1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * ALSA SoC Texas Instruments TLV320DAC33 codec driver 4 * 5 * Author: Peter Ujfalusi <peter.ujfalusi@ti.com> 6 * 7 * Copyright: (C) 2009 Nokia Corporation 8 */ 9 10 #include <linux/module.h> 11 #include <linux/moduleparam.h> 12 #include <linux/init.h> 13 #include <linux/delay.h> 14 #include <linux/pm.h> 15 #include <linux/i2c.h> 16 #include <linux/interrupt.h> 17 #include <linux/gpio.h> 18 #include <linux/regulator/consumer.h> 19 #include <linux/slab.h> 20 #include <sound/core.h> 21 #include <sound/pcm.h> 22 #include <sound/pcm_params.h> 23 #include <sound/soc.h> 24 #include <sound/initval.h> 25 #include <sound/tlv.h> 26 27 #include <sound/tlv320dac33-plat.h> 28 #include "tlv320dac33.h" 29 30 /* 31 * The internal FIFO is 24576 bytes long 32 * It can be configured to hold 16bit or 24bit samples 33 * In 16bit configuration the FIFO can hold 6144 stereo samples 34 * In 24bit configuration the FIFO can hold 4096 stereo samples 35 */ 36 #define DAC33_FIFO_SIZE_16BIT 6144 37 #define DAC33_FIFO_SIZE_24BIT 4096 38 #define DAC33_MODE7_MARGIN 10 /* Safety margin for FIFO in Mode7 */ 39 40 #define BURST_BASEFREQ_HZ 49152000 41 42 #define SAMPLES_TO_US(rate, samples) \ 43 (1000000000 / (((rate) * 1000) / (samples))) 44 45 #define US_TO_SAMPLES(rate, us) \ 46 ((rate) / (1000000 / ((us) < 1000000 ? (us) : 1000000))) 47 48 #define UTHR_FROM_PERIOD_SIZE(samples, playrate, burstrate) \ 49 (((samples)*5000) / (((burstrate)*5000) / ((burstrate) - (playrate)))) 50 51 static void dac33_calculate_times(struct snd_pcm_substream *substream, 52 struct snd_soc_component *component); 53 static int dac33_prepare_chip(struct snd_pcm_substream *substream, 54 struct snd_soc_component *component); 55 56 enum dac33_state { 57 DAC33_IDLE = 0, 58 DAC33_PREFILL, 59 DAC33_PLAYBACK, 60 DAC33_FLUSH, 61 }; 62 63 enum dac33_fifo_modes { 64 DAC33_FIFO_BYPASS = 0, 65 DAC33_FIFO_MODE1, 66 DAC33_FIFO_MODE7, 67 DAC33_FIFO_LAST_MODE, 68 }; 69 70 #define DAC33_NUM_SUPPLIES 3 71 static const char *dac33_supply_names[DAC33_NUM_SUPPLIES] = { 72 "AVDD", 73 "DVDD", 74 "IOVDD", 75 }; 76 77 struct tlv320dac33_priv { 78 struct mutex mutex; 79 struct work_struct work; 80 struct snd_soc_component *component; 81 struct regulator_bulk_data supplies[DAC33_NUM_SUPPLIES]; 82 struct snd_pcm_substream *substream; 83 int power_gpio; 84 int chip_power; 85 int irq; 86 unsigned int refclk; 87 88 unsigned int alarm_threshold; /* set to be half of LATENCY_TIME_MS */ 89 enum dac33_fifo_modes fifo_mode;/* FIFO mode selection */ 90 unsigned int fifo_size; /* Size of the FIFO in samples */ 91 unsigned int nsample; /* burst read amount from host */ 92 int mode1_latency; /* latency caused by the i2c writes in 93 * us */ 94 u8 burst_bclkdiv; /* BCLK divider value in burst mode */ 95 u8 *reg_cache; 96 unsigned int burst_rate; /* Interface speed in Burst modes */ 97 98 int keep_bclk; /* Keep the BCLK continuously running 99 * in FIFO modes */ 100 spinlock_t lock; 101 unsigned long long t_stamp1; /* Time stamp for FIFO modes to */ 102 unsigned long long t_stamp2; /* calculate the FIFO caused delay */ 103 104 unsigned int mode1_us_burst; /* Time to burst read n number of 105 * samples */ 106 unsigned int mode7_us_to_lthr; /* Time to reach lthr from uthr */ 107 108 unsigned int uthr; 109 110 enum dac33_state state; 111 struct i2c_client *i2c; 112 }; 113 114 static const u8 dac33_reg[DAC33_CACHEREGNUM] = { 115 0x00, 0x00, 0x00, 0x00, /* 0x00 - 0x03 */ 116 0x00, 0x00, 0x00, 0x00, /* 0x04 - 0x07 */ 117 0x00, 0x00, 0x00, 0x00, /* 0x08 - 0x0b */ 118 0x00, 0x00, 0x00, 0x00, /* 0x0c - 0x0f */ 119 0x00, 0x00, 0x00, 0x00, /* 0x10 - 0x13 */ 120 0x00, 0x00, 0x00, 0x00, /* 0x14 - 0x17 */ 121 0x00, 0x00, 0x00, 0x00, /* 0x18 - 0x1b */ 122 0x00, 0x00, 0x00, 0x00, /* 0x1c - 0x1f */ 123 0x00, 0x00, 0x00, 0x00, /* 0x20 - 0x23 */ 124 0x00, 0x00, 0x00, 0x00, /* 0x24 - 0x27 */ 125 0x00, 0x00, 0x00, 0x00, /* 0x28 - 0x2b */ 126 0x00, 0x00, 0x00, 0x80, /* 0x2c - 0x2f */ 127 0x80, 0x00, 0x00, 0x00, /* 0x30 - 0x33 */ 128 0x00, 0x00, 0x00, 0x00, /* 0x34 - 0x37 */ 129 0x00, 0x00, /* 0x38 - 0x39 */ 130 /* Registers 0x3a - 0x3f are reserved */ 131 0x00, 0x00, /* 0x3a - 0x3b */ 132 0x00, 0x00, 0x00, 0x00, /* 0x3c - 0x3f */ 133 134 0x00, 0x00, 0x00, 0x00, /* 0x40 - 0x43 */ 135 0x00, 0x80, /* 0x44 - 0x45 */ 136 /* Registers 0x46 - 0x47 are reserved */ 137 0x80, 0x80, /* 0x46 - 0x47 */ 138 139 0x80, 0x00, 0x00, /* 0x48 - 0x4a */ 140 /* Registers 0x4b - 0x7c are reserved */ 141 0x00, /* 0x4b */ 142 0x00, 0x00, 0x00, 0x00, /* 0x4c - 0x4f */ 143 0x00, 0x00, 0x00, 0x00, /* 0x50 - 0x53 */ 144 0x00, 0x00, 0x00, 0x00, /* 0x54 - 0x57 */ 145 0x00, 0x00, 0x00, 0x00, /* 0x58 - 0x5b */ 146 0x00, 0x00, 0x00, 0x00, /* 0x5c - 0x5f */ 147 0x00, 0x00, 0x00, 0x00, /* 0x60 - 0x63 */ 148 0x00, 0x00, 0x00, 0x00, /* 0x64 - 0x67 */ 149 0x00, 0x00, 0x00, 0x00, /* 0x68 - 0x6b */ 150 0x00, 0x00, 0x00, 0x00, /* 0x6c - 0x6f */ 151 0x00, 0x00, 0x00, 0x00, /* 0x70 - 0x73 */ 152 0x00, 0x00, 0x00, 0x00, /* 0x74 - 0x77 */ 153 0x00, 0x00, 0x00, 0x00, /* 0x78 - 0x7b */ 154 0x00, /* 0x7c */ 155 156 0xda, 0x33, 0x03, /* 0x7d - 0x7f */ 157 }; 158 159 /* Register read and write */ 160 static inline unsigned int dac33_read_reg_cache(struct snd_soc_component *component, 161 unsigned reg) 162 { 163 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 164 u8 *cache = dac33->reg_cache; 165 if (reg >= DAC33_CACHEREGNUM) 166 return 0; 167 168 return cache[reg]; 169 } 170 171 static inline void dac33_write_reg_cache(struct snd_soc_component *component, 172 u8 reg, u8 value) 173 { 174 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 175 u8 *cache = dac33->reg_cache; 176 if (reg >= DAC33_CACHEREGNUM) 177 return; 178 179 cache[reg] = value; 180 } 181 182 static int dac33_read(struct snd_soc_component *component, unsigned int reg, 183 u8 *value) 184 { 185 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 