xref: /openbmc/linux/sound/ppc/awacs.c (revision b593bce5)
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/slab.h>
15 #include <sound/core.h>
16 #include "pmac.h"
17 
18 
19 #ifdef CONFIG_ADB_CUDA
20 #define PMAC_AMP_AVAIL
21 #endif
22 
23 #ifdef PMAC_AMP_AVAIL
24 struct awacs_amp {
25 	unsigned char amp_master;
26 	unsigned char amp_vol[2][2];
27 	unsigned char amp_tone[2];
28 };
29 
30 #define CHECK_CUDA_AMP() (sys_ctrler == SYS_CTRLER_CUDA)
31 
32 #endif /* PMAC_AMP_AVAIL */
33 
34 
35 static void snd_pmac_screamer_wait(struct snd_pmac *chip)
36 {
37 	long timeout = 2000;
38 	while (!(in_le32(&chip->awacs->codec_stat) & MASK_VALID)) {
39 		mdelay(1);
40 		if (! --timeout) {
41 			snd_printd("snd_pmac_screamer_wait timeout\n");
42 			break;
43 		}
44 	}
45 }
46 
47 /*
48  * write AWACS register
49  */
50 static void
51 snd_pmac_awacs_write(struct snd_pmac *chip, int val)
52 {
53 	long timeout = 5000000;
54 
55 	if (chip->model == PMAC_SCREAMER)
56 		snd_pmac_screamer_wait(chip);
57 	out_le32(&chip->awacs->codec_ctrl, val | (chip->subframe << 22));
58 	while (in_le32(&chip->awacs->codec_ctrl) & MASK_NEWECMD) {
59 		if (! --timeout) {
60 			snd_printd("snd_pmac_awacs_write timeout\n");
61 			break;
62 		}
63 	}
64 }
65 
66 static void
67 snd_pmac_awacs_write_reg(struct snd_pmac *chip, int reg, int val)
68 {
69 	snd_pmac_awacs_write(chip, val | (reg << 12));
70 	chip->awacs_reg[reg] = val;
71 }
72 
73 static void
74 snd_pmac_awacs_write_noreg(struct snd_pmac *chip, int reg, int val)
75 {
76 	snd_pmac_awacs_write(chip, val | (reg << 12));
77 }
78 
79 #ifdef CONFIG_PM
80 /* Recalibrate chip */
81 static void screamer_recalibrate(struct snd_pmac *chip)
82 {
83 	if (chip->model != PMAC_SCREAMER)
84 		return;
85 
86 	/* Sorry for the horrible delays... I hope to get that improved
87 	 * by making the whole PM process asynchronous in a future version
88 	 */
89 	snd_pmac_awacs_write_noreg(chip, 1, chip->awacs_reg[1]);
90 	if (chip->manufacturer == 0x1)
91 		/* delay for broken crystal part */
92 		msleep(750);
93 	snd_pmac_awacs_write_noreg(chip, 1,
94 				   chip->awacs_reg[1] | MASK_RECALIBRATE |
95 				   MASK_CMUTE | MASK_AMUTE);
96 	snd_pmac_awacs_write_noreg(chip, 1, chip->awacs_reg[1]);
97 	snd_pmac_awacs_write_noreg(chip, 6, chip->awacs_reg[6]);
98 }
99 
100 #else
101 #define screamer_recalibrate(chip) /* NOP */
102 #endif
103 
104 
105 /*
106  * additional callback to set the pcm format
107  */
108 static void snd_pmac_awacs_set_format(struct snd_pmac *chip)
109 {
110 	chip->awacs_reg[1] &= ~MASK_SAMPLERATE;
111 	chip->awacs_reg[1] |= chip->rate_index << 3;
112 	snd_pmac_awacs_write_reg(chip, 1, chip->awacs_reg[1]);
113 }
114 
115 
116 /*
117  * AWACS volume callbacks
118  */
119 /*
120  * volumes: 0-15 stereo
121  */
122 static int snd_pmac_awacs_info_volume(struct snd_kcontrol *kcontrol,
123 				      struct snd_ctl_elem_info *uinfo)
124 {
125 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
126 	uinfo->count = 2;
127 	uinfo->value.integer.min = 0;
128 	uinfo->value.integer.max = 15;
129 	return 0;
130 }
131 
132 static int snd_pmac_awacs_get_volume(struct snd_kcontrol *kcontrol,
133 				     struct snd_ctl_elem_value *ucontrol)
134 {
135 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
136 	int reg = kcontrol->private_value & 0xff;
137 	int lshift = (kcontrol->private_value >> 8) & 0xff;
138 	int inverted = (kcontrol->private_value >> 16) & 1;
139 	unsigned long flags;
140 	int vol[2];
141 
142 	spin_lock_irqsave(&chip->reg_lock, flags);
143 	vol[0] = (chip->awacs_reg[reg] >> lshift) & 0xf;
144 	vol[1] = chip->awacs_reg[reg] & 0xf;
145 	spin_unlock_irqrestore(&chip->reg_lock, flags);
146 	if (inverted) {
147 		vol[0] = 0x0f - vol[0];
148 		vol[1] = 0x0f - vol[1];
149 	}
150 	ucontrol->value.integer.value[0] = vol[0];
151 	ucontrol->value.integer.value[1] = vol[1];
152 	return 0;
153 }
154 
155 static int snd_pmac_awacs_put_volume(struct snd_kcontrol *kcontrol,
156 				     struct snd_ctl_elem_value *ucontrol)
157 {
158 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
159 	int reg = kcontrol->private_value & 0xff;
160 	int lshift = (kcontrol->private_value >> 8) & 0xff;
161 	int inverted = (kcontrol->private_value >> 16) & 1;
162 	int val, oldval;
163 	unsigned long flags;
164 	unsigned int vol[2];
165 
166 	vol[0] = ucontrol->value.integer.value[0];
167 	vol[1] = ucontrol->value.integer.value[1];
168 	if (vol[0] > 0x0f || vol[1] > 0x0f)
169 		return -EINVAL;
170 	if (inverted) {
171 		vol[0] = 0x0f - vol[0];
172 		vol[1] = 0x0f - vol[1];
173 	}
174 	vol[0] &= 0x0f;
175 	vol[1] &= 0x0f;
176 	spin_lock_irqsave(&chip->reg_lock, flags);
177 	oldval = chip->awacs_reg[reg];
178 	val = oldval & ~(0xf | (0xf << lshift));
179 	val |= vol[0] << lshift;
180 	val |= vol[1];
181 	if (oldval != val)
182 		snd_pmac_awacs_write_reg(chip, reg, val);
183 	spin_unlock_irqrestore(&chip->reg_lock, flags);
