xref: /openbmc/linux/sound/pci/ice1712/pontis.c (revision b8d312aa)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *   ALSA driver for ICEnsemble VT1724 (Envy24HT)
4  *
5  *   Lowlevel functions for Pontis MS300
6  *
7  *	Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
8  */
9 
10 #include <linux/delay.h>
11 #include <linux/interrupt.h>
12 #include <linux/init.h>
13 #include <linux/slab.h>
14 #include <linux/mutex.h>
15 
16 #include <sound/core.h>
17 #include <sound/info.h>
18 #include <sound/tlv.h>
19 
20 #include "ice1712.h"
21 #include "envy24ht.h"
22 #include "pontis.h"
23 
24 /* I2C addresses */
25 #define WM_DEV		0x34
26 #define CS_DEV		0x20
27 
28 /* WM8776 registers */
29 #define WM_HP_ATTEN_L		0x00	/* headphone left attenuation */
30 #define WM_HP_ATTEN_R		0x01	/* headphone left attenuation */
31 #define WM_HP_MASTER		0x02	/* headphone master (both channels) */
32 					/* override LLR */
33 #define WM_DAC_ATTEN_L		0x03	/* digital left attenuation */
34 #define WM_DAC_ATTEN_R		0x04
35 #define WM_DAC_MASTER		0x05
36 #define WM_PHASE_SWAP		0x06	/* DAC phase swap */
37 #define WM_DAC_CTRL1		0x07
38 #define WM_DAC_MUTE		0x08
39 #define WM_DAC_CTRL2		0x09
40 #define WM_DAC_INT		0x0a
41 #define WM_ADC_INT		0x0b
42 #define WM_MASTER_CTRL		0x0c
43 #define WM_POWERDOWN		0x0d
44 #define WM_ADC_ATTEN_L		0x0e
45 #define WM_ADC_ATTEN_R		0x0f
46 #define WM_ALC_CTRL1		0x10
47 #define WM_ALC_CTRL2		0x11
48 #define WM_ALC_CTRL3		0x12
49 #define WM_NOISE_GATE		0x13
50 #define WM_LIMITER		0x14
51 #define WM_ADC_MUX		0x15
52 #define WM_OUT_MUX		0x16
53 #define WM_RESET		0x17
54 
55 /*
56  * GPIO
57  */
58 #define PONTIS_CS_CS		(1<<4)	/* CS */
59 #define PONTIS_CS_CLK		(1<<5)	/* CLK */
60 #define PONTIS_CS_RDATA		(1<<6)	/* CS8416 -> VT1720 */
61 #define PONTIS_CS_WDATA		(1<<7)	/* VT1720 -> CS8416 */
62 
63 
64 /*
65  * get the current register value of WM codec
66  */
67 static unsigned short wm_get(struct snd_ice1712 *ice, int reg)
68 {
69 	reg <<= 1;
70 	return ((unsigned short)ice->akm[0].images[reg] << 8) |
71 		ice->akm[0].images[reg + 1];
72 }
73 
74 /*
75  * set the register value of WM codec and remember it
76  */
77 static void wm_put_nocache(struct snd_ice1712 *ice, int reg, unsigned short val)
78 {
79 	unsigned short cval;
80 	cval = (reg << 9) | val;
81 	snd_vt1724_write_i2c(ice, WM_DEV, cval >> 8, cval & 0xff);
82 }
83 
84 static void wm_put(struct snd_ice1712 *ice, int reg, unsigned short val)
85 {
86 	wm_put_nocache(ice, reg, val);
87 	reg <<= 1;
88 	ice->akm[0].images[reg] = val >> 8;
89 	ice->akm[0].images[reg + 1] = val;
90 }
91 
92 /*
93  * DAC volume attenuation mixer control (-64dB to 0dB)
94  */
95 
96 #define DAC_0dB	0xff
97 #define DAC_RES	128
98 #define DAC_MIN	(DAC_0dB - DAC_RES)
99 
100 static int wm_dac_vol_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
101 {
102 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
103 	uinfo->count = 2;
104 	uinfo->value.integer.min = 0;	/* mute */
105 	uinfo->value.integer.max = DAC_RES;	/* 0dB, 0.5dB step */
106 	return 0;
107 }
108 
109 static int wm_dac_vol_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
110 {
