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 <linux/slab.h> 24 #include <sound/core.h> 25 #include <sound/pcm.h> 26 #include <sound/pcm_params.h> 27 #include <sound/soc.h> 28 #include <sound/soc-dapm.h> 29 #include <sound/initval.h> 30 31 #include "wm8750.h" 32 33 /* 34 * wm8750 register cache 35 * We can't read the WM8750 register space when we 36 * are using 2 wire for device control, so we cache them instead. 37 */ 38 static const u16 wm8750_reg[] = { 39 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */ 40 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */ 41 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */ 42 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */ 43 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */ 44 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */ 45 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */ 46 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */ 47 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */ 48 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */ 49 0x0079, 0x0079, 0x0079, /* 40 */ 50 }; 51 52 /* codec private data */ 53 struct wm8750_priv { 54 unsigned int sysclk; 55 struct snd_soc_codec codec; 56 u16 reg_cache[ARRAY_SIZE(wm8750_reg)]; 57 }; 58 59 #define wm8750_reset(c) snd_soc_write(c, WM8750_RESET, 0) 60 61 /* 62 * WM8750 Controls 63 */ 64 static const char *wm8750_bass[] = {"Linear Control", "Adaptive Boost"}; 65 static const char *wm8750_bass_filter[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" }; 66 static const char *wm8750_treble[] = {"8kHz", "4kHz"}; 67 static const char *wm8750_3d_lc[] = {"200Hz", "500Hz"}; 68 static const char *wm8750_3d_uc[] = {"2.2kHz", "1.5kHz"}; 69 static const char *wm8750_3d_func[] = {"Capture", "Playback"}; 70 static const char *wm8750_alc_func[] = {"Off", "Right", "Left", "Stereo"}; 71 static const char *wm8750_ng_type[] = {"Constant PGA Gain", 72 "Mute ADC Output"}; 73 static const char *wm8750_line_mux[] = {"Line 1", "Line 2", "Line 3", "PGA", 74 "Differential"}; 75 static const char *wm8750_pga_sel[] = {"Line 1", "Line 2", "Line 3", 76 "Differential"}; 77 static const char *wm8750_out3[] = {"VREF", "ROUT1 + Vol", "MonoOut", 78 "ROUT1"}; 79 static const char *wm8750_diff_sel[] = {"Line 1", "Line 2"}; 80 static const char *wm8750_adcpol[] = {"Normal", "L Invert", "R Invert", 81 "L + R Invert"}; 82 static const char *wm8750_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"}; 83 static const char *wm8750_mono_mux[] = {"Stereo", "Mono (Left)", 84 "Mono (Right)", "Digital Mono"}; 85 86 static const struct soc_enum wm8750_enum[] = { 87 SOC_ENUM_SINGLE(WM8750_BASS, 7, 2, wm8750_bass), 88 SOC_ENUM_SINGLE(WM8750_BASS, 6, 2, wm8750_bass_filter), 89 SOC_ENUM_SINGLE(WM8750_TREBLE, 6, 2, wm8750_treble), 90 SOC_ENUM_SINGLE(WM8750_3D, 5, 2, wm8750_3d_lc), 91 SOC_ENUM_SINGLE(WM8750_3D, 6, 2, wm8750_3d_uc), 92 SOC_ENUM_SINGLE(WM8750_3D, 7, 2, wm8750_3d_func), 93 SOC_ENUM_SINGLE(WM8750_ALC1, 7, 4, wm8750_alc_func), 94 SOC_ENUM_SINGLE(WM8750_NGATE, 1, 2, wm8750_ng_type), 95 SOC_ENUM_SINGLE(WM8750_LOUTM1, 0, 5, wm8750_line_mux), 96 SOC_ENUM_SINGLE(WM8750_ROUTM1, 0, 5, wm8750_line_mux), 97 SOC_ENUM_SINGLE(WM8750_LADCIN, 6, 4, wm8750_pga_sel), /* 10 */ 98 SOC_ENUM_SINGLE(WM8750_RADCIN, 6, 4, wm8750_pga_sel), 99 SOC_ENUM_SINGLE(WM8750_ADCTL2, 7, 4, wm8750_out3), 100 SOC_ENUM_SINGLE(WM8750_ADCIN, 8, 2, wm8750_diff_sel), 101 SOC_ENUM_SINGLE(WM8750_ADCDAC, 5, 4, wm8750_adcpol), 102 SOC_ENUM_SINGLE(WM8750_ADCDAC, 1, 4, wm8750_deemph), 103 SOC_ENUM_SINGLE(WM8750_ADCIN, 6, 4, wm8750_mono_mux), /* 16 */ 104 105 }; 106 107 static const struct snd_kcontrol_new wm8750_snd_controls[] = { 108 109 SOC_DOUBLE_R("Capture Volume", WM8750_LINVOL, WM8750_RINVOL, 0, 63, 0), 110 SOC_DOUBLE_R("Capture ZC Switch", WM8750_LINVOL, WM8750_RINVOL, 