1 /* 2 * wm8750.c -- WM8750 ALSA SoC audio driver 3 * 4 * Copyright 2005 Openedhand Ltd. 5 * 6 * Author: Richard Purdie <richard@openedhand.com> 7 * 8 * Based on WM8753.c 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 as 12 * published by the Free Software Foundation. 13 */ 14 15 #include <linux/module.h> 16 #include <linux/moduleparam.h> 17 #include <linux/init.h> 18 #include <linux/delay.h> 19 #include <linux/pm.h> 20 #include <linux/i2c.h> 21 #include <linux/platform_device.h> 22 #include <linux/spi/spi.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 "wm8750.h" 31 32 #define WM8750_VERSION "0.12" 33 34 /* codec private data */ 35 struct wm8750_priv { 36 unsigned int sysclk; 37 }; 38 39 /* 40 * wm8750 register cache 41 * We can't read the WM8750 register space when we 42 * are using 2 wire for device control, so we cache them instead. 43 */ 44 static const u16 wm8750_reg[] = { 45 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */ 46 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */ 47 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */ 48 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */ 49 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */ 50 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */ 51 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */ 52 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */ 53 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */ 54 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */ 55 0x0079, 0x0079, 0x0079, /* 40 */ 56 }; 57 58 /* 59 * read wm8750 register cache 60 */ 61 static inline unsigned int wm8750_read_reg_cache(struct snd_soc_codec *codec, 62 unsigned int reg) 63 { 64 u16 *cache = codec->reg_cache; 65 if (reg > WM8750_CACHE_REGNUM) 66 return -1; 67 return cache[reg]; 68 } 69 70 /* 71 * write wm8750 register cache 72 */ 73 static inline void wm8750_write_reg_cache(struct snd_soc_codec *codec, 74 unsigned int reg, unsigned int value) 75 { 76 u16 *cache = codec->reg_cache; 77 if (reg > WM8750_CACHE_REGNUM) 78 return; 79 cache[reg] = value; 80 } 81 82 static int wm8750_write(struct snd_soc_codec *codec, unsigned int reg, 83 unsigned int value) 84 { 85 u8 data[2]; 86 87 /* data is 88 * D15..D9 WM8753 register offset 89 * D8...D0 register data 90 */ 91 data[0] = (reg << 1) | ((value >> 8) & 0x0001); 92 data[1] = value & 0x00ff; 93 94 wm8750_write_reg_cache(codec, reg, value); 95 if (codec->hw_write(codec->control_data, data, 2) == 2) 96 return 0; 97 else 98 return -EIO; 99 } 100 101 #define wm8750_reset(c) wm8750_write(c, WM8750_RESET, 0) 102 103 /* 104 * WM8750 Controls 105 */ 106 static const char *wm8750_bass[] = {"Linear Control", "Adaptive Boost"}; 107 static const char *wm8750_bass_filter[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" }; 108 static const char *wm8750_treble[] = {"8kHz", "4kHz"}; 109 static const char *wm8750_3d_lc[] = {"200Hz", "500Hz"}; 110 static const char *wm8750_3d_uc[] = {"2.2kHz", "1.5kHz"}; 111 static const char *wm8750_3d_func[] = {"Capture", "Playback"}; 112 static const char *wm8750_alc_func[] = {"Off", "Right", "Left", "Stereo"}; 113 static const char *wm8750_ng_type[] = {"Constant PGA Gain", 114 "Mute ADC Output"}; 115 static const char *wm8750_line_mux[] = {"Line 1", "Line 2", "Line 3", "PGA", 116 "Differential"}; 117 static const char *wm8750_pga_sel[] = {"Line 1", "Line 2", "Line 3", 118 "Differential"}; 119 static const char *wm8750_out3[] = {"VREF", "ROUT1 + Vol", "MonoOut", 120 "ROUT1"}; 121 static const char *wm8750_diff_sel[] = {"Line 1", "Line 2"}; 122 static const char *wm8750_adcpol[] = {"Normal", "L Invert", "R Invert", 123 "L + R Invert"}; 124 static const char *wm8750_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"}; 125 static const char *wm8750_mono_mux[] = {"Stereo", "Mono (Left)", 126 "Mono (Right)", "Digital Mono"}; 127 128 static const struct soc_enum wm8750_enum[] = { 129 SOC_ENUM_SINGLE(WM8750_BASS, 7, 2, wm8750_bass), 130 SOC_ENUM_SINGLE(WM8750_BASS, 6, 2, wm8750_bass_filter), 131 SOC_ENUM_SINGLE(WM8750_TREBLE, 6, 2, wm8750_treble), 132 SOC_ENUM_SINGLE(WM8750_3D, 5, 2, wm8750_3d_lc), 133 SOC_ENUM_SINGLE(WM8750_3D, 6, 2, wm8750_3d_uc), 134 SOC_ENUM_SINGLE(WM8750_3D, 7, 2, wm8750_3d_func), 