1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // ak4642.c -- AK4642/AK4643 ALSA Soc Audio driver 4 // 5 // Copyright (C) 2009 Renesas Solutions Corp. 6 // Kuninori Morimoto <morimoto.kuninori@renesas.com> 7 // 8 // Based on wm8731.c by Richard Purdie 9 // Based on ak4535.c by Richard Purdie 10 // Based on wm8753.c by Liam Girdwood 11 12 /* ** CAUTION ** 13 * 14 * This is very simple driver. 15 * It can use headphone output / stereo input only 16 * 17 * AK4642 is tested. 18 * AK4643 is tested. 19 * AK4648 is tested. 20 */ 21 22 #include <linux/clk.h> 23 #include <linux/clk-provider.h> 24 #include <linux/delay.h> 25 #include <linux/i2c.h> 26 #include <linux/slab.h> 27 #include <linux/of_device.h> 28 #include <linux/module.h> 29 #include <linux/regmap.h> 30 #include <sound/soc.h> 31 #include <sound/initval.h> 32 #include <sound/tlv.h> 33 34 #define PW_MGMT1 0x00 35 #define PW_MGMT2 0x01 36 #define SG_SL1 0x02 37 #define SG_SL2 0x03 38 #define MD_CTL1 0x04 39 #define MD_CTL2 0x05 40 #define TIMER 0x06 41 #define ALC_CTL1 0x07 42 #define ALC_CTL2 0x08 43 #define L_IVC 0x09 44 #define L_DVC 0x0a 45 #define ALC_CTL3 0x0b 46 #define R_IVC 0x0c 47 #define R_DVC 0x0d 48 #define MD_CTL3 0x0e 49 #define MD_CTL4 0x0f 50 #define PW_MGMT3 0x10 51 #define DF_S 0x11 52 #define FIL3_0 0x12 53 #define FIL3_1 0x13 54 #define FIL3_2 0x14 55 #define FIL3_3 0x15 56 #define EQ_0 0x16 57 #define EQ_1 0x17 58 #define EQ_2 0x18 59 #define EQ_3 0x19 60 #define EQ_4 0x1a 61 #define EQ_5 0x1b 62 #define FIL1_0 0x1c 63 #define FIL1_1 0x1d 64 #define FIL1_2 0x1e 65 #define FIL1_3 0x1f /* The maximum valid register for ak4642 */ 66 #define PW_MGMT4 0x20 67 #define MD_CTL5 0x21 68 #define LO_MS 0x22 69 #define HP_MS 0x23 70 #define SPK_MS 0x24 /* The maximum valid register for ak4643 */ 71 #define EQ_FBEQAB 0x25 72 #define EQ_FBEQCD 0x26 73 #define EQ_FBEQE 0x27 /* The maximum valid register for ak4648 */ 74 75 /* PW_MGMT1*/ 76 #define PMVCM (1 << 6) /* VCOM Power Management */ 77 #define PMMIN (1 << 5) /* MIN Input Power Management */ 78 #define PMDAC (1 << 2) /* DAC Power Management */ 79 #define PMADL (1 << 0) /* MIC Amp Lch and ADC Lch Power Management */ 80 81 /* PW_MGMT2 */ 82 #define HPMTN (1 << 6) 83 #define PMHPL (1 << 5) 84 #define PMHPR (1 << 4) 85 #define MS (1 << 3) /* master/slave select */ 86 #define MCKO (1 << 1) 87 #define PMPLL (1 << 0) 88 89 #define PMHP_MASK (PMHPL | PMHPR) 90 #define PMHP PMHP_MASK 91 92 /* PW_MGMT3 */ 93 #define PMADR (1 << 0) /* MIC L / ADC R Power Management */ 94 95 /* SG_SL1 */ 96 #define MINS (1 << 6) /* Switch from MIN to Speaker */ 97 #define DACL (1 << 4) /* Switch from DAC to Stereo or Receiver */ 98 #define PMMP (1 << 2) /* MPWR pin Power Management */ 99 #define MGAIN0 (1 << 0) /* MIC amp gain*/ 100 101 /* SG_SL2 */ 102 #define LOPS (1 << 6) /* Stero Line-out Power Save Mode */ 