[ALSA] sb16 - Suppress compile warning
[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 <sound/driver.h>
27 #include <linux/delay.h>
28 #include <linux/init.h>
29 #include <linux/slab.h>
30 #include <sound/core.h>
31 #include <sound/control.h>
32 #include <sound/info.h>
33 #include <sound/sb16_csp.h>
34 #include <sound/initval.h>
35
36 MODULE_AUTHOR("Uros Bizjak <uros@kss-loka.si>");
37 MODULE_DESCRIPTION("ALSA driver for SB16 Creative Signal Processor");
38 MODULE_LICENSE("GPL");
39 #ifndef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
40 MODULE_FIRMWARE("sb16/mulaw_main.csp");
41 MODULE_FIRMWARE("sb16/alaw_main.csp");
42 MODULE_FIRMWARE("sb16/ima_adpcm_init.csp");
43 MODULE_FIRMWARE("sb16/ima_adpcm_playback.csp");
44 MODULE_FIRMWARE("sb16/ima_adpcm_capture.csp");
45 #endif
46
47 #ifdef SNDRV_LITTLE_ENDIAN
48 #define CSP_HDR_VALUE(a,b,c,d)  ((a) | ((b)<<8) | ((c)<<16) | ((d)<<24))
49 #else
50 #define CSP_HDR_VALUE(a,b,c,d)  ((d) | ((c)<<8) | ((b)<<16) | ((a)<<24))
51 #endif
52
53 #define RIFF_HEADER     CSP_HDR_VALUE('R', 'I', 'F', 'F')
54 #define CSP__HEADER     CSP_HDR_VALUE('C', 'S', 'P', ' ')
55 #define LIST_HEADER     CSP_HDR_VALUE('L', 'I', 'S', 'T')
56 #define FUNC_HEADER     CSP_HDR_VALUE('f', 'u', 'n', 'c')
57 #define CODE_HEADER     CSP_HDR_VALUE('c', 'o', 'd', 'e')
58 #define INIT_HEADER     CSP_HDR_VALUE('i', 'n', 'i', 't')
59 #define MAIN_HEADER     CSP_HDR_VALUE('m', 'a', 'i', 'n')
60
61 /*
62  * RIFF data format
63  */
64 struct riff_header {
65         __u32 name;
66         __u32 len;
67 };
68
69 struct desc_header {
70         struct riff_header info;
71         __u16 func_nr;
72         __u16 VOC_type;
73         __u16 flags_play_rec;
74         __u16 flags_16bit_8bit;
75         __u16 flags_stereo_mono;
76         __u16 flags_rates;
77 };
78
79 /*
80  * prototypes
81  */
82 static void snd_sb_csp_free(struct snd_hwdep *hw);
83 static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file);
84 static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg);
85 static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file);
86
87 static int csp_detect(struct snd_sb *chip, int *version);
88 static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val);
89 static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val);
90 static int read_register(struct snd_sb *chip, unsigned char reg);
91 static int set_mode_register(struct snd_sb *chip, unsigned char mode);
92 static int get_version(struct snd_sb *chip);
93
94 static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
95                                 struct snd_sb_csp_microcode __user * code);
96 static int snd_sb_csp_unload(struct snd_sb_csp * p);
97 static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags);
98 static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode);
99 static int snd_sb_csp_check_version(struct snd_sb_csp * p);
100
101 static int snd_sb_csp_use(struct snd_sb_csp * p);
102 static int snd_sb_csp_unuse(struct snd_sb_csp * p);
103 static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels);
104 static int snd_sb_csp_stop(struct snd_sb_csp * p);
105 static int snd_sb_csp_pause(struct snd_sb_csp * p);
106 static int snd_sb_csp_restart(struct snd_sb_csp * p);
107
108 static int snd_sb_qsound_build(struct snd_sb_csp * p);
109 static void snd_sb_qsound_destroy(struct snd_sb_csp * p);
110 static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p);
111
112 static int init_proc_entry(struct snd_sb_csp * p, int device);
113 static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer);
114
115 /*
116  * Detect CSP chip and create a new instance
117  */
118 int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep)
119 {
120         struct snd_sb_csp *p;
121         int uninitialized_var(version);
122         int err;
123         struct snd_hwdep *hw;
124
125         if (rhwdep)
126                 *rhwdep = NULL;
127
128         if (csp_detect(chip, &version))
129                 return -ENODEV;
130
131         if ((err = snd_hwdep_new(chip->card, "SB16-CSP", device, &hw)) < 0)
132                 return err;
133
134         if ((p = kzalloc(sizeof(*p), GFP_KERNEL)) == NULL) {
135                 snd_device_free(chip->card, hw);
136                 return -ENOMEM;
137         }
138         p->chip = chip;
139         p->version = version;
140
141         /* CSP operators */
142         p->ops.csp_use = snd_sb_csp_use;
143         p->ops.csp_unuse = snd_sb_csp_unuse;
144         p->ops.csp_autoload = snd_sb_csp_autoload;
145         p->ops.csp_start = snd_sb_csp_start;
146         p->ops.csp_stop = snd_sb_csp_stop;
147         p->ops.csp_qsound_transfer = snd_sb_csp_qsound_transfer;
148
149         mutex_init(&p->access_mutex);
150         sprintf(hw->name, "CSP v%d.%d", (version >> 4), (version & 0x0f));
151         hw->iface = SNDRV_HWDEP_IFACE_SB16CSP;
152         hw->private_data = p;
153         hw->private_free = snd_sb_csp_free;
154
155         /* operators - only write/ioctl */
156         hw->ops.open = snd_sb_csp_open;
157         hw->ops.ioctl = snd_sb_csp_ioctl;
158         hw->ops.release = snd_sb_csp_release;
159
160         /* create a proc entry */
161         init_proc_entry(p, device);
162         if (rhwdep)
163                 *rhwdep = hw;
164         return 0;
165 }
166
167 /*
168  * free_private for hwdep instance
169  */
170 static void snd_sb_csp_free(struct snd_hwdep *hwdep)
171 {
172 #ifndef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
173         int i;
174 #endif
175         struct snd_sb_csp *p = hwdep->private_data;
176         if (p) {
177                 if (p->running & SNDRV_SB_CSP_ST_RUNNING)
178                         snd_sb_csp_stop(p);
179 #ifndef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
