git.oblomov.eu Git - linux-2.6/blob - sound/pci/ice1712/prodigy192.c

   1 /*
   2  *   ALSA driver for ICEnsemble VT1724 (Envy24HT)
   3  *
   4  *   Lowlevel functions for AudioTrak Prodigy 192 cards
   5  *   Supported IEC958 input from optional MI/ODI/O add-on card.
   6  *
   7  *   Specifics (SW, HW):
   8  *   -------------------
   9  *      * 49.5MHz crystal
  10  *      * SPDIF-OUT on the card:
  11  *        - coax (through isolation transformer)/toslink supplied by
  12  *          74HC04 gates - 3 in parallel
  13  *        - output switched between on-board CD drive dig-out connector
  14  *          and ice1724 SPDTX pin, using 74HC02 NOR gates, controlled
  15  *          by GPIO20 (0 = CD dig-out, 1 = SPDTX)
  16  *      * SPDTX goes straight to MI/ODI/O card's SPDIF-OUT coax
  17  *
  18  *      * MI/ODI/O card: AK4114 based, used for iec958 input only
  19  *              - toslink input -> RX0
  20  *              - coax input -> RX1
  21  *              - 4wire protocol:
  22  *                      AK4114          ICE1724
  23  *                      ------------------------------
  24  *                      CDTO (pin 32) -- GPIO11 pin 86
  25  *                      CDTI (pin 33) -- GPIO10 pin 77
  26  *                      CCLK (pin 34) -- GPIO9 pin 76
  27  *                      CSN  (pin 35) -- GPIO8 pin 75
  28  *              - output data Mode 7 (24bit, I2S, slave)
  29  *              - both MCKO1 and MCKO2 of ak4114 are fed to FPGA, which
  30  *                outputs master clock to SPMCLKIN of ice1724.
  31  *                Experimentally I found out that only a combination of
  32  *                OCKS0=1, OCKS1=1 (128fs, 64fs output) and ice1724 -
  33  *                VT1724_MT_I2S_MCLK_128X=0 (256fs input) yields correct
  34  *                sampling rate. That means the the FPGA doubles the
  35  *                MCK01 rate.
  36  *
  37  *      Copyright (c) 2003 Takashi Iwai <tiwai@suse.de>
  38  *      Copyright (c) 2003 Dimitromanolakis Apostolos <apostol@cs.utoronto.ca>
  39  *      Copyright (c) 2004 Kouichi ONO <co2b@ceres.dti.ne.jp>
  40  *
  41  *   This program is free software; you can redistribute it and/or modify
  42  *   it under the terms of the GNU General Public License as published by
  43  *   the Free Software Foundation; either version 2 of the License, or
  44  *   (at your option) any later version.
  45  *
  46  *   This program is distributed in the hope that it will be useful,
  47  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  48  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  49  *   GNU General Public License for more details.
  50  *
  51  *   You should have received a copy of the GNU General Public License
  52  *   along with this program; if not, write to the Free Software
  53  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  54  *
  55  */
  56
  57 #include <sound/driver.h>
  58 #include <asm/io.h>
  59 #include <linux/delay.h>
  60 #include <linux/interrupt.h>
  61 #include <linux/init.h>
  62 #include <linux/slab.h>
  63 #include <sound/core.h>
  64
  65 #include "ice1712.h"
  66 #include "envy24ht.h"
  67 #include "prodigy192.h"
  68 #include "stac946x.h"
  69 #include <sound/tlv.h>
  70
  71 static inline void stac9460_put(struct snd_ice1712 *ice, int reg, unsigned char val)
  72 {
  73         snd_vt1724_write_i2c(ice, PRODIGY192_STAC9460_ADDR, reg, val);
  74 }
  75
  76 static inline unsigned char stac9460_get(struct snd_ice1712 *ice, int reg)
  77 {
  78         return snd_vt1724_read_i2c(ice, PRODIGY192_STAC9460_ADDR, reg);
  79 }
  80
  81 /*
  82  * DAC mute control
  83  */
  84 static int stac9460_dac_mute_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
  85 {
  86         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
  87         uinfo->count = 1;
  88         uinfo->value.integer.min = 0;
  89         uinfo->value.integer.max = 1;
  90         return 0;
  91 }
  92
  93 static int stac9460_dac_mute_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  94 {
  95         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
  96         unsigned char val;
  97         int idx;
