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25#include <linux/init.h>
26#include <linux/delay.h>
27#include <linux/spinlock.h>
28#include <linux/interrupt.h>
29#include <linux/dma-mapping.h>
30#include <linux/platform_device.h>
31#include <linux/io.h>
32#include <linux/slab.h>
33#include <linux/module.h>
34
35#include <asm/ip32/ip32_ints.h>
36#include <asm/ip32/mace.h>
37
38#include <sound/core.h>
39#include <sound/control.h>
40#include <sound/pcm.h>
41#define SNDRV_GET_ID
42#include <sound/initval.h>
43#include <sound/ad1843.h>
44
45
46MODULE_AUTHOR("Vivien Chappelier <vivien.chappelier@linux-mips.org>");
47MODULE_DESCRIPTION("SGI O2 Audio");
48MODULE_LICENSE("GPL");
49MODULE_SUPPORTED_DEVICE("{{Silicon Graphics, O2 Audio}}");
50
51static int index = SNDRV_DEFAULT_IDX1;
52static char *id = SNDRV_DEFAULT_STR1;
53
54module_param(index, int, 0444);
55MODULE_PARM_DESC(index, "Index value for SGI O2 soundcard.");
56module_param(id, charp, 0444);
57MODULE_PARM_DESC(id, "ID string for SGI O2 soundcard.");
58
59
60#define AUDIO_CONTROL_RESET BIT(0)
61#define AUDIO_CONTROL_CODEC_PRESENT BIT(1)
62
63#define CODEC_CONTROL_WORD_SHIFT 0
64#define CODEC_CONTROL_READ BIT(16)
65#define CODEC_CONTROL_ADDRESS_SHIFT 17
66
67#define CHANNEL_CONTROL_RESET BIT(10)
68#define CHANNEL_DMA_ENABLE BIT(9)
69#define CHANNEL_INT_THRESHOLD_DISABLED (0 << 5)
70#define CHANNEL_INT_THRESHOLD_25 (1 << 5)
71#define CHANNEL_INT_THRESHOLD_50 (2 << 5)
72#define CHANNEL_INT_THRESHOLD_75 (3 << 5)
73#define CHANNEL_INT_THRESHOLD_EMPTY (4 << 5)
74#define CHANNEL_INT_THRESHOLD_NOT_EMPTY (5 << 5)
75#define CHANNEL_INT_THRESHOLD_FULL (6 << 5)
76#define CHANNEL_INT_THRESHOLD_NOT_FULL (7 << 5)
77
78#define CHANNEL_RING_SHIFT 12
79#define CHANNEL_RING_SIZE (1 << CHANNEL_RING_SHIFT)
80#define CHANNEL_RING_MASK (CHANNEL_RING_SIZE - 1)
81
82#define CHANNEL_LEFT_SHIFT 40
83#define CHANNEL_RIGHT_SHIFT 8
84
85struct snd_sgio2audio_chan {
86 int idx;
87 struct snd_pcm_substream *substream;
88 int pos;
89 snd_pcm_uframes_t size;
90 spinlock_t lock;
91};
92
93
94struct snd_sgio2audio {
95 struct snd_card *card;
96
97
98 struct snd_ad1843 ad1843;
99 spinlock_t ad1843_lock;
100
101
102 struct snd_sgio2audio_chan channel[3];
103
104
105 void *ring_base;
106 dma_addr_t ring_base_dma;
107};
108
109
110
111
112
113
114
115
116static int read_ad1843_reg(void *priv, int reg)
117{
118 struct snd_sgio2audio *chip = priv;
119 int val;
120 unsigned long flags;
121
122 spin_lock_irqsave(&chip->ad1843_lock, flags);
123
124 writeq((reg << CODEC_CONTROL_ADDRESS_SHIFT) |
125 CODEC_CONTROL_READ, &mace->perif.audio.codec_control);
126 wmb();
127 val = readq(&mace->perif.audio.codec_control);
128 udelay(200);
129
130 val = readq(&mace->perif.audio.codec_read);
131
132 spin_unlock_irqrestore(&chip->ad1843_lock, flags);
133 return val;
134}
135
136
137
138
139static int write_ad1843_reg(void *priv, int reg, int word)
140{
141 struct snd_sgio2audio *chip = priv;
142 int val;
143 unsigned long flags;
144
145 spin_lock_irqsave(&chip->ad1843_lock, flags);
146
147 writeq((reg << CODEC_CONTROL_ADDRESS_SHIFT) |
148 (word << CODEC_CONTROL_WORD_SHIFT),
149 &mace->perif.audio.codec_control);
