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 #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 snd_soc_dapm_new_widgets(codec); 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 = codec->private_data; 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 = codec->private_data; 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 /* set vmid to 5k for quick power up */ 618 snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x01c1); 619 break; 620 case SND_SOC_BIAS_STANDBY: 621 /* mute dac and set vmid to 500k, enable VREF */ 622 snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x0141); 623 break; 624 case SND_SOC_BIAS_OFF: 625 snd_soc_write(codec, WM8750_PWR1, 0x0001); 626 break; 627 } 628 codec->bias_level = level; 629 return 0; 630 } 631 632 #define WM8750_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 633 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ 634 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) 635 636 #define WM8750_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 637 SNDRV_PCM_FMTBIT_S24_LE) 638 639 static struct snd_soc_dai_ops wm8750_dai_ops = { 640 .hw_params = wm8750_pcm_hw_params, 641 .digital_mute = wm8750_mute, 642 .set_fmt = wm8750_set_dai_fmt, 643 .set_sysclk = wm8750_set_dai_sysclk, 644 }; 645 646 struct snd_soc_dai wm8750_dai = { 647 .name = "WM8750", 648 .playback = { 649 .stream_name = "Playback", 650 .channels_min = 1, 651 .channels_max = 2, 652 .rates = WM8750_RATES, 653 .formats = WM8750_FORMATS,}, 654 .capture = { 655 .stream_name = "Capture", 656 .channels_min = 1, 657 .channels_max = 2, 658 .rates = WM8750_RATES, 659 .formats = WM8750_FORMATS,}, 660 .ops = &wm8750_dai_ops, 661 }; 662 EXPORT_SYMBOL_GPL(wm8750_dai); 663 664 static void wm8750_work(struct work_struct *work) 665 { 666 struct snd_soc_codec *codec = 667 container_of(work, struct snd_soc_codec, delayed_work.work); 668 wm8750_set_bias_level(codec, codec->bias_level); 669 } 670 671 static int wm8750_suspend(struct platform_device *pdev, pm_message_t state) 672 { 673 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 674 struct snd_soc_codec *codec = socdev->card->codec; 675 676 wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF); 677 return 0; 678 } 679 680 static int wm8750_resume(struct platform_device *pdev) 681 { 682 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 683 struct snd_soc_codec *codec = socdev->card->codec; 684 int i; 685 u8 data[2]; 686 u16 *cache = codec->reg_cache; 687 688 /* Sync reg_cache with the hardware */ 689 for (i = 0; i < ARRAY_SIZE(wm8750_reg); i++) { 690 if (i == WM8750_RESET) 691 continue; 692 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 693 data[1] = cache[i] & 0x00ff; 694 codec->hw_write(codec->control_data, data, 2); 695 } 696 697 wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 698 699 /* charge wm8750 caps */ 700 if (codec->suspend_bias_level == SND_SOC_BIAS_ON) { 701 wm8750_set_bias_level(codec, SND_SOC_BIAS_PREPARE); 702 codec->bias_level = SND_SOC_BIAS_ON; 703 schedule_delayed_work(&codec->delayed_work, 704 msecs_to_jiffies(1000)); 705 } 706 707 return 0; 708 } 709 710 /* 711 * initialise the WM8750 driver 712 * register the mixer and dsp interfaces with the kernel 713 */ 714 static int wm8750_init(struct snd_soc_device *socdev, 715 enum snd_soc_control_type control) 716 { 717 struct snd_soc_codec *codec = socdev->card->codec; 718 int reg, ret = 0; 719 720 codec->name = "WM8750"; 721 codec->owner = THIS_MODULE; 722 codec->set_bias_level = wm8750_set_bias_level; 723 codec->dai = &wm8750_dai; 724 codec->num_dai = 1; 725 codec->reg_cache_size = ARRAY_SIZE(wm8750_reg); 726 codec->reg_cache = kmemdup(wm8750_reg, sizeof(wm8750_reg), GFP_KERNEL); 727 if (codec->reg_cache == NULL) 728 return -ENOMEM; 729 730 ret = snd_soc_codec_set_cache_io(codec, 7, 9, control); 731 if (ret < 0) { 732 printk(KERN_ERR "wm8750: failed to set cache I/O: %d\n", ret); 733 goto err; 734 } 735 736 ret = wm8750_reset(codec); 737 if (ret < 