sound/soc/codecs/wm8904.c

   1 /*
   2  * wm8904.c  --  WM8904 ALSA SoC Audio driver
   3  *
   4  * Copyright 2009-12 Wolfson Microelectronics plc
   5  *
   6  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
   7  *
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13
  14 #include <linux/clk.h>
  15 #include <linux/module.h>
  16 #include <linux/moduleparam.h>
  17 #include <linux/init.h>
  18 #include <linux/delay.h>
  19 #include <linux/pm.h>
  20 #include <linux/i2c.h>
  21 #include <linux/regmap.h>
  22 #include <linux/regulator/consumer.h>
  23 #include <linux/slab.h>
  24 #include <sound/core.h>
  25 #include <sound/pcm.h>
  26 #include <sound/pcm_params.h>
  27 #include <sound/soc.h>
  28 #include <sound/initval.h>
  29 #include <sound/tlv.h>
  30 #include <sound/wm8904.h>
  31
  32 #include "wm8904.h"
  33
  34 enum wm8904_type {
  35         WM8904,
  36         WM8912,
  37 };
  38
  39 #define WM8904_NUM_DCS_CHANNELS 4
  40
  41 #define WM8904_NUM_SUPPLIES 5
  42 static const char *wm8904_supply_names[WM8904_NUM_SUPPLIES] = {
  43         "DCVDD",
  44         "DBVDD",
  45         "AVDD",
  46         "CPVDD",
  47         "MICVDD",
  48 };
  49
  50 /* codec private data */
  51 struct wm8904_priv {
  52         struct regmap *regmap;
  53         struct clk *mclk;
  54
  55         enum wm8904_type devtype;
  56
  57         struct regulator_bulk_data supplies[WM8904_NUM_SUPPLIES];
  58
  59         struct wm8904_pdata *pdata;
  60
  61         int deemph;
  62
  63         /* Platform provided DRC configuration */
  64         const char **drc_texts;
  65         int drc_cfg;
  66         struct soc_enum drc_enum;
  67
  68         /* Platform provided ReTune mobile configuration */
  69         int num_retune_mobile_texts;
  70         const char **retune_mobile_texts;
  71         int retune_mobile_cfg;
  72         struct soc_enum retune_mobile_enum;
  73
  74         /* FLL setup */
  75         int fll_src;
  76         int fll_fref;
  77         int fll_fout;
  78
  79         /* Clocking configuration */
  80         unsigned int mclk_rate;
  81         int sysclk_src;
  82         unsigned int sysclk_rate;
  83
  84         int tdm_width;
  85         int tdm_slots;
  86         int bclk;
  87         int fs;
  88
  89         /* DC servo configuration - cached offset values */
  90         int dcs_state[WM8904_NUM_DCS_CHANNELS];
  91 };
  92
  93 static const struct reg_default wm8904_reg_defaults[] = {
  94         { 4,   0x0018 },     /* R4   - Bias Control 0 */
  95         { 5,   0x0000 },     /* R5   - VMID Control 0 */
  96         { 6,   0x0000 },     /* R6   - Mic Bias Control 0 */
  97         { 7,   0x0000 },     /* R7   - Mic Bias Control 1 */
  98         { 8,   0x0001 },     /* R8   - Analogue DAC 0 */
  99         { 9,   0x9696 },     /* R9   - mic Filter Control */
 100         { 10,  0x0001 },     /* R10  - Analogue ADC 0 */
 101         { 12,  0x0000 },     /* R12  - Power Management 0 */
 102         { 14,  0x0000 },     /* R14  - Power Management 2 */
 103         { 15,  0x0000 },     /* R15  - Power Management 3 */
 104         { 18,  0x0000 },     /* R18  - Power Management 6 */
 105         { 20,  0x945E },     /* R20  - Clock Rates 0 */
 106         { 21,  0x0C05 },     /* R21  - Clock Rates 1 */
 107         { 22,  0x0006 },     /* R22  - Clock Rates 2 */
 108         { 24,  0x0050 },     /* R24  - Audio Interface 0 */
 109         { 25,  0x000A },     /* R25  - Audio Interface 1 */
 110         { 26,  0x00E4 },     /* R26  - Audio Interface 2 */
 111         { 27,  0x0040 },     /* R27  - Audio Interface 3 */
 112         { 30,  0x00C0 },     /* R30  - DAC Digital Volume Left */
 113         { 31,  0x00C0 },     /* R31  - DAC Digital Volume Right */
 114         { 32,  0x0000 },     /* R32  - DAC Digital 0 */
 115         { 33,  0x0008 },     /* R33  - DAC Digital 1 */
 116         { 36,  0x00C0 },     /* R36  - ADC Digital Volume Left */
 117         { 37,  0x00C0 },     /* R37  - ADC Digital Volume Right */
 118         { 38,  0x0010 },     /* R38  - ADC Digital 0 */
 119         { 39,  0x0000 },     /* R39  - Digital Microphone 0 */
 120         { 40,  0x01AF },     /* R40  - DRC 0 */
 121         { 41,  0x3248 },     /* R41  - DRC 1 */
 122         { 42,  0x0000 },     /* R42  - DRC 2 */
 123         { 43,  0x0000 },     /* R43  - DRC 3 */
 124         { 44,  0x0085 },     /* R44  - Analogue Left Input 0 */
 125         { 45,  0x0085 },     /* R45  - Analogue Right Input 0 */
 126         { 46,  0x0044 },     /* R46  - Analogue Left Input 1 */
 127         { 47,  0x0044 },     /* R47  - Analogue Right Input 1 */
 128         { 57,  0x002D },     /* R57  - Analogue OUT1 Left */
 129         { 58,  0x002D },     /* R58  - Analogue OUT1 Right */
 130         { 59,  0x0039 },     /* R59  - Analogue OUT2 Left */
 131         { 60,  0x0039 },     /* R60  - Analogue OUT2 Right */
 132         { 61,  0x0000 },     /* R61  - Analogue OUT12 ZC */
 133         { 67,  0x0000 },     /* R67  - DC Servo 0 */
 134         { 69,  0xAAAA },     /* R69  - DC Servo 2 */
 135         { 71,  0xAAAA },     /* R71  - DC Servo 4 */
 136         { 72,  0xAAAA },     /* R72  - DC Servo 5 */
 137         { 90,  0x0000 },     /* R90  - Analogue HP 0 */
 138         { 94,  0x0000 },     /* R94  - Analogue Lineout 0 */
 139         { 98,  0x0000 },     /* R98  - Charge Pump 0 */
 140         { 104, 0x0004 },     /* R104 - Class W 0 */
 141         { 108, 0x0000 },     /* R108 - Write Sequencer 0 */
 142         { 109, 0x0000 },     /* R109 - Write Sequencer 1 */
 143         { 110, 0x0000 },     /* R110 - Write Sequencer 2 */
 144         { 111, 0x0000 },     /* R111 - Write Sequencer 3 */
 145         { 112, 0x0000 },     /* R112 - Write Sequencer 4 */
 146         { 116, 0x0000 },     /* R116 - FLL Control 1 */
 147         { 117, 0x0007 },     /* R117 - FLL Control 2 */
 148         { 118, 0x0000 },     /* R118 - FLL Control 3 */
 149         { 119, 0x2EE0 },     /* R119 - FLL Control 4 */
 150         { 120, 0x0004 },     /* R120 - FLL Control 5 */
 151         { 121, 0x0014 },     /* R121 - GPIO Control 1 */
 152         { 122, 0x0010 },     /* R122 - GPIO Control 2 */
 153         { 123, 0x0010 },     /* R123 - GPIO Control 3 */
 154         { 124, 0x0000 },     /* R124 - GPIO Control 4 */
 155         { 126, 0x0000 },     /* R126 - Digital Pulls */
 156         { 128, 0xFFFF },     /* R128 - Interrupt Status Mask */
 157         { 129, 0x0000 },     /* R129 - Interrupt Polarity */
 158         { 130, 0x0000 },     /* R130 - Interrupt Debounce */
 159         { 134, 0x0000 },     /* R134 - EQ1 */
 160         { 135, 0x000C },     /* R135 - EQ2 */
 161         { 136, 0x000C },     /* R136 - EQ3 */
 162         { 137, 0x000C },     /* R137 - EQ4 */
 163         { 138, 0x000C },     /* R138 - EQ5 */
 164         { 139, 0x000C },     /* R139 - EQ6 */
 165         { 140, 0x0FCA },     /* R140 - EQ7 */
 166         { 141, 0x0400 },     /* R141 - EQ8 */
 167         { 142, 0x00D8 },     /* R142 - EQ9 */
 168         { 143, 0x1EB5 },     /* R143 - EQ10 */
 169         { 144, 0xF145 },     /* R144 - EQ11 */
 170         { 145, 0x0B75 },     /* R145 - EQ12 */
 171         { 146, 0x01C5 },     /* R146 - EQ13 */
 172         { 147, 0x1C58 },     /* R147 - EQ14 */
 173         { 148, 0xF373 },     /* R148 - EQ15 */
 174         { 149, 0x0A54 },     /* R149 - EQ16 */
 175         { 150, 0x0558 },     /* R150 - EQ17 */
 176         { 151, 0x168E },     /* R151 - EQ18 */
 177         { 152, 0xF829 },     /* R152 - EQ19 */
 178         { 153, 0x07AD },     /* R153 - EQ20 */
 179         { 154, 0x1103 },     /* R154 - EQ21 */
 180         { 155, 0x0564 },     /* R155 - EQ22 */
 181         { 156, 0x0559 },     /* R156 - EQ23 */
 182         { 157, 0x4000 },     /* R157 - EQ24 */
 183         { 161, 0x0000 },     /* R161 - Control Interface Test 1 */
 184         { 204, 0x0000 },     /* R204 - Analogue Output Bias 0 */
 185         { 247, 0x0000 },     /* R247 - FLL NCO Test 0 */
 186         { 248, 0x0019 },     /* R248 - FLL NCO Test 1 */
 187 };
 188
 189 static bool wm8904_volatile_register(struct device *dev, unsigned int reg)
 190 {
 191         switch (reg) {
 192         case WM8904_SW_RESET_AND_ID:
 193         case WM8904_REVISION:
 194         case WM8904_DC_SERVO_1:
 195         case WM8904_DC_SERVO_6:
 196         case WM8904_DC_SERVO_7:
 197         case WM8904_DC_SERVO_8:
 198         case WM8904_DC_SERVO_9:
 199         case WM8904_DC_SERVO_READBACK_0:
 200         case WM8904_INTERRUPT_STATUS:
 201                 return true;
 202         default:
 203                 return false;
 204         }
 205 }
 206
 207 static bool wm8904_readable_register(struct device *dev, unsigned int reg)
 208 {
 209         switch (reg) {
 210         case WM8904_SW_RESET_AND_ID:
 211         case WM8904_REVISION:
 212         case WM8904_BIAS_CONTROL_0:
 213         case WM8904_VMID_CONTROL_0:
 214         case WM8904_MIC_BIAS_CONTROL_0:
 215         case WM8904_MIC_BIAS_CONTROL_1:
 216         case WM8904_ANALOGUE_DAC_0:
 217         case WM8904_MIC_FILTER_CONTROL:
 218         case WM8904_ANALOGUE_ADC_0:
 219         case WM8904_POWER_MANAGEMENT_0:
 220         case WM8904_POWER_MANAGEMENT_2:
 221         case WM8904_POWER_MANAGEMENT_3:
 222         case WM8904_POWER_MANAGEMENT_6:
 223         case WM8904_CLOCK_RATES_0:
 224         case WM8904_CLOCK_RATES_1:
 225         case WM8904_CLOCK_RATES_2:
 226         case WM8904_AUDIO_INTERFACE_0:
 227         case WM8904_AUDIO_INTERFACE_1:
 228         case WM8904_AUDIO_INTERFACE_2:
 229         case WM8904_AUDIO_INTERFACE_3:
 230         case WM8904_DAC_DIGITAL_VOLUME_LEFT:
 231         case WM8904_DAC_DIGITAL_VOLUME_RIGHT:
 232         case WM8904_DAC_DIGITAL_0:
 233         case WM8904_DAC_DIGITAL_1:
 234         case WM8904_ADC_DIGITAL_VOLUME_LEFT:
 235         case WM8904_ADC_DIGITAL_VOLUME_RIGHT:
 236         case WM8904_ADC_DIGITAL_0:
 237         case WM8904_DIGITAL_MICROPHONE_0:
 238         case WM8904_DRC_0:
 239         case WM8904_DRC_1:
 240         case WM8904_DRC_2:
 241         case WM8904_DRC_3:
 242         case WM8904_ANALOGUE_LEFT_INPUT_0:
