wm8770.c (19462B)
1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * wm8770.c -- WM8770 ALSA SoC Audio driver 4 * 5 * Copyright 2010 Wolfson Microelectronics plc 6 * 7 * Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com> 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/of_device.h> 15#include <linux/pm.h> 16#include <linux/spi/spi.h> 17#include <linux/regmap.h> 18#include <linux/regulator/consumer.h> 19#include <linux/slab.h> 20#include <sound/core.h> 21#include <sound/pcm.h> 22#include <sound/pcm_params.h> 23#include <sound/soc.h> 24#include <sound/initval.h> 25#include <sound/tlv.h> 26 27#include "wm8770.h" 28 29#define WM8770_NUM_SUPPLIES 3 30static const char *wm8770_supply_names[WM8770_NUM_SUPPLIES] = { 31 "AVDD1", 32 "AVDD2", 33 "DVDD" 34}; 35 36static const struct reg_default wm8770_reg_defaults[] = { 37 { 0, 0x7f }, 38 { 1, 0x7f }, 39 { 2, 0x7f }, 40 { 3, 0x7f }, 41 { 4, 0x7f }, 42 { 5, 0x7f }, 43 { 6, 0x7f }, 44 { 7, 0x7f }, 45 { 8, 0x7f }, 46 { 9, 0xff }, 47 { 10, 0xff }, 48 { 11, 0xff }, 49 { 12, 0xff }, 50 { 13, 0xff }, 51 { 14, 0xff }, 52 { 15, 0xff }, 53 { 16, 0xff }, 54 { 17, 0xff }, 55 { 18, 0 }, 56 { 19, 0x90 }, 57 { 20, 0 }, 58 { 21, 0 }, 59 { 22, 0x22 }, 60 { 23, 0x22 }, 61 { 24, 0x3e }, 62 { 25, 0xc }, 63 { 26, 0xc }, 64 { 27, 0x100 }, 65 { 28, 0x189 }, 66 { 29, 0x189 }, 67 { 30, 0x8770 }, 68}; 69 70static bool wm8770_volatile_reg(struct device *dev, unsigned int reg) 71{ 72 switch (reg) { 73 case WM8770_RESET: 74 return true; 75 default: 76 return false; 77 } 78} 79 80struct wm8770_priv { 81 struct regmap *regmap; 82 struct regulator_bulk_data supplies[WM8770_NUM_SUPPLIES]; 83 struct notifier_block disable_nb[WM8770_NUM_SUPPLIES]; 84 struct snd_soc_component *component; 85 int sysclk; 86}; 87 88static int vout12supply_event(struct snd_soc_dapm_widget *w, 89 struct snd_kcontrol *kcontrol, int event); 90static int vout34supply_event(struct snd_soc_dapm_widget *w, 91 struct snd_kcontrol *kcontrol, int event); 92 93/* 94 * We can't use the same notifier block for more than one supply and 95 * there's no way I can see to get from a callback to the caller 96 * except container_of(). 97 */ 98#define WM8770_REGULATOR_EVENT(n) \ 99static int wm8770_regulator_event_##n(struct notifier_block *nb, \ 100 unsigned long event, void *data) \ 101{ \ 102 struct wm8770_priv *wm8770 = container_of(nb, struct wm8770_priv, \ 103 disable_nb[n]); \ 104 if (event & REGULATOR_EVENT_DISABLE) { \ 105 regcache_mark_dirty(wm8770->regmap); \ 106 } \ 107 return 0; \ 108} 109 110WM8770_REGULATOR_EVENT(0) 111WM8770_REGULATOR_EVENT(1) 112WM8770_REGULATOR_EVENT(2) 113 114static const DECLARE_TLV_DB_SCALE(adc_tlv, -1200, 100, 0); 115static const DECLARE_TLV_DB_SCALE(dac_dig_tlv, -12750, 50, 1); 116static const DECLARE_TLV_DB_SCALE(dac_alg_tlv, -12700, 100, 1); 117 118static const char *dac_phase_text[][2] = { 119 { "DAC1 Normal", "DAC1 Inverted" }, 120 { "DAC2 Normal", "DAC2 Inverted" }, 121 { "DAC3 Normal", "DAC3 Inverted" }, 122 { "DAC4 Normal", "DAC4 Inverted" }, 123}; 