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 <linux/slab.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/soc-dapm.h> 28#include <sound/initval.h> 29 30#include "wm8510.h" 31 32#define WM8510_VERSION "0.6" 33 34struct snd_soc_codec_device soc_codec_dev_wm8510; 35 36/* 37 * wm8510 register cache 38 * We can't read the WM8510 register space when we are 39 * using 2 wire for device control, so we cache them instead. 40 */ 41static const u16 wm8510_reg[WM8510_CACHEREGNUM] = { 42 0x0000, 0x0000, 0x0000, 0x0000, 43 0x0050, 0x0000, 0x0140, 0x0000, 44 0x0000, 0x0000, 0x0000, 0x00ff, 45 0x0000, 0x0000, 0x0100, 0x00ff, 46 0x0000, 0x0000, 0x012c, 0x002c, 47 0x002c, 0x002c, 0x002c, 0x0000, 48 0x0032, 0x0000, 0x0000, 0x0000, 49 0x0000, 0x0000, 0x0000, 0x0000, 50 0x0038, 0x000b, 0x0032, 0x0000, 51 0x0008, 0x000c, 0x0093, 0x00e9, 52 0x0000, 0x0000, 0x0000, 0x0000, 53 0x0003, 0x0010, 0x0000, 0x0000, 54 0x0000, 0x0002, 0x0001, 0x0000, 55 0x0000, 0x0000, 0x0039, 0x0000, 56 0x0001, 57}; 58 59#define WM8510_POWER1_BIASEN 0x08 60#define WM8510_POWER1_BUFIOEN 0x10 61 62#define wm8510_reset(c) snd_soc_write(c, WM8510_RESET, 0) 63 64static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" }; 65static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; 66static const char *wm8510_alc[] = { "ALC", "Limiter" }; 67 68static 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 75static const struct snd_kcontrol_new wm8510_snd_controls[] = { 76 77SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0), 78 79SOC_ENUM("DAC Companding", wm8510_enum[1]), 80SOC_ENUM("ADC Companding", wm8510_enum[0]), 81 82SOC_ENUM("Playback De-emphasis", wm8510_enum[2]), 83SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0), 84 85SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0), 86 87SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0), 88SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0), 89SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0), 90 91SOC_SINGLE("Capture Volume", WM8510_ADCVOL, 0, 127, 0), 92 93SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1, 8, 1, 0), 94SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1, 4, 15, 0), 95SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1, 0, 15, 0), 96 97SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2, 4, 7, 0), 98SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2, 0, 15, 0), 99 100SOC_SINGLE("ALC Enable Switch", WM8510_ALC1, 8, 1, 0), 101SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1, 3, 7, 0), 102SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1, 0, 7, 0), 103 104SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2, 8, 1, 0), 105SOC_SINGLE("ALC Capture Hold", WM8510_ALC2, 4, 7, 0), 106SOC_SINGLE("ALC Capture Target", WM8510_ALC2, 0, 15, 0), 107 108SOC_ENUM("ALC Capture Mode", wm8510_enum[3]), 109SOC_SINGLE("ALC Capture Decay", WM8510_ALC3, 4, 15, 0), 110SOC_SINGLE("ALC Capture Attack", WM8510_ALC3, 0, 15, 0), 111 112SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE, 3, 1, 0), 113SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE, 0, 7, 0), 114 115SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA, 7, 1, 0), 116SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA, 0, 63, 0), 117 118SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL, 7, 1, 0), 119SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL, 6, 1, 1), 120SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL, 0, 63, 0), 121SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0), 122 123SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST, 8, 1, 0), 124SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1), 