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
  38 struct juli_spec {
  39         struct ak4114 *ak4114;
  40         unsigned int analog:1;
  41 };
  42
  43 /*
  44  * chip addresses on I2C bus
  45  */
  46 #define AK4114_ADDR             0x20            /* S/PDIF receiver */
  47 #define AK4358_ADDR             0x22            /* DAC */
  48
  49 /*
  50  * Juli does not use the standard ICE1724 clock scheme. Juli's ice1724 chip is
  51  * supplied by external clock provided by Xilinx array and MK73-1 PLL frequency
  52  * multiplier. Actual frequency is set by ice1724 GPIOs hooked to the Xilinx.
  53  *
  54  * The clock circuitry is supplied by the two ice1724 crystals. This
  55  * arrangement allows to generate independent clock signal for AK4114's input
  56  * rate detection circuit. As a result, Juli, unlike most other
  57  * ice1724+ak4114-based cards, detects spdif input rate correctly.
  58  * This fact is applied in the driver, allowing to modify PCM stream rate
  59  * parameter according to the actual input rate.
  60  *
  61  * Juli uses the remaining three stereo-channels of its DAC to optionally
  62  * monitor analog input, digital input, and digital output. The corresponding
  63  * I2S signals are routed by Xilinx, controlled by GPIOs.
  64  *
  65  * The master mute is implemented using output muting transistors (GPIO) in
  66  * combination with smuting the DAC.
  67  *
  68  * The card itself has no HW master volume control, implemented using the
  69  * vmaster control.
  70  *
  71  * TODO:
  72  * researching and fixing the input monitors
  73  */
  74
  75 /*
  76  * GPIO pins
  77  */
  78 #define GPIO_FREQ_MASK          (3<<0)
  79 #define GPIO_FREQ_32KHZ         (0<<0)
  80 #define GPIO_FREQ_44KHZ         (1<<0)
  81 #define GPIO_FREQ_48KHZ         (2<<0)
  82 #define GPIO_MULTI_MASK         (3<<2)
  83 #define GPIO_MULTI_4X           (0<<2)
  84 #define GPIO_MULTI_2X           (1<<2)
  85 #define GPIO_MULTI_1X           (2<<2)          /* also external */
  86 #define GPIO_MULTI_HALF         (3<<2)
  87 #define GPIO_INTERNAL_CLOCK     (1<<4)          /* 0 = external, 1 = internal */
  88 #define GPIO_CLOCK_MASK         (1<<4)
  89 #define GPIO_ANALOG_PRESENT     (1<<5)          /* RO only: 0 = present */
  90 #define GPIO_RXMCLK_SEL         (1<<7)          /* must be 0 */
  91 #define GPIO_AK5385A_CKS0       (1<<8)
  92 #define GPIO_AK5385A_DFS1       (1<<9)
  93 #define GPIO_AK5385A_DFS0       (1<<10)
  94 #define GPIO_DIGOUT_MONITOR     (1<<11)         /* 1 = active */
  95 #define GPIO_DIGIN_MONITOR      (1<<12)         /* 1 = active */
  96 #define GPIO_ANAIN_MONITOR      (1<<13)         /* 1 = active */
  97 #define GPIO_AK5385A_CKS1       (1<<14)         /* must be 0 */
  98 #define GPIO_MUTE_CONTROL       (1<<15)         /* output mute, 1 = muted */
  99
 100 #define GPIO_RATE_MASK          (GPIO_FREQ_MASK | GPIO_MULTI_MASK | \
 101                 GPIO_CLOCK_MASK)
 102 #define GPIO_AK5385A_MASK       (GPIO_AK5385A_CKS0 | GPIO_AK5385A_DFS0 | \
 103                 GPIO_AK5385A_DFS1 | GPIO_AK5385A_CKS1)
 104
 105 #define JULI_PCM_RATE   (SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
 106                 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
 107                 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_64000 | \
 108                 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 | \
 109                 SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000)
 110
 111 #define GPIO_RATE_16000         (GPIO_FREQ_32KHZ | GPIO_MULTI_HALF | \
 112                 GPIO_INTERNAL_CLOCK)
 113 #define GPIO_RATE_22050         (GPIO_FREQ_44KHZ | GPIO_MULTI_HALF | \
 114                 GPIO_INTERNAL_CLOCK)
 115 #define GPIO_RATE_24000         (GPIO_FREQ_48KHZ | GPIO_MULTI_HALF | \
