root/sound/soc/codecs/wm8903.c

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DEFINITIONS

This source file includes following definitions.
  1. wm8903_readable_register
  2. wm8903_volatile_register
  3. wm8903_cp_event
  4. wm8903_dcs_event
  5. wm8903_seq_notifier
  6. wm8903_class_w_put
  7. wm8903_set_deemph
  8. wm8903_get_deemph
  9. wm8903_put_deemph
  10. wm8903_set_bias_level
  11. wm8903_set_dai_sysclk
  12. wm8903_set_dai_fmt
  13. wm8903_digital_mute
  14. wm8903_hw_params
  15. wm8903_mic_detect
  16. wm8903_irq
  17. wm8903_resume
  18. wm8903_gpio_request
  19. wm8903_gpio_direction_in
  20. wm8903_gpio_get
  21. wm8903_gpio_direction_out
  22. wm8903_gpio_set
  23. wm8903_init_gpio
  24. wm8903_free_gpio
  25. wm8903_init_gpio
  26. wm8903_free_gpio
  27. wm8903_set_pdata_irq_trigger
  28. wm8903_set_pdata_from_of
  29. wm8903_i2c_probe
  30. wm8903_i2c_remove

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * wm8903.c  --  WM8903 ALSA SoC Audio driver
   4  *
   5  * Copyright 2008-12 Wolfson Microelectronics
   6  * Copyright 2011-2012 NVIDIA, Inc.
   7  *
   8  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
   9  *
  10  * TODO:
  11  *  - TDM mode configuration.
  12  *  - Digital microphone support.
  13  */
  14 
  15 #include <linux/module.h>
  16 #include <linux/moduleparam.h>
  17 #include <linux/init.h>
  18 #include <linux/completion.h>
  19 #include <linux/delay.h>
  20 #include <linux/gpio/driver.h>
  21 #include <linux/pm.h>
  22 #include <linux/i2c.h>
  23 #include <linux/regmap.h>
  24 #include <linux/regulator/consumer.h>
  25 #include <linux/slab.h>
  26 #include <linux/irq.h>
  27 #include <linux/mutex.h>
  28 #include <sound/core.h>
  29 #include <sound/jack.h>
  30 #include <sound/pcm.h>
  31 #include <sound/pcm_params.h>
  32 #include <sound/tlv.h>
  33 #include <sound/soc.h>
  34 #include <sound/initval.h>
  35 #include <sound/wm8903.h>
  36 #include <trace/events/asoc.h>
  37 
  38 #include "wm8903.h"
  39 
  40 /* Register defaults at reset */
  41 static const struct reg_default wm8903_reg_defaults[] = {
  42         { 4,  0x0018 },     /* R4   - Bias Control 0 */
  43         { 5,  0x0000 },     /* R5   - VMID Control 0 */
  44         { 6,  0x0000 },     /* R6   - Mic Bias Control 0 */
  45         { 8,  0x0001 },     /* R8   - Analogue DAC 0 */
  46         { 10, 0x0001 },     /* R10  - Analogue ADC 0 */
  47         { 12, 0x0000 },     /* R12  - Power Management 0 */
  48         { 13, 0x0000 },     /* R13  - Power Management 1 */
  49         { 14, 0x0000 },     /* R14  - Power Management 2 */
  50         { 15, 0x0000 },     /* R15  - Power Management 3 */
  51         { 16, 0x0000 },     /* R16  - Power Management 4 */
  52         { 17, 0x0000 },     /* R17  - Power Management 5 */
  53         { 18, 0x0000 },     /* R18  - Power Management 6 */
  54         { 20, 0x0400 },     /* R20  - Clock Rates 0 */
  55         { 21, 0x0D07 },     /* R21  - Clock Rates 1 */
  56         { 22, 0x0000 },     /* R22  - Clock Rates 2 */
  57         { 24, 0x0050 },     /* R24  - Audio Interface 0 */
  58         { 25, 0x0242 },     /* R25  - Audio Interface 1 */
  59         { 26, 0x0008 },     /* R26  - Audio Interface 2 */
  60         { 27, 0x0022 },     /* R27  - Audio Interface 3 */
  61         { 30, 0x00C0 },     /* R30  - DAC Digital Volume Left */
  62         { 31, 0x00C0 },     /* R31  - DAC Digital Volume Right */
  63         { 32, 0x0000 },     /* R32  - DAC Digital 0 */
  64         { 33, 0x0000 },     /* R33  - DAC Digital 1 */
  65         { 36, 0x00C0 },     /* R36  - ADC Digital Volume Left */
  66         { 37, 0x00C0 },     /* R37  - ADC Digital Volume Right */
  67         { 38, 0x0000 },     /* R38  - ADC Digital 0 */
  68         { 39, 0x0073 },     /* R39  - Digital Microphone 0 */
  69         { 40, 0x09BF },     /* R40  - DRC 0 */
  70         { 41, 0x3241 },     /* R41  - DRC 1 */
  71         { 42, 0x0020 },     /* R42  - DRC 2 */
  72         { 43, 0x0000 },     /* R43  - DRC 3 */
  73         { 44, 0x0085 },     /* R44  - Analogue Left Input 0 */
  74         { 45, 0x0085 },     /* R45  - Analogue Right Input 0 */
  75         { 46, 0x0044 },     /* R46  - Analogue Left Input 1 */
  76         { 47, 0x0044 },     /* R47  - Analogue Right Input 1 */
  77         { 50, 0x0008 },     /* R50  - Analogue Left Mix 0 */
  78         { 51, 0x0004 },     /* R51  - Analogue Right Mix 0 */
  79         { 52, 0x0000 },     /* R52  - Analogue Spk Mix Left 0 */
  80         { 53, 0x0000 },     /* R53  - Analogue Spk Mix Left 1 */
  81         { 54, 0x0000 },     /* R54  - Analogue Spk Mix Right 0 */
  82         { 55, 0x0000 },     /* R55  - Analogue Spk Mix Right 1 */
  83         { 57, 0x002D },     /* R57  - Analogue OUT1 Left */
  84         { 58, 0x002D },     /* R58  - Analogue OUT1 Right */
  85         { 59, 0x0039 },     /* R59  - Analogue OUT2 Left */
  86         { 60, 0x0039 },     /* R60  - Analogue OUT2 Right */
  87         { 62, 0x0139 },     /* R62  - Analogue OUT3 Left */
  88         { 63, 0x0139 },     /* R63  - Analogue OUT3 Right */
  89         { 64, 0x0000 },     /* R65  - Analogue SPK Output Control 0 */
  90         { 67, 0x0010 },     /* R67  - DC Servo 0 */
  91         { 69, 0x00A4 },     /* R69  - DC Servo 2 */
  92         { 90, 0x0000 },     /* R90  - Analogue HP 0 */
  93         { 94, 0x0000 },     /* R94  - Analogue Lineout 0 */
  94         { 98, 0x0000 },     /* R98  - Charge Pump 0 */
  95         { 104, 0x0000 },    /* R104 - Class W 0 */
  96         { 108, 0x0000 },    /* R108 - Write Sequencer 0 */
  97         { 109, 0x0000 },    /* R109 - Write Sequencer 1 */
  98         { 110, 0x0000 },    /* R110 - Write Sequencer 2 */
  99         { 111, 0x0000 },    /* R111 - Write Sequencer 3 */
 100         { 112, 0x0000 },    /* R112 - Write Sequencer 4 */
 101         { 114, 0x0000 },    /* R114 - Control Interface */
 102         { 116, 0x00A8 },    /* R116 - GPIO Control 1 */
 103         { 117, 0x00A8 },    /* R117 - GPIO Control 2 */
 104         { 118, 0x00A8 },    /* R118 - GPIO Control 3 */
 105         { 119, 0x0220 },    /* R119 - GPIO Control 4 */
 106         { 120, 0x01A0 },    /* R120 - GPIO Control 5 */
 107         { 122, 0xFFFF },    /* R122 - Interrupt Status 1 Mask */
 108         { 123, 0x0000 },    /* R123 - Interrupt Polarity 1 */
 109         { 126, 0x0000 },    /* R126 - Interrupt Control */
 110         { 129, 0x0000 },    /* R129 - Control Interface Test 1 */
 111         { 149, 0x6810 },    /* R149 - Charge Pump Test 1 */
 112         { 164, 0x0028 },    /* R164 - Clock Rate Test 4 */
 113         { 172, 0x0000 },    /* R172 - Analogue Output Bias 0 */
 114 };
 115 
 116 #define WM8903_NUM_SUPPLIES 4
 117 static const char *wm8903_supply_names[WM8903_NUM_SUPPLIES] = {
 118         "AVDD",
 119         "CPVDD",
 120         "DBVDD",
 121         "DCVDD",
 122 };
 123 
 124 struct wm8903_priv {
 125         struct wm8903_platform_data *pdata;
 126         struct device *dev;
 127         struct regmap *regmap;
 128         struct regulator_bulk_data supplies[WM8903_NUM_SUPPLIES];
 129 
 130         int sysclk;
 131         int irq;
 132 
 133         struct mutex lock;
 134         int fs;
 135         int deemph;
 136 
 137         int dcs_pending;
 138         int dcs_cache[4];
 139 
 140         /* Reference count */
 141         int class_w_users;
 142 
 143         struct snd_soc_jack *mic_jack;
 144         int mic_det;
 145         int mic_short;
 146         int mic_last_report;
 147         int mic_delay;
 148 
 149 #ifdef CONFIG_GPIOLIB
 150         struct gpio_chip gpio_chip;
 151 #endif
 152 };
 153 
 154 static bool wm8903_readable_register(struct device *dev, unsigned int reg)
 155 {
 156         switch (reg) {
 157         case WM8903_SW_RESET_AND_ID:
 158         case WM8903_REVISION_NUMBER:
 159         case WM8903_BIAS_CONTROL_0:
 160         case WM8903_VMID_CONTROL_0:
 161         case WM8903_MIC_BIAS_CONTROL_0:
 162         case WM8903_ANALOGUE_DAC_0:
 163         case WM8903_ANALOGUE_ADC_0:
 164         case WM8903_POWER_MANAGEMENT_0:
 165         case WM8903_POWER_MANAGEMENT_1:
 166         case WM8903_POWER_MANAGEMENT_2:
 167         case WM8903_POWER_MANAGEMENT_3:
 168         case WM8903_POWER_MANAGEMENT_4:
 169         case WM8903_POWER_MANAGEMENT_5:
 170         case WM8903_POWER_MANAGEMENT_6:
 171         case WM8903_CLOCK_RATES_0:
 172         case WM8903_CLOCK_RATES_1:
 173         case WM8903_CLOCK_RATES_2:
 174         case WM8903_AUDIO_INTERFACE_0:
 175         case WM8903_AUDIO_INTERFACE_1:
 176         case WM8903_AUDIO_INTERFACE_2:
 177         case WM8903_AUDIO_INTERFACE_3:
 178         case WM8903_DAC_DIGITAL_VOLUME_LEFT:
 179         case WM8903_DAC_DIGITAL_VOLUME_RIGHT:
 180         case WM8903_DAC_DIGITAL_0:
 181         case WM8903_DAC_DIGITAL_1:
 182         case WM8903_ADC_DIGITAL_VOLUME_LEFT:
 183         case WM8903_ADC_DIGITAL_VOLUME_RIGHT:
 184         case WM8903_ADC_DIGITAL_0:
 185         case WM8903_DIGITAL_MICROPHONE_0:
 186         case WM8903_DRC_0:
 187         case WM8903_DRC_1:
 188         case WM8903_DRC_2:
 189         case WM8903_DRC_3:
 190         case WM8903_ANALOGUE_LEFT_INPUT_0:
 191         case WM8903_ANALOGUE_RIGHT_INPUT_0:
 192         case WM8903_ANALOGUE_LEFT_INPUT_1:
 193         case WM8903_ANALOGUE_RIGHT_INPUT_1:
 194         case WM8903_ANALOGUE_LEFT_MIX_0:
 195         case WM8903_ANALOGUE_RIGHT_MIX_0:
 196         case WM8903_ANALOGUE_SPK_MIX_LEFT_0:
 197         case WM8903_ANALOGUE_SPK_MIX_LEFT_1:
 198         case WM8903_ANALOGUE_SPK_MIX_RIGHT_0:
 199         case WM8903_ANALOGUE_SPK_MIX_RIGHT_1:
 200         case WM8903_ANALOGUE_OUT1_LEFT:
 201         case WM8903_ANALOGUE_OUT1_RIGHT:
 202         case WM8903_ANALOGUE_OUT2_LEFT:
 203         case WM8903_ANALOGUE_OUT2_RIGHT:
 204         case WM8903_ANALOGUE_OUT3_LEFT:
 205         case WM8903_ANALOGUE_OUT3_RIGHT:
 206         case WM8903_ANALOGUE_SPK_OUTPUT_CONTROL_0:
 207         case WM8903_DC_SERVO_0:
 208         case WM8903_DC_SERVO_2:
 209         case WM8903_DC_SERVO_READBACK_1:
 210         case WM8903_DC_SERVO_READBACK_2:
 211         case WM8903_DC_SERVO_READBACK_3:
 212         case WM8903_DC_SERVO_READBACK_4:
 213         case WM8903_ANALOGUE_HP_0:
 214         case WM8903_ANALOGUE_LINEOUT_0:
 215         case WM8903_CHARGE_PUMP_0:
 216         case WM8903_CLASS_W_0:
 217         case WM8903_WRITE_SEQUENCER_0:
 218         case WM8903_WRITE_SEQUENCER_1:
 219         case WM8903_WRITE_SEQUENCER_2:
 220         case WM8903_WRITE_SEQUENCER_3:
 221         case WM8903_WRITE_SEQUENCER_4:
 222         case WM8903_CONTROL_INTERFACE:
 223         case WM8903_GPIO_CONTROL_1:
 224         case WM8903_GPIO_CONTROL_2:
 225         case WM8903_GPIO_CONTROL_3:
 226         case WM8903_GPIO_CONTROL_4:
 227         case WM8903_GPIO_CONTROL_5:
 228         case WM8903_INTERRUPT_STATUS_1:
 229         case WM8903_INTERRUPT_STATUS_1_MASK:
 230         case WM8903_INTERRUPT_POLARITY_1:
 231         case WM8903_INTERRUPT_CONTROL:
 232         case WM8903_CLOCK_RATE_TEST_4:
 233         case WM8903_ANALOGUE_OUTPUT_BIAS_0:
 234                 return true;
 235         default:
 236                 return false;
 237         }
 238 }
 239 
 240 static bool wm8903_volatile_register(struct device *dev, unsigned int reg)
 241 {
 242         switch (reg) {
 243         case WM8903_SW_RESET_AND_ID:
 244         case WM8903_REVISION_NUMBER:
 245         case WM8903_INTERRUPT_STATUS_1:
 246         case WM8903_WRITE_SEQUENCER_4:
 247         case WM8903_DC_SERVO_READBACK_1:
 248         case WM8903_DC_SERVO_READBACK_2:
 249         case WM8903_DC_SERVO_READBACK_3:
 250         case WM8903_DC_SERVO_READBACK_4:
 251                 return true;
 252 
 253         default:
 254                 return false;
 255         }
 256 }
 257 
 258 static int wm8903_cp_event(struct snd_soc_dapm_widget *w,
 259                            struct snd_kcontrol *kcontrol, int event)
 260 {
 261         WARN_ON(event != SND_SOC_DAPM_POST_PMU);
 262         mdelay(4);
 263 
 264         return 0;
 265 }
 266 
 267 static int wm8903_dcs_event(struct snd_soc_dapm_widget *w,
 268                             struct snd_kcontrol *kcontrol, int event)
 269 {
 270         struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
 271         struct wm8903_priv *wm8903 = snd_soc_component_get_drvdata(component);
 272 
 273         switch (event) {
 274         case SND_SOC_DAPM_POST_PMU:
 275                 wm8903->dcs_pending |= 1 << w->shift;
 276                 break;
 277         case SND_SOC_DAPM_PRE_PMD:
 278                 snd_soc_component_update_bits(component, WM8903_DC_SERVO_0,
 279                                     1 << w->shift, 0);
 280                 break;
 281         }
 282 
 283         return 0;
 284 }
 285 
 286 #define WM8903_DCS_MODE_WRITE_STOP 0
 287 #define WM8903_DCS_MODE_START_STOP 2
 288 
 289 static void wm8903_seq_notifier(struct snd_soc_component *component,
 290                                 enum snd_soc_dapm_type event, int subseq)
 291 {
 292         struct wm8903_priv *wm8903 = snd_soc_component_get_drvdata(component);
 293         int dcs_mode = WM8903_DCS_MODE_WRITE_STOP;
 294         int i, val;
 295 
 296         /* Complete any pending DC servo starts */
 297         if (wm8903->dcs_pending) {
 298                 dev_dbg(component->dev, "Starting DC servo for %x\n",
 299                         wm8903->dcs_pending);
 300 
 301                 /* If we've no cached values then we need to do startup */
 302                 for (i = 0; i < ARRAY_SIZE(wm8903->dcs_cache); i++) {
 303                         if (!(wm8903->dcs_pending & (1 << i)))
 304                                 continue;
 305 
 306                         if (wm8903->dcs_cache[i]) {
 307                                 dev_dbg(component->dev,
 308                                         "Restore DC servo %d value %x\n",
 309                                         3 - i, wm8903->dcs_cache[i]);
 310 
 311                                 snd_soc_component_write(component, WM8903_DC_SERVO_4 + i,
 312                                               wm8903->dcs_cache[i] & 0xff);
 313                         } else {
 314                                 dev_dbg(component->dev,
 315                                         "Calibrate DC servo %d\n", 3 - i);
 316                                 dcs_mode = WM8903_DCS_MODE_START_STOP;
 317                         }
 318                 }
 319 
 320                 /* Don't trust the cache for analogue */
 321                 if (wm8903->class_w_users)
 322                         dcs_mode = WM8903_DCS_MODE_START_STOP;
 323 
 324                 snd_soc_component_update_bits(component, WM8903_DC_SERVO_2,
 325                                     WM8903_DCS_MODE_MASK, dcs_mode);
 326 
 327                 snd_soc_component_update_bits(component, WM8903_DC_SERVO_0,
 328                                     WM8903_DCS_ENA_MASK, wm8903->dcs_pending);
 329 
 330                 switch (dcs_mode) {
 331                 case WM8903_DCS_MODE_WRITE_STOP:
 332                         break;
 333 
 334                 case WM8903_DCS_MODE_START_STOP:
 335                         msleep(270);
 336 
 337                         /* Cache the measured offsets for digital */
 338                         if (wm8903->class_w_users)
 339                                 break;
 340 
 341                         for (i = 0; i < ARRAY_SIZE(wm8903->dcs_cache); i++) {
 342                                 if (!(wm8903->dcs_pending & (1 << i)))
 343                                         continue;
 344 
 345                                 val = snd_soc_component_read32(component,
 346                                                    WM8903_DC_SERVO_READBACK_1 + i);
 347                                 dev_dbg(component->dev, "DC servo %d: %x\n",
 348                                         3 - i, val);
 349                                 wm8903->dcs_cache[i] = val;
 350                         }
 351                         break;
 352 
 353                 default:
 354                         pr_warn("DCS mode %d delay not set\n", dcs_mode);
 355                         break;
 356                 }
 357 
 358                 wm8903->dcs_pending = 0;
 359         }
 360 }
 361 
 362 /*
 363  * When used with DAC outputs only the WM8903 charge pump supports
 364  * operation in class W mode, providing very low power consumption
 365  * when used with digital sources.  Enable and disable this mode
 366  * automatically depending on the mixer configuration.
 367  *
 368  * All the relevant controls are simple switches.
 369  */
 370 static int wm8903_class_w_put(struct snd_kcontrol *kcontrol,
 371                               struct snd_ctl_elem_value *ucontrol)
 372 {
 373         struct snd_soc_component *component = snd_soc_dapm_kcontrol_component(kcontrol);
 374         struct wm8903_priv *wm8903 = snd_soc_component_get_drvdata(component);
 375         u16 reg;
 376         int ret;
 377 
 378         reg = snd_soc_component_read32(component, WM8903_CLASS_W_0);
 379 
 380         /* Turn it off if we're about to enable bypass */
 381         if (ucontrol->value.integer.value[0]) {
 382                 if (wm8903->class_w_users == 0) {
 383                         dev_dbg(component->dev, "Disabling Class W\n");
 384                         snd_soc_component_write(component, WM8903_CLASS_W_0, reg &
 385                                      ~(WM8903_CP_DYN_FREQ | WM8903_CP_DYN_V));
 386                 }
 387                 wm8903->class_w_users++;
 388         }
 389 
 390         /* Implement the change */
 391         ret = snd_soc_dapm_put_volsw(kcontrol, ucontrol);
 392 
 393         /* If we've just disabled the last bypass path turn Class W on */
 394         if (!ucontrol->value.integer.value[0]) {
 395                 if (wm8903->class_w_users == 1) {
 396                         dev_dbg(component->dev, "Enabling Class W\n");
 397                         snd_soc_component_write(component, WM8903_CLASS_W_0, reg |
 398                                      WM8903_CP_DYN_FREQ | WM8903_CP_DYN_V);
 399                 }
 400                 wm8903->class_w_users--;
 401         }
 402 
 403         dev_dbg(component->dev, "Bypass use count now %d\n",
 404                 wm8903->class_w_users);
 405 
 406         return ret;
 407 }
 408 
 409 #define SOC_DAPM_SINGLE_W(xname, reg, shift, max, invert) \
 410         SOC_SINGLE_EXT(xname, reg, shift, max, invert, \
 411                 snd_soc_dapm_get_volsw, wm8903_class_w_put)
 412 
 413 
 414 static int wm8903_deemph[] = { 0, 32000, 44100, 48000 };
 415 
 416 static int wm8903_set_deemph(struct snd_soc_component *component)
 417 {
 418         struct wm8903_priv *wm8903 = snd_soc_component_get_drvdata(component);
 419         int val, i, best;
 420 
 421         /* If we're using deemphasis select the nearest available sample
 422          * rate.
 423          */
 424         if (wm8903->deemph) {
 425                 best = 1;
 426                 for (i = 2; i < ARRAY_SIZE(wm8903_deemph); i++) {
 427                         if (abs(wm8903_deemph[i] - wm8903->fs) <
 428                             abs(wm8903_deemph[best] - wm8903->fs))
 429                                 best = i;
 430                 }
 431 
 432                 val = best << WM8903_DEEMPH_SHIFT;
 433         } else {
 434                 best = 0;
 435                 val = 0;
 436         }
 437 
 438         dev_dbg(component->dev, "Set deemphasis %d (%dHz)\n",
 439                 best, wm8903_deemph[best]);
 440 
 441         return snd_soc_component_update_bits(component, WM8903_DAC_DIGITAL_1,
 442                                    WM8903_DEEMPH_MASK, val);
 443 }
 444 
 445 static int wm8903_get_deemph(struct snd_kcontrol *kcontrol,
 446                              struct snd_ctl_elem_value *ucontrol)
 447 {
 448         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 449         struct wm8903_priv *wm8903 = snd_soc_component_get_drvdata(component);
 450 
 451         ucontrol->value.integer.value[0] = wm8903->deemph;
 452 
 453         return 0;
 454 }
 455 
 456 static int wm8903_put_deemph(struct snd_kcontrol *kcontrol,
 457                              struct snd_ctl_elem_value *ucontrol)
 458 {
 459         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 460         struct wm8903_priv *wm8903 = snd_soc_component_get_drvdata(component);
 461         unsigned int deemph = ucontrol->value.integer.value[0];
 462         int ret = 0;
 463 
 464         if (deemph > 1)
 465                 return -EINVAL;
 466 
 467         mutex_lock(&wm8903->lock);
 468         if (wm8903->deemph != deemph) {
 469                 wm8903->deemph = deemph;
 470 
 471                 wm8903_set_deemph(component);
 472 
 473                 ret = 1;
 474         }
 475         mutex_unlock(&wm8903->lock);
 476 
 477         return ret;
 478 }
 479 
 480 /* ALSA can only do steps of .01dB */
 481 static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1);
 482 
 483 static const DECLARE_TLV_DB_SCALE(dac_boost_tlv, 0, 600, 0);
 484 
