1// SPDX-License-Identifier: GPL-2.0 2// 3// ak4613.c -- Asahi Kasei ALSA Soc Audio driver 4// 5// Copyright (C) 2015 Renesas Electronics Corporation 6// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> 7// 8// Based on ak4642.c by Kuninori Morimoto 9// Based on wm8731.c by Richard Purdie 10// Based on ak4535.c by Richard Purdie 11// Based on wm8753.c by Liam Girdwood 12 13#include <linux/clk.h> 14#include <linux/delay.h> 15#include <linux/i2c.h> 16#include <linux/slab.h> 17#include <linux/of_device.h> 18#include <linux/module.h> 19#include <linux/regmap.h> 20#include <sound/soc.h> 21#include <sound/pcm_params.h> 22#include <sound/tlv.h> 23 24#define PW_MGMT1 0x00 /* Power Management 1 */ 25#define PW_MGMT2 0x01 /* Power Management 2 */ 26#define PW_MGMT3 0x02 /* Power Management 3 */ 27#define CTRL1 0x03 /* Control 1 */ 28#define CTRL2 0x04 /* Control 2 */ 29#define DEMP1 0x05 /* De-emphasis1 */ 30#define DEMP2 0x06 /* De-emphasis2 */ 31#define OFD 0x07 /* Overflow Detect */ 32#define ZRD 0x08 /* Zero Detect */ 33#define ICTRL 0x09 /* Input Control */ 34#define OCTRL 0x0a /* Output Control */ 35#define LOUT1 0x0b /* LOUT1 Volume Control */ 36#define ROUT1 0x0c /* ROUT1 Volume Control */ 37#define LOUT2 0x0d /* LOUT2 Volume Control */ 38#define ROUT2 0x0e /* ROUT2 Volume Control */ 39#define LOUT3 0x0f /* LOUT3 Volume Control */ 40#define ROUT3 0x10 /* ROUT3 Volume Control */ 41#define LOUT4 0x11 /* LOUT4 Volume Control */ 42#define ROUT4 0x12 /* ROUT4 Volume Control */ 43#define LOUT5 0x13 /* LOUT5 Volume Control */ 44#define ROUT5 0x14 /* ROUT5 Volume Control */ 45#define LOUT6 0x15 /* LOUT6 Volume Control */ 46#define ROUT6 0x16 /* ROUT6 Volume Control */ 47 48/* PW_MGMT1 */ 49#define RSTN BIT(0) 50#define PMDAC BIT(1) 51#define PMADC BIT(2) 52#define PMVR BIT(3) 53 54/* PW_MGMT2 */ 55#define PMAD_ALL 0x7 56 57/* PW_MGMT3 */ 58#define PMDA_ALL 0x3f 59 60/* CTRL1 */ 61#define DIF0 BIT(3) 62#define DIF1 BIT(4) 63#define DIF2 BIT(5) 64#define TDM0 BIT(6) 65#define TDM1 BIT(7) 66#define NO_FMT (0xff) 67#define FMT_MASK (0xf8) 68 69/* CTRL2 */ 70#define DFS_MASK (3 << 2) 71#define DFS_NORMAL_SPEED (0 << 2) 72#define DFS_DOUBLE_SPEED (1 << 2) 73#define DFS_QUAD_SPEED (2 << 2) 74 75/* ICTRL */ 76#define ICTRL_MASK (0x3) 77 78/* OCTRL */ 79#define OCTRL_MASK (0x3F) 80 81struct ak4613_formats { 82 unsigned int width; 83 unsigned int fmt; 84}; 85 86struct ak4613_interface { 87 struct ak4613_formats capture; 88 struct ak4613_formats playback; 89}; 90 91struct ak4613_priv { 92 struct mutex lock; 93 const struct ak4613_interface *iface; 94 struct snd_pcm_hw_constraint_list constraint; 95 struct work_struct dummy_write_work; 96 struct snd_soc_component *component; 97 unsigned int rate; 98 unsigned int sysclk; 99 100 unsigned int fmt; 101 u8 oc; 102 u8 ic; 103 int cnt; 104}; 105 106/* 107 * Playback Volume 108 * 109 * max : 0x00 : 0 dB 110 * ( 0.5 dB step ) 111 * min : 0xFE : -127.0 dB 112 * mute: 0xFF 113 */ 114static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1); 115 116static const struct snd_kcontrol_new ak4613_snd_controls[] = { 117 SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1, 118 0, 0xFF, 1, out_tlv), 119 SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2, 120 0, 0xFF, 1, out_tlv), 121 SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3, 122 0, 0xFF, 1, out_tlv), 123 SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4, 124 0, 0xFF, 1, out_tlv), 125 SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5, 126 0, 0xFF, 1, out_tlv), 127 SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6, 128 0, 0xFF, 1, out_tlv), 129}; 130 131static const struct reg_default ak4613_reg[] = { 132 { 0x0, 0x0f }, { 0x1, 0x07 }, { 0x2, 0x3f }, { 0x3, 0x20 }, 133 { 0x4, 0x20 }, { 0x5, 0x55 }, { 0x6, 0x05 }, { 0x7, 0x07 }, 134 { 0x8, 0x0f }, { 0x9, 0x07 }, { 0xa, 0x3f }, { 0xb, 0x00 }, 135 { 0xc, 0x00 }, { 0xd, 0x00 }, { 0xe, 0x00 }, { 0xf, 0x00 }, 136 { 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 }, 137 { 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 }, 138}; 139 140#define AUDIO_IFACE_TO_VAL(fmts) ((fmts - ak4613_iface) << 3) 141#define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt } 142static const struct ak4613_interface ak4613_iface[] = { 143 /* capture */ /* playback */ 144 /* [0] - [2] are not supported */ 145 [3] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(24, LEFT_J) }, 146 [4] = { AUDIO_IFACE(24, I2S), AUDIO_IFACE(24, I2S) }, 147}; 148 149static const struct regmap_config ak4613_regmap_cfg = { 150 .reg_bits = 8, 151 .val_bits = 8, 152 .max_register = 0x16, 153 .reg_defaults = ak4613_reg, 154 .num_reg_defaults = ARRAY_SIZE(ak4613_reg), 155 .cache_type = REGCACHE_RBTREE, 156}; 157 158static const struct of_device_id ak4613_of_match[] = { 159 { .compatible = "asahi-kasei,ak4613", .data = &ak4613_regmap_cfg }, 160 {}, 161}; 162MODULE_DEVICE_TABLE(of, ak4613_of_match); 163 164static const struct i2c_device_id ak4613_i2c_id[] = { 165 { "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg }, 166 { } 167}; 168MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id); 169 170static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = { 171 172 /* Outputs */ 173 SND_SOC_DAPM_OUTPUT("LOUT1"), 174 SND_SOC_DAPM_OUTPUT("LOUT2"), 175 SND_SOC_DAPM_OUTPUT("LOUT3"), 176 SND_SOC_DAPM_OUTPUT("LOUT4"), 177 SND_SOC_DAPM_OUTPUT("LOUT5"), 178 SND_SOC_DAPM_OUTPUT("LOUT6"), 179 180 SND_SOC_DAPM_OUTPUT("ROUT1"), 181 SND_SOC_DAPM_OUTPUT("ROUT2"), 182 SND_SOC_DAPM_OUTPUT("ROUT3"), 183 SND_SOC_DAPM_OUTPUT("ROUT4"), 184 SND_SOC_DAPM_OUTPUT("ROUT5"), 185 SND_SOC_DAPM_OUTPUT("ROUT6"), 186 187 /* Inputs */ 188 SND_SOC_DAPM_INPUT("LIN1"), 189 SND_SOC_DAPM_INPUT("LIN2"), 190 191 SND_SOC_DAPM_INPUT("RIN1"), 192 SND_SOC_DAPM_INPUT("RIN2"), 193 194 /* DAC */ 195 SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0), 196 SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0), 197 SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0), 198 SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0), 199 SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0), 200 SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0), 201 202 /* ADC */ 203 SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0), 204 SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0), 205}; 206 207static const struct snd_soc_dapm_route ak4613_intercon[] = { 208 {"LOUT1", NULL, "DAC1"}, 