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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * PMac DBDMA 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/irq.h>
12#include <linux/init.h>
13#include <linux/delay.h>
14#include <linux/slab.h>
15#include <linux/interrupt.h>
16#include <linux/pci.h>
17#include <linux/dma-mapping.h>
18#include <linux/of_address.h>
19#include <linux/of_irq.h>
20#include <sound/core.h>
21#include "pmac.h"
22#include <sound/pcm_params.h>
23#include <asm/pmac_feature.h>
24
25
26/* fixed frequency table for awacs, screamer, burgundy, DACA (44100 max) */
27static const int awacs_freqs[8] = {
28 44100, 29400, 22050, 17640, 14700, 11025, 8820, 7350
29};
30/* fixed frequency table for tumbler */
31static const int tumbler_freqs[1] = {
32 44100
33};
34
35
36/*
37 * we will allocate a single 'emergency' dbdma cmd block to use if the
38 * tx status comes up "DEAD". This happens on some PowerComputing Pmac
39 * clones, either owing to a bug in dbdma or some interaction between
40 * IDE and sound. However, this measure would deal with DEAD status if
41 * it appeared elsewhere.
42 */
43static struct pmac_dbdma emergency_dbdma;
44static int emergency_in_use;
45
46
47/*
48 * allocate DBDMA command arrays
49 */
50static int snd_pmac_dbdma_alloc(struct snd_pmac *chip, struct pmac_dbdma *rec, int size)
51{
52 unsigned int rsize = sizeof(struct dbdma_cmd) * (size + 1);
53
54 rec->space = dma_alloc_coherent(&chip->pdev->dev, rsize,
55 &rec->dma_base, GFP_KERNEL);
56 if (rec->space == NULL)
57 return -ENOMEM;
58 rec->size = size;
59 memset(rec->space, 0, rsize);
60 rec->cmds = (void __iomem *)DBDMA_ALIGN(rec->space);
61 rec->addr = rec->dma_base + (unsigned long)((char *)rec->cmds - (char *)rec->space);
62
63 return 0;
64}
65
66static void snd_pmac_dbdma_free(struct snd_pmac *chip, struct pmac_dbdma *rec)
67{
68 if (rec->space) {
69 unsigned int rsize = sizeof(struct dbdma_cmd) * (rec->size + 1);
70
71 dma_free_coherent(&chip->pdev->dev, rsize, rec->space, rec->dma_base);
72 }
73}
74
75
76/*
77 * pcm stuff
78 */
79
80/*
81 * look up frequency table
82 */
83
84unsigned int snd_pmac_rate_index(struct snd_pmac *chip, struct pmac_stream *rec, unsigned int rate)
85{
86 int i, ok, found;
87
88 ok = rec->cur_freqs;
89 if (rate > chip->freq_table[0])
90 return 0;
91 found = 0;
92 for (i = 0; i < chip->num_freqs; i++, ok >>= 1) {
93 if (! (ok & 1)) continue;
94 found = i;
95 if (rate >= chip->freq_table[i])
96 break;
97 }
98 return found;
99}
100
101/*
102 * check whether another stream is active
103 */
104static inline int another_stream(int stream)
105{
106 return (stream == SNDRV_PCM_STREAM_PLAYBACK) ?
107 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
108}
109
110/*
111 * get a stream of the opposite direction
112 */
113static struct pmac_stream *snd_pmac_get_stream(struct snd_pmac *chip, int stream)
114{
115 switch (stream) {
116 case SNDRV_PCM_STREAM_PLAYBACK:
117 return &chip->playback;
118 case SNDRV_PCM_STREAM_CAPTURE:
119 return &chip->capture;
120 default:
121 snd_BUG();
122 return NULL;
123 }
124}
125
126/*
127 * wait while run status is on
128 */
129static inline void
130snd_pmac_wait_ack(struct pmac_stream *rec)
131{
132 int timeout = 50000;
133 while ((in_le32(&rec->dma->status) & RUN) && timeout-- > 0)
134 udelay(1);
135}
136
137/*
138 * set the format and rate to the chip.
139 * call the lowlevel function if defined (e.g. for AWACS).
140 */
141static void snd_pmac_pcm_set_format(struct snd_pmac *chip)
142{
143 /* set up frequency and format */
144 out_le32(&chip->awacs->control, chip->control_mask | (chip->rate_index << 8));
145 out_le32(&chip->awacs->byteswap, chip->format == SNDRV_PCM_FORMAT_S16_LE ? 1 : 0);
146 if (chip->set_format)
147 chip->set_format(chip);
148}
149
150/*
151 * stop the DMA transfer
152 */
153static inline void snd_pmac_dma_stop(struct pmac_stream *rec)
154{
155 out_le32(&rec->dma->control, (RUN|WAKE|FLUSH|PAUSE) << 16);
156 snd_pmac_wait_ack(rec);
157}
158
159/*
160 * set the command pointer address
161 */
162static inline void snd_pmac_dma_set_command(struct pmac_stream *rec, struct pmac_dbdma *cmd)
163{
164 out_le32(&rec->dma->cmdptr, cmd->addr);
165}
166
167/*
168 * start the DMA
169 */
170static inline void snd_pmac_dma_run(struct pmac_stream *rec, int status)
171{
172 out_le32(&rec->dma->control, status | (status << 16));
173}
174
175
176/*
177 * prepare playback/capture stream
178 */
179static int snd_pmac_pcm_prepare(struct snd_pmac *chip, struct pmac_stream *rec, struct snd_pcm_substream *subs)
180{
181 int i;
182 volatile struct dbdma_cmd __iomem *cp;
183 struct snd_pcm_runtime *runtime = subs->runtime;
184 int rate_index;
185 long offset;
186 struct pmac_stream *astr;
187
188 rec->dma_size = snd_pcm_lib_buffer_bytes(subs);
189 rec->period_size = snd_pcm_lib_period_bytes(subs);
190 rec->nperiods = rec->dma_size / rec->period_size;
191 rec->cur_period = 0;
192 rate_index = snd_pmac_rate_index(chip, rec, runtime->rate);
193
194 /* set up constraints */
195 astr = snd_pmac_get_stream(chip, another_stream(rec->stream));
196 if (! astr)
197 return -EINVAL;
198 astr->cur_freqs = 1 << rate_index;
199 astr->cur_formats = 1 << runtime->format;
200 chip->rate_index = rate_index;
201 chip->format = runtime->format;
202
203 /* We really want to execute a DMA stop command, after the AWACS
204 * is initialized.
205 * For reasons I don't understand, it stops the hissing noise
206 * common to many PowerBook G3 systems and random noise otherwise
207 * captured on iBook2's about every third time. -ReneR
208 */
209 spin_lock_irq(&chip->reg_lock);
210 snd_pmac_dma_stop(rec);
211 chip->extra_dma.cmds->command = cpu_to_le16(DBDMA_STOP);
212 snd_pmac_dma_set_command(rec, &chip->extra_dma);
213 snd_pmac_dma_run(rec, RUN);
214 spin_unlock_irq(&chip->reg_lock);
215 mdelay(5);
216 spin_lock_irq(&chip->reg_lock);
217 /* continuous DMA memory type doesn't provide the physical address,
218 * so we need to resolve the address here...
219 */
220 offset = runtime->dma_addr;
221 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) {
222 cp->phy_addr = cpu_to_le32(offset);
223 cp->req_count = cpu_to_le16(rec->period_size);
224 /*cp->res_count = cpu_to_le16(0);*/
225 cp->xfer_status = cpu_to_le16(0);
226 offset += rec->period_size;
227 }
228 /* make loop */
229 cp->command = cpu_to_le16(DBDMA_NOP | BR_ALWAYS);
230 cp->cmd_dep = cpu_to_le32(rec->cmd.addr);
231
232 snd_pmac_dma_stop(rec);
233 snd_pmac_dma_set_command(rec, &rec->cmd);
234 spin_unlock_irq(&chip->reg_lock);
235
236 return 0;
237}
238
239
240/*
241 * PCM trigger/stop
242 */
243static int snd_pmac_pcm_trigger(struct snd_pmac *chip, struct pmac_stream *rec,
244 struct snd_pcm_substream *subs, int cmd)
245{
246 volatile struct dbdma_cmd __iomem *cp;
247 int i, command;
248
249 switch (cmd) {
250 case SNDRV_PCM_TRIGGER_START:
251 case SNDRV_PCM_TRIGGER_RESUME:
252 if (rec->running)
253 return -EBUSY;
254 command = (subs->stream == SNDRV_PCM_STREAM_PLAYBACK ?
255 OUTPUT_MORE : INPUT_MORE) + INTR_ALWAYS;
256 spin_lock(&chip->reg_lock);
257 snd_pmac_beep_stop(chip);
258 snd_pmac_pcm_set_format(chip);
259 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++)
260 out_le16(&cp->command, command);
261 snd_pmac_dma_set_command(rec, &rec->cmd);
262 (void)in_le32(&rec->dma->status);
263 snd_pmac_dma_run(rec, RUN|WAKE);
264 rec->running = 1;
265 spin_unlock(&chip->reg_lock);
266 break;
267
268 case SNDRV_PCM_TRIGGER_STOP:
269 case SNDRV_PCM_TRIGGER_SUSPEND:
270 spin_lock(&chip->reg_lock);
271 rec->running = 0;
272 /*printk(KERN_DEBUG "stopped!!\n");*/
273 snd_pmac_dma_stop(rec);
274 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++)
275 out_le16(&cp->command, DBDMA_STOP);
276 spin_unlock(&chip->reg_lock);
277 break;
278
279 default:
280 return -EINVAL;
281 }
282
283 return 0;
284}
285
286/*
287 * return the current pointer
288 */
289inline
290static snd_pcm_uframes_t snd_pmac_pcm_pointer(struct snd_pmac *chip,
291 struct pmac_stream *rec,
292 struct snd_pcm_substream *subs)
293{
294 int count = 0;
295
296#if 1 /* hmm.. how can we get the current dma pointer?? */
297 int stat;
298 volatile struct dbdma_cmd __iomem *cp = &rec->cmd.cmds[rec->cur_period];
299 stat = le16_to_cpu(cp->xfer_status);
300 if (stat & (ACTIVE|DEAD)) {
301 count = in_le16(&cp->res_count);
302 if (count)
303 count = rec->period_size - count;
304 }
305#endif
306 count += rec->cur_period * rec->period_size;
307 /*printk(KERN_DEBUG "pointer=%d\n", count);*/
308 return bytes_to_frames(subs->runtime, count);
309}
310
311/*
312 * playback
313 */
314
315static int snd_pmac_playback_prepare(struct snd_pcm_substream *subs)
316{
317 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
318 return snd_pmac_pcm_prepare(chip, &chip->playback, subs);
319}
320
321static int snd_pmac_playback_trigger(struct snd_pcm_substream *subs,
322 int cmd)
323{
324 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
325 return snd_pmac_pcm_trigger(chip, &chip->playback, subs, cmd);
326}
327
328static snd_pcm_uframes_t snd_pmac_playback_pointer(struct snd_pcm_substream *subs)
329{
330 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
331 return snd_pmac_pcm_pointer(chip, &chip->playback, subs);
332}
333
334
335/*
336 * capture
337 */
338
339static int snd_pmac_capture_prepare(struct snd_pcm_substream *subs)
340{
341 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
342 return snd_pmac_pcm_prepare(chip, &chip->capture, subs);
343}
344
345static int snd_pmac_capture_trigger(struct snd_pcm_substream *subs,
346 int cmd)
347{
348 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
349 return snd_pmac_pcm_trigger(chip, &chip->capture, subs, cmd);
350}
351
352static snd_pcm_uframes_t snd_pmac_capture_pointer(struct snd_pcm_substream *subs)
353{
354 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
355 return snd_pmac_pcm_pointer(chip, &chip->capture, subs);
356}
357
358
359/*
360 * Handle DEAD DMA transfers:
361 * if the TX status comes up "DEAD" - reported on some Power Computing machines
362 * we need to re-start the dbdma - but from a different physical start address
363 * and with a different transfer length. It would get very messy to do this
364 * with the normal dbdma_cmd blocks - we would have to re-write the buffer start
365 * addresses each time. So, we will keep a single dbdma_cmd block which can be
366 * fiddled with.
