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 /* add non-DAPM controls */ 199 static int wm8971_add_controls(struct snd_soc_codec *codec) 200 { 201 int err, i; 202 203 for (i = 0; i < ARRAY_SIZE(wm8971_snd_controls); i++) { 204 err = snd_ctl_add(codec->card, 205 snd_soc_cnew(&wm8971_snd_controls[i], 206 codec, NULL)); 207 if (err < 0) 208 return err; 209 } 210 return 0; 211 } 212 213 /* 214 * DAPM Controls 215 */ 216 217 /* Left Mixer */ 218 static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = { 219 SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0), 220 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0), 221 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0), 222 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0), 223 }; 224 225 /* Right Mixer */ 226 static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = { 227 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0), 228 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0), 229 SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0), 230 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0), 231 }; 232 233 /* Mono Mixer */ 234 static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = { 235 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0), 236 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0), 237 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0), 238 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0), 239 }; 240 241 /* Left Line Mux */ 242 static const struct snd_kcontrol_new wm8971_left_line_controls = 243 SOC_DAPM_ENUM("Route", wm8971_enum[8]); 244 245 /* Right Line Mux */ 246 static const struct snd_kcontrol_new wm8971_right_line_controls = 247 SOC_DAPM_ENUM("Route", wm8971_enum[9]); 248 249 /* Left PGA Mux */ 250 static const struct snd_kcontrol_new wm8971_left_pga_controls = 251 SOC_DAPM_ENUM("Route", wm8971_enum[10]); 252 253 /* Right PGA Mux */ 254 static const struct snd_kcontrol_new wm8971_right_pga_controls = 255 SOC_DAPM_ENUM("Route", wm8971_enum[11]); 256 257 /* Mono ADC Mux */ 258 static const struct snd_kcontrol_new wm8971_monomux_controls = 259 SOC_DAPM_ENUM("Route", wm8971_enum[13]); 260 261 static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = { 262 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0, 263 &wm8971_left_mixer_controls[0], 264 ARRAY_SIZE(wm8971_left_mixer_controls)), 265 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0, 266 &wm8971_right_mixer_controls[0], 267 ARRAY_SIZE(wm8971_right_mixer_controls)), 268 SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0, 269 &wm8971_mono_mixer_controls[0], 270 ARRAY_SIZE(wm8971_mono_mixer_controls)), 271 272 SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0), 273 SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0), 274 SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0), 275 SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0), 276 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0), 277 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0), 278 SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0), 279 280 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8971_PWR1, 1, 0), 281 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0), 282 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0), 283 284 SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0, 285 &wm8971_left_pga_controls), 286 SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0, 287 &wm8971_right_pga_controls), 288 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0, 289 &wm8971_left_line_controls), 290 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0, 291 &wm8971_right_line_controls), 292 293 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0, 294 &wm8971_monomux_controls), 295 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0, 296 &wm8971_monomux_controls), 297 298 SND_SOC_DAPM_OUTPUT("LOUT1"), 299 SND_SOC_DAPM_OUTPUT("ROUT1"), 300 SND_SOC_DAPM_OUTPUT("LOUT2"), 301 SND_SOC_DAPM_OUTPUT("ROUT2"), 302 SND_SOC_DAPM_OUTPUT("MONO"), 303 304 SND_SOC_DAPM_INPUT("LINPUT1"), 305 SND_SOC_DAPM_INPUT("RINPUT1"), 306 SND_SOC_DAPM_INPUT("MIC"), 307 }; 308 309 static const struct snd_soc_dapm_route audio_map[] = { 310 /* left mixer */ 311 {"Left Mixer", "Playback Switch", "Left DAC"}, 312 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"}, 313 {"Left Mixer", "Right Playback Switch", "Right DAC"}, 314 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"}, 315 316 /* right mixer */ 317 {"Right Mixer", "Left Playback Switch", "Left DAC"}, 318 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"}, 319 {"Right Mixer", "Playback Switch", "Right DAC"}, 320 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"}, 321 322 /* left out 1 */ 323 {"Left Out 1", NULL, "Left Mixer"}, 324 {"LOUT1", NULL, "Left Out 1"}, 325 326 /* left out 2 */ 327 {"Left Out 2", NULL, "Left Mixer"}, 328 {"LOUT2", NULL, "Left Out 2"}, 329 330 /* right out 1 */ 331 {"Right Out 1", NULL, "Right Mixer"}, 332 {"ROUT1", NULL, "Right Out 1"}, 333 334 /* right out 2 */ 335 {"Right Out 2", NULL, "Right Mixer"}, 336 {"ROUT2", NULL, "Right Out 2"}, 337 338 /* mono mixer */ 339 {"Mono Mixer", "Left Playback Switch", "Left DAC"}, 340 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"}, 341 {"Mono Mixer", "Right Playback Switch", "Right DAC"}, 342 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"}, 343 344 /* mono out */ 345 {"Mono Out", NULL, "Mono Mixer"}, 346 {"MONO1", NULL, "Mono Out"}, 347 348 /* Left Line Mux */ 349 {"Left Line Mux", "Line", "LINPUT1"}, 350 {"Left Line Mux", "PGA", "Left PGA Mux"}, 351 {"Left Line Mux", "Differential", "Differential Mux"}, 352 353 /* Right Line Mux */ 354 {"Right Line Mux", "Line", "RINPUT1"}, 355 {"Right Line Mux", "Mic", "MIC"}, 356 {"Right Line Mux", "PGA", "Right PGA Mux"}, 357 {"Right Line Mux", "Differential", "Differential Mux"}, 358 359 /* Left PGA Mux */ 360 {"Left PGA Mux", "Line", "LINPUT1"}, 361 {"Left PGA Mux", "Differential", "Differential Mux"}, 362 363 /* Right PGA Mux */ 364 {"Right PGA Mux", "Line", "RINPUT1"}, 365 {"Right PGA Mux", "Differential", "Differential Mux"}, 366 367 /* Differential Mux */ 368 {"Differential Mux", "Line", "LINPUT1"}, 369 {"Differential Mux", "Line", "RINPUT1"}, 370 371 /* Left ADC Mux */ 372 {"Left ADC Mux", "Stereo", "Left PGA Mux"}, 373 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"}, 374 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"}, 375 376 /* Right ADC Mux */ 377 {"Right ADC Mux", "Stereo", "Right PGA Mux"}, 378 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"}, 379 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"}, 380 381 /* ADC */ 382 {"Left ADC", NULL, "Left ADC Mux"}, 383 {"Right ADC", NULL, "Right ADC Mux"}, 384 }; 385 386 static int wm8971_add_widgets(struct snd_soc_codec *codec) 387 { 388 snd_soc_dapm_new_controls(codec, wm8971_dapm_widgets, 389 ARRAY_SIZE(wm8971_dapm_widgets)); 390 391 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 392 393 snd_soc_dapm_new_widgets(codec); 394 395 return 0; 396 } 397 398 struct _coeff_div { 399 u32 mclk; 400 u32 rate; 401 u16 fs; 402 u8 sr:5; 403 u8 usb:1; 404 }; 405 406 /* codec hifi mclk clock divider coefficients */ 407 static const struct _coeff_div coeff_div[] = { 408 /* 8k */ 409 {12288000, 8000, 1536, 0x6, 0x0}, 