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 <sound/core.h> 24 #include <sound/pcm.h> 25 #include <sound/pcm_params.h> 26 #include <sound/soc.h> 27 #include <sound/initval.h> 28 29 #include "wm8510.h" 30 31 /* 32 * wm8510 register cache 33 * We can't read the WM8510 register space when we are 34 * using 2 wire for device control, so we cache them instead. 35 */ 36 static const u16 wm8510_reg[WM8510_CACHEREGNUM] = { 37 0x0000, 0x0000, 0x0000, 0x0000, 38 0x0050, 0x0000, 0x0140, 0x0000, 39 0x0000, 0x0000, 0x0000, 0x00ff, 40 0x0000, 0x0000, 0x0100, 0x00ff, 41 0x0000, 0x0000, 0x012c, 0x002c, 42 0x002c, 0x002c, 0x002c, 0x0000, 43 0x0032, 0x0000, 0x0000, 0x0000, 44 0x0000, 0x0000, 0x0000, 0x0000, 45 0x0038, 0x000b, 0x0032, 0x0000, 46 0x0008, 0x000c, 0x0093, 0x00e9, 47 0x0000, 0x0000, 0x0000, 0x0000, 48 0x0003, 0x0010, 0x0000, 0x0000, 49 0x0000, 0x0002, 0x0001, 0x0000, 50 0x0000, 0x0000, 0x0039, 0x0000, 51 0x0001, 52 }; 53 54 #define WM8510_POWER1_BIASEN 0x08 55 #define WM8510_POWER1_BUFIOEN 0x10 56 57 #define wm8510_reset(c) snd_soc_write(c, WM8510_RESET, 0) 58 59 /* codec private data */ 60 struct wm8510_priv { 61 enum snd_soc_control_type control_type; 62 }; 63 64 static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" }; 65 static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; 66 static const char *wm8510_alc[] = { "ALC", "Limiter" }; 67 68 static const struct soc_enum wm8510_enum[] = { 69 SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */ 70 SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */ 71 SOC_ENUM_SINGLE(WM8510_DAC, 4, 4, wm8510_deemp), 72 SOC_ENUM_SINGLE(WM8510_ALC3, 8, 2, wm8510_alc), 73 }; 74 75 static const struct snd_kcontrol_new wm8510_snd_controls[] = { 76 77 SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0), 78 79 SOC_ENUM("DAC Companding", wm8510_enum[1]), 80 SOC_ENUM("ADC Companding", wm8510_enum[0]), 81 82 SOC_ENUM("Playback De-emphasis", wm8510_enum[2]), 83 SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0), 84 85 SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0), 86 87 SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0), 88 SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0), 89 SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0), 90 91 SOC_SINGLE("Capture Volume", WM8510_ADCVOL, 0, 127, 0), 92 93 SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1, 8, 1, 0), 94 SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1, 4, 15, 0), 95 SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1, 0, 15, 0), 96 97 SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2, 4, 7, 0), 98 SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2, 0, 15, 0), 99 100 SOC_SINGLE("ALC Enable Switch", WM8510_ALC1, 8, 1, 0), 101 SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1, 3, 7, 0), 102 SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1, 0, 7, 0), 103 104 SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2, 8, 1, 0), 105 SOC_SINGLE("ALC Capture Hold", WM8510_ALC2, 4, 7, 0), 106 SOC_SINGLE("ALC Capture Target", WM8510_ALC2, 0, 15, 0), 107 108 SOC_ENUM("ALC Capture Mode", wm8510_enum[3]), 109 SOC_SINGLE("ALC Capture Decay", WM8510_ALC3, 4, 15, 0), 110 SOC_SINGLE("ALC Capture Attack", WM8510_ALC3, 0, 15, 0), 111 112 SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE, 3, 1, 0), 113 SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE, 0, 