180                 for (i = 0; i < ARRAY_SIZE(p->csp_programs); ++i)
181                         release_firmware(p->csp_programs[i]);
182 #endif
183                 kfree(p);
184         }
185 }
186
187 /* ------------------------------ */
188
189 /*
190  * open the device exclusively
191  */
192 static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file)
193 {
194         struct snd_sb_csp *p = hw->private_data;
195         return (snd_sb_csp_use(p));
196 }
197
198 /*
199  * ioctl for hwdep device:
200  */
201 static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg)
202 {
203         struct snd_sb_csp *p = hw->private_data;
204         struct snd_sb_csp_info info;
205         struct snd_sb_csp_start start_info;
206         int err;
207
208         snd_assert(p != NULL, return -EINVAL);
209
210         if (snd_sb_csp_check_version(p))
211                 return -ENODEV;
212
213         switch (cmd) {
214                 /* get information */
215         case SNDRV_SB_CSP_IOCTL_INFO:
216                 *info.codec_name = *p->codec_name;
217                 info.func_nr = p->func_nr;
218                 info.acc_format = p->acc_format;
219                 info.acc_channels = p->acc_channels;
220                 info.acc_width = p->acc_width;
221                 info.acc_rates = p->acc_rates;
222                 info.csp_mode = p->mode;
223                 info.run_channels = p->run_channels;
224                 info.run_width = p->run_width;
225                 info.version = p->version;
226                 info.state = p->running;
227                 if (copy_to_user((void __user *)arg, &info, sizeof(info)))
228                         err = -EFAULT;
229                 else
230                         err = 0;
231                 break;
232
233                 /* load CSP microcode */
234         case SNDRV_SB_CSP_IOCTL_LOAD_CODE:
235                 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
236                        -EBUSY : snd_sb_csp_riff_load(p, (struct snd_sb_csp_microcode __user *) arg));
237                 break;
238         case SNDRV_SB_CSP_IOCTL_UNLOAD_CODE:
239                 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
240                        -EBUSY : snd_sb_csp_unload(p));
241                 break;
242
243                 /* change CSP running state */
244         case SNDRV_SB_CSP_IOCTL_START:
245                 if (copy_from_user(&start_info, (void __user *) arg, sizeof(start_info)))
246                         err = -EFAULT;
247                 else
248                         err = snd_sb_csp_start(p, start_info.sample_width, start_info.channels);
249                 break;
250         case SNDRV_SB_CSP_IOCTL_STOP:
251                 err = snd_sb_csp_stop(p);
252                 break;
253         case SNDRV_SB_CSP_IOCTL_PAUSE:
254                 err = snd_sb_csp_pause(p);
255                 break;
256         case SNDRV_SB_CSP_IOCTL_RESTART:
257                 err = snd_sb_csp_restart(p);
258                 break;
259         default:
260                 err = -ENOTTY;
261                 break;
262         }
263
264         return err;
265 }
266
267 /*
268  * close the device
269  */
270 static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file)
271 {
272         struct snd_sb_csp *p = hw->private_data;
273         return (snd_sb_csp_unuse(p));
274 }
275
276 /* ------------------------------ */
277
278 /*
279  * acquire device
280  */
281 static int snd_sb_csp_use(struct snd_sb_csp * p)
282 {
283         mutex_lock(&p->access_mutex);
284         if (p->used) {
285                 mutex_unlock(&p->access_mutex);
286                 return -EAGAIN;
287         }
288         p->used++;
289         mutex_unlock(&p->access_mutex);
290
291         return 0;
292
293 }
294
295 /*
296  * release device
297  */
298 static int snd_sb_csp_unuse(struct snd_sb_csp * p)
299 {
300         mutex_lock(&p->access_mutex);
301         p->used--;
302         mutex_unlock(&p->access_mutex);
303
304         return 0;
305 }
306
307 /*
308  * load microcode via ioctl: 
309  * code is user-space pointer
310  */
311 static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
312                                 struct snd_sb_csp_microcode __user * mcode)
313 {
314         struct snd_sb_csp_mc_header info;
315
316         unsigned char __user *data_ptr;
317         unsigned char __user *data_end;
318         unsigned short func_nr = 0;
319
320         struct riff_header file_h, item_h, code_h;
321         __u32 item_type;
322         struct desc_header funcdesc_h;
323
324         unsigned long flags;
325         int err;
326
327         if (copy_from_user(&info, mcode, sizeof(info)))
328                 return -EFAULT;
329         data_ptr = mcode->data;
330
331         if (copy_from_user(&file_h, data_ptr, sizeof(file_h)))
332                 return -EFAULT;
333         if ((file_h.name != RIFF_HEADER) ||
334             (le32_to_cpu(file_h.len) >= SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE - sizeof(file_h))) {
335                 snd_printd("%s: Invalid RIFF header\n", __FUNCTION__);
336                 return -EINVAL;
337         }
338         data_ptr += sizeof(file_h);
339         data_end = data_ptr + le32_to_cpu(file_h.len);
340
341         if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
342                 return -EFAULT;
343         if (item_type != CSP__HEADER) {
344                 snd_printd("%s: Invalid RIFF file type\n", __FUNCTION__);
345                 return -EINVAL;
346         }
347         data_ptr += sizeof (item_type);
348
349         for (; data_ptr < data_end; data_ptr += le32_to_cpu(item_h.len)) {
350                 if (copy_from_user(&item_h, data_ptr, sizeof(item_h)))
