target/linux/s3c24xx/patches-2.6.26/1030-gta02-sound.patch.patch

   1 From c03e9f46b9f15afc3e8980ae28666ff30907b173 Mon Sep 17 00:00:00 2001
   2 From: mokopatches <mokopatches@openmoko.org>
   3 Date: Wed, 16 Jul 2008 14:46:56 +0100
   4 Subject: [PATCH] gta02-sound.patch
   5
   6 ---
   7  include/sound/soc-dapm.h                 |    7 +
   8  sound/soc/s3c24xx/Kconfig                |    9 +
   9  sound/soc/s3c24xx/Makefile               |    3 +
  10  sound/soc/s3c24xx/neo1973_gta02_wm8753.c |  667 ++++++++++++++++++++++++++++++
  11  sound/soc/soc-dapm.c                     |   24 ++
  12  5 files changed, 710 insertions(+), 0 deletions(-)
  13  create mode 100644 sound/soc/s3c24xx/neo1973_gta02_wm8753.c
  14
  15 diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
  16 index a105b01..e867447 100644
  17 --- a/include/sound/soc-dapm.h
  18 +++ b/include/sound/soc-dapm.h
  19 @@ -225,6 +225,13 @@ int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec,
  20         char *pin, int status);
  21  int snd_soc_dapm_sync_endpoints(struct snd_soc_codec *codec);
  22
  23 +/* dapm audio endpoint control */
  24 +int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec,
  25 +       char *pin, int status);
  26 +int snd_soc_dapm_get_endpoint(struct snd_soc_codec *codec,
  27 +       char *pin);
  28 +int snd_soc_dapm_sync_endpoints(struct snd_soc_codec *codec);
  29 +
  30  /* dapm widget types */
  31  enum snd_soc_dapm_type {
  32         snd_soc_dapm_input = 0,         /* input pin */
  33 diff --git a/sound/soc/s3c24xx/Kconfig b/sound/soc/s3c24xx/Kconfig
  34 index 1f6dbfc..3155c43 100644
  35 --- a/sound/soc/s3c24xx/Kconfig
  36 +++ b/sound/soc/s3c24xx/Kconfig
  37 @@ -28,6 +28,15 @@ config SND_S3C24XX_SOC_NEO1973_WM8753
  38           Say Y if you want to add support for SoC audio on smdk2440
  39           with the WM8753.
  40
  41 +config SND_S3C24XX_SOC_NEO1973_GTA02_WM8753
  42 +       tristate "SoC I2S Audio support for NEO1973 GTA02 - WM8753"
  43 +       depends on SND_S3C24XX_SOC && MACH_NEO1973_GTA02
  44 +       select SND_S3C24XX_SOC_I2S
  45 +       select SND_SOC_WM8753
  46 +       help
  47 +         Say Y if you want to add support for SoC audio on neo1973 gta02
  48 +         with the WM8753 codec
  49 +
  50  config SND_S3C24XX_SOC_SMDK2443_WM9710
  51         tristate "SoC AC97 Audio support for SMDK2443 - WM9710"
  52         depends on SND_S3C24XX_SOC && MACH_SMDK2443
  53 diff --git a/sound/soc/s3c24xx/Makefile b/sound/soc/s3c24xx/Makefile
  54 index 0aa5fb0..f154cb1 100644
  55 --- a/sound/soc/s3c24xx/Makefile
  56 +++ b/sound/soc/s3c24xx/Makefile
  57 @@ -13,7 +13,10 @@ obj-$(CONFIG_SND_S3C2412_SOC_I2S) += snd-soc-s3c2412-i2s.o
  58  snd-soc-neo1973-wm8753-objs := neo1973_wm8753.o
  59  snd-soc-smdk2443-wm9710-objs := smdk2443_wm9710.o
  60  snd-soc-ln2440sbc-alc650-objs := ln2440sbc_alc650.o
  61 +snd-soc-neo1973-gta02-wm8753-objs := neo1973_gta02_wm8753.o
  62
  63  obj-$(CONFIG_SND_S3C24XX_SOC_NEO1973_WM8753) += snd-soc-neo1973-wm8753.o
  64  obj-$(CONFIG_SND_S3C24XX_SOC_SMDK2443_WM9710) += snd-soc-smdk2443-wm9710.o
  65  obj-$(CONFIG_SND_S3C24XX_SOC_LN2440SBC_ALC650) += snd-soc-ln2440sbc-alc650.o
  66 +obj-$(CONFIG_SND_S3C24XX_SOC_NEO1973_GTA02_WM8753) += snd-soc-neo1973-gta02-wm8753.o
  67 +
  68 diff --git a/sound/soc/s3c24xx/neo1973_gta02_wm8753.c b/sound/soc/s3c24xx/neo1973_gta02_wm8753.c
  69 new file mode 100644
  70 index 0000000..f32cba3
  71 --- /dev/null
  72 +++ b/sound/soc/s3c24xx/neo1973_gta02_wm8753.c
  73 @@ -0,0 +1,667 @@
  74 +/*
  75 + * neo1973_gta02_wm8753.c  --  SoC audio for Neo1973
  76 + *
  77 + * Copyright 2007 OpenMoko Inc
  78 + * Author: Graeme Gregory <graeme@openmoko.org>
  79 + * Copyright 2007 Wolfson Microelectronics PLC.
