fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / sound / ppc / pmac.c
blob4f9b19c90a430036ee834120b2b6c0d91e0c2454
1 /*
2 * PMac DBDMA lowlevel functions
4 * Copyright (c) by Takashi Iwai <tiwai@suse.de>
5 * code based on dmasound.c.
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.
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.
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
23 #include <sound/driver.h>
24 #include <asm/io.h>
25 #include <asm/irq.h>
26 #include <linux/init.h>
27 #include <linux/delay.h>
28 #include <linux/slab.h>
29 #include <linux/interrupt.h>
30 #include <linux/pci.h>
31 #include <linux/dma-mapping.h>
32 #include <sound/core.h>
33 #include "pmac.h"
34 #include <sound/pcm_params.h>
35 #include <asm/pmac_feature.h>
36 #include <asm/pci-bridge.h>
39 /* fixed frequency table for awacs, screamer, burgundy, DACA (44100 max) */
40 static int awacs_freqs[8] = {
41 44100, 29400, 22050, 17640, 14700, 11025, 8820, 7350
43 /* fixed frequency table for tumbler */
44 static int tumbler_freqs[1] = {
45 44100
49 * allocate DBDMA command arrays
51 static int snd_pmac_dbdma_alloc(struct snd_pmac *chip, struct pmac_dbdma *rec, int size)
53 unsigned int rsize = sizeof(struct dbdma_cmd) * (size + 1);
55 rec->space = dma_alloc_coherent(&chip->pdev->dev, rsize,
56 &rec->dma_base, GFP_KERNEL);
57 if (rec->space == NULL)
58 return -ENOMEM;
59 rec->size = size;
60 memset(rec->space, 0, rsize);
61 rec->cmds = (void __iomem *)DBDMA_ALIGN(rec->space);
62 rec->addr = rec->dma_base + (unsigned long)((char *)rec->cmds - (char *)rec->space);
64 return 0;
67 static void snd_pmac_dbdma_free(struct snd_pmac *chip, struct pmac_dbdma *rec)
69 if (rec->space) {
70 unsigned int rsize = sizeof(struct dbdma_cmd) * (rec->size + 1);
72 dma_free_coherent(&chip->pdev->dev, rsize, rec->space, rec->dma_base);
78 * pcm stuff
82 * look up frequency table
85 unsigned int snd_pmac_rate_index(struct snd_pmac *chip, struct pmac_stream *rec, unsigned int rate)
87 int i, ok, found;
89 ok = rec->cur_freqs;
90 if (rate > chip->freq_table[0])
91 return 0;
92 found = 0;
93 for (i = 0; i < chip->num_freqs; i++, ok >>= 1) {
94 if (! (ok & 1)) continue;
95 found = i;
96 if (rate >= chip->freq_table[i])
97 break;
99 return found;
103 * check whether another stream is active
105 static inline int another_stream(int stream)
107 return (stream == SNDRV_PCM_STREAM_PLAYBACK) ?
108 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
112 * allocate buffers
114 static int snd_pmac_pcm_hw_params(struct snd_pcm_substream *subs,
115 struct snd_pcm_hw_params *hw_params)
117 return snd_pcm_lib_malloc_pages(subs, params_buffer_bytes(hw_params));
121 * release buffers
123 static int snd_pmac_pcm_hw_free(struct snd_pcm_substream *subs)
125 snd_pcm_lib_free_pages(subs);
126 return 0;
130 * get a stream of the opposite direction
132 static struct pmac_stream *snd_pmac_get_stream(struct snd_pmac *chip, int stream)
134 switch (stream) {
135 case SNDRV_PCM_STREAM_PLAYBACK:
136 return &chip->playback;
137 case SNDRV_PCM_STREAM_CAPTURE:
138 return &chip->capture;
139 default:
140 snd_BUG();
141 return NULL;
146 * wait while run status is on
148 static inline void
149 snd_pmac_wait_ack(struct pmac_stream *rec)
151 int timeout = 50000;
152 while ((in_le32(&rec->dma->status) & RUN) && timeout-- > 0)
153 udelay(1);
157 * set the format and rate to the chip.
158 * call the lowlevel function if defined (e.g. for AWACS).
160 static void snd_pmac_pcm_set_format(struct snd_pmac *chip)
162 /* set up frequency and format */
163 out_le32(&chip->awacs->control, chip->control_mask | (chip->rate_index << 8));
164 out_le32(&chip->awacs->byteswap, chip->format == SNDRV_PCM_FORMAT_S16_LE ? 1 : 0);
165 if (chip->set_format)
166 chip->set_format(chip);
170 * stop the DMA transfer
172 static inline void snd_pmac_dma_stop(struct pmac_stream *rec)
174 out_le32(&rec->dma->control, (RUN|WAKE|FLUSH|PAUSE) << 16);
175 snd_pmac_wait_ack(rec);
179 * set the command pointer address
181 static inline void snd_pmac_dma_set_command(struct pmac_stream *rec, struct pmac_dbdma *cmd)
183 out_le32(&rec->dma->cmdptr, cmd->addr);
187 * start the DMA
189 static inline void snd_pmac_dma_run(struct pmac_stream *rec, int status)
191 out_le32(&rec->dma->control, status | (status << 16));
196 * prepare playback/capture stream
198 static int snd_pmac_pcm_prepare(struct snd_pmac *chip, struct pmac_stream *rec, struct snd_pcm_substream *subs)
200 int i;
201 volatile struct dbdma_cmd __iomem *cp;
202 struct snd_pcm_runtime *runtime = subs->runtime;
203 int rate_index;
204 long offset;
205 struct pmac_stream *astr;
207 rec->dma_size = snd_pcm_lib_buffer_bytes(subs);
208 rec->period_size = snd_pcm_lib_period_bytes(subs);
209 rec->nperiods = rec->dma_size / rec->period_size;
210 rec->cur_period = 0;
211 rate_index = snd_pmac_rate_index(chip, rec, runtime->rate);
213 /* set up constraints */
214 astr = snd_pmac_get_stream(chip, another_stream(rec->stream));
215 if (! astr)
216 return -EINVAL;
217 astr->cur_freqs = 1 << rate_index;
218 astr->cur_formats = 1 << runtime->format;
219 chip->rate_index = rate_index;
220 chip->format = runtime->format;
222 /* We really want to execute a DMA stop command, after the AWACS
223 * is initialized.
