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[POWERPC] Fix legacy serial search for opb bus ports
[wrt350n-kernel.git] / sound / isa / sb / sb16_csp.c
blobbed29ca22239edd7f1f47335da7797a100ffec6f
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 #ifndef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
39 MODULE_FIRMWARE("sb16/mulaw_main.csp");
40 MODULE_FIRMWARE("sb16/alaw_main.csp");
41 MODULE_FIRMWARE("sb16/ima_adpcm_init.csp");
42 MODULE_FIRMWARE("sb16/ima_adpcm_playback.csp");
43 MODULE_FIRMWARE("sb16/ima_adpcm_capture.csp");
44 #endif
45
46 #ifdef SNDRV_LITTLE_ENDIAN
47 #define CSP_HDR_VALUE(a,b,c,d) ((a) | ((b)<<8) | ((c)<<16) | ((d)<<24))
48 #else
49 #define CSP_HDR_VALUE(a,b,c,d) ((d) | ((c)<<8) | ((b)<<16) | ((a)<<24))
50 #endif
51
52 #define RIFF_HEADER CSP_HDR_VALUE('R', 'I', 'F', 'F')
53 #define CSP__HEADER CSP_HDR_VALUE('C', 'S', 'P', ' ')
54 #define LIST_HEADER CSP_HDR_VALUE('L', 'I', 'S', 'T')
55 #define FUNC_HEADER CSP_HDR_VALUE('f', 'u', 'n', 'c')
56 #define CODE_HEADER CSP_HDR_VALUE('c', 'o', 'd', 'e')
57 #define INIT_HEADER CSP_HDR_VALUE('i', 'n', 'i', 't')
58 #define MAIN_HEADER CSP_HDR_VALUE('m', 'a', 'i', 'n')
59
60 /*
61 * RIFF data format
62 */
63 struct riff_header {
64 __u32 name;
65 __u32 len;
66 };
67
68 struct desc_header {
69 struct riff_header info;
70 __u16 func_nr;
71 __u16 VOC_type;
72 __u16 flags_play_rec;
73 __u16 flags_16bit_8bit;
74 __u16 flags_stereo_mono;
75 __u16 flags_rates;
76 };
77
78 /*
79 * prototypes
80 */
81 static void snd_sb_csp_free(struct snd_hwdep *hw);
82 static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file);
83 static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg);
84 static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file);
85
86 static int csp_detect(struct snd_sb *chip, int *version);
87 static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val);
88 static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val);
89 static int read_register(struct snd_sb *chip, unsigned char reg);
90 static int set_mode_register(struct snd_sb *chip, unsigned char mode);
91 static int get_version(struct snd_sb *chip);
92
93 static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
94 struct snd_sb_csp_microcode __user * code);
95 static int snd_sb_csp_unload(struct snd_sb_csp * p);
96 static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags);
97 static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode);
98 static int snd_sb_csp_check_version(struct snd_sb_csp * p);
99
100 static int snd_sb_csp_use(struct snd_sb_csp * p);
101 static int snd_sb_csp_unuse(struct snd_sb_csp * p);
102 static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels);
103 static int snd_sb_csp_stop(struct snd_sb_csp * p);
104 static int snd_sb_csp_pause(struct snd_sb_csp * p);
105 static int snd_sb_csp_restart(struct snd_sb_csp * p);
106
107 static int snd_sb_qsound_build(struct snd_sb_csp * p);
108 static void snd_sb_qsound_destroy(struct snd_sb_csp * p);
109 static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p);
110
111 static int init_proc_entry(struct snd_sb_csp * p, int device);
112 static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer);
113
114 /*
115 * Detect CSP chip and create a new instance
116 */
117 int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep)
118 {
119 struct snd_sb_csp *p;
120 int uninitialized_var(version);
121 int err;
122 struct snd_hwdep *hw;
123
124 if (rhwdep)
125 *rhwdep = NULL;
126
127 if (csp_detect(chip, &version))
128 return -ENODEV;
129
130 if ((err = snd_hwdep_new(chip->card, "SB16-CSP", device, &hw)) < 0)
131 return err;
132
133 if ((p = kzalloc(sizeof(*p), GFP_KERNEL)) == NULL) {
134 snd_device_free(chip->card, hw);
135 return -ENOMEM;
136 }
137 p->chip = chip;
138 p->version = version;
139
140 /* CSP operators */
141 p->ops.csp_use = snd_sb_csp_use;
142 p->ops.csp_unuse = snd_sb_csp_unuse;
143 p->ops.csp_autoload = snd_sb_csp_autoload;
144 p->ops.csp_start = snd_sb_csp_start;
145 p->ops.csp_stop = snd_sb_csp_stop;
146 p->ops.csp_qsound_transfer = snd_sb_csp_qsound_transfer;
147
148 mutex_init(&p->access_mutex);
149 sprintf(hw->name, "CSP v%d.%d", (version >> 4), (version & 0x0f));
150 hw->iface = SNDRV_HWDEP_IFACE_SB16CSP;
151 hw->private_data = p;
152 hw->private_free = snd_sb_csp_free;
153
154 /* operators - only write/ioctl */
155 hw->ops.open = snd_sb_csp_open;
156 hw->ops.ioctl = snd_sb_csp_ioctl;
157 hw->ops.release = snd_sb_csp_release;
158
159 /* create a proc entry */
160 init_proc_entry(p, device);
161 if (rhwdep)
162 *rhwdep = hw;
163 return 0;
164 }
165
166 /*
