Merge branch 'topic/usb-caiaq' into for-linus
[linux-2.6.git] / sound / isa / sb / sb16_csp.c
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         if (snd_BUG_ON(!p))
202                 return -EINVAL;
203
204         if (snd_sb_csp_check_version(p))
205                 return -ENODEV;
206
207         switch (cmd) {
208                 /* get information */
209         case SNDRV_SB_CSP_IOCTL_INFO:
210                 *info.codec_name = *p->codec_name;
211                 info.func_nr = p->func_nr;
212                 info.acc_format = p->acc_format;
213                 info.acc_channels = p->acc_channels;
214                 info.acc_width = p->acc_width;
215                 info.acc_rates = p->acc_rates;
216                 info.csp_mode = p->mode;
217                 info.run_channels = p->run_channels;
218                 info.run_width = p->run_width;
219                 info.version = p->version;
220                 info.state = p->running;
221                 if (copy_to_user((void __user *)arg, &info, sizeof(info)))
222                         err = -EFAULT;
223                 else
224                         err = 0;
225                 break;
226
227                 /* load CSP microcode */
228         case SNDRV_SB_CSP_IOCTL_LOAD_CODE:
229                 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
230                        -EBUSY : snd_sb_csp_riff_load(p, (struct snd_sb_csp_microcode __user *) arg));
231                 break;
232         case SNDRV_SB_CSP_IOCTL_UNLOAD_CODE:
233                 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
234                        -EBUSY : snd_sb_csp_unload(p));
235                 break;
236
237                 /* change CSP running state */
238         case SNDRV_SB_CSP_IOCTL_START:
239                 if (copy_from_user(&start_info, (void __user *) arg, sizeof(start_info)))
240                         err = -EFAULT;
241                 else
242                         err = snd_sb_csp_start(p, start_info.sample_width, start_info.channels);
243                 break;
244         case SNDRV_SB_CSP_IOCTL_STOP:
245                 err = snd_sb_csp_stop(p);
246                 break;
247         case SNDRV_SB_CSP_IOCTL_PAUSE:
248                 err = snd_sb_csp_pause(p);
249                 break;
250         case SNDRV_SB_CSP_IOCTL_RESTART:
251                 err = snd_sb_csp_restart(p);
252                 break;
253         default:
254                 err = -ENOTTY;
255                 break;
256         }
257
258         return err;
259 }
260
261 /*
262  * close the device
263  */
264 static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file)
265 {
266         struct snd_sb_csp *p = hw->private_data;
267         return (snd_sb_csp_unuse(p));
268 }
269
270 /* ------------------------------ */
271
272 /*
273  * acquire device
274  */
275 static int snd_sb_csp_use(struct snd_sb_csp * p)
276 {
277         mutex_lock(&p->access_mutex);
278         if (p->used) {
279                 mutex_unlock(&p->access_mutex);
280                 return -EAGAIN;
281         }
282         p->used++;
283         mutex_unlock(&p->access_mutex);
284
285         return 0;
286
287 }
288
289 /*
290  * release device
291  */
292 static int snd_sb_csp_unuse(struct snd_sb_csp * p)
293 {
294         mutex_lock(&p->access_mutex);
295         p->used--;
296         mutex_unlock(&p->access_mutex);
297
298         return 0;
299 }
300
301 /*
302  * load microcode via ioctl: 
303  * code is user-space pointer
304  */
305 static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
306                                 struct snd_sb_csp_microcode __user * mcode)
307 {
308         struct snd_sb_csp_mc_header info;
309
310         unsigned char __user *data_ptr;
311         unsigned char __user *data_end;
312         unsigned short func_nr = 0;
313
314         struct riff_header file_h, item_h, code_h;
315         __u32 item_type;
316         struct desc_header funcdesc_h;
317
318         unsigned long flags;
319         int err;
320
321         if (copy_from_user(&info, mcode, sizeof(info)))
322                 return -EFAULT;
323         data_ptr = mcode->data;
324
325         if (copy_from_user(&file_h, data_ptr, sizeof(file_h)))
326                 return -EFAULT;
327         if ((file_h.name != RIFF_HEADER) ||
328             (le32_to_cpu(file_h.len) >= SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE - sizeof(file_h))) {
329                 snd_printd("%s: Invalid RIFF header\n", __func__);
330                 return -EINVAL;
331         }
332         data_ptr += sizeof(file_h);
333         data_end = data_ptr + le32_to_cpu(file_h.len);
334
335         if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
336                 return -EFAULT;
337         if (item_type != CSP__HEADER) {
338                 snd_printd("%s: Invalid RIFF file type\n", __func__);
339                 return -EINVAL;
340         }
341         data_ptr += sizeof (item_type);
342
343         for (; data_ptr < data_end; data_ptr += le32_to_cpu(item_h.len)) {
344                 if (copy_from_user(&item_h, data_ptr, sizeof(item_h)))
345                         return -EFAULT;
346                 data_ptr += sizeof(item_h);
347                 if (item_h.name != LIST_HEADER)
348                         continue;
349
350                 if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
351                          return -EFAULT;
352                 switch (item_type) {
353                 case FUNC_HEADER:
