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/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 "wm8971.h" 30 31 #define WM8971_REG_COUNT 43 32 33 static struct workqueue_struct *wm8971_workq = NULL; 34 35 /* codec private data */ 36 struct wm8971_priv { 37 enum snd_soc_control_type control_type; 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 u16 wm8971_reg[] = { 47 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */ 48 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */ 49 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */ 50 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */ 51 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */ 52 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */ 53 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */ 54 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */ 55 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */ 56 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */ 57 0x0079, 0x0079, 0x0079, /* 40 */ 58 }; 59 60 #define wm8971_reset(c) snd_soc_write(c, WM8971_RESET, 0) 61 62 /* WM8971 Controls */ 63 static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" }; 64 static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz", 65 "200Hz @ 48kHz" }; 66 static const char *wm8971_treble[] = { "8kHz", "4kHz" }; 67 static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" }; 68 static const char *wm8971_ng_type[] = { "Constant PGA Gain", 69 "Mute ADC Output" }; 70 static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; 71 static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)", 72 "Mono (Right)", "Digital Mono"}; 73 static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" }; 74 static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA", 75 "Differential"}; 76 static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA", 77 "Differential"}; 78 static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"}; 79 static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"}; 80 static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert", 81 "L + R Invert"}; 82 83 static const struct soc_enum wm8971_enum[] = { 84 SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass), /* 0 */ 85 SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter), 86 SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble), 87 SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func), 88 SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type), /* 4 */ 89 SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp), 90 SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux), 91 SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase), 92 SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */ 93 SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux), 94 SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel), 95 SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel), 96 SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol), /* 12 */ 97 SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux), 98 }; 99 100 static const struct snd_kcontrol_new wm8971_snd_controls[] = { 101 SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0), 102 SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL, 103 6, 1, 0), 104 SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1), 105 106 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V, 107 WM8971_ROUT1V, 7, 1, 0), 108 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V, 109 WM8971_ROUT2V, 7, 1, 0), 110 SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0), 111 112 SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0), 113 114 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1, 115 WM8971_LOUTM2, 4, 7, 1), 116 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1, 117 WM8971_ROUTM2, 4, 7, 1), 118 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1, 