1 // SPDX-License-Identifier: GPL-2.0 2 3 // Copyright (c) 2019 MediaTek Inc. 4 5 #include <linux/module.h> 6 #include <linux/kernel.h> 7 #include <linux/err.h> 8 #include <linux/i2c.h> 9 #include <linux/pm_runtime.h> 10 #include <linux/delay.h> 11 #include <sound/soc.h> 12 #include <sound/tlv.h> 13 #include <sound/pcm_params.h> 14 15 #include "mt6660.h" 16 17 struct reg_size_table { 18 u32 addr; 19 u8 size; 20 }; 21 22 static const struct reg_size_table mt6660_reg_size_table[] = { 23 { MT6660_REG_HPF1_COEF, 4 }, 24 { MT6660_REG_HPF2_COEF, 4 }, 25 { MT6660_REG_TDM_CFG3, 2 }, 26 { MT6660_REG_RESV17, 2 }, 27 { MT6660_REG_RESV23, 2 }, 28 { MT6660_REG_SIGMAX, 2 }, 29 { MT6660_REG_DEVID, 2 }, 30 { MT6660_REG_HCLIP_CTRL, 2 }, 31 { MT6660_REG_DA_GAIN, 2 }, 32 }; 33 34 static int mt6660_get_reg_size(uint32_t addr) 35 { 36 int i; 37 38 for (i = 0; i < ARRAY_SIZE(mt6660_reg_size_table); i++) { 39 if (mt6660_reg_size_table[i].addr == addr) 40 return mt6660_reg_size_table[i].size; 41 } 42 return 1; 43 } 44 45 static int mt6660_reg_write(void *context, unsigned int reg, unsigned int val) 46 { 47 struct mt6660_chip *chip = context; 48 int size = mt6660_get_reg_size(reg); 49 u8 reg_data[4]; 50 int i; 51 52 for (i = 0; i < size; i++) 53 reg_data[size - i - 1] = (val >> (8 * i)) & 0xff; 54 55 return i2c_smbus_write_i2c_block_data(chip->i2c, reg, size, reg_data); 56 } 57 58 static int mt6660_reg_read(void *context, unsigned int reg, unsigned int *val) 59 { 60 struct mt6660_chip *chip = context; 61 int size = mt6660_get_reg_size(reg); 62 int i, ret; 63 u8 data[4]; 64 u32 reg_data = 0; 65 66 ret = i2c_smbus_read_i2c_block_data(chip->i2c, reg, size, data); 67 if (ret < 0) 68 return ret; 69 for (i = 0; i < size; i++) { 70 reg_data <<= 8; 71 reg_data |= data[i]; 72 } 73 *val = reg_data; 74 return 0; 75 } 76 77 static const struct regmap_config mt6660_regmap_config = { 78 .reg_bits = 8, 79 .val_bits = 32, 80 .reg_write = mt6660_reg_write, 81 .reg_read = mt6660_reg_read, 82 }; 83 84 static int mt6660_codec_dac_event(struct snd_soc_dapm_widget *w, 85 struct snd_kcontrol *kcontrol, int event) 86 { 87 if (event == SND_SOC_DAPM_POST_PMU) 88 usleep_range(1000, 1100); 89 return 0; 90 } 91 92 static int mt6660_codec_classd_event(struct snd_soc_dapm_widget *w, 93 struct snd_kcontrol *kcontrol, int event) 94 { 95 struct snd_soc_component *component = 96 snd_soc_dapm_to_component(w->dapm); 97 int ret; 98 99 switch (event) { 100 case SND_SOC_DAPM_PRE_PMU: 101 dev_dbg(component->dev, 102 "%s: before classd turn on\n", __func__); 103 /* config to adaptive mode */ 104 ret = snd_soc_component_update_bits(component, 105 MT6660_REG_BST_CTRL, 0x03, 0x03); 106 if (ret < 0) { 107 dev_err(component->dev, "config mode adaptive fail\n"); 108 return ret; 109 } 110 