release/src-rt-6.x.4708/linux/linux-2.6.36/sound/soc/s3c24xx/neo1973_wm8753.c

   1 /*
   2  * neo1973_wm8753.c  --  SoC audio for Neo1973
   3  *
   4  * Copyright 2007 Wolfson Microelectronics PLC.
   5  * Author: Graeme Gregory
   6  *         graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
   7  *
   8  *  This program is free software; you can redistribute  it and/or modify it
   9  *  under  the terms of  the GNU General  Public License as published by the
  10  *  Free Software Foundation;  either version 2 of the  License, or (at your
  11  *  option) any later version.
  12  *
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/moduleparam.h>
  17 #include <linux/timer.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/platform_device.h>
  20 #include <linux/i2c.h>
  21 #include <sound/core.h>
  22 #include <sound/pcm.h>
  23 #include <sound/soc.h>
  24 #include <sound/soc-dapm.h>
  25 #include <sound/tlv.h>
  26
  27 #include <asm/mach-types.h>
  28 #include <asm/hardware/scoop.h>
  29 #include <mach/regs-clock.h>
  30 #include <mach/regs-gpio.h>
  31 #include <mach/hardware.h>
  32 #include <linux/io.h>
  33 #include <mach/spi-gpio.h>
  34
  35 #include <plat/regs-iis.h>
  36
  37 #include "../codecs/wm8753.h"
  38 #include "lm4857.h"
  39 #include "s3c-dma.h"
  40 #include "s3c24xx-i2s.h"
  41
  42 /* define the scenarios */
  43 #define NEO_AUDIO_OFF                   0
  44 #define NEO_GSM_CALL_AUDIO_HANDSET      1
  45 #define NEO_GSM_CALL_AUDIO_HEADSET      2
  46 #define NEO_GSM_CALL_AUDIO_BLUETOOTH    3
  47 #define NEO_STEREO_TO_SPEAKERS          4
  48 #define NEO_STEREO_TO_HEADPHONES        5
  49 #define NEO_CAPTURE_HANDSET             6
  50 #define NEO_CAPTURE_HEADSET             7
  51 #define NEO_CAPTURE_BLUETOOTH           8
  52
  53 static struct snd_soc_card neo1973;
  54 static struct i2c_client *i2c;
  55
  56 static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
  57         struct snd_pcm_hw_params *params)
  58 {
  59         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  60         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
  61         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  62         unsigned int pll_out = 0, bclk = 0;
  63         int ret = 0;
  64         unsigned long iis_clkrate;
  65
  66         pr_debug("Entered %s\n", __func__);
  67
  68         iis_clkrate = s3c24xx_i2s_get_clockrate();
  69
  70         switch (params_rate(params)) {
  71         case 8000:
  72         case 16000:
  73                 pll_out = 12288000;
  74                 break;
  75         case 48000:
  76                 bclk = WM8753_BCLK_DIV_4;
  77                 pll_out = 12288000;
  78                 break;
  79         case 96000:
  80                 bclk = WM8753_BCLK_DIV_2;
  81                 pll_out = 12288000;
  82                 break;
  83         case 11025:
  84                 bclk = WM8753_BCLK_DIV_16;
  85                 pll_out = 11289600;
  86                 break;
  87         case 22050:
  88                 bclk = WM8753_BCLK_DIV_8;
  89                 pll_out = 11289600;
  90                 break;
  91         case 44100:
  92                 bclk = WM8753_BCLK_DIV_4;
  93                 pll_out = 11289600;
  94                 break;
  95         case 88200:
  96                 bclk = WM8753_BCLK_DIV_2;
  97                 pll_out = 11289600;
  98                 break;
  99         }
 100
 101         /* set codec DAI configuration */
 102         ret = snd_soc_dai_set_fmt(codec_dai,
 103                 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 104                 SND_SOC_DAIFMT_CBM_CFM);
 105         if (ret < 0)
 106                 return ret;
 107
 108         /* set cpu DAI configuration */
 109         ret = snd_soc_dai_set_fmt(cpu_dai,
