sound/pci/ice1712/juli.c

   1 /*
   2  *   ALSA driver for ICEnsemble VT1724 (Envy24HT)
   3  *
   4  *   Lowlevel functions for ESI Juli@ cards
   5  *
   6  *      Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz>
   7  *                    2008 Pavel Hofman <dustin@seznam.cz>
   8  *
   9  *
  10  *   This program is free software; you can redistribute it and/or modify
  11  *   it under the terms of the GNU General Public License as published by
  12  *   the Free Software Foundation; either version 2 of the License, or
  13  *   (at your option) any later version.
  14  *
  15  *   This program is distributed in the hope that it will be useful,
  16  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *   GNU General Public License for more details.
  19  *
  20  *   You should have received a copy of the GNU General Public License
  21  *   along with this program; if not, write to the Free Software
  22  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23  *
  24  */
  25
  26 #include <asm/io.h>
  27 #include <linux/delay.h>
  28 #include <linux/interrupt.h>
  29 #include <linux/init.h>
  30 #include <linux/slab.h>
  31 #include <sound/core.h>
  32 #include <sound/tlv.h>
  33
  34 #include "ice1712.h"
  35 #include "envy24ht.h"
  36 #include "juli.h"
  37 struct juli_spec {
  38         struct ak4114 *ak4114;
  39         unsigned int analog: 1;
  40 };
  41
  42 /*
  43  * chip addresses on I2C bus
  44  */
  45 #define AK4114_ADDR             0x20            /* S/PDIF receiver */
  46 #define AK4358_ADDR             0x22            /* DAC */
  47
  48 /*
  49  * Juli does not use the standard ICE1724 clock scheme. Juli's ice1724 chip is
  50  * supplied by external clock provided by Xilinx array and MK73-1 PLL frequency
  51  * multiplier. Actual frequency is set by ice1724 GPIOs hooked to the Xilinx.
  52  *
  53  * The clock circuitry is supplied by the two ice1724 crystals. This
  54  * arrangement allows to generate independent clock signal for AK4114's input
  55  * rate detection circuit. As a result, Juli, unlike most other
  56  * ice1724+ak4114-based cards, detects spdif input rate correctly.
  57  * This fact is applied in the driver, allowing to modify PCM stream rate
  58  * parameter according to the actual input rate.
  59  *
  60  * Juli uses the remaining three stereo-channels of its DAC to optionally
  61  * monitor analog input, digital input, and digital output. The corresponding
  62  * I2S signals are routed by Xilinx, controlled by GPIOs.
  63  *
  64  * The master mute is implemented using output muting transistors (GPIO) in
  65  * combination with smuting the DAC.
  66  *
  67  * The card itself has no HW master volume control, implemented using the
  68  * vmaster control.
  69  *
  70  * TODO:
  71  * researching and fixing the input monitors
  72  */
  73
  74 /*
  75  * GPIO pins
  76  */
  77 #define GPIO_FREQ_MASK          (3<<0)
  78 #define GPIO_FREQ_32KHZ         (0<<0)
  79 #define GPIO_FREQ_44KHZ         (1<<0)
  80 #define GPIO_FREQ_48KHZ         (2<<0)
  81 #define GPIO_MULTI_MASK         (3<<2)
  82 #define GPIO_MULTI_4X           (0<<2)
  83 #define GPIO_MULTI_2X           (1<<2)
  84 #define GPIO_MULTI_1X           (2<<2)          /* also external */
  85 #define GPIO_MULTI_HALF         (3<<2)
  86 #define GPIO_INTERNAL_CLOCK     (1<<4)          /* 0 = external, 1 = internal */
  87 #define GPIO_CLOCK_MASK         (1<<4)
  88 #define GPIO_ANALOG_PRESENT     (1<<5)          /* RO only: 0 = present */
