1 /* 2 * wm8510.c -- WM8510 ALSA Soc Audio driver 3 * 4 * Copyright 2006 Wolfson Microelectronics PLC. 5 * 6 * Author: Liam Girdwood <liam.girdwood@wolfsonmicro.com> 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 <sound/core.h> 22 #include <sound/pcm.h> 23 #include <sound/pcm_params.h> 24 #include <sound/soc.h> 25 #include <sound/soc-dapm.h> 26 #include <sound/initval.h> 27 28 #include "wm8510.h" 29 30 #define AUDIO_NAME "wm8510" 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 /* 59 * read wm8510 register cache 60 */ 61 static inline unsigned int wm8510_read_reg_cache(struct snd_soc_codec *codec, 62 unsigned int reg) 63 { 64 u16 *cache = codec->reg_cache; 65 if (reg == WM8510_RESET) 66 return 0; 67 if (reg >= WM8510_CACHEREGNUM) 68 return -1; 69 return cache[reg]; 70 } 71 72 /* 73 * write wm8510 register cache 74 */ 75 static inline void wm8510_write_reg_cache(struct snd_soc_codec *codec, 76 u16 reg, unsigned int value) 77 { 78 u16 *cache = codec->reg_cache; 79 if (reg >= WM8510_CACHEREGNUM) 80 return; 81 cache[reg] = value; 82 } 83 84 /* 85 * write to the WM8510 register space 86 */ 87 static int wm8510_write(struct snd_soc_codec *codec, unsigned int reg, 88 unsigned int value) 89 { 90 u8 data[2]; 91 92 /* data is 93 * D15..D9 WM8510 register offset 94 * D8...D0 register data 95 */ 96 data[0] = (reg << 1) | ((value >> 8) & 0x0001); 97 data[1] = value & 0x00ff; 98 99 wm8510_write_reg_cache(codec, reg, value); 100 if (codec->hw_write(codec->control_data, data, 2) == 2) 101 return 0; 102 else 103 return -EIO; 104 } 105 106 #define wm8510_reset(c) wm8510_write(c, WM8510_RESET, 0) 107 108 static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" }; 109 static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; 110 static const char *wm8510_alc[] = { "ALC", "Limiter" }; 111 112 static const struct soc_enum wm8510_enum[] = { 113 SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */ 114 SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */ 115 SOC_ENUM_SINGLE(WM8510_DAC, 4, 4, wm8510_deemp), 116 SOC_ENUM_SINGLE(WM8510_ALC3, 8, 2, wm8510_alc), 117 }; 118 119 static const struct snd_kcontrol_new wm8510_snd_controls[] = { 120 121 SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0), 122 123 SOC_ENUM("DAC Companding", wm8510_enum[1]), 124 SOC_ENUM("ADC Companding", wm8510_enum[0]), 125 126 SOC_ENUM("Playback De-emphasis", wm8510_enum[2]), 127 SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0), 128 129 SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0), 130 131 SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0), 132 SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0), 133 SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0), 134 135 SOC_SINGLE("Capture Volume", WM8510_ADCVOL, 0, 127, 0), 136 137 SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1, 8, 1, 0), 138 SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1, 4, 15, 0), 139 SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1, 0, 15, 0), 140 141 SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2, 4, 7, 0), 142 SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2, 0, 15, 0), 143 144 SOC_SINGLE("ALC Enable Switch", WM8510_ALC1, 8, 1, 0), 145 SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1, 3, 7, 0), 146 SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1, 0, 7, 0), 147 148 SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2, 8, 1, 0), 149 SOC_SINGLE("ALC Capture Hold", WM8510_ALC2, 4, 7, 0), 150 SOC_SINGLE("ALC Capture Target", WM8510_ALC2, 0, 15, 0), 151 152 SOC_ENUM("ALC Capture Mode", wm8510_enum[3]), 153 SOC_SINGLE("ALC Capture Decay", WM8510_ALC3, 4, 15, 0), 154 SOC_SINGLE("ALC Capture Attack", WM8510_ALC3, 0, 15, 0), 155 156 SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE, 3, 1, 0), 157 SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE, 0, 7, 0), 158 159 SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA, 7, 1, 0), 160 SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA, 0, 63, 0), 161 162 SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL, 7, 1, 0), 163 SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL, 6, 1, 1), 164 SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL, 0, 63, 0), 165 SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0), 166 167 SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST, 8, 1, 0), 168 SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1), 169 }; 170 171 /* add non dapm controls */ 172 static int wm8510_add_controls(struct snd_soc_codec *codec) 173 { 174 int err, i; 175 176 for (i = 0; i < ARRAY_SIZE(wm8510_snd_controls); i++) { 177 err = snd_ctl_add(codec->card, 178 snd_soc_cnew(&wm8510_snd_controls[i], codec, 179 NULL)); 180 if (err < 0) 181 return err; 182 } 183 184 return 0; 185 } 186 187 /* Speaker Output Mixer */ 188 static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = { 189 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0), 190 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0), 191 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0), 192 }; 193 194 /* Mono Output Mixer */ 195 static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = { 196 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0), 197 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0), 198 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0), 199 }; 200 201 static const struct snd_kcontrol_new wm8510_boost_controls[] = { 202 SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA, 6, 1, 0), 203 SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0), 204 SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0), 205 }; 206 207 static const struct snd_kcontrol_new wm8510_micpga_controls[] = { 208 SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0), 209 SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0), 210 SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0), 211 }; 212 213 static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = { 214 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0, 215 &wm8510_speaker_mixer_controls[0], 216 ARRAY_SIZE(wm8510_speaker_mixer_controls)), 217 SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0, 218 &wm8510_mono_mixer_controls[0], 219 ARRAY_SIZE(wm8510_mono_mixer_controls)), 220 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0), 221 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0), 222 SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0), 223 SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0), 224 SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0), 225 SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0), 226 227 SND_SOC_DAPM_PGA("Mic PGA", WM8510_POWER2, 2, 0, 228 &wm8510_micpga_controls[0], 229 ARRAY_SIZE(wm8510_micpga_controls)), 230 SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0, 231 &wm8510_boost_controls[0], 232 ARRAY_SIZE(wm8510_boost_controls)), 233 234 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0), 235 236 SND_SOC_DAPM_INPUT("MICN"), 237 SND_SOC_DAPM_INPUT("MICP"), 238 SND_SOC_DAPM_INPUT("AUX"), 239 SND_SOC_DAPM_OUTPUT("MONOOUT"), 240 SND_SOC_DAPM_OUTPUT("SPKOUTP"), 241 SND_SOC_DAPM_OUTPUT("SPKOUTN"), 242 }; 243 244 static const struct snd_soc_dapm_route audio_map[] = { 245 /* Mono output mixer */ 246 {"Mono Mixer", "PCM Playback Switch", "DAC"}, 247 {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, 248 {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, 249 250 /* Speaker output mixer */ 251 {"Speaker Mixer", "PCM Playback Switch", "DAC"}, 252 {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, 253 {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, 