  80 + * Author: Graeme Gregory <linux@wolfsonmicro.com>
  81 + *
  82 + *  This program is free software; you can redistribute  it and/or modify it
  83 + *  under  the terms of  the GNU General  Public License as published by the
  84 + *  Free Software Foundation;  either version 2 of the  License, or (at your
  85 + *  option) any later version.
  86 + *
  87 + *  Revision history
  88 + *    06th Nov 2007   Changed from GTA01 to GTA02
  89 + *    20th Jan 2007   Initial version.
  90 + *    05th Feb 2007   Rename all to Neo1973
  91 + *
  92 + */
  93 +
  94 +#include <linux/module.h>
  95 +#include <linux/moduleparam.h>
  96 +#include <linux/timer.h>
  97 +#include <linux/interrupt.h>
  98 +#include <linux/platform_device.h>
  99 +#include <linux/i2c.h>
 100 +#include <sound/driver.h>
 101 +#include <sound/core.h>
 102 +#include <sound/pcm.h>
 103 +#include <sound/soc.h>
 104 +#include <sound/soc-dapm.h>
 105 +
 106 +#include <asm/mach-types.h>
 107 +#include <asm/hardware/scoop.h>
 108 +#include <asm/plat-s3c24xx/regs-iis.h>
 109 +#include <asm/arch/regs-clock.h>
 110 +#include <asm/arch/regs-gpio.h>
 111 +#include <asm/hardware.h>
 112 +#include <asm/arch/audio.h>
 113 +#include <asm/io.h>
 114 +#include <asm/arch/spi-gpio.h>
 115 +#include <asm/arch/regs-gpioj.h>
 116 +#include <asm/arch/gta02.h>
 117 +#include "../codecs/wm8753.h"
 118 +#include "s3c24xx-pcm.h"
 119 +#include "s3c24xx-i2s.h"
 120 +
 121 +/* define the scenarios */
 122 +#define NEO_AUDIO_OFF                  0
 123 +#define NEO_GSM_CALL_AUDIO_HANDSET     1
 124 +#define NEO_GSM_CALL_AUDIO_HEADSET     2
 125 +#define NEO_GSM_CALL_AUDIO_BLUETOOTH   3
 126 +#define NEO_STEREO_TO_SPEAKERS         4
 127 +#define NEO_STEREO_TO_HEADPHONES       5
 128 +#define NEO_CAPTURE_HANDSET            6
 129 +#define NEO_CAPTURE_HEADSET            7
 130 +#define NEO_CAPTURE_BLUETOOTH          8
 131 +#define NEO_STEREO_TO_HANDSET_SPK      9
 132 +
 133 +static struct snd_soc_machine neo1973_gta02;
 134 +
 135 +static int neo1973_gta02_hifi_hw_params(struct snd_pcm_substream *substream,
 136 +       struct snd_pcm_hw_params *params)
 137 +{
 138 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 139 +       struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
 140 +       struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
 141 +       unsigned int pll_out = 0, bclk = 0;
 142 +       int ret = 0;
 143 +       unsigned long iis_clkrate;
 144 +
 145 +       iis_clkrate = s3c24xx_i2s_get_clockrate();
 146 +
 147 +       switch (params_rate(params)) {
 148 +       case 8000:
 149 +       case 16000:
 150 +               pll_out = 12288000;
 151 +               break;
 152 +       case 48000:
 153 +               bclk = WM8753_BCLK_DIV_4;
 154 +               pll_out = 12288000;
 155 +               break;
 156 +       case 96000:
 157 +               bclk = WM8753_BCLK_DIV_2;
 158 +               pll_out = 12288000;
 159 +               break;
 160 +       case 11025:
 161 +               bclk = WM8753_BCLK_DIV_16;
 162 +               pll_out = 11289600;
 163 +               break;
 164 +       case 22050:
 165 +               bclk = WM8753_BCLK_DIV_8;
 166 +               pll_out = 11289600;
 167 +               break;
 168 +       case 44100:
 169 +               bclk = WM8753_BCLK_DIV_4;
 170 +               pll_out = 11289600;
 171 +               break;
 172 +       case 88200:
 173 +               bclk = WM8753_BCLK_DIV_2;
 174 +               pll_out = 11289600;
 175 +               break;
 176 +       }
 177 +