6, 1, 0), 111 SOC_DOUBLE_R("Capture Switch", WM8750_LINVOL, WM8750_RINVOL, 7, 1, 1), 112 113 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8750_LOUT1V, 114 WM8750_ROUT1V, 7, 1, 0), 115 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8750_LOUT2V, 116 WM8750_ROUT2V, 7, 1, 0), 117 118 SOC_ENUM("Playback De-emphasis", wm8750_enum[15]), 119 120 SOC_ENUM("Capture Polarity", wm8750_enum[14]), 121 SOC_SINGLE("Playback 6dB Attenuate", WM8750_ADCDAC, 7, 1, 0), 122 SOC_SINGLE("Capture 6dB Attenuate", WM8750_ADCDAC, 8, 1, 0), 123 124 SOC_DOUBLE_R("PCM Volume", WM8750_LDAC, WM8750_RDAC, 0, 255, 0), 125 126 SOC_ENUM("Bass Boost", wm8750_enum[0]), 127 SOC_ENUM("Bass Filter", wm8750_enum[1]), 128 SOC_SINGLE("Bass Volume", WM8750_BASS, 0, 15, 1), 129 130 SOC_SINGLE("Treble Volume", WM8750_TREBLE, 0, 15, 1), 131 SOC_ENUM("Treble Cut-off", wm8750_enum[2]), 132 133 SOC_SINGLE("3D Switch", WM8750_3D, 0, 1, 0), 134 SOC_SINGLE("3D Volume", WM8750_3D, 1, 15, 0), 135 SOC_ENUM("3D Lower Cut-off", wm8750_enum[3]), 136 SOC_ENUM("3D Upper Cut-off", wm8750_enum[4]), 137 SOC_ENUM("3D Mode", wm8750_enum[5]), 138 139 SOC_SINGLE("ALC Capture Target Volume", WM8750_ALC1, 0, 7, 0), 140 SOC_SINGLE("ALC Capture Max Volume", WM8750_ALC1, 4, 7, 0), 141 SOC_ENUM("ALC Capture Function", wm8750_enum[6]), 142 SOC_SINGLE("ALC Capture ZC Switch", WM8750_ALC2, 7, 1, 0), 143 SOC_SINGLE("ALC Capture Hold Time", WM8750_ALC2, 0, 15, 0), 144 SOC_SINGLE("ALC Capture Decay Time", WM8750_ALC3, 4, 15, 0), 145 SOC_SINGLE("ALC Capture Attack Time", WM8750_ALC3, 0, 15, 0), 146 SOC_SINGLE("ALC Capture NG Threshold", WM8750_NGATE, 3, 31, 0), 147 SOC_ENUM("ALC Capture NG Type", wm8750_enum[4]), 148 SOC_SINGLE("ALC Capture NG Switch", WM8750_NGATE, 0, 1, 0), 149 150 SOC_SINGLE("Left ADC Capture Volume", WM8750_LADC, 0, 255, 0), 151 SOC_SINGLE("Right ADC Capture Volume", WM8750_RADC, 0, 255, 0), 152 153 SOC_SINGLE("ZC Timeout Switch", WM8750_ADCTL1, 0, 1, 0), 154 SOC_SINGLE("Playback Invert Switch", WM8750_ADCTL1, 1, 1, 0), 155 156 SOC_SINGLE("Right Speaker Playback Invert Switch", WM8750_ADCTL2, 4, 1, 0), 157 158 /* Unimplemented */ 159 /* ADCDAC Bit 0 - ADCHPD */ 160 /* ADCDAC Bit 4 - HPOR */ 161 /* ADCTL1 Bit 2,3 - DATSEL */ 162 /* ADCTL1 Bit 4,5 - DMONOMIX */ 163 /* ADCTL1 Bit 6,7 - VSEL */ 164 /* ADCTL2 Bit 2 - LRCM */ 165 /* ADCTL2 Bit 3 - TRI */ 166 /* ADCTL3 Bit 5 - HPFLREN */ 167 /* ADCTL3 Bit 6 - VROI */ 168 /* ADCTL3 Bit 7,8 - ADCLRM */ 169 /* ADCIN Bit 4 - LDCM */ 170 /* ADCIN Bit 5 - RDCM */ 171 172 SOC_DOUBLE_R("Mic Boost", WM8750_LADCIN, WM8750_RADCIN, 4, 3, 0), 173 174 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8750_LOUTM1, 175 WM8750_LOUTM2, 4, 7, 1), 176 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8750_ROUTM1, 177 WM8750_ROUTM2, 4, 7, 1), 178 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8750_MOUTM1, 179 WM8750_MOUTM2, 4, 7, 1), 180 181 SOC_SINGLE("Mono Playback ZC Switch", WM8750_MOUTV, 7, 1, 0), 182 183 SOC_DOUBLE_R("Headphone Playback Volume", WM8750_LOUT1V, WM8750_ROUT1V, 184 0, 127, 0), 185 SOC_DOUBLE_R("Speaker Playback Volume", WM8750_LOUT2V, WM8750_ROUT2V, 186 0, 127, 0), 187 188 SOC_SINGLE("Mono Playback Volume", WM8750_MOUTV, 0, 127, 0), 189 190 }; 191 192 /* 193 * DAPM Controls 194 */ 195 196 /* Left Mixer */ 197 static const struct snd_kcontrol_new wm8750_left_mixer_controls[] = { 198 SOC_DAPM_SINGLE("Playback Switch", WM8750_LOUTM1, 8, 1, 0), 199 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_LOUTM1, 7, 1, 0), 200 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_LOUTM2, 8, 1, 0), 201 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_LOUTM2, 7, 1, 0), 202 }; 203 204 /* Right Mixer */ 205 static const struct snd_kcontrol_new wm8750_right_mixer_controls[] = { 206 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_ROUTM1, 