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 /* codec private data */
  33 struct wm8750_priv {
  34         unsigned int sysclk;
  35 };
  36
  37 /*
  38  * wm8750 register cache
  39  * We can't read the WM8750 register space when we
  40  * are using 2 wire for device control, so we cache them instead.
  41  */
  42 static const u16 wm8750_reg[] = {
  43         0x0097, 0x0097, 0x0079, 0x0079,  /*  0 */
  44         0x0000, 0x0008, 0x0000, 0x000a,  /*  4 */
  45         0x0000, 0x0000, 0x00ff, 0x00ff,  /*  8 */
  46         0x000f, 0x000f, 0x0000, 0x0000,  /* 12 */
  47         0x0000, 0x007b, 0x0000, 0x0032,  /* 16 */
  48         0x0000, 0x00c3, 0x00c3, 0x00c0,  /* 20 */
  49         0x0000, 0x0000, 0x0000, 0x0000,  /* 24 */
  50         0x0000, 0x0000, 0x0000, 0x0000,  /* 28 */
  51         0x0000, 0x0000, 0x0050, 0x0050,  /* 32 */
  52         0x0050, 0x0050, 0x0050, 0x0050,  /* 36 */
  53         0x0079, 0x0079, 0x0079,          /* 40 */
  54 };
  55
  56 #define wm8750_reset(c) snd_soc_write(c, WM8750_RESET, 0)
  57
  58 /*
  59  * WM8750 Controls
  60  */
  61 static const char *wm8750_bass[] = {"Linear Control", "Adaptive Boost"};
  62 static const char *wm8750_bass_filter[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" };
  63 static const char *wm8750_treble[] = {"8kHz", "4kHz"};
  64 static const char *wm8750_3d_lc[] = {"200Hz", "500Hz"};
  65 static const char *wm8750_3d_uc[] = {"2.2kHz", "1.5kHz"};
  66 static const char *wm8750_3d_func[] = {"Capture", "Playback"};
  67 static const char *wm8750_alc_func[] = {"Off", "Right", "Left", "Stereo"};
  68 static const char *wm8750_ng_type[] = {"Constant PGA Gain",
  69         "Mute ADC Output"};
  70 static const char *wm8750_line_mux[] = {"Line 1", "Line 2", "Line 3", "PGA",
  71         "Differential"};
  72 static const char *wm8750_pga_sel[] = {"Line 1", "Line 2", "Line 3",
  73         "Differential"};
  74 static const char *wm8750_out3[] = {"VREF", "ROUT1 + Vol", "MonoOut",
  75         "ROUT1"};
  76 static const char *wm8750_diff_sel[] = {"Line 1", "Line 2"};
  77 static const char *wm8750_adcpol[] = {"Normal", "L Invert", "R Invert",
  78         "L + R Invert"};
  79 static const char *wm8750_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
  80 static const char *wm8750_mono_mux[] = {"Stereo", "Mono (Left)",
  81         "Mono (Right)", "Digital Mono"};
  82
  83 static const struct soc_enum wm8750_enum[] = {
  84 SOC_ENUM_SINGLE(WM8750_BASS, 7, 2, wm8750_bass),
  85 SOC_ENUM_SINGLE(WM8750_BASS, 6, 2, wm8750_bass_filter),
  86 SOC_ENUM_SINGLE(WM8750_TREBLE, 6, 2, wm8750_treble),
  87 SOC_ENUM_SINGLE(WM8750_3D, 5, 2, wm8750_3d_lc),
  88 SOC_ENUM_SINGLE(WM8750_3D, 6, 2, wm8750_3d_uc),
  89 SOC_ENUM_SINGLE(WM8750_3D, 7, 2, wm8750_3d_func),
  90 SOC_ENUM_SINGLE(WM8750_ALC1, 7, 4, wm8750_alc_func),
  91 SOC_ENUM_SINGLE(WM8750_NGATE, 1, 2, wm8750_ng_type),
  92 SOC_ENUM_SINGLE(WM8750_LOUTM1, 0, 5, wm8750_line_mux),
  93 SOC_ENUM_SINGLE(WM8750_ROUTM1, 0, 5, wm8750_line_mux),
  94 SOC_ENUM_SINGLE(WM8750_LADCIN, 6, 4, wm8750_pga_sel), /* 10 */
  95 SOC_ENUM_SINGLE(WM8750_RADCIN, 6, 4, wm8750_pga_sel),
  96 SOC_ENUM_SINGLE(WM8750_ADCTL2, 7, 4, wm8750_out3),
  97 SOC_ENUM_SINGLE(WM8750_ADCIN, 8, 2, wm8750_diff_sel),
  98 SOC_ENUM_SINGLE(WM8750_ADCDAC, 5, 4, wm8750_adcpol),
  99 SOC_ENUM_SINGLE(WM8750_ADCDAC, 1, 4, wm8750_deemph),
 100 SOC_ENUM_SINGLE(WM8750_ADCIN, 6, 4, wm8750_mono_mux), /* 16 */
 101
 102 };
 103
 104 static const struct snd_kcontrol_new wm8750_snd_controls[] = {
 105
 106 SOC_DOUBLE_R("Capture Volume", WM8750_LINVOL, WM8750_RINVOL, 0, 63, 0),
 107 SOC_DOUBLE_R("Capture ZC Switch", WM8750_LINVOL, WM8750_RINVOL, 6, 1, 0),
 108 SOC_DOUBLE_R("Capture Switch", WM8750_LINVOL, WM8750_RINVOL, 7, 1, 1),
 109
 110 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8750_LOUT1V,
 111         WM8750_ROUT1V, 7, 1, 0),
 112 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8750_LOUT2V,
 113         WM8750_ROUT2V, 7, 1, 0),
 114
 115 SOC_ENUM("Playback De-emphasis", wm8750_enum[15]),
 116
 117 SOC_ENUM("Capture Polarity", wm8750_enum[14]),
 118 SOC_SINGLE("Playback 6dB Attenuate", WM8750_ADCDAC, 7, 1, 0),
 119 SOC_SINGLE("Capture 6dB Attenuate", WM8750_ADCDAC, 8, 1, 0),
 120
 121 SOC_DOUBLE_R("PCM Volume", WM8750_LDAC, WM8750_RDAC, 0, 255, 0),
 122
 123 SOC_ENUM("Bass Boost", wm8750_enum[0]),
 124 SOC_ENUM("Bass Filter", wm8750_enum[1]),
 125 SOC_SINGLE("Bass Volume", WM8750_BASS, 0, 15, 1),
 126
 127 SOC_SINGLE("Treble Volume", WM8750_TREBLE, 0, 15, 1),
 128 SOC_ENUM("Treble Cut-off", wm8750_enum[2]),
 129
 130 SOC_SINGLE("3D Switch", WM8750_3D, 0, 1, 0),
