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-rw-r--r--sound/sh/aica.c665
1 files changed, 665 insertions, 0 deletions
diff --git a/sound/sh/aica.c b/sound/sh/aica.c
new file mode 100644
index 000000000000..739786529ca5
--- /dev/null
+++ b/sound/sh/aica.c
@@ -0,0 +1,665 @@
1/*
2* This code is licenced under
3* the General Public Licence
4* version 2
5*
6* Copyright Adrian McMenamin 2005, 2006, 2007
7* <adrian@mcmen.demon.co.uk>
8* Requires firmware (BSD licenced) available from:
9* http://linuxdc.cvs.sourceforge.net/linuxdc/linux-sh-dc/sound/oss/aica/firmware/
10* or the maintainer
11*
12* This program is free software; you can redistribute it and/or modify
13* it under the terms of version 2 of the GNU General Public License as published by
14* the Free Software Foundation.
15*
16* This program is distributed in the hope that it will be useful,
17* but WITHOUT ANY WARRANTY; without even the implied warranty of
18* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19* GNU General Public License for more details.
20*
21* You should have received a copy of the GNU General Public License
22* along with this program; if not, write to the Free Software
23* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24*
25*/
26
27#include <linux/init.h>
28#include <linux/jiffies.h>
29#include <linux/slab.h>
30#include <linux/time.h>
31#include <linux/wait.h>
32#include <linux/moduleparam.h>
33#include <linux/platform_device.h>
34#include <linux/firmware.h>
35#include <linux/timer.h>
36#include <linux/delay.h>
37#include <linux/workqueue.h>
38#include <sound/driver.h>
39#include <sound/core.h>
40#include <sound/control.h>
41#include <sound/pcm.h>
42#include <sound/initval.h>
43#include <sound/info.h>
44#include <asm/io.h>
45#include <asm/dma.h>
46#include <asm/dreamcast/sysasic.h>
47#include "aica.h"
48
49MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk>");
50MODULE_DESCRIPTION("Dreamcast AICA sound (pcm) driver");
51MODULE_LICENSE("GPL");
52MODULE_SUPPORTED_DEVICE("{{Yamaha/SEGA, AICA}}");
53
54/* module parameters */
55#define CARD_NAME "AICA"
56static int index = -1;
57static char *id;
58static int enable = 1;
59module_param(index, int, 0444);
60MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
61module_param(id, charp, 0444);
62MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
63module_param(enable, bool, 0644);
64MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
65
66/* Use workqueue */
67static struct workqueue_struct *aica_queue;
68
69/* Simple platform device */
70static struct platform_device *pd;
71static struct resource aica_memory_space[2] = {
72 {
73 .name = "AICA ARM CONTROL",
74 .start = ARM_RESET_REGISTER,
75 .flags = IORESOURCE_MEM,
76 .end = ARM_RESET_REGISTER + 3,
77 },
78 {
79 .name = "AICA Sound RAM",
80 .start = SPU_MEMORY_BASE,
81 .flags = IORESOURCE_MEM,
82 .end = SPU_MEMORY_BASE + 0x200000 - 1,
83 },
84};
85
86/* SPU specific functions */
87/* spu_write_wait - wait for G2-SH FIFO to clear */
88static void spu_write_wait(void)
89{
90 int time_count;
91 time_count = 0;
92 while (1) {
93 if (!(readl(G2_FIFO) & 0x11))
94 break;
95 /* To ensure hardware failure doesn't wedge kernel */
96 time_count++;
97 if (time_count > 0x10000) {
98 snd_printk
99 ("WARNING: G2 FIFO appears to be blocked.\n");
100 break;
101 }
102 }
103}
104
105/* spu_memset - write to memory in SPU address space */