119 WM8971_MOUTM2, 4, 7, 1), 120 121 SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V, 122 WM8971_ROUT1V, 0, 127, 0), 123 SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V, 124 WM8971_ROUT2V, 0, 127, 0), 125 126 SOC_ENUM("Bass Boost", wm8971_enum[0]), 127 SOC_ENUM("Bass Filter", wm8971_enum[1]), 128 SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1), 129 130 SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0), 131 SOC_ENUM("Treble Cut-off", wm8971_enum[2]), 132 133 SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1), 134 135 SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0), 136 SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0), 137 138 SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0), 139 SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0), 140 SOC_ENUM("ALC Capture Function", wm8971_enum[3]), 141 SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0), 142 SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0), 143 SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0), 144 SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0), 145 SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0), 146 SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]), 147 SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0), 148 149 SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0), 150 SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0), 151 152 SOC_ENUM("Playback De-emphasis", wm8971_enum[5]), 153 SOC_ENUM("Playback Function", wm8971_enum[6]), 154 SOC_ENUM("Playback Phase", wm8971_enum[7]), 155 156 SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0), 157 }; 158 159 /* 160 * DAPM Controls 161 */ 162 163 /* Left Mixer */ 164 static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = { 165 SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0), 166 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0), 167 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0), 168 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0), 169 }; 170 171 /* Right Mixer */ 172 static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = { 173 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0), 174 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0), 175 SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0), 176 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0), 177 }; 178 179 /* Mono Mixer */ 180 static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = { 181 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0), 182 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0), 183 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0), 184 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0), 185 }; 186 187 /* Left Line Mux */ 188 static const struct snd_kcontrol_new wm8971_left_line_controls = 189 SOC_DAPM_ENUM("Route", wm8971_enum[8]); 190 191 /* Right Line Mux */ 192 static const struct snd_kcontrol_new wm8971_right_line_controls = 193 SOC_DAPM_ENUM("Route", wm8971_enum[9]); 194 195 /* Left PGA Mux */ 196 static const struct snd_kcontrol_new wm8971_left_pga_controls = 197 SOC_DAPM_ENUM("Route", wm8971_enum[10]); 198 199 /* Right PGA Mux */ 200 static const struct snd_kcontrol_new wm8971_right_pga_controls = 201 SOC_DAPM_ENUM("Route", wm8971_enum[11]); 202 203 /* Mono ADC Mux */ 204 static const struct snd_kcontrol_new wm8971_monomux_controls = 205 SOC_DAPM_ENUM("Route", wm8971_enum[13]); 206 207 static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = { 208 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0, 209 &wm8971_left_mixer_controls[0], 210 ARRAY_SIZE(wm8971_left_mixer_controls)), 211 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0, 212 &wm8971_right_mixer_controls[0], 213 ARRAY_SIZE(wm8971_right_mixer_controls)), 214 SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0, 215 &wm8971_mono_mixer_controls[0], 