354                         if (copy_from_user(&funcdesc_h, data_ptr + sizeof(item_type), sizeof(funcdesc_h)))
355                                 return -EFAULT;
356                         func_nr = le16_to_cpu(funcdesc_h.func_nr);
357                         break;
358                 case CODE_HEADER:
359                         if (func_nr != info.func_req)
360                                 break;  /* not required function, try next */
361                         data_ptr += sizeof(item_type);
362
363                         /* destroy QSound mixer element */
364                         if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
365                                 snd_sb_qsound_destroy(p);
366                         }
367                         /* Clear all flags */
368                         p->running = 0;
369                         p->mode = 0;
370
371                         /* load microcode blocks */
372                         for (;;) {
373                                 if (data_ptr >= data_end)
374                                         return -EINVAL;
375                                 if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
376                                         return -EFAULT;
377
378                                 /* init microcode blocks */
379                                 if (code_h.name != INIT_HEADER)
380                                         break;
381                                 data_ptr += sizeof(code_h);
382                                 err = snd_sb_csp_load_user(p, data_ptr, le32_to_cpu(code_h.len),
383                                                       SNDRV_SB_CSP_LOAD_INITBLOCK);
384                                 if (err)
385                                         return err;
386                                 data_ptr += le32_to_cpu(code_h.len);
387                         }
388                         /* main microcode block */
389                         if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
390                                 return -EFAULT;
391
392                         if (code_h.name != MAIN_HEADER) {
393                                 snd_printd("%s: Missing 'main' microcode\n", __func__);
394                                 return -EINVAL;
395                         }
396                         data_ptr += sizeof(code_h);
397                         err = snd_sb_csp_load_user(p, data_ptr,
398                                                    le32_to_cpu(code_h.len), 0);
399                         if (err)
400                                 return err;
401
402                         /* fill in codec header */
403                         strlcpy(p->codec_name, info.codec_name, sizeof(p->codec_name));
404                         p->func_nr = func_nr;
405                         p->mode = le16_to_cpu(funcdesc_h.flags_play_rec);
406                         switch (le16_to_cpu(funcdesc_h.VOC_type)) {
407                         case 0x0001:    /* QSound decoder */
408                                 if (le16_to_cpu(funcdesc_h.flags_play_rec) == SNDRV_SB_CSP_MODE_DSP_WRITE) {
409                                         if (snd_sb_qsound_build(p) == 0)
410                                                 /* set QSound flag and clear all other mode flags */
411                                                 p->mode = SNDRV_SB_CSP_MODE_QSOUND;
412                                 }
413                                 p->acc_format = 0;
414                                 break;
415                         case 0x0006:    /* A Law codec */
416                                 p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
417                                 break;
418                         case 0x0007:    /* Mu Law codec */
419                                 p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
420                                 break;
421                         case 0x0011:    /* what Creative thinks is IMA ADPCM codec */
422                         case 0x0200:    /* Creative ADPCM codec */
423                                 p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
424                                 break;
425                         case    201:    /* Text 2 Speech decoder */
426                                 /* TODO: Text2Speech handling routines */
427                                 p->acc_format = 0;
428                                 break;
429                         case 0x0202:    /* Fast Speech 8 codec */
430                         case 0x0203:    /* Fast Speech 10 codec */
431                                 p->acc_format = SNDRV_PCM_FMTBIT_SPECIAL;
432                                 break;
433                         default:        /* other codecs are unsupported */
434                                 p->acc_format = p->acc_width = p->acc_rates = 0;
435                                 p->mode = 0;
436                                 snd_printd("%s: Unsupported CSP codec type: 0x%04x\n",
437                                            __func__,
438                                            le16_to_cpu(funcdesc_h.VOC_type));
439                                 return -EINVAL;
440                         }
441                         p->acc_channels = le16_to_cpu(funcdesc_h.flags_stereo_mono);
442                         p->acc_width = le16_to_cpu(funcdesc_h.flags_16bit_8bit);
443                         p->acc_rates = le16_to_cpu(funcdesc_h.flags_rates);
