sound/soc/codecs/wm9090.c

   1 /*
   2  * ALSA SoC WM9090 driver
   3  *
   4  * Copyright 2009, 2010 Wolfson Microelectronics
   5  *
   6  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  */
  22
  23 #include <linux/module.h>
  24 #include <linux/errno.h>
  25 #include <linux/device.h>
  26 #include <linux/i2c.h>
  27 #include <linux/delay.h>
  28 #include <linux/slab.h>
  29 #include <sound/initval.h>
  30 #include <sound/soc.h>
  31 #include <sound/tlv.h>
  32 #include <sound/wm9090.h>
  33
  34 #include "wm9090.h"
  35
  36 static const u16 wm9090_reg_defaults[] = {
  37         0x9093,     /* R0   - Software Reset */
  38         0x0006,     /* R1   - Power Management (1) */
  39         0x6000,     /* R2   - Power Management (2) */
  40         0x0000,     /* R3   - Power Management (3) */
  41         0x0000,     /* R4 */
  42         0x0000,     /* R5 */
  43         0x01C0,     /* R6   - Clocking 1 */
  44         0x0000,     /* R7 */
  45         0x0000,     /* R8 */
  46         0x0000,     /* R9 */
  47         0x0000,     /* R10 */
  48         0x0000,     /* R11 */
  49         0x0000,     /* R12 */
  50         0x0000,     /* R13 */
  51         0x0000,     /* R14 */
  52         0x0000,     /* R15 */
  53         0x0000,     /* R16 */
  54         0x0000,     /* R17 */
  55         0x0000,     /* R18 */
  56         0x0000,     /* R19 */
  57         0x0000,     /* R20 */
  58         0x0000,     /* R21 */
  59         0x0003,     /* R22  - IN1 Line Control */
  60         0x0003,     /* R23  - IN2 Line Control */
  61         0x0083,     /* R24  - IN1 Line Input A Volume */
  62         0x0083,     /* R25  - IN1  Line Input B Volume */
  63         0x0083,     /* R26  - IN2 Line Input A Volume */
  64         0x0083,     /* R27  - IN2 Line Input B Volume */
  65         0x002D,     /* R28  - Left Output Volume */
  66         0x002D,     /* R29  - Right Output Volume */
  67         0x0000,     /* R30 */
  68         0x0000,     /* R31 */
  69         0x0000,     /* R32 */
  70         0x0000,     /* R33 */
  71         0x0100,     /* R34  - SPKMIXL Attenuation */
  72         0x0000,     /* R35 */
  73         0x0010,     /* R36  - SPKOUT Mixers */
  74         0x0140,     /* R37  - ClassD3 */
  75         0x0039,     /* R38  - Speaker Volume Left */
  76         0x0000,     /* R39 */
  77         0x0000,     /* R40 */
  78         0x0000,     /* R41 */
  79         0x0000,     /* R42 */
  80         0x0000,     /* R43 */
  81         0x0000,     /* R44 */
  82         0x0000,     /* R45  - Output Mixer1 */
  83         0x0000,     /* R46  - Output Mixer2 */
  84         0x0100,     /* R47  - Output Mixer3 */
  85         0x0100,     /* R48  - Output Mixer4 */
  86         0x0000,     /* R49 */
  87         0x0000,     /* R50 */
  88         0x0000,     /* R51 */
  89         0x0000,     /* R52 */
  90         0x0000,     /* R53 */
  91         0x0000,     /* R54  - Speaker Mixer */
  92         0x0000,     /* R55 */
  93         0x0000,     /* R56 */
  94         0x000D,     /* R57  - AntiPOP2 */
  95         0x0000,     /* R58 */
  96         0x0000,     /* R59 */
  97         0x0000,     /* R60 */
  98         0x0000,     /* R61 */
  99         0x0000,     /* R62 */
 100         0x0000,     /* R63 */
 101         0x0000,     /* R64 */
 102         0x0000,     /* R65 */
 103         0x0000,     /* R66 */
