1 /* 2 * ak4613.c -- Asahi Kasei ALSA Soc Audio driver 3 * 4 * Copyright (C) 2015 Renesas Electronics Corporation 5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> 6 * 7 * Based on ak4642.c by Kuninori Morimoto 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 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License version 2 as 14 * published by the Free Software Foundation. 15 */ 16 17 #include <linux/clk.h> 18 #include <linux/delay.h> 19 #include <linux/i2c.h> 20 #include <linux/slab.h> 21 #include <linux/of_device.h> 22 #include <linux/module.h> 23 #include <linux/regmap.h> 24 #include <sound/soc.h> 25 #include <sound/pcm_params.h> 26 #include <sound/tlv.h> 27 28 #define PW_MGMT1 0x00 /* Power Management 1 */ 29 #define PW_MGMT2 0x01 /* Power Management 2 */ 30 #define PW_MGMT3 0x02 /* Power Management 3 */ 31 #define CTRL1 0x03 /* Control 1 */ 32 #define CTRL2 0x04 /* Control 2 */ 33 #define DEMP1 0x05 /* De-emphasis1 */ 34 #define DEMP2 0x06 /* De-emphasis2 */ 35 #define OFD 0x07 /* Overflow Detect */ 36 #define ZRD 0x08 /* Zero Detect */ 37 #define ICTRL 0x09 /* Input Control */ 38 #define OCTRL 0x0a /* Output Control */ 39 #define LOUT1 0x0b /* LOUT1 Volume Control */ 40 #define ROUT1 0x0c /* ROUT1 Volume Control */ 41 #define LOUT2 0x0d /* LOUT2 Volume Control */ 42 #define ROUT2 0x0e /* ROUT2 Volume Control */ 43 #define LOUT3 0x0f /* LOUT3 Volume Control */ 44 #define ROUT3 0x10 /* ROUT3 Volume Control */ 45 #define LOUT4 0x11 /* LOUT4 Volume Control */ 46 #define ROUT4 0x12 /* ROUT4 Volume Control */ 47 #define LOUT5 0x13 /* LOUT5 Volume Control */ 48 #define ROUT5 0x14 /* ROUT5 Volume Control */ 49 #define LOUT6 0x15 /* LOUT6 Volume Control */ 50 #define ROUT6 0x16 /* ROUT6 Volume Control */ 51 52 /* PW_MGMT1 */ 53 #define RSTN BIT(0) 54 #define PMDAC BIT(1) 55 #define PMADC BIT(2) 56 #define PMVR BIT(3) 57 58 /* PW_MGMT2 */ 59 #define PMAD_ALL 0x7 60 61 /* PW_MGMT3 */ 62 #define PMDA_ALL 0x3f 63 64 /* CTRL1 */ 65 #define DIF0 BIT(3) 66 #define DIF1 BIT(4) 67 #define DIF2 BIT(5) 68 #define TDM0 BIT(6) 69 #define TDM1 BIT(7) 70 #define NO_FMT (0xff) 71 #define FMT_MASK (0xf8) 72 73 /* CTRL2 */ 74 #define DFS_MASK (3 << 2) 75 #define DFS_NORMAL_SPEED (0 << 2) 76 #define DFS_DOUBLE_SPEED (1 << 2) 77 #define DFS_QUAD_SPEED (2 << 2) 78 79 /* ICTRL */ 80 #define ICTRL_MASK (0x3) 81 82 /* OCTRL */ 83 #define OCTRL_MASK (0x3F) 84 85 struct ak4613_formats { 86 unsigned int width; 87 unsigned int fmt; 88 }; 89 90 struct ak4613_interface { 91 struct ak4613_formats capture; 92 struct ak4613_formats playback; 93 }; 94 95 struct ak4613_priv { 96 struct mutex lock; 97 const struct ak4613_interface *iface; 98 struct snd_pcm_hw_constraint_list constraint; 99 struct work_struct dummy_write_work; 100 struct snd_soc_component *component; 101 unsigned int rate; 102 unsigned int sysclk; 103 104 unsigned int fmt; 105 u8 oc; 106 u8 ic; 107 int cnt; 108 }; 109 110 /* 111 * Playback Volume 112 * 113 * max : 0x00 : 0 dB 114 * ( 0.5 dB step ) 115 * min : 0xFE : -127.0 dB 116 * mute: 0xFF 117 */ 118 static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1); 119 120 static const struct snd_kcontrol_new ak4613_snd_controls[] = { 