sound/soc/codecs/wm8960.c

   1 /*
   2  * wm8960.c  --  WM8960 ALSA SoC Audio driver
   3  *
   4  * Author: Liam Girdwood
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 #include <linux/module.h>
  12 #include <linux/moduleparam.h>
  13 #include <linux/init.h>
  14 #include <linux/delay.h>
  15 #include <linux/pm.h>
  16 #include <linux/i2c.h>
  17 #include <linux/slab.h>
  18 #include <sound/core.h>
  19 #include <sound/pcm.h>
  20 #include <sound/pcm_params.h>
  21 #include <sound/soc.h>
  22 #include <sound/initval.h>
  23 #include <sound/tlv.h>
  24 #include <sound/wm8960.h>
  25
  26 #include "wm8960.h"
  27
  28 /* R25 - Power 1 */
  29 #define WM8960_VMID_MASK 0x180
  30 #define WM8960_VREF      0x40
  31
  32 /* R26 - Power 2 */
  33 #define WM8960_PWR2_LOUT1       0x40
  34 #define WM8960_PWR2_ROUT1       0x20
  35 #define WM8960_PWR2_OUT3        0x02
  36
  37 /* R28 - Anti-pop 1 */
  38 #define WM8960_POBCTRL   0x80
  39 #define WM8960_BUFDCOPEN 0x10
  40 #define WM8960_BUFIOEN   0x08
  41 #define WM8960_SOFT_ST   0x04
  42 #define WM8960_HPSTBY    0x01
  43
  44 /* R29 - Anti-pop 2 */
  45 #define WM8960_DISOP     0x40
  46 #define WM8960_DRES_MASK 0x30
  47
  48 /*
  49  * wm8960 register cache
  50  * We can't read the WM8960 register space when we are
  51  * using 2 wire for device control, so we cache them instead.
  52  */
  53 static const u16 wm8960_reg[WM8960_CACHEREGNUM] = {
  54         0x0097, 0x0097, 0x0000, 0x0000,
  55         0x0000, 0x0008, 0x0000, 0x000a,
  56         0x01c0, 0x0000, 0x00ff, 0x00ff,
  57         0x0000, 0x0000, 0x0000, 0x0000,
  58         0x0000, 0x007b, 0x0100, 0x0032,
  59         0x0000, 0x00c3, 0x00c3, 0x01c0,
  60         0x0000, 0x0000, 0x0000, 0x0000,
  61         0x0000, 0x0000, 0x0000, 0x0000,
  62         0x0100, 0x0100, 0x0050, 0x0050,
  63         0x0050, 0x0050, 0x0000, 0x0000,
  64         0x0000, 0x0000, 0x0040, 0x0000,
  65         0x0000, 0x0050, 0x0050, 0x0000,
  66         0x0002, 0x0037, 0x004d, 0x0080,
  67         0x0008, 0x0031, 0x0026, 0x00e9,
  68 };
  69
  70 struct wm8960_priv {
  71         enum snd_soc_control_type control_type;
  72         int (*set_bias_level)(struct snd_soc_codec *,
  73                               enum snd_soc_bias_level level);
  74         struct snd_soc_dapm_widget *lout1;
  75         struct snd_soc_dapm_widget *rout1;
  76         struct snd_soc_dapm_widget *out3;
  77         bool deemph;
  78         int playback_fs;
  79 };
  80
  81 #define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0)
  82
  83 /* enumerated controls */
  84 static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
  85         "Right Inverted", "Stereo Inversion"};
  86 static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
  87 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
  88 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
  89 static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
  90
  91 static const struct soc_enum wm8960_enum[] = {
  92         SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
  93         SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
  94         SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
  95         SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
  96         SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
  97         SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
  98 };
  99
 100 static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
 101
 102 static int wm8960_set_deemph(struct snd_soc_codec *codec)
 103 {
 104         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 105         int val, i, best;
 106
 107         /* If we're using deemphasis select the nearest available sample
 108          * rate.
