sound/soc/codecs/cs35l35.c

   1 /*
   2  * cs35l35.c -- CS35L35 ALSA SoC audio driver
   3  *
   4  * Copyright 2017 Cirrus Logic, Inc.
   5  *
   6  * Author: Brian Austin <brian.austin@cirrus.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  */
  13
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/version.h>
  17 #include <linux/kernel.h>
  18 #include <linux/init.h>
  19 #include <linux/delay.h>
  20 #include <linux/i2c.h>
  21 #include <linux/slab.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/regulator/consumer.h>
  24 #include <linux/gpio/consumer.h>
  25 #include <linux/of_device.h>
  26 #include <linux/of_gpio.h>
  27 #include <linux/regmap.h>
  28 #include <sound/core.h>
  29 #include <sound/pcm.h>
  30 #include <sound/pcm_params.h>
  31 #include <sound/soc.h>
  32 #include <sound/soc-dapm.h>
  33 #include <linux/gpio.h>
  34 #include <sound/initval.h>
  35 #include <sound/tlv.h>
  36 #include <sound/cs35l35.h>
  37 #include <linux/of_irq.h>
  38 #include <linux/completion.h>
  39
  40 #include "cs35l35.h"
  41
  42 /*
  43  * Some fields take zero as a valid value so use a high bit flag that won't
  44  * get written to the device to mark those.
  45  */
  46 #define CS35L35_VALID_PDATA 0x80000000
  47
  48 static const struct reg_default cs35l35_reg[] = {
  49         {CS35L35_PWRCTL1,               0x01},
  50         {CS35L35_PWRCTL2,               0x11},
  51         {CS35L35_PWRCTL3,               0x00},
  52         {CS35L35_CLK_CTL1,              0x04},
  53         {CS35L35_CLK_CTL2,              0x12},
  54         {CS35L35_CLK_CTL3,              0xCF},
  55         {CS35L35_SP_FMT_CTL1,           0x20},
  56         {CS35L35_SP_FMT_CTL2,           0x00},
  57         {CS35L35_SP_FMT_CTL3,           0x02},
  58         {CS35L35_MAG_COMP_CTL,          0x00},
  59         {CS35L35_AMP_INP_DRV_CTL,       0x01},
  60         {CS35L35_AMP_DIG_VOL_CTL,       0x12},
  61         {CS35L35_AMP_DIG_VOL,           0x00},
  62         {CS35L35_ADV_DIG_VOL,           0x00},
  63         {CS35L35_PROTECT_CTL,           0x06},
  64         {CS35L35_AMP_GAIN_AUD_CTL,      0x13},
  65         {CS35L35_AMP_GAIN_PDM_CTL,      0x00},
  66         {CS35L35_AMP_GAIN_ADV_CTL,      0x00},
  67         {CS35L35_GPI_CTL,               0x00},
  68         {CS35L35_BST_CVTR_V_CTL,        0x00},
  69         {CS35L35_BST_PEAK_I,            0x07},
  70         {CS35L35_BST_RAMP_CTL,          0x85},
  71         {CS35L35_BST_CONV_COEF_1,       0x24},
  72         {CS35L35_BST_CONV_COEF_2,       0x24},
  73         {CS35L35_BST_CONV_SLOPE_COMP,   0x4E},
  74         {CS35L35_BST_CONV_SW_FREQ,      0x04},
  75         {CS35L35_CLASS_H_CTL,           0x0B},
  76         {CS35L35_CLASS_H_HEADRM_CTL,    0x0B},
  77         {CS35L35_CLASS_H_RELEASE_RATE,  0x08},
  78         {CS35L35_CLASS_H_FET_DRIVE_CTL, 0x41},
  79         {CS35L35_CLASS_H_VP_CTL,        0xC5},
  80         {CS35L35_VPBR_CTL,              0x0A},
  81         {CS35L35_VPBR_VOL_CTL,          0x90},
  82         {CS35L35_VPBR_TIMING_CTL,       0x6A},
  83         {CS35L35_VPBR_MODE_VOL_CTL,     0x00},
  84         {CS35L35_SPKR_MON_CTL,          0xC0},
  85         {CS35L35_IMON_SCALE_CTL,        0x30},
  86         {CS35L35_AUDIN_RXLOC_CTL,       0x00},
  87         {CS35L35_ADVIN_RXLOC_CTL,       0x80},
  88         {CS35L35_VMON_TXLOC_CTL,        0x00},
  89         {CS35L35_IMON_TXLOC_CTL,        0x80},
  90         {CS35L35_VPMON_TXLOC_CTL,       0x04},
  91         {CS35L35_VBSTMON_TXLOC_CTL,     0x84},
  92         {CS35L35_VPBR_STATUS_TXLOC_CTL, 0x04},
  93         {CS35L35_ZERO_FILL_LOC_CTL,     0x00},
  94         {CS35L35_AUDIN_DEPTH_CTL,       0x0F},
  95         {CS35L35_SPKMON_DEPTH_CTL,      0x0F},
  96         {CS35L35_SUPMON_DEPTH_CTL,      0x0F},
  97         {CS35L35_ZEROFILL_DEPTH_CTL,    0x00},
  98         {CS35L35_MULT_DEV_SYNCH1,       0x02},
  99         {CS35L35_MULT_DEV_SYNCH2,       0x80},
 100         {CS35L35_PROT_RELEASE_CTL,      0x00},
 101         {CS35L35_DIAG_MODE_REG_LOCK,    0x00},
 102         {CS35L35_DIAG_MODE_CTL_1,       0x40},
 103         {CS35L35_DIAG_MODE_CTL_2,       0x00},
 104         {CS35L35_INT_MASK_1,            0xFF},
 105         {CS35L35_INT_MASK_2,            0xFF},
 106         {CS35L35_INT_MASK_3,            0xFF},
 107         {CS35L35_INT_MASK_4,            0xFF},
 108
 109 };
 110
 111 static bool cs35l35_volatile_register(struct device *dev, unsigned int reg)
 112 {
 113         switch (reg) {
 114         case CS35L35_INT_STATUS_1:
 115         case CS35L35_INT_STATUS_2:
 116         case CS35L35_INT_STATUS_3:
 117         case CS35L35_INT_STATUS_4:
 118         case CS35L35_PLL_STATUS:
 119         case CS35L35_OTP_TRIM_STATUS:
 120                 return true;
 121         default:
 122                 return false;
 123         }
 124 }
 125
 126 static bool cs35l35_readable_register(struct device *dev, unsigned int reg)
 127 {
 128         switch (reg) {
 129         case CS35L35_DEVID_AB ... CS35L35_PWRCTL3:
 130         case CS35L35_CLK_CTL1 ... CS35L35_SP_FMT_CTL3:
 131         case CS35L35_MAG_COMP_CTL ... CS35L35_AMP_GAIN_AUD_CTL:
 132         case CS35L35_AMP_GAIN_PDM_CTL ... CS35L35_BST_PEAK_I:
 133         case CS35L35_BST_RAMP_CTL ... CS35L35_BST_CONV_SW_FREQ:
 134         case CS35L35_CLASS_H_CTL ... CS35L35_CLASS_H_VP_CTL:
 135         case CS35L35_CLASS_H_STATUS:
 136         case CS35L35_VPBR_CTL ... CS35L35_VPBR_MODE_VOL_CTL:
 137         case CS35L35_VPBR_ATTEN_STATUS:
 138         case CS35L35_SPKR_MON_CTL:
 139         case CS35L35_IMON_SCALE_CTL ... CS35L35_ZEROFILL_DEPTH_CTL:
 140         case CS35L35_MULT_DEV_SYNCH1 ... CS35L35_PROT_RELEASE_CTL:
 141         case CS35L35_DIAG_MODE_REG_LOCK ... CS35L35_DIAG_MODE_CTL_2:
 142         case CS35L35_INT_MASK_1 ... CS35L35_PLL_STATUS:
 143         case CS35L35_OTP_TRIM_STATUS:
 144                 return true;
 145         default:
 146                 return false;
 147         }
 148 }
 149
 150 static bool cs35l35_precious_register(struct device *dev, unsigned int reg)
 151 {
 152         switch (reg) {
 153         case CS35L35_INT_STATUS_1:
 154         case CS35L35_INT_STATUS_2:
 155         case CS35L35_INT_STATUS_3:
 156         case CS35L35_INT_STATUS_4:
 157         case CS35L35_PLL_STATUS:
 158         case CS35L35_OTP_TRIM_STATUS:
 159                 return true;
 160         default:
 161                 return false;
 162         }
 163 }
 164
 165 static void cs35l35_reset(struct cs35l35_private *cs35l35)
 166 {
 167         gpiod_set_value_cansleep(cs35l35->reset_gpio, 0);
 168         usleep_range(2000, 2100);
 169         gpiod_set_value_cansleep(cs35l35->reset_gpio, 1);
 170         usleep_range(1000, 1100);
 171 }
 172
 173 static int cs35l35_wait_for_pdn(struct cs35l35_private *cs35l35)
 174 {
 175         int ret;
 176
 177         if (cs35l35->pdata.ext_bst) {
 178                 usleep_range(5000, 5500);
 179                 return 0;
 180         }
 181
 182         reinit_completion(&cs35l35->pdn_done);
 183
 184         ret = wait_for_completion_timeout(&cs35l35->pdn_done,
 185                                           msecs_to_jiffies(100));
 186         if (ret == 0) {
 187                 dev_err(cs35l35->dev, "PDN_DONE did not complete\n");
 188                 return -ETIMEDOUT;
 189         }
 190
 191         return 0;
 192 }
 193
 194 static int cs35l35_sdin_event(struct snd_soc_dapm_widget *w,
 195                 struct snd_kcontrol *kcontrol, int event)
 196 {
 197         struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 198         struct cs35l35_private *cs35l35 = snd_soc_codec_get_drvdata(codec);
 199         int ret = 0;
 200
 201         switch (event) {
 202         case SND_SOC_DAPM_PRE_PMU:
 203                 regmap_update_bits(cs35l35->regmap, CS35L35_CLK_CTL1,
 204                                         CS35L35_MCLK_DIS_MASK,
 205                                         0 << CS35L35_MCLK_DIS_SHIFT);
 206                 regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL1,
 207                                         CS35L35_DISCHG_FILT_MASK,
 208                                         0 << CS35L35_DISCHG_FILT_SHIFT);
 209                 regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL1,
 210                                         CS35L35_PDN_ALL_MASK, 0);
 211                 break;
 212         case SND_SOC_DAPM_POST_PMD:
 213                 regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL1,
 214                                         CS35L35_DISCHG_FILT_MASK,
 215                                         1 << CS35L35_DISCHG_FILT_SHIFT);
 216                 regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL1,
 217                                           CS35L35_PDN_ALL_MASK, 1);
 218
 219                 /* Already muted, so disable volume ramp for faster shutdown */
 220                 regmap_update_bits(cs35l35->regmap, CS35L35_AMP_DIG_VOL_CTL,
 221                                    CS35L35_AMP_DIGSFT_MASK, 0);
 222
 223                 ret = cs35l35_wait_for_pdn(cs35l35);
 224
 225                 regmap_update_bits(cs35l35->regmap, CS35L35_CLK_CTL1,
