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
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 <linux/of_address.h>
32 #include <linux/of_irq.h>
33 #include <sound/core.h>
35 #include <sound/pcm_params.h>
36 #include <asm/pmac_feature.h>
37 #include <asm/pci-bridge.h>
40 /* fixed frequency table for awacs, screamer, burgundy, DACA (44100 max) */
41 static int awacs_freqs[8] = {
42 44100, 29400, 22050, 17640, 14700, 11025, 8820, 7350
44 /* fixed frequency table for tumbler */
45 static int tumbler_freqs[1] = {
51 * we will allocate a single 'emergency' dbdma cmd block to use if the
52 * tx status comes up "DEAD". This happens on some PowerComputing Pmac
53 * clones, either owing to a bug in dbdma or some interaction between
54 * IDE and sound. However, this measure would deal with DEAD status if
55 * it appeared elsewhere.
57 static struct pmac_dbdma emergency_dbdma;
58 static int emergency_in_use;
62 * allocate DBDMA command arrays
64 static int snd_pmac_dbdma_alloc(struct snd_pmac *chip, struct pmac_dbdma *rec, int size)
66 unsigned int rsize = sizeof(struct dbdma_cmd) * (size + 1);
68 rec->space = dma_alloc_coherent(&chip->pdev->dev, rsize,
69 &rec->dma_base, GFP_KERNEL);
70 if (rec->space == NULL)
73 memset(rec->space, 0, rsize);
74 rec->cmds = (void __iomem *)DBDMA_ALIGN(rec->space);
75 rec->addr = rec->dma_base + (unsigned long)((char *)rec->cmds - (char *)rec->space);
80 static void snd_pmac_dbdma_free(struct snd_pmac *chip, struct pmac_dbdma *rec)
83 unsigned int rsize = sizeof(struct dbdma_cmd) * (rec->size + 1);
85 dma_free_coherent(&chip->pdev->dev, rsize, rec->space, rec->dma_base);
95 * look up frequency table
98 unsigned int snd_pmac_rate_index(struct snd_pmac *chip, struct pmac_stream *rec, unsigned int rate)
103 if (rate > chip->freq_table[0])
106 for (i = 0; i < chip->num_freqs; i++, ok >>= 1) {
107 if (! (ok & 1)) continue;
109 if (rate >= chip->freq_table[i])
116 * check whether another stream is active
118 static inline int another_stream(int stream)
120 return (stream == SNDRV_PCM_STREAM_PLAYBACK) ?
121 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
127 static int snd_pmac_pcm_hw_params(struct snd_pcm_substream *subs,
128 struct snd_pcm_hw_params *hw_params)
130 return snd_pcm_lib_malloc_pages(subs, params_buffer_bytes(hw_params));
136 static int snd_pmac_pcm_hw_free(struct snd_pcm_substream *subs)
138 snd_pcm_lib_free_pages(subs);
143 * get a stream of the opposite direction
145 static struct pmac_stream *snd_pmac_get_stream(struct snd_pmac *chip, int stream)
148 case SNDRV_PCM_STREAM_PLAYBACK:
149 return &chip->playback;
150 case SNDRV_PCM_STREAM_CAPTURE:
151 return &chip->capture;
159 * wait while run status is on
162 snd_pmac_wait_ack(struct pmac_stream *rec)
165 while ((in_le32(&rec->dma->status) & RUN) && timeout-- > 0)
170 * set the format and rate to the chip.
171 * call the lowlevel function if defined (e.g. for AWACS).
173 static void snd_pmac_pcm_set_format(struct snd_pmac *chip)
175 /* set up frequency and format */
176 out_le32(&chip->awacs->control, chip->control_mask | (chip->rate_index << 8));
177 out_le32(&chip->awacs->byteswap, chip->format == SNDRV_PCM_FORMAT_S16_LE ? 1 : 0);
178 if (chip->set_format)
179 chip->set_format(chip);
183 * stop the DMA transfer
185 static inline void snd_pmac_dma_stop(struct pmac_stream *rec)
187 out_le32(&rec->dma->control, (RUN|WAKE|FLUSH|PAUSE) << 16);
188 snd_pmac_wait_ack(rec);
192 * set the command pointer address
194 static inline void snd_pmac_dma_set_command(struct pmac_stream *rec, struct pmac_dbdma *cmd)
196 out_le32(&rec->dma->cmdptr, cmd->addr);
202 static inline void snd_pmac_dma_run(struct pmac_stream *rec, int status)
204 out_le32(&rec->dma->control, status | (status << 16));
209 * prepare playback/capture stream
211 static int snd_pmac_pcm_prepare(struct snd_pmac *chip, struct pmac_stream *rec, struct snd_pcm_substream *subs)
214 volatile struct dbdma_cmd __iomem *cp;
215 struct snd_pcm_runtime *runtime = subs->runtime;
218 struct pmac_stream *astr;
220 rec->dma_size = snd_pcm_lib_buffer_bytes(subs);
221 rec->period_size = snd_pcm_lib_period_bytes(subs);
222 rec->nperiods = rec->dma_size / rec->period_size;
224 rate_index = snd_pmac_rate_index(chip, rec, runtime->rate);
226 /* set up constraints */
227 astr = snd_pmac_get_stream(chip, another_stream(rec->stream));
230 astr->cur_freqs = 1 << rate_index;
231 astr->cur_formats = 1 << runtime->format;
232 chip->rate_index = rate_index;
233 chip->format = runtime->format;
235 /* We really want to execute a DMA stop command, after the AWACS
237 * For reasons I don't understand, it stops the hissing noise
238 * common to many PowerBook G3 systems and random noise otherwise
239 * captured on iBook2's about every third time. -ReneR
241 spin_lock_irq(&chip->reg_lock);
242 snd_pmac_dma_stop(rec);
243 st_le16(&chip->extra_dma.cmds->command, DBDMA_STOP);
244 snd_pmac_dma_set_command(rec, &chip->extra_dma);
245 snd_pmac_dma_run(rec, RUN);
246 spin_unlock_irq(&chip->reg_lock);
248 spin_lock_irq(&chip->reg_lock);
249 /* continuous DMA memory type doesn't provide the physical address,
250 * so we need to resolve the address here...
