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 struct ak4613_formats { 79 unsigned int width; 80 unsigned int fmt; 81 }; 82 83 struct ak4613_interface { 84 struct ak4613_formats capture; 85 struct ak4613_formats playback; 86 }; 87 88 struct ak4613_priv { 89 struct mutex lock; 90 const struct ak4613_interface *iface; 91 92 unsigned int fmt; 93 u8 oc; 94 u8 ic; 95 int cnt; 96 }; 97 98 /* 99 * Playback Volume 100 * 101 * max : 0x00 : 0 dB 102 * ( 0.5 dB step ) 103 * min : 0xFE : -127.0 dB 104 * mute: 0xFF 105 */ 106 static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1); 107 108 static const struct snd_kcontrol_new ak4613_snd_controls[] = { 109 SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1, 110 0, 0xFF, 1, out_tlv), 111 SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2, 112 0, 0xFF, 1, out_tlv), 113 SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3, 114 0, 0xFF, 1, out_tlv), 115 SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4, 116 0, 0xFF, 1, out_tlv), 117 SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5, 118 0, 0xFF, 1, out_tlv), 119 SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6, 120 0, 0xFF, 1, out_tlv), 121 }; 122 123 static const struct reg_default ak4613_reg[] = { 124 { 0x0, 0x0f }, { 0x1, 0x07 }, { 0x2, 0x3f }, { 0x3, 0x20 }, 125 { 0x4, 0x20 }, { 0x5, 0x55 }, { 0x6, 0x05 }, { 0x7, 0x07 }, 126 { 0x8, 0x0f }, { 0x9, 0x07 }, { 0xa, 0x3f }, { 0xb, 0x00 }, 127 { 0xc, 0x00 }, { 0xd, 0x00 }, { 0xe, 0x00 }, { 0xf, 0x00 }, 128 { 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 }, 129 { 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 }, 130 }; 131 132 #define AUDIO_IFACE_TO_VAL(fmts) ((fmts - ak4613_iface) << 3) 133 #define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt } 134 static const struct ak4613_interface ak4613_iface[] = { 135 /* capture */ /* playback */ 136 [0] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(16, RIGHT_J) }, 137 [1] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(20, RIGHT_J) }, 138 [2] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(24, RIGHT_J) }, 139 [3] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(24, LEFT_J) }, 140 [4] = { AUDIO_IFACE(24, I2S), AUDIO_IFACE(24, I2S) }, 141 }; 142 143 static const struct regmap_config ak4613_regmap_cfg = { 144 .reg_bits = 8, 145 .val_bits = 8, 146 .max_register = 0x16, 147 .reg_defaults = ak4613_reg, 148 .num_reg_defaults = ARRAY_SIZE(ak4613_reg), 149 .cache_type = REGCACHE_RBTREE, 150 }; 151 152 static const struct of_device_id ak4613_of_match[] = { 153 { .compatible = "asahi-kasei,ak4613", .data = &ak4613_regmap_cfg }, 154 {}, 155 }; 156 MODULE_DEVICE_TABLE(of, ak4613_of_match); 157 158 static const struct i2c_device_id ak4613_i2c_id[] = { 159 { "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg }, 160 { } 161 }; 162 MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id); 163 164 static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = { 165 166 /* Outputs */ 167 SND_SOC_DAPM_OUTPUT("LOUT1"), 168 SND_SOC_DAPM_OUTPUT("LOUT2"), 169 SND_SOC_DAPM_OUTPUT("LOUT3"), 170 SND_SOC_DAPM_OUTPUT("LOUT4"), 171 SND_SOC_DAPM_OUTPUT("LOUT5"), 