summaryrefslogtreecommitdiff
path: root/sound/pci/ice1712/juli.c
blob: 5bb146703738a4a6f61d51d2e219da801afe59e2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
/*
 *   ALSA driver for ICEnsemble VT1724 (Envy24HT)
 *
 *   Lowlevel functions for ESI Juli@ cards
 *
 *	Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz>
 *	              2008 Pavel Hofman <dustin@seznam.cz>
 *
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/tlv.h>

#include "ice1712.h"
#include "envy24ht.h"
#include "juli.h"

struct juli_spec {
	struct ak4114 *ak4114;
	unsigned int analog:1;
};

/*
 * chip addresses on I2C bus
 */
#define AK4114_ADDR		0x20		/* S/PDIF receiver */
#define AK4358_ADDR		0x22		/* DAC */

/*
 * Juli does not use the standard ICE1724 clock scheme. Juli's ice1724 chip is
 * supplied by external clock provided by Xilinx array and MK73-1 PLL frequency
 * multiplier. Actual frequency is set by ice1724 GPIOs hooked to the Xilinx.
 *
 * The clock circuitry is supplied by the two ice1724 crystals. This
 * arrangement allows to generate independent clock signal for AK4114's input
 * rate detection circuit. As a result, Juli, unlike most other
 * ice1724+ak4114-based cards, detects spdif input rate correctly.
 * This fact is applied in the driver, allowing to modify PCM stream rate
 * parameter according to the actual input rate.
 *
 * Juli uses the remaining three stereo-channels of its DAC to optionally
 * monitor analog input, digital input, and digital output. The corresponding
 * I2S signals are routed by Xilinx, controlled by GPIOs.
 *
 * The master mute is implemented using output muting transistors (GPIO) in
 * combination with smuting the DAC.
 *
 * The card itself has no HW master volume control, implemented using the
 * vmaster control.
 *
 * TODO:
 * researching and fixing the input monitors
 */

/*
 * GPIO pins
 */
#define GPIO_FREQ_MASK		(3<<0)
#define GPIO_FREQ_32KHZ		(0<<0)
#define GPIO_FREQ_44KHZ		(1<<0)
#define GPIO_FREQ_48KHZ		(2<<0)
#define GPIO_MULTI_MASK		(3<<2)
#define GPIO_MULTI_4X		(0<<2)
#define GPIO_MULTI_2X		(1<<2)
#define GPIO_MULTI_1X		(2<<2)		/* also external */
#define GPIO_MULTI_HALF		(3<<2)
#define GPIO_INTERNAL_CLOCK	(1<<4)		/* 0 = external, 1 = internal */
#define GPIO_CLOCK_MASK		(1<<4)
#define GPIO_ANALOG_PRESENT	(1<<5)		/* RO only: 0 = present */
#define GPIO_RXMCLK_SEL		(1<<7)		/* must be 0 */
#define GPIO_AK5385A_CKS0	(1<<8)
#define GPIO_AK5385A_DFS1	(1<<9)
#define GPIO_AK5385A_DFS0	(1<<10)
#define GPIO_DIGOUT_MONITOR	(1<<11)		/* 1 = active */
#define GPIO_DIGIN_MONITOR	(1<<12)		/* 1 = active */
#define GPIO_ANAIN_MONITOR	(1<<13)		/* 1 = active */
#define GPIO_AK5385A_CKS1	(1<<14)		/* must be 0 */
#define GPIO_MUTE_CONTROL	(1<<15)		/* output mute, 1 = muted */

#define GPIO_RATE_MASK		(GPIO_FREQ_MASK | GPIO_MULTI_MASK | \
		GPIO_CLOCK_MASK)
#define GPIO_AK5385A_MASK	(GPIO_AK5385A_CKS0 | GPIO_AK5385A_DFS0 | \
		GPIO_AK5385A_DFS1 | GPIO_AK5385A_CKS1)

#define JULI_PCM_RATE	(SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
		SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
		SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_64000 | \
		SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 | \
		SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000)

