sound/soc/codecs/wm8974.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * wm8974.c  --  WM8974 ALSA Soc Audio driver
   4  *
   5  * Copyright 2006-2009 Wolfson Microelectronics PLC.
   6  *
   7  * Author: Liam Girdwood <Liam.Girdwood@wolfsonmicro.com>
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/delay.h>
  14 #include <linux/pm.h>
  15 #include <linux/i2c.h>
  16 #include <linux/regmap.h>
  17 #include <linux/slab.h>
  18 #include <sound/core.h>
  19 #include <sound/pcm.h>
  20 #include <sound/pcm_params.h>
  21 #include <sound/soc.h>
  22 #include <sound/initval.h>
  23 #include <sound/tlv.h>
  24
  25 #include "wm8974.h"
  26
  27 struct wm8974_priv {
  28         unsigned int mclk;
  29         unsigned int fs;
  30 };
  31
  32 static const struct reg_default wm8974_reg_defaults[] = {
  33         {  0, 0x0000 }, {  1, 0x0000 }, {  2, 0x0000 }, {  3, 0x0000 },
  34         {  4, 0x0050 }, {  5, 0x0000 }, {  6, 0x0140 }, {  7, 0x0000 },
  35         {  8, 0x0000 }, {  9, 0x0000 }, { 10, 0x0000 }, { 11, 0x00ff },
  36         { 12, 0x0000 }, { 13, 0x0000 }, { 14, 0x0100 }, { 15, 0x00ff },
  37         { 16, 0x0000 }, { 17, 0x0000 }, { 18, 0x012c }, { 19, 0x002c },
  38         { 20, 0x002c }, { 21, 0x002c }, { 22, 0x002c }, { 23, 0x0000 },
  39         { 24, 0x0032 }, { 25, 0x0000 }, { 26, 0x0000 }, { 27, 0x0000 },
  40         { 28, 0x0000 }, { 29, 0x0000 }, { 30, 0x0000 }, { 31, 0x0000 },
  41         { 32, 0x0038 }, { 33, 0x000b }, { 34, 0x0032 }, { 35, 0x0000 },
  42         { 36, 0x0008 }, { 37, 0x000c }, { 38, 0x0093 }, { 39, 0x00e9 },
  43         { 40, 0x0000 }, { 41, 0x0000 }, { 42, 0x0000 }, { 43, 0x0000 },
  44         { 44, 0x0003 }, { 45, 0x0010 }, { 46, 0x0000 }, { 47, 0x0000 },
  45         { 48, 0x0000 }, { 49, 0x0002 }, { 50, 0x0000 }, { 51, 0x0000 },
  46         { 52, 0x0000 }, { 53, 0x0000 }, { 54, 0x0039 }, { 55, 0x0000 },
  47         { 56, 0x0000 },
  48 };
  49
  50 #define WM8974_POWER1_BIASEN  0x08
  51 #define WM8974_POWER1_BUFIOEN 0x04
  52
  53 #define wm8974_reset(c) snd_soc_component_write(c, WM8974_RESET, 0)
  54
  55 static const char *wm8974_companding[] = {"Off", "NC", "u-law", "A-law" };
  56 static const char *wm8974_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz" };
  57 static const char *wm8974_eqmode[] = {"Capture", "Playback" };
  58 static const char *wm8974_bw[] = {"Narrow", "Wide" };
  59 static const char *wm8974_eq1[] = {"80Hz", "105Hz", "135Hz", "175Hz" };
  60 static const char *wm8974_eq2[] = {"230Hz", "300Hz", "385Hz", "500Hz" };
  61 static const char *wm8974_eq3[] = {"650Hz", "850Hz", "1.1kHz", "1.4kHz" };
  62 static const char *wm8974_eq4[] = {"1.8kHz", "2.4kHz", "3.2kHz", "4.1kHz" };
  63 static const char *wm8974_eq5[] = {"5.3kHz", "6.9kHz", "9kHz", "11.7kHz" };
  64 static const char *wm8974_alc[] = {"ALC", "Limiter" };
  65
  66 static const struct soc_enum wm8974_enum[] = {
  67         SOC_ENUM_SINGLE(WM8974_COMP, 1, 4, wm8974_companding), /* adc */
  68         SOC_ENUM_SINGLE(WM8974_COMP, 3, 4, wm8974_companding), /* dac */