 131 SOC_SINGLE("3D Volume", WM8750_3D, 1, 15, 0),
 132 SOC_ENUM("3D Lower Cut-off", wm8750_enum[3]),
 133 SOC_ENUM("3D Upper Cut-off", wm8750_enum[4]),
 134 SOC_ENUM("3D Mode", wm8750_enum[5]),
 135
 136 SOC_SINGLE("ALC Capture Target Volume", WM8750_ALC1, 0, 7, 0),
 137 SOC_SINGLE("ALC Capture Max Volume", WM8750_ALC1, 4, 7, 0),
 138 SOC_ENUM("ALC Capture Function", wm8750_enum[6]),
 139 SOC_SINGLE("ALC Capture ZC Switch", WM8750_ALC2, 7, 1, 0),
 140 SOC_SINGLE("ALC Capture Hold Time", WM8750_ALC2, 0, 15, 0),
 141 SOC_SINGLE("ALC Capture Decay Time", WM8750_ALC3, 4, 15, 0),
 142 SOC_SINGLE("ALC Capture Attack Time", WM8750_ALC3, 0, 15, 0),
 143 SOC_SINGLE("ALC Capture NG Threshold", WM8750_NGATE, 3, 31, 0),
 144 SOC_ENUM("ALC Capture NG Type", wm8750_enum[4]),
 145 SOC_SINGLE("ALC Capture NG Switch", WM8750_NGATE, 0, 1, 0),
 146
 147 SOC_SINGLE("Left ADC Capture Volume", WM8750_LADC, 0, 255, 0),
 148 SOC_SINGLE("Right ADC Capture Volume", WM8750_RADC, 0, 255, 0),
 149
 150 SOC_SINGLE("ZC Timeout Switch", WM8750_ADCTL1, 0, 1, 0),
 151 SOC_SINGLE("Playback Invert Switch", WM8750_ADCTL1, 1, 1, 0),
 152
 153 SOC_SINGLE("Right Speaker Playback Invert Switch", WM8750_ADCTL2, 4, 1, 0),
 154
 155 /* Unimplemented */
 156 /* ADCDAC Bit 0 - ADCHPD */
 157 /* ADCDAC Bit 4 - HPOR */
 158 /* ADCTL1 Bit 2,3 - DATSEL */
 159 /* ADCTL1 Bit 4,5 - DMONOMIX */
 160 /* ADCTL1 Bit 6,7 - VSEL */
 161 /* ADCTL2 Bit 2 - LRCM */
 162 /* ADCTL2 Bit 3 - TRI */
 163 /* ADCTL3 Bit 5 - HPFLREN */
 164 /* ADCTL3 Bit 6 - VROI */
 165 /* ADCTL3 Bit 7,8 - ADCLRM */
 166 /* ADCIN Bit 4 - LDCM */
 167 /* ADCIN Bit 5 - RDCM */
 168
 169 SOC_DOUBLE_R("Mic Boost", WM8750_LADCIN, WM8750_RADCIN, 4, 3, 0),
 170
 171 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8750_LOUTM1,
 172         WM8750_LOUTM2, 4, 7, 1),
 173 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8750_ROUTM1,
 174         WM8750_ROUTM2, 4, 7, 1),
 175 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8750_MOUTM1,
 176         WM8750_MOUTM2, 4, 7, 1),
 177
 178 SOC_SINGLE("Mono Playback ZC Switch", WM8750_MOUTV, 7, 1, 0),
 179
 180 SOC_DOUBLE_R("Headphone Playback Volume", WM8750_LOUT1V, WM8750_ROUT1V,
 181         0, 127, 0),
 182 SOC_DOUBLE_R("Speaker Playback Volume", WM8750_LOUT2V, WM8750_ROUT2V,
 183         0, 127, 0),
 184
 185 SOC_SINGLE("Mono Playback Volume", WM8750_MOUTV, 0, 127, 0),
 186
 187 };
 188
 189 /*
 190  * DAPM Controls
 191  */
 192
 193 /* Left Mixer */
 194 static const struct snd_kcontrol_new wm8750_left_mixer_controls[] = {
 195 SOC_DAPM_SINGLE("Playback Switch", WM8750_LOUTM1, 8, 1, 0),
 196 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_LOUTM1, 7, 1, 0),
 197 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_LOUTM2, 8, 1, 0),
 198 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_LOUTM2, 7, 1, 0),
 199 };
 200
 201 /* Right Mixer */
 202 static const struct snd_kcontrol_new wm8750_right_mixer_controls[] = {
 203 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_ROUTM1, 8, 1, 0),
 204 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_ROUTM1, 7, 1, 0),
 205 SOC_DAPM_SINGLE("Playback Switch", WM8750_ROUTM2, 8, 1, 0),
 206 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_ROUTM2, 7, 1, 0),
 207 };
 208
 209 /* Mono Mixer */
 210 static const struct snd_kcontrol_new wm8750_mono_mixer_controls[] = {
 211 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_MOUTM1, 8, 1, 0),
 212 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_MOUTM1, 7, 1, 0),
 213 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_MOUTM2, 8, 1, 0),
 214 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_MOUTM2, 7, 1, 0),
 215 };
 216
 217 /* Left Line Mux */
 218 static const struct snd_kcontrol_new wm8750_left_line_controls =
 219 SOC_DAPM_ENUM("Route", wm8750_enum[8]);
 220
 221 /* Right Line Mux */
 222 static const struct snd_kcontrol_new wm8750_right_line_controls =
 223 SOC_DAPM_ENUM("Route", wm8750_enum[9]);
 224
 225 /* Left PGA Mux */
 226 static const struct snd_kcontrol_new wm8750_left_pga_controls =
 227 SOC_DAPM_ENUM("Route", wm8750_enum[10]);
 228
 229 /* Right PGA Mux */
 230 static const struct snd_kcontrol_new wm8750_right_pga_controls =
 231 SOC_DAPM_ENUM("Route", wm8750_enum[11]);
 232
 233 /* Out 3 Mux */
 234 static const struct snd_kcontrol_new wm8750_out3_controls =
 235 SOC_DAPM_ENUM("Route", wm8750_enum[12]);
 236
 237 /* Differential Mux */
 238 static const struct snd_kcontrol_new wm8750_diffmux_controls =
 239 SOC_DAPM_ENUM("Route", wm8750_enum[13]);
 240
 241 /* Mono ADC Mux */