 226                                         CS35L35_MCLK_DIS_MASK,
 227                                         1 << CS35L35_MCLK_DIS_SHIFT);
 228
 229                 regmap_update_bits(cs35l35->regmap, CS35L35_AMP_DIG_VOL_CTL,
 230                                    CS35L35_AMP_DIGSFT_MASK,
 231                                    1 << CS35L35_AMP_DIGSFT_SHIFT);
 232                 break;
 233         default:
 234                 dev_err(codec->dev, "Invalid event = 0x%x\n", event);
 235                 ret = -EINVAL;
 236         }
 237         return ret;
 238 }
 239
 240 static int cs35l35_main_amp_event(struct snd_soc_dapm_widget *w,
 241                 struct snd_kcontrol *kcontrol, int event)
 242 {
 243         struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 244         struct cs35l35_private *cs35l35 = snd_soc_codec_get_drvdata(codec);
 245         unsigned int reg[4];
 246         int i;
 247
 248         switch (event) {
 249         case SND_SOC_DAPM_PRE_PMU:
 250                 if (cs35l35->pdata.bst_pdn_fet_on)
 251                         regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL2,
 252                                 CS35L35_PDN_BST_MASK,
 253                                 0 << CS35L35_PDN_BST_FETON_SHIFT);
 254                 else
 255                         regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL2,
 256                                 CS35L35_PDN_BST_MASK,
 257                                 0 << CS35L35_PDN_BST_FETOFF_SHIFT);
 258                 break;
 259         case SND_SOC_DAPM_POST_PMU:
 260                 usleep_range(5000, 5100);
 261                 /* If in PDM mode we must use VP for Voltage control */
 262                 if (cs35l35->pdm_mode)
 263                         regmap_update_bits(cs35l35->regmap,
 264                                         CS35L35_BST_CVTR_V_CTL,
 265                                         CS35L35_BST_CTL_MASK,
 266                                         0 << CS35L35_BST_CTL_SHIFT);
 267
 268                 regmap_update_bits(cs35l35->regmap, CS35L35_PROTECT_CTL,
 269                         CS35L35_AMP_MUTE_MASK, 0);
 270
 271                 for (i = 0; i < 2; i++)
 272                         regmap_bulk_read(cs35l35->regmap, CS35L35_INT_STATUS_1,
 273                                         &reg, ARRAY_SIZE(reg));
 274
 275                 break;
 276         case SND_SOC_DAPM_PRE_PMD:
 277                 regmap_update_bits(cs35l35->regmap, CS35L35_PROTECT_CTL,
 278                                 CS35L35_AMP_MUTE_MASK,
 279                                 1 << CS35L35_AMP_MUTE_SHIFT);
 280                 if (cs35l35->pdata.bst_pdn_fet_on)
 281                         regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL2,
 282                                 CS35L35_PDN_BST_MASK,
 283                                 1 << CS35L35_PDN_BST_FETON_SHIFT);
 284                 else
 285                         regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL2,
 286                                 CS35L35_PDN_BST_MASK,
 287                                 1 << CS35L35_PDN_BST_FETOFF_SHIFT);
 288                 break;
 289         case SND_SOC_DAPM_POST_PMD:
 290                 usleep_range(5000, 5100);
 291                 /*
 292                  * If PDM mode we should switch back to pdata value
 293                  * for Voltage control when we go down
 294                  */
 295                 if (cs35l35->pdm_mode)
 296                         regmap_update_bits(cs35l35->regmap,
 297                                         CS35L35_BST_CVTR_V_CTL,
 298                                         CS35L35_BST_CTL_MASK,
 299                                         cs35l35->pdata.bst_vctl
 300                                         << CS35L35_BST_CTL_SHIFT);
 301
 302                 break;
 303         default:
 304                 dev_err(codec->dev, "Invalid event = 0x%x\n", event);
 305         }
 306         return 0;
 307 }
 308
 309 static DECLARE_TLV_DB_SCALE(amp_gain_tlv, 0, 1, 1);
 310 static DECLARE_TLV_DB_SCALE(dig_vol_tlv, -10200, 50, 0);
 311
 312 static const struct snd_kcontrol_new cs35l35_aud_controls[] = {
 313         SOC_SINGLE_SX_TLV("Digital Audio Volume", CS35L35_AMP_DIG_VOL,
 314                       0, 0x34, 0xE4, dig_vol_tlv),
 315         SOC_SINGLE_TLV("Analog Audio Volume", CS35L35_AMP_GAIN_AUD_CTL, 0, 19, 0,
 316                         amp_gain_tlv),
 317         SOC_SINGLE_TLV("PDM Volume", CS35L35_AMP_GAIN_PDM_CTL, 0, 19, 0,
 318                         amp_gain_tlv),
 319 };
 320
 321 static const struct snd_kcontrol_new cs35l35_adv_controls[] = {
 322         SOC_SINGLE_SX_TLV("Digital Advisory Volume", CS35L35_ADV_DIG_VOL,
 323                       0, 0x34, 0xE4, dig_vol_tlv),
 324         SOC_SINGLE_TLV("Analog Advisory Volume", CS35L35_AMP_GAIN_ADV_CTL, 0, 19, 0,
 325                         amp_gain_tlv),
 326 };
 327
 328 static const struct snd_soc_dapm_widget cs35l35_dapm_widgets[] = {
 329         SND_SOC_DAPM_AIF_IN_E("SDIN", NULL, 0, CS35L35_PWRCTL3, 1, 1,
 330                                 cs35l35_sdin_event, SND_SOC_DAPM_PRE_PMU |
 331                                 SND_SOC_DAPM_POST_PMD),
 332         SND_SOC_DAPM_AIF_OUT("SDOUT", NULL, 0, CS35L35_PWRCTL3, 2, 1),
 333
 334         SND_SOC_DAPM_OUTPUT("SPK"),
 335
 336         SND_SOC_DAPM_INPUT("VP"),
 337         SND_SOC_DAPM_INPUT("VBST"),
 338         SND_SOC_DAPM_INPUT("ISENSE"),
 339         SND_SOC_DAPM_INPUT("VSENSE"),
 340
 341         SND_SOC_DAPM_ADC("VMON ADC", NULL, CS35L35_PWRCTL2, 7, 1),
 342         SND_SOC_DAPM_ADC("IMON ADC", NULL, CS35L35_PWRCTL2, 6, 1),
 343         SND_SOC_DAPM_ADC("VPMON ADC", NULL, CS35L35_PWRCTL3, 3, 1),
 344         SND_SOC_DAPM_ADC("VBSTMON ADC", NULL, CS35L35_PWRCTL3, 4, 1),
 345         SND_SOC_DAPM_ADC("CLASS H", NULL, CS35L35_PWRCTL2, 5, 1),
 346
 347         SND_SOC_DAPM_OUT_DRV_E("Main AMP", CS35L35_PWRCTL2, 0, 1, NULL, 0,
 348                 cs35l35_main_amp_event, SND_SOC_DAPM_PRE_PMU |
 349                                 SND_SOC_DAPM_POST_PMD | SND_SOC_DAPM_POST_PMU |
 350                                 SND_SOC_DAPM_PRE_PMD),
 351 };
 352
 353 static const struct snd_soc_dapm_route cs35l35_audio_map[] = {
 354         {"VPMON ADC", NULL, "VP"},
 355         {"VBSTMON ADC", NULL, "VBST"},
 356         {"IMON ADC", NULL, "ISENSE"},
 357         {"VMON ADC", NULL, "VSENSE"},
 358         {"SDOUT", NULL, "IMON ADC"},
 359         {"SDOUT", NULL, "VMON ADC"},
 360         {"SDOUT", NULL, "VBSTMON ADC"},
 361         {"SDOUT", NULL, "VPMON ADC"},
 362         {"AMP Capture", NULL, "SDOUT"},
 363
 364         {"SDIN", NULL, "AMP Playback"},
 365         {"CLASS H", NULL, "SDIN"},
 366         {"Main AMP", NULL, "CLASS H"},
 367         {"SPK", NULL, "Main AMP"},
 368 };
 369
 370 static int cs35l35_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
 371 {
 372         struct snd_soc_codec *codec = codec_dai->codec;
 373         struct cs35l35_private *cs35l35 = snd_soc_codec_get_drvdata(codec);
 374
 375         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 376         case SND_SOC_DAIFMT_CBM_CFM:
 377                 regmap_update_bits(cs35l35->regmap, CS35L35_CLK_CTL1,
 378                                     CS35L35_MS_MASK, 1 << CS35L35_MS_SHIFT);
 379                 cs35l35->slave_mode = false;
 380                 break;
 381         case SND_SOC_DAIFMT_CBS_CFS:
 382                 regmap_update_bits(cs35l35->regmap, CS35L35_CLK_CTL1,
 383                                     CS35L35_MS_MASK, 0 << CS35L35_MS_SHIFT);
 384                 cs35l35->slave_mode = true;
 385                 break;
 386         default:
 387                 return -EINVAL;
 388         }
 389
 390         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 391         case SND_SOC_DAIFMT_I2S:
 392                 cs35l35->i2s_mode = true;
 393                 cs35l35->pdm_mode = false;
 394                 break;
 395         case SND_SOC_DAIFMT_PDM:
 396                 cs35l35->pdm_mode = true;
 397                 cs35l35->i2s_mode = false;
 398                 break;
 399         default:
 400                 return -EINVAL;
 401         }
 402
 403         return 0;
 404 }
 405
 406 struct cs35l35_sysclk_config {
 407         int sysclk;
 408         int srate;
 409         u8 clk_cfg;
 410 };
 411
 412 static struct cs35l35_sysclk_config cs35l35_clk_ctl[] = {
 413
 414         /* SYSCLK, Sample Rate, Serial Port Cfg */
 415         {5644800, 44100, 0x00},
 416         {5644800, 88200, 0x40},
 417         {6144000, 48000, 0x10},
 418         {6144000, 96000, 0x50},
 419         {11289600, 44100, 0x01},
 420         {11289600, 88200, 0x41},
 421         {11289600, 176400, 0x81},
 422         {12000000, 44100, 0x03},
 423         {12000000, 48000, 0x13},
 424         {12000000, 88200, 0x43},
 425         {12000000, 96000, 0x53},
 426         {12000000, 176400, 0x83},
 427         {12000000, 192000, 0x93},
 428         {12288000, 48000, 0x11},
 429         {12288000, 96000, 0x51},
 430         {12288000, 192000, 0x91},
 431         {13000000, 44100, 0x07},
 432         {13000000, 48000, 0x17},
