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 #include <sound/tlv.h>
  44
  45 #include "ssm2602.h"
  46
  47 #define SSM2602_VERSION "0.1"
  48
  49 enum ssm2602_type {
  50         SSM2602,
  51         SSM2604,
  52 };
  53
  54 /* codec private data */
  55 struct ssm2602_priv {
  56         unsigned int sysclk;
  57         enum snd_soc_control_type control_type;
  58         struct snd_pcm_substream *master_substream;
  59         struct snd_pcm_substream *slave_substream;
  60
  61         enum ssm2602_type type;
  62 };
  63
  64 /*
  65  * ssm2602 register cache
  66  * We can't read the ssm2602 register space when we are
  67  * using 2 wire for device control, so we cache them instead.
  68  * There is no point in caching the reset register
  69  */
  70 static const u16 ssm2602_reg[SSM2602_CACHEREGNUM] = {
  71         0x0097, 0x0097, 0x0079, 0x0079,
  72         0x000a, 0x0008, 0x009f, 0x000a,
  73         0x0000, 0x0000
  74 };
  75
  76 #define ssm2602_reset(c)        snd_soc_write(c, SSM2602_RESET, 0)
  77
  78 /*Appending several "None"s just for OSS mixer use*/
  79 static const char *ssm2602_input_select[] = {
  80         "Line", "Mic", "None", "None", "None",
  81         "None", "None", "None",
  82 };
  83
  84 static const char *ssm2602_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
  85
  86 static const struct soc_enum ssm2602_enum[] = {
  87         SOC_ENUM_SINGLE(SSM2602_APANA, 2, 2, ssm2602_input_select),
  88         SOC_ENUM_SINGLE(SSM2602_APDIGI, 1, 4, ssm2602_deemph),
  89 };
  90
  91 static const unsigned int ssm260x_outmix_tlv[] = {
  92         TLV_DB_RANGE_HEAD(2),
  93         0, 47, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
  94         48, 127, TLV_DB_SCALE_ITEM(-7400, 100, 0),
  95 };
  96
  97 static const DECLARE_TLV_DB_SCALE(ssm260x_inpga_tlv, -3450, 150, 0);
  98 static const DECLARE_TLV_DB_SCALE(ssm260x_sidetone_tlv, -1500, 300, 0);
  99
 100 static const struct snd_kcontrol_new ssm260x_snd_controls[] = {
 101 SOC_DOUBLE_R_TLV("Capture Volume", SSM2602_LINVOL, SSM2602_RINVOL, 0, 45, 0,
 102         ssm260x_inpga_tlv),
 103 SOC_DOUBLE_R("Capture Switch", SSM2602_LINVOL, SSM2602_RINVOL, 7, 1, 1),
 104
 105 SOC_SINGLE("ADC High Pass Filter Switch", SSM2602_APDIGI, 0, 1, 1),
 106 SOC_SINGLE("Store DC Offset Switch", SSM2602_APDIGI, 4, 1, 0),
 107
 108 SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]),
 109 };
 110
 111 static const struct snd_kcontrol_new ssm2602_snd_controls[] = {
 112 SOC_DOUBLE_R_TLV("Master Playback Volume", SSM2602_LOUT1V, SSM2602_ROUT1V,
 113         0, 127, 0, ssm260x_outmix_tlv),
 114 SOC_DOUBLE_R("Master Playback ZC Switch", SSM2602_LOUT1V, SSM2602_ROUT1V,
 115         7, 1, 0),
 116 SOC_SINGLE_TLV("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1,
 117         ssm260x_sidetone_tlv),
 118
 119 SOC_SINGLE("Mic Boost (+20dB)", SSM2602_APANA, 0, 1, 0),
 120 SOC_SINGLE("Mic Boost2 (+20dB)", SSM2602_APANA, 8, 1, 0),
 121 SOC_SINGLE("Mic Switch", SSM2602_APANA, 1, 1, 1),
 122 };
 123
 124 /* Output Mixer */
 125 static const struct snd_kcontrol_new ssm260x_output_mixer_controls[] = {
 126 SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0),
 127 SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0),
 128 SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0),
 129 };
 130
 131 /* Input mux */
 132 static const struct snd_kcontrol_new ssm2602_input_mux_controls =
 133 SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]);
 134
 135 static const struct snd_soc_dapm_widget ssm260x_dapm_widgets[] = {
 136 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1),
 137 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1),
 138 SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0),
 139
 140 SND_SOC_DAPM_SUPPLY("Digital Core Power", SSM2602_ACTIVE, 0, 0, NULL, 0),
 141
 142 SND_SOC_DAPM_OUTPUT("LOUT"),
 143 SND_SOC_DAPM_OUTPUT("ROUT"),
 144 SND_SOC_DAPM_INPUT("RLINEIN"),
 145 SND_SOC_DAPM_INPUT("LLINEIN"),
 146 };
 147
 148 static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = {
 149 SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1,
 150         ssm260x_output_mixer_controls,
 151         ARRAY_SIZE(ssm260x_output_mixer_controls)),
