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 snd_soc_dapm_new_widgets(codec); 342 343 return 0; 344 } 345 346 struct _coeff_div { 347 u32 mclk; 348 u32 rate; 349 u16 fs; 350 u8 sr:5; 351 u8 usb:1; 352 }; 353 354 /* codec hifi mclk clock divider coefficients */ 355 static const struct _coeff_div coeff_div[] = { 356 /* 8k */ 357 {12288000, 8000, 1536, 0x6, 0x0}, 358 {11289600, 8000, 1408, 0x16, 0x0}, 359 {18432000, 8000, 2304, 0x7, 0x0}, 360 {16934400, 8000, 2112, 0x17, 0x0}, 361 {12000000, 8000, 1500, 0x6, 0x1}, 362 363 /* 11.025k */ 364 {11289600, 11025, 1024, 0x18, 0x0}, 365 {16934400, 11025, 1536, 0x19, 0x0}, 366 {12000000, 11025, 1088, 0x19, 0x1}, 367 368 /* 16k */ 369 {12288000, 16000, 768, 0xa, 0x0}, 370 {18432000, 16000, 1152, 0xb, 0x0}, 371 {12000000, 16000, 750, 0xa, 0x1}, 372 373 /* 22.05k */ 374 {11289600, 22050, 512, 0x1a, 0x0}, 375 {16934400, 22050, 768, 0x1b, 0x0}, 376 {12000000, 22050, 544, 0x1b, 0x1}, 377 378 /* 32k */ 379 {12288000, 32000, 384, 0xc, 0x0}, 380 {18432000, 32000, 576, 0xd, 0x0}, 381 {12000000, 32000, 375, 0xa, 0x1}, 382 383 /* 44.1k */ 384 {11289600, 44100, 256, 0x10, 0x0}, 385 {16934400, 44100, 384, 0x11, 0x0}, 386 {12000000, 44100, 272, 0x11, 0x1}, 387 388 /* 48k */ 389 {12288000, 48000, 256, 0x0, 0x0}, 390 {18432000, 48000, 384, 0x1, 0x0}, 391 {12000000, 48000, 250, 0x0, 0x1}, 392 393 /* 88.2k */ 394 {11289600, 88200, 128, 0x1e, 0x0}, 395 {16934400, 88200, 192, 0x1f, 0x0}, 396 {12000000, 88200, 136, 0x1f, 0x1}, 397 398 /* 96k */ 399 {12288000, 96000, 128, 0xe, 0x0}, 400 {18432000, 96000, 192, 0xf, 0x0}, 401 {12000000, 96000, 125, 0xe, 0x1}, 402 }; 403 404 static int get_coeff(int mclk, int rate) 405 { 406 int i; 407 408 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { 409 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) 410 return i; 411 } 412 return -EINVAL; 413 } 414 415 static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai, 416 int clk_id, unsigned int freq, int dir) 417 { 418 struct snd_soc_codec *codec = codec_dai->codec; 419 struct wm8971_priv *wm8971 = codec->private_data; 420 421 switch (freq) { 422 case 11289600: 423 case 12000000: 424 case 12288000: 425 case 16934400: 426 case 18432000: 427 wm8971->sysclk = freq; 428 return 0; 429 } 430 return -EINVAL; 431 } 432 433 static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai, 434 unsigned int fmt) 435 { 436 struct snd_soc_codec *codec = codec_dai->codec; 437 u16 iface = 0; 438 439 /* set master/slave audio interface */ 440 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 441 case SND_SOC_DAIFMT_CBM_CFM: 442 iface = 0x0040; 443 break; 444 case SND_SOC_DAIFMT_CBS_CFS: 445 break; 446 default: 447 return -EINVAL; 448 } 449 450 /* interface format */ 451 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 452 case SND_SOC_DAIFMT_I2S: 453 iface |= 0x0002; 454 break; 455 case SND_SOC_DAIFMT_RIGHT_J: 456 break; 457 case SND_SOC_DAIFMT_LEFT_J: 458 iface |= 0x0001; 459 break; 460 case SND_SOC_DAIFMT_DSP_A: 461 iface |= 0x0003; 462 break; 463 case SND_SOC_DAIFMT_DSP_B: 464 iface |= 0x0013; 465 break; 466 default: 467 return -EINVAL; 468 } 469 470 /* clock inversion */ 471 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 472 case SND_SOC_DAIFMT_NB_NF: 473 break; 474 case SND_SOC_DAIFMT_IB_IF: 475 iface |= 0x0090; 476 break; 477 case SND_SOC_DAIFMT_IB_NF: 478 iface |= 0x0080; 479 break; 480 case SND_SOC_DAIFMT_NB_IF: 481 iface |= 0x0010; 482 break; 483 default: 484 return -EINVAL; 485 } 486 487 snd_soc_write(codec, WM8971_IFACE, iface); 488 return 0; 489 } 490 491 static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream, 492 struct snd_pcm_hw_params *params, 493 struct snd_soc_dai *dai) 494 { 495 struct snd_soc_pcm_runtime *rtd = substream->private_data; 496 struct snd_soc_device *socdev = rtd->socdev; 497 struct snd_soc_codec *codec = socdev->card->codec; 498 struct