106static void spu_memset(u32 toi, u32 what, int length)
107{
108 int i;
109 snd_assert(length % 4 == 0, return);
110 for (i = 0; i < length; i++) {
111 if (!(i % 8))
112 spu_write_wait();
113 writel(what, toi + SPU_MEMORY_BASE);
114 toi++;
115 }
116}
117
118/* spu_memload - write to SPU address space */
119static void spu_memload(u32 toi, void *from, int length)
120{
121 u32 *froml = from;
122 u32 __iomem *to = (u32 __iomem *) (SPU_MEMORY_BASE + toi);
123 int i;
124 u32 val;
125 length = DIV_ROUND_UP(length, 4);
126 spu_write_wait();
127 for (i = 0; i < length; i++) {
128 if (!(i % 8))
129 spu_write_wait();
130 val = *froml;
131 writel(val, to);
132 froml++;
133 to++;
134 }
135}
136
137/* spu_disable - set spu registers to stop sound output */
138static void spu_disable(void)
139{
140 int i;
141 u32 regval;
142 spu_write_wait();
143 regval = readl(ARM_RESET_REGISTER);
144 regval |= 1;
145 spu_write_wait();
146 writel(regval, ARM_RESET_REGISTER);
147 for (i = 0; i < 64; i++) {
148 spu_write_wait();
149 regval = readl(SPU_REGISTER_BASE + (i * 0x80));
150 regval = (regval & ~0x4000) | 0x8000;
151 spu_write_wait();
152 writel(regval, SPU_REGISTER_BASE + (i * 0x80));
153 }
154}
155
156/* spu_enable - set spu registers to enable sound output */
157static void spu_enable(void)
158{
159 u32 regval = readl(ARM_RESET_REGISTER);
160 regval &= ~1;
161 spu_write_wait();
162 writel(regval, ARM_RESET_REGISTER);
163}
164
165/*
166 * Halt the sound processor, clear the memory,
167 * load some default ARM7 code, and then restart ARM7
168*/
169static void spu_reset(void)
170{
171 spu_disable();
172 spu_memset(0, 0, 0x200000 / 4);
173 /* Put ARM7 in endless loop */
174 ctrl_outl(0xea000002, SPU_MEMORY_BASE);
175 spu_enable();
176}
177
178/* aica_chn_start - write to spu to start playback */
179static void aica_chn_start(void)
180{
181 spu_write_wait();
182 writel(AICA_CMD_KICK | AICA_CMD_START, (u32 *) AICA_CONTROL_POINT);
183}
184
185/* aica_chn_halt - write to spu to halt playback */
186static void aica_chn_halt(void)
187{
188 spu_write_wait();
189 writel(AICA_CMD_KICK | AICA_CMD_STOP, (u32 *) AICA_CONTROL_POINT);
190}
191
192/* ALSA code below */
193static struct snd_pcm_hardware snd_pcm_aica_playback_hw = {
194 .info = (SNDRV_PCM_INFO_NONINTERLEAVED),
195 .formats =
196 (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE |
197 SNDRV_PCM_FMTBIT_IMA_ADPCM),
198 .rates = SNDRV_PCM_RATE_8000_48000,
199 .rate_min = 8000,
200 .rate_max = 48000,
201 .channels_min = 1,
202 .channels_max = 2,
203 .buffer_bytes_max = AICA_BUFFER_SIZE,
204 .period_bytes_min = AICA_PERIOD_SIZE,
205 .period_bytes_max = AICA_PERIOD_SIZE,
206 .periods_min = AICA_PERIOD_NUMBER,
207 .periods_max = AICA_PERIOD_NUMBER,
208};
209
210static int aica_dma_transfer(int channels, int buffer_size,
211 struct snd_pcm_substream *substream)
212{
213 int q, err, period_offset;
214 struct snd_card_aica *dreamcastcard;
215 struct snd_pcm_runtime *runtime;
216 err = 0;
217 dreamcastcard = substream->pcm->private_data;
218 period_offset = dreamcastcard->clicks;
219 period_offset %= (AICA_PERIOD_NUMBER / channels);
220 runtime = substream->runtime;
221 for (q = 0; q < channels; q++) {
222 err = dma_xfer(AICA_DMA_CHANNEL,
223 (unsigned long) (runtime->dma_area +
224 (AICA_BUFFER_SIZE * q) /
225 channels +
226 AICA_PERIOD_SIZE *
227 period_offset),
