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/platform_device.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/soc-dapm.h>
  34 #include <sound/tlv.h>
  35 #include <sound/initval.h>
  36
  37 #include "tlv320aic23.h"
  38
  39 #define AIC23_VERSION "0.1"
  40
  41 /*
  42  * AIC23 register cache
  43  */
  44 static const u16 tlv320aic23_reg[] = {
  45         0x0097, 0x0097, 0x00F9, 0x00F9, /* 0 */
  46         0x001A, 0x0004, 0x0007, 0x0001, /* 4 */
  47         0x0020, 0x0000, 0x0000, 0x0000, /* 8 */
  48         0x0000, 0x0000, 0x0000, 0x0000, /* 12 */
  49 };
  50
  51 /*
  52  * read tlv320aic23 register cache
  53  */
  54 static inline unsigned int tlv320aic23_read_reg_cache(struct snd_soc_codec
  55                                                       *codec, unsigned int reg)
  56 {
  57         u16 *cache = codec->reg_cache;
  58         if (reg >= ARRAY_SIZE(tlv320aic23_reg))
  59                 return -1;
  60         return cache[reg];
  61 }
  62
  63 /*
  64  * write tlv320aic23 register cache
  65  */
  66 static inline void tlv320aic23_write_reg_cache(struct snd_soc_codec *codec,
  67                                                u8 reg, u16 value)
  68 {
  69         u16 *cache = codec->reg_cache;
  70         if (reg >= ARRAY_SIZE(tlv320aic23_reg))
  71                 return;
  72         cache[reg] = value;
  73 }
  74
  75 /*
  76  * write to the tlv320aic23 register space
  77  */
  78 static int tlv320aic23_write(struct snd_soc_codec *codec, unsigned int reg,
  79                              unsigned int value)
  80 {
  81
  82         u8 data[2];
  83
  84         /* TLV320AIC23 has 7 bit address and 9 bits of data
  85          * so we need to switch one data bit into reg and rest
  86          * of data into val
  87          */
  88
  89         if (reg > 9 && reg != 15) {
  90                 printk(KERN_WARNING "%s Invalid register R%u\n", __func__, reg);
  91                 return -1;
  92         }
  93
  94         data[0] = (reg << 1) | (value >> 8 & 0x01);
  95         data[1] = value & 0xff;
  96
  97         tlv320aic23_write_reg_cache(codec, reg, value);
  98
  99         if (codec->hw_write(codec->control_data, data, 2) == 2)
 100                 return 0;
 101
 102         printk(KERN_ERR "%s cannot write %03x to register R%u\n", __func__,
 103                value, reg);
 104
 105         return -EIO;
 106 }
 107
 108 static const char *rec_src_text[] = { "Line", "Mic" };
 109 static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"};
 110
 111 static const struct soc_enum rec_src_enum =
 112         SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
 113
 114 static const struct snd_kcontrol_new tlv320aic23_rec_src_mux_controls =
 115 SOC_DAPM_ENUM("Input Select", rec_src_enum);
 116
 117 static const struct soc_enum tlv320aic23_rec_src =
 118         SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
 119 static const struct soc_enum tlv320aic23_deemph =
 120         SOC_ENUM_SINGLE(TLV320AIC23_DIGT, 1, 4, deemph_text);
 121
 122 static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -12100, 100, 0);
 123 static const DECLARE_TLV_DB_SCALE(input_gain_tlv, -1725, 75, 0);
 124 static const DECLARE_TLV_DB_SCALE(sidetone_vol_tlv, -1800, 300, 0);
 125
 126 static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol,
 127         struct snd_ctl_elem_value *ucontrol)
 128 {
 129         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 130         u16 val, reg;
 131
 132         val = (ucontrol->value.integer.value[0] & 0x07);
 133
 134         /* linear conversion to userspace
 135         * 000   =       -6db
 136         * 001   =       -9db
 137         * 010   =       -12db
 138         * 011   =       -18db (Min)
 139         * 100   =       0db (Max)
 140         */
 141         val = (val >= 4) ? 4  : (3 - val);
 142
 143         reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (~0x1C0);
