[ALSA] cmipci: allow 96 kHz playback on non-multichannel rear
[linux-2.6.git] / sound / ppc / pmac.c
1 /*
2  * PMac DBDMA lowlevel functions
3  *
4  * Copyright (c) by Takashi Iwai <tiwai@suse.de>
5  * code based on dmasound.c.
6  *
7  *   This program is free software; you can redistribute it and/or modify
8  *   it under the terms of the GNU General Public License as published by
9  *   the Free Software Foundation; either version 2 of the License, or
10  *   (at your option) any later version.
11  *
12  *   This program is distributed in the hope that it will be useful,
13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *   GNU General Public License for more details.
16  *
17  *   You should have received a copy of the GNU General Public License
18  *   along with this program; if not, write to the Free Software
19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
20  */
21
22
23 #include <sound/driver.h>
24 #include <asm/io.h>
25 #include <asm/irq.h>
26 #include <linux/init.h>
27 #include <linux/delay.h>
28 #include <linux/slab.h>
29 #include <linux/interrupt.h>
30 #include <linux/pci.h>
31 #include <linux/dma-mapping.h>
32 #include <sound/core.h>
33 #include "pmac.h"
34 #include <sound/pcm_params.h>
35 #include <asm/pmac_feature.h>
36 #include <asm/pci-bridge.h>
37
38
39 /* fixed frequency table for awacs, screamer, burgundy, DACA (44100 max) */
40 static int awacs_freqs[8] = {
41         44100, 29400, 22050, 17640, 14700, 11025, 8820, 7350
42 };
43 /* fixed frequency table for tumbler */
44 static int tumbler_freqs[1] = {
45         44100
46 };
47
48 /*
49  * allocate DBDMA command arrays
50  */
51 static int snd_pmac_dbdma_alloc(struct snd_pmac *chip, struct pmac_dbdma *rec, int size)
52 {
53         unsigned int rsize = sizeof(struct dbdma_cmd) * (size + 1);
54
55         rec->space = dma_alloc_coherent(&chip->pdev->dev, rsize,
56                                         &rec->dma_base, GFP_KERNEL);
57         if (rec->space == NULL)
58                 return -ENOMEM;
59         rec->size = size;
60         memset(rec->space, 0, rsize);
61         rec->cmds = (void __iomem *)DBDMA_ALIGN(rec->space);
62         rec->addr = rec->dma_base + (unsigned long)((char *)rec->cmds - (char *)rec->space);
63
64         return 0;
65 }
66
67 static void snd_pmac_dbdma_free(struct snd_pmac *chip, struct pmac_dbdma *rec)
68 {
69         if (rec->space) {
70                 unsigned int rsize = sizeof(struct dbdma_cmd) * (rec->size + 1);
71
72                 dma_free_coherent(&chip->pdev->dev, rsize, rec->space, rec->dma_base);
73         }
74 }
75
76
77 /*
78  * pcm stuff
79  */
80
81 /*
82  * look up frequency table
83  */
84
85 unsigned int snd_pmac_rate_index(struct snd_pmac *chip, struct pmac_stream *rec, unsigned int rate)
86 {
87         int i, ok, found;
88
89         ok = rec->cur_freqs;
90         if (rate > chip->freq_table[0])
91                 return 0;
92         found = 0;
93         for (i = 0; i < chip->num_freqs; i++, ok >>= 1) {
94                 if (! (ok & 1)) continue;
95                 found = i;
96                 if (rate >= chip->freq_table[i])
97                         break;
98         }
99         return found;
100 }
101
102 /*
103  * check whether another stream is active
104  */
105 static inline int another_stream(int stream)
106 {
107         return (stream == SNDRV_PCM_STREAM_PLAYBACK) ?
108                 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
109 }
110
111 /*
112  * allocate buffers
113  */
114 static int snd_pmac_pcm_hw_params(struct snd_pcm_substream *subs,
115                                   struct snd_pcm_hw_params *hw_params)
116 {
117         return snd_pcm_lib_malloc_pages(subs, params_buffer_bytes(hw_params));
118 }
119
120 /*
121  * release buffers
122  */
123 static int snd_pmac_pcm_hw_free(struct snd_pcm_substream *subs)
124 {
125         snd_pcm_lib_free_pages(subs);
126         return 0;
127 }
128
129 /*
130  * get a stream of the opposite direction
131  */
132 static struct pmac_stream *snd_pmac_get_stream(struct snd_pmac *chip, int stream)
133 {
134         switch (stream) {
135         case SNDRV_PCM_STREAM_PLAYBACK:
136                 return &chip->playback;
137         case SNDRV_PCM_STREAM_CAPTURE:
138                 return &chip->capture;
139         default:
140                 snd_BUG();
141                 return NULL;
142         }
143 }
144
145 /*
146  * wait while run status is on
147  */
148 static inline void
149 snd_pmac_wait_ack(struct pmac_stream *rec)
150 {
151         int timeout = 50000;
152         while ((in_le32(&rec->dma->status) & RUN) && timeout-- > 0)
153                 udelay(1);
154 }
155
156 /*
157  * set the format and rate to the chip.
158  * call the lowlevel function if defined (e.g. for AWACS).