111 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
112 	unsigned short val;
113 	int i;
114 
115 	mutex_lock(&ice->gpio_mutex);
116 	for (i = 0; i < 2; i++) {
117 		val = wm_get(ice, WM_DAC_ATTEN_L + i) & 0xff;
118 		val = val > DAC_MIN ? (val - DAC_MIN) : 0;
119 		ucontrol->value.integer.value[i] = val;
120 	}
121 	mutex_unlock(&ice->gpio_mutex);
122 	return 0;
123 }
124 
125 static int wm_dac_vol_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
126 {
127 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
128 	unsigned short oval, nval;
129 	int i, idx, change = 0;
130 
131 	mutex_lock(&ice->gpio_mutex);
132 	for (i = 0; i < 2; i++) {
133 		nval = ucontrol->value.integer.value[i];
134 		nval = (nval ? (nval + DAC_MIN) : 0) & 0xff;
135 		idx = WM_DAC_ATTEN_L + i;
136 		oval = wm_get(ice, idx) & 0xff;
137 		if (oval != nval) {
138 			wm_put(ice, idx, nval);
139 			wm_put_nocache(ice, idx, nval | 0x100);
140 			change = 1;
141 		}
142 	}
143 	mutex_unlock(&ice->gpio_mutex);
144 	return change;
145 }
146 
147 /*
148  * ADC gain mixer control (-64dB to 0dB)
149  */
150 
151 #define ADC_0dB	0xcf
152 #define ADC_RES	128
153 #define ADC_MIN	(ADC_0dB - ADC_RES)
154 
155 static int wm_adc_vol_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
156 {
157 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
158 	uinfo->count = 2;
159 	uinfo->value.integer.min = 0;	/* mute (-64dB) */
160 	uinfo->value.integer.max = ADC_RES;	/* 0dB, 0.5dB step */
161 	return 0;
162 }
163 
164 static int wm_adc_vol_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
165 {
166 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
167 	unsigned short val;
168 	int i;
169 
170 	mutex_lock(&ice->gpio_mutex);
171 	for (i = 0; i < 2; i++) {
172 		val = wm_get(ice, WM_ADC_ATTEN_L + i) & 0xff;
173 		val = val > ADC_MIN ? (val - ADC_MIN) : 0;
174 		ucontrol->value.integer.value[i] = val;
175 	}
176 	mutex_unlock(&ice->gpio_mutex);
177 	return 0;
178 }
179 
180 static int wm_adc_vol_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
181 {
182 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
183 	unsigned short ovol, nvol;
184 	int i, idx, change = 0;
185 
186 	mutex_lock(&ice->gpio_mutex);
187 	for (i = 0; i < 2; i++) {
188 		nvol = ucontrol->value.integer.value[i];
189 		nvol = nvol ? (nvol + ADC_MIN) : 0;
190 		idx  = WM_ADC_ATTEN_L + i;
191 		ovol = wm_get(ice, idx) & 0xff;
192 		if (ovol != nvol) {
193 			wm_put(ice, idx, nvol);
194 			change = 1;
195 		}
196 	}
197 	mutex_unlock(&ice->gpio_mutex);
198 	return change;
199 }
200 
201 /*
202  * ADC input mux mixer control
203  */
204 #define wm_adc_mux_info		snd_ctl_boolean_mono_info
205 
206 static int wm_adc_mux_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
207 {
208 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
209 	int bit = kcontrol->private_value;
210 
211 	mutex_lock(&ice->gpio_mutex);
212 	ucontrol->value.integer.value[0] = (wm_get(ice, WM_ADC_MUX) & (1 << bit)) ? 1 : 0;
213 	mutex_unlock(&ice->gpio_mutex);
214 	return 0;
215 }
216 
217 static int wm_adc_mux_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
218 {
219 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