  89 #define GPIO_RXMCLK_SEL         (1<<7)          /* must be 0 */
  90 #define GPIO_AK5385A_CKS0       (1<<8)
  91 #define GPIO_AK5385A_DFS1       (1<<9)
  92 #define GPIO_AK5385A_DFS0       (1<<10)
  93 #define GPIO_DIGOUT_MONITOR     (1<<11)         /* 1 = active */
  94 #define GPIO_DIGIN_MONITOR      (1<<12)         /* 1 = active */
  95 #define GPIO_ANAIN_MONITOR      (1<<13)         /* 1 = active */
  96 #define GPIO_AK5385A_CKS1       (1<<14)         /* must be 0 */
  97 #define GPIO_MUTE_CONTROL       (1<<15)         /* output mute, 1 = muted */
  98
  99 #define GPIO_RATE_MASK          (GPIO_FREQ_MASK | GPIO_MULTI_MASK | \
 100                 GPIO_CLOCK_MASK)
 101 #define GPIO_AK5385A_MASK       (GPIO_AK5385A_CKS0 | GPIO_AK5385A_DFS0 | \
 102                 GPIO_AK5385A_DFS1 | GPIO_AK5385A_CKS1)
 103
 104 #define JULI_PCM_RATE   (SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
 105                 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
 106                 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_64000 | \
 107                 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 | \
 108                 SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000)
 109
 110 #define GPIO_RATE_16000         (GPIO_FREQ_32KHZ | GPIO_MULTI_HALF | \
 111                 GPIO_INTERNAL_CLOCK)
 112 #define GPIO_RATE_22050         (GPIO_FREQ_44KHZ | GPIO_MULTI_HALF | \
 113                 GPIO_INTERNAL_CLOCK)
 114 #define GPIO_RATE_24000         (GPIO_FREQ_48KHZ | GPIO_MULTI_HALF | \
 115                 GPIO_INTERNAL_CLOCK)
 116 #define GPIO_RATE_32000         (GPIO_FREQ_32KHZ | GPIO_MULTI_1X | \
 117                 GPIO_INTERNAL_CLOCK)
 118 #define GPIO_RATE_44100         (GPIO_FREQ_44KHZ | GPIO_MULTI_1X | \
 119                 GPIO_INTERNAL_CLOCK)
 120 #define GPIO_RATE_48000         (GPIO_FREQ_48KHZ | GPIO_MULTI_1X | \
 121                 GPIO_INTERNAL_CLOCK)
 122 #define GPIO_RATE_64000         (GPIO_FREQ_32KHZ | GPIO_MULTI_2X | \
 123                 GPIO_INTERNAL_CLOCK)
 124 #define GPIO_RATE_88200         (GPIO_FREQ_44KHZ | GPIO_MULTI_2X | \
 125                 GPIO_INTERNAL_CLOCK)
 126 #define GPIO_RATE_96000         (GPIO_FREQ_48KHZ | GPIO_MULTI_2X | \
 127                 GPIO_INTERNAL_CLOCK)
 128 #define GPIO_RATE_176400        (GPIO_FREQ_44KHZ | GPIO_MULTI_4X | \
 129                 GPIO_INTERNAL_CLOCK)
 130 #define GPIO_RATE_192000        (GPIO_FREQ_48KHZ | GPIO_MULTI_4X | \
 131                 GPIO_INTERNAL_CLOCK)
 132
 133 /*
 134  * Initial setup of the conversion array GPIO <-> rate
 135  */
 136 static unsigned int juli_rates[] = {
 137         16000, 22050, 24000, 32000,
 138         44100, 48000, 64000, 88200,
 139         96000, 176400, 192000,
 140 };
 141
 142 static unsigned int gpio_vals[] = {
 143         GPIO_RATE_16000, GPIO_RATE_22050, GPIO_RATE_24000, GPIO_RATE_32000,
 144         GPIO_RATE_44100, GPIO_RATE_48000, GPIO_RATE_64000, GPIO_RATE_88200,
 145         GPIO_RATE_96000, GPIO_RATE_176400, GPIO_RATE_192000,
 146 };
 147
 148 static struct snd_pcm_hw_constraint_list juli_rates_info = {
 149         .count = ARRAY_SIZE(juli_rates),
 150         .list = juli_rates,
 151         .mask = 0,
 152 };
 153
 154 static int get_gpio_val(int rate)
 155 {
 156         int i;
 157         for (i = 0; i < ARRAY_SIZE(juli_rates); i++)
 158                 if (juli_rates[i] == rate)
 159                         return gpio_vals[i];
 160         return 0;
 161 }
 162
