1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * TAS5086 ASoC codec driver 4 * 5 * Copyright (c) 2013 Daniel Mack <zonque@gmail.com> 6 * 7 * TODO: 8 * - implement DAPM and input muxing 9 * - implement modulation limit 10 * - implement non-default PWM start 11 * 12 * Note that this chip has a very unusual register layout, specifically 13 * because the registers are of unequal size, and multi-byte registers 14 * require bulk writes to take effect. Regmap does not support that kind 15 * of devices. 16 * 17 * Currently, the driver does not touch any of the registers >= 0x20, so 18 * it doesn't matter because the entire map can be accessed as 8-bit 19 * array. In case more features will be added in the future 20 * that require access to higher registers, the entire regmap H/W I/O 21 * routines have to be open-coded. 22 */ 23 24 #include <linux/module.h> 25 #include <linux/slab.h> 26 #include <linux/delay.h> 27 #include <linux/gpio.h> 28 #include <linux/i2c.h> 29 #include <linux/regmap.h> 30 #include <linux/regulator/consumer.h> 31 #include <linux/spi/spi.h> 32 #include <linux/of.h> 33 #include <linux/of_device.h> 34 #include <linux/of_gpio.h> 35 #include <sound/pcm.h> 36 #include <sound/pcm_params.h> 37 #include <sound/soc.h> 38 #include <sound/tlv.h> 39 #include <sound/tas5086.h> 40 41 #define TAS5086_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ 42 SNDRV_PCM_FMTBIT_S20_3LE | \ 43 SNDRV_PCM_FMTBIT_S24_3LE) 44 45 #define TAS5086_PCM_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \ 46 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | \ 47 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 | \ 48 SNDRV_PCM_RATE_192000) 49 50 /* 51 * TAS5086 registers 52 */ 53 #define TAS5086_CLOCK_CONTROL 0x00 /* Clock control register */ 54 #define TAS5086_CLOCK_RATE(val) (val << 5) 55 #define TAS5086_CLOCK_RATE_MASK (0x7 << 5) 56 #define TAS5086_CLOCK_RATIO(val) (val << 2) 57 #define TAS5086_CLOCK_RATIO_MASK (0x7 << 2) 58 #define TAS5086_CLOCK_SCLK_RATIO_48 (1 << 1) 59 #define TAS5086_CLOCK_VALID (1 << 0) 60 61 #define TAS5086_DEEMPH_MASK 0x03 62 #define TAS5086_SOFT_MUTE_ALL 0x3f 63 64 #define TAS5086_DEV_ID 0x01 /* Device ID register */ 65 #define TAS5086_ERROR_STATUS 0x02 /* Error status register */ 66 #define TAS5086_SYS_CONTROL_1 0x03 /* System control register 1 */ 67 #define TAS5086_SERIAL_DATA_IF 0x04 /* Serial data interface register */ 68 #define TAS5086_SYS_CONTROL_2 0x05 /* System control register 2 */ 69 #define TAS5086_SOFT_MUTE 0x06 /* Soft mute register */ 70 #define TAS5086_MASTER_VOL 0x07 /* Master volume */ 71 #define TAS5086_CHANNEL_VOL(X) (0x08 + (X)) /* Channel 1-6 volume */ 72 #define TAS5086_VOLUME_CONTROL 0x09 /* Volume control register */ 73 #define TAS5086_MOD_LIMIT 0x10 /* Modulation limit register */ 74 #define TAS5086_PWM_START 0x18 /* PWM start register */ 75 #define TAS5086_SURROUND 0x19 /* Surround register */ 76 #define TAS5086_SPLIT_CAP_CHARGE 0x1a /* Split cap charge period register */ 77 #define TAS5086_OSC_TRIM 0x1b /* Oscillator trim register */ 78 #define TAS5086_BKNDERR 0x1c 79 #define TAS5086_INPUT_MUX 0x20 80 #define TAS5086_PWM_OUTPUT_MUX 0x25 81 82 #define TAS5086_MAX_REGISTER TAS5086_PWM_OUTPUT_MUX 83 84 #define TAS5086_PWM_START_MIDZ_FOR_START_1 (1 << 7) 85 #define TAS5086_PWM_START_MIDZ_FOR_START_2 (1 << 6) 86 #define TAS5086_PWM_START_CHANNEL_MASK (0x3f) 87 88 /* 89 * Default TAS5086 power-up configuration 90 */ 91 static const struct reg_default tas5086_reg_defaults[] = { 92 { 0x00, 0x6c }, 93 { 0x01, 0x03 }, 94 { 0x02, 0x00 }, 95 { 0x03, 0xa0 }, 96 { 0x04, 0x05 }, 97 { 0x05, 0x60 }, 98 { 0x06, 0x00 }, 99 { 0x07, 0xff }, 100 { 0x08, 0x30 }, 101 { 0x09, 0x30 }, 102 { 0x0a, 0x30 }, 103 { 0x0b, 0x30 }, 104 { 0x0c, 0x30 }, 105 { 0x0d, 0x30 }, 106 { 0x0e, 0xb1 }, 107 { 0x0f, 0x00 }, 108 { 0x10, 0x02 }, 109 { 0x11, 0x00 }, 110 { 0x12, 0x00 }, 111 { 0x13, 0x00 }, 112 { 0x14, 0x00 }, 113 { 0x15, 0x00 }, 