167 * free_private for hwdep instance
168 */
169 static void snd_sb_csp_free(struct snd_hwdep *hwdep)
170 {
171 #ifndef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
172 int i;
173 #endif
174 struct snd_sb_csp *p = hwdep->private_data;
175 if (p) {
176 if (p->running & SNDRV_SB_CSP_ST_RUNNING)
177 snd_sb_csp_stop(p);
178 #ifndef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
179 for (i = 0; i < ARRAY_SIZE(p->csp_programs); ++i)
180 release_firmware(p->csp_programs[i]);
181 #endif
182 kfree(p);
183 }
184 }
185
186 /* ------------------------------ */
187
188 /*
189 * open the device exclusively
190 */
191 static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file)
192 {
193 struct snd_sb_csp *p = hw->private_data;
194 return (snd_sb_csp_use(p));
195 }
196
197 /*
198 * ioctl for hwdep device:
199 */
200 static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg)
201 {
202 struct snd_sb_csp *p = hw->private_data;
203 struct snd_sb_csp_info info;
204 struct snd_sb_csp_start start_info;
205 int err;
206
207 snd_assert(p != NULL, return -EINVAL);
208
209 if (snd_sb_csp_check_version(p))
210 return -ENODEV;
211
212 switch (cmd) {
213 /* get information */
214 case SNDRV_SB_CSP_IOCTL_INFO:
215 *info.codec_name = *p->codec_name;
216 info.func_nr = p->func_nr;
217 info.acc_format = p->acc_format;
218 info.acc_channels = p->acc_channels;
219 info.acc_width = p->acc_width;
220 info.acc_rates = p->acc_rates;
221 info.csp_mode = p->mode;
222 info.run_channels = p->run_channels;
223 info.run_width = p->run_width;
224 info.version = p->version;
225 info.state = p->running;
226 if (copy_to_user((void __user *)arg, &info, sizeof(info)))
227 err = -EFAULT;
228 else
229 err = 0;
230 break;
231
232 /* load CSP microcode */
233 case SNDRV_SB_CSP_IOCTL_LOAD_CODE:
234 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
235 -EBUSY : snd_sb_csp_riff_load(p, (struct snd_sb_csp_microcode __user *) arg));
236 break;
237 case SNDRV_SB_CSP_IOCTL_UNLOAD_CODE:
238 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
239 -EBUSY : snd_sb_csp_unload(p));
240 break;
241
242 /* change CSP running state */
243 case SNDRV_SB_CSP_IOCTL_START:
244 if (copy_from_user(&start_info, (void __user *) arg, sizeof(start_info)))
245 err = -EFAULT;
246 else
247 err = snd_sb_csp_start(p, start_info.sample_width, start_info.channels);
248 break;
249 case SNDRV_SB_CSP_IOCTL_STOP:
250 err = snd_sb_csp_stop(p);
251 break;
252 case SNDRV_SB_CSP_IOCTL_PAUSE:
253 err = snd_sb_csp_pause(p);
254 break;
255 case SNDRV_SB_CSP_IOCTL_RESTART:
256 err = snd_sb_csp_restart(p);
257 break;
258 default:
259 err = -ENOTTY;
260 break;
261 }
262
263 return err;
264 }
265
266 /*
267 * close the device
268 */
269 static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file)
270 {
271 struct snd_sb_csp *p = hw->private_data;
272 return (snd_sb_csp_unuse(p));
273 }
274
275 /* ------------------------------ */
276
277 /*
278 * acquire device
279 */
280 static int snd_sb_csp_use(struct snd_sb_csp * p)
281 {
282 mutex_lock(&p->access_mutex);
283 if (p->used) {
284 mutex_unlock(&p->access_mutex);
285 return -EAGAIN;
286 }
287 p->used++;
288 mutex_unlock(&p->access_mutex);
289
290 return 0;
291
292 }
293
294 /*
295 * release device
296 */
297 static int snd_sb_csp_unuse(struct snd_sb_csp * p)
298 {
299 mutex_lock(&p->access_mutex);
300 p->used--;
301 mutex_unlock(&p->access_mutex);
302
303 return 0;
304 }
305
306 /*
307 * load microcode via ioctl:
308 * code is user-space pointer
309 */
310 static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
311 struct snd_sb_csp_microcode __user * mcode)
312 {
313 struct snd_sb_csp_mc_header info;
314
315 unsigned char __user *data_ptr;
316 unsigned char __user *data_end;
317 unsigned short func_nr = 0;
318
319 struct riff_header file_h, item_h, code_h;
320 __u32 item_type;
321 struct desc_header funcdesc_h;
322
323 unsigned long flags;
324 int err;
325
326 if (copy_from_user(&info, mcode, sizeof(info)))
327 return -EFAULT;
328 data_ptr = mcode->data;
329
330 if (copy_from_user(&file_h, data_ptr, sizeof(file_h)))
331 return -EFAULT;
332 if ((file_h.name != RIFF_HEADER) ||
333 (le32_to_cpu(file_h.len) >= SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE - sizeof(file_h))) {
334 snd_printd("%s: Invalid RIFF header\n", __FUNCTION__);
335 return -EINVAL;
336 }
337 data_ptr += sizeof(file_h);
338 data_end = data_ptr + le32_to_cpu(file_h.len);
339
340 if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
341 return -EFAULT;
342 if (item_type != CSP__HEADER) {
343 snd_printd("%s: Invalid RIFF file type\n", __FUNCTION__);
344 return -EINVAL;
345 }