121 SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1, 122 0, 0xFF, 1, out_tlv), 123 SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2, 124 0, 0xFF, 1, out_tlv), 125 SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3, 126 0, 0xFF, 1, out_tlv), 127 SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4, 128 0, 0xFF, 1, out_tlv), 129 SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5, 130 0, 0xFF, 1, out_tlv), 131 SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6, 132 0, 0xFF, 1, out_tlv), 133 }; 134 135 static const struct reg_default ak4613_reg[] = { 136 { 0x0, 0x0f }, { 0x1, 0x07 }, { 0x2, 0x3f }, { 0x3, 0x20 }, 137 { 0x4, 0x20 }, { 0x5, 0x55 }, { 0x6, 0x05 }, { 0x7, 0x07 }, 138 { 0x8, 0x0f }, { 0x9, 0x07 }, { 0xa, 0x3f }, { 0xb, 0x00 }, 139 { 0xc, 0x00 }, { 0xd, 0x00 }, { 0xe, 0x00 }, { 0xf, 0x00 }, 140 { 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 }, 141 { 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 }, 142 }; 143 144 #define AUDIO_IFACE_TO_VAL(fmts) ((fmts - ak4613_iface) << 3) 145 #define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt } 146 static const struct ak4613_interface ak4613_iface[] = { 147 /* capture */ /* playback */ 148 /* [0] - [2] are not supported */ 149 [3] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(24, LEFT_J) }, 150 [4] = { AUDIO_IFACE(24, I2S), AUDIO_IFACE(24, I2S) }, 151 }; 152 153 static const struct regmap_config ak4613_regmap_cfg = { 154 .reg_bits = 8, 155 .val_bits = 8, 156 .max_register = 0x16, 157 .reg_defaults = ak4613_reg, 158 .num_reg_defaults = ARRAY_SIZE(ak4613_reg), 159 .cache_type = REGCACHE_RBTREE, 160 }; 161 162 static const struct of_device_id ak4613_of_match[] = { 163 { .compatible = "asahi-kasei,ak4613", .data = &ak4613_regmap_cfg }, 164 {}, 165 }; 166 MODULE_DEVICE_TABLE(of, ak4613_of_match); 167 168 static const struct i2c_device_id ak4613_i2c_id[] = { 169 { "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg }, 170 { } 171 }; 172 MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id); 173 174 static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = { 175 176 /* Outputs */ 177 SND_SOC_DAPM_OUTPUT("LOUT1"), 178 SND_SOC_DAPM_OUTPUT("LOUT2"), 179 SND_SOC_DAPM_OUTPUT("LOUT3"), 180 SND_SOC_DAPM_OUTPUT("LOUT4"), 181 SND_SOC_DAPM_OUTPUT("LOUT5"), 182 SND_SOC_DAPM_OUTPUT("LOUT6"), 183 184 SND_SOC_DAPM_OUTPUT("ROUT1"), 185 SND_SOC_DAPM_OUTPUT("ROUT2"), 186 SND_SOC_DAPM_OUTPUT("ROUT3"), 187 SND_SOC_DAPM_OUTPUT("ROUT4"), 188 SND_SOC_DAPM_OUTPUT("ROUT5"), 189 SND_SOC_DAPM_OUTPUT("ROUT6"), 190 191 /* Inputs */ 192 SND_SOC_DAPM_INPUT("LIN1"), 193 SND_SOC_DAPM_INPUT("LIN2"), 194 195 SND_SOC_DAPM_INPUT("RIN1"), 196 SND_SOC_DAPM_INPUT("RIN2"), 197 198 /* DAC */ 199 SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0), 200 SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0), 201 SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0), 202 SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0), 203 SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0), 204 SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0), 205 206 /* ADC */ 207 SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0), 208 SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0), 209 }; 210 211 static const struct snd_soc_dapm_route ak4613_intercon[] = { 212 {"LOUT1", NULL, "DAC1"}, 213 {"LOUT2", NULL, "DAC2"}, 214 {"LOUT3", NULL, "DAC3"}, 215 {"LOUT4", NULL, "DAC4"}, 216 {"LOUT5", NULL, "DAC5"}, 217 {"LOUT6", NULL, "DAC6"}, 218 219 {"ROUT1", NULL, "DAC1"}, 220 {"ROUT2", NULL, "DAC2"}, 221 {"ROUT3", NULL, "DAC3"}, 222 {"ROUT4", NULL, "DAC4"}, 223 {"ROUT5", NULL, "DAC5"}, 224 {"ROUT6", NULL, "DAC6"}, 225 226 {"DAC1", NULL, "Playback"}, 227 {"DAC2", NULL, "Playback"}, 228 {"DAC3", NULL, "Playback"}, 229 {"DAC4", NULL, "Playback"}, 230 {"DAC5", NULL, "Playback"}, 231 {"DAC6", NULL, "Playback"}, 232 233 {"Capture", NULL, "ADC1"}, 234 {"Capture", NULL, "ADC2"}, 235 236 {"ADC1", NULL, "LIN1"}, 237 {"ADC2", NULL, "LIN2"}, 238 239 {"ADC1", NULL, "RIN1"}, 240 {"ADC2", NULL, "RIN2"}, 241 }; 242 243 static void ak4613_dai_shutdown(struct snd_pcm_substream *substream, 244 struct snd_soc_dai *dai) 245 { 246 struct snd_soc_codec *codec = dai->codec; 247 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); 248 struct device *dev = codec->dev; 249 250 mutex_lock(&priv->lock); 251 priv->cnt--; 252 if (priv->cnt < 0) { 253 dev_err(dev, "unexpected counter error\n"); 254 priv->cnt = 0; 255 } 256 if (!priv->cnt) 257 priv->iface = NULL; 258 mutex_unlock(&priv->lock); 259 } 260 261 static void ak4613_hw_constraints(struct ak4613_priv *priv, 262 struct snd_pcm_runtime *runtime) 263 { 264 static const unsigned int ak4613_rates[] = { 265 32000, 266 44100, 267 48000, 268 64000, 269 88200, 270 96000, 271 176400, 272 192000, 273 }; 274 struct snd_pcm_hw_constraint_list *constraint = &priv->constraint; 275 unsigned int fs; 276 int i; 277 278 constraint->list = ak4613_rates; 279 constraint->mask = 0; 280 constraint->count = 0; 281 282 /* 283 * Slave Mode 284 * Normal: [32kHz, 48kHz] : 256fs,384fs or 512fs 285 * Double: [64kHz, 96kHz] : 256fs 286 * Quad : [128kHz,192kHz]: 128fs 287 * 288 * Master mode 289 * Normal: [32kHz, 48kHz] : 256fs or 512fs 290 * Double: [64kHz, 96kHz] : 256fs 291 * Quad : [128kHz,192kHz]: 128fs 292 */ 293 for (i = 0; i < ARRAY_SIZE(ak4613_rates); i++) { 294 /* minimum fs on each range */ 295 fs = (ak4613_rates[i] <= 96000) ? 256 : 128; 296 297 if (priv->sysclk >= ak4613_rates[i] * fs) 298 constraint->count = i + 1; 299 } 300 301 snd_pcm_hw_constraint_list(runtime, 0, 302 SNDRV_PCM_HW_PARAM_RATE, constraint); 303 } 304 305 static int ak4613_dai_startup(struct snd_pcm_substream *substream, 306 struct snd_soc_dai *dai) 307 { 308 struct snd_soc_codec *codec = dai->codec; 309 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); 310 311 priv->cnt++; 312 313 ak4613_hw_constraints(priv, substream->runtime); 314 315 return 0; 316 } 317 318 static int ak4613_dai_set_sysclk(struct snd_soc_dai *codec_dai, 319 int clk_id, unsigned int freq, int dir) 320 { 321 struct snd_soc_codec *codec = codec_dai->codec; 322 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); 323 324 priv->sysclk = freq; 325 326 return 0; 327 } 328 329 static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 330 { 331 struct snd_soc_codec *codec = dai->codec; 332 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); 