xref: /openbmc/linux/sound/ppc/awacs.c (revision 6d21fb7d)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * PMac AWACS lowlevel functions
4  *
5  * Copyright (c) by Takashi Iwai <tiwai@suse.de>
6  * code based on dmasound.c.
7  */
8 
9 
10 #include <linux/io.h>
11 #include <asm/nvram.h>
12 #include <linux/init.h>
13 #include <linux/delay.h>
14 #include <linux/of.h>
15 #include <linux/slab.h>
16 #include <sound/core.h>
17 #include "pmac.h"
18 
19 
20 #ifdef CONFIG_ADB_CUDA
21 #define PMAC_AMP_AVAIL
22 #endif
23 
24 #ifdef PMAC_AMP_AVAIL
25 struct awacs_amp {
26 	unsigned char amp_master;
27 	unsigned char amp_vol[2][2];
28 	unsigned char amp_tone[2];
29 };
30 
31 #define CHECK_CUDA_AMP() (sys_ctrler == SYS_CTRLER_CUDA)
32 
33 #endif /* PMAC_AMP_AVAIL */
34 
35 
36 static void snd_pmac_screamer_wait(struct snd_pmac *chip)
37 {
38 	long timeout = 2000;
39 	while (!(in_le32(&chip->awacs->codec_stat) & MASK_VALID)) {
40 		mdelay(1);
41 		if (! --timeout) {
42 			snd_printd("snd_pmac_screamer_wait timeout\n");
43 			break;
44 		}
45 	}
46 }
47 
48 /*
49  * write AWACS register
50  */
51 static void
52 snd_pmac_awacs_write(struct snd_pmac *chip, int val)
53 {
54 	long timeout = 5000000;
55 
56 	if (chip->model == PMAC_SCREAMER)
57 		snd_pmac_screamer_wait(chip);
58 	out_le32(&chip->awacs->codec_ctrl, val | (chip->subframe << 22));
59 	while (in_le32(&chip->awacs->codec_ctrl) & MASK_NEWECMD) {
60 		if (! --timeout) {
61 			snd_printd("snd_pmac_awacs_write timeout\n");
62 			break;
63 		}
64 	}
65 }
66 
67 static void
68 snd_pmac_awacs_write_reg(struct snd_pmac *chip, int reg, int val)
69 {
70 	snd_pmac_awacs_write(chip, val | (reg << 12));
71 	chip->awacs_reg[reg] = val;
72 }
73 
74 static void
75 snd_pmac_awacs_write_noreg(struct snd_pmac *chip, int reg, int val)
76 {
77 	snd_pmac_awacs_write(chip, val | (reg << 12));
78 }
79 
80 #ifdef CONFIG_PM
81 /* Recalibrate chip */
82 static void screamer_recalibrate(struct snd_pmac *chip)
83 {
84 	if (chip->model != PMAC_SCREAMER)
85 		return;
86 
87 	/* Sorry for the horrible delays... I hope to get that improved
88 	 * by making the whole PM process asynchronous in a future version
89 	 */
90 	snd_pmac_awacs_write_noreg(chip, 1, chip->awacs_reg[1]);
91 	if (chip->manufacturer == 0x1)
92 		/* delay for broken crystal part */
93 		msleep(750);
94 	snd_pmac_awacs_write_noreg(chip, 1,
95 				   chip->awacs_reg[1] | MASK_RECALIBRATE |
96 				   MASK_CMUTE | MASK_AMUTE);
97 	snd_pmac_awacs_write_noreg(chip, 1, chip->awacs_reg[1]);
98 	snd_pmac_awacs_write_noreg(chip, 6, chip->awacs_reg[6]);
99 }
100 
101 #else
102 #define screamer_recalibrate(chip) /* NOP */
103 #endif
104 
105 
106 /*
107  * additional callback to set the pcm format
108  */
109 static void snd_pmac_awacs_set_format(struct snd_pmac *chip)
110 {
111 	chip->awacs_reg[1] &= ~MASK_SAMPLERATE;
112 	chip->awacs_reg[1] |= chip->rate_index << 3;
113 	snd_pmac_awacs_write_reg(chip, 1, chip->awacs_reg[1]);
114 }
115 
116 
117 /*
118  * AWACS volume callbacks
119  */
120 /*
121  * volumes: 0-15 stereo
122  */
123 static int snd_pmac_awacs_info_volume(struct snd_kcontrol *kcontrol,
124 				      struct snd_ctl_elem_info *uinfo)
125 {
126 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
127 	uinfo->count = 2;
128 	uinfo->value.integer.min = 0;
129 	uinfo->value.integer.max = 15;
130 	return 0;
131 }
132 
133 static int snd_pmac_awacs_get_volume(struct snd_kcontrol *kcontrol,
134 				     struct snd_ctl_elem_value *ucontrol)
135 {
136 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
137 	int reg = kcontrol->private_value & 0xff;
138 	int lshift = (kcontrol->private_value >> 8) & 0xff;
139 	int inverted = (kcontrol->private_value >> 16) & 1;
140 	unsigned long flags;
141 	int vol[2];
142 
143 	spin_lock_irqsave(&chip->reg_lock, flags);
144 	vol[0] = (chip->awacs_reg[reg] >> lshift) & 0xf;
145 	vol[1] = chip->awacs_reg[reg] & 0xf;
146 	spin_unlock_irqrestore(&chip->reg_lock, flags);
147 	if (inverted) {
148 		vol[0] = 0x0f - vol[0];
149 		vol[1] = 0x0f - vol[1];
150 	}
151 	ucontrol->value.integer.value[0] = vol[0];
152 	ucontrol->value.integer.value[1] = vol[1];
153 	return 0;
154 }
155 
156 static int snd_pmac_awacs_put_volume(struct snd_kcontrol *kcontrol,
157 				     struct snd_ctl_elem_value *ucontrol)
158 {
159 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
160 	int reg = kcontrol->private_value & 0xff;
161 	int lshift = (kcontrol->private_value >> 8) & 0xff;
162 	int inverted = (kcontrol->private_value >> 16) & 1;
163 	int val, oldval;
164 	unsigned long flags;
165 	unsigned int vol[2];
166 
167 	vol[0] = ucontrol->value.integer.value[0];
168 	vol[1] = ucontrol->value.integer.value[1];
169 	if (vol[0] > 0x0f || vol[1] > 0x0f)
170 		return -EINVAL;
171 	if (inverted) {
172 		vol[0] = 0x0f - vol[0];
173 		vol[1] = 0x0f - vol[1];
174 	}
175 	vol[0] &= 0x0f;
176 	vol[1] &= 0x0f;
177 	spin_lock_irqsave(&chip->reg_lock, flags);
178 	oldval = chip->awacs_reg[reg];
179 	val = oldval & ~(0xf | (0xf << lshift));