220 	int bit = kcontrol->private_value;
221 	unsigned short oval, nval;
222 	int change;
223 
224 	mutex_lock(&ice->gpio_mutex);
225 	nval = oval = wm_get(ice, WM_ADC_MUX);
226 	if (ucontrol->value.integer.value[0])
227 		nval |= (1 << bit);
228 	else
229 		nval &= ~(1 << bit);
230 	change = nval != oval;
231 	if (change) {
232 		wm_put(ice, WM_ADC_MUX, nval);
233 	}
234 	mutex_unlock(&ice->gpio_mutex);
235 	return change;
236 }
237 
238 /*
239  * Analog bypass (In -> Out)
240  */
241 #define wm_bypass_info		snd_ctl_boolean_mono_info
242 
243 static int wm_bypass_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
244 {
245 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
246 
247 	mutex_lock(&ice->gpio_mutex);
248 	ucontrol->value.integer.value[0] = (wm_get(ice, WM_OUT_MUX) & 0x04) ? 1 : 0;
249 	mutex_unlock(&ice->gpio_mutex);
250 	return 0;
251 }
252 
253 static int wm_bypass_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
254 {
255 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
256 	unsigned short val, oval;
257 	int change = 0;
258 
259 	mutex_lock(&ice->gpio_mutex);
260 	val = oval = wm_get(ice, WM_OUT_MUX);
261 	if (ucontrol->value.integer.value[0])
262 		val |= 0x04;
263 	else
264 		val &= ~0x04;
265 	if (val != oval) {
266 		wm_put(ice, WM_OUT_MUX, val);
267 		change = 1;
268 	}
269 	mutex_unlock(&ice->gpio_mutex);
270 	return change;
271 }
272 
273 /*
274  * Left/Right swap
275  */
276 #define wm_chswap_info		snd_ctl_boolean_mono_info
277 
278 static int wm_chswap_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
279 {
280 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
281 
282 	mutex_lock(&ice->gpio_mutex);
283 	ucontrol->value.integer.value[0] = (wm_get(ice, WM_DAC_CTRL1) & 0xf0) != 0x90;
284 	mutex_unlock(&ice->gpio_mutex);
285 	return 0;
286 }
287 
288 static int wm_chswap_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
289 {
290 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
291 	unsigned short val, oval;
292 	int change = 0;
293 
294 	mutex_lock(&ice->gpio_mutex);
295 	oval = wm_get(ice, WM_DAC_CTRL1);
296 	val = oval & 0x0f;
297 	if (ucontrol->value.integer.value[0])
298 		val |= 0x60;
299 	else
300 		val |= 0x90;
301 	if (val != oval) {
302 		wm_put(ice, WM_DAC_CTRL1, val);
303 		wm_put_nocache(ice, WM_DAC_CTRL1, val);
304 		change = 1;
305 	}
306 	mutex_unlock(&ice->gpio_mutex);
307 	return change;
308 }
309 
310 /*
311  * write data in the SPI mode
312  */
313 static void set_gpio_bit(struct snd_ice1712 *ice, unsigned int bit, int val)
314 {
315 	unsigned int tmp = snd_ice1712_gpio_read(ice);
316 	if (val)
317 		tmp |= bit;
318 	else
319 		tmp &= ~bit;
320 	snd_ice1712_gpio_write(ice, tmp);
321 }
322 
323 static void spi_send_byte(struct snd_ice1712 *ice, unsigned char data)
324 {
325 	int i;
326 	for (i = 0; i < 8; i++) {
327 		set_gpio_bit(ice, PONTIS_CS_CLK, 0);
328 		udelay(1);
329 		set_gpio_bit(ice, PONTIS_CS_WDATA, data & 0x80);
330 		udelay(1);
331 		set_gpio_bit(ice, PONTIS_CS_CLK, 1);
332 		udelay(1);
333 		data <<= 1;
334 	}
335 }
336 
337 static unsigned int spi_read_byte(struct snd_ice1712 *ice)
338 {
339 	int i;
340 	unsigned int val = 0;