 109          */
 110         if (wm8960->deemph) {
 111                 best = 1;
 112                 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
 113                         if (abs(deemph_settings[i] - wm8960->playback_fs) <
 114                             abs(deemph_settings[best] - wm8960->playback_fs))
 115                                 best = i;
 116                 }
 117
 118                 val = best << 1;
 119         } else {
 120                 val = 0;
 121         }
 122
 123         dev_dbg(codec->dev, "Set deemphasis %d\n", val);
 124
 125         return snd_soc_update_bits(codec, WM8960_DACCTL1,
 126                                    0x6, val);
 127 }
 128
 129 static int wm8960_get_deemph(struct snd_kcontrol *kcontrol,
 130                              struct snd_ctl_elem_value *ucontrol)
 131 {
 132         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 133         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 134
 135         ucontrol->value.enumerated.item[0] = wm8960->deemph;
 136         return 0;
 137 }
 138
 139 static int wm8960_put_deemph(struct snd_kcontrol *kcontrol,
 140                              struct snd_ctl_elem_value *ucontrol)
 141 {
 142         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 143         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 144         int deemph = ucontrol->value.enumerated.item[0];
 145
 146         if (deemph > 1)
 147                 return -EINVAL;
 148
 149         wm8960->deemph = deemph;
 150
 151         return wm8960_set_deemph(codec);
 152 }
 153
 154 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0);
 155 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);
 156 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
 157 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
 158
 159 static const struct snd_kcontrol_new wm8960_snd_controls[] = {
 160 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
 161                  0, 63, 0, adc_tlv),
 162 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
 163         6, 1, 0),
 164 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
 165         7, 1, 0),
 166
 167 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
 168                  0, 255, 0, dac_tlv),
 169
 170 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
 171                  0, 127, 0, out_tlv),
 172 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
 173         7, 1, 0),
 174
 175 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
 176                  0, 127, 0, out_tlv),
 177 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
 178         7, 1, 0),
 179 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
 180 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
 181
 182 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
 183 SOC_ENUM("ADC Polarity", wm8960_enum[0]),
 184 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
 185
 186 SOC_ENUM("DAC Polarity", wm8960_enum[2]),
 187 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
 188                     wm8960_get_deemph, wm8960_put_deemph),
 189
 190 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]),
 191 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]),
 192 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
 193 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
 194
 195 SOC_ENUM("ALC Function", wm8960_enum[4]),
 196 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
 197 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
 198 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
 199 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
 200 SOC_ENUM("ALC Mode", wm8960_enum[5]),
 201 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
 202 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
 203
 204 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
 205 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
 206
 207 SOC_DOUBLE_R("ADC PCM Capture Volume", WM8960_LINPATH, WM8960_RINPATH,
 208         0, 127, 0),
 209
 210 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
 211                WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
 212 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
 213                WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
 214 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
 215                WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
 216 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
 217                WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
 218 };
 219
 220 static const struct snd_kcontrol_new wm8960_lin_boost[] = {
 221 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
 222 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
 223 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
 224 };
 225
 226 static const struct snd_kcontrol_new wm8960_lin[] = {
 227 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
 228 };
 229
 230 static const struct snd_kcontrol_new wm8960_rin_boost[] = {
 231 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
 232 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
 233 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
 234 };
 235
 236 static const struct snd_kcontrol_new wm8960_rin[] = {
 237 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
 238 };
 239
 240 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
 241 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
 242 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
 243 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
 244 };
 245
 246 static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
 247 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
 248 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
 249 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
 250 };
 251
 252 static const struct snd_kcontrol_new wm8960_mono_out[] = {
 253 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
 254 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