 485 static const DECLARE_TLV_DB_SCALE(digital_sidetone_tlv, -3600, 300, 0);
 486 static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
 487 
 488 static const DECLARE_TLV_DB_SCALE(drc_tlv_thresh, 0, 75, 0);
 489 static const DECLARE_TLV_DB_SCALE(drc_tlv_amp, -2250, 75, 0);
 490 static const DECLARE_TLV_DB_SCALE(drc_tlv_min, 0, 600, 0);
 491 static const DECLARE_TLV_DB_SCALE(drc_tlv_max, 1200, 600, 0);
 492 static const DECLARE_TLV_DB_SCALE(drc_tlv_startup, -300, 50, 0);
 493 
 494 static const char *hpf_mode_text[] = {
 495         "Hi-fi", "Voice 1", "Voice 2", "Voice 3"
 496 };
 497 
 498 static SOC_ENUM_SINGLE_DECL(hpf_mode,
 499                             WM8903_ADC_DIGITAL_0, 5, hpf_mode_text);
 500 
 501 static const char *osr_text[] = {
 502         "Low power", "High performance"
 503 };
 504 
 505 static SOC_ENUM_SINGLE_DECL(adc_osr,
 506                             WM8903_ANALOGUE_ADC_0, 0, osr_text);
 507 
 508 static SOC_ENUM_SINGLE_DECL(dac_osr,
 509                             WM8903_DAC_DIGITAL_1, 0, osr_text);
 510 
 511 static const char *drc_slope_text[] = {
 512         "1", "1/2", "1/4", "1/8", "1/16", "0"
 513 };
 514 
 515 static SOC_ENUM_SINGLE_DECL(drc_slope_r0,
 516                             WM8903_DRC_2, 3, drc_slope_text);
 517 
 518 static SOC_ENUM_SINGLE_DECL(drc_slope_r1,
 519                             WM8903_DRC_2, 0, drc_slope_text);
 520 
 521 static const char *drc_attack_text[] = {
 522         "instantaneous",
 523         "363us", "762us", "1.45ms", "2.9ms", "5.8ms", "11.6ms", "23.2ms",
 524         "46.4ms", "92.8ms", "185.6ms"
 525 };
 526 
 527 static SOC_ENUM_SINGLE_DECL(drc_attack,
 528                             WM8903_DRC_1, 12, drc_attack_text);
 529 
 530 static const char *drc_decay_text[] = {
 531         "186ms", "372ms", "743ms", "1.49s", "2.97s", "5.94s", "11.89s",
 532         "23.87s", "47.56s"
 533 };
 534 
 535 static SOC_ENUM_SINGLE_DECL(drc_decay,
 536                             WM8903_DRC_1, 8, drc_decay_text);
 537 
 538 static const char *drc_ff_delay_text[] = {
 539         "5 samples", "9 samples"
 540 };
 541 
 542 static SOC_ENUM_SINGLE_DECL(drc_ff_delay,
 543                             WM8903_DRC_0, 5, drc_ff_delay_text);
 544 
 545 static const char *drc_qr_decay_text[] = {
 546         "0.725ms", "1.45ms", "5.8ms"
 547 };
 548 
 549 static SOC_ENUM_SINGLE_DECL(drc_qr_decay,
 550                             WM8903_DRC_1, 4, drc_qr_decay_text);
 551 
 552 static const char *drc_smoothing_text[] = {
 553         "Low", "Medium", "High"
 554 };
 555 
 556 static SOC_ENUM_SINGLE_DECL(drc_smoothing,
 557                             WM8903_DRC_0, 11, drc_smoothing_text);
 558 
 559 static const char *soft_mute_text[] = {
 560         "Fast (fs/2)", "Slow (fs/32)"
 561 };
 562 
 563 static SOC_ENUM_SINGLE_DECL(soft_mute,
 564                             WM8903_DAC_DIGITAL_1, 10, soft_mute_text);
 565 
 566 static const char *mute_mode_text[] = {
 567         "Hard", "Soft"
 568 };
 569 
 570 static SOC_ENUM_SINGLE_DECL(mute_mode,
 571                             WM8903_DAC_DIGITAL_1, 9, mute_mode_text);
 572 
 573 static const char *companding_text[] = {
 574         "ulaw", "alaw"
 575 };
 576 
 577 static SOC_ENUM_SINGLE_DECL(dac_companding,
 578                             WM8903_AUDIO_INTERFACE_0, 0, companding_text);
 579 
 580 static SOC_ENUM_SINGLE_DECL(adc_companding,
 581                             WM8903_AUDIO_INTERFACE_0, 2, companding_text);
 582 
 583 static const char *input_mode_text[] = {
 584         "Single-Ended", "Differential Line", "Differential Mic"
 585 };
 586 
 587 static SOC_ENUM_SINGLE_DECL(linput_mode_enum,
 588                             WM8903_ANALOGUE_LEFT_INPUT_1, 0, input_mode_text);
 589 
 590 static SOC_ENUM_SINGLE_DECL(rinput_mode_enum,
 591                             WM8903_ANALOGUE_RIGHT_INPUT_1, 0, input_mode_text);
 592 
 593 static const char *linput_mux_text[] = {
 594         "IN1L", "IN2L", "IN3L"
 595 };
 596 
 597 static SOC_ENUM_SINGLE_DECL(linput_enum,
 598                             WM8903_ANALOGUE_LEFT_INPUT_1, 2, linput_mux_text);
 599 
 600 static SOC_ENUM_SINGLE_DECL(linput_inv_enum,
 601                             WM8903_ANALOGUE_LEFT_INPUT_1, 4, linput_mux_text);
 602 
 603 static const char *rinput_mux_text[] = {
 604         "IN1R", "IN2R", "IN3R"
 605 };
 606 
 607 static SOC_ENUM_SINGLE_DECL(rinput_enum,
 608                             WM8903_ANALOGUE_RIGHT_INPUT_1, 2, rinput_mux_text);
 609 
 610 static SOC_ENUM_SINGLE_DECL(rinput_inv_enum,
 611                             WM8903_ANALOGUE_RIGHT_INPUT_1, 4, rinput_mux_text);
 612 
 613 
 614 static const char *sidetone_text[] = {
 615         "None", "Left", "Right"
 616 };
 617 
 618 static SOC_ENUM_SINGLE_DECL(lsidetone_enum,
 619                             WM8903_DAC_DIGITAL_0, 2, sidetone_text);
 620 
 621 static SOC_ENUM_SINGLE_DECL(rsidetone_enum,
 622                             WM8903_DAC_DIGITAL_0, 0, sidetone_text);
 623 
 624 static const char *adcinput_text[] = {
 625         "ADC", "DMIC"
 626 };
 627 
 628 static SOC_ENUM_SINGLE_DECL(adcinput_enum,
 629                             WM8903_CLOCK_RATE_TEST_4, 9, adcinput_text);
 630 
 631 static const char *aif_text[] = {
 632         "Left", "Right"
 633 };
 634 
 635 static SOC_ENUM_SINGLE_DECL(lcapture_enum,
 636                             WM8903_AUDIO_INTERFACE_0, 7, aif_text);
 637 
 638 static SOC_ENUM_SINGLE_DECL(rcapture_enum,
 639                             WM8903_AUDIO_INTERFACE_0, 6, aif_text);
 640 
 641 static SOC_ENUM_SINGLE_DECL(lplay_enum,
 642                             WM8903_AUDIO_INTERFACE_0, 5, aif_text);
 643 
 644 static SOC_ENUM_SINGLE_DECL(rplay_enum,
 645                             WM8903_AUDIO_INTERFACE_0, 4, aif_text);
 646 
 647 static const struct snd_kcontrol_new wm8903_snd_controls[] = {
 648 
 649 /* Input PGAs - No TLV since the scale depends on PGA mode */
 650 SOC_SINGLE("Left Input PGA Switch", WM8903_ANALOGUE_LEFT_INPUT_0,
 651            7, 1, 1),
 652 SOC_SINGLE("Left Input PGA Volume", WM8903_ANALOGUE_LEFT_INPUT_0,
 653            0, 31, 0),
 654 SOC_SINGLE("Left Input PGA Common Mode Switch", WM8903_ANALOGUE_LEFT_INPUT_1,
 655            6, 1, 0),
 656 
 657 SOC_SINGLE("Right Input PGA Switch", WM8903_ANALOGUE_RIGHT_INPUT_0,
 658            7, 1, 1),
 659 SOC_SINGLE("Right Input PGA Volume", WM8903_ANALOGUE_RIGHT_INPUT_0,
 660            0, 31, 0),
 661 SOC_SINGLE("Right Input PGA Common Mode Switch", WM8903_ANALOGUE_RIGHT_INPUT_1,
 662            6, 1, 0),
 663 
 664 /* ADCs */
 665 SOC_ENUM("ADC OSR", adc_osr),
 666 SOC_SINGLE("HPF Switch", WM8903_ADC_DIGITAL_0, 4, 1, 0),
 667 SOC_ENUM("HPF Mode", hpf_mode),
 668 SOC_SINGLE("DRC Switch", WM8903_DRC_0, 15, 1, 0),
 669 SOC_ENUM("DRC Compressor Slope R0", drc_slope_r0),
 670 SOC_ENUM("DRC Compressor Slope R1", drc_slope_r1),
 671 SOC_SINGLE_TLV("DRC Compressor Threshold Volume", WM8903_DRC_3, 5, 124, 1,
 672                drc_tlv_thresh),
 673 SOC_SINGLE_TLV("DRC Volume", WM8903_DRC_3, 0, 30, 1, drc_tlv_amp),
 674 SOC_SINGLE_TLV("DRC Minimum Gain Volume", WM8903_DRC_1, 2, 3, 1, drc_tlv_min),
 675 SOC_SINGLE_TLV("DRC Maximum Gain Volume", WM8903_DRC_1, 0, 3, 0, drc_tlv_max),
 676 SOC_ENUM("DRC Attack Rate", drc_attack),
 677 SOC_ENUM("DRC Decay Rate", drc_decay),
 678 SOC_ENUM("DRC FF Delay", drc_ff_delay),
 679 SOC_SINGLE("DRC Anticlip Switch", WM8903_DRC_0, 1, 1, 0),
 680 SOC_SINGLE("DRC QR Switch", WM8903_DRC_0, 2, 1, 0),
 681 SOC_SINGLE_TLV("DRC QR Threshold Volume", WM8903_DRC_0, 6, 3, 0, drc_tlv_max),
 682 SOC_ENUM("DRC QR Decay Rate", drc_qr_decay),
 683 SOC_SINGLE("DRC Smoothing Switch", WM8903_DRC_0, 3, 1, 0),
 684 SOC_SINGLE("DRC Smoothing Hysteresis Switch", WM8903_DRC_0, 0, 1, 0),
 685 SOC_ENUM("DRC Smoothing Threshold", drc_smoothing),
 686 SOC_SINGLE_TLV("DRC Startup Volume", WM8903_DRC_0, 6, 18, 0, drc_tlv_startup),
 687 
 688 SOC_DOUBLE_R_TLV("Digital Capture Volume", WM8903_ADC_DIGITAL_VOLUME_LEFT,
 689                  WM8903_ADC_DIGITAL_VOLUME_RIGHT, 1, 120, 0, digital_tlv),
 690 SOC_ENUM("ADC Companding Mode", adc_companding),
 691 SOC_SINGLE("ADC Companding Switch", WM8903_AUDIO_INTERFACE_0, 3, 1, 0),
 692 
 693 SOC_DOUBLE_TLV("Digital Sidetone Volume", WM8903_DAC_DIGITAL_0, 4, 8,
 694                12, 0, digital_sidetone_tlv),
 695 
 696 /* DAC */
 697 SOC_ENUM("DAC OSR", dac_osr),
 698 SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8903_DAC_DIGITAL_VOLUME_LEFT,
 699                  WM8903_DAC_DIGITAL_VOLUME_RIGHT, 1, 120, 0, digital_tlv),
 700 SOC_ENUM("DAC Soft Mute Rate", soft_mute),
 701 SOC_ENUM("DAC Mute Mode", mute_mode),
 702 SOC_SINGLE("DAC Mono Switch", WM8903_DAC_DIGITAL_1, 12, 1, 0),
 703 SOC_ENUM("DAC Companding Mode", dac_companding),
 704 SOC_SINGLE("DAC Companding Switch", WM8903_AUDIO_INTERFACE_0, 1, 1, 0),
 705 SOC_SINGLE_TLV("DAC Boost Volume", WM8903_AUDIO_INTERFACE_0, 9, 3, 0,
 706                dac_boost_tlv),
 707 SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0,
 708                     wm8903_get_deemph, wm8903_put_deemph),
 709 
 710 /* Headphones */
 711 SOC_DOUBLE_R("Headphone Switch",
 712              WM8903_ANALOGUE_OUT1_LEFT, WM8903_ANALOGUE_OUT1_RIGHT,
 713              8, 1, 1),
 714 SOC_DOUBLE_R("Headphone ZC Switch",
 715              WM8903_ANALOGUE_OUT1_LEFT, WM8903_ANALOGUE_OUT1_RIGHT,
 716              6, 1, 0),
 717 SOC_DOUBLE_R_TLV("Headphone Volume",
 718                  WM8903_ANALOGUE_OUT1_LEFT, WM8903_ANALOGUE_OUT1_RIGHT,
 719                  0, 63, 0, out_tlv),
 720 
 721 /* Line out */
 722 SOC_DOUBLE_R("Line Out Switch",
 723              WM8903_ANALOGUE_OUT2_LEFT, WM8903_ANALOGUE_OUT2_RIGHT,
 724              8, 1, 1),
 725 SOC_DOUBLE_R("Line Out ZC Switch",
 726              WM8903_ANALOGUE_OUT2_LEFT, WM8903_ANALOGUE_OUT2_RIGHT,
 727              6, 1, 0),
 728 SOC_DOUBLE_R_TLV("Line Out Volume",
 729                  WM8903_ANALOGUE_OUT2_LEFT, WM8903_ANALOGUE_OUT2_RIGHT,
 730                  0, 63, 0, out_tlv),
 731 
 732 /* Speaker */
 733 SOC_DOUBLE_R("Speaker Switch",
 734              WM8903_ANALOGUE_OUT3_LEFT, WM8903_ANALOGUE_OUT3_RIGHT, 8, 1, 1),
 735 SOC_DOUBLE_R("Speaker ZC Switch",
 736              WM8903_ANALOGUE_OUT3_LEFT, WM8903_ANALOGUE_OUT3_RIGHT, 6, 1, 0),
 737 SOC_DOUBLE_R_TLV("Speaker Volume",
 738                  WM8903_ANALOGUE_OUT3_LEFT, WM8903_ANALOGUE_OUT3_RIGHT,
 739                  0, 63, 0, out_tlv),
 740 };
 741 
 742 static const struct snd_kcontrol_new linput_mode_mux =
 743         SOC_DAPM_ENUM("Left Input Mode Mux", linput_mode_enum);
 744 
 745 static const struct snd_kcontrol_new rinput_mode_mux =