  98
  99         if (kcontrol->private_value)
 100                 idx = STAC946X_MASTER_VOLUME;
 101         else
 102                 idx  = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id) + STAC946X_LF_VOLUME;
 103         val = stac9460_get(ice, idx);
 104         ucontrol->value.integer.value[0] = (~val >> 7) & 0x1;
 105         return 0;
 106 }
 107
 108 static int stac9460_dac_mute_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 109 {
 110         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 111         unsigned char new, old;
 112         int idx;
 113         int change;
 114
 115         if (kcontrol->private_value)
 116                 idx = STAC946X_MASTER_VOLUME;
 117         else
 118                 idx  = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id) + STAC946X_LF_VOLUME;
 119         old = stac9460_get(ice, idx);
 120         new = (~ucontrol->value.integer.value[0]<< 7 & 0x80) | (old & ~0x80);
 121         change = (new != old);
 122         if (change)
 123                 stac9460_put(ice, idx, new);
 124
 125         return change;
 126 }
 127
 128 /*
 129  * DAC volume attenuation mixer control
 130  */
 131 static int stac9460_dac_vol_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 132 {
 133         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 134         uinfo->count = 1;
 135         uinfo->value.integer.min = 0;                   /* mute */
 136         uinfo->value.integer.max = 0x7f;                /* 0dB */
 137         return 0;
 138 }
 139
 140 static int stac9460_dac_vol_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 141 {
 142         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 143         int idx;
 144         unsigned char vol;
 145
 146         if (kcontrol->private_value)
 147                 idx = STAC946X_MASTER_VOLUME;
 148         else
 149                 idx  = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id) + STAC946X_LF_VOLUME;
 150         vol = stac9460_get(ice, idx) & 0x7f;
 151         ucontrol->value.integer.value[0] = 0x7f - vol;
 152
 153         return 0;
 154 }
 155
 156 static int stac9460_dac_vol_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 157 {
 158         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 159         int idx;
 160         unsigned char tmp, ovol, nvol;
 161         int change;
 162
 163         if (kcontrol->private_value)
 164                 idx = STAC946X_MASTER_VOLUME;
 165         else
 166                 idx  = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id) + STAC946X_LF_VOLUME;
 167         nvol = ucontrol->value.integer.value[0];
 168         tmp = stac9460_get(ice, idx);
 169         ovol = 0x7f - (tmp & 0x7f);
 170         change = (ovol != nvol);
 171         if (change) {
 172                 stac9460_put(ice, idx, (0x7f - nvol) | (tmp & 0x80));
 173         }
 174         return change;
 175 }
 176
 177 /*
 178  * ADC mute control
 179  */
 180 static int stac9460_adc_mute_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 181 {
 182         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
 183         uinfo->count = 2;
 184         uinfo->value.integer.min = 0;
 185         uinfo->value.integer.max = 1;
 186         return 0;
 187 }
 188
 189 static int stac9460_adc_mute_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 190 {
 191         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 192         unsigned char val;
 193         int i;
 194
 195         for (i = 0; i < 2; ++i) {
 196                 val = stac9460_get(ice, STAC946X_MIC_L_VOLUME + i);
 197                 ucontrol->value.integer.value[i] = ~val>>7 & 0x1;
 198         }
 199
 200         return 0;
 201 }
 202
 203 static int stac9460_adc_mute_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 204 {
 205         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 206         unsigned char new, old;
 207         int i, reg;
 208         int change;
 209
 210         for (i = 0; i < 2; ++i) {
 211                 reg = STAC946X_MIC_L_VOLUME + i;
 212                 old = stac9460_get(ice, reg);