 242 static const struct snd_kcontrol_new wm8750_monomux_controls =
 243 SOC_DAPM_ENUM("Route", wm8750_enum[16]);
 244
 245 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
 246         SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
 247                 &wm8750_left_mixer_controls[0],
 248                 ARRAY_SIZE(wm8750_left_mixer_controls)),
 249         SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
 250                 &wm8750_right_mixer_controls[0],
 251                 ARRAY_SIZE(wm8750_right_mixer_controls)),
 252         SND_SOC_DAPM_MIXER("Mono Mixer", WM8750_PWR2, 2, 0,
 253                 &wm8750_mono_mixer_controls[0],
 254                 ARRAY_SIZE(wm8750_mono_mixer_controls)),
 255
 256         SND_SOC_DAPM_PGA("Right Out 2", WM8750_PWR2, 3, 0, NULL, 0),
 257         SND_SOC_DAPM_PGA("Left Out 2", WM8750_PWR2, 4, 0, NULL, 0),
 258         SND_SOC_DAPM_PGA("Right Out 1", WM8750_PWR2, 5, 0, NULL, 0),
 259         SND_SOC_DAPM_PGA("Left Out 1", WM8750_PWR2, 6, 0, NULL, 0),
 260         SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8750_PWR2, 7, 0),
 261         SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8750_PWR2, 8, 0),
 262
 263         SND_SOC_DAPM_MICBIAS("Mic Bias", WM8750_PWR1, 1, 0),
 264         SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8750_PWR1, 2, 0),
 265         SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8750_PWR1, 3, 0),
 266
 267         SND_SOC_DAPM_MUX("Left PGA Mux", WM8750_PWR1, 5, 0,
 268                 &wm8750_left_pga_controls),
 269         SND_SOC_DAPM_MUX("Right PGA Mux", WM8750_PWR1, 4, 0,
 270                 &wm8750_right_pga_controls),
 271         SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
 272                 &wm8750_left_line_controls),
 273         SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
 274                 &wm8750_right_line_controls),
 275
 276         SND_SOC_DAPM_MUX("Out3 Mux", SND_SOC_NOPM, 0, 0, &wm8750_out3_controls),
 277         SND_SOC_DAPM_PGA("Out 3", WM8750_PWR2, 1, 0, NULL, 0),
 278         SND_SOC_DAPM_PGA("Mono Out 1", WM8750_PWR2, 2, 0, NULL, 0),
 279
 280         SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
 281                 &wm8750_diffmux_controls),
 282         SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
 283                 &wm8750_monomux_controls),
 284         SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
 285                 &wm8750_monomux_controls),
 286
 287         SND_SOC_DAPM_OUTPUT("LOUT1"),
 288         SND_SOC_DAPM_OUTPUT("ROUT1"),
 289         SND_SOC_DAPM_OUTPUT("LOUT2"),
 290         SND_SOC_DAPM_OUTPUT("ROUT2"),
 291         SND_SOC_DAPM_OUTPUT("MONO1"),
 292         SND_SOC_DAPM_OUTPUT("OUT3"),
 293         SND_SOC_DAPM_OUTPUT("VREF"),
 294
 295         SND_SOC_DAPM_INPUT("LINPUT1"),
 296         SND_SOC_DAPM_INPUT("LINPUT2"),
 297         SND_SOC_DAPM_INPUT("LINPUT3"),
 298         SND_SOC_DAPM_INPUT("RINPUT1"),
 299         SND_SOC_DAPM_INPUT("RINPUT2"),
 300         SND_SOC_DAPM_INPUT("RINPUT3"),
 301 };
 302
 303 static const struct snd_soc_dapm_route audio_map[] = {
 304         /* left mixer */
 305         {"Left Mixer", "Playback Switch", "Left DAC"},
 306         {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
 307         {"Left Mixer", "Right Playback Switch", "Right DAC"},
 308         {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
 309
 310         /* right mixer */
 311         {"Right Mixer", "Left Playback Switch", "Left DAC"},
 312         {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
 313         {"Right Mixer", "Playback Switch", "Right DAC"},
 314         {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
 315
 316         /* left out 1 */
 317         {"Left Out 1", NULL, "Left Mixer"},
 318         {"LOUT1", NULL, "Left Out 1"},
 319
 320         /* left out 2 */
 321         {"Left Out 2", NULL, "Left Mixer"},
 322         {"LOUT2", NULL, "Left Out 2"},
 323
 324         /* right out 1 */
 325         {"Right Out 1", NULL, "Right Mixer"},
 326         {"ROUT1", NULL, "Right Out 1"},
 327
 328         /* right out 2 */
 329         {"Right Out 2", NULL, "Right Mixer"},
 330         {"ROUT2", NULL, "Right Out 2"},
 331
 332         /* mono mixer */
 333         {"Mono Mixer", "Left Playback Switch", "Left DAC"},
 334         {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
 335         {"Mono Mixer", "Right Playback Switch", "Right DAC"},
 336         {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
 337
 338         /* mono out */
 339         {"Mono Out 1", NULL, "Mono Mixer"},
