sound/soc/codecs/wm9090.c

   1 /*
   2  * ALSA SoC WM9090 driver
   3  *
   4  * Copyright 2009-12 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/regmap.h>
  29 #include <linux/slab.h>
  30 #include <sound/initval.h>
  31 #include <sound/soc.h>
  32 #include <sound/tlv.h>
  33 #include <sound/wm9090.h>
  34
  35 #include "wm9090.h"
  36
  37 static const struct reg_default wm9090_reg_defaults[] = {
  38         { 1,  0x0006 },     /* R1   - Power Management (1) */
  39         { 2,  0x6000 },     /* R2   - Power Management (2) */
  40         { 3,  0x0000 },     /* R3   - Power Management (3) */
  41         { 6,  0x01C0 },     /* R6   - Clocking 1 */
  42         { 22, 0x0003 },     /* R22  - IN1 Line Control */
  43         { 23, 0x0003 },     /* R23  - IN2 Line Control */
  44         { 24, 0x0083 },     /* R24  - IN1 Line Input A Volume */
  45         { 25, 0x0083 },     /* R25  - IN1  Line Input B Volume */
  46         { 26, 0x0083 },     /* R26  - IN2 Line Input A Volume */
  47         { 27, 0x0083 },     /* R27  - IN2 Line Input B Volume */
  48         { 28, 0x002D },     /* R28  - Left Output Volume */
  49         { 29, 0x002D },     /* R29  - Right Output Volume */
  50         { 34, 0x0100 },     /* R34  - SPKMIXL Attenuation */
  51         { 35, 0x0010 },     /* R36  - SPKOUT Mixers */
  52         { 37, 0x0140 },     /* R37  - ClassD3 */
  53         { 38, 0x0039 },     /* R38  - Speaker Volume Left */
  54         { 45, 0x0000 },     /* R45  - Output Mixer1 */
  55         { 46, 0x0000 },     /* R46  - Output Mixer2 */
  56         { 47, 0x0100 },     /* R47  - Output Mixer3 */
  57         { 48, 0x0100 },     /* R48  - Output Mixer4 */
  58         { 54, 0x0000 },     /* R54  - Speaker Mixer */
  59         { 57, 0x000D },     /* R57  - AntiPOP2 */
  60         { 70, 0x0000 },     /* R70  - Write Sequencer 0 */
  61         { 71, 0x0000 },     /* R71  - Write Sequencer 1 */
  62         { 72, 0x0000 },     /* R72  - Write Sequencer 2 */
  63         { 73, 0x0000 },     /* R73  - Write Sequencer 3 */
  64         { 74, 0x0000 },     /* R74  - Write Sequencer 4 */
  65         { 75, 0x0000 },     /* R75  - Write Sequencer 5 */
  66         { 76, 0x1F25 },     /* R76  - Charge Pump 1 */
  67         { 85, 0x054A },     /* R85  - DC Servo 1 */
  68         { 87, 0x0000 },     /* R87  - DC Servo 3 */
  69         { 96, 0x0100 },     /* R96  - Analogue HP 0 */
  70         { 98, 0x8640 },     /* R98  - AGC Control 0 */
  71         { 99, 0xC000 },     /* R99  - AGC Control 1 */
  72         { 100, 0x0200 },     /* R100 - AGC Control 2 */
  73 };
  74
  75 /* This struct is used to save the context */
  76 struct wm9090_priv {
  77         struct wm9090_platform_data pdata;
  78         struct regmap *regmap;
  79 };
  80
  81 static bool wm9090_volatile(struct device *dev, unsigned int reg)
  82 {
  83         switch (reg) {
  84         case WM9090_SOFTWARE_RESET:
  85         case WM9090_DC_SERVO_0:
  86         case WM9090_DC_SERVO_READBACK_0:
  87         case WM9090_DC_SERVO_READBACK_1:
  88         case WM9090_DC_SERVO_READBACK_2:
  89                 return true;
  90
  91         default:
  92                 return false;
  93         }
  94 }
  95
  96 static bool wm9090_readable(struct device *dev, unsigned int reg)