184 	return oldval != reg;
185 }
186 
187 
188 #define AWACS_VOLUME(xname, xreg, xshift, xinverted) \
189 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = 0, \
190   .info = snd_pmac_awacs_info_volume, \
191   .get = snd_pmac_awacs_get_volume, \
192   .put = snd_pmac_awacs_put_volume, \
193   .private_value = (xreg) | ((xshift) << 8) | ((xinverted) << 16) }
194 
195 /*
196  * mute master/ogain for AWACS: mono
197  */
198 static int snd_pmac_awacs_get_switch(struct snd_kcontrol *kcontrol,
199 				     struct snd_ctl_elem_value *ucontrol)
200 {
201 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
202 	int reg = kcontrol->private_value & 0xff;
203 	int shift = (kcontrol->private_value >> 8) & 0xff;
204 	int invert = (kcontrol->private_value >> 16) & 1;
205 	int val;
206 	unsigned long flags;
207 
208 	spin_lock_irqsave(&chip->reg_lock, flags);
209 	val = (chip->awacs_reg[reg] >> shift) & 1;
210 	spin_unlock_irqrestore(&chip->reg_lock, flags);
211 	if (invert)
212 		val = 1 - val;
213 	ucontrol->value.integer.value[0] = val;
214 	return 0;
215 }
216 
217 static int snd_pmac_awacs_put_switch(struct snd_kcontrol *kcontrol,
218 				     struct snd_ctl_elem_value *ucontrol)
219 {
220 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
221 	int reg = kcontrol->private_value & 0xff;
222 	int shift = (kcontrol->private_value >> 8) & 0xff;
223 	int invert = (kcontrol->private_value >> 16) & 1;
224 	int mask = 1 << shift;
225 	int val, changed;
226 	unsigned long flags;
227 
228 	spin_lock_irqsave(&chip->reg_lock, flags);
229 	val = chip->awacs_reg[reg] & ~mask;
230 	if (ucontrol->value.integer.value[0] != invert)
231 		val |= mask;
232 	changed = chip->awacs_reg[reg] != val;
233 	if (changed)
234 		snd_pmac_awacs_write_reg(chip, reg, val);
235 	spin_unlock_irqrestore(&chip->reg_lock, flags);
236 	return changed;
237 }
238 
239 #define AWACS_SWITCH(xname, xreg, xshift, xinvert) \
240 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = 0, \
241   .info = snd_pmac_boolean_mono_info, \
242   .get = snd_pmac_awacs_get_switch, \
243   .put = snd_pmac_awacs_put_switch, \
244   .private_value = (xreg) | ((xshift) << 8) | ((xinvert) << 16) }
245 
246 
247 #ifdef PMAC_AMP_AVAIL
248 /*
249  * controls for perch/whisper extension cards, e.g. G3 desktop
250  *
251  * TDA7433 connected via i2c address 0x45 (= 0x8a),
252  * accessed through cuda
253  */
254 static void awacs_set_cuda(int reg, int val)
255 {
256 	struct adb_request req;
257 	cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_GET_SET_IIC, 0x8a,
258 			reg, val);
259 	while (! req.complete)
260 		cuda_poll();
261 }
262 
263 /*
264  * level = 0 - 14, 7 = 0 dB
265  */
266 static void awacs_amp_set_tone(struct awacs_amp *amp, int bass, int treble)
267 {
268 	amp->amp_tone[0] = bass;
269 	amp->amp_tone[1] = treble;
270 	if (bass > 7)
271 		bass = (14 - bass) + 8;
272 	if (treble > 7)
273 		treble = (14 - treble) + 8;
274 	awacs_set_cuda(2, (bass << 4) | treble);
275 }
276 
277 /*
278  * vol = 0 - 31 (attenuation), 32 = mute bit, stereo
279  */
280 static int awacs_amp_set_vol(struct awacs_amp *amp, int index,
281 			     int lvol, int rvol, int do_check)
282 {
283 	if (do_check && amp->amp_vol[index][0] == lvol &&
284 			amp->amp_vol[index][1] == rvol)
285 		return 0;
286 	awacs_set_cuda(3 + index, lvol);
287 	awacs_set_cuda(5 + index, rvol);
288 	amp->amp_vol[index][0] = lvol;
289 	amp->amp_vol[index][1] = rvol;
290 	return 1;
291 }
292 
293 /*
294  * 0 = -79 dB, 79 = 0 dB, 99 = +20 dB
295  */
296 static void awacs_amp_set_master(struct awacs_amp *amp, int vol)
297 {
298 	amp->amp_master = vol;
299 	if (vol <= 79)
300 		vol = 32 + (79 - vol);
301 	else
302 		vol = 32 - (vol - 79);
303 	awacs_set_cuda(1, vol);
304 }
305 
306 static void awacs_amp_free(struct snd_pmac *chip)
307 {
308 	struct awacs_amp *amp = chip->mixer_data;
309 	if (!amp)
310 		return;
311 	kfree(amp);
312 	chip->mixer_data = NULL;
313 	chip->mixer_free = NULL;
314 }
315 
316 
317 /*
318  * mixer controls
319  */
320 static int snd_pmac_awacs_info_volume_amp(struct snd_kcontrol *kcontrol,
321 					  struct snd_ctl_elem_info *uinfo)
322 {
323 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
324 	uinfo->count = 2;
325 	uinfo->value.integer.min = 0;
326 	uinfo->value.integer.max = 31;
327 	return 0;
328 }
329 
330 static int snd_pmac_awacs_get_volume_amp(struct snd_kcontrol *kcontrol,
331 					 struct snd_ctl_elem_value *ucontrol)
332 {
333 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
334 	int index = kcontrol->private_value;
335 	struct awacs_amp *amp = chip->mixer_data;
336 
337 	ucontrol->value.integer.value[0] = 31 - (amp->amp_vol[index][0] & 31);
338 	ucontrol->value.integer.value[1] = 31 - (amp->amp_vol[index][1] & 31);
339 	return 0;
340 }
341 
342 static int snd_pmac_awacs_put_volume_amp(struct snd_kcontrol *kcontrol,
343 					 struct snd_ctl_elem_value *ucontrol)
344 {