#define GPIO_RATE_16000		(GPIO_FREQ_32KHZ | GPIO_MULTI_HALF | \
		GPIO_INTERNAL_CLOCK)
#define GPIO_RATE_22050		(GPIO_FREQ_44KHZ | GPIO_MULTI_HALF | \
		GPIO_INTERNAL_CLOCK)
#define GPIO_RATE_24000		(GPIO_FREQ_48KHZ | GPIO_MULTI_HALF | \
		GPIO_INTERNAL_CLOCK)
#define GPIO_RATE_32000		(GPIO_FREQ_32KHZ | GPIO_MULTI_1X | \
		GPIO_INTERNAL_CLOCK)
#define GPIO_RATE_44100		(GPIO_FREQ_44KHZ | GPIO_MULTI_1X | \
		GPIO_INTERNAL_CLOCK)
#define GPIO_RATE_48000		(GPIO_FREQ_48KHZ | GPIO_MULTI_1X | \
		GPIO_INTERNAL_CLOCK)
#define GPIO_RATE_64000		(GPIO_FREQ_32KHZ | GPIO_MULTI_2X | \
		GPIO_INTERNAL_CLOCK)
#define GPIO_RATE_88200		(GPIO_FREQ_44KHZ | GPIO_MULTI_2X | \
		GPIO_INTERNAL_CLOCK)
#define GPIO_RATE_96000		(GPIO_FREQ_48KHZ | GPIO_MULTI_2X | \
		GPIO_INTERNAL_CLOCK)
#define GPIO_RATE_176400	(GPIO_FREQ_44KHZ | GPIO_MULTI_4X | \
		GPIO_INTERNAL_CLOCK)
#define GPIO_RATE_192000	(GPIO_FREQ_48KHZ | GPIO_MULTI_4X | \
		GPIO_INTERNAL_CLOCK)

/*
 * Initial setup of the conversion array GPIO <-> rate
 */
static const unsigned int juli_rates[] = {
	16000, 22050, 24000, 32000,
	44100, 48000, 64000, 88200,
	96000, 176400, 192000,
};

static const unsigned int gpio_vals[] = {
	GPIO_RATE_16000, GPIO_RATE_22050, GPIO_RATE_24000, GPIO_RATE_32000,
	GPIO_RATE_44100, GPIO_RATE_48000, GPIO_RATE_64000, GPIO_RATE_88200,
	GPIO_RATE_96000, GPIO_RATE_176400, GPIO_RATE_192000,
};

static const struct snd_pcm_hw_constraint_list juli_rates_info = {
	.count = ARRAY_SIZE(juli_rates),
	.list = juli_rates,
	.mask = 0,
};

static int get_gpio_val(int rate)
{
	int i;
	for (i = 0; i < ARRAY_SIZE(juli_rates); i++)
		if (juli_rates[i] == rate)
			return gpio_vals[i];
	return 0;
}

static void juli_ak4114_write(void *private_data, unsigned char reg,
				unsigned char val)
{
	snd_vt1724_write_i2c((struct snd_ice1712 *)private_data, AK4114_ADDR,
				reg, val);
}

static unsigned char juli_ak4114_read(void *private_data, unsigned char reg)
{
	return snd_vt1724_read_i2c((struct snd_ice1712 *)private_data,
					AK4114_ADDR, reg);
}

/*
 * If SPDIF capture and slaved to SPDIF-IN, setting runtime rate
 * to the external rate
 */
static void juli_spdif_in_open(struct snd_ice1712 *ice,
				struct snd_pcm_substream *substream)
{
	struct juli_spec *spec = ice->spec;
	struct snd_pcm_runtime *runtime = substream->runtime;
	int rate;

	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK ||
			!ice->is_spdif_master(ice))
		return;
	rate = snd_ak4114_external_rate(spec->ak4114);
	if (rate >= runtime->hw.rate_min && rate <= runtime->hw.rate_max) {
		runtime->hw.rate_min = rate;
		runtime->hw.rate_max = rate;
	}
}

/*
 * AK4358 section
 */

static void juli_akm_lock(struct snd_akm4xxx *ak, int chip)
{
}

static void juli_akm_unlock(struct snd_akm4xxx *ak, int chip)
{
}

static void juli_akm_write(struct snd_akm4xxx *ak, int chip,
			   unsigned char addr, unsigned char data)
{
	struct snd_ice1712 *ice = ak->private_data[0];
	 
	if (snd_BUG_ON(chip))
		return;
	snd_vt1724_write_i2c(ice, AK4358_ADDR, addr, data);
}

/*
 * change the rate of envy24HT, AK4358, AK5385
 */
static void juli_akm_set_rate_val(struct snd_akm4xxx *ak, unsigned int rate)
{
	unsigned char old, tmp, ak4358_dfs;
	unsigned int ak5385_pins, old_gpio, new_gpio;
	struct snd_ice1712 *ice = ak->private_data[0];
	struct juli_spec *spec = ice->spec;

	if (rate == 0)  /* no hint - S/PDIF input is master or the new spdif
			   input rate undetected, simply return */
		return;