444
445                         /* Decouple CSP from IRQ and DMAREQ lines */
446                         spin_lock_irqsave(&p->chip->reg_lock, flags);
447                         set_mode_register(p->chip, 0xfc);
448                         set_mode_register(p->chip, 0x00);
449                         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
450
451                         /* finished loading successfully */
452                         p->running = SNDRV_SB_CSP_ST_LOADED;    /* set LOADED flag */
453                         return 0;
454                 }
455         }
456         snd_printd("%s: Function #%d not found\n", __func__, info.func_req);
457         return -EINVAL;
458 }
459
460 /*
461  * unload CSP microcode
462  */
463 static int snd_sb_csp_unload(struct snd_sb_csp * p)
464 {
465         if (p->running & SNDRV_SB_CSP_ST_RUNNING)
466                 return -EBUSY;
467         if (!(p->running & SNDRV_SB_CSP_ST_LOADED))
468                 return -ENXIO;
469
470         /* clear supported formats */
471         p->acc_format = 0;
472         p->acc_channels = p->acc_width = p->acc_rates = 0;
473         /* destroy QSound mixer element */
474         if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
475                 snd_sb_qsound_destroy(p);
476         }
477         /* clear all flags */
478         p->running = 0;
479         p->mode = 0;
480         return 0;
481 }
482
483 /*
484  * send command sequence to DSP
485  */
486 static inline int command_seq(struct snd_sb *chip, const unsigned char *seq, int size)
487 {
488         int i;
489         for (i = 0; i < size; i++) {
490                 if (!snd_sbdsp_command(chip, seq[i]))
491                         return -EIO;
492         }
493         return 0;
494 }
495
496 /*
497  * set CSP codec parameter
498  */
499 static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val)
500 {
501         unsigned char dsp_cmd[3];
502
503         dsp_cmd[0] = 0x05;      /* CSP set codec parameter */
504         dsp_cmd[1] = val;       /* Parameter value */
505         dsp_cmd[2] = par;       /* Parameter */
506         command_seq(chip, dsp_cmd, 3);
507         snd_sbdsp_command(chip, 0x03);  /* DSP read? */
508         if (snd_sbdsp_get_byte(chip) != par)
509                 return -EIO;
510         return 0;
511 }
512
513 /*
514  * set CSP register
515  */
516 static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val)
517 {
518         unsigned char dsp_cmd[3];
519
520         dsp_cmd[0] = 0x0e;      /* CSP set register */
521         dsp_cmd[1] = reg;       /* CSP Register */
522         dsp_cmd[2] = val;       /* value */
523         return command_seq(chip, dsp_cmd, 3);
524 }
525
526 /*
527  * read CSP register
528  * return < 0 -> error
529  */
530 static int read_register(struct snd_sb *chip, unsigned char reg)
531 {
532         unsigned char dsp_cmd[2];
533
534         dsp_cmd[0] = 0x0f;      /* CSP read register */
535         dsp_cmd[1] = reg;       /* CSP Register */
536         command_seq(chip, dsp_cmd, 2);
537         return snd_sbdsp_get_byte(chip);        /* Read DSP value */
538 }
539
540 /*
541  * set CSP mode register
542  */
543 static int set_mode_register(struct snd_sb *chip, unsigned char mode)
544 {
545         unsigned char dsp_cmd[2];
546
547         dsp_cmd[0] = 0x04;      /* CSP set mode register */
548         dsp_cmd[1] = mode;      /* mode */
549         return command_seq(chip, dsp_cmd, 2);
550 }
551
552 /*
553  * Detect CSP
554  * return 0 if CSP exists.
555  */
556 static int csp_detect(struct snd_sb *chip, int *version)
557 {
558         unsigned char csp_test1, csp_test2;
559         unsigned long flags;
560         int result = -ENODEV;
561
562         spin_lock_irqsave(&chip->reg_lock, flags);
563
564         set_codec_parameter(chip, 0x00, 0x00);
565         set_mode_register(chip, 0xfc);          /* 0xfc = ?? */
566
567         csp_test1 = read_register(chip, 0x83);
568         set_register(chip, 0x83, ~csp_test1);
569         csp_test2 = read_register(chip, 0x83);
570         if (csp_test2 != (csp_test1 ^ 0xff))
571                 goto __fail;
572
573         set_register(chip, 0x83, csp_test1);
574         csp_test2 = read_register(chip, 0x83);
575         if (csp_test2 != csp_test1)
576                 goto __fail;
577
578         set_mode_register(chip, 0x00);          /* 0x00 = ? */
579
580         *version = get_version(chip);
581         snd_sbdsp_reset(chip);  /* reset DSP after getversion! */
582         if (*version >= 0x10 && *version <= 0x1f)
583                 result = 0;             /* valid version id */
584
585       __fail:
586         spin_unlock_irqrestore(&chip->reg_lock, flags);
587         return result;
588 }
589
590 /*
591  * get CSP version number
592  */
593 static int get_version(struct snd_sb *chip)
594 {
595         unsigned char dsp_cmd[2];
596
597         dsp_cmd[0] = 0x08;      /* SB_DSP_!something! */
598         dsp_cmd[1] = 0x03;      /* get chip version id? */
599         command_seq(chip, dsp_cmd, 2);
600
601         return (snd_sbdsp_get_byte(chip));
602 }
603
604 /*
605  * check if the CSP version is valid
606  */
607 static int snd_sb_csp_check_version(struct snd_sb_csp * p)
608 {
609         if (p->version < 0x10 || p->version > 0x1f) {
610                 snd_printd("%s: Invalid CSP version: 0x%x\n", __func__, p->version);
611                 return 1;
612         }
613         return 0;
614 }
615
616 /*
617  * download microcode to CSP (microcode should have one "main" block).
