sound/soc/codecs/ak4535.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * ak4535.c  --  AK4535 ALSA Soc Audio driver
   4  *
   5  * Copyright 2005 Openedhand Ltd.
   6  *
   7  * Author: Richard Purdie <richard@openedhand.com>
   8  *
   9  * Based on wm8753.c by Liam Girdwood
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/init.h>
  15 #include <linux/delay.h>
  16 #include <linux/pm.h>
  17 #include <linux/i2c.h>
  18 #include <linux/regmap.h>
  19 #include <linux/slab.h>
  20 #include <sound/core.h>
  21 #include <sound/pcm.h>
  22 #include <sound/pcm_params.h>
  23 #include <sound/soc.h>
  24 #include <sound/initval.h>
  25
  26 #include "ak4535.h"
  27
  28 /* codec private data */
  29 struct ak4535_priv {
  30         struct regmap *regmap;
  31         unsigned int sysclk;
  32 };
  33
  34 /*
  35  * ak4535 register cache
  36  */
  37 static const struct reg_default ak4535_reg_defaults[] = {
  38         { 0, 0x00 },
  39         { 1, 0x80 },
  40         { 2, 0x00 },
  41         { 3, 0x03 },
  42         { 4, 0x02 },
  43         { 5, 0x00 },
  44         { 6, 0x11 },
  45         { 7, 0x01 },
  46         { 8, 0x00 },
  47         { 9, 0x40 },
  48         { 10, 0x36 },
  49         { 11, 0x10 },
  50         { 12, 0x00 },
  51         { 13, 0x00 },
  52         { 14, 0x57 },
  53 };
  54
  55 static bool ak4535_volatile(struct device *dev, unsigned int reg)
  56 {
  57         switch (reg) {
  58         case AK4535_STATUS:
  59                 return true;
  60         default:
  61                 return false;
  62         }
  63 }
  64
  65 static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"};
  66 static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"};
  67 static const char *ak4535_hp_out[] = {"Stereo", "Mono"};
  68 static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"};
  69 static const char *ak4535_mic_select[] = {"Internal", "External"};
  70
  71 static const struct soc_enum ak4535_enum[] = {
  72         SOC_ENUM_SINGLE(AK4535_SIG1, 7, 2, ak4535_mono_gain),
  73         SOC_ENUM_SINGLE(AK4535_SIG1, 6, 2, ak4535_mono_out),
  74         SOC_ENUM_SINGLE(AK4535_MODE2, 2, 2, ak4535_hp_out),
  75         SOC_ENUM_SINGLE(AK4535_DAC, 0, 4, ak4535_deemp),
  76         SOC_ENUM_SINGLE(AK4535_MIC, 1, 2, ak4535_mic_select),
  77 };
  78
  79 static const struct snd_kcontrol_new ak4535_snd_controls[] = {
  80         SOC_SINGLE("ALC2 Switch", AK4535_SIG1, 1, 1, 0),
  81         SOC_ENUM("Mono 1 Output", ak4535_enum[1]),
  82         SOC_ENUM("Mono 1 Gain", ak4535_enum[0]),
  83         SOC_ENUM("Headphone Output", ak4535_enum[2]),
  84         SOC_ENUM("Playback Deemphasis", ak4535_enum[3]),
  85         SOC_SINGLE("Bass Volume", AK4535_DAC, 2, 3, 0),
  86         SOC_SINGLE("Mic Boost (+20dB) Switch", AK4535_MIC, 0, 1, 0),
  87         SOC_ENUM("Mic Select", ak4535_enum[4]),
  88         SOC_SINGLE("ALC Operation Time", AK4535_TIMER, 0, 3, 0),
  89         SOC_SINGLE("ALC Recovery Time", AK4535_TIMER, 2, 3, 0),
  90         SOC_SINGLE("ALC ZC Time", AK4535_TIMER, 4, 3, 0),
  91         SOC_SINGLE("ALC 1 Switch", AK4535_ALC1, 5, 1, 0),
  92         SOC_SINGLE("ALC 2 Switch", AK4535_ALC1, 6, 1, 0),
  93         SOC_SINGLE("ALC Volume", AK4535_ALC2, 0, 127, 0),
  94         SOC_SINGLE("Capture Volume", AK4535_PGA, 0, 127, 0),
  95         SOC_SINGLE("Left Playback Volume", AK4535_LATT, 0, 127, 1),
  96         SOC_SINGLE("Right Playback Volume", AK4535_RATT, 0, 127, 1),
  97         SOC_SINGLE("AUX Bypass Volume", AK4535_VOL, 0, 15, 0),