 163 static void juli_ak4114_write(void *private_data, unsigned char reg, unsigned char val)
 164 {
 165         snd_vt1724_write_i2c((struct snd_ice1712 *)private_data, AK4114_ADDR, reg, val);
 166 }
 167
 168 static unsigned char juli_ak4114_read(void *private_data, unsigned char reg)
 169 {
 170         return snd_vt1724_read_i2c((struct snd_ice1712 *)private_data, AK4114_ADDR, reg);
 171 }
 172
 173 /*
 174  * If SPDIF capture and slaved to SPDIF-IN, setting runtime rate
 175  * to the external rate
 176  */
 177 static void juli_spdif_in_open(struct snd_ice1712 *ice,
 178                                struct snd_pcm_substream *substream)
 179 {
 180         struct juli_spec *spec = ice->spec;
 181         struct snd_pcm_runtime *runtime = substream->runtime;
 182         int rate;
 183
 184         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK ||
 185                         !ice->is_spdif_master(ice))
 186                 return;
 187         rate = snd_ak4114_external_rate(spec->ak4114);
 188         if (rate >= runtime->hw.rate_min && rate <= runtime->hw.rate_max) {
 189                 runtime->hw.rate_min = rate;
 190                 runtime->hw.rate_max = rate;
 191         }
 192 }
 193
 194 /*
 195  * AK4358 section
 196  */
 197
 198 static void juli_akm_lock(struct snd_akm4xxx *ak, int chip)
 199 {
 200 }
 201
 202 static void juli_akm_unlock(struct snd_akm4xxx *ak, int chip)
 203 {
 204 }
 205
 206 static void juli_akm_write(struct snd_akm4xxx *ak, int chip,
 207                            unsigned char addr, unsigned char data)
 208 {
 209         struct snd_ice1712 *ice = ak->private_data[0];
 210
 211         snd_assert(chip == 0, return);
 212         snd_vt1724_write_i2c(ice, AK4358_ADDR, addr, data);
 213 }
 214
 215 /*
 216  * change the rate of envy24HT, AK4358, AK5385
 217  */
 218 static void juli_akm_set_rate_val(struct snd_akm4xxx *ak, unsigned int rate)
 219 {
 220         unsigned char old, tmp, ak4358_dfs;
 221         unsigned int ak5385_pins, old_gpio, new_gpio;
 222         struct snd_ice1712 *ice = ak->private_data[0];
 223         struct juli_spec *spec = ice->spec;
 224
 225         if (rate == 0)  /* no hint - S/PDIF input is master or the new spdif
 226                            input rate undetected, simply return */
 227                 return;
 228
 229         /* adjust DFS on codecs */
 230         if (rate > 96000)  {
 231                 ak4358_dfs = 2;
 232                 ak5385_pins = GPIO_AK5385A_DFS1 | GPIO_AK5385A_CKS0;
 233         } else if (rate > 48000) {
 234                 ak4358_dfs = 1;
 235                 ak5385_pins = GPIO_AK5385A_DFS0;
 236         } else {
 237                 ak4358_dfs = 0;
 238                 ak5385_pins = 0;
 239         }
 240         /* AK5385 first, since it requires cold reset affecting both codecs */
 241         old_gpio = ice->gpio.get_data(ice);
 242         new_gpio =  (old_gpio & ~GPIO_AK5385A_MASK) | ak5385_pins;
 243         /* printk(KERN_DEBUG "JULI - ak5385 set_rate_val: new gpio 0x%x\n",
 244                 new_gpio); */
 245         ice->gpio.set_data(ice, new_gpio);
 246
 247         /* cold reset */
 248         old = inb(ICEMT1724(ice, AC97_CMD));
 249         outb(old | VT1724_AC97_COLD, ICEMT1724(ice, AC97_CMD));
 250         udelay(1);
 251         outb(old & ~VT1724_AC97_COLD, ICEMT1724(ice, AC97_CMD));
 252
 253         /* AK4358 */
 254         /* set new value, reset DFS */
 255         tmp = snd_akm4xxx_get(ak, 0, 2);
 256         snd_akm4xxx_reset(ak, 1);
