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-rw-r--r--sound/sh/aica.c675
1 files changed, 675 insertions, 0 deletions
diff --git a/sound/sh/aica.c b/sound/sh/aica.c
new file mode 100644
index 000000000000..97bb86a58622
--- /dev/null
+++ b/sound/sh/aica.c
@@ -0,0 +1,675 @@
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 */
67
68static struct spu_work_holder {
69 struct work_struct spu_dma_work;
70 void *sspointer;
71} spu_working;
72
73static struct workqueue_struct *aica_queue;
74
75/* Simple platform device */
76static struct platform_device *pd;
77static struct resource aica_memory_space[2] = {
78 {
79 .name = "AICA ARM CONTROL",
80 .start = ARM_RESET_REGISTER,
81 .flags = IORESOURCE_MEM,
82 .end = ARM_RESET_REGISTER + 3,
83 },
84 {
85 .name = "AICA Sound RAM",
86 .start = SPU_MEMORY_BASE,
87 .flags = IORESOURCE_MEM,
88 .end = SPU_MEMORY_BASE + 0x200000 - 1,
89 },
90};
91
92/* SPU specific functions */
93/* spu_write_wait - wait for G2-SH FIFO to clear */
94static void spu_write_wait(void)
95{
96 int time_count;
97 time_count = 0;
98 while (1) {
99 if (!(readl(G2_FIFO) & 0x11))
100 break;
101 /* To ensure hardware failure doesn't wedge kernel */
102 time_count++;
103 if (time_count > 0x10000)
104 {
105 snd_printk("WARNING: G2 FIFO appears to be blocked.\n");
106 break;
107 }
108 }
109}
110
111/* spu_memset - write to memory in SPU address space */
112static void spu_memset(u32 toi, u32 what, int length)
113{
114 int i;
115 snd_assert(length % 4 == 0, return);
116 for (i = 0; i < length; i++) {
117 if (!(i % 8))
118 spu_write_wait();
119 writel(what, toi + SPU_MEMORY_BASE);
120 toi++;
121 }
122}
123
124/* spu_memload - write to SPU address space */
125static void spu_memload(u32 toi, void *from, int length)
126{
127 u32 *froml = from;
128 u32 __iomem *to = (u32 __iomem *) (SPU_MEMORY_BASE + toi);
129 int i;
130 u32 val;
131 length = DIV_ROUND_UP(length, 4);
132 spu_write_wait();
133 for (i = 0; i < length; i++) {
134 if (!(i % 8))
135 spu_write_wait();
136 val = *froml;
137 writel(val, to);
138 froml++;
139 to++;
140 }
141}
142
143/* spu_disable - set spu registers to stop sound output */
144static void spu_disable(void)
145{
146 int i;
147 u32 regval;
148 spu_write_wait();
149 regval = readl(ARM_RESET_REGISTER);
150 regval |= 1;
151 spu_write_wait();
152 writel(regval, ARM_RESET_REGISTER);
153 for (i = 0; i < 64; i++) {
154 spu_write_wait();
155 regval = readl(SPU_REGISTER_BASE + (i * 0x80));
156 regval = (regval & ~0x4000) | 0x8000;
157 spu_write_wait();
158 writel(regval, SPU_REGISTER_BASE + (i * 0x80));
159 }
160}
161
162/* spu_enable - set spu registers to enable sound output */
163static void spu_enable(void)
164{
165 u32 regval = readl(ARM_RESET_REGISTER);
166 regval &= ~1;
167 spu_write_wait();
168 writel(regval, ARM_RESET_REGISTER);
169}
170
171/*
172 * Halt the sound processor, clear the memory,
173 * load some default ARM7 code, and then restart ARM7
174*/
175static void spu_reset(void)
176{
177 spu_disable();
178 spu_memset(0, 0, 0x200000 / 4);
179 /* Put ARM7 in endless loop */
180 ctrl_outl(0xea000002, SPU_MEMORY_BASE);
181 spu_enable();
182}
183
184/* aica_chn_start - write to spu to start playback */
185static void aica_chn_start(void)
186{
187 spu_write_wait();
188 writel(AICA_CMD_KICK | AICA_CMD_START, (u32 *) AICA_CONTROL_POINT);
189}
190
191/* aica_chn_halt - write to spu to halt playback */
192static void aica_chn_halt(void)
193{
194 spu_write_wait();
195 writel(AICA_CMD_KICK | AICA_CMD_STOP, (u32 *) AICA_CONTROL_POINT);
196}
197
198/* ALSA code below */
199static struct snd_pcm_hardware snd_pcm_aica_playback_hw = {
200 .info = (SNDRV_PCM_INFO_NONINTERLEAVED),