 104         0x0000,     /* R67 */
 105         0x0000,     /* R68 */
 106         0x0000,     /* R69 */
 107         0x0000,     /* R70  - Write Sequencer 0 */
 108         0x0000,     /* R71  - Write Sequencer 1 */
 109         0x0000,     /* R72  - Write Sequencer 2 */
 110         0x0000,     /* R73  - Write Sequencer 3 */
 111         0x0000,     /* R74  - Write Sequencer 4 */
 112         0x0000,     /* R75  - Write Sequencer 5 */
 113         0x1F25,     /* R76  - Charge Pump 1 */
 114         0x0000,     /* R77 */
 115         0x0000,     /* R78 */
 116         0x0000,     /* R79 */
 117         0x0000,     /* R80 */
 118         0x0000,     /* R81 */
 119         0x0000,     /* R82 */
 120         0x0000,     /* R83 */
 121         0x0000,     /* R84  - DC Servo 0 */
 122         0x054A,     /* R85  - DC Servo 1 */
 123         0x0000,     /* R86 */
 124         0x0000,     /* R87  - DC Servo 3 */
 125         0x0000,     /* R88  - DC Servo Readback 0 */
 126         0x0000,     /* R89  - DC Servo Readback 1 */
 127         0x0000,     /* R90  - DC Servo Readback 2 */
 128         0x0000,     /* R91 */
 129         0x0000,     /* R92 */
 130         0x0000,     /* R93 */
 131         0x0000,     /* R94 */
 132         0x0000,     /* R95 */
 133         0x0100,     /* R96  - Analogue HP 0 */
 134         0x0000,     /* R97 */
 135         0x8640,     /* R98  - AGC Control 0 */
 136         0xC000,     /* R99  - AGC Control 1 */
 137         0x0200,     /* R100 - AGC Control 2 */
 138 };
 139
 140 /* This struct is used to save the context */
 141 struct wm9090_priv {
 142         struct mutex mutex;
 143         struct wm9090_platform_data pdata;
 144         void *control_data;
 145 };
 146
 147 static int wm9090_volatile(unsigned int reg)
 148 {
 149         switch (reg) {
 150         case WM9090_SOFTWARE_RESET:
 151         case WM9090_DC_SERVO_0:
 152         case WM9090_DC_SERVO_READBACK_0:
 153         case WM9090_DC_SERVO_READBACK_1:
 154         case WM9090_DC_SERVO_READBACK_2:
 155                 return 1;
 156
 157         default:
 158                 return 0;
 159         }
 160 }
 161
 162 static void wait_for_dc_servo(struct snd_soc_codec *codec)
 163 {
 164         unsigned int reg;
 165         int count = 0;
 166
 167         dev_dbg(codec->dev, "Waiting for DC servo...\n");
 168         do {
 169                 count++;
 170                 msleep(1);
 171                 reg = snd_soc_read(codec, WM9090_DC_SERVO_READBACK_0);
 172                 dev_dbg(codec->dev, "DC servo status: %x\n", reg);
 173         } while ((reg & WM9090_DCS_CAL_COMPLETE_MASK)
 174                  != WM9090_DCS_CAL_COMPLETE_MASK && count < 1000);
 175
 176         if ((reg & WM9090_DCS_CAL_COMPLETE_MASK)
 177             != WM9090_DCS_CAL_COMPLETE_MASK)
 178                 dev_err(codec->dev, "Timed out waiting for DC Servo\n");
 179 }
 180
 181 static const unsigned int in_tlv[] = {
 182         TLV_DB_RANGE_HEAD(6),
 183         0, 0, TLV_DB_SCALE_ITEM(-600, 0, 0),
 184         1, 3, TLV_DB_SCALE_ITEM(-350, 350, 0),
 185         4, 6, TLV_DB_SCALE_ITEM(600, 600, 0),
 186 };
 187 static const unsigned int mix_tlv[] = {
 188         TLV_DB_RANGE_HEAD(4),
 189         0, 2, TLV_DB_SCALE_ITEM(-1200, 300, 0),
 190         3, 3, TLV_DB_SCALE_ITEM(0, 0, 0),
 191 };
 192 static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
