This source file includes following definitions.
- read_ad1843_reg
- write_ad1843_reg
- sgio2audio_gain_info
- sgio2audio_gain_get
- sgio2audio_gain_put
- sgio2audio_source_info
- sgio2audio_source_get
- sgio2audio_source_put
- snd_sgio2audio_new_mixer
- snd_sgio2audio_dma_pull_frag
- snd_sgio2audio_dma_push_frag
- snd_sgio2audio_dma_start
- snd_sgio2audio_dma_stop
- snd_sgio2audio_dma_in_isr
- snd_sgio2audio_dma_out_isr
- snd_sgio2audio_error_isr
- snd_sgio2audio_playback1_open
- snd_sgio2audio_playback2_open
- snd_sgio2audio_capture_open
- snd_sgio2audio_pcm_close
- snd_sgio2audio_pcm_hw_params
- snd_sgio2audio_pcm_hw_free
- snd_sgio2audio_pcm_prepare
- snd_sgio2audio_pcm_trigger
- snd_sgio2audio_pcm_pointer
- snd_sgio2audio_new_pcm
- snd_sgio2audio_free
- snd_sgio2audio_dev_free
- snd_sgio2audio_create
- snd_sgio2audio_probe
- snd_sgio2audio_remove
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11 #include <linux/init.h>
12 #include <linux/delay.h>
13 #include <linux/spinlock.h>
14 #include <linux/interrupt.h>
15 #include <linux/dma-mapping.h>
16 #include <linux/platform_device.h>
17 #include <linux/io.h>
18 #include <linux/slab.h>
19 #include <linux/module.h>
20
21 #include <asm/ip32/ip32_ints.h>
22 #include <asm/ip32/mace.h>
23
24 #include <sound/core.h>
25 #include <sound/control.h>
26 #include <sound/pcm.h>
27 #define SNDRV_GET_ID
28 #include <sound/initval.h>
29 #include <sound/ad1843.h>
30
31
32 MODULE_AUTHOR("Vivien Chappelier <vivien.chappelier@linux-mips.org>");
33 MODULE_DESCRIPTION("SGI O2 Audio");
34 MODULE_LICENSE("GPL");
35 MODULE_SUPPORTED_DEVICE("{{Silicon Graphics, O2 Audio}}");
36
37 static int index = SNDRV_DEFAULT_IDX1;
38 static char *id = SNDRV_DEFAULT_STR1;
39
40 module_param(index, int, 0444);
41 MODULE_PARM_DESC(index, "Index value for SGI O2 soundcard.");
42 module_param(id, charp, 0444);
43 MODULE_PARM_DESC(id, "ID string for SGI O2 soundcard.");
44
45
46 #define AUDIO_CONTROL_RESET BIT(0)
47 #define AUDIO_CONTROL_CODEC_PRESENT BIT(1)
48
49 #define CODEC_CONTROL_WORD_SHIFT 0
50 #define CODEC_CONTROL_READ BIT(16)
51 #define CODEC_CONTROL_ADDRESS_SHIFT 17
52
53 #define CHANNEL_CONTROL_RESET BIT(10)
54 #define CHANNEL_DMA_ENABLE BIT(9)
55 #define CHANNEL_INT_THRESHOLD_DISABLED (0 << 5)
56 #define CHANNEL_INT_THRESHOLD_25 (1 << 5)
57 #define CHANNEL_INT_THRESHOLD_50 (2 << 5)
58 #define CHANNEL_INT_THRESHOLD_75 (3 << 5)
59 #define CHANNEL_INT_THRESHOLD_EMPTY (4 << 5)
60 #define CHANNEL_INT_THRESHOLD_NOT_EMPTY (5 << 5)
61 #define CHANNEL_INT_THRESHOLD_FULL (6 << 5)
62 #define CHANNEL_INT_THRESHOLD_NOT_FULL (7 << 5)
63
64 #define CHANNEL_RING_SHIFT 12
65 #define CHANNEL_RING_SIZE (1 << CHANNEL_RING_SHIFT)
66 #define CHANNEL_RING_MASK (CHANNEL_RING_SIZE - 1)
67
68 #define CHANNEL_LEFT_SHIFT 40
69 #define CHANNEL_RIGHT_SHIFT 8
70
71 struct snd_sgio2audio_chan {
72 int idx;
73 struct snd_pcm_substream *substream;
74 int pos;
75 snd_pcm_uframes_t size;
76 spinlock_t lock;
77 };
78
79
80 struct snd_sgio2audio {
81 struct snd_card *card;
82
83
84 struct snd_ad1843 ad1843;
85 spinlock_t ad1843_lock;
86
87
88 struct snd_sgio2audio_chan channel[3];
89
90
91 void *ring_base;
92 dma_addr_t ring_base_dma;
93 };
94
95
96
97
98
99
100
101
102 static int read_ad1843_reg(void *priv, int reg)
103 {
