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 <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 <sound/tlv.h>
  34 #include <sound/initval.h>
  35
  36 #include "tlv320aic23.h"
  37
  38 #define AIC23_VERSION "0.1"
  39
  40 /*
  41  * AIC23 register cache
  42  */
  43 static const u16 tlv320aic23_reg[] = {
  44         0x0097, 0x0097, 0x00F9, 0x00F9, /* 0 */
  45         0x001A, 0x0004, 0x0007, 0x0001, /* 4 */
  46         0x0020, 0x0000, 0x0000, 0x0000, /* 8 */
  47         0x0000, 0x0000, 0x0000, 0x0000, /* 12 */
  48 };
  49
  50 /*
  51  * read tlv320aic23 register cache
  52  */
  53 static inline unsigned int tlv320aic23_read_reg_cache(struct snd_soc_codec
  54                                                       *codec, unsigned int reg)
  55 {
  56         u16 *cache = codec->reg_cache;
  57         if (reg >= ARRAY_SIZE(tlv320aic23_reg))
  58                 return -1;
  59         return cache[reg];
  60 }
  61
  62 /*
  63  * write tlv320aic23 register cache
  64  */
  65 static inline void tlv320aic23_write_reg_cache(struct snd_soc_codec *codec,
  66                                                u8 reg, u16 value)
  67 {
  68         u16 *cache = codec->reg_cache;
  69         if (reg >= ARRAY_SIZE(tlv320aic23_reg))
  70                 return;
  71         cache[reg] = value;
  72 }
  73
  74 /*
  75  * write to the tlv320aic23 register space
  76  */
  77 static int tlv320aic23_write(struct snd_soc_codec *codec, unsigned int reg,
  78                              unsigned int value)
  79 {
  80
  81         u8 data[2];
  82
  83         /* TLV320AIC23 has 7 bit address and 9 bits of data
  84          * so we need to switch one data bit into reg and rest
  85          * of data into val
  86          */
  87
  88         if ((reg < 0 || reg > 9) && (reg != 15)) {
  89                 printk(KERN_WARNING "%s Invalid register R%d\n", __func__, reg);
  90                 return -1;
  91         }
  92
  93         data[0] = (reg << 1) | (value >> 8 & 0x01);
  94         data[1] = value & 0xff;
  95
  96         tlv320aic23_write_reg_cache(codec, reg, value);
  97
  98         if (codec->hw_write(codec->control_data, data, 2) == 2)
  99                 return 0;
 100
 101         printk(KERN_ERR "%s cannot write %03x to register R%d\n", __func__,
 102                value, reg);
 103
 104         return -EIO;
 105 }
 106
 107 static const char *rec_src_text[] = { "Line", "Mic" };
 108 static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"};
 109
 110 static const struct soc_enum rec_src_enum =
 111         SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
 112
 113 static const struct snd_kcontrol_new tlv320aic23_rec_src_mux_controls =
 114 SOC_DAPM_ENUM("Input Select", rec_src_enum);
 115
 116 static const struct soc_enum tlv320aic23_rec_src =
 117         SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
 118 static const struct soc_enum tlv320aic23_deemph =
 119         SOC_ENUM_SINGLE(TLV320AIC23_DIGT, 1, 4, deemph_text);
 120
 121 static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -12100, 100, 0);
 122 static const DECLARE_TLV_DB_SCALE(input_gain_tlv, -1725, 75, 0);
 123 static const DECLARE_TLV_DB_SCALE(sidetone_vol_tlv, -1800, 300, 0);
 124
 125 static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol,
 126         struct snd_ctl_elem_value *ucontrol)
 127 {
 128         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 129         u16 val, reg;
 130
 131         val = (ucontrol->value.integer.value[0] & 0x07);
 132
 133         /* linear conversion to userspace
 134         * 000   =       -6db
 135         * 001   =       -9db
 136         * 010   =       -12db
 137         * 011   =       -18db (Min)
 138         * 100   =       0db (Max)
 139         */
 140         val = (val >= 4) ? 4  : (3 - val);
 141
 142         reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (~0x1C0);
 143         tlv320aic23_write(codec, TLV320AIC23_ANLG, reg | (val << 6));
