sound/soc/codecs/cs4265.c

   1 /*
   2  * cs4265.c -- CS4265 ALSA SoC audio driver
   3  *
   4  * Copyright 2014 Cirrus Logic, Inc.
   5  *
   6  * Author: Paul Handrigan <paul.handrigan@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/kernel.h>
  17 #include <linux/gpio/consumer.h>
  18 #include <linux/init.h>
  19 #include <linux/delay.h>
  20 #include <linux/i2c.h>
  21 #include <linux/input.h>
  22 #include <linux/regmap.h>
  23 #include <linux/slab.h>
  24 #include <linux/platform_device.h>
  25 #include <sound/core.h>
  26 #include <sound/pcm.h>
  27 #include <sound/pcm_params.h>
  28 #include <sound/soc.h>
  29 #include <sound/soc-dapm.h>
  30 #include <sound/initval.h>
  31 #include <sound/tlv.h>
  32 #include "cs4265.h"
  33
  34 struct cs4265_private {
  35         struct regmap *regmap;
  36         struct gpio_desc *reset_gpio;
  37         u8 format;
  38         u32 sysclk;
  39 };
  40
  41 static const struct reg_default cs4265_reg_defaults[] = {
  42         { CS4265_PWRCTL, 0x0F },
  43         { CS4265_DAC_CTL, 0x08 },
  44         { CS4265_ADC_CTL, 0x00 },
  45         { CS4265_MCLK_FREQ, 0x00 },
  46         { CS4265_SIG_SEL, 0x40 },
  47         { CS4265_CHB_PGA_CTL, 0x00 },
  48         { CS4265_CHA_PGA_CTL, 0x00 },
  49         { CS4265_ADC_CTL2, 0x19 },
  50         { CS4265_DAC_CHA_VOL, 0x00 },
  51         { CS4265_DAC_CHB_VOL, 0x00 },
  52         { CS4265_DAC_CTL2, 0xC0 },
  53         { CS4265_SPDIF_CTL1, 0x00 },
  54         { CS4265_SPDIF_CTL2, 0x00 },
  55         { CS4265_INT_MASK, 0x00 },
  56         { CS4265_STATUS_MODE_MSB, 0x00 },
  57         { CS4265_STATUS_MODE_LSB, 0x00 },
  58 };
  59
  60 static bool cs4265_readable_register(struct device *dev, unsigned int reg)
  61 {
  62         switch (reg) {
  63         case CS4265_PWRCTL:
  64         case CS4265_DAC_CTL:
  65         case CS4265_ADC_CTL:
  66         case CS4265_MCLK_FREQ:
  67         case CS4265_SIG_SEL:
  68         case CS4265_CHB_PGA_CTL:
  69         case CS4265_CHA_PGA_CTL:
  70         case CS4265_ADC_CTL2:
  71         case CS4265_DAC_CHA_VOL:
  72         case CS4265_DAC_CHB_VOL:
  73         case CS4265_DAC_CTL2:
  74         case CS4265_SPDIF_CTL1:
  75         case CS4265_SPDIF_CTL2:
  76         case CS4265_INT_MASK:
  77         case CS4265_STATUS_MODE_MSB:
  78         case CS4265_STATUS_MODE_LSB:
  79         case CS4265_CHIP_ID:
  80                 return true;
  81         default:
  82                 return false;
  83         }
  84 }
  85
  86 static bool cs4265_volatile_register(struct device *dev, unsigned int reg)
  87 {
  88         switch (reg) {
  89         case CS4265_INT_STATUS:
  90                 return true;
  91         default:
  92                 return false;
  93         }
  94 }
  95
  96 static DECLARE_TLV_DB_SCALE(pga_tlv, -1200, 50, 0);
  97
  98 static DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 0);
  99
 100 static const char * const digital_input_mux_text[] = {
 101         "SDIN1", "SDIN2"
 102 };
 103
 104 static SOC_ENUM_SINGLE_DECL(digital_input_mux_enum, CS4265_SIG_SEL, 7,
 105                 digital_input_mux_text);
 106
 107 static const struct snd_kcontrol_new digital_input_mux =
 108         SOC_DAPM_ENUM("Digital Input Mux", digital_input_mux_enum);
 109
 110 static const char * const mic_linein_text[] = {
 111         "MIC", "LINEIN"
 112 };
 113
 114 static SOC_ENUM_SINGLE_DECL(mic_linein_enum, CS4265_ADC_CTL2, 0,
 115                 mic_linein_text);
 116
 117 static const char * const cam_mode_text[] = {
 118         "One Byte", "Two Byte"
 119 };
 120
 121 static SOC_ENUM_SINGLE_DECL(cam_mode_enum, CS4265_SPDIF_CTL1, 5,
