1 /* 2 * TAS571x amplifier audio driver 3 * 4 * Copyright (C) 2015 Google, Inc. 5 * Copyright (c) 2013 Daniel Mack <zonque@gmail.com> 6 * 7 * TAS5721 support: 8 * Copyright (C) 2016 Petr Kulhavy, Barix AG <petr@barix.com> 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 */ 15 16 #include <linux/clk.h> 17 #include <linux/delay.h> 18 #include <linux/device.h> 19 #include <linux/gpio/consumer.h> 20 #include <linux/i2c.h> 21 #include <linux/init.h> 22 #include <linux/kernel.h> 23 #include <linux/module.h> 24 #include <linux/of_device.h> 25 #include <linux/regmap.h> 26 #include <linux/regulator/consumer.h> 27 #include <linux/stddef.h> 28 #include <sound/pcm_params.h> 29 #include <sound/soc.h> 30 #include <sound/tlv.h> 31 #include <asm/unaligned.h> 32 33 #include "tas571x.h" 34 35 #define TAS571X_MAX_SUPPLIES 6 36 37 struct tas571x_chip { 38 const char *const *supply_names; 39 int num_supply_names; 40 const struct snd_kcontrol_new *controls; 41 int num_controls; 42 const struct regmap_config *regmap_config; 43 int vol_reg_size; 44 }; 45 46 struct tas571x_private { 47 const struct tas571x_chip *chip; 48 struct regmap *regmap; 49 struct regulator_bulk_data supplies[TAS571X_MAX_SUPPLIES]; 50 struct clk *mclk; 51 unsigned int format; 52 struct gpio_desc *reset_gpio; 53 struct gpio_desc *pdn_gpio; 54 struct snd_soc_component_driver component_driver; 55 }; 56 57 static int tas571x_register_size(struct tas571x_private *priv, unsigned int reg) 58 { 59 switch (reg) { 60 case TAS571X_MVOL_REG: 61 case TAS571X_CH1_VOL_REG: 62 case TAS571X_CH2_VOL_REG: 63 return priv->chip->vol_reg_size; 64 case TAS571X_INPUT_MUX_REG: 65 case TAS571X_CH4_SRC_SELECT_REG: 66 case TAS571X_PWM_MUX_REG: 67 case TAS5717_CH1_RIGHT_CH_MIX_REG: 68 case TAS5717_CH1_LEFT_CH_MIX_REG: 69 case TAS5717_CH2_LEFT_CH_MIX_REG: 70 case TAS5717_CH2_RIGHT_CH_MIX_REG: 71 return 4; 72 default: 73 return 1; 74 } 75 } 76 77 static int tas571x_reg_write(void *context, unsigned int reg, 78 unsigned int value) 79 { 80 struct i2c_client *client = context; 81 struct tas571x_private *priv = i2c_get_clientdata(client); 82 unsigned int i, size; 83 uint8_t buf[5]; 84 int ret; 85 86 size = tas571x_register_size(priv, reg); 87 buf[0] = reg; 88 89 for (i = size; i >= 1; --i) { 90 buf[i] = value; 91 value >>= 8; 92 } 93 94 ret = i2c_master_send(client, buf, size + 1); 95 if (ret == size + 1) 96 return 0; 97 else if (ret < 0) 98 return ret; 99 else 100 return -EIO; 101 } 102 103 static int tas571x_reg_read(void *context, unsigned int reg, 104 unsigned int *value) 105 { 106 struct i2c_client *client = context; 107 struct tas571x_private *priv = i2c_get_clientdata(client); 108 uint8_t send_buf, recv_buf[4]; 109 struct i2c_msg msgs[2]; 110 unsigned int size; 111 unsigned int i; 112 int ret; 113 114 size = tas571x_register_size(priv, reg); 115 send_buf = reg; 116 117 msgs[0].addr = client->addr; 118 msgs[0].len = sizeof(send_buf); 119 msgs[0].buf = &send_buf; 120 msgs[0].flags = 0; 121 122 msgs[1].addr = client->addr; 123 msgs[1].len = size; 124 msgs[1].buf = recv_buf; 125 msgs[1].flags = I2C_M_RD; 126 127 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); 128 if (ret < 0) 129 return ret; 130 else if (ret != ARRAY_SIZE(msgs)) 131 return -EIO; 132 133 *value = 0; 134 135 for (i = 0; i < size; i++) { 136 *value <<= 8; 137 *value |= recv_buf[i]; 138 } 139 140 return 0; 141 } 142 143 /* 144 * register write for 8- and 20-byte registers 145 */ 146 static int tas571x_reg_write_multiword(struct i2c_client *client, 147 unsigned int reg, const long values[], size_t len) 148 { 149 size_t i; 150 uint8_t *buf, *p; 151 int ret; 152 size_t send_size = 1 + len * sizeof(uint32_t); 153 154 buf = kzalloc(send_size, GFP_KERNEL | GFP_DMA); 155 if (!buf) 156 return -ENOMEM; 157 buf[0] = reg; 158 159 for (i = 0, p = buf + 1; i < len; i++, p += sizeof(uint32_t)) 160 put_unaligned_be32(values[i], p); 161 162 ret = i2c_master_send(client, buf, send_size); 163 164 kfree(buf); 165 166 if (ret == send_size) 167 return 0; 168 else if (ret < 0) 169 return ret; 170 else 171 return -EIO; 172 } 173 174 /* 175 * register read for 8- and 20-byte registers 176 */ 177 static int tas571x_reg_read_multiword(struct i2c_client *client, 178 unsigned int reg, long values[], size_t len) 179 { 180 unsigned int i; 181 uint8_t send_buf; 182 uint8_t *recv_buf, *p; 183 struct i2c_msg msgs[2]; 184 unsigned int recv_size = len * sizeof(uint32_t); 185 int ret; 186 187 recv_buf = kzalloc(recv_size, GFP_KERNEL | GFP_DMA); 188 if (!recv_buf) 189 return -ENOMEM; 190 191 send_buf = reg; 192 193 msgs[0].addr = client->addr; 194 msgs[0].len = sizeof(send_buf); 195 msgs[0].buf = &send_buf; 196 msgs[0].flags = 0; 197 198 msgs[1].addr = client->addr; 199 msgs[1].len = recv_size; 200 msgs[1].buf = recv_buf; 201 msgs[1].flags = I2C_M_RD; 202 203 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); 204 if (ret < 0) 205 goto err_ret; 206 else if (ret != ARRAY_SIZE(msgs)) { 207 ret = -EIO; 208 goto err_ret; 209 } 210 211 for (i = 0, p = recv_buf; i < len; i++, p += sizeof(uint32_t)) 212 values[i] = get_unaligned_be32(p); 213 214 err_ret: 215 kfree(recv_buf); 216 return ret; 217 } 218 219 /* 220 * Integer array controls for setting biquad, mixer, DRC coefficients. 221 * According to the datasheet each coefficient is effectively 26bits, 222 * i.e. stored as 32bits, where bits [31:26] are ignored. 223 * TI's TAS57xx Graphical Development Environment tool however produces 224 * coefficients with more than 26 bits. For this reason we allow values 225 * in the full 32-bits reange. 