 255 };
 256
 257 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
 258 SND_SOC_DAPM_INPUT("LINPUT1"),
 259 SND_SOC_DAPM_INPUT("RINPUT1"),
 260 SND_SOC_DAPM_INPUT("LINPUT2"),
 261 SND_SOC_DAPM_INPUT("RINPUT2"),
 262 SND_SOC_DAPM_INPUT("LINPUT3"),
 263 SND_SOC_DAPM_INPUT("RINPUT3"),
 264
 265 SND_SOC_DAPM_SUPPLY("MICB", WM8960_POWER1, 1, 0, NULL, 0),
 266
 267 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
 268                    wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
 269 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
 270                    wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
 271
 272 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
 273                    wm8960_lin, ARRAY_SIZE(wm8960_lin)),
 274 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
 275                    wm8960_rin, ARRAY_SIZE(wm8960_rin)),
 276
 277 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0),
 278 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0),
 279
 280 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
 281 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
 282
 283 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
 284         &wm8960_loutput_mixer[0],
 285         ARRAY_SIZE(wm8960_loutput_mixer)),
 286 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
 287         &wm8960_routput_mixer[0],
 288         ARRAY_SIZE(wm8960_routput_mixer)),
 289
 290 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
 291 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
 292
 293 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
 294 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
 295
 296 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
 297 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
 298
 299 SND_SOC_DAPM_OUTPUT("SPK_LP"),
 300 SND_SOC_DAPM_OUTPUT("SPK_LN"),
 301 SND_SOC_DAPM_OUTPUT("HP_L"),
 302 SND_SOC_DAPM_OUTPUT("HP_R"),
 303 SND_SOC_DAPM_OUTPUT("SPK_RP"),
 304 SND_SOC_DAPM_OUTPUT("SPK_RN"),
 305 SND_SOC_DAPM_OUTPUT("OUT3"),
 306 };
 307
 308 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = {
 309 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
 310         &wm8960_mono_out[0],
 311         ARRAY_SIZE(wm8960_mono_out)),
 312 };
 313
 314 /* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */
 315 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = {
 316 SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0),
 317 };
 318
 319 static const struct snd_soc_dapm_route audio_paths[] = {
 320         { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
 321         { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
 322         { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
 323
 324         { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", },
 325         { "Left Input Mixer", NULL, "LINPUT1", },  /* Really Boost Switch */
 326         { "Left Input Mixer", NULL, "LINPUT2" },
 327         { "Left Input Mixer", NULL, "LINPUT3" },
 328
 329         { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
 330         { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
 331         { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
 332
 333         { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", },
 334         { "Right Input Mixer", NULL, "RINPUT1", },  /* Really Boost Switch */
 335         { "Right Input Mixer", NULL, "RINPUT2" },
 336         { "Right Input Mixer", NULL, "LINPUT3" },
 337
 338         { "Left ADC", NULL, "Left Input Mixer" },
 339         { "Right ADC", NULL, "Right Input Mixer" },
 340
 341         { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
 342         { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} ,
 343         { "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
 344
 345         { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
 346         { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } ,
 347         { "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
 348
 349         { "LOUT1 PGA", NULL, "Left Output Mixer" },
 350         { "ROUT1 PGA", NULL, "Right Output Mixer" },
 351
 352         { "HP_L", NULL, "LOUT1 PGA" },
 353         { "HP_R", NULL, "ROUT1 PGA" },
 354
 355         { "Left Speaker PGA", NULL, "Left Output Mixer" },
 356         { "Right Speaker PGA", NULL, "Right Output Mixer" },
 357
 358         { "Left Speaker Output", NULL, "Left Speaker PGA" },
 359         { "Right Speaker Output", NULL, "Right Speaker PGA" },
 360
 361         { "SPK_LN", NULL, "Left Speaker Output" },
 362         { "SPK_LP", NULL, "Left Speaker Output" },
 363         { "SPK_RN", NULL, "Right Speaker Output" },
 364         { "SPK_RP", NULL, "Right Speaker Output" },
 365 };
 366
 367 static const struct snd_soc_dapm_route audio_paths_out3[] = {
 368         { "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
 369         { "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
 370
 371         { "OUT3", NULL, "Mono Output Mixer", }
 372 };
 373
 374 static const struct snd_soc_dapm_route audio_paths_capless[] = {
 375         { "HP_L", NULL, "OUT3 VMID" },
 376         { "HP_R", NULL, "OUT3 VMID" },
 377
 378         { "OUT3 VMID", NULL, "Left Output Mixer" },
 379         { "OUT3 VMID", NULL, "Right Output Mixer" },
 380 };
 381
 382 static int wm8960_add_widgets(struct snd_soc_codec *codec)
 383 {
 384         struct wm8960_data *pdata = codec->dev->platform_data;
 385         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 386         struct snd_soc_dapm_context *dapm = &codec->dapm;
 387         struct snd_soc_dapm_widget *w;
 388
 389         snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets,
 390                                   ARRAY_SIZE(wm8960_dapm_widgets));
 391
 392         snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths));
 393
 394         /* In capless mode OUT3 is used to provide VMID for the
 395          * headphone outputs, otherwise it is used as a mono mixer.