333 334 fmt &= SND_SOC_DAIFMT_FORMAT_MASK; 335 336 switch (fmt) { 337 case SND_SOC_DAIFMT_LEFT_J: 338 case SND_SOC_DAIFMT_I2S: 339 priv->fmt = fmt; 340 break; 341 default: 342 return -EINVAL; 343 } 344 345 return 0; 346 } 347 348 static bool ak4613_dai_fmt_matching(const struct ak4613_interface *iface, 349 int is_play, 350 unsigned int fmt, unsigned int width) 351 { 352 const struct ak4613_formats *fmts; 353 354 fmts = (is_play) ? &iface->playback : &iface->capture; 355 356 if (fmts->fmt != fmt) 357 return false; 358 359 if (fmts->width != width) 360 return false; 361 362 return true; 363 } 364 365 static int ak4613_dai_hw_params(struct snd_pcm_substream *substream, 366 struct snd_pcm_hw_params *params, 367 struct snd_soc_dai *dai) 368 { 369 struct snd_soc_codec *codec = dai->codec; 370 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); 371 const struct ak4613_interface *iface; 372 struct device *dev = codec->dev; 373 unsigned int width = params_width(params); 374 unsigned int fmt = priv->fmt; 375 unsigned int rate; 376 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 377 int i, ret; 378 u8 fmt_ctrl, ctrl2; 379 380 rate = params_rate(params); 381 switch (rate) { 382 case 32000: 383 case 44100: 384 case 48000: 385 ctrl2 = DFS_NORMAL_SPEED; 386 break; 387 case 64000: 388 case 88200: 389 case 96000: 390 ctrl2 = DFS_DOUBLE_SPEED; 391 break; 392 case 176400: 393 case 192000: 394 ctrl2 = DFS_QUAD_SPEED; 395 break; 396 default: 397 return -EINVAL; 398 } 399 priv->rate = rate; 400 401 /* 402 * FIXME 403 * 404 * It doesn't support TDM at this point 405 */ 406 fmt_ctrl = NO_FMT; 407 ret = -EINVAL; 408 iface = NULL; 409 410 mutex_lock(&priv->lock); 411 if (priv->iface) { 412 if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width)) 413 iface = priv->iface; 414 } else { 415 for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) { 416 if (!ak4613_dai_fmt_matching(ak4613_iface + i, 417 is_play, 418 fmt, width)) 419 continue; 420 iface = ak4613_iface + i; 421 break; 422 } 423 } 424 425 if ((priv->iface == NULL) || 426 (priv->iface == iface)) { 427 priv->iface = iface; 428 ret = 0; 429 } 430 mutex_unlock(&priv->lock); 431 432 if (ret < 0) 433 goto hw_params_end; 434 435 fmt_ctrl = AUDIO_IFACE_TO_VAL(iface); 436 437 snd_soc_update_bits(codec, CTRL1, FMT_MASK, fmt_ctrl); 438 snd_soc_update_bits(codec, CTRL2, DFS_MASK, ctrl2); 439 440 snd_soc_update_bits(codec, ICTRL, ICTRL_MASK, priv->ic); 441 snd_soc_update_bits(codec, OCTRL, OCTRL_MASK, priv->oc); 442 443 hw_params_end: 444 if (ret < 0) 445 dev_warn(dev, "unsupported data width/format combination\n"); 446 447 return ret; 448 } 449 450 static int ak4613_set_bias_level(struct snd_soc_codec *codec, 451 enum snd_soc_bias_level level) 452 { 453 u8 mgmt1 = 0; 454 455 switch (level) { 456 case SND_SOC_BIAS_ON: 457 mgmt1 |= RSTN; 458 /* fall through */ 459 case SND_SOC_BIAS_PREPARE: 460 mgmt1 |= PMADC | PMDAC; 461 /* fall through */ 462 case SND_SOC_BIAS_STANDBY: 463 mgmt1 |= PMVR; 464 /* fall through */ 465 case SND_SOC_BIAS_OFF: 466 default: 467 break; 468 } 469 470 snd_soc_write(codec, PW_MGMT1, mgmt1); 471 472 return 0; 473 } 474 475 static void ak4613_dummy_write(struct