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/pm.h> 16 #include <linux/i2c.h> 17 #include <linux/gpio.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/of_gpio.h> 24 #include <linux/slab.h> 25 #include <sound/soc.h> 26 #include <sound/pcm.h> 27 #include <sound/pcm_params.h> 28 #include <sound/initval.h> 29 #include <sound/tlv.h> 30 31 #include "tas2770.h" 32 33 #define TAS2770_MDELAY 0xFFFFFFFE 34 35 static void tas2770_reset(struct tas2770_priv *tas2770) 36 { 37 if (tas2770->reset_gpio) { 38 gpiod_set_value_cansleep(tas2770->reset_gpio, 0); 39 msleep(20); 40 gpiod_set_value_cansleep(tas2770->reset_gpio, 1); 41 usleep_range(1000, 2000); 42 } 43 44 snd_soc_component_write(tas2770->component, TAS2770_SW_RST, 45 TAS2770_RST); 46 usleep_range(1000, 2000); 47 } 48 49 static int tas2770_set_bias_level(struct snd_soc_component *component, 50 enum snd_soc_bias_level level) 51 { 52 struct tas2770_priv *tas2770 = 53 snd_soc_component_get_drvdata(component); 54 55 switch (level) { 56 case SND_SOC_BIAS_ON: 57 snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 58 TAS2770_PWR_CTRL_MASK, 59 TAS2770_PWR_CTRL_ACTIVE); 60 break; 61 case SND_SOC_BIAS_STANDBY: 62 case SND_SOC_BIAS_PREPARE: 63 snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 64 TAS2770_PWR_CTRL_MASK, 65 TAS2770_PWR_CTRL_MUTE); 66 break; 67 case SND_SOC_BIAS_OFF: 68 snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 69 TAS2770_PWR_CTRL_MASK, 70 TAS2770_PWR_CTRL_SHUTDOWN); 71 break; 72 73 default: 74 dev_err(tas2770->dev, "wrong power level setting %d\n", level); 75 return -EINVAL; 76 } 77 78 return 0; 79 } 80 81 #ifdef CONFIG_PM 82 static int tas2770_codec_suspend(struct snd_soc_component *component) 83 { 84 struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component); 85 int ret = 0; 86 87 regcache_cache_only(tas2770->regmap, true); 88 regcache_mark_dirty(tas2770->regmap); 89 90 if (tas2770->sdz_gpio) { 91 gpiod_set_value_cansleep(tas2770->sdz_gpio, 0); 92 } else { 93 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 94 TAS2770_PWR_CTRL_MASK, 95 TAS2770_PWR_CTRL_SHUTDOWN); 96 if (ret < 0) { 97 regcache_cache_only(tas2770->regmap, false); 98 regcache_sync(tas2770->regmap); 99 return ret; 100 } 101 102 ret = 0; 103 } 104 105 return ret; 106 } 107 108 static int tas2770_codec_resume(struct snd_soc_component *component) 109 { 110 struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component); 111 int ret; 112 113 if (tas2770->sdz_gpio) { 114 gpiod_set_value_cansleep(tas2770->sdz_gpio, 1); 115 usleep_range(1000, 2000); 116 } else { 117 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 118 TAS2770_PWR_CTRL_MASK, 119 TAS2770_PWR_CTRL_ACTIVE); 120 if (ret < 0) 121 return ret; 122 } 123 124 regcache_cache_only(tas2770->regmap, false); 125 126 return regcache_sync(tas2770->regmap); 127 } 128 #else 129 #define tas2770_codec_suspend NULL 130 #define tas2770_codec_resume NULL 131 #endif 132 133 static const char * const tas2770_ASI1_src[] = { 134 "I2C offset", "Left", "Right", "LeftRightDiv2", 135 }; 136 137 static SOC_ENUM_SINGLE_DECL( 138 tas2770_ASI1_src_enum, TAS2770_TDM_CFG_REG2, 139 4, tas2770_ASI1_src); 140 141 static const struct snd_kcontrol_new tas2770_asi1_mux = 142 SOC_DAPM_ENUM("ASI1 Source", tas2770_ASI1_src_enum); 143 144 static int tas2770_dac_event(struct snd_soc_dapm_widget *w, 145 struct snd_kcontrol *kcontrol, int event) 146 { 147 struct snd_soc_component *component = 148 snd_soc_dapm_to_component(w->dapm); 149 struct tas2770_priv *tas2770 = 150 snd_soc_component_get_drvdata(component); 151 int ret; 152 153 switch (event) { 154 case SND_SOC_DAPM_POST_PMU: 155 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 156 TAS2770_PWR_CTRL_MASK, 157 TAS2770_PWR_CTRL_MUTE); 158 break; 159 case SND_SOC_DAPM_PRE_PMD: 160 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 161 TAS2770_PWR_CTRL_MASK, 162 TAS2770_PWR_CTRL_SHUTDOWN); 163 break; 164 default: 165 dev_err(tas2770->dev, "Not supported evevt\n"); 166 return -EINVAL; 167 } 168 169 if (ret < 0) 170 return ret; 171 172 return 0; 173 } 174 175 static const struct snd_kcontrol_new isense_switch = 176 SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 3, 1, 1); 177 static const struct snd_kcontrol_new vsense_switch = 178 SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 2, 1, 1); 179 180 static const struct snd_soc_dapm_widget tas2770_dapm_widgets[] = { 181 SND_SOC_DAPM_AIF_IN("ASI1", "ASI1 Playback", 0, SND_SOC_NOPM, 0, 0), 182 SND_SOC_DAPM_MUX("ASI1 Sel", SND_SOC_NOPM, 0, 0, &tas2770_asi1_mux), 183 SND_SOC_DAPM_SWITCH("ISENSE", TAS2770_PWR_CTRL, 3, 1, &isense_switch), 184 SND_SOC_DAPM_SWITCH("VSENSE", TAS2770_PWR_CTRL, 2, 1, &vsense_switch), 185 SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2770_dac_event, 186 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), 187 SND_SOC_DAPM_OUTPUT("OUT"), 188 SND_SOC_DAPM_SIGGEN("VMON"), 189 SND_SOC_DAPM_SIGGEN("IMON") 190 }; 191 192 static const struct snd_soc_dapm_route tas2770_audio_map[] = { 193 {"ASI1 Sel", "I2C offset", "ASI1"}, 194 {"ASI1 Sel", "Left", "ASI1"}, 195 {"ASI1 Sel", "Right", "ASI1"}, 196 {"ASI1 Sel", "LeftRightDiv2", "ASI1"}, 197 {"DAC", NULL, "ASI1 Sel"}, 198 {"OUT", NULL, "DAC"}, 199 {"ISENSE", "Switch", "IMON"}, 200 {"VSENSE", "Switch", "VMON"}, 201 }; 202 203 static int tas2770_mute(struct snd_soc_dai *dai, int mute, int direction) 204 { 205 struct snd_soc_component *component = dai->component; 206 int ret; 207 208 if (mute) 209 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 210 TAS2770_PWR_CTRL_MASK, 211 TAS2770_PWR_CTRL_MUTE); 212 else 213 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 214 TAS2770_PWR_CTRL_MASK, 215 TAS2770_PWR_CTRL_ACTIVE); 216 217 if (ret < 0) 218 return ret; 219 220 return 0; 221 } 222 223 static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth) 224 { 225 int ret; 226 struct snd_soc_component *component = tas2770->component; 227 228 switch (bitwidth) { 229 case SNDRV_PCM_FORMAT_S16_LE: 230 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, 231 TAS2770_TDM_CFG_REG2_RXW_MASK, 232 TAS2770_TDM_CFG_REG2_RXW_16BITS); 233 tas2770->v_sense_slot = tas2770->i_sense_slot + 2; 234 break; 235 case SNDRV_PCM_FORMAT_S24_LE: 236 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, 237 TAS2770_TDM_CFG_REG2_RXW_MASK, 238 TAS2770_TDM_CFG_REG2_RXW_24BITS); 239 tas2770->v_sense_slot = tas2770->i_sense_slot + 4; 240 break; 241 case SNDRV_PCM_FORMAT_S32_LE: 242 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, 243 TAS2770_TDM_CFG_REG2_RXW_MASK, 244 TAS2770_TDM_CFG_REG2_RXW_32BITS); 245 tas2770->v_sense_slot = tas2770->i_sense_slot + 4; 246 break; 247 248 default: 249 return -EINVAL; 250 } 251 252 if (ret < 0) 253 return ret; 254 255 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG5, 