7, 0), 114 115 SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA, 7, 1, 0), 116 SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA, 0, 63, 0), 117 118 SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL, 7, 1, 0), 119 SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL, 6, 1, 1), 120 SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL, 0, 63, 0), 121 SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0), 122 123 SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST, 8, 1, 0), 124 SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1), 125 }; 126 127 /* Speaker Output Mixer */ 128 static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = { 129 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0), 130 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0), 131 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0), 132 }; 133 134 /* Mono Output Mixer */ 135 static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = { 136 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0), 137 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0), 138 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0), 139 }; 140 141 static const struct snd_kcontrol_new wm8510_boost_controls[] = { 142 SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA, 6, 1, 1), 143 SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0), 144 SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0), 145 }; 146 147 static const struct snd_kcontrol_new wm8510_micpga_controls[] = { 148 SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0), 149 SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0), 150 SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0), 151 }; 152 153 static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = { 154 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0, 155 &wm8510_speaker_mixer_controls[0], 156 ARRAY_SIZE(wm8510_speaker_mixer_controls)), 157 SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0, 158 &wm8510_mono_mixer_controls[0], 159 ARRAY_SIZE(wm8510_mono_mixer_controls)), 160 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0), 161 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0), 162 SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0), 163 SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0), 164 SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0), 165 SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0), 166 167 SND_SOC_DAPM_MIXER("Mic PGA", WM8510_POWER2, 2, 0, 168 &wm8510_micpga_controls[0], 169 ARRAY_SIZE(wm8510_micpga_controls)), 170 SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0, 171 &wm8510_boost_controls[0], 172 ARRAY_SIZE(wm8510_boost_controls)), 173 174 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0), 175 176 SND_SOC_DAPM_INPUT("MICN"), 177 SND_SOC_DAPM_INPUT("MICP"), 178 SND_SOC_DAPM_INPUT("AUX"), 179 SND_SOC_DAPM_OUTPUT("MONOOUT"), 180 SND_SOC_DAPM_OUTPUT("SPKOUTP"), 181 SND_SOC_DAPM_OUTPUT("SPKOUTN"), 182 }; 183 184 static const struct snd_soc_dapm_route wm8510_dapm_routes[] = { 185 /* Mono output mixer */ 186 {"Mono Mixer", "PCM Playback Switch", "DAC"}, 187 {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, 188 {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, 189 190 /* Speaker output mixer */ 191 {"Speaker Mixer", "PCM Playback Switch", "DAC"}, 192 {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, 