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 static inline unsigned int wm8971_read_reg_cache(struct snd_soc_codec *codec, 63 unsigned int reg) 64 { 65 u16 *cache = codec->reg_cache; 66 if (reg < WM8971_REG_COUNT) 67 return cache[reg]; 68 69 return -1; 70 } 71 72 static inline void wm8971_write_reg_cache(struct snd_soc_codec *codec, 73 unsigned int reg, unsigned int value) 74 { 75 u16 *cache = codec->reg_cache; 76 if (reg < WM8971_REG_COUNT) 77 cache[reg] = value; 78 } 79 80 static int wm8971_write(struct snd_soc_codec *codec, unsigned int reg, 81 unsigned int value) 82 { 83 u8 data[2]; 84 85 /* data is 86 * D15..D9 WM8753 register offset 87 * D8...D0 register data 88 */ 89 data[0] = (reg << 1) | ((value >> 8) & 0x0001); 90 data[1] = value & 0x00ff; 91 92 wm8971_write_reg_cache (codec, reg, value); 93 if (codec->hw_write(codec->control_data, data, 2) == 2) 94 return 0; 95 else 96 return -EIO; 97 } 98 99 #define wm8971_reset(c) wm8971_write(c, WM8971_RESET, 0) 100 101 /* WM8971 Controls */ 102 static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" }; 103 static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz", 104 "200Hz @ 48kHz" }; 105 static const char *wm8971_treble[] = { "8kHz", "4kHz" }; 106 static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" }; 107 static const char *wm8971_ng_type[] = { "Constant PGA Gain", 108 "Mute ADC Output" }; 109 static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; 110 static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)", 111 "Mono (Right)", "Digital Mono"}; 112 static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" }; 113 static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA", 114 "Differential"}; 115 static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA", 116 "Differential"}; 117 static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"}; 118 static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"}; 119 static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert", 120 "L + R Invert"}; 121 122 static const struct soc_enum wm8971_enum[] = { 123 SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass), /* 0 */ 124 SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter), 125 SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble), 126 SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func), 127 SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type), /* 4 */ 128 SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp), 129 SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux), 130 SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase), 131 SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */ 132 SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux), 133 SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel), 134 SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel), 135 SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol), /* 12 */ 136 SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux), 137 }; 138 139 static const struct snd_kcontrol_new wm8971_snd_controls[] = { 140 SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0), 141 SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL, 142 6, 1, 0), 143 SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1), 144 145 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V, 146 WM8971_ROUT1V, 7, 1, 0), 147 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V, 148 WM8971_ROUT2V, 7, 1, 0), 149 SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0), 150 151 SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0), 152 153 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1, 154 WM8971_LOUTM2, 4, 7, 1), 155 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1, 156 WM8971_ROUTM2, 4, 7, 1), 157 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1, 158 WM8971_MOUTM2, 4, 7, 1), 159 160 SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V, 161 