sound/pci/ice1712/wm8776.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *   ALSA driver for ICEnsemble VT17xx
   4  *
   5  *   Lowlevel functions for WM8776 codec
   6  *
   7  *      Copyright (c) 2012 Ondrej Zary <linux@rainbow-software.org>
   8  */
   9
  10 #include <linux/delay.h>
  11 #include <sound/core.h>
  12 #include <sound/control.h>
  13 #include <sound/tlv.h>
  14 #include "wm8776.h"
  15
  16 /* low-level access */
  17
  18 static void snd_wm8776_write(struct snd_wm8776 *wm, u16 addr, u16 data)
  19 {
  20         u8 bus_addr = addr << 1 | data >> 8;    /* addr + 9th data bit */
  21         u8 bus_data = data & 0xff;              /* remaining 8 data bits */
  22
  23         if (addr < WM8776_REG_RESET)
  24                 wm->regs[addr] = data;
  25         wm->ops.write(wm, bus_addr, bus_data);
  26 }
  27
  28 /* register-level functions */
  29
  30 static void snd_wm8776_activate_ctl(struct snd_wm8776 *wm,
  31                                     const char *ctl_name,
  32                                     bool active)
  33 {
  34         struct snd_card *card = wm->card;
  35         struct snd_kcontrol *kctl;
  36         struct snd_kcontrol_volatile *vd;
  37         struct snd_ctl_elem_id elem_id;
  38         unsigned int index_offset;
  39
  40         memset(&elem_id, 0, sizeof(elem_id));
  41         strlcpy(elem_id.name, ctl_name, sizeof(elem_id.name));
  42         elem_id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
  43         kctl = snd_ctl_find_id(card, &elem_id);
  44         if (!kctl)
  45                 return;
  46         index_offset = snd_ctl_get_ioff(kctl, &kctl->id);
  47         vd = &kctl->vd[index_offset];
  48         if (active)
  49                 vd->access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
  50         else
  51                 vd->access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
  52         snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_INFO, &kctl->id);
  53 }
  54
  55 static void snd_wm8776_update_agc_ctl(struct snd_wm8776 *wm)
  56 {
  57         int i, flags_on = 0, flags_off = 0;
  58
  59         switch (wm->agc_mode) {
  60         case WM8776_AGC_OFF:
  61                 flags_off = WM8776_FLAG_LIM | WM8776_FLAG_ALC;
  62                 break;
  63         case WM8776_AGC_LIM:
  64                 flags_off = WM8776_FLAG_ALC;
  65                 flags_on = WM8776_FLAG_LIM;
  66                 break;
  67         case WM8776_AGC_ALC_R:
  68         case WM8776_AGC_ALC_L:
  69         case WM8776_AGC_ALC_STEREO:
  70                 flags_off = WM8776_FLAG_LIM;
  71                 flags_on = WM8776_FLAG_ALC;
  72                 break;
  73         }
  74
  75         for (i = 0; i < WM8776_CTL_COUNT; i++)
  76                 if (wm->ctl[i].flags & flags_off)
  77                         snd_wm8776_activate_ctl(wm, wm->ctl[i].name, false);
  78                 else if (wm->ctl[i].flags & flags_on)
  79                         snd_wm8776_activate_ctl(wm, wm->ctl[i].name, true);
  80 }
  81
  82 static void snd_wm8776_set_agc(struct snd_wm8776 *wm, u16 agc, u16 nothing)
  83 {
  84         u16 alc1 = wm->regs[WM8776_REG_ALCCTRL1] & ~WM8776_ALC1_LCT_MASK;
  85         u16 alc2 = wm->regs[WM8776_REG_ALCCTRL2] & ~WM8776_ALC2_LCEN;
  86
  87         switch (agc) {
  88         case 0: /* Off */
