sound/soc/codecs/wm8750.c

   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         enum snd_soc_control_type control_type;
  56         void *control_data;
  57         u16 reg_cache[ARRAY_SIZE(wm8750_reg)];
  58 };
  59
  60 #define wm8750_reset(c) snd_soc_write(c, WM8750_RESET, 0)
  61
  62 /*
  63  * WM8750 Controls
  64  */
  65 static const char *wm8750_bass[] = {"Linear Control", "Adaptive Boost"};
  66 static const char *wm8750_bass_filter[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" };
  67 static const char *wm8750_treble[] = {"8kHz", "4kHz"};
  68 static const char *wm8750_3d_lc[] = {"200Hz", "500Hz"};
  69 static const char *wm8750_3d_uc[] = {"2.2kHz", "1.5kHz"};
  70 static const char *wm8750_3d_func[] = {"Capture", "Playback"};
  71 static const char *wm8750_alc_func[] = {"Off", "Right", "Left", "Stereo"};
  72 static const char *wm8750_ng_type[] = {"Constant PGA Gain",
  73         "Mute ADC Output"};
  74 static const char *wm8750_line_mux[] = {"Line 1", "Line 2", "Line 3", "PGA",
  75         "Differential"};
  76 static const char *wm8750_pga_sel[] = {"Line 1", "Line 2", "Line 3",
  77         "Differential"};
  78 static const char *wm8750_out3[] = {"VREF", "ROUT1 + Vol", "MonoOut",
  79         "ROUT1"};
  80 static const char *wm8750_diff_sel[] = {"Line 1", "Line 2"};
  81 static const char *wm8750_adcpol[] = {"Normal", "L Invert", "R Invert",
  82         "L + R Invert"};
  83 static const char *wm8750_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
  84 static const char *wm8750_mono_mux[] = {"Stereo", "Mono (Left)",
  85         "Mono (Right)", "Digital Mono"};
  86
  87 static const struct soc_enum wm8750_enum[] = {
  88 SOC_ENUM_SINGLE(WM8750_BASS, 7, 2, wm8750_bass),
  89 SOC_ENUM_SINGLE(WM8750_BASS, 6, 2, wm8750_bass_filter),
  90 SOC_ENUM_SINGLE(WM8750_TREBLE, 6, 2, wm8750_treble),
  91 SOC_ENUM_SINGLE(WM8750_3D, 5, 2, wm8750_3d_lc),
  92 SOC_ENUM_SINGLE(WM8750_3D, 6, 2, wm8750_3d_uc),
  93 SOC_ENUM_SINGLE(WM8750_3D, 7, 2, wm8750_3d_func),
  94 SOC_ENUM_SINGLE(WM8750_ALC1, 7, 4, wm8750_alc_func),
  95 SOC_ENUM_SINGLE(WM8750_NGATE, 1, 2, wm8750_ng_type),
  96 SOC_ENUM_SINGLE(WM8750_LOUTM1, 0, 5, wm8750_line_mux),
  97 SOC_ENUM_SINGLE(WM8750_ROUTM1, 0, 5, wm8750_line_mux),
  98 SOC_ENUM_SINGLE(WM8750_LADCIN, 6, 4, wm8750_pga_sel), /* 10 */
  99 SOC_ENUM_SINGLE(WM8750_RADCIN, 6, 4, wm8750_pga_sel),
 100 SOC_ENUM_SINGLE(WM8750_ADCTL2, 7, 4, wm8750_out3),
 101 SOC_ENUM_SINGLE(WM8750_ADCIN, 8, 2, wm8750_diff_sel),
 102 SOC_ENUM_SINGLE(WM8750_ADCDAC, 5, 4, wm8750_adcpol),
 103 SOC_ENUM_SINGLE(WM8750_ADCDAC, 1, 4, wm8750_deemph),
 104 SOC_ENUM_SINGLE(WM8750_ADCIN, 6, 4, wm8750_mono_mux), /* 16 */
 105
 106 };
 107
 108 static const struct snd_kcontrol_new wm8750_snd_controls[] = {
 109
 110 SOC_DOUBLE_R("Capture Volume", WM8750_LINVOL, WM8750_RINVOL, 0, 63, 0),
 111 SOC_DOUBLE_R("Capture ZC Switch", WM8750_LINVOL, WM8750_RINVOL, 6, 1, 0),
 112 SOC_DOUBLE_R("Capture Switch", WM8750_LINVOL, WM8750_RINVOL, 7, 1, 1),
 113
 114 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8750_LOUT1V,
 115         WM8750_ROUT1V, 7, 1, 0),
 116 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8750_LOUT2V,
 117         WM8750_ROUT2V, 7, 1, 0),
 118
 119 SOC_ENUM("Playback De-emphasis", wm8750_enum[15]),
 120
 121 SOC_ENUM("Capture Polarity", wm8750_enum[14]),
 122 SOC_SINGLE("Playback 6dB Attenuate", WM8750_ADCDAC, 7, 1, 0),
 123 SOC_SINGLE("Capture 6dB Attenuate", WM8750_ADCDAC, 8, 1, 0),
 124
 125 SOC_DOUBLE_R("PCM Volume", WM8750_LDAC, WM8750_RDAC, 0, 255, 0),
 126
