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/clk.h>
  10 #include <linux/delay.h>
  11 #include <linux/i2c.h>
  12 #include <linux/module.h>
  13 #include <linux/regmap.h>
  14 #include <sound/pcm_params.h>
  15 #include <sound/soc.h>
  16 #include <sound/tlv.h>
  17 #include "max9867.h"
  18
  19 struct max9867_priv {
  20         struct clk *mclk;
  21         struct regmap *regmap;
  22         const struct snd_pcm_hw_constraint_list *constraints;
  23         unsigned int sysclk, pclk;
  24         bool provider, dsp_a;
  25         unsigned int adc_dac_active;
  26 };
  27
  28 static const char *const max9867_spmode[] = {
  29         "Stereo Diff", "Mono Diff",
  30         "Stereo Cap", "Mono Cap",
  31         "Stereo Single", "Mono Single",
  32         "Stereo Single Fast", "Mono Single Fast"
  33 };
  34 static const char *const max9867_filter_text[] = {"IIR", "FIR"};
  35
  36 static const char *const max9867_adc_dac_filter_text[] = {
  37         "Disabled",
  38         "Elliptical/16/256",
  39         "Butterworth/16/500",
  40         "Elliptical/8/256",
  41         "Butterworth/8/500",
  42         "Butterworth/8-24"
  43 };
  44
  45 enum max9867_adc_dac {
  46         MAX9867_ADC_LEFT,
  47         MAX9867_ADC_RIGHT,
  48         MAX9867_DAC_LEFT,
  49         MAX9867_DAC_RIGHT,
  50 };
  51
  52 static int max9867_adc_dac_event(struct snd_soc_dapm_widget *w,
  53         struct snd_kcontrol *kcontrol, int event)
  54 {
  55         struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
  56         struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
  57         enum max9867_adc_dac adc_dac;
  58
  59         if (!snd_soc_dapm_widget_name_cmp(w, "ADCL"))
  60                 adc_dac = MAX9867_ADC_LEFT;
  61         else if (!snd_soc_dapm_widget_name_cmp(w, "ADCR"))
  62                 adc_dac = MAX9867_ADC_RIGHT;
  63         else if (!snd_soc_dapm_widget_name_cmp(w, "DACL"))
  64                 adc_dac = MAX9867_DAC_LEFT;
  65         else if (!snd_soc_dapm_widget_name_cmp(w, "DACR"))
  66                 adc_dac = MAX9867_DAC_RIGHT;
  67         else
  68                 return 0;
  69
  70         if (SND_SOC_DAPM_EVENT_ON(event))
  71                 max9867->adc_dac_active |= BIT(adc_dac);
  72         else if (SND_SOC_DAPM_EVENT_OFF(event))
  73                 max9867->adc_dac_active &= ~BIT(adc_dac);
  74
  75         return 0;
  76 }
  77
  78 static int max9867_filter_get(struct snd_kcontrol *kcontrol,
  79                               struct snd_ctl_elem_value *ucontrol)
  80 {
  81         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
  82         struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
  83         unsigned int reg;
  84         int ret;
  85
  86         ret = regmap_read(max9867->regmap, MAX9867_CODECFLTR, &reg);
  87         if (ret)
  88                 return -EINVAL;
  89
  90         if (reg & MAX9867_CODECFLTR_MODE)
  91                 ucontrol->value.enumerated.item[0] = 1;
  92         else
  93                 ucontrol->value.enumerated.item[0] = 0;
  94
  95         return 0;
  96 }
  97
  98 static int max9867_filter_set(struct snd_kcontrol *kcontrol,
  99                               struct snd_ctl_elem_value *ucontrol)
 100 {
 101         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 102         struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
 103         unsigned int reg, mode = ucontrol->value.enumerated.item[0];
 104         int ret;
 105
 106         if (mode > 1)
 107                 return -EINVAL;
 108