150 wmb();
151 val = readq(&mace->perif.audio.codec_control);
152 udelay(200);
153
154 spin_unlock_irqrestore(&chip->ad1843_lock, flags);
155 return 0;
156}
157
158static int sgio2audio_gain_info(struct snd_kcontrol *kcontrol,
159 struct snd_ctl_elem_info *uinfo)
160{
161 struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol);
162
163 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
164 uinfo->count = 2;
165 uinfo->value.integer.min = 0;
166 uinfo->value.integer.max = ad1843_get_gain_max(&chip->ad1843,
167 (int)kcontrol->private_value);
168 return 0;
169}
170
171static int sgio2audio_gain_get(struct snd_kcontrol *kcontrol,
172 struct snd_ctl_elem_value *ucontrol)
173{
174 struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol);
175 int vol;
176
177 vol = ad1843_get_gain(&chip->ad1843, (int)kcontrol->private_value);
178
179 ucontrol->value.integer.value[0] = (vol >> 8) & 0xFF;
180 ucontrol->value.integer.value[1] = vol & 0xFF;
181
182 return 0;
183}
184
185static int sgio2audio_gain_put(struct snd_kcontrol *kcontrol,
186 struct snd_ctl_elem_value *ucontrol)
187{
188 struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol);
189 int newvol, oldvol;
190
191 oldvol = ad1843_get_gain(&chip->ad1843, kcontrol->private_value);
192 newvol = (ucontrol->value.integer.value[0] << 8) |
193 ucontrol->value.integer.value[1];
194
195 newvol = ad1843_set_gain(&chip->ad1843, kcontrol->private_value,
196 newvol);
197
198 return newvol != oldvol;
199}
200
201static int sgio2audio_source_info(struct snd_kcontrol *kcontrol,
202 struct snd_ctl_elem_info *uinfo)
203{
204 static const char * const texts[3] = {
205 "Cam Mic", "Mic", "Line"
206 };
207 return snd_ctl_enum_info(uinfo, 1, 3, texts);
208}
209
210static int sgio2audio_source_get(struct snd_kcontrol *kcontrol,
211 struct snd_ctl_elem_value *ucontrol)
212{
213 struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol);
214
215 ucontrol->value.enumerated.item[0] = ad1843_get_recsrc(&chip->ad1843);
216 return 0;
217}
218
219static int sgio2audio_source_put(struct snd_kcontrol *kcontrol,
220 struct snd_ctl_elem_value *ucontrol)
221{
222 struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol);
223 int newsrc, oldsrc;
224
225 oldsrc = ad1843_get_recsrc(&chip->ad1843);
226 newsrc = ad1843_set_recsrc(&chip->ad1843,
227 ucontrol->value.enumerated.item[0]);
228
229 return newsrc != oldsrc;
230}
231
232
233static const struct snd_kcontrol_new sgio2audio_ctrl_pcm0 = {
234 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
235 .name = "PCM Playback Volume",
236 .index = 0,
237 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
238 .private_value = AD1843_GAIN_PCM_0,
239 .info = sgio2audio_gain_info,
240 .get = sgio2audio_gain_get,
241 .put = sgio2audio_gain_put,
242};
243
244
245static const struct snd_kcontrol_new sgio2audio_ctrl_pcm1 = {
246 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
247 .name = "PCM Playback Volume",
248 .index = 1,
249 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
250 .private_value = AD1843_GAIN_PCM_1,
251 .info = sgio2audio_gain_info,
252 .get = sgio2audio_gain_get,
253 .put = sgio2audio_gain_put,