224 * For reasons I don't understand, it stops the hissing noise
225 * common to many PowerBook G3 systems and random noise otherwise
226 * captured on iBook2's about every third time. -ReneR
228 spin_lock_irq(&chip->reg_lock);
229 snd_pmac_dma_stop(rec);
230 st_le16(&chip->extra_dma.cmds->command, DBDMA_STOP);
231 snd_pmac_dma_set_command(rec, &chip->extra_dma);
232 snd_pmac_dma_run(rec, RUN);
233 spin_unlock_irq(&chip->reg_lock);
234 mdelay(5);
235 spin_lock_irq(&chip->reg_lock);
236 /* continuous DMA memory type doesn't provide the physical address,
237 * so we need to resolve the address here...
239 offset = runtime->dma_addr;
240 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) {
241 st_le32(&cp->phy_addr, offset);
242 st_le16(&cp->req_count, rec->period_size);
243 /*st_le16(&cp->res_count, 0);*/
244 st_le16(&cp->xfer_status, 0);
245 offset += rec->period_size;
247 /* make loop */
248 st_le16(&cp->command, DBDMA_NOP + BR_ALWAYS);
249 st_le32(&cp->cmd_dep, rec->cmd.addr);
251 snd_pmac_dma_stop(rec);
252 snd_pmac_dma_set_command(rec, &rec->cmd);
253 spin_unlock_irq(&chip->reg_lock);
255 return 0;
260 * PCM trigger/stop
262 static int snd_pmac_pcm_trigger(struct snd_pmac *chip, struct pmac_stream *rec,
263 struct snd_pcm_substream *subs, int cmd)
265 volatile struct dbdma_cmd __iomem *cp;
266 int i, command;
268 switch (cmd) {
269 case SNDRV_PCM_TRIGGER_START:
270 case SNDRV_PCM_TRIGGER_RESUME:
271 if (rec->running)
272 return -EBUSY;
273 command = (subs->stream == SNDRV_PCM_STREAM_PLAYBACK ?
274 OUTPUT_MORE : INPUT_MORE) + INTR_ALWAYS;
275 spin_lock(&chip->reg_lock);
276 snd_pmac_beep_stop(chip);
277 snd_pmac_pcm_set_format(chip);
278 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++)
279 out_le16(&cp->command, command);
280 snd_pmac_dma_set_command(rec, &rec->cmd);
281 (void)in_le32(&rec->dma->status);
282 snd_pmac_dma_run(rec, RUN|WAKE);
283 rec->running = 1;
284 spin_unlock(&chip->reg_lock);
285 break;
287 case SNDRV_PCM_TRIGGER_STOP:
288 case SNDRV_PCM_TRIGGER_SUSPEND:
289 spin_lock(&chip->reg_lock);
290 rec->running = 0;
291 /*printk("stopped!!\n");*/
292 snd_pmac_dma_stop(rec);
293 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++)
294 out_le16(&cp->command, DBDMA_STOP);
295 spin_unlock(&chip->reg_lock);
296 break;
298 default:
299 return -EINVAL;
302 return 0;
306 * return the current pointer
308 inline
309 static snd_pcm_uframes_t snd_pmac_pcm_pointer(struct snd_pmac *chip,
310 struct pmac_stream *rec,
311 struct snd_pcm_substream *subs)
313 int count = 0;
315 #if 1 /* hmm.. how can we get the current dma pointer?? */
316 int stat;
317 volatile struct dbdma_cmd __iomem *cp = &rec->cmd.cmds[rec->cur_period];
318 stat = ld_le16(&cp->xfer_status);
319 if (stat & (ACTIVE|DEAD)) {
320 count = in_le16(&cp->res_count);
321 if (count)
322 count = rec->period_size - count;
324 #endif
325 count += rec->cur_period * rec->period_size;
326 /*printk("pointer=%d\n", count);*/
327 return bytes_to_frames(subs->runtime, count);
331 * playback
334 static int snd_pmac_playback_prepare(struct snd_pcm_substream *subs)
336 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
337 return snd_pmac_pcm_prepare(chip, &chip->playback, subs);
340 static int snd_pmac_playback_trigger(struct snd_pcm_substream *subs,
341 int cmd)
343 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
344 return snd_pmac_pcm_trigger(chip, &chip->playback, subs, cmd);
347 static snd_pcm_uframes_t snd_pmac_playback_pointer(struct snd_pcm_substream *subs)
349 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
350 return snd_pmac_pcm_pointer(chip, &chip->playback, subs);
355 * capture
358 static int snd_pmac_capture_prepare(struct snd_pcm_substream *subs)
360 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
361 return snd_pmac_pcm_prepare(chip, &chip->capture, subs);
364 static int snd_pmac_capture_trigger(struct snd_pcm_substream *subs,
365 int cmd)
367 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
368 return snd_pmac_pcm_trigger(chip, &chip->capture, subs, cmd);
371 static snd_pcm_uframes_t snd_pmac_capture_pointer(struct snd_pcm_substream *subs)
373 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
374 return snd_pmac_pcm_pointer(chip, &chip->capture, subs);
379 * update playback/capture pointer from interrupts
381 static void snd_pmac_pcm_update(struct snd_pmac *chip, struct pmac_stream *rec)