  98         SOC_SINGLE("Mic Sidetone Volume", AK4535_VOL, 4, 7, 0),
  99 };
 100
 101 /* Mono 1 Mixer */
 102 static const struct snd_kcontrol_new ak4535_mono1_mixer_controls[] = {
 103         SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG1, 4, 1, 0),
 104         SOC_DAPM_SINGLE("Mono Playback Switch", AK4535_SIG1, 5, 1, 0),
 105 };
 106
 107 /* Stereo Mixer */
 108 static const struct snd_kcontrol_new ak4535_stereo_mixer_controls[] = {
 109         SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG2, 4, 1, 0),
 110         SOC_DAPM_SINGLE("Playback Switch", AK4535_SIG2, 7, 1, 0),
 111         SOC_DAPM_SINGLE("Aux Bypass Switch", AK4535_SIG2, 5, 1, 0),
 112 };
 113
 114 /* Input Mixer */
 115 static const struct snd_kcontrol_new ak4535_input_mixer_controls[] = {
 116         SOC_DAPM_SINGLE("Mic Capture Switch", AK4535_MIC, 2, 1, 0),
 117         SOC_DAPM_SINGLE("Aux Capture Switch", AK4535_MIC, 5, 1, 0),
 118 };
 119
 120 /* Input mux */
 121 static const struct snd_kcontrol_new ak4535_input_mux_control =
 122         SOC_DAPM_ENUM("Input Select", ak4535_enum[4]);
 123
 124 /* HP L switch */
 125 static const struct snd_kcontrol_new ak4535_hpl_control =
 126         SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1);
 127
 128 /* HP R switch */
 129 static const struct snd_kcontrol_new ak4535_hpr_control =
 130         SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1);
 131
 132 /* mono 2 switch */
 133 static const struct snd_kcontrol_new ak4535_mono2_control =
 134         SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0);
 135
 136 /* Line out switch */
 137 static const struct snd_kcontrol_new ak4535_line_control =
 138         SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0);
 139
 140 /* ak4535 dapm widgets */
 141 static const struct snd_soc_dapm_widget ak4535_dapm_widgets[] = {
 142         SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
 143                 &ak4535_stereo_mixer_controls[0],
 144                 ARRAY_SIZE(ak4535_stereo_mixer_controls)),
 145         SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
 146                 &ak4535_mono1_mixer_controls[0],
 147                 ARRAY_SIZE(ak4535_mono1_mixer_controls)),
 148         SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
 149                 &ak4535_input_mixer_controls[0],
 150                 ARRAY_SIZE(ak4535_input_mixer_controls)),
 151         SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
 152                 &ak4535_input_mux_control),
 153         SND_SOC_DAPM_DAC("DAC", "Playback", AK4535_PM2, 0, 0),
 154         SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
 155                 &ak4535_mono2_control),
 156         /* speaker powersave bit */
 157         SND_SOC_DAPM_PGA("Speaker Enable", AK4535_MODE2, 0, 0, NULL, 0),
 158         SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0,
 159                 &ak4535_line_control),
 160         SND_SOC_DAPM_SWITCH("Left HP Enable", SND_SOC_NOPM, 0, 0,
 161                 &ak4535_hpl_control),
 162         SND_SOC_DAPM_SWITCH("Right HP Enable", SND_SOC_NOPM, 0, 0,
 163                 &ak4535_hpr_control),
 164         SND_SOC_DAPM_OUTPUT("LOUT"),
 165         SND_SOC_DAPM_OUTPUT("HPL"),
 166         SND_SOC_DAPM_OUTPUT("ROUT"),
 167         SND_SOC_DAPM_OUTPUT("HPR"),
 168         SND_SOC_DAPM_OUTPUT("SPP"),
 169         SND_SOC_DAPM_OUTPUT("SPN"),
 170         SND_SOC_DAPM_OUTPUT("MOUT1"),
 171         SND_SOC_DAPM_OUTPUT("MOUT2"),
 172         SND_SOC_DAPM_OUTPUT("MICOUT"),