159  */
160 static void snd_pmac_pcm_set_format(struct snd_pmac *chip)
161 {
162         /* set up frequency and format */
163         out_le32(&chip->awacs->control, chip->control_mask | (chip->rate_index << 8));
164         out_le32(&chip->awacs->byteswap, chip->format == SNDRV_PCM_FORMAT_S16_LE ? 1 : 0);
165         if (chip->set_format)
166                 chip->set_format(chip);
167 }
168
169 /*
170  * stop the DMA transfer
171  */
172 static inline void snd_pmac_dma_stop(struct pmac_stream *rec)
173 {
174         out_le32(&rec->dma->control, (RUN|WAKE|FLUSH|PAUSE) << 16);
175         snd_pmac_wait_ack(rec);
176 }
177
178 /*
179  * set the command pointer address
180  */
181 static inline void snd_pmac_dma_set_command(struct pmac_stream *rec, struct pmac_dbdma *cmd)
182 {
183         out_le32(&rec->dma->cmdptr, cmd->addr);
184 }
185
186 /*
187  * start the DMA
188  */
189 static inline void snd_pmac_dma_run(struct pmac_stream *rec, int status)
190 {
191         out_le32(&rec->dma->control, status | (status << 16));
192 }
193
194
195 /*
196  * prepare playback/capture stream
197  */
198 static int snd_pmac_pcm_prepare(struct snd_pmac *chip, struct pmac_stream *rec, struct snd_pcm_substream *subs)
199 {
200         int i;
201         volatile struct dbdma_cmd __iomem *cp;
202         struct snd_pcm_runtime *runtime = subs->runtime;
203         int rate_index;
204         long offset;
205         struct pmac_stream *astr;
206         
207         rec->dma_size = snd_pcm_lib_buffer_bytes(subs);
208         rec->period_size = snd_pcm_lib_period_bytes(subs);
209         rec->nperiods = rec->dma_size / rec->period_size;
210         rec->cur_period = 0;
211         rate_index = snd_pmac_rate_index(chip, rec, runtime->rate);
212
213         /* set up constraints */
214         astr = snd_pmac_get_stream(chip, another_stream(rec->stream));
215         if (! astr)
216                 return -EINVAL;
217         astr->cur_freqs = 1 << rate_index;
218         astr->cur_formats = 1 << runtime->format;
219         chip->rate_index = rate_index;
220         chip->format = runtime->format;
221
222         /* We really want to execute a DMA stop command, after the AWACS
223          * is initialized.
224          * For reasons I don't understand, it stops the hissing noise
225          * common to many PowerBook G3 systems and random noise otherwise
226          * captured on iBook2's about every third time. -ReneR
227          */
228         spin_lock_irq(&chip->reg_lock);
229         snd_pmac_dma_stop(rec);
230         st_le16(&chip->extra_dma.cmds->command, DBDMA_STOP);
231         snd_pmac_dma_set_command(rec, &chip->extra_dma);
232         snd_pmac_dma_run(rec, RUN);
233         spin_unlock_irq(&chip->reg_lock);
234         mdelay(5);
235         spin_lock_irq(&chip->reg_lock);
236         /* continuous DMA memory type doesn't provide the physical address,
237          * so we need to resolve the address here...
238          */
239         offset = runtime->dma_addr;
240         for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) {
241                 st_le32(&cp->phy_addr, offset);
242                 st_le16(&cp->req_count, rec->period_size);
243                 /*st_le16(&cp->res_count, 0);*/
244                 st_le16(&cp->xfer_status, 0);
245                 offset += rec->period_size;
246         }
247         /* make loop */
248         st_le16(&cp->command, DBDMA_NOP + BR_ALWAYS);
249         st_le32(&cp->cmd_dep, rec->cmd.addr);
250
251         snd_pmac_dma_stop(rec);
252         snd_pmac_dma_set_command(rec, &rec->cmd);
253         spin_unlock_irq(&chip->reg_lock);
254
255         return 0;
256 }
257
258
259 /*
260  * PCM trigger/stop
261  */
262 static int snd_pmac_pcm_trigger(struct snd_pmac *chip, struct pmac_stream *rec,
263                                 struct snd_pcm_substream *subs, int cmd)
264 {
265         volatile struct dbdma_cmd __iomem *cp;
266         int i, command;
267
268         switch (cmd) {
269         case SNDRV_PCM_TRIGGER_START:
270         case SNDRV_PCM_TRIGGER_RESUME:
271                 if (rec->running)
272                         return -EBUSY;
273                 command = (subs->stream == SNDRV_PCM_STREAM_PLAYBACK ?
274                            OUTPUT_MORE : INPUT_MORE) + INTR_ALWAYS;
275                 spin_lock(&chip->reg_lock);
276                 snd_pmac_beep_stop(chip);
277                 snd_pmac_pcm_set_format(chip);
278                 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++)
279                         out_le16(&cp->command, command);
280                 snd_pmac_dma_set_command(rec, &rec->cmd);
281                 (void)in_le32(&rec->dma->status);
282                 snd_pmac_dma_run(rec, RUN|WAKE);
283                 rec->running = 1;
284                 spin_unlock(&chip->reg_lock);
285                 break;
286
287         case SNDRV_PCM_TRIGGER_STOP:
288         case SNDRV_PCM_TRIGGER_SUSPEND:
289                 spin_lock(&chip->reg_lock);
290                 rec->running = 0;
291                 /*printk("stopped!!\n");*/
292                 snd_pmac_dma_stop(rec);
293                 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++)
294                         out_le16(&cp->command, DBDMA_STOP);
295                 spin_unlock(&chip->reg_lock);
296                 break;
297
298         default:
299                 return -EINVAL;
300         }
301
302         return 0;
303 }
304
305 /*
306  * return the current pointer
307  */
308 inline
309 static snd_pcm_uframes_t snd_pmac_pcm_pointer(struct snd_pmac *chip,
310                                               struct pmac_stream *rec,
311                                               struct snd_pcm_substream *subs)
312 {
313         int count = 0;
314
315 #if 1 /* hmm.. how can we get the current dma pointer?? */
316         int stat;
317         volatile struct dbdma_cmd __iomem *cp = &rec->cmd.cmds[rec->cur_period];
318         stat = ld_le16(&cp->xfer_status);
319         if (stat & (ACTIVE|DEAD)) {
320                 count = in_le16(&cp->res_count);
321                 if (count)
322                         count = rec->period_size - count;
323         }
324 #endif
325         count += rec->cur_period * rec->period_size;
326         /*printk("pointer=%d\n", count);*/
327         return bytes_to_frames(subs->runtime, count);
328 }
329
330 /*
331  * playback
332  */
333
334 static int snd_pmac_playback_prepare(struct snd_pcm_substream *subs)
335 {
336         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
