f3fd7b4f46683d30b059b6808861b6ea2e303c31
[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 #ifndef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
39 MODULE_FIRMWARE("sb16/mulaw_main.csp");
40 MODULE_FIRMWARE("sb16/alaw_main.csp");
41 MODULE_FIRMWARE("sb16/ima_adpcm_init.csp");
42 MODULE_FIRMWARE("sb16/ima_adpcm_playback.csp");
43 MODULE_FIRMWARE("sb16/ima_adpcm_capture.csp");
44 #endif
45
46 #ifdef SNDRV_LITTLE_ENDIAN
47 #define CSP_HDR_VALUE(a,b,c,d)  ((a) | ((b)<<8) | ((c)<<16) | ((d)<<24))
48 #else
49 #define CSP_HDR_VALUE(a,b,c,d)  ((d) | ((c)<<8) | ((b)<<16) | ((a)<<24))
50 #endif
51
52 #define RIFF_HEADER     CSP_HDR_VALUE('R', 'I', 'F', 'F')
53 #define CSP__HEADER     CSP_HDR_VALUE('C', 'S', 'P', ' ')
54 #define LIST_HEADER     CSP_HDR_VALUE('L', 'I', 'S', 'T')
55 #define FUNC_HEADER     CSP_HDR_VALUE('f', 'u', 'n', 'c')
56 #define CODE_HEADER     CSP_HDR_VALUE('c', 'o', 'd', 'e')
57 #define INIT_HEADER     CSP_HDR_VALUE('i', 'n', 'i', 't')
58 #define MAIN_HEADER     CSP_HDR_VALUE('m', 'a', 'i', 'n')
59
60 /*
61  * RIFF data format
62  */
63 struct riff_header {
64         __u32 name;
65         __u32 len;
66 };
67
68 struct desc_header {
69         struct riff_header info;
70         __u16 func_nr;
71         __u16 VOC_type;
72         __u16 flags_play_rec;
73         __u16 flags_16bit_8bit;
74         __u16 flags_stereo_mono;
75         __u16 flags_rates;
76 };
77
78 /*
79  * prototypes
80  */
81 static void snd_sb_csp_free(struct snd_hwdep *hw);
82 static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file);
83 static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg);
84 static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file);
85
86 static int csp_detect(struct snd_sb *chip, int *version);
87 static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val);
88 static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val);
89 static int read_register(struct snd_sb *chip, unsigned char reg);
90 static int set_mode_register(struct snd_sb *chip, unsigned char mode);
91 static int get_version(struct snd_sb *chip);
92
93 static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
94                                 struct snd_sb_csp_microcode __user * code);
95 static int snd_sb_csp_unload(struct snd_sb_csp * p);
96 static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags);
97 static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode);
98 static int snd_sb_csp_check_version(struct snd_sb_csp * p);
99
100 static int snd_sb_csp_use(struct snd_sb_csp * p);
101 static int snd_sb_csp_unuse(struct snd_sb_csp * p);
102 static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels);
103 static int snd_sb_csp_stop(struct snd_sb_csp * p);
104 static int snd_sb_csp_pause(struct snd_sb_csp * p);
105 static int snd_sb_csp_restart(struct snd_sb_csp * p);
106
107 static int snd_sb_qsound_build(struct snd_sb_csp * p);
108 static void snd_sb_qsound_destroy(struct snd_sb_csp * p);
109 static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p);
110
111 static int init_proc_entry(struct snd_sb_csp * p, int device);
112 static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer);
113
114 /*
115  * Detect CSP chip and create a new instance
116  */
117 int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep)
118 {
119         struct snd_sb_csp *p;
120         int uninitialized_var(version);
121         int err;
122         struct snd_hwdep *hw;
123
124         if (rhwdep)
125                 *rhwdep = NULL;
126
127         if (csp_detect(chip, &version))
128                 return -ENODEV;
129
130         if ((err = snd_hwdep_new(chip->card, "SB16-CSP", device, &hw)) < 0)
131                 return err;
132
133         if ((p = kzalloc(sizeof(*p), GFP_KERNEL)) == NULL) {
134                 snd_device_free(chip->card, hw);
135                 return -ENOMEM;
136         }
137         p->chip = chip;
138         p->version = version;
139
140         /* CSP operators */
141         p->ops.csp_use = snd_sb_csp_use;
142         p->ops.csp_unuse = snd_sb_csp_unuse;
143         p->ops.csp_autoload = snd_sb_csp_autoload;
144         p->ops.csp_start = snd_sb_csp_start;
145         p->ops.csp_stop = snd_sb_csp_stop;
146         p->ops.csp_qsound_transfer = snd_sb_csp_qsound_transfer;
147
148         mutex_init(&p->access_mutex);
149         sprintf(hw->name, "CSP v%d.%d", (version >> 4), (version & 0x0f));
150         hw->iface = SNDRV_HWDEP_IFACE_SB16CSP;
151         hw->private_data = p;
152         hw->private_free = snd_sb_csp_free;
153
154         /* operators - only write/ioctl */
155         hw->ops.open = snd_sb_csp_open;
156         hw->ops.ioctl = snd_sb_csp_ioctl;
157         hw->ops.release = snd_sb_csp_release;
158
159         /* create a proc entry */
160         init_proc_entry(p, device);
161         if (rhwdep)
162                 *rhwdep = hw;
163         return 0;
164 }
165
166 /*
167  * free_private for hwdep instance
168  */
169 static void snd_sb_csp_free(struct snd_hwdep *hwdep)
170 {
171 #ifndef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
172         int i;
173 #endif
174         struct snd_sb_csp *p = hwdep->private_data;
175         if (p) {
176                 if (p->running & SNDRV_SB_CSP_ST_RUNNING)
177                         snd_sb_csp_stop(p);
178 #ifndef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
179                 for (i = 0; i < ARRAY_SIZE(p->csp_programs); ++i)
180                         release_firmware(p->csp_programs[i]);
181 #endif
182                 kfree(p);
183         }
184 }
185
186 /* ------------------------------ */
187
188 /*
189  * open the device exclusively