 144         tlv320aic23_write(codec, TLV320AIC23_ANLG, reg | (val << 6));
 145
 146         return 0;
 147 }
 148
 149 static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol,
 150         struct snd_ctl_elem_value *ucontrol)
 151 {
 152         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 153         u16 val;
 154
 155         val = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (0x1C0);
 156         val = val >> 6;
 157         val = (val >= 4) ? 4  : (3 -  val);
 158         ucontrol->value.integer.value[0] = val;
 159         return 0;
 160
 161 }
 162
 163 #define SOC_TLV320AIC23_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
 164 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 165         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 166                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 167         .tlv.p = (tlv_array), \
 168         .info = snd_soc_info_volsw, .get = snd_soc_tlv320aic23_get_volsw,\
 169         .put = snd_soc_tlv320aic23_put_volsw, \
 170         .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
 171
 172 static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = {
 173         SOC_DOUBLE_R_TLV("Digital Playback Volume", TLV320AIC23_LCHNVOL,
 174                          TLV320AIC23_RCHNVOL, 0, 127, 0, out_gain_tlv),
 175         SOC_SINGLE("Digital Playback Switch", TLV320AIC23_DIGT, 3, 1, 1),
 176         SOC_DOUBLE_R("Line Input Switch", TLV320AIC23_LINVOL,
 177                      TLV320AIC23_RINVOL, 7, 1, 0),
 178         SOC_DOUBLE_R_TLV("Line Input Volume", TLV320AIC23_LINVOL,
 179                          TLV320AIC23_RINVOL, 0, 31, 0, input_gain_tlv),
 180         SOC_SINGLE("Mic Input Switch", TLV320AIC23_ANLG, 1, 1, 1),
 181         SOC_SINGLE("Mic Booster Switch", TLV320AIC23_ANLG, 0, 1, 0),
 182         SOC_TLV320AIC23_SINGLE_TLV("Sidetone Volume", TLV320AIC23_ANLG,
 183                                   6, 4, 0, sidetone_vol_tlv),
 184         SOC_ENUM("Playback De-emphasis", tlv320aic23_deemph),
 185 };
 186
 187 /* PGA Mixer controls for Line and Mic switch */
 188 static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = {
 189         SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0),
 190         SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0),
 191         SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0),
 192 };
 193
 194 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
 195         SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1),
 196         SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1),
 197         SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0,
 198                          &tlv320aic23_rec_src_mux_controls),
 199         SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1,
 200                            &tlv320aic23_output_mixer_controls[0],
 201                            ARRAY_SIZE(tlv320aic23_output_mixer_controls)),
 202         SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0),
 203         SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0),
 204
 205         SND_SOC_DAPM_OUTPUT("LHPOUT"),
 206         SND_SOC_DAPM_OUTPUT("RHPOUT"),
 207         SND_SOC_DAPM_OUTPUT("LOUT"),
 208         SND_SOC_DAPM_OUTPUT("ROUT"),
 209
 210         SND_SOC_DAPM_INPUT("LLINEIN"),
 211         SND_SOC_DAPM_INPUT("RLINEIN"),
 212
 213         SND_SOC_DAPM_INPUT("MICIN"),
 214 };
 215
 216 static const struct snd_soc_dapm_route intercon[] = {
 217         /* Output Mixer */
 218         {"Output Mixer", "Line Bypass Switch", "Line Input"},
 219         {"Output Mixer", "Playback Switch", "DAC"},
 220         {"Output Mixer", "Mic Sidetone Switch", "Mic Input"},
 221
 222         /* Outputs */
 223         {"RHPOUT", NULL, "Output Mixer"},
 224         {"LHPOUT", NULL, "Output Mixer"},
 225         {"LOUT", NULL, "Output Mixer"},
 226         {"ROUT", NULL, "Output Mixer"},