 396          */
 397         if (pdata && pdata->capless) {
 398                 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_capless,
 399                                           ARRAY_SIZE(wm8960_dapm_widgets_capless));
 400
 401                 snd_soc_dapm_add_routes(dapm, audio_paths_capless,
 402                                         ARRAY_SIZE(audio_paths_capless));
 403         } else {
 404                 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_out3,
 405                                           ARRAY_SIZE(wm8960_dapm_widgets_out3));
 406
 407                 snd_soc_dapm_add_routes(dapm, audio_paths_out3,
 408                                         ARRAY_SIZE(audio_paths_out3));
 409         }
 410
 411         /* We need to power up the headphone output stage out of
 412          * sequence for capless mode.  To save scanning the widget
 413          * list each time to find the desired power state do so now
 414          * and save the result.
 415          */
 416         list_for_each_entry(w, &codec->card->widgets, list) {
 417                 if (w->dapm != &codec->dapm)
 418                         continue;
 419                 if (strcmp(w->name, "LOUT1 PGA") == 0)
 420                         wm8960->lout1 = w;
 421                 if (strcmp(w->name, "ROUT1 PGA") == 0)
 422                         wm8960->rout1 = w;
 423                 if (strcmp(w->name, "OUT3 VMID") == 0)
 424                         wm8960->out3 = w;
 425         }
 426
 427         return 0;
 428 }
 429
 430 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
 431                 unsigned int fmt)
 432 {
 433         struct snd_soc_codec *codec = codec_dai->codec;
 434         u16 iface = 0;
 435
 436         /* set master/slave audio interface */
 437         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 438         case SND_SOC_DAIFMT_CBM_CFM:
 439                 iface |= 0x0040;
 440                 break;
 441         case SND_SOC_DAIFMT_CBS_CFS:
 442                 break;
 443         default:
 444                 return -EINVAL;
 445         }
 446
 447         /* interface format */
 448         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 449         case SND_SOC_DAIFMT_I2S:
 450                 iface |= 0x0002;
 451                 break;
 452         case SND_SOC_DAIFMT_RIGHT_J:
 453                 break;
 454         case SND_SOC_DAIFMT_LEFT_J:
 455                 iface |= 0x0001;
 456                 break;
 457         case SND_SOC_DAIFMT_DSP_A:
 458                 iface |= 0x0003;
 459                 break;
 460         case SND_SOC_DAIFMT_DSP_B:
 461                 iface |= 0x0013;
 462                 break;
 463         default:
 464                 return -EINVAL;
 465         }
 466
 467         /* clock inversion */
 468         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 469         case SND_SOC_DAIFMT_NB_NF:
 470                 break;
 471         case SND_SOC_DAIFMT_IB_IF:
 472                 iface |= 0x0090;
 473                 break;
 474         case SND_SOC_DAIFMT_IB_NF:
 475                 iface |= 0x0080;
 476                 break;
 477         case SND_SOC_DAIFMT_NB_IF:
 478                 iface |= 0x0010;
 479                 break;
 480         default:
 481                 return -EINVAL;
 482         }
 483
 484         /* set iface */
 485         snd_soc_write(codec, WM8960_IFACE1, iface);
 486         return 0;
 487 }
 488
 489 static struct {
 490         int rate;
 491         unsigned int val;
 492 } alc_rates[] = {
 493         { 48000, 0 },
 494         { 44100, 0 },
 495         { 32000, 1 },
 496         { 22050, 2 },
 497         { 24000, 2 },
 498         { 16000, 3 },
 499         { 11250, 4 },
 500         { 12000, 4 },
 501         {  8000, 5 },
 502 };
 503
 504 static int wm8960_hw_params(struct snd_pcm_substream *substream,
 505                             struct snd_pcm_hw_params *params,
 506                             struct snd_soc_dai *dai)
 507 {
 508         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 509         struct snd_soc_codec *codec = rtd->codec;
 510         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 511         u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3;
 512         int i;
 513
 514         /* bit size */
 515         switch (params_format(params)) {
 516         case SNDRV_PCM_FORMAT_S16_LE:
 517                 break;
 518         case SNDRV_PCM_FORMAT_S20_3LE:
 519                 iface |= 0x0004;
 520                 break;
 521         case SNDRV_PCM_FORMAT_S24_LE:
 522                 iface |= 0x0008;
 523                 break;
 524         }
 525
 526         /* Update filters for the new rate */
