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         struct snd_pcm_substream *master_substream;
  57         struct snd_pcm_substream *slave_substream;
  58
  59         struct regmap *regmap;
  60
  61         enum ssm2602_type type;
  62         unsigned int clk_out_pwr;
  63 };
  64
  65 /*
  66  * ssm2602 register cache
  67  * We can't read the ssm2602 register space when we are
  68  * using 2 wire for device control, so we cache them instead.
  69  * There is no point in caching the reset register
  70  */
  71 static const u16 ssm2602_reg[SSM2602_CACHEREGNUM] = {
  72         0x0097, 0x0097, 0x0079, 0x0079,
  73         0x000a, 0x0008, 0x009f, 0x000a,
  74         0x0000, 0x0000
  75 };
  76
  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 static const unsigned int ssm2602_rates_12288000[] = {
 199         8000, 32000, 48000, 96000,
 200 };
 201
 202 static struct snd_pcm_hw_constraint_list ssm2602_constraints_12288000 = {
 203         .list = ssm2602_rates_12288000,
 204         .count = ARRAY_SIZE(ssm2602_rates_12288000),
 205 };
 206
 207 static const unsigned int ssm2602_rates_11289600[] = {
 208         8000, 44100, 88200,
 209 };
 210
 211 static struct snd_pcm_hw_constraint_list ssm2602_constraints_11289600 = {
 212         .list = ssm2602_rates_11289600,
 213         .count = ARRAY_SIZE(ssm2602_rates_11289600),
 214 };
 215
 216 struct ssm2602_coeff {
 217         u32 mclk;
 218         u32 rate;
 219         u8 srate;
 220 };
 221
 222 #define SSM2602_COEFF_SRATE(sr, bosr, usb) (((sr) << 2) | ((bosr) << 1) | (usb))
 223
 224 /* codec mclk clock coefficients */
 225 static const struct ssm2602_coeff ssm2602_coeff_table[] = {
 226         /* 48k */
 227         {12288000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x0)},
 228         {18432000, 48000, SSM2602_COEFF_SRATE(0x0, 0x1, 0x0)},
 229         {12000000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x1)},
 230
 231         /* 32k */
 232         {12288000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x0)},
 233         {18432000, 32000, SSM2602_COEFF_SRATE(0x6, 0x1, 0x0)},
 234         {12000000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x1)},
 235
 236         /* 8k */
 237         {12288000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x0)},
 238         {18432000, 8000, SSM2602_COEFF_SRATE(0x3, 0x1, 0x0)},
 239         {11289600, 8000, SSM2602_COEFF_SRATE(0xb, 0x0, 0x0)},
 240         {16934400, 8000, SSM2602_COEFF_SRATE(0xb, 0x1, 0x0)},
 241         {12000000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x1)},
 242
 243         /* 96k */
 244         {12288000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x0)},
 245         {18432000, 96000, SSM2602_COEFF_SRATE(0x7, 0x1, 0x0)},
 246         {12000000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x1)},
 247
 248         /* 44.1k */
 249         {11289600, 44100, SSM2602_COEFF_SRATE(0x8, 0x0, 0x0)},
 250         {16934400, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x0)},
 251         {12000000, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x1)},
 252
 253         /* 88.2k */
 254         {11289600, 88200, SSM2602_COEFF_SRATE(0xf, 0x0, 0x0)},
 255         {16934400, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x0)},
 256         {12000000, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x1)},
 257 };
 258
 259 static inline int ssm2602_get_coeff(int mclk, int rate)
 260 {
 261         int i;
 262
 263         for (i = 0; i < ARRAY_SIZE(ssm2602_coeff_table); i++) {
 264                 if (ssm2602_coeff_table[i].rate == rate &&
 265                         ssm2602_coeff_table[i].mclk == mclk)
 266                         return ssm2602_coeff_table[i].srate;
 267         }
 268         return -EINVAL;
 269 }
 270
 271 static int ssm2602_hw_params(struct snd_pcm_substream *substream,
 272         struct snd_pcm_hw_params *params,
 273         struct snd_soc_dai *dai)
 274 {
 275         struct snd_soc_codec *codec = dai->codec;
 276         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 277         int srate = ssm2602_get_coeff(ssm2602->sysclk, params_rate(params));
 278         unsigned int iface;
 279
 280         if (substream == ssm2602->slave_substream) {
 281                 dev_dbg(codec->dev, "Ignoring hw_params for slave substream\n");