break; 111 case SND_SOC_DAPM_POST_PMU: 112 /* voltage sensing enable */ 113 ret = snd_soc_component_update_bits(component, 114 MT6660_REG_RESV7, 0x04, 0x04); 115 if (ret < 0) { 116 dev_err(component->dev, 117 "enable voltage sensing fail\n"); 118 return ret; 119 } 120 dev_dbg(component->dev, "Amp on\n"); 121 break; 122 case SND_SOC_DAPM_PRE_PMD: 123 dev_dbg(component->dev, "Amp off\n"); 124 /* voltage sensing disable */ 125 ret = snd_soc_component_update_bits(component, 126 MT6660_REG_RESV7, 0x04, 0x00); 127 if (ret < 0) { 128 dev_err(component->dev, 129 "disable voltage sensing fail\n"); 130 return ret; 131 } 132 /* pop-noise improvement 1 */ 133 ret = snd_soc_component_update_bits(component, 134 MT6660_REG_RESV10, 0x10, 0x10); 135 if (ret < 0) { 136 dev_err(component->dev, 137 "pop-noise improvement 1 fail\n"); 138 return ret; 139 } 140 break; 141 case SND_SOC_DAPM_POST_PMD: 142 dev_dbg(component->dev, 143 "%s: after classd turn off\n", __func__); 144 /* pop-noise improvement 2 */ 145 ret = snd_soc_component_update_bits(component, 146 MT6660_REG_RESV10, 0x10, 0x00); 147 if (ret < 0) { 148 dev_err(component->dev, 149 "pop-noise improvement 2 fail\n"); 150 return ret; 151 } 152 /* config to off mode */ 153 ret = snd_soc_component_update_bits(component, 154 MT6660_REG_BST_CTRL, 0x03, 0x00); 155 if (ret < 0) { 156 dev_err(component->dev, "config mode off fail\n"); 157 return ret; 158 } 159 break; 160 } 161 return 0; 162 } 163 164 static const struct snd_soc_dapm_widget mt6660_component_dapm_widgets[] = { 165 SND_SOC_DAPM_DAC_E("DAC", NULL, MT6660_REG_PLL_CFG1, 166 0, 1, mt6660_codec_dac_event, SND_SOC_DAPM_POST_PMU), 167 SND_SOC_DAPM_ADC("VI ADC", NULL, SND_SOC_NOPM, 0, 0), 168 SND_SOC_DAPM_PGA("PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 169 SND_SOC_DAPM_OUT_DRV_E("ClassD", MT6660_REG_SYSTEM_CTRL, 2, 0, 170 NULL, 0, mt6660_codec_classd_event, 171 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | 172 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD), 173 SND_SOC_DAPM_OUTPUT("OUTP"), 174 SND_SOC_DAPM_OUTPUT("OUTN"), 175 }; 176 177 static const struct snd_soc_dapm_route mt6660_component_dapm_routes[] = { 178 { "DAC", NULL, "aif_playback" }, 179 { "PGA", NULL, "DAC" }, 180 { "ClassD", NULL, "PGA" }, 181 { "OUTP", NULL, "ClassD" }, 182 { "OUTN", NULL, "ClassD" }, 183 { "VI ADC", NULL, "ClassD" }, 184 { "aif_capture", NULL, "VI ADC" }, 185 }; 186 187 static int mt6660_component_get_volsw(struct snd_kcontrol *kcontrol, 188 struct snd_ctl_elem_value *ucontrol) 189 { 190 struct snd_soc_component *component = 191 snd_soc_kcontrol_component(kcontrol); 192 struct mt6660_chip *chip = (struct mt6660_chip *) 193 snd_soc_component_get_drvdata(component); 194 195 ucontrol->value.integer.value[0] = chip->chip_rev & 0x0f; 196 return 0; 197 } 198 199 static const DECLARE_TLV_DB_SCALE(vol_ctl_tlv, -1155, 5, 0); 200 201 static const struct snd_kcontrol_new mt6660_component_snd_controls[] = { 202 SOC_SINGLE_TLV("Digital Volume", MT6660_REG_VOL_CTRL, 0, 255, 203 1, vol_ctl_tlv), 204 SOC_SINGLE("Hard Clip Switch", MT6660_REG_HCLIP_CTRL, 8, 1, 0), 205 SOC_SINGLE("Clip Switch", MT6660_REG_SPS_CTRL, 0, 1, 0), 206 SOC_SINGLE("Boost Mode", MT6660_REG_BST_CTRL, 0, 3, 0), 207 SOC_SINGLE("DRE Switch", MT6660_REG_DRE_CTRL, 0, 1, 0), 208 SOC_SINGLE("DC Protect Switch", MT6660_REG_DC_PROTECT_CTRL, 3, 1, 0), 209 SOC_SINGLE("Data Output Left Channel Selection", 210 MT6660_REG_DATAO_SEL, 3, 7, 0), 211 SOC_SINGLE("Data Output Right Channel Selection", 212 MT6660_REG_DATAO_SEL, 0, 7, 0), 213 SOC_SINGLE_EXT("T0 SEL", MT6660_REG_CALI_T0, 0, 7, 0, 214 snd_soc_get_volsw, NULL), 215 SOC_SINGLE_EXT("Chip Rev", MT6660_REG_DEVID, 8, 15, 0, 216 mt6660_component_get_volsw, NULL), 217 }; 218 219 static int _mt6660_chip_power_on(struct mt6660_chip *chip, int on_off) 220 { 221 return regmap_write_bits(chip->regmap, MT6660_REG_SYSTEM_CTRL, 222 0x01, on_off ? 0x00 : 0x01); 223 } 224 225 struct reg_table { 226 uint32_t addr; 227 uint32_t mask; 228 uint32_t val; 229 }; 230 231 static const struct reg_table mt6660_setting_table[] = { 232 { 0x20, 0x80, 0x00 }, 233 { 0x30, 0x01, 0x00 }, 234 { 0x50, 0x1c, 0x04 }, 235 { 0xB1, 0x0c, 0x00 }, 236 { 0xD3, 0x03, 0x03 }, 237 { 0xE0, 0x01, 0x00 }, 238 { 0x98, 0x44, 0x04 }, 239 { 0xB9, 0xff, 0x82 }, 240 { 0xB7, 0x7777, 0x7273 }, 241 { 0xB6, 0x07, 0x03 }, 242 { 0x6B, 0xe0, 0x20 }, 243 { 0x07, 0xff, 0x70 }, 244 { 0xBB, 0xff, 0x20 }, 245 { 0x69, 0xff, 0x40 }, 246 { 0xBD, 0xffff, 0x17f8 }, 247 { 0x70, 0xff, 0x15 }, 248 { 0x7C, 0xff, 0x00 }, 249 { 0x46, 0xff, 0x1d }, 250 { 0x1A, 0xffffffff, 0x7fdb7ffe }, 251 { 0x1B, 0xffffffff, 0x7fdb7ffe }, 252 { 0x51, 0xff, 0x58 }, 253 { 0xA2, 0xff, 0xce }, 254 { 0x33, 0xffff, 0x7fff }, 255 { 0x4C, 0xffff, 0x0116 }, 256 { 0x16, 0x1800, 0x0800 }, 257 { 0x68, 0x1f, 0x07 }, 258 }; 259 260 static int mt6660_component_setting(struct snd_soc_component *component) 261 { 262 struct mt6660_chip *chip = snd_soc_component_get_drvdata(component); 263 int ret = 0; 264 size_t i = 0; 265 266 ret = _mt6660_chip_power_on(chip, 1); 267 if (ret < 0) { 268 dev_err(component->dev, "%s chip power on failed\n", __func__); 269 return ret; 270 } 271 272 for (i = 0; i < ARRAY_SIZE(mt6660_setting_table); i++) { 273 ret = snd_soc_component_update_bits(component, 274 mt6660_setting_table[i].addr, 275 mt6660_setting_table[i].mask, 276 mt6660_setting_table[i].val); 277 if (ret < 0) { 278 dev_err(component->dev, "%s update 0x%02x failed\n", 279 __func__, mt6660_setting_table[i].addr); 280 return ret; 281 } 282 } 283 284 ret = _mt6660_chip_power_on(chip, 0); 285 if (ret < 0) { 286 dev_err(component->dev, "%s chip power off failed\n", __func__); 287 return ret; 288 } 289 290 return 0; 291 } 292 293 static int mt6660_component_probe(struct snd_soc_component *component) 294 { 295 struct mt6660_chip *chip = snd_soc_component_get_drvdata(component); 296 int ret; 297 298 dev_dbg(component->dev, "%s\n", __func__); 299 snd_soc_component_init_regmap(component, chip->regmap); 300 301 ret = mt6660_component_setting(component); 302 if (ret < 0) 303 dev_err(chip->dev, "mt6660 component setting failed\n"); 304 305 return ret; 306 } 307 308 static void mt6660_component_remove(struct snd_soc_component *component) 309 { 310 dev_dbg(component->dev, "%s\n", __func__); 311 snd_soc_component_exit_regmap(component); 312 } 313 314 static const struct snd_soc_component_driver mt6660_component_driver = { 315 .probe = mt6660_component_probe, 316 .remove = mt6660_component_remove, 317 318 .controls = mt6660_component_snd_controls, 319 .num_controls = ARRAY_SIZE(mt6660_component_snd_controls), 320 .dapm_widgets = mt6660_component_dapm_widgets, 321 .num_dapm_widgets = ARRAY_SIZE(mt6660_component_dapm_widgets), 322 .dapm_routes = mt6660_component_dapm_routes, 323 .num_dapm_routes = ARRAY_SIZE(mt6660_component_dapm_routes), 324 325 .idle_bias_on = false, /* idle_bias_off = true */ 326 .endianness = 1, 327 }; 328 329 static int mt6660_component_aif_hw_params(struct snd_pcm_substream *substream, 330 struct snd_pcm_hw_params *hw_params, struct snd_soc_dai *dai) 331 { 332 int word_len = params_physical_width(hw_params); 333 int aud_bit = params_width(hw_params); 334 u16 reg_data = 0; 335 int ret; 336 337 dev_dbg(dai->dev, "%s: ++\n", __func__); 338 dev_dbg(dai->dev, "format: 0x%08x\n", params_format(hw_params)); 339 dev_dbg(dai->dev, "rate: 0x%08x\n", params_rate(hw_params)); 340 dev_dbg(dai->dev, "word_len: %d, aud_bit: %d\n", word_len, aud_bit); 341 if (word_len > 32 || word_len < 16) { 342 dev_err(dai->dev, "not supported word length\n"); 343 return -ENOTSUPP; 344 } 345 switch (aud_bit) { 346 case 16: 347 reg_data = 3; 348 break; 349 case 18: 350 reg_data = 2; 351 break; 352 case 20: 353 reg_data = 1; 354 break; 355 case 24: 356 case 32: 357 reg_data = 0; 358 break; 359 default: 360 return -ENOTSUPP; 361 } 362 ret = snd_soc_component_update_bits(dai->component, 363 MT6660_REG_SERIAL_CFG1, 0xc0, (reg_data << 6)); 364 if (ret < 0) { 365 dev_err(dai->dev, "config aud bit fail\n"); 366 return ret; 367 } 368 ret = snd_soc_component_update_bits(dai->component, 369 MT6660_REG_TDM_CFG3, 0x3f0, word_len << 4); 370 if (ret < 0) { 371 dev_err(dai->dev, "config word len fail\n"); 372 return ret; 373 } 374 dev_dbg(dai->dev, "%s: --\n", __func__); 375 return 0; 376 } 377 378 static