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 } 42 43 snd_soc_component_write(tas2770->component, TAS2770_SW_RST, 44 TAS2770_RST); 45 } 46 47 static int tas2770_set_bias_level(struct snd_soc_component *component, 48 enum snd_soc_bias_level level) 49 { 50 struct tas2770_priv *tas2770 = 51 snd_soc_component_get_drvdata(component); 52 53 switch (level) { 54 case SND_SOC_BIAS_ON: 55 snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 56 TAS2770_PWR_CTRL_MASK, 57 TAS2770_PWR_CTRL_ACTIVE); 58 break; 59 case SND_SOC_BIAS_STANDBY: 60 case SND_SOC_BIAS_PREPARE: 61 snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 62 TAS2770_PWR_CTRL_MASK, 63 TAS2770_PWR_CTRL_MUTE); 64 break; 65 case SND_SOC_BIAS_OFF: 66 snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 67 TAS2770_PWR_CTRL_MASK, 68 TAS2770_PWR_CTRL_SHUTDOWN); 69 break; 70 71 default: 72 dev_err(tas2770->dev, "wrong power level setting %d\n", level); 73 return -EINVAL; 74 } 75 76 return 0; 77 } 78 79 #ifdef CONFIG_PM 80 static int tas2770_codec_suspend(struct snd_soc_component *component) 81 { 82 struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component); 83 int ret = 0; 84 85 regcache_cache_only(tas2770->regmap, true); 86 regcache_mark_dirty(tas2770->regmap); 87 88 if (tas2770->sdz_gpio) { 89 gpiod_set_value_cansleep(tas2770->sdz_gpio, 0); 90 } else { 91 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 92 TAS2770_PWR_CTRL_MASK, 93 TAS2770_PWR_CTRL_SHUTDOWN); 94 if (ret < 0) { 95 regcache_cache_only(tas2770->regmap, false); 96 regcache_sync(tas2770->regmap); 97 return ret; 98 } 99 100 ret = 0; 101 } 102 103 return ret; 104 } 105 106 static int tas2770_codec_resume(struct snd_soc_component *component) 107 { 108 struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component); 109 int ret = 0; 110 111 if (tas2770->sdz_gpio) { 112 gpiod_set_value_cansleep(tas2770->sdz_gpio, 1); 113 } else { 114 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 115 TAS2770_PWR_CTRL_MASK, 116 TAS2770_PWR_CTRL_ACTIVE); 117 if (ret < 0) 118 return ret; 119 } 120 121 regcache_cache_only(tas2770->regmap, false); 122 123 return regcache_sync(tas2770->regmap); 124 } 125 #else 126 #define tas2770_codec_suspend NULL 127 #define tas2770_codec_resume NULL 128 #endif 129 130 static const char * const tas2770_ASI1_src[] = { 131 "I2C offset", "Left", "Right", "LeftRightDiv2", 132 }; 133 134 static SOC_ENUM_SINGLE_DECL( 135 tas2770_ASI1_src_enum, TAS2770_TDM_CFG_REG2, 136 4, tas2770_ASI1_src); 137 138 static const struct snd_kcontrol_new tas2770_asi1_mux = 139 SOC_DAPM_ENUM("ASI1 Source", tas2770_ASI1_src_enum); 140 141 static int tas2770_dac_event(struct snd_soc_dapm_widget *w, 142 struct snd_kcontrol *kcontrol, int event) 143 { 144 struct snd_soc_component *component = 145 snd_soc_dapm_to_component(w->dapm); 146 struct tas2770_priv *tas2770 = 147 snd_soc_component_get_drvdata(component); 148 int ret; 149 150 switch (event) { 151 case SND_SOC_DAPM_POST_PMU: 152 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 153 TAS2770_PWR_CTRL_MASK, 154 TAS2770_PWR_CTRL_MUTE); 155 break; 156 case SND_SOC_DAPM_PRE_PMD: 157 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 158 TAS2770_PWR_CTRL_MASK, 159 TAS2770_PWR_CTRL_SHUTDOWN); 160 break; 161 default: 162 dev_err(tas2770->dev, "Not