 282                 return 0;
 283         }
 284
 285         if (srate < 0)
 286                 return srate;
 287
 288         regmap_write(ssm2602->regmap, SSM2602_SRATE, srate);
 289
 290         /* bit size */
 291         switch (params_format(params)) {
 292         case SNDRV_PCM_FORMAT_S16_LE:
 293                 iface = 0x0;
 294                 break;
 295         case SNDRV_PCM_FORMAT_S20_3LE:
 296                 iface = 0x4;
 297                 break;
 298         case SNDRV_PCM_FORMAT_S24_LE:
 299                 iface = 0x8;
 300                 break;
 301         case SNDRV_PCM_FORMAT_S32_LE:
 302                 iface = 0xc;
 303                 break;
 304         default:
 305                 return -EINVAL;
 306         }
 307         regmap_update_bits(ssm2602->regmap, SSM2602_IFACE,
 308                 IFACE_AUDIO_DATA_LEN, iface);
 309         return 0;
 310 }
 311
 312 static int ssm2602_startup(struct snd_pcm_substream *substream,
 313                            struct snd_soc_dai *dai)
 314 {
 315         struct snd_soc_codec *codec = dai->codec;
 316         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 317         struct snd_pcm_runtime *master_runtime;
 318
 319         /* The DAI has shared clocks so if we already have a playback or
 320          * capture going then constrain this substream to match it.
 321          * TODO: the ssm2602 allows pairs of non-matching PB/REC rates
 322          */
 323         if (ssm2602->master_substream) {
 324                 master_runtime = ssm2602->master_substream->runtime;
 325                 dev_dbg(codec->dev, "Constraining to %d bits at %dHz\n",
 326                         master_runtime->sample_bits,
 327                         master_runtime->rate);
 328
 329                 if (master_runtime->rate != 0)
 330                         snd_pcm_hw_constraint_minmax(substream->runtime,
 331                                                      SNDRV_PCM_HW_PARAM_RATE,
 332                                                      master_runtime->rate,
 333                                                      master_runtime->rate);
 334
 335                 if (master_runtime->sample_bits != 0)
 336                         snd_pcm_hw_constraint_minmax(substream->runtime,
 337                                                      SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
 338                                                      master_runtime->sample_bits,
 339                                                      master_runtime->sample_bits);
 340
 341                 ssm2602->slave_substream = substream;
 342         } else
 343                 ssm2602->master_substream = substream;
 344
 345         if (ssm2602->sysclk_constraints) {
 346                 snd_pcm_hw_constraint_list(substream->runtime, 0,
 347                                    SNDRV_PCM_HW_PARAM_RATE,
 348                                    ssm2602->sysclk_constraints);
 349         }
 350
 351         return 0;
 352 }
 353
 354 static void ssm2602_shutdown(struct snd_pcm_substream *substream,
 355                              struct snd_soc_dai *dai)
 356 {
 357         struct snd_soc_codec *codec = dai->codec;
 358         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 359
 360         if (ssm2602->master_substream == substream)
 361                 ssm2602->master_substream = ssm2602->slave_substream;
 362
 363         ssm2602->slave_substream = NULL;
 364 }
 365
 366
 367 static int ssm2602_mute(struct snd_soc_dai *dai, int mute)
 368 {
 369         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(dai->codec);
 370
 371         if (mute)
 372                 regmap_update_bits(ssm2602->regmap, SSM2602_APDIGI,
 373                                     APDIGI_ENABLE_DAC_MUTE,
 374                                     APDIGI_ENABLE_DAC_MUTE);
 375         else
 376                 regmap_update_bits(ssm2602->regmap, SSM2602_APDIGI,
 377                                     APDIGI_ENABLE_DAC_MUTE, 0);
 378         return 0;
 379 }
 380
 381 static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 382                 int clk_id, unsigned int freq, int dir)
 383 {
 384         struct snd_soc_codec *codec = codec_dai->codec;