252 offset = runtime->dma_addr;
253 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) {
254 st_le32(&cp->phy_addr, offset);
255 st_le16(&cp->req_count, rec->period_size);
256 /*st_le16(&cp->res_count, 0);*/
257 st_le16(&cp->xfer_status, 0);
258 offset += rec->period_size;
261 st_le16(&cp->command, DBDMA_NOP + BR_ALWAYS);
262 st_le32(&cp->cmd_dep, rec->cmd.addr);
264 snd_pmac_dma_stop(rec);
265 snd_pmac_dma_set_command(rec, &rec->cmd);
266 spin_unlock_irq(&chip->reg_lock);
275 static int snd_pmac_pcm_trigger(struct snd_pmac *chip, struct pmac_stream *rec,
276 struct snd_pcm_substream *subs, int cmd)
278 volatile struct dbdma_cmd __iomem *cp;
282 case SNDRV_PCM_TRIGGER_START:
283 case SNDRV_PCM_TRIGGER_RESUME:
286 command = (subs->stream == SNDRV_PCM_STREAM_PLAYBACK ?
287 OUTPUT_MORE : INPUT_MORE) + INTR_ALWAYS;
288 spin_lock(&chip->reg_lock);
289 snd_pmac_beep_stop(chip);
290 snd_pmac_pcm_set_format(chip);
291 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++)
292 out_le16(&cp->command, command);
293 snd_pmac_dma_set_command(rec, &rec->cmd);
294 (void)in_le32(&rec->dma->status);
295 snd_pmac_dma_run(rec, RUN|WAKE);
297 spin_unlock(&chip->reg_lock);
300 case SNDRV_PCM_TRIGGER_STOP:
301 case SNDRV_PCM_TRIGGER_SUSPEND:
302 spin_lock(&chip->reg_lock);
304 /*printk(KERN_DEBUG "stopped!!\n");*/
305 snd_pmac_dma_stop(rec);
306 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++)
307 out_le16(&cp->command, DBDMA_STOP);
308 spin_unlock(&chip->reg_lock);
319 * return the current pointer
322 static snd_pcm_uframes_t snd_pmac_pcm_pointer(struct snd_pmac *chip,
323 struct pmac_stream *rec,
324 struct snd_pcm_substream *subs)
328 #if 1 /* hmm.. how can we get the current dma pointer?? */
330 volatile struct dbdma_cmd __iomem *cp = &rec->cmd.cmds[rec->cur_period];
331 stat = ld_le16(&cp->xfer_status);
332 if (stat & (ACTIVE|DEAD)) {
333 count = in_le16(&cp->res_count);
335 count = rec->period_size - count;
338 count += rec->cur_period * rec->period_size;
339 /*printk(KERN_DEBUG "pointer=%d\n", count);*/
340 return bytes_to_frames(subs->runtime, count);
347 static int snd_pmac_playback_prepare(struct snd_pcm_substream *subs)
349 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
350 return snd_pmac_pcm_prepare(chip, &chip->playback, subs);
353 static int snd_pmac_playback_trigger(struct snd_pcm_substream *subs,
356 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
357 return snd_pmac_pcm_trigger(chip, &chip->playback, subs, cmd);
360 static snd_pcm_uframes_t snd_pmac_playback_pointer(struct snd_pcm_substream *subs)
362 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
363 return snd_pmac_pcm_pointer(chip, &chip->playback, subs);
371 static int snd_pmac_capture_prepare(struct snd_pcm_substream *subs)
373 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
374 return snd_pmac_pcm_prepare(chip, &chip->capture, subs);
377 static int snd_pmac_capture_trigger(struct snd_pcm_substream *subs,
380 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
381 return snd_pmac_pcm_trigger(chip, &chip->capture, subs, cmd);
384 static snd_pcm_uframes_t snd_pmac_capture_pointer(struct snd_pcm_substream *subs)
386 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
387 return snd_pmac_pcm_pointer(chip, &chip->capture, subs);
392 * Handle DEAD DMA transfers:
393 * if the TX status comes up "DEAD" - reported on some Power Computing machines
394 * we need to re-start the dbdma - but from a different physical start address
395 * and with a different transfer length. It would get very messy to do this
396 * with the normal dbdma_cmd blocks - we would have to re-write the buffer start
397 * addresses each time. So, we will keep a single dbdma_cmd block which can be
399 * When DEAD status is first reported the content of the faulted dbdma block is
400 * copied into the emergency buffer and we note that the buffer is in use.
