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/initval.h> 29 30 #include "wm8971.h" 31 32 #define WM8971_REG_COUNT 43 33 34 static struct workqueue_struct *wm8971_workq = NULL; 35 36 /* codec private data */ 37 struct wm8971_priv { 38 enum snd_soc_control_type control_type; 39 unsigned int sysclk; 40 }; 41 42 /* 43 * wm8971 register cache 44 * We can't read the WM8971 register space when we 45 * are using 2 wire for device control, so we cache them instead. 46 */ 47 static const u16 wm8971_reg[] = { 48 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */ 49 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */ 50 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */ 51 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */ 52 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */ 53 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */ 54 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */ 55 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */ 56 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */ 57 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */ 58 0x0079, 0x0079, 0x0079, /* 40 */ 59 }; 60 61 #define wm8971_reset(c) snd_soc_write(c, WM8971_RESET, 0) 62 63 /* WM8971 Controls */ 64 static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" }; 65 static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz", 66 "200Hz @ 48kHz" }; 67 static const char *wm8971_treble[] = { "8kHz", "4kHz" }; 68 static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" }; 69 static const char *wm8971_ng_type[] = { "Constant PGA Gain", 70 "Mute ADC Output" }; 71 static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; 72 static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)", 73 "Mono (Right)", "Digital Mono"}; 74 static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" }; 75 static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA", 76 "Differential"}; 77 static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA", 78 "Differential"}; 79 static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"}; 80 static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"}; 81 static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert", 82 "L + R Invert"}; 83 84 static const struct soc_enum wm8971_enum[] = { 85 SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass), /* 0 */ 86 SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter), 87 SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble), 88 SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func), 89 SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type), /* 4 */ 90 SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp), 91 SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux), 92 SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase), 93 SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */ 94 SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux), 95 SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel), 96 SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel), 97 SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol), /* 12 */ 98 SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux), 99 }; 100 101 static const struct snd_kcontrol_new wm8971_snd_controls[] = { 102 SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0), 103 SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL, 104 6, 1, 0), 105 SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1), 106 107 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V, 108 WM8971_ROUT1V, 7, 1, 0), 109 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V, 110 WM8971_ROUT2V, 7, 1, 0), 111 SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0), 112 113 SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0), 114 115 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1, 116 WM8971_LOUTM2, 4, 7, 1), 117 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1, 118 WM8971_ROUTM2, 4, 7, 1), 119 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1, 120 WM8971_MOUTM2, 4, 7, 1), 121 122 SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V, 123 WM8971_ROUT1V, 0, 127, 0), 124 SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V, 125 WM8971_ROUT2V, 0, 127, 0), 126 127 SOC_ENUM("Bass Boost", wm8971_enum[0]), 128 SOC_ENUM("Bass Filter", wm8971_enum[1]), 129 SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1), 130 131 SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0), 132 SOC_ENUM("Treble Cut-off", wm8971_enum[2]), 133 134 SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1), 135 136 SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0), 137 SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0), 138 139 SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0), 140 SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0), 141 SOC_ENUM("ALC Capture Function", wm8971_enum[3]), 142 SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0), 143 SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0), 144 SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0), 145 SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0), 146 SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0), 147 SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]), 148 SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0), 149 150 SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0), 151 SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0), 152 153 SOC_ENUM("Playback De-emphasis", wm8971_enum[5]), 154 SOC_ENUM("Playback Function", wm8971_enum[6]), 155 SOC_ENUM("Playback Phase", wm8971_enum[7]), 156 157 SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0), 158 }; 159 160 /* 161 * DAPM Controls 162 */ 163 164 /* Left Mixer */ 165 static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = { 166 SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0), 167 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0), 168 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0), 169 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0), 170 }; 171 172 /* Right Mixer */ 173 static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = { 174 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0), 175 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0), 176 SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0), 177 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0), 178 }; 179 180 /* Mono Mixer */ 181 static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = { 182 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0), 183 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0), 184 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0), 185 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0), 186 }; 187 188 /* Left Line Mux */ 189 static const struct snd_kcontrol_new wm8971_left_line_controls = 190 SOC_DAPM_ENUM("Route", wm8971_enum[8]); 191 192 /* Right Line Mux */ 193 static const struct snd_kcontrol_new wm8971_right_line_controls = 194 SOC_DAPM_ENUM("Route", wm8971_enum[9]); 195 196 /* Left PGA Mux */ 197 static const struct snd_kcontrol_new wm8971_left_pga_controls = 198 SOC_DAPM_ENUM("Route", wm8971_enum[10]); 199 200 /* Right PGA Mux */ 201 static const struct snd_kcontrol_new wm8971_right_pga_controls = 202 SOC_DAPM_ENUM("Route", wm8971_enum[11]); 203 204 /* Mono ADC Mux */ 205 static const struct snd_kcontrol_new wm8971_monomux_controls = 206 SOC_DAPM_ENUM("Route", wm8971_enum[13]); 207 208 static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = { 209 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0, 210 &wm8971_left_mixer_controls[0], 211 ARRAY_SIZE(wm8971_left_mixer_controls)), 212 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0, 213 &wm8971_right_mixer_controls[0], 214 ARRAY_SIZE(wm8971_right_mixer_controls)), 215 SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0, 216 &wm8971_mono_mixer_controls[0], 217 ARRAY_SIZE(wm8971_mono_mixer_controls)), 218 219 SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0), 220 SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0), 221 SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0), 222 SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0), 223 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0), 224 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0), 225 SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0), 226 227 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8971_PWR1, 1, 0), 228 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0), 229 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0), 230 231 SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0, 232 &wm8971_left_pga_controls), 233 SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0, 234 &wm8971_right_pga_controls), 235 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0, 236 &wm8971_left_line_controls), 237 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0, 238 &wm8971_right_line_controls), 239 240 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0, 241 &wm8971_monomux_controls), 242 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0, 243 &wm8971_monomux_controls), 244 245 SND_SOC_DAPM_OUTPUT("LOUT1"), 246 SND_SOC_DAPM_OUTPUT("ROUT1"), 247 SND_SOC_DAPM_OUTPUT("LOUT2"), 248 SND_SOC_DAPM_OUTPUT("ROUT2"), 249 SND_SOC_DAPM_OUTPUT("MONO"), 250 251 SND_SOC_DAPM_INPUT("LINPUT1"), 252 SND_SOC_DAPM_INPUT("RINPUT1"), 253 SND_SOC_DAPM_INPUT("MIC"), 254 }; 255 256 static const struct snd_soc_dapm_route audio_map[] = { 257 /* left mixer */ 258 {"Left Mixer", "Playback Switch", "Left DAC"}, 259 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"}, 260 {"Left Mixer", "Right Playback Switch", "Right DAC"}, 261 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"}, 262 263 /* right mixer */ 264 {"Right Mixer", "Left Playback Switch", "Left DAC"}, 265 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"}, 266 {"Right Mixer", "Playback Switch", "Right DAC"}, 267 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"}, 268 269 /* left out 1 */ 270 {"Left Out 1", NULL, "Left Mixer"}, 271 {"LOUT1", NULL, "Left Out 1"}, 272 273 /* left out 2 */ 274 {"Left Out 2", NULL, "Left Mixer"}, 275 {"LOUT2", NULL, "Left Out 2"}, 276 277 /* right out 1 */ 278 {"Right Out 1", NULL, "Right Mixer"}, 279 {"ROUT1", NULL, "Right Out 1"}, 280 281 /* right out 2 */ 282 {"Right Out 2", NULL, "Right Mixer"}, 283 {"ROUT2", NULL, "Right Out 2"}, 284 285 /* mono mixer */ 286 {"Mono Mixer", "Left Playback Switch", "Left DAC"}, 287 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"}, 288 {"Mono Mixer", "Right Playback Switch", "Right DAC"}, 289 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"}, 290 291 /* mono out */ 292 {"Mono Out", NULL, "Mono Mixer"}, 293 {"MONO1", NULL, "Mono Out"}, 294 295 /* Left Line Mux */ 296 {"Left Line Mux", "Line", "LINPUT1"}, 297 {"Left Line Mux", "PGA", "Left PGA Mux"}, 298 {"Left Line Mux", "Differential", "Differential Mux"}, 299 300 /* Right Line Mux */ 301 {"Right Line Mux", "Line", "RINPUT1"}, 302 {"Right Line Mux", "Mic", "MIC"}, 303 {"Right Line Mux", "PGA", "Right PGA Mux"}, 304 {"Right Line Mux", "Differential", "Differential Mux"}, 305 306 /* Left PGA Mux */ 307 {"Left PGA Mux", "Line", "LINPUT1"}, 308 {"Left PGA Mux", "Differential", "Differential Mux"}, 309 310 /* Right PGA Mux */ 311 {"Right PGA Mux", "Line", "RINPUT1"}, 312 {"Right PGA Mux", "Differential", "Differential Mux"}, 313 314 /* Differential Mux */ 315 {"Differential Mux", "Line", "LINPUT1"}, 316 {"Differential Mux", "Line", "RINPUT1"}, 317 318 /* Left ADC Mux */ 319 {"Left ADC Mux", "Stereo", "Left PGA Mux"}, 320 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"}, 321 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"}, 322 323 /* Right ADC Mux */ 324 {"Right ADC Mux", "Stereo", "Right PGA Mux"}, 325 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"}, 326 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"}, 327 328 /* ADC */ 329 {"Left ADC", NULL, "Left ADC Mux"}, 330 {"Right ADC", NULL, "Right ADC Mux"}, 331 }; 332 333 static int wm8971_add_widgets(struct snd_soc_codec *codec) 334 { 335 struct snd_soc_dapm_context *dapm = &codec->dapm; 336 337 snd_soc_dapm_new_controls(dapm, wm8971_dapm_widgets, 338 ARRAY_SIZE(wm8971_dapm_widgets)); 339 snd_soc_dapm_add_routes(dapm, 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 = snd_soc_codec_get_drvdata(codec); 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_codec *codec = rtd->codec; 495 