const struct snd_soc_dai_ops mt6660_component_aif_ops = { 379 .hw_params = mt6660_component_aif_hw_params, 380 }; 381 382 #define STUB_RATES SNDRV_PCM_RATE_8000_192000 383 #define STUB_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ 384 SNDRV_PCM_FMTBIT_U16_LE | \ 385 SNDRV_PCM_FMTBIT_S24_LE | \ 386 SNDRV_PCM_FMTBIT_U24_LE | \ 387 SNDRV_PCM_FMTBIT_S32_LE | \ 388 SNDRV_PCM_FMTBIT_U32_LE) 389 390 static struct snd_soc_dai_driver mt6660_codec_dai = { 391 .name = "mt6660-aif", 392 .playback = { 393 .stream_name = "aif_playback", 394 .channels_min = 1, 395 .channels_max = 2, 396 .rates = STUB_RATES, 397 .formats = STUB_FORMATS, 398 }, 399 .capture = { 400 .stream_name = "aif_capture", 401 .channels_min = 1, 402 .channels_max = 2, 403 .rates = STUB_RATES, 404 .formats = STUB_FORMATS, 405 }, 406 /* dai properties */ 407 .symmetric_rate = 1, 408 .symmetric_channels = 1, 409 .symmetric_sample_bits = 1, 410 /* dai operations */ 411 .ops = &mt6660_component_aif_ops, 412 }; 413 414 static int _mt6660_chip_id_check(struct mt6660_chip *chip) 415 { 416 int ret; 417 unsigned int val; 418 419 ret = regmap_read(chip->regmap, MT6660_REG_DEVID, &val); 420 if (ret < 0) 421 return ret; 422 val &= 0x0ff0; 423 if (val != 0x00e0 && val != 0x01e0) { 424 dev_err(chip->dev, "%s id(%x) not match\n", __func__, val); 425 return -ENODEV; 426 } 427 return 0; 428 } 429 430 static int _mt6660_chip_sw_reset(struct mt6660_chip *chip) 431 { 432 int ret; 433 434 /* turn on main pll first, then trigger reset */ 435 ret = regmap_write(chip->regmap, MT6660_REG_SYSTEM_CTRL, 0x00); 436 if (ret < 0) 437 return ret; 438 ret = regmap_write(chip->regmap, MT6660_REG_SYSTEM_CTRL, 0x80); 439 if (ret < 0) 440 return ret; 441 msleep(30); 442 return 0; 443 } 444 445 static int _mt6660_read_chip_revision(struct mt6660_chip *chip) 446 { 447 int ret; 448 unsigned int val; 449 450 ret = regmap_read(chip->regmap, MT6660_REG_DEVID, &val); 451 if (ret < 0) { 452 dev_err(chip->dev, "get chip revision fail\n"); 453 return ret; 454 } 455 chip->chip_rev = val&0xff; 456 dev_info(chip->dev, "%s chip_rev = %x\n", __func__, chip->chip_rev); 457 return 0; 458 } 459 460 static int mt6660_i2c_probe(struct i2c_client *client) 461 { 462 struct mt6660_chip *chip = NULL; 463 int ret; 464 465 dev_dbg(&client->dev, "%s\n", __func__); 466 chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL); 467 if (!chip) 468 return -ENOMEM; 469 chip->i2c = client; 470 chip->dev = &client->dev; 471 mutex_init(&chip->io_lock); 472 i2c_set_clientdata(client, chip); 473 474 chip->regmap = devm_regmap_init(&client->dev, 475 NULL, chip, &mt6660_regmap_config); 476 if (IS_ERR(chip->regmap)) { 477 ret = PTR_ERR(chip->regmap); 478 dev_err(&client->dev, "failed to initialise regmap: %d\n", ret); 479 return