL,
 124         TWL6040_REG_AMICBCTL,
 125         TWL6040_REG_DMICBCTL,
 126         TWL6040_REG_HKCTL1,
 127         TWL6040_REG_HKCTL2,
 128         TWL6040_REG_GPOCTL,
 129         TWL6040_REG_TRIM1,
 130         TWL6040_REG_TRIM2,
 131         TWL6040_REG_TRIM3,
 132         TWL6040_REG_HSOTRIM,
 133         TWL6040_REG_HFOTRIM,
 134         TWL6040_REG_ACCCTL,
 135         TWL6040_REG_STATUS,
 136 };
 137
 138 /*
 139  * twl6040 vdd/vss registers:
 140  * registers under vdd/vss supplies can only be accessed
 141  * after the power-up sequence
 142  */
 143 static const int twl6040_vdd_reg[TWL6040_VDDREGNUM] = {
 144         TWL6040_REG_HPPLLCTL,
 145         TWL6040_REG_LPPLLCTL,
 146         TWL6040_REG_LPPLLDIV,
 147         TWL6040_REG_MICLCTL,
 148         TWL6040_REG_MICRCTL,
 149         TWL6040_REG_MICGAIN,
 150         TWL6040_REG_LINEGAIN,
 151         TWL6040_REG_HSLCTL,
 152         TWL6040_REG_HSRCTL,
 153         TWL6040_REG_HSGAIN,
 154         TWL6040_REG_EARCTL,
 155         TWL6040_REG_HFLCTL,
 156         TWL6040_REG_HFLGAIN,
 157         TWL6040_REG_HFRCTL,
 158         TWL6040_REG_HFRGAIN,
 159         TWL6040_REG_VIBCTLL,
 160         TWL6040_REG_VIBDATL,
 161         TWL6040_REG_VIBCTLR,
 162         TWL6040_REG_VIBDATR,
 163         TWL6040_REG_ALB,
 164         TWL6040_REG_DLB,
 165 };
 166
 167 /*
 168  * read twl6040 register cache
 169  */
 170 static inline unsigned int twl6040_read_reg_cache(struct snd_soc_codec *codec,
 171                                                 unsigned int reg)
 172 {
 173         u8 *cache = codec->reg_cache;
 174
 175         if (reg >= TWL6040_CACHEREGNUM)
 176                 return -EIO;
 177
 178         return cache[reg];
 179 }
 180
 181 /*
 182  * write twl6040 register cache
 183  */
 184 static inline void twl6040_write_reg_cache(struct snd_soc_codec *codec,
 185                                                 u8 reg, u8 value)
 186 {
 187         u8 *cache = codec->reg_cache;
 188
 189         if (reg >= TWL6040_CACHEREGNUM)
 190                 return;
 191         cache[reg] = value;
 192 }
 193
 194 /*
 195  * read from twl6040 hardware register
 196  */
 197 static int twl6040_read_reg_volatile(struct snd_soc_codec *codec,
 198                         unsigned int reg)
 199 {
 200         u8 value;
 201
 202         if (reg >= TWL6040_CACHEREGNUM)
 203                 return -EIO;
 204
 205         twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &value, reg);
 206         twl6040_write_reg_cache(codec, reg, value);
 207
 208         return value;
 209 }
 210
 211 /*
 212  * write to the twl6040 register space
 213  */
 214 static int twl6040_write(struct snd_soc_codec *codec,
 215                         unsigned int reg, unsigned int value)
 216 {
 217         if (reg >= TWL6040_CACHEREGNUM)
 218                 return -EIO;
 219
 220         twl6040_write_reg_cache(codec, reg, value);
 221         return twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE, value, reg);
 222 }
 223
 224 static void twl6040_init_vio_regs(struct snd_soc_codec *codec)
 225 {
 226         u8 *cache = codec->reg_cache;
 227         int reg, i;
 228
 229         /* allow registers to be accessed by i2c */
 230         twl6040_write(codec, TWL6040_REG_ACCCTL, cache[TWL6040_REG_ACCCTL]);
 231
 232         for (i = 0; i < TWL6040_VIOREGNUM; i++) {
 233                 reg = twl6040_vio_reg[i];
 234                 /* skip read-only registers (ASICID, ASICREV, STATUS) */
 235                 switch (reg) {
 236                 case TWL6040_REG_ASICID:
 237                 case TWL6040_REG_ASICREV:
 238                 case TWL6040_REG_STATUS:
 239                         continue;
 240                 default:
 241                         break;
 242                 }
 243                 twl6040_write(codec, reg, cache[reg]);
 244         }
 245 }
 246
 247 static void twl6040_init_vdd_regs(struct snd_soc_codec *codec)
 248 {
 249         u8 *cache = codec->reg_cache;
 250         int reg, i;
 251
 252         for (i = 0; i < TWL6040_VDDREGNUM; i++) {
 253                 reg = twl6040_vdd_reg[i];
 254                 twl6040_write(codec, reg, cache[reg]);
 255         }
 256 }
 257
 258 /* twl6040 codec manual power-up sequence */
 259 static void twl6040_power_up(struct snd_soc_codec *codec)
 260 {
 261         u8 ncpctl, ldoctl, lppllctl, accctl;
 262
 263         ncpctl = twl6040_read_reg_cache(codec, TWL6040_REG_NCPCTL);
 264         ldoctl = twl6040_read_reg_cache(codec, TWL6040_REG_LDOCTL);
 265         lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
 266         accctl = twl6040_read_reg_cache(codec, TWL6040_REG_ACCCTL);
 267
 268         /* enable reference system */
 269         ldoctl |= TWL6040_REFENA;
 270         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 271         msleep(10);
 272         /* enable internal oscillator */
 273         ldoctl |= TWL6040_OSCENA;
 274         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 275         udelay(10);
 276         /* enable high-side ldo */
 277         ldoctl |= TWL6040_HSLDOENA;
 278         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 279         udelay(244);
 280         /* enable negative charge pump */
 281         ncpctl |= TWL6040_NCPENA | TWL6040_NCPOPEN;
 282         twl6040_write(codec, TWL6040_REG_NCPCTL, ncpctl);