 127 SOC_ENUM("Bass Boost", wm8750_enum[0]),
 128 SOC_ENUM("Bass Filter", wm8750_enum[1]),
 129 SOC_SINGLE("Bass Volume", WM8750_BASS, 0, 15, 1),
 130
 131 SOC_SINGLE("Treble Volume", WM8750_TREBLE, 0, 15, 1),
 132 SOC_ENUM("Treble Cut-off", wm8750_enum[2]),
 133
 134 SOC_SINGLE("3D Switch", WM8750_3D, 0, 1, 0),
 135 SOC_SINGLE("3D Volume", WM8750_3D, 1, 15, 0),
 136 SOC_ENUM("3D Lower Cut-off", wm8750_enum[3]),
 137 SOC_ENUM("3D Upper Cut-off", wm8750_enum[4]),
 138 SOC_ENUM("3D Mode", wm8750_enum[5]),
 139
 140 SOC_SINGLE("ALC Capture Target Volume", WM8750_ALC1, 0, 7, 0),
 141 SOC_SINGLE("ALC Capture Max Volume", WM8750_ALC1, 4, 7, 0),
 142 SOC_ENUM("ALC Capture Function", wm8750_enum[6]),
 143 SOC_SINGLE("ALC Capture ZC Switch", WM8750_ALC2, 7, 1, 0),
 144 SOC_SINGLE("ALC Capture Hold Time", WM8750_ALC2, 0, 15, 0),
 145 SOC_SINGLE("ALC Capture Decay Time", WM8750_ALC3, 4, 15, 0),
 146 SOC_SINGLE("ALC Capture Attack Time", WM8750_ALC3, 0, 15, 0),
 147 SOC_SINGLE("ALC Capture NG Threshold", WM8750_NGATE, 3, 31, 0),
 148 SOC_ENUM("ALC Capture NG Type", wm8750_enum[4]),
 149 SOC_SINGLE("ALC Capture NG Switch", WM8750_NGATE, 0, 1, 0),
 150
 151 SOC_SINGLE("Left ADC Capture Volume", WM8750_LADC, 0, 255, 0),
 152 SOC_SINGLE("Right ADC Capture Volume", WM8750_RADC, 0, 255, 0),
 153
 154 SOC_SINGLE("ZC Timeout Switch", WM8750_ADCTL1, 0, 1, 0),
 155 SOC_SINGLE("Playback Invert Switch", WM8750_ADCTL1, 1, 1, 0),
 156
 157 SOC_SINGLE("Right Speaker Playback Invert Switch", WM8750_ADCTL2, 4, 1, 0),
 158
 159 /* Unimplemented */
 160 /* ADCDAC Bit 0 - ADCHPD */
 161 /* ADCDAC Bit 4 - HPOR */
 162 /* ADCTL1 Bit 2,3 - DATSEL */
 163 /* ADCTL1 Bit 4,5 - DMONOMIX */
 164 /* ADCTL1 Bit 6,7 - VSEL */
 165 /* ADCTL2 Bit 2 - LRCM */
 166 /* ADCTL2 Bit 3 - TRI */
 167 /* ADCTL3 Bit 5 - HPFLREN */
 168 /* ADCTL3 Bit 6 - VROI */
 169 /* ADCTL3 Bit 7,8 - ADCLRM */
 170 /* ADCIN Bit 4 - LDCM */
 171 /* ADCIN Bit 5 - RDCM */
 172
 173 SOC_DOUBLE_R("Mic Boost", WM8750_LADCIN, WM8750_RADCIN, 4, 3, 0),
 174
 175 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8750_LOUTM1,
 176         WM8750_LOUTM2, 4, 7, 1),
 177 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8750_ROUTM1,
 178         WM8750_ROUTM2, 4, 7, 1),
 179 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8750_MOUTM1,
 180         WM8750_MOUTM2, 4, 7, 1),
 181
 182 SOC_SINGLE("Mono Playback ZC Switch", WM8750_MOUTV, 7, 1, 0),
 183
 184 SOC_DOUBLE_R("Headphone Playback Volume", WM8750_LOUT1V, WM8750_ROUT1V,
 185         0, 127, 0),
 186 SOC_DOUBLE_R("Speaker Playback Volume", WM8750_LOUT2V, WM8750_ROUT2V,
 187         0, 127, 0),
 188
 189 SOC_SINGLE("Mono Playback Volume", WM8750_MOUTV, 0, 127, 0),
 190
 191 };
 192
 193 /*
 194  * DAPM Controls
 195  */
 196
 197 /* Left Mixer */
 198 static const struct snd_kcontrol_new wm8750_left_mixer_controls[] = {
 199 SOC_DAPM_SINGLE("Playback Switch", WM8750_LOUTM1, 8, 1, 0),
 200 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_LOUTM1, 7, 1, 0),
 201 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_LOUTM2, 8, 1, 0),
 202 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_LOUTM2, 7, 1, 0),
 203 };
 204
 205 /* Right Mixer */
 206 static const struct snd_kcontrol_new wm8750_right_mixer_controls[] = {
 207 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_ROUTM1, 8, 1, 0),
 208 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_ROUTM1, 7, 1, 0),
 209 SOC_DAPM_SINGLE("Playback Switch", WM8750_ROUTM2, 8, 1, 0),
 210 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_ROUTM2, 7, 1, 0),
 211 };
 212