135 SOC_ENUM_SINGLE(WM8750_ALC1, 7, 4, wm8750_alc_func), 136 SOC_ENUM_SINGLE(WM8750_NGATE, 1, 2, wm8750_ng_type), 137 SOC_ENUM_SINGLE(WM8750_LOUTM1, 0, 5, wm8750_line_mux), 138 SOC_ENUM_SINGLE(WM8750_ROUTM1, 0, 5, wm8750_line_mux), 139 SOC_ENUM_SINGLE(WM8750_LADCIN, 6, 4, wm8750_pga_sel), /* 10 */ 140 SOC_ENUM_SINGLE(WM8750_RADCIN, 6, 4, wm8750_pga_sel), 141 SOC_ENUM_SINGLE(WM8750_ADCTL2, 7, 4, wm8750_out3), 142 SOC_ENUM_SINGLE(WM8750_ADCIN, 8, 2, wm8750_diff_sel), 143 SOC_ENUM_SINGLE(WM8750_ADCDAC, 5, 4, wm8750_adcpol), 144 SOC_ENUM_SINGLE(WM8750_ADCDAC, 1, 4, wm8750_deemph), 145 SOC_ENUM_SINGLE(WM8750_ADCIN, 6, 4, wm8750_mono_mux), /* 16 */ 146 147 }; 148 149 static const struct snd_kcontrol_new wm8750_snd_controls[] = { 150 151 SOC_DOUBLE_R("Capture Volume", WM8750_LINVOL, WM8750_RINVOL, 0, 63, 0), 152 SOC_DOUBLE_R("Capture ZC Switch", WM8750_LINVOL, WM8750_RINVOL, 6, 1, 0), 153 SOC_DOUBLE_R("Capture Switch", WM8750_LINVOL, WM8750_RINVOL, 7, 1, 1), 154 155 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8750_LOUT1V, 156 WM8750_ROUT1V, 7, 1, 0), 157 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8750_LOUT2V, 158 WM8750_ROUT2V, 7, 1, 0), 159 160 SOC_ENUM("Playback De-emphasis", wm8750_enum[15]), 161 162 SOC_ENUM("Capture Polarity", wm8750_enum[14]), 163 SOC_SINGLE("Playback 6dB Attenuate", WM8750_ADCDAC, 7, 1, 0), 164 SOC_SINGLE("Capture 6dB Attenuate", WM8750_ADCDAC, 8, 1, 0), 165 166 SOC_DOUBLE_R("PCM Volume", WM8750_LDAC, WM8750_RDAC, 0, 255, 0), 167 168 SOC_ENUM("Bass Boost", wm8750_enum[0]), 169 SOC_ENUM("Bass Filter", wm8750_enum[1]), 170 SOC_SINGLE("Bass Volume", WM8750_BASS, 0, 15, 1), 171 172 SOC_SINGLE("Treble Volume", WM8750_TREBLE, 0, 15, 1), 173 SOC_ENUM("Treble Cut-off", wm8750_enum[2]), 174 175 SOC_SINGLE("3D Switch", WM8750_3D, 0, 1, 0), 176 SOC_SINGLE("3D Volume", WM8750_3D, 1, 15, 0), 177 SOC_ENUM("3D Lower Cut-off", wm8750_enum[3]), 178 SOC_ENUM("3D Upper Cut-off", wm8750_enum[4]), 179 SOC_ENUM("3D Mode", wm8750_enum[5]), 180 181 SOC_SINGLE("ALC Capture Target Volume", WM8750_ALC1, 0, 7, 0), 182 SOC_SINGLE("ALC Capture Max Volume", WM8750_ALC1, 4, 7, 0), 183 SOC_ENUM("ALC Capture Function", wm8750_enum[6]), 184 SOC_SINGLE("ALC Capture ZC Switch", WM8750_ALC2, 7, 1, 0), 185 SOC_SINGLE("ALC Capture Hold Time", WM8750_ALC2, 0, 15, 0), 186 SOC_SINGLE("ALC Capture Decay Time", WM8750_ALC3, 4, 15, 0), 187 SOC_SINGLE("ALC Capture Attack Time", WM8750_ALC3, 0, 15, 0), 188 SOC_SINGLE("ALC Capture NG Threshold", WM8750_NGATE, 3, 31, 0), 189 SOC_ENUM("ALC Capture NG Type", wm8750_enum[4]), 190 SOC_SINGLE("ALC Capture NG Switch", WM8750_NGATE, 0, 1, 0), 191 192 SOC_SINGLE("Left ADC Capture Volume", WM8750_LADC, 0, 255, 0), 193 SOC_SINGLE("Right ADC Capture Volume", WM8750_RADC, 0, 255, 0), 194 195 SOC_SINGLE("ZC Timeout Switch", WM8750_ADCTL1, 0, 1, 0), 196 SOC_SINGLE("Playback Invert Switch", WM8750_ADCTL1, 1, 1, 0), 197 198 SOC_SINGLE("Right Speaker Playback Invert Switch", WM8750_ADCTL2, 4, 1, 0), 199 200 /* Unimplemented */ 201 /* ADCDAC Bit 0 - ADCHPD */ 202 /* ADCDAC Bit 4 - HPOR */ 203 /* ADCTL1 Bit 2,3 - DATSEL */ 204 /* ADCTL1 Bit 4,5 - DMONOMIX */ 205 /* ADCTL1 Bit 6,7 - VSEL */ 206 /* ADCTL2 Bit 2 - LRCM */ 207 /* ADCTL2 Bit 3 - TRI */ 208 /* ADCTL3 Bit 5 - HPFLREN */ 209 /* ADCTL3 Bit 6 - VROI */ 210 /* ADCTL3 Bit 7,8 - ADCLRM */ 211 /* ADCIN Bit 4 - LDCM */ 212 /* ADCIN Bit 5 - RDCM */ 213 214 SOC_DOUBLE_R("Mic Boost", WM8750_LADCIN, WM8750_RADCIN, 4, 3, 0), 215 216 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8750_LOUTM1, 217 WM8750_LOUTM2, 4, 7, 1), 218 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8750_ROUTM1, 219 WM8750_ROUTM2, 4, 7, 1), 220 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8750_MOUTM1, 221 WM8750_MOUTM2, 4, 7, 1), 222 223 SOC_SINGLE("Mono Playback ZC Switch", WM8750_MOUTV, 7, 1, 0), 224 225 SOC_DOUBLE_R("Headphone Playback Volume", WM8750_LOUT1V, WM8750_ROUT1V, 226 0, 127, 0), 227 SOC_DOUBLE_R("Speaker Playback Volume", WM8750_LOUT2V, WM8750_ROUT2V, 228 0, 127, 0), 229 230 SOC_SINGLE("Mono Playback Volume", WM8750_MOUTV, 0, 127, 0), 231 232 }; 233 234 /* add non dapm controls */ 235 static int wm8750_add_controls(struct snd_soc_codec *codec) 236 { 237 int err, i; 238 239 for (i = 