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 #define WM8750_VERSION "0.12"
  34
  35 /* codec private data */
  36 struct wm8750_priv {
  37         unsigned int sysclk;
  38 };
  39
  40 /*
  41  * wm8750 register cache
  42  * We can't read the WM8750 register space when we
  43  * are using 2 wire for device control, so we cache them instead.
  44  */
  45 static const u16 wm8750_reg[] = {
  46         0x0097, 0x0097, 0x0079, 0x0079,  /*  0 */
  47         0x0000, 0x0008, 0x0000, 0x000a,  /*  4 */
  48         0x0000, 0x0000, 0x00ff, 0x00ff,  /*  8 */
  49         0x000f, 0x000f, 0x0000, 0x0000,  /* 12 */
  50         0x0000, 0x007b, 0x0000, 0x0032,  /* 16 */
  51         0x0000, 0x00c3, 0x00c3, 0x00c0,  /* 20 */
  52         0x0000, 0x0000, 0x0000, 0x0000,  /* 24 */
  53         0x0000, 0x0000, 0x0000, 0x0000,  /* 28 */
  54         0x0000, 0x0000, 0x0050, 0x0050,  /* 32 */
  55         0x0050, 0x0050, 0x0050, 0x0050,  /* 36 */
  56         0x0079, 0x0079, 0x0079,          /* 40 */
  57 };
  58
  59 #define wm8750_reset(c) snd_soc_write(c, WM8750_RESET, 0)
  60
  61 /*
  62  * WM8750 Controls
  63  */
  64 static const char *wm8750_bass[] = {"Linear Control", "Adaptive Boost"};
  65 static const char *wm8750_bass_filter[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" };
  66 static const char *wm8750_treble[] = {"8kHz", "4kHz"};
  67 static const char *wm8750_3d_lc[] = {"200Hz", "500Hz"};
  68 static const char *wm8750_3d_uc[] = {"2.2kHz", "1.5kHz"};
  69 static const char *wm8750_3d_func[] = {"Capture", "Playback"};
  70 static const char *wm8750_alc_func[] = {"Off", "Right", "Left", "Stereo"};
  71 static const char *wm8750_ng_type[] = {"Constant PGA Gain",
  72         "Mute ADC Output"};
  73 static const char *wm8750_line_mux[] = {"Line 1", "Line 2", "Line 3", "PGA",
  74         "Differential"};
  75 static const char *wm8750_pga_sel[] = {"Line 1", "Line 2", "Line 3",
  76         "Differential"};
  77 static const char *wm8750_out3[] = {"VREF", "ROUT1 + Vol", "MonoOut",
  78         "ROUT1"};
  79 static const char *wm8750_diff_sel[] = {"Line 1", "Line 2"};
  80 static const char *wm8750_adcpol[] = {"Normal", "L Invert", "R Invert",
  81         "L + R Invert"};
  82 static const char *wm8750_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
  83 static const char *wm8750_mono_mux[] = {"Stereo", "Mono (Left)",
  84         "Mono (Right)", "Digital Mono"};
  85
  86 static const struct soc_enum wm8750_enum[] = {
  87 SOC_ENUM_SINGLE(WM8750_BASS, 7, 2, wm8750_bass),
  88 SOC_ENUM_SINGLE(WM8750_BASS, 6, 2, wm8750_bass_filter),
  89 SOC_ENUM_SINGLE(WM8750_TREBLE, 6, 2, wm8750_treble),
  90 SOC_ENUM_SINGLE(WM8750_3D, 5, 2, wm8750_3d_lc),
  91 SOC_ENUM_SINGLE(WM8750_3D, 6, 2, wm8750_3d_uc),
  92 SOC_ENUM_SINGLE(WM8750_3D, 7, 2, wm8750_3d_func),
  93 SOC_ENUM_SINGLE(WM8750_ALC1, 7, 4, wm8750_alc_func),
  94 SOC_ENUM_SINGLE(WM8750_NGATE, 1, 2, wm8750_ng_type),
  95 SOC_ENUM_SINGLE(WM8750_LOUTM1, 0, 5, wm8750_line_mux),
  96 SOC_ENUM_SINGLE(WM8750_ROUTM1, 0, 5, wm8750_line_mux),
  97 SOC_ENUM_SINGLE(WM8750_LADCIN, 6, 4, wm8750_pga_sel), /* 10 */
  98 SOC_ENUM_SINGLE(WM8750_RADCIN, 6, 4, wm8750_pga_sel),
  99 SOC_ENUM_SINGLE(WM8750_ADCTL2, 7, 4, wm8750_out3),
 100 SOC_ENUM_SINGLE(WM8750_ADCIN, 8, 2, wm8750_diff_sel),