WM8971_ROUT1V, 0, 127, 0), 162 SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V, 163 WM8971_ROUT2V, 0, 127, 0), 164 165 SOC_ENUM("Bass Boost", wm8971_enum[0]), 166 SOC_ENUM("Bass Filter", wm8971_enum[1]), 167 SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1), 168 169 SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0), 170 SOC_ENUM("Treble Cut-off", wm8971_enum[2]), 171 172 SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1), 173 174 SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0), 175 SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0), 176 177 SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0), 178 SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0), 179 SOC_ENUM("ALC Capture Function", wm8971_enum[3]), 180 SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0), 181 SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0), 182 SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0), 183 SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0), 184 SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0), 185 SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]), 186 SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0), 187 188 SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0), 189 SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0), 190 191 SOC_ENUM("Playback De-emphasis", wm8971_enum[5]), 192 SOC_ENUM("Playback Function", wm8971_enum[6]), 193 SOC_ENUM("Playback Phase", wm8971_enum[7]), 194 195 SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0), 196 }; 197 198 /* 199 * DAPM Controls 200 */ 201 202 /* Left Mixer */ 203 static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = { 204 SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0), 205 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0), 206 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0), 207 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0), 208 }; 209 210 /* Right Mixer */ 211 static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = { 212 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0), 213 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0), 214 SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0), 215 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0), 216 }; 217 218 /* Mono Mixer */ 219 static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = { 220 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0), 221 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0), 222 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0), 223 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0), 224 }; 225 226 /* Left Line Mux */ 227 static const struct snd_kcontrol_new wm8971_left_line_controls = 228 SOC_DAPM_ENUM("Route", wm8971_enum[8]); 229 230 /* Right Line Mux */ 231 static const struct snd_kcontrol_new wm8971_right_line_controls = 232 SOC_DAPM_ENUM("Route", wm8971_enum[9]); 233 234 /* Left PGA Mux */ 235 static const struct snd_kcontrol_new wm8971_left_pga_controls = 236 SOC_DAPM_ENUM("Route", wm8971_enum[10]); 237 238 /* Right PGA Mux */ 239 static const struct snd_kcontrol_new wm8971_right_pga_controls = 240 SOC_DAPM_ENUM("Route", wm8971_enum[11]); 241 242 /* Mono ADC Mux */ 243 static const struct snd_kcontrol_new wm8971_monomux_controls = 244 SOC_DAPM_ENUM("Route", wm8971_enum[13]); 245 246 static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = { 247 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0, 248 &wm8971_left_mixer_controls[0], 249 ARRAY_SIZE(wm8971_left_mixer_controls)), 250 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0, 251 &wm8971_right_mixer_controls[0], 252 ARRAY_SIZE(wm8971_right_mixer_controls)), 253 SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0, 254 &wm8971_mono_mixer_controls[0], 255 ARRAY_SIZE(wm8971_mono_mixer_controls)), 256 257 SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0), 258 SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0), 259 SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0), 260 SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0), 261 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0), 262 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0), 263 SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0), 264 265 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8971_PWR1, 1, 0), 266 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0), 267 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0), 268 269 SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0, 270 &wm8971_left_pga_controls), 271 SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0, 272 &wm8971_right_pga_controls), 273 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0, 274 &wm8971_left_line_controls), 275 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0, 276 &wm8971_right_line_controls), 277 278 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0, 279 &wm8971_monomux_controls), 280 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0, 281 &wm8971_monomux_controls), 282 283 SND_SOC_DAPM_OUTPUT("LOUT1"), 284 SND_SOC_DAPM_OUTPUT("ROUT1"), 285 SND_SOC_DAPM_OUTPUT("LOUT2"), 286 SND_SOC_DAPM_OUTPUT("ROUT2"), 287 SND_SOC_DAPM_OUTPUT("MONO"), 288 289 SND_SOC_DAPM_INPUT("LINPUT1"), 290 SND_SOC_DAPM_INPUT("RINPUT1"), 291 SND_SOC_DAPM_INPUT("MIC"), 292 }; 293 294 static const struct snd_soc_dapm_route audio_map[] = { 295 /* left mixer */ 296 {"Left Mixer", "Playback Switch", "Left DAC"}, 297 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"}, 298 {"Left Mixer", "Right Playback Switch", "Right DAC"}, 299 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"}, 300 301 /* right mixer */ 302 {"Right Mixer", "Left Playback Switch", "Left DAC"}, 303 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"}, 304 {"Right Mixer", "Playback Switch", "Right DAC"}, 305 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"}, 306 307 /* left out 1 */ 308 {"Left Out 1", NULL, "Left Mixer"}, 309 {"LOUT1", NULL, "Left Out 1"}, 310 311 /* left out 2 */ 312 {"Left Out 2", NULL, "Left Mixer"}, 313 {"LOUT2", NULL, "Left Out 2"}, 314 315 /* right out 1 */ 316 {"Right Out 1", NULL, "Right Mixer"}, 317 {"ROUT1", NULL, "Right Out 1"}, 318 319 /* right out 2 */ 320 {"Right Out 2", NULL, "Right Mixer"}, 321 {"ROUT2", NULL, "Right Out 2"}, 322 323 /* mono mixer */ 324 {"Mono Mixer", "Left Playback Switch", "Left DAC"}, 325 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"}, 326 {"Mono Mixer", "Right Playback Switch", "Right DAC"}, 327 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"}, 328 329 /* mono out */ 330 {"Mono Out", NULL, "Mono Mixer"}, 331 {"MONO1", NULL, "Mono Out"}, 332 333 /* Left Line Mux */ 334 {"Left Line Mux", "Line", "LINPUT1"}, 335 {"Left Line Mux", "PGA", "Left PGA Mux"}, 336 {"Left Line Mux", "Differential", "Differential Mux"}, 337 338 /* Right Line Mux */ 339 {"Right Line Mux", "Line", "RINPUT1"}, 340 {"Right Line Mux", "Mic", "MIC"}, 341 {"Right Line Mux", "PGA", "Right PGA Mux"}, 342 {"Right Line Mux", "Differential", "Differential Mux"}, 343 344 /* Left PGA Mux */ 345 {"Left PGA Mux", "Line", "LINPUT1"}, 346 {"Left PGA Mux", "Differential", "Differential Mux"}, 347 348 /* Right PGA Mux */ 349 {"Right PGA Mux", "Line", "RINPUT1"}, 350 {"Right PGA Mux", "Differential", "Differential Mux"}, 351 352 /* Differential Mux */ 353 {"Differential Mux", "Line", "LINPUT1"}, 354 {"Differential Mux", "Line", "RINPUT1"}, 355 356 /* Left ADC Mux */ 357 {"Left ADC Mux", "Stereo", "Left PGA Mux"}, 358 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"}, 359 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"}, 360 361 /* Right ADC Mux */ 362 {"Right ADC Mux", "Stereo", "Right PGA Mux"}, 363 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"}, 364 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"}, 365 366 /* ADC */ 367 {"Left