201 .formats =
202 (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE |
203 SNDRV_PCM_FMTBIT_IMA_ADPCM),
204 .rates = SNDRV_PCM_RATE_8000_48000,
205 .rate_min = 8000,
206 .rate_max = 48000,
207 .channels_min = 1,
208 .channels_max = 2,
209 .buffer_bytes_max = AICA_BUFFER_SIZE,
210 .period_bytes_min = AICA_PERIOD_SIZE,
211 .period_bytes_max = AICA_PERIOD_SIZE,
212 .periods_min = AICA_PERIOD_NUMBER,
213 .periods_max = AICA_PERIOD_NUMBER,
214};
215
216static int aica_dma_transfer(int channels, int buffer_size,
217 struct snd_pcm_substream *substream)
218{
219 int q, err, period_offset;
220 struct snd_card_aica *dreamcastcard;
221 struct snd_pcm_runtime *runtime;
222 err = 0;
223 dreamcastcard = substream->pcm->private_data;
224 period_offset = dreamcastcard->clicks;
225 period_offset %= (AICA_PERIOD_NUMBER / channels);
226 runtime = substream->runtime;
227 for (q = 0; q < channels; q++) {
228 err = dma_xfer(AICA_DMA_CHANNEL,
229 (unsigned long)(runtime->dma_area +
230 (AICA_BUFFER_SIZE * q) /
231 channels +
232 AICA_PERIOD_SIZE *
233 period_offset),
234 AICA_CHANNEL0_OFFSET + q * CHANNEL_OFFSET +
235 AICA_PERIOD_SIZE * period_offset,
236 buffer_size / channels, AICA_DMA_MODE);
237 if (unlikely(err < 0))
238 break;
239 dma_wait_for_completion(AICA_DMA_CHANNEL);
240 }
241 return err;
242}
243
244static void startup_aica(struct snd_card_aica *dreamcastcard)
245{
246 spu_memload(AICA_CHANNEL0_CONTROL_OFFSET,
247 dreamcastcard->channel,
248 sizeof(struct aica_channel));
249 aica_chn_start();
250}
251
252static void run_spu_dma(struct work_struct *work)
253{
254 int buffer_size;
255 struct snd_pcm_substream *substream;
256 struct snd_pcm_runtime *runtime;
257 struct snd_card_aica *dreamcastcard;
258 struct spu_work_holder *holder = container_of(work, struct spu_work_holder, spu_dma_work);
259 substream = holder-> sspointer;
260 dreamcastcard = substream->pcm->private_data;
261 runtime = substream->runtime;
262 if (unlikely(dreamcastcard->dma_check == 0)) {
263 buffer_size = frames_to_bytes(runtime, runtime->buffer_size);
264 if (runtime->channels > 1)
265 dreamcastcard->channel->flags |= 0x01;
266 aica_dma_transfer(runtime->channels, buffer_size, substream);
267 startup_aica(dreamcastcard);
268 dreamcastcard->clicks =
269 buffer_size / (AICA_PERIOD_SIZE * runtime->channels);
270 return;
271 } else {
272 aica_dma_transfer(runtime->channels,
273 AICA_PERIOD_SIZE * runtime->channels,
274 substream);
275 snd_pcm_period_elapsed(dreamcastcard->substream);
276 dreamcastcard->clicks++;
277 if (unlikely(dreamcastcard->clicks >= AICA_PERIOD_NUMBER))
278 {
279 dreamcastcard->clicks %= AICA_PERIOD_NUMBER;
280 }
281 mod_timer(&dreamcastcard->timer, jiffies + 1);
282 }
283}
284
285static void aica_period_elapsed(unsigned long timer_var)
286{
287 /*timer function - so cannot sleep */
288 int play_period;
289 struct snd_pcm_runtime *runtime;
290 struct snd_pcm_substream *substream;
291 struct snd_card_aica *dreamcastcard;
292 substream = (struct snd_pcm_substream *)timer_var;
293 runtime = substream->runtime;
294 dreamcastcard = substream->pcm->private_data;
295 /* Have we played out an additional period? */
296 play_period =
297 frames_to_bytes(runtime,
298 readl
299 (AICA_CONTROL_CHANNEL_SAMPLE_NUMBER)) /
300 AICA_PERIOD_SIZE;
301 if (play_period == dreamcastcard->current_period) {
302 /* reschedule the timer */
303 mod_timer(&(dreamcastcard->timer), jiffies + 1);
304 return;
305 }
306 if (runtime->channels > 1)
307 dreamcastcard->current_period = play_period;
308 if (unlikely(dreamcastcard->dma_check == 0))
309 dreamcastcard->dma_check = 1;
310 queue_work(aica_queue, &(spu_working.spu_dma_work));
311}