 227
 228         /* Inputs */
 229         {"Line Input", "NULL", "LLINEIN"},
 230         {"Line Input", "NULL", "RLINEIN"},
 231
 232         {"Mic Input", "NULL", "MICIN"},
 233
 234         /* input mux */
 235         {"Capture Source", "Line", "Line Input"},
 236         {"Capture Source", "Mic", "Mic Input"},
 237         {"ADC", NULL, "Capture Source"},
 238
 239 };
 240
 241 /* AIC23 driver data */
 242 struct aic23 {
 243         struct snd_soc_codec codec;
 244         int mclk;
 245         int requested_adc;
 246         int requested_dac;
 247 };
 248
 249 /*
 250  * Common Crystals used
 251  * 11.2896 Mhz /128 = *88.2k  /192 = 58.8k
 252  * 12.0000 Mhz /125 = *96k    /136 = 88.235K
 253  * 12.2880 Mhz /128 = *96k    /192 = 64k
 254  * 16.9344 Mhz /128 = 132.3k /192 = *88.2k
 255  * 18.4320 Mhz /128 = 144k   /192 = *96k
 256  */
 257
 258 /*
 259  * Normal BOSR 0-256/2 = 128, 1-384/2 = 192
 260  * USB BOSR 0-250/2 = 125, 1-272/2 = 136
 261  */
 262 static const int bosr_usb_divisor_table[] = {
 263         128, 125, 192, 136
 264 };
 265 #define LOWER_GROUP ((1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<6) | (1<<7))
 266 #define UPPER_GROUP ((1<<8) | (1<<9) | (1<<10) | (1<<11)        | (1<<15))
 267 static const unsigned short sr_valid_mask[] = {
 268         LOWER_GROUP|UPPER_GROUP,        /* Normal, bosr - 0*/
 269         LOWER_GROUP,                    /* Usb, bosr - 0*/
 270         LOWER_GROUP|UPPER_GROUP,        /* Normal, bosr - 1*/
 271         UPPER_GROUP,                    /* Usb, bosr - 1*/
 272 };
 273 /*
 274  * Every divisor is a factor of 11*12
 275  */
 276 #define SR_MULT (11*12)
 277 #define A(x) (SR_MULT/x)
 278 static const unsigned char sr_adc_mult_table[] = {
 279         A(2), A(2), A(12), A(12),  0, 0, A(3), A(1),
 280         A(2), A(2), A(11), A(11),  0, 0, 0, A(1)
 281 };
 282 static const unsigned char sr_dac_mult_table[] = {
 283         A(2), A(12), A(2), A(12),  0, 0, A(3), A(1),
 284         A(2), A(11), A(2), A(11),  0, 0, 0, A(1)
 285 };
 286
 287 static unsigned get_score(int adc, int adc_l, int adc_h, int need_adc,
 288                 int dac, int dac_l, int dac_h, int need_dac)
 289 {
 290         if ((adc >= adc_l) && (adc <= adc_h) &&
 291                         (dac >= dac_l) && (dac <= dac_h)) {
 292                 int diff_adc = need_adc - adc;
 293                 int diff_dac = need_dac - dac;
 294                 return abs(diff_adc) + abs(diff_dac);
 295         }
 296         return UINT_MAX;
 297 }
 298
 299 static int find_rate(int mclk, u32 need_adc, u32 need_dac)
 300 {
 301         int i, j;
 302         int best_i = -1;
 303         int best_j = -1;
 304         int best_div = 0;
 305         unsigned best_score = UINT_MAX;
 306         int adc_l, adc_h, dac_l, dac_h;
 307
 308         need_adc *= SR_MULT;
 309         need_dac *= SR_MULT;
 310         /*
 311          * rates given are +/- 1/32
 312          */
 313         adc_l = need_adc - (need_adc >> 5);
 314         adc_h = need_adc + (need_adc >> 5);
 315         dac_l = need_dac - (need_dac >> 5);
 316         dac_h = need_dac + (need_dac >> 5);
 317         for (i = 0; i < ARRAY_SIZE(bosr_usb_divisor_table); i++) {
 318                 int base = mclk / bosr_usb_divisor_table[i];
 319                 int mask = sr_valid_mask[i];
 320                 for (j = 0; j < ARRAY_SIZE(sr_adc_mult_table);
 321                                 j++, mask >>= 1) {
 322                         int adc;
 323                         int dac;
 324                         int score;
 325                         if ((mask & 1) == 0)
 326                                 continue;
 327                         adc = base * sr_adc_mult_table[j];
 328                         dac = base * sr_dac_mult_table[j];
 329                         score = get_score(adc, adc_l, adc_h, need_adc,