 110                 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 111                 SND_SOC_DAIFMT_CBM_CFM);
 112         if (ret < 0)
 113                 return ret;
 114
 115         /* set the codec system clock for DAC and ADC */
 116         ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
 117                 SND_SOC_CLOCK_IN);
 118         if (ret < 0)
 119                 return ret;
 120
 121         /* set MCLK division for sample rate */
 122         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
 123                 S3C2410_IISMOD_32FS);
 124         if (ret < 0)
 125                 return ret;
 126
 127         /* set codec BCLK division for sample rate */
 128         ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
 129         if (ret < 0)
 130                 return ret;
 131
 132         /* set prescaler division for sample rate */
 133         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
 134                 S3C24XX_PRESCALE(4, 4));
 135         if (ret < 0)
 136                 return ret;
 137
 138         /* codec PLL input is PCLK/4 */
 139         ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0,
 140                 iis_clkrate / 4, pll_out);
 141         if (ret < 0)
 142                 return ret;
 143
 144         return 0;
 145 }
 146
 147 static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
 148 {
 149         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 150         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
 151
 152         pr_debug("Entered %s\n", __func__);
 153
 154         /* disable the PLL */
 155         return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0);
 156 }
 157
 158 /*
 159  * Neo1973 WM8753 HiFi DAI opserations.
 160  */
 161 static struct snd_soc_ops neo1973_hifi_ops = {
 162         .hw_params = neo1973_hifi_hw_params,
 163         .hw_free = neo1973_hifi_hw_free,
 164 };
 165
 166 static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
 167         struct snd_pcm_hw_params *params)
 168 {
 169         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 170         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
 171         unsigned int pcmdiv = 0;
 172         int ret = 0;
 173         unsigned long iis_clkrate;
 174
 175         pr_debug("Entered %s\n", __func__);
 176
 177         iis_clkrate = s3c24xx_i2s_get_clockrate();
 178
 179         if (params_rate(params) != 8000)
 180                 return -EINVAL;
 181         if (params_channels(params) != 1)
 182                 return -EINVAL;
 183
 184         pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
 185
 186         /* todo: gg check mode (DSP_B) against CSR datasheet */
 187         /* set codec DAI configuration */
 188         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
 189                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 190         if (ret < 0)
 191                 return ret;
 192
 193         /* set the codec system clock for DAC and ADC */
 194         ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
 195                 SND_SOC_CLOCK_IN);
 196         if (ret < 0)
 197                 return ret;
 198
 199         /* set codec PCM division for sample rate */
 200         ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
 201         if (ret < 0)
 202                 return ret;
 203
 204         /* configue and enable PLL for 12.288MHz output */
 205         ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0,
 206                 iis_clkrate / 4, 12288000);
 207         if (ret < 0)
 208                 return ret;
 209
 210         return 0;
 211 }
 212
 213 static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
 214 {
 215         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 216         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
 217