186 int val, ret = 0; 187 188 *value = reg & 0xff; 189 190 /* If powered off, return the cached value */ 191 if (dac33->chip_power) { 192 val = i2c_smbus_read_byte_data(dac33->i2c, value[0]); 193 if (val < 0) { 194 dev_err(component->dev, "Read failed (%d)\n", val); 195 value[0] = dac33_read_reg_cache(component, reg); 196 ret = val; 197 } else { 198 value[0] = val; 199 dac33_write_reg_cache(component, reg, val); 200 } 201 } else { 202 value[0] = dac33_read_reg_cache(component, reg); 203 } 204 205 return ret; 206 } 207 208 static int dac33_write(struct snd_soc_component *component, unsigned int reg, 209 unsigned int value) 210 { 211 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 212 u8 data[2]; 213 int ret = 0; 214 215 /* 216 * data is 217 * D15..D8 dac33 register offset 218 * D7...D0 register data 219 */ 220 data[0] = reg & 0xff; 221 data[1] = value & 0xff; 222 223 dac33_write_reg_cache(component, data[0], data[1]); 224 if (dac33->chip_power) { 225 ret = i2c_master_send(dac33->i2c, data, 2); 226 if (ret != 2) 227 dev_err(component->dev, "Write failed (%d)\n", ret); 228 else 229 ret = 0; 230 } 231 232 return ret; 233 } 234 235 static int dac33_write_locked(struct snd_soc_component *component, unsigned int reg, 236 unsigned int value) 237 { 238 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 239 int ret; 240 241 mutex_lock(&dac33->mutex); 242 ret = dac33_write(component, reg, value); 243 mutex_unlock(&dac33->mutex); 244 245 return ret; 246 } 247 248 #define DAC33_I2C_ADDR_AUTOINC 0x80 249 static int dac33_write16(struct snd_soc_component *component, unsigned int reg, 250 unsigned int value) 251 { 252 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 253 u8 data[3]; 254 int ret = 0; 255 256 /* 257 * data is 258 * D23..D16 dac33 register offset 259 * D15..D8 register data MSB 260 * D7...D0 register data LSB 261 */ 262 data[0] = reg & 0xff; 263 data[1] = (value >> 8) & 0xff; 264 data[2] = value & 0xff; 265 266 dac33_write_reg_cache(component, data[0], data[1]); 267 dac33_write_reg_cache(component, data[0] + 1, data[2]); 268 269 if (dac33->chip_power) { 270 /* We need to set autoincrement mode for 16 bit writes */ 271 data[0] |= DAC33_I2C_ADDR_AUTOINC; 272 ret = i2c_master_send(dac33->i2c, data, 3); 273 if (ret != 3) 274 dev_err(component->dev, "Write failed (%d)\n", ret); 275 else 276 ret = 0; 277 } 278 279 return ret; 280 } 281 282 static void dac33_init_chip(struct snd_soc_component *component) 283 { 284 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 285 286 if (unlikely(!dac33->chip_power)) 287 return; 288 289 /* A : DAC sample rate Fsref/1.5 */ 290 dac33_write(component, DAC33_DAC_CTRL_A, DAC33_DACRATE(0)); 291 /* B : DAC src=normal, not muted */ 292 dac33_write(component, DAC33_DAC_CTRL_B, DAC33_DACSRCR_RIGHT | 293 DAC33_DACSRCL_LEFT); 294 /* C : (defaults) */ 295 dac33_write(component, DAC33_DAC_CTRL_C, 0x00); 296 297 /* 73 : volume soft stepping control, 298 clock source = internal osc (?) */ 299 dac33_write(component, DAC33_ANA_VOL_SOFT_STEP_CTRL, DAC33_VOLCLKEN); 300 301 /* Restore only selected registers (gains mostly) */ 302 dac33_write(component, DAC33_LDAC_DIG_VOL_CTRL, 303 dac33_read_reg_cache(component, DAC33_LDAC_DIG_VOL_CTRL)); 304 dac33_write(component, DAC33_RDAC_DIG_VOL_CTRL, 305 dac33_read_reg_cache(component, DAC33_RDAC_DIG_VOL_CTRL)); 306 307 dac33_write(component, DAC33_LINEL_TO_LLO_VOL, 308 dac33_read_reg_cache(component, DAC33_LINEL_TO_LLO_VOL)); 309 dac33_write(component, DAC33_LINER_TO_RLO_VOL, 310 dac33_read_reg_cache(component, DAC33_LINER_TO_RLO_VOL)); 311 312 dac33_write(component, DAC33_OUT_AMP_CTRL, 313 dac33_read_reg_cache(component, DAC33_OUT_AMP_CTRL)); 314 315 dac33_write(component, DAC33_LDAC_PWR_CTRL, 316 dac33_read_reg_cache(component, DAC33_LDAC_PWR_CTRL)); 317 dac33_write(component, DAC33_RDAC_PWR_CTRL, 318 dac33_read_reg_cache(component, DAC33_RDAC_PWR_CTRL)); 319 } 320 321 static inline int dac33_read_id(struct snd_soc_component *component) 322 { 323 int i, ret = 0; 324 u8 reg; 325 326 for (i = 0; i < 3; i++) { 327 ret = dac33_read(component, DAC33_DEVICE_ID_MSB + i, ®); 328 if (ret < 0) 329 break; 330 } 331 332 return ret; 333 } 334 335 static inline void dac33_soft_power(struct snd_soc_component *component, int power) 336 { 337 u8 reg; 338 339 reg = dac33_read_reg_cache(component, DAC33_PWR_CTRL); 340 if (power) 341 reg |= DAC33_PDNALLB; 342 else 343 reg &= ~(DAC33_PDNALLB | DAC33_OSCPDNB | 344 DAC33_DACRPDNB | DAC33_DACLPDNB); 345 dac33_write(component, DAC33_PWR_CTRL, reg); 346 } 347 348 static inline void dac33_disable_digital(struct snd_soc_component *component) 349 { 350 u8 reg; 351 352 /* Stop the DAI clock */ 353 reg = dac33_read_reg_cache(component, DAC33_SER_AUDIOIF_CTRL_B); 354 reg &= ~DAC33_BCLKON; 355 dac33_write(component, DAC33_SER_AUDIOIF_CTRL_B, reg); 356 357 /* Power down the Oscillator, and DACs */ 358 reg = dac33_read_reg_cache(component, DAC33_PWR_CTRL); 359 reg &= ~(DAC33_OSCPDNB | DAC33_DACRPDNB | DAC33_DACLPDNB); 360 dac33_write(component, DAC33_PWR_CTRL, reg); 361 } 362 363 static int dac33_hard_power(struct snd_soc_component *component, int power) 364 { 365 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 366 int ret = 0; 367 368 mutex_lock(&dac33->mutex); 369 370 /* Safety check */ 371 if (unlikely(power == dac33->chip_power)) { 372 dev_dbg(component->dev, "Trying to set the same power state: %s\n", 373 power ? "ON" : "OFF"); 374 goto exit; 375 } 376 377 if (power) { 378 ret = regulator_bulk_enable(ARRAY_SIZE(dac33->supplies), 379 dac33->supplies); 380 if (ret != 0) { 381 dev_err(component->dev, 382 "Failed to enable supplies: %d\n", ret); 383 goto exit; 384 } 385 386 if (dac33->power_gpio >= 0) 387 gpio_set_value(dac33->power_gpio, 1); 388 389 dac33->chip_power = 1; 390 } else { 391 dac33_soft_power(component, 0); 392 if (dac33->power_gpio >= 0) 393 