  69         SOC_ENUM_SINGLE(WM8974_DAC,  4, 4, wm8974_deemp),
  70         SOC_ENUM_SINGLE(WM8974_EQ1,  8, 2, wm8974_eqmode),
  71
  72         SOC_ENUM_SINGLE(WM8974_EQ1,  5, 4, wm8974_eq1),
  73         SOC_ENUM_SINGLE(WM8974_EQ2,  8, 2, wm8974_bw),
  74         SOC_ENUM_SINGLE(WM8974_EQ2,  5, 4, wm8974_eq2),
  75         SOC_ENUM_SINGLE(WM8974_EQ3,  8, 2, wm8974_bw),
  76
  77         SOC_ENUM_SINGLE(WM8974_EQ3,  5, 4, wm8974_eq3),
  78         SOC_ENUM_SINGLE(WM8974_EQ4,  8, 2, wm8974_bw),
  79         SOC_ENUM_SINGLE(WM8974_EQ4,  5, 4, wm8974_eq4),
  80         SOC_ENUM_SINGLE(WM8974_EQ5,  8, 2, wm8974_bw),
  81
  82         SOC_ENUM_SINGLE(WM8974_EQ5,  5, 4, wm8974_eq5),
  83         SOC_ENUM_SINGLE(WM8974_ALC3,  8, 2, wm8974_alc),
  84 };
  85
  86 static const char *wm8974_auxmode_text[] = { "Buffer", "Mixer" };
  87
  88 static SOC_ENUM_SINGLE_DECL(wm8974_auxmode,
  89                             WM8974_INPUT,  3, wm8974_auxmode_text);
  90
  91 static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1);
  92 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
  93 static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1200, 75, 0);
  94 static const DECLARE_TLV_DB_SCALE(spk_tlv, -5700, 100, 0);
  95
  96 static const struct snd_kcontrol_new wm8974_snd_controls[] = {
  97
  98 SOC_SINGLE("Digital Loopback Switch", WM8974_COMP, 0, 1, 0),
  99
 100 SOC_ENUM("DAC Companding", wm8974_enum[1]),
 101 SOC_ENUM("ADC Companding", wm8974_enum[0]),
 102
 103 SOC_ENUM("Playback De-emphasis", wm8974_enum[2]),
 104 SOC_SINGLE("DAC Inversion Switch", WM8974_DAC, 0, 1, 0),
 105
 106 SOC_SINGLE_TLV("PCM Volume", WM8974_DACVOL, 0, 255, 0, digital_tlv),
 107
 108 SOC_SINGLE("High Pass Filter Switch", WM8974_ADC, 8, 1, 0),
 109 SOC_SINGLE("High Pass Cut Off", WM8974_ADC, 4, 7, 0),
 110 SOC_SINGLE("ADC Inversion Switch", WM8974_ADC, 0, 1, 0),
 111
 112 SOC_SINGLE_TLV("Capture Volume", WM8974_ADCVOL,  0, 255, 0, digital_tlv),
 113
 114 SOC_ENUM("Equaliser Function", wm8974_enum[3]),
 115 SOC_ENUM("EQ1 Cut Off", wm8974_enum[4]),
 116 SOC_SINGLE_TLV("EQ1 Volume", WM8974_EQ1,  0, 24, 1, eq_tlv),
 117
 118 SOC_ENUM("Equaliser EQ2 Bandwidth", wm8974_enum[5]),
 119 SOC_ENUM("EQ2 Cut Off", wm8974_enum[6]),
 120 SOC_SINGLE_TLV("EQ2 Volume", WM8974_EQ2,  0, 24, 1, eq_tlv),
 121
 122 SOC_ENUM("Equaliser EQ3 Bandwidth", wm8974_enum[7]),
 123 SOC_ENUM("EQ3 Cut Off", wm8974_enum[8]),
 124 SOC_SINGLE_TLV("EQ3 Volume", WM8974_EQ3,  0, 24, 1, eq_tlv),
 125
 126 SOC_ENUM("Equaliser EQ4 Bandwidth", wm8974_enum[9]),
 127 SOC_ENUM("EQ4 Cut Off", wm8974_enum[10]),
 128 SOC_SINGLE_TLV("EQ4 Volume", WM8974_EQ4,  0, 24, 1, eq_tlv),
 129
 130 SOC_ENUM("Equaliser EQ5 Bandwidth", wm8974_enum[11]),
 131 SOC_ENUM("EQ5 Cut Off", wm8974_enum[12]),
 132 SOC_SINGLE_TLV("EQ5 Volume", WM8974_EQ5,  0, 24, 1, eq_tlv),
 133
 134 SOC_SINGLE("DAC Playback Limiter Switch", WM8974_DACLIM1,  8, 1, 0),
 135 SOC_SINGLE("DAC Playback Limiter Decay", WM8974_DACLIM1,  4, 15, 0),