ret; 480 } 481 482 /* chip reset first */ 483 ret = _mt6660_chip_sw_reset(chip); 484 if (ret < 0) { 485 dev_err(chip->dev, "chip reset fail\n"); 486 goto probe_fail; 487 } 488 /* chip power on */ 489 ret = _mt6660_chip_power_on(chip, 1); 490 if (ret < 0) { 491 dev_err(chip->dev, "chip power on 2 fail\n"); 492 goto probe_fail; 493 } 494 /* chip devid check */ 495 ret = _mt6660_chip_id_check(chip); 496 if (ret < 0) { 497 dev_err(chip->dev, "chip id check fail\n"); 498 goto probe_fail; 499 } 500 /* chip revision get */ 501 ret = _mt6660_read_chip_revision(chip); 502 if (ret < 0) { 503 dev_err(chip->dev, "read chip revision fail\n"); 504 goto probe_fail; 505 } 506 pm_runtime_set_active(chip->dev); 507 pm_runtime_enable(chip->dev); 508 509 ret = devm_snd_soc_register_component(chip->dev, 510 &mt6660_component_driver, 511 &mt6660_codec_dai, 1); 512 return ret; 513 probe_fail: 514 _mt6660_chip_power_on(chip, 0); 515 mutex_destroy(&chip->io_lock); 516 return ret; 517 } 518 519 static int mt6660_i2c_remove(struct i2c_client *client) 520 { 521 struct mt6660_chip *chip = i2c_get_clientdata(client); 522 523 pm_runtime_disable(chip->dev); 524 pm_runtime_set_suspended(chip->dev); 525 mutex_destroy(&chip->io_lock); 526 return 0; 527 } 528 529 static int __maybe_unused mt6660_i2c_runtime_suspend(struct device *dev) 530 { 531 struct mt6660_chip *chip = dev_get_drvdata(dev); 532 533 dev_dbg(dev, "enter low power mode\n"); 534 return regmap_update_bits(chip->regmap, 535 MT6660_REG_SYSTEM_CTRL, 0x01, 0x01); 536 } 537 538 static int __maybe_unused mt6660_i2c_runtime_resume(struct device *dev) 539 { 540 struct mt6660_chip *chip = dev_get_drvdata(dev); 541 542 dev_dbg(dev, "exit low power mode\n"); 543 return regmap_update_bits(chip->regmap, 544 MT6660_REG_SYSTEM_CTRL, 0x01, 0x00); 545 } 546 547 static const struct dev_pm_ops mt6660_dev_pm_ops = { 548 SET_RUNTIME_PM_OPS(mt6660_i2c_runtime_suspend, 549 mt6660_i2c_runtime_resume, NULL) 550 }; 551 552 static const struct of_device_id __maybe_unused mt6660_of_id[] = { 553 { .compatible = "mediatek,mt6660",}, 554 {}, 555 }; 556 MODULE_DEVICE_TABLE(of, mt6660_of_id); 557 558 static const struct i2c_device_id mt6660_i2c_id[] = { 559 {"mt6660", 0 }, 560 {}, 561 }; 562 MODULE_DEVICE_TABLE(i2c, mt6660_i2c_id); 563 564 static struct i2c_driver mt6660_i2c_driver = { 565 .driver = { 566 .name = "mt6660", 567 .of_match_table = of_match_ptr(mt6660_of_id), 568 .pm = &mt6660_dev_pm_ops, 569 }, 570 .probe_new = mt6660_i2c_probe, 571 .remove = mt6660_i2c_remove, 572 .id_table = mt6660_i2c_id, 573 }; 574 module_i2c_driver(mt6660_i2c_driver); 575 576 MODULE_AUTHOR("Jeff Chang <jeff_chang@richtek.com>"); 577 MODULE_DESCRIPTION("MT6660 SPKAMP Driver"); 578 MODULE_LICENSE("GPL"); 579 MODULE_VERSION("1.0.8_G"); 580