345 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
346 	int index = kcontrol->private_value;
347 	int vol[2];
348 	struct awacs_amp *amp = chip->mixer_data;
349 
350 	vol[0] = (31 - (ucontrol->value.integer.value[0] & 31))
351 		| (amp->amp_vol[index][0] & 32);
352 	vol[1] = (31 - (ucontrol->value.integer.value[1] & 31))
353 		| (amp->amp_vol[index][1] & 32);
354 	return awacs_amp_set_vol(amp, index, vol[0], vol[1], 1);
355 }
356 
357 static int snd_pmac_awacs_get_switch_amp(struct snd_kcontrol *kcontrol,
358 					 struct snd_ctl_elem_value *ucontrol)
359 {
360 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
361 	int index = kcontrol->private_value;
362 	struct awacs_amp *amp = chip->mixer_data;
363 
364 	ucontrol->value.integer.value[0] = (amp->amp_vol[index][0] & 32)
365 					? 0 : 1;
366 	ucontrol->value.integer.value[1] = (amp->amp_vol[index][1] & 32)
367 					? 0 : 1;
368 	return 0;
369 }
370 
371 static int snd_pmac_awacs_put_switch_amp(struct snd_kcontrol *kcontrol,
372 					 struct snd_ctl_elem_value *ucontrol)
373 {
374 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
375 	int index = kcontrol->private_value;
376 	int vol[2];
377 	struct awacs_amp *amp = chip->mixer_data;
378 
379 	vol[0] = (ucontrol->value.integer.value[0] ? 0 : 32)
380 		| (amp->amp_vol[index][0] & 31);
381 	vol[1] = (ucontrol->value.integer.value[1] ? 0 : 32)
382 		| (amp->amp_vol[index][1] & 31);
383 	return awacs_amp_set_vol(amp, index, vol[0], vol[1], 1);
384 }
385 
386 static int snd_pmac_awacs_info_tone_amp(struct snd_kcontrol *kcontrol,
387 					struct snd_ctl_elem_info *uinfo)
388 {
389 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
390 	uinfo->count = 1;
391 	uinfo->value.integer.min = 0;
392 	uinfo->value.integer.max = 14;
393 	return 0;
394 }
395 
396 static int snd_pmac_awacs_get_tone_amp(struct snd_kcontrol *kcontrol,
397 				       struct snd_ctl_elem_value *ucontrol)
398 {
399 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
400 	int index = kcontrol->private_value;
401 	struct awacs_amp *amp = chip->mixer_data;
402 
403 	ucontrol->value.integer.value[0] = amp->amp_tone[index];
404 	return 0;
405 }
406 
407 static int snd_pmac_awacs_put_tone_amp(struct snd_kcontrol *kcontrol,
408 				       struct snd_ctl_elem_value *ucontrol)
409 {
410 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
411 	int index = kcontrol->private_value;
412 	struct awacs_amp *amp = chip->mixer_data;
413 	unsigned int val;
414 
415 	val = ucontrol->value.integer.value[0];
416 	if (val > 14)
417 		return -EINVAL;
418 	if (val != amp->amp_tone[index]) {
419 		amp->amp_tone[index] = val;
420 		awacs_amp_set_tone(amp, amp->amp_tone[0], amp->amp_tone[1]);
421 		return 1;
422 	}
423 	return 0;
424 }
425 
426 static int snd_pmac_awacs_info_master_amp(struct snd_kcontrol *kcontrol,
427 					  struct snd_ctl_elem_info *uinfo)
428 {
429 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
430 	uinfo->count = 1;
431 	uinfo->value.integer.min = 0;
432 	uinfo->value.integer.max = 99;
433 	return 0;
434 }
435 
436 static int snd_pmac_awacs_get_master_amp(struct snd_kcontrol *kcontrol,
437 					 struct snd_ctl_elem_value *ucontrol)
438 {
439 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
440 	struct awacs_amp *amp = chip->mixer_data;
441 
442 	ucontrol->value.integer.value[0] = amp->amp_master;
443 	return 0;
444 }
445 
446 static int snd_pmac_awacs_put_master_amp(struct snd_kcontrol *kcontrol,
447 					 struct snd_ctl_elem_value *ucontrol)
448 {
449 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
450 	struct awacs_amp *amp = chip->mixer_data;
451 	unsigned int val;
452 
453 	val = ucontrol->value.integer.value[0];
454 	if (val > 99)
455 		return -EINVAL;
456 	if (val != amp->amp_master) {
457 		amp->amp_master = val;
458 		awacs_amp_set_master(amp, amp->amp_master);
459 		return 1;
460 	}
461 	return 0;
462 }
463 
464 #define AMP_CH_SPK	0
465 #define AMP_CH_HD	1
466 
467 static struct snd_kcontrol_new snd_pmac_awacs_amp_vol[] = {
468 	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
469 	  .name = "Speaker Playback Volume",
470 	  .info = snd_pmac_awacs_info_volume_amp,
471 	  .get = snd_pmac_awacs_get_volume_amp,
472 	  .put = snd_pmac_awacs_put_volume_amp,
473 	  .private_value = AMP_CH_SPK,
474 	},
475 	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
476 	  .name = "Headphone Playback Volume",
477 	  .info = snd_pmac_awacs_info_volume_amp,
478 	  .get = snd_pmac_awacs_get_volume_amp,
479 	  .put = snd_pmac_awacs_put_volume_amp,
480 	  .private_value = AMP_CH_HD,
481 	},
482 	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
483 	  .name = "Tone Control - Bass",
484 	  .info = snd_pmac_awacs_info_tone_amp,
485 	  .get = snd_pmac_awacs_get_tone_amp,
486 	  .put = snd_pmac_awacs_put_tone_amp,
487 	  .private_value = 0,
488 	},
489 	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
490 	  .name = "Tone Control - Treble",
