1 /* 2 * Copyright (C) 2011 LAPIS Semiconductor Co., Ltd. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; version 2 of the License. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program; if not, write to the Free Software 15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. 16 */ 17 18 #include <linux/module.h> 19 #include <linux/moduleparam.h> 20 #include <linux/init.h> 21 #include <linux/delay.h> 22 #include <linux/pm.h> 23 #include <linux/i2c.h> 24 #include <linux/slab.h> 25 #include <linux/platform_device.h> 26 #include <linux/regmap.h> 27 #include <sound/core.h> 28 #include <sound/pcm.h> 29 #include <sound/pcm_params.h> 30 #include <sound/soc.h> 31 #include <sound/tlv.h> 32 #include "ml26124.h" 33 34 #define DVOL_CTL_DVMUTE_ON BIT(4) /* Digital volume MUTE On */ 35 #define DVOL_CTL_DVMUTE_OFF 0 /* Digital volume MUTE Off */ 36 #define ML26124_SAI_NO_DELAY BIT(1) 37 #define ML26124_SAI_FRAME_SYNC (BIT(5) | BIT(0)) /* For mono (Telecodec) */ 38 #define ML26134_CACHESIZE 212 39 #define ML26124_VMID BIT(1) 40 #define ML26124_RATES (SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_32000 |\ 41 SNDRV_PCM_RATE_48000) 42 #define ML26124_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |\ 43 SNDRV_PCM_FMTBIT_S32_LE) 44 #define ML26124_NUM_REGISTER ML26134_CACHESIZE 45 46 struct ml26124_priv { 47 u32 mclk; 48 u32 rate; 49 struct regmap *regmap; 50 int clk_in; 51 struct snd_pcm_substream *substream; 52 }; 53 54 struct clk_coeff { 55 u32 mclk; 56 u32 rate; 57 u8 pllnl; 58 u8 pllnh; 59 u8 pllml; 60 u8 pllmh; 61 u8 plldiv; 62 }; 63 64 /* ML26124 configuration */ 65 static const DECLARE_TLV_DB_SCALE(digital_tlv, -7150, 50, 0); 66 67 static const DECLARE_TLV_DB_SCALE(alclvl, -2250, 150, 0); 68 static const DECLARE_TLV_DB_SCALE(mingain, -1200, 600, 0); 69 static const DECLARE_TLV_DB_SCALE(maxgain, -675, 600, 0); 70 static const DECLARE_TLV_DB_SCALE(boost_vol, -1200, 75, 0); 71 static const DECLARE_TLV_DB_SCALE(ngth, -7650, 150, 0); 72 73 static const char * const ml26124_companding[] = {"16bit PCM", "u-law", 74 "A-law"}; 75 76 static SOC_ENUM_SINGLE_DECL(ml26124_adc_companding_enum, 77 ML26124_SAI_TRANS_CTL, 6, ml26124_companding); 78 79 static SOC_ENUM_SINGLE_DECL(ml26124_dac_companding_enum, 80 ML26124_SAI_RCV_CTL, 6, ml26124_companding); 81 82 static const struct snd_kcontrol_new ml26124_snd_controls[] = { 83 SOC_SINGLE_TLV("Capture Digital Volume", ML26124_RECORD_DIG_VOL, 0, 84 0xff, 1, digital_tlv), 85 SOC_SINGLE_TLV("Playback Digital Volume", ML26124_PLBAK_DIG_VOL, 0, 86 0xff, 1, digital_tlv), 87 SOC_SINGLE_TLV("Digital Boost Volume", ML26124_DIGI_BOOST_VOL, 0, 88 0x3f, 0, boost_vol), 89 SOC_SINGLE_TLV("EQ Band0 Volume", ML26124_EQ_GAIN_BRAND0, 0, 90 0xff, 1, digital_tlv), 91 SOC_SINGLE_TLV("EQ Band1 