104 struct snd_sgio2audio *chip = priv;
105 int val;
106 unsigned long flags;
107
108 spin_lock_irqsave(&chip->ad1843_lock, flags);
109
110 writeq((reg << CODEC_CONTROL_ADDRESS_SHIFT) |
111 CODEC_CONTROL_READ, &mace->perif.audio.codec_control);
112 wmb();
113 val = readq(&mace->perif.audio.codec_control);
114 udelay(200);
115
116 val = readq(&mace->perif.audio.codec_read);
117
118 spin_unlock_irqrestore(&chip->ad1843_lock, flags);
119 return val;
120 }
121
122
123
124
125 static int write_ad1843_reg(void *priv, int reg, int word)
126 {
127 struct snd_sgio2audio *chip = priv;
128 int val;
129 unsigned long flags;
130
131 spin_lock_irqsave(&chip->ad1843_lock, flags);
132
133 writeq((reg << CODEC_CONTROL_ADDRESS_SHIFT) |
134 (word << CODEC_CONTROL_WORD_SHIFT),
135 &mace->perif.audio.codec_control);
136 wmb();
137 val = readq(&mace->perif.audio.codec_control);
138 udelay(200);
139
140 spin_unlock_irqrestore(&chip->ad1843_lock, flags);
141 return 0;
142 }
143
144 static int sgio2audio_gain_info(struct snd_kcontrol *kcontrol,
145 struct snd_ctl_elem_info *uinfo)
146 {
147 struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol);
148
149 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
150 uinfo->count = 2;
151 uinfo->value.integer.min = 0;
152 uinfo->value.integer.max = ad1843_get_gain_max(&chip->ad1843,
153 (int)kcontrol->private_value);
154 return 0;
155 }
156
157 static int sgio2audio_gain_get(struct snd_kcontrol *kcontrol,
158 struct snd_ctl_elem_value *ucontrol)
159 {
160 struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol);
161 int vol;
162
163 vol = ad1843_get_gain(&chip->ad1843, (int)kcontrol->private_value);
164
165 ucontrol->value.integer.value[0] = (vol >> 8) & 0xFF;
166 ucontrol->value.integer.value[1] = vol & 0xFF;
167
168 return 0;
169 }
170
171 static int sgio2audio_gain_put(struct snd_kcontrol *kcontrol,
172 struct snd_ctl_elem_value *ucontrol)
173 {
174 struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol);
175 int newvol, oldvol;
176
177 oldvol = ad1843_get_gain(&chip->ad1843, kcontrol->private_value);
178 newvol = (ucontrol->value.integer.value[0] << 8) |
179 ucontrol->value.integer.value[1];
180
181 newvol = ad1843_set_gain(&chip->ad1843, kcontrol->private_value,
182 newvol);
183
184 return newvol != oldvol;
185 }
186
187 static int sgio2audio_source_info(struct snd_kcontrol *kcontrol,
188 struct snd_ctl_elem_info *uinfo)
189 {
190 static const char * const texts[3] = {
191 "Cam Mic", "Mic", "Line"
192 };
193 return snd_ctl_enum_info(uinfo, 1, 3, texts);
194 }
195
196 static int sgio2audio_source_get(struct snd_kcontrol *kcontrol,
197 struct snd_ctl_elem_value *ucontrol)
198 {
199 struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol);
200
201 ucontrol->value.enumerated.item[0] = ad1843_get_recsrc(&chip->ad1843);
202 return 0;
203 }
204
205 static int sgio2audio_source_put(struct snd_kcontrol *kcontrol,
206 struct snd_ctl_elem_value *ucontrol)
207 {
208 struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol);
209 int newsrc, oldsrc;
210
211 oldsrc = ad1843_get_recsrc(&chip->ad1843);
212 newsrc = ad1843_set_recsrc(&chip->ad1843,
213 ucontrol->value.enumerated.item[0]);
214
215 return newsrc != oldsrc;
216 }
217
218
219 static const struct snd_kcontrol_new sgio2audio_ctrl_pcm0 = {