367 * When DEAD status is first reported the content of the faulted dbdma block is
368 * copied into the emergency buffer and we note that the buffer is in use.
369 * we then bump the start physical address by the amount that was successfully
370 * output before it died.
371 * On any subsequent DEAD result we just do the bump-ups (we know that we are
372 * already using the emergency dbdma_cmd).
373 * CHECK: this just tries to "do it". It is possible that we should abandon
374 * xfers when the number of residual bytes gets below a certain value - I can
375 * see that this might cause a loop-forever if a too small transfer causes
376 * DEAD status. However this is a TODO for now - we'll see what gets reported.
377 * When we get a successful transfer result with the emergency buffer we just
378 * pretend that it completed using the original dmdma_cmd and carry on. The
379 * 'next_cmd' field will already point back to the original loop of blocks.
380 */
381static inline void snd_pmac_pcm_dead_xfer(struct pmac_stream *rec,
382 volatile struct dbdma_cmd __iomem *cp)
383{
384 unsigned short req, res ;
385 unsigned int phy ;
386
387 /* printk(KERN_WARNING "snd-powermac: DMA died - patching it up!\n"); */
388
389 /* to clear DEAD status we must first clear RUN
390 set it to quiescent to be on the safe side */
391 (void)in_le32(&rec->dma->status);
392 out_le32(&rec->dma->control, (RUN|PAUSE|FLUSH|WAKE) << 16);
393
394 if (!emergency_in_use) { /* new problem */
395 memcpy((void *)emergency_dbdma.cmds, (void *)cp,
396 sizeof(struct dbdma_cmd));
397 emergency_in_use = 1;
398 cp->xfer_status = cpu_to_le16(0);
399 cp->req_count = cpu_to_le16(rec->period_size);
400 cp = emergency_dbdma.cmds;
401 }
402
403 /* now bump the values to reflect the amount
404 we haven't yet shifted */
405 req = le16_to_cpu(cp->req_count);
406 res = le16_to_cpu(cp->res_count);
407 phy = le32_to_cpu(cp->phy_addr);
408 phy += (req - res);
409 cp->req_count = cpu_to_le16(res);
410 cp->res_count = cpu_to_le16(0);
411 cp->xfer_status = cpu_to_le16(0);
412 cp->phy_addr = cpu_to_le32(phy);
413
414 cp->cmd_dep = cpu_to_le32(rec->cmd.addr
415 + sizeof(struct dbdma_cmd)*((rec->cur_period+1)%rec->nperiods));
416
417 cp->command = cpu_to_le16(OUTPUT_MORE | BR_ALWAYS | INTR_ALWAYS);
418
419 /* point at our patched up command block */
420 out_le32(&rec->dma->cmdptr, emergency_dbdma.addr);
421
422 /* we must re-start the controller */
423 (void)in_le32(&rec->dma->status);
424 /* should complete clearing the DEAD status */
425 out_le32(&rec->dma->control, ((RUN|WAKE) << 16) + (RUN|WAKE));
426}
427
428/*
429 * update playback/capture pointer from interrupts
430 */
431static void snd_pmac_pcm_update(struct snd_pmac *chip, struct pmac_stream *rec)
432{
433 volatile struct dbdma_cmd __iomem *cp;
434 int c;
435 int stat;
436
437 spin_lock(&chip->reg_lock);
438 if (rec->running) {
439 for (c = 0; c < rec->nperiods; c++) { /* at most all fragments */
440
441 if (emergency_in_use) /* already using DEAD xfer? */
442 cp = emergency_dbdma.cmds;
443 else
444 cp = &rec->cmd.cmds[rec->cur_period];
445
446 stat = le16_to_cpu(cp->xfer_status);
447
448 if (stat & DEAD) {
449 snd_pmac_pcm_dead_xfer(rec, cp);
450 break; /* this block is still going */
451 }
452
453 if (emergency_in_use)
454 emergency_in_use = 0 ; /* done that */
455
456 if (! (stat & ACTIVE))
457 break;
458
459 /*printk(KERN_DEBUG "update frag %d\n", rec->cur_period);*/
460 cp->xfer_status = cpu_to_le16(0);
461 cp->req_count = cpu_to_le16(rec->period_size);
462 /*cp->res_count = cpu_to_le16(0);*/
463 rec->cur_period++;
464 if (rec->cur_period >= rec->nperiods) {
465 rec->cur_period = 0;
466 }
467
468 spin_unlock(&chip->reg_lock);
469 snd_pcm_period_elapsed(rec->substream);
470 spin_lock(&chip->reg_lock);
471 }
472 }
473 spin_unlock(&chip->reg_lock);
474}
475
476
477/*
478 * hw info
479 */
480
481static const struct snd_pcm_hardware snd_pmac_playback =
482{
483 .info = (SNDRV_PCM_INFO_INTERLEAVED |
484 SNDRV_PCM_INFO_MMAP |
485 SNDRV_PCM_INFO_MMAP_VALID |
486 SNDRV_PCM_INFO_RESUME),
487 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE,
488 .rates = SNDRV_PCM_RATE_8000_44100,
489 .rate_min = 7350,
490 .rate_max = 44100,
491 .channels_min = 2,
492 .channels_max = 2,
493 .buffer_bytes_max = 131072,
494 .period_bytes_min = 256,
495 .period_bytes_max = 16384,
496 .periods_min = 3,
497 .periods_max = PMAC_MAX_FRAGS,
498};
499
500static const struct snd_pcm_hardware snd_pmac_capture =
501{
502 .info = (SNDRV_PCM_INFO_INTERLEAVED |
503 SNDRV_PCM_INFO_MMAP |
504 SNDRV_PCM_INFO_MMAP_VALID |
505 SNDRV_PCM_INFO_RESUME),
506 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE,
507 .rates = SNDRV_PCM_RATE_8000_44100,
508 .rate_min = 7350,
509 .rate_max = 44100,
510 .channels_min = 2,
511 .channels_max = 2,
512 .buffer_bytes_max = 131072,
513 .period_bytes_min = 256,
514 .period_bytes_max = 16384,
515 .periods_min = 3,
516 .periods_max = PMAC_MAX_FRAGS,
517};
518
519
520#if 0 // NYI
521static int snd_pmac_hw_rule_rate(struct snd_pcm_hw_params *params,
522 struct snd_pcm_hw_rule *rule)
523{
524 struct snd_pmac *chip = rule->private;
525 struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]);
526 int i, freq_table[8], num_freqs;
527
528 if (! rec)
529 return -EINVAL;
530 num_freqs = 0;
531 for (i = chip->num_freqs - 1; i >= 0; i--) {
532 if (rec->cur_freqs & (1 << i))
533 freq_table[num_freqs++] = chip->freq_table[i];
534 }
535
536 return snd_interval_list(hw_param_interval(params, rule->var),
537 num_freqs, freq_table, 0);
538}
539
540static int snd_pmac_hw_rule_format(struct snd_pcm_hw_params *params,
541 struct snd_pcm_hw_rule *rule)
542{
543 struct snd_pmac *chip = rule->private;
544 struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]);
545
546 if (! rec)
547 return -EINVAL;
548 return snd_mask_refine_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT),
549 rec->cur_formats);
550}
551#endif // NYI
552
553static int snd_pmac_pcm_open(struct snd_pmac *chip, struct pmac_stream *rec,
554 struct snd_pcm_substream *subs)
555{
556 struct snd_pcm_runtime *runtime = subs->runtime;
557 int i;
558
559 /* look up frequency table and fill bit mask */
560 runtime->hw.rates = 0;
561 for (i = 0; i < chip->num_freqs; i++)
562 if (chip->freqs_ok & (1 << i))
563 runtime->hw.rates |=
564 snd_pcm_rate_to_rate_bit(chip->freq_table[i]);
565
566 /* check for minimum and maximum rates */
567 for (i = 0; i < chip->num_freqs; i++) {
568 if (chip->freqs_ok & (1 << i)) {
569 runtime->hw.rate_max = chip->freq_table[i];
570 break;
571 }
572 }
573 for (i = chip->num_freqs - 1; i >= 0; i--) {
574 if (chip->freqs_ok & (1 << i)) {
575 runtime->hw.rate_min = chip->freq_table[i];
576 break;
577 }
578 }
579 runtime->hw.formats = chip->formats_ok;
580 if (chip->can_capture) {
581 if (! chip->can_duplex)
582 runtime->hw.info |= SNDRV_PCM_INFO_HALF_DUPLEX;
583 runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
584 }
585 runtime->private_data = rec;
586 rec->substream = subs;
587
588#if 0 /* FIXME: still under development.. */
589 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
590 snd_pmac_hw_rule_rate, chip, rec->stream, -1);
591 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT,
592 snd_pmac_hw_rule_format, chip, rec->stream, -1);
593#endif
594
595 runtime->hw.periods_max = rec->cmd.size - 1;
596
597 /* constraints to fix choppy sound */
598 snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
599 return 0;
600}
601
602static int snd_pmac_pcm_close(struct snd_pmac *chip, struct pmac_stream *rec,
603 struct snd_pcm_substream *subs)
604{
605 struct pmac_stream *astr;
606
607 snd_pmac_dma_stop(rec);
608
609 astr = snd_pmac_get_stream(chip, another_stream(rec->stream));
610 if (! astr)
611 return -EINVAL;
612
613 /* reset constraints */
614 astr->cur_freqs = chip->freqs_ok;
615 astr->cur_formats = chip->formats_ok;
616
617 return 0;
618}
619
620static int snd_pmac_playback_open(struct snd_pcm_substream *subs)
621{
622 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
623
624 subs->runtime->hw = snd_pmac_playback;
625 return snd_pmac_pcm_open(chip, &chip->playback, subs);
626}
627
628static int snd_pmac_capture_open(struct snd_pcm_substream *subs)
629{
630 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
631
632 subs->runtime->hw = snd_pmac_capture;
633 return snd_pmac_pcm_open(chip, &chip->capture, subs);
634}
635
636static int snd_pmac_playback_close(struct snd_pcm_substream *subs)
637{
638 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
639
640 return snd_pmac_pcm_close(chip, &chip->playback, subs);
641}
642
643static int snd_pmac_capture_close(struct snd_pcm_substream *subs)
644{
645 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
646
647 return snd_pmac_pcm_close(chip, &chip->capture, subs);
648}
649
650/*
651 */
652
653static const struct snd_pcm_ops snd_pmac_playback_ops = {
654 .open = snd_pmac_playback_open,
655 .close = snd_pmac_playback_close,
656 .prepare = snd_pmac_playback_prepare,
657 .trigger = snd_pmac_playback_trigger,
658 .pointer = snd_pmac_playback_pointer,
659};
660
661static const struct snd_pcm_ops snd_pmac_capture_ops = {
662 .open = snd_pmac_capture_open,
663 .close = snd_pmac_capture_close,
664 .prepare = snd_pmac_capture_prepare,
665 .trigger = snd_pmac_capture_trigger,
666 .pointer = snd_pmac_capture_pointer,
667};
668
669int snd_pmac_pcm_new(struct snd_pmac *chip)
670{
671 struct snd_pcm *pcm;
672 int err;
673 int num_captures = 1;
674
675 if (! chip->can_capture)
676 num_captures = 0;
677 err = snd_pcm_new(chip->card, chip->card->driver, 0, 1, num_captures, &pcm);
678 if (err < 0)
679 return err;
680
681 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_pmac_playback_ops);
682 if (chip->can_capture)
683 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_pmac_capture_ops);
684
685 pcm->private_data = chip;
686 pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
