sound/soc/codecs/tlv320aic23.c

   1 /*
   2  * ALSA SoC TLV320AIC23 codec driver
   3  *
   4  * Author:      Arun KS, <arunks@mistralsolutions.com>
   5  * Copyright:   (C) 2008 Mistral Solutions Pvt Ltd.,
   6  *
   7  * Based on sound/soc/codecs/wm8731.c by Richard Purdie
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  *
  13  * Notes:
  14  *  The AIC23 is a driver for a low power stereo audio
  15  *  codec tlv320aic23
  16  *
  17  *  The machine layer should disable unsupported inputs/outputs by
  18  *  snd_soc_dapm_disable_pin(codec, "LHPOUT"), etc.
  19  */
  20
  21 #include <linux/module.h>
  22 #include <linux/moduleparam.h>
  23 #include <linux/init.h>
  24 #include <linux/delay.h>
  25 #include <linux/pm.h>
  26 #include <linux/i2c.h>
  27 #include <linux/regmap.h>
  28 #include <linux/slab.h>
  29 #include <sound/core.h>
  30 #include <sound/pcm.h>
  31 #include <sound/pcm_params.h>
  32 #include <sound/soc.h>
  33 #include <sound/tlv.h>
  34 #include <sound/initval.h>
  35
  36 #include "tlv320aic23.h"
  37
  38 /*
  39  * AIC23 register cache
  40  */
  41 static const struct reg_default tlv320aic23_reg[] = {
  42         {  0, 0x0097 },
  43         {  1, 0x0097 },
  44         {  2, 0x00F9 },
  45         {  3, 0x00F9 },
  46         {  4, 0x001A },
  47         {  5, 0x0004 },
  48         {  6, 0x0007 },
  49         {  7, 0x0001 },
  50         {  8, 0x0020 },
  51         {  9, 0x0000 },
  52 };
  53
  54 static const struct regmap_config tlv320aic23_regmap = {
  55         .reg_bits = 7,
  56         .val_bits = 9,
  57
  58         .max_register = TLV320AIC23_RESET,
  59         .reg_defaults = tlv320aic23_reg,
  60         .num_reg_defaults = ARRAY_SIZE(tlv320aic23_reg),
  61         .cache_type = REGCACHE_RBTREE,
  62 };
  63
  64 static const char *rec_src_text[] = { "Line", "Mic" };
  65 static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"};
  66
  67 static const struct soc_enum rec_src_enum =
  68         SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
  69
  70 static const struct snd_kcontrol_new tlv320aic23_rec_src_mux_controls =
  71 SOC_DAPM_ENUM("Input Select", rec_src_enum);
  72
  73 static const struct soc_enum tlv320aic23_rec_src =
  74         SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
  75 static const struct soc_enum tlv320aic23_deemph =
  76         SOC_ENUM_SINGLE(TLV320AIC23_DIGT, 1, 4, deemph_text);
  77
  78 static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -12100, 100, 0);
  79 static const DECLARE_TLV_DB_SCALE(input_gain_tlv, -1725, 75, 0);
  80 static const DECLARE_TLV_DB_SCALE(sidetone_vol_tlv, -1800, 300, 0);
  81
  82 static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol,
  83         struct snd_ctl_elem_value *ucontrol)
  84 {
  85         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
  86         u16 val, reg;
  87
  88         val = (ucontrol->value.integer.value[0] & 0x07);
  89
  90         /* linear conversion to userspace
  91         * 000   =       -6db
  92         * 001   =       -9db
  93         * 010   =       -12db
  94         * 011   =       -18db (Min)
  95         * 100   =       0db (Max)
  96         */
  97         val = (val >= 4) ? 4  : (3 - val);
  98
  99         reg = snd_soc_read(codec, TLV320AIC23_ANLG) & (~0x1C0);
 100         snd_soc_write(codec, TLV320AIC23_ANLG, reg | (val << 6));
 101
 102         return 0;
 103 }
 104
 105 static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol,
 106         struct snd_ctl_elem_value *ucontrol)
 107 {
 108         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 109         u16 val;
 110
 111         val = snd_soc_read(codec, TLV320AIC23_ANLG) & (0x1C0);