220 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
221 .name = "PCM Playback Volume",
222 .index = 0,
223 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
224 .private_value = AD1843_GAIN_PCM_0,
225 .info = sgio2audio_gain_info,
226 .get = sgio2audio_gain_get,
227 .put = sgio2audio_gain_put,
228 };
229
230
231 static const struct snd_kcontrol_new sgio2audio_ctrl_pcm1 = {
232 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
233 .name = "PCM Playback Volume",
234 .index = 1,
235 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
236 .private_value = AD1843_GAIN_PCM_1,
237 .info = sgio2audio_gain_info,
238 .get = sgio2audio_gain_get,
239 .put = sgio2audio_gain_put,
240 };
241
242
243 static const struct snd_kcontrol_new sgio2audio_ctrl_reclevel = {
244 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
245 .name = "Capture Volume",
246 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
247 .private_value = AD1843_GAIN_RECLEV,
248 .info = sgio2audio_gain_info,
249 .get = sgio2audio_gain_get,
250 .put = sgio2audio_gain_put,
251 };
252
253
254 static const struct snd_kcontrol_new sgio2audio_ctrl_recsource = {
255 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
256 .name = "Capture Source",
257 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
258 .info = sgio2audio_source_info,
259 .get = sgio2audio_source_get,
260 .put = sgio2audio_source_put,
261 };
262
263
264 static const struct snd_kcontrol_new sgio2audio_ctrl_line = {
265 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
266 .name = "Line Playback Volume",
267 .index = 0,
268 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
269 .private_value = AD1843_GAIN_LINE,
270 .info = sgio2audio_gain_info,
271 .get = sgio2audio_gain_get,
272 .put = sgio2audio_gain_put,
273 };
274
275
276 static const struct snd_kcontrol_new sgio2audio_ctrl_cd = {
277 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
278 .name = "Line Playback Volume",
279 .index = 1,
280 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
281 .private_value = AD1843_GAIN_LINE_2,
282 .info = sgio2audio_gain_info,
283 .get = sgio2audio_gain_get,
284 .put = sgio2audio_gain_put,
285 };
286
287
288 static const struct snd_kcontrol_new sgio2audio_ctrl_mic = {
289 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
290 .name = "Mic Playback Volume",
291 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
292 .private_value = AD1843_GAIN_MIC,
293 .info = sgio2audio_gain_info,
294 .get = sgio2audio_gain_get,
295 .put = sgio2audio_gain_put,
296 };
297
298
299 static int snd_sgio2audio_new_mixer(struct snd_sgio2audio *chip)
300 {
301 int err;
302
303 err = snd_ctl_add(chip->card,
304 snd_ctl_new1(&sgio2audio_ctrl_pcm0, chip));
305 if (err < 0)
306 return err;
307
308 err = snd_ctl_add(chip->card,
309 snd_ctl_new1(&sgio2audio_ctrl_pcm1, chip));
310 if (err < 0)
311 return err;
312
313 err = snd_ctl_add(chip->card,
314 snd_ctl_new1(&sgio2audio_ctrl_reclevel, chip));
315 if (err < 0)
316 return err;
317
318 err = snd_ctl_add(chip->card,
319 snd_ctl_new1(&sgio2audio_ctrl_recsource, chip));
320 if (err < 0)
321 return err;
322 err = snd_ctl_add(chip->card,
323 snd_ctl_new1(&sgio2audio_ctrl_line, chip));
324 if (err < 0)
325 return err;
326
327 err = snd_ctl_add(chip->card,