 173         SND_SOC_DAPM_ADC("ADC", "Capture", AK4535_PM1, 0, 0),
 174         SND_SOC_DAPM_PGA("Spk Amp", AK4535_PM2, 3, 0, NULL, 0),
 175         SND_SOC_DAPM_PGA("HP R Amp", AK4535_PM2, 1, 0, NULL, 0),
 176         SND_SOC_DAPM_PGA("HP L Amp", AK4535_PM2, 2, 0, NULL, 0),
 177         SND_SOC_DAPM_PGA("Mic", AK4535_PM1, 1, 0, NULL, 0),
 178         SND_SOC_DAPM_PGA("Line Out", AK4535_PM1, 4, 0, NULL, 0),
 179         SND_SOC_DAPM_PGA("Mono Out", AK4535_PM1, 3, 0, NULL, 0),
 180         SND_SOC_DAPM_PGA("AUX In", AK4535_PM1, 2, 0, NULL, 0),
 181
 182         SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4535_MIC, 3, 0),
 183         SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4535_MIC, 4, 0),
 184         SND_SOC_DAPM_INPUT("MICIN"),
 185         SND_SOC_DAPM_INPUT("MICEXT"),
 186         SND_SOC_DAPM_INPUT("AUX"),
 187         SND_SOC_DAPM_INPUT("MIN"),
 188         SND_SOC_DAPM_INPUT("AIN"),
 189 };
 190
 191 static const struct snd_soc_dapm_route ak4535_audio_map[] = {
 192         /*stereo mixer */
 193         {"Stereo Mixer", "Playback Switch", "DAC"},
 194         {"Stereo Mixer", "Mic Sidetone Switch", "Mic"},
 195         {"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
 196
 197         /* mono1 mixer */
 198         {"Mono1 Mixer", "Mic Sidetone Switch", "Mic"},
 199         {"Mono1 Mixer", "Mono Playback Switch", "DAC"},
 200
 201         /* Mic */
 202         {"Mic", NULL, "AIN"},
 203         {"Input Mux", "Internal", "Mic Int Bias"},
 204         {"Input Mux", "External", "Mic Ext Bias"},
 205         {"Mic Int Bias", NULL, "MICIN"},
 206         {"Mic Ext Bias", NULL, "MICEXT"},
 207         {"MICOUT", NULL, "Input Mux"},
 208
 209         /* line out */
 210         {"LOUT", NULL, "Line Out Enable"},
 211         {"ROUT", NULL, "Line Out Enable"},
 212         {"Line Out Enable", "Switch", "Line Out"},
 213         {"Line Out", NULL, "Stereo Mixer"},
 214
 215         /* mono1 out */
 216         {"MOUT1", NULL, "Mono Out"},
 217         {"Mono Out", NULL, "Mono1 Mixer"},
 218
 219         /* left HP */
 220         {"HPL", NULL, "Left HP Enable"},
 221         {"Left HP Enable", "Switch", "HP L Amp"},
 222         {"HP L Amp", NULL, "Stereo Mixer"},
 223
 224         /* right HP */
 225         {"HPR", NULL, "Right HP Enable"},
 226         {"Right HP Enable", "Switch", "HP R Amp"},
 227         {"HP R Amp", NULL, "Stereo Mixer"},
 228
 229         /* speaker */
 230         {"SPP", NULL, "Speaker Enable"},
 231         {"SPN", NULL, "Speaker Enable"},
 232         {"Speaker Enable", "Switch", "Spk Amp"},
 233         {"Spk Amp", NULL, "MIN"},
 234
 235         /* mono 2 */
 236         {"MOUT2", NULL, "Mono 2 Enable"},
 237         {"Mono 2 Enable", "Switch", "Stereo Mixer"},
 238
 239         /* Aux In */
 240         {"Aux In", NULL, "AUX"},
 241
 242         /* ADC */
 243         {"ADC", NULL, "Input Mixer"},
 244         {"Input Mixer", "Mic Capture Switch", "Mic"},
 245         {"Input Mixer", "Aux Capture Switch", "Aux In"},
 246 };
 247
 248 static int ak4535_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 249         int clk_id, unsigned int freq, int dir)
 250 {
 251         struct snd_soc_component *component = codec_dai->component;
 252         struct ak4535_priv *ak4535 = snd_soc_component_get_drvdata(component);
 253
 254         ak4535->sysclk = freq;
 255         return 0;
 256 }
 257
 258 static int ak4535_hw_params(struct snd_pcm_substream *substream,
 259                             struct snd_pcm_hw_params *params,