216 ARRAY_SIZE(wm8971_mono_mixer_controls)), 217 218 SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0), 219 SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0), 220 SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0), 221 SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0), 222 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0), 223 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0), 224 SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0), 225 226 SND_SOC_DAPM_SUPPLY("Mic Bias", WM8971_PWR1, 1, 0, NULL, 0), 227 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0), 228 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0), 229 230 SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0, 231 &wm8971_left_pga_controls), 232 SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0, 233 &wm8971_right_pga_controls), 234 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0, 235 &wm8971_left_line_controls), 236 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0, 237 &wm8971_right_line_controls), 238 239 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0, 240 &wm8971_monomux_controls), 241 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0, 242 &wm8971_monomux_controls), 243 244 SND_SOC_DAPM_OUTPUT("LOUT1"), 245 SND_SOC_DAPM_OUTPUT("ROUT1"), 246 SND_SOC_DAPM_OUTPUT("LOUT2"), 247 SND_SOC_DAPM_OUTPUT("ROUT2"), 248 SND_SOC_DAPM_OUTPUT("MONO"), 249 250 SND_SOC_DAPM_INPUT("LINPUT1"), 251 SND_SOC_DAPM_INPUT("RINPUT1"), 252 SND_SOC_DAPM_INPUT("MIC"), 253 }; 254 255 static const struct snd_soc_dapm_route wm8971_dapm_routes[] = { 256 /* left mixer */ 257 {"Left Mixer", "Playback Switch", "Left DAC"}, 258 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"}, 259 {"Left Mixer", "Right Playback Switch", "Right DAC"}, 260 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"}, 261 262 /* right mixer */ 263 {"Right Mixer", "Left Playback Switch", "Left DAC"}, 264 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"}, 265 {"Right Mixer", "Playback Switch", "Right DAC"}, 266 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"}, 267 268 /* left out 1 */ 269 {"Left Out 1", NULL, "Left Mixer"}, 270 {"LOUT1", NULL, "Left Out 1"}, 271 272 /* left out 2 */ 273 {"Left Out 2", NULL, "Left Mixer"}, 274 {"LOUT2", NULL, "Left Out 2"}, 275 276 /* right out 1 */ 277 {"Right Out 1", NULL, "Right Mixer"}, 278 {"ROUT1", NULL, "Right Out 1"}, 279 280 /* right out 2 */ 281 {"Right Out 2", NULL, "Right Mixer"}, 282 {"ROUT2", NULL, "Right Out 2"}, 283 284 /* mono mixer */ 285 {"Mono Mixer", "Left Playback Switch", "Left DAC"}, 286 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"}, 287 {"Mono Mixer", "Right Playback Switch", "Right DAC"}, 288 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"}, 289 290 /* mono out */ 291 {"Mono Out", NULL, "Mono Mixer"}, 292 {"MONO1", NULL, "Mono Out"}, 293 294 /* Left Line Mux */ 295 {"Left Line Mux", "Line", "LINPUT1"}, 296 {"Left Line Mux", "PGA", "Left PGA Mux"}, 297 {"Left Line Mux", "Differential", "Differential Mux"}, 298 299 /* Right Line Mux */ 300 {"Right Line Mux", "Line", "RINPUT1"}, 301 {"Right Line Mux", "Mic", "MIC"}, 302 {"Right Line Mux", "PGA", "Right PGA Mux"}, 303 {"Right Line Mux", "Differential", "Differential Mux"}, 304 305 /* Left PGA Mux */ 306 {"Left PGA Mux", "Line", "LINPUT1"}, 307 {"Left PGA Mux", "Differential", "Differential Mux"}, 308 309 /* Right PGA Mux */ 310 {"Right PGA Mux", "Line", "RINPUT1"}, 311 {"Right PGA Mux", "Differential", "Differential Mux"}, 312 313 /* Differential Mux */ 314 {"Differential Mux", "Line", "LINPUT1"}, 315 {"Differential Mux", "Line", "RINPUT1"}, 316 317 /* Left ADC Mux */ 318 {"Left ADC Mux", "Stereo", "Left PGA Mux"}, 319 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"}, 320 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"}, 321 322 /* Right ADC Mux */ 323 {"Right ADC Mux", "Stereo", "Right PGA Mux"}, 324 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"}, 325 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"}, 326 327 /* ADC */ 328 {"Left ADC", NULL, "Left ADC Mux"}, 329 {"Right ADC", NULL, "Right ADC Mux"}, 330 }; 331 332 struct _coeff_div { 333 u32 mclk; 334 u32 rate; 335 u16 fs; 336 u8 sr:5; 337 u8 usb:1; 338 }; 339 340 /* codec hifi mclk clock divider coefficients */ 341 static const struct _coeff_div coeff_div[] = { 342 /* 8k */ 343 {12288000, 8000, 1536, 0x6, 0x0}, 344 {11289600, 8000, 1408, 0x16, 0x0}, 345 {18432000, 8000, 2304, 0x7, 0x0}, 346 {16934400, 8000, 2112, 0x17, 0x0}, 347 {12000000, 8000, 1500, 0x6, 0x1}, 348 349 /* 11.025k */ 350 {11289600, 11025, 1024, 0x18, 0x0}, 351 {16934400, 11025, 1536, 0x19, 0x0}, 352 {12000000, 11025, 1088, 0x19, 0x1}, 353 354 /* 16k */ 355 {12288000, 16000, 768, 0xa, 0x0}, 356 {18432000, 16000, 1152, 0xb, 0x0}, 357 {12000000, 16000, 750, 0xa, 0x1}, 358 359 /* 22.05k */ 360 {11289600, 22050, 512, 0x1a, 0x0}, 361 {16934400, 22050, 768, 0x1b, 0x0}, 362 {12000000, 22050, 544, 0x1b, 0x1}, 363 364 /* 32k */ 365 {12288000, 32000, 384, 0xc, 0x0}, 366 {18432000, 32000, 576, 0xd, 0x0}, 367 {12000000, 32000, 375, 0xa, 0x1}, 368 369 /* 44.1k */ 370 {11289600, 44100, 256, 0x10, 0x0}, 371 {16934400, 44100, 384, 0x11, 0x0}, 372 {12000000, 44100, 272, 0x11, 0x1}, 373 374 /* 48k */ 375 {12288000, 48000, 256, 0x0, 0x0}, 376 {18432000, 48000, 384, 0x1, 0x0}, 377 {12000000, 48000, 250, 0x0, 0x1}, 378 379 /* 88.2k */ 380 {11289600, 88200, 128, 0x1e, 0x0}, 381 {16934400, 88200, 192, 0x1f, 0x0}, 382 {12000000, 88200, 136, 0x1f, 0x1}, 383 384 /* 96k */ 385 {12288000, 96000, 128, 0xe, 0x0}, 386 {18432000, 96000, 192, 0xf, 0x0}, 387 {12000000, 96000, 125, 0xe, 0x1}, 388 }; 389 390 static int get_coeff(int mclk, int rate) 391 { 392 int i; 393 394 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { 395 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) 396 return i; 397 } 398 return -EINVAL; 399 } 400 401 static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai, 402 int clk_id, unsigned int freq, int dir) 403 { 404 struct snd_soc_codec *codec = codec_dai->codec; 405 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec); 406 407 switch (freq) { 408 case 11289600: 409 case 12000000: 410 case 12288000: 411 case 16934400: 412 case 18432000: 413 wm8971->sysclk = freq; 414 return 0; 415 } 416 return -EINVAL; 417 } 418 419 static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai, 420 unsigned int fmt) 421 { 422 struct snd_soc_codec *codec = codec_dai->codec; 423 u16 iface = 0; 424 425 /* set master/slave audio interface */ 426 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 427 case SND_SOC_DAIFMT_CBM_CFM: 428 iface = 0x0040; 429 break; 430 case SND_SOC_DAIFMT_CBS_CFS: 431 break; 432 default: 433 return -EINVAL; 434 } 435 436 /* interface format */ 437 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 438 case SND_SOC_DAIFMT_I2S: 439 iface |= 0x0002; 440 break; 441 case SND_SOC_DAIFMT_RIGHT_J: 442 break; 443 case SND_SOC_DAIFMT_LEFT_J: 444 iface |= 0x0001; 445 break; 446 case SND_SOC_DAIFMT_DSP_A: 447 iface |= 0x0003; 448 break; 449 case SND_SOC_DAIFMT_DSP_B: 450 iface |= 0x0013; 451 break; 452 default: 453 return -EINVAL; 454 } 455 456 /* clock inversion */ 457 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 458 case SND_SOC_DAIFMT_NB_NF: 459 break; 460 case SND_SOC_DAIFMT_IB_IF: 461 iface |= 0x0090; 462 break; 463 case SND_SOC_DAIFMT_IB_NF: 464 iface |= 0x0080; 465 break; 466 case SND_SOC_DAIFMT_NB_IF: 467 iface |= 0x0010; 468 break; 469 default: 470 return -EINVAL; 471 } 472 473 snd_soc_write(codec, WM8971_IFACE, iface); 474 return 0; 475 } 476 477 static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream, 478 struct snd_pcm_hw_params *params, 479 struct snd_soc_dai *dai) 480 { 481 struct