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 #define wm8510_reset(c) snd_soc_write(c, WM8510_RESET, 0) 62 63 static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" }; 64 static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; 65 static const char *wm8510_alc[] = { "ALC", "Limiter" }; 66 67 static 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 74 static const struct snd_kcontrol_new wm8510_snd_controls[] = { 75 76 SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0), 77 78 SOC_ENUM("DAC Companding", wm8510_enum[1]), 79 SOC_ENUM("ADC Companding", wm8510_enum[0]), 80 81 SOC_ENUM("Playback De-emphasis", wm8510_enum[2]), 82 SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0), 83 84 SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0), 85 86 SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0), 87 SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0), 88 SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0), 89 90 SOC_SINGLE("Capture Volume", WM8510_ADCVOL, 0, 127, 0), 91 92 SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1, 8, 1, 0), 93 SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1, 4, 15, 0), 94 SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1, 0, 15, 0), 95 96 SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2, 4, 7, 0), 97 SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2, 0, 15, 0), 98 99 SOC_SINGLE("ALC Enable Switch", WM8510_ALC1, 8, 1, 0), 100 SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1, 3, 7, 0), 101 SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1, 0, 7, 0), 102 103 SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2, 8, 1, 0), 104 SOC_SINGLE("ALC Capture Hold", WM8510_ALC2, 4, 7, 0), 105 SOC_SINGLE("ALC Capture Target", WM8510_ALC2, 0, 15, 0), 106 107 SOC_ENUM("ALC Capture Mode", wm8510_enum[3]), 108 SOC_SINGLE("ALC Capture Decay", WM8510_ALC3, 4, 15, 0), 109 SOC_SINGLE("ALC Capture Attack", WM8510_ALC3, 0, 15, 0), 110 111 SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE, 3, 1, 0), 112 SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE, 0, 7, 0), 113 114 SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA, 7, 1, 0), 115 SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA, 0, 63, 0), 116 117 SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL, 7, 1, 0), 118 SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL, 6, 1, 1), 119 SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL, 0, 63, 0), 120 SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0), 121 122 SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST, 8, 1, 0), 123 SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1), 124 }; 125 126 /* Speaker Output Mixer */ 127 static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = { 128 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0), 129 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0), 130 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0), 131 }; 132 133 /* Mono Output Mixer */ 134 static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = { 135 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0), 136 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0), 137 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0), 138 }; 139 140 static const struct snd_kcontrol_new wm8510_boost_controls[] = { 141 SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA, 6, 1, 1), 142 SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0), 143 SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0), 144 }; 145 146 static const struct snd_kcontrol_new wm8510_micpga_controls[] = { 147 SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0), 148 SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0), 149 SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0), 150 }; 151 152 static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = { 153 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0, 154 &wm8510_speaker_mixer_controls[0], 155 ARRAY_SIZE(wm8510_speaker_mixer_controls)), 156 SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0, 157 &wm8510_mono_mixer_controls[0], 158 ARRAY_SIZE(wm8510_mono_mixer_controls)), 159 