1 /* 2 * wm8510.c -- WM8510 ALSA Soc Audio driver 3 * 4 * Copyright 2006 Wolfson Microelectronics PLC. 5 * 6 * Author: Liam Girdwood <lrg@slimlogic.co.uk> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #include <linux/module.h> 14 #include <linux/moduleparam.h> 15 #include <linux/kernel.h> 16 #include <linux/init.h> 17 #include <linux/delay.h> 18 #include <linux/pm.h> 19 #include <linux/i2c.h> 20 #include <linux/spi/spi.h> 21 #include <linux/slab.h> 22 #include <linux/of_device.h> 23 #include <linux/regmap.h> 24 #include <sound/core.h> 25 #include <sound/pcm.h> 26 #include <sound/pcm_params.h> 27 #include <sound/soc.h> 28 #include <sound/initval.h> 29 30 #include "wm8510.h" 31 32 /* 33 * wm8510 register cache 34 * We can't read the WM8510 register space when we are 35 * using 2 wire for device control, so we cache them instead. 36 */ 37 static const struct reg_default wm8510_reg_defaults[] = { 38 { 1, 0x0000 }, 39 { 2, 0x0000 }, 40 { 3, 0x0000 }, 41 { 4, 0x0050 }, 42 { 5, 0x0000 }, 43 { 6, 0x0140 }, 44 { 7, 0x0000 }, 45 { 8, 0x0000 }, 46 { 9, 0x0000 }, 47 { 10, 0x0000 }, 48 { 11, 0x00ff }, 49 { 12, 0x0000 }, 50 { 13, 0x0000 }, 51 { 14, 0x0100 }, 52 { 15, 0x00ff }, 53 { 16, 0x0000 }, 54 { 17, 0x0000 }, 55 { 18, 0x012c }, 56 { 19, 0x002c }, 57 { 20, 0x002c }, 58 { 21, 0x002c }, 59 { 22, 0x002c }, 60 { 23, 0x0000 }, 61 { 24, 0x0032 }, 62 { 25, 0x0000 }, 63 { 26, 0x0000 }, 64 { 27, 0x0000 }, 65 { 28, 0x0000 }, 66 { 29, 0x0000 }, 67 { 30, 0x0000 }, 68 { 31, 0x0000 }, 69 { 32, 0x0038 }, 70 { 33, 0x000b }, 71 { 34, 0x0032 }, 72 { 35, 0x0000 }, 73 { 36, 0x0008 }, 74 { 37, 0x000c }, 75 { 38, 0x0093 }, 76 { 39, 0x00e9 }, 77 { 40, 0x0000 }, 78 { 41, 0x0000 }, 79 { 42, 0x0000 }, 80 { 43, 0x0000 }, 81 { 44, 0x0003 }, 82 { 45, 0x0010 }, 83 { 46, 0x0000 }, 84 { 47, 0x0000 }, 85 { 48, 0x0000 }, 86 { 49, 0x0002 }, 87 { 50, 0x0001 }, 88 { 51, 0x0000 }, 89 { 52, 0x0000 }, 90 { 53, 0x0000 }, 91 { 54, 0x0039 }, 92 { 55, 0x0000 }, 93 { 56, 0x0001 }, 94 }; 95 96 static bool wm8510_volatile(struct device *dev, unsigned int reg) 97 { 98 switch (reg) { 99 case WM8510_RESET: 100 return true; 101 default: 102 return false; 103 } 104 } 105 106 #define WM8510_POWER1_BIASEN 0x08 107 #define WM8510_POWER1_BUFIOEN 0x10 108 109 #define wm8510_reset(c) snd_soc_write(c, WM8510_RESET, 0) 110 111 /* codec private data */ 112 struct wm8510_priv { 113 struct regmap *regmap; 114 }; 115 116 static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" }; 117 static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; 118 static const char *wm8510_alc[] = { "ALC", "Limiter" }; 119 120 static const struct soc_enum wm8510_enum[] = { 121 SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */ 122 SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */ 123 SOC_ENUM_SINGLE(WM8510_DAC, 4, 4, wm8510_deemp), 124 SOC_ENUM_SINGLE(WM8510_ALC3, 8, 2, wm8510_alc), 125 }; 126 127 static const struct snd_kcontrol_new wm8510_snd_controls[] = { 128 129 SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0), 130 131 SOC_ENUM("DAC Companding", wm8510_enum[1]), 132 SOC_ENUM("ADC Companding", wm8510_enum[0]), 133 134 SOC_ENUM("Playback De-emphasis", wm8510_enum[2]), 135 SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0), 136 137 SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0), 138 139 SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0), 140 SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0), 141 SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0), 142 143 SOC_SINGLE("Capture Volume", WM8510_ADCVOL, 0, 127, 0), 144 