209 {"LOUT2", NULL, "DAC2"}, 210 {"LOUT3", NULL, "DAC3"}, 211 {"LOUT4", NULL, "DAC4"}, 212 {"LOUT5", NULL, "DAC5"}, 213 {"LOUT6", NULL, "DAC6"}, 214 215 {"ROUT1", NULL, "DAC1"}, 216 {"ROUT2", NULL, "DAC2"}, 217 {"ROUT3", NULL, "DAC3"}, 218 {"ROUT4", NULL, "DAC4"}, 219 {"ROUT5", NULL, "DAC5"}, 220 {"ROUT6", NULL, "DAC6"}, 221 222 {"DAC1", NULL, "Playback"}, 223 {"DAC2", NULL, "Playback"}, 224 {"DAC3", NULL, "Playback"}, 225 {"DAC4", NULL, "Playback"}, 226 {"DAC5", NULL, "Playback"}, 227 {"DAC6", NULL, "Playback"}, 228 229 {"Capture", NULL, "ADC1"}, 230 {"Capture", NULL, "ADC2"}, 231 232 {"ADC1", NULL, "LIN1"}, 233 {"ADC2", NULL, "LIN2"}, 234 235 {"ADC1", NULL, "RIN1"}, 236 {"ADC2", NULL, "RIN2"}, 237}; 238 239static void ak4613_dai_shutdown(struct snd_pcm_substream *substream, 240 struct snd_soc_dai *dai) 241{ 242 struct snd_soc_component *component = dai->component; 243 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component); 244 struct device *dev = component->dev; 245 246 mutex_lock(&priv->lock); 247 priv->cnt--; 248 if (priv->cnt < 0) { 249 dev_err(dev, "unexpected counter error\n"); 250 priv->cnt = 0; 251 } 252 if (!priv->cnt) 253 priv->iface = NULL; 254 mutex_unlock(&priv->lock); 255} 256 257static void ak4613_hw_constraints(struct ak4613_priv *priv, 258 struct snd_pcm_runtime *runtime) 259{ 260 static const unsigned int ak4613_rates[] = { 261 32000, 262 44100, 263 48000, 264 64000, 265 88200, 266 96000, 267 176400, 268 192000, 269 }; 270 struct snd_pcm_hw_constraint_list *constraint = &priv->constraint; 271 unsigned int fs; 272 int i; 273 274 constraint->list = ak4613_rates; 275 constraint->mask = 0; 276 constraint->count = 0; 277 278 /* 279 * Slave Mode 280 * Normal: [32kHz, 48kHz] : 256fs,384fs or 512fs 281 * Double: [64kHz, 96kHz] : 256fs 282 * Quad : [128kHz,192kHz]: 128fs 283 * 284 * Master mode 285 * Normal: [32kHz, 48kHz] : 256fs or 512fs 286 * Double: [64kHz, 96kHz] : 256fs 287 * Quad : [128kHz,192kHz]: 128fs 288 */ 289 for (i = 0; i < ARRAY_SIZE(ak4613_rates); i++) { 290 /* minimum fs on each range */ 291 fs = (ak4613_rates[i] <= 96000) ? 256 : 128; 292 293 if (priv->sysclk >= ak4613_rates[i] * fs) 294 constraint->count = i + 1; 295 } 296 297 snd_pcm_hw_constraint_list(runtime, 0, 298 SNDRV_PCM_HW_PARAM_RATE, constraint); 299} 300 301static int ak4613_dai_startup(struct snd_pcm_substream *substream, 302 struct snd_soc_dai *dai) 303{ 304 struct snd_soc_component *component = dai->component; 305 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component); 306 307 priv->cnt++; 308 309 ak4613_hw_constraints(priv, substream->runtime); 310 311 return 0; 312} 313 314static int ak4613_dai_set_sysclk(struct snd_soc_dai *codec_dai, 315 int clk_id, unsigned int freq, int dir) 316{ 317 struct snd_soc_component *component = codec_dai->component; 318 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component); 319 320 priv->sysclk = freq; 321 322 return 0; 323} 324 325static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 326{ 327 struct snd_soc_component *component = dai->component; 328 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component); 329 330 fmt &= SND_SOC_DAIFMT_FORMAT_MASK; 331 332 switch (fmt) { 333 case SND_SOC_DAIFMT_LEFT_J: 334 case SND_SOC_DAIFMT_I2S: 335 priv->fmt = fmt; 336 break; 337 default: 338 return -EINVAL; 339 } 340 341 return 0; 342} 343 344static bool ak4613_dai_fmt_matching(const struct ak4613_interface *iface, 345 int is_play, 346 unsigned int fmt, unsigned int width) 347{ 348 const struct ak4613_formats *fmts; 349 350 fmts = (is_play) ? &iface->playback : &iface->capture; 351 352 if (fmts->fmt != fmt) 353 return false; 354 355 if (fmts->width != width) 356 return false; 357 358 return true; 359} 360 361static int ak4613_dai_hw_params(struct snd_pcm_substream *substream, 362 struct snd_pcm_hw_params *params, 363 struct snd_soc_dai *dai) 364{ 365 struct snd_soc_component *component = dai->component; 366 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component); 367 const struct ak4613_interface *iface; 368 struct device *dev = component->dev; 369 unsigned int width = params_width(params); 370 unsigned int fmt = priv->fmt; 371 unsigned int rate; 372 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 373 int i, ret; 374 u8 fmt_ctrl, ctrl2; 375 376 rate = params_rate(params); 377 switch (rate) { 378 case 32000: 379 case 44100: 380 case 48000: 381 ctrl2 = DFS_NORMAL_SPEED; 382 break; 383 case 64000: 384 case 88200: 385 case 96000: 386 ctrl2 = DFS_DOUBLE_SPEED; 387 break; 388 case 176400: 389 case 192000: 390 ctrl2 = DFS_QUAD_SPEED; 391 break; 392 default: 393 return -EINVAL; 394 } 395 priv->rate = rate; 396 397 /* 398 * FIXME 399 * 400 * It doesn't support TDM at this point 401 */ 402 fmt_ctrl = NO_FMT; 403 ret = -EINVAL; 404 iface = NULL; 405 406 mutex_lock(&priv->lock); 407 if (priv->iface) { 408 if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width)) 409 iface = priv->iface; 410 } else { 411 for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) { 412 if (!ak4613_dai_fmt_matching(ak4613_iface + i, 413 is_play, 414 fmt, width)) 415 continue; 416 iface = ak4613_iface + i; 417 break; 418 } 419 } 420 421 if ((priv->iface == NULL) || 422 (priv->iface == iface)) { 423 priv->iface = iface; 424 ret = 0; 425 } 426 mutex_unlock(&priv->lock); 427 428 if (ret < 0) 429 goto hw_params_end; 430 431 fmt_ctrl = AUDIO_IFACE_TO_VAL(iface); 432 433 snd_soc_component_update_bits(component, CTRL1, FMT_MASK, fmt_ctrl); 434 snd_soc_component_update_bits(component, CTRL2, DFS_MASK, ctrl2); 435 436 snd_soc_component_update_bits(component, ICTRL, ICTRL_MASK, priv->ic); 437 snd_soc_component_update_bits(component, OCTRL, OCTRL_MASK, priv->oc); 438 439hw_params_end: 440 if (ret < 0) 441 dev_warn(dev, "unsupported data width/format combination\n"); 442 443 return ret; 444} 445 446static int ak4613_set_bias_level(struct snd_soc_component *component, 447 enum snd_soc_bias_level level) 448{ 449 u8 mgmt1 = 0; 450 451 switch (level) { 452 case SND_SOC_BIAS_ON: 453 mgmt1 |= RSTN; 454 fallthrough; 455 case SND_SOC_BIAS_PREPARE: 456 mgmt1 |= PMADC | PMDAC; 457 fallthrough; 458 case SND_SOC_BIAS_STANDBY: 459 mgmt1 |= PMVR; 460 fallthrough; 461 case SND_SOC_BIAS_OFF: 462 default: 463 break; 464 } 465 466 snd_soc_component_write(component, PW_MGMT1, mgmt1); 467 468 return 0; 469} 470 471static void ak4613_dummy_write(struct work_struct *work) 472{ 473 struct ak4613_priv *priv = container_of(work, 474 struct ak4613_priv, 475 dummy_write_work); 476 struct snd_soc_component *component = priv->component; 477 unsigned int mgmt1; 478 unsigned int mgmt3; 479 480 /* 481 * PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks 482 * 483 * Note 484 * 485 * To avoid extra delay, we want to avoid preemption here, 486 * but we can't. Because it uses I2C access which is using IRQ 487 * and sleep. Thus, delay might be more than 5 LR clocks 488 * see also 489 * ak4613_dai_trigger() 490 */ 491 udelay(5000000 / priv->rate); 492 493 mgmt1 = snd_soc_component_read(component, PW_MGMT1); 494 mgmt3 = snd_soc_component_read(component, PW_MGMT3); 495 496 snd_soc_component_write(component, PW_MGMT1, mgmt1); 497 snd_soc_component_write(component, PW_MGMT3, mgmt3); 498} 499 500static int ak4613_dai_trigger(struct snd_pcm_substream *substream, int cmd, 501 struct snd_soc_dai *dai) 502{ 503 struct snd_soc_component *component = dai->component; 504 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component); 505 506 /* 507 * FIXME 508 * 509 * PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks 510 * from Power Down Release. Otherwise, Playback volume will be 0dB. 511 * To avoid complex multiple delay/dummy_write method from 512 * ak4613_set_bias_level() / SND_SOC_DAPM_DAC_E("DACx", ...), 513 * call it once here. 514 * 515 * But, unfortunately, we can't "write" here because here is atomic 516 * context (It uses I2C access for writing). 517 * Thus, use schedule_work() to switching to normal context 518 * immediately. 519 * 520 * Note 521 * 522 * Calling ak4613_dummy_write() function might be delayed. 523 * In such case, ak4613 volume might be temporarily 0dB when 524 * beggining of playback. 525 * see also 526 * ak4613_dummy_write() 527 */ 528 529 if ((cmd != SNDRV_PCM_TRIGGER_START) && 530 (cmd != SNDRV_PCM_TRIGGER_RESUME)) 531 return 0; 532 533 if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK) 534 return 0; 535 536 priv->component = component; 537 schedule_work(&priv->dummy_write_work); 538 539 return 0; 540} 541 542static const struct snd_soc_dai_ops ak4613_dai_ops = { 543 .startup = ak4613_dai_startup, 544 .shutdown = ak4613_dai_shutdown, 545 .set_sysclk = ak4613_dai_set_sysclk, 546 .set_fmt = ak4613_dai_set_fmt, 547 .trigger = ak4613_dai_trigger, 548 .hw_params = ak4613_dai_hw_params, 549}; 550 551#define AK4613_PCM_RATE (SNDRV_PCM_RATE_32000 |\ 552 SNDRV_PCM_RATE_44100 |\ 553 SNDRV_PCM_RATE_48000 |\ 554 SNDRV_PCM_RATE_64000 |\ 555 SNDRV_PCM_RATE_88200 |\ 556 SNDRV_PCM_RATE_96000 |\ 557 SNDRV_PCM_RATE_176400 |\ 558 SNDRV_PCM_RATE_192000) 559#define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S24_LE) 560 561static struct snd_soc_dai_driver ak4613_dai = { 562 .name = "ak4613-hifi", 563 .playback = { 564 .stream_name = "Playback", 565 .channels_min = 2, 566 .channels_max = 2, 567 .rates = AK4613_PCM_RATE, 568 .formats = AK4613_PCM_FMTBIT, 569 }, 570 .capture = { 571 .stream_name = "Capture", 572 .channels_min = 2, 573 .channels_max = 2, 574 .rates = AK4613_PCM_RATE, 575 .formats = AK4613_PCM_FMTBIT, 576 }, 577 .ops = &ak4613_dai_ops, 578 .symmetric_rates = 1, 579}; 580 