  89                 wm->agc_mode = WM8776_AGC_OFF;
  90                 break;
  91         case 1: /* Limiter */
  92                 alc2 |= WM8776_ALC2_LCEN;
  93                 wm->agc_mode = WM8776_AGC_LIM;
  94                 break;
  95         case 2: /* ALC Right */
  96                 alc1 |= WM8776_ALC1_LCSEL_ALCR;
  97                 alc2 |= WM8776_ALC2_LCEN;
  98                 wm->agc_mode = WM8776_AGC_ALC_R;
  99                 break;
 100         case 3: /* ALC Left */
 101                 alc1 |= WM8776_ALC1_LCSEL_ALCL;
 102                 alc2 |= WM8776_ALC2_LCEN;
 103                 wm->agc_mode = WM8776_AGC_ALC_L;
 104                 break;
 105         case 4: /* ALC Stereo */
 106                 alc1 |= WM8776_ALC1_LCSEL_ALCSTEREO;
 107                 alc2 |= WM8776_ALC2_LCEN;
 108                 wm->agc_mode = WM8776_AGC_ALC_STEREO;
 109                 break;
 110         }
 111         snd_wm8776_write(wm, WM8776_REG_ALCCTRL1, alc1);
 112         snd_wm8776_write(wm, WM8776_REG_ALCCTRL2, alc2);
 113         snd_wm8776_update_agc_ctl(wm);
 114 }
 115
 116 static void snd_wm8776_get_agc(struct snd_wm8776 *wm, u16 *mode, u16 *nothing)
 117 {
 118         *mode = wm->agc_mode;
 119 }
 120
 121 /* mixer controls */
 122
 123 static const DECLARE_TLV_DB_SCALE(wm8776_hp_tlv, -7400, 100, 1);
 124 static const DECLARE_TLV_DB_SCALE(wm8776_dac_tlv, -12750, 50, 1);
 125 static const DECLARE_TLV_DB_SCALE(wm8776_adc_tlv, -10350, 50, 1);
 126 static const DECLARE_TLV_DB_SCALE(wm8776_lct_tlv, -1600, 100, 0);
 127 static const DECLARE_TLV_DB_SCALE(wm8776_maxgain_tlv, 0, 400, 0);
 128 static const DECLARE_TLV_DB_SCALE(wm8776_ngth_tlv, -7800, 600, 0);
 129 static const DECLARE_TLV_DB_SCALE(wm8776_maxatten_lim_tlv, -1200, 100, 0);
 130 static const DECLARE_TLV_DB_SCALE(wm8776_maxatten_alc_tlv, -2100, 400, 0);
 131
 132 static const struct snd_wm8776_ctl snd_wm8776_default_ctl[WM8776_CTL_COUNT] = {
 133         [WM8776_CTL_DAC_VOL] = {
 134                 .name = "Master Playback Volume",
 135                 .type = SNDRV_CTL_ELEM_TYPE_INTEGER,
 136                 .tlv = wm8776_dac_tlv,
 137                 .reg1 = WM8776_REG_DACLVOL,
 138                 .reg2 = WM8776_REG_DACRVOL,
 139                 .mask1 = WM8776_DACVOL_MASK,
 140                 .mask2 = WM8776_DACVOL_MASK,
 141                 .max = 0xff,
 142                 .flags = WM8776_FLAG_STEREO | WM8776_FLAG_VOL_UPDATE,
 143         },
 144         [WM8776_CTL_DAC_SW] = {
 145                 .name = "Master Playback Switch",
 146                 .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
 147                 .reg1 = WM8776_REG_DACCTRL1,
 148                 .reg2 = WM8776_REG_DACCTRL1,
 149                 .mask1 = WM8776_DAC_PL_LL,
 150                 .mask2 = WM8776_DAC_PL_RR,
 151                 .flags = WM8776_FLAG_STEREO,
 152         },
 153         [WM8776_CTL_DAC_ZC_SW] = {
 154                 .name = "Master Zero Cross Detect Playback Switch",
 155                 .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
 156                 .reg1 = WM8776_REG_DACCTRL1,
 157                 .mask1 = WM8776_DAC_DZCEN,
 158         },
 159         [WM8776_CTL_HP_VOL] = {
 160                 .name = "Headphone Playback Volume",
 161                 .type = SNDRV_CTL_ELEM_TYPE_INTEGER,
 162                 .tlv = wm8776_hp_tlv,
