1 /* 2 * wm8770.c -- WM8770 ALSA SoC Audio driver 3 * 4 * Copyright 2010 Wolfson Microelectronics plc 5 * 6 * Author: Dimitris Papastamos <dp@opensource.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/init.h> 16 #include <linux/delay.h> 17 #include <linux/of_device.h> 18 #include <linux/pm.h> 19 #include <linux/spi/spi.h> 20 #include <linux/regmap.h> 21 #include <linux/regulator/consumer.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 #include <sound/tlv.h> 29 30 #include "wm8770.h" 31 32 #define WM8770_NUM_SUPPLIES 3 33 static const char *wm8770_supply_names[WM8770_NUM_SUPPLIES] = { 34 "AVDD1", 35 "AVDD2", 36 "DVDD" 37 }; 38 39 static const struct reg_default wm8770_reg_defaults[] = { 40 { 0, 0x7f }, 41 { 1, 0x7f }, 42 { 2, 0x7f }, 43 { 3, 0x7f }, 44 { 4, 0x7f }, 45 { 5, 0x7f }, 46 { 6, 0x7f }, 47 { 7, 0x7f }, 48 { 8, 0x7f }, 49 { 9, 0xff }, 50 { 10, 0xff }, 51 { 11, 0xff }, 52 { 12, 0xff }, 53 { 13, 0xff }, 54 { 14, 0xff }, 55 { 15, 0xff }, 56 { 16, 0xff }, 57 { 17, 0xff }, 58 { 18, 0 }, 59 { 19, 0x90 }, 60 { 20, 0 }, 61 { 21, 0 }, 62 { 22, 0x22 }, 63 { 23, 0x22 }, 64 { 24, 0x3e }, 65 { 25, 0xc }, 66 { 26, 0xc }, 67 { 27, 0x100 }, 68 { 28, 0x189 }, 69 { 29, 0x189 }, 70 { 30, 0x8770 }, 71 }; 72 73 static bool wm8770_volatile_reg(struct device *dev, unsigned int reg) 74 { 75 switch (reg) { 76 case WM8770_RESET: 77 return true; 78 default: 79 return false; 80 } 81 } 82 83 struct wm8770_priv { 84 struct regmap *regmap; 85 struct regulator_bulk_data supplies[WM8770_NUM_SUPPLIES]; 86 struct notifier_block disable_nb[WM8770_NUM_SUPPLIES]; 87 struct snd_soc_codec *codec; 88 int sysclk; 89 }; 90 91 static int vout12supply_event(struct snd_soc_dapm_widget *w, 92 struct snd_kcontrol *kcontrol, int event); 93 static int vout34supply_event(struct snd_soc_dapm_widget *w, 94 struct snd_kcontrol *kcontrol, int event); 95 96 /* 97 * We can't use the same notifier block for more than one supply and 98 * there's no way I can see to get from a callback to the caller 99 * except container_of(). 100 */ 101 #define WM8770_REGULATOR_EVENT(n) \ 102 static int wm8770_regulator_event_##n(struct notifier_block *nb, \ 103 unsigned long event, void *data) \ 104 { \ 105 struct wm8770_priv *wm8770 = container_of(nb, struct wm8770_priv, \ 106 disable_nb[n]); \ 107 if (event & REGULATOR_EVENT_DISABLE) { \ 108 regcache_mark_dirty(wm8770->regmap); \ 109 } \ 110 return 0; \ 111 } 112 113 WM8770_REGULATOR_EVENT(0) 114 WM8770_REGULATOR_EVENT(1) 115 WM8770_REGULATOR_EVENT(2) 116 117 static const DECLARE_TLV_DB_SCALE(adc_tlv, -1200, 100, 0); 118 static const DECLARE_TLV_DB_SCALE(dac_dig_tlv, -12750, 50, 1); 119 static const DECLARE_TLV_DB_SCALE(dac_alg_tlv, -12700, 100, 1); 120 121 static const char *dac_phase_text[][2] = { 122 { "DAC1 Normal", "DAC1 Inverted" }, 123 { "DAC2 Normal", "DAC2 Inverted" }, 124 { "DAC3 Normal", "DAC3 Inverted" }, 125 { "DAC4 Normal", "DAC4 Inverted" }, 126 }; 127 128 static const struct soc_enum dac_phase[] = { 129 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 