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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 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
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 <asm/io.h>
24#include <asm/irq.h>
25#include <linux/init.h>
26#include <linux/delay.h>
27#include <linux/slab.h>
28#include <linux/interrupt.h>
29#include <linux/pci.h>
30#include <linux/dma-mapping.h>
31#include <sound/core.h>
32#include "pmac.h"
33#include <sound/pcm_params.h>
34#include <asm/pmac_feature.h>
35#include <asm/pci-bridge.h>
36
37
38/* fixed frequency table for awacs, screamer, burgundy, DACA (44100 max) */
39static int awacs_freqs[8] = {
40 44100, 29400, 22050, 17640, 14700, 11025, 8820, 7350
41};
42/* fixed frequency table for tumbler */
43static int tumbler_freqs[1] = {
44 44100
45};
46
47
48/*
49 * we will allocate a single 'emergency' dbdma cmd block to use if the
50 * tx status comes up "DEAD". This happens on some PowerComputing Pmac
51 * clones, either owing to a bug in dbdma or some interaction between
52 * IDE and sound. However, this measure would deal with DEAD status if
53 * it appeared elsewhere.
54 */
55static struct pmac_dbdma emergency_dbdma;
56static int emergency_in_use;
57
58
59/*
60 * allocate DBDMA command arrays
61 */
62static int snd_pmac_dbdma_alloc(struct snd_pmac *chip, struct pmac_dbdma *rec, int size)
63{
64 unsigned int rsize = sizeof(struct dbdma_cmd) * (size + 1);
65
66 rec->space = dma_alloc_coherent(&chip->pdev->dev, rsize,
67 &rec->dma_base, GFP_KERNEL);
68 if (rec->space == NULL)
69 return -ENOMEM;
70 rec->size = size;
71 memset(rec->space, 0, rsize);
72 rec->cmds = (void __iomem *)DBDMA_ALIGN(rec->space);
73 rec->addr = rec->dma_base + (unsigned long)((char *)rec->cmds - (char *)rec->space);
74
75 return 0;
76}
77
78static void snd_pmac_dbdma_free(struct snd_pmac *chip, struct pmac_dbdma *rec)
79{
80 if (rec->space) {
81 unsigned int rsize = sizeof(struct dbdma_cmd) * (rec->size + 1);
82
83 dma_free_coherent(&chip->pdev->dev, rsize, rec->space, rec->dma_base);
84 }
85}
86
87
88/*
89 * pcm stuff
90 */
91
92/*
93 * look up frequency table
94 */
95
96unsigned int snd_pmac_rate_index(struct snd_pmac *chip, struct pmac_stream *rec, unsigned int rate)
97{
98 int i, ok, found;
99
100 ok = rec->cur_freqs;
101 if (rate > chip->freq_table[0])
102 return 0;
103 found = 0;
104 for (i = 0; i < chip->num_freqs; i++, ok >>= 1) {
105 if (! (ok & 1)) continue;
106 found = i;
107 if (rate >= chip->freq_table[i])
108 break;
109 }
110 return found;
111}
112
113/*
114 * check whether another stream is active
115 */
116static inline int another_stream(int stream)
117{
118 return (stream == SNDRV_PCM_STREAM_PLAYBACK) ?
119 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
120}
121
122/*
123 * allocate buffers
124 */
125static int snd_pmac_pcm_hw_params(struct snd_pcm_substream *subs,
126 struct snd_pcm_hw_params *hw_params)
127{
128 return snd_pcm_lib_malloc_pages(subs, params_buffer_bytes(hw_params));
129}
130
131/*
132 * release buffers
133 */
134static int snd_pmac_pcm_hw_free(struct snd_pcm_substream *subs)
135{
136 snd_pcm_lib_free_pages(subs);
137 return 0;
138}
139
140/*
141 * get a stream of the opposite direction
142 */
143static struct pmac_stream *snd_pmac_get_stream(struct snd_pmac *chip, int stream)
144{
145 switch (stream) {
146 case SNDRV_PCM_STREAM_PLAYBACK:
147 return &chip->playback;
148 case SNDRV_PCM_STREAM_CAPTURE:
149 return &chip->capture;
150 default:
151 snd_BUG();
152 return NULL;
153 }
154}
155
156/*
157 * wait while run status is on
158 */
159static inline void
160snd_pmac_wait_ack(struct pmac_stream *rec)
161{
162 int timeout = 50000;
163 while ((in_le32(&rec->dma->status) & RUN) && timeout-- > 0)
164 udelay(1);
165}
166
167/*
168 * set the format and rate to the chip.
169 * call the lowlevel function if defined (e.g. for AWACS).
170 */
171static void snd_pmac_pcm_set_format(struct snd_pmac *chip)
172{
173 /* set up frequency and format */
174 out_le32(&chip->awacs->control, chip->control_mask | (chip->rate_index << 8));
175 out_le32(&chip->awacs->byteswap, chip->format == SNDRV_PCM_FORMAT_S16_LE ? 1 : 0);
176 if (chip->set_format)
177 chip->set_format(chip);
178}
179
180/*
181 * stop the DMA transfer
182 */
183static inline void snd_pmac_dma_stop(struct pmac_stream *rec)
184{
185 out_le32(&rec->dma->control, (RUN|WAKE|FLUSH|PAUSE) << 16);
186 snd_pmac_wait_ack(rec);
187}
188
189/*
190 * set the command pointer address
191 */
192static inline void snd_pmac_dma_set_command(struct pmac_stream *rec, struct pmac_dbdma *cmd)
193{
194 out_le32(&rec->dma->cmdptr, cmd->addr);
195}
196
197/*
198 * start the DMA
199 */
200static inline void snd_pmac_dma_run(struct pmac_stream *rec, int status)
201{
202 out_le32(&rec->dma->control, status | (status << 16));
203}
204
205
206/*
207 * prepare playback/capture stream
208 */
209static int snd_pmac_pcm_prepare(struct snd_pmac *chip, struct pmac_stream *rec, struct snd_pcm_substream *subs)
210{
211 int i;
212 volatile struct dbdma_cmd __iomem *cp;
213 struct snd_pcm_runtime *runtime = subs->runtime;
214 int rate_index;
215 long offset;
216 struct pmac_stream *astr;
217
218 rec->dma_size = snd_pcm_lib_buffer_bytes(subs);
219 rec->period_size = snd_pcm_lib_period_bytes(subs);
220 rec->nperiods = rec->dma_size / rec->period_size;
221 rec->cur_period = 0;
222 rate_index = snd_pmac_rate_index(chip, rec, runtime->rate);
223
224 /* set up constraints */
225 astr = snd_pmac_get_stream(chip, another_stream(rec->stream));
226 if (! astr)
227 return -EINVAL;
228 astr->cur_freqs = 1 << rate_index;
229 astr->cur_formats = 1 << runtime->format;
230 chip->rate_index = rate_index;
231 chip->format = runtime->format;
232
233 /* We really want to execute a DMA stop command, after the AWACS
234 * is initialized.