 163                 .reg1 = WM8776_REG_HPLVOL,
 164                 .reg2 = WM8776_REG_HPRVOL,
 165                 .mask1 = WM8776_HPVOL_MASK,
 166                 .mask2 = WM8776_HPVOL_MASK,
 167                 .min = 0x2f,
 168                 .max = 0x7f,
 169                 .flags = WM8776_FLAG_STEREO | WM8776_FLAG_VOL_UPDATE,
 170         },
 171         [WM8776_CTL_HP_SW] = {
 172                 .name = "Headphone Playback Switch",
 173                 .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
 174                 .reg1 = WM8776_REG_PWRDOWN,
 175                 .mask1 = WM8776_PWR_HPPD,
 176                 .flags = WM8776_FLAG_INVERT,
 177         },
 178         [WM8776_CTL_HP_ZC_SW] = {
 179                 .name = "Headphone Zero Cross Detect Playback Switch",
 180                 .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
 181                 .reg1 = WM8776_REG_HPLVOL,
 182                 .reg2 = WM8776_REG_HPRVOL,
 183                 .mask1 = WM8776_VOL_HPZCEN,
 184                 .mask2 = WM8776_VOL_HPZCEN,
 185                 .flags = WM8776_FLAG_STEREO,
 186         },
 187         [WM8776_CTL_AUX_SW] = {
 188                 .name = "AUX Playback Switch",
 189                 .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
 190                 .reg1 = WM8776_REG_OUTMUX,
 191                 .mask1 = WM8776_OUTMUX_AUX,
 192         },
 193         [WM8776_CTL_BYPASS_SW] = {
 194                 .name = "Bypass Playback Switch",
 195                 .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
 196                 .reg1 = WM8776_REG_OUTMUX,
 197                 .mask1 = WM8776_OUTMUX_BYPASS,
 198         },
 199         [WM8776_CTL_DAC_IZD_SW] = {
 200                 .name = "Infinite Zero Detect Playback Switch",
 201                 .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
 202                 .reg1 = WM8776_REG_DACCTRL1,
 203                 .mask1 = WM8776_DAC_IZD,
 204         },
 205         [WM8776_CTL_PHASE_SW] = {
 206                 .name = "Phase Invert Playback Switch",
 207                 .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
 208                 .reg1 = WM8776_REG_PHASESWAP,
 209                 .reg2 = WM8776_REG_PHASESWAP,
 210                 .mask1 = WM8776_PHASE_INVERTL,
 211                 .mask2 = WM8776_PHASE_INVERTR,
 212                 .flags = WM8776_FLAG_STEREO,
 213         },
 214         [WM8776_CTL_DEEMPH_SW] = {
 215                 .name = "Deemphasis Playback Switch",
 216                 .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
 217                 .reg1 = WM8776_REG_DACCTRL2,
 218                 .mask1 = WM8776_DAC2_DEEMPH,
 219         },
 220         [WM8776_CTL_ADC_VOL] = {
 221                 .name = "Input Capture Volume",
 222                 .type = SNDRV_CTL_ELEM_TYPE_INTEGER,
 223                 .tlv = wm8776_adc_tlv,
 224                 .reg1 = WM8776_REG_ADCLVOL,
 225                 .reg2 = WM8776_REG_ADCRVOL,
 226                 .mask1 = WM8776_ADC_GAIN_MASK,
 227                 .mask2 = WM8776_ADC_GAIN_MASK,
 228                 .max = 0xff,
 229                 .flags = WM8776_FLAG_STEREO | WM8776_FLAG_VOL_UPDATE,
 230         },
 231         [WM8776_CTL_ADC_SW] = {
 232                 .name = "Input Capture Switch",