	/* adjust DFS on codecs */
	if (rate > 96000)  {
		ak4358_dfs = 2;
		ak5385_pins = GPIO_AK5385A_DFS1 | GPIO_AK5385A_CKS0;
	} else if (rate > 48000) {
		ak4358_dfs = 1;
		ak5385_pins = GPIO_AK5385A_DFS0;
	} else {
		ak4358_dfs = 0;
		ak5385_pins = 0;
	}
	/* AK5385 first, since it requires cold reset affecting both codecs */
	old_gpio = ice->gpio.get_data(ice);
	new_gpio =  (old_gpio & ~GPIO_AK5385A_MASK) | ak5385_pins;
	/* dev_dbg(ice->card->dev, "JULI - ak5385 set_rate_val: new gpio 0x%x\n",
		new_gpio); */
	ice->gpio.set_data(ice, new_gpio);

	/* cold reset */
	old = inb(ICEMT1724(ice, AC97_CMD));
	outb(old | VT1724_AC97_COLD, ICEMT1724(ice, AC97_CMD));
	udelay(1);
	outb(old & ~VT1724_AC97_COLD, ICEMT1724(ice, AC97_CMD));

	/* AK4358 */
	/* set new value, reset DFS */
	tmp = snd_akm4xxx_get(ak, 0, 2);
	snd_akm4xxx_reset(ak, 1);
	tmp = snd_akm4xxx_get(ak, 0, 2);
	tmp &= ~(0x03 << 4);
	tmp |= ak4358_dfs << 4;
	snd_akm4xxx_set(ak, 0, 2, tmp);
	snd_akm4xxx_reset(ak, 0);

	/* reinit ak4114 */
	snd_ak4114_reinit(spec->ak4114);
}

#define AK_DAC(xname, xch)	{ .name = xname, .num_channels = xch }
#define PCM_VOLUME		"PCM Playback Volume"
#define MONITOR_AN_IN_VOLUME	"Monitor Analog In Volume"
#define MONITOR_DIG_IN_VOLUME	"Monitor Digital In Volume"
#define MONITOR_DIG_OUT_VOLUME	"Monitor Digital Out Volume"

static const struct snd_akm4xxx_dac_channel juli_dac[] = {
	AK_DAC(PCM_VOLUME, 2),
	AK_DAC(MONITOR_AN_IN_VOLUME, 2),
	AK_DAC(MONITOR_DIG_OUT_VOLUME, 2),
	AK_DAC(MONITOR_DIG_IN_VOLUME, 2),
};


static struct snd_akm4xxx akm_juli_dac = {
	.type = SND_AK4358,
	.num_dacs = 8,	/* DAC1 - analog out
			   DAC2 - analog in monitor
			   DAC3 - digital out monitor
			   DAC4 - digital in monitor
			 */
	.ops = {
		.lock = juli_akm_lock,
		.unlock = juli_akm_unlock,
		.write = juli_akm_write,
		.set_rate_val = juli_akm_set_rate_val
	},
	.dac_info = juli_dac,
};

#define juli_mute_info		snd_ctl_boolean_mono_info

static int juli_mute_get(struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned int val;
	val = ice->gpio.get_data(ice) & (unsigned int) kcontrol->private_value;
	if (kcontrol->private_value == GPIO_MUTE_CONTROL)
		/* val 0 = signal on */
		ucontrol->value.integer.value[0] = (val) ? 0 : 1;
	else
		/* val 1 = signal on */
		ucontrol->value.integer.value[0] = (val) ? 1 : 0;
	return 0;
}

