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   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 /* Left analog microphone selection */
 436 static const char *twl6040_amicl_texts[] =
 437         {"Headset Mic", "Main Mic", "Aux/FM Left", "Off"};
 438
 439 /* Right analog microphone selection */
 440 static const char *twl6040_amicr_texts[] =
 441         {"Headset Mic", "Sub Mic", "Aux/FM Right", "Off"};
 442
 443 static const struct soc_enum twl6040_enum[] = {
 444         SOC_ENUM_SINGLE(TWL6040_REG_MICLCTL, 3, 3, twl6040_amicl_texts),
 445         SOC_ENUM_SINGLE(TWL6040_REG_MICRCTL, 3, 3, twl6040_amicr_texts),
 446 };
 447
 448 static const struct snd_kcontrol_new amicl_control =
 449         SOC_DAPM_ENUM("Route", twl6040_enum[0]);
 450
 451 static const struct snd_kcontrol_new amicr_control =
 452         SOC_DAPM_ENUM("Route", twl6040_enum[1]);
 453
 454 /* Headset DAC playback switches */
 455 static const struct snd_kcontrol_new hsdacl_switch_controls =
 456         SOC_DAPM_SINGLE("Switch", TWL6040_REG_HSLCTL, 5, 1, 0);
 457
 458 static const struct snd_kcontrol_new hsdacr_switch_controls =
 459         SOC_DAPM_SINGLE("Switch", TWL6040_REG_HSRCTL, 5, 1, 0);
 460
 461 /* Handsfree DAC playback switches */
 462 static const struct snd_kcontrol_new hfdacl_switch_controls =
 463         SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFLCTL, 2, 1, 0);
 464
 465 static const struct snd_kcontrol_new hfdacr_switch_controls =
 466         SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFRCTL, 2, 1, 0);
 467
 468 /* Headset driver switches */
 469 static const struct snd_kcontrol_new hsl_driver_switch_controls =
 470         SOC_DAPM_SINGLE("Switch", TWL6040_REG_HSLCTL, 2, 1, 0);
 471
 472 static const struct snd_kcontrol_new hsr_driver_switch_controls =
 473         SOC_DAPM_SINGLE("Switch", TWL6040_REG_HSRCTL, 2, 1, 0);
 474
 475 /* Handsfree driver switches */
 476 static const struct snd_kcontrol_new hfl_driver_switch_controls =
 477         SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFLCTL, 4, 1, 0);
 478
 479 static const struct snd_kcontrol_new hfr_driver_switch_controls =
 480         SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFRCTL, 4, 1, 0);
 481
 482 static const struct snd_kcontrol_new twl6040_snd_controls[] = {
 483         /* Capture gains */
 484         SOC_DOUBLE_TLV("Capture Preamplifier Volume",
 485                 TWL6040_REG_MICGAIN, 6, 7, 1, 1, mic_preamp_tlv),
 486         SOC_DOUBLE_TLV("Capture Volume",
 487                 TWL6040_REG_MICGAIN, 0, 3, 4, 0, mic_amp_tlv),
 488
 489         /* Playback gains */
 490         SOC_DOUBLE_TLV("Headset Playback Volume",
 491                 TWL6040_REG_HSGAIN, 0, 4, 0xF, 1, hs_tlv),
 492         SOC_DOUBLE_R_TLV("Handsfree Playback Volume",
 493                 TWL6040_REG_HFLGAIN, TWL6040_REG_HFRGAIN, 0, 0x1D, 1, hf_tlv),
 494
 495 };
 496
 497 static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = {
 498         /* Inputs */
 499         SND_SOC_DAPM_INPUT("MAINMIC"),
 500         SND_SOC_DAPM_INPUT("HSMIC"),
 501         SND_SOC_DAPM_INPUT("SUBMIC"),
 502         SND_SOC_DAPM_INPUT("AFML"),
 503         SND_SOC_DAPM_INPUT("AFMR"),
 504
 505         /* Outputs */
 506         SND_SOC_DAPM_OUTPUT("HSOL"),
 507         SND_SOC_DAPM_OUTPUT("HSOR"),
 508         SND_SOC_DAPM_OUTPUT("HFL"),
 509         SND_SOC_DAPM_OUTPUT("HFR"),
 510
 511         /* Analog input muxes for the capture amplifiers */
 512         SND_SOC_DAPM_MUX("Analog Left Capture Route",
 513                         SND_SOC_NOPM, 0, 0, &amicl_control),
 514         SND_SOC_DAPM_MUX("Analog Right Capture Route",
 515                         SND_SOC_NOPM, 0, 0, &amicr_control),
 516
 517         /* Analog capture PGAs */
 518         SND_SOC_DAPM_PGA("MicAmpL",
 519                         TWL6040_REG_MICLCTL, 0, 0, NULL, 0),
 520         SND_SOC_DAPM_PGA("MicAmpR",
