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 const struct soc_enum ml26124_adc_companding_enum 77 = SOC_ENUM_SINGLE(ML26124_SAI_TRANS_CTL, 6, 3, ml26124_companding); 78 79 static const struct soc_enum ml26124_dac_companding_enum 80 = SOC_ENUM_SINGLE(ML26124_SAI_RCV_CTL, 6, 3, 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 const struct soc_enum ml26124_insel_enum = 140 SOC_ENUM_SINGLE(ML26124_MIC_IF_CTL, 0, 3, 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 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)); 344 345 priv->substream = substream; 346 priv->rate = params_rate(hw_params); 347 348 if (priv->clk_in) { 349 switch (priv->mclk / params_rate(hw_params)) { 350 case 256: 351 snd_soc_update_bits(codec, ML26124_CLK_CTL, 352 BIT(0) | BIT(1), 1); 353 break; 354 case 512: 355 snd_soc_update_bits(codec, ML26124_CLK_CTL, 356 BIT(0) | BIT(1), 2); 357 break; 358 case 1024: 359 snd_soc_update_bits(codec, ML26124_CLK_CTL, 360 BIT(0) | BIT(1), 3); 361 break; 362 default: 363 dev_err(codec->dev, "Unsupported MCLKI\n"); 364 break; 365 } 366 } else { 367 snd_soc_update_bits(codec, ML26124_CLK_CTL, 368 BIT(0) | BIT(1), 0); 369 } 370 371 switch (params_rate(hw_params)) { 372 case 16000: 373 snd_soc_update_bits(codec, ML26124_SMPLING_RATE, 0xf, 374 get_srate(params_rate(hw_params))); 375 snd_soc_update_bits(codec, ML26124_PLLNL, 0xff, 376 coeff_div[i].pllnl); 377 snd_soc_update_bits(codec, ML26124_PLLNH, 0x1, 378 coeff_div[i].pllnh); 379 snd_soc_update_bits(codec, ML26124_PLLML, 0xff, 380 coeff_div[i].pllml); 381 snd_soc_update_bits(codec, ML26124_PLLMH, 0x3f, 382 coeff_div[i].pllmh); 383 snd_soc_update_bits(codec, ML26124_PLLDIV, 0x1f, 384 coeff_div[i].plldiv); 385 break; 386 case 32000: 387 snd_soc_update_bits(codec, ML26124_SMPLING_RATE, 0xf, 388 get_srate(params_rate(hw_params))); 389 snd_soc_update_bits(codec, ML26124_PLLNL, 0xff, 390 coeff_div[i].pllnl); 391 snd_soc_update_bits(codec, ML26124_PLLNH, 0x1, 392 coeff_div[i].pllnh); 393 snd_soc_update_bits(codec, ML26124_PLLML, 0xff, 394 coeff_div[i].pllml); 395 snd_soc_update_bits(codec, ML26124_PLLMH, 0x3f, 396 coeff_div[i].pllmh); 397 snd_soc_update_bits(codec, ML26124_PLLDIV, 0x1f, 398 coeff_div[i].plldiv); 399 break; 400 case 48000: 401 snd_soc_update_bits(codec, ML26124_SMPLING_RATE, 0xf, 402 get_srate(params_rate(hw_params))); 403 snd_soc_update_bits(codec, ML26124_PLLNL, 0xff, 404 coeff_div[i].pllnl); 405 snd_soc_update_bits(codec, ML26124_PLLNH, 0x1, 406 coeff_div[i].pllnh); 407 snd_soc_update_bits(codec, ML26124_PLLML, 0xff, 408 coeff_div[i].pllml); 409 snd_soc_update_bits(codec, ML26124_PLLMH, 0x3f, 410 coeff_div[i].pllmh); 411 snd_soc_update_bits(codec, ML26124_PLLDIV, 0x1f, 412 coeff_div[i].plldiv); 413 break; 414 default: 415 pr_err("%s:this rate is no support for ml26124\n", __func__); 416 return -EINVAL; 417 } 418 419 return 0; 420 } 421 422 static int ml26124_mute(struct snd_soc_dai *dai, int mute) 423 { 424 struct snd_soc_codec *codec = dai->codec; 425 struct ml26124_priv *priv = snd_soc_codec_get_drvdata(codec); 426 427 switch (priv->substream->stream) { 428 case SNDRV_PCM_STREAM_CAPTURE: 429 snd_soc_update_bits(codec, ML26124_REC_PLYBAK_RUN, BIT(0), 1); 430 break; 431 case SNDRV_PCM_STREAM_PLAYBACK: 