 233                 .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
 234                 .reg1 = WM8776_REG_ADCMUX,
 235                 .reg2 = WM8776_REG_ADCMUX,
 236                 .mask1 = WM8776_ADC_MUTEL,
 237                 .mask2 = WM8776_ADC_MUTER,
 238                 .flags = WM8776_FLAG_STEREO | WM8776_FLAG_INVERT,
 239         },
 240         [WM8776_CTL_INPUT1_SW] = {
 241                 .name = "AIN1 Capture Switch",
 242                 .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
 243                 .reg1 = WM8776_REG_ADCMUX,
 244                 .mask1 = WM8776_ADC_MUX_AIN1,
 245         },
 246         [WM8776_CTL_INPUT2_SW] = {
 247                 .name = "AIN2 Capture Switch",
 248                 .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
 249                 .reg1 = WM8776_REG_ADCMUX,
 250                 .mask1 = WM8776_ADC_MUX_AIN2,
 251         },
 252         [WM8776_CTL_INPUT3_SW] = {
 253                 .name = "AIN3 Capture Switch",
 254                 .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
 255                 .reg1 = WM8776_REG_ADCMUX,
 256                 .mask1 = WM8776_ADC_MUX_AIN3,
 257         },
 258         [WM8776_CTL_INPUT4_SW] = {
 259                 .name = "AIN4 Capture Switch",
 260                 .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
 261                 .reg1 = WM8776_REG_ADCMUX,
 262                 .mask1 = WM8776_ADC_MUX_AIN4,
 263         },
 264         [WM8776_CTL_INPUT5_SW] = {
 265                 .name = "AIN5 Capture Switch",
 266                 .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
 267                 .reg1 = WM8776_REG_ADCMUX,
 268                 .mask1 = WM8776_ADC_MUX_AIN5,
 269         },
 270         [WM8776_CTL_AGC_SEL] = {
 271                 .name = "AGC Select Capture Enum",
 272                 .type = SNDRV_CTL_ELEM_TYPE_ENUMERATED,
 273                 .enum_names = { "Off", "Limiter", "ALC Right", "ALC Left",
 274                                 "ALC Stereo" },
 275                 .max = 5,       /* .enum_names item count */
 276                 .set = snd_wm8776_set_agc,
 277                 .get = snd_wm8776_get_agc,
 278         },
 279         [WM8776_CTL_LIM_THR] = {
 280                 .name = "Limiter Threshold Capture Volume",
 281                 .type = SNDRV_CTL_ELEM_TYPE_INTEGER,
 282                 .tlv = wm8776_lct_tlv,
 283                 .reg1 = WM8776_REG_ALCCTRL1,
 284                 .mask1 = WM8776_ALC1_LCT_MASK,
 285                 .max = 15,
 286                 .flags = WM8776_FLAG_LIM,
 287         },
 288         [WM8776_CTL_LIM_ATK] = {
 289                 .name = "Limiter Attack Time Capture Enum",
 290                 .type = SNDRV_CTL_ELEM_TYPE_ENUMERATED,
 291                 .enum_names = { "0.25 ms", "0.5 ms", "1 ms", "2 ms", "4 ms",
 292                         "8 ms", "16 ms", "32 ms", "64 ms", "128 ms", "256 ms" },
 293                 .max = 11,      /* .enum_names item count */
 294                 .reg1 = WM8776_REG_ALCCTRL3,
 295                 .mask1 = WM8776_ALC3_ATK_MASK,
 296                 .flags = WM8776_FLAG_LIM,
 297         },
 298         [WM8776_CTL_LIM_DCY] = {
 299                 .name = "Limiter Decay Time Capture Enum",
 300                 .type = SNDRV_CTL_ELEM_TYPE_ENUMERATED,