256 TAS2770_TDM_CFG_REG5_VSNS_MASK | 257 TAS2770_TDM_CFG_REG5_50_MASK, 258 TAS2770_TDM_CFG_REG5_VSNS_ENABLE | 259 tas2770->v_sense_slot); 260 if (ret < 0) 261 return ret; 262 263 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG6, 264 TAS2770_TDM_CFG_REG6_ISNS_MASK | 265 TAS2770_TDM_CFG_REG6_50_MASK, 266 TAS2770_TDM_CFG_REG6_ISNS_ENABLE | 267 tas2770->i_sense_slot); 268 if (ret < 0) 269 return ret; 270 271 return 0; 272 } 273 274 static int tas2770_set_samplerate(struct tas2770_priv *tas2770, int samplerate) 275 { 276 struct snd_soc_component *component = tas2770->component; 277 int ramp_rate_val; 278 int ret; 279 280 switch (samplerate) { 281 case 48000: 282 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ | 283 TAS2770_TDM_CFG_REG0_31_44_1_48KHZ; 284 break; 285 case 44100: 286 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ | 287 TAS2770_TDM_CFG_REG0_31_44_1_48KHZ; 288 break; 289 case 96000: 290 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ | 291 TAS2770_TDM_CFG_REG0_31_88_2_96KHZ; 292 break; 293 case 88200: 294 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ | 295 TAS2770_TDM_CFG_REG0_31_88_2_96KHZ; 296 break; 297 case 192000: 298 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ | 299 TAS2770_TDM_CFG_REG0_31_176_4_192KHZ; 300 break; 301 case 176400: 302 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ | 303 TAS2770_TDM_CFG_REG0_31_176_4_192KHZ; 304 break; 305 default: 306 return -EINVAL; 307 } 308 309 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG0, 310 TAS2770_TDM_CFG_REG0_SMP_MASK | 311 TAS2770_TDM_CFG_REG0_31_MASK, 312 ramp_rate_val); 313 if (ret < 0) 314 return ret; 315 316 return 0; 317 } 318 319 static int tas2770_hw_params(struct snd_pcm_substream *substream, 320 struct snd_pcm_hw_params *params, 321 struct snd_soc_dai *dai) 322 { 323 struct snd_soc_component *component = dai->component; 324 struct tas2770_priv *tas2770 = 325 snd_soc_component_get_drvdata(component); 326 int ret; 327 328 ret = tas2770_set_bitwidth(tas2770, params_format(params)); 329 if (ret) 330 return ret; 331 332 return tas2770_set_samplerate(tas2770, params_rate(params)); 333 } 334 335 static int tas2770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 336 { 337 struct snd_soc_component *component = dai->component; 338 struct tas2770_priv *tas2770 = 339 snd_soc_component_get_drvdata(component); 340 u8 tdm_rx_start_slot = 0, asi_cfg_1 = 0; 341 int ret; 342 343 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { 344 case SND_SOC_DAIFMT_CBC_CFC: 345 break; 346 default: 347 dev_err(tas2770->dev, "ASI invalid DAI clocking\n"); 348 return -EINVAL; 349 } 350 351 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 352 case SND_SOC_DAIFMT_NB_NF: 353 asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_RSING; 354 break; 355 case SND_SOC_DAIFMT_IB_NF: 356 asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_FALING; 357 break; 358 default: 359 dev_err(tas2770->dev, "ASI format Inverse is not found\n"); 360 return -EINVAL; 361 } 362 363 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1, 364 TAS2770_TDM_CFG_REG1_RX_MASK, 365 asi_cfg_1); 366 if (ret < 0) 367 return ret; 368 369 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 370 case SND_SOC_DAIFMT_I2S: 371 tdm_rx_start_slot = 1; 372 break; 373 case SND_SOC_DAIFMT_DSP_A: 374 tdm_rx_start_slot = 0; 375 break; 376 case SND_SOC_DAIFMT_DSP_B: 