341 
342 	for (i = 0; i < 8; i++) {
343 		val <<= 1;
344 		set_gpio_bit(ice, PONTIS_CS_CLK, 0);
345 		udelay(1);
346 		if (snd_ice1712_gpio_read(ice) & PONTIS_CS_RDATA)
347 			val |= 1;
348 		udelay(1);
349 		set_gpio_bit(ice, PONTIS_CS_CLK, 1);
350 		udelay(1);
351 	}
352 	return val;
353 }
354 
355 
356 static void spi_write(struct snd_ice1712 *ice, unsigned int dev, unsigned int reg, unsigned int data)
357 {
358 	snd_ice1712_gpio_set_dir(ice, PONTIS_CS_CS|PONTIS_CS_WDATA|PONTIS_CS_CLK);
359 	snd_ice1712_gpio_set_mask(ice, ~(PONTIS_CS_CS|PONTIS_CS_WDATA|PONTIS_CS_CLK));
360 	set_gpio_bit(ice, PONTIS_CS_CS, 0);
361 	spi_send_byte(ice, dev & ~1); /* WRITE */
362 	spi_send_byte(ice, reg); /* MAP */
363 	spi_send_byte(ice, data); /* DATA */
364 	/* trigger */
365 	set_gpio_bit(ice, PONTIS_CS_CS, 1);
366 	udelay(1);
367 	/* restore */
368 	snd_ice1712_gpio_set_mask(ice, ice->gpio.write_mask);
369 	snd_ice1712_gpio_set_dir(ice, ice->gpio.direction);
370 }
371 
372 static unsigned int spi_read(struct snd_ice1712 *ice, unsigned int dev, unsigned int reg)
373 {
374 	unsigned int val;
375 	snd_ice1712_gpio_set_dir(ice, PONTIS_CS_CS|PONTIS_CS_WDATA|PONTIS_CS_CLK);
376 	snd_ice1712_gpio_set_mask(ice, ~(PONTIS_CS_CS|PONTIS_CS_WDATA|PONTIS_CS_CLK));
377 	set_gpio_bit(ice, PONTIS_CS_CS, 0);
378 	spi_send_byte(ice, dev & ~1); /* WRITE */
379 	spi_send_byte(ice, reg); /* MAP */
380 	/* trigger */
381 	set_gpio_bit(ice, PONTIS_CS_CS, 1);
382 	udelay(1);
383 	set_gpio_bit(ice, PONTIS_CS_CS, 0);
384 	spi_send_byte(ice, dev | 1); /* READ */
385 	val = spi_read_byte(ice);
386 	/* trigger */
387 	set_gpio_bit(ice, PONTIS_CS_CS, 1);
388 	udelay(1);
389 	/* restore */
390 	snd_ice1712_gpio_set_mask(ice, ice->gpio.write_mask);
391 	snd_ice1712_gpio_set_dir(ice, ice->gpio.direction);
392 	return val;
393 }
394 
395 
396 /*
397  * SPDIF input source
398  */
399 static int cs_source_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
400 {
401 	static const char * const texts[] = {
402 		"Coax",		/* RXP0 */
403 		"Optical",	/* RXP1 */
404 		"CD",		/* RXP2 */
405 	};
406 	return snd_ctl_enum_info(uinfo, 1, 3, texts);
407 }
408 
409 static int cs_source_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
410 {
411 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
412 
413 	mutex_lock(&ice->gpio_mutex);
414 	ucontrol->value.enumerated.item[0] = ice->gpio.saved[0];
415 	mutex_unlock(&ice->gpio_mutex);
416 	return 0;
417 }
418 
419 static int cs_source_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
420 {
421 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
422 	unsigned char val;
423 	int change = 0;
424 
425 	mutex_lock(&ice->gpio_mutex);
426 	if (ucontrol->value.enumerated.item[0] != ice->gpio.saved[0]) {
427 		ice->gpio.saved[0] = ucontrol->value.enumerated.item[0] & 3;
428 		val = 0x80 | (ice->gpio.saved[0] << 3);
429 		spi_write(ice, CS_DEV, 0x04, val);
430 		change = 1;
431 	}
432 	mutex_unlock(&ice->gpio_mutex);
433 	return change;
434 }
435 
436 
437 /*
438  * GPIO controls
439  */
440 static int pontis_gpio_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
441 {
442 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