687 strcpy(pcm->name, chip->card->shortname);
688 chip->pcm = pcm;
689
690 chip->formats_ok = SNDRV_PCM_FMTBIT_S16_BE;
691 if (chip->can_byte_swap)
692 chip->formats_ok |= SNDRV_PCM_FMTBIT_S16_LE;
693
694 chip->playback.cur_formats = chip->formats_ok;
695 chip->capture.cur_formats = chip->formats_ok;
696 chip->playback.cur_freqs = chip->freqs_ok;
697 chip->capture.cur_freqs = chip->freqs_ok;
698
699 /* preallocate 64k buffer */
700 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
701 &chip->pdev->dev,
702 64 * 1024, 64 * 1024);
703
704 return 0;
705}
706
707
708static void snd_pmac_dbdma_reset(struct snd_pmac *chip)
709{
710 out_le32(&chip->playback.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
711 snd_pmac_wait_ack(&chip->playback);
712 out_le32(&chip->capture.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
713 snd_pmac_wait_ack(&chip->capture);
714}
715
716
717/*
718 * handling beep
719 */
720void snd_pmac_beep_dma_start(struct snd_pmac *chip, int bytes, unsigned long addr, int speed)
721{
722 struct pmac_stream *rec = &chip->playback;
723
724 snd_pmac_dma_stop(rec);
725 chip->extra_dma.cmds->req_count = cpu_to_le16(bytes);
726 chip->extra_dma.cmds->xfer_status = cpu_to_le16(0);
727 chip->extra_dma.cmds->cmd_dep = cpu_to_le32(chip->extra_dma.addr);
728 chip->extra_dma.cmds->phy_addr = cpu_to_le32(addr);
729 chip->extra_dma.cmds->command = cpu_to_le16(OUTPUT_MORE | BR_ALWAYS);
730 out_le32(&chip->awacs->control,
731 (in_le32(&chip->awacs->control) & ~0x1f00)
732 | (speed << 8));
733 out_le32(&chip->awacs->byteswap, 0);
734 snd_pmac_dma_set_command(rec, &chip->extra_dma);
735 snd_pmac_dma_run(rec, RUN);
736}
737
738void snd_pmac_beep_dma_stop(struct snd_pmac *chip)
739{
740 snd_pmac_dma_stop(&chip->playback);
741 chip->extra_dma.cmds->command = cpu_to_le16(DBDMA_STOP);
742 snd_pmac_pcm_set_format(chip); /* reset format */
743}
744
745
746/*
747 * interrupt handlers
748 */
749static irqreturn_t
750snd_pmac_tx_intr(int irq, void *devid)
751{
752 struct snd_pmac *chip = devid;
753 snd_pmac_pcm_update(chip, &chip->playback);
754 return IRQ_HANDLED;
755}
756
757
758static irqreturn_t
759snd_pmac_rx_intr(int irq, void *devid)
760{
761 struct snd_pmac *chip = devid;
762 snd_pmac_pcm_update(chip, &chip->capture);
763 return IRQ_HANDLED;
764}
765
766
767static irqreturn_t
768snd_pmac_ctrl_intr(int irq, void *devid)
769{
770 struct snd_pmac *chip = devid;
771 int ctrl = in_le32(&chip->awacs->control);
772
773 /*printk(KERN_DEBUG "pmac: control interrupt.. 0x%x\n", ctrl);*/
774 if (ctrl & MASK_PORTCHG) {
775 /* do something when headphone is plugged/unplugged? */
776 if (chip->update_automute)
777 chip->update_automute(chip, 1);
778 }
779 if (ctrl & MASK_CNTLERR) {
780 int err = (in_le32(&chip->awacs->codec_stat) & MASK_ERRCODE) >> 16;
781 if (err && chip->model <= PMAC_SCREAMER)
782 snd_printk(KERN_DEBUG "error %x\n", err);
783 }
784 /* Writing 1s to the CNTLERR and PORTCHG bits clears them... */
785 out_le32(&chip->awacs->control, ctrl);
786 return IRQ_HANDLED;
787}
788
789
790/*
791 * a wrapper to feature call for compatibility
792 */
793static void snd_pmac_sound_feature(struct snd_pmac *chip, int enable)
794{
795 if (ppc_md.feature_call)
796 ppc_md.feature_call(PMAC_FTR_SOUND_CHIP_ENABLE, chip->node, 0, enable);
797}
798
799/*
800 * release resources
801 */
802
803static int snd_pmac_free(struct snd_pmac *chip)
804{
805 /* stop sounds */
806 if (chip->initialized) {
807 snd_pmac_dbdma_reset(chip);
808 /* disable interrupts from awacs interface */
809 out_le32(&chip->awacs->control, in_le32(&chip->awacs->control) & 0xfff);
810 }
811
812 if (chip->node)
813 snd_pmac_sound_feature(chip, 0);
814
815 /* clean up mixer if any */
816 if (chip->mixer_free)
817 chip->mixer_free(chip);
818
819 snd_pmac_detach_beep(chip);
820
821 /* release resources */
822 if (chip->irq >= 0)
823 free_irq(chip->irq, (void*)chip);
824 if (chip->tx_irq >= 0)
825 free_irq(chip->tx_irq, (void*)chip);
826 if (chip->rx_irq >= 0)
827 free_irq(chip->rx_irq, (void*)chip);
828 snd_pmac_dbdma_free(chip, &chip->playback.cmd);
829 snd_pmac_dbdma_free(chip, &chip->capture.cmd);
830 snd_pmac_dbdma_free(chip, &chip->extra_dma);
831 snd_pmac_dbdma_free(chip, &emergency_dbdma);
832 iounmap(chip->macio_base);
833 iounmap(chip->latch_base);
834 iounmap(chip->awacs);
835 iounmap(chip->playback.dma);
836 iounmap(chip->capture.dma);
837
838 if (chip->node) {
839 int i;
840 for (i = 0; i < 3; i++) {
841 if (chip->requested & (1 << i))
842 release_mem_region(chip->rsrc[i].start,
843 resource_size(&chip->rsrc[i]));
844 }
845 }
846
847 pci_dev_put(chip->pdev);
848 of_node_put(chip->node);
849 kfree(chip);
850 return 0;
851}
852
853
854/*
855 * free the device
856 */
857static int snd_pmac_dev_free(struct snd_device *device)
858{
859 struct snd_pmac *chip = device->device_data;
860 return snd_pmac_free(chip);
861}
862
863
864/*
865 * check the machine support byteswap (little-endian)
866 */
867
868static void detect_byte_swap(struct snd_pmac *chip)
869{
870 struct device_node *mio;
871
872 /* if seems that Keylargo can't byte-swap */
873 for (mio = chip->node->parent; mio; mio = mio->parent) {
874 if (of_node_name_eq(mio, "mac-io")) {
875 if (of_device_is_compatible(mio, "Keylargo"))
876 chip->can_byte_swap = 0;
877 break;
878 }
879 }
880
881 /* it seems the Pismo & iBook can't byte-swap in hardware. */
882 if (of_machine_is_compatible("PowerBook3,1") ||
883 of_machine_is_compatible("PowerBook2,1"))
884 chip->can_byte_swap = 0 ;
885
886 if (of_machine_is_compatible("PowerBook2,1"))
887 chip->can_duplex = 0;
888}
889
890
891/*
892 * detect a sound chip
893 */
894static int snd_pmac_detect(struct snd_pmac *chip)
895{
896 struct device_node *sound;
897 struct device_node *dn;
898 const unsigned int *prop;
899 unsigned int l;
900 struct macio_chip* macio;
901
902 if (!machine_is(powermac))
903 return -ENODEV;
904
905 chip->subframe = 0;
906 chip->revision = 0;
907 chip->freqs_ok = 0xff; /* all ok */
908 chip->model = PMAC_AWACS;
909 chip->can_byte_swap = 1;
910 chip->can_duplex = 1;
911 chip->can_capture = 1;
912 chip->num_freqs = ARRAY_SIZE(awacs_freqs);
913 chip->freq_table = awacs_freqs;
914 chip->pdev = NULL;
915
916 chip->control_mask = MASK_IEPC | MASK_IEE | 0x11; /* default */
917
918 /* check machine type */
919 if (of_machine_is_compatible("AAPL,3400/2400")
920 || of_machine_is_compatible("AAPL,3500"))
921 chip->is_pbook_3400 = 1;
922 else if (of_machine_is_compatible("PowerBook1,1")
923 || of_machine_is_compatible("AAPL,PowerBook1998"))
924 chip->is_pbook_G3 = 1;
925 chip->node = of_find_node_by_name(NULL, "awacs");
926 sound = of_node_get(chip->node);
927
928 /*
929 * powermac G3 models have a node called "davbus"
930 * with a child called "sound".
931 */
932 if (!chip->node)
933 chip->node = of_find_node_by_name(NULL, "davbus");
934 /*
935 * if we didn't find a davbus device, try 'i2s-a' since
936 * this seems to be what iBooks have
937 */
938 if (! chip->node) {
939 chip->node = of_find_node_by_name(NULL, "i2s-a");
940 if (chip->node && chip->node->parent &&
941 chip->node->parent->parent) {
942 if (of_device_is_compatible(chip->node->parent->parent,
943 "K2-Keylargo"))
944 chip->is_k2 = 1;
945 }
946 }
947 if (! chip->node)
948 return -ENODEV;
949
950 if (!sound) {
951 for_each_node_by_name(sound, "sound")
952 if (sound->parent == chip->node)
953 break;
954 }
955 if (! sound) {
956 of_node_put(chip->node);
957 chip->node = NULL;
958 return -ENODEV;
959 }
960 prop = of_get_property(sound, "sub-frame", NULL);
961 if (prop && *prop < 16)
962 chip->subframe = *prop;
963 prop = of_get_property(sound, "layout-id", NULL);
964 if (prop) {
965 /* partly deprecate snd-powermac, for those machines
966 * that have a layout-id property for now */
967 printk(KERN_INFO "snd-powermac no longer handles any "
968 "machines with a layout-id property "
969 "in the device-tree, use snd-aoa.\n");
970 of_node_put(sound);
971 of_node_put(chip->node);
972 chip->node = NULL;
973 return -ENODEV;
974 }
975 /* This should be verified on older screamers */
976 if (of_device_is_compatible(sound, "screamer")) {
977 chip->model = PMAC_SCREAMER;
978 // chip->can_byte_swap = 0; /* FIXME: check this */
979 }
980 if (of_device_is_compatible(sound, "burgundy")) {
981 chip->model = PMAC_BURGUNDY;
982 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
983 }
984 if (of_device_is_compatible(sound, "daca")) {
985 chip->model = PMAC_DACA;
986 chip->can_capture = 0; /* no capture */
987 chip->can_duplex = 0;
988 // chip->can_byte_swap = 0; /* FIXME: check this */
989 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
990 }
991 if (of_device_is_compatible(sound, "tumbler")) {
992 chip->model = PMAC_TUMBLER;
993 chip->can_capture = of_machine_is_compatible("PowerMac4,2")
994 || of_machine_is_compatible("PowerBook3,2")
995 || of_machine_is_compatible("PowerBook3,3")
996 || of_machine_is_compatible("PowerBook4,1")
997 || of_machine_is_compatible("PowerBook4,2")
998 || of_machine_is_compatible("PowerBook4,3");
999 chip->can_duplex = 0;
1000 // chip->can_byte_swap = 0; /* FIXME: check this */
1001 chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
1002 chip->freq_table = tumbler_freqs;
1003 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
1004 }
1005 if (of_device_is_compatible(sound, "snapper")) {
1006 chip->model = PMAC_SNAPPER;
1007 // chip->can_byte_swap = 0; /* FIXME: check this */
1008 chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
1009 chip->freq_table = tumbler_freqs;
1010 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
1011 }
1012 prop = of_get_property(sound, "device-id", NULL);
1013 if (prop)
1014 chip->device_id = *prop;
1015 dn = of_find_node_by_name(NULL, "perch");
1016 chip->has_iic = (dn != NULL);
1017 of_node_put(dn);
1018
1019 /* We need the PCI device for DMA allocations, let's use a crude method
1020 * for now ...