 213 /* Mono Mixer */
 214 static const struct snd_kcontrol_new wm8750_mono_mixer_controls[] = {
 215 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_MOUTM1, 8, 1, 0),
 216 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_MOUTM1, 7, 1, 0),
 217 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_MOUTM2, 8, 1, 0),
 218 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_MOUTM2, 7, 1, 0),
 219 };
 220
 221 /* Left Line Mux */
 222 static const struct snd_kcontrol_new wm8750_left_line_controls =
 223 SOC_DAPM_ENUM("Route", wm8750_enum[8]);
 224
 225 /* Right Line Mux */
 226 static const struct snd_kcontrol_new wm8750_right_line_controls =
 227 SOC_DAPM_ENUM("Route", wm8750_enum[9]);
 228
 229 /* Left PGA Mux */
 230 static const struct snd_kcontrol_new wm8750_left_pga_controls =
 231 SOC_DAPM_ENUM("Route", wm8750_enum[10]);
 232
 233 /* Right PGA Mux */
 234 static const struct snd_kcontrol_new wm8750_right_pga_controls =
 235 SOC_DAPM_ENUM("Route", wm8750_enum[11]);
 236
 237 /* Out 3 Mux */
 238 static const struct snd_kcontrol_new wm8750_out3_controls =
 239 SOC_DAPM_ENUM("Route", wm8750_enum[12]);
 240
 241 /* Differential Mux */
 242 static const struct snd_kcontrol_new wm8750_diffmux_controls =
 243 SOC_DAPM_ENUM("Route", wm8750_enum[13]);
 244
 245 /* Mono ADC Mux */
 246 static const struct snd_kcontrol_new wm8750_monomux_controls =
 247 SOC_DAPM_ENUM("Route", wm8750_enum[16]);
 248
 249 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
 250         SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
 251                 &wm8750_left_mixer_controls[0],
 252                 ARRAY_SIZE(wm8750_left_mixer_controls)),
 253         SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
 254                 &wm8750_right_mixer_controls[0],
 255                 ARRAY_SIZE(wm8750_right_mixer_controls)),
 256         SND_SOC_DAPM_MIXER("Mono Mixer", WM8750_PWR2, 2, 0,
 257                 &wm8750_mono_mixer_controls[0],
 258                 ARRAY_SIZE(wm8750_mono_mixer_controls)),
 259
 260         SND_SOC_DAPM_PGA("Right Out 2", WM8750_PWR2, 3, 0, NULL, 0),
 261         SND_SOC_DAPM_PGA("Left Out 2", WM8750_PWR2, 4, 0, NULL, 0),
 262         SND_SOC_DAPM_PGA("Right Out 1", WM8750_PWR2, 5, 0, NULL, 0),
 263         SND_SOC_DAPM_PGA("Left Out 1", WM8750_PWR2, 6, 0, NULL, 0),
 264         SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8750_PWR2, 7, 0),
 265         SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8750_PWR2, 8, 0),
 266
 267         SND_SOC_DAPM_MICBIAS("Mic Bias", WM8750_PWR1, 1, 0),
 268         SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8750_PWR1, 2, 0),
 269         SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8750_PWR1, 3, 0),
 270
 271         SND_SOC_DAPM_MUX("Left PGA Mux", WM8750_PWR1, 5, 0,
 272                 &wm8750_left_pga_controls),
 273         SND_SOC_DAPM_MUX("Right PGA Mux", WM8750_PWR1, 4, 0,
 274                 &wm8750_right_pga_controls),
 275         SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
 276                 &wm8750_left_line_controls),
 277         SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
 278                 &wm8750_right_line_controls),
 279
 280         SND_SOC_DAPM_MUX("Out3 Mux", SND_SOC_NOPM, 0, 0, &wm8750_out3_controls),
 281         SND_SOC_DAPM_PGA("Out 3", WM8750_PWR2, 1, 0, NULL, 0),
 282         SND_SOC_DAPM_PGA("Mono Out 1", WM8750_PWR2, 2, 0, NULL, 0),
 283
 284         SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
 285                 &wm8750_diffmux_controls),