 109         /* don't allow change if ADC/DAC active */
 110         if (max9867->adc_dac_active)
 111                 return -EBUSY;
 112
 113         /* read current filter mode */
 114         ret = regmap_read(max9867->regmap, MAX9867_CODECFLTR, &reg);
 115         if (ret)
 116                 return -EINVAL;
 117
 118         if (mode)
 119                 mode = MAX9867_CODECFLTR_MODE;
 120
 121         /* check if change is needed */
 122         if ((reg & MAX9867_CODECFLTR_MODE) == mode)
 123                 return 0;
 124
 125         /* shutdown codec before switching filter mode */
 126         regmap_update_bits(max9867->regmap, MAX9867_PWRMAN,
 127                 MAX9867_PWRMAN_SHDN, 0);
 128
 129         /* switch filter mode */
 130         regmap_update_bits(max9867->regmap, MAX9867_CODECFLTR,
 131                 MAX9867_CODECFLTR_MODE, mode);
 132
 133         /* out of shutdown now */
 134         regmap_update_bits(max9867->regmap, MAX9867_PWRMAN,
 135                 MAX9867_PWRMAN_SHDN, MAX9867_PWRMAN_SHDN);
 136
 137         return 0;
 138 }
 139
 140 static SOC_ENUM_SINGLE_EXT_DECL(max9867_filter, max9867_filter_text);
 141 static SOC_ENUM_SINGLE_DECL(max9867_dac_filter, MAX9867_CODECFLTR, 0,
 142         max9867_adc_dac_filter_text);
 143 static SOC_ENUM_SINGLE_DECL(max9867_adc_filter, MAX9867_CODECFLTR, 4,
 144         max9867_adc_dac_filter_text);
 145 static SOC_ENUM_SINGLE_DECL(max9867_spkmode, MAX9867_MODECONFIG, 0,
 146         max9867_spmode);
 147 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(max9867_master_tlv,
 148          0,  2, TLV_DB_SCALE_ITEM(-8600, 200, 1),
 149          3, 17, TLV_DB_SCALE_ITEM(-7800, 400, 0),
 150         18, 25, TLV_DB_SCALE_ITEM(-2000, 200, 0),
 151         26, 34, TLV_DB_SCALE_ITEM( -500, 100, 0),
 152         35, 40, TLV_DB_SCALE_ITEM(  350,  50, 0),
 153 );
 154 static DECLARE_TLV_DB_SCALE(max9867_mic_tlv, 0, 100, 0);
 155 static DECLARE_TLV_DB_SCALE(max9867_line_tlv, -600, 200, 0);
 156 static DECLARE_TLV_DB_SCALE(max9867_adc_tlv, -1200, 100, 0);
 157 static DECLARE_TLV_DB_SCALE(max9867_dac_tlv, -1500, 100, 0);
 158 static DECLARE_TLV_DB_SCALE(max9867_dacboost_tlv, 0, 600, 0);
 159 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(max9867_micboost_tlv,
 160         0, 2, TLV_DB_SCALE_ITEM(-2000, 2000, 1),
 161         3, 3, TLV_DB_SCALE_ITEM(3000, 0, 0),
 162 );
 163
 164 static const struct snd_kcontrol_new max9867_snd_controls[] = {
 165         SOC_DOUBLE_R_TLV("Master Playback Volume", MAX9867_LEFTVOL,
 166                         MAX9867_RIGHTVOL, 0, 40, 1, max9867_master_tlv),
 167         SOC_DOUBLE_R_TLV("Line Capture Volume", MAX9867_LEFTLINELVL,
 168                         MAX9867_RIGHTLINELVL, 0, 15, 1, max9867_line_tlv),
 169         SOC_DOUBLE_R_TLV("Mic Capture Volume", MAX9867_LEFTMICGAIN,
 170                         MAX9867_RIGHTMICGAIN, 0, 20, 1, max9867_mic_tlv),
 171         SOC_DOUBLE_R_TLV("Mic Boost Capture Volume", MAX9867_LEFTMICGAIN,
 172                         MAX9867_RIGHTMICGAIN, 5, 3, 0, max9867_micboost_tlv),
 173         SOC_SINGLE("Digital Sidetone Volume", MAX9867_SIDETONE, 0, 31, 1),
 174         SOC_SINGLE_TLV("Digital Playback Volume", MAX9867_DACLEVEL, 0, 15, 1,
 175                         max9867_dac_tlv),
 176         SOC_SINGLE_TLV("Digital Boost Playback Volume", MAX9867_DACLEVEL, 4, 3, 0,
 177                         max9867_dacboost_tlv),
 178         SOC_DOUBLE_TLV("Digital Capture Volume", MAX9867_ADCLEVEL, 4, 0, 15, 1,
 179                         max9867_adc_tlv),
 180         SOC_ENUM("Speaker Mode", max9867_spkmode),
