1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 *
4 * Copyright Adrian McMenamin 2005, 2006, 2007
5 * <adrian@mcmen.demon.co.uk>
6 * Requires firmware (BSD licenced) available from:
7 * http://linuxdc.cvs.sourceforge.net/linuxdc/linux-sh-dc/sound/oss/aica/firmware/
8 * or the maintainer
9 */
10
11 #include <linux/init.h>
12 #include <linux/jiffies.h>
13 #include <linux/slab.h>
14 #include <linux/time.h>
15 #include <linux/wait.h>
16 #include <linux/module.h>
17 #include <linux/platform_device.h>
18 #include <linux/firmware.h>
19 #include <linux/timer.h>
20 #include <linux/delay.h>
21 #include <linux/workqueue.h>
22 #include <linux/io.h>
23 #include <sound/core.h>
24 #include <sound/control.h>
25 #include <sound/pcm.h>
26 #include <sound/initval.h>
27 #include <sound/info.h>
28 #include <asm/dma.h>
29 #include <mach/sysasic.h>
30 #include "aica.h"
31
32 MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk>");
33 MODULE_DESCRIPTION("Dreamcast AICA sound (pcm) driver");
34 MODULE_LICENSE("GPL");
35 MODULE_FIRMWARE("aica_firmware.bin");
36
37 /* module parameters */
38 #define CARD_NAME "AICA"
39 static int index = -1;
40 static char *id;
41 static bool enable = 1;
42 module_param(index, int, 0444);
43 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
44 module_param(id, charp, 0444);
45 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
46 module_param(enable, bool, 0644);
47 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
48
49 /* Simple platform device */
50 static struct platform_device *pd;
51 static struct resource aica_memory_space[2] = {
52 {
53 .name = "AICA ARM CONTROL",
54 .start = ARM_RESET_REGISTER,
55 .flags = IORESOURCE_MEM,
56 .end = ARM_RESET_REGISTER + 3,
57 },
58 {
59 .name = "AICA Sound RAM",
60 .start = SPU_MEMORY_BASE,
61 .flags = IORESOURCE_MEM,
62 .end = SPU_MEMORY_BASE + 0x200000 - 1,
63 },
64 };
65
66 /* SPU specific functions */
67 /* spu_write_wait - wait for G2-SH FIFO to clear */
spu_write_wait(void)68 static void spu_write_wait(void)
69 {
70 int time_count;
71 time_count = 0;
72 while (1) {
73 if (!(readl(G2_FIFO) & 0x11))
74 break;
75 /* To ensure hardware failure doesn't wedge kernel */
76 time_count++;
77 if (time_count > 0x10000) {
78 pr_warn("WARNING: G2 FIFO appears to be blocked.\n");
79 break;
80 }
81 }
82 }
83
84 /* spu_memset - write to memory in SPU address space */
spu_memset(u32 toi,u32 what,int length)85 static void spu_memset(u32 toi, u32 what, int length)
86 {
87 int i;
88 unsigned long flags;
89 if (snd_BUG_ON(length % 4))
90 return;
91 for (i = 0; i < length; i++) {
92 if (!(i % 8))
93 spu_write_wait();
94 local_irq_save(flags);
95 writel(what, toi + SPU_MEMORY_BASE);
96 local_irq_restore(flags);
97 toi++;
98 }
99 }
100
101 /* spu_memload - write to SPU address space */
spu_memload(u32 toi,const void * from,int length)102 static void spu_memload(u32 toi, const void *from, int length)
103 {
104 unsigned long flags;
105 const u32 *froml = from;
106 u32 __iomem *to = (u32 __iomem *) (SPU_MEMORY_BASE + toi);
107 int i;
108 u32 val;
109 length = DIV_ROUND_UP(length, 4);
110 spu_write_wait();
111 for (i = 0; i < length; i++) {
112 if (!(i % 8))
113 spu_write_wait();
114 val = *froml;
115 local_irq_save(flags);
116 writel(val, to);
117 local_irq_restore(flags);
118 froml++;
119 to++;
120 }
121 }
122
