sound/soc/codecs/ssm2602.c

   1 /*
   2  * File:         sound/soc/codecs/ssm2602.c
   3  * Author:       Cliff Cai <Cliff.Cai@analog.com>
   4  *
   5  * Created:      Tue June 06 2008
   6  * Description:  Driver for ssm2602 sound chip
   7  *
   8  * Modified:
   9  *               Copyright 2008 Analog Devices Inc.
  10  *
  11  * Bugs:         Enter bugs at http://blackfin.uclinux.org/
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, see the file COPYING, or write
  25  * to the Free Software Foundation, Inc.,
  26  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  27  */
  28
  29 #include <linux/module.h>
  30 #include <linux/moduleparam.h>
  31 #include <linux/init.h>
  32 #include <linux/delay.h>
  33 #include <linux/pm.h>
  34 #include <linux/i2c.h>
  35 #include <linux/spi/spi.h>
  36 #include <linux/platform_device.h>
  37 #include <linux/slab.h>
  38 #include <sound/core.h>
  39 #include <sound/pcm.h>
  40 #include <sound/pcm_params.h>
  41 #include <sound/soc.h>
  42 #include <sound/initval.h>
  43
  44 #include "ssm2602.h"
  45
  46 #define SSM2602_VERSION "0.1"
  47
  48 enum ssm2602_type {
  49         SSM2602,
  50         SSM2604,
  51 };
  52
  53 /* codec private data */
  54 struct ssm2602_priv {
  55         unsigned int sysclk;
  56         enum snd_soc_control_type control_type;
  57         struct snd_pcm_substream *master_substream;
  58         struct snd_pcm_substream *slave_substream;
  59
  60         enum ssm2602_type type;
  61 };
  62
  63 /*
  64  * ssm2602 register cache
  65  * We can't read the ssm2602 register space when we are
  66  * using 2 wire for device control, so we cache them instead.
  67  * There is no point in caching the reset register
  68  */
  69 static const u16 ssm2602_reg[SSM2602_CACHEREGNUM] = {
  70         0x0097, 0x0097, 0x0079, 0x0079,
  71         0x000a, 0x0008, 0x009f, 0x000a,
  72         0x0000, 0x0000
  73 };
  74
  75 #define ssm2602_reset(c)        snd_soc_write(c, SSM2602_RESET, 0)
  76
  77 /*Appending several "None"s just for OSS mixer use*/
  78 static const char *ssm2602_input_select[] = {
  79         "Line", "Mic", "None", "None", "None",
  80         "None", "None", "None",
  81 };
  82
  83 static const char *ssm2602_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
  84
  85 static const struct soc_enum ssm2602_enum[] = {
  86         SOC_ENUM_SINGLE(SSM2602_APANA, 2, 2, ssm2602_input_select),
  87         SOC_ENUM_SINGLE(SSM2602_APDIGI, 1, 4, ssm2602_deemph),
  88 };
  89
  90 static const struct snd_kcontrol_new ssm260x_snd_controls[] = {
  91 SOC_DOUBLE_R("Capture Volume", SSM2602_LINVOL, SSM2602_RINVOL, 0, 31, 0),
  92 SOC_DOUBLE_R("Capture Switch", SSM2602_LINVOL, SSM2602_RINVOL, 7, 1, 1),
  93
  94 SOC_SINGLE("ADC High Pass Filter Switch", SSM2602_APDIGI, 0, 1, 1),
  95 SOC_SINGLE("Store DC Offset Switch", SSM2602_APDIGI, 4, 1, 0),
  96
  97 SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]),
  98 };
  99
 100 static const struct snd_kcontrol_new ssm2602_snd_controls[] = {
 101 SOC_DOUBLE_R("Master Playback Volume", SSM2602_LOUT1V, SSM2602_ROUT1V,
 102         0, 127, 0),
 103 SOC_DOUBLE_R("Master Playback ZC Switch", SSM2602_LOUT1V, SSM2602_ROUT1V,
 104         7, 1, 0),
 105
 106 SOC_SINGLE("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1),
 107
 108 SOC_SINGLE("Mic Boost (+20dB)", SSM2602_APANA, 0, 1, 0),
 109 SOC_SINGLE("Mic Boost2 (+20dB)", SSM2602_APANA, 8, 1, 0),
 110 SOC_SINGLE("Mic Switch", SSM2602_APANA, 1, 1, 1),
 111 };
 112
 113 /* Output Mixer */