491 	  .info = snd_pmac_awacs_info_tone_amp,
492 	  .get = snd_pmac_awacs_get_tone_amp,
493 	  .put = snd_pmac_awacs_put_tone_amp,
494 	  .private_value = 1,
495 	},
496 	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
497 	  .name = "Amp Master Playback Volume",
498 	  .info = snd_pmac_awacs_info_master_amp,
499 	  .get = snd_pmac_awacs_get_master_amp,
500 	  .put = snd_pmac_awacs_put_master_amp,
501 	},
502 };
503 
504 static const struct snd_kcontrol_new snd_pmac_awacs_amp_hp_sw = {
505 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
506 	.name = "Headphone Playback Switch",
507 	.info = snd_pmac_boolean_stereo_info,
508 	.get = snd_pmac_awacs_get_switch_amp,
509 	.put = snd_pmac_awacs_put_switch_amp,
510 	.private_value = AMP_CH_HD,
511 };
512 
513 static const struct snd_kcontrol_new snd_pmac_awacs_amp_spk_sw = {
514 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
515 	.name = "Speaker Playback Switch",
516 	.info = snd_pmac_boolean_stereo_info,
517 	.get = snd_pmac_awacs_get_switch_amp,
518 	.put = snd_pmac_awacs_put_switch_amp,
519 	.private_value = AMP_CH_SPK,
520 };
521 
522 #endif /* PMAC_AMP_AVAIL */
523 
524 
525 /*
526  * mic boost for screamer
527  */
528 static int snd_pmac_screamer_mic_boost_info(struct snd_kcontrol *kcontrol,
529 					    struct snd_ctl_elem_info *uinfo)
530 {
531 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
532 	uinfo->count = 1;
533 	uinfo->value.integer.min = 0;
534 	uinfo->value.integer.max = 3;
535 	return 0;
536 }
537 
538 static int snd_pmac_screamer_mic_boost_get(struct snd_kcontrol *kcontrol,
539 					   struct snd_ctl_elem_value *ucontrol)
540 {
541 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
542 	int val = 0;
543 	unsigned long flags;
544 
545 	spin_lock_irqsave(&chip->reg_lock, flags);
546 	if (chip->awacs_reg[6] & MASK_MIC_BOOST)
547 		val |= 2;
548 	if (chip->awacs_reg[0] & MASK_GAINLINE)
549 		val |= 1;
550 	spin_unlock_irqrestore(&chip->reg_lock, flags);
551 	ucontrol->value.integer.value[0] = val;
552 	return 0;
553 }
554 
555 static int snd_pmac_screamer_mic_boost_put(struct snd_kcontrol *kcontrol,
556 					   struct snd_ctl_elem_value *ucontrol)
557 {
558 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
559 	int changed = 0;
560 	int val0, val6;
561 	unsigned long flags;
562 
563 	spin_lock_irqsave(&chip->reg_lock, flags);
564 	val0 = chip->awacs_reg[0] & ~MASK_GAINLINE;
565 	val6 = chip->awacs_reg[6] & ~MASK_MIC_BOOST;
566 	if (ucontrol->value.integer.value[0] & 1)
567 		val0 |= MASK_GAINLINE;
568 	if (ucontrol->value.integer.value[0] & 2)
569 		val6 |= MASK_MIC_BOOST;
570 	if (val0 != chip->awacs_reg[0]) {
571 		snd_pmac_awacs_write_reg(chip, 0, val0);
572 		changed = 1;
573 	}
574 	if (val6 != chip->awacs_reg[6]) {
575 		snd_pmac_awacs_write_reg(chip, 6, val6);
576 		changed = 1;
577 	}
578 	spin_unlock_irqrestore(&chip->reg_lock, flags);
579 	return changed;
580 }
581 
582 /*
583  * lists of mixer elements
584  */
585 static struct snd_kcontrol_new snd_pmac_awacs_mixers[] = {
586 	AWACS_SWITCH("Master Capture Switch", 1, SHIFT_LOOPTHRU, 0),
587 	AWACS_VOLUME("Master Capture Volume", 0, 4, 0),
588 /*	AWACS_SWITCH("Unknown Playback Switch", 6, SHIFT_PAROUT0, 0), */
589 };
590 
591 static struct snd_kcontrol_new snd_pmac_screamer_mixers_beige[] = {
592 	AWACS_VOLUME("Master Playback Volume", 2, 6, 1),
593 	AWACS_VOLUME("Play-through Playback Volume", 5, 6, 1),
594 	AWACS_SWITCH("Line Capture Switch", 0, SHIFT_MUX_MIC, 0),
595 	AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_LINE, 0),
596 };
597 
598 static struct snd_kcontrol_new snd_pmac_screamer_mixers_lo[] = {
599 	AWACS_VOLUME("Line out Playback Volume", 2, 6, 1),
600 };
601 
602 static struct snd_kcontrol_new snd_pmac_screamer_mixers_imac[] = {
603 	AWACS_VOLUME("Play-through Playback Volume", 5, 6, 1),
604 	AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_CD, 0),
605 };
606 
607 static struct snd_kcontrol_new snd_pmac_screamer_mixers_g4agp[] = {
608 	AWACS_VOLUME("Line out Playback Volume", 2, 6, 1),
609 	AWACS_VOLUME("Master Playback Volume", 5, 6, 1),
610 	AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_CD, 0),
611 	AWACS_SWITCH("Line Capture Switch", 0, SHIFT_MUX_MIC, 0),
612 };
613 
614 static struct snd_kcontrol_new snd_pmac_awacs_mixers_pmac7500[] = {
615 	AWACS_VOLUME("Line out Playback Volume", 2, 6, 1),
616 	AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_CD, 0),
617 	AWACS_SWITCH("Line Capture Switch", 0, SHIFT_MUX_MIC, 0),
618 };
619 
620 static struct snd_kcontrol_new snd_pmac_awacs_mixers_pmac5500[] = {
621 	AWACS_VOLUME("Headphone Playback Volume", 2, 6, 1),
622 };
623 
624 static struct snd_kcontrol_new snd_pmac_awacs_mixers_pmac[] = {
625 	AWACS_VOLUME("Master Playback Volume", 2, 6, 1),
626 	AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_CD, 0),
627 };
628 
629 /* FIXME: is this correct order?
