wm8510.c revision 29e189c29d33d273424327ca4c1a74d8cdc04f48
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/platform_device.h> 21#include <linux/spi/spi.h> 22#include <sound/core.h> 23#include <sound/pcm.h> 24#include <sound/pcm_params.h> 25#include <sound/soc.h> 26#include <sound/soc-dapm.h> 27#include <sound/initval.h> 28 29#include "wm8510.h" 30 31#define WM8510_VERSION "0.6" 32 33struct snd_soc_codec_device soc_codec_dev_wm8510; 34 35/* 36 * wm8510 register cache 37 * We can't read the WM8510 register space when we are 38 * using 2 wire for device control, so we cache them instead. 39 */ 40static const u16 wm8510_reg[WM8510_CACHEREGNUM] = { 41 0x0000, 0x0000, 0x0000, 0x0000, 42 0x0050, 0x0000, 0x0140, 0x0000, 43 0x0000, 0x0000, 0x0000, 0x00ff, 44 0x0000, 0x0000, 0x0100, 0x00ff, 45 0x0000, 0x0000, 0x012c, 0x002c, 46 0x002c, 0x002c, 0x002c, 0x0000, 47 0x0032, 0x0000, 0x0000, 0x0000, 48 0x0000, 0x0000, 0x0000, 0x0000, 49 0x0038, 0x000b, 0x0032, 0x0000, 50 0x0008, 0x000c, 0x0093, 0x00e9, 51 0x0000, 0x0000, 0x0000, 0x0000, 52 0x0003, 0x0010, 0x0000, 0x0000, 53 0x0000, 0x0002, 0x0001, 0x0000, 54 0x0000, 0x0000, 0x0039, 0x0000, 55 0x0001, 56}; 57 58#define WM8510_POWER1_BIASEN 0x08 59#define WM8510_POWER1_BUFIOEN 0x10 60 61#define wm8510_reset(c) snd_soc_write(c, WM8510_RESET, 0) 62 63static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" }; 64static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; 65static const char *wm8510_alc[] = { "ALC", "Limiter" }; 66 67static const struct soc_enum wm8510_enum[] = { 68 SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */ 69 SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */ 70 SOC_ENUM_SINGLE(WM8510_DAC, 4, 4, wm8510_deemp), 71 SOC_ENUM_SINGLE(WM8510_ALC3, 8, 2, wm8510_alc), 72}; 73 74static const struct snd_kcontrol_new wm8510_snd_controls[] = { 75 76SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0), 77 78SOC_ENUM("DAC Companding", wm8510_enum[1]), 79SOC_ENUM("ADC Companding", wm8510_enum[0]), 80 81SOC_ENUM("Playback De-emphasis", wm8510_enum[2]), 82SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0), 83 84SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0), 85 86SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0), 87SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0), 88SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0), 89 90SOC_SINGLE("Capture Volume", WM8510_ADCVOL, 0, 127, 0), 91 92SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1, 8, 1, 0), 93SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1, 4, 15, 0), 94SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1, 0, 15, 0), 95 96SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2, 4, 7, 0), 97SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2, 0, 15, 0), 98 99SOC_SINGLE("ALC Enable Switch", WM8510_ALC1, 8, 1, 0), 100SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1, 3, 7, 0), 101SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1, 0, 7, 0), 102 103SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2, 8, 1, 0), 104SOC_SINGLE("ALC Capture Hold", WM8510_ALC2, 4, 7, 0), 105SOC_SINGLE("ALC Capture Target", WM8510_ALC2, 0, 15, 0), 106 107SOC_ENUM("ALC Capture Mode", wm8510_enum[3]), 108SOC_SINGLE("ALC Capture Decay", WM8510_ALC3, 4, 15, 0), 109SOC_SINGLE("ALC Capture Attack", WM8510_ALC3, 0, 15, 0), 110 111SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE, 3, 1, 0), 112SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE, 0, 7, 0), 113 114SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA, 7, 1, 0), 115SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA, 0, 63, 0), 116 117SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL, 7, 1, 0), 118SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL, 6, 1, 1), 119SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL, 0, 63, 0), 120SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0), 121 122SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST, 8, 1, 0), 123SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1), 124}; 125 126/* Speaker Output Mixer */ 127static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = { 128SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0), 129SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0), 130SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0), 131}; 132 133/* Mono Output Mixer */ 134static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = { 135SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0), 136SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0), 137SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0), 138}; 139 140static const struct snd_kcontrol_new wm8510_boost_controls[] = { 141SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA, 6, 1, 1), 142SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0), 143SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0), 144}; 145 146static const struct snd_kcontrol_new wm8510_micpga_controls[] = { 147SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0), 148SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0), 149SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0), 150}; 151 152static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = { 153SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0, 154 &wm8510_speaker_mixer_controls[0], 155 ARRAY_SIZE(wm8510_speaker_mixer_controls)), 156SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0, 157 &wm8510_mono_mixer_controls[0], 158 ARRAY_SIZE(wm8510_mono_mixer_controls)), 159SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0), 160SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0), 161SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0), 162SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0), 163SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0), 164SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0), 165 166SND_SOC_DAPM_MIXER("Mic PGA", WM8510_POWER2, 2, 0, 167 &wm8510_micpga_controls[0], 168 ARRAY_SIZE(wm8510_micpga_controls)), 169SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0, 170 &wm8510_boost_controls[0], 171 ARRAY_SIZE(wm8510_boost_controls)), 172 173SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0), 174 175SND_SOC_DAPM_INPUT("MICN"), 176SND_SOC_DAPM_INPUT("MICP"), 177SND_SOC_DAPM_INPUT("AUX"), 178SND_SOC_DAPM_OUTPUT("MONOOUT"), 179SND_SOC_DAPM_OUTPUT("SPKOUTP"), 180SND_SOC_DAPM_OUTPUT("SPKOUTN"), 181}; 182 183static const struct snd_soc_dapm_route audio_map[] = { 184 /* Mono output mixer */ 185 {"Mono Mixer", "PCM Playback Switch", "DAC"}, 186 {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, 187 {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, 188 189 /* Speaker output mixer */ 190 {"Speaker Mixer", "PCM Playback Switch", "DAC"}, 191 {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, 192 {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, 193 194 /* Outputs */ 195 {"Mono Out", NULL, "Mono Mixer"}, 196 {"MONOOUT", NULL, "Mono Out"}, 197 {"SpkN Out", NULL, "Speaker Mixer"}, 198 {"SpkP Out", NULL, "Speaker Mixer"}, 199 {"SPKOUTN", NULL, "SpkN Out"}, 200 {"SPKOUTP", NULL, "SpkP Out"}, 201 202 /* Microphone PGA */ 203 {"Mic PGA", "MICN Switch", "MICN"}, 204 {"Mic PGA", "MICP Switch", "MICP"}, 205 { "Mic PGA", "AUX Switch", "Aux Input" }, 206 207 /* Boost Mixer */ 208 {"Boost Mixer", "Mic PGA Switch", "Mic PGA"}, 209 {"Boost Mixer", "Mic Volume", "MICP"}, 210 {"Boost Mixer", "Aux Volume", "Aux Input"}, 211 212 {"ADC", NULL, "Boost Mixer"}, 213}; 214 215static int wm8510_add_widgets(struct snd_soc_codec *codec) 216{ 217 snd_soc_dapm_new_controls(codec, wm8510_dapm_widgets, 218 ARRAY_SIZE(wm8510_dapm_widgets)); 219 220 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 221 