1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * wm9081.c -- WM9081 ALSA SoC Audio driver 4 * 5 * Author: Mark Brown 6 * 7 * Copyright 2009-12 Wolfson Microelectronics plc 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/device.h> 15 #include <linux/pm.h> 16 #include <linux/i2c.h> 17 #include <linux/regmap.h> 18 #include <linux/slab.h> 19 #include <sound/core.h> 20 #include <sound/pcm.h> 21 #include <sound/pcm_params.h> 22 #include <sound/soc.h> 23 #include <sound/initval.h> 24 #include <sound/tlv.h> 25 26 #include <sound/wm9081.h> 27 #include "wm9081.h" 28 29 static const struct reg_default wm9081_reg[] = { 30 { 2, 0x00B9 }, /* R2 - Analogue Lineout */ 31 { 3, 0x00B9 }, /* R3 - Analogue Speaker PGA */ 32 { 4, 0x0001 }, /* R4 - VMID Control */ 33 { 5, 0x0068 }, /* R5 - Bias Control 1 */ 34 { 7, 0x0000 }, /* R7 - Analogue Mixer */ 35 { 8, 0x0000 }, /* R8 - Anti Pop Control */ 36 { 9, 0x01DB }, /* R9 - Analogue Speaker 1 */ 37 { 10, 0x0018 }, /* R10 - Analogue Speaker 2 */ 38 { 11, 0x0180 }, /* R11 - Power Management */ 39 { 12, 0x0000 }, /* R12 - Clock Control 1 */ 40 { 13, 0x0038 }, /* R13 - Clock Control 2 */ 41 { 14, 0x4000 }, /* R14 - Clock Control 3 */ 42 { 16, 0x0000 }, /* R16 - FLL Control 1 */ 43 { 17, 0x0200 }, /* R17 - FLL Control 2 */ 44 { 18, 0x0000 }, /* R18 - FLL Control 3 */ 45 { 19, 0x0204 }, /* R19 - FLL Control 4 */ 46 { 20, 0x0000 }, /* R20 - FLL Control 5 */ 47 { 22, 0x0000 }, /* R22 - Audio Interface 1 */ 48 { 23, 0x0002 }, /* R23 - Audio Interface 2 */ 49 { 24, 0x0008 }, /* R24 - Audio Interface 3 */ 50 { 25, 0x0022 }, /* R25 - Audio Interface 4 */ 51 { 27, 0x0006 }, /* R27 - Interrupt Status Mask */ 52 { 28, 0x0000 }, /* R28 - Interrupt Polarity */ 53 { 29, 0x0000 }, /* R29 - Interrupt Control */ 54 { 30, 0x00C0 }, /* R30 - DAC Digital 1 */ 55 { 31, 0x0008 }, /* R31 - DAC Digital 2 */ 56 { 32, 0x09AF }, /* R32 - DRC 1 */ 57 { 33, 0x4201 }, /* R33 - DRC 2 */ 58 { 34, 0x0000 }, /* R34 - DRC 3 */ 59 { 35, 0x0000 }, /* R35 - DRC 4 */ 60 { 38, 0x0000 }, /* R38 - Write Sequencer 1 */ 61 { 39, 0x0000 }, /* R39 - Write Sequencer 2 */ 62 { 40, 0x0002 }, /* R40 - MW Slave 1 */ 63 { 42, 0x0000 }, /* R42 - EQ 1 */ 64 { 43, 0x0000 }, /* R43 - EQ 2 */ 65 { 44, 0x0FCA }, /* R44 - EQ 3 */ 66 { 45, 0x0400 }, /* R45 - EQ 4 */ 67 { 46, 0x00B8 }, /* R46 - EQ 5 */ 68 { 47, 0x1EB5 }, /* R47 - EQ 6 */ 69 { 48, 0xF145 }, /* R48 - EQ 7 */ 70 { 49, 0x0B75 }, /* R49 - EQ 8 */ 71 { 50, 0x01C5 }, /* R50 - EQ 9 */ 72 { 51, 0x169E }, /* R51 - EQ 10 */ 73 { 52, 0xF829 }, /* R52 - EQ 11 */ 74 { 53, 0x07AD }, /* R53 - EQ 12 */ 75 { 54, 0x1103 }, /* R54 - EQ 13 */ 76 { 55, 0x1C58 }, /* R55 - EQ 14 */ 77 { 56, 0xF373 }, /* R56 - EQ 15 */ 78 { 57, 0x0A54 }, /* R57 - EQ 16 */ 79 { 58, 0x0558 }, /* R58 - EQ 17 */ 80 { 59, 0x0564 }, /* R59 - EQ 18 */ 81 { 60, 0x0559 }, /* R60 - EQ 19 */ 82 { 61, 0x4000 }, /* R61 - EQ 20 */ 83 }; 84 85 static struct { 86 int ratio; 87 int clk_sys_rate; 88 } clk_sys_rates[] = { 89 { 64, 0 }, 90 { 128, 1 }, 91 { 192, 2 }, 92 { 256, 3 }, 93 { 384, 4 }, 94 { 512, 5 }, 95 { 768, 6 }, 96 { 1024, 7 }, 97 { 1408, 8 }, 98 { 1536, 9 }, 99 }; 100 101 static struct { 102 int rate; 103 int sample_rate; 104 } sample_rates[] = { 105 { 8000, 0 }, 106 { 11025, 1 }, 107 { 12000, 2 }, 108 { 16000, 3 }, 109 { 22050, 4 }, 110 { 24000, 5 }, 111 { 32000, 6 }, 112 { 44100, 7 }, 113 { 48000, 8 }, 114 { 88200, 9 }, 115 { 96000, 10 }, 116 }; 117 118 static struct { 119 int div; /* *10 due to .5s */ 120 int bclk_div; 121 } bclk_divs[] = { 122 { 10, 0 }, 123 { 15, 1 }, 124 { 20, 2 }, 125 { 30, 3 }, 126 { 40, 4 }, 127 { 50, 5 }, 128 { 55, 6 }, 129 { 60, 7 }, 130 { 80, 8 }, 131 { 100, 9 }, 132 { 110, 10 }, 133 { 120, 11 }, 134 { 160, 12 }, 135 { 200, 13 }, 136 { 220, 14 }, 137 { 240, 15 }, 138 { 250, 16 }, 139 { 300, 17 }, 140 { 320, 18 }, 141 { 440, 19 }, 142 { 480, 20 }, 143 }; 144 145 struct wm9081_priv { 146 struct regmap *regmap; 147 int sysclk_source; 148 int mclk_rate; 149 int sysclk_rate; 150 int fs; 151 int bclk; 152 int master; 153 int fll_fref; 154 int fll_fout; 155 int tdm_width; 156 struct wm9081_pdata pdata; 157 }; 158 159 static bool wm9081_volatile_register(struct device *dev, unsigned int reg) 160 { 161 switch (reg) { 162 case WM9081_SOFTWARE_RESET: 163 case WM9081_INTERRUPT_STATUS: 164 return true; 165 default: 166 return false; 167 } 168 } 169 170 static bool wm9081_readable_register(struct device *dev, unsigned int reg) 171 { 172 switch (reg) { 173 case WM9081_SOFTWARE_RESET: 174 case WM9081_ANALOGUE_LINEOUT: 175 case WM9081_ANALOGUE_SPEAKER_PGA: 176 case WM9081_VMID_CONTROL: 177 case WM9081_BIAS_CONTROL_1: 178 case WM9081_ANALOGUE_MIXER: 179 case WM9081_ANTI_POP_CONTROL: 180 case WM9081_ANALOGUE_SPEAKER_1: 181 case WM9081_ANALOGUE_SPEAKER_2: 182 case WM9081_POWER_MANAGEMENT: 183 case WM9081_CLOCK_CONTROL_1: 184 case WM9081_CLOCK_CONTROL_2: 185 case WM9081_CLOCK_CONTROL_3: 186 case WM9081_FLL_CONTROL_1: 187 case WM9081_FLL_CONTROL_2: 188 case WM9081_FLL_CONTROL_3: 189 case WM9081_FLL_CONTROL_4: 190 case