 340         {"MONO1", NULL, "Mono Out 1"},
 341
 342         /* out 3 */
 343         {"Out3 Mux", "VREF", "VREF"},
 344         {"Out3 Mux", "ROUT1 + Vol", "ROUT1"},
 345         {"Out3 Mux", "ROUT1", "Right Mixer"},
 346         {"Out3 Mux", "MonoOut", "MONO1"},
 347         {"Out 3", NULL, "Out3 Mux"},
 348         {"OUT3", NULL, "Out 3"},
 349
 350         /* Left Line Mux */
 351         {"Left Line Mux", "Line 1", "LINPUT1"},
 352         {"Left Line Mux", "Line 2", "LINPUT2"},
 353         {"Left Line Mux", "Line 3", "LINPUT3"},
 354         {"Left Line Mux", "PGA", "Left PGA Mux"},
 355         {"Left Line Mux", "Differential", "Differential Mux"},
 356
 357         /* Right Line Mux */
 358         {"Right Line Mux", "Line 1", "RINPUT1"},
 359         {"Right Line Mux", "Line 2", "RINPUT2"},
 360         {"Right Line Mux", "Line 3", "RINPUT3"},
 361         {"Right Line Mux", "PGA", "Right PGA Mux"},
 362         {"Right Line Mux", "Differential", "Differential Mux"},
 363
 364         /* Left PGA Mux */
 365         {"Left PGA Mux", "Line 1", "LINPUT1"},
 366         {"Left PGA Mux", "Line 2", "LINPUT2"},
 367         {"Left PGA Mux", "Line 3", "LINPUT3"},
 368         {"Left PGA Mux", "Differential", "Differential Mux"},
 369
 370         /* Right PGA Mux */
 371         {"Right PGA Mux", "Line 1", "RINPUT1"},
 372         {"Right PGA Mux", "Line 2", "RINPUT2"},
 373         {"Right PGA Mux", "Line 3", "RINPUT3"},
 374         {"Right PGA Mux", "Differential", "Differential Mux"},
 375
 376         /* Differential Mux */
 377         {"Differential Mux", "Line 1", "LINPUT1"},
 378         {"Differential Mux", "Line 1", "RINPUT1"},
 379         {"Differential Mux", "Line 2", "LINPUT2"},
 380         {"Differential Mux", "Line 2", "RINPUT2"},
 381
 382         /* Left ADC Mux */
 383         {"Left ADC Mux", "Stereo", "Left PGA Mux"},
 384         {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
 385         {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
 386
 387         /* Right ADC Mux */
 388         {"Right ADC Mux", "Stereo", "Right PGA Mux"},
 389         {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
 390         {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
 391
 392         /* ADC */
 393         {"Left ADC", NULL, "Left ADC Mux"},
 394         {"Right ADC", NULL, "Right ADC Mux"},
 395 };
 396
 397 static int wm8750_add_widgets(struct snd_soc_codec *codec)
 398 {
 399         snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
 400                                   ARRAY_SIZE(wm8750_dapm_widgets));
 401
 402         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 403
 404         return 0;
 405 }
 406
 407 struct _coeff_div {
 408         u32 mclk;
 409         u32 rate;
 410         u16 fs;
 411         u8 sr:5;
 412         u8 usb:1;
 413 };
 414
 415 /* codec hifi mclk clock divider coefficients */
 416 static const struct _coeff_div coeff_div[] = {
 417         /* 8k */
 418         {12288000, 8000, 1536, 0x6, 0x0},
 419         {11289600, 8000, 1408, 0x16, 0x0},
 420         {18432000, 8000, 2304, 0x7, 0x0},
 421         {16934400, 8000, 2112, 0x17, 0x0},
 422         {12000000, 8000, 1500, 0x6, 0x1},
 423
 424         /* 11.025k */
 425         {11289600, 11025, 1024, 0x18, 0x0},
 426         {16934400, 11025, 1536, 0x19, 0x0},
 427         {12000000, 11025, 1088, 0x19, 0x1},
 428
 429         /* 16k */
 430         {12288000, 16000, 768, 0xa, 0x0},
 431         {18432000, 16000, 1152, 0xb, 0x0},
 432         {12000000, 16000, 750, 0xa, 0x1},
 433
 434         /* 22.05k */
 435         {11289600, 22050, 512, 0x1a, 0x0},
 436         {16934400, 22050, 768, 0x1b, 0x0},
 437         {12000000, 22050, 544, 0x1b, 0x1},
 438
 439         /* 32k */
 440         {12288000, 32000, 384, 0xc, 0x0},
 441         {18432000, 32000, 576, 0xd, 0x0},
 442         {12000000, 32000, 375, 0xa, 0x1},
 443
 444         /* 44.1k */
 445         {11289600, 44100, 256, 0x10, 0x0},
 446         {16934400, 44100, 384, 0x11, 0x0},
 447         {12000000, 44100, 272, 0x11, 0x1},
 448
 449         /* 48k */
 450         {12288000, 48000, 256, 0x0, 0x0},
 451         {18432000, 48000, 384, 0x1, 0x0},
 452         {12000000, 48000, 250, 0x0, 0x1},
 453
 454         /* 88.2k */
 455         {11289600, 88200, 128, 0x1e, 0x0},
 456         {16934400, 88200, 192, 0x1f, 0x0},
 457         {12000000, 88200, 136, 0x1f, 0x1},
 458
 459         /* 96k */
 460         {12288000, 96000, 128, 0xe, 0x0},
 461         {18432000, 96000, 192, 0xf, 0x0},
 462         {12000000, 96000, 125, 0xe, 0x1},
 463 };
