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 <linux/of_device.h> 24 #include <sound/core.h> 25 #include <sound/pcm.h> 26 #include <sound/pcm_params.h> 27 #include <sound/soc.h> 28 #include <sound/initval.h> 29 30 #include "wm8510.h" 31 32 /* 33 * wm8510 register cache 34 * We can't read the WM8510 register space when we are 35 * using 2 wire for device control, so we cache them instead. 36 */ 37 static const u16 wm8510_reg[WM8510_CACHEREGNUM] = { 38 0x0000, 0x0000, 0x0000, 0x0000, 39 0x0050, 0x0000, 0x0140, 0x0000, 40 0x0000, 0x0000, 0x0000, 0x00ff, 41 0x0000, 0x0000, 0x0100, 0x00ff, 42 0x0000, 0x0000, 0x012c, 0x002c, 43 0x002c, 0x002c, 0x002c, 0x0000, 44 0x0032, 0x0000, 0x0000, 0x0000, 45 0x0000, 0x0000, 0x0000, 0x0000, 46 0x0038, 0x000b, 0x0032, 0x0000, 47 0x0008, 0x000c, 0x0093, 0x00e9, 48 0x0000, 0x0000, 0x0000, 0x0000, 49 0x0003, 0x0010, 0x0000, 0x0000, 50 0x0000, 0x0002, 0x0001, 0x0000, 51 0x0000, 0x0000, 0x0039, 0x0000, 52 0x0001, 53 }; 54 55 #define WM8510_POWER1_BIASEN 0x08 56 #define WM8510_POWER1_BUFIOEN 0x10 57 58 #define wm8510_reset(c) snd_soc_write(c, WM8510_RESET, 0) 59 60 /* codec private data */ 61 struct wm8510_priv { 62 enum snd_soc_control_type control_type; 63 }; 64 65 static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" }; 66 static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; 67 static const char *wm8510_alc[] = { "ALC", "Limiter" }; 68 69 static const struct soc_enum wm8510_enum[] = { 70 SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */ 71 SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */ 72 SOC_ENUM_SINGLE(WM8510_DAC, 4, 4, wm8510_deemp), 73 SOC_ENUM_SINGLE(WM8510_ALC3, 8, 2, wm8510_alc), 74 }; 75 76 static const struct snd_kcontrol_new wm8510_snd_controls[] = { 77 78 SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0), 79 80 SOC_ENUM("DAC Companding", wm8510_enum[1]), 81 SOC_ENUM("ADC Companding", wm8510_enum[0]), 82 83 SOC_ENUM("Playback De-emphasis", wm8510_enum[2]), 84 SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0), 85 86 SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0), 87 88 SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0), 89 SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0), 90 SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0), 91 92 SOC_SINGLE("Capture Volume", WM8510_ADCVOL, 0, 127, 0), 93 94 SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1, 8, 1, 0), 95 SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1, 4, 15, 0), 96 SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1, 0, 15, 0), 97 98 SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2, 4, 7, 0), 99 SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2, 0, 15, 0), 100 101 SOC_SINGLE("ALC Enable Switch", WM8510_ALC1, 8, 1, 0), 102 SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1, 3, 7, 0), 103 SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1, 0, 7, 0), 104 105 SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2, 8, 1, 0), 106 SOC_SINGLE("ALC Capture Hold", WM8510_ALC2, 4, 7, 0), 107 SOC_SINGLE("ALC Capture Target", WM8510_ALC2, 0, 15, 0), 108 109 SOC_ENUM("ALC Capture Mode", wm8510_enum[3]), 110 SOC_SINGLE("ALC Capture Decay", WM8510_ALC3, 4, 15, 0), 111 SOC_SINGLE("ALC Capture Attack", WM8510_ALC3, 0, 15, 0), 112 113 SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE, 3, 1, 0), 114 SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE, 