 144
 145         return 0;
 146 }
 147
 148 static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol,
 149         struct snd_ctl_elem_value *ucontrol)
 150 {
 151         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 152         u16 val;
 153
 154         val = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (0x1C0);
 155         val = val >> 6;
 156         val = (val >= 4) ? 4  : (3 -  val);
 157         ucontrol->value.integer.value[0] = val;
 158         return 0;
 159
 160 }
 161
 162 #define SOC_TLV320AIC23_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
 163 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 164         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 165                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 166         .tlv.p = (tlv_array), \
 167         .info = snd_soc_info_volsw, .get = snd_soc_tlv320aic23_get_volsw,\
 168         .put = snd_soc_tlv320aic23_put_volsw, \
 169         .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
 170
 171 static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = {
 172         SOC_DOUBLE_R_TLV("Digital Playback Volume", TLV320AIC23_LCHNVOL,
 173                          TLV320AIC23_RCHNVOL, 0, 127, 0, out_gain_tlv),
 174         SOC_SINGLE("Digital Playback Switch", TLV320AIC23_DIGT, 3, 1, 1),
 175         SOC_DOUBLE_R("Line Input Switch", TLV320AIC23_LINVOL,
 176                      TLV320AIC23_RINVOL, 7, 1, 0),
 177         SOC_DOUBLE_R_TLV("Line Input Volume", TLV320AIC23_LINVOL,
 178                          TLV320AIC23_RINVOL, 0, 31, 0, input_gain_tlv),
 179         SOC_SINGLE("Mic Input Switch", TLV320AIC23_ANLG, 1, 1, 1),
 180         SOC_SINGLE("Mic Booster Switch", TLV320AIC23_ANLG, 0, 1, 0),
 181         SOC_TLV320AIC23_SINGLE_TLV("Sidetone Volume", TLV320AIC23_ANLG,
 182                                   6, 4, 0, sidetone_vol_tlv),
 183         SOC_ENUM("Playback De-emphasis", tlv320aic23_deemph),
 184 };
 185
 186 /* add non dapm controls */
 187 static int tlv320aic23_add_controls(struct snd_soc_codec *codec)
 188 {
 189
 190         int err, i;
 191
 192         for (i = 0; i < ARRAY_SIZE(tlv320aic23_snd_controls); i++) {
 193                 err = snd_ctl_add(codec->card,
 194                                   snd_soc_cnew(&tlv320aic23_snd_controls[i],
 195                                                codec, NULL));
 196                 if (err < 0)
 197                         return err;
 198         }
 199
 200         return 0;
 201
 202 }
 203
 204 /* PGA Mixer controls for Line and Mic switch */
 205 static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = {
 206         SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0),
 207         SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0),
 208         SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0),
 209 };
 210
 211 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
 212         SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1),
 213         SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1),
 214         SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0,
 215                          &tlv320aic23_rec_src_mux_controls),
 216         SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1,
 217                            &tlv320aic23_output_mixer_controls[0],
 218                            ARRAY_SIZE(tlv320aic23_output_mixer_controls)),
 219         SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0),
 220         SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0),
 221
 222         SND_SOC_DAPM_OUTPUT("LHPOUT"),
 223         SND_SOC_DAPM_OUTPUT("RHPOUT"),
 224         SND_SOC_DAPM_OUTPUT("LOUT"),
 225         SND_SOC_DAPM_OUTPUT("ROUT"),
 226
 227         SND_SOC_DAPM_INPUT("LLINEIN"),
 228         SND_SOC_DAPM_INPUT("RLINEIN"),
 229
 230         SND_SOC_DAPM_INPUT("MICIN"),
 231 };
 232