190  */
191 static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file)
192 {
193         struct snd_sb_csp *p = hw->private_data;
194         return (snd_sb_csp_use(p));
195 }
196
197 /*
198  * ioctl for hwdep device:
199  */
200 static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg)
201 {
202         struct snd_sb_csp *p = hw->private_data;
203         struct snd_sb_csp_info info;
204         struct snd_sb_csp_start start_info;
205         int err;
206
207         snd_assert(p != NULL, return -EINVAL);
208
209         if (snd_sb_csp_check_version(p))
210                 return -ENODEV;
211
212         switch (cmd) {
213                 /* get information */
214         case SNDRV_SB_CSP_IOCTL_INFO:
215                 *info.codec_name = *p->codec_name;
216                 info.func_nr = p->func_nr;
217                 info.acc_format = p->acc_format;
218                 info.acc_channels = p->acc_channels;
219                 info.acc_width = p->acc_width;
220                 info.acc_rates = p->acc_rates;
221                 info.csp_mode = p->mode;
222                 info.run_channels = p->run_channels;
223                 info.run_width = p->run_width;
224                 info.version = p->version;
225                 info.state = p->running;
226                 if (copy_to_user((void __user *)arg, &info, sizeof(info)))
227                         err = -EFAULT;
228                 else
229                         err = 0;
230                 break;
231
232                 /* load CSP microcode */
233         case SNDRV_SB_CSP_IOCTL_LOAD_CODE:
234                 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
235                        -EBUSY : snd_sb_csp_riff_load(p, (struct snd_sb_csp_microcode __user *) arg));
236                 break;
237         case SNDRV_SB_CSP_IOCTL_UNLOAD_CODE:
238                 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
239                        -EBUSY : snd_sb_csp_unload(p));
240                 break;
241
242                 /* change CSP running state */
243         case SNDRV_SB_CSP_IOCTL_START:
244                 if (copy_from_user(&start_info, (void __user *) arg, sizeof(start_info)))
245                         err = -EFAULT;
246                 else
247                         err = snd_sb_csp_start(p, start_info.sample_width, start_info.channels);
248                 break;
249         case SNDRV_SB_CSP_IOCTL_STOP:
250                 err = snd_sb_csp_stop(p);
251                 break;
252         case SNDRV_SB_CSP_IOCTL_PAUSE:
253                 err = snd_sb_csp_pause(p);
254                 break;
255         case SNDRV_SB_CSP_IOCTL_RESTART:
256                 err = snd_sb_csp_restart(p);
257                 break;
258         default:
259                 err = -ENOTTY;
260                 break;
261         }
262
263         return err;
264 }
265
266 /*
267  * close the device
268  */
269 static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file)
270 {
271         struct snd_sb_csp *p = hw->private_data;
272         return (snd_sb_csp_unuse(p));
273 }
274
275 /* ------------------------------ */
276
277 /*
278  * acquire device
279  */
280 static int snd_sb_csp_use(struct snd_sb_csp * p)
281 {
282         mutex_lock(&p->access_mutex);
283         if (p->used) {
284                 mutex_unlock(&p->access_mutex);
285                 return -EAGAIN;
286         }
287         p->used++;
288         mutex_unlock(&p->access_mutex);
289
290         return 0;
291
292 }
293
294 /*
295  * release device
296  */
297 static int snd_sb_csp_unuse(struct snd_sb_csp * p)
298 {
299         mutex_lock(&p->access_mutex);
300         p->used--;
301         mutex_unlock(&p->access_mutex);
302
303         return 0;
304 }
305
306 /*
307  * load microcode via ioctl: 
308  * code is user-space pointer
309  */
310 static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
311                                 struct snd_sb_csp_microcode __user * mcode)
312 {
313         struct snd_sb_csp_mc_header info;
314
315         unsigned char __user *data_ptr;
316         unsigned char __user *data_end;
317         unsigned short func_nr = 0;
318
319         struct riff_header file_h, item_h, code_h;
320         __u32 item_type;
321         struct desc_header funcdesc_h;
322
323         unsigned long flags;
324         int err;
325
326         if (copy_from_user(&info, mcode, sizeof(info)))
327                 return -EFAULT;
328         data_ptr = mcode->data;
329
330         if (copy_from_user(&file_h, data_ptr, sizeof(file_h)))
331                 return -EFAULT;
332         if ((file_h.name != RIFF_HEADER) ||
333             (le32_to_cpu(file_h.len) >= SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE - sizeof(file_h))) {
334                 snd_printd("%s: Invalid RIFF header\n", __func__);
335                 return -EINVAL;
336         }
337         data_ptr += sizeof(file_h);
338         data_end = data_ptr + le32_to_cpu(file_h.len);
339
340         if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
341                 return -EFAULT;
342         if (item_type != CSP__HEADER) {
343                 snd_printd("%s: Invalid RIFF file type\n", __func__);
344                 return -EINVAL;
345         }
346         data_ptr += sizeof (item_type);
347
348         for (; data_ptr < data_end; data_ptr += le32_to_cpu(item_h.len)) {
349                 if (copy_from_user(&item_h, data_ptr, sizeof(item_h)))
350                         return -EFAULT;
351                 data_ptr += sizeof(item_h);
352                 if (item_h.name != LIST_HEADER)
353                         continue;