124 125static const struct soc_enum dac_phase[] = { 126 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 0, 1, 2, dac_phase_text[0]), 127 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 2, 3, 2, dac_phase_text[1]), 128 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 4, 5, 2, dac_phase_text[2]), 129 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 6, 7, 2, dac_phase_text[3]), 130}; 131 132static const struct snd_kcontrol_new wm8770_snd_controls[] = { 133 /* global DAC playback controls */ 134 SOC_SINGLE_TLV("DAC Playback Volume", WM8770_MSDIGVOL, 0, 255, 0, 135 dac_dig_tlv), 136 SOC_SINGLE("DAC Playback Switch", WM8770_DACMUTE, 4, 1, 1), 137 SOC_SINGLE("DAC Playback ZC Switch", WM8770_DACCTRL1, 0, 1, 0), 138 139 /* global VOUT playback controls */ 140 SOC_SINGLE_TLV("VOUT Playback Volume", WM8770_MSALGVOL, 0, 127, 0, 141 dac_alg_tlv), 142 SOC_SINGLE("VOUT Playback ZC Switch", WM8770_MSALGVOL, 7, 1, 0), 143 144 /* VOUT1/2/3/4 specific controls */ 145 SOC_DOUBLE_R_TLV("VOUT1 Playback Volume", WM8770_VOUT1LVOL, 146 WM8770_VOUT1RVOL, 0, 127, 0, dac_alg_tlv), 147 SOC_DOUBLE_R("VOUT1 Playback ZC Switch", WM8770_VOUT1LVOL, 148 WM8770_VOUT1RVOL, 7, 1, 0), 149 SOC_DOUBLE_R_TLV("VOUT2 Playback Volume", WM8770_VOUT2LVOL, 150 WM8770_VOUT2RVOL, 0, 127, 0, dac_alg_tlv), 151 SOC_DOUBLE_R("VOUT2 Playback ZC Switch", WM8770_VOUT2LVOL, 152 WM8770_VOUT2RVOL, 7, 1, 0), 153 SOC_DOUBLE_R_TLV("VOUT3 Playback Volume", WM8770_VOUT3LVOL, 154 WM8770_VOUT3RVOL, 0, 127, 0, dac_alg_tlv), 155 SOC_DOUBLE_R("VOUT3 Playback ZC Switch", WM8770_VOUT3LVOL, 156 WM8770_VOUT3RVOL, 7, 1, 0), 157 SOC_DOUBLE_R_TLV("VOUT4 Playback Volume", WM8770_VOUT4LVOL, 158 WM8770_VOUT4RVOL, 0, 127, 0, dac_alg_tlv), 159 SOC_DOUBLE_R("VOUT4 Playback ZC Switch", WM8770_VOUT4LVOL, 160 WM8770_VOUT4RVOL, 7, 1, 0), 161 162 /* DAC1/2/3/4 specific controls */ 163 SOC_DOUBLE_R_TLV("DAC1 Playback Volume", WM8770_DAC1LVOL, 164 WM8770_DAC1RVOL, 0, 255, 0, dac_dig_tlv), 165 SOC_SINGLE("DAC1 Deemphasis Switch", WM8770_DACCTRL2, 0, 1, 0), 166 SOC_ENUM("DAC1 Phase", dac_phase[0]), 167 SOC_DOUBLE_R_TLV("DAC2 Playback Volume", WM8770_DAC2LVOL, 168 WM8770_DAC2RVOL, 0, 255, 0, dac_dig_tlv), 169 SOC_SINGLE("DAC2 Deemphasis Switch", WM8770_DACCTRL2, 1, 1, 0), 170 SOC_ENUM("DAC2 Phase", dac_phase[1]), 171 SOC_DOUBLE_R_TLV("DAC3 Playback Volume", WM8770_DAC3LVOL, 172 WM8770_DAC3RVOL, 0, 255, 0, dac_dig_tlv), 173 SOC_SINGLE("DAC3 Deemphasis Switch", WM8770_DACCTRL2, 2, 1, 0), 174 SOC_ENUM("DAC3 Phase", dac_phase[2]), 175 SOC_DOUBLE_R_TLV("DAC4 Playback Volume", WM8770_DAC4LVOL, 176 WM8770_DAC4RVOL, 0, 255, 0, dac_dig_tlv), 177 SOC_SINGLE("DAC4 Deemphasis Switch", WM8770_DACCTRL2, 3, 1, 0), 178 SOC_ENUM("DAC4 Phase", dac_phase[3]), 179 180 /* ADC specific controls */ 181 SOC_DOUBLE_R_TLV("Capture Volume", WM8770_ADCLCTRL, WM8770_ADCRCTRL, 182 0, 31, 0, adc_tlv), 183 SOC_DOUBLE_R("Capture Switch", WM8770_ADCLCTRL, WM8770_ADCRCTRL, 184 5, 1, 1), 185 186 /* other controls */ 187 SOC_SINGLE("ADC 128x Oversampling Switch", WM8770_MSTRCTRL, 