328 snd_ctl_new1(&sgio2audio_ctrl_cd, chip));
329 if (err < 0)
330 return err;
331
332 err = snd_ctl_add(chip->card,
333 snd_ctl_new1(&sgio2audio_ctrl_mic, chip));
334 if (err < 0)
335 return err;
336
337 return 0;
338 }
339
340
341
342
343
344 static int snd_sgio2audio_dma_pull_frag(struct snd_sgio2audio *chip,
345 unsigned int ch, unsigned int count)
346 {
347 int ret;
348 unsigned long src_base, src_pos, dst_mask;
349 unsigned char *dst_base;
350 int dst_pos;
351 u64 *src;
352 s16 *dst;
353 u64 x;
354 unsigned long flags;
355 struct snd_pcm_runtime *runtime = chip->channel[ch].substream->runtime;
356
357 spin_lock_irqsave(&chip->channel[ch].lock, flags);
358
359 src_base = (unsigned long) chip->ring_base | (ch << CHANNEL_RING_SHIFT);
360 src_pos = readq(&mace->perif.audio.chan[ch].read_ptr);
361 dst_base = runtime->dma_area;
362 dst_pos = chip->channel[ch].pos;
363 dst_mask = frames_to_bytes(runtime, runtime->buffer_size) - 1;
364
365
366 chip->channel[ch].size += (count >> 3);
367 ret = chip->channel[ch].size >= runtime->period_size;
368 chip->channel[ch].size %= runtime->period_size;
369
370 while (count) {
371 src = (u64 *)(src_base + src_pos);
372 dst = (s16 *)(dst_base + dst_pos);
373
374 x = *src;
375 dst[0] = (x >> CHANNEL_LEFT_SHIFT) & 0xffff;
376 dst[1] = (x >> CHANNEL_RIGHT_SHIFT) & 0xffff;
377
378 src_pos = (src_pos + sizeof(u64)) & CHANNEL_RING_MASK;
379 dst_pos = (dst_pos + 2 * sizeof(s16)) & dst_mask;
380 count -= sizeof(u64);
381 }
382
383 writeq(src_pos, &mace->perif.audio.chan[ch].read_ptr);
384 chip->channel[ch].pos = dst_pos;
385
386 spin_unlock_irqrestore(&chip->channel[ch].lock, flags);
387 return ret;
388 }
389
390
391
392 static int snd_sgio2audio_dma_push_frag(struct snd_sgio2audio *chip,
393 unsigned int ch, unsigned int count)
394 {
395 int ret;
396 s64 l, r;
397 unsigned long dst_base, dst_pos, src_mask;
398 unsigned char *src_base;
399 int src_pos;
400 u64 *dst;
401 s16 *src;
402 unsigned long flags;
403 struct snd_pcm_runtime *runtime = chip->channel[ch].substream->runtime;
404
405 spin_lock_irqsave(&chip->channel[ch].lock, flags);
406
407 dst_base = (unsigned long)chip->ring_base | (ch << CHANNEL_RING_SHIFT);
408 dst_pos = readq(&mace->perif.audio.chan[ch].write_ptr);
409 src_base = runtime->dma_area;
410 src_pos = chip->channel[ch].pos;
411 src_mask = frames_to_bytes(runtime, runtime->buffer_size) - 1;
412
413
414 chip->channel[ch].size += (count >> 3);
415 ret = chip->channel[ch].size >= runtime->period_size;
416 chip->channel[ch].size %= runtime->period_size;
417
418 while (count) {
419 src = (s16 *)(src_base + src_pos);
420 dst = (u64 *)(dst_base + dst_pos);
421
422 l = src[0];
423 r = src[1];
424
425 *dst = ((l & 0x00ffffff) << CHANNEL_LEFT_SHIFT) |
426 ((r & 0x00ffffff) << CHANNEL_RIGHT_SHIFT);
427
428 dst_pos = (dst_pos + sizeof(u64)) & CHANNEL_RING_MASK;
429 src_pos = (src_pos + 2 * sizeof(s16)) & src_mask;
430 count -= sizeof(u64);
431 }
432
433 writeq(dst_pos, &mace->perif.audio.chan[ch].write_ptr);
434 chip->channel[ch].pos = src_pos;
435
436 spin_unlock_irqrestore(&chip->channel[ch].lock, flags);
437 return ret;
438 }
439
440 static int snd_sgio2audio_dma_start(struct snd_pcm_substream *substream)
441 {
442 struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream);