 233 static const struct snd_soc_dapm_route intercon[] = {
 234         /* Output Mixer */
 235         {"Output Mixer", "Line Bypass Switch", "Line Input"},
 236         {"Output Mixer", "Playback Switch", "DAC"},
 237         {"Output Mixer", "Mic Sidetone Switch", "Mic Input"},
 238
 239         /* Outputs */
 240         {"RHPOUT", NULL, "Output Mixer"},
 241         {"LHPOUT", NULL, "Output Mixer"},
 242         {"LOUT", NULL, "Output Mixer"},
 243         {"ROUT", NULL, "Output Mixer"},
 244
 245         /* Inputs */
 246         {"Line Input", "NULL", "LLINEIN"},
 247         {"Line Input", "NULL", "RLINEIN"},
 248
 249         {"Mic Input", "NULL", "MICIN"},
 250
 251         /* input mux */
 252         {"Capture Source", "Line", "Line Input"},
 253         {"Capture Source", "Mic", "Mic Input"},
 254         {"ADC", NULL, "Capture Source"},
 255
 256 };
 257
 258 /* AIC23 driver data */
 259 struct aic23 {
 260         struct snd_soc_codec codec;
 261         int mclk;
 262         int requested_adc;
 263         int requested_dac;
 264 };
 265
 266 /*
 267  * Common Crystals used
 268  * 11.2896 Mhz /128 = *88.2k  /192 = 58.8k
 269  * 12.0000 Mhz /125 = *96k    /136 = 88.235K
 270  * 12.2880 Mhz /128 = *96k    /192 = 64k
 271  * 16.9344 Mhz /128 = 132.3k /192 = *88.2k
 272  * 18.4320 Mhz /128 = 144k   /192 = *96k
 273  */
 274
 275 /*
 276  * Normal BOSR 0-256/2 = 128, 1-384/2 = 192
 277  * USB BOSR 0-250/2 = 125, 1-272/2 = 136
 278  */
 279 static const int bosr_usb_divisor_table[] = {
 280         128, 125, 192, 136
 281 };
 282 #define LOWER_GROUP ((1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<6) | (1<<7))
 283 #define UPPER_GROUP ((1<<8) | (1<<9) | (1<<10) | (1<<11)        | (1<<15))
 284 static const unsigned short sr_valid_mask[] = {
 285         LOWER_GROUP|UPPER_GROUP,        /* Normal, bosr - 0*/
 286         LOWER_GROUP|UPPER_GROUP,        /* Normal, bosr - 1*/
 287         LOWER_GROUP,                    /* Usb, bosr - 0*/
 288         UPPER_GROUP,                    /* Usb, bosr - 1*/
 289 };
 290 /*
 291  * Every divisor is a factor of 11*12
 292  */
 293 #define SR_MULT (11*12)
 294 #define A(x) (x) ? (SR_MULT/x) : 0
 295 static const unsigned char sr_adc_mult_table[] = {
 296         A(2), A(2), A(12), A(12),  A(0), A(0), A(3), A(1),
 297         A(2), A(2), A(11), A(11),  A(0), A(0), A(0), A(1)
 298 };
 299 static const unsigned char sr_dac_mult_table[] = {
 300         A(2), A(12), A(2), A(12),  A(0), A(0), A(3), A(1),
 301         A(2), A(11), A(2), A(11),  A(0), A(0), A(0), A(1)
 302 };
 303
 304 static unsigned get_score(int adc, int adc_l, int adc_h, int need_adc,
 305                 int dac, int dac_l, int dac_h, int need_dac)
 306 {
 307         if ((adc >= adc_l) && (adc <= adc_h) &&
 308                         (dac >= dac_l) && (dac <= dac_h)) {
 309                 int diff_adc = need_adc - adc;
 310                 int diff_dac = need_dac - dac;
 311                 return abs(diff_adc) + abs(diff_dac);
 312         }
 313         return UINT_MAX;
 314 }
 315
 316 static int find_rate(int mclk, u32 need_adc, u32 need_dac)
 317 {
 318         int i, j;
 319         int best_i = -1;
 320         int best_j = -1;
 321         int best_div = 0;
 322         unsigned best_score = UINT_MAX;
 323         int adc_l, adc_h, dac_l, dac_h;
 324
 325         need_adc *= SR_MULT;
 326         need_dac *= SR_MULT;
 327         /*
 328          * rates given are +/- 1/32
 329          */
 330         adc_l = need_adc - (need_adc >> 5);
 331         adc_h = need_adc + (need_adc >> 5);
 332         dac_l = need_dac - (need_dac >> 5);
 333         dac_h = need_dac + (need_dac >> 5);
 334         for (i = 0; i < ARRAY_SIZE(bosr_usb_divisor_table); i++) {
 335                 int base = mclk / bosr_usb_divisor_table[i];
 336                 int mask = sr_valid_mask[i];
 337                 for (j = 0; j < ARRAY_SIZE(sr_adc_mult_table);
 338                                 j++, mask >>= 1) {
