1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // ALSA SoC Texas Instruments TAS2770 20-W Digital Input Mono Class-D 4 // Audio Amplifier with Speaker I/V Sense 5 // 6 // Copyright (C) 2016-2017 Texas Instruments Incorporated - https://www.ti.com/ 7 // Author: Tracy Yi <tracy-yi@ti.com> 8 // Frank Shi <shifu0704@thundersoft.com> 9 10 #include <linux/module.h> 11 #include <linux/moduleparam.h> 12 #include <linux/err.h> 13 #include <linux/init.h> 14 #include <linux/delay.h> 15 #include <linux/hwmon.h> 16 #include <linux/pm.h> 17 #include <linux/i2c.h> 18 #include <linux/gpio/consumer.h> 19 #include <linux/regulator/consumer.h> 20 #include <linux/firmware.h> 21 #include <linux/regmap.h> 22 #include <linux/of.h> 23 #include <linux/slab.h> 24 #include <sound/soc.h> 25 #include <sound/pcm.h> 26 #include <sound/pcm_params.h> 27 #include <sound/initval.h> 28 #include <sound/tlv.h> 29 30 #include "tas2770.h" 31 32 #define TAS2770_MDELAY 0xFFFFFFFE 33 34 static void tas2770_reset(struct tas2770_priv *tas2770) 35 { 36 if (tas2770->reset_gpio) { 37 gpiod_set_value_cansleep(tas2770->reset_gpio, 0); 38 msleep(20); 39 gpiod_set_value_cansleep(tas2770->reset_gpio, 1); 40 usleep_range(1000, 2000); 41 } 42 43 snd_soc_component_write(tas2770->component, TAS2770_SW_RST, 44 TAS2770_RST); 45 usleep_range(1000, 2000); 46 } 47 48 static int tas2770_update_pwr_ctrl(struct tas2770_priv *tas2770) 49 { 50 struct snd_soc_component *component = tas2770->component; 51 unsigned int val; 52 int ret; 53 54 if (tas2770->dac_powered) 55 val = tas2770->unmuted ? 56 TAS2770_PWR_CTRL_ACTIVE : TAS2770_PWR_CTRL_MUTE; 57 else 58 val = TAS2770_PWR_CTRL_SHUTDOWN; 59 60 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 61 TAS2770_PWR_CTRL_MASK, val); 62 if (ret < 0) 63 return ret; 64 65 return 0; 66 } 67 68 #ifdef CONFIG_PM 69 static int tas2770_codec_suspend(struct snd_soc_component *component) 70 { 71 struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component); 72 int ret = 0; 73 74 regcache_cache_only(tas2770->regmap, true); 75 regcache_mark_dirty(tas2770->regmap); 76 77 if (tas2770->sdz_gpio) { 78 gpiod_set_value_cansleep(tas2770->sdz_gpio, 0); 79 } else { 80 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 81 TAS2770_PWR_CTRL_MASK, 82 TAS2770_PWR_CTRL_SHUTDOWN); 83 if (ret < 0) { 84 regcache_cache_only(tas2770->regmap, false); 85 regcache_sync(tas2770->regmap); 86 return ret; 87 } 88 89 ret = 0; 90 } 91 92 return ret; 93 } 94 95 static int tas2770_codec_resume(struct snd_soc_component *component) 96 { 97 struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component); 98 int ret; 99 100 if (tas2770->sdz_gpio) { 101 gpiod_set_value_cansleep(tas2770->sdz_gpio, 1); 102 usleep_range(1000, 2000); 103 } else { 104 ret = tas2770_update_pwr_ctrl(tas2770); 105 if (ret < 0) 106 return ret; 107 } 108 109 regcache_cache_only(tas2770->regmap, false); 110 111 return regcache_sync(tas2770->regmap); 112 } 113 #else 114 #define tas2770_codec_suspend NULL 115 #define tas2770_codec_resume NULL 116 #endif 117 118 static const char * const tas2770_ASI1_src[] = { 119 "I2C offset", "Left", "Right", "LeftRightDiv2", 