 746         SOC_DAPM_ENUM("Right Input Mode Mux", rinput_mode_enum);
 747 
 748 static const struct snd_kcontrol_new linput_mux =
 749         SOC_DAPM_ENUM("Left Input Mux", linput_enum);
 750 
 751 static const struct snd_kcontrol_new linput_inv_mux =
 752         SOC_DAPM_ENUM("Left Inverting Input Mux", linput_inv_enum);
 753 
 754 static const struct snd_kcontrol_new rinput_mux =
 755         SOC_DAPM_ENUM("Right Input Mux", rinput_enum);
 756 
 757 static const struct snd_kcontrol_new rinput_inv_mux =
 758         SOC_DAPM_ENUM("Right Inverting Input Mux", rinput_inv_enum);
 759 
 760 static const struct snd_kcontrol_new lsidetone_mux =
 761         SOC_DAPM_ENUM("DACL Sidetone Mux", lsidetone_enum);
 762 
 763 static const struct snd_kcontrol_new rsidetone_mux =
 764         SOC_DAPM_ENUM("DACR Sidetone Mux", rsidetone_enum);
 765 
 766 static const struct snd_kcontrol_new adcinput_mux =
 767         SOC_DAPM_ENUM("ADC Input", adcinput_enum);
 768 
 769 static const struct snd_kcontrol_new lcapture_mux =
 770         SOC_DAPM_ENUM("Left Capture Mux", lcapture_enum);
 771 
 772 static const struct snd_kcontrol_new rcapture_mux =
 773         SOC_DAPM_ENUM("Right Capture Mux", rcapture_enum);
 774 
 775 static const struct snd_kcontrol_new lplay_mux =
 776         SOC_DAPM_ENUM("Left Playback Mux", lplay_enum);
 777 
 778 static const struct snd_kcontrol_new rplay_mux =
 779         SOC_DAPM_ENUM("Right Playback Mux", rplay_enum);
 780 
 781 static const struct snd_kcontrol_new left_output_mixer[] = {
 782 SOC_DAPM_SINGLE("DACL Switch", WM8903_ANALOGUE_LEFT_MIX_0, 3, 1, 0),
 783 SOC_DAPM_SINGLE("DACR Switch", WM8903_ANALOGUE_LEFT_MIX_0, 2, 1, 0),
 784 SOC_DAPM_SINGLE_W("Left Bypass Switch", WM8903_ANALOGUE_LEFT_MIX_0, 1, 1, 0),
 785 SOC_DAPM_SINGLE_W("Right Bypass Switch", WM8903_ANALOGUE_LEFT_MIX_0, 0, 1, 0),
 786 };
 787 
 788 static const struct snd_kcontrol_new right_output_mixer[] = {
 789 SOC_DAPM_SINGLE("DACL Switch", WM8903_ANALOGUE_RIGHT_MIX_0, 3, 1, 0),
 790 SOC_DAPM_SINGLE("DACR Switch", WM8903_ANALOGUE_RIGHT_MIX_0, 2, 1, 0),
 791 SOC_DAPM_SINGLE_W("Left Bypass Switch", WM8903_ANALOGUE_RIGHT_MIX_0, 1, 1, 0),
 792 SOC_DAPM_SINGLE_W("Right Bypass Switch", WM8903_ANALOGUE_RIGHT_MIX_0, 0, 1, 0),
 793 };
 794 
 795 static const struct snd_kcontrol_new left_speaker_mixer[] = {
 796 SOC_DAPM_SINGLE("DACL Switch", WM8903_ANALOGUE_SPK_MIX_LEFT_0, 3, 1, 0),
 797 SOC_DAPM_SINGLE("DACR Switch", WM8903_ANALOGUE_SPK_MIX_LEFT_0, 2, 1, 0),
 798 SOC_DAPM_SINGLE("Left Bypass Switch", WM8903_ANALOGUE_SPK_MIX_LEFT_0, 1, 1, 0),
 799 SOC_DAPM_SINGLE("Right Bypass Switch", WM8903_ANALOGUE_SPK_MIX_LEFT_0,
 800                 0, 1, 0),
 801 };
 802 
 803 static const struct snd_kcontrol_new right_speaker_mixer[] = {
 804 SOC_DAPM_SINGLE("DACL Switch", WM8903_ANALOGUE_SPK_MIX_RIGHT_0, 3, 1, 0),
 805 SOC_DAPM_SINGLE("DACR Switch", WM8903_ANALOGUE_SPK_MIX_RIGHT_0, 2, 1, 0),
 806 SOC_DAPM_SINGLE("Left Bypass Switch", WM8903_ANALOGUE_SPK_MIX_RIGHT_0,
 807                 1, 1, 0),
 808 SOC_DAPM_SINGLE("Right Bypass Switch", WM8903_ANALOGUE_SPK_MIX_RIGHT_0,
 809                 0, 1, 0),
 810 };
 811 
 812 static const struct snd_soc_dapm_widget wm8903_dapm_widgets[] = {
 813 SND_SOC_DAPM_INPUT("IN1L"),
 814 SND_SOC_DAPM_INPUT("IN1R"),
 815 SND_SOC_DAPM_INPUT("IN2L"),
 816 SND_SOC_DAPM_INPUT("IN2R"),
 817 SND_SOC_DAPM_INPUT("IN3L"),
 818 SND_SOC_DAPM_INPUT("IN3R"),
 819 SND_SOC_DAPM_INPUT("DMICDAT"),
 820 
 821 SND_SOC_DAPM_OUTPUT("HPOUTL"),
 822 SND_SOC_DAPM_OUTPUT("HPOUTR"),
 823 SND_SOC_DAPM_OUTPUT("LINEOUTL"),
 824 SND_SOC_DAPM_OUTPUT("LINEOUTR"),
 825 SND_SOC_DAPM_OUTPUT("LOP"),
 826 SND_SOC_DAPM_OUTPUT("LON"),
 827 SND_SOC_DAPM_OUTPUT("ROP"),
 828 SND_SOC_DAPM_OUTPUT("RON"),
 829 
 830 SND_SOC_DAPM_SUPPLY("MICBIAS", WM8903_MIC_BIAS_CONTROL_0, 0, 0, NULL, 0),
 831 
 832 SND_SOC_DAPM_MUX("Left Input Mux", SND_SOC_NOPM, 0, 0, &linput_mux),
 833 SND_SOC_DAPM_MUX("Left Input Inverting Mux", SND_SOC_NOPM, 0, 0,
 834                  &linput_inv_mux),
 835 SND_SOC_DAPM_MUX("Left Input Mode Mux", SND_SOC_NOPM, 0, 0, &linput_mode_mux),
 836 
 837 SND_SOC_DAPM_MUX("Right Input Mux", SND_SOC_NOPM, 0, 0, &rinput_mux),
 838 SND_SOC_DAPM_MUX("Right Input Inverting Mux", SND_SOC_NOPM, 0, 0,
 839                  &rinput_inv_mux),
 840 SND_SOC_DAPM_MUX("Right Input Mode Mux", SND_SOC_NOPM, 0, 0, &rinput_mode_mux),
 841 
 842 SND_SOC_DAPM_PGA("Left Input PGA", WM8903_POWER_MANAGEMENT_0, 1, 0, NULL, 0),
 843 SND_SOC_DAPM_PGA("Right Input PGA", WM8903_POWER_MANAGEMENT_0, 0, 0, NULL, 0),
 844 
 845 SND_SOC_DAPM_MUX("Left ADC Input", SND_SOC_NOPM, 0, 0, &adcinput_mux),
 846 SND_SOC_DAPM_MUX("Right ADC Input", SND_SOC_NOPM, 0, 0, &adcinput_mux),
 847 
 848 SND_SOC_DAPM_ADC("ADCL", NULL, WM8903_POWER_MANAGEMENT_6, 1, 0),
 849 SND_SOC_DAPM_ADC("ADCR", NULL, WM8903_POWER_MANAGEMENT_6, 0, 0),
 850 
 851 SND_SOC_DAPM_MUX("Left Capture Mux", SND_SOC_NOPM, 0, 0, &lcapture_mux),
 852 SND_SOC_DAPM_MUX("Right Capture Mux", SND_SOC_NOPM, 0, 0, &rcapture_mux),
 853 
 854 SND_SOC_DAPM_AIF_OUT("AIFTXL", "Left HiFi Capture", 0, SND_SOC_NOPM, 0, 0),
 855 SND_SOC_DAPM_AIF_OUT("AIFTXR", "Right HiFi Capture", 0, SND_SOC_NOPM, 0, 0),
 856 
 857 SND_SOC_DAPM_MUX("DACL Sidetone", SND_SOC_NOPM, 0, 0, &lsidetone_mux),
 858 SND_SOC_DAPM_MUX("DACR Sidetone", SND_SOC_NOPM, 0, 0, &rsidetone_mux),
 859 
 860 SND_SOC_DAPM_AIF_IN("AIFRXL", "Left Playback", 0, SND_SOC_NOPM, 0, 0),
 861 SND_SOC_DAPM_AIF_IN("AIFRXR", "Right Playback", 0, SND_SOC_NOPM, 0, 0),
 862 
 863 SND_SOC_DAPM_MUX("Left Playback Mux", SND_SOC_NOPM, 0, 0, &lplay_mux),
 864 SND_SOC_DAPM_MUX("Right Playback Mux", SND_SOC_NOPM, 0, 0, &rplay_mux),
 865 
 866 SND_SOC_DAPM_DAC("DACL", NULL, WM8903_POWER_MANAGEMENT_6, 3, 0),
 867 SND_SOC_DAPM_DAC("DACR", NULL, WM8903_POWER_MANAGEMENT_6, 2, 0),
 868 
 869 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8903_POWER_MANAGEMENT_1, 1, 0,
 870                    left_output_mixer, ARRAY_SIZE(left_output_mixer)),
 871 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8903_POWER_MANAGEMENT_1, 0, 0,
 872                    right_output_mixer, ARRAY_SIZE(right_output_mixer)),
 873 
 874 SND_SOC_DAPM_MIXER("Left Speaker Mixer", WM8903_POWER_MANAGEMENT_4, 1, 0,
 875                    left_speaker_mixer, ARRAY_SIZE(left_speaker_mixer)),
 876 SND_SOC_DAPM_MIXER("Right Speaker Mixer", WM8903_POWER_MANAGEMENT_4, 0, 0,
 877                    right_speaker_mixer, ARRAY_SIZE(right_speaker_mixer)),
 878 
 879 SND_SOC_DAPM_PGA_S("Left Headphone Output PGA", 0, WM8903_POWER_MANAGEMENT_2,
 880                    1, 0, NULL, 0),
 881 SND_SOC_DAPM_PGA_S("Right Headphone Output PGA", 0, WM8903_POWER_MANAGEMENT_2,
 882                    0, 0, NULL, 0),
 883 
 884 SND_SOC_DAPM_PGA_S("Left Line Output PGA", 0, WM8903_POWER_MANAGEMENT_3, 1, 0,
 885                    NULL, 0),
 886 SND_SOC_DAPM_PGA_S("Right Line Output PGA", 0, WM8903_POWER_MANAGEMENT_3, 0, 0,
 887                    NULL, 0),
 888 
 889 SND_SOC_DAPM_PGA_S("HPL_RMV_SHORT", 4, WM8903_ANALOGUE_HP_0, 7, 0, NULL, 0),
 890 SND_SOC_DAPM_PGA_S("HPL_ENA_OUTP", 3, WM8903_ANALOGUE_HP_0, 6, 0, NULL, 0),
 891 SND_SOC_DAPM_PGA_S("HPL_ENA_DLY", 2, WM8903_ANALOGUE_HP_0, 5, 0, NULL, 0),
 892 SND_SOC_DAPM_PGA_S("HPL_ENA", 1, WM8903_ANALOGUE_HP_0, 4, 0, NULL, 0),
 893 SND_SOC_DAPM_PGA_S("HPR_RMV_SHORT", 4, WM8903_ANALOGUE_HP_0, 3, 0, NULL, 0),
 894 SND_SOC_DAPM_PGA_S("HPR_ENA_OUTP", 3, WM8903_ANALOGUE_HP_0, 2, 0, NULL, 0),
 895 SND_SOC_DAPM_PGA_S("HPR_ENA_DLY", 2, WM8903_ANALOGUE_HP_0, 1, 0, NULL, 0),
 896 SND_SOC_DAPM_PGA_S("HPR_ENA", 1, WM8903_ANALOGUE_HP_0, 0, 0, NULL, 0),
 897 
 898 SND_SOC_DAPM_PGA_S("LINEOUTL_RMV_SHORT", 4, WM8903_ANALOGUE_LINEOUT_0, 7, 0,
 899                    NULL, 0),
 900 SND_SOC_DAPM_PGA_S("LINEOUTL_ENA_OUTP", 3, WM8903_ANALOGUE_LINEOUT_0, 6, 0,
 901                    NULL, 0),
 902 SND_SOC_DAPM_PGA_S("LINEOUTL_ENA_DLY", 2, WM8903_ANALOGUE_LINEOUT_0, 5, 0,
 903                    NULL, 0),
 904 SND_SOC_DAPM_PGA_S("LINEOUTL_ENA", 1, WM8903_ANALOGUE_LINEOUT_0, 4, 0,
 905                    NULL, 0),
 906 SND_SOC_DAPM_PGA_S("LINEOUTR_RMV_SHORT", 4, WM8903_ANALOGUE_LINEOUT_0, 3, 0,
 907                    NULL, 0),
 908 SND_SOC_DAPM_PGA_S("LINEOUTR_ENA_OUTP", 3, WM8903_ANALOGUE_LINEOUT_0, 2, 0,
 909                    NULL, 0),
 910 SND_SOC_DAPM_PGA_S("LINEOUTR_ENA_DLY", 2, WM8903_ANALOGUE_LINEOUT_0, 1, 0,
 911                    NULL, 0),
 912 SND_SOC_DAPM_PGA_S("LINEOUTR_ENA", 1, WM8903_ANALOGUE_LINEOUT_0, 0, 0,
 913                    NULL, 0),
 914 
 915 SND_SOC_DAPM_SUPPLY("DCS Master", WM8903_DC_SERVO_0, 4, 0, NULL, 0),
 916 SND_SOC_DAPM_PGA_S("HPL_DCS", 3, SND_SOC_NOPM, 3, 0, wm8903_dcs_event,
 917                    SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
 918 SND_SOC_DAPM_PGA_S("HPR_DCS", 3, SND_SOC_NOPM, 2, 0, wm8903_dcs_event,
 919                    SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
 920 SND_SOC_DAPM_PGA_S("LINEOUTL_DCS", 3, SND_SOC_NOPM, 1, 0, wm8903_dcs_event,
 921                    SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
 922 SND_SOC_DAPM_PGA_S("LINEOUTR_DCS", 3, SND_SOC_NOPM, 0, 0, wm8903_dcs_event,
 923                    SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
 924 
 925 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8903_POWER_MANAGEMENT_5, 1, 0,
 926                  NULL, 0),
 927 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8903_POWER_MANAGEMENT_5, 0, 0,
 928                  NULL, 0),
 929 
 930 SND_SOC_DAPM_SUPPLY("Charge Pump", WM8903_CHARGE_PUMP_0, 0, 0,
 931                     wm8903_cp_event, SND_SOC_DAPM_POST_PMU),
 932 SND_SOC_DAPM_SUPPLY("CLK_DSP", WM8903_CLOCK_RATES_2, 1, 0, NULL, 0),
 933 SND_SOC_DAPM_SUPPLY("CLK_SYS", WM8903_CLOCK_RATES_2, 2, 0, NULL, 0),
 934 };
 935 
 936 static const struct snd_soc_dapm_route wm8903_intercon[] = {
 937 
 938         { "CLK_DSP", NULL, "CLK_SYS" },
 939         { "MICBIAS", NULL, "CLK_SYS" },
 940         { "HPL_DCS", NULL, "CLK_SYS" },
 941         { "HPR_DCS", NULL, "CLK_SYS" },
 942         { "LINEOUTL_DCS", NULL, "CLK_SYS" },
 943         { "LINEOUTR_DCS", NULL, "CLK_SYS" },
 944 
 945         { "Left Input Mux", "IN1L", "IN1L" },
 946         { "Left Input Mux", "IN2L", "IN2L" },
 947         { "Left Input Mux", "IN3L", "IN3L" },
 948 
 949         { "Left Input Inverting Mux", "IN1L", "IN1L" },
 950         { "Left Input Inverting Mux", "IN2L", "IN2L" },
 951         { "Left Input Inverting Mux", "IN3L", "IN3L" },
 952 
 953         { "Right Input Mux", "IN1R", "IN1R" },
 954         { "Right Input Mux", "IN2R", "IN2R" },
 955         { "Right Input Mux", "IN3R", "IN3R" },
 956 
