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 wm9090_platform_data pdata;
 143         void *control_data;
 144 };
 145
 146 static int wm9090_volatile(struct snd_soc_codec *codec, unsigned int reg)
 147 {
 148         switch (reg) {
 149         case WM9090_SOFTWARE_RESET:
 150         case WM9090_DC_SERVO_0:
 151         case WM9090_DC_SERVO_READBACK_0:
 152         case WM9090_DC_SERVO_READBACK_1:
 153         case WM9090_DC_SERVO_READBACK_2:
 154                 return 1;
 155
 156         default:
 157                 return 0;
 158         }
 159 }
 160
 161 static void wait_for_dc_servo(struct snd_soc_codec *codec)
 162 {
 163         unsigned int reg;
 164         int count = 0;
 165
 166         dev_dbg(codec->dev, "Waiting for DC servo...\n");
 167         do {
 168                 count++;
 169                 msleep(1);
 170                 reg = snd_soc_read(codec, WM9090_DC_SERVO_READBACK_0);
 171                 dev_dbg(codec->dev, "DC servo status: %x\n", reg);
 172         } while ((reg & WM9090_DCS_CAL_COMPLETE_MASK)
 173                  != WM9090_DCS_CAL_COMPLETE_MASK && count < 1000);
 174
 175         if ((reg & WM9090_DCS_CAL_COMPLETE_MASK)
 176             != WM9090_DCS_CAL_COMPLETE_MASK)
 177                 dev_err(codec->dev, "Timed out waiting for DC Servo\n");
 178 }
 179
 180 static const unsigned int in_tlv[] = {
 181         TLV_DB_RANGE_HEAD(6),
 182         0, 0, TLV_DB_SCALE_ITEM(-600, 0, 0),
 183         1, 3, TLV_DB_SCALE_ITEM(-350, 350, 0),
 184         4, 6, TLV_DB_SCALE_ITEM(600, 600, 0),
 185 };
 186 static const unsigned int mix_tlv[] = {
 187         TLV_DB_RANGE_HEAD(4),
 188         0, 2, TLV_DB_SCALE_ITEM(-1200, 300, 0),
 189         3, 3, TLV_DB_SCALE_ITEM(0, 0, 0),
 190 };
 191 static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
 192 static const unsigned int spkboost_tlv[] = {
 193         TLV_DB_RANGE_HEAD(7),
 194         0, 6, TLV_DB_SCALE_ITEM(0, 150, 0),
 195         7, 7, TLV_DB_SCALE_ITEM(1200, 0, 0),
 196 };
 197
 198 static const struct snd_kcontrol_new wm9090_controls[] = {
 199 SOC_SINGLE_TLV("IN1A Volume", WM9090_IN1_LINE_INPUT_A_VOLUME, 0, 6, 0,
 200                in_tlv),
 201 SOC_SINGLE("IN1A Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 7, 1, 1),
 202 SOC_SINGLE("IN1A ZC Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 6, 1, 0),
 203
 204 SOC_SINGLE_TLV("IN2A Volume", WM9090_IN2_LINE_INPUT_A_VOLUME, 0, 6, 0,
 205                in_tlv),
 206 SOC_SINGLE("IN2A Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 7, 1, 1),
 207 SOC_SINGLE("IN2A ZC Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 6, 1, 0),
 208
 209 SOC_SINGLE("MIXOUTL Switch", WM9090_OUTPUT_MIXER3, 8, 1, 1),
 210 SOC_SINGLE_TLV("MIXOUTL IN1A Volume", WM9090_OUTPUT_MIXER3, 6, 3, 1,
 211                mix_tlv),
 212 SOC_SINGLE_TLV("MIXOUTL IN2A Volume", WM9090_OUTPUT_MIXER3, 2, 3, 1,
 213                mix_tlv),
 214
 215 SOC_SINGLE("MIXOUTR Switch", WM9090_OUTPUT_MIXER4, 8, 1, 1),
 216 SOC_SINGLE_TLV("MIXOUTR IN1A Volume", WM9090_OUTPUT_MIXER4, 6, 3, 1,
 217                mix_tlv),
 218 SOC_SINGLE_TLV("MIXOUTR IN2A Volume", WM9090_OUTPUT_MIXER4, 2, 3, 1,
 219                mix_tlv),
 220
 221 SOC_SINGLE("SPKMIX Switch", WM9090_SPKMIXL_ATTENUATION, 8, 1, 1),
 222 SOC_SINGLE_TLV("SPKMIX IN1A Volume", WM9090_SPKMIXL_ATTENUATION, 6, 3, 1,
 223                mix_tlv),
 224 SOC_SINGLE_TLV("SPKMIX IN2A Volume", WM9090_SPKMIXL_ATTENUATION, 2, 3, 1,