337         return snd_pmac_pcm_prepare(chip, &chip->playback, subs);
338 }
339
340 static int snd_pmac_playback_trigger(struct snd_pcm_substream *subs,
341                                      int cmd)
342 {
343         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
344         return snd_pmac_pcm_trigger(chip, &chip->playback, subs, cmd);
345 }
346
347 static snd_pcm_uframes_t snd_pmac_playback_pointer(struct snd_pcm_substream *subs)
348 {
349         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
350         return snd_pmac_pcm_pointer(chip, &chip->playback, subs);
351 }
352
353
354 /*
355  * capture
356  */
357
358 static int snd_pmac_capture_prepare(struct snd_pcm_substream *subs)
359 {
360         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
361         return snd_pmac_pcm_prepare(chip, &chip->capture, subs);
362 }
363
364 static int snd_pmac_capture_trigger(struct snd_pcm_substream *subs,
365                                     int cmd)
366 {
367         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
368         return snd_pmac_pcm_trigger(chip, &chip->capture, subs, cmd);
369 }
370
371 static snd_pcm_uframes_t snd_pmac_capture_pointer(struct snd_pcm_substream *subs)
372 {
373         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
374         return snd_pmac_pcm_pointer(chip, &chip->capture, subs);
375 }
376
377
378 /*
379  * update playback/capture pointer from interrupts
380  */
381 static void snd_pmac_pcm_update(struct snd_pmac *chip, struct pmac_stream *rec)
382 {
383         volatile struct dbdma_cmd __iomem *cp;
384         int c;
385         int stat;
386
387         spin_lock(&chip->reg_lock);
388         if (rec->running) {
389                 cp = &rec->cmd.cmds[rec->cur_period];
390                 for (c = 0; c < rec->nperiods; c++) { /* at most all fragments */
391                         stat = ld_le16(&cp->xfer_status);
392                         if (! (stat & ACTIVE))
393                                 break;
394                         /*printk("update frag %d\n", rec->cur_period);*/
395                         st_le16(&cp->xfer_status, 0);
396                         st_le16(&cp->req_count, rec->period_size);
397                         /*st_le16(&cp->res_count, 0);*/
398                         rec->cur_period++;
399                         if (rec->cur_period >= rec->nperiods) {
400                                 rec->cur_period = 0;
401                                 cp = rec->cmd.cmds;
402                         } else
403                                 cp++;
404                         spin_unlock(&chip->reg_lock);
405                         snd_pcm_period_elapsed(rec->substream);
406                         spin_lock(&chip->reg_lock);
407                 }
408         }
409         spin_unlock(&chip->reg_lock);
410 }
411
412
413 /*
414  * hw info
415  */
416
417 static struct snd_pcm_hardware snd_pmac_playback =
418 {
419         .info =                 (SNDRV_PCM_INFO_INTERLEAVED |
420                                  SNDRV_PCM_INFO_MMAP |
421                                  SNDRV_PCM_INFO_MMAP_VALID |
422                                  SNDRV_PCM_INFO_RESUME),
423         .formats =              SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE,
424         .rates =                SNDRV_PCM_RATE_8000_44100,
425         .rate_min =             7350,
426         .rate_max =             44100,
427         .channels_min =         2,
428         .channels_max =         2,
429         .buffer_bytes_max =     131072,
430         .period_bytes_min =     256,
431         .period_bytes_max =     16384,
432         .periods_min =          3,
433         .periods_max =          PMAC_MAX_FRAGS,
434 };
435
436 static struct snd_pcm_hardware snd_pmac_capture =
437 {
438         .info =                 (SNDRV_PCM_INFO_INTERLEAVED |
439                                  SNDRV_PCM_INFO_MMAP |
440                                  SNDRV_PCM_INFO_MMAP_VALID |
441                                  SNDRV_PCM_INFO_RESUME),
442         .formats =              SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE,
443         .rates =                SNDRV_PCM_RATE_8000_44100,
444         .rate_min =             7350,
445         .rate_max =             44100,
446         .channels_min =         2,
447         .channels_max =         2,
448         .buffer_bytes_max =     131072,
449         .period_bytes_min =     256,
450         .period_bytes_max =     16384,
451         .periods_min =          3,
452         .periods_max =          PMAC_MAX_FRAGS,
453 };
454
455
456 #if 0 // NYI
457 static int snd_pmac_hw_rule_rate(struct snd_pcm_hw_params *params,
458                                  struct snd_pcm_hw_rule *rule)
459 {
460         struct snd_pmac *chip = rule->private;
461         struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]);
462         int i, freq_table[8], num_freqs;
463
464         if (! rec)
465                 return -EINVAL;
466         num_freqs = 0;
467         for (i = chip->num_freqs - 1; i >= 0; i--) {
468                 if (rec->cur_freqs & (1 << i))
469                         freq_table[num_freqs++] = chip->freq_table[i];
470         }
471
472         return snd_interval_list(hw_param_interval(params, rule->var),
473                                  num_freqs, freq_table, 0);
474 }
475
476 static int snd_pmac_hw_rule_format(struct snd_pcm_hw_params *params,
477                                    struct snd_pcm_hw_rule *rule)
478 {
479         struct snd_pmac *chip = rule->private;
480         struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]);
481
482         if (! rec)
483                 return -EINVAL;
484         return snd_mask_refine_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT),
485                                    rec->cur_formats);
486 }
487 #endif // NYI
488
489 static int snd_pmac_pcm_open(struct snd_pmac *chip, struct pmac_stream *rec,
490                              struct snd_pcm_substream *subs)
491 {
492         struct snd_pcm_runtime *runtime = subs->runtime;
493         int i;
494
495         /* look up frequency table and fill bit mask */
496         runtime->hw.rates = 0;
497         for (i = 0; i < chip->num_freqs; i++)
498                 if (chip->freqs_ok & (1 << i))
499                         runtime->hw.rates |=
500                                 snd_pcm_rate_to_rate_bit(chip->freq_table[i]);
501
502         /* check for minimum and maximum rates */
503         for (i = 0; i < chip->num_freqs; i++) {
504                 if (chip->freqs_ok & (1 << i)) {