254 255 /* Outputs */ 256 {"Mono Out", NULL, "Mono Mixer"}, 257 {"MONOOUT", NULL, "Mono Out"}, 258 {"SpkN Out", NULL, "Speaker Mixer"}, 259 {"SpkP Out", NULL, "Speaker Mixer"}, 260 {"SPKOUTN", NULL, "SpkN Out"}, 261 {"SPKOUTP", NULL, "SpkP Out"}, 262 263 /* Microphone PGA */ 264 {"Mic PGA", "MICN Switch", "MICN"}, 265 {"Mic PGA", "MICP Switch", "MICP"}, 266 { "Mic PGA", "AUX Switch", "Aux Input" }, 267 268 /* Boost Mixer */ 269 {"Boost Mixer", "Mic PGA Switch", "Mic PGA"}, 270 {"Boost Mixer", "Mic Volume", "MICP"}, 271 {"Boost Mixer", "Aux Volume", "Aux Input"}, 272 273 {"ADC", NULL, "Boost Mixer"}, 274 }; 275 276 static int wm8510_add_widgets(struct snd_soc_codec *codec) 277 { 278 snd_soc_dapm_new_controls(codec, wm8510_dapm_widgets, 279 ARRAY_SIZE(wm8510_dapm_widgets)); 280 281 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 282 283 snd_soc_dapm_new_widgets(codec); 284 return 0; 285 } 286 287 struct pll_ { 288 unsigned int pre_div:4; /* prescale - 1 */ 289 unsigned int n:4; 290 unsigned int k; 291 }; 292 293 static struct pll_ pll_div; 294 295 /* The size in bits of the pll divide multiplied by 10 296 * to allow rounding later */ 297 #define FIXED_PLL_SIZE ((1 << 24) * 10) 298 299 static void pll_factors(unsigned int target, unsigned int source) 300 { 301 unsigned long long Kpart; 302 unsigned int K, Ndiv, Nmod; 303 304 Ndiv = target / source; 305 if (Ndiv < 6) { 306 source >>= 1; 307 pll_div.pre_div = 1; 308 Ndiv = target / source; 309 } else 310 pll_div.pre_div = 0; 311 312 if ((Ndiv < 6) || (Ndiv > 12)) 313 printk(KERN_WARNING 314 "WM8510 N value %d outwith recommended range!d\n", 315 Ndiv); 316 317 pll_div.n = Ndiv; 318 Nmod = target % source; 319 Kpart = FIXED_PLL_SIZE * (long long)Nmod; 320 321 do_div(Kpart, source); 322 323 K = Kpart & 0xFFFFFFFF; 324 325 /* Check if we need to round */ 326 if ((K % 10) >= 5) 327 K += 5; 328 329 /* Move down to proper range now rounding is done */ 330 K /= 10; 331 332 pll_div.k = K; 333 } 334 335 static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai, 336 int pll_id, unsigned int freq_in, unsigned int freq_out) 337 { 338 struct snd_soc_codec *codec = codec_dai->codec; 339 u16 reg; 340 341 if (freq_in == 0 || freq_out == 0) { 342 /* Clock CODEC directly from MCLK */ 343 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK); 344 wm8510_write(codec, WM8510_CLOCK, reg & 0x0ff); 345 346 /* Turn off PLL */ 347 reg = wm8510_read_reg_cache(codec, WM8510_POWER1); 348 wm8510_write(codec, WM8510_POWER1, reg & 0x1df); 349 return 0; 350 } 351 352 pll_factors(freq_out*8, freq_in); 353 354 wm8510_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n); 355 wm8510_write(codec, WM8510_PLLK1, pll_div.k >> 18); 356 wm8510_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff); 357 wm8510_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff); 358 reg = wm8510_read_reg_cache(codec, WM8510_POWER1); 359 wm8510_write(codec, WM8510_POWER1, reg | 0x020); 360 361 /* Run CODEC from PLL instead of MCLK */ 362 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK); 363 wm8510_write(codec, WM8510_CLOCK, reg | 0x100); 364 365 return 0; 366 } 367 368 /* 369 * Configure WM8510 clock dividers. 370 */ 371 static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 372 int div_id, int div) 373 { 374 struct snd_soc_codec *codec = codec_dai->codec; 375 u16 reg; 376 377 switch (div_id) { 378 case WM8510_OPCLKDIV: 379 reg = wm8510_read_reg_cache(codec, WM8510_GPIO) & 0x1cf; 380 wm8510_write(codec, WM8510_GPIO, reg | div); 381 break; 382 case WM8510_MCLKDIV: 383 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1f; 384 wm8510_write(codec, WM8510_CLOCK, reg | div); 385 break; 386 case WM8510_ADCCLK: 387 reg = wm8510_read_reg_cache(codec, WM8510_ADC) & 0x1f7; 388 wm8510_write(codec, WM8510_ADC, reg | div); 