 213                 new = (~ucontrol->value.integer.value[i]<<7&0x80) | (old&~0x80);
 214                 change = (new != old);
 215                 if (change)
 216                         stac9460_put(ice, reg, new);
 217         }
 218
 219         return change;
 220 }
 221
 222 /*
 223  * ADC gain mixer control
 224  */
 225 static int stac9460_adc_vol_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 226 {
 227         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 228         uinfo->count = 2;
 229         uinfo->value.integer.min = 0;           /* 0dB */
 230         uinfo->value.integer.max = 0x0f;        /* 22.5dB */
 231         return 0;
 232 }
 233
 234 static int stac9460_adc_vol_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 235 {
 236         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 237         int i, reg;
 238         unsigned char vol;
 239
 240         for (i = 0; i < 2; ++i) {
 241                 reg = STAC946X_MIC_L_VOLUME + i;
 242                 vol = stac9460_get(ice, reg) & 0x0f;
 243                 ucontrol->value.integer.value[i] = 0x0f - vol;
 244         }
 245
 246         return 0;
 247 }
 248
 249 static int stac9460_adc_vol_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 250 {
 251         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 252         int i, reg;
 253         unsigned char ovol, nvol;
 254         int change;
 255
 256         for (i = 0; i < 2; ++i) {
 257                 reg = STAC946X_MIC_L_VOLUME + i;
 258                 nvol = ucontrol->value.integer.value[i];
 259                 ovol = 0x0f - stac9460_get(ice, reg);
 260                 change = ((ovol & 0x0f)  != nvol);
 261                 if (change)
 262                         stac9460_put(ice, reg, (0x0f - nvol) | (ovol & ~0x0f));
 263         }
 264
 265         return change;
 266 }
 267
 268 #if 0
 269 /*
 270  * Headphone Amplifier
 271  */
 272 static int aureon_set_headphone_amp(struct snd_ice1712 *ice, int enable)
 273 {
 274         unsigned int tmp, tmp2;
 275
 276         tmp2 = tmp = snd_ice1712_gpio_read(ice);
 277         if (enable)
 278                 tmp |= AUREON_HP_SEL;
 279         else
 280                 tmp &= ~ AUREON_HP_SEL;
 281         if (tmp != tmp2) {
 282                 snd_ice1712_gpio_write(ice, tmp);
 283                 return 1;
 284         }
 285         return 0;
 286 }
 287
 288 static int aureon_get_headphone_amp(struct snd_ice1712 *ice)
 289 {
 290         unsigned int tmp = snd_ice1712_gpio_read(ice);
 291
 292         return ( tmp & AUREON_HP_SEL )!= 0;
 293 }
 294
 295 static int aureon_bool_info(struct snd_kcontrol *k, struct snd_ctl_elem_info *uinfo)
 296 {
 297         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
 298         uinfo->count = 1;
 299         uinfo->value.integer.min = 0;
 300         uinfo->value.integer.max = 1;
 301         return 0;
 302 }
 303
 304 static int aureon_hpamp_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 305 {
 306         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 307
 308         ucontrol->value.integer.value[0] = aureon_get_headphone_amp(ice);
 309         return 0;
 310 }
 311
 312
 313 static int aureon_hpamp_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 314 {
 315         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 316
 317         return aureon_set_headphone_amp(ice,ucontrol->value.integer.value[0]);
 318 }
 319
 320 /*
 321  * Deemphasis
 322  */
 323 static int aureon_deemp_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 324 {
 325         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 326         ucontrol->value.integer.value[0] = (wm_get(ice, WM_DAC_CTRL2) & 0xf) == 0xf;
 327         return 0;
 328 }
 329
 330 static int aureon_deemp_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 331 {
 332         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 333         int temp, temp2;
 334         temp2 = temp = wm_get(ice, WM_DAC_CTRL2);
 335         if (ucontrol->value.integer.value[0])
 336                 temp |= 0xf;
 337         else
 338                 temp &= ~0xf;
 339         if (temp != temp2) {
 340                 wm_put(ice, WM_DAC_CTRL2, temp);