346 data_ptr += sizeof (item_type);
347
348 for (; data_ptr < data_end; data_ptr += le32_to_cpu(item_h.len)) {
349 if (copy_from_user(&item_h, data_ptr, sizeof(item_h)))
350 return -EFAULT;
351 data_ptr += sizeof(item_h);
352 if (item_h.name != LIST_HEADER)
353 continue;
354
355 if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
356 return -EFAULT;
357 switch (item_type) {
358 case FUNC_HEADER:
359 if (copy_from_user(&funcdesc_h, data_ptr + sizeof(item_type), sizeof(funcdesc_h)))
360 return -EFAULT;
361 func_nr = le16_to_cpu(funcdesc_h.func_nr);
362 break;
363 case CODE_HEADER:
364 if (func_nr != info.func_req)
365 break; /* not required function, try next */
366 data_ptr += sizeof(item_type);
367
368 /* destroy QSound mixer element */
369 if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
370 snd_sb_qsound_destroy(p);
371 }
372 /* Clear all flags */
373 p->running = 0;
374 p->mode = 0;
375
376 /* load microcode blocks */
377 for (;;) {
378 if (data_ptr >= data_end)
379 return -EINVAL;
380 if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
381 return -EFAULT;
382
383 /* init microcode blocks */
384 if (code_h.name != INIT_HEADER)
385 break;
386 data_ptr += sizeof(code_h);
387 err = snd_sb_csp_load_user(p, data_ptr, le32_to_cpu(code_h.len),
388 SNDRV_SB_CSP_LOAD_INITBLOCK);
389 if (err)
390 return err;
391 data_ptr += le32_to_cpu(code_h.len);
392 }
393 /* main microcode block */
394 if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
395 return -EFAULT;
396
397 if (code_h.name != MAIN_HEADER) {
398 snd_printd("%s: Missing 'main' microcode\n", __FUNCTION__);
399 return -EINVAL;
400 }
401 data_ptr += sizeof(code_h);
402 err = snd_sb_csp_load_user(p, data_ptr,
403 le32_to_cpu(code_h.len), 0);
404 if (err)
405 return err;
406
407 /* fill in codec header */
408 strlcpy(p->codec_name, info.codec_name, sizeof(p->codec_name));
409 p->func_nr = func_nr;
410 p->mode = le16_to_cpu(funcdesc_h.flags_play_rec);
411 switch (le16_to_cpu(funcdesc_h.VOC_type)) {
412 case 0x0001: /* QSound decoder */
413 if (le16_to_cpu(funcdesc_h.flags_play_rec) == SNDRV_SB_CSP_MODE_DSP_WRITE) {
414 if (snd_sb_qsound_build(p) == 0)
415 /* set QSound flag and clear all other mode flags */
416 p->mode = SNDRV_SB_CSP_MODE_QSOUND;
417 }
418 p->acc_format = 0;
419 break;
420 case 0x0006: /* A Law codec */
421 p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
422 break;
423 case 0x0007: /* Mu Law codec */
424 p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
425 break;
426 case 0x0011: /* what Creative thinks is IMA ADPCM codec */
427 case 0x0200: /* Creative ADPCM codec */
428 p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
429 break;
430 case 201: /* Text 2 Speech decoder */
431 /* TODO: Text2Speech handling routines */
432 p->acc_format = 0;
433 break;
434 case 0x0202: /* Fast Speech 8 codec */
435 case 0x0203: /* Fast Speech 10 codec */
436 p->acc_format = SNDRV_PCM_FMTBIT_SPECIAL;
437 break;
438 default: /* other codecs are unsupported */
439 p->acc_format = p->acc_width = p->acc_rates = 0;
440 p->mode = 0;
441 snd_printd("%s: Unsupported CSP codec type: 0x%04x\n",
442 __FUNCTION__,
443 le16_to_cpu(funcdesc_h.VOC_type));
444 return -EINVAL;
445 }
446 p->acc_channels = le16_to_cpu(funcdesc_h.flags_stereo_mono);
447 p->acc_width = le16_to_cpu(funcdesc_h.flags_16bit_8bit);
448 p->acc_rates = le16_to_cpu(funcdesc_h.flags_rates);
449
450 /* Decouple CSP from IRQ and DMAREQ lines */
451 spin_lock_irqsave(&p->chip->reg_lock, flags);
452 set_mode_register(p->chip, 0xfc);
453 set_mode_register(p->chip, 0x00);
454 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
455
456 /* finished loading successfully */
457 p->running = SNDRV_SB_CSP_ST_LOADED; /* set LOADED flag */
458 return 0;
459 }
460 }
461 snd_printd("%s: Function #%d not found\n", __FUNCTION__, info.func_req);
462 return -EINVAL;
463 }
464
465 /*
466 * unload CSP microcode
467 */
468 static int snd_sb_csp_unload(struct snd_sb_csp * p)
469 {
470 if (p->running & SNDRV_SB_CSP_ST_RUNNING)
471 return -EBUSY;
472 if (!(p->running & SNDRV_SB_CSP_ST_LOADED))
473 return -ENXIO;
474
475 /* clear supported formats */
476 p->acc_format = 0;
477 p->acc_channels = p->acc_width = p->acc_rates = 0;
478 /* destroy QSound mixer element */
479 if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
480 snd_sb_qsound_destroy(p);
481 }
482 /* clear all flags */
483 p->running = 0;
484 p->mode = 0;
485 return 0;
486 }
487
488 /*
489 * send command sequence to DSP
490 */
491 static inline int command_seq(struct snd_sb *chip, const unsigned char *seq, int size)
492 {
493 int i;
