1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * wm8737.c -- WM8737 ALSA SoC Audio driver 4 * 5 * Copyright 2010 Wolfson Microelectronics plc 6 * 7 * Author: Mark Brown <broonie@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/i2c.h> 16 #include <linux/regmap.h> 17 #include <linux/regulator/consumer.h> 18 #include <linux/spi/spi.h> 19 #include <linux/slab.h> 20 #include <linux/of_device.h> 21 #include <sound/core.h> 22 #include <sound/pcm.h> 23 #include <sound/pcm_params.h> 24 #include <sound/soc.h> 25 #include <sound/soc-dapm.h> 26 #include <sound/initval.h> 27 #include <sound/tlv.h> 28 29 #include "wm8737.h" 30 31 #define WM8737_NUM_SUPPLIES 4 32 static const char *wm8737_supply_names[WM8737_NUM_SUPPLIES] = { 33 "DCVDD", 34 "DBVDD", 35 "AVDD", 36 "MVDD", 37 }; 38 39 /* codec private data */ 40 struct wm8737_priv { 41 struct regmap *regmap; 42 struct regulator_bulk_data supplies[WM8737_NUM_SUPPLIES]; 43 unsigned int mclk; 44 }; 45 46 static const struct reg_default wm8737_reg_defaults[] = { 47 { 0, 0x00C3 }, /* R0 - Left PGA volume */ 48 { 1, 0x00C3 }, /* R1 - Right PGA volume */ 49 { 2, 0x0007 }, /* R2 - AUDIO path L */ 50 { 3, 0x0007 }, /* R3 - AUDIO path R */ 51 { 4, 0x0000 }, /* R4 - 3D Enhance */ 52 { 5, 0x0000 }, /* R5 - ADC Control */ 53 { 6, 0x0000 }, /* R6 - Power Management */ 54 { 7, 0x000A }, /* R7 - Audio Format */ 55 { 8, 0x0000 }, /* R8 - Clocking */ 56 { 9, 0x000F }, /* R9 - MIC Preamp Control */ 57 { 10, 0x0003 }, /* R10 - Misc Bias Control */ 58 { 11, 0x0000 }, /* R11 - Noise Gate */ 59 { 12, 0x007C }, /* R12 - ALC1 */ 60 { 13, 0x0000 }, /* R13 - ALC2 */ 61 { 14, 0x0032 }, /* R14 - ALC3 */ 62 }; 63 64 static bool wm8737_volatile(struct device *dev, unsigned int reg) 65 { 66 switch (reg) { 67 case WM8737_RESET: 68 return true; 69 default: 70 return false; 71 } 72 } 73 74 static int wm8737_reset(struct snd_soc_component *component) 75 { 76 return snd_soc_component_write(component, WM8737_RESET, 0); 77 } 78 79 static const DECLARE_TLV_DB_RANGE(micboost_tlv, 80 0, 0, TLV_DB_SCALE_ITEM(1300, 0, 0), 81 1, 1, TLV_DB_SCALE_ITEM(1800, 0, 0), 82 2, 2, TLV_DB_SCALE_ITEM(2800, 0, 0), 83 3, 3, TLV_DB_SCALE_ITEM(3300, 0, 0) 84 ); 85 static const DECLARE_TLV_DB_SCALE(pga_tlv, -9750, 50, 1); 86 static const DECLARE_TLV_DB_SCALE(adc_tlv, -600, 600, 0); 87 static const DECLARE_TLV_DB_SCALE(ng_tlv, -7800, 600, 0); 88 static const DECLARE_TLV_DB_SCALE(alc_max_tlv, -1200, 600, 0); 89 static const DECLARE_TLV_DB_SCALE(alc_target_tlv, -1800, 100, 0); 90 91 static const char *micbias_enum_text[] = { 92 "25%", 93 "50%", 94 "75%", 95 "100%", 96 }; 97 98 static SOC_ENUM_SINGLE_DECL(micbias_enum, 99 WM8737_MIC_PREAMP_CONTROL, 0, micbias_enum_text); 100 101 static const char *low_cutoff_text[] = { 102 "Low", "High" 103 }; 104 105 static SOC_ENUM_SINGLE_DECL(low_3d, 106 WM8737_3D_ENHANCE, 6, low_cutoff_text); 107 108 static const char *high_cutoff_text[] = { 109 "High", "Low" 110 }; 111 112 static