235 * For reasons I don't understand, it stops the hissing noise
236 * common to many PowerBook G3 systems and random noise otherwise
237 * captured on iBook2's about every third time. -ReneR
238 */
239 spin_lock_irq(&chip->reg_lock);
240 snd_pmac_dma_stop(rec);
241 st_le16(&chip->extra_dma.cmds->command, DBDMA_STOP);
242 snd_pmac_dma_set_command(rec, &chip->extra_dma);
243 snd_pmac_dma_run(rec, RUN);
244 spin_unlock_irq(&chip->reg_lock);
245 mdelay(5);
246 spin_lock_irq(&chip->reg_lock);
247 /* continuous DMA memory type doesn't provide the physical address,
248 * so we need to resolve the address here...
249 */
250 offset = runtime->dma_addr;
251 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) {
252 st_le32(&cp->phy_addr, offset);
253 st_le16(&cp->req_count, rec->period_size);
254 /*st_le16(&cp->res_count, 0);*/
255 st_le16(&cp->xfer_status, 0);
256 offset += rec->period_size;
257 }
258 /* make loop */
259 st_le16(&cp->command, DBDMA_NOP + BR_ALWAYS);
260 st_le32(&cp->cmd_dep, rec->cmd.addr);
261
262 snd_pmac_dma_stop(rec);
263 snd_pmac_dma_set_command(rec, &rec->cmd);
264 spin_unlock_irq(&chip->reg_lock);
265
266 return 0;
267}
268
269
270/*
271 * PCM trigger/stop
272 */
273static int snd_pmac_pcm_trigger(struct snd_pmac *chip, struct pmac_stream *rec,
274 struct snd_pcm_substream *subs, int cmd)
275{
276 volatile struct dbdma_cmd __iomem *cp;
277 int i, command;
278
279 switch (cmd) {
280 case SNDRV_PCM_TRIGGER_START:
281 case SNDRV_PCM_TRIGGER_RESUME:
282 if (rec->running)
283 return -EBUSY;
284 command = (subs->stream == SNDRV_PCM_STREAM_PLAYBACK ?
285 OUTPUT_MORE : INPUT_MORE) + INTR_ALWAYS;
286 spin_lock(&chip->reg_lock);
287 snd_pmac_beep_stop(chip);
288 snd_pmac_pcm_set_format(chip);
289 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++)
290 out_le16(&cp->command, command);
291 snd_pmac_dma_set_command(rec, &rec->cmd);
292 (void)in_le32(&rec->dma->status);
293 snd_pmac_dma_run(rec, RUN|WAKE);
294 rec->running = 1;
295 spin_unlock(&chip->reg_lock);
296 break;
297
298 case SNDRV_PCM_TRIGGER_STOP:
299 case SNDRV_PCM_TRIGGER_SUSPEND:
300 spin_lock(&chip->reg_lock);
301 rec->running = 0;
302 /*printk(KERN_DEBUG "stopped!!\n");*/
303 snd_pmac_dma_stop(rec);
304 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++)
305 out_le16(&cp->command, DBDMA_STOP);
306 spin_unlock(&chip->reg_lock);
307 break;
308
309 default:
310 return -EINVAL;
311 }
312
313 return 0;
314}
315
316/*
317 * return the current pointer
318 */
319inline
320static snd_pcm_uframes_t snd_pmac_pcm_pointer(struct snd_pmac *chip,
321 struct pmac_stream *rec,
322 struct snd_pcm_substream *subs)
323{
324 int count = 0;
325
326#if 1 /* hmm.. how can we get the current dma pointer?? */
327 int stat;
328 volatile struct dbdma_cmd __iomem *cp = &rec->cmd.cmds[rec->cur_period];
329 stat = ld_le16(&cp->xfer_status);
330 if (stat & (ACTIVE|DEAD)) {
331 count = in_le16(&cp->res_count);
332 if (count)
333 count = rec->period_size - count;
334 }
335#endif
336 count += rec->cur_period * rec->period_size;
337 /*printk(KERN_DEBUG "pointer=%d\n", count);*/
338 return bytes_to_frames(subs->runtime, count);
339}
340
341/*
342 * playback
343 */
344
345static int snd_pmac_playback_prepare(struct snd_pcm_substream *subs)
346{
347 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
348 return snd_pmac_pcm_prepare(chip, &chip->playback, subs);
349}
350
351static int snd_pmac_playback_trigger(struct snd_pcm_substream *subs,
352 int cmd)
353{
354 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
355 return snd_pmac_pcm_trigger(chip, &chip->playback, subs, cmd);
356}
357
358static snd_pcm_uframes_t snd_pmac_playback_pointer(struct snd_pcm_substream *subs)
359{
360 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
361 return snd_pmac_pcm_pointer(chip, &chip->playback, subs);
362}
363
364
365/*
366 * capture
367 */
368
369static int snd_pmac_capture_prepare(struct snd_pcm_substream *subs)
370{
371 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
372 return snd_pmac_pcm_prepare(chip, &chip->capture, subs);
373}
374
375static int snd_pmac_capture_trigger(struct snd_pcm_substream *subs,
376 int cmd)
377{
378 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
379 return snd_pmac_pcm_trigger(chip, &chip->capture, subs, cmd);
380}
381
382static snd_pcm_uframes_t snd_pmac_capture_pointer(struct snd_pcm_substream *subs)
383{
384 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
385 return snd_pmac_pcm_pointer(chip, &chip->capture, subs);
386}
387
388
389/*
390 * Handle DEAD DMA transfers:
391 * if the TX status comes up "DEAD" - reported on some Power Computing machines
392 * we need to re-start the dbdma - but from a different physical start address
393 * and with a different transfer length. It would get very messy to do this
394 * with the normal dbdma_cmd blocks - we would have to re-write the buffer start
395 * addresses each time. So, we will keep a single dbdma_cmd block which can be
396 * fiddled with.