354
355                 if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
356                          return -EFAULT;
357                 switch (item_type) {
358                 case FUNC_HEADER:
359                         if (copy_from_user(&funcdesc_h, data_ptr + sizeof(item_type), sizeof(funcdesc_h)))
360                                 return -EFAULT;
361                         func_nr = le16_to_cpu(funcdesc_h.func_nr);
362                         break;
363                 case CODE_HEADER:
364                         if (func_nr != info.func_req)
365                                 break;  /* not required function, try next */
366                         data_ptr += sizeof(item_type);
367
368                         /* destroy QSound mixer element */
369                         if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
370                                 snd_sb_qsound_destroy(p);
371                         }
372                         /* Clear all flags */
373                         p->running = 0;
374                         p->mode = 0;
375
376                         /* load microcode blocks */
377                         for (;;) {
378                                 if (data_ptr >= data_end)
379                                         return -EINVAL;
380                                 if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
381                                         return -EFAULT;
382
383                                 /* init microcode blocks */
384                                 if (code_h.name != INIT_HEADER)
385                                         break;
386                                 data_ptr += sizeof(code_h);
387                                 err = snd_sb_csp_load_user(p, data_ptr, le32_to_cpu(code_h.len),
388                                                       SNDRV_SB_CSP_LOAD_INITBLOCK);
389                                 if (err)
390                                         return err;
391                                 data_ptr += le32_to_cpu(code_h.len);
392                         }
393                         /* main microcode block */
394                         if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
395                                 return -EFAULT;
396
397                         if (code_h.name != MAIN_HEADER) {
398                                 snd_printd("%s: Missing 'main' microcode\n", __func__);
399                                 return -EINVAL;
400                         }
401                         data_ptr += sizeof(code_h);
402                         err = snd_sb_csp_load_user(p, data_ptr,
403                                                    le32_to_cpu(code_h.len), 0);
404                         if (err)
405                                 return err;
406
407                         /* fill in codec header */
408                         strlcpy(p->codec_name, info.codec_name, sizeof(p->codec_name));
409                         p->func_nr = func_nr;
410                         p->mode = le16_to_cpu(funcdesc_h.flags_play_rec);
411                         switch (le16_to_cpu(funcdesc_h.VOC_type)) {
412                         case 0x0001:    /* QSound decoder */
413                                 if (le16_to_cpu(funcdesc_h.flags_play_rec) == SNDRV_SB_CSP_MODE_DSP_WRITE) {
414                                         if (snd_sb_qsound_build(p) == 0)
415                                                 /* set QSound flag and clear all other mode flags */
416                                                 p->mode = SNDRV_SB_CSP_MODE_QSOUND;
417                                 }
418                                 p->acc_format = 0;
419                                 break;
420                         case 0x0006:    /* A Law codec */
421                                 p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
422                                 break;
423                         case 0x0007:    /* Mu Law codec */
424                                 p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
425                                 break;
426                         case 0x0011:    /* what Creative thinks is IMA ADPCM codec */
427                         case 0x0200:    /* Creative ADPCM codec */
428                                 p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
429                                 break;
430                         case    201:    /* Text 2 Speech decoder */
431                                 /* TODO: Text2Speech handling routines */
432                                 p->acc_format = 0;
433                                 break;
434                         case 0x0202:    /* Fast Speech 8 codec */
435                         case 0x0203:    /* Fast Speech 10 codec */
436                                 p->acc_format = SNDRV_PCM_FMTBIT_SPECIAL;
437                                 break;
438                         default:        /* other codecs are unsupported */
439                                 p->acc_format = p->acc_width = p->acc_rates = 0;
440                                 p->mode = 0;
441                                 snd_printd("%s: Unsupported CSP codec type: 0x%04x\n",
442                                            __func__,
443                                            le16_to_cpu(funcdesc_h.VOC_type));
444                                 return -EINVAL;
445                         }
446                         p->acc_channels = le16_to_cpu(funcdesc_h.flags_stereo_mono);
447                         p->acc_width = le16_to_cpu(funcdesc_h.flags_16bit_8bit);