 178 +       /* set codec DAI configuration */
 179 +       ret = codec_dai->dai_ops.set_fmt(codec_dai,
 180 +               SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 181 +               SND_SOC_DAIFMT_CBM_CFM);
 182 +       if (ret < 0)
 183 +               return ret;
 184 +
 185 +       /* set cpu DAI configuration */
 186 +       ret = cpu_dai->dai_ops.set_fmt(cpu_dai,
 187 +               SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 188 +               SND_SOC_DAIFMT_CBM_CFM);
 189 +       if (ret < 0)
 190 +               return ret;
 191 +
 192 +       /* set the codec system clock for DAC and ADC */
 193 +       ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8753_MCLK, pll_out,
 194 +               SND_SOC_CLOCK_IN);
 195 +       if (ret < 0)
 196 +               return ret;
 197 +
 198 +       /* set MCLK division for sample rate */
 199 +       ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
 200 +               S3C2410_IISMOD_32FS );
 201 +       if (ret < 0)
 202 +               return ret;
 203 +
 204 +       /* set codec BCLK division for sample rate */
 205 +       ret = codec_dai->dai_ops.set_clkdiv(codec_dai,
 206 +                                       WM8753_BCLKDIV, bclk);
 207 +       if (ret < 0)
 208 +               return ret;
 209 +
 210 +       /* set prescaler division for sample rate */
 211 +       ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
 212 +               S3C24XX_PRESCALE(4,4));
 213 +       if (ret < 0)
 214 +               return ret;
 215 +
 216 +       /* codec PLL input is PCLK/4 */
 217 +       ret = codec_dai->dai_ops.set_pll(codec_dai, WM8753_PLL1,
 218 +               iis_clkrate / 4, pll_out);
 219 +       if (ret < 0)
 220 +               return ret;
 221 +
 222 +       return 0;
 223 +}
 224 +
 225 +static int neo1973_gta02_hifi_hw_free(struct snd_pcm_substream *substream)
 226 +{
 227 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 228 +       struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
 229 +
 230 +       /* disable the PLL */
 231 +       return codec_dai->dai_ops.set_pll(codec_dai, WM8753_PLL1, 0, 0);
 232 +}
 233 +
 234 +/*
 235 + * Neo1973 WM8753 HiFi DAI opserations.
 236 + */
 237 +static struct snd_soc_ops neo1973_gta02_hifi_ops = {
 238 +       .hw_params = neo1973_gta02_hifi_hw_params,
 239 +       .hw_free = neo1973_gta02_hifi_hw_free,
 240 +};
 241 +
 242 +static int neo1973_gta02_voice_hw_params(
 243 +       struct snd_pcm_substream *substream,
 244 +       struct snd_pcm_hw_params *params)
 245 +{
 246 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 247 +       struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
 248 +       unsigned int pcmdiv = 0;
 249 +       int ret = 0;
 250 +       unsigned long iis_clkrate;
 251 +
 252 +       iis_clkrate = s3c24xx_i2s_get_clockrate();
 253 +
 254 +       if (params_rate(params) != 8000)
 255 +               return -EINVAL;
 256 +       if (params_channels(params) != 1)
 257 +               return -EINVAL;
 258 +
 259 +       pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
 260 +
 261 +       /* todo: gg check mode (DSP_B) against CSR datasheet */
 262 +       /* set codec DAI configuration */
 263 +       ret = codec_dai->dai_ops.set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
 264 +               SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 265 +       if (ret < 0)
 266 +               return ret;
 267 +
 268 +       /* set the codec system clock for DAC and ADC */