SOC_ENUM_SINGLE_DECL(high_3d, 113 WM8737_3D_ENHANCE, 5, high_cutoff_text); 114 115 static const char *alc_fn_text[] = { 116 "Disabled", "Right", "Left", "Stereo" 117 }; 118 119 static SOC_ENUM_SINGLE_DECL(alc_fn, 120 WM8737_ALC1, 7, alc_fn_text); 121 122 static const char *alc_hold_text[] = { 123 "0", "2.67ms", "5.33ms", "10.66ms", "21.32ms", "42.64ms", "85.28ms", 124 "170.56ms", "341.12ms", "682.24ms", "1.364s", "2.728s", "5.458s", 125 "10.916s", "21.832s", "43.691s" 126 }; 127 128 static SOC_ENUM_SINGLE_DECL(alc_hold, 129 WM8737_ALC2, 0, alc_hold_text); 130 131 static const char *alc_atk_text[] = { 132 "8.4ms", "16.8ms", "33.6ms", "67.2ms", "134.4ms", "268.8ms", "537.6ms", 133 "1.075s", "2.15s", "4.3s", "8.6s" 134 }; 135 136 static SOC_ENUM_SINGLE_DECL(alc_atk, 137 WM8737_ALC3, 0, alc_atk_text); 138 139 static const char *alc_dcy_text[] = { 140 "33.6ms", "67.2ms", "134.4ms", "268.8ms", "537.6ms", "1.075s", "2.15s", 141 "4.3s", "8.6s", "17.2s", "34.41s" 142 }; 143 144 static SOC_ENUM_SINGLE_DECL(alc_dcy, 145 WM8737_ALC3, 4, alc_dcy_text); 146 147 static const struct snd_kcontrol_new wm8737_snd_controls[] = { 148 SOC_DOUBLE_R_TLV("Mic Boost Volume", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R, 149 6, 3, 0, micboost_tlv), 150 SOC_DOUBLE_R("Mic Boost Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R, 151 4, 1, 0), 152 SOC_DOUBLE("Mic ZC Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R, 153 3, 1, 0), 154 155 SOC_DOUBLE_R_TLV("Capture Volume", WM8737_LEFT_PGA_VOLUME, 156 WM8737_RIGHT_PGA_VOLUME, 0, 255, 0, pga_tlv), 157 SOC_DOUBLE("Capture ZC Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R, 158 2, 1, 0), 159 160 SOC_DOUBLE("INPUT1 DC Bias Switch", WM8737_MISC_BIAS_CONTROL, 0, 1, 1, 0), 161 162 SOC_ENUM("Mic PGA Bias", micbias_enum), 163 SOC_SINGLE("ADC Low Power Switch", WM8737_ADC_CONTROL, 2, 1, 0), 164 SOC_SINGLE("High Pass Filter Switch", WM8737_ADC_CONTROL, 0, 1, 1), 165 SOC_DOUBLE("Polarity Invert Switch", WM8737_ADC_CONTROL, 5, 6, 1, 0), 166 167 SOC_SINGLE("3D Switch", WM8737_3D_ENHANCE, 0, 1, 0), 168 SOC_SINGLE("3D Depth", WM8737_3D_ENHANCE, 1, 15, 0), 169 SOC_ENUM("3D Low Cut-off", low_3d), 170 SOC_ENUM("3D High Cut-off", high_3d), 171 SOC_SINGLE_TLV("3D ADC Volume", WM8737_3D_ENHANCE, 7, 1, 1, adc_tlv), 172 173 SOC_SINGLE("Noise Gate Switch", WM8737_NOISE_GATE, 0, 1, 0), 174 SOC_SINGLE_TLV("Noise Gate Threshold Volume", WM8737_NOISE_GATE, 2, 7, 0, 175 ng_tlv), 176 177 SOC_ENUM("ALC", alc_fn), 178 SOC_SINGLE_TLV("ALC Max Gain Volume", WM8737_ALC1, 4, 7, 0, alc_max_tlv), 179 SOC_SINGLE_TLV("ALC Target Volume", WM8737_ALC1, 0, 15, 0, alc_target_tlv), 180 SOC_ENUM("ALC Hold Time", alc_hold), 181 SOC_SINGLE("ALC ZC Switch", WM8737_ALC2, 4, 1, 0), 182 SOC_ENUM("ALC Attack Time", alc_atk), 183 SOC_ENUM("ALC Decay Time", alc_dcy), 184 }; 185 186 static const char *linsel_text[] = { 187 "LINPUT1", "LINPUT2", "LINPUT3", "LINPUT1 DC", 188 }; 189 190 static SOC_ENUM_SINGLE_DECL(linsel_enum, 