618  */
619 static int snd_sb_csp_load(struct snd_sb_csp * p, const unsigned char *buf, int size, int load_flags)
620 {
621         int status, i;
622         int err;
623         int result = -EIO;
624         unsigned long flags;
625
626         spin_lock_irqsave(&p->chip->reg_lock, flags);
627         snd_sbdsp_command(p->chip, 0x01);       /* CSP download command */
628         if (snd_sbdsp_get_byte(p->chip)) {
629                 snd_printd("%s: Download command failed\n", __func__);
630                 goto __fail;
631         }
632         /* Send CSP low byte (size - 1) */
633         snd_sbdsp_command(p->chip, (unsigned char)(size - 1));
634         /* Send high byte */
635         snd_sbdsp_command(p->chip, (unsigned char)((size - 1) >> 8));
636         /* send microcode sequence */
637         /* load from kernel space */
638         while (size--) {
639                 if (!snd_sbdsp_command(p->chip, *buf++))
640                         goto __fail;
641         }
642         if (snd_sbdsp_get_byte(p->chip))
643                 goto __fail;
644
645         if (load_flags & SNDRV_SB_CSP_LOAD_INITBLOCK) {
646                 i = 0;
647                 /* some codecs (FastSpeech) take some time to initialize */
648                 while (1) {
649                         snd_sbdsp_command(p->chip, 0x03);
650                         status = snd_sbdsp_get_byte(p->chip);
651                         if (status == 0x55 || ++i >= 10)
652                                 break;
653                         udelay (10);
654                 }
655                 if (status != 0x55) {
656                         snd_printd("%s: Microcode initialization failed\n", __func__);
657                         goto __fail;
658                 }
659         } else {
660                 /*
661                  * Read mixer register SB_DSP4_DMASETUP after loading 'main' code.
662                  * Start CSP chip if no 16bit DMA channel is set - some kind
663                  * of autorun or perhaps a bugfix?
664                  */
665                 spin_lock(&p->chip->mixer_lock);
666                 status = snd_sbmixer_read(p->chip, SB_DSP4_DMASETUP);
667                 spin_unlock(&p->chip->mixer_lock);
668                 if (!(status & (SB_DMASETUP_DMA7 | SB_DMASETUP_DMA6 | SB_DMASETUP_DMA5))) {
669                         err = (set_codec_parameter(p->chip, 0xaa, 0x00) ||
670                                set_codec_parameter(p->chip, 0xff, 0x00));
671                         snd_sbdsp_reset(p->chip);               /* really! */
672                         if (err)
673                                 goto __fail;
674                         set_mode_register(p->chip, 0xc0);       /* c0 = STOP */
675                         set_mode_register(p->chip, 0x70);       /* 70 = RUN */
676                 }
677         }
678         result = 0;
679
680       __fail:
681         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
682         return result;
683 }
684  
685 static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags)
686 {
687         int err = -ENOMEM;
688         unsigned char *kbuf = kmalloc(size, GFP_KERNEL);
689         if (kbuf) {
690                 if (copy_from_user(kbuf, buf, size))
691                         err = -EFAULT;
692                 else
693                         err = snd_sb_csp_load(p, kbuf, size, load_flags);
694                 kfree(kbuf);
695         }
696         return err;
697 }
698
699 static int snd_sb_csp_firmware_load(struct snd_sb_csp *p, int index, int flags)
700 {
701         static const char *const names[] = {
702                 "sb16/mulaw_main.csp",
703                 "sb16/alaw_main.csp",
704                 "sb16/ima_adpcm_init.csp",
705                 "sb16/ima_adpcm_playback.csp",
706                 "sb16/ima_adpcm_capture.csp",
707         };
708         const struct firmware *program;
709
710         BUILD_BUG_ON(ARRAY_SIZE(names) != CSP_PROGRAM_COUNT);
711         program = p->csp_programs[index];
712         if (!program) {
713                 int err = request_firmware(&program, names[index],
714                                        p->chip->card->dev);
715                 if (err < 0)
716                         return err;
717                 p->csp_programs[index] = program;
718         }
719         return snd_sb_csp_load(p, program->data, program->size, flags);
720 }
721
722 /*
723  * autoload hardware codec if necessary
724  * return 0 if CSP is loaded and ready to run (p->running != 0)
725  */
726 static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode)
727 {
728         unsigned long flags;
729         int err = 0;
730
731         /* if CSP is running or manually loaded then exit */
732         if (p->running & (SNDRV_SB_CSP_ST_RUNNING | SNDRV_SB_CSP_ST_LOADED)) 
733                 return -EBUSY;
734