 521                         TWL6040_REG_MICRCTL, 0, 0, NULL, 0),
 522
 523         /* ADCs */
 524         SND_SOC_DAPM_ADC("ADC Left", "Left Front Capture",
 525                         TWL6040_REG_MICLCTL, 2, 0),
 526         SND_SOC_DAPM_ADC("ADC Right", "Right Front Capture",
 527                         TWL6040_REG_MICRCTL, 2, 0),
 528
 529         /* Microphone bias */
 530         SND_SOC_DAPM_MICBIAS("Headset Mic Bias",
 531                         TWL6040_REG_AMICBCTL, 0, 0),
 532         SND_SOC_DAPM_MICBIAS("Main Mic Bias",
 533                         TWL6040_REG_AMICBCTL, 4, 0),
 534         SND_SOC_DAPM_MICBIAS("Digital Mic1 Bias",
 535                         TWL6040_REG_DMICBCTL, 0, 0),
 536         SND_SOC_DAPM_MICBIAS("Digital Mic2 Bias",
 537                         TWL6040_REG_DMICBCTL, 4, 0),
 538
 539         /* DACs */
 540         SND_SOC_DAPM_DAC("HSDAC Left", "Headset Playback",
 541                         TWL6040_REG_HSLCTL, 0, 0),
 542         SND_SOC_DAPM_DAC("HSDAC Right", "Headset Playback",
 543                         TWL6040_REG_HSRCTL, 0, 0),
 544         SND_SOC_DAPM_DAC_E("HFDAC Left", "Handsfree Playback",
 545                         TWL6040_REG_HFLCTL, 0, 0,
 546                         twl6040_power_mode_event,
 547                         SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
 548         SND_SOC_DAPM_DAC_E("HFDAC Right", "Handsfree Playback",
 549                         TWL6040_REG_HFRCTL, 0, 0,
 550                         twl6040_power_mode_event,
 551                         SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
 552
 553         /* Analog playback switches */
 554         SND_SOC_DAPM_SWITCH("HSDAC Left Playback",
 555                         SND_SOC_NOPM, 0, 0, &hsdacl_switch_controls),
 556         SND_SOC_DAPM_SWITCH("HSDAC Right Playback",
 557                         SND_SOC_NOPM, 0, 0, &hsdacr_switch_controls),
 558         SND_SOC_DAPM_SWITCH("HFDAC Left Playback",
 559                         SND_SOC_NOPM, 0, 0, &hfdacl_switch_controls),
 560         SND_SOC_DAPM_SWITCH("HFDAC Right Playback",
 561                         SND_SOC_NOPM, 0, 0, &hfdacr_switch_controls),
 562
 563         SND_SOC_DAPM_SWITCH("Headset Left Driver",
 564                         SND_SOC_NOPM, 0, 0, &hsl_driver_switch_controls),
 565         SND_SOC_DAPM_SWITCH("Headset Right Driver",
 566                         SND_SOC_NOPM, 0, 0, &hsr_driver_switch_controls),
 567         SND_SOC_DAPM_SWITCH_E("Handsfree Left Driver",
 568                         SND_SOC_NOPM, 0, 0, &hfl_driver_switch_controls,
 569                         twl6040_power_mode_event,
 570                         SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
 571         SND_SOC_DAPM_SWITCH_E("Handsfree Right Driver",
 572                         SND_SOC_NOPM, 0, 0, &hfr_driver_switch_controls,
 573                         twl6040_power_mode_event,
 574                         SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
 575
 576         /* Analog playback PGAs */
 577         SND_SOC_DAPM_PGA("HFDAC Left PGA",
 578                         TWL6040_REG_HFLCTL, 1, 0, NULL, 0),
 579         SND_SOC_DAPM_PGA("HFDAC Right PGA",
 580                         TWL6040_REG_HFRCTL, 1, 0, NULL, 0),
 581
 582 };
 583
 584 static const struct snd_soc_dapm_route intercon[] = {
 585         /* Capture path */
 586         {"Analog Left Capture Route", "Headset Mic", "HSMIC"},
 587         {"Analog Left Capture Route", "Main Mic", "MAINMIC"},
 588         {"Analog Left Capture Route", "Aux/FM Left", "AFML"},
 589
 590         {"Analog Right Capture Route", "Headset Mic", "HSMIC"},
 591         {"Analog Right Capture Route", "Sub Mic", "SUBMIC"},
 592         {"Analog Right Capture Route", "Aux/FM Right", "AFMR"},
 593
 594         {"MicAmpL", NULL, "Analog Left Capture Route"},
 595         {"MicAmpR", NULL, "Analog Right Capture Route"},
 596
 597         {"ADC Left", NULL, "MicAmpL"},