494 for (i = 0; i < size; i++) {
495 if (!snd_sbdsp_command(chip, seq[i]))
496 return -EIO;
497 }
498 return 0;
499 }
500
501 /*
502 * set CSP codec parameter
503 */
504 static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val)
505 {
506 unsigned char dsp_cmd[3];
507
508 dsp_cmd[0] = 0x05; /* CSP set codec parameter */
509 dsp_cmd[1] = val; /* Parameter value */
510 dsp_cmd[2] = par; /* Parameter */
511 command_seq(chip, dsp_cmd, 3);
512 snd_sbdsp_command(chip, 0x03); /* DSP read? */
513 if (snd_sbdsp_get_byte(chip) != par)
514 return -EIO;
515 return 0;
516 }
517
518 /*
519 * set CSP register
520 */
521 static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val)
522 {
523 unsigned char dsp_cmd[3];
524
525 dsp_cmd[0] = 0x0e; /* CSP set register */
526 dsp_cmd[1] = reg; /* CSP Register */
527 dsp_cmd[2] = val; /* value */
528 return command_seq(chip, dsp_cmd, 3);
529 }
530
531 /*
532 * read CSP register
533 * return < 0 -> error
534 */
535 static int read_register(struct snd_sb *chip, unsigned char reg)
536 {
537 unsigned char dsp_cmd[2];
538
539 dsp_cmd[0] = 0x0f; /* CSP read register */
540 dsp_cmd[1] = reg; /* CSP Register */
541 command_seq(chip, dsp_cmd, 2);
542 return snd_sbdsp_get_byte(chip); /* Read DSP value */
543 }
544
545 /*
546 * set CSP mode register
547 */
548 static int set_mode_register(struct snd_sb *chip, unsigned char mode)
549 {
550 unsigned char dsp_cmd[2];
551
552 dsp_cmd[0] = 0x04; /* CSP set mode register */
553 dsp_cmd[1] = mode; /* mode */
554 return command_seq(chip, dsp_cmd, 2);
555 }
556
557 /*
558 * Detect CSP
559 * return 0 if CSP exists.
560 */
561 static int csp_detect(struct snd_sb *chip, int *version)
562 {
563 unsigned char csp_test1, csp_test2;
564 unsigned long flags;
565 int result = -ENODEV;
566
567 spin_lock_irqsave(&chip->reg_lock, flags);
568
569 set_codec_parameter(chip, 0x00, 0x00);
570 set_mode_register(chip, 0xfc); /* 0xfc = ?? */
571
572 csp_test1 = read_register(chip, 0x83);
573 set_register(chip, 0x83, ~csp_test1);
574 csp_test2 = read_register(chip, 0x83);
575 if (csp_test2 != (csp_test1 ^ 0xff))
576 goto __fail;
577
578 set_register(chip, 0x83, csp_test1);
579 csp_test2 = read_register(chip, 0x83);
580 if (csp_test2 != csp_test1)
581 goto __fail;
582
583 set_mode_register(chip, 0x00); /* 0x00 = ? */
584
585 *version = get_version(chip);
586 snd_sbdsp_reset(chip); /* reset DSP after getversion! */
587 if (*version >= 0x10 && *version <= 0x1f)
588 result = 0; /* valid version id */
589
590 __fail:
591 spin_unlock_irqrestore(&chip->reg_lock, flags);
592 return result;
593 }
594
595 /*
596 * get CSP version number
597 */
598 static int get_version(struct snd_sb *chip)
599 {
600 unsigned char dsp_cmd[2];
601
602 dsp_cmd[0] = 0x08; /* SB_DSP_!something! */
603 dsp_cmd[1] = 0x03; /* get chip version id? */
604 command_seq(chip, dsp_cmd, 2);
605
606 return (snd_sbdsp_get_byte(chip));
607 }
608
609 /*
610 * check if the CSP version is valid
611 */
612 static int snd_sb_csp_check_version(struct snd_sb_csp * p)
613 {
614 if (p->version < 0x10 || p->version > 0x1f) {
615 snd_printd("%s: Invalid CSP version: 0x%x\n", __FUNCTION__, p->version);
616 return 1;
617 }
618 return 0;
619 }
620
621 /*
622 * download microcode to CSP (microcode should have one "main" block).
623 */
624 static int snd_sb_csp_load(struct snd_sb_csp * p, const unsigned char *buf, int size, int load_flags)
625 {
626 int status, i;
627 int err;
628 int result = -EIO;
629 unsigned long flags;
630
631 spin_lock_irqsave(&p->chip->reg_lock, flags);
632 snd_sbdsp_command(p->chip, 0x01); /* CSP download command */
633 if (snd_sbdsp_get_byte(p->chip)) {
634 snd_printd("%s: Download command failed\n", __FUNCTION__);
635 goto __fail;
636 }
637 /* Send CSP low byte (size - 1) */
638 snd_sbdsp_command(p->chip, (unsigned char)(size - 1));
639 /* Send high byte */
640 snd_sbdsp_command(p->chip, (unsigned char)((size - 1) >> 8));
641 /* send microcode sequence */
642 /* load from kernel space */
643 while (size--) {
644 if (!snd_sbdsp_command(p->chip, *buf++))
645 goto __fail;
646 }
647 if (snd_sbdsp_get_byte(p->chip))
648 goto __fail;
649
650 if (load_flags & SNDRV_SB_CSP_LOAD_INITBLOCK) {
651 i = 0;
652 /* some codecs (FastSpeech) take some time to initialize */
653 while (1) {
654 snd_sbdsp_command(p->chip, 0x03);
655 status = snd_sbdsp_get_byte(p->chip);
656 if (status == 0x55 || ++i >= 10)
657 break;
658 udelay (10);
659 }
660 if (status != 0x55) {
661 snd_printd("%s: Microcode initialization failed\n", __FUNCTION__);
662 goto __fail;
663 }
664 } else {
665 /*
666 * Read mixer register SB_DSP4_DMASETUP after loading 'main' code.