 257         tmp = snd_akm4xxx_get(ak, 0, 2);
 258         tmp &= ~(0x03 << 4);
 259         tmp |= ak4358_dfs << 4;
 260         snd_akm4xxx_set(ak, 0, 2, tmp);
 261         snd_akm4xxx_reset(ak, 0);
 262
 263         /* reinit ak4114 */
 264         snd_ak4114_reinit(spec->ak4114);
 265 }
 266
 267 #define AK_DAC(xname, xch)      { .name = xname, .num_channels = xch }
 268 #define PCM_VOLUME              "PCM Playback Volume"
 269 #define MONITOR_AN_IN_VOLUME    "Monitor Analog In Volume"
 270 #define MONITOR_DIG_IN_VOLUME   "Monitor Digital In Volume"
 271 #define MONITOR_DIG_OUT_VOLUME  "Monitor Digital Out Volume"
 272
 273 static const struct snd_akm4xxx_dac_channel juli_dac[] = {
 274         AK_DAC(PCM_VOLUME, 2),
 275         AK_DAC(MONITOR_AN_IN_VOLUME, 2),
 276         AK_DAC(MONITOR_DIG_OUT_VOLUME, 2),
 277         AK_DAC(MONITOR_DIG_IN_VOLUME, 2),
 278 };
 279
 280
 281 static struct snd_akm4xxx akm_juli_dac __devinitdata = {
 282         .type = SND_AK4358,
 283         .num_dacs = 8,  /* DAC1 - analog out
 284                            DAC2 - analog in monitor
 285                            DAC3 - digital out monitor
 286                            DAC4 - digital in monitor
 287                          */
 288         .ops = {
 289                 .lock = juli_akm_lock,
 290                 .unlock = juli_akm_unlock,
 291                 .write = juli_akm_write,
 292                 .set_rate_val = juli_akm_set_rate_val
 293         },
 294         .dac_info = juli_dac,
 295 };
 296
 297 #define juli_mute_info          snd_ctl_boolean_mono_info
 298
 299 static int juli_mute_get(struct snd_kcontrol *kcontrol,
 300                 struct snd_ctl_elem_value *ucontrol)
 301 {
 302         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 303         unsigned int val;
 304         val = ice->gpio.get_data(ice) & (unsigned int) kcontrol->private_value;
 305         if (kcontrol->private_value == GPIO_MUTE_CONTROL)
 306                 /* val 0 = signal on */
 307                 ucontrol->value.integer.value[0] = (val) ? 0 : 1;
 308         else
 309                 /* val 1 = signal on */
 310                 ucontrol->value.integer.value[0] = (val) ? 1 : 0;
 311         return 0;
 312 }
 313
 314 static int juli_mute_put(struct snd_kcontrol *kcontrol,
 315                 struct snd_ctl_elem_value *ucontrol)
 316 {
 317         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 318         unsigned int old_gpio, new_gpio;
 319         old_gpio = ice->gpio.get_data(ice);
 320         if (ucontrol->value.integer.value[0]) {
 321                 /* unmute */
 322                 if (kcontrol->private_value == GPIO_MUTE_CONTROL) {
 323                         /* 0 = signal on */
 324                         new_gpio = old_gpio & ~GPIO_MUTE_CONTROL;
 325                         /* un-smuting DAC */
 326                         snd_akm4xxx_write(ice->akm, 0, 0x01, 0x01);
 327                 } else
 328                         /* 1 = signal on */
 329                         new_gpio =  old_gpio |
 330                                 (unsigned int) kcontrol->private_value;
 331         } else {
 332                 /* mute */
 333                 if (kcontrol->private_value == GPIO_MUTE_CONTROL) {
 334                         /* 1 = signal off */
 335                         new_gpio = old_gpio | GPIO_MUTE_CONTROL;
 336                         /* smuting DAC */
 337                         snd_akm4xxx_write(ice->akm, 0, 0x01, 0x03);