 598         {"ADC Right", NULL, "MicAmpR"},
 599
 600         /* Headset playback path */
 601         {"HSDAC Left Playback", "Switch", "HSDAC Left"},
 602         {"HSDAC Right Playback", "Switch", "HSDAC Right"},
 603
 604         {"Headset Left Driver", "Switch", "HSDAC Left Playback"},
 605         {"Headset Right Driver", "Switch", "HSDAC Right Playback"},
 606
 607         {"HSOL", NULL, "Headset Left Driver"},
 608         {"HSOR", NULL, "Headset Right Driver"},
 609
 610         /* Handsfree playback path */
 611         {"HFDAC Left Playback", "Switch", "HFDAC Left"},
 612         {"HFDAC Right Playback", "Switch", "HFDAC Right"},
 613
 614         {"HFDAC Left PGA", NULL, "HFDAC Left Playback"},
 615         {"HFDAC Right PGA", NULL, "HFDAC Right Playback"},
 616
 617         {"Handsfree Left Driver", "Switch", "HFDAC Left PGA"},
 618         {"Handsfree Right Driver", "Switch", "HFDAC Right PGA"},
 619
 620         {"HFL", NULL, "Handsfree Left Driver"},
 621         {"HFR", NULL, "Handsfree Right Driver"},
 622 };
 623
 624 static int twl6040_add_widgets(struct snd_soc_codec *codec)
 625 {
 626         snd_soc_dapm_new_controls(codec, twl6040_dapm_widgets,
 627                                  ARRAY_SIZE(twl6040_dapm_widgets));
 628
 629         snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
 630
 631         snd_soc_dapm_new_widgets(codec);
 632
 633         return 0;
 634 }
 635
 636 static int twl6040_power_up_completion(struct snd_soc_codec *codec,
 637                                         int naudint)
 638 {
 639         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 640         int time_left;
 641         u8 intid;
 642
 643         time_left = wait_for_completion_timeout(&priv->ready,
 644                                 msecs_to_jiffies(48));
 645
 646         if (!time_left) {
 647                 twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &intid,
 648                                                         TWL6040_REG_INTID);
 649                 if (!(intid & TWL6040_READYINT)) {
 650                         dev_err(codec->dev, "timeout waiting for READYINT\n");
 651                         return -ETIMEDOUT;
 652                 }
 653         }
 654
 655         priv->codec_powered = 1;
 656
 657         return 0;
 658 }
 659
 660 static int twl6040_set_bias_level(struct snd_soc_codec *codec,
 661                                 enum snd_soc_bias_level level)
 662 {
 663         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 664         int audpwron = priv->audpwron;
 665         int naudint = priv->naudint;
 666         int ret;
 667
 668         switch (level) {
 669         case SND_SOC_BIAS_ON:
 670                 break;
 671         case SND_SOC_BIAS_PREPARE:
 672                 break;
 673         case SND_SOC_BIAS_STANDBY:
 674                 if (priv->codec_powered)
 675                         break;
 676
 677                 if (gpio_is_valid(audpwron)) {
 678                         /* use AUDPWRON line */
 679                         gpio_set_value(audpwron, 1);
 680
 681                         /* wait for power-up completion */
 682                         ret = twl6040_power_up_completion(codec, naudint);
 683                         if (ret)
 684                                 return ret;
 685
 686                         /* sync registers updated during power-up sequence */
 687                         twl6040_read_reg_volatile(codec, TWL6040_REG_NCPCTL);
 688                         twl6040_read_reg_volatile(codec, TWL6040_REG_LDOCTL);
 689                         twl6040_read_reg_volatile(codec, TWL6040_REG_LPPLLCTL);
 690                 } else {
 691                         /* use manual power-up sequence */
 692                         twl6040_power_up(codec);
 693                         priv->codec_powered = 1;
 694                 }
 695