193 {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, 194 195 /* Outputs */ 196 {"Mono Out", NULL, "Mono Mixer"}, 197 {"MONOOUT", NULL, "Mono Out"}, 198 {"SpkN Out", NULL, "Speaker Mixer"}, 199 {"SpkP Out", NULL, "Speaker Mixer"}, 200 {"SPKOUTN", NULL, "SpkN Out"}, 201 {"SPKOUTP", NULL, "SpkP Out"}, 202 203 /* Microphone PGA */ 204 {"Mic PGA", "MICN Switch", "MICN"}, 205 {"Mic PGA", "MICP Switch", "MICP"}, 206 { "Mic PGA", "AUX Switch", "Aux Input" }, 207 208 /* Boost Mixer */ 209 {"Boost Mixer", "Mic PGA Switch", "Mic PGA"}, 210 {"Boost Mixer", "Mic Volume", "MICP"}, 211 {"Boost Mixer", "Aux Volume", "Aux Input"}, 212 213 {"ADC", NULL, "Boost Mixer"}, 214 }; 215 216 struct pll_ { 217 unsigned int pre_div:4; /* prescale - 1 */ 218 unsigned int n:4; 219 unsigned int k; 220 }; 221 222 static struct pll_ pll_div; 223 224 /* The size in bits of the pll divide multiplied by 10 225 * to allow rounding later */ 226 #define FIXED_PLL_SIZE ((1 << 24) * 10) 227 228 static void pll_factors(unsigned int target, unsigned int source) 229 { 230 unsigned long long Kpart; 231 unsigned int K, Ndiv, Nmod; 232 233 Ndiv = target / source; 234 if (Ndiv < 6) { 235 source >>= 1; 236 pll_div.pre_div = 1; 237 Ndiv = target / source; 238 } else 239 pll_div.pre_div = 0; 240 241 if ((Ndiv < 6) || (Ndiv > 12)) 242 printk(KERN_WARNING 243 "WM8510 N value %u outwith recommended range!d\n", 244 Ndiv); 245 246 pll_div.n = Ndiv; 247 Nmod = target % source; 248 Kpart = FIXED_PLL_SIZE * (long long)Nmod; 249 250 do_div(Kpart, source); 251 252 K = Kpart & 0xFFFFFFFF; 253 254 /* Check if we need to round */ 255 if ((K % 10) >= 5) 256 K += 5; 257 258 /* Move down to proper range now rounding is done */ 259 K /= 10; 260 261 pll_div.k = K; 262 } 263 264 static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, 265 int source, unsigned int freq_in, unsigned int freq_out) 266 { 267 struct snd_soc_codec *codec = codec_dai->codec; 268 u16 reg; 269 270 if (freq_in == 0 || freq_out == 0) { 271 /* Clock CODEC directly from MCLK */ 272 reg = snd_soc_read(codec, WM8510_CLOCK); 273 snd_soc_write(codec, WM8510_CLOCK, reg & 0x0ff); 274 275 /* Turn off PLL */ 276 reg = snd_soc_read(codec, WM8510_POWER1); 277 snd_soc_write(codec, WM8510_POWER1, reg & 0x1df); 278 return 0; 279 } 280 281 pll_factors(freq_out*4, freq_in); 282 283 snd_soc_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n); 284 snd_soc_write(codec, WM8510_PLLK1, pll_div.k >> 18); 285 snd_soc_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff); 286 snd_soc_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff); 287 reg = snd_soc_read(codec, WM8510_POWER1); 288 snd_soc_write(codec, WM8510_POWER1, reg | 0x020); 289 290 /* Run CODEC from PLL instead of MCLK */ 291 reg = snd_soc_read(codec, WM8510_CLOCK); 292 snd_soc_write(codec, WM8510_CLOCK, reg | 0x100); 293 294 return 0; 295 } 296 297 /* 298 * Configure WM8510 clock dividers. 