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/regmap.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 enum ssm2602_type {
  48         SSM2602,
  49         SSM2604,
  50 };
  51
  52 /* codec private data */
  53 struct ssm2602_priv {
  54         unsigned int sysclk;
  55         struct snd_pcm_hw_constraint_list *sysclk_constraints;
  56
  57         struct regmap *regmap;
  58
  59         enum ssm2602_type type;
  60         unsigned int clk_out_pwr;
  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
  76 /*Appending several "None"s just for OSS mixer use*/
  77 static const char *ssm2602_input_select[] = {
  78         "Line", "Mic", "None", "None", "None",
  79         "None", "None", "None",
  80 };
  81
  82 static const char *ssm2602_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
  83
  84 static const struct soc_enum ssm2602_enum[] = {
  85         SOC_ENUM_SINGLE(SSM2602_APANA, 2, 2, ssm2602_input_select),
  86         SOC_ENUM_SINGLE(SSM2602_APDIGI, 1, 4, ssm2602_deemph),
  87 };
  88
  89 static const unsigned int ssm260x_outmix_tlv[] = {
  90         TLV_DB_RANGE_HEAD(2),
  91         0, 47, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
  92         48, 127, TLV_DB_SCALE_ITEM(-7400, 100, 0),
  93 };
  94
  95 static const DECLARE_TLV_DB_SCALE(ssm260x_inpga_tlv, -3450, 150, 0);
  96 static const DECLARE_TLV_DB_SCALE(ssm260x_sidetone_tlv, -1500, 300, 0);
  97
  98 static const struct snd_kcontrol_new ssm260x_snd_controls[] = {
  99 SOC_DOUBLE_R_TLV("Capture Volume", SSM2602_LINVOL, SSM2602_RINVOL, 0, 45, 0,
 100         ssm260x_inpga_tlv),
 101 SOC_DOUBLE_R("Capture Switch", SSM2602_LINVOL, SSM2602_RINVOL, 7, 1, 1),
 102
 103 SOC_SINGLE("ADC High Pass Filter Switch", SSM2602_APDIGI, 0, 1, 1),
 104 SOC_SINGLE("Store DC Offset Switch", SSM2602_APDIGI, 4, 1, 0),
 105
 106 SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]),
 107 };
 108
 109 static const struct snd_kcontrol_new ssm2602_snd_controls[] = {
 110 SOC_DOUBLE_R_TLV("Master Playback Volume", SSM2602_LOUT1V, SSM2602_ROUT1V,
 111         0, 127, 0, ssm260x_outmix_tlv),
 112 SOC_DOUBLE_R("Master Playback ZC Switch", SSM2602_LOUT1V, SSM2602_ROUT1V,
 113         7, 1, 0),
 114 SOC_SINGLE_TLV("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1,
 115         ssm260x_sidetone_tlv),
 116
 117 SOC_SINGLE("Mic Boost (+20dB)", SSM2602_APANA, 0, 1, 0),
 118 SOC_SINGLE("Mic Boost2 (+20dB)", SSM2602_APANA, 8, 1, 0),
 119 SOC_SINGLE("Mic Switch", SSM2602_APANA, 1, 1, 1),
 120 };
 121
 122 /* Output Mixer */
 123 static const struct snd_kcontrol_new ssm260x_output_mixer_controls[] = {
 124 SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0),
 125 SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0),
 126 SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0),
 127 };
 128
 129 /* Input mux */
 130 static const struct snd_kcontrol_new ssm2602_input_mux_controls =
 131 SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]);
 132
 133 static const struct snd_soc_dapm_widget ssm260x_dapm_widgets[] = {
 134 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1),
 135 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1),
 136 SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0),
 137
 138 SND_SOC_DAPM_SUPPLY("Digital Core Power", SSM2602_ACTIVE, 0, 0, NULL, 0),
 139
 140 SND_SOC_DAPM_OUTPUT("LOUT"),
 141 SND_SOC_DAPM_OUTPUT("ROUT"),
 142 SND_SOC_DAPM_INPUT("RLINEIN"),
 143 SND_SOC_DAPM_INPUT("LLINEIN"),
 144 };
 145
 146 static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = {
 147 SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1,
 148         ssm260x_output_mixer_controls,
 149         ARRAY_SIZE(ssm260x_output_mixer_controls)),
 150
 151 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls),
 152 SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1),
 153
 154 SND_SOC_DAPM_OUTPUT("LHPOUT"),
 155 SND_SOC_DAPM_OUTPUT("RHPOUT"),
 156 SND_SOC_DAPM_INPUT("MICIN"),
 157 };
 158
 159 static const struct snd_soc_dapm_widget ssm2604_dapm_widgets[] = {