 101 SOC_ENUM_SINGLE(WM8750_ADCDAC, 5, 4, wm8750_adcpol),
 102 SOC_ENUM_SINGLE(WM8750_ADCDAC, 1, 4, wm8750_deemph),
 103 SOC_ENUM_SINGLE(WM8750_ADCIN, 6, 4, wm8750_mono_mux), /* 16 */
 104
 105 };
 106
 107 static const struct snd_kcontrol_new wm8750_snd_controls[] = {
 108
 109 SOC_DOUBLE_R("Capture Volume", WM8750_LINVOL, WM8750_RINVOL, 0, 63, 0),
 110 SOC_DOUBLE_R("Capture ZC Switch", WM8750_LINVOL, WM8750_RINVOL, 6, 1, 0),
 111 SOC_DOUBLE_R("Capture Switch", WM8750_LINVOL, WM8750_RINVOL, 7, 1, 1),
 112
 113 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8750_LOUT1V,
 114         WM8750_ROUT1V, 7, 1, 0),
 115 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8750_LOUT2V,
 116         WM8750_ROUT2V, 7, 1, 0),
 117
 118 SOC_ENUM("Playback De-emphasis", wm8750_enum[15]),
 119
 120 SOC_ENUM("Capture Polarity", wm8750_enum[14]),
 121 SOC_SINGLE("Playback 6dB Attenuate", WM8750_ADCDAC, 7, 1, 0),
 122 SOC_SINGLE("Capture 6dB Attenuate", WM8750_ADCDAC, 8, 1, 0),
 123
 124 SOC_DOUBLE_R("PCM Volume", WM8750_LDAC, WM8750_RDAC, 0, 255, 0),
 125
 126 SOC_ENUM("Bass Boost", wm8750_enum[0]),
 127 SOC_ENUM("Bass Filter", wm8750_enum[1]),
 128 SOC_SINGLE("Bass Volume", WM8750_BASS, 0, 15, 1),
 129
 130 SOC_SINGLE("Treble Volume", WM8750_TREBLE, 0, 15, 1),
 131 SOC_ENUM("Treble Cut-off", wm8750_enum[2]),
 132
 133 SOC_SINGLE("3D Switch", WM8750_3D, 0, 1, 0),
 134 SOC_SINGLE("3D Volume", WM8750_3D, 1, 15, 0),
 135 SOC_ENUM("3D Lower Cut-off", wm8750_enum[3]),
 136 SOC_ENUM("3D Upper Cut-off", wm8750_enum[4]),
 137 SOC_ENUM("3D Mode", wm8750_enum[5]),
 138
 139 SOC_SINGLE("ALC Capture Target Volume", WM8750_ALC1, 0, 7, 0),
 140 SOC_SINGLE("ALC Capture Max Volume", WM8750_ALC1, 4, 7, 0),
 141 SOC_ENUM("ALC Capture Function", wm8750_enum[6]),
 142 SOC_SINGLE("ALC Capture ZC Switch", WM8750_ALC2, 7, 1, 0),
 143 SOC_SINGLE("ALC Capture Hold Time", WM8750_ALC2, 0, 15, 0),
 144 SOC_SINGLE("ALC Capture Decay Time", WM8750_ALC3, 4, 15, 0),
 145 SOC_SINGLE("ALC Capture Attack Time", WM8750_ALC3, 0, 15, 0),
 146 SOC_SINGLE("ALC Capture NG Threshold", WM8750_NGATE, 3, 31, 0),
 147 SOC_ENUM("ALC Capture NG Type", wm8750_enum[4]),
 148 SOC_SINGLE("ALC Capture NG Switch", WM8750_NGATE, 0, 1, 0),
 149
 150 SOC_SINGLE("Left ADC Capture Volume", WM8750_LADC, 0, 255, 0),
 151 SOC_SINGLE("Right ADC Capture Volume", WM8750_RADC, 0, 255, 0),
 152
 153 SOC_SINGLE("ZC Timeout Switch", WM8750_ADCTL1, 0, 1, 0),
 154 SOC_SINGLE("Playback Invert Switch", WM8750_ADCTL1, 1, 1, 0),
 155
 156 SOC_SINGLE("Right Speaker Playback Invert Switch", WM8750_ADCTL2, 4, 1, 0),
 157
 158 /* Unimplemented */
 159 /* ADCDAC Bit 0 - ADCHPD */
 160 /* ADCDAC Bit 4 - HPOR */
 161 /* ADCTL1 Bit 2,3 - DATSEL */
 162 /* ADCTL1 Bit 4,5 - DMONOMIX */
 163 /* ADCTL1 Bit 6,7 - VSEL */
 164 /* ADCTL2 Bit 2 - LRCM */
 165 /* ADCTL2 Bit 3 - TRI */
 166 /* ADCTL3 Bit 5 - HPFLREN */
 167 /* ADCTL3 Bit 6 - VROI */
 168 /* ADCTL3 Bit 7,8 - ADCLRM */
 169 /* ADCIN Bit 4 - LDCM */
 170 /* ADCIN Bit 5 - RDCM */
 171
 172 SOC_DOUBLE_R("Mic Boost", WM8750_LADCIN, WM8750_RADCIN, 4, 3, 0),
 173
 174 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8750_LOUTM1,
 175         WM8750_LOUTM2, 4, 7, 1),
 176 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8750_ROUTM1,
