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/platform_device.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/soc-dapm.h> 29 #include <sound/initval.h> 30 31 #include "wm8971.h" 32 33 #define WM8971_VERSION "0.9" 34 35 #define WM8971_REG_COUNT 43 36 37 static struct workqueue_struct *wm8971_workq = NULL; 38 39 /* codec private data */ 40 struct wm8971_priv { 41 unsigned int sysclk; 42 }; 43 44 /* 45 * wm8971 register cache 46 * We can't read the WM8971 register space when we 47 * are using 2 wire for device control, so we cache them instead. 48 */ 49 static const u16 wm8971_reg[] = { 50 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */ 51 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */ 52 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */ 53 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */ 54 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */ 55 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */ 56 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */ 57 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */ 58 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */ 59 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */ 60 0x0079, 0x0079, 0x0079, /* 40 */ 61 }; 62 63 #define wm8971_reset(c) snd_soc_write(c, WM8971_RESET, 0) 64 65 /* WM8971 Controls */ 66 static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" }; 67 static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz", 68 "200Hz @ 48kHz" }; 69 static const char *wm8971_treble[] = { "8kHz", "4kHz" }; 70 static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" }; 71 static const char *wm8971_ng_type[] = { "Constant PGA Gain", 72 "Mute ADC Output" }; 73 static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; 74 static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)", 75 "Mono (Right)", "Digital Mono"}; 76 static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" }; 77 static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA", 78 "Differential"}; 79 static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA", 80 "Differential"}; 81 static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"}; 82 static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"}; 83 static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert", 84 "L + R Invert"}; 85 86 static const struct soc_enum wm8971_enum[] = { 87 SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass), /* 0 */ 88 SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter), 89 SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble), 90 SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func), 91 SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type), /* 4 */ 92 SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp), 93 SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux), 94 SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase), 95 SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */ 96 SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux), 97 SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel), 98 SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel), 99 SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol), /* 12 */ 100 SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux), 101 }; 102 103 static const struct snd_kcontrol_new wm8971_snd_controls[] = { 104 SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0), 105 SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL, 106 6, 1, 0), 107 SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1), 108 109 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V, 110 WM8971_ROUT1V, 7, 1, 0), 111 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V, 112 WM8971_ROUT2V, 7, 1, 0), 113 SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0), 114 115 SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0), 116 117 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1, 