 339                         int adc;
 340                         int dac;
 341                         int score;
 342                         if ((mask & 1) == 0)
 343                                 continue;
 344                         adc = base * sr_adc_mult_table[j];
 345                         dac = base * sr_dac_mult_table[j];
 346                         score = get_score(adc, adc_l, adc_h, need_adc,
 347                                         dac, dac_l, dac_h, need_dac);
 348                         if (best_score > score) {
 349                                 best_score = score;
 350                                 best_i = i;
 351                                 best_j = j;
 352                                 best_div = 0;
 353                         }
 354                         score = get_score((adc >> 1), adc_l, adc_h, need_adc,
 355                                         (dac >> 1), dac_l, dac_h, need_dac);
 356                         /* prefer to have a /2 */
 357                         if ((score != UINT_MAX) && (best_score >= score)) {
 358                                 best_score = score;
 359                                 best_i = i;
 360                                 best_j = j;
 361                                 best_div = 1;
 362                         }
 363                 }
 364         }
 365         return (best_j << 2) | best_i | (best_div << TLV320AIC23_CLKIN_SHIFT);
 366 }
 367
 368 #ifdef DEBUG
 369 static void get_current_sample_rates(struct snd_soc_codec *codec, int mclk,
 370                 u32 *sample_rate_adc, u32 *sample_rate_dac)
 371 {
 372         int src = tlv320aic23_read_reg_cache(codec, TLV320AIC23_SRATE);
 373         int sr = (src >> 2) & 0x0f;
 374         int val = (mclk / bosr_usb_divisor_table[src & 3]);
 375         int adc = (val * sr_adc_mult_table[sr]) / SR_MULT;
 376         int dac = (val * sr_dac_mult_table[sr]) / SR_MULT;
 377         if (src & TLV320AIC23_CLKIN_HALF) {
 378                 adc >>= 1;
 379                 dac >>= 1;
 380         }
 381         *sample_rate_adc = adc;
 382         *sample_rate_dac = dac;
 383 }
 384 #endif
 385
 386 static int set_sample_rate_control(struct snd_soc_codec *codec, int mclk,
 387                 u32 sample_rate_adc, u32 sample_rate_dac)
 388 {
 389         /* Search for the right sample rate */
 390         int data = find_rate(mclk, sample_rate_adc, sample_rate_dac);
 391         if (data < 0) {
 392                 printk(KERN_ERR "%s:Invalid rate %u,%u requested\n",
 393                                 __func__, sample_rate_adc, sample_rate_dac);
 394                 return -EINVAL;
 395         }
 396         tlv320aic23_write(codec, TLV320AIC23_SRATE, data);
 397 #ifdef DEBUG
 398         {
 399                 u32 adc, dac;
 400                 get_current_sample_rates(codec, mclk, &adc, &dac);
 401                 printk(KERN_DEBUG "actual samplerate = %u,%u reg=%x\n",
 402                         adc, dac, data);
 403         }
 404 #endif
 405         return 0;
 406 }
 407
 408 static int tlv320aic23_add_widgets(struct snd_soc_codec *codec)
 409 {
 410         snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets,
 411                                   ARRAY_SIZE(tlv320aic23_dapm_widgets));
 412
 413         /* set up audio path interconnects */
 414         snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
 415
 416         snd_soc_dapm_new_widgets(codec);
 417         return 0;
 418 }
 419
 420 static int tlv320aic23_hw_params(struct snd_pcm_substream *substream,
 421                                  struct snd_pcm_hw_params *params,
 422                                  struct snd_soc_dai *dai)
 423 {
 424         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 425         struct snd_soc_device *socdev = rtd->socdev;
 426         struct snd_soc_codec *codec = socdev->codec;
 427         u16 iface_reg;
 428         int ret;