 116                 GPIO_INTERNAL_CLOCK)
 117 #define GPIO_RATE_32000         (GPIO_FREQ_32KHZ | GPIO_MULTI_1X | \
 118                 GPIO_INTERNAL_CLOCK)
 119 #define GPIO_RATE_44100         (GPIO_FREQ_44KHZ | GPIO_MULTI_1X | \
 120                 GPIO_INTERNAL_CLOCK)
 121 #define GPIO_RATE_48000         (GPIO_FREQ_48KHZ | GPIO_MULTI_1X | \
 122                 GPIO_INTERNAL_CLOCK)
 123 #define GPIO_RATE_64000         (GPIO_FREQ_32KHZ | GPIO_MULTI_2X | \
 124                 GPIO_INTERNAL_CLOCK)
 125 #define GPIO_RATE_88200         (GPIO_FREQ_44KHZ | GPIO_MULTI_2X | \
 126                 GPIO_INTERNAL_CLOCK)
 127 #define GPIO_RATE_96000         (GPIO_FREQ_48KHZ | GPIO_MULTI_2X | \
 128                 GPIO_INTERNAL_CLOCK)
 129 #define GPIO_RATE_176400        (GPIO_FREQ_44KHZ | GPIO_MULTI_4X | \
 130                 GPIO_INTERNAL_CLOCK)
 131 #define GPIO_RATE_192000        (GPIO_FREQ_48KHZ | GPIO_MULTI_4X | \
 132                 GPIO_INTERNAL_CLOCK)
 133
 134 /*
 135  * Initial setup of the conversion array GPIO <-> rate
 136  */
 137 static unsigned int juli_rates[] = {
 138         16000, 22050, 24000, 32000,
 139         44100, 48000, 64000, 88200,
 140         96000, 176400, 192000,
 141 };
 142
 143 static unsigned int gpio_vals[] = {
 144         GPIO_RATE_16000, GPIO_RATE_22050, GPIO_RATE_24000, GPIO_RATE_32000,
 145         GPIO_RATE_44100, GPIO_RATE_48000, GPIO_RATE_64000, GPIO_RATE_88200,
 146         GPIO_RATE_96000, GPIO_RATE_176400, GPIO_RATE_192000,
 147 };
 148
 149 static struct snd_pcm_hw_constraint_list juli_rates_info = {
 150         .count = ARRAY_SIZE(juli_rates),
 151         .list = juli_rates,
 152         .mask = 0,
 153 };
 154
 155 static int get_gpio_val(int rate)
 156 {
 157         int i;
 158         for (i = 0; i < ARRAY_SIZE(juli_rates); i++)
 159                 if (juli_rates[i] == rate)
 160                         return gpio_vals[i];
 161         return 0;
 162 }
 163
 164 static void juli_ak4114_write(void *private_data, unsigned char reg,
 165                                 unsigned char val)
 166 {
 167         snd_vt1724_write_i2c((struct snd_ice1712 *)private_data, AK4114_ADDR,
 168                                 reg, val);
 169 }
 170
 171 static unsigned char juli_ak4114_read(void *private_data, unsigned char reg)
 172 {
 173         return snd_vt1724_read_i2c((struct snd_ice1712 *)private_data,
 174                                         AK4114_ADDR, reg);
 175 }
 176
 177 /*
 178  * If SPDIF capture and slaved to SPDIF-IN, setting runtime rate
 179  * to the external rate
 180  */
 181 static void juli_spdif_in_open(struct snd_ice1712 *ice,
 182                                 struct snd_pcm_substream *substream)
 183 {
 184         struct juli_spec *spec = ice->spec;
 185         struct snd_pcm_runtime *runtime = substream->runtime;
 186         int rate;
 187
 188         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK ||
 189                         !ice->is_spdif_master(ice))
 190                 return;
 191         rate = snd_ak4114_external_rate(spec->ak4114);
 192         if (rate >= runtime->hw.rate_min && rate <= runtime->hw.rate_max) {
 193                 runtime->hw.rate_min = rate;
 194                 runtime->hw.rate_max = rate;
 195         }
 196 }
 197
 198 /*
 199  * AK4358 section
 200  */
 201
 202 static void juli_akm_lock(struct snd_akm4xxx *ak, int chip)
 203 {
 204 }
 205
 206 static void juli_akm_unlock(struct snd_akm4xxx *ak, int chip)
 207 {
 208 }
 209
 210 static void juli_akm_write(struct snd_akm4xxx *ak, int chip,
 211                            unsigned char addr, unsigned char data)
 212 {
 213         struct snd_ice1712 *ice = ak->private_data[0];
 214
 215         if (snd_BUG_ON(chip))
 216                 return;