  97 {
  98         switch (reg) {
  99         case WM9090_SOFTWARE_RESET:
 100         case WM9090_POWER_MANAGEMENT_1:
 101         case WM9090_POWER_MANAGEMENT_2:
 102         case WM9090_POWER_MANAGEMENT_3:
 103         case WM9090_CLOCKING_1:
 104         case WM9090_IN1_LINE_CONTROL:
 105         case WM9090_IN2_LINE_CONTROL:
 106         case WM9090_IN1_LINE_INPUT_A_VOLUME:
 107         case WM9090_IN1_LINE_INPUT_B_VOLUME:
 108         case WM9090_IN2_LINE_INPUT_A_VOLUME:
 109         case WM9090_IN2_LINE_INPUT_B_VOLUME:
 110         case WM9090_LEFT_OUTPUT_VOLUME:
 111         case WM9090_RIGHT_OUTPUT_VOLUME:
 112         case WM9090_SPKMIXL_ATTENUATION:
 113         case WM9090_SPKOUT_MIXERS:
 114         case WM9090_CLASSD3:
 115         case WM9090_SPEAKER_VOLUME_LEFT:
 116         case WM9090_OUTPUT_MIXER1:
 117         case WM9090_OUTPUT_MIXER2:
 118         case WM9090_OUTPUT_MIXER3:
 119         case WM9090_OUTPUT_MIXER4:
 120         case WM9090_SPEAKER_MIXER:
 121         case WM9090_ANTIPOP2:
 122         case WM9090_WRITE_SEQUENCER_0:
 123         case WM9090_WRITE_SEQUENCER_1:
 124         case WM9090_WRITE_SEQUENCER_2:
 125         case WM9090_WRITE_SEQUENCER_3:
 126         case WM9090_WRITE_SEQUENCER_4:
 127         case WM9090_WRITE_SEQUENCER_5:
 128         case WM9090_CHARGE_PUMP_1:
 129         case WM9090_DC_SERVO_0:
 130         case WM9090_DC_SERVO_1:
 131         case WM9090_DC_SERVO_3:
 132         case WM9090_DC_SERVO_READBACK_0:
 133         case WM9090_DC_SERVO_READBACK_1:
 134         case WM9090_DC_SERVO_READBACK_2:
 135         case WM9090_ANALOGUE_HP_0:
 136         case WM9090_AGC_CONTROL_0:
 137         case WM9090_AGC_CONTROL_1:
 138         case WM9090_AGC_CONTROL_2:
 139                 return true;
 140
 141         default:
 142                 return false;
 143         }
 144 }
 145
 146 static void wait_for_dc_servo(struct snd_soc_codec *codec)
 147 {
 148         unsigned int reg;
 149         int count = 0;
 150
 151         dev_dbg(codec->dev, "Waiting for DC servo...\n");
 152         do {
 153                 count++;
 154                 msleep(1);
 155                 reg = snd_soc_read(codec, WM9090_DC_SERVO_READBACK_0);
 156                 dev_dbg(codec->dev, "DC servo status: %x\n", reg);
 157         } while ((reg & WM9090_DCS_CAL_COMPLETE_MASK)
 158                  != WM9090_DCS_CAL_COMPLETE_MASK && count < 1000);
 159
 160         if ((reg & WM9090_DCS_CAL_COMPLETE_MASK)
 161             != WM9090_DCS_CAL_COMPLETE_MASK)
 162                 dev_err(codec->dev, "Timed out waiting for DC Servo\n");
 163 }
 164
 165 static const DECLARE_TLV_DB_RANGE(in_tlv,
 166         0, 0, TLV_DB_SCALE_ITEM(-600, 0, 0),
 167         1, 3, TLV_DB_SCALE_ITEM(-350, 350, 0),
 168         4, 6, TLV_DB_SCALE_ITEM(600, 600, 0)
 169 );
 170 static const DECLARE_TLV_DB_RANGE(mix_tlv,
 171         0, 2, TLV_DB_SCALE_ITEM(-1200, 300, 0),
 172         3, 3, TLV_DB_SCALE_ITEM(0, 0, 0)
 173 );
 174 static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
 175 static const DECLARE_TLV_DB_RANGE(spkboost_tlv,
 176         0, 6, TLV_DB_SCALE_ITEM(0, 150, 0),
 177         7, 7, TLV_DB_SCALE_ITEM(1200, 0, 0)
 178 );
 179
 180 static const struct snd_kcontrol_new wm9090_controls[] = {