 177         WM8750_ROUTM2, 4, 7, 1),
 178 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8750_MOUTM1,
 179         WM8750_MOUTM2, 4, 7, 1),
 180
 181 SOC_SINGLE("Mono Playback ZC Switch", WM8750_MOUTV, 7, 1, 0),
 182
 183 SOC_DOUBLE_R("Headphone Playback Volume", WM8750_LOUT1V, WM8750_ROUT1V,
 184         0, 127, 0),
 185 SOC_DOUBLE_R("Speaker Playback Volume", WM8750_LOUT2V, WM8750_ROUT2V,
 186         0, 127, 0),
 187
 188 SOC_SINGLE("Mono Playback Volume", WM8750_MOUTV, 0, 127, 0),
 189
 190 };
 191
 192 /*
 193  * DAPM Controls
 194  */
 195
 196 /* Left Mixer */
 197 static const struct snd_kcontrol_new wm8750_left_mixer_controls[] = {
 198 SOC_DAPM_SINGLE("Playback Switch", WM8750_LOUTM1, 8, 1, 0),
 199 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_LOUTM1, 7, 1, 0),
 200 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_LOUTM2, 8, 1, 0),
 201 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_LOUTM2, 7, 1, 0),
 202 };
 203
 204 /* Right Mixer */
 205 static const struct snd_kcontrol_new wm8750_right_mixer_controls[] = {
 206 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_ROUTM1, 8, 1, 0),
 207 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_ROUTM1, 7, 1, 0),
 208 SOC_DAPM_SINGLE("Playback Switch", WM8750_ROUTM2, 8, 1, 0),
 209 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_ROUTM2, 7, 1, 0),
 210 };
 211
 212 /* Mono Mixer */
 213 static const struct snd_kcontrol_new wm8750_mono_mixer_controls[] = {
 214 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_MOUTM1, 8, 1, 0),
 215 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_MOUTM1, 7, 1, 0),
 216 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_MOUTM2, 8, 1, 0),
 217 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_MOUTM2, 7, 1, 0),
 218 };
 219
 220 /* Left Line Mux */
 221 static const struct snd_kcontrol_new wm8750_left_line_controls =
 222 SOC_DAPM_ENUM("Route", wm8750_enum[8]);
 223
 224 /* Right Line Mux */
 225 static const struct snd_kcontrol_new wm8750_right_line_controls =
 226 SOC_DAPM_ENUM("Route", wm8750_enum[9]);
 227
 228 /* Left PGA Mux */
 229 static const struct snd_kcontrol_new wm8750_left_pga_controls =
 230 SOC_DAPM_ENUM("Route", wm8750_enum[10]);
 231
 232 /* Right PGA Mux */
 233 static const struct snd_kcontrol_new wm8750_right_pga_controls =
 234 SOC_DAPM_ENUM("Route", wm8750_enum[11]);
 235
 236 /* Out 3 Mux */
 237 static const struct snd_kcontrol_new wm8750_out3_controls =
 238 SOC_DAPM_ENUM("Route", wm8750_enum[12]);
 239
 240 /* Differential Mux */
 241 static const struct snd_kcontrol_new wm8750_diffmux_controls =
 242 SOC_DAPM_ENUM("Route", wm8750_enum[13]);
 243
 244 /* Mono ADC Mux */
 245 static const struct snd_kcontrol_new wm8750_monomux_controls =
 246 SOC_DAPM_ENUM("Route", wm8750_enum[16]);
 247
 248 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
 249         SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
 250                 &wm8750_left_mixer_controls[0],
 251                 ARRAY_SIZE(wm8750_left_mixer_controls)),
 252         SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
 253                 &wm8750_right_mixer_controls[0],
 254                 ARRAY_SIZE(wm8750_right_mixer_controls)),
 255         SND_SOC_DAPM_MIXER("Mono Mixer", WM8750_PWR2, 2, 0,