 217         snd_vt1724_write_i2c(ice, AK4358_ADDR, addr, data);
 218 }
 219
 220 /*
 221  * change the rate of envy24HT, AK4358, AK5385
 222  */
 223 static void juli_akm_set_rate_val(struct snd_akm4xxx *ak, unsigned int rate)
 224 {
 225         unsigned char old, tmp, ak4358_dfs;
 226         unsigned int ak5385_pins, old_gpio, new_gpio;
 227         struct snd_ice1712 *ice = ak->private_data[0];
 228         struct juli_spec *spec = ice->spec;
 229
 230         if (rate == 0)  /* no hint - S/PDIF input is master or the new spdif
 231                            input rate undetected, simply return */
 232                 return;
 233
 234         /* adjust DFS on codecs */
 235         if (rate > 96000)  {
 236                 ak4358_dfs = 2;
 237                 ak5385_pins = GPIO_AK5385A_DFS1 | GPIO_AK5385A_CKS0;
 238         } else if (rate > 48000) {
 239                 ak4358_dfs = 1;
 240                 ak5385_pins = GPIO_AK5385A_DFS0;
 241         } else {
 242                 ak4358_dfs = 0;
 243                 ak5385_pins = 0;
 244         }
 245         /* AK5385 first, since it requires cold reset affecting both codecs */
 246         old_gpio = ice->gpio.get_data(ice);
 247         new_gpio =  (old_gpio & ~GPIO_AK5385A_MASK) | ak5385_pins;
 248         /* printk(KERN_DEBUG "JULI - ak5385 set_rate_val: new gpio 0x%x\n",
 249                 new_gpio); */
 250         ice->gpio.set_data(ice, new_gpio);
 251
 252         /* cold reset */
 253         old = inb(ICEMT1724(ice, AC97_CMD));
 254         outb(old | VT1724_AC97_COLD, ICEMT1724(ice, AC97_CMD));
 255         udelay(1);
 256         outb(old & ~VT1724_AC97_COLD, ICEMT1724(ice, AC97_CMD));
 257
 258         /* AK4358 */
 259         /* set new value, reset DFS */
 260         tmp = snd_akm4xxx_get(ak, 0, 2);
 261         snd_akm4xxx_reset(ak, 1);
 262         tmp = snd_akm4xxx_get(ak, 0, 2);
 263         tmp &= ~(0x03 << 4);
 264         tmp |= ak4358_dfs << 4;
 265         snd_akm4xxx_set(ak, 0, 2, tmp);
 266         snd_akm4xxx_reset(ak, 0);
 267
 268         /* reinit ak4114 */
 269         snd_ak4114_reinit(spec->ak4114);
 270 }
 271
 272 #define AK_DAC(xname, xch)      { .name = xname, .num_channels = xch }
 273 #define PCM_VOLUME              "PCM Playback Volume"
 274 #define MONITOR_AN_IN_VOLUME    "Monitor Analog In Volume"
 275 #define MONITOR_DIG_IN_VOLUME   "Monitor Digital In Volume"
 276 #define MONITOR_DIG_OUT_VOLUME  "Monitor Digital Out Volume"
 277
 278 static const struct snd_akm4xxx_dac_channel juli_dac[] = {
 279         AK_DAC(PCM_VOLUME, 2),
 280         AK_DAC(MONITOR_AN_IN_VOLUME, 2),
 281         AK_DAC(MONITOR_DIG_OUT_VOLUME, 2),
 282         AK_DAC(MONITOR_DIG_IN_VOLUME, 2),
 283 };
 284
 285
 286 static struct snd_akm4xxx akm_juli_dac __devinitdata = {
 287         .type = SND_AK4358,
 288         .num_dacs = 8,  /* DAC1 - analog out
 289                            DAC2 - analog in monitor
 290                            DAC3 - digital out monitor
 291                            DAC4 - digital in monitor
 292                          */
 293         .ops = {
 294                 .lock = juli_akm_lock,
 295                 .unlock = juli_akm_unlock,
 296                 .write = juli_akm_write,
 297                 .set_rate_val = juli_akm_set_rate_val
 298         },
 299         .dac_info = juli_dac,
 300 };
 301
 302 #define juli_mute_info          snd_ctl_boolean_mono_info
 303
 304 static int juli_mute_get(struct snd_kcontrol *kcontrol,
 305                 struct snd_ctl_elem_value *ucontrol)
 306 {
 307         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 308         unsigned int val;
 309         val = ice->gpio.get_data(ice) & (unsigned int) kcontrol->private_value;
 310         if (kcontrol->private_value == GPIO_MUTE_CONTROL)