118 WM8971_LOUTM2, 4, 7, 1), 119 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1, 120 WM8971_ROUTM2, 4, 7, 1), 121 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1, 122 WM8971_MOUTM2, 4, 7, 1), 123 124 SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V, 125 WM8971_ROUT1V, 0, 127, 0), 126 SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V, 127 WM8971_ROUT2V, 0, 127, 0), 128 129 SOC_ENUM("Bass Boost", wm8971_enum[0]), 130 SOC_ENUM("Bass Filter", wm8971_enum[1]), 131 SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1), 132 133 SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0), 134 SOC_ENUM("Treble Cut-off", wm8971_enum[2]), 135 136 SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1), 137 138 SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0), 139 SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0), 140 141 SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0), 142 SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0), 143 SOC_ENUM("ALC Capture Function", wm8971_enum[3]), 144 SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0), 145 SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0), 146 SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0), 147 SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0), 148 SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0), 149 SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]), 150 SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0), 151 152 SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0), 153 SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0), 154 155 SOC_ENUM("Playback De-emphasis", wm8971_enum[5]), 156 SOC_ENUM("Playback Function", wm8971_enum[6]), 157 SOC_ENUM("Playback Phase", wm8971_enum[7]), 158 159 SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0), 160 }; 161 162 /* 163 * DAPM Controls 164 */ 165 166 /* Left Mixer */ 167 static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = { 168 SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0), 169 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0), 170 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0), 171 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0), 172 }; 173 174 /* Right Mixer */ 175 static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = { 176 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0), 177 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0), 178 SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0), 179 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0), 180 }; 181 182 /* Mono Mixer */ 183 static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = { 184 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0), 185 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0), 186 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0), 187 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0), 188 }; 189 190 /* Left Line Mux */ 191 static const struct snd_kcontrol_new wm8971_left_line_controls = 192 SOC_DAPM_ENUM("Route", wm8971_enum[8]); 193 194 /* Right Line Mux */ 195 static const struct snd_kcontrol_new wm8971_right_line_controls = 196 SOC_DAPM_ENUM("Route", wm8971_enum[9]); 197 198 /* Left PGA Mux */ 199 static const struct snd_kcontrol_new wm8971_left_pga_controls = 200 SOC_DAPM_ENUM("Route", wm8971_enum[10]); 201 202 /* Right PGA Mux */ 203 static const struct snd_kcontrol_new wm8971_right_pga_controls = 204 SOC_DAPM_ENUM("Route", wm8971_enum[11]); 205 206 /* Mono ADC Mux */ 207 static const struct snd_kcontrol_new wm8971_monomux_controls = 208 SOC_DAPM_ENUM("Route", wm8971_enum[13]); 209 210 static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = { 211 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0, 212 &wm8971_left_mixer_controls[0], 213 ARRAY_SIZE(wm8971_left_mixer_controls)), 214 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0, 215 &wm8971_right_mixer_controls[0], 216 ARRAY_SIZE(wm8971_right_mixer_controls)), 217 SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0, 218 &wm8971_mono_mixer_controls[0], 219 ARRAY_SIZE(wm8971_mono_mixer_controls)), 220 221 SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0), 222 SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0), 223 SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0), 224 SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0), 225 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0), 226 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0), 227 SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0), 228 229 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8971_PWR1, 1, 0), 230 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0), 231 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0), 232 233 SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0, 234 &wm8971_left_pga_controls), 235 SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0, 236 &wm8971_right_pga_controls), 237 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0, 238 &wm8971_left_line_controls), 239 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0, 240 &wm8971_right_line_controls), 241 242 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0, 243 &wm8971_monomux_controls), 244 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0, 245 &wm8971_monomux_controls), 246 247 SND_SOC_DAPM_OUTPUT("LOUT1"), 248 SND_SOC_DAPM_OUTPUT("ROUT1"), 249 SND_SOC_DAPM_OUTPUT("LOUT2"), 250 SND_SOC_DAPM_OUTPUT("ROUT2"), 251 SND_SOC_DAPM_OUTPUT("MONO"), 252 253 SND_SOC_DAPM_INPUT("LINPUT1"), 254 SND_SOC_DAPM_INPUT("RINPUT1"), 255 SND_SOC_DAPM_INPUT("MIC"), 256 }; 257 258 static const struct snd_soc_dapm_route audio_map[] = { 259 /* left mixer */ 260 {"Left Mixer", "Playback Switch", "Left DAC"}, 261 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"}, 262 {"Left Mixer", "Right Playback Switch", "Right DAC"}, 263 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"}, 264 265 /* right mixer */ 266 {"Right Mixer", "Left Playback Switch", "Left DAC"}, 267 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"}, 268 {"Right Mixer", "Playback Switch", "Right DAC"}, 269 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"}, 270 271 /* left out 1 */ 272 {"Left Out 1", NULL, "Left Mixer"}, 273 {"LOUT1", NULL, "Left Out 1"}, 274 275 /* left out 2 */ 276 {"Left Out 2", NULL, "Left Mixer"}, 277 {"LOUT2", NULL, "Left Out 2"}, 278 279 /* right out 1 */ 280 {"Right Out 1", NULL, "Right Mixer"}, 281 {"ROUT1", NULL, "Right Out 1"}, 282 283 /* right out 2 */ 284 {"Right Out 2", NULL, "Right Mixer"}, 285 {"ROUT2", NULL, "Right Out 2"}, 286 287 /* mono mixer */ 288 {"Mono Mixer", "Left Playback Switch", "Left DAC"}, 289 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"}, 290 {"Mono Mixer", "Right Playback Switch", "Right DAC"}, 291 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"}, 292 293 /* mono out */ 294 {"Mono Out", NULL, "Mono Mixer"}, 295 {"MONO1", NULL, "Mono Out"}, 296 297 /* Left Line Mux */ 298 {"Left Line Mux", "Line", "LINPUT1"}, 299 {"Left Line Mux", "PGA", "Left PGA Mux"}, 300 {"Left Line Mux", "Differential", "Differential Mux"}, 301 302 /* Right Line Mux */ 303 {"Right Line Mux", "Line", "RINPUT1"}, 304 {"Right Line Mux", "Mic", "MIC"}, 305 {"Right Line Mux", "PGA", "Right PGA Mux"}, 306 {"Right Line Mux", "Differential", "Differential Mux"}, 307 308 /* Left PGA Mux */ 309 {"Left PGA Mux", "Line", "LINPUT1"}, 310 {"Left PGA Mux", "Differential", "Differential Mux"}, 311 312 /* Right PGA Mux */ 313 {"Right PGA Mux", "Line", "RINPUT1"}, 314 {"Right PGA Mux", "Differential", "Differential Mux"}, 315 316 /* Differential Mux */ 317 {"Differential Mux", "Line", "LINPUT1"}, 318 {"Differential Mux", "Line", "RINPUT1"}, 319 320 /* Left ADC Mux */ 321 {"Left ADC Mux", "Stereo", "Left PGA Mux"}, 322 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"}, 