 181 SOC_SINGLE_TLV("IN1A Volume", WM9090_IN1_LINE_INPUT_A_VOLUME, 0, 6, 0,
 182                in_tlv),
 183 SOC_SINGLE("IN1A Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 7, 1, 1),
 184 SOC_SINGLE("IN1A ZC Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 6, 1, 0),
 185
 186 SOC_SINGLE_TLV("IN2A Volume", WM9090_IN2_LINE_INPUT_A_VOLUME, 0, 6, 0,
 187                in_tlv),
 188 SOC_SINGLE("IN2A Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 7, 1, 1),
 189 SOC_SINGLE("IN2A ZC Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 6, 1, 0),
 190
 191 SOC_SINGLE("MIXOUTL Switch", WM9090_OUTPUT_MIXER3, 8, 1, 1),
 192 SOC_SINGLE_TLV("MIXOUTL IN1A Volume", WM9090_OUTPUT_MIXER3, 6, 3, 1,
 193                mix_tlv),
 194 SOC_SINGLE_TLV("MIXOUTL IN2A Volume", WM9090_OUTPUT_MIXER3, 2, 3, 1,
 195                mix_tlv),
 196
 197 SOC_SINGLE("MIXOUTR Switch", WM9090_OUTPUT_MIXER4, 8, 1, 1),
 198 SOC_SINGLE_TLV("MIXOUTR IN1A Volume", WM9090_OUTPUT_MIXER4, 6, 3, 1,
 199                mix_tlv),
 200 SOC_SINGLE_TLV("MIXOUTR IN2A Volume", WM9090_OUTPUT_MIXER4, 2, 3, 1,
 201                mix_tlv),
 202
 203 SOC_SINGLE("SPKMIX Switch", WM9090_SPKMIXL_ATTENUATION, 8, 1, 1),
 204 SOC_SINGLE_TLV("SPKMIX IN1A Volume", WM9090_SPKMIXL_ATTENUATION, 6, 3, 1,
 205                mix_tlv),
 206 SOC_SINGLE_TLV("SPKMIX IN2A Volume", WM9090_SPKMIXL_ATTENUATION, 2, 3, 1,
 207                mix_tlv),
 208
 209 SOC_DOUBLE_R_TLV("Headphone Volume", WM9090_LEFT_OUTPUT_VOLUME,
 210                  WM9090_RIGHT_OUTPUT_VOLUME, 0, 63, 0, out_tlv),
 211 SOC_DOUBLE_R("Headphone Switch", WM9090_LEFT_OUTPUT_VOLUME,
 212              WM9090_RIGHT_OUTPUT_VOLUME, 6, 1, 1),
 213 SOC_DOUBLE_R("Headphone ZC Switch", WM9090_LEFT_OUTPUT_VOLUME,
 214              WM9090_RIGHT_OUTPUT_VOLUME, 7, 1, 0),
 215
 216 SOC_SINGLE_TLV("Speaker Volume", WM9090_SPEAKER_VOLUME_LEFT, 0, 63, 0,
 217                out_tlv),
 218 SOC_SINGLE("Speaker Switch", WM9090_SPEAKER_VOLUME_LEFT, 6, 1, 1),
 219 SOC_SINGLE("Speaker ZC Switch", WM9090_SPEAKER_VOLUME_LEFT, 7, 1, 0),
 220 SOC_SINGLE_TLV("Speaker Boost Volume", WM9090_CLASSD3, 3, 7, 0, spkboost_tlv),
 221 };
 222
 223 static const struct snd_kcontrol_new wm9090_in1_se_controls[] = {
 224 SOC_SINGLE_TLV("IN1B Volume", WM9090_IN1_LINE_INPUT_B_VOLUME, 0, 6, 0,
 225                in_tlv),
 226 SOC_SINGLE("IN1B Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 7, 1, 1),
 227 SOC_SINGLE("IN1B ZC Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 6, 1, 0),
 228
 229 SOC_SINGLE_TLV("SPKMIX IN1B Volume", WM9090_SPKMIXL_ATTENUATION, 4, 3, 1,
 230                mix_tlv),
 231 SOC_SINGLE_TLV("MIXOUTL IN1B Volume", WM9090_OUTPUT_MIXER3, 4, 3, 1,
 232                mix_tlv),
 233 SOC_SINGLE_TLV("MIXOUTR IN1B Volume", WM9090_OUTPUT_MIXER4, 4, 3, 1,
 234                mix_tlv),
 235 };
 236
 237 static const struct snd_kcontrol_new wm9090_in2_se_controls[] = {
 238 SOC_SINGLE_TLV("IN2B Volume", WM9090_IN2_LINE_INPUT_B_VOLUME, 0, 6, 0,
 239                in_tlv),
 240 SOC_SINGLE("IN2B Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 7, 1, 1),
 241 SOC_SINGLE("IN2B ZC Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 6, 1, 0),
 242
 243 SOC_SINGLE_TLV("SPKMIX IN2B Volume", WM9090_SPKMIXL_ATTENUATION, 0, 3, 1,
 244                mix_tlv),
 245 SOC_SINGLE_TLV("MIXOUTL IN2B Volume", WM9090_OUTPUT_MIXER3, 0, 3, 1,