 283         udelay(488);
 284         /* enable low-side ldo */
 285         ldoctl |= TWL6040_LSLDOENA;
 286         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 287         udelay(244);
 288         /* enable low-power pll */
 289         lppllctl |= TWL6040_LPLLENA;
 290         twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 291         /* reset state machine */
 292         accctl |= TWL6040_RESETSPLIT;
 293         twl6040_write(codec, TWL6040_REG_ACCCTL, accctl);
 294         mdelay(5);
 295         accctl &= ~TWL6040_RESETSPLIT;
 296         twl6040_write(codec, TWL6040_REG_ACCCTL, accctl);
 297         /* disable internal oscillator */
 298         ldoctl &= ~TWL6040_OSCENA;
 299         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 300 }
 301
 302 /* twl6040 codec manual power-down sequence */
 303 static void twl6040_power_down(struct snd_soc_codec *codec)
 304 {
 305         u8 ncpctl, ldoctl, lppllctl, accctl;
 306
 307         ncpctl = twl6040_read_reg_cache(codec, TWL6040_REG_NCPCTL);
 308         ldoctl = twl6040_read_reg_cache(codec, TWL6040_REG_LDOCTL);
 309         lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
 310         accctl = twl6040_read_reg_cache(codec, TWL6040_REG_ACCCTL);
 311
 312         /* enable internal oscillator */
 313         ldoctl |= TWL6040_OSCENA;
 314         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 315         udelay(10);
 316         /* disable low-power pll */
 317         lppllctl &= ~TWL6040_LPLLENA;
 318         twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 319         /* disable low-side ldo */
 320         ldoctl &= ~TWL6040_LSLDOENA;
 321         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 322         udelay(244);
 323         /* disable negative charge pump */
 324         ncpctl &= ~(TWL6040_NCPENA | TWL6040_NCPOPEN);
 325         twl6040_write(codec, TWL6040_REG_NCPCTL, ncpctl);
 326         udelay(488);
 327         /* disable high-side ldo */
 328         ldoctl &= ~TWL6040_HSLDOENA;
 329         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 330         udelay(244);
 331         /* disable internal oscillator */
 332         ldoctl &= ~TWL6040_OSCENA;
 333         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 334         /* disable reference system */
 335         ldoctl &= ~TWL6040_REFENA;
 336         twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
 337         msleep(10);
 338 }
 339
 340 /* set headset dac and driver power mode */
 341 static int headset_power_mode(struct snd_soc_codec *codec, int high_perf)
 342 {
 343         int hslctl, hsrctl;
 344         int mask = TWL6040_HSDRVMODEL | TWL6040_HSDACMODEL;
 345
 346         hslctl = twl6040_read_reg_cache(codec, TWL6040_REG_HSLCTL);
 347         hsrctl = twl6040_read_reg_cache(codec, TWL6040_REG_HSRCTL);
 348
 349         if (high_perf) {
 350                 hslctl &= ~mask;
 351                 hsrctl &= ~mask;
 352         } else {
 353                 hslctl |= mask;
 354                 hsrctl |= mask;
 355         }
 356
 357         twl6040_write(codec, TWL6040_REG_HSLCTL, hslctl);
 358         twl6040_write(codec, TWL6040_REG_HSRCTL, hsrctl);
 359
 360         return 0;
 361 }
 362
 363 static int twl6040_power_mode_event(struct snd_soc_dapm_widget *w,
 364                         struct snd_kcontrol *kcontrol, int event)
 365 {
 366         struct snd_soc_codec *codec = w->codec;
 367         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 368
 369         if (SND_SOC_DAPM_EVENT_ON(event))
 370                 priv->non_lp++;
 371         else
 372                 priv->non_lp--;
 373
 374         return 0;
 375 }
 376
 377 /* audio interrupt handler */
 378 static irqreturn_t twl6040_naudint_handler(int irq, void *data)
 379 {
 380         struct snd_soc_codec *codec = data;
 381         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 382         u8 intid;
 383
 384         twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &intid, TWL6040_REG_INTID);
 385
 386         switch (intid) {
 387         case TWL6040_THINT:
 388                 dev_alert(codec->dev, "die temp over-limit detection\n");
 389                 break;
 390         case TWL6040_PLUGINT:
 391         case TWL6040_UNPLUGINT:
 392         case TWL6040_HOOKINT:
 393                 break;
 394         case TWL6040_HFINT:
 395                 dev_alert(codec->dev, "hf drivers over current detection\n");
 396                 break;
 397         case TWL6040_VIBINT:
 398                 dev_alert(codec->dev, "vib drivers over current detection\n");
 399                 break;
 400         case TWL6040_READYINT:
 401                 complete(&priv->ready);
 402                 break;
 403         default:
 404                 dev_err(codec->dev, "unknown audio interrupt %d\n", intid);
 405                 break;
 406         }
 407
 408         return IRQ_HANDLED;
 409 }
 410
 411 /*
 412  * MICATT volume control:
 413  * from -6 to 0 dB in 6 dB steps
 414  */
 415 static DECLARE_TLV_DB_SCALE(mic_preamp_tlv, -600, 600, 0);
 416
 417 /*
 418  * MICGAIN volume control:
 419  * from 6 to 30 dB in 6 dB steps
 420  */
 421 static DECLARE_TLV_DB_SCALE(mic_amp_tlv, 600, 600, 0);
 422
 423 /*
 424  * HSGAIN volume control:
 425  * from -30 to 0 dB in 2 dB steps
 426  */
 427 static DECLARE_TLV_DB_SCALE(hs_tlv, -3000, 200, 0);