WM9081_FLL_CONTROL_5: 191 case WM9081_AUDIO_INTERFACE_1: 192 case WM9081_AUDIO_INTERFACE_2: 193 case WM9081_AUDIO_INTERFACE_3: 194 case WM9081_AUDIO_INTERFACE_4: 195 case WM9081_INTERRUPT_STATUS: 196 case WM9081_INTERRUPT_STATUS_MASK: 197 case WM9081_INTERRUPT_POLARITY: 198 case WM9081_INTERRUPT_CONTROL: 199 case WM9081_DAC_DIGITAL_1: 200 case WM9081_DAC_DIGITAL_2: 201 case WM9081_DRC_1: 202 case WM9081_DRC_2: 203 case WM9081_DRC_3: 204 case WM9081_DRC_4: 205 case WM9081_WRITE_SEQUENCER_1: 206 case WM9081_WRITE_SEQUENCER_2: 207 case WM9081_MW_SLAVE_1: 208 case WM9081_EQ_1: 209 case WM9081_EQ_2: 210 case WM9081_EQ_3: 211 case WM9081_EQ_4: 212 case WM9081_EQ_5: 213 case WM9081_EQ_6: 214 case WM9081_EQ_7: 215 case WM9081_EQ_8: 216 case WM9081_EQ_9: 217 case WM9081_EQ_10: 218 case WM9081_EQ_11: 219 case WM9081_EQ_12: 220 case WM9081_EQ_13: 221 case WM9081_EQ_14: 222 case WM9081_EQ_15: 223 case WM9081_EQ_16: 224 case WM9081_EQ_17: 225 case WM9081_EQ_18: 226 case WM9081_EQ_19: 227 case WM9081_EQ_20: 228 return true; 229 default: 230 return false; 231 } 232 } 233 234 static int wm9081_reset(struct regmap *map) 235 { 236 return regmap_write(map, WM9081_SOFTWARE_RESET, 0x9081); 237 } 238 239 static const DECLARE_TLV_DB_SCALE(drc_in_tlv, -4500, 75, 0); 240 static const DECLARE_TLV_DB_SCALE(drc_out_tlv, -2250, 75, 0); 241 static const DECLARE_TLV_DB_SCALE(drc_min_tlv, -1800, 600, 0); 242 static const DECLARE_TLV_DB_RANGE(drc_max_tlv, 243 0, 0, TLV_DB_SCALE_ITEM(1200, 0, 0), 244 1, 1, TLV_DB_SCALE_ITEM(1800, 0, 0), 245 2, 2, TLV_DB_SCALE_ITEM(2400, 0, 0), 246 3, 3, TLV_DB_SCALE_ITEM(3600, 0, 0) 247 ); 248 static const DECLARE_TLV_DB_SCALE(drc_qr_tlv, 1200, 600, 0); 249 static const DECLARE_TLV_DB_SCALE(drc_startup_tlv, -300, 50, 0); 250 251 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0); 252 253 static const DECLARE_TLV_DB_SCALE(in_tlv, -600, 600, 0); 254 static const DECLARE_TLV_DB_SCALE(dac_tlv, -7200, 75, 1); 255 static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0); 256 257 static const char *drc_high_text[] = { 258 "1", 259 "1/2", 260 "1/4", 261 "1/8", 262 "1/16", 263 "0", 264 }; 265 266 static SOC_ENUM_SINGLE_DECL(drc_high, WM9081_DRC_3, 3, drc_high_text); 267 268 static const char *drc_low_text[] = { 269 "1", 270 "1/2", 271 "1/4", 272 "1/8", 273 "0", 274 }; 275 276 static SOC_ENUM_SINGLE_DECL(drc_low, WM9081_DRC_3, 0, drc_low_text); 277 278 static const char *drc_atk_text[] = { 279 "181us", 280 "181us", 281 "363us", 282 "726us", 283 "1.45ms", 284 "2.9ms", 285 "5.8ms", 286 "11.6ms", 287 "23.2ms", 288 "46.4ms", 289 "92.8ms", 290 "185.6ms", 291 }; 292 293 static SOC_ENUM_SINGLE_DECL(drc_atk, WM9081_DRC_2, 12, drc_atk_text); 294 295 static const char *drc_dcy_text[] = { 296 "186ms", 297 "372ms", 298 "743ms", 299 "1.49s", 300 "2.97s", 301 "5.94s", 302 "11.89s", 303 "23.78s", 304 "47.56s", 305 }; 306 307 static SOC_ENUM_SINGLE_DECL(drc_dcy, WM9081_DRC_2, 8, drc_dcy_text); 308 309 static const char *drc_qr_dcy_text[] = { 310 "0.725ms", 311 "1.45ms", 312 "5.8ms", 313 }; 314 315 static SOC_ENUM_SINGLE_DECL(drc_qr_dcy, WM9081_DRC_2, 4, drc_qr_dcy_text); 316 317 static const char *dac_deemph_text[] = { 318 "None", 319 "32kHz", 320 "44.1kHz", 321 "48kHz", 322 }; 323 324 static SOC_ENUM_SINGLE_DECL(dac_deemph, WM9081_DAC_DIGITAL_2, 1, 325 dac_deemph_text); 326 327 static const char *speaker_mode_text[] = { 328 "Class D", 329 "Class AB", 330 }; 331 332 static SOC_ENUM_SINGLE_DECL(speaker_mode, WM9081_ANALOGUE_SPEAKER_2, 6, 333 speaker_mode_text); 334 335 static int speaker_mode_get(struct snd_kcontrol *kcontrol, 336 struct snd_ctl_elem_value *ucontrol) 337 { 338 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 339 unsigned int reg; 340 341 reg = snd_soc_component_read(component, WM9081_ANALOGUE_SPEAKER_2); 342 if (reg & WM9081_SPK_MODE) 343 ucontrol->value.enumerated.item[0] = 1; 344 else 345 ucontrol->value.enumerated.item[0] = 0; 346 347 return 0; 348 } 349 350 /* 351 * Stop any attempts to change speaker mode while the speaker is enabled. 352 * 353 * We also have some special anti-pop controls dependent on speaker 354 * mode which must be changed along with the mode. 355 */ 356 static int speaker_mode_put(struct snd_kcontrol *kcontrol, 357 struct snd_ctl_elem_value *ucontrol) 358 { 359 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 360 unsigned int reg_pwr = snd_soc_component_read(component, WM9081_POWER_MANAGEMENT); 361 unsigned int reg2 = snd_soc_component_read(component, WM9081_ANALOGUE_SPEAKER_2); 362 363 /* Are we changing anything? */ 364 if (ucontrol->value.enumerated.item[0] == 365 ((reg2 & WM9081_SPK_MODE) != 0)) 366 return 0; 367 368 /* Don't try to change modes while enabled */ 369 if (reg_pwr & WM9081_SPK_ENA) 370 return -EINVAL; 371 372 if (ucontrol->value.enumerated.item[0]) { 373 /* Class AB */ 374 reg2 &= ~(WM9081_SPK_INV_MUTE | WM9081_OUT_SPK_CTRL); 375 reg2 |= WM9081_SPK_MODE; 376 } else { 377 /* Class D */ 378 reg2 |= WM9081_SPK_INV_MUTE | WM9081_OUT_SPK_CTRL; 379 reg2 &= ~WM9081_SPK_MODE; 380 } 381 