 429         struct aic23 *aic23 = container_of(codec, struct aic23, codec);
 430         u32 sample_rate_adc = aic23->requested_adc;
 431         u32 sample_rate_dac = aic23->requested_dac;
 432         u32 sample_rate = params_rate(params);
 433
 434         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 435                 aic23->requested_dac = sample_rate_dac = sample_rate;
 436                 if (!sample_rate_adc)
 437                         sample_rate_adc = sample_rate;
 438         } else {
 439                 aic23->requested_adc = sample_rate_adc = sample_rate;
 440                 if (!sample_rate_dac)
 441                         sample_rate_dac = sample_rate;
 442         }
 443         ret = set_sample_rate_control(codec, aic23->mclk, sample_rate_adc,
 444                         sample_rate_dac);
 445         if (ret < 0)
 446                 return ret;
 447
 448         iface_reg =
 449             tlv320aic23_read_reg_cache(codec,
 450                                        TLV320AIC23_DIGT_FMT) & ~(0x03 << 2);
 451         switch (params_format(params)) {
 452         case SNDRV_PCM_FORMAT_S16_LE:
 453                 break;
 454         case SNDRV_PCM_FORMAT_S20_3LE:
 455                 iface_reg |= (0x01 << 2);
 456                 break;
 457         case SNDRV_PCM_FORMAT_S24_LE:
 458                 iface_reg |= (0x02 << 2);
 459                 break;
 460         case SNDRV_PCM_FORMAT_S32_LE:
 461                 iface_reg |= (0x03 << 2);
 462                 break;
 463         }
 464         tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
 465
 466         return 0;
 467 }
 468
 469 static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream,
 470                                    struct snd_soc_dai *dai)
 471 {
 472         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 473         struct snd_soc_device *socdev = rtd->socdev;
 474         struct snd_soc_codec *codec = socdev->codec;
 475
 476         /* set active */
 477         tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001);
 478
 479         return 0;
 480 }
 481
 482 static void tlv320aic23_shutdown(struct snd_pcm_substream *substream,
 483                                  struct snd_soc_dai *dai)
 484 {
 485         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 486         struct snd_soc_device *socdev = rtd->socdev;
 487         struct snd_soc_codec *codec = socdev->codec;
 488         struct aic23 *aic23 = container_of(codec, struct aic23, codec);
 489
 490         /* deactivate */
 491         if (!codec->active) {
 492                 udelay(50);
 493                 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
 494         }
 495         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 496                 aic23->requested_dac = 0;
 497         else
 498                 aic23->requested_adc = 0;
 499 }
 500
 501 static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute)
 502 {
 503         struct snd_soc_codec *codec = dai->codec;
 504         u16 reg;
 505
 506         reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT);
 507         if (mute)
 508                 reg |= TLV320AIC23_DACM_MUTE;
 509
 510         else
 511                 reg &= ~TLV320AIC23_DACM_MUTE;
 512
 513         tlv320aic23_write(codec, TLV320AIC23_DIGT, reg);
 514
 515         return 0;
 516 }
 517
 518 static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai,
 519                                    unsigned int fmt)
 520 {
 521         struct snd_soc_codec *codec = codec_dai->codec;
 522         u16 iface_reg;
 523
 524         iface_reg =
 525             tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT_FMT) & (~0x03);
 526
 527         /* set master/slave audio interface */
 528         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 529         case SND_SOC_DAIFMT_CBM_CFM:
 530                 iface_reg |= TLV320AIC23_MS_MASTER;
 531                 break;