448                         p->acc_rates = le16_to_cpu(funcdesc_h.flags_rates);
449
450                         /* Decouple CSP from IRQ and DMAREQ lines */
451                         spin_lock_irqsave(&p->chip->reg_lock, flags);
452                         set_mode_register(p->chip, 0xfc);
453                         set_mode_register(p->chip, 0x00);
454                         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
455
456                         /* finished loading successfully */
457                         p->running = SNDRV_SB_CSP_ST_LOADED;    /* set LOADED flag */
458                         return 0;
459                 }
460         }
461         snd_printd("%s: Function #%d not found\n", __func__, info.func_req);
462         return -EINVAL;
463 }
464
465 /*
466  * unload CSP microcode
467  */
468 static int snd_sb_csp_unload(struct snd_sb_csp * p)
469 {
470         if (p->running & SNDRV_SB_CSP_ST_RUNNING)
471                 return -EBUSY;
472         if (!(p->running & SNDRV_SB_CSP_ST_LOADED))
473                 return -ENXIO;
474
475         /* clear supported formats */
476         p->acc_format = 0;
477         p->acc_channels = p->acc_width = p->acc_rates = 0;
478         /* destroy QSound mixer element */
479         if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
480                 snd_sb_qsound_destroy(p);
481         }
482         /* clear all flags */
483         p->running = 0;
484         p->mode = 0;
485         return 0;
486 }
487
488 /*
489  * send command sequence to DSP
490  */
491 static inline int command_seq(struct snd_sb *chip, const unsigned char *seq, int size)
492 {
493         int i;
494         for (i = 0; i < size; i++) {
495                 if (!snd_sbdsp_command(chip, seq[i]))
496                         return -EIO;
497         }
498         return 0;
499 }
500
501 /*
502  * set CSP codec parameter
503  */
504 static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val)
505 {
506         unsigned char dsp_cmd[3];
507
508         dsp_cmd[0] = 0x05;      /* CSP set codec parameter */
509         dsp_cmd[1] = val;       /* Parameter value */
510         dsp_cmd[2] = par;       /* Parameter */
511         command_seq(chip, dsp_cmd, 3);
512         snd_sbdsp_command(chip, 0x03);  /* DSP read? */
513         if (snd_sbdsp_get_byte(chip) != par)
514                 return -EIO;
515         return 0;
516 }
517
518 /*
519  * set CSP register
520  */
521 static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val)
522 {
523         unsigned char dsp_cmd[3];
524
525         dsp_cmd[0] = 0x0e;      /* CSP set register */
526         dsp_cmd[1] = reg;       /* CSP Register */
527         dsp_cmd[2] = val;       /* value */
528         return command_seq(chip, dsp_cmd, 3);
529 }
530
531 /*
532  * read CSP register
533  * return < 0 -> error
534  */
535 static int read_register(struct snd_sb *chip, unsigned char reg)
536 {
537         unsigned char dsp_cmd[2];
538
539         dsp_cmd[0] = 0x0f;      /* CSP read register */
540         dsp_cmd[1] = reg;       /* CSP Register */
541         command_seq(chip, dsp_cmd, 2);
542         return snd_sbdsp_get_byte(chip);        /* Read DSP value */
543 }
544
545 /*
546  * set CSP mode register
547  */
548 static int set_mode_register(struct snd_sb *chip, unsigned char mode)
549 {
550         unsigned char dsp_cmd[2];
551
552         dsp_cmd[0] = 0x04;      /* CSP set mode register */
553         dsp_cmd[1] = mode;      /* mode */
554         return command_seq(chip, dsp_cmd, 2);
555 }
556
557 /*
558  * Detect CSP
559  * return 0 if CSP exists.
560  */
561 static int csp_detect(struct snd_sb *chip, int *version)
562 {
563         unsigned char csp_test1, csp_test2;
564         unsigned long flags;
565         int result = -ENODEV;
566
567         spin_lock_irqsave(&chip->reg_lock, flags);
568
569         set_codec_parameter(chip, 0x00, 0x00);
570         set_mode_register(chip, 0xfc);          /* 0xfc = ?? */
571
572         csp_test1 = read_register(chip, 0x83);
573         set_register(chip, 0x83, ~csp_test1);
574         csp_test2 = read_register(chip, 0x83);
575         if (csp_test2 != (csp_test1 ^ 0xff))
576                 goto __fail;
577
578         set_register(chip, 0x83, csp_test1);
579         csp_test2 = read_register(chip, 0x83);
580         if (csp_test2 != csp_test1)
581                 goto __fail;
582
583         set_mode_register(chip, 0x00);          /* 0x00 = ? */
584
585         *version = get_version(chip);
586         snd_sbdsp_reset(chip);  /* reset DSP after getversion! */
587         if (*version >= 0x10 && *version <= 0x1f)
588                 result = 0;             /* valid version id */
589
590       __fail:
591         spin_unlock_irqrestore(&chip->reg_lock, flags);
592         return result;
593 }
594
595 /*
596  * get CSP version number
597  */
598 static int get_version(struct snd_sb *chip)
599 {
600         unsigned char dsp_cmd[2];
601
602         dsp_cmd[0] = 0x08;      /* SB_DSP_!something! */
603         dsp_cmd[1] = 0x03;      /* get chip version id? */
604         command_seq(chip, dsp_cmd, 2);
605
606         return (snd_sbdsp_get_byte(chip));
607 }
608
609 /*
610  * check if the CSP version is valid
611  */
612 static int snd_sb_csp_check_version(struct snd_sb_csp * p)
613 {
614         if (p->version < 0x10 || p->version > 0x1f) {
615                 snd_printd("%s: Invalid CSP version: 0x%x\n", __func__, p->version);
616                 return 1;
617         }
618         return 0;
619 }
620
621 /*
622  * download microcode to CSP (microcode should have one "main" block).