383 volatile struct dbdma_cmd __iomem *cp;
384 int c;
385 int stat;
387 spin_lock(&chip->reg_lock);
388 if (rec->running) {
389 cp = &rec->cmd.cmds[rec->cur_period];
390 for (c = 0; c < rec->nperiods; c++) { /* at most all fragments */
391 stat = ld_le16(&cp->xfer_status);
392 if (! (stat & ACTIVE))
393 break;
394 /*printk("update frag %d\n", rec->cur_period);*/
395 st_le16(&cp->xfer_status, 0);
396 st_le16(&cp->req_count, rec->period_size);
397 /*st_le16(&cp->res_count, 0);*/
398 rec->cur_period++;
399 if (rec->cur_period >= rec->nperiods) {
400 rec->cur_period = 0;
401 cp = rec->cmd.cmds;
402 } else
403 cp++;
404 spin_unlock(&chip->reg_lock);
405 snd_pcm_period_elapsed(rec->substream);
406 spin_lock(&chip->reg_lock);
409 spin_unlock(&chip->reg_lock);
414 * hw info
417 static struct snd_pcm_hardware snd_pmac_playback =
419 .info = (SNDRV_PCM_INFO_INTERLEAVED |
420 SNDRV_PCM_INFO_MMAP |
421 SNDRV_PCM_INFO_MMAP_VALID |
422 SNDRV_PCM_INFO_RESUME),
423 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE,
424 .rates = SNDRV_PCM_RATE_8000_44100,
425 .rate_min = 7350,
426 .rate_max = 44100,
427 .channels_min = 2,
428 .channels_max = 2,
429 .buffer_bytes_max = 131072,
430 .period_bytes_min = 256,
431 .period_bytes_max = 16384,
432 .periods_min = 3,
433 .periods_max = PMAC_MAX_FRAGS,
436 static struct snd_pcm_hardware snd_pmac_capture =
438 .info = (SNDRV_PCM_INFO_INTERLEAVED |
439 SNDRV_PCM_INFO_MMAP |
440 SNDRV_PCM_INFO_MMAP_VALID |
441 SNDRV_PCM_INFO_RESUME),
442 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE,
443 .rates = SNDRV_PCM_RATE_8000_44100,
444 .rate_min = 7350,
445 .rate_max = 44100,
446 .channels_min = 2,
447 .channels_max = 2,
448 .buffer_bytes_max = 131072,
449 .period_bytes_min = 256,
450 .period_bytes_max = 16384,
451 .periods_min = 3,
452 .periods_max = PMAC_MAX_FRAGS,
456 #if 0 // NYI
457 static int snd_pmac_hw_rule_rate(struct snd_pcm_hw_params *params,
458 struct snd_pcm_hw_rule *rule)
460 struct snd_pmac *chip = rule->private;
461 struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]);
462 int i, freq_table[8], num_freqs;
464 if (! rec)
465 return -EINVAL;
466 num_freqs = 0;
467 for (i = chip->num_freqs - 1; i >= 0; i--) {
468 if (rec->cur_freqs & (1 << i))
469 freq_table[num_freqs++] = chip->freq_table[i];
472 return snd_interval_list(hw_param_interval(params, rule->var),
473 num_freqs, freq_table, 0);
476 static int snd_pmac_hw_rule_format(struct snd_pcm_hw_params *params,
477 struct snd_pcm_hw_rule *rule)
479 struct snd_pmac *chip = rule->private;
480 struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]);
482 if (! rec)
483 return -EINVAL;
484 return snd_mask_refine_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT),
485 rec->cur_formats);
487 #endif // NYI
489 static int snd_pmac_pcm_open(struct snd_pmac *chip, struct pmac_stream *rec,
490 struct snd_pcm_substream *subs)
492 struct snd_pcm_runtime *runtime = subs->runtime;
493 int i;
495 /* look up frequency table and fill bit mask */
496 runtime->hw.rates = 0;
497 for (i = 0; i < chip->num_freqs; i++)
498 if (chip->freqs_ok & (1 << i))
499 runtime->hw.rates |=
500 snd_pcm_rate_to_rate_bit(chip->freq_table[i]);
502 /* check for minimum and maximum rates */
503 for (i = 0; i < chip->num_freqs; i++) {
504 if (chip->freqs_ok & (1 << i)) {
505 runtime->hw.rate_max = chip->freq_table[i];
506 break;
509 for (i = chip->num_freqs - 1; i >= 0; i--) {
510 if (chip->freqs_ok & (1 << i)) {
511 runtime->hw.rate_min = chip->freq_table[i];
512 break;
515 runtime->hw.formats = chip->formats_ok;
516 if (chip->can_capture) {
517 if (! chip->can_duplex)
518 runtime->hw.info |= SNDRV_PCM_INFO_HALF_DUPLEX;
519 runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
521 runtime->private_data = rec;
522 rec->substream = subs;
524 #if 0 /* FIXME: still under development.. */
525 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
526 snd_pmac_hw_rule_rate, chip, rec->stream, -1);
527 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT,
528 snd_pmac_hw_rule_format, chip, rec->stream, -1);
529 #endif
531 runtime->hw.periods_max = rec->cmd.size - 1;
533 /* constraints to fix choppy sound */
534 snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
535 return 0;
538 static int snd_pmac_pcm_close(struct snd_pmac *chip, struct pmac_stream *rec,
539 struct snd_pcm_substream *subs)
541 struct pmac_stream *astr;
543 snd_pmac_dma_stop(rec);