 957         { "Right Input Inverting Mux", "IN1R", "IN1R" },
 958         { "Right Input Inverting Mux", "IN2R", "IN2R" },
 959         { "Right Input Inverting Mux", "IN3R", "IN3R" },
 960 
 961         { "Left Input Mode Mux", "Single-Ended", "Left Input Inverting Mux" },
 962         { "Left Input Mode Mux", "Differential Line",
 963           "Left Input Mux" },
 964         { "Left Input Mode Mux", "Differential Line",
 965           "Left Input Inverting Mux" },
 966         { "Left Input Mode Mux", "Differential Mic",
 967           "Left Input Mux" },
 968         { "Left Input Mode Mux", "Differential Mic",
 969           "Left Input Inverting Mux" },
 970 
 971         { "Right Input Mode Mux", "Single-Ended",
 972           "Right Input Inverting Mux" },
 973         { "Right Input Mode Mux", "Differential Line",
 974           "Right Input Mux" },
 975         { "Right Input Mode Mux", "Differential Line",
 976           "Right Input Inverting Mux" },
 977         { "Right Input Mode Mux", "Differential Mic",
 978           "Right Input Mux" },
 979         { "Right Input Mode Mux", "Differential Mic",
 980           "Right Input Inverting Mux" },
 981 
 982         { "Left Input PGA", NULL, "Left Input Mode Mux" },
 983         { "Right Input PGA", NULL, "Right Input Mode Mux" },
 984 
 985         { "Left ADC Input", "ADC", "Left Input PGA" },
 986         { "Left ADC Input", "DMIC", "DMICDAT" },
 987         { "Right ADC Input", "ADC", "Right Input PGA" },
 988         { "Right ADC Input", "DMIC", "DMICDAT" },
 989 
 990         { "Left Capture Mux", "Left", "ADCL" },
 991         { "Left Capture Mux", "Right", "ADCR" },
 992 
 993         { "Right Capture Mux", "Left", "ADCL" },
 994         { "Right Capture Mux", "Right", "ADCR" },
 995 
 996         { "AIFTXL", NULL, "Left Capture Mux" },
 997         { "AIFTXR", NULL, "Right Capture Mux" },
 998 
 999         { "ADCL", NULL, "Left ADC Input" },
1000         { "ADCL", NULL, "CLK_DSP" },
1001         { "ADCR", NULL, "Right ADC Input" },
1002         { "ADCR", NULL, "CLK_DSP" },
1003 
1004         { "Left Playback Mux", "Left", "AIFRXL" },
1005         { "Left Playback Mux", "Right", "AIFRXR" },
1006 
1007         { "Right Playback Mux", "Left", "AIFRXL" },
1008         { "Right Playback Mux", "Right", "AIFRXR" },
1009 
1010         { "DACL Sidetone", "Left", "ADCL" },
1011         { "DACL Sidetone", "Right", "ADCR" },
1012         { "DACR Sidetone", "Left", "ADCL" },
1013         { "DACR Sidetone", "Right", "ADCR" },
1014 
1015         { "DACL", NULL, "Left Playback Mux" },
1016         { "DACL", NULL, "DACL Sidetone" },
1017         { "DACL", NULL, "CLK_DSP" },
1018 
1019         { "DACR", NULL, "Right Playback Mux" },
1020         { "DACR", NULL, "DACR Sidetone" },
1021         { "DACR", NULL, "CLK_DSP" },
1022 
1023         { "Left Output Mixer", "Left Bypass Switch", "Left Input PGA" },
1024         { "Left Output Mixer", "Right Bypass Switch", "Right Input PGA" },
1025         { "Left Output Mixer", "DACL Switch", "DACL" },
1026         { "Left Output Mixer", "DACR Switch", "DACR" },
1027 
1028         { "Right Output Mixer", "Left Bypass Switch", "Left Input PGA" },
1029         { "Right Output Mixer", "Right Bypass Switch", "Right Input PGA" },
1030         { "Right Output Mixer", "DACL Switch", "DACL" },
1031         { "Right Output Mixer", "DACR Switch", "DACR" },
1032 
1033         { "Left Speaker Mixer", "Left Bypass Switch", "Left Input PGA" },
1034         { "Left Speaker Mixer", "Right Bypass Switch", "Right Input PGA" },
1035         { "Left Speaker Mixer", "DACL Switch", "DACL" },
1036         { "Left Speaker Mixer", "DACR Switch", "DACR" },
1037 
1038         { "Right Speaker Mixer", "Left Bypass Switch", "Left Input PGA" },
1039         { "Right Speaker Mixer", "Right Bypass Switch", "Right Input PGA" },
1040         { "Right Speaker Mixer", "DACL Switch", "DACL" },
1041         { "Right Speaker Mixer", "DACR Switch", "DACR" },
1042 
1043         { "Left Line Output PGA", NULL, "Left Output Mixer" },
1044         { "Right Line Output PGA", NULL, "Right Output Mixer" },
1045 
1046         { "Left Headphone Output PGA", NULL, "Left Output Mixer" },
1047         { "Right Headphone Output PGA", NULL, "Right Output Mixer" },
1048 
1049         { "Left Speaker PGA", NULL, "Left Speaker Mixer" },
1050         { "Right Speaker PGA", NULL, "Right Speaker Mixer" },
1051 
1052         { "HPL_ENA", NULL, "Left Headphone Output PGA" },
1053         { "HPR_ENA", NULL, "Right Headphone Output PGA" },
1054         { "HPL_ENA_DLY", NULL, "HPL_ENA" },
1055         { "HPR_ENA_DLY", NULL, "HPR_ENA" },
1056         { "LINEOUTL_ENA", NULL, "Left Line Output PGA" },
1057         { "LINEOUTR_ENA", NULL, "Right Line Output PGA" },
1058         { "LINEOUTL_ENA_DLY", NULL, "LINEOUTL_ENA" },
1059         { "LINEOUTR_ENA_DLY", NULL, "LINEOUTR_ENA" },
1060 
1061         { "HPL_DCS", NULL, "DCS Master" },
1062         { "HPR_DCS", NULL, "DCS Master" },
1063         { "LINEOUTL_DCS", NULL, "DCS Master" },
1064         { "LINEOUTR_DCS", NULL, "DCS Master" },
1065 
1066         { "HPL_DCS", NULL, "HPL_ENA_DLY" },
1067         { "HPR_DCS", NULL, "HPR_ENA_DLY" },
1068         { "LINEOUTL_DCS", NULL, "LINEOUTL_ENA_DLY" },
1069         { "LINEOUTR_DCS", NULL, "LINEOUTR_ENA_DLY" },
1070 
1071         { "HPL_ENA_OUTP", NULL, "HPL_DCS" },
1072         { "HPR_ENA_OUTP", NULL, "HPR_DCS" },
1073         { "LINEOUTL_ENA_OUTP", NULL, "LINEOUTL_DCS" },
1074         { "LINEOUTR_ENA_OUTP", NULL, "LINEOUTR_DCS" },
1075 
1076         { "HPL_RMV_SHORT", NULL, "HPL_ENA_OUTP" },
1077         { "HPR_RMV_SHORT", NULL, "HPR_ENA_OUTP" },
1078         { "LINEOUTL_RMV_SHORT", NULL, "LINEOUTL_ENA_OUTP" },
1079         { "LINEOUTR_RMV_SHORT", NULL, "LINEOUTR_ENA_OUTP" },
1080 
1081         { "HPOUTL", NULL, "HPL_RMV_SHORT" },
1082         { "HPOUTR", NULL, "HPR_RMV_SHORT" },
1083         { "LINEOUTL", NULL, "LINEOUTL_RMV_SHORT" },
1084         { "LINEOUTR", NULL, "LINEOUTR_RMV_SHORT" },
1085 
1086         { "LOP", NULL, "Left Speaker PGA" },
1087         { "LON", NULL, "Left Speaker PGA" },
1088 
1089         { "ROP", NULL, "Right Speaker PGA" },
1090         { "RON", NULL, "Right Speaker PGA" },
1091 
1092         { "Charge Pump", NULL, "CLK_DSP" },
1093 
1094         { "Left Headphone Output PGA", NULL, "Charge Pump" },
1095         { "Right Headphone Output PGA", NULL, "Charge Pump" },
1096         { "Left Line Output PGA", NULL, "Charge Pump" },
1097         { "Right Line Output PGA", NULL, "Charge Pump" },
1098 };
1099 
1100 static int wm8903_set_bias_level(struct snd_soc_component *component,
1101                                  enum snd_soc_bias_level level)
1102 {
1103         switch (level) {
1104         case SND_SOC_BIAS_ON:
1105                 break;
1106 
1107         case SND_SOC_BIAS_PREPARE:
1108                 snd_soc_component_update_bits(component, WM8903_VMID_CONTROL_0,
1109                                     WM8903_VMID_RES_MASK,
1110                                     WM8903_VMID_RES_50K);
1111                 break;
1112 
1113         case SND_SOC_BIAS_STANDBY:
1114                 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
1115                         snd_soc_component_update_bits(component, WM8903_BIAS_CONTROL_0,
1116                                             WM8903_POBCTRL | WM8903_ISEL_MASK |
1117                                             WM8903_STARTUP_BIAS_ENA |
1118                                             WM8903_BIAS_ENA,
1119                                             WM8903_POBCTRL |
1120                                             (2 << WM8903_ISEL_SHIFT) |
1121                                             WM8903_STARTUP_BIAS_ENA);
1122 
1123                         snd_soc_component_update_bits(component,
1124                                             WM8903_ANALOGUE_SPK_OUTPUT_CONTROL_0,
1125                                             WM8903_SPK_DISCHARGE,
1126                                             WM8903_SPK_DISCHARGE);
1127 
1128                         msleep(33);
1129 
1130                         snd_soc_component_update_bits(component, WM8903_POWER_MANAGEMENT_5,
1131                                             WM8903_SPKL_ENA | WM8903_SPKR_ENA,
1132                                             WM8903_SPKL_ENA | WM8903_SPKR_ENA);
1133 
1134                         snd_soc_component_update_bits(component,
1135                                             WM8903_ANALOGUE_SPK_OUTPUT_CONTROL_0,
1136                                             WM8903_SPK_DISCHARGE, 0);
1137 
1138                         snd_soc_component_update_bits(component, WM8903_VMID_CONTROL_0,
1139                                             WM8903_VMID_TIE_ENA |
1140                                             WM8903_BUFIO_ENA |
1141                                             WM8903_VMID_IO_ENA |
1142                                             WM8903_VMID_SOFT_MASK |
1143                                             WM8903_VMID_RES_MASK |
1144                                             WM8903_VMID_BUF_ENA,
1145                                             WM8903_VMID_TIE_ENA |
1146                                             WM8903_BUFIO_ENA |
1147                                             WM8903_VMID_IO_ENA |
1148                                             (2 << WM8903_VMID_SOFT_SHIFT) |
1149                                             WM8903_VMID_RES_250K |
1150                                             WM8903_VMID_BUF_ENA);
1151 
1152                         msleep(129);
1153 
1154                         snd_soc_component_update_bits(component, WM8903_POWER_MANAGEMENT_5,
1155                                             WM8903_SPKL_ENA | WM8903_SPKR_ENA,
1156                                             0);
1157 
1158                         snd_soc_component_update_bits(component, WM8903_VMID_CONTROL_0,
1159                                             WM8903_VMID_SOFT_MASK, 0);
1160 
1161                         snd_soc_component_update_bits(component, WM8903_VMID_CONTROL_0,
1162                                             WM8903_VMID_RES_MASK,
1163                                             WM8903_VMID_RES_50K);
1164 
1165                         snd_soc_component_update_bits(component, WM8903_BIAS_CONTROL_0,
1166                                             WM8903_BIAS_ENA | WM8903_POBCTRL,
1167                                             WM8903_BIAS_ENA);
1168 
1169                         /* By default no bypass paths are enabled so
1170                          * enable Class W support.