supported evevt\n"); 163 return -EINVAL; 164 } 165 166 if (ret < 0) 167 return ret; 168 169 return 0; 170 } 171 172 static const struct snd_kcontrol_new isense_switch = 173 SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 3, 1, 1); 174 static const struct snd_kcontrol_new vsense_switch = 175 SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 2, 1, 1); 176 177 static const struct snd_soc_dapm_widget tas2770_dapm_widgets[] = { 178 SND_SOC_DAPM_AIF_IN("ASI1", "ASI1 Playback", 0, SND_SOC_NOPM, 0, 0), 179 SND_SOC_DAPM_MUX("ASI1 Sel", SND_SOC_NOPM, 0, 0, &tas2770_asi1_mux), 180 SND_SOC_DAPM_SWITCH("ISENSE", TAS2770_PWR_CTRL, 3, 1, &isense_switch), 181 SND_SOC_DAPM_SWITCH("VSENSE", TAS2770_PWR_CTRL, 2, 1, &vsense_switch), 182 SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2770_dac_event, 183 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), 184 SND_SOC_DAPM_OUTPUT("OUT"), 185 SND_SOC_DAPM_SIGGEN("VMON"), 186 SND_SOC_DAPM_SIGGEN("IMON") 187 }; 188 189 static const struct snd_soc_dapm_route tas2770_audio_map[] = { 190 {"ASI1 Sel", "I2C offset", "ASI1"}, 191 {"ASI1 Sel", "Left", "ASI1"}, 192 {"ASI1 Sel", "Right", "ASI1"}, 193 {"ASI1 Sel", "LeftRightDiv2", "ASI1"}, 194 {"DAC", NULL, "ASI1 Sel"}, 195 {"OUT", NULL, "DAC"}, 196 {"ISENSE", "Switch", "IMON"}, 197 {"VSENSE", "Switch", "VMON"}, 198 }; 199 200 static int tas2770_mute(struct snd_soc_dai *dai, int mute, int direction) 201 { 202 struct snd_soc_component *component = dai->component; 203 int ret; 204 205 if (mute) 206 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 207 TAS2770_PWR_CTRL_MASK, 208 TAS2770_PWR_CTRL_MUTE); 209 else 210 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, 211 TAS2770_PWR_CTRL_MASK, 212 TAS2770_PWR_CTRL_ACTIVE); 213 214 if (ret < 0) 215 return ret; 216 217 return 0; 218 } 219 220 static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth) 221 { 222 int ret; 223 struct snd_soc_component *component = tas2770->component; 224 225 switch (bitwidth) { 226 case SNDRV_PCM_FORMAT_S16_LE: 227 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, 228 TAS2770_TDM_CFG_REG2_RXW_MASK, 229 TAS2770_TDM_CFG_REG2_RXW_16BITS); 230 tas2770->v_sense_slot = tas2770->i_sense_slot + 2; 231 break; 232 case SNDRV_PCM_FORMAT_S24_LE: 233 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, 234 TAS2770_TDM_CFG_REG2_RXW_MASK, 235 TAS2770_TDM_CFG_REG2_RXW_24BITS); 236 tas2770->v_sense_slot = tas2770->i_sense_slot + 4; 237 break; 238 case SNDRV_PCM_FORMAT_S32_LE: 239 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, 240 TAS2770_TDM_CFG_REG2_RXW_MASK, 241 TAS2770_TDM_CFG_REG2_RXW_32BITS); 242 tas2770->v_sense_slot = tas2770->i_sense_slot + 4; 243 break; 244 245 default: 246 return -EINVAL; 247 } 248 249 if (ret < 0) 250 return ret; 251 252 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG5, 253 TAS2770_TDM_CFG_REG5_VSNS_MASK | 254 TAS2770_TDM_CFG_REG5_50_MASK, 255 TAS2770_TDM_CFG_REG5_VSNS_ENABLE | 256 tas2770->v_sense_slot); 257 if (ret < 0) 258 return ret; 259 260 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG6, 261 TAS2770_TDM_CFG_REG6_ISNS_MASK | 262 TAS2770_TDM_CFG_REG6_50_MASK, 263 TAS2770_TDM_CFG_REG6_ISNS_ENABLE | 264 tas2770->i_sense_slot); 265 if (ret < 0) 266 return ret; 267 268 return 0; 269 } 270 271 static int