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec); 496 u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3; 497 u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0; 498 int coeff = get_coeff(wm8971->sysclk, params_rate(params)); 499 500 /* bit size */ 501 switch (params_format(params)) { 502 case SNDRV_PCM_FORMAT_S16_LE: 503 break; 504 case SNDRV_PCM_FORMAT_S20_3LE: 505 iface |= 0x0004; 506 break; 507 case SNDRV_PCM_FORMAT_S24_LE: 508 iface |= 0x0008; 509 break; 510 case SNDRV_PCM_FORMAT_S32_LE: 511 iface |= 0x000c; 512 break; 513 } 514 515 /* set iface & srate */ 516 snd_soc_write(codec, WM8971_IFACE, iface); 517 if (coeff >= 0) 518 snd_soc_write(codec, WM8971_SRATE, srate | 519 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb); 520 521 return 0; 522 } 523 524 static int wm8971_mute(struct snd_soc_dai *dai, int mute) 525 { 526 struct snd_soc_codec *codec = dai->codec; 527 u16 mute_reg = snd_soc_read(codec, WM8971_ADCDAC) & 0xfff7; 528 529 if (mute) 530 snd_soc_write(codec, WM8971_ADCDAC, mute_reg | 0x8); 531 else 532 snd_soc_write(codec, WM8971_ADCDAC, mute_reg); 533 return 0; 534 } 535 536 static int wm8971_set_bias_level(struct snd_soc_codec *codec, 537 enum snd_soc_bias_level level) 538 { 539 u16 pwr_reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; 540 541 switch (level) { 542 case SND_SOC_BIAS_ON: 543 /* set vmid to 50k and unmute dac */ 544 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x00c1); 545 break; 546 case SND_SOC_BIAS_PREPARE: 547 break; 548 case SND_SOC_BIAS_STANDBY: 549 /* mute dac and set vmid to 500k, enable VREF */ 550 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x0140); 551 break; 552 case SND_SOC_BIAS_OFF: 553 snd_soc_write(codec, WM8971_PWR1, 0x0001); 554 break; 555 } 556 codec->dapm.bias_level = level; 557 return 0; 558 } 559 560 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 561 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ 562 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) 563 564 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 565 SNDRV_PCM_FMTBIT_S24_LE) 566 567 static struct snd_soc_dai_ops wm8971_dai_ops = { 568 .hw_params = wm8971_pcm_hw_params, 569 .digital_mute = wm8971_mute, 570 .set_fmt = wm8971_set_dai_fmt, 571 .set_sysclk = wm8971_set_dai_sysclk, 572 }; 573 574 static struct snd_soc_dai_driver wm8971_dai = { 575 .name = "wm8971-hifi", 576 .playback = { 577 .stream_name = "Playback", 578 .channels_min = 1, 579 .channels_max = 2, 580 .rates = WM8971_RATES, 581 .formats = WM8971_FORMATS,}, 582 .capture = { 583 .stream_name = "Capture", 584 .channels_min = 1, 585 .channels_max = 2, 586 .rates = WM8971_RATES, 587 .formats = WM8971_FORMATS,}, 588 .ops = &wm8971_dai_ops, 589 }; 590 591 static void wm8971_work(struct work_struct *work) 592 { 593 struct snd_soc_dapm_context *dapm = 594 container_of(work, struct snd_soc_dapm_context, 595 delayed_work.work); 596 struct snd_soc_codec *codec = dapm->codec; 597 wm8971_set_bias_level(codec, codec->dapm.bias_level); 598 } 599 600 static int wm8971_suspend(struct snd_soc_codec *codec, pm_message_t state) 601 { 602 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); 603 return 0; 604 } 605 606 static int wm8971_resume(struct snd_soc_codec *codec) 607 { 608 int i; 609 u8 data[2]; 610 u16 *cache = codec->reg_cache; 611 u16 reg; 612 613 /* Sync reg_cache with the hardware */ 614 for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) { 615 if (i + 1 == WM8971_RESET) 616 continue; 617 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 618 data[1] = cache[i] & 0x00ff; 619 codec->hw_write(codec->control_data, data, 2); 620 } 621 622 wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 623 624 /* charge wm8971 caps */ 625 if (codec->dapm.suspend_bias_level == SND_SOC_BIAS_ON) { 626 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; 627 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0); 628 codec->dapm.bias_level = SND_SOC_BIAS_ON; 629 queue_delayed_work(wm8971_workq, &codec->dapm.delayed_work, 630 msecs_to_jiffies(1000)); 631 } 632 633 return 0; 634 } 635 636 static int wm8971_probe(struct snd_soc_codec *codec) 637 { 638 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec); 