397 * When DEAD status is first reported the content of the faulted dbdma block is
398 * copied into the emergency buffer and we note that the buffer is in use.
399 * we then bump the start physical address by the amount that was successfully
400 * output before it died.
401 * On any subsequent DEAD result we just do the bump-ups (we know that we are
402 * already using the emergency dbdma_cmd).
403 * CHECK: this just tries to "do it". It is possible that we should abandon
404 * xfers when the number of residual bytes gets below a certain value - I can
405 * see that this might cause a loop-forever if a too small transfer causes
406 * DEAD status. However this is a TODO for now - we'll see what gets reported.
407 * When we get a successful transfer result with the emergency buffer we just
408 * pretend that it completed using the original dmdma_cmd and carry on. The
409 * 'next_cmd' field will already point back to the original loop of blocks.
410 */
411static inline void snd_pmac_pcm_dead_xfer(struct pmac_stream *rec,
412 volatile struct dbdma_cmd __iomem *cp)
413{
414 unsigned short req, res ;
415 unsigned int phy ;
416
417 /* printk(KERN_WARNING "snd-powermac: DMA died - patching it up!\n"); */
418
419 /* to clear DEAD status we must first clear RUN
420 set it to quiescent to be on the safe side */
421 (void)in_le32(&rec->dma->status);
422 out_le32(&rec->dma->control, (RUN|PAUSE|FLUSH|WAKE) << 16);
423
424 if (!emergency_in_use) { /* new problem */
425 memcpy((void *)emergency_dbdma.cmds, (void *)cp,
426 sizeof(struct dbdma_cmd));
427 emergency_in_use = 1;
428 st_le16(&cp->xfer_status, 0);
429 st_le16(&cp->req_count, rec->period_size);
430 cp = emergency_dbdma.cmds;
431 }
432
433 /* now bump the values to reflect the amount
434 we haven't yet shifted */
435 req = ld_le16(&cp->req_count);
436 res = ld_le16(&cp->res_count);
437 phy = ld_le32(&cp->phy_addr);
438 phy += (req - res);
439 st_le16(&cp->req_count, res);
440 st_le16(&cp->res_count, 0);
441 st_le16(&cp->xfer_status, 0);
442 st_le32(&cp->phy_addr, phy);
443
444 st_le32(&cp->cmd_dep, rec->cmd.addr
445 + sizeof(struct dbdma_cmd)*((rec->cur_period+1)%rec->nperiods));
446
447 st_le16(&cp->command, OUTPUT_MORE | BR_ALWAYS | INTR_ALWAYS);
448
449 /* point at our patched up command block */
450 out_le32(&rec->dma->cmdptr, emergency_dbdma.addr);
451
452 /* we must re-start the controller */
453 (void)in_le32(&rec->dma->status);
454 /* should complete clearing the DEAD status */
455 out_le32(&rec->dma->control, ((RUN|WAKE) << 16) + (RUN|WAKE));
456}
457
458/*
459 * update playback/capture pointer from interrupts
460 */
461static void snd_pmac_pcm_update(struct snd_pmac *chip, struct pmac_stream *rec)
462{
463 volatile struct dbdma_cmd __iomem *cp;
464 int c;
465 int stat;
466
467 spin_lock(&chip->reg_lock);
468 if (rec->running) {
469 for (c = 0; c < rec->nperiods; c++) { /* at most all fragments */
470
471 if (emergency_in_use) /* already using DEAD xfer? */
472 cp = emergency_dbdma.cmds;
473 else
474 cp = &rec->cmd.cmds[rec->cur_period];
475
476 stat = ld_le16(&cp->xfer_status);
477
478 if (stat & DEAD) {
479 snd_pmac_pcm_dead_xfer(rec, cp);
480 break; /* this block is still going */
481 }
482
483 if (emergency_in_use)
484 emergency_in_use = 0 ; /* done that */
485
486 if (! (stat & ACTIVE))
487 break;
488
489 /*printk(KERN_DEBUG "update frag %d\n", rec->cur_period);*/
490 st_le16(&cp->xfer_status, 0);
491 st_le16(&cp->req_count, rec->period_size);
492 /*st_le16(&cp->res_count, 0);*/
493 rec->cur_period++;
494 if (rec->cur_period >= rec->nperiods) {
495 rec->cur_period = 0;
496 }
497
498 spin_unlock(&chip->reg_lock);
499 snd_pcm_period_elapsed(rec->substream);
500 spin_lock(&chip->reg_lock);
501 }
502 }
503 spin_unlock(&chip->reg_lock);
504}
505
506
507/*
508 * hw info
509 */
510
511static struct snd_pcm_hardware snd_pmac_playback =
512{
513 .info = (SNDRV_PCM_INFO_INTERLEAVED |
514 SNDRV_PCM_INFO_MMAP |
515 SNDRV_PCM_INFO_MMAP_VALID |
516 SNDRV_PCM_INFO_RESUME),
517 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE,
518 .rates = SNDRV_PCM_RATE_8000_44100,
519 .rate_min = 7350,
520 .rate_max = 44100,
521 .channels_min = 2,
522 .channels_max = 2,
523 .buffer_bytes_max = 131072,
524 .period_bytes_min = 256,
525 .period_bytes_max = 16384,
526 .periods_min = 3,
527 .periods_max = PMAC_MAX_FRAGS,
528};
529
530static struct snd_pcm_hardware snd_pmac_capture =
531{
532 .info = (SNDRV_PCM_INFO_INTERLEAVED |
533 SNDRV_PCM_INFO_MMAP |
534 SNDRV_PCM_INFO_MMAP_VALID |
535 SNDRV_PCM_INFO_RESUME),
536 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE,
537 .rates = SNDRV_PCM_RATE_8000_44100,
538 .rate_min = 7350,
539 .rate_max = 44100,
540 .channels_min = 2,
541 .channels_max = 2,
542 .buffer_bytes_max = 131072,
543 .period_bytes_min = 256,
544 .period_bytes_max = 16384,
545 .periods_min = 3,
546 .periods_max = PMAC_MAX_FRAGS,
547};
548
549
550#if 0 // NYI
551static int snd_pmac_hw_rule_rate(struct snd_pcm_hw_params *params,
552 struct snd_pcm_hw_rule *rule)
553{
554 struct snd_pmac *chip = rule->private;
