projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[PATCH] sb16_csp: remove home-grown le??_to_cpu macros
[deliverable/linux.git] / sound / isa / sb / sb16_csp.c
CommitLineData
1da177e4
LT		 1/*
2 * Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si>
3 * Takashi Iwai <tiwai@suse.de>
4 *
5 * SB16ASP/AWE32 CSP control
6 *
7 * CSP microcode loader:
8 * alsa-tools/sb16_csp/
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 *
24 */
25
26#include <sound/driver.h>
27#include <linux/delay.h>
28#include <linux/init.h>
29#include <linux/slab.h>
30#include <sound/core.h>
31#include <sound/control.h>
32#include <sound/info.h>
33#include <sound/sb16_csp.h>
34#include <sound/initval.h>
35
36MODULE_AUTHOR("Uros Bizjak <uros@kss-loka.si>");
37MODULE_DESCRIPTION("ALSA driver for SB16 Creative Signal Processor");
38MODULE_LICENSE("GPL");
39
40#ifdef SNDRV_LITTLE_ENDIAN
41#define CSP_HDR_VALUE(a,b,c,d) ((a) | ((b)<<8) | ((c)<<16) | ((d)<<24))
42#else
43#define CSP_HDR_VALUE(a,b,c,d) ((d) | ((c)<<8) | ((b)<<16) | ((a)<<24))
44#endif
1da177e4
LT		 45
46#define RIFF_HEADER CSP_HDR_VALUE('R', 'I', 'F', 'F')
47#define CSP__HEADER CSP_HDR_VALUE('C', 'S', 'P', ' ')
48#define LIST_HEADER CSP_HDR_VALUE('L', 'I', 'S', 'T')
49#define FUNC_HEADER CSP_HDR_VALUE('f', 'u', 'n', 'c')
50#define CODE_HEADER CSP_HDR_VALUE('c', 'o', 'd', 'e')
51#define INIT_HEADER CSP_HDR_VALUE('i', 'n', 'i', 't')
52#define MAIN_HEADER CSP_HDR_VALUE('m', 'a', 'i', 'n')
53
54/*
55 * RIFF data format
56 */
57typedef struct riff_header {
58 __u32 name;
59 __u32 len;
60} riff_header_t;
61
62typedef struct desc_header {
63 riff_header_t info;
64 __u16 func_nr;
65 __u16 VOC_type;
66 __u16 flags_play_rec;
67 __u16 flags_16bit_8bit;
68 __u16 flags_stereo_mono;
69 __u16 flags_rates;
70} desc_header_t;
71
72/*
73 * prototypes
74 */
75static void snd_sb_csp_free(snd_hwdep_t *hw);
76static int snd_sb_csp_open(snd_hwdep_t * hw, struct file *file);
77static int snd_sb_csp_ioctl(snd_hwdep_t * hw, struct file *file, unsigned int cmd, unsigned long arg);
78static int snd_sb_csp_release(snd_hwdep_t * hw, struct file *file);
79
80static int csp_detect(sb_t *chip, int *version);
81static int set_codec_parameter(sb_t *chip, unsigned char par, unsigned char val);
82static int set_register(sb_t *chip, unsigned char reg, unsigned char val);
83static int read_register(sb_t *chip, unsigned char reg);
84static int set_mode_register(sb_t *chip, unsigned char mode);
85static int get_version(sb_t *chip);
86
87static int snd_sb_csp_riff_load(snd_sb_csp_t * p, snd_sb_csp_microcode_t __user * code);
88static int snd_sb_csp_unload(snd_sb_csp_t * p);
89static int snd_sb_csp_load_user(snd_sb_csp_t * p, const unsigned char __user *buf, int size, int load_flags);
90static int snd_sb_csp_autoload(snd_sb_csp_t * p, int pcm_sfmt, int play_rec_mode);
91static int snd_sb_csp_check_version(snd_sb_csp_t * p);
92
93static int snd_sb_csp_use(snd_sb_csp_t * p);
94static int snd_sb_csp_unuse(snd_sb_csp_t * p);
95static int snd_sb_csp_start(snd_sb_csp_t * p, int sample_width, int channels);
96static int snd_sb_csp_stop(snd_sb_csp_t * p);
97static int snd_sb_csp_pause(snd_sb_csp_t * p);
98static int snd_sb_csp_restart(snd_sb_csp_t * p);
99
100static int snd_sb_qsound_build(snd_sb_csp_t * p);
101static void snd_sb_qsound_destroy(snd_sb_csp_t * p);
102static int snd_sb_csp_qsound_transfer(snd_sb_csp_t * p);
103
104static int init_proc_entry(snd_sb_csp_t * p, int device);
105static void info_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer);
106
107/*
108 * Detect CSP chip and create a new instance
109 */
110int snd_sb_csp_new(sb_t *chip, int device, snd_hwdep_t ** rhwdep)
111{
112 snd_sb_csp_t *p;
113 int version, err;
114 snd_hwdep_t *hw;
115
116 if (rhwdep)
117 *rhwdep = NULL;
118
119 if (csp_detect(chip, &version))
120 return -ENODEV;
121
122 if ((err = snd_hwdep_new(chip->card, "SB16-CSP", device, &hw)) < 0)
123 return err;
124
125 if ((p = kcalloc(1, sizeof(*p), GFP_KERNEL)) == NULL) {
126 snd_device_free(chip->card, hw);
127 return -ENOMEM;
128 }
129 p->chip = chip;
130 p->version = version;
131
132 /* CSP operators */
133 p->ops.csp_use = snd_sb_csp_use;
134 p->ops.csp_unuse = snd_sb_csp_unuse;
135 p->ops.csp_autoload = snd_sb_csp_autoload;
136 p->ops.csp_start = snd_sb_csp_start;