254};
255
256
257static const struct snd_kcontrol_new sgio2audio_ctrl_reclevel = {
258 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
259 .name = "Capture Volume",
260 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
261 .private_value = AD1843_GAIN_RECLEV,
262 .info = sgio2audio_gain_info,
263 .get = sgio2audio_gain_get,
264 .put = sgio2audio_gain_put,
265};
266
267
268static const struct snd_kcontrol_new sgio2audio_ctrl_recsource = {
269 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
270 .name = "Capture Source",
271 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
272 .info = sgio2audio_source_info,
273 .get = sgio2audio_source_get,
274 .put = sgio2audio_source_put,
275};
276
277
278static const struct snd_kcontrol_new sgio2audio_ctrl_line = {
279 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
280 .name = "Line Playback Volume",
281 .index = 0,
282 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
283 .private_value = AD1843_GAIN_LINE,
284 .info = sgio2audio_gain_info,
285 .get = sgio2audio_gain_get,
286 .put = sgio2audio_gain_put,
287};
288
289
290static const struct snd_kcontrol_new sgio2audio_ctrl_cd = {
291 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
292 .name = "Line Playback Volume",
293 .index = 1,
294 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
295 .private_value = AD1843_GAIN_LINE_2,
296 .info = sgio2audio_gain_info,
297 .get = sgio2audio_gain_get,
298 .put = sgio2audio_gain_put,
299};
300
301
302static const struct snd_kcontrol_new sgio2audio_ctrl_mic = {
303 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
304 .name = "Mic Playback Volume",
305 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
306 .private_value = AD1843_GAIN_MIC,
307 .info = sgio2audio_gain_info,
308 .get = sgio2audio_gain_get,
309 .put = sgio2audio_gain_put,
310};
311
312
313static int snd_sgio2audio_new_mixer(struct snd_sgio2audio *chip)
314{
315 int err;
316
317 err = snd_ctl_add(chip->card,
318 snd_ctl_new1(&sgio2audio_ctrl_pcm0, chip));
319 if (err < 0)
320 return err;
321
322 err = snd_ctl_add(chip->card,
323 snd_ctl_new1(&sgio2audio_ctrl_pcm1, chip));
324 if (err < 0)
325 return err;
326
327 err = snd_ctl_add(chip->card,
328 snd_ctl_new1(&sgio2audio_ctrl_reclevel, chip));
329 if (err < 0)
330 return err;
331
332 err = snd_ctl_add(chip->card,
333 snd_ctl_new1(&sgio2audio_ctrl_recsource, chip));
334 if (err < 0)
335 return err;
336 err = snd_ctl_add(chip->card,
337 snd_ctl_new1(&sgio2audio_ctrl_line, chip));
338 if (err < 0)
339 return err;
340
341 err = snd_ctl_add(chip->card,
342 snd_ctl_new1(&sgio2audio_ctrl_cd, chip));
343 if (err < 0)
344 return err;
345
346 err = snd_ctl_add(chip->card,
347 snd_ctl_new1(&sgio2audio_ctrl_mic, chip));
348 if (err < 0)
349 return err;
350
351 return 0;
352}
353
354
355
356
357
358static int snd_sgio2audio_dma_pull_frag(struct snd_sgio2audio *chip,
359 unsigned int ch, unsigned int count)
360{
361 int ret;
362 unsigned long src_base, src_pos, dst_mask;
363 unsigned char *dst_base;
364 int dst_pos;
365 u64 *src;
366 s16 *dst;
367 u64 x;
368 unsigned long flags;
369 struct snd_pcm_runtime *runtime = chip->channel[ch].substream->runtime;
