1 /* 2 * wm8971.c -- WM8971 ALSA SoC Audio driver 3 * 4 * Copyright 2005 Lab126, Inc. 5 * 6 * Author: Kenneth Kiraly <kiraly@lab126.com> 7 * 8 * Based on wm8753.c by Liam Girdwood 9 * 10 * This program is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License as published by the 12 * Free Software Foundation; either version 2 of the License, or (at your 13 * option) any later version. 14 */ 15 16 #include <linux/module.h> 17 #include <linux/moduleparam.h> 18 #include <linux/init.h> 19 #include <linux/delay.h> 20 #include <linux/pm.h> 21 #include <linux/i2c.h> 22 #include <linux/regmap.h> 23 #include <linux/slab.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 "wm8971.h" 31 32 #define WM8971_REG_COUNT 43 33 34 static struct workqueue_struct *wm8971_workq = NULL; 35 36 /* codec private data */ 37 struct wm8971_priv { 38 unsigned int sysclk; 39 }; 40 41 /* 42 * wm8971 register cache 43 * We can't read the WM8971 register space when we 44 * are using 2 wire for device control, so we cache them instead. 45 */ 46 static const struct reg_default wm8971_reg_defaults[] = { 47 { 0, 0x0097 }, 48 { 1, 0x0097 }, 49 { 2, 0x0079 }, 50 { 3, 0x0079 }, 51 { 4, 0x0000 }, 52 { 5, 0x0008 }, 53 { 6, 0x0000 }, 54 { 7, 0x000a }, 55 { 8, 0x0000 }, 56 { 9, 0x0000 }, 57 { 10, 0x00ff }, 58 { 11, 0x00ff }, 59 { 12, 0x000f }, 60 { 13, 0x000f }, 61 { 14, 0x0000 }, 62 { 15, 0x0000 }, 63 { 16, 0x0000 }, 64 { 17, 0x007b }, 65 { 18, 0x0000 }, 66 { 19, 0x0032 }, 67 { 20, 0x0000 }, 68 { 21, 0x00c3 }, 69 { 22, 0x00c3 }, 70 { 23, 0x00c0 }, 71 { 24, 0x0000 }, 72 { 25, 0x0000 }, 73 { 26, 0x0000 }, 74 { 27, 0x0000 }, 75 { 28, 0x0000 }, 76 { 29, 0x0000 }, 77 { 30, 0x0000 }, 78 { 31, 0x0000 }, 79 { 32, 0x0000 }, 80 { 33, 0x0000 }, 81 { 34, 0x0050 }, 82 { 35, 0x0050 }, 83 { 36, 0x0050 }, 84 { 37, 0x0050 }, 85 { 38, 0x0050 }, 86 { 39, 0x0050 }, 87 { 40, 0x0079 }, 88 { 41, 0x0079 }, 89 { 42, 0x0079 }, 90 }; 91 92 #define wm8971_reset(c) snd_soc_write(c, WM8971_RESET, 0) 93 94 /* WM8971 Controls */ 95 static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" }; 96 static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz", 97 "200Hz @ 48kHz" }; 98 static const char *wm8971_treble[] = { "8kHz", "4kHz" }; 99 static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" }; 100 static const char *wm8971_ng_type[] = { "Constant PGA Gain", 101 "Mute ADC Output" }; 102 static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; 103 static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)", 104 "Mono (Right)", "Digital Mono"}; 105 static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" }; 106 static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA", 107 "Differential"}; 108 static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA", 109 "Differential"}; 110 static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"}; 111 static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"}; 112 static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert", 113 "L + R Invert"}; 114 115 static const struct soc_enum wm8971_enum[] = { 116 SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass), /* 0 */ 117 SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter), 118 SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble), 119 SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func), 120 SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type), /* 4 */ 121 SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp), 122 SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux), 123 SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase), 124 SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */ 125 SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux), 126 SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel), 127 SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel), 128 SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol), /* 12 */ 129 SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux), 