 181         SOC_SINGLE("Volume Smoothing Switch", MAX9867_MODECONFIG, 6, 1, 0),
 182         SOC_SINGLE("Line ZC Switch", MAX9867_MODECONFIG, 5, 1, 0),
 183         SOC_ENUM_EXT("DSP Filter", max9867_filter, max9867_filter_get, max9867_filter_set),
 184         SOC_ENUM("ADC Filter", max9867_adc_filter),
 185         SOC_ENUM("DAC Filter", max9867_dac_filter),
 186         SOC_SINGLE("Mono Playback Switch", MAX9867_IFC1B, 3, 1, 0),
 187 };
 188
 189 /* Input mixer */
 190 static const struct snd_kcontrol_new max9867_input_mixer_controls[] = {
 191         SOC_DAPM_DOUBLE("Line Capture Switch", MAX9867_INPUTCONFIG, 7, 5, 1, 0),
 192         SOC_DAPM_DOUBLE("Mic Capture Switch", MAX9867_INPUTCONFIG, 6, 4, 1, 0),
 193 };
 194
 195 /* Output mixer */
 196 static const struct snd_kcontrol_new max9867_output_mixer_controls[] = {
 197         SOC_DAPM_DOUBLE_R("Line Bypass Switch",
 198                           MAX9867_LEFTLINELVL, MAX9867_RIGHTLINELVL, 6, 1, 1),
 199 };
 200
 201 /* Sidetone mixer */
 202 static const struct snd_kcontrol_new max9867_sidetone_mixer_controls[] = {
 203         SOC_DAPM_DOUBLE("Sidetone Switch", MAX9867_SIDETONE, 6, 7, 1, 0),
 204 };
 205
 206 /* Line out switch */
 207 static const struct snd_kcontrol_new max9867_line_out_control =
 208         SOC_DAPM_DOUBLE_R("Switch",
 209                           MAX9867_LEFTVOL, MAX9867_RIGHTVOL, 6, 1, 1);
 210
 211 /* DMIC mux */
 212 static const char *const dmic_mux_text[] = {
 213         "ADC", "DMIC"
 214 };
 215 static SOC_ENUM_SINGLE_DECL(left_dmic_mux_enum,
 216                             MAX9867_MICCONFIG, 5, dmic_mux_text);
 217 static SOC_ENUM_SINGLE_DECL(right_dmic_mux_enum,
 218                             MAX9867_MICCONFIG, 4, dmic_mux_text);
 219 static const struct snd_kcontrol_new max9867_left_dmic_mux =
 220         SOC_DAPM_ENUM("DMICL Mux", left_dmic_mux_enum);
 221 static const struct snd_kcontrol_new max9867_right_dmic_mux =
 222         SOC_DAPM_ENUM("DMICR Mux", right_dmic_mux_enum);
 223
 224 static const struct snd_soc_dapm_widget max9867_dapm_widgets[] = {
 225         SND_SOC_DAPM_INPUT("MICL"),
 226         SND_SOC_DAPM_INPUT("MICR"),
 227         SND_SOC_DAPM_INPUT("DMICL"),
 228         SND_SOC_DAPM_INPUT("DMICR"),
 229         SND_SOC_DAPM_INPUT("LINL"),
 230         SND_SOC_DAPM_INPUT("LINR"),
 231
 232         SND_SOC_DAPM_PGA("Left Line Input", SND_SOC_NOPM, 0, 0, NULL, 0),
 233         SND_SOC_DAPM_PGA("Right Line Input", SND_SOC_NOPM, 0, 0, NULL, 0),
 234         SND_SOC_DAPM_MIXER_NAMED_CTL("Input Mixer", SND_SOC_NOPM, 0, 0,
 235                                      max9867_input_mixer_controls,
 236                                      ARRAY_SIZE(max9867_input_mixer_controls)),
 237         SND_SOC_DAPM_MUX("DMICL Mux", SND_SOC_NOPM, 0, 0,
 238                          &max9867_left_dmic_mux),
 239         SND_SOC_DAPM_MUX("DMICR Mux", SND_SOC_NOPM, 0, 0,
 240                          &max9867_right_dmic_mux),
 241         SND_SOC_DAPM_ADC_E("ADCL", "HiFi Capture", SND_SOC_NOPM, 0, 0,
 242                            max9867_adc_dac_event,
 243                            SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 244         SND_SOC_DAPM_ADC_E("ADCR", "HiFi Capture", SND_SOC_NOPM, 0, 0,
 245                            max9867_adc_dac_event,
 246                            SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 247
 248         SND_SOC_DAPM_MIXER("Digital", SND_SOC_NOPM, 0, 0,
 249                            max9867_sidetone_mixer_controls,
 250                            ARRAY_SIZE(max9867_sidetone_mixer_controls)),