 330                                         dac, dac_l, dac_h, need_dac);
 331                         if (best_score > score) {
 332                                 best_score = score;
 333                                 best_i = i;
 334                                 best_j = j;
 335                                 best_div = 0;
 336                         }
 337                         score = get_score((adc >> 1), adc_l, adc_h, need_adc,
 338                                         (dac >> 1), dac_l, dac_h, need_dac);
 339                         /* prefer to have a /2 */
 340                         if ((score != UINT_MAX) && (best_score >= score)) {
 341                                 best_score = score;
 342                                 best_i = i;
 343                                 best_j = j;
 344                                 best_div = 1;
 345                         }
 346                 }
 347         }
 348         return (best_j << 2) | best_i | (best_div << TLV320AIC23_CLKIN_SHIFT);
 349 }
 350
 351 #ifdef DEBUG
 352 static void get_current_sample_rates(struct snd_soc_codec *codec, int mclk,
 353                 u32 *sample_rate_adc, u32 *sample_rate_dac)
 354 {
 355         int src = tlv320aic23_read_reg_cache(codec, TLV320AIC23_SRATE);
 356         int sr = (src >> 2) & 0x0f;
 357         int val = (mclk / bosr_usb_divisor_table[src & 3]);
 358         int adc = (val * sr_adc_mult_table[sr]) / SR_MULT;
 359         int dac = (val * sr_dac_mult_table[sr]) / SR_MULT;
 360         if (src & TLV320AIC23_CLKIN_HALF) {
 361                 adc >>= 1;
 362                 dac >>= 1;
 363         }
 364         *sample_rate_adc = adc;
 365         *sample_rate_dac = dac;
 366 }
 367 #endif
 368
 369 static int set_sample_rate_control(struct snd_soc_codec *codec, int mclk,
 370                 u32 sample_rate_adc, u32 sample_rate_dac)
 371 {
 372         /* Search for the right sample rate */
 373         int data = find_rate(mclk, sample_rate_adc, sample_rate_dac);
 374         if (data < 0) {
 375                 printk(KERN_ERR "%s:Invalid rate %u,%u requested\n",
 376                                 __func__, sample_rate_adc, sample_rate_dac);
 377                 return -EINVAL;
 378         }
 379         tlv320aic23_write(codec, TLV320AIC23_SRATE, data);
 380 #ifdef DEBUG
 381         {
 382                 u32 adc, dac;
 383                 get_current_sample_rates(codec, mclk, &adc, &dac);
 384                 printk(KERN_DEBUG "actual samplerate = %u,%u reg=%x\n",
 385                         adc, dac, data);
 386         }
 387 #endif
 388         return 0;
 389 }
 390
 391 static int tlv320aic23_add_widgets(struct snd_soc_codec *codec)
 392 {
 393         snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets,
 394                                   ARRAY_SIZE(tlv320aic23_dapm_widgets));
 395
 396         /* set up audio path interconnects */
 397         snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
 398
 399         return 0;
 400 }
 401
 402 static int tlv320aic23_hw_params(struct snd_pcm_substream *substream,
 403                                  struct snd_pcm_hw_params *params,
 404                                  struct snd_soc_dai *dai)
 405 {
 406         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 407         struct snd_soc_device *socdev = rtd->socdev;
 408         struct snd_soc_codec *codec = socdev->card->codec;
 409         u16 iface_reg;
 410         int ret;
 411         struct aic23 *aic23 = container_of(codec, struct aic23, codec);
 412         u32 sample_rate_adc = aic23->requested_adc;
 413         u32 sample_rate_dac = aic23->requested_dac;
 414         u32 sample_rate = params_rate(params);
 415
 416         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 417                 aic23->requested_dac = sample_rate_dac = sample_rate;
 418                 if (!sample_rate_adc)
 419                         sample_rate_adc = sample_rate;
