1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * wm8904.c -- WM8904 ALSA SoC Audio driver 4 * 5 * Copyright 2009-12 Wolfson Microelectronics plc 6 * 7 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> 8 */ 9 10 #include <linux/clk.h> 11 #include <linux/module.h> 12 #include <linux/init.h> 13 #include <linux/delay.h> 14 #include <linux/pm.h> 15 #include <linux/i2c.h> 16 #include <linux/regmap.h> 17 #include <linux/regulator/consumer.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 #include <sound/wm8904.h> 26 27 #include "wm8904.h" 28 29 enum wm8904_type { 30 WM8904, 31 WM8912, 32 }; 33 34 #define WM8904_NUM_DCS_CHANNELS 4 35 36 #define WM8904_NUM_SUPPLIES 5 37 static const char *wm8904_supply_names[WM8904_NUM_SUPPLIES] = { 38 "DCVDD", 39 "DBVDD", 40 "AVDD", 41 "CPVDD", 42 "MICVDD", 43 }; 44 45 /* codec private data */ 46 struct wm8904_priv { 47 struct regmap *regmap; 48 struct clk *mclk; 49 50 enum wm8904_type devtype; 51 52 struct regulator_bulk_data supplies[WM8904_NUM_SUPPLIES]; 53 54 struct wm8904_pdata *pdata; 55 56 int deemph; 57 58 /* Platform provided DRC configuration */ 59 const char **drc_texts; 60 int drc_cfg; 61 struct soc_enum drc_enum; 62 63 /* Platform provided ReTune mobile configuration */ 64 int num_retune_mobile_texts; 65 const char **retune_mobile_texts; 66 int retune_mobile_cfg; 67 struct soc_enum retune_mobile_enum; 68 69 /* FLL setup */ 70 int fll_src; 71 int fll_fref; 72 int fll_fout; 73 74 /* Clocking configuration */ 75 unsigned int mclk_rate; 76 int sysclk_src; 77 unsigned int sysclk_rate; 78 79 int tdm_width; 80 int tdm_slots; 81 int bclk; 82 int fs; 83 84 /* DC servo configuration - cached offset values */ 85 int dcs_state[WM8904_NUM_DCS_CHANNELS]; 86 }; 87 88 static const struct reg_default wm8904_reg_defaults[] = { 89 { 4, 0x0018 }, /* R4 - Bias Control 0 */ 90 { 5, 0x0000 }, /* R5 - VMID Control 0 */ 91 { 6, 0x0000 }, /* R6 - Mic Bias Control 0 */ 92 { 7, 0x0000 }, /* R7 - Mic Bias Control 1 */ 93 { 8, 0x0001 }, /* R8 - Analogue DAC 0 */ 94 { 9, 0x9696 }, /* R9 - mic Filter Control */ 95 { 10, 0x0001 }, /* R10 - Analogue ADC 0 */ 96 { 12, 0x0000 }, /* R12 - Power Management 0 */ 97 { 14, 0x0000 }, /* R14 - Power Management 2 */ 98 { 15, 0x0000 }, /* R15 - Power Management 3 */ 99 { 18, 0x0000 }, /* R18 - Power Management 6 */ 100 { 20, 0x945E }, /* R20 - Clock Rates 0 */ 101 { 21, 0x0C05 }, /* R21 - Clock Rates 1 */ 102 { 22, 0x0006 }, /* R22 - Clock Rates 2 */ 103 { 24, 0x0050 }, /* R24 - Audio Interface 0 */ 104 { 25, 0x000A }, /* R25 - Audio Interface 1 */ 105 { 26, 0x00E4 }, /* R26 - Audio Interface 2 */ 106 { 27, 0x0040 }, /* R27 - Audio Interface 3 */ 107 { 30, 0x00C0 }, /* R30 - DAC Digital Volume Left */ 108 { 31, 0x00C0 }, /* R31 - DAC Digital Volume Right */ 109 { 32, 0x0000 }, /* R32 - DAC Digital 0 */ 110 { 33, 0x0008 }, /* R33 - DAC Digital 1 */ 111 { 36, 0x00C0 }, /* R36 - ADC Digital Volume Left */ 112 { 37, 0x00C0 }, /* R37 - ADC Digital Volume Right */ 113 { 38, 0x0010 }, /* R38 - ADC Digital 0 */ 114 { 39, 0x0000 }, /* R39 - Digital Microphone 0 */ 115 { 40, 0x01AF }, /* R40 - DRC 0 */ 116 { 41, 0x3248 }, /* R41 - DRC 1 */ 117 { 42, 0x0000 }, /* R42 - DRC 2 */ 118 { 43, 0x0000 }, /* R43 - DRC 3 */ 119 { 44, 0x0085 }, /* R44 - Analogue Left Input 0 */ 120 { 45, 0x0085 }, /* R45 - Analogue Right Input 0 */ 121 { 46, 0x0044 }, /* R46 - Analogue Left Input 1 */ 122 { 47, 0x0044 }, /* R47 - Analogue Right Input 1 */ 123 { 57, 0x002D }, /* R57 - Analogue OUT1 Left */ 124 { 58, 0x002D }, /* R58 - Analogue OUT1 Right */ 125 { 59, 0x0039 }, /* R59 - Analogue OUT2 Left */ 126 { 60, 0x0039 }, /* R60 - Analogue OUT2 Right */ 127 { 61, 0x0000 }, /* R61 - Analogue OUT12 ZC */ 128 { 67, 0x0000 }, /* R67 - DC Servo 0 */ 129 { 69, 0xAAAA }, /* R69 - DC Servo 2 */ 130 { 71, 0xAAAA }, /* R71 - DC Servo 4 */ 131 { 72, 0xAAAA }, /* R72 - DC Servo 5 */ 132 { 90, 0x0000 }, /* R90 - Analogue HP 0 */ 133 { 94, 0x0000 }, /* R94 - Analogue Lineout 0 */ 134 { 98, 0x0000 }, /* R98 - Charge Pump 0 */ 135 { 104, 0x0004 }, /* R104 - Class W 0 */ 136 { 108, 0x0000 }, /* R108 - Write Sequencer 0 */ 137 { 109, 0x0000 }, /* R109 - Write Sequencer 1 */ 138 { 110, 0x0000 }, /* R110 - Write Sequencer 2 */ 139 { 111, 0x0000 }, /* R111 - Write Sequencer 3 */ 140 { 112, 0x0000 }, /* R112 - Write Sequencer 4 */ 141 { 116, 0x0000 }, /* R116 - FLL Control 1 */ 142 { 117, 0x0007 }, /* R117 - FLL Control 2 */ 143 { 118, 0x0000 }, /* R118 - FLL Control 3 */ 144 { 119, 0x2EE0 }, /* R119 - FLL Control 4 */ 145 { 120, 0x0004 }, /* R120 - FLL Control 5 */ 146 { 121, 0x0014 }, /* R121 - GPIO Control 1 */ 147 { 122, 0x0010 }, /* R122 - GPIO Control 2 */ 148 { 123, 0x0010 }, /* R123 - GPIO Control 3 */ 149 { 124, 0x0000 }, /* R124 - GPIO Control 4 */ 150 { 126, 0x0000 }, /* R126 - Digital Pulls */ 151 { 128, 0xFFFF }, /* R128 - Interrupt Status Mask */ 152 { 129, 0x0000 }, /* R129 - Interrupt Polarity */ 153 { 130, 0x0000 }, /* R130 - Interrupt Debounce */ 154 { 134, 0x0000 }, /* R134 - EQ1 */ 155 { 135, 0x000C }, /* R135 - EQ2 */ 156 { 136, 0x000C }, /* R136 - EQ3 */ 157 { 137, 0x000C }, /* R137 - EQ4 */ 158 { 138, 0x000C }, /* R138 - EQ5 */ 159 { 139, 0x000C }, /* R139 - EQ6 */ 160 { 140, 0x0FCA }, /* R140 - EQ7 */ 161 { 141, 0x0400 }, /* R141 - EQ8 */ 162 { 142, 0x00D8 }, /* R142 - EQ9 */ 163 { 143, 0x1EB5 }, /* R143 - EQ10 */ 164 { 144, 0xF145 }, /* R144 - EQ11 */ 165 { 145, 0x0B75 }, /* R145 - EQ12 */ 166 { 146, 0x01C5 }, /* R146 - EQ13 */ 167 { 147, 0x1C58 }, /* R147 - EQ14 */ 168 { 148, 0xF373 }, /* R148 - EQ15 */ 169 { 149, 0x0A54 }, /* R149 - EQ16 */ 170 { 150, 0x0558 }, /* R150 - EQ17 */ 171 { 151, 0x168E }, /* R151 - EQ18 */ 172 { 152, 0xF829 }, /* R152 - EQ19 */ 173 { 153, 0x07AD }, /* R153 - EQ20 */ 174 { 154, 0x1103 }, /* R154 - EQ21 */ 175 { 155, 0x0564 }, /* R155 - EQ22 */ 176 { 156, 0x0559 }, /* R156 - EQ23 */ 177 { 157, 0x4000 }, /* R157 - EQ24 */ 178 { 161, 0x0000 }, /* R161 - Control Interface Test 1 */ 179 { 204, 0x0000 }, /* R204 - Analogue Output Bias 0 */ 180 { 247, 0x0000 }, /* R247 - FLL NCO Test 0 */ 181 { 248, 0x0019 }, /* R248 - FLL NCO Test 1 */ 182 }; 183 184 static bool wm8904_volatile_register(struct device *dev, unsigned int reg) 185 { 186 switch (reg) { 187 case WM8904_SW_RESET_AND_ID: 188 case WM8904_REVISION: 189 case WM8904_DC_SERVO_1: 190 case WM8904_DC_SERVO_6: 191 case WM8904_DC_SERVO_7: 192 case WM8904_DC_SERVO_8: 193 case WM8904_DC_SERVO_9: 194 case WM8904_DC_SERVO_READBACK_0: 195 case WM8904_INTERRUPT_STATUS: 196 return true; 197 default: 198 return false; 199 } 200 } 201 202 static bool wm8904_readable_register(struct device *dev, unsigned int reg) 203 { 204 switch (reg) { 205 case WM8904_SW_RESET_AND_ID: 206 case WM8904_REVISION: 207 case WM8904_BIAS_CONTROL_0: 208 case WM8904_VMID_CONTROL_0: 209 case WM8904_MIC_BIAS_CONTROL_0: 210 case WM8904_MIC_BIAS_CONTROL_1: 211 case WM8904_ANALOGUE_DAC_0: 212 case WM8904_MIC_FILTER_CONTROL: 213 case WM8904_ANALOGUE_ADC_0: 214 case WM8904_POWER_MANAGEMENT_0: 215 case WM8904_POWER_MANAGEMENT_2: 216 case WM8904_POWER_MANAGEMENT_3: 217 case WM8904_POWER_MANAGEMENT_6: 218 case WM8904_CLOCK_RATES_0: 219 case WM8904_CLOCK_RATES_1: 220 case WM8904_CLOCK_RATES_2: 221 case WM8904_AUDIO_INTERFACE_0: 222 case WM8904_AUDIO_INTERFACE_1: 223 case WM8904_AUDIO_INTERFACE_2: 224 case WM8904_AUDIO_INTERFACE_3: 225 case WM8904_DAC_DIGITAL_VOLUME_LEFT: 226 case WM8904_DAC_DIGITAL_VOLUME_RIGHT: 227 case WM8904_DAC_DIGITAL_0: 228 case WM8904_DAC_DIGITAL_1: 229 case WM8904_ADC_DIGITAL_VOLUME_LEFT: 230 case WM8904_ADC_DIGITAL_VOLUME_RIGHT: 231 case WM8904_ADC_DIGITAL_0: 232 case WM8904_DIGITAL_MICROPHONE_0: 233 case WM8904_DRC_0: 234 case WM8904_DRC_1: 235 case WM8904_DRC_2: 236 case WM8904_DRC_3: 237 case WM8904_ANALOGUE_LEFT_INPUT_0: 238 case WM8904_ANALOGUE_RIGHT_INPUT_0: 239 case WM8904_ANALOGUE_LEFT_INPUT_1: 240 case WM8904_ANALOGUE_RIGHT_INPUT_1: 241 case WM8904_ANALOGUE_OUT1_LEFT: 242 case WM8904_ANALOGUE_OUT1_RIGHT: 243 case WM8904_ANALOGUE_OUT2_LEFT: 244 case WM8904_ANALOGUE_OUT2_RIGHT: 245 case WM8904_ANALOGUE_OUT12_ZC: 246 case WM8904_DC_SERVO_0: 247 case WM8904_DC_SERVO_1: 248 case WM8904_DC_SERVO_2: 249 case WM8904_DC_SERVO_4: 250 case WM8904_DC_SERVO_5: 251 case WM8904_DC_SERVO_6: 252 case WM8904_DC_SERVO_7: 253 case WM8904_DC_SERVO_8: 254 case WM8904_DC_SERVO_9: 255 case WM8904_DC_SERVO_READBACK_0: 256 case WM8904_ANALOGUE_HP_0: 257 case WM8904_ANALOGUE_LINEOUT_0: 258 case WM8904_CHARGE_PUMP_0: 259 case WM8904_CLASS_W_0: 260 case WM8904_WRITE_SEQUENCER_0: 261 case WM8904_WRITE_SEQUENCER_1: 262 case WM8904_WRITE_SEQUENCER_2: 263 case WM8904_WRITE_SEQUENCER_3: 264 case WM8904_WRITE_SEQUENCER_4: 265 case WM8904_FLL_CONTROL_1: 266 case WM8904_FLL_CONTROL_2: 267 case WM8904_FLL_CONTROL_3: 268 case WM8904_FLL_CONTROL_4: 269 case WM8904_FLL_CONTROL_5: 270 case WM8904_GPIO_CONTROL_1: 271 case WM8904_GPIO_CONTROL_2: 272 case WM8904_GPIO_CONTROL_3: 273 case WM8904_GPIO_CONTROL_4: 274 case WM8904_DIGITAL_PULLS: 275 case WM8904_INTERRUPT_STATUS: 276 case WM8904_INTERRUPT_STATUS_MASK: 277 case WM8904_INTERRUPT_POLARITY: 