 696                 /* initialize vdd/vss registers with reg_cache */
 697                 twl6040_init_vdd_regs(codec);
 698                 break;
 699         case SND_SOC_BIAS_OFF:
 700                 if (!priv->codec_powered)
 701                         break;
 702
 703                 if (gpio_is_valid(audpwron)) {
 704                         /* use AUDPWRON line */
 705                         gpio_set_value(audpwron, 0);
 706
 707                         /* power-down sequence latency */
 708                         udelay(500);
 709
 710                         /* sync registers updated during power-down sequence */
 711                         twl6040_read_reg_volatile(codec, TWL6040_REG_NCPCTL);
 712                         twl6040_read_reg_volatile(codec, TWL6040_REG_LDOCTL);
 713                         twl6040_write_reg_cache(codec, TWL6040_REG_LPPLLCTL,
 714                                                 0x00);
 715                 } else {
 716                         /* use manual power-down sequence */
 717                         twl6040_power_down(codec);
 718                 }
 719
 720                 priv->codec_powered = 0;
 721                 break;
 722         }
 723
 724         codec->bias_level = level;
 725
 726         return 0;
 727 }
 728
 729 /* set of rates for each pll: low-power and high-performance */
 730
 731 static unsigned int lp_rates[] = {
 732         88200,
 733         96000,
 734 };
 735
 736 static struct snd_pcm_hw_constraint_list lp_constraints = {
 737         .count  = ARRAY_SIZE(lp_rates),
 738         .list   = lp_rates,
 739 };
 740
 741 static unsigned int hp_rates[] = {
 742         96000,
 743 };
 744
 745 static struct snd_pcm_hw_constraint_list hp_constraints = {
 746         .count  = ARRAY_SIZE(hp_rates),
 747         .list   = hp_rates,
 748 };
 749
 750 static int twl6040_startup(struct snd_pcm_substream *substream,
 751                         struct snd_soc_dai *dai)
 752 {
 753         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 754         struct snd_soc_device *socdev = rtd->socdev;
 755         struct snd_soc_codec *codec = socdev->card->codec;
 756         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 757
 758         if (!priv->sysclk) {
 759                 dev_err(codec->dev,
 760                         "no mclk configured, call set_sysclk() on init\n");
 761                 return -EINVAL;
 762         }
 763
 764         /*
 765          * capture is not supported at 17.64 MHz,
 766          * it's reserved for headset low-power playback scenario
 767          */
 768         if ((priv->sysclk == 17640000) && substream->stream) {
 769                 dev_err(codec->dev,
 770                         "capture mode is not supported at %dHz\n",
 771                         priv->sysclk);
 772                 return -EINVAL;
 773         }
 774
 775         snd_pcm_hw_constraint_list(substream->runtime, 0,
 776                                 SNDRV_PCM_HW_PARAM_RATE,
 777                                 priv->sysclk_constraints);
 778
 779         return 0;
 780 }
 781
 782 static int twl6040_hw_params(struct snd_pcm_substream *substream,
 783                         struct snd_pcm_hw_params *params,
 784                         struct snd_soc_dai *dai)
 785 {
 786         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 787         struct snd_soc_device *socdev = rtd->socdev;
 788         struct snd_soc_codec *codec = socdev->card->codec;
 789         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 790         u8 lppllctl;
 791         int rate;
 792
 793         /* nothing to do for high-perf pll, it supports only 48 kHz */
 794         if (priv->pll == TWL6040_HPPLL_ID)
 795                 return 0;
 796
 797         lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
 798
 799         rate = params_rate(params);
 800         switch (rate) {
 801         case 88200:
 802                 lppllctl |= TWL6040_LPLLFIN;