 136 SOC_SINGLE("DAC Playback Limiter Attack", WM8974_DACLIM1,  0, 15, 0),
 137
 138 SOC_SINGLE("DAC Playback Limiter Threshold", WM8974_DACLIM2,  4, 7, 0),
 139 SOC_SINGLE("DAC Playback Limiter Boost", WM8974_DACLIM2,  0, 15, 0),
 140
 141 SOC_SINGLE("ALC Enable Switch", WM8974_ALC1,  8, 1, 0),
 142 SOC_SINGLE("ALC Capture Max Gain", WM8974_ALC1,  3, 7, 0),
 143 SOC_SINGLE("ALC Capture Min Gain", WM8974_ALC1,  0, 7, 0),
 144
 145 SOC_SINGLE("ALC Capture ZC Switch", WM8974_ALC2,  8, 1, 0),
 146 SOC_SINGLE("ALC Capture Hold", WM8974_ALC2,  4, 7, 0),
 147 SOC_SINGLE("ALC Capture Target", WM8974_ALC2,  0, 15, 0),
 148
 149 SOC_ENUM("ALC Capture Mode", wm8974_enum[13]),
 150 SOC_SINGLE("ALC Capture Decay", WM8974_ALC3,  4, 15, 0),
 151 SOC_SINGLE("ALC Capture Attack", WM8974_ALC3,  0, 15, 0),
 152
 153 SOC_SINGLE("ALC Capture Noise Gate Switch", WM8974_NGATE,  3, 1, 0),
 154 SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8974_NGATE,  0, 7, 0),
 155
 156 SOC_SINGLE("Capture PGA ZC Switch", WM8974_INPPGA,  7, 1, 0),
 157 SOC_SINGLE_TLV("Capture PGA Volume", WM8974_INPPGA,  0, 63, 0, inpga_tlv),
 158
 159 SOC_SINGLE("Speaker Playback ZC Switch", WM8974_SPKVOL,  7, 1, 0),
 160 SOC_SINGLE("Speaker Playback Switch", WM8974_SPKVOL,  6, 1, 1),
 161 SOC_SINGLE_TLV("Speaker Playback Volume", WM8974_SPKVOL,  0, 63, 0, spk_tlv),
 162
 163 SOC_ENUM("Aux Mode", wm8974_auxmode),
 164
 165 SOC_SINGLE("Capture Boost(+20dB)", WM8974_ADCBOOST,  8, 1, 0),
 166 SOC_SINGLE("Mono Playback Switch", WM8974_MONOMIX, 6, 1, 1),
 167
 168 /* DAC / ADC oversampling */
 169 SOC_SINGLE("DAC 128x Oversampling Switch", WM8974_DAC, 8, 1, 0),
 170 SOC_SINGLE("ADC 128x Oversampling Switch", WM8974_ADC, 8, 1, 0),
 171 };
 172
 173 /* Speaker Output Mixer */
 174 static const struct snd_kcontrol_new wm8974_speaker_mixer_controls[] = {
 175 SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_SPKMIX, 1, 1, 0),
 176 SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_SPKMIX, 5, 1, 0),
 177 SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_SPKMIX, 0, 1, 0),
 178 };
 179
 180 /* Mono Output Mixer */
 181 static const struct snd_kcontrol_new wm8974_mono_mixer_controls[] = {
 182 SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_MONOMIX, 1, 1, 0),
 183 SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_MONOMIX, 2, 1, 0),
 184 SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_MONOMIX, 0, 1, 0),
 185 };
 186
 187 /* Boost mixer */
 188 static const struct snd_kcontrol_new wm8974_boost_mixer[] = {
 189 SOC_DAPM_SINGLE("Aux Switch", WM8974_INPPGA, 6, 1, 0),
 190 };
 191
 192 /* Input PGA */
 193 static const struct snd_kcontrol_new wm8974_inpga[] = {
 194 SOC_DAPM_SINGLE("Aux Switch", WM8974_INPUT, 2, 1, 0),
 195 SOC_DAPM_SINGLE("MicN Switch", WM8974_INPUT, 1, 1, 0),
 196 SOC_DAPM_SINGLE("MicP Switch", WM8974_INPUT, 0, 1, 0),
 197 };
 198
 199 /* AUX Input boost vol */
 200 static const struct snd_kcontrol_new wm8974_aux_boost_controls =
 201 SOC_DAPM_SINGLE("Aux Volume", WM8974_ADCBOOST, 0, 7, 0);
 202
 203 /* Mic Input boost vol */