 112         val = val >> 6;
 113         val = (val >= 4) ? 4  : (3 -  val);
 114         ucontrol->value.integer.value[0] = val;
 115         return 0;
 116
 117 }
 118
 119 static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = {
 120         SOC_DOUBLE_R_TLV("Digital Playback Volume", TLV320AIC23_LCHNVOL,
 121                          TLV320AIC23_RCHNVOL, 0, 127, 0, out_gain_tlv),
 122         SOC_SINGLE("Digital Playback Switch", TLV320AIC23_DIGT, 3, 1, 1),
 123         SOC_DOUBLE_R("Line Input Switch", TLV320AIC23_LINVOL,
 124                      TLV320AIC23_RINVOL, 7, 1, 0),
 125         SOC_DOUBLE_R_TLV("Line Input Volume", TLV320AIC23_LINVOL,
 126                          TLV320AIC23_RINVOL, 0, 31, 0, input_gain_tlv),
 127         SOC_SINGLE("Mic Input Switch", TLV320AIC23_ANLG, 1, 1, 1),
 128         SOC_SINGLE("Mic Booster Switch", TLV320AIC23_ANLG, 0, 1, 0),
 129         SOC_SINGLE_EXT_TLV("Sidetone Volume", TLV320AIC23_ANLG, 6, 4, 0,
 130                            snd_soc_tlv320aic23_get_volsw,
 131                            snd_soc_tlv320aic23_put_volsw, sidetone_vol_tlv),
 132         SOC_ENUM("Playback De-emphasis", tlv320aic23_deemph),
 133 };
 134
 135 /* PGA Mixer controls for Line and Mic switch */
 136 static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = {
 137         SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0),
 138         SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0),
 139         SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0),
 140 };
 141
 142 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
 143         SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1),
 144         SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1),
 145         SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0,
 146                          &tlv320aic23_rec_src_mux_controls),
 147         SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1,
 148                            &tlv320aic23_output_mixer_controls[0],
 149                            ARRAY_SIZE(tlv320aic23_output_mixer_controls)),
 150         SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0),
 151         SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0),
 152
 153         SND_SOC_DAPM_OUTPUT("LHPOUT"),
 154         SND_SOC_DAPM_OUTPUT("RHPOUT"),
 155         SND_SOC_DAPM_OUTPUT("LOUT"),
 156         SND_SOC_DAPM_OUTPUT("ROUT"),
 157
 158         SND_SOC_DAPM_INPUT("LLINEIN"),
 159         SND_SOC_DAPM_INPUT("RLINEIN"),
 160
 161         SND_SOC_DAPM_INPUT("MICIN"),
 162 };
 163
 164 static const struct snd_soc_dapm_route tlv320aic23_intercon[] = {
 165         /* Output Mixer */
 166         {"Output Mixer", "Line Bypass Switch", "Line Input"},
 167         {"Output Mixer", "Playback Switch", "DAC"},
 168         {"Output Mixer", "Mic Sidetone Switch", "Mic Input"},
 169
 170         /* Outputs */
 171         {"RHPOUT", NULL, "Output Mixer"},
 172         {"LHPOUT", NULL, "Output Mixer"},
 173         {"LOUT", NULL, "Output Mixer"},
 174         {"ROUT", NULL, "Output Mixer"},
 175
 176         /* Inputs */
 177         {"Line Input", "NULL", "LLINEIN"},
 178         {"Line Input", "NULL", "RLINEIN"},
 179
 180         {"Mic Input", "NULL", "MICIN"},
 181
 182         /* input mux */
 183         {"Capture Source", "Line", "Line Input"},
 184         {"Capture Source", "Mic", "Mic Input"},
 185         {"ADC", NULL, "Capture Source"},
 186
 187 };
 188
 189 /* AIC23 driver data */
 190 struct aic23 {
 191         struct regmap *regmap;
 192         int mclk;
 193         int requested_adc;
 194         int requested_dac;
 195 };
 196
 197 /*
 198  * Common Crystals used