382 snd_soc_component_write(component, WM9081_ANALOGUE_SPEAKER_2, reg2); 383 384 return 0; 385 } 386 387 static const struct snd_kcontrol_new wm9081_snd_controls[] = { 388 SOC_SINGLE_TLV("IN1 Volume", WM9081_ANALOGUE_MIXER, 1, 1, 1, in_tlv), 389 SOC_SINGLE_TLV("IN2 Volume", WM9081_ANALOGUE_MIXER, 3, 1, 1, in_tlv), 390 391 SOC_SINGLE_TLV("Playback Volume", WM9081_DAC_DIGITAL_1, 1, 96, 0, dac_tlv), 392 393 SOC_SINGLE("LINEOUT Switch", WM9081_ANALOGUE_LINEOUT, 7, 1, 1), 394 SOC_SINGLE("LINEOUT ZC Switch", WM9081_ANALOGUE_LINEOUT, 6, 1, 0), 395 SOC_SINGLE_TLV("LINEOUT Volume", WM9081_ANALOGUE_LINEOUT, 0, 63, 0, out_tlv), 396 397 SOC_SINGLE("DRC Switch", WM9081_DRC_1, 15, 1, 0), 398 SOC_ENUM("DRC High Slope", drc_high), 399 SOC_ENUM("DRC Low Slope", drc_low), 400 SOC_SINGLE_TLV("DRC Input Volume", WM9081_DRC_4, 5, 60, 1, drc_in_tlv), 401 SOC_SINGLE_TLV("DRC Output Volume", WM9081_DRC_4, 0, 30, 1, drc_out_tlv), 402 SOC_SINGLE_TLV("DRC Minimum Volume", WM9081_DRC_2, 2, 3, 1, drc_min_tlv), 403 SOC_SINGLE_TLV("DRC Maximum Volume", WM9081_DRC_2, 0, 3, 0, drc_max_tlv), 404 SOC_ENUM("DRC Attack", drc_atk), 405 SOC_ENUM("DRC Decay", drc_dcy), 406 SOC_SINGLE("DRC Quick Release Switch", WM9081_DRC_1, 2, 1, 0), 407 SOC_SINGLE_TLV("DRC Quick Release Volume", WM9081_DRC_2, 6, 3, 0, drc_qr_tlv), 408 SOC_ENUM("DRC Quick Release Decay", drc_qr_dcy), 409 SOC_SINGLE_TLV("DRC Startup Volume", WM9081_DRC_1, 6, 18, 0, drc_startup_tlv), 410 411 SOC_SINGLE("EQ Switch", WM9081_EQ_1, 0, 1, 0), 412 413 SOC_SINGLE("Speaker DC Volume", WM9081_ANALOGUE_SPEAKER_1, 3, 5, 0), 414 SOC_SINGLE("Speaker AC Volume", WM9081_ANALOGUE_SPEAKER_1, 0, 5, 0), 415 SOC_SINGLE("Speaker Switch", WM9081_ANALOGUE_SPEAKER_PGA, 7, 1, 1), 416 SOC_SINGLE("Speaker ZC Switch", WM9081_ANALOGUE_SPEAKER_PGA, 6, 1, 0), 417 SOC_SINGLE_TLV("Speaker Volume", WM9081_ANALOGUE_SPEAKER_PGA, 0, 63, 0, 418 out_tlv), 419 SOC_ENUM("DAC Deemphasis", dac_deemph), 420 SOC_ENUM_EXT("Speaker Mode", speaker_mode, speaker_mode_get, speaker_mode_put), 421 }; 422 423 static const struct snd_kcontrol_new wm9081_eq_controls[] = { 424 SOC_SINGLE_TLV("EQ1 Volume", WM9081_EQ_1, 11, 24, 0, eq_tlv), 425 SOC_SINGLE_TLV("EQ2 Volume", WM9081_EQ_1, 6, 24, 0, eq_tlv), 426 SOC_SINGLE_TLV("EQ3 Volume", WM9081_EQ_1, 1, 24, 0, eq_tlv), 427 SOC_SINGLE_TLV("EQ4 Volume", WM9081_EQ_2, 11, 24, 0, eq_tlv), 428 SOC_SINGLE_TLV("EQ5 Volume", WM9081_EQ_2, 6, 24, 0, eq_tlv), 429 }; 430 431 static const struct snd_kcontrol_new mixer[] = { 432 SOC_DAPM_SINGLE("IN1 Switch", WM9081_ANALOGUE_MIXER, 0, 1, 0), 433 SOC_DAPM_SINGLE("IN2 Switch", WM9081_ANALOGUE_MIXER, 2, 1, 0), 434 SOC_DAPM_SINGLE("Playback Switch", WM9081_ANALOGUE_MIXER, 4, 1, 0), 435 }; 436 437 struct _fll_div { 438 u16 fll_fratio; 439 u16 fll_outdiv; 440 u16 fll_clk_ref_div; 441 u16 n; 442 u16 k; 443 }; 444 445 /* The size in bits of the FLL divide multiplied by 10 446 * to allow rounding later */ 447 #define FIXED_FLL_SIZE ((1 << 16) * 10) 448 449 static struct { 450 unsigned int min; 451 unsigned int max; 452 u16 fll_fratio; 453 int ratio; 454 } fll_fratios[] = { 455 { 0, 64000, 4, 16 }, 456 { 64000, 128000, 3, 8 }, 457 { 128000, 256000, 2, 4 }, 458 { 256000, 1000000, 1, 2 }, 459 { 1000000, 13500000, 0, 1 }, 460 }; 461 462 static int fll_factors(struct _fll_div *fll_div, unsigned int Fref, 463 unsigned int Fout) 464 { 465 u64 Kpart; 466 unsigned int K, Ndiv, Nmod, target; 467 unsigned int div; 468 int i; 469 470 /* Fref must be <=13.5MHz */ 471 div = 1; 472 while ((Fref / div) > 13500000) { 473 div *= 2; 474 475 if (div > 8) { 476 pr_err("Can't scale %dMHz input down to <=13.5MHz\n", 477 Fref); 478 return -EINVAL; 479 } 480 } 481 fll_div->fll_clk_ref_div = div / 2; 482 483 pr_debug("Fref=%u Fout=%u\n", Fref, Fout); 484 485 /* Apply the division for our remaining calculations */ 486 Fref /= div; 487 488 /* Fvco should be 90-100MHz; don't check the upper bound */ 489 div = 0; 490 target = Fout * 2; 491 while (target < 90000000) { 492 div++; 493 target *= 2; 494 if (div > 7) { 495 pr_err("Unable to find FLL_OUTDIV for Fout=%uHz\n", 496 Fout); 497 return -EINVAL; 498 } 499 } 500 fll_div->fll_outdiv = div; 501 502 pr_debug("Fvco=%dHz\n", target); 503 504 /* Find an appropriate FLL_FRATIO and factor it out of the target */ 505 for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) { 506 if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) { 507 fll_div->fll_fratio = fll_fratios[i].fll_fratio; 508 target /= fll_fratios[i].ratio; 509 break; 510 } 511 } 512 if (i == ARRAY_SIZE(fll_fratios)) { 513 pr_err("Unable to find FLL_FRATIO for Fref=%uHz\n", Fref); 514 return -EINVAL; 515 } 516 517 /* Now, calculate N.K */ 518 Ndiv = target / Fref; 519 520 fll_div->n = Ndiv; 521 Nmod = target % Fref; 522 pr_debug("Nmod=%d\n", Nmod); 523 524 /* Calculate fractional part - scale up so we can round. */ 525 Kpart = FIXED_FLL_SIZE * (long long)Nmod; 526 527 do_div(Kpart, Fref); 528 529 K = Kpart & 0xFFFFFFFF; 530 531 if ((K % 10) >= 5) 532 K += 5; 533 534 /* Move down to proper range now