Volume", ML26124_EQ_GAIN_BRAND1, 0, 92 0xff, 1, digital_tlv), 93 SOC_SINGLE_TLV("EQ Band2 Volume", ML26124_EQ_GAIN_BRAND2, 0, 94 0xff, 1, digital_tlv), 95 SOC_SINGLE_TLV("EQ Band3 Volume", ML26124_EQ_GAIN_BRAND3, 0, 96 0xff, 1, digital_tlv), 97 SOC_SINGLE_TLV("EQ Band4 Volume", ML26124_EQ_GAIN_BRAND4, 0, 98 0xff, 1, digital_tlv), 99 SOC_SINGLE_TLV("ALC Target Level", ML26124_ALC_TARGET_LEV, 0, 100 0xf, 1, alclvl), 101 SOC_SINGLE_TLV("ALC Min Input Volume", ML26124_ALC_MAXMIN_GAIN, 0, 102 7, 0, mingain), 103 SOC_SINGLE_TLV("ALC Max Input Volume", ML26124_ALC_MAXMIN_GAIN, 4, 104 7, 1, maxgain), 105 SOC_SINGLE_TLV("Playback Limiter Min Input Volume", 106 ML26124_PL_MAXMIN_GAIN, 0, 7, 0, mingain), 107 SOC_SINGLE_TLV("Playback Limiter Max Input Volume", 108 ML26124_PL_MAXMIN_GAIN, 4, 7, 1, maxgain), 109 SOC_SINGLE_TLV("Playback Boost Volume", ML26124_PLYBAK_BOST_VOL, 0, 110 0x3f, 0, boost_vol), 111 SOC_SINGLE("DC High Pass Filter Switch", ML26124_FILTER_EN, 0, 1, 0), 112 SOC_SINGLE("Noise High Pass Filter Switch", ML26124_FILTER_EN, 1, 1, 0), 113 SOC_SINGLE("ZC Switch", ML26124_PW_ZCCMP_PW_MNG, 1, 114 1, 0), 115 SOC_SINGLE("EQ Band0 Switch", ML26124_FILTER_EN, 2, 1, 0), 116 SOC_SINGLE("EQ Band1 Switch", ML26124_FILTER_EN, 3, 1, 0), 117 SOC_SINGLE("EQ Band2 Switch", ML26124_FILTER_EN, 4, 1, 0), 118 SOC_SINGLE("EQ Band3 Switch", ML26124_FILTER_EN, 5, 1, 0), 119 SOC_SINGLE("EQ Band4 Switch", ML26124_FILTER_EN, 6, 1, 0), 120 SOC_SINGLE("Play Limiter", ML26124_DVOL_CTL, 0, 1, 0), 121 SOC_SINGLE("Capture Limiter", ML26124_DVOL_CTL, 1, 1, 0), 122 SOC_SINGLE("Digital Volume Fade Switch", ML26124_DVOL_CTL, 3, 1, 0), 123 SOC_SINGLE("Digital Switch", ML26124_DVOL_CTL, 4, 1, 0), 124 SOC_ENUM("DAC Companding", ml26124_dac_companding_enum), 125 SOC_ENUM("ADC Companding", ml26124_adc_companding_enum), 126 }; 127 128 static const struct snd_kcontrol_new ml26124_output_mixer_controls[] = { 129 SOC_DAPM_SINGLE("DAC Switch", ML26124_SPK_AMP_OUT, 1, 1, 0), 130 SOC_DAPM_SINGLE("Line in loopback Switch", ML26124_SPK_AMP_OUT, 3, 1, 131 0), 132 SOC_DAPM_SINGLE("PGA Switch", ML26124_SPK_AMP_OUT, 5, 1, 0), 133 }; 134 135 /* Input mux */ 136 static const char * const ml26124_input_select[] = {"Analog MIC SingleEnded in", 137 "Digital MIC in", "Analog MIC Differential in"}; 138 139 static SOC_ENUM_SINGLE_DECL(ml26124_insel_enum, 140 ML26124_MIC_IF_CTL, 0, ml26124_input_select); 141 142 static const struct snd_kcontrol_new ml26124_input_mux_controls = 143 SOC_DAPM_ENUM("Input Select", ml26124_insel_enum); 144 145 static const struct snd_kcontrol_new ml26124_line_control = 146 SOC_DAPM_SINGLE("Switch", ML26124_PW_LOUT_PW_MNG, 1, 1, 0); 147 148 static const struct snd_soc_dapm_widget ml26124_dapm_widgets[] = { 149 SND_SOC_DAPM_SUPPLY("MCLKEN", ML26124_CLK_EN, 0, 