401 * we then bump the start physical address by the amount that was successfully
402 * output before it died.
403 * On any subsequent DEAD result we just do the bump-ups (we know that we are
404 * already using the emergency dbdma_cmd).
405 * CHECK: this just tries to "do it". It is possible that we should abandon
406 * xfers when the number of residual bytes gets below a certain value - I can
407 * see that this might cause a loop-forever if a too small transfer causes
408 * DEAD status. However this is a TODO for now - we'll see what gets reported.
409 * When we get a successful transfer result with the emergency buffer we just
410 * pretend that it completed using the original dmdma_cmd and carry on. The
411 * 'next_cmd' field will already point back to the original loop of blocks.
413 static inline void snd_pmac_pcm_dead_xfer(struct pmac_stream *rec,
414 volatile struct dbdma_cmd __iomem *cp)
416 unsigned short req, res ;
419 /* printk(KERN_WARNING "snd-powermac: DMA died - patching it up!\n"); */
421 /* to clear DEAD status we must first clear RUN
422 set it to quiescent to be on the safe side */
423 (void)in_le32(&rec->dma->status);
424 out_le32(&rec->dma->control, (RUN|PAUSE|FLUSH|WAKE) << 16);
426 if (!emergency_in_use) { /* new problem */
427 memcpy((void *)emergency_dbdma.cmds, (void *)cp,
428 sizeof(struct dbdma_cmd));
429 emergency_in_use = 1;
430 st_le16(&cp->xfer_status, 0);
431 st_le16(&cp->req_count, rec->period_size);
432 cp = emergency_dbdma.cmds;
435 /* now bump the values to reflect the amount
436 we haven't yet shifted */
437 req = ld_le16(&cp->req_count);
438 res = ld_le16(&cp->res_count);
439 phy = ld_le32(&cp->phy_addr);
441 st_le16(&cp->req_count, res);
442 st_le16(&cp->res_count, 0);
443 st_le16(&cp->xfer_status, 0);
444 st_le32(&cp->phy_addr, phy);
446 st_le32(&cp->cmd_dep, rec->cmd.addr
447 + sizeof(struct dbdma_cmd)*((rec->cur_period+1)%rec->nperiods));
449 st_le16(&cp->command, OUTPUT_MORE | BR_ALWAYS | INTR_ALWAYS);
451 /* point at our patched up command block */
452 out_le32(&rec->dma->cmdptr, emergency_dbdma.addr);
454 /* we must re-start the controller */
455 (void)in_le32(&rec->dma->status);
456 /* should complete clearing the DEAD status */
457 out_le32(&rec->dma->control, ((RUN|WAKE) << 16) + (RUN|WAKE));
461 * update playback/capture pointer from interrupts
463 static void snd_pmac_pcm_update(struct snd_pmac *chip, struct pmac_stream *rec)
465 volatile struct dbdma_cmd __iomem *cp;
469 spin_lock(&chip->reg_lock);
471 for (c = 0; c < rec->nperiods; c++) { /* at most all fragments */
473 if (emergency_in_use) /* already using DEAD xfer? */
474 cp = emergency_dbdma.cmds;
476 cp = &rec->cmd.cmds[rec->cur_period];
478 stat = ld_le16(&cp->xfer_status);
481 snd_pmac_pcm_dead_xfer(rec, cp);
482 break; /* this block is still going */
485 if (emergency_in_use)
486 emergency_in_use = 0 ; /* done that */
488 if (! (stat & ACTIVE))
491 /*printk(KERN_DEBUG "update frag %d\n", rec->cur_period);*/
492 st_le16(&cp->xfer_status, 0);
493 st_le16(&cp->req_count, rec->period_size);
494 /*st_le16(&cp->res_count, 0);*/
496 if (rec->cur_period >= rec->nperiods) {
500 spin_unlock(&chip->reg_lock);
501 snd_pcm_period_elapsed(rec->substream);
502 spin_lock(&chip->reg_lock);
505 spin_unlock(&chip->reg_lock);
513 static struct snd_pcm_hardware snd_pmac_playback =
515 .info = (SNDRV_PCM_INFO_INTERLEAVED |
516 SNDRV_PCM_INFO_MMAP |
517 SNDRV_PCM_INFO_MMAP_VALID |
518 SNDRV_PCM_INFO_RESUME),
519 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE,
520 .rates = SNDRV_PCM_RATE_8000_44100,
525 .buffer_bytes_max = 131072,
526 .period_bytes_min = 256,
527 .period_bytes_max = 16384,
529 .periods_max = PMAC_MAX_FRAGS,
532 static struct snd_pcm_hardware snd_pmac_capture =
534 .info = (SNDRV_PCM_INFO_INTERLEAVED |
535 SNDRV_PCM_INFO_MMAP |
536 SNDRV_PCM_INFO_MMAP_VALID |
537 SNDRV_PCM_INFO_RESUME),
538 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE,
539 .rates = SNDRV_PCM_RATE_8000_44100,
544 .buffer_bytes_max = 131072,
545 .period_bytes_min = 256,
546 .period_bytes_max = 16384,
548 .periods_max = PMAC_MAX_FRAGS,
553 static int snd_pmac_hw_rule_rate(struct snd_pcm_hw_params *params,
554 struct snd_pcm_hw_rule *rule)
556 struct snd_pmac *chip = rule->private;