 269 +       ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8753_PCMCLK,
 270 +               12288000, SND_SOC_CLOCK_IN);
 271 +       if (ret < 0)
 272 +               return ret;
 273 +
 274 +       /* set codec PCM division for sample rate */
 275 +       ret = codec_dai->dai_ops.set_clkdiv(codec_dai, WM8753_PCMDIV,
 276 +                                       pcmdiv);
 277 +       if (ret < 0)
 278 +               return ret;
 279 +
 280 +       /* configue and enable PLL for 12.288MHz output */
 281 +       ret = codec_dai->dai_ops.set_pll(codec_dai, WM8753_PLL2,
 282 +               iis_clkrate / 4, 12288000);
 283 +       if (ret < 0)
 284 +               return ret;
 285 +
 286 +       return 0;
 287 +}
 288 +
 289 +static int neo1973_gta02_voice_hw_free(struct snd_pcm_substream *substream)
 290 +{
 291 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 292 +       struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
 293 +
 294 +       /* disable the PLL */
 295 +       return codec_dai->dai_ops.set_pll(codec_dai, WM8753_PLL2, 0, 0);
 296 +}
 297 +
 298 +static struct snd_soc_ops neo1973_gta02_voice_ops = {
 299 +       .hw_params = neo1973_gta02_voice_hw_params,
 300 +       .hw_free = neo1973_gta02_voice_hw_free,
 301 +};
 302 +
 303 +#define LM4853_AMP 1
 304 +#define LM4853_SPK 2
 305 +
 306 +static u8 lm4853_state=0;
 307 +
 308 +static int lm4853_set_state(struct snd_kcontrol *kcontrol,
 309 +       struct snd_ctl_elem_value *ucontrol)
 310 +{
 311 +       int val = ucontrol->value.integer.value[0];
 312 +
 313 +       if(val) {
 314 +               lm4853_state |= LM4853_AMP;
 315 +               s3c2410_gpio_setpin(GTA02_GPIO_AMP_SHUT,0);
 316 +       } else {
 317 +               lm4853_state &= ~LM4853_AMP;
 318 +               s3c2410_gpio_setpin(GTA02_GPIO_AMP_SHUT,1);
 319 +       }
 320 +
 321 +       return 0;
 322 +}
 323 +
 324 +static int lm4853_get_state(struct snd_kcontrol *kcontrol,
 325 +       struct snd_ctl_elem_value *ucontrol)
 326 +{
 327 +       ucontrol->value.integer.value[0] = lm4853_state & LM4853_AMP;
 328 +
 329 +       return 0;
 330 +}
 331 +
 332 +static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
 333 +       struct snd_ctl_elem_value *ucontrol)
 334 +{
 335 +       int val = ucontrol->value.integer.value[0];
 336 +
 337 +       if(val) {
 338 +               lm4853_state |= LM4853_SPK;
 339 +               s3c2410_gpio_setpin(GTA02_GPIO_HP_IN,0);
 340 +       } else {
 341 +               lm4853_state &= ~LM4853_SPK;
 342 +               s3c2410_gpio_setpin(GTA02_GPIO_HP_IN,1);
 343 +       }
 344 +
 345 +       return 0;
 346 +}
 347 +
 348 +static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
 349 +       struct snd_ctl_elem_value *ucontrol)
 350 +{
 351 +       ucontrol->value.integer.value[0] = (lm4853_state & LM4853_SPK) >> 1;
 352 +
 353 +       return 0;
 354 +}
 355 +
 356 +static int neo1973_gta02_set_stereo_out(struct snd_kcontrol *kcontrol,
 357 +       struct snd_ctl_elem_value *ucontrol)
 358 +{
 359 +       struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 360 +       int val = ucontrol->value.integer.value[0];
 361 +
 362 +       snd_soc_dapm_set_endpoint(codec, "Stereo Out", val);
 363 +
 364 +       snd_soc_dapm_sync_endpoints(codec);
 365 +
 366 +       return 0;
 367 +}
 368 +
 369 +static int neo1973_gta02_get_stereo_out(struct snd_kcontrol *kcontrol,
 370 +       struct snd_ctl_elem_value *ucontrol)
 371 +{
 372 +       struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 373 +
 374 +       ucontrol->value.integer.value[0] =