323 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"}, 324 325 /* Right ADC Mux */ 326 {"Right ADC Mux", "Stereo", "Right PGA Mux"}, 327 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"}, 328 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"}, 329 330 /* ADC */ 331 {"Left ADC", NULL, "Left ADC Mux"}, 332 {"Right ADC", NULL, "Right ADC Mux"}, 333 }; 334 335 static int wm8971_add_widgets(struct snd_soc_codec *codec) 336 { 337 snd_soc_dapm_new_controls(codec, wm8971_dapm_widgets, 338 ARRAY_SIZE(wm8971_dapm_widgets)); 339 340 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 341 342 return 0; 343 } 344 345 struct _coeff_div { 346 u32 mclk; 347 u32 rate; 348 u16 fs; 349 u8 sr:5; 350 u8 usb:1; 351 }; 352 353 /* codec hifi mclk clock divider coefficients */ 354 static const struct _coeff_div coeff_div[] = { 355 /* 8k */ 356 {12288000, 8000, 1536, 0x6, 0x0}, 357 {11289600, 8000, 1408, 0x16, 0x0}, 358 {18432000, 8000, 2304, 0x7, 0x0}, 359 {16934400, 8000, 2112, 0x17, 0x0}, 360 {12000000, 8000, 1500, 0x6, 0x1}, 361 362 /* 11.025k */ 363 {11289600, 11025, 1024, 0x18, 0x0}, 364 {16934400, 11025, 1536, 0x19, 0x0}, 365 {12000000, 11025, 1088, 0x19, 0x1}, 366 367 /* 16k */ 368 {12288000, 16000, 768, 0xa, 0x0}, 369 {18432000, 16000, 1152, 0xb, 0x0}, 370 {12000000, 16000, 750, 0xa, 0x1}, 371 372 /* 22.05k */ 373 {11289600, 22050, 512, 0x1a, 0x0}, 374 {16934400, 22050, 768, 0x1b, 0x0}, 375 {12000000, 22050, 544, 0x1b, 0x1}, 376 377 /* 32k */ 378 {12288000, 32000, 384, 0xc, 0x0}, 379 {18432000, 32000, 576, 0xd, 0x0}, 380 {12000000, 32000, 375, 0xa, 0x1}, 381 382 /* 44.1k */ 383 {11289600, 44100, 256, 0x10, 0x0}, 384 {16934400, 44100, 384, 0x11, 0x0}, 385 {12000000, 44100, 272, 0x11, 0x1}, 386 387 /* 48k */ 388 {12288000, 48000, 256, 0x0, 0x0}, 389 {18432000, 48000, 384, 0x1, 0x0}, 390 {12000000, 48000, 250, 0x0, 0x1}, 391 392 /* 88.2k */ 393 {11289600, 88200, 128, 0x1e, 0x0}, 394 {16934400, 88200, 192, 0x1f, 0x0}, 395 {12000000, 88200, 136, 0x1f, 0x1}, 396 397 /* 96k */ 398 {12288000, 96000, 128, 0xe, 0x0}, 399 {18432000, 96000, 192, 0xf, 0x0}, 400 {12000000, 96000, 125, 0xe, 0x1}, 401 }; 402 403 static int get_coeff(int mclk, int rate) 404 { 405 int i; 406 407 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { 408 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) 409 return i; 410 } 411 return -EINVAL; 412 } 413 414 static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai, 415 int clk_id, unsigned int freq, int dir) 416 { 417 struct snd_soc_codec *codec = codec_dai->codec; 418 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec); 419 420 switch (freq) { 421 case 11289600: 422 case 12000000: 423 case 12288000: 424 case 16934400: 425 case 18432000: 426 wm8971->sysclk = freq; 427 return 0; 428 } 429 return -EINVAL; 430 } 431 432 static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai, 433 unsigned int fmt) 434 { 435 struct snd_soc_codec *codec = codec_dai->codec; 436 u16 iface = 0; 437 438 /* set master/slave audio interface */ 439 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 440 case SND_SOC_DAIFMT_CBM_CFM: 441 iface = 0x0040; 442 break; 443 case SND_SOC_DAIFMT_CBS_CFS: 444 break; 445 default: 446 return -EINVAL; 447 } 448 449 /* interface format */ 450 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 451 case SND_SOC_DAIFMT_I2S: 452 iface |= 0x0002; 453 break; 454 case SND_SOC_DAIFMT_RIGHT_J: 455 break; 456 case SND_SOC_DAIFMT_LEFT_J: 457 iface |= 0x0001; 458 break; 459 case SND_SOC_DAIFMT_DSP_A: 460 iface |= 0x0003; 461 break; 462 case SND_SOC_DAIFMT_DSP_B: 463 iface |= 0x0013; 464 break; 465 default: 466 return -EINVAL; 467 } 468 469 /* clock inversion */ 470 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 471 case SND_SOC_DAIFMT_NB_NF: 472 break; 473 case SND_SOC_DAIFMT_IB_IF: 474 iface |= 0x0090; 475 break; 476 case SND_SOC_DAIFMT_IB_NF: 477 iface |= 0x0080; 478 