 114 static const struct snd_kcontrol_new ssm260x_output_mixer_controls[] = {
 115 SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0),
 116 SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0),
 117 SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0),
 118 };
 119
 120 /* Input mux */
 121 static const struct snd_kcontrol_new ssm2602_input_mux_controls =
 122 SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]);
 123
 124 static const struct snd_soc_dapm_widget ssm260x_dapm_widgets[] = {
 125 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1),
 126 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1),
 127 SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0),
 128
 129 SND_SOC_DAPM_OUTPUT("LOUT"),
 130 SND_SOC_DAPM_OUTPUT("ROUT"),
 131 SND_SOC_DAPM_INPUT("RLINEIN"),
 132 SND_SOC_DAPM_INPUT("LLINEIN"),
 133 };
 134
 135 static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = {
 136 SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1,
 137         ssm260x_output_mixer_controls,
 138         ARRAY_SIZE(ssm260x_output_mixer_controls)),
 139
 140 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls),
 141 SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1),
 142
 143 SND_SOC_DAPM_OUTPUT("LHPOUT"),
 144 SND_SOC_DAPM_OUTPUT("RHPOUT"),
 145 SND_SOC_DAPM_INPUT("MICIN"),
 146 };
 147
 148 static const struct snd_soc_dapm_widget ssm2604_dapm_widgets[] = {
 149 SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
 150         ssm260x_output_mixer_controls,
 151         ARRAY_SIZE(ssm260x_output_mixer_controls) - 1), /* Last element is the mic */
 152 };
 153
 154 static const struct snd_soc_dapm_route ssm260x_routes[] = {
 155         {"Output Mixer", "Line Bypass Switch", "Line Input"},
 156         {"Output Mixer", "HiFi Playback Switch", "DAC"},
 157
 158         {"ROUT", NULL, "Output Mixer"},
 159         {"LOUT", NULL, "Output Mixer"},
 160
 161         {"Line Input", NULL, "LLINEIN"},
 162         {"Line Input", NULL, "RLINEIN"},
 163 };
 164
 165 static const struct snd_soc_dapm_route ssm2602_routes[] = {
 166         {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
 167
 168         {"RHPOUT", NULL, "Output Mixer"},
 169         {"LHPOUT", NULL, "Output Mixer"},
 170
 171         {"Input Mux", "Line", "Line Input"},
 172         {"Input Mux", "Mic", "Mic Bias"},
 173         {"ADC", NULL, "Input Mux"},
 174
 175         {"Mic Bias", NULL, "MICIN"},
 176 };
 177
 178 static const struct snd_soc_dapm_route ssm2604_routes[] = {
 179         {"ADC", NULL, "Line Input"},
 180 };
 181
 182 struct ssm2602_coeff {
 183         u32 mclk;
 184         u32 rate;
 185         u8 srate;
 186 };
 187
 188 #define SSM2602_COEFF_SRATE(sr, bosr, usb) (((sr) << 2) | ((bosr) << 1) | (usb))
 189
 190 /* codec mclk clock coefficients */
 191 static const struct ssm2602_coeff ssm2602_coeff_table[] = {
 192         /* 48k */
 193         {12288000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x0)},
 194         {18432000, 48000, SSM2602_COEFF_SRATE(0x0, 0x1, 0x0)},
 195         {12000000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x1)},
 196
 197         /* 32k */
 198         {12288000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x0)},
 199         {18432000, 32000, SSM2602_COEFF_SRATE(0x6, 0x1, 0x0)},
 200         {12000000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x1)},
 201
 202         /* 8k */
 203         {12288000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x0)},
 204         {18432000, 8000, SSM2602_COEFF_SRATE(0x3, 0x1, 0x0)},