 122                 cam_mode_text);
 123
 124 static const char * const cam_mono_stereo_text[] = {
 125         "Stereo", "Mono"
 126 };
 127
 128 static SOC_ENUM_SINGLE_DECL(spdif_mono_stereo_enum, CS4265_SPDIF_CTL2, 2,
 129                 cam_mono_stereo_text);
 130
 131 static const char * const mono_select_text[] = {
 132         "Channel A", "Channel B"
 133 };
 134
 135 static SOC_ENUM_SINGLE_DECL(spdif_mono_select_enum, CS4265_SPDIF_CTL2, 0,
 136                 mono_select_text);
 137
 138 static const struct snd_kcontrol_new mic_linein_mux =
 139         SOC_DAPM_ENUM("ADC Input Capture Mux", mic_linein_enum);
 140
 141 static const struct snd_kcontrol_new loopback_ctl =
 142         SOC_DAPM_SINGLE("Switch", CS4265_SIG_SEL, 1, 1, 0);
 143
 144 static const struct snd_kcontrol_new spdif_switch =
 145         SOC_DAPM_SINGLE("Switch", SND_SOC_NOPM, 0, 0, 0);
 146
 147 static const struct snd_kcontrol_new dac_switch =
 148         SOC_DAPM_SINGLE("Switch", CS4265_PWRCTL, 1, 1, 0);
 149
 150 static const struct snd_kcontrol_new cs4265_snd_controls[] = {
 151
 152         SOC_DOUBLE_R_SX_TLV("PGA Volume", CS4265_CHA_PGA_CTL,
 153                               CS4265_CHB_PGA_CTL, 0, 0x28, 0x30, pga_tlv),
 154         SOC_DOUBLE_R_TLV("DAC Volume", CS4265_DAC_CHA_VOL,
 155                       CS4265_DAC_CHB_VOL, 0, 0xFF, 1, dac_tlv),
 156         SOC_SINGLE("De-emp 44.1kHz Switch", CS4265_DAC_CTL, 1,
 157                                 1, 0),
 158         SOC_SINGLE("DAC INV Switch", CS4265_DAC_CTL2, 5,
 159                                 1, 0),
 160         SOC_SINGLE("DAC Zero Cross Switch", CS4265_DAC_CTL2, 6,
 161                                 1, 0),
 162         SOC_SINGLE("DAC Soft Ramp Switch", CS4265_DAC_CTL2, 7,
 163                                 1, 0),
 164         SOC_SINGLE("ADC HPF Switch", CS4265_ADC_CTL, 1,
 165                                 1, 0),
 166         SOC_SINGLE("ADC Zero Cross Switch", CS4265_ADC_CTL2, 3,
 167                                 1, 1),
 168         SOC_SINGLE("ADC Soft Ramp Switch", CS4265_ADC_CTL2, 7,
 169                                 1, 0),
 170         SOC_SINGLE("E to F Buffer Disable Switch", CS4265_SPDIF_CTL1,
 171                                 6, 1, 0),
 172         SOC_ENUM("C Data Access", cam_mode_enum),
 173         SOC_SINGLE("Validity Bit Control Switch", CS4265_SPDIF_CTL2,
 174                                 3, 1, 0),
 175         SOC_ENUM("SPDIF Mono/Stereo", spdif_mono_stereo_enum),
 176         SOC_SINGLE("MMTLR Data Switch", 0,
 177                                 1, 1, 0),
 178         SOC_ENUM("Mono Channel Select", spdif_mono_select_enum),
 179         SND_SOC_BYTES("C Data Buffer", CS4265_C_DATA_BUFF, 24),
 180 };
 181
 182 static const struct snd_soc_dapm_widget cs4265_dapm_widgets[] = {
 183
 184         SND_SOC_DAPM_INPUT("LINEINL"),
 185         SND_SOC_DAPM_INPUT("LINEINR"),
 186         SND_SOC_DAPM_INPUT("MICL"),
 187         SND_SOC_DAPM_INPUT("MICR"),
 188
 189         SND_SOC_DAPM_AIF_OUT("DOUT", NULL,  0,
 190                         SND_SOC_NOPM, 0, 0),
 191         SND_SOC_DAPM_AIF_OUT("SPDIFOUT", NULL,  0,
 192                         SND_SOC_NOPM, 0, 0),
 193
 194         SND_SOC_DAPM_MUX("ADC Mux", SND_SOC_NOPM, 0, 0, &mic_linein_mux),
 195
 196         SND_SOC_DAPM_ADC("ADC", NULL, CS4265_PWRCTL, 2, 1),
 197         SND_SOC_DAPM_PGA("Pre-amp MIC", CS4265_PWRCTL, 3,
 198                         1, NULL, 0),
 199
 200         SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM,
 201                          0, 0, &digital_input_mux),
 202