 527         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 528                 wm8960->playback_fs = params_rate(params);
 529                 wm8960_set_deemph(codec);
 530         } else {
 531                 for (i = 0; i < ARRAY_SIZE(alc_rates); i++)
 532                         if (alc_rates[i].rate == params_rate(params))
 533                                 snd_soc_update_bits(codec,
 534                                                     WM8960_ADDCTL3, 0x7,
 535                                                     alc_rates[i].val);
 536         }
 537
 538         /* set iface */
 539         snd_soc_write(codec, WM8960_IFACE1, iface);
 540         return 0;
 541 }
 542
 543 static int wm8960_mute(struct snd_soc_dai *dai, int mute)
 544 {
 545         struct snd_soc_codec *codec = dai->codec;
 546
 547         if (mute)
 548                 snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0x8);
 549         else
 550                 snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0);
 551         return 0;
 552 }
 553
 554 static int wm8960_set_bias_level_out3(struct snd_soc_codec *codec,
 555                                       enum snd_soc_bias_level level)
 556 {
 557         switch (level) {
 558         case SND_SOC_BIAS_ON:
 559                 break;
 560
 561         case SND_SOC_BIAS_PREPARE:
 562                 /* Set VMID to 2x50k */
 563                 snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x80);
 564                 break;
 565
 566         case SND_SOC_BIAS_STANDBY:
 567                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
 568                         snd_soc_cache_sync(codec);
 569
 570                         /* Enable anti-pop features */
 571                         snd_soc_write(codec, WM8960_APOP1,
 572                                       WM8960_POBCTRL | WM8960_SOFT_ST |
 573                                       WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 574
 575                         /* Enable & ramp VMID at 2x50k */
 576                         snd_soc_update_bits(codec, WM8960_POWER1, 0x80, 0x80);
 577                         msleep(100);
 578
 579                         /* Enable VREF */
 580                         snd_soc_update_bits(codec, WM8960_POWER1, WM8960_VREF,
 581                                             WM8960_VREF);
 582
 583                         /* Disable anti-pop features */
 584                         snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
 585                 }
 586
 587                 /* Set VMID to 2x250k */
 588                 snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x100);
 589                 break;
 590
 591         case SND_SOC_BIAS_OFF:
 592                 /* Enable anti-pop features */
 593                 snd_soc_write(codec, WM8960_APOP1,
 594                              WM8960_POBCTRL | WM8960_SOFT_ST |
 595                              WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 596
 597                 /* Disable VMID and VREF, let them discharge */
 598                 snd_soc_write(codec, WM8960_POWER1, 0);
 599                 msleep(600);
 600                 break;
 601         }
 602
 603         codec->dapm.bias_level = level;
 604
 605         return 0;
 606 }
 607
 608 static int wm8960_set_bias_level_capless(struct snd_soc_codec *codec,
 609                                          enum snd_soc_bias_level level)
 610 {
 611         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 612         int reg;
 613
 614         switch (level) {
 615         case SND_SOC_BIAS_ON:
 616                 break;
 617
 618         case SND_SOC_BIAS_PREPARE:
 619                 switch (codec->dapm.bias_level) {
 620                 case SND_SOC_BIAS_STANDBY:
 621                         /* Enable anti pop mode */
 622                         snd_soc_update_bits(codec, WM8960_APOP1,
 623                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 624                                             WM8960_BUFDCOPEN,
 625                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 626                                             WM8960_BUFDCOPEN);
 627
 628                         /* Enable LOUT1, ROUT1 and OUT3 if they're enabled */
 629                         reg = 0;
 630                         if (wm8960->lout1 && wm8960->lout1->power)
 631                                 reg |= WM8960_PWR2_LOUT1;
 632                         if (wm8960->rout1 && wm8960->rout1->power)
 633                                 reg |= WM8960_PWR2_ROUT1;
 634                         if (wm8960->out3 && wm8960->out3->power)
 635                                 reg |= WM8960_PWR2_OUT3;
 636                         snd_soc_update_bits(codec, WM8960_POWER2,
 637                                             WM8960_PWR2_LOUT1 |