 256                 &wm8750_mono_mixer_controls[0],
 257                 ARRAY_SIZE(wm8750_mono_mixer_controls)),
 258
 259         SND_SOC_DAPM_PGA("Right Out 2", WM8750_PWR2, 3, 0, NULL, 0),
 260         SND_SOC_DAPM_PGA("Left Out 2", WM8750_PWR2, 4, 0, NULL, 0),
 261         SND_SOC_DAPM_PGA("Right Out 1", WM8750_PWR2, 5, 0, NULL, 0),
 262         SND_SOC_DAPM_PGA("Left Out 1", WM8750_PWR2, 6, 0, NULL, 0),
 263         SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8750_PWR2, 7, 0),
 264         SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8750_PWR2, 8, 0),
 265
 266         SND_SOC_DAPM_MICBIAS("Mic Bias", WM8750_PWR1, 1, 0),
 267         SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8750_PWR1, 2, 0),
 268         SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8750_PWR1, 3, 0),
 269
 270         SND_SOC_DAPM_MUX("Left PGA Mux", WM8750_PWR1, 5, 0,
 271                 &wm8750_left_pga_controls),
 272         SND_SOC_DAPM_MUX("Right PGA Mux", WM8750_PWR1, 4, 0,
 273                 &wm8750_right_pga_controls),
 274         SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
 275                 &wm8750_left_line_controls),
 276         SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
 277                 &wm8750_right_line_controls),
 278
 279         SND_SOC_DAPM_MUX("Out3 Mux", SND_SOC_NOPM, 0, 0, &wm8750_out3_controls),
 280         SND_SOC_DAPM_PGA("Out 3", WM8750_PWR2, 1, 0, NULL, 0),
 281         SND_SOC_DAPM_PGA("Mono Out 1", WM8750_PWR2, 2, 0, NULL, 0),
 282
 283         SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
 284                 &wm8750_diffmux_controls),
 285         SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
 286                 &wm8750_monomux_controls),
 287         SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
 288                 &wm8750_monomux_controls),
 289
 290         SND_SOC_DAPM_OUTPUT("LOUT1"),
 291         SND_SOC_DAPM_OUTPUT("ROUT1"),
 292         SND_SOC_DAPM_OUTPUT("LOUT2"),
 293         SND_SOC_DAPM_OUTPUT("ROUT2"),
 294         SND_SOC_DAPM_OUTPUT("MONO1"),
 295         SND_SOC_DAPM_OUTPUT("OUT3"),
 296         SND_SOC_DAPM_OUTPUT("VREF"),
 297
 298         SND_SOC_DAPM_INPUT("LINPUT1"),
 299         SND_SOC_DAPM_INPUT("LINPUT2"),
 300         SND_SOC_DAPM_INPUT("LINPUT3"),
 301         SND_SOC_DAPM_INPUT("RINPUT1"),
 302         SND_SOC_DAPM_INPUT("RINPUT2"),
 303         SND_SOC_DAPM_INPUT("RINPUT3"),
 304 };
 305
 306 static const struct snd_soc_dapm_route audio_map[] = {
 307         /* left mixer */
 308         {"Left Mixer", "Playback Switch", "Left DAC"},
 309         {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
 310         {"Left Mixer", "Right Playback Switch", "Right DAC"},
 311         {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
 312
 313         /* right mixer */
 314         {"Right Mixer", "Left Playback Switch", "Left DAC"},
 315         {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
 316         {"Right Mixer", "Playback Switch", "Right DAC"},
 317         {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
 318
 319         /* left out 1 */
 320         {"Left Out 1", NULL, "Left Mixer"},
 321         {"LOUT1", NULL, "Left Out 1"},
 322