 464
 465 static inline int get_coeff(int mclk, int rate)
 466 {
 467         int i;
 468
 469         for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
 470                 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
 471                         return i;
 472         }
 473
 474         printk(KERN_ERR "wm8750: could not get coeff for mclk %d @ rate %d\n",
 475                 mclk, rate);
 476         return -EINVAL;
 477 }
 478
 479 static int wm8750_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 480                 int clk_id, unsigned int freq, int dir)
 481 {
 482         struct snd_soc_codec *codec = codec_dai->codec;
 483         struct wm8750_priv *wm8750 = codec->private_data;
 484
 485         switch (freq) {
 486         case 11289600:
 487         case 12000000:
 488         case 12288000:
 489         case 16934400:
 490         case 18432000:
 491                 wm8750->sysclk = freq;
 492                 return 0;
 493         }
 494         return -EINVAL;
 495 }
 496
 497 static int wm8750_set_dai_fmt(struct snd_soc_dai *codec_dai,
 498                 unsigned int fmt)
 499 {
 500         struct snd_soc_codec *codec = codec_dai->codec;
 501         u16 iface = 0;
 502
 503         /* set master/slave audio interface */
 504         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 505         case SND_SOC_DAIFMT_CBM_CFM:
 506                 iface = 0x0040;
 507                 break;
 508         case SND_SOC_DAIFMT_CBS_CFS:
 509                 break;
 510         default:
 511                 return -EINVAL;
 512         }
 513
 514         /* interface format */
 515         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 516         case SND_SOC_DAIFMT_I2S:
 517                 iface |= 0x0002;
 518                 break;
 519         case SND_SOC_DAIFMT_RIGHT_J:
 520                 break;
 521         case SND_SOC_DAIFMT_LEFT_J:
 522                 iface |= 0x0001;
 523                 break;
 524         case SND_SOC_DAIFMT_DSP_A:
 525                 iface |= 0x0003;
 526                 break;
 527         case SND_SOC_DAIFMT_DSP_B:
 528                 iface |= 0x0013;
 529                 break;
 530         default:
 531                 return -EINVAL;
 532         }
 533
 534         /* clock inversion */
 535         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 536         case SND_SOC_DAIFMT_NB_NF:
 537                 break;
 538         case SND_SOC_DAIFMT_IB_IF:
 539                 iface |= 0x0090;
 540                 break;
 541         case SND_SOC_DAIFMT_IB_NF:
 542                 iface |= 0x0080;
 543                 break;
 544         case SND_SOC_DAIFMT_NB_IF:
 545                 iface |= 0x0010;
 546                 break;
 547         default:
 548                 return -EINVAL;
 549         }
 550
 551         snd_soc_write(codec, WM8750_IFACE, iface);
 552         return 0;
 553 }
 554
 555 static int wm8750_pcm_hw_params(struct snd_pcm_substream *substream,
 556                                 struct snd_pcm_hw_params *params,
 557                                 struct snd_soc_dai *dai)
 558 {
 559         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 560         struct snd_soc_device *socdev = rtd->socdev;
 561         struct snd_soc_codec *codec = socdev->card->codec;
 562         struct wm8750_priv *wm8750 = codec->private_data;
 563         u16 iface = snd_soc_read(codec, WM8750_IFACE) & 0x1f3;
 564         u16 srate = snd_soc_read(codec, WM8750_SRATE) & 0x1c0;
 565         int coeff = get_coeff(wm8750->sysclk, params_rate(params));
 566
 567         /* bit size */
 568         switch (params_format(params)) {
 569         case SNDRV_PCM_FORMAT_S16_LE:
 570                 break;
 571         case SNDRV_PCM_FORMAT_S20_3LE:
 572                 iface |= 0x0004;
 573                 break;
 574         case SNDRV_PCM_FORMAT_S24_LE:
 575                 iface |= 0x0008;
 576                 break;
 577         case SNDRV_PCM_FORMAT_S32_LE:
 578                 iface |= 0x000c;
 579                 break;
 580         }
 581
 582         /* set iface & srate */
 583         snd_soc_write(codec, WM8750_IFACE, iface);
 584         if (coeff >= 0)
 585                 snd_soc_write(codec, WM8750_SRATE, srate |
 586                         (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
 587
 588         return 0;
 589 }
 590
 591 static int wm8750_mute(struct snd_soc_dai *dai, int mute)
 592 {
 593         struct snd_soc_codec *codec = dai->codec;
 594         u16 mute_reg = snd_soc_read(codec, WM8750_ADCDAC) & 0xfff7;