1021 */
1022 macio = macio_find(chip->node, macio_unknown);
1023 if (macio == NULL)
1024 printk(KERN_WARNING "snd-powermac: can't locate macio !\n");
1025 else {
1026 struct pci_dev *pdev = NULL;
1027
1028 for_each_pci_dev(pdev) {
1029 struct device_node *np = pci_device_to_OF_node(pdev);
1030 if (np && np == macio->of_node) {
1031 chip->pdev = pdev;
1032 break;
1033 }
1034 }
1035 }
1036 if (chip->pdev == NULL)
1037 printk(KERN_WARNING "snd-powermac: can't locate macio PCI"
1038 " device !\n");
1039
1040 detect_byte_swap(chip);
1041
1042 /* look for a property saying what sample rates
1043 are available */
1044 prop = of_get_property(sound, "sample-rates", &l);
1045 if (! prop)
1046 prop = of_get_property(sound, "output-frame-rates", &l);
1047 if (prop) {
1048 int i;
1049 chip->freqs_ok = 0;
1050 for (l /= sizeof(int); l > 0; --l) {
1051 unsigned int r = *prop++;
1052 /* Apple 'Fixed' format */
1053 if (r >= 0x10000)
1054 r >>= 16;
1055 for (i = 0; i < chip->num_freqs; ++i) {
1056 if (r == chip->freq_table[i]) {
1057 chip->freqs_ok |= (1 << i);
1058 break;
1059 }
1060 }
1061 }
1062 } else {
1063 /* assume only 44.1khz */
1064 chip->freqs_ok = 1;
1065 }
1066
1067 of_node_put(sound);
1068 return 0;
1069}
1070
1071#ifdef PMAC_SUPPORT_AUTOMUTE
1072/*
1073 * auto-mute
1074 */
1075static int pmac_auto_mute_get(struct snd_kcontrol *kcontrol,
1076 struct snd_ctl_elem_value *ucontrol)
1077{
1078 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1079 ucontrol->value.integer.value[0] = chip->auto_mute;
1080 return 0;
1081}
1082
1083static int pmac_auto_mute_put(struct snd_kcontrol *kcontrol,
1084 struct snd_ctl_elem_value *ucontrol)
1085{
1086 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1087 if (ucontrol->value.integer.value[0] != chip->auto_mute) {
1088 chip->auto_mute = !!ucontrol->value.integer.value[0];
1089 if (chip->update_automute)
1090 chip->update_automute(chip, 1);
1091 return 1;
1092 }
1093 return 0;
1094}
1095
1096static int pmac_hp_detect_get(struct snd_kcontrol *kcontrol,
1097 struct snd_ctl_elem_value *ucontrol)
1098{
1099 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1100 if (chip->detect_headphone)
1101 ucontrol->value.integer.value[0] = chip->detect_headphone(chip);
1102 else
1103 ucontrol->value.integer.value[0] = 0;
1104 return 0;
1105}
1106
1107static const struct snd_kcontrol_new auto_mute_controls[] = {
1108 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1109 .name = "Auto Mute Switch",
1110 .info = snd_pmac_boolean_mono_info,
1111 .get = pmac_auto_mute_get,
1112 .put = pmac_auto_mute_put,
1113 },
1114 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1115 .name = "Headphone Detection",
1116 .access = SNDRV_CTL_ELEM_ACCESS_READ,
1117 .info = snd_pmac_boolean_mono_info,
1118 .get = pmac_hp_detect_get,
1119 },
1120};
1121
1122int snd_pmac_add_automute(struct snd_pmac *chip)
1123{
1124 int err;
1125 chip->auto_mute = 1;
1126 err = snd_ctl_add(chip->card, snd_ctl_new1(&auto_mute_controls[0], chip));
1127 if (err < 0) {
1128 printk(KERN_ERR "snd-powermac: Failed to add automute control\n");
1129 return err;
1130 }
1131 chip->hp_detect_ctl = snd_ctl_new1(&auto_mute_controls[1], chip);
1132 return snd_ctl_add(chip->card, chip->hp_detect_ctl);
1133}
1134#endif /* PMAC_SUPPORT_AUTOMUTE */
1135
1136/*
1137 * create and detect a pmac chip record
1138 */
1139int snd_pmac_new(struct snd_card *card, struct snd_pmac **chip_return)
1140{
1141 struct snd_pmac *chip;
1142 struct device_node *np;
1143 int i, err;
1144 unsigned int irq;
1145 unsigned long ctrl_addr, txdma_addr, rxdma_addr;
1146 static const struct snd_device_ops ops = {
1147 .dev_free = snd_pmac_dev_free,
1148 };
1149
1150 *chip_return = NULL;
1151
1152 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1153 if (chip == NULL)
1154 return -ENOMEM;
1155 chip->card = card;
1156
1157 spin_lock_init(&chip->reg_lock);
1158 chip->irq = chip->tx_irq = chip->rx_irq = -1;
1159
1160 chip->playback.stream = SNDRV_PCM_STREAM_PLAYBACK;
1161 chip->capture.stream = SNDRV_PCM_STREAM_CAPTURE;
1162
1163 err = snd_pmac_detect(chip);
1164 if (err < 0)
1165 goto __error;
1166
1167 if (snd_pmac_dbdma_alloc(chip, &chip->playback.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
1168 snd_pmac_dbdma_alloc(chip, &chip->capture.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
1169 snd_pmac_dbdma_alloc(chip, &chip->extra_dma, 2) < 0 ||
1170 snd_pmac_dbdma_alloc(chip, &emergency_dbdma, 2) < 0) {
1171 err = -ENOMEM;
1172 goto __error;
1173 }
1174
1175 np = chip->node;
1176 chip->requested = 0;
1177 if (chip->is_k2) {
1178 static const char * const rnames[] = {
1179 "Sound Control", "Sound DMA" };
1180 for (i = 0; i < 2; i ++) {
1181 if (of_address_to_resource(np->parent, i,
1182 &chip->rsrc[i])) {
1183 printk(KERN_ERR "snd: can't translate rsrc "
1184 " %d (%s)\n", i, rnames[i]);
1185 err = -ENODEV;
1186 goto __error;
1187 }
1188 if (request_mem_region(chip->rsrc[i].start,
1189 resource_size(&chip->rsrc[i]),
1190 rnames[i]) == NULL) {
1191 printk(KERN_ERR "snd: can't request rsrc "
1192 " %d (%s: %pR)\n",
1193 i, rnames[i], &chip->rsrc[i]);
1194 err = -ENODEV;
1195 goto __error;
1196 }
1197 chip->requested |= (1 << i);
1198 }
1199 ctrl_addr = chip->rsrc[0].start;
1200 txdma_addr = chip->rsrc[1].start;
1201 rxdma_addr = txdma_addr + 0x100;
1202 } else {
1203 static const char * const rnames[] = {
1204 "Sound Control", "Sound Tx DMA", "Sound Rx DMA" };
1205 for (i = 0; i < 3; i ++) {
1206 if (of_address_to_resource(np, i,
1207 &chip->rsrc[i])) {
1208 printk(KERN_ERR "snd: can't translate rsrc "
1209 " %d (%s)\n", i, rnames[i]);
1210 err = -ENODEV;
1211 goto __error;
1212 }
1213 if (request_mem_region(chip->rsrc[i].start,
1214 resource_size(&chip->rsrc[i]),
1215 rnames[i]) == NULL) {
1216 printk(KERN_ERR "snd: can't request rsrc "
1217 " %d (%s: %pR)\n",
1218 i, rnames[i], &chip->rsrc[i]);
1219 err = -ENODEV;
1220 goto __error;
1221 }
1222 chip->requested |= (1 << i);
1223 }
1224 ctrl_addr = chip->rsrc[0].start;
1225 txdma_addr = chip->rsrc[1].start;
1226 rxdma_addr = chip->rsrc[2].start;
1227 }
1228
1229 chip->awacs = ioremap(ctrl_addr, 0x1000);
1230 chip->playback.dma = ioremap(txdma_addr, 0x100);
1231 chip->capture.dma = ioremap(rxdma_addr, 0x100);
1232 if (chip->model <= PMAC_BURGUNDY) {
1233 irq = irq_of_parse_and_map(np, 0);
1234 if (request_irq(irq, snd_pmac_ctrl_intr, 0,
1235 "PMac", (void*)chip)) {
1236 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n",
1237 irq);
1238 err = -EBUSY;
1239 goto __error;
1240 }
1241 chip->irq = irq;
1242 }
1243 irq = irq_of_parse_and_map(np, 1);
1244 if (request_irq(irq, snd_pmac_tx_intr, 0, "PMac Output", (void*)chip)){
1245 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", irq);
1246 err = -EBUSY;
1247 goto __error;
1248 }
1249 chip->tx_irq = irq;
1250 irq = irq_of_parse_and_map(np, 2);
1251 if (request_irq(irq, snd_pmac_rx_intr, 0, "PMac Input", (void*)chip)) {
1252 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", irq);
1253 err = -EBUSY;
1254 goto __error;
1255 }
1256 chip->rx_irq = irq;
1257
1258 snd_pmac_sound_feature(chip, 1);
1259
1260 /* reset & enable interrupts */
1261 if (chip->model <= PMAC_BURGUNDY)
1262 out_le32(&chip->awacs->control, chip->control_mask);
1263
1264 /* Powerbooks have odd ways of enabling inputs such as
1265 an expansion-bay CD or sound from an internal modem
1266 or a PC-card modem. */
1267 if (chip->is_pbook_3400) {
1268 /* Enable CD and PC-card sound inputs. */
1269 /* This is done by reading from address
1270 * f301a000, + 0x10 to enable the expansion-bay
1271 * CD sound input, + 0x80 to enable the PC-card
1272 * sound input. The 0x100 enables the SCSI bus
1273 * terminator power.
1274 */
1275 chip->latch_base = ioremap (0xf301a000, 0x1000);
1276 in_8(chip->latch_base + 0x190);
1277 } else if (chip->is_pbook_G3) {
1278 struct device_node* mio;
1279 for (mio = chip->node->parent; mio; mio = mio->parent) {
1280 if (of_node_name_eq(mio, "mac-io")) {
1281 struct resource r;
1282 if (of_address_to_resource(mio, 0, &r) == 0)
1283 chip->macio_base =
1284 ioremap(r.start, 0x40);
1285 break;
1286 }
1287 }
1288 /* Enable CD sound input. */
1289 /* The relevant bits for writing to this byte are 0x8f.
1290 * I haven't found out what the 0x80 bit does.
1291 * For the 0xf bits, writing 3 or 7 enables the CD
1292 * input, any other value disables it. Values
1293 * 1, 3, 5, 7 enable the microphone. Values 0, 2,
1294 * 4, 6, 8 - f enable the input from the modem.
1295 */
1296 if (chip->macio_base)
1297 out_8(chip->macio_base + 0x37, 3);
1298 }
1299
1300 /* Reset dbdma channels */
1301 snd_pmac_dbdma_reset(chip);
1302
1303 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
1304 if (err < 0)
1305 goto __error;
1306
1307 *chip_return = chip;
1308 return 0;
1309
1310 __error:
1311 snd_pmac_free(chip);
1312 return err;
1313}
1314
1315
1316/*
1317 * sleep notify for powerbook
1318 */
1319
1320#ifdef CONFIG_PM
1321
1322/*
1323 * Save state when going to sleep, restore it afterwards.
1324 */
1325
1326void snd_pmac_suspend(struct snd_pmac *chip)
1327{
1328 unsigned long flags;
1329
1330 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
1331 if (chip->suspend)
1332 chip->suspend(chip);
1333 spin_lock_irqsave(&chip->reg_lock, flags);
1334 snd_pmac_beep_stop(chip);
1335 spin_unlock_irqrestore(&chip->reg_lock, flags);
1336 if (chip->irq >= 0)
1337 disable_irq(chip->irq);
1338 if (chip->tx_irq >= 0)
1339 disable_irq(chip->tx_irq);
1340 if (chip->rx_irq >= 0)
1341 disable_irq(chip->rx_irq);
1342 snd_pmac_sound_feature(chip, 0);
1343}
1344
1345void snd_pmac_resume(struct snd_pmac *chip)
1346{
1347 snd_pmac_sound_feature(chip, 1);
1348 if (chip->resume)
1349 chip->resume(chip);
1350 /* enable CD sound input */
1351 if (chip->macio_base && chip->is_pbook_G3)
1352 out_8(chip->macio_base + 0x37, 3);
1353 else if (chip->is_pbook_3400)
1354 in_8(chip->latch_base + 0x190);
1355
1356 snd_pmac_pcm_set_format(chip);
1357
1358 if (chip->irq >= 0)
1359 enable_irq(chip->irq);
1360 if (chip->tx_irq >= 0)
1361 enable_irq(chip->tx_irq);
1362 if (chip->rx_irq >= 0)
1363 enable_irq(chip->rx_irq);
1364
1365 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
1366}
1367
1368#endif /* CONFIG_PM */
1369
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * PMac DBDMA 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/irq.h>
12#include <linux/init.h>
13#include <linux/delay.h>
14#include <linux/slab.h>
15#include <linux/interrupt.h>
16#include <linux/pci.h>
17#include <linux/dma-mapping.h>
18#include <linux/of_address.h>
19#include <linux/of_irq.h>
20#include <sound/core.h>
21#include "pmac.h"
22#include <sound/pcm_params.h>
23#include <asm/pmac_feature.h>
24
25
26/* fixed frequency table for awacs, screamer, burgundy, DACA (44100 max) */
27static const int awacs_freqs[8] = {
28 44100, 29400, 22050, 17640, 14700, 11025, 8820, 7350
29};
30/* fixed frequency table for tumbler */
31static const int tumbler_freqs[1] = {
32 44100
33};
34
35
36/*
37 * we will allocate a single 'emergency' dbdma cmd block to use if the
38 * tx status comes up "DEAD". This happens on some PowerComputing Pmac
39 * clones, either owing to a bug in dbdma or some interaction between
40 * IDE and sound. However, this measure would deal with DEAD status if
41 * it appeared elsewhere.
