xref: /linux/sound/pci/ice1712/juli.c (revision 0da85d1e38b4c186d2248f0239b72d465f5b406c)
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 <linux/delay.h>
27 #include <linux/interrupt.h>
28 #include <linux/init.h>
29 #include <linux/slab.h>
30 #include <sound/core.h>
31 #include <sound/tlv.h>
32 
33 #include "ice1712.h"
34 #include "envy24ht.h"
35 #include "juli.h"
36 
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,
164 				unsigned char val)
165 {
166 	snd_vt1724_write_i2c((struct snd_ice1712 *)private_data, AK4114_ADDR,
167 				reg, val);
168 }
169 
170 static unsigned char juli_ak4114_read(void *private_data, unsigned char reg)
171 {
172 	return snd_vt1724_read_i2c((struct snd_ice1712 *)private_data,
173 					AK4114_ADDR, reg);
174 }
175 
176 /*
177  * If SPDIF capture and slaved to SPDIF-IN, setting runtime rate
178  * to the external rate
179  */
180 static void juli_spdif_in_open(struct snd_ice1712 *ice,
181 				struct snd_pcm_substream *substream)
182 {
183 	struct juli_spec *spec = ice->spec;
184 	struct snd_pcm_runtime *runtime = substream->runtime;
185 	int rate;
186 
187 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK ||
188 			!ice->is_spdif_master(ice))
189 		return;
190 	rate = snd_ak4114_external_rate(spec->ak4114);
191 	if (rate >= runtime->hw.rate_min && rate <= runtime->hw.rate_max) {
192 		runtime->hw.rate_min = rate;
193 		runtime->hw.rate_max = rate;
194 	}
195 }
196 
197 /*
198  * AK4358 section
199  */
200 
201 static void juli_akm_lock(struct snd_akm4xxx *ak, int chip)
202 {
203 }
204 
205 static void juli_akm_unlock(struct snd_akm4xxx *ak, int chip)
206 {
207 }
208 
209 static void juli_akm_write(struct snd_akm4xxx *ak, int chip,
210 			   unsigned char addr, unsigned char data)
211 {
212 	struct snd_ice1712 *ice = ak->private_data[0];
213 
214 	if (snd_BUG_ON(chip))
215 		return;
216 	snd_vt1724_write_i2c(ice, AK4358_ADDR, addr, data);
217 }
218 
219 /*
220  * change the rate of envy24HT, AK4358, AK5385
221  */
222 static void juli_akm_set_rate_val(struct snd_akm4xxx *ak, unsigned int rate)
223 {
224 	unsigned char old, tmp, ak4358_dfs;
225 	unsigned int ak5385_pins, old_gpio, new_gpio;
226 	struct snd_ice1712 *ice = ak->private_data[0];
227 	struct juli_spec *spec = ice->spec;
228 
229 	if (rate == 0)  /* no hint - S/PDIF input is master or the new spdif
230 			   input rate undetected, simply return */
231 		return;
232 
233 	/* adjust DFS on codecs */
234 	if (rate > 96000)  {
235 		ak4358_dfs = 2;
236 		ak5385_pins = GPIO_AK5385A_DFS1 | GPIO_AK5385A_CKS0;
237 	} else if (rate > 48000) {
238 		ak4358_dfs = 1;
239 		ak5385_pins = GPIO_AK5385A_DFS0;
240 	} else {
241 		ak4358_dfs = 0;
242 		ak5385_pins = 0;
243 	}
244 	/* AK5385 first, since it requires cold reset affecting both codecs */
245 	old_gpio = ice->gpio.get_data(ice);
246 	new_gpio =  (old_gpio & ~GPIO_AK5385A_MASK) | ak5385_pins;
