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/i2c.h> 19 #include <linux/slab.h> 20 #include <linux/of_device.h> 21 #include <linux/module.h> 22 #include <linux/regmap.h> 23 #include <sound/soc.h> 24 #include <sound/pcm_params.h> 25 #include <sound/tlv.h> 26 27 #define PW_MGMT1 0x00 /* Power Management 1 */ 28 #define PW_MGMT2 0x01 /* Power Management 2 */ 29 #define PW_MGMT3 0x02 /* Power Management 3 */ 30 #define CTRL1 0x03 /* Control 1 */ 31 #define CTRL2 0x04 /* Control 2 */ 32 #define DEMP1 0x05 /* De-emphasis1 */ 33 #define DEMP2 0x06 /* De-emphasis2 */ 34 #define OFD 0x07 /* Overflow Detect */ 35 #define ZRD 0x08 /* Zero Detect */ 36 #define ICTRL 0x09 /* Input Control */ 37 #define OCTRL 0x0a /* Output Control */ 38 #define LOUT1 0x0b /* LOUT1 Volume Control */ 39 #define ROUT1 0x0c /* ROUT1 Volume Control */ 40 #define LOUT2 0x0d /* LOUT2 Volume Control */ 41 #define ROUT2 0x0e /* ROUT2 Volume Control */ 42 #define LOUT3 0x0f /* LOUT3 Volume Control */ 43 #define ROUT3 0x10 /* ROUT3 Volume Control */ 44 #define LOUT4 0x11 /* LOUT4 Volume Control */ 45 #define ROUT4 0x12 /* ROUT4 Volume Control */ 46 #define LOUT5 0x13 /* LOUT5 Volume Control */ 47 #define ROUT5 0x14 /* ROUT5 Volume Control */ 48 #define LOUT6 0x15 /* LOUT6 Volume Control */ 49 #define ROUT6 0x16 /* ROUT6 Volume Control */ 50 51 /* PW_MGMT1 */ 52 #define RSTN BIT(0) 53 #define PMDAC BIT(1) 54 #define PMADC BIT(2) 55 #define PMVR BIT(3) 56 57 /* PW_MGMT2 */ 58 #define PMAD_ALL 0x7 59 60 /* PW_MGMT3 */ 61 #define PMDA_ALL 0x3f 62 63 /* CTRL1 */ 64 #define DIF0 BIT(3) 65 #define DIF1 BIT(4) 66 #define DIF2 BIT(5) 67 #define TDM0 BIT(6) 68 #define TDM1 BIT(7) 69 #define NO_FMT (0xff) 70 #define FMT_MASK (0xf8) 71 72 /* CTRL2 */ 73 #define DFS_MASK (3 << 2) 74 #define DFS_NORMAL_SPEED (0 << 2) 75 #define DFS_DOUBLE_SPEED (1 << 2) 76 #define DFS_QUAD_SPEED (2 << 2) 77 78 /* ICTRL */ 79 #define ICTRL_MASK (0x3) 80 81 /* OCTRL */ 82 #define OCTRL_MASK (0x3F) 83 84 struct ak4613_formats { 85 unsigned int width; 86 unsigned int fmt; 87 }; 88 89 struct ak4613_interface { 90 struct ak4613_formats capture; 91 struct ak4613_formats playback; 92 }; 93 94 struct ak4613_priv { 95 struct mutex lock; 96 const struct ak4613_interface *iface; 97 struct snd_pcm_hw_constraint_list constraint; 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 */ 114 static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1); 115 116 static 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 }; 130 131 static 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 } 142 static 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 }; 148 149 static 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 }; 157 158 static const struct of_device_id ak4613_of_match[] = { 159 { .compatible = "asahi-kasei,ak4613", .data = &ak4613_regmap_cfg }, 160 {}, 161 }; 162 MODULE_DEVICE_TABLE(of, ak4613_of_match); 163 164 static const struct i2c_device_id ak4613_i2c_id[] = { 165 { "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg }, 166 { } 167 }; 168 MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id); 169 170 static 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 }; 206 207 static 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 }; 238 239 static void ak4613_dai_shutdown(struct snd_pcm_substream *substream, 240 struct snd_soc_dai *dai) 241 { 242 struct snd_soc_codec *codec = dai->codec; 243 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); 244 struct device *dev = codec->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 } 256 257 static 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 } 300 301 static int ak4613_dai_startup(struct snd_pcm_substream *substream, 302 struct snd_soc_dai *dai) 303 { 304 struct snd_soc_codec *codec = dai->codec; 305 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); 306 307 priv->cnt++; 308 309 ak4613_hw_constraints(priv, substream->runtime); 310 311 return 0; 312 } 313 314 static 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_codec *codec = codec_dai->codec; 318 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); 319 320 priv->sysclk = freq; 321 322 return 0; 323 } 324 325 static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 326 { 327 struct snd_soc_codec *codec = dai->codec; 328 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); 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 } 343 344 static 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 } 360 361 static 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_codec *codec = dai->codec; 366 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); 367 const struct ak4613_interface *iface; 368 struct device *dev = codec->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 } 395 396 /* 397 * FIXME 398 * 399 * It doesn't support TDM at this point 400 */ 401 fmt_ctrl = NO_FMT; 402 ret = -EINVAL; 403 iface = NULL; 404 405 mutex_lock(&priv->lock); 406 if (priv->iface) { 407 if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width)) 408 iface = priv->iface; 409 } else { 410 for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) { 411 if (!ak4613_dai_fmt_matching(ak4613_iface + i, 412 is_play, 413 fmt, width)) 414 continue; 415 iface = ak4613_iface + i; 416 break; 417 } 418 } 419 420 if ((priv->iface == NULL) || 421 (priv->iface == iface)) { 422 priv->iface = iface; 423 ret = 0; 424 } 425 mutex_unlock(&priv->lock); 426 427 if (ret < 0) 428 goto hw_params_end; 429 430 fmt_ctrl = AUDIO_IFACE_TO_VAL(iface); 431 432 snd_soc_update_bits(codec, CTRL1, FMT_MASK, fmt_ctrl); 433 snd_soc_update_bits(codec, CTRL2, DFS_MASK, ctrl2); 434 435 snd_soc_update_bits(codec, ICTRL, ICTRL_MASK, priv->ic); 436 snd_soc_update_bits(codec, OCTRL, OCTRL_MASK, priv->oc); 437 438 hw_params_end: 439 if (ret < 0) 440 dev_warn(dev, "unsupported data width/format combination\n"); 441 442 return ret; 443 } 444 445 static int ak4613_set_bias_level(struct snd_soc_codec *codec, 446 enum snd_soc_bias_level level) 447 { 448 u8 mgmt1 = 0; 449 450 switch (level) { 451 case SND_SOC_BIAS_ON: 452 mgmt1 |= RSTN; 453 /* fall through */ 454 case SND_SOC_BIAS_PREPARE: 455 mgmt1 |= PMADC | PMDAC; 456 /* fall through */ 457 case SND_SOC_BIAS_STANDBY: 458 mgmt1 |= PMVR; 459 /* fall through */ 460 case SND_SOC_BIAS_OFF: 461 default: 462 break; 463 } 464 465 snd_soc_write(codec, PW_MGMT1, mgmt1); 466 467 return 0; 468 } 469 470 static const struct snd_soc_dai_ops ak4613_dai_ops = { 471 .startup = ak4613_dai_startup, 472 .shutdown = ak4613_dai_shutdown, 473 .set_sysclk = ak4613_dai_set_sysclk, 474 .set_fmt = ak4613_dai_set_fmt, 475 .hw_params = ak4613_dai_hw_params, 476 }; 477 478 #define AK4613_PCM_RATE (SNDRV_PCM_RATE_32000 |\ 479 SNDRV_PCM_RATE_44100 |\ 480 SNDRV_PCM_RATE_48000 |\ 481 SNDRV_PCM_RATE_64000 |\ 482 SNDRV_PCM_RATE_88200 |\ 483 SNDRV_PCM_RATE_96000 |\ 484 SNDRV_PCM_RATE_176400 |\ 485 SNDRV_PCM_RATE_192000) 486 #define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S24_LE) 487 488 static struct snd_soc_dai_driver ak4613_dai = { 489 .name = "ak4613-hifi", 490 .playback = { 491 .stream_name = "Playback", 492 .channels_min = 2, 493 .channels_max = 2, 494 .rates = AK4613_PCM_RATE, 495 .formats = AK4613_PCM_FMTBIT, 496 }, 497 .capture = { 498 .stream_name = "Capture", 499 .channels_min = 2, 500 .channels_max = 2, 501 .rates = AK4613_PCM_RATE, 502 .formats = AK4613_PCM_FMTBIT, 503 }, 504 .ops = &ak4613_dai_ops, 505 .symmetric_rates = 1, 506 }; 507 508 static int ak4613_suspend(struct snd_soc_codec *codec) 509 { 510 struct regmap *regmap = dev_get_regmap(codec->dev, NULL); 511 512 regcache_cache_only(regmap, true); 513 regcache_mark_dirty(regmap); 514 return 0; 515 } 516 517 static int ak4613_resume(struct snd_soc_codec *codec) 518 { 519 struct regmap *regmap = dev_get_regmap(codec->dev, NULL); 520 521 regcache_cache_only(regmap, false); 522 return regcache_sync(regmap); 523 } 524 525 static struct snd_soc_codec_driver soc_codec_dev_ak4613 = { 526 .suspend = ak4613_suspend, 527 .resume = ak4613_resume, 528 .set_bias_level = ak4613_set_bias_level, 529 .component_driver = { 530 .controls = ak4613_snd_controls, 531 .num_controls = ARRAY_SIZE(ak4613_snd_controls), 532 .dapm_widgets = ak4613_dapm_widgets, 533 .num_dapm_widgets = ARRAY_SIZE(ak4613_dapm_widgets), 534 .dapm_routes = ak4613_intercon, 535 .num_dapm_routes = ARRAY_SIZE(ak4613_intercon), 536 }, 537 }; 538 539 static void ak4613_parse_of(struct ak4613_priv *priv, 540 struct device *dev) 541 { 542 struct device_node *np = dev->of_node; 543 char prop[32]; 544 int i; 545 546 /* Input 1 - 2 */ 547 for (i = 0; i < 2; i++) { 548 snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1); 549 if (!of_get_property(np, prop, NULL)) 550 priv->ic |= 1 << i; 551 } 552 553 /* Output 1 - 6 */ 554 for (i = 0; i < 6; i++) { 555 snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1); 556 if (!of_get_property(np, prop, NULL)) 557 priv->oc |= 1 << i; 558 } 559 } 560 561 static int ak4613_i2c_probe(struct i2c_client *i2c, 562 const struct i2c_device_id *id) 563 { 564 struct device *dev = &i2c->dev; 565 struct device_node *np = dev->of_node; 566 const struct regmap_config *regmap_cfg; 567 struct regmap *regmap; 568 struct ak4613_priv *priv; 569 570 regmap_cfg = NULL; 571 if (np) { 572 const struct of_device_id *of_id; 573 574 of_id = of_match_device(ak4613_of_match, dev); 575 if (of_id) 576 regmap_cfg = of_id->data; 577 } else { 578 regmap_cfg = (const struct regmap_config *)id->driver_data; 579 } 580 581 if (!regmap_cfg) 582 return -EINVAL; 583 584 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 585 if (!priv) 586 return -ENOMEM; 587 588 ak4613_parse_of(priv, dev); 589 590 priv->iface = NULL; 591 priv->cnt = 0; 592 priv->sysclk = 0; 593 594 mutex_init(&priv->lock); 595 596 i2c_set_clientdata(i2c, priv); 597 598 regmap = devm_regmap_init_i2c(i2c, regmap_cfg); 599 if (IS_ERR(regmap)) 600 return PTR_ERR(regmap); 601 602 return snd_soc_register_codec(dev, &soc_codec_dev_ak4613, 603 &ak4613_dai, 1); 604 } 605 606 static int ak4613_i2c_remove(struct i2c_client *client) 607 { 608 snd_soc_unregister_codec(&client->dev); 609 return 0; 610 } 611 612 static struct i2c_driver ak4613_i2c_driver = { 613 .driver = { 614 .name = "ak4613-codec", 615 .of_match_table = ak4613_of_match, 616 }, 617 .probe = ak4613_i2c_probe, 618 .remove = ak4613_i2c_remove, 619 .id_table = ak4613_i2c_id, 620 }; 621 622 module_i2c_driver(ak4613_i2c_driver); 623 624 MODULE_DESCRIPTION("Soc AK4613 driver"); 625 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 626 MODULE_LICENSE("GPL v2"); 627