 433         {13000000, 88200, 0x47},
 434         {13000000, 96000, 0x57},
 435         {13000000, 176400, 0x87},
 436         {13000000, 192000, 0x97},
 437         {22579200, 44100, 0x02},
 438         {22579200, 88200, 0x42},
 439         {22579200, 176400, 0x82},
 440         {24000000, 44100, 0x0B},
 441         {24000000, 48000, 0x1B},
 442         {24000000, 88200, 0x4B},
 443         {24000000, 96000, 0x5B},
 444         {24000000, 176400, 0x8B},
 445         {24000000, 192000, 0x9B},
 446         {24576000, 48000, 0x12},
 447         {24576000, 96000, 0x52},
 448         {24576000, 192000, 0x92},
 449         {26000000, 44100, 0x0F},
 450         {26000000, 48000, 0x1F},
 451         {26000000, 88200, 0x4F},
 452         {26000000, 96000, 0x5F},
 453         {26000000, 176400, 0x8F},
 454         {26000000, 192000, 0x9F},
 455 };
 456
 457 static int cs35l35_get_clk_config(int sysclk, int srate)
 458 {
 459         int i;
 460
 461         for (i = 0; i < ARRAY_SIZE(cs35l35_clk_ctl); i++) {
 462                 if (cs35l35_clk_ctl[i].sysclk == sysclk &&
 463                         cs35l35_clk_ctl[i].srate == srate)
 464                         return cs35l35_clk_ctl[i].clk_cfg;
 465         }
 466         return -EINVAL;
 467 }
 468
 469 static int cs35l35_hw_params(struct snd_pcm_substream *substream,
 470                                  struct snd_pcm_hw_params *params,
 471                                  struct snd_soc_dai *dai)
 472 {
 473         struct snd_soc_codec *codec = dai->codec;
 474         struct cs35l35_private *cs35l35 = snd_soc_codec_get_drvdata(codec);
 475         struct classh_cfg *classh = &cs35l35->pdata.classh_algo;
 476         int srate = params_rate(params);
 477         int ret = 0;
 478         u8 sp_sclks;
 479         int audin_format;
 480         int errata_chk;
 481
 482         int clk_ctl = cs35l35_get_clk_config(cs35l35->sysclk, srate);
 483
 484         if (clk_ctl < 0) {
 485                 dev_err(codec->dev, "Invalid CLK:Rate %d:%d\n",
 486                         cs35l35->sysclk, srate);
 487                 return -EINVAL;
 488         }
 489
 490         ret = regmap_update_bits(cs35l35->regmap, CS35L35_CLK_CTL2,
 491                           CS35L35_CLK_CTL2_MASK, clk_ctl);
 492         if (ret != 0) {
 493                 dev_err(codec->dev, "Failed to set port config %d\n", ret);
 494                 return ret;
 495         }
 496
 497         /*
 498          * Rev A0 Errata
 499          * When configured for the weak-drive detection path (CH_WKFET_DIS = 0)
 500          * the Class H algorithm does not enable weak-drive operation for
 501          * nonzero values of CH_WKFET_DELAY if SP_RATE = 01 or 10
 502          */
 503         errata_chk = clk_ctl & CS35L35_SP_RATE_MASK;
 504
 505         if (classh->classh_wk_fet_disable == 0x00 &&
 506                 (errata_chk == 0x01 || errata_chk == 0x03)) {
 507                 ret = regmap_update_bits(cs35l35->regmap,
 508                                         CS35L35_CLASS_H_FET_DRIVE_CTL,
 509                                         CS35L35_CH_WKFET_DEL_MASK,
 510                                         0 << CS35L35_CH_WKFET_DEL_SHIFT);
 511                 if (ret != 0) {
 512                         dev_err(codec->dev, "Failed to set fet config %d\n",
 513                                 ret);
 514                         return ret;
 515                 }
 516         }
 517
 518         /*
 519          * You can pull more Monitor data from the SDOUT pin than going to SDIN
 520          * Just make sure your SCLK is fast enough to fill the frame
 521          */
 522         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 523                 switch (params_width(params)) {
 524                 case 8:
 525                         audin_format = CS35L35_SDIN_DEPTH_8;
 526                         break;
 527                 case 16:
 528                         audin_format = CS35L35_SDIN_DEPTH_16;
 529                         break;
 530                 case 24:
 531                         audin_format = CS35L35_SDIN_DEPTH_24;
 532                         break;
 533                 default:
 534                         dev_err(codec->dev, "Unsupported Width %d\n",
 535                                 params_width(params));
 536                         return -EINVAL;
 537                 }
 538                 regmap_update_bits(cs35l35->regmap,
 539                                 CS35L35_AUDIN_DEPTH_CTL,
 540                                 CS35L35_AUDIN_DEPTH_MASK,
 541                                 audin_format <<
 542                                 CS35L35_AUDIN_DEPTH_SHIFT);
 543                 if (cs35l35->pdata.stereo) {
 544                         regmap_update_bits(cs35l35->regmap,
 545                                         CS35L35_AUDIN_DEPTH_CTL,
 546                                         CS35L35_ADVIN_DEPTH_MASK,
 547                                         audin_format <<
 548                                         CS35L35_ADVIN_DEPTH_SHIFT);
 549                 }
 550         }
 551
 552         if (cs35l35->i2s_mode) {
 553                 /* We have to take the SCLK to derive num sclks
 554                  * to configure the CLOCK_CTL3 register correctly
 555                  */
 556                 if ((cs35l35->sclk / srate) % 4) {
 557                         dev_err(codec->dev, "Unsupported sclk/fs ratio %d:%d\n",
 558                                         cs35l35->sclk, srate);
 559                         return -EINVAL;
 560                 }
 561                 sp_sclks = ((cs35l35->sclk / srate) / 4) - 1;
 562
 563                 /* Only certain ratios are supported in I2S Slave Mode */
 564                 if (cs35l35->slave_mode) {
 565                         switch (sp_sclks) {
 566                         case CS35L35_SP_SCLKS_32FS:
 567                         case CS35L35_SP_SCLKS_48FS:
 568                         case CS35L35_SP_SCLKS_64FS:
 569                                 break;
 570                         default:
 571                                 dev_err(codec->dev, "ratio not supported\n");
 572                                 return -EINVAL;
 573                         }
 574                 } else {
 575                         /* Only certain ratios supported in I2S MASTER Mode */
 576                         switch (sp_sclks) {
 577                         case CS35L35_SP_SCLKS_32FS:
 578                         case CS35L35_SP_SCLKS_64FS:
 579                                 break;
 580                         default:
 581                                 dev_err(codec->dev, "ratio not supported\n");
 582                                 return -EINVAL;
 583                         }
 584                 }
 585                 ret = regmap_update_bits(cs35l35->regmap,
 586                                         CS35L35_CLK_CTL3,
 587                                         CS35L35_SP_SCLKS_MASK, sp_sclks <<
 588                                         CS35L35_SP_SCLKS_SHIFT);
 589                 if (ret != 0) {
 590                         dev_err(codec->dev, "Failed to set fsclk %d\n", ret);
 591                         return ret;
 592                 }
 593         }
 594
 595         return ret;
 596 }
 597
 598 static const unsigned int cs35l35_src_rates[] = {
 599         44100, 48000, 88200, 96000, 176400, 192000
 600 };
 601
 602 static const struct snd_pcm_hw_constraint_list cs35l35_constraints = {
 603         .count  = ARRAY_SIZE(cs35l35_src_rates),
 604         .list   = cs35l35_src_rates,
 605 };
 606
 607 static int cs35l35_pcm_startup(struct snd_pcm_substream *substream,
 608                                struct snd_soc_dai *dai)
 609 {
 610         struct snd_soc_codec *codec = dai->codec;
 611         struct cs35l35_private *cs35l35 = snd_soc_codec_get_drvdata(codec);
 612
 613         if (!substream->runtime)
 614                 return 0;
 615
 616         snd_pcm_hw_constraint_list(substream->runtime, 0,
 617                                 SNDRV_PCM_HW_PARAM_RATE, &cs35l35_constraints);
 618
 619         regmap_update_bits(cs35l35->regmap, CS35L35_AMP_INP_DRV_CTL,
 620                                         CS35L35_PDM_MODE_MASK,
 621                                         0 << CS35L35_PDM_MODE_SHIFT);
 622
 623         return 0;
 624 }
 625
 626 static const unsigned int cs35l35_pdm_rates[] = {
 627         44100, 48000, 88200, 96000
 628 };
 629
 630 static const struct snd_pcm_hw_constraint_list cs35l35_pdm_constraints = {
 631         .count  = ARRAY_SIZE(cs35l35_pdm_rates),
 632         .list   = cs35l35_pdm_rates,
 633 };
 634
 635 static int cs35l35_pdm_startup(struct snd_pcm_substream *substream,
 636                                struct snd_soc_dai *dai)
 637 {
 638         struct snd_soc_codec *codec = dai->codec;
 639         struct cs35l35_private *cs35l35 = snd_soc_codec_get_drvdata(codec);
 640
 641         if (!substream->runtime)
 642                 return 0;
 643
 644         snd_pcm_hw_constraint_list(substream->runtime, 0,
 645                                 SNDRV_PCM_HW_PARAM_RATE,
 646                                 &cs35l35_pdm_constraints);
