sound/soc/codecs/max9867.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // MAX9867 ALSA SoC codec driver
   4 //
   5 // Copyright 2013-2015 Maxim Integrated Products
   6 // Copyright 2018 Ladislav Michl <ladis@linux-mips.org>
   7 //
   8
   9 #include <linux/delay.h>
  10 #include <linux/i2c.h>
  11 #include <linux/module.h>
  12 #include <linux/regmap.h>
  13 #include <sound/pcm_params.h>
  14 #include <sound/soc.h>
  15 #include <sound/tlv.h>
  16 #include "max9867.h"
  17
  18 struct max9867_priv {
  19         struct regmap *regmap;
  20         const struct snd_pcm_hw_constraint_list *constraints;
  21         unsigned int sysclk, pclk;
  22         bool master, dsp_a;
  23         unsigned int adc_dac_active;
  24 };
  25
  26 static const char *const max9867_spmode[] = {
  27         "Stereo Diff", "Mono Diff",
  28         "Stereo Cap", "Mono Cap",
  29         "Stereo Single", "Mono Single",
  30         "Stereo Single Fast", "Mono Single Fast"
  31 };
  32 static const char *const max9867_filter_text[] = {"IIR", "FIR"};
  33
  34 static const char *const max9867_adc_dac_filter_text[] = {
  35         "Disabled",
  36         "Elliptical/16/256",
  37         "Butterworth/16/500",
  38         "Elliptical/8/256",
  39         "Butterworth/8/500",
  40         "Butterworth/8-24"
  41 };
  42
  43 enum max9867_adc_dac {
  44         MAX9867_ADC_LEFT,
  45         MAX9867_ADC_RIGHT,
  46         MAX9867_DAC_LEFT,
  47         MAX9867_DAC_RIGHT,
  48 };
  49
  50 static int max9867_adc_dac_event(struct snd_soc_dapm_widget *w,
  51         struct snd_kcontrol *kcontrol, int event)
  52 {
  53         struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
  54         struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
  55         enum max9867_adc_dac adc_dac;
  56
  57         if (!strcmp(w->name, "ADCL"))
  58                 adc_dac = MAX9867_ADC_LEFT;
  59         else if (!strcmp(w->name, "ADCR"))
  60                 adc_dac = MAX9867_ADC_RIGHT;
  61         else if (!strcmp(w->name, "DACL"))
  62                 adc_dac = MAX9867_DAC_LEFT;
  63         else if (!strcmp(w->name, "DACR"))
  64                 adc_dac = MAX9867_DAC_RIGHT;
  65         else
  66                 return 0;
  67
  68         if (SND_SOC_DAPM_EVENT_ON(event))
  69                 max9867->adc_dac_active |= BIT(adc_dac);
  70         else if (SND_SOC_DAPM_EVENT_OFF(event))
  71                 max9867->adc_dac_active &= ~BIT(adc_dac);
  72
  73         return 0;
  74 }
  75
  76 static int max9867_filter_get(struct snd_kcontrol *kcontrol,
  77                               struct snd_ctl_elem_value *ucontrol)
  78 {
  79         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
  80         struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
  81         unsigned int reg;
  82         int ret;
  83
  84         ret = regmap_read(max9867->regmap, MAX9867_CODECFLTR, &reg);
  85         if (ret)
  86                 return -EINVAL;
  87
  88         if (reg & MAX9867_CODECFLTR_MODE)
  89                 ucontrol->value.enumerated.item[0] = 1;
  90         else
  91                 ucontrol->value.enumerated.item[0] = 0;
  92
  93         return 0;
  94 }
  95
  96 static int max9867_filter_set(struct snd_kcontrol *kcontrol,
  97                               struct snd_ctl_elem_value *ucontrol)
  98 {
  99         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 100         struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
 101         unsigned int reg, mode = ucontrol->value.enumerated.item[0];
 102         int ret;
 103
 104         if (mode > 1)
 105                 return -EINVAL;
 106
 107         /* don't allow change if ADC/DAC active */
 108         if (max9867->adc_dac_active)
 109                 return -EBUSY;
 110
 111         /* read current filter mode */
 112         ret = regmap_read(max9867->regmap, MAX9867_CODECFLTR, &reg);
 113         if (ret)
 114                 return -EINVAL;
 115
 116         if (mode)
 117                 mode = MAX9867_CODECFLTR_MODE;
