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         struct snd_soc_codec codec;
  56         u16 reg_cache[ARRAY_SIZE(wm8750_reg)];
  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 = snd_soc_codec_get_drvdata(codec);
 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 = 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 struct snd_soc_dai wm8750_dai = {
 653         .name = "WM8750",
 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 EXPORT_SYMBOL_GPL(wm8750_dai);
 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         return 0;
 699 }
 700
 701 static struct snd_soc_codec *wm8750_codec;
 702
 703 static int wm8750_probe(struct platform_device *pdev)
 704 {
 705         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 706         struct snd_soc_codec *codec;
 707         int ret = 0;
 708
 709         if (!wm8750_codec) {
 710                 dev_err(&pdev->dev, "WM8750 codec not yet registered\n");
 711                 return -EINVAL;
 712         }
 713
 714         socdev->card->codec = wm8750_codec;
 715         codec = wm8750_codec;
 716
 717         /* register pcms */
 718         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 719         if (ret < 0) {
 720                 printk(KERN_ERR "wm8750: failed to create pcms\n");
 721                 goto err;
 722         }
 723
 724         snd_soc_add_controls(codec, wm8750_snd_controls,
 725                                 ARRAY_SIZE(wm8750_snd_controls));
 726         wm8750_add_widgets(codec);
 727
 728         return 0;
 729
 730 err:
 731         return ret;
 732 }
 733
 734 /* power down chip */
 735 static int wm8750_remove(struct platform_device *pdev)
 736 {
 737         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 738
 739         snd_soc_free_pcms(socdev);
 740         snd_soc_dapm_free(socdev);
 741
 742         return 0;
 743 }
 744
 745 struct snd_soc_codec_device soc_codec_dev_wm8750 = {
 746         .probe          = wm8750_probe,
 747         .remove         = wm8750_remove,
 748         .suspend        = wm8750_suspend,
 749         .resume         = wm8750_resume,
 750 };
 751 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8750);
 752
 753 /*
 754  * initialise the WM8750 driver
 755  * register the mixer and dsp interfaces with the kernel
 756  */
 757 static int wm8750_register(struct wm8750_priv *wm8750,
 758                         enum snd_soc_control_type control)
 759 {
 760         struct snd_soc_codec *codec = &wm8750->codec;
 761         int reg, ret = 0;
 762
 763         if (wm8750_codec) {
 764                 dev_err(codec->dev, "Multiple WM8750 devices not supported\n");
 765                 ret = -EINVAL;
 766                 goto err;
 767         }
 768
 769         mutex_init(&codec->mutex);
 770         INIT_LIST_HEAD(&codec->dapm_widgets);
 771         INIT_LIST_HEAD(&codec->dapm_paths);
 772
 773         codec->name = "WM8750";
 774         codec->owner = THIS_MODULE;
 775         codec->bias_level = SND_SOC_BIAS_STANDBY;
 776         codec->set_bias_level = wm8750_set_bias_level;
 777         codec->dai = &wm8750_dai;
 778         codec->num_dai = 1;
 779         codec->reg_cache_size = ARRAY_SIZE(wm8750->reg_cache) + 1;
 780         codec->reg_cache = &wm8750->reg_cache;
 781         snd_soc_codec_set_drvdata(codec, wm8750);
 782
 783         memcpy(codec->reg_cache, wm8750_reg, sizeof(wm8750->reg_cache));
 784
 785         ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
 786         if (ret < 0) {
 787                 printk(KERN_ERR "wm8750: failed to set cache I/O: %d\n", ret);
 788                 goto err;
 789         }
 790
 791         ret = wm8750_reset(codec);
 792         if (ret < 0) {
 793                 printk(KERN_ERR "wm8750: failed to reset: %d\n", ret);
 794                 goto err;
 795         }
 796
 797         /* charge output caps */
 798         wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 799
 800         /* set the update bits */
 801         reg = snd_soc_read(codec, WM8750_LDAC);
 802         snd_soc_write(codec, WM8750_LDAC, reg | 0x0100);
 803         reg = snd_soc_read(codec, WM8750_RDAC);
 804         snd_soc_write(codec, WM8750_RDAC, reg | 0x0100);
 805         reg = snd_soc_read(codec, WM8750_LOUT1V);
 806         snd_soc_write(codec, WM8750_LOUT1V, reg | 0x0100);
 807         reg = snd_soc_read(codec, WM8750_ROUT1V);
 808         snd_soc_write(codec, WM8750_ROUT1V, reg | 0x0100);
 809         reg = snd_soc_read(codec, WM8750_LOUT2V);
 810         snd_soc_write(codec, WM8750_LOUT2V, reg | 0x0100);
 811         reg = snd_soc_read(codec, WM8750_ROUT2V);
 812         snd_soc_write(codec, WM8750_ROUT2V, reg | 0x0100);
 813         reg = snd_soc_read(codec, WM8750_LINVOL);
 814         snd_soc_write(codec, WM8750_LINVOL, reg | 0x0100);
 815         reg = snd_soc_read(codec, WM8750_RINVOL);
 816         snd_soc_write(codec, WM8750_RINVOL, reg | 0x0100);
 817
 818         wm8750_codec = codec;
 819
 820         ret = snd_soc_register_codec(codec);
 821         if (ret != 0) {
 822                 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
 823                 goto err;
 824         }
 825
 826         ret = snd_soc_register_dais(&wm8750_dai, 1);
 827         if (ret != 0) {
 828                 dev_err(codec->dev, "Failed to register DAIs: %d\n", ret);
 829                 goto err_codec;
 830         }
 831
 832         return 0;
 833
 834 err_codec:
 835         snd_soc_unregister_codec(codec);
 836 err:
 837         kfree(wm8750);
 838         return ret;
 839 }
 840
 841 static void wm8750_unregister(struct wm8750_priv *wm8750)
 842 {
 843         wm8750_set_bias_level(&wm8750->codec, SND_SOC_BIAS_OFF);
 844         snd_soc_unregister_dais(&wm8750_dai, 1);
 845         snd_soc_unregister_codec(&wm8750->codec);
 846         kfree(wm8750);
 847         wm8750_codec = NULL;
 848 }
 849
 850 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 851
 852 /*
 853  * WM8750 2 wire address is determined by GPIO5
 854  * state during powerup.