 152
 153 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls),
 154 SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1),
 155
 156 SND_SOC_DAPM_OUTPUT("LHPOUT"),
 157 SND_SOC_DAPM_OUTPUT("RHPOUT"),
 158 SND_SOC_DAPM_INPUT("MICIN"),
 159 };
 160
 161 static const struct snd_soc_dapm_widget ssm2604_dapm_widgets[] = {
 162 SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
 163         ssm260x_output_mixer_controls,
 164         ARRAY_SIZE(ssm260x_output_mixer_controls) - 1), /* Last element is the mic */
 165 };
 166
 167 static const struct snd_soc_dapm_route ssm260x_routes[] = {
 168         {"DAC", NULL, "Digital Core Power"},
 169         {"ADC", NULL, "Digital Core Power"},
 170
 171         {"Output Mixer", "Line Bypass Switch", "Line Input"},
 172         {"Output Mixer", "HiFi Playback Switch", "DAC"},
 173
 174         {"ROUT", NULL, "Output Mixer"},
 175         {"LOUT", NULL, "Output Mixer"},
 176
 177         {"Line Input", NULL, "LLINEIN"},
 178         {"Line Input", NULL, "RLINEIN"},
 179 };
 180
 181 static const struct snd_soc_dapm_route ssm2602_routes[] = {
 182         {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
 183
 184         {"RHPOUT", NULL, "Output Mixer"},
 185         {"LHPOUT", NULL, "Output Mixer"},
 186
 187         {"Input Mux", "Line", "Line Input"},
 188         {"Input Mux", "Mic", "Mic Bias"},
 189         {"ADC", NULL, "Input Mux"},
 190
 191         {"Mic Bias", NULL, "MICIN"},
 192 };
 193
 194 static const struct snd_soc_dapm_route ssm2604_routes[] = {
 195         {"ADC", NULL, "Line Input"},
 196 };
 197
 198 struct ssm2602_coeff {
 199         u32 mclk;
 200         u32 rate;
 201         u8 srate;
 202 };
 203
 204 #define SSM2602_COEFF_SRATE(sr, bosr, usb) (((sr) << 2) | ((bosr) << 1) | (usb))
 205
 206 /* codec mclk clock coefficients */
 207 static const struct ssm2602_coeff ssm2602_coeff_table[] = {
 208         /* 48k */
 209         {12288000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x0)},
 210         {18432000, 48000, SSM2602_COEFF_SRATE(0x0, 0x1, 0x0)},
 211         {12000000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x1)},
 212
 213         /* 32k */
 214         {12288000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x0)},
 215         {18432000, 32000, SSM2602_COEFF_SRATE(0x6, 0x1, 0x0)},
 216         {12000000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x1)},
 217
 218         /* 8k */
 219         {12288000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x0)},
 220         {18432000, 8000, SSM2602_COEFF_SRATE(0x3, 0x1, 0x0)},
 221         {11289600, 8000, SSM2602_COEFF_SRATE(0xb, 0x0, 0x0)},
 222         {16934400, 8000, SSM2602_COEFF_SRATE(0xb, 0x1, 0x0)},
 223         {12000000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x1)},
 224
 225         /* 96k */
 226         {12288000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x0)},
 227         {18432000, 96000, SSM2602_COEFF_SRATE(0x7, 0x1, 0x0)},
 228         {12000000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x1)},
 229
 230         /* 44.1k */
 231         {11289600, 44100, SSM2602_COEFF_SRATE(0x8, 0x0, 0x0)},
 232         {16934400, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x0)},
 233         {12000000, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x1)},
 234
 235         /* 88.2k */
 236         {11289600, 88200, SSM2602_COEFF_SRATE(0xf, 0x0, 0x0)},
 237         {16934400, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x0)},
 238         {12000000, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x1)},
 239 };
 240
 241 static inline int ssm2602_get_coeff(int mclk, int rate)
 242 {
 243         int i;
 244
 245         for (i = 0; i < ARRAY_SIZE(ssm2602_coeff_table); i++) {
 246                 if (ssm2602_coeff_table[i].rate == rate &&
 247                         ssm2602_coeff_table[i].mclk == mclk)
 248                         return ssm2602_coeff_table[i].srate;
 249         }
 250         return -EINVAL;
 251 }
 252
 253 static int ssm2602_hw_params(struct snd_pcm_substream *substream,
 254         struct snd_pcm_hw_params *params,
 255         struct snd_soc_dai *dai)
 256 {