 420         } else {
 421                 aic23->requested_adc = sample_rate_adc = sample_rate;
 422                 if (!sample_rate_dac)
 423                         sample_rate_dac = sample_rate;
 424         }
 425         ret = set_sample_rate_control(codec, aic23->mclk, sample_rate_adc,
 426                         sample_rate_dac);
 427         if (ret < 0)
 428                 return ret;
 429
 430         iface_reg =
 431             tlv320aic23_read_reg_cache(codec,
 432                                        TLV320AIC23_DIGT_FMT) & ~(0x03 << 2);
 433         switch (params_format(params)) {
 434         case SNDRV_PCM_FORMAT_S16_LE:
 435                 break;
 436         case SNDRV_PCM_FORMAT_S20_3LE:
 437                 iface_reg |= (0x01 << 2);
 438                 break;
 439         case SNDRV_PCM_FORMAT_S24_LE:
 440                 iface_reg |= (0x02 << 2);
 441                 break;
 442         case SNDRV_PCM_FORMAT_S32_LE:
 443                 iface_reg |= (0x03 << 2);
 444                 break;
 445         }
 446         tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
 447
 448         return 0;
 449 }
 450
 451 static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream,
 452                                    struct snd_soc_dai *dai)
 453 {
 454         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 455         struct snd_soc_device *socdev = rtd->socdev;
 456         struct snd_soc_codec *codec = socdev->card->codec;
 457
 458         /* set active */
 459         tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001);
 460
 461         return 0;
 462 }
 463
 464 static void tlv320aic23_shutdown(struct snd_pcm_substream *substream,
 465                                  struct snd_soc_dai *dai)
 466 {
 467         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 468         struct snd_soc_device *socdev = rtd->socdev;
 469         struct snd_soc_codec *codec = socdev->card->codec;
 470         struct aic23 *aic23 = container_of(codec, struct aic23, codec);
 471
 472         /* deactivate */
 473         if (!codec->active) {
 474                 udelay(50);
 475                 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
 476         }
 477         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 478                 aic23->requested_dac = 0;
 479         else
 480                 aic23->requested_adc = 0;
 481 }
 482
 483 static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute)
 484 {
 485         struct snd_soc_codec *codec = dai->codec;
 486         u16 reg;
 487
 488         reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT);
 489         if (mute)
 490                 reg |= TLV320AIC23_DACM_MUTE;
 491
 492         else
 493                 reg &= ~TLV320AIC23_DACM_MUTE;
 494
 495         tlv320aic23_write(codec, TLV320AIC23_DIGT, reg);
 496
 497         return 0;
 498 }
 499
 500 static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai,
 501                                    unsigned int fmt)
 502 {
 503         struct snd_soc_codec *codec = codec_dai->codec;
 504         u16 iface_reg;
 505
 506         iface_reg =
 507             tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT_FMT) & (~0x03);
 508
 509         /* set master/slave audio interface */
 510         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 511         case SND_SOC_DAIFMT_CBM_CFM:
 512                 iface_reg |= TLV320AIC23_MS_MASTER;
 513                 break;
 514         case SND_SOC_DAIFMT_CBS_CFS:
 515                 break;
 516         default:
 517                 return -EINVAL;
 518
 519         }
 520
 521         /* interface format */
 522         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 523         case SND_SOC_DAIFMT_I2S:
 524                 iface_reg |= TLV320AIC23_FOR_I2S;
 525                 break;