103 104 /* TIMER */ 105 #define ZTM(param) ((param & 0x3) << 4) /* ALC Zero Crossing TimeOut */ 106 #define WTM(param) (((param & 0x4) << 4) | ((param & 0x3) << 2)) 107 108 /* ALC_CTL1 */ 109 #define ALC (1 << 5) /* ALC Enable */ 110 #define LMTH0 (1 << 0) /* ALC Limiter / Recovery Level */ 111 112 /* MD_CTL1 */ 113 #define PLL3 (1 << 7) 114 #define PLL2 (1 << 6) 115 #define PLL1 (1 << 5) 116 #define PLL0 (1 << 4) 117 #define PLL_MASK (PLL3 | PLL2 | PLL1 | PLL0) 118 119 #define BCKO_MASK (1 << 3) 120 #define BCKO_64 BCKO_MASK 121 122 #define DIF_MASK (3 << 0) 123 #define DSP (0 << 0) 124 #define RIGHT_J (1 << 0) 125 #define LEFT_J (2 << 0) 126 #define I2S (3 << 0) 127 128 /* MD_CTL2 */ 129 #define FSs(val) (((val & 0x7) << 0) | ((val & 0x8) << 2)) 130 #define PSs(val) ((val & 0x3) << 6) 131 132 /* MD_CTL3 */ 133 #define BST1 (1 << 3) 134 135 /* MD_CTL4 */ 136 #define DACH (1 << 0) 137 138 struct ak4642_drvdata { 139 const struct regmap_config *regmap_config; 140 int extended_frequencies; 141 }; 142 143 struct ak4642_priv { 144 const struct ak4642_drvdata *drvdata; 145 struct clk *mcko; 146 }; 147 148 /* 149 * Playback Volume (table 39) 150 * 151 * max : 0x00 : +12.0 dB 152 * ( 0.5 dB step ) 153 * min : 0xFE : -115.0 dB 154 * mute: 0xFF 155 */ 156 static const DECLARE_TLV_DB_SCALE(out_tlv, -11550, 50, 1); 157 158 static const struct snd_kcontrol_new ak4642_snd_controls[] = { 159 160 SOC_DOUBLE_R_TLV("Digital Playback Volume", L_DVC, R_DVC, 161 0, 0xFF, 1, out_tlv), 162 SOC_SINGLE("ALC Capture Switch", ALC_CTL1, 5, 1, 0), 163 SOC_SINGLE("ALC Capture ZC Switch", ALC_CTL1, 4, 1, 1), 164 }; 165 166 static const struct snd_kcontrol_new ak4642_headphone_control = 167 SOC_DAPM_SINGLE("Switch", PW_MGMT2, 6, 1, 0); 168 169 static const struct snd_kcontrol_new ak4642_lout_mixer_controls[] = { 170 SOC_DAPM_SINGLE("DACL", SG_SL1, 4, 1, 0), 171 }; 172 173 /* event handlers */ 174 static int ak4642_lout_event(struct snd_soc_dapm_widget *w, 175 struct snd_kcontrol *kcontrol, int event) 176 { 177 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); 178 179 switch (event) { 180 case SND_SOC_DAPM_PRE_PMD: 181 case SND_SOC_DAPM_PRE_PMU: 182 /* Power save mode ON */ 183 snd_soc_component_update_bits(component, SG_SL2, LOPS, LOPS); 184 break; 185 case SND_SOC_DAPM_POST_PMU: 186 case SND_SOC_DAPM_POST_PMD: 187 /* Power save mode OFF */ 188 msleep(300); 189 snd_soc_component_update_bits(component, SG_SL2, LOPS, 0); 190 break; 191 } 192 193 return 0; 194 } 195 196 static const struct snd_soc_dapm_widget ak4642_dapm_widgets[] = { 197 198 /* Outputs */ 199 SND_SOC_DAPM_OUTPUT("HPOUTL"), 200 SND_SOC_DAPM_OUTPUT("HPOUTR"), 201 SND_SOC_DAPM_OUTPUT("LINEOUT"), 202 203 SND_SOC_DAPM_PGA("HPL Out", PW_MGMT2, 5, 0, NULL, 0), 204 SND_SOC_DAPM_PGA("HPR Out", PW_MGMT2, 4, 0, NULL, 0), 205 SND_SOC_DAPM_SWITCH("Headphone Enable", SND_SOC_NOPM, 