 385         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 386
 387         if (dir == SND_SOC_CLOCK_IN) {
 388                 if (clk_id != SSM2602_SYSCLK)
 389                         return -EINVAL;
 390
 391                 switch (freq) {
 392                 case 12288000:
 393                 case 18432000:
 394                         ssm2602->sysclk_constraints = &ssm2602_constraints_12288000;
 395                         break;
 396                 case 11289600:
 397                 case 16934400:
 398                         ssm2602->sysclk_constraints = &ssm2602_constraints_11289600;
 399                         break;
 400                 case 12000000:
 401                         ssm2602->sysclk_constraints = NULL;
 402                         break;
 403                 default:
 404                         return -EINVAL;
 405                 }
 406                 ssm2602->sysclk = freq;
 407         } else {
 408                 unsigned int mask;
 409
 410                 switch (clk_id) {
 411                 case SSM2602_CLK_CLKOUT:
 412                         mask = PWR_CLK_OUT_PDN;
 413                         break;
 414                 case SSM2602_CLK_XTO:
 415                         mask = PWR_OSC_PDN;
 416                         break;
 417                 default:
 418                         return -EINVAL;
 419                 }
 420
 421                 if (freq == 0)
 422                         ssm2602->clk_out_pwr |= mask;
 423                 else
 424                         ssm2602->clk_out_pwr &= ~mask;
 425
 426                 regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
 427                         PWR_CLK_OUT_PDN | PWR_OSC_PDN, ssm2602->clk_out_pwr);
 428         }
 429
 430         return 0;
 431 }
 432
 433 static int ssm2602_set_dai_fmt(struct snd_soc_dai *codec_dai,
 434                 unsigned int fmt)
 435 {
 436         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec_dai->codec);
 437         unsigned int iface = 0;
 438
 439         /* set master/slave audio interface */
 440         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 441         case SND_SOC_DAIFMT_CBM_CFM:
 442                 iface |= 0x0040;
 443                 break;
 444         case SND_SOC_DAIFMT_CBS_CFS:
 445                 break;
 446         default:
 447                 return -EINVAL;
 448         }
 449
 450         /* interface format */
 451         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 452         case SND_SOC_DAIFMT_I2S:
 453                 iface |= 0x0002;
 454                 break;
 455         case SND_SOC_DAIFMT_RIGHT_J:
 456                 break;
 457         case SND_SOC_DAIFMT_LEFT_J:
 458                 iface |= 0x0001;
 459                 break;
 460         case SND_SOC_DAIFMT_DSP_A:
 461                 iface |= 0x0013;
 462                 break;
 463         case SND_SOC_DAIFMT_DSP_B:
 464                 iface |= 0x0003;
 465                 break;
 466         default:
 467                 return -EINVAL;
 468         }
 469
 470         /* clock inversion */
 471         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 472         case SND_SOC_DAIFMT_NB_NF:
 473                 break;
 474         case SND_SOC_DAIFMT_IB_IF:
 475                 iface |= 0x0090;
 476                 break;
 477         case SND_SOC_DAIFMT_IB_NF:
 478                 iface |= 0x0080;
 479                 break;
 480         case SND_SOC_DAIFMT_NB_IF:
 481                 iface |= 0x0010;
 482                 break;
 483         default:
 484                 return -EINVAL;
 485         }
 486
 487         /* set iface */
 488         regmap_write(ssm2602->regmap, SSM2602_IFACE, iface);
 489         return 0;
 490 }
 491
 492 static int ssm2602_set_bias_level(struct snd_soc_codec *codec,
 493                                  enum snd_soc_bias_level level)
 494 {
 495         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 496
 497         switch (level) {
 498         case SND_SOC_BIAS_ON:
 499                 /* vref/mid on, osc and clkout on if enabled */
 500                 regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
 501                         PWR_POWER_OFF | PWR_CLK_OUT_PDN | PWR_OSC_PDN,
