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1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si>
4  *                        Takashi Iwai <tiwai@suse.de>
5  *
6  *  SB16ASP/AWE32 CSP control
7  *
8  *  CSP microcode loader:
9  *   alsa-tools/sb16_csp/
10  */
11 
12 #include <linux/delay.h>
13 #include <linux/init.h>
14 #include <linux/slab.h>
15 #include <linux/module.h>
16 #include <sound/core.h>
17 #include <sound/control.h>
18 #include <sound/info.h>
19 #include <sound/sb16_csp.h>
20 #include <sound/initval.h>
21 
22 MODULE_AUTHOR("Uros Bizjak <uros@kss-loka.si>");
23 MODULE_DESCRIPTION("ALSA driver for SB16 Creative Signal Processor");
24 MODULE_LICENSE("GPL");
25 MODULE_FIRMWARE("sb16/mulaw_main.csp");
26 MODULE_FIRMWARE("sb16/alaw_main.csp");
27 MODULE_FIRMWARE("sb16/ima_adpcm_init.csp");
28 MODULE_FIRMWARE("sb16/ima_adpcm_playback.csp");
29 MODULE_FIRMWARE("sb16/ima_adpcm_capture.csp");
30 
31 #ifdef SNDRV_LITTLE_ENDIAN
32 #define CSP_HDR_VALUE(a,b,c,d)	((a) | ((b)<<8) | ((c)<<16) | ((d)<<24))
33 #else
34 #define CSP_HDR_VALUE(a,b,c,d)	((d) | ((c)<<8) | ((b)<<16) | ((a)<<24))
35 #endif
36 
37 #define RIFF_HEADER	CSP_HDR_VALUE('R', 'I', 'F', 'F')
38 #define CSP__HEADER	CSP_HDR_VALUE('C', 'S', 'P', ' ')
39 #define LIST_HEADER	CSP_HDR_VALUE('L', 'I', 'S', 'T')
40 #define FUNC_HEADER	CSP_HDR_VALUE('f', 'u', 'n', 'c')
41 #define CODE_HEADER	CSP_HDR_VALUE('c', 'o', 'd', 'e')
42 #define INIT_HEADER	CSP_HDR_VALUE('i', 'n', 'i', 't')
43 #define MAIN_HEADER	CSP_HDR_VALUE('m', 'a', 'i', 'n')
44 
45 /*
46  * RIFF data format
47  */
48 struct riff_header {
49 	__le32 name;
50 	__le32 len;
51 };
52 
53 struct desc_header {
54 	struct riff_header info;
55 	__le16 func_nr;
56 	__le16 VOC_type;
57 	__le16 flags_play_rec;
58 	__le16 flags_16bit_8bit;
59 	__le16 flags_stereo_mono;
60 	__le16 flags_rates;
61 };
62 
63 /*
64  * prototypes
65  */
66 static void snd_sb_csp_free(struct snd_hwdep *hw);
67 static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file);
68 static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg);
69 static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file);
70 
71 static int csp_detect(struct snd_sb *chip, int *version);
72 static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val);
73 static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val);
74 static int read_register(struct snd_sb *chip, unsigned char reg);
75 static int set_mode_register(struct snd_sb *chip, unsigned char mode);
76 static int get_version(struct snd_sb *chip);
77 
78 static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
79 				struct snd_sb_csp_microcode __user * code);
80 static int snd_sb_csp_unload(struct snd_sb_csp * p);
81 static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags);
82 static int snd_sb_csp_autoload(struct snd_sb_csp * p, snd_pcm_format_t pcm_sfmt, int play_rec_mode);
83 static int snd_sb_csp_check_version(struct snd_sb_csp * p);
84 
85 static int snd_sb_csp_use(struct snd_sb_csp * p);
86 static int snd_sb_csp_unuse(struct snd_sb_csp * p);
87 static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels);
88 static int snd_sb_csp_stop(struct snd_sb_csp * p);
89 static int snd_sb_csp_pause(struct snd_sb_csp * p);
90 static int snd_sb_csp_restart(struct snd_sb_csp * p);
91 
92 static int snd_sb_qsound_build(struct snd_sb_csp * p);
93 static void snd_sb_qsound_destroy(struct snd_sb_csp * p);
94 static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p);