180 	val |= vol[0] << lshift;
181 	val |= vol[1];
182 	if (oldval != val)
183 		snd_pmac_awacs_write_reg(chip, reg, val);
184 	spin_unlock_irqrestore(&chip->reg_lock, flags);
185 	return oldval != reg;
186 }
187 
188 
189 #define AWACS_VOLUME(xname, xreg, xshift, xinverted) \
190 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = 0, \
191   .info = snd_pmac_awacs_info_volume, \
192   .get = snd_pmac_awacs_get_volume, \
193   .put = snd_pmac_awacs_put_volume, \
194   .private_value = (xreg) | ((xshift) << 8) | ((xinverted) << 16) }
195 
196 /*
197  * mute master/ogain for AWACS: mono
198  */
199 static int snd_pmac_awacs_get_switch(struct snd_kcontrol *kcontrol,
200 				     struct snd_ctl_elem_value *ucontrol)
201 {
202 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
203 	int reg = kcontrol->private_value & 0xff;
204 	int shift = (kcontrol->private_value >> 8) & 0xff;
205 	int invert = (kcontrol->private_value >> 16) & 1;
206 	int val;
207 	unsigned long flags;
208 
209 	spin_lock_irqsave(&chip->reg_lock, flags);
210 	val = (chip->awacs_reg[reg] >> shift) & 1;
211 	spin_unlock_irqrestore(&chip->reg_lock, flags);
212 	if (invert)
213 		val = 1 - val;
214 	ucontrol->value.integer.value[0] = val;
215 	return 0;
216 }
217 
218 static int snd_pmac_awacs_put_switch(struct snd_kcontrol *kcontrol,
219 				     struct snd_ctl_elem_value *ucontrol)
220 {
221 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
222 	int reg = kcontrol->private_value & 0xff;
223 	int shift = (kcontrol->private_value >> 8) & 0xff;
224 	int invert = (kcontrol->private_value >> 16) & 1;
225 	int mask = 1 << shift;
226 	int val, changed;
227 	unsigned long flags;
228 
229 	spin_lock_irqsave(&chip->reg_lock, flags);
230 	val = chip->awacs_reg[reg] & ~mask;
231 	if (ucontrol->value.integer.value[0] != invert)
232 		val |= mask;
233 	changed = chip->awacs_reg[reg] != val;
234 	if (changed)
235 		snd_pmac_awacs_write_reg(chip, reg, val);
236 	spin_unlock_irqrestore(&chip->reg_lock, flags);
237 	return changed;
238 }
239 
240 #define AWACS_SWITCH(xname, xreg, xshift, xinvert) \
241 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = 0, \
242   .info = snd_pmac_boolean_mono_info, \
243   .get = snd_pmac_awacs_get_switch, \
244   .put = snd_pmac_awacs_put_switch, \
245   .private_value = (xreg) | ((xshift) << 8) | ((xinvert) << 16) }
246 
247 
248 #ifdef PMAC_AMP_AVAIL
249 /*
250  * controls for perch/whisper extension cards, e.g. G3 desktop
251  *
252  * TDA7433 connected via i2c address 0x45 (= 0x8a),
253  * accessed through cuda
254  */
255 static void awacs_set_cuda(int reg, int val)
256 {
257 	struct adb_request req;
258 	cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_GET_SET_IIC, 0x8a,
259 			reg, val);
260 	while (! req.complete)
261 		cuda_poll();
262 }
263 
264 /*
265  * level = 0 - 14, 7 = 0 dB
266  */
267 static void awacs_amp_set_tone(struct awacs_amp *amp, int bass, int treble)
268 {
269 	amp->amp_tone[0] = bass;
270 	amp->amp_tone[1] = treble;
271 	if (bass > 7)
272 		bass = (14 - bass) + 8;
273 	if (treble > 7)
274 		treble = (14 - treble) + 8;
275 	awacs_set_cuda(2, (bass << 4) | treble);
276 }
277 
278 /*
279  * vol = 0 - 31 (attenuation), 32 = mute bit, stereo
280  */
281 static int awacs_amp_set_vol(struct awacs_amp *amp, int index,
282 			     int lvol, int rvol, int do_check)
283 {
284 	if (do_check && amp->amp_vol[index][0] == lvol &&
285 			amp->amp_vol[index][1] == rvol)
286 		return 0;
287 	awacs_set_cuda(3 + index, lvol);
288 	awacs_set_cuda(5 + index, rvol);
289 	amp->amp_vol[index][0] = lvol;
290 	amp->amp_vol[index][1] = rvol;
291 	return 1;
292 }
293 
294 /*
295  * 0 = -79 dB, 79 = 0 dB, 99 = +20 dB
296  */
297 static void awacs_amp_set_master(struct awacs_amp *amp, int vol)
298 {
299 	amp->amp_master = vol;
300 	if (vol <= 79)
301 		vol = 32 + (79 - vol);
302 	else
303 		vol = 32 - (vol - 79);
304 	awacs_set_cuda(1, vol);
305 }
306 
307 static void awacs_amp_free(struct snd_pmac *chip)
308 {
309 	struct awacs_amp *amp = chip->mixer_data;
310 	if (!amp)
311 		return;
312 	kfree(amp);
313 	chip->mixer_data = NULL;
314 	chip->mixer_free = NULL;
315 }
316 
317 
318 /*
319  * mixer controls
320  */
321 static int snd_pmac_awacs_info_volume_amp(struct snd_kcontrol *kcontrol,
322 					  struct snd_ctl_elem_info *uinfo)
323 {
324 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
325 	uinfo->count = 2;
326 	uinfo->value.integer.min = 0;
327 	uinfo->value.integer.max = 31;
328 	return 0;
329 }
330 
331 static int snd_pmac_awacs_get_volume_amp(struct snd_kcontrol *kcontrol,
332 					 struct snd_ctl_elem_value *ucontrol)
333 {
334 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
335 	int index = kcontrol->private_value;
336 	struct awacs_amp *amp = chip->mixer_data;
337 
338 	ucontrol->value.integer.value[0] = 31 - (amp->amp_vol[index][0] & 31);
339 	ucontrol->value.integer.value[1] = 31 - (amp->amp_vol[index][1] & 31);
340 	return 0;
341 }
342 