 118
 119         /* check if change is needed */
 120         if ((reg & MAX9867_CODECFLTR_MODE) == mode)
 121                 return 0;
 122
 123         /* shutdown codec before switching filter mode */
 124         regmap_update_bits(max9867->regmap, MAX9867_PWRMAN,
 125                 MAX9867_PWRMAN_SHDN, 0);
 126
 127         /* switch filter mode */
 128         regmap_update_bits(max9867->regmap, MAX9867_CODECFLTR,
 129                 MAX9867_CODECFLTR_MODE, mode);
 130
 131         /* out of shutdown now */
 132         regmap_update_bits(max9867->regmap, MAX9867_PWRMAN,
 133                 MAX9867_PWRMAN_SHDN, MAX9867_PWRMAN_SHDN);
 134
 135         return 0;
 136 }
 137
 138 static SOC_ENUM_SINGLE_EXT_DECL(max9867_filter, max9867_filter_text);
 139 static SOC_ENUM_SINGLE_DECL(max9867_dac_filter, MAX9867_CODECFLTR, 0,
 140         max9867_adc_dac_filter_text);
 141 static SOC_ENUM_SINGLE_DECL(max9867_adc_filter, MAX9867_CODECFLTR, 4,
 142         max9867_adc_dac_filter_text);
 143 static SOC_ENUM_SINGLE_DECL(max9867_spkmode, MAX9867_MODECONFIG, 0,
 144         max9867_spmode);
 145 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(max9867_master_tlv,
 146          0,  2, TLV_DB_SCALE_ITEM(-8600, 200, 1),
 147          3, 17, TLV_DB_SCALE_ITEM(-7800, 400, 0),
 148         18, 25, TLV_DB_SCALE_ITEM(-2000, 200, 0),
 149         26, 34, TLV_DB_SCALE_ITEM( -500, 100, 0),
 150         35, 40, TLV_DB_SCALE_ITEM(  350,  50, 0),
 151 );
 152 static DECLARE_TLV_DB_SCALE(max9867_mic_tlv, 0, 100, 0);
 153 static DECLARE_TLV_DB_SCALE(max9867_line_tlv, -600, 200, 0);
 154 static DECLARE_TLV_DB_SCALE(max9867_adc_tlv, -1200, 100, 0);
 155 static DECLARE_TLV_DB_SCALE(max9867_dac_tlv, -1500, 100, 0);
 156 static DECLARE_TLV_DB_SCALE(max9867_dacboost_tlv, 0, 600, 0);
 157 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(max9867_micboost_tlv,
 158         0, 2, TLV_DB_SCALE_ITEM(-2000, 2000, 1),
 159         3, 3, TLV_DB_SCALE_ITEM(3000, 0, 0),
 160 );
 161
 162 static const struct snd_kcontrol_new max9867_snd_controls[] = {
 163         SOC_DOUBLE_R_TLV("Master Playback Volume", MAX9867_LEFTVOL,
 164                         MAX9867_RIGHTVOL, 0, 40, 1, max9867_master_tlv),
 165         SOC_DOUBLE_R_TLV("Line Capture Volume", MAX9867_LEFTLINELVL,
 166                         MAX9867_RIGHTLINELVL, 0, 15, 1, max9867_line_tlv),
 167         SOC_DOUBLE_R_TLV("Mic Capture Volume", MAX9867_LEFTMICGAIN,
 168                         MAX9867_RIGHTMICGAIN, 0, 20, 1, max9867_mic_tlv),
 169         SOC_DOUBLE_R_TLV("Mic Boost Capture Volume", MAX9867_LEFTMICGAIN,
 170                         MAX9867_RIGHTMICGAIN, 5, 3, 0, max9867_micboost_tlv),
 171         SOC_SINGLE("Digital Sidetone Volume", MAX9867_SIDETONE, 0, 31, 1),
 172         SOC_SINGLE_TLV("Digital Playback Volume", MAX9867_DACLEVEL, 0, 15, 1,
 173                         max9867_dac_tlv),
 174         SOC_SINGLE_TLV("Digital Boost Playback Volume", MAX9867_DACLEVEL, 4, 3, 0,
 175                         max9867_dacboost_tlv),
 176         SOC_DOUBLE_TLV("Digital Capture Volume", MAX9867_ADCLEVEL, 4, 0, 15, 1,
 177                         max9867_adc_tlv),
 178         SOC_ENUM("Speaker Mode", max9867_spkmode),
 179         SOC_SINGLE("Volume Smoothing Switch", MAX9867_MODECONFIG, 6, 1, 0),
 180         SOC_SINGLE("Line ZC Switch", MAX9867_MODECONFIG, 5, 1, 0),
 181         SOC_ENUM_EXT("DSP Filter", max9867_filter, max9867_filter_get, max9867_filter_set),
 182         SOC_ENUM("ADC Filter", max9867_adc_filter),
 183         SOC_ENUM("DAC Filter", max9867_dac_filter),
 184         SOC_SINGLE("Mono Playback Switch", MAX9867_IFC1B, 3, 1, 0),
 185 };
 186
 187 /* Input mixer */
 188 static const struct snd_kcontrol_new max9867_input_mixer_controls[] = {
 189         SOC_DAPM_DOUBLE("Line Capture Switch", MAX9867_INPUTCONFIG, 7, 5, 1, 0),
 190         SOC_DAPM_DOUBLE("Mic Capture Switch", MAX9867_INPUTCONFIG, 6, 4, 1, 0),
 191 };
 192
 193 /* Output mixer */
 194 static const struct snd_kcontrol_new max9867_output_mixer_controls[] = {