95 
96 static int init_proc_entry(struct snd_sb_csp * p, int device);
97 static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer);
98 
99 /*
100  * Detect CSP chip and create a new instance
101  */
snd_sb_csp_new(struct snd_sb * chip,int device,struct snd_hwdep ** rhwdep)102 int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep)
103 {
104 	struct snd_sb_csp *p;
105 	int version;
106 	int err;
107 	struct snd_hwdep *hw;
108 
109 	if (rhwdep)
110 		*rhwdep = NULL;
111 
112 	if (csp_detect(chip, &version))
113 		return -ENODEV;
114 
115 	if ((err = snd_hwdep_new(chip->card, "SB16-CSP", device, &hw)) < 0)
116 		return err;
117 
118 	if ((p = kzalloc(sizeof(*p), GFP_KERNEL)) == NULL) {
119 		snd_device_free(chip->card, hw);
120 		return -ENOMEM;
121 	}
122 	p->chip = chip;
123 	p->version = version;
124 
125 	/* CSP operators */
126 	p->ops.csp_use = snd_sb_csp_use;
127 	p->ops.csp_unuse = snd_sb_csp_unuse;
128 	p->ops.csp_autoload = snd_sb_csp_autoload;
129 	p->ops.csp_start = snd_sb_csp_start;
130 	p->ops.csp_stop = snd_sb_csp_stop;
131 	p->ops.csp_qsound_transfer = snd_sb_csp_qsound_transfer;
132 
133 	mutex_init(&p->access_mutex);
134 	sprintf(hw->name, "CSP v%d.%d", (version >> 4), (version & 0x0f));
135 	hw->iface = SNDRV_HWDEP_IFACE_SB16CSP;
136 	hw->private_data = p;
137 	hw->private_free = snd_sb_csp_free;
138 
139 	/* operators - only write/ioctl */
140 	hw->ops.open = snd_sb_csp_open;
141 	hw->ops.ioctl = snd_sb_csp_ioctl;
142 	hw->ops.release = snd_sb_csp_release;
143 
144 	/* create a proc entry */
145 	init_proc_entry(p, device);
146 	if (rhwdep)
147 		*rhwdep = hw;
148 	return 0;
149 }
150 
151 /*
152  * free_private for hwdep instance
153  */
snd_sb_csp_free(struct snd_hwdep * hwdep)154 static void snd_sb_csp_free(struct snd_hwdep *hwdep)
155 {
156 	int i;
157 	struct snd_sb_csp *p = hwdep->private_data;
158 	if (p) {
159 		if (p->running & SNDRV_SB_CSP_ST_RUNNING)
160 			snd_sb_csp_stop(p);
161 		for (i = 0; i < ARRAY_SIZE(p->csp_programs); ++i)
162 			release_firmware(p->csp_programs[i]);
163 		kfree(p);
164 	}
165 }
166 
167 /* ------------------------------ */
168 
169 /*
170  * open the device exclusively
171  */
snd_sb_csp_open(struct snd_hwdep * hw,struct file * file)172 static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file)
173 {
174 	struct snd_sb_csp *p = hw->private_data;
175 	return (snd_sb_csp_use(p));
176 }
177 
178 /*
179  * ioctl for hwdep device:
180  */
snd_sb_csp_ioctl(struct snd_hwdep * hw,struct file * file,unsigned int cmd,unsigned long arg)181 static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg)
182 {
183 	struct snd_sb_csp *p = hw->private_data;
184 	struct snd_sb_csp_info info;
185 	struct snd_sb_csp_start start_info;
186 	int err;
187 
188 	if (snd_BUG_ON(!p))
189 		return -EINVAL;
190 
191 	if (snd_sb_csp_check_version(p))
192 		return -ENODEV;
193 
194 	switch (cmd) {
195 		/* get information */
196 	case SNDRV_SB_CSP_IOCTL_INFO:
197 		memset(&info, 0, sizeof(info));
198 		*info.codec_name = *p->codec_name;
199 		info.func_nr = p->func_nr;
200 		info.acc_format = p->acc_format;
201 		info.acc_channels = p->acc_channels;
202 		info.acc_width = p->acc_width;
203 		info.acc_rates = p->acc_rates;
204 		info.csp_mode = p->mode;
205 		info.run_channels = p->run_channels;
206 		info.run_width = p->run_width;
207 		info.version = p->version;
208 		info.state = p->running;
209 		if (copy_to_user((void __user *)arg, &info, sizeof(info)))
210 			err = -EFAULT;