343 static int snd_pmac_awacs_put_volume_amp(struct snd_kcontrol *kcontrol,
344 					 struct snd_ctl_elem_value *ucontrol)
345 {
346 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
347 	int index = kcontrol->private_value;
348 	int vol[2];
349 	struct awacs_amp *amp = chip->mixer_data;
350 
351 	vol[0] = (31 - (ucontrol->value.integer.value[0] & 31))
352 		| (amp->amp_vol[index][0] & 32);
353 	vol[1] = (31 - (ucontrol->value.integer.value[1] & 31))
354 		| (amp->amp_vol[index][1] & 32);
355 	return awacs_amp_set_vol(amp, index, vol[0], vol[1], 1);
356 }
357 
358 static int snd_pmac_awacs_get_switch_amp(struct snd_kcontrol *kcontrol,
359 					 struct snd_ctl_elem_value *ucontrol)
360 {
361 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
362 	int index = kcontrol->private_value;
363 	struct awacs_amp *amp = chip->mixer_data;
364 
365 	ucontrol->value.integer.value[0] = (amp->amp_vol[index][0] & 32)
366 					? 0 : 1;
367 	ucontrol->value.integer.value[1] = (amp->amp_vol[index][1] & 32)
368 					? 0 : 1;
369 	return 0;
370 }
371 
372 static int snd_pmac_awacs_put_switch_amp(struct snd_kcontrol *kcontrol,
373 					 struct snd_ctl_elem_value *ucontrol)
374 {
375 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
376 	int index = kcontrol->private_value;
377 	int vol[2];
378 	struct awacs_amp *amp = chip->mixer_data;
379 
380 	vol[0] = (ucontrol->value.integer.value[0] ? 0 : 32)
381 		| (amp->amp_vol[index][0] & 31);
382 	vol[1] = (ucontrol->value.integer.value[1] ? 0 : 32)
383 		| (amp->amp_vol[index][1] & 31);
384 	return awacs_amp_set_vol(amp, index, vol[0], vol[1], 1);
385 }
386 
387 static int snd_pmac_awacs_info_tone_amp(struct snd_kcontrol *kcontrol,
388 					struct snd_ctl_elem_info *uinfo)
389 {
390 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
391 	uinfo->count = 1;
392 	uinfo->value.integer.min = 0;
393 	uinfo->value.integer.max = 14;
394 	return 0;
395 }
396 
397 static int snd_pmac_awacs_get_tone_amp(struct snd_kcontrol *kcontrol,
398 				       struct snd_ctl_elem_value *ucontrol)
399 {
400 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
401 	int index = kcontrol->private_value;
402 	struct awacs_amp *amp = chip->mixer_data;
403 
404 	ucontrol->value.integer.value[0] = amp->amp_tone[index];
405 	return 0;
406 }
407 
408 static int snd_pmac_awacs_put_tone_amp(struct snd_kcontrol *kcontrol,
409 				       struct snd_ctl_elem_value *ucontrol)
410 {
411 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
412 	int index = kcontrol->private_value;
413 	struct awacs_amp *amp = chip->mixer_data;
414 	unsigned int val;
415 
416 	val = ucontrol->value.integer.value[0];
417 	if (val > 14)
418 		return -EINVAL;
419 	if (val != amp->amp_tone[index]) {
420 		amp->amp_tone[index] = val;
421 		awacs_amp_set_tone(amp, amp->amp_tone[0], amp->amp_tone[1]);
422 		return 1;
423 	}
424 	return 0;
425 }
426 
427 static int snd_pmac_awacs_info_master_amp(struct snd_kcontrol *kcontrol,
428 					  struct snd_ctl_elem_info *uinfo)
429 {
430 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
431 	uinfo->count = 1;
432 	uinfo->value.integer.min = 0;
433 	uinfo->value.integer.max = 99;
434 	return 0;
435 }
436 
437 static int snd_pmac_awacs_get_master_amp(struct snd_kcontrol *kcontrol,
438 					 struct snd_ctl_elem_value *ucontrol)
439 {
440 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
441 	struct awacs_amp *amp = chip->mixer_data;
442 
443 	ucontrol->value.integer.value[0] = amp->amp_master;
444 	return 0;
445 }
446 
447 static int snd_pmac_awacs_put_master_amp(struct snd_kcontrol *kcontrol,
448 					 struct snd_ctl_elem_value *ucontrol)
449 {
450 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
451 	struct awacs_amp *amp = chip->mixer_data;
452 	unsigned int val;
453 
454 	val = ucontrol->value.integer.value[0];
455 	if (val > 99)
456 		return -EINVAL;
457 	if (val != amp->amp_master) {
458 		amp->amp_master = val;
459 		awacs_amp_set_master(amp, amp->amp_master);
460 		return 1;
461 	}
462 	return 0;
463 }
464 
465 #define AMP_CH_SPK	0
466 #define AMP_CH_HD	1
467 
468 static const struct snd_kcontrol_new snd_pmac_awacs_amp_vol[] = {
469 	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
470 	  .name = "Speaker Playback Volume",
471 	  .info = snd_pmac_awacs_info_volume_amp,
472 	  .get = snd_pmac_awacs_get_volume_amp,
473 	  .put = snd_pmac_awacs_put_volume_amp,
474 	  .private_value = AMP_CH_SPK,
475 	},
476 	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
477 	  .name = "Headphone Playback Volume",
478 	  .info = snd_pmac_awacs_info_volume_amp,
479 	  .get = snd_pmac_awacs_get_volume_amp,
480 	  .put = snd_pmac_awacs_put_volume_amp,
481 	  .private_value = AMP_CH_HD,
482 	},
483 	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
484 	  .name = "Tone Control - Bass",
485 	  .info = snd_pmac_awacs_info_tone_amp,
486 	  .get = snd_pmac_awacs_get_tone_amp,
487 	  .put = snd_pmac_awacs_put_tone_amp,
488 	  .private_value = 0,
489 	},
490 	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