 855  *    low  = 0x1a
 856  *    high = 0x1b
 857  */
 858
 859 static int wm8750_i2c_probe(struct i2c_client *i2c,
 860                             const struct i2c_device_id *id)
 861 {
 862         struct snd_soc_codec *codec;
 863         struct wm8750_priv *wm8750;
 864
 865         wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
 866         if (wm8750 == NULL)
 867                 return -ENOMEM;
 868
 869         codec = &wm8750->codec;
 870         codec->control_data = i2c;
 871         i2c_set_clientdata(i2c, wm8750);
 872
 873         codec->dev = &i2c->dev;
 874
 875         return wm8750_register(wm8750, SND_SOC_I2C);
 876 }
 877
 878 static int wm8750_i2c_remove(struct i2c_client *client)
 879 {
 880         struct wm8750_priv *wm8750 = i2c_get_clientdata(client);
 881         wm8750_unregister(wm8750);
 882         return 0;
 883 }
 884
 885 static const struct i2c_device_id wm8750_i2c_id[] = {
 886         { "wm8750", 0 },
 887         { }
 888 };
 889 MODULE_DEVICE_TABLE(i2c, wm8750_i2c_id);
 890
 891 static struct i2c_driver wm8750_i2c_driver = {
 892         .driver = {
 893                 .name = "WM8750 I2C Codec",
 894                 .owner = THIS_MODULE,
 895         },
 896         .probe =    wm8750_i2c_probe,
 897         .remove =   wm8750_i2c_remove,
 898         .id_table = wm8750_i2c_id,
 899 };
 900 #endif
 901
 902 #if defined(CONFIG_SPI_MASTER)
 903 static int __devinit wm8750_spi_probe(struct spi_device *spi)
 904 {
 905         struct snd_soc_codec *codec;
 906         struct wm8750_priv *wm8750;
 907
 908         wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
 909         if (wm8750 == NULL)
 910                 return -ENOMEM;
 911
 912         codec = &wm8750->codec;
 913         codec->control_data = spi;
 914         codec->dev = &spi->dev;
 915
 916         dev_set_drvdata(&spi->dev, wm8750);
 917
 918         return wm8750_register(wm8750, SND_SOC_SPI);
 919 }
 920
 921 static int __devexit wm8750_spi_remove(struct spi_device *spi)
 922 {
 923         struct wm8750_priv *wm8750 = dev_get_drvdata(&spi->dev);
 924         wm8750_unregister(wm8750);
 925         return 0;
 926 }
 927
 928 static struct spi_driver wm8750_spi_driver = {
 929         .driver = {
 930                 .name   = "wm8750",
 931                 .bus    = &spi_bus_type,
 932                 .owner  = THIS_MODULE,
 933         },
 934         .probe          = wm8750_spi_probe,
 935         .remove         = __devexit_p(wm8750_spi_remove),
 936 };
 937 #endif
 938
 939 static int __init wm8750_modinit(void)
 940 {
 941         int ret;
 942 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 943         ret = i2c_add_driver(&wm8750_i2c_driver);
 944         if (ret != 0)
 945                 pr_err("Failed to register WM8750 I2C driver: %d\n", ret);
 946 #endif
 947 #if defined(CONFIG_SPI_MASTER)
 948         ret = spi_register_driver(&wm8750_spi_driver);
 949         if (ret != 0)
 950                 pr_err("Failed to register WM8750 SPI driver: %d\n", ret);
 951 #endif
 952         return 0;
 953 }
 954 module_init(wm8750_modinit);
 955
 956 static void __exit wm8750_exit(void)
 957 {
 958 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 959         i2c_del_driver(&wm8750_i2c_driver);
 960 #endif
 961 #if defined(CONFIG_SPI_MASTER)
 962         spi_unregister_driver(&wm8750_spi_driver);
 963 #endif
 964 }
 965 module_exit(wm8750_exit);
 966
 967 MODULE_DESCRIPTION("ASoC WM8750 driver");
 968 MODULE_AUTHOR("Liam Girdwood");
 969 MODULE_LICENSE("GPL");