545 astr = snd_pmac_get_stream(chip, another_stream(rec->stream));
546 if (! astr)
547 return -EINVAL;
549 /* reset constraints */
550 astr->cur_freqs = chip->freqs_ok;
551 astr->cur_formats = chip->formats_ok;
553 return 0;
556 static int snd_pmac_playback_open(struct snd_pcm_substream *subs)
558 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
560 subs->runtime->hw = snd_pmac_playback;
561 return snd_pmac_pcm_open(chip, &chip->playback, subs);
564 static int snd_pmac_capture_open(struct snd_pcm_substream *subs)
566 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
568 subs->runtime->hw = snd_pmac_capture;
569 return snd_pmac_pcm_open(chip, &chip->capture, subs);
572 static int snd_pmac_playback_close(struct snd_pcm_substream *subs)
574 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
576 return snd_pmac_pcm_close(chip, &chip->playback, subs);
579 static int snd_pmac_capture_close(struct snd_pcm_substream *subs)
581 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
583 return snd_pmac_pcm_close(chip, &chip->capture, subs);
589 static struct snd_pcm_ops snd_pmac_playback_ops = {
590 .open = snd_pmac_playback_open,
591 .close = snd_pmac_playback_close,
592 .ioctl = snd_pcm_lib_ioctl,
593 .hw_params = snd_pmac_pcm_hw_params,
594 .hw_free = snd_pmac_pcm_hw_free,
595 .prepare = snd_pmac_playback_prepare,
596 .trigger = snd_pmac_playback_trigger,
597 .pointer = snd_pmac_playback_pointer,
600 static struct snd_pcm_ops snd_pmac_capture_ops = {
601 .open = snd_pmac_capture_open,
602 .close = snd_pmac_capture_close,
603 .ioctl = snd_pcm_lib_ioctl,
604 .hw_params = snd_pmac_pcm_hw_params,
605 .hw_free = snd_pmac_pcm_hw_free,
606 .prepare = snd_pmac_capture_prepare,
607 .trigger = snd_pmac_capture_trigger,
608 .pointer = snd_pmac_capture_pointer,
611 int __init snd_pmac_pcm_new(struct snd_pmac *chip)
613 struct snd_pcm *pcm;
614 int err;
615 int num_captures = 1;
617 if (! chip->can_capture)
618 num_captures = 0;
619 err = snd_pcm_new(chip->card, chip->card->driver, 0, 1, num_captures, &pcm);
620 if (err < 0)
621 return err;
623 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_pmac_playback_ops);
624 if (chip->can_capture)
625 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_pmac_capture_ops);
627 pcm->private_data = chip;
628 pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
629 strcpy(pcm->name, chip->card->shortname);
630 chip->pcm = pcm;
632 chip->formats_ok = SNDRV_PCM_FMTBIT_S16_BE;
633 if (chip->can_byte_swap)
634 chip->formats_ok |= SNDRV_PCM_FMTBIT_S16_LE;
636 chip->playback.cur_formats = chip->formats_ok;
637 chip->capture.cur_formats = chip->formats_ok;
638 chip->playback.cur_freqs = chip->freqs_ok;
639 chip->capture.cur_freqs = chip->freqs_ok;
641 /* preallocate 64k buffer */
642 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
643 &chip->pdev->dev,
644 64 * 1024, 64 * 1024);
646 return 0;
650 static void snd_pmac_dbdma_reset(struct snd_pmac *chip)
652 out_le32(&chip->playback.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
653 snd_pmac_wait_ack(&chip->playback);
654 out_le32(&chip->capture.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
655 snd_pmac_wait_ack(&chip->capture);
660 * handling beep
662 void snd_pmac_beep_dma_start(struct snd_pmac *chip, int bytes, unsigned long addr, int speed)
664 struct pmac_stream *rec = &chip->playback;
666 snd_pmac_dma_stop(rec);
667 st_le16(&chip->extra_dma.cmds->req_count, bytes);
668 st_le16(&chip->extra_dma.cmds->xfer_status, 0);
669 st_le32(&chip->extra_dma.cmds->cmd_dep, chip->extra_dma.addr);
670 st_le32(&chip->extra_dma.cmds->phy_addr, addr);
671 st_le16(&chip->extra_dma.cmds->command, OUTPUT_MORE + BR_ALWAYS);
672 out_le32(&chip->awacs->control,
673 (in_le32(&chip->awacs->control) & ~0x1f00)
674 | (speed << 8));
675 out_le32(&chip->awacs->byteswap, 0);
676 snd_pmac_dma_set_command(rec, &chip->extra_dma);
677 snd_pmac_dma_run(rec, RUN);
680 void snd_pmac_beep_dma_stop(struct snd_pmac *chip)
682 snd_pmac_dma_stop(&chip->playback);
683 st_le16(&chip->extra_dma.cmds->command, DBDMA_STOP);
684 snd_pmac_pcm_set_format(chip); /* reset format */
689 * interrupt handlers
691 static irqreturn_t
692 snd_pmac_tx_intr(int irq, void *devid)
694 struct snd_pmac *chip = devid;
695 snd_pmac_pcm_update(chip, &chip->playback);
696 return IRQ_HANDLED;
700 static irqreturn_t
701 snd_pmac_rx_intr(int irq, void *devid)