491 	  .name = "Tone Control - Treble",
492 	  .info = snd_pmac_awacs_info_tone_amp,
493 	  .get = snd_pmac_awacs_get_tone_amp,
494 	  .put = snd_pmac_awacs_put_tone_amp,
495 	  .private_value = 1,
496 	},
497 	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
498 	  .name = "Amp Master Playback Volume",
499 	  .info = snd_pmac_awacs_info_master_amp,
500 	  .get = snd_pmac_awacs_get_master_amp,
501 	  .put = snd_pmac_awacs_put_master_amp,
502 	},
503 };
504 
505 static const struct snd_kcontrol_new snd_pmac_awacs_amp_hp_sw = {
506 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
507 	.name = "Headphone Playback Switch",
508 	.info = snd_pmac_boolean_stereo_info,
509 	.get = snd_pmac_awacs_get_switch_amp,
510 	.put = snd_pmac_awacs_put_switch_amp,
511 	.private_value = AMP_CH_HD,
512 };
513 
514 static const struct snd_kcontrol_new snd_pmac_awacs_amp_spk_sw = {
515 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
516 	.name = "Speaker Playback Switch",
517 	.info = snd_pmac_boolean_stereo_info,
518 	.get = snd_pmac_awacs_get_switch_amp,
519 	.put = snd_pmac_awacs_put_switch_amp,
520 	.private_value = AMP_CH_SPK,
521 };
522 
523 #endif /* PMAC_AMP_AVAIL */
524 
525 
526 /*
527  * mic boost for screamer
528  */
529 static int snd_pmac_screamer_mic_boost_info(struct snd_kcontrol *kcontrol,
530 					    struct snd_ctl_elem_info *uinfo)
531 {
532 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
533 	uinfo->count = 1;
534 	uinfo->value.integer.min = 0;
535 	uinfo->value.integer.max = 3;
536 	return 0;
537 }
538 
539 static int snd_pmac_screamer_mic_boost_get(struct snd_kcontrol *kcontrol,
540 					   struct snd_ctl_elem_value *ucontrol)
541 {
542 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
543 	int val = 0;
544 	unsigned long flags;
545 
546 	spin_lock_irqsave(&chip->reg_lock, flags);
547 	if (chip->awacs_reg[6] & MASK_MIC_BOOST)
548 		val |= 2;
549 	if (chip->awacs_reg[0] & MASK_GAINLINE)
550 		val |= 1;
551 	spin_unlock_irqrestore(&chip->reg_lock, flags);
552 	ucontrol->value.integer.value[0] = val;
553 	return 0;
554 }
555 
556 static int snd_pmac_screamer_mic_boost_put(struct snd_kcontrol *kcontrol,
557 					   struct snd_ctl_elem_value *ucontrol)
558 {
559 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
560 	int changed = 0;
561 	int val0, val6;
562 	unsigned long flags;
563 
564 	spin_lock_irqsave(&chip->reg_lock, flags);
565 	val0 = chip->awacs_reg[0] & ~MASK_GAINLINE;
566 	val6 = chip->awacs_reg[6] & ~MASK_MIC_BOOST;
567 	if (ucontrol->value.integer.value[0] & 1)
568 		val0 |= MASK_GAINLINE;
569 	if (ucontrol->value.integer.value[0] & 2)
570 		val6 |= MASK_MIC_BOOST;
571 	if (val0 != chip->awacs_reg[0]) {
572 		snd_pmac_awacs_write_reg(chip, 0, val0);
573 		changed = 1;
574 	}
575 	if (val6 != chip->awacs_reg[6]) {
576 		snd_pmac_awacs_write_reg(chip, 6, val6);
577 		changed = 1;
578 	}
579 	spin_unlock_irqrestore(&chip->reg_lock, flags);
580 	return changed;
581 }
582 
583 /*
584  * lists of mixer elements
585  */
586 static const struct snd_kcontrol_new snd_pmac_awacs_mixers[] = {
587 	AWACS_SWITCH("Master Capture Switch", 1, SHIFT_LOOPTHRU, 0),
588 	AWACS_VOLUME("Master Capture Volume", 0, 4, 0),
589 /*	AWACS_SWITCH("Unknown Playback Switch", 6, SHIFT_PAROUT0, 0), */
590 };
591 
592 static const struct snd_kcontrol_new snd_pmac_screamer_mixers_beige[] = {
593 	AWACS_VOLUME("Master Playback Volume", 2, 6, 1),
594 	AWACS_VOLUME("Play-through Playback Volume", 5, 6, 1),
595 	AWACS_SWITCH("Line Capture Switch", 0, SHIFT_MUX_MIC, 0),
596 	AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_LINE, 0),
597 };
598 
599 static const struct snd_kcontrol_new snd_pmac_screamer_mixers_lo[] = {
600 	AWACS_VOLUME("Line out Playback Volume", 2, 6, 1),
601 };
602 
603 static const struct snd_kcontrol_new snd_pmac_screamer_mixers_imac[] = {
604 	AWACS_VOLUME("Play-through Playback Volume", 5, 6, 1),
605 	AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_CD, 0),
606 };
607 
608 static const struct snd_kcontrol_new snd_pmac_screamer_mixers_g4agp[] = {
609 	AWACS_VOLUME("Line out Playback Volume", 2, 6, 1),
610 	AWACS_VOLUME("Master Playback Volume", 5, 6, 1),
611 	AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_CD, 0),
612 	AWACS_SWITCH("Line Capture Switch", 0, SHIFT_MUX_MIC, 0),
613 };
614 
615 static const struct snd_kcontrol_new snd_pmac_awacs_mixers_pmac7500[] = {
616 	AWACS_VOLUME("Line out Playback Volume", 2, 6, 1),
617 	AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_CD, 0),
618 	AWACS_SWITCH("Line Capture Switch", 0, SHIFT_MUX_MIC, 0),
619 };
620 
621 static const struct snd_kcontrol_new snd_pmac_awacs_mixers_pmac5500[] = {
622 	AWACS_VOLUME("Headphone Playback Volume", 2, 6, 1),
623 };
624 
625 static const struct snd_kcontrol_new snd_pmac_awacs_mixers_pmac[] = {
626 	AWACS_VOLUME("Master Playback Volume", 2, 6, 1),
627 	AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_CD, 0),
628 };
629 
630 /* FIXME: is this correct order?