 803                 priv->sysclk = 17640000;
 804                 break;
 805         case 96000:
 806                 lppllctl &= ~TWL6040_LPLLFIN;
 807                 priv->sysclk = 19200000;
 808                 break;
 809         default:
 810                 dev_err(codec->dev, "unsupported rate %d\n", rate);
 811                 return -EINVAL;
 812         }
 813
 814         twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 815
 816         return 0;
 817 }
 818
 819 static int twl6040_trigger(struct snd_pcm_substream *substream,
 820                         int cmd, struct snd_soc_dai *dai)
 821 {
 822         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 823         struct snd_soc_device *socdev = rtd->socdev;
 824         struct snd_soc_codec *codec = socdev->card->codec;
 825         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 826
 827         switch (cmd) {
 828         case SNDRV_PCM_TRIGGER_START:
 829         case SNDRV_PCM_TRIGGER_RESUME:
 830                 /*
 831                  * low-power playback mode is restricted
 832                  * for headset path only
 833                  */
 834                 if ((priv->sysclk == 17640000) && priv->non_lp) {
 835                         dev_err(codec->dev,
 836                                 "some enabled paths aren't supported at %dHz\n",
 837                                 priv->sysclk);
 838                         return -EPERM;
 839                 }
 840                 break;
 841         default:
 842                 break;
 843         }
 844
 845         return 0;
 846 }
 847
 848 static int twl6040_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 849                 int clk_id, unsigned int freq, int dir)
 850 {
 851         struct snd_soc_codec *codec = codec_dai->codec;
 852         struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
 853         u8 hppllctl, lppllctl;
 854
 855         hppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_HPPLLCTL);
 856         lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
 857
 858         switch (clk_id) {
 859         case TWL6040_SYSCLK_SEL_LPPLL:
 860                 switch (freq) {
 861                 case 32768:
 862                         /* headset dac and driver must be in low-power mode */
 863                         headset_power_mode(codec, 0);
 864
 865                         /* clk32k input requires low-power pll */
 866                         lppllctl |= TWL6040_LPLLENA;
 867                         twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 868                         mdelay(5);
 869                         lppllctl &= ~TWL6040_HPLLSEL;
 870                         twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 871                         hppllctl &= ~TWL6040_HPLLENA;
 872                         twl6040_write(codec, TWL6040_REG_HPPLLCTL, hppllctl);
 873                         break;
 874                 default:
 875                         dev_err(codec->dev, "unknown mclk freq %d\n", freq);
 876                         return -EINVAL;
 877                 }
 878
 879                 /* lppll divider */
 880                 switch (priv->sysclk) {
 881                 case 17640000:
 882                         lppllctl |= TWL6040_LPLLFIN;
 883                         break;
 884                 case 19200000:
 885                         lppllctl &= ~TWL6040_LPLLFIN;
 886                         break;
 887                 default:
 888                         /* sysclk not yet configured */
 889                         lppllctl &= ~TWL6040_LPLLFIN;
 890                         priv->sysclk = 19200000;
 891                         break;
 892                 }
 893
 894                 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 895
 896                 priv->pll = TWL6040_LPPLL_ID;
 897                 priv->sysclk_constraints = &lp_constraints;