 251         SND_SOC_DAPM_MIXER_NAMED_CTL("Output Mixer", SND_SOC_NOPM, 0, 0,
 252                                      max9867_output_mixer_controls,
 253                                      ARRAY_SIZE(max9867_output_mixer_controls)),
 254         SND_SOC_DAPM_DAC_E("DACL", "HiFi Playback", SND_SOC_NOPM, 0, 0,
 255                            max9867_adc_dac_event,
 256                            SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 257         SND_SOC_DAPM_DAC_E("DACR", "HiFi Playback", SND_SOC_NOPM, 0, 0,
 258                            max9867_adc_dac_event,
 259                            SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 260         SND_SOC_DAPM_SWITCH("Master Playback", SND_SOC_NOPM, 0, 0,
 261                             &max9867_line_out_control),
 262         SND_SOC_DAPM_OUTPUT("LOUT"),
 263         SND_SOC_DAPM_OUTPUT("ROUT"),
 264 };
 265
 266 static const struct snd_soc_dapm_route max9867_audio_map[] = {
 267         {"Left Line Input", NULL, "LINL"},
 268         {"Right Line Input", NULL, "LINR"},
 269         {"Input Mixer", "Mic Capture Switch", "MICL"},
 270         {"Input Mixer", "Mic Capture Switch", "MICR"},
 271         {"Input Mixer", "Line Capture Switch", "Left Line Input"},
 272         {"Input Mixer", "Line Capture Switch", "Right Line Input"},
 273         {"DMICL Mux", "DMIC", "DMICL"},
 274         {"DMICR Mux", "DMIC", "DMICR"},
 275         {"DMICL Mux", "ADC", "Input Mixer"},
 276         {"DMICR Mux", "ADC", "Input Mixer"},
 277         {"ADCL", NULL, "DMICL Mux"},
 278         {"ADCR", NULL, "DMICR Mux"},
 279
 280         {"Digital", "Sidetone Switch", "ADCL"},
 281         {"Digital", "Sidetone Switch", "ADCR"},
 282         {"DACL", NULL, "Digital"},
 283         {"DACR", NULL, "Digital"},
 284
 285         {"Output Mixer", "Line Bypass Switch", "Left Line Input"},
 286         {"Output Mixer", "Line Bypass Switch", "Right Line Input"},
 287         {"Output Mixer", NULL, "DACL"},
 288         {"Output Mixer", NULL, "DACR"},
 289         {"Master Playback", "Switch", "Output Mixer"},
 290         {"LOUT", NULL, "Master Playback"},
 291         {"ROUT", NULL, "Master Playback"},
 292 };
 293
 294 static const unsigned int max9867_rates_44k1[] = {
 295         11025, 22050, 44100,
 296 };
 297
 298 static const struct snd_pcm_hw_constraint_list max9867_constraints_44k1 = {
 299         .list = max9867_rates_44k1,
 300         .count = ARRAY_SIZE(max9867_rates_44k1),
 301 };
 302
 303 static const unsigned int max9867_rates_48k[] = {
 304         8000, 16000, 32000, 48000,
 305 };
 306
 307 static const struct snd_pcm_hw_constraint_list max9867_constraints_48k = {
 308         .list = max9867_rates_48k,
 309         .count = ARRAY_SIZE(max9867_rates_48k),
 310 };
 311
 312 static int max9867_startup(struct snd_pcm_substream *substream,
 313                            struct snd_soc_dai *dai)
 314 {
 315         struct max9867_priv *max9867 =
 316                 snd_soc_component_get_drvdata(dai->component);
 317
 318         if (max9867->constraints)
 319                 snd_pcm_hw_constraint_list(substream->runtime, 0,
 320                         SNDRV_PCM_HW_PARAM_RATE, max9867->constraints);
 321
 322         return 0;
 323 }
 324
 325 static int max9867_dai_hw_params(struct snd_pcm_substream *substream,
 326                 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 327 {
 328         int value, freq = 0;
 329         unsigned long int rate, ratio;
 330         struct snd_soc_component *component = dai->component;
 331         struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