snd_soc_pcm_runtime *rtd = substream->private_data; 482 struct snd_soc_codec *codec = rtd->codec; 483 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec); 484 u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3; 485 u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0; 486 int coeff = get_coeff(wm8971->sysclk, params_rate(params)); 487 488 /* bit size */ 489 switch (params_format(params)) { 490 case SNDRV_PCM_FORMAT_S16_LE: 491 break; 492 case SNDRV_PCM_FORMAT_S20_3LE: 493 iface |= 0x0004; 494 break; 495 case SNDRV_PCM_FORMAT_S24_LE: 496 iface |= 0x0008; 497 break; 498 case SNDRV_PCM_FORMAT_S32_LE: 499 iface |= 0x000c; 500 break; 501 } 502 503 /* set iface & srate */ 504 snd_soc_write(codec, WM8971_IFACE, iface); 505 if (coeff >= 0) 506 snd_soc_write(codec, WM8971_SRATE, srate | 507 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb); 508 509 return 0; 510 } 511 512 static int wm8971_mute(struct snd_soc_dai *dai, int mute) 513 { 514 struct snd_soc_codec *codec = dai->codec; 515 u16 mute_reg = snd_soc_read(codec, WM8971_ADCDAC) & 0xfff7; 516 517 if (mute) 518 snd_soc_write(codec, WM8971_ADCDAC, mute_reg | 0x8); 519 else 520 snd_soc_write(codec, WM8971_ADCDAC, mute_reg); 521 return 0; 522 } 523 524 static int wm8971_set_bias_level(struct snd_soc_codec *codec, 525 enum snd_soc_bias_level level) 526 { 527 u16 pwr_reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; 528 529 switch (level) { 530 case SND_SOC_BIAS_ON: 531 /* set vmid to 50k and unmute dac */ 532 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x00c1); 533 break; 534 case SND_SOC_BIAS_PREPARE: 535 break; 536 case SND_SOC_BIAS_STANDBY: 537 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) 538 snd_soc_cache_sync(codec); 539 540 /* mute dac and set vmid to 500k, enable VREF */ 541 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x0140); 542 break; 543 case SND_SOC_BIAS_OFF: 544 snd_soc_write(codec, WM8971_PWR1, 0x0001); 545 break; 546 } 547 codec->dapm.bias_level = level; 548 return 0; 549 } 550 551 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 552 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ 553 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) 554 555 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 556 SNDRV_PCM_FMTBIT_S24_LE) 557 558 static const struct snd_soc_dai_ops wm8971_dai_ops = { 559 .hw_params = wm8971_pcm_hw_params, 560 .digital_mute = wm8971_mute, 561 .set_fmt = wm8971_set_dai_fmt, 562 .set_sysclk = wm8971_set_dai_sysclk, 563 }; 564 565 static struct snd_soc_dai_driver wm8971_dai = { 566 .name = "wm8971-hifi", 567 .playback = { 568 .stream_name = "Playback", 569 .channels_min = 1, 570 .channels_max = 2, 571 .rates = WM8971_RATES, 572 .formats = WM8971_FORMATS,}, 573 .capture = { 574 .stream_name = "Capture", 575 .channels_min = 1, 576 .channels_max = 2, 577 .rates = WM8971_RATES, 578 .formats = WM8971_FORMATS,}, 579 .ops = &wm8971_dai_ops, 580 }; 581 582 static void wm8971_work(struct work_struct *work) 583 { 584 struct snd_soc_dapm_context *dapm = 585 container_of(work, struct snd_soc_dapm_context, 586 delayed_work.work); 587 struct snd_soc_codec *codec = dapm->codec; 588 wm8971_set_bias_level(codec, codec->dapm.bias_level); 589 } 590 591 static int wm8971_suspend(struct snd_soc_codec *codec) 592 { 593 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); 594 return 0; 595 } 596 597 static int wm8971_resume(struct snd_soc_codec *codec) 598 { 599 u16 reg; 600 601 wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 602 603 /* charge wm8971 caps */ 604 if (codec->dapm.suspend_bias_level == SND_SOC_BIAS_ON) { 605 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; 606 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0); 607 codec->dapm.bias_level = SND_SOC_BIAS_ON; 608 queue_delayed_work(wm8971_workq, &codec->dapm.delayed_work, 609 msecs_to_jiffies(1000)); 610 } 611 