137 p->ops.csp_stop = snd_sb_csp_stop;
138 p->ops.csp_qsound_transfer = snd_sb_csp_qsound_transfer;
139
140 init_MUTEX(&p->access_mutex);
141 sprintf(hw->name, "CSP v%d.%d", (version >> 4), (version & 0x0f));
142 hw->iface = SNDRV_HWDEP_IFACE_SB16CSP;
143 hw->private_data = p;
144 hw->private_free = snd_sb_csp_free;
145
146 /* operators - only write/ioctl */
147 hw->ops.open = snd_sb_csp_open;
148 hw->ops.ioctl = snd_sb_csp_ioctl;
149 hw->ops.release = snd_sb_csp_release;
150
151 /* create a proc entry */
152 init_proc_entry(p, device);
153 if (rhwdep)
154 *rhwdep = hw;
155 return 0;
156}
157
158/*
159 * free_private for hwdep instance
160 */
161static void snd_sb_csp_free(snd_hwdep_t *hwdep)
162{
163 snd_sb_csp_t *p = hwdep->private_data;
164 if (p) {
165 if (p->running & SNDRV_SB_CSP_ST_RUNNING)
166 snd_sb_csp_stop(p);
167 kfree(p);
168 }
169}
170
171/* ------------------------------ */
172
173/*
174 * open the device exclusively
175 */
176static int snd_sb_csp_open(snd_hwdep_t * hw, struct file *file)
177{
178 snd_sb_csp_t *p = hw->private_data;
179 return (snd_sb_csp_use(p));
180}
181
182/*
183 * ioctl for hwdep device:
184 */
185static int snd_sb_csp_ioctl(snd_hwdep_t * hw, struct file *file, unsigned int cmd, unsigned long arg)
186{
187 snd_sb_csp_t *p = hw->private_data;
188 snd_sb_csp_info_t info;
189 snd_sb_csp_start_t start_info;
190 int err;
191
192 snd_assert(p != NULL, return -EINVAL);
193
194 if (snd_sb_csp_check_version(p))
195 return -ENODEV;
196
197 switch (cmd) {
198 /* get information */
199 case SNDRV_SB_CSP_IOCTL_INFO:
200 *info.codec_name = *p->codec_name;
201 info.func_nr = p->func_nr;
202 info.acc_format = p->acc_format;
203 info.acc_channels = p->acc_channels;
204 info.acc_width = p->acc_width;
205 info.acc_rates = p->acc_rates;
206 info.csp_mode = p->mode;
207 info.run_channels = p->run_channels;
208 info.run_width = p->run_width;
209 info.version = p->version;
210 info.state = p->running;
211 if (copy_to_user((void __user *)arg, &info, sizeof(info)))
212 err = -EFAULT;
213 else
214 err = 0;
215 break;
216
217 /* load CSP microcode */
218 case SNDRV_SB_CSP_IOCTL_LOAD_CODE:
219 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
220 -EBUSY : snd_sb_csp_riff_load(p, (snd_sb_csp_microcode_t __user *) arg));
221 break;
222 case SNDRV_SB_CSP_IOCTL_UNLOAD_CODE:
223 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
224 -EBUSY : snd_sb_csp_unload(p));
225 break;
226
227 /* change CSP running state */
228 case SNDRV_SB_CSP_IOCTL_START:
229 if (copy_from_user(&start_info, (void __user *) arg, sizeof(start_info)))
230 err = -EFAULT;
231 else
232 err = snd_sb_csp_start(p, start_info.sample_width, start_info.channels);
233 break;
234 case SNDRV_SB_CSP_IOCTL_STOP:
235 err = snd_sb_csp_stop(p);
236 break;
237 case SNDRV_SB_CSP_IOCTL_PAUSE:
238 err = snd_sb_csp_pause(p);
239 break;
240 case SNDRV_SB_CSP_IOCTL_RESTART:
241 err = snd_sb_csp_restart(p);
242 break;
243 default:
244 err = -ENOTTY;
245 break;
246 }
247
248 return err;
249}
250
251/*
252 * close the device
253 */
254static int snd_sb_csp_release(snd_hwdep_t * hw, struct file *file)
255{
256 snd_sb_csp_t *p = hw->private_data;
257 return (snd_sb_csp_unuse(p));
258}
259
260/* ------------------------------ */
261
262/*
263 * acquire device
264 */
265static int snd_sb_csp_use(snd_sb_csp_t * p)
266{
267 down(&p->access_mutex);
268 if (p->used) {
269 up(&p->access_mutex);
270 return -EAGAIN;
271 }
272 p->used++;
273 up(&p->access_mutex);
274
275 return 0;
276
277}
278
279/*
280 * release device
281 */
282static int snd_sb_csp_unuse(snd_sb_csp_t * p)
283{
284 down(&p->access_mutex);
285 p->used--;
286 up(&p->access_mutex);
287
288 return 0;
289}
290
291/*
292 * load microcode via ioctl:
293 * code is user-space pointer
294 */
295static int snd_sb_csp_riff_load(snd_sb_csp_t * p, snd_sb_csp_microcode_t __user * mcode)
296{
297 snd_sb_csp_mc_header_t info;
298
299 unsigned char __user *data_ptr;
300 unsigned char __user *data_end;
301 unsigned short func_nr = 0;
302
303 riff_header_t file_h, item_h, code_h;
304 __u32 item_type;
305 desc_header_t funcdesc_h;
306
307 unsigned long flags;
308 int err;
309
310 if (copy_from_user(&info, mcode, sizeof(info)))
311 return -EFAULT;
312 data_ptr = mcode->data;
313
314 if (copy_from_user(&file_h, data_ptr, sizeof(file_h)))