312
313static void spu_begin_dma(struct snd_pcm_substream *substream)
314{
315 /* Must be atomic */
316 struct snd_card_aica *dreamcastcard;
317 struct snd_pcm_runtime *runtime;
318 runtime = substream->runtime;
319 dreamcastcard = substream->pcm->private_data;
320 /* Use queue to do the heavy lifting */
321 spu_working.sspointer = substream;
322 INIT_WORK(&(spu_working.spu_dma_work), run_spu_dma);
323 queue_work(aica_queue, &(spu_working.spu_dma_work));
324 /* Timer may already be running */
325 if (unlikely(dreamcastcard->timer.data)) {
326 mod_timer(&dreamcastcard->timer, jiffies + 4);
327 return;
328 }
329 init_timer(&(dreamcastcard->timer));
330 dreamcastcard->timer.data = (unsigned long)substream;
331 dreamcastcard->timer.function = aica_period_elapsed;
332 dreamcastcard->timer.expires = jiffies + 4;
333 add_timer(&(dreamcastcard->timer));
334}
335
336static int snd_aicapcm_pcm_open(struct snd_pcm_substream
337 *substream)
338{
339 struct snd_pcm_runtime *runtime;
340 struct aica_channel *channel;
341 struct snd_card_aica *dreamcastcard;
342 if (!enable)
343 return -ENOENT;
344 dreamcastcard = substream->pcm->private_data;
345 channel = kmalloc(sizeof(struct aica_channel), GFP_KERNEL);
346 if (!channel)
347 return -ENOMEM;
348 /* set defaults for channel */
349 channel->sfmt = SM_8BIT;
350 channel->cmd = AICA_CMD_START;
351 channel->vol = dreamcastcard->master_volume;
352 channel->pan = 0x80;
353 channel->pos = 0;
354 channel->flags = 0; /* default to mono */
355 dreamcastcard->channel = channel;
356 runtime = substream->runtime;
357 runtime->hw = snd_pcm_aica_playback_hw;
358 spu_enable();
359 dreamcastcard->clicks = 0;
360 dreamcastcard->current_period = 0;
361 dreamcastcard->dma_check = 0;
362 return 0;
363}
364
365static int snd_aicapcm_pcm_close(struct snd_pcm_substream
366 *substream)
367{
368 struct snd_card_aica *dreamcastcard = substream->pcm->private_data;
369 del_timer(&dreamcastcard->timer);
370 kfree(dreamcastcard->channel);
371 spu_disable();
372 return 0;
373}
374
375static int snd_aicapcm_pcm_hw_free(struct snd_pcm_substream
376 *substream)
377{
378 /* Free the DMA buffer */
379 return snd_pcm_lib_free_pages(substream);
380}
381
382static int snd_aicapcm_pcm_hw_params(struct snd_pcm_substream
383 *substream, struct snd_pcm_hw_params
384 *hw_params)
385{
386 /* Allocate a DMA buffer using ALSA built-ins */
387 return
388 snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
389}
390
391static int snd_aicapcm_pcm_prepare(struct snd_pcm_substream
392 *substream)
393{
394 struct snd_card_aica *dreamcastcard = substream->pcm->private_data;
395 if ((substream->runtime)->format == SNDRV_PCM_FORMAT_S16_LE)
396 dreamcastcard->channel->sfmt = SM_16BIT;
397 dreamcastcard->channel->freq = substream->runtime->rate;
398 dreamcastcard->substream = substream;
399 return 0;
400}
401
402static int snd_aicapcm_pcm_trigger(struct snd_pcm_substream
403 *substream, int cmd)
404{
405 struct snd_card_aica *dreamcastcard;
406 switch (cmd) {
407 case SNDRV_PCM_TRIGGER_START:
408 spu_begin_dma(substream);
409 break;
410 case SNDRV_PCM_TRIGGER_STOP:
411 dreamcastcard = substream->pcm->private_data;
412 if (dreamcastcard->timer.data)
413 del_timer(&dreamcastcard->timer);
414 aica_chn_halt();
415 break;
416 default:
417 return -EINVAL;
418 }
419 return 0;
420}
421
422static unsigned long snd_aicapcm_pcm_pointer(struct snd_pcm_substream
423 *substream)
424{
425 return readl(AICA_CONTROL_CHANNEL_SAMPLE_NUMBER);
426}
427
428static struct snd_pcm_ops snd_aicapcm_playback_ops = {
429 .open = snd_aicapcm_pcm_open,
430 .close = snd_aicapcm_pcm_close,
431 .ioctl = snd_pcm_lib_ioctl,