gpio_set_value(dac33->power_gpio, 0); 394 395 ret = regulator_bulk_disable(ARRAY_SIZE(dac33->supplies), 396 dac33->supplies); 397 if (ret != 0) { 398 dev_err(component->dev, 399 "Failed to disable supplies: %d\n", ret); 400 goto exit; 401 } 402 403 dac33->chip_power = 0; 404 } 405 406 exit: 407 mutex_unlock(&dac33->mutex); 408 return ret; 409 } 410 411 static int dac33_playback_event(struct snd_soc_dapm_widget *w, 412 struct snd_kcontrol *kcontrol, int event) 413 { 414 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); 415 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 416 417 switch (event) { 418 case SND_SOC_DAPM_PRE_PMU: 419 if (likely(dac33->substream)) { 420 dac33_calculate_times(dac33->substream, component); 421 dac33_prepare_chip(dac33->substream, component); 422 } 423 break; 424 case SND_SOC_DAPM_POST_PMD: 425 dac33_disable_digital(component); 426 break; 427 } 428 return 0; 429 } 430 431 static int dac33_get_fifo_mode(struct snd_kcontrol *kcontrol, 432 struct snd_ctl_elem_value *ucontrol) 433 { 434 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 435 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 436 437 ucontrol->value.enumerated.item[0] = dac33->fifo_mode; 438 439 return 0; 440 } 441 442 static int dac33_set_fifo_mode(struct snd_kcontrol *kcontrol, 443 struct snd_ctl_elem_value *ucontrol) 444 { 445 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 446 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 447 int ret = 0; 448 449 if (dac33->fifo_mode == ucontrol->value.enumerated.item[0]) 450 return 0; 451 /* Do not allow changes while stream is running*/ 452 if (snd_soc_component_active(component)) 453 return -EPERM; 454 455 if (ucontrol->value.enumerated.item[0] >= DAC33_FIFO_LAST_MODE) 456 ret = -EINVAL; 457 else 458 dac33->fifo_mode = ucontrol->value.enumerated.item[0]; 459 460 return ret; 461 } 462 463 /* Codec operation modes */ 464 static const char *dac33_fifo_mode_texts[] = { 465 "Bypass", "Mode 1", "Mode 7" 466 }; 467 468 static SOC_ENUM_SINGLE_EXT_DECL(dac33_fifo_mode_enum, dac33_fifo_mode_texts); 469 470 /* L/R Line Output Gain */ 471 static const char *lr_lineout_gain_texts[] = { 472 "Line -12dB DAC 0dB", "Line -6dB DAC 6dB", 473 "Line 0dB DAC 12dB", "Line 6dB DAC 18dB", 474 }; 475 476 static SOC_ENUM_SINGLE_DECL(l_lineout_gain_enum, 477 DAC33_LDAC_PWR_CTRL, 0, 478 lr_lineout_gain_texts); 479 480 static SOC_ENUM_SINGLE_DECL(r_lineout_gain_enum, 481 DAC33_RDAC_PWR_CTRL, 0, 482 lr_lineout_gain_texts); 483 484 /* 485 * DACL/R digital volume control: 486 * from 0 dB to -63.5 in 0.5 dB steps 487 * Need to be inverted later on: 488 * 0x00 == 0 dB 489 * 0x7f == -63.5 dB 490 */ 491 static DECLARE_TLV_DB_SCALE(dac_digivol_tlv, -6350, 50, 0); 492 493 static const struct snd_kcontrol_new dac33_snd_controls[] = { 494 SOC_DOUBLE_R_TLV("DAC Digital Playback Volume", 495 DAC33_LDAC_DIG_VOL_CTRL, DAC33_RDAC_DIG_VOL_CTRL, 496 0, 0x7f, 1, dac_digivol_tlv), 497 SOC_DOUBLE_R("DAC Digital Playback Switch", 498 DAC33_LDAC_DIG_VOL_CTRL, DAC33_RDAC_DIG_VOL_CTRL, 7, 1, 1), 499 SOC_DOUBLE_R("Line to Line Out Volume", 500 DAC33_LINEL_TO_LLO_VOL, DAC33_LINER_TO_RLO_VOL, 0, 127, 1), 501 SOC_ENUM("Left Line Output Gain", l_lineout_gain_enum), 502 SOC_ENUM("Right Line Output Gain", r_lineout_gain_enum), 503 }; 504 505 static const struct snd_kcontrol_new dac33_mode_snd_controls[] = { 506 SOC_ENUM_EXT("FIFO Mode", dac33_fifo_mode_enum, 507 dac33_get_fifo_mode, dac33_set_fifo_mode), 508 }; 509 510 /* Analog bypass */ 511 static const struct snd_kcontrol_new dac33_dapm_abypassl_control = 512 SOC_DAPM_SINGLE("Switch", DAC33_LINEL_TO_LLO_VOL, 7, 1, 1); 513 514 static const struct snd_kcontrol_new dac33_dapm_abypassr_control = 515 SOC_DAPM_SINGLE("Switch", DAC33_LINER_TO_RLO_VOL, 7, 1, 1); 516 517 /* LOP L/R invert selection */ 518 static const char *dac33_lr_lom_texts[] = {"DAC", "LOP"}; 519 520 static SOC_ENUM_SINGLE_DECL(dac33_left_lom_enum, 521 DAC33_OUT_AMP_CTRL, 3, 522 dac33_lr_lom_texts); 523 524 static const struct snd_kcontrol_new dac33_dapm_left_lom_control = 525 SOC_DAPM_ENUM("Route", dac33_left_lom_enum); 526 527 static SOC_ENUM_SINGLE_DECL(dac33_right_lom_enum, 528 DAC33_OUT_AMP_CTRL, 2, 529 dac33_lr_lom_texts); 530 531 static const struct snd_kcontrol_new dac33_dapm_right_lom_control = 532 SOC_DAPM_ENUM("Route", dac33_right_lom_enum); 533 534 static const struct snd_soc_dapm_widget dac33_dapm_widgets[] = { 535 SND_SOC_DAPM_OUTPUT("LEFT_LO"), 536 SND_SOC_DAPM_OUTPUT("RIGHT_LO"), 537 538 SND_SOC_DAPM_INPUT("LINEL"), 539 SND_SOC_DAPM_INPUT("LINER"), 540 541 SND_SOC_DAPM_DAC("DACL", "Left Playback", SND_SOC_NOPM, 0, 0), 542 SND_SOC_DAPM_DAC("DACR", "Right Playback", SND_SOC_NOPM, 0, 0), 543 544 /* Analog bypass */ 545 SND_SOC_DAPM_SWITCH("Analog Left Bypass", SND_SOC_NOPM, 0, 0, 546 &dac33_dapm_abypassl_control), 547 SND_SOC_DAPM_SWITCH("Analog Right Bypass", SND_SOC_NOPM, 0, 0, 548 &dac33_dapm_abypassr_control), 549 550 SND_SOC_DAPM_MUX("Left LOM Inverted From", SND_SOC_NOPM, 0, 0, 551 &dac33_dapm_left_lom_control), 552 SND_SOC_DAPM_MUX("Right LOM Inverted From", SND_SOC_NOPM, 0, 0, 553 &dac33_dapm_right_lom_control), 554 /* 555 * For DAPM path, when only the anlog bypass path is enabled, and the 556 * LOP inverted from the corresponding DAC side. 557 * This is needed, so we can attach the DAC power supply in this case. 558 */ 559 SND_SOC_DAPM_PGA("Left Bypass PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 560 SND_SOC_DAPM_PGA("Right Bypass PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 561 562 SND_SOC_DAPM_REG(snd_soc_dapm_mixer, "Output Left Amplifier", 563 DAC33_OUT_AMP_PWR_CTRL, 6, 3, 3, 0), 564 SND_SOC_DAPM_REG(snd_soc_dapm_mixer, "Output Right Amplifier", 565 DAC33_OUT_AMP_PWR_CTRL, 4, 3, 3, 0), 566 567 SND_SOC_DAPM_SUPPLY("Left DAC Power", 568 DAC33_LDAC_PWR_CTRL, 2, 0, NULL, 0), 569 SND_SOC_DAPM_SUPPLY("Right DAC Power", 570 