8, 1, 0), 207 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_ROUTM1, 7, 1, 0), 208 SOC_DAPM_SINGLE("Playback Switch", WM8750_ROUTM2, 8, 1, 0), 209 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_ROUTM2, 7, 1, 0), 210 }; 211 212 /* Mono Mixer */ 213 static const struct snd_kcontrol_new wm8750_mono_mixer_controls[] = { 214 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_MOUTM1, 8, 1, 0), 215 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_MOUTM1, 7, 1, 0), 216 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_MOUTM2, 8, 1, 0), 217 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_MOUTM2, 7, 1, 0), 218 }; 219 220 /* Left Line Mux */ 221 static const struct snd_kcontrol_new wm8750_left_line_controls = 222 SOC_DAPM_ENUM("Route", wm8750_enum[8]); 223 224 /* Right Line Mux */ 225 static const struct snd_kcontrol_new wm8750_right_line_controls = 226 SOC_DAPM_ENUM("Route", wm8750_enum[9]); 227 228 /* Left PGA Mux */ 229 static const struct snd_kcontrol_new wm8750_left_pga_controls = 230 SOC_DAPM_ENUM("Route", wm8750_enum[10]); 231 232 /* Right PGA Mux */ 233 static const struct snd_kcontrol_new wm8750_right_pga_controls = 234 SOC_DAPM_ENUM("Route", wm8750_enum[11]); 235 236 /* Out 3 Mux */ 237 static const struct snd_kcontrol_new wm8750_out3_controls = 238 SOC_DAPM_ENUM("Route", wm8750_enum[12]); 239 240 /* Differential Mux */ 241 static const struct snd_kcontrol_new wm8750_diffmux_controls = 242 SOC_DAPM_ENUM("Route", wm8750_enum[13]); 243 244 /* Mono ADC Mux */ 245 static const struct snd_kcontrol_new wm8750_monomux_controls = 246 SOC_DAPM_ENUM("Route", wm8750_enum[16]); 247 248 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = { 249 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0, 250 &wm8750_left_mixer_controls[0], 251 ARRAY_SIZE(wm8750_left_mixer_controls)), 252 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0, 253 &wm8750_right_mixer_controls[0], 254 ARRAY_SIZE(wm8750_right_mixer_controls)), 255 SND_SOC_DAPM_MIXER("Mono Mixer", WM8750_PWR2, 2, 0, 256 &wm8750_mono_mixer_controls[0], 257 ARRAY_SIZE(wm8750_mono_mixer_controls)), 258 259 SND_SOC_DAPM_PGA("Right Out 2", WM8750_PWR2, 3, 0, NULL, 0), 260 SND_SOC_DAPM_PGA("Left Out 2", WM8750_PWR2, 4, 0, NULL, 0), 261 SND_SOC_DAPM_PGA("Right Out 1", WM8750_PWR2, 5, 0, NULL, 0), 262 SND_SOC_DAPM_PGA("Left Out 1", WM8750_PWR2, 6, 0, NULL, 0), 263 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8750_PWR2, 7, 0), 264 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8750_PWR2, 8, 0), 265 266 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8750_PWR1, 1, 0), 267 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8750_PWR1, 2, 0), 268 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8750_PWR1, 3, 0), 269 270 SND_SOC_DAPM_MUX("Left PGA Mux", WM8750_PWR1, 5, 0, 271 &wm8750_left_pga_controls), 272 SND_SOC_DAPM_MUX("Right PGA Mux", WM8750_PWR1, 4, 0, 273 &wm8750_right_pga_controls), 274 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0, 275 &wm8750_left_line_controls), 276 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0, 277 &wm8750_right_line_controls), 278 279 SND_SOC_DAPM_MUX("Out3 Mux", SND_SOC_NOPM, 0, 0, &wm8750_out3_controls), 280 SND_SOC_DAPM_PGA("Out 3", WM8750_PWR2, 1, 0, NULL, 0), 281 SND_SOC_DAPM_PGA("Mono Out 1", WM8750_PWR2, 2, 0, NULL, 0), 282 283 SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0, 284 &wm8750_diffmux_controls), 285 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0, 286 &wm8750_monomux_controls), 287 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0, 288 &wm8750_monomux_controls), 289 290 SND_SOC_DAPM_OUTPUT("LOUT1"), 291 SND_SOC_DAPM_OUTPUT("ROUT1"), 292 SND_SOC_DAPM_OUTPUT("LOUT2"), 293 SND_SOC_DAPM_OUTPUT("ROUT2"), 294 SND_SOC_DAPM_OUTPUT("MONO1"), 295 SND_SOC_DAPM_OUTPUT("OUT3"), 