299 */ 300 static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 301 int div_id, int div) 302 { 303 struct snd_soc_codec *codec = codec_dai->codec; 304 u16 reg; 305 306 switch (div_id) { 307 case WM8510_OPCLKDIV: 308 reg = snd_soc_read(codec, WM8510_GPIO) & 0x1cf; 309 snd_soc_write(codec, WM8510_GPIO, reg | div); 310 break; 311 case WM8510_MCLKDIV: 312 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x11f; 313 snd_soc_write(codec, WM8510_CLOCK, reg | div); 314 break; 315 case WM8510_ADCCLK: 316 reg = snd_soc_read(codec, WM8510_ADC) & 0x1f7; 317 snd_soc_write(codec, WM8510_ADC, reg | div); 318 break; 319 case WM8510_DACCLK: 320 reg = snd_soc_read(codec, WM8510_DAC) & 0x1f7; 321 snd_soc_write(codec, WM8510_DAC, reg | div); 322 break; 323 case WM8510_BCLKDIV: 324 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x1e3; 325 snd_soc_write(codec, WM8510_CLOCK, reg | div); 326 break; 327 default: 328 return -EINVAL; 329 } 330 331 return 0; 332 } 333 334 static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai, 335 unsigned int fmt) 336 { 337 struct snd_soc_codec *codec = codec_dai->codec; 338 u16 iface = 0; 339 u16 clk = snd_soc_read(codec, WM8510_CLOCK) & 0x1fe; 340 341 /* set master/slave audio interface */ 342 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 343 case SND_SOC_DAIFMT_CBM_CFM: 344 clk |= 0x0001; 345 break; 346 case SND_SOC_DAIFMT_CBS_CFS: 347 break; 348 default: 349 return -EINVAL; 350 } 351 352 /* interface format */ 353 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 354 case SND_SOC_DAIFMT_I2S: 355 iface |= 0x0010; 356 break; 357 case SND_SOC_DAIFMT_RIGHT_J: 358 break; 359 case SND_SOC_DAIFMT_LEFT_J: 360 iface |= 0x0008; 361 break; 362 case SND_SOC_DAIFMT_DSP_A: 363 iface |= 0x00018; 364 break; 365 default: 366 return -EINVAL; 367 } 368 369 /* clock inversion */ 370 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 371 case SND_SOC_DAIFMT_NB_NF: 372 break; 373 case SND_SOC_DAIFMT_IB_IF: 374 iface |= 0x0180; 375 break; 376 case SND_SOC_DAIFMT_IB_NF: 377 iface |= 0x0100; 378 break; 379 case SND_SOC_DAIFMT_NB_IF: 380 iface |= 0x0080; 381 break; 382 default: 383 return -EINVAL; 384 } 385 386 snd_soc_write(codec, WM8510_IFACE, iface); 387 snd_soc_write(codec, WM8510_CLOCK, clk); 388 return 0; 389 } 390 391 static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream, 392 struct snd_pcm_hw_params *params, 393 struct snd_soc_dai *dai) 394 { 395 struct snd_soc_pcm_runtime *rtd = substream->private_data; 396 struct snd_soc_codec *codec = rtd->codec; 397 u16 iface = snd_soc_read(codec, WM8510_IFACE) & 0x19f; 398 u16 adn = snd_soc_read(codec, WM8510_ADD) & 0x1f1; 399 400 /* bit size */ 401 switch (params_format(params)) { 402 case SNDRV_PCM_FORMAT_S16_LE: 403 break; 404 case SNDRV_PCM_FORMAT_S20_3LE: 405 iface |= 0x0020; 406 break; 407 case SNDRV_PCM_FORMAT_S24_LE: 408 iface |= 0x0040; 409 break; 410 case SNDRV_PCM_FORMAT_S32_LE: 411 iface |= 0x0060; 412 break; 413 } 414 415 /* filter coefficient */ 416 switch (params_rate(params)) { 417 case 8000: 418 adn |= 0x5 << 1; 419 break; 420 case 11025: 421 adn |= 0x4 << 1; 422 break; 423 case 16000: 424 adn |= 0x3 << 1; 425 break; 426 case 22050: 427 adn |= 0x2 << 1; 428 break; 429 case 32000: 430 adn |= 0x1 << 1; 431 break; 432 case 44100: 433 case 48000: 434 break; 435 } 436 437 snd_soc_write(codec, WM8510_IFACE, iface); 438 snd_soc_write(codec, WM8510_ADD, adn); 439 return 0; 440 } 441 442 static int wm8510_mute(struct snd_soc_dai *dai, int mute) 443 { 444 struct snd_soc_codec *codec = dai->codec; 445 u16 mute_reg = snd_soc_read(codec, WM8510_DAC) & 0xffbf; 446 447 if (mute) 448 snd_soc_write(codec, WM8510_DAC, mute_reg | 0x40); 449 else 450 snd_soc_write(codec, WM8510_DAC, mute_reg); 451 return 0; 452 } 453 454 /* liam need to make this lower power with dapm */ 455 static int wm8510_set_bias_level(struct