 323         /* left out 2 */
 324         {"Left Out 2", NULL, "Left Mixer"},
 325         {"LOUT2", NULL, "Left Out 2"},
 326
 327         /* right out 1 */
 328         {"Right Out 1", NULL, "Right Mixer"},
 329         {"ROUT1", NULL, "Right Out 1"},
 330
 331         /* right out 2 */
 332         {"Right Out 2", NULL, "Right Mixer"},
 333         {"ROUT2", NULL, "Right Out 2"},
 334
 335         /* mono mixer */
 336         {"Mono Mixer", "Left Playback Switch", "Left DAC"},
 337         {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
 338         {"Mono Mixer", "Right Playback Switch", "Right DAC"},
 339         {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
 340
 341         /* mono out */
 342         {"Mono Out 1", NULL, "Mono Mixer"},
 343         {"MONO1", NULL, "Mono Out 1"},
 344
 345         /* out 3 */
 346         {"Out3 Mux", "VREF", "VREF"},
 347         {"Out3 Mux", "ROUT1 + Vol", "ROUT1"},
 348         {"Out3 Mux", "ROUT1", "Right Mixer"},
 349         {"Out3 Mux", "MonoOut", "MONO1"},
 350         {"Out 3", NULL, "Out3 Mux"},
 351         {"OUT3", NULL, "Out 3"},
 352
 353         /* Left Line Mux */
 354         {"Left Line Mux", "Line 1", "LINPUT1"},
 355         {"Left Line Mux", "Line 2", "LINPUT2"},
 356         {"Left Line Mux", "Line 3", "LINPUT3"},
 357         {"Left Line Mux", "PGA", "Left PGA Mux"},
 358         {"Left Line Mux", "Differential", "Differential Mux"},
 359
 360         /* Right Line Mux */
 361         {"Right Line Mux", "Line 1", "RINPUT1"},
 362         {"Right Line Mux", "Line 2", "RINPUT2"},
 363         {"Right Line Mux", "Line 3", "RINPUT3"},
 364         {"Right Line Mux", "PGA", "Right PGA Mux"},
 365         {"Right Line Mux", "Differential", "Differential Mux"},
 366
 367         /* Left PGA Mux */
 368         {"Left PGA Mux", "Line 1", "LINPUT1"},
 369         {"Left PGA Mux", "Line 2", "LINPUT2"},
 370         {"Left PGA Mux", "Line 3", "LINPUT3"},
 371         {"Left PGA Mux", "Differential", "Differential Mux"},
 372
 373         /* Right PGA Mux */
 374         {"Right PGA Mux", "Line 1", "RINPUT1"},
 375         {"Right PGA Mux", "Line 2", "RINPUT2"},
 376         {"Right PGA Mux", "Line 3", "RINPUT3"},
 377         {"Right PGA Mux", "Differential", "Differential Mux"},
 378
 379         /* Differential Mux */
 380         {"Differential Mux", "Line 1", "LINPUT1"},
 381         {"Differential Mux", "Line 1", "RINPUT1"},
 382         {"Differential Mux", "Line 2", "LINPUT2"},
 383         {"Differential Mux", "Line 2", "RINPUT2"},
 384
 385         /* Left ADC Mux */
 386         {"Left ADC Mux", "Stereo", "Left PGA Mux"},
 387         {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
 388         {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
 389
 390         /* Right ADC Mux */
 391         {"Right ADC Mux", "Stereo", "Right PGA Mux"},
 392         {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
 393         {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
 394
 395         /* ADC */
 396         {"Left ADC", NULL, "Left ADC Mux"},
 397         {"Right ADC", NULL, "Right ADC Mux"},
 398 };
 399
 400 static int wm8750_add_widgets(struct snd_soc_codec *codec)
 401 {
 402         snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