DAC33_RDAC_PWR_CTRL, 2, 0, NULL, 0), 571 572 SND_SOC_DAPM_SUPPLY("Codec Power", 573 DAC33_PWR_CTRL, 4, 0, NULL, 0), 574 575 SND_SOC_DAPM_PRE("Pre Playback", dac33_playback_event), 576 SND_SOC_DAPM_POST("Post Playback", dac33_playback_event), 577 }; 578 579 static const struct snd_soc_dapm_route audio_map[] = { 580 /* Analog bypass */ 581 {"Analog Left Bypass", "Switch", "LINEL"}, 582 {"Analog Right Bypass", "Switch", "LINER"}, 583 584 {"Output Left Amplifier", NULL, "DACL"}, 585 {"Output Right Amplifier", NULL, "DACR"}, 586 587 {"Left Bypass PGA", NULL, "Analog Left Bypass"}, 588 {"Right Bypass PGA", NULL, "Analog Right Bypass"}, 589 590 {"Left LOM Inverted From", "DAC", "Left Bypass PGA"}, 591 {"Right LOM Inverted From", "DAC", "Right Bypass PGA"}, 592 {"Left LOM Inverted From", "LOP", "Analog Left Bypass"}, 593 {"Right LOM Inverted From", "LOP", "Analog Right Bypass"}, 594 595 {"Output Left Amplifier", NULL, "Left LOM Inverted From"}, 596 {"Output Right Amplifier", NULL, "Right LOM Inverted From"}, 597 598 {"DACL", NULL, "Left DAC Power"}, 599 {"DACR", NULL, "Right DAC Power"}, 600 601 {"Left Bypass PGA", NULL, "Left DAC Power"}, 602 {"Right Bypass PGA", NULL, "Right DAC Power"}, 603 604 /* output */ 605 {"LEFT_LO", NULL, "Output Left Amplifier"}, 606 {"RIGHT_LO", NULL, "Output Right Amplifier"}, 607 608 {"LEFT_LO", NULL, "Codec Power"}, 609 {"RIGHT_LO", NULL, "Codec Power"}, 610 }; 611 612 static int dac33_set_bias_level(struct snd_soc_component *component, 613 enum snd_soc_bias_level level) 614 { 615 int ret; 616 617 switch (level) { 618 case SND_SOC_BIAS_ON: 619 break; 620 case SND_SOC_BIAS_PREPARE: 621 break; 622 case SND_SOC_BIAS_STANDBY: 623 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { 624 /* Coming from OFF, switch on the component */ 625 ret = dac33_hard_power(component, 1); 626 if (ret != 0) 627 return ret; 628 629 dac33_init_chip(component); 630 } 631 break; 632 case SND_SOC_BIAS_OFF: 633 /* Do not power off, when the component is already off */ 634 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) 635 return 0; 636 ret = dac33_hard_power(component, 0); 637 if (ret != 0) 638 return ret; 639 break; 640 } 641 642 return 0; 643 } 644 645 static inline void dac33_prefill_handler(struct tlv320dac33_priv *dac33) 646 { 647 struct snd_soc_component *component = dac33->component; 648 unsigned int delay; 649 unsigned long flags; 650 651 switch (dac33->fifo_mode) { 652 case DAC33_FIFO_MODE1: 653 dac33_write16(component, DAC33_NSAMPLE_MSB, 654 DAC33_THRREG(dac33->nsample)); 655 656 /* Take the timestamps */ 657 spin_lock_irqsave(&dac33->lock, flags); 658 dac33->t_stamp2 = ktime_to_us(ktime_get()); 659 dac33->t_stamp1 = dac33->t_stamp2; 660 spin_unlock_irqrestore(&dac33->lock, flags); 661 662 dac33_write16(component, DAC33_PREFILL_MSB, 663 DAC33_THRREG(dac33->alarm_threshold)); 664 /* Enable Alarm Threshold IRQ with a delay */ 665 delay = SAMPLES_TO_US(dac33->burst_rate, 666 dac33->alarm_threshold) + 1000; 667 usleep_range(delay, delay + 500); 668 dac33_write(component, DAC33_FIFO_IRQ_MASK, DAC33_MAT); 669 break; 670 case DAC33_FIFO_MODE7: 671 /* Take the timestamp */ 672 spin_lock_irqsave(&dac33->lock, flags); 673 dac33->t_stamp1 = ktime_to_us(ktime_get()); 674 /* Move back the timestamp with drain time */ 675 dac33->t_stamp1 -= dac33->mode7_us_to_lthr; 676 spin_unlock_irqrestore(&dac33->lock, flags); 677 678 dac33_write16(component, DAC33_PREFILL_MSB, 679 DAC33_THRREG(DAC33_MODE7_MARGIN)); 680 681 /* Enable Upper Threshold IRQ */ 682 dac33_write(component, DAC33_FIFO_IRQ_MASK, DAC33_MUT); 683 break; 684 default: 685 dev_warn(component->dev, "Unhandled FIFO mode: %d\n", 686 dac33->fifo_mode); 687 break; 688 } 689 } 690 691 static inline void dac33_playback_handler(struct tlv320dac33_priv *dac33) 692 { 693 struct snd_soc_component *component = dac33->component; 694 unsigned long flags; 695 696 switch (dac33->fifo_mode) { 697 case DAC33_FIFO_MODE1: 698 /* Take the timestamp */ 699 spin_lock_irqsave(&dac33->lock, flags); 700 dac33->t_stamp2 = ktime_to_us(ktime_get()); 701 spin_unlock_irqrestore(&dac33->lock, flags); 702 703 dac33_write16(component, DAC33_NSAMPLE_MSB, 704 DAC33_THRREG(dac33->nsample)); 705 break; 706 case DAC33_FIFO_MODE7: 707 /* At the moment we are not using interrupts in mode7 */ 708 break; 709 default: 710 dev_warn(component->dev, "Unhandled FIFO mode: %d\n", 711 dac33->fifo_mode); 712 break; 713 } 714 } 715 716 static void dac33_work(struct work_struct *work) 717 { 718 struct snd_soc_component *component; 719 struct tlv320dac33_priv *dac33; 720 u8 reg; 721 722 dac33 = container_of(work, struct tlv320dac33_priv, work); 723 component = dac33->component; 724 725 mutex_lock(&dac33->mutex); 726 switch (dac33->state) { 727 case DAC33_PREFILL: 728 dac33->state = DAC33_PLAYBACK; 729 dac33_prefill_handler(dac33); 730 break; 731 case DAC33_PLAYBACK: 732 dac33_playback_handler(dac33); 733 break; 734 case DAC33_IDLE: 735 break; 736 case DAC33_FLUSH: 737 dac33->state = DAC33_IDLE; 738 /* Mask all interrupts from dac33 */ 739 dac33_write(component, DAC33_FIFO_IRQ_MASK, 0); 740 741 /* flush fifo */ 742 reg = dac33_read_reg_cache(component, DAC33_FIFO_CTRL_A); 743 reg |= DAC33_FIFOFLUSH; 744 dac33_write(component, DAC33_FIFO_CTRL_A, reg); 745 break; 746 } 747 mutex_unlock(&dac33->mutex); 748 } 749 750 static irqreturn_t dac33_interrupt_handler(int irq, void *dev) 751 { 752 struct snd_soc_component *component = dev; 753 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 754 unsigned long flags; 755 756 spin_lock_irqsave(&dac33->lock, flags); 757 dac33->t_stamp1 = ktime_to_us(ktime_get()); 758 spin_unlock_irqrestore(&dac33->lock, flags); 759 760 /* Do not schedule the workqueue in Mode7 */ 761 if (dac33->fifo_mode != DAC33_FIFO_MODE7) 762 schedule_work(&dac33->work); 763 764 return IRQ_HANDLED; 765 } 766 767 static void dac33_oscwait(struct snd_soc_component *component) 