sound/soc/samsung/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/tlv.h>
  25
  26 #include <asm/mach-types.h>
  27 #include <asm/hardware/scoop.h>
  28 #include <mach/regs-clock.h>
  29 #include <mach/regs-gpio.h>
  30 #include <mach/hardware.h>
  31 #include <linux/io.h>
  32 #include <mach/spi-gpio.h>
  33
  34 #include <plat/regs-iis.h>
  35
  36 #include "../codecs/wm8753.h"
  37 #include "lm4857.h"
  38 #include "dma.h"
  39 #include "s3c24xx-i2s.h"
  40
  41 /* define the scenarios */
  42 #define NEO_AUDIO_OFF                   0
  43 #define NEO_GSM_CALL_AUDIO_HANDSET      1
  44 #define NEO_GSM_CALL_AUDIO_HEADSET      2
  45 #define NEO_GSM_CALL_AUDIO_BLUETOOTH    3
  46 #define NEO_STEREO_TO_SPEAKERS          4
  47 #define NEO_STEREO_TO_HEADPHONES        5
  48 #define NEO_CAPTURE_HANDSET             6
  49 #define NEO_CAPTURE_HEADSET             7
  50 #define NEO_CAPTURE_BLUETOOTH           8
  51
  52 static struct snd_soc_card neo1973;
  53 static struct i2c_client *i2c;
  54
  55 static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
  56         struct snd_pcm_hw_params *params)
  57 {
  58         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  59         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  60         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  61         unsigned int pll_out = 0, bclk = 0;
  62         int ret = 0;
  63         unsigned long iis_clkrate;
  64
  65         pr_debug("Entered %s\n", __func__);
  66
  67         iis_clkrate = s3c24xx_i2s_get_clockrate();
  68
  69         switch (params_rate(params)) {
  70         case 8000:
  71         case 16000:
  72                 pll_out = 12288000;
  73                 break;
  74         case 48000:
  75                 bclk = WM8753_BCLK_DIV_4;
  76                 pll_out = 12288000;
  77                 break;
  78         case 96000:
  79                 bclk = WM8753_BCLK_DIV_2;
  80                 pll_out = 12288000;
  81                 break;
  82         case 11025:
  83                 bclk = WM8753_BCLK_DIV_16;
  84                 pll_out = 11289600;
  85                 break;
  86         case 22050:
  87                 bclk = WM8753_BCLK_DIV_8;
  88                 pll_out = 11289600;
  89                 break;
  90         case 44100:
  91                 bclk = WM8753_BCLK_DIV_4;
  92                 pll_out = 11289600;
  93                 break;
  94         case 88200:
  95                 bclk = WM8753_BCLK_DIV_2;
  96                 pll_out = 11289600;
  97                 break;
  98         }
  99
 100         /* set codec DAI configuration */
 101         ret = snd_soc_dai_set_fmt(codec_dai,
 102                 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 103                 SND_SOC_DAIFMT_CBM_CFM);
 104         if (ret < 0)
 105                 return ret;
 106
 107         /* set cpu DAI configuration */
 108         ret = snd_soc_dai_set_fmt(cpu_dai,
 109                 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 110                 SND_SOC_DAIFMT_CBM_CFM);
 111         if (ret < 0)
 112                 return ret;
 113
 114         /* set the codec system clock for DAC and ADC */
 115         ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
 116                 SND_SOC_CLOCK_IN);
 117         if (ret < 0)
 118                 return ret;
 119
 120         /* set MCLK division for sample rate */
 121         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
 122                 S3C2410_IISMOD_32FS);
 123         if (ret < 0)
 124                 return ret;
 125
 126         /* set codec BCLK division for sample rate */
 127         ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
 128         if (ret < 0)
 129                 return ret;
 130
 131         /* set prescaler division for sample rate */
 132         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
 133                 S3C24XX_PRESCALE(4, 4));
 134         if (ret < 0)
 135                 return ret;
 136
 137         /* codec PLL input is PCLK/4 */
 138         ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0,
 139                 iis_clkrate / 4, pll_out);
 140         if (ret < 0)
 141                 return ret;
 142
 143         return 0;
 144 }
 145
 146 static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
 147 {
 148         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 149         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 150
 151         pr_debug("Entered %s\n", __func__);
 152
 153         /* disable the PLL */
 154         return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0);
 155 }
 156
 157 /*
 158  * Neo1973 WM8753 HiFi DAI opserations.