 199  * 11.2896 Mhz /128 = *88.2k  /192 = 58.8k
 200  * 12.0000 Mhz /125 = *96k    /136 = 88.235K
 201  * 12.2880 Mhz /128 = *96k    /192 = 64k
 202  * 16.9344 Mhz /128 = 132.3k /192 = *88.2k
 203  * 18.4320 Mhz /128 = 144k   /192 = *96k
 204  */
 205
 206 /*
 207  * Normal BOSR 0-256/2 = 128, 1-384/2 = 192
 208  * USB BOSR 0-250/2 = 125, 1-272/2 = 136
 209  */
 210 static const int bosr_usb_divisor_table[] = {
 211         128, 125, 192, 136
 212 };
 213 #define LOWER_GROUP ((1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<6) | (1<<7))
 214 #define UPPER_GROUP ((1<<8) | (1<<9) | (1<<10) | (1<<11)        | (1<<15))
 215 static const unsigned short sr_valid_mask[] = {
 216         LOWER_GROUP|UPPER_GROUP,        /* Normal, bosr - 0*/
 217         LOWER_GROUP,                    /* Usb, bosr - 0*/
 218         LOWER_GROUP|UPPER_GROUP,        /* Normal, bosr - 1*/
 219         UPPER_GROUP,                    /* Usb, bosr - 1*/
 220 };
 221 /*
 222  * Every divisor is a factor of 11*12
 223  */
 224 #define SR_MULT (11*12)
 225 #define A(x) (SR_MULT/x)
 226 static const unsigned char sr_adc_mult_table[] = {
 227         A(2), A(2), A(12), A(12),  0, 0, A(3), A(1),
 228         A(2), A(2), A(11), A(11),  0, 0, 0, A(1)
 229 };
 230 static const unsigned char sr_dac_mult_table[] = {
 231         A(2), A(12), A(2), A(12),  0, 0, A(3), A(1),
 232         A(2), A(11), A(2), A(11),  0, 0, 0, A(1)
 233 };
 234
 235 static unsigned get_score(int adc, int adc_l, int adc_h, int need_adc,
 236                 int dac, int dac_l, int dac_h, int need_dac)
 237 {
 238         if ((adc >= adc_l) && (adc <= adc_h) &&
 239                         (dac >= dac_l) && (dac <= dac_h)) {
 240                 int diff_adc = need_adc - adc;
 241                 int diff_dac = need_dac - dac;
 242                 return abs(diff_adc) + abs(diff_dac);
 243         }
 244         return UINT_MAX;
 245 }
 246
 247 static int find_rate(int mclk, u32 need_adc, u32 need_dac)
 248 {
 249         int i, j;
 250         int best_i = -1;
 251         int best_j = -1;
 252         int best_div = 0;
 253         unsigned best_score = UINT_MAX;
 254         int adc_l, adc_h, dac_l, dac_h;
 255
 256         need_adc *= SR_MULT;
 257         need_dac *= SR_MULT;
 258         /*
 259          * rates given are +/- 1/32
 260          */
 261         adc_l = need_adc - (need_adc >> 5);
 262         adc_h = need_adc + (need_adc >> 5);
 263         dac_l = need_dac - (need_dac >> 5);
 264         dac_h = need_dac + (need_dac >> 5);
 265         for (i = 0; i < ARRAY_SIZE(bosr_usb_divisor_table); i++) {
 266                 int base = mclk / bosr_usb_divisor_table[i];
 267                 int mask = sr_valid_mask[i];
 268                 for (j = 0; j < ARRAY_SIZE(sr_adc_mult_table);
 269                                 j++, mask >>= 1) {
 270                         int adc;
 271                         int dac;
 272                         int score;
 273                         if ((mask & 1) == 0)
 274                                 continue;
 275                         adc = base * sr_adc_mult_table[j];
 276                         dac = base * sr_dac_mult_table[j];
 277                         score = get_score(adc, adc_l, adc_h, need_adc,
 278                                         dac, dac_l, dac_h, need_dac);
 279                         if (best_score > score) {
 280                                 best_score = score;
 281                                 best_i = i;
 282                                 best_j = j;
 283                                 best_div = 0;
 284                         }
 285                         score = get_score((adc >> 1), adc_l, adc_h, need_adc,