228 AICA_CHANNEL0_OFFSET + q * CHANNEL_OFFSET +
229 AICA_PERIOD_SIZE * period_offset,
230 buffer_size / channels, AICA_DMA_MODE);
231 if (unlikely(err < 0))
232 break;
233 dma_wait_for_completion(AICA_DMA_CHANNEL);
234 }
235 return err;
236}
237
238static void startup_aica(struct snd_card_aica *dreamcastcard)
239{
240 spu_memload(AICA_CHANNEL0_CONTROL_OFFSET,
241 dreamcastcard->channel, sizeof(struct aica_channel));
242 aica_chn_start();
243}
244
245static void run_spu_dma(struct work_struct *work)
246{
247 int buffer_size;
248 struct snd_pcm_runtime *runtime;
249 struct snd_card_aica *dreamcastcard;
250 dreamcastcard =
251 container_of(work, struct snd_card_aica, spu_dma_work);
252 runtime = dreamcastcard->substream->runtime;
253 if (unlikely(dreamcastcard->dma_check == 0)) {
254 buffer_size =
255 frames_to_bytes(runtime, runtime->buffer_size);
256 if (runtime->channels > 1)
257 dreamcastcard->channel->flags |= 0x01;
258 aica_dma_transfer(runtime->channels, buffer_size,
259 dreamcastcard->substream);
260 startup_aica(dreamcastcard);
261 dreamcastcard->clicks =
262 buffer_size / (AICA_PERIOD_SIZE * runtime->channels);
263 return;
264 } else {
265 aica_dma_transfer(runtime->channels,
266 AICA_PERIOD_SIZE * runtime->channels,
267 dreamcastcard->substream);
268 snd_pcm_period_elapsed(dreamcastcard->substream);
269 dreamcastcard->clicks++;
270 if (unlikely(dreamcastcard->clicks >= AICA_PERIOD_NUMBER))
271 dreamcastcard->clicks %= AICA_PERIOD_NUMBER;
272 mod_timer(&dreamcastcard->timer, jiffies + 1);
273 }
274}
275
276static void aica_period_elapsed(unsigned long timer_var)
277{
278 /*timer function - so cannot sleep */
279 int play_period;
280 struct snd_pcm_runtime *runtime;
281 struct snd_pcm_substream *substream;
282 struct snd_card_aica *dreamcastcard;
283 substream = (struct snd_pcm_substream *) timer_var;
284 runtime = substream->runtime;
285 dreamcastcard = substream->pcm->private_data;
286 /* Have we played out an additional period? */
287 play_period =
288 frames_to_bytes(runtime,
289 readl
290 (AICA_CONTROL_CHANNEL_SAMPLE_NUMBER)) /
291 AICA_PERIOD_SIZE;
292 if (play_period == dreamcastcard->current_period) {
293 /* reschedule the timer */
294 mod_timer(&(dreamcastcard->timer), jiffies + 1);
295 return;
296 }
297 if (runtime->channels > 1)
298 dreamcastcard->current_period = play_period;
299 if (unlikely(dreamcastcard->dma_check == 0))
300 dreamcastcard->dma_check = 1;
301 queue_work(aica_queue, &(dreamcastcard->spu_dma_work));
302}
303
304static void spu_begin_dma(struct snd_pcm_substream *substream)
305{
306 struct snd_card_aica *dreamcastcard;
307 struct snd_pcm_runtime *runtime;
308 runtime = substream->runtime;
309 dreamcastcard = substream->pcm->private_data;
310 /*get the queue to do the work */
311 queue_work(aica_queue, &(dreamcastcard->spu_dma_work));
312 /* Timer may already be running */
313 if (unlikely(dreamcastcard->timer.data)) {
314 mod_timer(&dreamcastcard->timer, jiffies + 4);
315 return;
316 }
317 init_timer(&(dreamcastcard->timer));
318 dreamcastcard->timer.data = (unsigned long) substream;
319 dreamcastcard->timer.function = aica_period_elapsed;
320 dreamcastcard->timer.expires = jiffies + 4;
321 add_timer(&(dreamcastcard->timer));
322}
323
324static int snd_aicapcm_pcm_open(struct snd_pcm_substream
325 *substream)
326{
327 struct snd_pcm_runtime *runtime;