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0), 160 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0), 161 SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0), 162 SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0), 163 SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0), 164 SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0), 165 166 SND_SOC_DAPM_MIXER("Mic PGA", WM8510_POWER2, 2, 0, 167 &wm8510_micpga_controls[0], 168 ARRAY_SIZE(wm8510_micpga_controls)), 169 SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0, 170 &wm8510_boost_controls[0], 171 ARRAY_SIZE(wm8510_boost_controls)), 172 173 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0), 174 175 SND_SOC_DAPM_INPUT("MICN"), 176 SND_SOC_DAPM_INPUT("MICP"), 177 SND_SOC_DAPM_INPUT("AUX"), 178 SND_SOC_DAPM_OUTPUT("MONOOUT"), 179 SND_SOC_DAPM_OUTPUT("SPKOUTP"), 180 SND_SOC_DAPM_OUTPUT("SPKOUTN"), 181 }; 182 183 static 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 }; 214 215 static 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 snd_soc_dapm_new_widgets(codec); 223 return 0; 224 } 225 226 struct pll_ { 227 unsigned int pre_div:4; /* prescale - 1 */ 228 unsigned int n:4; 229 unsigned int k; 230 }; 231 232 static 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) 237 238 static 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 } 273 274 static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai, 275 int pll_id, 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 */ 310 static 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 } 343 344 static 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 } 400 401 static 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 SNDRV_PCM_RATE_8000: 429 adn |= 0x5 << 1; 430 break; 431 case SNDRV_PCM_RATE_11025: 432 adn |= 0x4 << 1; 433 break; 434 case SNDRV_PCM_RATE_16000: 435 adn |= 0x3 << 1; 436 break; 437 case SNDRV_PCM_RATE_22050: 438 adn |= 0x2 << 1; 439 break; 440 case SNDRV_PCM_RATE_32000: 441 adn |= 0x1 << 1; 442 break; 443 case SNDRV_PCM_RATE_44100: 444 case SNDRV_PCM_RATE_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 } 452 453 static 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 */ 466 static 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) 508 509 static 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 }; 516 517 struct 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 }; 534 EXPORT_SYMBOL_GPL(wm8510_dai); 535 536 static 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 } 544 545 static 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 wm8510_set_bias_level(codec, codec->suspend_bias_level); 561 return 0; 562 } 563 564 /* 565 * initialise the WM8510 driver 566 * register the mixer and dsp interfaces with the kernel 567 */ 568 static 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 ret = snd_soc_init_card(socdev); 608 if (ret < 0) { 609 printk(KERN_ERR "wm8510: failed to register card\n"); 610 goto card_err; 611 } 612 return ret; 613 614 card_err: 615 snd_soc_free_pcms(socdev); 616 snd_soc_dapm_free(socdev); 617 err: 618 kfree(codec->reg_cache); 619 return ret; 620 } 621 622 static struct snd_soc_device *wm8510_socdev; 623 624 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 625 626 /* 627 * WM8510 2 wire address is 0x1a 628 */ 629 630 static int wm8510_i2c_probe(struct i2c_client *i2c, 631 const struct i2c_device_id *id) 632 { 633 struct snd_soc_device *socdev = wm8510_socdev; 634 struct snd_soc_codec *codec = socdev->card->codec; 635 int ret; 636 637 i2c_set_clientdata(i2c, codec); 638 codec->control_data = i2c; 639 640 ret = wm8510_init(socdev, SND_SOC_I2C); 641 if (ret < 0) 642 pr_err("failed to initialise WM8510\n"); 643 644 return ret; 645 } 646 647 static int wm8510_i2c_remove(struct i2c_client *client) 648 { 649 struct snd_soc_codec *codec = i2c_get_clientdata(client); 650 kfree(codec->reg_cache); 651 return 0; 652 } 653 654 static const struct i2c_device_id wm8510_i2c_id[] = { 655 { "wm8510", 0 }, 656 { } 657 }; 658 MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id); 659 660 static struct i2c_driver wm8510_i2c_driver = { 661 .driver = { 662 .name = "WM8510 I2C Codec", 663 .owner = THIS_MODULE, 