 638                                             WM8960_PWR2_ROUT1 |
 639                                             WM8960_PWR2_OUT3, reg);
 640
 641                         /* Enable VMID at 2*50k */
 642                         snd_soc_update_bits(codec, WM8960_POWER1,
 643                                             WM8960_VMID_MASK, 0x80);
 644
 645                         /* Ramp */
 646                         msleep(100);
 647
 648                         /* Enable VREF */
 649                         snd_soc_update_bits(codec, WM8960_POWER1,
 650                                             WM8960_VREF, WM8960_VREF);
 651
 652                         msleep(100);
 653                         break;
 654
 655                 case SND_SOC_BIAS_ON:
 656                         /* Enable anti-pop mode */
 657                         snd_soc_update_bits(codec, WM8960_APOP1,
 658                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 659                                             WM8960_BUFDCOPEN,
 660                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 661                                             WM8960_BUFDCOPEN);
 662
 663                         /* Disable VMID and VREF */
 664                         snd_soc_update_bits(codec, WM8960_POWER1,
 665                                             WM8960_VREF | WM8960_VMID_MASK, 0);
 666                         break;
 667
 668                 case SND_SOC_BIAS_OFF:
 669                         snd_soc_cache_sync(codec);
 670                         break;
 671                 default:
 672                         break;
 673                 }
 674                 break;
 675
 676         case SND_SOC_BIAS_STANDBY:
 677                 switch (codec->dapm.bias_level) {
 678                 case SND_SOC_BIAS_PREPARE:
 679                         /* Disable HP discharge */
 680                         snd_soc_update_bits(codec, WM8960_APOP2,
 681                                             WM8960_DISOP | WM8960_DRES_MASK,
 682                                             0);
 683
 684                         /* Disable anti-pop features */
 685                         snd_soc_update_bits(codec, WM8960_APOP1,
 686                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 687                                             WM8960_BUFDCOPEN,
 688                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 689                                             WM8960_BUFDCOPEN);
 690                         break;
 691
 692                 default:
 693                         break;
 694                 }
 695                 break;
 696
 697         case SND_SOC_BIAS_OFF:
 698                 break;
 699         }
 700
 701         codec->dapm.bias_level = level;
 702
 703         return 0;
 704 }
 705
 706 /* PLL divisors */
 707 struct _pll_div {
 708         u32 pre_div:1;
 709         u32 n:4;
 710         u32 k:24;
 711 };
 712
 713 /* The size in bits of the pll divide multiplied by 10
 714  * to allow rounding later */
 715 #define FIXED_PLL_SIZE ((1 << 24) * 10)
 716
 717 static int pll_factors(unsigned int source, unsigned int target,
 718                        struct _pll_div *pll_div)
 719 {
 720         unsigned long long Kpart;
 721         unsigned int K, Ndiv, Nmod;
 722
 723         pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
 724
 725         /* Scale up target to PLL operating frequency */
 726         target *= 4;
 727
 728         Ndiv = target / source;
 729         if (Ndiv < 6) {
 730                 source >>= 1;
 731                 pll_div->pre_div = 1;
 732                 Ndiv = target / source;
 733         } else
 734                 pll_div->pre_div = 0;
 735
 736         if ((Ndiv < 6) || (Ndiv > 12)) {
 737                 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
 738                 return -EINVAL;
 739         }
 740
 741         pll_div->n = Ndiv;
 742         Nmod = target % source;
 743         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 744
 745         do_div(Kpart, source);
 746
 747         K = Kpart & 0xFFFFFFFF;
 748
 749         /* Check if we need to round */
 750         if ((K % 10) >= 5)
 751                 K += 5;
 752
 753         /* Move down to proper range now rounding is done */
 754         K /= 10;
 755
 756         pll_div->k = K;
 757
 758         pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
 759                  pll_div->n, pll_div->k, pll_div->pre_div);
 760
 761         return 0;
 762 }
 763
 764 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
 765                 int source, unsigned int freq_in, unsigned int freq_out)
 766 {
 767         struct snd_soc_codec *codec = codec_dai->codec;
 768         u16 reg;