623  */
624 static int snd_sb_csp_load(struct snd_sb_csp * p, const unsigned char *buf, int size, int load_flags)
625 {
626         int status, i;
627         int err;
628         int result = -EIO;
629         unsigned long flags;
630
631         spin_lock_irqsave(&p->chip->reg_lock, flags);
632         snd_sbdsp_command(p->chip, 0x01);       /* CSP download command */
633         if (snd_sbdsp_get_byte(p->chip)) {
634                 snd_printd("%s: Download command failed\n", __func__);
635                 goto __fail;
636         }
637         /* Send CSP low byte (size - 1) */
638         snd_sbdsp_command(p->chip, (unsigned char)(size - 1));
639         /* Send high byte */
640         snd_sbdsp_command(p->chip, (unsigned char)((size - 1) >> 8));
641         /* send microcode sequence */
642         /* load from kernel space */
643         while (size--) {
644                 if (!snd_sbdsp_command(p->chip, *buf++))
645                         goto __fail;
646         }
647         if (snd_sbdsp_get_byte(p->chip))
648                 goto __fail;
649
650         if (load_flags & SNDRV_SB_CSP_LOAD_INITBLOCK) {
651                 i = 0;
652                 /* some codecs (FastSpeech) take some time to initialize */
653                 while (1) {
654                         snd_sbdsp_command(p->chip, 0x03);
655                         status = snd_sbdsp_get_byte(p->chip);
656                         if (status == 0x55 || ++i >= 10)
657                                 break;
658                         udelay (10);
659                 }
660                 if (status != 0x55) {
661                         snd_printd("%s: Microcode initialization failed\n", __func__);
662                         goto __fail;
663                 }
664         } else {
665                 /*
666                  * Read mixer register SB_DSP4_DMASETUP after loading 'main' code.
667                  * Start CSP chip if no 16bit DMA channel is set - some kind
668                  * of autorun or perhaps a bugfix?
669                  */
670                 spin_lock(&p->chip->mixer_lock);
671                 status = snd_sbmixer_read(p->chip, SB_DSP4_DMASETUP);
672                 spin_unlock(&p->chip->mixer_lock);
673                 if (!(status & (SB_DMASETUP_DMA7 | SB_DMASETUP_DMA6 | SB_DMASETUP_DMA5))) {
674                         err = (set_codec_parameter(p->chip, 0xaa, 0x00) ||
675                                set_codec_parameter(p->chip, 0xff, 0x00));
676                         snd_sbdsp_reset(p->chip);               /* really! */
677                         if (err)
678                                 goto __fail;
679                         set_mode_register(p->chip, 0xc0);       /* c0 = STOP */
680                         set_mode_register(p->chip, 0x70);       /* 70 = RUN */
681                 }
682         }
683         result = 0;
684
685       __fail:
686         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
687         return result;
688 }
689  
690 static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags)
691 {
692         int err = -ENOMEM;
693         unsigned char *kbuf = kmalloc(size, GFP_KERNEL);
694         if (kbuf) {
695                 if (copy_from_user(kbuf, buf, size))
696                         err = -EFAULT;
697                 else
698                         err = snd_sb_csp_load(p, kbuf, size, load_flags);
699                 kfree(kbuf);
700         }
701         return err;
702 }
703
704 #ifdef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
705 #include "sb16_csp_codecs.h"
706
707 static const struct firmware snd_sb_csp_static_programs[] = {
708         { .data = mulaw_main, .size = sizeof mulaw_main },
709         { .data = alaw_main, .size = sizeof alaw_main },
710         { .data = ima_adpcm_init, .size = sizeof ima_adpcm_init },
711         { .data = ima_adpcm_playback, .size = sizeof ima_adpcm_playback },
712         { .data = ima_adpcm_capture, .size = sizeof ima_adpcm_capture },
713 };
714 #endif
715
716 static int snd_sb_csp_firmware_load(struct snd_sb_csp *p, int index, int flags)
717 {
718         static const char *const names[] = {
719                 "sb16/mulaw_main.csp",
720                 "sb16/alaw_main.csp",
721                 "sb16/ima_adpcm_init.csp",
722                 "sb16/ima_adpcm_playback.csp",
723                 "sb16/ima_adpcm_capture.csp",
724         };
725         const struct firmware *program;
726
727         BUILD_BUG_ON(ARRAY_SIZE(names) != CSP_PROGRAM_COUNT);
728         program = p->csp_programs[index];
729         if (!program) {
730 #ifdef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
731                 program = &snd_sb_csp_static_programs[index];
732 #else
733                 int err = request_firmware(&program, names[index],
734                                        p->chip->card->dev);
735                 if (err < 0)
736                         return err;
737 #endif
738                 p->csp_programs[index] = program;
739         }
740         return snd_sb_csp_load(p, program->data, program->size, flags);
741 }
742
743 /*
744  * autoload hardware codec if necessary
745  * return 0 if CSP is loaded and ready to run (p->running != 0)
746  */
747 static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode)
748 {
749         unsigned long flags;
750         int err = 0;
751
752         /* if CSP is running or manually loaded then exit */
753         if (p->running & (SNDRV_SB_CSP_ST_RUNNING | SNDRV_SB_CSP_ST_LOADED)) 
754                 return -EBUSY;
755
756         /* autoload microcode only if requested hardware codec is not already loaded */
757         if (((1 << pcm_sfmt) & p->acc_format) && (play_rec_mode & p->mode)) {
758                 p->running = SNDRV_SB_CSP_ST_AUTO;
759         } else {
760                 switch (pcm_sfmt) {
761                 case SNDRV_PCM_FORMAT_MU_LAW:
762                         err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_MULAW, 0);
763                         p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
764                         p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
765                         break;
766                 case SNDRV_PCM_FORMAT_A_LAW:
767                         err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ALAW, 0);