130 }; 131 132 static const struct snd_kcontrol_new wm8971_snd_controls[] = { 133 SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0), 134 SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL, 135 6, 1, 0), 136 SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1), 137 138 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V, 139 WM8971_ROUT1V, 7, 1, 0), 140 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V, 141 WM8971_ROUT2V, 7, 1, 0), 142 SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0), 143 144 SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0), 145 146 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1, 147 WM8971_LOUTM2, 4, 7, 1), 148 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1, 149 WM8971_ROUTM2, 4, 7, 1), 150 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1, 151 WM8971_MOUTM2, 4, 7, 1), 152 153 SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V, 154 WM8971_ROUT1V, 0, 127, 0), 155 SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V, 156 WM8971_ROUT2V, 0, 127, 0), 157 158 SOC_ENUM("Bass Boost", wm8971_enum[0]), 159 SOC_ENUM("Bass Filter", wm8971_enum[1]), 160 SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1), 161 162 SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0), 163 SOC_ENUM("Treble Cut-off", wm8971_enum[2]), 164 165 SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1), 166 167 SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0), 168 SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0), 169 170 SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0), 171 SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0), 172 SOC_ENUM("ALC Capture Function", wm8971_enum[3]), 173 SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0), 174 SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0), 175 SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0), 176 SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0), 177 SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0), 178 SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]), 179 SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0), 180 181 SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0), 182 SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0), 183 184 SOC_ENUM("Playback De-emphasis", wm8971_enum[5]), 185 SOC_ENUM("Playback Function", wm8971_enum[6]), 186 SOC_ENUM("Playback Phase", wm8971_enum[7]), 187 188 SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0), 189 }; 190 191 /* 192 * DAPM Controls 193 */ 194 195 /* Left Mixer */ 196 static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = { 197 SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0), 198 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0), 199 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0), 200 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0), 201 }; 202 203 /* Right Mixer */ 204 static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = { 205 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0), 206 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0), 207 SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0), 208 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0), 209 }; 210 211 /* Mono Mixer */ 212 static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = { 213 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0), 214 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0), 215 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0), 216 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0), 217 }; 218 219 /* Left Line Mux */ 220 static const struct snd_kcontrol_new wm8971_left_line_controls = 221 SOC_DAPM_ENUM("Route", wm8971_enum[8]); 222 223 /* Right Line Mux */ 224 static const struct snd_kcontrol_new wm8971_right_line_controls = 225 SOC_DAPM_ENUM("Route", wm8971_enum[9]); 226 227 /* Left PGA Mux */ 228 static const struct snd_kcontrol_new