 203         SND_SOC_DAPM_MIXER("SDIN1 Input Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
 204         SND_SOC_DAPM_MIXER("SDIN2 Input Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
 205         SND_SOC_DAPM_MIXER("SPDIF Transmitter", SND_SOC_NOPM, 0, 0, NULL, 0),
 206
 207         SND_SOC_DAPM_SWITCH("Loopback", SND_SOC_NOPM, 0, 0,
 208                         &loopback_ctl),
 209         SND_SOC_DAPM_SWITCH("SPDIF", SND_SOC_NOPM, 0, 0,
 210                         &spdif_switch),
 211         SND_SOC_DAPM_SWITCH("DAC", CS4265_PWRCTL, 1, 1,
 212                         &dac_switch),
 213
 214         SND_SOC_DAPM_AIF_IN("DIN1", NULL,  0,
 215                         SND_SOC_NOPM, 0, 0),
 216         SND_SOC_DAPM_AIF_IN("DIN2", NULL,  0,
 217                         SND_SOC_NOPM, 0, 0),
 218         SND_SOC_DAPM_AIF_IN("TXIN", NULL,  0,
 219                         CS4265_SPDIF_CTL2, 5, 1),
 220
 221         SND_SOC_DAPM_OUTPUT("LINEOUTL"),
 222         SND_SOC_DAPM_OUTPUT("LINEOUTR"),
 223
 224 };
 225
 226 static const struct snd_soc_dapm_route cs4265_audio_map[] = {
 227
 228         {"DIN1", NULL, "DAI1 Playback"},
 229         {"DIN2", NULL, "DAI2 Playback"},
 230         {"SDIN1 Input Mixer", NULL, "DIN1"},
 231         {"SDIN2 Input Mixer", NULL, "DIN2"},
 232         {"Input Mux", "SDIN1", "SDIN1 Input Mixer"},
 233         {"Input Mux", "SDIN2", "SDIN2 Input Mixer"},
 234         {"DAC", "Switch", "Input Mux"},
 235         {"SPDIF", "Switch", "Input Mux"},
 236         {"LINEOUTL", NULL, "DAC"},
 237         {"LINEOUTR", NULL, "DAC"},
 238         {"SPDIFOUT", NULL, "SPDIF"},
 239
 240         {"ADC Mux", "LINEIN", "LINEINL"},
 241         {"ADC Mux", "LINEIN", "LINEINR"},
 242         {"ADC Mux", "MIC", "MICL"},
 243         {"ADC Mux", "MIC", "MICR"},
 244         {"ADC", NULL, "ADC Mux"},
 245         {"DOUT", NULL, "ADC"},
 246         {"DAI1 Capture", NULL, "DOUT"},
 247         {"DAI2 Capture", NULL, "DOUT"},
 248
 249         /* Loopback */
 250         {"Loopback", "Switch", "ADC"},
 251         {"DAC", NULL, "Loopback"},
 252 };
 253
 254 struct cs4265_clk_para {
 255         u32 mclk;
 256         u32 rate;
 257         u8 fm_mode; /* values 1, 2, or 4 */
 258         u8 mclkdiv;
 259 };
 260
 261 static const struct cs4265_clk_para clk_map_table[] = {
 262         /*32k*/
 263         {8192000, 32000, 0, 0},
 264         {12288000, 32000, 0, 1},
 265         {16384000, 32000, 0, 2},
 266         {24576000, 32000, 0, 3},
 267         {32768000, 32000, 0, 4},
 268
 269         /*44.1k*/
 270         {11289600, 44100, 0, 0},
 271         {16934400, 44100, 0, 1},
 272         {22579200, 44100, 0, 2},
 273         {33868000, 44100, 0, 3},
 274         {45158400, 44100, 0, 4},
 275
 276         /*48k*/
 277         {12288000, 48000, 0, 0},
 278         {18432000, 48000, 0, 1},
 279         {24576000, 48000, 0, 2},
 280         {36864000, 48000, 0, 3},
 281         {49152000, 48000, 0, 4},
 282
 283         /*64k*/
 284         {8192000, 64000, 1, 0},
 285         {12288000, 64000, 1, 1},
 286         {16934400, 64000, 1, 2},
 287         {24576000, 64000, 1, 3},
 288         {32768000, 64000, 1, 4},
 289
 290         /* 88.2k */
 291         {11289600, 88200, 1, 0},
 292         {16934400, 88200, 1, 1},
 293         {22579200, 88200, 1, 2},
 294         {33868000, 88200, 1, 3},
 295         {45158400, 88200, 1, 4},
 296
 297         /* 96k */
 298         {12288000, 96000, 1, 0},
 299         {18432000, 96000, 1, 1},
 300         {24576000, 96000, 1, 2},
 301         {36864000, 96000, 1, 3},
 302         {49152000, 96000, 1, 4},
 303
 304         /* 128k */
 305         {8192000, 128000, 2, 0},