443 	uinfo->count = 1;
444 	uinfo->value.integer.min = 0;
445 	uinfo->value.integer.max = 0xffff; /* 16bit */
446 	return 0;
447 }
448 
449 static int pontis_gpio_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
450 {
451 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
452 	mutex_lock(&ice->gpio_mutex);
453 	/* 4-7 reserved */
454 	ucontrol->value.integer.value[0] = (~ice->gpio.write_mask & 0xffff) | 0x00f0;
455 	mutex_unlock(&ice->gpio_mutex);
456 	return 0;
457 }
458 
459 static int pontis_gpio_mask_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
460 {
461 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
462 	unsigned int val;
463 	int changed;
464 	mutex_lock(&ice->gpio_mutex);
465 	/* 4-7 reserved */
466 	val = (~ucontrol->value.integer.value[0] & 0xffff) | 0x00f0;
467 	changed = val != ice->gpio.write_mask;
468 	ice->gpio.write_mask = val;
469 	mutex_unlock(&ice->gpio_mutex);
470 	return changed;
471 }
472 
473 static int pontis_gpio_dir_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
474 {
475 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
476 	mutex_lock(&ice->gpio_mutex);
477 	/* 4-7 reserved */
478 	ucontrol->value.integer.value[0] = ice->gpio.direction & 0xff0f;
479 	mutex_unlock(&ice->gpio_mutex);
480 	return 0;
481 }
482 
483 static int pontis_gpio_dir_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
484 {
485 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
486 	unsigned int val;
487 	int changed;
488 	mutex_lock(&ice->gpio_mutex);
489 	/* 4-7 reserved */
490 	val = ucontrol->value.integer.value[0] & 0xff0f;
491 	changed = (val != ice->gpio.direction);
492 	ice->gpio.direction = val;
493 	mutex_unlock(&ice->gpio_mutex);
494 	return changed;
495 }
496 
497 static int pontis_gpio_data_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
498 {
499 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
500 	mutex_lock(&ice->gpio_mutex);
501 	snd_ice1712_gpio_set_dir(ice, ice->gpio.direction);
502 	snd_ice1712_gpio_set_mask(ice, ice->gpio.write_mask);
503 	ucontrol->value.integer.value[0] = snd_ice1712_gpio_read(ice) & 0xffff;
504 	mutex_unlock(&ice->gpio_mutex);
505 	return 0;
506 }
507 
508 static int pontis_gpio_data_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
509 {
510 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
511 	unsigned int val, nval;
512 	int changed = 0;
513 	mutex_lock(&ice->gpio_mutex);
514 	snd_ice1712_gpio_set_dir(ice, ice->gpio.direction);
515 	snd_ice1712_gpio_set_mask(ice, ice->gpio.write_mask);
516 	val = snd_ice1712_gpio_read(ice) & 0xffff;
517 	nval = ucontrol->value.integer.value[0] & 0xffff;
518 	if (val != nval) {
519 		snd_ice1712_gpio_write(ice, nval);
520 		changed = 1;
521 	}
522 	mutex_unlock(&ice->gpio_mutex);
523 	return changed;
524 }
525 
526 static const DECLARE_TLV_DB_SCALE(db_scale_volume, -6400, 50, 1);
527 
528 /*
529  * mixers
530  */
531 
532 static struct snd_kcontrol_new pontis_controls[] = {
533 	{
534 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
535 		.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
536 			   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