557 struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]);
558 int i, freq_table[8], num_freqs;
563 for (i = chip->num_freqs - 1; i >= 0; i--) {
564 if (rec->cur_freqs & (1 << i))
565 freq_table[num_freqs++] = chip->freq_table[i];
568 return snd_interval_list(hw_param_interval(params, rule->var),
569 num_freqs, freq_table, 0);
572 static int snd_pmac_hw_rule_format(struct snd_pcm_hw_params *params,
573 struct snd_pcm_hw_rule *rule)
575 struct snd_pmac *chip = rule->private;
576 struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]);
580 return snd_mask_refine_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT),
585 static int snd_pmac_pcm_open(struct snd_pmac *chip, struct pmac_stream *rec,
586 struct snd_pcm_substream *subs)
588 struct snd_pcm_runtime *runtime = subs->runtime;
591 /* look up frequency table and fill bit mask */
592 runtime->hw.rates = 0;
593 for (i = 0; i < chip->num_freqs; i++)
594 if (chip->freqs_ok & (1 << i))
596 snd_pcm_rate_to_rate_bit(chip->freq_table[i]);
598 /* check for minimum and maximum rates */
599 for (i = 0; i < chip->num_freqs; i++) {
600 if (chip->freqs_ok & (1 << i)) {
601 runtime->hw.rate_max = chip->freq_table[i];
605 for (i = chip->num_freqs - 1; i >= 0; i--) {
606 if (chip->freqs_ok & (1 << i)) {
607 runtime->hw.rate_min = chip->freq_table[i];
611 runtime->hw.formats = chip->formats_ok;
612 if (chip->can_capture) {
613 if (! chip->can_duplex)
614 runtime->hw.info |= SNDRV_PCM_INFO_HALF_DUPLEX;
615 runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
617 runtime->private_data = rec;
618 rec->substream = subs;
620 #if 0 /* FIXME: still under development.. */
621 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
622 snd_pmac_hw_rule_rate, chip, rec->stream, -1);
623 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT,
624 snd_pmac_hw_rule_format, chip, rec->stream, -1);
627 runtime->hw.periods_max = rec->cmd.size - 1;
629 /* constraints to fix choppy sound */
630 snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
634 static int snd_pmac_pcm_close(struct snd_pmac *chip, struct pmac_stream *rec,
635 struct snd_pcm_substream *subs)
637 struct pmac_stream *astr;
639 snd_pmac_dma_stop(rec);
641 astr = snd_pmac_get_stream(chip, another_stream(rec->stream));
645 /* reset constraints */
646 astr->cur_freqs = chip->freqs_ok;
647 astr->cur_formats = chip->formats_ok;
652 static int snd_pmac_playback_open(struct snd_pcm_substream *subs)
654 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
656 subs->runtime->hw = snd_pmac_playback;
657 return snd_pmac_pcm_open(chip, &chip->playback, subs);
660 static int snd_pmac_capture_open(struct snd_pcm_substream *subs)
662 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
664 subs->runtime->hw = snd_pmac_capture;
665 return snd_pmac_pcm_open(chip, &chip->capture, subs);
668 static int snd_pmac_playback_close(struct snd_pcm_substream *subs)
670 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
672 return snd_pmac_pcm_close(chip, &chip->playback, subs);
675 static int snd_pmac_capture_close(struct snd_pcm_substream *subs)
677 struct snd_pmac *chip = snd_pcm_substream_chip(subs);
679 return snd_pmac_pcm_close(chip, &chip->capture, subs);
685 static struct snd_pcm_ops snd_pmac_playback_ops = {
686 .open = snd_pmac_playback_open,
687 .close = snd_pmac_playback_close,
688 .ioctl = snd_pcm_lib_ioctl,
689 .hw_params = snd_pmac_pcm_hw_params,
690 .hw_free = snd_pmac_pcm_hw_free,
691 .prepare = snd_pmac_playback_prepare,
692 .trigger = snd_pmac_playback_trigger,
693 .pointer = snd_pmac_playback_pointer,
696 static struct snd_pcm_ops snd_pmac_capture_ops = {
697 .open = snd_pmac_capture_open,
698 .close = snd_pmac_capture_close,
699 .ioctl = snd_pcm_lib_ioctl,
700 .hw_params = snd_pmac_pcm_hw_params,
701 .hw_free = snd_pmac_pcm_hw_free,
702 .prepare = snd_pmac_capture_prepare,
703 .trigger = snd_pmac_capture_trigger,
704 .pointer = snd_pmac_capture_pointer,
707 int snd_pmac_pcm_new(struct snd_pmac *chip)
711 int num_captures = 1;
713 if (! chip->can_capture)
715 err = snd_pcm_new(chip->card, chip->card->driver, 0, 1, num_captures, &pcm);
719 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_pmac_playback_ops);
720 if (chip->can_capture)