0; i < ARRAY_SIZE(wm8750_snd_controls); i++) { 240 err = snd_ctl_add(codec->card, 241 snd_soc_cnew(&wm8750_snd_controls[i], 242 codec, NULL)); 243 if (err < 0) 244 return err; 245 } 246 return 0; 247 } 248 249 /* 250 * DAPM Controls 251 */ 252 253 /* Left Mixer */ 254 static const struct snd_kcontrol_new wm8750_left_mixer_controls[] = { 255 SOC_DAPM_SINGLE("Playback Switch", WM8750_LOUTM1, 8, 1, 0), 256 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_LOUTM1, 7, 1, 0), 257 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_LOUTM2, 8, 1, 0), 258 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_LOUTM2, 7, 1, 0), 259 }; 260 261 /* Right Mixer */ 262 static const struct snd_kcontrol_new wm8750_right_mixer_controls[] = { 263 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_ROUTM1, 8, 1, 0), 264 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_ROUTM1, 7, 1, 0), 265 SOC_DAPM_SINGLE("Playback Switch", WM8750_ROUTM2, 8, 1, 0), 266 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_ROUTM2, 7, 1, 0), 267 }; 268 269 /* Mono Mixer */ 270 static const struct snd_kcontrol_new wm8750_mono_mixer_controls[] = { 271 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_MOUTM1, 8, 1, 0), 272 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_MOUTM1, 7, 1, 0), 273 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_MOUTM2, 8, 1, 0), 274 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_MOUTM2, 7, 1, 0), 275 }; 276 277 /* Left Line Mux */ 278 static const struct snd_kcontrol_new wm8750_left_line_controls = 279 SOC_DAPM_ENUM("Route", wm8750_enum[8]); 280 281 /* Right Line Mux */ 282 static const struct snd_kcontrol_new wm8750_right_line_controls = 283 SOC_DAPM_ENUM("Route", wm8750_enum[9]); 284 285 /* Left PGA Mux */ 286 static const struct snd_kcontrol_new wm8750_left_pga_controls = 287 SOC_DAPM_ENUM("Route", wm8750_enum[10]); 288 289 /* Right PGA Mux */ 290 static const struct snd_kcontrol_new wm8750_right_pga_controls = 291 SOC_DAPM_ENUM("Route", wm8750_enum[11]); 292 293 /* Out 3 Mux */ 294 static const struct snd_kcontrol_new wm8750_out3_controls = 295 SOC_DAPM_ENUM("Route", wm8750_enum[12]); 296 297 /* Differential Mux */ 298 static const struct snd_kcontrol_new wm8750_diffmux_controls = 299 SOC_DAPM_ENUM("Route", wm8750_enum[13]); 300 301 /* Mono ADC Mux */ 302 static const struct snd_kcontrol_new wm8750_monomux_controls = 303 SOC_DAPM_ENUM("Route", wm8750_enum[16]); 304 305 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = { 306 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0, 307 &wm8750_left_mixer_controls[0], 308 ARRAY_SIZE(wm8750_left_mixer_controls)), 309 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0, 310 &wm8750_right_mixer_controls[0], 311 ARRAY_SIZE(wm8750_right_mixer_controls)), 312 SND_SOC_DAPM_MIXER("Mono Mixer", WM8750_PWR2, 2, 0, 313 &wm8750_mono_mixer_controls[0], 314 ARRAY_SIZE(wm8750_mono_mixer_controls)), 315 316 SND_SOC_DAPM_PGA("Right Out 2", WM8750_PWR2, 3, 0, NULL, 0), 317 SND_SOC_DAPM_PGA("Left Out 2", WM8750_PWR2, 4, 0, NULL, 0), 318 SND_SOC_DAPM_PGA("Right Out 1", WM8750_PWR2, 5, 0, NULL, 0), 319 SND_SOC_DAPM_PGA("Left Out 1", WM8750_PWR2, 6, 0, NULL, 0), 320 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8750_PWR2, 7, 0), 321 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8750_PWR2, 8, 0), 322 323 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8750_PWR1, 1, 0), 324 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8750_PWR1, 2, 0), 325 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8750_PWR1, 3, 0), 326 327 SND_SOC_DAPM_MUX("Left PGA Mux", WM8750_PWR1, 5, 0, 328 &wm8750_left_pga_controls), 329 SND_SOC_DAPM_MUX("Right PGA Mux", WM8750_PWR1, 4, 0, 330 &wm8750_right_pga_controls), 331 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0, 332 &wm8750_left_line_controls), 333 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0, 334 &wm8750_right_line_controls), 335 336 SND_SOC_DAPM_MUX("Out3 Mux", SND_SOC_NOPM, 0, 0, &wm8750_out3_controls), 337 SND_SOC_DAPM_PGA("Out 3", WM8750_PWR2, 1, 0, NULL, 0), 338 SND_SOC_DAPM_PGA("Mono Out 1", WM8750_PWR2, 2, 0, NULL, 0), 339 340 SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0, 341 &wm8750_diffmux_controls), 342 