370
371 spin_lock_irqsave(&chip->channel[ch].lock, flags);
372
373 src_base = (unsigned long) chip->ring_base | (ch << CHANNEL_RING_SHIFT);
374 src_pos = readq(&mace->perif.audio.chan[ch].read_ptr);
375 dst_base = runtime->dma_area;
376 dst_pos = chip->channel[ch].pos;
377 dst_mask = frames_to_bytes(runtime, runtime->buffer_size) - 1;
378
379
380 chip->channel[ch].size += (count >> 3);
381 ret = chip->channel[ch].size >= runtime->period_size;
382 chip->channel[ch].size %= runtime->period_size;
383
384 while (count) {
385 src = (u64 *)(src_base + src_pos);
386 dst = (s16 *)(dst_base + dst_pos);
387
388 x = *src;
389 dst[0] = (x >> CHANNEL_LEFT_SHIFT) & 0xffff;
390 dst[1] = (x >> CHANNEL_RIGHT_SHIFT) & 0xffff;
391
392 src_pos = (src_pos + sizeof(u64)) & CHANNEL_RING_MASK;
393 dst_pos = (dst_pos + 2 * sizeof(s16)) & dst_mask;
394 count -= sizeof(u64);
395 }
396
397 writeq(src_pos, &mace->perif.audio.chan[ch].read_ptr);
398 chip->channel[ch].pos = dst_pos;
399
400 spin_unlock_irqrestore(&chip->channel[ch].lock, flags);
401 return ret;
402}
403
404
405
406static int snd_sgio2audio_dma_push_frag(struct snd_sgio2audio *chip,
407 unsigned int ch, unsigned int count)
408{
409 int ret;
410 s64 l, r;
411 unsigned long dst_base, dst_pos, src_mask;
412 unsigned char *src_base;
413 int src_pos;
414 u64 *dst;
415 s16 *src;
416 unsigned long flags;
417 struct snd_pcm_runtime *runtime = chip->channel[ch].substream->runtime;
418
419 spin_lock_irqsave(&chip->channel[ch].lock, flags);
420
421 dst_base = (unsigned long)chip->ring_base | (ch << CHANNEL_RING_SHIFT);
422 dst_pos = readq(&mace->perif.audio.chan[ch].write_ptr);
423 src_base = runtime->dma_area;
424 src_pos = chip->channel[ch].pos;
425 src_mask = frames_to_bytes(runtime, runtime->buffer_size) - 1;
426
427
428 chip->channel[ch].size += (count >> 3);
429 ret = chip->channel[ch].size >= runtime->period_size;
430 chip->channel[ch].size %= runtime->period_size;
431
432 while (count) {
433 src = (s16 *)(src_base + src_pos);
434 dst = (u64 *)(dst_base + dst_pos);
435
436 l = src[0];
437 r = src[1];
438
439 *dst = ((l & 0x00ffffff) << CHANNEL_LEFT_SHIFT) |
440 ((r & 0x00ffffff) << CHANNEL_RIGHT_SHIFT);
441
442 dst_pos = (dst_pos + sizeof(u64)) & CHANNEL_RING_MASK;
443 src_pos = (src_pos + 2 * sizeof(s16)) & src_mask;
444 count -= sizeof(u64);
445 }
446
447 writeq(dst_pos, &mace->perif.audio.chan[ch].write_ptr);
448 chip->channel[ch].pos = src_pos;
449
450 spin_unlock_irqrestore(&chip->channel[ch].lock, flags);
451 return ret;
452}
453
454static int snd_sgio2audio_dma_start(struct snd_pcm_substream *substream)
455{
456 struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream);
457 struct snd_sgio2audio_chan *chan = substream->runtime->private_data;
458 int ch = chan->idx;
459
460
461 writeq(CHANNEL_CONTROL_RESET, &mace->perif.audio.chan[ch].control);
462 udelay(10);
463 writeq(0, &mace->perif.audio.chan[ch].control);
464
465 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
466
467 snd_sgio2audio_dma_push_frag(chip, ch, CHANNEL_RING_SIZE - 32);
468 }
469
470 writeq(CHANNEL_DMA_ENABLE | CHANNEL_INT_THRESHOLD_50,