42 */
43static struct pmac_dbdma emergency_dbdma;
44static int emergency_in_use;
45
46
47/*
48 * allocate DBDMA command arrays
49 */
50static int snd_pmac_dbdma_alloc(struct snd_pmac *chip, struct pmac_dbdma *rec, int size)
51{
52 unsigned int rsize = sizeof(struct dbdma_cmd) * (size + 1);
53
54 rec->space = dma_alloc_coherent(&chip->pdev->dev, rsize,
55 &rec->dma_base, GFP_KERNEL);
56 if (rec->space == NULL)
57 return -ENOMEM;
58 rec->size = size;
59 memset(rec->space, 0, rsize);
60 rec->cmds = (void __iomem *)DBDMA_ALIGN(rec->space);
61 rec->addr = rec->dma_base + (unsigned long)((char *)rec->cmds - (char *)rec->space);
62
63 return 0;
64}
65
66static void snd_pmac_dbdma_free(struct snd_pmac *chip, struct pmac_dbdma *rec)
67{
68 if (rec->space) {
69 unsigned int rsize = sizeof(struct dbdma_cmd) * (rec->size + 1);
70
71 dma_free_coherent(&chip->pdev->dev, rsize, rec->space, rec->dma_base);
72 }
73}
74
75
76/*
77 * pcm stuff
78 */
79
80/*
81 * look up frequency table
82 */
83
84unsigned int snd_pmac_rate_index(struct snd_pmac *chip, struct pmac_stream *rec, unsigned int rate)
85{
86 int i, ok, found;
87
88 ok = rec->cur_freqs;
89 if (rate > chip->freq_table[0])
90 return 0;
91 found = 0;
92 for (i = 0; i < chip->num_freqs; i++, ok >>= 1) {
93 if (! (ok & 1)) continue;
94 found = i;
95 if (rate >= chip->freq_table[i])
96 break;
97 }
98 return found;
99}
100
101/*
102 * check whether another stream is active
103 */
104static inline int another_stream(int stream)
105{
106 return (stream == SNDRV_PCM_STREAM_PLAYBACK) ?
107 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
108}
109
110/*
111 * get a stream of the opposite direction
112 */
113static struct pmac_stream *snd_pmac_get_stream(struct snd_pmac *chip, int stream)
114{
115 switch (stream) {
116 case SNDRV_PCM_STREAM_PLAYBACK:
117 return &chip->playback;
118 case SNDRV_PCM_STREAM_CAPTURE:
119 return &chip->capture;
120 default:
121 snd_BUG();
122 return NULL;
123 }
124}
125
126/*
127 * wait while run status is on
128 */
129static inline void
130snd_pmac_wait_ack(struct pmac_stream *rec)
131{
132 int timeout = 50000;
133 while ((in_le32(&rec->dma->status) & RUN) && timeout-- > 0)
134 udelay(1);
135}
136
137/*
138 * set the format and rate to the chip.
139 * call the lowlevel function if defined (e.g. for AWACS).
140 */
141static void snd_pmac_pcm_set_format(struct snd_pmac *chip)
142{
143 /* set up frequency and format */
144 out_le32(&chip->awacs->control, chip->control_mask | (chip->rate_index << 8));
145 out_le32(&chip->awacs->byteswap, chip->format == SNDRV_PCM_FORMAT_S16_LE ? 1 : 0);
146 if (chip->set_format)
147 chip->set_format(chip);
148}
149
150/*
151 * stop the DMA transfer
152 */
153static inline void snd_pmac_dma_stop(struct pmac_stream *rec)
154{
155 out_le32(&rec->dma->control, (RUN|WAKE|FLUSH|PAUSE) << 16);
156 snd_pmac_wait_ack(rec);
157}
158
159/*
160 * set the command pointer address
161 */
162static inline void snd_pmac_dma_set_command(struct pmac_stream *rec, struct pmac_dbdma *cmd)
163{
164 out_le32(&rec->dma->cmdptr, cmd->addr);
165}
166
167/*
168 * start the DMA
169 */
170static inline void snd_pmac_dma_run(struct pmac_stream *rec, int status)
171{
172 out_le32(&rec->dma->control, status | (status << 16));
173}
174
175
176/*
177 * prepare playback/capture stream
178 */
179static int snd_pmac_pcm_prepare(struct snd_pmac *chip, struct pmac_stream *rec, struct snd_pcm_substream *subs)
180{
181 int i;
182 volatile struct dbdma_cmd __iomem *cp;
183 struct snd_pcm_runtime *runtime = subs->runtime;
184 int rate_index;
185 long offset;
186 struct pmac_stream *astr;
187
188 rec->dma_size = snd_pcm_lib_buffer_bytes(subs);
189 rec->period_size = snd_pcm_lib_period_bytes(subs);
190 rec->nperiods = rec->dma_size / rec->period_size;
191 rec->cur_period = 0;
192 rate_index = snd_pmac_rate_index(chip, rec, runtime->rate);
193
194 /* set up constraints */
195 astr = snd_pmac_get_stream(chip, another_stream(rec->stream));
196 if (! astr)
197 return -EINVAL;
198 astr->cur_freqs = 1 << rate_index;
199 astr->cur_formats = 1 << runtime->format;
200 chip->rate_index = rate_index;
201 chip->format = runtime->format;
202
203 /* We really want to execute a DMA stop command, after the AWACS
204 * is initialized.
205 * For reasons I don't understand, it stops the hissing noise
206 * common to many PowerBook G3 systems and random noise otherwise
207 * captured on iBook2's about every third time. -ReneR
208 */
209 spin_lock_irq(&chip->reg_lock);
210 snd_pmac_dma_stop(rec);
211 chip->extra_dma.cmds->command = cpu_to_le16(DBDMA_STOP);
212 snd_pmac_dma_set_command(rec, &chip->extra_dma);
213 snd_pmac_dma_run(rec, RUN);
214 spin_unlock_irq(&chip->reg_lock);
215 mdelay(5);
216 spin_lock_irq(&chip->reg_lock);
217 /* continuous DMA memory type doesn't provide the physical address,
218 * so we need to resolve the address here...
219 */
220 offset = runtime->dma_addr;
221 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) {
222 cp->phy_addr = cpu_to_le32(offset);
223 cp->req_count = cpu_to_le16(rec->period_size);
224 /*cp->res_count = cpu_to_le16(0);*/
225 cp->xfer_status = cpu_to_le16(0);
226 offset += rec->period_size;
227 }
228 /* make loop */
229 cp->command = cpu_to_le16(DBDMA_NOP | BR_ALWAYS);
230 cp->cmd_dep = cpu_to_le32(rec->cmd.addr);
231
232 snd_pmac_dma_stop(rec);
233 snd_pmac_dma_set_command(rec, &rec->cmd);
234 spin_unlock_irq(&chip->reg_lock);
235
236 return 0;
237}
238
239
240/*
241 * PCM trigger/stop
242 */
243static int snd_pmac_pcm_trigger(struct snd_pmac *chip, struct pmac_stream *rec,
244 struct snd_pcm_substream *subs, int cmd)
245{
246 volatile struct dbdma_cmd __iomem *cp;
247 int i, command;
248
249 switch (cmd) {
250 case SNDRV_PCM_TRIGGER_START:
251 case SNDRV_PCM_TRIGGER_RESUME:
252 if (rec->running)
253 return -EBUSY;
254 command = (subs->stream == SNDRV_PCM_STREAM_PLAYBACK ?
255 OUTPUT_MORE : INPUT_MORE) + INTR_ALWAYS;
256 spin_lock(&chip->reg_lock);
257 snd_pmac_beep_stop(chip);
258 snd_pmac_pcm_set_format(chip);
259 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++)
260 out_le16(&cp->command, command);
261 snd_pmac_dma_set_command(rec, &rec->cmd);
262 (void)in_le32(&rec->dma->status);
263 snd_pmac_dma_run(rec, RUN|WAKE);
264 rec->running = 1;
265 spin_unlock(&chip->reg_lock);
266 break;
267
268 case SNDRV_PCM_TRIGGER_STOP:
269 case SNDRV_PCM_TRIGGER_SUSPEND:
270 spin_lock(&chip->reg_lock);
271 rec->running = 0;
272 snd_pmac_dma_stop(rec);
273 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++)
274 out_le16(&cp->command, DBDMA_STOP);
275 spin_unlock(&chip->reg_lock);
276 break;
277
278 default:
279 return -EINVAL;
280 }
281
282 return 0;
283}
284
285/*
286 * return the current pointer
287 */
288inline
289static snd_pcm_uframes_t snd_pmac_pcm_pointer(struct snd_pmac *chip,
290 struct pmac_stream *rec,
291 struct snd_pcm_substream *subs)
292{
293 int count = 0;
294
295#if 1 /* hmm.. how can we get the current dma pointer?? */
296 int stat;
297 volatile struct dbdma_cmd __iomem *cp = &rec->cmd.cmds[rec->cur_period];
298 stat = le16_to_cpu(cp->xfer_status);
299 if (stat & (ACTIVE|DEAD)) {
300 count = in_le16(&cp->res_count);
301 if (count)
302 count = rec->period_size - count;
303 }
304#endif
305 count += rec->cur_period * rec->period_size;
306 return bytes_to_frames(subs->runtime, count);
307}
308
309/*
310 * playback
311 */
312
313static int snd_pmac_playback_prepare(struct snd_pcm_substream *subs)
314{
315 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
316 return snd_pmac_pcm_prepare(chip, &chip->playback, subs);
317}
318
319static int snd_pmac_playback_trigger(struct snd_pcm_substream *subs,
320 int cmd)
321{
322 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
323 return snd_pmac_pcm_trigger(chip, &chip->playback, subs, cmd);
324}
325
326static snd_pcm_uframes_t snd_pmac_playback_pointer(struct snd_pcm_substream *subs)
327{
328 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
329 return snd_pmac_pcm_pointer(chip, &chip->playback, subs);
330}
331
332
333/*
334 * capture
335 */
336
337static int snd_pmac_capture_prepare(struct snd_pcm_substream *subs)
338{
339 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
340 return snd_pmac_pcm_prepare(chip, &chip->capture, subs);
341}
342
343static int snd_pmac_capture_trigger(struct snd_pcm_substream *subs,
344 int cmd)
345{
346 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
347 return snd_pmac_pcm_trigger(chip, &chip->capture, subs, cmd);
348}
349
350static snd_pcm_uframes_t snd_pmac_capture_pointer(struct snd_pcm_substream *subs)
351{
352 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
353 return snd_pmac_pcm_pointer(chip, &chip->capture, subs);
354}
355
356
357/*
358 * Handle DEAD DMA transfers:
359 * if the TX status comes up "DEAD" - reported on some Power Computing machines
360 * we need to re-start the dbdma - but from a different physical start address
361 * and with a different transfer length. It would get very messy to do this
362 * with the normal dbdma_cmd blocks - we would have to re-write the buffer start
363 * addresses each time. So, we will keep a single dbdma_cmd block which can be
364 * fiddled with.