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0, 343 &wm8750_monomux_controls), 344 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0, 345 &wm8750_monomux_controls), 346 347 SND_SOC_DAPM_OUTPUT("LOUT1"), 348 SND_SOC_DAPM_OUTPUT("ROUT1"), 349 SND_SOC_DAPM_OUTPUT("LOUT2"), 350 SND_SOC_DAPM_OUTPUT("ROUT2"), 351 SND_SOC_DAPM_OUTPUT("MONO1"), 352 SND_SOC_DAPM_OUTPUT("OUT3"), 353 SND_SOC_DAPM_OUTPUT("VREF"), 354 355 SND_SOC_DAPM_INPUT("LINPUT1"), 356 SND_SOC_DAPM_INPUT("LINPUT2"), 357 SND_SOC_DAPM_INPUT("LINPUT3"), 358 SND_SOC_DAPM_INPUT("RINPUT1"), 359 SND_SOC_DAPM_INPUT("RINPUT2"), 360 SND_SOC_DAPM_INPUT("RINPUT3"), 361 }; 362 363 static const struct snd_soc_dapm_route audio_map[] = { 364 /* left mixer */ 365 {"Left Mixer", "Playback Switch", "Left DAC"}, 366 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"}, 367 {"Left Mixer", "Right Playback Switch", "Right DAC"}, 368 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"}, 369 370 /* right mixer */ 371 {"Right Mixer", "Left Playback Switch", "Left DAC"}, 372 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"}, 373 {"Right Mixer", "Playback Switch", "Right DAC"}, 374 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"}, 375 376 /* left out 1 */ 377 {"Left Out 1", NULL, "Left Mixer"}, 378 {"LOUT1", NULL, "Left Out 1"}, 379 380 /* left out 2 */ 381 {"Left Out 2", NULL, "Left Mixer"}, 382 {"LOUT2", NULL, "Left Out 2"}, 383 384 /* right out 1 */ 385 {"Right Out 1", NULL, "Right Mixer"}, 386 {"ROUT1", NULL, "Right Out 1"}, 387 388 /* right out 2 */ 389 {"Right Out 2", NULL, "Right Mixer"}, 390 {"ROUT2", NULL, "Right Out 2"}, 391 392 /* mono mixer */ 393 {"Mono Mixer", "Left Playback Switch", "Left DAC"}, 394 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"}, 395 {"Mono Mixer", "Right Playback Switch", "Right DAC"}, 396 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"}, 397 398 /* mono out */ 399 {"Mono Out 1", NULL, "Mono Mixer"}, 400 {"MONO1", NULL, "Mono Out 1"}, 401 402 /* out 3 */ 403 {"Out3 Mux", "VREF", "VREF"}, 404 {"Out3 Mux", "ROUT1 + Vol", "ROUT1"}, 405 {"Out3 Mux", "ROUT1", "Right Mixer"}, 406 {"Out3 Mux", "MonoOut", "MONO1"}, 407 {"Out 3", NULL, "Out3 Mux"}, 408 {"OUT3", NULL, "Out 3"}, 409 410 /* Left Line Mux */ 411 {"Left Line Mux", "Line 1", "LINPUT1"}, 412 {"Left Line Mux", "Line 2", "LINPUT2"}, 413 {"Left Line Mux", "Line 3", "LINPUT3"}, 414 {"Left Line Mux", "PGA", "Left PGA Mux"}, 415 {"Left Line Mux", "Differential", "Differential Mux"}, 416 417 /* Right Line Mux */ 418 {"Right Line Mux", "Line 1", "RINPUT1"}, 419 {"Right Line Mux", "Line 2", "RINPUT2"}, 420 {"Right Line Mux", "Line 3", "RINPUT3"}, 421 {"Right Line Mux", "PGA", "Right PGA Mux"}, 422 {"Right Line Mux", "Differential", "Differential Mux"}, 423 424 /* Left PGA Mux */ 425 {"Left PGA Mux", "Line 1", "LINPUT1"}, 426 {"Left PGA Mux", "Line 2", "LINPUT2"}, 427 {"Left PGA Mux", "Line 3", "LINPUT3"}, 428 {"Left PGA Mux", "Differential", "Differential Mux"}, 429 430 /* Right PGA Mux */ 431 {"Right PGA Mux", "Line 1", "RINPUT1"}, 432 {"Right PGA Mux", "Line 2", "RINPUT2"}, 433 {"Right PGA Mux", "Line 3", "RINPUT3"}, 434 {"Right PGA Mux", "Differential", "Differential Mux"}, 435 436 /* Differential Mux */ 437 {"Differential Mux", "Line 1", "LINPUT1"}, 438 {"Differential Mux", "Line 1", "RINPUT1"}, 439 {"Differential Mux", "Line 2", "LINPUT2"}, 440 {"Differential Mux", "Line 2", "RINPUT2"}, 441 442 /* Left ADC Mux */ 443 {"Left ADC Mux", "Stereo", "Left PGA Mux"}, 444 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"}, 445 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"}, 446 447 /* Right ADC Mux */ 448 {"Right ADC Mux", "Stereo", "Right PGA Mux"}, 449 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"}, 450 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"}, 451 452 /* ADC */ 453 {"Left ADC", NULL, "Left ADC Mux"}, 454 {"Right ADC", NULL, "Right ADC Mux"}, 455 }; 456 457 static int wm8750_add_widgets(struct snd_soc_codec *codec) 458 { 459 snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets, 460 ARRAY_SIZE(wm8750_dapm_widgets)); 461 462 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 463 464 snd_soc_dapm_new_widgets(codec); 465 return 0; 466 } 467 468 struct _coeff_div { 469 u32 mclk; 470 u32 rate; 471 u16 fs; 472 u8 sr:5; 473 u8 usb:1; 474 }; 475 476 /* codec hifi mclk clock divider coefficients */ 477 static const struct _coeff_div coeff_div[] = { 478 /* 8k */ 479 {12288000, 8000, 1536, 0x6, 0x0}, 480 {11289600, 8000, 1408, 0x16, 0x0}, 481 {18432000, 8000, 2304, 0x7, 0x0}, 482 {16934400, 8000, 2112, 0x17, 0x0}, 483 {12000000, 8000, 1500, 0x6, 0x1}, 484 485 /* 11.025k */ 486 {11289600, 11025, 1024, 0x18, 0x0}, 487 {16934400, 11025, 1536, 0x19, 0x0}, 488 {12000000, 11025, 1088, 0x19, 0x1}, 489 490 /* 16k */ 491 {12288000, 16000, 768, 0xa, 0x0}, 492 {18432000, 16000, 1152, 0xb, 0x0}, 493 {12000000, 16000, 750, 0xa, 0x1}, 494 495 /* 22.05k */ 496 {11289600, 22050, 512, 0x1a, 0x0}, 497 {16934400, 22050, 768, 0x1b, 0x0}, 498 {12000000, 22050, 544, 0x1b, 0x1}, 499 500 /* 32k */ 501 {12288000, 32000, 384, 0xc, 0x0}, 502 {18432000, 32000, 576, 0xd, 0x0}, 503 {12000000, 32000, 375, 0xa, 0x1}, 504 505 /* 44.1k */ 506 {11289600, 44100, 256, 0x10, 0x0}, 507 {16934400, 44100, 384, 0x11, 0x0}, 508 {12000000, 44100, 272, 0x11, 0x1}, 509 510 /* 48k */ 511 {12288000, 48000, 256, 0x0, 0x0}, 512 {18432000, 48000, 384, 0x1, 0x0}, 513 {12000000, 48000, 250, 0x0, 0x1}, 514 515 /* 88.2k */ 516 {11289600, 88200, 128, 0x1e, 0x0}, 517 {16934400, 88200, 192, 0x1f, 0x0}, 518 {12000000, 88200, 136, 0x1f, 0x1}, 519 520 /* 96k */ 521 {12288000, 96000, 128, 0xe, 0x0}, 522 {18432000, 96000, 192, 0xf, 0x0}, 523 {12000000, 96000, 125, 0xe, 0x1}, 524 }; 525 526 static inline int get_coeff(int mclk, int rate) 527 { 528 int i; 529 530 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { 531 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) 532 return i; 533 } 534 535 printk(KERN_ERR "wm8750: could not get coeff for mclk %d @ rate %d\n", 536 mclk, rate); 537 return -EINVAL; 538 } 539 540 static int wm8750_set_dai_sysclk(struct snd_soc_dai *codec_dai, 541 int clk_id, unsigned int freq, int dir) 542 { 543 struct snd_soc_codec *codec = codec_dai->codec; 544 struct wm8750_priv *wm8750 = codec->private_data; 545 546 switch (freq) { 547 case 11289600: 548 case 12000000: 549 case 12288000: 550 case 16934400: 551 case 18432000: 552 wm8750->sysclk = freq; 553 return 0; 554 } 555 return -EINVAL; 556 } 557 558 static int wm8750_set_dai_fmt(struct snd_soc_dai *codec_dai, 559 unsigned int fmt) 560 { 561 struct snd_soc_codec *codec = codec_dai->codec; 562 u16 iface = 0; 563 564 /* set master/slave audio interface */ 565 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 566 case SND_SOC_DAIFMT_CBM_CFM: 567 iface = 0x0040; 568 break; 569 case SND_SOC_DAIFMT_CBS_CFS: 570 break; 571 default: 572 return -EINVAL; 573 } 574 575 /* interface format */ 576 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 577 case SND_SOC_DAIFMT_I2S: 578 iface |= 0x0002; 579 break; 580 case SND_SOC_DAIFMT_RIGHT_J: 581 break; 582 case SND_SOC_DAIFMT_LEFT_J: 583 iface |= 0x0001; 584 break; 585 case SND_SOC_DAIFMT_DSP_A: 586 iface |= 0x0003; 587 break; 588 case SND_SOC_DAIFMT_DSP_B: 589 iface |= 0x0013; 590 break; 591 default: 592 return -EINVAL; 593 } 594 595 /* clock inversion */ 596 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 597 case SND_SOC_DAIFMT_NB_NF: 598 break; 599 case SND_SOC_DAIFMT_IB_IF: 600 iface |= 0x0090; 601 break; 602 case SND_SOC_DAIFMT_IB_NF: 603 iface |= 0x0080; 604 break; 605 case SND_SOC_DAIFMT_NB_IF: 606 iface |= 0x0010; 607 break; 608 default: 609 return -EINVAL; 610 } 611 612 wm8750_write(codec, WM8750_IFACE, iface); 613 return 0; 614 } 615 616 static int wm8750_pcm_hw_params(struct snd_pcm_substream *substream, 617 struct snd_pcm_hw_params *params) 618 { 619 struct snd_soc_pcm_runtime *rtd = substream->private_data; 620 struct snd_soc_device *socdev = rtd->socdev; 621 struct snd_soc_codec *codec = socdev->codec; 622 struct wm8750_priv *wm8750 = codec->private_data; 623 u16 iface = wm8750_read_reg_cache(codec, WM8750_IFACE) & 0x1f3; 624 u16 srate = wm8750_read_reg_cache(codec, WM8750_SRATE) & 0x1c0; 625 int coeff = get_coeff(wm8750->sysclk, params_rate(params)); 626 627 /* bit size */ 628 switch (params_format(params)) { 629 case SNDRV_PCM_FORMAT_S16_LE: 630 break; 631 case SNDRV_PCM_FORMAT_S20_3LE: 632 iface |= 0x0004; 633 break; 634 case