 225                mix_tlv),
 226
 227 SOC_DOUBLE_R_TLV("Headphone Volume", WM9090_LEFT_OUTPUT_VOLUME,
 228                  WM9090_RIGHT_OUTPUT_VOLUME, 0, 63, 0, out_tlv),
 229 SOC_DOUBLE_R("Headphone Switch", WM9090_LEFT_OUTPUT_VOLUME,
 230              WM9090_RIGHT_OUTPUT_VOLUME, 6, 1, 1),
 231 SOC_DOUBLE_R("Headphone ZC Switch", WM9090_LEFT_OUTPUT_VOLUME,
 232              WM9090_RIGHT_OUTPUT_VOLUME, 7, 1, 0),
 233
 234 SOC_SINGLE_TLV("Speaker Volume", WM9090_SPEAKER_VOLUME_LEFT, 0, 63, 0,
 235                out_tlv),
 236 SOC_SINGLE("Speaker Switch", WM9090_SPEAKER_VOLUME_LEFT, 6, 1, 1),
 237 SOC_SINGLE("Speaker ZC Switch", WM9090_SPEAKER_VOLUME_LEFT, 7, 1, 0),
 238 SOC_SINGLE_TLV("Speaker Boost Volume", WM9090_CLASSD3, 3, 7, 0, spkboost_tlv),
 239 };
 240
 241 static const struct snd_kcontrol_new wm9090_in1_se_controls[] = {
 242 SOC_SINGLE_TLV("IN1B Volume", WM9090_IN1_LINE_INPUT_B_VOLUME, 0, 6, 0,
 243                in_tlv),
 244 SOC_SINGLE("IN1B Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 7, 1, 1),
 245 SOC_SINGLE("IN1B ZC Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 6, 1, 0),
 246
 247 SOC_SINGLE_TLV("SPKMIX IN1B Volume", WM9090_SPKMIXL_ATTENUATION, 4, 3, 1,
 248                mix_tlv),
 249 SOC_SINGLE_TLV("MIXOUTL IN1B Volume", WM9090_OUTPUT_MIXER3, 4, 3, 1,
 250                mix_tlv),
 251 SOC_SINGLE_TLV("MIXOUTR IN1B Volume", WM9090_OUTPUT_MIXER4, 4, 3, 1,
 252                mix_tlv),
 253 };
 254
 255 static const struct snd_kcontrol_new wm9090_in2_se_controls[] = {
 256 SOC_SINGLE_TLV("IN2B Volume", WM9090_IN2_LINE_INPUT_B_VOLUME, 0, 6, 0,
 257                in_tlv),
 258 SOC_SINGLE("IN2B Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 7, 1, 1),
 259 SOC_SINGLE("IN2B ZC Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 6, 1, 0),
 260
 261 SOC_SINGLE_TLV("SPKMIX IN2B Volume", WM9090_SPKMIXL_ATTENUATION, 0, 3, 1,
 262                mix_tlv),
 263 SOC_SINGLE_TLV("MIXOUTL IN2B Volume", WM9090_OUTPUT_MIXER3, 0, 3, 1,
 264                mix_tlv),
 265 SOC_SINGLE_TLV("MIXOUTR IN2B Volume", WM9090_OUTPUT_MIXER4, 0, 3, 1,
 266                mix_tlv),
 267 };
 268
 269 static int hp_ev(struct snd_soc_dapm_widget *w,
 270                  struct snd_kcontrol *kcontrol, int event)
 271 {
 272         struct snd_soc_codec *codec = w->codec;
 273         unsigned int reg = snd_soc_read(codec, WM9090_ANALOGUE_HP_0);
 274
 275         switch (event) {
 276         case SND_SOC_DAPM_POST_PMU:
 277                 snd_soc_update_bits(codec, WM9090_CHARGE_PUMP_1,
 278                                     WM9090_CP_ENA, WM9090_CP_ENA);
 279
 280                 msleep(5);
 281
 282                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
 283                                     WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA,
 284                                     WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA);
 285
 286                 reg |= WM9090_HPOUT1L_DLY | WM9090_HPOUT1R_DLY;
 287                 snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg);
 288
 289                 /* Start the DC servo.  We don't currently use the
 290                  * ability to save the state since we don't have full
 291                  * control of the analogue paths and they can change
 292                  * DC offsets; see the WM8904 driver for an example of
 293                  * doing so.