snd_soc_codec *codec, 456 enum snd_soc_bias_level level) 457 { 458 u16 power1 = snd_soc_read(codec, WM8510_POWER1) & ~0x3; 459 460 switch (level) { 461 case SND_SOC_BIAS_ON: 462 case SND_SOC_BIAS_PREPARE: 463 power1 |= 0x1; /* VMID 50k */ 464 snd_soc_write(codec, WM8510_POWER1, power1); 465 break; 466 467 case SND_SOC_BIAS_STANDBY: 468 power1 |= WM8510_POWER1_BIASEN | WM8510_POWER1_BUFIOEN; 469 470 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { 471 snd_soc_cache_sync(codec); 472 473 /* Initial cap charge at VMID 5k */ 474 snd_soc_write(codec, WM8510_POWER1, power1 | 0x3); 475 mdelay(100); 476 } 477 478 power1 |= 0x2; /* VMID 500k */ 479 snd_soc_write(codec, WM8510_POWER1, power1); 480 break; 481 482 case SND_SOC_BIAS_OFF: 483 snd_soc_write(codec, WM8510_POWER1, 0); 484 snd_soc_write(codec, WM8510_POWER2, 0); 485 snd_soc_write(codec, WM8510_POWER3, 0); 486 break; 487 } 488 489 codec->dapm.bias_level = level; 490 return 0; 491 } 492 493 #define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 494 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ 495 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) 496 497 #define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 498 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 499 500 static const struct snd_soc_dai_ops wm8510_dai_ops = { 501 .hw_params = wm8510_pcm_hw_params, 502 .digital_mute = wm8510_mute, 503 .set_fmt = wm8510_set_dai_fmt, 504 .set_clkdiv = wm8510_set_dai_clkdiv, 505 .set_pll = wm8510_set_dai_pll, 506 }; 507 508 static struct snd_soc_dai_driver wm8510_dai = { 509 .name = "wm8510-hifi", 510 .playback = { 511 .stream_name = "Playback", 512 .channels_min = 2, 513 .channels_max = 2, 514 .rates = WM8510_RATES, 515 .formats = WM8510_FORMATS,}, 516 .capture = { 517 .stream_name = "Capture", 518 .channels_min = 2, 519 .channels_max = 2, 520 .rates = WM8510_RATES, 521 .formats = WM8510_FORMATS,}, 522 .ops = &wm8510_dai_ops, 523 .symmetric_rates = 1, 524 }; 525 526 static int wm8510_suspend(struct snd_soc_codec *codec) 527 { 528 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 529 return 0; 530 } 531 532 static int wm8510_resume(struct snd_soc_codec *codec) 533 { 534 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 535 return 0; 536 } 537 538 static int wm8510_probe(struct snd_soc_codec *codec) 539 { 540 struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec); 541 int ret; 542 543 ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8510->control_type); 544 if (ret < 0) { 545 printk(KERN_ERR "wm8510: failed to set cache I/O: %d\n", ret); 546 return ret; 547 } 548 549 wm8510_reset(codec); 550 551 /* power on device */ 552 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 553 554 return ret; 555 } 556 557 /* power down chip */ 558 static int wm8510_remove(struct snd_soc_codec *codec) 559 { 560 struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec); 561 562 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 563 kfree(wm8510); 564 return 0; 565 } 566 567 static struct snd_soc_codec_driver soc_codec_dev_wm8510 = { 568 .probe = wm8510_probe, 569 .remove = wm8510_remove, 570 .suspend = wm8510_suspend, 571 .resume = wm8510_resume, 572 .set_bias_level = wm8510_set_bias_level, 573 .reg_cache_size = ARRAY_SIZE(wm8510_reg), 574 .reg_word_size = sizeof(u16), 575 .reg_cache_default =wm8510_reg, 576 577 .controls = wm8510_snd_controls, 