721 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_pmac_capture_ops);
723 pcm->private_data = chip;
724 pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
725 strcpy(pcm->name, chip->card->shortname);
728 chip->formats_ok = SNDRV_PCM_FMTBIT_S16_BE;
729 if (chip->can_byte_swap)
730 chip->formats_ok |= SNDRV_PCM_FMTBIT_S16_LE;
732 chip->playback.cur_formats = chip->formats_ok;
733 chip->capture.cur_formats = chip->formats_ok;
734 chip->playback.cur_freqs = chip->freqs_ok;
735 chip->capture.cur_freqs = chip->freqs_ok;
737 /* preallocate 64k buffer */
738 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
740 64 * 1024, 64 * 1024);
746 static void snd_pmac_dbdma_reset(struct snd_pmac *chip)
748 out_le32(&chip->playback.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
749 snd_pmac_wait_ack(&chip->playback);
750 out_le32(&chip->capture.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
751 snd_pmac_wait_ack(&chip->capture);
758 void snd_pmac_beep_dma_start(struct snd_pmac *chip, int bytes, unsigned long addr, int speed)
760 struct pmac_stream *rec = &chip->playback;
762 snd_pmac_dma_stop(rec);
763 st_le16(&chip->extra_dma.cmds->req_count, bytes);
764 st_le16(&chip->extra_dma.cmds->xfer_status, 0);
765 st_le32(&chip->extra_dma.cmds->cmd_dep, chip->extra_dma.addr);
766 st_le32(&chip->extra_dma.cmds->phy_addr, addr);
767 st_le16(&chip->extra_dma.cmds->command, OUTPUT_MORE + BR_ALWAYS);
768 out_le32(&chip->awacs->control,
769 (in_le32(&chip->awacs->control) & ~0x1f00)
771 out_le32(&chip->awacs->byteswap, 0);
772 snd_pmac_dma_set_command(rec, &chip->extra_dma);
773 snd_pmac_dma_run(rec, RUN);
776 void snd_pmac_beep_dma_stop(struct snd_pmac *chip)
778 snd_pmac_dma_stop(&chip->playback);
779 st_le16(&chip->extra_dma.cmds->command, DBDMA_STOP);
780 snd_pmac_pcm_set_format(chip); /* reset format */
788 snd_pmac_tx_intr(int irq, void *devid)
790 struct snd_pmac *chip = devid;
791 snd_pmac_pcm_update(chip, &chip->playback);
797 snd_pmac_rx_intr(int irq, void *devid)
799 struct snd_pmac *chip = devid;
800 snd_pmac_pcm_update(chip, &chip->capture);
806 snd_pmac_ctrl_intr(int irq, void *devid)
808 struct snd_pmac *chip = devid;
809 int ctrl = in_le32(&chip->awacs->control);
811 /*printk(KERN_DEBUG "pmac: control interrupt.. 0x%x\n", ctrl);*/
812 if (ctrl & MASK_PORTCHG) {
813 /* do something when headphone is plugged/unplugged? */
814 if (chip->update_automute)
815 chip->update_automute(chip, 1);
817 if (ctrl & MASK_CNTLERR) {
818 int err = (in_le32(&chip->awacs->codec_stat) & MASK_ERRCODE) >> 16;
819 if (err && chip->model <= PMAC_SCREAMER)
820 snd_printk(KERN_DEBUG "error %x\n", err);
822 /* Writing 1s to the CNTLERR and PORTCHG bits clears them... */
823 out_le32(&chip->awacs->control, ctrl);
829 * a wrapper to feature call for compatibility
831 static void snd_pmac_sound_feature(struct snd_pmac *chip, int enable)
833 if (ppc_md.feature_call)
834 ppc_md.feature_call(PMAC_FTR_SOUND_CHIP_ENABLE, chip->node, 0, enable);
841 static int snd_pmac_free(struct snd_pmac *chip)
844 if (chip->initialized) {
845 snd_pmac_dbdma_reset(chip);
846 /* disable interrupts from awacs interface */
847 out_le32(&chip->awacs->control, in_le32(&chip->awacs->control) & 0xfff);
851 snd_pmac_sound_feature(chip, 0);
853 /* clean up mixer if any */
854 if (chip->mixer_free)
855 chip->mixer_free(chip);
857 snd_pmac_detach_beep(chip);
859 /* release resources */
861 free_irq(chip->irq, (void*)chip);
862 if (chip->tx_irq >= 0)
863 free_irq(chip->tx_irq, (void*)chip);
864 if (chip->rx_irq >= 0)
865 free_irq(chip->rx_irq, (void*)chip);
866 snd_pmac_dbdma_free(chip, &chip->playback.cmd);
867 snd_pmac_dbdma_free(chip, &chip->capture.cmd);
868 snd_pmac_dbdma_free(chip, &chip->extra_dma);
869 snd_pmac_dbdma_free(chip, &emergency_dbdma);
870 if (chip->macio_base)
871 iounmap(chip->macio_base);
872 if (chip->latch_base)
873 iounmap(chip->latch_base);
875 iounmap(chip->awacs);
876 if (chip->playback.dma)
877 iounmap(chip->playback.dma);
878 if (chip->capture.dma)
879 iounmap(chip->capture.dma);
883 for (i = 0; i < 3; i++) {
884 if (chip->requested & (1 << i))
885 release_mem_region(chip->rsrc[i].start,
886 resource_size(&chip->rsrc[i]));
890 pci_dev_put(chip->pdev);
891 of_node_put(chip->node);