211 		else
212 			err = 0;
213 		break;
214 
215 		/* load CSP microcode */
216 	case SNDRV_SB_CSP_IOCTL_LOAD_CODE:
217 		err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
218 		       -EBUSY : snd_sb_csp_riff_load(p, (struct snd_sb_csp_microcode __user *) arg));
219 		break;
220 	case SNDRV_SB_CSP_IOCTL_UNLOAD_CODE:
221 		err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
222 		       -EBUSY : snd_sb_csp_unload(p));
223 		break;
224 
225 		/* change CSP running state */
226 	case SNDRV_SB_CSP_IOCTL_START:
227 		if (copy_from_user(&start_info, (void __user *) arg, sizeof(start_info)))
228 			err = -EFAULT;
229 		else
230 			err = snd_sb_csp_start(p, start_info.sample_width, start_info.channels);
231 		break;
232 	case SNDRV_SB_CSP_IOCTL_STOP:
233 		err = snd_sb_csp_stop(p);
234 		break;
235 	case SNDRV_SB_CSP_IOCTL_PAUSE:
236 		err = snd_sb_csp_pause(p);
237 		break;
238 	case SNDRV_SB_CSP_IOCTL_RESTART:
239 		err = snd_sb_csp_restart(p);
240 		break;
241 	default:
242 		err = -ENOTTY;
243 		break;
244 	}
245 
246 	return err;
247 }
248 
249 /*
250  * close the device
251  */
snd_sb_csp_release(struct snd_hwdep * hw,struct file * file)252 static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file)
253 {
254 	struct snd_sb_csp *p = hw->private_data;
255 	return (snd_sb_csp_unuse(p));
256 }
257 
258 /* ------------------------------ */
259 
260 /*
261  * acquire device
262  */
snd_sb_csp_use(struct snd_sb_csp * p)263 static int snd_sb_csp_use(struct snd_sb_csp * p)
264 {
265 	mutex_lock(&p->access_mutex);
266 	if (p->used) {
267 		mutex_unlock(&p->access_mutex);
268 		return -EAGAIN;
269 	}
270 	p->used++;
271 	mutex_unlock(&p->access_mutex);
272 
273 	return 0;
274 
275 }
276 
277 /*
278  * release device
279  */
snd_sb_csp_unuse(struct snd_sb_csp * p)280 static int snd_sb_csp_unuse(struct snd_sb_csp * p)
281 {
282 	mutex_lock(&p->access_mutex);
283 	p->used--;
284 	mutex_unlock(&p->access_mutex);
285 
286 	return 0;
287 }
288 
289 /*
290  * load microcode via ioctl:
291  * code is user-space pointer
292  */
snd_sb_csp_riff_load(struct snd_sb_csp * p,struct snd_sb_csp_microcode __user * mcode)293 static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
294 				struct snd_sb_csp_microcode __user * mcode)
295 {
296 	struct snd_sb_csp_mc_header info;
297 
298 	unsigned char __user *data_ptr;
299 	unsigned char __user *data_end;
300 	unsigned short func_nr = 0;
301 
302 	struct riff_header file_h, item_h, code_h;
303 	__le32 item_type;
304 	struct desc_header funcdesc_h;
305 
306 	unsigned long flags;
307 	int err;
308 
309 	if (copy_from_user(&info, mcode, sizeof(info)))
310 		return -EFAULT;
311 	data_ptr = mcode->data;
312 
313 	if (copy_from_user(&file_h, data_ptr, sizeof(file_h)))
314 		return -EFAULT;
315 	if ((le32_to_cpu(file_h.name) != RIFF_HEADER) ||
316 	    (le32_to_cpu(file_h.len) >= SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE - sizeof(file_h))) {
317 		snd_printd("%s: Invalid RIFF header\n", __func__);
318 		return -EINVAL;
319 	}
320 	data_ptr += sizeof(file_h);
321 	data_end = data_ptr + le32_to_cpu(file_h.len);
322 
323 	if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
324 		return -EFAULT;
325 	if (le32_to_cpu(item_type) != CSP__HEADER) {
326 		snd_printd("%s: Invalid RIFF file type\n", __func__);
327 		return -EINVAL;
328 	}
329 	data_ptr += sizeof (item_type);
330 
331 	for (; data_ptr < data_end; data_ptr += le32_to_cpu(item_h.len)) {
