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, 1),
 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 static const struct snd_soc_dapm_widget wm8974_dapm_widgets[] = {
 200 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8974_POWER3, 2, 0,
 201         &wm8974_speaker_mixer_controls[0],
 202         ARRAY_SIZE(wm8974_speaker_mixer_controls)),
 203 SND_SOC_DAPM_MIXER("Mono Mixer", WM8974_POWER3, 3, 0,
 204         &wm8974_mono_mixer_controls[0],
 205         ARRAY_SIZE(wm8974_mono_mixer_controls)),
 206 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8974_POWER3, 0, 0),
 207 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8974_POWER2, 0, 0),
 208 SND_SOC_DAPM_PGA("Aux Input", WM8974_POWER1, 6, 0, NULL, 0),
 209 SND_SOC_DAPM_PGA("SpkN Out", WM8974_POWER3, 5, 0, NULL, 0),
 210 SND_SOC_DAPM_PGA("SpkP Out", WM8974_POWER3, 6, 0, NULL, 0),
 211 SND_SOC_DAPM_PGA("Mono Out", WM8974_POWER3, 7, 0, NULL, 0),
 212
 213 SND_SOC_DAPM_MIXER("Input PGA", WM8974_POWER2, 2, 0, wm8974_inpga,
 214                    ARRAY_SIZE(wm8974_inpga)),
 215 SND_SOC_DAPM_MIXER("Boost Mixer", WM8974_POWER2, 4, 0,
 216                    wm8974_boost_mixer, ARRAY_SIZE(wm8974_boost_mixer)),
 217
 218 SND_SOC_DAPM_SUPPLY("Mic Bias", WM8974_POWER1, 4, 0, NULL, 0),
 219
 220 SND_SOC_DAPM_INPUT("MICN"),
 221 SND_SOC_DAPM_INPUT("MICP"),
 222 SND_SOC_DAPM_INPUT("AUX"),
 223 SND_SOC_DAPM_OUTPUT("MONOOUT"),
 224 SND_SOC_DAPM_OUTPUT("SPKOUTP"),
 225 SND_SOC_DAPM_OUTPUT("SPKOUTN"),
 226 };
 227
 228 static const struct snd_soc_dapm_route wm8974_dapm_routes[] = {
 229         /* Mono output mixer */
 230         {"Mono Mixer", "PCM Playback Switch", "DAC"},
 231         {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
 232         {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
 233
 234         /* Speaker output mixer */
 235         {"Speaker Mixer", "PCM Playback Switch", "DAC"},
 236         {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
 237         {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
 238
 239         /* Outputs */
 240         {"Mono Out", NULL, "Mono Mixer"},
 241         {"MONOOUT", NULL, "Mono Out"},
 242         {"SpkN Out", NULL, "Speaker Mixer"},
 243         {"SpkP Out", NULL, "Speaker Mixer"},
 244         {"SPKOUTN", NULL, "SpkN Out"},
 245         {"SPKOUTP", NULL, "SpkP Out"},
 246
 247         /* Boost Mixer */
 248         {"ADC", NULL, "Boost Mixer"},
 249         {"Boost Mixer", "Aux Switch", "Aux Input"},
 250         {"Boost Mixer", NULL, "Input PGA"},
 251         {"Boost Mixer", NULL, "MICP"},
 252
 253         /* Input PGA */
 254         {"Input PGA", "Aux Switch", "Aux Input"},
 255         {"Input PGA", "MicN Switch", "MICN"},
 256         {"Input PGA", "MicP Switch", "MICP"},
 257
 258         /* Inputs */
 259         {"Aux Input", NULL, "AUX"},
 260 };
 261
 262 struct pll_ {
 263         unsigned int pre_div:1;
 264         unsigned int n:4;
 265         unsigned int k;
 266 };
 267
 268 /* The size in bits of the pll divide multiplied by 10
 269  * to allow rounding later */
 270 #define FIXED_PLL_SIZE ((1 << 24) * 10)
 271
 272 static void pll_factors(struct pll_ *pll_div,
 273                         unsigned int target, unsigned int source)
 274 {
 275         unsigned long long Kpart;
 276         unsigned int K, Ndiv, Nmod;
 277
 278         /* There is a fixed divide by 4 in the output path */
 279         target *= 4;
 280
 281         Ndiv = target / source;
 282         if (Ndiv < 6) {
 283                 source /= 2;
 284                 pll_div->pre_div = 1;
 285                 Ndiv = target / source;
 286         } else
 287                 pll_div->pre_div = 0;
 288
 289         if ((Ndiv < 6) || (Ndiv > 12))
 290                 printk(KERN_WARNING
 291                         "WM8974 N value %u outwith recommended range!\n",
 292                         Ndiv);
 293
 294         pll_div->n = Ndiv;
 295         Nmod = target % source;
 296         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 297