rounding is done */ 535 fll_div->k = K / 10; 536 537 pr_debug("N=%x K=%x FLL_FRATIO=%x FLL_OUTDIV=%x FLL_CLK_REF_DIV=%x\n", 538 fll_div->n, fll_div->k, 539 fll_div->fll_fratio, fll_div->fll_outdiv, 540 fll_div->fll_clk_ref_div); 541 542 return 0; 543 } 544 545 static int wm9081_set_fll(struct snd_soc_component *component, int fll_id, 546 unsigned int Fref, unsigned int Fout) 547 { 548 struct wm9081_priv *wm9081 = snd_soc_component_get_drvdata(component); 549 u16 reg1, reg4, reg5; 550 struct _fll_div fll_div; 551 int ret; 552 int clk_sys_reg; 553 554 /* Any change? */ 555 if (Fref == wm9081->fll_fref && Fout == wm9081->fll_fout) 556 return 0; 557 558 /* Disable the FLL */ 559 if (Fout == 0) { 560 dev_dbg(component->dev, "FLL disabled\n"); 561 wm9081->fll_fref = 0; 562 wm9081->fll_fout = 0; 563 564 return 0; 565 } 566 567 ret = fll_factors(&fll_div, Fref, Fout); 568 if (ret != 0) 569 return ret; 570 571 reg5 = snd_soc_component_read(component, WM9081_FLL_CONTROL_5); 572 reg5 &= ~WM9081_FLL_CLK_SRC_MASK; 573 574 switch (fll_id) { 575 case WM9081_SYSCLK_FLL_MCLK: 576 reg5 |= 0x1; 577 break; 578 579 default: 580 dev_err(component->dev, "Unknown FLL ID %d\n", fll_id); 581 return -EINVAL; 582 } 583 584 /* Disable CLK_SYS while we reconfigure */ 585 clk_sys_reg = snd_soc_component_read(component, WM9081_CLOCK_CONTROL_3); 586 if (clk_sys_reg & WM9081_CLK_SYS_ENA) 587 snd_soc_component_write(component, WM9081_CLOCK_CONTROL_3, 588 clk_sys_reg & ~WM9081_CLK_SYS_ENA); 589 590 /* Any FLL configuration change requires that the FLL be 591 * disabled first. */ 592 reg1 = snd_soc_component_read(component, WM9081_FLL_CONTROL_1); 593 reg1 &= ~WM9081_FLL_ENA; 594 snd_soc_component_write(component, WM9081_FLL_CONTROL_1, reg1); 595 596 /* Apply the configuration */ 597 if (fll_div.k) 598 reg1 |= WM9081_FLL_FRAC_MASK; 599 else 600 reg1 &= ~WM9081_FLL_FRAC_MASK; 601 snd_soc_component_write(component, WM9081_FLL_CONTROL_1, reg1); 602 603 snd_soc_component_write(component, WM9081_FLL_CONTROL_2, 604 (fll_div.fll_outdiv << WM9081_FLL_OUTDIV_SHIFT) | 605 (fll_div.fll_fratio << WM9081_FLL_FRATIO_SHIFT)); 606 snd_soc_component_write(component, WM9081_FLL_CONTROL_3, fll_div.k); 607 608 reg4 = snd_soc_component_read(component, WM9081_FLL_CONTROL_4); 609 reg4 &= ~WM9081_FLL_N_MASK; 610 reg4 |= fll_div.n << WM9081_FLL_N_SHIFT; 611 snd_soc_component_write(component, WM9081_FLL_CONTROL_4, reg4); 612 613 reg5 &= ~WM9081_FLL_CLK_REF_DIV_MASK; 614 reg5 |= fll_div.fll_clk_ref_div << WM9081_FLL_CLK_REF_DIV_SHIFT; 615 snd_soc_component_write(component, WM9081_FLL_CONTROL_5, reg5); 616 617 /* Set gain to the recommended value */ 618 snd_soc_component_update_bits(component, WM9081_FLL_CONTROL_4, 619 WM9081_FLL_GAIN_MASK, 0); 620 621 /* Enable the FLL */ 622 snd_soc_component_write(component, WM9081_FLL_CONTROL_1, reg1 | WM9081_FLL_ENA); 623 624 /* Then bring CLK_SYS up again if it was disabled */ 625 if (clk_sys_reg & WM9081_CLK_SYS_ENA) 626 snd_soc_component_write(component, WM9081_CLOCK_CONTROL_3, clk_sys_reg); 627 628 dev_dbg(component->dev, "FLL enabled at %dHz->%dHz\n", Fref, Fout); 629 630 wm9081->fll_fref = Fref; 631 wm9081->fll_fout = Fout; 632 633 return 0; 634 } 635 636 static int configure_clock(struct snd_soc_component *component) 637 { 638 struct wm9081_priv *wm9081 = snd_soc_component_get_drvdata(component); 639 int new_sysclk, i, target; 640 unsigned int reg; 641 int ret = 0; 642 int mclkdiv = 0; 643 int fll = 0; 644 645 switch (wm9081->sysclk_source) { 646 case WM9081_SYSCLK_MCLK: 647 if (wm9081->mclk_rate > 12225000) { 648 mclkdiv = 1; 649 wm9081->sysclk_rate = wm9081->mclk_rate / 2; 650 } else { 651 wm9081->sysclk_rate = wm9081->mclk_rate; 652 } 653 wm9081_set_fll(component, WM9081_SYSCLK_FLL_MCLK, 0, 0); 654 break; 655 656 case WM9081_SYSCLK_FLL_MCLK: 657 /* If we have a sample rate calculate a CLK_SYS that 658 * gives us a suitable DAC configuration, plus BCLK. 659 * Ideally we would check to see if we can clock 660 * directly from MCLK and only use the FLL if this is 661 * not the case, though care must be taken with free 662 * running mode. 663 */ 664 if (wm9081->master && wm9081->bclk) { 665 /* Make sure we can generate CLK_SYS and BCLK 666 * and that we've got 3MHz for optimal 667 * performance. */ 668 for (i = 0; i < ARRAY_SIZE(clk_sys_rates); i++) { 669 target = wm9081->fs * clk_sys_rates[i].ratio; 670 new_sysclk = target; 671 if (target >= wm9081->bclk && 672 target > 3000000) 673 break; 674 } 675 676 if (i == ARRAY_SIZE(clk_sys_rates)) 677 return -EINVAL; 678 679 } else if (wm9081->fs) { 680 for (i = 0; i < ARRAY_SIZE(clk_sys_rates); i++) { 681 new_sysclk = clk_sys_rates[i].ratio 682 * wm9081->fs; 683 if (new_sysclk > 3000000) 684 break; 685 } 686 687 if (i == ARRAY_SIZE(clk_sys_rates)) 688 return -EINVAL; 689 690 } else { 691 new_sysclk = 12288000; 692 } 693 694 ret = wm9081_set_fll(component, WM9081_SYSCLK_FLL_MCLK, 695 wm9081->mclk_rate, new_sysclk); 696 if (ret == 0) { 697 wm9081->sysclk_rate = new_sysclk; 698 699 /* Switch SYSCLK over to