 160 SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
 161         ssm260x_output_mixer_controls,
 162         ARRAY_SIZE(ssm260x_output_mixer_controls) - 1), /* Last element is the mic */
 163 };
 164
 165 static const struct snd_soc_dapm_route ssm260x_routes[] = {
 166         {"DAC", NULL, "Digital Core Power"},
 167         {"ADC", NULL, "Digital Core Power"},
 168
 169         {"Output Mixer", "Line Bypass Switch", "Line Input"},
 170         {"Output Mixer", "HiFi Playback Switch", "DAC"},
 171
 172         {"ROUT", NULL, "Output Mixer"},
 173         {"LOUT", NULL, "Output Mixer"},
 174
 175         {"Line Input", NULL, "LLINEIN"},
 176         {"Line Input", NULL, "RLINEIN"},
 177 };
 178
 179 static const struct snd_soc_dapm_route ssm2602_routes[] = {
 180         {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
 181
 182         {"RHPOUT", NULL, "Output Mixer"},
 183         {"LHPOUT", NULL, "Output Mixer"},
 184
 185         {"Input Mux", "Line", "Line Input"},
 186         {"Input Mux", "Mic", "Mic Bias"},
 187         {"ADC", NULL, "Input Mux"},
 188
 189         {"Mic Bias", NULL, "MICIN"},
 190 };
 191
 192 static const struct snd_soc_dapm_route ssm2604_routes[] = {
 193         {"ADC", NULL, "Line Input"},
 194 };
 195
 196 static const unsigned int ssm2602_rates_12288000[] = {
 197         8000, 16000, 32000, 48000, 96000,
 198 };
 199
 200 static struct snd_pcm_hw_constraint_list ssm2602_constraints_12288000 = {
 201         .list = ssm2602_rates_12288000,
 202         .count = ARRAY_SIZE(ssm2602_rates_12288000),
 203 };
 204
 205 static const unsigned int ssm2602_rates_11289600[] = {
 206         8000, 44100, 88200,
 207 };
 208
 209 static struct snd_pcm_hw_constraint_list ssm2602_constraints_11289600 = {
 210         .list = ssm2602_rates_11289600,
 211         .count = ARRAY_SIZE(ssm2602_rates_11289600),
 212 };
 213
 214 struct ssm2602_coeff {
 215         u32 mclk;
 216         u32 rate;
 217         u8 srate;
 218 };
 219
 220 #define SSM2602_COEFF_SRATE(sr, bosr, usb) (((sr) << 2) | ((bosr) << 1) | (usb))
 221
 222 /* codec mclk clock coefficients */
 223 static const struct ssm2602_coeff ssm2602_coeff_table[] = {
 224         /* 48k */
 225         {12288000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x0)},
 226         {18432000, 48000, SSM2602_COEFF_SRATE(0x0, 0x1, 0x0)},
 227         {12000000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x1)},
 228
 229         /* 32k */
 230         {12288000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x0)},
 231         {18432000, 32000, SSM2602_COEFF_SRATE(0x6, 0x1, 0x0)},
 232         {12000000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x1)},
 233
 234         /* 16k */
 235         {12288000, 16000, SSM2602_COEFF_SRATE(0x5, 0x0, 0x0)},
 236         {18432000, 16000, SSM2602_COEFF_SRATE(0x5, 0x1, 0x0)},
 237         {12000000, 16000, SSM2602_COEFF_SRATE(0xa, 0x0, 0x1)},
 238
 239         /* 8k */
 240         {12288000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x0)},
 241         {18432000, 8000, SSM2602_COEFF_SRATE(0x3, 0x1, 0x0)},
 242         {11289600, 8000, SSM2602_COEFF_SRATE(0xb, 0x0, 0x0)},
 243         {16934400, 8000, SSM2602_COEFF_SRATE(0xb, 0x1, 0x0)},
 244         {12000000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x1)},
 245
 246         /* 96k */
 247         {12288000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x0)},
 248         {18432000, 96000, SSM2602_COEFF_SRATE(0x7, 0x1, 0x0)},
 249         {12000000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x1)},
 250
 251         /* 44.1k */
 252         {11289600, 44100, SSM2602_COEFF_SRATE(0x8, 0x0, 0x0)},
 253         {16934400, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x0)},
 254         {12000000, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x1)},
 255
 256         /* 88.2k */
 257         {11289600, 88200, SSM2602_COEFF_SRATE(0xf, 0x0, 0x0)},
 258         {16934400, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x0)},