377 tdm_rx_start_slot = 1; 378 break; 379 case SND_SOC_DAIFMT_LEFT_J: 380 tdm_rx_start_slot = 0; 381 break; 382 default: 383 dev_err(tas2770->dev, 384 "DAI Format is not found, fmt=0x%x\n", fmt); 385 return -EINVAL; 386 } 387 388 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1, 389 TAS2770_TDM_CFG_REG1_MASK, 390 (tdm_rx_start_slot << TAS2770_TDM_CFG_REG1_51_SHIFT)); 391 if (ret < 0) 392 return ret; 393 394 return 0; 395 } 396 397 static int tas2770_set_dai_tdm_slot(struct snd_soc_dai *dai, 398 unsigned int tx_mask, 399 unsigned int rx_mask, 400 int slots, int slot_width) 401 { 402 struct snd_soc_component *component = dai->component; 403 int left_slot, right_slot; 404 int ret; 405 406 if (tx_mask == 0 || rx_mask != 0) 407 return -EINVAL; 408 409 if (slots == 1) { 410 if (tx_mask != 1) 411 return -EINVAL; 412 413 left_slot = 0; 414 right_slot = 0; 415 } else { 416 left_slot = __ffs(tx_mask); 417 tx_mask &= ~(1 << left_slot); 418 if (tx_mask == 0) { 419 right_slot = left_slot; 420 } else { 421 right_slot = __ffs(tx_mask); 422 tx_mask &= ~(1 << right_slot); 423 } 424 } 425 426 if (tx_mask != 0 || left_slot >= slots || right_slot >= slots) 427 return -EINVAL; 428 429 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3, 430 TAS2770_TDM_CFG_REG3_30_MASK, 431 (left_slot << TAS2770_TDM_CFG_REG3_30_SHIFT)); 432 if (ret < 0) 433 return ret; 434 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3, 435 TAS2770_TDM_CFG_REG3_RXS_MASK, 436 (right_slot << TAS2770_TDM_CFG_REG3_RXS_SHIFT)); 437 if (ret < 0) 438 return ret; 439 440 switch (slot_width) { 441 case 16: 442 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, 443 TAS2770_TDM_CFG_REG2_RXS_MASK, 444 TAS2770_TDM_CFG_REG2_RXS_16BITS); 445 break; 446 case 24: 447 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, 448 TAS2770_TDM_CFG_REG2_RXS_MASK, 449 TAS2770_TDM_CFG_REG2_RXS_24BITS); 450 break; 451 case 32: 452 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, 453 TAS2770_TDM_CFG_REG2_RXS_MASK, 454 TAS2770_TDM_CFG_REG2_RXS_32BITS); 455 break; 456 case 0: 457 /* Do not change slot width */ 458 ret = 0; 459 break; 460 default: 461 ret = -EINVAL; 462 } 463 464 if (ret < 0) 465 return ret; 466 467 return 0; 468 } 469 470 static const struct snd_soc_dai_ops tas2770_dai_ops = { 471 .mute_stream = tas2770_mute, 472 .hw_params = tas2770_hw_params, 473 .set_fmt = tas2770_set_fmt, 474 .set_tdm_slot = tas2770_set_dai_tdm_slot, 475 .no_capture_mute = 1, 476 }; 477 478 #define TAS2770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 479 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 480 481 #define TAS2770_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\ 482 SNDRV_PCM_RATE_96000 |\ 483 SNDRV_PCM_RATE_192000\ 484 ) 485 486 static struct snd_soc_dai_driver tas2770_dai_driver[] = { 487 { 488 .name = "tas2770 ASI1", 489 .id = 0, 490 .playback = { 491 .stream_name = "ASI1 Playback", 492 .channels_min = 2, 493 .channels_max = 2, 494 .rates = TAS2770_RATES, 495 .formats = TAS2770_FORMATS, 496 }, 497 .capture = { 498 .stream_name = "ASI1 Capture", 499 .channels_min = 0, 500 .channels_max = 2, 501 .rates = TAS2770_RATES, 502 .formats = TAS2770_FORMATS, 503 }, 504 .ops = &tas2770_dai_ops, 505 .symmetric_rate = 1, 506 }, 507 }; 508 509 static int tas2770_codec_probe(struct snd_soc_component *component) 510 { 511 struct tas2770_priv *tas2770 = 512 snd_soc_component_get_drvdata(component); 