 898                 break;
 899         case TWL6040_SYSCLK_SEL_HPPLL:
 900                 hppllctl &= ~TWL6040_MCLK_MSK;
 901
 902                 switch (freq) {
 903                 case 12000000:
 904                         /* mclk input, pll enabled */
 905                         hppllctl |= TWL6040_MCLK_12000KHZ |
 906                                     TWL6040_HPLLSQRBP |
 907                                     TWL6040_HPLLENA;
 908                         break;
 909                 case 19200000:
 910                         /* mclk input, pll disabled */
 911                         hppllctl |= TWL6040_MCLK_19200KHZ |
 912                                     TWL6040_HPLLSQRBP |
 913                                     TWL6040_HPLLBP;
 914                         break;
 915                 case 26000000:
 916                         /* mclk input, pll enabled */
 917                         hppllctl |= TWL6040_MCLK_26000KHZ |
 918                                     TWL6040_HPLLSQRBP |
 919                                     TWL6040_HPLLENA;
 920                         break;
 921                 case 38400000:
 922                         /* clk slicer, pll disabled */
 923                         hppllctl |= TWL6040_MCLK_38400KHZ |
 924                                     TWL6040_HPLLSQRENA |
 925                                     TWL6040_HPLLBP;
 926                         break;
 927                 default:
 928                         dev_err(codec->dev, "unknown mclk freq %d\n", freq);
 929                         return -EINVAL;
 930                 }
 931
 932                 /* headset dac and driver must be in high-performance mode */
 933                 headset_power_mode(codec, 1);
 934
 935                 twl6040_write(codec, TWL6040_REG_HPPLLCTL, hppllctl);
 936                 udelay(500);
 937                 lppllctl |= TWL6040_HPLLSEL;
 938                 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 939                 lppllctl &= ~TWL6040_LPLLENA;
 940                 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
 941
 942                 /* high-performance pll can provide only 19.2 MHz */
 943                 priv->pll = TWL6040_HPPLL_ID;
 944                 priv->sysclk = 19200000;
 945                 priv->sysclk_constraints = &hp_constraints;
 946                 break;
 947         default:
 948                 dev_err(codec->dev, "unknown clk_id %d\n", clk_id);
 949                 return -EINVAL;
 950         }
 951
 952         return 0;
 953 }
 954
 955 static struct snd_soc_dai_ops twl6040_dai_ops = {
 956         .startup        = twl6040_startup,
 957         .hw_params      = twl6040_hw_params,
 958         .trigger        = twl6040_trigger,
 959         .set_sysclk     = twl6040_set_dai_sysclk,
 960 };
 961
 962 struct snd_soc_dai twl6040_dai = {
 963         .name = "twl6040",
 964         .playback = {
 965                 .stream_name = "Playback",
 966                 .channels_min = 1,
 967                 .channels_max = 4,
 968                 .rates = TWL6040_RATES,
 969                 .formats = TWL6040_FORMATS,
 970         },
 971         .capture = {
 972                 .stream_name = "Capture",
 973                 .channels_min = 1,
 974                 .channels_max = 2,
 975                 .rates = TWL6040_RATES,
 976                 .formats = TWL6040_FORMATS,
 977         },
 978         .ops = &twl6040_dai_ops,
 979 };
 980 EXPORT_SYMBOL_GPL(twl6040_dai);
 981
 982 #ifdef CONFIG_PM
 983 static int twl6040_suspend(struct platform_device *pdev, pm_message_t state)
 984 {
 985         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 986         struct snd_soc_codec *codec = socdev->card->codec;
 987
 988         twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
 989
 990         return 0;
 991 }
 992
 993 static int twl6040_resume(struct platform_device *pdev)