191 WM8737_AUDIO_PATH_L, 7, linsel_text); 192 193 static const struct snd_kcontrol_new linsel_mux = 194 SOC_DAPM_ENUM("LINSEL", linsel_enum); 195 196 197 static const char *rinsel_text[] = { 198 "RINPUT1", "RINPUT2", "RINPUT3", "RINPUT1 DC", 199 }; 200 201 static SOC_ENUM_SINGLE_DECL(rinsel_enum, 202 WM8737_AUDIO_PATH_R, 7, rinsel_text); 203 204 static const struct snd_kcontrol_new rinsel_mux = 205 SOC_DAPM_ENUM("RINSEL", rinsel_enum); 206 207 static const char *bypass_text[] = { 208 "Direct", "Preamp" 209 }; 210 211 static SOC_ENUM_SINGLE_DECL(lbypass_enum, 212 WM8737_MIC_PREAMP_CONTROL, 2, bypass_text); 213 214 static const struct snd_kcontrol_new lbypass_mux = 215 SOC_DAPM_ENUM("Left Bypass", lbypass_enum); 216 217 218 static SOC_ENUM_SINGLE_DECL(rbypass_enum, 219 WM8737_MIC_PREAMP_CONTROL, 3, bypass_text); 220 221 static const struct snd_kcontrol_new rbypass_mux = 222 SOC_DAPM_ENUM("Left Bypass", rbypass_enum); 223 224 static const struct snd_soc_dapm_widget wm8737_dapm_widgets[] = { 225 SND_SOC_DAPM_INPUT("LINPUT1"), 226 SND_SOC_DAPM_INPUT("LINPUT2"), 227 SND_SOC_DAPM_INPUT("LINPUT3"), 228 SND_SOC_DAPM_INPUT("RINPUT1"), 229 SND_SOC_DAPM_INPUT("RINPUT2"), 230 SND_SOC_DAPM_INPUT("RINPUT3"), 231 SND_SOC_DAPM_INPUT("LACIN"), 232 SND_SOC_DAPM_INPUT("RACIN"), 233 234 SND_SOC_DAPM_MUX("LINSEL", SND_SOC_NOPM, 0, 0, &linsel_mux), 235 SND_SOC_DAPM_MUX("RINSEL", SND_SOC_NOPM, 0, 0, &rinsel_mux), 236 237 SND_SOC_DAPM_MUX("Left Preamp Mux", SND_SOC_NOPM, 0, 0, &lbypass_mux), 238 SND_SOC_DAPM_MUX("Right Preamp Mux", SND_SOC_NOPM, 0, 0, &rbypass_mux), 239 240 SND_SOC_DAPM_PGA("PGAL", WM8737_POWER_MANAGEMENT, 5, 0, NULL, 0), 241 SND_SOC_DAPM_PGA("PGAR", WM8737_POWER_MANAGEMENT, 4, 0, NULL, 0), 242 243 SND_SOC_DAPM_DAC("ADCL", NULL, WM8737_POWER_MANAGEMENT, 3, 0), 244 SND_SOC_DAPM_DAC("ADCR", NULL, WM8737_POWER_MANAGEMENT, 2, 0), 245 246 SND_SOC_DAPM_AIF_OUT("AIF", "Capture", 0, WM8737_POWER_MANAGEMENT, 6, 0), 247 }; 248 249 static const struct snd_soc_dapm_route intercon[] = { 250 { "LINSEL", "LINPUT1", "LINPUT1" }, 251 { "LINSEL", "LINPUT2", "LINPUT2" }, 252 { "LINSEL", "LINPUT3", "LINPUT3" }, 253 { "LINSEL", "LINPUT1 DC", "LINPUT1" }, 254 255 { "RINSEL", "RINPUT1", "RINPUT1" }, 256 { "RINSEL", "RINPUT2", "RINPUT2" }, 257 { "RINSEL", "RINPUT3", "RINPUT3" }, 258 { "RINSEL", "RINPUT1 DC", "RINPUT1" }, 259 260 { "Left Preamp Mux", "Preamp", "LINSEL" }, 261 { "Left Preamp Mux", "Direct", "LACIN" }, 262 263 { "Right Preamp Mux", "Preamp", "RINSEL" }, 264 { "Right Preamp Mux", "Direct", "RACIN" }, 265 266 { "PGAL", NULL, "Left Preamp Mux" }, 267 { "PGAR", NULL, "Right Preamp Mux" }, 268 269 { "ADCL", NULL, "PGAL" }, 270 { "ADCR", NULL, "PGAR" }, 271 272 { "AIF", NULL, "ADCL" }, 273 { "AIF", NULL, "ADCR" }, 274 }; 275 276 /* codec mclk clock divider coefficients */ 277 static const struct { 278 u32 mclk; 279 u32 rate; 280 u8 usb; 281 u8 sr; 282 } coeff_div[] = { 283 { 12288000, 8000, 0, 0x4 }, 284 { 12288000, 12000, 0, 