0, 1, 2, dac_phase_text[0]), 130 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 2, 3, 2, dac_phase_text[1]), 131 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 4, 5, 2, dac_phase_text[2]), 132 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 6, 7, 2, dac_phase_text[3]), 133 }; 134 135 static const struct snd_kcontrol_new wm8770_snd_controls[] = { 136 /* global DAC playback controls */ 137 SOC_SINGLE_TLV("DAC Playback Volume", WM8770_MSDIGVOL, 0, 255, 0, 138 dac_dig_tlv), 139 SOC_SINGLE("DAC Playback Switch", WM8770_DACMUTE, 4, 1, 1), 140 SOC_SINGLE("DAC Playback ZC Switch", WM8770_DACCTRL1, 0, 1, 0), 141 142 /* global VOUT playback controls */ 143 SOC_SINGLE_TLV("VOUT Playback Volume", WM8770_MSALGVOL, 0, 127, 0, 144 dac_alg_tlv), 145 SOC_SINGLE("VOUT Playback ZC Switch", WM8770_MSALGVOL, 7, 1, 0), 146 147 /* VOUT1/2/3/4 specific controls */ 148 SOC_DOUBLE_R_TLV("VOUT1 Playback Volume", WM8770_VOUT1LVOL, 149 WM8770_VOUT1RVOL, 0, 127, 0, dac_alg_tlv), 150 SOC_DOUBLE_R("VOUT1 Playback ZC Switch", WM8770_VOUT1LVOL, 151 WM8770_VOUT1RVOL, 7, 1, 0), 152 SOC_DOUBLE_R_TLV("VOUT2 Playback Volume", WM8770_VOUT2LVOL, 153 WM8770_VOUT2RVOL, 0, 127, 0, dac_alg_tlv), 154 SOC_DOUBLE_R("VOUT2 Playback ZC Switch", WM8770_VOUT2LVOL, 155 WM8770_VOUT2RVOL, 7, 1, 0), 156 SOC_DOUBLE_R_TLV("VOUT3 Playback Volume", WM8770_VOUT3LVOL, 157 WM8770_VOUT3RVOL, 0, 127, 0, dac_alg_tlv), 158 SOC_DOUBLE_R("VOUT3 Playback ZC Switch", WM8770_VOUT3LVOL, 159 WM8770_VOUT3RVOL, 7, 1, 0), 160 SOC_DOUBLE_R_TLV("VOUT4 Playback Volume", WM8770_VOUT4LVOL, 161 WM8770_VOUT4RVOL, 0, 127, 0, dac_alg_tlv), 162 SOC_DOUBLE_R("VOUT4 Playback ZC Switch", WM8770_VOUT4LVOL, 163 WM8770_VOUT4RVOL, 7, 1, 0), 164 165 /* DAC1/2/3/4 specific controls */ 166 SOC_DOUBLE_R_TLV("DAC1 Playback Volume", WM8770_DAC1LVOL, 167 WM8770_DAC1RVOL, 0, 255, 0, dac_dig_tlv), 168 SOC_SINGLE("DAC1 Deemphasis Switch", WM8770_DACCTRL2, 0, 1, 0), 169 SOC_ENUM("DAC1 Phase", dac_phase[0]), 170 SOC_DOUBLE_R_TLV("DAC2 Playback Volume", WM8770_DAC2LVOL, 171 WM8770_DAC2RVOL, 0, 255, 0, dac_dig_tlv), 172 SOC_SINGLE("DAC2 Deemphasis Switch", WM8770_DACCTRL2, 1, 1, 0), 173 SOC_ENUM("DAC2 Phase", dac_phase[1]), 174 SOC_DOUBLE_R_TLV("DAC3 Playback Volume", WM8770_DAC3LVOL, 175 WM8770_DAC3RVOL, 0, 255, 0, dac_dig_tlv), 176 SOC_SINGLE("DAC3 Deemphasis Switch", WM8770_DACCTRL2, 2, 1, 0), 177 SOC_ENUM("DAC3 Phase", dac_phase[2]), 178 SOC_DOUBLE_R_TLV("DAC4 Playback Volume", WM8770_DAC4LVOL, 179 WM8770_DAC4RVOL, 0, 255, 0, dac_dig_tlv), 180 SOC_SINGLE("DAC4 Deemphasis Switch", WM8770_DACCTRL2, 3, 1, 0), 181 SOC_ENUM("DAC4 Phase", dac_phase[3]), 182 183 /* ADC specific controls */ 184 SOC_DOUBLE_R_TLV("Capture Volume", WM8770_ADCLCTRL, WM8770_ADCRCTRL, 185 0, 31, 0, adc_tlv), 186 SOC_DOUBLE_R("Capture Switch", WM8770_ADCLCTRL, WM8770_ADCRCTRL, 187 5, 1, 1), 188 189 /* other controls */ 190 SOC_SINGLE("ADC 128x Oversampling Switch", WM8770_MSTRCTRL, 3, 1, 0), 191 SOC_SINGLE("ADC Highpass Filter Switch", WM8770_IFACECTRL, 