768 { 769 int timeout = 60; 770 u8 reg; 771 772 do { 773 usleep_range(1000, 2000); 774 dac33_read(component, DAC33_INT_OSC_STATUS, ®); 775 } while (((reg & 0x03) != DAC33_OSCSTATUS_NORMAL) && timeout--); 776 if ((reg & 0x03) != DAC33_OSCSTATUS_NORMAL) 777 dev_err(component->dev, 778 "internal oscillator calibration failed\n"); 779 } 780 781 static int dac33_startup(struct snd_pcm_substream *substream, 782 struct snd_soc_dai *dai) 783 { 784 struct snd_soc_component *component = dai->component; 785 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 786 787 /* Stream started, save the substream pointer */ 788 dac33->substream = substream; 789 790 return 0; 791 } 792 793 static void dac33_shutdown(struct snd_pcm_substream *substream, 794 struct snd_soc_dai *dai) 795 { 796 struct snd_soc_component *component = dai->component; 797 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 798 799 dac33->substream = NULL; 800 } 801 802 #define CALC_BURST_RATE(bclkdiv, bclk_per_sample) \ 803 (BURST_BASEFREQ_HZ / bclkdiv / bclk_per_sample) 804 static int dac33_hw_params(struct snd_pcm_substream *substream, 805 struct snd_pcm_hw_params *params, 806 struct snd_soc_dai *dai) 807 { 808 struct snd_soc_component *component = dai->component; 809 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 810 811 /* Check parameters for validity */ 812 switch (params_rate(params)) { 813 case 44100: 814 case 48000: 815 break; 816 default: 817 dev_err(component->dev, "unsupported rate %d\n", 818 params_rate(params)); 819 return -EINVAL; 820 } 821 822 switch (params_width(params)) { 823 case 16: 824 dac33->fifo_size = DAC33_FIFO_SIZE_16BIT; 825 dac33->burst_rate = CALC_BURST_RATE(dac33->burst_bclkdiv, 32); 826 break; 827 case 32: 828 dac33->fifo_size = DAC33_FIFO_SIZE_24BIT; 829 dac33->burst_rate = CALC_BURST_RATE(dac33->burst_bclkdiv, 64); 830 break; 831 default: 832 dev_err(component->dev, "unsupported width %d\n", 833 params_width(params)); 834 return -EINVAL; 835 } 836 837 return 0; 838 } 839 840 #define CALC_OSCSET(rate, refclk) ( \ 841 ((((rate * 10000) / refclk) * 4096) + 7000) / 10000) 842 #define CALC_RATIOSET(rate, refclk) ( \ 843 ((((refclk * 100000) / rate) * 16384) + 50000) / 100000) 844 845 /* 846 * tlv320dac33 is strict on the sequence of the register writes, if the register 847 * writes happens in different order, than dac33 might end up in unknown state. 848 * Use the known, working sequence of register writes to initialize the dac33. 849 */ 850 static int dac33_prepare_chip(struct snd_pcm_substream *substream, 851 struct snd_soc_component *component) 852 { 853 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 854 unsigned int oscset, ratioset, pwr_ctrl, reg_tmp; 855 u8 aictrl_a, aictrl_b, fifoctrl_a; 856 857 switch (substream->runtime->rate) { 858 case 44100: 859 case 48000: 860 oscset = CALC_OSCSET(substream->runtime->rate, dac33->refclk); 861 ratioset = CALC_RATIOSET(substream->runtime->rate, 862 dac33->refclk); 863 break; 864 default: 865 dev_err(component->dev, "unsupported rate %d\n", 866 substream->runtime->rate); 867 return -EINVAL; 868 } 869 870 871 aictrl_a = dac33_read_reg_cache(component, DAC33_SER_AUDIOIF_CTRL_A); 872 aictrl_a &= ~(DAC33_NCYCL_MASK | DAC33_WLEN_MASK); 873 /* Read FIFO control A, and clear FIFO flush bit */ 874 fifoctrl_a = dac33_read_reg_cache(component, DAC33_FIFO_CTRL_A); 875 fifoctrl_a &= ~DAC33_FIFOFLUSH; 876 877 fifoctrl_a &= ~DAC33_WIDTH; 878 switch (substream->runtime->format) { 879 case SNDRV_PCM_FORMAT_S16_LE: 880 aictrl_a |= (DAC33_NCYCL_16 | DAC33_WLEN_16); 881 fifoctrl_a |= DAC33_WIDTH; 882 break; 883 case SNDRV_PCM_FORMAT_S32_LE: 884 aictrl_a |= (DAC33_NCYCL_32 | DAC33_WLEN_24); 885 break; 886 default: 887 dev_err(component->dev, "unsupported format %d\n", 888 substream->runtime->format); 889 return -EINVAL; 890 } 891 892 mutex_lock(&dac33->mutex); 893 894 if (!dac33->chip_power) { 895 /* 896 * Chip is not powered yet. 897 * Do the init in the dac33_set_bias_level later. 898 */ 899 mutex_unlock(&dac33->mutex); 900 return 0; 901 } 902 903 dac33_soft_power(component, 0); 904 dac33_soft_power(component, 1); 905 906 reg_tmp = dac33_read_reg_cache(component, DAC33_INT_OSC_CTRL); 907 dac33_write(component, DAC33_INT_OSC_CTRL, reg_tmp); 908 909 /* Write registers 0x08 and 0x09 (MSB, LSB) */ 910 dac33_write16(component, DAC33_INT_OSC_FREQ_RAT_A, oscset); 911 912 /* OSC calibration time */ 913 dac33_write(component, DAC33_CALIB_TIME, 96); 914 915 /* adjustment treshold & step */ 916 dac33_write(component, DAC33_INT_OSC_CTRL_B, DAC33_ADJTHRSHLD(2) | 917 DAC33_ADJSTEP(1)); 918 919 /* div=4 / gain=1 / div */ 920 dac33_write(component, DAC33_INT_OSC_CTRL_C, DAC33_REFDIV(4)); 921 922 pwr_ctrl = dac33_read_reg_cache(component, DAC33_PWR_CTRL); 923 pwr_ctrl |= DAC33_OSCPDNB | DAC33_DACRPDNB | DAC33_DACLPDNB; 924 dac33_write(component, DAC33_PWR_CTRL, pwr_ctrl); 925 926 dac33_oscwait(component); 927 928 if (dac33->fifo_mode) { 929 /* Generic for all FIFO modes */ 930 /* 50-51 : ASRC Control registers */ 931 dac33_write(component, DAC33_ASRC_CTRL_A, DAC33_SRCLKDIV(1)); 932 dac33_write(component, DAC33_ASRC_CTRL_B, 1); /* ??? */ 933 934 /* Write registers 0x34 and 0x35 (MSB, LSB) */ 935 dac33_write16(component, DAC33_SRC_REF_CLK_RATIO_A, ratioset); 936 937 /* Set interrupts to high active */ 938 dac33_write(component, DAC33_INTP_CTRL_A, DAC33_INTPM_AHIGH); 939 } else { 940 /* FIFO bypass mode */ 941 /* 50-51 : ASRC Control registers */ 942 dac33_write(component, DAC33_ASRC_CTRL_A, DAC33_SRCBYP); 943 dac33_write(component, DAC33_ASRC_CTRL_B, 0); /* ??? */ 944 } 945 946 /* Interrupt behaviour configuration */ 947 switch (dac33->fifo_mode) { 948 case DAC33_FIFO_MODE1: 949 dac33_write(component, DAC33_FIFO_IRQ_MODE_B, 950 DAC33_ATM(DAC33_FIFO_IRQ_MODE_LEVEL)); 951 break; 952 case DAC33_FIFO_MODE7: 953 dac33_write(component, DAC33_FIFO_IRQ_MODE_A, 954 