0, NULL, 0), 150 SND_SOC_DAPM_SUPPLY("PLLEN", ML26124_CLK_EN, 1, 0, NULL, 0), 151 SND_SOC_DAPM_SUPPLY("PLLOE", ML26124_CLK_EN, 2, 0, NULL, 0), 152 SND_SOC_DAPM_SUPPLY("MICBIAS", ML26124_PW_REF_PW_MNG, 2, 0, NULL, 0), 153 SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0, 154 &ml26124_output_mixer_controls[0], 155 ARRAY_SIZE(ml26124_output_mixer_controls)), 156 SND_SOC_DAPM_DAC("DAC", "Playback", ML26124_PW_DAC_PW_MNG, 1, 0), 157 SND_SOC_DAPM_ADC("ADC", "Capture", ML26124_PW_IN_PW_MNG, 1, 0), 158 SND_SOC_DAPM_PGA("PGA", ML26124_PW_IN_PW_MNG, 3, 0, NULL, 0), 159 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, 160 &ml26124_input_mux_controls), 161 SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0, 162 &ml26124_line_control), 163 SND_SOC_DAPM_INPUT("MDIN"), 164 SND_SOC_DAPM_INPUT("MIN"), 165 SND_SOC_DAPM_INPUT("LIN"), 166 SND_SOC_DAPM_OUTPUT("SPOUT"), 167 SND_SOC_DAPM_OUTPUT("LOUT"), 168 }; 169 170 static const struct snd_soc_dapm_route ml26124_intercon[] = { 171 /* Supply */ 172 {"DAC", NULL, "MCLKEN"}, 173 {"ADC", NULL, "MCLKEN"}, 174 {"DAC", NULL, "PLLEN"}, 175 {"ADC", NULL, "PLLEN"}, 176 {"DAC", NULL, "PLLOE"}, 177 {"ADC", NULL, "PLLOE"}, 178 179 /* output mixer */ 180 {"Output Mixer", "DAC Switch", "DAC"}, 181 {"Output Mixer", "Line in loopback Switch", "LIN"}, 182 183 /* outputs */ 184 {"LOUT", NULL, "Output Mixer"}, 185 {"SPOUT", NULL, "Output Mixer"}, 186 {"Line Out Enable", NULL, "LOUT"}, 187 188 /* input */ 189 {"ADC", NULL, "Input Mux"}, 190 {"Input Mux", "Analog MIC SingleEnded in", "PGA"}, 191 {"Input Mux", "Analog MIC Differential in", "PGA"}, 192 {"PGA", NULL, "MIN"}, 193 }; 194 195 /* PLLOutputFreq(Hz) = InputMclkFreq(Hz) * PLLM / (PLLN * PLLDIV) */ 196 static const struct clk_coeff coeff_div[] = { 197 {12288000, 16000, 0xc, 0x0, 0x20, 0x0, 0x4}, 198 {12288000, 32000, 0xc, 0x0, 0x20, 0x0, 0x4}, 199 {12288000, 48000, 0xc, 0x0, 0x30, 0x0, 0x4}, 200 }; 201 202 static const struct reg_default ml26124_reg[] = { 203 /* CLOCK control Register */ 204 {0x00, 0x00 }, /* Sampling Rate */ 205 {0x02, 0x00}, /* PLL NL */ 206 {0x04, 0x00}, /* PLLNH */ 207 {0x06, 0x00}, /* PLLML */ 208 {0x08, 0x00}, /* MLLMH */ 209 {0x0a, 0x00}, /* PLLDIV */ 210 {0x0c, 0x00}, /* Clock Enable */ 211 {0x0e, 0x00}, /* CLK Input/Output Control */ 212 213 /* System Control Register */ 214 {0x10, 0x00}, /* Software RESET */ 215 {0x12, 0x00}, /* Record/Playback Run */ 216 {0x14, 0x00}, /* Mic Input/Output control */ 217 218 /* Power Management Register */ 219 {0x20, 0x00}, /* Reference Power Management */ 220 {0x22, 0x00}, /* Input Power Management */ 221 {0x24, 0x00}, /* DAC Power Management */ 222 {0x26, 0x00}, /* SP-AMP Power Management */ 223 {0x28, 0x00}, /* LINEOUT Power Management */ 224 {0x2a, 0x00}, /* VIDEO Power Management */ 225 {0x2e, 0x00}, /* AC-CMP Power Management */ 226 227 /* Analog reference Control Register */ 228 {0x30, 0x04}, /* MICBIAS Voltage Control */ 229 230 /* Input/Output Amplifier Control Register */ 231 {0x32, 0x10}, /* MIC Input Volume */ 232 {0x38, 0x00}, /* Mic Boost Volume */ 233 {0x3a, 0x33}, /* Speaker AMP Volume */ 234 {0x48, 0x00}, /* AMP Volume Control Function Enable */ 235 {0x4a, 0x00}, /* Amplifier Volume Fader Control */ 236 237 /* Analog Path Control Register */ 238 {0x54, 0x00}, /* Speaker AMP Output Control */ 239 {0x5a, 0x00}, /* Mic IF Control */ 240 {0xe8, 0x01}, /* Mic Select Control */ 241 242 /* Audio Interface Control Register */ 243 {0x60, 0x00}, /* SAI-Trans Control */ 244 {0x62, 0x00}, /* SAI-Receive Control */ 245 {0x64, 0x00}, /* SAI Mode select */ 246 247 /* DSP Control Register */ 248 {0x66, 0x01}, /* Filter Func Enable */ 249 {0x68, 0x00}, /* Volume Control Func Enable */ 250 {0x6A, 0x00}, /* Mixer & Volume Control*/ 251 {0x6C, 0xff}, /* Record Digital Volume */ 252 {0x70, 0xff}, /* Playback Digital Volume */ 253 {0x72, 0x10}, /* Digital Boost Volume */ 254 {0x74, 0xe7}, /* EQ gain Band0 */ 255 {0x76, 0xe7}, /* EQ gain Band1 */ 256 {0x78, 0xe7}, /* EQ gain Band2 */ 257 {0x7A, 0xe7}, /* EQ gain Band3 */ 258 {0x7C, 0xe7}, /* EQ gain Band4 */ 259 {0x7E, 0x00}, /* HPF2 CutOff*/ 260 {0x80, 0x00}, /* EQ Band0 Coef0L */ 261 {0x82, 0x00}, /* EQ Band0 Coef0H */ 262 {0x84, 0x00}, /* EQ Band0 Coef0L */ 263 {0x86, 0x00}, /* EQ Band0 Coef0H */ 264 {0x88, 0x00}, /* EQ Band1 Coef0L */ 265 {0x8A, 0x00}, /* EQ Band1 Coef0H */ 266 {0x8C, 0x00}, /* EQ Band1 Coef0L */ 267 {0x8E, 0x00}, /* EQ Band1 Coef0H */ 268 {0x90, 0x00}, /* EQ Band2 Coef0L */ 269 {0x92, 0x00}, /* EQ Band2 Coef0H */ 270 {0x94, 0x00}, /* EQ Band2 Coef0L */ 271 {0x96, 0x00}, /* EQ Band2 Coef0H */ 272 {0x98, 0x00}, /* EQ Band3 Coef0L */ 273 {0x9A, 0x00}, /* EQ Band3 Coef0H */ 274 {0x9C, 0x00}, /* EQ Band3 Coef0L */ 275 {0x9E, 0x00}, /* EQ Band3 Coef0H */ 276 {0xA0, 0x00}, /* EQ Band4 Coef0L */ 277 {0xA2, 0x00}, /* EQ Band4 Coef0H */ 278 {0xA4, 0x00}, /* EQ Band4 Coef0L */ 279 {0xA6, 0x00}, /* EQ Band4 Coef0H */ 280 281 /* ALC Control Register */ 282 {0xb0, 0x00}, /* ALC Mode */ 283 {0xb2, 0x02}, /* ALC Attack Time */ 284 {0xb4, 0x03}, /* ALC Decay Time */ 285 {0xb6, 0x00}, /* ALC Hold Time */ 286 {0xb8, 0x0b}, /* ALC Target Level */ 287 {0xba, 0x70}, /* ALC Max/Min Gain */ 288 {0xbc, 0x00}, /* Noise Gate Threshold */ 289 {0xbe, 0x00}, /* ALC ZeroCross TimeOut */ 290 291 /* Playback Limiter Control Register */ 292 {0xc0, 0x04}, /* PL Attack Time */ 293 {0xc2, 0x05}, /* PL Decay Time */ 294 {0xc4, 0x0d}, /* PL Target Level */ 295 {0xc6, 0x70}, /* PL Max/Min Gain */ 296 {0xc8, 0x10}, /* Playback Boost Volume */ 297 {0xca, 0x00}, /* PL ZeroCross