 301                 .enum_names = { "1.2 ms", "2.4 ms", "4.8 ms", "9.6 ms",
 302                         "19.2 ms", "38.4 ms", "76.8 ms", "154 ms", "307 ms",
 303                         "614 ms", "1.23 s" },
 304                 .max = 11,      /* .enum_names item count */
 305                 .reg1 = WM8776_REG_ALCCTRL3,
 306                 .mask1 = WM8776_ALC3_DCY_MASK,
 307                 .flags = WM8776_FLAG_LIM,
 308         },
 309         [WM8776_CTL_LIM_TRANWIN] = {
 310                 .name = "Limiter Transient Window Capture Enum",
 311                 .type = SNDRV_CTL_ELEM_TYPE_ENUMERATED,
 312                 .enum_names = { "0 us", "62.5 us", "125 us", "250 us", "500 us",
 313                         "1 ms", "2 ms", "4 ms" },
 314                 .max = 8,       /* .enum_names item count */
 315                 .reg1 = WM8776_REG_LIMITER,
 316                 .mask1 = WM8776_LIM_TRANWIN_MASK,
 317                 .flags = WM8776_FLAG_LIM,
 318         },
 319         [WM8776_CTL_LIM_MAXATTN] = {
 320                 .name = "Limiter Maximum Attenuation Capture Volume",
 321                 .type = SNDRV_CTL_ELEM_TYPE_INTEGER,
 322                 .tlv = wm8776_maxatten_lim_tlv,
 323                 .reg1 = WM8776_REG_LIMITER,
 324                 .mask1 = WM8776_LIM_MAXATTEN_MASK,
 325                 .min = 3,
 326                 .max = 12,
 327                 .flags = WM8776_FLAG_LIM | WM8776_FLAG_INVERT,
 328         },
 329         [WM8776_CTL_ALC_TGT] = {
 330                 .name = "ALC Target Level Capture Volume",
 331                 .type = SNDRV_CTL_ELEM_TYPE_INTEGER,
 332                 .tlv = wm8776_lct_tlv,
 333                 .reg1 = WM8776_REG_ALCCTRL1,
 334                 .mask1 = WM8776_ALC1_LCT_MASK,
 335                 .max = 15,
 336                 .flags = WM8776_FLAG_ALC,
 337         },
 338         [WM8776_CTL_ALC_ATK] = {
 339                 .name = "ALC Attack Time Capture Enum",
 340                 .type = SNDRV_CTL_ELEM_TYPE_ENUMERATED,
 341                 .enum_names = { "8.40 ms", "16.8 ms", "33.6 ms", "67.2 ms",
 342                         "134 ms", "269 ms", "538 ms", "1.08 s", "2.15 s",
 343                         "4.3 s", "8.6 s" },
 344                 .max = 11,      /* .enum_names item count */
 345                 .reg1 = WM8776_REG_ALCCTRL3,
 346                 .mask1 = WM8776_ALC3_ATK_MASK,
 347                 .flags = WM8776_FLAG_ALC,
 348         },
 349         [WM8776_CTL_ALC_DCY] = {
 350                 .name = "ALC Decay Time Capture Enum",
 351                 .type = SNDRV_CTL_ELEM_TYPE_ENUMERATED,
 352                 .enum_names = { "33.5 ms", "67.0 ms", "134 ms", "268 ms",
 353                         "536 ms", "1.07 s", "2.14 s", "4.29 s", "8.58 s",
 354                         "17.2 s", "34.3 s" },
 355                 .max = 11,      /* .enum_names item count */
 356                 .reg1 = WM8776_REG_ALCCTRL3,
 357                 .mask1 = WM8776_ALC3_DCY_MASK,
 358                 .flags = WM8776_FLAG_ALC,
 359         },
 360         [WM8776_CTL_ALC_MAXGAIN] = {
 361                 .name = "ALC Maximum Gain Capture Volume",
 362                 .type = SNDRV_CTL_ELEM_TYPE_INTEGER,
 363                 .tlv = wm8776_maxgain_tlv,
 364                 .reg1 = WM8776_REG_ALCCTRL1,
 365                 .mask1 = WM8776_ALC1_MAXGAIN_MASK,