735         /* autoload microcode only if requested hardware codec is not already loaded */
736         if (((1 << pcm_sfmt) & p->acc_format) && (play_rec_mode & p->mode)) {
737                 p->running = SNDRV_SB_CSP_ST_AUTO;
738         } else {
739                 switch (pcm_sfmt) {
740                 case SNDRV_PCM_FORMAT_MU_LAW:
741                         err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_MULAW, 0);
742                         p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
743                         p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
744                         break;
745                 case SNDRV_PCM_FORMAT_A_LAW:
746                         err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ALAW, 0);
747                         p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
748                         p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
749                         break;
750                 case SNDRV_PCM_FORMAT_IMA_ADPCM:
751                         err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ADPCM_INIT,
752                                                        SNDRV_SB_CSP_LOAD_INITBLOCK);
753                         if (err)
754                                 break;
755                         if (play_rec_mode == SNDRV_SB_CSP_MODE_DSP_WRITE) {
756                                 err = snd_sb_csp_firmware_load
757                                         (p, CSP_PROGRAM_ADPCM_PLAYBACK, 0);
758                                 p->mode = SNDRV_SB_CSP_MODE_DSP_WRITE;
759                         } else {
760                                 err = snd_sb_csp_firmware_load
761                                         (p, CSP_PROGRAM_ADPCM_CAPTURE, 0);
762                                 p->mode = SNDRV_SB_CSP_MODE_DSP_READ;
763                         }
764                         p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
765                         break;                            
766                 default:
767                         /* Decouple CSP from IRQ and DMAREQ lines */
768                         if (p->running & SNDRV_SB_CSP_ST_AUTO) {
769                                 spin_lock_irqsave(&p->chip->reg_lock, flags);
770                                 set_mode_register(p->chip, 0xfc);
771                                 set_mode_register(p->chip, 0x00);
772                                 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
773                                 p->running = 0;                 /* clear autoloaded flag */
774                         }
775                         return -EINVAL;
776                 }
777                 if (err) {
778                         p->acc_format = 0;
779                         p->acc_channels = p->acc_width = p->acc_rates = 0;
780
781                         p->running = 0;                         /* clear autoloaded flag */
782                         p->mode = 0;
783                         return (err);
784                 } else {
785                         p->running = SNDRV_SB_CSP_ST_AUTO;      /* set autoloaded flag */
786                         p->acc_width = SNDRV_SB_CSP_SAMPLE_16BIT;       /* only 16 bit data */
787                         p->acc_channels = SNDRV_SB_CSP_MONO | SNDRV_SB_CSP_STEREO;
788                         p->acc_rates = SNDRV_SB_CSP_RATE_ALL;   /* HW codecs accept all rates */
789                 }   
790
791         }
792         return (p->running & SNDRV_SB_CSP_ST_AUTO) ? 0 : -ENXIO;
793 }
794
795 /*
796  * start CSP
797  */
798 static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels)
799 {
800         unsigned char s_type;   /* sample type */
801         unsigned char mixL, mixR;
802         int result = -EIO;
803         unsigned long flags;
804
805         if (!(p->running & (SNDRV_SB_CSP_ST_LOADED | SNDRV_SB_CSP_ST_AUTO))) {
806                 snd_printd("%s: Microcode not loaded\n", __func__);
807                 return -ENXIO;
808         }
809         if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
810                 snd_printd("%s: CSP already running\n", __func__);
811                 return -EBUSY;
812         }
813         if (!(sample_width & p->acc_width)) {
814                 snd_printd("%s: Unsupported PCM sample width\n", __func__);
815                 return -EINVAL;
816         }
817         if (!(channels & p->acc_channels)) {
818                 snd_printd("%s: Invalid number of channels\n", __func__);
819                 return -EINVAL;
820         }
821
822         /* Mute PCM volume */
823         spin_lock_irqsave(&p->chip->mixer_lock, flags);
824         mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
825         mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
826         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
827         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