 218         pr_debug("Entered %s\n", __func__);
 219
 220         /* disable the PLL */
 221         return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0);
 222 }
 223
 224 static struct snd_soc_ops neo1973_voice_ops = {
 225         .hw_params = neo1973_voice_hw_params,
 226         .hw_free = neo1973_voice_hw_free,
 227 };
 228
 229 static int neo1973_scenario;
 230
 231 static int neo1973_get_scenario(struct snd_kcontrol *kcontrol,
 232         struct snd_ctl_elem_value *ucontrol)
 233 {
 234         ucontrol->value.integer.value[0] = neo1973_scenario;
 235         return 0;
 236 }
 237
 238 static int set_scenario_endpoints(struct snd_soc_codec *codec, int scenario)
 239 {
 240         pr_debug("Entered %s\n", __func__);
 241
 242         switch (neo1973_scenario) {
 243         case NEO_AUDIO_OFF:
 244                 snd_soc_dapm_disable_pin(codec, "Audio Out");
 245                 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
 246                 snd_soc_dapm_disable_pin(codec, "GSM Line In");
 247                 snd_soc_dapm_disable_pin(codec, "Headset Mic");
 248                 snd_soc_dapm_disable_pin(codec, "Call Mic");
 249                 break;
 250         case NEO_GSM_CALL_AUDIO_HANDSET:
 251                 snd_soc_dapm_enable_pin(codec, "Audio Out");
 252                 snd_soc_dapm_enable_pin(codec, "GSM Line Out");
 253                 snd_soc_dapm_enable_pin(codec, "GSM Line In");
 254                 snd_soc_dapm_disable_pin(codec, "Headset Mic");
 255                 snd_soc_dapm_enable_pin(codec, "Call Mic");
 256                 break;
 257         case NEO_GSM_CALL_AUDIO_HEADSET:
 258                 snd_soc_dapm_enable_pin(codec, "Audio Out");
 259                 snd_soc_dapm_enable_pin(codec, "GSM Line Out");
 260                 snd_soc_dapm_enable_pin(codec, "GSM Line In");
 261                 snd_soc_dapm_enable_pin(codec, "Headset Mic");
 262                 snd_soc_dapm_disable_pin(codec, "Call Mic");
 263                 break;
 264         case NEO_GSM_CALL_AUDIO_BLUETOOTH:
 265                 snd_soc_dapm_disable_pin(codec, "Audio Out");
 266                 snd_soc_dapm_enable_pin(codec, "GSM Line Out");
 267                 snd_soc_dapm_enable_pin(codec, "GSM Line In");
 268                 snd_soc_dapm_disable_pin(codec, "Headset Mic");
 269                 snd_soc_dapm_disable_pin(codec, "Call Mic");
 270                 break;
 271         case NEO_STEREO_TO_SPEAKERS:
 272                 snd_soc_dapm_enable_pin(codec, "Audio Out");
 273                 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
 274                 snd_soc_dapm_disable_pin(codec, "GSM Line In");
 275                 snd_soc_dapm_disable_pin(codec, "Headset Mic");
 276                 snd_soc_dapm_disable_pin(codec, "Call Mic");
 277                 break;
 278         case NEO_STEREO_TO_HEADPHONES:
 279                 snd_soc_dapm_enable_pin(codec, "Audio Out");
 280                 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
 281                 snd_soc_dapm_disable_pin(codec, "GSM Line In");
 282                 snd_soc_dapm_disable_pin(codec, "Headset Mic");
 283                 snd_soc_dapm_disable_pin(codec, "Call Mic");
 284                 break;
 285         case NEO_CAPTURE_HANDSET:
 286                 snd_soc_dapm_disable_pin(codec, "Audio Out");
 287                 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
 288                 snd_soc_dapm_disable_pin(codec, "GSM Line In");
 289                 snd_soc_dapm_disable_pin(codec, "Headset Mic");
 290                 snd_soc_dapm_enable_pin(codec, "Call Mic");
 291                 break;
 292         case NEO_CAPTURE_HEADSET:
 293                 snd_soc_dapm_disable_pin(codec, "Audio Out");
 294                 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
 295                 snd_soc_dapm_disable_pin(codec, "GSM Line In");
