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 33 struct 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 */ 40 static 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 /* 62 * read wm8510 register cache 63 */ 64 static inline unsigned int wm8510_read_reg_cache(struct snd_soc_codec *codec, 65 unsigned int reg) 66 { 67 u16 *cache = codec->reg_cache; 68 if (reg == WM8510_RESET) 69 return 0; 70 if (reg >= WM8510_CACHEREGNUM) 71 return -1; 72 return cache[reg]; 73 } 74 75 /* 76 * write wm8510 register cache 77 */ 78 static inline void wm8510_write_reg_cache(struct snd_soc_codec *codec, 79 u16 reg, unsigned int value) 80 { 81 u16 *cache = codec->reg_cache; 82 if (reg >= WM8510_CACHEREGNUM) 83 return; 84 cache[reg] = value; 85 } 86 87 /* 88 * write to the WM8510 register space 89 */ 90 static int wm8510_write(struct snd_soc_codec *codec, unsigned int reg, 91 unsigned int value) 92 { 93 u8 data[2]; 94 95 /* data is 96 * D15..D9 WM8510 register offset 97 * D8...D0 register data 98 */ 99 data[0] = (reg << 1) | ((value >> 8) & 0x0001); 100 data[1] = value & 0x00ff; 101 102 wm8510_write_reg_cache(codec, reg, value); 103 if (codec->hw_write(codec->control_data, data, 2) == 2) 104 return 0; 105 else 106 return -EIO; 107 } 108 109 #define wm8510_reset(c) wm8510_write(c, WM8510_RESET, 0) 110 111 static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" }; 112 static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; 113 static const char *wm8510_alc[] = { "ALC", "Limiter" }; 114 115 static const struct soc_enum wm8510_enum[] = { 116 SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */ 117 SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */ 118 SOC_ENUM_SINGLE(WM8510_DAC, 4, 4, wm8510_deemp), 119 SOC_ENUM_SINGLE(WM8510_ALC3, 8, 2, wm8510_alc), 120 }; 121 122 static const struct snd_kcontrol_new wm8510_snd_controls[] = { 123 124 SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0), 125 126 SOC_ENUM("DAC Companding", wm8510_enum[1]), 127 SOC_ENUM("ADC Companding", wm8510_enum[0]), 128 129 SOC_ENUM("Playback De-emphasis", wm8510_enum[2]), 130 SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0), 131 132 SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0), 133 134 SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0), 135 SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0), 136 SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0), 137 138 SOC_SINGLE("Capture Volume", WM8510_ADCVOL, 0, 127, 0), 139 140 SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1, 8, 1, 0), 141 SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1, 4, 15, 0), 142 SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1, 0, 15, 0), 143 144 SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2, 4, 7, 0), 145 SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2, 0, 15, 0), 146 147 SOC_SINGLE("ALC Enable Switch", WM8510_ALC1, 8, 1, 0), 148 SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1, 3, 7, 0), 149 SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1, 0, 7, 0), 150 151 SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2, 8, 1, 0), 152 SOC_SINGLE("ALC Capture Hold", WM8510_ALC2, 4, 7, 0), 153 SOC_SINGLE("ALC Capture Target", WM8510_ALC2, 0, 15, 0), 154 155 SOC_ENUM("ALC Capture Mode", wm8510_enum[3]), 156 SOC_SINGLE("ALC Capture Decay", WM8510_ALC3, 4, 15, 0), 157 SOC_SINGLE("ALC Capture Attack", WM8510_ALC3, 0, 15, 0), 158 159 SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE, 3, 1, 0), 160 SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE, 0, 7, 0), 161 162 SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA, 7, 1, 0), 163 SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA, 0, 63, 0), 164 165 SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL, 7, 1, 0), 166 SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL, 6, 1, 1), 167 SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL, 0, 63, 0), 168 SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0), 169 170 SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST, 8, 1, 0), 171 SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1), 172 }; 173 174 /* add non dapm controls */ 175 static int wm8510_add_controls(struct snd_soc_codec *codec) 176 { 177 int err, i; 178 179 for (i = 0; i < ARRAY_SIZE(wm8510_snd_controls); i++) { 180 err = snd_ctl_add(codec->card, 181 snd_soc_cnew(&wm8510_snd_controls[i], codec, 182 NULL)); 183 if (err < 0) 184 return err; 185 } 186 187 return 0; 188 } 189 190 /* Speaker Output Mixer */ 191 static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = { 192 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0), 193 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0), 194 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0), 195 }; 196 197 /* Mono Output Mixer */ 198 static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = { 199 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0), 200 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0), 201 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0), 202 }; 203 204 static const struct snd_kcontrol_new wm8510_boost_controls[] = { 205 SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA, 6, 1, 1), 206 SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0), 207 SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0), 208 }; 209 210 static const struct snd_kcontrol_new wm8510_micpga_controls[] = { 211 SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0), 212 SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0), 213 SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0), 214 }; 215 216 static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = { 217 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0, 218 &wm8510_speaker_mixer_controls[0], 219 ARRAY_SIZE(wm8510_speaker_mixer_controls)), 220 SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0, 221 &wm8510_mono_mixer_controls[0], 222 ARRAY_SIZE(wm8510_mono_mixer_controls)), 223 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0), 224 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0), 225 SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0), 226 SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0), 227 SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0), 228 SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0), 229 230 SND_SOC_DAPM_MIXER("Mic PGA", WM8510_POWER2, 2, 0, 231 &wm8510_micpga_controls[0], 232 ARRAY_SIZE(wm8510_micpga_controls)), 233 SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0, 234 &wm8510_boost_controls[0], 235 ARRAY_SIZE(wm8510_boost_controls)), 236 237 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0), 238 239 SND_SOC_DAPM_INPUT("MICN"), 240 SND_SOC_DAPM_INPUT("MICP"), 241 SND_SOC_DAPM_INPUT("AUX"), 242 SND_SOC_DAPM_OUTPUT("MONOOUT"), 243 SND_SOC_DAPM_OUTPUT("SPKOUTP"), 244 SND_SOC_DAPM_OUTPUT("SPKOUTN"), 