581static int ak4613_suspend(struct snd_soc_component *component) 582{ 583 struct regmap *regmap = dev_get_regmap(component->dev, NULL); 584 585 regcache_cache_only(regmap, true); 586 regcache_mark_dirty(regmap); 587 return 0; 588} 589 590static int ak4613_resume(struct snd_soc_component *component) 591{ 592 struct regmap *regmap = dev_get_regmap(component->dev, NULL); 593 594 regcache_cache_only(regmap, false); 595 return regcache_sync(regmap); 596} 597 598static const struct snd_soc_component_driver soc_component_dev_ak4613 = { 599 .suspend = ak4613_suspend, 600 .resume = ak4613_resume, 601 .set_bias_level = ak4613_set_bias_level, 602 .controls = ak4613_snd_controls, 603 .num_controls = ARRAY_SIZE(ak4613_snd_controls), 604 .dapm_widgets = ak4613_dapm_widgets, 605 .num_dapm_widgets = ARRAY_SIZE(ak4613_dapm_widgets), 606 .dapm_routes = ak4613_intercon, 607 .num_dapm_routes = ARRAY_SIZE(ak4613_intercon), 608 .idle_bias_on = 1, 609 .endianness = 1, 610 .non_legacy_dai_naming = 1, 611}; 612 613static void ak4613_parse_of(struct ak4613_priv *priv, 614 struct device *dev) 615{ 616 struct device_node *np = dev->of_node; 617 char prop[32]; 618 int i; 619 620 /* Input 1 - 2 */ 621 for (i = 0; i < 2; i++) { 622 snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1); 623 if (!of_get_property(np, prop, NULL)) 624 priv->ic |= 1 << i; 625 } 626 627 /* Output 1 - 6 */ 628 for (i = 0; i < 6; i++) { 629 snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1); 630 if (!of_get_property(np, prop, NULL)) 631 priv->oc |= 1 << i; 632 } 633} 634 635static int ak4613_i2c_probe(struct i2c_client *i2c, 636 const struct i2c_device_id *id) 637{ 638 struct device *dev = &i2c->dev; 639 struct device_node *np = dev->of_node; 640 const struct regmap_config *regmap_cfg; 641 struct regmap *regmap; 642 struct ak4613_priv *priv; 643 644 regmap_cfg = NULL; 645 if (np) { 646 const struct of_device_id *of_id; 647 648 of_id = of_match_device(ak4613_of_match, dev); 649 if (of_id) 650 regmap_cfg = of_id->data; 651 } else { 652 regmap_cfg = (const struct regmap_config *)id->driver_data; 653 } 654 655 if (!regmap_cfg) 656 return -EINVAL; 657 658 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 659 if (!priv) 660 return -ENOMEM; 661 662 ak4613_parse_of(priv, dev); 663 664 priv->iface = NULL; 665 priv->cnt = 0; 666 priv->sysclk = 0; 667 INIT_WORK(&priv->dummy_write_work, ak4613_dummy_write); 668 669 mutex_init(&priv->lock); 670 671 i2c_set_clientdata(i2c, priv); 672 673 regmap = devm_regmap_init_i2c(i2c, regmap_cfg); 674 if (IS_ERR(regmap)) 675 return PTR_ERR(regmap); 676 677 return devm_snd_soc_register_component(dev, &soc_component_dev_ak4613, 678 &ak4613_dai, 1); 679} 680 681static int ak4613_i2c_remove(struct i2c_client *client) 682{ 683 return 0; 684} 685 686static struct i2c_driver ak4613_i2c_driver = { 687 .driver = { 688 .name = "ak4613-codec", 689 .of_match_table = ak4613_of_match, 690 }, 691 .probe = ak4613_i2c_probe, 692 .remove = ak4613_i2c_remove, 693 .id_table = ak4613_i2c_id, 694}; 695 696module_i2c_driver(ak4613_i2c_driver); 697 698MODULE_DESCRIPTION("Soc AK4613 driver"); 699MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 700MODULE_LICENSE("GPL v2"); 701