 595
 596         if (mute)
 597                 snd_soc_write(codec, WM8750_ADCDAC, mute_reg | 0x8);
 598         else
 599                 snd_soc_write(codec, WM8750_ADCDAC, mute_reg);
 600         return 0;
 601 }
 602
 603 static int wm8750_set_bias_level(struct snd_soc_codec *codec,
 604                                  enum snd_soc_bias_level level)
 605 {
 606         u16 pwr_reg = snd_soc_read(codec, WM8750_PWR1) & 0xfe3e;
 607
 608         switch (level) {
 609         case SND_SOC_BIAS_ON:
 610                 /* set vmid to 50k and unmute dac */
 611                 snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x00c0);
 612                 break;
 613         case SND_SOC_BIAS_PREPARE:
 614                 break;
 615         case SND_SOC_BIAS_STANDBY:
 616                 if (codec->bias_level == SND_SOC_BIAS_OFF) {
 617                         /* Set VMID to 5k */
 618                         snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x01c1);
 619
 620                         /* ...and ramp */
 621                         msleep(1000);
 622                 }
 623
 624                 /* mute dac and set vmid to 500k, enable VREF */
 625                 snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x0141);
 626                 break;
 627         case SND_SOC_BIAS_OFF:
 628                 snd_soc_write(codec, WM8750_PWR1, 0x0001);
 629                 break;
 630         }
 631         codec->bias_level = level;
 632         return 0;
 633 }
 634
 635 #define WM8750_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 636         SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
 637         SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
 638
 639 #define WM8750_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 640         SNDRV_PCM_FMTBIT_S24_LE)
 641
 642 static struct snd_soc_dai_ops wm8750_dai_ops = {
 643         .hw_params      = wm8750_pcm_hw_params,
 644         .digital_mute   = wm8750_mute,
 645         .set_fmt        = wm8750_set_dai_fmt,
 646         .set_sysclk     = wm8750_set_dai_sysclk,
 647 };
 648
 649 struct snd_soc_dai wm8750_dai = {
 650         .name = "WM8750",
 651         .playback = {
 652                 .stream_name = "Playback",
 653                 .channels_min = 1,
 654                 .channels_max = 2,
 655                 .rates = WM8750_RATES,
 656                 .formats = WM8750_FORMATS,},
 657         .capture = {
 658                 .stream_name = "Capture",
 659                 .channels_min = 1,
 660                 .channels_max = 2,
 661                 .rates = WM8750_RATES,
 662                 .formats = WM8750_FORMATS,},
 663         .ops = &wm8750_dai_ops,
 664 };
 665 EXPORT_SYMBOL_GPL(wm8750_dai);
 666
 667 static int wm8750_suspend(struct platform_device *pdev, pm_message_t state)
 668 {
 669         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 670         struct snd_soc_codec *codec = socdev->card->codec;
 671
 672         wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF);
 673         return 0;
 674 }
 675
 676 static int wm8750_resume(struct platform_device *pdev)
 677 {
 678         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 679         struct snd_soc_codec *codec = socdev->card->codec;
 680         int i;
 681         u8 data[2];
 682         u16 *cache = codec->reg_cache;
 683
 684         /* Sync reg_cache with the hardware */
 685         for (i = 0; i < ARRAY_SIZE(wm8750_reg); i++) {
 686                 if (i == WM8750_RESET)
 687                         continue;
 688                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 689                 data[1] = cache[i] & 0x00ff;
 690                 codec->hw_write(codec->control_data, data, 2);
 691         }
 692
 693         wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 694
 695         return 0;
 696 }
 697
 698 /*
 699  * initialise the WM8750 driver
 700  * register the mixer and dsp interfaces with the kernel
 701  */
 702 static int wm8750_init(struct snd_soc_device *socdev,
 703                        enum snd_soc_control_type control)
 704 {
 705         struct snd_soc_codec *codec = socdev->card->codec;
 706         int reg, ret = 0;
 707
 708         codec->name = "WM8750";
 709         codec->owner = THIS_MODULE;
 710         codec->set_bias_level = wm8750_set_bias_level;
 711         codec->dai = &wm8750_dai;
 712         codec->num_dai = 1;
 713         codec->reg_cache_size = ARRAY_SIZE(wm8750_reg);
 714         codec->reg_cache = kmemdup(wm8750_reg, sizeof(wm8750_reg), GFP_KERNEL);