630  * screamer (powerbook G3 pismo) seems to have different bits...
631  */
632 static struct snd_kcontrol_new snd_pmac_awacs_mixers2[] = {
633 	AWACS_SWITCH("Line Capture Switch", 0, SHIFT_MUX_LINE, 0),
634 	AWACS_SWITCH("Mic Capture Switch", 0, SHIFT_MUX_MIC, 0),
635 };
636 
637 static struct snd_kcontrol_new snd_pmac_screamer_mixers2[] = {
638 	AWACS_SWITCH("Line Capture Switch", 0, SHIFT_MUX_MIC, 0),
639 	AWACS_SWITCH("Mic Capture Switch", 0, SHIFT_MUX_LINE, 0),
640 };
641 
642 static struct snd_kcontrol_new snd_pmac_awacs_mixers2_pmac5500[] = {
643 	AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_CD, 0),
644 };
645 
646 static struct snd_kcontrol_new snd_pmac_awacs_master_sw =
647 AWACS_SWITCH("Master Playback Switch", 1, SHIFT_HDMUTE, 1);
648 
649 static struct snd_kcontrol_new snd_pmac_awacs_master_sw_imac =
650 AWACS_SWITCH("Line out Playback Switch", 1, SHIFT_HDMUTE, 1);
651 
652 static struct snd_kcontrol_new snd_pmac_awacs_master_sw_pmac5500 =
653 AWACS_SWITCH("Headphone Playback Switch", 1, SHIFT_HDMUTE, 1);
654 
655 static struct snd_kcontrol_new snd_pmac_awacs_mic_boost[] = {
656 	AWACS_SWITCH("Mic Boost Capture Switch", 0, SHIFT_GAINLINE, 0),
657 };
658 
659 static struct snd_kcontrol_new snd_pmac_screamer_mic_boost[] = {
660 	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
661 	  .name = "Mic Boost Capture Volume",
662 	  .info = snd_pmac_screamer_mic_boost_info,
663 	  .get = snd_pmac_screamer_mic_boost_get,
664 	  .put = snd_pmac_screamer_mic_boost_put,
665 	},
666 };
667 
668 static struct snd_kcontrol_new snd_pmac_awacs_mic_boost_pmac7500[] =
669 {
670 	AWACS_SWITCH("Line Boost Capture Switch", 0, SHIFT_GAINLINE, 0),
671 };
672 
673 static struct snd_kcontrol_new snd_pmac_screamer_mic_boost_beige[] =
674 {
675 	AWACS_SWITCH("Line Boost Capture Switch", 0, SHIFT_GAINLINE, 0),
676 	AWACS_SWITCH("CD Boost Capture Switch", 6, SHIFT_MIC_BOOST, 0),
677 };
678 
679 static struct snd_kcontrol_new snd_pmac_screamer_mic_boost_imac[] =
680 {
681 	AWACS_SWITCH("Line Boost Capture Switch", 0, SHIFT_GAINLINE, 0),
682 	AWACS_SWITCH("Mic Boost Capture Switch", 6, SHIFT_MIC_BOOST, 0),
683 };
684 
685 static struct snd_kcontrol_new snd_pmac_awacs_speaker_vol[] = {
686 	AWACS_VOLUME("Speaker Playback Volume", 4, 6, 1),
687 };
688 
689 static struct snd_kcontrol_new snd_pmac_awacs_speaker_sw =
690 AWACS_SWITCH("Speaker Playback Switch", 1, SHIFT_SPKMUTE, 1);
691 
692 static struct snd_kcontrol_new snd_pmac_awacs_speaker_sw_imac1 =
693 AWACS_SWITCH("Speaker Playback Switch", 1, SHIFT_PAROUT1, 1);
694 
695 static struct snd_kcontrol_new snd_pmac_awacs_speaker_sw_imac2 =
696 AWACS_SWITCH("Speaker Playback Switch", 1, SHIFT_PAROUT1, 0);
697 
698 
699 /*
700  * add new mixer elements to the card
701  */
702 static int build_mixers(struct snd_pmac *chip, int nums,
703 			struct snd_kcontrol_new *mixers)
704 {
705 	int i, err;
706 
707 	for (i = 0; i < nums; i++) {
708 		err = snd_ctl_add(chip->card, snd_ctl_new1(&mixers[i], chip));
709 		if (err < 0)
710 			return err;
711 	}
712 	return 0;
713 }
714 
715 
716 /*
717  * restore all registers
718  */
719 static void awacs_restore_all_regs(struct snd_pmac *chip)
720 {
721 	snd_pmac_awacs_write_noreg(chip, 0, chip->awacs_reg[0]);
722 	snd_pmac_awacs_write_noreg(chip, 1, chip->awacs_reg[1]);
723 	snd_pmac_awacs_write_noreg(chip, 2, chip->awacs_reg[2]);
724 	snd_pmac_awacs_write_noreg(chip, 4, chip->awacs_reg[4]);
725 	if (chip->model == PMAC_SCREAMER) {
726 		snd_pmac_awacs_write_noreg(chip, 5, chip->awacs_reg[5]);
727 		snd_pmac_awacs_write_noreg(chip, 6, chip->awacs_reg[6]);
728 		snd_pmac_awacs_write_noreg(chip, 7, chip->awacs_reg[7]);
729 	}
730 }
731 
732 #ifdef CONFIG_PM
733 static void snd_pmac_awacs_suspend(struct snd_pmac *chip)
734 {
735 	snd_pmac_awacs_write_noreg(chip, 1, (chip->awacs_reg[1]
736 					     | MASK_AMUTE | MASK_CMUTE));
737 }
738 
739 static void snd_pmac_awacs_resume(struct snd_pmac *chip)
740 {
741 	if (of_machine_is_compatible("PowerBook3,1")
742 	    || of_machine_is_compatible("PowerBook3,2")) {
743 		msleep(100);
744 		snd_pmac_awacs_write_reg(chip, 1,
745 			chip->awacs_reg[1] & ~MASK_PAROUT);
746 		msleep(300);
747 	}
748 
749 	awacs_restore_all_regs(chip);
750 	if (chip->model == PMAC_SCREAMER) {
751 		/* reset power bits in reg 6 */
752 		mdelay(5);
753 		snd_pmac_awacs_write_noreg(chip, 6, chip->awacs_reg[6]);
754 	}
