1 /* 2 * wm8510.c -- WM8510 ALSA Soc Audio driver 3 * 4 * Copyright 2006 Wolfson Microelectronics PLC. 5 * 6 * Author: Liam Girdwood <lrg@slimlogic.co.uk> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #include <linux/module.h> 14 #include <linux/moduleparam.h> 15 #include <linux/kernel.h> 16 #include <linux/init.h> 17 #include <linux/delay.h> 18 #include <linux/pm.h> 19 #include <linux/i2c.h> 20 #include <linux/platform_device.h> 21 #include <linux/spi/spi.h> 22 #include <linux/slab.h> 23 #include <sound/core.h> 24 #include <sound/pcm.h> 25 #include <sound/pcm_params.h> 26 #include <sound/soc.h> 27 #include <sound/initval.h> 28 29 #include "wm8510.h" 30 31 /* 32 * wm8510 register cache 33 * We can't read the WM8510 register space when we are 34 * using 2 wire for device control, so we cache them instead. 35 */ 36 static const u16 wm8510_reg[WM8510_CACHEREGNUM] = { 37 0x0000, 0x0000, 0x0000, 0x0000, 38 0x0050, 0x0000, 0x0140, 0x0000, 39 0x0000, 0x0000, 0x0000, 0x00ff, 40 0x0000, 0x0000, 0x0100, 0x00ff, 41 0x0000, 0x0000, 0x012c, 0x002c, 42 0x002c, 0x002c, 0x002c, 0x0000, 43 0x0032, 0x0000, 0x0000, 0x0000, 44 0x0000, 0x0000, 0x0000, 0x0000, 45 0x0038, 0x000b, 0x0032, 0x0000, 46 0x0008, 0x000c, 0x0093, 0x00e9, 47 0x0000, 0x0000, 0x0000, 0x0000, 48 0x0003, 0x0010, 0x0000, 0x0000, 49 0x0000, 0x0002, 0x0001, 0x0000, 50 0x0000, 0x0000, 0x0039, 0x0000, 51 0x0001, 52 }; 53 54 #define WM8510_POWER1_BIASEN 0x08 55 #define WM8510_POWER1_BUFIOEN 0x10 56 57 #define wm8510_reset(c) snd_soc_write(c, WM8510_RESET, 0) 58 59 /* codec private data */ 60 struct wm8510_priv { 61 enum snd_soc_control_type control_type; 62 }; 63 64 static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" }; 65 static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; 66 static const char *wm8510_alc[] = { "ALC", "Limiter" }; 67 68 static const struct soc_enum wm8510_enum[] = { 69 SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */ 70 SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */ 71 SOC_ENUM_SINGLE(WM8510_DAC, 4, 4, wm8510_deemp), 72 SOC_ENUM_SINGLE(WM8510_ALC3, 8, 2, wm8510_alc), 73 }; 74 75 static const struct snd_kcontrol_new wm8510_snd_controls[] = { 76 77 SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0), 78 79 SOC_ENUM("DAC Companding", wm8510_enum[1]), 80 SOC_ENUM("ADC Companding", wm8510_enum[0]), 81 82 SOC_ENUM("Playback De-emphasis", wm8510_enum[2]), 83 SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0), 84 85 SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0), 86 87 SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0), 88 SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0), 89 SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0), 90 91 SOC_SINGLE("Capture Volume", WM8510_ADCVOL, 0, 127, 0), 92 93 SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1, 8, 1, 0), 94 SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1, 4, 15, 0), 95 SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1, 0, 15, 0), 96 97 SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2, 4, 7, 0), 98 SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2, 0, 15, 0), 99 100 SOC_SINGLE("ALC Enable Switch", WM8510_ALC1, 8, 1, 0), 101 SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1, 3, 7, 0), 102 SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1, 0, 7, 0), 103 104 SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2, 8, 1, 0), 105 SOC_SINGLE("ALC Capture Hold", WM8510_ALC2, 4, 7, 0), 106 SOC_SINGLE("ALC Capture Target", WM8510_ALC2, 0, 15, 0), 107 108 SOC_ENUM("ALC Capture Mode", wm8510_enum[3]), 109 SOC_SINGLE("ALC Capture Decay", WM8510_ALC3, 4, 15, 0), 110 SOC_SINGLE("ALC Capture Attack", WM8510_ALC3, 0, 15, 0), 111 112 SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE, 3, 1, 0), 113 SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE, 0, 7, 0), 114 115 SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA, 7, 1, 0), 116 SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA, 0, 63, 0), 117 118 SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL, 7, 1, 0), 119 SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL, 6, 1, 1), 120 SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL, 0, 63, 0), 121 SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0), 122 123 SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST, 8, 1, 0), 124 SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1), 125 }; 126 127 /* Speaker Output Mixer */ 128 static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = { 129 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0), 130 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0), 131 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0), 132 }; 133 134 /* Mono Output Mixer */ 135 static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = { 136 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0), 137 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0), 138 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0), 139 }; 140 141 static const struct snd_kcontrol_new wm8510_boost_controls[] = { 142 SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA, 6, 1, 1), 143 SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0), 144 SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0), 145 }; 146 147 static const struct snd_kcontrol_new wm8510_micpga_controls[] = { 148 SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0), 149 SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0), 150 SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0), 151 }; 152 153 static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = { 154 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0, 155 &wm8510_speaker_mixer_controls[0], 156 ARRAY_SIZE(wm8510_speaker_mixer_controls)), 157 SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0, 158 &wm8510_mono_mixer_controls[0], 159 ARRAY_SIZE(wm8510_mono_mixer_controls)), 160 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0), 161 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0), 162 SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0), 163 SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0), 164 SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0), 165 SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0), 166 167 SND_SOC_DAPM_MIXER("Mic PGA", WM8510_POWER2, 2, 0, 168 &wm8510_micpga_controls[0], 169 ARRAY_SIZE(wm8510_micpga_controls)), 170 SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0, 171 &wm8510_boost_controls[0], 172 ARRAY_SIZE(wm8510_boost_controls)), 173 174 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0), 175 176 SND_SOC_DAPM_INPUT("MICN"), 177 SND_SOC_DAPM_INPUT("MICP"), 178 SND_SOC_DAPM_INPUT("AUX"), 179 SND_SOC_DAPM_OUTPUT("MONOOUT"), 180 SND_SOC_DAPM_OUTPUT("SPKOUTP"), 181 SND_SOC_DAPM_OUTPUT("SPKOUTN"), 182 }; 183 184 static const struct snd_soc_dapm_route audio_map[] = { 185 /* Mono output mixer */ 186 {"Mono Mixer", "PCM Playback Switch", "DAC"}, 187 {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, 188 {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, 189 190 /* Speaker output mixer */ 191 {"Speaker Mixer", "PCM Playback Switch", "DAC"}, 192 {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, 193 {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, 194 195 /* Outputs */ 196 {"Mono Out", NULL, "Mono Mixer"}, 197 {"MONOOUT", NULL, "Mono Out"}, 198 {"SpkN Out", NULL, "Speaker Mixer"}, 199 {"SpkP Out", NULL, "Speaker Mixer"}, 200 {"SPKOUTN", NULL, "SpkN Out"}, 201 {"SPKOUTP", NULL, "SpkP Out"}, 202 203 /* Microphone PGA */ 204 {"Mic