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 <sound/core.h> 24 #include <sound/pcm.h> 25 #include <sound/pcm_params.h> 26 #include <sound/soc.h> 27 #include <sound/soc-dapm.h> 28 #include <sound/initval.h> 29 30 #include "wm8971.h" 31 32 #define WM8971_VERSION "0.9" 33 34 #define WM8971_REG_COUNT 43 35 36 static struct workqueue_struct *wm8971_workq = NULL; 37 38 /* codec private data */ 39 struct wm8971_priv { 40 unsigned int sysclk; 41 }; 42 43 /* 44 * wm8971 register cache 45 * We can't read the WM8971 register space when we 46 * are using 2 wire for device control, so we cache them instead. 47 */ 48 static const u16 wm8971_reg[] = { 49 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */ 50 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */ 51 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */ 52 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */ 53 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */ 54 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */ 55 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */ 56 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */ 57 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */ 58 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */ 59 0x0079, 0x0079, 0x0079, /* 40 */ 60 }; 61 62 #define wm8971_reset(c) snd_soc_write(c, WM8971_RESET, 0) 63 64 /* WM8971 Controls */ 65 static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" }; 66 static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz", 67 "200Hz @ 48kHz" }; 68 static const char *wm8971_treble[] = { "8kHz", "4kHz" }; 69 static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" }; 70 static const char *wm8971_ng_type[] = { "Constant PGA Gain", 71 "Mute ADC Output" }; 72 static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; 73 static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)", 74 "Mono (Right)", "Digital Mono"}; 75 static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" }; 76 static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA", 77 "Differential"}; 78 static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA", 79 "Differential"}; 80 static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"}; 81 static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"}; 82 static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert", 83 "L + R Invert"}; 84 85 static const struct soc_enum wm8971_enum[] = { 86 SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass), /* 0 */ 87 SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter), 88 SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble), 89 SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func), 90 SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type), /* 4 */ 91 SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp), 92 SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux), 93 SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase), 94 SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */ 95 SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux), 96 SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel), 97 SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel), 98 SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol), /* 12 */ 99 SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux), 100 }; 101 102 static const struct snd_kcontrol_new wm8971_snd_controls[] = { 103 SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0), 104 SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL, 105 6, 1, 0), 106 SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1), 107 108 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V, 109 WM8971_ROUT1V, 7, 1, 0), 110 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V, 111 WM8971_ROUT2V, 7, 1, 0), 112 SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0), 113 114 SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0), 115 116 