471 &mace->perif.audio.chan[ch].control);
472 return 0;
473}
474
475static int snd_sgio2audio_dma_stop(struct snd_pcm_substream *substream)
476{
477 struct snd_sgio2audio_chan *chan = substream->runtime->private_data;
478
479 writeq(0, &mace->perif.audio.chan[chan->idx].control);
480 return 0;
481}
482
483static irqreturn_t snd_sgio2audio_dma_in_isr(int irq, void *dev_id)
484{
485 struct snd_sgio2audio_chan *chan = dev_id;
486 struct snd_pcm_substream *substream;
487 struct snd_sgio2audio *chip;
488 int count, ch;
489
490 substream = chan->substream;
491 chip = snd_pcm_substream_chip(substream);
492 ch = chan->idx;
493
494
495 count = CHANNEL_RING_SIZE -
496 readq(&mace->perif.audio.chan[ch].depth) - 32;
497 if (snd_sgio2audio_dma_pull_frag(chip, ch, count))
498 snd_pcm_period_elapsed(substream);
499
500 return IRQ_HANDLED;
501}
502
503static irqreturn_t snd_sgio2audio_dma_out_isr(int irq, void *dev_id)
504{
505 struct snd_sgio2audio_chan *chan = dev_id;
506 struct snd_pcm_substream *substream;
507 struct snd_sgio2audio *chip;
508 int count, ch;
509
510 substream = chan->substream;
511 chip = snd_pcm_substream_chip(substream);
512 ch = chan->idx;
513
514 count = CHANNEL_RING_SIZE -
515 readq(&mace->perif.audio.chan[ch].depth) - 32;
516 if (snd_sgio2audio_dma_push_frag(chip, ch, count))
517 snd_pcm_period_elapsed(substream);
518
519 return IRQ_HANDLED;
520}
521
522static irqreturn_t snd_sgio2audio_error_isr(int irq, void *dev_id)
523{
524 struct snd_sgio2audio_chan *chan = dev_id;
525 struct snd_pcm_substream *substream;
526
527 substream = chan->substream;
528 snd_sgio2audio_dma_stop(substream);
529 snd_sgio2audio_dma_start(substream);
530 return IRQ_HANDLED;
531}
532
533
534
535static const struct snd_pcm_hardware snd_sgio2audio_pcm_hw = {
536 .info = (SNDRV_PCM_INFO_MMAP |
537 SNDRV_PCM_INFO_MMAP_VALID |
538 SNDRV_PCM_INFO_INTERLEAVED |
539 SNDRV_PCM_INFO_BLOCK_TRANSFER),
540 .formats = SNDRV_PCM_FMTBIT_S16_BE,
541 .rates = SNDRV_PCM_RATE_8000_48000,
542 .rate_min = 8000,
543 .rate_max = 48000,
544 .channels_min = 2,
545 .channels_max = 2,
546 .buffer_bytes_max = 65536,
547 .period_bytes_min = 32768,
548 .period_bytes_max = 65536,
549 .periods_min = 1,
550 .periods_max = 1024,
551};
552
553
554static int snd_sgio2audio_playback1_open(struct snd_pcm_substream *substream)
555{
556 struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream);
557 struct snd_pcm_runtime *runtime = substream->runtime;
558
559 runtime->hw = snd_sgio2audio_pcm_hw;
560 runtime->private_data = &chip->channel[1];
561 return 0;
562}
563
564static int snd_sgio2audio_playback2_open(struct snd_pcm_substream *substream)
565{
566 struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream);
567 struct snd_pcm_runtime *runtime = substream->runtime;
568
569 runtime->hw = snd_sgio2audio_pcm_hw;
570 runtime->private_data = &chip->channel[2];
571 return 0;
572}
573
574
575static int snd_sgio2audio_capture_open(struct snd_pcm_substream *substream)
576{
577 struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream);
578 struct snd_pcm_runtime *runtime = substream->runtime;
579
580 runtime->hw = snd_sgio2audio_pcm_hw;