315 return -EFAULT;
316 if ((file_h.name != RIFF_HEADER) ||
31bbf8f5 317 (le32_to_cpu(file_h.len) >= SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE - sizeof(file_h))) {
1da177e4
LT		 318 snd_printd("%s: Invalid RIFF header\n", __FUNCTION__);
319 return -EINVAL;
320 }
321 data_ptr += sizeof(file_h);
31bbf8f5 322 data_end = data_ptr + le32_to_cpu(file_h.len);
1da177e4
LT		 323
324 if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
325 return -EFAULT;
326 if (item_type != CSP__HEADER) {
327 snd_printd("%s: Invalid RIFF file type\n", __FUNCTION__);
328 return -EINVAL;
329 }
330 data_ptr += sizeof (item_type);
331
31bbf8f5 332 for (; data_ptr < data_end; data_ptr += le32_to_cpu(item_h.len)) {
1da177e4
LT		 333 if (copy_from_user(&item_h, data_ptr, sizeof(item_h)))
334 return -EFAULT;
335 data_ptr += sizeof(item_h);
336 if (item_h.name != LIST_HEADER)
337 continue;
338
339 if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
340 return -EFAULT;
341 switch (item_type) {
342 case FUNC_HEADER:
343 if (copy_from_user(&funcdesc_h, data_ptr + sizeof(item_type), sizeof(funcdesc_h)))
344 return -EFAULT;
31bbf8f5 345 func_nr = le16_to_cpu(funcdesc_h.func_nr);
1da177e4
LT		 346 break;
347 case CODE_HEADER:
348 if (func_nr != info.func_req)
349 break; /* not required function, try next */
350 data_ptr += sizeof(item_type);
351
352 /* destroy QSound mixer element */
353 if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
354 snd_sb_qsound_destroy(p);
355 }
356 /* Clear all flags */
357 p->running = 0;
358 p->mode = 0;
359
360 /* load microcode blocks */
361 for (;;) {
362 if (data_ptr >= data_end)
363 return -EINVAL;
364 if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
365 return -EFAULT;
366
367 /* init microcode blocks */
368 if (code_h.name != INIT_HEADER)
369 break;
370 data_ptr += sizeof(code_h);
31bbf8f5 371 err = snd_sb_csp_load_user(p, data_ptr, le32_to_cpu(code_h.len),
1da177e4
LT		 372 SNDRV_SB_CSP_LOAD_INITBLOCK);
373 if (err)
374 return err;
31bbf8f5 375 data_ptr += le32_to_cpu(code_h.len);
1da177e4
LT		 376 }
377 /* main microcode block */
378 if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
379 return -EFAULT;
380
381 if (code_h.name != MAIN_HEADER) {
382 snd_printd("%s: Missing 'main' microcode\n", __FUNCTION__);
383 return -EINVAL;
384 }
385 data_ptr += sizeof(code_h);
386 err = snd_sb_csp_load_user(p, data_ptr,
31bbf8f5 387 le32_to_cpu(code_h.len), 0);
1da177e4
LT		 388 if (err)
389 return err;
390
391 /* fill in codec header */
392 strlcpy(p->codec_name, info.codec_name, sizeof(p->codec_name));
393 p->func_nr = func_nr;
31bbf8f5
AD		 394 p->mode = le16_to_cpu(funcdesc_h.flags_play_rec);
395 switch (le16_to_cpu(funcdesc_h.VOC_type)) {
1da177e4 396 case 0x0001: /* QSound decoder */
31bbf8f5 397 if (le16_to_cpu(funcdesc_h.flags_play_rec) == SNDRV_SB_CSP_MODE_DSP_WRITE) {
1da177e4
LT		 398 if (snd_sb_qsound_build(p) == 0)
399 /* set QSound flag and clear all other mode flags */
400 p->mode = SNDRV_SB_CSP_MODE_QSOUND;
401 }
402 p->acc_format = 0;
403 break;
404 case 0x0006: /* A Law codec */
405 p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
406 break;
407 case 0x0007: /* Mu Law codec */
408 p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
409 break;
410 case 0x0011: /* what Creative thinks is IMA ADPCM codec */
411 case 0x0200: /* Creative ADPCM codec */
412 p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
413 break;
414 case 201: /* Text 2 Speech decoder */
415 /* TODO: Text2Speech handling routines */
416 p->acc_format = 0;
417 break;
418 case 0x0202: /* Fast Speech 8 codec */
419 case 0x0203: /* Fast Speech 10 codec */
420 p->acc_format = SNDRV_PCM_FMTBIT_SPECIAL;
421 break;
422 default: /* other codecs are unsupported */
423 p->acc_format = p->acc_width = p->acc_rates = 0;
424 p->mode = 0;
425 snd_printd("%s: Unsupported CSP codec type: 0x%04x\n",
426 __FUNCTION__,
31bbf8f5 427 le16_to_cpu(funcdesc_h.VOC_type));
1da177e4
LT		 428 return -EINVAL;
429 }
31bbf8f5
AD		 430 p->acc_channels = le16_to_cpu(funcdesc_h.flags_stereo_mono);
431 p->acc_width = le16_to_cpu(funcdesc_h.flags_16bit_8bit);
432 p->acc_rates = le16_to_cpu(funcdesc_h.flags_rates);
1da177e4
LT		 433
434 /* Decouple CSP from IRQ and DMAREQ lines */
435 spin_lock_irqsave(&p->chip->reg_lock, flags);