 526         case SND_SOC_DAIFMT_DSP_A:
 527                 iface_reg |= TLV320AIC23_LRP_ON;
 528         case SND_SOC_DAIFMT_DSP_B:
 529                 iface_reg |= TLV320AIC23_FOR_DSP;
 530                 break;
 531         case SND_SOC_DAIFMT_RIGHT_J:
 532                 break;
 533         case SND_SOC_DAIFMT_LEFT_J:
 534                 iface_reg |= TLV320AIC23_FOR_LJUST;
 535                 break;
 536         default:
 537                 return -EINVAL;
 538
 539         }
 540
 541         tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
 542
 543         return 0;
 544 }
 545
 546 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 547                                       int clk_id, unsigned int freq, int dir)
 548 {
 549         struct snd_soc_codec *codec = codec_dai->codec;
 550         struct aic23 *aic23 = container_of(codec, struct aic23, codec);
 551         aic23->mclk = freq;
 552         return 0;
 553 }
 554
 555 static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec,
 556                                       enum snd_soc_bias_level level)
 557 {
 558         u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f;
 559
 560         switch (level) {
 561         case SND_SOC_BIAS_ON:
 562                 /* vref/mid, osc on, dac unmute */
 563                 tlv320aic23_write(codec, TLV320AIC23_PWR, reg);
 564                 break;
 565         case SND_SOC_BIAS_PREPARE:
 566                 break;
 567         case SND_SOC_BIAS_STANDBY:
 568                 /* everything off except vref/vmid, */
 569                 tlv320aic23_write(codec, TLV320AIC23_PWR, reg | 0x0040);
 570                 break;
 571         case SND_SOC_BIAS_OFF:
 572                 /* everything off, dac mute, inactive */
 573                 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
 574                 tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff);
 575                 break;
 576         }
 577         codec->bias_level = level;
 578         return 0;
 579 }
 580
 581 #define AIC23_RATES     SNDRV_PCM_RATE_8000_96000
 582 #define AIC23_FORMATS   (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 583                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
 584
 585 static struct snd_soc_dai_ops tlv320aic23_dai_ops = {
 586         .prepare        = tlv320aic23_pcm_prepare,
 587         .hw_params      = tlv320aic23_hw_params,
 588         .shutdown       = tlv320aic23_shutdown,
 589         .digital_mute   = tlv320aic23_mute,
 590         .set_fmt        = tlv320aic23_set_dai_fmt,
 591         .set_sysclk     = tlv320aic23_set_dai_sysclk,
 592 };
 593
 594 struct snd_soc_dai tlv320aic23_dai = {
 595         .name = "tlv320aic23",
 596         .playback = {
 597                      .stream_name = "Playback",
 598                      .channels_min = 2,
 599                      .channels_max = 2,
 600                      .rates = AIC23_RATES,
 601                      .formats = AIC23_FORMATS,},
 602         .capture = {
 603                     .stream_name = "Capture",
 604                     .channels_min = 2,
 605                     .channels_max = 2,
 606                     .rates = AIC23_RATES,
 607                     .formats = AIC23_FORMATS,},
 608         .ops = &tlv320aic23_dai_ops,
 609 };
 610 EXPORT_SYMBOL_GPL(tlv320aic23_dai);
 611
 612 static int tlv320aic23_suspend(struct platform_device *pdev,
 613                                pm_message_t state)
 614 {
 615         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 616         struct snd_soc_codec *codec = socdev->card->codec;
 617
 618         tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
 619         tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
 620
 621         return 0;
 622 }
 623
 624 static int tlv320aic23_resume(struct platform_device *pdev)
 625 {
