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Generic twl4030 power script for 3430 based boards.
[linux-ginger.git] / sound / isa / sb / sb16_csp.c
blob35f3d7b16536ee9dfc528c47fd1365575c3023d7
1 /*
2 * Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si>
3 * Takashi Iwai <tiwai@suse.de>
4 *
5 * SB16ASP/AWE32 CSP control
6 *
7 * CSP microcode loader:
8 * alsa-tools/sb16_csp/
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 *
24 */
25
26 #include <linux/delay.h>
27 #include <linux/init.h>
28 #include <linux/slab.h>
29 #include <sound/core.h>
30 #include <sound/control.h>
31 #include <sound/info.h>
32 #include <sound/sb16_csp.h>
33 #include <sound/initval.h>
34
35 MODULE_AUTHOR("Uros Bizjak <uros@kss-loka.si>");
36 MODULE_DESCRIPTION("ALSA driver for SB16 Creative Signal Processor");
37 MODULE_LICENSE("GPL");
38 MODULE_FIRMWARE("sb16/mulaw_main.csp");
39 MODULE_FIRMWARE("sb16/alaw_main.csp");
40 MODULE_FIRMWARE("sb16/ima_adpcm_init.csp");
41 MODULE_FIRMWARE("sb16/ima_adpcm_playback.csp");
42 MODULE_FIRMWARE("sb16/ima_adpcm_capture.csp");
43
44 #ifdef SNDRV_LITTLE_ENDIAN
45 #define CSP_HDR_VALUE(a,b,c,d) ((a) | ((b)<<8) | ((c)<<16) | ((d)<<24))
46 #else
47 #define CSP_HDR_VALUE(a,b,c,d) ((d) | ((c)<<8) | ((b)<<16) | ((a)<<24))
48 #endif
49
50 #define RIFF_HEADER CSP_HDR_VALUE('R', 'I', 'F', 'F')
51 #define CSP__HEADER CSP_HDR_VALUE('C', 'S', 'P', ' ')
52 #define LIST_HEADER CSP_HDR_VALUE('L', 'I', 'S', 'T')
53 #define FUNC_HEADER CSP_HDR_VALUE('f', 'u', 'n', 'c')
54 #define CODE_HEADER CSP_HDR_VALUE('c', 'o', 'd', 'e')
55 #define INIT_HEADER CSP_HDR_VALUE('i', 'n', 'i', 't')
56 #define MAIN_HEADER CSP_HDR_VALUE('m', 'a', 'i', 'n')
57
58 /*
59 * RIFF data format
60 */
61 struct riff_header {
62 __u32 name;
63 __u32 len;
64 };
65
66 struct desc_header {
67 struct riff_header info;
68 __u16 func_nr;
69 __u16 VOC_type;
70 __u16 flags_play_rec;
71 __u16 flags_16bit_8bit;
72 __u16 flags_stereo_mono;
73 __u16 flags_rates;
74 };
75
76 /*
77 * prototypes
78 */
79 static void snd_sb_csp_free(struct snd_hwdep *hw);
80 static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file);
81 static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg);
82 static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file);
83
84 static int csp_detect(struct snd_sb *chip, int *version);
85 static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val);
86 static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val);
87 static int read_register(struct snd_sb *chip, unsigned char reg);
88 static int set_mode_register(struct snd_sb *chip, unsigned char mode);
89 static int get_version(struct snd_sb *chip);
90
91 static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
92 struct snd_sb_csp_microcode __user * code);
93 static int snd_sb_csp_unload(struct snd_sb_csp * p);
94 static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags);
95 static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode);
96 static int snd_sb_csp_check_version(struct snd_sb_csp * p);
97
98 static int snd_sb_csp_use(struct snd_sb_csp * p);
99 static int snd_sb_csp_unuse(struct snd_sb_csp * p);
100 static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels);
101 static int snd_sb_csp_stop(struct snd_sb_csp * p);
102 static int snd_sb_csp_pause(struct snd_sb_csp * p);
103 static int snd_sb_csp_restart(struct snd_sb_csp * p);
104
105 static int snd_sb_qsound_build(struct snd_sb_csp * p);
106 static void snd_sb_qsound_destroy(struct snd_sb_csp * p);
107 static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p);
108
109 static int init_proc_entry(struct snd_sb_csp * p, int device);
110 static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer);
111
112 /*
113 * Detect CSP chip and create a new instance
114 */
115 int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep)
116 {
117 struct snd_sb_csp *p;
118 int uninitialized_var(version);
119 int err;
120 struct snd_hwdep *hw;
121
122 if (rhwdep)
123 *rhwdep = NULL;
124
125 if (csp_detect(chip, &version))
126 return -ENODEV;
127
128 if ((err = snd_hwdep_new(chip->card, "SB16-CSP", device, &hw)) < 0)
129 return err;
130
131 if ((p = kzalloc(sizeof(*p), GFP_KERNEL)) == NULL) {
132 snd_device_free(chip->card, hw);
133 return -ENOMEM;
134 }
135 p->chip = chip;
136 p->version = version;
137
138 /* CSP operators */
139 p->ops.csp_use = snd_sb_csp_use;