break; 479 case SND_SOC_DAIFMT_NB_IF: 480 iface |= 0x0010; 481 break; 482 default: 483 return -EINVAL; 484 } 485 486 snd_soc_write(codec, WM8971_IFACE, iface); 487 return 0; 488 } 489 490 static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream, 491 struct snd_pcm_hw_params *params, 492 struct snd_soc_dai *dai) 493 { 494 struct snd_soc_pcm_runtime *rtd = substream->private_data; 495 struct snd_soc_device *socdev = rtd->socdev; 496 struct snd_soc_codec *codec = socdev->card->codec; 497 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec); 498 u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3; 499 u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0; 500 int coeff = get_coeff(wm8971->sysclk, params_rate(params)); 501 502 /* bit size */ 503 switch (params_format(params)) { 504 case SNDRV_PCM_FORMAT_S16_LE: 505 break; 506 case SNDRV_PCM_FORMAT_S20_3LE: 507 iface |= 0x0004; 508 break; 509 case SNDRV_PCM_FORMAT_S24_LE: 510 iface |= 0x0008; 511 break; 512 case SNDRV_PCM_FORMAT_S32_LE: 513 iface |= 0x000c; 514 break; 515 } 516 517 /* set iface & srate */ 518 snd_soc_write(codec, WM8971_IFACE, iface); 519 if (coeff >= 0) 520 snd_soc_write(codec, WM8971_SRATE, srate | 521 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb); 522 523 return 0; 524 } 525 526 static int wm8971_mute(struct snd_soc_dai *dai, int mute) 527 { 528 struct snd_soc_codec *codec = dai->codec; 529 u16 mute_reg = snd_soc_read(codec, WM8971_ADCDAC) & 0xfff7; 530 531 if (mute) 532 snd_soc_write(codec, WM8971_ADCDAC, mute_reg | 0x8); 533 else 534 snd_soc_write(codec, WM8971_ADCDAC, mute_reg); 535 return 0; 536 } 537 538 static int wm8971_set_bias_level(struct snd_soc_codec *codec, 539 enum snd_soc_bias_level level) 540 { 541 u16 pwr_reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; 542 543 switch (level) { 544 case SND_SOC_BIAS_ON: 545 /* set vmid to 50k and unmute dac */ 546 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x00c1); 547 break; 548 case SND_SOC_BIAS_PREPARE: 549 break; 550 case SND_SOC_BIAS_STANDBY: 551 /* mute dac and set vmid to 500k, enable VREF */ 552 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x0140); 553 break; 554 case SND_SOC_BIAS_OFF: 555 snd_soc_write(codec, WM8971_PWR1, 0x0001); 556 break; 557 } 558 codec->bias_level = level; 559 return 0; 560 } 561 562 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 563 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ 564 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) 565 566 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 567 SNDRV_PCM_FMTBIT_S24_LE) 568 569 static struct snd_soc_dai_ops wm8971_dai_ops = { 570 .hw_params = wm8971_pcm_hw_params, 571 .digital_mute = wm8971_mute, 572 .set_fmt = wm8971_set_dai_fmt, 573 .set_sysclk = wm8971_set_dai_sysclk, 574 }; 575 576 struct snd_soc_dai wm8971_dai = { 577 .name = "WM8971", 578 .playback = { 579 .stream_name = "Playback", 580 .channels_min = 1, 581 .channels_max = 2, 582 .rates = WM8971_RATES, 583 .formats = WM8971_FORMATS,}, 584 .capture = { 585 .stream_name = "Capture", 586 .channels_min = 1, 587 .channels_max = 2, 588 .rates = WM8971_RATES, 589 .formats = WM8971_FORMATS,}, 590 .ops = &wm8971_dai_ops, 591 }; 592 EXPORT_SYMBOL_GPL(wm8971_dai); 593 594 static void wm8971_work(struct work_struct *work) 595 { 596 struct snd_soc_codec *codec = 597 container_of(work, struct snd_soc_codec, delayed_work.work); 598 wm8971_set_bias_level(codec, codec->bias_level); 599 } 600 601 static int wm8971_suspend(struct platform_device *pdev, pm_message_t state) 602 { 603 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 604 struct snd_soc_codec *codec = socdev->card->codec; 605 606 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); 607 return 0; 608 } 609 610 static int wm8971_resume(struct platform_device *pdev) 611 { 612 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 613 struct snd_soc_codec *codec = socdev->card->codec; 614 int i; 615 u8 data[2]; 616 u16 *cache = codec->reg_cache; 617 u16 reg; 618 619 /* Sync reg_cache with the hardware */ 620 for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) { 621 if (i + 1 == WM8971_RESET) 622 continue; 623 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 624 data[1] = cache[i] & 0x00ff; 625 codec->hw_write(codec->control_data, data, 2); 626 } 627 628 wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 629 630 /* charge wm8971 caps */ 631 if (codec->suspend_bias_level == SND_SOC_BIAS_ON) { 632 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; 633 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0); 634 codec->bias_level = SND_SOC_BIAS_ON; 635 queue_delayed_work(wm8971_workq, &codec->delayed_work, 636 msecs_to_jiffies(1000)); 637 } 638 639 return 0; 640 } 641 642 static int wm8971_init(struct snd_soc_device *socdev, 643 enum snd_soc_control_type control) 644 { 645 struct snd_soc_codec *codec = socdev->card->codec; 646 int reg, ret = 0; 647 648 codec->name = "WM8971"; 649 codec->owner = THIS_MODULE; 650 codec->set_bias_level = wm8971_set_bias_level; 651 codec->dai = &wm8971_dai; 652 codec->reg_cache_size = ARRAY_SIZE(wm8971_reg); 653 codec->num_dai = 1; 654 codec->reg_cache = kmemdup(wm8971_reg, sizeof(wm8971_reg), GFP_KERNEL); 655 656 if (codec->reg_cache == NULL) 657 return -ENOMEM; 658 659 ret = snd_soc_codec_set_cache_io(codec, 7, 9, control); 660 if (ret < 0) { 661 printk(KERN_ERR "wm8971: failed to set cache I/O: %d\n", ret); 662 goto err; 663 } 664 665 wm8971_reset(codec); 666 667 /* register pcms */ 668 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 669 if (ret < 0) { 670 printk(KERN_ERR "wm8971: failed to create pcms\n"); 671 goto err; 672 } 673 674 /* charge output caps - set vmid to 5k for quick power up */ 675 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; 676 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0); 677 codec->bias_level = SND_SOC_BIAS_STANDBY; 678 queue_delayed_work(wm8971_workq, &codec->delayed_work, 679 msecs_to_jiffies(1000)); 680 681 /* set the update bits */ 682 reg = snd_soc_read(codec, WM8971_LDAC); 683 snd_soc_write(codec, WM8971_LDAC, reg | 0x0100); 684 reg = snd_soc_read(codec, WM8971_RDAC); 685 snd_soc_write(codec, WM8971_RDAC, reg | 0x0100); 686 687 reg = snd_soc_read(codec, WM8971_LOUT1V); 688 snd_soc_write(codec, WM8971_LOUT1V, reg | 0x0100); 689 reg = snd_soc_read(codec, WM8971_ROUT1V); 690 snd_soc_write(codec, WM8971_ROUT1V, reg | 0x0100); 691 692 reg = snd_soc_read(codec, WM8971_LOUT2V); 693 snd_soc_write(codec, WM8971_LOUT2V, reg | 0x0100); 694 reg = snd_soc_read(codec, WM8971_ROUT2V); 695 snd_soc_write(codec, WM8971_ROUT2V, reg | 0x0100); 696 697 reg = snd_soc_read(codec, WM8971_LINVOL); 698 snd_soc_write(codec, WM8971_LINVOL, reg | 0x0100); 699 reg = snd_soc_read(codec, WM8971_RINVOL); 700 snd_soc_write(codec, WM8971_RINVOL, reg | 0x0100); 701 702 snd_soc_add_controls(codec, wm8971_snd_controls, 703 ARRAY_SIZE(wm8971_snd_controls)); 704 wm8971_add_widgets(codec); 705 706 return ret; 707 708 err: 709 kfree(codec->reg_cache); 710 return ret; 711 } 712 713 /* If the i2c layer weren't so broken, we could pass this kind of data 714 around */ 715 static struct snd_soc_device *wm8971_socdev; 716 717 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) 718 719 static int wm8971_i2c_probe(struct i2c_client *i2c, 720 const struct i2c_device_id *id) 721 { 722 struct snd_soc_device *socdev = wm8971_socdev; 723 struct snd_soc_codec *codec = socdev->card->codec; 724 int ret; 725 726 i2c_set_clientdata(i2c, codec); 727 728 codec->control_data = i2c; 729 730 ret = wm8971_init(socdev, SND_SOC_I2C); 731 if (ret < 0) 732 pr_err("failed to initialise WM8971\n"); 733 734 return ret; 735 } 736 737 static int wm8971_i2c_remove(struct i2c_client *client) 738 { 739 struct snd_soc_codec *codec = i2c_get_clientdata(client); 740 kfree(codec->reg_cache); 