 338                 } else
 339                         /* 0 = signal off */
 340                         new_gpio =  old_gpio &
 341                                 ~((unsigned int) kcontrol->private_value);
 342         }
 343         /* printk("JULI - mute/unmute: control_value: 0x%x, old_gpio: 0x%x, \
 344                 new_gpio 0x%x\n",
 345                 (unsigned int)ucontrol->value.integer.value[0], old_gpio,
 346                 new_gpio); */
 347         if (old_gpio != new_gpio) {
 348                 ice->gpio.set_data(ice, new_gpio);
 349                 return 1;
 350         }
 351         /* no change */
 352         return 0;
 353 }
 354
 355 static struct snd_kcontrol_new juli_mute_controls[] __devinitdata = {
 356         {
 357                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 358                 .name = "Master Playback Switch",
 359                 .info = juli_mute_info,
 360                 .get = juli_mute_get,
 361                 .put = juli_mute_put,
 362                 .private_value = GPIO_MUTE_CONTROL,
 363         },
 364         /* Although the following functionality respects the succint NDA'd
 365          * documentation from the card manufacturer, and the same way of
 366          * operation is coded in OSS Juli driver, only Digital Out monitor
 367          * seems to work. Surprisingly, Analog input monitor outputs Digital
 368          * output data. The two are independent, as enabling both doubles
 369          * volume of the monitor sound.
 370          *
 371          * Checking traces on the board suggests the functionality described
 372          * by the manufacturer is correct - I2S from ADC and AK4114
 373          * go to ICE as well as to Xilinx, I2S inputs of DAC2,3,4 (the monitor
 374          * inputs) are fed from Xilinx.
 375          *
 376          * I even checked traces on board and coded a support in driver for
 377          * an alternative possiblity - the unused I2S ICE output channels
 378          * switched to HW-IN/SPDIF-IN and providing the monitoring signal to
 379          * the DAC - to no avail. The I2S outputs seem to be unconnected.
 380          *
 381          * The windows driver supports the monitoring correctly.
 382          */
 383         {
 384                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 385                 .name = "Monitor Analog In Switch",
 386                 .info = juli_mute_info,
 387                 .get = juli_mute_get,
 388                 .put = juli_mute_put,
 389                 .private_value = GPIO_ANAIN_MONITOR,
 390         },
 391         {
 392                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 393                 .name = "Monitor Digital Out Switch",
 394                 .info = juli_mute_info,
 395                 .get = juli_mute_get,
 396                 .put = juli_mute_put,
 397                 .private_value = GPIO_DIGOUT_MONITOR,
 398         },
 399         {
 400                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 401                 .name = "Monitor Digital In Switch",
 402                 .info = juli_mute_info,
 403                 .get = juli_mute_get,
 404                 .put = juli_mute_put,
 405                 .private_value = GPIO_DIGIN_MONITOR,
 406         },
 407 };
 408
 409
 410 static void ak4358_proc_regs_read(struct snd_info_entry *entry,
 411                 struct snd_info_buffer *buffer)
 412 {