 626         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 627         struct snd_soc_codec *codec = socdev->card->codec;
 628         u16 reg;
 629
 630         /* Sync reg_cache with the hardware */
 631         for (reg = 0; reg <= TLV320AIC23_ACTIVE; reg++) {
 632                 u16 val = tlv320aic23_read_reg_cache(codec, reg);
 633                 tlv320aic23_write(codec, reg, val);
 634         }
 635
 636         tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 637         tlv320aic23_set_bias_level(codec, codec->suspend_bias_level);
 638
 639         return 0;
 640 }
 641
 642 /*
 643  * initialise the AIC23 driver
 644  * register the mixer and dsp interfaces with the kernel
 645  */
 646 static int tlv320aic23_init(struct snd_soc_device *socdev)
 647 {
 648         struct snd_soc_codec *codec = socdev->card->codec;
 649         int ret = 0;
 650         u16 reg;
 651
 652         codec->name = "tlv320aic23";
 653         codec->owner = THIS_MODULE;
 654         codec->read = tlv320aic23_read_reg_cache;
 655         codec->write = tlv320aic23_write;
 656         codec->set_bias_level = tlv320aic23_set_bias_level;
 657         codec->dai = &tlv320aic23_dai;
 658         codec->num_dai = 1;
 659         codec->reg_cache_size = ARRAY_SIZE(tlv320aic23_reg);
 660         codec->reg_cache =
 661             kmemdup(tlv320aic23_reg, sizeof(tlv320aic23_reg), GFP_KERNEL);
 662         if (codec->reg_cache == NULL)
 663                 return -ENOMEM;
 664
 665         /* Reset codec */
 666         tlv320aic23_write(codec, TLV320AIC23_RESET, 0);
 667
 668         /* register pcms */
 669         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 670         if (ret < 0) {
 671                 printk(KERN_ERR "tlv320aic23: failed to create pcms\n");
 672                 goto pcm_err;
 673         }
 674
 675         /* power on device */
 676         tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 677
 678         tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K);
 679
 680         /* Unmute input */
 681         reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL);
 682         tlv320aic23_write(codec, TLV320AIC23_LINVOL,
 683                           (reg & (~TLV320AIC23_LIM_MUTED)) |
 684                           (TLV320AIC23_LRS_ENABLED));
 685
 686         reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL);
 687         tlv320aic23_write(codec, TLV320AIC23_RINVOL,
 688                           (reg & (~TLV320AIC23_LIM_MUTED)) |
 689                           TLV320AIC23_LRS_ENABLED);
 690
 691         reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG);
 692         tlv320aic23_write(codec, TLV320AIC23_ANLG,
 693                          (reg) & (~TLV320AIC23_BYPASS_ON) &
 694                          (~TLV320AIC23_MICM_MUTED));
 695
 696         /* Default output volume */
 697         tlv320aic23_write(codec, TLV320AIC23_LCHNVOL,
 698                           TLV320AIC23_DEFAULT_OUT_VOL &
 699                           TLV320AIC23_OUT_VOL_MASK);
 700         tlv320aic23_write(codec, TLV320AIC23_RCHNVOL,
 701                           TLV320AIC23_DEFAULT_OUT_VOL &
 702                           TLV320AIC23_OUT_VOL_MASK);
 703
 704         tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1);
 705
 706         snd_soc_add_controls(codec, tlv320aic23_snd_controls,
 707                                 ARRAY_SIZE(tlv320aic23_snd_controls));
 708         tlv320aic23_add_widgets(codec);
 709
 710         return ret;
 711
 712 pcm_err:
 713         kfree(codec->reg_cache);
 714         return ret;
 715 }
 716 static struct snd_soc_device *tlv320aic23_socdev;
 717
 718 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 719 /*
 720  * If the i2c layer weren't so broken, we could pass this kind of data
 721  * around
 722  */
 723 static int tlv320aic23_codec_probe(struct i2c_client *i2c,
 724                                    const struct i2c_device_id *i2c_id)