 341                 return 1;
 342         }
 343         return 0;
 344 }
 345
 346 /*
 347  * ADC Oversampling
 348  */
 349 static int aureon_oversampling_info(struct snd_kcontrol *k, struct snd_ctl_elem_info *uinfo)
 350 {
 351         static char *texts[2] = { "128x", "64x" };
 352
 353         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 354         uinfo->count = 1;
 355         uinfo->value.enumerated.items = 2;
 356
 357         if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
 358                 uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
 359         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
 360
 361         return 0;
 362 }
 363
 364 static int aureon_oversampling_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 365 {
 366         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 367         ucontrol->value.enumerated.item[0] = (wm_get(ice, WM_MASTER) & 0x8) == 0x8;
 368         return 0;
 369 }
 370
 371 static int aureon_oversampling_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 372 {
 373         int temp, temp2;
 374         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 375
 376         temp2 = temp = wm_get(ice, WM_MASTER);
 377
 378         if (ucontrol->value.enumerated.item[0])
 379                 temp |= 0x8;
 380         else
 381                 temp &= ~0x8;
 382
 383         if (temp != temp2) {
 384                 wm_put(ice, WM_MASTER, temp);
 385                 return 1;
 386         }
 387         return 0;
 388 }
 389 #endif
 390 static int stac9460_mic_sw_info(struct snd_kcontrol *kcontrol,
 391                                 struct snd_ctl_elem_info *uinfo)
 392 {
 393         static char *texts[2] = { "Line In", "Mic" };
 394
 395         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 396         uinfo->count = 1;
 397         uinfo->value.enumerated.items = 2;
 398
 399         if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
 400                 uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
 401         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
 402
 403         return 0;
 404 }
 405
 406
 407 static int stac9460_mic_sw_get(struct snd_kcontrol *kcontrol,
 408                         struct snd_ctl_elem_value *ucontrol)
 409 {
 410         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 411         unsigned char val;
 412
 413         val = stac9460_get(ice, STAC946X_GENERAL_PURPOSE);
 414         ucontrol->value.enumerated.item[0] = (val >> 7) & 0x1;
 415         return 0;
 416 }
 417
 418 static int stac9460_mic_sw_put(struct snd_kcontrol *kcontrol,
 419                         struct snd_ctl_elem_value *ucontrol)
 420 {
 421         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 422         unsigned char new, old;
 423         int change;
 424         old = stac9460_get(ice, STAC946X_GENERAL_PURPOSE);
 425         new = (ucontrol->value.enumerated.item[0] << 7 & 0x80) | (old & ~0x80);
 426         change = (new != old);
 427         if (change)
 428                 stac9460_put(ice, STAC946X_GENERAL_PURPOSE, new);
 429         return change;
 430 }
 431
 432 static const DECLARE_TLV_DB_SCALE(db_scale_dac, -19125, 75, 0);
 433 static const DECLARE_TLV_DB_SCALE(db_scale_adc, 0, 150, 0);
 434
 435 /*
 436  * mixers
 437  */
 438
 439 static struct snd_kcontrol_new stac_controls[] __devinitdata = {
 440         {
 441                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 442                 .name = "Master Playback Switch",
 443                 .info = stac9460_dac_mute_info,
 444                 .get = stac9460_dac_mute_get,
 445                 .put = stac9460_dac_mute_put,
 446                 .private_value = 1,
 447                 .tlv = { .p = db_scale_dac }
 448         },
 449         {
 450                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 451                 .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
 452                            SNDRV_CTL_ELEM_ACCESS_TLV_READ),
 453                 .name = "Master Playback Volume",
 454                 .info = stac9460_dac_vol_info,