 243         case WM8904_ANALOGUE_RIGHT_INPUT_0:
 244         case WM8904_ANALOGUE_LEFT_INPUT_1:
 245         case WM8904_ANALOGUE_RIGHT_INPUT_1:
 246         case WM8904_ANALOGUE_OUT1_LEFT:
 247         case WM8904_ANALOGUE_OUT1_RIGHT:
 248         case WM8904_ANALOGUE_OUT2_LEFT:
 249         case WM8904_ANALOGUE_OUT2_RIGHT:
 250         case WM8904_ANALOGUE_OUT12_ZC:
 251         case WM8904_DC_SERVO_0:
 252         case WM8904_DC_SERVO_1:
 253         case WM8904_DC_SERVO_2:
 254         case WM8904_DC_SERVO_4:
 255         case WM8904_DC_SERVO_5:
 256         case WM8904_DC_SERVO_6:
 257         case WM8904_DC_SERVO_7:
 258         case WM8904_DC_SERVO_8:
 259         case WM8904_DC_SERVO_9:
 260         case WM8904_DC_SERVO_READBACK_0:
 261         case WM8904_ANALOGUE_HP_0:
 262         case WM8904_ANALOGUE_LINEOUT_0:
 263         case WM8904_CHARGE_PUMP_0:
 264         case WM8904_CLASS_W_0:
 265         case WM8904_WRITE_SEQUENCER_0:
 266         case WM8904_WRITE_SEQUENCER_1:
 267         case WM8904_WRITE_SEQUENCER_2:
 268         case WM8904_WRITE_SEQUENCER_3:
 269         case WM8904_WRITE_SEQUENCER_4:
 270         case WM8904_FLL_CONTROL_1:
 271         case WM8904_FLL_CONTROL_2:
 272         case WM8904_FLL_CONTROL_3:
 273         case WM8904_FLL_CONTROL_4:
 274         case WM8904_FLL_CONTROL_5:
 275         case WM8904_GPIO_CONTROL_1:
 276         case WM8904_GPIO_CONTROL_2:
 277         case WM8904_GPIO_CONTROL_3:
 278         case WM8904_GPIO_CONTROL_4:
 279         case WM8904_DIGITAL_PULLS:
 280         case WM8904_INTERRUPT_STATUS:
 281         case WM8904_INTERRUPT_STATUS_MASK:
 282         case WM8904_INTERRUPT_POLARITY:
 283         case WM8904_INTERRUPT_DEBOUNCE:
 284         case WM8904_EQ1:
 285         case WM8904_EQ2:
 286         case WM8904_EQ3:
 287         case WM8904_EQ4:
 288         case WM8904_EQ5:
 289         case WM8904_EQ6:
 290         case WM8904_EQ7:
 291         case WM8904_EQ8:
 292         case WM8904_EQ9:
 293         case WM8904_EQ10:
 294         case WM8904_EQ11:
 295         case WM8904_EQ12:
 296         case WM8904_EQ13:
 297         case WM8904_EQ14:
 298         case WM8904_EQ15:
 299         case WM8904_EQ16:
 300         case WM8904_EQ17:
 301         case WM8904_EQ18:
 302         case WM8904_EQ19:
 303         case WM8904_EQ20:
 304         case WM8904_EQ21:
 305         case WM8904_EQ22:
 306         case WM8904_EQ23:
 307         case WM8904_EQ24:
 308         case WM8904_CONTROL_INTERFACE_TEST_1:
 309         case WM8904_ADC_TEST_0:
 310         case WM8904_ANALOGUE_OUTPUT_BIAS_0:
 311         case WM8904_FLL_NCO_TEST_0:
 312         case WM8904_FLL_NCO_TEST_1:
 313                 return true;
 314         default:
 315                 return false;
 316         }
 317 }
 318
 319 static int wm8904_configure_clocking(struct snd_soc_component *component)
 320 {
 321         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
 322         unsigned int clock0, clock2, rate;
 323
 324         /* Gate the clock while we're updating to avoid misclocking */
 325         clock2 = snd_soc_component_read32(component, WM8904_CLOCK_RATES_2);
 326         snd_soc_component_update_bits(component, WM8904_CLOCK_RATES_2,
 327                             WM8904_SYSCLK_SRC, 0);
 328
 329         /* This should be done on init() for bypass paths */
 330         switch (wm8904->sysclk_src) {
 331         case WM8904_CLK_MCLK:
 332                 dev_dbg(component->dev, "Using %dHz MCLK\n", wm8904->mclk_rate);
 333
 334                 clock2 &= ~WM8904_SYSCLK_SRC;
 335                 rate = wm8904->mclk_rate;
 336
 337                 /* Ensure the FLL is stopped */
 338                 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_1,
 339                                     WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0);
 340                 break;
 341
 342         case WM8904_CLK_FLL:
 343                 dev_dbg(component->dev, "Using %dHz FLL clock\n",
 344                         wm8904->fll_fout);
 345
 346                 clock2 |= WM8904_SYSCLK_SRC;
 347                 rate = wm8904->fll_fout;
 348                 break;
 349
 350         default:
 351                 dev_err(component->dev, "System clock not configured\n");
 352                 return -EINVAL;
 353         }
 354
 355         /* SYSCLK shouldn't be over 13.5MHz */
 356         if (rate > 13500000) {
 357                 clock0 = WM8904_MCLK_DIV;
 358                 wm8904->sysclk_rate = rate / 2;
 359         } else {
 360                 clock0 = 0;
 361                 wm8904->sysclk_rate = rate;
 362         }
 363
 364         snd_soc_component_update_bits(component, WM8904_CLOCK_RATES_0, WM8904_MCLK_DIV,
 365                             clock0);
 366
 367         snd_soc_component_update_bits(component, WM8904_CLOCK_RATES_2,
 368                             WM8904_CLK_SYS_ENA | WM8904_SYSCLK_SRC, clock2);
 369
 370         dev_dbg(component->dev, "CLK_SYS is %dHz\n", wm8904->sysclk_rate);
 371
 372         return 0;
 373 }
 374
 375 static void wm8904_set_drc(struct snd_soc_component *component)
 376 {
 377         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
 378         struct wm8904_pdata *pdata = wm8904->pdata;
 379         int save, i;
 380
 381         /* Save any enables; the configuration should clear them. */
 382         save = snd_soc_component_read32(component, WM8904_DRC_0);
 383
 384         for (i = 0; i < WM8904_DRC_REGS; i++)
 385                 snd_soc_component_update_bits(component, WM8904_DRC_0 + i, 0xffff,
 386                                     pdata->drc_cfgs[wm8904->drc_cfg].regs[i]);
 387
 388         /* Reenable the DRC */
 389         snd_soc_component_update_bits(component, WM8904_DRC_0,
 390                             WM8904_DRC_ENA | WM8904_DRC_DAC_PATH, save);
 391 }
 392
 393 static int wm8904_put_drc_enum(struct snd_kcontrol *kcontrol,
 394                                struct snd_ctl_elem_value *ucontrol)
 395 {
 396         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 397         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
 398         struct wm8904_pdata *pdata = wm8904->pdata;
 399         int value = ucontrol->value.enumerated.item[0];
 400
 401         if (value >= pdata->num_drc_cfgs)
 402                 return -EINVAL;
 403
 404         wm8904->drc_cfg = value;
 405
 406         wm8904_set_drc(component);
 407
 408         return 0;
 409 }
 410
 411 static int wm8904_get_drc_enum(struct snd_kcontrol *kcontrol,
 412                                struct snd_ctl_elem_value *ucontrol)
 413 {
 414         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 415         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
 416
 417         ucontrol->value.enumerated.item[0] = wm8904->drc_cfg;
 418
 419         return 0;
 420 }
 421
 422 static void wm8904_set_retune_mobile(struct snd_soc_component *component)
 423 {
 424         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
 425         struct wm8904_pdata *pdata = wm8904->pdata;
 426         int best, best_val, save, i, cfg;
 427
 428         if (!pdata || !wm8904->num_retune_mobile_texts)
 429                 return;
 430
 431         /* Find the version of the currently selected configuration
 432          * with the nearest sample rate. */
 433         cfg = wm8904->retune_mobile_cfg;
 434         best = 0;
 435         best_val = INT_MAX;
 436         for (i = 0; i < pdata->num_retune_mobile_cfgs; i++) {
 437                 if (strcmp(pdata->retune_mobile_cfgs[i].name,
 438                            wm8904->retune_mobile_texts[cfg]) == 0 &&
 439                     abs(pdata->retune_mobile_cfgs[i].rate
 440                         - wm8904->fs) < best_val) {
 441                         best = i;
 442                         best_val = abs(pdata->retune_mobile_cfgs[i].rate
 443                                        - wm8904->fs);
 444                 }
 445         }
 446
 447         dev_dbg(component->dev, "ReTune Mobile %s/%dHz for %dHz sample rate\n",
 448                 pdata->retune_mobile_cfgs[best].name,
 449                 pdata->retune_mobile_cfgs[best].rate,
 450                 wm8904->fs);
 451
 452         /* The EQ will be disabled while reconfiguring it, remember the
 453          * current configuration.
 454          */
 455         save = snd_soc_component_read32(component, WM8904_EQ1);
 456
 457         for (i = 0; i < WM8904_EQ_REGS; i++)
 458                 snd_soc_component_update_bits(component, WM8904_EQ1 + i, 0xffff,
 459                                 pdata->retune_mobile_cfgs[best].regs[i]);
 460
 461         snd_soc_component_update_bits(component, WM8904_EQ1, WM8904_EQ_ENA, save);
 462 }
 463
 464 static int wm8904_put_retune_mobile_enum(struct snd_kcontrol *kcontrol,
 465                                          struct snd_ctl_elem_value *ucontrol)
 466 {
 467         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 468         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
 469         struct wm8904_pdata *pdata = wm8904->pdata;
 470         int value = ucontrol->value.enumerated.item[0];
 471
 472         if (value >= pdata->num_retune_mobile_cfgs)
 473                 return -EINVAL;
 474
 475         wm8904->retune_mobile_cfg = value;
 476
 477         wm8904_set_retune_mobile(component);
 478
 479         return 0;
 480 }
 481
 482 static int wm8904_get_retune_mobile_enum(struct snd_kcontrol *kcontrol,
 483                                          struct snd_ctl_elem_value *ucontrol)
 484 {
 485         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 486         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
 487
 488         ucontrol->value.enumerated.item[0] = wm8904->retune_mobile_cfg;
 489
 490         return 0;
 491 }
 492
 493 static int deemph_settings[] = { 0, 32000, 44100, 48000 };
 494
 495 static int wm8904_set_deemph(struct snd_soc_component *component)
 496 {
 497         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
 498         int val, i, best;
 499
 500         /* If we're using deemphasis select the nearest available sample
 501          * rate.