 332         unsigned int ni = DIV_ROUND_CLOSEST_ULL(96ULL * 0x10000 * params_rate(params),
 333                                                 max9867->pclk);
 334
 335         /* set up the ni value */
 336         regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH,
 337                 MAX9867_NI_HIGH_MASK, (0xFF00 & ni) >> 8);
 338         regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW,
 339                 MAX9867_NI_LOW_MASK, 0x00FF & ni);
 340         if (max9867->provider) {
 341                 if (max9867->dsp_a) {
 342                         value = MAX9867_IFC1B_48X;
 343                 } else {
 344                         rate = params_rate(params) * 2 * params_width(params);
 345                         ratio = max9867->pclk / rate;
 346                         switch (params_width(params)) {
 347                         case 8:
 348                         case 16:
 349                                 switch (ratio) {
 350                                 case 2:
 351                                         value = MAX9867_IFC1B_PCLK_2;
 352                                         break;
 353                                 case 4:
 354                                         value = MAX9867_IFC1B_PCLK_4;
 355                                         break;
 356                                 case 8:
 357                                         value = MAX9867_IFC1B_PCLK_8;
 358                                         break;
 359                                 case 16:
 360                                         value = MAX9867_IFC1B_PCLK_16;
 361                                         break;
 362                                 default:
 363                                         return -EINVAL;
 364                                 }
 365                                 break;
 366                         case 24:
 367                                 value = MAX9867_IFC1B_48X;
 368                                 break;
 369                         case 32:
 370                                 value = MAX9867_IFC1B_64X;
 371                                 break;
 372                         default:
 373                                 return -EINVAL;
 374                         }
 375                 }
 376                 regmap_update_bits(max9867->regmap, MAX9867_IFC1B,
 377                         MAX9867_IFC1B_BCLK_MASK, value);
 378
 379                 /* Exact integer mode available for 8kHz and 16kHz sample rates
 380                  * and certain PCLK (prescaled MCLK) values.
 381                  */
 382                 if (params_rate(params) == 8000 ||
 383                     params_rate(params) == 16000) {
 384                         switch (max9867->pclk) {
 385                         case 12000000:
 386                                 freq = 0x08;
 387                                 break;
 388                         case 13000000:
 389                                 freq = 0x0A;
 390                                 break;
 391                         case 16000000:
 392                                 freq = 0x0C;
 393                                 break;
 394                         case 19200000:
 395                                 freq = 0x0E;
 396                                 break;
 397                         }
 398                 }
 399                 if (freq && params_rate(params) == 16000)
 400                         freq++;
 401
 402                 /* If exact integer mode not available, the freq value
 403                  * remains zero, i.e. normal mode is used.