432 .hw_params = snd_aicapcm_pcm_hw_params,
433 .hw_free = snd_aicapcm_pcm_hw_free,
434 .prepare = snd_aicapcm_pcm_prepare,
435 .trigger = snd_aicapcm_pcm_trigger,
436 .pointer = snd_aicapcm_pcm_pointer,
437};
438
439/* TO DO: set up to handle more than one pcm instance */
440static int __init snd_aicapcmchip(struct snd_card_aica
441 *dreamcastcard, int pcm_index)
442{
443 struct snd_pcm *pcm;
444 int err;
445 /* AICA has no capture ability */
446 err =
447 snd_pcm_new(dreamcastcard->card, "AICA PCM", pcm_index, 1, 0, &pcm);
448 if (unlikely(err < 0))
449 return err;
450 pcm->private_data = dreamcastcard;
451 strcpy(pcm->name, "AICA PCM");
452 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
453 &snd_aicapcm_playback_ops);
454 /* Allocate the DMA buffers */
455 err =
456 snd_pcm_lib_preallocate_pages_for_all(pcm,
457 SNDRV_DMA_TYPE_CONTINUOUS,
458 snd_dma_continuous_data
459 (GFP_KERNEL),
460 AICA_BUFFER_SIZE,
461 AICA_BUFFER_SIZE);
462 return err;
463}
464
465/* Mixer controls */
466static int aica_pcmswitch_info(struct snd_kcontrol *kcontrol,
467 struct snd_ctl_elem_info *uinfo)
468{
469 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
470 uinfo->count = 1;
471 uinfo->value.integer.min = 0;
472 uinfo->value.integer.max = 1;
473 return 0;
474}
475
476static int aica_pcmswitch_get(struct snd_kcontrol *kcontrol,
477 struct snd_ctl_elem_value *ucontrol)
478{
479 ucontrol->value.integer.value[0] = 1; /* TO DO: Fix me */
480 return 0;
481}
482
483static int aica_pcmswitch_put(struct snd_kcontrol *kcontrol,
484 struct snd_ctl_elem_value *ucontrol)
485{
486 if (ucontrol->value.integer.value[0] == 1)
487 return 0; /* TO DO: Fix me */
488 else
489 aica_chn_halt();
490 return 0;
491}
492
493static int aica_pcmvolume_info(struct snd_kcontrol *kcontrol,
494 struct snd_ctl_elem_info *uinfo)
495{
496 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
497 uinfo->count = 1;
498 uinfo->value.integer.min = 0;
499 uinfo->value.integer.max = 0xFF;
500 return 0;
501}
502
503static int aica_pcmvolume_get(struct snd_kcontrol *kcontrol,
504 struct snd_ctl_elem_value *ucontrol)
505{
506 struct snd_card_aica *dreamcastcard;
507 dreamcastcard = kcontrol->private_data;
508 if (unlikely(!dreamcastcard->channel))
509 return -ETXTBSY; /* we've not yet been set up */
510 ucontrol->value.integer.value[0] = dreamcastcard->channel->vol;
511 return 0;
512}
513
514static int aica_pcmvolume_put(struct snd_kcontrol *kcontrol,
515 struct snd_ctl_elem_value *ucontrol)
516{
517 struct snd_card_aica *dreamcastcard;
518 dreamcastcard = kcontrol->private_data;
519 if (unlikely(!dreamcastcard->channel))
520 return -ETXTBSY;
521 if (unlikely(dreamcastcard->channel->vol ==
522 ucontrol->value.integer.value[0]))
523 return 0;
524 dreamcastcard->channel->vol = ucontrol->value.integer.value[0];
525 dreamcastcard->master_volume = ucontrol->value.integer.value[0];
526 spu_memload(AICA_CHANNEL0_CONTROL_OFFSET,
527 dreamcastcard->channel,
528 sizeof(struct aica_channel));
529
530 return 1;
531}
532
533static struct snd_kcontrol_new snd_aica_pcmswitch_control __devinitdata = {
534 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
535 .name = "PCM Playback Switch",
536 .index = 0,
537 .info = aica_pcmswitch_info,
538 .get = aica_pcmswitch_get,
539 .put = aica_pcmswitch_put
540};
541
542static struct snd_kcontrol_new snd_aica_pcmvolume_control __devinitdata = {
543 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
544 .name = "PCM Playback Volume",
545 .index = 0,
546 .info = aica_pcmvolume_info,
547 .get = aica_pcmvolume_get,
548 .put = aica_pcmvolume_put
549};
550
551static int load_aica_firmware(void)
552{
553 int err;
554 const struct firmware *fw_entry;