120 }; 121 122 static SOC_ENUM_SINGLE_DECL( 123 tas2770_ASI1_src_enum, TAS2770_TDM_CFG_REG2, 124 4, tas2770_ASI1_src); 125 126 static const struct snd_kcontrol_new tas2770_asi1_mux = 127 SOC_DAPM_ENUM("ASI1 Source", tas2770_ASI1_src_enum); 128 129 static int tas2770_dac_event(struct snd_soc_dapm_widget *w, 130 struct snd_kcontrol *kcontrol, int event) 131 { 132 struct snd_soc_component *component = 133 snd_soc_dapm_to_component(w->dapm); 134 struct tas2770_priv *tas2770 = 135 snd_soc_component_get_drvdata(component); 136 int ret; 137 138 switch (event) { 139 case SND_SOC_DAPM_POST_PMU: 140 tas2770->dac_powered = 1; 141 ret = tas2770_update_pwr_ctrl(tas2770); 142 break; 143 case SND_SOC_DAPM_PRE_PMD: 144 tas2770->dac_powered = 0; 145 ret = tas2770_update_pwr_ctrl(tas2770); 146 break; 147 default: 148 dev_err(tas2770->dev, "Not supported evevt\n"); 149 return -EINVAL; 150 } 151 152 return ret; 153 } 154 155 static const struct snd_kcontrol_new isense_switch = 156 SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 3, 1, 1); 157 static const struct snd_kcontrol_new vsense_switch = 158 SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 2, 1, 1); 159 160 static int sense_event(struct snd_soc_dapm_widget *w, 161 struct snd_kcontrol *kcontrol, int event) 162 { 163 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); 164 struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component); 165 166 /* 167 * Powering up ISENSE/VSENSE requires a trip through the shutdown state. 168 * Do that here to ensure that our changes are applied properly, otherwise 169 * we might end up with non-functional IVSENSE if playback started earlier, 170 * which would break software speaker protection. 171 */ 172 switch (event) { 173 case SND_SOC_DAPM_PRE_REG: 174 return snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 175 TAS2770_PWR_CTRL_MASK, 176 TAS2770_PWR_CTRL_SHUTDOWN); 177 case SND_SOC_DAPM_POST_REG: 178 return tas2770_update_pwr_ctrl(tas2770); 179 default: 180 return 0; 181 } 182 } 183 184 static const struct snd_soc_dapm_widget tas2770_dapm_widgets[] = { 185 SND_SOC_DAPM_AIF_IN("ASI1", "ASI1 Playback", 0, SND_SOC_NOPM, 0, 0), 186 SND_SOC_DAPM_MUX("ASI1 Sel", SND_SOC_NOPM, 0, 0, &tas2770_asi1_mux), 187 SND_SOC_DAPM_SWITCH_E("ISENSE", TAS2770_PWR_CTRL, 3, 1, &isense_switch, 188 sense_event, SND_SOC_DAPM_PRE_REG | SND_SOC_DAPM_POST_REG), 189 SND_SOC_DAPM_SWITCH_E("VSENSE", TAS2770_PWR_CTRL, 2, 1, &vsense_switch, 190 sense_event, SND_SOC_DAPM_PRE_REG | SND_SOC_DAPM_POST_REG), 191 SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2770_dac_event, 192 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), 193 SND_SOC_DAPM_OUTPUT("OUT"), 194 SND_SOC_DAPM_SIGGEN("VMON"), 195 SND_SOC_DAPM_SIGGEN("IMON") 196 }; 197 198 static const struct snd_soc_dapm_route tas2770_audio_map[] = { 199 {"ASI1 Sel", "I2C offset", "ASI1"}, 200 {"ASI1 Sel", "Left", "ASI1"}, 201 {"ASI1 Sel", "Right", "ASI1"}, 202 {"ASI1 Sel", "LeftRightDiv2", "ASI1"}, 203 {"DAC", NULL, "ASI1 Sel"}, 204 {"OUT", NULL, "DAC"}, 205 {"ISENSE", "Switch", "IMON"}, 206 {"VSENSE", "Switch", "VMON"}, 207 }; 208 209 