245 }; 246 247 static const struct snd_soc_dapm_route audio_map[] = { 248 /* Mono output mixer */ 249 {"Mono Mixer", "PCM Playback Switch", "DAC"}, 250 {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, 251 {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, 252 253 /* Speaker output mixer */ 254 {"Speaker Mixer", "PCM Playback Switch", "DAC"}, 255 {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, 256 {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, 257 258 /* Outputs */ 259 {"Mono Out", NULL, "Mono Mixer"}, 260 {"MONOOUT", NULL, "Mono Out"}, 261 {"SpkN Out", NULL, "Speaker Mixer"}, 262 {"SpkP Out", NULL, "Speaker Mixer"}, 263 {"SPKOUTN", NULL, "SpkN Out"}, 264 {"SPKOUTP", NULL, "SpkP Out"}, 265 266 /* Microphone PGA */ 267 {"Mic PGA", "MICN Switch", "MICN"}, 268 {"Mic PGA", "MICP Switch", "MICP"}, 269 { "Mic PGA", "AUX Switch", "Aux Input" }, 270 271 /* Boost Mixer */ 272 {"Boost Mixer", "Mic PGA Switch", "Mic PGA"}, 273 {"Boost Mixer", "Mic Volume", "MICP"}, 274 {"Boost Mixer", "Aux Volume", "Aux Input"}, 275 276 {"ADC", NULL, "Boost Mixer"}, 277 }; 278 279 static int wm8510_add_widgets(struct snd_soc_codec *codec) 280 { 281 snd_soc_dapm_new_controls(codec, wm8510_dapm_widgets, 282 ARRAY_SIZE(wm8510_dapm_widgets)); 283 284 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 285 286 snd_soc_dapm_new_widgets(codec); 287 return 0; 288 } 289 290 struct pll_ { 291 unsigned int pre_div:4; /* prescale - 1 */ 292 unsigned int n:4; 293 unsigned int k; 294 }; 295 296 static struct pll_ pll_div; 297 298 /* The size in bits of the pll divide multiplied by 10 299 * to allow rounding later */ 300 #define FIXED_PLL_SIZE ((1 << 24) * 10) 301 302 static void pll_factors(unsigned int target, unsigned int source) 303 { 304 unsigned long long Kpart; 305 unsigned int K, Ndiv, Nmod; 306 307 Ndiv = target / source; 308 if (Ndiv < 6) { 309 source >>= 1; 310 pll_div.pre_div = 1; 311 Ndiv = target / source; 312 } else 313 pll_div.pre_div = 0; 314 315 if ((Ndiv < 6) || (Ndiv > 12)) 316 printk(KERN_WARNING 317 "WM8510 N value %d outwith recommended range!d\n", 318 Ndiv); 319 320 pll_div.n = Ndiv; 321 Nmod = target % source; 322 Kpart = FIXED_PLL_SIZE * (long long)Nmod; 323 324 do_div(Kpart, source); 325 326 K = Kpart & 0xFFFFFFFF; 327 328 /* Check if we need to round */ 329 if ((K % 10) >= 5) 330 K += 5; 331 332 /* Move down to proper range now rounding is done */ 333 K /= 10; 334 335 pll_div.k = K; 336 } 337 338 static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai, 339 int pll_id, unsigned int freq_in, unsigned int freq_out) 340 { 341 struct snd_soc_codec *codec = codec_dai->codec; 342 u16 reg; 343 344 if (freq_in == 0 || freq_out == 0) { 345 /* Clock CODEC directly from MCLK */ 346 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK); 347 wm8510_write(codec, WM8510_CLOCK, reg & 0x0ff); 348 349 /* Turn off PLL */ 350 reg = wm8510_read_reg_cache(codec, WM8510_POWER1); 351 wm8510_write(codec, WM8510_POWER1, reg & 0x1df); 352 return 0; 353 } 354 355 pll_factors(freq_out*8, freq_in); 356 357 wm8510_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n); 358 wm8510_write(codec, WM8510_PLLK1, pll_div.k >> 18); 359 wm8510_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff); 360 wm8510_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff); 361 reg = wm8510_read_reg_cache(codec, WM8510_POWER1); 362 wm8510_write(codec, WM8510_POWER1, reg | 0x020); 363 364 /* Run CODEC from PLL instead of MCLK */ 365 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK); 366 wm8510_write(codec, WM8510_CLOCK, reg | 0x100); 367 368 return 0; 369 } 370 371 /* 372 * Configure WM8510 clock dividers. 