 994 {
 995         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 996         struct snd_soc_codec *codec = socdev->card->codec;
 997
 998         twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 999         twl6040_set_bias_level(codec, codec->suspend_bias_level);
1000
1001         return 0;
1002 }
1003 #else
1004 #define twl6040_suspend NULL
1005 #define twl6040_resume NULL
1006 #endif
1007
1008 static struct snd_soc_codec *twl6040_codec;
1009
1010 static int twl6040_probe(struct platform_device *pdev)
1011 {
1012         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1013         struct snd_soc_codec *codec;
1014         int ret = 0;
1015
1016         BUG_ON(!twl6040_codec);
1017
1018         codec = twl6040_codec;
1019         socdev->card->codec = codec;
1020
1021         /* register pcms */
1022         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
1023         if (ret < 0) {
1024                 dev_err(&pdev->dev, "failed to create pcms\n");
1025                 return ret;
1026         }
1027
1028         snd_soc_add_controls(codec, twl6040_snd_controls,
1029                                 ARRAY_SIZE(twl6040_snd_controls));
1030         twl6040_add_widgets(codec);
1031
1032         if (ret < 0) {
1033                 dev_err(&pdev->dev, "failed to register card\n");
1034                 goto card_err;
1035         }
1036
1037         return ret;
1038
1039 card_err:
1040         snd_soc_free_pcms(socdev);
1041         snd_soc_dapm_free(socdev);
1042         return ret;
1043 }
1044
1045 static int twl6040_remove(struct platform_device *pdev)
1046 {
1047         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1048         struct snd_soc_codec *codec = socdev->card->codec;
1049
1050         twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
1051         snd_soc_free_pcms(socdev);
1052         snd_soc_dapm_free(socdev);
1053         kfree(codec);
1054
1055         return 0;
1056 }
1057
1058 struct snd_soc_codec_device soc_codec_dev_twl6040 = {
1059         .probe = twl6040_probe,
1060         .remove = twl6040_remove,
1061         .suspend = twl6040_suspend,
1062         .resume = twl6040_resume,
1063 };
1064 EXPORT_SYMBOL_GPL(soc_codec_dev_twl6040);
1065
1066 static int __devinit twl6040_codec_probe(struct platform_device *pdev)
1067 {
1068         struct twl4030_codec_data *twl_codec = pdev->dev.platform_data;
1069         struct snd_soc_codec *codec;
1070         struct twl6040_data *priv;
1071         int audpwron, naudint;
1072         int ret = 0;
1073
1074         priv = kzalloc(sizeof(struct twl6040_data), GFP_KERNEL);
1075         if (priv == NULL)
1076                 return -ENOMEM;
1077
1078         if (twl_codec) {
1079                 audpwron = twl_codec->audpwron_gpio;
1080                 naudint = twl_codec->naudint_irq;
1081         } else {
1082                 audpwron = -EINVAL;
1083                 naudint = 0;
1084         }
1085
1086         priv->audpwron = audpwron;
1087         priv->naudint = naudint;
1088
1089         codec = &priv->codec;
1090         codec->dev = &pdev->dev;
1091         twl6040_dai.dev = &pdev->dev;
1092
1093         codec->name = "twl6040";
1094         codec->owner = THIS_MODULE;
1095         codec->read = twl6040_read_reg_cache;
1096         codec->write = twl6040_write;
1097         codec->set_bias_level = twl6040_set_bias_level;
1098         snd_soc_codec_set_drvdata(codec, priv);
1099         codec->dai = &twl6040_dai;
1100         codec->num_dai = 1;
1101         codec->reg_cache_size = ARRAY_SIZE(twl6040_reg);
1102         codec->reg_cache = kmemdup(twl6040_reg, sizeof(twl6040_reg),
1103                                         GFP_KERNEL);
1104         if (codec->reg_cache == NULL) {
1105                 ret = -ENOMEM;
1106                 goto cache_err;
1107         }
1108
1109         mutex_init(&codec->mutex);
1110         INIT_LIST_HEAD(&codec->dapm_widgets);