static int tas2770_mute(struct snd_soc_dai *dai, int mute, int direction) 210 { 211 struct snd_soc_component *component = dai->component; 212 struct tas2770_priv *tas2770 = 213 snd_soc_component_get_drvdata(component); 214 215 tas2770->unmuted = !mute; 216 return tas2770_update_pwr_ctrl(tas2770); 217 } 218 219 static int tas2770_set_ivsense_transmit(struct tas2770_priv *tas2770, 220 int i_slot, int v_slot) 221 { 222 struct snd_soc_component *component = tas2770->component; 223 int ret; 224 225 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG5, 226 TAS2770_TDM_CFG_REG5_VSNS_MASK | 227 TAS2770_TDM_CFG_REG5_50_MASK, 228 TAS2770_TDM_CFG_REG5_VSNS_ENABLE | 229 v_slot); 230 if (ret < 0) 231 return ret; 232 233 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG6, 234 TAS2770_TDM_CFG_REG6_ISNS_MASK | 235 TAS2770_TDM_CFG_REG6_50_MASK, 236 TAS2770_TDM_CFG_REG6_ISNS_ENABLE | 237 i_slot); 238 if (ret < 0) 239 return ret; 240 241 return 0; 242 } 243 244 static int tas2770_set_pdm_transmit(struct tas2770_priv *tas2770, int slot) 245 { 246 struct snd_soc_component *component = tas2770->component; 247 int ret; 248 249 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG7, 250 TAS2770_TDM_CFG_REG7_PDM_MASK | 251 TAS2770_TDM_CFG_REG7_50_MASK, 252 TAS2770_TDM_CFG_REG7_PDM_ENABLE | 253 slot); 254 return ret; 255 } 256 257 static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth) 258 { 259 int ret; 260 struct snd_soc_component *component = tas2770->component; 261 262 switch (bitwidth) { 263 case SNDRV_PCM_FORMAT_S16_LE: 264 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, 265 TAS2770_TDM_CFG_REG2_RXW_MASK, 266 TAS2770_TDM_CFG_REG2_RXW_16BITS); 267 break; 268 case SNDRV_PCM_FORMAT_S24_LE: 269 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, 270 TAS2770_TDM_CFG_REG2_RXW_MASK, 271 TAS2770_TDM_CFG_REG2_RXW_24BITS); 272 break; 273 case SNDRV_PCM_FORMAT_S32_LE: 274 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, 275 TAS2770_TDM_CFG_REG2_RXW_MASK, 276 TAS2770_TDM_CFG_REG2_RXW_32BITS); 277 break; 278 279 default: 280 return -EINVAL; 281 } 282 283 if (ret < 0) 284 return ret; 285 286 return 0; 287 } 288 289 static int tas2770_set_samplerate(struct tas2770_priv *tas2770, int samplerate) 290 { 291 struct snd_soc_component *component = tas2770->component; 292 int ramp_rate_val; 293 int ret; 294 295 switch (samplerate) { 296 case 48000: 297 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ | 298 TAS2770_TDM_CFG_REG0_31_44_1_48KHZ; 299 break; 300 case 44100: 301 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ | 302 TAS2770_TDM_CFG_REG0_31_44_1_48KHZ; 303 break; 304 case 96000: 305 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ | 306 TAS2770_TDM_CFG_REG0_31_88_2_96KHZ; 307 break; 308 case 88200: 309 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ | 310 TAS2770_TDM_CFG_REG0_31_88_2_96KHZ; 311 break; 312 case 192000: 313 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ | 314 TAS2770_TDM_CFG_REG0_31_176_4_192KHZ; 315 break; 316 case 176400: 317 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ | 318 TAS2770_TDM_CFG_REG0_31_176_4_192KHZ; 319 break; 