wm8971_left_pga_controls = 229 SOC_DAPM_ENUM("Route", wm8971_enum[10]); 230 231 /* Right PGA Mux */ 232 static const struct snd_kcontrol_new wm8971_right_pga_controls = 233 SOC_DAPM_ENUM("Route", wm8971_enum[11]); 234 235 /* Mono ADC Mux */ 236 static const struct snd_kcontrol_new wm8971_monomux_controls = 237 SOC_DAPM_ENUM("Route", wm8971_enum[13]); 238 239 static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = { 240 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0, 241 &wm8971_left_mixer_controls[0], 242 ARRAY_SIZE(wm8971_left_mixer_controls)), 243 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0, 244 &wm8971_right_mixer_controls[0], 245 ARRAY_SIZE(wm8971_right_mixer_controls)), 246 SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0, 247 &wm8971_mono_mixer_controls[0], 248 ARRAY_SIZE(wm8971_mono_mixer_controls)), 249 250 SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0), 251 SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0), 252 SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0), 253 SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0), 254 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0), 255 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0), 256 SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0), 257 258 SND_SOC_DAPM_SUPPLY("Mic Bias", WM8971_PWR1, 1, 0, NULL, 0), 259 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0), 260 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0), 261 262 SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0, 263 &wm8971_left_pga_controls), 264 SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0, 265 &wm8971_right_pga_controls), 266 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0, 267 &wm8971_left_line_controls), 268 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0, 269 &wm8971_right_line_controls), 270 271 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0, 272 &wm8971_monomux_controls), 273 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0, 274 &wm8971_monomux_controls), 275 276 SND_SOC_DAPM_OUTPUT("LOUT1"), 277 SND_SOC_DAPM_OUTPUT("ROUT1"), 278 SND_SOC_DAPM_OUTPUT("LOUT2"), 279 SND_SOC_DAPM_OUTPUT("ROUT2"), 280 SND_SOC_DAPM_OUTPUT("MONO"), 281 282 SND_SOC_DAPM_INPUT("LINPUT1"), 283 SND_SOC_DAPM_INPUT("RINPUT1"), 284 SND_SOC_DAPM_INPUT("MIC"), 285 }; 286 287 static const struct snd_soc_dapm_route wm8971_dapm_routes[] = { 288 /* left mixer */ 289 {"Left Mixer", "Playback Switch", "Left DAC"}, 290 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"}, 291 {"Left Mixer", "Right Playback Switch", "Right DAC"}, 292 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"}, 293 294 /* right mixer */ 295 {"Right Mixer", "Left Playback Switch", "Left DAC"}, 296 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"}, 297 {"Right Mixer", "Playback Switch", "Right DAC"}, 298 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"}, 299 300 /* left out 1 */ 301 {"Left Out 1", NULL, "Left Mixer"}, 302 {"LOUT1", NULL, "Left Out 1"}, 303 304 /* left out 2 */ 305 {"Left Out 2", NULL, "Left Mixer"}, 306 {"LOUT2", NULL, "Left Out 2"}, 307 308 /* right out 1 */ 309 {"Right Out 1", NULL, "Right Mixer"}, 310 {"ROUT1", NULL, "Right Out 1"}, 311 312 /* right out 2 */ 313 {"Right Out 2", NULL, "Right Mixer"}, 314 {"ROUT2", NULL, "Right Out 2"}, 315 316 /* mono mixer */ 317 {"Mono Mixer", "Left Playback Switch", "Left DAC"}, 318 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"}, 319 {"Mono Mixer", "Right Playback Switch", "Right DAC"}, 320 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"}, 321 322 /* mono out */ 323 {"Mono Out", NULL, "Mono Mixer"}, 324 {"MONO1", NULL, "Mono Out"}, 325 326 /* Left Line Mux */ 327 {"Left Line Mux", "Line", "LINPUT1"}, 328 {"Left Line Mux", "PGA", "Left PGA Mux"}, 329 {"Left Line Mux", "Differential", "Differential Mux"}, 330 331 /* Right Line Mux */ 332 {"Right Line Mux", "Line", "RINPUT1"}, 333 {"Right Line Mux", "Mic", "MIC"}, 