667 * Start CSP chip if no 16bit DMA channel is set - some kind
668 * of autorun or perhaps a bugfix?
669 */
670 spin_lock(&p->chip->mixer_lock);
671 status = snd_sbmixer_read(p->chip, SB_DSP4_DMASETUP);
672 spin_unlock(&p->chip->mixer_lock);
673 if (!(status & (SB_DMASETUP_DMA7 | SB_DMASETUP_DMA6 | SB_DMASETUP_DMA5))) {
674 err = (set_codec_parameter(p->chip, 0xaa, 0x00) ||
675 set_codec_parameter(p->chip, 0xff, 0x00));
676 snd_sbdsp_reset(p->chip); /* really! */
677 if (err)
678 goto __fail;
679 set_mode_register(p->chip, 0xc0); /* c0 = STOP */
680 set_mode_register(p->chip, 0x70); /* 70 = RUN */
681 }
682 }
683 result = 0;
684
685 __fail:
686 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
687 return result;
688 }
689
690 static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags)
691 {
692 int err = -ENOMEM;
693 unsigned char *kbuf = kmalloc(size, GFP_KERNEL);
694 if (kbuf) {
695 if (copy_from_user(kbuf, buf, size))
696 err = -EFAULT;
697 else
698 err = snd_sb_csp_load(p, kbuf, size, load_flags);
699 kfree(kbuf);
700 }
701 return err;
702 }
703
704 #ifdef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
705 #include "sb16_csp_codecs.h"
706
707 static const struct firmware snd_sb_csp_static_programs[] = {
708 { .data = mulaw_main, .size = sizeof mulaw_main },
709 { .data = alaw_main, .size = sizeof alaw_main },
710 { .data = ima_adpcm_init, .size = sizeof ima_adpcm_init },
711 { .data = ima_adpcm_playback, .size = sizeof ima_adpcm_playback },
712 { .data = ima_adpcm_capture, .size = sizeof ima_adpcm_capture },
713 };
714 #endif
715
716 static int snd_sb_csp_firmware_load(struct snd_sb_csp *p, int index, int flags)
717 {
718 static const char *const names[] = {
719 "sb16/mulaw_main.csp",
720 "sb16/alaw_main.csp",
721 "sb16/ima_adpcm_init.csp",
722 "sb16/ima_adpcm_playback.csp",
723 "sb16/ima_adpcm_capture.csp",
724 };
725 const struct firmware *program;
726
727 BUILD_BUG_ON(ARRAY_SIZE(names) != CSP_PROGRAM_COUNT);
728 program = p->csp_programs[index];
729 if (!program) {
730 #ifdef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
731 program = &snd_sb_csp_static_programs[index];
732 #else
733 int err = request_firmware(&program, names[index],
734 p->chip->card->dev);
735 if (err < 0)
736 return err;
737 #endif
738 p->csp_programs[index] = program;
739 }
740 return snd_sb_csp_load(p, program->data, program->size, flags);
741 }
742
743 /*
744 * autoload hardware codec if necessary
745 * return 0 if CSP is loaded and ready to run (p->running != 0)
746 */
747 static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode)
748 {
749 unsigned long flags;
750 int err = 0;
751
752 /* if CSP is running or manually loaded then exit */
753 if (p->running & (SNDRV_SB_CSP_ST_RUNNING | SNDRV_SB_CSP_ST_LOADED))
754 return -EBUSY;
755
756 /* autoload microcode only if requested hardware codec is not already loaded */
757 if (((1 << pcm_sfmt) & p->acc_format) && (play_rec_mode & p->mode)) {
758 p->running = SNDRV_SB_CSP_ST_AUTO;
759 } else {
760 switch (pcm_sfmt) {
761 case SNDRV_PCM_FORMAT_MU_LAW:
762 err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_MULAW, 0);
763 p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
764 p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
765 break;
766 case SNDRV_PCM_FORMAT_A_LAW:
767 err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ALAW, 0);
768 p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
769 p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
770 break;
771 case SNDRV_PCM_FORMAT_IMA_ADPCM:
772 err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ADPCM_INIT,
773 SNDRV_SB_CSP_LOAD_INITBLOCK);
774 if (err)
775 break;
776 if (play_rec_mode == SNDRV_SB_CSP_MODE_DSP_WRITE) {
777 err = snd_sb_csp_firmware_load
778 (p, CSP_PROGRAM_ADPCM_PLAYBACK, 0);
779 p->mode = SNDRV_SB_CSP_MODE_DSP_WRITE;
780 } else {
781 err = snd_sb_csp_firmware_load
782 (p, CSP_PROGRAM_ADPCM_CAPTURE, 0);
783 p->mode = SNDRV_SB_CSP_MODE_DSP_READ;
784 }
785 p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
786 break;
787 default:
788 /* Decouple CSP from IRQ and DMAREQ lines */
789 if (p->running & SNDRV_SB_CSP_ST_AUTO) {
790 spin_lock_irqsave(&p->chip->reg_lock, flags);
791 set_mode_register(p->chip, 0xfc);
792 set_mode_register(p->chip, 0x00);
793 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
794 p->running = 0; /* clear autoloaded flag */
795 }
796 return -EINVAL;
797 }
798 if (err) {
799 p->acc_format = 0;
800 p->acc_channels = p->acc_width = p->acc_rates = 0;