296 SND_SOC_DAPM_OUTPUT("VREF"), 297 298 SND_SOC_DAPM_INPUT("LINPUT1"), 299 SND_SOC_DAPM_INPUT("LINPUT2"), 300 SND_SOC_DAPM_INPUT("LINPUT3"), 301 SND_SOC_DAPM_INPUT("RINPUT1"), 302 SND_SOC_DAPM_INPUT("RINPUT2"), 303 SND_SOC_DAPM_INPUT("RINPUT3"), 304 }; 305 306 static const struct snd_soc_dapm_route audio_map[] = { 307 /* left mixer */ 308 {"Left Mixer", "Playback Switch", "Left DAC"}, 309 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"}, 310 {"Left Mixer", "Right Playback Switch", "Right DAC"}, 311 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"}, 312 313 /* right mixer */ 314 {"Right Mixer", "Left Playback Switch", "Left DAC"}, 315 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"}, 316 {"Right Mixer", "Playback Switch", "Right DAC"}, 317 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"}, 318 319 /* left out 1 */ 320 {"Left Out 1", NULL, "Left Mixer"}, 321 {"LOUT1", NULL, "Left Out 1"}, 322 323 /* left out 2 */ 324 {"Left Out 2", NULL, "Left Mixer"}, 325 {"LOUT2", NULL, "Left Out 2"}, 326 327 /* right out 1 */ 328 {"Right Out 1", NULL, "Right Mixer"}, 329 {"ROUT1", NULL, "Right Out 1"}, 330 331 /* right out 2 */ 332 {"Right Out 2", NULL, "Right Mixer"}, 333 {"ROUT2", NULL, "Right Out 2"}, 334 335 /* mono mixer */ 336 {"Mono Mixer", "Left Playback Switch", "Left DAC"}, 337 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"}, 338 {"Mono Mixer", "Right Playback Switch", "Right DAC"}, 339 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"}, 340 341 /* mono out */ 342 {"Mono Out 1", NULL, "Mono Mixer"}, 343 {"MONO1", NULL, "Mono Out 1"}, 344 345 /* out 3 */ 346 {"Out3 Mux", "VREF", "VREF"}, 347 {"Out3 Mux", "ROUT1 + Vol", "ROUT1"}, 348 {"Out3 Mux", "ROUT1", "Right Mixer"}, 349 {"Out3 Mux", "MonoOut", "MONO1"}, 350 {"Out 3", NULL, "Out3 Mux"}, 351 {"OUT3", NULL, "Out 3"}, 352 353 /* Left Line Mux */ 354 {"Left Line Mux", "Line 1", "LINPUT1"}, 355 {"Left Line Mux", "Line 2", "LINPUT2"}, 356 {"Left Line Mux", "Line 3", "LINPUT3"}, 357 {"Left Line Mux", "PGA", "Left PGA Mux"}, 358 {"Left Line Mux", "Differential", "Differential Mux"}, 359 360 /* Right Line Mux */ 361 {"Right Line Mux", "Line 1", "RINPUT1"}, 362 {"Right Line Mux", "Line 2", "RINPUT2"}, 363 {"Right Line Mux", "Line 3", "RINPUT3"}, 364 {"Right Line Mux", "PGA", "Right PGA Mux"}, 365 {"Right Line Mux", "Differential", "Differential Mux"}, 366 367 /* Left PGA Mux */ 368 {"Left PGA Mux", "Line 1", "LINPUT1"}, 369 {"Left PGA Mux", "Line 2", "LINPUT2"}, 370 {"Left PGA Mux", "Line 3", "LINPUT3"}, 371 {"Left PGA Mux", "Differential", "Differential Mux"}, 372 373 /* Right PGA Mux */ 374 {"Right PGA Mux", "Line 1", "RINPUT1"}, 375 {"Right PGA Mux", "Line 2", "RINPUT2"}, 376 {"Right PGA Mux", "Line 3", "RINPUT3"}, 377 {"Right PGA Mux", "Differential", "Differential Mux"}, 378 379 /* Differential Mux */ 380 {"Differential Mux", "Line 1", "LINPUT1"}, 381 {"Differential Mux", "Line 1", "RINPUT1"}, 382 {"Differential Mux", "Line 2", "LINPUT2"}, 383 {"Differential Mux", "Line 2", "RINPUT2"}, 384 385 /* Left ADC Mux */ 386 {"Left ADC Mux", "Stereo", "Left PGA Mux"}, 387 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"}, 388 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"}, 389 390 /* Right ADC Mux */ 391 {"Right ADC Mux", "Stereo", "Right PGA Mux"}, 392 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"}, 393 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"}, 394 395 /* ADC */ 396 {"Left ADC", NULL, "Left ADC Mux"}, 397 {"Right ADC", NULL, "Right ADC Mux"}, 398 }; 399 400 static int wm8750_add_widgets(struct snd_soc_codec *codec) 401 { 402 snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets, 403 ARRAY_SIZE(wm8750_dapm_widgets)); 404 405 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 406 407 return 0; 408 } 409 410 struct _coeff_div { 411 u32 mclk; 412 u32 rate; 413 u16 fs; 414 u8 sr:5; 415 u8 usb:1; 416 }; 417 418 /* codec hifi mclk clock divider coefficients */ 419 static const struct _coeff_div coeff_div[] = { 420 /* 8k */ 421 {12288000, 8000, 1536, 0x6, 0x0}, 422 {11289600, 8000, 1408, 0x16, 0x0}, 423 {18432000, 8000, 2304, 0x7, 0x0}, 424 {16934400, 8000, 2112, 0x17, 0x0}, 425 {12000000, 8000, 1500, 0x6, 0x1}, 426 427 /* 11.025k */ 428 {11289600, 11025, 1024, 0x18, 0x0}, 429 {16934400, 11025, 1536, 0x19, 0x0}, 430 {12000000, 11025, 1088, 0x19, 0x1}, 431 432 /* 16k */ 433 {12288000, 16000, 768, 0xa, 0x0}, 434 {18432000, 16000, 1152, 0xb, 0x0}, 435 {12000000, 16000, 750, 0xa, 0x1}, 436 437 /* 22.05k */ 438 {11289600, 22050, 512, 0x1a, 0x0}, 439 {16934400, 22050, 768, 0x1b, 0x0}, 440 {12000000, 22050, 544, 0x1b, 0x1}, 441 442 /* 32k */ 443 {12288000, 32000, 384, 0xc, 0x0}, 444 {18432000, 32000, 576, 0xd, 0x0}, 445 {12000000, 32000, 375, 0xa, 0x1}, 446 447 /* 44.1k */ 448 {11289600, 44100, 256, 0x10, 0x0}, 449 {16934400, 44100, 384, 0x11, 0x0}, 450 {12000000, 44100, 272, 0x11, 0x1}, 451 452 /* 48k */ 453 {12288000, 48000, 256, 0x0, 0x0}, 454 {18432000, 48000, 384, 0x1, 0x0}, 455 {12000000, 48000, 250, 0x0, 0x1}, 456 457 /* 88.2k */ 458 {11289600, 88200, 128, 0x1e, 0x0}, 459 {16934400, 88200, 192, 0x1f, 0x0}, 460 {12000000, 88200, 136, 0x1f, 0x1}, 461 462 /* 96k */ 463 {12288000, 96000, 128, 0xe, 0x0}, 464 {18432000, 96000, 192, 0xf, 0x0}, 465 {12000000, 96000, 125, 0xe, 0x1}, 466 }; 467 468 static inline int get_coeff(int mclk, int rate) 469 { 470 int i; 471 472 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { 473 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) 474 return i; 475 } 476 477 printk(KERN_ERR "wm8750: could not get coeff for mclk %d @ rate %d\n", 478 mclk, rate); 479 return -EINVAL; 480 } 481 482 static int wm8750_set_dai_sysclk(struct snd_soc_dai *codec_dai, 483 int clk_id, unsigned int freq, int dir) 484 { 485 struct snd_soc_codec *codec = codec_dai->codec; 486 struct wm8750_priv *wm8750 = snd_soc_codec_get_drvdata(codec); 487 488 switch (freq) { 489 case 11289600: 490 case 12000000: 491 case 12288000: 492 case 16934400: 493 case 18432000: 494 wm8750->sysclk = freq; 495 return 0; 496 } 497 return -EINVAL; 498 } 499 500 static int wm8750_set_dai_fmt(struct snd_soc_dai *codec_dai, 501 unsigned int fmt) 502 { 503 struct snd_soc_codec *codec = codec_dai->codec; 504 u16 iface = 0; 505 506 /* set master/slave audio interface */ 507 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 508 case SND_SOC_DAIFMT_CBM_CFM: 509 iface = 0x0040; 510 break; 511 case SND_SOC_DAIFMT_CBS_CFS: 512 break; 513 default: 514 return -EINVAL; 515 } 516 517 /* interface format */ 518 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 519 case SND_SOC_DAIFMT_I2S: 520 iface |= 0x0002; 521 break; 522 case SND_SOC_DAIFMT_RIGHT_J: 523 break; 524 case SND_SOC_DAIFMT_LEFT_J: 525 iface |= 0x0001; 526 break; 527 case SND_SOC_DAIFMT_DSP_A: 528 iface |= 0x0003; 529 break; 530 case SND_SOC_DAIFMT_DSP_B: 531 iface |= 0x0013; 532 break; 533 default: 534 return -EINVAL; 535 } 536 537 /* clock inversion */ 538 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 539 case SND_SOC_DAIFMT_NB_NF: 540 break; 541 case SND_SOC_DAIFMT_IB_IF: 542 iface |= 0x0090; 543 break; 544 case SND_SOC_DAIFMT_IB_NF: 545 iface |= 0x0080; 546 break; 547 case SND_SOC_DAIFMT_NB_IF: 548 iface |= 0x0010; 549 break; 550 default: 551 return -EINVAL; 552 } 553 554 snd_soc_write(codec, WM8750_IFACE, iface); 555 return 0; 556 } 557 558 static int wm8750_pcm_hw_params(struct snd_pcm_substream *substream, 559 struct snd_pcm_hw_params *params, 560 struct snd_soc_dai *dai) 561 { 562 struct snd_soc_pcm_runtime *rtd = substream->private_data; 563 struct snd_soc_device *socdev = rtd->socdev; 564 struct snd_soc_codec *codec = socdev->card->codec; 565 struct wm8750_priv *wm8750 = snd_soc_codec_get_drvdata(codec); 566 u16 iface = snd_soc_read(codec, WM8750_IFACE) & 0x1f3; 567 u16 srate = snd_soc_read(codec, WM8750_SRATE) & 0x1c0; 568 int coeff = get_coeff(wm8750->sysclk, params_rate(params)); 569 570 /* bit size */ 571 switch (params_format(params)) { 572 case SNDRV_PCM_FORMAT_S16_LE: 573 break; 574 case SNDRV_PCM_FORMAT_S20_3LE: 575 iface |= 0x0004; 576 break; 577 case SNDRV_PCM_FORMAT_S24_LE: 578 iface |= 0x0008; 579 break; 580 case SNDRV_PCM_FORMAT_S32_LE: 581 iface |= 0x000c; 582 break; 583 } 584 585 /* set iface & srate */ 586 snd_soc_write(codec, WM8750_IFACE, iface); 587 if (coeff >= 0) 588 snd_soc_write(codec, WM8750_SRATE, srate | 589 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb); 590 591 return 0; 592 } 593 594 static int wm8750_mute(struct snd_soc_dai *dai, int mute) 595 { 596 struct snd_soc_codec *codec = dai->codec; 597 u16 mute_reg = snd_soc_read(codec, WM8750_ADCDAC) & 0xfff7; 598 599 if (mute) 600 snd_soc_write(codec, WM8750_ADCDAC, mute_reg | 0x8); 601 else 602 snd_soc_write(codec, WM8750_ADCDAC, mute_reg); 603 return 0; 604 } 605 606 static int wm8750_set_bias_level(struct snd_soc_codec *codec, 607 enum snd_soc_bias_level level) 608 { 609 u16 pwr_reg = snd_soc_read(codec, WM8750_PWR1) & 0xfe3e; 610 611 switch (level) { 612 case SND_SOC_BIAS_ON: 613 /* set vmid to 50k and unmute dac */ 614 snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x00c0); 615 break; 616 case SND_SOC_BIAS_PREPARE: 617 break; 618 case SND_SOC_BIAS_STANDBY: 619 if (codec->bias_level == SND_SOC_BIAS_OFF) { 620 /* Set VMID to 5k */ 621 snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x01c1); 622 623 /* ...and ramp */ 624 msleep(1000); 625 } 626 627 /* mute dac and set vmid to 500k, enable VREF */ 628 snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x0141); 629 break; 630 case SND_SOC_BIAS_OFF: 631 snd_soc_write(codec, WM8750_PWR1, 0x0001); 632 break; 633 } 634 codec->bias_level = level; 635 return 0; 636 } 637 638 #define WM8750_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 639 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ 640 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) 641 642 #define WM8750_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 643 SNDRV_PCM_FMTBIT_S24_LE) 644 645 static struct snd_soc_dai_ops wm8750_dai_ops = { 646 .hw_params = wm8750_pcm_hw_params, 647 .digital_mute = wm8750_mute, 648 .set_fmt = wm8750_set_dai_fmt, 649 .set_sysclk = wm8750_set_dai_sysclk, 650 }; 651 652 struct snd_soc_dai wm8750_dai = { 653 .name = "WM8750", 654 .playback = { 655 .stream_name = "Playback", 656 .channels_min = 1, 657 .channels_max = 2, 658 .rates = WM8750_RATES, 659 .formats = WM8750_FORMATS,}, 660 .capture = { 661 .stream_name = "Capture", 662 .channels_min = 1, 663 .channels_max = 2, 664 .rates = WM8750_RATES, 665 .formats = WM8750_FORMATS,}, 666 .ops = &wm8750_dai_ops, 667 }; 668 EXPORT_SYMBOL_GPL(wm8750_dai); 669 670 static int wm8750_suspend(struct platform_device *pdev, pm_message_t state) 671 { 672 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 673 struct snd_soc_codec *codec = socdev->card->codec; 674 675 wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF); 676 return 0; 677 } 678 679 static int wm8750_resume(struct platform_device *pdev) 680 { 681 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 682 struct snd_soc_codec *codec = socdev->card->codec; 683 int i; 684 u8 data[2]; 685 u16 *cache = codec->reg_cache; 686 687 /* Sync reg_cache with the hardware */ 688 for (i = 0; i < ARRAY_SIZE(wm8750_reg); i++) { 689 if (i == WM8750_RESET) 690 continue; 691 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 692 data[1] = cache[i] & 0x00ff; 693 codec->hw_write(codec->control_data, data, 2); 694 } 