 193 static const unsigned int spkboost_tlv[] = {
 194         TLV_DB_RANGE_HEAD(7),
 195         0, 6, TLV_DB_SCALE_ITEM(0, 150, 0),
 196         7, 7, TLV_DB_SCALE_ITEM(1200, 0, 0),
 197 };
 198
 199 static const struct snd_kcontrol_new wm9090_controls[] = {
 200 SOC_SINGLE_TLV("IN1A Volume", WM9090_IN1_LINE_INPUT_A_VOLUME, 0, 6, 0,
 201                in_tlv),
 202 SOC_SINGLE("IN1A Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 7, 1, 1),
 203 SOC_SINGLE("IN1A ZC Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 6, 1, 0),
 204
 205 SOC_SINGLE_TLV("IN2A Volume", WM9090_IN2_LINE_INPUT_A_VOLUME, 0, 6, 0,
 206                in_tlv),
 207 SOC_SINGLE("IN2A Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 7, 1, 1),
 208 SOC_SINGLE("IN2A ZC Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 6, 1, 0),
 209
 210 SOC_SINGLE("MIXOUTL Switch", WM9090_OUTPUT_MIXER3, 8, 1, 1),
 211 SOC_SINGLE_TLV("MIXOUTL IN1A Volume", WM9090_OUTPUT_MIXER3, 6, 3, 1,
 212                mix_tlv),
 213 SOC_SINGLE_TLV("MIXOUTL IN2A Volume", WM9090_OUTPUT_MIXER3, 2, 3, 1,
 214                mix_tlv),
 215
 216 SOC_SINGLE("MIXOUTR Switch", WM9090_OUTPUT_MIXER4, 8, 1, 1),
 217 SOC_SINGLE_TLV("MIXOUTR IN1A Volume", WM9090_OUTPUT_MIXER4, 6, 3, 1,
 218                mix_tlv),
 219 SOC_SINGLE_TLV("MIXOUTR IN2A Volume", WM9090_OUTPUT_MIXER4, 2, 3, 1,
 220                mix_tlv),
 221
 222 SOC_SINGLE("SPKMIX Switch", WM9090_SPKMIXL_ATTENUATION, 8, 1, 1),
 223 SOC_SINGLE_TLV("SPKMIX IN1A Volume", WM9090_SPKMIXL_ATTENUATION, 6, 3, 1,
 224                mix_tlv),
 225 SOC_SINGLE_TLV("SPKMIX IN2A Volume", WM9090_SPKMIXL_ATTENUATION, 2, 3, 1,
 226                mix_tlv),
 227
 228 SOC_DOUBLE_R_TLV("Headphone Volume", WM9090_LEFT_OUTPUT_VOLUME,
 229                  WM9090_RIGHT_OUTPUT_VOLUME, 0, 63, 0, out_tlv),
 230 SOC_DOUBLE_R("Headphone Switch", WM9090_LEFT_OUTPUT_VOLUME,
 231              WM9090_RIGHT_OUTPUT_VOLUME, 6, 1, 1),
 232 SOC_DOUBLE_R("Headphone ZC Switch", WM9090_LEFT_OUTPUT_VOLUME,
 233              WM9090_RIGHT_OUTPUT_VOLUME, 7, 1, 0),
 234
 235 SOC_SINGLE_TLV("Speaker Volume", WM9090_SPEAKER_VOLUME_LEFT, 0, 63, 0,
 236                out_tlv),
 237 SOC_SINGLE("Speaker Switch", WM9090_SPEAKER_VOLUME_LEFT, 6, 1, 1),
 238 SOC_SINGLE("Speaker ZC Switch", WM9090_SPEAKER_VOLUME_LEFT, 7, 1, 0),
 239 SOC_SINGLE_TLV("Speaker Boost Volume", WM9090_CLASSD3, 3, 7, 0, spkboost_tlv),
 240 };
 241
 242 static const struct snd_kcontrol_new wm9090_in1_se_controls[] = {
 243 SOC_SINGLE_TLV("IN1B Volume", WM9090_IN1_LINE_INPUT_B_VOLUME, 0, 6, 0,
 244                in_tlv),
 245 SOC_SINGLE("IN1B Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 7, 1, 1),
 246 SOC_SINGLE("IN1B ZC Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 6, 1, 0),
 247
 248 SOC_SINGLE_TLV("SPKMIX IN1B Volume", WM9090_SPKMIXL_ATTENUATION, 4, 3, 1,
 249                mix_tlv),
 250 SOC_SINGLE_TLV("MIXOUTL IN1B Volume", WM9090_OUTPUT_MIXER3, 4, 3, 1,
 251                mix_tlv),
 252 SOC_SINGLE_TLV("MIXOUTR IN1B Volume", WM9090_OUTPUT_MIXER4, 4, 3, 1,
 253                mix_tlv),
 254 };
 255
 256 static const struct snd_kcontrol_new wm9090_in2_se_controls[] = {
 257 SOC_SINGLE_TLV("IN2B Volume", WM9090_IN2_LINE_INPUT_B_VOLUME, 0, 6, 0,
 258                in_tlv),
 259 SOC_SINGLE("IN2B Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 7, 1, 1),