 246                mix_tlv),
 247 SOC_SINGLE_TLV("MIXOUTR IN2B Volume", WM9090_OUTPUT_MIXER4, 0, 3, 1,
 248                mix_tlv),
 249 };
 250
 251 static int hp_ev(struct snd_soc_dapm_widget *w,
 252                  struct snd_kcontrol *kcontrol, int event)
 253 {
 254         struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 255         unsigned int reg = snd_soc_read(codec, WM9090_ANALOGUE_HP_0);
 256
 257         switch (event) {
 258         case SND_SOC_DAPM_POST_PMU:
 259                 snd_soc_update_bits(codec, WM9090_CHARGE_PUMP_1,
 260                                     WM9090_CP_ENA, WM9090_CP_ENA);
 261
 262                 msleep(5);
 263
 264                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
 265                                     WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA,
 266                                     WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA);
 267
 268                 reg |= WM9090_HPOUT1L_DLY | WM9090_HPOUT1R_DLY;
 269                 snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg);
 270
 271                 /* Start the DC servo.  We don't currently use the
 272                  * ability to save the state since we don't have full
 273                  * control of the analogue paths and they can change
 274                  * DC offsets; see the WM8904 driver for an example of
 275                  * doing so.
 276                  */
 277                 snd_soc_write(codec, WM9090_DC_SERVO_0,
 278                               WM9090_DCS_ENA_CHAN_0 |
 279                               WM9090_DCS_ENA_CHAN_1 |
 280                               WM9090_DCS_TRIG_STARTUP_1 |
 281                               WM9090_DCS_TRIG_STARTUP_0);
 282                 wait_for_dc_servo(codec);
 283
 284                 reg |= WM9090_HPOUT1R_OUTP | WM9090_HPOUT1R_RMV_SHORT |
 285                         WM9090_HPOUT1L_OUTP | WM9090_HPOUT1L_RMV_SHORT;
 286                 snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg);
 287                 break;
 288
 289         case SND_SOC_DAPM_PRE_PMD:
 290                 reg &= ~(WM9090_HPOUT1L_RMV_SHORT |
 291                          WM9090_HPOUT1L_DLY |
 292                          WM9090_HPOUT1L_OUTP |
 293                          WM9090_HPOUT1R_RMV_SHORT |
 294                          WM9090_HPOUT1R_DLY |
 295                          WM9090_HPOUT1R_OUTP);
 296
 297                 snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg);
 298
 299                 snd_soc_write(codec, WM9090_DC_SERVO_0, 0);
 300
 301                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
 302                                     WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA,
 303                                     0);
 304
 305                 snd_soc_update_bits(codec, WM9090_CHARGE_PUMP_1,
 306                                     WM9090_CP_ENA, 0);
 307                 break;
 308         }
 309
 310         return 0;
 311 }
 312
 313 static const struct snd_kcontrol_new spkmix[] = {
 314 SOC_DAPM_SINGLE("IN1A Switch", WM9090_SPEAKER_MIXER, 6, 1, 0),
 315 SOC_DAPM_SINGLE("IN1B Switch", WM9090_SPEAKER_MIXER, 4, 1, 0),
 316 SOC_DAPM_SINGLE("IN2A Switch", WM9090_SPEAKER_MIXER, 2, 1, 0),
