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 <linux/of_device.h>
  25 #include <sound/core.h>
  26 #include <sound/pcm.h>
  27 #include <sound/pcm_params.h>
  28 #include <sound/soc.h>
  29 #include <sound/initval.h>
  30
  31 #include "wm8750.h"
  32
  33 /*
  34  * wm8750 register cache
  35  * We can't read the WM8750 register space when we
  36  * are using 2 wire for device control, so we cache them instead.
  37  */
  38 static const u16 wm8750_reg[] = {
  39         0x0097, 0x0097, 0x0079, 0x0079,  /*  0 */
  40         0x0000, 0x0008, 0x0000, 0x000a,  /*  4 */
  41         0x0000, 0x0000, 0x00ff, 0x00ff,  /*  8 */
  42         0x000f, 0x000f, 0x0000, 0x0000,  /* 12 */
  43         0x0000, 0x007b, 0x0000, 0x0032,  /* 16 */
  44         0x0000, 0x00c3, 0x00c3, 0x00c0,  /* 20 */
  45         0x0000, 0x0000, 0x0000, 0x0000,  /* 24 */
  46         0x0000, 0x0000, 0x0000, 0x0000,  /* 28 */
  47         0x0000, 0x0000, 0x0050, 0x0050,  /* 32 */
  48         0x0050, 0x0050, 0x0050, 0x0050,  /* 36 */
  49         0x0079, 0x0079, 0x0079,          /* 40 */
  50 };
  51
  52 /* codec private data */
  53 struct wm8750_priv {
  54         unsigned int sysclk;
  55         enum snd_soc_control_type control_type;
  56 };
  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         struct snd_soc_dapm_context *dapm = &codec->dapm;
 402
 403         snd_soc_dapm_new_controls(dapm, wm8750_dapm_widgets,
 404                                   ARRAY_SIZE(wm8750_dapm_widgets));
 405         snd_soc_dapm_add_routes(dapm, 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_codec *codec = rtd->codec;
 564         struct wm8750_priv *wm8750 = snd_soc_codec_get_drvdata(codec);
 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                 break;
 617         case SND_SOC_BIAS_STANDBY:
 618                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
 619                         snd_soc_cache_sync(codec);
 620
 621                         /* Set VMID to 5k */
 622                         snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x01c1);
 623
 624                         /* ...and ramp */
 625                         msleep(1000);
 626                 }
 627
 628                 /* mute dac and set vmid to 500k, enable VREF */
 629                 snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x0141);
 630                 break;
 631         case SND_SOC_BIAS_OFF:
 632                 snd_soc_write(codec, WM8750_PWR1, 0x0001);
 633                 break;
 634         }
 635         codec->dapm.bias_level = level;
 636         return 0;
 637 }
 638
 639 #define WM8750_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 640         SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
 641         SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
 642
 643 #define WM8750_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 644         SNDRV_PCM_FMTBIT_S24_LE)
 645
 646 static struct snd_soc_dai_ops wm8750_dai_ops = {
 647         .hw_params      = wm8750_pcm_hw_params,
 648         .digital_mute   = wm8750_mute,
 649         .set_fmt        = wm8750_set_dai_fmt,
 650         .set_sysclk     = wm8750_set_dai_sysclk,
 651 };
 652
 653 static struct snd_soc_dai_driver wm8750_dai = {
 654         .name = "wm8750-hifi",
 655         .playback = {
 656                 .stream_name = "Playback",
 657                 .channels_min = 1,
 658                 .channels_max = 2,
 659                 .rates = WM8750_RATES,
 660                 .formats = WM8750_FORMATS,},
 661         .capture = {
 662                 .stream_name = "Capture",
 663                 .channels_min = 1,
 664                 .channels_max = 2,
 665                 .rates = WM8750_RATES,
 666                 .formats = WM8750_FORMATS,},
 667         .ops = &wm8750_dai_ops,
 668 };
 669
 670 static int wm8750_suspend(struct snd_soc_codec *codec, pm_message_t state)
 671 {
 672         wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF);
 673         return 0;
 674 }
 675
 676 static int wm8750_resume(struct snd_soc_codec *codec)
 677 {
 678         wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 679         return 0;
 680 }
 681
 682 static int wm8750_probe(struct snd_soc_codec *codec)
 683 {
 684         struct wm8750_priv *wm8750 = snd_soc_codec_get_drvdata(codec);
 685         int ret;
 686
 687         ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8750->control_type);
 688         if (ret < 0) {
 689                 printk(KERN_ERR "wm8750: failed to set cache I/O: %d\n", ret);
 690                 return ret;
 691         }
 692
 693         ret = wm8750_reset(codec);
 694         if (ret < 0) {
 695                 printk(KERN_ERR "wm8750: failed to reset: %d\n", ret);
 696                 return ret;
 697         }
 698
 699         /* charge output caps */
 700         wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 701
 702         /* set the update bits */
 703         snd_soc_update_bits(codec, WM8750_LDAC, 0x0100, 0x0100);
 704         snd_soc_update_bits(codec, WM8750_RDAC, 0x0100, 0x0100);
 705         snd_soc_update_bits(codec, WM8750_LOUT1V, 0x0100, 0x0100);
 706         snd_soc_update_bits(codec, WM8750_ROUT1V, 0x0100, 0x0100);
 707         snd_soc_update_bits(codec, WM8750_LOUT2V, 0x0100, 0x0100);
 708         snd_soc_update_bits(codec, WM8750_ROUT2V, 0x0100, 0x0100);