436 set_mode_register(p->chip, 0xfc);
437 set_mode_register(p->chip, 0x00);
438 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
439
440 /* finished loading successfully */
441 p->running = SNDRV_SB_CSP_ST_LOADED; /* set LOADED flag */
442 return 0;
443 }
444 }
445 snd_printd("%s: Function #%d not found\n", __FUNCTION__, info.func_req);
446 return -EINVAL;
447}
448
449/*
450 * unload CSP microcode
451 */
452static int snd_sb_csp_unload(snd_sb_csp_t * p)
453{
454 if (p->running & SNDRV_SB_CSP_ST_RUNNING)
455 return -EBUSY;
456 if (!(p->running & SNDRV_SB_CSP_ST_LOADED))
457 return -ENXIO;
458
459 /* clear supported formats */
460 p->acc_format = 0;
461 p->acc_channels = p->acc_width = p->acc_rates = 0;
462 /* destroy QSound mixer element */
463 if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
464 snd_sb_qsound_destroy(p);
465 }
466 /* clear all flags */
467 p->running = 0;
468 p->mode = 0;
469 return 0;
470}
471
472/*
473 * send command sequence to DSP
474 */
475static inline int command_seq(sb_t *chip, const unsigned char *seq, int size)
476{
477 int i;
478 for (i = 0; i < size; i++) {
479 if (!snd_sbdsp_command(chip, seq[i]))
480 return -EIO;
481 }
482 return 0;
483}
484
485/*
486 * set CSP codec parameter
487 */
488static int set_codec_parameter(sb_t *chip, unsigned char par, unsigned char val)
489{
490 unsigned char dsp_cmd[3];
491
492 dsp_cmd[0] = 0x05; /* CSP set codec parameter */
493 dsp_cmd[1] = val; /* Parameter value */
494 dsp_cmd[2] = par; /* Parameter */
495 command_seq(chip, dsp_cmd, 3);
496 snd_sbdsp_command(chip, 0x03); /* DSP read? */
497 if (snd_sbdsp_get_byte(chip) != par)
498 return -EIO;
499 return 0;
500}
501
502/*
503 * set CSP register
504 */
505static int set_register(sb_t *chip, unsigned char reg, unsigned char val)
506{
507 unsigned char dsp_cmd[3];
508
509 dsp_cmd[0] = 0x0e; /* CSP set register */
510 dsp_cmd[1] = reg; /* CSP Register */
511 dsp_cmd[2] = val; /* value */
512 return command_seq(chip, dsp_cmd, 3);
513}
514
515/*
516 * read CSP register
517 * return < 0 -> error
518 */
519static int read_register(sb_t *chip, unsigned char reg)
520{
521 unsigned char dsp_cmd[2];
522
523 dsp_cmd[0] = 0x0f; /* CSP read register */
524 dsp_cmd[1] = reg; /* CSP Register */
525 command_seq(chip, dsp_cmd, 2);
526 return snd_sbdsp_get_byte(chip); /* Read DSP value */
527}
528
529/*
530 * set CSP mode register
531 */
532static int set_mode_register(sb_t *chip, unsigned char mode)
533{
534 unsigned char dsp_cmd[2];
535
536 dsp_cmd[0] = 0x04; /* CSP set mode register */
537 dsp_cmd[1] = mode; /* mode */
538 return command_seq(chip, dsp_cmd, 2);
539}
540
541/*
542 * Detect CSP
543 * return 0 if CSP exists.
544 */
545static int csp_detect(sb_t *chip, int *version)
546{
547 unsigned char csp_test1, csp_test2;
548 unsigned long flags;
549 int result = -ENODEV;
550
551 spin_lock_irqsave(&chip->reg_lock, flags);
552
553 set_codec_parameter(chip, 0x00, 0x00);
554 set_mode_register(chip, 0xfc); /* 0xfc = ?? */
555
556 csp_test1 = read_register(chip, 0x83);
557 set_register(chip, 0x83, ~csp_test1);
558 csp_test2 = read_register(chip, 0x83);
559 if (csp_test2 != (csp_test1 ^ 0xff))
560 goto __fail;
561
562 set_register(chip, 0x83, csp_test1);
563 csp_test2 = read_register(chip, 0x83);
564 if (csp_test2 != csp_test1)
565 goto __fail;
566
567 set_mode_register(chip, 0x00); /* 0x00 = ? */
568
569 *version = get_version(chip);
570 snd_sbdsp_reset(chip); /* reset DSP after getversion! */
571 if (*version >= 0x10 && *version <= 0x1f)
572 result = 0; /* valid version id */
573
574 __fail:
575 spin_unlock_irqrestore(&chip->reg_lock, flags);
576 return result;
577}
578
579/*
580 * get CSP version number
581 */
582static int get_version(sb_t *chip)
583{
584 unsigned char dsp_cmd[2];
585
586 dsp_cmd[0] = 0x08; /* SB_DSP_!something! */
587 dsp_cmd[1] = 0x03; /* get chip version id? */
588 command_seq(chip, dsp_cmd, 2);
589
590 return (snd_sbdsp_get_byte(chip));
591}
592
593/*
594 * check if the CSP version is valid
595 */
596static int snd_sb_csp_check_version(snd_sb_csp_t * p)
597{
598 if (p->version < 0x10 || p->version > 0x1f) {
599 snd_printd("%s: Invalid CSP version: 0x%x\n", __FUNCTION__, p->version);
600 return 1;
601 }
602 return 0;
603}
604
605/*
606 * download microcode to CSP (microcode should have one "main" block).