226 * The coefficients are ordered as given in the TAS571x data sheet: 227 * b0, b1, b2, a1, a2 228 */ 229 230 static int tas571x_coefficient_info(struct snd_kcontrol *kcontrol, 231 struct snd_ctl_elem_info *uinfo) 232 { 233 int numcoef = kcontrol->private_value >> 16; 234 235 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 236 uinfo->count = numcoef; 237 uinfo->value.integer.min = 0; 238 uinfo->value.integer.max = 0xffffffff; 239 return 0; 240 } 241 242 static int tas571x_coefficient_get(struct snd_kcontrol *kcontrol, 243 struct snd_ctl_elem_value *ucontrol) 244 { 245 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 246 struct i2c_client *i2c = to_i2c_client(component->dev); 247 int numcoef = kcontrol->private_value >> 16; 248 int index = kcontrol->private_value & 0xffff; 249 250 return tas571x_reg_read_multiword(i2c, index, 251 ucontrol->value.integer.value, numcoef); 252 } 253 254 static int tas571x_coefficient_put(struct snd_kcontrol *kcontrol, 255 struct snd_ctl_elem_value *ucontrol) 256 { 257 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 258 struct i2c_client *i2c = to_i2c_client(component->dev); 259 int numcoef = kcontrol->private_value >> 16; 260 int index = kcontrol->private_value & 0xffff; 261 262 return tas571x_reg_write_multiword(i2c, index, 263 ucontrol->value.integer.value, numcoef); 264 } 265 266 static int tas571x_set_dai_fmt(struct snd_soc_dai *dai, unsigned int format) 267 { 268 struct tas571x_private *priv = snd_soc_component_get_drvdata(dai->component); 269 270 priv->format = format; 271 272 return 0; 273 } 274 275 static int tas571x_hw_params(struct snd_pcm_substream *substream, 276 struct snd_pcm_hw_params *params, 277 struct snd_soc_dai *dai) 278 { 279 struct tas571x_private *priv = snd_soc_component_get_drvdata(dai->component); 280 u32 val; 281 282 switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) { 283 case SND_SOC_DAIFMT_RIGHT_J: 284 val = 0x00; 285 break; 286 case SND_SOC_DAIFMT_I2S: 287 val = 0x03; 288 break; 289 case SND_SOC_DAIFMT_LEFT_J: 290 val = 0x06; 291 break; 292 default: 293 return -EINVAL; 294 } 295 296 if (params_width(params) >= 24) 297 val += 2; 298 else if (params_width(params) >= 20) 299 val += 1; 300 301 return regmap_update_bits(priv->regmap, TAS571X_SDI_REG, 302 TAS571X_SDI_FMT_MASK, val); 303 } 304 305 static int tas571x_mute(struct snd_soc_dai *dai, int mute) 306 { 307 struct snd_soc_component *component = dai->component; 308 u8 sysctl2; 309 int ret; 310 311 sysctl2 = mute ? TAS571X_SYS_CTRL_2_SDN_MASK : 0; 312 313 ret = snd_soc_component_update_bits(component, 314 TAS571X_SYS_CTRL_2_REG, 315 TAS571X_SYS_CTRL_2_SDN_MASK, 316 sysctl2); 317 usleep_range(1000, 2000); 318 319 return ret; 320 } 321 322 static int tas571x_set_bias_level(struct snd_soc_component *component, 323 enum snd_soc_bias_level level) 324 { 325 struct tas571x_private *priv = snd_soc_component_get_drvdata(component); 326 int ret; 327 328 switch (level) { 329 case SND_SOC_BIAS_ON: 330 break; 331 case SND_SOC_BIAS_PREPARE: 332 break; 333 case SND_SOC_BIAS_STANDBY: 334 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { 335 if (!IS_ERR(priv->mclk)) { 336 ret = clk_prepare_enable(priv->mclk); 337 if (ret) { 338 dev_err(component->dev, 339 "Failed to enable master clock: %d\n", 340 ret); 341 return ret; 342 } 343 } 344 } 345 break; 346 case SND_SOC_BIAS_OFF: 347 if (!IS_ERR(priv->mclk)) 348 