537 		.name = "PCM Playback Volume",
538 		.info = wm_dac_vol_info,
539 		.get = wm_dac_vol_get,
540 		.put = wm_dac_vol_put,
541 		.tlv = { .p = db_scale_volume },
542 	},
543 	{
544 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
545 		.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
546 			   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
547 		.name = "Capture Volume",
548 		.info = wm_adc_vol_info,
549 		.get = wm_adc_vol_get,
550 		.put = wm_adc_vol_put,
551 		.tlv = { .p = db_scale_volume },
552 	},
553 	{
554 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
555 		.name = "CD Capture Switch",
556 		.info = wm_adc_mux_info,
557 		.get = wm_adc_mux_get,
558 		.put = wm_adc_mux_put,
559 		.private_value = 0,
560 	},
561 	{
562 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
563 		.name = "Line Capture Switch",
564 		.info = wm_adc_mux_info,
565 		.get = wm_adc_mux_get,
566 		.put = wm_adc_mux_put,
567 		.private_value = 1,
568 	},
569 	{
570 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
571 		.name = "Analog Bypass Switch",
572 		.info = wm_bypass_info,
573 		.get = wm_bypass_get,
574 		.put = wm_bypass_put,
575 	},
576 	{
577 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
578 		.name = "Swap Output Channels",
579 		.info = wm_chswap_info,
580 		.get = wm_chswap_get,
581 		.put = wm_chswap_put,
582 	},
583 	{
584 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
585 		.name = "IEC958 Input Source",
586 		.info = cs_source_info,
587 		.get = cs_source_get,
588 		.put = cs_source_put,
589 	},
590 	/* FIXME: which interface? */
591 	{
592 		.iface = SNDRV_CTL_ELEM_IFACE_CARD,
593 		.name = "GPIO Mask",
594 		.info = pontis_gpio_mask_info,
595 		.get = pontis_gpio_mask_get,
596 		.put = pontis_gpio_mask_put,
597 	},
598 	{
599 		.iface = SNDRV_CTL_ELEM_IFACE_CARD,
600 		.name = "GPIO Direction",
601 		.info = pontis_gpio_mask_info,
602 		.get = pontis_gpio_dir_get,
603 		.put = pontis_gpio_dir_put,
604 	},
605 	{
606 		.iface = SNDRV_CTL_ELEM_IFACE_CARD,
607 		.name = "GPIO Data",
608 		.info = pontis_gpio_mask_info,
609 		.get = pontis_gpio_data_get,
610 		.put = pontis_gpio_data_put,
611 	},
612 };
613 
614 
615 /*
616  * WM codec registers
617  */
618 static void wm_proc_regs_write(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
619 {
620 	struct snd_ice1712 *ice = entry->private_data;
621 	char line[64];
622 	unsigned int reg, val;
623 	mutex_lock(&ice->gpio_mutex);
624 	while (!snd_info_get_line(buffer, line, sizeof(line))) {
625 		if (sscanf(line, "%x %x", &reg, &val) != 2)
626 			continue;
627 		if (reg <= 0x17 && val <= 0xffff)
628 			wm_put(ice, reg, val);
629 	}
630 	mutex_unlock(&ice->gpio_mutex);
631 }
632 
633 static void wm_proc_regs_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
634 {
635 	struct snd_ice1712 *ice = entry->private_data;
636 	int reg, val;
637 
638 	mutex_lock(&ice->gpio_mutex);
639 	for (reg = 0; reg <= 0x17; reg++) {
640 		val = wm_get(ice, reg);
641 		snd_iprintf(buffer, "%02x = %04x\n", reg, val);
642 	}
643 	mutex_unlock(&ice->gpio_mutex);
644 }
645 
646 static void wm_proc_init(struct snd_ice1712 *ice)
647 {