 294                  */
 295                 snd_soc_write(codec, WM9090_DC_SERVO_0,
 296                               WM9090_DCS_ENA_CHAN_0 |
 297                               WM9090_DCS_ENA_CHAN_1 |
 298                               WM9090_DCS_TRIG_STARTUP_1 |
 299                               WM9090_DCS_TRIG_STARTUP_0);
 300                 wait_for_dc_servo(codec);
 301
 302                 reg |= WM9090_HPOUT1R_OUTP | WM9090_HPOUT1R_RMV_SHORT |
 303                         WM9090_HPOUT1L_OUTP | WM9090_HPOUT1L_RMV_SHORT;
 304                 snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg);
 305                 break;
 306
 307         case SND_SOC_DAPM_PRE_PMD:
 308                 reg &= ~(WM9090_HPOUT1L_RMV_SHORT |
 309                          WM9090_HPOUT1L_DLY |
 310                          WM9090_HPOUT1L_OUTP |
 311                          WM9090_HPOUT1R_RMV_SHORT |
 312                          WM9090_HPOUT1R_DLY |
 313                          WM9090_HPOUT1R_OUTP);
 314
 315                 snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg);
 316
 317                 snd_soc_write(codec, WM9090_DC_SERVO_0, 0);
 318
 319                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
 320                                     WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA,
 321                                     0);
 322
 323                 snd_soc_update_bits(codec, WM9090_CHARGE_PUMP_1,
 324                                     WM9090_CP_ENA, 0);
 325                 break;
 326         }
 327
 328         return 0;
 329 }
 330
 331 static const struct snd_kcontrol_new spkmix[] = {
 332 SOC_DAPM_SINGLE("IN1A Switch", WM9090_SPEAKER_MIXER, 6, 1, 0),
 333 SOC_DAPM_SINGLE("IN1B Switch", WM9090_SPEAKER_MIXER, 4, 1, 0),
 334 SOC_DAPM_SINGLE("IN2A Switch", WM9090_SPEAKER_MIXER, 2, 1, 0),
 335 SOC_DAPM_SINGLE("IN2B Switch", WM9090_SPEAKER_MIXER, 0, 1, 0),
 336 };
 337
 338 static const struct snd_kcontrol_new spkout[] = {
 339 SOC_DAPM_SINGLE("Mixer Switch", WM9090_SPKOUT_MIXERS, 4, 1, 0),
 340 };
 341
 342 static const struct snd_kcontrol_new mixoutl[] = {
 343 SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER1, 6, 1, 0),
 344 SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER1, 4, 1, 0),
 345 SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER1, 2, 1, 0),
 346 SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER1, 0, 1, 0),
 347 };
 348
 349 static const struct snd_kcontrol_new mixoutr[] = {
 350 SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER2, 6, 1, 0),
 351 SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER2, 4, 1, 0),
 352 SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER2, 2, 1, 0),
 353 SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER2, 0, 1, 0),
 354 };
 355