tas2770_set_samplerate(struct tas2770_priv *tas2770, int samplerate) 272 { 273 struct snd_soc_component *component = tas2770->component; 274 int ramp_rate_val; 275 int ret; 276 277 switch (samplerate) { 278 case 48000: 279 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ | 280 TAS2770_TDM_CFG_REG0_31_44_1_48KHZ; 281 break; 282 case 44100: 283 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ | 284 TAS2770_TDM_CFG_REG0_31_44_1_48KHZ; 285 break; 286 case 96000: 287 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ | 288 TAS2770_TDM_CFG_REG0_31_88_2_96KHZ; 289 break; 290 case 88200: 291 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ | 292 TAS2770_TDM_CFG_REG0_31_88_2_96KHZ; 293 break; 294 case 19200: 295 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ | 296 TAS2770_TDM_CFG_REG0_31_176_4_192KHZ; 297 break; 298 case 17640: 299 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ | 300 TAS2770_TDM_CFG_REG0_31_176_4_192KHZ; 301 break; 302 default: 303 return -EINVAL; 304 } 305 306 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG0, 307 TAS2770_TDM_CFG_REG0_SMP_MASK | 308 TAS2770_TDM_CFG_REG0_31_MASK, 309 ramp_rate_val); 310 if (ret < 0) 311 return ret; 312 313 return 0; 314 } 315 316 static int tas2770_hw_params(struct snd_pcm_substream *substream, 317 struct snd_pcm_hw_params *params, 318 struct snd_soc_dai *dai) 319 { 320 struct snd_soc_component *component = dai->component; 321 struct tas2770_priv *tas2770 = 322 snd_soc_component_get_drvdata(component); 323 int ret; 324 325 ret = tas2770_set_bitwidth(tas2770, params_format(params)); 326 if (ret) 327 return ret; 328 329 return tas2770_set_samplerate(tas2770, params_rate(params)); 330 } 331 332 static int tas2770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 333 { 334 struct snd_soc_component *component = dai->component; 335 struct tas2770_priv *tas2770 = 336 snd_soc_component_get_drvdata(component); 337 u8 tdm_rx_start_slot = 0, asi_cfg_1 = 0; 338 int ret; 339 340 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 341 case SND_SOC_DAIFMT_CBS_CFS: 342 break; 343 default: 344 dev_err(tas2770->dev, "ASI format master is not found\n"); 345 return -EINVAL; 346 } 347 348 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 349 case SND_SOC_DAIFMT_NB_NF: 350 asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_RSING; 351 break; 352 case SND_SOC_DAIFMT_IB_NF: 353 asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_FALING; 354 break; 355 default: 356 dev_err(tas2770->dev, "ASI format Inverse is not found\n"); 357 return -EINVAL; 358 } 359 360 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1, 361 TAS2770_TDM_CFG_REG1_RX_MASK, 362 asi_cfg_1); 363 if (ret < 0) 364 return ret; 365 366 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 367 case SND_SOC_DAIFMT_I2S: 368 tdm_rx_start_slot = 1; 369 break; 370 case SND_SOC_DAIFMT_DSP_A: 371 tdm_rx_start_slot = 0; 372 break; 373 case SND_SOC_DAIFMT_DSP_B: 374 tdm_rx_start_slot = 1; 375 break; 376 case SND_SOC_DAIFMT_LEFT_J: 377 tdm_rx_start_slot = 0; 378 break; 379 default: 380 dev_err(tas2770->dev, 381 "DAI Format is not found, fmt=0x%x\n", fmt); 382 return -EINVAL; 383 } 384 385 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1, 386 TAS2770_TDM_CFG_REG1_MASK, 387 (tdm_rx_start_slot << TAS2770_TDM_CFG_REG1_51_SHIFT)); 388 if (ret < 0) 389 return ret; 390 391 return 0; 392 } 393 394 static int tas2770_set_dai_tdm_slot(struct snd_soc_dai *dai, 395 unsigned int tx_mask, 396 unsigned int rx_mask, 397 int slots, int slot_width) 398 { 399 struct snd_soc_component *component = dai->component; 400 int left_slot, right_slot; 401 int ret; 402 403 if (tx_mask == 0 || rx_mask != 0) 404 return -EINVAL; 405 406 if (slots == 1) { 407 if (tx_mask != 1) 408 return -EINVAL; 409 410 left_slot = 0; 411 right_slot = 0; 412 } else { 413 left_slot = __ffs(tx_mask); 414 tx_mask &= ~(1 << left_slot); 415 if (tx_mask == 0) { 416 right_slot = left_slot; 417 } else { 418 right_slot = __ffs(tx_mask); 419 tx_mask &= ~(1 << right_slot); 420 } 421 } 422 423 if (tx_mask != 0 || left_slot >= slots || right_slot >= slots) 424 return -EINVAL; 425 426 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3, 427 TAS2770_TDM_CFG_REG3_30_MASK, 428 (left_slot << TAS2770_TDM_CFG_REG3_30_SHIFT)); 429 if (ret < 0) 430 return ret; 431 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3, 432 TAS2770_TDM_CFG_REG3_RXS_MASK, 433 (right_slot << TAS2770_TDM_CFG_REG3_RXS_SHIFT)); 434 if (ret < 0) 435 return ret; 436 437 switch (slot_width) { 438 case 16: 439 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, 440 TAS2770_TDM_CFG_REG2_RXS_MASK, 441 TAS2770_TDM_CFG_REG2_RXS_16BITS); 442 break; 443 case 24: 444 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, 445 TAS2770_TDM_CFG_REG2_RXS_MASK, 446 TAS2770_TDM_CFG_REG2_RXS_24BITS); 447 break; 448 case 32: 449 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, 450 TAS2770_TDM_CFG_REG2_RXS_MASK, 451 TAS2770_TDM_CFG_REG2_RXS_32BITS); 452 break; 453 case 0: 454 /* Do not change slot width */ 455 ret = 0; 456 break; 457 default: 458 ret = -EINVAL; 459 } 460 461 if (ret < 0) 462 return ret; 463 464 return 0; 465 } 466 467 static struct snd_soc_dai_ops tas2770_dai_ops = { 468 .mute_stream = tas2770_mute, 469 .hw_params = tas2770_hw_params, 470 .set_fmt = tas2770_set_fmt, 471 .set_tdm_slot = tas2770_set_dai_tdm_slot, 472 .no_capture_mute = 1, 473 }; 474 475 #define TAS2770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 476 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 477 478 #define TAS2770_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\ 479 SNDRV_PCM_RATE_96000 |\ 480 SNDRV_PCM_RATE_192000\ 481 ) 482 483 static struct snd_soc_dai_driver tas2770_dai_driver[] = { 484 { 485 .name = "tas2770 ASI1", 486 .id = 0, 487 .playback = { 488 .stream_name = "ASI1 Playback", 489 .channels_min = 2, 490 .channels_max = 2, 491 .rates = TAS2770_RATES, 492 .formats = TAS2770_FORMATS, 493 }, 494 .capture = { 495 .stream_name = "ASI1 Capture", 496 .channels_min = 0, 497 .channels_max = 2, 498 .rates = TAS2770_RATES, 499 .formats = TAS2770_FORMATS, 500 }, 501 .ops = &tas2770_dai_ops, 502 .symmetric_rate = 1, 503 }, 504 }; 505 506 static int tas2770_codec_probe(struct snd_soc_component *component) 507 { 508 struct tas2770_priv *tas2770 = 509 snd_soc_component_get_drvdata(component); 510 511 tas2770->component = component; 512 513 if (tas2770->sdz_gpio) 514 gpiod_set_value_cansleep(tas2770->sdz_gpio, 1); 515 516 tas2770_reset(tas2770); 517 518 return 0; 519 } 520 521 static DECLARE_TLV_DB_SCALE(tas2770_digital_tlv, 