 205         {11289600, 8000, SSM2602_COEFF_SRATE(0xb, 0x0, 0x0)},
 206         {16934400, 8000, SSM2602_COEFF_SRATE(0xb, 0x1, 0x0)},
 207         {12000000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x1)},
 208
 209         /* 96k */
 210         {12288000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x0)},
 211         {18432000, 96000, SSM2602_COEFF_SRATE(0x7, 0x1, 0x0)},
 212         {12000000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x1)},
 213
 214         /* 44.1k */
 215         {11289600, 44100, SSM2602_COEFF_SRATE(0x8, 0x0, 0x0)},
 216         {16934400, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x0)},
 217         {12000000, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x1)},
 218
 219         /* 88.2k */
 220         {11289600, 88200, SSM2602_COEFF_SRATE(0xf, 0x0, 0x0)},
 221         {16934400, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x0)},
 222         {12000000, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x1)},
 223 };
 224
 225 static inline int ssm2602_get_coeff(int mclk, int rate)
 226 {
 227         int i;
 228
 229         for (i = 0; i < ARRAY_SIZE(ssm2602_coeff_table); i++) {
 230                 if (ssm2602_coeff_table[i].rate == rate &&
 231                         ssm2602_coeff_table[i].mclk == mclk)
 232                         return ssm2602_coeff_table[i].srate;
 233         }
 234         return -EINVAL;
 235 }
 236
 237 static int ssm2602_hw_params(struct snd_pcm_substream *substream,
 238         struct snd_pcm_hw_params *params,
 239         struct snd_soc_dai *dai)
 240 {
 241         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 242         struct snd_soc_codec *codec = rtd->codec;
 243         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 244         u16 iface = snd_soc_read(codec, SSM2602_IFACE) & 0xfff3;
 245         int srate = ssm2602_get_coeff(ssm2602->sysclk, params_rate(params));
 246
 247         if (substream == ssm2602->slave_substream) {
 248                 dev_dbg(codec->dev, "Ignoring hw_params for slave substream\n");
 249                 return 0;
 250         }
 251
 252         if (srate < 0)
 253                 return srate;
 254
 255         snd_soc_write(codec, SSM2602_ACTIVE, 0);
 256         snd_soc_write(codec, SSM2602_SRATE, srate);
 257
 258         /* bit size */
 259         switch (params_format(params)) {
 260         case SNDRV_PCM_FORMAT_S16_LE:
 261                 break;
 262         case SNDRV_PCM_FORMAT_S20_3LE:
 263                 iface |= 0x0004;
 264                 break;
 265         case SNDRV_PCM_FORMAT_S24_LE:
 266                 iface |= 0x0008;
 267                 break;
 268         case SNDRV_PCM_FORMAT_S32_LE:
 269                 iface |= 0x000c;
 270                 break;
 271         }
 272         snd_soc_write(codec, SSM2602_IFACE, iface);
 273         snd_soc_write(codec, SSM2602_ACTIVE, ACTIVE_ACTIVATE_CODEC);
 274         return 0;
 275 }
 276
 277 static int ssm2602_startup(struct snd_pcm_substream *substream,
 278                            struct snd_soc_dai *dai)
 279 {
 280         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 281         struct snd_soc_codec *codec = rtd->codec;
 282         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 283         struct i2c_client *i2c = codec->control_data;
 284         struct snd_pcm_runtime *master_runtime;
 285
 286         /* The DAI has shared clocks so if we already have a playback or
 287          * capture going then constrain this substream to match it.