 317 SOC_DAPM_SINGLE("IN2B Switch", WM9090_SPEAKER_MIXER, 0, 1, 0),
 318 };
 319
 320 static const struct snd_kcontrol_new spkout[] = {
 321 SOC_DAPM_SINGLE("Mixer Switch", WM9090_SPKOUT_MIXERS, 4, 1, 0),
 322 };
 323
 324 static const struct snd_kcontrol_new mixoutl[] = {
 325 SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER1, 6, 1, 0),
 326 SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER1, 4, 1, 0),
 327 SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER1, 2, 1, 0),
 328 SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER1, 0, 1, 0),
 329 };
 330
 331 static const struct snd_kcontrol_new mixoutr[] = {
 332 SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER2, 6, 1, 0),
 333 SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER2, 4, 1, 0),
 334 SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER2, 2, 1, 0),
 335 SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER2, 0, 1, 0),
 336 };
 337
 338 static const struct snd_soc_dapm_widget wm9090_dapm_widgets[] = {
 339 SND_SOC_DAPM_INPUT("IN1+"),
 340 SND_SOC_DAPM_INPUT("IN1-"),
 341 SND_SOC_DAPM_INPUT("IN2+"),
 342 SND_SOC_DAPM_INPUT("IN2-"),
 343
 344 SND_SOC_DAPM_SUPPLY("OSC", WM9090_POWER_MANAGEMENT_1, 3, 0, NULL, 0),
 345
 346 SND_SOC_DAPM_PGA("IN1A PGA", WM9090_POWER_MANAGEMENT_2, 7, 0, NULL, 0),
 347 SND_SOC_DAPM_PGA("IN1B PGA", WM9090_POWER_MANAGEMENT_2, 6, 0, NULL, 0),
 348 SND_SOC_DAPM_PGA("IN2A PGA", WM9090_POWER_MANAGEMENT_2, 5, 0, NULL, 0),
 349 SND_SOC_DAPM_PGA("IN2B PGA", WM9090_POWER_MANAGEMENT_2, 4, 0, NULL, 0),
 350
 351 SND_SOC_DAPM_MIXER("SPKMIX", WM9090_POWER_MANAGEMENT_3, 3, 0,
 352                    spkmix, ARRAY_SIZE(spkmix)),
 353 SND_SOC_DAPM_MIXER("MIXOUTL", WM9090_POWER_MANAGEMENT_3, 5, 0,
 354                    mixoutl, ARRAY_SIZE(mixoutl)),
 355 SND_SOC_DAPM_MIXER("MIXOUTR", WM9090_POWER_MANAGEMENT_3, 4, 0,
 356                    mixoutr, ARRAY_SIZE(mixoutr)),
 357
 358 SND_SOC_DAPM_PGA_E("HP PGA", SND_SOC_NOPM, 0, 0, NULL, 0,
 359                    hp_ev, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
 360
 361 SND_SOC_DAPM_PGA("SPKPGA", WM9090_POWER_MANAGEMENT_3, 8, 0, NULL, 0),
 362 SND_SOC_DAPM_MIXER("SPKOUT", WM9090_POWER_MANAGEMENT_1, 12, 0,
 363                    spkout, ARRAY_SIZE(spkout)),
 364
 365 SND_SOC_DAPM_OUTPUT("HPR"),
 366 SND_SOC_DAPM_OUTPUT("HPL"),
 367 SND_SOC_DAPM_OUTPUT("Speaker"),
 368 };
 369
 370 static const struct snd_soc_dapm_route audio_map[] = {
 371         { "IN1A PGA", NULL, "IN1+" },
 372         { "IN2A PGA", NULL, "IN2+" },
 373
 374         { "SPKMIX", "IN1A Switch", "IN1A PGA" },
 375         { "SPKMIX", "IN2A Switch", "IN2A PGA" },
 376
 377         { "MIXOUTL", "IN1A Switch", "IN1A PGA" },
 378         { "MIXOUTL", "IN2A Switch", "IN2A PGA" },
 379
 380         { "MIXOUTR", "IN1A Switch", "IN1A PGA" },
 381         { "MIXOUTR", "IN2A Switch", "IN2A PGA" },
 382
 383         { "HP PGA", NULL, "OSC" },
 384         { "HP PGA", NULL, "MIXOUTL" },
 385         { "HP PGA", NULL, "MIXOUTR" },
 386
 387         { "HPL", NULL, "HP PGA" },
 388         { "HPR", NULL, "HP PGA" },
 389
 390         { "SPKPGA", NULL, "OSC" },
 391         { "SPKPGA", NULL, "SPKMIX" },
 392
 393         { "SPKOUT", "Mixer Switch", "SPKPGA" },
 394
 395         { "Speaker", NULL, "SPKOUT" },