 428
 429 /*
 430  * HFGAIN volume control:
 431  * from -52 to 6 dB in 2 dB steps
 432  */
 433 static DECLARE_TLV_DB_SCALE(hf_tlv, -5200, 200, 0);
 434
 435 /*
 436  * EPGAIN volume control:
 437  * from -24 to 6 dB in 2 dB steps
 438  */
 439 static DECLARE_TLV_DB_SCALE(ep_tlv, -2400, 200, 0);
 440
 441 /* Left analog microphone selection */
 442 static const char *twl6040_amicl_texts[] =
 443         {"Headset Mic", "Main Mic", "Aux/FM Left", "Off"};
 444
 445 /* Right analog microphone selection */
 446 static const char *twl6040_amicr_texts[] =
 447         {"Headset Mic", "Sub Mic", "Aux/FM Right", "Off"};
 448
 449 static const struct soc_enum twl6040_enum[] = {
 450         SOC_ENUM_SINGLE(TWL6040_REG_MICLCTL, 3, 3, twl6040_amicl_texts),
 451         SOC_ENUM_SINGLE(TWL6040_REG_MICRCTL, 3, 3, twl6040_amicr_texts),
 452 };
 453
 454 static const struct snd_kcontrol_new amicl_control =
 455         SOC_DAPM_ENUM("Route", twl6040_enum[0]);
 456
 457 static const struct snd_kcontrol_new amicr_control =
 458         SOC_DAPM_ENUM("Route", twl6040_enum[1]);
 459
 460 /* Headset DAC playback switches */
 461 static const struct snd_kcontrol_new hsdacl_switch_controls =
 462         SOC_DAPM_SINGLE("Switch", TWL6040_REG_HSLCTL, 5, 1, 0);
 463
 464 static const struct snd_kcontrol_new hsdacr_switch_controls =
 465         SOC_DAPM_SINGLE("Switch", TWL6040_REG_HSRCTL, 5, 1, 0);
 466
 467 /* Handsfree DAC playback switches */
 468 static const struct snd_kcontrol_new hfdacl_switch_controls =
 469         SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFLCTL, 2, 1, 0);
 470
 471 static const struct snd_kcontrol_new hfdacr_switch_controls =
 472         SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFRCTL, 2, 1, 0);
 473
 474 /* Headset driver switches */
 475 static const struct snd_kcontrol_new hsl_driver_switch_controls =
 476         SOC_DAPM_SINGLE("Switch", TWL6040_REG_HSLCTL, 2, 1, 0);
 477
 478 static const struct snd_kcontrol_new hsr_driver_switch_controls =
 479         SOC_DAPM_SINGLE("Switch", TWL6040_REG_HSRCTL, 2, 1, 0);
 480
 481 /* Handsfree driver switches */
 482 static const struct snd_kcontrol_new hfl_driver_switch_controls =
 483         SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFLCTL, 4, 1, 0);
 484
 485 static const struct snd_kcontrol_new hfr_driver_switch_controls =
 486         SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFRCTL, 4, 1, 0);
 487
 488 static const struct snd_kcontrol_new ep_driver_switch_controls =
 489         SOC_DAPM_SINGLE("Switch", TWL6040_REG_EARCTL, 0, 1, 0);
 490
 491 static const struct snd_kcontrol_new twl6040_snd_controls[] = {
 492         /* Capture gains */
 493         SOC_DOUBLE_TLV("Capture Preamplifier Volume",
 494                 TWL6040_REG_MICGAIN, 6, 7, 1, 1, mic_preamp_tlv),
 495         SOC_DOUBLE_TLV("Capture Volume",
 496                 TWL6040_REG_MICGAIN, 0, 3, 4, 0, mic_amp_tlv),
 497
 498         /* Playback gains */
 499         SOC_DOUBLE_TLV("Headset Playback Volume",
 500                 TWL6040_REG_HSGAIN, 0, 4, 0xF, 1, hs_tlv),
 501         SOC_DOUBLE_R_TLV("Handsfree Playback Volume",
 502                 TWL6040_REG_HFLGAIN, TWL6040_REG_HFRGAIN, 0, 0x1D, 1, hf_tlv),
 503         SOC_SINGLE_TLV("Earphone Playback Volume",
 504                 TWL6040_REG_EARCTL, 1, 0xF, 1, ep_tlv),
 505 };
 506
 507 static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = {
 508         /* Inputs */
 509         SND_SOC_DAPM_INPUT("MAINMIC"),
 510         SND_SOC_DAPM_INPUT("HSMIC"),
 511         SND_SOC_DAPM_INPUT("SUBMIC"),
 512         SND_SOC_DAPM_INPUT("AFML"),
 513         SND_SOC_DAPM_INPUT("AFMR"),
 514
 515         /* Outputs */
 516         SND_SOC_DAPM_OUTPUT("HSOL"),
 517         SND_SOC_DAPM_OUTPUT("HSOR"),
 518         SND_SOC_DAPM_OUTPUT("HFL"),
 519         SND_SOC_DAPM_OUTPUT("HFR"),
 520         SND_SOC_DAPM_OUTPUT("EP"),
 521
 522         /* Analog input muxes for the capture amplifiers */
 523         SND_SOC_DAPM_MUX("Analog Left Capture Route",
 524                         SND_SOC_NOPM, 0, 0, &amicl_control),
 525         SND_SOC_DAPM_MUX("Analog Right Capture Route",
 526                         SND_SOC_NOPM, 0, 0, &amicr_control),
 527
 528         /* Analog capture PGAs */
 529         SND_SOC_DAPM_PGA("MicAmpL",
 530                         TWL6040_REG_MICLCTL, 0, 0, NULL, 0),
 531         SND_SOC_DAPM_PGA("MicAmpR",
 532                         TWL6040_REG_MICRCTL, 0, 0, NULL, 0),
 533
 534         /* ADCs */
 535         SND_SOC_DAPM_ADC("ADC Left", "Left Front Capture",
 536                         TWL6040_REG_MICLCTL, 2, 0),
 537         SND_SOC_DAPM_ADC("ADC Right", "Right Front Capture",
 538                         TWL6040_REG_MICRCTL, 2, 0),
 539
 540         /* Microphone bias */
 541         SND_SOC_DAPM_MICBIAS("Headset Mic Bias",
 542                         TWL6040_REG_AMICBCTL, 0, 0),
 543         SND_SOC_DAPM_MICBIAS("Main Mic Bias",
 544                         TWL6040_REG_AMICBCTL, 4, 0),
 545         SND_SOC_DAPM_MICBIAS("Digital Mic1 Bias",
 546                         TWL6040_REG_DMICBCTL, 0, 0),
 547         SND_SOC_DAPM_MICBIAS("Digital Mic2 Bias",
 548                         TWL6040_REG_DMICBCTL, 4, 0),
 549
 550         /* DACs */
 551         SND_SOC_DAPM_DAC("HSDAC Left", "Headset Playback",