wm8971_priv *wm8971 = codec->private_data; 499 u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3; 500 u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0; 501 int coeff = get_coeff(wm8971->sysclk, params_rate(params)); 502 503 /* bit size */ 504 switch (params_format(params)) { 505 case SNDRV_PCM_FORMAT_S16_LE: 506 break; 507 case SNDRV_PCM_FORMAT_S20_3LE: 508 iface |= 0x0004; 509 break; 510 case SNDRV_PCM_FORMAT_S24_LE: 511 iface |= 0x0008; 512 break; 513 case SNDRV_PCM_FORMAT_S32_LE: 514 iface |= 0x000c; 515 break; 516 } 517 518 /* set iface & srate */ 519 snd_soc_write(codec, WM8971_IFACE, iface); 520 if (coeff >= 0) 521 snd_soc_write(codec, WM8971_SRATE, srate | 522 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb); 523 524 return 0; 525 } 526 527 static int wm8971_mute(struct snd_soc_dai *dai, int mute) 528 { 529 struct snd_soc_codec *codec = dai->codec; 530 u16 mute_reg = snd_soc_read(codec, WM8971_ADCDAC) & 0xfff7; 531 532 if (mute) 533 snd_soc_write(codec, WM8971_ADCDAC, mute_reg | 0x8); 534 else 535 snd_soc_write(codec, WM8971_ADCDAC, mute_reg); 536 return 0; 537 } 538 539 static int wm8971_set_bias_level(struct snd_soc_codec *codec, 540 enum snd_soc_bias_level level) 541 { 542 u16 pwr_reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; 543 544 switch (level) { 545 case SND_SOC_BIAS_ON: 546 /* set vmid to 50k and unmute dac */ 547 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x00c1); 548 break; 549 case SND_SOC_BIAS_PREPARE: 550 break; 551 case SND_SOC_BIAS_STANDBY: 552 /* mute dac and set vmid to 500k, enable VREF */ 553 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x0140); 554 break; 555 case SND_SOC_BIAS_OFF: 556 snd_soc_write(codec, WM8971_PWR1, 0x0001); 557 break; 558 } 559 codec->bias_level = level; 560 return 0; 561 } 562 563 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 564 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ 565 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) 566 567 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 568 SNDRV_PCM_FMTBIT_S24_LE) 569 570 static struct snd_soc_dai_ops wm8971_dai_ops = { 571 .hw_params = wm8971_pcm_hw_params, 572 .digital_mute = wm8971_mute, 573 .set_fmt = wm8971_set_dai_fmt, 574 .set_sysclk = wm8971_set_dai_sysclk, 575 }; 576 577 struct snd_soc_dai wm8971_dai = { 578 .name = "WM8971", 579 .playback = { 580 .stream_name = "Playback", 581 .channels_min = 1, 582 .channels_max = 2, 583 .rates = WM8971_RATES, 584 .formats = WM8971_FORMATS,}, 585 .capture = { 586 .stream_name = "Capture", 587 .channels_min = 1, 588 .channels_max = 2, 589 .rates = WM8971_RATES, 590 .formats = WM8971_FORMATS,}, 591 .ops = &wm8971_dai_ops, 592 }; 593 EXPORT_SYMBOL_GPL(wm8971_dai); 594 595 static void wm8971_work(struct work_struct *work) 596 { 597 struct snd_soc_codec *codec = 598 container_of(work, struct snd_soc_codec, delayed_work.work); 599 wm8971_set_bias_level(codec, codec->bias_level); 600 } 601 602 static int wm8971_suspend(struct platform_device *pdev, pm_message_t state) 603 { 604 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 605 struct snd_soc_codec *codec = socdev->card->codec; 606 607 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); 608 return 0; 609 } 610 611 static int wm8971_resume(struct platform_device *pdev) 612 { 613 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 614 struct snd_soc_codec *codec = socdev->card->codec; 615 int i; 616 u8 data[2]; 617 u16 *cache = codec->reg_cache; 618 u16 reg; 619 620 /* Sync reg_cache with the hardware */ 621 for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) { 622 if (i + 1 == WM8971_RESET) 623 continue; 624 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 625 data[1] = cache[i] & 0x00ff; 626 codec->hw_write(codec->control_data, data, 2); 627 } 628 629 wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 630 631 /* charge wm8971 caps */ 632 if (codec->suspend_bias_level == SND_SOC_BIAS_ON) { 633 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; 634 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0); 635 codec->bias_level = SND_SOC_BIAS_ON; 636 queue_delayed_work(wm8971_workq, &codec->delayed_work, 637 msecs_to_jiffies(1000)); 638 } 639 640 return 0; 641 } 642 643 static int wm8971_init(struct snd_soc_device *socdev, 644 enum snd_soc_control_type control) 645 { 646 struct snd_soc_codec *codec = socdev->card->codec; 647 int reg, ret = 0; 648 649 codec->name = "WM8971"; 650 codec->owner = THIS_MODULE; 651 codec->set_bias_level = wm8971_set_bias_level; 652 codec->dai = &wm8971_dai; 653 codec->reg_cache_size = ARRAY_SIZE(wm8971_reg); 654 codec->num_dai = 1; 655 codec->reg_cache = kmemdup(wm8971_reg, sizeof(wm8971_reg), GFP_KERNEL); 656 657 if (codec->reg_cache == NULL) 658 return -ENOMEM; 659 660 ret = snd_soc_codec_set_cache_io(codec, 7, 9, control); 661 if (ret < 0) { 662 printk(KERN_ERR "wm8971: failed to set cache I/O: %d\n", ret); 663 goto err; 664 } 665 666 wm8971_reset(codec); 667 668 /* register pcms */ 669 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 670 if (ret < 0) { 671 printk(KERN_ERR "wm8971: failed to create pcms\n"); 672 goto err; 673 } 674 675 /* charge output caps - set vmid to 5k for quick power up */ 676 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; 677 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0); 678 codec->bias_level = SND_SOC_BIAS_STANDBY; 679 queue_delayed_work(wm8971_workq, &codec->delayed_work, 680 msecs_to_jiffies(1000)); 681 682 /* set the update bits */ 683 reg = snd_soc_read(codec, WM8971_LDAC); 684 snd_soc_write(codec, WM8971_LDAC, reg | 0x0100); 685 reg = snd_soc_read(codec, WM8971_RDAC); 686 snd_soc_write(codec, WM8971_RDAC, reg | 0x0100); 687 688 reg = snd_soc_read(codec, WM8971_LOUT1V); 689 snd_soc_write(codec, WM8971_LOUT1V, reg | 0x0100); 690 reg = snd_soc_read(codec, WM8971_ROUT1V); 691 snd_soc_write(codec, WM8971_ROUT1V, reg | 0x0100); 692 693 reg = snd_soc_read(codec, WM8971_LOUT2V); 694 snd_soc_write(codec, WM8971_LOUT2V, reg | 0x0100); 695 reg = snd_soc_read(codec, WM8971_ROUT2V); 696 snd_soc_write(codec, WM8971_ROUT2V, reg | 0x0100); 697 698 reg = snd_soc_read(codec, WM8971_LINVOL); 699 snd_soc_write(codec, WM8971_LINVOL, reg | 0x0100); 700 reg = snd_soc_read(codec, WM8971_RINVOL); 701 snd_soc_write(codec, WM8971_RINVOL, reg | 0x0100); 702 703 snd_soc_add_controls(codec, wm8971_snd_controls, 704 ARRAY_SIZE(wm8971_snd_controls)); 705 wm8971_add_widgets(codec); 706 ret = snd_soc_init_card(socdev); 707 if (ret < 0) { 708 printk(KERN_ERR "wm8971: failed to register card\n"); 709 goto card_err; 710 } 711 return ret; 712 713 card_err: 714 snd_soc_free_pcms(socdev); 715 snd_soc_dapm_free(socdev); 716 err: 717 kfree(codec->reg_cache); 718 return ret; 719 } 720 721 /* If the i2c layer weren't so broken, we could pass this kind of data 722 around */ 723 static struct snd_soc_device *wm8971_socdev; 724 725 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) 726 727 static int wm8971_i2c_probe(struct i2c_client *i2c, 728 const struct i2c_device_id *id) 729 { 730 struct snd_soc_device *socdev = wm8971_socdev; 731 struct snd_soc_codec *codec = socdev->card->codec; 732 int ret; 733 734 i2c_set_clientdata(i2c, codec); 735 736 codec->control_data = i2c; 737 738 ret = wm8971_init(socdev, SND_SOC_I2C); 739 if (ret < 0) 740 pr_err("failed to initialise WM8971\n"); 741 742 return ret; 743 } 744 745 static int wm8971_i2c_remove(struct i2c_client *client) 746 { 747 struct snd_soc_codec *codec = i2c_get_clientdata(client); 748 kfree(codec->reg_cache); 749 return 0; 750 } 751 752 static const struct i2c_device_id wm8971_i2c_id[] = { 753 { "wm8971", 0 }, 754 { } 755 }; 756 MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id); 757 758 static struct