 455                 .get = stac9460_dac_vol_get,
 456                 .put = stac9460_dac_vol_put,
 457                 .private_value = 1,
 458                 .tlv = { .p = db_scale_dac }
 459         },
 460         {
 461                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 462                 .name = "DAC Switch",
 463                 .count = 6,
 464                 .info = stac9460_dac_mute_info,
 465                 .get = stac9460_dac_mute_get,
 466                 .put = stac9460_dac_mute_put,
 467         },
 468         {
 469                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 470                 .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
 471                            SNDRV_CTL_ELEM_ACCESS_TLV_READ),
 472                 .name = "DAC Volume",
 473                 .count = 6,
 474                 .info = stac9460_dac_vol_info,
 475                 .get = stac9460_dac_vol_get,
 476                 .put = stac9460_dac_vol_put,
 477                 .tlv = { .p = db_scale_dac }
 478         },
 479         {
 480                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 481                 .name = "ADC Capture Switch",
 482                 .count = 1,
 483                 .info = stac9460_adc_mute_info,
 484                 .get = stac9460_adc_mute_get,
 485                 .put = stac9460_adc_mute_put,
 486
 487         },
 488         {
 489                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 490                 .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
 491                            SNDRV_CTL_ELEM_ACCESS_TLV_READ),
 492                 .name = "ADC Capture Volume",
 493                 .count = 1,
 494                 .info = stac9460_adc_vol_info,
 495                 .get = stac9460_adc_vol_get,
 496                 .put = stac9460_adc_vol_put,
 497                 .tlv = { .p = db_scale_adc }
 498         },
 499         {
 500                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 501                 .name = "Analog Capture Input",
 502                 .info = stac9460_mic_sw_info,
 503                 .get = stac9460_mic_sw_get,
 504                 .put = stac9460_mic_sw_put,
 505
 506         },
 507 #if 0
 508         {
 509                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 510                 .name = "Capture Route",
 511                 .info = wm_adc_mux_info,
 512                 .get = wm_adc_mux_get,
 513                 .put = wm_adc_mux_put,
 514         },
 515         {
 516                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 517                 .name = "Headphone Amplifier Switch",
 518                 .info = aureon_bool_info,
 519                 .get = aureon_hpamp_get,
 520                 .put = aureon_hpamp_put
 521         },
 522         {
 523                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 524                 .name = "DAC Deemphasis Switch",
 525                 .info = aureon_bool_info,
 526                 .get = aureon_deemp_get,
 527                 .put = aureon_deemp_put
 528         },
 529         {
 530                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 531                 .name = "ADC Oversampling",
 532                 .info = aureon_oversampling_info,
 533                 .get = aureon_oversampling_get,
 534                 .put = aureon_oversampling_put
 535         },
 536 #endif
 537 };
 538
 539
 540 /* AK4114 - ICE1724 connections on Prodigy192 + MI/ODI/O */
 541 /* CDTO (pin 32) -- GPIO11 pin 86
 542  * CDTI (pin 33) -- GPIO10 pin 77
 543  * CCLK (pin 34) -- GPIO9 pin 76
 544  * CSN  (pin 35) -- GPIO8 pin 75
 545  */
 546 #define AK4114_ADDR     0x00 /* C1-C0: Chip Address
 547                               * (According to datasheet fixed to “00”)
 548                               */
 549
 550 /*
 551  * 4wire ak4114 protocol - writing data
 552  */
 553 static void write_data(struct snd_ice1712 *ice, unsigned int gpio,
 554                        unsigned int data, int idx)
 555 {
 556         for (; idx >= 0; idx--) {
 557                 /* drop clock */
 558                 gpio &= ~VT1724_PRODIGY192_CCLK;