 298         do_div(Kpart, source);
 299
 300         K = Kpart & 0xFFFFFFFF;
 301
 302         /* Check if we need to round */
 303         if ((K % 10) >= 5)
 304                 K += 5;
 305
 306         /* Move down to proper range now rounding is done */
 307         K /= 10;
 308
 309         pll_div->k = K;
 310 }
 311
 312 static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
 313                 int source, unsigned int freq_in, unsigned int freq_out)
 314 {
 315         struct snd_soc_component *component = codec_dai->component;
 316         struct pll_ pll_div;
 317         u16 reg;
 318
 319         if (freq_in == 0 || freq_out == 0) {
 320                 /* Clock CODEC directly from MCLK */
 321                 reg = snd_soc_component_read(component, WM8974_CLOCK);
 322                 snd_soc_component_write(component, WM8974_CLOCK, reg & 0x0ff);
 323
 324                 /* Turn off PLL */
 325                 reg = snd_soc_component_read(component, WM8974_POWER1);
 326                 snd_soc_component_write(component, WM8974_POWER1, reg & 0x1df);
 327                 return 0;
 328         }
 329
 330         pll_factors(&pll_div, freq_out, freq_in);
 331
 332         snd_soc_component_write(component, WM8974_PLLN, (pll_div.pre_div << 4) | pll_div.n);
 333         snd_soc_component_write(component, WM8974_PLLK1, pll_div.k >> 18);
 334         snd_soc_component_write(component, WM8974_PLLK2, (pll_div.k >> 9) & 0x1ff);
 335         snd_soc_component_write(component, WM8974_PLLK3, pll_div.k & 0x1ff);
 336         reg = snd_soc_component_read(component, WM8974_POWER1);
 337         snd_soc_component_write(component, WM8974_POWER1, reg | 0x020);
 338
 339         /* Run CODEC from PLL instead of MCLK */
 340         reg = snd_soc_component_read(component, WM8974_CLOCK);
 341         snd_soc_component_write(component, WM8974_CLOCK, reg | 0x100);
 342
 343         return 0;
 344 }
 345
 346 /*
 347  * Configure WM8974 clock dividers.
 348  */
 349 static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 350                 int div_id, int div)
 351 {
 352         struct snd_soc_component *component = codec_dai->component;
 353         u16 reg;
 354
 355         switch (div_id) {
 356         case WM8974_OPCLKDIV:
 357                 reg = snd_soc_component_read(component, WM8974_GPIO) & 0x1cf;
 358                 snd_soc_component_write(component, WM8974_GPIO, reg | div);
 359                 break;
 360         case WM8974_MCLKDIV:
 361                 reg = snd_soc_component_read(component, WM8974_CLOCK) & 0x11f;
 362                 snd_soc_component_write(component, WM8974_CLOCK, reg | div);
 363                 break;
 364         case WM8974_BCLKDIV:
 365                 reg = snd_soc_component_read(component, WM8974_CLOCK) & 0x1e3;
 366                 snd_soc_component_write(component, WM8974_CLOCK, reg | div);
 367                 break;
 368         default:
 369                 return -EINVAL;
 370         }
 371
 372         return 0;
 373 }
 374
 375 static unsigned int wm8974_get_mclkdiv(unsigned int f_in, unsigned int f_out,
 376                                        int *mclkdiv)
 377 {
 378         unsigned int ratio = 2 * f_in / f_out;
 379
 380         if (ratio <= 2) {
 381                 *mclkdiv = WM8974_MCLKDIV_1;
 382                 ratio = 2;
 383         } else if (ratio == 3) {
 384                 *mclkdiv = WM8974_MCLKDIV_1_5;
 385         } else if (ratio == 4) {
 386                 *mclkdiv = WM8974_MCLKDIV_2;
 387         } else if (ratio <= 6) {
 388                 *mclkdiv = WM8974_MCLKDIV_3;
 389                 ratio = 6;
 390         } else if (ratio <= 8) {
 391                 *mclkdiv = WM8974_MCLKDIV_4;
 392                 ratio = 8;
 393         } else if (ratio <= 12) {
 394                 *mclkdiv = WM8974_MCLKDIV_6;
 395                 ratio = 12;
 396         } else if (ratio <= 16) {
 397                 *mclkdiv = WM8974_MCLKDIV_8;