 204 static const struct snd_kcontrol_new wm8974_mic_boost_controls =
 205 SOC_DAPM_SINGLE("Mic Volume", WM8974_ADCBOOST, 4, 7, 0);
 206
 207 static const struct snd_soc_dapm_widget wm8974_dapm_widgets[] = {
 208 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8974_POWER3, 2, 0,
 209         &wm8974_speaker_mixer_controls[0],
 210         ARRAY_SIZE(wm8974_speaker_mixer_controls)),
 211 SND_SOC_DAPM_MIXER("Mono Mixer", WM8974_POWER3, 3, 0,
 212         &wm8974_mono_mixer_controls[0],
 213         ARRAY_SIZE(wm8974_mono_mixer_controls)),
 214 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8974_POWER3, 0, 0),
 215 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8974_POWER2, 0, 0),
 216 SND_SOC_DAPM_PGA("Aux Input", WM8974_POWER1, 6, 0, NULL, 0),
 217 SND_SOC_DAPM_PGA("SpkN Out", WM8974_POWER3, 5, 0, NULL, 0),
 218 SND_SOC_DAPM_PGA("SpkP Out", WM8974_POWER3, 6, 0, NULL, 0),
 219 SND_SOC_DAPM_PGA("Mono Out", WM8974_POWER3, 7, 0, NULL, 0),
 220
 221 SND_SOC_DAPM_MIXER("Input PGA", WM8974_POWER2, 2, 0, wm8974_inpga,
 222                    ARRAY_SIZE(wm8974_inpga)),
 223 SND_SOC_DAPM_MIXER("Boost Mixer", WM8974_POWER2, 4, 0,
 224                    wm8974_boost_mixer, ARRAY_SIZE(wm8974_boost_mixer)),
 225
 226 SND_SOC_DAPM_SUPPLY("Mic Bias", WM8974_POWER1, 4, 0, NULL, 0),
 227
 228 SND_SOC_DAPM_INPUT("MICN"),
 229 SND_SOC_DAPM_INPUT("MICP"),
 230 SND_SOC_DAPM_INPUT("AUX"),
 231 SND_SOC_DAPM_OUTPUT("MONOOUT"),
 232 SND_SOC_DAPM_OUTPUT("SPKOUTP"),
 233 SND_SOC_DAPM_OUTPUT("SPKOUTN"),
 234 };
 235
 236 static const struct snd_soc_dapm_route wm8974_dapm_routes[] = {
 237         /* Mono output mixer */
 238         {"Mono Mixer", "PCM Playback Switch", "DAC"},
 239         {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
 240         {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
 241
 242         /* Speaker output mixer */
 243         {"Speaker Mixer", "PCM Playback Switch", "DAC"},
 244         {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
 245         {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
 246
 247         /* Outputs */
 248         {"Mono Out", NULL, "Mono Mixer"},
 249         {"MONOOUT", NULL, "Mono Out"},
 250         {"SpkN Out", NULL, "Speaker Mixer"},
 251         {"SpkP Out", NULL, "Speaker Mixer"},
 252         {"SPKOUTN", NULL, "SpkN Out"},
 253         {"SPKOUTP", NULL, "SpkP Out"},
 254
 255         /* Boost Mixer */
 256         {"ADC", NULL, "Boost Mixer"},
 257         {"Boost Mixer", "Aux Switch", "Aux Input"},
 258         {"Boost Mixer", NULL, "Input PGA"},
 259         {"Boost Mixer", NULL, "MICP"},
 260
 261         /* Input PGA */
 262         {"Input PGA", "Aux Switch", "Aux Input"},
 263         {"Input PGA", "MicN Switch", "MICN"},
 264         {"Input PGA", "MicP Switch", "MICP"},
 265
 266         /* Inputs */
 267         {"Aux Input", NULL, "AUX"},
 268 };
 269
 270 struct pll_ {
 271         unsigned int pre_div:1;
 272         unsigned int n:4;
 273         unsigned int k;
 274 };
 275