828
829         spin_lock(&p->chip->reg_lock);
830         set_mode_register(p->chip, 0xc0);       /* c0 = STOP */
831         set_mode_register(p->chip, 0x70);       /* 70 = RUN */
832
833         s_type = 0x00;
834         if (channels == SNDRV_SB_CSP_MONO)
835                 s_type = 0x11;  /* 000n 000n    (n = 1 if mono) */
836         if (sample_width == SNDRV_SB_CSP_SAMPLE_8BIT)
837                 s_type |= 0x22; /* 00dX 00dX    (d = 1 if 8 bit samples) */
838
839         if (set_codec_parameter(p->chip, 0x81, s_type)) {
840                 snd_printd("%s: Set sample type command failed\n", __func__);
841                 goto __fail;
842         }
843         if (set_codec_parameter(p->chip, 0x80, 0x00)) {
844                 snd_printd("%s: Codec start command failed\n", __func__);
845                 goto __fail;
846         }
847         p->run_width = sample_width;
848         p->run_channels = channels;
849
850         p->running |= SNDRV_SB_CSP_ST_RUNNING;
851
852         if (p->mode & SNDRV_SB_CSP_MODE_QSOUND) {
853                 set_codec_parameter(p->chip, 0xe0, 0x01);
854                 /* enable QSound decoder */
855                 set_codec_parameter(p->chip, 0x00, 0xff);
856                 set_codec_parameter(p->chip, 0x01, 0xff);
857                 p->running |= SNDRV_SB_CSP_ST_QSOUND;
858                 /* set QSound startup value */
859                 snd_sb_csp_qsound_transfer(p);
860         }
861         result = 0;
862
863       __fail:
864         spin_unlock(&p->chip->reg_lock);
865
866         /* restore PCM volume */
867         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
868         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
869         spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
870
871         return result;
872 }
873
874 /*
875  * stop CSP
876  */
877 static int snd_sb_csp_stop(struct snd_sb_csp * p)
878 {
879         int result;
880         unsigned char mixL, mixR;
881         unsigned long flags;
882
883         if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
884                 return 0;
885
886         /* Mute PCM volume */
887         spin_lock_irqsave(&p->chip->mixer_lock, flags);
888         mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
889         mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
890         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
891         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
892
893         spin_lock(&p->chip->reg_lock);
894         if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
895                 set_codec_parameter(p->chip, 0xe0, 0x01);
896                 /* disable QSound decoder */
897                 set_codec_parameter(p->chip, 0x00, 0x00);
898                 set_codec_parameter(p->chip, 0x01, 0x00);
899
900                 p->running &= ~SNDRV_SB_CSP_ST_QSOUND;
901         }
902         result = set_mode_register(p->chip, 0xc0);      /* c0 = STOP */
903         spin_unlock(&p->chip->reg_lock);
904
905         /* restore PCM volume */
906         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
907         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
908         spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
909
910         if (!(result))
911                 p->running &= ~(SNDRV_SB_CSP_ST_PAUSED | SNDRV_SB_CSP_ST_RUNNING);
912         return result;
913 }
914
915 /*
916  * pause CSP codec and hold DMA transfer
917  */
918 static int snd_sb_csp_pause(struct snd_sb_csp * p)
919 {
920         int result;
921         unsigned long flags;
922
923         if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
924                 return -EBUSY;
925
926         spin_lock_irqsave(&p->chip->reg_lock, flags);
927         result = set_codec_parameter(p->chip, 0x80, 0xff);
928         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
929         if (!(result))
930                 p->running |= SNDRV_SB_CSP_ST_PAUSED;
931
932         return result;
933 }
934
935 /*
936  * restart CSP codec and resume DMA transfer
937  */
938 static int snd_sb_csp_restart(struct snd_sb_csp * p)
939 {
940         int result;
941         unsigned long flags;
942
943         if (!(p->running & SNDRV_SB_CSP_ST_PAUSED))
944                 return -EBUSY;
945
946         spin_lock_irqsave(&p->chip->reg_lock, flags);
947         result = set_codec_parameter(p->chip, 0x80, 0x00);
948         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
949         if (!(result))
950                 p->running &= ~SNDRV_SB_CSP_ST_PAUSED;
951
952         return result;
953 }
954
955 /* ------------------------------ */
956
957 /*
958  * QSound mixer control for PCM
959  */
960
961 #define snd_sb_qsound_switch_info       snd_ctl_boolean_mono_info
962
963 static int snd_sb_qsound_switch_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