389 break; 390 case WM8510_DACCLK: 391 reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0x1f7; 392 wm8510_write(codec, WM8510_DAC, reg | div); 393 break; 394 case WM8510_BCLKDIV: 395 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1e3; 396 wm8510_write(codec, WM8510_CLOCK, reg | div); 397 break; 398 default: 399 return -EINVAL; 400 } 401 402 return 0; 403 } 404 405 static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai, 406 unsigned int fmt) 407 { 408 struct snd_soc_codec *codec = codec_dai->codec; 409 u16 iface = 0; 410 u16 clk = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1fe; 411 412 /* set master/slave audio interface */ 413 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 414 case SND_SOC_DAIFMT_CBM_CFM: 415 clk |= 0x0001; 416 break; 417 case SND_SOC_DAIFMT_CBS_CFS: 418 break; 419 default: 420 return -EINVAL; 421 } 422 423 /* interface format */ 424 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 425 case SND_SOC_DAIFMT_I2S: 426 iface |= 0x0010; 427 break; 428 case SND_SOC_DAIFMT_RIGHT_J: 429 break; 430 case SND_SOC_DAIFMT_LEFT_J: 431 iface |= 0x0008; 432 break; 433 case SND_SOC_DAIFMT_DSP_A: 434 iface |= 0x00018; 435 break; 436 default: 437 return -EINVAL; 438 } 439 440 /* clock inversion */ 441 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 442 case SND_SOC_DAIFMT_NB_NF: 443 break; 444 case SND_SOC_DAIFMT_IB_IF: 445 iface |= 0x0180; 446 break; 447 case SND_SOC_DAIFMT_IB_NF: 448 iface |= 0x0100; 449 break; 450 case SND_SOC_DAIFMT_NB_IF: 451 iface |= 0x0080; 452 break; 453 default: 454 return -EINVAL; 455 } 456 457 wm8510_write(codec, WM8510_IFACE, iface); 458 wm8510_write(codec, WM8510_CLOCK, clk); 459 return 0; 460 } 461 462 static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream, 463 struct snd_pcm_hw_params *params) 464 { 465 struct snd_soc_pcm_runtime *rtd = substream->private_data; 466 struct snd_soc_device *socdev = rtd->socdev; 467 struct snd_soc_codec *codec = socdev->codec; 468 u16 iface = wm8510_read_reg_cache(codec, WM8510_IFACE) & 0x19f; 469 u16 adn = wm8510_read_reg_cache(codec, WM8510_ADD) & 0x1f1; 470 471 /* bit size */ 472 switch (params_format(params)) { 473 case SNDRV_PCM_FORMAT_S16_LE: 474 break; 475 case SNDRV_PCM_FORMAT_S20_3LE: 476 iface |= 0x0020; 477 break; 478 case SNDRV_PCM_FORMAT_S24_LE: 479 iface |= 0x0040; 480 break; 481 case SNDRV_PCM_FORMAT_S32_LE: 482 iface |= 0x0060; 483 break; 484 } 485 486 /* filter coefficient */ 487 switch (params_rate(params)) { 488 case SNDRV_PCM_RATE_8000: 489 adn |= 0x5 << 1; 490 break; 491 case SNDRV_PCM_RATE_11025: 492 adn |= 0x4 << 1; 493 break; 494 case SNDRV_PCM_RATE_16000: 495 adn |= 0x3 << 1; 496 break; 497 case SNDRV_PCM_RATE_22050: 498 adn |= 0x2 << 1; 499 break; 500 case SNDRV_PCM_RATE_32000: 501 adn |= 0x1 << 1; 502 break; 503 case SNDRV_PCM_RATE_44100: 504 case SNDRV_PCM_RATE_48000: 505 break; 506 } 507 508 wm8510_write(codec, WM8510_IFACE, iface); 509 wm8510_write(codec, WM8510_ADD, adn); 510 return 0; 511 } 512 513 static int wm8510_mute(struct snd_soc_dai *dai, int mute) 514 { 515 struct snd_soc_codec *codec = dai->codec; 516 u16 mute_reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0xffbf; 517 518 if (mute) 519 wm8510_write(codec, WM8510_DAC, mute_reg | 0x40); 520 else 521 wm8510_write(codec, WM8510_DAC, mute_reg); 522 return 0; 523 } 524 525 /* liam need to make this lower power with dapm */ 526 static int wm8510_set_bias_level(struct snd_soc_codec *codec, 527 enum snd_soc_bias_level level) 528 { 529 530 switch (level) { 531 case SND_SOC_BIAS_ON: 532 wm8510_write(codec, WM8510_POWER1, 0x1ff); 533 wm8510_write(codec, WM8510_POWER2, 0x1ff); 534 wm8510_write(codec, WM8510_POWER3, 0x1ff); 535 break; 536 case SND_SOC_BIAS_PREPARE: 537 case SND_SOC_BIAS_STANDBY: 538 break; 539 case SND_SOC_BIAS_OFF: 540 /* everything