351                         return -EFAULT;
352                 data_ptr += sizeof(item_h);
353                 if (item_h.name != LIST_HEADER)
354                         continue;
355
356                 if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
357                          return -EFAULT;
358                 switch (item_type) {
359                 case FUNC_HEADER:
360                         if (copy_from_user(&funcdesc_h, data_ptr + sizeof(item_type), sizeof(funcdesc_h)))
361                                 return -EFAULT;
362                         func_nr = le16_to_cpu(funcdesc_h.func_nr);
363                         break;
364                 case CODE_HEADER:
365                         if (func_nr != info.func_req)
366                                 break;  /* not required function, try next */
367                         data_ptr += sizeof(item_type);
368
369                         /* destroy QSound mixer element */
370                         if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
371                                 snd_sb_qsound_destroy(p);
372                         }
373                         /* Clear all flags */
374                         p->running = 0;
375                         p->mode = 0;
376
377                         /* load microcode blocks */
378                         for (;;) {
379                                 if (data_ptr >= data_end)
380                                         return -EINVAL;
381                                 if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
382                                         return -EFAULT;
383
384                                 /* init microcode blocks */
385                                 if (code_h.name != INIT_HEADER)
386                                         break;
387                                 data_ptr += sizeof(code_h);
388                                 err = snd_sb_csp_load_user(p, data_ptr, le32_to_cpu(code_h.len),
389                                                       SNDRV_SB_CSP_LOAD_INITBLOCK);
390                                 if (err)
391                                         return err;
392                                 data_ptr += le32_to_cpu(code_h.len);
393                         }
394                         /* main microcode block */
395                         if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
396                                 return -EFAULT;
397
398                         if (code_h.name != MAIN_HEADER) {
399                                 snd_printd("%s: Missing 'main' microcode\n", __FUNCTION__);
400                                 return -EINVAL;
401                         }
402                         data_ptr += sizeof(code_h);
403                         err = snd_sb_csp_load_user(p, data_ptr,
404                                                    le32_to_cpu(code_h.len), 0);
405                         if (err)
406                                 return err;
407
408                         /* fill in codec header */
409                         strlcpy(p->codec_name, info.codec_name, sizeof(p->codec_name));
410                         p->func_nr = func_nr;
411                         p->mode = le16_to_cpu(funcdesc_h.flags_play_rec);
412                         switch (le16_to_cpu(funcdesc_h.VOC_type)) {
413                         case 0x0001:    /* QSound decoder */
414                                 if (le16_to_cpu(funcdesc_h.flags_play_rec) == SNDRV_SB_CSP_MODE_DSP_WRITE) {
415                                         if (snd_sb_qsound_build(p) == 0)
416                                                 /* set QSound flag and clear all other mode flags */
417                                                 p->mode = SNDRV_SB_CSP_MODE_QSOUND;
418                                 }
419                                 p->acc_format = 0;
420                                 break;
421                         case 0x0006:    /* A Law codec */
422                                 p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
423                                 break;
424                         case 0x0007:    /* Mu Law codec */
425                                 p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
426                                 break;
427                         case 0x0011:    /* what Creative thinks is IMA ADPCM codec */
428                         case 0x0200:    /* Creative ADPCM codec */
429                                 p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
430                                 break;
431                         case    201:    /* Text 2 Speech decoder */
432                                 /* TODO: Text2Speech handling routines */
433                                 p->acc_format = 0;
434                                 break;
435                         case 0x0202:    /* Fast Speech 8 codec */
436                         case 0x0203:    /* Fast Speech 10 codec */
437                                 p->acc_format = SNDRV_PCM_FMTBIT_SPECIAL;
438                                 break;
439                         default:        /* other codecs are unsupported */
440                                 p->acc_format = p->acc_width = p->acc_rates = 0;
441                                 p->mode = 0;
442                                 snd_printd("%s: Unsupported CSP codec type: 0x%04x\n",
443                                            __FUNCTION__,
444                                            le16_to_cpu(funcdesc_h.VOC_type));
445                                 return -EINVAL;
446                         }
447                         p->acc_channels = le16_to_cpu(funcdesc_h.flags_stereo_mono);