 502                         ssm2602->clk_out_pwr);
 503                 break;
 504         case SND_SOC_BIAS_PREPARE:
 505                 break;
 506         case SND_SOC_BIAS_STANDBY:
 507                 /* everything off except vref/vmid, */
 508                 regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
 509                         PWR_POWER_OFF | PWR_CLK_OUT_PDN | PWR_OSC_PDN,
 510                         PWR_CLK_OUT_PDN | PWR_OSC_PDN);
 511                 break;
 512         case SND_SOC_BIAS_OFF:
 513                 /* everything off */
 514                 regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
 515                         PWR_POWER_OFF, PWR_POWER_OFF);
 516                 break;
 517
 518         }
 519         codec->dapm.bias_level = level;
 520         return 0;
 521 }
 522
 523 #define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_32000 |\
 524                 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
 525                 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
 526
 527 #define SSM2602_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 528                 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 529
 530 static const struct snd_soc_dai_ops ssm2602_dai_ops = {
 531         .startup        = ssm2602_startup,
 532         .hw_params      = ssm2602_hw_params,
 533         .shutdown       = ssm2602_shutdown,
 534         .digital_mute   = ssm2602_mute,
 535         .set_sysclk     = ssm2602_set_dai_sysclk,
 536         .set_fmt        = ssm2602_set_dai_fmt,
 537 };
 538
 539 static struct snd_soc_dai_driver ssm2602_dai = {
 540         .name = "ssm2602-hifi",
 541         .playback = {
 542                 .stream_name = "Playback",
 543                 .channels_min = 2,
 544                 .channels_max = 2,
 545                 .rates = SSM2602_RATES,
 546                 .formats = SSM2602_FORMATS,},
 547         .capture = {
 548                 .stream_name = "Capture",
 549                 .channels_min = 2,
 550                 .channels_max = 2,
 551                 .rates = SSM2602_RATES,
 552                 .formats = SSM2602_FORMATS,},
 553         .ops = &ssm2602_dai_ops,
 554 };
 555
 556 static int ssm2602_suspend(struct snd_soc_codec *codec)
 557 {
 558         ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
 559         return 0;
 560 }
 561
 562 static int ssm2602_resume(struct snd_soc_codec *codec)
 563 {
 564         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 565
 566         regcache_sync(ssm2602->regmap);
 567         ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 568
 569         return 0;
 570 }
 571
 572 static int ssm2602_probe(struct snd_soc_codec *codec)
 573 {
 574         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 575         struct snd_soc_dapm_context *dapm = &codec->dapm;
 576         int ret;
 577
 578         regmap_update_bits(ssm2602->regmap, SSM2602_LOUT1V,
 579                             LOUT1V_LRHP_BOTH, LOUT1V_LRHP_BOTH);
 580         regmap_update_bits(ssm2602->regmap, SSM2602_ROUT1V,
 581                             ROUT1V_RLHP_BOTH, ROUT1V_RLHP_BOTH);
 582
 583         ret = snd_soc_add_codec_controls(codec, ssm2602_snd_controls,
 584                         ARRAY_SIZE(ssm2602_snd_controls));
 585         if (ret)
 586                 return ret;
 587
 588         ret = snd_soc_dapm_new_controls(dapm, ssm2602_dapm_widgets,
 589                         ARRAY_SIZE(ssm2602_dapm_widgets));
 590         if (ret)
 591                 return ret;
 592
 593         return snd_soc_dapm_add_routes(dapm, ssm2602_routes,
 594                         ARRAY_SIZE(ssm2602_routes));
 595 }
 596
 597 static int ssm2604_probe(struct snd_soc_codec *codec)
 598 {
 599         struct snd_soc_dapm_context *dapm = &codec->dapm;
 600         int ret;
 601
 602         ret = snd_soc_dapm_new_controls(dapm, ssm2604_dapm_widgets,
 603                         ARRAY_SIZE(ssm2604_dapm_widgets));
 604         if (ret)
 605                 return ret;
 606
 607         return snd_soc_dapm_add_routes(dapm, ssm2604_routes,
 608                         ARRAY_SIZE(ssm2604_routes));
 609 }
 610
 611 static int ssm260x_probe(struct snd_soc_codec *codec)
 612 {