 311                 /* val 0 = signal on */
 312                 ucontrol->value.integer.value[0] = (val) ? 0 : 1;
 313         else
 314                 /* val 1 = signal on */
 315                 ucontrol->value.integer.value[0] = (val) ? 1 : 0;
 316         return 0;
 317 }
 318
 319 static int juli_mute_put(struct snd_kcontrol *kcontrol,
 320                 struct snd_ctl_elem_value *ucontrol)
 321 {
 322         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 323         unsigned int old_gpio, new_gpio;
 324         old_gpio = ice->gpio.get_data(ice);
 325         if (ucontrol->value.integer.value[0]) {
 326                 /* unmute */
 327                 if (kcontrol->private_value == GPIO_MUTE_CONTROL) {
 328                         /* 0 = signal on */
 329                         new_gpio = old_gpio & ~GPIO_MUTE_CONTROL;
 330                         /* un-smuting DAC */
 331                         snd_akm4xxx_write(ice->akm, 0, 0x01, 0x01);
 332                 } else
 333                         /* 1 = signal on */
 334                         new_gpio =  old_gpio |
 335                                 (unsigned int) kcontrol->private_value;
 336         } else {
 337                 /* mute */
 338                 if (kcontrol->private_value == GPIO_MUTE_CONTROL) {
 339                         /* 1 = signal off */
 340                         new_gpio = old_gpio | GPIO_MUTE_CONTROL;
 341                         /* smuting DAC */
 342                         snd_akm4xxx_write(ice->akm, 0, 0x01, 0x03);
 343                 } else
 344                         /* 0 = signal off */
 345                         new_gpio =  old_gpio &
 346                                 ~((unsigned int) kcontrol->private_value);
 347         }
 348         /* printk(KERN_DEBUG
 349                 "JULI - mute/unmute: control_value: 0x%x, old_gpio: 0x%x, "
 350                 "new_gpio 0x%x\n",
 351                 (unsigned int)ucontrol->value.integer.value[0], old_gpio,
 352                 new_gpio); */
 353         if (old_gpio != new_gpio) {
 354                 ice->gpio.set_data(ice, new_gpio);
 355                 return 1;
 356         }
 357         /* no change */
 358         return 0;
 359 }
 360
 361 static struct snd_kcontrol_new juli_mute_controls[] __devinitdata = {
 362         {
 363                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 364                 .name = "Master Playback Switch",
 365                 .info = juli_mute_info,
 366                 .get = juli_mute_get,
 367                 .put = juli_mute_put,
 368                 .private_value = GPIO_MUTE_CONTROL,
 369         },
 370         /* Although the following functionality respects the succint NDA'd
 371          * documentation from the card manufacturer, and the same way of
 372          * operation is coded in OSS Juli driver, only Digital Out monitor
 373          * seems to work. Surprisingly, Analog input monitor outputs Digital
 374          * output data. The two are independent, as enabling both doubles
 375          * volume of the monitor sound.
 376          *
 377          * Checking traces on the board suggests the functionality described
 378          * by the manufacturer is correct - I2S from ADC and AK4114
 379          * go to ICE as well as to Xilinx, I2S inputs of DAC2,3,4 (the monitor
 380          * inputs) are fed from Xilinx.
 381          *
 382          * I even checked traces on board and coded a support in driver for
 383          * an alternative possiblity - the unused I2S ICE output channels
 384          * switched to HW-IN/SPDIF-IN and providing the monitoring signal to
 385          * the DAC - to no avail. The I2S outputs seem to be unconnected.
 386          *
 387          * The windows driver supports the monitoring correctly.
