xref: /openbmc/linux/sound/pci/ice1712/juli.c (revision 22246614)
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 };
677