334 {"Right Line Mux", "PGA", "Right PGA Mux"}, 335 {"Right Line Mux", "Differential", "Differential Mux"}, 336 337 /* Left PGA Mux */ 338 {"Left PGA Mux", "Line", "LINPUT1"}, 339 {"Left PGA Mux", "Differential", "Differential Mux"}, 340 341 /* Right PGA Mux */ 342 {"Right PGA Mux", "Line", "RINPUT1"}, 343 {"Right PGA Mux", "Differential", "Differential Mux"}, 344 345 /* Differential Mux */ 346 {"Differential Mux", "Line", "LINPUT1"}, 347 {"Differential Mux", "Line", "RINPUT1"}, 348 349 /* Left ADC Mux */ 350 {"Left ADC Mux", "Stereo", "Left PGA Mux"}, 351 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"}, 352 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"}, 353 354 /* Right ADC Mux */ 355 {"Right ADC Mux", "Stereo", "Right PGA Mux"}, 356 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"}, 357 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"}, 358 359 /* ADC */ 360 {"Left ADC", NULL, "Left ADC Mux"}, 361 {"Right ADC", NULL, "Right ADC Mux"}, 362 }; 363 364 struct _coeff_div { 365 u32 mclk; 366 u32 rate; 367 u16 fs; 368 u8 sr:5; 369 u8 usb:1; 370 }; 371 372 /* codec hifi mclk clock divider coefficients */ 373 static const struct _coeff_div coeff_div[] = { 374 /* 8k */ 375 {12288000, 8000, 1536, 0x6, 0x0}, 376 {11289600, 8000, 1408, 0x16, 0x0}, 377 {18432000, 8000, 2304, 0x7, 0x0}, 378 {16934400, 8000, 2112, 0x17, 0x0}, 379 {12000000, 8000, 1500, 0x6, 0x1}, 380 381 /* 11.025k */ 382 {11289600, 11025, 1024, 0x18, 0x0}, 383 {16934400, 11025, 1536, 0x19, 0x0}, 384 {12000000, 11025, 1088, 0x19, 0x1}, 385 386 /* 16k */ 387 {12288000, 16000, 768, 0xa, 0x0}, 388 {18432000, 16000, 1152, 0xb, 0x0}, 389 {12000000, 16000, 750, 0xa, 0x1}, 390 391 /* 22.05k */ 392 {11289600, 22050, 512, 0x1a, 0x0}, 393 {16934400, 22050, 768, 0x1b, 0x0}, 394 {12000000, 22050, 544, 0x1b, 0x1}, 395 396 /* 32k */ 397 {12288000, 32000, 384, 0xc, 0x0}, 398 {18432000, 32000, 576, 0xd, 0x0}, 399 {12000000, 32000, 375, 0xa, 0x1}, 400 401 /* 44.1k */ 402 {11289600, 44100, 256, 0x10, 0x0}, 403 {16934400, 44100, 384, 0x11, 0x0}, 404 {12000000, 44100, 272, 0x11, 0x1}, 405 406 /* 48k */ 407 {12288000, 48000, 256, 0x0, 0x0}, 408 {18432000, 48000, 384, 0x1, 0x0}, 409 {12000000, 48000, 250, 0x0, 0x1}, 410 411 /* 88.2k */ 412 {11289600, 88200, 128, 0x1e, 0x0}, 413 {16934400, 88200, 192, 0x1f, 0x0}, 414 {12000000, 88200, 136, 0x1f, 0x1}, 415 416 /* 96k */ 417 {12288000, 96000, 128, 0xe, 0x0}, 418 {18432000, 96000, 192, 0xf, 0x0}, 419 {12000000, 96000, 125, 0xe, 0x1}, 420 }; 421 422 static int get_coeff(int mclk, int rate) 423 { 424 int i; 425 426 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { 427 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) 428 return i; 429 } 430 return -EINVAL; 431 } 432 433 static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai, 434 int clk_id, unsigned int freq, int dir) 435 { 436 struct snd_soc_codec *codec = codec_dai->codec; 437 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec); 438 439 switch (freq) { 440 case 11289600: 441 case 12000000: 442 case 12288000: 443 case 16934400: 444 case 18432000: 445 wm8971->sysclk = freq; 446 return 0; 447 } 448 return -EINVAL; 449 } 450 451 static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai, 452 unsigned int fmt) 453 { 454 struct snd_soc_codec *codec = codec_dai->codec; 455 u16 iface = 0; 456 457 /* set master/slave audio interface */ 458 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 459 case SND_SOC_DAIFMT_CBM_CFM: 460 iface = 0x0040; 461 break; 462 case SND_SOC_DAIFMT_CBS_CFS: 463 break; 464 default: 465 return -EINVAL; 466 } 467 468 /* interface format */ 469 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 470 case SND_SOC_DAIFMT_I2S: 471 iface |= 0x0002; 472 break; 473 case SND_SOC_DAIFMT_RIGHT_J: 474 break; 475 case SND_SOC_DAIFMT_LEFT_J: 476 iface |= 0x0001; 477 break; 478 case SND_SOC_DAIFMT_DSP_A: 479 iface |= 0x0003; 480 break; 481 case SND_SOC_DAIFMT_DSP_B: 482 iface |= 0x0013; 483 break; 484 default: 485 return -EINVAL; 486 } 487 488 /* clock inversion */ 489 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 490 case SND_SOC_DAIFMT_NB_NF: 491 break; 492 case SND_SOC_DAIFMT_IB_IF: 493 iface |= 0x0090; 494 break; 495 case SND_SOC_DAIFMT_IB_NF: 496 iface |= 0x0080; 497 break; 498 case SND_SOC_DAIFMT_NB_IF: 499 iface |= 0x0010; 500 break; 501 default: 502 return -EINVAL; 503 } 504 505 snd_soc_write(codec, WM8971_IFACE, iface); 506 return 0; 507 } 508 509 static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream, 510 struct snd_pcm_hw_params *params, 511 struct snd_soc_dai *dai) 512 { 513 struct snd_soc_codec *codec = dai->codec; 514 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec); 515 u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3; 516 u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0; 517 int coeff = get_coeff(wm8971->sysclk, params_rate(params)); 518 519 /* bit size */ 520 switch (params_width(params)) { 521 case 16: 522 break; 523 case 20: 524 iface |= 0x0004; 525 break; 526 case 24: 527 iface |= 0x0008; 528 break; 529 case 32: 530 iface |= 0x000c; 531 break; 532 } 533 534 /* set iface & srate */ 535 snd_soc_write(codec, WM8971_IFACE, iface); 536 if (coeff >= 0) 537 snd_soc_write(codec, WM8971_SRATE, srate | 538 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb); 539 540 return 0; 541 } 542 543 static int wm8971_mute(struct snd_soc_dai *dai, int mute) 544 { 545 struct snd_soc_codec *codec = dai->codec; 546 u16 mute_reg = snd_soc_read(codec, WM8971_ADCDAC) & 0xfff7; 547 548 if (mute) 549 snd_soc_write(codec, WM8971_ADCDAC, mute_reg | 0x8); 550 else 551 snd_soc_write(codec, WM8971_ADCDAC, mute_reg); 552 return 0; 553 } 554 555 static int wm8971_set_bias_level(struct snd_soc_codec *codec, 556 enum snd_soc_bias_level level) 557 { 558 u16 pwr_reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; 559 560 switch (level) { 561 case SND_SOC_BIAS_ON: 562 /* set vmid to 50k and unmute dac */ 563 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x00c1); 564 break; 565 case SND_SOC_BIAS_PREPARE: 566 break; 567 case SND_SOC_BIAS_STANDBY: 568 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) 569 snd_soc_cache_sync(codec); 570 571 /* mute dac and set vmid to 500k, enable VREF */ 572 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x0140); 573 break; 574 case SND_SOC_BIAS_OFF: 575 snd_soc_write(codec, WM8971_PWR1, 0x0001); 576 break; 577 } 578 codec->dapm.bias_level = level; 579 return 0; 580 } 581 582 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 583 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ 584 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) 585 586 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 587 SNDRV_PCM_FMTBIT_S24_LE) 588 589 static const struct snd_soc_dai_ops wm8971_dai_ops = { 590 .hw_params = wm8971_pcm_hw_params, 591 .digital_mute = wm8971_mute, 592 .set_fmt = wm8971_set_dai_fmt, 593 .set_sysclk = wm8971_set_dai_sysclk, 594 }; 595 596 static struct snd_soc_dai_driver wm8971_dai = { 597 .name = "wm8971-hifi", 598 .playback = { 599 .stream_name = "Playback", 600 .channels_min = 1, 601 .channels_max = 2, 602 .rates = WM8971_RATES, 603 .formats = WM8971_FORMATS,}, 604 .capture = { 605 .stream_name = "Capture", 606 .channels_min = 1, 607 .channels_max = 2, 608 .rates = WM8971_RATES, 609 .formats = WM8971_FORMATS,}, 610 .ops = &wm8971_dai_ops, 611 }; 612 613 static void wm8971_work(struct work_struct *work) 614 { 615 struct snd_soc_dapm_context *dapm = 616 container_of(work, struct snd_soc_dapm_context, 617 delayed_work.work); 618 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(dapm); 619 wm8971_set_bias_level(codec, codec->dapm.bias_level); 620 } 621 622 static int wm8971_suspend(struct snd_soc_codec *codec) 623 { 624 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); 625 return 0; 626 } 627 628 static int wm8971_resume(struct snd_soc_codec *codec) 