1100, 50, 0); 522 static DECLARE_TLV_DB_SCALE(tas2770_playback_volume, -12750, 50, 0); 523 524 static const struct snd_kcontrol_new tas2770_snd_controls[] = { 525 SOC_SINGLE_TLV("Speaker Playback Volume", TAS2770_PLAY_CFG_REG2, 526 0, TAS2770_PLAY_CFG_REG2_VMAX, 1, tas2770_playback_volume), 527 SOC_SINGLE_TLV("Amp Gain Volume", TAS2770_PLAY_CFG_REG0, 0, 0x14, 0, 528 tas2770_digital_tlv), 529 }; 530 531 static const struct snd_soc_component_driver soc_component_driver_tas2770 = { 532 .probe = tas2770_codec_probe, 533 .suspend = tas2770_codec_suspend, 534 .resume = tas2770_codec_resume, 535 .set_bias_level = tas2770_set_bias_level, 536 .controls = tas2770_snd_controls, 537 .num_controls = ARRAY_SIZE(tas2770_snd_controls), 538 .dapm_widgets = tas2770_dapm_widgets, 539 .num_dapm_widgets = ARRAY_SIZE(tas2770_dapm_widgets), 540 .dapm_routes = tas2770_audio_map, 541 .num_dapm_routes = ARRAY_SIZE(tas2770_audio_map), 542 .idle_bias_on = 1, 543 .endianness = 1, 544 .non_legacy_dai_naming = 1, 545 }; 546 547 static int tas2770_register_codec(struct tas2770_priv *tas2770) 548 { 549 return devm_snd_soc_register_component(tas2770->dev, 550 &soc_component_driver_tas2770, 551 tas2770_dai_driver, ARRAY_SIZE(tas2770_dai_driver)); 552 } 553 554 static const struct reg_default tas2770_reg_defaults[] = { 555 { TAS2770_PAGE, 0x00 }, 556 { TAS2770_SW_RST, 0x00 }, 557 { TAS2770_PWR_CTRL, 0x0e }, 558 { TAS2770_PLAY_CFG_REG0, 0x10 }, 559 { TAS2770_PLAY_CFG_REG1, 0x01 }, 560 { TAS2770_PLAY_CFG_REG2, 0x00 }, 561 { TAS2770_MSC_CFG_REG0, 0x07 }, 562 { TAS2770_TDM_CFG_REG1, 0x02 }, 563 { TAS2770_TDM_CFG_REG2, 0x0a }, 564 { TAS2770_TDM_CFG_REG3, 0x10 }, 565 { TAS2770_INT_MASK_REG0, 0xfc }, 566 { TAS2770_INT_MASK_REG1, 0xb1 }, 567 { TAS2770_INT_CFG, 0x05 }, 568 { TAS2770_MISC_IRQ, 0x81 }, 569 { TAS2770_CLK_CGF, 0x0c }, 570 571 }; 572 573 static bool tas2770_volatile(struct device *dev, unsigned int reg) 574 { 575 switch (reg) { 576 case TAS2770_PAGE: /* regmap implementation requires this */ 577 case TAS2770_SW_RST: /* always clears after write */ 578 case TAS2770_BO_PRV_REG0:/* has a self clearing bit */ 579 case TAS2770_LVE_INT_REG0: 580 case TAS2770_LVE_INT_REG1: 581 case TAS2770_LAT_INT_REG0:/* Sticky interrupt flags */ 582 case TAS2770_LAT_INT_REG1:/* Sticky interrupt flags */ 583 case TAS2770_VBAT_MSB: 584 case TAS2770_VBAT_LSB: 585 case TAS2770_TEMP_MSB: 586 case TAS2770_TEMP_LSB: 587 return true; 588 } 589 590 return false; 591 } 592 593 static bool tas2770_writeable(struct device *dev, unsigned int reg) 594 { 595 switch (reg) { 596 case TAS2770_LVE_INT_REG0: 597 case TAS2770_LVE_INT_REG1: 598 case TAS2770_LAT_INT_REG0: 599 case TAS2770_LAT_INT_REG1: 600 case TAS2770_VBAT_MSB: 601 case TAS2770_VBAT_LSB: 602 case TAS2770_TEMP_MSB: 603 case TAS2770_TEMP_LSB: 604 case TAS2770_TDM_CLK_DETC: 605 case TAS2770_REV_AND_GPID: 606 return false; 607 } 608 609 return true; 610 } 611 612 static const struct regmap_range_cfg tas2770_regmap_ranges[] = { 613 { 614 .range_min = 0, 615 .range_max = 1 * 128, 616 .selector_reg = TAS2770_PAGE, 617 .selector_mask = 0xff, 618 .selector_shift = 0, 619 .window_start = 0, 620 .window_len = 128, 621 }, 622 }; 623 624 static const struct regmap_config tas2770_i2c_regmap = { 625 .reg_bits = 8, 626 .val_bits = 8, 627 .writeable_reg = tas2770_writeable, 628 .volatile_reg = tas2770_volatile, 629 .reg_defaults = tas2770_reg_defaults, 630 .num_reg_defaults = ARRAY_SIZE(tas2770_reg_defaults), 631 .cache_type = REGCACHE_RBTREE, 632 .ranges = tas2770_regmap_ranges, 633 .num_ranges = ARRAY_SIZE(tas2770_regmap_ranges), 634 .max_register = 1 * 128, 635 }; 636 637 static int tas2770_parse_dt(struct device *dev, struct tas2770_priv *tas2770) 638 { 639 int rc = 0; 640 641 rc = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no", 642 &tas2770->i_sense_slot); 643 if (rc) { 644 dev_info(tas2770->dev, "Property %s is missing setting default slot\n", 645 "ti,imon-slot-no"); 646 647 tas2770->i_sense_slot = 0; 648 } 649 650 rc = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no", 651 &tas2770->v_sense_slot); 652 if (rc) { 653 dev_info(tas2770->dev, "Property %s is missing setting default slot\n", 654 "ti,vmon-slot-no"); 655 656 tas2770->v_sense_slot = 2; 657 } 658 659 tas2770->sdz_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH); 660 if (IS_ERR(tas2770->sdz_gpio)) { 661 if (PTR_ERR(tas2770->sdz_gpio) == -EPROBE_DEFER) 662 return -EPROBE_DEFER; 663 664 tas2770->sdz_gpio = NULL; 665 } 666 667 return 0; 668 } 669 670 static int tas2770_i2c_probe(struct i2c_client *client, 671 const struct i2c_device_id *id) 672 { 673 struct tas2770_priv *tas2770; 674 int result; 675 676 tas2770 = devm_kzalloc(&client->dev, sizeof(struct tas2770_priv), 677 GFP_KERNEL); 678 if (!tas2770) 679 return -ENOMEM; 680 681 tas2770->dev = &client->dev; 682 i2c_set_clientdata(client, tas2770); 683 dev_set_drvdata(&client->dev, tas2770); 684 685 tas2770->regmap = devm_regmap_init_i2c(client, &tas2770_i2c_regmap); 686 if (IS_ERR(tas2770->regmap)) { 687 result = PTR_ERR(tas2770->regmap); 688 dev_err(&client->dev, "Failed to allocate register map: %d\n", 689 result); 690 return result; 691 } 692 693 if (client->dev.of_node) { 694 result = tas2770_parse_dt(&client->dev, tas2770); 695 if (result) { 696 dev_err(tas2770->dev, "%s: Failed to parse devicetree\n", 697 __func__); 698 return result; 699 } 700 } 701 702 tas2770->reset_gpio = devm_gpiod_get_optional(tas2770->dev, "reset", 703 GPIOD_OUT_HIGH); 704 if (IS_ERR(tas2770->reset_gpio)) { 705 if (PTR_ERR(tas2770->reset_gpio) == -EPROBE_DEFER) { 706 tas2770->reset_gpio = NULL; 707 return -EPROBE_DEFER; 708 } 709 } 710 711 result = tas2770_register_codec(tas2770); 712 if (result) 713 dev_err(tas2770->dev, "Register codec failed.\n"); 714 715 return result; 716 } 717 718 static const struct i2c_device_id tas2770_i2c_id[] = { 719 { "tas2770", 0}, 720 { } 721 }; 722 MODULE_DEVICE_TABLE(i2c, tas2770_i2c_id); 723 724 #if defined(CONFIG_OF) 725 static const struct of_device_id tas2770_of_match[] = { 726 { .compatible = "ti,tas2770" }, 727 {}, 728 }; 729 MODULE_DEVICE_TABLE(of, tas2770_of_match); 730 #endif 731 732 static struct i2c_driver tas2770_i2c_driver = { 733 .driver = { 734 .name = "tas2770", 735 .of_match_table = of_match_ptr(tas2770_of_match), 736 }, 737 .probe = tas2770_i2c_probe, 738 .id_table = tas2770_i2c_id, 739 }; 740 module_i2c_driver(tas2770_i2c_driver); 741 742 MODULE_AUTHOR("Shi Fu <shifu0704@thundersoft.com>"); 743 MODULE_DESCRIPTION("TAS2770 I2C Smart Amplifier driver"); 744 MODULE_LICENSE("GPL v2"); 745