 398                 ratio = 16;
 399         } else {
 400                 *mclkdiv = WM8974_MCLKDIV_12;
 401                 ratio = 24;
 402         }
 403
 404         return f_out * ratio / 2;
 405 }
 406
 407 static int wm8974_update_clocks(struct snd_soc_dai *dai)
 408 {
 409         struct snd_soc_component *component = dai->component;
 410         struct wm8974_priv *priv = snd_soc_component_get_drvdata(component);
 411         unsigned int fs256;
 412         unsigned int fpll = 0;
 413         unsigned int f;
 414         int mclkdiv;
 415
 416         if (!priv->mclk || !priv->fs)
 417                 return 0;
 418
 419         fs256 = 256 * priv->fs;
 420
 421         f = wm8974_get_mclkdiv(priv->mclk, fs256, &mclkdiv);
 422
 423         if (f != priv->mclk) {
 424                 /* The PLL performs best around 90MHz */
 425                 fpll = wm8974_get_mclkdiv(22500000, fs256, &mclkdiv);
 426         }
 427
 428         wm8974_set_dai_pll(dai, 0, 0, priv->mclk, fpll);
 429         wm8974_set_dai_clkdiv(dai, WM8974_MCLKDIV, mclkdiv);
 430
 431         return 0;
 432 }
 433
 434 static int wm8974_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
 435                                  unsigned int freq, int dir)
 436 {
 437         struct snd_soc_component *component = dai->component;
 438         struct wm8974_priv *priv = snd_soc_component_get_drvdata(component);
 439
 440         if (dir != SND_SOC_CLOCK_IN)
 441                 return -EINVAL;
 442
 443         priv->mclk = freq;
 444
 445         return wm8974_update_clocks(dai);
 446 }
 447
 448 static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai,
 449                 unsigned int fmt)
 450 {
 451         struct snd_soc_component *component = codec_dai->component;
 452         u16 iface = 0;
 453         u16 clk = snd_soc_component_read(component, WM8974_CLOCK) & 0x1fe;
 454
 455         /* set master/slave audio interface */
 456         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 457         case SND_SOC_DAIFMT_CBM_CFM:
 458                 clk |= 0x0001;
 459                 break;
 460         case SND_SOC_DAIFMT_CBS_CFS:
 461                 break;
 462         default:
 463                 return -EINVAL;
 464         }
 465
 466         /* interface format */
 467         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 468         case SND_SOC_DAIFMT_I2S:
 469                 iface |= 0x0010;
 470                 break;
 471         case SND_SOC_DAIFMT_RIGHT_J:
 472                 break;
 473         case SND_SOC_DAIFMT_LEFT_J:
 474                 iface |= 0x0008;
 475                 break;
 476         case SND_SOC_DAIFMT_DSP_A:
 477                 if ((fmt & SND_SOC_DAIFMT_INV_MASK) == SND_SOC_DAIFMT_IB_IF ||
 478                     (fmt & SND_SOC_DAIFMT_INV_MASK) == SND_SOC_DAIFMT_NB_IF) {
 479                         return -EINVAL;
 480                 }
 481                 iface |= 0x00018;
 482                 break;
 483         default:
 484                 return -EINVAL;
 485         }
 486
 487         /* clock inversion */
 488         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 489         case SND_SOC_DAIFMT_NB_NF:
 490                 break;
 491         case SND_SOC_DAIFMT_IB_IF:
 492                 iface |= 0x0180;
 493                 break;
 494         case SND_SOC_DAIFMT_IB_NF:
 495                 iface |= 0x0100;
 496                 break;
 497         case SND_SOC_DAIFMT_NB_IF:
 498                 iface |= 0x0080;
 499                 break;
 500         default:
 501                 return -EINVAL;
 502         }
 503
 504         snd_soc_component_write(component, WM8974_IFACE, iface);
 505         snd_soc_component_write(component, WM8974_CLOCK, clk);
 506         return 0;
 507 }
 508
 509 static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream,
 510                                 struct snd_pcm_hw_params *params,
 511                                 struct snd_soc_dai *dai)
 512 {