900 static int snd_pmac_dev_free(struct snd_device *device)
902 struct snd_pmac *chip = device->device_data;
903 return snd_pmac_free(chip);
908 * check the machine support byteswap (little-endian)
911 static void detect_byte_swap(struct snd_pmac *chip)
913 struct device_node *mio;
915 /* if seems that Keylargo can't byte-swap */
916 for (mio = chip->node->parent; mio; mio = mio->parent) {
917 if (strcmp(mio->name, "mac-io") == 0) {
918 if (of_device_is_compatible(mio, "Keylargo"))
919 chip->can_byte_swap = 0;
924 /* it seems the Pismo & iBook can't byte-swap in hardware. */
925 if (of_machine_is_compatible("PowerBook3,1") ||
926 of_machine_is_compatible("PowerBook2,1"))
927 chip->can_byte_swap = 0 ;
929 if (of_machine_is_compatible("PowerBook2,1"))
930 chip->can_duplex = 0;
935 * detect a sound chip
937 static int snd_pmac_detect(struct snd_pmac *chip)
939 struct device_node *sound;
940 struct device_node *dn;
941 const unsigned int *prop;
943 struct macio_chip* macio;
945 if (!machine_is(powermac))
950 chip->freqs_ok = 0xff; /* all ok */
951 chip->model = PMAC_AWACS;
952 chip->can_byte_swap = 1;
953 chip->can_duplex = 1;
954 chip->can_capture = 1;
955 chip->num_freqs = ARRAY_SIZE(awacs_freqs);
956 chip->freq_table = awacs_freqs;
959 chip->control_mask = MASK_IEPC | MASK_IEE | 0x11; /* default */
961 /* check machine type */
962 if (of_machine_is_compatible("AAPL,3400/2400")
963 || of_machine_is_compatible("AAPL,3500"))
964 chip->is_pbook_3400 = 1;
965 else if (of_machine_is_compatible("PowerBook1,1")
966 || of_machine_is_compatible("AAPL,PowerBook1998"))
967 chip->is_pbook_G3 = 1;
968 chip->node = of_find_node_by_name(NULL, "awacs");
969 sound = of_node_get(chip->node);
972 * powermac G3 models have a node called "davbus"
973 * with a child called "sound".
976 chip->node = of_find_node_by_name(NULL, "davbus");
978 * if we didn't find a davbus device, try 'i2s-a' since
979 * this seems to be what iBooks have
982 chip->node = of_find_node_by_name(NULL, "i2s-a");
983 if (chip->node && chip->node->parent &&
984 chip->node->parent->parent) {
985 if (of_device_is_compatible(chip->node->parent->parent,
994 for_each_node_by_name(sound, "sound")
995 if (sound->parent == chip->node)
999 of_node_put(chip->node);
1003 prop = of_get_property(sound, "sub-frame", NULL);
1004 if (prop && *prop < 16)
1005 chip->subframe = *prop;
1006 prop = of_get_property(sound, "layout-id", NULL);
1008 /* partly deprecate snd-powermac, for those machines
1009 * that have a layout-id property for now */
1010 printk(KERN_INFO "snd-powermac no longer handles any "
1011 "machines with a layout-id property "
1012 "in the device-tree, use snd-aoa.\n");
1014 of_node_put(chip->node);
1018 /* This should be verified on older screamers */
1019 if (of_device_is_compatible(sound, "screamer")) {
1020 chip->model = PMAC_SCREAMER;
1021 // chip->can_byte_swap = 0; /* FIXME: check this */
1023 if (of_device_is_compatible(sound, "burgundy")) {
1024 chip->model = PMAC_BURGUNDY;
1025 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
1027 if (of_device_is_compatible(sound, "daca")) {
1028 chip->model = PMAC_DACA;
1029 chip->can_capture = 0; /* no capture */
1030 chip->can_duplex = 0;
1031 // chip->can_byte_swap = 0; /* FIXME: check this */
1032 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
1034 if (of_device_is_compatible(sound, "tumbler")) {
1035 chip->model = PMAC_TUMBLER;
1036 chip->can_capture = of_machine_is_compatible("PowerMac4,2")
1037 || of_machine_is_compatible("PowerBook3,2")
1038 || of_machine_is_compatible("PowerBook3,3")
1039 || of_machine_is_compatible("PowerBook4,1")
1040 || of_machine_is_compatible("PowerBook4,2")
1041 || of_machine_is_compatible("PowerBook4,3");
1042 chip->can_duplex = 0;
1043 // chip->can_byte_swap = 0; /* FIXME: check this */
1044 chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
1045 chip->freq_table = tumbler_freqs;
1046 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
1048 if (of_device_is_compatible(sound, "snapper")) {
1049 chip->model = PMAC_SNAPPER;
1050 // chip->can_byte_swap = 0; /* FIXME: check this */
1051 chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
1052 chip->freq_table = tumbler_freqs;
1053 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