 276 /* The size in bits of the pll divide multiplied by 10
 277  * to allow rounding later */
 278 #define FIXED_PLL_SIZE ((1 << 24) * 10)
 279
 280 static void pll_factors(struct pll_ *pll_div,
 281                         unsigned int target, unsigned int source)
 282 {
 283         unsigned long long Kpart;
 284         unsigned int K, Ndiv, Nmod;
 285
 286         /* There is a fixed divide by 4 in the output path */
 287         target *= 4;
 288
 289         Ndiv = target / source;
 290         if (Ndiv < 6) {
 291                 source /= 2;
 292                 pll_div->pre_div = 1;
 293                 Ndiv = target / source;
 294         } else
 295                 pll_div->pre_div = 0;
 296
 297         if ((Ndiv < 6) || (Ndiv > 12))
 298                 printk(KERN_WARNING
 299                         "WM8974 N value %u outwith recommended range!\n",
 300                         Ndiv);
 301
 302         pll_div->n = Ndiv;
 303         Nmod = target % source;
 304         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 305
 306         do_div(Kpart, source);
 307
 308         K = Kpart & 0xFFFFFFFF;
 309
 310         /* Check if we need to round */
 311         if ((K % 10) >= 5)
 312                 K += 5;
 313
 314         /* Move down to proper range now rounding is done */
 315         K /= 10;
 316
 317         pll_div->k = K;
 318 }
 319
 320 static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
 321                 int source, unsigned int freq_in, unsigned int freq_out)
 322 {
 323         struct snd_soc_component *component = codec_dai->component;
 324         struct pll_ pll_div;
 325         u16 reg;
 326
 327         if (freq_in == 0 || freq_out == 0) {
 328                 /* Clock CODEC directly from MCLK */
 329                 reg = snd_soc_component_read32(component, WM8974_CLOCK);
 330                 snd_soc_component_write(component, WM8974_CLOCK, reg & 0x0ff);
 331
 332                 /* Turn off PLL */
 333                 reg = snd_soc_component_read32(component, WM8974_POWER1);
 334                 snd_soc_component_write(component, WM8974_POWER1, reg & 0x1df);
 335                 return 0;
 336         }
 337
 338         pll_factors(&pll_div, freq_out, freq_in);
 339
 340         snd_soc_component_write(component, WM8974_PLLN, (pll_div.pre_div << 4) | pll_div.n);
 341         snd_soc_component_write(component, WM8974_PLLK1, pll_div.k >> 18);
 342         snd_soc_component_write(component, WM8974_PLLK2, (pll_div.k >> 9) & 0x1ff);
 343         snd_soc_component_write(component, WM8974_PLLK3, pll_div.k & 0x1ff);
 344         reg = snd_soc_component_read32(component, WM8974_POWER1);
 345         snd_soc_component_write(component, WM8974_POWER1, reg | 0x020);
 346
 347         /* Run CODEC from PLL instead of MCLK */
 348         reg = snd_soc_component_read32(component, WM8974_CLOCK);
 349         snd_soc_component_write(component, WM8974_CLOCK, reg | 0x100);
 350
 351         return 0;
 352 }
 353
 354 /*
 355  * Configure WM8974 clock dividers.