 286         SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
 287                 &wm8750_monomux_controls),
 288         SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
 289                 &wm8750_monomux_controls),
 290
 291         SND_SOC_DAPM_OUTPUT("LOUT1"),
 292         SND_SOC_DAPM_OUTPUT("ROUT1"),
 293         SND_SOC_DAPM_OUTPUT("LOUT2"),
 294         SND_SOC_DAPM_OUTPUT("ROUT2"),
 295         SND_SOC_DAPM_OUTPUT("MONO1"),
 296         SND_SOC_DAPM_OUTPUT("OUT3"),
 297         SND_SOC_DAPM_OUTPUT("VREF"),
 298
 299         SND_SOC_DAPM_INPUT("LINPUT1"),
 300         SND_SOC_DAPM_INPUT("LINPUT2"),
 301         SND_SOC_DAPM_INPUT("LINPUT3"),
 302         SND_SOC_DAPM_INPUT("RINPUT1"),
 303         SND_SOC_DAPM_INPUT("RINPUT2"),
 304         SND_SOC_DAPM_INPUT("RINPUT3"),
 305 };
 306
 307 static const struct snd_soc_dapm_route audio_map[] = {
 308         /* left mixer */
 309         {"Left Mixer", "Playback Switch", "Left DAC"},
 310         {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
 311         {"Left Mixer", "Right Playback Switch", "Right DAC"},
 312         {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
 313
 314         /* right mixer */
 315         {"Right Mixer", "Left Playback Switch", "Left DAC"},
 316         {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
 317         {"Right Mixer", "Playback Switch", "Right DAC"},
 318         {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
 319
 320         /* left out 1 */
 321         {"Left Out 1", NULL, "Left Mixer"},
 322         {"LOUT1", NULL, "Left Out 1"},
 323
 324         /* left out 2 */
 325         {"Left Out 2", NULL, "Left Mixer"},
 326         {"LOUT2", NULL, "Left Out 2"},
 327
 328         /* right out 1 */
 329         {"Right Out 1", NULL, "Right Mixer"},
 330         {"ROUT1", NULL, "Right Out 1"},
 331
 332         /* right out 2 */
 333         {"Right Out 2", NULL, "Right Mixer"},
 334         {"ROUT2", NULL, "Right Out 2"},
 335
 336         /* mono mixer */
 337         {"Mono Mixer", "Left Playback Switch", "Left DAC"},
 338         {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
 339         {"Mono Mixer", "Right Playback Switch", "Right DAC"},
 340         {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
 341
 342         /* mono out */
 343         {"Mono Out 1", NULL, "Mono Mixer"},
 344         {"MONO1", NULL, "Mono Out 1"},
 345
 346         /* out 3 */
 347         {"Out3 Mux", "VREF", "VREF"},
 348         {"Out3 Mux", "ROUT1 + Vol", "ROUT1"},
 349         {"Out3 Mux", "ROUT1", "Right Mixer"},
 350         {"Out3 Mux", "MonoOut", "MONO1"},
 351         {"Out 3", NULL, "Out3 Mux"},
 352         {"OUT3", NULL, "Out 3"},
 353
 354         /* Left Line Mux */
 355         {"Left Line Mux", "Line 1", "LINPUT1"},
 356         {"Left Line Mux", "Line 2", "LINPUT2"},
 357         {"Left Line Mux", "Line 3", "LINPUT3"},
 358         {"Left Line Mux", "PGA", "Left PGA Mux"},
 359         {"Left Line Mux", "Differential", "Differential Mux"},
 360
 361         /* Right Line Mux */
 362         {"Right Line Mux", "Line 1", "RINPUT1"},
 363         {"Right Line Mux", "Line 2", "RINPUT2"},
 364         {"Right Line Mux", "Line 3", "RINPUT3"},
 365         {"Right Line Mux", "PGA", "Right PGA Mux"},
 366         {"Right Line Mux", "Differential", "Differential Mux"},
 367
 368         /* Left PGA Mux */
 369         {"Left PGA Mux", "Line 1", "LINPUT1"},
 370         {"Left PGA Mux", "Line 2", "LINPUT2"},
 371         {"Left PGA Mux", "Line 3", "LINPUT3"},