0) { 738 printk(KERN_ERR "wm8750: failed to reset: %d\n", ret); 739 goto err; 740 } 741 742 /* register pcms */ 743 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 744 if (ret < 0) { 745 printk(KERN_ERR "wm8750: failed to create pcms\n"); 746 goto err; 747 } 748 749 /* charge output caps */ 750 wm8750_set_bias_level(codec, SND_SOC_BIAS_PREPARE); 751 codec->bias_level = SND_SOC_BIAS_STANDBY; 752 schedule_delayed_work(&codec->delayed_work, msecs_to_jiffies(1000)); 753 754 /* set the update bits */ 755 reg = snd_soc_read(codec, WM8750_LDAC); 756 snd_soc_write(codec, WM8750_LDAC, reg | 0x0100); 757 reg = snd_soc_read(codec, WM8750_RDAC); 758 snd_soc_write(codec, WM8750_RDAC, reg | 0x0100); 759 reg = snd_soc_read(codec, WM8750_LOUT1V); 760 snd_soc_write(codec, WM8750_LOUT1V, reg | 0x0100); 761 reg = snd_soc_read(codec, WM8750_ROUT1V); 762 snd_soc_write(codec, WM8750_ROUT1V, reg | 0x0100); 763 reg = snd_soc_read(codec, WM8750_LOUT2V); 764 snd_soc_write(codec, WM8750_LOUT2V, reg | 0x0100); 765 reg = snd_soc_read(codec, WM8750_ROUT2V); 766 snd_soc_write(codec, WM8750_ROUT2V, reg | 0x0100); 767 reg = snd_soc_read(codec, WM8750_LINVOL); 768 snd_soc_write(codec, WM8750_LINVOL, reg | 0x0100); 769 reg = snd_soc_read(codec, WM8750_RINVOL); 770 snd_soc_write(codec, WM8750_RINVOL, reg | 0x0100); 771 772 snd_soc_add_controls(codec, wm8750_snd_controls, 773 ARRAY_SIZE(wm8750_snd_controls)); 774 wm8750_add_widgets(codec); 775 ret = snd_soc_init_card(socdev); 776 if (ret < 0) { 777 printk(KERN_ERR "wm8750: failed to register card\n"); 778 goto card_err; 779 } 780 return ret; 781 782 card_err: 783 snd_soc_free_pcms(socdev); 784 snd_soc_dapm_free(socdev); 785 err: 786 kfree(codec->reg_cache); 787 return ret; 788 } 789 790 /* If the i2c layer weren't so broken, we could pass this kind of data 791 around */ 792 static struct snd_soc_device *wm8750_socdev; 793 794 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 795 796 /* 797 * WM8750 2 wire address is determined by GPIO5 798 * state during powerup. 799 * low = 0x1a 800 * high = 0x1b 801 */ 802 803 static int wm8750_i2c_probe(struct i2c_client *i2c, 804 const struct i2c_device_id *id) 805 { 806 struct snd_soc_device *socdev = wm8750_socdev; 807 struct snd_soc_codec *codec = socdev->card->codec; 808 int ret; 809 810 i2c_set_clientdata(i2c, codec); 811 codec->control_data = i2c; 812 813 ret = wm8750_init(socdev, SND_SOC_I2C); 814 if (ret < 0) 815 pr_err("failed to initialise WM8750\n"); 816 817 return ret; 818 } 819 820 static int wm8750_i2c_remove(struct i2c_client *client) 821 { 822 struct snd_soc_codec *codec = i2c_get_clientdata(client); 823 kfree(codec->reg_cache); 824 return 0; 825 } 826 827 static const struct i2c_device_id wm8750_i2c_id[] = { 828 { "wm8750", 0 }, 829 { } 830 }; 831 MODULE_DEVICE_TABLE(i2c, wm8750_i2c_id); 832 833 static struct i2c_driver wm8750_i2c_driver = { 834 .driver = { 835 .name = "WM8750 I2C Codec", 836 .owner = THIS_MODULE, 837 }, 838 .probe = wm8750_i2c_probe, 839 .remove = wm8750_i2c_remove, 840 .id_table = wm8750_i2c_id, 841 }; 842 843 static int wm8750_add_i2c_device(struct platform_device *pdev, 844 const struct wm8750_setup_data *setup) 845 { 846 struct i2c_board_info info; 847 struct i2c_adapter *adapter; 848 struct i2c_client *client; 849 int ret; 850 851 ret = i2c_add_driver(&wm8750_i2c_driver); 852 if (ret != 0) { 853 dev_err(&pdev->dev, "can't add i2c driver\n"); 854 return ret; 855 } 856 857 memset(&info, 0, sizeof(struct i2c_board_info)); 858 info.addr = setup->i2c_address; 859 strlcpy(info.type, "wm8750", I2C_NAME_SIZE); 860 861 adapter = i2c_get_adapter(setup->i2c_bus); 862 if (!adapter) { 863 dev_err(&pdev->dev, "can't get i2c adapter %d\n", 864 setup->i2c_bus); 865 goto err_driver; 866 } 867 868 client = i2c_new_device(adapter, &info); 869 i2c_put_adapter(adapter); 870 if (!client) { 871 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", 872 (unsigned int)info.addr); 873 goto err_driver; 874 } 875 876 return 0; 877 878 err_driver: 