 715         if (codec->reg_cache == NULL)
 716                 return -ENOMEM;
 717
 718         ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
 719         if (ret < 0) {
 720                 printk(KERN_ERR "wm8750: failed to set cache I/O: %d\n", ret);
 721                 goto err;
 722         }
 723
 724         ret = wm8750_reset(codec);
 725         if (ret < 0) {
 726                 printk(KERN_ERR "wm8750: failed to reset: %d\n", ret);
 727                 goto err;
 728         }
 729
 730         /* register pcms */
 731         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 732         if (ret < 0) {
 733                 printk(KERN_ERR "wm8750: failed to create pcms\n");
 734                 goto err;
 735         }
 736
 737         /* charge output caps */
 738         wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 739
 740         /* set the update bits */
 741         reg = snd_soc_read(codec, WM8750_LDAC);
 742         snd_soc_write(codec, WM8750_LDAC, reg | 0x0100);
 743         reg = snd_soc_read(codec, WM8750_RDAC);
 744         snd_soc_write(codec, WM8750_RDAC, reg | 0x0100);
 745         reg = snd_soc_read(codec, WM8750_LOUT1V);
 746         snd_soc_write(codec, WM8750_LOUT1V, reg | 0x0100);
 747         reg = snd_soc_read(codec, WM8750_ROUT1V);
 748         snd_soc_write(codec, WM8750_ROUT1V, reg | 0x0100);
 749         reg = snd_soc_read(codec, WM8750_LOUT2V);
 750         snd_soc_write(codec, WM8750_LOUT2V, reg | 0x0100);
 751         reg = snd_soc_read(codec, WM8750_ROUT2V);
 752         snd_soc_write(codec, WM8750_ROUT2V, reg | 0x0100);
 753         reg = snd_soc_read(codec, WM8750_LINVOL);
 754         snd_soc_write(codec, WM8750_LINVOL, reg | 0x0100);
 755         reg = snd_soc_read(codec, WM8750_RINVOL);
 756         snd_soc_write(codec, WM8750_RINVOL, reg | 0x0100);
 757
 758         snd_soc_add_controls(codec, wm8750_snd_controls,
 759                                 ARRAY_SIZE(wm8750_snd_controls));
 760         wm8750_add_widgets(codec);
 761         return ret;
 762
 763 err:
 764         kfree(codec->reg_cache);
 765         return ret;
 766 }
 767
 768 /* If the i2c layer weren't so broken, we could pass this kind of data
 769    around */
 770 static struct snd_soc_device *wm8750_socdev;
 771
 772 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 773
 774 /*
 775  * WM8750 2 wire address is determined by GPIO5
 776  * state during powerup.
 777  *    low  = 0x1a
 778  *    high = 0x1b
 779  */
 780
 781 static int wm8750_i2c_probe(struct i2c_client *i2c,
 782                             const struct i2c_device_id *id)
 783 {
 784         struct snd_soc_device *socdev = wm8750_socdev;
 785         struct snd_soc_codec *codec = socdev->card->codec;
 786         int ret;
 787
 788         i2c_set_clientdata(i2c, codec);
 789         codec->control_data = i2c;
 790
 791         ret = wm8750_init(socdev, SND_SOC_I2C);
 792         if (ret < 0)
 793                 pr_err("failed to initialise WM8750\n");
 794
 795         return ret;
 796 }
 797
 798 static int wm8750_i2c_remove(struct i2c_client *client)
 799 {
 800         struct snd_soc_codec *codec = i2c_get_clientdata(client);
 801         kfree(codec->reg_cache);
 802         return 0;
 803 }
 804
 805 static const struct i2c_device_id wm8750_i2c_id[] = {
 806         { "wm8750", 0 },
 807         { }
 808 };
 809 MODULE_DEVICE_TABLE(i2c, wm8750_i2c_id);
 810
 811 static struct i2c_driver wm8750_i2c_driver = {
 812         .driver = {
 813                 .name = "WM8750 I2C Codec",
 814                 .owner = THIS_MODULE,
 815         },
 816         .probe =    wm8750_i2c_probe,
 817         .remove =   wm8750_i2c_remove,
 818         .id_table = wm8750_i2c_id,
 819 };
 820
 821 static int wm8750_add_i2c_device(struct platform_device *pdev,
 822                                  const struct wm8750_setup_data *setup)
 823 {
 824         struct i2c_board_info info;
 825         struct i2c_adapter *adapter;
 826         struct i2c_client *client;
 827         int ret;
 828
 829         ret = i2c_add_driver(&wm8750_i2c_driver);
 830         if (ret != 0) {
 831                 dev_err(&pdev->dev, "can't add i2c driver\n");
 832                 return ret;
 833         }
 834
 835         memset(&info, 0, sizeof(struct i2c_board_info));
 836         info.addr = setup->i2c_address;
 837         strlcpy(info.type, "wm8750", I2C_NAME_SIZE);
 838
 839         adapter = i2c_get_adapter(setup->i2c_bus);
 840         if (!adapter) {
 841                 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