 647
 648         regmap_update_bits(cs35l35->regmap, CS35L35_AMP_INP_DRV_CTL,
 649                                         CS35L35_PDM_MODE_MASK,
 650                                         1 << CS35L35_PDM_MODE_SHIFT);
 651
 652         return 0;
 653 }
 654
 655 static int cs35l35_dai_set_sysclk(struct snd_soc_dai *dai,
 656                                 int clk_id, unsigned int freq, int dir)
 657 {
 658         struct snd_soc_codec *codec = dai->codec;
 659         struct cs35l35_private *cs35l35 = snd_soc_codec_get_drvdata(codec);
 660
 661         /* Need the SCLK Frequency regardless of sysclk source for I2S */
 662         cs35l35->sclk = freq;
 663
 664         return 0;
 665 }
 666
 667 static const struct snd_soc_dai_ops cs35l35_ops = {
 668         .startup = cs35l35_pcm_startup,
 669         .set_fmt = cs35l35_set_dai_fmt,
 670         .hw_params = cs35l35_hw_params,
 671         .set_sysclk = cs35l35_dai_set_sysclk,
 672 };
 673
 674 static const struct snd_soc_dai_ops cs35l35_pdm_ops = {
 675         .startup = cs35l35_pdm_startup,
 676         .set_fmt = cs35l35_set_dai_fmt,
 677         .hw_params = cs35l35_hw_params,
 678 };
 679
 680 static struct snd_soc_dai_driver cs35l35_dai[] = {
 681         {
 682                 .name = "cs35l35-pcm",
 683                 .id = 0,
 684                 .playback = {
 685                         .stream_name = "AMP Playback",
 686                         .channels_min = 1,
 687                         .channels_max = 8,
 688                         .rates = SNDRV_PCM_RATE_KNOT,
 689                         .formats = CS35L35_FORMATS,
 690                 },
 691                 .capture = {
 692                         .stream_name = "AMP Capture",
 693                         .channels_min = 1,
 694                         .channels_max = 8,
 695                         .rates = SNDRV_PCM_RATE_KNOT,
 696                         .formats = CS35L35_FORMATS,
 697                 },
 698                 .ops = &cs35l35_ops,
 699                 .symmetric_rates = 1,
 700         },
 701         {
 702                 .name = "cs35l35-pdm",
 703                 .id = 1,
 704                 .playback = {
 705                         .stream_name = "PDM Playback",
 706                         .channels_min = 1,
 707                         .channels_max = 2,
 708                         .rates = SNDRV_PCM_RATE_KNOT,
 709                         .formats = CS35L35_FORMATS,
 710                 },
 711                 .ops = &cs35l35_pdm_ops,
 712         },
 713 };
 714
 715 static int cs35l35_codec_set_sysclk(struct snd_soc_codec *codec,
 716                                 int clk_id, int source, unsigned int freq,
 717                                 int dir)
 718 {
 719         struct cs35l35_private *cs35l35 = snd_soc_codec_get_drvdata(codec);
 720         int clksrc;
 721         int ret = 0;
 722
 723         switch (clk_id) {
 724         case 0:
 725                 clksrc = CS35L35_CLK_SOURCE_MCLK;
 726                 break;
 727         case 1:
 728                 clksrc = CS35L35_CLK_SOURCE_SCLK;
 729                 break;
 730         case 2:
 731                 clksrc = CS35L35_CLK_SOURCE_PDM;
 732                 break;
 733         default:
 734                 dev_err(codec->dev, "Invalid CLK Source\n");
 735                 return -EINVAL;
 736         }
 737
 738         switch (freq) {
 739         case 5644800:
 740         case 6144000:
 741         case 11289600:
 742         case 12000000:
 743         case 12288000:
 744         case 13000000:
 745         case 22579200:
 746         case 24000000:
 747         case 24576000:
 748         case 26000000:
 749                 cs35l35->sysclk = freq;
 750                 break;
 751         default:
 752                 dev_err(codec->dev, "Invalid CLK Frequency Input : %d\n", freq);
 753                 return -EINVAL;
 754         }
 755
 756         ret = regmap_update_bits(cs35l35->regmap, CS35L35_CLK_CTL1,
 757                                 CS35L35_CLK_SOURCE_MASK,
 758                                 clksrc << CS35L35_CLK_SOURCE_SHIFT);
 759         if (ret != 0) {
 760                 dev_err(codec->dev, "Failed to set sysclk %d\n", ret);
 761                 return ret;
 762         }
 763
 764         return ret;
 765 }
 766
 767 static int cs35l35_codec_probe(struct snd_soc_codec *codec)
 768 {
 769         struct cs35l35_private *cs35l35 = snd_soc_codec_get_drvdata(codec);
 770         struct classh_cfg *classh = &cs35l35->pdata.classh_algo;
 771         struct monitor_cfg *monitor_config = &cs35l35->pdata.mon_cfg;
 772         int ret;
 773
 774         /* Set Platform Data */
 775         if (cs35l35->pdata.bst_vctl)
 776                 regmap_update_bits(cs35l35->regmap, CS35L35_BST_CVTR_V_CTL,
 777                                 CS35L35_BST_CTL_MASK,
 778                                 cs35l35->pdata.bst_vctl);
 779
 780         if (cs35l35->pdata.bst_ipk)
 781                 regmap_update_bits(cs35l35->regmap, CS35L35_BST_PEAK_I,
 782                                 CS35L35_BST_IPK_MASK,
 783                                 cs35l35->pdata.bst_ipk <<
 784                                 CS35L35_BST_IPK_SHIFT);
 785
 786         if (cs35l35->pdata.gain_zc)
 787                 regmap_update_bits(cs35l35->regmap, CS35L35_PROTECT_CTL,
 788                                 CS35L35_AMP_GAIN_ZC_MASK,
 789                                 cs35l35->pdata.gain_zc <<
 790                                 CS35L35_AMP_GAIN_ZC_SHIFT);
 791
 792         if (cs35l35->pdata.aud_channel)
 793                 regmap_update_bits(cs35l35->regmap,
 794                                 CS35L35_AUDIN_RXLOC_CTL,
 795                                 CS35L35_AUD_IN_LR_MASK,
 796                                 cs35l35->pdata.aud_channel <<
 797                                 CS35L35_AUD_IN_LR_SHIFT);
 798
 799         if (cs35l35->pdata.stereo) {
 800                 regmap_update_bits(cs35l35->regmap,
 801                                 CS35L35_ADVIN_RXLOC_CTL,
 802                                 CS35L35_ADV_IN_LR_MASK,
 803                                 cs35l35->pdata.adv_channel <<
 804                                 CS35L35_ADV_IN_LR_SHIFT);
 805                 if (cs35l35->pdata.shared_bst)
 806                         regmap_update_bits(cs35l35->regmap, CS35L35_CLASS_H_CTL,
 807                                         CS35L35_CH_STEREO_MASK,
 808                                         1 << CS35L35_CH_STEREO_SHIFT);
 809                 ret = snd_soc_add_codec_controls(codec, cs35l35_adv_controls,
 810                                         ARRAY_SIZE(cs35l35_adv_controls));
 811                 if (ret)
 812                         return ret;
 813         }
 814
 815         if (cs35l35->pdata.sp_drv_str)
 816                 regmap_update_bits(cs35l35->regmap, CS35L35_CLK_CTL1,
 817                                 CS35L35_SP_DRV_MASK,
 818                                 cs35l35->pdata.sp_drv_str <<
 819                                 CS35L35_SP_DRV_SHIFT);
 820         if (cs35l35->pdata.sp_drv_unused)
 821                 regmap_update_bits(cs35l35->regmap, CS35L35_SP_FMT_CTL3,
 822                                    CS35L35_SP_I2S_DRV_MASK,
 823                                    cs35l35->pdata.sp_drv_unused <<
 824                                    CS35L35_SP_I2S_DRV_SHIFT);
 825
 826         if (classh->classh_algo_enable) {
 827                 if (classh->classh_bst_override)
 828                         regmap_update_bits(cs35l35->regmap,
 829                                         CS35L35_CLASS_H_CTL,
 830                                         CS35L35_CH_BST_OVR_MASK,
 831                                         classh->classh_bst_override <<
 832                                         CS35L35_CH_BST_OVR_SHIFT);
 833                 if (classh->classh_bst_max_limit)
 834                         regmap_update_bits(cs35l35->regmap,
 835                                         CS35L35_CLASS_H_CTL,
 836                                         CS35L35_CH_BST_LIM_MASK,
 837                                         classh->classh_bst_max_limit <<
 838                                         CS35L35_CH_BST_LIM_SHIFT);
 839                 if (classh->classh_mem_depth)
 840                         regmap_update_bits(cs35l35->regmap,
 841                                         CS35L35_CLASS_H_CTL,
 842                                         CS35L35_CH_MEM_DEPTH_MASK,
 843                                         classh->classh_mem_depth <<
 844                                         CS35L35_CH_MEM_DEPTH_SHIFT);
 845                 if (classh->classh_headroom)
 846                         regmap_update_bits(cs35l35->regmap,
 847                                         CS35L35_CLASS_H_HEADRM_CTL,
 848                                         CS35L35_CH_HDRM_CTL_MASK,
 849                                         classh->classh_headroom <<
 850                                         CS35L35_CH_HDRM_CTL_SHIFT);
 851                 if (classh->classh_release_rate)
 852                         regmap_update_bits(cs35l35->regmap,