328 struct aica_channel *channel;
329 struct snd_card_aica *dreamcastcard;
330 if (!enable)
331 return -ENOENT;
332 dreamcastcard = substream->pcm->private_data;
333 channel = kmalloc(sizeof(struct aica_channel), GFP_KERNEL);
334 if (!channel)
335 return -ENOMEM;
336 /* set defaults for channel */
337 channel->sfmt = SM_8BIT;
338 channel->cmd = AICA_CMD_START;
339 channel->vol = dreamcastcard->master_volume;
340 channel->pan = 0x80;
341 channel->pos = 0;
342 channel->flags = 0; /* default to mono */
343 dreamcastcard->channel = channel;
344 runtime = substream->runtime;
345 runtime->hw = snd_pcm_aica_playback_hw;
346 spu_enable();
347 dreamcastcard->clicks = 0;
348 dreamcastcard->current_period = 0;
349 dreamcastcard->dma_check = 0;
350 return 0;
351}
352
353static int snd_aicapcm_pcm_close(struct snd_pcm_substream
354 *substream)
355{
356 struct snd_card_aica *dreamcastcard = substream->pcm->private_data;
357 flush_workqueue(aica_queue);
358 if (dreamcastcard->timer.data)
359 del_timer(&dreamcastcard->timer);
360 kfree(dreamcastcard->channel);
361 spu_disable();
362 return 0;
363}
364
365static int snd_aicapcm_pcm_hw_free(struct snd_pcm_substream
366 *substream)
367{
368 /* Free the DMA buffer */
369 return snd_pcm_lib_free_pages(substream);
370}
371
372static int snd_aicapcm_pcm_hw_params(struct snd_pcm_substream
373 *substream, struct snd_pcm_hw_params
374 *hw_params)
375{
376 /* Allocate a DMA buffer using ALSA built-ins */
377 return
378 snd_pcm_lib_malloc_pages(substream,
379 params_buffer_bytes(hw_params));
380}
381
382static int snd_aicapcm_pcm_prepare(struct snd_pcm_substream
383 *substream)
384{
385 struct snd_card_aica *dreamcastcard = substream->pcm->private_data;
386 if ((substream->runtime)->format == SNDRV_PCM_FORMAT_S16_LE)
387 dreamcastcard->channel->sfmt = SM_16BIT;
388 dreamcastcard->channel->freq = substream->runtime->rate;
389 dreamcastcard->substream = substream;
390 return 0;
391}
392
393static int snd_aicapcm_pcm_trigger(struct snd_pcm_substream
394 *substream, int cmd)
395{
396 switch (cmd) {
397 case SNDRV_PCM_TRIGGER_START:
398 spu_begin_dma(substream);
399 break;
400 case SNDRV_PCM_TRIGGER_STOP:
401 aica_chn_halt();
402 break;
403 default:
404 return -EINVAL;
405 }
406 return 0;
407}
408
409static unsigned long snd_aicapcm_pcm_pointer(struct snd_pcm_substream
410 *substream)
411{
412 return readl(AICA_CONTROL_CHANNEL_SAMPLE_NUMBER);
413}
414
415static struct snd_pcm_ops snd_aicapcm_playback_ops = {
416 .open = snd_aicapcm_pcm_open,
417 .close = snd_aicapcm_pcm_close,
418 .ioctl = snd_pcm_lib_ioctl,
419 .hw_params = snd_aicapcm_pcm_hw_params,
420 .hw_free = snd_aicapcm_pcm_hw_free,
421 .prepare = snd_aicapcm_pcm_prepare,
422 .trigger = snd_aicapcm_pcm_trigger,
423 .pointer = snd_aicapcm_pcm_pointer,
424};
425
426/* TO DO: set up to handle more than one pcm instance */
427static int __init snd_aicapcmchip(struct snd_card_aica
428 *dreamcastcard, int pcm_index)
429{
430 struct snd_pcm *pcm;
431 int err;
432 /* AICA has no capture ability */
433 err =
434 snd_pcm_new(dreamcastcard->card, "AICA PCM", pcm_index, 1, 0,
435 &pcm);
436 if (unlikely(err < 0))
437 return err;
438 pcm->private_data = dreamcastcard;
439 strcpy(pcm->name, "AICA PCM");
440 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
441 &snd_aicapcm_playback_ops);
442 /* Allocate the DMA buffers */
443 err =