 502          */
 503         if (wm8904->deemph) {
 504                 best = 1;
 505                 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
 506                         if (abs(deemph_settings[i] - wm8904->fs) <
 507                             abs(deemph_settings[best] - wm8904->fs))
 508                                 best = i;
 509                 }
 510
 511                 val = best << WM8904_DEEMPH_SHIFT;
 512         } else {
 513                 val = 0;
 514         }
 515
 516         dev_dbg(component->dev, "Set deemphasis %d\n", val);
 517
 518         return snd_soc_component_update_bits(component, WM8904_DAC_DIGITAL_1,
 519                                    WM8904_DEEMPH_MASK, val);
 520 }
 521
 522 static int wm8904_get_deemph(struct snd_kcontrol *kcontrol,
 523                              struct snd_ctl_elem_value *ucontrol)
 524 {
 525         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 526         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
 527
 528         ucontrol->value.integer.value[0] = wm8904->deemph;
 529         return 0;
 530 }
 531
 532 static int wm8904_put_deemph(struct snd_kcontrol *kcontrol,
 533                               struct snd_ctl_elem_value *ucontrol)
 534 {
 535         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 536         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
 537         unsigned int deemph = ucontrol->value.integer.value[0];
 538
 539         if (deemph > 1)
 540                 return -EINVAL;
 541
 542         wm8904->deemph = deemph;
 543
 544         return wm8904_set_deemph(component);
 545 }
 546
 547 static const DECLARE_TLV_DB_SCALE(dac_boost_tlv, 0, 600, 0);
 548 static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1);
 549 static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
 550 static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -3600, 300, 0);
 551 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
 552
 553 static const char *input_mode_text[] = {
 554         "Single-Ended", "Differential Line", "Differential Mic"
 555 };
 556
 557 static SOC_ENUM_SINGLE_DECL(lin_mode,
 558                             WM8904_ANALOGUE_LEFT_INPUT_1, 0,
 559                             input_mode_text);
 560
 561 static SOC_ENUM_SINGLE_DECL(rin_mode,
 562                             WM8904_ANALOGUE_RIGHT_INPUT_1, 0,
 563                             input_mode_text);
 564
 565 static const char *hpf_mode_text[] = {
 566         "Hi-fi", "Voice 1", "Voice 2", "Voice 3"
 567 };
 568
 569 static SOC_ENUM_SINGLE_DECL(hpf_mode, WM8904_ADC_DIGITAL_0, 5,
 570                             hpf_mode_text);
 571
 572 static int wm8904_adc_osr_put(struct snd_kcontrol *kcontrol,
 573                               struct snd_ctl_elem_value *ucontrol)
 574 {
 575         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 576         unsigned int val;
 577         int ret;
 578
 579         ret = snd_soc_put_volsw(kcontrol, ucontrol);
 580         if (ret < 0)
 581                 return ret;
 582
 583         if (ucontrol->value.integer.value[0])
 584                 val = 0;
 585         else
 586                 val = WM8904_ADC_128_OSR_TST_MODE | WM8904_ADC_BIASX1P5;
 587
 588         snd_soc_component_update_bits(component, WM8904_ADC_TEST_0,
 589                             WM8904_ADC_128_OSR_TST_MODE | WM8904_ADC_BIASX1P5,
 590                             val);
 591
 592         return ret;
 593 }
 594
 595 static const struct snd_kcontrol_new wm8904_adc_snd_controls[] = {
 596 SOC_DOUBLE_R_TLV("Digital Capture Volume", WM8904_ADC_DIGITAL_VOLUME_LEFT,
 597                  WM8904_ADC_DIGITAL_VOLUME_RIGHT, 1, 119, 0, digital_tlv),
 598
 599 SOC_ENUM("Left Capture Mode", lin_mode),
 600 SOC_ENUM("Right Capture Mode", rin_mode),
 601
 602 /* No TLV since it depends on mode */
 603 SOC_DOUBLE_R("Capture Volume", WM8904_ANALOGUE_LEFT_INPUT_0,
 604              WM8904_ANALOGUE_RIGHT_INPUT_0, 0, 31, 0),
 605 SOC_DOUBLE_R("Capture Switch", WM8904_ANALOGUE_LEFT_INPUT_0,
 606              WM8904_ANALOGUE_RIGHT_INPUT_0, 7, 1, 1),
 607
 608 SOC_SINGLE("High Pass Filter Switch", WM8904_ADC_DIGITAL_0, 4, 1, 0),
 609 SOC_ENUM("High Pass Filter Mode", hpf_mode),
 610 SOC_SINGLE_EXT("ADC 128x OSR Switch", WM8904_ANALOGUE_ADC_0, 0, 1, 0,
 611         snd_soc_get_volsw, wm8904_adc_osr_put),
 612 };
 613
 614 static const char *drc_path_text[] = {
 615         "ADC", "DAC"
 616 };
 617
 618 static SOC_ENUM_SINGLE_DECL(drc_path, WM8904_DRC_0, 14, drc_path_text);
 619
 620 static const struct snd_kcontrol_new wm8904_dac_snd_controls[] = {
 621 SOC_SINGLE_TLV("Digital Playback Boost Volume",
 622                WM8904_AUDIO_INTERFACE_0, 9, 3, 0, dac_boost_tlv),
 623 SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8904_DAC_DIGITAL_VOLUME_LEFT,
 624                  WM8904_DAC_DIGITAL_VOLUME_RIGHT, 1, 96, 0, digital_tlv),
 625
 626 SOC_DOUBLE_R_TLV("Headphone Volume", WM8904_ANALOGUE_OUT1_LEFT,
 627                  WM8904_ANALOGUE_OUT1_RIGHT, 0, 63, 0, out_tlv),
 628 SOC_DOUBLE_R("Headphone Switch", WM8904_ANALOGUE_OUT1_LEFT,
 629              WM8904_ANALOGUE_OUT1_RIGHT, 8, 1, 1),
 630 SOC_DOUBLE_R("Headphone ZC Switch", WM8904_ANALOGUE_OUT1_LEFT,
 631              WM8904_ANALOGUE_OUT1_RIGHT, 6, 1, 0),
 632
 633 SOC_DOUBLE_R_TLV("Line Output Volume", WM8904_ANALOGUE_OUT2_LEFT,
 634                  WM8904_ANALOGUE_OUT2_RIGHT, 0, 63, 0, out_tlv),
 635 SOC_DOUBLE_R("Line Output Switch", WM8904_ANALOGUE_OUT2_LEFT,
 636              WM8904_ANALOGUE_OUT2_RIGHT, 8, 1, 1),
 637 SOC_DOUBLE_R("Line Output ZC Switch", WM8904_ANALOGUE_OUT2_LEFT,
 638              WM8904_ANALOGUE_OUT2_RIGHT, 6, 1, 0),
 639
 640 SOC_SINGLE("EQ Switch", WM8904_EQ1, 0, 1, 0),
 641 SOC_SINGLE("DRC Switch", WM8904_DRC_0, 15, 1, 0),
 642 SOC_ENUM("DRC Path", drc_path),
 643 SOC_SINGLE("DAC OSRx2 Switch", WM8904_DAC_DIGITAL_1, 6, 1, 0),
 644 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
 645                     wm8904_get_deemph, wm8904_put_deemph),
 646 };
 647
 648 static const struct snd_kcontrol_new wm8904_snd_controls[] = {
 649 SOC_DOUBLE_TLV("Digital Sidetone Volume", WM8904_DAC_DIGITAL_0, 4, 8, 15, 0,
 650                sidetone_tlv),
 651 };
 652
 653 static const struct snd_kcontrol_new wm8904_eq_controls[] = {
 654 SOC_SINGLE_TLV("EQ1 Volume", WM8904_EQ2, 0, 24, 0, eq_tlv),
 655 SOC_SINGLE_TLV("EQ2 Volume", WM8904_EQ3, 0, 24, 0, eq_tlv),
 656 SOC_SINGLE_TLV("EQ3 Volume", WM8904_EQ4, 0, 24, 0, eq_tlv),
 657 SOC_SINGLE_TLV("EQ4 Volume", WM8904_EQ5, 0, 24, 0, eq_tlv),
 658 SOC_SINGLE_TLV("EQ5 Volume", WM8904_EQ6, 0, 24, 0, eq_tlv),
 659 };
 660
 661 static int cp_event(struct snd_soc_dapm_widget *w,
 662                     struct snd_kcontrol *kcontrol, int event)
 663 {
 664         if (WARN_ON(event != SND_SOC_DAPM_POST_PMU))
 665                 return -EINVAL;
 666
 667         /* Maximum startup time */
 668         udelay(500);
 669
 670         return 0;
 671 }
 672
 673 static int sysclk_event(struct snd_soc_dapm_widget *w,
 674                          struct snd_kcontrol *kcontrol, int event)
 675 {
 676         struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
 677         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
 678
 679         switch (event) {
 680         case SND_SOC_DAPM_PRE_PMU:
 681                 /* If we're using the FLL then we only start it when
 682                  * required; we assume that the configuration has been
 683                  * done previously and all we need to do is kick it
 684                  * off.
 685                  */
 686                 switch (wm8904->sysclk_src) {
 687                 case WM8904_CLK_FLL:
 688                         snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_1,
 689                                             WM8904_FLL_OSC_ENA,
 690                                             WM8904_FLL_OSC_ENA);
 691
 692                         snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_1,
 693                                             WM8904_FLL_ENA,
 694                                             WM8904_FLL_ENA);
 695                         break;
 696
 697                 default:
 698                         break;
 699                 }
 700                 break;
 701
 702         case SND_SOC_DAPM_POST_PMD:
 703                 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_1,
 704                                     WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0);
 705                 break;
 706         }
 707
 708         return 0;
 709 }
 710
 711 static int out_pga_event(struct snd_soc_dapm_widget *w,
 712                          struct snd_kcontrol *kcontrol, int event)
 713 {
 714         struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
 715         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
 716         int reg, val;
 717         int dcs_mask;
 718         int dcs_l, dcs_r;
 719         int dcs_l_reg, dcs_r_reg;
 720         int timeout;
 721         int pwr_reg;
 722
 723         /* This code is shared between HP and LINEOUT; we do all our
 724          * power management in stereo pairs to avoid latency issues so
 725          * we reuse shift to identify which rather than strcmp() the
 726          * name. */
 727         reg = w->shift;
 728
 729         switch (reg) {
 730         case WM8904_ANALOGUE_HP_0:
 731                 pwr_reg = WM8904_POWER_MANAGEMENT_2;
 732                 dcs_mask = WM8904_DCS_ENA_CHAN_0 | WM8904_DCS_ENA_CHAN_1;
 733                 dcs_r_reg = WM8904_DC_SERVO_8;
 734                 dcs_l_reg = WM8904_DC_SERVO_9;
 735                 dcs_l = 0;
 736                 dcs_r = 1;
 737                 break;
 738         case WM8904_ANALOGUE_LINEOUT_0:
 739                 pwr_reg = WM8904_POWER_MANAGEMENT_3;
 740                 dcs_mask = WM8904_DCS_ENA_CHAN_2 | WM8904_DCS_ENA_CHAN_3;
 741                 dcs_r_reg = WM8904_DC_SERVO_6;
 742                 dcs_l_reg = WM8904_DC_SERVO_7;
 743                 dcs_l = 2;
 744                 dcs_r = 3;
 745                 break;
 746         default:
 747                 WARN(1, "Invalid reg %d\n", reg);
 748                 return -EINVAL;
 749         }
 750
 751         switch (event) {
 752         case SND_SOC_DAPM_PRE_PMU:
 753                 /* Power on the PGAs */
 754                 snd_soc_component_update_bits(component, pwr_reg,
 755                                     WM8904_HPL_PGA_ENA | WM8904_HPR_PGA_ENA,
 756                                     WM8904_HPL_PGA_ENA | WM8904_HPR_PGA_ENA);
 757
 758                 /* Power on the amplifier */
 759                 snd_soc_component_update_bits(component, reg,
 760                                     WM8904_HPL_ENA | WM8904_HPR_ENA,
 761                                     WM8904_HPL_ENA | WM8904_HPR_ENA);
 762
 763
 764                 /* Enable the first stage */
 765                 snd_soc_component_update_bits(component, reg,
 766                                     WM8904_HPL_ENA_DLY | WM8904_HPR_ENA_DLY,
 767                                     WM8904_HPL_ENA_DLY | WM8904_HPR_ENA_DLY);
 768
 769                 /* Power up the DC servo */
 770                 snd_soc_component_update_bits(component, WM8904_DC_SERVO_0,
 771                                     dcs_mask, dcs_mask);
 772
 773                 /* Either calibrate the DC servo or restore cached state
 774                  * if we have that.
