1 /* 2 * ak4642.c -- AK4642/AK4643 ALSA Soc Audio driver 3 * 4 * Copyright (C) 2009 Renesas Solutions Corp. 5 * Kuninori Morimoto <morimoto.kuninori@renesas.com> 6 * 7 * Based on wm8731.c by Richard Purdie 8 * Based on ak4535.c by Richard Purdie 9 * Based on wm8753.c by Liam Girdwood 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License version 2 as 13 * published by the Free Software Foundation. 14 */ 15 16 /* ** CAUTION ** 17 * 18 * This is very simple driver. 19 * It can use headphone output / stereo input only 20 * 21 * AK4642 is tested. 22 * AK4643 is tested. 23 * AK4648 is tested. 24 */ 25 26 #include <linux/clk.h> 27 #include <linux/clk-provider.h> 28 #include <linux/delay.h> 29 #include <linux/i2c.h> 30 #include <linux/slab.h> 31 #include <linux/of_device.h> 32 #include <linux/module.h> 33 #include <linux/regmap.h> 34 #include <sound/soc.h> 35 #include <sound/initval.h> 36 #include <sound/tlv.h> 37 38 #define PW_MGMT1 0x00 39 #define PW_MGMT2 0x01 40 #define SG_SL1 0x02 41 #define SG_SL2 0x03 42 #define MD_CTL1 0x04 43 #define MD_CTL2 0x05 44 #define TIMER 0x06 45 #define ALC_CTL1 0x07 46 #define ALC_CTL2 0x08 47 #define L_IVC 0x09 48 #define L_DVC 0x0a 49 #define ALC_CTL3 0x0b 50 #define R_IVC 0x0c 51 #define R_DVC 0x0d 52 #define MD_CTL3 0x0e 53 #define MD_CTL4 0x0f 54 #define PW_MGMT3 0x10 55 #define DF_S 0x11 56 #define FIL3_0 0x12 57 #define FIL3_1 0x13 58 #define FIL3_2 0x14 59 #define FIL3_3 0x15 60 #define EQ_0 0x16 61 #define EQ_1 0x17 62 #define EQ_2 0x18 63 #define EQ_3 0x19 64 #define EQ_4 0x1a 65 #define EQ_5 0x1b 66 #define FIL1_0 0x1c 67 #define FIL1_1 0x1d 68 #define FIL1_2 0x1e 69 #define FIL1_3 0x1f /* The maximum valid register for ak4642 */ 70 #define PW_MGMT4 0x20 71 #define MD_CTL5 0x21 72 #define LO_MS 0x22 73 #define HP_MS 0x23 74 #define SPK_MS 0x24 /* The maximum valid register for ak4643 */ 75 #define EQ_FBEQAB 0x25 76 #define EQ_FBEQCD 0x26 77 #define EQ_FBEQE 0x27 /* The maximum valid register for ak4648 */ 78 79 /* PW_MGMT1*/ 80 #define PMVCM (1 << 6) /* VCOM Power Management */ 81 #define PMMIN (1 << 5) /* MIN Input Power Management */ 82 #define PMDAC (1 << 2) /* DAC Power Management */ 83 #define PMADL (1 << 0) /* MIC Amp Lch and ADC Lch Power Management */ 84 85 /* PW_MGMT2 */ 86 #define HPMTN (1 << 6) 87 #define PMHPL (1 << 5) 88 #define PMHPR (1 << 4) 89 #define MS (1 << 3) /* master/slave select */ 90 #define MCKO (1 << 1) 91 #define PMPLL (1 << 0) 92 93 #define PMHP_MASK (PMHPL | PMHPR) 94 #define PMHP PMHP_MASK 95 96 /* PW_MGMT3 */ 97 #define PMADR (1 << 0) /* MIC L / ADC R Power Management */ 98 99 /* SG_SL1 */ 100 #define MINS (1 << 6) /* Switch from MIN to Speaker */ 101 #define DACL (1 << 4) /* Switch from DAC to Stereo or Receiver */ 102 #define PMMP (1 << 2) /* MPWR pin Power Management */ 103 #define MGAIN0 (1 << 0) /* MIC amp gain*/ 104 105 /* SG_SL2 */ 106 #define LOPS (1 << 6) /* Stero Line-out Power Save Mode */ 107 108 /* TIMER */ 109 #define ZTM(param) ((param & 0x3) << 4) /* ALC Zero Crossing TimeOut */ 110 #define WTM(param) (((param & 0x4) << 4) | ((param & 0x3) << 2)) 111 112 /* ALC_CTL1 */ 113 #define ALC (1 << 5) /* ALC Enable */ 114 #define LMTH0 (1 << 0) /* ALC Limiter / Recovery Level */ 115 116 /* MD_CTL1 */ 117 #define PLL3 (1 << 7) 118 #define PLL2 (1 << 6) 119 #define PLL1 (1 << 5) 120 #define PLL0 (1 << 4) 121 #define PLL_MASK (PLL3 | PLL2 | PLL1 | PLL0) 122 123 #define BCKO_MASK (1 << 3) 124 #define BCKO_64 BCKO_MASK 125 126 #define DIF_MASK (3 << 0) 127 #define DSP (0 << 0) 128 #define RIGHT_J (1 << 0) 129 #define LEFT_J (2 << 0) 130 #define I2S (3 << 0) 131 132 /* MD_CTL2 */ 133 #define FSs(val) (((val & 0x7) << 0) | ((val & 0x8) << 2)) 134 #define PSs(val) ((val & 0x3) << 6) 135 136 /* MD_CTL3 */ 137 #define BST1 (1 << 3) 138 139 /* MD_CTL4 */ 140 #define DACH (1 << 0) 141 142 struct ak4642_drvdata { 143 const struct regmap_config *regmap_config; 144 int extended_frequencies; 145 }; 146 147 struct ak4642_priv { 148 const struct ak4642_drvdata *drvdata; 149 struct clk *mcko; 150 }; 151 152 /* 153 * Playback Volume (table 39) 154 * 155 * max : 0x00 : +12.0 dB 156 * ( 0.5 dB step ) 157 * min : 0xFE : -115.0 dB 158 * mute: 0xFF 159 */ 160 static const DECLARE_TLV_DB_SCALE(out_tlv, -11550, 50, 1); 161 162 static const struct snd_kcontrol_new ak4642_snd_controls[] = { 163 164 SOC_DOUBLE_R_TLV("Digital Playback Volume", L_DVC, R_DVC, 165 0, 0xFF, 1, out_tlv), 166 SOC_SINGLE("ALC Capture Switch", ALC_CTL1, 5, 1, 0), 167 SOC_SINGLE("ALC Capture ZC Switch", ALC_CTL1, 4, 1, 1), 168 }; 169 170 static const struct snd_kcontrol_new ak4642_headphone_control = 171 SOC_DAPM_SINGLE("Switch", PW_MGMT2, 6, 1, 0); 172 173 static const struct snd_kcontrol_new ak4642_lout_mixer_controls[] = { 174 SOC_DAPM_SINGLE("DACL", SG_SL1, 4, 1, 0), 175 }; 176 177 /* event handlers */ 178 static int ak4642_lout_event(struct snd_soc_dapm_widget *w, 179 struct snd_kcontrol *kcontrol, int event) 180 { 181 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); 182 183 switch (event) { 184 case SND_SOC_DAPM_PRE_PMD: 185 case SND_SOC_DAPM_PRE_PMU: 186 /* Power save mode ON */ 187 snd_soc_update_bits(codec, SG_SL2, LOPS, LOPS); 188 break; 189 case SND_SOC_DAPM_POST_PMU: 190 case SND_SOC_DAPM_POST_PMD: 191 /* Power save mode OFF */ 192 mdelay(300); 193 snd_soc_update_bits(codec, SG_SL2, LOPS, 0); 194 break; 195 } 196 197 return 0; 198 } 199 200 static const struct snd_soc_dapm_widget ak4642_dapm_widgets[] = { 201 202 /* Outputs */ 203 SND_SOC_DAPM_OUTPUT("HPOUTL"), 204 SND_SOC_DAPM_OUTPUT("HPOUTR"), 205 SND_SOC_DAPM_OUTPUT("LINEOUT"), 206 207 