 288          * TODO: the ssm2602 allows pairs of non-matching PB/REC rates
 289          */
 290         if (ssm2602->master_substream) {
 291                 master_runtime = ssm2602->master_substream->runtime;
 292                 dev_dbg(&i2c->dev, "Constraining to %d bits at %dHz\n",
 293                         master_runtime->sample_bits,
 294                         master_runtime->rate);
 295
 296                 if (master_runtime->rate != 0)
 297                         snd_pcm_hw_constraint_minmax(substream->runtime,
 298                                                      SNDRV_PCM_HW_PARAM_RATE,
 299                                                      master_runtime->rate,
 300                                                      master_runtime->rate);
 301
 302                 if (master_runtime->sample_bits != 0)
 303                         snd_pcm_hw_constraint_minmax(substream->runtime,
 304                                                      SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
 305                                                      master_runtime->sample_bits,
 306                                                      master_runtime->sample_bits);
 307
 308                 ssm2602->slave_substream = substream;
 309         } else
 310                 ssm2602->master_substream = substream;
 311
 312         return 0;
 313 }
 314
 315 static int ssm2602_pcm_prepare(struct snd_pcm_substream *substream,
 316                                struct snd_soc_dai *dai)
 317 {
 318         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 319         struct snd_soc_codec *codec = rtd->codec;
 320         /* set active */
 321         snd_soc_write(codec, SSM2602_ACTIVE, ACTIVE_ACTIVATE_CODEC);
 322
 323         return 0;
 324 }
 325
 326 static void ssm2602_shutdown(struct snd_pcm_substream *substream,
 327                              struct snd_soc_dai *dai)
 328 {
 329         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 330         struct snd_soc_codec *codec = rtd->codec;
 331         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 332
 333         /* deactivate */
 334         if (!codec->active)
 335                 snd_soc_write(codec, SSM2602_ACTIVE, 0);
 336
 337         if (ssm2602->master_substream == substream)
 338                 ssm2602->master_substream = ssm2602->slave_substream;
 339
 340         ssm2602->slave_substream = NULL;
 341 }
 342
 343 static int ssm2602_mute(struct snd_soc_dai *dai, int mute)
 344 {
 345         struct snd_soc_codec *codec = dai->codec;
 346         u16 mute_reg = snd_soc_read(codec, SSM2602_APDIGI) & ~APDIGI_ENABLE_DAC_MUTE;
 347         if (mute)
 348                 snd_soc_write(codec, SSM2602_APDIGI,
 349                                 mute_reg | APDIGI_ENABLE_DAC_MUTE);
 350         else
 351                 snd_soc_write(codec, SSM2602_APDIGI, mute_reg);
 352         return 0;
 353 }
 354
 355 static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 356                 int clk_id, unsigned int freq, int dir)
 357 {
 358         struct snd_soc_codec *codec = codec_dai->codec;
 359         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 360         switch (freq) {
 361         case 11289600:
 362         case 12000000:
 363         case 12288000:
 364         case 16934400:
 365         case 18432000:
 366                 ssm2602->sysclk = freq;
 367                 return 0;
 368         }
 369         return -EINVAL;
 370 }
 371
 372 static int ssm2602_set_dai_fmt(struct snd_soc_dai *codec_dai,
 373                 unsigned int fmt)
 374 {
 375         struct snd_soc_codec *codec = codec_dai->codec;
 376         u16 iface = 0;
 377
 378         /* set master/slave audio interface */
 379         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 380         case SND_SOC_DAIFMT_CBM_CFM:
 381                 iface |= 0x0040;
 382                 break;
 383         case SND_SOC_DAIFMT_CBS_CFS:
 384                 break;
 385         default:
 386                 return -EINVAL;
 387         }
 388
 389         /* interface format */
 390         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 391         case SND_SOC_DAIFMT_I2S:
 392                 iface |= 0x0002;
 393                 break;
 394         case SND_SOC_DAIFMT_RIGHT_J:
 395                 break;
 396         case SND_SOC_DAIFMT_LEFT_J:
 397                 iface |= 0x0001;
 398                 break;
 399         case SND_SOC_DAIFMT_DSP_A:
 400                 iface |= 0x0013;