 260 SOC_SINGLE("IN2B ZC Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 6, 1, 0),
 261
 262 SOC_SINGLE_TLV("SPKMIX IN2B Volume", WM9090_SPKMIXL_ATTENUATION, 0, 3, 1,
 263                mix_tlv),
 264 SOC_SINGLE_TLV("MIXOUTL IN2B Volume", WM9090_OUTPUT_MIXER3, 0, 3, 1,
 265                mix_tlv),
 266 SOC_SINGLE_TLV("MIXOUTR IN2B Volume", WM9090_OUTPUT_MIXER4, 0, 3, 1,
 267                mix_tlv),
 268 };
 269
 270 static int hp_ev(struct snd_soc_dapm_widget *w,
 271                  struct snd_kcontrol *kcontrol, int event)
 272 {
 273         struct snd_soc_codec *codec = w->codec;
 274         unsigned int reg = snd_soc_read(codec, WM9090_ANALOGUE_HP_0);
 275
 276         switch (event) {
 277         case SND_SOC_DAPM_POST_PMU:
 278                 snd_soc_update_bits(codec, WM9090_CHARGE_PUMP_1,
 279                                     WM9090_CP_ENA, WM9090_CP_ENA);
 280
 281                 msleep(5);
 282
 283                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
 284                                     WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA,
 285                                     WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA);
 286
 287                 reg |= WM9090_HPOUT1L_DLY | WM9090_HPOUT1R_DLY;
 288                 snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg);
 289
 290                 /* Start the DC servo.  We don't currently use the
 291                  * ability to save the state since we don't have full
 292                  * control of the analogue paths and they can change
 293                  * DC offsets; see the WM8904 driver for an example of
 294                  * doing so.
 295                  */
 296                 snd_soc_write(codec, WM9090_DC_SERVO_0,
 297                               WM9090_DCS_ENA_CHAN_0 |
 298                               WM9090_DCS_ENA_CHAN_1 |
 299                               WM9090_DCS_TRIG_STARTUP_1 |
 300                               WM9090_DCS_TRIG_STARTUP_0);
 301                 wait_for_dc_servo(codec);
 302
 303                 reg |= WM9090_HPOUT1R_OUTP | WM9090_HPOUT1R_RMV_SHORT |
 304                         WM9090_HPOUT1L_OUTP | WM9090_HPOUT1L_RMV_SHORT;
 305                 snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg);
 306                 break;
 307
 308         case SND_SOC_DAPM_PRE_PMD:
 309                 reg &= ~(WM9090_HPOUT1L_RMV_SHORT |
 310                          WM9090_HPOUT1L_DLY |
 311                          WM9090_HPOUT1L_OUTP |
 312                          WM9090_HPOUT1R_RMV_SHORT |
 313                          WM9090_HPOUT1R_DLY |
 314                          WM9090_HPOUT1R_OUTP);
 315
 316                 snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg);
 317
 318                 snd_soc_write(codec, WM9090_DC_SERVO_0, 0);
 319
 320                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
 321                                     WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA,
 322                                     0);
 323
 324                 snd_soc_update_bits(codec, WM9090_CHARGE_PUMP_1,
 325                                     WM9090_CP_ENA, 0);
 326                 break;
 327         }
 328
 329         return 0;
 330 }
 331
 332 static const struct snd_kcontrol_new spkmix[] = {