631  * screamer (powerbook G3 pismo) seems to have different bits...
632  */
633 static const struct snd_kcontrol_new snd_pmac_awacs_mixers2[] = {
634 	AWACS_SWITCH("Line Capture Switch", 0, SHIFT_MUX_LINE, 0),
635 	AWACS_SWITCH("Mic Capture Switch", 0, SHIFT_MUX_MIC, 0),
636 };
637 
638 static const struct snd_kcontrol_new snd_pmac_screamer_mixers2[] = {
639 	AWACS_SWITCH("Line Capture Switch", 0, SHIFT_MUX_MIC, 0),
640 	AWACS_SWITCH("Mic Capture Switch", 0, SHIFT_MUX_LINE, 0),
641 };
642 
643 static const struct snd_kcontrol_new snd_pmac_awacs_mixers2_pmac5500[] = {
644 	AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_CD, 0),
645 };
646 
647 static const struct snd_kcontrol_new snd_pmac_awacs_master_sw =
648 AWACS_SWITCH("Master Playback Switch", 1, SHIFT_HDMUTE, 1);
649 
650 static const struct snd_kcontrol_new snd_pmac_awacs_master_sw_imac =
651 AWACS_SWITCH("Line out Playback Switch", 1, SHIFT_HDMUTE, 1);
652 
653 static const struct snd_kcontrol_new snd_pmac_awacs_master_sw_pmac5500 =
654 AWACS_SWITCH("Headphone Playback Switch", 1, SHIFT_HDMUTE, 1);
655 
656 static const struct snd_kcontrol_new snd_pmac_awacs_mic_boost[] = {
657 	AWACS_SWITCH("Mic Boost Capture Switch", 0, SHIFT_GAINLINE, 0),
658 };
659 
660 static const struct snd_kcontrol_new snd_pmac_screamer_mic_boost[] = {
661 	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
662 	  .name = "Mic Boost Capture Volume",
663 	  .info = snd_pmac_screamer_mic_boost_info,
664 	  .get = snd_pmac_screamer_mic_boost_get,
665 	  .put = snd_pmac_screamer_mic_boost_put,
666 	},
667 };
668 
669 static const struct snd_kcontrol_new snd_pmac_awacs_mic_boost_pmac7500[] =
670 {
671 	AWACS_SWITCH("Line Boost Capture Switch", 0, SHIFT_GAINLINE, 0),
672 };
673 
674 static const struct snd_kcontrol_new snd_pmac_screamer_mic_boost_beige[] =
675 {
676 	AWACS_SWITCH("Line Boost Capture Switch", 0, SHIFT_GAINLINE, 0),
677 	AWACS_SWITCH("CD Boost Capture Switch", 6, SHIFT_MIC_BOOST, 0),
678 };
679 
680 static const struct snd_kcontrol_new snd_pmac_screamer_mic_boost_imac[] =
681 {
682 	AWACS_SWITCH("Line Boost Capture Switch", 0, SHIFT_GAINLINE, 0),
683 	AWACS_SWITCH("Mic Boost Capture Switch", 6, SHIFT_MIC_BOOST, 0),
684 };
685 
686 static const struct snd_kcontrol_new snd_pmac_awacs_speaker_vol[] = {
687 	AWACS_VOLUME("Speaker Playback Volume", 4, 6, 1),
688 };
689 
690 static const struct snd_kcontrol_new snd_pmac_awacs_speaker_sw =
691 AWACS_SWITCH("Speaker Playback Switch", 1, SHIFT_SPKMUTE, 1);
692 
693 static const struct snd_kcontrol_new snd_pmac_awacs_speaker_sw_imac1 =
694 AWACS_SWITCH("Speaker Playback Switch", 1, SHIFT_PAROUT1, 1);
695 
696 static const struct snd_kcontrol_new snd_pmac_awacs_speaker_sw_imac2 =
697 AWACS_SWITCH("Speaker Playback Switch", 1, SHIFT_PAROUT1, 0);
698 
699 
700 /*
701  * add new mixer elements to the card
702  */
703 static int build_mixers(struct snd_pmac *chip, int nums,
704 			const struct snd_kcontrol_new *mixers)
705 {
706 	int i, err;
707 
708 	for (i = 0; i < nums; i++) {
709 		err = snd_ctl_add(chip->card, snd_ctl_new1(&mixers[i], chip));
710 		if (err < 0)
711 			return err;
712 	}
713 	return 0;
714 }
715 
716 
717 /*
718  * restore all registers
719  */
720 static void awacs_restore_all_regs(struct snd_pmac *chip)
721 {
722 	snd_pmac_awacs_write_noreg(chip, 0, chip->awacs_reg[0]);
723 	snd_pmac_awacs_write_noreg(chip, 1, chip->awacs_reg[1]);
724 	snd_pmac_awacs_write_noreg(chip, 2, chip->awacs_reg[2]);
725 	snd_pmac_awacs_write_noreg(chip, 4, chip->awacs_reg[4]);
726 	if (chip->model == PMAC_SCREAMER) {
727 		snd_pmac_awacs_write_noreg(chip, 5, chip->awacs_reg[5]);
728 		snd_pmac_awacs_write_noreg(chip, 6, chip->awacs_reg[6]);
729 		snd_pmac_awacs_write_noreg(chip, 7, chip->awacs_reg[7]);
730 	}
731 }
732 
733 #ifdef CONFIG_PM
734 static void snd_pmac_awacs_suspend(struct snd_pmac *chip)
735 {
736 	snd_pmac_awacs_write_noreg(chip, 1, (chip->awacs_reg[1]
737 					     | MASK_AMUTE | MASK_CMUTE));
738 }
739 
740 static void snd_pmac_awacs_resume(struct snd_pmac *chip)
741 {
742 	if (of_machine_is_compatible("PowerBook3,1")
743 	    || of_machine_is_compatible("PowerBook3,2")) {
744 		msleep(100);
745 		snd_pmac_awacs_write_reg(chip, 1,
746 			chip->awacs_reg[1] & ~MASK_PAROUT);
747 		msleep(300);
748 	}
749 
750 	awacs_restore_all_regs(chip);
751 	if (chip->model == PMAC_SCREAMER) {
752 		/* reset power bits in reg 6 */
753 		mdelay(5);