 513         struct snd_soc_component *component = dai->component;
 514         struct wm8974_priv *priv = snd_soc_component_get_drvdata(component);
 515         u16 iface = snd_soc_component_read(component, WM8974_IFACE) & 0x19f;
 516         u16 adn = snd_soc_component_read(component, WM8974_ADD) & 0x1f1;
 517         int err;
 518
 519         priv->fs = params_rate(params);
 520         err = wm8974_update_clocks(dai);
 521         if (err)
 522                 return err;
 523
 524         /* bit size */
 525         switch (params_width(params)) {
 526         case 16:
 527                 break;
 528         case 20:
 529                 iface |= 0x0020;
 530                 break;
 531         case 24:
 532                 iface |= 0x0040;
 533                 break;
 534         case 32:
 535                 iface |= 0x0060;
 536                 break;
 537         }
 538
 539         /* filter coefficient */
 540         switch (params_rate(params)) {
 541         case 8000:
 542                 adn |= 0x5 << 1;
 543                 break;
 544         case 11025:
 545                 adn |= 0x4 << 1;
 546                 break;
 547         case 16000:
 548                 adn |= 0x3 << 1;
 549                 break;
 550         case 22050:
 551                 adn |= 0x2 << 1;
 552                 break;
 553         case 32000:
 554                 adn |= 0x1 << 1;
 555                 break;
 556         case 44100:
 557         case 48000:
 558                 break;
 559         }
 560
 561         snd_soc_component_write(component, WM8974_IFACE, iface);
 562         snd_soc_component_write(component, WM8974_ADD, adn);
 563         return 0;
 564 }
 565
 566 static int wm8974_mute(struct snd_soc_dai *dai, int mute, int direction)
 567 {
 568         struct snd_soc_component *component = dai->component;
 569         u16 mute_reg = snd_soc_component_read(component, WM8974_DAC) & 0xffbf;
 570
 571         if (mute)
 572                 snd_soc_component_write(component, WM8974_DAC, mute_reg | 0x40);
 573         else
 574                 snd_soc_component_write(component, WM8974_DAC, mute_reg);
 575         return 0;
 576 }
 577
 578 /* liam need to make this lower power with dapm */
 579 static int wm8974_set_bias_level(struct snd_soc_component *component,
 580         enum snd_soc_bias_level level)
 581 {
 582         u16 power1 = snd_soc_component_read(component, WM8974_POWER1) & ~0x3;
 583
 584         switch (level) {
 585         case SND_SOC_BIAS_ON:
 586         case SND_SOC_BIAS_PREPARE:
 587                 power1 |= 0x1;  /* VMID 50k */
 588                 snd_soc_component_write(component, WM8974_POWER1, power1);
 589                 break;
 590
 591         case SND_SOC_BIAS_STANDBY:
 592                 power1 |= WM8974_POWER1_BIASEN | WM8974_POWER1_BUFIOEN;
 593
 594                 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
 595                         regcache_sync(dev_get_regmap(component->dev, NULL));
 596
 597                         /* Initial cap charge at VMID 5k */
 598                         snd_soc_component_write(component, WM8974_POWER1, power1 | 0x3);
 599                         mdelay(100);
 600                 }
 601
 602                 power1 |= 0x2;  /* VMID 500k */
 603                 snd_soc_component_write(component, WM8974_POWER1, power1);
 604                 break;
 605
 606         case SND_SOC_BIAS_OFF:
 607                 snd_soc_component_write(component, WM8974_POWER1, 0);
 608                 snd_soc_component_write(component, WM8974_POWER2, 0);
 609                 snd_soc_component_write(component, WM8974_POWER3, 0);
 610                 break;
 611         }
 612
 613         return 0;
 614 }
 615
 616 #define WM8974_RATES (SNDRV_PCM_RATE_8000_48000)
 617
 618 #define WM8974_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 619         SNDRV_PCM_FMTBIT_S24_LE)
 620
 621 static const struct snd_soc_dai_ops wm8974_ops = {
 622         .hw_params = wm8974_pcm_hw_params,