 853                                         CS35L35_CLASS_H_RELEASE_RATE,
 854                                         CS35L35_CH_REL_RATE_MASK,
 855                                         classh->classh_release_rate <<
 856                                         CS35L35_CH_REL_RATE_SHIFT);
 857                 if (classh->classh_wk_fet_disable)
 858                         regmap_update_bits(cs35l35->regmap,
 859                                         CS35L35_CLASS_H_FET_DRIVE_CTL,
 860                                         CS35L35_CH_WKFET_DIS_MASK,
 861                                         classh->classh_wk_fet_disable <<
 862                                         CS35L35_CH_WKFET_DIS_SHIFT);
 863                 if (classh->classh_wk_fet_delay)
 864                         regmap_update_bits(cs35l35->regmap,
 865                                         CS35L35_CLASS_H_FET_DRIVE_CTL,
 866                                         CS35L35_CH_WKFET_DEL_MASK,
 867                                         classh->classh_wk_fet_delay <<
 868                                         CS35L35_CH_WKFET_DEL_SHIFT);
 869                 if (classh->classh_wk_fet_thld)
 870                         regmap_update_bits(cs35l35->regmap,
 871                                         CS35L35_CLASS_H_FET_DRIVE_CTL,
 872                                         CS35L35_CH_WKFET_THLD_MASK,
 873                                         classh->classh_wk_fet_thld <<
 874                                         CS35L35_CH_WKFET_THLD_SHIFT);
 875                 if (classh->classh_vpch_auto)
 876                         regmap_update_bits(cs35l35->regmap,
 877                                         CS35L35_CLASS_H_VP_CTL,
 878                                         CS35L35_CH_VP_AUTO_MASK,
 879                                         classh->classh_vpch_auto <<
 880                                         CS35L35_CH_VP_AUTO_SHIFT);
 881                 if (classh->classh_vpch_rate)
 882                         regmap_update_bits(cs35l35->regmap,
 883                                         CS35L35_CLASS_H_VP_CTL,
 884                                         CS35L35_CH_VP_RATE_MASK,
 885                                         classh->classh_vpch_rate <<
 886                                         CS35L35_CH_VP_RATE_SHIFT);
 887                 if (classh->classh_vpch_man)
 888                         regmap_update_bits(cs35l35->regmap,
 889                                         CS35L35_CLASS_H_VP_CTL,
 890                                         CS35L35_CH_VP_MAN_MASK,
 891                                         classh->classh_vpch_man <<
 892                                         CS35L35_CH_VP_MAN_SHIFT);
 893         }
 894
 895         if (monitor_config->is_present) {
 896                 if (monitor_config->vmon_specs) {
 897                         regmap_update_bits(cs35l35->regmap,
 898                                         CS35L35_SPKMON_DEPTH_CTL,
 899                                         CS35L35_VMON_DEPTH_MASK,
 900                                         monitor_config->vmon_dpth <<
 901                                         CS35L35_VMON_DEPTH_SHIFT);
 902                         regmap_update_bits(cs35l35->regmap,
 903                                         CS35L35_VMON_TXLOC_CTL,
 904                                         CS35L35_MON_TXLOC_MASK,
 905                                         monitor_config->vmon_loc <<
 906                                         CS35L35_MON_TXLOC_SHIFT);
 907                         regmap_update_bits(cs35l35->regmap,
 908                                         CS35L35_VMON_TXLOC_CTL,
 909                                         CS35L35_MON_FRM_MASK,
 910                                         monitor_config->vmon_frm <<
 911                                         CS35L35_MON_FRM_SHIFT);
 912                 }
 913                 if (monitor_config->imon_specs) {
 914                         regmap_update_bits(cs35l35->regmap,
 915                                         CS35L35_SPKMON_DEPTH_CTL,
 916                                         CS35L35_IMON_DEPTH_MASK,
 917                                         monitor_config->imon_dpth <<
 918                                         CS35L35_IMON_DEPTH_SHIFT);
 919                         regmap_update_bits(cs35l35->regmap,
 920                                         CS35L35_IMON_TXLOC_CTL,
 921                                         CS35L35_MON_TXLOC_MASK,
 922                                         monitor_config->imon_loc <<
 923                                         CS35L35_MON_TXLOC_SHIFT);
 924                         regmap_update_bits(cs35l35->regmap,
 925                                         CS35L35_IMON_TXLOC_CTL,
 926                                         CS35L35_MON_FRM_MASK,
 927                                         monitor_config->imon_frm <<
 928                                         CS35L35_MON_FRM_SHIFT);
 929                         regmap_update_bits(cs35l35->regmap,
 930                                         CS35L35_IMON_SCALE_CTL,
 931                                         CS35L35_IMON_SCALE_MASK,
 932                                         monitor_config->imon_scale <<
 933                                         CS35L35_IMON_SCALE_SHIFT);
 934                 }
 935                 if (monitor_config->vpmon_specs) {
 936                         regmap_update_bits(cs35l35->regmap,
 937                                         CS35L35_SUPMON_DEPTH_CTL,
 938                                         CS35L35_VPMON_DEPTH_MASK,
 939                                         monitor_config->vpmon_dpth <<
 940                                         CS35L35_VPMON_DEPTH_SHIFT);
 941                         regmap_update_bits(cs35l35->regmap,
 942                                         CS35L35_VPMON_TXLOC_CTL,
 943                                         CS35L35_MON_TXLOC_MASK,
 944                                         monitor_config->vpmon_loc <<
 945                                         CS35L35_MON_TXLOC_SHIFT);
 946                         regmap_update_bits(cs35l35->regmap,
 947                                         CS35L35_VPMON_TXLOC_CTL,
 948                                         CS35L35_MON_FRM_MASK,
 949                                         monitor_config->vpmon_frm <<
 950                                         CS35L35_MON_FRM_SHIFT);
 951                 }
 952                 if (monitor_config->vbstmon_specs) {
 953                         regmap_update_bits(cs35l35->regmap,
 954                                         CS35L35_SUPMON_DEPTH_CTL,
 955                                         CS35L35_VBSTMON_DEPTH_MASK,
 956                                         monitor_config->vpmon_dpth <<
 957                                         CS35L35_VBSTMON_DEPTH_SHIFT);
 958                         regmap_update_bits(cs35l35->regmap,
 959                                         CS35L35_VBSTMON_TXLOC_CTL,
 960                                         CS35L35_MON_TXLOC_MASK,
 961                                         monitor_config->vbstmon_loc <<
 962                                         CS35L35_MON_TXLOC_SHIFT);
 963                         regmap_update_bits(cs35l35->regmap,
 964                                         CS35L35_VBSTMON_TXLOC_CTL,
 965                                         CS35L35_MON_FRM_MASK,
 966                                         monitor_config->vbstmon_frm <<
 967                                         CS35L35_MON_FRM_SHIFT);
 968                 }
 969                 if (monitor_config->vpbrstat_specs) {
 970                         regmap_update_bits(cs35l35->regmap,
 971                                         CS35L35_SUPMON_DEPTH_CTL,
 972                                         CS35L35_VPBRSTAT_DEPTH_MASK,
 973                                         monitor_config->vpbrstat_dpth <<
 974                                         CS35L35_VPBRSTAT_DEPTH_SHIFT);
 975                         regmap_update_bits(cs35l35->regmap,
 976                                         CS35L35_VPBR_STATUS_TXLOC_CTL,
 977                                         CS35L35_MON_TXLOC_MASK,
 978                                         monitor_config->vpbrstat_loc <<
 979                                         CS35L35_MON_TXLOC_SHIFT);
 980                         regmap_update_bits(cs35l35->regmap,
 981                                         CS35L35_VPBR_STATUS_TXLOC_CTL,
 982                                         CS35L35_MON_FRM_MASK,
 983                                         monitor_config->vpbrstat_frm <<
 984                                         CS35L35_MON_FRM_SHIFT);
 985                 }
 986                 if (monitor_config->zerofill_specs) {
 987                         regmap_update_bits(cs35l35->regmap,
 988                                         CS35L35_SUPMON_DEPTH_CTL,
 989                                         CS35L35_ZEROFILL_DEPTH_MASK,
 990                                         monitor_config->zerofill_dpth <<
 991                                         CS35L35_ZEROFILL_DEPTH_SHIFT);