123 /* spu_disable - set spu registers to stop sound output */
spu_disable(void)124 static void spu_disable(void)
125 {
126 int i;
127 unsigned long flags;
128 u32 regval;
129 spu_write_wait();
130 regval = readl(ARM_RESET_REGISTER);
131 regval |= 1;
132 spu_write_wait();
133 local_irq_save(flags);
134 writel(regval, ARM_RESET_REGISTER);
135 local_irq_restore(flags);
136 for (i = 0; i < 64; i++) {
137 spu_write_wait();
138 regval = readl(SPU_REGISTER_BASE + (i * 0x80));
139 regval = (regval & ~0x4000) | 0x8000;
140 spu_write_wait();
141 local_irq_save(flags);
142 writel(regval, SPU_REGISTER_BASE + (i * 0x80));
143 local_irq_restore(flags);
144 }
145 }
146
147 /* spu_enable - set spu registers to enable sound output */
spu_enable(void)148 static void spu_enable(void)
149 {
150 unsigned long flags;
151 u32 regval = readl(ARM_RESET_REGISTER);
152 regval &= ~1;
153 spu_write_wait();
154 local_irq_save(flags);
155 writel(regval, ARM_RESET_REGISTER);
156 local_irq_restore(flags);
157 }
158
159 /*
160 * Halt the sound processor, clear the memory,
161 * load some default ARM7 code, and then restart ARM7
162 */
spu_reset(void)163 static void spu_reset(void)
164 {
165 unsigned long flags;
166 spu_disable();
167 spu_memset(0, 0, 0x200000 / 4);
168 /* Put ARM7 in endless loop */
169 local_irq_save(flags);
170 __raw_writel(0xea000002, SPU_MEMORY_BASE);
171 local_irq_restore(flags);
172 spu_enable();
173 }
174
175 /* aica_chn_start - write to spu to start playback */
aica_chn_start(void)176 static void aica_chn_start(void)
177 {
178 unsigned long flags;
179 spu_write_wait();
180 local_irq_save(flags);
181 writel(AICA_CMD_KICK | AICA_CMD_START, (u32 *) AICA_CONTROL_POINT);
182 local_irq_restore(flags);
183 }
184
185 /* aica_chn_halt - write to spu to halt playback */
aica_chn_halt(void)186 static void aica_chn_halt(void)
187 {
188 unsigned long flags;
189 spu_write_wait();
190 local_irq_save(flags);
191 writel(AICA_CMD_KICK | AICA_CMD_STOP, (u32 *) AICA_CONTROL_POINT);
192 local_irq_restore(flags);
193 }
194
195 /* ALSA code below */
196 static const struct snd_pcm_hardware snd_pcm_aica_playback_hw = {
197 .info = (SNDRV_PCM_INFO_NONINTERLEAVED),
198 .formats =
199 (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE |
200 SNDRV_PCM_FMTBIT_IMA_ADPCM),
201 .rates = SNDRV_PCM_RATE_8000_48000,
202 .rate_min = 8000,
203 .rate_max = 48000,
204 .channels_min = 1,
205 .channels_max = 2,
206 .buffer_bytes_max = AICA_BUFFER_SIZE,
207 .period_bytes_min = AICA_PERIOD_SIZE,
208 .period_bytes_max = AICA_PERIOD_SIZE,
209 .periods_min = AICA_PERIOD_NUMBER,
210 .periods_max = AICA_PERIOD_NUMBER,
211 };
212
aica_dma_transfer(int channels,int buffer_size,struct snd_pcm_substream * substream)213 static int aica_dma_transfer(int channels, int buffer_size,
214 struct snd_pcm_substream *substream)
215 {
216 int q, err, period_offset;
217 struct snd_card_aica *dreamcastcard;
218 struct snd_pcm_runtime *runtime;
219 unsigned long flags;
220 err = 0;
221 dreamcastcard = substream->pcm->private_data;
222 period_offset = dreamcastcard->clicks;
223 period_offset %= (AICA_PERIOD_NUMBER / channels);
224 runtime = substream->runtime;
225 for (q = 0; q < channels; q++) {
226 local_irq_save(flags);
227 err = dma_xfer(AICA_DMA_CHANNEL,
228 (unsigned long) (runtime->dma_area +
229 (AICA_BUFFER_SIZE * q) /
230 channels +
231 AICA_PERIOD_SIZE *