140 p->ops.csp_unuse = snd_sb_csp_unuse;
141 p->ops.csp_autoload = snd_sb_csp_autoload;
142 p->ops.csp_start = snd_sb_csp_start;
143 p->ops.csp_stop = snd_sb_csp_stop;
144 p->ops.csp_qsound_transfer = snd_sb_csp_qsound_transfer;
145
146 mutex_init(&p->access_mutex);
147 sprintf(hw->name, "CSP v%d.%d", (version >> 4), (version & 0x0f));
148 hw->iface = SNDRV_HWDEP_IFACE_SB16CSP;
149 hw->private_data = p;
150 hw->private_free = snd_sb_csp_free;
151
152 /* operators - only write/ioctl */
153 hw->ops.open = snd_sb_csp_open;
154 hw->ops.ioctl = snd_sb_csp_ioctl;
155 hw->ops.release = snd_sb_csp_release;
156
157 /* create a proc entry */
158 init_proc_entry(p, device);
159 if (rhwdep)
160 *rhwdep = hw;
161 return 0;
162 }
163
164 /*
165 * free_private for hwdep instance
166 */
167 static void snd_sb_csp_free(struct snd_hwdep *hwdep)
168 {
169 int i;
170 struct snd_sb_csp *p = hwdep->private_data;
171 if (p) {
172 if (p->running & SNDRV_SB_CSP_ST_RUNNING)
173 snd_sb_csp_stop(p);
174 for (i = 0; i < ARRAY_SIZE(p->csp_programs); ++i)
175 release_firmware(p->csp_programs[i]);
176 kfree(p);
177 }
178 }
179
180 /* ------------------------------ */
181
182 /*
183 * open the device exclusively
184 */
185 static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file)
186 {
187 struct snd_sb_csp *p = hw->private_data;
188 return (snd_sb_csp_use(p));
189 }
190
191 /*
192 * ioctl for hwdep device:
193 */
194 static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg)
195 {
196 struct snd_sb_csp *p = hw->private_data;
197 struct snd_sb_csp_info info;
198 struct snd_sb_csp_start start_info;
199 int err;
200
201 snd_assert(p != NULL, return -EINVAL);
202
203 if (snd_sb_csp_check_version(p))
204 return -ENODEV;
205
206 switch (cmd) {
207 /* get information */
208 case SNDRV_SB_CSP_IOCTL_INFO:
209 *info.codec_name = *p->codec_name;
210 info.func_nr = p->func_nr;
211 info.acc_format = p->acc_format;
212 info.acc_channels = p->acc_channels;
213 info.acc_width = p->acc_width;
214 info.acc_rates = p->acc_rates;
215 info.csp_mode = p->mode;
216 info.run_channels = p->run_channels;
217 info.run_width = p->run_width;
218 info.version = p->version;
219 info.state = p->running;
220 if (copy_to_user((void __user *)arg, &info, sizeof(info)))
221 err = -EFAULT;
222 else
223 err = 0;
224 break;
225
226 /* load CSP microcode */
227 case SNDRV_SB_CSP_IOCTL_LOAD_CODE:
228 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
229 -EBUSY : snd_sb_csp_riff_load(p, (struct snd_sb_csp_microcode __user *) arg));
230 break;
231 case SNDRV_SB_CSP_IOCTL_UNLOAD_CODE:
232 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
233 -EBUSY : snd_sb_csp_unload(p));
234 break;
235
236 /* change CSP running state */
237 case SNDRV_SB_CSP_IOCTL_START:
238 if (copy_from_user(&start_info, (void __user *) arg, sizeof(start_info)))
239 err = -EFAULT;
240 else
241 err = snd_sb_csp_start(p, start_info.sample_width, start_info.channels);
242 break;
243 case SNDRV_SB_CSP_IOCTL_STOP:
244 err = snd_sb_csp_stop(p);
245 break;
246 case SNDRV_SB_CSP_IOCTL_PAUSE:
247 err = snd_sb_csp_pause(p);
248 break;
249 case SNDRV_SB_CSP_IOCTL_RESTART:
250 err = snd_sb_csp_restart(p);
251 break;
252 default:
253 err = -ENOTTY;
254 break;
255 }
256
257 return err;
258 }
259
260 /*
261 * close the device
262 */
263 static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file)
264 {
265 struct snd_sb_csp *p = hw->private_data;
266 return (snd_sb_csp_unuse(p));
267 }
268
269 /* ------------------------------ */
270
271 /*
272 * acquire device
273 */
274 static int snd_sb_csp_use(struct snd_sb_csp * p)
275 {
276 mutex_lock(&p->access_mutex);
277 if (p->used) {
278 mutex_unlock(&p->access_mutex);
279 return -EAGAIN;
280 }
281 p->used++;
282 mutex_unlock(&p->access_mutex);
283
284 return 0;
285
286 }
287
288 /*
289 * release device
290 */
291 static int snd_sb_csp_unuse(struct snd_sb_csp * p)
292 {
293 mutex_lock(&p->access_mutex);
294 p->used--;
295 mutex_unlock(&p->access_mutex);
296
297 return 0;
298 }
299
300 /*
301 * load microcode via ioctl:
302 * code is user-space pointer
303 */
304 static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
305 struct snd_sb_csp_microcode __user * mcode)
306 {
307 struct snd_sb_csp_mc_header info;
308
309 unsigned char __user *data_ptr;
310 unsigned char __user *data_end;
311 unsigned short func_nr = 0;