clk_disable_unprepare(priv->mclk); 349 break; 350 } 351 352 return 0; 353 } 354 355 static const struct snd_soc_dai_ops tas571x_dai_ops = { 356 .set_fmt = tas571x_set_dai_fmt, 357 .hw_params = tas571x_hw_params, 358 .digital_mute = tas571x_mute, 359 }; 360 361 362 #define BIQUAD_COEFS(xname, reg) \ 363 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 364 .info = tas571x_coefficient_info, \ 365 .get = tas571x_coefficient_get,\ 366 .put = tas571x_coefficient_put, \ 367 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, \ 368 .private_value = reg | (5 << 16) } 369 370 static const char *const tas5711_supply_names[] = { 371 "AVDD", 372 "DVDD", 373 "PVDD_A", 374 "PVDD_B", 375 "PVDD_C", 376 "PVDD_D", 377 }; 378 379 static const DECLARE_TLV_DB_SCALE(tas5711_volume_tlv, -10350, 50, 1); 380 381 static const struct snd_kcontrol_new tas5711_controls[] = { 382 SOC_SINGLE_TLV("Master Volume", 383 TAS571X_MVOL_REG, 384 0, 0xff, 1, tas5711_volume_tlv), 385 SOC_DOUBLE_R_TLV("Speaker Volume", 386 TAS571X_CH1_VOL_REG, 387 TAS571X_CH2_VOL_REG, 388 0, 0xff, 1, tas5711_volume_tlv), 389 SOC_DOUBLE("Speaker Switch", 390 TAS571X_SOFT_MUTE_REG, 391 TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT, 392 1, 1), 393 }; 394 395 static const struct regmap_range tas571x_readonly_regs_range[] = { 396 regmap_reg_range(TAS571X_CLK_CTRL_REG, TAS571X_DEV_ID_REG), 397 }; 398 399 static const struct regmap_range tas571x_volatile_regs_range[] = { 400 regmap_reg_range(TAS571X_CLK_CTRL_REG, TAS571X_ERR_STATUS_REG), 401 regmap_reg_range(TAS571X_OSC_TRIM_REG, TAS571X_OSC_TRIM_REG), 402 }; 403 404 static const struct regmap_access_table tas571x_write_regs = { 405 .no_ranges = tas571x_readonly_regs_range, 406 .n_no_ranges = ARRAY_SIZE(tas571x_readonly_regs_range), 407 }; 408 409 static const struct regmap_access_table tas571x_volatile_regs = { 410 .yes_ranges = tas571x_volatile_regs_range, 411 .n_yes_ranges = ARRAY_SIZE(tas571x_volatile_regs_range), 412 413 }; 414 415 static const struct reg_default tas5711_reg_defaults[] = { 416 { 0x04, 0x05 }, 417 { 0x05, 0x40 }, 418 { 0x06, 0x00 }, 419 { 0x07, 0xff }, 420 { 0x08, 0x30 }, 421 { 0x09, 0x30 }, 422 { 0x1b, 0x82 }, 423 }; 424 425 static const struct regmap_config tas5711_regmap_config = { 426 .reg_bits = 8, 427 .val_bits = 32, 428 .max_register = 0xff, 429 .reg_read = tas571x_reg_read, 430 .reg_write = tas571x_reg_write, 431 .reg_defaults = tas5711_reg_defaults, 432 .num_reg_defaults = ARRAY_SIZE(tas5711_reg_defaults), 433 .cache_type = REGCACHE_RBTREE, 434 .wr_table = &tas571x_write_regs, 435 .volatile_table = &tas571x_volatile_regs, 436 }; 437 438 static const struct tas571x_chip tas5711_chip = { 439 .supply_names = tas5711_supply_names, 440 .num_supply_names = ARRAY_SIZE(tas5711_supply_names), 441 .controls = tas5711_controls, 442 .num_controls = ARRAY_SIZE(tas5711_controls), 443 .regmap_config = &tas5711_regmap_config, 444 .vol_reg_size = 1, 445 }; 446 447 static const char *const tas5717_supply_names[] = { 448 "AVDD", 449 "DVDD", 450 "HPVDD", 451 "PVDD_AB", 452 "PVDD_CD", 453 }; 454 455 static const DECLARE_TLV_DB_SCALE(tas5717_volume_tlv, -10375, 25, 0); 456 457 static const struct snd_kcontrol_new tas5717_controls[] = { 458 /* MVOL LSB is ignored - see comments in tas571x_i2c_probe() */ 459 SOC_SINGLE_TLV("Master Volume", 460 TAS571X_MVOL_REG, 1, 0x1ff, 1, 461 tas5717_volume_tlv), 462 SOC_DOUBLE_R_TLV("Speaker Volume", 463 TAS571X_CH1_VOL_REG, TAS571X_CH2_VOL_REG, 464 1, 0x1ff, 1, tas5717_volume_tlv), 465 SOC_DOUBLE("Speaker Switch", 466 TAS571X_SOFT_MUTE_REG, 467 TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT, 468 1, 1), 469 470 SOC_DOUBLE_R_RANGE("CH1 Mixer Volume", 471 TAS5717_CH1_LEFT_CH_MIX_REG, 472 TAS5717_CH1_RIGHT_CH_MIX_REG, 473 16, 0, 0x80, 0), 474 475 SOC_DOUBLE_R_RANGE("CH2 Mixer Volume", 476 TAS5717_CH2_LEFT_CH_MIX_REG, 477 TAS5717_CH2_RIGHT_CH_MIX_REG, 478 16, 0, 0x80, 0), 479 480 /* 481 * The biquads are named according to the register names. 482 * Please note that TI's TAS57xx Graphical Development Environment 483 * tool names them different. 484 */ 485 BIQUAD_COEFS("CH1 - Biquad 0", TAS5717_CH1_BQ0_REG), 486 BIQUAD_COEFS("CH1 - Biquad 1", TAS5717_CH1_BQ1_REG), 487 BIQUAD_COEFS("CH1 - Biquad 2", TAS5717_CH1_BQ2_REG), 488 BIQUAD_COEFS("CH1 - Biquad 3", TAS5717_CH1_BQ3_REG), 489 BIQUAD_COEFS("CH1 - Biquad 4", TAS5717_CH1_BQ4_REG), 490 BIQUAD_COEFS("CH1 - Biquad 5", TAS5717_CH1_BQ5_REG), 491 BIQUAD_COEFS("CH1 - Biquad 6", TAS5717_CH1_BQ6_REG), 492 BIQUAD_COEFS("CH1 - Biquad 7", TAS5717_CH1_BQ7_REG), 493 BIQUAD_COEFS("CH1 - Biquad 8", TAS5717_CH1_BQ8_REG), 494 BIQUAD_COEFS("CH1 - Biquad 9", TAS5717_CH1_BQ9_REG), 495 BIQUAD_COEFS("CH1 - Biquad 10", TAS5717_CH1_BQ10_REG), 496 BIQUAD_COEFS("CH1 - Biquad 11", TAS5717_CH1_BQ11_REG), 497 498 BIQUAD_COEFS("CH2 - Biquad 0", TAS5717_CH2_BQ0_REG), 499 BIQUAD_COEFS("CH2 - Biquad 1", TAS5717_CH2_BQ1_REG), 500 BIQUAD_COEFS("CH2 - Biquad 2", TAS5717_CH2_BQ2_REG), 501 BIQUAD_COEFS("CH2 - Biquad 3", TAS5717_CH2_BQ3_REG), 502 BIQUAD_COEFS("CH2 - Biquad 4", TAS5717_CH2_BQ4_REG), 503 BIQUAD_COEFS("CH2 - Biquad 5", TAS5717_CH2_BQ5_REG), 504 BIQUAD_COEFS("CH2 - Biquad 6", TAS5717_CH2_BQ6_REG), 505 BIQUAD_COEFS("CH2 - Biquad 7", TAS5717_CH2_BQ7_REG), 506 BIQUAD_COEFS("CH2 - Biquad 8", TAS5717_CH2_BQ8_REG), 507 BIQUAD_COEFS("CH2 - Biquad 9", TAS5717_CH2_BQ9_REG), 508 BIQUAD_COEFS("CH2 - Biquad 10", TAS5717_CH2_BQ10_REG), 509 BIQUAD_COEFS("CH2 - Biquad 11", TAS5717_CH2_BQ11_REG), 510 511 BIQUAD_COEFS("CH3 - Biquad 0", TAS5717_CH3_BQ0_REG), 512 BIQUAD_COEFS("CH3 - Biquad 1", TAS5717_CH3_BQ1_REG), 513 514 BIQUAD_COEFS("CH4 - Biquad 0", TAS5717_CH4_BQ0_REG), 515 BIQUAD_COEFS("CH4 - Biquad 1", TAS5717_CH4_BQ1_REG), 516 }; 517 518 static const struct reg_default tas5717_reg_defaults[] = { 519 { 0x04, 0x05 }, 520 { 0x05, 0x40 }, 521 { 0x06, 0x00 }, 522 { 0x07, 0x03ff }, 523 { 0x08, 0x00c0 }, 524 { 0x09, 0x00c0 }, 525 { 0x1b, 0x82 }, 526 { TAS5717_CH1_RIGHT_CH_MIX_REG, 0x0 }, 527 { TAS5717_CH1_LEFT_CH_MIX_REG, 