 401                 break;
 402         case SND_SOC_DAIFMT_DSP_B:
 403                 iface |= 0x0003;
 404                 break;
 405         default:
 406                 return -EINVAL;
 407         }
 408
 409         /* clock inversion */
 410         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 411         case SND_SOC_DAIFMT_NB_NF:
 412                 break;
 413         case SND_SOC_DAIFMT_IB_IF:
 414                 iface |= 0x0090;
 415                 break;
 416         case SND_SOC_DAIFMT_IB_NF:
 417                 iface |= 0x0080;
 418                 break;
 419         case SND_SOC_DAIFMT_NB_IF:
 420                 iface |= 0x0010;
 421                 break;
 422         default:
 423                 return -EINVAL;
 424         }
 425
 426         /* set iface */
 427         snd_soc_write(codec, SSM2602_IFACE, iface);
 428         return 0;
 429 }
 430
 431 static int ssm2602_set_bias_level(struct snd_soc_codec *codec,
 432                                  enum snd_soc_bias_level level)
 433 {
 434         u16 reg = snd_soc_read(codec, SSM2602_PWR) & 0xff7f;
 435
 436         switch (level) {
 437         case SND_SOC_BIAS_ON:
 438                 /* vref/mid, osc on, dac unmute */
 439                 snd_soc_write(codec, SSM2602_PWR, reg);
 440                 break;
 441         case SND_SOC_BIAS_PREPARE:
 442                 break;
 443         case SND_SOC_BIAS_STANDBY:
 444                 /* everything off except vref/vmid, */
 445                 snd_soc_write(codec, SSM2602_PWR, reg | PWR_CLK_OUT_PDN);
 446                 break;
 447         case SND_SOC_BIAS_OFF:
 448                 /* everything off, dac mute, inactive */
 449                 snd_soc_write(codec, SSM2602_ACTIVE, 0);
 450                 snd_soc_write(codec, SSM2602_PWR, 0xffff);
 451                 break;
 452
 453         }
 454         codec->dapm.bias_level = level;
 455         return 0;
 456 }
 457
 458 #define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_32000 |\
 459                 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
 460                 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
 461
 462 #define SSM2602_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 463                 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 464
 465 static struct snd_soc_dai_ops ssm2602_dai_ops = {
 466         .startup        = ssm2602_startup,
 467         .prepare        = ssm2602_pcm_prepare,
 468         .hw_params      = ssm2602_hw_params,
 469         .shutdown       = ssm2602_shutdown,
 470         .digital_mute   = ssm2602_mute,
 471         .set_sysclk     = ssm2602_set_dai_sysclk,
 472         .set_fmt        = ssm2602_set_dai_fmt,
 473 };
 474
 475 static struct snd_soc_dai_driver ssm2602_dai = {
 476         .name = "ssm2602-hifi",
 477         .playback = {
 478                 .stream_name = "Playback",
 479                 .channels_min = 2,
 480                 .channels_max = 2,
 481                 .rates = SSM2602_RATES,
 482                 .formats = SSM2602_FORMATS,},
 483         .capture = {
 484                 .stream_name = "Capture",
 485                 .channels_min = 2,
 486                 .channels_max = 2,
 487                 .rates = SSM2602_RATES,
 488                 .formats = SSM2602_FORMATS,},
 489         .ops = &ssm2602_dai_ops,
 490 };
 491
 492 static int ssm2602_suspend(struct snd_soc_codec *codec, pm_message_t state)
 493 {
 494         ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
 495         return 0;
 496 }
 497
 498 static int ssm2602_resume(struct snd_soc_codec *codec)
 499 {
 500         snd_soc_cache_sync(codec);
 501
 502         ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 503
 504         return 0;
 505 }
 506
 507 static int ssm2602_probe(struct snd_soc_codec *codec)
 508 {
 509         struct snd_soc_dapm_context *dapm = &codec->dapm;
 510         int ret, reg;
 511
 512         reg = snd_soc_read(codec, SSM2602_LOUT1V);
 513         snd_soc_write(codec, SSM2602_LOUT1V, reg | LOUT1V_LRHP_BOTH);
 514         reg = snd_soc_read(codec, SSM2602_ROUT1V);
 515         snd_soc_write(codec, SSM2602_ROUT1V, reg | ROUT1V_RLHP_BOTH);
 516
 517         ret = snd_soc_add_controls(codec, ssm2602_snd_controls,
 518                         ARRAY_SIZE(ssm2602_snd_controls));
 519         if (ret)
 520                 return ret;
 521
 522         ret = snd_soc_dapm_new_controls(dapm, ssm2602_dapm_widgets,