145 SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1, 8, 1, 0), 146 SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1, 4, 15, 0), 147 SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1, 0, 15, 0), 148 149 SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2, 4, 7, 0), 150 SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2, 0, 15, 0), 151 152 SOC_SINGLE("ALC Enable Switch", WM8510_ALC1, 8, 1, 0), 153 SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1, 3, 7, 0), 154 SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1, 0, 7, 0), 155 156 SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2, 8, 1, 0), 157 SOC_SINGLE("ALC Capture Hold", WM8510_ALC2, 4, 7, 0), 158 SOC_SINGLE("ALC Capture Target", WM8510_ALC2, 0, 15, 0), 159 160 SOC_ENUM("ALC Capture Mode", wm8510_enum[3]), 161 SOC_SINGLE("ALC Capture Decay", WM8510_ALC3, 4, 15, 0), 162 SOC_SINGLE("ALC Capture Attack", WM8510_ALC3, 0, 15, 0), 163 164 SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE, 3, 1, 0), 165 SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE, 0, 7, 0), 166 167 SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA, 7, 1, 0), 168 SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA, 0, 63, 0), 169 170 SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL, 7, 1, 0), 171 SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL, 6, 1, 1), 172 SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL, 0, 63, 0), 173 SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0), 174 175 SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST, 8, 1, 0), 176 SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1), 177 }; 178 179 /* Speaker Output Mixer */ 180 static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = { 181 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0), 182 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0), 183 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0), 184 }; 185 186 /* Mono Output Mixer */ 187 static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = { 188 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0), 189 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0), 190 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0), 191 }; 192 193 static const struct snd_kcontrol_new wm8510_boost_controls[] = { 194 SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA, 6, 1, 1), 195 SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0), 196 SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0), 197 }; 198 199 static const struct snd_kcontrol_new wm8510_micpga_controls[] = { 200 SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0), 201 SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0), 202 SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0), 203 }; 204 205 static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = { 206 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0, 207 &wm8510_speaker_mixer_controls[0], 208 ARRAY_SIZE(wm8510_speaker_mixer_controls)), 209 SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0, 210 &wm8510_mono_mixer_controls[0], 211 ARRAY_SIZE(wm8510_mono_mixer_controls)), 212 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0), 213 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0), 214 SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0), 215 SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0), 216 SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0), 217 SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0), 218 219 SND_SOC_DAPM_MIXER("Mic PGA", WM8510_POWER2, 