static int juli_mute_put(struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned int old_gpio, new_gpio;
	old_gpio = ice->gpio.get_data(ice);
	if (ucontrol->value.integer.value[0]) {
		/* unmute */
		if (kcontrol->private_value == GPIO_MUTE_CONTROL) {
			/* 0 = signal on */
			new_gpio = old_gpio & ~GPIO_MUTE_CONTROL;
			/* un-smuting DAC */
			snd_akm4xxx_write(ice->akm, 0, 0x01, 0x01);
		} else
			/* 1 = signal on */
			new_gpio =  old_gpio |
				(unsigned int) kcontrol->private_value;
	} else {
		/* mute */
		if (kcontrol->private_value == GPIO_MUTE_CONTROL) {
			/* 1 = signal off */
			new_gpio = old_gpio | GPIO_MUTE_CONTROL;
			/* smuting DAC */
			snd_akm4xxx_write(ice->akm, 0, 0x01, 0x03);
		} else
			/* 0 = signal off */
			new_gpio =  old_gpio &
				~((unsigned int) kcontrol->private_value);
	}
	/* dev_dbg(ice->card->dev,
		"JULI - mute/unmute: control_value: 0x%x, old_gpio: 0x%x, "
		"new_gpio 0x%x\n",
		(unsigned int)ucontrol->value.integer.value[0], old_gpio,
		new_gpio); */
	if (old_gpio != new_gpio) {
		ice->gpio.set_data(ice, new_gpio);
		return 1;
	}
	/* no change */
	return 0;
}

static struct snd_kcontrol_new juli_mute_controls[] = {
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Master Playback Switch",
		.info = juli_mute_info,
		.get = juli_mute_get,
		.put = juli_mute_put,
		.private_value = GPIO_MUTE_CONTROL,
	},
	/* Although the following functionality respects the succint NDA'd
	 * documentation from the card manufacturer, and the same way of
	 * operation is coded in OSS Juli driver, only Digital Out monitor
	 * seems to work. Surprisingly, Analog input monitor outputs Digital
	 * output data. The two are independent, as enabling both doubles
	 * volume of the monitor sound.
	 *
	 * Checking traces on the board suggests the functionality described
	 * by the manufacturer is correct - I2S from ADC and AK4114
	 * go to ICE as well as to Xilinx, I2S inputs of DAC2,3,4 (the monitor
	 * inputs) are fed from Xilinx.
	 *
	 * I even checked traces on board and coded a support in driver for
	 * an alternative possibility - the unused I2S ICE output channels
	 * switched to HW-IN/SPDIF-IN and providing the monitoring signal to
	 * the DAC - to no avail. The I2S outputs seem to be unconnected.
	 *
	 * The windows driver supports the monitoring correctly.
	 */
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Monitor Analog In Switch",
		.info = juli_mute_info,
		.get = juli_mute_get,
		.put = juli_mute_put,
		.private_value = GPIO_ANAIN_MONITOR,
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Monitor Digital Out Switch",
		.info = juli_mute_info,
		.get = juli_mute_get,
		.put = juli_mute_put,
		.private_value = GPIO_DIGOUT_MONITOR,
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Monitor Digital In Switch",
		.info = juli_mute_info,
		.get = juli_mute_get,
		.put = juli_mute_put,
		.private_value = GPIO_DIGIN_MONITOR,
	},
};

static char *slave_vols[] = {
	PCM_VOLUME,
	MONITOR_AN_IN_VOLUME,
	MONITOR_DIG_IN_VOLUME,
	MONITOR_DIG_OUT_VOLUME,
	NULL
};

static
DECLARE_TLV_DB_SCALE(juli_master_db_scale, -6350, 50, 1);

static struct snd_kcontrol *ctl_find(struct snd_card *card,
				     const char *name)
{
	struct snd_ctl_elem_id sid;
	memset(&sid, 0, sizeof(sid));
	/* FIXME: strcpy is bad. */
	strcpy(sid.name, name);
	sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
	return snd_ctl_find_id(card, &sid);
}

static void add_slaves(struct snd_card *card,
		       struct snd_kcontrol *master,
		       char * const *list)
{
	for (; *list; list++) {
		struct snd_kcontrol *slave = ctl_find(card, *list);
		/* dev_dbg(card->dev, "add_slaves - %s\n", *list); */
		if (slave) {
			/* dev_dbg(card->dev, "slave %s found\n", *list); */
			snd_ctl_add_slave(master, slave);
		}
	}
}

static int juli_add_controls(struct snd_ice1712 *ice)
{
	struct juli_spec *spec = ice->spec;
	int err;
	unsigned int i;
	struct snd_kcontrol *vmaster;

	err = snd_ice1712_akm4xxx_build_controls(ice);
	if (err < 0)
		return err;

	for (i = 0; i < ARRAY_SIZE(juli_mute_controls); i++) {
		err = snd_ctl_add(ice->card,
				snd_ctl_new1(&juli_mute_controls[i], ice));
		if (err < 0)
			return err;
	}
	/* Create virtual master control */
	vmaster = snd_ctl_make_virtual_master("Master Playback Volume",
					      juli_master_db_scale);
	if (!vmaster)
		return -ENOMEM;
	add_slaves(ice->card, vmaster, slave_vols);
	err = snd_ctl_add(ice->card, vmaster);
	if (err < 0)
		return err;