 372         {"Left PGA Mux", "Differential", "Differential Mux"},
 373
 374         /* Right PGA Mux */
 375         {"Right PGA Mux", "Line 1", "RINPUT1"},
 376         {"Right PGA Mux", "Line 2", "RINPUT2"},
 377         {"Right PGA Mux", "Line 3", "RINPUT3"},
 378         {"Right PGA Mux", "Differential", "Differential Mux"},
 379
 380         /* Differential Mux */
 381         {"Differential Mux", "Line 1", "LINPUT1"},
 382         {"Differential Mux", "Line 1", "RINPUT1"},
 383         {"Differential Mux", "Line 2", "LINPUT2"},
 384         {"Differential Mux", "Line 2", "RINPUT2"},
 385
 386         /* Left ADC Mux */
 387         {"Left ADC Mux", "Stereo", "Left PGA Mux"},
 388         {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
 389         {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
 390
 391         /* Right ADC Mux */
 392         {"Right ADC Mux", "Stereo", "Right PGA Mux"},
 393         {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
 394         {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
 395
 396         /* ADC */
 397         {"Left ADC", NULL, "Left ADC Mux"},
 398         {"Right ADC", NULL, "Right ADC Mux"},
 399 };
 400
 401 static int wm8750_add_widgets(struct snd_soc_codec *codec)
 402 {
 403         snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
 404                                   ARRAY_SIZE(wm8750_dapm_widgets));
 405
 406         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 407
 408         return 0;
 409 }
 410
 411 struct _coeff_div {
 412         u32 mclk;
 413         u32 rate;
 414         u16 fs;
 415         u8 sr:5;
 416         u8 usb:1;
 417 };
 418
 419 /* codec hifi mclk clock divider coefficients */
 420 static const struct _coeff_div coeff_div[] = {
 421         /* 8k */
 422         {12288000, 8000, 1536, 0x6, 0x0},
 423         {11289600, 8000, 1408, 0x16, 0x0},
 424         {18432000, 8000, 2304, 0x7, 0x0},
 425         {16934400, 8000, 2112, 0x17, 0x0},
 426         {12000000, 8000, 1500, 0x6, 0x1},
 427
 428         /* 11.025k */
 429         {11289600, 11025, 1024, 0x18, 0x0},
 430         {16934400, 11025, 1536, 0x19, 0x0},
 431         {12000000, 11025, 1088, 0x19, 0x1},
 432
 433         /* 16k */
 434         {12288000, 16000, 768, 0xa, 0x0},
 435         {18432000, 16000, 1152, 0xb, 0x0},
 436         {12000000, 16000, 750, 0xa, 0x1},
 437
 438         /* 22.05k */
 439         {11289600, 22050, 512, 0x1a, 0x0},
 440         {16934400, 22050, 768, 0x1b, 0x0},
 441         {12000000, 22050, 544, 0x1b, 0x1},
 442
 443         /* 32k */
 444         {12288000, 32000, 384, 0xc, 0x0},
 445         {18432000, 32000, 576, 0xd, 0x0},
 446         {12000000, 32000, 375, 0xa, 0x1},
 447
 448         /* 44.1k */
 449         {11289600, 44100, 256, 0x10, 0x0},
 450         {16934400, 44100, 384, 0x11, 0x0},
 451         {12000000, 44100, 272, 0x11, 0x1},
 452
 453         /* 48k */
 454         {12288000, 48000, 256, 0x0, 0x0},
 455         {18432000, 48000, 384, 0x1, 0x0},
 456         {12000000, 48000, 250, 0x0, 0x1},
 457
 458         /* 88.2k */
 459         {11289600, 88200, 128, 0x1e, 0x0},
 460         {16934400, 88200, 192, 0x1f, 0x0},
 461         {12000000, 88200, 136, 0x1f, 0x1},
 462
 463         /* 96k */
 464         {12288000, 96000, 128, 0xe, 0x0},
 465         {18432000, 96000, 192, 0xf, 0x0},
 466         {12000000, 96000, 125, 0xe, 0x1},
 467 };
 468
 469 static inline int get_coeff(int mclk, int rate)
 470 {
 471         int i;
 472
 473         for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