114 { 0x16, 0x00 }, 115 { 0x17, 0x00 }, 116 { 0x18, 0x3f }, 117 { 0x19, 0x00 }, 118 { 0x1a, 0x18 }, 119 { 0x1b, 0x82 }, 120 { 0x1c, 0x05 }, 121 }; 122 123 static int tas5086_register_size(struct device *dev, unsigned int reg) 124 { 125 switch (reg) { 126 case TAS5086_CLOCK_CONTROL ... TAS5086_BKNDERR: 127 return 1; 128 case TAS5086_INPUT_MUX: 129 case TAS5086_PWM_OUTPUT_MUX: 130 return 4; 131 } 132 133 dev_err(dev, "Unsupported register address: %d\n", reg); 134 return 0; 135 } 136 137 static bool tas5086_accessible_reg(struct device *dev, unsigned int reg) 138 { 139 switch (reg) { 140 case 0x0f: 141 case 0x11 ... 0x17: 142 case 0x1d ... 0x1f: 143 return false; 144 default: 145 return true; 146 } 147 } 148 149 static bool tas5086_volatile_reg(struct device *dev, unsigned int reg) 150 { 151 switch (reg) { 152 case TAS5086_DEV_ID: 153 case TAS5086_ERROR_STATUS: 154 return true; 155 } 156 157 return false; 158 } 159 160 static bool tas5086_writeable_reg(struct device *dev, unsigned int reg) 161 { 162 return tas5086_accessible_reg(dev, reg) && (reg != TAS5086_DEV_ID); 163 } 164 165 static int tas5086_reg_write(void *context, unsigned int reg, 166 unsigned int value) 167 { 168 struct i2c_client *client = context; 169 unsigned int i, size; 170 uint8_t buf[5]; 171 int ret; 172 173 size = tas5086_register_size(&client->dev, reg); 174 if (size == 0) 175 return -EINVAL; 176 177 buf[0] = reg; 178 179 for (i = size; i >= 1; --i) { 180 buf[i] = value; 181 value >>= 8; 182 } 183 184 ret = i2c_master_send(client, buf, size + 1); 185 if (ret == size + 1) 186 return 0; 187 else if (ret < 0) 188 return ret; 189 else 190 return -EIO; 191 } 192 193 static int tas5086_reg_read(void *context, unsigned int reg, 194 unsigned int *value) 195 { 196 struct i2c_client *client = context; 197 uint8_t send_buf, recv_buf[4]; 198 struct i2c_msg msgs[2]; 199 unsigned int size; 200 unsigned int i; 201 int ret; 202 203 size = tas5086_register_size(&client->dev, reg); 204 if (size == 0) 205 return -EINVAL; 206 207 send_buf = reg; 208 209 msgs[0].addr = client->addr; 210 msgs[0].len = sizeof(send_buf); 211 msgs[0].buf = &send_buf; 212 msgs[0].flags = 0; 213 214 msgs[1].addr = client->addr; 215 msgs[1].len = size; 216 msgs[1].buf = recv_buf; 217 msgs[1].flags = I2C_M_RD; 218 219 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); 220 if (ret < 0) 221 return ret; 222 else if (ret != ARRAY_SIZE(msgs)) 223 return -EIO; 224 225 *value = 0; 226 227 for (i = 0; i < size; i++) { 228 *value <<= 8; 229 *value |= recv_buf[i]; 230 } 231 232 return 0; 233 } 234 235 static const char * const supply_names[] = { 236 "dvdd", "avdd" 237 }; 238 239 struct tas5086_private { 240 struct regmap *regmap; 241 unsigned int mclk, sclk; 242 unsigned int format; 243 bool deemph; 244 unsigned int charge_period; 245 unsigned int pwm_start_mid_z; 246 /* Current sample rate for de-emphasis control */ 247 int rate; 248 /* GPIO driving Reset pin, if any */ 249 int gpio_nreset; 250 struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)]; 251 }; 252 253 static int tas5086_deemph[] = { 0, 32000, 44100, 48000 }; 254 255 static int tas5086_set_deemph(struct snd_soc_component *component) 256 { 257 struct tas5086_private *priv = snd_soc_component_get_drvdata(component); 258 int i, val = 0; 259 260 if (priv->deemph) { 261 for (i = 0; i < ARRAY_SIZE(tas5086_deemph); i++) { 262 if (tas5086_deemph[i] == priv->rate) { 263 val = i; 264 break; 265 } 266 } 267 } 268 269 return regmap_update_bits(priv->regmap, TAS5086_SYS_CONTROL_1, 270 TAS5086_DEEMPH_MASK, val); 271 } 272 273 static int tas5086_get_deemph(struct snd_kcontrol *kcontrol, 274 struct snd_ctl_elem_value *ucontrol) 275 { 276 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 277 struct tas5086_private *priv = snd_soc_component_get_drvdata(component); 278 279 ucontrol->value.integer.value[0] = priv->deemph; 280 281 return 0; 282 } 283 284 static int tas5086_put_deemph(struct