607 */
608static int snd_sb_csp_load(snd_sb_csp_t * p, const unsigned char *buf, int size, int load_flags)
609{
610 int status, i;
611 int err;
612 int result = -EIO;
613 unsigned long flags;
614
615 spin_lock_irqsave(&p->chip->reg_lock, flags);
616 snd_sbdsp_command(p->chip, 0x01); /* CSP download command */
617 if (snd_sbdsp_get_byte(p->chip)) {
618 snd_printd("%s: Download command failed\n", __FUNCTION__);
619 goto __fail;
620 }
621 /* Send CSP low byte (size - 1) */
622 snd_sbdsp_command(p->chip, (unsigned char)(size - 1));
623 /* Send high byte */
624 snd_sbdsp_command(p->chip, (unsigned char)((size - 1) >> 8));
625 /* send microcode sequence */
626 /* load from kernel space */
627 while (size--) {
628 if (!snd_sbdsp_command(p->chip, *buf++))
629 goto __fail;
630 }
631 if (snd_sbdsp_get_byte(p->chip))
632 goto __fail;
633
634 if (load_flags & SNDRV_SB_CSP_LOAD_INITBLOCK) {
635 i = 0;
636 /* some codecs (FastSpeech) take some time to initialize */
637 while (1) {
638 snd_sbdsp_command(p->chip, 0x03);
639 status = snd_sbdsp_get_byte(p->chip);
640 if (status == 0x55 || ++i >= 10)
641 break;
642 udelay (10);
643 }
644 if (status != 0x55) {
645 snd_printd("%s: Microcode initialization failed\n", __FUNCTION__);
646 goto __fail;
647 }
648 } else {
649 /*
650 * Read mixer register SB_DSP4_DMASETUP after loading 'main' code.
651 * Start CSP chip if no 16bit DMA channel is set - some kind
652 * of autorun or perhaps a bugfix?
653 */
654 spin_lock(&p->chip->mixer_lock);
655 status = snd_sbmixer_read(p->chip, SB_DSP4_DMASETUP);
656 spin_unlock(&p->chip->mixer_lock);
657 if (!(status & (SB_DMASETUP_DMA7 | SB_DMASETUP_DMA6 | SB_DMASETUP_DMA5))) {
658 err = (set_codec_parameter(p->chip, 0xaa, 0x00) ||
659 set_codec_parameter(p->chip, 0xff, 0x00));
660 snd_sbdsp_reset(p->chip); /* really! */
661 if (err)
662 goto __fail;
663 set_mode_register(p->chip, 0xc0); /* c0 = STOP */
664 set_mode_register(p->chip, 0x70); /* 70 = RUN */
665 }
666 }
667 result = 0;
668
669 __fail:
670 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
671 return result;
672}
673
674static int snd_sb_csp_load_user(snd_sb_csp_t * p, const unsigned char __user *buf, int size, int load_flags)
675{
676 int err = -ENOMEM;
677 unsigned char *kbuf = kmalloc(size, GFP_KERNEL);
678 if (kbuf) {
679 if (copy_from_user(kbuf, buf, size))
680 err = -EFAULT;
681 else
682 err = snd_sb_csp_load(p, kbuf, size, load_flags);
683 kfree(kbuf);
684 }
685 return err;
686}
687
688#include "sb16_csp_codecs.h"
689
690/*
691 * autoload hardware codec if necessary
692 * return 0 if CSP is loaded and ready to run (p->running != 0)
693 */
694static int snd_sb_csp_autoload(snd_sb_csp_t * p, int pcm_sfmt, int play_rec_mode)
695{
696 unsigned long flags;
697 int err = 0;
698
699 /* if CSP is running or manually loaded then exit */
700 if (p->running & (SNDRV_SB_CSP_ST_RUNNING | SNDRV_SB_CSP_ST_LOADED))
701 return -EBUSY;
702
703 /* autoload microcode only if requested hardware codec is not already loaded */
704 if (((1 << pcm_sfmt) & p->acc_format) && (play_rec_mode & p->mode)) {
705 p->running = SNDRV_SB_CSP_ST_AUTO;
706 } else {
707 switch (pcm_sfmt) {
708 case SNDRV_PCM_FORMAT_MU_LAW:
709 err = snd_sb_csp_load(p, &mulaw_main[0], sizeof(mulaw_main), 0);
710 p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
711 p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
712 break;
713 case SNDRV_PCM_FORMAT_A_LAW:
714 err = snd_sb_csp_load(p, &alaw_main[0], sizeof(alaw_main), 0);
715 p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
716 p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
717 break;
718 case SNDRV_PCM_FORMAT_IMA_ADPCM:
719 err = snd_sb_csp_load(p, &ima_adpcm_init[0], sizeof(ima_adpcm_init),
720 SNDRV_SB_CSP_LOAD_INITBLOCK);
721 if (err)
722 break;
723 if (play_rec_mode == SNDRV_SB_CSP_MODE_DSP_WRITE) {
724 err = snd_sb_csp_load(p, &ima_adpcm_playback[0],
725 sizeof(ima_adpcm_playback), 0);
726 p->mode = SNDRV_SB_CSP_MODE_DSP_WRITE;
727 } else {
728 err = snd_sb_csp_load(p, &ima_adpcm_capture[0],
729 sizeof(ima_adpcm_capture), 0);
730 p->mode = SNDRV_SB_CSP_MODE_DSP_READ;
731 }
732 p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
733 break;
734 default:
735 /* Decouple CSP from IRQ and DMAREQ lines */
736 if (p->running & SNDRV_SB_CSP_ST_AUTO) {
737 spin_lock_irqsave(&p->chip->reg_lock, flags);
738 set_mode_register(p->chip, 0xfc);
739 set_mode_register(p->chip, 0x00);
740 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
741 p->running = 0; /* clear autoloaded flag */
742 }
743 return -EINVAL;
744 }