	/* only capture SPDIF over AK4114 */
	return snd_ak4114_build(spec->ak4114, NULL,
			ice->pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
}

/*
 * suspend/resume
 * */

#ifdef CONFIG_PM_SLEEP
static int juli_resume(struct snd_ice1712 *ice)
{
	struct snd_akm4xxx *ak = ice->akm;
	struct juli_spec *spec = ice->spec;
	/* akm4358 un-reset, un-mute */
	snd_akm4xxx_reset(ak, 0);
	/* reinit ak4114 */
	snd_ak4114_resume(spec->ak4114);
	return 0;
}

static int juli_suspend(struct snd_ice1712 *ice)
{
	struct snd_akm4xxx *ak = ice->akm;
	struct juli_spec *spec = ice->spec;
	/* akm4358 reset and soft-mute */
	snd_akm4xxx_reset(ak, 1);
	snd_ak4114_suspend(spec->ak4114);
	return 0;
}
#endif

/*
 * initialize the chip
 */

static inline int juli_is_spdif_master(struct snd_ice1712 *ice)
{
	return (ice->gpio.get_data(ice) & GPIO_INTERNAL_CLOCK) ? 0 : 1;
}

static unsigned int juli_get_rate(struct snd_ice1712 *ice)
{
	int i;
	unsigned char result;

	result =  ice->gpio.get_data(ice) & GPIO_RATE_MASK;
	for (i = 0; i < ARRAY_SIZE(gpio_vals); i++)
		if (gpio_vals[i] == result)
			return juli_rates[i];
	return 0;
}

/* setting new rate */
static void juli_set_rate(struct snd_ice1712 *ice, unsigned int rate)
{
	unsigned int old, new;
	unsigned char val;

	old = ice->gpio.get_data(ice);
	new =  (old & ~GPIO_RATE_MASK) | get_gpio_val(rate);
	/* dev_dbg(ice->card->dev, "JULI - set_rate: old %x, new %x\n",
			old & GPIO_RATE_MASK,
			new & GPIO_RATE_MASK); */

	ice->gpio.set_data(ice, new);
	/* switching to external clock - supplied by external circuits */
	val = inb(ICEMT1724(ice, RATE));
	outb(val | VT1724_SPDIF_MASTER, ICEMT1724(ice, RATE));
}

static inline unsigned char juli_set_mclk(struct snd_ice1712 *ice,
					  unsigned int rate)
{
	/* no change in master clock */
	return 0;
}

/* setting clock to external - SPDIF */
static int juli_set_spdif_clock(struct snd_ice1712 *ice, int type)
{
	unsigned int old;
	old = ice->gpio.get_data(ice);
	/* external clock (= 0), multiply 1x, 48kHz */
	ice->gpio.set_data(ice, (old & ~GPIO_RATE_MASK) | GPIO_MULTI_1X |
			GPIO_FREQ_48KHZ);
	return 0;
}

/* Called when ak4114 detects change in the input SPDIF stream */
static void juli_ak4114_change(struct ak4114 *ak4114, unsigned char c0,
			       unsigned char c1)
{
	struct snd_ice1712 *ice = ak4114->change_callback_private;
	int rate;
	if (ice->is_spdif_master(ice) && c1) {
		/* only for SPDIF master mode, rate was changed */
		rate = snd_ak4114_external_rate(ak4114);
		/* dev_dbg(ice->card->dev, "ak4114 - input rate changed to %d\n",
				rate); */
		juli_akm_set_rate_val(ice->akm, rate);
	}
}

static int juli_init(struct snd_ice1712 *ice)
{
	static const unsigned char ak4114_init_vals[] = {
		/* AK4117_REG_PWRDN */	AK4114_RST | AK4114_PWN |
					AK4114_OCKS0 | AK4114_OCKS1,
		/* AK4114_REQ_FORMAT */	AK4114_DIF_I24I2S,
		/* AK4114_REG_IO0 */	AK4114_TX1E,
		/* AK4114_REG_IO1 */	AK4114_EFH_1024 | AK4114_DIT |
					AK4114_IPS(1),
		/* AK4114_REG_INT0_MASK */ 0,
		/* AK4114_REG_INT1_MASK */ 0
	};
	static const unsigned char ak4114_init_txcsb[] = {
		0x41, 0x02, 0x2c, 0x00, 0x00
	};
	int err;
	struct juli_spec *spec;
	struct snd_akm4xxx *ak;