448                         p->acc_width = le16_to_cpu(funcdesc_h.flags_16bit_8bit);
449                         p->acc_rates = le16_to_cpu(funcdesc_h.flags_rates);
450
451                         /* Decouple CSP from IRQ and DMAREQ lines */
452                         spin_lock_irqsave(&p->chip->reg_lock, flags);
453                         set_mode_register(p->chip, 0xfc);
454                         set_mode_register(p->chip, 0x00);
455                         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
456
457                         /* finished loading successfully */
458                         p->running = SNDRV_SB_CSP_ST_LOADED;    /* set LOADED flag */
459                         return 0;
460                 }
461         }
462         snd_printd("%s: Function #%d not found\n", __FUNCTION__, info.func_req);
463         return -EINVAL;
464 }
465
466 /*
467  * unload CSP microcode
468  */
469 static int snd_sb_csp_unload(struct snd_sb_csp * p)
470 {
471         if (p->running & SNDRV_SB_CSP_ST_RUNNING)
472                 return -EBUSY;
473         if (!(p->running & SNDRV_SB_CSP_ST_LOADED))
474                 return -ENXIO;
475
476         /* clear supported formats */
477         p->acc_format = 0;
478         p->acc_channels = p->acc_width = p->acc_rates = 0;
479         /* destroy QSound mixer element */
480         if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
481                 snd_sb_qsound_destroy(p);
482         }
483         /* clear all flags */
484         p->running = 0;
485         p->mode = 0;
486         return 0;
487 }
488
489 /*
490  * send command sequence to DSP
491  */
492 static inline int command_seq(struct snd_sb *chip, const unsigned char *seq, int size)
493 {
494         int i;
495         for (i = 0; i < size; i++) {
496                 if (!snd_sbdsp_command(chip, seq[i]))
497                         return -EIO;
498         }
499         return 0;
500 }
501
502 /*
503  * set CSP codec parameter
504  */
505 static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val)
506 {
507         unsigned char dsp_cmd[3];
508
509         dsp_cmd[0] = 0x05;      /* CSP set codec parameter */
510         dsp_cmd[1] = val;       /* Parameter value */
511         dsp_cmd[2] = par;       /* Parameter */
512         command_seq(chip, dsp_cmd, 3);
513         snd_sbdsp_command(chip, 0x03);  /* DSP read? */
514         if (snd_sbdsp_get_byte(chip) != par)
515                 return -EIO;
516         return 0;
517 }
518
519 /*
520  * set CSP register
521  */
522 static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val)
523 {
524         unsigned char dsp_cmd[3];
525
526         dsp_cmd[0] = 0x0e;      /* CSP set register */
527         dsp_cmd[1] = reg;       /* CSP Register */
528         dsp_cmd[2] = val;       /* value */
529         return command_seq(chip, dsp_cmd, 3);
530 }
531
532 /*
533  * read CSP register
534  * return < 0 -> error
535  */
536 static int read_register(struct snd_sb *chip, unsigned char reg)
537 {
538         unsigned char dsp_cmd[2];
539
540         dsp_cmd[0] = 0x0f;      /* CSP read register */
541         dsp_cmd[1] = reg;       /* CSP Register */
542         command_seq(chip, dsp_cmd, 2);
543         return snd_sbdsp_get_byte(chip);        /* Read DSP value */
544 }
545
546 /*
547  * set CSP mode register
548  */
549 static int set_mode_register(struct snd_sb *chip, unsigned char mode)
550 {
551         unsigned char dsp_cmd[2];
552
553         dsp_cmd[0] = 0x04;      /* CSP set mode register */
554         dsp_cmd[1] = mode;      /* mode */
555         return command_seq(chip, dsp_cmd, 2);
556 }
557
558 /*
559  * Detect CSP
560  * return 0 if CSP exists.
561  */
562 static int csp_detect(struct snd_sb *chip, int *version)
563 {
564         unsigned char csp_test1, csp_test2;
565         unsigned long flags;
566         int result = -ENODEV;
567
568         spin_lock_irqsave(&chip->reg_lock, flags);
569
570         set_codec_parameter(chip, 0x00, 0x00);
571         set_mode_register(chip, 0xfc);          /* 0xfc = ?? */
572
573         csp_test1 = read_register(chip, 0x83);
574         set_register(chip, 0x83, ~csp_test1);
575         csp_test2 = read_register(chip, 0x83);
576         if (csp_test2 != (csp_test1 ^ 0xff))
577                 goto __fail;
578
579         set_register(chip, 0x83, csp_test1);
580         csp_test2 = read_register(chip, 0x83);
581         if (csp_test2 != csp_test1)
582                 goto __fail;
583
584         set_mode_register(chip, 0x00);          /* 0x00 = ? */
585
586         *version = get_version(chip);
587         snd_sbdsp_reset(chip);  /* reset DSP after getversion! */
588         if (*version >= 0x10 && *version <= 0x1f)
589                 result = 0;             /* valid version id */
590
591       __fail:
592         spin_unlock_irqrestore(&chip->reg_lock, flags);
593         return result;
594 }
595
596 /*
597  * get CSP version number
598  */
599 static int get_version(struct snd_sb *chip)
600 {
601         unsigned char dsp_cmd[2];
602
603         dsp_cmd[0] = 0x08;      /* SB_DSP_!something! */
604         dsp_cmd[1] = 0x03;      /* get chip version id? */
605         command_seq(chip, dsp_cmd, 2);
606
607         return (snd_sbdsp_get_byte(chip));
608 }
609
610 /*
611  * check if the CSP version is valid
612  */
613 static int snd_sb_csp_check_version(struct snd_sb_csp * p)
614 {
615         if (p->version < 0x10 || p->version > 0x1f) {
616                 snd_printd("%s: Invalid CSP version: 0x%x\n", __FUNCTION__, p->version);
617                 return 1;
618         }
619         return 0;
620 }
621
622 /*
623  * download microcode to CSP (microcode should have one "main" block).