 388          */
 389         {
 390                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 391                 .name = "Monitor Analog In Switch",
 392                 .info = juli_mute_info,
 393                 .get = juli_mute_get,
 394                 .put = juli_mute_put,
 395                 .private_value = GPIO_ANAIN_MONITOR,
 396         },
 397         {
 398                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 399                 .name = "Monitor Digital Out Switch",
 400                 .info = juli_mute_info,
 401                 .get = juli_mute_get,
 402                 .put = juli_mute_put,
 403                 .private_value = GPIO_DIGOUT_MONITOR,
 404         },
 405         {
 406                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 407                 .name = "Monitor Digital In Switch",
 408                 .info = juli_mute_info,
 409                 .get = juli_mute_get,
 410                 .put = juli_mute_put,
 411                 .private_value = GPIO_DIGIN_MONITOR,
 412         },
 413 };
 414
 415
 416 static void ak4358_proc_regs_read(struct snd_info_entry *entry,
 417                 struct snd_info_buffer *buffer)
 418 {
 419         struct snd_ice1712 *ice = (struct snd_ice1712 *)entry->private_data;
 420         int reg, val;
 421         for (reg = 0; reg <= 0xf; reg++) {
 422                 val =  snd_akm4xxx_get(ice->akm, 0, reg);
 423                 snd_iprintf(buffer, "0x%02x = 0x%02x\n", reg, val);
 424         }
 425 }
 426
 427 static void ak4358_proc_init(struct snd_ice1712 *ice)
 428 {
 429         struct snd_info_entry *entry;
 430         if (!snd_card_proc_new(ice->card, "ak4358_codec", &entry))
 431                 snd_info_set_text_ops(entry, ice, ak4358_proc_regs_read);
 432 }
 433
 434 static char *slave_vols[] __devinitdata = {
 435         PCM_VOLUME,
 436         MONITOR_AN_IN_VOLUME,
 437         MONITOR_DIG_IN_VOLUME,
 438         MONITOR_DIG_OUT_VOLUME,
 439         NULL
 440 };
 441
 442 static __devinitdata
 443 DECLARE_TLV_DB_SCALE(juli_master_db_scale, -6350, 50, 1);
 444
 445 static struct snd_kcontrol __devinit *ctl_find(struct snd_card *card,
 446                 const char *name)
 447 {
 448         struct snd_ctl_elem_id sid;
 449         memset(&sid, 0, sizeof(sid));
 450         /* FIXME: strcpy is bad. */
 451         strcpy(sid.name, name);
 452         sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 453         return snd_ctl_find_id(card, &sid);
 454 }
 455
 456 static void __devinit add_slaves(struct snd_card *card,
 457                                  struct snd_kcontrol *master, char **list)
 458 {
 459         for (; *list; list++) {
 460                 struct snd_kcontrol *slave = ctl_find(card, *list);
 461                 /* printk(KERN_DEBUG "add_slaves - %s\n", *list); */
 462                 if (slave) {
 463                         /* printk(KERN_DEBUG "slave %s found\n", *list); */
 464                         snd_ctl_add_slave(master, slave);
 465                 }
 466         }
 467 }
 468
 469 static int __devinit juli_add_controls(struct snd_ice1712 *ice)
 470 {
 471         struct juli_spec *spec = ice->spec;
 472         int err;
 473         unsigned int i;
 474         struct snd_kcontrol *vmaster;
 475
 476         err = snd_ice1712_akm4xxx_build_controls(ice);
 477         if (err < 0)
 478                 return err;
 479
 480         for (i = 0; i < ARRAY_SIZE(juli_mute_controls); i++) {
 481                 err = snd_ctl_add(ice->card,
 482                                 snd_ctl_new1(&juli_mute_controls[i], ice));
 483                 if (err < 0)
 484                         return err;
 485         }
 486         /* Create virtual master control */
 487         vmaster = snd_ctl_make_virtual_master("Master Playback Volume",
 488                                               juli_master_db_scale);
 489         if (!vmaster)
 490                 return -ENOMEM;