373 */ 374 static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 375 int div_id, int div) 376 { 377 struct snd_soc_codec *codec = codec_dai->codec; 378 u16 reg; 379 380 switch (div_id) { 381 case WM8510_OPCLKDIV: 382 reg = wm8510_read_reg_cache(codec, WM8510_GPIO) & 0x1cf; 383 wm8510_write(codec, WM8510_GPIO, reg | div); 384 break; 385 case WM8510_MCLKDIV: 386 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1f; 387 wm8510_write(codec, WM8510_CLOCK, reg | div); 388 break; 389 case WM8510_ADCCLK: 390 reg = wm8510_read_reg_cache(codec, WM8510_ADC) & 0x1f7; 391 wm8510_write(codec, WM8510_ADC, reg | div); 392 break; 393 case WM8510_DACCLK: 394 reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0x1f7; 395 wm8510_write(codec, WM8510_DAC, reg | div); 396 break; 397 case WM8510_BCLKDIV: 398 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1e3; 399 wm8510_write(codec, WM8510_CLOCK, reg | div); 400 break; 401 default: 402 return -EINVAL; 403 } 404 405 return 0; 406 } 407 408 static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai, 409 unsigned int fmt) 410 { 411 struct snd_soc_codec *codec = codec_dai->codec; 412 u16 iface = 0; 413 u16 clk = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1fe; 414 415 /* set master/slave audio interface */ 416 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 417 case SND_SOC_DAIFMT_CBM_CFM: 418 clk |= 0x0001; 419 break; 420 case SND_SOC_DAIFMT_CBS_CFS: 421 break; 422 default: 423 return -EINVAL; 424 } 425 426 /* interface format */ 427 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 428 case SND_SOC_DAIFMT_I2S: 429 iface |= 0x0010; 430 break; 431 case SND_SOC_DAIFMT_RIGHT_J: 432 break; 433 case SND_SOC_DAIFMT_LEFT_J: 434 iface |= 0x0008; 435 break; 436 case SND_SOC_DAIFMT_DSP_A: 437 iface |= 0x00018; 438 break; 439 default: 440 return -EINVAL; 441 } 442 443 /* clock inversion */ 444 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 445 case SND_SOC_DAIFMT_NB_NF: 446 break; 447 case SND_SOC_DAIFMT_IB_IF: 448 iface |= 0x0180; 449 break; 450 case SND_SOC_DAIFMT_IB_NF: 451 iface |= 0x0100; 452 break; 453 case SND_SOC_DAIFMT_NB_IF: 454 iface |= 0x0080; 455 break; 456 default: 457 return -EINVAL; 458 } 459 460 wm8510_write(codec, WM8510_IFACE, iface); 461 wm8510_write(codec, WM8510_CLOCK, clk); 462 return 0; 463 } 464 465 static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream, 466 struct snd_pcm_hw_params *params) 467 { 468 struct snd_soc_pcm_runtime *rtd = substream->private_data; 469 struct snd_soc_device *socdev = rtd->socdev; 470 struct snd_soc_codec *codec = socdev->codec; 471 u16 iface = wm8510_read_reg_cache(codec, WM8510_IFACE) & 0x19f; 472 u16 adn = wm8510_read_reg_cache(codec, WM8510_ADD) & 0x1f1; 473 474 /* bit size */ 475 switch (params_format(params)) { 476 case SNDRV_PCM_FORMAT_S16_LE: 477 break; 478 case SNDRV_PCM_FORMAT_S20_3LE: 479 iface |= 0x0020; 480 break; 481 case SNDRV_PCM_FORMAT_S24_LE: 482 iface |= 0x0040; 483 break; 484 case SNDRV_PCM_FORMAT_S32_LE: 485 iface |= 0x0060; 486 break; 487 } 488 489 /* filter coefficient */ 490 switch (params_rate(params)) { 491 case SNDRV_PCM_RATE_8000: 492 adn |= 0x5 << 1; 493 break; 494 case