0x8 }, 285 { 12288000, 16000, 0, 0xa }, 286 { 12288000, 24000, 0, 0x1c }, 287 { 12288000, 32000, 0, 0xc }, 288 { 12288000, 48000, 0, 0 }, 289 { 12288000, 96000, 0, 0xe }, 290 291 { 11289600, 8000, 0, 0x14 }, 292 { 11289600, 11025, 0, 0x18 }, 293 { 11289600, 22050, 0, 0x1a }, 294 { 11289600, 44100, 0, 0x10 }, 295 { 11289600, 88200, 0, 0x1e }, 296 297 { 18432000, 8000, 0, 0x5 }, 298 { 18432000, 12000, 0, 0x9 }, 299 { 18432000, 16000, 0, 0xb }, 300 { 18432000, 24000, 0, 0x1b }, 301 { 18432000, 32000, 0, 0xd }, 302 { 18432000, 48000, 0, 0x1 }, 303 { 18432000, 96000, 0, 0x1f }, 304 305 { 16934400, 8000, 0, 0x15 }, 306 { 16934400, 11025, 0, 0x19 }, 307 { 16934400, 22050, 0, 0x1b }, 308 { 16934400, 44100, 0, 0x11 }, 309 { 16934400, 88200, 0, 0x1f }, 310 311 { 12000000, 8000, 1, 0x4 }, 312 { 12000000, 11025, 1, 0x19 }, 313 { 12000000, 12000, 1, 0x8 }, 314 { 12000000, 16000, 1, 0xa }, 315 { 12000000, 22050, 1, 0x1b }, 316 { 12000000, 24000, 1, 0x1c }, 317 { 12000000, 32000, 1, 0xc }, 318 { 12000000, 44100, 1, 0x11 }, 319 { 12000000, 48000, 1, 0x0 }, 320 { 12000000, 88200, 1, 0x1f }, 321 { 12000000, 96000, 1, 0xe }, 322 }; 323 324 static int wm8737_hw_params(struct snd_pcm_substream *substream, 325 struct snd_pcm_hw_params *params, 326 struct snd_soc_dai *dai) 327 { 328 struct snd_soc_component *component = dai->component; 329 struct wm8737_priv *wm8737 = snd_soc_component_get_drvdata(component); 330 int i; 331 u16 clocking = 0; 332 u16 af = 0; 333 334 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { 335 if (coeff_div[i].rate != params_rate(params)) 336 continue; 337 338 if (coeff_div[i].mclk == wm8737->mclk) 339 break; 340 341 if (coeff_div[i].mclk == wm8737->mclk * 2) { 342 clocking |= WM8737_CLKDIV2; 343 break; 344 } 345 } 346 347 if (i == ARRAY_SIZE(coeff_div)) { 348 dev_err(component->dev, "%dHz MCLK can't support %dHz\n", 349 wm8737->mclk, params_rate(params)); 350 return -EINVAL; 351 } 352 353 clocking |= coeff_div[i].usb | (coeff_div[i].sr << WM8737_SR_SHIFT); 354 355 switch (params_width(params)) { 356 case 16: 357 break; 358 case 20: 359 af |= 0x8; 360 break; 361 case 24: 362 af |= 0x10; 363 break; 364 case 32: 365 af |= 0x18; 366 break; 367 default: 368 return -EINVAL; 369 } 370 371 snd_soc_component_update_bits(component, WM8737_AUDIO_FORMAT, WM8737_WL_MASK, af); 372 snd_soc_component_update_bits(component, WM8737_CLOCKING, 373 WM8737_USB_MODE | WM8737_CLKDIV2 | WM8737_SR_MASK, 374 clocking); 375 376 return 0; 377 } 378 379 static int wm8737_set_dai_sysclk(struct snd_soc_dai *codec_dai, 380 int clk_id, unsigned int freq, int dir) 381 { 382 struct snd_soc_component *component = codec_dai->component; 383 struct wm8737_priv *wm8737 = snd_soc_component_get_drvdata(component); 384 int i; 385 386 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { 387 if (freq == coeff_div[i].mclk || 388 freq == coeff_div[i].mclk * 2) { 389 wm8737->mclk = freq; 390 return 0; 391 } 392 } 393 394 dev_err(component->dev, "MCLK