505                         runtime->hw.rate_max = chip->freq_table[i];
506                         break;
507                 }
508         }
509         for (i = chip->num_freqs - 1; i >= 0; i--) {
510                 if (chip->freqs_ok & (1 << i)) {
511                         runtime->hw.rate_min = chip->freq_table[i];
512                         break;
513                 }
514         }
515         runtime->hw.formats = chip->formats_ok;
516         if (chip->can_capture) {
517                 if (! chip->can_duplex)
518                         runtime->hw.info |= SNDRV_PCM_INFO_HALF_DUPLEX;
519                 runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
520         }
521         runtime->private_data = rec;
522         rec->substream = subs;
523
524 #if 0 /* FIXME: still under development.. */
525         snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
526                             snd_pmac_hw_rule_rate, chip, rec->stream, -1);
527         snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT,
528                             snd_pmac_hw_rule_format, chip, rec->stream, -1);
529 #endif
530
531         runtime->hw.periods_max = rec->cmd.size - 1;
532
533         /* constraints to fix choppy sound */
534         snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
535         return 0;
536 }
537
538 static int snd_pmac_pcm_close(struct snd_pmac *chip, struct pmac_stream *rec,
539                               struct snd_pcm_substream *subs)
540 {
541         struct pmac_stream *astr;
542
543         snd_pmac_dma_stop(rec);
544
545         astr = snd_pmac_get_stream(chip, another_stream(rec->stream));
546         if (! astr)
547                 return -EINVAL;
548
549         /* reset constraints */
550         astr->cur_freqs = chip->freqs_ok;
551         astr->cur_formats = chip->formats_ok;
552         
553         return 0;
554 }
555
556 static int snd_pmac_playback_open(struct snd_pcm_substream *subs)
557 {
558         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
559
560         subs->runtime->hw = snd_pmac_playback;
561         return snd_pmac_pcm_open(chip, &chip->playback, subs);
562 }
563
564 static int snd_pmac_capture_open(struct snd_pcm_substream *subs)
565 {
566         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
567
568         subs->runtime->hw = snd_pmac_capture;
569         return snd_pmac_pcm_open(chip, &chip->capture, subs);
570 }
571
572 static int snd_pmac_playback_close(struct snd_pcm_substream *subs)
573 {
574         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
575
576         return snd_pmac_pcm_close(chip, &chip->playback, subs);
577 }
578
579 static int snd_pmac_capture_close(struct snd_pcm_substream *subs)
580 {
581         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
582
583         return snd_pmac_pcm_close(chip, &chip->capture, subs);
584 }
585
586 /*
587  */
588
589 static struct snd_pcm_ops snd_pmac_playback_ops = {
590         .open =         snd_pmac_playback_open,
591         .close =        snd_pmac_playback_close,
592         .ioctl =        snd_pcm_lib_ioctl,
593         .hw_params =    snd_pmac_pcm_hw_params,
594         .hw_free =      snd_pmac_pcm_hw_free,
595         .prepare =      snd_pmac_playback_prepare,
596         .trigger =      snd_pmac_playback_trigger,
597         .pointer =      snd_pmac_playback_pointer,
598 };
599
600 static struct snd_pcm_ops snd_pmac_capture_ops = {
601         .open =         snd_pmac_capture_open,
602         .close =        snd_pmac_capture_close,
603         .ioctl =        snd_pcm_lib_ioctl,
604         .hw_params =    snd_pmac_pcm_hw_params,
605         .hw_free =      snd_pmac_pcm_hw_free,
606         .prepare =      snd_pmac_capture_prepare,
607         .trigger =      snd_pmac_capture_trigger,
608         .pointer =      snd_pmac_capture_pointer,
609 };
610
611 int __init snd_pmac_pcm_new(struct snd_pmac *chip)
612 {
613         struct snd_pcm *pcm;
614         int err;
615         int num_captures = 1;
616
617         if (! chip->can_capture)
618                 num_captures = 0;
619         err = snd_pcm_new(chip->card, chip->card->driver, 0, 1, num_captures, &pcm);
620         if (err < 0)
621                 return err;
622
623         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_pmac_playback_ops);
624         if (chip->can_capture)
625                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_pmac_capture_ops);
626
627         pcm->private_data = chip;
628         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
629         strcpy(pcm->name, chip->card->shortname);
630         chip->pcm = pcm;
631
632         chip->formats_ok = SNDRV_PCM_FMTBIT_S16_BE;
633         if (chip->can_byte_swap)
634                 chip->formats_ok |= SNDRV_PCM_FMTBIT_S16_LE;
635
636         chip->playback.cur_formats = chip->formats_ok;
637         chip->capture.cur_formats = chip->formats_ok;
638         chip->playback.cur_freqs = chip->freqs_ok;
639         chip->capture.cur_freqs = chip->freqs_ok;
640
641         /* preallocate 64k buffer */
642         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
643                                               &chip->pdev->dev,
644                                               64 * 1024, 64 * 1024);
645
646         return 0;
647 }
648
649
650 static void snd_pmac_dbdma_reset(struct snd_pmac *chip)
651 {
652         out_le32(&chip->playback.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
653         snd_pmac_wait_ack(&chip->playback);
654         out_le32(&chip->capture.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
655         snd_pmac_wait_ack(&chip->capture);
656 }
657
658
659 /*
660  * handling beep
661  */
662 void snd_pmac_beep_dma_start(struct snd_pmac *chip, int bytes, unsigned long addr, int speed)
663 {
664         struct pmac_stream *rec = &chip->playback;
665
666         snd_pmac_dma_stop(rec);
667         st_le16(&chip->extra_dma.cmds->req_count, bytes);
668         st_le16(&chip->extra_dma.cmds->xfer_status, 0);
669         st_le32(&chip->extra_dma.cmds->cmd_dep, chip->extra_dma.addr);
670         st_le32(&chip->extra_dma.cmds->phy_addr, addr);
671         st_le16(&chip->extra_dma.cmds->command, OUTPUT_MORE + BR_ALWAYS);
672         out_le32(&chip->awacs->control,
673                  (in_le32(&chip->awacs->control) & ~0x1f00)
674                  | (speed << 8));
675         out_le32(&chip->awacs->byteswap, 0);
676         snd_pmac_dma_set_command(rec, &chip->extra_dma);
677         snd_pmac_dma_run(rec, RUN);
678 }
679
680 void snd_pmac_beep_dma_stop(struct snd_pmac *chip)