 259         {12000000, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x1)},
 260 };
 261
 262 static inline int ssm2602_get_coeff(int mclk, int rate)
 263 {
 264         int i;
 265
 266         for (i = 0; i < ARRAY_SIZE(ssm2602_coeff_table); i++) {
 267                 if (ssm2602_coeff_table[i].rate == rate &&
 268                         ssm2602_coeff_table[i].mclk == mclk)
 269                         return ssm2602_coeff_table[i].srate;
 270         }
 271         return -EINVAL;
 272 }
 273
 274 static int ssm2602_hw_params(struct snd_pcm_substream *substream,
 275         struct snd_pcm_hw_params *params,
 276         struct snd_soc_dai *dai)
 277 {
 278         struct snd_soc_codec *codec = dai->codec;
 279         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 280         int srate = ssm2602_get_coeff(ssm2602->sysclk, params_rate(params));
 281         unsigned int iface;
 282
 283         if (srate < 0)
 284                 return srate;
 285
 286         regmap_write(ssm2602->regmap, SSM2602_SRATE, srate);
 287
 288         /* bit size */
 289         switch (params_format(params)) {
 290         case SNDRV_PCM_FORMAT_S16_LE:
 291                 iface = 0x0;
 292                 break;
 293         case SNDRV_PCM_FORMAT_S20_3LE:
 294                 iface = 0x4;
 295                 break;
 296         case SNDRV_PCM_FORMAT_S24_LE:
 297                 iface = 0x8;
 298                 break;
 299         case SNDRV_PCM_FORMAT_S32_LE:
 300                 iface = 0xc;
 301                 break;
 302         default:
 303                 return -EINVAL;
 304         }
 305         regmap_update_bits(ssm2602->regmap, SSM2602_IFACE,
 306                 IFACE_AUDIO_DATA_LEN, iface);
 307         return 0;
 308 }
 309
 310 static int ssm2602_startup(struct snd_pcm_substream *substream,
 311                            struct snd_soc_dai *dai)
 312 {
 313         struct snd_soc_codec *codec = dai->codec;
 314         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 315
 316         if (ssm2602->sysclk_constraints) {
 317                 snd_pcm_hw_constraint_list(substream->runtime, 0,
 318                                    SNDRV_PCM_HW_PARAM_RATE,
 319                                    ssm2602->sysclk_constraints);
 320         }
 321
 322         return 0;
 323 }
 324
 325 static int ssm2602_mute(struct snd_soc_dai *dai, int mute)
 326 {
 327         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(dai->codec);
 328
 329         if (mute)
 330                 regmap_update_bits(ssm2602->regmap, SSM2602_APDIGI,
 331                                     APDIGI_ENABLE_DAC_MUTE,
 332                                     APDIGI_ENABLE_DAC_MUTE);
 333         else
 334                 regmap_update_bits(ssm2602->regmap, SSM2602_APDIGI,
 335                                     APDIGI_ENABLE_DAC_MUTE, 0);
 336         return 0;
 337 }
 338
 339 static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 340                 int clk_id, unsigned int freq, int dir)
 341 {
 342         struct snd_soc_codec *codec = codec_dai->codec;
 343         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 344
 345         if (dir == SND_SOC_CLOCK_IN) {
 346                 if (clk_id != SSM2602_SYSCLK)
 347                         return -EINVAL;
 348
 349                 switch (freq) {
 350                 case 12288000:
 351                 case 18432000:
 352                         ssm2602->sysclk_constraints = &ssm2602_constraints_12288000;
 353                         break;
 354                 case 11289600:
 355                 case 16934400:
 356                         ssm2602->sysclk_constraints = &ssm2602_constraints_11289600;
 357                         break;
 358                 case 12000000:
 359                         ssm2602->sysclk_constraints = NULL;
 360                         break;
 361                 default:
 362                         return -EINVAL;
 363                 }