365 * When DEAD status is first reported the content of the faulted dbdma block is
366 * copied into the emergency buffer and we note that the buffer is in use.
367 * we then bump the start physical address by the amount that was successfully
368 * output before it died.
369 * On any subsequent DEAD result we just do the bump-ups (we know that we are
370 * already using the emergency dbdma_cmd).
371 * CHECK: this just tries to "do it". It is possible that we should abandon
372 * xfers when the number of residual bytes gets below a certain value - I can
373 * see that this might cause a loop-forever if a too small transfer causes
374 * DEAD status. However this is a TODO for now - we'll see what gets reported.
375 * When we get a successful transfer result with the emergency buffer we just
376 * pretend that it completed using the original dmdma_cmd and carry on. The
377 * 'next_cmd' field will already point back to the original loop of blocks.
378 */
379static inline void snd_pmac_pcm_dead_xfer(struct pmac_stream *rec,
380 volatile struct dbdma_cmd __iomem *cp)
381{
382 unsigned short req, res ;
383 unsigned int phy ;
384
385 /* to clear DEAD status we must first clear RUN
386 set it to quiescent to be on the safe side */
387 (void)in_le32(&rec->dma->status);
388 out_le32(&rec->dma->control, (RUN|PAUSE|FLUSH|WAKE) << 16);
389
390 if (!emergency_in_use) { /* new problem */
391 memcpy((void *)emergency_dbdma.cmds, (void *)cp,
392 sizeof(struct dbdma_cmd));
393 emergency_in_use = 1;
394 cp->xfer_status = cpu_to_le16(0);
395 cp->req_count = cpu_to_le16(rec->period_size);
396 cp = emergency_dbdma.cmds;
397 }
398
399 /* now bump the values to reflect the amount
400 we haven't yet shifted */
401 req = le16_to_cpu(cp->req_count);
402 res = le16_to_cpu(cp->res_count);
403 phy = le32_to_cpu(cp->phy_addr);
404 phy += (req - res);
405 cp->req_count = cpu_to_le16(res);
406 cp->res_count = cpu_to_le16(0);
407 cp->xfer_status = cpu_to_le16(0);
408 cp->phy_addr = cpu_to_le32(phy);
409
410 cp->cmd_dep = cpu_to_le32(rec->cmd.addr
411 + sizeof(struct dbdma_cmd)*((rec->cur_period+1)%rec->nperiods));
412
413 cp->command = cpu_to_le16(OUTPUT_MORE | BR_ALWAYS | INTR_ALWAYS);
414
415 /* point at our patched up command block */
416 out_le32(&rec->dma->cmdptr, emergency_dbdma.addr);
417
418 /* we must re-start the controller */
419 (void)in_le32(&rec->dma->status);
420 /* should complete clearing the DEAD status */
421 out_le32(&rec->dma->control, ((RUN|WAKE) << 16) + (RUN|WAKE));
422}
423
424/*
425 * update playback/capture pointer from interrupts
426 */
427static void snd_pmac_pcm_update(struct snd_pmac *chip, struct pmac_stream *rec)
428{
429 volatile struct dbdma_cmd __iomem *cp;
430 int c;
431 int stat;
432
433 spin_lock(&chip->reg_lock);
434 if (rec->running) {
435 for (c = 0; c < rec->nperiods; c++) { /* at most all fragments */
436
437 if (emergency_in_use) /* already using DEAD xfer? */
438 cp = emergency_dbdma.cmds;
439 else
440 cp = &rec->cmd.cmds[rec->cur_period];
441
442 stat = le16_to_cpu(cp->xfer_status);
443
444 if (stat & DEAD) {
445 snd_pmac_pcm_dead_xfer(rec, cp);
446 break; /* this block is still going */
447 }
448
449 if (emergency_in_use)
450 emergency_in_use = 0 ; /* done that */
451
452 if (! (stat & ACTIVE))
453 break;
454
455 cp->xfer_status = cpu_to_le16(0);
456 cp->req_count = cpu_to_le16(rec->period_size);
457 /*cp->res_count = cpu_to_le16(0);*/
458 rec->cur_period++;
459 if (rec->cur_period >= rec->nperiods) {
460 rec->cur_period = 0;
461 }
462
463 spin_unlock(&chip->reg_lock);
464 snd_pcm_period_elapsed(rec->substream);
465 spin_lock(&chip->reg_lock);
466 }
467 }
468 spin_unlock(&chip->reg_lock);
469}
470
471
472/*
473 * hw info
474 */
475
476static const struct snd_pcm_hardware snd_pmac_playback =
477{
478 .info = (SNDRV_PCM_INFO_INTERLEAVED |
479 SNDRV_PCM_INFO_MMAP |
480 SNDRV_PCM_INFO_MMAP_VALID |
481 SNDRV_PCM_INFO_RESUME),
482 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE,
483 .rates = SNDRV_PCM_RATE_8000_44100,
484 .rate_min = 7350,
485 .rate_max = 44100,
486 .channels_min = 2,
487 .channels_max = 2,
488 .buffer_bytes_max = 131072,
489 .period_bytes_min = 256,
490 .period_bytes_max = 16384,
491 .periods_min = 3,
492 .periods_max = PMAC_MAX_FRAGS,
493};
494
495static const struct snd_pcm_hardware snd_pmac_capture =
496{
497 .info = (SNDRV_PCM_INFO_INTERLEAVED |
498 SNDRV_PCM_INFO_MMAP |
499 SNDRV_PCM_INFO_MMAP_VALID |
500 SNDRV_PCM_INFO_RESUME),
501 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE,
502 .rates = SNDRV_PCM_RATE_8000_44100,
503 .rate_min = 7350,
504 .rate_max = 44100,
505 .channels_min = 2,
506 .channels_max = 2,
507 .buffer_bytes_max = 131072,
508 .period_bytes_min = 256,
509 .period_bytes_max = 16384,
510 .periods_min = 3,
511 .periods_max = PMAC_MAX_FRAGS,
512};
513
514
515#if 0 // NYI
516static int snd_pmac_hw_rule_rate(struct snd_pcm_hw_params *params,
517 struct snd_pcm_hw_rule *rule)
518{
519 struct snd_pmac *chip = rule->private;
520 struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]);
521 int i, freq_table[8], num_freqs;
522
523 if (! rec)
524 return -EINVAL;
525 num_freqs = 0;
526 for (i = chip->num_freqs - 1; i >= 0; i--) {
527 if (rec->cur_freqs & (1 << i))
528 freq_table[num_freqs++] = chip->freq_table[i];
529 }
530
531 return snd_interval_list(hw_param_interval(params, rule->var),
532 num_freqs, freq_table, 0);
533}
534
535static int snd_pmac_hw_rule_format(struct snd_pcm_hw_params *params,
536 struct snd_pcm_hw_rule *rule)
537{
538 struct snd_pmac *chip = rule->private;
539 struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]);
540
541 if (! rec)
542 return -EINVAL;
543 return snd_mask_refine_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT),
544 rec->cur_formats);
545}
546#endif // NYI
547
548static int snd_pmac_pcm_open(struct snd_pmac *chip, struct pmac_stream *rec,
549 struct snd_pcm_substream *subs)
550{
551 struct snd_pcm_runtime *runtime = subs->runtime;
552 int i;
553
554 /* look up frequency table and fill bit mask */
555 runtime->hw.rates = 0;
556 for (i = 0; i < chip->num_freqs; i++)
557 if (chip->freqs_ok & (1 << i))
558 runtime->hw.rates |=
559 snd_pcm_rate_to_rate_bit(chip->freq_table[i]);
560
561 /* check for minimum and maximum rates */
562 for (i = 0; i < chip->num_freqs; i++) {
563 if (chip->freqs_ok & (1 << i)) {
564 runtime->hw.rate_max = chip->freq_table[i];
565 break;
566 }
567 }
568 for (i = chip->num_freqs - 1; i >= 0; i--) {
569 if (chip->freqs_ok & (1 << i)) {
570 runtime->hw.rate_min = chip->freq_table[i];
571 break;
572 }
573 }
574 runtime->hw.formats = chip->formats_ok;
575 if (chip->can_capture) {
576 if (! chip->can_duplex)
577 runtime->hw.info |= SNDRV_PCM_INFO_HALF_DUPLEX;
578 runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
579 }
580 runtime->private_data = rec;
581 rec->substream = subs;
582
583#if 0 /* FIXME: still under development.. */
584 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
585 snd_pmac_hw_rule_rate, chip, rec->stream, -1);
586 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT,
587 snd_pmac_hw_rule_format, chip, rec->stream, -1);
588#endif
589
590 runtime->hw.periods_max = rec->cmd.size - 1;
591
592 /* constraints to fix choppy sound */
593 snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
594 return 0;
595}
596
597static int snd_pmac_pcm_close(struct snd_pmac *chip, struct pmac_stream *rec,
598 struct snd_pcm_substream *subs)
599{
600 struct pmac_stream *astr;
601
602 snd_pmac_dma_stop(rec);
603
604 astr = snd_pmac_get_stream(chip, another_stream(rec->stream));
605 if (! astr)
606 return -EINVAL;
607
608 /* reset constraints */
609 astr->cur_freqs = chip->freqs_ok;
610 astr->cur_formats = chip->formats_ok;
611
612 return 0;
613}
614
615static int snd_pmac_playback_open(struct snd_pcm_substream *subs)
616{
617 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
618
619 subs->runtime->hw = snd_pmac_playback;
620 return snd_pmac_pcm_open(chip, &chip->playback, subs);
621}
622
623static int snd_pmac_capture_open(struct snd_pcm_substream *subs)
624{
625 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
626
627 subs->runtime->hw = snd_pmac_capture;
628 return snd_pmac_pcm_open(chip, &chip->capture, subs);
629}
630
631static int snd_pmac_playback_close(struct snd_pcm_substream *subs)
632{
633 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
634
635 return snd_pmac_pcm_close(chip, &chip->playback, subs);
636}
637
638static int snd_pmac_capture_close(struct snd_pcm_substream *subs)
639{
640 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
641
642 return snd_pmac_pcm_close(chip, &chip->capture, subs);
643}
644
645/*
646 */
647
648static const struct snd_pcm_ops snd_pmac_playback_ops = {
649 .open = snd_pmac_playback_open,
650 .close = snd_pmac_playback_close,
651 .prepare = snd_pmac_playback_prepare,
652 .trigger = snd_pmac_playback_trigger,
653 .pointer = snd_pmac_playback_pointer,
654};
655
656static const struct snd_pcm_ops snd_pmac_capture_ops = {
657 .open = snd_pmac_capture_open,
658 .close = snd_pmac_capture_close,
659 .prepare = snd_pmac_capture_prepare,
660 .trigger = snd_pmac_capture_trigger,
661 .pointer = snd_pmac_capture_pointer,
662};
663
664int snd_pmac_pcm_new(struct snd_pmac *chip)
665{
666 struct snd_pcm *pcm;
667 int err;
668 int num_captures = 1;
669
670 if (! chip->can_capture)
671 num_captures = 0;
672 err = snd_pcm_new(chip->card, chip->card->driver, 0, 1, num_captures, &pcm);
673 if (err < 0)
674 return err;
675
676 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_pmac_playback_ops);
677 if (chip->can_capture)
678 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_pmac_capture_ops);
679
680 pcm->private_data = chip;
681 pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
682 strcpy(pcm->name, chip->card->shortname);