 775                  */
 776                 if (wm8904->dcs_state[dcs_l] || wm8904->dcs_state[dcs_r]) {
 777                         dev_dbg(component->dev, "Restoring DC servo state\n");
 778
 779                         snd_soc_component_write(component, dcs_l_reg,
 780                                       wm8904->dcs_state[dcs_l]);
 781                         snd_soc_component_write(component, dcs_r_reg,
 782                                       wm8904->dcs_state[dcs_r]);
 783
 784                         snd_soc_component_write(component, WM8904_DC_SERVO_1, dcs_mask);
 785
 786                         timeout = 20;
 787                 } else {
 788                         dev_dbg(component->dev, "Calibrating DC servo\n");
 789
 790                         snd_soc_component_write(component, WM8904_DC_SERVO_1,
 791                                 dcs_mask << WM8904_DCS_TRIG_STARTUP_0_SHIFT);
 792
 793                         timeout = 500;
 794                 }
 795
 796                 /* Wait for DC servo to complete */
 797                 dcs_mask <<= WM8904_DCS_CAL_COMPLETE_SHIFT;
 798                 do {
 799                         val = snd_soc_component_read32(component, WM8904_DC_SERVO_READBACK_0);
 800                         if ((val & dcs_mask) == dcs_mask)
 801                                 break;
 802
 803                         msleep(1);
 804                 } while (--timeout);
 805
 806                 if ((val & dcs_mask) != dcs_mask)
 807                         dev_warn(component->dev, "DC servo timed out\n");
 808                 else
 809                         dev_dbg(component->dev, "DC servo ready\n");
 810
 811                 /* Enable the output stage */
 812                 snd_soc_component_update_bits(component, reg,
 813                                     WM8904_HPL_ENA_OUTP | WM8904_HPR_ENA_OUTP,
 814                                     WM8904_HPL_ENA_OUTP | WM8904_HPR_ENA_OUTP);
 815                 break;
 816
 817         case SND_SOC_DAPM_POST_PMU:
 818                 /* Unshort the output itself */
 819                 snd_soc_component_update_bits(component, reg,
 820                                     WM8904_HPL_RMV_SHORT |
 821                                     WM8904_HPR_RMV_SHORT,
 822                                     WM8904_HPL_RMV_SHORT |
 823                                     WM8904_HPR_RMV_SHORT);
 824
 825                 break;
 826
 827         case SND_SOC_DAPM_PRE_PMD:
 828                 /* Short the output */
 829                 snd_soc_component_update_bits(component, reg,
 830                                     WM8904_HPL_RMV_SHORT |
 831                                     WM8904_HPR_RMV_SHORT, 0);
 832                 break;
 833
 834         case SND_SOC_DAPM_POST_PMD:
 835                 /* Cache the DC servo configuration; this will be
 836                  * invalidated if we change the configuration. */
 837                 wm8904->dcs_state[dcs_l] = snd_soc_component_read32(component, dcs_l_reg);
 838                 wm8904->dcs_state[dcs_r] = snd_soc_component_read32(component, dcs_r_reg);
 839
 840                 snd_soc_component_update_bits(component, WM8904_DC_SERVO_0,
 841                                     dcs_mask, 0);
 842
 843                 /* Disable the amplifier input and output stages */
 844                 snd_soc_component_update_bits(component, reg,
 845                                     WM8904_HPL_ENA | WM8904_HPR_ENA |
 846                                     WM8904_HPL_ENA_DLY | WM8904_HPR_ENA_DLY |
 847                                     WM8904_HPL_ENA_OUTP | WM8904_HPR_ENA_OUTP,
 848                                     0);
 849
 850                 /* PGAs too */
 851                 snd_soc_component_update_bits(component, pwr_reg,
 852                                     WM8904_HPL_PGA_ENA | WM8904_HPR_PGA_ENA,
 853                                     0);
 854                 break;
 855         }
 856
 857         return 0;
 858 }
 859
 860 static const char *lin_text[] = {
 861         "IN1L", "IN2L", "IN3L"
 862 };
 863
 864 static SOC_ENUM_SINGLE_DECL(lin_enum, WM8904_ANALOGUE_LEFT_INPUT_1, 2,
 865                             lin_text);
 866
 867 static const struct snd_kcontrol_new lin_mux =
 868         SOC_DAPM_ENUM("Left Capture Mux", lin_enum);
 869
 870 static SOC_ENUM_SINGLE_DECL(lin_inv_enum, WM8904_ANALOGUE_LEFT_INPUT_1, 4,
 871                             lin_text);
 872
 873 static const struct snd_kcontrol_new lin_inv_mux =
 874         SOC_DAPM_ENUM("Left Capture Inveting Mux", lin_inv_enum);
 875
 876 static const char *rin_text[] = {
 877         "IN1R", "IN2R", "IN3R"
 878 };
 879
 880 static SOC_ENUM_SINGLE_DECL(rin_enum, WM8904_ANALOGUE_RIGHT_INPUT_1, 2,
 881                             rin_text);
 882
 883 static const struct snd_kcontrol_new rin_mux =
 884         SOC_DAPM_ENUM("Right Capture Mux", rin_enum);
 885
 886 static SOC_ENUM_SINGLE_DECL(rin_inv_enum, WM8904_ANALOGUE_RIGHT_INPUT_1, 4,
 887                             rin_text);
 888
 889 static const struct snd_kcontrol_new rin_inv_mux =
 890         SOC_DAPM_ENUM("Right Capture Inveting Mux", rin_inv_enum);
 891
 892 static const char *aif_text[] = {
 893         "Left", "Right"
 894 };
 895
 896 static SOC_ENUM_SINGLE_DECL(aifoutl_enum, WM8904_AUDIO_INTERFACE_0, 7,
 897                             aif_text);
 898
 899 static const struct snd_kcontrol_new aifoutl_mux =
 900         SOC_DAPM_ENUM("AIFOUTL Mux", aifoutl_enum);
 901
 902 static SOC_ENUM_SINGLE_DECL(aifoutr_enum, WM8904_AUDIO_INTERFACE_0, 6,
 903                             aif_text);
 904
 905 static const struct snd_kcontrol_new aifoutr_mux =
 906         SOC_DAPM_ENUM("AIFOUTR Mux", aifoutr_enum);
 907
 908 static SOC_ENUM_SINGLE_DECL(aifinl_enum, WM8904_AUDIO_INTERFACE_0, 5,
 909                             aif_text);
 910
 911 static const struct snd_kcontrol_new aifinl_mux =
 912         SOC_DAPM_ENUM("AIFINL Mux", aifinl_enum);
 913
 914 static SOC_ENUM_SINGLE_DECL(aifinr_enum, WM8904_AUDIO_INTERFACE_0, 4,
 915                             aif_text);
 916
 917 static const struct snd_kcontrol_new aifinr_mux =
 918         SOC_DAPM_ENUM("AIFINR Mux", aifinr_enum);
 919
 920 static const struct snd_soc_dapm_widget wm8904_core_dapm_widgets[] = {
 921 SND_SOC_DAPM_SUPPLY("SYSCLK", WM8904_CLOCK_RATES_2, 2, 0, sysclk_event,
 922                     SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 923 SND_SOC_DAPM_SUPPLY("CLK_DSP", WM8904_CLOCK_RATES_2, 1, 0, NULL, 0),
 924 SND_SOC_DAPM_SUPPLY("TOCLK", WM8904_CLOCK_RATES_2, 0, 0, NULL, 0),
 925 };
 926
 927 static const struct snd_soc_dapm_widget wm8904_adc_dapm_widgets[] = {
 928 SND_SOC_DAPM_INPUT("IN1L"),
 929 SND_SOC_DAPM_INPUT("IN1R"),
 930 SND_SOC_DAPM_INPUT("IN2L"),
 931 SND_SOC_DAPM_INPUT("IN2R"),
 932 SND_SOC_DAPM_INPUT("IN3L"),
 933 SND_SOC_DAPM_INPUT("IN3R"),
 934
 935 SND_SOC_DAPM_SUPPLY("MICBIAS", WM8904_MIC_BIAS_CONTROL_0, 0, 0, NULL, 0),
 936
 937 SND_SOC_DAPM_MUX("Left Capture Mux", SND_SOC_NOPM, 0, 0, &lin_mux),
 938 SND_SOC_DAPM_MUX("Left Capture Inverting Mux", SND_SOC_NOPM, 0, 0,
 939                  &lin_inv_mux),
 940 SND_SOC_DAPM_MUX("Right Capture Mux", SND_SOC_NOPM, 0, 0, &rin_mux),
 941 SND_SOC_DAPM_MUX("Right Capture Inverting Mux", SND_SOC_NOPM, 0, 0,
 942                  &rin_inv_mux),
 943
 944 SND_SOC_DAPM_PGA("Left Capture PGA", WM8904_POWER_MANAGEMENT_0, 1, 0,
 945                  NULL, 0),
 946 SND_SOC_DAPM_PGA("Right Capture PGA", WM8904_POWER_MANAGEMENT_0, 0, 0,
 947                  NULL, 0),
 948
 949 SND_SOC_DAPM_ADC("ADCL", NULL, WM8904_POWER_MANAGEMENT_6, 1, 0),
 950 SND_SOC_DAPM_ADC("ADCR", NULL, WM8904_POWER_MANAGEMENT_6, 0, 0),
 951
 952 SND_SOC_DAPM_MUX("AIFOUTL Mux", SND_SOC_NOPM, 0, 0, &aifoutl_mux),
 953 SND_SOC_DAPM_MUX("AIFOUTR Mux", SND_SOC_NOPM, 0, 0, &aifoutr_mux),
 954
 955 SND_SOC_DAPM_AIF_OUT("AIFOUTL", "Capture", 0, SND_SOC_NOPM, 0, 0),
 956 SND_SOC_DAPM_AIF_OUT("AIFOUTR", "Capture", 1, SND_SOC_NOPM, 0, 0),
 957 };
 958
 959 static const struct snd_soc_dapm_widget wm8904_dac_dapm_widgets[] = {
 960 SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
 961 SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
 962
 963 SND_SOC_DAPM_MUX("DACL Mux", SND_SOC_NOPM, 0, 0, &aifinl_mux),
 964 SND_SOC_DAPM_MUX("DACR Mux", SND_SOC_NOPM, 0, 0, &aifinr_mux),
 965
 966 SND_SOC_DAPM_DAC("DACL", NULL, WM8904_POWER_MANAGEMENT_6, 3, 0),
 967 SND_SOC_DAPM_DAC("DACR", NULL, WM8904_POWER_MANAGEMENT_6, 2, 0),
 968
 969 SND_SOC_DAPM_SUPPLY("Charge pump", WM8904_CHARGE_PUMP_0, 0, 0, cp_event,
 970                     SND_SOC_DAPM_POST_PMU),
 971
 972 SND_SOC_DAPM_PGA("HPL PGA", SND_SOC_NOPM, 1, 0, NULL, 0),
 973 SND_SOC_DAPM_PGA("HPR PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 974
 975 SND_SOC_DAPM_PGA("LINEL PGA", SND_SOC_NOPM, 1, 0, NULL, 0),
 976 SND_SOC_DAPM_PGA("LINER PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 977
 978 SND_SOC_DAPM_PGA_E("Headphone Output", SND_SOC_NOPM, WM8904_ANALOGUE_HP_0,
 979                    0, NULL, 0, out_pga_event,
 980                    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
 981                    SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
 982 SND_SOC_DAPM_PGA_E("Line Output", SND_SOC_NOPM, WM8904_ANALOGUE_LINEOUT_0,
 983                    0, NULL, 0, out_pga_event,
 984                    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
 985                    SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
 986
 987 SND_SOC_DAPM_OUTPUT("HPOUTL"),
 988 SND_SOC_DAPM_OUTPUT("HPOUTR"),
 989 SND_SOC_DAPM_OUTPUT("LINEOUTL"),
 990 SND_SOC_DAPM_OUTPUT("LINEOUTR"),
 991 };
 992
 993 static const char *out_mux_text[] = {
 994         "DAC", "Bypass"
 995 };
 996
 997 static SOC_ENUM_SINGLE_DECL(hpl_enum, WM8904_ANALOGUE_OUT12_ZC, 3,
 998                             out_mux_text);
 999
1000 static const struct snd_kcontrol_new hpl_mux =
1001         SOC_DAPM_ENUM("HPL Mux", hpl_enum);
1002
1003 static SOC_ENUM_SINGLE_DECL(hpr_enum, WM8904_ANALOGUE_OUT12_ZC, 2,
1004                             out_mux_text);
1005
1006 static const struct snd_kcontrol_new hpr_mux =
1007         SOC_DAPM_ENUM("HPR Mux", hpr_enum);
1008
1009 static SOC_ENUM_SINGLE_DECL(linel_enum, WM8904_ANALOGUE_OUT12_ZC, 1,
1010                             out_mux_text);
1011
1012 static const struct snd_kcontrol_new linel_mux =
1013         SOC_DAPM_ENUM("LINEL Mux", linel_enum);
1014
1015 static SOC_ENUM_SINGLE_DECL(liner_enum, WM8904_ANALOGUE_OUT12_ZC, 0,
1016                             out_mux_text);
1017
1018 static const struct snd_kcontrol_new liner_mux =
1019         SOC_DAPM_ENUM("LINER Mux", liner_enum);
1020
1021 static const char *sidetone_text[] = {
1022         "None", "Left", "Right"
1023 };
1024
1025 static SOC_ENUM_SINGLE_DECL(dacl_sidetone_enum, WM8904_DAC_DIGITAL_0, 2,
1026                             sidetone_text);
1027
1028 static const struct snd_kcontrol_new dacl_sidetone_mux =
1029         SOC_DAPM_ENUM("Left Sidetone Mux", dacl_sidetone_enum);
1030
1031 static SOC_ENUM_SINGLE_DECL(dacr_sidetone_enum, WM8904_DAC_DIGITAL_0, 0,
1032                             sidetone_text);
1033
1034 static const struct snd_kcontrol_new dacr_sidetone_mux =
1035         SOC_DAPM_ENUM("Right Sidetone Mux", dacr_sidetone_enum);
1036
1037 static const struct snd_soc_dapm_widget wm8904_dapm_widgets[] = {
1038 SND_SOC_DAPM_SUPPLY("Class G", WM8904_CLASS_W_0, 0, 1, NULL, 0),
1039 SND_SOC_DAPM_PGA("Left Bypass", SND_SOC_NOPM, 0, 0, NULL, 0),
1040 SND_SOC_DAPM_PGA("Right Bypass", SND_SOC_NOPM, 0, 0, NULL, 0),
1041
1042 SND_SOC_DAPM_MUX("Left Sidetone", SND_SOC_NOPM, 0, 0, &dacl_sidetone_mux),
1043 SND_SOC_DAPM_MUX("Right Sidetone", SND_SOC_NOPM, 0, 0, &dacr_sidetone_mux),
1044
1045 SND_SOC_DAPM_MUX("HPL Mux", SND_SOC_NOPM, 0, 0, &hpl_mux),
1046 SND_SOC_DAPM_MUX("HPR Mux", SND_SOC_NOPM, 0, 0, &hpr_mux),
1047 SND_SOC_DAPM_MUX("LINEL Mux", SND_SOC_NOPM, 0, 0, &linel_mux),
1048 SND_SOC_DAPM_MUX("LINER Mux", SND_SOC_NOPM, 0, 0, &liner_mux),
1049 };
1050
1051 static const struct snd_soc_dapm_route core_intercon[] = {
1052         { "CLK_DSP", NULL, "SYSCLK" },
1053         { "TOCLK", NULL, "SYSCLK" },
1054 };
1055
1056 static const struct snd_soc_dapm_route adc_intercon[] = {
1057         { "Left Capture Mux", "IN1L", "IN1L" },
1058         { "Left Capture Mux", "IN2L", "IN2L" },
1059         { "Left Capture Mux", "IN3L", "IN3L" },
1060