 552                         TWL6040_REG_HSLCTL, 0, 0),
 553         SND_SOC_DAPM_DAC("HSDAC Right", "Headset Playback",
 554                         TWL6040_REG_HSRCTL, 0, 0),
 555         SND_SOC_DAPM_DAC_E("HFDAC Left", "Handsfree Playback",
 556                         TWL6040_REG_HFLCTL, 0, 0,
 557                         twl6040_power_mode_event,
 558                         SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
 559         SND_SOC_DAPM_DAC_E("HFDAC Right", "Handsfree Playback",
 560                         TWL6040_REG_HFRCTL, 0, 0,
 561                         twl6040_power_mode_event,
 562                         SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
 563
 564         /* Analog playback switches */
 565         SND_SOC_DAPM_SWITCH("HSDAC Left Playback",
 566                         SND_SOC_NOPM, 0, 0, &hsdacl_switch_controls),
 567         SND_SOC_DAPM_SWITCH("HSDAC Right Playback",
 568                         SND_SOC_NOPM, 0, 0, &hsdacr_switch_controls),
 569         SND_SOC_DAPM_SWITCH("HFDAC Left Playback",
 570                         SND_SOC_NOPM, 0, 0, &hfdacl_switch_controls),
 571         SND_SOC_DAPM_SWITCH("HFDAC Right Playback",
 572                         SND_SOC_NOPM, 0, 0, &hfdacr_switch_controls),
 573
 574         SND_SOC_DAPM_SWITCH("Headset Left Driver",
 575                         SND_SOC_NOPM, 0, 0, &hsl_driver_switch_controls),
 576         SND_SOC_DAPM_SWITCH("Headset Right Driver",
 577                         SND_SOC_NOPM, 0, 0, &hsr_driver_switch_controls),
 578         SND_SOC_DAPM_SWITCH_E("Handsfree Left Driver",
 579                         SND_SOC_NOPM, 0, 0, &hfl_driver_switch_controls,
 580                         twl6040_power_mode_event,
 581                         SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
 582         SND_SOC_DAPM_SWITCH_E("Handsfree Right Driver",
 583                         SND_SOC_NOPM, 0, 0, &hfr_driver_switch_controls,
 584                         twl6040_power_mode_event,
 585                         SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
 586         SND_SOC_DAPM_SWITCH_E("Earphone Driver",
 587                         SND_SOC_NOPM, 0, 0, &ep_driver_switch_controls,
 588                         twl6040_power_mode_event,
 589                         SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
 590
 591         /* Analog playback PGAs */
 592         SND_SOC_DAPM_PGA("HFDAC Left PGA",
 593                         TWL6040_REG_HFLCTL, 1, 0, NULL, 0),
 594         SND_SOC_DAPM_PGA("HFDAC Right PGA",
 595                         TWL6040_REG_HFRCTL, 1, 0, NULL, 0),
 596
 597 };
 598
 599 static const struct snd_soc_dapm_route intercon[] = {
 600         /* Capture path */
 601         {"Analog Left Capture Route", "Headset Mic", "HSMIC"},
 602         {"Analog Left Capture Route", "Main Mic", "MAINMIC"},
 603         {"Analog Left Capture Route", "Aux/FM Left", "AFML"},
 604
 605         {"Analog Right Capture Route", "Headset Mic", "HSMIC"},
 606         {"Analog Right Capture Route", "Sub Mic", "SUBMIC"},
 607         {"Analog Right Capture Route", "Aux/FM Right", "AFMR"},
 608
 609         {"MicAmpL", NULL, "Analog Left Capture Route"},
 610         {"MicAmpR", NULL, "Analog Right Capture Route"},
 611
 612         {"ADC Left", NULL, "MicAmpL"},
 613         {"ADC Right", NULL, "MicAmpR"},
 614
 615         /* Headset playback path */
 616         {"HSDAC Left Playback", "Switch", "HSDAC Left"},
 617         {"HSDAC Right Playback", "Switch", "HSDAC Right"},
 618
 619         {"Headset Left Driver", "Switch", "HSDAC Left Playback"},
 620         {"Headset Right Driver", "Switch", "HSDAC Right Playback"},
 621
 622         {"HSOL", NULL, "Headset Left Driver"},
 623         {"HSOR", NULL, "Headset Right Driver"},
 624
 625         /* Earphone playback path */
 626         {"Earphone Driver", "Switch", "HSDAC Left"},
 627         {"EP", NULL, "Earphone Driver"},
 628
 629         /* Handsfree playback path */
 630         {"HFDAC Left Playback", "Switch", "HFDAC Left"},
 631         {"HFDAC Right Playback", "Switch", "HFDAC Right"},
 632
 633         {"HFDAC Left PGA", NULL, "HFDAC Left Playback"},
 634         {"HFDAC Right PGA", NULL, "HFDAC Right Playback"},
 635
 636         {"Handsfree Left Driver", "Switch", "HFDAC Left PGA"},
 637         {"Handsfree Right Driver", "Switch", "HFDAC Right PGA"},
 638
 639         {"HFL", NULL, "Handsfree Left Driver"},
 640         {"HFR", NULL, "Handsfree Right Driver"},
 641 };
 642
 643 static int twl6040_add_widgets(struct snd_soc_codec *codec)
 644 {
 645         snd_soc_dapm_new_controls(codec, twl6040_dapm_widgets,
 646                                  ARRAY_SIZE(twl6040_dapm_widgets));
 647
 648         snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
 649
 650         snd_soc_dapm_new_widgets(codec);
 651
 652         return 0;
 653 }
 654
 655 static int twl6040_power_up_completion(struct snd_soc_codec *codec,
 656                                         int naudint)
 657 {
 658         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 659         int time_left;
 660         u8 intid;
 661
 662         time_left = wait_for_completion_timeout(&priv->ready,
 663                                 msecs_to_jiffies(48));
 664
 665         if (!time_left) {
 666                 twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &intid,