443 struct snd_sgio2audio_chan *chan = substream->runtime->private_data;
444 int ch = chan->idx;
445
446
447 writeq(CHANNEL_CONTROL_RESET, &mace->perif.audio.chan[ch].control);
448 udelay(10);
449 writeq(0, &mace->perif.audio.chan[ch].control);
450
451 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
452
453 snd_sgio2audio_dma_push_frag(chip, ch, CHANNEL_RING_SIZE - 32);
454 }
455
456 writeq(CHANNEL_DMA_ENABLE | CHANNEL_INT_THRESHOLD_50,
457 &mace->perif.audio.chan[ch].control);
458 return 0;
459 }
460
461 static int snd_sgio2audio_dma_stop(struct snd_pcm_substream *substream)
462 {
463 struct snd_sgio2audio_chan *chan = substream->runtime->private_data;
464
465 writeq(0, &mace->perif.audio.chan[chan->idx].control);
466 return 0;
467 }
468
469 static irqreturn_t snd_sgio2audio_dma_in_isr(int irq, void *dev_id)
470 {
471 struct snd_sgio2audio_chan *chan = dev_id;
472 struct snd_pcm_substream *substream;
473 struct snd_sgio2audio *chip;
474 int count, ch;
475
476 substream = chan->substream;
477 chip = snd_pcm_substream_chip(substream);
478 ch = chan->idx;
479
480
481 count = CHANNEL_RING_SIZE -
482 readq(&mace->perif.audio.chan[ch].depth) - 32;
483 if (snd_sgio2audio_dma_pull_frag(chip, ch, count))
484 snd_pcm_period_elapsed(substream);
485
486 return IRQ_HANDLED;
487 }
488
489 static irqreturn_t snd_sgio2audio_dma_out_isr(int irq, void *dev_id)
490 {
491 struct snd_sgio2audio_chan *chan = dev_id;
492 struct snd_pcm_substream *substream;
493 struct snd_sgio2audio *chip;
494 int count, ch;
495
496 substream = chan->substream;
497 chip = snd_pcm_substream_chip(substream);
498 ch = chan->idx;
499
500 count = CHANNEL_RING_SIZE -
501 readq(&mace->perif.audio.chan[ch].depth) - 32;
502 if (snd_sgio2audio_dma_push_frag(chip, ch, count))
503 snd_pcm_period_elapsed(substream);
504
505 return IRQ_HANDLED;
506 }
507
508 static irqreturn_t snd_sgio2audio_error_isr(int irq, void *dev_id)
509 {
510 struct snd_sgio2audio_chan *chan = dev_id;
511 struct snd_pcm_substream *substream;
512
513 substream = chan->substream;
514 snd_sgio2audio_dma_stop(substream);
515 snd_sgio2audio_dma_start(substream);
516 return IRQ_HANDLED;
517 }
518
519
520
521 static const struct snd_pcm_hardware snd_sgio2audio_pcm_hw = {
522 .info = (SNDRV_PCM_INFO_MMAP |
523 SNDRV_PCM_INFO_MMAP_VALID |
524 SNDRV_PCM_INFO_INTERLEAVED |
525 SNDRV_PCM_INFO_BLOCK_TRANSFER),
526 .formats = SNDRV_PCM_FMTBIT_S16_BE,
527 .rates = SNDRV_PCM_RATE_8000_48000,
528 .rate_min = 8000,
529 .rate_max = 48000,
530 .channels_min = 2,
531 .channels_max = 2,
532 .buffer_bytes_max = 65536,
533 .period_bytes_min = 32768,
534 .period_bytes_max = 65536,
535 .periods_min = 1,
536 .periods_max = 1024,
537 };
538
539
540 static int snd_sgio2audio_playback1_open(struct snd_pcm_substream *substream)
541 {
542 struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream);
543 struct snd_pcm_runtime *runtime = substream->runtime;
544
545 runtime->hw = snd_sgio2audio_pcm_hw;
546 runtime->private_data = &chip->channel[1];
547 return 0;
548 }
549
550 static int snd_sgio2audio_playback2_open(struct snd_pcm_substream *substream)
551 {
552 struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream);
553 struct snd_pcm_runtime *runtime = substream->runtime;
554
555 runtime->hw = snd_sgio2audio_pcm_hw;
556 runtime->private_data = &chip->channel[2];