432 snd_soc_update_bits(codec, ML26124_REC_PLYBAK_RUN, BIT(1), 2); 433 break; 434 } 435 436 if (mute) 437 snd_soc_update_bits(codec, ML26124_DVOL_CTL, BIT(4), 438 DVOL_CTL_DVMUTE_ON); 439 else 440 snd_soc_update_bits(codec, ML26124_DVOL_CTL, BIT(4), 441 DVOL_CTL_DVMUTE_OFF); 442 443 return 0; 444 } 445 446 static int ml26124_set_dai_fmt(struct snd_soc_dai *codec_dai, 447 unsigned int fmt) 448 { 449 unsigned char mode; 450 struct snd_soc_codec *codec = codec_dai->codec; 451 452 /* set master/slave audio interface */ 453 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 454 case SND_SOC_DAIFMT_CBM_CFM: 455 mode = 1; 456 break; 457 case SND_SOC_DAIFMT_CBS_CFS: 458 mode = 0; 459 break; 460 default: 461 return -EINVAL; 462 } 463 snd_soc_update_bits(codec, ML26124_SAI_MODE_SEL, BIT(0), mode); 464 465 /* interface format */ 466 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 467 case SND_SOC_DAIFMT_I2S: 468 break; 469 default: 470 return -EINVAL; 471 } 472 473 /* clock inversion */ 474 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 475 case SND_SOC_DAIFMT_NB_NF: 476 break; 477 default: 478 return -EINVAL; 479 } 480 481 return 0; 482 } 483 484 static int ml26124_set_dai_sysclk(struct snd_soc_dai *codec_dai, 485 int clk_id, unsigned int freq, int dir) 486 { 487 struct snd_soc_codec *codec = codec_dai->codec; 488 struct ml26124_priv *priv = snd_soc_codec_get_drvdata(codec); 489 490 switch (clk_id) { 491 case ML26124_USE_PLLOUT: 492 priv->clk_in = ML26124_USE_PLLOUT; 493 break; 494 case ML26124_USE_MCLKI: 495 priv->clk_in = ML26124_USE_MCLKI; 496 break; 497 default: 498 return -EINVAL; 499 } 500 501 priv->mclk = freq; 502 503 return 0; 504 } 505 506 static int ml26124_set_bias_level(struct snd_soc_codec *codec, 507 enum snd_soc_bias_level level) 508 { 509 struct ml26124_priv *priv = snd_soc_codec_get_drvdata(codec); 510 511 switch (level) { 512 case SND_SOC_BIAS_ON: 513 snd_soc_update_bits(codec, ML26124_PW_SPAMP_PW_MNG, 514 ML26124_R26_MASK, ML26124_BLT_PREAMP_ON); 515 msleep(100); 516 snd_soc_update_bits(codec, ML26124_PW_SPAMP_PW_MNG, 517 ML26124_R26_MASK, 518 ML26124_MICBEN_ON | ML26124_BLT_ALL_ON); 519 break; 520 case SND_SOC_BIAS_PREPARE: 521 break; 522 case SND_SOC_BIAS_STANDBY: 523 /* VMID ON */ 524 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { 525 snd_soc_update_bits(codec, ML26124_PW_REF_PW_MNG, 526 ML26124_VMID, ML26124_VMID); 527 msleep(500); 528 regcache_sync(priv->regmap); 529 } 530 break; 531 case SND_SOC_BIAS_OFF: 532 /* VMID OFF */ 533 snd_soc_update_bits(codec, ML26124_PW_REF_PW_MNG, 534 ML26124_VMID, 0); 535 break; 536 } 537 codec->dapm.bias_level = level; 538 return 0; 539 } 540 541 static const struct snd_soc_dai_ops ml26124_dai_ops = { 542 .hw_params = ml26124_hw_params, 543 .digital_mute = ml26124_mute, 544 .set_fmt = ml26124_set_dai_fmt, 545 .set_sysclk = ml26124_set_dai_sysclk, 546 }; 547 548 static struct snd_soc_dai_driver ml26124_dai = { 549 .name = "ml26124-hifi", 550 .playback = { 551 .stream_name = "Playback", 552 .channels_min = 1, 553 .channels_max = 2, 554 .rates = ML26124_RATES, 555 .formats = ML26124_FORMATS,}, 556 .capture = { 557 .stream_name = "Capture", 558 .channels_min = 1, 559 .channels_max = 2, 560 .rates = ML26124_RATES, 