DAC33_UTM(DAC33_FIFO_IRQ_MODE_LEVEL)); 955 break; 956 default: 957 /* in FIFO bypass mode, the interrupts are not used */ 958 break; 959 } 960 961 aictrl_b = dac33_read_reg_cache(component, DAC33_SER_AUDIOIF_CTRL_B); 962 963 switch (dac33->fifo_mode) { 964 case DAC33_FIFO_MODE1: 965 /* 966 * For mode1: 967 * Disable the FIFO bypass (Enable the use of FIFO) 968 * Select nSample mode 969 * BCLK is only running when data is needed by DAC33 970 */ 971 fifoctrl_a &= ~DAC33_FBYPAS; 972 fifoctrl_a &= ~DAC33_FAUTO; 973 if (dac33->keep_bclk) 974 aictrl_b |= DAC33_BCLKON; 975 else 976 aictrl_b &= ~DAC33_BCLKON; 977 break; 978 case DAC33_FIFO_MODE7: 979 /* 980 * For mode1: 981 * Disable the FIFO bypass (Enable the use of FIFO) 982 * Select Threshold mode 983 * BCLK is only running when data is needed by DAC33 984 */ 985 fifoctrl_a &= ~DAC33_FBYPAS; 986 fifoctrl_a |= DAC33_FAUTO; 987 if (dac33->keep_bclk) 988 aictrl_b |= DAC33_BCLKON; 989 else 990 aictrl_b &= ~DAC33_BCLKON; 991 break; 992 default: 993 /* 994 * For FIFO bypass mode: 995 * Enable the FIFO bypass (Disable the FIFO use) 996 * Set the BCLK as continuous 997 */ 998 fifoctrl_a |= DAC33_FBYPAS; 999 aictrl_b |= DAC33_BCLKON; 1000 break; 1001 } 1002 1003 dac33_write(component, DAC33_FIFO_CTRL_A, fifoctrl_a); 1004 dac33_write(component, DAC33_SER_AUDIOIF_CTRL_A, aictrl_a); 1005 dac33_write(component, DAC33_SER_AUDIOIF_CTRL_B, aictrl_b); 1006 1007 /* 1008 * BCLK divide ratio 1009 * 0: 1.5 1010 * 1: 1 1011 * 2: 2 1012 * ... 1013 * 254: 254 1014 * 255: 255 1015 */ 1016 if (dac33->fifo_mode) 1017 dac33_write(component, DAC33_SER_AUDIOIF_CTRL_C, 1018 dac33->burst_bclkdiv); 1019 else 1020 if (substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE) 1021 dac33_write(component, DAC33_SER_AUDIOIF_CTRL_C, 32); 1022 else 1023 dac33_write(component, DAC33_SER_AUDIOIF_CTRL_C, 16); 1024 1025 switch (dac33->fifo_mode) { 1026 case DAC33_FIFO_MODE1: 1027 dac33_write16(component, DAC33_ATHR_MSB, 1028 DAC33_THRREG(dac33->alarm_threshold)); 1029 break; 1030 case DAC33_FIFO_MODE7: 1031 /* 1032 * Configure the threshold levels, and leave 10 sample space 1033 * at the bottom, and also at the top of the FIFO 1034 */ 1035 dac33_write16(component, DAC33_UTHR_MSB, DAC33_THRREG(dac33->uthr)); 1036 dac33_write16(component, DAC33_LTHR_MSB, 1037 DAC33_THRREG(DAC33_MODE7_MARGIN)); 1038 break; 1039 default: 1040 break; 1041 } 1042 1043 mutex_unlock(&dac33->mutex); 1044 1045 return 0; 1046 } 1047 1048 static void dac33_calculate_times(struct snd_pcm_substream *substream, 1049 struct snd_soc_component *component) 1050 { 1051 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 1052 unsigned int period_size = substream->runtime->period_size; 1053 unsigned int rate = substream->runtime->rate; 1054 unsigned int nsample_limit; 1055 1056 /* In bypass mode we don't need to calculate */ 1057 if (!dac33->fifo_mode) 1058 return; 1059 1060 switch (dac33->fifo_mode) { 1061 case DAC33_FIFO_MODE1: 1062 /* Number of samples under i2c latency */ 1063 dac33->alarm_threshold = US_TO_SAMPLES(rate, 1064 dac33->mode1_latency); 1065 nsample_limit = dac33->fifo_size - dac33->alarm_threshold; 1066 1067 if (period_size <= dac33->alarm_threshold) 1068 /* 1069 * Configure nSamaple to number of periods, 1070 * which covers the latency requironment. 1071 */ 1072 dac33->nsample = period_size * 1073 ((dac33->alarm_threshold / period_size) + 1074 ((dac33->alarm_threshold % period_size) ? 1075 1 : 0)); 1076 else if (period_size > nsample_limit) 1077 dac33->nsample = nsample_limit; 1078 else 1079 dac33->nsample = period_size; 1080 1081 dac33->mode1_us_burst = SAMPLES_TO_US(dac33->burst_rate, 1082 dac33->nsample); 1083 dac33->t_stamp1 = 0; 1084 dac33->t_stamp2 = 0; 1085 break; 1086 case DAC33_FIFO_MODE7: 1087 dac33->uthr = UTHR_FROM_PERIOD_SIZE(period_size, rate, 1088 dac33->burst_rate) + 9; 1089 if (dac33->uthr > (dac33->fifo_size - DAC33_MODE7_MARGIN)) 1090 dac33->uthr = dac33->fifo_size - DAC33_MODE7_MARGIN; 1091 if (dac33->uthr < (DAC33_MODE7_MARGIN + 10)) 1092 dac33->uthr = (DAC33_MODE7_MARGIN + 10); 1093 1094 dac33->mode7_us_to_lthr = 1095 SAMPLES_TO_US(substream->runtime->rate, 1096 dac33->uthr - DAC33_MODE7_MARGIN + 1); 1097 dac33->t_stamp1 = 0; 1098 break; 1099 default: 1100 break; 1101 } 1102 1103 } 1104 1105 static int dac33_pcm_trigger(struct snd_pcm_substream *substream, int cmd, 1106 struct snd_soc_dai *dai) 1107 { 1108 struct snd_soc_component *component = dai->component; 1109 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 1110 int ret = 0; 1111 1112 switch (cmd) { 1113 case SNDRV_PCM_TRIGGER_START: 1114 case SNDRV_PCM_TRIGGER_RESUME: 1115 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 1116 if (dac33->fifo_mode) { 1117 dac33->state = DAC33_PREFILL; 1118 schedule_work(&dac33->work); 1119 } 1120 break; 1121 case SNDRV_PCM_TRIGGER_STOP: 1122 case SNDRV_PCM_TRIGGER_SUSPEND: 1123 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 1124 if (dac33->fifo_mode) { 1125 dac33->state = DAC33_FLUSH; 1126 schedule_work(&dac33->work); 1127 } 1128 break; 1129 default: 1130 ret = -EINVAL; 1131 } 1132 1133 return ret; 1134 } 1135 1136 static snd_pcm_sframes_t dac33_dai_delay( 1137 struct snd_pcm_substream *substream, 1138 struct snd_soc_dai *dai) 1139 { 1140 struct snd_soc_component *component = dai->component; 1141 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 1142 unsigned long long t0, t1, t_now; 1143 unsigned int time_delta, uthr; 1144 int samples_out, samples_in, samples; 1145 snd_pcm_sframes_t delay = 0; 1146 unsigned long flags; 1147 1148 switch (dac33->fifo_mode) { 1149 case DAC33_FIFO_BYPASS: 1150 break; 1151 case DAC33_FIFO_MODE1: 1152 spin_lock_irqsave(&dac33->lock, flags); 1153 t0 = dac33->t_stamp1; 1154 t1 = dac33->t_stamp2; 1155 spin_unlock_irqrestore(&dac33->lock, flags); 1156 t_now = ktime_to_us(ktime_get()); 1157 1158 /* We have not started to fill the FIFO yet, delay