0, 0, 206 &ak4642_headphone_control), 207 208 SND_SOC_DAPM_PGA("DACH", MD_CTL4, 0, 0, NULL, 0), 209 210 SND_SOC_DAPM_MIXER_E("LINEOUT Mixer", PW_MGMT1, 3, 0, 211 &ak4642_lout_mixer_controls[0], 212 ARRAY_SIZE(ak4642_lout_mixer_controls), 213 ak4642_lout_event, 214 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | 215 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD), 216 217 /* DAC */ 218 SND_SOC_DAPM_DAC("DAC", NULL, PW_MGMT1, 2, 0), 219 }; 220 221 static const struct snd_soc_dapm_route ak4642_intercon[] = { 222 223 /* Outputs */ 224 {"HPOUTL", NULL, "HPL Out"}, 225 {"HPOUTR", NULL, "HPR Out"}, 226 {"LINEOUT", NULL, "LINEOUT Mixer"}, 227 228 {"HPL Out", NULL, "Headphone Enable"}, 229 {"HPR Out", NULL, "Headphone Enable"}, 230 231 {"Headphone Enable", "Switch", "DACH"}, 232 233 {"DACH", NULL, "DAC"}, 234 235 {"LINEOUT Mixer", "DACL", "DAC"}, 236 237 { "DAC", NULL, "Playback" }, 238 }; 239 240 /* 241 * ak4642 register cache 242 */ 243 static const struct reg_default ak4643_reg[] = { 244 { 0, 0x00 }, { 1, 0x00 }, { 2, 0x01 }, { 3, 0x00 }, 245 { 4, 0x02 }, { 5, 0x00 }, { 6, 0x00 }, { 7, 0x00 }, 246 { 8, 0xe1 }, { 9, 0xe1 }, { 10, 0x18 }, { 11, 0x00 }, 247 { 12, 0xe1 }, { 13, 0x18 }, { 14, 0x11 }, { 15, 0x08 }, 248 { 16, 0x00 }, { 17, 0x00 }, { 18, 0x00 }, { 19, 0x00 }, 249 { 20, 0x00 }, { 21, 0x00 }, { 22, 0x00 }, { 23, 0x00 }, 250 { 24, 0x00 }, { 25, 0x00 }, { 26, 0x00 }, { 27, 0x00 }, 251 { 28, 0x00 }, { 29, 0x00 }, { 30, 0x00 }, { 31, 0x00 }, 252 { 32, 0x00 }, { 33, 0x00 }, { 34, 0x00 }, { 35, 0x00 }, 253 { 36, 0x00 }, 254 }; 255 256 /* The default settings for 0x0 ~ 0x1f registers are the same for ak4642 257 and ak4643. So we reuse the ak4643 reg_default for ak4642. 258 The valid registers for ak4642 are 0x0 ~ 0x1f which is a subset of ak4643, 259 so define NUM_AK4642_REG_DEFAULTS for ak4642. 260 */ 261 #define ak4642_reg ak4643_reg 262 #define NUM_AK4642_REG_DEFAULTS (FIL1_3 + 1) 263 264 static const struct reg_default ak4648_reg[] = { 265 { 0, 0x00 }, { 1, 0x00 }, { 2, 0x01 }, { 3, 0x00 }, 266 { 4, 0x02 }, { 5, 0x00 }, { 6, 0x00 }, { 7, 0x00 }, 267 { 8, 0xe1 }, { 9, 0xe1 }, { 10, 0x18 }, { 11, 0x00 }, 268 { 12, 0xe1 }, { 13, 0x18 }, { 14, 0x11 }, { 15, 0xb8 }, 269 { 16, 0x00 }, { 17, 0x00 }, { 18, 0x00 }, { 19, 0x00 }, 270 { 20, 0x00 }, { 21, 0x00 }, { 22, 0x00 }, { 23, 0x00 }, 271 { 24, 0x00 }, { 25, 0x00 }, { 26, 0x00 }, { 27, 0x00 }, 272 { 28, 0x00 }, { 29, 0x00 }, { 30, 0x00 }, { 31, 0x00 }, 273 { 32, 0x00 }, { 33, 0x00 }, { 34, 0x00 }, { 35, 0x00 }, 274 { 36, 0x00 }, { 37, 0x88 }, { 38, 0x88 }, { 39, 0x08 }, 275 }; 276 277 static int ak4642_dai_startup(struct snd_pcm_substream *substream, 278 struct snd_soc_dai *dai) 279 { 280 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 281 struct snd_soc_component *component = dai->component; 282 283 if (is_play) { 284 /* 285 * start headphone output 286 * 287 * PLL, Master Mode 288 * Audio I/F Format :MSB justified (ADC & DAC) 289 * Bass Boost Level : Middle 290 * 291 * This operation came from example code of 292 * "ASAHI KASEI AK4642" (japanese) manual p97. 