 375 +               snd_soc_dapm_get_endpoint(codec, "Stereo Out");
 376 +
 377 +       return 0;
 378 +}
 379 +
 380 +
 381 +static int neo1973_gta02_set_gsm_out(struct snd_kcontrol *kcontrol,
 382 +       struct snd_ctl_elem_value *ucontrol)
 383 +{
 384 +       struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 385 +       int val = ucontrol->value.integer.value[0];
 386 +
 387 +       snd_soc_dapm_set_endpoint(codec, "GSM Line Out", val);
 388 +
 389 +       snd_soc_dapm_sync_endpoints(codec);
 390 +
 391 +       return 0;
 392 +}
 393 +
 394 +static int neo1973_gta02_get_gsm_out(struct snd_kcontrol *kcontrol,
 395 +       struct snd_ctl_elem_value *ucontrol)
 396 +{
 397 +       struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 398 +
 399 +       ucontrol->value.integer.value[0] =
 400 +               snd_soc_dapm_get_endpoint(codec, "GSM Line Out");
 401 +
 402 +       return 0;
 403 +}
 404 +
 405 +static int neo1973_gta02_set_gsm_in(struct snd_kcontrol *kcontrol,
 406 +       struct snd_ctl_elem_value *ucontrol)
 407 +{
 408 +       struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 409 +       int val = ucontrol->value.integer.value[0];
 410 +
 411 +       snd_soc_dapm_set_endpoint(codec, "GSM Line In", val);
 412 +
 413 +       snd_soc_dapm_sync_endpoints(codec);
 414 +
 415 +       return 0;
 416 +}
 417 +
 418 +static int neo1973_gta02_get_gsm_in(struct snd_kcontrol *kcontrol,
 419 +       struct snd_ctl_elem_value *ucontrol)
 420 +{
 421 +       struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 422 +
 423 +       ucontrol->value.integer.value[0] =
 424 +               snd_soc_dapm_get_endpoint(codec, "GSM Line In");
 425 +
 426 +       return 0;
 427 +}
 428 +
 429 +static int neo1973_gta02_set_headset_mic(struct snd_kcontrol *kcontrol,
 430 +       struct snd_ctl_elem_value *ucontrol)
 431 +{
 432 +       struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 433 +       int val = ucontrol->value.integer.value[0];
 434 +
 435 +       snd_soc_dapm_set_endpoint(codec, "Headset Mic", val);
 436 +
 437 +       snd_soc_dapm_sync_endpoints(codec);
 438 +
 439 +       return 0;
 440 +}
 441 +
 442 +static int neo1973_gta02_get_headset_mic(struct snd_kcontrol *kcontrol,
 443 +       struct snd_ctl_elem_value *ucontrol)
 444 +{
 445 +       struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 446 +
 447 +       ucontrol->value.integer.value[0] =
 448 +               snd_soc_dapm_get_endpoint(codec, "Headset Mic");
 449 +
 450 +       return 0;
 451 +}
 452 +
 453 +static int neo1973_gta02_set_handset_mic(struct snd_kcontrol *kcontrol,
 454 +       struct snd_ctl_elem_value *ucontrol)
 455 +{
 456 +       struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 457 +       int val = ucontrol->value.integer.value[0];
 458 +
 459 +       snd_soc_dapm_set_endpoint(codec, "Handset Mic", val);
 460 +
 461 +       snd_soc_dapm_sync_endpoints(codec);
 462 +
 463 +       return 0;
 464 +}
 465 +
 466 +static int neo1973_gta02_get_handset_mic(struct snd_kcontrol *kcontrol,
 467 +       struct snd_ctl_elem_value *ucontrol)
 468 +{
 469 +       struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 470 +
 471 +       ucontrol->value.integer.value[0] =
 472 +               snd_soc_dapm_get_endpoint(codec, "Handset Mic");
 473 +
 474 +       return 0;
 475 +}
 476 +
 477 +static int neo1973_gta02_set_handset_spk(struct snd_kcontrol *kcontrol,
 478 +       struct snd_ctl_elem_value *ucontrol)
 479 +{