 992                         regmap_update_bits(cs35l35->regmap,
 993                                         CS35L35_ZERO_FILL_LOC_CTL,
 994                                         CS35L35_MON_TXLOC_MASK,
 995                                         monitor_config->zerofill_loc <<
 996                                         CS35L35_MON_TXLOC_SHIFT);
 997                         regmap_update_bits(cs35l35->regmap,
 998                                         CS35L35_ZERO_FILL_LOC_CTL,
 999                                         CS35L35_MON_FRM_MASK,
1000                                         monitor_config->zerofill_frm <<
1001                                         CS35L35_MON_FRM_SHIFT);
1002                 }
1003         }
1004
1005         return 0;
1006 }
1007
1008 static struct snd_soc_codec_driver soc_codec_dev_cs35l35 = {
1009         .probe = cs35l35_codec_probe,
1010         .set_sysclk = cs35l35_codec_set_sysclk,
1011         .component_driver = {
1012                 .dapm_widgets = cs35l35_dapm_widgets,
1013                 .num_dapm_widgets = ARRAY_SIZE(cs35l35_dapm_widgets),
1014
1015                 .dapm_routes = cs35l35_audio_map,
1016                 .num_dapm_routes = ARRAY_SIZE(cs35l35_audio_map),
1017
1018                 .controls = cs35l35_aud_controls,
1019                 .num_controls = ARRAY_SIZE(cs35l35_aud_controls),
1020         },
1021
1022 };
1023
1024 static struct regmap_config cs35l35_regmap = {
1025         .reg_bits = 8,
1026         .val_bits = 8,
1027
1028         .max_register = CS35L35_MAX_REGISTER,
1029         .reg_defaults = cs35l35_reg,
1030         .num_reg_defaults = ARRAY_SIZE(cs35l35_reg),
1031         .volatile_reg = cs35l35_volatile_register,
1032         .readable_reg = cs35l35_readable_register,
1033         .precious_reg = cs35l35_precious_register,
1034         .cache_type = REGCACHE_RBTREE,
1035 };
1036
1037 static irqreturn_t cs35l35_irq(int irq, void *data)
1038 {
1039         struct cs35l35_private *cs35l35 = data;
1040         unsigned int sticky1, sticky2, sticky3, sticky4;
1041         unsigned int mask1, mask2, mask3, mask4, current1;
1042
1043         /* ack the irq by reading all status registers */
1044         regmap_read(cs35l35->regmap, CS35L35_INT_STATUS_4, &sticky4);
1045         regmap_read(cs35l35->regmap, CS35L35_INT_STATUS_3, &sticky3);
1046         regmap_read(cs35l35->regmap, CS35L35_INT_STATUS_2, &sticky2);
1047         regmap_read(cs35l35->regmap, CS35L35_INT_STATUS_1, &sticky1);
1048
1049         regmap_read(cs35l35->regmap, CS35L35_INT_MASK_4, &mask4);
1050         regmap_read(cs35l35->regmap, CS35L35_INT_MASK_3, &mask3);
1051         regmap_read(cs35l35->regmap, CS35L35_INT_MASK_2, &mask2);
1052         regmap_read(cs35l35->regmap, CS35L35_INT_MASK_1, &mask1);
1053
1054         /* Check to see if unmasked bits are active */
1055         if (!(sticky1 & ~mask1) && !(sticky2 & ~mask2) && !(sticky3 & ~mask3)
1056                         && !(sticky4 & ~mask4))
1057                 return IRQ_NONE;
1058
1059         if (sticky2 & CS35L35_PDN_DONE)
1060                 complete(&cs35l35->pdn_done);
1061
1062         /* read the current values */
1063         regmap_read(cs35l35->regmap, CS35L35_INT_STATUS_1, &current1);
1064
1065         /* handle the interrupts */
1066         if (sticky1 & CS35L35_CAL_ERR) {
1067                 dev_crit(cs35l35->dev, "Calibration Error\n");
1068
1069                 /* error is no longer asserted; safe to reset */
1070                 if (!(current1 & CS35L35_CAL_ERR)) {
1071                         pr_debug("%s : Cal error release\n", __func__);
1072                         regmap_update_bits(cs35l35->regmap,
1073                                         CS35L35_PROT_RELEASE_CTL,
1074                                         CS35L35_CAL_ERR_RLS, 0);
1075                         regmap_update_bits(cs35l35->regmap,
1076                                         CS35L35_PROT_RELEASE_CTL,
1077                                         CS35L35_CAL_ERR_RLS,
1078                                         CS35L35_CAL_ERR_RLS);
1079                         regmap_update_bits(cs35l35->regmap,
1080                                         CS35L35_PROT_RELEASE_CTL,
1081                                         CS35L35_CAL_ERR_RLS, 0);
1082                 }
1083         }
1084
1085         if (sticky1 & CS35L35_AMP_SHORT) {
1086                 dev_crit(cs35l35->dev, "AMP Short Error\n");
1087                 /* error is no longer asserted; safe to reset */
1088                 if (!(current1 & CS35L35_AMP_SHORT)) {
1089                         dev_dbg(cs35l35->dev, "Amp short error release\n");
1090                         regmap_update_bits(cs35l35->regmap,
1091                                         CS35L35_PROT_RELEASE_CTL,
1092                                         CS35L35_SHORT_RLS, 0);
1093                         regmap_update_bits(cs35l35->regmap,
1094                                         CS35L35_PROT_RELEASE_CTL,
1095                                         CS35L35_SHORT_RLS,
1096                                         CS35L35_SHORT_RLS);
1097                         regmap_update_bits(cs35l35->regmap,
1098                                         CS35L35_PROT_RELEASE_CTL,
1099                                         CS35L35_SHORT_RLS, 0);
1100                 }
1101         }
1102
1103         if (sticky1 & CS35L35_OTW) {
1104                 dev_warn(cs35l35->dev, "Over temperature warning\n");
1105
1106                 /* error is no longer asserted; safe to reset */
1107                 if (!(current1 & CS35L35_OTW)) {
1108                         dev_dbg(cs35l35->dev, "Over temperature warn release\n");
1109                         regmap_update_bits(cs35l35->regmap,
1110                                         CS35L35_PROT_RELEASE_CTL,
1111                                         CS35L35_OTW_RLS, 0);
1112                         regmap_update_bits(cs35l35->regmap,
1113                                         CS35L35_PROT_RELEASE_CTL,
1114                                         CS35L35_OTW_RLS,
1115                                         CS35L35_OTW_RLS);
1116                         regmap_update_bits(cs35l35->regmap,
1117                                         CS35L35_PROT_RELEASE_CTL,
1118                                         CS35L35_OTW_RLS, 0);
1119                 }
1120         }
1121
1122         if (sticky1 & CS35L35_OTE) {
1123                 dev_crit(cs35l35->dev, "Over temperature error\n");
1124                 /* error is no longer asserted; safe to reset */
1125                 if (!(current1 & CS35L35_OTE)) {
1126                         dev_dbg(cs35l35->dev, "Over temperature error release\n");
1127                         regmap_update_bits(cs35l35->regmap,
1128                                         CS35L35_PROT_RELEASE_CTL,
1129                                         CS35L35_OTE_RLS, 0);
1130                         regmap_update_bits(cs35l35->regmap,
1131                                         CS35L35_PROT_RELEASE_CTL,
1132                                         CS35L35_OTE_RLS,
1133                                         CS35L35_OTE_RLS);
1134                         regmap_update_bits(cs35l35->regmap,
1135                                         CS35L35_PROT_RELEASE_CTL,
1136                                         CS35L35_OTE_RLS, 0);
1137                 }
1138         }
1139
1140         if (sticky3 & CS35L35_BST_HIGH) {
1141                 dev_crit(cs35l35->dev, "VBST error: powering off!\n");
1142                 regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL2,
1143                         CS35L35_PDN_AMP, CS35L35_PDN_AMP);
1144                 regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL1,
1145                         CS35L35_PDN_ALL, CS35L35_PDN_ALL);
1146         }
1147
1148         if (sticky3 & CS35L35_LBST_SHORT) {
1149                 dev_crit(cs35l35->dev, "LBST error: powering off!\n");
1150                 regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL2,
1151                         CS35L35_PDN_AMP, CS35L35_PDN_AMP);
1152                 regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL1,
1153                         CS35L35_PDN_ALL, CS35L35_PDN_ALL);
1154         }
1155
1156         if (sticky2 & CS35L35_VPBR_ERR)
1157                 dev_dbg(cs35l35->dev, "Error: Reactive Brownout\n");
1158
1159         if (sticky4 & CS35L35_VMON_OVFL)
1160                 dev_dbg(cs35l35->dev, "Error: VMON overflow\n");
1161
1162         if (sticky4 & CS35L35_IMON_OVFL)
1163                 dev_dbg(cs35l35->dev, "Error: IMON overflow\n");
1164
1165         return IRQ_HANDLED;
1166 }
1167
1168
1169 static int cs35l35_handle_of_data(struct i2c_client *i2c_client,
1170                                 struct cs35l35_platform_data *pdata)
1171 {
1172         struct device_node *np = i2c_client->dev.of_node;
1173         struct device_node *classh, *signal_format;
1174         struct classh_cfg *classh_config = &pdata->classh_algo;
1175         struct monitor_cfg *monitor_config = &pdata->mon_cfg;
1176         unsigned int val32 = 0;