557 return 0;
558 }
559
560
561 static int snd_sgio2audio_capture_open(struct snd_pcm_substream *substream)
562 {
563 struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream);
564 struct snd_pcm_runtime *runtime = substream->runtime;
565
566 runtime->hw = snd_sgio2audio_pcm_hw;
567 runtime->private_data = &chip->channel[0];
568 return 0;
569 }
570
571
572 static int snd_sgio2audio_pcm_close(struct snd_pcm_substream *substream)
573 {
574 struct snd_pcm_runtime *runtime = substream->runtime;
575
576 runtime->private_data = NULL;
577 return 0;
578 }
579
580
581
582 static int snd_sgio2audio_pcm_hw_params(struct snd_pcm_substream *substream,
583 struct snd_pcm_hw_params *hw_params)
584 {
585 return snd_pcm_lib_alloc_vmalloc_buffer(substream,
586 params_buffer_bytes(hw_params));
587 }
588
589
590 static int snd_sgio2audio_pcm_hw_free(struct snd_pcm_substream *substream)
591 {
592 return snd_pcm_lib_free_vmalloc_buffer(substream);
593 }
594
595
596 static int snd_sgio2audio_pcm_prepare(struct snd_pcm_substream *substream)
597 {
598 struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream);
599 struct snd_pcm_runtime *runtime = substream->runtime;
600 struct snd_sgio2audio_chan *chan = substream->runtime->private_data;
601 int ch = chan->idx;
602 unsigned long flags;
603
604 spin_lock_irqsave(&chip->channel[ch].lock, flags);
605
606
607 chip->channel[ch].pos = 0;
608 chip->channel[ch].size = 0;
609 chip->channel[ch].substream = substream;
610
611
612
613 switch (substream->stream) {
614 case SNDRV_PCM_STREAM_PLAYBACK:
615 ad1843_setup_dac(&chip->ad1843,
616 ch - 1,
617 runtime->rate,
618 SNDRV_PCM_FORMAT_S16_LE,
619 runtime->channels);
620 break;
621 case SNDRV_PCM_STREAM_CAPTURE:
622 ad1843_setup_adc(&chip->ad1843,
623 runtime->rate,
624 SNDRV_PCM_FORMAT_S16_LE,
625 runtime->channels);
626 break;
627 }
628 spin_unlock_irqrestore(&chip->channel[ch].lock, flags);
629 return 0;
630 }
631
632
633 static int snd_sgio2audio_pcm_trigger(struct snd_pcm_substream *substream,
634 int cmd)
635 {
636 switch (cmd) {
637 case SNDRV_PCM_TRIGGER_START:
638
639 snd_sgio2audio_dma_start(substream);
640 break;
641 case SNDRV_PCM_TRIGGER_STOP:
642
643 snd_sgio2audio_dma_stop(substream);
644 break;
645 default:
646 return -EINVAL;
647 }
648 return 0;
649 }
650
651
652 static snd_pcm_uframes_t
653 snd_sgio2audio_pcm_pointer(struct snd_pcm_substream *substream)
654 {
655 struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream);
656 struct snd_sgio2audio_chan *chan = substream->runtime->private_data;
657
658
659 return bytes_to_frames(substream->runtime,
660 chip->channel[chan->idx].pos);
661 }
662
663
664 static const struct snd_pcm_ops snd_sgio2audio_playback1_ops = {
665 .open = snd_sgio2audio_playback1_open,
666 .close = snd_sgio2audio_pcm_close,
667 .ioctl = snd_pcm_lib_ioctl,
668 .hw_params = snd_sgio2audio_pcm_hw_params,
669 .hw_free = snd_sgio2audio_pcm_hw_free,
670 .prepare = snd_sgio2audio_pcm_prepare,
671 .trigger = snd_sgio2audio_pcm_trigger,
672 .pointer = snd_sgio2audio_pcm_pointer,
673 .page = snd_pcm_lib_get_vmalloc_page,
674 };
675
676 static const struct snd_pcm_ops snd_sgio2audio_playback2_ops = {
677 .open = snd_sgio2audio_playback2_open,
678 .close = snd_sgio2audio_pcm_close,
679 .ioctl = snd_pcm_lib_ioctl,