 491         add_slaves(ice->card, vmaster, slave_vols);
 492         err = snd_ctl_add(ice->card, vmaster);
 493         if (err < 0)
 494                 return err;
 495
 496         /* only capture SPDIF over AK4114 */
 497         err = snd_ak4114_build(spec->ak4114, NULL,
 498                         ice->pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
 499
 500         ak4358_proc_init(ice);
 501         if (err < 0)
 502                 return err;
 503         return 0;
 504 }
 505
 506 /*
 507  * initialize the chip
 508  */
 509
 510 static inline int juli_is_spdif_master(struct snd_ice1712 *ice)
 511 {
 512         return (ice->gpio.get_data(ice) & GPIO_INTERNAL_CLOCK) ? 0 : 1;
 513 }
 514
 515 static unsigned int juli_get_rate(struct snd_ice1712 *ice)
 516 {
 517         int i;
 518         unsigned char result;
 519
 520         result =  ice->gpio.get_data(ice) & GPIO_RATE_MASK;
 521         for (i = 0; i < ARRAY_SIZE(gpio_vals); i++)
 522                 if (gpio_vals[i] == result)
 523                         return juli_rates[i];
 524         return 0;
 525 }
 526
 527 /* setting new rate */
 528 static void juli_set_rate(struct snd_ice1712 *ice, unsigned int rate)
 529 {
 530         unsigned int old, new;
 531         unsigned char val;
 532
 533         old = ice->gpio.get_data(ice);
 534         new =  (old & ~GPIO_RATE_MASK) | get_gpio_val(rate);
 535         /* printk(KERN_DEBUG "JULI - set_rate: old %x, new %x\n",
 536                         old & GPIO_RATE_MASK,
 537                         new & GPIO_RATE_MASK); */
 538
 539         ice->gpio.set_data(ice, new);
 540         /* switching to external clock - supplied by external circuits */
 541         val = inb(ICEMT1724(ice, RATE));
 542         outb(val | VT1724_SPDIF_MASTER, ICEMT1724(ice, RATE));
 543 }
 544
 545 static inline unsigned char juli_set_mclk(struct snd_ice1712 *ice,
 546                                           unsigned int rate)
 547 {
 548         /* no change in master clock */
 549         return 0;
 550 }
 551
 552 /* setting clock to external - SPDIF */
 553 static void juli_set_spdif_clock(struct snd_ice1712 *ice)
 554 {
 555         unsigned int old;
 556         old = ice->gpio.get_data(ice);
 557         /* external clock (= 0), multiply 1x, 48kHz */
 558         ice->gpio.set_data(ice, (old & ~GPIO_RATE_MASK) | GPIO_MULTI_1X |
 559                         GPIO_FREQ_48KHZ);
 560 }
 561
 562 /* Called when ak4114 detects change in the input SPDIF stream */
 563 static void juli_ak4114_change(struct ak4114 *ak4114, unsigned char c0,
 564                                unsigned char c1)
 565 {
 566         struct snd_ice1712 *ice = ak4114->change_callback_private;
 567         int rate;
 568         if (ice->is_spdif_master(ice) && c1) {
 569                 /* only for SPDIF master mode, rate was changed */
 570                 rate = snd_ak4114_external_rate(ak4114);
 571                 /* printk(KERN_DEBUG "ak4114 - input rate changed to %d\n",
 572                                 rate); */
 573                 juli_akm_set_rate_val(ice->akm, rate);
 574         }
 575 }
 576
 577 static int __devinit juli_init(struct snd_ice1712 *ice)
 578 {
 579         static const unsigned char ak4114_init_vals[] = {
 580                 /* AK4117_REG_PWRDN */  AK4114_RST | AK4114_PWN |
 581                                         AK4114_OCKS0 | AK4114_OCKS1,
 582                 /* AK4114_REQ_FORMAT */ AK4114_DIF_I24I2S,
 583                 /* AK4114_REG_IO0 */    AK4114_TX1E,
 584                 /* AK4114_REG_IO1 */    AK4114_EFH_1024 | AK4114_DIT |
 585                                         AK4114_IPS(1),
 586                 /* AK4114_REG_INT0_MASK */ 0,
 587                 /* AK4114_REG_INT1_MASK */ 0
 588         };
 589         static const unsigned char ak4114_init_txcsb[] = {
 590                 0x41, 0x02, 0x2c, 0x00, 0x00
 591         };
 592         int err;
 593         struct juli_spec *spec;