 296                 snd_soc_dapm_enable_pin(codec, "Headset Mic");
 297                 snd_soc_dapm_disable_pin(codec, "Call Mic");
 298                 break;
 299         case NEO_CAPTURE_BLUETOOTH:
 300                 snd_soc_dapm_disable_pin(codec, "Audio Out");
 301                 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
 302                 snd_soc_dapm_disable_pin(codec, "GSM Line In");
 303                 snd_soc_dapm_disable_pin(codec, "Headset Mic");
 304                 snd_soc_dapm_disable_pin(codec, "Call Mic");
 305                 break;
 306         default:
 307                 snd_soc_dapm_disable_pin(codec, "Audio Out");
 308                 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
 309                 snd_soc_dapm_disable_pin(codec, "GSM Line In");
 310                 snd_soc_dapm_disable_pin(codec, "Headset Mic");
 311                 snd_soc_dapm_disable_pin(codec, "Call Mic");
 312         }
 313
 314         snd_soc_dapm_sync(codec);
 315
 316         return 0;
 317 }
 318
 319 static int neo1973_set_scenario(struct snd_kcontrol *kcontrol,
 320         struct snd_ctl_elem_value *ucontrol)
 321 {
 322         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 323
 324         pr_debug("Entered %s\n", __func__);
 325
 326         if (neo1973_scenario == ucontrol->value.integer.value[0])
 327                 return 0;
 328
 329         neo1973_scenario = ucontrol->value.integer.value[0];
 330         set_scenario_endpoints(codec, neo1973_scenario);
 331         return 1;
 332 }
 333
 334 static u8 lm4857_regs[4] = {0x00, 0x40, 0x80, 0xC0};
 335
 336 static void lm4857_write_regs(void)
 337 {
 338         pr_debug("Entered %s\n", __func__);
 339
 340         if (i2c_master_send(i2c, lm4857_regs, 4) != 4)
 341                 printk(KERN_ERR "lm4857: i2c write failed\n");
 342 }
 343
 344 static int lm4857_get_reg(struct snd_kcontrol *kcontrol,
 345         struct snd_ctl_elem_value *ucontrol)
 346 {
 347         struct soc_mixer_control *mc =
 348                 (struct soc_mixer_control *)kcontrol->private_value;
 349         int reg = mc->reg;
 350         int shift = mc->shift;
 351         int mask = mc->max;
 352
 353         pr_debug("Entered %s\n", __func__);
 354
 355         ucontrol->value.integer.value[0] = (lm4857_regs[reg] >> shift) & mask;
 356         return 0;
 357 }
 358
 359 static int lm4857_set_reg(struct snd_kcontrol *kcontrol,
 360         struct snd_ctl_elem_value *ucontrol)
 361 {
 362         struct soc_mixer_control *mc =
 363                 (struct soc_mixer_control *)kcontrol->private_value;
 364         int reg = mc->reg;
 365         int shift = mc->shift;
 366         int mask = mc->max;
 367
 368         if (((lm4857_regs[reg] >> shift) & mask) ==
 369                 ucontrol->value.integer.value[0])
 370                 return 0;
 371
 372         lm4857_regs[reg] &= ~(mask << shift);
 373         lm4857_regs[reg] |= ucontrol->value.integer.value[0] << shift;
 374         lm4857_write_regs();
 375         return 1;
 376 }
 377
 378 static int lm4857_get_mode(struct snd_kcontrol *kcontrol,
 379         struct snd_ctl_elem_value *ucontrol)
 380 {
 381         u8 value = lm4857_regs[LM4857_CTRL] & 0x0F;
 382
 383         pr_debug("Entered %s\n", __func__);
 384
 385         if (value)
 386                 value -= 5;
 387
 388         ucontrol->value.integer.value[0] = value;
 389         return 0;
 390 }
 391
 392 static int lm4857_set_mode(struct snd_kcontrol *kcontrol,
 393         struct snd_ctl_elem_value *ucontrol)
 394 {
 395         u8 value = ucontrol->value.integer.value[0];
 396
 397         pr_debug("Entered %s\n", __func__);
 398
 399         if (value)
 400                 value += 5;
 401
 402         if ((lm4857_regs[LM4857_CTRL] & 0x0F) == value)
 403                 return 0;