 257         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 258         struct snd_soc_codec *codec = rtd->codec;
 259         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 260         u16 iface = snd_soc_read(codec, SSM2602_IFACE) & 0xfff3;
 261         int srate = ssm2602_get_coeff(ssm2602->sysclk, params_rate(params));
 262
 263         if (substream == ssm2602->slave_substream) {
 264                 dev_dbg(codec->dev, "Ignoring hw_params for slave substream\n");
 265                 return 0;
 266         }
 267
 268         if (srate < 0)
 269                 return srate;
 270
 271         snd_soc_write(codec, SSM2602_SRATE, srate);
 272
 273         /* bit size */
 274         switch (params_format(params)) {
 275         case SNDRV_PCM_FORMAT_S16_LE:
 276                 break;
 277         case SNDRV_PCM_FORMAT_S20_3LE:
 278                 iface |= 0x0004;
 279                 break;
 280         case SNDRV_PCM_FORMAT_S24_LE:
 281                 iface |= 0x0008;
 282                 break;
 283         case SNDRV_PCM_FORMAT_S32_LE:
 284                 iface |= 0x000c;
 285                 break;
 286         }
 287         snd_soc_write(codec, SSM2602_IFACE, iface);
 288         return 0;
 289 }
 290
 291 static int ssm2602_startup(struct snd_pcm_substream *substream,
 292                            struct snd_soc_dai *dai)
 293 {
 294         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 295         struct snd_soc_codec *codec = rtd->codec;
 296         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 297         struct snd_pcm_runtime *master_runtime;
 298
 299         /* The DAI has shared clocks so if we already have a playback or
 300          * capture going then constrain this substream to match it.
 301          * TODO: the ssm2602 allows pairs of non-matching PB/REC rates
 302          */
 303         if (ssm2602->master_substream) {
 304                 master_runtime = ssm2602->master_substream->runtime;
 305                 dev_dbg(codec->dev, "Constraining to %d bits at %dHz\n",
 306                         master_runtime->sample_bits,
 307                         master_runtime->rate);
 308
 309                 if (master_runtime->rate != 0)
 310                         snd_pcm_hw_constraint_minmax(substream->runtime,
 311                                                      SNDRV_PCM_HW_PARAM_RATE,
 312                                                      master_runtime->rate,
 313                                                      master_runtime->rate);
 314
 315                 if (master_runtime->sample_bits != 0)
 316                         snd_pcm_hw_constraint_minmax(substream->runtime,
 317                                                      SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
 318                                                      master_runtime->sample_bits,
 319                                                      master_runtime->sample_bits);
 320
 321                 ssm2602->slave_substream = substream;
 322         } else
 323                 ssm2602->master_substream = substream;
 324
 325         return 0;
 326 }
 327
 328 static void ssm2602_shutdown(struct snd_pcm_substream *substream,
 329                              struct snd_soc_dai *dai)
 330 {
 331         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 332         struct snd_soc_codec *codec = rtd->codec;
 333         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 334
 335         if (ssm2602->master_substream == substream)
 336                 ssm2602->master_substream = ssm2602->slave_substream;
 337
 338         ssm2602->slave_substream = NULL;
 339 }
 340
 341
 342 static int ssm2602_mute(struct snd_soc_dai *dai, int mute)
 343 {
 344         struct snd_soc_codec *codec = dai->codec;
 345         u16 mute_reg = snd_soc_read(codec, SSM2602_APDIGI) & ~APDIGI_ENABLE_DAC_MUTE;
 346         if (mute)
 347                 snd_soc_write(codec, SSM2602_APDIGI,
 348                                 mute_reg | APDIGI_ENABLE_DAC_MUTE);
 349         else
 350                 snd_soc_write(codec, SSM2602_APDIGI, mute_reg);
 351         return 0;
 352 }
 353