232 period_offset),
233 AICA_CHANNEL0_OFFSET + q * CHANNEL_OFFSET +
234 AICA_PERIOD_SIZE * period_offset,
235 buffer_size / channels, AICA_DMA_MODE);
236 if (unlikely(err < 0)) {
237 local_irq_restore(flags);
238 break;
239 }
240 dma_wait_for_completion(AICA_DMA_CHANNEL);
241 local_irq_restore(flags);
242 }
243 return err;
244 }
245
startup_aica(struct snd_card_aica * dreamcastcard)246 static void startup_aica(struct snd_card_aica *dreamcastcard)
247 {
248 spu_memload(AICA_CHANNEL0_CONTROL_OFFSET,
249 dreamcastcard->channel, sizeof(struct aica_channel));
250 aica_chn_start();
251 }
252
run_spu_dma(struct work_struct * work)253 static void run_spu_dma(struct work_struct *work)
254 {
255 int buffer_size;
256 struct snd_pcm_runtime *runtime;
257 struct snd_card_aica *dreamcastcard;
258 dreamcastcard =
259 container_of(work, struct snd_card_aica, spu_dma_work);
260 runtime = dreamcastcard->substream->runtime;
261 if (unlikely(dreamcastcard->dma_check == 0)) {
262 buffer_size =
263 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,
267 dreamcastcard->substream);
268 startup_aica(dreamcastcard);
269 dreamcastcard->clicks =
270 buffer_size / (AICA_PERIOD_SIZE * runtime->channels);
271 return;
272 } else {
273 aica_dma_transfer(runtime->channels,
274 AICA_PERIOD_SIZE * runtime->channels,
275 dreamcastcard->substream);
276 snd_pcm_period_elapsed(dreamcastcard->substream);
277 dreamcastcard->clicks++;
278 if (unlikely(dreamcastcard->clicks >= AICA_PERIOD_NUMBER))
279 dreamcastcard->clicks %= AICA_PERIOD_NUMBER;
280 if (snd_pcm_running(dreamcastcard->substream))
281 mod_timer(&dreamcastcard->timer, jiffies + 1);
282 }
283 }
284
aica_period_elapsed(struct timer_list * t)285 static void aica_period_elapsed(struct timer_list *t)
286 {
287 struct snd_card_aica *dreamcastcard = from_timer(dreamcastcard,
288 t, timer);
289 struct snd_pcm_substream *substream = dreamcastcard->substream;
290 /*timer function - so cannot sleep */
291 int play_period;
292 struct snd_pcm_runtime *runtime;
293 if (!snd_pcm_running(substream))
294 return;
295 runtime = substream->runtime;
296 dreamcastcard = substream->pcm->private_data;
297 /* Have we played out an additional period? */
298 play_period =
299 frames_to_bytes(runtime,
300 readl
301 (AICA_CONTROL_CHANNEL_SAMPLE_NUMBER)) /
302 AICA_PERIOD_SIZE;
303 if (play_period == dreamcastcard->current_period) {
304 /* reschedule the timer */
305 mod_timer(&(dreamcastcard->timer), jiffies + 1);
306 return;
307 }
308 if (runtime->channels > 1)
309 dreamcastcard->current_period = play_period;
310 if (unlikely(dreamcastcard->dma_check == 0))
311 dreamcastcard->dma_check = 1;
312 schedule_work(&(dreamcastcard->spu_dma_work));
313 }
314
spu_begin_dma(struct snd_pcm_substream * substream)315 static void spu_begin_dma(struct snd_pcm_substream *substream)
316 {
317 struct snd_card_aica *dreamcastcard;
318 struct snd_pcm_runtime *runtime;
319 runtime = substream->runtime;
320 dreamcastcard = substream->pcm->private_data;
321 /*get the queue to do the work */
322 schedule_work(&(dreamcastcard->spu_dma_work));
323 mod_timer(&dreamcastcard->timer, jiffies + 4);
324 }
325
snd_aicapcm_pcm_open(struct snd_pcm_substream * substream)326 static int snd_aicapcm_pcm_open(struct snd_pcm_substream
327 *substream)
328 {
329 struct snd_pcm_runtime *runtime;
330 struct aica_channel *channel;