680 .hw_params = snd_sgio2audio_pcm_hw_params,
681 .hw_free = snd_sgio2audio_pcm_hw_free,
682 .prepare = snd_sgio2audio_pcm_prepare,
683 .trigger = snd_sgio2audio_pcm_trigger,
684 .pointer = snd_sgio2audio_pcm_pointer,
685 .page = snd_pcm_lib_get_vmalloc_page,
686 };
687
688 static const struct snd_pcm_ops snd_sgio2audio_capture_ops = {
689 .open = snd_sgio2audio_capture_open,
690 .close = snd_sgio2audio_pcm_close,
691 .ioctl = snd_pcm_lib_ioctl,
692 .hw_params = snd_sgio2audio_pcm_hw_params,
693 .hw_free = snd_sgio2audio_pcm_hw_free,
694 .prepare = snd_sgio2audio_pcm_prepare,
695 .trigger = snd_sgio2audio_pcm_trigger,
696 .pointer = snd_sgio2audio_pcm_pointer,
697 .page = snd_pcm_lib_get_vmalloc_page,
698 };
699
700
701
702
703
704
705 static int snd_sgio2audio_new_pcm(struct snd_sgio2audio *chip)
706 {
707 struct snd_pcm *pcm;
708 int err;
709
710
711 err = snd_pcm_new(chip->card, "SGI O2 Audio", 0, 1, 1, &pcm);
712 if (err < 0)
713 return err;
714
715 pcm->private_data = chip;
716 strcpy(pcm->name, "SGI O2 DAC1");
717
718
719 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
720 &snd_sgio2audio_playback1_ops);
721 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
722 &snd_sgio2audio_capture_ops);
723
724
725 err = snd_pcm_new(chip->card, "SGI O2 Audio", 1, 1, 0, &pcm);
726 if (err < 0)
727 return err;
728
729 pcm->private_data = chip;
730 strcpy(pcm->name, "SGI O2 DAC2");
731
732
733 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
734 &snd_sgio2audio_playback2_ops);
735
736 return 0;
737 }
738
739 static struct {
740 int idx;
741 int irq;
742 irqreturn_t (*isr)(int, void *);
743 const char *desc;
744 } snd_sgio2_isr_table[] = {
745 {
746 .idx = 0,
747 .irq = MACEISA_AUDIO1_DMAT_IRQ,
748 .isr = snd_sgio2audio_dma_in_isr,
749 .desc = "Capture DMA Channel 0"
750 }, {
751 .idx = 0,
752 .irq = MACEISA_AUDIO1_OF_IRQ,
753 .isr = snd_sgio2audio_error_isr,
754 .desc = "Capture Overflow"
755 }, {
756 .idx = 1,
757 .irq = MACEISA_AUDIO2_DMAT_IRQ,
758 .isr = snd_sgio2audio_dma_out_isr,
759 .desc = "Playback DMA Channel 1"
760 }, {
761 .idx = 1,
762 .irq = MACEISA_AUDIO2_MERR_IRQ,
763 .isr = snd_sgio2audio_error_isr,
764 .desc = "Memory Error Channel 1"
765 }, {
766 .idx = 2,
767 .irq = MACEISA_AUDIO3_DMAT_IRQ,
768 .isr = snd_sgio2audio_dma_out_isr,
769 .desc = "Playback DMA Channel 2"
770 }, {
771 .idx = 2,
772 .irq = MACEISA_AUDIO3_MERR_IRQ,
773 .isr = snd_sgio2audio_error_isr,
774 .desc = "Memory Error Channel 2"
775 }
776 };
777
778
779
780 static int snd_sgio2audio_free(struct snd_sgio2audio *chip)
781 {
782 int i;
783
784
785 writeq(AUDIO_CONTROL_RESET, &mace->perif.audio.control);
786 udelay(1);
787 writeq(0, &mace->perif.audio.control);
788
789
790 for (i = 0; i < ARRAY_SIZE(snd_sgio2_isr_table); i++)
791 free_irq(snd_sgio2_isr_table[i].irq,
792 &chip->channel[snd_sgio2_isr_table[i].idx]);
793
794 dma_free_coherent(chip->card->dev, MACEISA_RINGBUFFERS_SIZE,
795 chip->ring_base, chip->ring_base_dma);
796
797
798 kfree(chip);
799 return 0;
800 }
801
802 static int snd_sgio2audio_dev_free(struct snd_device *device)
803 {
804 struct snd_sgio2audio *chip = device->device_data;
805
806 return snd_sgio2audio_free(chip);
807 }
808
809 static struct snd_device_ops ops = {
810 .dev_free = snd_sgio2audio_dev_free,