222 return 0; 223} 224 225struct pll_ { 226 unsigned int pre_div:4; /* prescale - 1 */ 227 unsigned int n:4; 228 unsigned int k; 229}; 230 231static struct pll_ pll_div; 232 233/* The size in bits of the pll divide multiplied by 10 234 * to allow rounding later */ 235#define FIXED_PLL_SIZE ((1 << 24) * 10) 236 237static void pll_factors(unsigned int target, unsigned int source) 238{ 239 unsigned long long Kpart; 240 unsigned int K, Ndiv, Nmod; 241 242 Ndiv = target / source; 243 if (Ndiv < 6) { 244 source >>= 1; 245 pll_div.pre_div = 1; 246 Ndiv = target / source; 247 } else 248 pll_div.pre_div = 0; 249 250 if ((Ndiv < 6) || (Ndiv > 12)) 251 printk(KERN_WARNING 252 "WM8510 N value %u outwith recommended range!d\n", 253 Ndiv); 254 255 pll_div.n = Ndiv; 256 Nmod = target % source; 257 Kpart = FIXED_PLL_SIZE * (long long)Nmod; 258 259 do_div(Kpart, source); 260 261 K = Kpart & 0xFFFFFFFF; 262 263 /* Check if we need to round */ 264 if ((K % 10) >= 5) 265 K += 5; 266 267 /* Move down to proper range now rounding is done */ 268 K /= 10; 269 270 pll_div.k = K; 271} 272 273static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, 274 int source, unsigned int freq_in, unsigned int freq_out) 275{ 276 struct snd_soc_codec *codec = codec_dai->codec; 277 u16 reg; 278 279 if (freq_in == 0 || freq_out == 0) { 280 /* Clock CODEC directly from MCLK */ 281 reg = snd_soc_read(codec, WM8510_CLOCK); 282 snd_soc_write(codec, WM8510_CLOCK, reg & 0x0ff); 283 284 /* Turn off PLL */ 285 reg = snd_soc_read(codec, WM8510_POWER1); 286 snd_soc_write(codec, WM8510_POWER1, reg & 0x1df); 287 return 0; 288 } 289 290 pll_factors(freq_out*4, freq_in); 291 292 snd_soc_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n); 293 snd_soc_write(codec, WM8510_PLLK1, pll_div.k >> 18); 294 snd_soc_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff); 295 snd_soc_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff); 296 reg = snd_soc_read(codec, WM8510_POWER1); 297 snd_soc_write(codec, WM8510_POWER1, reg | 0x020); 298 299 /* Run CODEC from PLL instead of MCLK */ 300 reg = snd_soc_read(codec, WM8510_CLOCK); 301 snd_soc_write(codec, WM8510_CLOCK, reg | 0x100); 302 303 return 0; 304} 305 306/* 307 * Configure WM8510 clock dividers. 308 */ 309static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 310 int div_id, int div) 311{ 312 struct snd_soc_codec *codec = codec_dai->codec; 313 u16 reg; 314 315 switch (div_id) { 316 case WM8510_OPCLKDIV: 317 reg = snd_soc_read(codec, WM8510_GPIO) & 0x1cf; 318 snd_soc_write(codec, WM8510_GPIO, reg | div); 319 break; 320 case WM8510_MCLKDIV: 321 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x11f; 322 snd_soc_write(codec, WM8510_CLOCK, reg | div); 323 break; 324 case WM8510_ADCCLK: 325 reg = snd_soc_read(codec, WM8510_ADC) & 0x1f7; 326 snd_soc_write(codec, WM8510_ADC, reg | div); 327 break; 328 case WM8510_DACCLK: 329 reg = snd_soc_read(codec, WM8510_DAC) & 0x1f7; 330 snd_soc_write(codec, WM8510_DAC, reg | div); 331 break; 332 case WM8510_BCLKDIV: 333 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x1e3; 334 snd_soc_write(codec, WM8510_CLOCK, reg | div); 335 break; 336 default: 337 return -EINVAL; 338 } 339 340 return 0; 341} 342 343static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai, 344 unsigned int fmt) 345{ 346 struct snd_soc_codec *codec = codec_dai->codec; 347 u16 iface = 0; 348 u16 clk = snd_soc_read(codec, WM8510_CLOCK) & 0x1fe; 349 350 /* set master/slave audio interface */ 351 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 352 case SND_SOC_DAIFMT_CBM_CFM: 353 clk |= 0x0001; 354 break; 355 case SND_SOC_DAIFMT_CBS_CFS: 356 break; 357 default: 358 return -EINVAL; 359 } 360 361 /* interface format */ 362 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 363 case SND_SOC_DAIFMT_I2S: 364 iface |= 0x0010; 365 break; 366 case SND_SOC_DAIFMT_RIGHT_J: 367 