SNDRV_PCM_FORMAT_S24_LE: 635 iface |= 0x0008; 636 break; 637 case SNDRV_PCM_FORMAT_S32_LE: 638 iface |= 0x000c; 639 break; 640 } 641 642 /* set iface & srate */ 643 wm8750_write(codec, WM8750_IFACE, iface); 644 if (coeff >= 0) 645 wm8750_write(codec, WM8750_SRATE, srate | 646 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb); 647 648 return 0; 649 } 650 651 static int wm8750_mute(struct snd_soc_dai *dai, int mute) 652 { 653 struct snd_soc_codec *codec = dai->codec; 654 u16 mute_reg = wm8750_read_reg_cache(codec, WM8750_ADCDAC) & 0xfff7; 655 656 if (mute) 657 wm8750_write(codec, WM8750_ADCDAC, mute_reg | 0x8); 658 else 659 wm8750_write(codec, WM8750_ADCDAC, mute_reg); 660 return 0; 661 } 662 663 static int wm8750_set_bias_level(struct snd_soc_codec *codec, 664 enum snd_soc_bias_level level) 665 { 666 u16 pwr_reg = wm8750_read_reg_cache(codec, WM8750_PWR1) & 0xfe3e; 667 668 switch (level) { 669 case SND_SOC_BIAS_ON: 670 /* set vmid to 50k and unmute dac */ 671 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x00c0); 672 break; 673 case SND_SOC_BIAS_PREPARE: 674 /* set vmid to 5k for quick power up */ 675 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x01c1); 676 break; 677 case SND_SOC_BIAS_STANDBY: 678 /* mute dac and set vmid to 500k, enable VREF */ 679 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x0141); 680 break; 681 case SND_SOC_BIAS_OFF: 682 wm8750_write(codec, WM8750_PWR1, 0x0001); 683 break; 684 } 685 codec->bias_level = level; 686 return 0; 687 } 688 689 #define WM8750_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 690 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ 691 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) 692 693 #define WM8750_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 694 SNDRV_PCM_FMTBIT_S24_LE) 695 696 struct snd_soc_dai wm8750_dai = { 697 .name = "WM8750", 698 .playback = { 699 .stream_name = "Playback", 700 .channels_min = 1, 701 .channels_max = 2, 702 .rates = WM8750_RATES, 703 .formats = WM8750_FORMATS,}, 704 .capture = { 705 .stream_name = "Capture", 706 .channels_min = 1, 707 .channels_max = 2, 708 .rates = WM8750_RATES, 709 .formats = WM8750_FORMATS,}, 710 .ops = { 711 .hw_params = wm8750_pcm_hw_params, 712 }, 713 .dai_ops = { 714 .digital_mute = wm8750_mute, 715 .set_fmt = wm8750_set_dai_fmt, 716 .set_sysclk = wm8750_set_dai_sysclk, 717 }, 718 }; 719 EXPORT_SYMBOL_GPL(wm8750_dai); 720 721 static void wm8750_work(struct work_struct *work) 722 { 723 struct snd_soc_codec *codec = 724 container_of(work, struct snd_soc_codec, delayed_work.work); 725 wm8750_set_bias_level(codec, codec->bias_level); 726 } 727 728 static int wm8750_suspend(struct platform_device *pdev, pm_message_t state) 729 { 730 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 731 struct snd_soc_codec *codec = socdev->codec; 732 733 wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF); 734 return 0; 735 } 736 737 static int wm8750_resume(struct platform_device *pdev) 738 { 739 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 740 struct snd_soc_codec *codec = socdev->codec; 741 int i; 742 u8 data[2]; 743 u16 *cache = codec->reg_cache; 744 745 /* Sync reg_cache with the hardware */ 746 for (i = 0; i < ARRAY_SIZE(wm8750_reg); i++) { 747 if (i == WM8750_RESET) 748 continue; 749 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 750 data[1] = cache[i] & 0x00ff; 751 codec->hw_write(codec->control_data, data, 2); 752 } 753 754 wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 755 756 /* charge wm8750 caps */ 757 if (codec->suspend_bias_level == SND_SOC_BIAS_ON) { 758 wm8750_set_bias_level(codec, SND_SOC_BIAS_PREPARE); 759 codec->bias_level = SND_SOC_BIAS_ON; 760 schedule_delayed_work(&codec->delayed_work, 761 msecs_to_jiffies(1000)); 762 } 763 764 return 0; 765 } 766 767 /* 768 * initialise the WM8750 driver 769 * register the mixer and dsp interfaces with the kernel 770 */ 771 static int wm8750_init(struct snd_soc_device *socdev) 772 { 773 struct snd_soc_codec *codec = socdev->codec; 774 int reg, ret = 0; 775 776 codec->name = "WM8750"; 777 codec->owner = THIS_MODULE; 778 codec->read = wm8750_read_reg_cache; 779 codec->write = wm8750_write; 780 codec->set_bias_level = wm8750_set_bias_level; 