 559                 snd_ice1712_gpio_write(ice, gpio);
 560                 udelay(1);
 561                 /* set data */
 562                 if (data & (1 << idx))
 563                         gpio |= VT1724_PRODIGY192_CDOUT;
 564                 else
 565                         gpio &= ~VT1724_PRODIGY192_CDOUT;
 566                 snd_ice1712_gpio_write(ice, gpio);
 567                 udelay(1);
 568                 /* raise clock */
 569                 gpio |= VT1724_PRODIGY192_CCLK;
 570                 snd_ice1712_gpio_write(ice, gpio);
 571                 udelay(1);
 572         }
 573 }
 574
 575 /*
 576  * 4wire ak4114 protocol - reading data
 577  */
 578 static unsigned char read_data(struct snd_ice1712 *ice, unsigned int gpio,
 579                                int idx)
 580 {
 581         unsigned char data = 0;
 582
 583         for (; idx >= 0; idx--) {
 584                 /* drop clock */
 585                 gpio &= ~VT1724_PRODIGY192_CCLK;
 586                 snd_ice1712_gpio_write(ice, gpio);
 587                 udelay(1);
 588                 /* read data */
 589                 if (snd_ice1712_gpio_read(ice) & VT1724_PRODIGY192_CDIN)
 590                         data |= (1 << idx);
 591                 udelay(1);
 592                 /* raise clock */
 593                 gpio |= VT1724_PRODIGY192_CCLK;
 594                 snd_ice1712_gpio_write(ice, gpio);
 595                 udelay(1);
 596         }
 597         return data;
 598 }
 599 /*
 600  * 4wire ak4114 protocol - starting sequence
 601  */
 602 static unsigned int prodigy192_4wire_start(struct snd_ice1712 *ice)
 603 {
 604         unsigned int tmp;
 605
 606         snd_ice1712_save_gpio_status(ice);
 607         tmp = snd_ice1712_gpio_read(ice);
 608
 609         tmp |= VT1724_PRODIGY192_CCLK; /* high at init */
 610         tmp &= ~VT1724_PRODIGY192_CS; /* drop chip select */
 611         snd_ice1712_gpio_write(ice, tmp);
 612         udelay(1);
 613         return tmp;
 614 }
 615
 616 /*
 617  * 4wire ak4114 protocol - final sequence
 618  */
 619 static void prodigy192_4wire_finish(struct snd_ice1712 *ice, unsigned int tmp)
 620 {
 621         tmp |= VT1724_PRODIGY192_CS; /* raise chip select */
 622         snd_ice1712_gpio_write(ice, tmp);
 623         udelay(1);
 624         snd_ice1712_restore_gpio_status(ice);
 625 }
 626
 627 /*
 628  * Write data to addr register of ak4114
 629  */
 630 static void prodigy192_ak4114_write(void *private_data, unsigned char addr,
 631                                unsigned char data)
 632 {
 633         struct snd_ice1712 *ice = private_data;
 634         unsigned int tmp, addrdata;
 635         tmp = prodigy192_4wire_start(ice);
 636         addrdata = (AK4114_ADDR << 6) | 0x20 | (addr & 0x1f);
 637         addrdata = (addrdata << 8) | data;
 638         write_data(ice, tmp, addrdata, 15);
 639         prodigy192_4wire_finish(ice, tmp);
 640 }
 641
 642 /*
 643  * Read data from addr register of ak4114
 644  */
 645 static unsigned char prodigy192_ak4114_read(void *private_data,
 646                                             unsigned char addr)
 647 {
 648         struct snd_ice1712 *ice = private_data;
 649         unsigned int tmp;
 650         unsigned char data;
 651
 652         tmp = prodigy192_4wire_start(ice);
 653         write_data(ice, tmp, (AK4114_ADDR << 6) | (addr & 0x1f), 7);
 654         data = read_data(ice, tmp, 7);
 655         prodigy192_4wire_finish(ice, tmp);
 656         return data;
 657 }
 658
 659
 660 static int ak4114_input_sw_info(struct snd_kcontrol *kcontrol,
 661                                 struct snd_ctl_elem_info *uinfo)
 662 {
 663         static char *texts[2] = { "Toslink", "Coax" };
 664
 665         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 666         uinfo->count = 1;
 667         uinfo->value.enumerated.items = 2;
 668         if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
 669                 uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
 670         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
 671         return 0;
 672 }
 673
 674