648 	snd_card_rw_proc_new(ice->card, "wm_codec", ice, wm_proc_regs_read,
649 			     wm_proc_regs_write);
650 }
651 
652 static void cs_proc_regs_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
653 {
654 	struct snd_ice1712 *ice = entry->private_data;
655 	int reg, val;
656 
657 	mutex_lock(&ice->gpio_mutex);
658 	for (reg = 0; reg <= 0x26; reg++) {
659 		val = spi_read(ice, CS_DEV, reg);
660 		snd_iprintf(buffer, "%02x = %02x\n", reg, val);
661 	}
662 	val = spi_read(ice, CS_DEV, 0x7f);
663 	snd_iprintf(buffer, "%02x = %02x\n", 0x7f, val);
664 	mutex_unlock(&ice->gpio_mutex);
665 }
666 
667 static void cs_proc_init(struct snd_ice1712 *ice)
668 {
669 	snd_card_ro_proc_new(ice->card, "cs_codec", ice, cs_proc_regs_read);
670 }
671 
672 
673 static int pontis_add_controls(struct snd_ice1712 *ice)
674 {
675 	unsigned int i;
676 	int err;
677 
678 	for (i = 0; i < ARRAY_SIZE(pontis_controls); i++) {
679 		err = snd_ctl_add(ice->card, snd_ctl_new1(&pontis_controls[i], ice));
680 		if (err < 0)
681 			return err;
682 	}
683 
684 	wm_proc_init(ice);
685 	cs_proc_init(ice);
686 
687 	return 0;
688 }
689 
690 
691 /*
692  * initialize the chip
693  */
694 static int pontis_init(struct snd_ice1712 *ice)
695 {
696 	static const unsigned short wm_inits[] = {
697 		/* These come first to reduce init pop noise */
698 		WM_ADC_MUX,	0x00c0,	/* ADC mute */
699 		WM_DAC_MUTE,	0x0001,	/* DAC softmute */
700 		WM_DAC_CTRL1,	0x0000,	/* DAC mute */
701 
702 		WM_POWERDOWN,	0x0008,	/* All power-up except HP */
703 		WM_RESET,	0x0000,	/* reset */
704 	};
705 	static const unsigned short wm_inits2[] = {
706 		WM_MASTER_CTRL,	0x0022,	/* 256fs, slave mode */
707 		WM_DAC_INT,	0x0022,	/* I2S, normal polarity, 24bit */
708 		WM_ADC_INT,	0x0022,	/* I2S, normal polarity, 24bit */
709 		WM_DAC_CTRL1,	0x0090,	/* DAC L/R */
710 		WM_OUT_MUX,	0x0001,	/* OUT DAC */
711 		WM_HP_ATTEN_L,	0x0179,	/* HP 0dB */
712 		WM_HP_ATTEN_R,	0x0179,	/* HP 0dB */
713 		WM_DAC_ATTEN_L,	0x0000,	/* DAC 0dB */
714 		WM_DAC_ATTEN_L,	0x0100,	/* DAC 0dB */
715 		WM_DAC_ATTEN_R,	0x0000,	/* DAC 0dB */
716 		WM_DAC_ATTEN_R,	0x0100,	/* DAC 0dB */
717 		/* WM_DAC_MASTER,	0x0100, */	/* DAC master muted */
718 		WM_PHASE_SWAP,	0x0000,	/* phase normal */
719 		WM_DAC_CTRL2,	0x0000,	/* no deemphasis, no ZFLG */
720 		WM_ADC_ATTEN_L,	0x0000,	/* ADC muted */
721 		WM_ADC_ATTEN_R,	0x0000,	/* ADC muted */
722 #if 0
723 		WM_ALC_CTRL1,	0x007b,	/* */
724 		WM_ALC_CTRL2,	0x0000,	/* */
725 		WM_ALC_CTRL3,	0x0000,	/* */
726 		WM_NOISE_GATE,	0x0000,	/* */
727 #endif
728 		WM_DAC_MUTE,	0x0000,	/* DAC unmute */
729 		WM_ADC_MUX,	0x0003,	/* ADC unmute, both CD/Line On */
730 	};
731 	static const unsigned char cs_inits[] = {
732 		0x04,	0x80,	/* RUN, RXP0 */
733 		0x05,	0x05,	/* slave, 24bit */
734 		0x01,	0x00,
735 		0x02,	0x00,
736 		0x03,	0x00,
737 	};
738 	unsigned int i;
739 
740 	ice->vt1720 = 1;
741 	ice->num_total_dacs = 2;
742 	ice->num_total_adcs = 2;
743 
744 	/* to remember the register values */
745 	ice->akm = kzalloc(sizeof(struct snd_akm4xxx), GFP_KERNEL);
746 	if (! ice->akm)
747 		return -ENOMEM;
748 	ice->akm_codecs = 1;
749 
750 	/* HACK - use this as the SPDIF source.