0, 7, 0), 115 116 SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA, 7, 1, 0), 117 SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA, 0, 63, 0), 118 119 SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL, 7, 1, 0), 120 SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL, 6, 1, 1), 121 SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL, 0, 63, 0), 122 SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0), 123 124 SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST, 8, 1, 0), 125 SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1), 126 }; 127 128 /* Speaker Output Mixer */ 129 static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = { 130 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0), 131 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0), 132 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0), 133 }; 134 135 /* Mono Output Mixer */ 136 static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = { 137 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0), 138 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0), 139 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0), 140 }; 141 142 static const struct snd_kcontrol_new wm8510_boost_controls[] = { 143 SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA, 6, 1, 1), 144 SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0), 145 SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0), 146 }; 147 148 static const struct snd_kcontrol_new wm8510_micpga_controls[] = { 149 SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0), 150 SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0), 151 SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0), 152 }; 153 154 static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = { 155 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0, 156 &wm8510_speaker_mixer_controls[0], 157 ARRAY_SIZE(wm8510_speaker_mixer_controls)), 158 SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0, 159 &wm8510_mono_mixer_controls[0], 160 ARRAY_SIZE(wm8510_mono_mixer_controls)), 161 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0), 162 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0), 163 SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0), 164 SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0), 165 SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0), 166 SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0), 167 168 SND_SOC_DAPM_MIXER("Mic PGA", WM8510_POWER2, 2, 0, 169 &wm8510_micpga_controls[0], 170 ARRAY_SIZE(wm8510_micpga_controls)), 171 SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0, 172 &wm8510_boost_controls[0], 173 ARRAY_SIZE(wm8510_boost_controls)), 174 175 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0), 176 177 SND_SOC_DAPM_INPUT("MICN"), 178 SND_SOC_DAPM_INPUT("MICP"), 179 SND_SOC_DAPM_INPUT("AUX"), 180 SND_SOC_DAPM_OUTPUT("MONOOUT"), 181 SND_SOC_DAPM_OUTPUT("SPKOUTP"), 182 SND_SOC_DAPM_OUTPUT("SPKOUTN"), 183 }; 184 185 static const struct snd_soc_dapm_route audio_map[] = { 186 /* Mono output mixer */ 187 {"Mono Mixer", "PCM Playback Switch", "DAC"}, 188 {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, 189 {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, 190 191 /* Speaker output mixer */ 192 {"Speaker Mixer", "PCM Playback Switch", "DAC"}, 193 {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, 194 {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, 195 196 /* Outputs */ 197 {"Mono Out", NULL, "Mono Mixer"}, 198 {"MONOOUT", NULL, "Mono Out"}, 199 {"SpkN Out", NULL, "Speaker Mixer"}, 200 {"SpkP Out", NULL, "Speaker Mixer"}, 201 {"SPKOUTN", NULL, "SpkN Out"}, 202 {"SPKOUTP", NULL, "SpkP Out"}, 203 204 /* Microphone PGA */ 205 {"Mic PGA", "MICN Switch", "MICN"}, 206 {"Mic PGA", "MICP Switch", "MICP"}, 207 { "Mic PGA", "AUX Switch", "Aux Input" }, 208 209 /* Boost Mixer */ 210 {"Boost Mixer", "Mic PGA Switch", "Mic PGA"}, 211 {"Boost Mixer", "Mic Volume", "MICP"}, 212 {"Boost Mixer", "Aux Volume", "Aux Input"}, 213 214 {"ADC", NULL, "Boost Mixer"}, 215 }; 216 217 static int wm8510_add_widgets(struct snd_soc_codec *codec) 218 { 219 struct snd_soc_dapm_context *dapm = &codec->dapm; 220 221 snd_soc_dapm_new_controls(dapm, wm8510_dapm_widgets, 222 ARRAY_SIZE(wm8510_dapm_widgets)); 223 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); 224 225 return 0; 226 } 227 228 struct pll_ { 229 unsigned int pre_div:4; /* prescale - 1 */ 230 unsigned int n:4; 231 unsigned int k; 232 }; 233 234 static struct pll_ pll_div; 235 236 /* The size in bits of the pll divide multiplied by 10 237 * to allow rounding later */ 238 #define FIXED_PLL_SIZE ((1 << 24) * 10) 239 240 static void pll_factors(unsigned int target, unsigned int source) 241 { 242 unsigned long long Kpart; 243 unsigned int K, Ndiv, Nmod; 244 245 Ndiv = target / source; 246 if (Ndiv < 6) { 247 source >>= 1; 248 pll_div.pre_div = 1; 249 Ndiv = target / source; 250 } else 251 pll_div.pre_div = 0; 252 253 if ((Ndiv < 6) || (Ndiv > 12)) 254 printk(KERN_WARNING 255 "WM8510 N value %u outwith recommended range!d\n", 256 Ndiv); 257 258 pll_div.n = Ndiv; 259 Nmod = target % source; 260 Kpart = FIXED_PLL_SIZE * (long long)Nmod; 261 262 do_div(Kpart, source); 263 264 K = Kpart & 0xFFFFFFFF; 265 266 /* Check if we need to round */ 267 if ((K % 10) >= 5) 268 K += 5; 269 270 /* Move down to proper range now rounding is done */ 271 K /= 10; 272 273 pll_div.k = K; 274 } 275 276 static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, 277 int source, unsigned int freq_in, unsigned int freq_out) 278 { 279 struct snd_soc_codec *codec = codec_dai->codec; 280 u16 reg; 281 282 if (freq_in == 0 || freq_out == 0) { 283 /* Clock CODEC directly from MCLK */ 284 reg = snd_soc_read(codec, WM8510_CLOCK); 285 snd_soc_write(codec, WM8510_CLOCK, reg & 0x0ff); 286 287 /* Turn off PLL */ 288 reg = snd_soc_read(codec, WM8510_POWER1); 289 snd_soc_write(codec, WM8510_POWER1, reg & 0x1df); 290 return 0; 291 } 292 293 pll_factors(freq_out*4, freq_in); 294 295 snd_soc_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n); 296 snd_soc_write(codec, WM8510_PLLK1, pll_div.k >> 18); 297 snd_soc_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff); 298 snd_soc_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff); 299 reg = snd_soc_read(codec, WM8510_POWER1); 300 snd_soc_write(codec, WM8510_POWER1, reg | 0x020); 301 302 /* Run CODEC from PLL instead of MCLK */ 303 reg = snd_soc_read(codec, WM8510_CLOCK); 304 snd_soc_write(codec, WM8510_CLOCK, reg | 0x100); 305 306 return 0; 307 } 308 309 /* 310 * Configure WM8510 clock dividers. 