331 struct snd_card_aica *dreamcastcard;
332 if (!enable)
333 return -ENOENT;
334 dreamcastcard = substream->pcm->private_data;
335 channel = kmalloc(sizeof(struct aica_channel), GFP_KERNEL);
336 if (!channel)
337 return -ENOMEM;
338 /* set defaults for channel */
339 channel->sfmt = SM_8BIT;
340 channel->cmd = AICA_CMD_START;
341 channel->vol = dreamcastcard->master_volume;
342 channel->pan = 0x80;
343 channel->pos = 0;
344 channel->flags = 0; /* default to mono */
345 dreamcastcard->channel = channel;
346 runtime = substream->runtime;
347 runtime->hw = snd_pcm_aica_playback_hw;
348 spu_enable();
349 dreamcastcard->clicks = 0;
350 dreamcastcard->current_period = 0;
351 dreamcastcard->dma_check = 0;
352 return 0;
353 }
354
snd_aicapcm_pcm_sync_stop(struct snd_pcm_substream * substream)355 static int snd_aicapcm_pcm_sync_stop(struct snd_pcm_substream *substream)
356 {
357 struct snd_card_aica *dreamcastcard = substream->pcm->private_data;
358
359 del_timer_sync(&dreamcastcard->timer);
360 cancel_work_sync(&dreamcastcard->spu_dma_work);
361 return 0;
362 }
363
snd_aicapcm_pcm_close(struct snd_pcm_substream * substream)364 static int snd_aicapcm_pcm_close(struct snd_pcm_substream
365 *substream)
366 {
367 struct snd_card_aica *dreamcastcard = substream->pcm->private_data;
368 dreamcastcard->substream = NULL;
369 kfree(dreamcastcard->channel);
370 spu_disable();
371 return 0;
372 }
373
snd_aicapcm_pcm_prepare(struct snd_pcm_substream * substream)374 static int snd_aicapcm_pcm_prepare(struct snd_pcm_substream
375 *substream)
376 {
377 struct snd_card_aica *dreamcastcard = substream->pcm->private_data;
378 if ((substream->runtime)->format == SNDRV_PCM_FORMAT_S16_LE)
379 dreamcastcard->channel->sfmt = SM_16BIT;
380 dreamcastcard->channel->freq = substream->runtime->rate;
381 dreamcastcard->substream = substream;
382 return 0;
383 }
384
snd_aicapcm_pcm_trigger(struct snd_pcm_substream * substream,int cmd)385 static int snd_aicapcm_pcm_trigger(struct snd_pcm_substream
386 *substream, int cmd)
387 {
388 switch (cmd) {
389 case SNDRV_PCM_TRIGGER_START:
390 spu_begin_dma(substream);
391 break;
392 case SNDRV_PCM_TRIGGER_STOP:
393 aica_chn_halt();
394 break;
395 default:
396 return -EINVAL;
397 }
398 return 0;
399 }
400
snd_aicapcm_pcm_pointer(struct snd_pcm_substream * substream)401 static unsigned long snd_aicapcm_pcm_pointer(struct snd_pcm_substream
402 *substream)
403 {
404 return readl(AICA_CONTROL_CHANNEL_SAMPLE_NUMBER);
405 }
406
407 static const struct snd_pcm_ops snd_aicapcm_playback_ops = {
408 .open = snd_aicapcm_pcm_open,
409 .close = snd_aicapcm_pcm_close,
410 .prepare = snd_aicapcm_pcm_prepare,
411 .trigger = snd_aicapcm_pcm_trigger,
412 .pointer = snd_aicapcm_pcm_pointer,
413 .sync_stop = snd_aicapcm_pcm_sync_stop,
414 };
415
416 /* TO DO: set up to handle more than one pcm instance */
snd_aicapcmchip(struct snd_card_aica * dreamcastcard,int pcm_index)417 static int __init snd_aicapcmchip(struct snd_card_aica
418 *dreamcastcard, int pcm_index)
419 {
420 struct snd_pcm *pcm;
421 int err;
422 /* AICA has no capture ability */
423 err =
424 snd_pcm_new(dreamcastcard->card, "AICA PCM", pcm_index, 1, 0,
425 &pcm);
426 if (unlikely(err < 0))
427 return err;
428 pcm->private_data = dreamcastcard;
429 strcpy(pcm->name, "AICA PCM");
430 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