578 .num_controls = ARRAY_SIZE(wm8510_snd_controls), 579 .dapm_widgets = wm8510_dapm_widgets, 580 .num_dapm_widgets = ARRAY_SIZE(wm8510_dapm_widgets), 581 .dapm_routes = wm8510_dapm_routes, 582 .num_dapm_routes = ARRAY_SIZE(wm8510_dapm_routes), 583 }; 584 585 static const struct of_device_id wm8510_of_match[] = { 586 { .compatible = "wlf,wm8510" }, 587 { }, 588 }; 589 590 #if defined(CONFIG_SPI_MASTER) 591 static int __devinit wm8510_spi_probe(struct spi_device *spi) 592 { 593 struct wm8510_priv *wm8510; 594 int ret; 595 596 wm8510 = kzalloc(sizeof(struct wm8510_priv), GFP_KERNEL); 597 if (wm8510 == NULL) 598 return -ENOMEM; 599 600 wm8510->control_type = SND_SOC_SPI; 601 spi_set_drvdata(spi, wm8510); 602 603 ret = snd_soc_register_codec(&spi->dev, 604 &soc_codec_dev_wm8510, &wm8510_dai, 1); 605 if (ret < 0) 606 kfree(wm8510); 607 return ret; 608 } 609 610 static int __devexit wm8510_spi_remove(struct spi_device *spi) 611 { 612 snd_soc_unregister_codec(&spi->dev); 613 return 0; 614 } 615 616 static struct spi_driver wm8510_spi_driver = { 617 .driver = { 618 .name = "wm8510", 619 .owner = THIS_MODULE, 620 .of_match_table = wm8510_of_match, 621 }, 622 .probe = wm8510_spi_probe, 623 .remove = __devexit_p(wm8510_spi_remove), 624 }; 625 #endif /* CONFIG_SPI_MASTER */ 626 627 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 628 static __devinit int wm8510_i2c_probe(struct i2c_client *i2c, 629 const struct i2c_device_id *id) 630 { 631 struct wm8510_priv *wm8510; 632 int ret; 633 634 wm8510 = kzalloc(sizeof(struct wm8510_priv), GFP_KERNEL); 635 if (wm8510 == NULL) 636 return -ENOMEM; 637 638 i2c_set_clientdata(i2c, wm8510); 639 wm8510->control_type = SND_SOC_I2C; 640 641 ret = snd_soc_register_codec(&i2c->dev, 642 &soc_codec_dev_wm8510, &wm8510_dai, 1); 643 if (ret < 0) 644 kfree(wm8510); 645 return ret; 646 } 647 648 static __devexit int wm8510_i2c_remove(struct i2c_client *client) 649 { 650 snd_soc_unregister_codec(&client->dev); 651 return 0; 652 } 653 654 static const struct i2c_device_id wm8510_i2c_id[] = { 655 { "wm8510", 0 }, 656 { } 657 }; 658 MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id); 659 660 static struct i2c_driver wm8510_i2c_driver = { 661 .driver = { 662 .name = "wm8510", 663 .owner = THIS_MODULE, 664 .of_match_table = wm8510_of_match, 665 }, 666 .probe = wm8510_i2c_probe, 667 .remove = __devexit_p(wm8510_i2c_remove), 668 .id_table = wm8510_i2c_id, 669 }; 670 #endif 671 672 static int __init wm8510_modinit(void) 673 { 674 int ret = 0; 675 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 676 ret = i2c_add_driver(&wm8510_i2c_driver); 677 if (ret != 0) { 678 printk(KERN_ERR "Failed to register WM8510 I2C driver: %d\n", 679 ret); 680 } 681 #endif 682 #if defined(CONFIG_SPI_MASTER) 683 ret = spi_register_driver(&wm8510_spi_driver); 684 if (ret != 0) { 685 printk(KERN_ERR "Failed to register WM8510 SPI driver: %d\n", 686 ret); 687 } 688 #endif 689 return ret; 690 } 691 module_init(wm8510_modinit); 692 693 static void __exit wm8510_exit(void) 694 { 695 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 696 i2c_del_driver(&wm8510_i2c_driver); 697 #endif 698 #if defined(CONFIG_SPI_MASTER) 699 spi_unregister_driver(&wm8510_spi_driver); 700 #endif 701 } 702 module_exit(wm8510_exit); 703 704 MODULE_DESCRIPTION("ASoC WM8510 driver"); 705 MODULE_AUTHOR("Liam Girdwood"); 706 MODULE_LICENSE("GPL"); 707