 306         {12288000, 128000, 2, 1},
 307         {16934400, 128000, 2, 2},
 308         {24576000, 128000, 2, 3},
 309         {32768000, 128000, 2, 4},
 310
 311         /* 176.4k */
 312         {11289600, 176400, 2, 0},
 313         {16934400, 176400, 2, 1},
 314         {22579200, 176400, 2, 2},
 315         {33868000, 176400, 2, 3},
 316         {49152000, 176400, 2, 4},
 317
 318         /* 192k */
 319         {12288000, 192000, 2, 0},
 320         {18432000, 192000, 2, 1},
 321         {24576000, 192000, 2, 2},
 322         {36864000, 192000, 2, 3},
 323         {49152000, 192000, 2, 4},
 324 };
 325
 326 static int cs4265_get_clk_index(int mclk, int rate)
 327 {
 328         int i;
 329
 330         for (i = 0; i < ARRAY_SIZE(clk_map_table); i++) {
 331                 if (clk_map_table[i].rate == rate &&
 332                                 clk_map_table[i].mclk == mclk)
 333                         return i;
 334         }
 335         return -EINVAL;
 336 }
 337
 338 static int cs4265_set_sysclk(struct snd_soc_dai *codec_dai, int clk_id,
 339                         unsigned int freq, int dir)
 340 {
 341         struct snd_soc_codec *codec = codec_dai->codec;
 342         struct cs4265_private *cs4265 = snd_soc_codec_get_drvdata(codec);
 343         int i;
 344
 345         if (clk_id != 0) {
 346                 dev_err(codec->dev, "Invalid clk_id %d\n", clk_id);
 347                 return -EINVAL;
 348         }
 349         for (i = 0; i < ARRAY_SIZE(clk_map_table); i++) {
 350                 if (clk_map_table[i].mclk == freq) {
 351                         cs4265->sysclk = freq;
 352                         return 0;
 353                 }
 354         }
 355         cs4265->sysclk = 0;
 356         dev_err(codec->dev, "Invalid freq parameter %d\n", freq);
 357         return -EINVAL;
 358 }
 359
 360 static int cs4265_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
 361 {
 362         struct snd_soc_codec *codec = codec_dai->codec;
 363         struct cs4265_private *cs4265 = snd_soc_codec_get_drvdata(codec);
 364         u8 iface = 0;
 365
 366         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 367         case SND_SOC_DAIFMT_CBM_CFM:
 368                 snd_soc_update_bits(codec, CS4265_ADC_CTL,
 369                                 CS4265_ADC_MASTER,
 370                                 CS4265_ADC_MASTER);
 371                 break;
 372         case SND_SOC_DAIFMT_CBS_CFS:
 373                 snd_soc_update_bits(codec, CS4265_ADC_CTL,
 374                                 CS4265_ADC_MASTER,
 375                                 0);
 376                 break;
 377         default:
 378                 return -EINVAL;
 379         }
 380
 381          /* interface format */
 382         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 383         case SND_SOC_DAIFMT_I2S:
 384                 iface |= SND_SOC_DAIFMT_I2S;
 385                 break;
 386         case SND_SOC_DAIFMT_RIGHT_J:
 387                 iface |= SND_SOC_DAIFMT_RIGHT_J;
 388                 break;
 389         case SND_SOC_DAIFMT_LEFT_J:
 390                 iface |= SND_SOC_DAIFMT_LEFT_J;
 391                 break;
 392         default:
 393                 return -EINVAL;
 394         }
 395
 396         cs4265->format = iface;
 397         return 0;
 398 }
 399
 400 static int cs4265_digital_mute(struct snd_soc_dai *dai, int mute)
 401 {
 402         struct snd_soc_codec *codec = dai->codec;
 403
 404         if (mute) {
 405                 snd_soc_update_bits(codec, CS4265_DAC_CTL,
 406                         CS4265_DAC_CTL_MUTE,
 407                         CS4265_DAC_CTL_MUTE);