snd_kcontrol *kcontrol, 285 struct snd_ctl_elem_value *ucontrol) 286 { 287 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 288 struct tas5086_private *priv = snd_soc_component_get_drvdata(component); 289 290 priv->deemph = ucontrol->value.integer.value[0]; 291 292 return tas5086_set_deemph(component); 293 } 294 295 296 static int tas5086_set_dai_sysclk(struct snd_soc_dai *codec_dai, 297 int clk_id, unsigned int freq, int dir) 298 { 299 struct snd_soc_component *component = codec_dai->component; 300 struct tas5086_private *priv = snd_soc_component_get_drvdata(component); 301 302 switch (clk_id) { 303 case TAS5086_CLK_IDX_MCLK: 304 priv->mclk = freq; 305 break; 306 case TAS5086_CLK_IDX_SCLK: 307 priv->sclk = freq; 308 break; 309 } 310 311 return 0; 312 } 313 314 static int tas5086_set_dai_fmt(struct snd_soc_dai *codec_dai, 315 unsigned int format) 316 { 317 struct snd_soc_component *component = codec_dai->component; 318 struct tas5086_private *priv = snd_soc_component_get_drvdata(component); 319 320 /* The TAS5086 can only be slave to all clocks */ 321 if ((format & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) != SND_SOC_DAIFMT_CBC_CFC) { 322 dev_err(component->dev, "Invalid clocking mode\n"); 323 return -EINVAL; 324 } 325 326 /* we need to refer to the data format from hw_params() */ 327 priv->format = format; 328 329 return 0; 330 } 331 332 static const int tas5086_sample_rates[] = { 333 32000, 38000, 44100, 48000, 88200, 96000, 176400, 192000 334 }; 335 336 static const int tas5086_ratios[] = { 337 64, 128, 192, 256, 384, 512 338 }; 339 340 static int index_in_array(const int *array, int len, int needle) 341 { 342 int i; 343 344 for (i = 0; i < len; i++) 345 if (array[i] == needle) 346 return i; 347 348 return -ENOENT; 349 } 350 351 static int tas5086_hw_params(struct snd_pcm_substream *substream, 352 struct snd_pcm_hw_params *params, 353 struct snd_soc_dai *dai) 354 { 355 struct snd_soc_component *component = dai->component; 356 struct tas5086_private *priv = snd_soc_component_get_drvdata(component); 357 int val; 358 int ret; 359 360 priv->rate = params_rate(params); 361 362 /* Look up the sample rate and refer to the offset in the list */ 363 val = index_in_array(tas5086_sample_rates, 364 ARRAY_SIZE(tas5086_sample_rates), priv->rate); 365 366 if (val < 0) { 367 dev_err(component->dev, "Invalid sample rate\n"); 368 return -EINVAL; 369 } 370 371 ret = regmap_update_bits(priv->regmap, TAS5086_CLOCK_CONTROL, 372 TAS5086_CLOCK_RATE_MASK, 373 TAS5086_CLOCK_RATE(val)); 374 if (ret < 0) 375 return ret; 376 377 /* MCLK / Fs ratio */ 378 val = index_in_array(tas5086_ratios, ARRAY_SIZE(tas5086_ratios), 379 priv->mclk / priv->rate); 380 if (val < 0) { 381 dev_err(component->dev, "Invalid MCLK / Fs ratio\n"); 382 return -EINVAL; 383 } 384 385 ret = regmap_update_bits(priv->regmap, TAS5086_CLOCK_CONTROL, 386 TAS5086_CLOCK_RATIO_MASK, 387 TAS5086_CLOCK_RATIO(val)); 388 if (ret < 0) 389 return ret; 390 391 392 ret = regmap_update_bits(priv->regmap, TAS5086_CLOCK_CONTROL, 393 TAS5086_CLOCK_SCLK_RATIO_48, 394 (priv->sclk == 48 * priv->rate) ? 395 TAS5086_CLOCK_SCLK_RATIO_48 : 0); 396 if (ret < 0) 397 return ret; 398 399 /* 400 * The chip has a very unituitive register mapping and muxes information 401 * about data format and sample depth into the same register, but not on 402 * a logical bit-boundary. Hence, we have to refer to the format passed 403 * in the set_dai_fmt() callback and set up everything from here. 404 * 405 * First, determine the 'base' value, using the format ... 