293 */ 294 snd_soc_component_write(component, L_IVC, 0x91); /* volume */ 295 snd_soc_component_write(component, R_IVC, 0x91); /* volume */ 296 } else { 297 /* 298 * start stereo input 299 * 300 * PLL Master Mode 301 * Audio I/F Format:MSB justified (ADC & DAC) 302 * Pre MIC AMP:+20dB 303 * MIC Power On 304 * ALC setting:Refer to Table 35 305 * ALC bit=“1” 306 * 307 * This operation came from example code of 308 * "ASAHI KASEI AK4642" (japanese) manual p94. 309 */ 310 snd_soc_component_update_bits(component, SG_SL1, PMMP | MGAIN0, PMMP | MGAIN0); 311 snd_soc_component_write(component, TIMER, ZTM(0x3) | WTM(0x3)); 312 snd_soc_component_write(component, ALC_CTL1, ALC | LMTH0); 313 snd_soc_component_update_bits(component, PW_MGMT1, PMADL, PMADL); 314 snd_soc_component_update_bits(component, PW_MGMT3, PMADR, PMADR); 315 } 316 317 return 0; 318 } 319 320 static void ak4642_dai_shutdown(struct snd_pcm_substream *substream, 321 struct snd_soc_dai *dai) 322 { 323 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 324 struct snd_soc_component *component = dai->component; 325 326 if (is_play) { 327 } else { 328 /* stop stereo input */ 329 snd_soc_component_update_bits(component, PW_MGMT1, PMADL, 0); 330 snd_soc_component_update_bits(component, PW_MGMT3, PMADR, 0); 331 snd_soc_component_update_bits(component, ALC_CTL1, ALC, 0); 332 } 333 } 334 335 static int ak4642_dai_set_sysclk(struct snd_soc_dai *codec_dai, 336 int clk_id, unsigned int freq, int dir) 337 { 338 struct snd_soc_component *component = codec_dai->component; 339 struct ak4642_priv *priv = snd_soc_component_get_drvdata(component); 340 u8 pll; 341 int extended_freq = 0; 342 343 switch (freq) { 344 case 11289600: 345 pll = PLL2; 346 break; 347 case 12288000: 348 pll = PLL2 | PLL0; 349 break; 350 case 12000000: 351 pll = PLL2 | PLL1; 352 break; 353 case 24000000: 354 pll = PLL2 | PLL1 | PLL0; 355 break; 356 case 13500000: 357 pll = PLL3 | PLL2; 358 break; 359 case 27000000: 360 pll = PLL3 | PLL2 | PLL0; 361 break; 362 case 19200000: 363 pll = PLL3; 364 extended_freq = 1; 365 break; 366 case 13000000: 367 pll = PLL3 | PLL2 | PLL1; 368 extended_freq = 1; 369 break; 370 case 26000000: 371 pll = PLL3 | PLL2 | PLL1 | PLL0; 372 extended_freq = 1; 373 break; 374 default: 375 return -EINVAL; 376 } 377 378 if (extended_freq && !priv->drvdata->extended_frequencies) 379 return -EINVAL; 380 381 snd_soc_component_update_bits(component, MD_CTL1, PLL_MASK, pll); 382 383 return 0; 384 } 385 386 static int ak4642_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 387 { 388 struct snd_soc_component *component = dai->component; 389 u8 