754 		snd_pmac_awacs_write_noreg(chip, 6, chip->awacs_reg[6]);
755 	}
756 	screamer_recalibrate(chip);
757 #ifdef PMAC_AMP_AVAIL
758 	if (chip->mixer_data) {
759 		struct awacs_amp *amp = chip->mixer_data;
760 		awacs_amp_set_vol(amp, 0,
761 				  amp->amp_vol[0][0], amp->amp_vol[0][1], 0);
762 		awacs_amp_set_vol(amp, 1,
763 				  amp->amp_vol[1][0], amp->amp_vol[1][1], 0);
764 		awacs_amp_set_tone(amp, amp->amp_tone[0], amp->amp_tone[1]);
765 		awacs_amp_set_master(amp, amp->amp_master);
766 	}
767 #endif
768 }
769 #endif /* CONFIG_PM */
770 
771 #define IS_PM7500 (of_machine_is_compatible("AAPL,7500") \
772 		|| of_machine_is_compatible("AAPL,8500") \
773 		|| of_machine_is_compatible("AAPL,9500"))
774 #define IS_PM5500 (of_machine_is_compatible("AAPL,e411"))
775 #define IS_BEIGE (of_machine_is_compatible("AAPL,Gossamer"))
776 #define IS_IMAC1 (of_machine_is_compatible("PowerMac2,1"))
777 #define IS_IMAC2 (of_machine_is_compatible("PowerMac2,2") \
778 		|| of_machine_is_compatible("PowerMac4,1"))
779 #define IS_G4AGP (of_machine_is_compatible("PowerMac3,1"))
780 #define IS_LOMBARD (of_machine_is_compatible("PowerBook1,1"))
781 
782 static int imac1, imac2;
783 
784 #ifdef PMAC_SUPPORT_AUTOMUTE
785 /*
786  * auto-mute stuffs
787  */
788 static int snd_pmac_awacs_detect_headphone(struct snd_pmac *chip)
789 {
790 	return (in_le32(&chip->awacs->codec_stat) & chip->hp_stat_mask) ? 1 : 0;
791 }
792 
793 #ifdef PMAC_AMP_AVAIL
794 static int toggle_amp_mute(struct awacs_amp *amp, int index, int mute)
795 {
796 	int vol[2];
797 	vol[0] = amp->amp_vol[index][0] & 31;
798 	vol[1] = amp->amp_vol[index][1] & 31;
799 	if (mute) {
800 		vol[0] |= 32;
801 		vol[1] |= 32;
802 	}
803 	return awacs_amp_set_vol(amp, index, vol[0], vol[1], 1);
804 }
805 #endif
806 
807 static void snd_pmac_awacs_update_automute(struct snd_pmac *chip, int do_notify)
808 {
809 	if (chip->auto_mute) {
810 #ifdef PMAC_AMP_AVAIL
811 		if (chip->mixer_data) {
812 			struct awacs_amp *amp = chip->mixer_data;
813 			int changed;
814 			if (snd_pmac_awacs_detect_headphone(chip)) {
815 				changed = toggle_amp_mute(amp, AMP_CH_HD, 0);
816 				changed |= toggle_amp_mute(amp, AMP_CH_SPK, 1);
817 			} else {
818 				changed = toggle_amp_mute(amp, AMP_CH_HD, 1);
819 				changed |= toggle_amp_mute(amp, AMP_CH_SPK, 0);
820 			}
821 			if (do_notify && ! changed)
822 				return;
823 		} else
824 #endif
825 		{
826 			int reg = chip->awacs_reg[1]
827 				| (MASK_HDMUTE | MASK_SPKMUTE);
828 			if (imac1) {
829 				reg &= ~MASK_SPKMUTE;
830 				reg |= MASK_PAROUT1;
831 			} else if (imac2) {
832 				reg &= ~MASK_SPKMUTE;
833 				reg &= ~MASK_PAROUT1;
834 			}
835 			if (snd_pmac_awacs_detect_headphone(chip))
836 				reg &= ~MASK_HDMUTE;
837 			else if (imac1)
838 				reg &= ~MASK_PAROUT1;
839 			else if (imac2)
840 				reg |= MASK_PAROUT1;
841 			else
842 				reg &= ~MASK_SPKMUTE;
843 			if (do_notify && reg == chip->awacs_reg[1])
844 				return;
845 			snd_pmac_awacs_write_reg(chip, 1, reg);
846 		}
847 		if (do_notify) {
848 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
849 				       &chip->master_sw_ctl->id);
850 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
851 				       &chip->speaker_sw_ctl->id);
852 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
853 				       &chip->hp_detect_ctl->id);
854 		}
855 	}
856 }
857 #endif /* PMAC_SUPPORT_AUTOMUTE */
858 
859 
860 /*
861  * initialize chip
862  */
863 int
864 snd_pmac_awacs_init(struct snd_pmac *chip)
865 {
866 	int pm7500 = IS_PM7500;
867 	int pm5500 = IS_PM5500;
868 	int beige = IS_BEIGE;
869 	int g4agp = IS_G4AGP;
870 	int lombard = IS_LOMBARD;
871 	int imac;
872 	int err, vol;
873 	struct snd_kcontrol *vmaster_sw, *vmaster_vol;
874 	struct snd_kcontrol *master_vol, *speaker_vol;
875 
876 	imac1 = IS_IMAC1;
877 	imac2 = IS_IMAC2;
878 	imac = imac1 || imac2;
879 	/* looks like MASK_GAINLINE triggers something, so we set here
880 	 * as start-up
881 	 */
882 	chip->awacs_reg[0] = MASK_MUX_CD | 0xff | MASK_GAINLINE;
883 	chip->awacs_reg[1] = MASK_CMUTE | MASK_AMUTE;
884 	/* FIXME: Only machines with external SRS module need MASK_PAROUT */
885 	if (chip->has_iic || chip->device_id == 0x5 ||
886 	    /* chip->_device_id == 0x8 || */
887 	    chip->device_id == 0xb)
888 		chip->awacs_reg[1] |= MASK_PAROUT;
889 	/* get default volume from nvram */
890 	// vol = (~nvram_read_byte(0x1308) & 7) << 1;
891 	// vol = ((pmac_xpram_read( 8 ) & 7 ) << 1 );