 842                         setup->i2c_bus);
 843                 goto err_driver;
 844         }
 845
 846         client = i2c_new_device(adapter, &info);
 847         i2c_put_adapter(adapter);
 848         if (!client) {
 849                 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
 850                         (unsigned int)info.addr);
 851                 goto err_driver;
 852         }
 853
 854         return 0;
 855
 856 err_driver:
 857         i2c_del_driver(&wm8750_i2c_driver);
 858         return -ENODEV;
 859 }
 860 #endif
 861
 862 #if defined(CONFIG_SPI_MASTER)
 863 static int __devinit wm8750_spi_probe(struct spi_device *spi)
 864 {
 865         struct snd_soc_device *socdev = wm8750_socdev;
 866         struct snd_soc_codec *codec = socdev->card->codec;
 867         int ret;
 868
 869         codec->control_data = spi;
 870
 871         ret = wm8750_init(socdev, SND_SOC_SPI);
 872         if (ret < 0)
 873                 dev_err(&spi->dev, "failed to initialise WM8750\n");
 874
 875         return ret;
 876 }
 877
 878 static int __devexit wm8750_spi_remove(struct spi_device *spi)
 879 {
 880         return 0;
 881 }
 882
 883 static struct spi_driver wm8750_spi_driver = {
 884         .driver = {
 885                 .name   = "wm8750",
 886                 .bus    = &spi_bus_type,
 887                 .owner  = THIS_MODULE,
 888         },
 889         .probe          = wm8750_spi_probe,
 890         .remove         = __devexit_p(wm8750_spi_remove),
 891 };
 892 #endif
 893
 894 static int wm8750_probe(struct platform_device *pdev)
 895 {
 896         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 897         struct wm8750_setup_data *setup = socdev->codec_data;
 898         struct snd_soc_codec *codec;
 899         struct wm8750_priv *wm8750;
 900         int ret;
 901
 902         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 903         if (codec == NULL)
 904                 return -ENOMEM;
 905
 906         wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
 907         if (wm8750 == NULL) {
 908                 kfree(codec);
 909                 return -ENOMEM;
 910         }
 911
 912         codec->private_data = wm8750;
 913         socdev->card->codec = codec;
 914         mutex_init(&codec->mutex);
 915         INIT_LIST_HEAD(&codec->dapm_widgets);
 916         INIT_LIST_HEAD(&codec->dapm_paths);
 917         wm8750_socdev = socdev;
 918
 919         ret = -ENODEV;
 920
 921 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 922         if (setup->i2c_address) {
 923                 ret = wm8750_add_i2c_device(pdev, setup);
 924         }
 925 #endif
 926 #if defined(CONFIG_SPI_MASTER)
 927         if (setup->spi) {
 928                 ret = spi_register_driver(&wm8750_spi_driver);
 929                 if (ret != 0)
 930                         printk(KERN_ERR "can't add spi driver");
 931         }
 932 #endif
 933
 934         if (ret != 0) {
 935                 kfree(codec->private_data);
 936                 kfree(codec);
 937         }
 938         return ret;
 939 }
 940
 941 /* power down chip */
 942 static int wm8750_remove(struct platform_device *pdev)
 943 {
 944         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 945         struct snd_soc_codec *codec = socdev->card->codec;
 946
 947         if (codec->control_data)
 948                 wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF);
 949         snd_soc_free_pcms(socdev);
 950         snd_soc_dapm_free(socdev);
 951 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 952         i2c_unregister_device(codec->control_data);
 953         i2c_del_driver(&wm8750_i2c_driver);
 954 #endif
 955 #if defined(CONFIG_SPI_MASTER)
 956         spi_unregister_driver(&wm8750_spi_driver);
 957 #endif
 958         kfree(codec->private_data);
 959         kfree(codec);
 960
 961         return 0;
 962 }
 963
 964 struct snd_soc_codec_device soc_codec_dev_wm8750 = {
 965         .probe =        wm8750_probe,
 966         .remove =       wm8750_remove,
 967         .suspend =      wm8750_suspend,
 968         .resume =       wm8750_resume,
 969 };
 970 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8750);
 971
 972 static int __init wm8750_modinit(void)
 973 {
 974         return snd_soc_register_dai(&wm8750_dai);
 975 }
 976 module_init(wm8750_modinit);
 977
 978 static void __exit wm8750_exit(void)
 979 {
 980         snd_soc_unregister_dai(&wm8750_dai);
 981 }
 982 module_exit(wm8750_exit);
 983
 984 MODULE_DESCRIPTION("ASoC WM8750 driver");
 985 MODULE_AUTHOR("Liam Girdwood");
 986 MODULE_LICENSE("GPL");