SNDRV_PCM_RATE_11025: 495 adn |= 0x4 << 1; 496 break; 497 case SNDRV_PCM_RATE_16000: 498 adn |= 0x3 << 1; 499 break; 500 case SNDRV_PCM_RATE_22050: 501 adn |= 0x2 << 1; 502 break; 503 case SNDRV_PCM_RATE_32000: 504 adn |= 0x1 << 1; 505 break; 506 case SNDRV_PCM_RATE_44100: 507 case SNDRV_PCM_RATE_48000: 508 break; 509 } 510 511 wm8510_write(codec, WM8510_IFACE, iface); 512 wm8510_write(codec, WM8510_ADD, adn); 513 return 0; 514 } 515 516 static int wm8510_mute(struct snd_soc_dai *dai, int mute) 517 { 518 struct snd_soc_codec *codec = dai->codec; 519 u16 mute_reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0xffbf; 520 521 if (mute) 522 wm8510_write(codec, WM8510_DAC, mute_reg | 0x40); 523 else 524 wm8510_write(codec, WM8510_DAC, mute_reg); 525 return 0; 526 } 527 528 /* liam need to make this lower power with dapm */ 529 static int wm8510_set_bias_level(struct snd_soc_codec *codec, 530 enum snd_soc_bias_level level) 531 { 532 u16 power1 = wm8510_read_reg_cache(codec, WM8510_POWER1) & ~0x3; 533 534 switch (level) { 535 case SND_SOC_BIAS_ON: 536 case SND_SOC_BIAS_PREPARE: 537 power1 |= 0x1; /* VMID 50k */ 538 wm8510_write(codec, WM8510_POWER1, power1); 539 break; 540 541 case SND_SOC_BIAS_STANDBY: 542 power1 |= WM8510_POWER1_BIASEN | WM8510_POWER1_BUFIOEN; 543 544 if (codec->bias_level == SND_SOC_BIAS_OFF) { 545 /* Initial cap charge at VMID 5k */ 546 wm8510_write(codec, WM8510_POWER1, power1 | 0x3); 547 mdelay(100); 548 } 549 550 power1 |= 0x2; /* VMID 500k */ 551 wm8510_write(codec, WM8510_POWER1, power1); 552 break; 553 554 case SND_SOC_BIAS_OFF: 555 wm8510_write(codec, WM8510_POWER1, 0); 556 wm8510_write(codec, WM8510_POWER2, 0); 557 wm8510_write(codec, WM8510_POWER3, 0); 558 break; 559 } 560 561 codec->bias_level = level; 562 return 0; 563 } 564 565 #define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 566 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ 567 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) 568 569 #define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 570 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 571 572 struct snd_soc_dai wm8510_dai = { 573 .name = "WM8510 HiFi", 574 .playback = { 575 .stream_name = "Playback", 576 .channels_min = 2, 577 .channels_max = 2, 578 .rates = WM8510_RATES, 579 .formats = WM8510_FORMATS,}, 580 .capture = { 581 .stream_name = "Capture", 582 .channels_min = 2, 583 .channels_max = 2, 584 .rates = WM8510_RATES, 585 .formats = WM8510_FORMATS,}, 586 .ops = { 587 .hw_params = wm8510_pcm_hw_params, 588 }, 589 .dai_ops = { 590 .digital_mute = wm8510_mute, 591 .set_fmt = wm8510_set_dai_fmt, 592 .set_clkdiv = wm8510_set_dai_clkdiv, 593 .set_pll = wm8510_set_dai_pll, 594 }, 595 }; 596 EXPORT_SYMBOL_GPL(wm8510_dai); 597 598 static int wm8510_suspend(struct platform_device *pdev, pm_message_t state) 599 { 600 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 601 struct snd_soc_codec *codec = socdev->codec; 602 603 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 604 return 0; 605 } 606 607 static int wm8510_resume(struct platform_device *pdev) 608 { 609 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 610 struct snd_soc_codec *codec = socdev->codec; 611 int i; 612 u8 data[2]; 613 u16 *cache = codec->reg_cache; 614 615 /* Sync reg_cache with the hardware */ 616 for (i = 0; i < ARRAY_SIZE(wm8510_reg); i++) { 617 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 618 data[1] = cache[i] & 