 159  */
 160 static struct snd_soc_ops neo1973_hifi_ops = {
 161         .hw_params = neo1973_hifi_hw_params,
 162         .hw_free = neo1973_hifi_hw_free,
 163 };
 164
 165 static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
 166         struct snd_pcm_hw_params *params)
 167 {
 168         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 169         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 170         unsigned int pcmdiv = 0;
 171         int ret = 0;
 172         unsigned long iis_clkrate;
 173
 174         pr_debug("Entered %s\n", __func__);
 175
 176         iis_clkrate = s3c24xx_i2s_get_clockrate();
 177
 178         if (params_rate(params) != 8000)
 179                 return -EINVAL;
 180         if (params_channels(params) != 1)
 181                 return -EINVAL;
 182
 183         pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
 184
 185         /* todo: gg check mode (DSP_B) against CSR datasheet */
 186         /* set codec DAI configuration */
 187         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
 188                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 189         if (ret < 0)
 190                 return ret;
 191
 192         /* set the codec system clock for DAC and ADC */
 193         ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
 194                 SND_SOC_CLOCK_IN);
 195         if (ret < 0)
 196                 return ret;
 197
 198         /* set codec PCM division for sample rate */
 199         ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
 200         if (ret < 0)
 201                 return ret;
 202
 203         /* configure and enable PLL for 12.288MHz output */
 204         ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0,
 205                 iis_clkrate / 4, 12288000);
 206         if (ret < 0)
 207                 return ret;
 208
 209         return 0;
 210 }
 211
 212 static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
 213 {
 214         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 215         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 216
 217         pr_debug("Entered %s\n", __func__);
 218
 219         /* disable the PLL */
 220         return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0);
 221 }
 222
 223 static struct snd_soc_ops neo1973_voice_ops = {
 224         .hw_params = neo1973_voice_hw_params,
 225         .hw_free = neo1973_voice_hw_free,
 226 };
 227
 228 static int neo1973_scenario;
 229
 230 static int neo1973_get_scenario(struct snd_kcontrol *kcontrol,
 231         struct snd_ctl_elem_value *ucontrol)
 232 {
 233         ucontrol->value.integer.value[0] = neo1973_scenario;
 234         return 0;
 235 }
 236
 237 static int set_scenario_endpoints(struct snd_soc_codec *codec, int scenario)
 238 {
 239         struct snd_soc_dapm_context *dapm = &codec->dapm;
 240
 241         pr_debug("Entered %s\n", __func__);
 242
 243         switch (neo1973_scenario) {
 244         case NEO_AUDIO_OFF:
 245                 snd_soc_dapm_disable_pin(dapm, "Audio Out");
 246                 snd_soc_dapm_disable_pin(dapm, "GSM Line Out");
 247                 snd_soc_dapm_disable_pin(dapm, "GSM Line In");
 248                 snd_soc_dapm_disable_pin(dapm, "Headset Mic");
 249                 snd_soc_dapm_disable_pin(dapm, "Call Mic");
 250                 break;
 251         case NEO_GSM_CALL_AUDIO_HANDSET:
 252                 snd_soc_dapm_enable_pin(dapm, "Audio Out");
 253                 snd_soc_dapm_enable_pin(dapm, "GSM Line Out");
 254                 snd_soc_dapm_enable_pin(dapm, "GSM Line In");
 255                 snd_soc_dapm_disable_pin(dapm, "Headset Mic");
 256                 snd_soc_dapm_enable_pin(dapm, "Call Mic");
 257                 break;
 258         case NEO_GSM_CALL_AUDIO_HEADSET:
 259                 snd_soc_dapm_enable_pin(dapm, "Audio Out");
 260                 snd_soc_dapm_enable_pin(dapm, "GSM Line Out");
 261                 snd_soc_dapm_enable_pin(dapm, "GSM Line In");
 262                 snd_soc_dapm_enable_pin(dapm, "Headset Mic");
 263                 snd_soc_dapm_disable_pin(dapm, "Call Mic");
 264                 break;
 265         case NEO_GSM_CALL_AUDIO_BLUETOOTH:
 266                 snd_soc_dapm_disable_pin(dapm, "Audio Out");
 267                 snd_soc_dapm_enable_pin(dapm, "GSM Line Out");
 268                 snd_soc_dapm_enable_pin(dapm, "GSM Line In");
 269                 snd_soc_dapm_disable_pin(dapm, "Headset Mic");
 270                 snd_soc_dapm_disable_pin(dapm, "Call Mic");
 271                 break;
 272         case NEO_STEREO_TO_SPEAKERS:
 273                 snd_soc_dapm_enable_pin(dapm, "Audio Out");
 274                 snd_soc_dapm_disable_pin(dapm, "GSM Line Out");
 275                 snd_soc_dapm_disable_pin(dapm, "GSM Line In");
 276                 snd_soc_dapm_disable_pin(dapm, "Headset Mic");
 277                 snd_soc_dapm_disable_pin(dapm, "Call Mic");
 278                 break;
 279         case NEO_STEREO_TO_HEADPHONES:
 280                 snd_soc_dapm_enable_pin(dapm, "Audio Out");
 281                 snd_soc_dapm_disable_pin(dapm, "GSM Line Out");
 282                 snd_soc_dapm_disable_pin(dapm, "GSM Line In");
 283                 snd_soc_dapm_disable_pin(dapm, "Headset Mic");
 284                 snd_soc_dapm_disable_pin(dapm, "Call Mic");
 285                 break;
 286         case NEO_CAPTURE_HANDSET:
 287                 snd_soc_dapm_disable_pin(dapm, "Audio Out");
 288                 snd_soc_dapm_disable_pin(dapm, "GSM Line Out");
 289                 snd_soc_dapm_disable_pin(dapm, "GSM Line In");
 290                 snd_soc_dapm_disable_pin(dapm, "Headset Mic");
 291                 snd_soc_dapm_enable_pin(dapm, "Call Mic");
 292                 break;
 293         case NEO_CAPTURE_HEADSET:
 294                 snd_soc_dapm_disable_pin(dapm, "Audio Out");
 295                 snd_soc_dapm_disable_pin(dapm, "GSM Line Out");
 296                 snd_soc_dapm_disable_pin(dapm, "GSM Line In");
 297                 snd_soc_dapm_enable_pin(dapm, "Headset Mic");
 298                 snd_soc_dapm_disable_pin(dapm, "Call Mic");
 299                 break;
 300         case NEO_CAPTURE_BLUETOOTH:
 301                 snd_soc_dapm_disable_pin(dapm, "Audio Out");
 302                 snd_soc_dapm_disable_pin(dapm, "GSM Line Out");
 303                 snd_soc_dapm_disable_pin(dapm, "GSM Line In");
 304                 snd_soc_dapm_disable_pin(dapm, "Headset Mic");
 305                 snd_soc_dapm_disable_pin(dapm, "Call Mic");
 306                 break;
 307         default:
 308                 snd_soc_dapm_disable_pin(dapm, "Audio Out");
 309                 snd_soc_dapm_disable_pin(dapm, "GSM Line Out");
 310                 snd_soc_dapm_disable_pin(dapm, "GSM Line In");