755 	screamer_recalibrate(chip);
756 #ifdef PMAC_AMP_AVAIL
757 	if (chip->mixer_data) {
758 		struct awacs_amp *amp = chip->mixer_data;
759 		awacs_amp_set_vol(amp, 0,
760 				  amp->amp_vol[0][0], amp->amp_vol[0][1], 0);
761 		awacs_amp_set_vol(amp, 1,
762 				  amp->amp_vol[1][0], amp->amp_vol[1][1], 0);
763 		awacs_amp_set_tone(amp, amp->amp_tone[0], amp->amp_tone[1]);
764 		awacs_amp_set_master(amp, amp->amp_master);
765 	}
766 #endif
767 }
768 #endif /* CONFIG_PM */
769 
770 #define IS_PM7500 (of_machine_is_compatible("AAPL,7500") \
771 		|| of_machine_is_compatible("AAPL,8500") \
772 		|| of_machine_is_compatible("AAPL,9500"))
773 #define IS_PM5500 (of_machine_is_compatible("AAPL,e411"))
774 #define IS_BEIGE (of_machine_is_compatible("AAPL,Gossamer"))
775 #define IS_IMAC1 (of_machine_is_compatible("PowerMac2,1"))
776 #define IS_IMAC2 (of_machine_is_compatible("PowerMac2,2") \
777 		|| of_machine_is_compatible("PowerMac4,1"))
778 #define IS_G4AGP (of_machine_is_compatible("PowerMac3,1"))
779 #define IS_LOMBARD (of_machine_is_compatible("PowerBook1,1"))
780 
781 static int imac1, imac2;
782 
783 #ifdef PMAC_SUPPORT_AUTOMUTE
784 /*
785  * auto-mute stuffs
786  */
787 static int snd_pmac_awacs_detect_headphone(struct snd_pmac *chip)
788 {
789 	return (in_le32(&chip->awacs->codec_stat) & chip->hp_stat_mask) ? 1 : 0;
790 }
791 
792 #ifdef PMAC_AMP_AVAIL
793 static int toggle_amp_mute(struct awacs_amp *amp, int index, int mute)
794 {
795 	int vol[2];
796 	vol[0] = amp->amp_vol[index][0] & 31;
797 	vol[1] = amp->amp_vol[index][1] & 31;
798 	if (mute) {
799 		vol[0] |= 32;
800 		vol[1] |= 32;
801 	}
802 	return awacs_amp_set_vol(amp, index, vol[0], vol[1], 1);
803 }
804 #endif
805 
806 static void snd_pmac_awacs_update_automute(struct snd_pmac *chip, int do_notify)
807 {
808 	if (chip->auto_mute) {
809 #ifdef PMAC_AMP_AVAIL
810 		if (chip->mixer_data) {
811 			struct awacs_amp *amp = chip->mixer_data;
812 			int changed;
813 			if (snd_pmac_awacs_detect_headphone(chip)) {
814 				changed = toggle_amp_mute(amp, AMP_CH_HD, 0);
815 				changed |= toggle_amp_mute(amp, AMP_CH_SPK, 1);
816 			} else {
817 				changed = toggle_amp_mute(amp, AMP_CH_HD, 1);
818 				changed |= toggle_amp_mute(amp, AMP_CH_SPK, 0);
819 			}
820 			if (do_notify && ! changed)
821 				return;
822 		} else
823 #endif
824 		{
825 			int reg = chip->awacs_reg[1]
826 				| (MASK_HDMUTE | MASK_SPKMUTE);
827 			if (imac1) {
828 				reg &= ~MASK_SPKMUTE;
829 				reg |= MASK_PAROUT1;
830 			} else if (imac2) {
831 				reg &= ~MASK_SPKMUTE;
832 				reg &= ~MASK_PAROUT1;
833 			}
834 			if (snd_pmac_awacs_detect_headphone(chip))
835 				reg &= ~MASK_HDMUTE;
836 			else if (imac1)
837 				reg &= ~MASK_PAROUT1;
838 			else if (imac2)
839 				reg |= MASK_PAROUT1;
840 			else
841 				reg &= ~MASK_SPKMUTE;
842 			if (do_notify && reg == chip->awacs_reg[1])
843 				return;
844 			snd_pmac_awacs_write_reg(chip, 1, reg);
845 		}
846 		if (do_notify) {
847 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
848 				       &chip->master_sw_ctl->id);
849 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
850 				       &chip->speaker_sw_ctl->id);
851 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
852 				       &chip->hp_detect_ctl->id);
853 		}
854 	}
855 }
856 #endif /* PMAC_SUPPORT_AUTOMUTE */
857 
858 
859 /*
860  * initialize chip
861  */
862 int
863 snd_pmac_awacs_init(struct snd_pmac *chip)
864 {
865 	int pm7500 = IS_PM7500;
866 	int pm5500 = IS_PM5500;
867 	int beige = IS_BEIGE;
868 	int g4agp = IS_G4AGP;
869 	int lombard = IS_LOMBARD;
870 	int imac;
871 	int err, vol;
872 	struct snd_kcontrol *vmaster_sw, *vmaster_vol;
873 	struct snd_kcontrol *master_vol, *speaker_vol;
874 
875 	imac1 = IS_IMAC1;
876 	imac2 = IS_IMAC2;
877 	imac = imac1 || imac2;
878 	/* looks like MASK_GAINLINE triggers something, so we set here
879 	 * as start-up
880 	 */
881 	chip->awacs_reg[0] = MASK_MUX_CD | 0xff | MASK_GAINLINE;
882 	chip->awacs_reg[1] = MASK_CMUTE | MASK_AMUTE;
883 	/* FIXME: Only machines with external SRS module need MASK_PAROUT */
884 	if (chip->has_iic || chip->device_id == 0x5 ||
885 	    /* chip->_device_id == 0x8 || */
886 	    chip->device_id == 0xb)
887 		chip->awacs_reg[1] |= MASK_PAROUT;
888 	/* get default volume from nvram */
889 	// vol = (~nvram_read_byte(0x1308) & 7) << 1;
890 	// vol = ((pmac_xpram_read( 8 ) & 7 ) << 1 );