 364                 ssm2602->sysclk = freq;
 365         } else {
 366                 unsigned int mask;
 367
 368                 switch (clk_id) {
 369                 case SSM2602_CLK_CLKOUT:
 370                         mask = PWR_CLK_OUT_PDN;
 371                         break;
 372                 case SSM2602_CLK_XTO:
 373                         mask = PWR_OSC_PDN;
 374                         break;
 375                 default:
 376                         return -EINVAL;
 377                 }
 378
 379                 if (freq == 0)
 380                         ssm2602->clk_out_pwr |= mask;
 381                 else
 382                         ssm2602->clk_out_pwr &= ~mask;
 383
 384                 regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
 385                         PWR_CLK_OUT_PDN | PWR_OSC_PDN, ssm2602->clk_out_pwr);
 386         }
 387
 388         return 0;
 389 }
 390
 391 static int ssm2602_set_dai_fmt(struct snd_soc_dai *codec_dai,
 392                 unsigned int fmt)
 393 {
 394         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec_dai->codec);
 395         unsigned int iface = 0;
 396
 397         /* set master/slave audio interface */
 398         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 399         case SND_SOC_DAIFMT_CBM_CFM:
 400                 iface |= 0x0040;
 401                 break;
 402         case SND_SOC_DAIFMT_CBS_CFS:
 403                 break;
 404         default:
 405                 return -EINVAL;
 406         }
 407
 408         /* interface format */
 409         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 410         case SND_SOC_DAIFMT_I2S:
 411                 iface |= 0x0002;
 412                 break;
 413         case SND_SOC_DAIFMT_RIGHT_J:
 414                 break;
 415         case SND_SOC_DAIFMT_LEFT_J:
 416                 iface |= 0x0001;
 417                 break;
 418         case SND_SOC_DAIFMT_DSP_A:
 419                 iface |= 0x0013;
 420                 break;
 421         case SND_SOC_DAIFMT_DSP_B:
 422                 iface |= 0x0003;
 423                 break;
 424         default:
 425                 return -EINVAL;
 426         }
 427
 428         /* clock inversion */
 429         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 430         case SND_SOC_DAIFMT_NB_NF:
 431                 break;
 432         case SND_SOC_DAIFMT_IB_IF:
 433                 iface |= 0x0090;
 434                 break;
 435         case SND_SOC_DAIFMT_IB_NF:
 436                 iface |= 0x0080;
 437                 break;
 438         case SND_SOC_DAIFMT_NB_IF:
 439                 iface |= 0x0010;
 440                 break;
 441         default:
 442                 return -EINVAL;
 443         }
 444
 445         /* set iface */
 446         regmap_write(ssm2602->regmap, SSM2602_IFACE, iface);
 447         return 0;
 448 }
 449
 450 static int ssm2602_set_bias_level(struct snd_soc_codec *codec,
 451                                  enum snd_soc_bias_level level)
 452 {
 453         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 454
 455         switch (level) {
 456         case SND_SOC_BIAS_ON:
 457                 /* vref/mid on, osc and clkout on if enabled */
 458                 regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
 459                         PWR_POWER_OFF | PWR_CLK_OUT_PDN | PWR_OSC_PDN,
 460                         ssm2602->clk_out_pwr);
 461                 break;
 462         case SND_SOC_BIAS_PREPARE:
 463                 break;
 464         case SND_SOC_BIAS_STANDBY:
 465                 /* everything off except vref/vmid, */
 466                 regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
 467                         PWR_POWER_OFF | PWR_CLK_OUT_PDN | PWR_OSC_PDN,
 468                         PWR_CLK_OUT_PDN | PWR_OSC_PDN);
 469                 break;
 470         case SND_SOC_BIAS_OFF:
 471                 /* everything off */