745 if (err) {
746 p->acc_format = 0;
747 p->acc_channels = p->acc_width = p->acc_rates = 0;
748
749 p->running = 0; /* clear autoloaded flag */
750 p->mode = 0;
751 return (err);
752 } else {
753 p->running = SNDRV_SB_CSP_ST_AUTO; /* set autoloaded flag */
754 p->acc_width = SNDRV_SB_CSP_SAMPLE_16BIT; /* only 16 bit data */
755 p->acc_channels = SNDRV_SB_CSP_MONO | SNDRV_SB_CSP_STEREO;
756 p->acc_rates = SNDRV_SB_CSP_RATE_ALL; /* HW codecs accept all rates */
757 }
758
759 }
760 return (p->running & SNDRV_SB_CSP_ST_AUTO) ? 0 : -ENXIO;
761}
762
763/*
764 * start CSP
765 */
766static int snd_sb_csp_start(snd_sb_csp_t * p, int sample_width, int channels)
767{
768 unsigned char s_type; /* sample type */
769 unsigned char mixL, mixR;
770 int result = -EIO;
771 unsigned long flags;
772
773 if (!(p->running & (SNDRV_SB_CSP_ST_LOADED | SNDRV_SB_CSP_ST_AUTO))) {
774 snd_printd("%s: Microcode not loaded\n", __FUNCTION__);
775 return -ENXIO;
776 }
777 if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
778 snd_printd("%s: CSP already running\n", __FUNCTION__);
779 return -EBUSY;
780 }
781 if (!(sample_width & p->acc_width)) {
782 snd_printd("%s: Unsupported PCM sample width\n", __FUNCTION__);
783 return -EINVAL;
784 }
785 if (!(channels & p->acc_channels)) {
786 snd_printd("%s: Invalid number of channels\n", __FUNCTION__);
787 return -EINVAL;
788 }
789
790 /* Mute PCM volume */
791 spin_lock_irqsave(&p->chip->mixer_lock, flags);
792 mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
793 mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
794 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
795 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
796
797 spin_lock(&p->chip->reg_lock);
798 set_mode_register(p->chip, 0xc0); /* c0 = STOP */
799 set_mode_register(p->chip, 0x70); /* 70 = RUN */
800
801 s_type = 0x00;
802 if (channels == SNDRV_SB_CSP_MONO)
803 s_type = 0x11; /* 000n 000n (n = 1 if mono) */
804 if (sample_width == SNDRV_SB_CSP_SAMPLE_8BIT)
805 s_type |= 0x22; /* 00dX 00dX (d = 1 if 8 bit samples) */
806
807 if (set_codec_parameter(p->chip, 0x81, s_type)) {
808 snd_printd("%s: Set sample type command failed\n", __FUNCTION__);
809 goto __fail;
810 }
811 if (set_codec_parameter(p->chip, 0x80, 0x00)) {
812 snd_printd("%s: Codec start command failed\n", __FUNCTION__);
813 goto __fail;
814 }
815 p->run_width = sample_width;
816 p->run_channels = channels;
817
818 p->running |= SNDRV_SB_CSP_ST_RUNNING;
819
820 if (p->mode & SNDRV_SB_CSP_MODE_QSOUND) {
821 set_codec_parameter(p->chip, 0xe0, 0x01);
822 /* enable QSound decoder */
823 set_codec_parameter(p->chip, 0x00, 0xff);
824 set_codec_parameter(p->chip, 0x01, 0xff);
825 p->running |= SNDRV_SB_CSP_ST_QSOUND;
826 /* set QSound startup value */
827 snd_sb_csp_qsound_transfer(p);
828 }
829 result = 0;
830
831 __fail:
832 spin_unlock(&p->chip->reg_lock);
833
834 /* restore PCM volume */
835 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
836 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
837 spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
838
839 return result;
840}
841
842/*
843 * stop CSP
844 */
845static int snd_sb_csp_stop(snd_sb_csp_t * p)
846{
847 int result;
848 unsigned char mixL, mixR;
849 unsigned long flags;
850
851 if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
852 return 0;
853
854 /* Mute PCM volume */
855 spin_lock_irqsave(&p->chip->mixer_lock, flags);
856 mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
857 mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
858 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
859 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
860
861 spin_lock(&p->chip->reg_lock);
862 if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
863 set_codec_parameter(p->chip, 0xe0, 0x01);
864 /* disable QSound decoder */
865 set_codec_parameter(p->chip, 0x00, 0x00);
866 set_codec_parameter(p->chip, 0x01, 0x00);
867
868 p->running &= ~SNDRV_SB_CSP_ST_QSOUND;
869 }
870 result = set_mode_register(p->chip, 0xc0); /* c0 = STOP */
871 spin_unlock(&p->chip->reg_lock);
872
873 /* restore PCM volume */
874 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
875 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
876 spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
877
878 if (!(result))
879 p->running &= ~(SNDRV_SB_CSP_ST_PAUSED | SNDRV_SB_CSP_ST_RUNNING);
880 return result;
881}
882
883/*
884 * pause CSP codec and hold DMA transfer
885 */
886static int snd_sb_csp_pause(snd_sb_csp_t * p)
887{
888 int result;
889 unsigned long flags;