624  */
625 static int snd_sb_csp_load(struct snd_sb_csp * p, const unsigned char *buf, int size, int load_flags)
626 {
627         int status, i;
628         int err;
629         int result = -EIO;
630         unsigned long flags;
631
632         spin_lock_irqsave(&p->chip->reg_lock, flags);
633         snd_sbdsp_command(p->chip, 0x01);       /* CSP download command */
634         if (snd_sbdsp_get_byte(p->chip)) {
635                 snd_printd("%s: Download command failed\n", __FUNCTION__);
636                 goto __fail;
637         }
638         /* Send CSP low byte (size - 1) */
639         snd_sbdsp_command(p->chip, (unsigned char)(size - 1));
640         /* Send high byte */
641         snd_sbdsp_command(p->chip, (unsigned char)((size - 1) >> 8));
642         /* send microcode sequence */
643         /* load from kernel space */
644         while (size--) {
645                 if (!snd_sbdsp_command(p->chip, *buf++))
646                         goto __fail;
647         }
648         if (snd_sbdsp_get_byte(p->chip))
649                 goto __fail;
650
651         if (load_flags & SNDRV_SB_CSP_LOAD_INITBLOCK) {
652                 i = 0;
653                 /* some codecs (FastSpeech) take some time to initialize */
654                 while (1) {
655                         snd_sbdsp_command(p->chip, 0x03);
656                         status = snd_sbdsp_get_byte(p->chip);
657                         if (status == 0x55 || ++i >= 10)
658                                 break;
659                         udelay (10);
660                 }
661                 if (status != 0x55) {
662                         snd_printd("%s: Microcode initialization failed\n", __FUNCTION__);
663                         goto __fail;
664                 }
665         } else {
666                 /*
667                  * Read mixer register SB_DSP4_DMASETUP after loading 'main' code.
668                  * Start CSP chip if no 16bit DMA channel is set - some kind
669                  * of autorun or perhaps a bugfix?
670                  */
671                 spin_lock(&p->chip->mixer_lock);
672                 status = snd_sbmixer_read(p->chip, SB_DSP4_DMASETUP);
673                 spin_unlock(&p->chip->mixer_lock);
674                 if (!(status & (SB_DMASETUP_DMA7 | SB_DMASETUP_DMA6 | SB_DMASETUP_DMA5))) {
675                         err = (set_codec_parameter(p->chip, 0xaa, 0x00) ||
676                                set_codec_parameter(p->chip, 0xff, 0x00));
677                         snd_sbdsp_reset(p->chip);               /* really! */
678                         if (err)
679                                 goto __fail;
680                         set_mode_register(p->chip, 0xc0);       /* c0 = STOP */
681                         set_mode_register(p->chip, 0x70);       /* 70 = RUN */
682                 }
683         }
684         result = 0;
685
686       __fail:
687         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
688         return result;
689 }
690  
691 static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags)
692 {
693         int err = -ENOMEM;
694         unsigned char *kbuf = kmalloc(size, GFP_KERNEL);
695         if (kbuf) {
696                 if (copy_from_user(kbuf, buf, size))
697                         err = -EFAULT;
698                 else
699                         err = snd_sb_csp_load(p, kbuf, size, load_flags);
700                 kfree(kbuf);
701         }
702         return err;
703 }
704
705 #ifdef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
706 #include "sb16_csp_codecs.h"
707
708 static const struct firmware snd_sb_csp_static_programs[] = {
709         { .data = mulaw_main, .size = sizeof mulaw_main },
710         { .data = alaw_main, .size = sizeof alaw_main },
711         { .data = ima_adpcm_init, .size = sizeof ima_adpcm_init },
712         { .data = ima_adpcm_playback, .size = sizeof ima_adpcm_playback },
713         { .data = ima_adpcm_capture, .size = sizeof ima_adpcm_capture },
714 };
715 #endif
716
717 static int snd_sb_csp_firmware_load(struct snd_sb_csp *p, int index, int flags)
718 {
719         static const char *const names[] = {
720                 "sb16/mulaw_main.csp",
721                 "sb16/alaw_main.csp",
722                 "sb16/ima_adpcm_init.csp",
723                 "sb16/ima_adpcm_playback.csp",
724                 "sb16/ima_adpcm_capture.csp",
725         };
726         const struct firmware *program;
727
728         BUILD_BUG_ON(ARRAY_SIZE(names) != CSP_PROGRAM_COUNT);
729         program = p->csp_programs[index];
730         if (!program) {
731 #ifdef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
732                 program = &snd_sb_csp_static_programs[index];
733 #else
734                 int err = request_firmware(&program, names[index],
735                                        p->chip->card->dev);
736                 if (err < 0)
737                         return err;
738 #endif
739                 p->csp_programs[index] = program;
740         }
741         return snd_sb_csp_load(p, program->data, program->size, flags);
742 }
743
744 /*
745  * autoload hardware codec if necessary
746  * return 0 if CSP is loaded and ready to run (p->running != 0)
747  */
748 static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode)
749 {
750         unsigned long flags;
751         int err = 0;
752
753         /* if CSP is running or manually loaded then exit */
754         if (p->running & (SNDRV_SB_CSP_ST_RUNNING | SNDRV_SB_CSP_ST_LOADED)) 
755                 return -EBUSY;
756
757         /* autoload microcode only if requested hardware codec is not already loaded */
758         if (((1 << pcm_sfmt) & p->acc_format) && (play_rec_mode & p->mode)) {
759                 p->running = SNDRV_SB_CSP_ST_AUTO;
760         } else {
761                 switch (pcm_sfmt) {
762                 case SNDRV_PCM_FORMAT_MU_LAW:
763                         err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_MULAW, 0);
764                         p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
765                         p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
766                         break;
767                 case SNDRV_PCM_FORMAT_A_LAW:
768                         err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ALAW, 0);