 195         SOC_DAPM_DOUBLE_R("Line Bypass Switch",
 196                           MAX9867_LEFTLINELVL, MAX9867_RIGHTLINELVL, 6, 1, 1),
 197 };
 198
 199 /* Sidetone mixer */
 200 static const struct snd_kcontrol_new max9867_sidetone_mixer_controls[] = {
 201         SOC_DAPM_DOUBLE("Sidetone Switch", MAX9867_SIDETONE, 6, 7, 1, 0),
 202 };
 203
 204 /* Line out switch */
 205 static const struct snd_kcontrol_new max9867_line_out_control =
 206         SOC_DAPM_DOUBLE_R("Switch",
 207                           MAX9867_LEFTVOL, MAX9867_RIGHTVOL, 6, 1, 1);
 208
 209 /* DMIC mux */
 210 static const char *const dmic_mux_text[] = {
 211         "ADC", "DMIC"
 212 };
 213 static SOC_ENUM_SINGLE_DECL(left_dmic_mux_enum,
 214                             MAX9867_MICCONFIG, 5, dmic_mux_text);
 215 static SOC_ENUM_SINGLE_DECL(right_dmic_mux_enum,
 216                             MAX9867_MICCONFIG, 4, dmic_mux_text);
 217 static const struct snd_kcontrol_new max9867_left_dmic_mux =
 218         SOC_DAPM_ENUM("DMICL Mux", left_dmic_mux_enum);
 219 static const struct snd_kcontrol_new max9867_right_dmic_mux =
 220         SOC_DAPM_ENUM("DMICR Mux", right_dmic_mux_enum);
 221
 222 static const struct snd_soc_dapm_widget max9867_dapm_widgets[] = {
 223         SND_SOC_DAPM_INPUT("MICL"),
 224         SND_SOC_DAPM_INPUT("MICR"),
 225         SND_SOC_DAPM_INPUT("DMICL"),
 226         SND_SOC_DAPM_INPUT("DMICR"),
 227         SND_SOC_DAPM_INPUT("LINL"),
 228         SND_SOC_DAPM_INPUT("LINR"),
 229
 230         SND_SOC_DAPM_PGA("Left Line Input", SND_SOC_NOPM, 0, 0, NULL, 0),
 231         SND_SOC_DAPM_PGA("Right Line Input", SND_SOC_NOPM, 0, 0, NULL, 0),
 232         SND_SOC_DAPM_MIXER_NAMED_CTL("Input Mixer", SND_SOC_NOPM, 0, 0,
 233                                      max9867_input_mixer_controls,
 234                                      ARRAY_SIZE(max9867_input_mixer_controls)),
 235         SND_SOC_DAPM_MUX("DMICL Mux", SND_SOC_NOPM, 0, 0,
 236                          &max9867_left_dmic_mux),
 237         SND_SOC_DAPM_MUX("DMICR Mux", SND_SOC_NOPM, 0, 0,
 238                          &max9867_right_dmic_mux),
 239         SND_SOC_DAPM_ADC_E("ADCL", "HiFi Capture", SND_SOC_NOPM, 0, 0,
 240                            max9867_adc_dac_event,
 241                            SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 242         SND_SOC_DAPM_ADC_E("ADCR", "HiFi Capture", SND_SOC_NOPM, 0, 0,
 243                            max9867_adc_dac_event,
 244                            SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 245
 246         SND_SOC_DAPM_MIXER("Digital", SND_SOC_NOPM, 0, 0,
 247                            max9867_sidetone_mixer_controls,
 248                            ARRAY_SIZE(max9867_sidetone_mixer_controls)),
 249         SND_SOC_DAPM_MIXER_NAMED_CTL("Output Mixer", SND_SOC_NOPM, 0, 0,
 250                                      max9867_output_mixer_controls,
 251                                      ARRAY_SIZE(max9867_output_mixer_controls)),
 252         SND_SOC_DAPM_DAC_E("DACL", "HiFi Playback", SND_SOC_NOPM, 0, 0,
 253                            max9867_adc_dac_event,
 254                            SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 255         SND_SOC_DAPM_DAC_E("DACR", "HiFi Playback", SND_SOC_NOPM, 0, 0,
 256                            max9867_adc_dac_event,
 257                            SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 258         SND_SOC_DAPM_SWITCH("Master Playback", SND_SOC_NOPM, 0, 0,
 259                             &max9867_line_out_control),
 260         SND_SOC_DAPM_OUTPUT("LOUT"),
 261         SND_SOC_DAPM_OUTPUT("ROUT"),
 262 };
 263
 264 static const struct snd_soc_dapm_route max9867_audio_map[] = {
 265         {"Left Line Input", NULL, "LINL"},
 266         {"Right Line Input", NULL, "LINR"},
 267         {"Input Mixer", "Mic Capture Switch", "MICL"},
 268         {"Input Mixer", "Mic Capture Switch", "MICR"},
 269         {"Input Mixer", "Line Capture Switch", "Left Line Input"},