781 codec->dai = &wm8750_dai; 782 codec->num_dai = 1; 783 codec->reg_cache_size = ARRAY_SIZE(wm8750_reg); 784 codec->reg_cache = kmemdup(wm8750_reg, sizeof(wm8750_reg), GFP_KERNEL); 785 if (codec->reg_cache == NULL) 786 return -ENOMEM; 787 788 wm8750_reset(codec); 789 790 /* register pcms */ 791 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 792 if (ret < 0) { 793 printk(KERN_ERR "wm8750: failed to create pcms\n"); 794 goto pcm_err; 795 } 796 797 /* charge output caps */ 798 wm8750_set_bias_level(codec, SND_SOC_BIAS_PREPARE); 799 codec->bias_level = SND_SOC_BIAS_STANDBY; 800 schedule_delayed_work(&codec->delayed_work, msecs_to_jiffies(1000)); 801 802 /* set the update bits */ 803 reg = wm8750_read_reg_cache(codec, WM8750_LDAC); 804 wm8750_write(codec, WM8750_LDAC, reg | 0x0100); 805 reg = wm8750_read_reg_cache(codec, WM8750_RDAC); 806 wm8750_write(codec, WM8750_RDAC, reg | 0x0100); 807 reg = wm8750_read_reg_cache(codec, WM8750_LOUT1V); 808 wm8750_write(codec, WM8750_LOUT1V, reg | 0x0100); 809 reg = wm8750_read_reg_cache(codec, WM8750_ROUT1V); 810 wm8750_write(codec, WM8750_ROUT1V, reg | 0x0100); 811 reg = wm8750_read_reg_cache(codec, WM8750_LOUT2V); 812 wm8750_write(codec, WM8750_LOUT2V, reg | 0x0100); 813 reg = wm8750_read_reg_cache(codec, WM8750_ROUT2V); 814 wm8750_write(codec, WM8750_ROUT2V, reg | 0x0100); 815 reg = wm8750_read_reg_cache(codec, WM8750_LINVOL); 816 wm8750_write(codec, WM8750_LINVOL, reg | 0x0100); 817 reg = wm8750_read_reg_cache(codec, WM8750_RINVOL); 818 wm8750_write(codec, WM8750_RINVOL, reg | 0x0100); 819 820 wm8750_add_controls(codec); 821 wm8750_add_widgets(codec); 822 ret = snd_soc_register_card(socdev); 823 if (ret < 0) { 824 printk(KERN_ERR "wm8750: failed to register card\n"); 825 goto card_err; 826 } 827 return ret; 828 829 card_err: 830 snd_soc_free_pcms(socdev); 831 snd_soc_dapm_free(socdev); 832 pcm_err: 833 kfree(codec->reg_cache); 834 return ret; 835 } 836 837 /* If the i2c layer weren't so broken, we could pass this kind of data 838 around */ 839 static struct snd_soc_device *wm8750_socdev; 840 841 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 842 843 /* 844 * WM8750 2 wire address is determined by GPIO5 845 * state during powerup. 846 * low = 0x1a 847 * high = 0x1b 848 */ 849 850 static int wm8750_i2c_probe(struct i2c_client *i2c, 851 const struct i2c_device_id *id) 852 { 853 struct snd_soc_device *socdev = wm8750_socdev; 854 struct snd_soc_codec *codec = socdev->codec; 855 int ret; 856 857 i2c_set_clientdata(i2c, codec); 858 codec->control_data = i2c; 859 860 ret = wm8750_init(socdev); 861 if (ret < 0) 862 pr_err("failed to initialise WM8750\n"); 863 864 return ret; 865 } 866 867 static int wm8750_i2c_remove(struct i2c_client *client) 868 { 869 struct snd_soc_codec *codec = i2c_get_clientdata(client); 870 kfree(codec->reg_cache); 871 return 0; 872 } 873 874 static const struct i2c_device_id wm8750_i2c_id[] = { 875 { "wm8750", 0 }, 876 { } 877 }; 878 MODULE_DEVICE_TABLE(i2c, wm8750_i2c_id); 879 880 static struct i2c_driver wm8750_i2c_driver = { 881 .driver = { 882 .name = "WM8750 I2C Codec", 883 .owner = THIS_MODULE, 884 }, 885 .probe = wm8750_i2c_probe, 886 .remove = wm8750_i2c_remove, 887 .id_table = wm8750_i2c_id, 888 }; 889 890 static int wm8750_add_i2c_device(struct platform_device *pdev, 891 const struct wm8750_setup_data *setup) 892 { 893 struct i2c_board_info info; 894 struct i2c_adapter *adapter; 895 struct i2c_client *client; 896 int ret; 897 898 ret = i2c_add_driver(&wm8750_i2c_driver); 899 if (ret != 0) { 900 dev_err(&pdev->dev, "can't add i2c driver\n"); 901 return ret; 902 } 903 904 memset(&info, 0, sizeof(struct i2c_board_info)); 905 info.addr = setup->i2c_address; 906 strlcpy(info.type, "wm8750", I2C_NAME_SIZE); 907 908 adapter = i2c_get_adapter(setup->i2c_bus); 909 if (!adapter) { 910 dev_err(&pdev->dev, "can't get i2c adapter %d\n", 911 setup->i2c_bus); 912 goto err_driver; 913 } 914 915 client = i2c_new_device(adapter, &info); 916 i2c_put_adapter(adapter); 917 if (!client) { 918 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", 919 (unsigned int)info.addr); 920 goto err_driver; 921 } 922 923 return 0; 924 925 err_driver: 926 i2c_del_driver(&wm8750_i2c_driver); 927 return -ENODEV; 