664 }, 665 .probe = wm8510_i2c_probe, 666 .remove = wm8510_i2c_remove, 667 .id_table = wm8510_i2c_id, 668 }; 669 670 static int wm8510_add_i2c_device(struct platform_device *pdev, 671 const struct wm8510_setup_data *setup) 672 { 673 struct i2c_board_info info; 674 struct i2c_adapter *adapter; 675 struct i2c_client *client; 676 int ret; 677 678 ret = i2c_add_driver(&wm8510_i2c_driver); 679 if (ret != 0) { 680 dev_err(&pdev->dev, "can't add i2c driver\n"); 681 return ret; 682 } 683 684 memset(&info, 0, sizeof(struct i2c_board_info)); 685 info.addr = setup->i2c_address; 686 strlcpy(info.type, "wm8510", I2C_NAME_SIZE); 687 688 adapter = i2c_get_adapter(setup->i2c_bus); 689 if (!adapter) { 690 dev_err(&pdev->dev, "can't get i2c adapter %d\n", 691 setup->i2c_bus); 692 goto err_driver; 693 } 694 695 client = i2c_new_device(adapter, &info); 696 i2c_put_adapter(adapter); 697 if (!client) { 698 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", 699 (unsigned int)info.addr); 700 goto err_driver; 701 } 702 703 return 0; 704 705 err_driver: 706 i2c_del_driver(&wm8510_i2c_driver); 707 return -ENODEV; 708 } 709 #endif 710 711 #if defined(CONFIG_SPI_MASTER) 712 static int __devinit wm8510_spi_probe(struct spi_device *spi) 713 { 714 struct snd_soc_device *socdev = wm8510_socdev; 715 struct snd_soc_codec *codec = socdev->card->codec; 716 int ret; 717 718 codec->control_data = spi; 719 720 ret = wm8510_init(socdev, SND_SOC_SPI); 721 if (ret < 0) 722 dev_err(&spi->dev, "failed to initialise WM8510\n"); 723 724 return ret; 725 } 726 727 static int __devexit wm8510_spi_remove(struct spi_device *spi) 728 { 729 return 0; 730 } 731 732 static struct spi_driver wm8510_spi_driver = { 733 .driver = { 734 .name = "wm8510", 735 .bus = &spi_bus_type, 736 .owner = THIS_MODULE, 737 }, 738 .probe = wm8510_spi_probe, 739 .remove = __devexit_p(wm8510_spi_remove), 740 }; 741 #endif /* CONFIG_SPI_MASTER */ 742 743 static int wm8510_probe(struct platform_device *pdev) 744 { 745 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 746 struct wm8510_setup_data *setup; 747 struct snd_soc_codec *codec; 748 int ret = 0; 749 750 pr_info("WM8510 Audio Codec %s", WM8510_VERSION); 751 752 setup = socdev->codec_data; 753 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 754 if (codec == NULL) 755 return -ENOMEM; 756 757 socdev->card->codec = codec; 758 mutex_init(&codec->mutex); 759 INIT_LIST_HEAD(&codec->dapm_widgets); 760 INIT_LIST_HEAD(&codec->dapm_paths); 761 762 wm8510_socdev = socdev; 763 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 764 if (setup->i2c_address) { 765 ret = wm8510_add_i2c_device(pdev, setup); 766 } 767 #endif 768 #if defined(CONFIG_SPI_MASTER) 769 if (setup->spi) { 770 ret = spi_register_driver(&wm8510_spi_driver); 771 if (ret != 0) 772 printk(KERN_ERR "can't add spi driver"); 773 } 774 #endif 775 776 if (ret != 0) 777 kfree(codec); 778 return ret; 779 } 780 781 /* power down chip */ 782 static int wm8510_remove(struct platform_device *pdev) 783 { 784 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 785 struct snd_soc_codec *codec = socdev->card->codec; 786 787 if (codec->control_data) 788 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 789 790 snd_soc_free_pcms(socdev); 791 snd_soc_dapm_free(socdev); 792 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 793 i2c_unregister_device(codec->control_data); 794 i2c_del_driver(&wm8510_i2c_driver); 795 #endif 796 #if defined(CONFIG_SPI_MASTER) 797 spi_unregister_driver(&wm8510_spi_driver); 798 #endif 799 kfree(codec); 800 801 return 0; 802 } 803 804 struct snd_soc_codec_device soc_codec_dev_wm8510 = { 805 .probe = wm8510_probe, 806 .remove = wm8510_remove, 807 .suspend = wm8510_suspend, 808 .resume = wm8510_resume, 809 }; 810 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8510); 811 812 static int __init wm8510_modinit(void) 813 { 814 return snd_soc_register_dai(&wm8510_dai); 815 } 816 module_init(wm8510_modinit); 817 818 static void __exit wm8510_exit(void) 819 { 820 snd_soc_unregister_dai(&wm8510_dai); 821 } 822 module_exit(wm8510_exit); 823 824 MODULE_DESCRIPTION("ASoC WM8510 driver"); 825 MODULE_AUTHOR("Liam Girdwood"); 826 MODULE_LICENSE("GPL"); 827