 286                                         (dac >> 1), dac_l, dac_h, need_dac);
 287                         /* prefer to have a /2 */
 288                         if ((score != UINT_MAX) && (best_score >= score)) {
 289                                 best_score = score;
 290                                 best_i = i;
 291                                 best_j = j;
 292                                 best_div = 1;
 293                         }
 294                 }
 295         }
 296         return (best_j << 2) | best_i | (best_div << TLV320AIC23_CLKIN_SHIFT);
 297 }
 298
 299 #ifdef DEBUG
 300 static void get_current_sample_rates(struct snd_soc_codec *codec, int mclk,
 301                 u32 *sample_rate_adc, u32 *sample_rate_dac)
 302 {
 303         int src = snd_soc_read(codec, TLV320AIC23_SRATE);
 304         int sr = (src >> 2) & 0x0f;
 305         int val = (mclk / bosr_usb_divisor_table[src & 3]);
 306         int adc = (val * sr_adc_mult_table[sr]) / SR_MULT;
 307         int dac = (val * sr_dac_mult_table[sr]) / SR_MULT;
 308         if (src & TLV320AIC23_CLKIN_HALF) {
 309                 adc >>= 1;
 310                 dac >>= 1;
 311         }
 312         *sample_rate_adc = adc;
 313         *sample_rate_dac = dac;
 314 }
 315 #endif
 316
 317 static int set_sample_rate_control(struct snd_soc_codec *codec, int mclk,
 318                 u32 sample_rate_adc, u32 sample_rate_dac)
 319 {
 320         /* Search for the right sample rate */
 321         int data = find_rate(mclk, sample_rate_adc, sample_rate_dac);
 322         if (data < 0) {
 323                 printk(KERN_ERR "%s:Invalid rate %u,%u requested\n",
 324                                 __func__, sample_rate_adc, sample_rate_dac);
 325                 return -EINVAL;
 326         }
 327         snd_soc_write(codec, TLV320AIC23_SRATE, data);
 328 #ifdef DEBUG
 329         {
 330                 u32 adc, dac;
 331                 get_current_sample_rates(codec, mclk, &adc, &dac);
 332                 printk(KERN_DEBUG "actual samplerate = %u,%u reg=%x\n",
 333                         adc, dac, data);
 334         }
 335 #endif
 336         return 0;
 337 }
 338
 339 static int tlv320aic23_hw_params(struct snd_pcm_substream *substream,
 340                                  struct snd_pcm_hw_params *params,
 341                                  struct snd_soc_dai *dai)
 342 {
 343         struct snd_soc_codec *codec = dai->codec;
 344         u16 iface_reg;
 345         int ret;
 346         struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
 347         u32 sample_rate_adc = aic23->requested_adc;
 348         u32 sample_rate_dac = aic23->requested_dac;
 349         u32 sample_rate = params_rate(params);
 350
 351         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 352                 aic23->requested_dac = sample_rate_dac = sample_rate;
 353                 if (!sample_rate_adc)
 354                         sample_rate_adc = sample_rate;
 355         } else {
 356                 aic23->requested_adc = sample_rate_adc = sample_rate;
 357                 if (!sample_rate_dac)
 358                         sample_rate_dac = sample_rate;
 359         }
 360         ret = set_sample_rate_control(codec, aic23->mclk, sample_rate_adc,
 361                         sample_rate_dac);
 362         if (ret < 0)
 363                 return ret;
 364
 365         iface_reg = snd_soc_read(codec, TLV320AIC23_DIGT_FMT) & ~(0x03 << 2);
 366
 367         switch (params_format(params)) {
 368         case SNDRV_PCM_FORMAT_S16_LE:
 369                 break;
 370         case SNDRV_PCM_FORMAT_S20_3LE:
 371                 iface_reg |= (0x01 << 2);