3, 1, 0), 188 SOC_SINGLE("ADC Highpass Filter Switch", WM8770_IFACECTRL, 8, 1, 1) 189}; 190 191static const char *ain_text[] = { 192 "AIN1", "AIN2", "AIN3", "AIN4", 193 "AIN5", "AIN6", "AIN7", "AIN8" 194}; 195 196static SOC_ENUM_DOUBLE_DECL(ain_enum, 197 WM8770_ADCMUX, 0, 4, ain_text); 198 199static const struct snd_kcontrol_new ain_mux = 200 SOC_DAPM_ENUM("Capture Mux", ain_enum); 201 202static const struct snd_kcontrol_new vout1_mix_controls[] = { 203 SOC_DAPM_SINGLE("DAC1 Switch", WM8770_OUTMUX1, 0, 1, 0), 204 SOC_DAPM_SINGLE("AUX1 Switch", WM8770_OUTMUX1, 1, 1, 0), 205 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 2, 1, 0) 206}; 207 208static const struct snd_kcontrol_new vout2_mix_controls[] = { 209 SOC_DAPM_SINGLE("DAC2 Switch", WM8770_OUTMUX1, 3, 1, 0), 210 SOC_DAPM_SINGLE("AUX2 Switch", WM8770_OUTMUX1, 4, 1, 0), 211 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 5, 1, 0) 212}; 213 214static const struct snd_kcontrol_new vout3_mix_controls[] = { 215 SOC_DAPM_SINGLE("DAC3 Switch", WM8770_OUTMUX2, 0, 1, 0), 216 SOC_DAPM_SINGLE("AUX3 Switch", WM8770_OUTMUX2, 1, 1, 0), 217 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 2, 1, 0) 218}; 219 220static const struct snd_kcontrol_new vout4_mix_controls[] = { 221 SOC_DAPM_SINGLE("DAC4 Switch", WM8770_OUTMUX2, 3, 1, 0), 222 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 4, 1, 0) 223}; 224 225static const struct snd_soc_dapm_widget wm8770_dapm_widgets[] = { 226 SND_SOC_DAPM_INPUT("AUX1"), 227 SND_SOC_DAPM_INPUT("AUX2"), 228 SND_SOC_DAPM_INPUT("AUX3"), 229 230 SND_SOC_DAPM_INPUT("AIN1"), 231 SND_SOC_DAPM_INPUT("AIN2"), 232 SND_SOC_DAPM_INPUT("AIN3"), 233 SND_SOC_DAPM_INPUT("AIN4"), 234 SND_SOC_DAPM_INPUT("AIN5"), 235 SND_SOC_DAPM_INPUT("AIN6"), 236 SND_SOC_DAPM_INPUT("AIN7"), 237 SND_SOC_DAPM_INPUT("AIN8"), 238 239 SND_SOC_DAPM_MUX("Capture Mux", WM8770_ADCMUX, 8, 1, &ain_mux), 240 241 SND_SOC_DAPM_ADC("ADC", "Capture", WM8770_PWDNCTRL, 1, 1), 242 243 SND_SOC_DAPM_DAC("DAC1", "Playback", WM8770_PWDNCTRL, 2, 1), 244 SND_SOC_DAPM_DAC("DAC2", "Playback", WM8770_PWDNCTRL, 3, 1), 245 SND_SOC_DAPM_DAC("DAC3", "Playback", WM8770_PWDNCTRL, 4, 1), 246 SND_SOC_DAPM_DAC("DAC4", "Playback", WM8770_PWDNCTRL, 5, 1), 247 248 SND_SOC_DAPM_SUPPLY("VOUT12 Supply", SND_SOC_NOPM, 0, 0, 249 vout12supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 250 SND_SOC_DAPM_SUPPLY("VOUT34 Supply", SND_SOC_NOPM, 0, 0, 251 vout34supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 252 253 SND_SOC_DAPM_MIXER("VOUT1 Mixer", SND_SOC_NOPM, 0, 0, 254 vout1_mix_controls, ARRAY_SIZE(vout1_mix_controls)), 255 SND_SOC_DAPM_MIXER("VOUT2 Mixer", SND_SOC_NOPM, 0, 0, 256 vout2_mix_controls, ARRAY_SIZE(vout2_mix_controls)), 257 SND_SOC_DAPM_MIXER("VOUT3 Mixer", SND_SOC_NOPM, 0, 0, 258 vout3_mix_controls, ARRAY_SIZE(vout3_mix_controls)), 259 SND_SOC_DAPM_MIXER("VOUT4 Mixer", SND_SOC_NOPM, 0, 0, 260 vout4_mix_controls, ARRAY_SIZE(vout4_mix_controls)), 261 262 SND_SOC_DAPM_OUTPUT("VOUT1"), 263 SND_SOC_DAPM_OUTPUT("VOUT2"), 264 