681 {
682         snd_pmac_dma_stop(&chip->playback);
683         st_le16(&chip->extra_dma.cmds->command, DBDMA_STOP);
684         snd_pmac_pcm_set_format(chip); /* reset format */
685 }
686
687
688 /*
689  * interrupt handlers
690  */
691 static irqreturn_t
692 snd_pmac_tx_intr(int irq, void *devid)
693 {
694         struct snd_pmac *chip = devid;
695         snd_pmac_pcm_update(chip, &chip->playback);
696         return IRQ_HANDLED;
697 }
698
699
700 static irqreturn_t
701 snd_pmac_rx_intr(int irq, void *devid)
702 {
703         struct snd_pmac *chip = devid;
704         snd_pmac_pcm_update(chip, &chip->capture);
705         return IRQ_HANDLED;
706 }
707
708
709 static irqreturn_t
710 snd_pmac_ctrl_intr(int irq, void *devid)
711 {
712         struct snd_pmac *chip = devid;
713         int ctrl = in_le32(&chip->awacs->control);
714
715         /*printk("pmac: control interrupt.. 0x%x\n", ctrl);*/
716         if (ctrl & MASK_PORTCHG) {
717                 /* do something when headphone is plugged/unplugged? */
718                 if (chip->update_automute)
719                         chip->update_automute(chip, 1);
720         }
721         if (ctrl & MASK_CNTLERR) {
722                 int err = (in_le32(&chip->awacs->codec_stat) & MASK_ERRCODE) >> 16;
723                 if (err && chip->model <= PMAC_SCREAMER)
724                         snd_printk(KERN_DEBUG "error %x\n", err);
725         }
726         /* Writing 1s to the CNTLERR and PORTCHG bits clears them... */
727         out_le32(&chip->awacs->control, ctrl);
728         return IRQ_HANDLED;
729 }
730
731
732 /*
733  * a wrapper to feature call for compatibility
734  */
735 static void snd_pmac_sound_feature(struct snd_pmac *chip, int enable)
736 {
737         if (ppc_md.feature_call)
738                 ppc_md.feature_call(PMAC_FTR_SOUND_CHIP_ENABLE, chip->node, 0, enable);
739 }
740
741 /*
742  * release resources
743  */
744
745 static int snd_pmac_free(struct snd_pmac *chip)
746 {
747         /* stop sounds */
748         if (chip->initialized) {
749                 snd_pmac_dbdma_reset(chip);
750                 /* disable interrupts from awacs interface */
751                 out_le32(&chip->awacs->control, in_le32(&chip->awacs->control) & 0xfff);
752         }
753
754         if (chip->node)
755                 snd_pmac_sound_feature(chip, 0);
756
757         /* clean up mixer if any */
758         if (chip->mixer_free)
759                 chip->mixer_free(chip);
760
761         snd_pmac_detach_beep(chip);
762
763         /* release resources */
764         if (chip->irq >= 0)
765                 free_irq(chip->irq, (void*)chip);
766         if (chip->tx_irq >= 0)
767                 free_irq(chip->tx_irq, (void*)chip);
768         if (chip->rx_irq >= 0)
769                 free_irq(chip->rx_irq, (void*)chip);
770         snd_pmac_dbdma_free(chip, &chip->playback.cmd);
771         snd_pmac_dbdma_free(chip, &chip->capture.cmd);
772         snd_pmac_dbdma_free(chip, &chip->extra_dma);
773         if (chip->macio_base)
774                 iounmap(chip->macio_base);
775         if (chip->latch_base)
776                 iounmap(chip->latch_base);
777         if (chip->awacs)
778                 iounmap(chip->awacs);
779         if (chip->playback.dma)
780                 iounmap(chip->playback.dma);
781         if (chip->capture.dma)
782                 iounmap(chip->capture.dma);
783
784         if (chip->node) {
785                 int i;
786                 for (i = 0; i < 3; i++) {
787                         if (chip->requested & (1 << i))
788                                 release_mem_region(chip->rsrc[i].start,
789                                                    chip->rsrc[i].end -
790                                                    chip->rsrc[i].start + 1);
791                 }
792         }
793
794         if (chip->pdev)
795                 pci_dev_put(chip->pdev);
796         of_node_put(chip->node);
797         kfree(chip);
798         return 0;
799 }
800
801
802 /*
803  * free the device
804  */
805 static int snd_pmac_dev_free(struct snd_device *device)
806 {
807         struct snd_pmac *chip = device->device_data;
808         return snd_pmac_free(chip);
809 }
810
811
812 /*
813  * check the machine support byteswap (little-endian)
814  */
815
816 static void __init detect_byte_swap(struct snd_pmac *chip)
817 {
818         struct device_node *mio;
819
820         /* if seems that Keylargo can't byte-swap  */
821         for (mio = chip->node->parent; mio; mio = mio->parent) {
822                 if (strcmp(mio->name, "mac-io") == 0) {
823                         if (of_device_is_compatible(mio, "Keylargo"))
824                                 chip->can_byte_swap = 0;
825                         break;
826                 }
827         }
828
829         /* it seems the Pismo & iBook can't byte-swap in hardware. */
830         if (machine_is_compatible("PowerBook3,1") ||
831             machine_is_compatible("PowerBook2,1"))
832                 chip->can_byte_swap = 0 ;
833
834         if (machine_is_compatible("PowerBook2,1"))
835                 chip->can_duplex = 0;
836 }
837
838
839 /*
840  * detect a sound chip
841  */
842 static int __init snd_pmac_detect(struct snd_pmac *chip)
843 {
844         struct device_node *sound;
845         struct device_node *dn;
846         const unsigned int *prop;
847         unsigned int l;
848         struct macio_chip* macio;
849
850         if (!machine_is(powermac))
851                 return -ENODEV;
852
853         chip->subframe = 0;
854         chip->revision = 0;
855         chip->freqs_ok = 0xff; /* all ok */
856         chip->model = PMAC_AWACS;
857         chip->can_byte_swap = 1;
858         chip->can_duplex = 1;
859         chip->can_capture = 1;
860         chip->num_freqs = ARRAY_SIZE(awacs_freqs);
861         chip->freq_table = awacs_freqs;
862         chip->pdev = NULL;
863
864         chip->control_mask = MASK_IEPC | MASK_IEE | 0x11; /* default */
865
866         /* check machine type */
867         if (machine_is_compatible("AAPL,3400/2400")
868             || machine_is_compatible("AAPL,3500"))
869                 chip->is_pbook_3400 = 1;
870         else if (machine_is_compatible("PowerBook1,1")
871                  || machine_is_compatible("AAPL,PowerBook1998"))
872                 chip->is_pbook_G3 = 1;
873         chip->node = of_find_node_by_name(NULL, "awacs");
874         sound = of_node_get(chip->node);
875
876         /*
877          * powermac G3 models have a node called "davbus"
878          * with a child called "sound".