 333 SOC_DAPM_SINGLE("IN1A Switch", WM9090_SPEAKER_MIXER, 6, 1, 0),
 334 SOC_DAPM_SINGLE("IN1B Switch", WM9090_SPEAKER_MIXER, 4, 1, 0),
 335 SOC_DAPM_SINGLE("IN2A Switch", WM9090_SPEAKER_MIXER, 2, 1, 0),
 336 SOC_DAPM_SINGLE("IN2B Switch", WM9090_SPEAKER_MIXER, 0, 1, 0),
 337 };
 338
 339 static const struct snd_kcontrol_new spkout[] = {
 340 SOC_DAPM_SINGLE("Mixer Switch", WM9090_SPKOUT_MIXERS, 4, 1, 0),
 341 };
 342
 343 static const struct snd_kcontrol_new mixoutl[] = {
 344 SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER1, 6, 1, 0),
 345 SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER1, 4, 1, 0),
 346 SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER1, 2, 1, 0),
 347 SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER1, 0, 1, 0),
 348 };
 349
 350 static const struct snd_kcontrol_new mixoutr[] = {
 351 SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER2, 6, 1, 0),
 352 SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER2, 4, 1, 0),
 353 SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER2, 2, 1, 0),
 354 SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER2, 0, 1, 0),
 355 };
 356
 357 static const struct snd_soc_dapm_widget wm9090_dapm_widgets[] = {
 358 SND_SOC_DAPM_INPUT("IN1+"),
 359 SND_SOC_DAPM_INPUT("IN1-"),
 360 SND_SOC_DAPM_INPUT("IN2+"),
 361 SND_SOC_DAPM_INPUT("IN2-"),
 362
 363 SND_SOC_DAPM_SUPPLY("OSC", WM9090_POWER_MANAGEMENT_1, 3, 0, NULL, 0),
 364
 365 SND_SOC_DAPM_PGA("IN1A PGA", WM9090_POWER_MANAGEMENT_2, 7, 0, NULL, 0),
 366 SND_SOC_DAPM_PGA("IN1B PGA", WM9090_POWER_MANAGEMENT_2, 6, 0, NULL, 0),
 367 SND_SOC_DAPM_PGA("IN2A PGA", WM9090_POWER_MANAGEMENT_2, 5, 0, NULL, 0),
 368 SND_SOC_DAPM_PGA("IN2B PGA", WM9090_POWER_MANAGEMENT_2, 4, 0, NULL, 0),
 369
 370 SND_SOC_DAPM_MIXER("SPKMIX", WM9090_POWER_MANAGEMENT_3, 3, 0,
 371                    spkmix, ARRAY_SIZE(spkmix)),
 372 SND_SOC_DAPM_MIXER("MIXOUTL", WM9090_POWER_MANAGEMENT_3, 5, 0,
 373                    mixoutl, ARRAY_SIZE(mixoutl)),
 374 SND_SOC_DAPM_MIXER("MIXOUTR", WM9090_POWER_MANAGEMENT_3, 4, 0,
 375                    mixoutr, ARRAY_SIZE(mixoutr)),
 376
 377 SND_SOC_DAPM_PGA_E("HP PGA", SND_SOC_NOPM, 0, 0, NULL, 0,
 378                    hp_ev, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
 379
 380 SND_SOC_DAPM_PGA("SPKPGA", WM9090_POWER_MANAGEMENT_3, 8, 0, NULL, 0),
 381 SND_SOC_DAPM_MIXER("SPKOUT", WM9090_POWER_MANAGEMENT_1, 12, 0,
 382                    spkout, ARRAY_SIZE(spkout)),
 383
 384 SND_SOC_DAPM_OUTPUT("HPR"),
 385 SND_SOC_DAPM_OUTPUT("HPL"),
 386 SND_SOC_DAPM_OUTPUT("Speaker"),
 387 };
 388
 389 static const struct snd_soc_dapm_route audio_map[] = {
 390         { "IN1A PGA", NULL, "IN1+" },
 391         { "IN2A PGA", NULL, "IN2+" },
 392
 393         { "SPKMIX", "IN1A Switch", "IN1A PGA" },
 394         { "SPKMIX", "IN2A Switch", "IN2A PGA" },
 395
 396         { "MIXOUTL", "IN1A Switch", "IN1A PGA" },
 397         { "MIXOUTL", "IN2A Switch", "IN2A PGA" },
 398
 399         { "MIXOUTR", "IN1A Switch", "IN1A PGA" },
 400         { "MIXOUTR", "IN2A Switch", "IN2A PGA" },
 401
 402         { "HP PGA", NULL, "OSC" },
 403         { "HP PGA", NULL, "MIXOUTL" },
 404         { "HP PGA", NULL, "MIXOUTR" },
 405
 406         { "HPL", NULL, "HP PGA" },
 407         { "HPR", NULL, "HP PGA" },
 408
 409         { "SPKPGA", NULL, "OSC" },
 410         { "SPKPGA", NULL, "SPKMIX" },
 411