801
802 p->running = 0; /* clear autoloaded flag */
803 p->mode = 0;
804 return (err);
805 } else {
806 p->running = SNDRV_SB_CSP_ST_AUTO; /* set autoloaded flag */
807 p->acc_width = SNDRV_SB_CSP_SAMPLE_16BIT; /* only 16 bit data */
808 p->acc_channels = SNDRV_SB_CSP_MONO | SNDRV_SB_CSP_STEREO;
809 p->acc_rates = SNDRV_SB_CSP_RATE_ALL; /* HW codecs accept all rates */
810 }
811
812 }
813 return (p->running & SNDRV_SB_CSP_ST_AUTO) ? 0 : -ENXIO;
814 }
815
816 /*
817 * start CSP
818 */
819 static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels)
820 {
821 unsigned char s_type; /* sample type */
822 unsigned char mixL, mixR;
823 int result = -EIO;
824 unsigned long flags;
825
826 if (!(p->running & (SNDRV_SB_CSP_ST_LOADED | SNDRV_SB_CSP_ST_AUTO))) {
827 snd_printd("%s: Microcode not loaded\n", __FUNCTION__);
828 return -ENXIO;
829 }
830 if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
831 snd_printd("%s: CSP already running\n", __FUNCTION__);
832 return -EBUSY;
833 }
834 if (!(sample_width & p->acc_width)) {
835 snd_printd("%s: Unsupported PCM sample width\n", __FUNCTION__);
836 return -EINVAL;
837 }
838 if (!(channels & p->acc_channels)) {
839 snd_printd("%s: Invalid number of channels\n", __FUNCTION__);
840 return -EINVAL;
841 }
842
843 /* Mute PCM volume */
844 spin_lock_irqsave(&p->chip->mixer_lock, flags);
845 mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
846 mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
847 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
848 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
849
850 spin_lock(&p->chip->reg_lock);
851 set_mode_register(p->chip, 0xc0); /* c0 = STOP */
852 set_mode_register(p->chip, 0x70); /* 70 = RUN */
853
854 s_type = 0x00;
855 if (channels == SNDRV_SB_CSP_MONO)
856 s_type = 0x11; /* 000n 000n (n = 1 if mono) */
857 if (sample_width == SNDRV_SB_CSP_SAMPLE_8BIT)
858 s_type |= 0x22; /* 00dX 00dX (d = 1 if 8 bit samples) */
859
860 if (set_codec_parameter(p->chip, 0x81, s_type)) {
861 snd_printd("%s: Set sample type command failed\n", __FUNCTION__);
862 goto __fail;
863 }
864 if (set_codec_parameter(p->chip, 0x80, 0x00)) {
865 snd_printd("%s: Codec start command failed\n", __FUNCTION__);
866 goto __fail;
867 }
868 p->run_width = sample_width;
869 p->run_channels = channels;
870
871 p->running |= SNDRV_SB_CSP_ST_RUNNING;
872
873 if (p->mode & SNDRV_SB_CSP_MODE_QSOUND) {
874 set_codec_parameter(p->chip, 0xe0, 0x01);
875 /* enable QSound decoder */
876 set_codec_parameter(p->chip, 0x00, 0xff);
877 set_codec_parameter(p->chip, 0x01, 0xff);
878 p->running |= SNDRV_SB_CSP_ST_QSOUND;
879 /* set QSound startup value */
880 snd_sb_csp_qsound_transfer(p);
881 }
882 result = 0;
883
884 __fail:
885 spin_unlock(&p->chip->reg_lock);
886
887 /* restore PCM volume */
888 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
889 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
890 spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
891
892 return result;
893 }
894
895 /*
896 * stop CSP
897 */
898 static int snd_sb_csp_stop(struct snd_sb_csp * p)
899 {
900 int result;
901 unsigned char mixL, mixR;
902 unsigned long flags;
903
904 if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
905 return 0;
906
907 /* Mute PCM volume */
908 spin_lock_irqsave(&p->chip->mixer_lock, flags);
909 mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
910 mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
911 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
912 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
913
914 spin_lock(&p->chip->reg_lock);
915 if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
916 set_codec_parameter(p->chip, 0xe0, 0x01);
917 /* disable QSound decoder */
918 set_codec_parameter(p->chip, 0x00, 0x00);
919 set_codec_parameter(p->chip, 0x01, 0x00);
920
921 p->running &= ~SNDRV_SB_CSP_ST_QSOUND;
922 }
923 result = set_mode_register(p->chip, 0xc0); /* c0 = STOP */
924 spin_unlock(&p->chip->reg_lock);
925
926 /* restore PCM volume */
927 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
928 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
929 spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
930
931 if (!(result))
932 p->running &= ~(SNDRV_SB_CSP_ST_PAUSED | SNDRV_SB_CSP_ST_RUNNING);
933 return result;
934 }
935
936 /*
937 * pause CSP codec and hold DMA transfer
938 */
939 static int snd_sb_csp_pause(struct snd_sb_csp * p)
940 {
941 int result;
942 unsigned long flags;
943