410 {11289600, 8000, 1408, 0x16, 0x0}, 411 {18432000, 8000, 2304, 0x7, 0x0}, 412 {16934400, 8000, 2112, 0x17, 0x0}, 413 {12000000, 8000, 1500, 0x6, 0x1}, 414 415 /* 11.025k */ 416 {11289600, 11025, 1024, 0x18, 0x0}, 417 {16934400, 11025, 1536, 0x19, 0x0}, 418 {12000000, 11025, 1088, 0x19, 0x1}, 419 420 /* 16k */ 421 {12288000, 16000, 768, 0xa, 0x0}, 422 {18432000, 16000, 1152, 0xb, 0x0}, 423 {12000000, 16000, 750, 0xa, 0x1}, 424 425 /* 22.05k */ 426 {11289600, 22050, 512, 0x1a, 0x0}, 427 {16934400, 22050, 768, 0x1b, 0x0}, 428 {12000000, 22050, 544, 0x1b, 0x1}, 429 430 /* 32k */ 431 {12288000, 32000, 384, 0xc, 0x0}, 432 {18432000, 32000, 576, 0xd, 0x0}, 433 {12000000, 32000, 375, 0xa, 0x1}, 434 435 /* 44.1k */ 436 {11289600, 44100, 256, 0x10, 0x0}, 437 {16934400, 44100, 384, 0x11, 0x0}, 438 {12000000, 44100, 272, 0x11, 0x1}, 439 440 /* 48k */ 441 {12288000, 48000, 256, 0x0, 0x0}, 442 {18432000, 48000, 384, 0x1, 0x0}, 443 {12000000, 48000, 250, 0x0, 0x1}, 444 445 /* 88.2k */ 446 {11289600, 88200, 128, 0x1e, 0x0}, 447 {16934400, 88200, 192, 0x1f, 0x0}, 448 {12000000, 88200, 136, 0x1f, 0x1}, 449 450 /* 96k */ 451 {12288000, 96000, 128, 0xe, 0x0}, 452 {18432000, 96000, 192, 0xf, 0x0}, 453 {12000000, 96000, 125, 0xe, 0x1}, 454 }; 455 456 static int get_coeff(int mclk, int rate) 457 { 458 int i; 459 460 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { 461 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) 462 return i; 463 } 464 return -EINVAL; 465 } 466 467 static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai, 468 int clk_id, unsigned int freq, int dir) 469 { 470 struct snd_soc_codec *codec = codec_dai->codec; 471 struct wm8971_priv *wm8971 = codec->private_data; 472 473 switch (freq) { 474 case 11289600: 475 case 12000000: 476 case 12288000: 477 case 16934400: 478 case 18432000: 479 wm8971->sysclk = freq; 480 return 0; 481 } 482 return -EINVAL; 483 } 484 485 static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai, 486 unsigned int fmt) 487 { 488 struct snd_soc_codec *codec = codec_dai->codec; 489 u16 iface = 0; 490 491 /* set master/slave audio interface */ 492 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 493 case SND_SOC_DAIFMT_CBM_CFM: 494 iface = 0x0040; 495 break; 496 case SND_SOC_DAIFMT_CBS_CFS: 497 break; 498 default: 499 return -EINVAL; 500 } 501 502 /* interface format */ 503 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 504 case SND_SOC_DAIFMT_I2S: 505 iface |= 0x0002; 506 break; 507 case SND_SOC_DAIFMT_RIGHT_J: 508 break; 509 case SND_SOC_DAIFMT_LEFT_J: 510 iface |= 0x0001; 511 break; 512 case SND_SOC_DAIFMT_DSP_A: 513 iface |= 0x0003; 514 break; 515 case SND_SOC_DAIFMT_DSP_B: 516 iface |= 0x0013; 517 break; 518 default: 519 return -EINVAL; 520 } 521 522 /* clock inversion */ 523 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 524 case SND_SOC_DAIFMT_NB_NF: 525 break; 526 case SND_SOC_DAIFMT_IB_IF: 527 iface |= 0x0090; 528 break; 529 case SND_SOC_DAIFMT_IB_NF: 530 iface |= 0x0080; 531 break; 532 case SND_SOC_DAIFMT_NB_IF: 533 iface |= 0x0010; 534 break; 535 default: 536 return -EINVAL; 537 } 538 539 wm8971_write(codec, WM8971_IFACE, iface); 540 return 0; 541 } 542 543 static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream, 544 struct snd_pcm_hw_params *params) 545 { 546 struct snd_soc_pcm_runtime *rtd = substream->private_data; 547 struct snd_soc_device *socdev = rtd->socdev; 548 struct snd_soc_codec *codec = socdev->codec; 549 struct wm8971_priv *wm8971 = codec->private_data; 550 u16 iface = wm8971_read_reg_cache(codec, WM8971_IFACE) & 0x1f3; 551 u16 srate = wm8971_read_reg_cache(codec, WM8971_SRATE) & 0x1c0; 552 int coeff = get_coeff(wm8971->sysclk, params_rate(params)); 553 554 /* bit size */ 555 switch (params_format(params)) { 556 case SNDRV_PCM_FORMAT_S16_LE: 557 break; 558 case SNDRV_PCM_FORMAT_S20_3LE: 559 iface |= 0x0004; 560 break; 561 case SNDRV_PCM_FORMAT_S24_LE: 562 iface |= 0x0008; 563 break; 564 case SNDRV_PCM_FORMAT_S32_LE: 565 iface |= 0x000c; 566 break; 567 } 568 569 /* set iface & srate */ 570 wm8971_write(codec, WM8971_IFACE, iface); 571 if (coeff >= 0) 572 wm8971_write(codec, WM8971_SRATE, srate | 573 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb); 574 575 return 0; 576 } 577 578 static int wm8971_mute(struct snd_soc_dai *dai, int mute) 579 { 580 struct snd_soc_codec *codec = dai->codec; 581 u16 mute_reg = wm8971_read_reg_cache(codec, WM8971_ADCDAC) & 0xfff7; 582 583 if (mute) 584 wm8971_write(codec, WM8971_ADCDAC, mute_reg | 0x8); 585 else 586 wm8971_write(codec, WM8971_ADCDAC, mute_reg); 587 return 0; 588 } 589 590 static int wm8971_set_bias_level(struct snd_soc_codec *codec, 591 enum snd_soc_bias_level level) 592 { 593 u16 pwr_reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e; 594 595 switch (level) { 596 case SND_SOC_BIAS_ON: 597 /* set vmid to 50k and unmute dac */ 598 wm8971_write(codec, WM8971_PWR1, pwr_reg | 0x00c1); 599 break; 600 case SND_SOC_BIAS_PREPARE: 601 break; 602 case SND_SOC_BIAS_STANDBY: 603 /* mute dac and set vmid to 500k, enable VREF */ 604 wm8971_write(codec, WM8971_PWR1, pwr_reg | 0x0140); 605 break; 606 case SND_SOC_BIAS_OFF: 607 wm8971_write(codec, WM8971_PWR1, 0x0001); 608 break; 609 } 610 codec->bias_level = level; 611 return 0; 612 } 613 614 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 615 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ 616 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) 617 618 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 619 SNDRV_PCM_FMTBIT_S24_LE) 620 621 struct snd_soc_dai wm8971_dai = { 622 .name = "WM8971", 623 .playback = { 624 .stream_name = "Playback", 625 .channels_min = 1, 626 .channels_max = 2, 627 .rates = WM8971_RATES, 628 .formats = WM8971_FORMATS,}, 629 .capture = { 630 .stream_name = "Capture", 631 .channels_min = 1, 632 .channels_max = 2, 633 .rates = WM8971_RATES, 634 .formats = WM8971_FORMATS,}, 635 .ops = { 636 .hw_params = wm8971_pcm_hw_params, 637 }, 638 .dai_ops = { 639 .digital_mute = wm8971_mute, 640 .set_fmt = wm8971_set_dai_fmt, 641 .set_sysclk = wm8971_set_dai_sysclk, 642 }, 643 }; 644 EXPORT_SYMBOL_GPL(wm8971_dai); 645 646 static void wm8971_work(struct work_struct *work) 647 { 648 struct snd_soc_codec *codec = 649 container_of(work, struct snd_soc_codec, delayed_work.work); 650 wm8971_set_bias_level(codec, codec->bias_level); 651 } 652 653 static int wm8971_suspend(struct platform_device *pdev, pm_message_t state) 654 { 655 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 656 struct snd_soc_codec *codec = socdev->codec; 657 658 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); 659 return 0; 660 } 661 662 static int wm8971_resume(struct platform_device *pdev) 663 { 664 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 665 struct snd_soc_codec *codec = socdev->codec; 666 int i; 667 u8 data[2]; 668 u16 *cache = codec->reg_cache; 669 u16 reg; 670 671 /* Sync reg_cache with the hardware */ 672 for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) { 673 if (i + 1 == WM8971_RESET) 674 continue; 675 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 676 data[1] = cache[i] & 0x00ff; 677 codec->hw_write(codec->control_data, data, 2); 678 } 679 680 wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 681 682 /* charge wm8971 caps */ 683 if (codec->suspend_bias_level == SND_SOC_BIAS_ON) { 684 reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e; 685 wm8971_write(codec, WM8971_PWR1, reg | 0x01c0); 686 codec->bias_level = SND_SOC_BIAS_ON; 687 queue_delayed_work(wm8971_workq, &codec->delayed_work, 688 msecs_to_jiffies(1000)); 689 } 690 691 return 0; 692 } 693 694 static int wm8971_init(struct snd_soc_device *socdev) 695 { 696 struct snd_soc_codec *codec = socdev->codec; 697 int reg, ret = 0; 698 699 codec->name = "WM8971"; 700 codec->owner = THIS_MODULE; 701 codec->read = wm8971_read_reg_cache; 702 codec->write = wm8971_write; 703 codec->set_bias_level = wm8971_set_bias_level; 704 codec->dai = &wm8971_dai; 705 codec->reg_cache_size = ARRAY_SIZE(wm8971_reg); 706 codec->num_dai = 1; 707 codec->reg_cache = kmemdup(wm8971_reg, sizeof(wm8971_reg), GFP_KERNEL); 708 709 if (codec->reg_cache == NULL) 710 return -ENOMEM; 711 712 wm8971_reset(codec); 713 714 /* register pcms */ 715 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 716 if (ret < 0) { 717 printk(KERN_ERR "wm8971: failed to create pcms\n"); 718 goto pcm_err; 719 } 720 721 /* charge output caps - set vmid to 5k for quick power up */ 722 reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e; 723 wm8971_write(codec, WM8971_PWR1, reg | 0x01c0); 724 codec->bias_level = SND_SOC_BIAS_STANDBY; 725 queue_delayed_work(wm8971_workq, &codec->delayed_work, 726 msecs_to_jiffies(1000)); 727 728 /* set the update bits */ 729 reg = wm8971_read_reg_cache(codec, WM8971_LDAC); 730 wm8971_write(codec, WM8971_LDAC, reg | 0x0100); 731 reg = wm8971_read_reg_cache(codec, WM8971_RDAC); 732 wm8971_write(codec, WM8971_RDAC, reg | 0x0100); 733 734 reg = wm8971_read_reg_cache(codec, WM8971_LOUT1V); 735 wm8971_write(codec, WM8971_LOUT1V, reg | 0x0100); 736 reg = wm8971_read_reg_cache(codec, WM8971_ROUT1V); 737 wm8971_write(codec, WM8971_ROUT1V, reg | 0x0100); 738 739 reg = wm8971_read_reg_cache(codec, WM8971_LOUT2V); 740 wm8971_write(codec, WM8971_LOUT2V, reg | 0x0100); 741 reg = wm8971_read_reg_cache(codec, WM8971_ROUT2V); 742 wm8971_write(codec, WM8971_ROUT2V, reg | 0x0100); 743 744 reg = wm8971_read_reg_cache(codec, WM8971_LINVOL); 745 wm8971_write(codec, WM8971_LINVOL, reg | 0x0100); 746 reg = wm8971_read_reg_cache(codec, WM8971_RINVOL); 747 wm8971_write(codec, WM8971_RINVOL, reg | 0x0100); 748 749 wm8971_add_controls(codec); 750 wm8971_add_widgets(codec); 751 ret = snd_soc_register_card(socdev); 752 if (ret < 0) { 753 printk(KERN_ERR "wm8971: failed to register card\n"); 754 goto card_err; 755 } 756 return ret; 757 758 card_err: 759 snd_soc_free_pcms(socdev); 760 snd_soc_dapm_free(socdev); 761 pcm_err: 762 kfree(codec->reg_cache); 763 return ret; 764 } 765 766 /* If the i2c layer weren't so broken, we could pass this kind of data 767 around */ 768 static struct snd_soc_device *wm8971_socdev; 769 770 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) 771 772 static int wm8971_i2c_probe(struct i2c_client *i2c, 773 const struct i2c_device_id *id) 774 { 775 struct snd_soc_device *socdev = wm8971_socdev; 776 struct snd_soc_codec *codec = socdev->codec; 777 int ret; 778 779 i2c_set_clientdata(i2c, codec); 780 781 codec->control_data = i2c; 782 783 ret = wm8971_init(socdev); 784 if (ret < 0) 785 pr_err("failed to initialise WM8971\n"); 786 787 return ret; 788 } 789 790 static int wm8971_i2c_remove(struct i2c_client *client) 791 { 792 struct snd_soc_codec *codec = i2c_get_clientdata(client); 793 kfree(codec->reg_cache); 794 return 0; 795 } 796 797 static const struct i2c_device_id wm8971_i2c_id[] = { 798 { "wm8971", 0 }, 799 { } 800 }; 801 MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id); 802 803 