 356  */
 357 static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 358                 int div_id, int div)
 359 {
 360         struct snd_soc_component *component = codec_dai->component;
 361         u16 reg;
 362
 363         switch (div_id) {
 364         case WM8974_OPCLKDIV:
 365                 reg = snd_soc_component_read32(component, WM8974_GPIO) & 0x1cf;
 366                 snd_soc_component_write(component, WM8974_GPIO, reg | div);
 367                 break;
 368         case WM8974_MCLKDIV:
 369                 reg = snd_soc_component_read32(component, WM8974_CLOCK) & 0x11f;
 370                 snd_soc_component_write(component, WM8974_CLOCK, reg | div);
 371                 break;
 372         case WM8974_BCLKDIV:
 373                 reg = snd_soc_component_read32(component, WM8974_CLOCK) & 0x1e3;
 374                 snd_soc_component_write(component, WM8974_CLOCK, reg | div);
 375                 break;
 376         default:
 377                 return -EINVAL;
 378         }
 379
 380         return 0;
 381 }
 382
 383 static unsigned int wm8974_get_mclkdiv(unsigned int f_in, unsigned int f_out,
 384                                        int *mclkdiv)
 385 {
 386         unsigned int ratio = 2 * f_in / f_out;
 387
 388         if (ratio <= 2) {
 389                 *mclkdiv = WM8974_MCLKDIV_1;
 390                 ratio = 2;
 391         } else if (ratio == 3) {
 392                 *mclkdiv = WM8974_MCLKDIV_1_5;
 393         } else if (ratio == 4) {
 394                 *mclkdiv = WM8974_MCLKDIV_2;
 395         } else if (ratio <= 6) {
 396                 *mclkdiv = WM8974_MCLKDIV_3;
 397                 ratio = 6;
 398         } else if (ratio <= 8) {
 399                 *mclkdiv = WM8974_MCLKDIV_4;
 400                 ratio = 8;
 401         } else if (ratio <= 12) {
 402                 *mclkdiv = WM8974_MCLKDIV_6;
 403                 ratio = 12;
 404         } else if (ratio <= 16) {
 405                 *mclkdiv = WM8974_MCLKDIV_8;
 406                 ratio = 16;
 407         } else {
 408                 *mclkdiv = WM8974_MCLKDIV_12;
 409                 ratio = 24;
 410         }
 411
 412         return f_out * ratio / 2;
 413 }
 414
 415 static int wm8974_update_clocks(struct snd_soc_dai *dai)
 416 {
 417         struct snd_soc_component *component = dai->component;
 418         struct wm8974_priv *priv = snd_soc_component_get_drvdata(component);
 419         unsigned int fs256;
 420         unsigned int fpll = 0;
 421         unsigned int f;
 422         int mclkdiv;
 423
 424         if (!priv->mclk || !priv->fs)
 425                 return 0;
 426
 427         fs256 = 256 * priv->fs;
 428
 429         f = wm8974_get_mclkdiv(priv->mclk, fs256, &mclkdiv);
 430
 431         if (f != priv->mclk) {
 432                 /* The PLL performs best around 90MHz */
 433                 fpll = wm8974_get_mclkdiv(22500000, fs256, &mclkdiv);
 434         }
 435
 436         wm8974_set_dai_pll(dai, 0, 0, priv->mclk, fpll);
 437         wm8974_set_dai_clkdiv(dai, WM8974_MCLKDIV, mclkdiv);
 438
 439         return 0;
 440 }
 441
 442 static int wm8974_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
 443                                  unsigned int freq, int dir)
 444 {
 445         struct snd_soc_component *component = dai->component;
 446         struct wm8974_priv *priv = snd_soc_component_get_drvdata(component);
 447
 448         if (dir != SND_SOC_CLOCK_IN)
 449                 return -EINVAL;
 450
 451         priv->mclk = freq;
 452
 453         return wm8974_update_clocks(dai);
 454 }
 455
 456 static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai,
 457                 unsigned int fmt)
 458 {
 459         struct snd_soc_component *component = codec_dai->component;
 460         u16 iface = 0;
 461         u16 clk = snd_soc_component_read32(component, WM8974_CLOCK) & 0x1fe;
 462
 463         /* set master/slave audio interface */
 464         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 465         case SND_SOC_DAIFMT_CBM_CFM:
 466                 clk |= 0x0001;
 467                 break;
 468         case SND_SOC_DAIFMT_CBS_CFS:
 469                 break;
 470         default:
 471                 return -EINVAL;
 472         }
 473
 474         /* interface format */
 475         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 476         case SND_SOC_DAIFMT_I2S:
 477                 iface |= 0x0010;
 478                 break;
 479         case SND_SOC_DAIFMT_RIGHT_J:
 480                 break;
 481         case SND_SOC_DAIFMT_LEFT_J:
 482                 iface |= 0x0008;
 483                 break;
 484         case SND_SOC_DAIFMT_DSP_A:
 485                 iface |= 0x00018;
 486                 break;
 487         default:
 488                 return -EINVAL;
 489         }
 490
 491         /* clock inversion */
 492         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 493         case SND_SOC_DAIFMT_NB_NF:
 494                 break;
 495         case SND_SOC_DAIFMT_IB_IF:
 496                 iface |= 0x0180;
 497                 break;
 498         case SND_SOC_DAIFMT_IB_NF:
 499                 iface |= 0x0100;
 500                 break;
 501         case SND_SOC_DAIFMT_NB_IF:
 502                 iface |= 0x0080;
 503                 break;
 504         default:
 505                 return -EINVAL;
 506         }
 507
 508         snd_soc_component_write(component, WM8974_IFACE, iface);
 509         snd_soc_component_write(component, WM8974_CLOCK, clk);
 510         return 0;
 511 }
 512
 513 static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream,
 514                                 struct snd_pcm_hw_params *params,
 515                                 struct snd_soc_dai *dai)
 516 {
 517         struct snd_soc_component *component = dai->component;
 518         struct wm8974_priv *priv = snd_soc_component_get_drvdata(component);
 519         u16 iface = snd_soc_component_read32(component, WM8974_IFACE) & 0x19f;
 520         u16 adn = snd_soc_component_read32(component, WM8974_ADD) & 0x1f1;
 521         int err;
 522
 523         priv->fs = params_rate(params);
 524         err = wm8974_update_clocks(dai);
 525         if (err)
 526                 return err;
 527
 528         /* bit size */
 529         switch (params_width(params)) {
 530         case 16:
 531                 break;
 532         case 20:
 533                 iface |= 0x0020;
 534                 break;
 535         case 24:
 536                 iface |= 0x0040;
 537                 break;
 538         case 32:
 539                 iface |= 0x0060;
 540                 break;
 541         }
 542
 543         /* filter coefficient */
 544         switch (params_rate(params)) {
 545         case 8000:
 546                 adn |= 0x5 << 1;
 547                 break;
 548         case 11025:
 549                 adn |= 0x4 << 1;
 550                 break;
 551         case 16000:
 552                 adn |= 0x3 << 1;
 553                 break;
 554         case 22050:
 555                 adn |= 0x2 << 1;
 556                 break;
 557         case 32000:
 558                 adn |= 0x1 << 1;
 559                 break;
 560         case 44100:
 561         case 48000:
 562                 break;
 563         }
 564
 565         snd_soc_component_write(component, WM8974_IFACE, iface);
 566         snd_soc_component_write(component, WM8974_ADD, adn);
 567         return 0;
 568 }
 569
 570 static int wm8974_mute(struct snd_soc_dai *dai, int mute)
 571 {
 572         struct snd_soc_component *component = dai->component;
 573         u16 mute_reg = snd_soc_component_read32(component, WM8974_DAC) & 0xffbf;
 574
 575         if (mute)
 576                 snd_soc_component_write(component, WM8974_DAC, mute_reg | 0x40);
 577         else
 578                 snd_soc_component_write(component, WM8974_DAC, mute_reg);
 579         return 0;
 580 }
 581
 582 /* liam need to make this lower power with dapm */
 583 static int wm8974_set_bias_level(struct snd_soc_component *component,
 584         enum snd_soc_bias_level level)
 585 {
 586         u16 power1 = snd_soc_component_read32(component, WM8974_POWER1) & ~0x3;
 587
 588         switch (level) {
 589         case SND_SOC_BIAS_ON:
 590         case SND_SOC_BIAS_PREPARE:
 591                 power1 |= 0x1;  /* VMID 50k */
 592                 snd_soc_component_write(component, WM8974_POWER1, power1);
 593                 break;
 594
 595         case SND_SOC_BIAS_STANDBY:
 596                 power1 |= WM8974_POWER1_BIASEN | WM8974_POWER1_BUFIOEN;
 597
 598                 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
 599                         regcache_sync(dev_get_regmap(component->dev, NULL));
 600
 601                         /* Initial cap charge at VMID 5k */
 602                         snd_soc_component_write(component, WM8974_POWER1, power1 | 0x3);
 603                         mdelay(100);
 604                 }
 605
 606                 power1 |= 0x2;  /* VMID 500k */
 607                 snd_soc_component_write(component, WM8974_POWER1, power1);
 608                 break;
 609