 523                         ARRAY_SIZE(ssm2602_dapm_widgets));
 524         if (ret)
 525                 return ret;
 526
 527         return snd_soc_dapm_add_routes(dapm, ssm2602_routes,
 528                         ARRAY_SIZE(ssm2602_routes));
 529 }
 530
 531 static int ssm2604_probe(struct snd_soc_codec *codec)
 532 {
 533         struct snd_soc_dapm_context *dapm = &codec->dapm;
 534         int ret;
 535
 536         ret = snd_soc_dapm_new_controls(dapm, ssm2604_dapm_widgets,
 537                         ARRAY_SIZE(ssm2604_dapm_widgets));
 538         if (ret)
 539                 return ret;
 540
 541         return snd_soc_dapm_add_routes(dapm, ssm2604_routes,
 542                         ARRAY_SIZE(ssm2604_routes));
 543 }
 544
 545 static int ssm260x_probe(struct snd_soc_codec *codec)
 546 {
 547         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 548         int ret, reg;
 549
 550         pr_info("ssm2602 Audio Codec %s", SSM2602_VERSION);
 551
 552         ret = snd_soc_codec_set_cache_io(codec, 7, 9, ssm2602->control_type);
 553         if (ret < 0) {
 554                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 555                 return ret;
 556         }
 557
 558         ret = ssm2602_reset(codec);
 559         if (ret < 0) {
 560                 dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
 561                 return ret;
 562         }
 563
 564         /* set the update bits */
 565         reg = snd_soc_read(codec, SSM2602_LINVOL);
 566         snd_soc_write(codec, SSM2602_LINVOL, reg | LINVOL_LRIN_BOTH);
 567         reg = snd_soc_read(codec, SSM2602_RINVOL);
 568         snd_soc_write(codec, SSM2602_RINVOL, reg | RINVOL_RLIN_BOTH);
 569         /*select Line in as default input*/
 570         snd_soc_write(codec, SSM2602_APANA, APANA_SELECT_DAC |
 571                         APANA_ENABLE_MIC_BOOST);
 572
 573         switch (ssm2602->type) {
 574         case SSM2602:
 575                 ret = ssm2602_probe(codec);
 576                 break;
 577         case SSM2604:
 578                 ret = ssm2604_probe(codec);
 579                 break;
 580         }
 581
 582         return ret;
 583 }
 584
 585 /* remove everything here */
 586 static int ssm2602_remove(struct snd_soc_codec *codec)
 587 {
 588         ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
 589         return 0;
 590 }
 591
 592 static struct snd_soc_codec_driver soc_codec_dev_ssm2602 = {
 593         .probe =        ssm260x_probe,
 594         .remove =       ssm2602_remove,
 595         .suspend =      ssm2602_suspend,
 596         .resume =       ssm2602_resume,
 597         .set_bias_level = ssm2602_set_bias_level,
 598         .reg_cache_size = ARRAY_SIZE(ssm2602_reg),
 599         .reg_word_size = sizeof(u16),
 600         .reg_cache_default = ssm2602_reg,
 601
 602         .controls = ssm260x_snd_controls,
 603         .num_controls = ARRAY_SIZE(ssm260x_snd_controls),
 604         .dapm_widgets = ssm260x_dapm_widgets,
 605         .num_dapm_widgets = ARRAY_SIZE(ssm260x_dapm_widgets),
 606         .dapm_routes = ssm260x_routes,
 607         .num_dapm_routes = ARRAY_SIZE(ssm260x_routes),
 608 };
 609
 610 #if defined(CONFIG_SPI_MASTER)
 611 static int __devinit ssm2602_spi_probe(struct spi_device *spi)
 612 {
 613         struct ssm2602_priv *ssm2602;
 614         int ret;
 615
 616         ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL);
 617         if (ssm2602 == NULL)
 618                 return -ENOMEM;
 619
 620         spi_set_drvdata(spi, ssm2602);
 621         ssm2602->control_type = SND_SOC_SPI;
 622         ssm2602->type = SSM2602;
 623
 624         ret = snd_soc_register_codec(&spi->dev,
 625                         &soc_codec_dev_ssm2602, &ssm2602_dai, 1);
 626         if (ret < 0)
 627                 kfree(ssm2602);
 628         return ret;
 629 }
 630
 631 static int __devexit ssm2602_spi_remove(struct spi_device *spi)
 632 {
 633         snd_soc_unregister_codec(&spi->dev);
 634         kfree(spi_get_drvdata(spi));
 635         return 0;
 636 }
 637
 638 static struct spi_driver ssm2602_spi_driver = {
 639         .driver = {
 640                 .name   = "ssm2602",
 641                 .owner  = THIS_MODULE,
 642         },
 643         .probe          = ssm2602_spi_probe,
 644         .remove         = __devexit_p(ssm2602_spi_remove),
 645 };
 646 #endif
 647
 648 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 649 /*
 650  * ssm2602 2 wire address is determined by GPIO5
 651  * state during powerup.