1061         { "Left Capture Inverting Mux", "IN1L", "IN1L" },
1062         { "Left Capture Inverting Mux", "IN2L", "IN2L" },
1063         { "Left Capture Inverting Mux", "IN3L", "IN3L" },
1064
1065         { "Right Capture Mux", "IN1R", "IN1R" },
1066         { "Right Capture Mux", "IN2R", "IN2R" },
1067         { "Right Capture Mux", "IN3R", "IN3R" },
1068
1069         { "Right Capture Inverting Mux", "IN1R", "IN1R" },
1070         { "Right Capture Inverting Mux", "IN2R", "IN2R" },
1071         { "Right Capture Inverting Mux", "IN3R", "IN3R" },
1072
1073         { "Left Capture PGA", NULL, "Left Capture Mux" },
1074         { "Left Capture PGA", NULL, "Left Capture Inverting Mux" },
1075
1076         { "Right Capture PGA", NULL, "Right Capture Mux" },
1077         { "Right Capture PGA", NULL, "Right Capture Inverting Mux" },
1078
1079         { "AIFOUTL Mux", "Left", "ADCL" },
1080         { "AIFOUTL Mux", "Right", "ADCR" },
1081         { "AIFOUTR Mux", "Left", "ADCL" },
1082         { "AIFOUTR Mux", "Right", "ADCR" },
1083
1084         { "AIFOUTL", NULL, "AIFOUTL Mux" },
1085         { "AIFOUTR", NULL, "AIFOUTR Mux" },
1086
1087         { "ADCL", NULL, "CLK_DSP" },
1088         { "ADCL", NULL, "Left Capture PGA" },
1089
1090         { "ADCR", NULL, "CLK_DSP" },
1091         { "ADCR", NULL, "Right Capture PGA" },
1092 };
1093
1094 static const struct snd_soc_dapm_route dac_intercon[] = {
1095         { "DACL Mux", "Left", "AIFINL" },
1096         { "DACL Mux", "Right", "AIFINR" },
1097
1098         { "DACR Mux", "Left", "AIFINL" },
1099         { "DACR Mux", "Right", "AIFINR" },
1100
1101         { "DACL", NULL, "DACL Mux" },
1102         { "DACL", NULL, "CLK_DSP" },
1103
1104         { "DACR", NULL, "DACR Mux" },
1105         { "DACR", NULL, "CLK_DSP" },
1106
1107         { "Charge pump", NULL, "SYSCLK" },
1108
1109         { "Headphone Output", NULL, "HPL PGA" },
1110         { "Headphone Output", NULL, "HPR PGA" },
1111         { "Headphone Output", NULL, "Charge pump" },
1112         { "Headphone Output", NULL, "TOCLK" },
1113
1114         { "Line Output", NULL, "LINEL PGA" },
1115         { "Line Output", NULL, "LINER PGA" },
1116         { "Line Output", NULL, "Charge pump" },
1117         { "Line Output", NULL, "TOCLK" },
1118
1119         { "HPOUTL", NULL, "Headphone Output" },
1120         { "HPOUTR", NULL, "Headphone Output" },
1121
1122         { "LINEOUTL", NULL, "Line Output" },
1123         { "LINEOUTR", NULL, "Line Output" },
1124 };
1125
1126 static const struct snd_soc_dapm_route wm8904_intercon[] = {
1127         { "Left Sidetone", "Left", "ADCL" },
1128         { "Left Sidetone", "Right", "ADCR" },
1129         { "DACL", NULL, "Left Sidetone" },
1130
1131         { "Right Sidetone", "Left", "ADCL" },
1132         { "Right Sidetone", "Right", "ADCR" },
1133         { "DACR", NULL, "Right Sidetone" },
1134
1135         { "Left Bypass", NULL, "Class G" },
1136         { "Left Bypass", NULL, "Left Capture PGA" },
1137
1138         { "Right Bypass", NULL, "Class G" },
1139         { "Right Bypass", NULL, "Right Capture PGA" },
1140
1141         { "HPL Mux", "DAC", "DACL" },
1142         { "HPL Mux", "Bypass", "Left Bypass" },
1143
1144         { "HPR Mux", "DAC", "DACR" },
1145         { "HPR Mux", "Bypass", "Right Bypass" },
1146
1147         { "LINEL Mux", "DAC", "DACL" },
1148         { "LINEL Mux", "Bypass", "Left Bypass" },
1149
1150         { "LINER Mux", "DAC", "DACR" },
1151         { "LINER Mux", "Bypass", "Right Bypass" },
1152
1153         { "HPL PGA", NULL, "HPL Mux" },
1154         { "HPR PGA", NULL, "HPR Mux" },
1155
1156         { "LINEL PGA", NULL, "LINEL Mux" },
1157         { "LINER PGA", NULL, "LINER Mux" },
1158 };
1159
1160 static const struct snd_soc_dapm_route wm8912_intercon[] = {
1161         { "HPL PGA", NULL, "DACL" },
1162         { "HPR PGA", NULL, "DACR" },
1163
1164         { "LINEL PGA", NULL, "DACL" },
1165         { "LINER PGA", NULL, "DACR" },
1166 };
1167
1168 static int wm8904_add_widgets(struct snd_soc_component *component)
1169 {
1170         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
1171         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
1172
1173         snd_soc_dapm_new_controls(dapm, wm8904_core_dapm_widgets,
1174                                   ARRAY_SIZE(wm8904_core_dapm_widgets));
1175         snd_soc_dapm_add_routes(dapm, core_intercon,
1176                                 ARRAY_SIZE(core_intercon));
1177
1178         switch (wm8904->devtype) {
1179         case WM8904:
1180                 snd_soc_add_component_controls(component, wm8904_adc_snd_controls,
1181                                      ARRAY_SIZE(wm8904_adc_snd_controls));
1182                 snd_soc_add_component_controls(component, wm8904_dac_snd_controls,
1183                                      ARRAY_SIZE(wm8904_dac_snd_controls));
1184                 snd_soc_add_component_controls(component, wm8904_snd_controls,
1185                                      ARRAY_SIZE(wm8904_snd_controls));
1186
1187                 snd_soc_dapm_new_controls(dapm, wm8904_adc_dapm_widgets,
1188                                           ARRAY_SIZE(wm8904_adc_dapm_widgets));
1189                 snd_soc_dapm_new_controls(dapm, wm8904_dac_dapm_widgets,
1190                                           ARRAY_SIZE(wm8904_dac_dapm_widgets));
1191                 snd_soc_dapm_new_controls(dapm, wm8904_dapm_widgets,
1192                                           ARRAY_SIZE(wm8904_dapm_widgets));
1193
1194                 snd_soc_dapm_add_routes(dapm, adc_intercon,
1195                                         ARRAY_SIZE(adc_intercon));
1196                 snd_soc_dapm_add_routes(dapm, dac_intercon,
1197                                         ARRAY_SIZE(dac_intercon));
1198                 snd_soc_dapm_add_routes(dapm, wm8904_intercon,
1199                                         ARRAY_SIZE(wm8904_intercon));
1200                 break;
1201
1202         case WM8912:
1203                 snd_soc_add_component_controls(component, wm8904_dac_snd_controls,
1204                                      ARRAY_SIZE(wm8904_dac_snd_controls));
1205
1206                 snd_soc_dapm_new_controls(dapm, wm8904_dac_dapm_widgets,
1207                                           ARRAY_SIZE(wm8904_dac_dapm_widgets));
1208
1209                 snd_soc_dapm_add_routes(dapm, dac_intercon,
1210                                         ARRAY_SIZE(dac_intercon));
1211                 snd_soc_dapm_add_routes(dapm, wm8912_intercon,
1212                                         ARRAY_SIZE(wm8912_intercon));
1213                 break;
1214         }
1215
1216         return 0;
1217 }
1218
1219 static struct {
1220         int ratio;
1221         unsigned int clk_sys_rate;
1222 } clk_sys_rates[] = {
1223         {   64,  0 },
1224         {  128,  1 },
1225         {  192,  2 },
1226         {  256,  3 },
1227         {  384,  4 },
1228         {  512,  5 },
1229         {  786,  6 },
1230         { 1024,  7 },
1231         { 1408,  8 },
1232         { 1536,  9 },
1233 };
1234
1235 static struct {
1236         int rate;
1237         int sample_rate;
1238 } sample_rates[] = {
1239         { 8000,  0  },
1240         { 11025, 1  },
1241         { 12000, 1  },
1242         { 16000, 2  },
1243         { 22050, 3  },
1244         { 24000, 3  },
1245         { 32000, 4  },
1246         { 44100, 5  },
1247         { 48000, 5  },
1248 };
1249
1250 static struct {
1251         int div; /* *10 due to .5s */
1252         int bclk_div;
1253 } bclk_divs[] = {
1254         { 10,  0  },
1255         { 15,  1  },
1256         { 20,  2  },
1257         { 30,  3  },
1258         { 40,  4  },
1259         { 50,  5  },
1260         { 55,  6  },
1261         { 60,  7  },
1262         { 80,  8  },
1263         { 100, 9  },
1264         { 110, 10 },
1265         { 120, 11 },
1266         { 160, 12 },
1267         { 200, 13 },
1268         { 220, 14 },
1269         { 240, 16 },
1270         { 200, 17 },
1271         { 320, 18 },
1272         { 440, 19 },
1273         { 480, 20 },
1274 };
1275
1276
1277 static int wm8904_hw_params(struct snd_pcm_substream *substream,
1278                             struct snd_pcm_hw_params *params,
1279                             struct snd_soc_dai *dai)
1280 {
1281         struct snd_soc_component *component = dai->component;
1282         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
1283         int ret, i, best, best_val, cur_val;
1284         unsigned int aif1 = 0;
1285         unsigned int aif2 = 0;
1286         unsigned int aif3 = 0;
1287         unsigned int clock1 = 0;
1288         unsigned int dac_digital1 = 0;
1289
1290         /* What BCLK do we need? */
1291         wm8904->fs = params_rate(params);
1292         if (wm8904->tdm_slots) {
1293                 dev_dbg(component->dev, "Configuring for %d %d bit TDM slots\n",
1294                         wm8904->tdm_slots, wm8904->tdm_width);
1295                 wm8904->bclk = snd_soc_calc_bclk(wm8904->fs,
1296                                                  wm8904->tdm_width, 2,
1297                                                  wm8904->tdm_slots);
1298         } else {
1299                 wm8904->bclk = snd_soc_params_to_bclk(params);
1300         }
1301
1302         switch (params_width(params)) {
1303         case 16:
1304                 break;
1305         case 20:
1306                 aif1 |= 0x40;
1307                 break;
1308         case 24:
1309                 aif1 |= 0x80;
1310                 break;
1311         case 32:
1312                 aif1 |= 0xc0;
1313                 break;
1314         default:
1315                 return -EINVAL;
1316         }
1317
1318
1319         dev_dbg(component->dev, "Target BCLK is %dHz\n", wm8904->bclk);
1320
1321         ret = wm8904_configure_clocking(component);
1322         if (ret != 0)
1323                 return ret;
1324
1325         /* Select nearest CLK_SYS_RATE */
1326         best = 0;
1327         best_val = abs((wm8904->sysclk_rate / clk_sys_rates[0].ratio)
1328                        - wm8904->fs);
1329         for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) {
1330                 cur_val = abs((wm8904->sysclk_rate /
1331                                clk_sys_rates[i].ratio) - wm8904->fs);
1332                 if (cur_val < best_val) {
1333                         best = i;
1334                         best_val = cur_val;
1335                 }
1336         }
1337         dev_dbg(component->dev, "Selected CLK_SYS_RATIO of %d\n",
1338                 clk_sys_rates[best].ratio);
1339         clock1 |= (clk_sys_rates[best].clk_sys_rate
1340                    << WM8904_CLK_SYS_RATE_SHIFT);
1341
1342         /* SAMPLE_RATE */
1343         best = 0;
1344         best_val = abs(wm8904->fs - sample_rates[0].rate);
1345         for (i = 1; i < ARRAY_SIZE(sample_rates); i++) {
1346                 /* Closest match */
1347                 cur_val = abs(wm8904->fs - sample_rates[i].rate);
1348                 if (cur_val < best_val) {
1349                         best = i;
1350                         best_val = cur_val;
1351                 }
1352         }
1353         dev_dbg(component->dev, "Selected SAMPLE_RATE of %dHz\n",
1354                 sample_rates[best].rate);
1355         clock1 |= (sample_rates[best].sample_rate
1356                    << WM8904_SAMPLE_RATE_SHIFT);
1357
1358         /* Enable sloping stopband filter for low sample rates */
1359         if (wm8904->fs <= 24000)
1360                 dac_digital1 |= WM8904_DAC_SB_FILT;
1361
1362         /* BCLK_DIV */
1363         best = 0;
1364         best_val = INT_MAX;
1365         for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) {
1366                 cur_val = ((wm8904->sysclk_rate * 10) / bclk_divs[i].div)
1367                         - wm8904->bclk;
1368                 if (cur_val < 0) /* Table is sorted */
1369                         break;
1370                 if (cur_val < best_val) {
1371                         best = i;
1372                         best_val = cur_val;
1373                 }
1374         }
1375         wm8904->bclk = (wm8904->sysclk_rate * 10) / bclk_divs[best].div;
1376         dev_dbg(component->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n",
1377                 bclk_divs[best].div, wm8904->bclk);
1378         aif2 |= bclk_divs[best].bclk_div;
1379
1380         /* LRCLK is a simple fraction of BCLK */
