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 <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         return 0;
 407 }
 408
 409 struct _coeff_div {
 410         u32 mclk;
 411         u32 rate;
 412         u16 fs;
 413         u8 sr:5;
 414         u8 usb:1;
 415 };
 416
 417 /* codec hifi mclk clock divider coefficients */
 418 static const struct _coeff_div coeff_div[] = {
 419         /* 8k */
 420         {12288000, 8000, 1536, 0x6, 0x0},
 421         {11289600, 8000, 1408, 0x16, 0x0},
 422         {18432000, 8000, 2304, 0x7, 0x0},
 423         {16934400, 8000, 2112, 0x17, 0x0},
 424         {12000000, 8000, 1500, 0x6, 0x1},
 425
 426         /* 11.025k */
 427         {11289600, 11025, 1024, 0x18, 0x0},
 428         {16934400, 11025, 1536, 0x19, 0x0},
 429         {12000000, 11025, 1088, 0x19, 0x1},
 430
 431         /* 16k */
 432         {12288000, 16000, 768, 0xa, 0x0},
 433         {18432000, 16000, 1152, 0xb, 0x0},
 434         {12000000, 16000, 750, 0xa, 0x1},
 435
 436         /* 22.05k */
 437         {11289600, 22050, 512, 0x1a, 0x0},
 438         {16934400, 22050, 768, 0x1b, 0x0},
 439         {12000000, 22050, 544, 0x1b, 0x1},
 440
 441         /* 32k */
 442         {12288000, 32000, 384, 0xc, 0x0},
 443         {18432000, 32000, 576, 0xd, 0x0},
 444         {12000000, 32000, 375, 0xa, 0x1},
 445
 446         /* 44.1k */
 447         {11289600, 44100, 256, 0x10, 0x0},
 448         {16934400, 44100, 384, 0x11, 0x0},
 449         {12000000, 44100, 272, 0x11, 0x1},
 450
 451         /* 48k */
 452         {12288000, 48000, 256, 0x0, 0x0},
 453         {18432000, 48000, 384, 0x1, 0x0},
 454         {12000000, 48000, 250, 0x0, 0x1},
 455
 456         /* 88.2k */
 457         {11289600, 88200, 128, 0x1e, 0x0},
 458         {16934400, 88200, 192, 0x1f, 0x0},
 459         {12000000, 88200, 136, 0x1f, 0x1},
 460
 461         /* 96k */
 462         {12288000, 96000, 128, 0xe, 0x0},
 463         {18432000, 96000, 192, 0xf, 0x0},
 464         {12000000, 96000, 125, 0xe, 0x1},
 465 };
 466
 467 static inline int get_coeff(int mclk, int rate)
 468 {
 469         int i;
 470
 471         for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
 472                 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
 473                         return i;
 474         }
 475
 476         printk(KERN_ERR "wm8750: could not get coeff for mclk %d @ rate %d\n",
 477                 mclk, rate);
 478         return -EINVAL;
 479 }
 480
 481 static int wm8750_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 482                 int clk_id, unsigned int freq, int dir)
 483 {
 484         struct snd_soc_codec *codec = codec_dai->codec;
 485         struct wm8750_priv *wm8750 = codec->private_data;
 486
 487         switch (freq) {
 488         case 11289600:
 489         case 12000000:
 490         case 12288000:
 491         case 16934400:
 492         case 18432000:
 493                 wm8750->sysclk = freq;
 494                 return 0;
 495         }
 496         return -EINVAL;
 497 }
 498
 499 static int wm8750_set_dai_fmt(struct snd_soc_dai *codec_dai,
 500                 unsigned int fmt)
 501 {
 502         struct snd_soc_codec *codec = codec_dai->codec;
 503         u16 iface = 0;
 504
 505         /* set master/slave audio interface */
 506         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 507         case SND_SOC_DAIFMT_CBM_CFM:
 508                 iface = 0x0040;
 509                 break;
 510         case SND_SOC_DAIFMT_CBS_CFS:
 511                 break;
 512         default:
 513                 return -EINVAL;
 514         }
 515
 516         /* interface format */
 517         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 518         case SND_SOC_DAIFMT_I2S:
 519                 iface |= 0x0002;
 520                 break;
 521         case SND_SOC_DAIFMT_RIGHT_J:
 522                 break;
 523         case SND_SOC_DAIFMT_LEFT_J:
 524                 iface |= 0x0001;
 525                 break;
 526         case SND_SOC_DAIFMT_DSP_A:
 527                 iface |= 0x0003;
 528                 break;
 529         case SND_SOC_DAIFMT_DSP_B:
 530                 iface |= 0x0013;
 531                 break;
 532         default:
 533                 return -EINVAL;
 534         }
 535
 536         /* clock inversion */
 537         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 538         case SND_SOC_DAIFMT_NB_NF:
 539                 break;
 540         case SND_SOC_DAIFMT_IB_IF:
 541                 iface |= 0x0090;
 542                 break;
 543         case SND_SOC_DAIFMT_IB_NF:
 544                 iface |= 0x0080;
 545                 break;
 546         case SND_SOC_DAIFMT_NB_IF:
 547                 iface |= 0x0010;