SND_SOC_DAPM_OUTPUT("VOUT3"), 265 SND_SOC_DAPM_OUTPUT("VOUT4") 266}; 267 268static const struct snd_soc_dapm_route wm8770_intercon[] = { 269 { "Capture Mux", "AIN1", "AIN1" }, 270 { "Capture Mux", "AIN2", "AIN2" }, 271 { "Capture Mux", "AIN3", "AIN3" }, 272 { "Capture Mux", "AIN4", "AIN4" }, 273 { "Capture Mux", "AIN5", "AIN5" }, 274 { "Capture Mux", "AIN6", "AIN6" }, 275 { "Capture Mux", "AIN7", "AIN7" }, 276 { "Capture Mux", "AIN8", "AIN8" }, 277 278 { "ADC", NULL, "Capture Mux" }, 279 280 { "VOUT1 Mixer", NULL, "VOUT12 Supply" }, 281 { "VOUT1 Mixer", "DAC1 Switch", "DAC1" }, 282 { "VOUT1 Mixer", "AUX1 Switch", "AUX1" }, 283 { "VOUT1 Mixer", "Bypass Switch", "Capture Mux" }, 284 285 { "VOUT2 Mixer", NULL, "VOUT12 Supply" }, 286 { "VOUT2 Mixer", "DAC2 Switch", "DAC2" }, 287 { "VOUT2 Mixer", "AUX2 Switch", "AUX2" }, 288 { "VOUT2 Mixer", "Bypass Switch", "Capture Mux" }, 289 290 { "VOUT3 Mixer", NULL, "VOUT34 Supply" }, 291 { "VOUT3 Mixer", "DAC3 Switch", "DAC3" }, 292 { "VOUT3 Mixer", "AUX3 Switch", "AUX3" }, 293 { "VOUT3 Mixer", "Bypass Switch", "Capture Mux" }, 294 295 { "VOUT4 Mixer", NULL, "VOUT34 Supply" }, 296 { "VOUT4 Mixer", "DAC4 Switch", "DAC4" }, 297 { "VOUT4 Mixer", "Bypass Switch", "Capture Mux" }, 298 299 { "VOUT1", NULL, "VOUT1 Mixer" }, 300 { "VOUT2", NULL, "VOUT2 Mixer" }, 301 { "VOUT3", NULL, "VOUT3 Mixer" }, 302 { "VOUT4", NULL, "VOUT4 Mixer" } 303}; 304 305static int vout12supply_event(struct snd_soc_dapm_widget *w, 306 struct snd_kcontrol *kcontrol, int event) 307{ 308 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); 309 310 switch (event) { 311 case SND_SOC_DAPM_PRE_PMU: 312 snd_soc_component_update_bits(component, WM8770_OUTMUX1, 0x180, 0); 313 break; 314 case SND_SOC_DAPM_POST_PMD: 315 snd_soc_component_update_bits(component, WM8770_OUTMUX1, 0x180, 0x180); 316 break; 317 } 318 319 return 0; 320} 321 322static int vout34supply_event(struct snd_soc_dapm_widget *w, 323 struct snd_kcontrol *kcontrol, int event) 324{ 325 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); 326 327 switch (event) { 328 case SND_SOC_DAPM_PRE_PMU: 329 snd_soc_component_update_bits(component, WM8770_OUTMUX2, 0x180, 0); 330 break; 331 case SND_SOC_DAPM_POST_PMD: 332 snd_soc_component_update_bits(component, WM8770_OUTMUX2, 0x180, 0x180); 333 break; 334 } 335 336 return 0; 337} 338 339static int wm8770_reset(struct snd_soc_component *component) 340{ 341 return snd_soc_component_write(component, WM8770_RESET, 0); 342} 343 344static int wm8770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 345{ 346 struct snd_soc_component *component; 347 int iface, master; 348 349 component = dai->component; 350 351 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 352 case SND_SOC_DAIFMT_CBM_CFM: 353 master = 0x100; 354 break; 355 case SND_SOC_DAIFMT_CBS_CFS: 356 master = 0; 357 break; 358 default: 359 return -EINVAL; 360 } 361 362 iface = 0; 363 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 364 case SND_SOC_DAIFMT_I2S: 365 iface |= 0x2; 366 break; 367 case