 354 static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 355                 int clk_id, unsigned int freq, int dir)
 356 {
 357         struct snd_soc_codec *codec = codec_dai->codec;
 358         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 359         switch (freq) {
 360         case 11289600:
 361         case 12000000:
 362         case 12288000:
 363         case 16934400:
 364         case 18432000:
 365                 ssm2602->sysclk = freq;
 366                 return 0;
 367         }
 368         return -EINVAL;
 369 }
 370
 371 static int ssm2602_set_dai_fmt(struct snd_soc_dai *codec_dai,
 372                 unsigned int fmt)
 373 {
 374         struct snd_soc_codec *codec = codec_dai->codec;
 375         u16 iface = 0;
 376
 377         /* set master/slave audio interface */
 378         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 379         case SND_SOC_DAIFMT_CBM_CFM:
 380                 iface |= 0x0040;
 381                 break;
 382         case SND_SOC_DAIFMT_CBS_CFS:
 383                 break;
 384         default:
 385                 return -EINVAL;
 386         }
 387
 388         /* interface format */
 389         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 390         case SND_SOC_DAIFMT_I2S:
 391                 iface |= 0x0002;
 392                 break;
 393         case SND_SOC_DAIFMT_RIGHT_J:
 394                 break;
 395         case SND_SOC_DAIFMT_LEFT_J:
 396                 iface |= 0x0001;
 397                 break;
 398         case SND_SOC_DAIFMT_DSP_A:
 399                 iface |= 0x0013;
 400                 break;
 401         case SND_SOC_DAIFMT_DSP_B:
 402                 iface |= 0x0003;
 403                 break;
 404         default:
 405                 return -EINVAL;
 406         }
 407
 408         /* clock inversion */
 409         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 410         case SND_SOC_DAIFMT_NB_NF:
 411                 break;
 412         case SND_SOC_DAIFMT_IB_IF:
 413                 iface |= 0x0090;
 414                 break;
 415         case SND_SOC_DAIFMT_IB_NF:
 416                 iface |= 0x0080;
 417                 break;
 418         case SND_SOC_DAIFMT_NB_IF:
 419                 iface |= 0x0010;
 420                 break;
 421         default:
 422                 return -EINVAL;
 423         }
 424
 425         /* set iface */
 426         snd_soc_write(codec, SSM2602_IFACE, iface);
 427         return 0;
 428 }
 429
 430 static int ssm2602_set_bias_level(struct snd_soc_codec *codec,
 431                                  enum snd_soc_bias_level level)
 432 {
 433         u16 reg = snd_soc_read(codec, SSM2602_PWR);
 434         reg &= ~(PWR_POWER_OFF | PWR_OSC_PDN);
 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_PWR, 0xffff);
 450                 break;
 451
 452         }
 453         codec->dapm.bias_level = level;
 454         return 0;
 455 }
 456
 457 #define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_32000 |\
 458                 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
 459                 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
 460
 461 #define SSM2602_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 462                 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 463
 464 static struct snd_soc_dai_ops ssm2602_dai_ops = {
 465         .startup        = ssm2602_startup,
 466         .hw_params      = ssm2602_hw_params,
 467         .shutdown       = ssm2602_shutdown,
 468         .digital_mute   = ssm2602_mute,
 469         .set_sysclk     = ssm2602_set_dai_sysclk,
 470         .set_fmt        = ssm2602_set_dai_fmt,
 471 };
 472
 473 static struct snd_soc_dai_driver ssm2602_dai = {
 474         .name = "ssm2602-hifi",
 475         .playback = {
 476                 .stream_name = "Playback",
 477                 .channels_min = 2,
 478                 .channels_max = 2,
 479                 .rates = SSM2602_RATES,
 480                 .formats = SSM2602_FORMATS,},
 481         .capture = {
 482                 .stream_name = "Capture",
 483                 .channels_min = 2,
 484                 .channels_max = 2,
 485                 .rates = SSM2602_RATES,
 486                 .formats = SSM2602_FORMATS,},