703 struct snd_pmac *chip = devid;
704 snd_pmac_pcm_update(chip, &chip->capture);
705 return IRQ_HANDLED;
709 static irqreturn_t
710 snd_pmac_ctrl_intr(int irq, void *devid)
712 struct snd_pmac *chip = devid;
713 int ctrl = in_le32(&chip->awacs->control);
715 /*printk("pmac: control interrupt.. 0x%x\n", ctrl);*/
716 if (ctrl & MASK_PORTCHG) {
717 /* do something when headphone is plugged/unplugged? */
718 if (chip->update_automute)
719 chip->update_automute(chip, 1);
721 if (ctrl & MASK_CNTLERR) {
722 int err = (in_le32(&chip->awacs->codec_stat) & MASK_ERRCODE) >> 16;
723 if (err && chip->model <= PMAC_SCREAMER)
724 snd_printk(KERN_DEBUG "error %x\n", err);
726 /* Writing 1s to the CNTLERR and PORTCHG bits clears them... */
727 out_le32(&chip->awacs->control, ctrl);
728 return IRQ_HANDLED;
733 * a wrapper to feature call for compatibility
735 static void snd_pmac_sound_feature(struct snd_pmac *chip, int enable)
737 if (ppc_md.feature_call)
738 ppc_md.feature_call(PMAC_FTR_SOUND_CHIP_ENABLE, chip->node, 0, enable);
742 * release resources
745 static int snd_pmac_free(struct snd_pmac *chip)
747 /* stop sounds */
748 if (chip->initialized) {
749 snd_pmac_dbdma_reset(chip);
750 /* disable interrupts from awacs interface */
751 out_le32(&chip->awacs->control, in_le32(&chip->awacs->control) & 0xfff);
754 if (chip->node)
755 snd_pmac_sound_feature(chip, 0);
757 /* clean up mixer if any */
758 if (chip->mixer_free)
759 chip->mixer_free(chip);
761 snd_pmac_detach_beep(chip);
763 /* release resources */
764 if (chip->irq >= 0)
765 free_irq(chip->irq, (void*)chip);
766 if (chip->tx_irq >= 0)
767 free_irq(chip->tx_irq, (void*)chip);
768 if (chip->rx_irq >= 0)
769 free_irq(chip->rx_irq, (void*)chip);
770 snd_pmac_dbdma_free(chip, &chip->playback.cmd);
771 snd_pmac_dbdma_free(chip, &chip->capture.cmd);
772 snd_pmac_dbdma_free(chip, &chip->extra_dma);
773 if (chip->macio_base)
774 iounmap(chip->macio_base);
775 if (chip->latch_base)
776 iounmap(chip->latch_base);
777 if (chip->awacs)
778 iounmap(chip->awacs);
779 if (chip->playback.dma)
780 iounmap(chip->playback.dma);
781 if (chip->capture.dma)
782 iounmap(chip->capture.dma);
784 if (chip->node) {
785 int i;
786 for (i = 0; i < 3; i++) {
787 if (chip->requested & (1 << i))
788 release_mem_region(chip->rsrc[i].start,
789 chip->rsrc[i].end -
790 chip->rsrc[i].start + 1);
794 if (chip->pdev)
795 pci_dev_put(chip->pdev);
796 of_node_put(chip->node);
797 kfree(chip);
798 return 0;
803 * free the device
805 static int snd_pmac_dev_free(struct snd_device *device)
807 struct snd_pmac *chip = device->device_data;
808 return snd_pmac_free(chip);
813 * check the machine support byteswap (little-endian)
816 static void __init detect_byte_swap(struct snd_pmac *chip)
818 struct device_node *mio;
820 /* if seems that Keylargo can't byte-swap */
821 for (mio = chip->node->parent; mio; mio = mio->parent) {
822 if (strcmp(mio->name, "mac-io") == 0) {
823 if (of_device_is_compatible(mio, "Keylargo"))
824 chip->can_byte_swap = 0;
825 break;
829 /* it seems the Pismo & iBook can't byte-swap in hardware. */
830 if (machine_is_compatible("PowerBook3,1") ||
831 machine_is_compatible("PowerBook2,1"))
832 chip->can_byte_swap = 0 ;
834 if (machine_is_compatible("PowerBook2,1"))
835 chip->can_duplex = 0;
840 * detect a sound chip
842 static int __init snd_pmac_detect(struct snd_pmac *chip)
844 struct device_node *sound;
845 struct device_node *dn;
846 const unsigned int *prop;
847 unsigned int l;
848 struct macio_chip* macio;
850 if (!machine_is(powermac))
851 return -ENODEV;
853 chip->subframe = 0;
854 chip->revision = 0;
855 chip->freqs_ok = 0xff; /* all ok */
856 chip->model = PMAC_AWACS;
857 chip->can_byte_swap = 1;
858 chip->can_duplex = 1;
859 chip->can_capture = 1;
860 chip->num_freqs = ARRAY_SIZE(awacs_freqs);
861 chip->freq_table = awacs_freqs;
862 chip->pdev = NULL;
864 chip->control_mask = MASK_IEPC | MASK_IEE | 0x11; /* default */
866 /* check machine type */
867 if (machine_is_compatible("AAPL,3400/2400")
868 || machine_is_compatible("AAPL,3500"))
869 chip->is_pbook_3400 = 1;
870 else if (machine_is_compatible("PowerBook1,1")
871 || machine_is_compatible("AAPL,PowerBook1998"))
872 chip->is_pbook_G3 = 1;
873 chip->node = of_find_node_by_name(NULL, "awacs");
874 sound = of_node_get(chip->node);
877 * powermac G3 models have a node called "davbus"
878 * with a child called "sound".