 366                 .min = 1,
 367                 .max = 7,
 368                 .flags = WM8776_FLAG_ALC,
 369         },
 370         [WM8776_CTL_ALC_MAXATTN] = {
 371                 .name = "ALC Maximum Attenuation Capture Volume",
 372                 .type = SNDRV_CTL_ELEM_TYPE_INTEGER,
 373                 .tlv = wm8776_maxatten_alc_tlv,
 374                 .reg1 = WM8776_REG_LIMITER,
 375                 .mask1 = WM8776_LIM_MAXATTEN_MASK,
 376                 .min = 10,
 377                 .max = 15,
 378                 .flags = WM8776_FLAG_ALC | WM8776_FLAG_INVERT,
 379         },
 380         [WM8776_CTL_ALC_HLD] = {
 381                 .name = "ALC Hold Time Capture Enum",
 382                 .type = SNDRV_CTL_ELEM_TYPE_ENUMERATED,
 383                 .enum_names = { "0 ms", "2.67 ms", "5.33 ms", "10.6 ms",
 384                         "21.3 ms", "42.7 ms", "85.3 ms", "171 ms", "341 ms",
 385                         "683 ms", "1.37 s", "2.73 s", "5.46 s", "10.9 s",
 386                         "21.8 s", "43.7 s" },
 387                 .max = 16,      /* .enum_names item count */
 388                 .reg1 = WM8776_REG_ALCCTRL2,
 389                 .mask1 = WM8776_ALC2_HOLD_MASK,
 390                 .flags = WM8776_FLAG_ALC,
 391         },
 392         [WM8776_CTL_NGT_SW] = {
 393                 .name = "Noise Gate Capture Switch",
 394                 .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
 395                 .reg1 = WM8776_REG_NOISEGATE,
 396                 .mask1 = WM8776_NGAT_ENABLE,
 397                 .flags = WM8776_FLAG_ALC,
 398         },
 399         [WM8776_CTL_NGT_THR] = {
 400                 .name = "Noise Gate Threshold Capture Volume",
 401                 .type = SNDRV_CTL_ELEM_TYPE_INTEGER,
 402                 .tlv = wm8776_ngth_tlv,
 403                 .reg1 = WM8776_REG_NOISEGATE,
 404                 .mask1 = WM8776_NGAT_THR_MASK,
 405                 .max = 7,
 406                 .flags = WM8776_FLAG_ALC,
 407         },
 408 };
 409
 410 /* exported functions */
 411
 412 void snd_wm8776_init(struct snd_wm8776 *wm)
 413 {
 414         int i;
 415         static const u16 default_values[] = {
 416                 0x000, 0x100, 0x000,
 417                 0x000, 0x100, 0x000,
 418                 0x000, 0x090, 0x000, 0x000,
 419                 0x022, 0x022, 0x022,
 420                 0x008, 0x0cf, 0x0cf, 0x07b, 0x000,
 421                 0x032, 0x000, 0x0a6, 0x001, 0x001
 422         };
 423
 424         memcpy(wm->ctl, snd_wm8776_default_ctl, sizeof(wm->ctl));
 425
 426         snd_wm8776_write(wm, WM8776_REG_RESET, 0x00); /* reset */
 427         udelay(10);
 428         /* load defaults */
 429         for (i = 0; i < ARRAY_SIZE(default_values); i++)
 430                 snd_wm8776_write(wm, i, default_values[i]);
 431 }
 432
 433 void snd_wm8776_resume(struct snd_wm8776 *wm)
 434 {
 435         int i;
 436
 437         for (i = 0; i < WM8776_REG_COUNT; i++)
 438                 snd_wm8776_write(wm, i, wm->regs[i]);
 439 }
 440
 441 void snd_wm8776_set_power(struct snd_wm8776 *wm, u16 power)
 442 {
 443         snd_wm8776_write(wm, WM8776_REG_PWRDOWN, power);
 444 }
 445
 446 void snd_wm8776_volume_restore(struct snd_wm8776 *wm)
 447 {
 448         u16 val = wm->regs[WM8776_REG_DACRVOL];
 449         /* restore volume after MCLK stopped */
