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_codec *codec = dai->codec; 396 u16 iface = snd_soc_read(codec, WM8510_IFACE) & 0x19f; 397 u16 adn = snd_soc_read(codec, WM8510_ADD) & 0x1f1; 398 399 /* bit size */ 400 switch (params_format(params)) { 401 case SNDRV_PCM_FORMAT_S16_LE: 402 break; 403 case SNDRV_PCM_FORMAT_S20_3LE: 404 iface |= 0x0020; 405 break; 406 case SNDRV_PCM_FORMAT_S24_LE: 407 iface |= 0x0040; 408 break; 409 case SNDRV_PCM_FORMAT_S32_LE: 410 iface |= 0x0060; 411 break; 412 } 413 414 /* filter coefficient */ 415 switch (params_rate(params)) { 416 case 8000: 417 adn |= 0x5 << 1; 418 break; 419 case 11025: 420 adn |= 0x4 << 1; 421 break; 422 case 16000: 423 adn |= 0x3 << 1; 424 break; 425 case 22050: 426 adn |= 0x2 << 1; 427 break; 428 case 32000: 429 adn |= 0x1 << 1; 430 break; 431 case 44100: 432 case 48000: 433 break; 434 } 435 436 snd_soc_write(codec, WM8510_IFACE, iface); 437 snd_soc_write(codec, WM8510_ADD, adn); 438 return 0; 439 } 440 441 static int wm8510_mute(struct snd_soc_dai *dai, int mute) 442 { 443 struct snd_soc_codec *codec = dai->codec; 444 u16 mute_reg = snd_soc_read(codec, WM8510_DAC) & 0xffbf; 445 446 if (mute) 447 snd_soc_write(codec, WM8510_DAC, mute_reg | 0x40); 448 else 449 snd_soc_write(codec, WM8510_DAC, mute_reg); 450 return 0; 451 } 452 453 /* liam need to make this lower power with dapm */ 454 static int wm8510_set_bias_level(struct snd_soc_codec *codec, 455 enum snd_soc_bias_level level) 456 { 457 u16 power1 = snd_soc_read(codec, WM8510_POWER1) & ~0x3; 458 459 switch (level) { 460 case SND_SOC_BIAS_ON: 461 case SND_SOC_BIAS_PREPARE: 462 power1 |= 0x1; /* VMID 50k */ 463 snd_soc_write(codec, WM8510_POWER1, power1); 464 break; 465 466 case SND_SOC_BIAS_STANDBY: 467 power1 |= WM8510_POWER1_BIASEN | WM8510_POWER1_BUFIOEN; 468 469 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { 470 snd_soc_cache_sync(codec); 471 472 /* Initial cap charge at VMID 5k */ 473 snd_soc_write(codec, WM8510_POWER1, power1 | 0x3); 474 mdelay(100); 475 } 476 477 power1 |= 0x2; /* VMID 500k */ 478 snd_soc_write(codec, WM8510_POWER1, power1); 479 break; 480 481 case SND_SOC_BIAS_OFF: 482 snd_soc_write(codec, WM8510_POWER1, 0); 483 snd_soc_write(codec, WM8510_POWER2, 0); 484 snd_soc_write(codec, WM8510_POWER3, 0); 485 break; 486 } 487 488 codec->dapm.bias_level = level; 489 return 0; 490 } 491 492 #define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 493 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ 494 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) 495 496 #define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 497 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 498 499 static const struct snd_soc_dai_ops wm8510_dai_ops = { 500 .hw_params = wm8510_pcm_hw_params, 501 .digital_mute = wm8510_mute, 502 .set_fmt = wm8510_set_dai_fmt, 503 .set_clkdiv = wm8510_set_dai_clkdiv, 504 .set_pll = wm8510_set_dai_pll, 505 }; 506 507 static struct snd_soc_dai_driver wm8510_dai = { 508 .name = "wm8510-hifi", 509 .playback = { 510 .stream_name = "Playback", 511 .channels_min = 2, 512 .channels_max = 2, 513 .rates = WM8510_RATES, 514 .formats = WM8510_FORMATS,}, 515 .capture = { 516 .stream_name = "Capture", 517 .channels_min = 2, 518 .channels_max = 2, 519 .rates = WM8510_RATES, 520 .formats = WM8510_FORMATS,}, 521 .ops = &wm8510_dai_ops, 522 .symmetric_rates = 1, 523 }; 524 525 static int wm8510_suspend(struct snd_soc_codec *codec) 526 { 527 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 528 return 0; 529 } 530 531 static int wm8510_resume(struct snd_soc_codec *codec) 532 { 533 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 534 return 0; 535 } 536 537 static int wm8510_probe(struct snd_soc_codec *codec) 538 { 539 struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec); 540 int ret; 541 542 ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8510->control_type); 543 if (ret < 0) { 544 printk(KERN_ERR "wm8510: failed to set cache I/O: %d\n", ret); 545 return ret; 546 } 547 548 wm8510_reset(codec); 549 550 /* power on device */ 551 