is 0 */ 1159 if (!t1) 1160 goto out; 1161 1162 if (t0 > t1) { 1163 /* 1164 * Phase 1: 1165 * After Alarm threshold, and before nSample write 1166 */ 1167 time_delta = t_now - t0; 1168 samples_out = time_delta ? US_TO_SAMPLES( 1169 substream->runtime->rate, 1170 time_delta) : 0; 1171 1172 if (likely(dac33->alarm_threshold > samples_out)) 1173 delay = dac33->alarm_threshold - samples_out; 1174 else 1175 delay = 0; 1176 } else if ((t_now - t1) <= dac33->mode1_us_burst) { 1177 /* 1178 * Phase 2: 1179 * After nSample write (during burst operation) 1180 */ 1181 time_delta = t_now - t0; 1182 samples_out = time_delta ? US_TO_SAMPLES( 1183 substream->runtime->rate, 1184 time_delta) : 0; 1185 1186 time_delta = t_now - t1; 1187 samples_in = time_delta ? US_TO_SAMPLES( 1188 dac33->burst_rate, 1189 time_delta) : 0; 1190 1191 samples = dac33->alarm_threshold; 1192 samples += (samples_in - samples_out); 1193 1194 if (likely(samples > 0)) 1195 delay = samples; 1196 else 1197 delay = 0; 1198 } else { 1199 /* 1200 * Phase 3: 1201 * After burst operation, before next alarm threshold 1202 */ 1203 time_delta = t_now - t0; 1204 samples_out = time_delta ? US_TO_SAMPLES( 1205 substream->runtime->rate, 1206 time_delta) : 0; 1207 1208 samples_in = dac33->nsample; 1209 samples = dac33->alarm_threshold; 1210 samples += (samples_in - samples_out); 1211 1212 if (likely(samples > 0)) 1213 delay = samples > dac33->fifo_size ? 1214 dac33->fifo_size : samples; 1215 else 1216 delay = 0; 1217 } 1218 break; 1219 case DAC33_FIFO_MODE7: 1220 spin_lock_irqsave(&dac33->lock, flags); 1221 t0 = dac33->t_stamp1; 1222 uthr = dac33->uthr; 1223 spin_unlock_irqrestore(&dac33->lock, flags); 1224 t_now = ktime_to_us(ktime_get()); 1225 1226 /* We have not started to fill the FIFO yet, delay is 0 */ 1227 if (!t0) 1228 goto out; 1229 1230 if (t_now <= t0) { 1231 /* 1232 * Either the timestamps are messed or equal. Report 1233 * maximum delay 1234 */ 1235 delay = uthr; 1236 goto out; 1237 } 1238 1239 time_delta = t_now - t0; 1240 if (time_delta <= dac33->mode7_us_to_lthr) { 1241 /* 1242 * Phase 1: 1243 * After burst (draining phase) 1244 */ 1245 samples_out = US_TO_SAMPLES( 1246 substream->runtime->rate, 1247 time_delta); 1248 1249 if (likely(uthr > samples_out)) 1250 delay = uthr - samples_out; 1251 else 1252 delay = 0; 1253 } else { 1254 /* 1255 * Phase 2: 1256 * During burst operation 1257 */ 1258 time_delta = time_delta - dac33->mode7_us_to_lthr; 1259 1260 samples_out = US_TO_SAMPLES( 1261 substream->runtime->rate, 1262 time_delta); 1263 samples_in = US_TO_SAMPLES( 1264 dac33->burst_rate, 1265 time_delta); 1266 delay = DAC33_MODE7_MARGIN + samples_in - samples_out; 1267 1268 if (unlikely(delay > uthr)) 1269 delay = uthr; 1270 } 1271 break; 1272 default: 1273 dev_warn(component->dev, "Unhandled FIFO mode: %d\n", 1274 dac33->fifo_mode); 1275 break; 1276 } 1277 out: 1278 return delay; 1279 } 1280 1281 static int dac33_set_dai_sysclk(struct snd_soc_dai *codec_dai, 1282 int clk_id, unsigned int freq, int dir) 1283 { 1284 struct snd_soc_component *component = codec_dai->component; 1285 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 1286 u8 ioc_reg, asrcb_reg; 1287 1288 ioc_reg = dac33_read_reg_cache(component, DAC33_INT_OSC_CTRL); 1289 asrcb_reg = dac33_read_reg_cache(component, DAC33_ASRC_CTRL_B); 1290 switch (clk_id) { 1291 case TLV320DAC33_MCLK: 1292 ioc_reg |= DAC33_REFSEL; 1293 asrcb_reg |= DAC33_SRCREFSEL; 1294 break; 1295 case TLV320DAC33_SLEEPCLK: 1296 ioc_reg &= ~DAC33_REFSEL; 1297 asrcb_reg &= ~DAC33_SRCREFSEL; 1298 break; 1299 default: 1300 dev_err(component->dev, "Invalid clock ID (%d)\n", clk_id); 1301 break; 1302 } 1303 dac33->refclk = freq; 1304 1305 dac33_write_reg_cache(component, DAC33_INT_OSC_CTRL, ioc_reg); 1306 dac33_write_reg_cache(component, DAC33_ASRC_CTRL_B, asrcb_reg); 1307 1308 return 0; 1309 } 1310 1311 static int dac33_set_dai_fmt(struct snd_soc_dai *codec_dai, 1312 unsigned int fmt) 1313 { 1314 struct snd_soc_component *component = codec_dai->component; 1315 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 1316 u8 aictrl_a, aictrl_b; 1317 1318 aictrl_a = dac33_read_reg_cache(component, DAC33_SER_AUDIOIF_CTRL_A); 1319 aictrl_b = dac33_read_reg_cache(component, DAC33_SER_AUDIOIF_CTRL_B); 1320 /* set master/slave audio interface */ 1321 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 1322 case SND_SOC_DAIFMT_CBM_CFM: 1323 /* Codec Master */ 1324 aictrl_a |= (DAC33_MSBCLK | DAC33_MSWCLK); 1325 break; 1326 case SND_SOC_DAIFMT_CBS_CFS: 1327 /* Codec Slave */ 1328 if (dac33->fifo_mode) { 1329 dev_err(component->dev, "FIFO mode requires master mode\n"); 1330 return -EINVAL; 1331 } else 1332 aictrl_a &= ~(DAC33_MSBCLK | DAC33_MSWCLK); 1333 break; 1334 default: 1335 return -EINVAL; 1336 } 1337 1338 aictrl_a &= ~DAC33_AFMT_MASK; 1339 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 1340 case SND_SOC_DAIFMT_I2S: 1341 aictrl_a |= DAC33_AFMT_I2S; 1342 break; 1343 case SND_SOC_DAIFMT_DSP_A: 1344 aictrl_a |= DAC33_AFMT_DSP; 1345 aictrl_b &= ~DAC33_DATA_DELAY_MASK; 1346 aictrl_b |= DAC33_DATA_DELAY(0); 1347 break; 1348 case SND_SOC_DAIFMT_RIGHT_J: 1349 aictrl_a |= DAC33_AFMT_RIGHT_J; 1350 break; 1351 case SND_SOC_DAIFMT_LEFT_J: 1352 aictrl_a |= DAC33_AFMT_LEFT_J; 1353 break; 1354 default: 1355 dev_err(component->dev, "Unsupported format (%u)\n", 1356 fmt & SND_SOC_DAIFMT_FORMAT_MASK); 1357 return -EINVAL; 1358 } 1359 1360 dac33_write_reg_cache(component, DAC33_SER_AUDIOIF_CTRL_A, aictrl_a); 1361 dac33_write_reg_cache(component, DAC33_SER_AUDIOIF_CTRL_B, aictrl_b); 1362 1363 return 0; 1364 } 1365 1366 static int dac33_soc_probe(struct snd_soc_component *component) 1367 { 1368 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 1369 int ret = 0; 1370 1371 dac33->component = component; 1372 1373 /* Read the tlv320dac33 ID registers */ 1374 ret = dac33_hard_power(component, 1); 1375 if (ret != 0) { 