 408                 snd_soc_update_bits(codec, CS4265_SPDIF_CTL2,
 409                         CS4265_SPDIF_CTL2_MUTE,
 410                         CS4265_SPDIF_CTL2_MUTE);
 411         } else {
 412                 snd_soc_update_bits(codec, CS4265_DAC_CTL,
 413                         CS4265_DAC_CTL_MUTE,
 414                         0);
 415                 snd_soc_update_bits(codec, CS4265_SPDIF_CTL2,
 416                         CS4265_SPDIF_CTL2_MUTE,
 417                         0);
 418         }
 419         return 0;
 420 }
 421
 422 static int cs4265_pcm_hw_params(struct snd_pcm_substream *substream,
 423                                      struct snd_pcm_hw_params *params,
 424                                      struct snd_soc_dai *dai)
 425 {
 426         struct snd_soc_codec *codec = dai->codec;
 427         struct cs4265_private *cs4265 = snd_soc_codec_get_drvdata(codec);
 428         int index;
 429
 430         if (substream->stream == SNDRV_PCM_STREAM_CAPTURE &&
 431                 ((cs4265->format & SND_SOC_DAIFMT_FORMAT_MASK)
 432                 == SND_SOC_DAIFMT_RIGHT_J))
 433                 return -EINVAL;
 434
 435         index = cs4265_get_clk_index(cs4265->sysclk, params_rate(params));
 436         if (index >= 0) {
 437                 snd_soc_update_bits(codec, CS4265_ADC_CTL,
 438                         CS4265_ADC_FM, clk_map_table[index].fm_mode << 6);
 439                 snd_soc_update_bits(codec, CS4265_MCLK_FREQ,
 440                         CS4265_MCLK_FREQ_MASK,
 441                         clk_map_table[index].mclkdiv << 4);
 442
 443         } else {
 444                 dev_err(codec->dev, "can't get correct mclk\n");
 445                 return -EINVAL;
 446         }
 447
 448         switch (cs4265->format & SND_SOC_DAIFMT_FORMAT_MASK) {
 449         case SND_SOC_DAIFMT_I2S:
 450                 snd_soc_update_bits(codec, CS4265_DAC_CTL,
 451                         CS4265_DAC_CTL_DIF, (1 << 4));
 452                 snd_soc_update_bits(codec, CS4265_ADC_CTL,
 453                         CS4265_ADC_DIF, (1 << 4));
 454                 snd_soc_update_bits(codec, CS4265_SPDIF_CTL2,
 455                         CS4265_SPDIF_CTL2_DIF, (1 << 6));
 456                 break;
 457         case SND_SOC_DAIFMT_RIGHT_J:
 458                 if (params_width(params) == 16) {
 459                         snd_soc_update_bits(codec, CS4265_DAC_CTL,
 460                                 CS4265_DAC_CTL_DIF, (1 << 5));
 461                         snd_soc_update_bits(codec, CS4265_SPDIF_CTL2,
 462                                 CS4265_SPDIF_CTL2_DIF, (1 << 7));
 463                 } else {
 464                         snd_soc_update_bits(codec, CS4265_DAC_CTL,
 465                                 CS4265_DAC_CTL_DIF, (3 << 5));
 466                         snd_soc_update_bits(codec, CS4265_SPDIF_CTL2,
 467                                 CS4265_SPDIF_CTL2_DIF, (1 << 7));
 468                 }
 469                 break;
 470         case SND_SOC_DAIFMT_LEFT_J:
 471                 snd_soc_update_bits(codec, CS4265_DAC_CTL,
 472                         CS4265_DAC_CTL_DIF, 0);
 473                 snd_soc_update_bits(codec, CS4265_ADC_CTL,
 474                         CS4265_ADC_DIF, 0);
 475                 snd_soc_update_bits(codec, CS4265_SPDIF_CTL2,
 476                         CS4265_SPDIF_CTL2_DIF, (1 << 6));
 477
 478                 break;
 479         default:
 480                 return -EINVAL;
 481         }
 482         return 0;
 483 }
 484
 485 static int cs4265_set_bias_level(struct snd_soc_codec *codec,