 270         {"Input Mixer", "Line Capture Switch", "Right Line Input"},
 271         {"DMICL Mux", "DMIC", "DMICL"},
 272         {"DMICR Mux", "DMIC", "DMICR"},
 273         {"DMICL Mux", "ADC", "Input Mixer"},
 274         {"DMICR Mux", "ADC", "Input Mixer"},
 275         {"ADCL", NULL, "DMICL Mux"},
 276         {"ADCR", NULL, "DMICR Mux"},
 277
 278         {"Digital", "Sidetone Switch", "ADCL"},
 279         {"Digital", "Sidetone Switch", "ADCR"},
 280         {"DACL", NULL, "Digital"},
 281         {"DACR", NULL, "Digital"},
 282
 283         {"Output Mixer", "Line Bypass Switch", "Left Line Input"},
 284         {"Output Mixer", "Line Bypass Switch", "Right Line Input"},
 285         {"Output Mixer", NULL, "DACL"},
 286         {"Output Mixer", NULL, "DACR"},
 287         {"Master Playback", "Switch", "Output Mixer"},
 288         {"LOUT", NULL, "Master Playback"},
 289         {"ROUT", NULL, "Master Playback"},
 290 };
 291
 292 static const unsigned int max9867_rates_44k1[] = {
 293         11025, 22050, 44100,
 294 };
 295
 296 static const struct snd_pcm_hw_constraint_list max9867_constraints_44k1 = {
 297         .list = max9867_rates_44k1,
 298         .count = ARRAY_SIZE(max9867_rates_44k1),
 299 };
 300
 301 static const unsigned int max9867_rates_48k[] = {
 302         8000, 16000, 32000, 48000,
 303 };
 304
 305 static const struct snd_pcm_hw_constraint_list max9867_constraints_48k = {
 306         .list = max9867_rates_48k,
 307         .count = ARRAY_SIZE(max9867_rates_48k),
 308 };
 309
 310 static int max9867_startup(struct snd_pcm_substream *substream,
 311                            struct snd_soc_dai *dai)
 312 {
 313         struct max9867_priv *max9867 =
 314                 snd_soc_component_get_drvdata(dai->component);
 315
 316         if (max9867->constraints)
 317                 snd_pcm_hw_constraint_list(substream->runtime, 0,
 318                         SNDRV_PCM_HW_PARAM_RATE, max9867->constraints);
 319
 320         return 0;
 321 }
 322
 323 static int max9867_dai_hw_params(struct snd_pcm_substream *substream,
 324                 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 325 {
 326         int value;
 327         unsigned long int rate, ratio;
 328         struct snd_soc_component *component = dai->component;
 329         struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
 330         unsigned int ni = DIV_ROUND_CLOSEST_ULL(96ULL * 0x10000 * params_rate(params),
 331                                                 max9867->pclk);
 332
 333         /* set up the ni value */
 334         regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH,
 335                 MAX9867_NI_HIGH_MASK, (0xFF00 & ni) >> 8);
 336         regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW,
 337                 MAX9867_NI_LOW_MASK, 0x00FF & ni);
 338         if (max9867->master) {
 339                 if (max9867->dsp_a) {
 340                         value = MAX9867_IFC1B_48X;
 341                 } else {
 342                         rate = params_rate(params) * 2 * params_width(params);
 343                         ratio = max9867->pclk / rate;
 344                         switch (params_width(params)) {
 345                         case 8:
 346                         case 16:
 347                                 switch (ratio) {
 348                                 case 2:
 349                                         value = MAX9867_IFC1B_PCLK_2;
 350                                         break;
 351                                 case 4:
 352                                         value = MAX9867_IFC1B_PCLK_4;
 353                                         break;
 354                                 case 8:
 355                                         value = MAX9867_IFC1B_PCLK_8;
 356                                         break;
 357                                 case 16:
 358                                         value = MAX9867_IFC1B_PCLK_16;
 359                                         break;
 360                                 default:
 361                                         return -EINVAL;
 362                                 }
 363                                 break;
 364                         case 24:
 365                                 value = MAX9867_IFC1B_48X;
 366                                 break;
 367                         case 32:
 368                                 value = MAX9867_IFC1B_64X;
 369                                 break;
 370                         default:
 371                                 return -EINVAL;
 372                         }
 373                 }
 374                 regmap_update_bits(max9867->regmap, MAX9867_IFC1B,
 375                         MAX9867_IFC1B_BCLK_MASK, value);
 376         } else {
 377                 /*
 378                  * digital pll locks on to any externally supplied LRCLK signal
 379                  * and also enable rapid lock mode.
 380                  */
 381                 regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW,
 382                         MAX9867_RAPID_LOCK, MAX9867_RAPID_LOCK);
 383                 regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH,
 384                         MAX9867_PLL, MAX9867_PLL);
 385         }
 386         return 0;
 387 }
 388
 389 static int max9867_mute(struct snd_soc_dai *dai, int mute, int direction)
 390 {
 391         struct snd_soc_component *component = dai->component;
 392         struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
 393
 394         return regmap_update_bits(max9867->regmap, MAX9867_DACLEVEL,
 395                                   1 << 6, !!mute << 6);
 396 }
 397
 398 static int max9867_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 399                 int clk_id, unsigned int freq, int dir)
 400 {
 401         struct snd_soc_component *component = codec_dai->component;
 402         struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
 403         int value = 0;
 404
 405         /* Set the prescaler based on the master clock frequency*/
 406         if (freq >= 10000000 && freq <= 20000000) {
 407                 value |= MAX9867_PSCLK_10_20;
 408                 max9867->pclk = freq;
 409         } else if (freq >= 20000000 && freq <= 40000000) {
 410                 value |= MAX9867_PSCLK_20_40;
 411                 max9867->pclk = freq / 2;
 412         } else if (freq >= 40000000 && freq <= 60000000) {
 413                 value |= MAX9867_PSCLK_40_60;
 414                 max9867->pclk = freq / 4;
 415         } else {
 416                 dev_err(component->dev,
 417                         "Invalid clock frequency %uHz (required 10-60MHz)\n",
 418                         freq);
 419                 return -EINVAL;
 420         }
 421         if (freq % 48000 == 0)
 422                 max9867->constraints = &max9867_constraints_48k;
 423         else if (freq % 44100 == 0)
 424                 max9867->constraints = &max9867_constraints_44k1;
 425         else
 426                 dev_warn(component->dev,
 427                          "Unable to set exact rate with %uHz clock frequency\n",
 428                          freq);
 429         max9867->sysclk = freq;
 430         value = value << MAX9867_PSCLK_SHIFT;
 431         /* exact integer mode is not supported */
 432         value &= ~MAX9867_FREQ_MASK;
 433         regmap_update_bits(max9867->regmap, MAX9867_SYSCLK,
 434                         MAX9867_PSCLK_MASK, value);
 435         return 0;
 436 }
 437
 438 static int max9867_dai_set_fmt(struct snd_soc_dai *codec_dai,
 439                 unsigned int fmt)
 440 {
 441         struct snd_soc_component *component = codec_dai->component;
 442         struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
 443         u8 iface1A, iface1B;
 444
 445         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 446         case SND_SOC_DAIFMT_CBM_CFM:
 447                 max9867->master = true;
 448                 iface1A = MAX9867_MASTER;
 449                 iface1B = MAX9867_IFC1B_48X;
 450                 break;