 311                 snd_soc_dapm_disable_pin(dapm, "Headset Mic");
 312                 snd_soc_dapm_disable_pin(dapm, "Call Mic");
 313         }
 314
 315         snd_soc_dapm_sync(dapm);
 316
 317         return 0;
 318 }
 319
 320 static int neo1973_set_scenario(struct snd_kcontrol *kcontrol,
 321         struct snd_ctl_elem_value *ucontrol)
 322 {
 323         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 324
 325         pr_debug("Entered %s\n", __func__);
 326
 327         if (neo1973_scenario == ucontrol->value.integer.value[0])
 328                 return 0;
 329
 330         neo1973_scenario = ucontrol->value.integer.value[0];
 331         set_scenario_endpoints(codec, neo1973_scenario);
 332         return 1;
 333 }
 334
 335 static u8 lm4857_regs[4] = {0x00, 0x40, 0x80, 0xC0};
 336
 337 static void lm4857_write_regs(void)
 338 {
 339         pr_debug("Entered %s\n", __func__);
 340
 341         if (i2c_master_send(i2c, lm4857_regs, 4) != 4)
 342                 printk(KERN_ERR "lm4857: i2c write failed\n");
 343 }
 344
 345 static int lm4857_get_reg(struct snd_kcontrol *kcontrol,
 346         struct snd_ctl_elem_value *ucontrol)
 347 {
 348         struct soc_mixer_control *mc =
 349                 (struct soc_mixer_control *)kcontrol->private_value;
 350         int reg = mc->reg;
 351         int shift = mc->shift;
 352         int mask = mc->max;
 353
 354         pr_debug("Entered %s\n", __func__);
 355
 356         ucontrol->value.integer.value[0] = (lm4857_regs[reg] >> shift) & mask;
 357         return 0;
 358 }
 359
 360 static int lm4857_set_reg(struct snd_kcontrol *kcontrol,
 361         struct snd_ctl_elem_value *ucontrol)
 362 {
 363         struct soc_mixer_control *mc =
 364                 (struct soc_mixer_control *)kcontrol->private_value;
 365         int reg = mc->reg;
 366         int shift = mc->shift;
 367         int mask = mc->max;
 368
 369         if (((lm4857_regs[reg] >> shift) & mask) ==
 370                 ucontrol->value.integer.value[0])
 371                 return 0;
 372
 373         lm4857_regs[reg] &= ~(mask << shift);
 374         lm4857_regs[reg] |= ucontrol->value.integer.value[0] << shift;
 375         lm4857_write_regs();
 376         return 1;
 377 }
 378
 379 static int lm4857_get_mode(struct snd_kcontrol *kcontrol,
 380         struct snd_ctl_elem_value *ucontrol)
 381 {
 382         u8 value = lm4857_regs[LM4857_CTRL] & 0x0F;
 383
 384         pr_debug("Entered %s\n", __func__);
 385
 386         if (value)
 387                 value -= 5;
 388
 389         ucontrol->value.integer.value[0] = value;
 390         return 0;
 391 }
 392
 393 static int lm4857_set_mode(struct snd_kcontrol *kcontrol,
 394         struct snd_ctl_elem_value *ucontrol)
 395 {
 396         u8 value = ucontrol->value.integer.value[0];
 397
 398         pr_debug("Entered %s\n", __func__);
 399
 400         if (value)
 401                 value += 5;
 402
 403         if ((lm4857_regs[LM4857_CTRL] & 0x0F) == value)
 404                 return 0;
 405
 406         lm4857_regs[LM4857_CTRL] &= 0xF0;
 407         lm4857_regs[LM4857_CTRL] |= value;
 408         lm4857_write_regs();
 409         return 1;
 410 }
 411
 412 static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
 413         SND_SOC_DAPM_LINE("Audio Out", NULL),
 414         SND_SOC_DAPM_LINE("GSM Line Out", NULL),
 415         SND_SOC_DAPM_LINE("GSM Line In", NULL),