629 { 630 u16 reg; 631 632 wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 633 634 /* charge wm8971 caps */ 635 if (codec->dapm.suspend_bias_level == SND_SOC_BIAS_ON) { 636 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; 637 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0); 638 codec->dapm.bias_level = SND_SOC_BIAS_ON; 639 queue_delayed_work(wm8971_workq, &codec->dapm.delayed_work, 640 msecs_to_jiffies(1000)); 641 } 642 643 return 0; 644 } 645 646 static int wm8971_probe(struct snd_soc_codec *codec) 647 { 648 int ret = 0; 649 u16 reg; 650 651 INIT_DELAYED_WORK(&codec->dapm.delayed_work, wm8971_work); 652 wm8971_workq = create_workqueue("wm8971"); 653 if (wm8971_workq == NULL) 654 return -ENOMEM; 655 656 wm8971_reset(codec); 657 658 /* charge output caps - set vmid to 5k for quick power up */ 659 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; 660 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0); 661 codec->dapm.bias_level = SND_SOC_BIAS_STANDBY; 662 queue_delayed_work(wm8971_workq, &codec->dapm.delayed_work, 663 msecs_to_jiffies(1000)); 664 665 /* set the update bits */ 666 snd_soc_update_bits(codec, WM8971_LDAC, 0x0100, 0x0100); 667 snd_soc_update_bits(codec, WM8971_RDAC, 0x0100, 0x0100); 668 snd_soc_update_bits(codec, WM8971_LOUT1V, 0x0100, 0x0100); 669 snd_soc_update_bits(codec, WM8971_ROUT1V, 0x0100, 0x0100); 670 snd_soc_update_bits(codec, WM8971_LOUT2V, 0x0100, 0x0100); 671 snd_soc_update_bits(codec, WM8971_ROUT2V, 0x0100, 0x0100); 672 snd_soc_update_bits(codec, WM8971_LINVOL, 0x0100, 0x0100); 673 snd_soc_update_bits(codec, WM8971_RINVOL, 0x0100, 0x0100); 674 675 return ret; 676 } 677 678 679 /* power down chip */ 680 static int wm8971_remove(struct snd_soc_codec *codec) 681 { 682 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); 683 684 if (wm8971_workq) 685 destroy_workqueue(wm8971_workq); 686 return 0; 687 } 688 689 static struct snd_soc_codec_driver soc_codec_dev_wm8971 = { 690 .probe = wm8971_probe, 691 .remove = wm8971_remove, 692 .suspend = wm8971_suspend, 693 .resume = wm8971_resume, 694 .set_bias_level = wm8971_set_bias_level, 695 696 .controls = wm8971_snd_controls, 697 .num_controls = ARRAY_SIZE(wm8971_snd_controls), 698 .dapm_widgets = wm8971_dapm_widgets, 699 .num_dapm_widgets = ARRAY_SIZE(wm8971_dapm_widgets), 700 .dapm_routes = wm8971_dapm_routes, 701 .num_dapm_routes = ARRAY_SIZE(wm8971_dapm_routes), 702 }; 703 704 static const struct regmap_config wm8971_regmap = { 705 .reg_bits = 7, 706 .val_bits = 9, 707 .max_register = WM8971_MOUTV, 708 709 .reg_defaults = wm8971_reg_defaults, 710 .num_reg_defaults = ARRAY_SIZE(wm8971_reg_defaults), 711 .cache_type = REGCACHE_RBTREE, 712 }; 713 714 static int wm8971_i2c_probe(struct i2c_client *i2c, 715 const struct i2c_device_id *id) 716 { 717 struct wm8971_priv *wm8971; 718 struct regmap *regmap; 719 int ret; 720 721 wm8971 = devm_kzalloc(&i2c->dev, sizeof(struct wm8971_priv), 722 GFP_KERNEL); 723 if (wm8971 == NULL) 724 return -ENOMEM; 725 726 regmap = devm_regmap_init_i2c(i2c, &wm8971_regmap); 727 if (IS_ERR(regmap)) 728 return PTR_ERR(regmap); 729 730 i2c_set_clientdata(i2c, wm8971); 731 732 ret = snd_soc_register_codec(&i2c->dev, 733 &soc_codec_dev_wm8971, &wm8971_dai, 1); 734 735 return ret; 736 } 737 738 static int wm8971_i2c_remove(struct i2c_client *client) 739 { 740 snd_soc_unregister_codec(&client->dev); 741 return 0; 742 } 743 744 static const struct i2c_device_id wm8971_i2c_id[] = { 745 { "wm8971", 0 }, 746 { } 747 }; 748 MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id); 749 750 static struct i2c_driver wm8971_i2c_driver = { 751 .driver = { 752 .name = "wm8971", 753 .owner = THIS_MODULE, 754 }, 755 .probe = wm8971_i2c_probe, 756 .remove = wm8971_i2c_remove, 757 .id_table = wm8971_i2c_id, 758 }; 759 760 module_i2c_driver(wm8971_i2c_driver); 761 762 MODULE_DESCRIPTION("ASoC WM8971 driver"); 763 MODULE_AUTHOR("Lab126"); 764 MODULE_LICENSE("GPL"); 765