off, dac mute, inactive */ 541 wm8510_write(codec, WM8510_POWER1, 0x0); 542 wm8510_write(codec, WM8510_POWER2, 0x0); 543 wm8510_write(codec, WM8510_POWER3, 0x0); 544 break; 545 } 546 codec->bias_level = level; 547 return 0; 548 } 549 550 #define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 551 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ 552 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) 553 554 #define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 555 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 556 557 struct snd_soc_dai wm8510_dai = { 558 .name = "WM8510 HiFi", 559 .playback = { 560 .stream_name = "Playback", 561 .channels_min = 2, 562 .channels_max = 2, 563 .rates = WM8510_RATES, 564 .formats = WM8510_FORMATS,}, 565 .capture = { 566 .stream_name = "Capture", 567 .channels_min = 2, 568 .channels_max = 2, 569 .rates = WM8510_RATES, 570 .formats = WM8510_FORMATS,}, 571 .ops = { 572 .hw_params = wm8510_pcm_hw_params, 573 }, 574 .dai_ops = { 575 .digital_mute = wm8510_mute, 576 .set_fmt = wm8510_set_dai_fmt, 577 .set_clkdiv = wm8510_set_dai_clkdiv, 578 .set_pll = wm8510_set_dai_pll, 579 }, 580 }; 581 EXPORT_SYMBOL_GPL(wm8510_dai); 582 583 static int wm8510_suspend(struct platform_device *pdev, pm_message_t state) 584 { 585 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 586 struct snd_soc_codec *codec = socdev->codec; 587 588 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 589 return 0; 590 } 591 592 static int wm8510_resume(struct platform_device *pdev) 593 { 594 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 595 struct snd_soc_codec *codec = socdev->codec; 596 int i; 597 u8 data[2]; 598 u16 *cache = codec->reg_cache; 599 600 /* Sync reg_cache with the hardware */ 601 for (i = 0; i < ARRAY_SIZE(wm8510_reg); i++) { 602 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 603 data[1] = cache[i] & 0x00ff; 604 codec->hw_write(codec->control_data, data, 2); 605 } 606 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 607 wm8510_set_bias_level(codec, codec->suspend_bias_level); 608 return 0; 609 } 610 611 /* 612 * initialise the WM8510 driver 613 * register the mixer and dsp interfaces with the kernel 614 */ 615 static int wm8510_init(struct snd_soc_device *socdev) 616 { 617 struct snd_soc_codec *codec = socdev->codec; 618 int ret = 0; 619 620 codec->name = "WM8510"; 621 codec->owner = THIS_MODULE; 622 codec->read = wm8510_read_reg_cache; 623 codec->write = wm8510_write; 624 codec->set_bias_level = wm8510_set_bias_level; 625 codec->dai = &wm8510_dai; 626 codec->num_dai = 1; 627 codec->reg_cache_size = ARRAY_SIZE(wm8510_reg); 628 codec->reg_cache = kmemdup(wm8510_reg, sizeof(wm8510_reg), GFP_KERNEL); 629 630 if (codec->reg_cache == NULL) 631 return -ENOMEM; 632 633 wm8510_reset(codec); 634 635 /* register pcms */ 636 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 637 if (ret < 0) { 638 printk(KERN_ERR "wm8510: failed to create pcms\n"); 639 goto pcm_err; 640 } 641 642 /* power on device */ 643 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 644 wm8510_add_controls(codec); 645 wm8510_add_widgets(codec); 646 ret = snd_soc_register_card(socdev); 647 if (ret < 0) { 648 printk(KERN_ERR "wm8510: failed to register card\n"); 649 goto card_err; 650 } 651 return ret; 652 653 card_err: 654 snd_soc_free_pcms(socdev); 655 snd_soc_dapm_free(socdev); 656 pcm_err: 657 kfree(codec->reg_cache); 658 return ret; 659 } 660 661 static struct snd_soc_device *wm8510_socdev; 662 663 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 664 665 /* 666 * WM8510 2 wire address is 0x1a 667 */ 668 #define I2C_DRIVERID_WM8510 0xfefe /* liam - need a proper id */ 669 670 static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END }; 671 672 /* Magic definition of all other variables and things */ 