 372                 break;
 373         case SNDRV_PCM_FORMAT_S24_LE:
 374                 iface_reg |= (0x02 << 2);
 375                 break;
 376         case SNDRV_PCM_FORMAT_S32_LE:
 377                 iface_reg |= (0x03 << 2);
 378                 break;
 379         }
 380         snd_soc_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
 381
 382         return 0;
 383 }
 384
 385 static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream,
 386                                    struct snd_soc_dai *dai)
 387 {
 388         struct snd_soc_codec *codec = dai->codec;
 389
 390         /* set active */
 391         snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0001);
 392
 393         return 0;
 394 }
 395
 396 static void tlv320aic23_shutdown(struct snd_pcm_substream *substream,
 397                                  struct snd_soc_dai *dai)
 398 {
 399         struct snd_soc_codec *codec = dai->codec;
 400         struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
 401
 402         /* deactivate */
 403         if (!codec->active) {
 404                 udelay(50);
 405                 snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0);
 406         }
 407         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 408                 aic23->requested_dac = 0;
 409         else
 410                 aic23->requested_adc = 0;
 411 }
 412
 413 static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute)
 414 {
 415         struct snd_soc_codec *codec = dai->codec;
 416         u16 reg;
 417
 418         reg = snd_soc_read(codec, TLV320AIC23_DIGT);
 419         if (mute)
 420                 reg |= TLV320AIC23_DACM_MUTE;
 421
 422         else
 423                 reg &= ~TLV320AIC23_DACM_MUTE;
 424
 425         snd_soc_write(codec, TLV320AIC23_DIGT, reg);
 426
 427         return 0;
 428 }
 429
 430 static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai,
 431                                    unsigned int fmt)
 432 {
 433         struct snd_soc_codec *codec = codec_dai->codec;
 434         u16 iface_reg;
 435
 436         iface_reg = snd_soc_read(codec, TLV320AIC23_DIGT_FMT) & (~0x03);
 437
 438         /* set master/slave audio interface */
 439         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 440         case SND_SOC_DAIFMT_CBM_CFM:
 441                 iface_reg |= TLV320AIC23_MS_MASTER;
 442                 break;
 443         case SND_SOC_DAIFMT_CBS_CFS:
 444                 iface_reg &= ~TLV320AIC23_MS_MASTER;
 445                 break;
 446         default:
 447                 return -EINVAL;
 448
 449         }
 450
 451         /* interface format */
 452         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 453         case SND_SOC_DAIFMT_I2S:
 454                 iface_reg |= TLV320AIC23_FOR_I2S;
 455                 break;
 456         case SND_SOC_DAIFMT_DSP_A:
 457                 iface_reg |= TLV320AIC23_LRP_ON;
 458         case SND_SOC_DAIFMT_DSP_B:
 459                 iface_reg |= TLV320AIC23_FOR_DSP;
 460                 break;
 461         case SND_SOC_DAIFMT_RIGHT_J:
 462                 break;
 463         case SND_SOC_DAIFMT_LEFT_J:
 464                 iface_reg |= TLV320AIC23_FOR_LJUST;
 465                 break;
 466         default:
 467                 return -EINVAL;
 468
 469         }
 470
 471         snd_soc_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
 472
 473         return 0;
 474 }
 475
 476 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 477                                       int clk_id, unsigned int freq, int dir)
 478 {
 479         struct aic23 *aic23 = snd_soc_dai_get_drvdata(codec_dai);