 667                                                         TWL6040_REG_INTID);
 668                 if (!(intid & TWL6040_READYINT)) {
 669                         dev_err(codec->dev, "timeout waiting for READYINT\n");
 670                         return -ETIMEDOUT;
 671                 }
 672         }
 673
 674         priv->codec_powered = 1;
 675
 676         return 0;
 677 }
 678
 679 static int twl6040_set_bias_level(struct snd_soc_codec *codec,
 680                                 enum snd_soc_bias_level level)
 681 {
 682         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 683         int audpwron = priv->audpwron;
 684         int naudint = priv->naudint;
 685         int ret;
 686
 687         switch (level) {
 688         case SND_SOC_BIAS_ON:
 689                 break;
 690         case SND_SOC_BIAS_PREPARE:
 691                 break;
 692         case SND_SOC_BIAS_STANDBY:
 693                 if (priv->codec_powered)
 694                         break;
 695
 696                 if (gpio_is_valid(audpwron)) {
 697                         /* use AUDPWRON line */
 698                         gpio_set_value(audpwron, 1);
 699
 700                         /* wait for power-up completion */
 701                         ret = twl6040_power_up_completion(codec, naudint);
 702                         if (ret)
 703                                 return ret;
 704
 705                         /* sync registers updated during power-up sequence */
 706                         twl6040_read_reg_volatile(codec, TWL6040_REG_NCPCTL);
 707                         twl6040_read_reg_volatile(codec, TWL6040_REG_LDOCTL);
 708                         twl6040_read_reg_volatile(codec, TWL6040_REG_LPPLLCTL);
 709                 } else {
 710                         /* use manual power-up sequence */
 711                         twl6040_power_up(codec);
 712                         priv->codec_powered = 1;
 713                 }
 714
 715                 /* initialize vdd/vss registers with reg_cache */
 716                 twl6040_init_vdd_regs(codec);
 717                 break;
 718         case SND_SOC_BIAS_OFF:
 719                 if (!priv->codec_powered)
 720                         break;
 721
 722                 if (gpio_is_valid(audpwron)) {
 723                         /* use AUDPWRON line */
 724                         gpio_set_value(audpwron, 0);
 725
 726                         /* power-down sequence latency */
 727                         udelay(500);
 728
 729                         /* sync registers updated during power-down sequence */
 730                         twl6040_read_reg_volatile(codec, TWL6040_REG_NCPCTL);
 731                         twl6040_read_reg_volatile(codec, TWL6040_REG_LDOCTL);
 732                         twl6040_write_reg_cache(codec, TWL6040_REG_LPPLLCTL,
 733                                                 0x00);
 734                 } else {
 735                         /* use manual power-down sequence */
 736                         twl6040_power_down(codec);
 737                 }
 738
 739                 priv->codec_powered = 0;
 740                 break;
 741         }
 742
 743         codec->bias_level = level;
 744
 745         return 0;
 746 }
 747
 748 /* set of rates for each pll: low-power and high-performance */
 749
 750 static unsigned int lp_rates[] = {
 751         88200,
 752         96000,
 753 };
 754
 755 static struct snd_pcm_hw_constraint_list lp_constraints = {
 756         .count  = ARRAY_SIZE(lp_rates),
 757         .list   = lp_rates,
 758 };
 759
 760 static unsigned int hp_rates[] = {
 761         96000,
 762 };
 763
 764 static struct snd_pcm_hw_constraint_list hp_constraints = {
 765         .count  = ARRAY_SIZE(hp_rates),
 766         .list   = hp_rates,
 767 };
 768
 769 static int twl6040_startup(struct snd_pcm_substream *substream,
 770                         struct snd_soc_dai *dai)
 771 {
 772         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 773         struct snd_soc_device *socdev = rtd->socdev;
 774         struct snd_soc_codec *codec = socdev->card->codec;
 775         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 776
 777         if (!priv->sysclk) {
 778                 dev_err(codec->dev,
 779                         "no mclk configured, call set_sysclk() on init\n");
 780                 return -EINVAL;
 781         }
 782
 783         /*
 784          * capture is not supported at 17.64 MHz,
 785          * it's reserved for headset low-power playback scenario
 786          */
 787         if ((priv->sysclk == 17640000) && substream->stream) {
 788                 dev_err(codec->dev,
 789                         "capture mode is not supported at %dHz\n",
 790                         priv->sysclk);
 791                 return -EINVAL;
 792         }
 793
 794         snd_pcm_hw_constraint_list(substream->runtime, 0,
 795                                 SNDRV_PCM_HW_PARAM_RATE,
 796                                 priv->sysclk_constraints);
 797
 798         return 0;
 799 }
 800
 801 static int twl6040_hw_params(struct snd_pcm_substream *substream,
 802                         struct snd_pcm_hw_params *params,
 803                         struct snd_soc_dai *dai)
 804 {
 805         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 806         struct snd_soc_device *socdev = rtd->socdev;