406 */ 407 switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) { 408 case SND_SOC_DAIFMT_RIGHT_J: 409 val = 0x00; 410 break; 411 case SND_SOC_DAIFMT_I2S: 412 val = 0x03; 413 break; 414 case SND_SOC_DAIFMT_LEFT_J: 415 val = 0x06; 416 break; 417 default: 418 dev_err(component->dev, "Invalid DAI format\n"); 419 return -EINVAL; 420 } 421 422 /* ... then add the offset for the sample bit depth. */ 423 switch (params_width(params)) { 424 case 16: 425 val += 0; 426 break; 427 case 20: 428 val += 1; 429 break; 430 case 24: 431 val += 2; 432 break; 433 default: 434 dev_err(component->dev, "Invalid bit width\n"); 435 return -EINVAL; 436 } 437 438 ret = regmap_write(priv->regmap, TAS5086_SERIAL_DATA_IF, val); 439 if (ret < 0) 440 return ret; 441 442 /* clock is considered valid now */ 443 ret = regmap_update_bits(priv->regmap, TAS5086_CLOCK_CONTROL, 444 TAS5086_CLOCK_VALID, TAS5086_CLOCK_VALID); 445 if (ret < 0) 446 return ret; 447 448 return tas5086_set_deemph(component); 449 } 450 451 static int tas5086_mute_stream(struct snd_soc_dai *dai, int mute, int stream) 452 { 453 struct snd_soc_component *component = dai->component; 454 struct tas5086_private *priv = snd_soc_component_get_drvdata(component); 455 unsigned int val = 0; 456 457 if (mute) 458 val = TAS5086_SOFT_MUTE_ALL; 459 460 return regmap_write(priv->regmap, TAS5086_SOFT_MUTE, val); 461 } 462 463 static void tas5086_reset(struct tas5086_private *priv) 464 { 465 if (gpio_is_valid(priv->gpio_nreset)) { 466 /* Reset codec - minimum assertion time is 400ns */ 467 gpio_direction_output(priv->gpio_nreset, 0); 468 udelay(1); 469 gpio_set_value(priv->gpio_nreset, 1); 470 471 /* Codec needs ~15ms to wake up */ 472 msleep(15); 473 } 474 } 475 476 /* charge period values in microseconds */ 477 static const int tas5086_charge_period[] = { 478 13000, 16900, 23400, 31200, 41600, 54600, 72800, 96200, 479 130000, 156000, 234000, 312000, 416000, 546000, 728000, 962000, 480 1300000, 169000, 2340000, 3120000, 4160000, 5460000, 7280000, 9620000, 481 }; 482 483 static int tas5086_init(struct device *dev, struct tas5086_private *priv) 484 { 485 int ret, i; 486 487 /* 488 * If any of the channels is configured to start in Mid-Z mode, 489 * configure 'part 1' of the PWM starts to use Mid-Z, and tell 490 * all configured mid-z channels to start under 'part 1'. 491 */ 492 if (priv->pwm_start_mid_z) 493 regmap_write(priv->regmap, TAS5086_PWM_START, 494 TAS5086_PWM_START_MIDZ_FOR_START_1 | 495 priv->pwm_start_mid_z); 496 497 /* lookup and set split-capacitor charge period */ 498 if (priv->charge_period == 0) { 499 regmap_write(priv->regmap, TAS5086_SPLIT_CAP_CHARGE, 0); 500 } else { 501 i = index_in_array(tas5086_charge_period, 502 ARRAY_SIZE(tas5086_charge_period), 503 priv->charge_period); 504 if (i >= 0) 505 regmap_write(priv->regmap, TAS5086_SPLIT_CAP_CHARGE, 506 i + 0x08); 507 else 508 dev_warn(dev, 509 "Invalid split-cap charge period of %d ns.\n", 510 priv->charge_period); 511 } 512 513 /* enable factory trim */ 514 ret = regmap_write(priv->regmap, TAS5086_OSC_TRIM, 0x00); 515 if (ret < 0) 516 return ret; 517 518 /* start all channels */ 519 ret = regmap_write(priv->regmap, TAS5086_SYS_CONTROL_2, 0x20); 520 if (ret < 0) 521 return ret; 522 523 /* mute all channels for now */ 524 ret = regmap_write(priv->regmap, TAS5086_SOFT_MUTE, 525 TAS5086_SOFT_MUTE_ALL); 526 if (ret < 0) 527 return ret; 528 529 return 0; 530 } 531 532 /* TAS5086 controls */ 533 static const DECLARE_TLV_DB_SCALE(tas5086_dac_tlv, -10350, 50, 1); 534 535 static const struct snd_kcontrol_new tas5086_controls[] = { 536 SOC_SINGLE_TLV("Master Playback Volume", TAS5086_MASTER_VOL, 537 0, 0xff, 1, tas5086_dac_tlv), 538 SOC_DOUBLE_R_TLV("Channel 1/2 Playback Volume", 539 TAS5086_CHANNEL_VOL(0), TAS5086_CHANNEL_VOL(1), 540 0, 0xff, 1, tas5086_dac_tlv), 541 SOC_DOUBLE_R_TLV("Channel 3/4 Playback Volume", 542 TAS5086_CHANNEL_VOL(2), TAS5086_CHANNEL_VOL(3), 543 0, 0xff, 1, tas5086_dac_tlv), 544 SOC_DOUBLE_R_TLV("Channel 5/6 Playback Volume", 545 TAS5086_CHANNEL_VOL(4), TAS5086_CHANNEL_VOL(5), 546 0, 0xff, 1, tas5086_dac_tlv), 547 SOC_SINGLE_BOOL_EXT("De-emphasis Switch", 0, 548 tas5086_get_deemph, tas5086_put_deemph), 549 }; 550 551 /* Input mux controls */ 552 static const char *tas5086_dapm_sdin_texts[] = 553 { 554 "SDIN1-L", "SDIN1-R", "SDIN2-L", "SDIN2-R", 555 "SDIN3-L", "SDIN3-R", "Ground (0)", "nc" 556 }; 557 558 static const struct soc_enum tas5086_dapm_input_mux_enum[] = { 559 SOC_ENUM_SINGLE(TAS5086_INPUT_MUX, 20, 8, tas5086_dapm_sdin_texts), 560 SOC_ENUM_SINGLE(TAS5086_INPUT_MUX, 16, 8, tas5086_dapm_sdin_texts), 561 SOC_ENUM_SINGLE(TAS5086_INPUT_MUX, 12, 8, tas5086_dapm_sdin_texts), 562 SOC_ENUM_SINGLE(TAS5086_INPUT_MUX, 8, 8, tas5086_dapm_sdin_texts), 563 SOC_ENUM_SINGLE(TAS5086_INPUT_MUX, 4, 8, tas5086_dapm_sdin_texts), 564 SOC_ENUM_SINGLE(TAS5086_INPUT_MUX, 0, 8, tas5086_dapm_sdin_texts), 565 }; 566 567 static const struct snd_kcontrol_new tas5086_dapm_input_mux_controls[] = { 568 SOC_DAPM_ENUM("Channel 1 input", tas5086_dapm_input_mux_enum[0]), 569 SOC_DAPM_ENUM("Channel 2 input", tas5086_dapm_input_mux_enum[1]), 570 SOC_DAPM_ENUM("Channel 3 input", tas5086_dapm_input_mux_enum[2]), 571 SOC_DAPM_ENUM("Channel 4 input", tas5086_dapm_input_mux_enum[3]), 572 SOC_DAPM_ENUM("Channel 5 input", tas5086_dapm_input_mux_enum[4]), 573 SOC_DAPM_ENUM("Channel 6 input", tas5086_dapm_input_mux_enum[5]), 574 }; 575 576 /* Output mux controls */ 577 static const char *tas5086_dapm_channel_texts[] = 578 { "Channel 1 Mux", "Channel 2 Mux", "Channel 3 Mux", 579 "Channel 4 Mux", "Channel 5 Mux", "Channel 6 Mux" }; 580 581 static const struct soc_enum tas5086_dapm_output_mux_enum[] = { 582 SOC_ENUM_SINGLE(TAS5086_PWM_OUTPUT_MUX, 20, 6, tas5086_dapm_channel_texts), 583 SOC_ENUM_SINGLE(TAS5086_PWM_OUTPUT_MUX, 16, 6, tas5086_dapm_channel_texts), 584 SOC_ENUM_SINGLE(TAS5086_PWM_OUTPUT_MUX, 12, 6, tas5086_dapm_channel_texts), 585 SOC_ENUM_SINGLE(TAS5086_PWM_OUTPUT_MUX, 8, 6, tas5086_dapm_channel_texts), 586 SOC_ENUM_SINGLE(TAS5086_PWM_OUTPUT_MUX, 4, 6, tas5086_dapm_channel_texts), 587 SOC_ENUM_SINGLE(TAS5086_PWM_OUTPUT_MUX, 0, 6, tas5086_dapm_channel_texts), 588 }; 589 590 static const struct snd_kcontrol_new tas5086_dapm_output_mux_controls[] = { 591 SOC_DAPM_ENUM("PWM1 Output", tas5086_dapm_output_mux_enum[0]), 592 SOC_DAPM_ENUM("PWM2 Output", tas5086_dapm_output_mux_enum[1]), 593 SOC_DAPM_ENUM("PWM3 Output", tas5086_dapm_output_mux_enum[2]), 594 SOC_DAPM_ENUM("PWM4 Output", tas5086_dapm_output_mux_enum[3]), 595 SOC_DAPM_ENUM("PWM5 Output", tas5086_dapm_output_mux_enum[4]), 596 SOC_DAPM_ENUM("PWM6 Output", tas5086_dapm_output_mux_enum[5]), 597 }; 598 599 static const struct snd_soc_dapm_widget tas5086_dapm_widgets[] = { 600 SND_SOC_DAPM_INPUT("SDIN1-L"), 601 SND_SOC_DAPM_INPUT("SDIN1-R"), 602 SND_SOC_DAPM_INPUT("SDIN2-L"), 603 SND_SOC_DAPM_INPUT("SDIN2-R"), 604 SND_SOC_DAPM_INPUT("SDIN3-L"), 605 SND_SOC_DAPM_INPUT("SDIN3-R"), 606 SND_SOC_DAPM_INPUT("SDIN4-L"), 607 SND_SOC_DAPM_INPUT("SDIN4-R"), 608 609 SND_SOC_DAPM_OUTPUT("PWM1"), 610 SND_SOC_DAPM_OUTPUT("PWM2"), 611 SND_SOC_DAPM_OUTPUT("PWM3"), 612 SND_SOC_DAPM_OUTPUT("PWM4"), 613 SND_SOC_DAPM_OUTPUT("PWM5"), 614 SND_SOC_DAPM_OUTPUT("PWM6"), 615 616 SND_SOC_DAPM_MUX("Channel 1 Mux", SND_SOC_NOPM, 0, 0, 617 &tas5086_dapm_input_mux_controls[0]), 618 SND_SOC_DAPM_MUX("Channel 2 Mux", SND_SOC_NOPM, 0, 0, 619 &tas5086_dapm_input_mux_controls[1]), 620 SND_SOC_DAPM_MUX("Channel 3 Mux", SND_SOC_NOPM, 0, 0, 621 &tas5086_dapm_input_mux_controls[2]), 622 SND_SOC_DAPM_MUX("Channel 4 Mux", SND_SOC_NOPM, 0, 0, 623 &tas5086_dapm_input_mux_controls[3]), 624 SND_SOC_DAPM_MUX("Channel 5 Mux", SND_SOC_NOPM, 0, 0, 625 &tas5086_dapm_input_mux_controls[4]), 626 SND_SOC_DAPM_MUX("Channel 6 Mux", SND_SOC_NOPM, 0, 0, 627 &tas5086_dapm_input_mux_controls[5]), 628 629 SND_SOC_DAPM_MUX("PWM1 Mux", SND_SOC_NOPM, 0, 0, 630 &tas5086_dapm_output_mux_controls[0]), 631 SND_SOC_DAPM_MUX("PWM2 Mux", SND_SOC_NOPM, 0, 0, 632 &tas5086_dapm_output_mux_controls[1]), 633 SND_SOC_DAPM_MUX("PWM3 Mux", SND_SOC_NOPM, 0, 0, 634 &tas5086_dapm_output_mux_controls[2]), 635 SND_SOC_DAPM_MUX("PWM4 Mux", SND_SOC_NOPM, 0, 0, 636 &tas5086_dapm_output_mux_controls[3]), 637 SND_SOC_DAPM_MUX("PWM5 