879          */
880         if (!chip->node)
881                 chip->node = of_find_node_by_name(NULL, "davbus");
882         /*
883          * if we didn't find a davbus device, try 'i2s-a' since
884          * this seems to be what iBooks have
885          */
886         if (! chip->node) {
887                 chip->node = of_find_node_by_name(NULL, "i2s-a");
888                 if (chip->node && chip->node->parent &&
889                     chip->node->parent->parent) {
890                         if (of_device_is_compatible(chip->node->parent->parent,
891                                                  "K2-Keylargo"))
892                                 chip->is_k2 = 1;
893                 }
894         }
895         if (! chip->node)
896                 return -ENODEV;
897
898         if (!sound) {
899                 sound = of_find_node_by_name(NULL, "sound");
900                 while (sound && sound->parent != chip->node)
901                         sound = of_find_node_by_name(sound, "sound");
902         }
903         if (! sound) {
904                 of_node_put(chip->node);
905                 chip->node = NULL;
906                 return -ENODEV;
907         }
908         prop = of_get_property(sound, "sub-frame", NULL);
909         if (prop && *prop < 16)
910                 chip->subframe = *prop;
911         prop = of_get_property(sound, "layout-id", NULL);
912         if (prop) {
913                 /* partly deprecate snd-powermac, for those machines
914                  * that have a layout-id property for now */
915                 printk(KERN_INFO "snd-powermac no longer handles any "
916                                  "machines with a layout-id property "
917                                  "in the device-tree, use snd-aoa.\n");
918                 of_node_put(sound);
919                 of_node_put(chip->node);
920                 chip->node = NULL;
921                 return -ENODEV;
922         }
923         /* This should be verified on older screamers */
924         if (of_device_is_compatible(sound, "screamer")) {
925                 chip->model = PMAC_SCREAMER;
926                 // chip->can_byte_swap = 0; /* FIXME: check this */
927         }
928         if (of_device_is_compatible(sound, "burgundy")) {
929                 chip->model = PMAC_BURGUNDY;
930                 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
931         }
932         if (of_device_is_compatible(sound, "daca")) {
933                 chip->model = PMAC_DACA;
934                 chip->can_capture = 0;  /* no capture */
935                 chip->can_duplex = 0;
936                 // chip->can_byte_swap = 0; /* FIXME: check this */
937                 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
938         }
939         if (of_device_is_compatible(sound, "tumbler")) {
940                 chip->model = PMAC_TUMBLER;
941                 chip->can_capture = 0;  /* no capture */
942                 chip->can_duplex = 0;
943                 // chip->can_byte_swap = 0; /* FIXME: check this */
944                 chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
945                 chip->freq_table = tumbler_freqs;
946                 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
947         }
948         if (of_device_is_compatible(sound, "snapper")) {
949                 chip->model = PMAC_SNAPPER;
950                 // chip->can_byte_swap = 0; /* FIXME: check this */
951                 chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
952                 chip->freq_table = tumbler_freqs;
953                 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
954         }
955         prop = of_get_property(sound, "device-id", NULL);
956         if (prop)
957                 chip->device_id = *prop;
958         dn = of_find_node_by_name(NULL, "perch");
959         chip->has_iic = (dn != NULL);
960         of_node_put(dn);
961
962         /* We need the PCI device for DMA allocations, let's use a crude method
963          * for now ...