880 if (!chip->node)
881 chip->node = of_find_node_by_name(NULL, "davbus");
883 * if we didn't find a davbus device, try 'i2s-a' since
884 * this seems to be what iBooks have
886 if (! chip->node) {
887 chip->node = of_find_node_by_name(NULL, "i2s-a");
888 if (chip->node && chip->node->parent &&
889 chip->node->parent->parent) {
890 if (of_device_is_compatible(chip->node->parent->parent,
891 "K2-Keylargo"))
892 chip->is_k2 = 1;
895 if (! chip->node)
896 return -ENODEV;
898 if (!sound) {
899 sound = of_find_node_by_name(NULL, "sound");
900 while (sound && sound->parent != chip->node)
901 sound = of_find_node_by_name(sound, "sound");
903 if (! sound) {
904 of_node_put(chip->node);
905 chip->node = NULL;
906 return -ENODEV;
908 prop = of_get_property(sound, "sub-frame", NULL);
909 if (prop && *prop < 16)
910 chip->subframe = *prop;
911 prop = of_get_property(sound, "layout-id", NULL);
912 if (prop) {
913 /* partly deprecate snd-powermac, for those machines
914 * that have a layout-id property for now */
915 printk(KERN_INFO "snd-powermac no longer handles any "
916 "machines with a layout-id property "
917 "in the device-tree, use snd-aoa.\n");
918 of_node_put(sound);
919 of_node_put(chip->node);
920 chip->node = NULL;
921 return -ENODEV;
923 /* This should be verified on older screamers */
924 if (of_device_is_compatible(sound, "screamer")) {
925 chip->model = PMAC_SCREAMER;
926 // chip->can_byte_swap = 0; /* FIXME: check this */
928 if (of_device_is_compatible(sound, "burgundy")) {
929 chip->model = PMAC_BURGUNDY;
930 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
932 if (of_device_is_compatible(sound, "daca")) {
933 chip->model = PMAC_DACA;
934 chip->can_capture = 0; /* no capture */
935 chip->can_duplex = 0;
936 // chip->can_byte_swap = 0; /* FIXME: check this */
937 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
939 if (of_device_is_compatible(sound, "tumbler")) {
940 chip->model = PMAC_TUMBLER;
941 chip->can_capture = 0; /* no capture */
942 chip->can_duplex = 0;
943 // chip->can_byte_swap = 0; /* FIXME: check this */
944 chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
945 chip->freq_table = tumbler_freqs;
946 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
948 if (of_device_is_compatible(sound, "snapper")) {
949 chip->model = PMAC_SNAPPER;
950 // chip->can_byte_swap = 0; /* FIXME: check this */
951 chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
952 chip->freq_table = tumbler_freqs;
953 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
955 prop = of_get_property(sound, "device-id", NULL);
956 if (prop)
957 chip->device_id = *prop;
958 dn = of_find_node_by_name(NULL, "perch");
959 chip->has_iic = (dn != NULL);
960 of_node_put(dn);
962 /* We need the PCI device for DMA allocations, let's use a crude method
963 * for now ...
