1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // Driver for the Texas Instruments TAS2562 CODEC 4 // Copyright (C) 2019 Texas Instruments Inc. 5 6 7 #include <linux/module.h> 8 #include <linux/errno.h> 9 #include <linux/device.h> 10 #include <linux/i2c.h> 11 #include <linux/pm_runtime.h> 12 #include <linux/regmap.h> 13 #include <linux/slab.h> 14 #include <linux/gpio/consumer.h> 15 #include <linux/regulator/consumer.h> 16 #include <linux/delay.h> 17 18 #include <sound/pcm.h> 19 #include <sound/pcm_params.h> 20 #include <sound/soc.h> 21 #include <sound/soc-dapm.h> 22 #include <sound/tlv.h> 23 24 #include "tas2562.h" 25 26 #define TAS2562_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE |\ 27 SNDRV_PCM_FORMAT_S32_LE) 28 29 struct tas2562_data { 30 struct snd_soc_component *component; 31 struct gpio_desc *sdz_gpio; 32 struct regmap *regmap; 33 struct device *dev; 34 struct i2c_client *client; 35 int v_sense_slot; 36 int i_sense_slot; 37 }; 38 39 static int tas2562_set_bias_level(struct snd_soc_component *component, 40 enum snd_soc_bias_level level) 41 { 42 struct tas2562_data *tas2562 = 43 snd_soc_component_get_drvdata(component); 44 45 switch (level) { 46 case SND_SOC_BIAS_ON: 47 snd_soc_component_update_bits(component, 48 TAS2562_PWR_CTRL, 49 TAS2562_MODE_MASK, TAS2562_ACTIVE); 50 break; 51 case SND_SOC_BIAS_STANDBY: 52 case SND_SOC_BIAS_PREPARE: 53 snd_soc_component_update_bits(component, 54 TAS2562_PWR_CTRL, 55 TAS2562_MODE_MASK, TAS2562_MUTE); 56 break; 57 case SND_SOC_BIAS_OFF: 58 snd_soc_component_update_bits(component, 59 TAS2562_PWR_CTRL, 60 TAS2562_MODE_MASK, TAS2562_SHUTDOWN); 61 break; 62 63 default: 64 dev_err(tas2562->dev, 65 "wrong power level setting %d\n", level); 66 return -EINVAL; 67 } 68 69 return 0; 70 } 71 72 static int tas2562_set_samplerate(struct tas2562_data *tas2562, int samplerate) 73 { 74 int samp_rate; 75 int ramp_rate; 76 77 switch (samplerate) { 78 case 7350: 79 ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1; 80 samp_rate = TAS2562_TDM_CFG0_SAMPRATE_7305_8KHZ; 81 break; 82 case 8000: 83 ramp_rate = 0; 84 samp_rate = TAS2562_TDM_CFG0_SAMPRATE_7305_8KHZ; 85 break; 86 case 14700: 87 ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1; 88 samp_rate = TAS2562_TDM_CFG0_SAMPRATE_14_7_16KHZ; 89 break; 90 case 16000: 91 ramp_rate = 0; 92 samp_rate = TAS2562_TDM_CFG0_SAMPRATE_14_7_16KHZ; 93 break; 94 case 22050: 95 ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1; 96 samp_rate = TAS2562_TDM_CFG0_SAMPRATE_22_05_24KHZ; 97 break; 98 case 24000: 99 ramp_rate = 0; 100 samp_rate = TAS2562_TDM_CFG0_SAMPRATE_22_05_24KHZ; 101 break; 102 case 29400: 103 ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1; 104 samp_rate = TAS2562_TDM_CFG0_SAMPRATE_29_4_32KHZ; 105 break; 106 case 32000: 107 ramp_rate = 0; 108 samp_rate = TAS2562_TDM_CFG0_SAMPRATE_29_4_32KHZ; 109 break; 110 case 44100: 111 ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1; 112 samp_rate = TAS2562_TDM_CFG0_SAMPRATE_44_1_48KHZ; 113 break; 114 case 48000: 115 ramp_rate = 0; 116 samp_rate = TAS2562_TDM_CFG0_SAMPRATE_44_1_48KHZ; 117 break; 118 case 88200: 119 ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1; 120 samp_rate = TAS2562_TDM_CFG0_SAMPRATE_88_2_96KHZ; 121 break; 122 case 96000: 123 ramp_rate = 0; 124 samp_rate = TAS2562_TDM_CFG0_SAMPRATE_88_2_96KHZ; 125 