1381         dev_dbg(component->dev, "LRCLK_RATE is %d\n", wm8904->bclk / wm8904->fs);
1382         aif3 |= wm8904->bclk / wm8904->fs;
1383
1384         /* Apply the settings */
1385         snd_soc_component_update_bits(component, WM8904_DAC_DIGITAL_1,
1386                             WM8904_DAC_SB_FILT, dac_digital1);
1387         snd_soc_component_update_bits(component, WM8904_AUDIO_INTERFACE_1,
1388                             WM8904_AIF_WL_MASK, aif1);
1389         snd_soc_component_update_bits(component, WM8904_AUDIO_INTERFACE_2,
1390                             WM8904_BCLK_DIV_MASK, aif2);
1391         snd_soc_component_update_bits(component, WM8904_AUDIO_INTERFACE_3,
1392                             WM8904_LRCLK_RATE_MASK, aif3);
1393         snd_soc_component_update_bits(component, WM8904_CLOCK_RATES_1,
1394                             WM8904_SAMPLE_RATE_MASK |
1395                             WM8904_CLK_SYS_RATE_MASK, clock1);
1396
1397         /* Update filters for the new settings */
1398         wm8904_set_retune_mobile(component);
1399         wm8904_set_deemph(component);
1400
1401         return 0;
1402 }
1403
1404
1405 static int wm8904_set_sysclk(struct snd_soc_dai *dai, int clk_id,
1406                              unsigned int freq, int dir)
1407 {
1408         struct snd_soc_component *component = dai->component;
1409         struct wm8904_priv *priv = snd_soc_component_get_drvdata(component);
1410
1411         switch (clk_id) {
1412         case WM8904_CLK_MCLK:
1413                 priv->sysclk_src = clk_id;
1414                 priv->mclk_rate = freq;
1415                 break;
1416
1417         case WM8904_CLK_FLL:
1418                 priv->sysclk_src = clk_id;
1419                 break;
1420
1421         default:
1422                 return -EINVAL;
1423         }
1424
1425         dev_dbg(dai->dev, "Clock source is %d at %uHz\n", clk_id, freq);
1426
1427         wm8904_configure_clocking(component);
1428
1429         return 0;
1430 }
1431
1432 static int wm8904_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
1433 {
1434         struct snd_soc_component *component = dai->component;
1435         unsigned int aif1 = 0;
1436         unsigned int aif3 = 0;
1437
1438         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1439         case SND_SOC_DAIFMT_CBS_CFS:
1440                 break;
1441         case SND_SOC_DAIFMT_CBS_CFM:
1442                 aif3 |= WM8904_LRCLK_DIR;
1443                 break;
1444         case SND_SOC_DAIFMT_CBM_CFS:
1445                 aif1 |= WM8904_BCLK_DIR;
1446                 break;
1447         case SND_SOC_DAIFMT_CBM_CFM:
1448                 aif1 |= WM8904_BCLK_DIR;
1449                 aif3 |= WM8904_LRCLK_DIR;
1450                 break;
1451         default:
1452                 return -EINVAL;
1453         }
1454
1455         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1456         case SND_SOC_DAIFMT_DSP_B:
1457                 aif1 |= 0x3 | WM8904_AIF_LRCLK_INV;
1458                 /* fall through */
1459         case SND_SOC_DAIFMT_DSP_A:
1460                 aif1 |= 0x3;
1461                 break;
1462         case SND_SOC_DAIFMT_I2S:
1463                 aif1 |= 0x2;
1464                 break;
1465         case SND_SOC_DAIFMT_RIGHT_J:
1466                 break;
1467         case SND_SOC_DAIFMT_LEFT_J:
1468                 aif1 |= 0x1;
1469                 break;
1470         default:
1471                 return -EINVAL;
1472         }
1473
1474         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1475         case SND_SOC_DAIFMT_DSP_A:
1476         case SND_SOC_DAIFMT_DSP_B:
1477                 /* frame inversion not valid for DSP modes */
1478                 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1479                 case SND_SOC_DAIFMT_NB_NF:
1480                         break;
1481                 case SND_SOC_DAIFMT_IB_NF:
1482                         aif1 |= WM8904_AIF_BCLK_INV;
1483                         break;
1484                 default:
1485                         return -EINVAL;
1486                 }
1487                 break;
1488
1489         case SND_SOC_DAIFMT_I2S:
1490         case SND_SOC_DAIFMT_RIGHT_J:
1491         case SND_SOC_DAIFMT_LEFT_J:
1492                 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1493                 case SND_SOC_DAIFMT_NB_NF:
1494                         break;
1495                 case SND_SOC_DAIFMT_IB_IF:
1496                         aif1 |= WM8904_AIF_BCLK_INV | WM8904_AIF_LRCLK_INV;
1497                         break;
1498                 case SND_SOC_DAIFMT_IB_NF:
1499                         aif1 |= WM8904_AIF_BCLK_INV;
1500                         break;
1501                 case SND_SOC_DAIFMT_NB_IF:
1502                         aif1 |= WM8904_AIF_LRCLK_INV;
1503                         break;
1504                 default:
1505                         return -EINVAL;
1506                 }
1507                 break;
1508         default:
1509                 return -EINVAL;
1510         }
1511
1512         snd_soc_component_update_bits(component, WM8904_AUDIO_INTERFACE_1,
1513                             WM8904_AIF_BCLK_INV | WM8904_AIF_LRCLK_INV |
1514                             WM8904_AIF_FMT_MASK | WM8904_BCLK_DIR, aif1);
1515         snd_soc_component_update_bits(component, WM8904_AUDIO_INTERFACE_3,
1516                             WM8904_LRCLK_DIR, aif3);
1517
1518         return 0;
1519 }
1520
1521
1522 static int wm8904_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
1523                                unsigned int rx_mask, int slots, int slot_width)
1524 {
1525         struct snd_soc_component *component = dai->component;
1526         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
1527         int aif1 = 0;
1528
1529         /* Don't need to validate anything if we're turning off TDM */
1530         if (slots == 0)
1531                 goto out;
1532
1533         /* Note that we allow configurations we can't handle ourselves -
1534          * for example, we can generate clocks for slots 2 and up even if
1535          * we can't use those slots ourselves.
1536          */
1537         aif1 |= WM8904_AIFADC_TDM | WM8904_AIFDAC_TDM;
1538
1539         switch (rx_mask) {
1540         case 3:
1541                 break;
1542         case 0xc:
1543                 aif1 |= WM8904_AIFADC_TDM_CHAN;
1544                 break;
1545         default:
1546                 return -EINVAL;
1547         }
1548
1549
1550         switch (tx_mask) {
1551         case 3:
1552                 break;
1553         case 0xc:
1554                 aif1 |= WM8904_AIFDAC_TDM_CHAN;
1555                 break;
1556         default:
1557                 return -EINVAL;
1558         }
1559
1560 out:
1561         wm8904->tdm_width = slot_width;
1562         wm8904->tdm_slots = slots / 2;
1563
1564         snd_soc_component_update_bits(component, WM8904_AUDIO_INTERFACE_1,
1565                             WM8904_AIFADC_TDM | WM8904_AIFADC_TDM_CHAN |
1566                             WM8904_AIFDAC_TDM | WM8904_AIFDAC_TDM_CHAN, aif1);
1567
1568         return 0;
1569 }
1570
1571 struct _fll_div {
1572         u16 fll_fratio;
1573         u16 fll_outdiv;
1574         u16 fll_clk_ref_div;
1575         u16 n;
1576         u16 k;
1577 };
1578
1579 /* The size in bits of the FLL divide multiplied by 10
1580  * to allow rounding later */
1581 #define FIXED_FLL_SIZE ((1 << 16) * 10)
1582
1583 static struct {
1584         unsigned int min;
1585         unsigned int max;
1586         u16 fll_fratio;
1587         int ratio;
1588 } fll_fratios[] = {
1589         {       0,    64000, 4, 16 },
1590         {   64000,   128000, 3,  8 },
1591         {  128000,   256000, 2,  4 },
1592         {  256000,  1000000, 1,  2 },
1593         { 1000000, 13500000, 0,  1 },
1594 };
1595
1596 static int fll_factors(struct _fll_div *fll_div, unsigned int Fref,
1597                        unsigned int Fout)
1598 {
1599         u64 Kpart;
1600         unsigned int K, Ndiv, Nmod, target;
1601         unsigned int div;
1602         int i;
1603
1604         /* Fref must be <=13.5MHz */
1605         div = 1;
1606         fll_div->fll_clk_ref_div = 0;
1607         while ((Fref / div) > 13500000) {
1608                 div *= 2;
1609                 fll_div->fll_clk_ref_div++;
1610
1611                 if (div > 8) {
1612                         pr_err("Can't scale %dMHz input down to <=13.5MHz\n",
1613                                Fref);
1614                         return -EINVAL;
1615                 }
1616         }
1617
1618         pr_debug("Fref=%u Fout=%u\n", Fref, Fout);
1619
1620         /* Apply the division for our remaining calculations */
1621         Fref /= div;
1622
1623         /* Fvco should be 90-100MHz; don't check the upper bound */
1624         div = 4;
1625         while (Fout * div < 90000000) {
1626                 div++;
1627                 if (div > 64) {
1628                         pr_err("Unable to find FLL_OUTDIV for Fout=%uHz\n",
1629                                Fout);
1630                         return -EINVAL;
1631                 }
1632         }
1633         target = Fout * div;
1634         fll_div->fll_outdiv = div - 1;
1635
1636         pr_debug("Fvco=%dHz\n", target);
1637
1638         /* Find an appropriate FLL_FRATIO and factor it out of the target */
1639         for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) {
1640                 if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) {
1641                         fll_div->fll_fratio = fll_fratios[i].fll_fratio;
1642                         target /= fll_fratios[i].ratio;
1643                         break;
1644                 }
1645         }
1646         if (i == ARRAY_SIZE(fll_fratios)) {
1647                 pr_err("Unable to find FLL_FRATIO for Fref=%uHz\n", Fref);
1648                 return -EINVAL;
1649         }
1650
1651         /* Now, calculate N.K */
1652         Ndiv = target / Fref;
1653
1654         fll_div->n = Ndiv;
1655         Nmod = target % Fref;
1656         pr_debug("Nmod=%d\n", Nmod);
1657
1658         /* Calculate fractional part - scale up so we can round. */
1659         Kpart = FIXED_FLL_SIZE * (long long)Nmod;
1660
1661         do_div(Kpart, Fref);
1662
1663         K = Kpart & 0xFFFFFFFF;
1664
1665         if ((K % 10) >= 5)
1666                 K += 5;
1667
1668         /* Move down to proper range now rounding is done */
1669         fll_div->k = K / 10;
1670
1671         pr_debug("N=%x K=%x FLL_FRATIO=%x FLL_OUTDIV=%x FLL_CLK_REF_DIV=%x\n",
1672                  fll_div->n, fll_div->k,
1673                  fll_div->fll_fratio, fll_div->fll_outdiv,
1674                  fll_div->fll_clk_ref_div);
1675
1676         return 0;
1677 }
1678
1679 static int wm8904_set_fll(struct snd_soc_dai *dai, int fll_id, int source,
1680                           unsigned int Fref, unsigned int Fout)
1681 {
1682         struct snd_soc_component *component = dai->component;
1683         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
1684         struct _fll_div fll_div;
1685         int ret, val;
1686         int clock2, fll1;
1687
1688         /* Any change? */
1689         if (source == wm8904->fll_src && Fref == wm8904->fll_fref &&
1690             Fout == wm8904->fll_fout)
1691                 return 0;
1692
1693         clock2 = snd_soc_component_read32(component, WM8904_CLOCK_RATES_2);
1694
1695         if (Fout == 0) {
1696                 dev_dbg(component->dev, "FLL disabled\n");
1697
1698                 wm8904->fll_fref = 0;
1699                 wm8904->fll_fout = 0;
1700
1701                 /* Gate SYSCLK to avoid glitches */
1702                 snd_soc_component_update_bits(component, WM8904_CLOCK_RATES_2,
1703                                     WM8904_CLK_SYS_ENA, 0);
1704
1705                 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_1,
1706                                     WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0);
1707
1708                 goto out;
1709         }
1710
1711         /* Validate the FLL ID */
1712         switch (source) {
1713         case WM8904_FLL_MCLK:
1714         case WM8904_FLL_LRCLK:
1715         case WM8904_FLL_BCLK:
1716                 ret = fll_factors(&fll_div, Fref, Fout);
1717                 if (ret != 0)
1718                         return ret;
1719                 break;
1720
1721         case WM8904_FLL_FREE_RUNNING:
1722                 dev_dbg(component->dev, "Using free running FLL\n");
1723                 /* Force 12MHz and output/4 for now */
1724                 Fout = 12000000;
1725                 Fref = 12000000;
1726
1727                 memset(&fll_div, 0, sizeof(fll_div));
1728                 fll_div.fll_outdiv = 3;
1729                 break;
1730
1731         default:
1732                 dev_err(component->dev, "Unknown FLL ID %d\n", fll_id);
1733                 return -EINVAL;
1734         }
1735
1736         /* Save current state then disable the FLL and SYSCLK to avoid
1737          * misclocking */
1738         fll1 = snd_soc_component_read32(component, WM8904_FLL_CONTROL_1);
1739         snd_soc_component_update_bits(component, WM8904_CLOCK_RATES_2,
1740                             WM8904_CLK_SYS_ENA, 0);
1741         snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_1,
1742                             WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0);
1743
1744         /* Unlock forced oscilator control to switch it on/off */
1745         snd_soc_component_update_bits(component, WM8904_CONTROL_INTERFACE_TEST_1,
1746                             WM8904_USER_KEY, WM8904_USER_KEY);
1747
1748         if (fll_id == WM8904_FLL_FREE_RUNNING) {
1749                 val = WM8904_FLL_FRC_NCO;
1750         } else {
1751                 val = 0;
1752         }
1753
1754         snd_soc_component_update_bits(component, WM8904_FLL_NCO_TEST_1, WM8904_FLL_FRC_NCO,
1755                             val);
1756         snd_soc_component_update_bits(component, WM8904_CONTROL_INTERFACE_TEST_1,
1757                             WM8904_USER_KEY, 0);
1758
1759         switch (fll_id) {
1760         case WM8904_FLL_MCLK:
1761                 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_5,
1762                                     WM8904_FLL_CLK_REF_SRC_MASK, 0);
1763                 break;
1764
1765         case WM8904_FLL_LRCLK:
1766                 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_5,
1767                                     WM8904_FLL_CLK_REF_SRC_MASK, 1);
1768                 break;
1769
1770         case WM8904_FLL_BCLK:
1771                 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_5,
1772                                     WM8904_FLL_CLK_REF_SRC_MASK, 2);
1773                 break;
1774         }
1775
1776         if (fll_div.k)
1777                 val = WM8904_FLL_FRACN_ENA;
1778         else
1779                 val = 0;
1780         snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_1,
1781                             WM8904_FLL_FRACN_ENA, val);
1782
1783         snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_2,
1784                             WM8904_FLL_OUTDIV_MASK | WM8904_FLL_FRATIO_MASK,
1785                             (fll_div.fll_outdiv << WM8904_FLL_OUTDIV_SHIFT) |
1786                             (fll_div.fll_fratio << WM8904_FLL_FRATIO_SHIFT));
1787
1788         snd_soc_component_write(component, WM8904_FLL_CONTROL_3, fll_div.k);
1789
1790         snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_4, WM8904_FLL_N_MASK,
1791                             fll_div.n << WM8904_FLL_N_SHIFT);
1792
1793         snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_5,
1794                             WM8904_FLL_CLK_REF_DIV_MASK,
1795                             fll_div.fll_clk_ref_div
1796                             << WM8904_FLL_CLK_REF_DIV_SHIFT);
1797
1798         dev_dbg(component->dev, "FLL configured for %dHz->%dHz\n", Fref, Fout);
1799
1800         wm8904->fll_fref = Fref;
1801         wm8904->fll_fout = Fout;
1802         wm8904->fll_src = source;
1803
1804         /* Enable the FLL if it was previously active */
1805         snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_1,
1806                             WM8904_FLL_OSC_ENA, fll1);
1807         snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_1,
1808                             WM8904_FLL_ENA, fll1);
1809
1810 out:
1811         /* Reenable SYSCLK if it was previously active */
1812         snd_soc_component_update_bits(component, WM8904_CLOCK_RATES_2,
1813                             WM8904_CLK_SYS_ENA, clock2);
1814
1815         return 0;
1816 }
1817
1818 static int wm8904_digital_mute(struct snd_soc_dai *codec_dai, int mute)
1819 {
1820         struct snd_soc_component *component = codec_dai->component;
1821         int val;
1822
1823         if (mute)
1824                 val = WM8904_DAC_MUTE;
1825         else
1826                 val = 0;
1827
1828         snd_soc_component_update_bits(component, WM8904_DAC_DIGITAL_1, WM8904_DAC_MUTE, val);
1829
1830         return 0;
1831 }
1832
1833 static int wm8904_set_bias_level(struct snd_soc_component *component,
1834                                  enum snd_soc_bias_level level)
1835 {
1836         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
1837         int ret;
1838
1839         switch (level) {
1840         case SND_SOC_BIAS_ON:
1841                 ret = clk_prepare_enable(wm8904->mclk);
1842                 if (ret)
1843                         return ret;
1844                 break;
1845
1846         case SND_SOC_BIAS_PREPARE:
1847                 /* VMID resistance 2*50k */
1848                 snd_soc_component_update_bits(component, WM8904_VMID_CONTROL_0,
1849                                     WM8904_VMID_RES_MASK,
1850                                     0x1 << WM8904_VMID_RES_SHIFT);
1851
1852                 /* Normal bias current */
1853                 snd_soc_component_update_bits(component, WM8904_BIAS_CONTROL_0,
1854                                     WM8904_ISEL_MASK, 2 << WM8904_ISEL_SHIFT);
1855                 break;
1856
1857         case SND_SOC_BIAS_STANDBY:
1858                 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
1859                         ret = regulator_bulk_enable(ARRAY_SIZE(wm8904->supplies),
1860                                                     wm8904->supplies);
1861                         if (ret != 0) {
1862                                 dev_err(component->dev,
1863                                         "Failed to enable supplies: %d\n",
1864                                         ret);
1865                                 return ret;
1866                         }
1867
1868                         regcache_cache_only(wm8904->regmap, false);
1869                         regcache_sync(wm8904->regmap);
1870
1871                         /* Enable bias */
1872                         snd_soc_component_update_bits(component, WM8904_BIAS_CONTROL_0,
1873                                             WM8904_BIAS_ENA, WM8904_BIAS_ENA);
1874
1875                         /* Enable VMID, VMID buffering, 2*5k resistance */
1876                         snd_soc_component_update_bits(component, WM8904_VMID_CONTROL_0,
1877                                             WM8904_VMID_ENA |
1878                                             WM8904_VMID_RES_MASK,
1879                                             WM8904_VMID_ENA |
1880                                             0x3 << WM8904_VMID_RES_SHIFT);
1881
1882                         /* Let VMID ramp */
1883                         msleep(1);
1884                 }
1885
1886                 /* Maintain VMID with 2*250k */
1887                 snd_soc_component_update_bits(component, WM8904_VMID_CONTROL_0,
1888                                     WM8904_VMID_RES_MASK,
1889                                     0x2 << WM8904_VMID_RES_SHIFT);
1890
1891                 /* Bias current *0.5 */
1892                 snd_soc_component_update_bits(component, WM8904_BIAS_CONTROL_0,
1893                                     WM8904_ISEL_MASK, 0);
1894                 break;
1895
1896         case SND_SOC_BIAS_OFF:
1897                 /* Turn off VMID */
1898                 snd_soc_component_update_bits(component, WM8904_VMID_CONTROL_0,
1899                                     WM8904_VMID_RES_MASK | WM8904_VMID_ENA, 0);
1900
1901                 /* Stop bias generation */
1902                 snd_soc_component_update_bits(component, WM8904_BIAS_CONTROL_0,
1903                                     WM8904_BIAS_ENA, 0);
1904
1905                 snd_soc_component_write(component, WM8904_SW_RESET_AND_ID, 0);
1906                 regcache_cache_only(wm8904->regmap, true);
1907                 regcache_mark_dirty(wm8904->regmap);
1908
1909                 regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies),
1910                                        wm8904->supplies);
1911                 clk_disable_unprepare(wm8904->mclk);
1912                 break;
1913         }
1914         return 0;
1915 }
1916
1917 #define WM8904_RATES SNDRV_PCM_RATE_8000_96000
1918
1919 #define WM8904_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
1920                         SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
1921
1922 static const struct snd_soc_dai_ops wm8904_dai_ops = {
1923         .set_sysclk = wm8904_set_sysclk,
1924         .set_fmt = wm8904_set_fmt,
1925         .set_tdm_slot = wm8904_set_tdm_slot,
1926         .set_pll = wm8904_set_fll,
1927         .hw_params = wm8904_hw_params,
1928         .digital_mute = wm8904_digital_mute,
1929 };
1930
1931 static struct snd_soc_dai_driver wm8904_dai = {
1932         .name = "wm8904-hifi",
1933         .playback = {
1934                 .stream_name = "Playback",
1935                 .channels_min = 2,
1936                 .channels_max = 2,
1937                 .rates = WM8904_RATES,
1938                 .formats = WM8904_FORMATS,
1939         },
1940         .capture = {
1941                 .stream_name = "Capture",
1942                 .channels_min = 2,
1943                 .channels_max = 2,
1944                 .rates = WM8904_RATES,
1945                 .formats = WM8904_FORMATS,
1946         },
1947         .ops = &wm8904_dai_ops,
1948         .symmetric_rates = 1,
1949 };
1950
1951 static void wm8904_handle_retune_mobile_pdata(struct snd_soc_component *component)
1952 {
1953         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
1954         struct wm8904_pdata *pdata = wm8904->pdata;
1955         struct snd_kcontrol_new control =
1956                 SOC_ENUM_EXT("EQ Mode",
1957                              wm8904->retune_mobile_enum,
1958                              wm8904_get_retune_mobile_enum,
1959                              wm8904_put_retune_mobile_enum);
1960         int ret, i, j;
1961         const char **t;
1962
1963         /* We need an array of texts for the enum API but the number
1964          * of texts is likely to be less than the number of
1965          * configurations due to the sample rate dependency of the
1966          * configurations. */
1967         wm8904->num_retune_mobile_texts = 0;
1968         wm8904->retune_mobile_texts = NULL;
1969         for (i = 0; i < pdata->num_retune_mobile_cfgs; i++) {
1970                 for (j = 0; j < wm8904->num_retune_mobile_texts; j++) {
1971                         if (strcmp(pdata->retune_mobile_cfgs[i].name,
1972                                    wm8904->retune_mobile_texts[j]) == 0)
1973                                 break;
1974                 }
1975
1976                 if (j != wm8904->num_retune_mobile_texts)
1977                         continue;
1978
1979                 /* Expand the array... */
1980                 t = krealloc(wm8904->retune_mobile_texts,
1981                              sizeof(char *) *
1982                              (wm8904->num_retune_mobile_texts + 1),
1983                              GFP_KERNEL);
1984                 if (t == NULL)
1985                         continue;
1986
1987                 /* ...store the new entry... */
1988                 t[wm8904->num_retune_mobile_texts] =
1989                         pdata->retune_mobile_cfgs[i].name;
1990
1991                 /* ...and remember the new version. */
1992                 wm8904->num_retune_mobile_texts++;
1993                 wm8904->retune_mobile_texts = t;
1994         }
1995
1996         dev_dbg(component->dev, "Allocated %d unique ReTune Mobile names\n",
1997                 wm8904->num_retune_mobile_texts);
1998
1999         wm8904->retune_mobile_enum.items = wm8904->num_retune_mobile_texts;
2000         wm8904->retune_mobile_enum.texts = wm8904->retune_mobile_texts;
2001
2002         ret = snd_soc_add_component_controls(component, &control, 1);