 412         { "SPKOUT", "Mixer Switch", "SPKPGA" },
 413
 414         { "Speaker", NULL, "SPKOUT" },
 415 };
 416
 417 static const struct snd_soc_dapm_route audio_map_in1_se[] = {
 418         { "IN1B PGA", NULL, "IN1-" },
 419
 420         { "SPKMIX", "IN1B Switch", "IN1B PGA" },
 421         { "MIXOUTL", "IN1B Switch", "IN1B PGA" },
 422         { "MIXOUTR", "IN1B Switch", "IN1B PGA" },
 423 };
 424
 425 static const struct snd_soc_dapm_route audio_map_in1_diff[] = {
 426         { "IN1A PGA", NULL, "IN1-" },
 427 };
 428
 429 static const struct snd_soc_dapm_route audio_map_in2_se[] = {
 430         { "IN2B PGA", NULL, "IN2-" },
 431
 432         { "SPKMIX", "IN2B Switch", "IN2B PGA" },
 433         { "MIXOUTL", "IN2B Switch", "IN2B PGA" },
 434         { "MIXOUTR", "IN2B Switch", "IN2B PGA" },
 435 };
 436
 437 static const struct snd_soc_dapm_route audio_map_in2_diff[] = {
 438         { "IN2A PGA", NULL, "IN2-" },
 439 };
 440
 441 static int wm9090_add_controls(struct snd_soc_codec *codec)
 442 {
 443         struct wm9090_priv *wm9090 = snd_soc_codec_get_drvdata(codec);
 444         struct snd_soc_dapm_context *dapm = &codec->dapm;
 445         int i;
 446
 447         snd_soc_dapm_new_controls(dapm, wm9090_dapm_widgets,
 448                                   ARRAY_SIZE(wm9090_dapm_widgets));
 449
 450         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 451
 452         snd_soc_add_controls(codec, wm9090_controls,
 453                              ARRAY_SIZE(wm9090_controls));
 454
 455         if (wm9090->pdata.lin1_diff) {
 456                 snd_soc_dapm_add_routes(dapm, audio_map_in1_diff,
 457                                         ARRAY_SIZE(audio_map_in1_diff));
 458         } else {
 459                 snd_soc_dapm_add_routes(dapm, audio_map_in1_se,
 460                                         ARRAY_SIZE(audio_map_in1_se));
 461                 snd_soc_add_controls(codec, wm9090_in1_se_controls,
 462                                      ARRAY_SIZE(wm9090_in1_se_controls));
 463         }
 464
 465         if (wm9090->pdata.lin2_diff) {
 466                 snd_soc_dapm_add_routes(dapm, audio_map_in2_diff,
 467                                         ARRAY_SIZE(audio_map_in2_diff));
 468         } else {
 469                 snd_soc_dapm_add_routes(dapm, audio_map_in2_se,
 470                                         ARRAY_SIZE(audio_map_in2_se));
 471                 snd_soc_add_controls(codec, wm9090_in2_se_controls,
 472                                      ARRAY_SIZE(wm9090_in2_se_controls));
 473         }
 474
 475         if (wm9090->pdata.agc_ena) {
 476                 for (i = 0; i < ARRAY_SIZE(wm9090->pdata.agc); i++)
 477                         snd_soc_write(codec, WM9090_AGC_CONTROL_0 + i,
 478                                       wm9090->pdata.agc[i]);
 479                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_3,
 480                                     WM9090_AGC_ENA, WM9090_AGC_ENA);
 481         } else {
 482                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_3,
 483                                     WM9090_AGC_ENA, 0);
 484         }
 485
 486         return 0;
 487
 488 }
 489
 490 /*
 491  * The machine driver should call this from their set_bias_level; if there
 492  * isn't one then this can just be set as the set_bias_level function.