769                         p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
770                         p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
771                         break;
772                 case SNDRV_PCM_FORMAT_IMA_ADPCM:
773                         err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ADPCM_INIT,
774                                                        SNDRV_SB_CSP_LOAD_INITBLOCK);
775                         if (err)
776                                 break;
777                         if (play_rec_mode == SNDRV_SB_CSP_MODE_DSP_WRITE) {
778                                 err = snd_sb_csp_firmware_load
779                                         (p, CSP_PROGRAM_ADPCM_PLAYBACK, 0);
780                                 p->mode = SNDRV_SB_CSP_MODE_DSP_WRITE;
781                         } else {
782                                 err = snd_sb_csp_firmware_load
783                                         (p, CSP_PROGRAM_ADPCM_CAPTURE, 0);
784                                 p->mode = SNDRV_SB_CSP_MODE_DSP_READ;
785                         }
786                         p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
787                         break;                            
788                 default:
789                         /* Decouple CSP from IRQ and DMAREQ lines */
790                         if (p->running & SNDRV_SB_CSP_ST_AUTO) {
791                                 spin_lock_irqsave(&p->chip->reg_lock, flags);
792                                 set_mode_register(p->chip, 0xfc);
793                                 set_mode_register(p->chip, 0x00);
794                                 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
795                                 p->running = 0;                 /* clear autoloaded flag */
796                         }
797                         return -EINVAL;
798                 }
799                 if (err) {
800                         p->acc_format = 0;
801                         p->acc_channels = p->acc_width = p->acc_rates = 0;
802
803                         p->running = 0;                         /* clear autoloaded flag */
804                         p->mode = 0;
805                         return (err);
806                 } else {
807                         p->running = SNDRV_SB_CSP_ST_AUTO;      /* set autoloaded flag */
808                         p->acc_width = SNDRV_SB_CSP_SAMPLE_16BIT;       /* only 16 bit data */
809                         p->acc_channels = SNDRV_SB_CSP_MONO | SNDRV_SB_CSP_STEREO;
810                         p->acc_rates = SNDRV_SB_CSP_RATE_ALL;   /* HW codecs accept all rates */
811                 }   
812
813         }
814         return (p->running & SNDRV_SB_CSP_ST_AUTO) ? 0 : -ENXIO;
815 }
816
817 /*
818  * start CSP
819  */
820 static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels)
821 {
822         unsigned char s_type;   /* sample type */
823         unsigned char mixL, mixR;
824         int result = -EIO;
825         unsigned long flags;
826
827         if (!(p->running & (SNDRV_SB_CSP_ST_LOADED | SNDRV_SB_CSP_ST_AUTO))) {
828                 snd_printd("%s: Microcode not loaded\n", __FUNCTION__);
829                 return -ENXIO;
830         }
831         if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
832                 snd_printd("%s: CSP already running\n", __FUNCTION__);
833                 return -EBUSY;
834         }
835         if (!(sample_width & p->acc_width)) {
836                 snd_printd("%s: Unsupported PCM sample width\n", __FUNCTION__);
837                 return -EINVAL;
838         }
839         if (!(channels & p->acc_channels)) {
840                 snd_printd("%s: Invalid number of channels\n", __FUNCTION__);
841                 return -EINVAL;
842         }
843
844         /* Mute PCM volume */
845         spin_lock_irqsave(&p->chip->mixer_lock, flags);
846         mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
847         mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
848         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
849         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
850
851         spin_lock(&p->chip->reg_lock);
852         set_mode_register(p->chip, 0xc0);       /* c0 = STOP */
853         set_mode_register(p->chip, 0x70);       /* 70 = RUN */
854
855         s_type = 0x00;
856         if (channels == SNDRV_SB_CSP_MONO)
857                 s_type = 0x11;  /* 000n 000n    (n = 1 if mono) */
858         if (sample_width == SNDRV_SB_CSP_SAMPLE_8BIT)
859                 s_type |= 0x22; /* 00dX 00dX    (d = 1 if 8 bit samples) */
860
861         if (set_codec_parameter(p->chip, 0x81, s_type)) {
862                 snd_printd("%s: Set sample type command failed\n", __FUNCTION__);
863                 goto __fail;
864         }
865         if (set_codec_parameter(p->chip, 0x80, 0x00)) {
866                 snd_printd("%s: Codec start command failed\n", __FUNCTION__);
867                 goto __fail;
868         }
869         p->run_width = sample_width;
870         p->run_channels = channels;
871
872         p->running |= SNDRV_SB_CSP_ST_RUNNING;
873
874         if (p->mode & SNDRV_SB_CSP_MODE_QSOUND) {
875                 set_codec_parameter(p->chip, 0xe0, 0x01);
876                 /* enable QSound decoder */
877                 set_codec_parameter(p->chip, 0x00, 0xff);
878                 set_codec_parameter(p->chip, 0x01, 0xff);
879                 p->running |= SNDRV_SB_CSP_ST_QSOUND;
880                 /* set QSound startup value */
881                 snd_sb_csp_qsound_transfer(p);
882         }
883         result = 0;
884
885       __fail:
886         spin_unlock(&p->chip->reg_lock);
887
888         /* restore PCM volume */
889         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
890         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
891         spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
892
893         return result;
894 }
895
896 /*
897  * stop CSP
898  */
899 static int snd_sb_csp_stop(struct snd_sb_csp * p)
900 {
901         int result;
902         unsigned char mixL, mixR;
903         unsigned long flags;
904
905         if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