172 SND_SOC_DAPM_OUTPUT("LOUT6"), 173 174 SND_SOC_DAPM_OUTPUT("ROUT1"), 175 SND_SOC_DAPM_OUTPUT("ROUT2"), 176 SND_SOC_DAPM_OUTPUT("ROUT3"), 177 SND_SOC_DAPM_OUTPUT("ROUT4"), 178 SND_SOC_DAPM_OUTPUT("ROUT5"), 179 SND_SOC_DAPM_OUTPUT("ROUT6"), 180 181 /* Inputs */ 182 SND_SOC_DAPM_INPUT("LIN1"), 183 SND_SOC_DAPM_INPUT("LIN2"), 184 185 SND_SOC_DAPM_INPUT("RIN1"), 186 SND_SOC_DAPM_INPUT("RIN2"), 187 188 /* DAC */ 189 SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0), 190 SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0), 191 SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0), 192 SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0), 193 SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0), 194 SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0), 195 196 /* ADC */ 197 SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0), 198 SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0), 199 }; 200 201 static const struct snd_soc_dapm_route ak4613_intercon[] = { 202 {"LOUT1", NULL, "DAC1"}, 203 {"LOUT2", NULL, "DAC2"}, 204 {"LOUT3", NULL, "DAC3"}, 205 {"LOUT4", NULL, "DAC4"}, 206 {"LOUT5", NULL, "DAC5"}, 207 {"LOUT6", NULL, "DAC6"}, 208 209 {"ROUT1", NULL, "DAC1"}, 210 {"ROUT2", NULL, "DAC2"}, 211 {"ROUT3", NULL, "DAC3"}, 212 {"ROUT4", NULL, "DAC4"}, 213 {"ROUT5", NULL, "DAC5"}, 214 {"ROUT6", NULL, "DAC6"}, 215 216 {"DAC1", NULL, "Playback"}, 217 {"DAC2", NULL, "Playback"}, 218 {"DAC3", NULL, "Playback"}, 219 {"DAC4", NULL, "Playback"}, 220 {"DAC5", NULL, "Playback"}, 221 {"DAC6", NULL, "Playback"}, 222 223 {"Capture", NULL, "ADC1"}, 224 {"Capture", NULL, "ADC2"}, 225 226 {"ADC1", NULL, "LIN1"}, 227 {"ADC2", NULL, "LIN2"}, 228 229 {"ADC1", NULL, "RIN1"}, 230 {"ADC2", NULL, "RIN2"}, 231 }; 232 233 static void ak4613_dai_shutdown(struct snd_pcm_substream *substream, 234 struct snd_soc_dai *dai) 235 { 236 struct snd_soc_codec *codec = dai->codec; 237 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); 238 struct device *dev = codec->dev; 239 240 mutex_lock(&priv->lock); 241 priv->cnt--; 242 if (priv->cnt < 0) { 243 dev_err(dev, "unexpected counter error\n"); 244 priv->cnt = 0; 245 } 246 if (!priv->cnt) 247 priv->iface = NULL; 248 mutex_unlock(&priv->lock); 249 } 250 251 static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 252 { 253 struct snd_soc_codec *codec = dai->codec; 254 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); 255 256 fmt &= SND_SOC_DAIFMT_FORMAT_MASK; 257 258 switch (fmt) { 259 case SND_SOC_DAIFMT_RIGHT_J: 260 case SND_SOC_DAIFMT_LEFT_J: 261 case SND_SOC_DAIFMT_I2S: 262 priv->fmt = fmt; 263 264 break; 265 default: 266 return -EINVAL; 267 } 268 269 return 0; 270 } 271 272 static bool ak4613_dai_fmt_matching(const struct ak4613_interface *iface, 273 int is_play, 274 unsigned int fmt, unsigned int width) 275 { 276 const struct ak4613_formats *fmts; 277 278 fmts = (is_play) ? &iface->playback : &iface->capture; 279 280 if (fmts->fmt != fmt) 281 return false; 282 283 if (fmt == SND_SOC_DAIFMT_RIGHT_J) { 284 if (fmts->width != width) 285 return false; 286 } else { 287 if (fmts->width < width) 288 return false; 289 } 290 291 return