247 	/* dev_dbg(ice->card->dev, "JULI - ak5385 set_rate_val: new gpio 0x%x\n",
248 		new_gpio); */
249 	ice->gpio.set_data(ice, new_gpio);
250 
251 	/* cold reset */
252 	old = inb(ICEMT1724(ice, AC97_CMD));
253 	outb(old | VT1724_AC97_COLD, ICEMT1724(ice, AC97_CMD));
254 	udelay(1);
255 	outb(old & ~VT1724_AC97_COLD, ICEMT1724(ice, AC97_CMD));
256 
257 	/* AK4358 */
258 	/* set new value, reset DFS */
259 	tmp = snd_akm4xxx_get(ak, 0, 2);
260 	snd_akm4xxx_reset(ak, 1);
261 	tmp = snd_akm4xxx_get(ak, 0, 2);
262 	tmp &= ~(0x03 << 4);
263 	tmp |= ak4358_dfs << 4;
264 	snd_akm4xxx_set(ak, 0, 2, tmp);
265 	snd_akm4xxx_reset(ak, 0);
266 
267 	/* reinit ak4114 */
268 	snd_ak4114_reinit(spec->ak4114);
269 }
270 
271 #define AK_DAC(xname, xch)	{ .name = xname, .num_channels = xch }
272 #define PCM_VOLUME		"PCM Playback Volume"
273 #define MONITOR_AN_IN_VOLUME	"Monitor Analog In Volume"
274 #define MONITOR_DIG_IN_VOLUME	"Monitor Digital In Volume"
275 #define MONITOR_DIG_OUT_VOLUME	"Monitor Digital Out Volume"
276 
277 static const struct snd_akm4xxx_dac_channel juli_dac[] = {
278 	AK_DAC(PCM_VOLUME, 2),
279 	AK_DAC(MONITOR_AN_IN_VOLUME, 2),
280 	AK_DAC(MONITOR_DIG_OUT_VOLUME, 2),
281 	AK_DAC(MONITOR_DIG_IN_VOLUME, 2),
282 };
283 
284 
285 static struct snd_akm4xxx akm_juli_dac = {
286 	.type = SND_AK4358,
287 	.num_dacs = 8,	/* DAC1 - analog out
288 			   DAC2 - analog in monitor
289 			   DAC3 - digital out monitor
290 			   DAC4 - digital in monitor
291 			 */
292 	.ops = {
293 		.lock = juli_akm_lock,
294 		.unlock = juli_akm_unlock,
295 		.write = juli_akm_write,
296 		.set_rate_val = juli_akm_set_rate_val
297 	},
298 	.dac_info = juli_dac,
299 };
300 
301 #define juli_mute_info		snd_ctl_boolean_mono_info
302 
303 static int juli_mute_get(struct snd_kcontrol *kcontrol,
304 		struct snd_ctl_elem_value *ucontrol)
305 {
306 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
307 	unsigned int val;
308 	val = ice->gpio.get_data(ice) & (unsigned int) kcontrol->private_value;
309 	if (kcontrol->private_value == GPIO_MUTE_CONTROL)
310 		/* val 0 = signal on */
311 		ucontrol->value.integer.value[0] = (val) ? 0 : 1;
312 	else
313 		/* val 1 = signal on */
314 		ucontrol->value.integer.value[0] = (val) ? 1 : 0;
315 	return 0;
316 }
317 
318 static int juli_mute_put(struct snd_kcontrol *kcontrol,
319 		struct snd_ctl_elem_value *ucontrol)
320 {
321 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
322 	unsigned int old_gpio, new_gpio;
323 	old_gpio = ice->gpio.get_data(ice);
324 	if (ucontrol->value.integer.value[0]) {
325 		/* unmute */
326 		if (kcontrol->private_value == GPIO_MUTE_CONTROL) {
327 			/* 0 = signal on */
328 			new_gpio = old_gpio & ~GPIO_MUTE_CONTROL;
329 			/* un-smuting DAC */
330 			snd_akm4xxx_write(ice->akm, 0, 0x01, 0x01);
331 		} else
332 			/* 1 = signal on */
333 			new_gpio =  old_gpio |