639 int ret = 0; 640 u16 reg; 641 642 ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8971->control_type); 643 if (ret < 0) { 644 printk(KERN_ERR "wm8971: failed to set cache I/O: %d\n", ret); 645 return ret; 646 } 647 648 INIT_DELAYED_WORK(&codec->dapm.delayed_work, wm8971_work); 649 wm8971_workq = create_workqueue("wm8971"); 650 if (wm8971_workq == NULL) 651 return -ENOMEM; 652 653 wm8971_reset(codec); 654 655 /* charge output caps - set vmid to 5k for quick power up */ 656 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; 657 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0); 658 codec->dapm.bias_level = SND_SOC_BIAS_STANDBY; 659 queue_delayed_work(wm8971_workq, &codec->dapm.delayed_work, 660 msecs_to_jiffies(1000)); 661 662 /* set the update bits */ 663 reg = snd_soc_read(codec, WM8971_LDAC); 664 snd_soc_write(codec, WM8971_LDAC, reg | 0x0100); 665 reg = snd_soc_read(codec, WM8971_RDAC); 666 snd_soc_write(codec, WM8971_RDAC, reg | 0x0100); 667 668 reg = snd_soc_read(codec, WM8971_LOUT1V); 669 snd_soc_write(codec, WM8971_LOUT1V, reg | 0x0100); 670 reg = snd_soc_read(codec, WM8971_ROUT1V); 671 snd_soc_write(codec, WM8971_ROUT1V, reg | 0x0100); 672 673 reg = snd_soc_read(codec, WM8971_LOUT2V); 674 snd_soc_write(codec, WM8971_LOUT2V, reg | 0x0100); 675 reg = snd_soc_read(codec, WM8971_ROUT2V); 676 snd_soc_write(codec, WM8971_ROUT2V, reg | 0x0100); 677 678 reg = snd_soc_read(codec, WM8971_LINVOL); 679 snd_soc_write(codec, WM8971_LINVOL, reg | 0x0100); 680 reg = snd_soc_read(codec, WM8971_RINVOL); 681 snd_soc_write(codec, WM8971_RINVOL, reg | 0x0100); 682 683 snd_soc_add_controls(codec, wm8971_snd_controls, 684 ARRAY_SIZE(wm8971_snd_controls)); 685 wm8971_add_widgets(codec); 686 687 return ret; 688 } 689 690 691 /* power down chip */ 692 static int wm8971_remove(struct snd_soc_codec *codec) 693 { 694 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); 695 696 if (wm8971_workq) 697 destroy_workqueue(wm8971_workq); 698 return 0; 699 } 700 701 static struct snd_soc_codec_driver soc_codec_dev_wm8971 = { 702 .probe = wm8971_probe, 703 .remove = wm8971_remove, 704 .suspend = wm8971_suspend, 705 .resume = wm8971_resume, 706 .set_bias_level = wm8971_set_bias_level, 707 .reg_cache_size = ARRAY_SIZE(wm8971_reg), 708 .reg_word_size = sizeof(u16), 709 .reg_cache_default = wm8971_reg, 710 }; 711 712 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 713 static __devinit int wm8971_i2c_probe(struct i2c_client *i2c, 714 const struct i2c_device_id *id) 715 { 716 struct wm8971_priv *wm8971; 717 int ret; 718 719 wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL); 720 if (wm8971 == NULL) 721 return -ENOMEM; 722 723 wm8971->control_type = SND_SOC_I2C; 724 i2c_set_clientdata(i2c, wm8971); 725 726 ret = snd_soc_register_codec(&i2c->dev, 727 &soc_codec_dev_wm8971, &wm8971_dai, 1); 728 if (ret < 0) 729 kfree(wm8971); 730 return ret; 731 } 732 733 static __devexit int wm8971_i2c_remove(struct i2c_client *client) 734 { 735 snd_soc_unregister_codec(&client->dev); 736 kfree(i2c_get_clientdata(client)); 737 return 0; 738 } 739 740 static const struct i2c_device_id wm8971_i2c_id[] = { 741 { "wm8971", 0 }, 742 { } 743 }; 744 MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id); 745 746 static struct i2c_driver wm8971_i2c_driver = { 747 .driver = { 748 .name = "wm8971-codec", 749 .owner = THIS_MODULE, 750 }, 751 .probe = wm8971_i2c_probe, 752 .remove = __devexit_p(wm8971_i2c_remove), 753 .id_table = wm8971_i2c_id, 754 }; 755 #endif 756 757 static int __init wm8971_modinit(void) 758 { 759 int ret = 0; 760 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 761 ret = i2c_add_driver(&wm8971_i2c_driver); 762 if (ret != 0) { 763 printk(KERN_ERR "Failed to register WM8971 I2C driver: %d\n", 764 ret); 765 } 766 #endif 767 return ret; 768 } 769 module_init(wm8971_modinit); 770 771 static void __exit wm8971_exit(void) 772 { 773 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 774 i2c_del_driver(&wm8971_i2c_driver); 775 #endif 776 } 777 module_exit(wm8971_exit); 778 779 MODULE_DESCRIPTION("ASoC WM8971 driver"); 780 MODULE_AUTHOR("Lab126"); 781 MODULE_LICENSE("GPL"); 782