 356 static const struct snd_soc_dapm_widget wm9090_dapm_widgets[] = {
 357 SND_SOC_DAPM_INPUT("IN1+"),
 358 SND_SOC_DAPM_INPUT("IN1-"),
 359 SND_SOC_DAPM_INPUT("IN2+"),
 360 SND_SOC_DAPM_INPUT("IN2-"),
 361
 362 SND_SOC_DAPM_SUPPLY("OSC", WM9090_POWER_MANAGEMENT_1, 3, 0, NULL, 0),
 363
 364 SND_SOC_DAPM_PGA("IN1A PGA", WM9090_POWER_MANAGEMENT_2, 7, 0, NULL, 0),
 365 SND_SOC_DAPM_PGA("IN1B PGA", WM9090_POWER_MANAGEMENT_2, 6, 0, NULL, 0),
 366 SND_SOC_DAPM_PGA("IN2A PGA", WM9090_POWER_MANAGEMENT_2, 5, 0, NULL, 0),
 367 SND_SOC_DAPM_PGA("IN2B PGA", WM9090_POWER_MANAGEMENT_2, 4, 0, NULL, 0),
 368
 369 SND_SOC_DAPM_MIXER("SPKMIX", WM9090_POWER_MANAGEMENT_3, 3, 0,
 370                    spkmix, ARRAY_SIZE(spkmix)),
 371 SND_SOC_DAPM_MIXER("MIXOUTL", WM9090_POWER_MANAGEMENT_3, 5, 0,
 372                    mixoutl, ARRAY_SIZE(mixoutl)),
 373 SND_SOC_DAPM_MIXER("MIXOUTR", WM9090_POWER_MANAGEMENT_3, 4, 0,
 374                    mixoutr, ARRAY_SIZE(mixoutr)),
 375
 376 SND_SOC_DAPM_PGA_E("HP PGA", SND_SOC_NOPM, 0, 0, NULL, 0,
 377                    hp_ev, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
 378
 379 SND_SOC_DAPM_PGA("SPKPGA", WM9090_POWER_MANAGEMENT_3, 8, 0, NULL, 0),
 380 SND_SOC_DAPM_MIXER("SPKOUT", WM9090_POWER_MANAGEMENT_1, 12, 0,
 381                    spkout, ARRAY_SIZE(spkout)),
 382
 383 SND_SOC_DAPM_OUTPUT("HPR"),
 384 SND_SOC_DAPM_OUTPUT("HPL"),
 385 SND_SOC_DAPM_OUTPUT("Speaker"),
 386 };
 387
 388 static const struct snd_soc_dapm_route audio_map[] = {
 389         { "IN1A PGA", NULL, "IN1+" },
 390         { "IN2A PGA", NULL, "IN2+" },
 391
 392         { "SPKMIX", "IN1A Switch", "IN1A PGA" },
 393         { "SPKMIX", "IN2A Switch", "IN2A PGA" },
 394
 395         { "MIXOUTL", "IN1A Switch", "IN1A PGA" },
 396         { "MIXOUTL", "IN2A Switch", "IN2A PGA" },
 397
 398         { "MIXOUTR", "IN1A Switch", "IN1A PGA" },
 399         { "MIXOUTR", "IN2A Switch", "IN2A PGA" },
 400
 401         { "HP PGA", NULL, "OSC" },
 402         { "HP PGA", NULL, "MIXOUTL" },
 403         { "HP PGA", NULL, "MIXOUTR" },
 404
 405         { "HPL", NULL, "HP PGA" },
 406         { "HPR", NULL, "HP PGA" },
 407
 408         { "SPKPGA", NULL, "OSC" },
 409         { "SPKPGA", NULL, "SPKMIX" },
 410
 411         { "SPKOUT", "Mixer Switch", "SPKPGA" },
 412
 413         { "Speaker", NULL, "SPKOUT" },
 414 };
 415
 416 static const struct snd_soc_dapm_route audio_map_in1_se[] = {
 417         { "IN1B PGA", NULL, "IN1-" },
 418
 419         { "SPKMIX", "IN1B Switch", "IN1B PGA" },
 420         { "MIXOUTL", "IN1B Switch", "IN1B PGA" },
 421         { "MIXOUTR", "IN1B Switch", "IN1B PGA" },
 422 };
 423
 424 static const struct snd_soc_dapm_route audio_map_in1_diff[] = {
 425         { "IN1A PGA", NULL, "IN1-" },
 426 };
 427
 428 static const struct snd_soc_dapm_route audio_map_in2_se[] = {