334 				(unsigned int) kcontrol->private_value;
335 	} else {
336 		/* mute */
337 		if (kcontrol->private_value == GPIO_MUTE_CONTROL) {
338 			/* 1 = signal off */
339 			new_gpio = old_gpio | GPIO_MUTE_CONTROL;
340 			/* smuting DAC */
341 			snd_akm4xxx_write(ice->akm, 0, 0x01, 0x03);
342 		} else
343 			/* 0 = signal off */
344 			new_gpio =  old_gpio &
345 				~((unsigned int) kcontrol->private_value);
346 	}
347 	/* dev_dbg(ice->card->dev,
348 		"JULI - mute/unmute: control_value: 0x%x, old_gpio: 0x%x, "
349 		"new_gpio 0x%x\n",
350 		(unsigned int)ucontrol->value.integer.value[0], old_gpio,
351 		new_gpio); */
352 	if (old_gpio != new_gpio) {
353 		ice->gpio.set_data(ice, new_gpio);
354 		return 1;
355 	}
356 	/* no change */
357 	return 0;
358 }
359 
360 static struct snd_kcontrol_new juli_mute_controls[] = {
361 	{
362 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
363 		.name = "Master Playback Switch",
364 		.info = juli_mute_info,
365 		.get = juli_mute_get,
366 		.put = juli_mute_put,
367 		.private_value = GPIO_MUTE_CONTROL,
368 	},
369 	/* Although the following functionality respects the succint NDA'd
370 	 * documentation from the card manufacturer, and the same way of
371 	 * operation is coded in OSS Juli driver, only Digital Out monitor
372 	 * seems to work. Surprisingly, Analog input monitor outputs Digital
373 	 * output data. The two are independent, as enabling both doubles
374 	 * volume of the monitor sound.
375 	 *
376 	 * Checking traces on the board suggests the functionality described
377 	 * by the manufacturer is correct - I2S from ADC and AK4114
378 	 * go to ICE as well as to Xilinx, I2S inputs of DAC2,3,4 (the monitor
379 	 * inputs) are fed from Xilinx.
380 	 *
381 	 * I even checked traces on board and coded a support in driver for
382 	 * an alternative possibility - the unused I2S ICE output channels
383 	 * switched to HW-IN/SPDIF-IN and providing the monitoring signal to
384 	 * the DAC - to no avail. The I2S outputs seem to be unconnected.
385 	 *
386 	 * The windows driver supports the monitoring correctly.
387 	 */
388 	{
389 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
390 		.name = "Monitor Analog In Switch",
391 		.info = juli_mute_info,
392 		.get = juli_mute_get,
393 		.put = juli_mute_put,
394 		.private_value = GPIO_ANAIN_MONITOR,
395 	},
396 	{
397 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
398 		.name = "Monitor Digital Out Switch",
399 		.info = juli_mute_info,
400 		.get = juli_mute_get,
401 		.put = juli_mute_put,
402 		.private_value = GPIO_DIGOUT_MONITOR,
403 	},
404 	{
405 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
406 		.name = "Monitor Digital In Switch",
407 		.info = juli_mute_info,
408 		.get = juli_mute_get,
409 		.put = juli_mute_put,
410 		.private_value = GPIO_DIGIN_MONITOR,
411 	},
412 };
413 
414 static char *slave_vols[] = {
415 	PCM_VOLUME,