928 } 929 #endif 930 931 #if defined(CONFIG_SPI_MASTER) 932 static int __devinit wm8750_spi_probe(struct spi_device *spi) 933 { 934 struct snd_soc_device *socdev = wm8750_socdev; 935 struct snd_soc_codec *codec = socdev->codec; 936 int ret; 937 938 codec->control_data = spi; 939 940 ret = wm8750_init(socdev); 941 if (ret < 0) 942 dev_err(&spi->dev, "failed to initialise WM8750\n"); 943 944 return ret; 945 } 946 947 static int __devexit wm8750_spi_remove(struct spi_device *spi) 948 { 949 return 0; 950 } 951 952 static struct spi_driver wm8750_spi_driver = { 953 .driver = { 954 .name = "wm8750", 955 .bus = &spi_bus_type, 956 .owner = THIS_MODULE, 957 }, 958 .probe = wm8750_spi_probe, 959 .remove = __devexit_p(wm8750_spi_remove), 960 }; 961 962 static int wm8750_spi_write(struct spi_device *spi, const char *data, int len) 963 { 964 struct spi_transfer t; 965 struct spi_message m; 966 u8 msg[2]; 967 968 if (len <= 0) 969 return 0; 970 971 msg[0] = data[0]; 972 msg[1] = data[1]; 973 974 spi_message_init(&m); 975 memset(&t, 0, (sizeof t)); 976 977 t.tx_buf = &msg[0]; 978 t.len = len; 979 980 spi_message_add_tail(&t, &m); 981 spi_sync(spi, &m); 982 983 return len; 984 } 985 #endif 986 987 static int wm8750_probe(struct platform_device *pdev) 988 { 989 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 990 struct wm8750_setup_data *setup = socdev->codec_data; 991 struct snd_soc_codec *codec; 992 struct wm8750_priv *wm8750; 993 int ret; 994 995 pr_info("WM8750 Audio Codec %s", WM8750_VERSION); 996 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 997 if (codec == NULL) 998 return -ENOMEM; 999 1000 wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL); 1001 if (wm8750 == NULL) { 1002 kfree(codec); 1003 return -ENOMEM; 1004 } 1005 1006 codec->private_data = wm8750; 1007 socdev->codec = codec; 1008 mutex_init(&codec->mutex); 1009 INIT_LIST_HEAD(&codec->dapm_widgets); 1010 INIT_LIST_HEAD(&codec->dapm_paths); 1011 wm8750_socdev = socdev; 1012 INIT_DELAYED_WORK(&codec->delayed_work, wm8750_work); 1013 1014 ret = -ENODEV; 1015 1016 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 1017 if (setup->i2c_address) { 1018 codec->hw_write = (hw_write_t)i2c_master_send; 1019 ret = wm8750_add_i2c_device(pdev, setup); 1020 } 1021 #endif 1022 #if defined(CONFIG_SPI_MASTER) 1023 if (setup->spi) { 1024 codec->hw_write = (hw_write_t)wm8750_spi_write; 1025 ret = spi_register_driver(&wm8750_spi_driver); 1026 if (ret != 0) 1027 printk(KERN_ERR "can't add spi driver"); 1028 } 1029 #endif 1030 1031 if (ret != 0) { 1032 kfree(codec->private_data); 1033 kfree(codec); 1034 } 1035 return ret; 1036 } 1037 1038 /* 1039 * This function forces any delayed work to be queued and run. 1040 */ 1041 static int run_delayed_work(struct delayed_work *dwork) 1042 { 1043 int ret; 1044 1045 /* cancel any work waiting to be queued. */ 1046 ret = cancel_delayed_work(dwork); 1047 1048 /* if there was any work waiting then we run it now and 1049 * wait for it's completion */ 1050 if (ret) { 1051 schedule_delayed_work(dwork, 0); 1052 flush_scheduled_work(); 1053 } 1054 return ret; 1055 } 1056 1057 /* power down chip */ 1058 static int wm8750_remove(struct platform_device *pdev) 1059 { 1060 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 1061 struct snd_soc_codec *codec = socdev->codec; 1062 1063 if (codec->control_data) 1064 wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF); 1065 run_delayed_work(&codec->delayed_work); 1066 snd_soc_free_pcms(socdev); 1067 snd_soc_dapm_free(socdev); 1068 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 1069 i2c_unregister_device(codec->control_data); 1070 i2c_del_driver(&wm8750_i2c_driver); 1071 #endif 1072 #if defined(CONFIG_SPI_MASTER) 1073 spi_unregister_driver(&wm8750_spi_driver); 1074 #endif 1075 kfree(codec->private_data); 1076 kfree(codec); 1077 1078 return 0; 1079 } 1080 1081 struct snd_soc_codec_device soc_codec_dev_wm8750 = { 1082 .probe = wm8750_probe, 1083 .remove = wm8750_remove, 1084 .suspend = wm8750_suspend, 1085 .resume = wm8750_resume, 1086 }; 1087 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8750); 1088 1089 MODULE_DESCRIPTION("ASoC WM8750 driver"); 1090 MODULE_AUTHOR("Liam Girdwood"); 1091 MODULE_LICENSE("GPL"); 1092