 493  */
 494 static int wm9090_set_bias_level(struct snd_soc_codec *codec,
 495                                  enum snd_soc_bias_level level)
 496 {
 497         u16 *reg_cache = codec->reg_cache;
 498         int i, ret;
 499
 500         switch (level) {
 501         case SND_SOC_BIAS_ON:
 502                 break;
 503
 504         case SND_SOC_BIAS_PREPARE:
 505                 snd_soc_update_bits(codec, WM9090_ANTIPOP2, WM9090_VMID_ENA,
 506                                     WM9090_VMID_ENA);
 507                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
 508                                     WM9090_BIAS_ENA |
 509                                     WM9090_VMID_RES_MASK,
 510                                     WM9090_BIAS_ENA |
 511                                     1 << WM9090_VMID_RES_SHIFT);
 512                 msleep(1);  /* Probably an overestimate */
 513                 break;
 514
 515         case SND_SOC_BIAS_STANDBY:
 516                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
 517                         /* Restore the register cache */
 518                         for (i = 1; i < codec->driver->reg_cache_size; i++) {
 519                                 if (reg_cache[i] == wm9090_reg_defaults[i])
 520                                         continue;
 521                                 if (wm9090_volatile(i))
 522                                         continue;
 523
 524                                 ret = snd_soc_write(codec, i, reg_cache[i]);
 525                                 if (ret != 0)
 526                                         dev_warn(codec->dev,
 527                                                  "Failed to restore register %d: %d\n",
 528                                                  i, ret);
 529                         }
 530                 }
 531
 532                 /* We keep VMID off during standby since the combination of
 533                  * ground referenced outputs and class D speaker mean that
 534                  * latency is not an issue.
 535                  */
 536                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
 537                                     WM9090_BIAS_ENA | WM9090_VMID_RES_MASK, 0);
 538                 snd_soc_update_bits(codec, WM9090_ANTIPOP2,
 539                                     WM9090_VMID_ENA, 0);
 540                 break;
 541
 542         case SND_SOC_BIAS_OFF:
 543                 break;
 544         }
 545
 546         codec->dapm.bias_level = level;
 547
 548         return 0;
 549 }
 550
 551 static int wm9090_probe(struct snd_soc_codec *codec)
 552 {
 553         struct wm9090_priv *wm9090 = snd_soc_codec_get_drvdata(codec);
 554         u16 *reg_cache = codec->reg_cache;
 555         int ret;
 556
 557         codec->control_data = wm9090->control_data;
 558         ret = snd_soc_codec_set_cache_io(codec, 8, 16, SND_SOC_I2C);
 559         if (ret != 0) {
 560                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 561                 return ret;
 562         }
 563
 564         ret = snd_soc_read(codec, WM9090_SOFTWARE_RESET);
 565         if (ret < 0)
 566                 return ret;
 567         if (ret != wm9090_reg_defaults[WM9090_SOFTWARE_RESET]) {
 568                 dev_err(codec->dev, "Device is not a WM9090, ID=%x\n", ret);
 569                 return -EINVAL;
 570         }
 571
 572         ret = snd_soc_write(codec, WM9090_SOFTWARE_RESET, 0);
 573         if (ret < 0)
 574                 return ret;
 575
 576         /* Configure some defaults; they will be written out when we
 577          * bring the bias up.