 429         { "IN2B PGA", NULL, "IN2-" },
 430
 431         { "SPKMIX", "IN2B Switch", "IN2B PGA" },
 432         { "MIXOUTL", "IN2B Switch", "IN2B PGA" },
 433         { "MIXOUTR", "IN2B Switch", "IN2B PGA" },
 434 };
 435
 436 static const struct snd_soc_dapm_route audio_map_in2_diff[] = {
 437         { "IN2A PGA", NULL, "IN2-" },
 438 };
 439
 440 static int wm9090_add_controls(struct snd_soc_codec *codec)
 441 {
 442         struct wm9090_priv *wm9090 = snd_soc_codec_get_drvdata(codec);
 443         struct snd_soc_dapm_context *dapm = &codec->dapm;
 444         int i;
 445
 446         snd_soc_dapm_new_controls(dapm, wm9090_dapm_widgets,
 447                                   ARRAY_SIZE(wm9090_dapm_widgets));
 448
 449         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 450
 451         snd_soc_add_controls(codec, wm9090_controls,
 452                              ARRAY_SIZE(wm9090_controls));
 453
 454         if (wm9090->pdata.lin1_diff) {
 455                 snd_soc_dapm_add_routes(dapm, audio_map_in1_diff,
 456                                         ARRAY_SIZE(audio_map_in1_diff));
 457         } else {
 458                 snd_soc_dapm_add_routes(dapm, audio_map_in1_se,
 459                                         ARRAY_SIZE(audio_map_in1_se));
 460                 snd_soc_add_controls(codec, wm9090_in1_se_controls,
 461                                      ARRAY_SIZE(wm9090_in1_se_controls));
 462         }
 463
 464         if (wm9090->pdata.lin2_diff) {
 465                 snd_soc_dapm_add_routes(dapm, audio_map_in2_diff,
 466                                         ARRAY_SIZE(audio_map_in2_diff));
 467         } else {
 468                 snd_soc_dapm_add_routes(dapm, audio_map_in2_se,
 469                                         ARRAY_SIZE(audio_map_in2_se));
 470                 snd_soc_add_controls(codec, wm9090_in2_se_controls,
 471                                      ARRAY_SIZE(wm9090_in2_se_controls));
 472         }
 473
 474         if (wm9090->pdata.agc_ena) {
 475                 for (i = 0; i < ARRAY_SIZE(wm9090->pdata.agc); i++)
 476                         snd_soc_write(codec, WM9090_AGC_CONTROL_0 + i,
 477                                       wm9090->pdata.agc[i]);
 478                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_3,
 479                                     WM9090_AGC_ENA, WM9090_AGC_ENA);
 480         } else {
 481                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_3,
 482                                     WM9090_AGC_ENA, 0);
 483         }
 484
 485         return 0;
 486
 487 }
 488
 489 /*
 490  * The machine driver should call this from their set_bias_level; if there
 491  * isn't one then this can just be set as the set_bias_level function.