PGA", "MICN Switch", "MICN"}, 205 {"Mic PGA", "MICP Switch", "MICP"}, 206 { "Mic PGA", "AUX Switch", "Aux Input" }, 207 208 /* Boost Mixer */ 209 {"Boost Mixer", "Mic PGA Switch", "Mic PGA"}, 210 {"Boost Mixer", "Mic Volume", "MICP"}, 211 {"Boost Mixer", "Aux Volume", "Aux Input"}, 212 213 {"ADC", NULL, "Boost Mixer"}, 214 }; 215 216 static int wm8510_add_widgets(struct snd_soc_codec *codec) 217 { 218 struct snd_soc_dapm_context *dapm = &codec->dapm; 219 220 snd_soc_dapm_new_controls(dapm, wm8510_dapm_widgets, 221 ARRAY_SIZE(wm8510_dapm_widgets)); 222 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); 223 224 return 0; 225 } 226 227 struct pll_ { 228 unsigned int pre_div:4; /* prescale - 1 */ 229 unsigned int n:4; 230 unsigned int k; 231 }; 232 233 static struct pll_ pll_div; 234 235 /* The size in bits of the pll divide multiplied by 10 236 * to allow rounding later */ 237 #define FIXED_PLL_SIZE ((1 << 24) * 10) 238 239 static void pll_factors(unsigned int target, unsigned int source) 240 { 241 unsigned long long Kpart; 242 unsigned int K, Ndiv, Nmod; 243 244 Ndiv = target / source; 245 if (Ndiv < 6) { 246 source >>= 1; 247 pll_div.pre_div = 1; 248 Ndiv = target / source; 249 } else 250 pll_div.pre_div = 0; 251 252 if ((Ndiv < 6) || (Ndiv > 12)) 253 printk(KERN_WARNING 254 "WM8510 N value %u outwith recommended range!d\n", 255 Ndiv); 256 257 pll_div.n = Ndiv; 258 Nmod = target % source; 259 Kpart = FIXED_PLL_SIZE * (long long)Nmod; 260 261 do_div(Kpart, source); 262 263 K = Kpart & 0xFFFFFFFF; 264 265 /* Check if we need to round */ 266 if ((K % 10) >= 5) 267 K += 5; 268 269 /* Move down to proper range now rounding is done */ 270 K /= 10; 271 272 pll_div.k = K; 273 } 274 275 static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, 276 int source, unsigned int freq_in, unsigned int freq_out) 277 { 278 struct snd_soc_codec *codec = codec_dai->codec; 279 u16 reg; 280 281 if (freq_in == 0 || freq_out == 0) { 282 /* Clock CODEC directly from MCLK */ 283 reg = snd_soc_read(codec, WM8510_CLOCK); 284 snd_soc_write(codec, WM8510_CLOCK, reg & 0x0ff); 285 286 /* Turn off PLL */ 287 reg = snd_soc_read(codec, WM8510_POWER1); 288 snd_soc_write(codec, WM8510_POWER1, reg & 0x1df); 289 return 0; 290 } 291 292 pll_factors(freq_out*4, freq_in); 293 294 snd_soc_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n); 295 snd_soc_write(codec, WM8510_PLLK1, pll_div.k >> 18); 296 snd_soc_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff); 297 snd_soc_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff); 298 reg = snd_soc_read(codec, WM8510_POWER1); 299 snd_soc_write(codec, WM8510_POWER1, reg | 0x020); 300 301 /* Run CODEC from PLL instead of MCLK */ 302 reg = snd_soc_read(codec, WM8510_CLOCK); 303 snd_soc_write(codec, WM8510_CLOCK, reg | 0x100); 304 305 return 0; 306 } 307 308 /* 309 * Configure WM8510 clock dividers. 310 */ 311 static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 312 int div_id, int div) 313 { 314 struct snd_soc_codec *codec = codec_dai->codec; 315 u16 reg; 316 317 switch (div_id) { 318 case WM8510_OPCLKDIV: 319 reg = snd_soc_read(codec, WM8510_GPIO) & 0x1cf; 320 snd_soc_write(codec, WM8510_GPIO, reg | div); 321 break; 322 case WM8510_MCLKDIV: 323 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x11f; 324 snd_soc_write(codec, WM8510_CLOCK, reg | div); 325 break; 326 case WM8510_ADCCLK: 327 reg = snd_soc_read(codec, WM8510_ADC) & 0x1f7; 328 snd_soc_write(codec, WM8510_ADC, reg | div); 329 break; 330 case WM8510_DACCLK: 331 reg = snd_soc_read(codec, WM8510_DAC) & 0x1f7; 332 snd_soc_write(codec, WM8510_DAC, reg | div); 333 break; 334 case WM8510_BCLKDIV: 335 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x1e3; 336 snd_soc_write(codec, WM8510_CLOCK, reg | div); 337 break; 338 default: 