278 case WM8904_INTERRUPT_DEBOUNCE: 279 case WM8904_EQ1: 280 case WM8904_EQ2: 281 case WM8904_EQ3: 282 case WM8904_EQ4: 283 case WM8904_EQ5: 284 case WM8904_EQ6: 285 case WM8904_EQ7: 286 case WM8904_EQ8: 287 case WM8904_EQ9: 288 case WM8904_EQ10: 289 case WM8904_EQ11: 290 case WM8904_EQ12: 291 case WM8904_EQ13: 292 case WM8904_EQ14: 293 case WM8904_EQ15: 294 case WM8904_EQ16: 295 case WM8904_EQ17: 296 case WM8904_EQ18: 297 case WM8904_EQ19: 298 case WM8904_EQ20: 299 case WM8904_EQ21: 300 case WM8904_EQ22: 301 case WM8904_EQ23: 302 case WM8904_EQ24: 303 case WM8904_CONTROL_INTERFACE_TEST_1: 304 case WM8904_ADC_TEST_0: 305 case WM8904_ANALOGUE_OUTPUT_BIAS_0: 306 case WM8904_FLL_NCO_TEST_0: 307 case WM8904_FLL_NCO_TEST_1: 308 return true; 309 default: 310 return false; 311 } 312 } 313 314 static int wm8904_configure_clocking(struct snd_soc_component *component) 315 { 316 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 317 unsigned int clock0, clock2, rate; 318 319 /* Gate the clock while we're updating to avoid misclocking */ 320 clock2 = snd_soc_component_read(component, WM8904_CLOCK_RATES_2); 321 snd_soc_component_update_bits(component, WM8904_CLOCK_RATES_2, 322 WM8904_SYSCLK_SRC, 0); 323 324 /* This should be done on init() for bypass paths */ 325 switch (wm8904->sysclk_src) { 326 case WM8904_CLK_MCLK: 327 dev_dbg(component->dev, "Using %dHz MCLK\n", wm8904->mclk_rate); 328 329 clock2 &= ~WM8904_SYSCLK_SRC; 330 rate = wm8904->mclk_rate; 331 332 /* Ensure the FLL is stopped */ 333 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_1, 334 WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0); 335 break; 336 337 case WM8904_CLK_FLL: 338 dev_dbg(component->dev, "Using %dHz FLL clock\n", 339 wm8904->fll_fout); 340 341 clock2 |= WM8904_SYSCLK_SRC; 342 rate = wm8904->fll_fout; 343 break; 344 345 default: 346 dev_err(component->dev, "System clock not configured\n"); 347 return -EINVAL; 348 } 349 350 /* SYSCLK shouldn't be over 13.5MHz */ 351 if (rate > 13500000) { 352 clock0 = WM8904_MCLK_DIV; 353 wm8904->sysclk_rate = rate / 2; 354 } else { 355 clock0 = 0; 356 wm8904->sysclk_rate = rate; 357 } 358 359 snd_soc_component_update_bits(component, WM8904_CLOCK_RATES_0, WM8904_MCLK_DIV, 360 clock0); 361 362 snd_soc_component_update_bits(component, WM8904_CLOCK_RATES_2, 363 WM8904_CLK_SYS_ENA | WM8904_SYSCLK_SRC, clock2); 364 365 dev_dbg(component->dev, "CLK_SYS is %dHz\n", wm8904->sysclk_rate); 366 367 return 0; 368 } 369 370 static void wm8904_set_drc(struct snd_soc_component *component) 371 { 372 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 373 struct wm8904_pdata *pdata = wm8904->pdata; 374 int save, i; 375 376 /* Save any enables; the configuration should clear them. */ 377 save = snd_soc_component_read(component, WM8904_DRC_0); 378 379 for (i = 0; i < WM8904_DRC_REGS; i++) 380 snd_soc_component_update_bits(component, WM8904_DRC_0 + i, 0xffff, 381 pdata->drc_cfgs[wm8904->drc_cfg].regs[i]); 382 383 /* Reenable the DRC */ 384 snd_soc_component_update_bits(component, WM8904_DRC_0, 385 WM8904_DRC_ENA | WM8904_DRC_DAC_PATH, save); 386 } 387 388 static int wm8904_put_drc_enum(struct snd_kcontrol *kcontrol, 389 struct snd_ctl_elem_value *ucontrol) 390 { 391 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 392 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 393 struct wm8904_pdata *pdata = wm8904->pdata; 394 int value = ucontrol->value.enumerated.item[0]; 395 396 if (value >= pdata->num_drc_cfgs) 397 return -EINVAL; 398 399 wm8904->drc_cfg = value; 400 401 wm8904_set_drc(component); 402 403 return 0; 404 } 405 406 static int wm8904_get_drc_enum(struct snd_kcontrol *kcontrol, 407 struct snd_ctl_elem_value *ucontrol) 408 { 409 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 410 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 411 412 ucontrol->value.enumerated.item[0] = wm8904->drc_cfg; 413 414 return 0; 415 } 416 417 static void wm8904_set_retune_mobile(struct snd_soc_component *component) 418 { 419 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 420 struct wm8904_pdata *pdata = wm8904->pdata; 421 int best, best_val, save, i, cfg; 422 423 if (!pdata || !wm8904->num_retune_mobile_texts) 424 return; 425 426 /* Find the version of the currently selected configuration 427 * with the nearest sample rate. */ 428 cfg = wm8904->retune_mobile_cfg; 429 best = 0; 430 best_val = INT_MAX; 431 for (i = 0; i < pdata->num_retune_mobile_cfgs; i++) { 432 if (strcmp(pdata->retune_mobile_cfgs[i].name, 433 wm8904->retune_mobile_texts[cfg]) == 0 && 434 abs(pdata->retune_mobile_cfgs[i].rate 435 - wm8904->fs) < best_val) { 436 best = i; 437 best_val = abs(pdata->retune_mobile_cfgs[i].rate 438 - wm8904->fs); 439 } 440 } 441 442 dev_dbg(component->dev, "ReTune Mobile %s/%dHz for %dHz sample rate\n", 443 pdata->retune_mobile_cfgs[best].name, 444 pdata->retune_mobile_cfgs[best].rate, 445 wm8904->fs); 446 447 /* The EQ will be disabled while reconfiguring it, remember the 448 * current configuration. 449 */ 450 save = snd_soc_component_read(component, WM8904_EQ1); 451 452 for (i = 0; i < WM8904_EQ_REGS; i++) 453 snd_soc_component_update_bits(component, WM8904_EQ1 + i, 0xffff, 454 pdata->retune_mobile_cfgs[best].regs[i]); 455 456 snd_soc_component_update_bits(component, WM8904_EQ1, WM8904_EQ_ENA, save); 457 } 458 459 static int wm8904_put_retune_mobile_enum(struct snd_kcontrol *kcontrol, 460 struct snd_ctl_elem_value *ucontrol) 461 { 462 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 463 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 464 struct wm8904_pdata *pdata = wm8904->pdata; 465 int value = ucontrol->value.enumerated.item[0]; 466 467 if (value >= pdata->num_retune_mobile_cfgs) 468 return -EINVAL; 469 470 wm8904->retune_mobile_cfg = value; 471 472 wm8904_set_retune_mobile(component); 473 474 return 0; 475 } 476 477 static int wm8904_get_retune_mobile_enum(struct snd_kcontrol *kcontrol, 478 struct snd_ctl_elem_value *ucontrol) 479 { 480 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 481 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 482 483 ucontrol->value.enumerated.item[0] = wm8904->retune_mobile_cfg; 484 485 return 0; 486 } 487 488 static int deemph_settings[] = { 0, 32000, 44100, 48000 }; 489 490 static int wm8904_set_deemph(struct snd_soc_component *component) 491 { 492 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 493 int val, i, best; 494 495 /* If we're using deemphasis select the nearest available sample 496 * rate. 497 */ 498 if (wm8904->deemph) { 499 best = 1; 500 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) { 501 if (abs(deemph_settings[i] - wm8904->fs) < 502 abs(deemph_settings[best] - wm8904->fs)) 503 best = i; 504 } 505 506 val = best << WM8904_DEEMPH_SHIFT; 507 } else { 508 val = 0; 509 } 510 511 dev_dbg(component->dev, "Set deemphasis %d\n", val); 512 513 return snd_soc_component_update_bits(component, WM8904_DAC_DIGITAL_1, 514 WM8904_DEEMPH_MASK, val); 515 } 516 517 static int wm8904_get_deemph(struct snd_kcontrol *kcontrol, 518 struct snd_ctl_elem_value *ucontrol) 519 { 520 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 521 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 522 523 ucontrol->value.integer.value[0] = wm8904->deemph; 524 return 0; 525 } 526 527 static int wm8904_put_deemph(struct snd_kcontrol *kcontrol, 528 struct snd_ctl_elem_value *ucontrol) 529 { 530 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 531 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 532 unsigned int deemph = ucontrol->value.integer.value[0]; 533 534 if (deemph > 1) 535 return -EINVAL; 536 537 wm8904->deemph = deemph; 538 539 return wm8904_set_deemph(component); 540 } 541 542 static const DECLARE_TLV_DB_SCALE(dac_boost_tlv, 0, 600, 0); 543 static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1); 544 static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0); 545 static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -3600, 300, 0); 546 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0); 547 548 static const char *hpf_mode_text[] = { 549 "Hi-fi", "Voice 1", "Voice 2", "Voice 3" 550 }; 551 552 static SOC_ENUM_SINGLE_DECL(hpf_mode, WM8904_ADC_DIGITAL_0, 5, 553 hpf_mode_text); 554 555 static int wm8904_adc_osr_put(struct snd_kcontrol *kcontrol, 556 struct snd_ctl_elem_value *ucontrol) 557 { 558 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 559 unsigned int val; 560 int ret; 561 562 ret = snd_soc_put_volsw(kcontrol, ucontrol); 563 if (ret < 0) 564 return ret; 565 566 if (ucontrol->value.integer.value[0]) 567 val = 0; 568 else 569 val = WM8904_ADC_128_OSR_TST_MODE | WM8904_ADC_BIASX1P5; 570 571 snd_soc_component_update_bits(component, WM8904_ADC_TEST_0, 572 WM8904_ADC_128_OSR_TST_MODE | WM8904_ADC_BIASX1P5, 573 val); 574 575 return ret; 576 } 577 578 static const struct snd_kcontrol_new wm8904_adc_snd_controls[] = { 579 SOC_DOUBLE_R_TLV("Digital Capture Volume", WM8904_ADC_DIGITAL_VOLUME_LEFT, 580 WM8904_ADC_DIGITAL_VOLUME_RIGHT, 1, 119, 0, digital_tlv), 581 582 /* No TLV since it