 769         static struct _pll_div pll_div;
 770         int ret;
 771
 772         if (freq_in && freq_out) {
 773                 ret = pll_factors(freq_in, freq_out, &pll_div);
 774                 if (ret != 0)
 775                         return ret;
 776         }
 777
 778         /* Disable the PLL: even if we are changing the frequency the
 779          * PLL needs to be disabled while we do so. */
 780         snd_soc_update_bits(codec, WM8960_CLOCK1, 0x1, 0);
 781         snd_soc_update_bits(codec, WM8960_POWER2, 0x1, 0);
 782
 783         if (!freq_in || !freq_out)
 784                 return 0;
 785
 786         reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f;
 787         reg |= pll_div.pre_div << 4;
 788         reg |= pll_div.n;
 789
 790         if (pll_div.k) {
 791                 reg |= 0x20;
 792
 793                 snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 18) & 0x3f);
 794                 snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 9) & 0x1ff);
 795                 snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0x1ff);
 796         }
 797         snd_soc_write(codec, WM8960_PLL1, reg);
 798
 799         /* Turn it on */
 800         snd_soc_update_bits(codec, WM8960_POWER2, 0x1, 0x1);
 801         msleep(250);
 802         snd_soc_update_bits(codec, WM8960_CLOCK1, 0x1, 0x1);
 803
 804         return 0;
 805 }
 806
 807 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 808                 int div_id, int div)
 809 {
 810         struct snd_soc_codec *codec = codec_dai->codec;
 811         u16 reg;
 812
 813         switch (div_id) {
 814         case WM8960_SYSCLKDIV:
 815                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9;
 816                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 817                 break;
 818         case WM8960_DACDIV:
 819                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7;
 820                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 821                 break;
 822         case WM8960_OPCLKDIV:
 823                 reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f;
 824                 snd_soc_write(codec, WM8960_PLL1, reg | div);
 825                 break;
 826         case WM8960_DCLKDIV:
 827                 reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f;
 828                 snd_soc_write(codec, WM8960_CLOCK2, reg | div);
 829                 break;
 830         case WM8960_TOCLKSEL:
 831                 reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd;
 832                 snd_soc_write(codec, WM8960_ADDCTL1, reg | div);
 833                 break;
 834         default:
 835                 return -EINVAL;
 836         }
 837
 838         return 0;
 839 }
 840
 841 static int wm8960_set_bias_level(struct snd_soc_codec *codec,
 842                                  enum snd_soc_bias_level level)
 843 {
 844         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 845
 846         return wm8960->set_bias_level(codec, level);
 847 }
 848
 849 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000
 850
 851 #define WM8960_FORMATS \
 852         (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 853         SNDRV_PCM_FMTBIT_S24_LE)
 854
 855 static const struct snd_soc_dai_ops wm8960_dai_ops = {
 856         .hw_params = wm8960_hw_params,
 857         .digital_mute = wm8960_mute,
 858         .set_fmt = wm8960_set_dai_fmt,
 859         .set_clkdiv = wm8960_set_dai_clkdiv,
 860         .set_pll = wm8960_set_dai_pll,
 861 };
 862
 863 static struct snd_soc_dai_driver wm8960_dai = {
 864         .name = "wm8960-hifi",
 865         .playback = {
 866                 .stream_name = "Playback",
 867                 .channels_min = 1,
 868                 .channels_max = 2,
 869                 .rates = WM8960_RATES,
 870                 .formats = WM8960_FORMATS,},
 871         .capture = {
 872                 .stream_name = "Capture",
 873                 .channels_min = 1,
 874                 .channels_max = 2,
 875                 .rates = WM8960_RATES,
 876                 .formats = WM8960_FORMATS,},
 877         .ops = &wm8960_dai_ops,
 878         .symmetric_rates = 1,
 879 };
 880
 881 static int wm8960_suspend(struct snd_soc_codec *codec)
 882 {
 883         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 884
 885         wm8960->set_bias_level(codec, SND_SOC_BIAS_OFF);
 886         return 0;
 887 }
 888
 889 static int wm8960_resume(struct snd_soc_codec *codec)
 890 {
 891         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 892
 893         wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 894         return 0;
 895 }
 896
 897 static int wm8960_probe(struct snd_soc_codec *codec)
 898 {