416 	MONITOR_AN_IN_VOLUME,
417 	MONITOR_DIG_IN_VOLUME,
418 	MONITOR_DIG_OUT_VOLUME,
419 	NULL
420 };
421 
422 static
423 DECLARE_TLV_DB_SCALE(juli_master_db_scale, -6350, 50, 1);
424 
425 static struct snd_kcontrol *ctl_find(struct snd_card *card,
426 				     const char *name)
427 {
428 	struct snd_ctl_elem_id sid;
429 	memset(&sid, 0, sizeof(sid));
430 	/* FIXME: strcpy is bad. */
431 	strcpy(sid.name, name);
432 	sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
433 	return snd_ctl_find_id(card, &sid);
434 }
435 
436 static void add_slaves(struct snd_card *card,
437 		       struct snd_kcontrol *master,
438 		       char * const *list)
439 {
440 	for (; *list; list++) {
441 		struct snd_kcontrol *slave = ctl_find(card, *list);
442 		/* dev_dbg(card->dev, "add_slaves - %s\n", *list); */
443 		if (slave) {
444 			/* dev_dbg(card->dev, "slave %s found\n", *list); */
445 			snd_ctl_add_slave(master, slave);
446 		}
447 	}
448 }
449 
450 static int juli_add_controls(struct snd_ice1712 *ice)
451 {
452 	struct juli_spec *spec = ice->spec;
453 	int err;
454 	unsigned int i;
455 	struct snd_kcontrol *vmaster;
456 
457 	err = snd_ice1712_akm4xxx_build_controls(ice);
458 	if (err < 0)
459 		return err;
460 
461 	for (i = 0; i < ARRAY_SIZE(juli_mute_controls); i++) {
462 		err = snd_ctl_add(ice->card,
463 				snd_ctl_new1(&juli_mute_controls[i], ice));
464 		if (err < 0)
465 			return err;
466 	}
467 	/* Create virtual master control */
468 	vmaster = snd_ctl_make_virtual_master("Master Playback Volume",
469 					      juli_master_db_scale);
470 	if (!vmaster)
471 		return -ENOMEM;
472 	add_slaves(ice->card, vmaster, slave_vols);
473 	err = snd_ctl_add(ice->card, vmaster);
474 	if (err < 0)
475 		return err;
476 
477 	/* only capture SPDIF over AK4114 */
478 	return snd_ak4114_build(spec->ak4114, NULL,
479 			ice->pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
480 }
481 
482 /*
483  * suspend/resume
484  * */
485 
486 #ifdef CONFIG_PM_SLEEP
487 static int juli_resume(struct snd_ice1712 *ice)
488 {
489 	struct snd_akm4xxx *ak = ice->akm;
490 	struct juli_spec *spec = ice->spec;
491 	/* akm4358 un-reset, un-mute */
492 	snd_akm4xxx_reset(ak, 0);
493 	/* reinit ak4114 */
494 	snd_ak4114_resume(spec->ak4114);
495 	return 0;
496 }
497 
498 static int juli_suspend(struct snd_ice1712 *ice)
499 {
500 	struct snd_akm4xxx *ak = ice->akm;
501 	struct juli_spec *spec = ice->spec;
502 	/* akm4358 reset and soft-mute */
503 	snd_akm4xxx_reset(ak, 1);
504 	snd_ak4114_suspend(spec->ak4114);
505 	return 0;
506 }
507 #endif
508 
509 /*
510  * initialize the chip
511  */
512 
513 static inline int juli_is_spdif_master(struct snd_ice1712 *ice)
514 {
515 	return (ice->gpio.get_data(ice) & GPIO_INTERNAL_CLOCK) ? 0 : 1;
516 }
517 
518 static unsigned int juli_get_rate(struct snd_ice1712 *ice)
519 {
520 	int i;
521 	unsigned char result;
522 