311 */ 312 static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 313 int div_id, int div) 314 { 315 struct snd_soc_codec *codec = codec_dai->codec; 316 u16 reg; 317 318 switch (div_id) { 319 case WM8510_OPCLKDIV: 320 reg = snd_soc_read(codec, WM8510_GPIO) & 0x1cf; 321 snd_soc_write(codec, WM8510_GPIO, reg | div); 322 break; 323 case WM8510_MCLKDIV: 324 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x11f; 325 snd_soc_write(codec, WM8510_CLOCK, reg | div); 326 break; 327 case WM8510_ADCCLK: 328 reg = snd_soc_read(codec, WM8510_ADC) & 0x1f7; 329 snd_soc_write(codec, WM8510_ADC, reg | div); 330 break; 331 case WM8510_DACCLK: 332 reg = snd_soc_read(codec, WM8510_DAC) & 0x1f7; 333 snd_soc_write(codec, WM8510_DAC, reg | div); 334 break; 335 case WM8510_BCLKDIV: 336 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x1e3; 337 snd_soc_write(codec, WM8510_CLOCK, reg | div); 338 break; 339 default: 340 return -EINVAL; 341 } 342 343 return 0; 344 } 345 346 static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai, 347 unsigned int fmt) 348 { 349 struct snd_soc_codec *codec = codec_dai->codec; 350 u16 iface = 0; 351 u16 clk = snd_soc_read(codec, WM8510_CLOCK) & 0x1fe; 352 353 /* set master/slave audio interface */ 354 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 355 case SND_SOC_DAIFMT_CBM_CFM: 356 clk |= 0x0001; 357 break; 358 case SND_SOC_DAIFMT_CBS_CFS: 359 break; 360 default: 361 return -EINVAL; 362 } 363 364 /* interface format */ 365 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 366 case SND_SOC_DAIFMT_I2S: 367 iface |= 0x0010; 368 break; 369 case SND_SOC_DAIFMT_RIGHT_J: 370 break; 371 case SND_SOC_DAIFMT_LEFT_J: 372 iface |= 0x0008; 373 break; 374 case SND_SOC_DAIFMT_DSP_A: 375 iface |= 0x00018; 376 break; 377 default: 378 return -EINVAL; 379 } 380 381 /* clock inversion */ 382 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 383 case SND_SOC_DAIFMT_NB_NF: 384 break; 385 case SND_SOC_DAIFMT_IB_IF: 386 iface |= 0x0180; 387 break; 388 case SND_SOC_DAIFMT_IB_NF: 389 iface |= 0x0100; 390 break; 391 case SND_SOC_DAIFMT_NB_IF: 392 iface |= 0x0080; 393 break; 394 default: 395 return -EINVAL; 396 } 397 398 snd_soc_write(codec, WM8510_IFACE, iface); 399 snd_soc_write(codec, WM8510_CLOCK, clk); 400 return 0; 401 } 402 403 static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream, 404 struct snd_pcm_hw_params *params, 405 struct snd_soc_dai *dai) 406 { 407 struct snd_soc_pcm_runtime *rtd = substream->private_data; 408 struct snd_soc_codec *codec = rtd->codec; 409 u16 iface = snd_soc_read(codec, WM8510_IFACE) & 0x19f; 410 u16 adn = snd_soc_read(codec, WM8510_ADD) & 0x1f1; 411 412 /* bit size */ 413 switch (params_format(params)) { 414 case SNDRV_PCM_FORMAT_S16_LE: 415 break; 416 case SNDRV_PCM_FORMAT_S20_3LE: 417 iface |= 0x0020; 418 break; 419 case SNDRV_PCM_FORMAT_S24_LE: 420 iface |= 0x0040; 421 break; 422 case SNDRV_PCM_FORMAT_S32_LE: 423 iface |= 0x0060; 424 break; 425 } 426 427 /* filter coefficient */ 428 switch (params_rate(params)) { 429 case 8000: 430 adn |= 0x5 << 1; 431 break; 432 case 11025: 433 adn |= 0x4 << 1; 434 break; 435 case 16000: 436 adn |= 0x3 << 1; 437 break; 438 case 22050: 439 adn |= 0x2 << 1; 440 break; 441 case 32000: 442 adn |= 0x1 << 1; 443 break; 444 case 44100: 445 case 48000: 446 break; 447 } 448 449 snd_soc_write(codec, WM8510_IFACE, iface); 450 snd_soc_write(codec, WM8510_ADD, adn); 451 return 0; 452 } 453 454 static int wm8510_mute(struct snd_soc_dai *dai, int mute) 455 { 456 struct snd_soc_codec *codec = dai->codec; 457 u16 mute_reg = snd_soc_read(codec, WM8510_DAC) & 0xffbf; 458 459 if (mute) 460 