 403                                   ARRAY_SIZE(wm8750_dapm_widgets));
 404
 405         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 406
 407         return 0;
 408 }
 409
 410 struct _coeff_div {
 411         u32 mclk;
 412         u32 rate;
 413         u16 fs;
 414         u8 sr:5;
 415         u8 usb:1;
 416 };
 417
 418 /* codec hifi mclk clock divider coefficients */
 419 static const struct _coeff_div coeff_div[] = {
 420         /* 8k */
 421         {12288000, 8000, 1536, 0x6, 0x0},
 422         {11289600, 8000, 1408, 0x16, 0x0},
 423         {18432000, 8000, 2304, 0x7, 0x0},
 424         {16934400, 8000, 2112, 0x17, 0x0},
 425         {12000000, 8000, 1500, 0x6, 0x1},
 426
 427         /* 11.025k */
 428         {11289600, 11025, 1024, 0x18, 0x0},
 429         {16934400, 11025, 1536, 0x19, 0x0},
 430         {12000000, 11025, 1088, 0x19, 0x1},
 431
 432         /* 16k */
 433         {12288000, 16000, 768, 0xa, 0x0},
 434         {18432000, 16000, 1152, 0xb, 0x0},
 435         {12000000, 16000, 750, 0xa, 0x1},
 436
 437         /* 22.05k */
 438         {11289600, 22050, 512, 0x1a, 0x0},
 439         {16934400, 22050, 768, 0x1b, 0x0},
 440         {12000000, 22050, 544, 0x1b, 0x1},
 441
 442         /* 32k */
 443         {12288000, 32000, 384, 0xc, 0x0},
 444         {18432000, 32000, 576, 0xd, 0x0},
 445         {12000000, 32000, 375, 0xa, 0x1},
 446
 447         /* 44.1k */
 448         {11289600, 44100, 256, 0x10, 0x0},
 449         {16934400, 44100, 384, 0x11, 0x0},
 450         {12000000, 44100, 272, 0x11, 0x1},
 451
 452         /* 48k */
 453         {12288000, 48000, 256, 0x0, 0x0},
 454         {18432000, 48000, 384, 0x1, 0x0},
 455         {12000000, 48000, 250, 0x0, 0x1},
 456
 457         /* 88.2k */
 458         {11289600, 88200, 128, 0x1e, 0x0},
 459         {16934400, 88200, 192, 0x1f, 0x0},
 460         {12000000, 88200, 136, 0x1f, 0x1},
 461
 462         /* 96k */
 463         {12288000, 96000, 128, 0xe, 0x0},
 464         {18432000, 96000, 192, 0xf, 0x0},
 465         {12000000, 96000, 125, 0xe, 0x1},
 466 };
 467
 468 static inline int get_coeff(int mclk, int rate)
 469 {
 470         int i;
 471
 472         for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
 473                 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
 474                         return i;
 475         }
 476
 477         printk(KERN_ERR "wm8750: could not get coeff for mclk %d @ rate %d\n",
 478                 mclk, rate);
 479         return -EINVAL;
 480 }
 481
 482 static int wm8750_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 483                 int clk_id, unsigned int freq, int dir)
 484 {
 485         struct snd_soc_codec *codec = codec_dai->codec;
 486         struct wm8750_priv *wm8750 = 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         return ret;
 776
 777 err:
 778         kfree(codec->reg_cache);
 779         return ret;
 780 }
 781
 782 /* If the i2c layer weren't so broken, we could pass this kind of data
 783    around */
 784 static struct snd_soc_device *wm8750_socdev;
 785
 786 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 787
 788 /*
 789  * WM8750 2 wire address is determined by GPIO5
 790  * state during powerup.