ADC", NULL, "Left ADC Mux"}, 368 {"Right ADC", NULL, "Right ADC Mux"}, 369 }; 370 371 static int wm8971_add_widgets(struct snd_soc_codec *codec) 372 { 373 snd_soc_dapm_new_controls(codec, wm8971_dapm_widgets, 374 ARRAY_SIZE(wm8971_dapm_widgets)); 375 376 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 377 378 snd_soc_dapm_new_widgets(codec); 379 380 return 0; 381 } 382 383 struct _coeff_div { 384 u32 mclk; 385 u32 rate; 386 u16 fs; 387 u8 sr:5; 388 u8 usb:1; 389 }; 390 391 /* codec hifi mclk clock divider coefficients */ 392 static const struct _coeff_div coeff_div[] = { 393 /* 8k */ 394 {12288000, 8000, 1536, 0x6, 0x0}, 395 {11289600, 8000, 1408, 0x16, 0x0}, 396 {18432000, 8000, 2304, 0x7, 0x0}, 397 {16934400, 8000, 2112, 0x17, 0x0}, 398 {12000000, 8000, 1500, 0x6, 0x1}, 399 400 /* 11.025k */ 401 {11289600, 11025, 1024, 0x18, 0x0}, 402 {16934400, 11025, 1536, 0x19, 0x0}, 403 {12000000, 11025, 1088, 0x19, 0x1}, 404 405 /* 16k */ 406 {12288000, 16000, 768, 0xa, 0x0}, 407 {18432000, 16000, 1152, 0xb, 0x0}, 408 {12000000, 16000, 750, 0xa, 0x1}, 409 410 /* 22.05k */ 411 {11289600, 22050, 512, 0x1a, 0x0}, 412 {16934400, 22050, 768, 0x1b, 0x0}, 413 {12000000, 22050, 544, 0x1b, 0x1}, 414 415 /* 32k */ 416 {12288000, 32000, 384, 0xc, 0x0}, 417 {18432000, 32000, 576, 0xd, 0x0}, 418 {12000000, 32000, 375, 0xa, 0x1}, 419 420 /* 44.1k */ 421 {11289600, 44100, 256, 0x10, 0x0}, 422 {16934400, 44100, 384, 0x11, 0x0}, 423 {12000000, 44100, 272, 0x11, 0x1}, 424 425 /* 48k */ 426 {12288000, 48000, 256, 0x0, 0x0}, 427 {18432000, 48000, 384, 0x1, 0x0}, 428 {12000000, 48000, 250, 0x0, 0x1}, 429 430 /* 88.2k */ 431 {11289600, 88200, 128, 0x1e, 0x0}, 432 {16934400, 88200, 192, 0x1f, 0x0}, 433 {12000000, 88200, 136, 0x1f, 0x1}, 434 435 /* 96k */ 436 {12288000, 96000, 128, 0xe, 0x0}, 437 {18432000, 96000, 192, 0xf, 0x0}, 438 {12000000, 96000, 125, 0xe, 0x1}, 439 }; 440 441 static int get_coeff(int mclk, int rate) 442 { 443 int i; 444 445 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { 446 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) 447 return i; 448 } 449 return -EINVAL; 450 } 451 452 static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai, 453 int clk_id, unsigned int freq, int dir) 454 { 455 struct snd_soc_codec *codec = codec_dai->codec; 456 struct wm8971_priv *wm8971 = codec->private_data; 457 458 switch (freq) { 459 case 11289600: 460 case 12000000: 461 case 12288000: 462 case 16934400: 463 case 18432000: 464 wm8971->sysclk = freq; 465 return 0; 466 } 467 return -EINVAL; 468 } 469 470 static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai, 471 unsigned int fmt) 472 { 473 struct snd_soc_codec *codec = codec_dai->codec; 474 u16 iface = 0; 475 476 /* set master/slave audio interface */ 477 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 478 case SND_SOC_DAIFMT_CBM_CFM: 479 iface = 0x0040; 480 break; 481 case SND_SOC_DAIFMT_CBS_CFS: 482 break; 483 default: 484 return -EINVAL; 485 } 486 487 /* interface format */ 488 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 489 case SND_SOC_DAIFMT_I2S: 490 iface |= 0x0002; 491 break; 492 case SND_SOC_DAIFMT_RIGHT_J: 493 break; 494 case SND_SOC_DAIFMT_LEFT_J: 495 iface |= 0x0001; 496 break; 497 case SND_SOC_DAIFMT_DSP_A: 498 iface |= 0x0003; 499 break; 500 case SND_SOC_DAIFMT_DSP_B: 501 iface |= 0x0013; 502 break; 503 default: 504 return -EINVAL; 505 } 506 507 /* clock inversion */ 508 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 509 case SND_SOC_DAIFMT_NB_NF: 510 break; 511 case SND_SOC_DAIFMT_IB_IF: 512 iface |= 0x0090; 513 break; 514 case SND_SOC_DAIFMT_IB_NF: 515 iface |= 0x0080; 516 break; 517 case SND_SOC_DAIFMT_NB_IF: 518 iface |= 0x0010; 519 break; 520 default: 521 return -EINVAL; 522 } 523 524 wm8971_write(codec, WM8971_IFACE, iface); 525 return 0; 526 } 527 528 static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream, 529 struct snd_pcm_hw_params *params, 530 struct