695 696 wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 697 698 return 0; 699 } 700 701 static struct snd_soc_codec *wm8750_codec; 702 703 static int wm8750_probe(struct platform_device *pdev) 704 { 705 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 706 struct snd_soc_codec *codec; 707 int ret = 0; 708 709 if (!wm8750_codec) { 710 dev_err(&pdev->dev, "WM8750 codec not yet registered\n"); 711 return -EINVAL; 712 } 713 714 socdev->card->codec = wm8750_codec; 715 codec = wm8750_codec; 716 717 /* register pcms */ 718 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 719 if (ret < 0) { 720 printk(KERN_ERR "wm8750: failed to create pcms\n"); 721 goto err; 722 } 723 724 snd_soc_add_controls(codec, wm8750_snd_controls, 725 ARRAY_SIZE(wm8750_snd_controls)); 726 wm8750_add_widgets(codec); 727 728 return 0; 729 730 err: 731 return ret; 732 } 733 734 /* power down chip */ 735 static int wm8750_remove(struct platform_device *pdev) 736 { 737 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 738 739 snd_soc_free_pcms(socdev); 740 snd_soc_dapm_free(socdev); 741 742 return 0; 743 } 744 745 struct snd_soc_codec_device soc_codec_dev_wm8750 = { 746 .probe = wm8750_probe, 747 .remove = wm8750_remove, 748 .suspend = wm8750_suspend, 749 .resume = wm8750_resume, 750 }; 751 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8750); 752 753 /* 754 * initialise the WM8750 driver 755 * register the mixer and dsp interfaces with the kernel 756 */ 757 static int wm8750_register(struct wm8750_priv *wm8750, 758 enum snd_soc_control_type control) 759 { 760 struct snd_soc_codec *codec = &wm8750->codec; 761 int reg, ret = 0; 762 763 if (wm8750_codec) { 764 dev_err(codec->dev, "Multiple WM8750 devices not supported\n"); 765 ret = -EINVAL; 766 goto err; 767 } 768 769 mutex_init(&codec->mutex); 770 INIT_LIST_HEAD(&codec->dapm_widgets); 771 INIT_LIST_HEAD(&codec->dapm_paths); 772 773 codec->name = "WM8750"; 774 codec->owner = THIS_MODULE; 775 codec->bias_level = SND_SOC_BIAS_STANDBY; 776 codec->set_bias_level = wm8750_set_bias_level; 777 codec->dai = &wm8750_dai; 778 codec->num_dai = 1; 779 codec->reg_cache_size = ARRAY_SIZE(wm8750->reg_cache) + 1; 780 codec->reg_cache = &wm8750->reg_cache; 781 snd_soc_codec_set_drvdata(codec, wm8750); 782 783 memcpy(codec->reg_cache, wm8750_reg, sizeof(wm8750->reg_cache)); 784 785 ret = snd_soc_codec_set_cache_io(codec, 7, 9, control); 786 if (ret < 0) { 787 printk(KERN_ERR "wm8750: failed to set cache I/O: %d\n", ret); 788 goto err; 789 } 790 791 ret = wm8750_reset(codec); 792 if (ret < 0) { 793 printk(KERN_ERR "wm8750: failed to reset: %d\n", ret); 794 goto err; 795 } 796 797 /* charge output caps */ 798 wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 799 800 /* set the update bits */ 801 reg = snd_soc_read(codec, WM8750_LDAC); 802 snd_soc_write(codec, WM8750_LDAC, reg | 0x0100); 803 reg = snd_soc_read(codec, WM8750_RDAC); 804 snd_soc_write(codec, WM8750_RDAC, reg | 0x0100); 805 reg = snd_soc_read(codec, WM8750_LOUT1V); 806 snd_soc_write(codec, WM8750_LOUT1V, reg | 0x0100); 807 reg = snd_soc_read(codec, WM8750_ROUT1V); 808 snd_soc_write(codec, WM8750_ROUT1V, reg | 0x0100); 809 reg = snd_soc_read(codec, WM8750_LOUT2V); 810 snd_soc_write(codec, WM8750_LOUT2V, reg | 0x0100); 811 reg = snd_soc_read(codec, WM8750_ROUT2V); 812 snd_soc_write(codec, WM8750_ROUT2V, reg | 0x0100); 813 reg = snd_soc_read(codec, WM8750_LINVOL); 814 snd_soc_write(codec, WM8750_LINVOL, reg | 0x0100); 815 reg = snd_soc_read(codec, WM8750_RINVOL); 816 snd_soc_write(codec, WM8750_RINVOL, reg | 0x0100); 817 818 wm8750_codec = codec; 819 820 ret = snd_soc_register_codec(codec); 821 if (ret != 0) { 822 dev_err(codec->dev, "Failed to register codec: %d\n", ret); 823 goto err; 824 } 825 826 ret = snd_soc_register_dais(&wm8750_dai, 1); 827 if (ret != 0) { 