312
313 struct riff_header file_h, item_h, code_h;
314 __u32 item_type;
315 struct desc_header funcdesc_h;
316
317 unsigned long flags;
318 int err;
319
320 if (copy_from_user(&info, mcode, sizeof(info)))
321 return -EFAULT;
322 data_ptr = mcode->data;
323
324 if (copy_from_user(&file_h, data_ptr, sizeof(file_h)))
325 return -EFAULT;
326 if ((file_h.name != RIFF_HEADER) ||
327 (le32_to_cpu(file_h.len) >= SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE - sizeof(file_h))) {
328 snd_printd("%s: Invalid RIFF header\n", __func__);
329 return -EINVAL;
330 }
331 data_ptr += sizeof(file_h);
332 data_end = data_ptr + le32_to_cpu(file_h.len);
333
334 if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
335 return -EFAULT;
336 if (item_type != CSP__HEADER) {
337 snd_printd("%s: Invalid RIFF file type\n", __func__);
338 return -EINVAL;
339 }
340 data_ptr += sizeof (item_type);
341
342 for (; data_ptr < data_end; data_ptr += le32_to_cpu(item_h.len)) {
343 if (copy_from_user(&item_h, data_ptr, sizeof(item_h)))
344 return -EFAULT;
345 data_ptr += sizeof(item_h);
346 if (item_h.name != LIST_HEADER)
347 continue;
348
349 if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
350 return -EFAULT;
351 switch (item_type) {
352 case FUNC_HEADER:
353 if (copy_from_user(&funcdesc_h, data_ptr + sizeof(item_type), sizeof(funcdesc_h)))
354 return -EFAULT;
355 func_nr = le16_to_cpu(funcdesc_h.func_nr);
356 break;
357 case CODE_HEADER:
358 if (func_nr != info.func_req)
359 break; /* not required function, try next */
360 data_ptr += sizeof(item_type);
361
362 /* destroy QSound mixer element */
363 if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
364 snd_sb_qsound_destroy(p);
365 }
366 /* Clear all flags */
367 p->running = 0;
368 p->mode = 0;
369
370 /* load microcode blocks */
371 for (;;) {
372 if (data_ptr >= data_end)
373 return -EINVAL;
374 if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
375 return -EFAULT;
376
377 /* init microcode blocks */
378 if (code_h.name != INIT_HEADER)
379 break;
380 data_ptr += sizeof(code_h);
381 err = snd_sb_csp_load_user(p, data_ptr, le32_to_cpu(code_h.len),
382 SNDRV_SB_CSP_LOAD_INITBLOCK);
383 if (err)
384 return err;
385 data_ptr += le32_to_cpu(code_h.len);
386 }
387 /* main microcode block */
388 if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
389 return -EFAULT;
390
391 if (code_h.name != MAIN_HEADER) {
392 snd_printd("%s: Missing 'main' microcode\n", __func__);
393 return -EINVAL;
394 }
395 data_ptr += sizeof(code_h);
396 err = snd_sb_csp_load_user(p, data_ptr,
397 le32_to_cpu(code_h.len), 0);
398 if (err)
399 return err;
400
401 /* fill in codec header */
402 strlcpy(p->codec_name, info.codec_name, sizeof(p->codec_name));
403 p->func_nr = func_nr;
404 p->mode = le16_to_cpu(funcdesc_h.flags_play_rec);
405 switch (le16_to_cpu(funcdesc_h.VOC_type)) {
406 case 0x0001: /* QSound decoder */
407 if (le16_to_cpu(funcdesc_h.flags_play_rec) == SNDRV_SB_CSP_MODE_DSP_WRITE) {
408 if (snd_sb_qsound_build(p) == 0)
409 /* set QSound flag and clear all other mode flags */
410 p->mode = SNDRV_SB_CSP_MODE_QSOUND;
411 }
412 p->acc_format = 0;
413 break;
414 case 0x0006: /* A Law codec */
415 p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
416 break;
417 case 0x0007: /* Mu Law codec */
418 p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
419 break;
420 case 0x0011: /* what Creative thinks is IMA ADPCM codec */
421 case 0x0200: /* Creative ADPCM codec */
422 p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
423 break;
424 case 201: /* Text 2 Speech decoder */
425 /* TODO: Text2Speech handling routines */
426 p->acc_format = 0;
427 break;
428 case 0x0202: /* Fast Speech 8 codec */
429 case 0x0203: /* Fast Speech 10 codec */
430 p->acc_format = SNDRV_PCM_FMTBIT_SPECIAL;
431 break;
432 default: /* other codecs are unsupported */
433 p->acc_format = p->acc_width = p->acc_rates = 0;
434 p->mode = 0;
435 snd_printd("%s: Unsupported CSP codec type: 0x%04x\n",
436 __func__,
437 le16_to_cpu(funcdesc_h.VOC_type));
438 return -EINVAL;
439 }
440 p->acc_channels = le16_to_cpu(funcdesc_h.flags_stereo_mono);
441 p->acc_width = le16_to_cpu(funcdesc_h.flags_16bit_8bit);
442 p->acc_rates = le16_to_cpu(funcdesc_h.flags_rates);
443
444 /* Decouple CSP from IRQ and DMAREQ lines */
445 spin_lock_irqsave(&p->chip->reg_lock, flags);