8, 1, 1) 192 }; 193 194 static const char *ain_text[] = { 195 "AIN1", "AIN2", "AIN3", "AIN4", 196 "AIN5", "AIN6", "AIN7", "AIN8" 197 }; 198 199 static SOC_ENUM_DOUBLE_DECL(ain_enum, 200 WM8770_ADCMUX, 0, 4, ain_text); 201 202 static const struct snd_kcontrol_new ain_mux = 203 SOC_DAPM_ENUM("Capture Mux", ain_enum); 204 205 static const struct snd_kcontrol_new vout1_mix_controls[] = { 206 SOC_DAPM_SINGLE("DAC1 Switch", WM8770_OUTMUX1, 0, 1, 0), 207 SOC_DAPM_SINGLE("AUX1 Switch", WM8770_OUTMUX1, 1, 1, 0), 208 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 2, 1, 0) 209 }; 210 211 static const struct snd_kcontrol_new vout2_mix_controls[] = { 212 SOC_DAPM_SINGLE("DAC2 Switch", WM8770_OUTMUX1, 3, 1, 0), 213 SOC_DAPM_SINGLE("AUX2 Switch", WM8770_OUTMUX1, 4, 1, 0), 214 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 5, 1, 0) 215 }; 216 217 static const struct snd_kcontrol_new vout3_mix_controls[] = { 218 SOC_DAPM_SINGLE("DAC3 Switch", WM8770_OUTMUX2, 0, 1, 0), 219 SOC_DAPM_SINGLE("AUX3 Switch", WM8770_OUTMUX2, 1, 1, 0), 220 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 2, 1, 0) 221 }; 222 223 static const struct snd_kcontrol_new vout4_mix_controls[] = { 224 SOC_DAPM_SINGLE("DAC4 Switch", WM8770_OUTMUX2, 3, 1, 0), 225 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 4, 1, 0) 226 }; 227 228 static const struct snd_soc_dapm_widget wm8770_dapm_widgets[] = { 229 SND_SOC_DAPM_INPUT("AUX1"), 230 SND_SOC_DAPM_INPUT("AUX2"), 231 SND_SOC_DAPM_INPUT("AUX3"), 232 233 SND_SOC_DAPM_INPUT("AIN1"), 234 SND_SOC_DAPM_INPUT("AIN2"), 235 SND_SOC_DAPM_INPUT("AIN3"), 236 SND_SOC_DAPM_INPUT("AIN4"), 237 SND_SOC_DAPM_INPUT("AIN5"), 238 SND_SOC_DAPM_INPUT("AIN6"), 239 SND_SOC_DAPM_INPUT("AIN7"), 240 SND_SOC_DAPM_INPUT("AIN8"), 241 242 SND_SOC_DAPM_MUX("Capture Mux", WM8770_ADCMUX, 8, 1, &ain_mux), 243 244 SND_SOC_DAPM_ADC("ADC", "Capture", WM8770_PWDNCTRL, 1, 1), 245 246 SND_SOC_DAPM_DAC("DAC1", "Playback", WM8770_PWDNCTRL, 2, 1), 247 SND_SOC_DAPM_DAC("DAC2", "Playback", WM8770_PWDNCTRL, 3, 1), 248 SND_SOC_DAPM_DAC("DAC3", "Playback", WM8770_PWDNCTRL, 4, 1), 249 SND_SOC_DAPM_DAC("DAC4", "Playback", WM8770_PWDNCTRL, 5, 1), 250 251 SND_SOC_DAPM_SUPPLY("VOUT12 Supply", SND_SOC_NOPM, 0, 0, 252 vout12supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 253 SND_SOC_DAPM_SUPPLY("VOUT34 Supply", SND_SOC_NOPM, 0, 0, 254 vout34supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 255 256 SND_SOC_DAPM_MIXER("VOUT1 Mixer", SND_SOC_NOPM, 0, 0, 257 vout1_mix_controls, ARRAY_SIZE(vout1_mix_controls)), 258 SND_SOC_DAPM_MIXER("VOUT2 Mixer", SND_SOC_NOPM, 0, 0, 259 vout2_mix_controls, ARRAY_SIZE(vout2_mix_controls)), 260 SND_SOC_DAPM_MIXER("VOUT3 Mixer", SND_SOC_NOPM, 0, 0, 261 vout3_mix_controls, ARRAY_SIZE(vout3_mix_controls)), 262 SND_SOC_DAPM_MIXER("VOUT4 Mixer", SND_SOC_NOPM, 0, 0, 263 vout4_mix_controls, ARRAY_SIZE(vout4_mix_controls)), 264 265 SND_SOC_DAPM_OUTPUT("VOUT1"), 266 SND_SOC_DAPM_OUTPUT("VOUT2"), 267 SND_SOC_DAPM_OUTPUT("VOUT3"), 268 