 396 };
 397
 398 static const struct snd_soc_dapm_route audio_map_in1_se[] = {
 399         { "IN1B PGA", NULL, "IN1-" },
 400
 401         { "SPKMIX", "IN1B Switch", "IN1B PGA" },
 402         { "MIXOUTL", "IN1B Switch", "IN1B PGA" },
 403         { "MIXOUTR", "IN1B Switch", "IN1B PGA" },
 404 };
 405
 406 static const struct snd_soc_dapm_route audio_map_in1_diff[] = {
 407         { "IN1A PGA", NULL, "IN1-" },
 408 };
 409
 410 static const struct snd_soc_dapm_route audio_map_in2_se[] = {
 411         { "IN2B PGA", NULL, "IN2-" },
 412
 413         { "SPKMIX", "IN2B Switch", "IN2B PGA" },
 414         { "MIXOUTL", "IN2B Switch", "IN2B PGA" },
 415         { "MIXOUTR", "IN2B Switch", "IN2B PGA" },
 416 };
 417
 418 static const struct snd_soc_dapm_route audio_map_in2_diff[] = {
 419         { "IN2A PGA", NULL, "IN2-" },
 420 };
 421
 422 static int wm9090_add_controls(struct snd_soc_codec *codec)
 423 {
 424         struct wm9090_priv *wm9090 = snd_soc_codec_get_drvdata(codec);
 425         struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
 426         int i;
 427
 428         snd_soc_dapm_new_controls(dapm, wm9090_dapm_widgets,
 429                                   ARRAY_SIZE(wm9090_dapm_widgets));
 430
 431         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 432
 433         snd_soc_add_codec_controls(codec, wm9090_controls,
 434                              ARRAY_SIZE(wm9090_controls));
 435
 436         if (wm9090->pdata.lin1_diff) {
 437                 snd_soc_dapm_add_routes(dapm, audio_map_in1_diff,
 438                                         ARRAY_SIZE(audio_map_in1_diff));
 439         } else {
 440                 snd_soc_dapm_add_routes(dapm, audio_map_in1_se,
 441                                         ARRAY_SIZE(audio_map_in1_se));
 442                 snd_soc_add_codec_controls(codec, wm9090_in1_se_controls,
 443                                      ARRAY_SIZE(wm9090_in1_se_controls));
 444         }
 445
 446         if (wm9090->pdata.lin2_diff) {
 447                 snd_soc_dapm_add_routes(dapm, audio_map_in2_diff,
 448                                         ARRAY_SIZE(audio_map_in2_diff));
 449         } else {
 450                 snd_soc_dapm_add_routes(dapm, audio_map_in2_se,
 451                                         ARRAY_SIZE(audio_map_in2_se));
 452                 snd_soc_add_codec_controls(codec, wm9090_in2_se_controls,
 453                                      ARRAY_SIZE(wm9090_in2_se_controls));
 454         }
 455
 456         if (wm9090->pdata.agc_ena) {
 457                 for (i = 0; i < ARRAY_SIZE(wm9090->pdata.agc); i++)
 458                         snd_soc_write(codec, WM9090_AGC_CONTROL_0 + i,
 459                                       wm9090->pdata.agc[i]);
 460                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_3,
 461                                     WM9090_AGC_ENA, WM9090_AGC_ENA);
 462         } else {
 463                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_3,
 464                                     WM9090_AGC_ENA, 0);
 465         }
 466
 467         return 0;
 468
 469 }
 470
 471 /*
 472  * The machine driver should call this from their set_bias_level; if there
 473  * isn't one then this can just be set as the set_bias_level function.