320 default: 321 return -EINVAL; 322 } 323 324 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG0, 325 TAS2770_TDM_CFG_REG0_SMP_MASK | 326 TAS2770_TDM_CFG_REG0_31_MASK, 327 ramp_rate_val); 328 if (ret < 0) 329 return ret; 330 331 return 0; 332 } 333 334 static int tas2770_hw_params(struct snd_pcm_substream *substream, 335 struct snd_pcm_hw_params *params, 336 struct snd_soc_dai *dai) 337 { 338 struct snd_soc_component *component = dai->component; 339 struct tas2770_priv *tas2770 = 340 snd_soc_component_get_drvdata(component); 341 int ret; 342 343 ret = tas2770_set_bitwidth(tas2770, params_format(params)); 344 if (ret) 345 return ret; 346 347 return tas2770_set_samplerate(tas2770, params_rate(params)); 348 } 349 350 static int tas2770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 351 { 352 struct snd_soc_component *component = dai->component; 353 struct tas2770_priv *tas2770 = 354 snd_soc_component_get_drvdata(component); 355 u8 tdm_rx_start_slot = 0, invert_fpol = 0, fpol_preinv = 0, asi_cfg_1 = 0; 356 int ret; 357 358 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { 359 case SND_SOC_DAIFMT_CBC_CFC: 360 break; 361 default: 362 dev_err(tas2770->dev, "ASI invalid DAI clocking\n"); 363 return -EINVAL; 364 } 365 366 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 367 case SND_SOC_DAIFMT_NB_IF: 368 invert_fpol = 1; 369 fallthrough; 370 case SND_SOC_DAIFMT_NB_NF: 371 asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_RSING; 372 break; 373 case SND_SOC_DAIFMT_IB_IF: 374 invert_fpol = 1; 375 fallthrough; 376 case SND_SOC_DAIFMT_IB_NF: 377 asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_FALING; 378 break; 379 default: 380 dev_err(tas2770->dev, "ASI format Inverse is not found\n"); 381 return -EINVAL; 382 } 383 384 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1, 385 TAS2770_TDM_CFG_REG1_RX_MASK, 386 asi_cfg_1); 387 if (ret < 0) 388 return ret; 389 390 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 391 case SND_SOC_DAIFMT_I2S: 392 tdm_rx_start_slot = 1; 393 fpol_preinv = 0; 394 break; 395 case SND_SOC_DAIFMT_DSP_A: 396 tdm_rx_start_slot = 0; 397 fpol_preinv = 1; 398 break; 399 case SND_SOC_DAIFMT_DSP_B: 400 tdm_rx_start_slot = 1; 401 fpol_preinv = 1; 402 break; 403 case SND_SOC_DAIFMT_LEFT_J: 404 tdm_rx_start_slot = 0; 405 fpol_preinv = 1; 406 break; 407 default: 408 dev_err(tas2770->dev, 409 "DAI Format is not found, fmt=0x%x\n", fmt); 410 return -EINVAL; 411 } 412 413 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1, 414 TAS2770_TDM_CFG_REG1_MASK, 415 (tdm_rx_start_slot << TAS2770_TDM_CFG_REG1_51_SHIFT)); 416 if (ret < 0) 417 return ret; 418 419 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG0, 420 TAS2770_TDM_CFG_REG0_FPOL_MASK, 421 (fpol_preinv ^ invert_fpol) 422 ? TAS2770_TDM_CFG_REG0_FPOL_RSING 423 : TAS2770_TDM_CFG_REG0_FPOL_FALING); 424 if (ret < 0) 425 return ret; 426 427 return 0; 428 } 429 430 static int tas2770_set_dai_tdm_slot(struct snd_soc_dai *dai, 431 unsigned int tx_mask, 432 unsigned int rx_mask, 433 int slots, int slot_width) 434 { 435 struct snd_soc_component *component = dai->component; 436 int