555 struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]);
556 int i, freq_table[8], num_freqs;
557
558 if (! rec)
559 return -EINVAL;
560 num_freqs = 0;
561 for (i = chip->num_freqs - 1; i >= 0; i--) {
562 if (rec->cur_freqs & (1 << i))
563 freq_table[num_freqs++] = chip->freq_table[i];
564 }
565
566 return snd_interval_list(hw_param_interval(params, rule->var),
567 num_freqs, freq_table, 0);
568}
569
570static int snd_pmac_hw_rule_format(struct snd_pcm_hw_params *params,
571 struct snd_pcm_hw_rule *rule)
572{
573 struct snd_pmac *chip = rule->private;
574 struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]);
575
576 if (! rec)
577 return -EINVAL;
578 return snd_mask_refine_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT),
579 rec->cur_formats);
580}
581#endif // NYI
582
583static int snd_pmac_pcm_open(struct snd_pmac *chip, struct pmac_stream *rec,
584 struct snd_pcm_substream *subs)
585{
586 struct snd_pcm_runtime *runtime = subs->runtime;
587 int i;
588
589 /* look up frequency table and fill bit mask */
590 runtime->hw.rates = 0;
591 for (i = 0; i < chip->num_freqs; i++)
592 if (chip->freqs_ok & (1 << i))
593 runtime->hw.rates |=
594 snd_pcm_rate_to_rate_bit(chip->freq_table[i]);
595
596 /* check for minimum and maximum rates */
597 for (i = 0; i < chip->num_freqs; i++) {
598 if (chip->freqs_ok & (1 << i)) {
599 runtime->hw.rate_max = chip->freq_table[i];
600 break;
601 }
602 }
603 for (i = chip->num_freqs - 1; i >= 0; i--) {
604 if (chip->freqs_ok & (1 << i)) {
605 runtime->hw.rate_min = chip->freq_table[i];
606 break;
607 }
608 }
609 runtime->hw.formats = chip->formats_ok;
610 if (chip->can_capture) {
611 if (! chip->can_duplex)
612 runtime->hw.info |= SNDRV_PCM_INFO_HALF_DUPLEX;
613 runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
614 }
615 runtime->private_data = rec;
616 rec->substream = subs;
617
618#if 0 /* FIXME: still under development.. */
619 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
620 snd_pmac_hw_rule_rate, chip, rec->stream, -1);
621 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT,
622 snd_pmac_hw_rule_format, chip, rec->stream, -1);
623#endif
624
625 runtime->hw.periods_max = rec->cmd.size - 1;
626
627 /* constraints to fix choppy sound */
628 snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
629 return 0;
630}
631
632static int snd_pmac_pcm_close(struct snd_pmac *chip, struct pmac_stream *rec,
633 struct snd_pcm_substream *subs)
634{
635 struct pmac_stream *astr;
636
637 snd_pmac_dma_stop(rec);
638
639 astr = snd_pmac_get_stream(chip, another_stream(rec->stream));
640 if (! astr)
641 return -EINVAL;
642
643 /* reset constraints */
644 astr->cur_freqs = chip->freqs_ok;
645 astr->cur_formats = chip->formats_ok;
646
647 return 0;
648}
649
650static int snd_pmac_playback_open(struct snd_pcm_substream *subs)
651{
652 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
653
654 subs->runtime->hw = snd_pmac_playback;
655 return snd_pmac_pcm_open(chip, &chip->playback, subs);
656}
657
658static int snd_pmac_capture_open(struct snd_pcm_substream *subs)
659{
660 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
661
662 subs->runtime->hw = snd_pmac_capture;
663 return snd_pmac_pcm_open(chip, &chip->capture, subs);
664}
665
666static int snd_pmac_playback_close(struct snd_pcm_substream *subs)
667{
668 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
669
670 return snd_pmac_pcm_close(chip, &chip->playback, subs);
671}
672
673static int snd_pmac_capture_close(struct snd_pcm_substream *subs)
674{
675 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
676
677 return snd_pmac_pcm_close(chip, &chip->capture, subs);
678}
679
680/*
681 */
682
683static struct snd_pcm_ops snd_pmac_playback_ops = {
684 .open = snd_pmac_playback_open,
685 .close = snd_pmac_playback_close,
686 .ioctl = snd_pcm_lib_ioctl,
687 .hw_params = snd_pmac_pcm_hw_params,
688 .hw_free = snd_pmac_pcm_hw_free,
689 .prepare = snd_pmac_playback_prepare,
690 .trigger = snd_pmac_playback_trigger,
691 .pointer = snd_pmac_playback_pointer,
692};
693
694static struct snd_pcm_ops snd_pmac_capture_ops = {
695 .open = snd_pmac_capture_open,
696 .close = snd_pmac_capture_close,
697 .ioctl = snd_pcm_lib_ioctl,
698 .hw_params = snd_pmac_pcm_hw_params,
699 .hw_free = snd_pmac_pcm_hw_free,
700 .prepare = snd_pmac_capture_prepare,
701 .trigger = snd_pmac_capture_trigger,
702 .pointer = snd_pmac_capture_pointer,
703};
704
705int __devinit snd_pmac_pcm_new(struct snd_pmac *chip)
706{
707 struct snd_pcm *pcm;
708 int err;
709 int num_captures = 1;
710
711 if (! chip->can_capture)
712 num_captures = 0;
713 err = snd_pcm_new(chip->card, chip->card->driver, 0, 1, num_captures, &pcm);
714 if (err < 0)
715 return err;
716
717 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_pmac_playback_ops);
718 if (chip->can_capture)
719 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_pmac_capture_ops);
720
721 pcm->private_data = chip;
722 pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
723 strcpy(pcm->name, chip->card->shortname);