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1, 117 WM8971_LOUTM2, 4, 7, 1), 118 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1, 119 WM8971_ROUTM2, 4, 7, 1), 120 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1, 121 WM8971_MOUTM2, 4, 7, 1), 122 123 SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V, 124 WM8971_ROUT1V, 0, 127, 0), 125 SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V, 126 WM8971_ROUT2V, 0, 127, 0), 127 128 SOC_ENUM("Bass Boost", wm8971_enum[0]), 129 SOC_ENUM("Bass Filter", wm8971_enum[1]), 130 SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1), 131 132 SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0), 133 SOC_ENUM("Treble Cut-off", wm8971_enum[2]), 134 135 SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1), 136 137 SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0), 138 SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0), 139 140 SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0), 141 SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0), 142 SOC_ENUM("ALC Capture Function", wm8971_enum[3]), 143 SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0), 144 SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0), 145 SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0), 146 SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0), 147 SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0), 148 SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]), 149 SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0), 150 151 SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0), 152 SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0), 153 154 SOC_ENUM("Playback De-emphasis", wm8971_enum[5]), 155 SOC_ENUM("Playback Function", wm8971_enum[6]), 156 SOC_ENUM("Playback Phase", wm8971_enum[7]), 157 158 SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0), 159 }; 160 161 /* 162 * DAPM Controls 163 */ 164 165 /* Left Mixer */ 166 static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = { 167 SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0), 168 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0), 169 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0), 170 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0), 171 }; 172 173 /* Right Mixer */ 174 static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = { 175 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0), 176 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0), 177 SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0), 178 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0), 179 }; 180 181 /* Mono Mixer */ 182 static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = { 183 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0), 184 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0), 185 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0), 186 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0), 187 }; 188 189 /* Left Line Mux */ 190 static const struct snd_kcontrol_new wm8971_left_line_controls = 191 SOC_DAPM_ENUM("Route", wm8971_enum[8]); 192 193 /* Right Line Mux */ 194 static const struct snd_kcontrol_new wm8971_right_line_controls = 195 SOC_DAPM_ENUM("Route", wm8971_enum[9]); 196 197 /* Left PGA Mux */ 198 static const struct snd_kcontrol_new wm8971_left_pga_controls = 199 SOC_DAPM_ENUM("Route", wm8971_enum[10]); 200 201 /* Right PGA Mux */ 202 static const struct snd_kcontrol_new wm8971_right_pga_controls = 203 SOC_DAPM_ENUM("Route", wm8971_enum[11]); 204 205 /* Mono ADC Mux */ 206 static const struct snd_kcontrol_new wm8971_monomux_controls = 207 SOC_DAPM_ENUM("Route", wm8971_enum[13]); 208 209 static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = { 210 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0, 211 &wm8971_left_mixer_controls[0], 212 ARRAY_SIZE(wm8971_left_mixer_controls)), 213 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0, 214 &wm8971_right_mixer_controls[0], 