 480 +       struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 481 +       int val = ucontrol->value.integer.value[0];
 482 +
 483 +       snd_soc_dapm_set_endpoint(codec, "Handset Spk", val);
 484 +
 485 +       snd_soc_dapm_sync_endpoints(codec);
 486 +
 487 +       return 0;
 488 +}
 489 +
 490 +static int neo1973_gta02_get_handset_spk(struct snd_kcontrol *kcontrol,
 491 +       struct snd_ctl_elem_value *ucontrol)
 492 +{
 493 +       struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 494 +
 495 +       ucontrol->value.integer.value[0] =
 496 +               snd_soc_dapm_get_endpoint(codec, "Handset Spk");
 497 +
 498 +       return 0;
 499 +}
 500 +
 501 +static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
 502 +       SND_SOC_DAPM_LINE("Stereo Out", NULL),
 503 +       SND_SOC_DAPM_LINE("GSM Line Out", NULL),
 504 +       SND_SOC_DAPM_LINE("GSM Line In", NULL),
 505 +       SND_SOC_DAPM_MIC("Headset Mic", NULL),
 506 +       SND_SOC_DAPM_MIC("Handset Mic", NULL),
 507 +       SND_SOC_DAPM_SPK("Handset Spk", NULL),
 508 +};
 509 +
 510 +
 511 +/* example machine audio_mapnections */
 512 +static const char* audio_map[][3] = {
 513 +
 514 +       /* Connections to the lm4853 amp */
 515 +       {"Stereo Out", NULL, "LOUT1"},
 516 +       {"Stereo Out", NULL, "ROUT1"},
 517 +
 518 +       /* Connections to the GSM Module */
 519 +       {"GSM Line Out", NULL, "MONO1"},
 520 +       {"GSM Line Out", NULL, "MONO2"},
 521 +       {"RXP", NULL, "GSM Line In"},
 522 +       {"RXN", NULL, "GSM Line In"},
 523 +
 524 +       /* Connections to Headset */
 525 +       {"MIC1", NULL, "Mic Bias"},
 526 +       {"Mic Bias", NULL, "Headset Mic"},
 527 +
 528 +       /* Call Mic */
 529 +       {"MIC2", NULL, "Mic Bias"},
 530 +       {"MIC2N", NULL, "Mic Bias"},
 531 +       {"Mic Bias", NULL, "Handset Mic"},
 532 +
 533 +       /* Call Speaker */
 534 +       {"Handset Spk", NULL, "LOUT2"},
 535 +       {"Handset Spk", NULL, "ROUT2"},
 536 +
 537 +       /* Connect the ALC pins */
 538 +       {"ACIN", NULL, "ACOP"},
 539 +
 540 +       {NULL, NULL, NULL},
 541 +};
 542 +
 543 +static const struct snd_kcontrol_new wm8753_neo1973_gta02_controls[] = {
 544 +       SOC_SINGLE_EXT("DAPM Stereo Out Switch", 0, 0, 1, 0,
 545 +               neo1973_gta02_get_stereo_out,
 546 +               neo1973_gta02_set_stereo_out),
 547 +       SOC_SINGLE_EXT("DAPM GSM Line Out Switch", 1, 0, 1, 0,
 548 +               neo1973_gta02_get_gsm_out,
 549 +               neo1973_gta02_set_gsm_out),
 550 +       SOC_SINGLE_EXT("DAPM GSM Line In Switch", 2, 0, 1, 0,
 551 +               neo1973_gta02_get_gsm_in,
 552 +               neo1973_gta02_set_gsm_in),
 553 +       SOC_SINGLE_EXT("DAPM Headset Mic Switch", 3, 0, 1, 0,
 554 +               neo1973_gta02_get_headset_mic,
 555 +               neo1973_gta02_set_headset_mic),
 556 +       SOC_SINGLE_EXT("DAPM Handset Mic Switch", 4, 0, 1, 0,
 557 +               neo1973_gta02_get_handset_mic,
 558 +               neo1973_gta02_set_handset_mic),
 559 +       SOC_SINGLE_EXT("DAPM Handset Spk Switch", 5, 0, 1, 0,
 560 +               neo1973_gta02_get_handset_spk,
 561 +               neo1973_gta02_set_handset_spk),
 562 +       SOC_SINGLE_EXT("Amp State Switch", 6, 0, 1, 0,
 563 +               lm4853_get_state,
 564 +               lm4853_set_state),
 565 +       SOC_SINGLE_EXT("Amp Spk Switch", 7, 0, 1, 0,
 566 +               lm4853_get_spk,
 567 +               lm4853_set_spk),
 568 +};
 569 +
 570 +/*
 571 + * This is an example machine initialisation for a wm8753 connected to a
 572 + * neo1973 GTA02.