 548                 break;
 549         default:
 550                 return -EINVAL;
 551         }
 552
 553         snd_soc_write(codec, WM8750_IFACE, iface);
 554         return 0;
 555 }
 556
 557 static int wm8750_pcm_hw_params(struct snd_pcm_substream *substream,
 558                                 struct snd_pcm_hw_params *params,
 559                                 struct snd_soc_dai *dai)
 560 {
 561         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 562         struct snd_soc_device *socdev = rtd->socdev;
 563         struct snd_soc_codec *codec = socdev->card->codec;
 564         struct wm8750_priv *wm8750 = codec->private_data;
 565         u16 iface = snd_soc_read(codec, WM8750_IFACE) & 0x1f3;
 566         u16 srate = snd_soc_read(codec, WM8750_SRATE) & 0x1c0;
 567         int coeff = get_coeff(wm8750->sysclk, params_rate(params));
 568
 569         /* bit size */
 570         switch (params_format(params)) {
 571         case SNDRV_PCM_FORMAT_S16_LE:
 572                 break;
 573         case SNDRV_PCM_FORMAT_S20_3LE:
 574                 iface |= 0x0004;
 575                 break;
 576         case SNDRV_PCM_FORMAT_S24_LE:
 577                 iface |= 0x0008;
 578                 break;
 579         case SNDRV_PCM_FORMAT_S32_LE:
 580                 iface |= 0x000c;
 581                 break;
 582         }
 583
 584         /* set iface & srate */
 585         snd_soc_write(codec, WM8750_IFACE, iface);
 586         if (coeff >= 0)
 587                 snd_soc_write(codec, WM8750_SRATE, srate |
 588                         (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
 589
 590         return 0;
 591 }
 592
 593 static int wm8750_mute(struct snd_soc_dai *dai, int mute)
 594 {
 595         struct snd_soc_codec *codec = dai->codec;
 596         u16 mute_reg = snd_soc_read(codec, WM8750_ADCDAC) & 0xfff7;
 597
 598         if (mute)
 599                 snd_soc_write(codec, WM8750_ADCDAC, mute_reg | 0x8);
 600         else
 601                 snd_soc_write(codec, WM8750_ADCDAC, mute_reg);
 602         return 0;
 603 }
 604
 605 static int wm8750_set_bias_level(struct snd_soc_codec *codec,
 606                                  enum snd_soc_bias_level level)
 607 {
 608         u16 pwr_reg = snd_soc_read(codec, WM8750_PWR1) & 0xfe3e;
 609
 610         switch (level) {
 611         case SND_SOC_BIAS_ON:
 612                 /* set vmid to 50k and unmute dac */
 613                 snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x00c0);
 614                 break;
 615         case SND_SOC_BIAS_PREPARE:
 616                 /* set vmid to 5k for quick power up */
 617                 snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x01c1);
 618                 break;
 619         case SND_SOC_BIAS_STANDBY:
 620                 /* mute dac and set vmid to 500k, enable VREF */
 621                 snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x0141);
 622                 break;
 623         case SND_SOC_BIAS_OFF:
 624                 snd_soc_write(codec, WM8750_PWR1, 0x0001);
 625                 break;
 626         }
 627         codec->bias_level = level;
 628         return 0;
 629 }
 630
 631 #define WM8750_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 632         SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
 633         SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
 634
 635 #define WM8750_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 636         SNDRV_PCM_FMTBIT_S24_LE)
 637
 638 static struct snd_soc_dai_ops wm8750_dai_ops = {
 639         .hw_params      = wm8750_pcm_hw_params,
 640         .digital_mute   = wm8750_mute,
 641         .set_fmt        = wm8750_set_dai_fmt,
 642         .set_sysclk     = wm8750_set_dai_sysclk,
 643 };
 644
 645 struct snd_soc_dai wm8750_dai = {
 646         .name = "WM8750",
 647         .playback = {
 648                 .stream_name = "Playback",
 649                 .channels_min = 1,
 650                 .channels_max = 2,
 651                 .rates = WM8750_RATES,
 652                 .formats = WM8750_FORMATS,},
 653         .capture = {
 654                 .stream_name = "Capture",
 655                 .channels_min = 1,
 656                 .channels_max = 2,
 657                 .rates = WM8750_RATES,
 658                 .formats = WM8750_FORMATS,},
 659         .ops = &wm8750_dai_ops,
 660 };
 661 EXPORT_SYMBOL_GPL(wm8750_dai);
 662
 663 static void wm8750_work(struct work_struct *work)
 664 {
 665         struct snd_soc_codec *codec =
 666                 container_of(work, struct snd_soc_codec, delayed_work.work);
 667         wm8750_set_bias_level(codec, codec->bias_level);
 668 }
 669