 623         .mute_stream = wm8974_mute,
 624         .set_fmt = wm8974_set_dai_fmt,
 625         .set_clkdiv = wm8974_set_dai_clkdiv,
 626         .set_pll = wm8974_set_dai_pll,
 627         .set_sysclk = wm8974_set_dai_sysclk,
 628         .no_capture_mute = 1,
 629 };
 630
 631 static struct snd_soc_dai_driver wm8974_dai = {
 632         .name = "wm8974-hifi",
 633         .playback = {
 634                 .stream_name = "Playback",
 635                 .channels_min = 1,
 636                 .channels_max = 2,   /* Only 1 channel of data */
 637                 .rates = WM8974_RATES,
 638                 .formats = WM8974_FORMATS,},
 639         .capture = {
 640                 .stream_name = "Capture",
 641                 .channels_min = 1,
 642                 .channels_max = 2,   /* Only 1 channel of data */
 643                 .rates = WM8974_RATES,
 644                 .formats = WM8974_FORMATS,},
 645         .ops = &wm8974_ops,
 646         .symmetric_rates = 1,
 647 };
 648
 649 static const struct regmap_config wm8974_regmap = {
 650         .reg_bits = 7,
 651         .val_bits = 9,
 652
 653         .max_register = WM8974_MONOMIX,
 654         .reg_defaults = wm8974_reg_defaults,
 655         .num_reg_defaults = ARRAY_SIZE(wm8974_reg_defaults),
 656         .cache_type = REGCACHE_FLAT,
 657 };
 658
 659 static int wm8974_probe(struct snd_soc_component *component)
 660 {
 661         int ret = 0;
 662
 663         ret = wm8974_reset(component);
 664         if (ret < 0) {
 665                 dev_err(component->dev, "Failed to issue reset\n");
 666                 return ret;
 667         }
 668
 669         return 0;
 670 }
 671
 672 static const struct snd_soc_component_driver soc_component_dev_wm8974 = {
 673         .probe                  = wm8974_probe,
 674         .set_bias_level         = wm8974_set_bias_level,
 675         .controls               = wm8974_snd_controls,
 676         .num_controls           = ARRAY_SIZE(wm8974_snd_controls),
 677         .dapm_widgets           = wm8974_dapm_widgets,
 678         .num_dapm_widgets       = ARRAY_SIZE(wm8974_dapm_widgets),
 679         .dapm_routes            = wm8974_dapm_routes,
 680         .num_dapm_routes        = ARRAY_SIZE(wm8974_dapm_routes),
 681         .suspend_bias_off       = 1,
 682         .idle_bias_on           = 1,
 683         .use_pmdown_time        = 1,
 684         .endianness             = 1,
 685         .non_legacy_dai_naming  = 1,
 686 };
 687
 688 static int wm8974_i2c_probe(struct i2c_client *i2c,
 689                             const struct i2c_device_id *id)
 690 {
 691         struct wm8974_priv *priv;
 692         struct regmap *regmap;
 693         int ret;
 694
 695         priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL);
 696         if (!priv)
 697                 return -ENOMEM;
 698
 699         i2c_set_clientdata(i2c, priv);
 700
 701         regmap = devm_regmap_init_i2c(i2c, &wm8974_regmap);
 702         if (IS_ERR(regmap))
 703                 return PTR_ERR(regmap);
 704
 705         ret = devm_snd_soc_register_component(&i2c->dev,
 706                         &soc_component_dev_wm8974, &wm8974_dai, 1);
 707
 708         return ret;
 709 }
 710
 711 static const struct i2c_device_id wm8974_i2c_id[] = {
 712         { "wm8974", 0 },
 713         { }
 714 };
 715 MODULE_DEVICE_TABLE(i2c, wm8974_i2c_id);
 716
 717 static const struct of_device_id wm8974_of_match[] = {
 718        { .compatible = "wlf,wm8974", },
 719        { }
 720 };
 721 MODULE_DEVICE_TABLE(of, wm8974_of_match);
 722
 723 static struct i2c_driver wm8974_i2c_driver = {
 724         .driver = {
 725                 .name = "wm8974",
 726                 .of_match_table = wm8974_of_match,
 727         },
 728         .probe =    wm8974_i2c_probe,
 729         .id_table = wm8974_i2c_id,
 730 };
 731
 732 module_i2c_driver(wm8974_i2c_driver);
 733
 734 MODULE_DESCRIPTION("ASoC WM8974 driver");
 735 MODULE_AUTHOR("Liam Girdwood");
 736 MODULE_LICENSE("GPL");