break; 126 case 176400: 127 ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1; 128 samp_rate = TAS2562_TDM_CFG0_SAMPRATE_176_4_192KHZ; 129 break; 130 case 192000: 131 ramp_rate = 0; 132 samp_rate = TAS2562_TDM_CFG0_SAMPRATE_176_4_192KHZ; 133 break; 134 default: 135 dev_info(tas2562->dev, "%s, unsupported sample rate, %d\n", 136 __func__, samplerate); 137 return -EINVAL; 138 } 139 140 snd_soc_component_update_bits(tas2562->component, TAS2562_TDM_CFG0, 141 TAS2562_TDM_CFG0_RAMPRATE_MASK, ramp_rate); 142 snd_soc_component_update_bits(tas2562->component, TAS2562_TDM_CFG0, 143 TAS2562_TDM_CFG0_SAMPRATE_MASK, samp_rate); 144 145 return 0; 146 } 147 148 static int tas2562_set_dai_tdm_slot(struct snd_soc_dai *dai, 149 unsigned int tx_mask, unsigned int rx_mask, 150 int slots, int slot_width) 151 { 152 struct snd_soc_component *component = dai->component; 153 struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component); 154 int ret = 0; 155 156 switch (slot_width) { 157 case 16: 158 ret = snd_soc_component_update_bits(component, 159 TAS2562_TDM_CFG2, 160 TAS2562_TDM_CFG2_RXLEN_MASK, 161 TAS2562_TDM_CFG2_RXLEN_16B); 162 break; 163 case 24: 164 ret = snd_soc_component_update_bits(component, 165 TAS2562_TDM_CFG2, 166 TAS2562_TDM_CFG2_RXLEN_MASK, 167 TAS2562_TDM_CFG2_RXLEN_24B); 168 break; 169 case 32: 170 ret = snd_soc_component_update_bits(component, 171 TAS2562_TDM_CFG2, 172 TAS2562_TDM_CFG2_RXLEN_MASK, 173 TAS2562_TDM_CFG2_RXLEN_32B); 174 break; 175 176 case 0: 177 /* Do not change slot width */ 178 break; 179 default: 180 dev_err(tas2562->dev, "slot width not supported"); 181 ret = -EINVAL; 182 } 183 184 if (ret < 0) 185 return ret; 186 187 return 0; 188 } 189 190 static int tas2562_set_bitwidth(struct tas2562_data *tas2562, int bitwidth) 191 { 192 int ret; 193 194 switch (bitwidth) { 195 case SNDRV_PCM_FORMAT_S16_LE: 196 snd_soc_component_update_bits(tas2562->component, 197 TAS2562_TDM_CFG2, 198 TAS2562_TDM_CFG2_RXWLEN_MASK, 199 TAS2562_TDM_CFG2_RXWLEN_16B); 200 tas2562->v_sense_slot = tas2562->i_sense_slot + 2; 201 break; 202 case SNDRV_PCM_FORMAT_S24_LE: 203 snd_soc_component_update_bits(tas2562->component, 204 TAS2562_TDM_CFG2, 205 TAS2562_TDM_CFG2_RXWLEN_MASK, 206 TAS2562_TDM_CFG2_RXWLEN_24B); 207 tas2562->v_sense_slot = tas2562->i_sense_slot + 4; 208 break; 209 case SNDRV_PCM_FORMAT_S32_LE: 210 snd_soc_component_update_bits(tas2562->component, 211 TAS2562_TDM_CFG2, 212 TAS2562_TDM_CFG2_RXWLEN_MASK, 213 TAS2562_TDM_CFG2_RXWLEN_32B); 214 tas2562->v_sense_slot = tas2562->i_sense_slot + 4; 215 break; 216 217 default: 218 dev_info(tas2562->dev, "Not supported params format\n"); 219 } 220 221 ret = snd_soc_component_update_bits(tas2562->component, 222 TAS2562_TDM_CFG5, 223 TAS2562_TDM_CFG5_VSNS_EN | TAS2562_TDM_CFG5_VSNS_SLOT_MASK, 224 TAS2562_TDM_CFG5_VSNS_EN | tas2562->v_sense_slot); 225 if (ret < 0) 226 return ret; 227 228 ret = snd_soc_component_update_bits(tas2562->component, 229 TAS2562_TDM_CFG6, 230 TAS2562_TDM_CFG6_ISNS_EN | TAS2562_TDM_CFG6_ISNS_SLOT_MASK, 231 TAS2562_TDM_CFG6_ISNS_EN | tas2562->i_sense_slot); 232 if (ret < 0) 233 return ret; 234 235 return 0; 236 } 237 238 static int tas2562_hw_params(struct snd_pcm_substream *substream, 239 struct snd_pcm_hw_params *params, 240 struct snd_soc_dai *dai) 241 { 242 struct snd_soc_component *component = dai->component; 243 struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component); 244 int ret; 245 246 ret = tas2562_set_bitwidth(tas2562, params_format(params)); 247 if (ret) { 248 dev_err(tas2562->dev, "set bitwidth failed, %d\n", ret); 249 return ret; 250 } 251 252 ret = tas2562_set_samplerate(tas2562, params_rate(params)); 253 if (ret) 254 dev_err(tas2562->dev, "set bitwidth failed, %d\n", ret); 255 256 return ret; 257 } 258 259 static int tas2562_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) 260 { 261 struct snd_soc_component *component = dai->component; 262 struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component); 263 u8 tdm_rx_start_slot = 0, asi_cfg_1 = 0; 264 int ret; 265 266 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 267 case SND_SOC_DAIFMT_NB_NF: 268 asi_cfg_1 = 0; 269 break; 270 case SND_SOC_DAIFMT_IB_NF: 271 asi_cfg_1 |= TAS2562_TDM_CFG1_RX_FALLING; 272 break; 273 default: 274 dev_err(tas2562->dev, "ASI format Inverse is not found\n"); 275 return -EINVAL; 276 } 277 278 ret = snd_soc_component_update_bits(component, TAS2562_TDM_CFG1, 279 TAS2562_TDM_CFG1_RX_EDGE_MASK, 280 asi_cfg_1); 281 if (ret < 0) { 282 dev_err(tas2562->dev, "Failed to set RX edge\n"); 283 return ret; 284 } 285 286 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 287 case (SND_SOC_DAIFMT_I2S): 288 case (SND_SOC_DAIFMT_DSP_A): 289 case (SND_SOC_DAIFMT_DSP_B): 290 tdm_rx_start_slot = BIT(1); 291 break; 292 case (SND_SOC_DAIFMT_LEFT_J): 293 tdm_rx_start_slot = 0; 294 break; 295 default: 296 dev_err(tas2562->dev, "DAI Format is not found, fmt=0x%x\n", 297 fmt); 298 ret = -EINVAL; 299 break; 300 } 301 302 ret = snd_soc_component_update_bits(component, TAS2562_TDM_CFG1, 303 TAS2562_TDM_CFG1_RX_OFFSET_MASK, 304 tdm_rx_start_slot); 305 306 if (ret < 0) 307 return ret; 308 309 return 0; 310 } 311 312 static int tas2562_mute(struct snd_soc_dai *dai, int mute) 313 { 314 struct snd_soc_component *component = dai->component; 315 316 return snd_soc_component_update_bits(component, TAS2562_PWR_CTRL, 317 TAS2562_MODE_MASK, 318 mute ? TAS2562_MUTE : 0); 319 } 320 321 static int tas2562_codec_probe(struct snd_soc_component *component) 322 { 323 struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component); 324 int ret; 325 326 tas2562->component = component; 327 328 if (tas2562->sdz_gpio) 329 gpiod_set_value_cansleep(tas2562->sdz_gpio, 1); 330 331 ret = snd_soc_component_update_bits(component, TAS2562_PWR_CTRL, 332 TAS2562_MODE_MASK, TAS2562_MUTE); 333 if (ret < 0) 334 return ret; 335 336 return 0; 337 } 338 339 #ifdef CONFIG_PM 340 static int tas2562_suspend(struct snd_soc_component *component) 341 { 342 struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component); 343 344 regcache_cache_only(tas2562->regmap, true); 345 regcache_mark_dirty(tas2562->regmap); 346 347 if (tas2562->sdz_gpio) 348 gpiod_set_value_cansleep(tas2562->sdz_gpio, 0); 349 350 return 0; 351 } 352 353 static int tas2562_resume(struct snd_soc_component *component) 354 { 355 struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component); 356 357 if (tas2562->sdz_gpio) 358 gpiod_set_value_cansleep(tas2562->sdz_gpio, 1); 359 360 regcache_cache_only(tas2562->regmap, false); 361 362 return regcache_sync(tas2562->regmap); 363 } 364 #else 365 #define tas2562_suspend NULL 366 #define tas2562_resume