 404
 405         lm4857_regs[LM4857_CTRL] &= 0xF0;
 406         lm4857_regs[LM4857_CTRL] |= value;
 407         lm4857_write_regs();
 408         return 1;
 409 }
 410
 411 static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
 412         SND_SOC_DAPM_LINE("Audio Out", NULL),
 413         SND_SOC_DAPM_LINE("GSM Line Out", NULL),
 414         SND_SOC_DAPM_LINE("GSM Line In", NULL),
 415         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 416         SND_SOC_DAPM_MIC("Call Mic", NULL),
 417 };
 418
 419
 420 static const struct snd_soc_dapm_route dapm_routes[] = {
 421
 422         /* Connections to the lm4857 amp */
 423         {"Audio Out", NULL, "LOUT1"},
 424         {"Audio Out", NULL, "ROUT1"},
 425
 426         /* Connections to the GSM Module */
 427         {"GSM Line Out", NULL, "MONO1"},
 428         {"GSM Line Out", NULL, "MONO2"},
 429         {"RXP", NULL, "GSM Line In"},
 430         {"RXN", NULL, "GSM Line In"},
 431
 432         /* Connections to Headset */
 433         {"MIC1", NULL, "Mic Bias"},
 434         {"Mic Bias", NULL, "Headset Mic"},
 435
 436         /* Call Mic */
 437         {"MIC2", NULL, "Mic Bias"},
 438         {"MIC2N", NULL, "Mic Bias"},
 439         {"Mic Bias", NULL, "Call Mic"},
 440
 441         /* Connect the ALC pins */
 442         {"ACIN", NULL, "ACOP"},
 443 };
 444
 445 static const char *lm4857_mode[] = {
 446         "Off",
 447         "Call Speaker",
 448         "Stereo Speakers",
 449         "Stereo Speakers + Headphones",
 450         "Headphones"
 451 };
 452
 453 static const struct soc_enum lm4857_mode_enum[] = {
 454         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(lm4857_mode), lm4857_mode),
 455 };
 456
 457 static const char *neo_scenarios[] = {
 458         "Off",
 459         "GSM Handset",
 460         "GSM Headset",
 461         "GSM Bluetooth",
 462         "Speakers",
 463         "Headphones",
 464         "Capture Handset",
 465         "Capture Headset",
 466         "Capture Bluetooth"
 467 };
 468
 469 static const struct soc_enum neo_scenario_enum[] = {
 470         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(neo_scenarios), neo_scenarios),
 471 };
 472
 473 static const DECLARE_TLV_DB_SCALE(stereo_tlv, -4050, 150, 0);
 474 static const DECLARE_TLV_DB_SCALE(mono_tlv, -3450, 150, 0);
 475
 476 static const struct snd_kcontrol_new wm8753_neo1973_controls[] = {
 477         SOC_SINGLE_EXT_TLV("Amp Left Playback Volume", LM4857_LVOL, 0, 31, 0,
 478                 lm4857_get_reg, lm4857_set_reg, stereo_tlv),
 479         SOC_SINGLE_EXT_TLV("Amp Right Playback Volume", LM4857_RVOL, 0, 31, 0,
 480                 lm4857_get_reg, lm4857_set_reg, stereo_tlv),
 481         SOC_SINGLE_EXT_TLV("Amp Mono Playback Volume", LM4857_MVOL, 0, 31, 0,
 482                 lm4857_get_reg, lm4857_set_reg, mono_tlv),
 483         SOC_ENUM_EXT("Amp Mode", lm4857_mode_enum[0],
 484                 lm4857_get_mode, lm4857_set_mode),
 485         SOC_ENUM_EXT("Neo Mode", neo_scenario_enum[0],
 486                 neo1973_get_scenario, neo1973_set_scenario),
 487         SOC_SINGLE_EXT("Amp Spk 3D Playback Switch", LM4857_LVOL, 5, 1, 0,
 488                 lm4857_get_reg, lm4857_set_reg),
 489         SOC_SINGLE_EXT("Amp HP 3d Playback Switch", LM4857_RVOL, 5, 1, 0,
 490                 lm4857_get_reg, lm4857_set_reg),
 491         SOC_SINGLE_EXT("Amp Fast Wakeup Playback Switch", LM4857_CTRL, 5, 1, 0,
 492                 lm4857_get_reg, lm4857_set_reg),
 493         SOC_SINGLE_EXT("Amp Earpiece 6dB Playback Switch", LM4857_CTRL, 4, 1, 0,
 494                 lm4857_get_reg, lm4857_set_reg),
 495 };
 496
 497 /*
 498  * This is an example machine initialisation for a wm8753 connected to a
 499  * neo1973 II. It is missing logic to detect hp/mic insertions and logic
 500  * to re-route the audio in such an event.