	spec = kzalloc(sizeof(*spec), GFP_KERNEL);
	if (!spec)
		return -ENOMEM;
	ice->spec = spec;

	err = snd_ak4114_create(ice->card,
				juli_ak4114_read,
				juli_ak4114_write,
				ak4114_init_vals, ak4114_init_txcsb,
				ice, &spec->ak4114);
	if (err < 0)
		return err;
	/* callback for codecs rate setting */
	spec->ak4114->change_callback = juli_ak4114_change;
	spec->ak4114->change_callback_private = ice;
	/* AK4114 in Juli can detect external rate correctly */
	spec->ak4114->check_flags = 0;

#if 0
/*
 * it seems that the analog doughter board detection does not work reliably, so
 * force the analog flag; it should be very rare (if ever) to come at Juli@
 * used without the analog daughter board
 */
	spec->analog = (ice->gpio.get_data(ice) & GPIO_ANALOG_PRESENT) ? 0 : 1;
#else
	spec->analog = 1;
#endif

	if (spec->analog) {
		dev_info(ice->card->dev, "juli@: analog I/O detected\n");
		ice->num_total_dacs = 2;
		ice->num_total_adcs = 2;

		ice->akm = kzalloc(sizeof(struct snd_akm4xxx), GFP_KERNEL);
		ak = ice->akm;
		if (!ak)
			return -ENOMEM;
		ice->akm_codecs = 1;
		err = snd_ice1712_akm4xxx_init(ak, &akm_juli_dac, NULL, ice);
		if (err < 0)
			return err;
	}

	/* juli is clocked by Xilinx array */
	ice->hw_rates = &juli_rates_info;
	ice->is_spdif_master = juli_is_spdif_master;
	ice->get_rate = juli_get_rate;
	ice->set_rate = juli_set_rate;
	ice->set_mclk = juli_set_mclk;
	ice->set_spdif_clock = juli_set_spdif_clock;

	ice->spdif.ops.open = juli_spdif_in_open;

#ifdef CONFIG_PM_SLEEP
	ice->pm_resume = juli_resume;
	ice->pm_suspend = juli_suspend;
	ice->pm_suspend_enabled = 1;
#endif

	return 0;
}


/*
 * Juli@ boards don't provide the EEPROM data except for the vendor IDs.
 * hence the driver needs to sets up it properly.
 */

static unsigned char juli_eeprom[] = {
	[ICE_EEP2_SYSCONF]     = 0x2b,	/* clock 512, mpu401, 1xADC, 1xDACs,
					   SPDIF in */
	[ICE_EEP2_ACLINK]      = 0x80,	/* I2S */
	[ICE_EEP2_I2S]         = 0xf8,	/* vol, 96k, 24bit, 192k */
	[ICE_EEP2_SPDIF]       = 0xc3,	/* out-en, out-int, spdif-in */
	[ICE_EEP2_GPIO_DIR]    = 0x9f,	/* 5, 6:inputs; 7, 4-0 outputs*/
	[ICE_EEP2_GPIO_DIR1]   = 0xff,
	[ICE_EEP2_GPIO_DIR2]   = 0x7f,
	[ICE_EEP2_GPIO_MASK]   = 0x60,	/* 5, 6: locked; 7, 4-0 writable */
	[ICE_EEP2_GPIO_MASK1]  = 0x00,  /* 0-7 writable */
	[ICE_EEP2_GPIO_MASK2]  = 0x7f,
	[ICE_EEP2_GPIO_STATE]  = GPIO_FREQ_48KHZ | GPIO_MULTI_1X |
	       GPIO_INTERNAL_CLOCK,	/* internal clock, multiple 1x, 48kHz*/
	[ICE_EEP2_GPIO_STATE1] = 0x00,	/* unmuted */
	[ICE_EEP2_GPIO_STATE2] = 0x00,
};

/* entry point */
struct snd_ice1712_card_info snd_vt1724_juli_cards[] = {
	{
		.subvendor = VT1724_SUBDEVICE_JULI,
		.name = "ESI Juli@",
		.model = "juli",
		.chip_init = juli_init,
		.build_controls = juli_add_controls,
		.eeprom_size = sizeof(juli_eeprom),
		.eeprom_data = juli_eeprom,
	},
	{ } /* terminator */
};