depends on mode */ 583 SOC_DOUBLE_R("Capture Volume", WM8904_ANALOGUE_LEFT_INPUT_0, 584 WM8904_ANALOGUE_RIGHT_INPUT_0, 0, 31, 0), 585 SOC_DOUBLE_R("Capture Switch", WM8904_ANALOGUE_LEFT_INPUT_0, 586 WM8904_ANALOGUE_RIGHT_INPUT_0, 7, 1, 1), 587 588 SOC_SINGLE("High Pass Filter Switch", WM8904_ADC_DIGITAL_0, 4, 1, 0), 589 SOC_ENUM("High Pass Filter Mode", hpf_mode), 590 SOC_SINGLE_EXT("ADC 128x OSR Switch", WM8904_ANALOGUE_ADC_0, 0, 1, 0, 591 snd_soc_get_volsw, wm8904_adc_osr_put), 592 }; 593 594 static const char *drc_path_text[] = { 595 "ADC", "DAC" 596 }; 597 598 static SOC_ENUM_SINGLE_DECL(drc_path, WM8904_DRC_0, 14, drc_path_text); 599 600 static const struct snd_kcontrol_new wm8904_dac_snd_controls[] = { 601 SOC_SINGLE_TLV("Digital Playback Boost Volume", 602 WM8904_AUDIO_INTERFACE_0, 9, 3, 0, dac_boost_tlv), 603 SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8904_DAC_DIGITAL_VOLUME_LEFT, 604 WM8904_DAC_DIGITAL_VOLUME_RIGHT, 1, 96, 0, digital_tlv), 605 606 SOC_DOUBLE_R_TLV("Headphone Volume", WM8904_ANALOGUE_OUT1_LEFT, 607 WM8904_ANALOGUE_OUT1_RIGHT, 0, 63, 0, out_tlv), 608 SOC_DOUBLE_R("Headphone Switch", WM8904_ANALOGUE_OUT1_LEFT, 609 WM8904_ANALOGUE_OUT1_RIGHT, 8, 1, 1), 610 SOC_DOUBLE_R("Headphone ZC Switch", WM8904_ANALOGUE_OUT1_LEFT, 611 WM8904_ANALOGUE_OUT1_RIGHT, 6, 1, 0), 612 613 SOC_DOUBLE_R_TLV("Line Output Volume", WM8904_ANALOGUE_OUT2_LEFT, 614 WM8904_ANALOGUE_OUT2_RIGHT, 0, 63, 0, out_tlv), 615 SOC_DOUBLE_R("Line Output Switch", WM8904_ANALOGUE_OUT2_LEFT, 616 WM8904_ANALOGUE_OUT2_RIGHT, 8, 1, 1), 617 SOC_DOUBLE_R("Line Output ZC Switch", WM8904_ANALOGUE_OUT2_LEFT, 618 WM8904_ANALOGUE_OUT2_RIGHT, 6, 1, 0), 619 620 SOC_SINGLE("EQ Switch", WM8904_EQ1, 0, 1, 0), 621 SOC_SINGLE("DRC Switch", WM8904_DRC_0, 15, 1, 0), 622 SOC_ENUM("DRC Path", drc_path), 623 SOC_SINGLE("DAC OSRx2 Switch", WM8904_DAC_DIGITAL_1, 6, 1, 0), 624 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0, 625 wm8904_get_deemph, wm8904_put_deemph), 626 }; 627 628 static const struct snd_kcontrol_new wm8904_snd_controls[] = { 629 SOC_DOUBLE_TLV("Digital Sidetone Volume", WM8904_DAC_DIGITAL_0, 4, 8, 15, 0, 630 sidetone_tlv), 631 }; 632 633 static const struct snd_kcontrol_new wm8904_eq_controls[] = { 634 SOC_SINGLE_TLV("EQ1 Volume", WM8904_EQ2, 0, 24, 0, eq_tlv), 635 SOC_SINGLE_TLV("EQ2 Volume", WM8904_EQ3, 0, 24, 0, eq_tlv), 636 SOC_SINGLE_TLV("EQ3 Volume", WM8904_EQ4, 0, 24, 0, eq_tlv), 637 SOC_SINGLE_TLV("EQ4 Volume", WM8904_EQ5, 0, 24, 0, eq_tlv), 638 SOC_SINGLE_TLV("EQ5 Volume", WM8904_EQ6, 0, 24, 0, eq_tlv), 639 }; 640 641 static int cp_event(struct snd_soc_dapm_widget *w, 642 struct snd_kcontrol *kcontrol, int event) 643 { 644 if (WARN_ON(event != SND_SOC_DAPM_POST_PMU)) 645 return -EINVAL; 646 647 /* Maximum startup time */ 648 udelay(500); 649 650 return 0; 651 } 652 653 static int sysclk_event(struct snd_soc_dapm_widget *w, 654 struct snd_kcontrol *kcontrol, int event) 655 { 656 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); 657 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 658 659 switch (event) { 660 case SND_SOC_DAPM_PRE_PMU: 661 /* If we're using the FLL then we only start it when 662 * required; we assume that the configuration has been 663 * done previously and all we need to do is kick it 664 * off. 665 */ 666 switch (wm8904->sysclk_src) { 667 case WM8904_CLK_FLL: 668 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_1, 669 WM8904_FLL_OSC_ENA, 670 WM8904_FLL_OSC_ENA); 671 672 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_1, 673 WM8904_FLL_ENA, 674 WM8904_FLL_ENA); 675 break; 676 677 default: 678 break; 679 } 680 break; 681 682 case SND_SOC_DAPM_POST_PMD: 683 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_1, 684 WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0); 685 break; 686 } 687 688 return 0; 689 } 690 691 static int out_pga_event(struct snd_soc_dapm_widget *w, 692 struct snd_kcontrol *kcontrol, int event) 693 { 694 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); 695 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 696 int reg, val; 697 int dcs_mask; 698 int dcs_l, dcs_r; 699 int dcs_l_reg, dcs_r_reg; 700 int timeout; 701 int pwr_reg; 702 703 /* This code is shared between HP and LINEOUT; we do all our 704 * power management in stereo pairs to avoid latency issues so 705 * we reuse shift to identify which rather than strcmp() the 706 * name. */ 707 reg = w->shift; 708 709 switch (reg) { 710 case WM8904_ANALOGUE_HP_0: 711 pwr_reg = WM8904_POWER_MANAGEMENT_2; 712 dcs_mask = WM8904_DCS_ENA_CHAN_0 | WM8904_DCS_ENA_CHAN_1; 713 dcs_r_reg = WM8904_DC_SERVO_8; 714 dcs_l_reg = WM8904_DC_SERVO_9; 715 dcs_l = 0; 716 dcs_r = 1; 717 break; 718 case WM8904_ANALOGUE_LINEOUT_0: 719 pwr_reg = WM8904_POWER_MANAGEMENT_3; 720 dcs_mask = WM8904_DCS_ENA_CHAN_2 | WM8904_DCS_ENA_CHAN_3; 721 dcs_r_reg = WM8904_DC_SERVO_6; 722 dcs_l_reg = WM8904_DC_SERVO_7; 723 dcs_l = 2; 724 dcs_r = 3; 725 break; 726 default: 727 WARN(1, "Invalid reg %d\n", reg); 728 return -EINVAL; 729 } 730 731 switch (event) { 732 case SND_SOC_DAPM_PRE_PMU: 733 /* Power on the PGAs */ 734 snd_soc_component_update_bits(component, pwr_reg, 735 WM8904_HPL_PGA_ENA | WM8904_HPR_PGA_ENA, 736 WM8904_HPL_PGA_ENA | WM8904_HPR_PGA_ENA); 737 738 /* Power on the amplifier */ 739 snd_soc_component_update_bits(component, reg, 740 WM8904_HPL_ENA | WM8904_HPR_ENA, 741 WM8904_HPL_ENA | WM8904_HPR_ENA); 742 743 744 /* Enable the first stage */ 745 snd_soc_component_update_bits(component, reg, 746 WM8904_HPL_ENA_DLY | WM8904_HPR_ENA_DLY, 747 WM8904_HPL_ENA_DLY | WM8904_HPR_ENA_DLY); 748 749 /* Power up the DC servo */ 750 snd_soc_component_update_bits(component, WM8904_DC_SERVO_0, 751 dcs_mask, dcs_mask); 752 753 /* Either calibrate the DC servo or restore cached state 754 * if we have that. 755 */ 756 if (wm8904->dcs_state[dcs_l] || wm8904->dcs_state[dcs_r]) { 757 dev_dbg(component->dev, "Restoring DC servo state\n"); 758 759 snd_soc_component_write(component, dcs_l_reg, 760 wm8904->dcs_state[dcs_l]); 761 snd_soc_component_write(component, dcs_r_reg, 762 wm8904->dcs_state[dcs_r]); 763 764 snd_soc_component_write(component, WM8904_DC_SERVO_1, dcs_mask); 765 766 timeout = 20; 767 } else { 768 dev_dbg(component->dev, "Calibrating DC servo\n"); 769 770 snd_soc_component_write(component, WM8904_DC_SERVO_1, 771 dcs_mask << WM8904_DCS_TRIG_STARTUP_0_SHIFT); 772 773 timeout = 500; 774 } 775 776 /* Wait for DC servo to complete */ 777 dcs_mask <<= WM8904_DCS_CAL_COMPLETE_SHIFT; 778 do { 779 val = snd_soc_component_read(component, WM8904_DC_SERVO_READBACK_0); 780 if ((val & dcs_mask) == dcs_mask) 781 break; 782 783 msleep(1); 784 } while (--timeout); 785 786 if ((val & dcs_mask) != dcs_mask) 787 dev_warn(component->dev, "DC servo timed out\n"); 788 else 789 dev_dbg(component->dev, "DC servo ready\n"); 790 791 /* Enable the output stage */ 792 snd_soc_component_update_bits(component, reg, 793 WM8904_HPL_ENA_OUTP | WM8904_HPR_ENA_OUTP, 794 WM8904_HPL_ENA_OUTP | WM8904_HPR_ENA_OUTP); 795 break; 796 797 case SND_SOC_DAPM_POST_PMU: 798 /* Unshort the output itself */ 799 snd_soc_component_update_bits(component, reg, 800 WM8904_HPL_RMV_SHORT | 801 WM8904_HPR_RMV_SHORT, 802 WM8904_HPL_RMV_SHORT | 803 WM8904_HPR_RMV_SHORT); 804 805 break; 806 807 case SND_SOC_DAPM_PRE_PMD: 808 /* Short the output */ 809 snd_soc_component_update_bits(component, reg, 810 WM8904_HPL_RMV_SHORT | 811 WM8904_HPR_RMV_SHORT, 0); 812 break; 813 814 case SND_SOC_DAPM_POST_PMD: 815 /* Cache the DC servo configuration; this will be 816 * invalidated if we change the configuration. */ 817 wm8904->dcs_state[dcs_l] = snd_soc_component_read(component, dcs_l_reg); 818 wm8904->dcs_state[dcs_r] = snd_soc_component_read(component, dcs_r_reg); 819 820 snd_soc_component_update_bits(component, WM8904_DC_SERVO_0, 821 dcs_mask, 0); 822 823 /* Disable the amplifier input and output stages */ 824 snd_soc_component_update_bits(component, reg, 825 WM8904_HPL_ENA | WM8904_HPR_ENA | 826 WM8904_HPL_ENA_DLY | WM8904_HPR_ENA_DLY | 827 WM8904_HPL_ENA_OUTP | WM8904_HPR_ENA_OUTP, 828 0); 829 830 /* PGAs too */ 831 snd_soc_component_update_bits(component, pwr_reg, 832 WM8904_HPL_PGA_ENA | WM8904_HPR_PGA_ENA, 833 0); 834 break; 835 } 836 837 return 0; 838 } 839 840 static const char *input_mode_text[] = { 841 "Single-Ended", "Differential Line", "Differential Mic" 842 }; 843 844 static const char *lin_text[] = { 845 "IN1L", "IN2L", "IN3L" 846 }; 847 848 static SOC_ENUM_SINGLE_DECL(lin_enum, WM8904_ANALOGUE_LEFT_INPUT_1, 2, 849 lin_text); 850 851 static const struct snd_kcontrol_new lin_mux = 852 SOC_DAPM_ENUM("Left Capture Mux", lin_enum); 853 854 static SOC_ENUM_SINGLE_DECL(lin_inv_enum, WM8904_ANALOGUE_LEFT_INPUT_1, 4, 855 lin_text); 856 857 static const struct snd_kcontrol_new lin_inv_mux = 858 SOC_DAPM_ENUM("Left Capture Inverting Mux", lin_inv_enum); 859 860 static SOC_ENUM_SINGLE_DECL(lin_mode_enum, 861 WM8904_ANALOGUE_LEFT_INPUT_1, 0, 862 input_mode_text); 863 864 static const struct snd_kcontrol_new lin_mode = 865 SOC_DAPM_ENUM("Left Capture Mode", lin_mode_enum); 