 492  */
 493 static int wm9090_set_bias_level(struct snd_soc_codec *codec,
 494                                  enum snd_soc_bias_level level)
 495 {
 496         u16 *reg_cache = codec->reg_cache;
 497         int i, ret;
 498
 499         switch (level) {
 500         case SND_SOC_BIAS_ON:
 501                 break;
 502
 503         case SND_SOC_BIAS_PREPARE:
 504                 snd_soc_update_bits(codec, WM9090_ANTIPOP2, WM9090_VMID_ENA,
 505                                     WM9090_VMID_ENA);
 506                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
 507                                     WM9090_BIAS_ENA |
 508                                     WM9090_VMID_RES_MASK,
 509                                     WM9090_BIAS_ENA |
 510                                     1 << WM9090_VMID_RES_SHIFT);
 511                 msleep(1);  /* Probably an overestimate */
 512                 break;
 513
 514         case SND_SOC_BIAS_STANDBY:
 515                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
 516                         /* Restore the register cache */
 517                         for (i = 1; i < codec->driver->reg_cache_size; i++) {
 518                                 if (reg_cache[i] == wm9090_reg_defaults[i])
 519                                         continue;
 520                                 if (wm9090_volatile(codec, i))
 521                                         continue;
 522
 523                                 ret = snd_soc_write(codec, i, reg_cache[i]);
 524                                 if (ret != 0)
 525                                         dev_warn(codec->dev,
 526                                                  "Failed to restore register %d: %d\n",
 527                                                  i, ret);
 528                         }
 529                 }
 530
 531                 /* We keep VMID off during standby since the combination of
 532                  * ground referenced outputs and class D speaker mean that
 533                  * latency is not an issue.
 534                  */
 535                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
 536                                     WM9090_BIAS_ENA | WM9090_VMID_RES_MASK, 0);
 537                 snd_soc_update_bits(codec, WM9090_ANTIPOP2,
 538                                     WM9090_VMID_ENA, 0);
 539                 break;
 540
 541         case SND_SOC_BIAS_OFF:
 542                 break;
 543         }
 544
 545         codec->dapm.bias_level = level;
 546
 547         return 0;
 548 }
 549
 550 static int wm9090_probe(struct snd_soc_codec *codec)
 551 {
 552         struct wm9090_priv *wm9090 = snd_soc_codec_get_drvdata(codec);
 553         int ret;
 554
 555         codec->control_data = wm9090->control_data;
 556         ret = snd_soc_codec_set_cache_io(codec, 8, 16, SND_SOC_I2C);
 557         if (ret != 0) {
 558                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 559                 return ret;
 560         }
 561
 562         ret = snd_soc_read(codec, WM9090_SOFTWARE_RESET);
 563         if (ret < 0)
 564                 return ret;
 565         if (ret != wm9090_reg_defaults[WM9090_SOFTWARE_RESET]) {
 566                 dev_err(codec->dev, "Device is not a WM9090, ID=%x\n", ret);
 567                 return -EINVAL;
 568         }
 569
 570         ret = snd_soc_write(codec, WM9090_SOFTWARE_RESET, 0);
 571         if (ret < 0)
 572                 return ret;
 573
 574         /* Configure some defaults; they will be written out when we
 575          * bring the bias up.
 576          */
 577         snd_soc_update_bits(codec, WM9090_IN1_LINE_INPUT_A_VOLUME,
 578                             WM9090_IN1_VU | WM9090_IN1A_ZC,
 579                             WM9090_IN1_VU | WM9090_IN1A_ZC);
 580         snd_soc_update_bits(codec, WM9090_IN1_LINE_INPUT_B_VOLUME,
 581                             WM9090_IN1_VU | WM9090_IN1B_ZC,
 582                             WM9090_IN1_VU | WM9090_IN1B_ZC);
 583         snd_soc_update_bits(codec, WM9090_IN2_LINE_INPUT_A_VOLUME,
 584                             WM9090_IN2_VU | WM9090_IN2A_ZC,
 585                             WM9090_IN2_VU | WM9090_IN2A_ZC);
 586         snd_soc_update_bits(codec, WM9090_IN2_LINE_INPUT_B_VOLUME,
 587                             WM9090_IN2_VU | WM9090_IN2B_ZC,