 501  */
 502 static int neo1973_wm8753_init(struct snd_soc_codec *codec)
 503 {
 504         int err;
 505
 506         pr_debug("Entered %s\n", __func__);
 507
 508         /* set up NC codec pins */
 509         snd_soc_dapm_nc_pin(codec, "LOUT2");
 510         snd_soc_dapm_nc_pin(codec, "ROUT2");
 511         snd_soc_dapm_nc_pin(codec, "OUT3");
 512         snd_soc_dapm_nc_pin(codec, "OUT4");
 513         snd_soc_dapm_nc_pin(codec, "LINE1");
 514         snd_soc_dapm_nc_pin(codec, "LINE2");
 515
 516         /* Add neo1973 specific widgets */
 517         snd_soc_dapm_new_controls(codec, wm8753_dapm_widgets,
 518                                   ARRAY_SIZE(wm8753_dapm_widgets));
 519
 520         /* set endpoints to default mode */
 521         set_scenario_endpoints(codec, NEO_AUDIO_OFF);
 522
 523         /* add neo1973 specific controls */
 524         err = snd_soc_add_controls(codec, wm8753_neo1973_controls,
 525                                 ARRAY_SIZE(8753_neo1973_controls));
 526         if (err < 0)
 527                 return err;
 528
 529         /* set up neo1973 specific audio routes */
 530         err = snd_soc_dapm_add_routes(codec, dapm_routes,
 531                                       ARRAY_SIZE(dapm_routes));
 532
 533         snd_soc_dapm_sync(codec);
 534         return 0;
 535 }
 536
 537 /*
 538  * BT Codec DAI
 539  */
 540 static struct snd_soc_dai bt_dai = {
 541         .name = "Bluetooth",
 542         .id = 0,
 543         .playback = {
 544                 .channels_min = 1,
 545                 .channels_max = 1,
 546                 .rates = SNDRV_PCM_RATE_8000,
 547                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 548         .capture = {
 549                 .channels_min = 1,
 550                 .channels_max = 1,
 551                 .rates = SNDRV_PCM_RATE_8000,
 552                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 553 };
 554
 555 static struct snd_soc_dai_link neo1973_dai[] = {
 556 { /* Hifi Playback - for similatious use with voice below */
 557         .name = "WM8753",
 558         .stream_name = "WM8753 HiFi",
 559         .cpu_dai = &s3c24xx_i2s_dai,
 560         .codec_dai = &wm8753_dai[WM8753_DAI_HIFI],
 561         .init = neo1973_wm8753_init,
 562         .ops = &neo1973_hifi_ops,
 563 },
 564 { /* Voice via BT */
 565         .name = "Bluetooth",
 566         .stream_name = "Voice",
 567         .cpu_dai = &bt_dai,
 568         .codec_dai = &wm8753_dai[WM8753_DAI_VOICE],
 569         .ops = &neo1973_voice_ops,
 570 },
 571 };
 572
 573 static struct snd_soc_card neo1973 = {
 574         .name = "neo1973",
 575         .platform = &s3c24xx_soc_platform,
 576         .dai_link = neo1973_dai,
 577         .num_links = ARRAY_SIZE(neo1973_dai),
 578 };
 579
 580 static struct snd_soc_device neo1973_snd_devdata = {
 581         .card = &neo1973,
 582         .codec_dev = &soc_codec_dev_wm8753,
 583 };
 584
 585 static int lm4857_i2c_probe(struct i2c_client *client,
 586                             const struct i2c_device_id *id)
 587 {
 588         pr_debug("Entered %s\n", __func__);
 589
 590         i2c = client;
 591
 592         lm4857_write_regs();
 593         return 0;
 594 }
 595
 596 static int lm4857_i2c_remove(struct i2c_client *client)
 597 {