 675 static int ak4114_input_sw_get(struct snd_kcontrol *kcontrol,
 676                         struct snd_ctl_elem_value *ucontrol)
 677 {
 678         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 679         unsigned char val;
 680
 681         val = prodigy192_ak4114_read(ice, AK4114_REG_IO1);
 682         /* AK4114_IPS0 bit = 0 -> RX0 = Toslink
 683          * AK4114_IPS0 bit = 1 -> RX1 = Coax
 684          */
 685         ucontrol->value.enumerated.item[0] = (val & AK4114_IPS0) ? 1 : 0;
 686         return 0;
 687 }
 688
 689 static int ak4114_input_sw_put(struct snd_kcontrol *kcontrol,
 690                         struct snd_ctl_elem_value *ucontrol)
 691 {
 692         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 693         unsigned char new, old, itemvalue;
 694         int change;
 695
 696         old = prodigy192_ak4114_read(ice, AK4114_REG_IO1);
 697         /* AK4114_IPS0 could be any bit */
 698         itemvalue = (ucontrol->value.enumerated.item[0]) ? 0xff : 0x00;
 699
 700         new = (itemvalue & AK4114_IPS0) | (old & ~AK4114_IPS0);
 701         change = (new != old);
 702         if (change)
 703                 prodigy192_ak4114_write(ice, AK4114_REG_IO1, new);
 704         return change;
 705 }
 706
 707
 708 static struct snd_kcontrol_new ak4114_controls[] __devinitdata = {
 709         {
 710                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 711                 .name = "MIODIO IEC958 Capture Input",
 712                 .info = ak4114_input_sw_info,
 713                 .get = ak4114_input_sw_get,
 714                 .put = ak4114_input_sw_put,
 715
 716         }
 717 };
 718
 719
 720 static int prodigy192_ak4114_init(struct snd_ice1712 *ice)
 721 {
 722         static const unsigned char ak4114_init_vals[] = {
 723                 AK4114_RST | AK4114_PWN | AK4114_OCKS0 | AK4114_OCKS1,
 724                 /* ice1724 expects I2S and provides clock,
 725                  * DEM0 disables the deemphasis filter
 726                  */
 727                 AK4114_DIF_I24I2S | AK4114_DEM0 ,
 728                 AK4114_TX1E,
 729                 AK4114_EFH_1024 | AK4114_DIT, /* default input RX0 */
 730                 0,
 731                 0
 732         };
 733         static const unsigned char ak4114_init_txcsb[] = {
 734                 0x41, 0x02, 0x2c, 0x00, 0x00
 735         };
 736
 737         return snd_ak4114_create(ice->card,
 738                                  prodigy192_ak4114_read,
 739                                  prodigy192_ak4114_write,
 740                                  ak4114_init_vals, ak4114_init_txcsb,
 741                                  ice, &ice->spec.prodigy192.ak4114);
 742 }
 743
 744 static int __devinit prodigy192_add_controls(struct snd_ice1712 *ice)
 745 {
 746         unsigned int i;
 747         int err;
 748
 749         for (i = 0; i < ARRAY_SIZE(stac_controls); i++) {
 750                 err = snd_ctl_add(ice->card,
 751                                   snd_ctl_new1(&stac_controls[i], ice));
 752                 if (err < 0)
 753                         return err;
 754         }
 755         if (ice->spec.prodigy192.ak4114) {
 756                 /* ak4114 is connected */
 757                 for (i = 0; i < ARRAY_SIZE(ak4114_controls); i++) {
 758                         err = snd_ctl_add(ice->card,
 759                                           snd_ctl_new1(&ak4114_controls[i],
 760                                                        ice));
 761                         if (err < 0)
 762                                 return err;
 763                 }
 764                 err = snd_ak4114_build(ice->spec.prodigy192.ak4114,
 765                                 NULL, /* ak4114 in MIO/DI/O handles no IEC958 output */
 766                                 ice->pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
 767                 if (err < 0)
 768                         return err;
 769         }
 770         return 0;
 771 }
 772
 773 /*
 774  * check for presence of MI/ODI/O add-on card with digital inputs
 775  */
 776 static int prodigy192_miodio_exists(struct snd_ice1712 *ice)
 777 {
 778
 779         unsigned char orig_value;