 474  */
 475 static int wm9090_set_bias_level(struct snd_soc_codec *codec,
 476                                  enum snd_soc_bias_level level)
 477 {
 478         struct wm9090_priv *wm9090 = snd_soc_codec_get_drvdata(codec);
 479
 480         switch (level) {
 481         case SND_SOC_BIAS_ON:
 482                 break;
 483
 484         case SND_SOC_BIAS_PREPARE:
 485                 snd_soc_update_bits(codec, WM9090_ANTIPOP2, WM9090_VMID_ENA,
 486                                     WM9090_VMID_ENA);
 487                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
 488                                     WM9090_BIAS_ENA |
 489                                     WM9090_VMID_RES_MASK,
 490                                     WM9090_BIAS_ENA |
 491                                     1 << WM9090_VMID_RES_SHIFT);
 492                 msleep(1);  /* Probably an overestimate */
 493                 break;
 494
 495         case SND_SOC_BIAS_STANDBY:
 496                 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) {
 497                         /* Restore the register cache */
 498                         regcache_sync(wm9090->regmap);
 499                 }
 500
 501                 /* We keep VMID off during standby since the combination of
 502                  * ground referenced outputs and class D speaker mean that
 503                  * latency is not an issue.
 504                  */
 505                 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
 506                                     WM9090_BIAS_ENA | WM9090_VMID_RES_MASK, 0);
 507                 snd_soc_update_bits(codec, WM9090_ANTIPOP2,
 508                                     WM9090_VMID_ENA, 0);
 509                 break;
 510
 511         case SND_SOC_BIAS_OFF:
 512                 break;
 513         }
 514
 515         return 0;
 516 }
 517
 518 static int wm9090_probe(struct snd_soc_codec *codec)
 519 {
 520         /* Configure some defaults; they will be written out when we
 521          * bring the bias up.
 522          */
 523         snd_soc_update_bits(codec, WM9090_IN1_LINE_INPUT_A_VOLUME,
 524                             WM9090_IN1_VU | WM9090_IN1A_ZC,
 525                             WM9090_IN1_VU | WM9090_IN1A_ZC);
 526         snd_soc_update_bits(codec, WM9090_IN1_LINE_INPUT_B_VOLUME,
 527                             WM9090_IN1_VU | WM9090_IN1B_ZC,
 528                             WM9090_IN1_VU | WM9090_IN1B_ZC);
 529         snd_soc_update_bits(codec, WM9090_IN2_LINE_INPUT_A_VOLUME,
 530                             WM9090_IN2_VU | WM9090_IN2A_ZC,
 531                             WM9090_IN2_VU | WM9090_IN2A_ZC);
 532         snd_soc_update_bits(codec, WM9090_IN2_LINE_INPUT_B_VOLUME,
 533                             WM9090_IN2_VU | WM9090_IN2B_ZC,
 534                             WM9090_IN2_VU | WM9090_IN2B_ZC);
 535         snd_soc_update_bits(codec, WM9090_SPEAKER_VOLUME_LEFT,
 536                             WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC,
 537                             WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC);
 538         snd_soc_update_bits(codec, WM9090_LEFT_OUTPUT_VOLUME,
 539                             WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC,
 540                             WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC);
 541         snd_soc_update_bits(codec, WM9090_RIGHT_OUTPUT_VOLUME,