FLL */ 700 fll = 1; 701 } else { 702 wm9081->sysclk_rate = wm9081->mclk_rate; 703 } 704 break; 705 706 default: 707 return -EINVAL; 708 } 709 710 reg = snd_soc_component_read(component, WM9081_CLOCK_CONTROL_1); 711 if (mclkdiv) 712 reg |= WM9081_MCLKDIV2; 713 else 714 reg &= ~WM9081_MCLKDIV2; 715 snd_soc_component_write(component, WM9081_CLOCK_CONTROL_1, reg); 716 717 reg = snd_soc_component_read(component, WM9081_CLOCK_CONTROL_3); 718 if (fll) 719 reg |= WM9081_CLK_SRC_SEL; 720 else 721 reg &= ~WM9081_CLK_SRC_SEL; 722 snd_soc_component_write(component, WM9081_CLOCK_CONTROL_3, reg); 723 724 dev_dbg(component->dev, "CLK_SYS is %dHz\n", wm9081->sysclk_rate); 725 726 return ret; 727 } 728 729 static int clk_sys_event(struct snd_soc_dapm_widget *w, 730 struct snd_kcontrol *kcontrol, int event) 731 { 732 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); 733 struct wm9081_priv *wm9081 = snd_soc_component_get_drvdata(component); 734 735 /* This should be done on init() for bypass paths */ 736 switch (wm9081->sysclk_source) { 737 case WM9081_SYSCLK_MCLK: 738 dev_dbg(component->dev, "Using %dHz MCLK\n", wm9081->mclk_rate); 739 break; 740 case WM9081_SYSCLK_FLL_MCLK: 741 dev_dbg(component->dev, "Using %dHz MCLK with FLL\n", 742 wm9081->mclk_rate); 743 break; 744 default: 745 dev_err(component->dev, "System clock not configured\n"); 746 return -EINVAL; 747 } 748 749 switch (event) { 750 case SND_SOC_DAPM_PRE_PMU: 751 configure_clock(component); 752 break; 753 754 case SND_SOC_DAPM_POST_PMD: 755 /* Disable the FLL if it's running */ 756 wm9081_set_fll(component, 0, 0, 0); 757 break; 758 } 759 760 return 0; 761 } 762 763 static const struct snd_soc_dapm_widget wm9081_dapm_widgets[] = { 764 SND_SOC_DAPM_INPUT("IN1"), 765 SND_SOC_DAPM_INPUT("IN2"), 766 767 SND_SOC_DAPM_DAC("DAC", NULL, WM9081_POWER_MANAGEMENT, 0, 0), 768 769 SND_SOC_DAPM_MIXER_NAMED_CTL("Mixer", SND_SOC_NOPM, 0, 0, 770 mixer, ARRAY_SIZE(mixer)), 771 772 SND_SOC_DAPM_PGA("LINEOUT PGA", WM9081_POWER_MANAGEMENT, 4, 0, NULL, 0), 773 774 SND_SOC_DAPM_PGA("Speaker PGA", WM9081_POWER_MANAGEMENT, 2, 0, NULL, 0), 775 SND_SOC_DAPM_OUT_DRV("Speaker", WM9081_POWER_MANAGEMENT, 1, 0, NULL, 0), 776 777 SND_SOC_DAPM_OUTPUT("LINEOUT"), 778 SND_SOC_DAPM_OUTPUT("SPKN"), 779 SND_SOC_DAPM_OUTPUT("SPKP"), 780 781 SND_SOC_DAPM_SUPPLY("CLK_SYS", WM9081_CLOCK_CONTROL_3, 0, 0, clk_sys_event, 782 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 783 SND_SOC_DAPM_SUPPLY("CLK_DSP", WM9081_CLOCK_CONTROL_3, 1, 0, NULL, 0), 784 SND_SOC_DAPM_SUPPLY("TOCLK", WM9081_CLOCK_CONTROL_3, 2, 0, NULL, 0), 785 SND_SOC_DAPM_SUPPLY("TSENSE", WM9081_POWER_MANAGEMENT, 7, 0, NULL, 0), 786 }; 787 788 789 static const struct snd_soc_dapm_route wm9081_audio_paths[] = { 790 { "DAC", NULL, "CLK_SYS" }, 791 { "DAC", NULL, "CLK_DSP" }, 792 { "DAC", NULL, "AIF" }, 793 794 { "Mixer", "IN1 Switch", "IN1" }, 795 { "Mixer", "IN2 Switch", "IN2" }, 796 { "Mixer", "Playback Switch", "DAC" }, 797 798 { "LINEOUT PGA", NULL, "Mixer" }, 799 { "LINEOUT PGA", NULL, "TOCLK" }, 800 { "LINEOUT PGA", NULL, "CLK_SYS" }, 801 802 { "LINEOUT", NULL, "LINEOUT PGA" }, 803 804 { "Speaker PGA", NULL, "Mixer" }, 805 { "Speaker PGA", NULL, "TOCLK" }, 806 { "Speaker PGA", NULL, "CLK_SYS" }, 807 808 { "Speaker", NULL, "Speaker PGA" }, 809 { "Speaker", NULL, "TSENSE" }, 810 811 { "SPKN", NULL, "Speaker" }, 812 { "SPKP", NULL, "Speaker" }, 813 }; 814 815 static int wm9081_set_bias_level(struct snd_soc_component *component, 816 enum snd_soc_bias_level level) 817 { 818 struct wm9081_priv *wm9081 = snd_soc_component_get_drvdata(component); 819 820 switch (level) { 821 case SND_SOC_BIAS_ON: 822 break; 823 824 case SND_SOC_BIAS_PREPARE: 825 /* VMID=2*40k */ 826 snd_soc_component_update_bits(component, WM9081_VMID_CONTROL, 827 WM9081_VMID_SEL_MASK, 0x2); 828 829 /* Normal bias current */ 830 snd_soc_component_update_bits(component, WM9081_BIAS_CONTROL_1, 831 WM9081_STBY_BIAS_ENA, 0); 832 break; 833 834 case SND_SOC_BIAS_STANDBY: 835 /* Initial cold start */ 836 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { 837 regcache_cache_only(wm9081->regmap, false); 838 regcache_sync(wm9081->regmap); 839 840 /* Disable LINEOUT discharge */ 841 snd_soc_component_update_bits(component, WM9081_ANTI_POP_CONTROL, 842 WM9081_LINEOUT_DISCH, 0); 843 844 /* Select startup bias source */ 845 snd_soc_component_update_bits(component, WM9081_BIAS_CONTROL_1, 846 WM9081_BIAS_SRC | WM9081_BIAS_ENA, 847 WM9081_BIAS_SRC | WM9081_BIAS_ENA); 848 849 /* VMID 2*4k; Soft VMID ramp enable */ 850 snd_soc_component_update_bits(component, WM9081_VMID_CONTROL, 851 WM9081_VMID_RAMP | 852 WM9081_VMID_SEL_MASK, 853 WM9081_VMID_RAMP | 0x6); 854 855 mdelay(100); 856 857 /* Normal bias enable & soft start off */ 858 snd_soc_component_update_bits(component, WM9081_VMID_CONTROL, 859 WM9081_VMID_RAMP, 0); 860 861 /* Standard bias source */ 862 snd_soc_component_update_bits(component, WM9081_BIAS_CONTROL_1, 863 WM9081_BIAS_SRC, 0); 864 } 865 866 /* VMID 2*240k */ 867 