 472                 regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
 473                         PWR_POWER_OFF, PWR_POWER_OFF);
 474                 break;
 475
 476         }
 477         codec->dapm.bias_level = level;
 478         return 0;
 479 }
 480
 481 #define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |\
 482                 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
 483                 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
 484                 SNDRV_PCM_RATE_96000)
 485
 486 #define SSM2602_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 487                 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 488
 489 static const struct snd_soc_dai_ops ssm2602_dai_ops = {
 490         .startup        = ssm2602_startup,
 491         .hw_params      = ssm2602_hw_params,
 492         .digital_mute   = ssm2602_mute,
 493         .set_sysclk     = ssm2602_set_dai_sysclk,
 494         .set_fmt        = ssm2602_set_dai_fmt,
 495 };
 496
 497 static struct snd_soc_dai_driver ssm2602_dai = {
 498         .name = "ssm2602-hifi",
 499         .playback = {
 500                 .stream_name = "Playback",
 501                 .channels_min = 2,
 502                 .channels_max = 2,
 503                 .rates = SSM2602_RATES,
 504                 .formats = SSM2602_FORMATS,},
 505         .capture = {
 506                 .stream_name = "Capture",
 507                 .channels_min = 2,
 508                 .channels_max = 2,
 509                 .rates = SSM2602_RATES,
 510                 .formats = SSM2602_FORMATS,},
 511         .ops = &ssm2602_dai_ops,
 512         .symmetric_rates = 1,
 513         .symmetric_samplebits = 1,
 514 };
 515
 516 static int ssm2602_suspend(struct snd_soc_codec *codec)
 517 {
 518         ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
 519         return 0;
 520 }
 521
 522 static int ssm2602_resume(struct snd_soc_codec *codec)
 523 {
 524         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 525
 526         regcache_sync(ssm2602->regmap);
 527         ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 528
 529         return 0;
 530 }
 531
 532 static int ssm2602_probe(struct snd_soc_codec *codec)
 533 {
 534         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 535         struct snd_soc_dapm_context *dapm = &codec->dapm;
 536         int ret;
 537
 538         regmap_update_bits(ssm2602->regmap, SSM2602_LOUT1V,
 539                             LOUT1V_LRHP_BOTH, LOUT1V_LRHP_BOTH);
 540         regmap_update_bits(ssm2602->regmap, SSM2602_ROUT1V,
 541                             ROUT1V_RLHP_BOTH, ROUT1V_RLHP_BOTH);
 542
 543         ret = snd_soc_add_codec_controls(codec, ssm2602_snd_controls,
 544                         ARRAY_SIZE(ssm2602_snd_controls));
 545         if (ret)
 546                 return ret;
 547
 548         ret = snd_soc_dapm_new_controls(dapm, ssm2602_dapm_widgets,
 549                         ARRAY_SIZE(ssm2602_dapm_widgets));
 550         if (ret)
 551                 return ret;
 552
 553         return snd_soc_dapm_add_routes(dapm, ssm2602_routes,
 554                         ARRAY_SIZE(ssm2602_routes));
 555 }
 556
 557 static int ssm2604_probe(struct snd_soc_codec *codec)
 558 {
 559         struct snd_soc_dapm_context *dapm = &codec->dapm;
 560         int ret;
 561
 562         ret = snd_soc_dapm_new_controls(dapm, ssm2604_dapm_widgets,
 563                         ARRAY_SIZE(ssm2604_dapm_widgets));
 564         if (ret)
 565                 return ret;
 566
 567         return snd_soc_dapm_add_routes(dapm, ssm2604_routes,
 568                         ARRAY_SIZE(ssm2604_routes));
 569 }
 570
 571 static int ssm260x_probe(struct snd_soc_codec *codec)
 572 {
 573         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 574         int ret;
 575
 576         codec->control_data = ssm2602->regmap;
 577         ret = snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP);
 578         if (ret < 0) {