 573 + */
 574 +static int neo1973_gta02_wm8753_init(struct snd_soc_codec *codec)
 575 +{
 576 +       int i, err;
 577 +
 578 +       /* set up NC codec pins */
 579 +       snd_soc_dapm_set_endpoint(codec, "OUT3",  0);
 580 +       snd_soc_dapm_set_endpoint(codec, "OUT4",  0);
 581 +       snd_soc_dapm_set_endpoint(codec, "LINE1", 0);
 582 +       snd_soc_dapm_set_endpoint(codec, "LINE2", 0);
 583 +
 584 +       /* Add neo1973 gta02 specific widgets */
 585 +       for (i = 0; i < ARRAY_SIZE(wm8753_dapm_widgets); i++)
 586 +               snd_soc_dapm_new_control(codec, &wm8753_dapm_widgets[i]);
 587 +
 588 +       /* add neo1973 gta02 specific controls */
 589 +       for (i = 0; i < ARRAY_SIZE(wm8753_neo1973_gta02_controls); i++) {
 590 +               err = snd_ctl_add(codec->card,
 591 +                       snd_soc_cnew(&wm8753_neo1973_gta02_controls[i],
 592 +                       codec, NULL));
 593 +               if (err < 0)
 594 +                       return err;
 595 +       }
 596 +
 597 +       /* set up neo1973 gta02 specific audio path audio_mapnects */
 598 +       for (i = 0; audio_map[i][0] != NULL; i++) {
 599 +               snd_soc_dapm_connect_input(codec, audio_map[i][0],
 600 +                       audio_map[i][1], audio_map[i][2]);
 601 +       }
 602 +
 603 +       /* set endpoints to default off mode */
 604 +       snd_soc_dapm_set_endpoint(codec, "Stereo Out",  0);
 605 +       snd_soc_dapm_set_endpoint(codec, "GSM Line Out",0);
 606 +       snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
 607 +       snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
 608 +       snd_soc_dapm_set_endpoint(codec, "Handset Mic", 0);
 609 +       snd_soc_dapm_set_endpoint(codec, "Handset Spk", 0);
 610 +
 611 +       snd_soc_dapm_sync_endpoints(codec);
 612 +       return 0;
 613 +}
 614 +
 615 +/*
 616 + * BT Codec DAI
 617 + */
 618 +static struct snd_soc_cpu_dai bt_dai =
 619 +{      .name = "Bluetooth",
 620 +       .id = 0,
 621 +       .type = SND_SOC_DAI_PCM,
 622 +       .playback = {
 623 +               .channels_min = 1,
 624 +               .channels_max = 1,
 625 +               .rates = SNDRV_PCM_RATE_8000,
 626 +               .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 627 +       .capture = {
 628 +               .channels_min = 1,
 629 +               .channels_max = 1,
 630 +               .rates = SNDRV_PCM_RATE_8000,
 631 +               .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 632 +};
 633 +
 634 +static struct snd_soc_dai_link neo1973_gta02_dai[] = {
 635 +{ /* Hifi Playback - for similatious use with voice below */
 636 +       .name = "WM8753",
 637 +       .stream_name = "WM8753 HiFi",
 638 +       .cpu_dai = &s3c24xx_i2s_dai,
 639 +       .codec_dai = &wm8753_dai[WM8753_DAI_HIFI],
 640 +       .init = neo1973_gta02_wm8753_init,
 641 +       .ops = &neo1973_gta02_hifi_ops,
 642 +},
 643 +{ /* Voice via BT */
 644 +       .name = "Bluetooth",
 645 +       .stream_name = "Voice",
 646 +       .cpu_dai = &bt_dai,
 647 +       .codec_dai = &wm8753_dai[WM8753_DAI_VOICE],
 648 +       .ops = &neo1973_gta02_voice_ops,
 649 +},
 650 +};
 651 +
 652 +#ifdef CONFIG_PM
 653 +int neo1973_gta02_suspend(struct platform_device *pdev, pm_message_t state)
 654 +{
 655 +       s3c2410_gpio_setpin(GTA02_GPIO_AMP_SHUT, 1);
 656 +
 657 +       return 0;
 658 +}
 659 +
 660 +int neo1973_gta02_resume(struct platform_device *pdev)
 661 +{
 662 +       if(lm4853_state & LM4853_AMP)
 663 +               s3c2410_gpio_setpin(GTA02_GPIO_AMP_SHUT, 0);
 664 +
 665 +       return 0;
 666 +}
 667 +#else
 668 +#define neo1973_gta02_suspend NULL
 669 +#define neo1973_gta02_resume NULL