 532         case SND_SOC_DAIFMT_CBS_CFS:
 533                 break;
 534         default:
 535                 return -EINVAL;
 536
 537         }
 538
 539         /* interface format */
 540         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 541         case SND_SOC_DAIFMT_I2S:
 542                 iface_reg |= TLV320AIC23_FOR_I2S;
 543                 break;
 544         case SND_SOC_DAIFMT_DSP_A:
 545                 iface_reg |= TLV320AIC23_FOR_DSP;
 546                 break;
 547         case SND_SOC_DAIFMT_RIGHT_J:
 548                 break;
 549         case SND_SOC_DAIFMT_LEFT_J:
 550                 iface_reg |= TLV320AIC23_FOR_LJUST;
 551                 break;
 552         default:
 553                 return -EINVAL;
 554
 555         }
 556
 557         tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
 558
 559         return 0;
 560 }
 561
 562 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 563                                       int clk_id, unsigned int freq, int dir)
 564 {
 565         struct snd_soc_codec *codec = codec_dai->codec;
 566         struct aic23 *aic23 = container_of(codec, struct aic23, codec);
 567         aic23->mclk = freq;
 568         return 0;
 569 }
 570
 571 static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec,
 572                                       enum snd_soc_bias_level level)
 573 {
 574         u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f;
 575
 576         switch (level) {
 577         case SND_SOC_BIAS_ON:
 578                 /* vref/mid, osc on, dac unmute */
 579                 tlv320aic23_write(codec, TLV320AIC23_PWR, reg);
 580                 break;
 581         case SND_SOC_BIAS_PREPARE:
 582                 break;
 583         case SND_SOC_BIAS_STANDBY:
 584                 /* everything off except vref/vmid, */
 585                 tlv320aic23_write(codec, TLV320AIC23_PWR, reg | 0x0040);
 586                 break;
 587         case SND_SOC_BIAS_OFF:
 588                 /* everything off, dac mute, inactive */
 589                 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
 590                 tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff);
 591                 break;
 592         }
 593         codec->bias_level = level;
 594         return 0;
 595 }
 596
 597 #define AIC23_RATES     SNDRV_PCM_RATE_8000_96000
 598 #define AIC23_FORMATS   (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 599                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
 600
 601 struct snd_soc_dai tlv320aic23_dai = {
 602         .name = "tlv320aic23",
 603         .playback = {
 604                      .stream_name = "Playback",
 605                      .channels_min = 2,
 606                      .channels_max = 2,
 607                      .rates = AIC23_RATES,
 608                      .formats = AIC23_FORMATS,},
 609         .capture = {
 610                     .stream_name = "Capture",
 611                     .channels_min = 2,
 612                     .channels_max = 2,
 613                     .rates = AIC23_RATES,
 614                     .formats = AIC23_FORMATS,},
 615         .ops = {
 616                 .prepare = tlv320aic23_pcm_prepare,
 617                 .hw_params = tlv320aic23_hw_params,
 618                 .shutdown = tlv320aic23_shutdown,
 619                 .digital_mute = tlv320aic23_mute,
 620                 .set_fmt = tlv320aic23_set_dai_fmt,
 621                 .set_sysclk = tlv320aic23_set_dai_sysclk,
 622         }
 623 };
 624 EXPORT_SYMBOL_GPL(tlv320aic23_dai);
 625
 626 static int tlv320aic23_suspend(struct platform_device *pdev,
 627                                pm_message_t state)
 628 {
 629         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 630         struct snd_soc_codec *codec = socdev->codec;
 631
 632         tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
 633         tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