 780         const unsigned char test_data = 0xd1;   /* random value */
 781         unsigned char addr = AK4114_REG_INT0_MASK; /* random SAFE address */
 782         int exists = 0;
 783
 784         orig_value = prodigy192_ak4114_read(ice, addr);
 785         prodigy192_ak4114_write(ice, addr, test_data);
 786         if (prodigy192_ak4114_read(ice, addr) == test_data) {
 787                 /* ak4114 seems to communicate, apparently exists */
 788                 /* writing back original value */
 789                 prodigy192_ak4114_write(ice, addr, orig_value);
 790                 exists = 1;
 791         }
 792         return exists;
 793 }
 794
 795 /*
 796  * initialize the chip
 797  */
 798 static int __devinit prodigy192_init(struct snd_ice1712 *ice)
 799 {
 800         static const unsigned short stac_inits_prodigy[] = {
 801                 STAC946X_RESET, 0,
 802 /*              STAC946X_MASTER_VOLUME, 0,
 803                 STAC946X_LF_VOLUME, 0,
 804                 STAC946X_RF_VOLUME, 0,
 805                 STAC946X_LR_VOLUME, 0,
 806                 STAC946X_RR_VOLUME, 0,
 807                 STAC946X_CENTER_VOLUME, 0,
 808                 STAC946X_LFE_VOLUME, 0,*/
 809                 (unsigned short)-1
 810         };
 811         const unsigned short *p;
 812         int err = 0;
 813
 814         /* prodigy 192 */
 815         ice->num_total_dacs = 6;
 816         ice->num_total_adcs = 2;
 817         ice->vt1720 = 0;  /* ice1724, e.g. 23 GPIOs */
 818
 819         /* initialize codec */
 820         p = stac_inits_prodigy;
 821         for (; *p != (unsigned short)-1; p += 2)
 822                 stac9460_put(ice, p[0], p[1]);
 823
 824         /* MI/ODI/O add on card with AK4114 */
 825         if (prodigy192_miodio_exists(ice)) {
 826                 err = prodigy192_ak4114_init(ice);
 827                 /* from this moment if err = 0 then
 828                  * ice->spec.prodigy192.ak4114 should not be null
 829                  */
 830                 snd_printdd("AK4114 initialized with status %d\n", err);
 831         } else
 832                 snd_printdd("AK4114 not found\n");
 833         if (err < 0)
 834                 return err;
 835
 836         return 0;
 837 }
 838
 839
 840 /*
 841  * Aureon boards don't provide the EEPROM data except for the vendor IDs.
 842  * hence the driver needs to sets up it properly.
 843  */
 844
 845 static unsigned char prodigy71_eeprom[] __devinitdata = {
 846         [ICE_EEP2_SYSCONF]     = 0x6a,  /* 49MHz crystal, mpu401,
 847                                          * spdif-in+ 1 stereo ADC,
 848                                          * 3 stereo DACs
 849                                          */
 850         [ICE_EEP2_ACLINK]      = 0x80,  /* I2S */
 851         [ICE_EEP2_I2S]         = 0xf8,  /* vol, 96k, 24bit, 192k */
 852         [ICE_EEP2_SPDIF]       = 0xc3,  /* out-en, out-int, spdif-in */
 853         [ICE_EEP2_GPIO_DIR]    = 0xff,
 854         [ICE_EEP2_GPIO_DIR1]   = ~(VT1724_PRODIGY192_CDIN >> 8) ,
 855         [ICE_EEP2_GPIO_DIR2]   = 0xbf,
 856         [ICE_EEP2_GPIO_MASK]   = 0x00,
 857         [ICE_EEP2_GPIO_MASK1]  = 0x00,
 858         [ICE_EEP2_GPIO_MASK2]  = 0x00,
 859         [ICE_EEP2_GPIO_STATE]  = 0x00,
 860         [ICE_EEP2_GPIO_STATE1] = 0x00,
 861         [ICE_EEP2_GPIO_STATE2] = 0x10,  /* GPIO20: 0 = CD drive dig. input
 862                                          * passthrough,
 863                                          * 1 = SPDIF-OUT from ice1724
 864                                          */
 865 };
 866
 867
 868 /* entry point */
 869 struct snd_ice1712_card_info snd_vt1724_prodigy192_cards[] __devinitdata = {
 870         {
 871                 .subvendor = VT1724_SUBDEVICE_PRODIGY192VE,
 872                 .name = "Audiotrak Prodigy 192",
 873                 .model = "prodigy192",
 874                 .chip_init = prodigy192_init,
 875                 .build_controls = prodigy192_add_controls,
 876                 .eeprom_size = sizeof(prodigy71_eeprom),
 877                 .eeprom_data = prodigy71_eeprom,
 878         },
 879         { } /* terminator */
 880 };