snd_soc_component_update_bits(component, WM9081_VMID_CONTROL, 868 WM9081_VMID_SEL_MASK, 0x04); 869 870 /* Standby bias current on */ 871 snd_soc_component_update_bits(component, WM9081_BIAS_CONTROL_1, 872 WM9081_STBY_BIAS_ENA, 873 WM9081_STBY_BIAS_ENA); 874 break; 875 876 case SND_SOC_BIAS_OFF: 877 /* Startup bias source and disable bias */ 878 snd_soc_component_update_bits(component, WM9081_BIAS_CONTROL_1, 879 WM9081_BIAS_SRC | WM9081_BIAS_ENA, 880 WM9081_BIAS_SRC); 881 882 /* Disable VMID with soft ramping */ 883 snd_soc_component_update_bits(component, WM9081_VMID_CONTROL, 884 WM9081_VMID_RAMP | WM9081_VMID_SEL_MASK, 885 WM9081_VMID_RAMP); 886 887 /* Actively discharge LINEOUT */ 888 snd_soc_component_update_bits(component, WM9081_ANTI_POP_CONTROL, 889 WM9081_LINEOUT_DISCH, 890 WM9081_LINEOUT_DISCH); 891 892 regcache_cache_only(wm9081->regmap, true); 893 break; 894 } 895 896 return 0; 897 } 898 899 static int wm9081_set_dai_fmt(struct snd_soc_dai *dai, 900 unsigned int fmt) 901 { 902 struct snd_soc_component *component = dai->component; 903 struct wm9081_priv *wm9081 = snd_soc_component_get_drvdata(component); 904 unsigned int aif2 = snd_soc_component_read(component, WM9081_AUDIO_INTERFACE_2); 905 906 aif2 &= ~(WM9081_AIF_BCLK_INV | WM9081_AIF_LRCLK_INV | 907 WM9081_BCLK_DIR | WM9081_LRCLK_DIR | WM9081_AIF_FMT_MASK); 908 909 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 910 case SND_SOC_DAIFMT_CBS_CFS: 911 wm9081->master = 0; 912 break; 913 case SND_SOC_DAIFMT_CBS_CFM: 914 aif2 |= WM9081_LRCLK_DIR; 915 wm9081->master = 1; 916 break; 917 case SND_SOC_DAIFMT_CBM_CFS: 918 aif2 |= WM9081_BCLK_DIR; 919 wm9081->master = 1; 920 break; 921 case SND_SOC_DAIFMT_CBM_CFM: 922 aif2 |= WM9081_LRCLK_DIR | WM9081_BCLK_DIR; 923 wm9081->master = 1; 924 break; 925 default: 926 return -EINVAL; 927 } 928 929 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 930 case SND_SOC_DAIFMT_DSP_B: 931 aif2 |= WM9081_AIF_LRCLK_INV; 932 fallthrough; 933 case SND_SOC_DAIFMT_DSP_A: 934 aif2 |= 0x3; 935 break; 936 case SND_SOC_DAIFMT_I2S: 937 aif2 |= 0x2; 938 break; 939 case SND_SOC_DAIFMT_RIGHT_J: 940 break; 941 case SND_SOC_DAIFMT_LEFT_J: 942 aif2 |= 0x1; 943 break; 944 default: 945 return -EINVAL; 946 } 947 948 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 949 case SND_SOC_DAIFMT_DSP_A: 950 case SND_SOC_DAIFMT_DSP_B: 951 /* frame inversion not valid for DSP modes */ 952 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 953 case SND_SOC_DAIFMT_NB_NF: 954 break; 955 case SND_SOC_DAIFMT_IB_NF: 956 aif2 |= WM9081_AIF_BCLK_INV; 957 break; 958 default: 959 return -EINVAL; 960 } 961 break; 962 963 case SND_SOC_DAIFMT_I2S: 964 case SND_SOC_DAIFMT_RIGHT_J: 965 case SND_SOC_DAIFMT_LEFT_J: 966 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 967 case SND_SOC_DAIFMT_NB_NF: 968 break; 969 case SND_SOC_DAIFMT_IB_IF: 970 aif2 |= WM9081_AIF_BCLK_INV | WM9081_AIF_LRCLK_INV; 971 break; 972 case SND_SOC_DAIFMT_IB_NF: 973 aif2 |= WM9081_AIF_BCLK_INV; 974 break; 975 case SND_SOC_DAIFMT_NB_IF: 976 aif2 |= WM9081_AIF_LRCLK_INV; 977 break; 978 default: 979 return -EINVAL; 980 } 981 break; 982 default: 983 return -EINVAL; 984 } 985 986 snd_soc_component_write(component, WM9081_AUDIO_INTERFACE_2, aif2); 987 988 return 0; 989 } 990 991 static int wm9081_hw_params(struct snd_pcm_substream *substream, 992 struct snd_pcm_hw_params *params, 993 struct snd_soc_dai *dai) 994 { 995 struct snd_soc_component *component = dai->component; 996 struct wm9081_priv *wm9081 = snd_soc_component_get_drvdata(component); 997 int ret, i, best, best_val, cur_val; 998 unsigned int clk_ctrl2, aif1, aif2, aif3, aif4; 999 1000 clk_ctrl2 = snd_soc_component_read(component, WM9081_CLOCK_CONTROL_2); 1001 clk_ctrl2 &= ~(WM9081_CLK_SYS_RATE_MASK | WM9081_SAMPLE_RATE_MASK); 1002 1003 aif1 = snd_soc_component_read(component, WM9081_AUDIO_INTERFACE_1); 1004 1005 aif2 = snd_soc_component_read(component, WM9081_AUDIO_INTERFACE_2); 1006 aif2 &= ~WM9081_AIF_WL_MASK; 1007 1008 aif3 = snd_soc_component_read(component, WM9081_AUDIO_INTERFACE_3); 1009 aif3 &= ~WM9081_BCLK_DIV_MASK; 1010 1011 aif4 = snd_soc_component_read(component, WM9081_AUDIO_INTERFACE_4); 1012 aif4 &= ~WM9081_LRCLK_RATE_MASK; 1013 1014 wm9081->fs = params_rate(params); 1015 1016 if (wm9081->tdm_width) { 1017 /* If TDM is set up then that fixes our BCLK. */ 1018 int slots = ((aif1 & WM9081_AIFDAC_TDM_MODE_MASK) >> 1019 WM9081_AIFDAC_TDM_MODE_SHIFT) + 1; 1020 1021 wm9081->bclk = wm9081->fs * wm9081->tdm_width * slots; 1022 } else { 1023 /* Otherwise work out a BCLK from the sample size */ 1024 wm9081->bclk = 2 * wm9081->fs; 1025 1026 switch (params_width(params)) { 1027 case 16: 1028 wm9081->bclk *= 16; 1029 break; 1030 case 20: 1031 wm9081->bclk *= 20; 1032 aif2 |= 0x4; 1033 break; 1034 case 24: 1035 wm9081->bclk *= 24; 1036 aif2 |= 0x8; 1037 break; 1038 case 32: 1039 wm9081->bclk *= 32; 1040 aif2 |= 0xc; 1041 break; 1042 default: 1043 return -EINVAL; 1044 } 1045 } 1046 1047 dev_dbg(component->dev, "Target BCLK is %dHz\n", wm9081->bclk); 1048 1049 ret = configure_clock(component); 1050 if (ret != 0) 1051 return ret; 1052 1053 /* Select nearest CLK_SYS_RATE */ 1054 best = 0; 1055 best_val = abs((wm9081->sysclk_rate / clk_sys_rates[0].ratio) 1056 - wm9081->fs); 1057 for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) { 1058 cur_val = abs((wm9081->sysclk_rate / 1059 clk_sys_rates[i].ratio) - wm9081->fs); 1060 if (cur_val < best_val) { 1061 best = i; 1062 best_val = cur_val; 1063 } 1064 } 1065 dev_dbg(component->dev, "Selected CLK_SYS_RATIO of %d\n", 1066 clk_sys_rates[best].ratio); 1067 clk_ctrl2 |= (clk_sys_rates[best].clk_sys_rate 1068 << WM9081_CLK_SYS_RATE_SHIFT); 1069 1070 /* SAMPLE_RATE */ 1071 best = 0; 1072 best_val = abs(wm9081->fs - sample_rates[0].rate); 1073 for (i = 1; i < ARRAY_SIZE(sample_rates); i++) { 1074 /* Closest match */ 1075 cur_val = abs(wm9081->fs - sample_rates[i].rate); 1076 if (cur_val < best_val) { 1077 best = i; 1078 best_val = cur_val; 1079 } 1080 } 1081 dev_dbg(component->dev, "Selected SAMPLE_RATE of %dHz\n", 1082 sample_rates[best].rate); 1083 clk_ctrl2 |= (sample_rates[best].sample_rate 1084 << WM9081_SAMPLE_RATE_SHIFT); 1085 1086 /* BCLK_DIV */ 1087 best = 0; 1088 best_val = INT_MAX; 1089 for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) { 1090 cur_val = ((wm9081->sysclk_rate * 10) / bclk_divs[i].div) 1091 - wm9081->bclk; 1092 if (cur_val < 0) /* Table is sorted */ 1093 break; 1094 if (cur_val < best_val) { 1095 best = i; 1096 best_val = cur_val; 1097 } 1098 } 1099 wm9081->bclk = (wm9081->sysclk_rate * 10) / bclk_divs[best].div; 1100 dev_dbg(component->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n", 1101 bclk_divs[best].div, wm9081->bclk); 1102 aif3 |= bclk_divs[best].bclk_div; 1103 1104 /* LRCLK is a simple fraction of BCLK */ 1105 dev_dbg(component->dev, "LRCLK_RATE is %d\n", wm9081->bclk / wm9081->fs); 1106 aif4 |= wm9081->bclk / wm9081->fs; 1107 1108 /* Apply a ReTune Mobile configuration if it's in use */ 1109 if (wm9081->pdata.num_retune_configs) { 1110 struct wm9081_pdata *pdata = &wm9081->pdata; 1111 struct wm9081_retune_mobile_setting *s; 1112 int eq1; 1113 1114 best = 0; 1115 best_val = abs(pdata->retune_configs[0].rate - wm9081->fs); 1116 for (i = 0; i < pdata->num_retune_configs; i++) { 1117 cur_val = abs(pdata->retune_configs[i].rate - 1118 wm9081->fs); 1119 if (cur_val < best_val) { 1120 best_val = cur_val; 1121 best = i; 1122 } 1123 } 1124 s = &pdata->retune_configs[best]; 1125 1126 dev_dbg(component->dev, "ReTune Mobile %s tuned for %dHz\n", 1127 s->name, s->rate); 1128 1129 /* If the EQ is enabled then disable it while we write out */ 1130 eq1 = snd_soc_component_read(component, WM9081_EQ_1) & WM9081_EQ_ENA; 1131 if (eq1 & WM9081_EQ_ENA) 1132 snd_soc_component_write(component, WM9081_EQ_1, 0); 1133 1134 /* Write out the other values */ 1135 for (i = 1; i < ARRAY_SIZE(s->config); i++) 1136 snd_soc_component_write(component, WM9081_EQ_1 + i, s->config[i]); 1137 1138 eq1 |= (s->config[0] & ~WM9081_EQ_ENA); 1139 snd_soc_component_write(component, WM9081_EQ_1, eq1); 1140 } 1141 1142 snd_soc_component_write(component, WM9081_CLOCK_CONTROL_2, clk_ctrl2); 1143 snd_soc_component_write(component, WM9081_AUDIO_INTERFACE_2, aif2); 1144 snd_soc_component_write(component, WM9081_AUDIO_INTERFACE_3, aif3); 1145 snd_soc_component_write(component, WM9081_AUDIO_INTERFACE_4, aif4); 1146 1147 return 0; 1148 } 1149 1150 static int wm9081_mute(struct snd_soc_dai *codec_dai, int mute, int direction) 1151 { 1152 struct snd_soc_component *component = codec_dai->component; 1153 unsigned int reg; 1154 1155 reg = snd_soc_component_read(component, WM9081_DAC_DIGITAL_2); 1156 1157 if (mute) 1158 reg |= WM9081_DAC_MUTE; 1159 else 1160 reg &= ~WM9081_DAC_MUTE; 1161 1162 snd_soc_component_write(component, WM9081_DAC_DIGITAL_2, reg); 1163 1164 return 0; 1165 } 1166 1167 static int wm9081_set_sysclk(struct snd_soc_component *component, int clk_id, 1168 int source, unsigned int freq, int dir) 1169 { 1170 struct wm9081_priv *wm9081 = snd_soc_component_get_drvdata(component); 1171 1172 switch (clk_id) { 1173 case WM9081_SYSCLK_MCLK: 1174 case WM9081_SYSCLK_FLL_MCLK: 1175 wm9081->sysclk_source = clk_id; 1176 wm9081->mclk_rate = freq; 1177 break; 1178 1179 default: 1180 return -EINVAL; 1181 } 1182 1183 return 0; 1184 } 1185 1186 static int wm9081_set_tdm_slot(struct snd_soc_dai *dai, 1187 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width) 1188 { 1189 struct snd_soc_component *component = dai->component; 1190 struct wm9081_priv *wm9081 = snd_soc_component_get_drvdata(component); 1191 unsigned int aif1 = snd_soc_component_read(component, WM9081_AUDIO_INTERFACE_1); 1192 1193 aif1 &= ~(WM9081_AIFDAC_TDM_SLOT_MASK | WM9081_AIFDAC_TDM_MODE_MASK); 1194 1195 if (slots < 0 || slots > 4) 1196 return -EINVAL; 1197 1198 wm9081->tdm_width = slot_width; 1199 1200 if (slots == 0) 1201 slots = 1; 1202 1203 aif1 |= (slots - 1) << WM9081_AIFDAC_TDM_MODE_SHIFT; 1204 1205 switch (rx_mask) { 1206 case 1: 1207 break; 1208 case 2: 1209 aif1 |= 0x10; 1210 