 610         case SND_SOC_BIAS_OFF:
 611                 snd_soc_component_write(component, WM8974_POWER1, 0);
 612                 snd_soc_component_write(component, WM8974_POWER2, 0);
 613                 snd_soc_component_write(component, WM8974_POWER3, 0);
 614                 break;
 615         }
 616
 617         return 0;
 618 }
 619
 620 #define WM8974_RATES (SNDRV_PCM_RATE_8000_48000)
 621
 622 #define WM8974_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 623         SNDRV_PCM_FMTBIT_S24_LE)
 624
 625 static const struct snd_soc_dai_ops wm8974_ops = {
 626         .hw_params = wm8974_pcm_hw_params,
 627         .digital_mute = wm8974_mute,
 628         .set_fmt = wm8974_set_dai_fmt,
 629         .set_clkdiv = wm8974_set_dai_clkdiv,
 630         .set_pll = wm8974_set_dai_pll,
 631         .set_sysclk = wm8974_set_dai_sysclk,
 632 };
 633
 634 static struct snd_soc_dai_driver wm8974_dai = {
 635         .name = "wm8974-hifi",
 636         .playback = {
 637                 .stream_name = "Playback",
 638                 .channels_min = 1,
 639                 .channels_max = 2,   /* Only 1 channel of data */
 640                 .rates = WM8974_RATES,
 641                 .formats = WM8974_FORMATS,},
 642         .capture = {
 643                 .stream_name = "Capture",
 644                 .channels_min = 1,
 645                 .channels_max = 2,   /* Only 1 channel of data */
 646                 .rates = WM8974_RATES,
 647                 .formats = WM8974_FORMATS,},
 648         .ops = &wm8974_ops,
 649         .symmetric_rates = 1,
 650 };
 651
 652 static const struct regmap_config wm8974_regmap = {
 653         .reg_bits = 7,
 654         .val_bits = 9,
 655
 656         .max_register = WM8974_MONOMIX,
 657         .reg_defaults = wm8974_reg_defaults,
 658         .num_reg_defaults = ARRAY_SIZE(wm8974_reg_defaults),
 659         .cache_type = REGCACHE_FLAT,
 660 };
 661
 662 static int wm8974_probe(struct snd_soc_component *component)
 663 {
 664         int ret = 0;
 665
 666         ret = wm8974_reset(component);
 667         if (ret < 0) {
 668                 dev_err(component->dev, "Failed to issue reset\n");
 669                 return ret;
 670         }
 671
 672         return 0;
 673 }
 674
 675 static const struct snd_soc_component_driver soc_component_dev_wm8974 = {
 676         .probe                  = wm8974_probe,
 677         .set_bias_level         = wm8974_set_bias_level,
 678         .controls               = wm8974_snd_controls,
 679         .num_controls           = ARRAY_SIZE(wm8974_snd_controls),
 680         .dapm_widgets           = wm8974_dapm_widgets,
 681         .num_dapm_widgets       = ARRAY_SIZE(wm8974_dapm_widgets),
 682         .dapm_routes            = wm8974_dapm_routes,
 683         .num_dapm_routes        = ARRAY_SIZE(wm8974_dapm_routes),
 684         .suspend_bias_off       = 1,
 685         .idle_bias_on           = 1,
 686         .use_pmdown_time        = 1,
 687         .endianness             = 1,
 688         .non_legacy_dai_naming  = 1,
 689 };
 690
 691 static int wm8974_i2c_probe(struct i2c_client *i2c,
 692                             const struct i2c_device_id *id)
 693 {
 694         struct wm8974_priv *priv;
 695         struct regmap *regmap;
 696         int ret;
 697
 698         priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL);
 699         if (!priv)
 700                 return -ENOMEM;
 701
 702         i2c_set_clientdata(i2c, priv);
 703
 704         regmap = devm_regmap_init_i2c(i2c, &wm8974_regmap);
 705         if (IS_ERR(regmap))
 706                 return PTR_ERR(regmap);
 707
 708         ret = devm_snd_soc_register_component(&i2c->dev,
 709                         &soc_component_dev_wm8974, &wm8974_dai, 1);
 710
 711         return ret;
 712 }
 713
 714 static const struct i2c_device_id wm8974_i2c_id[] = {
 715         { "wm8974", 0 },
 716         { }
 717 };
 718 MODULE_DEVICE_TABLE(i2c, wm8974_i2c_id);
 719
 720 static const struct of_device_id wm8974_of_match[] = {
 721        { .compatible = "wlf,wm8974", },
 722        { }
 723 };
 724 MODULE_DEVICE_TABLE(of, wm8974_of_match);
 725
 726 static struct i2c_driver wm8974_i2c_driver = {
 727         .driver = {
 728                 .name = "wm8974",
 729                 .of_match_table = wm8974_of_match,
 730         },
 731         .probe =    wm8974_i2c_probe,
 732         .id_table = wm8974_i2c_id,
 733 };
 734
 735 module_i2c_driver(wm8974_i2c_driver);
 736
 737 MODULE_DESCRIPTION("ASoC WM8974 driver");
 738 MODULE_AUTHOR("Liam Girdwood");
 739 MODULE_LICENSE("GPL");