snd_soc_write(codec, WM8510_DAC, mute_reg | 0x40); 461 else 462 snd_soc_write(codec, WM8510_DAC, mute_reg); 463 return 0; 464 } 465 466 /* liam need to make this lower power with dapm */ 467 static int wm8510_set_bias_level(struct snd_soc_codec *codec, 468 enum snd_soc_bias_level level) 469 { 470 u16 power1 = snd_soc_read(codec, WM8510_POWER1) & ~0x3; 471 472 switch (level) { 473 case SND_SOC_BIAS_ON: 474 case SND_SOC_BIAS_PREPARE: 475 power1 |= 0x1; /* VMID 50k */ 476 snd_soc_write(codec, WM8510_POWER1, power1); 477 break; 478 479 case SND_SOC_BIAS_STANDBY: 480 power1 |= WM8510_POWER1_BIASEN | WM8510_POWER1_BUFIOEN; 481 482 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { 483 snd_soc_cache_sync(codec); 484 485 /* Initial cap charge at VMID 5k */ 486 snd_soc_write(codec, WM8510_POWER1, power1 | 0x3); 487 mdelay(100); 488 } 489 490 power1 |= 0x2; /* VMID 500k */ 491 snd_soc_write(codec, WM8510_POWER1, power1); 492 break; 493 494 case SND_SOC_BIAS_OFF: 495 snd_soc_write(codec, WM8510_POWER1, 0); 496 snd_soc_write(codec, WM8510_POWER2, 0); 497 snd_soc_write(codec, WM8510_POWER3, 0); 498 break; 499 } 500 501 codec->dapm.bias_level = level; 502 return 0; 503 } 504 505 #define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 506 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ 507 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) 508 509 #define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 510 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 511 512 static struct snd_soc_dai_ops wm8510_dai_ops = { 513 .hw_params = wm8510_pcm_hw_params, 514 .digital_mute = wm8510_mute, 515 .set_fmt = wm8510_set_dai_fmt, 516 .set_clkdiv = wm8510_set_dai_clkdiv, 517 .set_pll = wm8510_set_dai_pll, 518 }; 519 520 static struct snd_soc_dai_driver wm8510_dai = { 521 .name = "wm8510-hifi", 522 .playback = { 523 .stream_name = "Playback", 524 .channels_min = 2, 525 .channels_max = 2, 526 .rates = WM8510_RATES, 527 .formats = WM8510_FORMATS,}, 528 .capture = { 529 .stream_name = "Capture", 530 .channels_min = 2, 531 .channels_max = 2, 532 .rates = WM8510_RATES, 533 .formats = WM8510_FORMATS,}, 534 .ops = &wm8510_dai_ops, 535 .symmetric_rates = 1, 536 }; 537 538 static int wm8510_suspend(struct snd_soc_codec *codec, pm_message_t state) 539 { 540 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 541 return 0; 542 } 543 544 static int wm8510_resume(struct snd_soc_codec *codec) 545 { 546 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 547 return 0; 548 } 549 550 static int wm8510_probe(struct snd_soc_codec *codec) 551 { 552 struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec); 553 int ret; 554 555 ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8510->control_type); 556 if (ret < 0) { 557 printk(KERN_ERR "wm8510: failed to set cache I/O: %d\n", ret); 558 return ret; 559 } 560 561 wm8510_reset(codec); 562 563 /* power on device */ 564 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 565 snd_soc_add_controls(codec, wm8510_snd_controls, 566 ARRAY_SIZE(wm8510_snd_controls)); 567 wm8510_add_widgets(codec); 568 569 return ret; 570 } 571 572 /* power down chip */ 573 static int wm8510_remove(struct snd_soc_codec *codec) 574 { 575 struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec); 576 577 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 578 kfree(wm8510); 579 return 0; 580 } 581 582 static struct snd_soc_codec_driver soc_codec_dev_wm8510 = { 583 .probe = wm8510_probe, 584 .remove = wm8510_remove, 585 .suspend = wm8510_suspend, 586 .resume = wm8510_resume, 587 .set_bias_level = wm8510_set_bias_level, 588 .reg_cache_size = ARRAY_SIZE(wm8510_reg), 589 .reg_word_size = sizeof(u16), 590 .reg_cache_default =wm8510_reg, 591 }; 592 593 static const struct of_device_id wm8510_of_match[] = { 594 { .compatible = "wlf,wm8510" }, 595 { }, 596 }; 597 598 #if defined(CONFIG_SPI_MASTER) 599 static int __devinit wm8510_spi_probe(struct spi_device *spi) 600 { 601 struct wm8510_priv *wm8510; 602 int ret; 603 604 wm8510 = kzalloc(sizeof(struct wm8510_priv), GFP_KERNEL); 605 if (wm8510 == NULL) 606 return -ENOMEM; 607 608 wm8510->control_type = SND_SOC_SPI; 609 spi_set_drvdata(spi, wm8510); 610 611 ret = snd_soc_register_codec(&spi->dev, 612 &soc_codec_dev_wm8510, &wm8510_dai, 1); 613 if (ret < 0) 614 kfree(wm8510); 615 return ret; 616 } 617 618 static int __devexit wm8510_spi_remove(struct spi_device *spi) 619 { 620 snd_soc_unregister_codec(&spi->dev); 621 return 0; 622 } 623 624 static struct spi_driver wm8510_spi_driver = { 625 .driver = { 626 .name = "wm8510", 627 .owner = THIS_MODULE, 628 .of_match_table = wm8510_of_match, 629 }, 630 .probe = wm8510_spi_probe, 631 .remove = __devexit_p(wm8510_spi_remove), 632 }; 633 #endif /* CONFIG_SPI_MASTER */ 634 635 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 636 static __devinit int wm8510_i2c_probe(struct i2c_client *i2c, 637 const struct i2c_device_id *id) 638 { 639 struct wm8510_priv *wm8510; 640 int ret; 641 642 wm8510 = kzalloc(sizeof(struct wm8510_priv), GFP_KERNEL); 643 if (wm8510 == NULL) 644 return -ENOMEM; 645 646 i2c_set_clientdata(i2c, wm8510); 647 wm8510->control_type = SND_SOC_I2C; 648 649 ret = snd_soc_register_codec(&i2c->dev, 650 &soc_codec_dev_wm8510, &wm8510_dai, 1); 651 if (ret < 0) 652 kfree(wm8510); 653 return ret; 654 } 655 656 static __devexit int wm8510_i2c_remove(struct i2c_client *client) 657 { 658 snd_soc_unregister_codec(&client->dev); 659 return 0; 660 } 661 662 static const struct i2c_device_id wm8510_i2c_id[] = { 663 { "wm8510", 0 }, 664 { } 665 }; 666 MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id); 667 668 static struct i2c_driver wm8510_i2c_driver = { 669 .driver = { 670 .name = "wm8510-codec", 671 .owner = THIS_MODULE, 672 .of_match_table = wm8510_of_match, 673 }, 674 .probe = wm8510_i2c_probe, 675 .remove = __devexit_p(wm8510_i2c_remove), 676 .id_table = wm8510_i2c_id, 677 }; 678 #endif 679 680 static int __init wm8510_modinit(void) 681 { 682 int ret = 0; 683 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 684 ret = i2c_add_driver(&wm8510_i2c_driver); 685 if (ret != 0) { 686 printk(KERN_ERR "Failed to register WM8510 I2C driver: %d\n", 687 ret); 688 } 689 #endif 690 #if defined(CONFIG_SPI_MASTER) 691 ret = spi_register_driver(&wm8510_spi_driver); 692 if (ret != 0) { 693 printk(KERN_ERR "Failed to register WM8510 SPI driver: %d\n", 694 ret); 695 } 696 #endif 697 return ret; 698 } 699 module_init(wm8510_modinit); 700 701 static void __exit wm8510_exit(void) 702 { 703 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 704 i2c_del_driver(&wm8510_i2c_driver); 705 #endif 706 #if defined(CONFIG_SPI_MASTER) 707 spi_unregister_driver(&wm8510_spi_driver); 708 #endif 709 } 710 module_exit(wm8510_exit); 711 712 MODULE_DESCRIPTION("ASoC WM8510 driver"); 713 MODULE_AUTHOR("Liam Girdwood"); 714 MODULE_LICENSE("GPL"); 715