SND_SOC_DAIFMT_RIGHT_J: 368 break; 369 case SND_SOC_DAIFMT_LEFT_J: 370 iface |= 0x1; 371 break; 372 default: 373 return -EINVAL; 374 } 375 376 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 377 case SND_SOC_DAIFMT_NB_NF: 378 break; 379 case SND_SOC_DAIFMT_IB_IF: 380 iface |= 0xc; 381 break; 382 case SND_SOC_DAIFMT_IB_NF: 383 iface |= 0x8; 384 break; 385 case SND_SOC_DAIFMT_NB_IF: 386 iface |= 0x4; 387 break; 388 default: 389 return -EINVAL; 390 } 391 392 snd_soc_component_update_bits(component, WM8770_IFACECTRL, 0xf, iface); 393 snd_soc_component_update_bits(component, WM8770_MSTRCTRL, 0x100, master); 394 395 return 0; 396} 397 398static const int mclk_ratios[] = { 399 128, 400 192, 401 256, 402 384, 403 512, 404 768 405}; 406 407static int wm8770_hw_params(struct snd_pcm_substream *substream, 408 struct snd_pcm_hw_params *params, 409 struct snd_soc_dai *dai) 410{ 411 struct snd_soc_component *component; 412 struct wm8770_priv *wm8770; 413 int i; 414 int iface; 415 int shift; 416 int ratio; 417 418 component = dai->component; 419 wm8770 = snd_soc_component_get_drvdata(component); 420 421 iface = 0; 422 switch (params_width(params)) { 423 case 16: 424 break; 425 case 20: 426 iface |= 0x10; 427 break; 428 case 24: 429 iface |= 0x20; 430 break; 431 case 32: 432 iface |= 0x30; 433 break; 434 } 435 436 switch (substream->stream) { 437 case SNDRV_PCM_STREAM_PLAYBACK: 438 i = 0; 439 shift = 4; 440 break; 441 case SNDRV_PCM_STREAM_CAPTURE: 442 i = 2; 443 shift = 0; 444 break; 445 default: 446 return -EINVAL; 447 } 448 449 /* Only need to set MCLK/LRCLK ratio if we're master */ 450 if (snd_soc_component_read(component, WM8770_MSTRCTRL) & 0x100) { 451 for (; i < ARRAY_SIZE(mclk_ratios); ++i) { 452 ratio = wm8770->sysclk / params_rate(params); 453 if (ratio == mclk_ratios[i]) 454 break; 455 } 456 457 if (i == ARRAY_SIZE(mclk_ratios)) { 458 dev_err(component->dev, 459 "Unable to configure MCLK ratio %d/%d\n", 460 wm8770->sysclk, params_rate(params)); 461 return -EINVAL; 462 } 463 464 dev_dbg(component->dev, "MCLK is %dfs\n", mclk_ratios[i]); 465 466 snd_soc_component_update_bits(component, WM8770_MSTRCTRL, 0x7 << shift, 467 i << shift); 468 } 469 470 snd_soc_component_update_bits(component, WM8770_IFACECTRL, 0x30, iface); 471 472 return 0; 473} 474 475static int wm8770_mute(struct snd_soc_dai *dai, int mute, int direction) 476{ 477 struct snd_soc_component *component; 478 479 component = dai->component; 480 return snd_soc_component_update_bits(component, WM8770_DACMUTE, 0x10, 481 !!mute << 4); 482} 483 484static int wm8770_set_sysclk(struct snd_soc_dai *dai, 485 int clk_id, unsigned int freq, int dir) 486{ 487 struct snd_soc_component *component; 488 struct wm8770_priv *wm8770; 489 490 component = dai->component; 491 wm8770 = snd_soc_component_get_drvdata(component); 492 wm8770->sysclk = freq; 493 return 0; 494} 495 496static int wm8770_set_bias_level(struct snd_soc_component *component, 497 enum snd_soc_bias_level level) 498{ 499 int ret; 500 struct wm8770_priv *wm8770; 501 502 wm8770 = snd_soc_component_get_drvdata(component); 503 504 switch (level) { 505 case SND_SOC_BIAS_ON: 506 break; 507 case SND_SOC_BIAS_PREPARE: 508 break; 509 case SND_SOC_BIAS_STANDBY: 510 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { 511 ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies), 512 wm8770->supplies); 513 if (ret) { 514 dev_err(component->dev, 515 "Failed to enable supplies: %d\n", 516 ret); 517 return ret; 518 } 519 520 regcache_sync(wm8770->regmap); 521 522 /* global powerup */ 523 snd_soc_component_write(component, WM8770_PWDNCTRL, 0); 524 } 525 break; 526 case SND_SOC_BIAS_OFF: 527 /* global powerdown */ 528 snd_soc_component_write(component, WM8770_PWDNCTRL, 1); 529 regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), 530 wm8770->supplies); 531 break; 532 } 533 534 return 0; 535} 536 537#define WM8770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 538 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 539 540static const struct snd_soc_dai_ops wm8770_dai_ops = { 541 .mute_stream = wm8770_mute, 542 .hw_params = wm8770_hw_params, 543 .set_fmt = wm8770_set_fmt, 544 .set_sysclk = wm8770_set_sysclk, 545 .no_capture_mute = 1, 546}; 547 548static struct snd_soc_dai_driver wm8770_dai = { 549 .name = "wm8770-hifi", 550 .playback = { 551 .stream_name = "Playback", 552 .channels_min = 2, 553 .channels_max = 2, 554 .rates = SNDRV_PCM_RATE_8000_192000, 555 .formats = WM8770_FORMATS 556 }, 557 .capture = { 558 .stream_name = "Capture", 559 .channels_min = 2, 560 .channels_max = 2, 561 .rates = SNDRV_PCM_RATE_8000_96000, 562 .formats = WM8770_FORMATS 563 }, 564 .ops = &wm8770_dai_ops, 565 .symmetric_rate = 1 566}; 567 568static int wm8770_probe(struct snd_soc_component *component) 569{ 570 struct wm8770_priv *wm8770; 571 int ret; 572 573 wm8770 = snd_soc_component_get_drvdata(component); 574 wm8770->component = component; 575 576 ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies), 577 wm8770->supplies); 578 if (ret) { 579 dev_err(component->dev, "Failed to enable supplies: %d\n", ret); 580 return ret; 581 } 582 583 ret = wm8770_reset(component); 584 if (ret < 0) { 585 dev_err(component->dev, "Failed to issue reset: %d\n", ret); 586 goto err_reg_enable; 587 } 588 589 /* latch the volume update bits */ 590 snd_soc_component_update_bits(component, WM8770_MSDIGVOL, 0x100, 0x100); 591 snd_soc_component_update_bits(component, WM8770_MSALGVOL, 0x100, 0x100); 592 snd_soc_component_update_bits(component, WM8770_VOUT1RVOL, 0x100, 0x100); 593 snd_soc_component_update_bits(component, WM8770_VOUT2RVOL, 0x100, 0x100); 594 snd_soc_component_update_bits(component, WM8770_VOUT3RVOL, 0x100, 0x100); 595 snd_soc_component_update_bits(component, WM8770_VOUT4RVOL, 0x100, 0x100); 596 snd_soc_component_update_bits(component, WM8770_DAC1RVOL, 0x100, 0x100); 597 snd_soc_component_update_bits(component, WM8770_DAC2RVOL, 0x100, 0x100); 598 snd_soc_component_update_bits(component, WM8770_DAC3RVOL, 0x100, 0x100); 599 snd_soc_component_update_bits(component, WM8770_DAC4RVOL, 