SND_SOC_DAPM_PGA("HPL Out", PW_MGMT2, 5, 0, NULL, 0), 208 SND_SOC_DAPM_PGA("HPR Out", PW_MGMT2, 4, 0, NULL, 0), 209 SND_SOC_DAPM_SWITCH("Headphone Enable", SND_SOC_NOPM, 0, 0, 210 &ak4642_headphone_control), 211 212 SND_SOC_DAPM_PGA("DACH", MD_CTL4, 0, 0, NULL, 0), 213 214 SND_SOC_DAPM_MIXER_E("LINEOUT Mixer", PW_MGMT1, 3, 0, 215 &ak4642_lout_mixer_controls[0], 216 ARRAY_SIZE(ak4642_lout_mixer_controls), 217 ak4642_lout_event, 218 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | 219 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD), 220 221 /* DAC */ 222 SND_SOC_DAPM_DAC("DAC", NULL, PW_MGMT1, 2, 0), 223 }; 224 225 static const struct snd_soc_dapm_route ak4642_intercon[] = { 226 227 /* Outputs */ 228 {"HPOUTL", NULL, "HPL Out"}, 229 {"HPOUTR", NULL, "HPR Out"}, 230 {"LINEOUT", NULL, "LINEOUT Mixer"}, 231 232 {"HPL Out", NULL, "Headphone Enable"}, 233 {"HPR Out", NULL, "Headphone Enable"}, 234 235 {"Headphone Enable", "Switch", "DACH"}, 236 237 {"DACH", NULL, "DAC"}, 238 239 {"LINEOUT Mixer", "DACL", "DAC"}, 240 241 { "DAC", NULL, "Playback" }, 242 }; 243 244 /* 245 * ak4642 register cache 246 */ 247 static const struct reg_default ak4643_reg[] = { 248 { 0, 0x00 }, { 1, 0x00 }, { 2, 0x01 }, { 3, 0x00 }, 249 { 4, 0x02 }, { 5, 0x00 }, { 6, 0x00 }, { 7, 0x00 }, 250 { 8, 0xe1 }, { 9, 0xe1 }, { 10, 0x18 }, { 11, 0x00 }, 251 { 12, 0xe1 }, { 13, 0x18 }, { 14, 0x11 }, { 15, 0x08 }, 252 { 16, 0x00 }, { 17, 0x00 }, { 18, 0x00 }, { 19, 0x00 }, 253 { 20, 0x00 }, { 21, 0x00 }, { 22, 0x00 }, { 23, 0x00 }, 254 { 24, 0x00 }, { 25, 0x00 }, { 26, 0x00 }, { 27, 0x00 }, 255 { 28, 0x00 }, { 29, 0x00 }, { 30, 0x00 }, { 31, 0x00 }, 256 { 32, 0x00 }, { 33, 0x00 }, { 34, 0x00 }, { 35, 0x00 }, 257 { 36, 0x00 }, 258 }; 259 260 /* The default settings for 0x0 ~ 0x1f registers are the same for ak4642 261 and ak4643. So we reuse the ak4643 reg_default for ak4642. 262 The valid registers for ak4642 are 0x0 ~ 0x1f which is a subset of ak4643, 263 so define NUM_AK4642_REG_DEFAULTS for ak4642. 264 */ 265 #define ak4642_reg ak4643_reg 266 #define NUM_AK4642_REG_DEFAULTS (FIL1_3 + 1) 267 268 static const struct reg_default ak4648_reg[] = { 269 { 0, 0x00 }, { 1, 0x00 }, { 2, 0x01 }, { 3, 0x00 }, 270 { 4, 0x02 }, { 5, 0x00 }, { 6, 0x00 }, { 7, 0x00 }, 271 { 8, 0xe1 }, { 9, 0xe1 }, { 10, 0x18 }, { 11, 0x00 }, 272 { 12, 0xe1 }, { 13, 0x18 }, { 14, 0x11 }, { 15, 0xb8 }, 273 { 16, 0x00 }, { 17, 0x00 }, { 18, 0x00 }, { 19, 0x00 }, 274 { 20, 0x00 }, { 21, 0x00 }, { 22, 0x00 }, { 23, 0x00 }, 275 { 24, 0x00 }, { 25, 0x00 }, { 26, 0x00 }, { 27, 0x00 }, 276 { 28, 0x00 }, { 29, 0x00 }, { 30, 0x00 }, { 31, 0x00 }, 277 { 32, 0x00 }, { 33, 0x00 }, { 34, 0x00 }, { 35, 0x00 }, 278 { 36, 0x00 }, { 37, 0x88 }, { 38, 0x88 }, { 39, 0x08 }, 279 }; 280 281 static int ak4642_dai_startup(struct