724 chip->pcm = pcm;
725
726 chip->formats_ok = SNDRV_PCM_FMTBIT_S16_BE;
727 if (chip->can_byte_swap)
728 chip->formats_ok |= SNDRV_PCM_FMTBIT_S16_LE;
729
730 chip->playback.cur_formats = chip->formats_ok;
731 chip->capture.cur_formats = chip->formats_ok;
732 chip->playback.cur_freqs = chip->freqs_ok;
733 chip->capture.cur_freqs = chip->freqs_ok;
734
735 /* preallocate 64k buffer */
736 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
737 &chip->pdev->dev,
738 64 * 1024, 64 * 1024);
739
740 return 0;
741}
742
743
744static void snd_pmac_dbdma_reset(struct snd_pmac *chip)
745{
746 out_le32(&chip->playback.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
747 snd_pmac_wait_ack(&chip->playback);
748 out_le32(&chip->capture.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
749 snd_pmac_wait_ack(&chip->capture);
750}
751
752
753/*
754 * handling beep
755 */
756void snd_pmac_beep_dma_start(struct snd_pmac *chip, int bytes, unsigned long addr, int speed)
757{
758 struct pmac_stream *rec = &chip->playback;
759
760 snd_pmac_dma_stop(rec);
761 st_le16(&chip->extra_dma.cmds->req_count, bytes);
762 st_le16(&chip->extra_dma.cmds->xfer_status, 0);
763 st_le32(&chip->extra_dma.cmds->cmd_dep, chip->extra_dma.addr);
764 st_le32(&chip->extra_dma.cmds->phy_addr, addr);
765 st_le16(&chip->extra_dma.cmds->command, OUTPUT_MORE + BR_ALWAYS);
766 out_le32(&chip->awacs->control,
767 (in_le32(&chip->awacs->control) & ~0x1f00)
768 | (speed << 8));
769 out_le32(&chip->awacs->byteswap, 0);
770 snd_pmac_dma_set_command(rec, &chip->extra_dma);
771 snd_pmac_dma_run(rec, RUN);
772}
773
774void snd_pmac_beep_dma_stop(struct snd_pmac *chip)
775{
776 snd_pmac_dma_stop(&chip->playback);
777 st_le16(&chip->extra_dma.cmds->command, DBDMA_STOP);
778 snd_pmac_pcm_set_format(chip); /* reset format */
779}
780
781
782/*
783 * interrupt handlers
784 */
785static irqreturn_t
786snd_pmac_tx_intr(int irq, void *devid)
787{
788 struct snd_pmac *chip = devid;
789 snd_pmac_pcm_update(chip, &chip->playback);
790 return IRQ_HANDLED;
791}
792
793
794static irqreturn_t
795snd_pmac_rx_intr(int irq, void *devid)
796{
797 struct snd_pmac *chip = devid;
798 snd_pmac_pcm_update(chip, &chip->capture);
799 return IRQ_HANDLED;
800}
801
802
803static irqreturn_t
804snd_pmac_ctrl_intr(int irq, void *devid)
805{
806 struct snd_pmac *chip = devid;
807 int ctrl = in_le32(&chip->awacs->control);
808
809 /*printk(KERN_DEBUG "pmac: control interrupt.. 0x%x\n", ctrl);*/
810 if (ctrl & MASK_PORTCHG) {
811 /* do something when headphone is plugged/unplugged? */
812 if (chip->update_automute)
813 chip->update_automute(chip, 1);
814 }
815 if (ctrl & MASK_CNTLERR) {
816 int err = (in_le32(&chip->awacs->codec_stat) & MASK_ERRCODE) >> 16;
817 if (err && chip->model <= PMAC_SCREAMER)
818 snd_printk(KERN_DEBUG "error %x\n", err);
819 }
820 /* Writing 1s to the CNTLERR and PORTCHG bits clears them... */
821 out_le32(&chip->awacs->control, ctrl);
822 return IRQ_HANDLED;
823}
824
825
826/*
827 * a wrapper to feature call for compatibility
828 */
829static void snd_pmac_sound_feature(struct snd_pmac *chip, int enable)
830{
831 if (ppc_md.feature_call)
832 ppc_md.feature_call(PMAC_FTR_SOUND_CHIP_ENABLE, chip->node, 0, enable);
833}
834
835/*
836 * release resources
837 */
838
839static int snd_pmac_free(struct snd_pmac *chip)
840{
841 /* stop sounds */
842 if (chip->initialized) {
843 snd_pmac_dbdma_reset(chip);
844 /* disable interrupts from awacs interface */
845 out_le32(&chip->awacs->control, in_le32(&chip->awacs->control) & 0xfff);
846 }
847
848 if (chip->node)
849 snd_pmac_sound_feature(chip, 0);
850
851 /* clean up mixer if any */
852 if (chip->mixer_free)
853 chip->mixer_free(chip);
854
855 snd_pmac_detach_beep(chip);
856
857 /* release resources */
858 if (chip->irq >= 0)
859 free_irq(chip->irq, (void*)chip);
860 if (chip->tx_irq >= 0)
861 free_irq(chip->tx_irq, (void*)chip);
862 if (chip->rx_irq >= 0)
863 free_irq(chip->rx_irq, (void*)chip);
864 snd_pmac_dbdma_free(chip, &chip->playback.cmd);
865 snd_pmac_dbdma_free(chip, &chip->capture.cmd);
866 snd_pmac_dbdma_free(chip, &chip->extra_dma);
867 snd_pmac_dbdma_free(chip, &emergency_dbdma);
868 if (chip->macio_base)
869 iounmap(chip->macio_base);
870 if (chip->latch_base)
871 iounmap(chip->latch_base);
872 if (chip->awacs)
873 iounmap(chip->awacs);
874 if (chip->playback.dma)
875 iounmap(chip->playback.dma);
876 if (chip->capture.dma)
877 iounmap(chip->capture.dma);
878
879 if (chip->node) {
880 int i;
881 for (i = 0; i < 3; i++) {
882 if (chip->requested & (1 << i))
883 release_mem_region(chip->rsrc[i].start,
884 resource_size(&chip->rsrc[i]));
885 }
886 }
887
888 if (chip->pdev)
889 pci_dev_put(chip->pdev);
890 of_node_put(chip->node);
891 kfree(chip);
892 return 0;
893}
894
895
896/*
897 * free the device
898 */
899static int snd_pmac_dev_free(struct snd_device *device)
900{
901 struct snd_pmac *chip = device->device_data;
902 return snd_pmac_free(chip);
903}
904
905
906/*
907 * check the machine support byteswap (little-endian)
908 */
909