Mux", SND_SOC_NOPM, 0, 0, 638 &tas5086_dapm_output_mux_controls[4]), 639 SND_SOC_DAPM_MUX("PWM6 Mux", SND_SOC_NOPM, 0, 0, 640 &tas5086_dapm_output_mux_controls[5]), 641 }; 642 643 static const struct snd_soc_dapm_route tas5086_dapm_routes[] = { 644 /* SDIN inputs -> channel muxes */ 645 { "Channel 1 Mux", "SDIN1-L", "SDIN1-L" }, 646 { "Channel 1 Mux", "SDIN1-R", "SDIN1-R" }, 647 { "Channel 1 Mux", "SDIN2-L", "SDIN2-L" }, 648 { "Channel 1 Mux", "SDIN2-R", "SDIN2-R" }, 649 { "Channel 1 Mux", "SDIN3-L", "SDIN3-L" }, 650 { "Channel 1 Mux", "SDIN3-R", "SDIN3-R" }, 651 652 { "Channel 2 Mux", "SDIN1-L", "SDIN1-L" }, 653 { "Channel 2 Mux", "SDIN1-R", "SDIN1-R" }, 654 { "Channel 2 Mux", "SDIN2-L", "SDIN2-L" }, 655 { "Channel 2 Mux", "SDIN2-R", "SDIN2-R" }, 656 { "Channel 2 Mux", "SDIN3-L", "SDIN3-L" }, 657 { "Channel 2 Mux", "SDIN3-R", "SDIN3-R" }, 658 659 { "Channel 2 Mux", "SDIN1-L", "SDIN1-L" }, 660 { "Channel 2 Mux", "SDIN1-R", "SDIN1-R" }, 661 { "Channel 2 Mux", "SDIN2-L", "SDIN2-L" }, 662 { "Channel 2 Mux", "SDIN2-R", "SDIN2-R" }, 663 { "Channel 2 Mux", "SDIN3-L", "SDIN3-L" }, 664 { "Channel 2 Mux", "SDIN3-R", "SDIN3-R" }, 665 666 { "Channel 3 Mux", "SDIN1-L", "SDIN1-L" }, 667 { "Channel 3 Mux", "SDIN1-R", "SDIN1-R" }, 668 { "Channel 3 Mux", "SDIN2-L", "SDIN2-L" }, 669 { "Channel 3 Mux", "SDIN2-R", "SDIN2-R" }, 670 { "Channel 3 Mux", "SDIN3-L", "SDIN3-L" }, 671 { "Channel 3 Mux", "SDIN3-R", "SDIN3-R" }, 672 673 { "Channel 4 Mux", "SDIN1-L", "SDIN1-L" }, 674 { "Channel 4 Mux", "SDIN1-R", "SDIN1-R" }, 675 { "Channel 4 Mux", "SDIN2-L", "SDIN2-L" }, 676 { "Channel 4 Mux", "SDIN2-R", "SDIN2-R" }, 677 { "Channel 4 Mux", "SDIN3-L", "SDIN3-L" }, 678 { "Channel 4 Mux", "SDIN3-R", "SDIN3-R" }, 679 680 { "Channel 5 Mux", "SDIN1-L", "SDIN1-L" }, 681 { "Channel 5 Mux", "SDIN1-R", "SDIN1-R" }, 682 { "Channel 5 Mux", "SDIN2-L", "SDIN2-L" }, 683 { "Channel 5 Mux", "SDIN2-R", "SDIN2-R" }, 684 { "Channel 5 Mux", "SDIN3-L", "SDIN3-L" }, 685 { "Channel 5 Mux", "SDIN3-R", "SDIN3-R" }, 686 687 { "Channel 6 Mux", "SDIN1-L", "SDIN1-L" }, 688 { "Channel 6 Mux", "SDIN1-R", "SDIN1-R" }, 689 { "Channel 6 Mux", "SDIN2-L", "SDIN2-L" }, 690 { "Channel 6 Mux", "SDIN2-R", "SDIN2-R" }, 691 { "Channel 6 Mux", "SDIN3-L", "SDIN3-L" }, 692 { "Channel 6 Mux", "SDIN3-R", "SDIN3-R" }, 693 694 /* Channel muxes -> PWM muxes */ 695 { "PWM1 Mux", "Channel 1 Mux", "Channel 1 Mux" }, 696 { "PWM2 Mux", "Channel 1 Mux", "Channel 1 Mux" }, 697 { "PWM3 Mux", "Channel 1 Mux", "Channel 1 Mux" }, 698 { "PWM4 Mux", "Channel 1 Mux", "Channel 1 Mux" }, 699 { "PWM5 Mux", "Channel 1 Mux", "Channel 1 Mux" }, 700 { "PWM6 Mux", "Channel 1 Mux", "Channel 1 Mux" }, 701 702 { "PWM1 Mux", "Channel 2 Mux", "Channel 2 Mux" }, 703 { "PWM2 Mux", "Channel 2 Mux", "Channel 2 Mux" }, 704 { "PWM3 Mux", "Channel 2 Mux", "Channel 2 Mux" }, 705 { "PWM4 Mux", "Channel 2 Mux", "Channel 2 Mux" }, 706 { "PWM5 Mux", "Channel 2 Mux", "Channel 2 Mux" }, 707 { "PWM6 Mux", "Channel 2 Mux", "Channel 2 Mux" }, 708 709 { "PWM1 Mux", "Channel 3 Mux", "Channel 3 Mux" }, 710 { "PWM2 Mux", "Channel 3 Mux", "Channel 3 Mux" }, 711 { "PWM3 Mux", "Channel 3 Mux", "Channel 3 Mux" }, 712 { "PWM4 Mux", "Channel 3 Mux", "Channel 3 Mux" }, 713 { "PWM5 Mux", "Channel 3 Mux", "Channel 3 Mux" }, 714 { "PWM6 Mux", "Channel 3 Mux", "Channel 3 Mux" }, 715 716 { "PWM1 Mux", "Channel 4 Mux", "Channel 4 Mux" }, 717 { "PWM2 Mux", "Channel 4 Mux", "Channel 4 Mux" }, 718 { "PWM3 Mux", "Channel 4 Mux", "Channel 4 Mux" }, 719 { "PWM4 Mux", "Channel 4 Mux", "Channel 4 Mux" }, 720 { "PWM5 Mux", "Channel 4 Mux", "Channel 4 Mux" }, 721 { "PWM6 Mux", "Channel 4 Mux", "Channel 4 Mux" }, 722 723 { "PWM1 Mux", "Channel 5 Mux", "Channel 5 Mux" }, 724 { "PWM2 Mux", "Channel 5 Mux", "Channel 5 Mux" }, 725 { "PWM3 Mux", "Channel 5 Mux", "Channel 5 Mux" }, 726 { "PWM4 Mux", "Channel 5 Mux", "Channel 5 Mux" }, 727 { "PWM5 Mux", "Channel 5 Mux", "Channel 5 Mux" }, 728 { "PWM6 