828 dev_err(codec->dev, "Failed to register DAIs: %d\n", ret); 829 goto err_codec; 830 } 831 832 return 0; 833 834 err_codec: 835 snd_soc_unregister_codec(codec); 836 err: 837 kfree(wm8750); 838 return ret; 839 } 840 841 static void wm8750_unregister(struct wm8750_priv *wm8750) 842 { 843 wm8750_set_bias_level(&wm8750->codec, SND_SOC_BIAS_OFF); 844 snd_soc_unregister_dais(&wm8750_dai, 1); 845 snd_soc_unregister_codec(&wm8750->codec); 846 kfree(wm8750); 847 wm8750_codec = NULL; 848 } 849 850 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 851 852 /* 853 * WM8750 2 wire address is determined by GPIO5 854 * state during powerup. 855 * low = 0x1a 856 * high = 0x1b 857 */ 858 859 static int wm8750_i2c_probe(struct i2c_client *i2c, 860 const struct i2c_device_id *id) 861 { 862 struct snd_soc_codec *codec; 863 struct wm8750_priv *wm8750; 864 865 wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL); 866 if (wm8750 == NULL) 867 return -ENOMEM; 868 869 codec = &wm8750->codec; 870 codec->control_data = i2c; 871 i2c_set_clientdata(i2c, wm8750); 872 873 codec->dev = &i2c->dev; 874 875 return wm8750_register(wm8750, SND_SOC_I2C); 876 } 877 878 static int wm8750_i2c_remove(struct i2c_client *client) 879 { 880 struct wm8750_priv *wm8750 = i2c_get_clientdata(client); 881 wm8750_unregister(wm8750); 882 return 0; 883 } 884 885 static const struct i2c_device_id wm8750_i2c_id[] = { 886 { "wm8750", 0 }, 887 { "wm8987", 0 }, /* WM8987 is register compatible with WM8750 */ 888 { } 889 }; 890 MODULE_DEVICE_TABLE(i2c, wm8750_i2c_id); 891 892 static struct i2c_driver wm8750_i2c_driver = { 893 .driver = { 894 .name = "WM8750 I2C Codec", 895 .owner = THIS_MODULE, 896 }, 897 .probe = wm8750_i2c_probe, 898 .remove = wm8750_i2c_remove, 899 .id_table = wm8750_i2c_id, 900 }; 901 #endif 902 903 #if defined(CONFIG_SPI_MASTER) 904 static int __devinit wm8750_spi_probe(struct spi_device *spi) 905 { 906 struct snd_soc_codec *codec; 907 struct wm8750_priv *wm8750; 908 909 wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL); 910 if (wm8750 == NULL) 911 return -ENOMEM; 912 913 codec = &wm8750->codec; 914 codec->control_data = spi; 915 codec->dev = &spi->dev; 916 917 dev_set_drvdata(&spi->dev, wm8750); 918 919 return wm8750_register(wm8750, SND_SOC_SPI); 920 } 921 922 static int __devexit wm8750_spi_remove(struct spi_device *spi) 923 { 924 struct wm8750_priv *wm8750 = dev_get_drvdata(&spi->dev); 925 wm8750_unregister(wm8750); 926 return 0; 927 } 928 929 static const struct spi_device_id wm8750_spi_id[] = { 930 { "wm8750", 0 }, 931 { "wm8987", 0 }, 932 { } 933 }; 934 MODULE_DEVICE_TABLE(spi, wm8750_spi_id); 935 936 static struct spi_driver wm8750_spi_driver = { 937 .driver = { 938 .name = "WM8750 SPI Codec", 939 .bus = &spi_bus_type, 940 .owner = THIS_MODULE, 941 }, 942 .probe = wm8750_spi_probe, 943 .remove = __devexit_p(wm8750_spi_remove), 944 .id_table = wm8750_spi_id, 945 }; 946 #endif 947 948 static int __init wm8750_modinit(void) 949 { 950 int ret; 951 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 952 ret = i2c_add_driver(&wm8750_i2c_driver); 953 if (ret != 0) 954 pr_err("Failed to register WM8750 I2C driver: %d\n", ret); 955 #endif 956 #if defined(CONFIG_SPI_MASTER) 957 ret = spi_register_driver(&wm8750_spi_driver); 958 if (ret != 0) 959 pr_err("Failed to register WM8750 SPI driver: %d\n", ret); 960 #endif 961 return 0; 962 } 963 module_init(wm8750_modinit); 964 965 static void __exit wm8750_exit(void) 966 { 967 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 968 i2c_del_driver(&wm8750_i2c_driver); 969 #endif 970 #if defined(CONFIG_SPI_MASTER) 971 spi_unregister_driver(&wm8750_spi_driver); 972 #endif 973 } 974 module_exit(wm8750_exit); 975 976 MODULE_DESCRIPTION("ASoC WM8750 driver"); 977 MODULE_AUTHOR("Liam Girdwood"); 978 MODULE_LICENSE("GPL"); 979