 634
 635         return 0;
 636 }
 637
 638 static int tlv320aic23_resume(struct platform_device *pdev)
 639 {
 640         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 641         struct snd_soc_codec *codec = socdev->codec;
 642         int i;
 643         u16 reg;
 644
 645         /* Sync reg_cache with the hardware */
 646         for (reg = 0; reg < ARRAY_SIZE(tlv320aic23_reg); i++) {
 647                 u16 val = tlv320aic23_read_reg_cache(codec, reg);
 648                 tlv320aic23_write(codec, reg, val);
 649         }
 650
 651         tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 652         tlv320aic23_set_bias_level(codec, codec->suspend_bias_level);
 653
 654         return 0;
 655 }
 656
 657 /*
 658  * initialise the AIC23 driver
 659  * register the mixer and dsp interfaces with the kernel
 660  */
 661 static int tlv320aic23_init(struct snd_soc_device *socdev)
 662 {
 663         struct snd_soc_codec *codec = socdev->codec;
 664         int ret = 0;
 665         u16 reg;
 666
 667         codec->name = "tlv320aic23";
 668         codec->owner = THIS_MODULE;
 669         codec->read = tlv320aic23_read_reg_cache;
 670         codec->write = tlv320aic23_write;
 671         codec->set_bias_level = tlv320aic23_set_bias_level;
 672         codec->dai = &tlv320aic23_dai;
 673         codec->num_dai = 1;
 674         codec->reg_cache_size = ARRAY_SIZE(tlv320aic23_reg);
 675         codec->reg_cache =
 676             kmemdup(tlv320aic23_reg, sizeof(tlv320aic23_reg), GFP_KERNEL);
 677         if (codec->reg_cache == NULL)
 678                 return -ENOMEM;
 679
 680         /* Reset codec */
 681         tlv320aic23_write(codec, TLV320AIC23_RESET, 0);
 682
 683         /* register pcms */
 684         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 685         if (ret < 0) {
 686                 printk(KERN_ERR "tlv320aic23: failed to create pcms\n");
 687                 goto pcm_err;
 688         }
 689
 690         /* power on device */
 691         tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 692
 693         tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K);
 694
 695         /* Unmute input */
 696         reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL);
 697         tlv320aic23_write(codec, TLV320AIC23_LINVOL,
 698                           (reg & (~TLV320AIC23_LIM_MUTED)) |
 699                           (TLV320AIC23_LRS_ENABLED));
 700
 701         reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL);
 702         tlv320aic23_write(codec, TLV320AIC23_RINVOL,
 703                           (reg & (~TLV320AIC23_LIM_MUTED)) |
 704                           TLV320AIC23_LRS_ENABLED);
 705
 706         reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG);
 707         tlv320aic23_write(codec, TLV320AIC23_ANLG,
 708                          (reg) & (~TLV320AIC23_BYPASS_ON) &
 709                          (~TLV320AIC23_MICM_MUTED));
 710
 711         /* Default output volume */
 712         tlv320aic23_write(codec, TLV320AIC23_LCHNVOL,
 713                           TLV320AIC23_DEFAULT_OUT_VOL &
 714                           TLV320AIC23_OUT_VOL_MASK);
 715         tlv320aic23_write(codec, TLV320AIC23_RCHNVOL,
 716                           TLV320AIC23_DEFAULT_OUT_VOL &
 717                           TLV320AIC23_OUT_VOL_MASK);
 718
 719         tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1);
 720
 721         tlv320aic23_add_controls(codec);
 722         tlv320aic23_add_widgets(codec);
 723         ret = snd_soc_init_card(socdev);
 724         if (ret < 0) {
 725                 printk(KERN_ERR "tlv320aic23: failed to register card\n");
 726                 goto card_err;
 727         }
 728
 729         return ret;
 730
 731 card_err:
 732         snd_soc_free_pcms(socdev);
 733         snd_soc_dapm_free(socdev);
 734 pcm_err:
 735         kfree(codec->reg_cache);
 736         return ret;