768                         p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
769                         p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
770                         break;
771                 case SNDRV_PCM_FORMAT_IMA_ADPCM:
772                         err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ADPCM_INIT,
773                                                        SNDRV_SB_CSP_LOAD_INITBLOCK);
774                         if (err)
775                                 break;
776                         if (play_rec_mode == SNDRV_SB_CSP_MODE_DSP_WRITE) {
777                                 err = snd_sb_csp_firmware_load
778                                         (p, CSP_PROGRAM_ADPCM_PLAYBACK, 0);
779                                 p->mode = SNDRV_SB_CSP_MODE_DSP_WRITE;
780                         } else {
781                                 err = snd_sb_csp_firmware_load
782                                         (p, CSP_PROGRAM_ADPCM_CAPTURE, 0);
783                                 p->mode = SNDRV_SB_CSP_MODE_DSP_READ;
784                         }
785                         p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
786                         break;                            
787                 default:
788                         /* Decouple CSP from IRQ and DMAREQ lines */
789                         if (p->running & SNDRV_SB_CSP_ST_AUTO) {
790                                 spin_lock_irqsave(&p->chip->reg_lock, flags);
791                                 set_mode_register(p->chip, 0xfc);
792                                 set_mode_register(p->chip, 0x00);
793                                 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
794                                 p->running = 0;                 /* clear autoloaded flag */
795                         }
796                         return -EINVAL;
797                 }
798                 if (err) {
799                         p->acc_format = 0;
800                         p->acc_channels = p->acc_width = p->acc_rates = 0;
801
802                         p->running = 0;                         /* clear autoloaded flag */
803                         p->mode = 0;
804                         return (err);
805                 } else {
806                         p->running = SNDRV_SB_CSP_ST_AUTO;      /* set autoloaded flag */
807                         p->acc_width = SNDRV_SB_CSP_SAMPLE_16BIT;       /* only 16 bit data */
808                         p->acc_channels = SNDRV_SB_CSP_MONO | SNDRV_SB_CSP_STEREO;
809                         p->acc_rates = SNDRV_SB_CSP_RATE_ALL;   /* HW codecs accept all rates */
810                 }   
811
812         }
813         return (p->running & SNDRV_SB_CSP_ST_AUTO) ? 0 : -ENXIO;
814 }
815
816 /*
817  * start CSP
818  */
819 static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels)
820 {
821         unsigned char s_type;   /* sample type */
822         unsigned char mixL, mixR;
823         int result = -EIO;
824         unsigned long flags;
825
826         if (!(p->running & (SNDRV_SB_CSP_ST_LOADED | SNDRV_SB_CSP_ST_AUTO))) {
827                 snd_printd("%s: Microcode not loaded\n", __func__);
828                 return -ENXIO;
829         }
830         if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
831                 snd_printd("%s: CSP already running\n", __func__);
832                 return -EBUSY;
833         }
834         if (!(sample_width & p->acc_width)) {
835                 snd_printd("%s: Unsupported PCM sample width\n", __func__);
836                 return -EINVAL;
837         }
838         if (!(channels & p->acc_channels)) {
839                 snd_printd("%s: Invalid number of channels\n", __func__);
840                 return -EINVAL;
841         }
842
843         /* Mute PCM volume */
844         spin_lock_irqsave(&p->chip->mixer_lock, flags);
845         mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
846         mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
847         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
848         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
849
850         spin_lock(&p->chip->reg_lock);
851         set_mode_register(p->chip, 0xc0);       /* c0 = STOP */
852         set_mode_register(p->chip, 0x70);       /* 70 = RUN */
853
854         s_type = 0x00;
855         if (channels == SNDRV_SB_CSP_MONO)
856                 s_type = 0x11;  /* 000n 000n    (n = 1 if mono) */
857         if (sample_width == SNDRV_SB_CSP_SAMPLE_8BIT)
858                 s_type |= 0x22; /* 00dX 00dX    (d = 1 if 8 bit samples) */
859
860         if (set_codec_parameter(p->chip, 0x81, s_type)) {
861                 snd_printd("%s: Set sample type command failed\n", __func__);
862                 goto __fail;
863         }
864         if (set_codec_parameter(p->chip, 0x80, 0x00)) {
865                 snd_printd("%s: Codec start command failed\n", __func__);
866                 goto __fail;
867         }
868         p->run_width = sample_width;
869         p->run_channels = channels;
870
871         p->running |= SNDRV_SB_CSP_ST_RUNNING;
872
873         if (p->mode & SNDRV_SB_CSP_MODE_QSOUND) {
874                 set_codec_parameter(p->chip, 0xe0, 0x01);
875                 /* enable QSound decoder */
876                 set_codec_parameter(p->chip, 0x00, 0xff);
877                 set_codec_parameter(p->chip, 0x01, 0xff);
878                 p->running |= SNDRV_SB_CSP_ST_QSOUND;
879                 /* set QSound startup value */
880                 snd_sb_csp_qsound_transfer(p);
881         }
882         result = 0;
883
884       __fail:
885         spin_unlock(&p->chip->reg_lock);
886
887         /* restore PCM volume */
888         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
889         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
890         spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
891
892         return result;
893 }
894
895 /*
896  * stop CSP
897  */
898 static int snd_sb_csp_stop(struct snd_sb_csp * p)
899 {
900         int result;
901         unsigned char mixL, mixR;
902         unsigned long flags;
903
904         if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