SND_SOC_DAPM_OUTPUT("VOUT4") 269 }; 270 271 static const struct snd_soc_dapm_route wm8770_intercon[] = { 272 { "Capture Mux", "AIN1", "AIN1" }, 273 { "Capture Mux", "AIN2", "AIN2" }, 274 { "Capture Mux", "AIN3", "AIN3" }, 275 { "Capture Mux", "AIN4", "AIN4" }, 276 { "Capture Mux", "AIN5", "AIN5" }, 277 { "Capture Mux", "AIN6", "AIN6" }, 278 { "Capture Mux", "AIN7", "AIN7" }, 279 { "Capture Mux", "AIN8", "AIN8" }, 280 281 { "ADC", NULL, "Capture Mux" }, 282 283 { "VOUT1 Mixer", NULL, "VOUT12 Supply" }, 284 { "VOUT1 Mixer", "DAC1 Switch", "DAC1" }, 285 { "VOUT1 Mixer", "AUX1 Switch", "AUX1" }, 286 { "VOUT1 Mixer", "Bypass Switch", "Capture Mux" }, 287 288 { "VOUT2 Mixer", NULL, "VOUT12 Supply" }, 289 { "VOUT2 Mixer", "DAC2 Switch", "DAC2" }, 290 { "VOUT2 Mixer", "AUX2 Switch", "AUX2" }, 291 { "VOUT2 Mixer", "Bypass Switch", "Capture Mux" }, 292 293 { "VOUT3 Mixer", NULL, "VOUT34 Supply" }, 294 { "VOUT3 Mixer", "DAC3 Switch", "DAC3" }, 295 { "VOUT3 Mixer", "AUX3 Switch", "AUX3" }, 296 { "VOUT3 Mixer", "Bypass Switch", "Capture Mux" }, 297 298 { "VOUT4 Mixer", NULL, "VOUT34 Supply" }, 299 { "VOUT4 Mixer", "DAC4 Switch", "DAC4" }, 300 { "VOUT4 Mixer", "Bypass Switch", "Capture Mux" }, 301 302 { "VOUT1", NULL, "VOUT1 Mixer" }, 303 { "VOUT2", NULL, "VOUT2 Mixer" }, 304 { "VOUT3", NULL, "VOUT3 Mixer" }, 305 { "VOUT4", NULL, "VOUT4 Mixer" } 306 }; 307 308 static int vout12supply_event(struct snd_soc_dapm_widget *w, 309 struct snd_kcontrol *kcontrol, int event) 310 { 311 struct snd_soc_codec *codec; 312 313 codec = w->codec; 314 315 switch (event) { 316 case SND_SOC_DAPM_PRE_PMU: 317 snd_soc_update_bits(codec, WM8770_OUTMUX1, 0x180, 0); 318 break; 319 case SND_SOC_DAPM_POST_PMD: 320 snd_soc_update_bits(codec, WM8770_OUTMUX1, 0x180, 0x180); 321 break; 322 } 323 324 return 0; 325 } 326 327 static int vout34supply_event(struct snd_soc_dapm_widget *w, 328 struct snd_kcontrol *kcontrol, int event) 329 { 330 struct snd_soc_codec *codec; 331 332 codec = w->codec; 333 334 switch (event) { 335 case SND_SOC_DAPM_PRE_PMU: 336 snd_soc_update_bits(codec, WM8770_OUTMUX2, 0x180, 0); 337 break; 338 case SND_SOC_DAPM_POST_PMD: 339 snd_soc_update_bits(codec, WM8770_OUTMUX2, 0x180, 0x180); 340 break; 341 } 342 343 return 0; 344 } 345 346 static int wm8770_reset(struct snd_soc_codec *codec) 347 { 348 return snd_soc_write(codec, WM8770_RESET, 0); 349 } 350 351 static int wm8770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 352 { 353 struct snd_soc_codec *codec; 354 int iface, master; 355 356 codec = dai->codec; 357 358 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 359 case SND_SOC_DAIFMT_CBM_CFM: 360 master = 0x100; 361 break; 362 case SND_SOC_DAIFMT_CBS_CFS: 363 master = 0; 364 break; 365 default: 366 return -EINVAL; 367 } 368 369 iface = 0; 370 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 371 case SND_SOC_DAIFMT_I2S: 372 iface |= 0x2; 373 break; 374 case SND_SOC_DAIFMT_RIGHT_J: 375 break; 376 case SND_SOC_DAIFMT_LEFT_J: 377 iface |= 0x1; 378 break; 379 default: 380 return -EINVAL; 381 } 382 383 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 384 case SND_SOC_DAIFMT_NB_NF: 385 break; 386 case SND_SOC_DAIFMT_IB_IF: 387 iface |= 0xc; 388 break; 389 case SND_SOC_DAIFMT_IB_NF: 390 iface |= 0x8; 391 break; 392 case SND_SOC_DAIFMT_NB_IF: 393 iface |= 0x4; 394 break; 395 default: 396 return -EINVAL; 397 } 398 399 snd_soc_update_bits(codec, WM8770_IFACECTRL, 0xf, iface); 400 snd_soc_update_bits(codec, WM8770_MSTRCTRL, 0x100, master); 401 402 return 0; 403 } 404 405 static const int mclk_ratios[] = { 406 128, 407 192, 408 256, 409 384, 410 512, 411 768 412 }; 413 414 static int wm8770_hw_params(struct snd_pcm_substream *substream, 415 struct snd_pcm_hw_params *params, 416 struct snd_soc_dai *dai) 417 { 418 struct snd_soc_codec *codec; 419 struct wm8770_priv *wm8770; 420 int i; 421 int iface; 422 int shift; 423 int ratio; 424 425 codec = dai->codec; 426 wm8770 = snd_soc_codec_get_drvdata(codec); 427 428 iface = 0; 429 switch (params_format(params)) { 430 case SNDRV_PCM_FORMAT_S16_LE: 431 break; 432 case SNDRV_PCM_FORMAT_S20_3LE: 433 iface |= 0x10; 434 break; 435 case SNDRV_PCM_FORMAT_S24_LE: 436 iface |= 0x20; 437 break; 438 case SNDRV_PCM_FORMAT_S32_LE: 439 iface |= 0x30; 440 break; 441 } 442 443 switch (substream->stream) { 444 case SNDRV_PCM_STREAM_PLAYBACK: 445 i = 0; 446 shift = 4; 447 break; 448 case SNDRV_PCM_STREAM_CAPTURE: 449 i = 2; 450 shift = 0; 451 break; 452 default: 453 return -EINVAL; 454 } 455 456 /* Only need to set MCLK/LRCLK ratio if we're master */ 457 if (snd_soc_read(codec, WM8770_MSTRCTRL) & 0x100) { 458 for (; i < ARRAY_SIZE(mclk_ratios); ++i) { 459 ratio = wm8770->sysclk / params_rate(params); 460 if (ratio == mclk_ratios[i]) 461 break; 462 } 463 464 if (i == ARRAY_SIZE(mclk_ratios)) { 465 dev_err(codec->dev, 466 "Unable to configure MCLK ratio %d/%d\n", 467 wm8770->sysclk, params_rate(params)); 468 return -EINVAL; 469 } 470 471 dev_dbg(codec->dev, "MCLK is %dfs\n", mclk_ratios[i]); 472 473 snd_soc_update_bits(codec, WM8770_MSTRCTRL, 0x7 << shift, 474 i << shift); 475 } 476 477 snd_soc_update_bits(codec, WM8770_IFACECTRL, 0x30, iface); 478 479 return 0; 480 } 481 482 static int wm8770_mute(struct snd_soc_dai *dai, int mute) 483 { 484 struct snd_soc_codec *codec; 485 486 codec = dai->codec; 487 return snd_soc_update_bits(codec, WM8770_DACMUTE, 0x10, 488 !!mute << 4); 489 } 490 491 static int wm8770_set_sysclk(struct snd_soc_dai *dai, 492 int clk_id, unsigned int freq, int dir) 493 { 494 struct snd_soc_codec *codec; 495 struct wm8770_priv *wm8770; 496 497 codec = dai->codec; 498 wm8770 = snd_soc_codec_get_drvdata(codec); 499 wm8770->sysclk = freq; 500 return 0; 501 } 502 503 static int wm8770_set_bias_level(struct snd_soc_codec *codec, 504 enum snd_soc_bias_level level) 505 { 506 int ret; 507 struct wm8770_priv *wm8770; 508 509 wm8770 = snd_soc_codec_get_drvdata(codec); 510 511 switch (level) { 512 case SND_SOC_BIAS_ON: 513 break; 514 case SND_SOC_BIAS_PREPARE: 515 break; 516 case SND_SOC_BIAS_STANDBY: 