964          */
965         macio = macio_find(chip->node, macio_unknown);
966         if (macio == NULL)
967                 printk(KERN_WARNING "snd-powermac: can't locate macio !\n");
968         else {
969                 struct pci_dev *pdev = NULL;
970
971                 for_each_pci_dev(pdev) {
972                         struct device_node *np = pci_device_to_OF_node(pdev);
973                         if (np && np == macio->of_node) {
974                                 chip->pdev = pdev;
975                                 break;
976                         }
977                 }
978         }
979         if (chip->pdev == NULL)
980                 printk(KERN_WARNING "snd-powermac: can't locate macio PCI"
981                        " device !\n");
982
983         detect_byte_swap(chip);
984
985         /* look for a property saying what sample rates
986            are available */
987         prop = of_get_property(sound, "sample-rates", &l);
988         if (! prop)
989                 prop = of_get_property(sound, "output-frame-rates", &l);
990         if (prop) {
991                 int i;
992                 chip->freqs_ok = 0;
993                 for (l /= sizeof(int); l > 0; --l) {
994                         unsigned int r = *prop++;
995                         /* Apple 'Fixed' format */
996                         if (r >= 0x10000)
997                                 r >>= 16;
998                         for (i = 0; i < chip->num_freqs; ++i) {
999                                 if (r == chip->freq_table[i]) {
1000                                         chip->freqs_ok |= (1 << i);
1001                                         break;
1002                                 }
1003                         }
1004                 }
1005         } else {
1006                 /* assume only 44.1khz */
1007                 chip->freqs_ok = 1;
1008         }
1009
1010         of_node_put(sound);
1011         return 0;
1012 }
1013
1014 #ifdef PMAC_SUPPORT_AUTOMUTE
1015 /*
1016  * auto-mute
1017  */
1018 static int pmac_auto_mute_get(struct snd_kcontrol *kcontrol,
1019                               struct snd_ctl_elem_value *ucontrol)
1020 {
1021         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1022         ucontrol->value.integer.value[0] = chip->auto_mute;
1023         return 0;
1024 }
1025
1026 static int pmac_auto_mute_put(struct snd_kcontrol *kcontrol,
1027                               struct snd_ctl_elem_value *ucontrol)
1028 {
1029         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1030         if (ucontrol->value.integer.value[0] != chip->auto_mute) {
1031                 chip->auto_mute = ucontrol->value.integer.value[0];
1032                 if (chip->update_automute)
1033                         chip->update_automute(chip, 1);
1034                 return 1;
1035         }
1036         return 0;
1037 }
1038
1039 static int pmac_hp_detect_get(struct snd_kcontrol *kcontrol,
1040                               struct snd_ctl_elem_value *ucontrol)
1041 {
1042         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1043         if (chip->detect_headphone)
1044                 ucontrol->value.integer.value[0] = chip->detect_headphone(chip);
1045         else
1046                 ucontrol->value.integer.value[0] = 0;
1047         return 0;
1048 }
1049
1050 static struct snd_kcontrol_new auto_mute_controls[] __initdata = {
1051         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1052           .name = "Auto Mute Switch",
1053           .info = snd_pmac_boolean_mono_info,
1054           .get = pmac_auto_mute_get,
1055           .put = pmac_auto_mute_put,
1056         },
1057         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1058           .name = "Headphone Detection",
1059           .access = SNDRV_CTL_ELEM_ACCESS_READ,
1060           .info = snd_pmac_boolean_mono_info,
1061           .get = pmac_hp_detect_get,
1062         },
1063 };
1064
1065 int __init snd_pmac_add_automute(struct snd_pmac *chip)
1066 {
1067         int err;
1068         chip->auto_mute = 1;
1069         err = snd_ctl_add(chip->card, snd_ctl_new1(&auto_mute_controls[0], chip));
1070         if (err < 0) {
1071                 printk(KERN_ERR "snd-powermac: Failed to add automute control\n");
1072                 return err;
1073         }
1074         chip->hp_detect_ctl = snd_ctl_new1(&auto_mute_controls[1], chip);
1075         return snd_ctl_add(chip->card, chip->hp_detect_ctl);
1076 }
1077 #endif /* PMAC_SUPPORT_AUTOMUTE */
1078
1079 /*
1080  * create and detect a pmac chip record
1081  */
1082 int __init snd_pmac_new(struct snd_card *card, struct snd_pmac **chip_return)
1083 {
1084         struct snd_pmac *chip;
1085         struct device_node *np;
1086         int i, err;
1087         unsigned int irq;
1088         unsigned long ctrl_addr, txdma_addr, rxdma_addr;
1089         static struct snd_device_ops ops = {
1090                 .dev_free =     snd_pmac_dev_free,
1091         };
1092
1093         *chip_return = NULL;
1094
1095         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1096         if (chip == NULL)
1097                 return -ENOMEM;
1098         chip->card = card;
1099
1100         spin_lock_init(&chip->reg_lock);
1101         chip->irq = chip->tx_irq = chip->rx_irq = -1;
1102
1103         chip->playback.stream = SNDRV_PCM_STREAM_PLAYBACK;
1104         chip->capture.stream = SNDRV_PCM_STREAM_CAPTURE;
1105
1106         if ((err = snd_pmac_detect(chip)) < 0)
1107                 goto __error;
1108
1109         if (snd_pmac_dbdma_alloc(chip, &chip->playback.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
1110             snd_pmac_dbdma_alloc(chip, &chip->capture.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
1111             snd_pmac_dbdma_alloc(chip, &chip->extra_dma, 2) < 0) {
1112                 err = -ENOMEM;
1113                 goto __error;
1114         }
1115
1116         np = chip->node;
1117         chip->requested = 0;
1118         if (chip->is_k2) {
1119                 static char *rnames[] = {
1120                         "Sound Control", "Sound DMA" };
1121                 for (i = 0; i < 2; i ++) {
1122                         if (of_address_to_resource(np->parent, i,
1123                                                    &chip->rsrc[i])) {
1124                                 printk(KERN_ERR "snd: can't translate rsrc "
1125                                        " %d (%s)\n", i, rnames[i]);
1126                                 err = -ENODEV;
1127                                 goto __error;
1128                         }
1129                         if (request_mem_region(chip->rsrc[i].start,
1130                                                chip->rsrc[i].end -
1131                                                chip->rsrc[i].start + 1,
1132                                                rnames[i]) == NULL) {
1133                                 printk(KERN_ERR "snd: can't request rsrc "
1134                                        " %d (%s: 0x%016llx:%016llx)\n",
1135                                        i, rnames[i],
1136                                        (unsigned long long)chip->rsrc[i].start,
1137                                        (unsigned long long)chip->rsrc[i].end);
1138                                 err = -ENODEV;
1139                                 goto __error;
1140                         }
1141                         chip->requested |= (1 << i);
1142                 }