965 macio = macio_find(chip->node, macio_unknown);
966 if (macio == NULL)
967 printk(KERN_WARNING "snd-powermac: can't locate macio !\n");
968 else {
969 struct pci_dev *pdev = NULL;
971 for_each_pci_dev(pdev) {
972 struct device_node *np = pci_device_to_OF_node(pdev);
973 if (np && np == macio->of_node) {
974 chip->pdev = pdev;
975 break;
979 if (chip->pdev == NULL)
980 printk(KERN_WARNING "snd-powermac: can't locate macio PCI"
981 " device !\n");
983 detect_byte_swap(chip);
985 /* look for a property saying what sample rates
986 are available */
987 prop = of_get_property(sound, "sample-rates", &l);
988 if (! prop)
989 prop = of_get_property(sound, "output-frame-rates", &l);
990 if (prop) {
991 int i;
992 chip->freqs_ok = 0;
993 for (l /= sizeof(int); l > 0; --l) {
994 unsigned int r = *prop++;
995 /* Apple 'Fixed' format */
996 if (r >= 0x10000)
997 r >>= 16;
998 for (i = 0; i < chip->num_freqs; ++i) {
999 if (r == chip->freq_table[i]) {
1000 chip->freqs_ok |= (1 << i);
1001 break;
1005 } else {
1006 /* assume only 44.1khz */
1007 chip->freqs_ok = 1;
1010 of_node_put(sound);
1011 return 0;
1014 #ifdef PMAC_SUPPORT_AUTOMUTE
1016 * auto-mute
1018 static int pmac_auto_mute_get(struct snd_kcontrol *kcontrol,
1019 struct snd_ctl_elem_value *ucontrol)
1021 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1022 ucontrol->value.integer.value[0] = chip->auto_mute;
1023 return 0;
1026 static int pmac_auto_mute_put(struct snd_kcontrol *kcontrol,
1027 struct snd_ctl_elem_value *ucontrol)
1029 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1030 if (ucontrol->value.integer.value[0] != chip->auto_mute) {
1031 chip->auto_mute = ucontrol->value.integer.value[0];
1032 if (chip->update_automute)
1033 chip->update_automute(chip, 1);
1034 return 1;
1036 return 0;
1039 static int pmac_hp_detect_get(struct snd_kcontrol *kcontrol,
1040 struct snd_ctl_elem_value *ucontrol)
1042 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1043 if (chip->detect_headphone)
1044 ucontrol->value.integer.value[0] = chip->detect_headphone(chip);
1045 else
1046 ucontrol->value.integer.value[0] = 0;
1047 return 0;
1050 static struct snd_kcontrol_new auto_mute_controls[] __initdata = {
1051 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1052 .name = "Auto Mute Switch",
1053 .info = snd_pmac_boolean_mono_info,
1054 .get = pmac_auto_mute_get,
1055 .put = pmac_auto_mute_put,
1057 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1058 .name = "Headphone Detection",
1059 .access = SNDRV_CTL_ELEM_ACCESS_READ,
1060 .info = snd_pmac_boolean_mono_info,
1061 .get = pmac_hp_detect_get,
1065 int __init snd_pmac_add_automute(struct snd_pmac *chip)
1067 int err;
1068 chip->auto_mute = 1;
1069 err = snd_ctl_add(chip->card, snd_ctl_new1(&auto_mute_controls[0], chip));
1070 if (err < 0) {
1071 printk(KERN_ERR "snd-powermac: Failed to add automute control\n");
1072 return err;
1074 chip->hp_detect_ctl = snd_ctl_new1(&auto_mute_controls[1], chip);
1075 return snd_ctl_add(chip->card, chip->hp_detect_ctl);
1077 #endif /* PMAC_SUPPORT_AUTOMUTE */
1080 * create and detect a pmac chip record
1082 int __init snd_pmac_new(struct snd_card *card, struct snd_pmac **chip_return)
1084 struct snd_pmac *chip;
1085 struct device_node *np;
1086 int i, err;
1087 unsigned int irq;
1088 unsigned long ctrl_addr, txdma_addr, rxdma_addr;
1089 static struct snd_device_ops ops = {
1090 .dev_free = snd_pmac_dev_free,
1093 *chip_return = NULL;
1095 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1096 if (chip == NULL)
1097 return -ENOMEM;
1098 chip->card = card;
1100 spin_lock_init(&chip->reg_lock);
1101 chip->irq = chip->tx_irq = chip->rx_irq = -1;
1103 chip->playback.stream = SNDRV_PCM_STREAM_PLAYBACK;
1104 chip->capture.stream = SNDRV_PCM_STREAM_CAPTURE;
1106 if ((err = snd_pmac_detect(chip)) < 0)
1107 goto __error;
1109 if (snd_pmac_dbdma_alloc(chip, &chip->playback.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
1110 snd_pmac_dbdma_alloc(chip, &chip->capture.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
1111 snd_pmac_dbdma_alloc(chip, &chip->extra_dma, 2) < 0) {
1112 err = -ENOMEM;
1113 goto __error;
1116 np = chip->node;
1117 chip->requested = 0;
1118 if (chip->is_k2) {
1119 static char *rnames[] = {
1120 "Sound Control", "Sound DMA" };
1121 for (i = 0; i < 2; i ++) {
1122 if (of_address_to_resource(np->parent, i,
1123 &chip->rsrc[i])) {
1124 printk(KERN_ERR "snd: can't translate rsrc "
1125 " %d (%s)\n", i, rnames[i]);
1126 err = -ENODEV;
1127 goto __error;
1129 if (request_mem_region(chip->rsrc[i].start,
1130 chip->rsrc[i].end -
1131 chip->rsrc[i].start + 1,
1132 rnames[i]) == NULL) {
1133 printk(KERN_ERR "snd: can't request rsrc "
1134 " %d (%s: 0x%016llx:%016llx)\n",
1135 i, rnames[i],
1136 (unsigned long long)chip->rsrc[i].start,
1137 (unsigned long long)chip->rsrc[i].end);
1138 err = -ENODEV;
1139 goto __error;