 807         struct snd_soc_codec *codec = socdev->card->codec;
 808         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 809         u8 lppllctl;
 810         int rate;
 811
 812         /* nothing to do for high-perf pll, it supports only 48 kHz */
 813         if (priv->pll == TWL6040_HPPLL_ID)
 814                 return 0;
 815
 816         lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
 817
 818         rate = params_rate(params);
 819         switch (rate) {
 820         case 88200:
 821                 lppllctl |= TWL6040_LPLLFIN;
 822                 priv->sysclk = 17640000;
 823                 break;
 824         case 96000:
 825                 lppllctl &= ~TWL6040_LPLLFIN;
 826                 priv->sysclk = 19200000;
 827                 break;
 828         default:
 829                 dev_err(codec->dev, "unsupported rate %d\n", rate);
 830                 return -EINVAL;
 831         }
 832
 833         twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 834
 835         return 0;
 836 }
 837
 838 static int twl6040_trigger(struct snd_pcm_substream *substream,
 839                         int cmd, struct snd_soc_dai *dai)
 840 {
 841         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 842         struct snd_soc_device *socdev = rtd->socdev;
 843         struct snd_soc_codec *codec = socdev->card->codec;
 844         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 845
 846         switch (cmd) {
 847         case SNDRV_PCM_TRIGGER_START:
 848         case SNDRV_PCM_TRIGGER_RESUME:
 849                 /*
 850                  * low-power playback mode is restricted
 851                  * for headset path only
 852                  */
 853                 if ((priv->sysclk == 17640000) && priv->non_lp) {
 854                         dev_err(codec->dev,
 855                                 "some enabled paths aren't supported at %dHz\n",
 856                                 priv->sysclk);
 857                         return -EPERM;
 858                 }
 859                 break;
 860         default:
 861                 break;
 862         }
 863
 864         return 0;
 865 }
 866
 867 static int twl6040_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 868                 int clk_id, unsigned int freq, int dir)
 869 {
 870         struct snd_soc_codec *codec = codec_dai->codec;
 871         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 872         u8 hppllctl, lppllctl;
 873
 874         hppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_HPPLLCTL);
 875         lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
 876
 877         switch (clk_id) {
 878         case TWL6040_SYSCLK_SEL_LPPLL:
 879                 switch (freq) {
 880                 case 32768:
 881                         /* headset dac and driver must be in low-power mode */
 882                         headset_power_mode(codec, 0);
 883
 884                         /* clk32k input requires low-power pll */
 885                         lppllctl |= TWL6040_LPLLENA;
 886                         twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 887                         mdelay(5);
 888                         lppllctl &= ~TWL6040_HPLLSEL;
 889                         twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 890                         hppllctl &= ~TWL6040_HPLLENA;
 891                         twl6040_write(codec, TWL6040_REG_HPPLLCTL, hppllctl);
 892                         break;
 893                 default:
 894                         dev_err(codec->dev, "unknown mclk freq %d\n", freq);
 895                         return -EINVAL;
 896                 }
 897
 898                 /* lppll divider */
 899                 switch (priv->sysclk) {
 900                 case 17640000:
 901                         lppllctl |= TWL6040_LPLLFIN;
 902                         break;
 903                 case 19200000:
 904                         lppllctl &= ~TWL6040_LPLLFIN;
 905                         break;
 906                 default:
 907                         /* sysclk not yet configured */
 908                         lppllctl &= ~TWL6040_LPLLFIN;
 909                         priv->sysclk = 19200000;
 910                         break;
 911                 }
 912
 913                 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 914
 915                 priv->pll = TWL6040_LPPLL_ID;
 916                 priv->sysclk_constraints = &lp_constraints;
 917                 break;
 918         case TWL6040_SYSCLK_SEL_HPPLL:
 919                 hppllctl &= ~TWL6040_MCLK_MSK;
 920
 921                 switch (freq) {
 922                 case 12000000:
 923                         /* mclk input, pll enabled */
 924                         hppllctl |= TWL6040_MCLK_12000KHZ |
 925                                     TWL6040_HPLLSQRBP |
 926                                     TWL6040_HPLLENA;
 927                         break;
 928                 case 19200000:
 929                         /* mclk input, pll disabled */
 930                         hppllctl |= TWL6040_MCLK_19200KHZ |
 931                                     TWL6040_HPLLSQRBP |
 932                                     TWL6040_HPLLBP;
 933                         break;
 934                 case 26000000:
 935                         /* mclk input, pll enabled */
 936                         hppllctl |= TWL6040_MCLK_26000KHZ |
 937                                     TWL6040_HPLLSQRBP |
 938                                     TWL6040_HPLLENA;
 939                         break;
 940                 case 38400000:
 941                         /* clk slicer, pll disabled */
 942                         hppllctl |= TWL6040_MCLK_38400KHZ |
 943                                     TWL6040_HPLLSQRENA |
 944                                     TWL6040_HPLLBP;
 945                         break;
 946                 default:
 947                         dev_err(codec->dev, "unknown mclk freq %d\n", freq);
 948                         return -EINVAL;
 949                 }
 950
 951                 /* headset dac and driver must be in high-performance mode */
 952                 headset_power_mode(codec, 1);
 953
 954                 twl6040_write(codec, TWL6040_REG_HPPLLCTL, hppllctl);
 955                 udelay(500);
 956                 lppllctl |= TWL6040_HPLLSEL;
 957                 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 958                 lppllctl &= ~TWL6040_LPLLENA;
 959                 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 960
 961                 /* high-performance pll can provide only 19.2 MHz */
 962                 priv->pll = TWL6040_HPPLL_ID;
 963                 priv->sysclk = 19200000;
 964                 priv->sysclk_constraints = &hp_constraints;
 965                 break;
 966         default:
 967                 dev_err(codec->dev, "unknown clk_id %d\n", clk_id);
 968                 return -EINVAL;
 969         }
 970
 971         return 0;
 972 }
 973
 974 static struct snd_soc_dai_ops twl6040_dai_ops = {
 975         .startup        = twl6040_startup,
 976         .hw_params      = twl6040_hw_params,
 977         .trigger        = twl6040_trigger,
 978         .set_sysclk     = twl6040_set_dai_sysclk,
 979 };
 980
 981 struct snd_soc_dai twl6040_dai = {
 982         .name = "twl6040",
 983         .playback = {
 984                 .stream_name = "Playback",
 985                 .channels_min = 1,
 986                 .channels_max = 4,
 987                 .rates = TWL6040_RATES,
 988                 .formats = TWL6040_FORMATS,
 989         },
 990         .capture = {
 991                 .stream_name = "Capture",
 992                 .channels_min = 1,
 993                 .channels_max = 2,
 994                 .rates = TWL6040_RATES,
 995                 .formats = TWL6040_FORMATS,
 996         },
 997         .ops = &twl6040_dai_ops,
 998 };
 999 EXPORT_SYMBOL_GPL(twl6040_dai);
1000
1001 #ifdef CONFIG_PM
1002 static int twl6040_suspend(struct platform_device *pdev, pm_message_t state)
1003 {
1004         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1005         struct snd_soc_codec *codec = socdev->card->codec;
1006
1007         twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
1008
1009         return 0;
1010 }
1011
1012 static int twl6040_resume(struct platform_device *pdev)
1013 {
1014         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1015         struct snd_soc_codec *codec = socdev->card->codec;
1016
1017         twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1018
1019         return 0;
1020 }
1021 #else
1022 #define twl6040_suspend NULL
1023 #define twl6040_resume NULL
1024 #endif
1025
1026 static struct snd_soc_codec *twl6040_codec;
1027
1028 static int twl6040_probe(struct platform_device *pdev)
1029 {
1030         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1031         struct snd_soc_codec *codec;
1032         int ret = 0;
1033
1034         BUG_ON(!twl6040_codec);
1035
1036         codec = twl6040_codec;
1037         socdev->card->codec = codec;
1038
1039         /* register pcms */
1040         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
1041         if (ret < 0) {
1042                 dev_err(&pdev->dev, "failed to create pcms\n");
1043                 return ret;
1044         }
1045
1046         snd_soc_add_controls(codec, twl6040_snd_controls,
1047                                 ARRAY_SIZE(twl6040_snd_controls));
1048         twl6040_add_widgets(codec);
1049
1050         if (ret < 0) {
1051                 dev_err(&pdev->dev, "failed to register card\n");
1052                 goto card_err;
1053         }
1054
1055         return ret;
1056
1057 card_err:
1058         snd_soc_free_pcms(socdev);
1059         snd_soc_dapm_free(socdev);
1060         return ret;
1061 }
1062
1063 static int twl6040_remove(struct platform_device *pdev)
1064 {
1065         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1066         struct snd_soc_codec *codec = socdev->card->codec;
1067
1068         twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
1069         snd_soc_free_pcms(socdev);
1070         snd_soc_dapm_free(socdev);
1071         kfree(codec);
1072
1073         return 0;
1074 }
1075
1076 struct snd_soc_codec_device soc_codec_dev_twl6040 = {
1077         .probe = twl6040_probe,
1078         .remove = twl6040_remove,
1079         .suspend = twl6040_suspend,
1080         .resume = twl6040_resume,
1081 };
1082 EXPORT_SYMBOL_GPL(soc_codec_dev_twl6040);
1083
1084 static int __devinit twl6040_codec_probe(struct platform_device *pdev)
1085 {