905                 return 0;
906
907         /* Mute PCM volume */
908         spin_lock_irqsave(&p->chip->mixer_lock, flags);
909         mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
910         mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
911         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
912         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
913
914         spin_lock(&p->chip->reg_lock);
915         if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
916                 set_codec_parameter(p->chip, 0xe0, 0x01);
917                 /* disable QSound decoder */
918                 set_codec_parameter(p->chip, 0x00, 0x00);
919                 set_codec_parameter(p->chip, 0x01, 0x00);
920
921                 p->running &= ~SNDRV_SB_CSP_ST_QSOUND;
922         }
923         result = set_mode_register(p->chip, 0xc0);      /* c0 = STOP */
924         spin_unlock(&p->chip->reg_lock);
925
926         /* restore PCM volume */
927         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
928         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
929         spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
930
931         if (!(result))
932                 p->running &= ~(SNDRV_SB_CSP_ST_PAUSED | SNDRV_SB_CSP_ST_RUNNING);
933         return result;
934 }
935
936 /*
937  * pause CSP codec and hold DMA transfer
938  */
939 static int snd_sb_csp_pause(struct snd_sb_csp * p)
940 {
941         int result;
942         unsigned long flags;
943
944         if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
945                 return -EBUSY;
946
947         spin_lock_irqsave(&p->chip->reg_lock, flags);
948         result = set_codec_parameter(p->chip, 0x80, 0xff);
949         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
950         if (!(result))
951                 p->running |= SNDRV_SB_CSP_ST_PAUSED;
952
953         return result;
954 }
955
956 /*
957  * restart CSP codec and resume DMA transfer
958  */
959 static int snd_sb_csp_restart(struct snd_sb_csp * p)
960 {
961         int result;
962         unsigned long flags;
963
964         if (!(p->running & SNDRV_SB_CSP_ST_PAUSED))
965                 return -EBUSY;
966
967         spin_lock_irqsave(&p->chip->reg_lock, flags);
968         result = set_codec_parameter(p->chip, 0x80, 0x00);
969         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
970         if (!(result))
971                 p->running &= ~SNDRV_SB_CSP_ST_PAUSED;
972
973         return result;
974 }
975
976 /* ------------------------------ */
977
978 /*
979  * QSound mixer control for PCM
980  */
981
982 #define snd_sb_qsound_switch_info       snd_ctl_boolean_mono_info
983
984 static int snd_sb_qsound_switch_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
985 {
986         struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
987         
988         ucontrol->value.integer.value[0] = p->q_enabled ? 1 : 0;
989         return 0;
990 }
991
992 static int snd_sb_qsound_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
993 {
994         struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
995         unsigned long flags;
996         int change;
997         unsigned char nval;
998         
999         nval = ucontrol->value.integer.value[0] & 0x01;
1000         spin_lock_irqsave(&p->q_lock, flags);
1001         change = p->q_enabled != nval;
1002         p->q_enabled = nval;
1003         spin_unlock_irqrestore(&p->q_lock, flags);
1004         return change;
1005 }
1006
1007 static int snd_sb_qsound_space_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1008 {
1009         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1010         uinfo->count = 2;
1011         uinfo->value.integer.min = 0;
1012         uinfo->value.integer.max = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1013         return 0;
1014 }
1015
1016 static int snd_sb_qsound_space_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1017 {
1018         struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
1019         unsigned long flags;
1020         
1021         spin_lock_irqsave(&p->q_lock, flags);
1022         ucontrol->value.integer.value[0] = p->qpos_left;
1023         ucontrol->value.integer.value[1] = p->qpos_right;
1024         spin_unlock_irqrestore(&p->q_lock, flags);
1025         return 0;
1026 }
1027
1028 static int snd_sb_qsound_space_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1029 {
1030         struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
1031         unsigned long flags;
1032         int change;
1033         unsigned char nval1, nval2;
1034         
1035         nval1 = ucontrol->value.integer.value[0];
1036         if (nval1 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
1037                 nval1 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1038         nval2 = ucontrol->value.integer.value[1];
1039         if (nval2 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
1040                 nval2 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1041         spin_lock_irqsave(&p->q_lock, flags);
1042         change = p->qpos_left != nval1 || p->qpos_right != nval2;
1043         p->qpos_left = nval1;
1044         p->qpos_right = nval2;
1045         p->qpos_changed = change;
1046         spin_unlock_irqrestore(&p->q_lock, flags);
1047         return change;
1048 }
1049
1050 static struct snd_kcontrol_new snd_sb_qsound_switch = {
1051         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1052         .name = "3D Control - Switch",
1053         .info = snd_sb_qsound_switch_info,
1054         .get = snd_sb_qsound_switch_get,
1055         .put = snd_sb_qsound_switch_put
1056 };
1057
1058 static struct snd_kcontrol_new snd_sb_qsound_space = {
1059         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1060         .name = "3D Control - Space",
1061         .info = snd_sb_qsound_space_info,
1062         .get = snd_sb_qsound_space_get,
1063         .put = snd_sb_qsound_space_put
1064 };
1065
1066 static int snd_sb_qsound_build(struct snd_sb_csp * p)
1067 {
1068         struct snd_card *card;
1069         int err;
1070
1071         snd_assert(p != NULL, return -EINVAL);
1072
1073         card = p->chip->card;