 791  *    low  = 0x1a
 792  *    high = 0x1b
 793  */
 794
 795 static int wm8750_i2c_probe(struct i2c_client *i2c,
 796                             const struct i2c_device_id *id)
 797 {
 798         struct snd_soc_device *socdev = wm8750_socdev;
 799         struct snd_soc_codec *codec = socdev->card->codec;
 800         int ret;
 801
 802         i2c_set_clientdata(i2c, codec);
 803         codec->control_data = i2c;
 804
 805         ret = wm8750_init(socdev, SND_SOC_I2C);
 806         if (ret < 0)
 807                 pr_err("failed to initialise WM8750\n");
 808
 809         return ret;
 810 }
 811
 812 static int wm8750_i2c_remove(struct i2c_client *client)
 813 {
 814         struct snd_soc_codec *codec = i2c_get_clientdata(client);
 815         kfree(codec->reg_cache);
 816         return 0;
 817 }
 818
 819 static const struct i2c_device_id wm8750_i2c_id[] = {
 820         { "wm8750", 0 },
 821         { }
 822 };
 823 MODULE_DEVICE_TABLE(i2c, wm8750_i2c_id);
 824
 825 static struct i2c_driver wm8750_i2c_driver = {
 826         .driver = {
 827                 .name = "WM8750 I2C Codec",
 828                 .owner = THIS_MODULE,
 829         },
 830         .probe =    wm8750_i2c_probe,
 831         .remove =   wm8750_i2c_remove,
 832         .id_table = wm8750_i2c_id,
 833 };
 834
 835 static int wm8750_add_i2c_device(struct platform_device *pdev,
 836                                  const struct wm8750_setup_data *setup)
 837 {
 838         struct i2c_board_info info;
 839         struct i2c_adapter *adapter;
 840         struct i2c_client *client;
 841         int ret;
 842
 843         ret = i2c_add_driver(&wm8750_i2c_driver);
 844         if (ret != 0) {
 845                 dev_err(&pdev->dev, "can't add i2c driver\n");
 846                 return ret;
 847         }
 848
 849         memset(&info, 0, sizeof(struct i2c_board_info));
 850         info.addr = setup->i2c_address;
 851         strlcpy(info.type, "wm8750", I2C_NAME_SIZE);
 852
 853         adapter = i2c_get_adapter(setup->i2c_bus);
 854         if (!adapter) {
 855                 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
 856                         setup->i2c_bus);
 857                 goto err_driver;
 858         }
 859
 860         client = i2c_new_device(adapter, &info);
 861         i2c_put_adapter(adapter);
 862         if (!client) {
 863                 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
 864                         (unsigned int)info.addr);
 865                 goto err_driver;
 866         }
 867
 868         return 0;
 869
 870 err_driver:
 871         i2c_del_driver(&wm8750_i2c_driver);
 872         return -ENODEV;
 873 }
 874 #endif
 875
 876 #if defined(CONFIG_SPI_MASTER)
 877 static int __devinit wm8750_spi_probe(struct spi_device *spi)
 878 {
 879         struct snd_soc_device *socdev = wm8750_socdev;
 880         struct snd_soc_codec *codec = socdev->card->codec;
 881         int ret;
 882
 883         codec->control_data = spi;
 884
 885         ret = wm8750_init(socdev, SND_SOC_SPI);
 886         if (ret < 0)
 887                 dev_err(&spi->dev, "failed to initialise WM8750\n");
 888
 889         return ret;
 890 }
 891
 892 static int __devexit wm8750_spi_remove(struct spi_device *spi)
 893 {
 894         return 0;
 895 }
 896
 897 static struct spi_driver wm8750_spi_driver = {
 898         .driver = {
 899                 .name   = "wm8750",
 900                 .bus    = &spi_bus_type,
 901                 .owner  = THIS_MODULE,
 902         },
 903         .probe          = wm8750_spi_probe,
 904         .remove         = __devexit_p(wm8750_spi_remove),
 905 };
 906 #endif
 907
 908 static int wm8750_probe(struct platform_device *pdev)
 909 {