332 		if (copy_from_user(&item_h, data_ptr, sizeof(item_h)))
333 			return -EFAULT;
334 		data_ptr += sizeof(item_h);
335 		if (le32_to_cpu(item_h.name) != LIST_HEADER)
336 			continue;
337 
338 		if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
339 			 return -EFAULT;
340 		switch (le32_to_cpu(item_type)) {
341 		case FUNC_HEADER:
342 			if (copy_from_user(&funcdesc_h, data_ptr + sizeof(item_type), sizeof(funcdesc_h)))
343 				return -EFAULT;
344 			func_nr = le16_to_cpu(funcdesc_h.func_nr);
345 			break;
346 		case CODE_HEADER:
347 			if (func_nr != info.func_req)
348 				break;	/* not required function, try next */
349 			data_ptr += sizeof(item_type);
350 
351 			/* destroy QSound mixer element */
352 			if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
353 				snd_sb_qsound_destroy(p);
354 			}
355 			/* Clear all flags */
356 			p->running = 0;
357 			p->mode = 0;
358 
359 			/* load microcode blocks */
360 			for (;;) {
361 				if (data_ptr >= data_end)
362 					return -EINVAL;
363 				if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
364 					return -EFAULT;
365 
366 				/* init microcode blocks */
367 				if (le32_to_cpu(code_h.name) != INIT_HEADER)
368 					break;
369 				data_ptr += sizeof(code_h);
370 				err = snd_sb_csp_load_user(p, data_ptr, le32_to_cpu(code_h.len),
371 						      SNDRV_SB_CSP_LOAD_INITBLOCK);
372 				if (err)
373 					return err;
374 				data_ptr += le32_to_cpu(code_h.len);
375 			}
376 			/* main microcode block */
377 			if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
378 				return -EFAULT;
379 
380 			if (le32_to_cpu(code_h.name) != MAIN_HEADER) {
381 				snd_printd("%s: Missing 'main' microcode\n", __func__);
382 				return -EINVAL;
383 			}
384 			data_ptr += sizeof(code_h);
385 			err = snd_sb_csp_load_user(p, data_ptr,
386 						   le32_to_cpu(code_h.len), 0);
387 			if (err)
388 				return err;
389 
390 			/* fill in codec header */
391 			strlcpy(p->codec_name, info.codec_name, sizeof(p->codec_name));
392 			p->func_nr = func_nr;
393 			p->mode = le16_to_cpu(funcdesc_h.flags_play_rec);
394 			switch (le16_to_cpu(funcdesc_h.VOC_type)) {
395 			case 0x0001:	/* QSound decoder */
396 				if (le16_to_cpu(funcdesc_h.flags_play_rec) == SNDRV_SB_CSP_MODE_DSP_WRITE) {
397 					if (snd_sb_qsound_build(p) == 0)
398 						/* set QSound flag and clear all other mode flags */
399 						p->mode = SNDRV_SB_CSP_MODE_QSOUND;
400 				}
401 				p->acc_format = 0;
402 				break;
403 			case 0x0006:	/* A Law codec */
404 				p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
405 				break;
406 			case 0x0007:	/* Mu Law codec */
407 				p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
408 				break;
409 			case 0x0011:	/* what Creative thinks is IMA ADPCM codec */
410 			case 0x0200:	/* Creative ADPCM codec */
411 				p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
412 				break;
413 			case    201:	/* Text 2 Speech decoder */
414 				/* TODO: Text2Speech handling routines */
415 				p->acc_format = 0;
416 				break;
417 			case 0x0202:	/* Fast Speech 8 codec */
418 			case 0x0203:	/* Fast Speech 10 codec */
419 				p->acc_format = SNDRV_PCM_FMTBIT_SPECIAL;
420 				break;
421 			default:	/* other codecs are unsupported */
422 				p->acc_format = p->acc_width = p->acc_rates = 0;
423 				p->mode = 0;
424 				snd_printd("%s: Unsupported CSP codec type: 0x%04x\n",
425 					   __func__,
426 					   le16_to_cpu(funcdesc_h.VOC_type));
427 				return -EINVAL;
428 			}