break; 1211 case 4: 1212 aif1 |= 0x20; 1213 break; 1214 case 8: 1215 aif1 |= 0x30; 1216 break; 1217 default: 1218 return -EINVAL; 1219 } 1220 1221 snd_soc_component_write(component, WM9081_AUDIO_INTERFACE_1, aif1); 1222 1223 return 0; 1224 } 1225 1226 #define WM9081_RATES SNDRV_PCM_RATE_8000_96000 1227 1228 #define WM9081_FORMATS \ 1229 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 1230 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 1231 1232 static const struct snd_soc_dai_ops wm9081_dai_ops = { 1233 .hw_params = wm9081_hw_params, 1234 .set_fmt = wm9081_set_dai_fmt, 1235 .mute_stream = wm9081_mute, 1236 .set_tdm_slot = wm9081_set_tdm_slot, 1237 .no_capture_mute = 1, 1238 }; 1239 1240 /* We report two channels because the CODEC processes a stereo signal, even 1241 * though it is only capable of handling a mono output. 1242 */ 1243 static struct snd_soc_dai_driver wm9081_dai = { 1244 .name = "wm9081-hifi", 1245 .playback = { 1246 .stream_name = "AIF", 1247 .channels_min = 1, 1248 .channels_max = 2, 1249 .rates = WM9081_RATES, 1250 .formats = WM9081_FORMATS, 1251 }, 1252 .ops = &wm9081_dai_ops, 1253 }; 1254 1255 static int wm9081_probe(struct snd_soc_component *component) 1256 { 1257 struct wm9081_priv *wm9081 = snd_soc_component_get_drvdata(component); 1258 1259 /* Enable zero cross by default */ 1260 snd_soc_component_update_bits(component, WM9081_ANALOGUE_LINEOUT, 1261 WM9081_LINEOUTZC, WM9081_LINEOUTZC); 1262 snd_soc_component_update_bits(component, WM9081_ANALOGUE_SPEAKER_PGA, 1263 WM9081_SPKPGAZC, WM9081_SPKPGAZC); 1264 1265 if (!wm9081->pdata.num_retune_configs) { 1266 dev_dbg(component->dev, 1267 "No ReTune Mobile data, using normal EQ\n"); 1268 snd_soc_add_component_controls(component, wm9081_eq_controls, 1269 ARRAY_SIZE(wm9081_eq_controls)); 1270 } 1271 1272 return 0; 1273 } 1274 1275 static const struct snd_soc_component_driver soc_component_dev_wm9081 = { 1276 .probe = wm9081_probe, 1277 .set_sysclk = wm9081_set_sysclk, 1278 .set_bias_level = wm9081_set_bias_level, 1279 .controls = wm9081_snd_controls, 1280 .num_controls = ARRAY_SIZE(wm9081_snd_controls), 1281 .dapm_widgets = wm9081_dapm_widgets, 1282 .num_dapm_widgets = ARRAY_SIZE(wm9081_dapm_widgets), 1283 .dapm_routes = wm9081_audio_paths, 1284 .num_dapm_routes = ARRAY_SIZE(wm9081_audio_paths), 1285 .use_pmdown_time = 1, 1286 .endianness = 1, 1287 .non_legacy_dai_naming = 1, 1288 }; 1289 1290 static const struct regmap_config wm9081_regmap = { 1291 .reg_bits = 8, 1292 .val_bits = 16, 1293 1294 .max_register = WM9081_MAX_REGISTER, 1295 .reg_defaults = wm9081_reg, 1296 .num_reg_defaults = ARRAY_SIZE(wm9081_reg), 1297 .volatile_reg = wm9081_volatile_register, 1298 .readable_reg = wm9081_readable_register, 1299 .cache_type = REGCACHE_RBTREE, 1300 }; 1301 1302 static int wm9081_i2c_probe(struct i2c_client *i2c) 1303 { 1304 struct wm9081_priv *wm9081; 1305 unsigned int reg; 1306 int ret; 1307 1308 wm9081 = devm_kzalloc(&i2c->dev, sizeof(struct wm9081_priv), 1309 GFP_KERNEL); 1310 if (wm9081 == NULL) 1311 return -ENOMEM; 1312 1313 i2c_set_clientdata(i2c, wm9081); 1314 1315 wm9081->regmap = devm_regmap_init_i2c(i2c, &wm9081_regmap); 1316 if (IS_ERR(wm9081->regmap)) { 1317 ret = PTR_ERR(wm9081->regmap); 1318 dev_err(&i2c->dev, "regmap_init() failed: %d\n", ret); 1319 return ret; 1320 } 1321 1322 ret = regmap_read(wm9081->regmap, WM9081_SOFTWARE_RESET, ®); 1323 if (ret != 0) { 1324 dev_err(&i2c->dev, "Failed to read chip ID: %d\n", ret); 1325 return ret; 1326 } 1327 if (reg != 0x9081) { 1328 dev_err(&i2c->dev, "Device is not a WM9081: ID=0x%x\n", reg); 1329 return -EINVAL; 1330 } 1331 1332 ret = wm9081_reset(wm9081->regmap); 1333 if (ret < 0) { 1334 dev_err(&i2c->dev, "Failed to issue reset\n"); 1335 return ret; 1336 } 1337 1338 if (dev_get_platdata(&i2c->dev)) 1339 memcpy(&wm9081->pdata, dev_get_platdata(&i2c->dev), 1340 sizeof(wm9081->pdata)); 1341 1342 reg = 0; 1343 if (wm9081->pdata.irq_high) 1344 reg |= WM9081_IRQ_POL; 1345 if (!wm9081->pdata.irq_cmos) 1346 reg |= WM9081_IRQ_OP_CTRL; 1347 regmap_update_bits(wm9081->regmap, WM9081_INTERRUPT_CONTROL, 1348 WM9081_IRQ_POL | WM9081_IRQ_OP_CTRL, reg); 1349 1350 regcache_cache_only(wm9081->regmap, true); 1351 1352 ret = devm_snd_soc_register_component(&i2c->dev, 1353 &soc_component_dev_wm9081, &wm9081_dai, 1); 1354 if (ret < 0) 1355 return ret; 1356 1357 return 0; 1358 } 1359 1360 static int wm9081_i2c_remove(struct i2c_client *client) 1361 { 1362 return 0; 1363 } 1364 1365 static const struct i2c_device_id wm9081_i2c_id[] = { 1366 { "wm9081", 0 }, 1367 { } 1368 }; 1369 MODULE_DEVICE_TABLE(i2c, wm9081_i2c_id); 1370 1371 static struct i2c_driver wm9081_i2c_driver = { 1372 .driver = { 1373 .name = "wm9081", 1374 }, 1375 .probe_new = wm9081_i2c_probe, 1376 .remove = wm9081_i2c_remove, 1377 .id_table = wm9081_i2c_id, 1378 }; 1379 1380 module_i2c_driver(wm9081_i2c_driver); 1381 1382 MODULE_DESCRIPTION("ASoC WM9081 driver"); 1383 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); 1384 MODULE_LICENSE("GPL"); 1385