446 set_mode_register(p->chip, 0xfc);
447 set_mode_register(p->chip, 0x00);
448 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
449
450 /* finished loading successfully */
451 p->running = SNDRV_SB_CSP_ST_LOADED; /* set LOADED flag */
452 return 0;
453 }
454 }
455 snd_printd("%s: Function #%d not found\n", __func__, info.func_req);
456 return -EINVAL;
457 }
458
459 /*
460 * unload CSP microcode
461 */
462 static int snd_sb_csp_unload(struct snd_sb_csp * p)
463 {
464 if (p->running & SNDRV_SB_CSP_ST_RUNNING)
465 return -EBUSY;
466 if (!(p->running & SNDRV_SB_CSP_ST_LOADED))
467 return -ENXIO;
468
469 /* clear supported formats */
470 p->acc_format = 0;
471 p->acc_channels = p->acc_width = p->acc_rates = 0;
472 /* destroy QSound mixer element */
473 if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
474 snd_sb_qsound_destroy(p);
475 }
476 /* clear all flags */
477 p->running = 0;
478 p->mode = 0;
479 return 0;
480 }
481
482 /*
483 * send command sequence to DSP
484 */
485 static inline int command_seq(struct snd_sb *chip, const unsigned char *seq, int size)
486 {
487 int i;
488 for (i = 0; i < size; i++) {
489 if (!snd_sbdsp_command(chip, seq[i]))
490 return -EIO;
491 }
492 return 0;
493 }
494
495 /*
496 * set CSP codec parameter
497 */
498 static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val)
499 {
500 unsigned char dsp_cmd[3];
501
502 dsp_cmd[0] = 0x05; /* CSP set codec parameter */
503 dsp_cmd[1] = val; /* Parameter value */
504 dsp_cmd[2] = par; /* Parameter */
505 command_seq(chip, dsp_cmd, 3);
506 snd_sbdsp_command(chip, 0x03); /* DSP read? */
507 if (snd_sbdsp_get_byte(chip) != par)
508 return -EIO;
509 return 0;
510 }
511
512 /*
513 * set CSP register
514 */
515 static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val)
516 {
517 unsigned char dsp_cmd[3];
518
519 dsp_cmd[0] = 0x0e; /* CSP set register */
520 dsp_cmd[1] = reg; /* CSP Register */
521 dsp_cmd[2] = val; /* value */
522 return command_seq(chip, dsp_cmd, 3);
523 }
524
525 /*
526 * read CSP register
527 * return < 0 -> error
528 */
529 static int read_register(struct snd_sb *chip, unsigned char reg)
530 {
531 unsigned char dsp_cmd[2];
532
533 dsp_cmd[0] = 0x0f; /* CSP read register */
534 dsp_cmd[1] = reg; /* CSP Register */
535 command_seq(chip, dsp_cmd, 2);
536 return snd_sbdsp_get_byte(chip); /* Read DSP value */
537 }
538
539 /*
540 * set CSP mode register
541 */
542 static int set_mode_register(struct snd_sb *chip, unsigned char mode)
543 {
544 unsigned char dsp_cmd[2];
545
546 dsp_cmd[0] = 0x04; /* CSP set mode register */
547 dsp_cmd[1] = mode; /* mode */
548 return command_seq(chip, dsp_cmd, 2);
549 }
550
551 /*
552 * Detect CSP
553 * return 0 if CSP exists.
554 */
555 static int csp_detect(struct snd_sb *chip, int *version)
556 {
557 unsigned char csp_test1, csp_test2;
558 unsigned long flags;
559 int result = -ENODEV;
560
561 spin_lock_irqsave(&chip->reg_lock, flags);
562
563 set_codec_parameter(chip, 0x00, 0x00);
564 set_mode_register(chip, 0xfc); /* 0xfc = ?? */
565
566 csp_test1 = read_register(chip, 0x83);
567 set_register(chip, 0x83, ~csp_test1);
568 csp_test2 = read_register(chip, 0x83);
569 if (csp_test2 != (csp_test1 ^ 0xff))
570 goto __fail;
571
572 set_register(chip, 0x83, csp_test1);
573 csp_test2 = read_register(chip, 0x83);
574 if (csp_test2 != csp_test1)
575 goto __fail;
576
577 set_mode_register(chip, 0x00); /* 0x00 = ? */
578
579 *version = get_version(chip);
580 snd_sbdsp_reset(chip); /* reset DSP after getversion! */
581 if (*version >= 0x10 && *version <= 0x1f)
582 result = 0; /* valid version id */
583
584 __fail:
585 spin_unlock_irqrestore(&chip->reg_lock, flags);
586 return result;
587 }
588
589 /*
590 * get CSP version number
591 */
592 static int get_version(struct snd_sb *chip)
593 {
594 unsigned char dsp_cmd[2];
595
596 dsp_cmd[0] = 0x08; /* SB_DSP_!something! */
597 dsp_cmd[1] = 0x03; /* get chip version id? */
598 command_seq(chip, dsp_cmd, 2);
599
600 return (snd_sbdsp_get_byte(chip));
601 }
602
603 /*
604 * check if the CSP version is valid
605 */
606 static int snd_sb_csp_check_version(struct snd_sb_csp * p)
607 {
608 if (p->version < 0x10 || p->version > 0x1f) {
609 snd_printd("%s: Invalid CSP version: 0x%x\n", __func__, p->version);
610 return 1;
611 }
612 return 0;
613 }
614
615 /*
616 * download microcode to CSP (microcode should have one "main" block).