1055 prop = of_get_property(sound, "device-id", NULL);
1057 chip->device_id = *prop;
1058 dn = of_find_node_by_name(NULL, "perch");
1059 chip->has_iic = (dn != NULL);
1062 /* We need the PCI device for DMA allocations, let's use a crude method
1065 macio = macio_find(chip->node, macio_unknown);
1067 printk(KERN_WARNING "snd-powermac: can't locate macio !\n");
1069 struct pci_dev *pdev = NULL;
1071 for_each_pci_dev(pdev) {
1072 struct device_node *np = pci_device_to_OF_node(pdev);
1073 if (np && np == macio->of_node) {
1079 if (chip->pdev == NULL)
1080 printk(KERN_WARNING "snd-powermac: can't locate macio PCI"
1083 detect_byte_swap(chip);
1085 /* look for a property saying what sample rates
1087 prop = of_get_property(sound, "sample-rates", &l);
1089 prop = of_get_property(sound, "output-frame-rates", &l);
1093 for (l /= sizeof(int); l > 0; --l) {
1094 unsigned int r = *prop++;
1095 /* Apple 'Fixed' format */
1098 for (i = 0; i < chip->num_freqs; ++i) {
1099 if (r == chip->freq_table[i]) {
1100 chip->freqs_ok |= (1 << i);
1106 /* assume only 44.1khz */
1114 #ifdef PMAC_SUPPORT_AUTOMUTE
1118 static int pmac_auto_mute_get(struct snd_kcontrol *kcontrol,
1119 struct snd_ctl_elem_value *ucontrol)
1121 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1122 ucontrol->value.integer.value[0] = chip->auto_mute;
1126 static int pmac_auto_mute_put(struct snd_kcontrol *kcontrol,
1127 struct snd_ctl_elem_value *ucontrol)
1129 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1130 if (ucontrol->value.integer.value[0] != chip->auto_mute) {
1131 chip->auto_mute = !!ucontrol->value.integer.value[0];
1132 if (chip->update_automute)
1133 chip->update_automute(chip, 1);
1139 static int pmac_hp_detect_get(struct snd_kcontrol *kcontrol,
1140 struct snd_ctl_elem_value *ucontrol)
1142 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1143 if (chip->detect_headphone)
1144 ucontrol->value.integer.value[0] = chip->detect_headphone(chip);
1146 ucontrol->value.integer.value[0] = 0;
1150 static struct snd_kcontrol_new auto_mute_controls[] = {
1151 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1152 .name = "Auto Mute Switch",
1153 .info = snd_pmac_boolean_mono_info,
1154 .get = pmac_auto_mute_get,
1155 .put = pmac_auto_mute_put,
1157 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1158 .name = "Headphone Detection",
1159 .access = SNDRV_CTL_ELEM_ACCESS_READ,
1160 .info = snd_pmac_boolean_mono_info,
1161 .get = pmac_hp_detect_get,
1165 int snd_pmac_add_automute(struct snd_pmac *chip)
1168 chip->auto_mute = 1;
1169 err = snd_ctl_add(chip->card, snd_ctl_new1(&auto_mute_controls[0], chip));
1171 printk(KERN_ERR "snd-powermac: Failed to add automute control\n");
1174 chip->hp_detect_ctl = snd_ctl_new1(&auto_mute_controls[1], chip);
1175 return snd_ctl_add(chip->card, chip->hp_detect_ctl);
1177 #endif /* PMAC_SUPPORT_AUTOMUTE */
1180 * create and detect a pmac chip record
1182 int snd_pmac_new(struct snd_card *card, struct snd_pmac **chip_return)
1184 struct snd_pmac *chip;
1185 struct device_node *np;
1188 unsigned long ctrl_addr, txdma_addr, rxdma_addr;
1189 static struct snd_device_ops ops = {
1190 .dev_free = snd_pmac_dev_free,
1193 *chip_return = NULL;
1195 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1200 spin_lock_init(&chip->reg_lock);
1201 chip->irq = chip->tx_irq = chip->rx_irq = -1;
1203 chip->playback.stream = SNDRV_PCM_STREAM_PLAYBACK;
1204 chip->capture.stream = SNDRV_PCM_STREAM_CAPTURE;
1206 if ((err = snd_pmac_detect(chip)) < 0)
1209 if (snd_pmac_dbdma_alloc(chip, &chip->playback.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
1210 snd_pmac_dbdma_alloc(chip, &chip->capture.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
1211 snd_pmac_dbdma_alloc(chip, &chip->extra_dma, 2) < 0 ||
1212 snd_pmac_dbdma_alloc(chip, &emergency_dbdma, 2) < 0) {
1218 chip->requested = 0;
1220 static char *rnames[] = {
1221 "Sound Control", "Sound DMA" };
1222 for (i = 0; i < 2; i ++) {
1223 if (of_address_to_resource(np->parent, i,
1225 printk(KERN_ERR "snd: can't translate rsrc "
1226 " %d (%s)\n", i, rnames[i]);
1230 if (request_mem_region(chip->rsrc[i].start,
1231 resource_size(&chip->rsrc[i]),
1232 rnames[i]) == NULL) {
1233 printk(KERN_ERR "snd: can't request rsrc "