 474                 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
 475                         return i;
 476         }
 477
 478         printk(KERN_ERR "wm8750: could not get coeff for mclk %d @ rate %d\n",
 479                 mclk, rate);
 480         return -EINVAL;
 481 }
 482
 483 static int wm8750_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 484                 int clk_id, unsigned int freq, int dir)
 485 {
 486         struct snd_soc_codec *codec = codec_dai->codec;
 487         struct wm8750_priv *wm8750 = snd_soc_codec_get_drvdata(codec);
 488
 489         switch (freq) {
 490         case 11289600:
 491         case 12000000:
 492         case 12288000:
 493         case 16934400:
 494         case 18432000:
 495                 wm8750->sysclk = freq;
 496                 return 0;
 497         }
 498         return -EINVAL;
 499 }
 500
 501 static int wm8750_set_dai_fmt(struct snd_soc_dai *codec_dai,
 502                 unsigned int fmt)
 503 {
 504         struct snd_soc_codec *codec = codec_dai->codec;
 505         u16 iface = 0;
 506
 507         /* set master/slave audio interface */
 508         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 509         case SND_SOC_DAIFMT_CBM_CFM:
 510                 iface = 0x0040;
 511                 break;
 512         case SND_SOC_DAIFMT_CBS_CFS:
 513                 break;
 514         default:
 515                 return -EINVAL;
 516         }
 517
 518         /* interface format */
 519         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 520         case SND_SOC_DAIFMT_I2S:
 521                 iface |= 0x0002;
 522                 break;
 523         case SND_SOC_DAIFMT_RIGHT_J:
 524                 break;
 525         case SND_SOC_DAIFMT_LEFT_J:
 526                 iface |= 0x0001;
 527                 break;
 528         case SND_SOC_DAIFMT_DSP_A:
 529                 iface |= 0x0003;
 530                 break;
 531         case SND_SOC_DAIFMT_DSP_B:
 532                 iface |= 0x0013;
 533                 break;
 534         default:
 535                 return -EINVAL;
 536         }
 537
 538         /* clock inversion */
 539         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 540         case SND_SOC_DAIFMT_NB_NF:
 541                 break;
 542         case SND_SOC_DAIFMT_IB_IF:
 543                 iface |= 0x0090;
 544                 break;
 545         case SND_SOC_DAIFMT_IB_NF:
 546                 iface |= 0x0080;
 547                 break;
 548         case SND_SOC_DAIFMT_NB_IF:
 549                 iface |= 0x0010;
 550                 break;
 551         default:
 552                 return -EINVAL;
 553         }
 554
 555         snd_soc_write(codec, WM8750_IFACE, iface);
 556         return 0;
 557 }
 558
 559 static int wm8750_pcm_hw_params(struct snd_pcm_substream *substream,
 560                                 struct snd_pcm_hw_params *params,
 561                                 struct snd_soc_dai *dai)
 562 {
 563         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 564         struct snd_soc_codec *codec = rtd->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 static struct snd_soc_dai_driver wm8750_dai = {
 653         .name = "wm8750-hifi",
 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
 669 static int wm8750_suspend(struct snd_soc_codec *codec, pm_message_t state)
 670 {
 671         wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF);
 672         return 0;
 673 }
 674
 675 static int wm8750_resume(struct snd_soc_codec *codec)
 676 {