523 	result =  ice->gpio.get_data(ice) & GPIO_RATE_MASK;
524 	for (i = 0; i < ARRAY_SIZE(gpio_vals); i++)
525 		if (gpio_vals[i] == result)
526 			return juli_rates[i];
527 	return 0;
528 }
529 
530 /* setting new rate */
531 static void juli_set_rate(struct snd_ice1712 *ice, unsigned int rate)
532 {
533 	unsigned int old, new;
534 	unsigned char val;
535 
536 	old = ice->gpio.get_data(ice);
537 	new =  (old & ~GPIO_RATE_MASK) | get_gpio_val(rate);
538 	/* dev_dbg(ice->card->dev, "JULI - set_rate: old %x, new %x\n",
539 			old & GPIO_RATE_MASK,
540 			new & GPIO_RATE_MASK); */
541 
542 	ice->gpio.set_data(ice, new);
543 	/* switching to external clock - supplied by external circuits */
544 	val = inb(ICEMT1724(ice, RATE));
545 	outb(val | VT1724_SPDIF_MASTER, ICEMT1724(ice, RATE));
546 }
547 
548 static inline unsigned char juli_set_mclk(struct snd_ice1712 *ice,
549 					  unsigned int rate)
550 {
551 	/* no change in master clock */
552 	return 0;
553 }
554 
555 /* setting clock to external - SPDIF */
556 static int juli_set_spdif_clock(struct snd_ice1712 *ice, int type)
557 {
558 	unsigned int old;
559 	old = ice->gpio.get_data(ice);
560 	/* external clock (= 0), multiply 1x, 48kHz */
561 	ice->gpio.set_data(ice, (old & ~GPIO_RATE_MASK) | GPIO_MULTI_1X |
562 			GPIO_FREQ_48KHZ);
563 	return 0;
564 }
565 
566 /* Called when ak4114 detects change in the input SPDIF stream */
567 static void juli_ak4114_change(struct ak4114 *ak4114, unsigned char c0,
568 			       unsigned char c1)
569 {
570 	struct snd_ice1712 *ice = ak4114->change_callback_private;
571 	int rate;
572 	if (ice->is_spdif_master(ice) && c1) {
573 		/* only for SPDIF master mode, rate was changed */
574 		rate = snd_ak4114_external_rate(ak4114);
575 		/* dev_dbg(ice->card->dev, "ak4114 - input rate changed to %d\n",
576 				rate); */
577 		juli_akm_set_rate_val(ice->akm, rate);
578 	}
579 }
580 
581 static int juli_init(struct snd_ice1712 *ice)
582 {
583 	static const unsigned char ak4114_init_vals[] = {
584 		/* AK4117_REG_PWRDN */	AK4114_RST | AK4114_PWN |
585 					AK4114_OCKS0 | AK4114_OCKS1,
586 		/* AK4114_REQ_FORMAT */	AK4114_DIF_I24I2S,
587 		/* AK4114_REG_IO0 */	AK4114_TX1E,
588 		/* AK4114_REG_IO1 */	AK4114_EFH_1024 | AK4114_DIT |
589 					AK4114_IPS(1),
590 		/* AK4114_REG_INT0_MASK */ 0,
591 		/* AK4114_REG_INT1_MASK */ 0
592 	};
593 	static const unsigned char ak4114_init_txcsb[] = {
594 		0x41, 0x02, 0x2c, 0x00, 0x00
595 	};
596 	int err;
597 	struct juli_spec *spec;
598 	struct snd_akm4xxx *ak;
599 
600 	spec = kzalloc(sizeof(*spec), GFP_KERNEL);
601 	if (!spec)
602 		return -ENOMEM;
603 	ice->spec = spec;
604 
605 	err = snd_ak4114_create(ice->card,
606 				juli_ak4114_read,
607 				juli_ak4114_write,
608 				ak4114_init_vals, ak4114_init_txcsb,
609 				ice, &spec->ak4114);
610 	if (err < 0)
611 		return err;
612 	/* callback for codecs rate setting */