866 867 static const char *rin_text[] = { 868 "IN1R", "IN2R", "IN3R" 869 }; 870 871 static SOC_ENUM_SINGLE_DECL(rin_enum, WM8904_ANALOGUE_RIGHT_INPUT_1, 2, 872 rin_text); 873 874 static const struct snd_kcontrol_new rin_mux = 875 SOC_DAPM_ENUM("Right Capture Mux", rin_enum); 876 877 static SOC_ENUM_SINGLE_DECL(rin_inv_enum, WM8904_ANALOGUE_RIGHT_INPUT_1, 4, 878 rin_text); 879 880 static const struct snd_kcontrol_new rin_inv_mux = 881 SOC_DAPM_ENUM("Right Capture Inverting Mux", rin_inv_enum); 882 883 static SOC_ENUM_SINGLE_DECL(rin_mode_enum, 884 WM8904_ANALOGUE_RIGHT_INPUT_1, 0, 885 input_mode_text); 886 887 static const struct snd_kcontrol_new rin_mode = 888 SOC_DAPM_ENUM("Right Capture Mode", rin_mode_enum); 889 890 static const char *aif_text[] = { 891 "Left", "Right" 892 }; 893 894 static SOC_ENUM_SINGLE_DECL(aifoutl_enum, WM8904_AUDIO_INTERFACE_0, 7, 895 aif_text); 896 897 static const struct snd_kcontrol_new aifoutl_mux = 898 SOC_DAPM_ENUM("AIFOUTL Mux", aifoutl_enum); 899 900 static SOC_ENUM_SINGLE_DECL(aifoutr_enum, WM8904_AUDIO_INTERFACE_0, 6, 901 aif_text); 902 903 static const struct snd_kcontrol_new aifoutr_mux = 904 SOC_DAPM_ENUM("AIFOUTR Mux", aifoutr_enum); 905 906 static SOC_ENUM_SINGLE_DECL(aifinl_enum, WM8904_AUDIO_INTERFACE_0, 5, 907 aif_text); 908 909 static const struct snd_kcontrol_new aifinl_mux = 910 SOC_DAPM_ENUM("AIFINL Mux", aifinl_enum); 911 912 static SOC_ENUM_SINGLE_DECL(aifinr_enum, WM8904_AUDIO_INTERFACE_0, 4, 913 aif_text); 914 915 static const struct snd_kcontrol_new aifinr_mux = 916 SOC_DAPM_ENUM("AIFINR Mux", aifinr_enum); 917 918 static const struct snd_soc_dapm_widget wm8904_core_dapm_widgets[] = { 919 SND_SOC_DAPM_SUPPLY("SYSCLK", WM8904_CLOCK_RATES_2, 2, 0, sysclk_event, 920 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 921 SND_SOC_DAPM_SUPPLY("CLK_DSP", WM8904_CLOCK_RATES_2, 1, 0, NULL, 0), 922 SND_SOC_DAPM_SUPPLY("TOCLK", WM8904_CLOCK_RATES_2, 0, 0, NULL, 0), 923 }; 924 925 static const struct snd_soc_dapm_widget wm8904_adc_dapm_widgets[] = { 926 SND_SOC_DAPM_INPUT("IN1L"), 927 SND_SOC_DAPM_INPUT("IN1R"), 928 SND_SOC_DAPM_INPUT("IN2L"), 929 SND_SOC_DAPM_INPUT("IN2R"), 930 SND_SOC_DAPM_INPUT("IN3L"), 931 SND_SOC_DAPM_INPUT("IN3R"), 932 933 SND_SOC_DAPM_SUPPLY("MICBIAS", WM8904_MIC_BIAS_CONTROL_0, 0, 0, NULL, 0), 934 935 SND_SOC_DAPM_MUX("Left Capture Mux", SND_SOC_NOPM, 0, 0, &lin_mux), 936 SND_SOC_DAPM_MUX("Left Capture Inverting Mux", SND_SOC_NOPM, 0, 0, 937 &lin_inv_mux), 938 SND_SOC_DAPM_MUX("Left Capture Mode", SND_SOC_NOPM, 0, 0, &lin_mode), 939 SND_SOC_DAPM_MUX("Right Capture Mux", SND_SOC_NOPM, 0, 0, &rin_mux), 940 SND_SOC_DAPM_MUX("Right Capture Inverting Mux", SND_SOC_NOPM, 0, 0, 941 &rin_inv_mux), 942 SND_SOC_DAPM_MUX("Right Capture Mode", SND_SOC_NOPM, 0, 0, &rin_mode), 943 944 SND_SOC_DAPM_PGA("Left Capture PGA", WM8904_POWER_MANAGEMENT_0, 1, 0, 945 NULL, 0), 946 SND_SOC_DAPM_PGA("Right Capture PGA", WM8904_POWER_MANAGEMENT_0, 0, 0, 947 NULL, 0), 948 949 SND_SOC_DAPM_ADC("ADCL", NULL, WM8904_POWER_MANAGEMENT_6, 1, 0), 950 SND_SOC_DAPM_ADC("ADCR", NULL, WM8904_POWER_MANAGEMENT_6, 0, 0), 951 952 SND_SOC_DAPM_MUX("AIFOUTL Mux", SND_SOC_NOPM, 0, 0, &aifoutl_mux), 953 SND_SOC_DAPM_MUX("AIFOUTR Mux", SND_SOC_NOPM, 0, 0, &aifoutr_mux), 954 955 SND_SOC_DAPM_AIF_OUT("AIFOUTL", "Capture", 0, SND_SOC_NOPM, 0, 0), 956 SND_SOC_DAPM_AIF_OUT("AIFOUTR", "Capture", 1, SND_SOC_NOPM, 0, 0), 957 }; 958 959 static const struct snd_soc_dapm_widget wm8904_dac_dapm_widgets[] = { 960 SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0), 961 SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0), 962 963 SND_SOC_DAPM_MUX("DACL Mux", SND_SOC_NOPM, 0, 0, &aifinl_mux), 964 SND_SOC_DAPM_MUX("DACR Mux", SND_SOC_NOPM, 0, 0, &aifinr_mux), 965 966 SND_SOC_DAPM_DAC("DACL", NULL, WM8904_POWER_MANAGEMENT_6, 3, 0), 967 SND_SOC_DAPM_DAC("DACR", NULL, WM8904_POWER_MANAGEMENT_6, 2, 0), 968 969 SND_SOC_DAPM_SUPPLY("Charge pump", WM8904_CHARGE_PUMP_0, 0, 0, cp_event, 970 SND_SOC_DAPM_POST_PMU), 971 972 SND_SOC_DAPM_PGA("HPL PGA", SND_SOC_NOPM, 1, 0, NULL, 0), 973 SND_SOC_DAPM_PGA("HPR PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 974 975 SND_SOC_DAPM_PGA("LINEL PGA", SND_SOC_NOPM, 1, 0, NULL, 0), 976 SND_SOC_DAPM_PGA("LINER PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 977 978 SND_SOC_DAPM_PGA_E("Headphone Output", SND_SOC_NOPM, WM8904_ANALOGUE_HP_0, 979 0, NULL, 0, out_pga_event, 980 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | 981 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD), 982 SND_SOC_DAPM_PGA_E("Line Output", SND_SOC_NOPM, WM8904_ANALOGUE_LINEOUT_0, 983 0, NULL, 0, out_pga_event, 984 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | 985 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD), 986 987 SND_SOC_DAPM_OUTPUT("HPOUTL"), 988 SND_SOC_DAPM_OUTPUT("HPOUTR"), 989 SND_SOC_DAPM_OUTPUT("LINEOUTL"), 990 SND_SOC_DAPM_OUTPUT("LINEOUTR"), 991 }; 992 993 static const char *out_mux_text[] = { 994 "DAC", "Bypass" 995 }; 996 997 static SOC_ENUM_SINGLE_DECL(hpl_enum, WM8904_ANALOGUE_OUT12_ZC, 3, 998 out_mux_text); 999 1000 static const struct snd_kcontrol_new hpl_mux = 1001 SOC_DAPM_ENUM("HPL Mux", hpl_enum); 1002 1003 static SOC_ENUM_SINGLE_DECL(hpr_enum, WM8904_ANALOGUE_OUT12_ZC, 2, 1004 out_mux_text); 1005 1006 static const struct snd_kcontrol_new hpr_mux = 1007 SOC_DAPM_ENUM("HPR Mux", hpr_enum); 1008 1009 static SOC_ENUM_SINGLE_DECL(linel_enum, WM8904_ANALOGUE_OUT12_ZC, 1, 1010 out_mux_text); 1011 1012 static const struct snd_kcontrol_new linel_mux = 1013 SOC_DAPM_ENUM("LINEL Mux", linel_enum); 1014 1015 static SOC_ENUM_SINGLE_DECL(liner_enum, WM8904_ANALOGUE_OUT12_ZC, 0, 1016 out_mux_text); 1017 1018 static const struct snd_kcontrol_new liner_mux = 1019 SOC_DAPM_ENUM("LINER Mux", liner_enum); 1020 1021 static const char *sidetone_text[] = { 1022 "None", "Left", "Right" 1023 }; 1024 1025 static SOC_ENUM_SINGLE_DECL(dacl_sidetone_enum, WM8904_DAC_DIGITAL_0, 2, 1026 sidetone_text); 1027 1028 static const struct snd_kcontrol_new dacl_sidetone_mux = 1029 SOC_DAPM_ENUM("Left Sidetone Mux", dacl_sidetone_enum); 1030 1031 static SOC_ENUM_SINGLE_DECL(dacr_sidetone_enum, WM8904_DAC_DIGITAL_0, 0, 1032 sidetone_text); 1033 1034 static const struct snd_kcontrol_new dacr_sidetone_mux = 1035 SOC_DAPM_ENUM("Right Sidetone Mux", dacr_sidetone_enum); 1036 1037 static const struct snd_soc_dapm_widget wm8904_dapm_widgets[] = { 1038 SND_SOC_DAPM_SUPPLY("Class G", WM8904_CLASS_W_0, 0, 1, NULL, 0), 1039 SND_SOC_DAPM_PGA("Left Bypass", SND_SOC_NOPM, 0, 0, NULL, 0), 1040 SND_SOC_DAPM_PGA("Right Bypass", SND_SOC_NOPM, 0, 0, NULL, 0), 1041 1042 SND_SOC_DAPM_MUX("Left Sidetone", SND_SOC_NOPM, 0, 0, &dacl_sidetone_mux), 1043 SND_SOC_DAPM_MUX("Right Sidetone", SND_SOC_NOPM, 0, 0, &dacr_sidetone_mux), 1044 1045 SND_SOC_DAPM_MUX("HPL Mux", SND_SOC_NOPM, 0, 0, &hpl_mux), 1046 SND_SOC_DAPM_MUX("HPR Mux", SND_SOC_NOPM, 0, 0, &hpr_mux), 1047 SND_SOC_DAPM_MUX("LINEL Mux", SND_SOC_NOPM, 0, 0, &linel_mux), 1048 SND_SOC_DAPM_MUX("LINER Mux", SND_SOC_NOPM, 0, 0, &liner_mux), 1049 }; 1050 1051 static const struct snd_soc_dapm_route core_intercon[] = { 1052 { "CLK_DSP", NULL, "SYSCLK" }, 1053 { "TOCLK", NULL, "SYSCLK" }, 1054 }; 1055 1056 static const struct snd_soc_dapm_route adc_intercon[] = { 1057 { "Left Capture Mux", "IN1L", "IN1L" }, 1058 { "Left Capture Mux", "IN2L", "IN2L" }, 1059 { "Left Capture Mux", "IN3L", "IN3L" }, 1060 1061 { "Left Capture Inverting Mux", "IN1L", "IN1L" }, 1062 { "Left Capture Inverting Mux", "IN2L", "IN2L" }, 1063 { "Left Capture Inverting Mux", "IN3L", "IN3L" }, 1064 1065 { "Left Capture Mode", "Single-Ended", "Left Capture Inverting Mux" }, 1066 { "Left Capture Mode", "Differential Line", "Left Capture Mux" }, 1067 { "Left Capture Mode", "Differential Line", "Left Capture Inverting Mux" }, 1068 { "Left Capture Mode", "Differential Mic", "Left Capture Mux" }, 1069 { "Left Capture Mode", "Differential Mic", "Left Capture Inverting Mux" }, 1070 1071 { "Right Capture Mux", "IN1R", "IN1R" }, 1072 { "Right Capture Mux", "IN2R", "IN2R" }, 1073 { "Right Capture Mux", "IN3R", "IN3R" }, 1074 1075 { "Right Capture Inverting Mux", "IN1R", "IN1R" }, 1076 { "Right Capture Inverting Mux", "IN2R", "IN2R" }, 1077 { "Right Capture Inverting Mux", "IN3R", "IN3R" }, 1078 1079 { "Right Capture Mode", "Single-Ended", "Right Capture Inverting Mux" }, 1080 { "Right Capture Mode", "Differential Line", "Right Capture Mux" }, 1081 { "Right Capture Mode", "Differential Line", "Right Capture Inverting Mux" }, 1082 { "Right Capture Mode", "Differential Mic", "Right Capture Mux" }, 1083 { "Right Capture Mode", "Differential Mic", "Right Capture Inverting Mux" }, 1084 1085 { "Left Capture PGA", NULL, "Left Capture Mode" }, 1086 { "Right Capture PGA", NULL, "Right Capture Mode" }, 1087 1088 { "AIFOUTL Mux", "Left", "ADCL" }, 1089 { "AIFOUTL Mux", "Right", "ADCR" }, 1090 { "AIFOUTR Mux", "Left", "ADCL" }, 1091 { "AIFOUTR Mux", "Right", "ADCR" }, 1092 1093 { "AIFOUTL", NULL, "AIFOUTL Mux" }, 1094 { "AIFOUTR", NULL, "AIFOUTR Mux" }, 1095 1096 { "ADCL", NULL, "CLK_DSP" }, 1097 { "ADCL", NULL, "Left Capture PGA" }, 1098 1099 { "ADCR", NULL, "CLK_DSP" }, 1100 { "ADCR", NULL, "Right Capture PGA" }, 1101 }; 1102 1103 static const struct snd_soc_dapm_route dac_intercon[] = { 1104 { "DACL Mux", "Left", "AIFINL" }, 1105 { "DACL Mux", "Right", "AIFINR" }, 1106 1107 { "DACR Mux", "Left", "AIFINL" }, 1108 { "DACR Mux", "Right", "AIFINR" }, 1109 1110 { "DACL", NULL, "DACL Mux" }, 1111 { "DACL", NULL, "CLK_DSP" }, 1112 1113 { "DACR", NULL, "DACR Mux" }, 1114 { "DACR", NULL, "CLK_DSP" }, 1115 1116 { "Charge pump", NULL, "SYSCLK" }, 1117 1118 { "Headphone Output", NULL, "HPL PGA" }, 1119 { "Headphone Output", NULL, "HPR PGA" }, 1120 { "Headphone Output", NULL, "Charge pump" }, 1121 { "Headphone Output", NULL, "TOCLK" }, 1122 1123 { "Line Output", NULL, "LINEL PGA" }, 1124 { "Line Output", NULL, "LINER PGA" }, 1125 { "Line Output", NULL, "Charge pump" }, 1126 { "Line Output", NULL, "TOCLK" }, 1127 1128 { "HPOUTL", NULL, "Headphone Output" }, 1129 { "HPOUTR", NULL, "Headphone Output" }, 1130 1131 { "LINEOUTL", NULL, "Line Output" }, 1132 { "LINEOUTR", NULL, "Line Output" }, 1133 }; 1134 1135 static const struct snd_soc_dapm_route wm8904_intercon[] = { 1136 { "Left Sidetone", "Left", "ADCL" }, 1137 { "Left Sidetone", "Right", "ADCR" }, 1138 { "DACL", NULL, "Left Sidetone" }, 1139 1140 { "Right Sidetone", "Left", "ADCL" }, 1141 { "Right Sidetone", "Right", "ADCR" }, 1142 { "DACR", NULL, "Right Sidetone" }, 1143 1144 { "Left Bypass", NULL, "Class G" }, 1145 { "Left Bypass", NULL, "Left Capture PGA" }, 1146 1147 { "Right Bypass", NULL, "Class G" }, 1148 { "Right Bypass", NULL, "Right Capture PGA" }, 1149 1150 { "HPL Mux", "DAC", "DACL" }, 1151 { "HPL Mux", "Bypass", "Left Bypass" }, 1152 1153 { "HPR Mux", "DAC", "DACR" }, 1154 { "HPR Mux", "Bypass", "Right Bypass" }, 1155 1156 { "LINEL Mux", "DAC", "DACL" }, 1157 { "LINEL Mux", "Bypass", "Left Bypass" }, 1158 1159 { "LINER Mux", "DAC", "DACR" }, 1160 { "LINER Mux", "Bypass", "Right Bypass" }, 1161 1162 { "HPL PGA", NULL, "HPL Mux" }, 1163 { "HPR PGA", NULL, "HPR Mux" }, 1164 1165 { "LINEL PGA", NULL, "LINEL Mux" }, 1166 { "LINER PGA", NULL, "LINER Mux" }, 1167 }; 1168 1169 static const struct snd_soc_dapm_route wm8912_intercon[] = { 1170 { "HPL PGA", NULL, "DACL" }, 1171 { "HPR PGA", NULL, "DACR" }, 1172 1173 { "LINEL PGA", NULL, "DACL" }, 1174 { "LINER PGA", NULL, "DACR" }, 1175 }; 1176 1177 static int wm8904_add_widgets(struct snd_soc_component *component) 1178 { 1179 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 1180 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); 1181 1182 snd_soc_dapm_new_controls(dapm, wm8904_core_dapm_widgets, 1183 ARRAY_SIZE(wm8904_core_dapm_widgets)); 1184 snd_soc_dapm_add_routes(dapm, core_intercon, 1185 ARRAY_SIZE(core_intercon)); 1186 1187 switch (wm8904->devtype) { 1188 case WM8904: 1189 snd_soc_add_component_controls(component, wm8904_adc_snd_controls, 1190 ARRAY_SIZE(wm8904_adc_snd_controls)); 1191 snd_soc_add_component_controls(component, wm8904_dac_snd_controls, 1192 ARRAY_SIZE(wm8904_dac_snd_controls)); 1193 snd_soc_add_component_controls(component, wm8904_snd_controls, 1194 ARRAY_SIZE(wm8904_snd_controls)); 1195 1196 snd_soc_dapm_new_controls(dapm, wm8904_adc_dapm_widgets, 1197 ARRAY_SIZE(wm8904_adc_dapm_widgets)); 1198 snd_soc_dapm_new_controls(dapm, wm8904_dac_dapm_widgets, 1199 ARRAY_SIZE(wm8904_dac_dapm_widgets)); 1200 snd_soc_dapm_new_controls(dapm, wm8904_dapm_widgets, 1201 ARRAY_SIZE(wm8904_dapm_widgets)); 1202 1203 snd_soc_dapm_add_routes(dapm, adc_intercon, 1204 ARRAY_SIZE(adc_intercon)); 1205 snd_soc_dapm_add_routes(dapm, dac_intercon, 1206 ARRAY_SIZE(dac_intercon)); 1207 snd_soc_dapm_add_routes(dapm, wm8904_intercon, 1208 ARRAY_SIZE(wm8904_intercon)); 1209 break; 1210 1211 case WM8912: 1212 snd_soc_add_component_controls(component, wm8904_dac_snd_controls, 1213 ARRAY_SIZE(wm8904_dac_snd_controls)); 1214 1215 snd_soc_dapm_new_controls(dapm, wm8904_dac_dapm_widgets, 1216 ARRAY_SIZE(wm8904_dac_dapm_widgets)); 1217 1218 snd_soc_dapm_add_routes(dapm, dac_intercon, 1219 ARRAY_SIZE(dac_intercon)); 1220 snd_soc_dapm_add_routes(dapm, wm8912_intercon, 1221 ARRAY_SIZE(wm8912_intercon)); 1222 break; 1223 } 1224 1225 return 0; 1226 } 1227 1228 static struct { 1229 int ratio; 1230 unsigned int clk_sys_rate; 1231 } clk_sys_rates[] = { 1232 { 64, 0 }, 1233 { 128, 1 }, 1234 { 192, 2 }, 1235 { 256, 3 }, 1236 { 384, 4 }, 1237 { 512, 5 }, 1238 { 786, 6 }, 1239 { 1024, 7 }, 1240 { 1408, 8 }, 1241 { 1536, 9 }, 1242 }; 1243 1244 static struct { 1245 int rate; 1246 int sample_rate; 1247 } sample_rates[] = { 1248 { 8000, 0 }, 1249 { 11025, 1 }, 1250 { 12000, 1 }, 1251 { 16000, 2 }, 1252 { 22050, 3 }, 1253 { 24000, 3 }, 1254 { 32000, 4 }, 1255 { 44100, 5 }, 1256 { 48000, 5 }, 1257 }; 1258 1259 static struct { 1260 int div; /* *10 due to .5s */ 1261 int bclk_div; 1262 } bclk_divs[] = { 1263 { 10, 0 }, 1264 { 15, 1 }, 1265 { 20, 2 }, 1266 { 30, 3 }, 1267 { 40, 4 }, 1268 { 50, 5 }, 1269 { 55, 6 }, 1270 { 60, 7 }, 1271 { 80, 8 }, 1272 { 100, 9 }, 1273 { 110, 10 }, 1274 { 120, 11 }, 1275 { 160, 12 }, 1276 { 200, 13 }, 1277 { 220, 14 }, 1278 { 240, 16 }, 1279 { 200, 17 }, 1280 { 320, 18 }, 1281 { 440, 19 }, 1282 { 480, 20 }, 1283 }; 1284 1285 1286 static int wm8904_hw_params(struct snd_pcm_substream *substream, 1287 struct snd_pcm_hw_params *params, 1288 struct snd_soc_dai *dai) 1289 { 1290 struct snd_soc_component *component = dai->component; 1291 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 1292 int ret, i, best, best_val, cur_val; 1293 unsigned int aif1 = 0; 1294 unsigned int aif2 = 0; 1295 unsigned int aif3 = 0; 1296 unsigned int clock1 = 0; 1297 unsigned int dac_digital1 = 0; 1298 1299 /* What BCLK do we need? */ 1300 wm8904->fs = params_rate(params); 1301 if (wm8904->tdm_slots) { 1302 dev_dbg(component->dev, "Configuring for %d %d bit TDM slots\n", 1303 wm8904->tdm_slots, wm8904->tdm_width); 1304 wm8904->bclk = snd_soc_calc_bclk(wm8904->fs, 1305 wm8904->tdm_width, 2, 1306 wm8904->tdm_slots); 1307 } else { 1308 wm8904->bclk = snd_soc_params_to_bclk(params); 1309 } 1310 1311 switch (params_width(params)) { 1312 case 16: 1313 break; 1314 case 20: 1315 aif1 |= 0x40; 1316 break; 1317 case 24: 1318 aif1 |= 0x80; 1319 break; 1320 case 32: 1321 aif1 |= 0xc0; 1322 break; 1323 default: 1324 return -EINVAL; 1325 } 1326 1327 1328 dev_dbg(component->dev, "Target BCLK is %dHz\n", wm8904->bclk); 1329 1330 ret = wm8904_configure_clocking(component); 1331 if (ret != 0) 1332 return ret; 1333 1334 /* Select nearest CLK_SYS_RATE */ 1335 best = 0; 1336 best_val = abs((wm8904->sysclk_rate / clk_sys_rates[0].ratio) 1337 - wm8904->fs); 1338 for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) { 1339 cur_val = abs((wm8904->sysclk_rate / 1340 clk_sys_rates[i].ratio) - wm8904->fs); 1341 if (cur_val < best_val) { 1342 best = i; 1343 best_val = cur_val; 1344 } 1345 } 1346 dev_dbg(component->dev, "Selected CLK_SYS_RATIO of %d\n", 1347 clk_sys_rates[best].ratio); 1348 clock1 |= (clk_sys_rates[best].clk_sys_rate 1349 << WM8904_CLK_SYS_RATE_SHIFT); 1350 1351 /* SAMPLE_RATE */ 1352 best = 0; 1353 best_val = abs(wm8904->fs - sample_rates[0].rate); 1354 for (i = 1; i < ARRAY_SIZE(sample_rates); i++) { 1355 /* Closest match */ 1356 cur_val = abs(wm8904->fs - sample_rates[i].rate); 1357 if (cur_val < best_val) { 1358 best = i; 1359 best_val = cur_val; 1360 } 1361 } 1362 dev_dbg(component->dev, "Selected SAMPLE_RATE of %dHz\n", 1363 sample_rates[best].rate); 1364 clock1 |= (sample_rates[best].sample_rate 1365 << WM8904_SAMPLE_RATE_SHIFT); 1366 1367 /* Enable sloping stopband filter for low sample rates */ 1368 if (wm8904->fs <= 24000) 1369 dac_digital1 |= WM8904_DAC_SB_FILT; 1370 1371 /* BCLK_DIV */ 1372 best = 0; 1373 best_val = INT_MAX; 1374 for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) { 1375 cur_val = ((wm8904->sysclk_rate * 10) / bclk_divs[i].div) 1376 - wm8904->bclk; 1377 if (cur_val < 0) /* Table is sorted */ 1378 break; 1379 if (cur_val < best_val) { 1380 best = i; 1381 best_val = cur_val; 1382 } 1383 } 1384 wm8904->bclk = (wm8904->sysclk_rate * 10) / bclk_divs[best].div; 1385 dev_dbg(component->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n", 1386 bclk_divs[best].div, wm8904->bclk); 1387 aif2 |= bclk_divs[best].bclk_div; 1388 1389 /* LRCLK is a simple fraction of BCLK */ 1390 dev_dbg(component->dev, "LRCLK_RATE is %d\n", wm8904->bclk / wm8904->fs); 1391 aif3 |= wm8904->bclk / wm8904->fs; 1392 1393 /* Apply the settings */ 1394 snd_soc_component_update_bits(component, WM8904_DAC_DIGITAL_1, 1395 WM8904_DAC_SB_FILT, dac_digital1); 1396 snd_soc_component_update_bits(component, WM8904_AUDIO_INTERFACE_1, 1397 WM8904_AIF_WL_MASK, aif1); 1398 snd_soc_component_update_bits(component, WM8904_AUDIO_INTERFACE_2, 1399 WM8904_BCLK_DIV_MASK, aif2); 1400 snd_soc_component_update_bits(component, WM8904_AUDIO_INTERFACE_3, 1401 WM8904_LRCLK_RATE_MASK, aif3); 1402 snd_soc_component_update_bits(component, WM8904_CLOCK_RATES_1, 1403 WM8904_SAMPLE_RATE_MASK | 1404 