125}; 126 127/* Speaker Output Mixer */ 128static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = { 129SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0), 130SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0), 131SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0), 132}; 133 134/* Mono Output Mixer */ 135static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = { 136SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0), 137SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0), 138SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0), 139}; 140 141static const struct snd_kcontrol_new wm8510_boost_controls[] = { 142SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA, 6, 1, 1), 143SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0), 144SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0), 145}; 146 147static const struct snd_kcontrol_new wm8510_micpga_controls[] = { 148SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0), 149SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0), 150SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0), 151}; 152 153static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = { 154SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0, 155 &wm8510_speaker_mixer_controls[0], 156 ARRAY_SIZE(wm8510_speaker_mixer_controls)), 157SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0, 158 &wm8510_mono_mixer_controls[0], 159 ARRAY_SIZE(wm8510_mono_mixer_controls)), 160SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0), 161SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0), 162SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0), 163SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0), 164SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0), 165SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0), 166 167SND_SOC_DAPM_MIXER("Mic PGA", WM8510_POWER2, 2, 0, 168 &wm8510_micpga_controls[0], 169 ARRAY_SIZE(wm8510_micpga_controls)), 170SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0, 171 &wm8510_boost_controls[0], 172 ARRAY_SIZE(wm8510_boost_controls)), 173 174SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0), 175 176SND_SOC_DAPM_INPUT("MICN"), 177SND_SOC_DAPM_INPUT("MICP"), 178SND_SOC_DAPM_INPUT("AUX"), 179SND_SOC_DAPM_OUTPUT("MONOOUT"), 180SND_SOC_DAPM_OUTPUT("SPKOUTP"), 181SND_SOC_DAPM_OUTPUT("SPKOUTN"), 182}; 183 184static const struct snd_soc_dapm_route audio_map[] = { 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 216static int wm8510_add_widgets(struct snd_soc_codec *codec) 217{ 218 snd_soc_dapm_new_controls(codec, wm8510_dapm_widgets, 219 ARRAY_SIZE(wm8510_dapm_widgets)); 220 221 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 222 223 return 0; 224} 225 226struct pll_ { 227 unsigned int pre_div:4; /* prescale - 1 */ 228 unsigned int n:4; 229 unsigned int k; 230}; 231 232static struct pll_ pll_div; 233 234/* The size in bits of the pll divide multiplied by 10 235 * to allow rounding later */ 236#define FIXED_PLL_SIZE ((1 << 24) * 10) 237 238static void pll_factors(unsigned int target, unsigned int source) 239{ 240 unsigned long long Kpart; 241 unsigned int K, Ndiv, Nmod; 242 243 Ndiv = target / source; 244 if (Ndiv < 6) { 245 source >>= 1; 246 pll_div.pre_div = 1; 247 Ndiv = target / source; 248 } else 249 pll_div.pre_div = 0; 250 251 if ((Ndiv < 6) || (Ndiv > 12)) 252 printk(KERN_WARNING 253 "WM8510 N value %u outwith recommended range!d\n", 254 Ndiv); 255 256 pll_div.n = Ndiv; 257 Nmod = target % source; 258 Kpart = FIXED_PLL_SIZE * (long long)Nmod; 259 260 do_div(Kpart, source); 261 262 K = Kpart & 0xFFFFFFFF; 263 