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