 613         struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
 614         int ret;
 615
 616         codec->control_data = ssm2602->regmap;
 617         ret = snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP);
 618         if (ret < 0) {
 619                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 620                 return ret;
 621         }
 622
 623         ret = regmap_write(ssm2602->regmap, SSM2602_RESET, 0);
 624         if (ret < 0) {
 625                 dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
 626                 return ret;
 627         }
 628
 629         /* set the update bits */
 630         regmap_update_bits(ssm2602->regmap, SSM2602_LINVOL,
 631                             LINVOL_LRIN_BOTH, LINVOL_LRIN_BOTH);
 632         regmap_update_bits(ssm2602->regmap, SSM2602_RINVOL,
 633                             RINVOL_RLIN_BOTH, RINVOL_RLIN_BOTH);
 634         /*select Line in as default input*/
 635         regmap_write(ssm2602->regmap, SSM2602_APANA, APANA_SELECT_DAC |
 636                         APANA_ENABLE_MIC_BOOST);
 637
 638         switch (ssm2602->type) {
 639         case SSM2602:
 640                 ret = ssm2602_probe(codec);
 641                 break;
 642         case SSM2604:
 643                 ret = ssm2604_probe(codec);
 644                 break;
 645         }
 646
 647         if (ret)
 648                 return ret;
 649
 650         ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 651
 652         return 0;
 653 }
 654
 655 /* remove everything here */
 656 static int ssm2602_remove(struct snd_soc_codec *codec)
 657 {
 658         ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF);
 659         return 0;
 660 }
 661
 662 static struct snd_soc_codec_driver soc_codec_dev_ssm2602 = {
 663         .probe =        ssm260x_probe,
 664         .remove =       ssm2602_remove,
 665         .suspend =      ssm2602_suspend,
 666         .resume =       ssm2602_resume,
 667         .set_bias_level = ssm2602_set_bias_level,
 668
 669         .controls = ssm260x_snd_controls,
 670         .num_controls = ARRAY_SIZE(ssm260x_snd_controls),
 671         .dapm_widgets = ssm260x_dapm_widgets,
 672         .num_dapm_widgets = ARRAY_SIZE(ssm260x_dapm_widgets),
 673         .dapm_routes = ssm260x_routes,
 674         .num_dapm_routes = ARRAY_SIZE(ssm260x_routes),
 675 };
 676
 677 static bool ssm2602_register_volatile(struct device *dev, unsigned int reg)
 678 {
 679         return reg == SSM2602_RESET;
 680 }
 681
 682 static const struct regmap_config ssm2602_regmap_config = {
 683         .val_bits = 9,
 684         .reg_bits = 7,
 685
 686         .max_register = SSM2602_RESET,
 687         .volatile_reg = ssm2602_register_volatile,
 688
 689         .cache_type = REGCACHE_RBTREE,
 690         .reg_defaults_raw = ssm2602_reg,
 691         .num_reg_defaults_raw = ARRAY_SIZE(ssm2602_reg),
 692 };
 693
 694 #if defined(CONFIG_SPI_MASTER)
 695 static int ssm2602_spi_probe(struct spi_device *spi)
 696 {
 697         struct ssm2602_priv *ssm2602;
 698         int ret;
 699
 700         ssm2602 = devm_kzalloc(&spi->dev, sizeof(struct ssm2602_priv),
 701                                GFP_KERNEL);
 702         if (ssm2602 == NULL)
 703                 return -ENOMEM;
 704
 705         spi_set_drvdata(spi, ssm2602);
 706         ssm2602->type = SSM2602;
 707
 708         ssm2602->regmap = devm_regmap_init_spi(spi, &ssm2602_regmap_config);
 709         if (IS_ERR(ssm2602->regmap))
 710                 return PTR_ERR(ssm2602->regmap);
 711
 712         ret = snd_soc_register_codec(&spi->dev,
 713                         &soc_codec_dev_ssm2602, &ssm2602_dai, 1);
 714         return ret;
 715 }
 716
 717 static int ssm2602_spi_remove(struct spi_device *spi)
 718 {
 719         snd_soc_unregister_codec(&spi->dev);
 720         return 0;
 721 }
 722
 723 static struct spi_driver ssm2602_spi_driver = {
 724         .driver = {
 725                 .name   = "ssm2602",
 726                 .owner  = THIS_MODULE,
 727         },
 728         .probe          = ssm2602_spi_probe,
 729         .remove         = ssm2602_spi_remove,
 730 };
 731 #endif
 732
 733 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 734 /*
 735  * ssm2602 2 wire address is determined by GPIO5
 736  * state during powerup.