1111         INIT_LIST_HEAD(&codec->dapm_paths);
1112         init_completion(&priv->ready);
1113
1114         if (gpio_is_valid(audpwron)) {
1115                 ret = gpio_request(audpwron, "audpwron");
1116                 if (ret)
1117                         goto gpio1_err;
1118
1119                 ret = gpio_direction_output(audpwron, 0);
1120                 if (ret)
1121                         goto gpio2_err;
1122
1123                 priv->codec_powered = 0;
1124         }
1125
1126         if (naudint) {
1127                 /* audio interrupt */
1128                 ret = request_threaded_irq(naudint, NULL,
1129                                 twl6040_naudint_handler,
1130                                 IRQF_TRIGGER_LOW | IRQF_ONESHOT,
1131                                 "twl6040_codec", codec);
1132                 if (ret)
1133                         goto gpio2_err;
1134         } else {
1135                 if (gpio_is_valid(audpwron)) {
1136                         /* enable only codec ready interrupt */
1137                         twl6040_write_reg_cache(codec, TWL6040_REG_INTMR,
1138                                         ~TWL6040_READYMSK & TWL6040_ALLINT_MSK);
1139                 } else {
1140                         /* no interrupts at all */
1141                         twl6040_write_reg_cache(codec, TWL6040_REG_INTMR,
1142                                                 TWL6040_ALLINT_MSK);
1143                 }
1144         }
1145
1146         /* init vio registers */
1147         twl6040_init_vio_regs(codec);
1148
1149         /* power on device */
1150         ret = twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1151         if (ret)
1152                 goto irq_err;
1153
1154         ret = snd_soc_register_codec(codec);
1155         if (ret)
1156                 goto reg_err;
1157
1158         twl6040_codec = codec;
1159
1160         ret = snd_soc_register_dai(&twl6040_dai);
1161         if (ret)
1162                 goto dai_err;
1163
1164         return 0;
1165
1166 dai_err:
1167         snd_soc_unregister_codec(codec);
1168         twl6040_codec = NULL;
1169 reg_err:
1170         twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
1171 irq_err:
1172         if (naudint)
1173                 free_irq(naudint, codec);
1174 gpio2_err:
1175         if (gpio_is_valid(audpwron))
1176                 gpio_free(audpwron);
1177 gpio1_err:
1178         kfree(codec->reg_cache);
1179 cache_err:
1180         kfree(priv);
1181         return ret;
1182 }
1183
1184 static int __devexit twl6040_codec_remove(struct platform_device *pdev)
1185 {
1186         struct twl6040_data *priv = snd_soc_codec_get_drvdata(twl6040_codec);
1187         int audpwron = priv->audpwron;
1188         int naudint = priv->naudint;
1189
1190         if (gpio_is_valid(audpwron))
1191                 gpio_free(audpwron);
1192
1193         if (naudint)
1194                 free_irq(naudint, twl6040_codec);
1195
1196         snd_soc_unregister_dai(&twl6040_dai);
1197         snd_soc_unregister_codec(twl6040_codec);
1198
1199         kfree(twl6040_codec);
1200         twl6040_codec = NULL;
1201
1202         return 0;
1203 }
1204
1205 static struct platform_driver twl6040_codec_driver = {
1206         .driver = {
1207                 .name = "twl6040_codec",
1208                 .owner = THIS_MODULE,
1209         },
1210         .probe = twl6040_codec_probe,
1211         .remove = __devexit_p(twl6040_codec_remove),
1212 };
1213
1214 static int __init twl6040_codec_init(void)
1215 {
1216         return platform_driver_register(&twl6040_codec_driver);
1217 }
1218 module_init(twl6040_codec_init);
1219
1220 static void __exit twl6040_codec_exit(void)
1221 {
1222         platform_driver_unregister(&twl6040_codec_driver);
1223 }
1224 module_exit(twl6040_codec_exit);
1225
1226 MODULE_DESCRIPTION("ASoC TWL6040 codec driver");
1227 MODULE_AUTHOR("Misael Lopez Cruz");
1228 MODULE_LICENSE("GPL");