0x800000}, 528 { TAS5717_CH2_LEFT_CH_MIX_REG, 0x0 }, 529 { TAS5717_CH2_RIGHT_CH_MIX_REG, 0x800000}, 530 }; 531 532 static const struct regmap_config tas5717_regmap_config = { 533 .reg_bits = 8, 534 .val_bits = 32, 535 .max_register = 0xff, 536 .reg_read = tas571x_reg_read, 537 .reg_write = tas571x_reg_write, 538 .reg_defaults = tas5717_reg_defaults, 539 .num_reg_defaults = ARRAY_SIZE(tas5717_reg_defaults), 540 .cache_type = REGCACHE_RBTREE, 541 .wr_table = &tas571x_write_regs, 542 .volatile_table = &tas571x_volatile_regs, 543 }; 544 545 /* This entry is reused for tas5719 as the software interface is identical. */ 546 static const struct tas571x_chip tas5717_chip = { 547 .supply_names = tas5717_supply_names, 548 .num_supply_names = ARRAY_SIZE(tas5717_supply_names), 549 .controls = tas5717_controls, 550 .num_controls = ARRAY_SIZE(tas5717_controls), 551 .regmap_config = &tas5717_regmap_config, 552 .vol_reg_size = 2, 553 }; 554 555 static const char *const tas5721_supply_names[] = { 556 "AVDD", 557 "DVDD", 558 "DRVDD", 559 "PVDD", 560 }; 561 562 static const struct snd_kcontrol_new tas5721_controls[] = { 563 SOC_SINGLE_TLV("Master Volume", 564 TAS571X_MVOL_REG, 565 0, 0xff, 1, tas5711_volume_tlv), 566 SOC_DOUBLE_R_TLV("Speaker Volume", 567 TAS571X_CH1_VOL_REG, 568 TAS571X_CH2_VOL_REG, 569 0, 0xff, 1, tas5711_volume_tlv), 570 SOC_DOUBLE("Speaker Switch", 571 TAS571X_SOFT_MUTE_REG, 572 TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT, 573 1, 1), 574 }; 575 576 static const struct reg_default tas5721_reg_defaults[] = { 577 {TAS571X_CLK_CTRL_REG, 0x6c}, 578 {TAS571X_DEV_ID_REG, 0x00}, 579 {TAS571X_ERR_STATUS_REG, 0x00}, 580 {TAS571X_SYS_CTRL_1_REG, 0xa0}, 581 {TAS571X_SDI_REG, 0x05}, 582 {TAS571X_SYS_CTRL_2_REG, 0x40}, 583 {TAS571X_SOFT_MUTE_REG, 0x00}, 584 {TAS571X_MVOL_REG, 0xff}, 585 {TAS571X_CH1_VOL_REG, 0x30}, 586 {TAS571X_CH2_VOL_REG, 0x30}, 587 {TAS571X_CH3_VOL_REG, 0x30}, 588 {TAS571X_VOL_CFG_REG, 0x91}, 589 {TAS571X_MODULATION_LIMIT_REG, 0x02}, 590 {TAS571X_IC_DELAY_CH1_REG, 0xac}, 591 {TAS571X_IC_DELAY_CH2_REG, 0x54}, 592 {TAS571X_IC_DELAY_CH3_REG, 0xac}, 593 {TAS571X_IC_DELAY_CH4_REG, 0x54}, 594 {TAS571X_PWM_CH_SDN_GROUP_REG, 0x30}, 595 {TAS571X_START_STOP_PERIOD_REG, 0x0f}, 596 {TAS571X_OSC_TRIM_REG, 0x82}, 597 {TAS571X_BKND_ERR_REG, 0x02}, 598 {TAS571X_INPUT_MUX_REG, 0x17772}, 599 {TAS571X_CH4_SRC_SELECT_REG, 0x4303}, 600 {TAS571X_PWM_MUX_REG, 0x1021345}, 601 }; 602 603 static const struct regmap_config tas5721_regmap_config = { 604 .reg_bits = 8, 605 .val_bits = 32, 606 .max_register = 0xff, 607 .reg_read = tas571x_reg_read, 608 .reg_write = tas571x_reg_write, 609 .reg_defaults = tas5721_reg_defaults, 610 .num_reg_defaults = ARRAY_SIZE(tas5721_reg_defaults), 611 .cache_type = REGCACHE_RBTREE, 612 .wr_table = &tas571x_write_regs, 613 .volatile_table = &tas571x_volatile_regs, 614 }; 615 616 617 static const struct tas571x_chip tas5721_chip = { 618 .supply_names = tas5721_supply_names, 619 .num_supply_names = ARRAY_SIZE(tas5721_supply_names), 620 .controls = tas5711_controls, 621 .num_controls = ARRAY_SIZE(tas5711_controls), 622 .regmap_config = &tas5721_regmap_config, 623 .vol_reg_size = 1, 624 }; 625 626 static const struct snd_soc_dapm_widget tas571x_dapm_widgets[] = { 627 SND_SOC_DAPM_DAC("DACL", NULL, SND_SOC_NOPM, 0, 0), 628 SND_SOC_DAPM_DAC("DACR", NULL, SND_SOC_NOPM, 0, 0), 629 630 SND_SOC_DAPM_OUTPUT("OUT_A"), 631 SND_SOC_DAPM_OUTPUT("OUT_B"), 632 SND_SOC_DAPM_OUTPUT("OUT_C"), 633 SND_SOC_DAPM_OUTPUT("OUT_D"), 634 }; 635 636 static const struct snd_soc_dapm_route tas571x_dapm_routes[] = { 637 { "DACL", NULL, "Playback" }, 638 { "DACR", NULL, "Playback" }, 639 640 { "OUT_A", NULL, "DACL" }, 641 { "OUT_B", NULL, "DACL" }, 642 { "OUT_C", NULL, "DACR" }, 643 { "OUT_D", NULL, "DACR" }, 644 }; 645 646 static const struct snd_soc_component_driver tas571x_component = { 647 .set_bias_level = tas571x_set_bias_level, 648 .dapm_widgets = tas571x_dapm_widgets, 649 .num_dapm_widgets = ARRAY_SIZE(tas571x_dapm_widgets), 650 .dapm_routes = tas571x_dapm_routes, 651 .num_dapm_routes = ARRAY_SIZE(tas571x_dapm_routes), 652 .use_pmdown_time = 1, 653 .endianness = 1, 654 .non_legacy_dai_naming = 1, 655 }; 656 657 static struct snd_soc_dai_driver tas571x_dai = { 658 .name = "tas571x-hifi", 659 .playback = { 660 .stream_name = "Playback", 661 .channels_min = 2, 662 .channels_max = 2, 663 .rates = SNDRV_PCM_RATE_8000_48000, 664 .formats = SNDRV_PCM_FMTBIT_S32_LE | 665 SNDRV_PCM_FMTBIT_S24_LE | 666 SNDRV_PCM_FMTBIT_S16_LE, 667 }, 668 .ops = &tas571x_dai_ops, 669 }; 670 671 static const struct of_device_id tas571x_of_match[]; 672 673 static int tas571x_i2c_probe(struct i2c_client *client, 674 const struct i2c_device_id *id) 675 { 676 struct tas571x_private *priv; 677 struct device *dev = &client->dev; 678 const struct of_device_id *of_id; 679 int i, ret; 680 681 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 682 if (!priv) 683 return -ENOMEM; 684 i2c_set_clientdata(client, priv); 685 686 of_id = of_match_device(tas571x_of_match, dev); 687 if (of_id) 688 priv->chip = of_id->data; 689 else 690 priv->chip = (void *) id->driver_data; 691 692 priv->mclk = devm_clk_get(dev, "mclk"); 693 if (IS_ERR(priv->mclk) && PTR_ERR(priv->mclk) != -ENOENT) { 694 dev_err(dev, "Failed to request mclk: %ld\n", 695 PTR_ERR(priv->mclk)); 696 return PTR_ERR(priv->mclk); 697 } 698 699 if (WARN_ON(priv->chip->num_supply_names > TAS571X_MAX_SUPPLIES)) 700 return -EINVAL; 701 for (i = 0; i < priv->chip->num_supply_names; i++) 702 priv->supplies[i].supply = priv->chip->supply_names[i]; 703 704 ret = devm_regulator_bulk_get(dev, priv->chip->num_supply_names, 705 priv->supplies); 706 if (ret) { 707 dev_err(dev, "Failed to get supplies: %d\n", ret); 708 return ret; 709 } 710 ret = regulator_bulk_enable(priv->chip->num_supply_names, 711 priv->supplies); 712 if (ret) { 713 dev_err(dev, "Failed to enable supplies: %d\n", ret); 714 return ret; 715 } 716 717 priv->regmap = devm_regmap_init(dev, NULL, client, 