513 514 tas2770->component = component; 515 516 if (tas2770->sdz_gpio) { 517 gpiod_set_value_cansleep(tas2770->sdz_gpio, 1); 518 usleep_range(1000, 2000); 519 } 520 521 tas2770_reset(tas2770); 522 523 return 0; 524 } 525 526 static DECLARE_TLV_DB_SCALE(tas2770_digital_tlv, 1100, 50, 0); 527 static DECLARE_TLV_DB_SCALE(tas2770_playback_volume, -12750, 50, 0); 528 529 static const struct snd_kcontrol_new tas2770_snd_controls[] = { 530 SOC_SINGLE_TLV("Speaker Playback Volume", TAS2770_PLAY_CFG_REG2, 531 0, TAS2770_PLAY_CFG_REG2_VMAX, 1, tas2770_playback_volume), 532 SOC_SINGLE_TLV("Amp Gain Volume", TAS2770_PLAY_CFG_REG0, 0, 0x14, 0, 533 tas2770_digital_tlv), 534 }; 535 536 static const struct snd_soc_component_driver soc_component_driver_tas2770 = { 537 .probe = tas2770_codec_probe, 538 .suspend = tas2770_codec_suspend, 539 .resume = tas2770_codec_resume, 540 .set_bias_level = tas2770_set_bias_level, 541 .controls = tas2770_snd_controls, 542 .num_controls = ARRAY_SIZE(tas2770_snd_controls), 543 .dapm_widgets = tas2770_dapm_widgets, 544 .num_dapm_widgets = ARRAY_SIZE(tas2770_dapm_widgets), 545 .dapm_routes = tas2770_audio_map, 546 .num_dapm_routes = ARRAY_SIZE(tas2770_audio_map), 547 .idle_bias_on = 1, 548 .endianness = 1, 549 }; 550 551 static int tas2770_register_codec(struct tas2770_priv *tas2770) 552 { 553 return devm_snd_soc_register_component(tas2770->dev, 554 &soc_component_driver_tas2770, 555 tas2770_dai_driver, ARRAY_SIZE(tas2770_dai_driver)); 556 } 557 558 static const struct reg_default tas2770_reg_defaults[] = { 559 { TAS2770_PAGE, 0x00 }, 560 { TAS2770_SW_RST, 0x00 }, 561 { TAS2770_PWR_CTRL, 0x0e }, 562 { TAS2770_PLAY_CFG_REG0, 0x10 }, 563 { TAS2770_PLAY_CFG_REG1, 0x01 }, 564 { TAS2770_PLAY_CFG_REG2, 0x00 }, 565 { TAS2770_MSC_CFG_REG0, 0x07 }, 566 { TAS2770_TDM_CFG_REG1, 0x02 }, 567 { TAS2770_TDM_CFG_REG2, 0x0a }, 568 { TAS2770_TDM_CFG_REG3, 0x10 }, 569 { TAS2770_INT_MASK_REG0, 0xfc }, 570 { TAS2770_INT_MASK_REG1, 0xb1 }, 571 { TAS2770_INT_CFG, 0x05 }, 572 { TAS2770_MISC_IRQ, 0x81 }, 573 { TAS2770_CLK_CGF, 0x0c }, 574 575 }; 576 577 static bool tas2770_volatile(struct device *dev, unsigned int reg) 578 { 579 switch (reg) { 580 case TAS2770_PAGE: /* regmap implementation requires this */ 581 case TAS2770_SW_RST: /* always clears after write */ 582 case TAS2770_BO_PRV_REG0:/* has a self clearing bit */ 583 case TAS2770_LVE_INT_REG0: 584 case TAS2770_LVE_INT_REG1: 585 case TAS2770_LAT_INT_REG0:/* Sticky interrupt flags */ 586 case TAS2770_LAT_INT_REG1:/* Sticky interrupt flags */ 587 case TAS2770_VBAT_MSB: 588 case TAS2770_VBAT_LSB: 589 case TAS2770_TEMP_MSB: 590 case TAS2770_TEMP_LSB: 591 return true; 592 } 593 594 return false; 595 } 596 597 static bool tas2770_writeable(struct device *dev, unsigned int reg) 598 { 599 switch (reg) { 600 case TAS2770_LVE_INT_REG0: 601 case TAS2770_LVE_INT_REG1: 602 case TAS2770_LAT_INT_REG0: 603 case TAS2770_LAT_INT_REG1: 604 case TAS2770_VBAT_MSB: 605 case TAS2770_VBAT_LSB: 606 case TAS2770_TEMP_MSB: 607 case TAS2770_TEMP_LSB: 608 case TAS2770_TDM_CLK_DETC: 609 case TAS2770_REV_AND_GPID: 610 return false; 611 } 612 613 return true; 614 } 615 616 static const struct regmap_range_cfg tas2770_regmap_ranges[] = { 617 { 618 .range_min = 0, 619 .range_max = 1 * 128, 620 .selector_reg = TAS2770_PAGE, 621 .selector_mask = 0xff, 622 .selector_shift = 0, 623 .window_start = 