 737 }
 738 static struct snd_soc_device *tlv320aic23_socdev;
 739
 740 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 741 /*
 742  * If the i2c layer weren't so broken, we could pass this kind of data
 743  * around
 744  */
 745 static int tlv320aic23_codec_probe(struct i2c_client *i2c,
 746                                    const struct i2c_device_id *i2c_id)
 747 {
 748         struct snd_soc_device *socdev = tlv320aic23_socdev;
 749         struct snd_soc_codec *codec = socdev->codec;
 750         int ret;
 751
 752         if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 753                 return -EINVAL;
 754
 755         i2c_set_clientdata(i2c, codec);
 756         codec->control_data = i2c;
 757
 758         ret = tlv320aic23_init(socdev);
 759         if (ret < 0) {
 760                 printk(KERN_ERR "tlv320aic23: failed to initialise AIC23\n");
 761                 goto err;
 762         }
 763         return ret;
 764
 765 err:
 766         kfree(codec);
 767         kfree(i2c);
 768         return ret;
 769 }
 770 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c)
 771 {
 772         put_device(&i2c->dev);
 773         return 0;
 774 }
 775
 776 static const struct i2c_device_id tlv320aic23_id[] = {
 777         {"tlv320aic23", 0},
 778         {}
 779 };
 780
 781 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id);
 782
 783 static struct i2c_driver tlv320aic23_i2c_driver = {
 784         .driver = {
 785                    .name = "tlv320aic23",
 786                    },
 787         .probe = tlv320aic23_codec_probe,
 788         .remove = __exit_p(tlv320aic23_i2c_remove),
 789         .id_table = tlv320aic23_id,
 790 };
 791
 792 #endif
 793
 794 static int tlv320aic23_probe(struct platform_device *pdev)
 795 {
 796         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 797         struct snd_soc_codec *codec;
 798         struct aic23 *aic23;
 799         int ret = 0;
 800
 801         printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION);
 802
 803         aic23 = kzalloc(sizeof(struct aic23), GFP_KERNEL);
 804         if (aic23 == NULL)
 805                 return -ENOMEM;
 806         codec = &aic23->codec;
 807         socdev->codec = codec;
 808         mutex_init(&codec->mutex);
 809         INIT_LIST_HEAD(&codec->dapm_widgets);
 810         INIT_LIST_HEAD(&codec->dapm_paths);
 811
 812         tlv320aic23_socdev = socdev;
 813 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 814         codec->hw_write = (hw_write_t) i2c_master_send;
 815         codec->hw_read = NULL;
 816         ret = i2c_add_driver(&tlv320aic23_i2c_driver);
 817         if (ret != 0)
 818                 printk(KERN_ERR "can't add i2c driver");
 819 #endif
 820         return ret;
 821 }
 822
 823 static int tlv320aic23_remove(struct platform_device *pdev)
 824 {
 825         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 826         struct snd_soc_codec *codec = socdev->codec;
 827         struct aic23 *aic23 = container_of(codec, struct aic23, codec);
 828
 829         if (codec->control_data)
 830                 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
 831
 832         snd_soc_free_pcms(socdev);
 833         snd_soc_dapm_free(socdev);
 834 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 835         i2c_del_driver(&tlv320aic23_i2c_driver);
 836 #endif
 837         kfree(codec->reg_cache);
 838         kfree(aic23);
 839
 840         return 0;
 841 }
 842 struct snd_soc_codec_device soc_codec_dev_tlv320aic23 = {
 843         .probe = tlv320aic23_probe,
 844         .remove = tlv320aic23_remove,
 845         .suspend = tlv320aic23_suspend,
 846         .resume = tlv320aic23_resume,
 847 };
 848 EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320aic23);
 849
 850 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver");
 851 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
 852 MODULE_LICENSE("GPL");