snd_soc_dai *dai) 531 { 532 struct snd_soc_pcm_runtime *rtd = substream->private_data; 533 struct snd_soc_device *socdev = rtd->socdev; 534 struct snd_soc_codec *codec = socdev->card->codec; 535 struct wm8971_priv *wm8971 = codec->private_data; 536 u16 iface = wm8971_read_reg_cache(codec, WM8971_IFACE) & 0x1f3; 537 u16 srate = wm8971_read_reg_cache(codec, WM8971_SRATE) & 0x1c0; 538 int coeff = get_coeff(wm8971->sysclk, params_rate(params)); 539 540 /* bit size */ 541 switch (params_format(params)) { 542 case SNDRV_PCM_FORMAT_S16_LE: 543 break; 544 case SNDRV_PCM_FORMAT_S20_3LE: 545 iface |= 0x0004; 546 break; 547 case SNDRV_PCM_FORMAT_S24_LE: 548 iface |= 0x0008; 549 break; 550 case SNDRV_PCM_FORMAT_S32_LE: 551 iface |= 0x000c; 552 break; 553 } 554 555 /* set iface & srate */ 556 wm8971_write(codec, WM8971_IFACE, iface); 557 if (coeff >= 0) 558 wm8971_write(codec, WM8971_SRATE, srate | 559 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb); 560 561 return 0; 562 } 563 564 static int wm8971_mute(struct snd_soc_dai *dai, int mute) 565 { 566 struct snd_soc_codec *codec = dai->codec; 567 u16 mute_reg = wm8971_read_reg_cache(codec, WM8971_ADCDAC) & 0xfff7; 568 569 if (mute) 570 wm8971_write(codec, WM8971_ADCDAC, mute_reg | 0x8); 571 else 572 wm8971_write(codec, WM8971_ADCDAC, mute_reg); 573 return 0; 574 } 575 576 static int wm8971_set_bias_level(struct snd_soc_codec *codec, 577 enum snd_soc_bias_level level) 578 { 579 u16 pwr_reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e; 580 581 switch (level) { 582 case SND_SOC_BIAS_ON: 583 /* set vmid to 50k and unmute dac */ 584 wm8971_write(codec, WM8971_PWR1, pwr_reg | 0x00c1); 585 break; 586 case SND_SOC_BIAS_PREPARE: 587 break; 588 case SND_SOC_BIAS_STANDBY: 589 /* mute dac and set vmid to 500k, enable VREF */ 590 wm8971_write(codec, WM8971_PWR1, pwr_reg | 0x0140); 591 break; 592 case SND_SOC_BIAS_OFF: 593 wm8971_write(codec, WM8971_PWR1, 0x0001); 594 break; 595 } 596 codec->bias_level = level; 597 return 0; 598 } 599 600 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 601 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ 602 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) 603 604 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 605 SNDRV_PCM_FMTBIT_S24_LE) 606 607 static struct snd_soc_dai_ops wm8971_dai_ops = { 608 .hw_params = wm8971_pcm_hw_params, 609 .digital_mute = wm8971_mute, 610 .set_fmt = wm8971_set_dai_fmt, 611 .set_sysclk = wm8971_set_dai_sysclk, 612 }; 613 614 struct snd_soc_dai wm8971_dai = { 615 .name = "WM8971", 616 .playback = { 617 .stream_name = "Playback", 618 .channels_min = 1, 619 .channels_max = 2, 620 .rates = WM8971_RATES, 621 .formats = WM8971_FORMATS,}, 622 .capture = { 623 .stream_name = "Capture", 624 .channels_min = 1, 625 .channels_max = 2, 626 .rates = WM8971_RATES, 627 .formats = WM8971_FORMATS,}, 628 .ops = &wm8971_dai_ops, 629 }; 630 EXPORT_SYMBOL_GPL(wm8971_dai); 631 632 static void wm8971_work(struct work_struct *work) 633 { 634 struct snd_soc_codec *codec = 635 container_of(work, struct snd_soc_codec, delayed_work.work); 636 wm8971_set_bias_level(codec, codec->bias_level); 637 } 638 639 static int wm8971_suspend(struct platform_device *pdev, pm_message_t state) 640 { 641 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 642 struct snd_soc_codec *codec = socdev->card->codec; 643 644 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); 645 return 0; 646 } 647 648 static int wm8971_resume(struct platform_device *pdev) 649 { 650 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 651 struct snd_soc_codec *codec = socdev->card->codec; 652 int i; 653 u8 data[2]; 654 u16 *cache = codec->reg_cache; 655 u16 reg; 656 657 /* Sync reg_cache with the hardware */ 658 for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) { 659 if (i + 1 == WM8971_RESET) 660 continue; 661 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 662 data[1] = cache[i] & 