431 &snd_aicapcm_playback_ops);
432 /* Allocate the DMA buffers */
433 snd_pcm_set_managed_buffer_all(pcm,
434 SNDRV_DMA_TYPE_CONTINUOUS,
435 NULL,
436 AICA_BUFFER_SIZE,
437 AICA_BUFFER_SIZE);
438 return 0;
439 }
440
441 /* Mixer controls */
442 #define aica_pcmswitch_info snd_ctl_boolean_mono_info
443
aica_pcmswitch_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)444 static int aica_pcmswitch_get(struct snd_kcontrol *kcontrol,
445 struct snd_ctl_elem_value *ucontrol)
446 {
447 ucontrol->value.integer.value[0] = 1; /* TO DO: Fix me */
448 return 0;
449 }
450
aica_pcmswitch_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)451 static int aica_pcmswitch_put(struct snd_kcontrol *kcontrol,
452 struct snd_ctl_elem_value *ucontrol)
453 {
454 if (ucontrol->value.integer.value[0] == 1)
455 return 0; /* TO DO: Fix me */
456 else
457 aica_chn_halt();
458 return 0;
459 }
460
aica_pcmvolume_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)461 static int aica_pcmvolume_info(struct snd_kcontrol *kcontrol,
462 struct snd_ctl_elem_info *uinfo)
463 {
464 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
465 uinfo->count = 1;
466 uinfo->value.integer.min = 0;
467 uinfo->value.integer.max = 0xFF;
468 return 0;
469 }
470
aica_pcmvolume_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)471 static int aica_pcmvolume_get(struct snd_kcontrol *kcontrol,
472 struct snd_ctl_elem_value *ucontrol)
473 {
474 struct snd_card_aica *dreamcastcard;
475 dreamcastcard = kcontrol->private_data;
476 if (unlikely(!dreamcastcard->channel))
477 return -ETXTBSY; /* we've not yet been set up */
478 ucontrol->value.integer.value[0] = dreamcastcard->channel->vol;
479 return 0;
480 }
481
aica_pcmvolume_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)482 static int aica_pcmvolume_put(struct snd_kcontrol *kcontrol,
483 struct snd_ctl_elem_value *ucontrol)
484 {
485 struct snd_card_aica *dreamcastcard;
486 unsigned int vol;
487 dreamcastcard = kcontrol->private_data;
488 if (unlikely(!dreamcastcard->channel))
489 return -ETXTBSY;
490 vol = ucontrol->value.integer.value[0];
491 if (vol > 0xff)
492 return -EINVAL;
493 if (unlikely(dreamcastcard->channel->vol == vol))
494 return 0;
495 dreamcastcard->channel->vol = ucontrol->value.integer.value[0];
496 dreamcastcard->master_volume = ucontrol->value.integer.value[0];
497 spu_memload(AICA_CHANNEL0_CONTROL_OFFSET,
498 dreamcastcard->channel, sizeof(struct aica_channel));
499 return 1;
500 }
501
502 static const struct snd_kcontrol_new snd_aica_pcmswitch_control = {
503 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
504 .name = "PCM Playback Switch",
505 .index = 0,
506 .info = aica_pcmswitch_info,
507 .get = aica_pcmswitch_get,
508 .put = aica_pcmswitch_put
509 };
510
511 static const struct snd_kcontrol_new snd_aica_pcmvolume_control = {
512 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
513 .name = "PCM Playback Volume",
514 .index = 0,
515 .info = aica_pcmvolume_info,
516 .get = aica_pcmvolume_get,
517 .put = aica_pcmvolume_put
518 };
519
load_aica_firmware(void)520 static int load_aica_firmware(void)
521 {
522 int err;
523 const struct firmware *fw_entry;
524 spu_reset();
525 err = request_firmware(&fw_entry, "aica_firmware.bin", &pd->dev);
526 if (unlikely(err))
527 return err;
528 /* write firmware into memory */
529 spu_disable();