true; 292 } 293 294 static int ak4613_dai_hw_params(struct snd_pcm_substream *substream, 295 struct snd_pcm_hw_params *params, 296 struct snd_soc_dai *dai) 297 { 298 struct snd_soc_codec *codec = dai->codec; 299 struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); 300 const struct ak4613_interface *iface; 301 struct device *dev = codec->dev; 302 unsigned int width = params_width(params); 303 unsigned int fmt = priv->fmt; 304 unsigned int rate; 305 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 306 int i, ret; 307 u8 fmt_ctrl, ctrl2; 308 309 rate = params_rate(params); 310 switch (rate) { 311 case 32000: 312 case 44100: 313 case 48000: 314 ctrl2 = DFS_NORMAL_SPEED; 315 break; 316 case 88200: 317 case 96000: 318 ctrl2 = DFS_DOUBLE_SPEED; 319 break; 320 case 176400: 321 case 192000: 322 ctrl2 = DFS_QUAD_SPEED; 323 break; 324 default: 325 return -EINVAL; 326 } 327 328 /* 329 * FIXME 330 * 331 * It doesn't support TDM at this point 332 */ 333 fmt_ctrl = NO_FMT; 334 ret = -EINVAL; 335 iface = NULL; 336 337 mutex_lock(&priv->lock); 338 if (priv->iface) { 339 if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width)) 340 iface = priv->iface; 341 } else { 342 for (i = ARRAY_SIZE(ak4613_iface); i >= 0; i--) { 343 if (!ak4613_dai_fmt_matching(ak4613_iface + i, 344 is_play, 345 fmt, width)) 346 continue; 347 iface = ak4613_iface + i; 348 break; 349 } 350 } 351 352 if ((priv->iface == NULL) || 353 (priv->iface == iface)) { 354 priv->iface = iface; 355 priv->cnt++; 356 ret = 0; 357 } 358 mutex_unlock(&priv->lock); 359 360 if (ret < 0) 361 goto hw_params_end; 362 363 fmt_ctrl = AUDIO_IFACE_TO_VAL(iface); 364 365 snd_soc_update_bits(codec, CTRL1, FMT_MASK, fmt_ctrl); 366 snd_soc_update_bits(codec, CTRL2, DFS_MASK, ctrl2); 367 368 snd_soc_write(codec, ICTRL, priv->ic); 369 snd_soc_write(codec, OCTRL, priv->oc); 370 371 hw_params_end: 372 if (ret < 0) 373 dev_warn(dev, "unsupported data width/format combination\n"); 374 375 return ret; 376 } 377 378 static int ak4613_set_bias_level(struct snd_soc_codec *codec, 379 enum snd_soc_bias_level level) 380 { 381 u8 mgmt1 = 0; 382 383 switch (level) { 384 case SND_SOC_BIAS_ON: 385 mgmt1 |= RSTN; 386 /* fall through */ 387 case SND_SOC_BIAS_PREPARE: 388 mgmt1 |= PMADC | PMDAC; 389 /* fall through */ 390 case SND_SOC_BIAS_STANDBY: 391 mgmt1 |= PMVR; 392 /* fall through */ 393 case SND_SOC_BIAS_OFF: 394 default: 395 break; 396 } 397 398 snd_soc_write(codec, PW_MGMT1, mgmt1); 399 400 return 0; 401 } 402 403 static const struct snd_soc_dai_ops ak4613_dai_ops = { 404 .shutdown = ak4613_dai_shutdown, 405 .set_fmt = ak4613_dai_set_fmt, 406 .hw_params = ak4613_dai_hw_params, 407 }; 408 409 #define AK4613_PCM_RATE (SNDRV_PCM_RATE_32000 |\ 410 SNDRV_PCM_RATE_44100 |\ 411 SNDRV_PCM_RATE_48000 |\ 412 SNDRV_PCM_RATE_64000 |\ 413 SNDRV_PCM_RATE_88200 |\ 414 SNDRV_PCM_RATE_96000 |\ 415 SNDRV_PCM_RATE_176400 |\ 416 SNDRV_PCM_RATE_192000) 417 #define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S16_LE |\ 418 SNDRV_PCM_FMTBIT_S24_LE) 419 420 static struct snd_soc_dai_driver ak4613_dai = { 421 .name = "ak4613-hifi", 422 .playback = { 423 .stream_name = "Playback", 424 .channels_min = 2, 425 .channels_max = 2, 426 .rates = AK4613_PCM_RATE, 427 .formats = AK4613_PCM_FMTBIT, 428 }, 429 .capture = { 430 .stream_name = "Capture", 431 .channels_min = 2, 432 .channels_max = 2, 433 .rates = AK4613_PCM_RATE, 434 .formats = AK4613_PCM_FMTBIT, 435 }, 436 .ops = &ak4613_dai_ops, 437 .symmetric_rates = 1, 438 }; 439 440 static int ak4613_resume(struct snd_soc_codec *codec) 441 { 442 struct regmap *regmap = dev_get_regmap(codec->dev, NULL); 443 444 regcache_mark_dirty(regmap); 445 return regcache_sync(regmap); 446 } 447 448 static struct snd_soc_codec_driver soc_codec_dev_ak4613 = { 449 .resume = ak4613_resume, 450 .set_bias_level = ak4613_set_bias_level, 451 .controls = ak4613_snd_controls, 452 .num_controls = ARRAY_SIZE(ak4613_snd_controls), 453 .dapm_widgets = ak4613_dapm_widgets, 454 .num_dapm_widgets = ARRAY_SIZE(ak4613_dapm_widgets), 455 .dapm_routes = ak4613_intercon, 456 .num_dapm_routes = ARRAY_SIZE(ak4613_intercon), 457 }; 458 459 static void ak4613_parse_of(struct ak4613_priv *priv, 460 struct device *dev) 461 { 462 struct device_node *np = dev->of_node; 463 char prop[32]; 464 int i; 465 466 /* Input 1 - 2 */ 467 for (i = 0; i < 2; i++) { 468 snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1); 469 if (!of_get_property(np, prop, NULL)) 470 priv->ic |= 1 << i; 471 } 472 473 /* Output 1 - 6 */ 474 for (i = 0; i < 6; i++) { 475 snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1); 476 if (!of_get_property(np, prop, NULL)) 477 priv->oc |= 1 << i; 478 } 479 } 480 481 static int ak4613_i2c_probe(struct i2c_client *i2c, 482 const struct i2c_device_id *id) 483 { 484 struct device *dev = &i2c->dev; 485 struct device_node *np = dev->of_node; 486 const struct regmap_config *regmap_cfg; 487 struct regmap *regmap; 488 struct ak4613_priv *priv; 489 490 regmap_cfg = NULL; 491 if (np) { 492 const struct of_device_id *of_id; 493 494 of_id = of_match_device(ak4613_of_match, dev); 495 if (of_id) 496 regmap_cfg = of_id->data; 497 } else { 498 regmap_cfg = (const struct regmap_config *)id->driver_data; 499 } 500 501 if (!regmap_cfg) 502 return -EINVAL; 503 504 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 505 if (!priv) 506 return -ENOMEM; 507 508 ak4613_parse_of(priv, dev); 509 510 priv->iface = NULL; 511 priv->cnt = 0; 512 513 mutex_init(&priv->lock); 514 515 i2c_set_clientdata(i2c, priv); 516 517 regmap = devm_regmap_init_i2c(i2c, regmap_cfg); 518 if (IS_ERR(regmap)) 519 return PTR_ERR(regmap); 520 521 return snd_soc_register_codec(dev, &soc_codec_dev_ak4613, 522 &ak4613_dai, 1); 523 } 524 525 static int ak4613_i2c_remove(struct i2c_client *client) 526 { 527 snd_soc_unregister_codec(&client->dev); 528 return 0; 529 } 530 531 static struct i2c_driver ak4613_i2c_driver = { 532 .driver = { 533 .name = "ak4613-codec", 534 .of_match_table = ak4613_of_match, 535 }, 536 .probe = ak4613_i2c_probe, 537 .remove = ak4613_i2c_remove, 538 .id_table = ak4613_i2c_id, 539 }; 540 541 module_i2c_driver(ak4613_i2c_driver); 542 543 MODULE_DESCRIPTION("Soc AK4613 driver"); 544 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 545 MODULE_LICENSE("GPL v2"); 546