 451         case SND_SOC_DAIFMT_CBS_CFS:
 452                 max9867->master = false;
 453                 iface1A = iface1B = 0;
 454                 break;
 455         default:
 456                 return -EINVAL;
 457         }
 458
 459         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 460         case SND_SOC_DAIFMT_I2S:
 461                 max9867->dsp_a = false;
 462                 iface1A |= MAX9867_I2S_DLY;
 463                 break;
 464         case SND_SOC_DAIFMT_DSP_A:
 465                 max9867->dsp_a = true;
 466                 iface1A |= MAX9867_TDM_MODE | MAX9867_SDOUT_HIZ;
 467                 break;
 468         default:
 469                 return -EINVAL;
 470         }
 471
 472         /* Clock inversion bits, BCI and WCI */
 473         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 474         case SND_SOC_DAIFMT_NB_NF:
 475                 break;
 476         case SND_SOC_DAIFMT_IB_IF:
 477                 iface1A |= MAX9867_WCI_MODE | MAX9867_BCI_MODE;
 478                 break;
 479         case SND_SOC_DAIFMT_IB_NF:
 480                 iface1A |= MAX9867_BCI_MODE;
 481                 break;
 482         case SND_SOC_DAIFMT_NB_IF:
 483                 iface1A |= MAX9867_WCI_MODE;
 484                 break;
 485         default:
 486                 return -EINVAL;
 487         }
 488
 489         regmap_write(max9867->regmap, MAX9867_IFC1A, iface1A);
 490         regmap_update_bits(max9867->regmap, MAX9867_IFC1B,
 491                            MAX9867_IFC1B_BCLK_MASK, iface1B);
 492
 493         return 0;
 494 }
 495
 496 static const struct snd_soc_dai_ops max9867_dai_ops = {
 497         .set_sysclk     = max9867_set_dai_sysclk,
 498         .set_fmt        = max9867_dai_set_fmt,
 499         .mute_stream    = max9867_mute,
 500         .startup        = max9867_startup,
 501         .hw_params      = max9867_dai_hw_params,
 502         .no_capture_mute = 1,
 503 };
 504
 505 static struct snd_soc_dai_driver max9867_dai[] = {
 506         {
 507         .name = "max9867-aif1",
 508         .playback = {
 509                 .stream_name = "HiFi Playback",
 510                 .channels_min = 2,
 511                 .channels_max = 2,
 512                 .rates = SNDRV_PCM_RATE_8000_48000,
 513                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 514         },
 515         .capture = {
 516                 .stream_name = "HiFi Capture",
 517                 .channels_min = 2,
 518                 .channels_max = 2,
 519                 .rates = SNDRV_PCM_RATE_8000_48000,
 520                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 521         },
 522         .ops = &max9867_dai_ops,
 523         .symmetric_rates = 1,
 524         }
 525 };
 526
 527 #ifdef CONFIG_PM
 528 static int max9867_suspend(struct snd_soc_component *component)
 529 {
 530         snd_soc_component_force_bias_level(component, SND_SOC_BIAS_OFF);
 531
 532         return 0;
 533 }
 534
 535 static int max9867_resume(struct snd_soc_component *component)
 536 {
 537         snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY);
 538
 539         return 0;
 540 }
 541 #else
 542 #define max9867_suspend NULL
 543 #define max9867_resume  NULL
 544 #endif
 545
 546 static int max9867_set_bias_level(struct snd_soc_component *component,
 547                                   enum snd_soc_bias_level level)
 548 {
 549         int err;
 550         struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
 551
 552         switch (level) {
 553         case SND_SOC_BIAS_STANDBY:
 554                 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
 555                         err = regcache_sync(max9867->regmap);
 556                         if (err)
 557                                 return err;
 558
 559                         err = regmap_write(max9867->regmap,
 560                                            MAX9867_PWRMAN, 0xff);
 561                         if (err)
 562                                 return err;