 670 static int wm8750_suspend(struct platform_device *pdev, pm_message_t state)
 671 {
 672         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 673         struct snd_soc_codec *codec = socdev->card->codec;
 674
 675         wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF);
 676         return 0;
 677 }
 678
 679 static int wm8750_resume(struct platform_device *pdev)
 680 {
 681         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 682         struct snd_soc_codec *codec = socdev->card->codec;
 683         int i;
 684         u8 data[2];
 685         u16 *cache = codec->reg_cache;
 686
 687         /* Sync reg_cache with the hardware */
 688         for (i = 0; i < ARRAY_SIZE(wm8750_reg); i++) {
 689                 if (i == WM8750_RESET)
 690                         continue;
 691                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 692                 data[1] = cache[i] & 0x00ff;
 693                 codec->hw_write(codec->control_data, data, 2);
 694         }
 695
 696         wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 697
 698         /* charge wm8750 caps */
 699         if (codec->suspend_bias_level == SND_SOC_BIAS_ON) {
 700                 wm8750_set_bias_level(codec, SND_SOC_BIAS_PREPARE);
 701                 codec->bias_level = SND_SOC_BIAS_ON;
 702                 schedule_delayed_work(&codec->delayed_work,
 703                                         msecs_to_jiffies(1000));
 704         }
 705
 706         return 0;
 707 }
 708
 709 /*
 710  * initialise the WM8750 driver
 711  * register the mixer and dsp interfaces with the kernel
 712  */
 713 static int wm8750_init(struct snd_soc_device *socdev,
 714                        enum snd_soc_control_type control)
 715 {
 716         struct snd_soc_codec *codec = socdev->card->codec;
 717         int reg, ret = 0;
 718
 719         codec->name = "WM8750";
 720         codec->owner = THIS_MODULE;
 721         codec->set_bias_level = wm8750_set_bias_level;
 722         codec->dai = &wm8750_dai;
 723         codec->num_dai = 1;
 724         codec->reg_cache_size = ARRAY_SIZE(wm8750_reg);
 725         codec->reg_cache = kmemdup(wm8750_reg, sizeof(wm8750_reg), GFP_KERNEL);
 726         if (codec->reg_cache == NULL)
 727                 return -ENOMEM;
 728
 729         ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
 730         if (ret < 0) {
 731                 printk(KERN_ERR "wm8750: failed to set cache I/O: %d\n", ret);
 732                 goto err;
 733         }
 734
 735         ret = wm8750_reset(codec);
 736         if (ret < 0) {
 737                 printk(KERN_ERR "wm8750: failed to reset: %d\n", ret);
 738                 goto err;
 739         }
 740
 741         /* register pcms */
 742         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 743         if (ret < 0) {
 744                 printk(KERN_ERR "wm8750: failed to create pcms\n");
 745                 goto err;
 746         }
 747
 748         /* charge output caps */
 749         wm8750_set_bias_level(codec, SND_SOC_BIAS_PREPARE);
 750         codec->bias_level = SND_SOC_BIAS_STANDBY;
 751         schedule_delayed_work(&codec->delayed_work, msecs_to_jiffies(1000));
 752
 753         /* set the update bits */
 754         reg = snd_soc_read(codec, WM8750_LDAC);
 755         snd_soc_write(codec, WM8750_LDAC, reg | 0x0100);
 756         reg = snd_soc_read(codec, WM8750_RDAC);
 757         snd_soc_write(codec, WM8750_RDAC, reg | 0x0100);
 758         reg = snd_soc_read(codec, WM8750_LOUT1V);
 759         snd_soc_write(codec, WM8750_LOUT1V, reg | 0x0100);
 760         reg = snd_soc_read(codec, WM8750_ROUT1V);
 761         snd_soc_write(codec, WM8750_ROUT1V, reg | 0x0100);
 762         reg = snd_soc_read(codec, WM8750_LOUT2V);
 763         snd_soc_write(codec, WM8750_LOUT2V, reg | 0x0100);
 764         reg = snd_soc_read(codec, WM8750_ROUT2V);
 765         snd_soc_write(codec, WM8750_ROUT2V, reg | 0x0100);
 766         reg = snd_soc_read(codec, WM8750_LINVOL);
 767         snd_soc_write(codec, WM8750_LINVOL, reg | 0x0100);
 768         reg = snd_soc_read(codec, WM8750_RINVOL);
 769         snd_soc_write(codec, WM8750_RINVOL, reg | 0x0100);
 770
 771         snd_soc_add_controls(codec, wm8750_snd_controls,
 772                                 ARRAY_SIZE(wm8750_snd_controls));
 773         wm8750_add_widgets(codec);
 774         return ret;
 775
 776 err:
 777         kfree(codec->reg_cache);
 778         return ret;
 779 }
 780
 781 /* If the i2c layer weren't so broken, we could pass this kind of data
 782    around */
 783 static struct snd_soc_device *wm8750_socdev;
 784
 785 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 786
 787 /*
 788  * WM8750 2 wire address is determined by GPIO5
 789  * state during powerup.