 677         int i;
 678         u8 data[2];
 679         u16 *cache = codec->reg_cache;
 680
 681         /* Sync reg_cache with the hardware */
 682         for (i = 0; i < ARRAY_SIZE(wm8750_reg); i++) {
 683                 if (i == WM8750_RESET)
 684                         continue;
 685                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 686                 data[1] = cache[i] & 0x00ff;
 687                 codec->hw_write(codec->control_data, data, 2);
 688         }
 689
 690         wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 691
 692         return 0;
 693 }
 694
 695 static int wm8750_probe(struct snd_soc_codec *codec)
 696 {
 697         struct wm8750_priv *wm8750 = snd_soc_codec_get_drvdata(codec);
 698         int reg, ret;
 699
 700         codec->control_data = wm8750->control_data;
 701         ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8750->control_type);
 702         if (ret < 0) {
 703                 printk(KERN_ERR "wm8750: failed to set cache I/O: %d\n", ret);
 704                 return ret;
 705         }
 706
 707         ret = wm8750_reset(codec);
 708         if (ret < 0) {
 709                 printk(KERN_ERR "wm8750: failed to reset: %d\n", ret);
 710                 return ret;
 711         }
 712
 713         /* charge output caps */
 714         wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 715
 716         /* set the update bits */
 717         reg = snd_soc_read(codec, WM8750_LDAC);
 718         snd_soc_write(codec, WM8750_LDAC, reg | 0x0100);
 719         reg = snd_soc_read(codec, WM8750_RDAC);
 720         snd_soc_write(codec, WM8750_RDAC, reg | 0x0100);
 721         reg = snd_soc_read(codec, WM8750_LOUT1V);
 722         snd_soc_write(codec, WM8750_LOUT1V, reg | 0x0100);
 723         reg = snd_soc_read(codec, WM8750_ROUT1V);
 724         snd_soc_write(codec, WM8750_ROUT1V, reg | 0x0100);
 725         reg = snd_soc_read(codec, WM8750_LOUT2V);
 726         snd_soc_write(codec, WM8750_LOUT2V, reg | 0x0100);
 727         reg = snd_soc_read(codec, WM8750_ROUT2V);
 728         snd_soc_write(codec, WM8750_ROUT2V, reg | 0x0100);
 729         reg = snd_soc_read(codec, WM8750_LINVOL);
 730         snd_soc_write(codec, WM8750_LINVOL, reg | 0x0100);
 731         reg = snd_soc_read(codec, WM8750_RINVOL);
 732         snd_soc_write(codec, WM8750_RINVOL, reg | 0x0100);
 733
 734         snd_soc_add_controls(codec, wm8750_snd_controls,
 735                                 ARRAY_SIZE(wm8750_snd_controls));
 736         wm8750_add_widgets(codec);
 737         return ret;
 738 }
 739
 740 static int wm8750_remove(struct snd_soc_codec *codec)
 741 {
 742         wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF);
 743         return 0;
 744 }
 745
 746 static struct snd_soc_codec_driver soc_codec_dev_wm8750 = {
 747         .probe =        wm8750_probe,
 748         .remove =       wm8750_remove,
 749         .suspend =      wm8750_suspend,
 750         .resume =       wm8750_resume,
 751         .set_bias_level = wm8750_set_bias_level,
 752         .reg_cache_size = sizeof(wm8750_reg),
 753         .reg_word_size = sizeof(u16),
 754         .reg_cache_default = wm8750_reg,
 755 };
 756
 757 #if defined(CONFIG_SPI_MASTER)
 758 static int __devinit wm8750_spi_probe(struct spi_device *spi)
 759 {
 760         struct wm8750_priv *wm8750;
 761         int ret;
 762
 763         wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
 764         if (wm8750 == NULL)
 765                 return -ENOMEM;
 766
 767         wm8750->control_data = spi;