215 ARRAY_SIZE(wm8971_right_mixer_controls)), 216 SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0, 217 &wm8971_mono_mixer_controls[0], 218 ARRAY_SIZE(wm8971_mono_mixer_controls)), 219 220 SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0), 221 SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0), 222 SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0), 223 SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0), 224 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0), 225 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0), 226 SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0), 227 228 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8971_PWR1, 1, 0), 229 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0), 230 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0), 231 232 SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0, 233 &wm8971_left_pga_controls), 234 SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0, 235 &wm8971_right_pga_controls), 236 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0, 237 &wm8971_left_line_controls), 238 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0, 239 &wm8971_right_line_controls), 240 241 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0, 242 &wm8971_monomux_controls), 243 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0, 244 &wm8971_monomux_controls), 245 246 SND_SOC_DAPM_OUTPUT("LOUT1"), 247 SND_SOC_DAPM_OUTPUT("ROUT1"), 248 SND_SOC_DAPM_OUTPUT("LOUT2"), 249 SND_SOC_DAPM_OUTPUT("ROUT2"), 250 SND_SOC_DAPM_OUTPUT("MONO"), 251 252 SND_SOC_DAPM_INPUT("LINPUT1"), 253 SND_SOC_DAPM_INPUT("RINPUT1"), 254 SND_SOC_DAPM_INPUT("MIC"), 255 }; 256 257 static const struct snd_soc_dapm_route audio_map[] = { 258 /* left mixer */ 259 {"Left Mixer", "Playback Switch", "Left DAC"}, 260 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"}, 261 {"Left Mixer", "Right Playback Switch", "Right DAC"}, 262 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"}, 263 264 /* right mixer */ 265 {"Right Mixer", "Left Playback Switch", "Left DAC"}, 266 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"}, 267 {"Right Mixer", "Playback Switch", "Right DAC"}, 268 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"}, 269 270 /* left out 1 */ 271 {"Left Out 1", NULL, "Left Mixer"}, 272 {"LOUT1", NULL, "Left Out 1"}, 273 274 /* left out 2 */ 275 {"Left Out 2", NULL, "Left Mixer"}, 276 {"LOUT2", NULL, "Left Out 2"}, 277 278 /* right out 1 */ 279 {"Right Out 1", NULL, "Right Mixer"}, 280 {"ROUT1", NULL, "Right Out 1"}, 281 282 /* right out 2 */ 283 {"Right Out 2", NULL, "Right Mixer"}, 284 {"ROUT2", NULL, "Right Out 2"}, 285 286 /* mono mixer */ 287 {"Mono Mixer", "Left Playback Switch", "Left DAC"}, 288 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"}, 289 {"Mono Mixer", "Right Playback Switch", "Right DAC"}, 290 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"}, 291 292 /* mono out */ 293 {"Mono Out", NULL, "Mono Mixer"}, 294 {"MONO1", NULL, "Mono Out"}, 295 296 /* Left Line Mux */ 297 {"Left Line Mux", "Line", "LINPUT1"}, 298 {"Left Line Mux", "PGA", "Left PGA Mux"}, 299 {"Left Line Mux", "Differential", "Differential Mux"}, 300 301 /* Right Line Mux */ 302 {"Right Line Mux", "Line", "RINPUT1"}, 303 {"Right Line Mux", "Mic", "MIC"}, 304 {"Right Line Mux", "PGA", "Right PGA Mux"}, 305 {"Right Line Mux", "Differential", "Differential Mux"}, 306 307 /* Left PGA Mux */ 308 {"Left PGA Mux", "Line", "LINPUT1"}, 309 {"Left PGA Mux", "Differential", "Differential Mux"}, 310 311 /* Right PGA Mux */ 312 {"Right PGA Mux", "Line", "RINPUT1"}, 313 {"Right PGA Mux", "Differential", "Differential Mux"}, 314 315 /* Differential Mux */ 316 {"Differential Mux", "Line", "LINPUT1"}, 317 {"Differential Mux", "Line", "RINPUT1"}, 318 319 /* Left ADC Mux */ 320 {"Left ADC Mux", "Stereo", "Left PGA Mux"}, 321 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"}, 322 