 579                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 580                 return ret;
 581         }
 582
 583         ret = regmap_write(ssm2602->regmap, SSM2602_RESET, 0);
 584         if (ret < 0) {
 585                 dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
 586                 return ret;
 587         }
 588
 589         /* set the update bits */
 590         regmap_update_bits(ssm2602->regmap, SSM2602_LINVOL,
 591                             LINVOL_LRIN_BOTH, LINVOL_LRIN_BOTH);
 592         regmap_update_bits(ssm2602->regmap, SSM2602_RINVOL,
 593                             RINVOL_RLIN_BOTH, RINVOL_RLIN_BOTH);
 594         /*select Line in as default input*/
 595         regmap_write(ssm2602->regmap, SSM2602_APANA, APANA_SELECT_DAC |
 596                         APANA_ENABLE_MIC_BOOST);
 597
 598         switch (ssm2602->type) {
 599         case SSM2602:
 600                 ret = ssm2602_probe(codec);
 601                 break;
 602         case SSM2604:
 603                 ret = ssm2604_probe(codec);
 604                 break;
 605         }
 606
 607         if (ret)
 608                 return ret;
 609
 610         ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 611
 612         return 0;
 613 }
 614
 615 /* remove everything here */
 616 static int ssm2602_remove(struct snd_soc_codec *codec)
 617 {
 618         ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
 619         return 0;
 620 }
 621
 622 static struct snd_soc_codec_driver soc_codec_dev_ssm2602 = {
 623         .probe =        ssm260x_probe,
 624         .remove =       ssm2602_remove,
 625         .suspend =      ssm2602_suspend,
 626         .resume =       ssm2602_resume,
 627         .set_bias_level = ssm2602_set_bias_level,
 628
 629         .controls = ssm260x_snd_controls,
 630         .num_controls = ARRAY_SIZE(ssm260x_snd_controls),
 631         .dapm_widgets = ssm260x_dapm_widgets,
 632         .num_dapm_widgets = ARRAY_SIZE(ssm260x_dapm_widgets),
 633         .dapm_routes = ssm260x_routes,
 634         .num_dapm_routes = ARRAY_SIZE(ssm260x_routes),
 635 };
 636
 637 static bool ssm2602_register_volatile(struct device *dev, unsigned int reg)
 638 {
 639         return reg == SSM2602_RESET;
 640 }
 641
 642 static const struct regmap_config ssm2602_regmap_config = {
 643         .val_bits = 9,
 644         .reg_bits = 7,
 645
 646         .max_register = SSM2602_RESET,
 647         .volatile_reg = ssm2602_register_volatile,
 648
 649         .cache_type = REGCACHE_RBTREE,
 650         .reg_defaults_raw = ssm2602_reg,
 651         .num_reg_defaults_raw = ARRAY_SIZE(ssm2602_reg),
 652 };
 653
 654 #if defined(CONFIG_SPI_MASTER)
 655 static int ssm2602_spi_probe(struct spi_device *spi)
 656 {
 657         struct ssm2602_priv *ssm2602;
 658         int ret;
 659
 660         ssm2602 = devm_kzalloc(&spi->dev, sizeof(struct ssm2602_priv),
 661                                GFP_KERNEL);
 662         if (ssm2602 == NULL)
 663                 return -ENOMEM;
 664
 665         spi_set_drvdata(spi, ssm2602);
 666         ssm2602->type = SSM2602;
 667
 668         ssm2602->regmap = devm_regmap_init_spi(spi, &ssm2602_regmap_config);
 669         if (IS_ERR(ssm2602->regmap))
 670                 return PTR_ERR(ssm2602->regmap);
 671
 672         ret = snd_soc_register_codec(&spi->dev,
 673                         &soc_codec_dev_ssm2602, &ssm2602_dai, 1);
 674         return ret;
 675 }
 676
 677 static int ssm2602_spi_remove(struct spi_device *spi)
 678 {
 679         snd_soc_unregister_codec(&spi->dev);
 680         return 0;
 681 }
 682
 683 static struct spi_driver ssm2602_spi_driver = {
 684         .driver = {
 685                 .name   = "ssm2602",
 686                 .owner  = THIS_MODULE,
 687         },
 688         .probe          = ssm2602_spi_probe,
 689         .remove         = ssm2602_spi_remove,
 690 };
 691 #endif
 692
 693 #if IS_ENABLED(CONFIG_I2C)
 694 /*
 695  * ssm2602 2 wire address is determined by GPIO5
 696  * state during powerup.