rate %dHz not supported\n", freq); 395 396 return -EINVAL; 397 } 398 399 400 static int wm8737_set_dai_fmt(struct snd_soc_dai *codec_dai, 401 unsigned int fmt) 402 { 403 struct snd_soc_component *component = codec_dai->component; 404 u16 af = 0; 405 406 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 407 case SND_SOC_DAIFMT_CBM_CFM: 408 af |= WM8737_MS; 409 break; 410 case SND_SOC_DAIFMT_CBS_CFS: 411 break; 412 default: 413 return -EINVAL; 414 } 415 416 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 417 case SND_SOC_DAIFMT_I2S: 418 af |= 0x2; 419 break; 420 case SND_SOC_DAIFMT_RIGHT_J: 421 break; 422 case SND_SOC_DAIFMT_LEFT_J: 423 af |= 0x1; 424 break; 425 case SND_SOC_DAIFMT_DSP_A: 426 af |= 0x3; 427 break; 428 case SND_SOC_DAIFMT_DSP_B: 429 af |= 0x13; 430 break; 431 default: 432 return -EINVAL; 433 } 434 435 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 436 case SND_SOC_DAIFMT_NB_NF: 437 break; 438 case SND_SOC_DAIFMT_NB_IF: 439 af |= WM8737_LRP; 440 break; 441 default: 442 return -EINVAL; 443 } 444 445 snd_soc_component_update_bits(component, WM8737_AUDIO_FORMAT, 446 WM8737_FORMAT_MASK | WM8737_LRP | WM8737_MS, af); 447 448 return 0; 449 } 450 451 static int wm8737_set_bias_level(struct snd_soc_component *component, 452 enum snd_soc_bias_level level) 453 { 454 struct wm8737_priv *wm8737 = snd_soc_component_get_drvdata(component); 455 int ret; 456 457 switch (level) { 458 case SND_SOC_BIAS_ON: 459 break; 460 461 case SND_SOC_BIAS_PREPARE: 462 /* VMID at 2*75k */ 463 snd_soc_component_update_bits(component, WM8737_MISC_BIAS_CONTROL, 464 WM8737_VMIDSEL_MASK, 0); 465 break; 466 467 case SND_SOC_BIAS_STANDBY: 468 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { 469 ret = regulator_bulk_enable(ARRAY_SIZE(wm8737->supplies), 470 wm8737->supplies); 471 if (ret != 0) { 472 dev_err(component->dev, 473 "Failed to enable supplies: %d\n", 474 ret); 475 return ret; 476 } 477 478 regcache_sync(wm8737->regmap); 479 480 /* Fast VMID ramp at 2*2.5k */ 481 snd_soc_component_update_bits(component, WM8737_MISC_BIAS_CONTROL, 482 WM8737_VMIDSEL_MASK, 483 2 << WM8737_VMIDSEL_SHIFT); 484 485 /* Bring VMID up */ 486 snd_soc_component_update_bits(component, WM8737_POWER_MANAGEMENT, 487 WM8737_VMID_MASK | 488 WM8737_VREF_MASK, 489 WM8737_VMID_MASK | 490 WM8737_VREF_MASK); 491 492 msleep(500); 493 } 494 495 /* VMID at 2*300k */ 496 snd_soc_component_update_bits(component, WM8737_MISC_BIAS_CONTROL, 497 WM8737_VMIDSEL_MASK, 498 1 << WM8737_VMIDSEL_SHIFT); 499 500 break; 501 502 case SND_SOC_BIAS_OFF: 503 snd_soc_component_update_bits(component, WM8737_POWER_MANAGEMENT, 504 WM8737_VMID_MASK | WM8737_VREF_MASK, 0); 505 506 regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), 507 wm8737->supplies); 508 break; 509 } 510 511 return 0; 512 } 513 514 #define WM8737_RATES SNDRV_PCM_RATE_8000_96000 515 516 #define WM8737_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 517 