0x00ff; 619 codec->hw_write(codec->control_data, data, 2); 620 } 621 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 622 wm8510_set_bias_level(codec, codec->suspend_bias_level); 623 return 0; 624 } 625 626 /* 627 * initialise the WM8510 driver 628 * register the mixer and dsp interfaces with the kernel 629 */ 630 static int wm8510_init(struct snd_soc_device *socdev) 631 { 632 struct snd_soc_codec *codec = socdev->codec; 633 int ret = 0; 634 635 codec->name = "WM8510"; 636 codec->owner = THIS_MODULE; 637 codec->read = wm8510_read_reg_cache; 638 codec->write = wm8510_write; 639 codec->set_bias_level = wm8510_set_bias_level; 640 codec->dai = &wm8510_dai; 641 codec->num_dai = 1; 642 codec->reg_cache_size = ARRAY_SIZE(wm8510_reg); 643 codec->reg_cache = kmemdup(wm8510_reg, sizeof(wm8510_reg), GFP_KERNEL); 644 645 if (codec->reg_cache == NULL) 646 return -ENOMEM; 647 648 wm8510_reset(codec); 649 650 /* register pcms */ 651 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 652 if (ret < 0) { 653 printk(KERN_ERR "wm8510: failed to create pcms\n"); 654 goto pcm_err; 655 } 656 657 /* power on device */ 658 codec->bias_level = SND_SOC_BIAS_OFF; 659 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 660 wm8510_add_controls(codec); 661 wm8510_add_widgets(codec); 662 ret = snd_soc_register_card(socdev); 663 if (ret < 0) { 664 printk(KERN_ERR "wm8510: failed to register card\n"); 665 goto card_err; 666 } 667 return ret; 668 669 card_err: 670 snd_soc_free_pcms(socdev); 671 snd_soc_dapm_free(socdev); 672 pcm_err: 673 kfree(codec->reg_cache); 674 return ret; 675 } 676 677 static struct snd_soc_device *wm8510_socdev; 678 679 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 680 681 /* 682 * WM8510 2 wire address is 0x1a 683 */ 684 685 static int wm8510_i2c_probe(struct i2c_client *i2c, 686 const struct i2c_device_id *id) 687 { 688 struct snd_soc_device *socdev = wm8510_socdev; 689 struct snd_soc_codec *codec = socdev->codec; 690 int ret; 691 692 i2c_set_clientdata(i2c, codec); 693 codec->control_data = i2c; 694 695 ret = wm8510_init(socdev); 696 if (ret < 0) 697 pr_err("failed to initialise WM8510\n"); 698 699 return ret; 700 } 701 702 static int wm8510_i2c_remove(struct i2c_client *client) 703 { 704 struct snd_soc_codec *codec = i2c_get_clientdata(client); 705 kfree(codec->reg_cache); 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 I2C Codec", 718 .owner = THIS_MODULE, 719 }, 720 .probe = wm8510_i2c_probe, 721 .remove = wm8510_i2c_remove, 722 .id_table = wm8510_i2c_id, 723 }; 724 725 static int wm8510_add_i2c_device(struct platform_device *pdev, 726 const struct wm8510_setup_data *setup) 727 { 728 struct i2c_board_info info; 729 struct i2c_adapter *adapter; 730 struct i2c_client *client; 731 int ret; 732 733 ret = i2c_add_driver(&wm8510_i2c_driver); 734 if (ret != 0) { 735 dev_err(&pdev->dev, "can't add i2c driver\n"); 736 return ret; 737 } 738 739 memset(&info, 0, sizeof(struct i2c_board_info)); 740 info.addr = setup->i2c_address; 741 strlcpy(info.type, "wm8510", I2C_NAME_SIZE); 742 743 adapter = i2c_get_adapter(setup->i2c_bus); 744 if (!adapter) { 745 dev_err(&pdev->dev, "can't get i2c adapter %d\n", 746 setup->i2c_bus); 747 goto err_driver; 748 } 749 750 client = i2c_new_device(adapter, &info); 751 i2c_put_adapter(adapter); 752 if (!client) { 753 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", 754 (unsigned int)info.addr); 755 goto err_driver; 