1074         p->qpos_left = p->qpos_right = SNDRV_SB_CSP_QSOUND_MAX_RIGHT / 2;
1075         p->qpos_changed = 0;
1076
1077         spin_lock_init(&p->q_lock);
1078
1079         if ((err = snd_ctl_add(card, p->qsound_switch = snd_ctl_new1(&snd_sb_qsound_switch, p))) < 0)
1080                 goto __error;
1081         if ((err = snd_ctl_add(card, p->qsound_space = snd_ctl_new1(&snd_sb_qsound_space, p))) < 0)
1082                 goto __error;
1083
1084         return 0;
1085
1086      __error:
1087         snd_sb_qsound_destroy(p);
1088         return err;
1089 }
1090
1091 static void snd_sb_qsound_destroy(struct snd_sb_csp * p)
1092 {
1093         struct snd_card *card;
1094         unsigned long flags;
1095
1096         snd_assert(p != NULL, return);
1097
1098         card = p->chip->card;   
1099         
1100         down_write(&card->controls_rwsem);
1101         if (p->qsound_switch)
1102                 snd_ctl_remove(card, p->qsound_switch);
1103         if (p->qsound_space)
1104                 snd_ctl_remove(card, p->qsound_space);
1105         up_write(&card->controls_rwsem);
1106
1107         /* cancel pending transfer of QSound parameters */
1108         spin_lock_irqsave (&p->q_lock, flags);
1109         p->qpos_changed = 0;
1110         spin_unlock_irqrestore (&p->q_lock, flags);
1111 }
1112
1113 /*
1114  * Transfer qsound parameters to CSP,
1115  * function should be called from interrupt routine
1116  */
1117 static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p)
1118 {
1119         int err = -ENXIO;
1120
1121         spin_lock(&p->q_lock);
1122         if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1123                 set_codec_parameter(p->chip, 0xe0, 0x01);
1124                 /* left channel */
1125                 set_codec_parameter(p->chip, 0x00, p->qpos_left);
1126                 set_codec_parameter(p->chip, 0x02, 0x00);
1127                 /* right channel */
1128                 set_codec_parameter(p->chip, 0x00, p->qpos_right);
1129                 set_codec_parameter(p->chip, 0x03, 0x00);
1130                 err = 0;
1131         }
1132         p->qpos_changed = 0;
1133         spin_unlock(&p->q_lock);
1134         return err;
1135 }
1136
1137 /* ------------------------------ */
1138
1139 /*
1140  * proc interface
1141  */
1142 static int init_proc_entry(struct snd_sb_csp * p, int device)
1143 {
1144         char name[16];
1145         struct snd_info_entry *entry;
1146         sprintf(name, "cspD%d", device);
1147         if (! snd_card_proc_new(p->chip->card, name, &entry))
1148                 snd_info_set_text_ops(entry, p, info_read);
1149         return 0;
1150 }
1151
1152 static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1153 {
1154         struct snd_sb_csp *p = entry->private_data;
1155
1156         snd_iprintf(buffer, "Creative Signal Processor [v%d.%d]\n", (p->version >> 4), (p->version & 0x0f));
1157         snd_iprintf(buffer, "State: %cx%c%c%c\n", ((p->running & SNDRV_SB_CSP_ST_QSOUND) ? 'Q' : '-'),
1158                     ((p->running & SNDRV_SB_CSP_ST_PAUSED) ? 'P' : '-'),
1159                     ((p->running & SNDRV_SB_CSP_ST_RUNNING) ? 'R' : '-'),
1160                     ((p->running & SNDRV_SB_CSP_ST_LOADED) ? 'L' : '-'));
1161         if (p->running & SNDRV_SB_CSP_ST_LOADED) {
1162                 snd_iprintf(buffer, "Codec: %s [func #%d]\n", p->codec_name, p->func_nr);
1163                 snd_iprintf(buffer, "Sample rates: ");
1164                 if (p->acc_rates == SNDRV_SB_CSP_RATE_ALL) {
1165                         snd_iprintf(buffer, "All\n");
1166                 } else {
1167                         snd_iprintf(buffer, "%s%s%s%s\n",
1168                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_8000) ? "8000Hz " : ""),
1169                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_11025) ? "11025Hz " : ""),
1170                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_22050) ? "22050Hz " : ""),
1171                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_44100) ? "44100Hz" : ""));
1172                 }
1173                 if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
1174                         snd_iprintf(buffer, "QSound decoder %sabled\n",
1175                                     p->q_enabled ? "en" : "dis");
1176                 } else {
1177                         snd_iprintf(buffer, "PCM format ID: 0x%x (%s/%s) [%s/%s] [%s/%s]\n",
1178                                     p->acc_format,
1179                                     ((p->acc_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? "16bit" : "-"),
1180                                     ((p->acc_width & SNDRV_SB_CSP_SAMPLE_8BIT) ? "8bit" : "-"),
1181                                     ((p->acc_channels & SNDRV_SB_CSP_MONO) ? "mono" : "-"),
1182                                     ((p->acc_channels & SNDRV_SB_CSP_STEREO) ? "stereo" : "-"),
1183                                     ((p->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) ? "playback" : "-"),
1184                                     ((p->mode & SNDRV_SB_CSP_MODE_DSP_READ) ? "capture" : "-"));
1185                 }
1186         }
1187         if (p->running & SNDRV_SB_CSP_ST_AUTO) {
1188                 snd_iprintf(buffer, "Autoloaded Mu-Law, A-Law or Ima-ADPCM hardware codec\n");
1189         }
1190         if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
1191                 snd_iprintf(buffer, "Processing %dbit %s PCM samples\n",
1192                             ((p->run_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? 16 : 8),
1193                             ((p->run_channels & SNDRV_SB_CSP_MONO) ? "mono" : "stereo"));
1194         }
1195         if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1196                 snd_iprintf(buffer, "Qsound position: left = 0x%x, right = 0x%x\n",
1197                             p->qpos_left, p->qpos_right);
1198         }
1199 }
1200
1201 /* */
1202
1203 EXPORT_SYMBOL(snd_sb_csp_new);
1204
1205 /*
1206  * INIT part
1207  */
1208
1209 static int __init alsa_sb_csp_init(void)
1210 {
1211         return 0;
1212 }
1213
1214 static void __exit alsa_sb_csp_exit(void)
1215 {
1216 }
1217
1218 module_init(alsa_sb_csp_init)
1219 module_exit(alsa_sb_csp_exit)