890
891 if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
892 return -EBUSY;
893
894 spin_lock_irqsave(&p->chip->reg_lock, flags);
895 result = set_codec_parameter(p->chip, 0x80, 0xff);
896 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
897 if (!(result))
898 p->running |= SNDRV_SB_CSP_ST_PAUSED;
899
900 return result;
901}
902
903/*
904 * restart CSP codec and resume DMA transfer
905 */
906static int snd_sb_csp_restart(snd_sb_csp_t * p)
907{
908 int result;
909 unsigned long flags;
910
911 if (!(p->running & SNDRV_SB_CSP_ST_PAUSED))
912 return -EBUSY;
913
914 spin_lock_irqsave(&p->chip->reg_lock, flags);
915 result = set_codec_parameter(p->chip, 0x80, 0x00);
916 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
917 if (!(result))
918 p->running &= ~SNDRV_SB_CSP_ST_PAUSED;
919
920 return result;
921}
922
923/* ------------------------------ */
924
925/*
926 * QSound mixer control for PCM
927 */
928
929static int snd_sb_qsound_switch_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
930{
931 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
932 uinfo->count = 1;
933 uinfo->value.integer.min = 0;
934 uinfo->value.integer.max = 1;
935 return 0;
936}
937
938static int snd_sb_qsound_switch_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
939{
940 snd_sb_csp_t *p = snd_kcontrol_chip(kcontrol);
941
942 ucontrol->value.integer.value[0] = p->q_enabled ? 1 : 0;
943 return 0;
944}
945
946static int snd_sb_qsound_switch_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
947{
948 snd_sb_csp_t *p = snd_kcontrol_chip(kcontrol);
949 unsigned long flags;
950 int change;
951 unsigned char nval;
952
953 nval = ucontrol->value.integer.value[0] & 0x01;
954 spin_lock_irqsave(&p->q_lock, flags);
955 change = p->q_enabled != nval;
956 p->q_enabled = nval;
957 spin_unlock_irqrestore(&p->q_lock, flags);
958 return change;
959}
960
961static int snd_sb_qsound_space_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
962{
963 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
964 uinfo->count = 2;
965 uinfo->value.integer.min = 0;
966 uinfo->value.integer.max = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
967 return 0;
968}
969
970static int snd_sb_qsound_space_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
971{
972 snd_sb_csp_t *p = snd_kcontrol_chip(kcontrol);
973 unsigned long flags;
974
975 spin_lock_irqsave(&p->q_lock, flags);
976 ucontrol->value.integer.value[0] = p->qpos_left;
977 ucontrol->value.integer.value[1] = p->qpos_right;
978 spin_unlock_irqrestore(&p->q_lock, flags);
979 return 0;
980}
981
982static int snd_sb_qsound_space_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
983{
984 snd_sb_csp_t *p = snd_kcontrol_chip(kcontrol);
985 unsigned long flags;
986 int change;
987 unsigned char nval1, nval2;
988
989 nval1 = ucontrol->value.integer.value[0];
990 if (nval1 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
991 nval1 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
992 nval2 = ucontrol->value.integer.value[1];
993 if (nval2 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
994 nval2 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
995 spin_lock_irqsave(&p->q_lock, flags);
996 change = p->qpos_left != nval1 || p->qpos_right != nval2;
997 p->qpos_left = nval1;
998 p->qpos_right = nval2;
999 p->qpos_changed = change;
1000 spin_unlock_irqrestore(&p->q_lock, flags);
1001 return change;
1002}
1003
1004static snd_kcontrol_new_t snd_sb_qsound_switch = {
1005 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1006 .name = "3D Control - Switch",
1007 .info = snd_sb_qsound_switch_info,
1008 .get = snd_sb_qsound_switch_get,
1009 .put = snd_sb_qsound_switch_put
1010};
1011
1012static snd_kcontrol_new_t snd_sb_qsound_space = {
1013 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1014 .name = "3D Control - Space",
1015 .info = snd_sb_qsound_space_info,
1016 .get = snd_sb_qsound_space_get,
1017 .put = snd_sb_qsound_space_put
1018};
1019
1020static int snd_sb_qsound_build(snd_sb_csp_t * p)
1021{
1022 snd_card_t * card;
1023 int err;
1024
1025 snd_assert(p != NULL, return -EINVAL);
1026
1027 card = p->chip->card;
1028 p->qpos_left = p->qpos_right = SNDRV_SB_CSP_QSOUND_MAX_RIGHT / 2;
1029 p->qpos_changed = 0;
1030
1031 spin_lock_init(&p->q_lock);
1032
1033 if ((err = snd_ctl_add(card, p->qsound_switch = snd_ctl_new1(&snd_sb_qsound_switch, p))) < 0)
1034 goto __error;
1035 if ((err = snd_ctl_add(card, p->qsound_space = snd_ctl_new1(&snd_sb_qsound_space, p))) < 0)
1036 goto __error;
1037
1038 return 0;