910static void __devinit detect_byte_swap(struct snd_pmac *chip)
911{
912 struct device_node *mio;
913
914 /* if seems that Keylargo can't byte-swap */
915 for (mio = chip->node->parent; mio; mio = mio->parent) {
916 if (strcmp(mio->name, "mac-io") == 0) {
917 if (of_device_is_compatible(mio, "Keylargo"))
918 chip->can_byte_swap = 0;
919 break;
920 }
921 }
922
923 /* it seems the Pismo & iBook can't byte-swap in hardware. */
924 if (of_machine_is_compatible("PowerBook3,1") ||
925 of_machine_is_compatible("PowerBook2,1"))
926 chip->can_byte_swap = 0 ;
927
928 if (of_machine_is_compatible("PowerBook2,1"))
929 chip->can_duplex = 0;
930}
931
932
933/*
934 * detect a sound chip
935 */
936static int __devinit snd_pmac_detect(struct snd_pmac *chip)
937{
938 struct device_node *sound;
939 struct device_node *dn;
940 const unsigned int *prop;
941 unsigned int l;
942 struct macio_chip* macio;
943
944 if (!machine_is(powermac))
945 return -ENODEV;
946
947 chip->subframe = 0;
948 chip->revision = 0;
949 chip->freqs_ok = 0xff; /* all ok */
950 chip->model = PMAC_AWACS;
951 chip->can_byte_swap = 1;
952 chip->can_duplex = 1;
953 chip->can_capture = 1;
954 chip->num_freqs = ARRAY_SIZE(awacs_freqs);
955 chip->freq_table = awacs_freqs;
956 chip->pdev = NULL;
957
958 chip->control_mask = MASK_IEPC | MASK_IEE | 0x11; /* default */
959
960 /* check machine type */
961 if (of_machine_is_compatible("AAPL,3400/2400")
962 || of_machine_is_compatible("AAPL,3500"))
963 chip->is_pbook_3400 = 1;
964 else if (of_machine_is_compatible("PowerBook1,1")
965 || of_machine_is_compatible("AAPL,PowerBook1998"))
966 chip->is_pbook_G3 = 1;
967 chip->node = of_find_node_by_name(NULL, "awacs");
968 sound = of_node_get(chip->node);
969
970 /*
971 * powermac G3 models have a node called "davbus"
972 * with a child called "sound".
973 */
974 if (!chip->node)
975 chip->node = of_find_node_by_name(NULL, "davbus");
976 /*
977 * if we didn't find a davbus device, try 'i2s-a' since
978 * this seems to be what iBooks have
979 */
980 if (! chip->node) {
981 chip->node = of_find_node_by_name(NULL, "i2s-a");
982 if (chip->node && chip->node->parent &&
983 chip->node->parent->parent) {
984 if (of_device_is_compatible(chip->node->parent->parent,
985 "K2-Keylargo"))
986 chip->is_k2 = 1;
987 }
988 }
989 if (! chip->node)
990 return -ENODEV;
991
992 if (!sound) {
993 sound = of_find_node_by_name(NULL, "sound");
994 while (sound && sound->parent != chip->node)
995 sound = of_find_node_by_name(sound, "sound");
996 }
997 if (! sound) {
998 of_node_put(chip->node);
999 chip->node = NULL;
1000 return -ENODEV;
1001 }
1002 prop = of_get_property(sound, "sub-frame", NULL);
1003 if (prop && *prop < 16)
1004 chip->subframe = *prop;
1005 prop = of_get_property(sound, "layout-id", NULL);
1006 if (prop) {
1007 /* partly deprecate snd-powermac, for those machines
1008 * that have a layout-id property for now */
1009 printk(KERN_INFO "snd-powermac no longer handles any "
1010 "machines with a layout-id property "
1011 "in the device-tree, use snd-aoa.\n");
1012 of_node_put(sound);
1013 of_node_put(chip->node);
1014 chip->node = NULL;
1015 return -ENODEV;
1016 }
1017 /* This should be verified on older screamers */
1018 if (of_device_is_compatible(sound, "screamer")) {
1019 chip->model = PMAC_SCREAMER;
1020 // chip->can_byte_swap = 0; /* FIXME: check this */
1021 }
1022 if (of_device_is_compatible(sound, "burgundy")) {
1023 chip->model = PMAC_BURGUNDY;
1024 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
1025 }
1026 if (of_device_is_compatible(sound, "daca")) {
1027 chip->model = PMAC_DACA;
1028 chip->can_capture = 0; /* no capture */
1029 chip->can_duplex = 0;
1030 // chip->can_byte_swap = 0; /* FIXME: check this */
1031 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
1032 }
1033 if (of_device_is_compatible(sound, "tumbler")) {
1034 chip->model = PMAC_TUMBLER;
1035 chip->can_capture = of_machine_is_compatible("PowerMac4,2")
1036 || of_machine_is_compatible("PowerBook3,2")
1037 || of_machine_is_compatible("PowerBook3,3")
1038 || of_machine_is_compatible("PowerBook4,1")
1039 || of_machine_is_compatible("PowerBook4,2")
1040 || of_machine_is_compatible("PowerBook4,3");
1041 chip->can_duplex = 0;
1042 // chip->can_byte_swap = 0; /* FIXME: check this */
1043 chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
1044 chip->freq_table = tumbler_freqs;
1045 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
1046 }
1047 if (of_device_is_compatible(sound, "snapper")) {
1048 chip->model = PMAC_SNAPPER;
1049 // chip->can_byte_swap = 0; /* FIXME: check this */
1050 chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
1051 chip->freq_table = tumbler_freqs;
1052 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
1053 }
1054 prop = of_get_property(sound, "device-id", NULL);
1055 if (prop)
1056 chip->device_id = *prop;
1057 dn = of_find_node_by_name(NULL, "perch");
1058 chip->has_iic = (dn != NULL);
1059 of_node_put(dn);
1060
1061 /* We need the PCI device for DMA allocations, let's use a crude method
1062 * for now ...