1171                          */
1172                         dev_dbg(component->dev, "Enabling Class W\n");
1173                         snd_soc_component_update_bits(component, WM8903_CLASS_W_0,
1174                                             WM8903_CP_DYN_FREQ |
1175                                             WM8903_CP_DYN_V,
1176                                             WM8903_CP_DYN_FREQ |
1177                                             WM8903_CP_DYN_V);
1178                 }
1179 
1180                 snd_soc_component_update_bits(component, WM8903_VMID_CONTROL_0,
1181                                     WM8903_VMID_RES_MASK,
1182                                     WM8903_VMID_RES_250K);
1183                 break;
1184 
1185         case SND_SOC_BIAS_OFF:
1186                 snd_soc_component_update_bits(component, WM8903_BIAS_CONTROL_0,
1187                                     WM8903_BIAS_ENA, 0);
1188 
1189                 snd_soc_component_update_bits(component, WM8903_VMID_CONTROL_0,
1190                                     WM8903_VMID_SOFT_MASK,
1191                                     2 << WM8903_VMID_SOFT_SHIFT);
1192 
1193                 snd_soc_component_update_bits(component, WM8903_VMID_CONTROL_0,
1194                                     WM8903_VMID_BUF_ENA, 0);
1195 
1196                 msleep(290);
1197 
1198                 snd_soc_component_update_bits(component, WM8903_VMID_CONTROL_0,
1199                                     WM8903_VMID_TIE_ENA | WM8903_BUFIO_ENA |
1200                                     WM8903_VMID_IO_ENA | WM8903_VMID_RES_MASK |
1201                                     WM8903_VMID_SOFT_MASK |
1202                                     WM8903_VMID_BUF_ENA, 0);
1203 
1204                 snd_soc_component_update_bits(component, WM8903_BIAS_CONTROL_0,
1205                                     WM8903_STARTUP_BIAS_ENA, 0);
1206                 break;
1207         }
1208 
1209         return 0;
1210 }
1211 
1212 static int wm8903_set_dai_sysclk(struct snd_soc_dai *codec_dai,
1213                                  int clk_id, unsigned int freq, int dir)
1214 {
1215         struct snd_soc_component *component = codec_dai->component;
1216         struct wm8903_priv *wm8903 = snd_soc_component_get_drvdata(component);
1217 
1218         wm8903->sysclk = freq;
1219 
1220         return 0;
1221 }
1222 
1223 static int wm8903_set_dai_fmt(struct snd_soc_dai *codec_dai,
1224                               unsigned int fmt)
1225 {
1226         struct snd_soc_component *component = codec_dai->component;
1227         u16 aif1 = snd_soc_component_read32(component, WM8903_AUDIO_INTERFACE_1);
1228 
1229         aif1 &= ~(WM8903_LRCLK_DIR | WM8903_BCLK_DIR | WM8903_AIF_FMT_MASK |
1230                   WM8903_AIF_LRCLK_INV | WM8903_AIF_BCLK_INV);
1231 
1232         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1233         case SND_SOC_DAIFMT_CBS_CFS:
1234                 break;
1235         case SND_SOC_DAIFMT_CBS_CFM:
1236                 aif1 |= WM8903_LRCLK_DIR;
1237                 break;
1238         case SND_SOC_DAIFMT_CBM_CFM:
1239                 aif1 |= WM8903_LRCLK_DIR | WM8903_BCLK_DIR;
1240                 break;
1241         case SND_SOC_DAIFMT_CBM_CFS:
1242                 aif1 |= WM8903_BCLK_DIR;
1243                 break;
1244         default:
1245                 return -EINVAL;
1246         }
1247 
1248         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1249         case SND_SOC_DAIFMT_DSP_A:
1250                 aif1 |= 0x3;
1251                 break;
1252         case SND_SOC_DAIFMT_DSP_B:
1253                 aif1 |= 0x3 | WM8903_AIF_LRCLK_INV;
1254                 break;
1255         case SND_SOC_DAIFMT_I2S:
1256                 aif1 |= 0x2;
1257                 break;
1258         case SND_SOC_DAIFMT_RIGHT_J:
1259                 aif1 |= 0x1;
1260                 break;
1261         case SND_SOC_DAIFMT_LEFT_J:
1262                 break;
1263         default:
1264                 return -EINVAL;
1265         }
1266 
1267         /* Clock inversion */
1268         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1269         case SND_SOC_DAIFMT_DSP_A:
1270         case SND_SOC_DAIFMT_DSP_B:
1271                 /* frame inversion not valid for DSP modes */
1272                 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1273                 case SND_SOC_DAIFMT_NB_NF:
1274                         break;
1275                 case SND_SOC_DAIFMT_IB_NF:
1276                         aif1 |= WM8903_AIF_BCLK_INV;
1277                         break;
1278                 default:
1279                         return -EINVAL;
1280                 }
1281                 break;
1282         case SND_SOC_DAIFMT_I2S:
1283         case SND_SOC_DAIFMT_RIGHT_J:
1284         case SND_SOC_DAIFMT_LEFT_J:
1285                 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1286                 case SND_SOC_DAIFMT_NB_NF:
1287                         break;
1288                 case SND_SOC_DAIFMT_IB_IF:
1289                         aif1 |= WM8903_AIF_BCLK_INV | WM8903_AIF_LRCLK_INV;
1290                         break;
1291                 case SND_SOC_DAIFMT_IB_NF:
1292                         aif1 |= WM8903_AIF_BCLK_INV;
1293                         break;
1294                 case SND_SOC_DAIFMT_NB_IF:
1295                         aif1 |= WM8903_AIF_LRCLK_INV;
1296                         break;
1297                 default:
1298                         return -EINVAL;
1299                 }
1300                 break;
1301         default:
1302                 return -EINVAL;
1303         }
1304 
1305         snd_soc_component_write(component, WM8903_AUDIO_INTERFACE_1, aif1);
1306 
1307         return 0;
1308 }
1309 
1310 static int wm8903_digital_mute(struct snd_soc_dai *codec_dai, int mute)
1311 {
1312         struct snd_soc_component *component = codec_dai->component;
1313         u16 reg;
1314 
1315         reg = snd_soc_component_read32(component, WM8903_DAC_DIGITAL_1);
1316 
1317         if (mute)
1318                 reg |= WM8903_DAC_MUTE;
1319         else
1320                 reg &= ~WM8903_DAC_MUTE;
1321 
1322         snd_soc_component_write(component, WM8903_DAC_DIGITAL_1, reg);
1323 
1324         return 0;
1325 }
1326 
1327 /* Lookup table for CLK_SYS/fs ratio.  256fs or more is recommended
1328  * for optimal performance so we list the lower rates first and match
1329  * on the last match we find. */
1330 static struct {
1331         int div;
1332         int rate;
1333         int mode;
1334         int mclk_div;
1335 } clk_sys_ratios[] = {
1336         {   64, 0x0, 0x0, 1 },
1337         {   68, 0x0, 0x1, 1 },
1338         {  125, 0x0, 0x2, 1 },
1339         {  128, 0x1, 0x0, 1 },
1340         {  136, 0x1, 0x1, 1 },
1341         {  192, 0x2, 0x0, 1 },
1342         {  204, 0x2, 0x1, 1 },
1343 
1344         {   64, 0x0, 0x0, 2 },
1345         {   68, 0x0, 0x1, 2 },
1346         {  125, 0x0, 0x2, 2 },
1347         {  128, 0x1, 0x0, 2 },
1348         {  136, 0x1, 0x1, 2 },
1349         {  192, 0x2, 0x0, 2 },
1350         {  204, 0x2, 0x1, 2 },
1351 
1352         {  250, 0x2, 0x2, 1 },
1353         {  256, 0x3, 0x0, 1 },
1354         {  272, 0x3, 0x1, 1 },
1355         {  384, 0x4, 0x0, 1 },
1356         {  408, 0x4, 0x1, 1 },
1357         {  375, 0x4, 0x2, 1 },
1358         {  512, 0x5, 0x0, 1 },
1359         {  544, 0x5, 0x1, 1 },
1360         {  500, 0x5, 0x2, 1 },
1361         {  768, 0x6, 0x0, 1 },
1362         {  816, 0x6, 0x1, 1 },
1363         {  750, 0x6, 0x2, 1 },
1364         { 1024, 0x7, 0x0, 1 },
1365         { 1088, 0x7, 0x1, 1 },
1366         { 1000, 0x7, 0x2, 1 },
1367         { 1408, 0x8, 0x0, 1 },
1368         { 1496, 0x8, 0x1, 1 },
1369         { 1536, 0x9, 0x0, 1 },
1370         { 1632, 0x9, 0x1, 1 },
1371         { 1500, 0x9, 0x2, 1 },
1372 
1373         {  250, 0x2, 0x2, 2 },
1374         {  256, 0x3, 0x0, 2 },
1375         {  272, 0x3, 0x1, 2 },
1376         {  384, 0x4, 0x0, 2 },
1377         {  408, 0x4, 0x1, 2 },
1378         {  375, 0x4, 0x2, 2 },
1379         {  512, 0x5, 0x0, 2 },
1380         {  544, 0x5, 0x1, 2 },
1381         {  500, 0x5, 0x2, 2 },
1382         {  768, 0x6, 0x0, 2 },
1383         {  816, 0x6, 0x1, 2 },
1384         {  750, 0x6, 0x2, 2 },
1385         { 1024, 0x7, 0x0, 2 },
1386         { 1088, 0x7, 0x1, 2 },
1387         { 1000, 0x7, 0x2, 2 },
1388         { 1408, 0x8, 0x0, 2 },
1389         { 1496, 0x8, 0x1, 2 },
1390         { 1536, 0x9, 0x0, 2 },
1391         { 1632, 0x9, 0x1, 2 },
1392         { 1500, 0x9, 0x2, 2 },
1393 };
1394 
1395 /* CLK_SYS/BCLK ratios - multiplied by 10 due to .5s */
1396 static struct {
1397         int ratio;
1398         int div;
1399 } bclk_divs[] = {
1400         {  10,  0 },
1401         {  20,  2 },
1402         {  30,  3 },
1403         {  40,  4 },
1404         {  50,  5 },
1405         {  60,  7 },
1406         {  80,  8 },
1407         { 100,  9 },
1408         { 120, 11 },
1409         { 160, 12 },
1410         { 200, 13 },
1411         { 220, 14 },
1412         { 240, 15 },
1413         { 300, 17 },
1414         { 320, 18 },
1415         { 440, 19 },
1416         { 480, 20 },
1417 };
1418 
1419 /* Sample rates for DSP */
1420 static struct {
1421         int rate;
1422         int value;
1423 } sample_rates[] = {
1424         {  8000,  0 },
1425         { 11025,  1 },
1426         { 12000,  2 },
1427         { 16000,  3 },
1428         { 22050,  4 },
1429         { 24000,  5 },
1430         { 32000,  6 },
1431         { 44100,  7 },
1432         { 48000,  8 },
1433         { 88200,  9 },
1434         { 96000, 10 },
1435         { 0,      0 },
1436 };
1437 
1438 static int wm8903_hw_params(struct snd_pcm_substream *substream,
1439                             struct snd_pcm_hw_params *params,
1440                             struct snd_soc_dai *dai)
1441 {
1442         struct snd_soc_component *component = dai->component;
1443         struct wm8903_priv *wm8903 = snd_soc_component_get_drvdata(component);
1444         int fs = params_rate(params);
1445         int bclk;
1446         int bclk_div;
1447         int i;
1448         int dsp_config;
1449         int clk_config;
1450         int best_val;
1451         int cur_val;
1452         int clk_sys;
1453 
1454         u16 aif1 = snd_soc_component_read32(component, WM8903_AUDIO_INTERFACE_1);
1455         u16 aif2 = snd_soc_component_read32(component, WM8903_AUDIO_INTERFACE_2);
1456         u16 aif3 = snd_soc_component_read32(component, WM8903_AUDIO_INTERFACE_3);
1457         u16 clock0 = snd_soc_component_read32(component, WM8903_CLOCK_RATES_0);
1458         u16 clock1 = snd_soc_component_read32(component, WM8903_CLOCK_RATES_1);
1459         u16 dac_digital1 = snd_soc_component_read32(component, WM8903_DAC_DIGITAL_1);
1460 
1461         /* Enable sloping stopband filter for low sample rates */
1462         if (fs <= 24000)
1463                 dac_digital1 |= WM8903_DAC_SB_FILT;
1464         else
1465                 dac_digital1 &= ~WM8903_DAC_SB_FILT;
1466 
1467         /* Configure sample rate logic for DSP - choose nearest rate */
1468         dsp_config = 0;
1469         best_val = abs(sample_rates[dsp_config].rate - fs);
1470         for (i = 1; i < ARRAY_SIZE(sample_rates); i++) {
1471                 cur_val = abs(sample_rates[i].rate - fs);
1472                 if (cur_val <= best_val) {
1473                         dsp_config = i;
1474                         best_val = cur_val;
1475                 }
1476         }
1477 
1478         dev_dbg(component->dev, "DSP fs = %dHz\n", sample_rates[dsp_config].rate);
1479         clock1 &= ~WM8903_SAMPLE_RATE_MASK;
1480         clock1 |= sample_rates[dsp_config].value;
1481 
1482         aif1 &= ~WM8903_AIF_WL_MASK;
1483         bclk = 2 * fs;
1484         switch (params_width(params)) {
1485         case 16:
1486                 bclk *= 16;
1487                 break;
1488         case 20:
1489                 bclk *= 20;
1490                 aif1 |= 0x4;
1491                 break;
1492         case 24:
1493                 bclk *= 24;
1494                 aif1 |= 0x8;
1495                 break;
1496         case 32:
1497                 bclk *= 32;
1498                 aif1 |= 0xc;
1499                 break;
1500         default:
1501                 return -EINVAL;
1502         }
1503 
1504         dev_dbg(component->dev, "MCLK = %dHz, target sample rate = %dHz\n",
1505                 wm8903->sysclk, fs);
1506 
1507         /* We may not have an MCLK which allows us to generate exactly
1508          * the clock we want, particularly with USB derived inputs, so
1509          * approximate.
1510          */
1511         clk_config = 0;
1512         best_val = abs((wm8903->sysclk /
1513                         (clk_sys_ratios[0].mclk_div *
1514                          clk_sys_ratios[0].div)) - fs);
1515         for (i = 1; i < ARRAY_SIZE(clk_sys_ratios); i++) {
1516                 cur_val = abs((wm8903->sysclk /
1517                                (clk_sys_ratios[i].mclk_div *
1518                                 clk_sys_ratios[i].div)) - fs);
1519 
1520                 if (cur_val <= best_val) {
1521                         clk_config = i;
1522                         best_val = cur_val;
1523                 }
1524         }
1525 
1526         if (clk_sys_ratios[clk_config].mclk_div == 2) {
1527                 clock0 |= WM8903_MCLKDIV2;
1528                 clk_sys = wm8903->sysclk / 2;
1529         } else {
1530                 clock0 &= ~WM8903_MCLKDIV2;
1531                 clk_sys = wm8903->sysclk;
1532         }
1533 
1534         clock1 &= ~(WM8903_CLK_SYS_RATE_MASK |
1535                     WM8903_CLK_SYS_MODE_MASK);
1536         clock1 |= clk_sys_ratios[clk_config].rate << WM8903_CLK_SYS_RATE_SHIFT;
1537         clock1 |= clk_sys_ratios[clk_config].mode << WM8903_CLK_SYS_MODE_SHIFT;
1538 
1539         dev_dbg(component->dev, "CLK_SYS_RATE=%x, CLK_SYS_MODE=%x div=%d\n",
1540                 clk_sys_ratios[clk_config].rate,
1541                 clk_sys_ratios[clk_config].mode,
1542                 clk_sys_ratios[clk_config].div);
1543 
1544         dev_dbg(component->dev, "Actual CLK_SYS = %dHz\n", clk_sys);
1545 
1546         /* We may not get quite the right frequency if using
1547          * approximate clocks so look for the closest match that is
1548          * higher than the target (we need to ensure that there enough
1549          * BCLKs to clock out the samples).
1550          */
1551         bclk_div = 0;
1552         best_val = ((clk_sys * 10) / bclk_divs[0].ratio) - bclk;
1553         i = 1;
1554         while (i < ARRAY_SIZE(bclk_divs)) {
1555                 cur_val = ((clk_sys * 10) / bclk_divs[i].ratio) - bclk;
1556                 if (cur_val < 0) /* BCLK table is sorted */
1557                         break;
1558                 bclk_div = i;
1559                 best_val = cur_val;
1560                 i++;
1561         }
1562 
1563         aif2 &= ~WM8903_BCLK_DIV_MASK;
1564         aif3 &= ~WM8903_LRCLK_RATE_MASK;
1565 
1566         dev_dbg(component->dev, "BCLK ratio %d for %dHz - actual BCLK = %dHz\n",
1567                 bclk_divs[bclk_div].ratio / 10, bclk,
1568                 (clk_sys * 10) / bclk_divs[bclk_div].ratio);
1569 
1570         aif2 |= bclk_divs[bclk_div].div;
1571         aif3 |= bclk / fs;
1572 
1573         wm8903->fs = params_rate(params);
1574         wm8903_set_deemph(component);
1575 
1576         snd_soc_component_write(component, WM8903_CLOCK_RATES_0, clock0);
1577         snd_soc_component_write(component, WM8903_CLOCK_RATES_1, clock1);
1578         snd_soc_component_write(component, WM8903_AUDIO_INTERFACE_1, aif1);
1579         snd_soc_component_write(component, WM8903_AUDIO_INTERFACE_2, aif2);
1580         snd_soc_component_write(component, WM8903_AUDIO_INTERFACE_3, aif3);
1581         snd_soc_component_write(component, WM8903_DAC_DIGITAL_1, dac_digital1);
1582 
1583         return 0;
1584 }
1585 
1586 /**
1587  * wm8903_mic_detect - Enable microphone detection via the WM8903 IRQ
1588  *
1589  * @component:  WM8903 component
1590  * @jack:   jack to report detection events on
1591  * @det:    value to report for presence detection
1592  * @shrt:   value to report for short detection
1593  *
1594  * Enable microphone detection via IRQ on the WM8903.  If GPIOs are
1595  * being used to bring out signals to the processor then only platform
1596  * data configuration is needed for WM8903 and processor GPIOs should
1597  * be configured using snd_soc_jack_add_gpios() instead.