264 /* Check if we need to round */ 265 if ((K % 10) >= 5) 266 K += 5; 267 268 /* Move down to proper range now rounding is done */ 269 K /= 10; 270 271 pll_div.k = K; 272} 273 274static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, 275 int source, unsigned int freq_in, unsigned int freq_out) 276{ 277 struct snd_soc_codec *codec = codec_dai->codec; 278 u16 reg; 279 280 if (freq_in == 0 || freq_out == 0) { 281 /* Clock CODEC directly from MCLK */ 282 reg = snd_soc_read(codec, WM8510_CLOCK); 283 snd_soc_write(codec, WM8510_CLOCK, reg & 0x0ff); 284 285 /* Turn off PLL */ 286 reg = snd_soc_read(codec, WM8510_POWER1); 287 snd_soc_write(codec, WM8510_POWER1, reg & 0x1df); 288 return 0; 289 } 290 291 pll_factors(freq_out*4, freq_in); 292 293 snd_soc_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n); 294 snd_soc_write(codec, WM8510_PLLK1, pll_div.k >> 18); 295 snd_soc_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff); 296 snd_soc_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff); 297 reg = snd_soc_read(codec, WM8510_POWER1); 298 snd_soc_write(codec, WM8510_POWER1, reg | 0x020); 299 300 /* Run CODEC from PLL instead of MCLK */ 301 reg = snd_soc_read(codec, WM8510_CLOCK); 302 snd_soc_write(codec, WM8510_CLOCK, reg | 0x100); 303 304 return 0; 305} 306 307/* 308 * Configure WM8510 clock dividers. 309 */ 310static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 311 int div_id, int div) 312{ 313 struct snd_soc_codec *codec = codec_dai->codec; 314 u16 reg; 315 316 switch (div_id) { 317 case WM8510_OPCLKDIV: 318 reg = snd_soc_read(codec, WM8510_GPIO) & 0x1cf; 319 snd_soc_write(codec, WM8510_GPIO, reg | div); 320 break; 321 case WM8510_MCLKDIV: 322 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x11f; 323 snd_soc_write(codec, WM8510_CLOCK, reg | div); 324 break; 325 case WM8510_ADCCLK: 326 reg = snd_soc_read(codec, WM8510_ADC) & 0x1f7; 327 snd_soc_write(codec, WM8510_ADC, reg | div); 328 break; 329 case WM8510_DACCLK: 330 reg = snd_soc_read(codec, WM8510_DAC) & 0x1f7; 331 snd_soc_write(codec, WM8510_DAC, reg | div); 332 break; 333 case WM8510_BCLKDIV: 334 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x1e3; 335 snd_soc_write(codec, WM8510_CLOCK, reg | div); 336 break; 337 default: 338 return -EINVAL; 339 } 340 341 return 0; 342} 343 344static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai, 345 unsigned int fmt) 346{ 347 struct snd_soc_codec *codec = codec_dai->codec; 348 u16 iface = 0; 349 u16 clk = snd_soc_read(codec, WM8510_CLOCK) & 0x1fe; 350 351 /* set master/slave audio interface */ 352 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 353 case SND_SOC_DAIFMT_CBM_CFM: 354 clk |= 0x0001; 355 break; 356 case SND_SOC_DAIFMT_CBS_CFS: 357 break; 358 default: 359 return -EINVAL; 360 } 361 362 /* interface format */ 363 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 364 case SND_SOC_DAIFMT_I2S: 365 iface |= 0x0010; 366 break; 367 case SND_SOC_DAIFMT_RIGHT_J: 368 break; 369 case SND_SOC_DAIFMT_LEFT_J: 370 iface |= 0x0008; 371 break; 372 case SND_SOC_DAIFMT_DSP_A: 373 iface |= 0x00018; 374 break; 375 default: 376 return -EINVAL; 377 } 378 379 /* clock inversion */ 380 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 381 case SND_SOC_DAIFMT_NB_NF: 382 break; 383 case SND_SOC_DAIFMT_IB_IF: 384 iface |= 0x0180; 385 break; 386 case SND_SOC_DAIFMT_IB_NF: 387 iface |= 0x0100; 388 break; 389 case SND_SOC_DAIFMT_NB_IF: 390 iface |= 0x0080; 391 break; 392 default: 393 return -EINVAL; 394 } 395 396 snd_soc_write(codec, WM8510_IFACE, iface); 397 snd_soc_write(codec, WM8510_CLOCK, clk); 398 return 0; 399} 400 