751 	 * don't call snd_ice1712_gpio_get/put(), otherwise it's overwritten
752 	 */
753 	ice->gpio.saved[0] = 0;
754 
755 	/* initialize WM8776 codec */
756 	for (i = 0; i < ARRAY_SIZE(wm_inits); i += 2)
757 		wm_put(ice, wm_inits[i], wm_inits[i+1]);
758 	schedule_timeout_uninterruptible(1);
759 	for (i = 0; i < ARRAY_SIZE(wm_inits2); i += 2)
760 		wm_put(ice, wm_inits2[i], wm_inits2[i+1]);
761 
762 	/* initialize CS8416 codec */
763 	/* assert PRST#; MT05 bit 7 */
764 	outb(inb(ICEMT1724(ice, AC97_CMD)) | 0x80, ICEMT1724(ice, AC97_CMD));
765 	mdelay(5);
766 	/* deassert PRST# */
767 	outb(inb(ICEMT1724(ice, AC97_CMD)) & ~0x80, ICEMT1724(ice, AC97_CMD));
768 
769 	for (i = 0; i < ARRAY_SIZE(cs_inits); i += 2)
770 		spi_write(ice, CS_DEV, cs_inits[i], cs_inits[i+1]);
771 
772 	return 0;
773 }
774 
775 
776 /*
777  * Pontis boards don't provide the EEPROM data at all.
778  * hence the driver needs to sets up it properly.
779  */
780 
781 static unsigned char pontis_eeprom[] = {
782 	[ICE_EEP2_SYSCONF]     = 0x08,	/* clock 256, mpu401, spdif-in/ADC, 1DAC */
783 	[ICE_EEP2_ACLINK]      = 0x80,	/* I2S */
784 	[ICE_EEP2_I2S]         = 0xf8,	/* vol, 96k, 24bit, 192k */
785 	[ICE_EEP2_SPDIF]       = 0xc3,	/* out-en, out-int, spdif-in */
786 	[ICE_EEP2_GPIO_DIR]    = 0x07,
787 	[ICE_EEP2_GPIO_DIR1]   = 0x00,
788 	[ICE_EEP2_GPIO_DIR2]   = 0x00,	/* ignored */
789 	[ICE_EEP2_GPIO_MASK]   = 0x0f,	/* 4-7 reserved for CS8416 */
790 	[ICE_EEP2_GPIO_MASK1]  = 0xff,
791 	[ICE_EEP2_GPIO_MASK2]  = 0x00,	/* ignored */
792 	[ICE_EEP2_GPIO_STATE]  = 0x06,	/* 0-low, 1-high, 2-high */
793 	[ICE_EEP2_GPIO_STATE1] = 0x00,
794 	[ICE_EEP2_GPIO_STATE2] = 0x00,	/* ignored */
795 };
796 
797 /* entry point */
798 struct snd_ice1712_card_info snd_vt1720_pontis_cards[] = {
799 	{
800 		.subvendor = VT1720_SUBDEVICE_PONTIS_MS300,
801 		.name = "Pontis MS300",
802 		.model = "ms300",
803 		.chip_init = pontis_init,
804 		.build_controls = pontis_add_controls,
805 		.eeprom_size = sizeof(pontis_eeprom),
806 		.eeprom_data = pontis_eeprom,
807 	},
808 	{ } /* terminator */
809 };
810