 404                  */
 405                 regmap_update_bits(max9867->regmap, MAX9867_SYSCLK,
 406                                    MAX9867_FREQ_MASK, freq);
 407         } else {
 408                 /*
 409                  * digital pll locks on to any externally supplied LRCLK signal
 410                  * and also enable rapid lock mode.
 411                  */
 412                 regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW,
 413                         MAX9867_RAPID_LOCK, MAX9867_RAPID_LOCK);
 414                 regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH,
 415                         MAX9867_PLL, MAX9867_PLL);
 416         }
 417         return 0;
 418 }
 419
 420 static int max9867_mute(struct snd_soc_dai *dai, int mute, int direction)
 421 {
 422         struct snd_soc_component *component = dai->component;
 423         struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
 424
 425         return regmap_update_bits(max9867->regmap, MAX9867_DACLEVEL,
 426                                   1 << 6, !!mute << 6);
 427 }
 428
 429 static int max9867_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 430                 int clk_id, unsigned int freq, int dir)
 431 {
 432         struct snd_soc_component *component = codec_dai->component;
 433         struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
 434         int value = 0;
 435
 436         /* Set the prescaler based on the master clock frequency*/
 437         if (freq >= 10000000 && freq <= 20000000) {
 438                 value |= MAX9867_PSCLK_10_20;
 439                 max9867->pclk = freq;
 440         } else if (freq >= 20000000 && freq <= 40000000) {
 441                 value |= MAX9867_PSCLK_20_40;
 442                 max9867->pclk = freq / 2;
 443         } else if (freq >= 40000000 && freq <= 60000000) {
 444                 value |= MAX9867_PSCLK_40_60;
 445                 max9867->pclk = freq / 4;
 446         } else {
 447                 dev_err(component->dev,
 448                         "Invalid clock frequency %uHz (required 10-60MHz)\n",
 449                         freq);
 450                 return -EINVAL;
 451         }
 452         if (freq % 48000 == 0)
 453                 max9867->constraints = &max9867_constraints_48k;
 454         else if (freq % 44100 == 0)
 455                 max9867->constraints = &max9867_constraints_44k1;
 456         else
 457                 dev_warn(component->dev,
 458                          "Unable to set exact rate with %uHz clock frequency\n",
 459                          freq);
 460         max9867->sysclk = freq;
 461         value = value << MAX9867_PSCLK_SHIFT;
 462         regmap_update_bits(max9867->regmap, MAX9867_SYSCLK,
 463                         MAX9867_PSCLK_MASK, value);
 464         return 0;
 465 }
 466
 467 static int max9867_dai_set_fmt(struct snd_soc_dai *codec_dai,
 468                 unsigned int fmt)
 469 {
 470         struct snd_soc_component *component = codec_dai->component;
 471         struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
 472         u8 iface1A, iface1B;
 473
 474         switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
 475         case SND_SOC_DAIFMT_CBP_CFP:
 476                 max9867->provider = true;
 477                 iface1A = MAX9867_MASTER;
 478                 iface1B = MAX9867_IFC1B_48X;
 479                 break;
 480         case SND_SOC_DAIFMT_CBC_CFC:
 481                 max9867->provider = false;
 482                 iface1A = iface1B = 0;
 483                 break;
 484         default:
 485                 return -EINVAL;
 486         }
 487
 488         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 489         case SND_SOC_DAIFMT_I2S:
 490                 max9867->dsp_a = false;
 491                 iface1A |= MAX9867_I2S_DLY;
 492                 break;
 493         case SND_SOC_DAIFMT_DSP_A:
 494                 max9867->dsp_a = true;