613 	spec->ak4114->change_callback = juli_ak4114_change;
614 	spec->ak4114->change_callback_private = ice;
615 	/* AK4114 in Juli can detect external rate correctly */
616 	spec->ak4114->check_flags = 0;
617 
618 #if 0
619 /*
620  * it seems that the analog doughter board detection does not work reliably, so
621  * force the analog flag; it should be very rare (if ever) to come at Juli@
622  * used without the analog daughter board
623  */
624 	spec->analog = (ice->gpio.get_data(ice) & GPIO_ANALOG_PRESENT) ? 0 : 1;
625 #else
626 	spec->analog = 1;
627 #endif
628 
629 	if (spec->analog) {
630 		dev_info(ice->card->dev, "juli@: analog I/O detected\n");
631 		ice->num_total_dacs = 2;
632 		ice->num_total_adcs = 2;
633 
634 		ice->akm = kzalloc(sizeof(struct snd_akm4xxx), GFP_KERNEL);
635 		ak = ice->akm;
636 		if (!ak)
637 			return -ENOMEM;
638 		ice->akm_codecs = 1;
639 		err = snd_ice1712_akm4xxx_init(ak, &akm_juli_dac, NULL, ice);
640 		if (err < 0)
641 			return err;
642 	}
643 
644 	/* juli is clocked by Xilinx array */
645 	ice->hw_rates = &juli_rates_info;
646 	ice->is_spdif_master = juli_is_spdif_master;
647 	ice->get_rate = juli_get_rate;
648 	ice->set_rate = juli_set_rate;
649 	ice->set_mclk = juli_set_mclk;
650 	ice->set_spdif_clock = juli_set_spdif_clock;
651 
652 	ice->spdif.ops.open = juli_spdif_in_open;
653 
654 #ifdef CONFIG_PM_SLEEP
655 	ice->pm_resume = juli_resume;
656 	ice->pm_suspend = juli_suspend;
657 	ice->pm_suspend_enabled = 1;
658 #endif
659 
660 	return 0;
661 }
662 
663 
664 /*
665  * Juli@ boards don't provide the EEPROM data except for the vendor IDs.
666  * hence the driver needs to sets up it properly.
667  */
668 
669 static unsigned char juli_eeprom[] = {
670 	[ICE_EEP2_SYSCONF]     = 0x2b,	/* clock 512, mpu401, 1xADC, 1xDACs,
671 					   SPDIF in */
672 	[ICE_EEP2_ACLINK]      = 0x80,	/* I2S */
673 	[ICE_EEP2_I2S]         = 0xf8,	/* vol, 96k, 24bit, 192k */
674 	[ICE_EEP2_SPDIF]       = 0xc3,	/* out-en, out-int, spdif-in */
675 	[ICE_EEP2_GPIO_DIR]    = 0x9f,	/* 5, 6:inputs; 7, 4-0 outputs*/
676 	[ICE_EEP2_GPIO_DIR1]   = 0xff,
677 	[ICE_EEP2_GPIO_DIR2]   = 0x7f,
678 	[ICE_EEP2_GPIO_MASK]   = 0x60,	/* 5, 6: locked; 7, 4-0 writable */
679 	[ICE_EEP2_GPIO_MASK1]  = 0x00,  /* 0-7 writable */
680 	[ICE_EEP2_GPIO_MASK2]  = 0x7f,
681 	[ICE_EEP2_GPIO_STATE]  = GPIO_FREQ_48KHZ | GPIO_MULTI_1X |
682 	       GPIO_INTERNAL_CLOCK,	/* internal clock, multiple 1x, 48kHz*/
683 	[ICE_EEP2_GPIO_STATE1] = 0x00,	/* unmuted */
684 	[ICE_EEP2_GPIO_STATE2] = 0x00,
685 };
686 
687 /* entry point */
688 struct snd_ice1712_card_info snd_vt1724_juli_cards[] = {
689 	{
690 		.subvendor = VT1724_SUBDEVICE_JULI,
691 		.name = "ESI Juli@",
692 		.model = "juli",
693 		.chip_init = juli_init,
694 		.build_controls = juli_add_controls,
695 		.eeprom_size = sizeof(juli_eeprom),
696 		.eeprom_data = juli_eeprom,
697 	},
698 	{ } /* terminator */
699 };
700