429 			p->acc_channels = le16_to_cpu(funcdesc_h.flags_stereo_mono);
430 			p->acc_width = le16_to_cpu(funcdesc_h.flags_16bit_8bit);
431 			p->acc_rates = le16_to_cpu(funcdesc_h.flags_rates);
432 
433 			/* Decouple CSP from IRQ and DMAREQ lines */
434 			spin_lock_irqsave(&p->chip->reg_lock, flags);
435 			set_mode_register(p->chip, 0xfc);
436 			set_mode_register(p->chip, 0x00);
437 			spin_unlock_irqrestore(&p->chip->reg_lock, flags);
438 
439 			/* finished loading successfully */
440 			p->running = SNDRV_SB_CSP_ST_LOADED;	/* set LOADED flag */
441 			return 0;
442 		}
443 	}
444 	snd_printd("%s: Function #%d not found\n", __func__, info.func_req);
445 	return -EINVAL;
446 }
447 
448 /*
449  * unload CSP microcode
450  */
snd_sb_csp_unload(struct snd_sb_csp * p)451 static int snd_sb_csp_unload(struct snd_sb_csp * p)
452 {
453 	if (p->running & SNDRV_SB_CSP_ST_RUNNING)
454 		return -EBUSY;
455 	if (!(p->running & SNDRV_SB_CSP_ST_LOADED))
456 		return -ENXIO;
457 
458 	/* clear supported formats */
459 	p->acc_format = 0;
460 	p->acc_channels = p->acc_width = p->acc_rates = 0;
461 	/* destroy QSound mixer element */
462 	if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
463 		snd_sb_qsound_destroy(p);
464 	}
465 	/* clear all flags */
466 	p->running = 0;
467 	p->mode = 0;
468 	return 0;
469 }
470 
471 /*
472  * send command sequence to DSP
473  */
command_seq(struct snd_sb * chip,const unsigned char * seq,int size)474 static inline int command_seq(struct snd_sb *chip, const unsigned char *seq, int size)
475 {
476 	int i;
477 	for (i = 0; i < size; i++) {
478 		if (!snd_sbdsp_command(chip, seq[i]))
479 			return -EIO;
480 	}
481 	return 0;
482 }
483 
484 /*
485  * set CSP codec parameter
486  */
set_codec_parameter(struct snd_sb * chip,unsigned char par,unsigned char val)487 static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val)
488 {
489 	unsigned char dsp_cmd[3];
490 
491 	dsp_cmd[0] = 0x05;	/* CSP set codec parameter */
492 	dsp_cmd[1] = val;	/* Parameter value */
493 	dsp_cmd[2] = par;	/* Parameter */
494 	command_seq(chip, dsp_cmd, 3);
495 	snd_sbdsp_command(chip, 0x03);	/* DSP read? */
496 	if (snd_sbdsp_get_byte(chip) != par)
497 		return -EIO;
498 	return 0;
499 }
500 
501 /*
502  * set CSP register
503  */
set_register(struct snd_sb * chip,unsigned char reg,unsigned char val)504 static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val)
505 {
506 	unsigned char dsp_cmd[3];
507 
508 	dsp_cmd[0] = 0x0e;	/* CSP set register */
509 	dsp_cmd[1] = reg;	/* CSP Register */
510 	dsp_cmd[2] = val;	/* value */
511 	return command_seq(chip, dsp_cmd, 3);
512 }
513 
514 /*
515  * read CSP register
516  * return < 0 -> error
517  */
read_register(struct snd_sb * chip,unsigned char reg)518 static int read_register(struct snd_sb *chip, unsigned char reg)
519 {
520 	unsigned char dsp_cmd[2];
521 
522 	dsp_cmd[0] = 0x0f;	/* CSP read register */
523 	dsp_cmd[1] = reg;	/* CSP Register */
524 	command_seq(chip, dsp_cmd, 2);
525 	return snd_sbdsp_get_byte(chip);	/* Read DSP value */
526 }
527 
528 /*
529  * set CSP mode register
530  */
set_mode_register(struct snd_sb * chip,unsigned char mode)531 static int set_mode_register(struct snd_sb *chip, unsigned char mode)
532 {
533 	unsigned char dsp_cmd[2];
534 
535 	dsp_cmd[0] = 0x04;	/* CSP set mode register */
536 	dsp_cmd[1] = mode;	/* mode */
537 	return command_seq(chip, dsp_cmd, 2);
538 }
539 
540 /*
541  * Detect CSP
542  * return 0 if CSP exists.