964 {
965         struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
966         
967         ucontrol->value.integer.value[0] = p->q_enabled ? 1 : 0;
968         return 0;
969 }
970
971 static int snd_sb_qsound_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
972 {
973         struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
974         unsigned long flags;
975         int change;
976         unsigned char nval;
977         
978         nval = ucontrol->value.integer.value[0] & 0x01;
979         spin_lock_irqsave(&p->q_lock, flags);
980         change = p->q_enabled != nval;
981         p->q_enabled = nval;
982         spin_unlock_irqrestore(&p->q_lock, flags);
983         return change;
984 }
985
986 static int snd_sb_qsound_space_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
987 {
988         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
989         uinfo->count = 2;
990         uinfo->value.integer.min = 0;
991         uinfo->value.integer.max = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
992         return 0;
993 }
994
995 static int snd_sb_qsound_space_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
996 {
997         struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
998         unsigned long flags;
999         
1000         spin_lock_irqsave(&p->q_lock, flags);
1001         ucontrol->value.integer.value[0] = p->qpos_left;
1002         ucontrol->value.integer.value[1] = p->qpos_right;
1003         spin_unlock_irqrestore(&p->q_lock, flags);
1004         return 0;
1005 }
1006
1007 static int snd_sb_qsound_space_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1008 {
1009         struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
1010         unsigned long flags;
1011         int change;
1012         unsigned char nval1, nval2;
1013         
1014         nval1 = ucontrol->value.integer.value[0];
1015         if (nval1 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
1016                 nval1 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1017         nval2 = ucontrol->value.integer.value[1];
1018         if (nval2 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
1019                 nval2 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1020         spin_lock_irqsave(&p->q_lock, flags);
1021         change = p->qpos_left != nval1 || p->qpos_right != nval2;
1022         p->qpos_left = nval1;
1023         p->qpos_right = nval2;
1024         p->qpos_changed = change;
1025         spin_unlock_irqrestore(&p->q_lock, flags);
1026         return change;
1027 }
1028
1029 static struct snd_kcontrol_new snd_sb_qsound_switch = {
1030         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1031         .name = "3D Control - Switch",
1032         .info = snd_sb_qsound_switch_info,
1033         .get = snd_sb_qsound_switch_get,
1034         .put = snd_sb_qsound_switch_put
1035 };
1036
1037 static struct snd_kcontrol_new snd_sb_qsound_space = {
1038         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1039         .name = "3D Control - Space",
1040         .info = snd_sb_qsound_space_info,
1041         .get = snd_sb_qsound_space_get,
1042         .put = snd_sb_qsound_space_put
1043 };
1044
1045 static int snd_sb_qsound_build(struct snd_sb_csp * p)
1046 {
1047         struct snd_card *card;
1048         int err;
1049
1050         if (snd_BUG_ON(!p))
1051                 return -EINVAL;
1052
1053         card = p->chip->card;
1054         p->qpos_left = p->qpos_right = SNDRV_SB_CSP_QSOUND_MAX_RIGHT / 2;
1055         p->qpos_changed = 0;
1056
1057         spin_lock_init(&p->q_lock);
1058
1059         if ((err = snd_ctl_add(card, p->qsound_switch = snd_ctl_new1(&snd_sb_qsound_switch, p))) < 0)
1060                 goto __error;
1061         if ((err = snd_ctl_add(card, p->qsound_space = snd_ctl_new1(&snd_sb_qsound_space, p))) < 0)
1062                 goto __error;
1063
1064         return 0;
1065
1066      __error:
1067         snd_sb_qsound_destroy(p);
1068         return err;
1069 }
1070
1071 static void snd_sb_qsound_destroy(struct snd_sb_csp * p)
1072 {
1073         struct snd_card *card;
1074         unsigned long flags;
1075
1076         if (snd_BUG_ON(!p))
1077                 return;
1078
1079         card = p->chip->card;   
1080         
1081         down_write(&card->controls_rwsem);
1082         if (p->qsound_switch)
1083                 snd_ctl_remove(card, p->qsound_switch);
1084         if (p->qsound_space)
1085                 snd_ctl_remove(card, p->qsound_space);
1086         up_write(&card->controls_rwsem);
1087
1088         /* cancel pending transfer of QSound parameters */
1089         spin_lock_irqsave (&p->q_lock, flags);
1090         p->qpos_changed = 0;
1091         spin_unlock_irqrestore (&p->q_lock, flags);
1092 }
1093
1094 /*
1095  * Transfer qsound parameters to CSP,