 910         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 911         struct wm8750_setup_data *setup = socdev->codec_data;
 912         struct snd_soc_codec *codec;
 913         struct wm8750_priv *wm8750;
 914         int ret;
 915
 916         pr_info("WM8750 Audio Codec %s", WM8750_VERSION);
 917         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 918         if (codec == NULL)
 919                 return -ENOMEM;
 920
 921         wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
 922         if (wm8750 == NULL) {
 923                 kfree(codec);
 924                 return -ENOMEM;
 925         }
 926
 927         codec->private_data = wm8750;
 928         socdev->card->codec = codec;
 929         mutex_init(&codec->mutex);
 930         INIT_LIST_HEAD(&codec->dapm_widgets);
 931         INIT_LIST_HEAD(&codec->dapm_paths);
 932         wm8750_socdev = socdev;
 933         INIT_DELAYED_WORK(&codec->delayed_work, wm8750_work);
 934
 935         ret = -ENODEV;
 936
 937 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 938         if (setup->i2c_address) {
 939                 ret = wm8750_add_i2c_device(pdev, setup);
 940         }
 941 #endif
 942 #if defined(CONFIG_SPI_MASTER)
 943         if (setup->spi) {
 944                 ret = spi_register_driver(&wm8750_spi_driver);
 945                 if (ret != 0)
 946                         printk(KERN_ERR "can't add spi driver");
 947         }
 948 #endif
 949
 950         if (ret != 0) {
 951                 kfree(codec->private_data);
 952                 kfree(codec);
 953         }
 954         return ret;
 955 }
 956
 957 /*
 958  * This function forces any delayed work to be queued and run.
 959  */
 960 static int run_delayed_work(struct delayed_work *dwork)
 961 {
 962         int ret;
 963
 964         /* cancel any work waiting to be queued. */
 965         ret = cancel_delayed_work(dwork);
 966
 967         /* if there was any work waiting then we run it now and
 968          * wait for it's completion */
 969         if (ret) {
 970                 schedule_delayed_work(dwork, 0);
 971                 flush_scheduled_work();
 972         }
 973         return ret;
 974 }
 975
 976 /* power down chip */
 977 static int wm8750_remove(struct platform_device *pdev)
 978 {
 979         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 980         struct snd_soc_codec *codec = socdev->card->codec;
 981
 982         if (codec->control_data)
 983                 wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF);
 984         run_delayed_work(&codec->delayed_work);
 985         snd_soc_free_pcms(socdev);
 986         snd_soc_dapm_free(socdev);
 987 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 988         i2c_unregister_device(codec->control_data);
 989         i2c_del_driver(&wm8750_i2c_driver);
 990 #endif
 991 #if defined(CONFIG_SPI_MASTER)
 992         spi_unregister_driver(&wm8750_spi_driver);
 993 #endif
 994         kfree(codec->private_data);
 995         kfree(codec);
 996
 997         return 0;
 998 }
 999
1000 struct snd_soc_codec_device soc_codec_dev_wm8750 = {
1001         .probe =        wm8750_probe,
1002         .remove =       wm8750_remove,
1003         .suspend =      wm8750_suspend,
1004         .resume =       wm8750_resume,
1005 };
1006 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8750);
1007
1008 static int __init wm8750_modinit(void)
1009 {
1010         return snd_soc_register_dai(&wm8750_dai);
1011 }
1012 module_init(wm8750_modinit);
1013
1014 static void __exit wm8750_exit(void)
1015 {
1016         snd_soc_unregister_dai(&wm8750_dai);
1017 }
1018 module_exit(wm8750_exit);
1019
1020 MODULE_DESCRIPTION("ASoC WM8750 driver");
1021 MODULE_AUTHOR("Liam Girdwood");
1022 MODULE_LICENSE("GPL");