718 priv->chip->regmap_config); 719 if (IS_ERR(priv->regmap)) 720 return PTR_ERR(priv->regmap); 721 722 priv->pdn_gpio = devm_gpiod_get_optional(dev, "pdn", GPIOD_OUT_LOW); 723 if (IS_ERR(priv->pdn_gpio)) { 724 dev_err(dev, "error requesting pdn_gpio: %ld\n", 725 PTR_ERR(priv->pdn_gpio)); 726 return PTR_ERR(priv->pdn_gpio); 727 } 728 729 priv->reset_gpio = devm_gpiod_get_optional(dev, "reset", 730 GPIOD_OUT_HIGH); 731 if (IS_ERR(priv->reset_gpio)) { 732 dev_err(dev, "error requesting reset_gpio: %ld\n", 733 PTR_ERR(priv->reset_gpio)); 734 return PTR_ERR(priv->reset_gpio); 735 } else if (priv->reset_gpio) { 736 /* pulse the active low reset line for ~100us */ 737 usleep_range(100, 200); 738 gpiod_set_value(priv->reset_gpio, 0); 739 usleep_range(13500, 20000); 740 } 741 742 ret = regmap_write(priv->regmap, TAS571X_OSC_TRIM_REG, 0); 743 if (ret) 744 return ret; 745 746 usleep_range(50000, 60000); 747 748 memcpy(&priv->component_driver, &tas571x_component, sizeof(priv->component_driver)); 749 priv->component_driver.controls = priv->chip->controls; 750 priv->component_driver.num_controls = priv->chip->num_controls; 751 752 if (priv->chip->vol_reg_size == 2) { 753 /* 754 * The master volume defaults to 0x3ff (mute), but we ignore 755 * (zero) the LSB because the hardware step size is 0.125 dB 756 * and TLV_DB_SCALE_ITEM has a resolution of 0.01 dB. 757 */ 758 ret = regmap_update_bits(priv->regmap, TAS571X_MVOL_REG, 1, 0); 759 if (ret) 760 return ret; 761 } 762 763 return devm_snd_soc_register_component(&client->dev, 764 &priv->component_driver, 765 &tas571x_dai, 1); 766 } 767 768 static int tas571x_i2c_remove(struct i2c_client *client) 769 { 770 struct tas571x_private *priv = i2c_get_clientdata(client); 771 772 regulator_bulk_disable(priv->chip->num_supply_names, priv->supplies); 773 774 return 0; 775 } 776 777 static const struct of_device_id tas571x_of_match[] = { 778 { .compatible = "ti,tas5711", .data = &tas5711_chip, }, 779 { .compatible = "ti,tas5717", .data = &tas5717_chip, }, 780 { .compatible = "ti,tas5719", .data = &tas5717_chip, }, 781 { .compatible = "ti,tas5721", .data = &tas5721_chip, }, 782 { } 783 }; 784 MODULE_DEVICE_TABLE(of, tas571x_of_match); 785 786 static const struct i2c_device_id tas571x_i2c_id[] = { 787 { "tas5711", (kernel_ulong_t) &tas5711_chip }, 788 { "tas5717", (kernel_ulong_t) &tas5717_chip }, 789 { "tas5719", (kernel_ulong_t) &tas5717_chip }, 790 { "tas5721", (kernel_ulong_t) &tas5721_chip }, 791 { } 792 }; 793 MODULE_DEVICE_TABLE(i2c, tas571x_i2c_id); 794 795 static struct i2c_driver tas571x_i2c_driver = { 796 .driver = { 797 .name = "tas571x", 798 .of_match_table = of_match_ptr(tas571x_of_match), 799 }, 800 .probe = tas571x_i2c_probe, 801 .remove = tas571x_i2c_remove, 802 .id_table = tas571x_i2c_id, 803 }; 804 module_i2c_driver(tas571x_i2c_driver); 805 806 MODULE_DESCRIPTION("ASoC TAS571x driver"); 807 MODULE_AUTHOR("Kevin Cernekee <cernekee@chromium.org>"); 808 MODULE_LICENSE("GPL"); 809