1086         struct twl4030_codec_data *twl_codec = pdev->dev.platform_data;
1087         struct snd_soc_codec *codec;
1088         struct twl6040_data *priv;
1089         int audpwron, naudint;
1090         int ret = 0;
1091
1092         priv = kzalloc(sizeof(struct twl6040_data), GFP_KERNEL);
1093         if (priv == NULL)
1094                 return -ENOMEM;
1095
1096         if (twl_codec) {
1097                 audpwron = twl_codec->audpwron_gpio;
1098                 naudint = twl_codec->naudint_irq;
1099         } else {
1100                 audpwron = -EINVAL;
1101                 naudint = 0;
1102         }
1103
1104         priv->audpwron = audpwron;
1105         priv->naudint = naudint;
1106
1107         codec = &priv->codec;
1108         codec->dev = &pdev->dev;
1109         twl6040_dai.dev = &pdev->dev;
1110
1111         codec->name = "twl6040";
1112         codec->owner = THIS_MODULE;
1113         codec->read = twl6040_read_reg_cache;
1114         codec->write = twl6040_write;
1115         codec->set_bias_level = twl6040_set_bias_level;
1116         snd_soc_codec_set_drvdata(codec, priv);
1117         codec->dai = &twl6040_dai;
1118         codec->num_dai = 1;
1119         codec->reg_cache_size = ARRAY_SIZE(twl6040_reg);
1120         codec->reg_cache = kmemdup(twl6040_reg, sizeof(twl6040_reg),
1121                                         GFP_KERNEL);
1122         if (codec->reg_cache == NULL) {
1123                 ret = -ENOMEM;
1124                 goto cache_err;
1125         }
1126
1127         mutex_init(&codec->mutex);
1128         INIT_LIST_HEAD(&codec->dapm_widgets);
1129         INIT_LIST_HEAD(&codec->dapm_paths);
1130         init_completion(&priv->ready);
1131
1132         if (gpio_is_valid(audpwron)) {
1133                 ret = gpio_request(audpwron, "audpwron");
1134                 if (ret)
1135                         goto gpio1_err;
1136
1137                 ret = gpio_direction_output(audpwron, 0);
1138                 if (ret)
1139                         goto gpio2_err;
1140
1141                 priv->codec_powered = 0;
1142         }
1143
1144         if (naudint) {
1145                 /* audio interrupt */
1146                 ret = request_threaded_irq(naudint, NULL,
1147                                 twl6040_naudint_handler,
1148                                 IRQF_TRIGGER_LOW | IRQF_ONESHOT,
1149                                 "twl6040_codec", codec);
1150                 if (ret)
1151                         goto gpio2_err;
1152         } else {
1153                 if (gpio_is_valid(audpwron)) {
1154                         /* enable only codec ready interrupt */
1155                         twl6040_write_reg_cache(codec, TWL6040_REG_INTMR,
1156                                         ~TWL6040_READYMSK & TWL6040_ALLINT_MSK);
1157                 } else {
1158                         /* no interrupts at all */
1159                         twl6040_write_reg_cache(codec, TWL6040_REG_INTMR,
1160                                                 TWL6040_ALLINT_MSK);
1161                 }
1162         }
1163
1164         /* init vio registers */
1165         twl6040_init_vio_regs(codec);
1166
1167         /* power on device */
1168         ret = twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1169         if (ret)
1170                 goto irq_err;
1171
1172         ret = snd_soc_register_codec(codec);
1173         if (ret)
1174                 goto reg_err;
1175
1176         twl6040_codec = codec;
1177
1178         ret = snd_soc_register_dai(&twl6040_dai);
1179         if (ret)
1180                 goto dai_err;
1181
1182         return 0;
1183
1184 dai_err:
1185         snd_soc_unregister_codec(codec);
1186         twl6040_codec = NULL;
1187 reg_err:
1188         twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
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         kfree(codec->reg_cache);
1197 cache_err:
1198         kfree(priv);
1199         return ret;
1200 }
1201
1202 static int __devexit twl6040_codec_remove(struct platform_device *pdev)
1203 {
1204         struct twl6040_data *priv = snd_soc_codec_get_drvdata(twl6040_codec);
1205         int audpwron = priv->audpwron;
1206         int naudint = priv->naudint;
1207
1208         if (gpio_is_valid(audpwron))
1209                 gpio_free(audpwron);
1210
1211         if (naudint)
1212                 free_irq(naudint, twl6040_codec);
1213
1214         snd_soc_unregister_dai(&twl6040_dai);
1215         snd_soc_unregister_codec(twl6040_codec);
1216
1217         kfree(twl6040_codec);
1218         twl6040_codec = NULL;
1219
1220         return 0;
1221 }
1222
1223 static struct platform_driver twl6040_codec_driver = {
1224         .driver = {
1225                 .name = "twl6040_codec",
1226                 .owner = THIS_MODULE,
1227         },
1228         .probe = twl6040_codec_probe,
1229         .remove = __devexit_p(twl6040_codec_remove),
1230 };
1231
1232 static int __init twl6040_codec_init(void)
1233 {
1234         return platform_driver_register(&twl6040_codec_driver);
1235 }
1236 module_init(twl6040_codec_init);
1237
1238 static void __exit twl6040_codec_exit(void)
1239 {
1240         platform_driver_unregister(&twl6040_codec_driver);
1241 }
1242 module_exit(twl6040_codec_exit);
1243
1244 MODULE_DESCRIPTION("ASoC TWL6040 codec driver");
1245 MODULE_AUTHOR("Misael Lopez Cruz");
1246 MODULE_LICENSE("GPL");