 578          */
 579         reg_cache[WM9090_IN1_LINE_INPUT_A_VOLUME] |= WM9090_IN1_VU
 580                 | WM9090_IN1A_ZC;
 581         reg_cache[WM9090_IN1_LINE_INPUT_B_VOLUME] |= WM9090_IN1_VU
 582                 | WM9090_IN1B_ZC;
 583         reg_cache[WM9090_IN2_LINE_INPUT_A_VOLUME] |= WM9090_IN2_VU
 584                 | WM9090_IN2A_ZC;
 585         reg_cache[WM9090_IN2_LINE_INPUT_B_VOLUME] |= WM9090_IN2_VU
 586                 | WM9090_IN2B_ZC;
 587         reg_cache[WM9090_SPEAKER_VOLUME_LEFT] |=
 588                 WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC;
 589         reg_cache[WM9090_LEFT_OUTPUT_VOLUME] |=
 590                 WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC;
 591         reg_cache[WM9090_RIGHT_OUTPUT_VOLUME] |=
 592                 WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC;
 593
 594         reg_cache[WM9090_CLOCKING_1] |= WM9090_TOCLK_ENA;
 595
 596         wm9090_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 597
 598         wm9090_add_controls(codec);
 599
 600         return 0;
 601 }
 602
 603 #ifdef CONFIG_PM
 604 static int wm9090_suspend(struct snd_soc_codec *codec, pm_message_t state)
 605 {
 606         wm9090_set_bias_level(codec, SND_SOC_BIAS_OFF);
 607
 608         return 0;
 609 }
 610
 611 static int wm9090_resume(struct snd_soc_codec *codec)
 612 {
 613         wm9090_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 614
 615         return 0;
 616 }
 617 #else
 618 #define wm9090_suspend NULL
 619 #define wm9090_resume NULL
 620 #endif
 621
 622 static int wm9090_remove(struct snd_soc_codec *codec)
 623 {
 624         wm9090_set_bias_level(codec, SND_SOC_BIAS_OFF);
 625
 626         return 0;
 627 }
 628
 629 static struct snd_soc_codec_driver soc_codec_dev_wm9090 = {
 630         .probe =        wm9090_probe,
 631         .remove =       wm9090_remove,
 632         .suspend =      wm9090_suspend,
 633         .resume =       wm9090_resume,
 634         .set_bias_level = wm9090_set_bias_level,
 635         .reg_cache_size = (WM9090_MAX_REGISTER + 1),
 636         .reg_word_size = sizeof(u16),
 637         .reg_cache_default = wm9090_reg_defaults,
 638         .volatile_register = wm9090_volatile,
 639 };
 640
 641 static int wm9090_i2c_probe(struct i2c_client *i2c,
 642                             const struct i2c_device_id *id)
 643 {
 644         struct wm9090_priv *wm9090;
 645         int ret;
 646
 647         wm9090 = kzalloc(sizeof(*wm9090), GFP_KERNEL);
 648         if (wm9090 == NULL) {
 649                 dev_err(&i2c->dev, "Can not allocate memory\n");
 650                 return -ENOMEM;
 651         }
 652
 653         if (i2c->dev.platform_data)
 654                 memcpy(&wm9090->pdata, i2c->dev.platform_data,
 655                        sizeof(wm9090->pdata));
 656
 657         i2c_set_clientdata(i2c, wm9090);
 658         wm9090->control_data = i2c;
 659         mutex_init(&wm9090->mutex);
 660
 661         ret =  snd_soc_register_codec(&i2c->dev,
 662                         &soc_codec_dev_wm9090,  NULL, 0);
 663         if (ret < 0)
 664                 kfree(wm9090);
 665         return ret;
 666 }
 667
 668 static int __devexit wm9090_i2c_remove(struct i2c_client *i2c)
 669 {
 670         struct wm9090_priv *wm9090 = i2c_get_clientdata(i2c);
 671
 672         snd_soc_unregister_codec(&i2c->dev);
 673         kfree(wm9090);
 674
 675         return 0;
 676 }
 677
 678 static const struct i2c_device_id wm9090_id[] = {
 679         { "wm9090", 0 },
 680         { }
 681 };
 682 MODULE_DEVICE_TABLE(i2c, wm9090_id);
 683
 684 static struct i2c_driver wm9090_i2c_driver = {
 685         .driver = {
 686                 .name = "wm9090-codec",
 687                 .owner = THIS_MODULE,
 688         },
 689         .probe = wm9090_i2c_probe,
 690         .remove = __devexit_p(wm9090_i2c_remove),
 691         .id_table = wm9090_id,
 692 };
 693
 694 static int __init wm9090_init(void)
 695 {
 696         return i2c_add_driver(&wm9090_i2c_driver);
 697 }
 698 module_init(wm9090_init);
 699
 700 static void __exit wm9090_exit(void)
 701 {
 702         i2c_del_driver(&wm9090_i2c_driver);
 703 }
 704 module_exit(wm9090_exit);
 705
 706 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 707 MODULE_DESCRIPTION("WM9090 ASoC driver");
 708 MODULE_LICENSE("GPL");