892 	vol = 0x0f; /* no, on alsa, muted as default */
893 	vol = vol + (vol << 6);
894 	chip->awacs_reg[2] = vol;
895 	chip->awacs_reg[4] = vol;
896 	if (chip->model == PMAC_SCREAMER) {
897 		/* FIXME: screamer has loopthru vol control */
898 		chip->awacs_reg[5] = vol;
899 		/* FIXME: maybe should be vol << 3 for PCMCIA speaker */
900 		chip->awacs_reg[6] = MASK_MIC_BOOST;
901 		chip->awacs_reg[7] = 0;
902 	}
903 
904 	awacs_restore_all_regs(chip);
905 	chip->manufacturer = (in_le32(&chip->awacs->codec_stat) >> 8) & 0xf;
906 	screamer_recalibrate(chip);
907 
908 	chip->revision = (in_le32(&chip->awacs->codec_stat) >> 12) & 0xf;
909 #ifdef PMAC_AMP_AVAIL
910 	if (chip->revision == 3 && chip->has_iic && CHECK_CUDA_AMP()) {
911 		struct awacs_amp *amp = kzalloc(sizeof(*amp), GFP_KERNEL);
912 		if (! amp)
913 			return -ENOMEM;
914 		chip->mixer_data = amp;
915 		chip->mixer_free = awacs_amp_free;
916 		/* mute and zero vol */
917 		awacs_amp_set_vol(amp, 0, 63, 63, 0);
918 		awacs_amp_set_vol(amp, 1, 63, 63, 0);
919 		awacs_amp_set_tone(amp, 7, 7); /* 0 dB */
920 		awacs_amp_set_master(amp, 79); /* 0 dB */
921 	}
922 #endif /* PMAC_AMP_AVAIL */
923 
924 	if (chip->hp_stat_mask == 0) {
925 		/* set headphone-jack detection bit */
926 		switch (chip->model) {
927 		case PMAC_AWACS:
928 			chip->hp_stat_mask = pm7500 || pm5500 ? MASK_HDPCONN
929 				: MASK_LOCONN;
930 			break;
931 		case PMAC_SCREAMER:
932 			switch (chip->device_id) {
933 			case 0x08:
934 			case 0x0B:
935 				chip->hp_stat_mask = imac
936 					? MASK_LOCONN_IMAC |
937 					MASK_HDPLCONN_IMAC |
938 					MASK_HDPRCONN_IMAC
939 					: MASK_HDPCONN;
940 				break;
941 			case 0x00:
942 			case 0x05:
943 				chip->hp_stat_mask = MASK_LOCONN;
944 				break;
945 			default:
946 				chip->hp_stat_mask = MASK_HDPCONN;
947 				break;
948 			}
949 			break;
950 		default:
951 			snd_BUG();
952 			break;
953 		}
954 	}
955 
956 	/*
957 	 * build mixers
958 	 */
959 	strcpy(chip->card->mixername, "PowerMac AWACS");
960 
961 	err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_mixers),
962 				snd_pmac_awacs_mixers);
963 	if (err < 0)
964 		return err;
965 	if (beige || g4agp)
966 		;
967 	else if (chip->model == PMAC_SCREAMER || pm5500)
968 		err = build_mixers(chip, ARRAY_SIZE(snd_pmac_screamer_mixers2),
969 				   snd_pmac_screamer_mixers2);
970 	else if (!pm7500)
971 		err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_mixers2),
972 				   snd_pmac_awacs_mixers2);
973 	if (err < 0)
974 		return err;
975 	if (pm5500) {
976 		err = build_mixers(chip,
977 				   ARRAY_SIZE(snd_pmac_awacs_mixers2_pmac5500),
978 				   snd_pmac_awacs_mixers2_pmac5500);
979 		if (err < 0)
980 			return err;
981 	}
982 	master_vol = NULL;
983 	if (pm7500)
984 		err = build_mixers(chip,
985 				   ARRAY_SIZE(snd_pmac_awacs_mixers_pmac7500),
986 				   snd_pmac_awacs_mixers_pmac7500);
987 	else if (pm5500)
988 		err = snd_ctl_add(chip->card,
989 		    (master_vol = snd_ctl_new1(snd_pmac_awacs_mixers_pmac5500,
990 						chip)));
991 	else if (beige)
992 		err = build_mixers(chip,
993 				   ARRAY_SIZE(snd_pmac_screamer_mixers_beige),
994 				   snd_pmac_screamer_mixers_beige);
995 	else if (imac || lombard) {
996 		err = snd_ctl_add(chip->card,
997 		    (master_vol = snd_ctl_new1(snd_pmac_screamer_mixers_lo,
998 						chip)));
999 		if (err < 0)
1000 			return err;
1001 		err = build_mixers(chip,
1002 				   ARRAY_SIZE(snd_pmac_screamer_mixers_imac),
1003 				   snd_pmac_screamer_mixers_imac);
1004 	} else if (g4agp)
1005 		err = build_mixers(chip,
1006 				   ARRAY_SIZE(snd_pmac_screamer_mixers_g4agp),
1007 				   snd_pmac_screamer_mixers_g4agp);
1008 	else
1009 		err = build_mixers(chip,
1010 				   ARRAY_SIZE(snd_pmac_awacs_mixers_pmac),
1011 				   snd_pmac_awacs_mixers_pmac);
1012 	if (err < 0)
1013 		return err;
1014 	chip->master_sw_ctl = snd_ctl_new1((pm7500 || imac || g4agp || lombard)
1015 			? &snd_pmac_awacs_master_sw_imac
1016 			: pm5500
1017 			? &snd_pmac_awacs_master_sw_pmac5500
1018 			: &snd_pmac_awacs_master_sw, chip);
1019 	err = snd_ctl_add(chip->card, chip->master_sw_ctl);
1020 	if (err < 0)
1021 		return err;
1022 #ifdef PMAC_AMP_AVAIL
1023 	if (chip->mixer_data) {
1024 		/* use amplifier.  the signal is connected from route A
1025 		 * to the amp.  the amp has its headphone and speaker
1026 		 * volumes and mute switches, so we use them instead of
1027 		 * screamer registers.