617 */
618 static int snd_sb_csp_load(struct snd_sb_csp * p, const unsigned char *buf, int size, int load_flags)
619 {
620 int status, i;
621 int err;
622 int result = -EIO;
623 unsigned long flags;
624
625 spin_lock_irqsave(&p->chip->reg_lock, flags);
626 snd_sbdsp_command(p->chip, 0x01); /* CSP download command */
627 if (snd_sbdsp_get_byte(p->chip)) {
628 snd_printd("%s: Download command failed\n", __func__);
629 goto __fail;
630 }
631 /* Send CSP low byte (size - 1) */
632 snd_sbdsp_command(p->chip, (unsigned char)(size - 1));
633 /* Send high byte */
634 snd_sbdsp_command(p->chip, (unsigned char)((size - 1) >> 8));
635 /* send microcode sequence */
636 /* load from kernel space */
637 while (size--) {
638 if (!snd_sbdsp_command(p->chip, *buf++))
639 goto __fail;
640 }
641 if (snd_sbdsp_get_byte(p->chip))
642 goto __fail;
643
644 if (load_flags & SNDRV_SB_CSP_LOAD_INITBLOCK) {
645 i = 0;
646 /* some codecs (FastSpeech) take some time to initialize */
647 while (1) {
648 snd_sbdsp_command(p->chip, 0x03);
649 status = snd_sbdsp_get_byte(p->chip);
650 if (status == 0x55 || ++i >= 10)
651 break;
652 udelay (10);
653 }
654 if (status != 0x55) {
655 snd_printd("%s: Microcode initialization failed\n", __func__);
656 goto __fail;
657 }
658 } else {
659 /*
660 * Read mixer register SB_DSP4_DMASETUP after loading 'main' code.
661 * Start CSP chip if no 16bit DMA channel is set - some kind
662 * of autorun or perhaps a bugfix?
663 */
664 spin_lock(&p->chip->mixer_lock);
665 status = snd_sbmixer_read(p->chip, SB_DSP4_DMASETUP);
666 spin_unlock(&p->chip->mixer_lock);
667 if (!(status & (SB_DMASETUP_DMA7 | SB_DMASETUP_DMA6 | SB_DMASETUP_DMA5))) {
668 err = (set_codec_parameter(p->chip, 0xaa, 0x00) ||
669 set_codec_parameter(p->chip, 0xff, 0x00));
670 snd_sbdsp_reset(p->chip); /* really! */
671 if (err)
672 goto __fail;
673 set_mode_register(p->chip, 0xc0); /* c0 = STOP */
674 set_mode_register(p->chip, 0x70); /* 70 = RUN */
675 }
676 }
677 result = 0;
678
679 __fail:
680 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
681 return result;
682 }
683
684 static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags)
685 {
686 int err = -ENOMEM;
687 unsigned char *kbuf = kmalloc(size, GFP_KERNEL);
688 if (kbuf) {
689 if (copy_from_user(kbuf, buf, size))
690 err = -EFAULT;
691 else
692 err = snd_sb_csp_load(p, kbuf, size, load_flags);
693 kfree(kbuf);
694 }
695 return err;
696 }
697
698 static int snd_sb_csp_firmware_load(struct snd_sb_csp *p, int index, int flags)
699 {
700 static const char *const names[] = {
701 "sb16/mulaw_main.csp",
702 "sb16/alaw_main.csp",
703 "sb16/ima_adpcm_init.csp",
704 "sb16/ima_adpcm_playback.csp",
705 "sb16/ima_adpcm_capture.csp",
706 };
707 const struct firmware *program;
708
709 BUILD_BUG_ON(ARRAY_SIZE(names) != CSP_PROGRAM_COUNT);
710 program = p->csp_programs[index];
711 if (!program) {
712 int err = request_firmware(&program, names[index],
713 p->chip->card->dev);
714 if (err < 0)
715 return err;
716 p->csp_programs[index] = program;
717 }
718 return snd_sb_csp_load(p, program->data, program->size, flags);
719 }
720
721 /*
722 * autoload hardware codec if necessary
723 * return 0 if CSP is loaded and ready to run (p->running != 0)
724 */
725 static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode)
726 {
727 unsigned long flags;
728 int err = 0;
729
730 /* if CSP is running or manually loaded then exit */
731 if (p->running & (SNDRV_SB_CSP_ST_RUNNING | SNDRV_SB_CSP_ST_LOADED))
732 return -EBUSY;
733
734 /* autoload microcode only if requested hardware codec is not already loaded */
735 if (((1 << pcm_sfmt) & p->acc_format) && (play_rec_mode & p->mode)) {
736 p->running = SNDRV_SB_CSP_ST_AUTO;
737 } else {
738 switch (pcm_sfmt) {
739 case SNDRV_PCM_FORMAT_MU_LAW:
740 err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_MULAW, 0);
741 p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
742 p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
743 break;
744 case SNDRV_PCM_FORMAT_A_LAW:
745 err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ALAW, 0);
746 p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
747 p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
748 break;
749 case SNDRV_PCM_FORMAT_IMA_ADPCM:
750 err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ADPCM_INIT,
751 SNDRV_SB_CSP_LOAD_INITBLOCK);
752 if (err)
753 break;
754 if (play_rec_mode == SNDRV_SB_CSP_MODE_DSP_WRITE) {
755 err = snd_sb_csp_firmware_load
756 (p, CSP_PROGRAM_ADPCM_PLAYBACK, 0);
757 p->mode = SNDRV_SB_CSP_MODE_DSP_WRITE;
758 } else {
759 err = snd_sb_csp_firmware_load
760 (p, CSP_PROGRAM_ADPCM_CAPTURE, 0);
761 p->mode = SNDRV_SB_CSP_MODE_DSP_READ;
