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TOMOYO Linux Cross Reference
Linux/sound/isa/sb/sb16_csp.c

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Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

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

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