 768         wm8750->control_type = SND_SOC_SPI;
 769         spi_set_drvdata(spi, wm8750);
 770
 771         ret = snd_soc_register_codec(&spi->dev,
 772                         &soc_codec_dev_wm8750, &wm8750_dai, 1);
 773         if (ret < 0)
 774                 kfree(wm8750);
 775         return ret;
 776 }
 777
 778 static int __devexit wm8750_spi_remove(struct spi_device *spi)
 779 {
 780         snd_soc_unregister_codec(&spi->dev);
 781         kfree(spi_get_drvdata(spi));
 782         return 0;
 783 }
 784
 785 static struct spi_driver wm8750_spi_driver = {
 786         .driver = {
 787                 .name   = "wm8750-codec",
 788                 .bus    = &spi_bus_type,
 789                 .owner  = THIS_MODULE,
 790         },
 791         .probe          = wm8750_spi_probe,
 792         .remove         = __devexit_p(wm8750_spi_remove),
 793 };
 794 #endif /* CONFIG_SPI_MASTER */
 795
 796 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 797 static __devinit int wm8750_i2c_probe(struct i2c_client *i2c,
 798                                       const struct i2c_device_id *id)
 799 {
 800         struct wm8750_priv *wm8750;
 801         int ret;
 802
 803         wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
 804         if (wm8750 == NULL)
 805                 return -ENOMEM;
 806
 807         i2c_set_clientdata(i2c, wm8750);
 808         wm8750->control_data = i2c;
 809         wm8750->control_type = SND_SOC_I2C;
 810
 811         ret =  snd_soc_register_codec(&i2c->dev,
 812                         &soc_codec_dev_wm8750, &wm8750_dai, 1);
 813         if (ret < 0)
 814                 kfree(wm8750);
 815         return ret;
 816 }
 817
 818 static __devexit int wm8750_i2c_remove(struct i2c_client *client)
 819 {
 820         snd_soc_unregister_codec(&client->dev);
 821         kfree(i2c_get_clientdata(client));
 822         return 0;
 823 }
 824
 825 static const struct i2c_device_id wm8750_i2c_id[] = {
 826         { "wm8750", 0 },
 827         { "wm8987", 0 },
 828         { }
 829 };
 830 MODULE_DEVICE_TABLE(i2c, wm8750_i2c_id);
 831
 832 static struct i2c_driver wm8750_i2c_driver = {
 833         .driver = {
 834                 .name = "wm8750-codec",
 835                 .owner = THIS_MODULE,
 836         },
 837         .probe =    wm8750_i2c_probe,
 838         .remove =   __devexit_p(wm8750_i2c_remove),
 839         .id_table = wm8750_i2c_id,
 840 };
 841 #endif
 842
 843 static int __init wm8750_modinit(void)
 844 {
 845         int ret = 0;
 846 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 847         ret = i2c_add_driver(&wm8750_i2c_driver);
 848         if (ret != 0) {
 849                 printk(KERN_ERR "Failed to register wm8750 I2C driver: %d\n",
 850                        ret);
 851         }
 852 #endif
 853 #if defined(CONFIG_SPI_MASTER)
 854         ret = spi_register_driver(&wm8750_spi_driver);
 855         if (ret != 0) {
 856                 printk(KERN_ERR "Failed to register wm8750 SPI driver: %d\n",
 857                        ret);
 858         }
 859 #endif
 860         return ret;
 861 }
 862 module_init(wm8750_modinit);
 863
 864 static void __exit wm8750_exit(void)
 865 {
 866 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 867         i2c_del_driver(&wm8750_i2c_driver);
 868 #endif
 869 #if defined(CONFIG_SPI_MASTER)
 870         spi_unregister_driver(&wm8750_spi_driver);
 871 #endif
 872 }
 873 module_exit(wm8750_exit);
 874
 875 MODULE_DESCRIPTION("ASoC WM8750 driver");
 876 MODULE_AUTHOR("Liam Girdwood");
 877 MODULE_LICENSE("GPL");