Mux", "Channel 5 Mux", "Channel 5 Mux" }, 729 730 { "PWM1 Mux", "Channel 6 Mux", "Channel 6 Mux" }, 731 { "PWM2 Mux", "Channel 6 Mux", "Channel 6 Mux" }, 732 { "PWM3 Mux", "Channel 6 Mux", "Channel 6 Mux" }, 733 { "PWM4 Mux", "Channel 6 Mux", "Channel 6 Mux" }, 734 { "PWM5 Mux", "Channel 6 Mux", "Channel 6 Mux" }, 735 { "PWM6 Mux", "Channel 6 Mux", "Channel 6 Mux" }, 736 737 /* The PWM muxes are directly connected to the PWM outputs */ 738 { "PWM1", NULL, "PWM1 Mux" }, 739 { "PWM2", NULL, "PWM2 Mux" }, 740 { "PWM3", NULL, "PWM3 Mux" }, 741 { "PWM4", NULL, "PWM4 Mux" }, 742 { "PWM5", NULL, "PWM5 Mux" }, 743 { "PWM6", NULL, "PWM6 Mux" }, 744 745 }; 746 747 static const struct snd_soc_dai_ops tas5086_dai_ops = { 748 .hw_params = tas5086_hw_params, 749 .set_sysclk = tas5086_set_dai_sysclk, 750 .set_fmt = tas5086_set_dai_fmt, 751 .mute_stream = tas5086_mute_stream, 752 }; 753 754 static struct snd_soc_dai_driver tas5086_dai = { 755 .name = "tas5086-hifi", 756 .playback = { 757 .stream_name = "Playback", 758 .channels_min = 2, 759 .channels_max = 6, 760 .rates = TAS5086_PCM_RATES, 761 .formats = TAS5086_PCM_FORMATS, 762 }, 763 .ops = &tas5086_dai_ops, 764 }; 765 766 #ifdef CONFIG_PM 767 static int tas5086_soc_suspend(struct snd_soc_component *component) 768 { 769 struct tas5086_private *priv = snd_soc_component_get_drvdata(component); 770 int ret; 771 772 /* Shut down all channels */ 773 ret = regmap_write(priv->regmap, TAS5086_SYS_CONTROL_2, 0x60); 774 if (ret < 0) 775 return ret; 776 777 regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies); 778 779 return 0; 780 } 781 782 static int tas5086_soc_resume(struct snd_soc_component *component) 783 { 784 struct tas5086_private *priv = snd_soc_component_get_drvdata(component); 785 int ret; 786 787 ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies); 788 if (ret < 0) 789 return ret; 790 791 tas5086_reset(priv); 792 regcache_mark_dirty(priv->regmap); 793 794 ret = tas5086_init(component->dev, priv); 795 if (ret < 0) 796 return ret; 797 798 ret = regcache_sync(priv->regmap); 799 if (ret < 0) 800 return ret; 801 802 return 0; 803 } 804 #else 805 #define tas5086_soc_suspend NULL 806 #define tas5086_soc_resume NULL 807 #endif /* CONFIG_PM */ 808 809 #ifdef CONFIG_OF 810 static const struct of_device_id tas5086_dt_ids[] = { 811 { .compatible = "ti,tas5086", }, 812 { } 813 }; 814 MODULE_DEVICE_TABLE(of, tas5086_dt_ids); 815 #endif 816 817 static int tas5086_probe(struct snd_soc_component *component) 818 { 819 struct tas5086_private *priv = snd_soc_component_get_drvdata(component); 820 int i, ret; 821 822 ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies); 823 if (ret < 0) { 824 dev_err(component->dev, "Failed to enable regulators: %d\n", ret); 825 return ret; 826 } 827 828 priv->pwm_start_mid_z = 0; 829 priv->charge_period = 1300000; /* hardware default is 1300 ms */ 830 831 if (of_match_device(of_match_ptr(tas5086_dt_ids), component->dev)) { 832 struct device_node *of_node = component->dev->of_node; 833 834 of_property_read_u32(of_node, "ti,charge-period", 835 &priv->charge_period); 836 837 for (i = 0; i < 6; i++) { 838 char name[25]; 839 840 snprintf(name, sizeof(name), 841 "ti,mid-z-channel-%d", i + 1); 842 843 if (of_property_read_bool(of_node, name)) 844 priv->pwm_start_mid_z |= 1 << i; 845 } 846 } 847 848 tas5086_reset(priv); 849 ret = tas5086_init(component->dev, priv); 850 if (ret < 0) 851 goto exit_disable_regulators; 852 853 /* set master volume to 0 dB */ 854 ret = regmap_write(priv->regmap, TAS5086_MASTER_VOL, 0x30); 855 if (ret < 0) 856 goto exit_disable_regulators; 857 858 return 0; 859 860 exit_disable_regulators: 861 regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies); 862 863 return ret; 864 } 865 866 static void tas5086_remove(struct snd_soc_component *component) 867 { 868 struct tas5086_private *priv = snd_soc_component_get_drvdata(component); 869 870 if (gpio_is_valid(priv->gpio_nreset)) 871 /* Set codec to the reset state */ 872 gpio_set_value(priv->gpio_nreset, 0); 873 874 regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies); 875 }; 876 877 static const struct snd_soc_component_driver soc_component_dev_tas5086 = { 878 .probe = tas5086_probe, 879 .remove = tas5086_remove, 880 .suspend = tas5086_soc_suspend, 881 .resume = tas5086_soc_resume, 882 .controls = tas5086_controls, 883 .num_controls = ARRAY_SIZE(tas5086_controls), 884 .dapm_widgets = tas5086_dapm_widgets, 885 .num_dapm_widgets = ARRAY_SIZE(tas5086_dapm_widgets), 886 .dapm_routes = tas5086_dapm_routes, 887 .num_dapm_routes = ARRAY_SIZE(tas5086_dapm_routes), 888 .idle_bias_on = 1, 889 .use_pmdown_time = 1, 890 .endianness = 1, 891 }; 892 893 static const struct i2c_device_id tas5086_i2c_id[] = { 894 { "tas5086", 0 }, 895 { } 896 }; 897 MODULE_DEVICE_TABLE(i2c, tas5086_i2c_id); 898 899 static const struct regmap_config tas5086_regmap = { 900 .reg_bits = 8, 901 .val_bits = 32, 902 .max_register = TAS5086_MAX_REGISTER, 903 .reg_defaults = tas5086_reg_defaults, 904 .num_reg_defaults = ARRAY_SIZE(tas5086_reg_defaults), 905 .cache_type = REGCACHE_RBTREE, 906 .volatile_reg = tas5086_volatile_reg, 907 .writeable_reg = tas5086_writeable_reg, 908 .readable_reg = tas5086_accessible_reg, 909 .reg_read = tas5086_reg_read, 910 .reg_write = tas5086_reg_write, 911 }; 912 913 static int tas5086_i2c_probe(struct i2c_client *i2c) 914 { 915 struct tas5086_private *priv; 916 struct device *dev = &i2c->dev; 917 int gpio_nreset = -EINVAL; 918 int i, ret; 919 920 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 921 if (!priv) 922 return -ENOMEM; 923 924 for (i = 0; i < ARRAY_SIZE(supply_names); i++) 925 priv->supplies[i].supply = supply_names[i]; 926 927 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(priv->supplies), 928 priv->supplies); 929 if (ret < 0) { 930 dev_err(dev, "Failed to get regulators: %d\n", ret); 931 return ret; 932 } 933 934 priv->regmap = devm_regmap_init(dev, NULL, i2c, &tas5086_regmap); 935 if (IS_ERR(priv->regmap)) { 936 ret = PTR_ERR(priv->regmap); 937 dev_err(&i2c->dev, "Failed to create regmap: %d\n", ret); 938 return ret; 939 } 940 941 i2c_set_clientdata(i2c, priv); 942 943 if (of_match_device(of_match_ptr(tas5086_dt_ids), dev)) { 944 struct device_node *of_node = dev->of_node; 945 gpio_nreset = of_get_named_gpio(of_node, "reset-gpio", 0); 946 } 947 948 if (gpio_is_valid(gpio_nreset)) 949 if (devm_gpio_request(dev, gpio_nreset, "TAS5086 Reset")) 950 gpio_nreset = -EINVAL; 951 952 priv->gpio_nreset = gpio_nreset; 953 954 ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies); 955 if (ret < 0) { 956 dev_err(dev, "Failed to enable regulators: %d\n", ret); 957 return ret; 958 } 959 960 tas5086_reset(priv); 961 962 /* The TAS5086 always returns 0x03 in its TAS5086_DEV_ID register */ 963 ret = regmap_read(priv->regmap, TAS5086_DEV_ID, &i); 964 if (ret == 0 && i != 0x3) { 965 dev_err(dev, 966 "Failed to identify TAS5086 codec (got %02x)\n", i); 967 ret = -ENODEV; 968 } 969 970 /* 971 * The chip has been identified, so we can turn off the power 972 * again until the dai link is set up. 973 */ 974 regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies); 975 976 if (ret == 0) 977 ret = devm_snd_soc_register_component(&i2c->dev, 978 &soc_component_dev_tas5086, 979 &tas5086_dai, 1); 980 981 return ret; 982 } 983 984 static void tas5086_i2c_remove(struct i2c_client *i2c) 985 {} 986 987 static struct i2c_driver tas5086_i2c_driver = { 988 .driver = { 989 .name = "tas5086", 990 .of_match_table = of_match_ptr(tas5086_dt_ids), 991 }, 992 .id_table = tas5086_i2c_id, 993 .probe_new = tas5086_i2c_probe, 994 .remove = tas5086_i2c_remove, 995 }; 996 997 module_i2c_driver(tas5086_i2c_driver); 998 999 MODULE_AUTHOR("Daniel Mack <zonque@gmail.com>"); 1000 MODULE_DESCRIPTION("Texas Instruments TAS5086 ALSA SoC Codec Driver"); 1001 MODULE_LICENSE("GPL"); 1002