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 I2C Codec", 753 .owner = THIS_MODULE, 754 }, 755 .probe = wm8971_i2c_probe, 756 .remove = wm8971_i2c_remove, 757 .id_table = wm8971_i2c_id, 758 }; 759 760 static int wm8971_add_i2c_device(struct platform_device *pdev, 761 const struct wm8971_setup_data *setup) 762 { 763 struct i2c_board_info info; 764 struct i2c_adapter *adapter; 765 struct i2c_client *client; 766 int ret; 767 768 ret = i2c_add_driver(&wm8971_i2c_driver); 769 if (ret != 0) { 770 dev_err(&pdev->dev, "can't add i2c driver\n"); 771 return ret; 772 } 773 774 memset(&info, 0, sizeof(struct i2c_board_info)); 775 info.addr = setup->i2c_address; 776 strlcpy(info.type, "wm8971", I2C_NAME_SIZE); 777 778 adapter = i2c_get_adapter(setup->i2c_bus); 779 if (!adapter) { 780 dev_err(&pdev->dev, "can't get i2c adapter %d\n", 781 setup->i2c_bus); 782 goto err_driver; 783 } 784 785 client = i2c_new_device(adapter, &info); 786 i2c_put_adapter(adapter); 787 if (!client) { 788 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", 789 (unsigned int)info.addr); 790 goto err_driver; 791 } 792 793 return 0; 794 795 err_driver: 796 i2c_del_driver(&wm8971_i2c_driver); 797 return -ENODEV; 798 } 799 800 #endif 801 802 static int wm8971_probe(struct platform_device *pdev) 803 { 804 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 805 struct wm8971_setup_data *setup; 806 struct snd_soc_codec *codec; 807 struct wm8971_priv *wm8971; 808 int ret = 0; 809 810 pr_info("WM8971 Audio Codec %s", WM8971_VERSION); 811 812 setup = socdev->codec_data; 813 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 814 if (codec == NULL) 815 return -ENOMEM; 816 817 wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL); 818 if (wm8971 == NULL) { 819 kfree(codec); 820 return -ENOMEM; 821 } 822 823 snd_soc_codec_set_drvdata(codec, wm8971); 824 socdev->card->codec = codec; 825 mutex_init(&codec->mutex); 826 INIT_LIST_HEAD(&codec->dapm_widgets); 827 INIT_LIST_HEAD(&codec->dapm_paths); 828 wm8971_socdev = socdev; 829 830 INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work); 831 wm8971_workq = create_workqueue("wm8971"); 832 if (wm8971_workq == NULL) { 833 kfree(snd_soc_codec_get_drvdata(codec)); 834 kfree(codec); 835 return -ENOMEM; 836 } 837 838 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) 839 if (setup->i2c_address) { 840 ret = wm8971_add_i2c_device(pdev, setup); 841 } 842 #endif 843 /* Add other interfaces here */ 844 845 if (ret != 0) { 846 destroy_workqueue(wm8971_workq); 847 kfree(snd_soc_codec_get_drvdata(codec)); 848 kfree(codec); 849 } 850 851 return ret; 852 } 853 854 /* power down chip */ 855 static int wm8971_remove(struct platform_device *pdev) 856 { 857 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 858 struct snd_soc_codec *codec = socdev->card->codec; 859 860 if (codec->control_data) 861 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); 862 if (wm8971_workq) 863 destroy_workqueue(wm8971_workq); 864 snd_soc_free_pcms(socdev); 865 snd_soc_dapm_free(socdev); 866 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) 867 i2c_unregister_device(codec->control_data); 868 i2c_del_driver(&wm8971_i2c_driver); 869 #endif 870 kfree(snd_soc_codec_get_drvdata(codec)); 871 kfree(codec); 872 873 return 0; 874 } 875 876 struct snd_soc_codec_device soc_codec_dev_wm8971 = { 877 .probe = wm8971_probe, 878 .remove = wm8971_remove, 879 .suspend = wm8971_suspend, 880 .resume = wm8971_resume, 881 }; 882 883 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8971); 884 885 static int __init wm8971_modinit(void) 886 { 887 return snd_soc_register_dai(&wm8971_dai); 888 } 889 module_init(wm8971_modinit); 890 891 static void __exit wm8971_exit(void) 892 { 893 snd_soc_unregister_dai(&wm8971_dai); 894 } 895 module_exit(wm8971_exit); 896 897 MODULE_DESCRIPTION("ASoC WM8971 driver"); 898 MODULE_AUTHOR("Lab126"); 899 MODULE_LICENSE("GPL"); 900