 652  *    low  = 0x1a
 653  *    high = 0x1b
 654  */
 655 static int __devinit ssm2602_i2c_probe(struct i2c_client *i2c,
 656                              const struct i2c_device_id *id)
 657 {
 658         struct ssm2602_priv *ssm2602;
 659         int ret;
 660
 661         ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL);
 662         if (ssm2602 == NULL)
 663                 return -ENOMEM;
 664
 665         i2c_set_clientdata(i2c, ssm2602);
 666         ssm2602->control_type = SND_SOC_I2C;
 667         ssm2602->type = id->driver_data;
 668
 669         ret = snd_soc_register_codec(&i2c->dev,
 670                         &soc_codec_dev_ssm2602, &ssm2602_dai, 1);
 671         if (ret < 0)
 672                 kfree(ssm2602);
 673         return ret;
 674 }
 675
 676 static int __devexit ssm2602_i2c_remove(struct i2c_client *client)
 677 {
 678         snd_soc_unregister_codec(&client->dev);
 679         kfree(i2c_get_clientdata(client));
 680         return 0;
 681 }
 682
 683 static const struct i2c_device_id ssm2602_i2c_id[] = {
 684         { "ssm2602", SSM2602 },
 685         { "ssm2603", SSM2602 },
 686         { "ssm2604", SSM2604 },
 687         { }
 688 };
 689 MODULE_DEVICE_TABLE(i2c, ssm2602_i2c_id);
 690
 691 /* corgi i2c codec control layer */
 692 static struct i2c_driver ssm2602_i2c_driver = {
 693         .driver = {
 694                 .name = "ssm2602",
 695                 .owner = THIS_MODULE,
 696         },
 697         .probe = ssm2602_i2c_probe,
 698         .remove = __devexit_p(ssm2602_i2c_remove),
 699         .id_table = ssm2602_i2c_id,
 700 };
 701 #endif
 702
 703
 704 static int __init ssm2602_modinit(void)
 705 {
 706         int ret = 0;
 707
 708 #if defined(CONFIG_SPI_MASTER)
 709         ret = spi_register_driver(&ssm2602_spi_driver);
 710         if (ret)
 711                 return ret;
 712 #endif
 713
 714 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 715         ret = i2c_add_driver(&ssm2602_i2c_driver);
 716         if (ret)
 717                 return ret;
 718 #endif
 719
 720         return ret;
 721 }
 722 module_init(ssm2602_modinit);
 723
 724 static void __exit ssm2602_exit(void)
 725 {
 726 #if defined(CONFIG_SPI_MASTER)
 727         spi_unregister_driver(&ssm2602_spi_driver);
 728 #endif
 729
 730 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 731         i2c_del_driver(&ssm2602_i2c_driver);
 732 #endif
 733 }
 734 module_exit(ssm2602_exit);
 735
 736 MODULE_DESCRIPTION("ASoC SSM2602/SSM2603/SSM2604 driver");
 737 MODULE_AUTHOR("Cliff Cai");
 738 MODULE_LICENSE("GPL");