683 chip->pcm = pcm;
684
685 chip->formats_ok = SNDRV_PCM_FMTBIT_S16_BE;
686 if (chip->can_byte_swap)
687 chip->formats_ok |= SNDRV_PCM_FMTBIT_S16_LE;
688
689 chip->playback.cur_formats = chip->formats_ok;
690 chip->capture.cur_formats = chip->formats_ok;
691 chip->playback.cur_freqs = chip->freqs_ok;
692 chip->capture.cur_freqs = chip->freqs_ok;
693
694 /* preallocate 64k buffer */
695 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
696 &chip->pdev->dev,
697 64 * 1024, 64 * 1024);
698
699 return 0;
700}
701
702
703static void snd_pmac_dbdma_reset(struct snd_pmac *chip)
704{
705 out_le32(&chip->playback.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
706 snd_pmac_wait_ack(&chip->playback);
707 out_le32(&chip->capture.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
708 snd_pmac_wait_ack(&chip->capture);
709}
710
711
712/*
713 * handling beep
714 */
715void snd_pmac_beep_dma_start(struct snd_pmac *chip, int bytes, unsigned long addr, int speed)
716{
717 struct pmac_stream *rec = &chip->playback;
718
719 snd_pmac_dma_stop(rec);
720 chip->extra_dma.cmds->req_count = cpu_to_le16(bytes);
721 chip->extra_dma.cmds->xfer_status = cpu_to_le16(0);
722 chip->extra_dma.cmds->cmd_dep = cpu_to_le32(chip->extra_dma.addr);
723 chip->extra_dma.cmds->phy_addr = cpu_to_le32(addr);
724 chip->extra_dma.cmds->command = cpu_to_le16(OUTPUT_MORE | BR_ALWAYS);
725 out_le32(&chip->awacs->control,
726 (in_le32(&chip->awacs->control) & ~0x1f00)
727 | (speed << 8));
728 out_le32(&chip->awacs->byteswap, 0);
729 snd_pmac_dma_set_command(rec, &chip->extra_dma);
730 snd_pmac_dma_run(rec, RUN);
731}
732
733void snd_pmac_beep_dma_stop(struct snd_pmac *chip)
734{
735 snd_pmac_dma_stop(&chip->playback);
736 chip->extra_dma.cmds->command = cpu_to_le16(DBDMA_STOP);
737 snd_pmac_pcm_set_format(chip); /* reset format */
738}
739
740
741/*
742 * interrupt handlers
743 */
744static irqreturn_t
745snd_pmac_tx_intr(int irq, void *devid)
746{
747 struct snd_pmac *chip = devid;
748 snd_pmac_pcm_update(chip, &chip->playback);
749 return IRQ_HANDLED;
750}
751
752
753static irqreturn_t
754snd_pmac_rx_intr(int irq, void *devid)
755{
756 struct snd_pmac *chip = devid;
757 snd_pmac_pcm_update(chip, &chip->capture);
758 return IRQ_HANDLED;
759}
760
761
762static irqreturn_t
763snd_pmac_ctrl_intr(int irq, void *devid)
764{
765 struct snd_pmac *chip = devid;
766 int ctrl = in_le32(&chip->awacs->control);
767
768 if (ctrl & MASK_PORTCHG) {
769 /* do something when headphone is plugged/unplugged? */
770 if (chip->update_automute)
771 chip->update_automute(chip, 1);
772 }
773 if (ctrl & MASK_CNTLERR) {
774 int err = (in_le32(&chip->awacs->codec_stat) & MASK_ERRCODE) >> 16;
775 if (err && chip->model <= PMAC_SCREAMER)
776 dev_dbg(chip->card->dev, "%s: error %x\n", __func__, err);
777 }
778 /* Writing 1s to the CNTLERR and PORTCHG bits clears them... */
779 out_le32(&chip->awacs->control, ctrl);
780 return IRQ_HANDLED;
781}
782
783
784/*
785 * a wrapper to feature call for compatibility
786 */
787static void snd_pmac_sound_feature(struct snd_pmac *chip, int enable)
788{
789 if (ppc_md.feature_call)
790 ppc_md.feature_call(PMAC_FTR_SOUND_CHIP_ENABLE, chip->node, 0, enable);
791}
792
793/*
794 * release resources
795 */
796
797static int snd_pmac_free(struct snd_pmac *chip)
798{
799 /* stop sounds */
800 if (chip->initialized) {
801 snd_pmac_dbdma_reset(chip);
802 /* disable interrupts from awacs interface */
803 out_le32(&chip->awacs->control, in_le32(&chip->awacs->control) & 0xfff);
804 }
805
806 if (chip->node)
807 snd_pmac_sound_feature(chip, 0);
808
809 /* clean up mixer if any */
810 if (chip->mixer_free)
811 chip->mixer_free(chip);
812
813 snd_pmac_detach_beep(chip);
814
815 /* release resources */
816 if (chip->irq >= 0)
817 free_irq(chip->irq, (void*)chip);
818 if (chip->tx_irq >= 0)
819 free_irq(chip->tx_irq, (void*)chip);
820 if (chip->rx_irq >= 0)
821 free_irq(chip->rx_irq, (void*)chip);
822 snd_pmac_dbdma_free(chip, &chip->playback.cmd);
823 snd_pmac_dbdma_free(chip, &chip->capture.cmd);
824 snd_pmac_dbdma_free(chip, &chip->extra_dma);
825 snd_pmac_dbdma_free(chip, &emergency_dbdma);
826 iounmap(chip->macio_base);
827 iounmap(chip->latch_base);
828 iounmap(chip->awacs);
829 iounmap(chip->playback.dma);
830 iounmap(chip->capture.dma);
831
832 if (chip->node) {
833 int i;
834 for (i = 0; i < 3; i++) {
835 if (chip->requested & (1 << i))
836 release_mem_region(chip->rsrc[i].start,
837 resource_size(&chip->rsrc[i]));
838 }
839 }
840
841 pci_dev_put(chip->pdev);
842 of_node_put(chip->node);
843 kfree(chip);
844 return 0;
845}
846
847
848/*
849 * free the device
850 */
851static int snd_pmac_dev_free(struct snd_device *device)
852{
853 struct snd_pmac *chip = device->device_data;
854 return snd_pmac_free(chip);
855}
856
857
858/*
859 * check the machine support byteswap (little-endian)
860 */
861
862static void detect_byte_swap(struct snd_pmac *chip)
863{
864 struct device_node *mio;
865
866 /* if seems that Keylargo can't byte-swap */
867 for (mio = chip->node->parent; mio; mio = mio->parent) {
868 if (of_node_name_eq(mio, "mac-io")) {
869 if (of_device_is_compatible(mio, "Keylargo"))
870 chip->can_byte_swap = 0;
871 break;
872 }
873 }
874
875 /* it seems the Pismo & iBook can't byte-swap in hardware. */
876 if (of_machine_is_compatible("PowerBook3,1") ||
877 of_machine_is_compatible("PowerBook2,1"))
878 chip->can_byte_swap = 0 ;
879
880 if (of_machine_is_compatible("PowerBook2,1"))
881 chip->can_duplex = 0;
882}
883
884
885/*
886 * detect a sound chip
887 */
888static int snd_pmac_detect(struct snd_pmac *chip)
889{
890 struct device_node *sound;
891 struct device_node *dn;
892 const unsigned int *prop;
893 unsigned int l;
894 struct macio_chip* macio;
895
896 if (!machine_is(powermac))
897 return -ENODEV;
898
899 chip->subframe = 0;
900 chip->revision = 0;
901 chip->freqs_ok = 0xff; /* all ok */
902 chip->model = PMAC_AWACS;
903 chip->can_byte_swap = 1;
904 chip->can_duplex = 1;
905 chip->can_capture = 1;
906 chip->num_freqs = ARRAY_SIZE(awacs_freqs);
907 chip->freq_table = awacs_freqs;
908 chip->pdev = NULL;
909
910 chip->control_mask = MASK_IEPC | MASK_IEE | 0x11; /* default */
911
912 /* check machine type */
913 if (of_machine_is_compatible("AAPL,3400/2400")
914 || of_machine_is_compatible("AAPL,3500"))
915 chip->is_pbook_3400 = 1;
916 else if (of_machine_is_compatible("PowerBook1,1")
917 || of_machine_is_compatible("AAPL,PowerBook1998"))
918 chip->is_pbook_G3 = 1;
919 chip->node = of_find_node_by_name(NULL, "awacs");
920 sound = of_node_get(chip->node);
921
922 /*
923 * powermac G3 models have a node called "davbus"
924 * with a child called "sound".
925 */
926 if (!chip->node)
927 chip->node = of_find_node_by_name(NULL, "davbus");
928 /*
929 * if we didn't find a davbus device, try 'i2s-a' since
930 * this seems to be what iBooks have
931 */
932 if (! chip->node) {
933 chip->node = of_find_node_by_name(NULL, "i2s-a");
934 if (chip->node && chip->node->parent &&
935 chip->node->parent->parent) {
936 if (of_device_is_compatible(chip->node->parent->parent,
937 "K2-Keylargo"))
938 chip->is_k2 = 1;
939 }
940 }
941 if (! chip->node)
942 return -ENODEV;
943
944 if (!sound) {
945 for_each_node_by_name(sound, "sound")
946 if (sound->parent == chip->node)
947 break;
948 }
949 if (! sound) {
950 of_node_put(chip->node);
951 chip->node = NULL;
952 return -ENODEV;
953 }
954 prop = of_get_property(sound, "sub-frame", NULL);
955 if (prop && *prop < 16)
956 chip->subframe = *prop;
957 prop = of_get_property(sound, "layout-id", NULL);
958 if (prop) {
959 /* partly deprecate snd-powermac, for those machines
960 * that have a layout-id property for now */
961 dev_info(chip->card->dev,
962 "snd-powermac no longer handles any machines with a layout-id property in the device-tree, use snd-aoa.\n");
963 of_node_put(sound);
964 of_node_put(chip->node);
965 chip->node = NULL;
966 return -ENODEV;
967 }
968 /* This should be verified on older screamers */
969 if (of_device_is_compatible(sound, "screamer")) {
970 chip->model = PMAC_SCREAMER;
971 // chip->can_byte_swap = 0; /* FIXME: check this */
972 }
973 if (of_device_is_compatible(sound, "burgundy")) {
974 chip->model = PMAC_BURGUNDY;
975 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
976 }
977 if (of_device_is_compatible(sound, "daca")) {
978 chip->model = PMAC_DACA;
979 chip->can_capture = 0; /* no capture */
980 chip->can_duplex = 0;
981 // chip->can_byte_swap = 0; /* FIXME: check this */
982 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
983 }
984 if (of_device_is_compatible(sound, "tumbler")) {
985 chip->model = PMAC_TUMBLER;
986 chip->can_capture = of_machine_is_compatible("PowerMac4,2")
987 || of_machine_is_compatible("PowerBook3,2")
988 || of_machine_is_compatible("PowerBook3,3")
989 || of_machine_is_compatible("PowerBook4,1")
990 || of_machine_is_compatible("PowerBook4,2")
991 || of_machine_is_compatible("PowerBook4,3");
992 chip->can_duplex = 0;
993 // chip->can_byte_swap = 0; /* FIXME: check this */
994 chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
995 chip->freq_table = tumbler_freqs;
996 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
997 }
998 if (of_device_is_compatible(sound, "snapper")) {
999 chip->model = PMAC_SNAPPER;
1000 // chip->can_byte_swap = 0; /* FIXME: check this */
1001 chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
1002 chip->freq_table = tumbler_freqs;
1003 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
1004 }
1005 prop = of_get_property(sound, "device-id", NULL);
1006 if (prop)
1007 chip->device_id = *prop;
1008 dn = of_find_node_by_name(NULL, "perch");
1009 chip->has_iic = (dn != NULL);
1010 of_node_put(dn);
1011
1012 /* We need the PCI device for DMA allocations, let's use a crude method
1013 * for now ...
