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