0x100, 0x100); 600 601 /* mute all DACs */ 602 snd_soc_component_update_bits(component, WM8770_DACMUTE, 0x10, 0x10); 603 604err_reg_enable: 605 regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), wm8770->supplies); 606 return ret; 607} 608 609static const struct snd_soc_component_driver soc_component_dev_wm8770 = { 610 .probe = wm8770_probe, 611 .set_bias_level = wm8770_set_bias_level, 612 .controls = wm8770_snd_controls, 613 .num_controls = ARRAY_SIZE(wm8770_snd_controls), 614 .dapm_widgets = wm8770_dapm_widgets, 615 .num_dapm_widgets = ARRAY_SIZE(wm8770_dapm_widgets), 616 .dapm_routes = wm8770_intercon, 617 .num_dapm_routes = ARRAY_SIZE(wm8770_intercon), 618 .use_pmdown_time = 1, 619 .endianness = 1, 620 .non_legacy_dai_naming = 1, 621}; 622 623static const struct of_device_id wm8770_of_match[] = { 624 { .compatible = "wlf,wm8770", }, 625 { } 626}; 627MODULE_DEVICE_TABLE(of, wm8770_of_match); 628 629static const struct regmap_config wm8770_regmap = { 630 .reg_bits = 7, 631 .val_bits = 9, 632 .max_register = WM8770_RESET, 633 634 .reg_defaults = wm8770_reg_defaults, 635 .num_reg_defaults = ARRAY_SIZE(wm8770_reg_defaults), 636 .cache_type = REGCACHE_RBTREE, 637 638 .volatile_reg = wm8770_volatile_reg, 639}; 640 641static int wm8770_spi_probe(struct spi_device *spi) 642{ 643 struct wm8770_priv *wm8770; 644 int ret, i; 645 646 wm8770 = devm_kzalloc(&spi->dev, sizeof(struct wm8770_priv), 647 GFP_KERNEL); 648 if (!wm8770) 649 return -ENOMEM; 650 651 for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++) 652 wm8770->supplies[i].supply = wm8770_supply_names[i]; 653 654 ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8770->supplies), 655 wm8770->supplies); 656 if (ret) { 657 dev_err(&spi->dev, "Failed to request supplies: %d\n", ret); 658 return ret; 659 } 660 661 wm8770->disable_nb[0].notifier_call = wm8770_regulator_event_0; 662 wm8770->disable_nb[1].notifier_call = wm8770_regulator_event_1; 663 wm8770->disable_nb[2].notifier_call = wm8770_regulator_event_2; 664 665 /* This should really be moved into the regulator core */ 666 for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++) { 667 ret = devm_regulator_register_notifier( 668 wm8770->supplies[i].consumer, 669 &wm8770->disable_nb[i]); 670 if (ret) { 671 dev_err(&spi->dev, 672 "Failed to register regulator notifier: %d\n", 673 ret); 674 } 675 } 676 677 wm8770->regmap = devm_regmap_init_spi(spi, &wm8770_regmap); 678 if (IS_ERR(wm8770->regmap)) 679 return PTR_ERR(wm8770->regmap); 680 681 spi_set_drvdata(spi, wm8770); 682 683 ret = devm_snd_soc_register_component(&spi->dev, 684 &soc_component_dev_wm8770, &wm8770_dai, 1); 685 686 return ret; 687} 688 689static struct spi_driver wm8770_spi_driver = { 690 .driver = { 691 .name = "wm8770", 692 .of_match_table = wm8770_of_match, 693 }, 694 .probe = wm8770_spi_probe, 695}; 696 697module_spi_driver(wm8770_spi_driver); 698 699MODULE_DESCRIPTION("ASoC WM8770 driver"); 700MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>"); 701MODULE_LICENSE("GPL");