NULL 367 #endif 368 369 static const char * const tas2562_ASI1_src[] = { 370 "I2C offset", "Left", "Right", "LeftRightDiv2", 371 }; 372 373 static SOC_ENUM_SINGLE_DECL(tas2562_ASI1_src_enum, TAS2562_TDM_CFG2, 4, 374 tas2562_ASI1_src); 375 376 static const struct snd_kcontrol_new tas2562_asi1_mux = 377 SOC_DAPM_ENUM("ASI1 Source", tas2562_ASI1_src_enum); 378 379 static int tas2562_dac_event(struct snd_soc_dapm_widget *w, 380 struct snd_kcontrol *kcontrol, int event) 381 { 382 struct snd_soc_component *component = 383 snd_soc_dapm_to_component(w->dapm); 384 struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component); 385 386 switch (event) { 387 case SND_SOC_DAPM_POST_PMU: 388 dev_info(tas2562->dev, "SND_SOC_DAPM_POST_PMU\n"); 389 break; 390 case SND_SOC_DAPM_PRE_PMD: 391 dev_info(tas2562->dev, "SND_SOC_DAPM_PRE_PMD\n"); 392 break; 393 default: 394 break; 395 } 396 397 return 0; 398 } 399 400 static DECLARE_TLV_DB_SCALE(tas2562_dac_tlv, 850, 50, 0); 401 402 static const struct snd_kcontrol_new isense_switch = 403 SOC_DAPM_SINGLE("Switch", TAS2562_PWR_CTRL, TAS2562_ISENSE_POWER_EN, 404 1, 1); 405 406 static const struct snd_kcontrol_new vsense_switch = 407 SOC_DAPM_SINGLE("Switch", TAS2562_PWR_CTRL, TAS2562_VSENSE_POWER_EN, 408 1, 1); 409 410 static const struct snd_kcontrol_new tas2562_snd_controls[] = { 411 SOC_SINGLE_TLV("Amp Gain Volume", TAS2562_PB_CFG1, 0, 0x1c, 0, 412 tas2562_dac_tlv), 413 }; 414 415 static const struct snd_soc_dapm_widget tas2562_dapm_widgets[] = { 416 SND_SOC_DAPM_AIF_IN("ASI1", "ASI1 Playback", 0, SND_SOC_NOPM, 0, 0), 417 SND_SOC_DAPM_MUX("ASI1 Sel", SND_SOC_NOPM, 0, 0, &tas2562_asi1_mux), 418 SND_SOC_DAPM_AIF_IN("DAC IN", "Playback", 0, SND_SOC_NOPM, 0, 0), 419 SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2562_dac_event, 420 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), 421 SND_SOC_DAPM_SWITCH("ISENSE", TAS2562_PWR_CTRL, 3, 1, &isense_switch), 422 SND_SOC_DAPM_SWITCH("VSENSE", TAS2562_PWR_CTRL, 2, 1, &vsense_switch), 423 SND_SOC_DAPM_SIGGEN("VMON"), 424 SND_SOC_DAPM_SIGGEN("IMON"), 425 SND_SOC_DAPM_OUTPUT("OUT"), 426 }; 427 428 static const struct snd_soc_dapm_route tas2562_audio_map[] = { 429 {"ASI1 Sel", "I2C offset", "ASI1"}, 430 {"ASI1 Sel", "Left", "ASI1"}, 431 {"ASI1 Sel", "Right", "ASI1"}, 432 {"ASI1 Sel", "LeftRightDiv2", "ASI1"}, 433 { "DAC", NULL, "DAC IN" }, 434 { "OUT", NULL, "DAC" }, 435 {"ISENSE", "Switch", "IMON"}, 436 {"VSENSE", "Switch", "VMON"}, 437 }; 438 439 static const struct snd_soc_component_driver soc_component_dev_tas2562 = { 440 .probe = tas2562_codec_probe, 441 .suspend = tas2562_suspend, 442 .resume = tas2562_resume, 443 .set_bias_level = tas2562_set_bias_level, 444 .controls = tas2562_snd_controls, 445 .num_controls = ARRAY_SIZE(tas2562_snd_controls), 446 .dapm_widgets = tas2562_dapm_widgets, 447 .num_dapm_widgets = ARRAY_SIZE(tas2562_dapm_widgets), 448 .dapm_routes = tas2562_audio_map, 449 .num_dapm_routes = ARRAY_SIZE(tas2562_audio_map), 450 .idle_bias_on = 1, 451 .use_pmdown_time = 1, 452 .endianness = 1, 453 .non_legacy_dai_naming = 1, 454 }; 455 456 static const struct snd_soc_dai_ops tas2562_speaker_dai_ops = { 457 .hw_params = tas2562_hw_params, 458 .set_fmt = tas2562_set_dai_fmt, 459 .set_tdm_slot = tas2562_set_dai_tdm_slot, 460 .digital_mute = tas2562_mute, 461 }; 462 463 static