 450         snd_wm8776_write(wm, WM8776_REG_DACRVOL, val | WM8776_VOL_UPDATE);
 451 }
 452
 453 /* mixer callbacks */
 454
 455 static int snd_wm8776_volume_info(struct snd_kcontrol *kcontrol,
 456                                    struct snd_ctl_elem_info *uinfo)
 457 {
 458         struct snd_wm8776 *wm = snd_kcontrol_chip(kcontrol);
 459         int n = kcontrol->private_value;
 460
 461         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 462         uinfo->count = (wm->ctl[n].flags & WM8776_FLAG_STEREO) ? 2 : 1;
 463         uinfo->value.integer.min = wm->ctl[n].min;
 464         uinfo->value.integer.max = wm->ctl[n].max;
 465
 466         return 0;
 467 }
 468
 469 static int snd_wm8776_enum_info(struct snd_kcontrol *kcontrol,
 470                                       struct snd_ctl_elem_info *uinfo)
 471 {
 472         struct snd_wm8776 *wm = snd_kcontrol_chip(kcontrol);
 473         int n = kcontrol->private_value;
 474
 475         return snd_ctl_enum_info(uinfo, 1, wm->ctl[n].max,
 476                                                 wm->ctl[n].enum_names);
 477 }
 478
 479 static int snd_wm8776_ctl_get(struct snd_kcontrol *kcontrol,
 480                                   struct snd_ctl_elem_value *ucontrol)
 481 {
 482         struct snd_wm8776 *wm = snd_kcontrol_chip(kcontrol);
 483         int n = kcontrol->private_value;
 484         u16 val1, val2;
 485
 486         if (wm->ctl[n].get)
 487                 wm->ctl[n].get(wm, &val1, &val2);
 488         else {
 489                 val1 = wm->regs[wm->ctl[n].reg1] & wm->ctl[n].mask1;
 490                 val1 >>= __ffs(wm->ctl[n].mask1);
 491                 if (wm->ctl[n].flags & WM8776_FLAG_STEREO) {
 492                         val2 = wm->regs[wm->ctl[n].reg2] & wm->ctl[n].mask2;
 493                         val2 >>= __ffs(wm->ctl[n].mask2);
 494                         if (wm->ctl[n].flags & WM8776_FLAG_VOL_UPDATE)
 495                                 val2 &= ~WM8776_VOL_UPDATE;
 496                 }
 497         }
 498         if (wm->ctl[n].flags & WM8776_FLAG_INVERT) {
 499                 val1 = wm->ctl[n].max - (val1 - wm->ctl[n].min);
 500                 if (wm->ctl[n].flags & WM8776_FLAG_STEREO)
 501                         val2 = wm->ctl[n].max - (val2 - wm->ctl[n].min);
 502         }
 503         ucontrol->value.integer.value[0] = val1;
 504         if (wm->ctl[n].flags & WM8776_FLAG_STEREO)
 505                 ucontrol->value.integer.value[1] = val2;
 506
 507         return 0;
 508 }
 509
 510 static int snd_wm8776_ctl_put(struct snd_kcontrol *kcontrol,
 511                                   struct snd_ctl_elem_value *ucontrol)
 512 {
 513         struct snd_wm8776 *wm = snd_kcontrol_chip(kcontrol);
 514         int n = kcontrol->private_value;
 515         u16 val, regval1, regval2;
 516
 517         /* this also works for enum because value is a union */
 518         regval1 = ucontrol->value.integer.value[0];
 519         regval2 = ucontrol->value.integer.value[1];
 520         if (wm->ctl[n].flags & WM8776_FLAG_INVERT) {
 521                 regval1 = wm->ctl[n].max - (regval1 - wm->ctl[n].min);
 522                 regval2 = wm->ctl[n].max - (regval2 - wm->ctl[n].min);
 523         }
 524         if (wm->ctl[n].set)
 525                 wm->ctl[n].set(wm, regval1, regval2);
 526         else {
 527                 val = wm->regs[wm->ctl[n].reg1] & ~wm->ctl[n].mask1;