401static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream, 402 struct snd_pcm_hw_params *params, 403 struct snd_soc_dai *dai) 404{ 405 struct snd_soc_pcm_runtime *rtd = substream->private_data; 406 struct snd_soc_device *socdev = rtd->socdev; 407 struct snd_soc_codec *codec = socdev->card->codec; 408 u16 iface = snd_soc_read(codec, WM8510_IFACE) & 0x19f; 409 u16 adn = snd_soc_read(codec, WM8510_ADD) & 0x1f1; 410 411 /* bit size */ 412 switch (params_format(params)) { 413 case SNDRV_PCM_FORMAT_S16_LE: 414 break; 415 case SNDRV_PCM_FORMAT_S20_3LE: 416 iface |= 0x0020; 417 break; 418 case SNDRV_PCM_FORMAT_S24_LE: 419 iface |= 0x0040; 420 break; 421 case SNDRV_PCM_FORMAT_S32_LE: 422 iface |= 0x0060; 423 break; 424 } 425 426 /* filter coefficient */ 427 switch (params_rate(params)) { 428 case 8000: 429 adn |= 0x5 << 1; 430 break; 431 case 11025: 432 adn |= 0x4 << 1; 433 break; 434 case 16000: 435 adn |= 0x3 << 1; 436 break; 437 case 22050: 438 adn |= 0x2 << 1; 439 break; 440 case 32000: 441 adn |= 0x1 << 1; 442 break; 443 case 44100: 444 case 48000: 445 break; 446 } 447 448 snd_soc_write(codec, WM8510_IFACE, iface); 449 snd_soc_write(codec, WM8510_ADD, adn); 450 return 0; 451} 452 453static int wm8510_mute(struct snd_soc_dai *dai, int mute) 454{ 455 struct snd_soc_codec *codec = dai->codec; 456 u16 mute_reg = snd_soc_read(codec, WM8510_DAC) & 0xffbf; 457 458 if (mute) 459 snd_soc_write(codec, WM8510_DAC, mute_reg | 0x40); 460 else 461 snd_soc_write(codec, WM8510_DAC, mute_reg); 462 return 0; 463} 464 465/* liam need to make this lower power with dapm */ 466static int wm8510_set_bias_level(struct snd_soc_codec *codec, 467 enum snd_soc_bias_level level) 468{ 469 u16 power1 = snd_soc_read(codec, WM8510_POWER1) & ~0x3; 470 471 switch (level) { 472 case SND_SOC_BIAS_ON: 473 case SND_SOC_BIAS_PREPARE: 474 power1 |= 0x1; /* VMID 50k */ 475 snd_soc_write(codec, WM8510_POWER1, power1); 476 break; 477 478 case SND_SOC_BIAS_STANDBY: 479 power1 |= WM8510_POWER1_BIASEN | WM8510_POWER1_BUFIOEN; 480 481 if (codec->bias_level == SND_SOC_BIAS_OFF) { 482 /* Initial cap charge at VMID 5k */ 483 snd_soc_write(codec, WM8510_POWER1, power1 | 0x3); 484 mdelay(100); 485 } 486 487 power1 |= 0x2; /* VMID 500k */ 488 snd_soc_write(codec, WM8510_POWER1, power1); 489 break; 490 491 case SND_SOC_BIAS_OFF: 492 snd_soc_write(codec, WM8510_POWER1, 0); 493 snd_soc_write(codec, WM8510_POWER2, 0); 494 snd_soc_write(codec, WM8510_POWER3, 0); 495 break; 496 } 497 498 codec->bias_level = level; 499 return 0; 500} 501 502#define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 503 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ 504 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) 505 506#define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 507 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 508 509static struct snd_soc_dai_ops wm8510_dai_ops = { 510 .hw_params = wm8510_pcm_hw_params, 511 .digital_mute = wm8510_mute, 512 .set_fmt = wm8510_set_dai_fmt, 513 .set_clkdiv = wm8510_set_dai_clkdiv, 514 .set_pll = wm8510_set_dai_pll, 515}; 516 517struct snd_soc_dai wm8510_dai = { 518 .name = "WM8510 HiFi", 519 .playback = { 520 .stream_name = "Playback", 521 .channels_min = 2, 522 .channels_max = 2, 523 .rates = WM8510_RATES, 524 .formats = WM8510_FORMATS,}, 525 .capture = { 526 .stream_name = "Capture", 527 .channels_min = 2, 528 .channels_max = 2, 529 .rates = WM8510_RATES, 530 .formats = WM8510_FORMATS,}, 531 .ops = &wm8510_dai_ops, 532 .symmetric_rates = 1, 533}; 534EXPORT_SYMBOL_GPL(wm8510_dai); 535 536static int wm8510_suspend(struct platform_device *pdev, pm_message_t state) 537{ 538 