581 runtime->private_data = &chip->channel[0];
582 return 0;
583}
584
585
586static int snd_sgio2audio_pcm_close(struct snd_pcm_substream *substream)
587{
588 struct snd_pcm_runtime *runtime = substream->runtime;
589
590 runtime->private_data = NULL;
591 return 0;
592}
593
594
595
596static int snd_sgio2audio_pcm_hw_params(struct snd_pcm_substream *substream,
597 struct snd_pcm_hw_params *hw_params)
598{
599 return snd_pcm_lib_alloc_vmalloc_buffer(substream,
600 params_buffer_bytes(hw_params));
601}
602
603
604static int snd_sgio2audio_pcm_hw_free(struct snd_pcm_substream *substream)
605{
606 return snd_pcm_lib_free_vmalloc_buffer(substream);
607}
608
609
610static int snd_sgio2audio_pcm_prepare(struct snd_pcm_substream *substream)
611{
612 struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream);
613 struct snd_pcm_runtime *runtime = substream->runtime;
614 struct snd_sgio2audio_chan *chan = substream->runtime->private_data;
615 int ch = chan->idx;
616 unsigned long flags;
617
618 spin_lock_irqsave(&chip->channel[ch].lock, flags);
619
620
621 chip->channel[ch].pos = 0;
622 chip->channel[ch].size = 0;
623 chip->channel[ch].substream = substream;
624
625
626
627 switch (substream->stream) {
628 case SNDRV_PCM_STREAM_PLAYBACK:
629 ad1843_setup_dac(&chip->ad1843,
630 ch - 1,
631 runtime->rate,
632 SNDRV_PCM_FORMAT_S16_LE,
633 runtime->channels);
634 break;
635 case SNDRV_PCM_STREAM_CAPTURE:
636 ad1843_setup_adc(&chip->ad1843,
637 runtime->rate,
638 SNDRV_PCM_FORMAT_S16_LE,
639 runtime->channels);
640 break;
641 }
642 spin_unlock_irqrestore(&chip->channel[ch].lock, flags);
643 return 0;
644}
645
646
647static int snd_sgio2audio_pcm_trigger(struct snd_pcm_substream *substream,
648 int cmd)
649{
650 switch (cmd) {
651 case SNDRV_PCM_TRIGGER_START:
652
653 snd_sgio2audio_dma_start(substream);
654 break;
655 case SNDRV_PCM_TRIGGER_STOP:
656
657 snd_sgio2audio_dma_stop(substream);
658 break;
659 default:
660 return -EINVAL;
661 }
662 return 0;
663}
664
665
666static snd_pcm_uframes_t
667snd_sgio2audio_pcm_pointer(struct snd_pcm_substream *substream)
668{
669 struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream);
670 struct snd_sgio2audio_chan *chan = substream->runtime->private_data;
671
672
673 return bytes_to_frames(substream->runtime,
674 chip->channel[chan->idx].pos);
675}
676
677
678static const struct snd_pcm_ops snd_sgio2audio_playback1_ops = {
679 .open = snd_sgio2audio_playback1_open,
680 .close = snd_sgio2audio_pcm_close,
681 .ioctl = snd_pcm_lib_ioctl,
682 .hw_params = snd_sgio2audio_pcm_hw_params,
683 .hw_free = snd_sgio2audio_pcm_hw_free,
684 .prepare = snd_sgio2audio_pcm_prepare,
685 .trigger = snd_sgio2audio_pcm_trigger,
686 .pointer = snd_sgio2audio_pcm_pointer,
687 .page = snd_pcm_lib_get_vmalloc_page,
688};
689
690static const struct snd_pcm_ops snd_sgio2audio_playback2_ops = {
691 .open = snd_sgio2audio_playback2_open,
692 .close = snd_sgio2audio_pcm_close,
693 .ioctl = snd_pcm_lib_ioctl,
694 .hw_params = snd_sgio2audio_pcm_hw_params,
695 .hw_free = snd_sgio2audio_pcm_hw_free,
696 .prepare = snd_sgio2audio_pcm_prepare,
697 .trigger = snd_sgio2audio_pcm_trigger,
698 .pointer = snd_sgio2audio_pcm_pointer,