762 }
763 p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
764 break;
765 default:
766 /* Decouple CSP from IRQ and DMAREQ lines */
767 if (p->running & SNDRV_SB_CSP_ST_AUTO) {
768 spin_lock_irqsave(&p->chip->reg_lock, flags);
769 set_mode_register(p->chip, 0xfc);
770 set_mode_register(p->chip, 0x00);
771 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
772 p->running = 0; /* clear autoloaded flag */
773 }
774 return -EINVAL;
775 }
776 if (err) {
777 p->acc_format = 0;
778 p->acc_channels = p->acc_width = p->acc_rates = 0;
779
780 p->running = 0; /* clear autoloaded flag */
781 p->mode = 0;
782 return (err);
783 } else {
784 p->running = SNDRV_SB_CSP_ST_AUTO; /* set autoloaded flag */
785 p->acc_width = SNDRV_SB_CSP_SAMPLE_16BIT; /* only 16 bit data */
786 p->acc_channels = SNDRV_SB_CSP_MONO | SNDRV_SB_CSP_STEREO;
787 p->acc_rates = SNDRV_SB_CSP_RATE_ALL; /* HW codecs accept all rates */
788 }
789
790 }
791 return (p->running & SNDRV_SB_CSP_ST_AUTO) ? 0 : -ENXIO;
792 }
793
794 /*
795 * start CSP
796 */
797 static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels)
798 {
799 unsigned char s_type; /* sample type */
800 unsigned char mixL, mixR;
801 int result = -EIO;
802 unsigned long flags;
803
804 if (!(p->running & (SNDRV_SB_CSP_ST_LOADED | SNDRV_SB_CSP_ST_AUTO))) {
805 snd_printd("%s: Microcode not loaded\n", __func__);
806 return -ENXIO;
807 }
808 if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
809 snd_printd("%s: CSP already running\n", __func__);
810 return -EBUSY;
811 }
812 if (!(sample_width & p->acc_width)) {
813 snd_printd("%s: Unsupported PCM sample width\n", __func__);
814 return -EINVAL;
815 }
816 if (!(channels & p->acc_channels)) {
817 snd_printd("%s: Invalid number of channels\n", __func__);
818 return -EINVAL;
819 }
820
821 /* Mute PCM volume */
822 spin_lock_irqsave(&p->chip->mixer_lock, flags);
823 mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
824 mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
825 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
826 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
827
828 spin_lock(&p->chip->reg_lock);
829 set_mode_register(p->chip, 0xc0); /* c0 = STOP */
830 set_mode_register(p->chip, 0x70); /* 70 = RUN */
831
832 s_type = 0x00;
833 if (channels == SNDRV_SB_CSP_MONO)
834 s_type = 0x11; /* 000n 000n (n = 1 if mono) */
835 if (sample_width == SNDRV_SB_CSP_SAMPLE_8BIT)
836 s_type |= 0x22; /* 00dX 00dX (d = 1 if 8 bit samples) */
837
838 if (set_codec_parameter(p->chip, 0x81, s_type)) {
839 snd_printd("%s: Set sample type command failed\n", __func__);
840 goto __fail;
841 }
842 if (set_codec_parameter(p->chip, 0x80, 0x00)) {
843 snd_printd("%s: Codec start command failed\n", __func__);
844 goto __fail;
845 }
846 p->run_width = sample_width;
847 p->run_channels = channels;
848
849 p->running |= SNDRV_SB_CSP_ST_RUNNING;
850
851 if (p->mode & SNDRV_SB_CSP_MODE_QSOUND) {
852 set_codec_parameter(p->chip, 0xe0, 0x01);
853 /* enable QSound decoder */
854 set_codec_parameter(p->chip, 0x00, 0xff);
855 set_codec_parameter(p->chip, 0x01, 0xff);
856 p->running |= SNDRV_SB_CSP_ST_QSOUND;
857 /* set QSound startup value */
858 snd_sb_csp_qsound_transfer(p);
859 }
860 result = 0;
861
862 __fail:
863 spin_unlock(&p->chip->reg_lock);
864
865 /* restore PCM volume */
866 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
867 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
868 spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
869
870 return result;
871 }
872
873 /*
874 * stop CSP
875 */
876 static int snd_sb_csp_stop(struct snd_sb_csp * p)
877 {
878 int result;
879 unsigned char mixL, mixR;
880 unsigned long flags;
881
882 if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
883 return 0;
884
885 /* Mute PCM volume */
886 spin_lock_irqsave(&p->chip->mixer_lock, flags);
887 mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
888 mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
889 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
890 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
891
892 spin_lock(&p->chip->reg_lock);
893 if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
894 set_codec_parameter(p->chip, 0xe0, 0x01);
895 /* disable QSound decoder */
896 set_codec_parameter(p->chip, 0x00, 0x00);
897 set_codec_parameter(p->chip, 0x01, 0x00);
898
899 p->running &= ~SNDRV_SB_CSP_ST_QSOUND;
900 }
901 result = set_mode_register(p->chip, 0xc0); /* c0 = STOP */
902 spin_unlock(&p->chip->reg_lock);
903
904 /* restore PCM volume */
905 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
906 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