 790  *    low  = 0x1a
 791  *    high = 0x1b
 792  */
 793
 794 static int wm8750_i2c_probe(struct i2c_client *i2c,
 795                             const struct i2c_device_id *id)
 796 {
 797         struct snd_soc_device *socdev = wm8750_socdev;
 798         struct snd_soc_codec *codec = socdev->card->codec;
 799         int ret;
 800
 801         i2c_set_clientdata(i2c, codec);
 802         codec->control_data = i2c;
 803
 804         ret = wm8750_init(socdev, SND_SOC_I2C);
 805         if (ret < 0)
 806                 pr_err("failed to initialise WM8750\n");
 807
 808         return ret;
 809 }
 810
 811 static int wm8750_i2c_remove(struct i2c_client *client)
 812 {
 813         struct snd_soc_codec *codec = i2c_get_clientdata(client);
 814         kfree(codec->reg_cache);
 815         return 0;
 816 }
 817
 818 static const struct i2c_device_id wm8750_i2c_id[] = {
 819         { "wm8750", 0 },
 820         { }
 821 };
 822 MODULE_DEVICE_TABLE(i2c, wm8750_i2c_id);
 823
 824 static struct i2c_driver wm8750_i2c_driver = {
 825         .driver = {
 826                 .name = "WM8750 I2C Codec",
 827                 .owner = THIS_MODULE,
 828         },
 829         .probe =    wm8750_i2c_probe,
 830         .remove =   wm8750_i2c_remove,
 831         .id_table = wm8750_i2c_id,
 832 };
 833
 834 static int wm8750_add_i2c_device(struct platform_device *pdev,
 835                                  const struct wm8750_setup_data *setup)
 836 {
 837         struct i2c_board_info info;
 838         struct i2c_adapter *adapter;
 839         struct i2c_client *client;
 840         int ret;
 841
 842         ret = i2c_add_driver(&wm8750_i2c_driver);
 843         if (ret != 0) {
 844                 dev_err(&pdev->dev, "can't add i2c driver\n");
 845                 return ret;
 846         }
 847
 848         memset(&info, 0, sizeof(struct i2c_board_info));
 849         info.addr = setup->i2c_address;
 850         strlcpy(info.type, "wm8750", I2C_NAME_SIZE);
 851
 852         adapter = i2c_get_adapter(setup->i2c_bus);
 853         if (!adapter) {
 854                 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
 855                         setup->i2c_bus);
 856                 goto err_driver;
 857         }
 858
 859         client = i2c_new_device(adapter, &info);
 860         i2c_put_adapter(adapter);
 861         if (!client) {
 862                 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
 863                         (unsigned int)info.addr);
 864                 goto err_driver;
 865         }
 866
 867         return 0;
 868
 869 err_driver:
 870         i2c_del_driver(&wm8750_i2c_driver);
 871         return -ENODEV;
 872 }
 873 #endif
 874
 875 #if defined(CONFIG_SPI_MASTER)
 876 static int __devinit wm8750_spi_probe(struct spi_device *spi)
 877 {
 878         struct snd_soc_device *socdev = wm8750_socdev;
 879         struct snd_soc_codec *codec = socdev->card->codec;
 880         int ret;
 881
 882         codec->control_data = spi;
 883
 884         ret = wm8750_init(socdev, SND_SOC_SPI);
 885         if (ret < 0)
 886                 dev_err(&spi->dev, "failed to initialise WM8750\n");
 887
 888         return ret;
 889 }
 890
 891 static int __devexit wm8750_spi_remove(struct spi_device *spi)
 892 {
 893         return 0;
 894 }
 895
 896 static struct spi_driver wm8750_spi_driver = {
 897         .driver = {
 898                 .name   = "wm8750",
 899                 .bus    = &spi_bus_type,
 900                 .owner  = THIS_MODULE,
 901         },
 902         .probe          = wm8750_spi_probe,
 903         .remove         = __devexit_p(wm8750_spi_remove),
 904 };
 905 #endif
 906
 907 static int wm8750_probe(struct platform_device *pdev)
 908 {