2, 0, 220 &wm8510_micpga_controls[0], 221 ARRAY_SIZE(wm8510_micpga_controls)), 222 SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0, 223 &wm8510_boost_controls[0], 224 ARRAY_SIZE(wm8510_boost_controls)), 225 226 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0), 227 228 SND_SOC_DAPM_INPUT("MICN"), 229 SND_SOC_DAPM_INPUT("MICP"), 230 SND_SOC_DAPM_INPUT("AUX"), 231 SND_SOC_DAPM_OUTPUT("MONOOUT"), 232 SND_SOC_DAPM_OUTPUT("SPKOUTP"), 233 SND_SOC_DAPM_OUTPUT("SPKOUTN"), 234 }; 235 236 static const struct snd_soc_dapm_route wm8510_dapm_routes[] = { 237 /* Mono output mixer */ 238 {"Mono Mixer", "PCM Playback Switch", "DAC"}, 239 {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, 240 {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, 241 242 /* Speaker output mixer */ 243 {"Speaker Mixer", "PCM Playback Switch", "DAC"}, 244 {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, 245 {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, 246 247 /* Outputs */ 248 {"Mono Out", NULL, "Mono Mixer"}, 249 {"MONOOUT", NULL, "Mono Out"}, 250 {"SpkN Out", NULL, "Speaker Mixer"}, 251 {"SpkP Out", NULL, "Speaker Mixer"}, 252 {"SPKOUTN", NULL, "SpkN Out"}, 253 {"SPKOUTP", NULL, "SpkP Out"}, 254 255 /* Microphone PGA */ 256 {"Mic PGA", "MICN Switch", "MICN"}, 257 {"Mic PGA", "MICP Switch", "MICP"}, 258 { "Mic PGA", "AUX Switch", "Aux Input" }, 259 260 /* Boost Mixer */ 261 {"Boost Mixer", "Mic PGA Switch", "Mic PGA"}, 262 {"Boost Mixer", "Mic Volume", "MICP"}, 263 {"Boost Mixer", "Aux Volume", "Aux Input"}, 264 265 {"ADC", NULL, "Boost Mixer"}, 266 }; 267 268 struct pll_ { 269 unsigned int pre_div:4; /* prescale - 1 */ 270 unsigned int n:4; 271 unsigned int k; 272 }; 273 274 static struct pll_ pll_div; 275 276 /* The size in bits of the pll divide multiplied by 10 277 * to allow rounding later */ 278 #define FIXED_PLL_SIZE ((1 << 24) * 10) 279 280 static void pll_factors(unsigned int target, unsigned int source) 281 { 282 unsigned long long Kpart; 283 unsigned int K, Ndiv, Nmod; 284 285 Ndiv = target / source; 286 if (Ndiv < 6) { 287 source >>= 1; 288 pll_div.pre_div = 1; 289 Ndiv = target / source; 290 } else 291 pll_div.pre_div = 0; 292 293 if ((Ndiv < 6) || (Ndiv > 12)) 294 printk(KERN_WARNING 295 "WM8510 N value %u outwith recommended range!d\n", 296 Ndiv); 297 298 pll_div.n = Ndiv; 299 Nmod = target % source; 300 Kpart = FIXED_PLL_SIZE * (long long)Nmod; 301 302 do_div(Kpart, source); 303 304 K = Kpart & 0xFFFFFFFF; 305 306 /* Check if we need to round */ 307 if ((K % 10) >= 5) 308 K += 5; 309 310 /* Move down to proper range now rounding is done */ 311 K /= 10; 312 313 pll_div.k = K; 314 } 315 316 static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, 317 int source, unsigned int freq_in, unsigned int freq_out) 318 { 319 struct snd_soc_codec *codec = codec_dai->codec; 320 u16 reg; 321 322 if (freq_in == 0 || freq_out == 0) { 323 /* Clock CODEC directly from MCLK */ 324 reg = snd_soc_read(codec, WM8510_CLOCK); 325 snd_soc_write(codec, WM8510_CLOCK, reg & 0x0ff); 326 327 /* Turn off PLL */ 328 reg = snd_soc_read(codec, WM8510_POWER1); 329 snd_soc_write(codec, WM8510_POWER1, reg & 0x1df); 330 return 0; 331 } 332 333 pll_factors(freq_out*4, freq_in); 334 335 snd_soc_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n); 336 snd_soc_write(codec, WM8510_PLLK1, pll_div.k >> 18); 337 snd_soc_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff); 338 snd_soc_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff); 339 reg = snd_soc_read(codec, WM8510_POWER1); 340 snd_soc_write(codec, WM8510_POWER1, reg | 0x020); 341 342 /* Run CODEC from PLL instead of MCLK */ 343 reg = snd_soc_read(codec, WM8510_CLOCK); 344 snd_soc_write(codec, WM8510_CLOCK, reg | 0x100); 345 346 return 0; 347 } 348 349 /* 350 * Configure WM8510 clock dividers. 