 486                                         enum snd_soc_bias_level level)
 487 {
 488         switch (level) {
 489         case SND_SOC_BIAS_ON:
 490                 break;
 491         case SND_SOC_BIAS_PREPARE:
 492                 snd_soc_update_bits(codec, CS4265_PWRCTL,
 493                         CS4265_PWRCTL_PDN, 0);
 494                 break;
 495         case SND_SOC_BIAS_STANDBY:
 496                 snd_soc_update_bits(codec, CS4265_PWRCTL,
 497                         CS4265_PWRCTL_PDN,
 498                         CS4265_PWRCTL_PDN);
 499                 break;
 500         case SND_SOC_BIAS_OFF:
 501                 snd_soc_update_bits(codec, CS4265_PWRCTL,
 502                         CS4265_PWRCTL_PDN,
 503                         CS4265_PWRCTL_PDN);
 504                 break;
 505         }
 506         return 0;
 507 }
 508
 509 #define CS4265_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
 510                         SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_64000 | \
 511                         SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 | \
 512                         SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000)
 513
 514 #define CS4265_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE | \
 515                         SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_U24_LE)
 516
 517 static const struct snd_soc_dai_ops cs4265_ops = {
 518         .hw_params      = cs4265_pcm_hw_params,
 519         .digital_mute   = cs4265_digital_mute,
 520         .set_fmt        = cs4265_set_fmt,
 521         .set_sysclk     = cs4265_set_sysclk,
 522 };
 523
 524 static struct snd_soc_dai_driver cs4265_dai[] = {
 525         {
 526                 .name = "cs4265-dai1",
 527                 .playback = {
 528                         .stream_name = "DAI1 Playback",
 529                         .channels_min = 1,
 530                         .channels_max = 2,
 531                         .rates = CS4265_RATES,
 532                         .formats = CS4265_FORMATS,
 533                 },
 534                 .capture = {
 535                         .stream_name = "DAI1 Capture",
 536                         .channels_min = 1,
 537                         .channels_max = 2,
 538                         .rates = CS4265_RATES,
 539                         .formats = CS4265_FORMATS,
 540                 },
 541                 .ops = &cs4265_ops,
 542         },
 543         {
 544                 .name = "cs4265-dai2",
 545                 .playback = {
 546                         .stream_name = "DAI2 Playback",
 547                         .channels_min = 1,
 548                         .channels_max = 2,
 549                         .rates = CS4265_RATES,
 550                         .formats = CS4265_FORMATS,
 551                 },
 552                 .capture = {
 553                         .stream_name = "DAI2 Capture",
 554                         .channels_min = 1,
 555                         .channels_max = 2,
 556                         .rates = CS4265_RATES,
 557                         .formats = CS4265_FORMATS,
 558                 },
 559                 .ops = &cs4265_ops,
 560         },
 561 };
 562
 563 static const struct snd_soc_codec_driver soc_codec_cs4265 = {
 564         .set_bias_level = cs4265_set_bias_level,
 565
 566         .dapm_widgets = cs4265_dapm_widgets,
 567         .num_dapm_widgets = ARRAY_SIZE(cs4265_dapm_widgets),
 568         .dapm_routes = cs4265_audio_map,
 569         .num_dapm_routes = ARRAY_SIZE(cs4265_audio_map),
 570
 571         .controls = cs4265_snd_controls,
 572         .num_controls = ARRAY_SIZE(cs4265_snd_controls),