TimeOut */ 298 299 /* Video Amplifier Control Register */ 300 {0xd0, 0x01}, /* VIDEO AMP Gain Control */ 301 {0xd2, 0x01}, /* VIDEO AMP Setup 1 */ 302 {0xd4, 0x01}, /* VIDEO AMP Control2 */ 303 }; 304 305 /* Get sampling rate value of sampling rate setting register (0x0) */ 306 static inline int get_srate(int rate) 307 { 308 int srate; 309 310 switch (rate) { 311 case 16000: 312 srate = 3; 313 break; 314 case 32000: 315 srate = 6; 316 break; 317 case 48000: 318 srate = 8; 319 break; 320 default: 321 return -EINVAL; 322 } 323 return srate; 324 } 325 326 static inline int get_coeff(int mclk, int rate) 327 { 328 int i; 329 330 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { 331 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) 332 return i; 333 } 334 return -EINVAL; 335 } 336 337 static int ml26124_hw_params(struct snd_pcm_substream *substream, 338 struct snd_pcm_hw_params *hw_params, 339 struct snd_soc_dai *dai) 340 { 341 struct snd_soc_codec *codec = dai->codec; 342 struct ml26124_priv *priv = snd_soc_codec_get_drvdata(codec); 343 int i = get_coeff(priv->mclk, params_rate(hw_params)); 344 int srate; 345 346 if (i < 0) 347 return i; 348 priv->substream = substream; 349 priv->rate = params_rate(hw_params); 350 351 if (priv->clk_in) { 352 switch (priv->mclk / params_rate(hw_params)) { 353 case 256: 354 snd_soc_update_bits(codec, ML26124_CLK_CTL, 355 BIT(0) | BIT(1), 1); 356 break; 357 case 512: 358 snd_soc_update_bits(codec, ML26124_CLK_CTL, 359 BIT(0) | BIT(1), 2); 360 break; 361 case 1024: 362 snd_soc_update_bits(codec, ML26124_CLK_CTL, 363 BIT(0) | BIT(1), 3); 364 break; 365 default: 366 dev_err(codec->dev, "Unsupported MCLKI\n"); 367 break; 368 } 369 } else { 370 snd_soc_update_bits(codec, ML26124_CLK_CTL, 371 BIT(0) | BIT(1), 0); 372 } 373 374 srate = get_srate(params_rate(hw_params)); 375 if (srate < 0) 376 return srate; 377 378 snd_soc_update_bits(codec, ML26124_SMPLING_RATE, 0xf, srate); 379 snd_soc_update_bits(codec, ML26124_PLLNL, 0xff, coeff_div[i].pllnl); 380 snd_soc_update_bits(codec, ML26124_PLLNH, 0x1, coeff_div[i].pllnh); 381 snd_soc_update_bits(codec, ML26124_PLLML, 0xff, coeff_div[i].pllml); 382 snd_soc_update_bits(codec, ML26124_PLLMH, 0x3f, coeff_div[i].pllmh); 383 snd_soc_update_bits(codec, ML26124_PLLDIV, 0x1f, coeff_div[i].plldiv); 384 385 return 0; 386 } 387 388 static int ml26124_mute(struct snd_soc_dai *dai, int mute) 389 { 390 struct snd_soc_codec *codec = dai->codec; 391 struct ml26124_priv *priv = snd_soc_codec_get_drvdata(codec); 392 393 switch (priv->substream->stream) { 394 case SNDRV_PCM_STREAM_CAPTURE: 395 snd_soc_update_bits(codec, ML26124_REC_PLYBAK_RUN, BIT(0), 1); 396 break; 397 case SNDRV_PCM_STREAM_PLAYBACK: 398 snd_soc_update_bits(codec, ML26124_REC_PLYBAK_RUN, BIT(1), 2); 