 588                             WM9090_IN2_VU | WM9090_IN2B_ZC);
 589         snd_soc_update_bits(codec, WM9090_SPEAKER_VOLUME_LEFT,
 590                             WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC,
 591                             WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC);
 592         snd_soc_update_bits(codec, WM9090_LEFT_OUTPUT_VOLUME,
 593                             WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC,
 594                             WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC);
 595         snd_soc_update_bits(codec, WM9090_RIGHT_OUTPUT_VOLUME,
 596                             WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC,
 597                             WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC);
 598
 599         snd_soc_update_bits(codec, WM9090_CLOCKING_1,
 600                             WM9090_TOCLK_ENA, WM9090_TOCLK_ENA);
 601
 602         wm9090_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 603
 604         wm9090_add_controls(codec);
 605
 606         return 0;
 607 }
 608
 609 #ifdef CONFIG_PM
 610 static int wm9090_suspend(struct snd_soc_codec *codec, pm_message_t state)
 611 {
 612         wm9090_set_bias_level(codec, SND_SOC_BIAS_OFF);
 613
 614         return 0;
 615 }
 616
 617 static int wm9090_resume(struct snd_soc_codec *codec)
 618 {
 619         wm9090_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 620
 621         return 0;
 622 }
 623 #else
 624 #define wm9090_suspend NULL
 625 #define wm9090_resume NULL
 626 #endif
 627
 628 static int wm9090_remove(struct snd_soc_codec *codec)
 629 {
 630         wm9090_set_bias_level(codec, SND_SOC_BIAS_OFF);
 631
 632         return 0;
 633 }
 634
 635 static struct snd_soc_codec_driver soc_codec_dev_wm9090 = {
 636         .probe =        wm9090_probe,
 637         .remove =       wm9090_remove,
 638         .suspend =      wm9090_suspend,
 639         .resume =       wm9090_resume,
 640         .set_bias_level = wm9090_set_bias_level,
 641         .reg_cache_size = (WM9090_MAX_REGISTER + 1),
 642         .reg_word_size = sizeof(u16),
 643         .reg_cache_default = wm9090_reg_defaults,
 644         .volatile_register = wm9090_volatile,
 645 };
 646
 647 static int wm9090_i2c_probe(struct i2c_client *i2c,
 648                             const struct i2c_device_id *id)
 649 {
 650         struct wm9090_priv *wm9090;
 651         int ret;
 652
 653         wm9090 = kzalloc(sizeof(*wm9090), GFP_KERNEL);
 654         if (wm9090 == NULL) {
 655                 dev_err(&i2c->dev, "Can not allocate memory\n");
 656                 return -ENOMEM;
 657         }
 658
 659         if (i2c->dev.platform_data)
 660                 memcpy(&wm9090->pdata, i2c->dev.platform_data,
 661                        sizeof(wm9090->pdata));
 662
 663         i2c_set_clientdata(i2c, wm9090);
 664         wm9090->control_data = i2c;
 665
 666         ret =  snd_soc_register_codec(&i2c->dev,
 667                         &soc_codec_dev_wm9090,  NULL, 0);
 668         if (ret < 0)
 669                 kfree(wm9090);
 670         return ret;
 671 }
 672
 673 static int __devexit wm9090_i2c_remove(struct i2c_client *i2c)
 674 {
 675         struct wm9090_priv *wm9090 = i2c_get_clientdata(i2c);
 676
 677         snd_soc_unregister_codec(&i2c->dev);
 678         kfree(wm9090);
 679
 680         return 0;
 681 }
 682
 683 static const struct i2c_device_id wm9090_id[] = {
 684         { "wm9090", 0 },
 685         { "wm9093", 0 },
 686         { }
 687 };
 688 MODULE_DEVICE_TABLE(i2c, wm9090_id);
 689
 690 static struct i2c_driver wm9090_i2c_driver = {
 691         .driver = {
 692                 .name = "wm9090-codec",
 693                 .owner = THIS_MODULE,
 694         },
 695         .probe = wm9090_i2c_probe,
 696         .remove = __devexit_p(wm9090_i2c_remove),
 697         .id_table = wm9090_id,
 698 };
 699
 700 static int __init wm9090_init(void)
 701 {
 702         return i2c_add_driver(&wm9090_i2c_driver);
 703 }
 704 module_init(wm9090_init);
 705
 706 static void __exit wm9090_exit(void)
 707 {
 708         i2c_del_driver(&wm9090_i2c_driver);
 709 }
 710 module_exit(wm9090_exit);
 711
 712 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 713 MODULE_DESCRIPTION("WM9090 ASoC driver");
 714 MODULE_LICENSE("GPL");