 413         struct snd_ice1712 *ice = (struct snd_ice1712 *)entry->private_data;
 414         int reg, val;
 415         for (reg = 0; reg <= 0xf; reg++) {
 416                 val =  snd_akm4xxx_get(ice->akm, 0, reg);
 417                 snd_iprintf(buffer, "0x%02x = 0x%02x\n", reg, val);
 418         }
 419 }
 420
 421 static void ak4358_proc_init(struct snd_ice1712 *ice)
 422 {
 423         struct snd_info_entry *entry;
 424         if (!snd_card_proc_new(ice->card, "ak4358_codec", &entry))
 425                 snd_info_set_text_ops(entry, ice, ak4358_proc_regs_read);
 426 }
 427
 428 static char *slave_vols[] __devinitdata = {
 429         PCM_VOLUME,
 430         MONITOR_AN_IN_VOLUME,
 431         MONITOR_DIG_IN_VOLUME,
 432         MONITOR_DIG_OUT_VOLUME,
 433         NULL
 434 };
 435
 436 static __devinitdata
 437 DECLARE_TLV_DB_SCALE(juli_master_db_scale, -6350, 50, 1);
 438
 439 static struct snd_kcontrol __devinit *ctl_find(struct snd_card *card,
 440                 const char *name)
 441 {
 442         struct snd_ctl_elem_id sid;
 443         memset(&sid, 0, sizeof(sid));
 444         /* FIXME: strcpy is bad. */
 445         strcpy(sid.name, name);
 446         sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 447         return snd_ctl_find_id(card, &sid);
 448 }
 449
 450 static void __devinit add_slaves(struct snd_card *card,
 451                                  struct snd_kcontrol *master, char **list)
 452 {
 453         for (; *list; list++) {
 454                 struct snd_kcontrol *slave = ctl_find(card, *list);
 455                 /* printk(KERN_DEBUG "add_slaves - %s\n", *list); */
 456                 if (slave) {
 457                         /* printk(KERN_DEBUG "slave %s found\n", *list); */
 458                         snd_ctl_add_slave(master, slave);
 459                 }
 460         }
 461 }
 462
 463 static int __devinit juli_add_controls(struct snd_ice1712 *ice)
 464 {
 465         struct juli_spec *spec = ice->spec;
 466         int err;
 467         unsigned int i;
 468         struct snd_kcontrol *vmaster;
 469
 470         err = snd_ice1712_akm4xxx_build_controls(ice);
 471         if (err < 0)
 472                 return err;
 473
 474         for (i = 0; i < ARRAY_SIZE(juli_mute_controls); i++) {
 475                 err = snd_ctl_add(ice->card,
 476                                 snd_ctl_new1(&juli_mute_controls[i], ice));
 477                 if (err < 0)
 478                         return err;
 479         }
 480         /* Create virtual master control */
 481         vmaster = snd_ctl_make_virtual_master("Master Playback Volume",
 482                                               juli_master_db_scale);
 483         if (!vmaster)
 484                 return -ENOMEM;
 485         add_slaves(ice->card, vmaster, slave_vols);
 486         err = snd_ctl_add(ice->card, vmaster);
 487         if (err < 0)
 488                 return err;
 489
 490         /* only capture SPDIF over AK4114 */
 491         err = snd_ak4114_build(spec->ak4114, NULL,
 492                         ice->pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
 493
 494         ak4358_proc_init(ice);
 495         if (err < 0)
 496                 return err;
 497         return 0;
 498 }
 499
 500 /*
 501  * initialize the chip
 502  */
 503
 504 static inline int juli_is_spdif_master(struct snd_ice1712 *ice)
 505 {
 506         return (ice->gpio.get_data(ice) & GPIO_INTERNAL_CLOCK) ? 0 : 1;
 507 }
 508
 509 static unsigned int juli_get_rate(struct snd_ice1712 *ice)