i2c_driver wm8971_i2c_driver = { 759 .driver = { 760 .name = "WM8971 I2C Codec", 761 .owner = THIS_MODULE, 762 }, 763 .probe = wm8971_i2c_probe, 764 .remove = wm8971_i2c_remove, 765 .id_table = wm8971_i2c_id, 766 }; 767 768 static int wm8971_add_i2c_device(struct platform_device *pdev, 769 const struct wm8971_setup_data *setup) 770 { 771 struct i2c_board_info info; 772 struct i2c_adapter *adapter; 773 struct i2c_client *client; 774 int ret; 775 776 ret = i2c_add_driver(&wm8971_i2c_driver); 777 if (ret != 0) { 778 dev_err(&pdev->dev, "can't add i2c driver\n"); 779 return ret; 780 } 781 782 memset(&info, 0, sizeof(struct i2c_board_info)); 783 info.addr = setup->i2c_address; 784 strlcpy(info.type, "wm8971", I2C_NAME_SIZE); 785 786 adapter = i2c_get_adapter(setup->i2c_bus); 787 if (!adapter) { 788 dev_err(&pdev->dev, "can't get i2c adapter %d\n", 789 setup->i2c_bus); 790 goto err_driver; 791 } 792 793 client = i2c_new_device(adapter, &info); 794 i2c_put_adapter(adapter); 795 if (!client) { 796 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", 797 (unsigned int)info.addr); 798 goto err_driver; 799 } 800 801 return 0; 802 803 err_driver: 804 i2c_del_driver(&wm8971_i2c_driver); 805 return -ENODEV; 806 } 807 808 #endif 809 810 static int wm8971_probe(struct platform_device *pdev) 811 { 812 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 813 struct wm8971_setup_data *setup; 814 struct snd_soc_codec *codec; 815 struct wm8971_priv *wm8971; 816 int ret = 0; 817 818 pr_info("WM8971 Audio Codec %s", WM8971_VERSION); 819 820 setup = socdev->codec_data; 821 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 822 if (codec == NULL) 823 return -ENOMEM; 824 825 wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL); 826 if (wm8971 == NULL) { 827 kfree(codec); 828 return -ENOMEM; 829 } 830 831 codec->private_data = wm8971; 832 socdev->card->codec = codec; 833 mutex_init(&codec->mutex); 834 INIT_LIST_HEAD(&codec->dapm_widgets); 835 INIT_LIST_HEAD(&codec->dapm_paths); 836 wm8971_socdev = socdev; 837 838 INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work); 839 wm8971_workq = create_workqueue("wm8971"); 840 if (wm8971_workq == NULL) { 841 kfree(codec->private_data); 842 kfree(codec); 843 return -ENOMEM; 844 } 845 846 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) 847 if (setup->i2c_address) { 848 ret = wm8971_add_i2c_device(pdev, setup); 849 } 850 #endif 851 /* Add other interfaces here */ 852 853 if (ret != 0) { 854 destroy_workqueue(wm8971_workq); 855 kfree(codec->private_data); 856 kfree(codec); 857 } 858 859 return ret; 860 } 861 862 /* power down chip */ 863 static int wm8971_remove(struct platform_device *pdev) 864 { 865 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 866 struct snd_soc_codec *codec = socdev->card->codec; 867 868 if (codec->control_data) 869 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); 870 if (wm8971_workq) 871 destroy_workqueue(wm8971_workq); 872 snd_soc_free_pcms(socdev); 873 snd_soc_dapm_free(socdev); 874 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) 875 i2c_unregister_device(codec->control_data); 876 i2c_del_driver(&wm8971_i2c_driver); 877 #endif 878 kfree(codec->private_data); 879 kfree(codec); 880 881 return 0; 882 } 883 884 struct snd_soc_codec_device soc_codec_dev_wm8971 = { 885 .probe = wm8971_probe, 886 .remove = wm8971_remove, 887 .suspend = wm8971_suspend, 888 .resume = wm8971_resume, 889 }; 890 891 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8971); 892 893 static int __init wm8971_modinit(void) 894 { 895 return snd_soc_register_dai(&wm8971_dai); 896 } 897 module_init(wm8971_modinit); 898 899 static void __exit wm8971_exit(void) 900 { 901 snd_soc_unregister_dai(&wm8971_dai); 902 } 903 module_exit(wm8971_exit); 904 905 MODULE_DESCRIPTION("ASoC WM8971 driver"); 906 MODULE_AUTHOR("Lab126"); 907 MODULE_LICENSE("GPL"); 908