 487         .ops = &ssm2602_dai_ops,
 488 };
 489
 490 static int ssm2602_suspend(struct snd_soc_codec *codec, pm_message_t state)
 491 {
 492         ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
 493         return 0;
 494 }
 495
 496 static int ssm2602_resume(struct snd_soc_codec *codec)
 497 {
 498         snd_soc_cache_sync(codec);
 499
 500         ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 501
 502         return 0;
 503 }
 504
 505 static int ssm2602_probe(struct snd_soc_codec *codec)
 506 {
 507         struct snd_soc_dapm_context *dapm = &codec->dapm;
 508         int ret, reg;
 509
 510         reg = snd_soc_read(codec, SSM2602_LOUT1V);
 511         snd_soc_write(codec, SSM2602_LOUT1V, reg | LOUT1V_LRHP_BOTH);
 512         reg = snd_soc_read(codec, SSM2602_ROUT1V);
 513         snd_soc_write(codec, SSM2602_ROUT1V, reg | ROUT1V_RLHP_BOTH);
 514
 515         ret = snd_soc_add_controls(codec, ssm2602_snd_controls,
 516                         ARRAY_SIZE(ssm2602_snd_controls));
 517         if (ret)
 518                 return ret;
 519
 520         ret = snd_soc_dapm_new_controls(dapm, ssm2602_dapm_widgets,
 521                         ARRAY_SIZE(ssm2602_dapm_widgets));
 522         if (ret)
 523                 return ret;
 524
 525         return snd_soc_dapm_add_routes(dapm, ssm2602_routes,
 526                         ARRAY_SIZE(ssm2602_routes));
 527 }
 528
 529 static int ssm2604_probe(struct snd_soc_codec *codec)
 530 {
 531         struct snd_soc_dapm_context *dapm = &codec->dapm;
 532         int ret;
 533
 534         ret = snd_soc_dapm_new_controls(dapm, ssm2604_dapm_widgets,
 535                         ARRAY_SIZE(ssm2604_dapm_widgets));
 536         if (ret)
 537                 return ret;
 538
 539         return snd_soc_dapm_add_routes(dapm, ssm2604_routes,
 540                         ARRAY_SIZE(ssm2604_routes));
 541 }
 542
 543 static int ssm260x_probe(struct snd_soc_codec *codec)
 544 {
 545         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 546         int ret, reg;
 547
 548         pr_info("ssm2602 Audio Codec %s", SSM2602_VERSION);
 549
 550         ret = snd_soc_codec_set_cache_io(codec, 7, 9, ssm2602->control_type);
 551         if (ret < 0) {
 552                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 553                 return ret;
 554         }
 555
 556         ret = ssm2602_reset(codec);
 557         if (ret < 0) {
 558                 dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
 559                 return ret;
 560         }
 561
 562         /* set the update bits */
 563         reg = snd_soc_read(codec, SSM2602_LINVOL);
 564         snd_soc_write(codec, SSM2602_LINVOL, reg | LINVOL_LRIN_BOTH);
 565         reg = snd_soc_read(codec, SSM2602_RINVOL);
 566         snd_soc_write(codec, SSM2602_RINVOL, reg | RINVOL_RLIN_BOTH);
 567         /*select Line in as default input*/
 568         snd_soc_write(codec, SSM2602_APANA, APANA_SELECT_DAC |
 569                         APANA_ENABLE_MIC_BOOST);
 570
 571         switch (ssm2602->type) {
 572         case SSM2602:
 573                 ret = ssm2602_probe(codec);
 574                 break;
 575         case SSM2604:
 576                 ret = ssm2604_probe(codec);
 577                 break;
 578         }
 579
 580         if (ret)
 581                 return ret;
 582
 583         ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 584
 585         return 0;
 586 }
 587
 588 /* remove everything here */
 589 static int ssm2602_remove(struct snd_soc_codec *codec)
 590 {
 591         ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
 592         return 0;
 593 }
 594
 595 static struct snd_soc_codec_driver soc_codec_dev_ssm2602 = {
 596         .probe =        ssm260x_probe,
 597         .remove =       ssm2602_remove,
 598         .suspend =      ssm2602_suspend,
 599         .resume =       ssm2602_resume,
 600         .set_bias_level = ssm2602_set_bias_level,
 601         .reg_cache_size = ARRAY_SIZE(ssm2602_reg),
 602         .reg_word_size = sizeof(u16),
 603         .reg_cache_default = ssm2602_reg,
 604
 605         .controls = ssm260x_snd_controls,