static struct i2c_driver wm8971_i2c_driver = { 804 .driver = { 805 .name = "WM8971 I2C Codec", 806 .owner = THIS_MODULE, 807 }, 808 .probe = wm8971_i2c_probe, 809 .remove = wm8971_i2c_remove, 810 .id_table = wm8971_i2c_id, 811 }; 812 813 static int wm8971_add_i2c_device(struct platform_device *pdev, 814 const struct wm8971_setup_data *setup) 815 { 816 struct i2c_board_info info; 817 struct i2c_adapter *adapter; 818 struct i2c_client *client; 819 int ret; 820 821 ret = i2c_add_driver(&wm8971_i2c_driver); 822 if (ret != 0) { 823 dev_err(&pdev->dev, "can't add i2c driver\n"); 824 return ret; 825 } 826 827 memset(&info, 0, sizeof(struct i2c_board_info)); 828 info.addr = setup->i2c_address; 829 strlcpy(info.type, "wm8971", I2C_NAME_SIZE); 830 831 adapter = i2c_get_adapter(setup->i2c_bus); 832 if (!adapter) { 833 dev_err(&pdev->dev, "can't get i2c adapter %d\n", 834 setup->i2c_bus); 835 goto err_driver; 836 } 837 838 client = i2c_new_device(adapter, &info); 839 i2c_put_adapter(adapter); 840 if (!client) { 841 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", 842 (unsigned int)info.addr); 843 goto err_driver; 844 } 845 846 return 0; 847 848 err_driver: 849 i2c_del_driver(&wm8971_i2c_driver); 850 return -ENODEV; 851 } 852 853 #endif 854 855 static int wm8971_probe(struct platform_device *pdev) 856 { 857 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 858 struct wm8971_setup_data *setup; 859 struct snd_soc_codec *codec; 860 struct wm8971_priv *wm8971; 861 int ret = 0; 862 863 pr_info("WM8971 Audio Codec %s", WM8971_VERSION); 864 865 setup = socdev->codec_data; 866 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 867 if (codec == NULL) 868 return -ENOMEM; 869 870 wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL); 871 if (wm8971 == NULL) { 872 kfree(codec); 873 return -ENOMEM; 874 } 875 876 codec->private_data = wm8971; 877 socdev->codec = codec; 878 mutex_init(&codec->mutex); 879 INIT_LIST_HEAD(&codec->dapm_widgets); 880 INIT_LIST_HEAD(&codec->dapm_paths); 881 wm8971_socdev = socdev; 882 883 INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work); 884 wm8971_workq = create_workqueue("wm8971"); 885 if (wm8971_workq == NULL) { 886 kfree(codec->private_data); 887 kfree(codec); 888 return -ENOMEM; 889 } 890 891 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) 892 if (setup->i2c_address) { 893 codec->hw_write = (hw_write_t)i2c_master_send; 894 ret = wm8971_add_i2c_device(pdev, setup); 895 } 896 #endif 897 /* Add other interfaces here */ 898 899 if (ret != 0) { 900 destroy_workqueue(wm8971_workq); 901 kfree(codec->private_data); 902 kfree(codec); 903 } 904 905 return ret; 906 } 907 908 /* power down chip */ 909 static int wm8971_remove(struct platform_device *pdev) 910 { 911 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 912 struct snd_soc_codec *codec = socdev->codec; 913 914 if (codec->control_data) 915 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); 916 if (wm8971_workq) 917 destroy_workqueue(wm8971_workq); 918 snd_soc_free_pcms(socdev); 919 snd_soc_dapm_free(socdev); 920 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) 921 i2c_unregister_device(codec->control_data); 922 i2c_del_driver(&wm8971_i2c_driver); 923 #endif 924 kfree(codec->private_data); 925 kfree(codec); 926 927 return 0; 928 } 929 930 struct snd_soc_codec_device soc_codec_dev_wm8971 = { 931 .probe = wm8971_probe, 932 .remove = wm8971_remove, 933 .suspend = wm8971_suspend, 934 .resume = wm8971_resume, 935 }; 936 937 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8971); 938 939 MODULE_DESCRIPTION("ASoC WM8971 driver"); 940 MODULE_AUTHOR("Lab126"); 941 MODULE_LICENSE("GPL"); 942