517 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { 518 ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies), 519 wm8770->supplies); 520 if (ret) { 521 dev_err(codec->dev, 522 "Failed to enable supplies: %d\n", 523 ret); 524 return ret; 525 } 526 527 regcache_sync(wm8770->regmap); 528 529 /* global powerup */ 530 snd_soc_write(codec, WM8770_PWDNCTRL, 0); 531 } 532 break; 533 case SND_SOC_BIAS_OFF: 534 /* global powerdown */ 535 snd_soc_write(codec, WM8770_PWDNCTRL, 1); 536 regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), 537 wm8770->supplies); 538 break; 539 } 540 541 codec->dapm.bias_level = level; 542 return 0; 543 } 544 545 #define WM8770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 546 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 547 548 static const struct snd_soc_dai_ops wm8770_dai_ops = { 549 .digital_mute = wm8770_mute, 550 .hw_params = wm8770_hw_params, 551 .set_fmt = wm8770_set_fmt, 552 .set_sysclk = wm8770_set_sysclk, 553 }; 554 555 static struct snd_soc_dai_driver wm8770_dai = { 556 .name = "wm8770-hifi", 557 .playback = { 558 .stream_name = "Playback", 559 .channels_min = 2, 560 .channels_max = 2, 561 .rates = SNDRV_PCM_RATE_8000_192000, 562 .formats = WM8770_FORMATS 563 }, 564 .capture = { 565 .stream_name = "Capture", 566 .channels_min = 2, 567 .channels_max = 2, 568 .rates = SNDRV_PCM_RATE_8000_96000, 569 .formats = WM8770_FORMATS 570 }, 571 .ops = &wm8770_dai_ops, 572 .symmetric_rates = 1 573 }; 574 575 static int wm8770_probe(struct snd_soc_codec *codec) 576 { 577 struct wm8770_priv *wm8770; 578 int ret; 579 580 wm8770 = snd_soc_codec_get_drvdata(codec); 581 wm8770->codec = codec; 582 583 ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies), 584 wm8770->supplies); 585 if (ret) { 586 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); 587 return ret; 588 } 589 590 ret = wm8770_reset(codec); 591 if (ret < 0) { 592 dev_err(codec->dev, "Failed to issue reset: %d\n", ret); 593 goto err_reg_enable; 594 } 595 596 /* latch the volume update bits */ 597 snd_soc_update_bits(codec, WM8770_MSDIGVOL, 0x100, 0x100); 598 snd_soc_update_bits(codec, WM8770_MSALGVOL, 0x100, 0x100); 599 snd_soc_update_bits(codec, WM8770_VOUT1RVOL, 0x100, 0x100); 600 snd_soc_update_bits(codec, WM8770_VOUT2RVOL, 0x100, 0x100); 601 snd_soc_update_bits(codec, WM8770_VOUT3RVOL, 0x100, 0x100); 602 snd_soc_update_bits(codec, WM8770_VOUT4RVOL, 0x100, 0x100); 603 snd_soc_update_bits(codec, WM8770_DAC1RVOL, 0x100, 0x100); 604 snd_soc_update_bits(codec, WM8770_DAC2RVOL, 0x100, 0x100); 605 snd_soc_update_bits(codec, WM8770_DAC3RVOL, 0x100, 0x100); 606 snd_soc_update_bits(codec, WM8770_DAC4RVOL, 0x100, 0x100); 607 608 /* mute all DACs */ 609 snd_soc_update_bits(codec, WM8770_DACMUTE, 0x10, 0x10); 610 611 err_reg_enable: 612 regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), wm8770->supplies); 613 return ret; 614 } 615 616 static struct snd_soc_codec_driver soc_codec_dev_wm8770 = { 617 .probe = wm8770_probe, 618 .set_bias_level = wm8770_set_bias_level, 619 .idle_bias_off = true, 620 621 .controls = wm8770_snd_controls, 622 .num_controls = ARRAY_SIZE(wm8770_snd_controls), 623 .dapm_widgets = wm8770_dapm_widgets, 624 .num_dapm_widgets = ARRAY_SIZE(wm8770_dapm_widgets), 625 .dapm_routes = wm8770_intercon, 626 .num_dapm_routes = ARRAY_SIZE(wm8770_intercon), 627 }; 628 629 static const struct of_device_id wm8770_of_match[] = { 630 { .compatible = "wlf,wm8770", }, 631 { } 632 }; 633 MODULE_DEVICE_TABLE(of, wm8770_of_match); 634 635 static const struct regmap_config wm8770_regmap = { 636 .reg_bits = 7, 637 .val_bits = 9, 638 .max_register = WM8770_RESET, 639 640 .reg_defaults = wm8770_reg_defaults, 641 .num_reg_defaults = ARRAY_SIZE(wm8770_reg_defaults), 642 .cache_type = REGCACHE_RBTREE, 643 644 .volatile_reg = wm8770_volatile_reg, 645 }; 646 647 static int wm8770_spi_probe(struct spi_device *spi) 648 { 649 struct wm8770_priv *wm8770; 650 int ret, i; 651 652 wm8770 = devm_kzalloc(&spi->dev, sizeof(struct wm8770_priv), 653 GFP_KERNEL); 654 if (!wm8770) 655 return -ENOMEM; 656 657 for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++) 658 wm8770->supplies[i].supply = wm8770_supply_names[i]; 659 660 ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8770->supplies), 661 wm8770->supplies); 662 if (ret) { 663 dev_err(&spi->dev, "Failed to request supplies: %d\n", ret); 664 return ret; 665 } 666 667 wm8770->disable_nb[0].notifier_call = wm8770_regulator_event_0; 668 wm8770->disable_nb[1].notifier_call = wm8770_regulator_event_1; 669 wm8770->disable_nb[2].notifier_call = wm8770_regulator_event_2; 670 671 /* This should really be moved into the regulator core */ 672 for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++) { 673 ret = regulator_register_notifier(wm8770->supplies[i].consumer, 674 &wm8770->disable_nb[i]); 675 if (ret) { 676 dev_err(&spi->dev, 677 "Failed to register regulator notifier: %d\n", 678 ret); 679 } 680 } 681 682 wm8770->regmap = devm_regmap_init_spi(spi, &wm8770_regmap); 683 if (IS_ERR(wm8770->regmap)) 684 return PTR_ERR(wm8770->regmap); 685 686 spi_set_drvdata(spi, wm8770); 687 688 ret = snd_soc_register_codec(&spi->dev, 689 &soc_codec_dev_wm8770, &wm8770_dai, 1); 690 691 return ret; 692 } 693 694 static int wm8770_spi_remove(struct spi_device *spi) 695 { 696 struct wm8770_priv *wm8770 = spi_get_drvdata(spi); 697 int i; 698 699 for (i = 0; i < ARRAY_SIZE(wm8770->supplies); ++i) 700 regulator_unregister_notifier(wm8770->supplies[i].consumer, 701 &wm8770->disable_nb[i]); 702 703 snd_soc_unregister_codec(&spi->dev); 704 705 return 0; 706 } 707 708 static struct spi_driver wm8770_spi_driver = { 709 .driver = { 710 .name = "wm8770", 711 .owner = THIS_MODULE, 712 .of_match_table = wm8770_of_match, 713 }, 714 .probe = wm8770_spi_probe, 715 .remove = wm8770_spi_remove 716 }; 717 718 module_spi_driver(wm8770_spi_driver); 719 720 MODULE_DESCRIPTION("ASoC WM8770 driver"); 721 MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>"); 722 MODULE_LICENSE("GPL"); 723