906                 return 0;
907
908         /* Mute PCM volume */
909         spin_lock_irqsave(&p->chip->mixer_lock, flags);
910         mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
911         mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
912         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
913         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
914
915         spin_lock(&p->chip->reg_lock);
916         if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
917                 set_codec_parameter(p->chip, 0xe0, 0x01);
918                 /* disable QSound decoder */
919                 set_codec_parameter(p->chip, 0x00, 0x00);
920                 set_codec_parameter(p->chip, 0x01, 0x00);
921
922                 p->running &= ~SNDRV_SB_CSP_ST_QSOUND;
923         }
924         result = set_mode_register(p->chip, 0xc0);      /* c0 = STOP */
925         spin_unlock(&p->chip->reg_lock);
926
927         /* restore PCM volume */
928         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
929         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
930         spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
931
932         if (!(result))
933                 p->running &= ~(SNDRV_SB_CSP_ST_PAUSED | SNDRV_SB_CSP_ST_RUNNING);
934         return result;
935 }
936
937 /*
938  * pause CSP codec and hold DMA transfer
939  */
940 static int snd_sb_csp_pause(struct snd_sb_csp * p)
941 {
942         int result;
943         unsigned long flags;
944
945         if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
946                 return -EBUSY;
947
948         spin_lock_irqsave(&p->chip->reg_lock, flags);
949         result = set_codec_parameter(p->chip, 0x80, 0xff);
950         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
951         if (!(result))
952                 p->running |= SNDRV_SB_CSP_ST_PAUSED;
953
954         return result;
955 }
956
957 /*
958  * restart CSP codec and resume DMA transfer
959  */
960 static int snd_sb_csp_restart(struct snd_sb_csp * p)
961 {
962         int result;
963         unsigned long flags;
964
965         if (!(p->running & SNDRV_SB_CSP_ST_PAUSED))
966                 return -EBUSY;
967
968         spin_lock_irqsave(&p->chip->reg_lock, flags);
969         result = set_codec_parameter(p->chip, 0x80, 0x00);
970         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
971         if (!(result))
972                 p->running &= ~SNDRV_SB_CSP_ST_PAUSED;
973
974         return result;
975 }
976
977 /* ------------------------------ */
978
979 /*
980  * QSound mixer control for PCM
981  */
982
983 #define snd_sb_qsound_switch_info       snd_ctl_boolean_mono_info
984
985 static int snd_sb_qsound_switch_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
986 {
987         struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
988         
989         ucontrol->value.integer.value[0] = p->q_enabled ? 1 : 0;
990         return 0;
991 }
992
993 static int snd_sb_qsound_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
994 {
995         struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
996         unsigned long flags;
997         int change;
998         unsigned char nval;
999         
1000         nval = ucontrol->value.integer.value[0] & 0x01;
1001         spin_lock_irqsave(&p->q_lock, flags);
1002         change = p->q_enabled != nval;
1003         p->q_enabled = nval;
1004         spin_unlock_irqrestore(&p->q_lock, flags);
1005         return change;
1006 }
1007
1008 static int snd_sb_qsound_space_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1009 {
1010         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1011         uinfo->count = 2;
1012         uinfo->value.integer.min = 0;
1013         uinfo->value.integer.max = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1014         return 0;
1015 }
1016
1017 static int snd_sb_qsound_space_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1018 {
1019         struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
1020         unsigned long flags;
1021         
1022         spin_lock_irqsave(&p->q_lock, flags);
1023         ucontrol->value.integer.value[0] = p->qpos_left;
1024         ucontrol->value.integer.value[1] = p->qpos_right;
1025         spin_unlock_irqrestore(&p->q_lock, flags);
1026         return 0;
1027 }
1028
1029 static int snd_sb_qsound_space_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1030 {
1031         struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
1032         unsigned long flags;
1033         int change;
1034         unsigned char nval1, nval2;
1035         
1036         nval1 = ucontrol->value.integer.value[0];
1037         if (nval1 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
1038                 nval1 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1039         nval2 = ucontrol->value.integer.value[1];
1040         if (nval2 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
1041                 nval2 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1042         spin_lock_irqsave(&p->q_lock, flags);
1043         change = p->qpos_left != nval1 || p->qpos_right != nval2;
1044         p->qpos_left = nval1;
1045         p->qpos_right = nval2;
1046         p->qpos_changed = change;
1047         spin_unlock_irqrestore(&p->q_lock, flags);
1048         return change;
1049 }
1050
1051 static struct snd_kcontrol_new snd_sb_qsound_switch = {
1052         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1053         .name = "3D Control - Switch",
1054         .info = snd_sb_qsound_switch_info,
1055         .get = snd_sb_qsound_switch_get,
1056         .put = snd_sb_qsound_switch_put
1057 };
1058
1059 static struct snd_kcontrol_new snd_sb_qsound_space = {
1060         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1061         .name = "3D Control - Space",
1062         .info = snd_sb_qsound_space_info,
1063         .get = snd_sb_qsound_space_get,
1064         .put = snd_sb_qsound_space_put
1065 };
1066
1067 static int snd_sb_qsound_build(struct snd_sb_csp * p)
1068 {
1069         struct snd_card *card;
1070         int err;
1071
1072         snd_assert(p != NULL, return -EINVAL);
1073
1074         card = p->chip->card;