snd_pcm_substream *substream, 282 struct snd_soc_dai *dai) 283 { 284 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 285 struct snd_soc_codec *codec = dai->codec; 286 287 if (is_play) { 288 /* 289 * start headphone output 290 * 291 * PLL, Master Mode 292 * Audio I/F Format :MSB justified (ADC & DAC) 293 * Bass Boost Level : Middle 294 * 295 * This operation came from example code of 296 * "ASAHI KASEI AK4642" (japanese) manual p97. 297 */ 298 snd_soc_write(codec, L_IVC, 0x91); /* volume */ 299 snd_soc_write(codec, R_IVC, 0x91); /* volume */ 300 } else { 301 /* 302 * start stereo input 303 * 304 * PLL Master Mode 305 * Audio I/F Format:MSB justified (ADC & DAC) 306 * Pre MIC AMP:+20dB 307 * MIC Power On 308 * ALC setting:Refer to Table 35 309 * ALC bit=“1” 310 * 311 * This operation came from example code of 312 * "ASAHI KASEI AK4642" (japanese) manual p94. 313 */ 314 snd_soc_update_bits(codec, SG_SL1, PMMP | MGAIN0, PMMP | MGAIN0); 315 snd_soc_write(codec, TIMER, ZTM(0x3) | WTM(0x3)); 316 snd_soc_write(codec, ALC_CTL1, ALC | LMTH0); 317 snd_soc_update_bits(codec, PW_MGMT1, PMADL, PMADL); 318 snd_soc_update_bits(codec, PW_MGMT3, PMADR, PMADR); 319 } 320 321 return 0; 322 } 323 324 static void ak4642_dai_shutdown(struct snd_pcm_substream *substream, 325 struct snd_soc_dai *dai) 326 { 327 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 328 struct snd_soc_codec *codec = dai->codec; 329 330 if (is_play) { 331 } else { 332 /* stop stereo input */ 333 snd_soc_update_bits(codec, PW_MGMT1, PMADL, 0); 334 snd_soc_update_bits(codec, PW_MGMT3, PMADR, 0); 335 snd_soc_update_bits(codec, ALC_CTL1, ALC, 0); 336 } 337 } 338 339 static int ak4642_dai_set_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 ak4642_priv *priv = snd_soc_codec_get_drvdata(codec); 344 u8 pll; 345 int extended_freq = 0; 346 347 switch (freq) { 348 case 11289600: 349 pll = PLL2; 350 break; 351 case 12288000: 352 pll = PLL2 | PLL0; 353 break; 354 case 12000000: 355 pll = PLL2 | PLL1; 356 break; 357 case 24000000: 358 pll = PLL2 | PLL1 | PLL0; 359 break; 360 case 13500000: 361 pll = PLL3 | PLL2; 362 break; 363 case 27000000: 364 pll = PLL3 | PLL2 | PLL0; 365 break; 366 case 19200000: 367 pll = PLL3; 368 extended_freq = 1; 369 break; 370 case 13000000: 371 pll = PLL3 | PLL2 | PLL1; 372 extended_freq = 1; 373 break; 374 case 26000000: 375 pll = PLL3 | PLL2 | PLL1 | PLL0; 376 extended_freq = 1; 377 break; 378 default: 379 return -EINVAL; 380 } 381 382 if (extended_freq && !priv->drvdata->extended_frequencies) 383 return -EINVAL; 384 385 snd_soc_update_bits(codec, MD_CTL1, PLL_MASK, pll); 386 387 return 0; 388 } 389 390 static int ak4642_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 391 { 392 struct snd_soc_codec *codec = dai->codec; 393 u8 data; 394 u8 bcko; 395 396 data = MCKO | PMPLL; /* use MCKO */ 397 bcko = 0; 398 399 /* set master/slave audio interface */ 400 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 401 case SND_SOC_DAIFMT_CBM_CFM: 402 data |= MS; 403 bcko = BCKO_64; 404 break; 405 case SND_SOC_DAIFMT_CBS_CFS: 406 break; 407 default: 408 return -EINVAL; 409 } 410 snd_soc_update_bits(codec, PW_MGMT2, MS | MCKO | PMPLL, data); 411 snd_soc_update_bits(codec, MD_CTL1, BCKO_MASK, bcko); 412 413 /* format type */ 414 data = 0; 415 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 416 case SND_SOC_DAIFMT_LEFT_J: 417 data = LEFT_J; 418 break; 419 case SND_SOC_DAIFMT_I2S: 420 data = I2S; 421 break; 422 /* FIXME 423 * Please add RIGHT_J / DSP support here 424 */ 425 default: 426 return -EINVAL; 427 } 428 snd_soc_update_bits(codec, MD_CTL1, DIF_MASK, data); 429 430 return 0; 431 } 432 433 static int ak4642_set_mcko(struct snd_soc_codec *codec, 434 u32 frequency) 435 { 436 u32 fs_list[] = { 437 [0] = 8000, 438 [1] = 12000, 439 [2] = 16000, 440 [3] = 24000, 441 [4] = 7350, 442 [5] = 11025, 443 [6] = 14700, 444 [7] = 22050, 445 [10] = 32000, 446 [11] = 48000, 447 [14] = 29400, 448 [15] = 44100, 449 }; 450 u32 ps_list[] = { 451 [0] = 256, 452 [1] = 128, 453 [2] = 64, 454 [3] = 32 455 }; 456 int ps, fs; 457 458 for (ps = 0; ps < ARRAY_SIZE(ps_list); ps++) { 459 for (fs = 0; fs < ARRAY_SIZE(fs_list); fs++) { 460 if (frequency == ps_list[ps] * fs_list[fs]) { 461 snd_soc_write(codec, MD_CTL2, 462 PSs(ps) | FSs(fs)); 463 return 0; 464 } 465 } 466 } 467 468 return 0; 469 } 470 471 static int ak4642_dai_hw_params(struct snd_pcm_substream *substream, 472 struct snd_pcm_hw_params *params, 473 struct snd_soc_dai *dai) 474 { 475 struct snd_soc_codec *codec = dai->codec; 476 struct ak4642_priv *priv = snd_soc_codec_get_drvdata(codec); 477 u32 rate = clk_get_rate(priv->mcko); 478 479 if (!rate) 480 rate = params_rate(params) * 256; 481 482 return ak4642_set_mcko(codec, rate); 483 } 484 485 static int ak4642_set_bias_level(struct snd_soc_codec *codec, 486 enum snd_soc_bias_level level) 487 { 488 switch (level) { 489 case SND_SOC_BIAS_OFF: 490 snd_soc_write(codec, PW_MGMT1, 0x00); 491 break; 492 default: 493 snd_soc_update_bits(codec, PW_MGMT1, PMVCM, PMVCM); 494 break; 495 } 496 497 return 0; 498 } 499 500 static const struct snd_soc_dai_ops ak4642_dai_ops = { 501 .startup = ak4642_dai_startup, 502 .shutdown = ak4642_dai_shutdown, 503 .set_sysclk = ak4642_dai_set_sysclk, 504 .set_fmt = ak4642_dai_set_fmt, 505 .hw_params = ak4642_dai_hw_params, 506 }; 507 508 static struct snd_soc_dai_driver ak4642_dai = { 509 .name = "ak4642-hifi", 510 .playback = { 511 .stream_name = "Playback", 512 .channels_min = 2, 513 .channels_max = 2, 514 .rates = SNDRV_PCM_RATE_8000_48000, 515 .formats = SNDRV_PCM_FMTBIT_S16_LE }, 516 .capture = { 517 .stream_name = "Capture", 518 .channels_min = 2, 519 .channels_max = 2, 520 .rates = SNDRV_PCM_RATE_8000_48000, 521 .formats = SNDRV_PCM_FMTBIT_S16_LE }, 522 .ops = &ak4642_dai_ops, 523 .symmetric_rates = 1, 524 }; 525 526 static int ak4642_suspend(struct snd_soc_codec *codec) 527 { 528 struct regmap *regmap = dev_get_regmap(codec->dev, NULL); 529 530 regcache_cache_only(regmap, true); 531 regcache_mark_dirty(regmap); 532 return 0; 533 } 534 535 static int ak4642_resume(struct snd_soc_codec *codec) 536 { 537 struct regmap *regmap = dev_get_regmap(codec->dev, NULL); 538 539 regcache_cache_only(regmap, false); 540 regcache_sync(regmap); 541 return 0; 542 } 543 static int ak4642_probe(struct snd_soc_codec *codec) 544 { 545 struct ak4642_priv *priv = snd_soc_codec_get_drvdata(codec); 546 547 if (priv->mcko) 548 ak4642_set_mcko(codec, clk_get_rate(priv->mcko)); 549 550 return 0; 551 } 552 553 static struct snd_soc_codec_driver soc_codec_dev_ak4642 = { 554 .probe = ak4642_probe, 555 .suspend = ak4642_suspend, 556 .resume = ak4642_resume, 557 .set_bias_level = ak4642_set_bias_level, 558 .controls = ak4642_snd_controls, 559 .num_controls = ARRAY_SIZE(ak4642_snd_controls), 560 .dapm_widgets = ak4642_dapm_widgets, 561 .num_dapm_widgets = ARRAY_SIZE(ak4642_dapm_widgets), 562 .dapm_routes = ak4642_intercon, 563 .num_dapm_routes = ARRAY_SIZE(ak4642_intercon), 564 }; 565 566 static const struct regmap_config ak4642_regmap = { 567 .reg_bits = 8, 568 .val_bits = 8, 569 .max_register = FIL1_3, 570 .reg_defaults = ak4642_reg, 571 .num_reg_defaults = NUM_AK4642_REG_DEFAULTS, 572 .cache_type = REGCACHE_RBTREE, 573 }; 574 575 static const struct regmap_config ak4643_regmap = { 576 .reg_bits = 8, 577 .val_bits = 8, 578 .max_register = SPK_MS, 579 .reg_defaults = ak4643_reg, 580 .num_reg_defaults = ARRAY_SIZE(ak4643_reg), 581 .cache_type = REGCACHE_RBTREE, 582 }; 583 584 static const struct regmap_config ak4648_regmap = { 585 .reg_bits = 8, 586 .val_bits = 8, 587 .max_register = EQ_FBEQE, 588 .reg_defaults = ak4648_reg, 589 .num_reg_defaults = ARRAY_SIZE(ak4648_reg), 590 .cache_type = REGCACHE_RBTREE, 591 }; 592 593 static const struct ak4642_drvdata ak4642_drvdata = { 594 .regmap_config = &ak4642_regmap, 595 }; 596 597 static const struct ak4642_drvdata ak4643_drvdata = { 598 .regmap_config = &ak4643_regmap, 599 }; 600 601 static const struct ak4642_drvdata ak4648_drvdata = { 602 .regmap_config = &ak4648_regmap, 603 .extended_frequencies = 1, 604 }; 605 606 #ifdef CONFIG_COMMON_CLK 607 static struct clk *ak4642_of_parse_mcko(struct device *dev) 608 { 609 struct device_node *np = dev->of_node; 610 struct clk *clk; 611 const char *clk_name = np->name; 612 const char *parent_clk_name = NULL; 613 u32 rate; 614 615 if (of_property_read_u32(np, "clock-frequency", &rate)) 616 