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 518 519 static const struct snd_soc_dai_ops wm8737_dai_ops = { 520 .hw_params = wm8737_hw_params, 521 .set_sysclk = wm8737_set_dai_sysclk, 522 .set_fmt = wm8737_set_dai_fmt, 523 }; 524 525 static struct snd_soc_dai_driver wm8737_dai = { 526 .name = "wm8737", 527 .capture = { 528 .stream_name = "Capture", 529 .channels_min = 2, /* Mono modes not yet supported */ 530 .channels_max = 2, 531 .rates = WM8737_RATES, 532 .formats = WM8737_FORMATS, 533 }, 534 .ops = &wm8737_dai_ops, 535 }; 536 537 static int wm8737_probe(struct snd_soc_component *component) 538 { 539 struct wm8737_priv *wm8737 = snd_soc_component_get_drvdata(component); 540 int ret; 541 542 ret = regulator_bulk_enable(ARRAY_SIZE(wm8737->supplies), 543 wm8737->supplies); 544 if (ret != 0) { 545 dev_err(component->dev, "Failed to enable supplies: %d\n", ret); 546 goto err_get; 547 } 548 549 ret = wm8737_reset(component); 550 if (ret < 0) { 551 dev_err(component->dev, "Failed to issue reset\n"); 552 goto err_enable; 553 } 554 555 snd_soc_component_update_bits(component, WM8737_LEFT_PGA_VOLUME, WM8737_LVU, 556 WM8737_LVU); 557 snd_soc_component_update_bits(component, WM8737_RIGHT_PGA_VOLUME, WM8737_RVU, 558 WM8737_RVU); 559 560 snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY); 561 562 /* Bias level configuration will have done an extra enable */ 563 regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), wm8737->supplies); 564 565 return 0; 566 567 err_enable: 568 regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), wm8737->supplies); 569 err_get: 570 return ret; 571 } 572 573 static const struct snd_soc_component_driver soc_component_dev_wm8737 = { 574 .probe = wm8737_probe, 575 .set_bias_level = wm8737_set_bias_level, 576 .controls = wm8737_snd_controls, 577 .num_controls = ARRAY_SIZE(wm8737_snd_controls), 578 .dapm_widgets = wm8737_dapm_widgets, 579 .num_dapm_widgets = ARRAY_SIZE(wm8737_dapm_widgets), 580 .dapm_routes = intercon, 581 .num_dapm_routes = ARRAY_SIZE(intercon), 582 .suspend_bias_off = 1, 583 .idle_bias_on = 1, 584 .use_pmdown_time = 1, 585 .endianness = 1, 586 }; 587 588 static const struct of_device_id wm8737_of_match[] = { 589 { .compatible = "wlf,wm8737", }, 590 { } 591 }; 592 593 MODULE_DEVICE_TABLE(of, wm8737_of_match); 594 595 static const struct regmap_config wm8737_regmap = { 596 .reg_bits = 7, 597 .val_bits = 9, 598 .max_register = WM8737_MAX_REGISTER, 599 600 .reg_defaults = wm8737_reg_defaults, 601 .num_reg_defaults = ARRAY_SIZE(wm8737_reg_defaults), 602 .cache_type = REGCACHE_RBTREE, 603 604 .volatile_reg = wm8737_volatile, 605 }; 606 607 #if IS_ENABLED(CONFIG_I2C) 608 static int wm8737_i2c_probe(struct i2c_client *i2c) 609 { 610 struct wm8737_priv *wm8737; 611 int ret, i; 612 613 wm8737 = devm_kzalloc(&i2c->dev, sizeof(struct wm8737_priv), 614 GFP_KERNEL); 615 if (wm8737 == NULL) 616 return -ENOMEM; 617 618 for (i = 0; i < ARRAY_SIZE(wm8737->supplies); i++) 619 