530 spu_memload(0, fw_entry->data, fw_entry->size);
531 spu_enable();
532 release_firmware(fw_entry);
533 return err;
534 }
535
add_aicamixer_controls(struct snd_card_aica * dreamcastcard)536 static int add_aicamixer_controls(struct snd_card_aica *dreamcastcard)
537 {
538 int err;
539 err = snd_ctl_add
540 (dreamcastcard->card,
541 snd_ctl_new1(&snd_aica_pcmvolume_control, dreamcastcard));
542 if (unlikely(err < 0))
543 return err;
544 err = snd_ctl_add
545 (dreamcastcard->card,
546 snd_ctl_new1(&snd_aica_pcmswitch_control, dreamcastcard));
547 if (unlikely(err < 0))
548 return err;
549 return 0;
550 }
551
snd_aica_remove(struct platform_device * devptr)552 static void snd_aica_remove(struct platform_device *devptr)
553 {
554 struct snd_card_aica *dreamcastcard;
555 dreamcastcard = platform_get_drvdata(devptr);
556 snd_card_free(dreamcastcard->card);
557 kfree(dreamcastcard);
558 }
559
snd_aica_probe(struct platform_device * devptr)560 static int snd_aica_probe(struct platform_device *devptr)
561 {
562 int err;
563 struct snd_card_aica *dreamcastcard;
564 dreamcastcard = kzalloc(sizeof(struct snd_card_aica), GFP_KERNEL);
565 if (unlikely(!dreamcastcard))
566 return -ENOMEM;
567 err = snd_card_new(&devptr->dev, index, SND_AICA_DRIVER,
568 THIS_MODULE, 0, &dreamcastcard->card);
569 if (unlikely(err < 0)) {
570 kfree(dreamcastcard);
571 return err;
572 }
573 strcpy(dreamcastcard->card->driver, "snd_aica");
574 strcpy(dreamcastcard->card->shortname, SND_AICA_DRIVER);
575 strcpy(dreamcastcard->card->longname,
576 "Yamaha AICA Super Intelligent Sound Processor for SEGA Dreamcast");
577 /* Prepare to use the queue */
578 INIT_WORK(&(dreamcastcard->spu_dma_work), run_spu_dma);
579 timer_setup(&dreamcastcard->timer, aica_period_elapsed, 0);
580 /* Load the PCM 'chip' */
581 err = snd_aicapcmchip(dreamcastcard, 0);
582 if (unlikely(err < 0))
583 goto freedreamcast;
584 /* Add basic controls */
585 err = add_aicamixer_controls(dreamcastcard);
586 if (unlikely(err < 0))
587 goto freedreamcast;
588 /* Register the card with ALSA subsystem */
589 err = snd_card_register(dreamcastcard->card);
590 if (unlikely(err < 0))
591 goto freedreamcast;
592 platform_set_drvdata(devptr, dreamcastcard);
593 dev_info(&devptr->dev,
594 "ALSA Driver for Yamaha AICA Super Intelligent Sound Processor\n");
595 return 0;
596 freedreamcast:
597 snd_card_free(dreamcastcard->card);
598 kfree(dreamcastcard);
599 return err;
600 }
601
602 static struct platform_driver snd_aica_driver = {
603 .probe = snd_aica_probe,
604 .remove_new = snd_aica_remove,
605 .driver = {
606 .name = SND_AICA_DRIVER,
607 },
608 };
609
aica_init(void)610 static int __init aica_init(void)
611 {
612 int err;
613 err = platform_driver_register(&snd_aica_driver);
614 if (unlikely(err < 0))
615 return err;
616 pd = platform_device_register_simple(SND_AICA_DRIVER, -1,
617 aica_memory_space, 2);
618 if (IS_ERR(pd)) {
619 platform_driver_unregister(&snd_aica_driver);
620 return PTR_ERR(pd);
621 }
622 /* Load the firmware */
623 return load_aica_firmware();
624 }
625
aica_exit(void)626 static void __exit aica_exit(void)
627 {
628 platform_device_unregister(pd);
629 platform_driver_unregister(&snd_aica_driver);
630 /* Kill any sound still playing and reset ARM7 to safe state */
631 spu_reset();
632 }
633
634 module_init(aica_init);
635 module_exit(aica_exit);
636