 573 };
 574
 575 static const struct regmap_config cs4265_regmap = {
 576         .reg_bits = 8,
 577         .val_bits = 8,
 578
 579         .max_register = CS4265_MAX_REGISTER,
 580         .reg_defaults = cs4265_reg_defaults,
 581         .num_reg_defaults = ARRAY_SIZE(cs4265_reg_defaults),
 582         .readable_reg = cs4265_readable_register,
 583         .volatile_reg = cs4265_volatile_register,
 584         .cache_type = REGCACHE_RBTREE,
 585 };
 586
 587 static int cs4265_i2c_probe(struct i2c_client *i2c_client,
 588                              const struct i2c_device_id *id)
 589 {
 590         struct cs4265_private *cs4265;
 591         int ret = 0;
 592         unsigned int devid = 0;
 593         unsigned int reg;
 594
 595         cs4265 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs4265_private),
 596                                GFP_KERNEL);
 597         if (cs4265 == NULL)
 598                 return -ENOMEM;
 599
 600         cs4265->regmap = devm_regmap_init_i2c(i2c_client, &cs4265_regmap);
 601         if (IS_ERR(cs4265->regmap)) {
 602                 ret = PTR_ERR(cs4265->regmap);
 603                 dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret);
 604                 return ret;
 605         }
 606
 607         cs4265->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev,
 608                 "reset", GPIOD_OUT_LOW);
 609         if (IS_ERR(cs4265->reset_gpio))
 610                 return PTR_ERR(cs4265->reset_gpio);
 611
 612         if (cs4265->reset_gpio) {
 613                 mdelay(1);
 614                 gpiod_set_value_cansleep(cs4265->reset_gpio, 1);
 615         }
 616
 617         i2c_set_clientdata(i2c_client, cs4265);
 618
 619         ret = regmap_read(cs4265->regmap, CS4265_CHIP_ID, &reg);
 620         devid = reg & CS4265_CHIP_ID_MASK;
 621         if (devid != CS4265_CHIP_ID_VAL) {
 622                 ret = -ENODEV;
 623                 dev_err(&i2c_client->dev,
 624                         "CS4265 Device ID (%X). Expected %X\n",
 625                         devid, CS4265_CHIP_ID);
 626                 return ret;
 627         }
 628         dev_info(&i2c_client->dev,
 629                 "CS4265 Version %x\n",
 630                         reg & CS4265_REV_ID_MASK);
 631
 632         regmap_write(cs4265->regmap, CS4265_PWRCTL, 0x0F);
 633
 634         ret =  snd_soc_register_codec(&i2c_client->dev,
 635                         &soc_codec_cs4265, cs4265_dai,
 636                         ARRAY_SIZE(cs4265_dai));
 637         return ret;
 638 }
 639
 640 static int cs4265_i2c_remove(struct i2c_client *client)
 641 {
 642         snd_soc_unregister_codec(&client->dev);
 643         return 0;
 644 }
 645
 646 static const struct of_device_id cs4265_of_match[] = {
 647         { .compatible = "cirrus,cs4265", },
 648         { }
 649 };
 650 MODULE_DEVICE_TABLE(of, cs4265_of_match);
 651
 652 static const struct i2c_device_id cs4265_id[] = {
 653         { "cs4265", 0 },
 654         { }
 655 };
 656 MODULE_DEVICE_TABLE(i2c, cs4265_id);
 657
 658 static struct i2c_driver cs4265_i2c_driver = {
 659         .driver = {
 660                 .name = "cs4265",
 661                 .owner = THIS_MODULE,
 662                 .of_match_table = cs4265_of_match,
 663         },
 664         .id_table = cs4265_id,
 665         .probe =    cs4265_i2c_probe,
 666         .remove =   cs4265_i2c_remove,
 667 };
 668
 669 module_i2c_driver(cs4265_i2c_driver);
 670
 671 MODULE_DESCRIPTION("ASoC CS4265 driver");
 672 MODULE_AUTHOR("Paul Handrigan, Cirrus Logic Inc, <paul.handrigan@cirrus.com>");
 673 MODULE_LICENSE("GPL");