543  */
csp_detect(struct snd_sb * chip,int * version)544 static int csp_detect(struct snd_sb *chip, int *version)
545 {
546 	unsigned char csp_test1, csp_test2;
547 	unsigned long flags;
548 	int result = -ENODEV;
549 
550 	spin_lock_irqsave(&chip->reg_lock, flags);
551 
552 	set_codec_parameter(chip, 0x00, 0x00);
553 	set_mode_register(chip, 0xfc);		/* 0xfc = ?? */
554 
555 	csp_test1 = read_register(chip, 0x83);
556 	set_register(chip, 0x83, ~csp_test1);
557 	csp_test2 = read_register(chip, 0x83);
558 	if (csp_test2 != (csp_test1 ^ 0xff))
559 		goto __fail;
560 
561 	set_register(chip, 0x83, csp_test1);
562 	csp_test2 = read_register(chip, 0x83);
563 	if (csp_test2 != csp_test1)
564 		goto __fail;
565 
566 	set_mode_register(chip, 0x00);		/* 0x00 = ? */
567 
568 	*version = get_version(chip);
569 	snd_sbdsp_reset(chip);	/* reset DSP after getversion! */
570 	if (*version >= 0x10 && *version <= 0x1f)
571 		result = 0;		/* valid version id */
572 
573       __fail:
574 	spin_unlock_irqrestore(&chip->reg_lock, flags);
575 	return result;
576 }
577 
578 /*
579  * get CSP version number
580  */
get_version(struct snd_sb * chip)581 static int get_version(struct snd_sb *chip)
582 {
583 	unsigned char dsp_cmd[2];
584 
585 	dsp_cmd[0] = 0x08;	/* SB_DSP_!something! */
586 	dsp_cmd[1] = 0x03;	/* get chip version id? */
587 	command_seq(chip, dsp_cmd, 2);
588 
589 	return (snd_sbdsp_get_byte(chip));
590 }
591 
592 /*
593  * check if the CSP version is valid
594  */
snd_sb_csp_check_version(struct snd_sb_csp * p)595 static int snd_sb_csp_check_version(struct snd_sb_csp * p)
596 {
597 	if (p->version < 0x10 || p->version > 0x1f) {
598 		snd_printd("%s: Invalid CSP version: 0x%x\n", __func__, p->version);
599 		return 1;
600 	}
601 	return 0;
602 }
603 
604 /*
605  * download microcode to CSP (microcode should have one "main" block).