 495                 iface1A |= MAX9867_TDM_MODE | MAX9867_SDOUT_HIZ;
 496                 break;
 497         default:
 498                 return -EINVAL;
 499         }
 500
 501         /* Clock inversion bits, BCI and WCI */
 502         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 503         case SND_SOC_DAIFMT_NB_NF:
 504                 break;
 505         case SND_SOC_DAIFMT_IB_IF:
 506                 iface1A |= MAX9867_WCI_MODE | MAX9867_BCI_MODE;
 507                 break;
 508         case SND_SOC_DAIFMT_IB_NF:
 509                 iface1A |= MAX9867_BCI_MODE;
 510                 break;
 511         case SND_SOC_DAIFMT_NB_IF:
 512                 iface1A |= MAX9867_WCI_MODE;
 513                 break;
 514         default:
 515                 return -EINVAL;
 516         }
 517
 518         regmap_write(max9867->regmap, MAX9867_IFC1A, iface1A);
 519         regmap_update_bits(max9867->regmap, MAX9867_IFC1B,
 520                            MAX9867_IFC1B_BCLK_MASK, iface1B);
 521
 522         return 0;
 523 }
 524
 525 static const struct snd_soc_dai_ops max9867_dai_ops = {
 526         .set_sysclk     = max9867_set_dai_sysclk,
 527         .set_fmt        = max9867_dai_set_fmt,
 528         .mute_stream    = max9867_mute,
 529         .startup        = max9867_startup,
 530         .hw_params      = max9867_dai_hw_params,
 531         .no_capture_mute = 1,
 532 };
 533
 534 static struct snd_soc_dai_driver max9867_dai[] = {
 535         {
 536         .name = "max9867-aif1",
 537         .playback = {
 538                 .stream_name = "HiFi Playback",
 539                 .channels_min = 2,
 540                 .channels_max = 2,
 541                 .rates = SNDRV_PCM_RATE_8000_48000,
 542                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 543         },
 544         .capture = {
 545                 .stream_name = "HiFi Capture",
 546                 .channels_min = 2,
 547                 .channels_max = 2,
 548                 .rates = SNDRV_PCM_RATE_8000_48000,
 549                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 550         },
 551         .ops = &max9867_dai_ops,
 552         .symmetric_rate = 1,
 553         }
 554 };
 555
 556 #ifdef CONFIG_PM
 557 static int max9867_suspend(struct snd_soc_component *component)
 558 {
 559         snd_soc_component_force_bias_level(component, SND_SOC_BIAS_OFF);
 560
 561         return 0;
 562 }
 563
 564 static int max9867_resume(struct snd_soc_component *component)
 565 {
 566         snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY);
 567
 568         return 0;
 569 }
 570 #else
 571 #define max9867_suspend NULL
 572 #define max9867_resume  NULL
 573 #endif
 574
 575 static int max9867_set_bias_level(struct snd_soc_component *component,
 576                                   enum snd_soc_bias_level level)
 577 {
 578         int err;
 579         struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
 580
 581         switch (level) {
 582         case SND_SOC_BIAS_ON:
 583                 err = clk_prepare_enable(max9867->mclk);
 584                 if (err)
 585                         return err;
 586                 break;
 587         case SND_SOC_BIAS_STANDBY:
 588                 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
 589                         err = regcache_sync(max9867->regmap);
 590                         if (err)
 591                                 return err;
 592
 593                         err = regmap_write(max9867->regmap,
 594                                            MAX9867_PWRMAN, 0xff);
 595                         if (err)
 596                                 return err;
 597                 }
 598                 break;
 599         case SND_SOC_BIAS_OFF:
 600                 err = regmap_write(max9867->regmap, MAX9867_PWRMAN, 0);
 601                 if (err)
 602                         return err;
 603