612 return 0; 613 } 614 615 static int wm8971_probe(struct snd_soc_codec *codec) 616 { 617 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec); 618 int ret = 0; 619 u16 reg; 620 621 ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8971->control_type); 622 if (ret < 0) { 623 printk(KERN_ERR "wm8971: failed to set cache I/O: %d\n", ret); 624 return ret; 625 } 626 627 INIT_DELAYED_WORK(&codec->dapm.delayed_work, wm8971_work); 628 wm8971_workq = create_workqueue("wm8971"); 629 if (wm8971_workq == NULL) 630 return -ENOMEM; 631 632 wm8971_reset(codec); 633 634 /* charge output caps - set vmid to 5k for quick power up */ 635 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; 636 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0); 637 codec->dapm.bias_level = SND_SOC_BIAS_STANDBY; 638 queue_delayed_work(wm8971_workq, &codec->dapm.delayed_work, 639 msecs_to_jiffies(1000)); 640 641 /* set the update bits */ 642 snd_soc_update_bits(codec, WM8971_LDAC, 0x0100, 0x0100); 643 snd_soc_update_bits(codec, WM8971_RDAC, 0x0100, 0x0100); 644 snd_soc_update_bits(codec, WM8971_LOUT1V, 0x0100, 0x0100); 645 snd_soc_update_bits(codec, WM8971_ROUT1V, 0x0100, 0x0100); 646 snd_soc_update_bits(codec, WM8971_LOUT2V, 0x0100, 0x0100); 647 snd_soc_update_bits(codec, WM8971_ROUT2V, 0x0100, 0x0100); 648 snd_soc_update_bits(codec, WM8971_LINVOL, 0x0100, 0x0100); 649 snd_soc_update_bits(codec, WM8971_RINVOL, 0x0100, 0x0100); 650 651 return ret; 652 } 653 654 655 /* power down chip */ 656 static int wm8971_remove(struct snd_soc_codec *codec) 657 { 658 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); 659 660 if (wm8971_workq) 661 destroy_workqueue(wm8971_workq); 662 return 0; 663 } 664 665 static struct snd_soc_codec_driver soc_codec_dev_wm8971 = { 666 .probe = wm8971_probe, 667 .remove = wm8971_remove, 668 .suspend = wm8971_suspend, 669 .resume = wm8971_resume, 670 .set_bias_level = wm8971_set_bias_level, 671 .reg_cache_size = ARRAY_SIZE(wm8971_reg), 672 .reg_word_size = sizeof(u16), 673 .reg_cache_default = wm8971_reg, 674 675 .controls = wm8971_snd_controls, 676 .num_controls = ARRAY_SIZE(wm8971_snd_controls), 677 .dapm_widgets = wm8971_dapm_widgets, 678 .num_dapm_widgets = ARRAY_SIZE(wm8971_dapm_widgets), 679 .dapm_routes = wm8971_dapm_routes, 680 .num_dapm_routes = ARRAY_SIZE(wm8971_dapm_routes), 681 }; 682 683 static __devinit int wm8971_i2c_probe(struct i2c_client *i2c, 684 const struct i2c_device_id *id) 685 { 686 struct wm8971_priv *wm8971; 687 int ret; 688 689 wm8971 = devm_kzalloc(&i2c->dev, sizeof(struct wm8971_priv), 690 GFP_KERNEL); 691 if (wm8971 == NULL) 692 return -ENOMEM; 693 694 wm8971->control_type = SND_SOC_I2C; 695 i2c_set_clientdata(i2c, wm8971); 696 697 ret = snd_soc_register_codec(&i2c->dev, 698 &soc_codec_dev_wm8971, &wm8971_dai, 1); 699 700 return ret; 701 } 702 703 static __devexit int wm8971_i2c_remove(struct i2c_client *client) 704 { 705 snd_soc_unregister_codec(&client->dev); 706 return 0; 707 } 708 709 static const struct i2c_device_id wm8971_i2c_id[] = { 710 { "wm8971", 0 }, 711 { } 712 }; 713 MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id); 714 715 static struct i2c_driver wm8971_i2c_driver = { 716 .driver = { 717 .name = "wm8971", 718 .owner = THIS_MODULE, 719 }, 720 .probe = wm8971_i2c_probe, 721 .remove = __devexit_p(wm8971_i2c_remove), 722 .id_table = wm8971_i2c_id, 723 }; 724 725 static int __init wm8971_modinit(void) 726 { 727 int ret = 0; 728 ret = i2c_add_driver(&wm8971_i2c_driver); 729 if (ret != 0) { 730 printk(KERN_ERR "Failed to register WM8971 I2C driver: %d\n", 731 ret); 732 } 733 return ret; 734 } 735 module_init(wm8971_modinit); 736 737 static void __exit wm8971_exit(void) 738 { 739 i2c_del_driver(&wm8971_i2c_driver); 740 } 741 module_exit(wm8971_exit); 742 743 MODULE_DESCRIPTION("ASoC WM8971 driver"); 744 MODULE_AUTHOR("Lab126"); 745 MODULE_LICENSE("GPL"); 746