811 };
812
813 static int snd_sgio2audio_create(struct snd_card *card,
814 struct snd_sgio2audio **rchip)
815 {
816 struct snd_sgio2audio *chip;
817 int i, err;
818
819 *rchip = NULL;
820
821
822
823 if (!(readq(&mace->perif.audio.control) & AUDIO_CONTROL_CODEC_PRESENT))
824 return -ENOENT;
825
826 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
827 if (chip == NULL)
828 return -ENOMEM;
829
830 chip->card = card;
831
832 chip->ring_base = dma_alloc_coherent(card->dev,
833 MACEISA_RINGBUFFERS_SIZE,
834 &chip->ring_base_dma, GFP_KERNEL);
835 if (chip->ring_base == NULL) {
836 printk(KERN_ERR
837 "sgio2audio: could not allocate ring buffers\n");
838 kfree(chip);
839 return -ENOMEM;
840 }
841
842 spin_lock_init(&chip->ad1843_lock);
843
844
845 for (i = 0; i < 3; i++) {
846 spin_lock_init(&chip->channel[i].lock);
847 chip->channel[i].idx = i;
848 }
849
850
851 for (i = 0; i < ARRAY_SIZE(snd_sgio2_isr_table); i++) {
852 if (request_irq(snd_sgio2_isr_table[i].irq,
853 snd_sgio2_isr_table[i].isr,
854 0,
855 snd_sgio2_isr_table[i].desc,
856 &chip->channel[snd_sgio2_isr_table[i].idx])) {
857 snd_sgio2audio_free(chip);
858 printk(KERN_ERR "sgio2audio: cannot allocate irq %d\n",
859 snd_sgio2_isr_table[i].irq);
860 return -EBUSY;
861 }
862 }
863
864
865 writeq(AUDIO_CONTROL_RESET, &mace->perif.audio.control);
866 udelay(1);
867 writeq(0, &mace->perif.audio.control);
868 msleep_interruptible(1);
869
870
871 writeq(chip->ring_base_dma, &mace->perif.ctrl.ringbase);
872
873
874 chip->ad1843.read = read_ad1843_reg;
875 chip->ad1843.write = write_ad1843_reg;
876 chip->ad1843.chip = chip;
877
878
879 err = ad1843_init(&chip->ad1843);
880 if (err < 0) {
881 snd_sgio2audio_free(chip);
882 return err;
883 }
884
885 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
886 if (err < 0) {
887 snd_sgio2audio_free(chip);
888 return err;
889 }
890 *rchip = chip;
891 return 0;
892 }
893
894 static int snd_sgio2audio_probe(struct platform_device *pdev)
895 {
896 struct snd_card *card;
897 struct snd_sgio2audio *chip;
898 int err;
899
900 err = snd_card_new(&pdev->dev, index, id, THIS_MODULE, 0, &card);
901 if (err < 0)
902 return err;
903
904 err = snd_sgio2audio_create(card, &chip);
905 if (err < 0) {
906 snd_card_free(card);
907 return err;
908 }
909
910 err = snd_sgio2audio_new_pcm(chip);
911 if (err < 0) {
912 snd_card_free(card);
913 return err;
914 }
915 err = snd_sgio2audio_new_mixer(chip);
916 if (err < 0) {
917 snd_card_free(card);
918 return err;
919 }
920
921 strcpy(card->driver, "SGI O2 Audio");
922 strcpy(card->shortname, "SGI O2 Audio");
923 sprintf(card->longname, "%s irq %i-%i",
924 card->shortname,
925 MACEISA_AUDIO1_DMAT_IRQ,
926 MACEISA_AUDIO3_MERR_IRQ);
927
928 err = snd_card_register(card);
929 if (err < 0) {
930 snd_card_free(card);
931 return err;
932 }
933 platform_set_drvdata(pdev, card);
934 return 0;
935 }
936
937 static int snd_sgio2audio_remove(struct platform_device *pdev)
938 {
939 struct snd_card *card = platform_get_drvdata(pdev);
940
941 snd_card_free(card);
942 return 0;
943 }
944
945 static struct platform_driver sgio2audio_driver = {
946 .probe = snd_sgio2audio_probe,
947 .remove = snd_sgio2audio_remove,
948 .driver = {
949 .name = "sgio2audio",
950 }
951 };
952
953 module_platform_driver(sgio2audio_driver);