data; 390 u8 bcko; 391 392 data = MCKO | PMPLL; /* use MCKO */ 393 bcko = 0; 394 395 /* set master/slave audio interface */ 396 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 397 case SND_SOC_DAIFMT_CBM_CFM: 398 data |= MS; 399 bcko = BCKO_64; 400 break; 401 case SND_SOC_DAIFMT_CBS_CFS: 402 break; 403 default: 404 return -EINVAL; 405 } 406 snd_soc_component_update_bits(component, PW_MGMT2, MS | MCKO | PMPLL, data); 407 snd_soc_component_update_bits(component, MD_CTL1, BCKO_MASK, bcko); 408 409 /* format type */ 410 data = 0; 411 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 412 case SND_SOC_DAIFMT_LEFT_J: 413 data = LEFT_J; 414 break; 415 case SND_SOC_DAIFMT_I2S: 416 data = I2S; 417 break; 418 /* FIXME 419 * Please add RIGHT_J / DSP support here 420 */ 421 default: 422 return -EINVAL; 423 } 424 snd_soc_component_update_bits(component, MD_CTL1, DIF_MASK, data); 425 426 return 0; 427 } 428 429 static int ak4642_set_mcko(struct snd_soc_component *component, 430 u32 frequency) 431 { 432 static const u32 fs_list[] = { 433 [0] = 8000, 434 [1] = 12000, 435 [2] = 16000, 436 [3] = 24000, 437 [4] = 7350, 438 [5] = 11025, 439 [6] = 14700, 440 [7] = 22050, 441 [10] = 32000, 442 [11] = 48000, 443 [14] = 29400, 444 [15] = 44100, 445 }; 446 static const u32 ps_list[] = { 447 [0] = 256, 448 [1] = 128, 449 [2] = 64, 450 [3] = 32 451 }; 452 int ps, fs; 453 454 for (ps = 0; ps < ARRAY_SIZE(ps_list); ps++) { 455 for (fs = 0; fs < ARRAY_SIZE(fs_list); fs++) { 456 if (frequency == ps_list[ps] * fs_list[fs]) { 457 snd_soc_component_write(component, MD_CTL2, 458 PSs(ps) | FSs(fs)); 459 return 0; 460 } 461 } 462 } 463 464 return 0; 465 } 466 467 static int ak4642_dai_hw_params(struct snd_pcm_substream *substream, 468 struct snd_pcm_hw_params *params, 469 struct snd_soc_dai *dai) 470 { 471 struct snd_soc_component *component = dai->component; 472 struct ak4642_priv *priv = snd_soc_component_get_drvdata(component); 473 u32 rate = clk_get_rate(priv->mcko); 474 475 if (!rate) 476 rate = params_rate(params) * 256; 477 478 return ak4642_set_mcko(component, rate); 479 } 480 481 static int ak4642_set_bias_level(struct snd_soc_component *component, 482 enum snd_soc_bias_level level) 483 { 484 switch (level) { 485 case SND_SOC_BIAS_OFF: 486 snd_soc_component_write(component, PW_MGMT1, 0x00); 487 break; 488 default: 489 snd_soc_component_update_bits(component, PW_MGMT1, PMVCM, PMVCM); 490 break; 491 } 492 493 return 0; 494 } 495 496 static const struct snd_soc_dai_ops ak4642_dai_ops = { 497 .startup = ak4642_dai_startup, 498 .shutdown = ak4642_dai_shutdown, 499 .set_sysclk = ak4642_dai_set_sysclk, 500 .set_fmt = ak4642_dai_set_fmt, 501 .hw_params = ak4642_dai_hw_params, 502 }; 503 504 static struct snd_soc_dai_driver ak4642_dai = { 505 .name = "ak4642-hifi", 506 .playback = { 507 .stream_name = "Playback", 508 .channels_min = 2, 509 .channels_max = 2, 510 .rates = SNDRV_PCM_RATE_8000_48000, 511 .formats = SNDRV_PCM_FMTBIT_S16_LE }, 512 .capture = { 513 .stream_name = "Capture", 514 .channels_min = 2, 515 .channels_max = 2, 516 .rates = SNDRV_PCM_RATE_8000_48000, 517 .formats = SNDRV_PCM_FMTBIT_S16_LE }, 518 .ops = &ak4642_dai_ops, 519 .symmetric_rate = 1, 520 }; 521 522 static int ak4642_suspend(struct snd_soc_component *component) 523 { 524 struct regmap *regmap = dev_get_regmap(component->dev, NULL); 525 526 regcache_cache_only(regmap, true); 527 regcache_mark_dirty(regmap); 528 return 0; 529 } 530 531 static int ak4642_resume(struct snd_soc_component *component) 532 { 533 struct regmap *regmap = dev_get_regmap(component->dev, NULL); 534 535 regcache_cache_only(regmap, false); 536 regcache_sync(regmap); 537 return 0; 538 } 539 static int ak4642_probe(struct snd_soc_component *component) 540 { 541 struct ak4642_priv *priv = snd_soc_component_get_drvdata(component); 542 543 if (priv->mcko) 544 ak4642_set_mcko(component, clk_get_rate(priv->mcko)); 545 546 return 0; 547 } 548 549 static const struct snd_soc_component_driver soc_component_dev_ak4642 = { 550 .probe = ak4642_probe, 551 .suspend = ak4642_suspend, 552 .resume = ak4642_resume, 553 .set_bias_level = ak4642_set_bias_level, 554 .controls = ak4642_snd_controls, 555 .num_controls = ARRAY_SIZE(ak4642_snd_controls), 556 .dapm_widgets = ak4642_dapm_widgets, 557 .num_dapm_widgets = ARRAY_SIZE(ak4642_dapm_widgets), 558 .dapm_routes = ak4642_intercon, 559 .num_dapm_routes = ARRAY_SIZE(ak4642_intercon), 560 .idle_bias_on = 1, 561 .endianness = 1, 562 .non_legacy_dai_naming = 1, 563 }; 564 565 static const struct regmap_config ak4642_regmap = { 566 .reg_bits = 8, 567 .val_bits = 8, 568 .max_register = FIL1_3, 569 .reg_defaults = ak4642_reg, 570 .num_reg_defaults = NUM_AK4642_REG_DEFAULTS, 571 .cache_type = REGCACHE_RBTREE, 572 }; 573 574 static const struct regmap_config ak4643_regmap = { 575 .reg_bits = 8, 576 .val_bits = 8, 577 .max_register = SPK_MS, 578 .reg_defaults = ak4643_reg, 579 .num_reg_defaults = ARRAY_SIZE(ak4643_reg), 580 .cache_type = REGCACHE_RBTREE, 581 }; 582 583 static const struct regmap_config ak4648_regmap = { 584 .reg_bits = 8, 585 .val_bits = 8, 586 .max_register = EQ_FBEQE, 587 .reg_defaults = ak4648_reg, 588 .num_reg_defaults = ARRAY_SIZE(ak4648_reg), 589 .cache_type = REGCACHE_RBTREE, 590 }; 591 592 static const struct ak4642_drvdata ak4642_drvdata = { 593 .regmap_config = &ak4642_regmap, 594 }; 595 596 static const struct ak4642_drvdata ak4643_drvdata = { 597 .regmap_config = &ak4643_regmap, 598 }; 599 600 static const struct ak4642_drvdata ak4648_drvdata = { 601 .regmap_config = &ak4648_regmap, 602 .extended_frequencies = 1, 603 }; 604 605 #ifdef CONFIG_COMMON_CLK 606 static struct clk *ak4642_of_parse_mcko(struct device *dev) 607 { 608 struct