break; 368 case SND_SOC_DAIFMT_LEFT_J: 369 iface |= 0x0008; 370 break; 371 case SND_SOC_DAIFMT_DSP_A: 372 iface |= 0x00018; 373 break; 374 default: 375 return -EINVAL; 376 } 377 378 /* clock inversion */ 379 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 380 case SND_SOC_DAIFMT_NB_NF: 381 break; 382 case SND_SOC_DAIFMT_IB_IF: 383 iface |= 0x0180; 384 break; 385 case SND_SOC_DAIFMT_IB_NF: 386 iface |= 0x0100; 387 break; 388 case SND_SOC_DAIFMT_NB_IF: 389 iface |= 0x0080; 390 break; 391 default: 392 return -EINVAL; 393 } 394 395 snd_soc_write(codec, WM8510_IFACE, iface); 396 snd_soc_write(codec, WM8510_CLOCK, clk); 397 return 0; 398} 399 400static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream, 401 struct snd_pcm_hw_params *params, 402 struct snd_soc_dai *dai) 403{ 404 struct snd_soc_pcm_runtime *rtd = substream->private_data; 405 struct snd_soc_device *socdev = rtd->socdev; 406 struct snd_soc_codec *codec = socdev->card->codec; 407 u16 iface = snd_soc_read(codec, WM8510_IFACE) & 0x19f; 408 u16 adn = snd_soc_read(codec, WM8510_ADD) & 0x1f1; 409 410 /* bit size */ 411 switch (params_format(params)) { 412 case SNDRV_PCM_FORMAT_S16_LE: 413 break; 414 case SNDRV_PCM_FORMAT_S20_3LE: 415 iface |= 0x0020; 416 break; 417 case SNDRV_PCM_FORMAT_S24_LE: 418 iface |= 0x0040; 419 break; 420 case SNDRV_PCM_FORMAT_S32_LE: 421 iface |= 0x0060; 422 break; 423 } 424 425 /* filter coefficient */ 426 switch (params_rate(params)) { 427 case 8000: 428 adn |= 0x5 << 1; 429 break; 430 case 11025: 431 adn |= 0x4 << 1; 432 break; 433 case 16000: 434 adn |= 0x3 << 1; 435 break; 436 case 22050: 437 adn |= 0x2 << 1; 438 break; 439 case 32000: 440 adn |= 0x1 << 1; 441 break; 442 case 44100: 443 case 48000: 444 break; 445 } 446 447 snd_soc_write(codec, WM8510_IFACE, iface); 448 snd_soc_write(codec, WM8510_ADD, adn); 449 return 0; 450} 451 452static int wm8510_mute(struct snd_soc_dai *dai, int mute) 453{ 454 struct snd_soc_codec *codec = dai->codec; 455 u16 mute_reg = snd_soc_read(codec, WM8510_DAC) & 0xffbf; 456 457 if (mute) 458 snd_soc_write(codec, WM8510_DAC, mute_reg | 0x40); 459 else 460 snd_soc_write(codec, WM8510_DAC, mute_reg); 461 return 0; 462} 463 464/* liam need to make this lower power with dapm */ 465static int wm8510_set_bias_level(struct snd_soc_codec *codec, 466 enum snd_soc_bias_level level) 467{ 468 u16 power1 = snd_soc_read(codec, WM8510_POWER1) & ~0x3; 469 470 switch (level) { 471 case SND_SOC_BIAS_ON: 472 case SND_SOC_BIAS_PREPARE: 473 power1 |= 0x1; /* VMID 50k */ 474 snd_soc_write(codec, WM8510_POWER1, power1); 475 break; 476 477 case SND_SOC_BIAS_STANDBY: 478 power1 |= WM8510_POWER1_BIASEN | WM8510_POWER1_BUFIOEN; 479 480 if (codec->bias_level == SND_SOC_BIAS_OFF) { 481 /* Initial cap charge at VMID 5k */ 482 snd_soc_write(codec, WM8510_POWER1, power1 | 0x3); 483 mdelay(100); 484 } 485 486 power1 |= 0x2; /* VMID 500k */ 487 snd_soc_write(codec, WM8510_POWER1, power1); 488 break; 489 490 case SND_SOC_BIAS_OFF: 491 snd_soc_write(codec, WM8510_POWER1, 0); 492 snd_soc_write(codec, WM8510_POWER2, 0); 493 snd_soc_write(codec, WM8510_POWER3, 0); 494 break; 495 } 496 497 codec->bias_level = level; 498 return 0; 499} 500 501#define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 502 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ 503 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) 504 505#define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 506 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 507 508static struct snd_soc_dai_ops wm8510_dai_ops = { 509 .hw_params = wm8510_pcm_hw_params, 510 .digital_mute = wm8510_mute, 511 .set_fmt = wm8510_set_dai_fmt, 512 .set_clkdiv = wm8510_set_dai_clkdiv, 513 .set_pll = wm8510_set_dai_pll, 514}; 515 516struct snd_soc_dai wm8510_dai = { 517 .name = "WM8510 HiFi", 518 .playback = { 519 .stream_name = "Playback", 520 .channels_min = 2, 521 .channels_max = 2, 522 .rates = WM8510_RATES, 523 .formats = WM8510_FORMATS,}, 524 .capture = { 525 .stream_name = "Capture", 526 .channels_min = 2, 527 .channels_max = 2, 528 .rates = WM8510_RATES, 529 .formats = WM8510_FORMATS,}, 530 .ops = &wm8510_dai_ops, 531 .symmetric_rates = 1, 532}; 533EXPORT_SYMBOL_GPL(wm8510_dai); 534 535static int wm8510_suspend(struct platform_device *pdev, pm_message_t state) 536{ 537 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 538 struct snd_soc_codec *codec = socdev->card->codec; 539 540 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 541 return 0; 542} 543 544static int wm8510_resume(struct platform_device *pdev) 545{ 546 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 547 struct snd_soc_codec *codec = socdev->card->codec; 548 int i; 549 u8 data[2]; 550 u16 *cache = codec->reg_cache; 551 552 /* Sync reg_cache with the hardware */ 553 for (i = 0; i < ARRAY_SIZE(wm8510_reg); i++) { 554 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 555 data[1] = cache[i] & 0x00ff; 556 codec->hw_write(codec->control_data, data, 2); 557 } 558 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 559 560 return 0; 561} 562 563/* 564 * initialise the WM8510 driver 565 * register the mixer and dsp interfaces with the kernel 566 */ 567static int wm8510_init(struct snd_soc_device *socdev, 568 enum snd_soc_control_type control) 569{ 570 struct snd_soc_codec *codec = socdev->card->codec; 571 int ret = 0; 572 573 codec->name = "WM8510"; 574 codec->owner = THIS_MODULE; 575 codec->set_bias_level = wm8510_set_bias_level; 576 codec->dai = &wm8510_dai; 577 codec->num_dai = 1; 578 codec->reg_cache_size = ARRAY_SIZE(wm8510_reg); 579 codec->reg_cache = kmemdup(wm8510_reg, sizeof(wm8510_reg), GFP_KERNEL); 580 581 if (codec->reg_cache == NULL) 582 return -ENOMEM; 583 584 ret = snd_soc_codec_set_cache_io(codec, 7, 9, control); 585 if (ret < 0) { 586 printk(KERN_ERR "wm8510: failed to set cache I/O: %d\n", 587 ret); 588 goto err; 589 } 590 591 wm8510_reset(codec); 592 593 /* register pcms */ 594 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 595 if (ret < 0) { 596 printk(KERN_ERR "wm8510: failed to create pcms\n"); 597 goto err; 598 } 599 600 /* power on device */ 601 codec->bias_level = SND_SOC_BIAS_OFF; 602 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 603 snd_soc_add_controls(codec, wm8510_snd_controls, 604 ARRAY_SIZE(wm8510_snd_controls)); 605 wm8510_add_widgets(codec); 606 607 return ret; 608 609err: 610 kfree(codec->reg_cache); 611 return ret; 612} 613 614static struct snd_soc_device *wm8510_socdev; 615 616#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 617 618/* 619 * WM8510 2 wire address is 0x1a 620 */ 621 622static int wm8510_i2c_probe(struct i2c_client *i2c, 623 const struct i2c_device_id *id) 624{ 625 struct snd_soc_device *socdev = wm8510_socdev; 626 struct snd_soc_codec *codec = socdev->card->codec; 627 int ret; 628 629 i2c_set_clientdata(i2c, codec); 630 codec->control_data = i2c; 631 632 ret = wm8510_init(socdev, SND_SOC_I2C); 633 if (ret < 0) 634 pr_err("failed to initialise WM8510\n"); 635 636 return ret; 637} 638 639static int wm8510_i2c_remove(struct i2c_client *client) 640{ 641 struct snd_soc_codec *codec = i2c_get_clientdata(client); 642 kfree(codec->reg_cache); 643 return 0; 644} 645 646static const struct i2c_device_id wm8510_i2c_id[] = { 647 { "wm8510", 0 }, 648 { } 649}; 650MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id); 651 652static struct i2c_driver wm8510_i2c_driver = { 653 .driver = { 654 .name = "WM8510 I2C Codec", 655 .owner = THIS_MODULE, 656 }, 657 .probe = wm8510_i2c_probe, 658 .remove = wm8510_i2c_remove, 659 .id_table = wm8510_i2c_id, 660}; 661 662static int wm8510_add_i2c_device(struct platform_device *pdev, 663 const struct wm8510_setup_data *setup) 664{ 665 struct i2c_board_info info; 666 