944 if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
945 return -EBUSY;
946
947 spin_lock_irqsave(&p->chip->reg_lock, flags);
948 result = set_codec_parameter(p->chip, 0x80, 0xff);
949 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
950 if (!(result))
951 p->running |= SNDRV_SB_CSP_ST_PAUSED;
952
953 return result;
954 }
955
956 /*
957 * restart CSP codec and resume DMA transfer
958 */
959 static int snd_sb_csp_restart(struct snd_sb_csp * p)
960 {
961 int result;
962 unsigned long flags;
963
964 if (!(p->running & SNDRV_SB_CSP_ST_PAUSED))
965 return -EBUSY;
966
967 spin_lock_irqsave(&p->chip->reg_lock, flags);
968 result = set_codec_parameter(p->chip, 0x80, 0x00);
969 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
970 if (!(result))
971 p->running &= ~SNDRV_SB_CSP_ST_PAUSED;
972
973 return result;
974 }
975
976 /* ------------------------------ */
977
978 /*
979 * QSound mixer control for PCM
980 */
981
982 #define snd_sb_qsound_switch_info snd_ctl_boolean_mono_info
983
984 static int snd_sb_qsound_switch_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
985 {
986 struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
987
988 ucontrol->value.integer.value[0] = p->q_enabled ? 1 : 0;
989 return 0;
990 }
991
992 static int snd_sb_qsound_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
993 {
994 struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
995 unsigned long flags;
996 int change;
997 unsigned char nval;
998
999 nval = ucontrol->value.integer.value[0] & 0x01;
1000 spin_lock_irqsave(&p->q_lock, flags);
1001 change = p->q_enabled != nval;
1002 p->q_enabled = nval;
1003 spin_unlock_irqrestore(&p->q_lock, flags);
1004 return change;
1005 }
1006
1007 static int snd_sb_qsound_space_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1008 {
1009 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1010 uinfo->count = 2;
1011 uinfo->value.integer.min = 0;
1012 uinfo->value.integer.max = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1013 return 0;
1014 }
1015
1016 static int snd_sb_qsound_space_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1017 {
1018 struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
1019 unsigned long flags;
1020
1021 spin_lock_irqsave(&p->q_lock, flags);
1022 ucontrol->value.integer.value[0] = p->qpos_left;
1023 ucontrol->value.integer.value[1] = p->qpos_right;
1024 spin_unlock_irqrestore(&p->q_lock, flags);
1025 return 0;
1026 }
1027
1028 static int snd_sb_qsound_space_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1029 {
1030 struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
1031 unsigned long flags;
1032 int change;
1033 unsigned char nval1, nval2;
1034
1035 nval1 = ucontrol->value.integer.value[0];
1036 if (nval1 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
1037 nval1 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1038 nval2 = ucontrol->value.integer.value[1];
1039 if (nval2 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
1040 nval2 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1041 spin_lock_irqsave(&p->q_lock, flags);
1042 change = p->qpos_left != nval1 || p->qpos_right != nval2;
1043 p->qpos_left = nval1;
1044 p->qpos_right = nval2;
1045 p->qpos_changed = change;
1046 spin_unlock_irqrestore(&p->q_lock, flags);
1047 return change;
1048 }
1049
1050 static struct snd_kcontrol_new snd_sb_qsound_switch = {
1051 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1052 .name = "3D Control - Switch",
1053 .info = snd_sb_qsound_switch_info,
1054 .get = snd_sb_qsound_switch_get,
1055 .put = snd_sb_qsound_switch_put
1056 };
1057
1058 static struct snd_kcontrol_new snd_sb_qsound_space = {
1059 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1060 .name = "3D Control - Space",
1061 .info = snd_sb_qsound_space_info,
1062 .get = snd_sb_qsound_space_get,
1063 .put = snd_sb_qsound_space_put
1064 };
1065
1066 static int snd_sb_qsound_build(struct snd_sb_csp * p)
1067 {
1068 struct snd_card *card;
1069 int err;
1070
1071 snd_assert(p != NULL, return -EINVAL);
1072
1073 card = p->chip->card;
1074 p->qpos_left = p->qpos_right = SNDRV_SB_CSP_QSOUND_MAX_RIGHT / 2;
1075 p->qpos_changed = 0;
1076
1077 spin_lock_init(&p->q_lock);
1078
1079 if ((err = snd_ctl_add(card, p->qsound_switch = snd_ctl_new1(&snd_sb_qsound_switch, p))) < 0)
1080 goto __error;
1081 if ((err = snd_ctl_add(card, p->qsound_space = snd_ctl_new1(&snd_sb_qsound_space, p))) < 0)
1082 goto __error;
1083
1084 return 0;
1085
1086 __error:
1087 snd_sb_qsound_destroy(p);
1088 return err;
1089 }
1090
1091 static void snd_sb_qsound_destroy(struct snd_sb_csp * p)
1092 {
1093 struct snd_card *card;
1094 unsigned long flags;
1095
1096 snd_assert(p != NULL, return);
1097
1098 card = p->chip->card;
1099
1100 down_write(&card->controls_rwsem);
1101 if (p->qsound_switch)
1102 snd_ctl_remove(card, p->qsound_switch);
1103 if (p->qsound_space)
1104 snd_ctl_remove(card, p->qsound_space);
1105 up_write(&card->controls_rwsem);
1106
1107 /* cancel pending transfer of QSound parameters */
1108 spin_lock_irqsave (&p->q_lock, flags);
1109 p->qpos_changed = 0;
1110 spin_unlock_irqrestore (&p->q_lock, flags);
1111 }
1112
1113 /*
1114 * Transfer qsound parameters to CSP,
1115 * function should be called from interrupt routine
1116 */
1117 static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p)
1118 {
1119 int err = -ENXIO;
1120
1121 spin_lock(&p->q_lock);
1122 if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1123 set_codec_parameter(p->chip, 0xe0, 0x01);
1124 /* left channel */
1125 set_codec_parameter(p->chip, 0x00, p->qpos_left);
1126 set_codec_parameter(p->chip, 0x02, 0x00);
1127 /* right channel */
1128 set_codec_parameter(p->chip, 0x00, p->qpos_right);
1129 set_codec_parameter(p->chip, 0x03, 0x00);
1130 err = 0;
1131 }
1132 p->qpos_changed = 0;
1133 spin_unlock(&p->q_lock);
1134 return err;
1135 }
1136
1137 /* ------------------------------ */
1138
1139 /*
1140 * proc interface
1141 */
1142 static int init_proc_entry(struct snd_sb_csp * p, int device)
1143 {
1144 char name[16];
1145 struct snd_info_entry *entry;
1146 sprintf(name, "cspD%d", device);
1147 if (! snd_card_proc_new(p->chip->card, name, &entry))
1148 snd_info_set_text_ops(entry, p, info_read);
1149 return 0;
1150 }
1151
1152 static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1153 {
1154 struct snd_sb_csp *p = entry->private_data;
1155
1156 snd_iprintf(buffer, "Creative Signal Processor [v%d.%d]\n", (p->version >> 4), (p->version & 0x0f));
1157 snd_iprintf(buffer, "State: %cx%c%c%c\n", ((p->running & SNDRV_SB_CSP_ST_QSOUND) ? 'Q' : '-'),
1158 ((p->running & SNDRV_SB_CSP_ST_PAUSED) ? 'P' : '-'),
1159 ((p->running & SNDRV_SB_CSP_ST_RUNNING) ? 'R' : '-'),
1160 ((p->running & SNDRV_SB_CSP_ST_LOADED) ? 'L' : '-'));
1161 if (p->running & SNDRV_SB_CSP_ST_LOADED) {
1162 snd_iprintf(buffer, "Codec: %s [func #%d]\n", p->codec_name, p->func_nr);
1163 snd_iprintf(buffer, "Sample rates: ");
1164 if (p->acc_rates == SNDRV_SB_CSP_RATE_ALL) {
1165 snd_iprintf(buffer, "All\n");
1166 } else {
1167 snd_iprintf(buffer, "%s%s%s%s\n",
1168 ((p->acc_rates & SNDRV_SB_CSP_RATE_8000) ? "8000Hz " : ""),
1169 ((p->acc_rates & SNDRV_SB_CSP_RATE_11025) ? "11025Hz " : ""),
1170 ((p->acc_rates & SNDRV_SB_CSP_RATE_22050) ? "22050Hz " : ""),
1171 ((p->acc_rates & SNDRV_SB_CSP_RATE_44100) ? "44100Hz" : ""));
1172 }
1173 if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
1174 snd_iprintf(buffer, "QSound decoder %sabled\n",
1175 p->q_enabled ? "en" : "dis");
1176 } else {
1177 snd_iprintf(buffer, "PCM format ID: 0x%x (%s/%s) [%s/%s] [%s/%s]\n",
1178 p->acc_format,
1179 ((p->acc_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? "16bit" : "-"),
1180 ((p->acc_width & SNDRV_SB_CSP_SAMPLE_8BIT) ? "8bit" : "-"),
1181 ((p->acc_channels & SNDRV_SB_CSP_MONO) ? "mono" : "-"),
1182 ((p->acc_channels & SNDRV_SB_CSP_STEREO) ? "stereo" : "-"),
1183 ((p->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) ? "playback" : "-"),
1184 ((p->mode & SNDRV_SB_CSP_MODE_DSP_READ) ? "capture" : "-"));
1185 }
1186 }
1187 if (p->running & SNDRV_SB_CSP_ST_AUTO) {
1188 snd_iprintf(buffer, "Autoloaded Mu-Law, A-Law or Ima-ADPCM hardware codec\n");
1189 }
1190 if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
1191 snd_iprintf(buffer, "Processing %dbit %s PCM samples\n",
1192 ((p->run_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? 16 : 8),
1193 ((p->run_channels & SNDRV_SB_CSP_MONO) ? "mono" : "stereo"));
1194 }
1195 if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1196 snd_iprintf(buffer, "Qsound position: left = 0x%x, right = 0x%x\n",
1197 p->qpos_left, p->qpos_right);
1198 }
1199 }
1200
1201 /* */
1202
1203 EXPORT_SYMBOL(snd_sb_csp_new);
1204
1205 /*
1206 * INIT part
1207 */
1208
1209 static int __init alsa_sb_csp_init(void)
1210 {
1211 return 0;
1212 }
1213
1214 static void __exit alsa_sb_csp_exit(void)
1215 {
1216 }
1217
1218 module_init(alsa_sb_csp_init)
1219 module_exit(alsa_sb_csp_exit)
WRT350N Kernel Patches