0x00ff; 663 codec->hw_write(codec->control_data, data, 2); 664 } 665 666 wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 667 668 /* charge wm8971 caps */ 669 if (codec->suspend_bias_level == SND_SOC_BIAS_ON) { 670 reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e; 671 wm8971_write(codec, WM8971_PWR1, reg | 0x01c0); 672 codec->bias_level = SND_SOC_BIAS_ON; 673 queue_delayed_work(wm8971_workq, &codec->delayed_work, 674 msecs_to_jiffies(1000)); 675 } 676 677 return 0; 678 } 679 680 static int wm8971_init(struct snd_soc_device *socdev) 681 { 682 struct snd_soc_codec *codec = socdev->card->codec; 683 int reg, ret = 0; 684 685 codec->name = "WM8971"; 686 codec->owner = THIS_MODULE; 687 codec->read = wm8971_read_reg_cache; 688 codec->write = wm8971_write; 689 codec->set_bias_level = wm8971_set_bias_level; 690 codec->dai = &wm8971_dai; 691 codec->reg_cache_size = ARRAY_SIZE(wm8971_reg); 692 codec->num_dai = 1; 693 codec->reg_cache = kmemdup(wm8971_reg, sizeof(wm8971_reg), GFP_KERNEL); 694 695 if (codec->reg_cache == NULL) 696 return -ENOMEM; 697 698 wm8971_reset(codec); 699 700 /* register pcms */ 701 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 702 if (ret < 0) { 703 printk(KERN_ERR "wm8971: failed to create pcms\n"); 704 goto pcm_err; 705 } 706 707 /* charge output caps - set vmid to 5k for quick power up */ 708 reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e; 709 wm8971_write(codec, WM8971_PWR1, reg | 0x01c0); 710 codec->bias_level = SND_SOC_BIAS_STANDBY; 711 queue_delayed_work(wm8971_workq, &codec->delayed_work, 712 msecs_to_jiffies(1000)); 713 714 /* set the update bits */ 715 reg = wm8971_read_reg_cache(codec, WM8971_LDAC); 716 wm8971_write(codec, WM8971_LDAC, reg | 0x0100); 717 reg = wm8971_read_reg_cache(codec, WM8971_RDAC); 718 wm8971_write(codec, WM8971_RDAC, reg | 0x0100); 719 720 reg = wm8971_read_reg_cache(codec, WM8971_LOUT1V); 721 wm8971_write(codec, WM8971_LOUT1V, reg | 0x0100); 722 reg = wm8971_read_reg_cache(codec, WM8971_ROUT1V); 723 wm8971_write(codec, WM8971_ROUT1V, reg | 0x0100); 724 725 reg = wm8971_read_reg_cache(codec, WM8971_LOUT2V); 726 wm8971_write(codec, WM8971_LOUT2V, reg | 0x0100); 727 reg = wm8971_read_reg_cache(codec, WM8971_ROUT2V); 728 wm8971_write(codec, WM8971_ROUT2V, reg | 0x0100); 729 730 reg = wm8971_read_reg_cache(codec, WM8971_LINVOL); 731 wm8971_write(codec, WM8971_LINVOL, reg | 0x0100); 732 reg = wm8971_read_reg_cache(codec, WM8971_RINVOL); 733 wm8971_write(codec, WM8971_RINVOL, reg | 0x0100); 734 735 snd_soc_add_controls(codec, wm8971_snd_controls, 736 ARRAY_SIZE(wm8971_snd_controls)); 737 wm8971_add_widgets(codec); 738 ret = snd_soc_init_card(socdev); 739 if (ret < 0) { 740 printk(KERN_ERR "wm8971: failed to register card\n"); 741 goto card_err; 742 } 743 return ret; 744 745 card_err: 746 snd_soc_free_pcms(socdev); 747 snd_soc_dapm_free(socdev); 748 pcm_err: 749 kfree(codec->reg_cache); 750 return ret; 751 } 752 753 /* If the i2c layer weren't so broken, we could pass this kind of data 754 around */ 755 static struct snd_soc_device *wm8971_socdev; 756 757 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) 758 759 static int wm8971_i2c_probe(struct i2c_client *i2c, 760 const struct i2c_device_id *id) 761 { 762 struct snd_soc_device *socdev = wm8971_socdev; 763 struct snd_soc_codec *codec = socdev->card->codec; 764 int ret; 765 766 i2c_set_clientdata(i2c, codec); 767 768 codec->control_data = i2c; 769 770 ret = wm8971_init(socdev); 771 if (ret < 0) 772 pr_err("failed to initialise WM8971\n"); 773 774 return ret; 775 } 776 777 static int wm8971_i2c_remove(struct i2c_client *client) 778 { 779 struct snd_soc_codec *codec = i2c_get_clientdata(client); 780 kfree(codec->reg_cache); 781 return 0; 782 } 783 784 static const struct i2c_device_id wm8971_i2c_id[] = { 785 { "wm8971", 0 }, 786 { } 787 }; 788 MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id); 789 790 static