891 	vol = 0x0f; /* no, on alsa, muted as default */
892 	vol = vol + (vol << 6);
893 	chip->awacs_reg[2] = vol;
894 	chip->awacs_reg[4] = vol;
895 	if (chip->model == PMAC_SCREAMER) {
896 		/* FIXME: screamer has loopthru vol control */
897 		chip->awacs_reg[5] = vol;
898 		/* FIXME: maybe should be vol << 3 for PCMCIA speaker */
899 		chip->awacs_reg[6] = MASK_MIC_BOOST;
900 		chip->awacs_reg[7] = 0;
901 	}
902 
903 	awacs_restore_all_regs(chip);
904 	chip->manufacturer = (in_le32(&chip->awacs->codec_stat) >> 8) & 0xf;
905 	screamer_recalibrate(chip);
906 
907 	chip->revision = (in_le32(&chip->awacs->codec_stat) >> 12) & 0xf;
908 #ifdef PMAC_AMP_AVAIL
909 	if (chip->revision == 3 && chip->has_iic && CHECK_CUDA_AMP()) {
910 		struct awacs_amp *amp = kzalloc(sizeof(*amp), GFP_KERNEL);
911 		if (! amp)
912 			return -ENOMEM;
913 		chip->mixer_data = amp;
914 		chip->mixer_free = awacs_amp_free;
915 		/* mute and zero vol */
916 		awacs_amp_set_vol(amp, 0, 63, 63, 0);
917 		awacs_amp_set_vol(amp, 1, 63, 63, 0);
918 		awacs_amp_set_tone(amp, 7, 7); /* 0 dB */
919 		awacs_amp_set_master(amp, 79); /* 0 dB */
920 	}
921 #endif /* PMAC_AMP_AVAIL */
922 
923 	if (chip->hp_stat_mask == 0) {
924 		/* set headphone-jack detection bit */
925 		switch (chip->model) {
926 		case PMAC_AWACS:
927 			chip->hp_stat_mask = pm7500 || pm5500 ? MASK_HDPCONN
928 				: MASK_LOCONN;
929 			break;
930 		case PMAC_SCREAMER:
931 			switch (chip->device_id) {
932 			case 0x08:
933 			case 0x0B:
934 				chip->hp_stat_mask = imac
935 					? MASK_LOCONN_IMAC |
936 					MASK_HDPLCONN_IMAC |
937 					MASK_HDPRCONN_IMAC
938 					: MASK_HDPCONN;
939 				break;
940 			case 0x00:
941 			case 0x05:
942 				chip->hp_stat_mask = MASK_LOCONN;
943 				break;
944 			default:
945 				chip->hp_stat_mask = MASK_HDPCONN;
946 				break;
947 			}
948 			break;
949 		default:
950 			snd_BUG();
951 			break;
952 		}
953 	}
954 
955 	/*
956 	 * build mixers
957 	 */
958 	strcpy(chip->card->mixername, "PowerMac AWACS");
959 
960 	err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_mixers),
961 				snd_pmac_awacs_mixers);
962 	if (err < 0)
963 		return err;
964 	if (beige || g4agp)
965 		;
966 	else if (chip->model == PMAC_SCREAMER || pm5500)
967 		err = build_mixers(chip, ARRAY_SIZE(snd_pmac_screamer_mixers2),
968 				   snd_pmac_screamer_mixers2);
969 	else if (!pm7500)
970 		err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_mixers2),
971 				   snd_pmac_awacs_mixers2);
972 	if (err < 0)
973 		return err;
974 	if (pm5500) {
975 		err = build_mixers(chip,
976 				   ARRAY_SIZE(snd_pmac_awacs_mixers2_pmac5500),
977 				   snd_pmac_awacs_mixers2_pmac5500);
978 		if (err < 0)
979 			return err;
980 	}
981 	master_vol = NULL;
982 	if (pm7500)
983 		err = build_mixers(chip,
984 				   ARRAY_SIZE(snd_pmac_awacs_mixers_pmac7500),
985 				   snd_pmac_awacs_mixers_pmac7500);
986 	else if (pm5500)
987 		err = snd_ctl_add(chip->card,
988 		    (master_vol = snd_ctl_new1(snd_pmac_awacs_mixers_pmac5500,
989 						chip)));
990 	else if (beige)
991 		err = build_mixers(chip,
992 				   ARRAY_SIZE(snd_pmac_screamer_mixers_beige),
993 				   snd_pmac_screamer_mixers_beige);
994 	else if (imac || lombard) {
995 		err = snd_ctl_add(chip->card,
996 		    (master_vol = snd_ctl_new1(snd_pmac_screamer_mixers_lo,
997 						chip)));
998 		if (err < 0)
999 			return err;
1000 		err = build_mixers(chip,
1001 				   ARRAY_SIZE(snd_pmac_screamer_mixers_imac),
1002 				   snd_pmac_screamer_mixers_imac);
1003 	} else if (g4agp)
1004 		err = build_mixers(chip,
1005 				   ARRAY_SIZE(snd_pmac_screamer_mixers_g4agp),
1006 				   snd_pmac_screamer_mixers_g4agp);
1007 	else
1008 		err = build_mixers(chip,
1009 				   ARRAY_SIZE(snd_pmac_awacs_mixers_pmac),
1010 				   snd_pmac_awacs_mixers_pmac);
1011 	if (err < 0)
1012 		return err;
1013 	chip->master_sw_ctl = snd_ctl_new1((pm7500 || imac || g4agp || lombard)
1014 			? &snd_pmac_awacs_master_sw_imac
1015 			: pm5500
1016 			? &snd_pmac_awacs_master_sw_pmac5500
1017 			: &snd_pmac_awacs_master_sw, chip);
1018 	err = snd_ctl_add(chip->card, chip->master_sw_ctl);
1019 	if (err < 0)
1020 		return err;
1021 #ifdef PMAC_AMP_AVAIL
1022 	if (chip->mixer_data) {
1023 		/* use amplifier.  the signal is connected from route A
1024 		 * to the amp.  the amp has its headphone and speaker
1025 		 * volumes and mute switches, so we use them instead of
1026 		 * screamer registers.