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 539 struct snd_soc_codec *codec = socdev->card->codec; 540 541 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 542 return 0; 543} 544 545static int wm8510_resume(struct platform_device *pdev) 546{ 547 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 548 struct snd_soc_codec *codec = socdev->card->codec; 549 int i; 550 u8 data[2]; 551 u16 *cache = codec->reg_cache; 552 553 /* Sync reg_cache with the hardware */ 554 for (i = 0; i < ARRAY_SIZE(wm8510_reg); i++) { 555 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 556 data[1] = cache[i] & 0x00ff; 557 codec->hw_write(codec->control_data, data, 2); 558 } 559 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 560 561 return 0; 562} 563 564/* 565 * initialise the WM8510 driver 566 * register the mixer and dsp interfaces with the kernel 567 */ 568static int wm8510_init(struct snd_soc_device *socdev, 569 enum snd_soc_control_type control) 570{ 571 struct snd_soc_codec *codec = socdev->card->codec; 572 int ret = 0; 573 574 codec->name = "WM8510"; 575 codec->owner = THIS_MODULE; 576 codec->set_bias_level = wm8510_set_bias_level; 577 codec->dai = &wm8510_dai; 578 codec->num_dai = 1; 579 codec->reg_cache_size = ARRAY_SIZE(wm8510_reg); 580 codec->reg_cache = kmemdup(wm8510_reg, sizeof(wm8510_reg), GFP_KERNEL); 581 582 if (codec->reg_cache == NULL) 583 return -ENOMEM; 584 585 ret = snd_soc_codec_set_cache_io(codec, 7, 9, control); 586 if (ret < 0) { 587 printk(KERN_ERR "wm8510: failed to set cache I/O: %d\n", 588 ret); 589 goto err; 590 } 591 592 wm8510_reset(codec); 593 594 /* register pcms */ 595 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 596 if (ret < 0) { 597 printk(KERN_ERR "wm8510: failed to create pcms\n"); 598 goto err; 599 } 600 601 /* power on device */ 602 codec->bias_level = SND_SOC_BIAS_OFF; 603 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 604 snd_soc_add_controls(codec, wm8510_snd_controls, 605 ARRAY_SIZE(wm8510_snd_controls)); 606 wm8510_add_widgets(codec); 607 608 return ret; 609 610err: 611 kfree(codec->reg_cache); 612 return ret; 613} 614 615static struct snd_soc_device *wm8510_socdev; 616 617#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 618 619/* 620 * WM8510 2 wire address is 0x1a 621 */ 622 623static int wm8510_i2c_probe(struct i2c_client *i2c, 624 const struct i2c_device_id *id) 625{ 626 struct snd_soc_device *socdev = wm8510_socdev; 627 struct snd_soc_codec *codec = socdev->card->codec; 628 int ret; 629 630 i2c_set_clientdata(i2c, codec); 631 codec->control_data = i2c; 632 633 ret = wm8510_init(socdev, SND_SOC_I2C); 634 if (ret < 0) 635 pr_err("failed to initialise WM8510\n"); 636 637 return ret; 638} 639 640static int wm8510_i2c_remove(struct i2c_client *client) 641{ 642 struct snd_soc_codec *codec = i2c_get_clientdata(client); 643 kfree(codec->reg_cache); 644 return 0; 645} 646 647static const struct i2c_device_id wm8510_i2c_id[] = { 648 { "wm8510", 0 }, 649 { } 650}; 651MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id); 652 653static struct i2c_driver wm8510_i2c_driver = { 654 .driver = { 655 .name = "WM8510 I2C Codec", 656 .owner = THIS_MODULE, 657 }, 658 .probe = wm8510_i2c_probe, 659 .remove = wm8510_i2c_remove, 660 .id_table = wm8510_i2c_id, 661}; 662 663static int wm8510_add_i2c_device(struct platform_device *pdev, 664 const struct wm8510_setup_data *setup) 665{ 666 struct i2c_board_info info; 667 struct i2c_adapter *adapter; 668 struct i2c_client *client; 669 int ret; 670 671 ret = i2c_add_driver(&wm8510_i2c_driver); 672 if (ret != 0) { 673 dev_err(&pdev->dev, "can't add i2c driver\n"); 674 return ret; 675 } 676 677 