1096  * function should be called from interrupt routine
1097  */
1098 static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p)
1099 {
1100         int err = -ENXIO;
1101
1102         spin_lock(&p->q_lock);
1103         if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1104                 set_codec_parameter(p->chip, 0xe0, 0x01);
1105                 /* left channel */
1106                 set_codec_parameter(p->chip, 0x00, p->qpos_left);
1107                 set_codec_parameter(p->chip, 0x02, 0x00);
1108                 /* right channel */
1109                 set_codec_parameter(p->chip, 0x00, p->qpos_right);
1110                 set_codec_parameter(p->chip, 0x03, 0x00);
1111                 err = 0;
1112         }
1113         p->qpos_changed = 0;
1114         spin_unlock(&p->q_lock);
1115         return err;
1116 }
1117
1118 /* ------------------------------ */
1119
1120 /*
1121  * proc interface
1122  */
1123 static int init_proc_entry(struct snd_sb_csp * p, int device)
1124 {
1125         char name[16];
1126         struct snd_info_entry *entry;
1127         sprintf(name, "cspD%d", device);
1128         if (! snd_card_proc_new(p->chip->card, name, &entry))
1129                 snd_info_set_text_ops(entry, p, info_read);
1130         return 0;
1131 }
1132
1133 static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1134 {
1135         struct snd_sb_csp *p = entry->private_data;
1136
1137         snd_iprintf(buffer, "Creative Signal Processor [v%d.%d]\n", (p->version >> 4), (p->version & 0x0f));
1138         snd_iprintf(buffer, "State: %cx%c%c%c\n", ((p->running & SNDRV_SB_CSP_ST_QSOUND) ? 'Q' : '-'),
1139                     ((p->running & SNDRV_SB_CSP_ST_PAUSED) ? 'P' : '-'),
1140                     ((p->running & SNDRV_SB_CSP_ST_RUNNING) ? 'R' : '-'),
1141                     ((p->running & SNDRV_SB_CSP_ST_LOADED) ? 'L' : '-'));
1142         if (p->running & SNDRV_SB_CSP_ST_LOADED) {
1143                 snd_iprintf(buffer, "Codec: %s [func #%d]\n", p->codec_name, p->func_nr);
1144                 snd_iprintf(buffer, "Sample rates: ");
1145                 if (p->acc_rates == SNDRV_SB_CSP_RATE_ALL) {
1146                         snd_iprintf(buffer, "All\n");
1147                 } else {
1148                         snd_iprintf(buffer, "%s%s%s%s\n",
1149                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_8000) ? "8000Hz " : ""),
1150                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_11025) ? "11025Hz " : ""),
1151                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_22050) ? "22050Hz " : ""),
1152                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_44100) ? "44100Hz" : ""));
1153                 }
1154                 if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
1155                         snd_iprintf(buffer, "QSound decoder %sabled\n",
1156                                     p->q_enabled ? "en" : "dis");
1157                 } else {
1158                         snd_iprintf(buffer, "PCM format ID: 0x%x (%s/%s) [%s/%s] [%s/%s]\n",
1159                                     p->acc_format,
1160                                     ((p->acc_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? "16bit" : "-"),
1161                                     ((p->acc_width & SNDRV_SB_CSP_SAMPLE_8BIT) ? "8bit" : "-"),
1162                                     ((p->acc_channels & SNDRV_SB_CSP_MONO) ? "mono" : "-"),
1163                                     ((p->acc_channels & SNDRV_SB_CSP_STEREO) ? "stereo" : "-"),
1164                                     ((p->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) ? "playback" : "-"),
1165                                     ((p->mode & SNDRV_SB_CSP_MODE_DSP_READ) ? "capture" : "-"));
1166                 }
1167         }
1168         if (p->running & SNDRV_SB_CSP_ST_AUTO) {
1169                 snd_iprintf(buffer, "Autoloaded Mu-Law, A-Law or Ima-ADPCM hardware codec\n");
1170         }
1171         if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
1172                 snd_iprintf(buffer, "Processing %dbit %s PCM samples\n",
1173                             ((p->run_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? 16 : 8),
1174                             ((p->run_channels & SNDRV_SB_CSP_MONO) ? "mono" : "stereo"));
1175         }
1176         if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1177                 snd_iprintf(buffer, "Qsound position: left = 0x%x, right = 0x%x\n",
1178                             p->qpos_left, p->qpos_right);
1179         }
1180 }
1181
1182 /* */
1183
1184 EXPORT_SYMBOL(snd_sb_csp_new);
1185
1186 /*
1187  * INIT part
1188  */
1189
1190 static int __init alsa_sb_csp_init(void)
1191 {
1192         return 0;
1193 }
1194
1195 static void __exit alsa_sb_csp_exit(void)
1196 {
1197 }
1198
1199 module_init(alsa_sb_csp_init)
1200 module_exit(alsa_sb_csp_exit)