2003         if (ret != 0)
2004                 dev_err(component->dev,
2005                         "Failed to add ReTune Mobile control: %d\n", ret);
2006 }
2007
2008 static void wm8904_handle_pdata(struct snd_soc_component *component)
2009 {
2010         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
2011         struct wm8904_pdata *pdata = wm8904->pdata;
2012         int ret, i;
2013
2014         if (!pdata) {
2015                 snd_soc_add_component_controls(component, wm8904_eq_controls,
2016                                      ARRAY_SIZE(wm8904_eq_controls));
2017                 return;
2018         }
2019
2020         dev_dbg(component->dev, "%d DRC configurations\n", pdata->num_drc_cfgs);
2021
2022         if (pdata->num_drc_cfgs) {
2023                 struct snd_kcontrol_new control =
2024                         SOC_ENUM_EXT("DRC Mode", wm8904->drc_enum,
2025                                      wm8904_get_drc_enum, wm8904_put_drc_enum);
2026
2027                 /* We need an array of texts for the enum API */
2028                 wm8904->drc_texts = kmalloc_array(pdata->num_drc_cfgs,
2029                                                   sizeof(char *),
2030                                                   GFP_KERNEL);
2031                 if (!wm8904->drc_texts)
2032                         return;
2033
2034                 for (i = 0; i < pdata->num_drc_cfgs; i++)
2035                         wm8904->drc_texts[i] = pdata->drc_cfgs[i].name;
2036
2037                 wm8904->drc_enum.items = pdata->num_drc_cfgs;
2038                 wm8904->drc_enum.texts = wm8904->drc_texts;
2039
2040                 ret = snd_soc_add_component_controls(component, &control, 1);
2041                 if (ret != 0)
2042                         dev_err(component->dev,
2043                                 "Failed to add DRC mode control: %d\n", ret);
2044
2045                 wm8904_set_drc(component);
2046         }
2047
2048         dev_dbg(component->dev, "%d ReTune Mobile configurations\n",
2049                 pdata->num_retune_mobile_cfgs);
2050
2051         if (pdata->num_retune_mobile_cfgs)
2052                 wm8904_handle_retune_mobile_pdata(component);
2053         else
2054                 snd_soc_add_component_controls(component, wm8904_eq_controls,
2055                                      ARRAY_SIZE(wm8904_eq_controls));
2056 }
2057
2058
2059 static int wm8904_probe(struct snd_soc_component *component)
2060 {
2061         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
2062
2063         switch (wm8904->devtype) {
2064         case WM8904:
2065                 break;
2066         case WM8912:
2067                 memset(&wm8904_dai.capture, 0, sizeof(wm8904_dai.capture));
2068                 break;
2069         default:
2070                 dev_err(component->dev, "Unknown device type %d\n",
2071                         wm8904->devtype);
2072                 return -EINVAL;
2073         }
2074
2075         wm8904_handle_pdata(component);
2076
2077         wm8904_add_widgets(component);
2078
2079         return 0;
2080 }
2081
2082 static void wm8904_remove(struct snd_soc_component *component)
2083 {
2084         struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component);
2085
2086         kfree(wm8904->retune_mobile_texts);
2087         kfree(wm8904->drc_texts);
2088 }
2089
2090 static const struct snd_soc_component_driver soc_component_dev_wm8904 = {
2091         .probe                  = wm8904_probe,
2092         .remove                 = wm8904_remove,
2093         .set_bias_level         = wm8904_set_bias_level,
2094         .use_pmdown_time        = 1,
2095         .endianness             = 1,
2096         .non_legacy_dai_naming  = 1,
2097 };
2098
2099 static const struct regmap_config wm8904_regmap = {
2100         .reg_bits = 8,
2101         .val_bits = 16,
2102
2103         .max_register = WM8904_MAX_REGISTER,
2104         .volatile_reg = wm8904_volatile_register,
2105         .readable_reg = wm8904_readable_register,
2106
2107         .cache_type = REGCACHE_RBTREE,
2108         .reg_defaults = wm8904_reg_defaults,
2109         .num_reg_defaults = ARRAY_SIZE(wm8904_reg_defaults),
2110 };
2111
2112 #ifdef CONFIG_OF
2113 static enum wm8904_type wm8904_data = WM8904;
2114 static enum wm8904_type wm8912_data = WM8912;
2115
2116 static const struct of_device_id wm8904_of_match[] = {
2117         {
2118                 .compatible = "wlf,wm8904",
2119                 .data = &wm8904_data,
2120         }, {
2121                 .compatible = "wlf,wm8912",
2122                 .data = &wm8912_data,
2123         }, {
2124                 /* sentinel */
2125         }
2126 };
2127 MODULE_DEVICE_TABLE(of, wm8904_of_match);
2128 #endif
2129
2130 static int wm8904_i2c_probe(struct i2c_client *i2c,
2131                             const struct i2c_device_id *id)
2132 {
2133         struct wm8904_priv *wm8904;
2134         unsigned int val;
2135         int ret, i;
2136
2137         wm8904 = devm_kzalloc(&i2c->dev, sizeof(struct wm8904_priv),
2138                               GFP_KERNEL);
2139         if (wm8904 == NULL)
2140                 return -ENOMEM;
2141
2142         wm8904->mclk = devm_clk_get(&i2c->dev, "mclk");
2143         if (IS_ERR(wm8904->mclk)) {
2144                 ret = PTR_ERR(wm8904->mclk);
2145                 dev_err(&i2c->dev, "Failed to get MCLK\n");
2146                 return ret;
2147         }
2148
2149         wm8904->regmap = devm_regmap_init_i2c(i2c, &wm8904_regmap);
2150         if (IS_ERR(wm8904->regmap)) {
2151                 ret = PTR_ERR(wm8904->regmap);
2152                 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
2153                         ret);
2154                 return ret;
2155         }
2156
2157         if (i2c->dev.of_node) {
2158                 const struct of_device_id *match;
2159
2160                 match = of_match_node(wm8904_of_match, i2c->dev.of_node);
2161                 if (match == NULL)
2162                         return -EINVAL;
2163                 wm8904->devtype = *((enum wm8904_type *)match->data);
2164         } else {
2165                 wm8904->devtype = id->driver_data;
2166         }
2167
2168         i2c_set_clientdata(i2c, wm8904);
2169         wm8904->pdata = i2c->dev.platform_data;
2170
2171         for (i = 0; i < ARRAY_SIZE(wm8904->supplies); i++)
2172                 wm8904->supplies[i].supply = wm8904_supply_names[i];
2173
2174         ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8904->supplies),
2175                                       wm8904->supplies);
2176         if (ret != 0) {
2177                 dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
2178                 return ret;
2179         }
2180
2181         ret = regulator_bulk_enable(ARRAY_SIZE(wm8904->supplies),
2182                                     wm8904->supplies);
2183         if (ret != 0) {
2184                 dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
2185                 return ret;
2186         }
2187
2188         ret = regmap_read(wm8904->regmap, WM8904_SW_RESET_AND_ID, &val);
2189         if (ret < 0) {
2190                 dev_err(&i2c->dev, "Failed to read ID register: %d\n", ret);
2191                 goto err_enable;
2192         }
2193         if (val != 0x8904) {
2194                 dev_err(&i2c->dev, "Device is not a WM8904, ID is %x\n", val);
2195                 ret = -EINVAL;
2196                 goto err_enable;
2197         }
2198
2199         ret = regmap_read(wm8904->regmap, WM8904_REVISION, &val);
2200         if (ret < 0) {
2201                 dev_err(&i2c->dev, "Failed to read device revision: %d\n",
2202                         ret);
2203                 goto err_enable;
2204         }
2205         dev_info(&i2c->dev, "revision %c\n", val + 'A');
2206
2207         ret = regmap_write(wm8904->regmap, WM8904_SW_RESET_AND_ID, 0);
2208         if (ret < 0) {
2209                 dev_err(&i2c->dev, "Failed to issue reset: %d\n", ret);
2210                 goto err_enable;
2211         }
2212
2213         /* Change some default settings - latch VU and enable ZC */
2214         regmap_update_bits(wm8904->regmap, WM8904_ADC_DIGITAL_VOLUME_LEFT,
2215                            WM8904_ADC_VU, WM8904_ADC_VU);
2216         regmap_update_bits(wm8904->regmap, WM8904_ADC_DIGITAL_VOLUME_RIGHT,
2217                            WM8904_ADC_VU, WM8904_ADC_VU);
2218         regmap_update_bits(wm8904->regmap, WM8904_DAC_DIGITAL_VOLUME_LEFT,
2219                            WM8904_DAC_VU, WM8904_DAC_VU);
2220         regmap_update_bits(wm8904->regmap, WM8904_DAC_DIGITAL_VOLUME_RIGHT,
2221                            WM8904_DAC_VU, WM8904_DAC_VU);
2222         regmap_update_bits(wm8904->regmap, WM8904_ANALOGUE_OUT1_LEFT,
2223                            WM8904_HPOUT_VU | WM8904_HPOUTLZC,
2224                            WM8904_HPOUT_VU | WM8904_HPOUTLZC);
2225         regmap_update_bits(wm8904->regmap, WM8904_ANALOGUE_OUT1_RIGHT,
2226                            WM8904_HPOUT_VU | WM8904_HPOUTRZC,
2227                            WM8904_HPOUT_VU | WM8904_HPOUTRZC);
2228         regmap_update_bits(wm8904->regmap, WM8904_ANALOGUE_OUT2_LEFT,
2229                            WM8904_LINEOUT_VU | WM8904_LINEOUTLZC,
2230                            WM8904_LINEOUT_VU | WM8904_LINEOUTLZC);
2231         regmap_update_bits(wm8904->regmap, WM8904_ANALOGUE_OUT2_RIGHT,
2232                            WM8904_LINEOUT_VU | WM8904_LINEOUTRZC,
2233                            WM8904_LINEOUT_VU | WM8904_LINEOUTRZC);
2234         regmap_update_bits(wm8904->regmap, WM8904_CLOCK_RATES_0,
2235                            WM8904_SR_MODE, 0);
2236
2237         /* Apply configuration from the platform data. */
2238         if (wm8904->pdata) {
2239                 for (i = 0; i < WM8904_GPIO_REGS; i++) {
2240                         if (!wm8904->pdata->gpio_cfg[i])
2241                                 continue;
2242
2243                         regmap_update_bits(wm8904->regmap,
2244                                            WM8904_GPIO_CONTROL_1 + i,
2245                                            0xffff,
2246                                            wm8904->pdata->gpio_cfg[i]);
2247                 }
2248
2249                 /* Zero is the default value for these anyway */
2250                 for (i = 0; i < WM8904_MIC_REGS; i++)
2251                         regmap_update_bits(wm8904->regmap,
2252                                            WM8904_MIC_BIAS_CONTROL_0 + i,
2253                                            0xffff,
2254                                            wm8904->pdata->mic_cfg[i]);
2255         }
2256
2257         /* Set Class W by default - this will be managed by the Class
2258          * G widget at runtime where bypass paths are available.
2259          */
2260         regmap_update_bits(wm8904->regmap, WM8904_CLASS_W_0,
2261                             WM8904_CP_DYN_PWR, WM8904_CP_DYN_PWR);
2262
2263         /* Use normal bias source */
2264         regmap_update_bits(wm8904->regmap, WM8904_BIAS_CONTROL_0,
2265                             WM8904_POBCTRL, 0);
2266
2267         /* Can leave the device powered off until we need it */
2268         regcache_cache_only(wm8904->regmap, true);
2269         regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
2270
2271         ret = devm_snd_soc_register_component(&i2c->dev,
2272                         &soc_component_dev_wm8904, &wm8904_dai, 1);
2273         if (ret != 0)
2274                 return ret;
2275
2276         return 0;
2277
2278 err_enable:
2279         regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
2280         return ret;
2281 }
2282
2283 static const struct i2c_device_id wm8904_i2c_id[] = {
2284         { "wm8904", WM8904 },
2285         { "wm8912", WM8912 },
2286         { "wm8918", WM8904 },   /* Actually a subset, updates to follow */
2287         { }
2288 };
2289 MODULE_DEVICE_TABLE(i2c, wm8904_i2c_id);
2290
2291 static struct i2c_driver wm8904_i2c_driver = {
2292         .driver = {
2293                 .name = "wm8904",
2294                 .of_match_table = of_match_ptr(wm8904_of_match),
2295         },
2296         .probe =    wm8904_i2c_probe,
2297         .id_table = wm8904_i2c_id,
2298 };
2299
2300 module_i2c_driver(wm8904_i2c_driver);
2301
2302 MODULE_DESCRIPTION("ASoC WM8904 driver");
2303 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
2304 MODULE_LICENSE("GPL");