351 */ 352 static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 353 int div_id, int div) 354 { 355 struct snd_soc_codec *codec = codec_dai->codec; 356 u16 reg; 357 358 switch (div_id) { 359 case WM8510_OPCLKDIV: 360 reg = snd_soc_read(codec, WM8510_GPIO) & 0x1cf; 361 snd_soc_write(codec, WM8510_GPIO, reg | div); 362 break; 363 case WM8510_MCLKDIV: 364 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x11f; 365 snd_soc_write(codec, WM8510_CLOCK, reg | div); 366 break; 367 case WM8510_ADCCLK: 368 reg = snd_soc_read(codec, WM8510_ADC) & 0x1f7; 369 snd_soc_write(codec, WM8510_ADC, reg | div); 370 break; 371 case WM8510_DACCLK: 372 reg = snd_soc_read(codec, WM8510_DAC) & 0x1f7; 373 snd_soc_write(codec, WM8510_DAC, reg | div); 374 break; 375 case WM8510_BCLKDIV: 376 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x1e3; 377 snd_soc_write(codec, WM8510_CLOCK, reg | div); 378 break; 379 default: 380 return -EINVAL; 381 } 382 383 return 0; 384 } 385 386 static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai, 387 unsigned int fmt) 388 { 389 struct snd_soc_codec *codec = codec_dai->codec; 390 u16 iface = 0; 391 u16 clk = snd_soc_read(codec, WM8510_CLOCK) & 0x1fe; 392 393 /* set master/slave audio interface */ 394 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 395 case SND_SOC_DAIFMT_CBM_CFM: 396 clk |= 0x0001; 397 break; 398 case SND_SOC_DAIFMT_CBS_CFS: 399 break; 400 default: 401 return -EINVAL; 402 } 403 404 /* interface format */ 405 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 406 case SND_SOC_DAIFMT_I2S: 407 iface |= 0x0010; 408 break; 409 case SND_SOC_DAIFMT_RIGHT_J: 410 break; 411 case SND_SOC_DAIFMT_LEFT_J: 412 iface |= 0x0008; 413 break; 414 case SND_SOC_DAIFMT_DSP_A: 415 iface |= 0x00018; 416 break; 417 default: 418 return -EINVAL; 419 } 420 421 /* clock inversion */ 422 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 423 case SND_SOC_DAIFMT_NB_NF: 424 break; 425 case SND_SOC_DAIFMT_IB_IF: 426 iface |= 0x0180; 427 break; 428 case SND_SOC_DAIFMT_IB_NF: 429 iface |= 0x0100; 430 break; 431 case SND_SOC_DAIFMT_NB_IF: 432 iface |= 0x0080; 433 break; 434 default: 435 return -EINVAL; 436 } 437 438 snd_soc_write(codec, WM8510_IFACE, iface); 439 snd_soc_write(codec, WM8510_CLOCK, clk); 440 return 0; 441 } 442 443 static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream, 444 struct snd_pcm_hw_params *params, 445 struct snd_soc_dai *dai) 446 { 447 struct snd_soc_codec *codec = dai->codec; 448 u16 iface = snd_soc_read(codec, WM8510_IFACE) & 0x19f; 449 u16 adn = snd_soc_read(codec, WM8510_ADD) & 0x1f1; 450 451 /* bit size */ 452 switch (params_width(params)) { 453 case 16: 454 break; 455 case 20: 456 iface |= 0x0020; 457 break; 458 case 24: 459 iface |= 0x0040; 460 break; 461 case 32: 462 iface |= 0x0060; 463 break; 464 } 465 466 /* filter coefficient */ 467 switch (params_rate(params)) { 468 case 8000: 469 adn |= 0x5 << 1; 470 break; 471 case 11025: 472 adn |= 0x4 << 1; 473 break; 474 case 16000: 475 adn |= 0x3 << 1; 476 break; 477 case 22050: 478 adn |= 0x2 << 1; 479 break; 480 case 32000: 481 adn |= 0x1 << 1; 482 break; 483 case 44100: 484 case 48000: 485 break; 486 } 487 488 snd_soc_write(codec, WM8510_IFACE, iface); 489 snd_soc_write(codec, WM8510_ADD, adn); 490 return 0; 491 } 492 493 static int