756 } 757 758 return 0; 759 760 err_driver: 761 i2c_del_driver(&wm8510_i2c_driver); 762 return -ENODEV; 763 } 764 #endif 765 766 #if defined(CONFIG_SPI_MASTER) 767 static int __devinit wm8510_spi_probe(struct spi_device *spi) 768 { 769 struct snd_soc_device *socdev = wm8510_socdev; 770 struct snd_soc_codec *codec = socdev->codec; 771 int ret; 772 773 codec->control_data = spi; 774 775 ret = wm8510_init(socdev); 776 if (ret < 0) 777 dev_err(&spi->dev, "failed to initialise WM8510\n"); 778 779 return ret; 780 } 781 782 static int __devexit wm8510_spi_remove(struct spi_device *spi) 783 { 784 return 0; 785 } 786 787 static struct spi_driver wm8510_spi_driver = { 788 .driver = { 789 .name = "wm8510", 790 .bus = &spi_bus_type, 791 .owner = THIS_MODULE, 792 }, 793 .probe = wm8510_spi_probe, 794 .remove = __devexit_p(wm8510_spi_remove), 795 }; 796 797 static int wm8510_spi_write(struct spi_device *spi, const char *data, int len) 798 { 799 struct spi_transfer t; 800 struct spi_message m; 801 u8 msg[2]; 802 803 if (len <= 0) 804 return 0; 805 806 msg[0] = data[0]; 807 msg[1] = data[1]; 808 809 spi_message_init(&m); 810 memset(&t, 0, (sizeof t)); 811 812 t.tx_buf = &msg[0]; 813 t.len = len; 814 815 spi_message_add_tail(&t, &m); 816 spi_sync(spi, &m); 817 818 return len; 819 } 820 #endif /* CONFIG_SPI_MASTER */ 821 822 static int wm8510_probe(struct platform_device *pdev) 823 { 824 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 825 struct wm8510_setup_data *setup; 826 struct snd_soc_codec *codec; 827 int ret = 0; 828 829 pr_info("WM8510 Audio Codec %s", WM8510_VERSION); 830 831 setup = socdev->codec_data; 832 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 833 if (codec == NULL) 834 return -ENOMEM; 835 836 socdev->codec = codec; 837 mutex_init(&codec->mutex); 838 INIT_LIST_HEAD(&codec->dapm_widgets); 839 INIT_LIST_HEAD(&codec->dapm_paths); 840 841 wm8510_socdev = socdev; 842 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 843 if (setup->i2c_address) { 844 codec->hw_write = (hw_write_t)i2c_master_send; 845 ret = wm8510_add_i2c_device(pdev, setup); 846 } 847 #endif 848 #if defined(CONFIG_SPI_MASTER) 849 if (setup->spi) { 850 codec->hw_write = (hw_write_t)wm8510_spi_write; 851 ret = spi_register_driver(&wm8510_spi_driver); 852 if (ret != 0) 853 printk(KERN_ERR "can't add spi driver"); 854 } 855 #endif 856 857 if (ret != 0) 858 kfree(codec); 859 return ret; 860 } 861 862 /* power down chip */ 863 static int wm8510_remove(struct platform_device *pdev) 864 { 865 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 866 struct snd_soc_codec *codec = socdev->codec; 867 868 if (codec->control_data) 869 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 870 871 snd_soc_free_pcms(socdev); 872 snd_soc_dapm_free(socdev); 873 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 874 i2c_unregister_device(codec->control_data); 875 i2c_del_driver(&wm8510_i2c_driver); 876 #endif 877 #if defined(CONFIG_SPI_MASTER) 878 spi_unregister_driver(&wm8510_spi_driver); 879 #endif 880 kfree(codec); 881 882 return 0; 883 } 884 885 struct snd_soc_codec_device soc_codec_dev_wm8510 = { 886 .probe = wm8510_probe, 887 .remove = wm8510_remove, 888 .suspend = wm8510_suspend, 889 .resume = wm8510_resume, 890 }; 891 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8510); 892 893 MODULE_DESCRIPTION("ASoC WM8510 driver"); 894 MODULE_AUTHOR("Liam Girdwood"); 895 MODULE_LICENSE("GPL"); 896