 604                 regcache_mark_dirty(max9867->regmap);
 605                 clk_disable_unprepare(max9867->mclk);
 606                 break;
 607         default:
 608                 break;
 609         }
 610
 611         return 0;
 612 }
 613
 614 static const struct snd_soc_component_driver max9867_component = {
 615         .controls               = max9867_snd_controls,
 616         .num_controls           = ARRAY_SIZE(max9867_snd_controls),
 617         .dapm_routes            = max9867_audio_map,
 618         .num_dapm_routes        = ARRAY_SIZE(max9867_audio_map),
 619         .dapm_widgets           = max9867_dapm_widgets,
 620         .num_dapm_widgets       = ARRAY_SIZE(max9867_dapm_widgets),
 621         .suspend                = max9867_suspend,
 622         .resume                 = max9867_resume,
 623         .set_bias_level         = max9867_set_bias_level,
 624         .idle_bias_on           = 1,
 625         .use_pmdown_time        = 1,
 626         .endianness             = 1,
 627 };
 628
 629 static bool max9867_volatile_register(struct device *dev, unsigned int reg)
 630 {
 631         switch (reg) {
 632         case MAX9867_STATUS:
 633         case MAX9867_JACKSTATUS:
 634         case MAX9867_AUXHIGH:
 635         case MAX9867_AUXLOW:
 636                 return true;
 637         default:
 638                 return false;
 639         }
 640 }
 641
 642 static const struct regmap_config max9867_regmap = {
 643         .reg_bits       = 8,
 644         .val_bits       = 8,
 645         .max_register   = MAX9867_REVISION,
 646         .volatile_reg   = max9867_volatile_register,
 647         .cache_type     = REGCACHE_RBTREE,
 648 };
 649
 650 static int max9867_i2c_probe(struct i2c_client *i2c)
 651 {
 652         struct max9867_priv *max9867;
 653         int ret, reg;
 654
 655         max9867 = devm_kzalloc(&i2c->dev, sizeof(*max9867), GFP_KERNEL);
 656         if (!max9867)
 657                 return -ENOMEM;
 658
 659         i2c_set_clientdata(i2c, max9867);
 660         max9867->regmap = devm_regmap_init_i2c(i2c, &max9867_regmap);
 661         if (IS_ERR(max9867->regmap)) {
 662                 ret = PTR_ERR(max9867->regmap);
 663                 dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
 664                 return ret;
 665         }
 666         ret = regmap_read(max9867->regmap, MAX9867_REVISION, &reg);
 667         if (ret < 0) {
 668                 dev_err(&i2c->dev, "Failed to read: %d\n", ret);
 669                 return ret;
 670         }
 671         dev_info(&i2c->dev, "device revision: %x\n", reg);
 672         ret = devm_snd_soc_register_component(&i2c->dev, &max9867_component,
 673                         max9867_dai, ARRAY_SIZE(max9867_dai));
 674         if (ret < 0) {
 675                 dev_err(&i2c->dev, "Failed to register component: %d\n", ret);
 676                 return ret;
 677         }
 678
 679         max9867->mclk = devm_clk_get(&i2c->dev, NULL);
 680         if (IS_ERR(max9867->mclk))
 681                 return PTR_ERR(max9867->mclk);
 682
 683         return 0;
 684 }
 685
 686 static const struct i2c_device_id max9867_i2c_id[] = {
 687         { "max9867" },
 688         { }
 689 };
 690 MODULE_DEVICE_TABLE(i2c, max9867_i2c_id);
 691
 692 #ifdef CONFIG_OF
 693 static const struct of_device_id max9867_of_match[] = {
 694         { .compatible = "maxim,max9867", },
 695         { }
 696 };
 697 MODULE_DEVICE_TABLE(of, max9867_of_match);
 698 #endif
 699
 700 static struct i2c_driver max9867_i2c_driver = {
 701         .driver = {
 702                 .name = "max9867",
 703                 .of_match_table = of_match_ptr(max9867_of_match),
 704         },
 705         .probe = max9867_i2c_probe,
 706         .id_table = max9867_i2c_id,
 707 };
 708
 709 module_i2c_driver(max9867_i2c_driver);
 710
 711 MODULE_AUTHOR("Ladislav Michl <ladis@linux-mips.org>");
 712 MODULE_DESCRIPTION("ASoC MAX9867 driver");
 713 MODULE_LICENSE("GPL");