907 spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
908
909 if (!(result))
910 p->running &= ~(SNDRV_SB_CSP_ST_PAUSED | SNDRV_SB_CSP_ST_RUNNING);
911 return result;
912 }
913
914 /*
915 * pause CSP codec and hold DMA transfer
916 */
917 static int snd_sb_csp_pause(struct snd_sb_csp * p)
918 {
919 int result;
920 unsigned long flags;
921
922 if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
923 return -EBUSY;
924
925 spin_lock_irqsave(&p->chip->reg_lock, flags);
926 result = set_codec_parameter(p->chip, 0x80, 0xff);
927 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
928 if (!(result))
929 p->running |= SNDRV_SB_CSP_ST_PAUSED;
930
931 return result;
932 }
933
934 /*
935 * restart CSP codec and resume DMA transfer
936 */
937 static int snd_sb_csp_restart(struct snd_sb_csp * p)
938 {
939 int result;
940 unsigned long flags;
941
942 if (!(p->running & SNDRV_SB_CSP_ST_PAUSED))
943 return -EBUSY;
944
945 spin_lock_irqsave(&p->chip->reg_lock, flags);
946 result = set_codec_parameter(p->chip, 0x80, 0x00);
947 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
948 if (!(result))
949 p->running &= ~SNDRV_SB_CSP_ST_PAUSED;
950
951 return result;
952 }
953
954 /* ------------------------------ */
955
956 /*
957 * QSound mixer control for PCM
958 */
959
960 #define snd_sb_qsound_switch_info snd_ctl_boolean_mono_info
961
962 static int snd_sb_qsound_switch_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
963 {
964 struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
965
966 ucontrol->value.integer.value[0] = p->q_enabled ? 1 : 0;
967 return 0;
968 }
969
970 static int snd_sb_qsound_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
971 {
972 struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
973 unsigned long flags;
974 int change;
975 unsigned char nval;
976
977 nval = ucontrol->value.integer.value[0] & 0x01;
978 spin_lock_irqsave(&p->q_lock, flags);
979 change = p->q_enabled != nval;
980 p->q_enabled = nval;
981 spin_unlock_irqrestore(&p->q_lock, flags);
982 return change;
983 }
984
985 static int snd_sb_qsound_space_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
986 {
987 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
988 uinfo->count = 2;
989 uinfo->value.integer.min = 0;
990 uinfo->value.integer.max = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
991 return 0;
992 }
993
994 static int snd_sb_qsound_space_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
995 {
996 struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
997 unsigned long flags;
998
999 spin_lock_irqsave(&p->q_lock, flags);
1000 ucontrol->value.integer.value[0] = p->qpos_left;
1001 ucontrol->value.integer.value[1] = p->qpos_right;
1002 spin_unlock_irqrestore(&p->q_lock, flags);
1003 return 0;
1004 }
1005
1006 static int snd_sb_qsound_space_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1007 {
1008 struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
1009 unsigned long flags;
1010 int change;
1011 unsigned char nval1, nval2;
1012
1013 nval1 = ucontrol->value.integer.value[0];
1014 if (nval1 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
1015 nval1 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1016 nval2 = ucontrol->value.integer.value[1];
1017 if (nval2 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
1018 nval2 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1019 spin_lock_irqsave(&p->q_lock, flags);
1020 change = p->qpos_left != nval1 || p->qpos_right != nval2;
1021 p->qpos_left = nval1;
1022 p->qpos_right = nval2;
1023 p->qpos_changed = change;
1024 spin_unlock_irqrestore(&p->q_lock, flags);
1025 return change;
1026 }
1027
1028 static struct snd_kcontrol_new snd_sb_qsound_switch = {
1029 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1030 .name = "3D Control - Switch",
1031 .info = snd_sb_qsound_switch_info,
1032 .get = snd_sb_qsound_switch_get,
1033 .put = snd_sb_qsound_switch_put
1034 };
1035
1036 static struct snd_kcontrol_new snd_sb_qsound_space = {
1037 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1038 .name = "3D Control - Space",
1039 .info = snd_sb_qsound_space_info,
1040 .get = snd_sb_qsound_space_get,
1041 .put = snd_sb_qsound_space_put
1042 };
1043
1044 static int snd_sb_qsound_build(struct snd_sb_csp * p)
1045 {
1046 struct snd_card *card;
1047 int err;
1048
1049 snd_assert(p != NULL, return -EINVAL);
1050
1051 card = p->chip->card;
1052 p->qpos_left = p->qpos_right = SNDRV_SB_CSP_QSOUND_MAX_RIGHT / 2;
1053 p->qpos_changed = 0;
1054
1055 spin_lock_init(&p->q_lock);
1056
1057 if ((err = snd_ctl_add(card, p->qsound_switch = snd_ctl_new1(&snd_sb_qsound_switch, p))) < 0)
1058 goto __error;