 594         struct snd_akm4xxx *ak;
 595
 596         spec = kzalloc(sizeof(*spec), GFP_KERNEL);
 597         if (!spec)
 598                 return -ENOMEM;
 599         ice->spec = spec;
 600
 601         err = snd_ak4114_create(ice->card,
 602                                 juli_ak4114_read,
 603                                 juli_ak4114_write,
 604                                 ak4114_init_vals, ak4114_init_txcsb,
 605                                 ice, &spec->ak4114);
 606         if (err < 0)
 607                 return err;
 608         /* callback for codecs rate setting */
 609         spec->ak4114->change_callback = juli_ak4114_change;
 610         spec->ak4114->change_callback_private = ice;
 611         /* AK4114 in Juli can detect external rate correctly */
 612         spec->ak4114->check_flags = 0;
 613
 614 #if 0
 615 /*
 616  * it seems that the analog doughter board detection does not work reliably, so
 617  * force the analog flag; it should be very rare (if ever) to come at Juli@
 618  * used without the analog daughter board
 619  */
 620         spec->analog = (ice->gpio.get_data(ice) & GPIO_ANALOG_PRESENT) ? 0 : 1;
 621 #else
 622         spec->analog = 1;
 623 #endif
 624
 625         if (spec->analog) {
 626                 printk(KERN_INFO "juli@: analog I/O detected\n");
 627                 ice->num_total_dacs = 2;
 628                 ice->num_total_adcs = 2;
 629
 630                 ice->akm = kzalloc(sizeof(struct snd_akm4xxx), GFP_KERNEL);
 631                 ak = ice->akm;
 632                 if (!ak)
 633                         return -ENOMEM;
 634                 ice->akm_codecs = 1;
 635                 err = snd_ice1712_akm4xxx_init(ak, &akm_juli_dac, NULL, ice);
 636                 if (err < 0)
 637                         return err;
 638         }
 639
 640         /* juli is clocked by Xilinx array */
 641         ice->hw_rates = &juli_rates_info;
 642         ice->is_spdif_master = juli_is_spdif_master;
 643         ice->get_rate = juli_get_rate;
 644         ice->set_rate = juli_set_rate;
 645         ice->set_mclk = juli_set_mclk;
 646         ice->set_spdif_clock = juli_set_spdif_clock;
 647
 648         ice->spdif.ops.open = juli_spdif_in_open;
 649         return 0;
 650 }
 651
 652
 653 /*
 654  * Juli@ boards don't provide the EEPROM data except for the vendor IDs.
 655  * hence the driver needs to sets up it properly.
 656  */
 657
 658 static unsigned char juli_eeprom[] __devinitdata = {
 659         [ICE_EEP2_SYSCONF]     = 0x2b,  /* clock 512, mpu401, 1xADC, 1xDACs,
 660                                            SPDIF in */
 661         [ICE_EEP2_ACLINK]      = 0x80,  /* I2S */
 662         [ICE_EEP2_I2S]         = 0xf8,  /* vol, 96k, 24bit, 192k */
 663         [ICE_EEP2_SPDIF]       = 0xc3,  /* out-en, out-int, spdif-in */
 664         [ICE_EEP2_GPIO_DIR]    = 0x9f,  /* 5, 6:inputs; 7, 4-0 outputs*/
 665         [ICE_EEP2_GPIO_DIR1]   = 0xff,
 666         [ICE_EEP2_GPIO_DIR2]   = 0x7f,
 667         [ICE_EEP2_GPIO_MASK]   = 0x60,  /* 5, 6: locked; 7, 4-0 writable */
 668         [ICE_EEP2_GPIO_MASK1]  = 0x00,  /* 0-7 writable */
 669         [ICE_EEP2_GPIO_MASK2]  = 0x7f,
 670         [ICE_EEP2_GPIO_STATE]  = GPIO_FREQ_48KHZ | GPIO_MULTI_1X |
 671                GPIO_INTERNAL_CLOCK,     /* internal clock, multiple 1x, 48kHz*/
 672         [ICE_EEP2_GPIO_STATE1] = 0x00,  /* unmuted */
 673         [ICE_EEP2_GPIO_STATE2] = 0x00,
 674 };
 675
 676 /* entry point */
 677 struct snd_ice1712_card_info snd_vt1724_juli_cards[] __devinitdata = {
 678         {
 679                 .subvendor = VT1724_SUBDEVICE_JULI,
 680                 .name = "ESI Juli@",
 681                 .model = "juli",
 682                 .chip_init = juli_init,
 683                 .build_controls = juli_add_controls,
 684                 .eeprom_size = sizeof(juli_eeprom),
 685                 .eeprom_data = juli_eeprom,
 686         },
 687         { } /* terminator */
 688 };