 510 {
 511         int i;
 512         unsigned char result;
 513
 514         result =  ice->gpio.get_data(ice) & GPIO_RATE_MASK;
 515         for (i = 0; i < ARRAY_SIZE(gpio_vals); i++)
 516                 if (gpio_vals[i] == result)
 517                         return juli_rates[i];
 518         return 0;
 519 }
 520
 521 /* setting new rate */
 522 static void juli_set_rate(struct snd_ice1712 *ice, unsigned int rate)
 523 {
 524         unsigned int old, new;
 525         unsigned char val;
 526
 527         old = ice->gpio.get_data(ice);
 528         new =  (old & ~GPIO_RATE_MASK) | get_gpio_val(rate);
 529         /* printk(KERN_DEBUG "JULI - set_rate: old %x, new %x\n",
 530                         old & GPIO_RATE_MASK,
 531                         new & GPIO_RATE_MASK); */
 532
 533         ice->gpio.set_data(ice, new);
 534         /* switching to external clock - supplied by external circuits */
 535         val = inb(ICEMT1724(ice, RATE));
 536         outb(val | VT1724_SPDIF_MASTER, ICEMT1724(ice, RATE));
 537 }
 538
 539 static inline unsigned char juli_set_mclk(struct snd_ice1712 *ice,
 540                                           unsigned int rate)
 541 {
 542         /* no change in master clock */
 543         return 0;
 544 }
 545
 546 /* setting clock to external - SPDIF */
 547 static void juli_set_spdif_clock(struct snd_ice1712 *ice)
 548 {
 549         unsigned int old;
 550         old = ice->gpio.get_data(ice);
 551         /* external clock (= 0), multiply 1x, 48kHz */
 552         ice->gpio.set_data(ice, (old & ~GPIO_RATE_MASK) | GPIO_MULTI_1X |
 553                         GPIO_FREQ_48KHZ);
 554 }
 555
 556 /* Called when ak4114 detects change in the input SPDIF stream */
 557 static void juli_ak4114_change(struct ak4114 *ak4114, unsigned char c0,
 558                                unsigned char c1)
 559 {
 560         struct snd_ice1712 *ice = ak4114->change_callback_private;
 561         int rate;
 562         if (ice->is_spdif_master(ice) && c1) {
 563                 /* only for SPDIF master mode, rate was changed */
 564                 rate = snd_ak4114_external_rate(ak4114);
 565                 /* printk(KERN_DEBUG "ak4114 - input rate changed to %d\n",
 566                                 rate); */
 567                 juli_akm_set_rate_val(ice->akm, rate);
 568         }
 569 }
 570
 571 static int __devinit juli_init(struct snd_ice1712 *ice)
 572 {
 573         static const unsigned char ak4114_init_vals[] = {
 574                 /* AK4117_REG_PWRDN */  AK4114_RST | AK4114_PWN | AK4114_OCKS0 | AK4114_OCKS1,
 575                 /* AK4114_REQ_FORMAT */ AK4114_DIF_I24I2S,
 576                 /* AK4114_REG_IO0 */    AK4114_TX1E,
 577                 /* AK4114_REG_IO1 */    AK4114_EFH_1024 | AK4114_DIT | AK4114_IPS(1),
 578                 /* AK4114_REG_INT0_MASK */ 0,
 579                 /* AK4114_REG_INT1_MASK */ 0
 580         };
 581         static const unsigned char ak4114_init_txcsb[] = {
 582                 0x41, 0x02, 0x2c, 0x00, 0x00
 583         };
 584         int err;
 585         struct juli_spec *spec;
 586         struct snd_akm4xxx *ak;
 587
 588         spec = kzalloc(sizeof(*spec), GFP_KERNEL);
 589         if (!spec)
 590                 return -ENOMEM;
 591         ice->spec = spec;
 592
 593         err = snd_ak4114_create(ice->card,
 594                                 juli_ak4114_read,
 595                                 juli_ak4114_write,
 596                                 ak4114_init_vals, ak4114_init_txcsb,