1039
1040 __error:
1041 snd_sb_qsound_destroy(p);
1042 return err;
1043}
1044
1045static void snd_sb_qsound_destroy(snd_sb_csp_t * p)
1046{
1047 snd_card_t * card;
1048 unsigned long flags;
1049
1050 snd_assert(p != NULL, return);
1051
1052 card = p->chip->card;
1053
1054 down_write(&card->controls_rwsem);
1055 if (p->qsound_switch)
1056 snd_ctl_remove(card, p->qsound_switch);
1057 if (p->qsound_space)
1058 snd_ctl_remove(card, p->qsound_space);
1059 up_write(&card->controls_rwsem);
1060
1061 /* cancel pending transfer of QSound parameters */
1062 spin_lock_irqsave (&p->q_lock, flags);
1063 p->qpos_changed = 0;
1064 spin_unlock_irqrestore (&p->q_lock, flags);
1065}
1066
1067/*
1068 * Transfer qsound parameters to CSP,
1069 * function should be called from interrupt routine
1070 */
1071static int snd_sb_csp_qsound_transfer(snd_sb_csp_t * p)
1072{
1073 int err = -ENXIO;
1074
1075 spin_lock(&p->q_lock);
1076 if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1077 set_codec_parameter(p->chip, 0xe0, 0x01);
1078 /* left channel */
1079 set_codec_parameter(p->chip, 0x00, p->qpos_left);
1080 set_codec_parameter(p->chip, 0x02, 0x00);
1081 /* right channel */
1082 set_codec_parameter(p->chip, 0x00, p->qpos_right);
1083 set_codec_parameter(p->chip, 0x03, 0x00);
1084 err = 0;
1085 }
1086 p->qpos_changed = 0;
1087 spin_unlock(&p->q_lock);
1088 return err;
1089}
1090
1091/* ------------------------------ */
1092
1093/*
1094 * proc interface
1095 */
1096static int init_proc_entry(snd_sb_csp_t * p, int device)
1097{
1098 char name[16];
1099 snd_info_entry_t *entry;
1100 sprintf(name, "cspD%d", device);
1101 if (! snd_card_proc_new(p->chip->card, name, &entry))
1102 snd_info_set_text_ops(entry, p, 1024, info_read);
1103 return 0;
1104}
1105
1106static void info_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer)
1107{
1108 snd_sb_csp_t *p = entry->private_data;
1109
1110 snd_iprintf(buffer, "Creative Signal Processor [v%d.%d]\n", (p->version >> 4), (p->version & 0x0f));
1111 snd_iprintf(buffer, "State: %cx%c%c%c\n", ((p->running & SNDRV_SB_CSP_ST_QSOUND) ? 'Q' : '-'),
1112 ((p->running & SNDRV_SB_CSP_ST_PAUSED) ? 'P' : '-'),
1113 ((p->running & SNDRV_SB_CSP_ST_RUNNING) ? 'R' : '-'),
1114 ((p->running & SNDRV_SB_CSP_ST_LOADED) ? 'L' : '-'));
1115 if (p->running & SNDRV_SB_CSP_ST_LOADED) {
1116 snd_iprintf(buffer, "Codec: %s [func #%d]\n", p->codec_name, p->func_nr);
1117 snd_iprintf(buffer, "Sample rates: ");
1118 if (p->acc_rates == SNDRV_SB_CSP_RATE_ALL) {
1119 snd_iprintf(buffer, "All\n");
1120 } else {
1121 snd_iprintf(buffer, "%s%s%s%s\n",
1122 ((p->acc_rates & SNDRV_SB_CSP_RATE_8000) ? "8000Hz " : ""),
1123 ((p->acc_rates & SNDRV_SB_CSP_RATE_11025) ? "11025Hz " : ""),
1124 ((p->acc_rates & SNDRV_SB_CSP_RATE_22050) ? "22050Hz " : ""),
1125 ((p->acc_rates & SNDRV_SB_CSP_RATE_44100) ? "44100Hz" : ""));
1126 }
1127 if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
1128 snd_iprintf(buffer, "QSound decoder %sabled\n",
1129 p->q_enabled ? "en" : "dis");
1130 } else {
1131 snd_iprintf(buffer, "PCM format ID: 0x%x (%s/%s) [%s/%s] [%s/%s]\n",
1132 p->acc_format,
1133 ((p->acc_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? "16bit" : "-"),
1134 ((p->acc_width & SNDRV_SB_CSP_SAMPLE_8BIT) ? "8bit" : "-"),
1135 ((p->acc_channels & SNDRV_SB_CSP_MONO) ? "mono" : "-"),
1136 ((p->acc_channels & SNDRV_SB_CSP_STEREO) ? "stereo" : "-"),
1137 ((p->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) ? "playback" : "-"),
1138 ((p->mode & SNDRV_SB_CSP_MODE_DSP_READ) ? "capture" : "-"));
1139 }
1140 }
1141 if (p->running & SNDRV_SB_CSP_ST_AUTO) {
1142 snd_iprintf(buffer, "Autoloaded Mu-Law, A-Law or Ima-ADPCM hardware codec\n");
1143 }
1144 if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
1145 snd_iprintf(buffer, "Processing %dbit %s PCM samples\n",
1146 ((p->run_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? 16 : 8),
1147 ((p->run_channels & SNDRV_SB_CSP_MONO) ? "mono" : "stereo"));
1148 }
1149 if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1150 snd_iprintf(buffer, "Qsound position: left = 0x%x, right = 0x%x\n",
1151 p->qpos_left, p->qpos_right);
1152 }
1153}
1154
1155/* */
1156
1157EXPORT_SYMBOL(snd_sb_csp_new);
1158
1159/*
1160 * INIT part
1161 */
1162
1163static int __init alsa_sb_csp_init(void)
1164{
1165 return 0;
1166}
1167
1168static void __exit alsa_sb_csp_exit(void)
1169{
1170}
1171
1172module_init(alsa_sb_csp_init)
1173module_exit(alsa_sb_csp_exit)
Linux kernel - Deliverables
This page took 0.092973 seconds and 5 git commands to generate.