memset(&info, 0, sizeof(struct i2c_board_info)); 678 info.addr = setup->i2c_address; 679 strlcpy(info.type, "wm8510", I2C_NAME_SIZE); 680 681 adapter = i2c_get_adapter(setup->i2c_bus); 682 if (!adapter) { 683 dev_err(&pdev->dev, "can't get i2c adapter %d\n", 684 setup->i2c_bus); 685 goto err_driver; 686 } 687 688 client = i2c_new_device(adapter, &info); 689 i2c_put_adapter(adapter); 690 if (!client) { 691 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", 692 (unsigned int)info.addr); 693 goto err_driver; 694 } 695 696 return 0; 697 698err_driver: 699 i2c_del_driver(&wm8510_i2c_driver); 700 return -ENODEV; 701} 702#endif 703 704#if defined(CONFIG_SPI_MASTER) 705static int __devinit wm8510_spi_probe(struct spi_device *spi) 706{ 707 struct snd_soc_device *socdev = wm8510_socdev; 708 struct snd_soc_codec *codec = socdev->card->codec; 709 int ret; 710 711 codec->control_data = spi; 712 713 ret = wm8510_init(socdev, SND_SOC_SPI); 714 if (ret < 0) 715 dev_err(&spi->dev, "failed to initialise WM8510\n"); 716 717 return ret; 718} 719 720static int __devexit wm8510_spi_remove(struct spi_device *spi) 721{ 722 return 0; 723} 724 725static struct spi_driver wm8510_spi_driver = { 726 .driver = { 727 .name = "wm8510", 728 .bus = &spi_bus_type, 729 .owner = THIS_MODULE, 730 }, 731 .probe = wm8510_spi_probe, 732 .remove = __devexit_p(wm8510_spi_remove), 733}; 734#endif /* CONFIG_SPI_MASTER */ 735 736static int wm8510_probe(struct platform_device *pdev) 737{ 738 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 739 struct wm8510_setup_data *setup; 740 struct snd_soc_codec *codec; 741 int ret = 0; 742 743 pr_info("WM8510 Audio Codec %s", WM8510_VERSION); 744 745 setup = socdev->codec_data; 746 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 747 if (codec == NULL) 748 return -ENOMEM; 749 750 socdev->card->codec = codec; 751 mutex_init(&codec->mutex); 752 INIT_LIST_HEAD(&codec->dapm_widgets); 753 INIT_LIST_HEAD(&codec->dapm_paths); 754 755 wm8510_socdev = socdev; 756#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 757 if (setup->i2c_address) { 758 ret = wm8510_add_i2c_device(pdev, setup); 759 } 760#endif 761#if defined(CONFIG_SPI_MASTER) 762 if (setup->spi) { 763 ret = spi_register_driver(&wm8510_spi_driver); 764 if (ret != 0) 765 printk(KERN_ERR "can't add spi driver"); 766 } 767#endif 768 769 if (ret != 0) 770 kfree(codec); 771 return ret; 772} 773 774/* power down chip */ 775static int wm8510_remove(struct platform_device *pdev) 776{ 777 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 778 struct snd_soc_codec *codec = socdev->card->codec; 779 780 if (codec->control_data) 781 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 782 783 snd_soc_free_pcms(socdev); 784 snd_soc_dapm_free(socdev); 785#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 786 i2c_unregister_device(codec->control_data); 787 i2c_del_driver(&wm8510_i2c_driver); 788#endif 789#if defined(CONFIG_SPI_MASTER) 790 spi_unregister_driver(&wm8510_spi_driver); 791#endif 792 kfree(codec); 793 794 return 0; 795} 796 797struct snd_soc_codec_device soc_codec_dev_wm8510 = { 798 .probe = wm8510_probe, 799 .remove = wm8510_remove, 800 .suspend = wm8510_suspend, 801 .resume = wm8510_resume, 802}; 803EXPORT_SYMBOL_GPL(soc_codec_dev_wm8510); 804 805static int __init wm8510_modinit(void) 806{ 807 return snd_soc_register_dai(&wm8510_dai); 808} 809module_init(wm8510_modinit); 810 811static void __exit wm8510_exit(void) 812{ 813 snd_soc_unregister_dai(&wm8510_dai); 814} 815module_exit(wm8510_exit); 816 817MODULE_DESCRIPTION("ASoC WM8510 driver"); 818MODULE_AUTHOR("Liam Girdwood"); 819MODULE_LICENSE("GPL"); 820