1598  *
1599  * The current threasholds for detection should be configured using
1600  * micdet_cfg in the platform data.  Using this function will force on
1601  * the microphone bias for the device.
1602  */
1603 int wm8903_mic_detect(struct snd_soc_component *component, struct snd_soc_jack *jack,
1604                       int det, int shrt)
1605 {
1606         struct wm8903_priv *wm8903 = snd_soc_component_get_drvdata(component);
1607         int irq_mask = WM8903_MICDET_EINT | WM8903_MICSHRT_EINT;
1608 
1609         dev_dbg(component->dev, "Enabling microphone detection: %x %x\n",
1610                 det, shrt);
1611 
1612         /* Store the configuration */
1613         wm8903->mic_jack = jack;
1614         wm8903->mic_det = det;
1615         wm8903->mic_short = shrt;
1616 
1617         /* Enable interrupts we've got a report configured for */
1618         if (det)
1619                 irq_mask &= ~WM8903_MICDET_EINT;
1620         if (shrt)
1621                 irq_mask &= ~WM8903_MICSHRT_EINT;
1622 
1623         snd_soc_component_update_bits(component, WM8903_INTERRUPT_STATUS_1_MASK,
1624                             WM8903_MICDET_EINT | WM8903_MICSHRT_EINT,
1625                             irq_mask);
1626 
1627         if (det || shrt) {
1628                 /* Enable mic detection, this may not have been set through
1629                  * platform data (eg, if the defaults are OK). */
1630                 snd_soc_component_update_bits(component, WM8903_WRITE_SEQUENCER_0,
1631                                     WM8903_WSEQ_ENA, WM8903_WSEQ_ENA);
1632                 snd_soc_component_update_bits(component, WM8903_MIC_BIAS_CONTROL_0,
1633                                     WM8903_MICDET_ENA, WM8903_MICDET_ENA);
1634         } else {
1635                 snd_soc_component_update_bits(component, WM8903_MIC_BIAS_CONTROL_0,
1636                                     WM8903_MICDET_ENA, 0);
1637         }
1638 
1639         return 0;
1640 }
1641 EXPORT_SYMBOL_GPL(wm8903_mic_detect);
1642 
1643 static irqreturn_t wm8903_irq(int irq, void *data)
1644 {
1645         struct wm8903_priv *wm8903 = data;
1646         int mic_report, ret;
1647         unsigned int int_val, mask, int_pol;
1648 
1649         ret = regmap_read(wm8903->regmap, WM8903_INTERRUPT_STATUS_1_MASK,
1650                           &mask);
1651         if (ret != 0) {
1652                 dev_err(wm8903->dev, "Failed to read IRQ mask: %d\n", ret);
1653                 return IRQ_NONE;
1654         }
1655 
1656         ret = regmap_read(wm8903->regmap, WM8903_INTERRUPT_STATUS_1, &int_val);
1657         if (ret != 0) {
1658                 dev_err(wm8903->dev, "Failed to read IRQ status: %d\n", ret);
1659                 return IRQ_NONE;
1660         }
1661 
1662         int_val &= ~mask;
1663 
1664         if (int_val & WM8903_WSEQ_BUSY_EINT) {
1665                 dev_warn(wm8903->dev, "Write sequencer done\n");
1666         }
1667 
1668         /*
1669          * The rest is microphone jack detection.  We need to manually
1670          * invert the polarity of the interrupt after each event - to
1671          * simplify the code keep track of the last state we reported
1672          * and just invert the relevant bits in both the report and
1673          * the polarity register.
1674          */
1675         mic_report = wm8903->mic_last_report;
1676         ret = regmap_read(wm8903->regmap, WM8903_INTERRUPT_POLARITY_1,
1677                           &int_pol);
1678         if (ret != 0) {
1679                 dev_err(wm8903->dev, "Failed to read interrupt polarity: %d\n",
1680                         ret);
1681                 return IRQ_HANDLED;
1682         }
1683 
1684 #ifndef CONFIG_SND_SOC_WM8903_MODULE
1685         if (int_val & (WM8903_MICSHRT_EINT | WM8903_MICDET_EINT))
1686                 trace_snd_soc_jack_irq(dev_name(wm8903->dev));
1687 #endif
1688 
1689         if (int_val & WM8903_MICSHRT_EINT) {
1690                 dev_dbg(wm8903->dev, "Microphone short (pol=%x)\n", int_pol);
1691 
1692                 mic_report ^= wm8903->mic_short;
1693                 int_pol ^= WM8903_MICSHRT_INV;
1694         }
1695 
1696         if (int_val & WM8903_MICDET_EINT) {
1697                 dev_dbg(wm8903->dev, "Microphone detect (pol=%x)\n", int_pol);
1698 
1699                 mic_report ^= wm8903->mic_det;
1700                 int_pol ^= WM8903_MICDET_INV;
1701 
1702                 msleep(wm8903->mic_delay);
1703         }
1704 
1705         regmap_update_bits(wm8903->regmap, WM8903_INTERRUPT_POLARITY_1,
1706                            WM8903_MICSHRT_INV | WM8903_MICDET_INV, int_pol);
1707 
1708         snd_soc_jack_report(wm8903->mic_jack, mic_report,
1709                             wm8903->mic_short | wm8903->mic_det);
1710 
1711         wm8903->mic_last_report = mic_report;
1712 
1713         return IRQ_HANDLED;
1714 }
1715 
1716 #define WM8903_PLAYBACK_RATES (SNDRV_PCM_RATE_8000 |\
1717                                SNDRV_PCM_RATE_11025 |   \
1718                                SNDRV_PCM_RATE_16000 |   \
1719                                SNDRV_PCM_RATE_22050 |   \
1720                                SNDRV_PCM_RATE_32000 |   \
1721                                SNDRV_PCM_RATE_44100 |   \
1722                                SNDRV_PCM_RATE_48000 |   \
1723                                SNDRV_PCM_RATE_88200 |   \
1724                                SNDRV_PCM_RATE_96000)
1725 
1726 #define WM8903_CAPTURE_RATES (SNDRV_PCM_RATE_8000 |\
1727                               SNDRV_PCM_RATE_11025 |    \
1728                               SNDRV_PCM_RATE_16000 |    \
1729                               SNDRV_PCM_RATE_22050 |    \
1730                               SNDRV_PCM_RATE_32000 |    \
1731                               SNDRV_PCM_RATE_44100 |    \
1732                               SNDRV_PCM_RATE_48000)
1733 
1734 #define WM8903_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
1735                         SNDRV_PCM_FMTBIT_S20_3LE |\
1736                         SNDRV_PCM_FMTBIT_S24_LE)
1737 
1738 static const struct snd_soc_dai_ops wm8903_dai_ops = {
1739         .hw_params      = wm8903_hw_params,
1740         .digital_mute   = wm8903_digital_mute,
1741         .set_fmt        = wm8903_set_dai_fmt,
1742         .set_sysclk     = wm8903_set_dai_sysclk,
1743 };
1744 
1745 static struct snd_soc_dai_driver wm8903_dai = {
1746         .name = "wm8903-hifi",
1747         .playback = {
1748                 .stream_name = "Playback",
1749                 .channels_min = 2,
1750                 .channels_max = 2,
1751                 .rates = WM8903_PLAYBACK_RATES,
1752                 .formats = WM8903_FORMATS,
1753         },
1754         .capture = {
1755                  .stream_name = "Capture",
1756                  .channels_min = 2,
1757                  .channels_max = 2,
1758                  .rates = WM8903_CAPTURE_RATES,
1759                  .formats = WM8903_FORMATS,
1760          },
1761         .ops = &wm8903_dai_ops,
1762         .symmetric_rates = 1,
1763 };
1764 
1765 static int wm8903_resume(struct snd_soc_component *component)
1766 {
1767         struct wm8903_priv *wm8903 = snd_soc_component_get_drvdata(component);
1768 
1769         regcache_sync(wm8903->regmap);
1770 
1771         return 0;
1772 }
1773 
1774 #ifdef CONFIG_GPIOLIB
1775 static int wm8903_gpio_request(struct gpio_chip *chip, unsigned offset)
1776 {
1777         if (offset >= WM8903_NUM_GPIO)
1778                 return -EINVAL;
1779 
1780         return 0;
1781 }
1782 
1783 static int wm8903_gpio_direction_in(struct gpio_chip *chip, unsigned offset)
1784 {
1785         struct wm8903_priv *wm8903 = gpiochip_get_data(chip);
1786         unsigned int mask, val;
1787         int ret;
1788 
1789         mask = WM8903_GP1_FN_MASK | WM8903_GP1_DIR_MASK;
1790         val = (WM8903_GPn_FN_GPIO_INPUT << WM8903_GP1_FN_SHIFT) |
1791                 WM8903_GP1_DIR;
1792 
1793         ret = regmap_update_bits(wm8903->regmap,
1794                                  WM8903_GPIO_CONTROL_1 + offset, mask, val);
1795         if (ret < 0)
1796                 return ret;
1797 
1798         return 0;
1799 }
1800 
1801 static int wm8903_gpio_get(struct gpio_chip *chip, unsigned offset)
1802 {
1803         struct wm8903_priv *wm8903 = gpiochip_get_data(chip);
1804         unsigned int reg;
1805 
1806         regmap_read(wm8903->regmap, WM8903_GPIO_CONTROL_1 + offset, &reg);
1807 
1808         return !!((reg & WM8903_GP1_LVL_MASK) >> WM8903_GP1_LVL_SHIFT);
1809 }
1810 
1811 static int wm8903_gpio_direction_out(struct gpio_chip *chip,
1812                                      unsigned offset, int value)
1813 {
1814         struct wm8903_priv *wm8903 = gpiochip_get_data(chip);
1815         unsigned int mask, val;
1816         int ret;
1817 
1818         mask = WM8903_GP1_FN_MASK | WM8903_GP1_DIR_MASK | WM8903_GP1_LVL_MASK;
1819         val = (WM8903_GPn_FN_GPIO_OUTPUT << WM8903_GP1_FN_SHIFT) |
1820                 (value << WM8903_GP2_LVL_SHIFT);
1821 
1822         ret = regmap_update_bits(wm8903->regmap,
1823                                  WM8903_GPIO_CONTROL_1 + offset, mask, val);
1824         if (ret < 0)
1825                 return ret;
1826 
1827         return 0;
1828 }
1829 
1830 static void wm8903_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
1831 {
1832         struct wm8903_priv *wm8903 = gpiochip_get_data(chip);
1833 
1834         regmap_update_bits(wm8903->regmap, WM8903_GPIO_CONTROL_1 + offset,
1835                            WM8903_GP1_LVL_MASK,
1836                            !!value << WM8903_GP1_LVL_SHIFT);
1837 }
1838 
1839 static const struct gpio_chip wm8903_template_chip = {
1840         .label                  = "wm8903",
1841         .owner                  = THIS_MODULE,
1842         .request                = wm8903_gpio_request,
1843         .direction_input        = wm8903_gpio_direction_in,
1844         .get                    = wm8903_gpio_get,
1845         .direction_output       = wm8903_gpio_direction_out,
1846         .set                    = wm8903_gpio_set,
1847         .can_sleep              = 1,
1848 };
1849 
1850 static void wm8903_init_gpio(struct wm8903_priv *wm8903)
1851 {
1852         struct wm8903_platform_data *pdata = wm8903->pdata;
1853         int ret;
1854 
1855         wm8903->gpio_chip = wm8903_template_chip;
1856         wm8903->gpio_chip.ngpio = WM8903_NUM_GPIO;
1857         wm8903->gpio_chip.parent = wm8903->dev;
1858 
1859         if (pdata->gpio_base)
1860                 wm8903->gpio_chip.base = pdata->gpio_base;
1861         else
1862                 wm8903->gpio_chip.base = -1;
1863 
1864         ret = gpiochip_add_data(&wm8903->gpio_chip, wm8903);
1865         if (ret != 0)
1866                 dev_err(wm8903->dev, "Failed to add GPIOs: %d\n", ret);
1867 }
1868 
1869 static void wm8903_free_gpio(struct wm8903_priv *wm8903)
1870 {
1871         gpiochip_remove(&wm8903->gpio_chip);
1872 }
1873 #else
1874 static void wm8903_init_gpio(struct wm8903_priv *wm8903)
1875 {
1876 }
1877 
1878 static void wm8903_free_gpio(struct wm8903_priv *wm8903)
1879 {
1880 }
1881 #endif
1882 
1883 static const struct snd_soc_component_driver soc_component_dev_wm8903 = {
1884         .resume                 = wm8903_resume,
1885         .set_bias_level         = wm8903_set_bias_level,
1886         .seq_notifier           = wm8903_seq_notifier,
1887         .controls               = wm8903_snd_controls,
1888         .num_controls           = ARRAY_SIZE(wm8903_snd_controls),
1889         .dapm_widgets           = wm8903_dapm_widgets,
1890         .num_dapm_widgets       = ARRAY_SIZE(wm8903_dapm_widgets),
1891         .dapm_routes            = wm8903_intercon,
1892         .num_dapm_routes        = ARRAY_SIZE(wm8903_intercon),
1893         .suspend_bias_off       = 1,
1894         .idle_bias_on           = 1,
1895         .use_pmdown_time        = 1,
1896         .endianness             = 1,
1897         .non_legacy_dai_naming  = 1,
1898 };
1899 
1900 static const struct regmap_config wm8903_regmap = {
1901         .reg_bits = 8,
1902         .val_bits = 16,
1903 
1904         .max_register = WM8903_MAX_REGISTER,
1905         .volatile_reg = wm8903_volatile_register,
1906         .readable_reg = wm8903_readable_register,
1907 
1908         .cache_type = REGCACHE_RBTREE,
1909         .reg_defaults = wm8903_reg_defaults,
1910         .num_reg_defaults = ARRAY_SIZE(wm8903_reg_defaults),
1911 };
1912 
1913 static int wm8903_set_pdata_irq_trigger(struct i2c_client *i2c,
1914                                         struct wm8903_platform_data *pdata)
1915 {
1916         struct irq_data *irq_data = irq_get_irq_data(i2c->irq);
1917         if (!irq_data) {
1918                 dev_err(&i2c->dev, "Invalid IRQ: %d\n",
1919                         i2c->irq);
1920                 return -EINVAL;
1921         }
1922 
1923         switch (irqd_get_trigger_type(irq_data)) {
1924         case IRQ_TYPE_NONE:
1925         default:
1926                 /*
1927                 * We assume the controller imposes no restrictions,
1928                 * so we are able to select active-high
1929                 */
1930                 /* Fall-through */
1931         case IRQ_TYPE_LEVEL_HIGH:
1932                 pdata->irq_active_low = false;
1933                 break;
1934         case IRQ_TYPE_LEVEL_LOW:
1935                 pdata->irq_active_low = true;
1936                 break;
1937         }
1938 
1939         return 0;
1940 }
1941 
1942 static int wm8903_set_pdata_from_of(struct i2c_client *i2c,
1943                                     struct wm8903_platform_data *pdata)
1944 {
1945         const struct device_node *np = i2c->dev.of_node;
1946         u32 val32;
1947         int i;
1948 
1949         if (of_property_read_u32(np, "micdet-cfg", &val32) >= 0)
1950                 pdata->micdet_cfg = val32;
1951 
1952         if (of_property_read_u32(np, "micdet-delay", &val32) >= 0)
1953                 pdata->micdet_delay = val32;
1954 
1955         if (of_property_read_u32_array(np, "gpio-cfg", pdata->gpio_cfg,
1956                                        ARRAY_SIZE(pdata->gpio_cfg)) >= 0) {
1957                 /*
1958                  * In device tree: 0 means "write 0",
1959                  * 0xffffffff means "don't touch".