 899         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 900         struct wm8960_data *pdata = dev_get_platdata(codec->dev);
 901         int ret;
 902
 903         wm8960->set_bias_level = wm8960_set_bias_level_out3;
 904
 905         if (!pdata) {
 906                 dev_warn(codec->dev, "No platform data supplied\n");
 907         } else {
 908                 if (pdata->dres > WM8960_DRES_MAX) {
 909                         dev_err(codec->dev, "Invalid DRES: %d\n", pdata->dres);
 910                         pdata->dres = 0;
 911                 }
 912
 913                 if (pdata->capless)
 914                         wm8960->set_bias_level = wm8960_set_bias_level_capless;
 915         }
 916
 917         ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8960->control_type);
 918         if (ret < 0) {
 919                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 920                 return ret;
 921         }
 922
 923         ret = wm8960_reset(codec);
 924         if (ret < 0) {
 925                 dev_err(codec->dev, "Failed to issue reset\n");
 926                 return ret;
 927         }
 928
 929         wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 930
 931         /* Latch the update bits */
 932         snd_soc_update_bits(codec, WM8960_LINVOL, 0x100, 0x100);
 933         snd_soc_update_bits(codec, WM8960_RINVOL, 0x100, 0x100);
 934         snd_soc_update_bits(codec, WM8960_LADC, 0x100, 0x100);
 935         snd_soc_update_bits(codec, WM8960_RADC, 0x100, 0x100);
 936         snd_soc_update_bits(codec, WM8960_LDAC, 0x100, 0x100);
 937         snd_soc_update_bits(codec, WM8960_RDAC, 0x100, 0x100);
 938         snd_soc_update_bits(codec, WM8960_LOUT1, 0x100, 0x100);
 939         snd_soc_update_bits(codec, WM8960_ROUT1, 0x100, 0x100);
 940         snd_soc_update_bits(codec, WM8960_LOUT2, 0x100, 0x100);
 941         snd_soc_update_bits(codec, WM8960_ROUT2, 0x100, 0x100);
 942
 943         snd_soc_add_controls(codec, wm8960_snd_controls,
 944                                      ARRAY_SIZE(wm8960_snd_controls));
 945         wm8960_add_widgets(codec);
 946
 947         return 0;
 948 }
 949
 950 /* power down chip */
 951 static int wm8960_remove(struct snd_soc_codec *codec)
 952 {
 953         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 954
 955         wm8960->set_bias_level(codec, SND_SOC_BIAS_OFF);
 956         return 0;
 957 }
 958
 959 static struct snd_soc_codec_driver soc_codec_dev_wm8960 = {
 960         .probe =        wm8960_probe,
 961         .remove =       wm8960_remove,
 962         .suspend =      wm8960_suspend,
 963         .resume =       wm8960_resume,
 964         .set_bias_level = wm8960_set_bias_level,
 965         .reg_cache_size = ARRAY_SIZE(wm8960_reg),
 966         .reg_word_size = sizeof(u16),
 967         .reg_cache_default = wm8960_reg,
 968 };
 969
 970 static __devinit int wm8960_i2c_probe(struct i2c_client *i2c,
 971                                       const struct i2c_device_id *id)
 972 {
 973         struct wm8960_priv *wm8960;
 974         int ret;
 975
 976         wm8960 = devm_kzalloc(&i2c->dev, sizeof(struct wm8960_priv),
 977                               GFP_KERNEL);
 978         if (wm8960 == NULL)
 979                 return -ENOMEM;
 980
 981         i2c_set_clientdata(i2c, wm8960);
 982         wm8960->control_type = SND_SOC_I2C;
 983
 984         ret = snd_soc_register_codec(&i2c->dev,
 985                         &soc_codec_dev_wm8960, &wm8960_dai, 1);
 986
 987         return ret;
 988 }
 989
 990 static __devexit int wm8960_i2c_remove(struct i2c_client *client)
 991 {
 992         snd_soc_unregister_codec(&client->dev);
 993         return 0;
 994 }
 995
 996 static const struct i2c_device_id wm8960_i2c_id[] = {
 997         { "wm8960", 0 },
 998         { }
 999 };
1000 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
1001
1002 static struct i2c_driver wm8960_i2c_driver = {
1003         .driver = {
1004                 .name = "wm8960",
1005                 .owner = THIS_MODULE,
1006         },
1007         .probe =    wm8960_i2c_probe,
1008         .remove =   __devexit_p(wm8960_i2c_remove),
1009         .id_table = wm8960_i2c_id,
1010 };
1011
1012 static int __init wm8960_modinit(void)
1013 {
1014         int ret = 0;
1015         ret = i2c_add_driver(&wm8960_i2c_driver);
1016         if (ret != 0) {
1017                 printk(KERN_ERR "Failed to register WM8960 I2C driver: %d\n",
1018                        ret);
1019         }
1020         return ret;
1021 }
1022 module_init(wm8960_modinit);
1023
1024 static void __exit wm8960_exit(void)
1025 {
1026         i2c_del_driver(&wm8960_i2c_driver);
1027 }
1028 module_exit(wm8960_exit);
1029
1030 MODULE_DESCRIPTION("ASoC WM8960 driver");
1031 MODULE_AUTHOR("Liam Girdwood");
1032 MODULE_LICENSE("GPL");