 416         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 417         SND_SOC_DAPM_MIC("Call Mic", NULL),
 418 };
 419
 420
 421 static const struct snd_soc_dapm_route dapm_routes[] = {
 422
 423         /* Connections to the lm4857 amp */
 424         {"Audio Out", NULL, "LOUT1"},
 425         {"Audio Out", NULL, "ROUT1"},
 426
 427         /* Connections to the GSM Module */
 428         {"GSM Line Out", NULL, "MONO1"},
 429         {"GSM Line Out", NULL, "MONO2"},
 430         {"RXP", NULL, "GSM Line In"},
 431         {"RXN", NULL, "GSM Line In"},
 432
 433         /* Connections to Headset */
 434         {"MIC1", NULL, "Mic Bias"},
 435         {"Mic Bias", NULL, "Headset Mic"},
 436
 437         /* Call Mic */
 438         {"MIC2", NULL, "Mic Bias"},
 439         {"MIC2N", NULL, "Mic Bias"},
 440         {"Mic Bias", NULL, "Call Mic"},
 441
 442         /* Connect the ALC pins */
 443         {"ACIN", NULL, "ACOP"},
 444 };
 445
 446 static const char *lm4857_mode[] = {
 447         "Off",
 448         "Call Speaker",
 449         "Stereo Speakers",
 450         "Stereo Speakers + Headphones",
 451         "Headphones"
 452 };
 453
 454 static const struct soc_enum lm4857_mode_enum[] = {
 455         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(lm4857_mode), lm4857_mode),
 456 };
 457
 458 static const char *neo_scenarios[] = {
 459         "Off",
 460         "GSM Handset",
 461         "GSM Headset",
 462         "GSM Bluetooth",
 463         "Speakers",
 464         "Headphones",
 465         "Capture Handset",
 466         "Capture Headset",
 467         "Capture Bluetooth"
 468 };
 469
 470 static const struct soc_enum neo_scenario_enum[] = {
 471         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(neo_scenarios), neo_scenarios),
 472 };
 473
 474 static const DECLARE_TLV_DB_SCALE(stereo_tlv, -4050, 150, 0);
 475 static const DECLARE_TLV_DB_SCALE(mono_tlv, -3450, 150, 0);
 476
 477 static const struct snd_kcontrol_new wm8753_neo1973_controls[] = {
 478         SOC_SINGLE_EXT_TLV("Amp Left Playback Volume", LM4857_LVOL, 0, 31, 0,
 479                 lm4857_get_reg, lm4857_set_reg, stereo_tlv),
 480         SOC_SINGLE_EXT_TLV("Amp Right Playback Volume", LM4857_RVOL, 0, 31, 0,
 481                 lm4857_get_reg, lm4857_set_reg, stereo_tlv),
 482         SOC_SINGLE_EXT_TLV("Amp Mono Playback Volume", LM4857_MVOL, 0, 31, 0,
 483                 lm4857_get_reg, lm4857_set_reg, mono_tlv),
 484         SOC_ENUM_EXT("Amp Mode", lm4857_mode_enum[0],
 485                 lm4857_get_mode, lm4857_set_mode),
 486         SOC_ENUM_EXT("Neo Mode", neo_scenario_enum[0],
 487                 neo1973_get_scenario, neo1973_set_scenario),
 488         SOC_SINGLE_EXT("Amp Spk 3D Playback Switch", LM4857_LVOL, 5, 1, 0,
 489                 lm4857_get_reg, lm4857_set_reg),
 490         SOC_SINGLE_EXT("Amp HP 3d Playback Switch", LM4857_RVOL, 5, 1, 0,
 491                 lm4857_get_reg, lm4857_set_reg),
 492         SOC_SINGLE_EXT("Amp Fast Wakeup Playback Switch", LM4857_CTRL, 5, 1, 0,
 493                 lm4857_get_reg, lm4857_set_reg),
 494         SOC_SINGLE_EXT("Amp Earpiece 6dB Playback Switch", LM4857_CTRL, 4, 1, 0,
 495                 lm4857_get_reg, lm4857_set_reg),
 496 };
 497
 498 /*
 499  * This is an example machine initialisation for a wm8753 connected to a
 500  * neo1973 II. It is missing logic to detect hp/mic insertions and logic
 501  * to re-route the audio in such an event.