1177         u8 monitor_array[4];
1178         const int imon_array_size = ARRAY_SIZE(monitor_array);
1179         const int mon_array_size = imon_array_size - 1;
1180         int ret = 0;
1181
1182         if (!np)
1183                 return 0;
1184
1185         pdata->bst_pdn_fet_on = of_property_read_bool(np,
1186                                         "cirrus,boost-pdn-fet-on");
1187
1188         ret = of_property_read_u32(np, "cirrus,boost-ctl-millivolt", &val32);
1189         if (ret >= 0) {
1190                 if (val32 < 2600 || val32 > 9000) {
1191                         dev_err(&i2c_client->dev,
1192                                 "Invalid Boost Voltage %d mV\n", val32);
1193                         return -EINVAL;
1194                 }
1195                 pdata->bst_vctl = ((val32 - 2600) / 100) + 1;
1196         }
1197
1198         ret = of_property_read_u32(np, "cirrus,boost-peak-milliamp", &val32);
1199         if (ret >= 0) {
1200                 if (val32 < 1680 || val32 > 4480) {
1201                         dev_err(&i2c_client->dev,
1202                                 "Invalid Boost Peak Current %u mA\n", val32);
1203                         return -EINVAL;
1204                 }
1205
1206                 pdata->bst_ipk = (val32 - 1680) / 110;
1207         }
1208
1209         if (of_property_read_u32(np, "cirrus,sp-drv-strength", &val32) >= 0)
1210                 pdata->sp_drv_str = val32;
1211         if (of_property_read_u32(np, "cirrus,sp-drv-unused", &val32) >= 0)
1212                 pdata->sp_drv_unused = val32 | CS35L35_VALID_PDATA;
1213
1214         pdata->stereo = of_property_read_bool(np, "cirrus,stereo-config");
1215
1216         if (pdata->stereo) {
1217                 ret = of_property_read_u32(np, "cirrus,audio-channel", &val32);
1218                 if (ret >= 0)
1219                         pdata->aud_channel = val32;
1220
1221                 ret = of_property_read_u32(np, "cirrus,advisory-channel",
1222                                            &val32);
1223                 if (ret >= 0)
1224                         pdata->adv_channel = val32;
1225
1226                 pdata->shared_bst = of_property_read_bool(np,
1227                                                 "cirrus,shared-boost");
1228         }
1229
1230         pdata->ext_bst = of_property_read_bool(np, "cirrus,external-boost");
1231
1232         pdata->gain_zc = of_property_read_bool(np, "cirrus,amp-gain-zc");
1233
1234         classh = of_get_child_by_name(np, "cirrus,classh-internal-algo");
1235         classh_config->classh_algo_enable = classh ? true : false;
1236
1237         if (classh_config->classh_algo_enable) {
1238                 classh_config->classh_bst_override =
1239                         of_property_read_bool(np, "cirrus,classh-bst-overide");
1240
1241                 ret = of_property_read_u32(classh,
1242                                            "cirrus,classh-bst-max-limit",
1243                                            &val32);
1244                 if (ret >= 0) {
1245                         val32 |= CS35L35_VALID_PDATA;
1246                         classh_config->classh_bst_max_limit = val32;
1247                 }
1248
1249                 ret = of_property_read_u32(classh,
1250                                            "cirrus,classh-bst-max-limit",
1251                                            &val32);
1252                 if (ret >= 0) {
1253                         val32 |= CS35L35_VALID_PDATA;
1254                         classh_config->classh_bst_max_limit = val32;
1255                 }
1256
1257                 ret = of_property_read_u32(classh, "cirrus,classh-mem-depth",
1258                                            &val32);
1259                 if (ret >= 0) {
1260                         val32 |= CS35L35_VALID_PDATA;
1261                         classh_config->classh_mem_depth = val32;
1262                 }
1263
1264                 ret = of_property_read_u32(classh, "cirrus,classh-release-rate",
1265                                            &val32);
1266                 if (ret >= 0)
1267                         classh_config->classh_release_rate = val32;
1268
1269                 ret = of_property_read_u32(classh, "cirrus,classh-headroom",
1270                                            &val32);
1271                 if (ret >= 0) {
1272                         val32 |= CS35L35_VALID_PDATA;
1273                         classh_config->classh_headroom = val32;
1274                 }
1275
1276                 ret = of_property_read_u32(classh,
1277                                            "cirrus,classh-wk-fet-disable",
1278                                            &val32);
1279                 if (ret >= 0)
1280                         classh_config->classh_wk_fet_disable = val32;
1281
1282                 ret = of_property_read_u32(classh, "cirrus,classh-wk-fet-delay",
1283                                            &val32);
1284                 if (ret >= 0) {
1285                         val32 |= CS35L35_VALID_PDATA;
1286                         classh_config->classh_wk_fet_delay = val32;
1287                 }
1288
1289                 ret = of_property_read_u32(classh, "cirrus,classh-wk-fet-thld",
1290                                            &val32);
1291                 if (ret >= 0)
1292                         classh_config->classh_wk_fet_thld = val32;
1293
1294                 ret = of_property_read_u32(classh, "cirrus,classh-vpch-auto",
1295                                            &val32);
1296                 if (ret >= 0) {
1297                         val32 |= CS35L35_VALID_PDATA;
1298                         classh_config->classh_vpch_auto = val32;
1299                 }
1300
1301                 ret = of_property_read_u32(classh, "cirrus,classh-vpch-rate",
1302                                            &val32);
1303                 if (ret >= 0) {
1304                         val32 |= CS35L35_VALID_PDATA;
1305                         classh_config->classh_vpch_rate = val32;
1306                 }
1307
1308                 ret = of_property_read_u32(classh, "cirrus,classh-vpch-man",
1309                                            &val32);
1310                 if (ret >= 0)
1311                         classh_config->classh_vpch_man = val32;
1312         }
1313         of_node_put(classh);
1314
1315         /* frame depth location */
1316         signal_format = of_get_child_by_name(np, "cirrus,monitor-signal-format");
1317         monitor_config->is_present = signal_format ? true : false;
1318         if (monitor_config->is_present) {
1319                 ret = of_property_read_u8_array(signal_format, "cirrus,imon",
1320                                                 monitor_array, imon_array_size);
1321                 if (!ret) {
1322                         monitor_config->imon_specs = true;
1323                         monitor_config->imon_dpth = monitor_array[0];
1324                         monitor_config->imon_loc = monitor_array[1];
1325                         monitor_config->imon_frm = monitor_array[2];
1326                         monitor_config->imon_scale = monitor_array[3];
1327                 }
1328                 ret = of_property_read_u8_array(signal_format, "cirrus,vmon",
1329                                                 monitor_array, mon_array_size);
1330                 if (!ret) {
1331                         monitor_config->vmon_specs = true;
1332                         monitor_config->vmon_dpth = monitor_array[0];
1333                         monitor_config->vmon_loc = monitor_array[1];
1334                         monitor_config->vmon_frm = monitor_array[2];
1335                 }
1336                 ret = of_property_read_u8_array(signal_format, "cirrus,vpmon",
1337                                                 monitor_array, mon_array_size);
1338                 if (!ret) {
1339                         monitor_config->vpmon_specs = true;
1340                         monitor_config->vpmon_dpth = monitor_array[0];
1341                         monitor_config->vpmon_loc = monitor_array[1];
1342                         monitor_config->vpmon_frm = monitor_array[2];
1343                 }
1344                 ret = of_property_read_u8_array(signal_format, "cirrus,vbstmon",
1345                                                 monitor_array, mon_array_size);
1346                 if (!ret) {
1347                         monitor_config->vbstmon_specs = true;
1348                         monitor_config->vbstmon_dpth = monitor_array[0];
1349                         monitor_config->vbstmon_loc = monitor_array[1];
1350                         monitor_config->vbstmon_frm = monitor_array[2];
1351                 }
1352                 ret = of_property_read_u8_array(signal_format, "cirrus,vpbrstat",
1353                                                 monitor_array, mon_array_size);
1354                 if (!ret) {
1355                         monitor_config->vpbrstat_specs = true;
1356                         monitor_config->vpbrstat_dpth = monitor_array[0];
1357                         monitor_config->vpbrstat_loc = monitor_array[1];
1358                         monitor_config->vpbrstat_frm = monitor_array[2];