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"}, 323 324 /* Right ADC Mux */ 325 {"Right ADC Mux", "Stereo", "Right PGA Mux"}, 326 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"}, 327 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"}, 328 329 /* ADC */ 330 {"Left ADC", NULL, "Left ADC Mux"}, 331 {"Right ADC", NULL, "Right ADC Mux"}, 332 }; 333 334 static int wm8971_add_widgets(struct snd_soc_codec *codec) 335 { 336 snd_soc_dapm_new_controls(codec, wm8971_dapm_widgets, 337 ARRAY_SIZE(wm8971_dapm_widgets)); 338 339 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 340 341 return 0; 342 } 343 344 struct _coeff_div { 345 u32 mclk; 346 u32 rate; 347 u16 fs; 348 u8 sr:5; 349 u8 usb:1; 350 }; 351 352 /* codec hifi mclk clock divider coefficients */ 353 static const struct _coeff_div coeff_div[] = { 354 /* 8k */ 355 {12288000, 8000, 1536, 0x6, 0x0}, 356 {11289600, 8000, 1408, 0x16, 0x0}, 357 {18432000, 8000, 2304, 0x7, 0x0}, 358 {16934400, 8000, 2112, 0x17, 0x0}, 359 {12000000, 8000, 1500, 0x6, 0x1}, 360 361 /* 11.025k */ 362 {11289600, 11025, 1024, 0x18, 0x0}, 363 {16934400, 11025, 1536, 0x19, 0x0}, 364 {12000000, 11025, 1088, 0x19, 0x1}, 365 366 /* 16k */ 367 {12288000, 16000, 768, 0xa, 0x0}, 368 {18432000, 16000, 1152, 0xb, 0x0}, 369 {12000000, 16000, 750, 0xa, 0x1}, 370 371 /* 22.05k */ 372 {11289600, 22050, 512, 0x1a, 0x0}, 373 {16934400, 22050, 768, 0x1b, 0x0}, 374 {12000000, 22050, 544, 0x1b, 0x1}, 375 376 /* 32k */ 377 {12288000, 32000, 384, 0xc, 0x0}, 378 {18432000, 32000, 576, 0xd, 0x0}, 379 {12000000, 32000, 375, 0xa, 0x1}, 380 381 /* 44.1k */ 382 {11289600, 44100, 256, 0x10, 0x0}, 383 {16934400, 44100, 384, 0x11, 0x0}, 384 {12000000, 44100, 272, 0x11, 0x1}, 385 386 /* 48k */ 387 {12288000, 48000, 256, 0x0, 0x0}, 388 {18432000, 48000, 384, 0x1, 0x0}, 389 {12000000, 48000, 250, 0x0, 0x1}, 390 391 /* 88.2k */ 392 {11289600, 88200, 128, 0x1e, 0x0}, 393 {16934400, 88200, 192, 0x1f, 0x0}, 394 {12000000, 88200, 136, 0x1f, 0x1}, 395 396 /* 96k */ 397 {12288000, 96000, 128, 0xe, 0x0}, 398 {18432000, 96000, 192, 0xf, 0x0}, 399 {12000000, 96000, 125, 0xe, 0x1}, 400 }; 401 402 static int get_coeff(int mclk, int rate) 403 { 404 int i; 405 406 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { 407 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) 408 return i; 409 } 410 return -EINVAL; 411 } 412 413 static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai, 414 int clk_id, unsigned int freq, int dir) 415 { 416 struct snd_soc_codec *codec = codec_dai->codec; 417 struct wm8971_priv *wm8971 = codec->private_data; 418 419 switch (freq) { 420 case 11289600: 421 case 12000000: 422 case 12288000: 423 case 16934400: 424 case 18432000: 425 wm8971->sysclk = freq; 426 return 0; 427 } 428 return -EINVAL; 429 } 430 431 static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai, 432 unsigned int fmt) 433 { 434 struct snd_soc_codec *codec = codec_dai->codec; 435 u16 iface = 0; 436 437 /* set master/slave audio interface */ 438 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 439 case SND_SOC_DAIFMT_CBM_CFM: 440 iface = 0x0040; 441 break; 442 case SND_SOC_DAIFMT_CBS_CFS: 443 break; 444 default: 445 return -EINVAL; 446 } 447 448 /* interface format */ 449 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 450 case SND_SOC_DAIFMT_I2S: 451 iface |= 0x0002; 452 break; 453 case SND_SOC_DAIFMT_RIGHT_J: 454 break; 455 case SND_SOC_DAIFMT_LEFT_J: 456 iface |= 0x0001; 457 break; 458 case SND_SOC_DAIFMT_DSP_A: 459 iface |= 0x0003; 460 break; 461 case SND_SOC_DAIFMT_DSP_B: 462 iface |= 0x0013; 463 break; 464 default: 465 return -EINVAL; 466 } 467 468 /* clock inversion */ 469 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 470 case SND_SOC_DAIFMT_NB_NF: 471 break; 472 case SND_SOC_DAIFMT_IB_IF: 473 iface |= 0x0090; 474 break; 475 case SND_SOC_DAIFMT_IB_NF: 476 iface |= 0x0080; 477 break; 478 case SND_SOC_DAIFMT_NB_IF: 479 iface |= 0x0010; 480 break; 481 