1141 chip->requested |= (1 << i);
1143 ctrl_addr = chip->rsrc[0].start;
1144 txdma_addr = chip->rsrc[1].start;
1145 rxdma_addr = txdma_addr + 0x100;
1146 } else {
1147 static char *rnames[] = {
1148 "Sound Control", "Sound Tx DMA", "Sound Rx DMA" };
1149 for (i = 0; i < 3; i ++) {
1150 if (of_address_to_resource(np, i,
1151 &chip->rsrc[i])) {
1152 printk(KERN_ERR "snd: can't translate rsrc "
1153 " %d (%s)\n", i, rnames[i]);
1154 err = -ENODEV;
1155 goto __error;
1157 if (request_mem_region(chip->rsrc[i].start,
1158 chip->rsrc[i].end -
1159 chip->rsrc[i].start + 1,
1160 rnames[i]) == NULL) {
1161 printk(KERN_ERR "snd: can't request rsrc "
1162 " %d (%s: 0x%016llx:%016llx)\n",
1163 i, rnames[i],
1164 (unsigned long long)chip->rsrc[i].start,
1165 (unsigned long long)chip->rsrc[i].end);
1166 err = -ENODEV;
1167 goto __error;
1169 chip->requested |= (1 << i);
1171 ctrl_addr = chip->rsrc[0].start;
1172 txdma_addr = chip->rsrc[1].start;
1173 rxdma_addr = chip->rsrc[2].start;
1176 chip->awacs = ioremap(ctrl_addr, 0x1000);
1177 chip->playback.dma = ioremap(txdma_addr, 0x100);
1178 chip->capture.dma = ioremap(rxdma_addr, 0x100);
1179 if (chip->model <= PMAC_BURGUNDY) {
1180 irq = irq_of_parse_and_map(np, 0);
1181 if (request_irq(irq, snd_pmac_ctrl_intr, 0,
1182 "PMac", (void*)chip)) {
1183 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n",
1184 irq);
1185 err = -EBUSY;
1186 goto __error;
1188 chip->irq = irq;
1190 irq = irq_of_parse_and_map(np, 1);
1191 if (request_irq(irq, snd_pmac_tx_intr, 0, "PMac Output", (void*)chip)){
1192 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", irq);
1193 err = -EBUSY;
1194 goto __error;
1196 chip->tx_irq = irq;
1197 irq = irq_of_parse_and_map(np, 2);
1198 if (request_irq(irq, snd_pmac_rx_intr, 0, "PMac Input", (void*)chip)) {
1199 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", irq);
1200 err = -EBUSY;
1201 goto __error;
1203 chip->rx_irq = irq;
1205 snd_pmac_sound_feature(chip, 1);
1207 /* reset */
1208 if (chip->model == PMAC_AWACS)
1209 out_le32(&chip->awacs->control, 0x11);
1211 /* Powerbooks have odd ways of enabling inputs such as
1212 an expansion-bay CD or sound from an internal modem
1213 or a PC-card modem. */
1214 if (chip->is_pbook_3400) {
1215 /* Enable CD and PC-card sound inputs. */
1216 /* This is done by reading from address
1217 * f301a000, + 0x10 to enable the expansion-bay
1218 * CD sound input, + 0x80 to enable the PC-card
1219 * sound input. The 0x100 enables the SCSI bus
1220 * terminator power.
1222 chip->latch_base = ioremap (0xf301a000, 0x1000);
1223 in_8(chip->latch_base + 0x190);
1224 } else if (chip->is_pbook_G3) {
1225 struct device_node* mio;
1226 for (mio = chip->node->parent; mio; mio = mio->parent) {
1227 if (strcmp(mio->name, "mac-io") == 0) {
1228 struct resource r;
1229 if (of_address_to_resource(mio, 0, &r) == 0)
1230 chip->macio_base =
1231 ioremap(r.start, 0x40);
1232 break;
1235 /* Enable CD sound input. */
1236 /* The relevant bits for writing to this byte are 0x8f.
1237 * I haven't found out what the 0x80 bit does.
1238 * For the 0xf bits, writing 3 or 7 enables the CD
1239 * input, any other value disables it. Values
1240 * 1, 3, 5, 7 enable the microphone. Values 0, 2,
1241 * 4, 6, 8 - f enable the input from the modem.
1243 if (chip->macio_base)
1244 out_8(chip->macio_base + 0x37, 3);
1247 /* Reset dbdma channels */
1248 snd_pmac_dbdma_reset(chip);
1250 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
1251 goto __error;
1253 *chip_return = chip;
1254 return 0;
1256 __error:
1257 snd_pmac_free(chip);
1258 return err;
1263 * sleep notify for powerbook
1266 #ifdef CONFIG_PM
1269 * Save state when going to sleep, restore it afterwards.
1272 void snd_pmac_suspend(struct snd_pmac *chip)
1274 unsigned long flags;
1276 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
1277 if (chip->suspend)
1278 chip->suspend(chip);
1279 snd_pcm_suspend_all(chip->pcm);
1280 spin_lock_irqsave(&chip->reg_lock, flags);
1281 snd_pmac_beep_stop(chip);
1282 spin_unlock_irqrestore(&chip->reg_lock, flags);
1283 if (chip->irq >= 0)
1284 disable_irq(chip->irq);
1285 if (chip->tx_irq >= 0)
1286 disable_irq(chip->tx_irq);
1287 if (chip->rx_irq >= 0)
1288 disable_irq(chip->rx_irq);
1289 snd_pmac_sound_feature(chip, 0);
1292 void snd_pmac_resume(struct snd_pmac *chip)
1294 snd_pmac_sound_feature(chip, 1);
1295 if (chip->resume)
1296 chip->resume(chip);
1297 /* enable CD sound input */
1298 if (chip->macio_base && chip->is_pbook_G3)
1299 out_8(chip->macio_base + 0x37, 3);
1300 else if (chip->is_pbook_3400)
1301 in_8(chip->latch_base + 0x190);
1303 snd_pmac_pcm_set_format(chip);
1305 if (chip->irq >= 0)
1306 enable_irq(chip->irq);
1307 if (chip->tx_irq >= 0)
1308 enable_irq(chip->tx_irq);
1309 if (chip->rx_irq >= 0)
1310 enable_irq(chip->rx_irq);
1312 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
1315 #endif /* CONFIG_PM */