 480         aic23->mclk = freq;
 481         return 0;
 482 }
 483
 484 static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec,
 485                                       enum snd_soc_bias_level level)
 486 {
 487         u16 reg = snd_soc_read(codec, TLV320AIC23_PWR) & 0x17f;
 488
 489         switch (level) {
 490         case SND_SOC_BIAS_ON:
 491                 /* vref/mid, osc on, dac unmute */
 492                 reg &= ~(TLV320AIC23_DEVICE_PWR_OFF | TLV320AIC23_OSC_OFF | \
 493                         TLV320AIC23_DAC_OFF);
 494                 snd_soc_write(codec, TLV320AIC23_PWR, reg);
 495                 break;
 496         case SND_SOC_BIAS_PREPARE:
 497                 break;
 498         case SND_SOC_BIAS_STANDBY:
 499                 /* everything off except vref/vmid, */
 500                 snd_soc_write(codec, TLV320AIC23_PWR,
 501                               reg | TLV320AIC23_CLK_OFF);
 502                 break;
 503         case SND_SOC_BIAS_OFF:
 504                 /* everything off, dac mute, inactive */
 505                 snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0);
 506                 snd_soc_write(codec, TLV320AIC23_PWR, 0x1ff);
 507                 break;
 508         }
 509         codec->dapm.bias_level = level;
 510         return 0;
 511 }
 512
 513 #define AIC23_RATES     SNDRV_PCM_RATE_8000_96000
 514 #define AIC23_FORMATS   (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 515                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
 516
 517 static const struct snd_soc_dai_ops tlv320aic23_dai_ops = {
 518         .prepare        = tlv320aic23_pcm_prepare,
 519         .hw_params      = tlv320aic23_hw_params,
 520         .shutdown       = tlv320aic23_shutdown,
 521         .digital_mute   = tlv320aic23_mute,
 522         .set_fmt        = tlv320aic23_set_dai_fmt,
 523         .set_sysclk     = tlv320aic23_set_dai_sysclk,
 524 };
 525
 526 static struct snd_soc_dai_driver tlv320aic23_dai = {
 527         .name = "tlv320aic23-hifi",
 528         .playback = {
 529                      .stream_name = "Playback",
 530                      .channels_min = 2,
 531                      .channels_max = 2,
 532                      .rates = AIC23_RATES,
 533                      .formats = AIC23_FORMATS,},
 534         .capture = {
 535                     .stream_name = "Capture",
 536                     .channels_min = 2,
 537                     .channels_max = 2,
 538                     .rates = AIC23_RATES,
 539                     .formats = AIC23_FORMATS,},
 540         .ops = &tlv320aic23_dai_ops,
 541 };
 542
 543 static int tlv320aic23_suspend(struct snd_soc_codec *codec)
 544 {
 545         tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
 546
 547         return 0;
 548 }
 549
 550 static int tlv320aic23_resume(struct snd_soc_codec *codec)
 551 {
 552         struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
 553         regcache_mark_dirty(aic23->regmap);
 554         regcache_sync(aic23->regmap);
 555         tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 556
 557         return 0;
 558 }
 559
 560 static int tlv320aic23_probe(struct snd_soc_codec *codec)
 561 {
 562         int ret;
 563
 564         ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP);
 565         if (ret < 0) {
 566                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 567                 return ret;
 568         }
 569
 570         /* Reset codec */
 571         snd_soc_write(codec, TLV320AIC23_RESET, 0);
 572
 573         /* power on device */
 574         tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 575