 606         .num_controls = ARRAY_SIZE(ssm260x_snd_controls),
 607         .dapm_widgets = ssm260x_dapm_widgets,
 608         .num_dapm_widgets = ARRAY_SIZE(ssm260x_dapm_widgets),
 609         .dapm_routes = ssm260x_routes,
 610         .num_dapm_routes = ARRAY_SIZE(ssm260x_routes),
 611 };
 612
 613 #if defined(CONFIG_SPI_MASTER)
 614 static int __devinit ssm2602_spi_probe(struct spi_device *spi)
 615 {
 616         struct ssm2602_priv *ssm2602;
 617         int ret;
 618
 619         ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL);
 620         if (ssm2602 == NULL)
 621                 return -ENOMEM;
 622
 623         spi_set_drvdata(spi, ssm2602);
 624         ssm2602->control_type = SND_SOC_SPI;
 625         ssm2602->type = SSM2602;
 626
 627         ret = snd_soc_register_codec(&spi->dev,
 628                         &soc_codec_dev_ssm2602, &ssm2602_dai, 1);
 629         if (ret < 0)
 630                 kfree(ssm2602);
 631         return ret;
 632 }
 633
 634 static int __devexit ssm2602_spi_remove(struct spi_device *spi)
 635 {
 636         snd_soc_unregister_codec(&spi->dev);
 637         kfree(spi_get_drvdata(spi));
 638         return 0;
 639 }
 640
 641 static struct spi_driver ssm2602_spi_driver = {
 642         .driver = {
 643                 .name   = "ssm2602",
 644                 .owner  = THIS_MODULE,
 645         },
 646         .probe          = ssm2602_spi_probe,
 647         .remove         = __devexit_p(ssm2602_spi_remove),
 648 };
 649 #endif
 650
 651 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 652 /*
 653  * ssm2602 2 wire address is determined by GPIO5
 654  * state during powerup.
 655  *    low  = 0x1a
 656  *    high = 0x1b
 657  */
 658 static int __devinit ssm2602_i2c_probe(struct i2c_client *i2c,
 659                              const struct i2c_device_id *id)
 660 {
 661         struct ssm2602_priv *ssm2602;
 662         int ret;
 663
 664         ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL);
 665         if (ssm2602 == NULL)
 666                 return -ENOMEM;
 667
 668         i2c_set_clientdata(i2c, ssm2602);
 669         ssm2602->control_type = SND_SOC_I2C;
 670         ssm2602->type = id->driver_data;
 671
 672         ret = snd_soc_register_codec(&i2c->dev,
 673                         &soc_codec_dev_ssm2602, &ssm2602_dai, 1);
 674         if (ret < 0)
 675                 kfree(ssm2602);
 676         return ret;
 677 }
 678
 679 static int __devexit ssm2602_i2c_remove(struct i2c_client *client)
 680 {
 681         snd_soc_unregister_codec(&client->dev);
 682         kfree(i2c_get_clientdata(client));
 683         return 0;
 684 }
 685
 686 static const struct i2c_device_id ssm2602_i2c_id[] = {
 687         { "ssm2602", SSM2602 },
 688         { "ssm2603", SSM2602 },
 689         { "ssm2604", SSM2604 },
 690         { }
 691 };
 692 MODULE_DEVICE_TABLE(i2c, ssm2602_i2c_id);
 693
 694 /* corgi i2c codec control layer */
 695 static struct i2c_driver ssm2602_i2c_driver = {
 696         .driver = {
 697                 .name = "ssm2602",
 698                 .owner = THIS_MODULE,
 699         },
 700         .probe = ssm2602_i2c_probe,
 701         .remove = __devexit_p(ssm2602_i2c_remove),
 702         .id_table = ssm2602_i2c_id,
 703 };
 704 #endif
 705
 706
 707 static int __init ssm2602_modinit(void)
 708 {
 709         int ret = 0;
 710
 711 #if defined(CONFIG_SPI_MASTER)
 712         ret = spi_register_driver(&ssm2602_spi_driver);
 713         if (ret)
 714                 return ret;
 715 #endif
 716
 717 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 718         ret = i2c_add_driver(&ssm2602_i2c_driver);
 719         if (ret)
 720                 return ret;
 721 #endif
 722
 723         return ret;
 724 }
 725 module_init(ssm2602_modinit);
 726
 727 static void __exit ssm2602_exit(void)
 728 {
 729 #if defined(CONFIG_SPI_MASTER)
 730         spi_unregister_driver(&ssm2602_spi_driver);
 731 #endif
 732
 733 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 734         i2c_del_driver(&ssm2602_i2c_driver);
 735 #endif
 736 }
 737 module_exit(ssm2602_exit);
 738
 739 MODULE_DESCRIPTION("ASoC SSM2602/SSM2603/SSM2604 driver");
 740 MODULE_AUTHOR("Cliff Cai");
 741 MODULE_LICENSE("GPL");