device_node *np = dev->of_node; 609 struct clk *clk; 610 const char *clk_name = np->name; 611 const char *parent_clk_name = NULL; 612 u32 rate; 613 614 if (of_property_read_u32(np, "clock-frequency", &rate)) 615 return NULL; 616 617 if (of_property_read_bool(np, "clocks")) 618 parent_clk_name = of_clk_get_parent_name(np, 0); 619 620 of_property_read_string(np, "clock-output-names", &clk_name); 621 622 clk = clk_register_fixed_rate(dev, clk_name, parent_clk_name, 0, rate); 623 if (!IS_ERR(clk)) 624 of_clk_add_provider(np, of_clk_src_simple_get, clk); 625 626 return clk; 627 } 628 #else 629 #define ak4642_of_parse_mcko(d) 0 630 #endif 631 632 static const struct of_device_id ak4642_of_match[]; 633 static int ak4642_i2c_probe(struct i2c_client *i2c, 634 const struct i2c_device_id *id) 635 { 636 struct device *dev = &i2c->dev; 637 struct device_node *np = dev->of_node; 638 const struct ak4642_drvdata *drvdata = NULL; 639 struct regmap *regmap; 640 struct ak4642_priv *priv; 641 struct clk *mcko = NULL; 642 643 if (np) { 644 const struct of_device_id *of_id; 645 646 mcko = ak4642_of_parse_mcko(dev); 647 if (IS_ERR(mcko)) 648 mcko = NULL; 649 650 of_id = of_match_device(ak4642_of_match, dev); 651 if (of_id) 652 drvdata = of_id->data; 653 } else { 654 drvdata = (const struct ak4642_drvdata *)id->driver_data; 655 } 656 657 if (!drvdata) { 658 dev_err(dev, "Unknown device type\n"); 659 return -EINVAL; 660 } 661 662 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 663 if (!priv) 664 return -ENOMEM; 665 666 priv->drvdata = drvdata; 667 priv->mcko = mcko; 668 669 i2c_set_clientdata(i2c, priv); 670 671 regmap = devm_regmap_init_i2c(i2c, drvdata->regmap_config); 672 if (IS_ERR(regmap)) 673 return PTR_ERR(regmap); 674 675 return devm_snd_soc_register_component(dev, 676 &soc_component_dev_ak4642, &ak4642_dai, 1); 677 } 678 679 static const struct of_device_id ak4642_of_match[] = { 680 { .compatible = "asahi-kasei,ak4642", .data = &ak4642_drvdata}, 681 { .compatible = "asahi-kasei,ak4643", .data = &ak4643_drvdata}, 682 { .compatible = "asahi-kasei,ak4648", .data = &ak4648_drvdata}, 683 {}, 684 }; 685 MODULE_DEVICE_TABLE(of, ak4642_of_match); 686 687 static const struct i2c_device_id ak4642_i2c_id[] = { 688 { "ak4642", (kernel_ulong_t)&ak4642_drvdata }, 689 { "ak4643", (kernel_ulong_t)&ak4643_drvdata }, 690 { "ak4648", (kernel_ulong_t)&ak4648_drvdata }, 691 { } 692 }; 693 MODULE_DEVICE_TABLE(i2c, ak4642_i2c_id); 694 695 static struct i2c_driver ak4642_i2c_driver = { 696 .driver = { 697 .name = "ak4642-codec", 698 .of_match_table = ak4642_of_match, 699 }, 700 .probe = ak4642_i2c_probe, 701 .id_table = ak4642_i2c_id, 702 }; 703 704 module_i2c_driver(ak4642_i2c_driver); 705 706 MODULE_DESCRIPTION("Soc AK4642 driver"); 707 MODULE_AUTHOR("Kuninori Morimoto <morimoto.kuninori@renesas.com>"); 708 MODULE_LICENSE("GPL v2"); 709