 598         pr_debug("Entered %s\n", __func__);
 599
 600         i2c = NULL;
 601
 602         return 0;
 603 }
 604
 605 static u8 lm4857_state;
 606
 607 static int lm4857_suspend(struct i2c_client *dev, pm_message_t state)
 608 {
 609         pr_debug("Entered %s\n", __func__);
 610
 611         dev_dbg(&dev->dev, "lm4857_suspend\n");
 612         lm4857_state = lm4857_regs[LM4857_CTRL] & 0xf;
 613         if (lm4857_state) {
 614                 lm4857_regs[LM4857_CTRL] &= 0xf0;
 615                 lm4857_write_regs();
 616         }
 617         return 0;
 618 }
 619
 620 static int lm4857_resume(struct i2c_client *dev)
 621 {
 622         pr_debug("Entered %s\n", __func__);
 623
 624         if (lm4857_state) {
 625                 lm4857_regs[LM4857_CTRL] |= (lm4857_state & 0x0f);
 626                 lm4857_write_regs();
 627         }
 628         return 0;
 629 }
 630
 631 static void lm4857_shutdown(struct i2c_client *dev)
 632 {
 633         pr_debug("Entered %s\n", __func__);
 634
 635         dev_dbg(&dev->dev, "lm4857_shutdown\n");
 636         lm4857_regs[LM4857_CTRL] &= 0xf0;
 637         lm4857_write_regs();
 638 }
 639
 640 static const struct i2c_device_id lm4857_i2c_id[] = {
 641         { "neo1973_lm4857", 0 },
 642         { }
 643 };
 644
 645 static struct i2c_driver lm4857_i2c_driver = {
 646         .driver = {
 647                 .name = "LM4857 I2C Amp",
 648                 .owner = THIS_MODULE,
 649         },
 650         .suspend =        lm4857_suspend,
 651         .resume =         lm4857_resume,
 652         .shutdown =       lm4857_shutdown,
 653         .probe =          lm4857_i2c_probe,
 654         .remove =         lm4857_i2c_remove,
 655         .id_table =       lm4857_i2c_id,
 656 };
 657
 658 static struct platform_device *neo1973_snd_device;
 659
 660 static int __init neo1973_init(void)
 661 {
 662         int ret;
 663
 664         pr_debug("Entered %s\n", __func__);
 665
 666         if (!machine_is_neo1973_gta01()) {
 667                 printk(KERN_INFO
 668                         "Only GTA01 hardware supported by ASoC driver\n");
 669                 return -ENODEV;
 670         }
 671
 672         neo1973_snd_device = platform_device_alloc("soc-audio", -1);
 673         if (!neo1973_snd_device)
 674                 return -ENOMEM;
 675
 676         platform_set_drvdata(neo1973_snd_device, &neo1973_snd_devdata);
 677         neo1973_snd_devdata.dev = &neo1973_snd_device->dev;
 678         ret = platform_device_add(neo1973_snd_device);
 679
 680         if (ret) {
 681                 platform_device_put(neo1973_snd_device);
 682                 return ret;
 683         }
 684
 685         ret = i2c_add_driver(&lm4857_i2c_driver);
 686
 687         if (ret != 0)
 688                 platform_device_unregister(neo1973_snd_device);
 689
 690         return ret;
 691 }
 692
 693 static void __exit neo1973_exit(void)
 694 {
 695         pr_debug("Entered %s\n", __func__);
 696
 697         i2c_del_driver(&lm4857_i2c_driver);
 698         platform_device_unregister(neo1973_snd_device);
 699 }
 700
 701 module_init(neo1973_init);
 702 module_exit(neo1973_exit);
 703
 704 /* Module information */
 705 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
 706 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973");
 707 MODULE_LICENSE("GPL");