 709         snd_soc_update_bits(codec, WM8750_LINVOL, 0x0100, 0x0100);
 710         snd_soc_update_bits(codec, WM8750_RINVOL, 0x0100, 0x0100);
 711
 712         snd_soc_add_controls(codec, wm8750_snd_controls,
 713                                 ARRAY_SIZE(wm8750_snd_controls));
 714         wm8750_add_widgets(codec);
 715         return ret;
 716 }
 717
 718 static int wm8750_remove(struct snd_soc_codec *codec)
 719 {
 720         wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF);
 721         return 0;
 722 }
 723
 724 static struct snd_soc_codec_driver soc_codec_dev_wm8750 = {
 725         .probe =        wm8750_probe,
 726         .remove =       wm8750_remove,
 727         .suspend =      wm8750_suspend,
 728         .resume =       wm8750_resume,
 729         .set_bias_level = wm8750_set_bias_level,
 730         .reg_cache_size = ARRAY_SIZE(wm8750_reg),
 731         .reg_word_size = sizeof(u16),
 732         .reg_cache_default = wm8750_reg,
 733 };
 734
 735 static const struct of_device_id wm8750_of_match[] = {
 736         { .compatible = "wlf,wm8750", },
 737         { .compatible = "wlf,wm8987", },
 738         { }
 739 };
 740 MODULE_DEVICE_TABLE(of, wm8750_of_match);
 741
 742 #if defined(CONFIG_SPI_MASTER)
 743 static int __devinit wm8750_spi_probe(struct spi_device *spi)
 744 {
 745         struct wm8750_priv *wm8750;
 746         int ret;
 747
 748         wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
 749         if (wm8750 == NULL)
 750                 return -ENOMEM;
 751
 752         wm8750->control_type = SND_SOC_SPI;
 753         spi_set_drvdata(spi, wm8750);
 754
 755         ret = snd_soc_register_codec(&spi->dev,
 756                         &soc_codec_dev_wm8750, &wm8750_dai, 1);
 757         if (ret < 0)
 758                 kfree(wm8750);
 759         return ret;
 760 }
 761
 762 static int __devexit wm8750_spi_remove(struct spi_device *spi)
 763 {
 764         snd_soc_unregister_codec(&spi->dev);
 765         kfree(spi_get_drvdata(spi));
 766         return 0;
 767 }
 768
 769 static const struct spi_device_id wm8750_spi_ids[] = {
 770         { "wm8750", 0 },
 771         { "wm8987", 0 },
 772         { },
 773 };
 774 MODULE_DEVICE_TABLE(spi, wm8750_spi_ids);
 775
 776 static struct spi_driver wm8750_spi_driver = {
 777         .driver = {
 778                 .name   = "wm8750",
 779                 .owner  = THIS_MODULE,
 780                 .of_match_table = wm8750_of_match,
 781         },
 782         .id_table       = wm8750_spi_ids,
 783         .probe          = wm8750_spi_probe,
 784         .remove         = __devexit_p(wm8750_spi_remove),
 785 };
 786 #endif /* CONFIG_SPI_MASTER */
 787
 788 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 789 static __devinit int wm8750_i2c_probe(struct i2c_client *i2c,
 790                                       const struct i2c_device_id *id)
 791 {
 792         struct wm8750_priv *wm8750;
 793         int ret;
 794
 795         wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
 796         if (wm8750 == NULL)
 797                 return -ENOMEM;
 798
 799         i2c_set_clientdata(i2c, wm8750);
 800         wm8750->control_type = SND_SOC_I2C;
 801
 802         ret =  snd_soc_register_codec(&i2c->dev,
 803                         &soc_codec_dev_wm8750, &wm8750_dai, 1);
 804         if (ret < 0)
 805                 kfree(wm8750);
 806         return ret;
 807 }
 808
 809 static __devexit int wm8750_i2c_remove(struct i2c_client *client)
 810 {
 811         snd_soc_unregister_codec(&client->dev);
 812         kfree(i2c_get_clientdata(client));
 813         return 0;
 814 }
 815
 816 static const struct i2c_device_id wm8750_i2c_id[] = {
 817         { "wm8750", 0 },
 818         { "wm8987", 0 },
 819         { }
 820 };
 821 MODULE_DEVICE_TABLE(i2c, wm8750_i2c_id);
 822
 823 static struct i2c_driver wm8750_i2c_driver = {
 824         .driver = {
 825                 .name = "wm8750",
 826                 .owner = THIS_MODULE,
 827                 .of_match_table = wm8750_of_match,
 828         },
 829         .probe =    wm8750_i2c_probe,
 830         .remove =   __devexit_p(wm8750_i2c_remove),
 831         .id_table = wm8750_i2c_id,
 832 };
 833 #endif
 834
 835 static int __init wm8750_modinit(void)
 836 {
 837         int ret = 0;
 838 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 839         ret = i2c_add_driver(&wm8750_i2c_driver);
 840         if (ret != 0) {
 841                 printk(KERN_ERR "Failed to register wm8750 I2C driver: %d\n",
 842                        ret);
 843         }
 844 #endif
 845 #if defined(CONFIG_SPI_MASTER)
 846         ret = spi_register_driver(&wm8750_spi_driver);
 847         if (ret != 0) {
 848                 printk(KERN_ERR "Failed to register wm8750 SPI driver: %d\n",
 849                        ret);
 850         }
 851 #endif
 852         return ret;
 853 }
 854 module_init(wm8750_modinit);
 855
 856 static void __exit wm8750_exit(void)
 857 {
 858 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 859         i2c_del_driver(&wm8750_i2c_driver);
 860 #endif
 861 #if defined(CONFIG_SPI_MASTER)
 862         spi_unregister_driver(&wm8750_spi_driver);
 863 #endif
 864 }
 865 module_exit(wm8750_exit);
 866
 867 MODULE_DESCRIPTION("ASoC WM8750 driver");
 868 MODULE_AUTHOR("Liam Girdwood");
 869 MODULE_LICENSE("GPL");