WM8904_CLK_SYS_RATE_MASK, clock1); 1405 1406 /* Update filters for the new settings */ 1407 wm8904_set_retune_mobile(component); 1408 wm8904_set_deemph(component); 1409 1410 return 0; 1411 } 1412 1413 static int wm8904_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 1414 { 1415 struct snd_soc_component *component = dai->component; 1416 unsigned int aif1 = 0; 1417 unsigned int aif3 = 0; 1418 1419 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 1420 case SND_SOC_DAIFMT_CBS_CFS: 1421 break; 1422 case SND_SOC_DAIFMT_CBS_CFM: 1423 aif3 |= WM8904_LRCLK_DIR; 1424 break; 1425 case SND_SOC_DAIFMT_CBM_CFS: 1426 aif1 |= WM8904_BCLK_DIR; 1427 break; 1428 case SND_SOC_DAIFMT_CBM_CFM: 1429 aif1 |= WM8904_BCLK_DIR; 1430 aif3 |= WM8904_LRCLK_DIR; 1431 break; 1432 default: 1433 return -EINVAL; 1434 } 1435 1436 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 1437 case SND_SOC_DAIFMT_DSP_B: 1438 aif1 |= 0x3 | WM8904_AIF_LRCLK_INV; 1439 fallthrough; 1440 case SND_SOC_DAIFMT_DSP_A: 1441 aif1 |= 0x3; 1442 break; 1443 case SND_SOC_DAIFMT_I2S: 1444 aif1 |= 0x2; 1445 break; 1446 case SND_SOC_DAIFMT_RIGHT_J: 1447 break; 1448 case SND_SOC_DAIFMT_LEFT_J: 1449 aif1 |= 0x1; 1450 break; 1451 default: 1452 return -EINVAL; 1453 } 1454 1455 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 1456 case SND_SOC_DAIFMT_DSP_A: 1457 case SND_SOC_DAIFMT_DSP_B: 1458 /* frame inversion not valid for DSP modes */ 1459 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 1460 case SND_SOC_DAIFMT_NB_NF: 1461 break; 1462 case SND_SOC_DAIFMT_IB_NF: 1463 aif1 |= WM8904_AIF_BCLK_INV; 1464 break; 1465 default: 1466 return -EINVAL; 1467 } 1468 break; 1469 1470 case SND_SOC_DAIFMT_I2S: 1471 case SND_SOC_DAIFMT_RIGHT_J: 1472 case SND_SOC_DAIFMT_LEFT_J: 1473 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 1474 case SND_SOC_DAIFMT_NB_NF: 1475 break; 1476 case SND_SOC_DAIFMT_IB_IF: 1477 aif1 |= WM8904_AIF_BCLK_INV | WM8904_AIF_LRCLK_INV; 1478 break; 1479 case SND_SOC_DAIFMT_IB_NF: 1480 aif1 |= WM8904_AIF_BCLK_INV; 1481 break; 1482 case SND_SOC_DAIFMT_NB_IF: 1483 aif1 |= WM8904_AIF_LRCLK_INV; 1484 break; 1485 default: 1486 return -EINVAL; 1487 } 1488 break; 1489 default: 1490 return -EINVAL; 1491 } 1492 1493 snd_soc_component_update_bits(component, WM8904_AUDIO_INTERFACE_1, 1494 WM8904_AIF_BCLK_INV | WM8904_AIF_LRCLK_INV | 1495 WM8904_AIF_FMT_MASK | WM8904_BCLK_DIR, aif1); 1496 snd_soc_component_update_bits(component, WM8904_AUDIO_INTERFACE_3, 1497 WM8904_LRCLK_DIR, aif3); 1498 1499 return 0; 1500 } 1501 1502 1503 static int wm8904_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, 1504 unsigned int rx_mask, int slots, int slot_width) 1505 { 1506 struct snd_soc_component *component = dai->component; 1507 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 1508 int aif1 = 0; 1509 1510 /* Don't need to validate anything if we're turning off TDM */ 1511 if (slots == 0) 1512 goto out; 1513 1514 /* Note that we allow configurations we can't handle ourselves - 1515 * for example, we can generate clocks for slots 2 and up even if 1516 * we can't use those slots ourselves. 1517 */ 1518 aif1 |= WM8904_AIFADC_TDM | WM8904_AIFDAC_TDM; 1519 1520 switch (rx_mask) { 1521 case 3: 1522 break; 1523 case 0xc: 1524 aif1 |= WM8904_AIFADC_TDM_CHAN; 1525 break; 1526 default: 1527 return -EINVAL; 1528 } 1529 1530 1531 switch (tx_mask) { 1532 case 3: 1533 break; 1534 case 0xc: 1535 aif1 |= WM8904_AIFDAC_TDM_CHAN; 1536 break; 1537 default: 1538 return -EINVAL; 1539 } 1540 1541 out: 1542 wm8904->tdm_width = slot_width; 1543 wm8904->tdm_slots = slots / 2; 1544 1545 snd_soc_component_update_bits(component, WM8904_AUDIO_INTERFACE_1, 1546 WM8904_AIFADC_TDM | WM8904_AIFADC_TDM_CHAN | 1547 WM8904_AIFDAC_TDM | WM8904_AIFDAC_TDM_CHAN, aif1); 1548 1549 return 0; 1550 } 1551 1552 struct _fll_div { 1553 u16 fll_fratio; 1554 u16 fll_outdiv; 1555 u16 fll_clk_ref_div; 1556 u16 n; 1557 u16 k; 1558 }; 1559 1560 /* The size in bits of the FLL divide multiplied by 10 1561 * to allow rounding later */ 1562 #define FIXED_FLL_SIZE ((1 << 16) * 10) 1563 1564 static struct { 1565 unsigned int min; 1566 unsigned int max; 1567 u16 fll_fratio; 1568 int ratio; 1569 } fll_fratios[] = { 1570 { 0, 64000, 4, 16 }, 1571 { 64000, 128000, 3, 8 }, 1572 { 128000, 256000, 2, 4 }, 1573 { 256000, 1000000, 1, 2 }, 1574 { 1000000, 13500000, 0, 1 }, 1575 }; 1576 1577 static int fll_factors(struct _fll_div *fll_div, unsigned int Fref, 1578 unsigned int Fout) 1579 { 1580 u64 Kpart; 1581 unsigned int K, Ndiv, Nmod, target; 1582 unsigned int div; 1583 int i; 1584 1585 /* Fref must be <=13.5MHz */ 1586 div = 1; 1587 fll_div->fll_clk_ref_div = 0; 1588 while ((Fref / div) > 13500000) { 1589 div *= 2; 1590 fll_div->fll_clk_ref_div++; 1591 1592 if (div > 8) { 1593 pr_err("Can't scale %dMHz input down to <=13.5MHz\n", 1594 Fref); 1595 return -EINVAL; 1596 } 1597 } 1598 1599 pr_debug("Fref=%u Fout=%u\n", Fref, Fout); 1600 1601 /* Apply the division for our remaining calculations */ 1602 Fref /= div; 1603 1604 /* Fvco should be 90-100MHz; don't check the upper bound */ 1605 div = 4; 1606 while (Fout * div < 90000000) { 1607 div++; 1608 if (div > 64) { 1609 pr_err("Unable to find FLL_OUTDIV for Fout=%uHz\n", 1610 Fout); 1611 return -EINVAL; 1612 } 1613 } 1614 target = Fout * div; 1615 fll_div->fll_outdiv = div - 1; 1616 1617 pr_debug("Fvco=%dHz\n", target); 1618 1619 /* Find an appropriate FLL_FRATIO and factor it out of the target */ 1620 for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) { 1621 if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) { 1622 fll_div->fll_fratio = fll_fratios[i].fll_fratio; 1623 target /= fll_fratios[i].ratio; 1624 break; 1625 } 1626 } 1627 if (i == ARRAY_SIZE(fll_fratios)) { 1628 pr_err("Unable to find FLL_FRATIO for Fref=%uHz\n", Fref); 1629 return -EINVAL; 1630 } 1631 1632 /* Now, calculate N.K */ 1633 Ndiv = target / Fref; 1634 1635 fll_div->n = Ndiv; 1636 Nmod = target % Fref; 1637 pr_debug("Nmod=%d\n", Nmod); 1638 1639 /* Calculate fractional part - scale up so we can round. */ 1640 Kpart = FIXED_FLL_SIZE * (long long)Nmod; 1641 1642 do_div(Kpart, Fref); 1643 1644 K = Kpart & 0xFFFFFFFF; 1645 1646 if ((K % 10) >= 5) 1647 K += 5; 1648 1649 /* Move down to proper range now rounding is done */ 1650 fll_div->k = K / 10; 1651 1652 pr_debug("N=%x K=%x FLL_FRATIO=%x FLL_OUTDIV=%x FLL_CLK_REF_DIV=%x\n", 1653 fll_div->n, fll_div->k, 1654 fll_div->fll_fratio, fll_div->fll_outdiv, 1655 fll_div->fll_clk_ref_div); 1656 1657 return 0; 1658 } 1659 1660 static int wm8904_set_fll(struct snd_soc_dai *dai, int fll_id, int source, 1661 unsigned int Fref, unsigned int Fout) 1662 { 1663 struct snd_soc_component *component = dai->component; 1664 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 1665 struct _fll_div fll_div; 1666 int ret, val; 1667 int clock2, fll1; 1668 1669 /* Any change? */ 1670 if (source == wm8904->fll_src && Fref == wm8904->fll_fref && 1671 Fout == wm8904->fll_fout) 1672 return 0; 1673 1674 clock2 = snd_soc_component_read(component, WM8904_CLOCK_RATES_2); 1675 1676 if (Fout == 0) { 1677 dev_dbg(component->dev, "FLL disabled\n"); 1678 1679 wm8904->fll_fref = 0; 1680 wm8904->fll_fout = 0; 1681 1682 /* Gate SYSCLK to avoid glitches */ 1683 snd_soc_component_update_bits(component, WM8904_CLOCK_RATES_2, 1684 WM8904_CLK_SYS_ENA, 0); 1685 1686 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_1, 1687 WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0); 1688 1689 goto out; 1690 } 1691 1692 /* Validate the FLL ID */ 1693 switch (source) { 1694 case WM8904_FLL_MCLK: 1695 case WM8904_FLL_LRCLK: 1696 case WM8904_FLL_BCLK: 1697 ret = fll_factors(&fll_div, Fref, Fout); 1698 if (ret != 0) 1699 return ret; 1700 break; 1701 1702 case WM8904_FLL_FREE_RUNNING: 1703 dev_dbg(component->dev, "Using free running FLL\n"); 1704 /* Force 12MHz and output/4 for now */ 1705 Fout = 12000000; 1706 Fref = 12000000; 1707 1708 memset(&fll_div, 0, sizeof(fll_div)); 1709 fll_div.fll_outdiv = 3; 1710 break; 1711 1712 default: 1713 dev_err(component->dev, "Unknown FLL ID %d\n", fll_id); 1714 return -EINVAL; 1715 } 1716 1717 /* Save current state then disable the FLL and SYSCLK to avoid 1718 * misclocking */ 1719 fll1 = snd_soc_component_read(component, WM8904_FLL_CONTROL_1); 1720 snd_soc_component_update_bits(component, WM8904_CLOCK_RATES_2, 1721 WM8904_CLK_SYS_ENA, 0); 1722 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_1, 1723 WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0); 1724 1725 /* Unlock forced oscilator control to switch it on/off */ 1726 snd_soc_component_update_bits(component, WM8904_CONTROL_INTERFACE_TEST_1, 1727 WM8904_USER_KEY, WM8904_USER_KEY); 1728 1729 if (fll_id == WM8904_FLL_FREE_RUNNING) { 1730 val = WM8904_FLL_FRC_NCO; 1731 } else { 1732 val = 0; 1733 } 1734 1735 snd_soc_component_update_bits(component, WM8904_FLL_NCO_TEST_1, WM8904_FLL_FRC_NCO, 1736 val); 1737 snd_soc_component_update_bits(component, WM8904_CONTROL_INTERFACE_TEST_1, 1738 WM8904_USER_KEY, 0); 1739 1740 switch (fll_id) { 1741 case WM8904_FLL_MCLK: 1742 