879 i2c_del_driver(&wm8750_i2c_driver); 880 return -ENODEV; 881 } 882 #endif 883 884 #if defined(CONFIG_SPI_MASTER) 885 static int __devinit wm8750_spi_probe(struct spi_device *spi) 886 { 887 struct snd_soc_device *socdev = wm8750_socdev; 888 struct snd_soc_codec *codec = socdev->card->codec; 889 int ret; 890 891 codec->control_data = spi; 892 893 ret = wm8750_init(socdev, SND_SOC_SPI); 894 if (ret < 0) 895 dev_err(&spi->dev, "failed to initialise WM8750\n"); 896 897 return ret; 898 } 899 900 static int __devexit wm8750_spi_remove(struct spi_device *spi) 901 { 902 return 0; 903 } 904 905 static struct spi_driver wm8750_spi_driver = { 906 .driver = { 907 .name = "wm8750", 908 .bus = &spi_bus_type, 909 .owner = THIS_MODULE, 910 }, 911 .probe = wm8750_spi_probe, 912 .remove = __devexit_p(wm8750_spi_remove), 913 }; 914 #endif 915 916 static int wm8750_probe(struct platform_device *pdev) 917 { 918 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 919 struct wm8750_setup_data *setup = socdev->codec_data; 920 struct snd_soc_codec *codec; 921 struct wm8750_priv *wm8750; 922 int ret; 923 924 pr_info("WM8750 Audio Codec %s", WM8750_VERSION); 925 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 926 if (codec == NULL) 927 return -ENOMEM; 928 929 wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL); 930 if (wm8750 == NULL) { 931 kfree(codec); 932 return -ENOMEM; 933 } 934 935 codec->private_data = wm8750; 936 socdev->card->codec = codec; 937 mutex_init(&codec->mutex); 938 INIT_LIST_HEAD(&codec->dapm_widgets); 939 INIT_LIST_HEAD(&codec->dapm_paths); 940 wm8750_socdev = socdev; 941 INIT_DELAYED_WORK(&codec->delayed_work, wm8750_work); 942 943 ret = -ENODEV; 944 945 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 946 if (setup->i2c_address) { 947 ret = wm8750_add_i2c_device(pdev, setup); 948 } 949 #endif 950 #if defined(CONFIG_SPI_MASTER) 951 if (setup->spi) { 952 ret = spi_register_driver(&wm8750_spi_driver); 953 if (ret != 0) 954 printk(KERN_ERR "can't add spi driver"); 955 } 956 #endif 957 958 if (ret != 0) { 959 kfree(codec->private_data); 960 kfree(codec); 961 } 962 return ret; 963 } 964 965 /* 966 * This function forces any delayed work to be queued and run. 967 */ 968 static int run_delayed_work(struct delayed_work *dwork) 969 { 970 int ret; 971 972 /* cancel any work waiting to be queued. */ 973 ret = cancel_delayed_work(dwork); 974 975 /* if there was any work waiting then we run it now and 976 * wait for it's completion */ 977 if (ret) { 978 schedule_delayed_work(dwork, 0); 979 flush_scheduled_work(); 980 } 981 return ret; 982 } 983 984 /* power down chip */ 985 static int wm8750_remove(struct platform_device *pdev) 986 { 987 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 988 struct snd_soc_codec *codec = socdev->card->codec; 989 990 if (codec->control_data) 991 wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF); 992 run_delayed_work(&codec->delayed_work); 993 snd_soc_free_pcms(socdev); 994 snd_soc_dapm_free(socdev); 995 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 996 i2c_unregister_device(codec->control_data); 997 i2c_del_driver(&wm8750_i2c_driver); 998 #endif 999 #if defined(CONFIG_SPI_MASTER) 1000 spi_unregister_driver(&wm8750_spi_driver); 1001 #endif 1002 kfree(codec->private_data); 1003 kfree(codec); 1004 1005 return 0; 1006 } 1007 1008 struct snd_soc_codec_device soc_codec_dev_wm8750 = { 1009 .probe = wm8750_probe, 1010 .remove = wm8750_remove, 1011 .suspend = wm8750_suspend, 1012 .resume = wm8750_resume, 1013 }; 1014 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8750); 1015 1016 static int __init wm8750_modinit(void) 1017 { 1018 return snd_soc_register_dai(&wm8750_dai); 1019 } 1020 module_init(wm8750_modinit); 1021 1022 static void __exit wm8750_exit(void) 1023 { 1024 snd_soc_unregister_dai(&wm8750_dai); 1025 } 1026 module_exit(wm8750_exit); 1027 1028 MODULE_DESCRIPTION("ASoC WM8750 driver"); 1029 MODULE_AUTHOR("Liam Girdwood"); 1030 MODULE_LICENSE("GPL"); 1031