 597                                 ice, &spec->ak4114);
 598         if (err < 0)
 599                 return err;
 600         /* callback for codecs rate setting */
 601         spec->ak4114->change_callback = juli_ak4114_change;
 602         spec->ak4114->change_callback_private = ice;
 603         /* AK4114 in Juli can detect external rate correctly */
 604         spec->ak4114->check_flags = 0;
 605
 606 #if 0
 607         /* it seems that the analog doughter board detection does not work
 608            reliably, so force the analog flag; it should be very rare
 609            to use Juli@ without the analog doughter board */
 610         spec->analog = (ice->gpio.get_data(ice) & GPIO_ANALOG_PRESENT) ? 0 : 1;
 611 #else
 612         spec->analog = 1;
 613 #endif
 614
 615         if (spec->analog) {
 616                 printk(KERN_INFO "juli@: analog I/O detected\n");
 617                 ice->num_total_dacs = 2;
 618                 ice->num_total_adcs = 2;
 619
 620                 ak = ice->akm = kzalloc(sizeof(struct snd_akm4xxx), GFP_KERNEL);
 621                 if (! ak)
 622                         return -ENOMEM;
 623                 ice->akm_codecs = 1;
 624                 if ((err = snd_ice1712_akm4xxx_init(ak, &akm_juli_dac, NULL, ice)) < 0)
 625                         return err;
 626         }
 627
 628         /* juli is clocked by Xilinx array */
 629         ice->hw_rates = &juli_rates_info;
 630         ice->is_spdif_master = juli_is_spdif_master;
 631         ice->get_rate = juli_get_rate;
 632         ice->set_rate = juli_set_rate;
 633         ice->set_mclk = juli_set_mclk;
 634         ice->set_spdif_clock = juli_set_spdif_clock;
 635
 636         ice->spdif.ops.open = juli_spdif_in_open;
 637         return 0;
 638 }
 639
 640
 641 /*
 642  * Juli@ boards don't provide the EEPROM data except for the vendor IDs.
 643  * hence the driver needs to sets up it properly.
 644  */
 645
 646 static unsigned char juli_eeprom[] __devinitdata = {
 647         [ICE_EEP2_SYSCONF]     = 0x2b,  /* clock 512, mpu401, 1xADC, 1xDACs,
 648                                            SPDIF in */
 649         [ICE_EEP2_ACLINK]      = 0x80,  /* I2S */
 650         [ICE_EEP2_I2S]         = 0xf8,  /* vol, 96k, 24bit, 192k */
 651         [ICE_EEP2_SPDIF]       = 0xc3,  /* out-en, out-int, spdif-in */
 652         [ICE_EEP2_GPIO_DIR]    = 0x9f,  /* 5, 6:inputs; 7, 4-0 outputs*/
 653         [ICE_EEP2_GPIO_DIR1]   = 0xff,
 654         [ICE_EEP2_GPIO_DIR2]   = 0x7f,
 655         [ICE_EEP2_GPIO_MASK]   = 0x60,  /* 5, 6: locked; 7, 4-0 writable */
 656         [ICE_EEP2_GPIO_MASK1]  = 0x00,  /* 0-7 writable */
 657         [ICE_EEP2_GPIO_MASK2]  = 0x7f,
 658         [ICE_EEP2_GPIO_STATE]  = GPIO_FREQ_48KHZ | GPIO_MULTI_1X |
 659                GPIO_INTERNAL_CLOCK,     /* internal clock, multiple 1x, 48kHz*/
 660         [ICE_EEP2_GPIO_STATE1] = 0x00,  /* unmuted */
 661         [ICE_EEP2_GPIO_STATE2] = 0x00,
 662 };
 663
 664 /* entry point */
 665 struct snd_ice1712_card_info snd_vt1724_juli_cards[] __devinitdata = {
 666         {
 667                 .subvendor = VT1724_SUBDEVICE_JULI,
 668                 .name = "ESI Juli@",
 669                 .model = "juli",
 670                 .chip_init = juli_init,
 671                 .build_controls = juli_add_controls,
 672                 .eeprom_size = sizeof(juli_eeprom),
 673                 .eeprom_data = juli_eeprom,
 674         },
 675         { } /* terminator */
 676 };