struct snd_soc_dai_driver tas2562_dai[] = { 464 { 465 .name = "tas2562-amplifier", 466 .id = 0, 467 .playback = { 468 .stream_name = "ASI1 Playback", 469 .channels_min = 2, 470 .channels_max = 2, 471 .rates = SNDRV_PCM_RATE_8000_192000, 472 .formats = TAS2562_FORMATS, 473 }, 474 .ops = &tas2562_speaker_dai_ops, 475 }, 476 }; 477 478 static const struct regmap_range_cfg tas2562_ranges[] = { 479 { 480 .range_min = 0, 481 .range_max = 5 * 128, 482 .selector_reg = TAS2562_PAGE_CTRL, 483 .selector_mask = 0xff, 484 .selector_shift = 0, 485 .window_start = 0, 486 .window_len = 128, 487 }, 488 }; 489 490 static const struct reg_default tas2562_reg_defaults[] = { 491 { TAS2562_PAGE_CTRL, 0x00 }, 492 { TAS2562_SW_RESET, 0x00 }, 493 { TAS2562_PWR_CTRL, 0x0e }, 494 { TAS2562_PB_CFG1, 0x20 }, 495 { TAS2562_TDM_CFG0, 0x09 }, 496 { TAS2562_TDM_CFG1, 0x02 }, 497 }; 498 499 static const struct regmap_config tas2562_regmap_config = { 500 .reg_bits = 8, 501 .val_bits = 8, 502 503 .max_register = 5 * 128, 504 .cache_type = REGCACHE_RBTREE, 505 .reg_defaults = tas2562_reg_defaults, 506 .num_reg_defaults = ARRAY_SIZE(tas2562_reg_defaults), 507 .ranges = tas2562_ranges, 508 .num_ranges = ARRAY_SIZE(tas2562_ranges), 509 }; 510 511 static int tas2562_parse_dt(struct tas2562_data *tas2562) 512 { 513 struct device *dev = tas2562->dev; 514 int ret = 0; 515 516 tas2562->sdz_gpio = devm_gpiod_get_optional(dev, "shut-down-gpio", 517 GPIOD_OUT_HIGH); 518 if (IS_ERR(tas2562->sdz_gpio)) { 519 if (PTR_ERR(tas2562->sdz_gpio) == -EPROBE_DEFER) { 520 tas2562->sdz_gpio = NULL; 521 return -EPROBE_DEFER; 522 } 523 } 524 525 ret = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no", 526 &tas2562->i_sense_slot); 527 if (ret) 528 dev_err(dev, "Looking up %s property failed %d\n", 529 "ti,imon-slot-no", ret); 530 531 return ret; 532 } 533 534 static int tas2562_probe(struct i2c_client *client, 535 const struct i2c_device_id *id) 536 { 537 struct device *dev = &client->dev; 538 struct tas2562_data *data; 539 int ret; 540 541 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 542 if (!data) 543 return -ENOMEM; 544 545 data->client = client; 546 data->dev = &client->dev; 547 548 tas2562_parse_dt(data); 549 550 data->regmap = devm_regmap_init_i2c(client, &tas2562_regmap_config); 551 if (IS_ERR(data->regmap)) { 552 ret = PTR_ERR(data->regmap); 553 dev_err(dev, "failed to allocate register map: %d\n", ret); 554 return ret; 555 } 556 557 dev_set_drvdata(&client->dev, data); 558 559 return devm_snd_soc_register_component(dev, &soc_component_dev_tas2562, 560 tas2562_dai, 561 ARRAY_SIZE(tas2562_dai)); 562 563 } 564 565 static const struct i2c_device_id tas2562_id[] = { 566 { "tas2562", 0 }, 567 { } 568 }; 569 MODULE_DEVICE_TABLE(i2c, tas2562_id); 570 571 static const struct of_device_id tas2562_of_match[] = { 572 { .compatible = "ti,tas2562", }, 573 { }, 574 }; 575 MODULE_DEVICE_TABLE(of, tas2562_of_match); 576 577 static struct i2c_driver tas2562_i2c_driver = { 578 .driver = { 579 .name = "tas2562", 580 .of_match_table = of_match_ptr(tas2562_of_match), 581 }, 582 .probe = tas2562_probe, 583 .id_table = tas2562_id, 584 }; 585 586 module_i2c_driver(tas2562_i2c_driver); 587 588 MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>"); 589 MODULE_DESCRIPTION("TAS2562 Audio amplifier driver"); 590 MODULE_LICENSE("GPL"); 591