 725 {
 726         struct snd_soc_device *socdev = tlv320aic23_socdev;
 727         struct snd_soc_codec *codec = socdev->card->codec;
 728         int ret;
 729
 730         if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 731                 return -EINVAL;
 732
 733         i2c_set_clientdata(i2c, codec);
 734         codec->control_data = i2c;
 735
 736         ret = tlv320aic23_init(socdev);
 737         if (ret < 0) {
 738                 printk(KERN_ERR "tlv320aic23: failed to initialise AIC23\n");
 739                 goto err;
 740         }
 741         return ret;
 742
 743 err:
 744         kfree(codec);
 745         kfree(i2c);
 746         return ret;
 747 }
 748 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c)
 749 {
 750         put_device(&i2c->dev);
 751         return 0;
 752 }
 753
 754 static const struct i2c_device_id tlv320aic23_id[] = {
 755         {"tlv320aic23", 0},
 756         {}
 757 };
 758
 759 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id);
 760
 761 static struct i2c_driver tlv320aic23_i2c_driver = {
 762         .driver = {
 763                    .name = "tlv320aic23",
 764                    },
 765         .probe = tlv320aic23_codec_probe,
 766         .remove = __exit_p(tlv320aic23_i2c_remove),
 767         .id_table = tlv320aic23_id,
 768 };
 769
 770 #endif
 771
 772 static int tlv320aic23_probe(struct platform_device *pdev)
 773 {
 774         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 775         struct snd_soc_codec *codec;
 776         struct aic23 *aic23;
 777         int ret = 0;
 778
 779         printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION);
 780
 781         aic23 = kzalloc(sizeof(struct aic23), GFP_KERNEL);
 782         if (aic23 == NULL)
 783                 return -ENOMEM;
 784         codec = &aic23->codec;
 785         socdev->card->codec = codec;
 786         mutex_init(&codec->mutex);
 787         INIT_LIST_HEAD(&codec->dapm_widgets);
 788         INIT_LIST_HEAD(&codec->dapm_paths);
 789
 790         tlv320aic23_socdev = socdev;
 791 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 792         codec->hw_write = (hw_write_t) i2c_master_send;
 793         codec->hw_read = NULL;
 794         ret = i2c_add_driver(&tlv320aic23_i2c_driver);
 795         if (ret != 0)
 796                 printk(KERN_ERR "can't add i2c driver");
 797 #endif
 798         return ret;
 799 }
 800
 801 static int tlv320aic23_remove(struct platform_device *pdev)
 802 {
 803         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 804         struct snd_soc_codec *codec = socdev->card->codec;
 805         struct aic23 *aic23 = container_of(codec, struct aic23, codec);
 806
 807         if (codec->control_data)
 808                 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
 809
 810         snd_soc_free_pcms(socdev);
 811         snd_soc_dapm_free(socdev);
 812 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 813         i2c_del_driver(&tlv320aic23_i2c_driver);
 814 #endif
 815         kfree(codec->reg_cache);
 816         kfree(aic23);
 817
 818         return 0;
 819 }
 820 struct snd_soc_codec_device soc_codec_dev_tlv320aic23 = {
 821         .probe = tlv320aic23_probe,
 822         .remove = tlv320aic23_remove,
 823         .suspend = tlv320aic23_suspend,
 824         .resume = tlv320aic23_resume,
 825 };
 826 EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320aic23);
 827
 828 static int __init tlv320aic23_modinit(void)
 829 {
 830         return snd_soc_register_dai(&tlv320aic23_dai);
 831 }
 832 module_init(tlv320aic23_modinit);
 833
 834 static void __exit tlv320aic23_exit(void)
 835 {
 836         snd_soc_unregister_dai(&tlv320aic23_dai);
 837 }
 838 module_exit(tlv320aic23_exit);
 839
 840 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver");
 841 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
 842 MODULE_LICENSE("GPL");