default: 482 return -EINVAL; 483 } 484 485 snd_soc_write(codec, WM8971_IFACE, iface); 486 return 0; 487 } 488 489 static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream, 490 struct snd_pcm_hw_params *params, 491 struct snd_soc_dai *dai) 492 { 493 struct snd_soc_pcm_runtime *rtd = substream->private_data; 494 struct snd_soc_device *socdev = rtd->socdev; 495 struct snd_soc_codec *codec = socdev->card->codec; 496 struct wm8971_priv *wm8971 = codec->private_data; 497 u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3; 498 u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0; 499 int coeff = get_coeff(wm8971->sysclk, params_rate(params)); 500 501 /* bit size */ 502 switch (params_format(params)) { 503 case SNDRV_PCM_FORMAT_S16_LE: 504 break; 505 case SNDRV_PCM_FORMAT_S20_3LE: 506 iface |= 0x0004; 507 break; 508 case SNDRV_PCM_FORMAT_S24_LE: 509 iface |= 0x0008; 510 break; 511 case SNDRV_PCM_FORMAT_S32_LE: 512 iface |= 0x000c; 513 break; 514 } 515 516 /* set iface & srate */ 517 snd_soc_write(codec, WM8971_IFACE, iface); 518 if (coeff >= 0) 519 snd_soc_write(codec, WM8971_SRATE, srate | 520 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb); 521 522 return 0; 523 } 524 525 static int wm8971_mute(struct snd_soc_dai *dai, int mute) 526 { 527 struct snd_soc_codec *codec = dai->codec; 528 u16 mute_reg = snd_soc_read(codec, WM8971_ADCDAC) & 0xfff7; 529 530 if (mute) 531 snd_soc_write(codec, WM8971_ADCDAC, mute_reg | 0x8); 532 else 533 snd_soc_write(codec, WM8971_ADCDAC, mute_reg); 534 return 0; 535 } 536 537 static int wm8971_set_bias_level(struct snd_soc_codec *codec, 538 enum snd_soc_bias_level level) 539 { 540 u16 pwr_reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; 541 542 switch (level) { 543 case SND_SOC_BIAS_ON: 544 /* set vmid to 50k and unmute dac */ 545 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x00c1); 546 break; 547 case SND_SOC_BIAS_PREPARE: 548 break; 549 case SND_SOC_BIAS_STANDBY: 550 /* mute dac and set vmid to 500k, enable VREF */ 551 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x0140); 552 break; 553 case SND_SOC_BIAS_OFF: 554 snd_soc_write(codec, WM8971_PWR1, 0x0001); 555 break; 556 } 557 codec->bias_level = level; 558 return 0; 559 } 560 561 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 562 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ 563 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) 564 565 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 566 SNDRV_PCM_FMTBIT_S24_LE) 567 568 static struct snd_soc_dai_ops wm8971_dai_ops = { 569 .hw_params = wm8971_pcm_hw_params, 570 .digital_mute = wm8971_mute, 571 .set_fmt = wm8971_set_dai_fmt, 572 .set_sysclk = wm8971_set_dai_sysclk, 573 }; 574 575 struct snd_soc_dai wm8971_dai = { 576 .name = "WM8971", 577 .playback = { 578 .stream_name = "Playback", 579 .channels_min = 1, 580 .channels_max = 2, 581 .rates = WM8971_RATES, 582 .formats = WM8971_FORMATS,}, 583 .capture = { 584 .stream_name = "Capture", 585 .channels_min = 1, 586 .channels_max = 2, 587 .rates = WM8971_RATES, 588 .formats = WM8971_FORMATS,}, 589 .ops = &wm8971_dai_ops, 590 }; 591 EXPORT_SYMBOL_GPL(wm8971_dai); 592 593 static void wm8971_work(struct work_struct *work) 594 { 595 struct snd_soc_codec *codec = 596 container_of(work, struct snd_soc_codec, delayed_work.work); 597 wm8971_set_bias_level(codec, codec->bias_level); 598 } 599 600 static int wm8971_suspend(struct platform_device *pdev, pm_message_t state) 601 { 602 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 603 struct snd_soc_codec *codec = socdev->card->codec; 604 605 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); 606 return 0; 607 } 608 609 static int wm8971_resume(struct platform_device *pdev) 610 { 611 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 612 struct snd_soc_codec *codec = socdev->card->codec; 613 int i; 614 u8 data[2]; 615 u16 *cache = codec->reg_cache; 616 u16 reg; 617 618 /* Sync reg_cache