561 .formats = ML26124_FORMATS,}, 562 .ops = &ml26124_dai_ops, 563 .symmetric_rates = 1, 564 }; 565 566 #ifdef CONFIG_PM 567 static int ml26124_suspend(struct snd_soc_codec *codec) 568 { 569 ml26124_set_bias_level(codec, SND_SOC_BIAS_OFF); 570 571 return 0; 572 } 573 574 static int ml26124_resume(struct snd_soc_codec *codec) 575 { 576 ml26124_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 577 578 return 0; 579 } 580 #else 581 #define ml26124_suspend NULL 582 #define ml26124_resume NULL 583 #endif 584 585 static int ml26124_probe(struct snd_soc_codec *codec) 586 { 587 int ret; 588 struct ml26124_priv *priv = snd_soc_codec_get_drvdata(codec); 589 codec->control_data = priv->regmap; 590 591 ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP); 592 if (ret < 0) { 593 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); 594 return ret; 595 } 596 597 /* Software Reset */ 598 snd_soc_update_bits(codec, ML26124_SW_RST, 0x01, 1); 599 snd_soc_update_bits(codec, ML26124_SW_RST, 0x01, 0); 600 601 ml26124_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 602 603 return 0; 604 } 605 606 static struct snd_soc_codec_driver soc_codec_dev_ml26124 = { 607 .probe = ml26124_probe, 608 .suspend = ml26124_suspend, 609 .resume = ml26124_resume, 610 .set_bias_level = ml26124_set_bias_level, 611 .dapm_widgets = ml26124_dapm_widgets, 612 .num_dapm_widgets = ARRAY_SIZE(ml26124_dapm_widgets), 613 .dapm_routes = ml26124_intercon, 614 .num_dapm_routes = ARRAY_SIZE(ml26124_intercon), 615 .controls = ml26124_snd_controls, 616 .num_controls = ARRAY_SIZE(ml26124_snd_controls), 617 }; 618 619 static const struct regmap_config ml26124_i2c_regmap = { 620 .val_bits = 8, 621 .reg_bits = 8, 622 .max_register = ML26124_NUM_REGISTER, 623 .reg_defaults = ml26124_reg, 624 .num_reg_defaults = ARRAY_SIZE(ml26124_reg), 625 .cache_type = REGCACHE_RBTREE, 626 .write_flag_mask = 0x01, 627 }; 628 629 static int ml26124_i2c_probe(struct i2c_client *i2c, 630 const struct i2c_device_id *id) 631 { 632 struct ml26124_priv *priv; 633 int ret; 634 635 priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL); 636 if (!priv) 637 return -ENOMEM; 638 639 i2c_set_clientdata(i2c, priv); 640 641 priv->regmap = devm_regmap_init_i2c(i2c, &ml26124_i2c_regmap); 642 if (IS_ERR(priv->regmap)) { 643 ret = PTR_ERR(priv->regmap); 644 dev_err(&i2c->dev, "regmap_init_i2c() failed: %d\n", ret); 645 return ret; 646 } 647 648 return snd_soc_register_codec(&i2c->dev, 649 &soc_codec_dev_ml26124, &ml26124_dai, 1); 650 } 651 652 static int ml26124_i2c_remove(struct i2c_client *client) 653 { 654 snd_soc_unregister_codec(&client->dev); 655 return 0; 656 } 657 658 static const struct i2c_device_id ml26124_i2c_id[] = { 659 { "ml26124", 0 }, 660 { } 661 }; 662 MODULE_DEVICE_TABLE(i2c, ml26124_i2c_id); 663 664 static struct i2c_driver ml26124_i2c_driver = { 665 .driver = { 666 .name = "ml26124", 667 .owner = THIS_MODULE, 668 }, 669 .probe = ml26124_i2c_probe, 670 .remove = ml26124_i2c_remove, 671 .id_table = ml26124_i2c_id, 672 }; 673 674 module_i2c_driver(ml26124_i2c_driver); 675 676 MODULE_AUTHOR("Tomoya MORINAGA <tomoya.rohm@gmail.com>"); 677 MODULE_DESCRIPTION("LAPIS Semiconductor ML26124 ALSA SoC codec driver"); 678 MODULE_LICENSE("GPL"); 679