1063 */
1064 macio = macio_find(chip->node, macio_unknown);
1065 if (macio == NULL)
1066 printk(KERN_WARNING "snd-powermac: can't locate macio !\n");
1067 else {
1068 struct pci_dev *pdev = NULL;
1069
1070 for_each_pci_dev(pdev) {
1071 struct device_node *np = pci_device_to_OF_node(pdev);
1072 if (np && np == macio->of_node) {
1073 chip->pdev = pdev;
1074 break;
1075 }
1076 }
1077 }
1078 if (chip->pdev == NULL)
1079 printk(KERN_WARNING "snd-powermac: can't locate macio PCI"
1080 " device !\n");
1081
1082 detect_byte_swap(chip);
1083
1084 /* look for a property saying what sample rates
1085 are available */
1086 prop = of_get_property(sound, "sample-rates", &l);
1087 if (! prop)
1088 prop = of_get_property(sound, "output-frame-rates", &l);
1089 if (prop) {
1090 int i;
1091 chip->freqs_ok = 0;
1092 for (l /= sizeof(int); l > 0; --l) {
1093 unsigned int r = *prop++;
1094 /* Apple 'Fixed' format */
1095 if (r >= 0x10000)
1096 r >>= 16;
1097 for (i = 0; i < chip->num_freqs; ++i) {
1098 if (r == chip->freq_table[i]) {
1099 chip->freqs_ok |= (1 << i);
1100 break;
1101 }
1102 }
1103 }
1104 } else {
1105 /* assume only 44.1khz */
1106 chip->freqs_ok = 1;
1107 }
1108
1109 of_node_put(sound);
1110 return 0;
1111}
1112
1113#ifdef PMAC_SUPPORT_AUTOMUTE
1114/*
1115 * auto-mute
1116 */
1117static int pmac_auto_mute_get(struct snd_kcontrol *kcontrol,
1118 struct snd_ctl_elem_value *ucontrol)
1119{
1120 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1121 ucontrol->value.integer.value[0] = chip->auto_mute;
1122 return 0;
1123}
1124
1125static int pmac_auto_mute_put(struct snd_kcontrol *kcontrol,
1126 struct snd_ctl_elem_value *ucontrol)
1127{
1128 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1129 if (ucontrol->value.integer.value[0] != chip->auto_mute) {
1130 chip->auto_mute = !!ucontrol->value.integer.value[0];
1131 if (chip->update_automute)
1132 chip->update_automute(chip, 1);
1133 return 1;
1134 }
1135 return 0;
1136}
1137
1138static int pmac_hp_detect_get(struct snd_kcontrol *kcontrol,
1139 struct snd_ctl_elem_value *ucontrol)
1140{
1141 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1142 if (chip->detect_headphone)
1143 ucontrol->value.integer.value[0] = chip->detect_headphone(chip);
1144 else
1145 ucontrol->value.integer.value[0] = 0;
1146 return 0;
1147}
1148
1149static struct snd_kcontrol_new auto_mute_controls[] __devinitdata = {
1150 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1151 .name = "Auto Mute Switch",
1152 .info = snd_pmac_boolean_mono_info,
1153 .get = pmac_auto_mute_get,
1154 .put = pmac_auto_mute_put,
1155 },
1156 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1157 .name = "Headphone Detection",
1158 .access = SNDRV_CTL_ELEM_ACCESS_READ,
1159 .info = snd_pmac_boolean_mono_info,
1160 .get = pmac_hp_detect_get,
1161 },
1162};
1163
1164int __devinit snd_pmac_add_automute(struct snd_pmac *chip)
1165{
1166 int err;
1167 chip->auto_mute = 1;
1168 err = snd_ctl_add(chip->card, snd_ctl_new1(&auto_mute_controls[0], chip));
1169 if (err < 0) {
1170 printk(KERN_ERR "snd-powermac: Failed to add automute control\n");
1171 return err;
1172 }
1173 chip->hp_detect_ctl = snd_ctl_new1(&auto_mute_controls[1], chip);
1174 return snd_ctl_add(chip->card, chip->hp_detect_ctl);
1175}
1176#endif /* PMAC_SUPPORT_AUTOMUTE */
1177
1178/*
1179 * create and detect a pmac chip record
1180 */
1181int __devinit snd_pmac_new(struct snd_card *card, struct snd_pmac **chip_return)
1182{
1183 struct snd_pmac *chip;
1184 struct device_node *np;
1185 int i, err;
1186 unsigned int irq;
1187 unsigned long ctrl_addr, txdma_addr, rxdma_addr;
1188 static struct snd_device_ops ops = {
1189 .dev_free = snd_pmac_dev_free,
1190 };
1191
1192 *chip_return = NULL;
1193
1194 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1195 if (chip == NULL)
1196 return -ENOMEM;
1197 chip->card = card;
1198
1199 spin_lock_init(&chip->reg_lock);
1200 chip->irq = chip->tx_irq = chip->rx_irq = -1;
1201
1202 chip->playback.stream = SNDRV_PCM_STREAM_PLAYBACK;
1203 chip->capture.stream = SNDRV_PCM_STREAM_CAPTURE;
1204
1205 if ((err = snd_pmac_detect(chip)) < 0)
1206 goto __error;
1207
1208 if (snd_pmac_dbdma_alloc(chip, &chip->playback.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
1209 snd_pmac_dbdma_alloc(chip, &chip->capture.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
1210 snd_pmac_dbdma_alloc(chip, &chip->extra_dma, 2) < 0 ||
1211 snd_pmac_dbdma_alloc(chip, &emergency_dbdma, 2) < 0) {
1212 err = -ENOMEM;
1213 goto __error;
1214 }
1215
1216 np = chip->node;
1217 chip->requested = 0;
1218 if (chip->is_k2) {
1219 static char *rnames[] = {
1220 "Sound Control", "Sound DMA" };
1221 for (i = 0; i < 2; i ++) {
1222 if (of_address_to_resource(np->parent, i,
1223 &chip->rsrc[i])) {
1224 printk(KERN_ERR "snd: can't translate rsrc "
1225 " %d (%s)\n", i, rnames[i]);
1226 err = -ENODEV;
1227 goto __error;
1228 }
1229 if (request_mem_region(chip->rsrc[i].start,
1230 resource_size(&chip->rsrc[i]),
1231 rnames[i]) == NULL) {
1232 printk(KERN_ERR "snd: can't request rsrc "
1233 " %d (%s: %pR)\n",
1234 i, rnames[i], &chip->rsrc[i]);