444 snd_pcm_lib_preallocate_pages_for_all(pcm,
445 SNDRV_DMA_TYPE_CONTINUOUS,
446 snd_dma_continuous_data
447 (GFP_KERNEL),
448 AICA_BUFFER_SIZE,
449 AICA_BUFFER_SIZE);
450 return err;
451}
452
453/* Mixer controls */
454static int aica_pcmswitch_info(struct snd_kcontrol *kcontrol,
455 struct snd_ctl_elem_info *uinfo)
456{
457 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
458 uinfo->count = 1;
459 uinfo->value.integer.min = 0;
460 uinfo->value.integer.max = 1;
461 return 0;
462}
463
464static int aica_pcmswitch_get(struct snd_kcontrol *kcontrol,
465 struct snd_ctl_elem_value *ucontrol)
466{
467 ucontrol->value.integer.value[0] = 1; /* TO DO: Fix me */
468 return 0;
469}
470
471static int aica_pcmswitch_put(struct snd_kcontrol *kcontrol,
472 struct snd_ctl_elem_value *ucontrol)
473{
474 if (ucontrol->value.integer.value[0] == 1)
475 return 0; /* TO DO: Fix me */
476 else
477 aica_chn_halt();
478 return 0;
479}
480
481static int aica_pcmvolume_info(struct snd_kcontrol *kcontrol,
482 struct snd_ctl_elem_info *uinfo)
483{
484 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
485 uinfo->count = 1;
486 uinfo->value.integer.min = 0;
487 uinfo->value.integer.max = 0xFF;
488 return 0;
489}
490
491static int aica_pcmvolume_get(struct snd_kcontrol *kcontrol,
492 struct snd_ctl_elem_value *ucontrol)
493{
494 struct snd_card_aica *dreamcastcard;
495 dreamcastcard = kcontrol->private_data;
496 if (unlikely(!dreamcastcard->channel))
497 return -ETXTBSY; /* we've not yet been set up */
498 ucontrol->value.integer.value[0] = dreamcastcard->channel->vol;
499 return 0;
500}
501
502static int aica_pcmvolume_put(struct snd_kcontrol *kcontrol,
503 struct snd_ctl_elem_value *ucontrol)
504{
505 struct snd_card_aica *dreamcastcard;
506 dreamcastcard = kcontrol->private_data;
507 if (unlikely(!dreamcastcard->channel))
508 return -ETXTBSY;
509 if (unlikely(dreamcastcard->channel->vol ==
510 ucontrol->value.integer.value[0]))
511 return 0;
512 dreamcastcard->channel->vol = ucontrol->value.integer.value[0];
513 dreamcastcard->master_volume = ucontrol->value.integer.value[0];
514 spu_memload(AICA_CHANNEL0_CONTROL_OFFSET,
515 dreamcastcard->channel, sizeof(struct aica_channel));
516 return 1;
517}
518
519static struct snd_kcontrol_new snd_aica_pcmswitch_control __devinitdata = {
520 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
521 .name = "PCM Playback Switch",
522 .index = 0,
523 .info = aica_pcmswitch_info,
524 .get = aica_pcmswitch_get,
525 .put = aica_pcmswitch_put
526};
527
528static struct snd_kcontrol_new snd_aica_pcmvolume_control __devinitdata = {
529 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
530 .name = "PCM Playback Volume",
531 .index = 0,
532 .info = aica_pcmvolume_info,
533 .get = aica_pcmvolume_get,
534 .put = aica_pcmvolume_put
535};
536
537static int load_aica_firmware(void)
538{
539 int err;
540 const struct firmware *fw_entry;
541 spu_reset();
542 err = request_firmware(&fw_entry, "aica_firmware.bin", &pd->dev);
543 if (unlikely(err))
544 return err;
545 /* write firware into memory */
546 spu_disable();
547 spu_memload(0, fw_entry->data, fw_entry->size);
548 spu_enable();
549 release_firmware(fw_entry);
550 return err;
551}
552
553static int __devinit add_aicamixer_controls(struct snd_card_aica
554 *dreamcastcard)
555{
556 int err;
557 err = snd_ctl_add
558 (dreamcastcard->card,