1014 */
1015 macio = macio_find(chip->node, macio_unknown);
1016 if (macio == NULL)
1017 dev_warn(chip->card->dev, "snd-powermac: can't locate macio !\n");
1018 else {
1019 struct pci_dev *pdev = NULL;
1020
1021 for_each_pci_dev(pdev) {
1022 struct device_node *np = pci_device_to_OF_node(pdev);
1023 if (np && np == macio->of_node) {
1024 chip->pdev = pdev;
1025 break;
1026 }
1027 }
1028 }
1029 if (chip->pdev == NULL)
1030 dev_warn(chip->card->dev,
1031 "snd-powermac: can't locate macio PCI device !\n");
1032
1033 detect_byte_swap(chip);
1034
1035 /* look for a property saying what sample rates
1036 are available */
1037 prop = of_get_property(sound, "sample-rates", &l);
1038 if (! prop)
1039 prop = of_get_property(sound, "output-frame-rates", &l);
1040 if (prop) {
1041 int i;
1042 chip->freqs_ok = 0;
1043 for (l /= sizeof(int); l > 0; --l) {
1044 unsigned int r = *prop++;
1045 /* Apple 'Fixed' format */
1046 if (r >= 0x10000)
1047 r >>= 16;
1048 for (i = 0; i < chip->num_freqs; ++i) {
1049 if (r == chip->freq_table[i]) {
1050 chip->freqs_ok |= (1 << i);
1051 break;
1052 }
1053 }
1054 }
1055 } else {
1056 /* assume only 44.1khz */
1057 chip->freqs_ok = 1;
1058 }
1059
1060 of_node_put(sound);
1061 return 0;
1062}
1063
1064#ifdef PMAC_SUPPORT_AUTOMUTE
1065/*
1066 * auto-mute
1067 */
1068static int pmac_auto_mute_get(struct snd_kcontrol *kcontrol,
1069 struct snd_ctl_elem_value *ucontrol)
1070{
1071 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1072 ucontrol->value.integer.value[0] = chip->auto_mute;
1073 return 0;
1074}
1075
1076static int pmac_auto_mute_put(struct snd_kcontrol *kcontrol,
1077 struct snd_ctl_elem_value *ucontrol)
1078{
1079 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1080 if (ucontrol->value.integer.value[0] != chip->auto_mute) {
1081 chip->auto_mute = !!ucontrol->value.integer.value[0];
1082 if (chip->update_automute)
1083 chip->update_automute(chip, 1);
1084 return 1;
1085 }
1086 return 0;
1087}
1088
1089static int pmac_hp_detect_get(struct snd_kcontrol *kcontrol,
1090 struct snd_ctl_elem_value *ucontrol)
1091{
1092 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1093 if (chip->detect_headphone)
1094 ucontrol->value.integer.value[0] = chip->detect_headphone(chip);
1095 else
1096 ucontrol->value.integer.value[0] = 0;
1097 return 0;
1098}
1099
1100static const struct snd_kcontrol_new auto_mute_controls[] = {
1101 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1102 .name = "Auto Mute Switch",
1103 .info = snd_pmac_boolean_mono_info,
1104 .get = pmac_auto_mute_get,
1105 .put = pmac_auto_mute_put,
1106 },
1107 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1108 .name = "Headphone Detection",
1109 .access = SNDRV_CTL_ELEM_ACCESS_READ,
1110 .info = snd_pmac_boolean_mono_info,
1111 .get = pmac_hp_detect_get,
1112 },
1113};
1114
1115int snd_pmac_add_automute(struct snd_pmac *chip)
1116{
1117 int err;
1118 chip->auto_mute = 1;
1119 err = snd_ctl_add(chip->card, snd_ctl_new1(&auto_mute_controls[0], chip));
1120 if (err < 0) {
1121 dev_err(chip->card->dev,
1122 "snd-powermac: Failed to add automute control\n");
1123 return err;
1124 }
1125 chip->hp_detect_ctl = snd_ctl_new1(&auto_mute_controls[1], chip);
1126 return snd_ctl_add(chip->card, chip->hp_detect_ctl);
1127}
1128#endif /* PMAC_SUPPORT_AUTOMUTE */
1129
1130/*
1131 * create and detect a pmac chip record
1132 */
1133int snd_pmac_new(struct snd_card *card, struct snd_pmac **chip_return)
1134{
1135 struct snd_pmac *chip;
1136 struct device_node *np;
1137 int i, err;
1138 unsigned int irq;
1139 unsigned long ctrl_addr, txdma_addr, rxdma_addr;
1140 static const struct snd_device_ops ops = {
1141 .dev_free = snd_pmac_dev_free,
1142 };
1143
1144 *chip_return = NULL;
1145
1146 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1147 if (chip == NULL)
1148 return -ENOMEM;
1149 chip->card = card;
1150
1151 spin_lock_init(&chip->reg_lock);
1152 chip->irq = chip->tx_irq = chip->rx_irq = -1;
1153
1154 chip->playback.stream = SNDRV_PCM_STREAM_PLAYBACK;
1155 chip->capture.stream = SNDRV_PCM_STREAM_CAPTURE;
1156
1157 err = snd_pmac_detect(chip);
1158 if (err < 0)
1159 goto __error;
1160
1161 if (snd_pmac_dbdma_alloc(chip, &chip->playback.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
1162 snd_pmac_dbdma_alloc(chip, &chip->capture.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
1163 snd_pmac_dbdma_alloc(chip, &chip->extra_dma, 2) < 0 ||
1164 snd_pmac_dbdma_alloc(chip, &emergency_dbdma, 2) < 0) {
1165 err = -ENOMEM;
1166 goto __error;
1167 }
1168
1169 np = chip->node;
1170 chip->requested = 0;
1171 if (chip->is_k2) {
1172 static const char * const rnames[] = {
1173 "Sound Control", "Sound DMA" };
1174 for (i = 0; i < 2; i ++) {
1175 if (of_address_to_resource(np->parent, i,
1176 &chip->rsrc[i])) {
1177 dev_err(chip->card->dev,
1178 "snd: can't translate rsrc %d (%s)\n",
1179 i, rnames[i]);
1180 err = -ENODEV;
1181 goto __error;
1182 }
1183 if (request_mem_region(chip->rsrc[i].start,
1184 resource_size(&chip->rsrc[i]),
1185 rnames[i]) == NULL) {
1186 dev_err(chip->card->dev,
1187 "snd: can't request rsrc %d (%s: %pR)\n",
1188 i, rnames[i], &chip->rsrc[i]);
1189 err = -ENODEV;
1190 goto __error;
1191 }
1192 chip->requested |= (1 << i);
1193 }
1194 ctrl_addr = chip->rsrc[0].start;
1195 txdma_addr = chip->rsrc[1].start;
1196 rxdma_addr = txdma_addr + 0x100;
1197 } else {
1198 static const char * const rnames[] = {
1199 "Sound Control", "Sound Tx DMA", "Sound Rx DMA" };
1200 for (i = 0; i < 3; i ++) {
1201 if (of_address_to_resource(np, i,
1202 &chip->rsrc[i])) {
1203 dev_err(chip->card->dev,
1204 "snd: can't translate rsrc %d (%s)\n",
1205 i, rnames[i]);
1206 err = -ENODEV;
1207 goto __error;
1208 }
1209 if (request_mem_region(chip->rsrc[i].start,
1210 resource_size(&chip->rsrc[i]),
1211 rnames[i]) == NULL) {
1212 dev_err(chip->card->dev,
1213 "snd: can't request rsrc %d (%s: %pR)\n",
1214 i, rnames[i], &chip->rsrc[i]);
1215 err = -ENODEV;
1216 goto __error;
1217 }
1218 chip->requested |= (1 << i);
1219 }
1220 ctrl_addr = chip->rsrc[0].start;
1221 txdma_addr = chip->rsrc[1].start;
1222 rxdma_addr = chip->rsrc[2].start;
1223 }
1224
1225 chip->awacs = ioremap(ctrl_addr, 0x1000);
1226 chip->playback.dma = ioremap(txdma_addr, 0x100);
1227 chip->capture.dma = ioremap(rxdma_addr, 0x100);
1228 if (chip->model <= PMAC_BURGUNDY) {
1229 irq = irq_of_parse_and_map(np, 0);
1230 if (request_irq(irq, snd_pmac_ctrl_intr, 0,
1231 "PMac", (void*)chip)) {
1232 dev_err(chip->card->dev,
1233 "pmac: unable to grab IRQ %d\n", irq);
1234 err = -EBUSY;
1235 goto __error;
1236 }
1237 chip->irq = irq;
1238 }
1239 irq = irq_of_parse_and_map(np, 1);
1240 if (request_irq(irq, snd_pmac_tx_intr, 0, "PMac Output", (void*)chip)){
1241 dev_err(chip->card->dev, "pmac: unable to grab IRQ %d\n", irq);
1242 err = -EBUSY;
1243 goto __error;
1244 }
1245 chip->tx_irq = irq;
1246 irq = irq_of_parse_and_map(np, 2);
1247 if (request_irq(irq, snd_pmac_rx_intr, 0, "PMac Input", (void*)chip)) {
1248 dev_err(chip->card->dev, "pmac: unable to grab IRQ %d\n", irq);
1249 err = -EBUSY;
1250 goto __error;
1251 }
1252 chip->rx_irq = irq;
1253
1254 snd_pmac_sound_feature(chip, 1);
1255
1256 /* reset & enable interrupts */
1257 if (chip->model <= PMAC_BURGUNDY)
1258 out_le32(&chip->awacs->control, chip->control_mask);
1259
1260 /* Powerbooks have odd ways of enabling inputs such as
1261 an expansion-bay CD or sound from an internal modem
1262 or a PC-card modem. */
1263 if (chip->is_pbook_3400) {
1264 /* Enable CD and PC-card sound inputs. */
1265 /* This is done by reading from address
1266 * f301a000, + 0x10 to enable the expansion-bay
1267 * CD sound input, + 0x80 to enable the PC-card
1268 * sound input. The 0x100 enables the SCSI bus
1269 * terminator power.
1270 */
1271 chip->latch_base = ioremap (0xf301a000, 0x1000);
1272 in_8(chip->latch_base + 0x190);
1273 } else if (chip->is_pbook_G3) {
1274 struct device_node* mio;
1275 for (mio = chip->node->parent; mio; mio = mio->parent) {
1276 if (of_node_name_eq(mio, "mac-io")) {
1277 struct resource r;
1278 if (of_address_to_resource(mio, 0, &r) == 0)
1279 chip->macio_base =
1280 ioremap(r.start, 0x40);
1281 break;
1282 }
1283 }
1284 /* Enable CD sound input. */
1285 /* The relevant bits for writing to this byte are 0x8f.
1286 * I haven't found out what the 0x80 bit does.
1287 * For the 0xf bits, writing 3 or 7 enables the CD
1288 * input, any other value disables it. Values
1289 * 1, 3, 5, 7 enable the microphone. Values 0, 2,
1290 * 4, 6, 8 - f enable the input from the modem.
1291 */
1292 if (chip->macio_base)
1293 out_8(chip->macio_base + 0x37, 3);
1294 }
1295
1296 /* Reset dbdma channels */
1297 snd_pmac_dbdma_reset(chip);
1298
1299 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
1300 if (err < 0)
1301 goto __error;
1302
1303 *chip_return = chip;
1304 return 0;
1305
1306 __error:
1307 snd_pmac_free(chip);
1308 return err;
1309}
1310
1311
1312/*
1313 * sleep notify for powerbook
1314 */
1315
1316#ifdef CONFIG_PM
1317
1318/*
1319 * Save state when going to sleep, restore it afterwards.
1320 */
1321
1322void snd_pmac_suspend(struct snd_pmac *chip)
1323{
1324 unsigned long flags;
1325
1326 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
1327 if (chip->suspend)
1328 chip->suspend(chip);
1329 spin_lock_irqsave(&chip->reg_lock, flags);
1330 snd_pmac_beep_stop(chip);
1331 spin_unlock_irqrestore(&chip->reg_lock, flags);
1332 if (chip->irq >= 0)
1333 disable_irq(chip->irq);
1334 if (chip->tx_irq >= 0)
1335 disable_irq(chip->tx_irq);
1336 if (chip->rx_irq >= 0)
1337 disable_irq(chip->rx_irq);
1338 snd_pmac_sound_feature(chip, 0);
1339}
1340
1341void snd_pmac_resume(struct snd_pmac *chip)
1342{
1343 snd_pmac_sound_feature(chip, 1);
1344 if (chip->resume)
1345 chip->resume(chip);
1346 /* enable CD sound input */
1347 if (chip->macio_base && chip->is_pbook_G3)
1348 out_8(chip->macio_base + 0x37, 3);
1349 else if (chip->is_pbook_3400)
1350 in_8(chip->latch_base + 0x190);
1351
1352 snd_pmac_pcm_set_format(chip);
1353
1354 if (chip->irq >= 0)
1355 enable_irq(chip->irq);
1356 if (chip->tx_irq >= 0)
1357 enable_irq(chip->tx_irq);
1358 if (chip->rx_irq >= 0)
1359 enable_irq(chip->rx_irq);
1360
1361 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
1362}
1363
1364#endif /* CONFIG_PM */
1365