struct i2c_driver wm8971_i2c_driver = { 791 .driver = { 792 .name = "WM8971 I2C Codec", 793 .owner = THIS_MODULE, 794 }, 795 .probe = wm8971_i2c_probe, 796 .remove = wm8971_i2c_remove, 797 .id_table = wm8971_i2c_id, 798 }; 799 800 static int wm8971_add_i2c_device(struct platform_device *pdev, 801 const struct wm8971_setup_data *setup) 802 { 803 struct i2c_board_info info; 804 struct i2c_adapter *adapter; 805 struct i2c_client *client; 806 int ret; 807 808 ret = i2c_add_driver(&wm8971_i2c_driver); 809 if (ret != 0) { 810 dev_err(&pdev->dev, "can't add i2c driver\n"); 811 return ret; 812 } 813 814 memset(&info, 0, sizeof(struct i2c_board_info)); 815 info.addr = setup->i2c_address; 816 strlcpy(info.type, "wm8971", I2C_NAME_SIZE); 817 818 adapter = i2c_get_adapter(setup->i2c_bus); 819 if (!adapter) { 820 dev_err(&pdev->dev, "can't get i2c adapter %d\n", 821 setup->i2c_bus); 822 goto err_driver; 823 } 824 825 client = i2c_new_device(adapter, &info); 826 i2c_put_adapter(adapter); 827 if (!client) { 828 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", 829 (unsigned int)info.addr); 830 goto err_driver; 831 } 832 833 return 0; 834 835 err_driver: 836 i2c_del_driver(&wm8971_i2c_driver); 837 return -ENODEV; 838 } 839 840 #endif 841 842 static int wm8971_probe(struct platform_device *pdev) 843 { 844 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 845 struct wm8971_setup_data *setup; 846 struct snd_soc_codec *codec; 847 struct wm8971_priv *wm8971; 848 int ret = 0; 849 850 pr_info("WM8971 Audio Codec %s", WM8971_VERSION); 851 852 setup = socdev->codec_data; 853 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 854 if (codec == NULL) 855 return -ENOMEM; 856 857 wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL); 858 if (wm8971 == NULL) { 859 kfree(codec); 860 return -ENOMEM; 861 } 862 863 codec->private_data = wm8971; 864 socdev->card->codec = codec; 865 mutex_init(&codec->mutex); 866 INIT_LIST_HEAD(&codec->dapm_widgets); 867 INIT_LIST_HEAD(&codec->dapm_paths); 868 wm8971_socdev = socdev; 869 870 INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work); 871 wm8971_workq = create_workqueue("wm8971"); 872 if (wm8971_workq == NULL) { 873 kfree(codec->private_data); 874 kfree(codec); 875 return -ENOMEM; 876 } 877 878 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) 879 if (setup->i2c_address) { 880 codec->hw_write = (hw_write_t)i2c_master_send; 881 ret = wm8971_add_i2c_device(pdev, setup); 882 } 883 #endif 884 /* Add other interfaces here */ 885 886 if (ret != 0) { 887 destroy_workqueue(wm8971_workq); 888 kfree(codec->private_data); 889 kfree(codec); 890 } 891 892 return ret; 893 } 894 895 /* power down chip */ 896 static int wm8971_remove(struct platform_device *pdev) 897 { 898 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 899 struct snd_soc_codec *codec = socdev->card->codec; 900 901 if (codec->control_data) 902 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); 903 if (wm8971_workq) 904 destroy_workqueue(wm8971_workq); 905 snd_soc_free_pcms(socdev); 906 snd_soc_dapm_free(socdev); 907 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) 908 i2c_unregister_device(codec->control_data); 909 i2c_del_driver(&wm8971_i2c_driver); 910 #endif 911 kfree(codec->private_data); 912 kfree(codec); 913 914 return 0; 915 } 916 917 struct snd_soc_codec_device soc_codec_dev_wm8971 = { 918 .probe = wm8971_probe, 919 .remove = wm8971_remove, 920 .suspend = wm8971_suspend, 921 .resume = wm8971_resume, 922 }; 923 924 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8971); 925 926 static int __init wm8971_modinit(void) 927 { 928 return snd_soc_register_dai(&wm8971_dai); 929 } 930 module_init(wm8971_modinit); 931 932 static void __exit wm8971_exit(void) 933 { 934 snd_soc_unregister_dai(&wm8971_dai); 935 } 936 module_exit(wm8971_exit); 937 938 MODULE_DESCRIPTION("ASoC WM8971 driver"); 939 MODULE_AUTHOR("Lab126"); 940 MODULE_LICENSE("GPL"); 941