 670 +#endif
 671 +
 672 +static struct snd_soc_machine neo1973_gta02 = {
 673 +       .name = "neo1973-gta02",
 674 +       .suspend_pre = neo1973_gta02_suspend,
 675 +       .resume_post = neo1973_gta02_resume,
 676 +       .dai_link = neo1973_gta02_dai,
 677 +       .num_links = ARRAY_SIZE(neo1973_gta02_dai),
 678 +};
 679 +
 680 +static struct wm8753_setup_data neo1973_gta02_wm8753_setup = {
 681 +       .i2c_address = 0x1a,
 682 +};
 683 +
 684 +static struct snd_soc_device neo1973_gta02_snd_devdata = {
 685 +       .machine = &neo1973_gta02,
 686 +       .platform = &s3c24xx_soc_platform,
 687 +       .codec_dev = &soc_codec_dev_wm8753,
 688 +       .codec_data = &neo1973_gta02_wm8753_setup,
 689 +};
 690 +
 691 +static struct platform_device *neo1973_gta02_snd_device;
 692 +
 693 +static int __init neo1973_gta02_init(void)
 694 +{
 695 +       int ret;
 696 +
 697 +       if (!machine_is_neo1973_gta02()) {
 698 +               printk(KERN_INFO
 699 +                      "Only GTA02 hardware supported by ASoc driver\n");
 700 +               return -ENODEV;
 701 +       }
 702 +
 703 +       neo1973_gta02_snd_device = platform_device_alloc("soc-audio", -1);
 704 +       if (!neo1973_gta02_snd_device)
 705 +               return -ENOMEM;
 706 +
 707 +       platform_set_drvdata(neo1973_gta02_snd_device,
 708 +                       &neo1973_gta02_snd_devdata);
 709 +       neo1973_gta02_snd_devdata.dev = &neo1973_gta02_snd_device->dev;
 710 +       ret = platform_device_add(neo1973_gta02_snd_device);
 711 +
 712 +       if (ret)
 713 +               platform_device_put(neo1973_gta02_snd_device);
 714 +
 715 +       /* Initialise GPIOs used by amp */
 716 +       s3c2410_gpio_cfgpin(GTA02_GPIO_HP_IN, S3C2410_GPIO_OUTPUT);
 717 +       s3c2410_gpio_cfgpin(GTA02_GPIO_AMP_SHUT, S3C2410_GPIO_OUTPUT);
 718 +
 719 +       /* Amp off by default */
 720 +       s3c2410_gpio_setpin(GTA02_GPIO_AMP_SHUT, 1);
 721 +
 722 +       /* Speaker off by default */
 723 +       s3c2410_gpio_setpin(GTA02_GPIO_HP_IN, 1);
 724 +
 725 +       return ret;
 726 +}
 727 +
 728 +static void __exit neo1973_gta02_exit(void)
 729 +{
 730 +       platform_device_unregister(neo1973_gta02_snd_device);
 731 +}
 732 +
 733 +module_init(neo1973_gta02_init);
 734 +module_exit(neo1973_gta02_exit);
 735 +
 736 +/* Module information */
 737 +MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org");
 738 +MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 GTA02");
 739 +MODULE_LICENSE("GPL");
 740 +
 741 diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
 742 index af3326c..95df1ff 100644
 743 --- a/sound/soc/soc-dapm.c
 744 +++ b/sound/soc/soc-dapm.c
 745 @@ -1343,6 +1343,30 @@ int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec,
 746  EXPORT_SYMBOL_GPL(snd_soc_dapm_set_endpoint);
 747
 748  /**
 749 + * snd_soc_dapm_get_endpoint - get audio endpoint status
 750 + * @codec: audio codec
 751 + * @endpoint: audio signal endpoint (or start point)
 752 + *
 753 + * Get audio endpoint status - connected or disconnected.
 754 + *
 755 + * Returns status
 756 + */
 757 +int snd_soc_dapm_get_endpoint(struct snd_soc_codec *codec,
 758 +       char *endpoint)
 759 +{
 760 +       struct snd_soc_dapm_widget *w;
 761 +
 762 +       list_for_each_entry(w, &codec->dapm_widgets, list) {
 763 +               if (!strcmp(w->name, endpoint)) {
 764 +                       return w->connected;
 765 +               }
 766 +       }
 767 +
 768 +       return 0;
 769 +}
 770 +EXPORT_SYMBOL_GPL(snd_soc_dapm_get_endpoint);
 771 +
 772 +/**
 773   * snd_soc_dapm_free - free dapm resources
 774   * @socdev: SoC device
 775   *
 776 --
 777 1.5.6.3
 778