1960                  *
1961                  * In platform data: 0 means "don't touch",
1962                  * 0x8000 means "write 0".
1963                  *
1964                  * Note: WM8903_GPIO_CONFIG_ZERO == 0x8000.
1965                  *
1966                  *  Convert from DT to pdata representation here,
1967                  * so no other code needs to change.
1968                  */
1969                 for (i = 0; i < ARRAY_SIZE(pdata->gpio_cfg); i++) {
1970                         if (pdata->gpio_cfg[i] == 0) {
1971                                 pdata->gpio_cfg[i] = WM8903_GPIO_CONFIG_ZERO;
1972                         } else if (pdata->gpio_cfg[i] == 0xffffffff) {
1973                                 pdata->gpio_cfg[i] = 0;
1974                         } else if (pdata->gpio_cfg[i] > 0x7fff) {
1975                                 dev_err(&i2c->dev, "Invalid gpio-cfg[%d] %x\n",
1976                                         i, pdata->gpio_cfg[i]);
1977                                 return -EINVAL;
1978                         }
1979                 }
1980         }
1981 
1982         return 0;
1983 }
1984 
1985 static int wm8903_i2c_probe(struct i2c_client *i2c,
1986                             const struct i2c_device_id *id)
1987 {
1988         struct wm8903_platform_data *pdata = dev_get_platdata(&i2c->dev);
1989         struct wm8903_priv *wm8903;
1990         int trigger;
1991         bool mic_gpio = false;
1992         unsigned int val, irq_pol;
1993         int ret, i;
1994 
1995         wm8903 = devm_kzalloc(&i2c->dev, sizeof(*wm8903), GFP_KERNEL);
1996         if (wm8903 == NULL)
1997                 return -ENOMEM;
1998 
1999         mutex_init(&wm8903->lock);
2000         wm8903->dev = &i2c->dev;
2001 
2002         wm8903->regmap = devm_regmap_init_i2c(i2c, &wm8903_regmap);
2003         if (IS_ERR(wm8903->regmap)) {
2004                 ret = PTR_ERR(wm8903->regmap);
2005                 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
2006                         ret);
2007                 return ret;
2008         }
2009 
2010         i2c_set_clientdata(i2c, wm8903);
2011 
2012         /* If no platform data was supplied, create storage for defaults */
2013         if (pdata) {
2014                 wm8903->pdata = pdata;
2015         } else {
2016                 wm8903->pdata = devm_kzalloc(&i2c->dev, sizeof(*wm8903->pdata),
2017                                              GFP_KERNEL);
2018                 if (!wm8903->pdata)
2019                         return -ENOMEM;
2020 
2021                 if (i2c->irq) {
2022                         ret = wm8903_set_pdata_irq_trigger(i2c, wm8903->pdata);
2023                         if (ret != 0)
2024                                 return ret;
2025                 }
2026 
2027                 if (i2c->dev.of_node) {
2028                         ret = wm8903_set_pdata_from_of(i2c, wm8903->pdata);
2029                         if (ret != 0)
2030                                 return ret;
2031                 }
2032         }
2033 
2034         pdata = wm8903->pdata;
2035 
2036         for (i = 0; i < ARRAY_SIZE(wm8903->supplies); i++)
2037                 wm8903->supplies[i].supply = wm8903_supply_names[i];
2038 
2039         ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8903->supplies),
2040                                       wm8903->supplies);
2041         if (ret != 0) {
2042                 dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
2043                 return ret;
2044         }
2045 
2046         ret = regulator_bulk_enable(ARRAY_SIZE(wm8903->supplies),
2047                                     wm8903->supplies);
2048         if (ret != 0) {
2049                 dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
2050                 return ret;
2051         }
2052 
2053         ret = regmap_read(wm8903->regmap, WM8903_SW_RESET_AND_ID, &val);
2054         if (ret != 0) {
2055                 dev_err(&i2c->dev, "Failed to read chip ID: %d\n", ret);
2056                 goto err;
2057         }
2058         if (val != 0x8903) {
2059                 dev_err(&i2c->dev, "Device with ID %x is not a WM8903\n", val);
2060                 ret = -ENODEV;
2061                 goto err;
2062         }
2063 
2064         ret = regmap_read(wm8903->regmap, WM8903_REVISION_NUMBER, &val);
2065         if (ret != 0) {
2066                 dev_err(&i2c->dev, "Failed to read chip revision: %d\n", ret);
2067                 goto err;
2068         }
2069         dev_info(&i2c->dev, "WM8903 revision %c\n",
2070                  (val & WM8903_CHIP_REV_MASK) + 'A');
2071 
2072         /* Reset the device */
2073         regmap_write(wm8903->regmap, WM8903_SW_RESET_AND_ID, 0x8903);
2074 
2075         wm8903_init_gpio(wm8903);
2076 
2077         /* Set up GPIO pin state, detect if any are MIC detect outputs */
2078         for (i = 0; i < ARRAY_SIZE(pdata->gpio_cfg); i++) {
2079                 if ((!pdata->gpio_cfg[i]) ||
2080                     (pdata->gpio_cfg[i] > WM8903_GPIO_CONFIG_ZERO))
2081                         continue;
2082 
2083                 regmap_write(wm8903->regmap, WM8903_GPIO_CONTROL_1 + i,
2084                                 pdata->gpio_cfg[i] & 0x7fff);
2085 
2086                 val = (pdata->gpio_cfg[i] & WM8903_GP1_FN_MASK)
2087                         >> WM8903_GP1_FN_SHIFT;
2088 
2089                 switch (val) {
2090                 case WM8903_GPn_FN_MICBIAS_CURRENT_DETECT:
2091                 case WM8903_GPn_FN_MICBIAS_SHORT_DETECT:
2092                         mic_gpio = true;
2093                         break;
2094                 default:
2095                         break;
2096                 }
2097         }
2098 
2099         /* Set up microphone detection */
2100         regmap_write(wm8903->regmap, WM8903_MIC_BIAS_CONTROL_0,
2101                      pdata->micdet_cfg);
2102 
2103         /* Microphone detection needs the WSEQ clock */
2104         if (pdata->micdet_cfg)
2105                 regmap_update_bits(wm8903->regmap, WM8903_WRITE_SEQUENCER_0,
2106                                    WM8903_WSEQ_ENA, WM8903_WSEQ_ENA);
2107 
2108         /* If microphone detection is enabled by pdata but
2109          * detected via IRQ then interrupts can be lost before
2110          * the machine driver has set up microphone detection
2111          * IRQs as the IRQs are clear on read.  The detection
2112          * will be enabled when the machine driver configures.
2113          */
2114         WARN_ON(!mic_gpio && (pdata->micdet_cfg & WM8903_MICDET_ENA));
2115 
2116         wm8903->mic_delay = pdata->micdet_delay;
2117 
2118         if (i2c->irq) {
2119                 if (pdata->irq_active_low) {
2120                         trigger = IRQF_TRIGGER_LOW;
2121                         irq_pol = WM8903_IRQ_POL;
2122                 } else {
2123                         trigger = IRQF_TRIGGER_HIGH;
2124                         irq_pol = 0;
2125                 }
2126 
2127                 regmap_update_bits(wm8903->regmap, WM8903_INTERRUPT_CONTROL,
2128                                    WM8903_IRQ_POL, irq_pol);
2129 
2130                 ret = request_threaded_irq(i2c->irq, NULL, wm8903_irq,
2131                                            trigger | IRQF_ONESHOT,
2132                                            "wm8903", wm8903);
2133                 if (ret != 0) {
2134                         dev_err(wm8903->dev, "Failed to request IRQ: %d\n",
2135                                 ret);
2136                         return ret;
2137                 }
2138 
2139                 /* Enable write sequencer interrupts */
2140                 regmap_update_bits(wm8903->regmap,
2141                                    WM8903_INTERRUPT_STATUS_1_MASK,
2142                                    WM8903_IM_WSEQ_BUSY_EINT, 0);
2143         }
2144 
2145         /* Latch volume update bits */
2146         regmap_update_bits(wm8903->regmap, WM8903_ADC_DIGITAL_VOLUME_LEFT,
2147                            WM8903_ADCVU, WM8903_ADCVU);
2148         regmap_update_bits(wm8903->regmap, WM8903_ADC_DIGITAL_VOLUME_RIGHT,
2149                            WM8903_ADCVU, WM8903_ADCVU);
2150 
2151         regmap_update_bits(wm8903->regmap, WM8903_DAC_DIGITAL_VOLUME_LEFT,
2152                            WM8903_DACVU, WM8903_DACVU);
2153         regmap_update_bits(wm8903->regmap, WM8903_DAC_DIGITAL_VOLUME_RIGHT,
2154                            WM8903_DACVU, WM8903_DACVU);
2155 
2156         regmap_update_bits(wm8903->regmap, WM8903_ANALOGUE_OUT1_LEFT,
2157                            WM8903_HPOUTVU, WM8903_HPOUTVU);
2158         regmap_update_bits(wm8903->regmap, WM8903_ANALOGUE_OUT1_RIGHT,
2159                            WM8903_HPOUTVU, WM8903_HPOUTVU);
2160 
2161         regmap_update_bits(wm8903->regmap, WM8903_ANALOGUE_OUT2_LEFT,
2162                            WM8903_LINEOUTVU, WM8903_LINEOUTVU);
2163         regmap_update_bits(wm8903->regmap, WM8903_ANALOGUE_OUT2_RIGHT,
2164                            WM8903_LINEOUTVU, WM8903_LINEOUTVU);
2165 
2166         regmap_update_bits(wm8903->regmap, WM8903_ANALOGUE_OUT3_LEFT,
2167                            WM8903_SPKVU, WM8903_SPKVU);
2168         regmap_update_bits(wm8903->regmap, WM8903_ANALOGUE_OUT3_RIGHT,
2169                            WM8903_SPKVU, WM8903_SPKVU);
2170 
2171         /* Enable DAC soft mute by default */
2172         regmap_update_bits(wm8903->regmap, WM8903_DAC_DIGITAL_1,
2173                            WM8903_DAC_MUTEMODE | WM8903_DAC_MUTE,
2174                            WM8903_DAC_MUTEMODE | WM8903_DAC_MUTE);
2175 
2176         ret = devm_snd_soc_register_component(&i2c->dev,
2177                         &soc_component_dev_wm8903, &wm8903_dai, 1);
2178         if (ret != 0)
2179                 goto err;
2180 
2181         return 0;
2182 err:
2183         regulator_bulk_disable(ARRAY_SIZE(wm8903->supplies),
2184                                wm8903->supplies);
2185         return ret;
2186 }
2187 
2188 static int wm8903_i2c_remove(struct i2c_client *client)
2189 {
2190         struct wm8903_priv *wm8903 = i2c_get_clientdata(client);
2191 
2192         regulator_bulk_disable(ARRAY_SIZE(wm8903->supplies),
2193                                wm8903->supplies);
2194         if (client->irq)
2195                 free_irq(client->irq, wm8903);
2196         wm8903_free_gpio(wm8903);
2197 
2198         return 0;
2199 }
2200 
2201 static const struct of_device_id wm8903_of_match[] = {
2202         { .compatible = "wlf,wm8903", },
2203         {},
2204 };
2205 MODULE_DEVICE_TABLE(of, wm8903_of_match);
2206 
2207 static const struct i2c_device_id wm8903_i2c_id[] = {
2208         { "wm8903", 0 },
2209         { }
2210 };
2211 MODULE_DEVICE_TABLE(i2c, wm8903_i2c_id);
2212 
2213 static struct i2c_driver wm8903_i2c_driver = {
2214         .driver = {
2215                 .name = "wm8903",
2216                 .of_match_table = wm8903_of_match,
2217         },
2218         .probe =    wm8903_i2c_probe,
2219         .remove =   wm8903_i2c_remove,
2220         .id_table = wm8903_i2c_id,
2221 };
2222 
2223 module_i2c_driver(wm8903_i2c_driver);
2224 
2225 MODULE_DESCRIPTION("ASoC WM8903 driver");
2226 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.cm>");
2227 MODULE_LICENSE("GPL");

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