555 spu_reset();
556 err = request_firmware(&fw_entry, "aica_firmware.bin", &pd->dev);
557 if (unlikely(err))
558 return err;
559 /* write firware into memory */
560 spu_disable();
561 spu_memload(0, fw_entry->data, fw_entry->size);
562 spu_enable();
563 release_firmware(fw_entry);
564 return err;
565}
566
567static int __devinit add_aicamixer_controls(struct snd_card_aica
568 *dreamcastcard)
569{
570 int err;
571 err = snd_ctl_add
572 (dreamcastcard->card,
573 snd_ctl_new1(&snd_aica_pcmvolume_control, dreamcastcard));
574 if (unlikely(err < 0))
575 return err;
576 err = snd_ctl_add
577 (dreamcastcard->card,
578 snd_ctl_new1(&snd_aica_pcmswitch_control, dreamcastcard));
579 if (unlikely(err < 0))
580 return err;
581 return 0;
582}
583
584static int snd_aica_remove(struct platform_device *devptr)
585{
586 struct snd_card_aica *dreamcastcard;
587 dreamcastcard = platform_get_drvdata(devptr);
588 if (unlikely(!dreamcastcard))
589 return -ENODEV;
590 snd_card_free(dreamcastcard->card);
591 kfree(dreamcastcard);
592 platform_set_drvdata(devptr, NULL);
593 return 0;
594}
595
596static int __init snd_aica_probe(struct platform_device *devptr)
597{
598 int err;
599 struct snd_card_aica *dreamcastcard;
600 dreamcastcard = kmalloc(sizeof(struct snd_card_aica), GFP_KERNEL);
601 if (unlikely(!dreamcastcard))
602 return -ENOMEM;
603 dreamcastcard->card =
604 snd_card_new(index, SND_AICA_DRIVER, THIS_MODULE, 0);
605 if (unlikely(!dreamcastcard->card)) {
606 kfree(dreamcastcard);
607 return -ENODEV;
608 }
609 strcpy(dreamcastcard->card->driver, "snd_aica");
610 strcpy(dreamcastcard->card->shortname, SND_AICA_DRIVER);
611 strcpy(dreamcastcard->card->longname,
612 "Yamaha AICA Super Intelligent Sound Processor for SEGA Dreamcast");
613 /* Load the PCM 'chip' */
614 err = snd_aicapcmchip(dreamcastcard, 0);
615 if (unlikely(err < 0))
616 goto freedreamcast;
617 snd_card_set_dev(dreamcastcard->card, &devptr->dev);
618 dreamcastcard->timer.data = 0;
619 dreamcastcard->channel = NULL;
620 /* Add basic controls */
621 err = add_aicamixer_controls(dreamcastcard);
622 if (unlikely(err < 0))
623 goto freedreamcast;
624 /* Register the card with ALSA subsystem */
625 err = snd_card_register(dreamcastcard->card);
626 if (unlikely(err < 0))
627 goto freedreamcast;
628 platform_set_drvdata(devptr, dreamcastcard);
629 aica_queue = create_workqueue(CARD_NAME);
630 if (unlikely(!aica_queue))
631 goto freedreamcast;
632 snd_printk
633 ("ALSA Driver for Yamaha AICA Super Intelligent Sound Processor\n");
634 return 0;
635 freedreamcast:
636 snd_card_free(dreamcastcard->card);
637 kfree(dreamcastcard);
638 return err;
639}
640
641static struct platform_driver snd_aica_driver = {
642 .probe = snd_aica_probe,
643 .remove = snd_aica_remove,
644 .driver = {
645 .name = SND_AICA_DRIVER},
646};
647
648static int __init aica_init(void)
649{
650 int err;
651 err = platform_driver_register(&snd_aica_driver);
652 if (unlikely(err < 0))
653 return err;
654 pd = platform_device_register_simple(SND_AICA_DRIVER, -1,
655 aica_memory_space, 2);
656 if (unlikely(IS_ERR(pd))) {
657 platform_driver_unregister(&snd_aica_driver);
658 return PTR_ERR(pd);
659 }
660 /* Load the firmware */
661 return load_aica_firmware();
662}
663
664static void __exit aica_exit(void)
665{
666 /* Destroy the aica kernel thread */
667 destroy_workqueue(aica_queue);
668 platform_device_unregister(pd);
669 platform_driver_unregister(&snd_aica_driver);
670 /* Kill any sound still playing and reset ARM7 to safe state */
671 spu_reset();
672}
673
674module_init(aica_init);
675module_exit(aica_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-29 03:27:00 -0500