339 return -EINVAL; 340 } 341 342 return 0; 343 } 344 345 static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai, 346 unsigned int fmt) 347 { 348 struct snd_soc_codec *codec = codec_dai->codec; 349 u16 iface = 0; 350 u16 clk = snd_soc_read(codec, WM8510_CLOCK) & 0x1fe; 351 352 /* set master/slave audio interface */ 353 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 354 case SND_SOC_DAIFMT_CBM_CFM: 355 clk |= 0x0001; 356 break; 357 case SND_SOC_DAIFMT_CBS_CFS: 358 break; 359 default: 360 return -EINVAL; 361 } 362 363 /* interface format */ 364 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 365 case SND_SOC_DAIFMT_I2S: 366 iface |= 0x0010; 367 break; 368 case SND_SOC_DAIFMT_RIGHT_J: 369 break; 370 case SND_SOC_DAIFMT_LEFT_J: 371 iface |= 0x0008; 372 break; 373 case SND_SOC_DAIFMT_DSP_A: 374 iface |= 0x00018; 375 break; 376 default: 377 return -EINVAL; 378 } 379 380 /* clock inversion */ 381 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 382 case SND_SOC_DAIFMT_NB_NF: 383 break; 384 case SND_SOC_DAIFMT_IB_IF: 385 iface |= 0x0180; 386 break; 387 case SND_SOC_DAIFMT_IB_NF: 388 iface |= 0x0100; 389 break; 390 case SND_SOC_DAIFMT_NB_IF: 391 iface |= 0x0080; 392 break; 393 default: 394 return -EINVAL; 395 } 396 397 snd_soc_write(codec, WM8510_IFACE, iface); 398 snd_soc_write(codec, WM8510_CLOCK, clk); 399 return 0; 400 } 401 402 static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream, 403 struct snd_pcm_hw_params *params, 404 struct snd_soc_dai *dai) 405 { 406 struct snd_soc_pcm_runtime *rtd = substream->private_data; 407 struct snd_soc_codec *codec = rtd->codec; 408 u16 iface = snd_soc_read(codec, WM8510_IFACE) & 0x19f; 409 u16 adn = snd_soc_read(codec, WM8510_ADD) & 0x1f1; 410 411 /* bit size */ 412 switch (params_format(params)) { 413 case SNDRV_PCM_FORMAT_S16_LE: 414 break; 415 case SNDRV_PCM_FORMAT_S20_3LE: 416 iface |= 0x0020; 417 break; 418 case SNDRV_PCM_FORMAT_S24_LE: 419 iface |= 0x0040; 420 break; 421 case SNDRV_PCM_FORMAT_S32_LE: 422 iface |= 0x0060; 423 break; 424 } 425 426 /* filter coefficient */ 427 switch (params_rate(params)) { 428 case 8000: 429 adn |= 0x5 << 1; 430 break; 431 case 11025: 432 adn |= 0x4 << 1; 433 break; 434 case 16000: 435 adn |= 0x3 << 1; 436 break; 437 case 22050: 438 adn |= 0x2 << 1; 439 break; 440 case 32000: 441 adn |= 0x1 << 1; 442 break; 443 case 44100: 444 case 48000: 445 break; 446 } 447 448 snd_soc_write(codec, WM8510_IFACE, iface); 449 snd_soc_write(codec, WM8510_ADD, adn); 450 return 0; 451 } 452 453 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->dapm.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->dapm.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 static struct snd_soc_dai_driver 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 }; 534 535 static int wm8510_suspend(struct snd_soc_codec *codec, pm_message_t state) 536 { 537 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 538 return 0; 539 } 540 541 static int wm8510_resume(struct snd_soc_codec *codec) 542 { 543 int i; 544 u8 data[2]; 545 u16 *cache = codec->reg_cache; 546 547 /* Sync reg_cache with the hardware */ 548 for (i = 0; i < ARRAY_SIZE(wm8510_reg); i++) { 549 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 550 data[1] = cache[i] & 0x00ff; 551 codec->hw_write(codec->control_data, data, 2); 552 } 553 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 554 555 return 0; 556 } 557 558 static int wm8510_probe(struct snd_soc_codec *codec) 559 { 560 struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec); 561 int ret; 562 563 ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8510->control_type); 564 if (ret < 0) { 565 printk(KERN_ERR "wm8510: failed to set cache I/O: %d\n", ret); 566 return ret; 567 } 568 569 wm8510_reset(codec); 570 571 /* power on device */ 572 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 573 snd_soc_add_controls(codec, wm8510_snd_controls, 574 ARRAY_SIZE(wm8510_snd_controls)); 575 wm8510_add_widgets(codec); 576 577 return ret; 578 } 579 580 /* power down chip */ 581 static int wm8510_remove(struct snd_soc_codec *codec) 582 { 583 struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec); 584 585 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); 586 kfree(wm8510); 587 return 0; 588 } 589 590 static struct snd_soc_codec_driver soc_codec_dev_wm8510 = { 591 .probe = wm8510_probe, 592 .remove = wm8510_remove, 593 .suspend = wm8510_suspend, 594 .resume = wm8510_resume, 595 .set_bias_level = wm8510_set_bias_level, 596 .reg_cache_size = ARRAY_SIZE(wm8510_reg), 597 .reg_word_size = sizeof(u16), 598 .reg_cache_default =wm8510_reg, 599 }; 600 601 #if defined(CONFIG_SPI_MASTER) 602 static int __devinit wm8510_spi_probe(struct spi_device *spi) 603 { 604 struct wm8510_priv *wm8510; 605 int ret; 606 607 wm8510 = kzalloc(sizeof(struct wm8510_priv), GFP_KERNEL); 608 if (wm8510 == NULL) 609 return -ENOMEM; 610 611 wm8510->control_type = SND_SOC_SPI; 612 spi_set_drvdata(spi, wm8510); 613 614 ret = snd_soc_register_codec(&spi->dev, 615 &soc_codec_dev_wm8510, &wm8510_dai, 1); 616 if (ret < 0) 617 kfree(wm8510); 618 return ret; 619 } 620 621 static int __devexit wm8510_spi_remove(struct spi_device *spi) 622 { 623 snd_soc_unregister_codec(&spi->dev); 624 return 0; 625 } 626 627 static struct spi_driver wm8510_spi_driver = { 628 .driver = { 629 .name = "wm8510", 630 .owner = THIS_MODULE, 631 }, 632 .probe = wm8510_spi_probe, 633 .remove = __devexit_p(wm8510_spi_remove), 634 }; 635 #endif /* CONFIG_SPI_MASTER */ 636 637 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 638 static __devinit int wm8510_i2c_probe(struct i2c_client *i2c, 639 const struct i2c_device_id *id) 640 { 641 struct wm8510_priv *wm8510; 642 int ret; 643 644 wm8510 = kzalloc(sizeof(struct wm8510_priv), GFP_KERNEL); 645 if (wm8510 == NULL) 646 return -ENOMEM; 647 648 i2c_set_clientdata(i2c, wm8510); 649 wm8510->control_type = SND_SOC_I2C; 650 651 ret = snd_soc_register_codec(&i2c->dev, 652 &soc_codec_dev_wm8510, &wm8510_dai, 1); 653 if (ret < 0) 654 kfree(wm8510); 655 return ret; 656 } 657 658 static __devexit int wm8510_i2c_remove(struct i2c_client *client) 659 { 660 snd_soc_unregister_codec(&client->dev); 661 return 0; 662 } 663 664 static const struct i2c_device_id wm8510_i2c_id[] = { 665 { "wm8510", 0 }, 666 { } 667 }; 668 MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id); 669 670 static struct i2c_driver wm8510_i2c_driver = { 671 .driver = { 672 .name = "wm8510-codec", 673 .owner = THIS_MODULE, 674 }, 675 .probe = wm8510_i2c_probe, 676 .remove = __devexit_p(wm8510_i2c_remove), 677 .id_table = wm8510_i2c_id, 678 }; 679 #endif 680 681 static int __init wm8510_modinit(void) 682 { 683 int ret = 0; 684 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 685 ret = i2c_add_driver(&wm8510_i2c_driver); 686 if (ret != 0) { 687 printk(KERN_ERR "Failed to register WM8510 I2C driver: %d\n", 688 ret); 689 } 690 #endif 691 #if defined(CONFIG_SPI_MASTER) 692 ret = spi_register_driver(&wm8510_spi_driver); 693 if (ret != 0) { 694 printk(KERN_ERR "Failed to register WM8510 SPI driver: %d\n", 695 ret); 696 } 697 #endif 698 return ret; 699 } 700 module_init(wm8510_modinit); 701 702 static void __exit wm8510_exit(void) 703 { 704 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 705 i2c_del_driver(&wm8510_i2c_driver); 706 #endif 707 #if defined(CONFIG_SPI_MASTER) 708 spi_unregister_driver(&wm8510_spi_driver); 709 #endif 710 } 711 module_exit(wm8510_exit); 712 713 MODULE_DESCRIPTION("ASoC WM8510 driver"); 714 MODULE_AUTHOR("Liam Girdwood"); 715 MODULE_LICENSE("GPL"); 716