work_struct *work) 476 { 477 struct ak4613_priv *priv = container_of(work, 478 struct ak4613_priv, 479 dummy_write_work); 480 struct snd_soc_component *component = priv->component; 481 unsigned int mgmt1; 482 unsigned int mgmt3; 483 484 /* 485 * PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks 486 * 487 * Note 488 * 489 * To avoid extra delay, we want to avoid preemption here, 490 * but we can't. Because it uses I2C access which is using IRQ 491 * and sleep. Thus, delay might be more than 5 LR clocks 492 * see also 493 * ak4613_dai_trigger() 494 */ 495 udelay(5000000 / priv->rate); 496 497 snd_soc_component_read(component, PW_MGMT1, &mgmt1); 498 snd_soc_component_read(component, PW_MGMT3, &mgmt3); 499 500 snd_soc_component_write(component, PW_MGMT1, mgmt1); 501 snd_soc_component_write(component, PW_MGMT3, mgmt3); 502 } 503 504 static int ak4613_dai_trigger(struct snd_pcm_substream *substream, int cmd, 505 struct snd_soc_dai *dai) 506 { 507 struct snd_soc_codec *codec = dai->codec; 508 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); 509 510 /* 511 * FIXME 512 * 513 * PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks 514 * from Power Down Release. Otherwise, Playback volume will be 0dB. 515 * To avoid complex multiple delay/dummy_write method from 516 * ak4613_set_bias_level() / SND_SOC_DAPM_DAC_E("DACx", ...), 517 * call it once here. 518 * 519 * But, unfortunately, we can't "write" here because here is atomic 520 * context (It uses I2C access for writing). 521 * Thus, use schedule_work() to switching to normal context 522 * immediately. 523 * 524 * Note 525 * 526 * Calling ak4613_dummy_write() function might be delayed. 527 * In such case, ak4613 volume might be temporarily 0dB when 528 * beggining of playback. 529 * see also 530 * ak4613_dummy_write() 531 */ 532 533 if ((cmd != SNDRV_PCM_TRIGGER_START) && 534 (cmd != SNDRV_PCM_TRIGGER_RESUME)) 535 return 0; 536 537 if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK) 538 return 0; 539 540 priv->component = &codec->component; 541 schedule_work(&priv->dummy_write_work); 542 543 return 0; 544 } 545 546 static const struct snd_soc_dai_ops ak4613_dai_ops = { 547 .startup = ak4613_dai_startup, 548 .shutdown = ak4613_dai_shutdown, 549 .set_sysclk = ak4613_dai_set_sysclk, 550 .set_fmt = ak4613_dai_set_fmt, 551 .trigger = ak4613_dai_trigger, 552 .hw_params = ak4613_dai_hw_params, 553 }; 554 555 #define AK4613_PCM_RATE (SNDRV_PCM_RATE_32000 |\ 556 SNDRV_PCM_RATE_44100 |\ 557 SNDRV_PCM_RATE_48000 |\ 558 SNDRV_PCM_RATE_64000 |\ 559 SNDRV_PCM_RATE_88200 |\ 560 SNDRV_PCM_RATE_96000 |\ 561 SNDRV_PCM_RATE_176400 |\ 562 SNDRV_PCM_RATE_192000) 563 #define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S24_LE) 564 565 static struct snd_soc_dai_driver ak4613_dai = { 566 .name = "ak4613-hifi", 567 .playback = { 568 .stream_name = "Playback", 569 .channels_min = 2, 570 .channels_max = 2, 571 .rates = AK4613_PCM_RATE, 572 .formats = AK4613_PCM_FMTBIT, 573 }, 574 .capture = { 575 .stream_name = "Capture", 576 .channels_min = 2, 577 .channels_max = 2, 578 .rates = AK4613_PCM_RATE, 579 .formats = AK4613_PCM_FMTBIT, 580 }, 581 .ops = &ak4613_dai_ops, 582 .symmetric_rates = 1, 