1143                 ctrl_addr = chip->rsrc[0].start;
1144                 txdma_addr = chip->rsrc[1].start;
1145                 rxdma_addr = txdma_addr + 0x100;
1146         } else {
1147                 static char *rnames[] = {
1148                         "Sound Control", "Sound Tx DMA", "Sound Rx DMA" };
1149                 for (i = 0; i < 3; i ++) {
1150                         if (of_address_to_resource(np, i,
1151                                                    &chip->rsrc[i])) {
1152                                 printk(KERN_ERR "snd: can't translate rsrc "
1153                                        " %d (%s)\n", i, rnames[i]);
1154                                 err = -ENODEV;
1155                                 goto __error;
1156                         }
1157                         if (request_mem_region(chip->rsrc[i].start,
1158                                                chip->rsrc[i].end -
1159                                                chip->rsrc[i].start + 1,
1160                                                rnames[i]) == NULL) {
1161                                 printk(KERN_ERR "snd: can't request rsrc "
1162                                        " %d (%s: 0x%016llx:%016llx)\n",
1163                                        i, rnames[i],
1164                                        (unsigned long long)chip->rsrc[i].start,
1165                                        (unsigned long long)chip->rsrc[i].end);
1166                                 err = -ENODEV;
1167                                 goto __error;
1168                         }
1169                         chip->requested |= (1 << i);
1170                 }
1171                 ctrl_addr = chip->rsrc[0].start;
1172                 txdma_addr = chip->rsrc[1].start;
1173                 rxdma_addr = chip->rsrc[2].start;
1174         }
1175
1176         chip->awacs = ioremap(ctrl_addr, 0x1000);
1177         chip->playback.dma = ioremap(txdma_addr, 0x100);
1178         chip->capture.dma = ioremap(rxdma_addr, 0x100);
1179         if (chip->model <= PMAC_BURGUNDY) {
1180                 irq = irq_of_parse_and_map(np, 0);
1181                 if (request_irq(irq, snd_pmac_ctrl_intr, 0,
1182                                 "PMac", (void*)chip)) {
1183                         snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n",
1184                                    irq);
1185                         err = -EBUSY;
1186                         goto __error;
1187                 }
1188                 chip->irq = irq;
1189         }
1190         irq = irq_of_parse_and_map(np, 1);
1191         if (request_irq(irq, snd_pmac_tx_intr, 0, "PMac Output", (void*)chip)){
1192                 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", irq);
1193                 err = -EBUSY;
1194                 goto __error;
1195         }
1196         chip->tx_irq = irq;
1197         irq = irq_of_parse_and_map(np, 2);
1198         if (request_irq(irq, snd_pmac_rx_intr, 0, "PMac Input", (void*)chip)) {
1199                 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", irq);
1200                 err = -EBUSY;
1201                 goto __error;
1202         }
1203         chip->rx_irq = irq;
1204
1205         snd_pmac_sound_feature(chip, 1);
1206
1207         /* reset */
1208         if (chip->model == PMAC_AWACS)
1209                 out_le32(&chip->awacs->control, 0x11);
1210
1211         /* Powerbooks have odd ways of enabling inputs such as
1212            an expansion-bay CD or sound from an internal modem
1213            or a PC-card modem. */
1214         if (chip->is_pbook_3400) {
1215                 /* Enable CD and PC-card sound inputs. */
1216                 /* This is done by reading from address
1217                  * f301a000, + 0x10 to enable the expansion-bay
1218                  * CD sound input, + 0x80 to enable the PC-card
1219                  * sound input.  The 0x100 enables the SCSI bus
1220                  * terminator power.
1221                  */
1222                 chip->latch_base = ioremap (0xf301a000, 0x1000);
1223                 in_8(chip->latch_base + 0x190);
1224         } else if (chip->is_pbook_G3) {
1225                 struct device_node* mio;
1226                 for (mio = chip->node->parent; mio; mio = mio->parent) {
1227                         if (strcmp(mio->name, "mac-io") == 0) {
1228                                 struct resource r;
1229                                 if (of_address_to_resource(mio, 0, &r) == 0)
1230                                         chip->macio_base =
1231                                                 ioremap(r.start, 0x40);
1232                                 break;
1233                         }
1234                 }
1235                 /* Enable CD sound input. */
1236                 /* The relevant bits for writing to this byte are 0x8f.
1237                  * I haven't found out what the 0x80 bit does.
1238                  * For the 0xf bits, writing 3 or 7 enables the CD
1239                  * input, any other value disables it.  Values
1240                  * 1, 3, 5, 7 enable the microphone.  Values 0, 2,
1241                  * 4, 6, 8 - f enable the input from the modem.
1242                  */
1243                 if (chip->macio_base)
1244                         out_8(chip->macio_base + 0x37, 3);
1245         }
1246
1247         /* Reset dbdma channels */
1248         snd_pmac_dbdma_reset(chip);
1249
1250         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
1251                 goto __error;
1252
1253         *chip_return = chip;
1254         return 0;
1255
1256  __error:
1257         snd_pmac_free(chip);
1258         return err;
1259 }
1260
1261
1262 /*
1263  * sleep notify for powerbook
1264  */
1265
1266 #ifdef CONFIG_PM
1267
1268 /*
1269  * Save state when going to sleep, restore it afterwards.
1270  */
1271
1272 void snd_pmac_suspend(struct snd_pmac *chip)
1273 {
1274         unsigned long flags;
1275
1276         snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
1277         if (chip->suspend)
1278                 chip->suspend(chip);
1279         snd_pcm_suspend_all(chip->pcm);
1280         spin_lock_irqsave(&chip->reg_lock, flags);
1281         snd_pmac_beep_stop(chip);
1282         spin_unlock_irqrestore(&chip->reg_lock, flags);
1283         if (chip->irq >= 0)
1284                 disable_irq(chip->irq);
1285         if (chip->tx_irq >= 0)
1286                 disable_irq(chip->tx_irq);
1287         if (chip->rx_irq >= 0)
1288                 disable_irq(chip->rx_irq);
1289         snd_pmac_sound_feature(chip, 0);
1290 }
1291
1292 void snd_pmac_resume(struct snd_pmac *chip)
1293 {
1294         snd_pmac_sound_feature(chip, 1);
1295         if (chip->resume)
1296                 chip->resume(chip);
1297         /* enable CD sound input */
1298         if (chip->macio_base && chip->is_pbook_G3)
1299                 out_8(chip->macio_base + 0x37, 3);
1300         else if (chip->is_pbook_3400)
1301                 in_8(chip->latch_base + 0x190);
1302
1303         snd_pmac_pcm_set_format(chip);
1304
1305         if (chip->irq >= 0)
1306                 enable_irq(chip->irq);
1307         if (chip->tx_irq >= 0)
1308                 enable_irq(chip->tx_irq);
1309         if (chip->rx_irq >= 0)
1310                 enable_irq(chip->rx_irq);
1311
1312         snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
1313 }
1314
1315 #endif /* CONFIG_PM */
1316