struct i2c_adapter *adapter; 667 struct i2c_client *client; 668 int ret; 669 670 ret = i2c_add_driver(&wm8510_i2c_driver); 671 if (ret != 0) { 672 dev_err(&pdev->dev, "can't add i2c driver\n"); 673 return ret; 674 } 675 676 memset(&info, 0, sizeof(struct i2c_board_info)); 677 info.addr = setup->i2c_address; 678 strlcpy(info.type, "wm8510", I2C_NAME_SIZE); 679 680 adapter = i2c_get_adapter(setup->i2c_bus); 681 if (!adapter) { 682 dev_err(&pdev->dev, "can't get i2c adapter %d\n", 683 setup->i2c_bus); 684 goto err_driver; 685 } 686 687 client = i2c_new_device(adapter, &info); 688 i2c_put_adapter(adapter); 689 if (!client) { 690 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", 691 (unsigned int)info.addr); 692 goto err_driver; 693 } 694 695 return 0; 696 697err_driver: 698 i2c_del_driver(&wm8510_i2c_driver); 699 return -ENODEV; 700} 701#endif 702 703#if defined(CONFIG_SPI_MASTER) 704static int __devinit wm8510_spi_probe(struct spi_device *spi) 705{ 706 struct snd_soc_device *socdev = wm8510_socdev; 707 struct snd_soc_codec *codec = socdev->card->codec; 708 int ret; 709 710 codec->control_data = spi; 711 712 ret = wm8510_init(socdev, SND_SOC_SPI); 713 if (ret < 0) 714 dev_err(&spi->dev, "failed to initialise WM8510\n"); 715 716 return ret; 717} 718 719static int __devexit wm8510_spi_remove(struct spi_device *spi) 720{ 721 return 0; 722} 723 724static struct spi_driver wm8510_spi_driver = { 725 .driver = { 726 .name = "wm8510", 727 .bus = &spi_bus_type, 728 .owner = THIS_MODULE, 729 }, 730 .probe = wm8510_spi_probe, 731 .remove = __devexit_p(wm8510_spi_remove), 732}; 733#endif /* CONFIG_SPI_MASTER */ 734 735static int wm8510_probe(struct platform_device *pdev) 736{ 737 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 738 struct wm8510_setup_data *setup; 739 struct snd_soc_codec *codec; 740 int ret = 0; 741 742 pr_info("WM8510 Audio Codec %s", WM8510_VERSION); 743 744 setup = socdev->codec_data; 745 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 746 if (codec == NULL) 747 return -ENOMEM; 748 749 socdev->card->codec = codec; 750 mutex_init(&codec->mutex); 751 INIT_LIST_HEAD(&codec->dapm_widgets); 752 INIT_LIST_HEAD(&codec->dapm_paths); 753 754 wm8510_socdev = socdev; 755#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 756 if (setup->i2c_address) { 757 ret = wm8510_add_i2c_device(pdev, setup); 758 } 759#endif 760#if defined(CONFIG_SPI_MASTER) 761 if (setup->spi) { 762 ret = spi_register_driver(&wm8510_spi_driver); 763 if (ret != 0) 764 printk(KERN_ERR "can't add spi driver"); 765 } 766#endif 767 768 if (ret != 0) 769 kfree(codec); 770 return ret; 771} 772 773/* power down chip */ 774static int wm8510_remove(struct platform_device *pdev) 775{ 776 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 777 struct snd_soc_codec *codec = socdev->card->codec; 778 779 if (codec->control_data) 780 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 781 782 snd_soc_free_pcms(socdev); 783 snd_soc_dapm_free(socdev); 784#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 785 i2c_unregister_device(codec->control_data); 786 i2c_del_driver(&wm8510_i2c_driver); 787#endif 788#if defined(CONFIG_SPI_MASTER) 789 spi_unregister_driver(&wm8510_spi_driver); 790#endif 791 kfree(codec); 792 793 return 0; 794} 795 796struct snd_soc_codec_device soc_codec_dev_wm8510 = { 797 .probe = wm8510_probe, 798 .remove = wm8510_remove, 799 .suspend = wm8510_suspend, 800 .resume = wm8510_resume, 801}; 802EXPORT_SYMBOL_GPL(soc_codec_dev_wm8510); 803 804static int __init wm8510_modinit(void) 805{ 806 return snd_soc_register_dai(&wm8510_dai); 807} 808module_init(wm8510_modinit); 809 810static void __exit wm8510_exit(void) 811{ 812 snd_soc_unregister_dai(&wm8510_dai); 813} 814module_exit(wm8510_exit); 815 816MODULE_DESCRIPTION("ASoC WM8510 driver"); 817MODULE_AUTHOR("Liam Girdwood"); 818MODULE_LICENSE("GPL"); 819