699 .page = snd_pcm_lib_get_vmalloc_page,
700};
701
702static const struct snd_pcm_ops snd_sgio2audio_capture_ops = {
703 .open = snd_sgio2audio_capture_open,
704 .close = snd_sgio2audio_pcm_close,
705 .ioctl = snd_pcm_lib_ioctl,
706 .hw_params = snd_sgio2audio_pcm_hw_params,
707 .hw_free = snd_sgio2audio_pcm_hw_free,
708 .prepare = snd_sgio2audio_pcm_prepare,
709 .trigger = snd_sgio2audio_pcm_trigger,
710 .pointer = snd_sgio2audio_pcm_pointer,
711 .page = snd_pcm_lib_get_vmalloc_page,
712};
713
714
715
716
717
718
719static int snd_sgio2audio_new_pcm(struct snd_sgio2audio *chip)
720{
721 struct snd_pcm *pcm;
722 int err;
723
724
725 err = snd_pcm_new(chip->card, "SGI O2 Audio", 0, 1, 1, &pcm);
726 if (err < 0)
727 return err;
728
729 pcm->private_data = chip;
730 strcpy(pcm->name, "SGI O2 DAC1");
731
732
733 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
734 &snd_sgio2audio_playback1_ops);
735 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
736 &snd_sgio2audio_capture_ops);
737
738
739 err = snd_pcm_new(chip->card, "SGI O2 Audio", 1, 1, 0, &pcm);
740 if (err < 0)
741 return err;
742
743 pcm->private_data = chip;
744 strcpy(pcm->name, "SGI O2 DAC2");
745
746
747 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
748 &snd_sgio2audio_playback2_ops);
749
750 return 0;
751}
752
753static struct {
754 int idx;
755 int irq;
756 irqreturn_t (*isr)(int, void *);
757 const char *desc;
758} snd_sgio2_isr_table[] = {
759 {
760 .idx = 0,
761 .irq = MACEISA_AUDIO1_DMAT_IRQ,
762 .isr = snd_sgio2audio_dma_in_isr,
763 .desc = "Capture DMA Channel 0"
764 }, {
765 .idx = 0,
766 .irq = MACEISA_AUDIO1_OF_IRQ,
767 .isr = snd_sgio2audio_error_isr,
768 .desc = "Capture Overflow"
769 }, {
770 .idx = 1,
771 .irq = MACEISA_AUDIO2_DMAT_IRQ,
772 .isr = snd_sgio2audio_dma_out_isr,
773 .desc = "Playback DMA Channel 1"
774 }, {
775 .idx = 1,
776 .irq = MACEISA_AUDIO2_MERR_IRQ,
777 .isr = snd_sgio2audio_error_isr,
778 .desc = "Memory Error Channel 1"
779 }, {
780 .idx = 2,
781 .irq = MACEISA_AUDIO3_DMAT_IRQ,
782 .isr = snd_sgio2audio_dma_out_isr,
783 .desc = "Playback DMA Channel 2"
784 }, {
785 .idx = 2,
786 .irq = MACEISA_AUDIO3_MERR_IRQ,
787 .isr = snd_sgio2audio_error_isr,
788 .desc = "Memory Error Channel 2"
789 }
790};
791
792
793
794static int snd_sgio2audio_free(struct snd_sgio2audio *chip)
795{
796 int i;
797
798
799 writeq(AUDIO_CONTROL_RESET, &mace->perif.audio.control);
800 udelay(1);
801 writeq(0, &mace->perif.audio.control);
802
803
804 for (i = 0; i < ARRAY_SIZE(snd_sgio2_isr_table); i++)
805 free_irq(snd_sgio2_isr_table[i].irq,
806 &chip->channel[snd_sgio2_isr_table[i].idx]);
807
808 dma_free_coherent(NULL, MACEISA_RINGBUFFERS_SIZE,
809 chip->ring_base, chip->ring_base_dma);
810
811
812 kfree(chip);
813 return 0;
814}
815
816static int snd_sgio2audio_dev_free(struct snd_device *device)
817{
818 struct snd_sgio2audio *chip = device->device_data;
819
820 return snd_sgio2audio_free(chip);
821}
822
823static struct snd_device_ops ops = {
824 .dev_free = snd_sgio2audio_dev_free,
825};
826
827static int snd_sgio2audio_create(struct snd_card *card,
828 struct snd_sgio2audio **rchip)
829{