 528                 val |= regval1 << __ffs(wm->ctl[n].mask1);
 529                 /* both stereo controls in one register */
 530                 if (wm->ctl[n].flags & WM8776_FLAG_STEREO &&
 531                                 wm->ctl[n].reg1 == wm->ctl[n].reg2) {
 532                         val &= ~wm->ctl[n].mask2;
 533                         val |= regval2 << __ffs(wm->ctl[n].mask2);
 534                 }
 535                 snd_wm8776_write(wm, wm->ctl[n].reg1, val);
 536                 /* stereo controls in different registers */
 537                 if (wm->ctl[n].flags & WM8776_FLAG_STEREO &&
 538                                 wm->ctl[n].reg1 != wm->ctl[n].reg2) {
 539                         val = wm->regs[wm->ctl[n].reg2] & ~wm->ctl[n].mask2;
 540                         val |= regval2 << __ffs(wm->ctl[n].mask2);
 541                         if (wm->ctl[n].flags & WM8776_FLAG_VOL_UPDATE)
 542                                 val |= WM8776_VOL_UPDATE;
 543                         snd_wm8776_write(wm, wm->ctl[n].reg2, val);
 544                 }
 545         }
 546
 547         return 0;
 548 }
 549
 550 static int snd_wm8776_add_control(struct snd_wm8776 *wm, int num)
 551 {
 552         struct snd_kcontrol_new cont;
 553         struct snd_kcontrol *ctl;
 554
 555         memset(&cont, 0, sizeof(cont));
 556         cont.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 557         cont.private_value = num;
 558         cont.name = wm->ctl[num].name;
 559         cont.access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
 560         if (wm->ctl[num].flags & WM8776_FLAG_LIM ||
 561             wm->ctl[num].flags & WM8776_FLAG_ALC)
 562                 cont.access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
 563         cont.tlv.p = NULL;
 564         cont.get = snd_wm8776_ctl_get;
 565         cont.put = snd_wm8776_ctl_put;
 566
 567         switch (wm->ctl[num].type) {
 568         case SNDRV_CTL_ELEM_TYPE_INTEGER:
 569                 cont.info = snd_wm8776_volume_info;
 570                 cont.access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
 571                 cont.tlv.p = wm->ctl[num].tlv;
 572                 break;
 573         case SNDRV_CTL_ELEM_TYPE_BOOLEAN:
 574                 wm->ctl[num].max = 1;
 575                 if (wm->ctl[num].flags & WM8776_FLAG_STEREO)
 576                         cont.info = snd_ctl_boolean_stereo_info;
 577                 else
 578                         cont.info = snd_ctl_boolean_mono_info;
 579                 break;
 580         case SNDRV_CTL_ELEM_TYPE_ENUMERATED:
 581                 cont.info = snd_wm8776_enum_info;
 582                 break;
 583         default:
 584                 return -EINVAL;
 585         }
 586         ctl = snd_ctl_new1(&cont, wm);
 587         if (!ctl)
 588                 return -ENOMEM;
 589
 590         return snd_ctl_add(wm->card, ctl);
 591 }
 592
 593 int snd_wm8776_build_controls(struct snd_wm8776 *wm)
 594 {
 595         int err, i;
 596
 597         for (i = 0; i < WM8776_CTL_COUNT; i++)
 598                 if (wm->ctl[i].name) {
 599                         err = snd_wm8776_add_control(wm, i);
 600                         if (err < 0)
 601                                 return err;
 602                 }
 603
 604         return 0;
 605 }