1235 i, rnames[i], &chip->rsrc[i]);
1239 chip->requested |= (1 << i);
1241 ctrl_addr = chip->rsrc[0].start;
1242 txdma_addr = chip->rsrc[1].start;
1243 rxdma_addr = txdma_addr + 0x100;
1245 static char *rnames[] = {
1246 "Sound Control", "Sound Tx DMA", "Sound Rx DMA" };
1247 for (i = 0; i < 3; i ++) {
1248 if (of_address_to_resource(np, i,
1250 printk(KERN_ERR "snd: can't translate rsrc "
1251 " %d (%s)\n", i, rnames[i]);
1255 if (request_mem_region(chip->rsrc[i].start,
1256 resource_size(&chip->rsrc[i]),
1257 rnames[i]) == NULL) {
1258 printk(KERN_ERR "snd: can't request rsrc "
1260 i, rnames[i], &chip->rsrc[i]);
1264 chip->requested |= (1 << i);
1266 ctrl_addr = chip->rsrc[0].start;
1267 txdma_addr = chip->rsrc[1].start;
1268 rxdma_addr = chip->rsrc[2].start;
1271 chip->awacs = ioremap(ctrl_addr, 0x1000);
1272 chip->playback.dma = ioremap(txdma_addr, 0x100);
1273 chip->capture.dma = ioremap(rxdma_addr, 0x100);
1274 if (chip->model <= PMAC_BURGUNDY) {
1275 irq = irq_of_parse_and_map(np, 0);
1276 if (request_irq(irq, snd_pmac_ctrl_intr, 0,
1277 "PMac", (void*)chip)) {
1278 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n",
1285 irq = irq_of_parse_and_map(np, 1);
1286 if (request_irq(irq, snd_pmac_tx_intr, 0, "PMac Output", (void*)chip)){
1287 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", irq);
1292 irq = irq_of_parse_and_map(np, 2);
1293 if (request_irq(irq, snd_pmac_rx_intr, 0, "PMac Input", (void*)chip)) {
1294 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", irq);
1300 snd_pmac_sound_feature(chip, 1);
1302 /* reset & enable interrupts */
1303 if (chip->model <= PMAC_BURGUNDY)
1304 out_le32(&chip->awacs->control, chip->control_mask);
1306 /* Powerbooks have odd ways of enabling inputs such as
1307 an expansion-bay CD or sound from an internal modem
1308 or a PC-card modem. */
1309 if (chip->is_pbook_3400) {
1310 /* Enable CD and PC-card sound inputs. */
1311 /* This is done by reading from address
1312 * f301a000, + 0x10 to enable the expansion-bay
1313 * CD sound input, + 0x80 to enable the PC-card
1314 * sound input. The 0x100 enables the SCSI bus
1317 chip->latch_base = ioremap (0xf301a000, 0x1000);
1318 in_8(chip->latch_base + 0x190);
1319 } else if (chip->is_pbook_G3) {
1320 struct device_node* mio;
1321 for (mio = chip->node->parent; mio; mio = mio->parent) {
1322 if (strcmp(mio->name, "mac-io") == 0) {
1324 if (of_address_to_resource(mio, 0, &r) == 0)
1326 ioremap(r.start, 0x40);
1330 /* Enable CD sound input. */
1331 /* The relevant bits for writing to this byte are 0x8f.
1332 * I haven't found out what the 0x80 bit does.
1333 * For the 0xf bits, writing 3 or 7 enables the CD
1334 * input, any other value disables it. Values
1335 * 1, 3, 5, 7 enable the microphone. Values 0, 2,
1336 * 4, 6, 8 - f enable the input from the modem.
1338 if (chip->macio_base)
1339 out_8(chip->macio_base + 0x37, 3);
1342 /* Reset dbdma channels */
1343 snd_pmac_dbdma_reset(chip);
1345 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
1348 *chip_return = chip;
1352 snd_pmac_free(chip);
1358 * sleep notify for powerbook
1364 * Save state when going to sleep, restore it afterwards.
1367 void snd_pmac_suspend(struct snd_pmac *chip)
1369 unsigned long flags;
1371 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
1373 chip->suspend(chip);
1374 snd_pcm_suspend_all(chip->pcm);
1375 spin_lock_irqsave(&chip->reg_lock, flags);
1376 snd_pmac_beep_stop(chip);
1377 spin_unlock_irqrestore(&chip->reg_lock, flags);
1379 disable_irq(chip->irq);
1380 if (chip->tx_irq >= 0)
1381 disable_irq(chip->tx_irq);
1382 if (chip->rx_irq >= 0)
1383 disable_irq(chip->rx_irq);
1384 snd_pmac_sound_feature(chip, 0);
1387 void snd_pmac_resume(struct snd_pmac *chip)
1389 snd_pmac_sound_feature(chip, 1);
1392 /* enable CD sound input */
1393 if (chip->macio_base && chip->is_pbook_G3)
1394 out_8(chip->macio_base + 0x37, 3);
1395 else if (chip->is_pbook_3400)
1396 in_8(chip->latch_base + 0x190);
1398 snd_pmac_pcm_set_format(chip);
1401 enable_irq(chip->irq);
1402 if (chip->tx_irq >= 0)
1403 enable_irq(chip->tx_irq);
1404 if (chip->rx_irq >= 0)
1405 enable_irq(chip->rx_irq);
1407 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
1410 #endif /* CONFIG_PM */