left_slot, right_slot; 437 int ret; 438 439 if (tx_mask == 0 || rx_mask != 0) 440 return -EINVAL; 441 442 left_slot = __ffs(tx_mask); 443 tx_mask &= ~(1 << left_slot); 444 if (tx_mask == 0) { 445 right_slot = left_slot; 446 } else { 447 right_slot = __ffs(tx_mask); 448 tx_mask &= ~(1 << right_slot); 449 } 450 451 if (tx_mask != 0 || left_slot >= slots || right_slot >= slots) 452 return -EINVAL; 453 454 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3, 455 TAS2770_TDM_CFG_REG3_30_MASK, 456 (left_slot << TAS2770_TDM_CFG_REG3_30_SHIFT)); 457 if (ret < 0) 458 return ret; 459 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3, 460 TAS2770_TDM_CFG_REG3_RXS_MASK, 461 (right_slot << TAS2770_TDM_CFG_REG3_RXS_SHIFT)); 462 if (ret < 0) 463 return ret; 464 465 switch (slot_width) { 466 case 16: 467 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, 468 TAS2770_TDM_CFG_REG2_RXS_MASK, 469 TAS2770_TDM_CFG_REG2_RXS_16BITS); 470 break; 471 case 24: 472 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, 473 TAS2770_TDM_CFG_REG2_RXS_MASK, 474 TAS2770_TDM_CFG_REG2_RXS_24BITS); 475 break; 476 case 32: 477 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, 478 TAS2770_TDM_CFG_REG2_RXS_MASK, 479 TAS2770_TDM_CFG_REG2_RXS_32BITS); 480 break; 481 case 0: 482 /* Do not change slot width */ 483 ret = 0; 484 break; 485 default: 486 ret = -EINVAL; 487 } 488 489 if (ret < 0) 490 return ret; 491 492 return 0; 493 } 494 495 static const struct snd_soc_dai_ops tas2770_dai_ops = { 496 .mute_stream = tas2770_mute, 497 .hw_params = tas2770_hw_params, 498 .set_fmt = tas2770_set_fmt, 499 .set_tdm_slot = tas2770_set_dai_tdm_slot, 500 .no_capture_mute = 1, 501 }; 502 503 #define TAS2770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 504 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 505 506 #define TAS2770_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\ 507 SNDRV_PCM_RATE_96000 |\ 508 SNDRV_PCM_RATE_192000\ 509 ) 510 511 static struct snd_soc_dai_driver tas2770_dai_driver[] = { 512 { 513 .name = "tas2770 ASI1", 514 .id = 0, 515 .playback = { 516 .stream_name = "ASI1 Playback", 517 .channels_min = 1, 518 .channels_max = 2, 519 .rates = TAS2770_RATES, 520 .formats = TAS2770_FORMATS, 521 }, 522 .capture = { 523 .stream_name = "ASI1 Capture", 524 .channels_min = 0, 525 .channels_max = 2, 526 .rates = TAS2770_RATES, 527 .formats = TAS2770_FORMATS, 528 }, 529 .ops = &tas2770_dai_ops, 530 .symmetric_rate = 1, 531 }, 532 }; 533 534 static int tas2770_read_die_temp(struct tas2770_priv *tas2770, long *result) 535 { 536 int ret = 0; 537 int reading, msb, lsb; 538 539 ret = regmap_read(tas2770->regmap, TAS2770_TEMP_MSB, &msb); 540 if (ret) 541 return ret; 542 543 ret = regmap_read(tas2770->regmap, TAS2770_TEMP_LSB, &lsb); 544 if (ret) 545 return ret; 546 547 reading = (msb << 4) | (lsb >> 4); 548 549 /* 550 * As per datasheet: divide register by 16 and subtract 93 to get 551 * degrees Celsius. hwmon requires millidegrees. Let's avoid rounding 552 * errors by subtracting 93 * 16 then multiplying by 1000 / 16. 