 563                 }
 564                 break;
 565         case SND_SOC_BIAS_OFF:
 566                 err = regmap_write(max9867->regmap, MAX9867_PWRMAN, 0);
 567                 if (err)
 568                         return err;
 569
 570                 regcache_mark_dirty(max9867->regmap);
 571                 break;
 572         default:
 573                 break;
 574         }
 575
 576         return 0;
 577 }
 578
 579 static const struct snd_soc_component_driver max9867_component = {
 580         .controls               = max9867_snd_controls,
 581         .num_controls           = ARRAY_SIZE(max9867_snd_controls),
 582         .dapm_routes            = max9867_audio_map,
 583         .num_dapm_routes        = ARRAY_SIZE(max9867_audio_map),
 584         .dapm_widgets           = max9867_dapm_widgets,
 585         .num_dapm_widgets       = ARRAY_SIZE(max9867_dapm_widgets),
 586         .suspend                = max9867_suspend,
 587         .resume                 = max9867_resume,
 588         .set_bias_level         = max9867_set_bias_level,
 589         .idle_bias_on           = 1,
 590         .use_pmdown_time        = 1,
 591         .endianness             = 1,
 592         .non_legacy_dai_naming  = 1,
 593 };
 594
 595 static bool max9867_volatile_register(struct device *dev, unsigned int reg)
 596 {
 597         switch (reg) {
 598         case MAX9867_STATUS:
 599         case MAX9867_JACKSTATUS:
 600         case MAX9867_AUXHIGH:
 601         case MAX9867_AUXLOW:
 602                 return true;
 603         default:
 604                 return false;
 605         }
 606 }
 607
 608 static const struct regmap_config max9867_regmap = {
 609         .reg_bits       = 8,
 610         .val_bits       = 8,
 611         .max_register   = MAX9867_REVISION,
 612         .volatile_reg   = max9867_volatile_register,
 613         .cache_type     = REGCACHE_RBTREE,
 614 };
 615
 616 static int max9867_i2c_probe(struct i2c_client *i2c,
 617                 const struct i2c_device_id *id)
 618 {
 619         struct max9867_priv *max9867;
 620         int ret, reg;
 621
 622         max9867 = devm_kzalloc(&i2c->dev, sizeof(*max9867), GFP_KERNEL);
 623         if (!max9867)
 624                 return -ENOMEM;
 625
 626         i2c_set_clientdata(i2c, max9867);
 627         max9867->regmap = devm_regmap_init_i2c(i2c, &max9867_regmap);
 628         if (IS_ERR(max9867->regmap)) {
 629                 ret = PTR_ERR(max9867->regmap);
 630                 dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
 631                 return ret;
 632         }
 633         ret = regmap_read(max9867->regmap, MAX9867_REVISION, &reg);
 634         if (ret < 0) {
 635                 dev_err(&i2c->dev, "Failed to read: %d\n", ret);
 636                 return ret;
 637         }
 638         dev_info(&i2c->dev, "device revision: %x\n", reg);
 639         ret = devm_snd_soc_register_component(&i2c->dev, &max9867_component,
 640                         max9867_dai, ARRAY_SIZE(max9867_dai));
 641         if (ret < 0)
 642                 dev_err(&i2c->dev, "Failed to register component: %d\n", ret);
 643         return ret;
 644 }
 645
 646 static const struct i2c_device_id max9867_i2c_id[] = {
 647         { "max9867", 0 },
 648         { }
 649 };
 650 MODULE_DEVICE_TABLE(i2c, max9867_i2c_id);
 651
 652 #ifdef CONFIG_OF
 653 static const struct of_device_id max9867_of_match[] = {
 654         { .compatible = "maxim,max9867", },
 655         { }
 656 };
 657 MODULE_DEVICE_TABLE(of, max9867_of_match);
 658 #endif
 659
 660 static struct i2c_driver max9867_i2c_driver = {
 661         .driver = {
 662                 .name = "max9867",
 663                 .of_match_table = of_match_ptr(max9867_of_match),
 664         },
 665         .probe  = max9867_i2c_probe,
 666         .id_table = max9867_i2c_id,
 667 };
 668
 669 module_i2c_driver(max9867_i2c_driver);
 670
 671 MODULE_AUTHOR("Ladislav Michl <ladis@linux-mips.org>");
 672 MODULE_DESCRIPTION("ASoC MAX9867 driver");
 673 MODULE_LICENSE("GPL");