0, 624 .window_len = 128, 625 }, 626 }; 627 628 static const struct regmap_config tas2770_i2c_regmap = { 629 .reg_bits = 8, 630 .val_bits = 8, 631 .writeable_reg = tas2770_writeable, 632 .volatile_reg = tas2770_volatile, 633 .reg_defaults = tas2770_reg_defaults, 634 .num_reg_defaults = ARRAY_SIZE(tas2770_reg_defaults), 635 .cache_type = REGCACHE_RBTREE, 636 .ranges = tas2770_regmap_ranges, 637 .num_ranges = ARRAY_SIZE(tas2770_regmap_ranges), 638 .max_register = 1 * 128, 639 }; 640 641 static int tas2770_parse_dt(struct device *dev, struct tas2770_priv *tas2770) 642 { 643 int rc = 0; 644 645 rc = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no", 646 &tas2770->i_sense_slot); 647 if (rc) { 648 dev_info(tas2770->dev, "Property %s is missing setting default slot\n", 649 "ti,imon-slot-no"); 650 651 tas2770->i_sense_slot = 0; 652 } 653 654 rc = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no", 655 &tas2770->v_sense_slot); 656 if (rc) { 657 dev_info(tas2770->dev, "Property %s is missing setting default slot\n", 658 "ti,vmon-slot-no"); 659 660 tas2770->v_sense_slot = 2; 661 } 662 663 tas2770->sdz_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH); 664 if (IS_ERR(tas2770->sdz_gpio)) { 665 if (PTR_ERR(tas2770->sdz_gpio) == -EPROBE_DEFER) 666 return -EPROBE_DEFER; 667 668 tas2770->sdz_gpio = NULL; 669 } 670 671 return 0; 672 } 673 674 static int tas2770_i2c_probe(struct i2c_client *client) 675 { 676 struct tas2770_priv *tas2770; 677 int result; 678 679 tas2770 = devm_kzalloc(&client->dev, sizeof(struct tas2770_priv), 680 GFP_KERNEL); 681 if (!tas2770) 682 return -ENOMEM; 683 684 tas2770->dev = &client->dev; 685 i2c_set_clientdata(client, tas2770); 686 dev_set_drvdata(&client->dev, tas2770); 687 688 tas2770->regmap = devm_regmap_init_i2c(client, &tas2770_i2c_regmap); 689 if (IS_ERR(tas2770->regmap)) { 690 result = PTR_ERR(tas2770->regmap); 691 dev_err(&client->dev, "Failed to allocate register map: %d\n", 692 result); 693 return result; 694 } 695 696 if (client->dev.of_node) { 697 result = tas2770_parse_dt(&client->dev, tas2770); 698 if (result) { 699 dev_err(tas2770->dev, "%s: Failed to parse devicetree\n", 700 __func__); 701 return result; 702 } 703 } 704 705 tas2770->reset_gpio = devm_gpiod_get_optional(tas2770->dev, "reset", 706 GPIOD_OUT_HIGH); 707 if (IS_ERR(tas2770->reset_gpio)) { 708 if (PTR_ERR(tas2770->reset_gpio) == -EPROBE_DEFER) { 709 tas2770->reset_gpio = NULL; 710 return -EPROBE_DEFER; 711 } 712 } 713 714 result = tas2770_register_codec(tas2770); 715 if (result) 716 dev_err(tas2770->dev, "Register codec failed.\n"); 717 718 return result; 719 } 720 721 static const struct i2c_device_id tas2770_i2c_id[] = { 722 { "tas2770", 0}, 723 { } 724 }; 725 MODULE_DEVICE_TABLE(i2c, tas2770_i2c_id); 726 727 #if defined(CONFIG_OF) 728 static const struct of_device_id tas2770_of_match[] = { 729 { .compatible = "ti,tas2770" }, 730 {}, 731 }; 732 MODULE_DEVICE_TABLE(of, tas2770_of_match); 733 #endif 734 735 static struct i2c_driver tas2770_i2c_driver = { 736 .driver = { 737 .name = "tas2770", 738 .of_match_table = of_match_ptr(tas2770_of_match), 739 }, 740 .probe_new = tas2770_i2c_probe, 741 .id_table = tas2770_i2c_id, 742 }; 743 module_i2c_driver(tas2770_i2c_driver); 744 745 MODULE_AUTHOR("Shi Fu <shifu0704@thundersoft.com>"); 746 MODULE_DESCRIPTION("TAS2770 I2C Smart Amplifier driver"); 747 MODULE_LICENSE("GPL v2"); 748