553 * 554 * NOTE: The ADC registers are initialised to 0 on reset. This means 555 * that the temperature will read -93 *C until the chip is brought out 556 * of software shutdown (e.g. the PCM it's attached to is opened). The 557 * ADC is also shut down in software shutdown/low-power mode, so the 558 * value read back from its registers will be the last value sampled 559 * before entering software shutdown. 560 */ 561 *result = (reading - (93 * 16)) * (1000 / 16); 562 return 0; 563 } 564 565 static umode_t tas2770_hwmon_is_visible(const void *data, 566 enum hwmon_sensor_types type, u32 attr, 567 int channel) 568 { 569 if (type != hwmon_temp) 570 return 0; 571 572 switch (attr) { 573 case hwmon_temp_input: 574 return 0444; 575 default: 576 break; 577 } 578 579 return 0; 580 } 581 582 static int tas2770_hwmon_read(struct device *dev, 583 enum hwmon_sensor_types type, 584 u32 attr, int channel, long *val) 585 { 586 struct tas2770_priv *tas2770 = dev_get_drvdata(dev); 587 int ret; 588 589 switch (attr) { 590 case hwmon_temp_input: 591 ret = tas2770_read_die_temp(tas2770, val); 592 break; 593 default: 594 ret = -EOPNOTSUPP; 595 break; 596 } 597 598 return ret; 599 } 600 601 static const struct hwmon_channel_info *const tas2770_hwmon_info[] = { 602 HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT), 603 NULL 604 }; 605 606 static const struct hwmon_ops tas2770_hwmon_ops = { 607 .is_visible = tas2770_hwmon_is_visible, 608 .read = tas2770_hwmon_read, 609 }; 610 611 static const struct hwmon_chip_info tas2770_hwmon_chip_info = { 612 .ops = &tas2770_hwmon_ops, 613 .info = tas2770_hwmon_info, 614 }; 615 616 static const struct regmap_config tas2770_i2c_regmap; 617 618 static int tas2770_codec_probe(struct snd_soc_component *component) 619 { 620 struct tas2770_priv *tas2770 = 621 snd_soc_component_get_drvdata(component); 622 int ret; 623 624 tas2770->component = component; 625 626 if (tas2770->sdz_gpio) { 627 gpiod_set_value_cansleep(tas2770->sdz_gpio, 1); 628 usleep_range(1000, 2000); 629 } 630 631 tas2770_reset(tas2770); 632 regmap_reinit_cache(tas2770->regmap, &tas2770_i2c_regmap); 633 634 if (tas2770->i_sense_slot != -1 && tas2770->v_sense_slot != -1) { 635 ret = tas2770_set_ivsense_transmit(tas2770, tas2770->i_sense_slot, 636 tas2770->v_sense_slot); 637 638 if (ret < 0) 639 return ret; 640 } 641 642 if (tas2770->pdm_slot != -1) { 643 ret = tas2770_set_pdm_transmit(tas2770, tas2770->pdm_slot); 644 645 if (ret < 0) 646 return ret; 647 } 648 649 return 0; 650 } 651 652 static DECLARE_TLV_DB_SCALE(tas2770_digital_tlv, 1100, 50, 0); 653 static DECLARE_TLV_DB_SCALE(tas2770_playback_volume, -10050, 50, 0); 654 655 static const struct snd_kcontrol_new tas2770_snd_controls[] = { 656 SOC_SINGLE_TLV("Speaker Playback Volume", TAS2770_PLAY_CFG_REG2, 657 0, TAS2770_PLAY_CFG_REG2_VMAX, 1, tas2770_playback_volume), 658 SOC_SINGLE_TLV("Amp Gain Volume", TAS2770_PLAY_CFG_REG0, 0, 0x14, 0, 659 tas2770_digital_tlv), 660 }; 661 662 static const struct snd_soc_component_driver soc_component_driver_tas2770 = { 663 .probe = tas2770_codec_probe, 664 .suspend = tas2770_codec_suspend, 665 .resume = tas2770_codec_resume, 666 .controls = tas2770_snd_controls, 667 .num_controls = ARRAY_SIZE(tas2770_snd_controls), 668 .dapm_widgets = tas2770_dapm_widgets, 669 .num_dapm_widgets = ARRAY_SIZE(tas2770_dapm_widgets), 670 .dapm_routes = tas2770_audio_map, 671 .num_dapm_routes = ARRAY_SIZE(tas2770_audio_map), 672 .idle_bias_on = 1, 673 .endianness = 1, 674 }; 675 676 static int tas2770_register_codec(struct tas2770_priv *tas2770) 677 { 678 return devm_snd_soc_register_component(tas2770->dev, 679 &soc_component_driver_tas2770, 680 tas2770_dai_driver, ARRAY_SIZE(tas2770_dai_driver)); 681 } 682 683 static const struct reg_default tas2770_reg_defaults[] = { 684 { TAS2770_PAGE, 0x00 }, 685 { TAS2770_SW_RST, 0x00 }, 686 { TAS2770_PWR_CTRL, 0x0e }, 687 { TAS2770_PLAY_CFG_REG0, 0x10 }, 688 { TAS2770_PLAY_CFG_REG1, 0x01 }, 689 { TAS2770_PLAY_CFG_REG2, 0x00 }, 690 { TAS2770_MSC_CFG_REG0, 0x07 }, 691 { TAS2770_TDM_CFG_REG1, 0x02 }, 692 { TAS2770_TDM_CFG_REG2, 0x0a }, 693 { TAS2770_TDM_CFG_REG3, 0x10 }, 694 { TAS2770_INT_MASK_REG0, 0xfc }, 695 { TAS2770_INT_MASK_REG1, 0xb1 }, 696 { TAS2770_INT_CFG, 0x05 }, 697 { TAS2770_MISC_IRQ, 0x81 }, 698 { TAS2770_CLK_CGF, 0x0c }, 699 700 }; 701 702 static bool tas2770_volatile(struct device *dev, unsigned int reg) 703 { 704 switch (reg) { 705 case TAS2770_PAGE: /* regmap implementation requires this */ 706 case TAS2770_SW_RST: /* always clears after write */ 707 case TAS2770_BO_PRV_REG0:/* has a self clearing bit */ 708 case TAS2770_LVE_INT_REG0: 709 case TAS2770_LVE_INT_REG1: 710 case TAS2770_LAT_INT_REG0:/* Sticky interrupt flags */ 711 case TAS2770_LAT_INT_REG1:/* Sticky interrupt flags */ 712 case TAS2770_VBAT_MSB: 713 case TAS2770_VBAT_LSB: 714 case TAS2770_TEMP_MSB: 715 case TAS2770_TEMP_LSB: 716 return true; 717 } 718 719 return false; 720 } 721 722 static bool tas2770_writeable(struct device *dev, unsigned int reg) 723 { 724 switch (reg) { 725 case TAS2770_LVE_INT_REG0: 726 case TAS2770_LVE_INT_REG1: 727 case TAS2770_LAT_INT_REG0: 728 case TAS2770_LAT_INT_REG1: 729 case TAS2770_VBAT_MSB: 730 case TAS2770_VBAT_LSB: 731 case TAS2770_TEMP_MSB: 732 case TAS2770_TEMP_LSB: 733 case TAS2770_TDM_CLK_DETC: 734 case TAS2770_REV_AND_GPID: 735 return false; 736 } 737 738 return true; 739 } 740 741 static const struct regmap_range_cfg tas2770_regmap_ranges[] = { 742 { 743 .range_min = 0, 744 .range_max = 1 * 128, 745 .selector_reg = TAS2770_PAGE, 746 .selector_mask = 0xff, 747 .selector_shift = 0, 748 .window_start = 0, 749 .window_len = 128, 750 }, 751 }; 752 753 static const struct regmap_config tas2770_i2c_regmap = { 754 .reg_bits = 8, 755 .val_bits = 8, 756 .writeable_reg = tas2770_writeable, 757 .volatile_reg = tas2770_volatile, 758 .reg_defaults = tas2770_reg_defaults, 759 .num_reg_defaults = ARRAY_SIZE(tas2770_reg_defaults), 760 .cache_type = REGCACHE_RBTREE, 761 .ranges = tas2770_regmap_ranges, 762 .num_ranges = ARRAY_SIZE(tas2770_regmap_ranges), 763 .max_register = 1 * 128, 764 }; 765 766 static int tas2770_parse_dt(struct device *dev, struct tas2770_priv *tas2770) 767 { 768 int rc = 0; 769 770 rc = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no", 771 &tas2770->i_sense_slot); 772 if (rc) { 773 