673 I2C_CLIENT_INSMOD; 674 675 static struct i2c_driver wm8510_i2c_driver; 676 static struct i2c_client client_template; 677 678 /* If the i2c layer weren't so broken, we could pass this kind of data 679 around */ 680 681 static int wm8510_codec_probe(struct i2c_adapter *adap, int addr, int kind) 682 { 683 struct snd_soc_device *socdev = wm8510_socdev; 684 struct wm8510_setup_data *setup = socdev->codec_data; 685 struct snd_soc_codec *codec = socdev->codec; 686 struct i2c_client *i2c; 687 int ret; 688 689 if (addr != setup->i2c_address) 690 return -ENODEV; 691 692 client_template.adapter = adap; 693 client_template.addr = addr; 694 695 i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL); 696 if (i2c == NULL) { 697 kfree(codec); 698 return -ENOMEM; 699 } 700 i2c_set_clientdata(i2c, codec); 701 codec->control_data = i2c; 702 703 ret = i2c_attach_client(i2c); 704 if (ret < 0) { 705 pr_err("failed to attach codec at addr %x\n", addr); 706 goto err; 707 } 708 709 ret = wm8510_init(socdev); 710 if (ret < 0) { 711 pr_err("failed to initialise WM8510\n"); 712 goto err; 713 } 714 return ret; 715 716 err: 717 kfree(codec); 718 kfree(i2c); 719 return ret; 720 } 721 722 static int wm8510_i2c_detach(struct i2c_client *client) 723 { 724 struct snd_soc_codec *codec = i2c_get_clientdata(client); 725 i2c_detach_client(client); 726 kfree(codec->reg_cache); 727 kfree(client); 728 return 0; 729 } 730 731 static int wm8510_i2c_attach(struct i2c_adapter *adap) 732 { 733 return i2c_probe(adap, &addr_data, wm8510_codec_probe); 734 } 735 736 /* corgi i2c codec control layer */ 737 static struct i2c_driver wm8510_i2c_driver = { 738 .driver = { 739 .name = "WM8510 I2C Codec", 740 .owner = THIS_MODULE, 741 }, 742 .id = I2C_DRIVERID_WM8510, 743 .attach_adapter = wm8510_i2c_attach, 744 .detach_client = wm8510_i2c_detach, 745 .command = NULL, 746 }; 747 748 static struct i2c_client client_template = { 749 .name = "WM8510", 750 .driver = &wm8510_i2c_driver, 751 }; 752 #endif 753 754 static int wm8510_probe(struct platform_device *pdev) 755 { 756 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 757 struct wm8510_setup_data *setup; 758 struct snd_soc_codec *codec; 759 int ret = 0; 760 761 pr_info("WM8510 Audio Codec %s", WM8510_VERSION); 762 763 setup = socdev->codec_data; 764 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 765 if (codec == NULL) 766 return -ENOMEM; 767 768 socdev->codec = codec; 769 mutex_init(&codec->mutex); 770 INIT_LIST_HEAD(&codec->dapm_widgets); 771 INIT_LIST_HEAD(&codec->dapm_paths); 772 773 wm8510_socdev = socdev; 774 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 775 if (setup->i2c_address) { 776 normal_i2c[0] = setup->i2c_address; 777 codec->hw_write = (hw_write_t)i2c_master_send; 778 ret = i2c_add_driver(&wm8510_i2c_driver); 779 if (ret != 0) 780 printk(KERN_ERR "can't add i2c driver"); 781 } 782 #else 783 /* Add other interfaces here */ 784 #endif 785 return ret; 786 } 787 788 /* power down chip */ 789 static int wm8510_remove(struct platform_device *pdev) 790 { 791 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 792 struct snd_soc_codec *codec = socdev->codec; 793 794 if (codec->control_data) 795 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 796 797 snd_soc_free_pcms(socdev); 798 snd_soc_dapm_free(socdev); 799 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 800 i2c_del_driver(&wm8510_i2c_driver); 801 #endif 802 kfree(codec); 803 804 return 0; 805 } 806 807 struct snd_soc_codec_device soc_codec_dev_wm8510 = { 808 .probe = wm8510_probe, 809 .remove = wm8510_remove, 810 .suspend = wm8510_suspend, 811 .resume = wm8510_resume, 812 }; 813 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8510); 814 815 MODULE_DESCRIPTION("ASoC WM8510 driver"); 816 MODULE_AUTHOR("Liam Girdwood"); 817 MODULE_LICENSE("GPL"); 818