 909         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 910         struct wm8750_setup_data *setup = socdev->codec_data;
 911         struct snd_soc_codec *codec;
 912         struct wm8750_priv *wm8750;
 913         int ret;
 914
 915         pr_info("WM8750 Audio Codec %s", WM8750_VERSION);
 916         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 917         if (codec == NULL)
 918                 return -ENOMEM;
 919
 920         wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
 921         if (wm8750 == NULL) {
 922                 kfree(codec);
 923                 return -ENOMEM;
 924         }
 925
 926         codec->private_data = wm8750;
 927         socdev->card->codec = codec;
 928         mutex_init(&codec->mutex);
 929         INIT_LIST_HEAD(&codec->dapm_widgets);
 930         INIT_LIST_HEAD(&codec->dapm_paths);
 931         wm8750_socdev = socdev;
 932         INIT_DELAYED_WORK(&codec->delayed_work, wm8750_work);
 933
 934         ret = -ENODEV;
 935
 936 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 937         if (setup->i2c_address) {
 938                 ret = wm8750_add_i2c_device(pdev, setup);
 939         }
 940 #endif
 941 #if defined(CONFIG_SPI_MASTER)
 942         if (setup->spi) {
 943                 ret = spi_register_driver(&wm8750_spi_driver);
 944                 if (ret != 0)
 945                         printk(KERN_ERR "can't add spi driver");
 946         }
 947 #endif
 948
 949         if (ret != 0) {
 950                 kfree(codec->private_data);
 951                 kfree(codec);
 952         }
 953         return ret;
 954 }
 955
 956 /*
 957  * This function forces any delayed work to be queued and run.
 958  */
 959 static int run_delayed_work(struct delayed_work *dwork)
 960 {
 961         int ret;
 962
 963         /* cancel any work waiting to be queued. */
 964         ret = cancel_delayed_work(dwork);
 965
 966         /* if there was any work waiting then we run it now and
 967          * wait for it's completion */
 968         if (ret) {
 969                 schedule_delayed_work(dwork, 0);
 970                 flush_scheduled_work();
 971         }
 972         return ret;
 973 }
 974
 975 /* power down chip */
 976 static int wm8750_remove(struct platform_device *pdev)
 977 {
 978         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 979         struct snd_soc_codec *codec = socdev->card->codec;
 980
 981         if (codec->control_data)
 982                 wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF);
 983         run_delayed_work(&codec->delayed_work);
 984         snd_soc_free_pcms(socdev);
 985         snd_soc_dapm_free(socdev);
 986 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 987         i2c_unregister_device(codec->control_data);
 988         i2c_del_driver(&wm8750_i2c_driver);
 989 #endif
 990 #if defined(CONFIG_SPI_MASTER)
 991         spi_unregister_driver(&wm8750_spi_driver);
 992 #endif
 993         kfree(codec->private_data);
 994         kfree(codec);
 995
 996         return 0;
 997 }
 998
 999 struct snd_soc_codec_device soc_codec_dev_wm8750 = {
1000         .probe =        wm8750_probe,
1001         .remove =       wm8750_remove,
1002         .suspend =      wm8750_suspend,
1003         .resume =       wm8750_resume,
1004 };
1005 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8750);
1006
1007 static int __init wm8750_modinit(void)
1008 {
1009         return snd_soc_register_dai(&wm8750_dai);
1010 }
1011 module_init(wm8750_modinit);
1012
1013 static void __exit wm8750_exit(void)
1014 {
1015         snd_soc_unregister_dai(&wm8750_dai);
1016 }
1017 module_exit(wm8750_exit);
1018
1019 MODULE_DESCRIPTION("ASoC WM8750 driver");
1020 MODULE_AUTHOR("Liam Girdwood");
1021 MODULE_LICENSE("GPL");