wm8510_mute(struct snd_soc_dai *dai, int mute) 494 { 495 struct snd_soc_codec *codec = dai->codec; 496 u16 mute_reg = snd_soc_read(codec, WM8510_DAC) & 0xffbf; 497 498 if (mute) 499 snd_soc_write(codec, WM8510_DAC, mute_reg | 0x40); 500 else 501 snd_soc_write(codec, WM8510_DAC, mute_reg); 502 return 0; 503 } 504 505 /* liam need to make this lower power with dapm */ 506 static int wm8510_set_bias_level(struct snd_soc_codec *codec, 507 enum snd_soc_bias_level level) 508 { 509 struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec); 510 u16 power1 = snd_soc_read(codec, WM8510_POWER1) & ~0x3; 511 512 switch (level) { 513 case SND_SOC_BIAS_ON: 514 case SND_SOC_BIAS_PREPARE: 515 power1 |= 0x1; /* VMID 50k */ 516 snd_soc_write(codec, WM8510_POWER1, power1); 517 break; 518 519 case SND_SOC_BIAS_STANDBY: 520 power1 |= WM8510_POWER1_BIASEN | WM8510_POWER1_BUFIOEN; 521 522 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { 523 regcache_sync(wm8510->regmap); 524 525 /* Initial cap charge at VMID 5k */ 526 snd_soc_write(codec, WM8510_POWER1, power1 | 0x3); 527 mdelay(100); 528 } 529 530 power1 |= 0x2; /* VMID 500k */ 531 snd_soc_write(codec, WM8510_POWER1, power1); 532 break; 533 534 case SND_SOC_BIAS_OFF: 535 snd_soc_write(codec, WM8510_POWER1, 0); 536 snd_soc_write(codec, WM8510_POWER2, 0); 537 snd_soc_write(codec, WM8510_POWER3, 0); 538 break; 539 } 540 541 codec->dapm.bias_level = level; 542 return 0; 543 } 544 545 #define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 546 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ 547 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) 548 549 #define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 550 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 551 552 static const struct snd_soc_dai_ops wm8510_dai_ops = { 553 .hw_params = wm8510_pcm_hw_params, 554 .digital_mute = wm8510_mute, 555 .set_fmt = wm8510_set_dai_fmt, 556 .set_clkdiv = wm8510_set_dai_clkdiv, 557 .set_pll = wm8510_set_dai_pll, 558 }; 559 560 static struct snd_soc_dai_driver wm8510_dai = { 561 .name = "wm8510-hifi", 562 .playback = { 563 .stream_name = "Playback", 564 .channels_min = 2, 565 .channels_max = 2, 566 .rates = WM8510_RATES, 567 .formats = WM8510_FORMATS,}, 568 .capture = { 569 .stream_name = "Capture", 570 .channels_min = 2, 571 .channels_max = 2, 572 .rates = WM8510_RATES, 573 .formats = WM8510_FORMATS,}, 574 .ops = &wm8510_dai_ops, 575 .symmetric_rates = 1, 576 }; 577 578 static int wm8510_suspend(struct snd_soc_codec *codec) 579 { 580 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 581 return 0; 582 } 583 584 static int wm8510_resume(struct snd_soc_codec *codec) 585 { 586 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 587 return 0; 588 } 589 590 static int wm8510_probe(struct snd_soc_codec *codec) 591 { 592 wm8510_reset(codec); 593 594 /* power on device */ 595 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 596 597 return 0; 598 } 599 600 /* power down chip */ 601 static int wm8510_remove(struct snd_soc_codec *codec) 602 { 603 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 604 return 0; 605 } 606 607 static struct snd_soc_codec_driver soc_codec_dev_wm8510 = { 608 .probe = wm8510_probe, 609 .remove = wm8510_remove, 610 .suspend = wm8510_suspend, 611 .resume = wm8510_resume, 612 .set_bias_level = wm8510_set_bias_level, 613 614 .controls = wm8510_snd_controls, 615 .num_controls = ARRAY_SIZE(wm8510_snd_controls), 616 .dapm_widgets = wm8510_dapm_widgets, 617 .num_dapm_widgets = ARRAY_SIZE(wm8510_dapm_widgets), 618 .dapm_routes = wm8510_dapm_routes, 619 .num_dapm_routes = ARRAY_SIZE(wm8510_dapm_routes), 620 }; 621 622 static const struct of_device_id wm8510_of_match[] = { 623 { .compatible = "wlf,wm8510" }, 624 { }, 625 }; 626 627 static const struct regmap_config wm8510_regmap = { 628 .reg_bits = 7, 629 .val_bits = 9, 630 .max_register = WM8510_MONOMIX, 631 632 .reg_defaults = wm8510_reg_defaults, 633 .num_reg_defaults = ARRAY_SIZE(wm8510_reg_defaults), 634 .cache_type = REGCACHE_RBTREE, 635 636 .volatile_reg = wm8510_volatile, 637 }; 638 639 #if defined(CONFIG_SPI_MASTER) 640 static int wm8510_spi_probe(struct spi_device *spi) 641 { 642 struct wm8510_priv *wm8510; 643 int ret; 644 645 wm8510 = devm_kzalloc(&spi->dev, sizeof(struct wm8510_priv), 646 GFP_KERNEL); 647 if (wm8510 == NULL) 648 return -ENOMEM; 649 650 wm8510->regmap = devm_regmap_init_spi(spi, &wm8510_regmap); 651 if (IS_ERR(wm8510->regmap)) 652 return PTR_ERR(wm8510->regmap); 653 654 spi_set_drvdata(spi, wm8510); 655 656 ret = snd_soc_register_codec(&spi->dev, 657 &soc_codec_dev_wm8510, &wm8510_dai, 1); 658 659 return ret; 660 } 661 662 static int wm8510_spi_remove(struct spi_device *spi) 663 { 664 snd_soc_unregister_codec(&spi->dev); 665 return 0; 666 } 667 668 static struct spi_driver wm8510_spi_driver = { 669 .driver = { 670 .name = "wm8510", 671 .owner = THIS_MODULE, 672 .of_match_table = wm8510_of_match, 673 }, 674 .probe = wm8510_spi_probe, 675 .remove = wm8510_spi_remove, 676 }; 677 #endif /* CONFIG_SPI_MASTER */ 678 679 #if IS_ENABLED(CONFIG_I2C) 680 static int wm8510_i2c_probe(struct i2c_client *i2c, 681 const struct i2c_device_id *id) 682 { 683 struct wm8510_priv *wm8510; 684 int ret; 685 686 wm8510 = devm_kzalloc(&i2c->dev, sizeof(struct wm8510_priv), 687 GFP_KERNEL); 688 if (wm8510 == NULL) 689 return -ENOMEM; 690 691 wm8510->regmap = devm_regmap_init_i2c(i2c, &wm8510_regmap); 692 if (IS_ERR(wm8510->regmap)) 693 return PTR_ERR(wm8510->regmap); 694 695 i2c_set_clientdata(i2c, wm8510); 696 697 ret = snd_soc_register_codec(&i2c->dev, 698 &soc_codec_dev_wm8510, &wm8510_dai, 1); 699 700 return ret; 701 } 702 703 static int wm8510_i2c_remove(struct i2c_client *client) 704 { 705 snd_soc_unregister_codec(&client->dev); 706 return 0; 707 } 708 709 static const struct i2c_device_id wm8510_i2c_id[] = { 710 { "wm8510", 0 }, 711 { } 712 }; 713 MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id); 714 715 static struct i2c_driver wm8510_i2c_driver = { 716 .driver = { 717 .name = "wm8510", 718 .owner = THIS_MODULE, 719 .of_match_table = wm8510_of_match, 720 }, 721 .probe = wm8510_i2c_probe, 722 .remove = wm8510_i2c_remove, 723 .id_table = wm8510_i2c_id, 724 }; 725 #endif 726 727 static int __init wm8510_modinit(void) 728 { 729 int ret = 0; 730 #if IS_ENABLED(CONFIG_I2C) 731 ret = i2c_add_driver(&wm8510_i2c_driver); 732 if (ret != 0) { 733 printk(KERN_ERR "Failed to register WM8510 I2C driver: %d\n", 734 ret); 735 } 736 #endif 737 #if defined(CONFIG_SPI_MASTER) 738 ret = spi_register_driver(&wm8510_spi_driver); 739 if (ret != 0) { 740 printk(KERN_ERR "Failed to register WM8510 SPI driver: %d\n", 741 ret); 742 } 743 #endif 744 return ret; 745 } 746 module_init(wm8510_modinit); 747 748 static void __exit wm8510_exit(void) 749 { 750 #if IS_ENABLED(CONFIG_I2C) 751 i2c_del_driver(&wm8510_i2c_driver); 752 #endif 753 #if defined(CONFIG_SPI_MASTER) 754 spi_unregister_driver(&wm8510_spi_driver); 755 #endif 756 } 757 module_exit(wm8510_exit); 758 759 MODULE_DESCRIPTION("ASoC WM8510 driver"); 760 MODULE_AUTHOR("Liam Girdwood"); 761 MODULE_LICENSE("GPL"); 762