 737  *    low  = 0x1a
 738  *    high = 0x1b
 739  */
 740 static int ssm2602_i2c_probe(struct i2c_client *i2c,
 741                              const struct i2c_device_id *id)
 742 {
 743         struct ssm2602_priv *ssm2602;
 744         int ret;
 745
 746         ssm2602 = devm_kzalloc(&i2c->dev, sizeof(struct ssm2602_priv),
 747                                GFP_KERNEL);
 748         if (ssm2602 == NULL)
 749                 return -ENOMEM;
 750
 751         i2c_set_clientdata(i2c, ssm2602);
 752         ssm2602->type = id->driver_data;
 753
 754         ssm2602->regmap = devm_regmap_init_i2c(i2c, &ssm2602_regmap_config);
 755         if (IS_ERR(ssm2602->regmap))
 756                 return PTR_ERR(ssm2602->regmap);
 757
 758         ret = snd_soc_register_codec(&i2c->dev,
 759                         &soc_codec_dev_ssm2602, &ssm2602_dai, 1);
 760         return ret;
 761 }
 762
 763 static int ssm2602_i2c_remove(struct i2c_client *client)
 764 {
 765         snd_soc_unregister_codec(&client->dev);
 766         return 0;
 767 }
 768
 769 static const struct i2c_device_id ssm2602_i2c_id[] = {
 770         { "ssm2602", SSM2602 },
 771         { "ssm2603", SSM2602 },
 772         { "ssm2604", SSM2604 },
 773         { }
 774 };
 775 MODULE_DEVICE_TABLE(i2c, ssm2602_i2c_id);
 776
 777 /* corgi i2c codec control layer */
 778 static struct i2c_driver ssm2602_i2c_driver = {
 779         .driver = {
 780                 .name = "ssm2602",
 781                 .owner = THIS_MODULE,
 782         },
 783         .probe = ssm2602_i2c_probe,
 784         .remove = ssm2602_i2c_remove,
 785         .id_table = ssm2602_i2c_id,
 786 };
 787 #endif
 788
 789
 790 static int __init ssm2602_modinit(void)
 791 {
 792         int ret = 0;
 793
 794 #if defined(CONFIG_SPI_MASTER)
 795         ret = spi_register_driver(&ssm2602_spi_driver);
 796         if (ret)
 797                 return ret;
 798 #endif
 799
 800 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 801         ret = i2c_add_driver(&ssm2602_i2c_driver);
 802         if (ret)
 803                 return ret;
 804 #endif
 805
 806         return ret;
 807 }
 808 module_init(ssm2602_modinit);
 809
 810 static void __exit ssm2602_exit(void)
 811 {
 812 #if defined(CONFIG_SPI_MASTER)
 813         spi_unregister_driver(&ssm2602_spi_driver);
 814 #endif
 815
 816 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 817         i2c_del_driver(&ssm2602_i2c_driver);
 818 #endif
 819 }
 820 module_exit(ssm2602_exit);
 821
 822 MODULE_DESCRIPTION("ASoC SSM2602/SSM2603/SSM2604 driver");
 823 MODULE_AUTHOR("Cliff Cai");
 824 MODULE_LICENSE("GPL");