559 snd_ctl_new1(&snd_aica_pcmvolume_control, dreamcastcard));
560 if (unlikely(err < 0))
561 return err;
562 err = snd_ctl_add
563 (dreamcastcard->card,
564 snd_ctl_new1(&snd_aica_pcmswitch_control, dreamcastcard));
565 if (unlikely(err < 0))
566 return err;
567 return 0;
568}
569
570static int snd_aica_remove(struct platform_device *devptr)
571{
572 struct snd_card_aica *dreamcastcard;
573 dreamcastcard = platform_get_drvdata(devptr);
574 if (unlikely(!dreamcastcard))
575 return -ENODEV;
576 snd_card_free(dreamcastcard->card);
577 kfree(dreamcastcard);
578 platform_set_drvdata(devptr, NULL);
579 return 0;
580}
581
582static int __init snd_aica_probe(struct platform_device *devptr)
583{
584 int err;
585 struct snd_card_aica *dreamcastcard;
586 dreamcastcard = kmalloc(sizeof(struct snd_card_aica), GFP_KERNEL);
587 if (unlikely(!dreamcastcard))
588 return -ENOMEM;
589 dreamcastcard->card =
590 snd_card_new(index, SND_AICA_DRIVER, THIS_MODULE, 0);
591 if (unlikely(!dreamcastcard->card)) {
592 kfree(dreamcastcard);
593 return -ENODEV;
594 }
595 strcpy(dreamcastcard->card->driver, "snd_aica");
596 strcpy(dreamcastcard->card->shortname, SND_AICA_DRIVER);
597 strcpy(dreamcastcard->card->longname,
598 "Yamaha AICA Super Intelligent Sound Processor for SEGA Dreamcast");
599 /* Prepare to use the queue */
600 INIT_WORK(&(dreamcastcard->spu_dma_work), run_spu_dma);
601 /* Load the PCM 'chip' */
602 err = snd_aicapcmchip(dreamcastcard, 0);
603 if (unlikely(err < 0))
604 goto freedreamcast;
605 snd_card_set_dev(dreamcastcard->card, &devptr->dev);
606 dreamcastcard->timer.data = 0;
607 dreamcastcard->channel = NULL;
608 /* Add basic controls */
609 err = add_aicamixer_controls(dreamcastcard);
610 if (unlikely(err < 0))
611 goto freedreamcast;
612 /* Register the card with ALSA subsystem */
613 err = snd_card_register(dreamcastcard->card);
614 if (unlikely(err < 0))
615 goto freedreamcast;
616 platform_set_drvdata(devptr, dreamcastcard);
617 aica_queue = create_workqueue(CARD_NAME);
618 if (unlikely(!aica_queue))
619 goto freedreamcast;
620 snd_printk
621 ("ALSA Driver for Yamaha AICA Super Intelligent Sound Processor\n");
622 return 0;
623 freedreamcast:
624 snd_card_free(dreamcastcard->card);
625 kfree(dreamcastcard);
626 return err;
627}
628
629static struct platform_driver snd_aica_driver = {
630 .probe = snd_aica_probe,
631 .remove = snd_aica_remove,
632 .driver = {
633 .name = SND_AICA_DRIVER},
634};
635
636static int __init aica_init(void)
637{
638 int err;
639 err = platform_driver_register(&snd_aica_driver);
640 if (unlikely(err < 0))
641 return err;
642 pd = platform_device_register_simple(SND_AICA_DRIVER, -1,
643 aica_memory_space, 2);
644 if (unlikely(IS_ERR(pd))) {
645 platform_driver_unregister(&snd_aica_driver);
646 return PTR_ERR(pd);
647 }
648 /* Load the firmware */
649 return load_aica_firmware();
650}
651
652static void __exit aica_exit(void)
653{
654 /* Destroy the aica kernel thread *
655 * being extra cautious to check if it exists*/
656 if (likely(aica_queue))
657 destroy_workqueue(aica_queue);
658 platform_device_unregister(pd);
659 platform_driver_unregister(&snd_aica_driver);
660 /* Kill any sound still playing and reset ARM7 to safe state */
661 spu_reset();
662}
663
664module_init(aica_init);
665module_exit(aica_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2025-03-04 13:48:39 -0500