830 struct snd_sgio2audio *chip;
831 int i, err;
832
833 *rchip = NULL;
834
835
836
837 if (!(readq(&mace->perif.audio.control) & AUDIO_CONTROL_CODEC_PRESENT))
838 return -ENOENT;
839
840 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
841 if (chip == NULL)
842 return -ENOMEM;
843
844 chip->card = card;
845
846 chip->ring_base = dma_alloc_coherent(NULL, MACEISA_RINGBUFFERS_SIZE,
847 &chip->ring_base_dma, GFP_USER);
848 if (chip->ring_base == NULL) {
849 printk(KERN_ERR
850 "sgio2audio: could not allocate ring buffers\n");
851 kfree(chip);
852 return -ENOMEM;
853 }
854
855 spin_lock_init(&chip->ad1843_lock);
856
857
858 for (i = 0; i < 3; i++) {
859 spin_lock_init(&chip->channel[i].lock);
860 chip->channel[i].idx = i;
861 }
862
863
864 for (i = 0; i < ARRAY_SIZE(snd_sgio2_isr_table); i++) {
865 if (request_irq(snd_sgio2_isr_table[i].irq,
866 snd_sgio2_isr_table[i].isr,
867 0,
868 snd_sgio2_isr_table[i].desc,
869 &chip->channel[snd_sgio2_isr_table[i].idx])) {
870 snd_sgio2audio_free(chip);
871 printk(KERN_ERR "sgio2audio: cannot allocate irq %d\n",
872 snd_sgio2_isr_table[i].irq);
873 return -EBUSY;
874 }
875 }
876
877
878 writeq(AUDIO_CONTROL_RESET, &mace->perif.audio.control);
879 udelay(1);
880 writeq(0, &mace->perif.audio.control);
881 msleep_interruptible(1);
882
883
884 writeq(chip->ring_base_dma, &mace->perif.ctrl.ringbase);
885
886
887 chip->ad1843.read = read_ad1843_reg;
888 chip->ad1843.write = write_ad1843_reg;
889 chip->ad1843.chip = chip;
890
891
892 err = ad1843_init(&chip->ad1843);
893 if (err < 0) {
894 snd_sgio2audio_free(chip);
895 return err;
896 }
897
898 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
899 if (err < 0) {
900 snd_sgio2audio_free(chip);
901 return err;
902 }
903 *rchip = chip;
904 return 0;
905}
906
907static int snd_sgio2audio_probe(struct platform_device *pdev)
908{
909 struct snd_card *card;
910 struct snd_sgio2audio *chip;
911 int err;
912
913 err = snd_card_new(&pdev->dev, index, id, THIS_MODULE, 0, &card);
914 if (err < 0)
915 return err;
916
917 err = snd_sgio2audio_create(card, &chip);
918 if (err < 0) {
919 snd_card_free(card);
920 return err;
921 }
922
923 err = snd_sgio2audio_new_pcm(chip);
924 if (err < 0) {
925 snd_card_free(card);
926 return err;
927 }
928 err = snd_sgio2audio_new_mixer(chip);
929 if (err < 0) {
930 snd_card_free(card);
931 return err;
932 }
933
934 strcpy(card->driver, "SGI O2 Audio");
935 strcpy(card->shortname, "SGI O2 Audio");
936 sprintf(card->longname, "%s irq %i-%i",
937 card->shortname,
938 MACEISA_AUDIO1_DMAT_IRQ,
939 MACEISA_AUDIO3_MERR_IRQ);
940
941 err = snd_card_register(card);
942 if (err < 0) {
943 snd_card_free(card);
944 return err;
945 }
946 platform_set_drvdata(pdev, card);
947 return 0;
948}
949
950static int snd_sgio2audio_remove(struct platform_device *pdev)
951{
952 struct snd_card *card = platform_get_drvdata(pdev);
953
954 snd_card_free(card);
955 return 0;
956}
957
958static struct platform_driver sgio2audio_driver = {
959 .probe = snd_sgio2audio_probe,
960 .remove = snd_sgio2audio_remove,
961 .driver = {
962 .name = "sgio2audio",
963 }
964};
965
966module_platform_driver(sgio2audio_driver);
967