return NULL; 617 618 if (of_property_read_bool(np, "clocks")) 619 parent_clk_name = of_clk_get_parent_name(np, 0); 620 621 of_property_read_string(np, "clock-output-names", &clk_name); 622 623 clk = clk_register_fixed_rate(dev, clk_name, parent_clk_name, 0, rate); 624 if (!IS_ERR(clk)) 625 of_clk_add_provider(np, of_clk_src_simple_get, clk); 626 627 return clk; 628 } 629 #else 630 #define ak4642_of_parse_mcko(d) 0 631 #endif 632 633 static const struct of_device_id ak4642_of_match[]; 634 static int ak4642_i2c_probe(struct i2c_client *i2c, 635 const struct i2c_device_id *id) 636 { 637 struct device *dev = &i2c->dev; 638 struct device_node *np = dev->of_node; 639 const struct ak4642_drvdata *drvdata = NULL; 640 struct regmap *regmap; 641 struct ak4642_priv *priv; 642 struct clk *mcko = NULL; 643 644 if (np) { 645 const struct of_device_id *of_id; 646 647 mcko = ak4642_of_parse_mcko(dev); 648 if (IS_ERR(mcko)) 649 mcko = NULL; 650 651 of_id = of_match_device(ak4642_of_match, dev); 652 if (of_id) 653 drvdata = of_id->data; 654 } else { 655 drvdata = (const struct ak4642_drvdata *)id->driver_data; 656 } 657 658 if (!drvdata) { 659 dev_err(dev, "Unknown device type\n"); 660 return -EINVAL; 661 } 662 663 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 664 if (!priv) 665 return -ENOMEM; 666 667 priv->drvdata = drvdata; 668 priv->mcko = mcko; 669 670 i2c_set_clientdata(i2c, priv); 671 672 regmap = devm_regmap_init_i2c(i2c, drvdata->regmap_config); 673 if (IS_ERR(regmap)) 674 return PTR_ERR(regmap); 675 676 return snd_soc_register_codec(dev, 677 &soc_codec_dev_ak4642, &ak4642_dai, 1); 678 } 679 680 static int ak4642_i2c_remove(struct i2c_client *client) 681 { 682 snd_soc_unregister_codec(&client->dev); 683 return 0; 684 } 685 686 static const struct of_device_id ak4642_of_match[] = { 687 { .compatible = "asahi-kasei,ak4642", .data = &ak4642_drvdata}, 688 { .compatible = "asahi-kasei,ak4643", .data = &ak4643_drvdata}, 689 { .compatible = "asahi-kasei,ak4648", .data = &ak4648_drvdata}, 690 {}, 691 }; 692 MODULE_DEVICE_TABLE(of, ak4642_of_match); 693 694 static const struct i2c_device_id ak4642_i2c_id[] = { 695 { "ak4642", (kernel_ulong_t)&ak4642_drvdata }, 696 { "ak4643", (kernel_ulong_t)&ak4643_drvdata }, 697 { "ak4648", (kernel_ulong_t)&ak4648_drvdata }, 698 { } 699 }; 700 MODULE_DEVICE_TABLE(i2c, ak4642_i2c_id); 701 702 static struct i2c_driver ak4642_i2c_driver = { 703 .driver = { 704 .name = "ak4642-codec", 705 .of_match_table = ak4642_of_match, 706 }, 707 .probe = ak4642_i2c_probe, 708 .remove = ak4642_i2c_remove, 709 .id_table = ak4642_i2c_id, 710 }; 711 712 module_i2c_driver(ak4642_i2c_driver); 713 714 MODULE_DESCRIPTION("Soc AK4642 driver"); 715 MODULE_AUTHOR("Kuninori Morimoto <morimoto.kuninori@renesas.com>"); 716 MODULE_LICENSE("GPL"); 717