 260                             struct snd_soc_dai *dai)
 261 {
 262         struct snd_soc_component *component = dai->component;
 263         struct ak4535_priv *ak4535 = snd_soc_component_get_drvdata(component);
 264         u8 mode2 = snd_soc_component_read32(component, AK4535_MODE2) & ~(0x3 << 5);
 265         int rate = params_rate(params), fs = 256;
 266
 267         if (rate)
 268                 fs = ak4535->sysclk / rate;
 269
 270         /* set fs */
 271         switch (fs) {
 272         case 1024:
 273                 mode2 |= (0x2 << 5);
 274                 break;
 275         case 512:
 276                 mode2 |= (0x1 << 5);
 277                 break;
 278         case 256:
 279                 break;
 280         }
 281
 282         /* set rate */
 283         snd_soc_component_write(component, AK4535_MODE2, mode2);
 284         return 0;
 285 }
 286
 287 static int ak4535_set_dai_fmt(struct snd_soc_dai *codec_dai,
 288                 unsigned int fmt)
 289 {
 290         struct snd_soc_component *component = codec_dai->component;
 291         u8 mode1 = 0;
 292
 293         /* interface format */
 294         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 295         case SND_SOC_DAIFMT_I2S:
 296                 mode1 = 0x0002;
 297                 break;
 298         case SND_SOC_DAIFMT_LEFT_J:
 299                 mode1 = 0x0001;
 300                 break;
 301         default:
 302                 return -EINVAL;
 303         }
 304
 305         /* use 32 fs for BCLK to save power */
 306         mode1 |= 0x4;
 307
 308         snd_soc_component_write(component, AK4535_MODE1, mode1);
 309         return 0;
 310 }
 311
 312 static int ak4535_mute(struct snd_soc_dai *dai, int mute)
 313 {
 314         struct snd_soc_component *component = dai->component;
 315         u16 mute_reg = snd_soc_component_read32(component, AK4535_DAC);
 316         if (!mute)
 317                 snd_soc_component_write(component, AK4535_DAC, mute_reg & ~0x20);
 318         else
 319                 snd_soc_component_write(component, AK4535_DAC, mute_reg | 0x20);
 320         return 0;
 321 }
 322
 323 static int ak4535_set_bias_level(struct snd_soc_component *component,
 324         enum snd_soc_bias_level level)
 325 {
 326         switch (level) {
 327         case SND_SOC_BIAS_ON:
 328                 snd_soc_component_update_bits(component, AK4535_DAC, 0x20, 0);
 329                 break;
 330         case SND_SOC_BIAS_PREPARE:
 331                 snd_soc_component_update_bits(component, AK4535_DAC, 0x20, 0x20);
 332                 break;
 333         case SND_SOC_BIAS_STANDBY:
 334                 snd_soc_component_update_bits(component, AK4535_PM1, 0x80, 0x80);
 335                 snd_soc_component_update_bits(component, AK4535_PM2, 0x80, 0);
 336                 break;
 337         case SND_SOC_BIAS_OFF:
 338                 snd_soc_component_update_bits(component, AK4535_PM1, 0x80, 0);
 339                 break;
 340         }
 341         return 0;
 342 }
 343
 344 #define AK4535_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 345                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
 346                 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
 347
 348 static const struct snd_soc_dai_ops ak4535_dai_ops = {
 349         .hw_params      = ak4535_hw_params,
 350         .set_fmt        = ak4535_set_dai_fmt,
 351         .digital_mute   = ak4535_mute,
 352         .set_sysclk     = ak4535_set_dai_sysclk,