1376 dev_err(component->dev, "Failed to power up component: %d\n", ret); 1377 goto err_power; 1378 } 1379 ret = dac33_read_id(component); 1380 dac33_hard_power(component, 0); 1381 1382 if (ret < 0) { 1383 dev_err(component->dev, "Failed to read chip ID: %d\n", ret); 1384 ret = -ENODEV; 1385 goto err_power; 1386 } 1387 1388 /* Check if the IRQ number is valid and request it */ 1389 if (dac33->irq >= 0) { 1390 ret = request_irq(dac33->irq, dac33_interrupt_handler, 1391 IRQF_TRIGGER_RISING, 1392 component->name, component); 1393 if (ret < 0) { 1394 dev_err(component->dev, "Could not request IRQ%d (%d)\n", 1395 dac33->irq, ret); 1396 dac33->irq = -1; 1397 } 1398 if (dac33->irq != -1) { 1399 INIT_WORK(&dac33->work, dac33_work); 1400 } 1401 } 1402 1403 /* Only add the FIFO controls, if we have valid IRQ number */ 1404 if (dac33->irq >= 0) 1405 snd_soc_add_component_controls(component, dac33_mode_snd_controls, 1406 ARRAY_SIZE(dac33_mode_snd_controls)); 1407 1408 err_power: 1409 return ret; 1410 } 1411 1412 static void dac33_soc_remove(struct snd_soc_component *component) 1413 { 1414 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); 1415 1416 if (dac33->irq >= 0) { 1417 free_irq(dac33->irq, dac33->component); 1418 flush_work(&dac33->work); 1419 } 1420 } 1421 1422 static const struct snd_soc_component_driver soc_component_dev_tlv320dac33 = { 1423 .read = dac33_read_reg_cache, 1424 .write = dac33_write_locked, 1425 .set_bias_level = dac33_set_bias_level, 1426 .probe = dac33_soc_probe, 1427 .remove = dac33_soc_remove, 1428 .controls = dac33_snd_controls, 1429 .num_controls = ARRAY_SIZE(dac33_snd_controls), 1430 .dapm_widgets = dac33_dapm_widgets, 1431 .num_dapm_widgets = ARRAY_SIZE(dac33_dapm_widgets), 1432 .dapm_routes = audio_map, 1433 .num_dapm_routes = ARRAY_SIZE(audio_map), 1434 .use_pmdown_time = 1, 1435 .endianness = 1, 1436 .non_legacy_dai_naming = 1, 1437 }; 1438 1439 #define DAC33_RATES (SNDRV_PCM_RATE_44100 | \ 1440 SNDRV_PCM_RATE_48000) 1441 #define DAC33_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE) 1442 1443 static const struct snd_soc_dai_ops dac33_dai_ops = { 1444 .startup = dac33_startup, 1445 .shutdown = dac33_shutdown, 1446 .hw_params = dac33_hw_params, 1447 .trigger = dac33_pcm_trigger, 1448 .delay = dac33_dai_delay, 1449 .set_sysclk = dac33_set_dai_sysclk, 1450 .set_fmt = dac33_set_dai_fmt, 1451 }; 1452 1453 static struct snd_soc_dai_driver dac33_dai = { 1454 .name = "tlv320dac33-hifi", 1455 .playback = { 1456 .stream_name = "Playback", 1457 .channels_min = 2, 1458 .channels_max = 2, 1459 .rates = DAC33_RATES, 1460 .formats = DAC33_FORMATS, 1461 .sig_bits = 24, 1462 }, 1463 .ops = &dac33_dai_ops, 1464 }; 1465 1466 static int dac33_i2c_probe(struct i2c_client *client, 1467 const struct i2c_device_id *id) 1468 { 1469 struct tlv320dac33_platform_data *pdata; 1470 struct tlv320dac33_priv *dac33; 1471 int ret, i; 1472 1473 if (client->dev.platform_data == NULL) { 1474 dev_err(&client->dev, "Platform data not set\n"); 1475 return -ENODEV; 1476 } 1477 pdata = client->dev.platform_data; 1478 1479 dac33 = devm_kzalloc(&client->dev, sizeof(struct tlv320dac33_priv), 1480 GFP_KERNEL); 1481 if (dac33 == NULL) 1482 return -ENOMEM; 1483 1484 dac33->reg_cache = devm_kmemdup(&client->dev, 1485 dac33_reg, 1486 ARRAY_SIZE(dac33_reg) * sizeof(u8), 1487 GFP_KERNEL); 1488 if (!dac33->reg_cache) 1489 return -ENOMEM; 1490 1491 dac33->i2c = client; 1492 mutex_init(&dac33->mutex); 1493 spin_lock_init(&dac33->lock); 1494 1495 i2c_set_clientdata(client, dac33); 1496 1497 dac33->power_gpio = pdata->power_gpio; 1498 dac33->burst_bclkdiv = pdata->burst_bclkdiv; 1499 dac33->keep_bclk = pdata->keep_bclk; 1500 dac33->mode1_latency = pdata->mode1_latency; 1501 if (!dac33->mode1_latency) 1502 dac33->mode1_latency = 10000; /* 10ms */ 1503 dac33->irq = client->irq; 1504 /* Disable FIFO use by default */ 1505 dac33->fifo_mode = DAC33_FIFO_BYPASS; 1506 1507 /* Check if the reset GPIO number is valid and request it */ 1508 if (dac33->power_gpio >= 0) { 1509 ret = gpio_request(dac33->power_gpio, "tlv320dac33 reset"); 1510 if (ret < 0) { 1511 dev_err(&client->dev, 1512 "Failed to request reset GPIO (%d)\n", 1513 dac33->power_gpio); 1514 goto err_gpio; 1515 } 1516 gpio_direction_output(dac33->power_gpio, 0); 1517 } 1518 1519 for (i = 0; i < ARRAY_SIZE(dac33->supplies); i++) 1520 dac33->supplies[i].supply = dac33_supply_names[i]; 1521 1522 ret = devm_regulator_bulk_get(&client->dev, ARRAY_SIZE(dac33->supplies), 1523 dac33->supplies); 1524 1525 if (ret != 0) { 1526 dev_err(&client->dev, "Failed to request supplies: %d\n", ret); 1527 goto err_get; 1528 } 1529 1530 ret = devm_snd_soc_register_component(&client->dev, 1531 &soc_component_dev_tlv320dac33, &dac33_dai, 1); 1532 if (ret < 0) 1533 goto err_get; 1534 1535 return ret; 1536 err_get: 1537 if (dac33->power_gpio >= 0) 1538 gpio_free(dac33->power_gpio); 1539 err_gpio: 1540 return ret; 1541 } 1542 1543 static int dac33_i2c_remove(struct i2c_client *client) 1544 { 1545 struct tlv320dac33_priv *dac33 = i2c_get_clientdata(client); 1546 1547 if (unlikely(dac33->chip_power)) 1548 dac33_hard_power(dac33->component, 0); 1549 1550 if (dac33->power_gpio >= 0) 1551 gpio_free(dac33->power_gpio); 1552 1553 return 0; 1554 } 1555 1556 static const struct i2c_device_id tlv320dac33_i2c_id[] = { 1557 { 1558 .name = "tlv320dac33", 1559 .driver_data = 0, 1560 }, 1561 { }, 1562 }; 1563 MODULE_DEVICE_TABLE(i2c, tlv320dac33_i2c_id); 1564 1565 static struct i2c_driver tlv320dac33_i2c_driver = { 1566 .driver = { 1567 .name = "tlv320dac33-codec", 1568 }, 1569 .probe = dac33_i2c_probe, 1570 .remove = dac33_i2c_remove, 1571 .id_table = tlv320dac33_i2c_id, 1572 }; 1573 1574 module_i2c_driver(tlv320dac33_i2c_driver); 1575 1576 MODULE_DESCRIPTION("ASoC TLV320DAC33 codec driver"); 1577 MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>"); 1578 MODULE_LICENSE("GPL"); 1579