dev_info(tas2770->dev, "Property %s is missing setting default slot\n", 774 "ti,imon-slot-no"); 775 776 tas2770->i_sense_slot = -1; 777 } 778 779 rc = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no", 780 &tas2770->v_sense_slot); 781 if (rc) { 782 dev_info(tas2770->dev, "Property %s is missing setting default slot\n", 783 "ti,vmon-slot-no"); 784 785 tas2770->v_sense_slot = -1; 786 } 787 788 rc = fwnode_property_read_u32(dev->fwnode, "ti,pdm-slot-no", 789 &tas2770->pdm_slot); 790 if (rc) 791 tas2770->pdm_slot = -1; 792 793 tas2770->sdz_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH); 794 if (IS_ERR(tas2770->sdz_gpio)) { 795 if (PTR_ERR(tas2770->sdz_gpio) == -EPROBE_DEFER) 796 return -EPROBE_DEFER; 797 798 tas2770->sdz_gpio = NULL; 799 } 800 801 return 0; 802 } 803 804 static int tas2770_i2c_probe(struct i2c_client *client) 805 { 806 struct tas2770_priv *tas2770; 807 int result; 808 809 tas2770 = devm_kzalloc(&client->dev, sizeof(struct tas2770_priv), 810 GFP_KERNEL); 811 if (!tas2770) 812 return -ENOMEM; 813 814 tas2770->dev = &client->dev; 815 i2c_set_clientdata(client, tas2770); 816 dev_set_drvdata(&client->dev, tas2770); 817 818 tas2770->regmap = devm_regmap_init_i2c(client, &tas2770_i2c_regmap); 819 if (IS_ERR(tas2770->regmap)) { 820 result = PTR_ERR(tas2770->regmap); 821 dev_err(&client->dev, "Failed to allocate register map: %d\n", 822 result); 823 return result; 824 } 825 826 if (client->dev.of_node) { 827 result = tas2770_parse_dt(&client->dev, tas2770); 828 if (result) { 829 dev_err(tas2770->dev, "%s: Failed to parse devicetree\n", 830 __func__); 831 return result; 832 } 833 } 834 835 tas2770->reset_gpio = devm_gpiod_get_optional(tas2770->dev, "reset", 836 GPIOD_OUT_HIGH); 837 if (IS_ERR(tas2770->reset_gpio)) { 838 if (PTR_ERR(tas2770->reset_gpio) == -EPROBE_DEFER) { 839 tas2770->reset_gpio = NULL; 840 return -EPROBE_DEFER; 841 } 842 } 843 844 if (IS_REACHABLE(CONFIG_HWMON)) { 845 struct device *hwmon; 846 847 hwmon = devm_hwmon_device_register_with_info(&client->dev, "tas2770", 848 tas2770, 849 &tas2770_hwmon_chip_info, 850 NULL); 851 if (IS_ERR(hwmon)) { 852 return dev_err_probe(&client->dev, PTR_ERR(hwmon), 853 "Failed to register temp sensor\n"); 854 } 855 } 856 857 result = tas2770_register_codec(tas2770); 858 if (result) 859 dev_err(tas2770->dev, "Register codec failed.\n"); 860 861 return result; 862 } 863 864 static const struct i2c_device_id tas2770_i2c_id[] = { 865 { "tas2770"}, 866 { } 867 }; 868 MODULE_DEVICE_TABLE(i2c, tas2770_i2c_id); 869 870 #if defined(CONFIG_OF) 871 static const struct of_device_id tas2770_of_match[] = { 872 { .compatible = "ti,tas2770" }, 873 {}, 874 }; 875 MODULE_DEVICE_TABLE(of, tas2770_of_match); 876 #endif 877 878 static struct i2c_driver tas2770_i2c_driver = { 879 .driver = { 880 .name = "tas2770", 881 .of_match_table = of_match_ptr(tas2770_of_match), 882 }, 883 .probe = tas2770_i2c_probe, 884 .id_table = tas2770_i2c_id, 885 }; 886 module_i2c_driver(tas2770_i2c_driver); 887 888 MODULE_AUTHOR("Shi Fu <shifu0704@thundersoft.com>"); 889 MODULE_DESCRIPTION("TAS2770 I2C Smart Amplifier driver"); 890 MODULE_LICENSE("GPL v2"); 891