 353 };
 354
 355 static struct snd_soc_dai_driver ak4535_dai = {
 356         .name = "ak4535-hifi",
 357         .playback = {
 358                 .stream_name = "Playback",
 359                 .channels_min = 1,
 360                 .channels_max = 2,
 361                 .rates = AK4535_RATES,
 362                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 363         .capture = {
 364                 .stream_name = "Capture",
 365                 .channels_min = 1,
 366                 .channels_max = 2,
 367                 .rates = AK4535_RATES,
 368                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 369         .ops = &ak4535_dai_ops,
 370 };
 371
 372 static int ak4535_resume(struct snd_soc_component *component)
 373 {
 374         snd_soc_component_cache_sync(component);
 375         return 0;
 376 }
 377
 378 static const struct regmap_config ak4535_regmap = {
 379         .reg_bits = 8,
 380         .val_bits = 8,
 381
 382         .max_register = AK4535_STATUS,
 383         .volatile_reg = ak4535_volatile,
 384
 385         .cache_type = REGCACHE_RBTREE,
 386         .reg_defaults = ak4535_reg_defaults,
 387         .num_reg_defaults = ARRAY_SIZE(ak4535_reg_defaults),
 388 };
 389
 390 static const struct snd_soc_component_driver soc_component_dev_ak4535 = {
 391         .resume                 = ak4535_resume,
 392         .set_bias_level         = ak4535_set_bias_level,
 393         .controls               = ak4535_snd_controls,
 394         .num_controls           = ARRAY_SIZE(ak4535_snd_controls),
 395         .dapm_widgets           = ak4535_dapm_widgets,
 396         .num_dapm_widgets       = ARRAY_SIZE(ak4535_dapm_widgets),
 397         .dapm_routes            = ak4535_audio_map,
 398         .num_dapm_routes        = ARRAY_SIZE(ak4535_audio_map),
 399         .suspend_bias_off       = 1,
 400         .idle_bias_on           = 1,
 401         .use_pmdown_time        = 1,
 402         .endianness             = 1,
 403         .non_legacy_dai_naming  = 1,
 404 };
 405
 406 static int ak4535_i2c_probe(struct i2c_client *i2c,
 407                             const struct i2c_device_id *id)
 408 {
 409         struct ak4535_priv *ak4535;
 410         int ret;
 411
 412         ak4535 = devm_kzalloc(&i2c->dev, sizeof(struct ak4535_priv),
 413                               GFP_KERNEL);
 414         if (ak4535 == NULL)
 415                 return -ENOMEM;
 416
 417         ak4535->regmap = devm_regmap_init_i2c(i2c, &ak4535_regmap);
 418         if (IS_ERR(ak4535->regmap)) {
 419                 ret = PTR_ERR(ak4535->regmap);
 420                 dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
 421                 return ret;
 422         }
 423
 424         i2c_set_clientdata(i2c, ak4535);
 425
 426         ret = devm_snd_soc_register_component(&i2c->dev,
 427                         &soc_component_dev_ak4535, &ak4535_dai, 1);
 428
 429         return ret;
 430 }
 431
 432 static const struct i2c_device_id ak4535_i2c_id[] = {
 433         { "ak4535", 0 },
 434         { }
 435 };
 436 MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id);
 437
 438 static struct i2c_driver ak4535_i2c_driver = {
 439         .driver = {
 440                 .name = "ak4535",
 441         },
 442         .probe =    ak4535_i2c_probe,
 443         .id_table = ak4535_i2c_id,
 444 };
 445
 446 module_i2c_driver(ak4535_i2c_driver);
 447
 448 MODULE_DESCRIPTION("Soc AK4535 driver");
 449 MODULE_AUTHOR("Richard Purdie");
 450 MODULE_LICENSE("GPL");