 576         snd_soc_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K);
 577
 578         /* Unmute input */
 579         snd_soc_update_bits(codec, TLV320AIC23_LINVOL,
 580                             TLV320AIC23_LIM_MUTED, TLV320AIC23_LRS_ENABLED);
 581
 582         snd_soc_update_bits(codec, TLV320AIC23_RINVOL,
 583                             TLV320AIC23_LIM_MUTED, TLV320AIC23_LRS_ENABLED);
 584
 585         snd_soc_update_bits(codec, TLV320AIC23_ANLG,
 586                             TLV320AIC23_BYPASS_ON | TLV320AIC23_MICM_MUTED,
 587                             0);
 588
 589         /* Default output volume */
 590         snd_soc_write(codec, TLV320AIC23_LCHNVOL,
 591                       TLV320AIC23_DEFAULT_OUT_VOL & TLV320AIC23_OUT_VOL_MASK);
 592         snd_soc_write(codec, TLV320AIC23_RCHNVOL,
 593                       TLV320AIC23_DEFAULT_OUT_VOL & TLV320AIC23_OUT_VOL_MASK);
 594
 595         snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x1);
 596
 597         return 0;
 598 }
 599
 600 static int tlv320aic23_remove(struct snd_soc_codec *codec)
 601 {
 602         tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
 603         return 0;
 604 }
 605
 606 static struct snd_soc_codec_driver soc_codec_dev_tlv320aic23 = {
 607         .probe = tlv320aic23_probe,
 608         .remove = tlv320aic23_remove,
 609         .suspend = tlv320aic23_suspend,
 610         .resume = tlv320aic23_resume,
 611         .set_bias_level = tlv320aic23_set_bias_level,
 612         .controls = tlv320aic23_snd_controls,
 613         .num_controls = ARRAY_SIZE(tlv320aic23_snd_controls),
 614         .dapm_widgets = tlv320aic23_dapm_widgets,
 615         .num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets),
 616         .dapm_routes = tlv320aic23_intercon,
 617         .num_dapm_routes = ARRAY_SIZE(tlv320aic23_intercon),
 618 };
 619
 620 /*
 621  * If the i2c layer weren't so broken, we could pass this kind of data
 622  * around
 623  */
 624 static int tlv320aic23_codec_probe(struct i2c_client *i2c,
 625                                    const struct i2c_device_id *i2c_id)
 626 {
 627         struct aic23 *aic23;
 628         int ret;
 629
 630         if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 631                 return -EINVAL;
 632
 633         aic23 = devm_kzalloc(&i2c->dev, sizeof(struct aic23), GFP_KERNEL);
 634         if (aic23 == NULL)
 635                 return -ENOMEM;
 636
 637         aic23->regmap = devm_regmap_init_i2c(i2c, &tlv320aic23_regmap);
 638         if (IS_ERR(aic23->regmap))
 639                 return PTR_ERR(aic23->regmap);
 640
 641         i2c_set_clientdata(i2c, aic23);
 642
 643         ret =  snd_soc_register_codec(&i2c->dev,
 644                         &soc_codec_dev_tlv320aic23, &tlv320aic23_dai, 1);
 645         return ret;
 646 }
 647 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c)
 648 {
 649         snd_soc_unregister_codec(&i2c->dev);
 650         return 0;
 651 }
 652
 653 static const struct i2c_device_id tlv320aic23_id[] = {
 654         {"tlv320aic23", 0},
 655         {}
 656 };
 657
 658 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id);
 659
 660 static struct i2c_driver tlv320aic23_i2c_driver = {
 661         .driver = {
 662                    .name = "tlv320aic23-codec",
 663                    },
 664         .probe = tlv320aic23_codec_probe,
 665         .remove = __exit_p(tlv320aic23_i2c_remove),
 666         .id_table = tlv320aic23_id,
 667 };
 668
 669 module_i2c_driver(tlv320aic23_i2c_driver);
 670
 671 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver");
 672 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
 673 MODULE_LICENSE("GPL");