 697  *    low  = 0x1a
 698  *    high = 0x1b
 699  */
 700 static int ssm2602_i2c_probe(struct i2c_client *i2c,
 701                              const struct i2c_device_id *id)
 702 {
 703         struct ssm2602_priv *ssm2602;
 704         int ret;
 705
 706         ssm2602 = devm_kzalloc(&i2c->dev, sizeof(struct ssm2602_priv),
 707                                GFP_KERNEL);
 708         if (ssm2602 == NULL)
 709                 return -ENOMEM;
 710
 711         i2c_set_clientdata(i2c, ssm2602);
 712         ssm2602->type = id->driver_data;
 713
 714         ssm2602->regmap = devm_regmap_init_i2c(i2c, &ssm2602_regmap_config);
 715         if (IS_ERR(ssm2602->regmap))
 716                 return PTR_ERR(ssm2602->regmap);
 717
 718         ret = snd_soc_register_codec(&i2c->dev,
 719                         &soc_codec_dev_ssm2602, &ssm2602_dai, 1);
 720         return ret;
 721 }
 722
 723 static int ssm2602_i2c_remove(struct i2c_client *client)
 724 {
 725         snd_soc_unregister_codec(&client->dev);
 726         return 0;
 727 }
 728
 729 static const struct i2c_device_id ssm2602_i2c_id[] = {
 730         { "ssm2602", SSM2602 },
 731         { "ssm2603", SSM2602 },
 732         { "ssm2604", SSM2604 },
 733         { }
 734 };
 735 MODULE_DEVICE_TABLE(i2c, ssm2602_i2c_id);
 736
 737 /* corgi i2c codec control layer */
 738 static struct i2c_driver ssm2602_i2c_driver = {
 739         .driver = {
 740                 .name = "ssm2602",
 741                 .owner = THIS_MODULE,
 742         },
 743         .probe = ssm2602_i2c_probe,
 744         .remove = ssm2602_i2c_remove,
 745         .id_table = ssm2602_i2c_id,
 746 };
 747 #endif
 748
 749
 750 static int __init ssm2602_modinit(void)
 751 {
 752         int ret = 0;
 753
 754 #if defined(CONFIG_SPI_MASTER)
 755         ret = spi_register_driver(&ssm2602_spi_driver);
 756         if (ret)
 757                 return ret;
 758 #endif
 759
 760 #if IS_ENABLED(CONFIG_I2C)
 761         ret = i2c_add_driver(&ssm2602_i2c_driver);
 762         if (ret)
 763                 return ret;
 764 #endif
 765
 766         return ret;
 767 }
 768 module_init(ssm2602_modinit);
 769
 770 static void __exit ssm2602_exit(void)
 771 {
 772 #if defined(CONFIG_SPI_MASTER)
 773         spi_unregister_driver(&ssm2602_spi_driver);
 774 #endif
 775
 776 #if IS_ENABLED(CONFIG_I2C)
 777         i2c_del_driver(&ssm2602_i2c_driver);
 778 #endif
 779 }
 780 module_exit(ssm2602_exit);
 781
 782 MODULE_DESCRIPTION("ASoC SSM2602/SSM2603/SSM2604 driver");
 783 MODULE_AUTHOR("Cliff Cai");
 784 MODULE_LICENSE("GPL");