583 }; 584 585 static int ak4613_suspend(struct snd_soc_codec *codec) 586 { 587 struct regmap *regmap = dev_get_regmap(codec->dev, NULL); 588 589 regcache_cache_only(regmap, true); 590 regcache_mark_dirty(regmap); 591 return 0; 592 } 593 594 static int ak4613_resume(struct snd_soc_codec *codec) 595 { 596 struct regmap *regmap = dev_get_regmap(codec->dev, NULL); 597 598 regcache_cache_only(regmap, false); 599 return regcache_sync(regmap); 600 } 601 602 static const struct snd_soc_codec_driver soc_codec_dev_ak4613 = { 603 .suspend = ak4613_suspend, 604 .resume = ak4613_resume, 605 .set_bias_level = ak4613_set_bias_level, 606 .component_driver = { 607 .controls = ak4613_snd_controls, 608 .num_controls = ARRAY_SIZE(ak4613_snd_controls), 609 .dapm_widgets = ak4613_dapm_widgets, 610 .num_dapm_widgets = ARRAY_SIZE(ak4613_dapm_widgets), 611 .dapm_routes = ak4613_intercon, 612 .num_dapm_routes = ARRAY_SIZE(ak4613_intercon), 613 }, 614 }; 615 616 static void ak4613_parse_of(struct ak4613_priv *priv, 617 struct device *dev) 618 { 619 struct device_node *np = dev->of_node; 620 char prop[32]; 621 int i; 622 623 /* Input 1 - 2 */ 624 for (i = 0; i < 2; i++) { 625 snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1); 626 if (!of_get_property(np, prop, NULL)) 627 priv->ic |= 1 << i; 628 } 629 630 /* Output 1 - 6 */ 631 for (i = 0; i < 6; i++) { 632 snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1); 633 if (!of_get_property(np, prop, NULL)) 634 priv->oc |= 1 << i; 635 } 636 } 637 638 static int ak4613_i2c_probe(struct i2c_client *i2c, 639 const struct i2c_device_id *id) 640 { 641 struct device *dev = &i2c->dev; 642 struct device_node *np = dev->of_node; 643 const struct regmap_config *regmap_cfg; 644 struct regmap *regmap; 645 struct ak4613_priv *priv; 646 647 regmap_cfg = NULL; 648 if (np) { 649 const struct of_device_id *of_id; 650 651 of_id = of_match_device(ak4613_of_match, dev); 652 if (of_id) 653 regmap_cfg = of_id->data; 654 } else { 655 regmap_cfg = (const struct regmap_config *)id->driver_data; 656 } 657 658 if (!regmap_cfg) 659 return -EINVAL; 660 661 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 662 if (!priv) 663 return -ENOMEM; 664 665 ak4613_parse_of(priv, dev); 666 667 priv->iface = NULL; 668 priv->cnt = 0; 669 priv->sysclk = 0; 670 INIT_WORK(&priv->dummy_write_work, ak4613_dummy_write); 671 672 mutex_init(&priv->lock); 673 674 i2c_set_clientdata(i2c, priv); 675 676 regmap = devm_regmap_init_i2c(i2c, regmap_cfg); 677 if (IS_ERR(regmap)) 678 return PTR_ERR(regmap); 679 680 return snd_soc_register_codec(dev, &soc_codec_dev_ak4613, 681 &ak4613_dai, 1); 682 } 683 684 static int ak4613_i2c_remove(struct i2c_client *client) 685 { 686 snd_soc_unregister_codec(&client->dev); 687 return 0; 688 } 689 690 static struct i2c_driver ak4613_i2c_driver = { 691 .driver = { 692 .name = "ak4613-codec", 693 .of_match_table = ak4613_of_match, 694 }, 695 .probe = ak4613_i2c_probe, 696 .remove = ak4613_i2c_remove, 697 .id_table = ak4613_i2c_id, 698 }; 699 700 module_i2c_driver(ak4613_i2c_driver); 701 702 MODULE_DESCRIPTION("Soc AK4613 driver"); 703 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 704 MODULE_LICENSE("GPL v2"); 705