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 552 553 return ret; 554 } 555 556 /* power down chip */ 557 static int wm8510_remove(struct snd_soc_codec *codec) 558 { 559 struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec); 560 561 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 562 kfree(wm8510); 563 return 0; 564 } 565 566 static struct snd_soc_codec_driver soc_codec_dev_wm8510 = { 567 .probe = wm8510_probe, 568 .remove = wm8510_remove, 569 .suspend = wm8510_suspend, 570 .resume = wm8510_resume, 571 .set_bias_level = wm8510_set_bias_level, 572 .reg_cache_size = ARRAY_SIZE(wm8510_reg), 573 .reg_word_size = sizeof(u16), 574 .reg_cache_default =wm8510_reg, 575 576 .controls = wm8510_snd_controls, 577 .num_controls = ARRAY_SIZE(wm8510_snd_controls), 578 .dapm_widgets = wm8510_dapm_widgets, 579 .num_dapm_widgets = ARRAY_SIZE(wm8510_dapm_widgets), 580 .dapm_routes = wm8510_dapm_routes, 581 .num_dapm_routes = ARRAY_SIZE(wm8510_dapm_routes), 582 }; 583 584 static const struct of_device_id wm8510_of_match[] = { 585 { .compatible = "wlf,wm8510" }, 586 { }, 587 }; 588 589 #if defined(CONFIG_SPI_MASTER) 590 static int __devinit wm8510_spi_probe(struct spi_device *spi) 591 { 592 struct wm8510_priv *wm8510; 593 int ret; 594 595 wm8510 = kzalloc(sizeof(struct wm8510_priv), GFP_KERNEL); 596 if (wm8510 == NULL) 597 return -ENOMEM; 598 599 wm8510->control_type = SND_SOC_SPI; 600 spi_set_drvdata(spi, wm8510); 601 602 ret = snd_soc_register_codec(&spi->dev, 603 &soc_codec_dev_wm8510, &wm8510_dai, 1); 604 if (ret < 0) 605 kfree(wm8510); 606 return ret; 607 } 608 609 static int __devexit wm8510_spi_remove(struct spi_device *spi) 610 { 611 snd_soc_unregister_codec(&spi->dev); 612 return 0; 613 } 614 615 static struct spi_driver wm8510_spi_driver = { 616 .driver = { 617 .name = "wm8510", 618 .owner = THIS_MODULE, 619 .of_match_table = wm8510_of_match, 620 }, 621 .probe = wm8510_spi_probe, 622 .remove = __devexit_p(wm8510_spi_remove), 623 }; 624 #endif /* CONFIG_SPI_MASTER */ 625 626 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 627 static __devinit int wm8510_i2c_probe(struct i2c_client *i2c, 628 const struct i2c_device_id *id) 629 { 630 struct wm8510_priv *wm8510; 631 int ret; 632 633 wm8510 = kzalloc(sizeof(struct wm8510_priv), GFP_KERNEL); 634 if (wm8510 == NULL) 635 return -ENOMEM; 636 637 i2c_set_clientdata(i2c, wm8510); 638 wm8510->control_type = SND_SOC_I2C; 639 640 ret = snd_soc_register_codec(&i2c->dev, 641 &soc_codec_dev_wm8510, &wm8510_dai, 1); 642 if (ret < 0) 643 kfree(wm8510); 644 return ret; 645 } 646 647 static __devexit int wm8510_i2c_remove(struct i2c_client *client) 648 { 649 snd_soc_unregister_codec(&client->dev); 650 return 0; 651 } 652 653 static const struct i2c_device_id wm8510_i2c_id[] = { 654 { "wm8510", 0 }, 655 { } 656 }; 657 MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id); 658 659 static struct i2c_driver wm8510_i2c_driver = { 660 .driver = { 661 .name = "wm8510", 662 .owner = THIS_MODULE, 663 .of_match_table = wm8510_of_match, 664 }, 665 .probe = wm8510_i2c_probe, 666 .remove = __devexit_p(wm8510_i2c_remove), 667 .id_table = wm8510_i2c_id, 668 }; 669 #endif 670 671 static int __init wm8510_modinit(void) 672 { 673 int ret = 0; 674 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 675 ret = i2c_add_driver(&wm8510_i2c_driver); 676 if (ret != 0) { 677 printk(KERN_ERR "Failed to register WM8510 I2C driver: %d\n", 678 ret); 679 } 680 #endif 681 #if defined(CONFIG_SPI_MASTER) 682 ret = spi_register_driver(&wm8510_spi_driver); 683 if (ret != 0) { 684 printk(KERN_ERR "Failed to register WM8510 SPI driver: %d\n", 685 ret); 686 } 687 #endif 688 return ret; 689 } 690 module_init(wm8510_modinit); 691 692 static void __exit wm8510_exit(void) 693 { 694 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 695 i2c_del_driver(&wm8510_i2c_driver); 696 #endif 697 #if defined(CONFIG_SPI_MASTER) 698 spi_unregister_driver(&wm8510_spi_driver); 699 #endif 700 } 701 module_exit(wm8510_exit); 702 703 MODULE_DESCRIPTION("ASoC WM8510 driver"); 704 MODULE_AUTHOR("Liam Girdwood"); 705 MODULE_LICENSE("GPL"); 706