1027 		 * in this case, it seems the route C is not used.
1028 		 */
1029 		err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_amp_vol),
1030 					snd_pmac_awacs_amp_vol);
1031 		if (err < 0)
1032 			return err;
1033 		/* overwrite */
1034 		chip->master_sw_ctl = snd_ctl_new1(&snd_pmac_awacs_amp_hp_sw,
1035 							chip);
1036 		err = snd_ctl_add(chip->card, chip->master_sw_ctl);
1037 		if (err < 0)
1038 			return err;
1039 		chip->speaker_sw_ctl = snd_ctl_new1(&snd_pmac_awacs_amp_spk_sw,
1040 							chip);
1041 		err = snd_ctl_add(chip->card, chip->speaker_sw_ctl);
1042 		if (err < 0)
1043 			return err;
1044 	} else
1045 #endif /* PMAC_AMP_AVAIL */
1046 	{
1047 		/* route A = headphone, route C = speaker */
1048 		err = snd_ctl_add(chip->card,
1049 		    (speaker_vol = snd_ctl_new1(snd_pmac_awacs_speaker_vol,
1050 						chip)));
1051 		if (err < 0)
1052 			return err;
1053 		chip->speaker_sw_ctl = snd_ctl_new1(imac1
1054 				? &snd_pmac_awacs_speaker_sw_imac1
1055 				: imac2
1056 				? &snd_pmac_awacs_speaker_sw_imac2
1057 				: &snd_pmac_awacs_speaker_sw, chip);
1058 		err = snd_ctl_add(chip->card, chip->speaker_sw_ctl);
1059 		if (err < 0)
1060 			return err;
1061 	}
1062 
1063 	if (pm5500 || imac || lombard) {
1064 		vmaster_sw = snd_ctl_make_virtual_master(
1065 			"Master Playback Switch", (unsigned int *) NULL);
1066 		err = snd_ctl_add_slave_uncached(vmaster_sw,
1067 						 chip->master_sw_ctl);
1068 		if (err < 0)
1069 			return err;
1070 		err = snd_ctl_add_slave_uncached(vmaster_sw,
1071 						  chip->speaker_sw_ctl);
1072 		if (err < 0)
1073 			return err;
1074 		err = snd_ctl_add(chip->card, vmaster_sw);
1075 		if (err < 0)
1076 			return err;
1077 		vmaster_vol = snd_ctl_make_virtual_master(
1078 			"Master Playback Volume", (unsigned int *) NULL);
1079 		err = snd_ctl_add_slave(vmaster_vol, master_vol);
1080 		if (err < 0)
1081 			return err;
1082 		err = snd_ctl_add_slave(vmaster_vol, speaker_vol);
1083 		if (err < 0)
1084 			return err;
1085 		err = snd_ctl_add(chip->card, vmaster_vol);
1086 		if (err < 0)
1087 			return err;
1088 	}
1089 
1090 	if (beige || g4agp)
1091 		err = build_mixers(chip,
1092 				ARRAY_SIZE(snd_pmac_screamer_mic_boost_beige),
1093 				snd_pmac_screamer_mic_boost_beige);
1094 	else if (imac)
1095 		err = build_mixers(chip,
1096 				ARRAY_SIZE(snd_pmac_screamer_mic_boost_imac),
1097 				snd_pmac_screamer_mic_boost_imac);
1098 	else if (chip->model == PMAC_SCREAMER)
1099 		err = build_mixers(chip,
1100 				ARRAY_SIZE(snd_pmac_screamer_mic_boost),
1101 				snd_pmac_screamer_mic_boost);
1102 	else if (pm7500)
1103 		err = build_mixers(chip,
1104 				ARRAY_SIZE(snd_pmac_awacs_mic_boost_pmac7500),
1105 				snd_pmac_awacs_mic_boost_pmac7500);
1106 	else
1107 		err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_mic_boost),
1108 				snd_pmac_awacs_mic_boost);
1109 	if (err < 0)
1110 		return err;
1111 
1112 	/*
1113 	 * set lowlevel callbacks
1114 	 */
1115 	chip->set_format = snd_pmac_awacs_set_format;
1116 #ifdef CONFIG_PM
1117 	chip->suspend = snd_pmac_awacs_suspend;
1118 	chip->resume = snd_pmac_awacs_resume;
1119 #endif
1120 #ifdef PMAC_SUPPORT_AUTOMUTE
1121 	err = snd_pmac_add_automute(chip);
1122 	if (err < 0)
1123 		return err;
1124 	chip->detect_headphone = snd_pmac_awacs_detect_headphone;
1125 	chip->update_automute = snd_pmac_awacs_update_automute;
1126 	snd_pmac_awacs_update_automute(chip, 0); /* update the status only */
1127 #endif
1128 	if (chip->model == PMAC_SCREAMER) {
1129 		snd_pmac_awacs_write_noreg(chip, 6, chip->awacs_reg[6]);
1130 		snd_pmac_awacs_write_noreg(chip, 0, chip->awacs_reg[0]);
1131 	}
1132 
1133 	return 0;
1134 }
1135