399 break; 400 } 401 402 if (mute) 403 snd_soc_update_bits(codec, ML26124_DVOL_CTL, BIT(4), 404 DVOL_CTL_DVMUTE_ON); 405 else 406 snd_soc_update_bits(codec, ML26124_DVOL_CTL, BIT(4), 407 DVOL_CTL_DVMUTE_OFF); 408 409 return 0; 410 } 411 412 static int ml26124_set_dai_fmt(struct snd_soc_dai *codec_dai, 413 unsigned int fmt) 414 { 415 unsigned char mode; 416 struct snd_soc_codec *codec = codec_dai->codec; 417 418 /* set master/slave audio interface */ 419 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 420 case SND_SOC_DAIFMT_CBM_CFM: 421 mode = 1; 422 break; 423 case SND_SOC_DAIFMT_CBS_CFS: 424 mode = 0; 425 break; 426 default: 427 return -EINVAL; 428 } 429 snd_soc_update_bits(codec, ML26124_SAI_MODE_SEL, BIT(0), mode); 430 431 /* interface format */ 432 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 433 case SND_SOC_DAIFMT_I2S: 434 break; 435 default: 436 return -EINVAL; 437 } 438 439 /* clock inversion */ 440 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 441 case SND_SOC_DAIFMT_NB_NF: 442 break; 443 default: 444 return -EINVAL; 445 } 446 447 return 0; 448 } 449 450 static int ml26124_set_dai_sysclk(struct snd_soc_dai *codec_dai, 451 int clk_id, unsigned int freq, int dir) 452 { 453 struct snd_soc_codec *codec = codec_dai->codec; 454 struct ml26124_priv *priv = snd_soc_codec_get_drvdata(codec); 455 456 switch (clk_id) { 457 case ML26124_USE_PLLOUT: 458 priv->clk_in = ML26124_USE_PLLOUT; 459 break; 460 case ML26124_USE_MCLKI: 461 priv->clk_in = ML26124_USE_MCLKI; 462 break; 463 default: 464 return -EINVAL; 465 } 466 467 priv->mclk = freq; 468 469 return 0; 470 } 471 472 static int ml26124_set_bias_level(struct snd_soc_codec *codec, 473 enum snd_soc_bias_level level) 474 { 475 struct ml26124_priv *priv = snd_soc_codec_get_drvdata(codec); 476 477 switch (level) { 478 case SND_SOC_BIAS_ON: 479 snd_soc_update_bits(codec, ML26124_PW_SPAMP_PW_MNG, 480 ML26124_R26_MASK, ML26124_BLT_PREAMP_ON); 481 msleep(100); 482 snd_soc_update_bits(codec, ML26124_PW_SPAMP_PW_MNG, 483 ML26124_R26_MASK, 484 ML26124_MICBEN_ON | ML26124_BLT_ALL_ON); 485 break; 486 case SND_SOC_BIAS_PREPARE: 487 break; 488 case SND_SOC_BIAS_STANDBY: 489 /* VMID ON */ 490 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) { 491 snd_soc_update_bits(codec, ML26124_PW_REF_PW_MNG, 492 ML26124_VMID, ML26124_VMID); 493 msleep(500); 494 regcache_sync(priv->regmap); 495 } 496 break; 497 case SND_SOC_BIAS_OFF: 498 /* VMID OFF */ 499 snd_soc_update_bits(codec, ML26124_PW_REF_PW_MNG, 500 ML26124_VMID, 0); 501 break; 502 } 503 return 0; 504 } 505 506 static const struct snd_soc_dai_ops ml26124_dai_ops = { 507 .hw_params = ml26124_hw_params, 508 .digital_mute = ml26124_mute, 509 .set_fmt = ml26124_set_dai_fmt, 510 .set_sysclk = ml26124_set_dai_sysclk, 511 }; 512 513 static struct snd_soc_dai_driver ml26124_dai = { 514 .name = "ml26124-hifi", 515 .playback = { 516 .stream_name = "Playback", 517 .channels_min = 1, 518 .channels_max = 2, 519 .rates = ML26124_RATES, 520 .formats = ML26124_FORMATS,}, 521 .capture = { 522 .stream_name = "Capture", 523 .channels_min = 1, 524 .channels_max = 2, 525 .rates = ML26124_RATES, 526 .formats = ML26124_FORMATS,}, 527 .ops = &ml26124_dai_ops, 528 .symmetric_rates = 1, 529 }; 530 531 static int ml26124_probe(struct snd_soc_codec *codec) 532 { 533 /* Software Reset */ 534 snd_soc_update_bits(codec, ML26124_SW_RST, 0x01, 1); 535 snd_soc_update_bits(codec, ML26124_SW_RST, 0x01, 0); 536 537 return 0; 538 } 539 540 static struct snd_soc_codec_driver soc_codec_dev_ml26124 = { 541 .probe = ml26124_probe, 542 .set_bias_level = ml26124_set_bias_level, 543 .suspend_bias_off = true, 544 .dapm_widgets = ml26124_dapm_widgets, 545 .num_dapm_widgets = ARRAY_SIZE(ml26124_dapm_widgets), 546 .dapm_routes = ml26124_intercon, 547 .num_dapm_routes = ARRAY_SIZE(ml26124_intercon), 548 .controls = ml26124_snd_controls, 549 .num_controls = ARRAY_SIZE(ml26124_snd_controls), 550 }; 551 552 static const struct regmap_config ml26124_i2c_regmap = { 553 .val_bits = 8, 554 .reg_bits = 8, 555 .max_register = ML26124_NUM_REGISTER, 556 .reg_defaults = ml26124_reg, 557 .num_reg_defaults = ARRAY_SIZE(ml26124_reg), 558 .cache_type = REGCACHE_RBTREE, 559 .write_flag_mask = 0x01, 560 }; 561 562 static int ml26124_i2c_probe(struct i2c_client *i2c, 563 const struct i2c_device_id *id) 564 { 565 struct ml26124_priv *priv; 566 int ret; 567 568 priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL); 569 if (!priv) 570 return -ENOMEM; 571 572 i2c_set_clientdata(i2c, priv); 573 574 priv->regmap = devm_regmap_init_i2c(i2c, &ml26124_i2c_regmap); 575 if (IS_ERR(priv->regmap)) { 576 ret = PTR_ERR(priv->regmap); 577 dev_err(&i2c->dev, "regmap_init_i2c() failed: %d\n", ret); 578 return ret; 579 } 580 581 return snd_soc_register_codec(&i2c->dev, 582 &soc_codec_dev_ml26124, &ml26124_dai, 1); 583 } 584 585 static int ml26124_i2c_remove(struct i2c_client *client) 586 { 587 snd_soc_unregister_codec(&client->dev); 588 return 0; 589 } 590 591 static const struct i2c_device_id ml26124_i2c_id[] = { 592 { "ml26124", 0 }, 593 { } 594 }; 595 MODULE_DEVICE_TABLE(i2c, ml26124_i2c_id); 596 597 static struct i2c_driver ml26124_i2c_driver = { 598 .driver = { 599 .name = "ml26124", 600 }, 601 .probe = ml26124_i2c_probe, 602 .remove = ml26124_i2c_remove, 603 .id_table = ml26124_i2c_id, 604 }; 605 606 module_i2c_driver(ml26124_i2c_driver); 607 608 MODULE_AUTHOR("Tomoya MORINAGA <tomoya.rohm@gmail.com>"); 609 MODULE_DESCRIPTION("LAPIS Semiconductor ML26124 ALSA SoC codec driver"); 610 MODULE_LICENSE("GPL"); 611