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_5, 1743 WM8904_FLL_CLK_REF_SRC_MASK, 0); 1744 break; 1745 1746 case WM8904_FLL_LRCLK: 1747 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_5, 1748 WM8904_FLL_CLK_REF_SRC_MASK, 1); 1749 break; 1750 1751 case WM8904_FLL_BCLK: 1752 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_5, 1753 WM8904_FLL_CLK_REF_SRC_MASK, 2); 1754 break; 1755 } 1756 1757 if (fll_div.k) 1758 val = WM8904_FLL_FRACN_ENA; 1759 else 1760 val = 0; 1761 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_1, 1762 WM8904_FLL_FRACN_ENA, val); 1763 1764 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_2, 1765 WM8904_FLL_OUTDIV_MASK | WM8904_FLL_FRATIO_MASK, 1766 (fll_div.fll_outdiv << WM8904_FLL_OUTDIV_SHIFT) | 1767 (fll_div.fll_fratio << WM8904_FLL_FRATIO_SHIFT)); 1768 1769 snd_soc_component_write(component, WM8904_FLL_CONTROL_3, fll_div.k); 1770 1771 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_4, WM8904_FLL_N_MASK, 1772 fll_div.n << WM8904_FLL_N_SHIFT); 1773 1774 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_5, 1775 WM8904_FLL_CLK_REF_DIV_MASK, 1776 fll_div.fll_clk_ref_div 1777 << WM8904_FLL_CLK_REF_DIV_SHIFT); 1778 1779 dev_dbg(component->dev, "FLL configured for %dHz->%dHz\n", Fref, Fout); 1780 1781 wm8904->fll_fref = Fref; 1782 wm8904->fll_fout = Fout; 1783 wm8904->fll_src = source; 1784 1785 /* Enable the FLL if it was previously active */ 1786 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_1, 1787 WM8904_FLL_OSC_ENA, fll1); 1788 snd_soc_component_update_bits(component, WM8904_FLL_CONTROL_1, 1789 WM8904_FLL_ENA, fll1); 1790 1791 out: 1792 /* Reenable SYSCLK if it was previously active */ 1793 snd_soc_component_update_bits(component, WM8904_CLOCK_RATES_2, 1794 WM8904_CLK_SYS_ENA, clock2); 1795 1796 return 0; 1797 } 1798 1799 static int wm8904_set_sysclk(struct snd_soc_dai *dai, int clk_id, 1800 unsigned int freq, int dir) 1801 { 1802 struct snd_soc_component *component = dai->component; 1803 struct wm8904_priv *priv = snd_soc_component_get_drvdata(component); 1804 unsigned long mclk_freq; 1805 int ret; 1806 1807 switch (clk_id) { 1808 case WM8904_CLK_AUTO: 1809 /* We don't have any rate constraints, so just ignore the 1810 * request to disable constraining. 1811 */ 1812 if (!freq) 1813 return 0; 1814 1815 mclk_freq = clk_get_rate(priv->mclk); 1816 /* enable FLL if a different sysclk is desired */ 1817 if (mclk_freq != freq) { 1818 priv->sysclk_src = WM8904_CLK_FLL; 1819 ret = wm8904_set_fll(dai, WM8904_FLL_MCLK, 1820 WM8904_FLL_MCLK, 1821 mclk_freq, freq); 1822 if (ret) 1823 return ret; 1824 break; 1825 } 1826 clk_id = WM8904_CLK_MCLK; 1827 fallthrough; 1828 1829 case WM8904_CLK_MCLK: 1830 priv->sysclk_src = clk_id; 1831 priv->mclk_rate = freq; 1832 break; 1833 1834 case WM8904_CLK_FLL: 1835 priv->sysclk_src = clk_id; 1836 break; 1837 1838 default: 1839 return -EINVAL; 1840 } 1841 1842 dev_dbg(dai->dev, "Clock source is %d at %uHz\n", clk_id, freq); 1843 1844 wm8904_configure_clocking(component); 1845 1846 return 0; 1847 } 1848 1849 static int wm8904_mute(struct snd_soc_dai *codec_dai, int mute, int direction) 1850 { 1851 struct snd_soc_component *component = codec_dai->component; 1852 int val; 1853 1854 if (mute) 1855 val = WM8904_DAC_MUTE; 1856 else 1857 val = 0; 1858 1859 snd_soc_component_update_bits(component, WM8904_DAC_DIGITAL_1, WM8904_DAC_MUTE, val); 1860 1861 return 0; 1862 } 1863 1864 static int wm8904_set_bias_level(struct snd_soc_component *component, 1865 enum snd_soc_bias_level level) 1866 { 1867 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 1868 int ret; 1869 1870 switch (level) { 1871 case SND_SOC_BIAS_ON: 1872 break; 1873 1874 case SND_SOC_BIAS_PREPARE: 1875 /* VMID resistance 2*50k */ 1876 snd_soc_component_update_bits(component, WM8904_VMID_CONTROL_0, 1877 WM8904_VMID_RES_MASK, 1878 0x1 << WM8904_VMID_RES_SHIFT); 1879 1880 /* Normal bias current */ 1881 snd_soc_component_update_bits(component, WM8904_BIAS_CONTROL_0, 1882 WM8904_ISEL_MASK, 2 << WM8904_ISEL_SHIFT); 1883 break; 1884 1885 case SND_SOC_BIAS_STANDBY: 1886 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { 1887 ret = regulator_bulk_enable(ARRAY_SIZE(wm8904->supplies), 1888 wm8904->supplies); 1889 if (ret != 0) { 1890 dev_err(component->dev, 1891 "Failed to enable supplies: %d\n", 1892 ret); 1893 return ret; 1894 } 1895 1896 ret = clk_prepare_enable(wm8904->mclk); 1897 if (ret) { 1898 dev_err(component->dev, 1899 "Failed to enable MCLK: %d\n", ret); 1900 regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), 1901 wm8904->supplies); 1902 return ret; 1903 } 1904 1905 regcache_cache_only(wm8904->regmap, false); 1906 regcache_sync(wm8904->regmap); 1907 1908 /* Enable bias */ 1909 snd_soc_component_update_bits(component, WM8904_BIAS_CONTROL_0, 1910 WM8904_BIAS_ENA, WM8904_BIAS_ENA); 1911 1912 /* Enable VMID, VMID buffering, 2*5k resistance */ 1913 snd_soc_component_update_bits(component, WM8904_VMID_CONTROL_0, 1914 WM8904_VMID_ENA | 1915 WM8904_VMID_RES_MASK, 1916 WM8904_VMID_ENA | 1917 0x3 << WM8904_VMID_RES_SHIFT); 1918 1919 /* Let VMID ramp */ 1920 msleep(1); 1921 } 1922 1923 /* Maintain VMID with 2*250k */ 1924 snd_soc_component_update_bits(component, WM8904_VMID_CONTROL_0, 1925 WM8904_VMID_RES_MASK, 1926 0x2 << WM8904_VMID_RES_SHIFT); 1927 1928 /* Bias current *0.5 */ 1929 snd_soc_component_update_bits(component, WM8904_BIAS_CONTROL_0, 1930 WM8904_ISEL_MASK, 0); 1931 break; 1932 1933 case SND_SOC_BIAS_OFF: 1934 /* Turn off VMID */ 1935 snd_soc_component_update_bits(component, WM8904_VMID_CONTROL_0, 1936 WM8904_VMID_RES_MASK | WM8904_VMID_ENA, 0); 1937 1938 /* Stop bias generation */ 1939 snd_soc_component_update_bits(component, WM8904_BIAS_CONTROL_0, 1940 WM8904_BIAS_ENA, 0); 1941 1942 snd_soc_component_write(component, WM8904_SW_RESET_AND_ID, 0); 1943 regcache_cache_only(wm8904->regmap, true); 1944 regcache_mark_dirty(wm8904->regmap); 1945 1946 regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), 1947 wm8904->supplies); 1948 clk_disable_unprepare(wm8904->mclk); 1949 break; 1950 } 1951 return 0; 1952 } 1953 1954 #define WM8904_RATES SNDRV_PCM_RATE_8000_96000 1955 1956 #define WM8904_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 1957 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 1958 1959 static const struct snd_soc_dai_ops wm8904_dai_ops = { 1960 .set_sysclk = wm8904_set_sysclk, 1961 .set_fmt = wm8904_set_fmt, 1962 .set_tdm_slot = wm8904_set_tdm_slot, 1963 .set_pll = wm8904_set_fll, 1964 .hw_params = wm8904_hw_params, 1965 .mute_stream = wm8904_mute, 1966 .no_capture_mute = 1, 1967 }; 1968 1969 static struct snd_soc_dai_driver wm8904_dai = { 1970 .name = "wm8904-hifi", 1971 .playback = { 1972 .stream_name = "Playback", 1973 .channels_min = 2, 1974 .channels_max = 2, 1975 .rates = WM8904_RATES, 1976 .formats = WM8904_FORMATS, 1977 }, 1978 .capture = { 1979 .stream_name = "Capture", 1980 .channels_min = 2, 1981 .channels_max = 2, 1982 .rates = WM8904_RATES, 1983 .formats = WM8904_FORMATS, 1984 }, 1985 .ops = &wm8904_dai_ops, 1986 .symmetric_rate = 1, 1987 }; 1988 1989 static void wm8904_handle_retune_mobile_pdata(struct snd_soc_component *component) 1990 { 1991 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 1992 struct wm8904_pdata *pdata = wm8904->pdata; 1993 struct snd_kcontrol_new control = 1994 SOC_ENUM_EXT("EQ Mode", 1995 wm8904->retune_mobile_enum, 1996 wm8904_get_retune_mobile_enum, 1997 wm8904_put_retune_mobile_enum); 1998 int ret, i, j; 1999 const char **t; 2000 2001 /* We need an array of texts for the enum API but the number 2002 * of texts is likely to be less than the number of 2003 * configurations due to the sample rate dependency of the 2004 * configurations. */ 2005 wm8904->num_retune_mobile_texts = 0; 2006 wm8904->retune_mobile_texts = NULL; 2007 for (i = 0; i < pdata->num_retune_mobile_cfgs; i++) { 2008 for (j = 0; j < wm8904->num_retune_mobile_texts; j++) { 2009 if (strcmp(pdata->retune_mobile_cfgs[i].name, 2010 wm8904->retune_mobile_texts[j]) == 0) 2011 break; 2012 } 2013 2014 if (j != wm8904->num_retune_mobile_texts) 2015 continue; 2016 2017 /* Expand the array... */ 2018 t = krealloc(wm8904->retune_mobile_texts, 2019 sizeof(char *) * 2020 (wm8904->num_retune_mobile_texts + 1), 2021 GFP_KERNEL); 2022 if (t == NULL) 2023 continue; 2024 2025 /* ...store the new entry... */ 2026 t[wm8904->num_retune_mobile_texts] = 2027 pdata->retune_mobile_cfgs[i].name; 2028 2029 /* ...and remember the new version. */ 2030 wm8904->num_retune_mobile_texts++; 2031 wm8904->retune_mobile_texts = t; 2032 } 2033 2034 dev_dbg(component->dev, "Allocated %d unique ReTune Mobile names\n", 2035 wm8904->num_retune_mobile_texts); 2036 2037 wm8904->retune_mobile_enum.items = wm8904->num_retune_mobile_texts; 2038 wm8904->retune_mobile_enum.texts = wm8904->retune_mobile_texts; 2039 2040 ret = snd_soc_add_component_controls(component, &control, 1); 2041 if (ret != 0) 2042 dev_err(component->dev, 2043 "Failed to add ReTune Mobile control: %d\n", ret); 2044 } 2045 2046 static void wm8904_handle_pdata(struct snd_soc_component *component) 2047 { 2048 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 2049 struct wm8904_pdata *pdata = wm8904->pdata; 2050 int ret, i; 2051 2052 if (!pdata) { 2053 snd_soc_add_component_controls(component, wm8904_eq_controls, 2054 ARRAY_SIZE(wm8904_eq_controls)); 2055 return; 2056 } 2057 2058 dev_dbg(component->dev, "%d DRC configurations\n", pdata->num_drc_cfgs); 2059 2060 if (pdata->num_drc_cfgs) { 2061 struct snd_kcontrol_new control = 2062 SOC_ENUM_EXT("DRC Mode", wm8904->drc_enum, 2063 wm8904_get_drc_enum, wm8904_put_drc_enum); 2064 2065 /* We need an array of texts for the enum API */ 2066 wm8904->drc_texts = kmalloc_array(pdata->num_drc_cfgs, 2067 sizeof(char *), 2068 GFP_KERNEL); 2069 if (!wm8904->drc_texts) 2070 return; 2071 2072 for (i = 0; i < pdata->num_drc_cfgs; i++) 2073 wm8904->drc_texts[i] = pdata->drc_cfgs[i].name; 2074 2075 wm8904->drc_enum.items = pdata->num_drc_cfgs; 2076 wm8904->drc_enum.texts = wm8904->drc_texts; 2077 2078 ret = snd_soc_add_component_controls(component, &control, 1); 2079 if (ret != 0) 2080 dev_err(component->dev, 2081 "Failed to add DRC mode control: %d\n", ret); 2082 2083 wm8904_set_drc(component); 2084 } 2085 2086 dev_dbg(component->dev, "%d ReTune Mobile configurations\n", 2087 pdata->num_retune_mobile_cfgs); 2088 2089 if (pdata->num_retune_mobile_cfgs) 2090 wm8904_handle_retune_mobile_pdata(component); 2091 else 2092 snd_soc_add_component_controls(component, wm8904_eq_controls, 2093 ARRAY_SIZE(wm8904_eq_controls)); 2094 } 2095 2096 2097 static int wm8904_probe(struct snd_soc_component *component) 2098 { 2099 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 2100 2101 switch (wm8904->devtype) { 2102 case WM8904: 2103 break; 2104 case WM8912: 2105 memset(&wm8904_dai.capture, 0, sizeof(wm8904_dai.capture)); 2106 break; 2107 default: 2108 dev_err(component->dev, "Unknown device type %d\n", 2109 wm8904->devtype); 2110 return -EINVAL; 2111 } 2112 2113 wm8904_handle_pdata(component); 2114 2115 wm8904_add_widgets(component); 2116 2117 return 0; 2118 } 2119 2120 static void wm8904_remove(struct snd_soc_component *component) 2121 { 2122 struct wm8904_priv *wm8904 = snd_soc_component_get_drvdata(component); 2123 2124 kfree(wm8904->retune_mobile_texts); 2125 kfree(wm8904->drc_texts); 2126 } 2127 2128 static const struct snd_soc_component_driver soc_component_dev_wm8904 = { 2129 .probe = wm8904_probe, 2130 .remove = wm8904_remove, 2131 .set_bias_level = wm8904_set_bias_level, 2132 .use_pmdown_time = 1, 2133 .endianness = 1, 2134 .non_legacy_dai_naming = 1, 2135 }; 2136 2137 static const struct regmap_config wm8904_regmap = { 2138 .reg_bits = 8, 2139 .val_bits = 16, 2140 2141 .max_register = WM8904_MAX_REGISTER, 2142 .volatile_reg = wm8904_volatile_register, 2143 .readable_reg = wm8904_readable_register, 2144 2145 .cache_type = REGCACHE_RBTREE, 2146 .reg_defaults = wm8904_reg_defaults, 2147 .num_reg_defaults = ARRAY_SIZE(wm8904_reg_defaults), 2148 }; 2149 2150 #ifdef CONFIG_OF 2151 static const struct of_device_id wm8904_of_match[] = { 2152 { 2153 .compatible = "wlf,wm8904", 2154 .data = (void *)WM8904, 2155 }, { 2156 .compatible = "wlf,wm8912", 2157 .data = (void *)WM8912, 2158 }, { 2159 /* sentinel */ 2160 } 2161 }; 2162 MODULE_DEVICE_TABLE(of, wm8904_of_match); 2163 #endif 2164 2165 static const struct i2c_device_id wm8904_i2c_id[]; 2166 2167 static int wm8904_i2c_probe(struct i2c_client *i2c) 2168 { 2169 struct wm8904_priv *wm8904; 2170 unsigned int val; 2171 int ret, i; 2172 2173 wm8904 = devm_kzalloc(&i2c->dev, sizeof(struct wm8904_priv), 2174 GFP_KERNEL); 2175 if (wm8904 == NULL) 2176 return -ENOMEM; 2177 2178 wm8904->mclk = devm_clk_get(&i2c->dev, "mclk"); 2179 if (IS_ERR(wm8904->mclk)) { 2180 ret = PTR_ERR(wm8904->mclk); 2181 dev_err(&i2c->dev, "Failed to get MCLK\n"); 2182 return ret; 2183 } 2184 2185 wm8904->regmap = devm_regmap_init_i2c(i2c, &wm8904_regmap); 2186 if (IS_ERR(wm8904->regmap)) { 2187 ret = PTR_ERR(wm8904->regmap); 2188 dev_err(&i2c->dev, "Failed to allocate register map: %d\n", 2189 ret); 2190 return ret; 2191 } 2192 2193 if (i2c->dev.of_node) { 2194 const struct of_device_id *match; 2195 2196 match = of_match_node(wm8904_of_match, i2c->dev.of_node); 2197 if (match == NULL) 2198 return -EINVAL; 2199 wm8904->devtype = (enum wm8904_type)match->data; 2200 } else { 2201 const struct i2c_device_id *id = 2202 i2c_match_id(wm8904_i2c_id, i2c); 2203 wm8904->devtype = id->driver_data; 2204 } 2205 2206 i2c_set_clientdata(i2c, wm8904); 2207 wm8904->pdata = i2c->dev.platform_data; 2208 2209 for (i = 0; i < ARRAY_SIZE(wm8904->supplies); i++) 2210 wm8904->supplies[i].supply = wm8904_supply_names[i]; 2211 2212 ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8904->supplies), 2213 wm8904->supplies); 2214 if (ret != 0) { 2215 dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret); 2216 return ret; 2217 } 2218 2219 ret = regulator_bulk_enable(ARRAY_SIZE(wm8904->supplies), 2220 wm8904->supplies); 2221 if (ret != 0) { 2222 dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret); 2223 return ret; 2224 } 2225 2226 ret = regmap_read(wm8904->regmap, WM8904_SW_RESET_AND_ID, &val); 2227 if (ret < 0) { 2228 dev_err(&i2c->dev, "Failed to read ID register: %d\n", ret); 2229 goto err_enable; 2230 } 2231 if (val != 0x8904) { 2232 dev_err(&i2c->dev, "Device is not a WM8904, ID is %x\n", val); 2233 ret = -EINVAL; 2234 goto err_enable; 2235 } 2236 2237 ret = regmap_read(wm8904->regmap, WM8904_REVISION, &val); 2238 if (ret < 0) { 2239 dev_err(&i2c->dev, "Failed to read device revision: %d\n", 2240 ret); 2241 goto err_enable; 2242 } 2243 dev_info(&i2c->dev, "revision %c\n", val + 'A'); 2244 2245 ret = regmap_write(wm8904->regmap, WM8904_SW_RESET_AND_ID, 0); 2246 if (ret < 0) { 2247 dev_err(&i2c->dev, "Failed to issue reset: %d\n", ret); 2248 goto err_enable; 2249 } 2250 2251 /* Change some default settings - latch VU and enable ZC */ 2252 regmap_update_bits(wm8904->regmap, WM8904_ADC_DIGITAL_VOLUME_LEFT, 2253 WM8904_ADC_VU, WM8904_ADC_VU); 2254 regmap_update_bits(wm8904->regmap, WM8904_ADC_DIGITAL_VOLUME_RIGHT, 2255 WM8904_ADC_VU, WM8904_ADC_VU); 2256 regmap_update_bits(wm8904->regmap, WM8904_DAC_DIGITAL_VOLUME_LEFT, 2257 WM8904_DAC_VU, WM8904_DAC_VU); 2258 regmap_update_bits(wm8904->regmap, WM8904_DAC_DIGITAL_VOLUME_RIGHT, 2259 WM8904_DAC_VU, WM8904_DAC_VU); 2260 regmap_update_bits(wm8904->regmap, WM8904_ANALOGUE_OUT1_LEFT, 2261 WM8904_HPOUT_VU | WM8904_HPOUTLZC, 2262 WM8904_HPOUT_VU | WM8904_HPOUTLZC); 2263 regmap_update_bits(wm8904->regmap, WM8904_ANALOGUE_OUT1_RIGHT, 2264 WM8904_HPOUT_VU | WM8904_HPOUTRZC, 2265 WM8904_HPOUT_VU | WM8904_HPOUTRZC); 2266 regmap_update_bits(wm8904->regmap, WM8904_ANALOGUE_OUT2_LEFT, 2267 WM8904_LINEOUT_VU | WM8904_LINEOUTLZC, 2268 WM8904_LINEOUT_VU | WM8904_LINEOUTLZC); 2269 regmap_update_bits(wm8904->regmap, WM8904_ANALOGUE_OUT2_RIGHT, 2270 WM8904_LINEOUT_VU | WM8904_LINEOUTRZC, 2271 WM8904_LINEOUT_VU | WM8904_LINEOUTRZC); 2272 regmap_update_bits(wm8904->regmap, WM8904_CLOCK_RATES_0, 2273 WM8904_SR_MODE, 0); 2274 2275 /* Apply configuration from the platform data. */ 2276 if (wm8904->pdata) { 2277 for (i = 0; i < WM8904_GPIO_REGS; i++) { 2278 if (!wm8904->pdata->gpio_cfg[i]) 2279 continue; 2280 2281 regmap_update_bits(wm8904->regmap, 2282 WM8904_GPIO_CONTROL_1 + i, 2283 0xffff, 2284 wm8904->pdata->gpio_cfg[i]); 2285 } 2286 2287 /* Zero is the default value for these anyway */ 2288 for (i = 0; i < WM8904_MIC_REGS; i++) 2289 regmap_update_bits(wm8904->regmap, 2290 WM8904_MIC_BIAS_CONTROL_0 + i, 2291 0xffff, 2292 wm8904->pdata->mic_cfg[i]); 2293 } 2294 2295 /* Set Class W by default - this will be managed by the Class 2296 * G widget at runtime where bypass paths are available. 2297 */ 2298 regmap_update_bits(wm8904->regmap, WM8904_CLASS_W_0, 2299 WM8904_CP_DYN_PWR, WM8904_CP_DYN_PWR); 2300 2301 /* Use normal bias source */ 2302 regmap_update_bits(wm8904->regmap, WM8904_BIAS_CONTROL_0, 2303 WM8904_POBCTRL, 0); 2304 2305 /* Can leave the device powered off until we need it */ 2306 regcache_cache_only(wm8904->regmap, true); 2307 regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies); 2308 2309 ret = devm_snd_soc_register_component(&i2c->dev, 2310 &soc_component_dev_wm8904, &wm8904_dai, 1); 2311 if (ret != 0) 2312 return ret; 2313 2314 return 0; 2315 2316 err_enable: 2317 regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies); 2318 return ret; 2319 } 2320 2321 static const struct i2c_device_id wm8904_i2c_id[] = { 2322 { "wm8904", WM8904 }, 2323 { "wm8912", WM8912 }, 2324 { "wm8918", WM8904 }, /* Actually a subset, updates to follow */ 2325 { } 2326 }; 2327 MODULE_DEVICE_TABLE(i2c, wm8904_i2c_id); 2328 2329 static struct i2c_driver wm8904_i2c_driver = { 2330 .driver = { 2331 .name = "wm8904", 2332 .of_match_table = of_match_ptr(wm8904_of_match), 2333 }, 2334 .probe_new = wm8904_i2c_probe, 2335 .id_table = wm8904_i2c_id, 2336 }; 2337 2338 module_i2c_driver(wm8904_i2c_driver); 2339 2340 MODULE_DESCRIPTION("ASoC WM8904 driver"); 2341 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); 2342 MODULE_LICENSE("GPL"); 2343