1059 if ((err = snd_ctl_add(card, p->qsound_space = snd_ctl_new1(&snd_sb_qsound_space, p))) < 0)
1060 goto __error;
1061
1062 return 0;
1063
1064 __error:
1065 snd_sb_qsound_destroy(p);
1066 return err;
1067 }
1068
1069 static void snd_sb_qsound_destroy(struct snd_sb_csp * p)
1070 {
1071 struct snd_card *card;
1072 unsigned long flags;
1073
1074 snd_assert(p != NULL, return);
1075
1076 card = p->chip->card;
1077
1078 down_write(&card->controls_rwsem);
1079 if (p->qsound_switch)
1080 snd_ctl_remove(card, p->qsound_switch);
1081 if (p->qsound_space)
1082 snd_ctl_remove(card, p->qsound_space);
1083 up_write(&card->controls_rwsem);
1084
1085 /* cancel pending transfer of QSound parameters */
1086 spin_lock_irqsave (&p->q_lock, flags);
1087 p->qpos_changed = 0;
1088 spin_unlock_irqrestore (&p->q_lock, flags);
1089 }
1090
1091 /*
1092 * Transfer qsound parameters to CSP,
1093 * function should be called from interrupt routine
1094 */
1095 static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p)
1096 {
1097 int err = -ENXIO;
1098
1099 spin_lock(&p->q_lock);
1100 if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1101 set_codec_parameter(p->chip, 0xe0, 0x01);
1102 /* left channel */
1103 set_codec_parameter(p->chip, 0x00, p->qpos_left);
1104 set_codec_parameter(p->chip, 0x02, 0x00);
1105 /* right channel */
1106 set_codec_parameter(p->chip, 0x00, p->qpos_right);
1107 set_codec_parameter(p->chip, 0x03, 0x00);
1108 err = 0;
1109 }
1110 p->qpos_changed = 0;
1111 spin_unlock(&p->q_lock);
1112 return err;
1113 }
1114
1115 /* ------------------------------ */
1116
1117 /*
1118 * proc interface
1119 */
1120 static int init_proc_entry(struct snd_sb_csp * p, int device)
1121 {
1122 char name[16];
1123 struct snd_info_entry *entry;
1124 sprintf(name, "cspD%d", device);
1125 if (! snd_card_proc_new(p->chip->card, name, &entry))
1126 snd_info_set_text_ops(entry, p, info_read);
1127 return 0;
1128 }
1129
1130 static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1131 {
1132 struct snd_sb_csp *p = entry->private_data;
1133
1134 snd_iprintf(buffer, "Creative Signal Processor [v%d.%d]\n", (p->version >> 4), (p->version & 0x0f));
1135 snd_iprintf(buffer, "State: %cx%c%c%c\n", ((p->running & SNDRV_SB_CSP_ST_QSOUND) ? 'Q' : '-'),
1136 ((p->running & SNDRV_SB_CSP_ST_PAUSED) ? 'P' : '-'),
1137 ((p->running & SNDRV_SB_CSP_ST_RUNNING) ? 'R' : '-'),
1138 ((p->running & SNDRV_SB_CSP_ST_LOADED) ? 'L' : '-'));
1139 if (p->running & SNDRV_SB_CSP_ST_LOADED) {
1140 snd_iprintf(buffer, "Codec: %s [func #%d]\n", p->codec_name, p->func_nr);
1141 snd_iprintf(buffer, "Sample rates: ");
1142 if (p->acc_rates == SNDRV_SB_CSP_RATE_ALL) {
1143 snd_iprintf(buffer, "All\n");
1144 } else {
1145 snd_iprintf(buffer, "%s%s%s%s\n",
1146 ((p->acc_rates & SNDRV_SB_CSP_RATE_8000) ? "8000Hz " : ""),
1147 ((p->acc_rates & SNDRV_SB_CSP_RATE_11025) ? "11025Hz " : ""),
1148 ((p->acc_rates & SNDRV_SB_CSP_RATE_22050) ? "22050Hz " : ""),
1149 ((p->acc_rates & SNDRV_SB_CSP_RATE_44100) ? "44100Hz" : ""));
1150 }
1151 if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
1152 snd_iprintf(buffer, "QSound decoder %sabled\n",
1153 p->q_enabled ? "en" : "dis");
1154 } else {
1155 snd_iprintf(buffer, "PCM format ID: 0x%x (%s/%s) [%s/%s] [%s/%s]\n",
1156 p->acc_format,
1157 ((p->acc_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? "16bit" : "-"),
1158 ((p->acc_width & SNDRV_SB_CSP_SAMPLE_8BIT) ? "8bit" : "-"),
1159 ((p->acc_channels & SNDRV_SB_CSP_MONO) ? "mono" : "-"),
1160 ((p->acc_channels & SNDRV_SB_CSP_STEREO) ? "stereo" : "-"),
1161 ((p->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) ? "playback" : "-"),
1162 ((p->mode & SNDRV_SB_CSP_MODE_DSP_READ) ? "capture" : "-"));
1163 }
1164 }
1165 if (p->running & SNDRV_SB_CSP_ST_AUTO) {
1166 snd_iprintf(buffer, "Autoloaded Mu-Law, A-Law or Ima-ADPCM hardware codec\n");
1167 }
1168 if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
1169 snd_iprintf(buffer, "Processing %dbit %s PCM samples\n",
1170 ((p->run_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? 16 : 8),
1171 ((p->run_channels & SNDRV_SB_CSP_MONO) ? "mono" : "stereo"));
1172 }
1173 if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1174 snd_iprintf(buffer, "Qsound position: left = 0x%x, right = 0x%x\n",
1175 p->qpos_left, p->qpos_right);
1176 }
1177 }
1178
1179 /* */
1180
1181 EXPORT_SYMBOL(snd_sb_csp_new);
1182
1183 /*
1184 * INIT part
1185 */
1186
1187 static int __init alsa_sb_csp_init(void)
1188 {
1189 return 0;
1190 }
1191
1192 static void __exit alsa_sb_csp_exit(void)
1193 {
1194 }
1195
1196 module_init(alsa_sb_csp_init)
1197 module_exit(alsa_sb_csp_exit)
Linux for Ginger Game Console