1075         p->qpos_left = p->qpos_right = SNDRV_SB_CSP_QSOUND_MAX_RIGHT / 2;
1076         p->qpos_changed = 0;
1077
1078         spin_lock_init(&p->q_lock);
1079
1080         if ((err = snd_ctl_add(card, p->qsound_switch = snd_ctl_new1(&snd_sb_qsound_switch, p))) < 0)
1081                 goto __error;
1082         if ((err = snd_ctl_add(card, p->qsound_space = snd_ctl_new1(&snd_sb_qsound_space, p))) < 0)
1083                 goto __error;
1084
1085         return 0;
1086
1087      __error:
1088         snd_sb_qsound_destroy(p);
1089         return err;
1090 }
1091
1092 static void snd_sb_qsound_destroy(struct snd_sb_csp * p)
1093 {
1094         struct snd_card *card;
1095         unsigned long flags;
1096
1097         snd_assert(p != NULL, return);
1098
1099         card = p->chip->card;   
1100         
1101         down_write(&card->controls_rwsem);
1102         if (p->qsound_switch)
1103                 snd_ctl_remove(card, p->qsound_switch);
1104         if (p->qsound_space)
1105                 snd_ctl_remove(card, p->qsound_space);
1106         up_write(&card->controls_rwsem);
1107
1108         /* cancel pending transfer of QSound parameters */
1109         spin_lock_irqsave (&p->q_lock, flags);
1110         p->qpos_changed = 0;
1111         spin_unlock_irqrestore (&p->q_lock, flags);
1112 }
1113
1114 /*
1115  * Transfer qsound parameters to CSP,
1116  * function should be called from interrupt routine
1117  */
1118 static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p)
1119 {
1120         int err = -ENXIO;
1121
1122         spin_lock(&p->q_lock);
1123         if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1124                 set_codec_parameter(p->chip, 0xe0, 0x01);
1125                 /* left channel */
1126                 set_codec_parameter(p->chip, 0x00, p->qpos_left);
1127                 set_codec_parameter(p->chip, 0x02, 0x00);
1128                 /* right channel */
1129                 set_codec_parameter(p->chip, 0x00, p->qpos_right);
1130                 set_codec_parameter(p->chip, 0x03, 0x00);
1131                 err = 0;
1132         }
1133         p->qpos_changed = 0;
1134         spin_unlock(&p->q_lock);
1135         return err;
1136 }
1137
1138 /* ------------------------------ */
1139
1140 /*
1141  * proc interface
1142  */
1143 static int init_proc_entry(struct snd_sb_csp * p, int device)
1144 {
1145         char name[16];
1146         struct snd_info_entry *entry;
1147         sprintf(name, "cspD%d", device);
1148         if (! snd_card_proc_new(p->chip->card, name, &entry))
1149                 snd_info_set_text_ops(entry, p, info_read);
1150         return 0;
1151 }
1152
1153 static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1154 {
1155         struct snd_sb_csp *p = entry->private_data;
1156
1157         snd_iprintf(buffer, "Creative Signal Processor [v%d.%d]\n", (p->version >> 4), (p->version & 0x0f));
1158         snd_iprintf(buffer, "State: %cx%c%c%c\n", ((p->running & SNDRV_SB_CSP_ST_QSOUND) ? 'Q' : '-'),
1159                     ((p->running & SNDRV_SB_CSP_ST_PAUSED) ? 'P' : '-'),
1160                     ((p->running & SNDRV_SB_CSP_ST_RUNNING) ? 'R' : '-'),
1161                     ((p->running & SNDRV_SB_CSP_ST_LOADED) ? 'L' : '-'));
1162         if (p->running & SNDRV_SB_CSP_ST_LOADED) {
1163                 snd_iprintf(buffer, "Codec: %s [func #%d]\n", p->codec_name, p->func_nr);
1164                 snd_iprintf(buffer, "Sample rates: ");
1165                 if (p->acc_rates == SNDRV_SB_CSP_RATE_ALL) {
1166                         snd_iprintf(buffer, "All\n");
1167                 } else {
1168                         snd_iprintf(buffer, "%s%s%s%s\n",
1169                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_8000) ? "8000Hz " : ""),
1170                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_11025) ? "11025Hz " : ""),
1171                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_22050) ? "22050Hz " : ""),
1172                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_44100) ? "44100Hz" : ""));
1173                 }
1174                 if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
1175                         snd_iprintf(buffer, "QSound decoder %sabled\n",
1176                                     p->q_enabled ? "en" : "dis");
1177                 } else {
1178                         snd_iprintf(buffer, "PCM format ID: 0x%x (%s/%s) [%s/%s] [%s/%s]\n",
1179                                     p->acc_format,
1180                                     ((p->acc_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? "16bit" : "-"),
1181                                     ((p->acc_width & SNDRV_SB_CSP_SAMPLE_8BIT) ? "8bit" : "-"),
1182                                     ((p->acc_channels & SNDRV_SB_CSP_MONO) ? "mono" : "-"),
1183                                     ((p->acc_channels & SNDRV_SB_CSP_STEREO) ? "stereo" : "-"),
1184                                     ((p->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) ? "playback" : "-"),
1185                                     ((p->mode & SNDRV_SB_CSP_MODE_DSP_READ) ? "capture" : "-"));
1186                 }
1187         }
1188         if (p->running & SNDRV_SB_CSP_ST_AUTO) {
1189                 snd_iprintf(buffer, "Autoloaded Mu-Law, A-Law or Ima-ADPCM hardware codec\n");
1190         }
1191         if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
1192                 snd_iprintf(buffer, "Processing %dbit %s PCM samples\n",
1193                             ((p->run_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? 16 : 8),
1194                             ((p->run_channels & SNDRV_SB_CSP_MONO) ? "mono" : "stereo"));
1195         }
1196         if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1197                 snd_iprintf(buffer, "Qsound position: left = 0x%x, right = 0x%x\n",
1198                             p->qpos_left, p->qpos_right);
1199         }
1200 }
1201
1202 /* */
1203
1204 EXPORT_SYMBOL(snd_sb_csp_new);
1205
1206 /*
1207  * INIT part
1208  */
1209
1210 static int __init alsa_sb_csp_init(void)
1211 {
1212         return 0;
1213 }
1214
1215 static void __exit alsa_sb_csp_exit(void)
1216 {
1217 }
1218
1219 module_init(alsa_sb_csp_init)
1220 module_exit(alsa_sb_csp_exit)