1028 		 * in this case, it seems the route C is not used.
1029 		 */
1030 		err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_amp_vol),
1031 					snd_pmac_awacs_amp_vol);
1032 		if (err < 0)
1033 			return err;
1034 		/* overwrite */
1035 		chip->master_sw_ctl = snd_ctl_new1(&snd_pmac_awacs_amp_hp_sw,
1036 							chip);
1037 		err = snd_ctl_add(chip->card, chip->master_sw_ctl);
1038 		if (err < 0)
1039 			return err;
1040 		chip->speaker_sw_ctl = snd_ctl_new1(&snd_pmac_awacs_amp_spk_sw,
1041 							chip);
1042 		err = snd_ctl_add(chip->card, chip->speaker_sw_ctl);
1043 		if (err < 0)
1044 			return err;
1045 	} else
1046 #endif /* PMAC_AMP_AVAIL */
1047 	{
1048 		/* route A = headphone, route C = speaker */
1049 		err = snd_ctl_add(chip->card,
1050 		    (speaker_vol = snd_ctl_new1(snd_pmac_awacs_speaker_vol,
1051 						chip)));
1052 		if (err < 0)
1053 			return err;
1054 		chip->speaker_sw_ctl = snd_ctl_new1(imac1
1055 				? &snd_pmac_awacs_speaker_sw_imac1
1056 				: imac2
1057 				? &snd_pmac_awacs_speaker_sw_imac2
1058 				: &snd_pmac_awacs_speaker_sw, chip);
1059 		err = snd_ctl_add(chip->card, chip->speaker_sw_ctl);
1060 		if (err < 0)
1061 			return err;
1062 	}
1063 
1064 	if (pm5500 || imac || lombard) {
1065 		vmaster_sw = snd_ctl_make_virtual_master(
1066 			"Master Playback Switch", (unsigned int *) NULL);
1067 		err = snd_ctl_add_follower_uncached(vmaster_sw,
1068 						    chip->master_sw_ctl);
1069 		if (err < 0)
1070 			return err;
1071 		err = snd_ctl_add_follower_uncached(vmaster_sw,
1072 						    chip->speaker_sw_ctl);
1073 		if (err < 0)
1074 			return err;
1075 		err = snd_ctl_add(chip->card, vmaster_sw);
1076 		if (err < 0)
1077 			return err;
1078 		vmaster_vol = snd_ctl_make_virtual_master(
1079 			"Master Playback Volume", (unsigned int *) NULL);
1080 		err = snd_ctl_add_follower(vmaster_vol, master_vol);
1081 		if (err < 0)
1082 			return err;
1083 		err = snd_ctl_add_follower(vmaster_vol, speaker_vol);
1084 		if (err < 0)
1085 			return err;
1086 		err = snd_ctl_add(chip->card, vmaster_vol);
1087 		if (err < 0)
1088 			return err;
1089 	}
1090 
1091 	if (beige || g4agp)
1092 		err = build_mixers(chip,
1093 				ARRAY_SIZE(snd_pmac_screamer_mic_boost_beige),
1094 				snd_pmac_screamer_mic_boost_beige);
1095 	else if (imac)
1096 		err = build_mixers(chip,
1097 				ARRAY_SIZE(snd_pmac_screamer_mic_boost_imac),
1098 				snd_pmac_screamer_mic_boost_imac);
1099 	else if (chip->model == PMAC_SCREAMER)
1100 		err = build_mixers(chip,
1101 				ARRAY_SIZE(snd_pmac_screamer_mic_boost),
1102 				snd_pmac_screamer_mic_boost);
1103 	else if (pm7500)
1104 		err = build_mixers(chip,
1105 				ARRAY_SIZE(snd_pmac_awacs_mic_boost_pmac7500),
1106 				snd_pmac_awacs_mic_boost_pmac7500);
1107 	else
1108 		err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_mic_boost),
1109 				snd_pmac_awacs_mic_boost);
1110 	if (err < 0)
1111 		return err;
1112 
1113 	/*
1114 	 * set lowlevel callbacks
1115 	 */
1116 	chip->set_format = snd_pmac_awacs_set_format;
1117 #ifdef CONFIG_PM
1118 	chip->suspend = snd_pmac_awacs_suspend;
1119 	chip->resume = snd_pmac_awacs_resume;
1120 #endif
1121 #ifdef PMAC_SUPPORT_AUTOMUTE
1122 	err = snd_pmac_add_automute(chip);
1123 	if (err < 0)
1124 		return err;
1125 	chip->detect_headphone = snd_pmac_awacs_detect_headphone;
1126 	chip->update_automute = snd_pmac_awacs_update_automute;
1127 	snd_pmac_awacs_update_automute(chip, 0); /* update the status only */
1128 #endif
1129 	if (chip->model == PMAC_SCREAMER) {
1130 		snd_pmac_awacs_write_noreg(chip, 6, chip->awacs_reg[6]);
1131 		snd_pmac_awacs_write_noreg(chip, 0, chip->awacs_reg[0]);
1132 	}
1133 
1134 	return 0;
1135 }
1136