wm8737->supplies[i].supply = wm8737_supply_names[i]; 620 621 ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8737->supplies), 622 wm8737->supplies); 623 if (ret != 0) { 624 dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret); 625 return ret; 626 } 627 628 wm8737->regmap = devm_regmap_init_i2c(i2c, &wm8737_regmap); 629 if (IS_ERR(wm8737->regmap)) 630 return PTR_ERR(wm8737->regmap); 631 632 i2c_set_clientdata(i2c, wm8737); 633 634 ret = devm_snd_soc_register_component(&i2c->dev, 635 &soc_component_dev_wm8737, &wm8737_dai, 1); 636 637 return ret; 638 639 } 640 641 static const struct i2c_device_id wm8737_i2c_id[] = { 642 { "wm8737", 0 }, 643 { } 644 }; 645 MODULE_DEVICE_TABLE(i2c, wm8737_i2c_id); 646 647 static struct i2c_driver wm8737_i2c_driver = { 648 .driver = { 649 .name = "wm8737", 650 .of_match_table = wm8737_of_match, 651 }, 652 .probe_new = wm8737_i2c_probe, 653 .id_table = wm8737_i2c_id, 654 }; 655 #endif 656 657 #if defined(CONFIG_SPI_MASTER) 658 static int wm8737_spi_probe(struct spi_device *spi) 659 { 660 struct wm8737_priv *wm8737; 661 int ret, i; 662 663 wm8737 = devm_kzalloc(&spi->dev, sizeof(struct wm8737_priv), 664 GFP_KERNEL); 665 if (wm8737 == NULL) 666 return -ENOMEM; 667 668 for (i = 0; i < ARRAY_SIZE(wm8737->supplies); i++) 669 wm8737->supplies[i].supply = wm8737_supply_names[i]; 670 671 ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8737->supplies), 672 wm8737->supplies); 673 if (ret != 0) { 674 dev_err(&spi->dev, "Failed to request supplies: %d\n", ret); 675 return ret; 676 } 677 678 wm8737->regmap = devm_regmap_init_spi(spi, &wm8737_regmap); 679 if (IS_ERR(wm8737->regmap)) 680 return PTR_ERR(wm8737->regmap); 681 682 spi_set_drvdata(spi, wm8737); 683 684 ret = devm_snd_soc_register_component(&spi->dev, 685 &soc_component_dev_wm8737, &wm8737_dai, 1); 686 687 return ret; 688 } 689 690 static struct spi_driver wm8737_spi_driver = { 691 .driver = { 692 .name = "wm8737", 693 .of_match_table = wm8737_of_match, 694 }, 695 .probe = wm8737_spi_probe, 696 }; 697 #endif /* CONFIG_SPI_MASTER */ 698 699 static int __init wm8737_modinit(void) 700 { 701 int ret; 702 #if IS_ENABLED(CONFIG_I2C) 703 ret = i2c_add_driver(&wm8737_i2c_driver); 704 if (ret != 0) { 705 printk(KERN_ERR "Failed to register WM8737 I2C driver: %d\n", 706 ret); 707 } 708 #endif 709 #if defined(CONFIG_SPI_MASTER) 710 ret = spi_register_driver(&wm8737_spi_driver); 711 if (ret != 0) { 712 printk(KERN_ERR "Failed to register WM8737 SPI driver: %d\n", 713 ret); 714 } 715 #endif 716 return 0; 717 } 718 module_init(wm8737_modinit); 719 720 static void __exit wm8737_exit(void) 721 { 722 #if defined(CONFIG_SPI_MASTER) 723 spi_unregister_driver(&wm8737_spi_driver); 724 #endif 725 #if IS_ENABLED(CONFIG_I2C) 726 i2c_del_driver(&wm8737_i2c_driver); 727 #endif 728 } 729 module_exit(wm8737_exit); 730 731 MODULE_DESCRIPTION("ASoC WM8737 driver"); 732 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); 733 MODULE_LICENSE("GPL"); 734