1359                 }
1360                 ret = of_property_read_u8_array(signal_format, "cirrus,zerofill",
1361                                                 monitor_array, mon_array_size);
1362                 if (!ret) {
1363                         monitor_config->zerofill_specs = true;
1364                         monitor_config->zerofill_dpth = monitor_array[0];
1365                         monitor_config->zerofill_loc = monitor_array[1];
1366                         monitor_config->zerofill_frm = monitor_array[2];
1367                 }
1368         }
1369         of_node_put(signal_format);
1370
1371         return 0;
1372 }
1373
1374 /* Errata Rev A0 */
1375 static const struct reg_sequence cs35l35_errata_patch[] = {
1376
1377         { 0x7F, 0x99 },
1378         { 0x00, 0x99 },
1379         { 0x52, 0x22 },
1380         { 0x04, 0x14 },
1381         { 0x6D, 0x44 },
1382         { 0x24, 0x10 },
1383         { 0x58, 0xC4 },
1384         { 0x00, 0x98 },
1385         { 0x18, 0x08 },
1386         { 0x00, 0x00 },
1387         { 0x7F, 0x00 },
1388 };
1389
1390 static int cs35l35_i2c_probe(struct i2c_client *i2c_client,
1391                               const struct i2c_device_id *id)
1392 {
1393         struct cs35l35_private *cs35l35;
1394         struct device *dev = &i2c_client->dev;
1395         struct cs35l35_platform_data *pdata = dev_get_platdata(dev);
1396         int i;
1397         int ret;
1398         unsigned int devid = 0;
1399         unsigned int reg;
1400
1401         cs35l35 = devm_kzalloc(dev, sizeof(struct cs35l35_private), GFP_KERNEL);
1402         if (!cs35l35)
1403                 return -ENOMEM;
1404
1405         cs35l35->dev = dev;
1406
1407         i2c_set_clientdata(i2c_client, cs35l35);
1408         cs35l35->regmap = devm_regmap_init_i2c(i2c_client, &cs35l35_regmap);
1409         if (IS_ERR(cs35l35->regmap)) {
1410                 ret = PTR_ERR(cs35l35->regmap);
1411                 dev_err(dev, "regmap_init() failed: %d\n", ret);
1412                 goto err;
1413         }
1414
1415         for (i = 0; i < ARRAY_SIZE(cs35l35_supplies); i++)
1416                 cs35l35->supplies[i].supply = cs35l35_supplies[i];
1417
1418         cs35l35->num_supplies = ARRAY_SIZE(cs35l35_supplies);
1419
1420         ret = devm_regulator_bulk_get(dev, cs35l35->num_supplies,
1421                                       cs35l35->supplies);
1422         if (ret != 0) {
1423                 dev_err(dev, "Failed to request core supplies: %d\n", ret);
1424                 return ret;
1425         }
1426
1427         if (pdata) {
1428                 cs35l35->pdata = *pdata;
1429         } else {
1430                 pdata = devm_kzalloc(dev, sizeof(struct cs35l35_platform_data),
1431                                      GFP_KERNEL);
1432                 if (!pdata)
1433                         return -ENOMEM;
1434                 if (i2c_client->dev.of_node) {
1435                         ret = cs35l35_handle_of_data(i2c_client, pdata);
1436                         if (ret != 0)
1437                                 return ret;
1438
1439                 }
1440                 cs35l35->pdata = *pdata;
1441         }
1442
1443         ret = regulator_bulk_enable(cs35l35->num_supplies,
1444                                         cs35l35->supplies);
1445         if (ret != 0) {
1446                 dev_err(dev, "Failed to enable core supplies: %d\n", ret);
1447                 return ret;
1448         }
1449
1450         /* returning NULL can be valid if in stereo mode */
1451         cs35l35->reset_gpio = devm_gpiod_get_optional(dev, "reset",
1452                                                       GPIOD_OUT_LOW);
1453         if (IS_ERR(cs35l35->reset_gpio)) {
1454                 ret = PTR_ERR(cs35l35->reset_gpio);
1455                 cs35l35->reset_gpio = NULL;
1456                 if (ret == -EBUSY) {
1457                         dev_info(dev,
1458                                  "Reset line busy, assuming shared reset\n");
1459                 } else {
1460                         dev_err(dev, "Failed to get reset GPIO: %d\n", ret);
1461                         goto err;
1462                 }
1463         }
1464
1465         cs35l35_reset(cs35l35);
1466
1467         init_completion(&cs35l35->pdn_done);
1468
1469         ret = devm_request_threaded_irq(dev, i2c_client->irq, NULL, cs35l35_irq,
1470                                         IRQF_ONESHOT | IRQF_TRIGGER_LOW |
1471                                         IRQF_SHARED, "cs35l35", cs35l35);
1472         if (ret != 0) {
1473                 dev_err(dev, "Failed to request IRQ: %d\n", ret);
1474                 goto err;
1475         }
1476         /* initialize codec */
1477         ret = regmap_read(cs35l35->regmap, CS35L35_DEVID_AB, &reg);
1478
1479         devid = (reg & 0xFF) << 12;
1480         ret = regmap_read(cs35l35->regmap, CS35L35_DEVID_CD, &reg);
1481         devid |= (reg & 0xFF) << 4;
1482         ret = regmap_read(cs35l35->regmap, CS35L35_DEVID_E, &reg);
1483         devid |= (reg & 0xF0) >> 4;
1484
1485         if (devid != CS35L35_CHIP_ID) {
1486                 dev_err(dev, "CS35L35 Device ID (%X). Expected ID %X\n",
1487                         devid, CS35L35_CHIP_ID);
1488                 ret = -ENODEV;
1489                 goto err;
1490         }
1491
1492         ret = regmap_read(cs35l35->regmap, CS35L35_REV_ID, &reg);
1493         if (ret < 0) {
1494                 dev_err(dev, "Get Revision ID failed: %d\n", ret);
1495                 goto err;
1496         }
1497
1498         ret = regmap_register_patch(cs35l35->regmap, cs35l35_errata_patch,
1499                                     ARRAY_SIZE(cs35l35_errata_patch));
1500         if (ret < 0) {
1501                 dev_err(dev, "Failed to apply errata patch: %d\n", ret);
1502                 goto err;
1503         }
1504
1505         dev_info(dev, "Cirrus Logic CS35L35 (%x), Revision: %02X\n",
1506                  devid, reg & 0xFF);
1507
1508         /* Set the INT Masks for critical errors */
1509         regmap_write(cs35l35->regmap, CS35L35_INT_MASK_1,
1510                                 CS35L35_INT1_CRIT_MASK);
1511         regmap_write(cs35l35->regmap, CS35L35_INT_MASK_2,
1512                                 CS35L35_INT2_CRIT_MASK);
1513         regmap_write(cs35l35->regmap, CS35L35_INT_MASK_3,
1514                                 CS35L35_INT3_CRIT_MASK);
1515         regmap_write(cs35l35->regmap, CS35L35_INT_MASK_4,
1516                                 CS35L35_INT4_CRIT_MASK);
1517
1518         regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL2,
1519                         CS35L35_PWR2_PDN_MASK,
1520                         CS35L35_PWR2_PDN_MASK);
1521
1522         if (cs35l35->pdata.bst_pdn_fet_on)
1523                 regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL2,
1524                                         CS35L35_PDN_BST_MASK,
1525                                         1 << CS35L35_PDN_BST_FETON_SHIFT);
1526         else
1527                 regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL2,
1528                                         CS35L35_PDN_BST_MASK,
1529                                         1 << CS35L35_PDN_BST_FETOFF_SHIFT);
1530
1531         regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL3,
1532                         CS35L35_PWR3_PDN_MASK,
1533                         CS35L35_PWR3_PDN_MASK);
1534
1535         regmap_update_bits(cs35l35->regmap, CS35L35_PROTECT_CTL,
1536                 CS35L35_AMP_MUTE_MASK, 1 << CS35L35_AMP_MUTE_SHIFT);
1537
1538         ret =  snd_soc_register_codec(dev, &soc_codec_dev_cs35l35, cs35l35_dai,
1539                                       ARRAY_SIZE(cs35l35_dai));
1540         if (ret < 0) {
1541                 dev_err(dev, "Failed to register codec: %d\n", ret);
1542                 goto err;
1543         }
1544
1545         return 0;
1546
1547 err:
1548         regulator_bulk_disable(cs35l35->num_supplies,
1549                                cs35l35->supplies);
1550         gpiod_set_value_cansleep(cs35l35->reset_gpio, 0);
1551
1552         return ret;
1553 }
1554
1555 static int cs35l35_i2c_remove(struct i2c_client *client)
1556 {
1557         snd_soc_unregister_codec(&client->dev);
1558         return 0;
1559 }
1560
1561 static const struct of_device_id cs35l35_of_match[] = {
1562         {.compatible = "cirrus,cs35l35"},
1563         {},
1564 };
1565 MODULE_DEVICE_TABLE(of, cs35l35_of_match);
1566
1567 static const struct i2c_device_id cs35l35_id[] = {
1568         {"cs35l35", 0},
1569         {}
1570 };
1571
1572 MODULE_DEVICE_TABLE(i2c, cs35l35_id);
1573
1574 static struct i2c_driver cs35l35_i2c_driver = {
1575         .driver = {
1576                 .name = "cs35l35",
1577                 .of_match_table = cs35l35_of_match,
1578         },
1579         .id_table = cs35l35_id,
1580         .probe = cs35l35_i2c_probe,
1581         .remove = cs35l35_i2c_remove,
1582 };
1583
1584 module_i2c_driver(cs35l35_i2c_driver);
1585
1586 MODULE_DESCRIPTION("ASoC CS35L35 driver");
1587 MODULE_AUTHOR("Brian Austin, Cirrus Logic Inc, <brian.austin@cirrus.com>");
1588 MODULE_LICENSE("GPL");