with the hardware */ 619 for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) { 620 if (i + 1 == WM8971_RESET) 621 continue; 622 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 623 data[1] = cache[i] & 0x00ff; 624 codec->hw_write(codec->control_data, data, 2); 625 } 626 627 wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 628 629 /* charge wm8971 caps */ 630 if (codec->suspend_bias_level == SND_SOC_BIAS_ON) { 631 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; 632 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0); 633 codec->bias_level = SND_SOC_BIAS_ON; 634 queue_delayed_work(wm8971_workq, &codec->delayed_work, 635 msecs_to_jiffies(1000)); 636 } 637 638 return 0; 639 } 640 641 static int wm8971_init(struct snd_soc_device *socdev, 642 enum snd_soc_control_type control) 643 { 644 struct snd_soc_codec *codec = socdev->card->codec; 645 int reg, ret = 0; 646 647 codec->name = "WM8971"; 648 codec->owner = THIS_MODULE; 649 codec->set_bias_level = wm8971_set_bias_level; 650 codec->dai = &wm8971_dai; 651 codec->reg_cache_size = ARRAY_SIZE(wm8971_reg); 652 codec->num_dai = 1; 653 codec->reg_cache = kmemdup(wm8971_reg, sizeof(wm8971_reg), GFP_KERNEL); 654 655 if (codec->reg_cache == NULL) 656 return -ENOMEM; 657 658 ret = snd_soc_codec_set_cache_io(codec, 7, 9, control); 659 if (ret < 0) { 660 printk(KERN_ERR "wm8971: failed to set cache I/O: %d\n", ret); 661 goto err; 662 } 663 664 wm8971_reset(codec); 665 666 /* register pcms */ 667 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 668 if (ret < 0) { 669 printk(KERN_ERR "wm8971: failed to create pcms\n"); 670 goto err; 671 } 672 673 /* charge output caps - set vmid to 5k for quick power up */ 674 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; 675 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0); 676 codec->bias_level = SND_SOC_BIAS_STANDBY; 677 queue_delayed_work(wm8971_workq, &codec->delayed_work, 678 msecs_to_jiffies(1000)); 679 680 /* set the update bits */ 681 reg = snd_soc_read(codec, WM8971_LDAC); 682 snd_soc_write(codec, WM8971_LDAC, reg | 0x0100); 683 reg = snd_soc_read(codec, WM8971_RDAC); 684 snd_soc_write(codec, WM8971_RDAC, reg | 0x0100); 685 686 reg = snd_soc_read(codec, WM8971_LOUT1V); 687 snd_soc_write(codec, WM8971_LOUT1V, reg | 0x0100); 688 reg = snd_soc_read(codec, WM8971_ROUT1V); 689 snd_soc_write(codec, WM8971_ROUT1V, reg | 0x0100); 690 691 reg = snd_soc_read(codec, WM8971_LOUT2V); 692 snd_soc_write(codec, WM8971_LOUT2V, reg | 0x0100); 693 reg = snd_soc_read(codec, WM8971_ROUT2V); 694 snd_soc_write(codec, WM8971_ROUT2V, reg | 0x0100); 695 696 reg = snd_soc_read(codec, WM8971_LINVOL); 697 snd_soc_write(codec, WM8971_LINVOL, reg | 0x0100); 698 reg = snd_soc_read(codec, WM8971_RINVOL); 699 snd_soc_write(codec, WM8971_RINVOL, reg | 0x0100); 700 701 snd_soc_add_controls(codec, wm8971_snd_controls, 702 ARRAY_SIZE(wm8971_snd_controls)); 703 wm8971_add_widgets(codec); 704 705 return ret; 706 707 err: 708 kfree(codec->reg_cache); 709 return ret; 710 } 711 712 /* If the i2c layer weren't so broken, we could pass this kind of data 713 around */ 714 static struct snd_soc_device *wm8971_socdev; 715 716 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) 717 718 static int wm8971_i2c_probe(struct i2c_client *i2c, 719 const struct i2c_device_id *id) 720 { 721 struct snd_soc_device *socdev = wm8971_socdev; 722 struct snd_soc_codec *codec = socdev->card->codec; 723 int ret; 724 725 i2c_set_clientdata(i2c, codec); 726 727 codec->control_data = i2c; 728 729 ret = wm8971_init(socdev, SND_SOC_I2C); 730 if (ret < 0) 731 pr_err("failed to initialise WM8971\n"); 732 733 return ret; 734 } 735 736 static int wm8971_i2c_remove(struct i2c_client *client) 737 { 738 struct snd_soc_codec *codec = i2c_get_clientdata(client); 739 kfree(codec->reg_cache); 740 return 0; 741 } 742 743 static const struct i2c_device_id wm8971_i2c_id[] = { 744 { "wm8971", 0 }, 745 { } 746 }; 747 MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id); 748 749 static struct i2c_driver wm8971_i2c_driver = { 750 .driver = { 751 .name = "WM8971 I2C Codec", 752 .owner = THIS_MODULE, 753 }, 754 .probe = wm8971_i2c_probe, 755 .remove = wm8971_i2c_remove, 756 .id_table = wm8971_i2c_id, 757 }; 758 759 static int wm8971_add_i2c_device(struct platform_device *pdev, 760 const struct wm8971_setup_data *setup) 761 { 762 struct i2c_board_info info; 763 struct i2c_adapter *adapter; 764 struct i2c_client *client; 765 int ret; 766 767 ret = i2c_add_driver(&wm8971_i2c_driver); 768 if (ret != 0) { 769 dev_err(&pdev->dev, "can't add i2c driver\n"); 770 return ret; 771 } 772 773 memset(&info, 0, sizeof(struct i2c_board_info)); 774 info.addr = setup->i2c_address; 775 strlcpy(info.type, "wm8971", I2C_NAME_SIZE); 776 777 adapter = i2c_get_adapter(setup->i2c_bus); 778 if (!adapter) { 779 dev_err(&pdev->dev, "can't get i2c adapter %d\n", 780 setup->i2c_bus); 781 goto err_driver; 782 } 783 784 client = i2c_new_device(adapter, &info); 785 i2c_put_adapter(adapter); 786 if (!client) { 787 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", 788 (unsigned int)info.addr); 789 goto err_driver; 790 } 791 792 return 0; 793 794 err_driver: 795 i2c_del_driver(&wm8971_i2c_driver); 796 return -ENODEV; 797 } 798 799 #endif 800 801 static int wm8971_probe(struct platform_device *pdev) 802 { 803 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 804 struct wm8971_setup_data *setup; 805 struct snd_soc_codec *codec; 806 struct wm8971_priv *wm8971; 807 int ret = 0; 808 809 pr_info("WM8971 Audio Codec %s", WM8971_VERSION); 810 811 setup = socdev->codec_data; 812 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 813 if (codec == NULL) 814 return -ENOMEM; 815 816 wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL); 817 if (wm8971 == NULL) { 818 kfree(codec); 819 return -ENOMEM; 820 } 821 822 codec->private_data = wm8971; 823 socdev->card->codec = codec; 824 mutex_init(&codec->mutex); 825 INIT_LIST_HEAD(&codec->dapm_widgets); 826 INIT_LIST_HEAD(&codec->dapm_paths); 827 wm8971_socdev = socdev; 828 829 INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work); 830 wm8971_workq = create_workqueue("wm8971"); 831 if (wm8971_workq == NULL) { 832 kfree(codec->private_data); 833 kfree(codec); 834 return -ENOMEM; 835 } 836 837 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) 838 if (setup->i2c_address) { 839 ret = wm8971_add_i2c_device(pdev, setup); 840 } 841 #endif 842 /* Add other interfaces here */ 843 844 if (ret != 0) { 845 destroy_workqueue(wm8971_workq); 846 kfree(codec->private_data); 847 kfree(codec); 848 } 849 850 return ret; 851 } 852 853 /* power down chip */ 854 static int wm8971_remove(struct platform_device *pdev) 855 { 856 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 857 struct snd_soc_codec *codec = socdev->card->codec; 858 859 if (codec->control_data) 860 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); 861 if (wm8971_workq) 862 destroy_workqueue(wm8971_workq); 863 snd_soc_free_pcms(socdev); 864 snd_soc_dapm_free(socdev); 865 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) 866 i2c_unregister_device(codec->control_data); 867 i2c_del_driver(&wm8971_i2c_driver); 868 #endif 869 kfree(codec->private_data); 870 kfree(codec); 871 872 return 0; 873 } 874 875 struct snd_soc_codec_device soc_codec_dev_wm8971 = { 876 .probe = wm8971_probe, 877 .remove = wm8971_remove, 878 .suspend = wm8971_suspend, 879 .resume = wm8971_resume, 880 }; 881 882 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8971); 883 884 static int __init wm8971_modinit(void) 885 { 886 return snd_soc_register_dai(&wm8971_dai); 887 } 888 module_init(wm8971_modinit); 889 890 static void __exit wm8971_exit(void) 891 { 892 snd_soc_unregister_dai(&wm8971_dai); 893 } 894 module_exit(wm8971_exit); 895 896 MODULE_DESCRIPTION("ASoC WM8971 driver"); 897 MODULE_AUTHOR("Lab126"); 898 MODULE_LICENSE("GPL"); 899