1235 err = -ENODEV;
1236 goto __error;
1237 }
1238 chip->requested |= (1 << i);
1239 }
1240 ctrl_addr = chip->rsrc[0].start;
1241 txdma_addr = chip->rsrc[1].start;
1242 rxdma_addr = txdma_addr + 0x100;
1243 } else {
1244 static char *rnames[] = {
1245 "Sound Control", "Sound Tx DMA", "Sound Rx DMA" };
1246 for (i = 0; i < 3; i ++) {
1247 if (of_address_to_resource(np, i,
1248 &chip->rsrc[i])) {
1249 printk(KERN_ERR "snd: can't translate rsrc "
1250 " %d (%s)\n", i, rnames[i]);
1251 err = -ENODEV;
1252 goto __error;
1253 }
1254 if (request_mem_region(chip->rsrc[i].start,
1255 resource_size(&chip->rsrc[i]),
1256 rnames[i]) == NULL) {
1257 printk(KERN_ERR "snd: can't request rsrc "
1258 " %d (%s: %pR)\n",
1259 i, rnames[i], &chip->rsrc[i]);
1260 err = -ENODEV;
1261 goto __error;
1262 }
1263 chip->requested |= (1 << i);
1264 }
1265 ctrl_addr = chip->rsrc[0].start;
1266 txdma_addr = chip->rsrc[1].start;
1267 rxdma_addr = chip->rsrc[2].start;
1268 }
1269
1270 chip->awacs = ioremap(ctrl_addr, 0x1000);
1271 chip->playback.dma = ioremap(txdma_addr, 0x100);
1272 chip->capture.dma = ioremap(rxdma_addr, 0x100);
1273 if (chip->model <= PMAC_BURGUNDY) {
1274 irq = irq_of_parse_and_map(np, 0);
1275 if (request_irq(irq, snd_pmac_ctrl_intr, 0,
1276 "PMac", (void*)chip)) {
1277 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n",
1278 irq);
1279 err = -EBUSY;
1280 goto __error;
1281 }
1282 chip->irq = irq;
1283 }
1284 irq = irq_of_parse_and_map(np, 1);
1285 if (request_irq(irq, snd_pmac_tx_intr, 0, "PMac Output", (void*)chip)){
1286 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", irq);
1287 err = -EBUSY;
1288 goto __error;
1289 }
1290 chip->tx_irq = irq;
1291 irq = irq_of_parse_and_map(np, 2);
1292 if (request_irq(irq, snd_pmac_rx_intr, 0, "PMac Input", (void*)chip)) {
1293 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", irq);
1294 err = -EBUSY;
1295 goto __error;
1296 }
1297 chip->rx_irq = irq;
1298
1299 snd_pmac_sound_feature(chip, 1);
1300
1301 /* reset & enable interrupts */
1302 if (chip->model <= PMAC_BURGUNDY)
1303 out_le32(&chip->awacs->control, chip->control_mask);
1304
1305 /* Powerbooks have odd ways of enabling inputs such as
1306 an expansion-bay CD or sound from an internal modem
1307 or a PC-card modem. */
1308 if (chip->is_pbook_3400) {
1309 /* Enable CD and PC-card sound inputs. */
1310 /* This is done by reading from address
1311 * f301a000, + 0x10 to enable the expansion-bay
1312 * CD sound input, + 0x80 to enable the PC-card
1313 * sound input. The 0x100 enables the SCSI bus
1314 * terminator power.
1315 */
1316 chip->latch_base = ioremap (0xf301a000, 0x1000);
1317 in_8(chip->latch_base + 0x190);
1318 } else if (chip->is_pbook_G3) {
1319 struct device_node* mio;
1320 for (mio = chip->node->parent; mio; mio = mio->parent) {
1321 if (strcmp(mio->name, "mac-io") == 0) {
1322 struct resource r;
1323 if (of_address_to_resource(mio, 0, &r) == 0)
1324 chip->macio_base =
1325 ioremap(r.start, 0x40);
1326 break;
1327 }
1328 }
1329 /* Enable CD sound input. */
1330 /* The relevant bits for writing to this byte are 0x8f.
1331 * I haven't found out what the 0x80 bit does.
1332 * For the 0xf bits, writing 3 or 7 enables the CD
1333 * input, any other value disables it. Values
1334 * 1, 3, 5, 7 enable the microphone. Values 0, 2,
1335 * 4, 6, 8 - f enable the input from the modem.
1336 */
1337 if (chip->macio_base)
1338 out_8(chip->macio_base + 0x37, 3);
1339 }
1340
1341 /* Reset dbdma channels */
1342 snd_pmac_dbdma_reset(chip);
1343
1344 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
1345 goto __error;
1346
1347 *chip_return = chip;
1348 return 0;
1349
1350 __error:
1351 snd_pmac_free(chip);
1352 return err;
1353}
1354
1355
1356/*
1357 * sleep notify for powerbook
1358 */
1359
1360#ifdef CONFIG_PM
1361
1362/*
1363 * Save state when going to sleep, restore it afterwards.
1364 */
1365
1366void snd_pmac_suspend(struct snd_pmac *chip)
1367{
1368 unsigned long flags;
1369
1370 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
1371 if (chip->suspend)
1372 chip->suspend(chip);
1373 snd_pcm_suspend_all(chip->pcm);
1374 spin_lock_irqsave(&chip->reg_lock, flags);
1375 snd_pmac_beep_stop(chip);
1376 spin_unlock_irqrestore(&chip->reg_lock, flags);
1377 if (chip->irq >= 0)
1378 disable_irq(chip->irq);
1379 if (chip->tx_irq >= 0)
1380 disable_irq(chip->tx_irq);
1381 if (chip->rx_irq >= 0)
1382 disable_irq(chip->rx_irq);
1383 snd_pmac_sound_feature(chip, 0);
1384}
1385
1386void snd_pmac_resume(struct snd_pmac *chip)
1387{
1388 snd_pmac_sound_feature(chip, 1);
1389 if (chip->resume)
1390 chip->resume(chip);
1391 /* enable CD sound input */
1392 if (chip->macio_base && chip->is_pbook_G3)
1393 out_8(chip->macio_base + 0x37, 3);
1394 else if (chip->is_pbook_3400)
1395 in_8(chip->latch_base + 0x190);
1396
1397 snd_pmac_pcm_set_format(chip);
1398
1399 if (chip->irq >= 0)
1400 enable_irq(chip->irq);
1401 if (chip->tx_irq >= 0)
1402 enable_irq(chip->tx_irq);
1403 if (chip->rx_irq >= 0)
1404 enable_irq(chip->rx_irq);
1405
1406 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
1407}
1408
1409#endif /* CONFIG_PM */
1410