 542                             WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC,
 543                             WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC);
 544
 545         snd_soc_update_bits(codec, WM9090_CLOCKING_1,
 546                             WM9090_TOCLK_ENA, WM9090_TOCLK_ENA);
 547
 548         wm9090_add_controls(codec);
 549
 550         return 0;
 551 }
 552
 553 static const struct snd_soc_codec_driver soc_codec_dev_wm9090 = {
 554         .probe =        wm9090_probe,
 555         .set_bias_level = wm9090_set_bias_level,
 556         .suspend_bias_off = true,
 557 };
 558
 559 static const struct regmap_config wm9090_regmap = {
 560         .reg_bits = 8,
 561         .val_bits = 16,
 562
 563         .max_register = WM9090_MAX_REGISTER,
 564         .volatile_reg = wm9090_volatile,
 565         .readable_reg = wm9090_readable,
 566
 567         .cache_type = REGCACHE_RBTREE,
 568         .reg_defaults = wm9090_reg_defaults,
 569         .num_reg_defaults = ARRAY_SIZE(wm9090_reg_defaults),
 570 };
 571
 572
 573 static int wm9090_i2c_probe(struct i2c_client *i2c,
 574                             const struct i2c_device_id *id)
 575 {
 576         struct wm9090_priv *wm9090;
 577         unsigned int reg;
 578         int ret;
 579
 580         wm9090 = devm_kzalloc(&i2c->dev, sizeof(*wm9090), GFP_KERNEL);
 581         if (!wm9090)
 582                 return -ENOMEM;
 583
 584         wm9090->regmap = devm_regmap_init_i2c(i2c, &wm9090_regmap);
 585         if (IS_ERR(wm9090->regmap)) {
 586                 ret = PTR_ERR(wm9090->regmap);
 587                 dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
 588                 return ret;
 589         }
 590
 591         ret = regmap_read(wm9090->regmap, WM9090_SOFTWARE_RESET, &reg);
 592         if (ret < 0)
 593                 return ret;
 594
 595         if (reg != 0x9093) {
 596                 dev_err(&i2c->dev, "Device is not a WM9090, ID=%x\n", reg);
 597                 return -ENODEV;
 598         }
 599
 600         ret = regmap_write(wm9090->regmap, WM9090_SOFTWARE_RESET, 0);
 601         if (ret < 0)
 602                 return ret;
 603
 604         if (i2c->dev.platform_data)
 605                 memcpy(&wm9090->pdata, i2c->dev.platform_data,
 606                        sizeof(wm9090->pdata));
 607
 608         i2c_set_clientdata(i2c, wm9090);
 609
 610         ret =  snd_soc_register_codec(&i2c->dev,
 611                         &soc_codec_dev_wm9090,  NULL, 0);
 612         if (ret != 0) {
 613                 dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
 614                 return ret;
 615         }
 616
 617         return 0;
 618 }
 619
 620 static int wm9090_i2c_remove(struct i2c_client *i2c)
 621 {
 622         snd_soc_unregister_codec(&i2c->dev);
 623         return 0;
 624 }
 625
 626 static const struct i2c_device_id wm9090_id[] = {
 627         { "wm9090", 0 },
 628         { "wm9093", 0 },
 629         { }
 630 };
 631 MODULE_DEVICE_TABLE(i2c, wm9090_id);
 632
 633 static struct i2c_driver wm9090_i2c_driver = {
 634         .driver = {
 635                 .name = "wm9090",
 636         },
 637         .probe = wm9090_i2c_probe,
 638         .remove = wm9090_i2c_remove,
 639         .id_table = wm9090_id,
 640 };
 641
 642 module_i2c_driver(wm9090_i2c_driver);
 643
 644 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 645 MODULE_DESCRIPTION("WM9090 ASoC driver");
 646 MODULE_LICENSE("GPL");