 502  */
 503 static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd)
 504 {
 505         struct snd_soc_codec *codec = rtd->codec;
 506         struct snd_soc_dapm_context *dapm = &codec->dapm;
 507         int err;
 508
 509         pr_debug("Entered %s\n", __func__);
 510
 511         /* set up NC codec pins */
 512         snd_soc_dapm_nc_pin(dapm, "LOUT2");
 513         snd_soc_dapm_nc_pin(dapm, "ROUT2");
 514         snd_soc_dapm_nc_pin(dapm, "OUT3");
 515         snd_soc_dapm_nc_pin(dapm, "OUT4");
 516         snd_soc_dapm_nc_pin(dapm, "LINE1");
 517         snd_soc_dapm_nc_pin(dapm, "LINE2");
 518
 519         /* Add neo1973 specific widgets */
 520         snd_soc_dapm_new_controls(dapm, wm8753_dapm_widgets,
 521                                   ARRAY_SIZE(wm8753_dapm_widgets));
 522
 523         /* set endpoints to default mode */
 524         set_scenario_endpoints(codec, NEO_AUDIO_OFF);
 525
 526         /* add neo1973 specific controls */
 527         err = snd_soc_add_controls(codec, wm8753_neo1973_controls,
 528                                 ARRAY_SIZE(8753_neo1973_controls));
 529         if (err < 0)
 530                 return err;
 531
 532         /* set up neo1973 specific audio routes */
 533         err = snd_soc_dapm_add_routes(dapm, dapm_routes,
 534                                       ARRAY_SIZE(dapm_routes));
 535
 536         snd_soc_dapm_sync(dapm);
 537         return 0;
 538 }
 539
 540 /*
 541  * BT Codec DAI
 542  */
 543 static struct snd_soc_dai bt_dai = {
 544         .name = "bluetooth-dai",
 545         .playback = {
 546                 .channels_min = 1,
 547                 .channels_max = 1,
 548                 .rates = SNDRV_PCM_RATE_8000,
 549                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 550         .capture = {
 551                 .channels_min = 1,
 552                 .channels_max = 1,
 553                 .rates = SNDRV_PCM_RATE_8000,
 554                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 555 };
 556
 557 static struct snd_soc_dai_link neo1973_dai[] = {
 558 { /* Hifi Playback - for similatious use with voice below */
 559         .name = "WM8753",
 560         .stream_name = "WM8753 HiFi",
 561         .platform_name = "samsung-audio",
 562         .cpu_dai_name = "s3c24xx-iis",
 563         .codec_dai_name = "wm8753-hifi",
 564         .codec_name = "wm8753-codec.0-001a",
 565         .init = neo1973_wm8753_init,
 566         .ops = &neo1973_hifi_ops,
 567 },
 568 { /* Voice via BT */
 569         .name = "Bluetooth",
 570         .stream_name = "Voice",
 571         .platform_name = "samsung-audio",
 572         .cpu_dai_name = "bluetooth-dai",
 573         .codec_dai_name = "wm8753-voice",
 574         .codec_name = "wm8753-codec.0-001a",
 575         .ops = &neo1973_voice_ops,
 576 },
 577 };
 578
 579 static struct snd_soc_card neo1973 = {
 580         .name = "neo1973",
 581         .dai_link = neo1973_dai,
 582         .num_links = ARRAY_SIZE(neo1973_dai),
 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);
 677         ret = platform_device_add(neo1973_snd_device);
 678
 679         if (ret) {
 680                 platform_device_put(neo1973_snd_device);
 681                 return ret;
 682         }
 683
 684         ret = i2c_add_driver(&lm4857_i2c_driver);
 685
 686         if (ret != 0)
 687                 platform_device_unregister(neo1973_snd_device);
 688
 689         return ret;
 690 }
 691
 692 static void __exit neo1973_exit(void)
 693 {
 694         pr_debug("Entered %s\n", __func__);
 695
 696         i2c_del_driver(&lm4857_i2c_driver);
 697         platform_device_unregister(neo1973_snd_device);
 698 }
 699
 700 module_init(neo1973_init);
 701 module_exit(neo1973_exit);
 702
 703 /* Module information */
 704 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
 705 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973");
 706 MODULE_LICENSE("GPL");