606  */
snd_sb_csp_load(struct snd_sb_csp * p,const unsigned char * buf,int size,int load_flags)607 static int snd_sb_csp_load(struct snd_sb_csp * p, const unsigned char *buf, int size, int load_flags)
608 {
609 	int status, i;
610 	int err;
611 	int result = -EIO;
612 	unsigned long flags;
613 
614 	spin_lock_irqsave(&p->chip->reg_lock, flags);
615 	snd_sbdsp_command(p->chip, 0x01);	/* CSP download command */
616 	if (snd_sbdsp_get_byte(p->chip)) {
617 		snd_printd("%s: Download command failed\n", __func__);
618 		goto __fail;
619 	}
620 	/* Send CSP low byte (size - 1) */
621 	snd_sbdsp_command(p->chip, (unsigned char)(size - 1));
622 	/* Send high byte */
623 	snd_sbdsp_command(p->chip, (unsigned char)((size - 1) >> 8));
624 	/* send microcode sequence */
625 	/* load from kernel space */
626 	while (size--) {
627 		if (!snd_sbdsp_command(p->chip, *buf++))
628 			goto __fail;
629 	}
630 	if (snd_sbdsp_get_byte(p->chip))
631 		goto __fail;
632 
633 	if (load_flags & SNDRV_SB_CSP_LOAD_INITBLOCK) {
634 		i = 0;
635 		/* some codecs (FastSpeech) take some time to initialize */
636 		while (1) {
637 			snd_sbdsp_command(p->chip, 0x03);
638 			status = snd_sbdsp_get_byte(p->chip);
639 			if (status == 0x55 || ++i >= 10)
640 				break;
641 			udelay (10);
642 		}
643 		if (status != 0x55) {
644 			snd_printd("%s: Microcode initialization failed\n", __func__);
645 			goto __fail;
646 		}
647 	} else {
648 		/*
649 		 * Read mixer register SB_DSP4_DMASETUP after loading 'main' code.
650 		 * Start CSP chip if no 16bit DMA channel is set - some kind
651 		 * of autorun or perhaps a bugfix?
652 		 */
653 		spin_lock(&p->chip->mixer_lock);
654 		status = snd_sbmixer_read(p->chip, SB_DSP4_DMASETUP);
655 		spin_unlock(&p->chip->mixer_lock);
656 		if (!(status & (SB_DMASETUP_DMA7 | SB_DMASETUP_DMA6 | SB_DMASETUP_DMA5))) {
657 			err = (set_codec_parameter(p->chip, 0xaa, 0x00) ||
658 			       set_codec_parameter(p->chip, 0xff, 0x00));
659 			snd_sbdsp_reset(p->chip);		/* really! */
660 			if (err)
661 				goto __fail;
662 			set_mode_register(p->chip, 0xc0);	/* c0 = STOP */
663 			set_mode_register(p->chip, 0x70);	/* 70 = RUN */
664 		}
665 	}
666 	result = 0;
667 
668       __fail:
669 	spin_unlock_irqrestore(&p->chip->reg_lock, flags);
670 	return result;
671 }
672 
snd_sb_csp_load_user(struct snd_sb_csp * p,const unsigned char __user * buf,int size,int load_flags)673 static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags)
674 {
675 	int err;
676 	unsigned char *kbuf;
677 
678 	kbuf = memdup_user(buf, size);
679 	if (IS_ERR(kbuf))
680 		return PTR_ERR(kbuf);
681 
682 	err = snd_sb_csp_load(p, kbuf, size, load_flags);
683 
684 	kfree(kbuf);
685 	return err;
686 }
687 
snd_sb_csp_firmware_load(struct snd_sb_csp * p,int index,int flags)688 static int snd_sb_csp_firmware_load(struct snd_sb_csp *p, int index, int flags)
689 {
690 	static const char *const names[] = {
691 		"sb16/mulaw_main.csp",
692 		"sb16/alaw_main.csp",
693 		"sb16/ima_adpcm_init.csp",
694 		"sb16/ima_adpcm_playback.csp",
695 		"sb16/ima_adpcm_capture.csp",
696 	};
697 	const struct firmware *program;
698 
699 	BUILD_BUG_ON(ARRAY_SIZE(names) != CSP_PROGRAM_COUNT);
700 	program = p->csp_programs[index];
701 	if (!program) {
702 		int err = request_firmware(&program, names[index],
703 				       p->chip->card->dev);
704 		if (err < 0)
705 			return err;
706 		p->csp_programs[index] = program;
707 	}
708 	return snd_sb_csp_load(p, program->data, program->size, flags);
709 }
710 
711 /*
712  * autoload hardware codec if necessary
713  * return 0 if CSP is loaded and ready to run (p->running != 0)
714  */
snd_sb_csp_autoload(struct snd_sb_csp * p,snd_pcm_format_t pcm_sfmt,int play_rec_mode)715 static int snd_sb_csp_autoload(struct snd_sb_csp * p, snd_pcm_format_t pcm_sfmt, int play_rec_mode)
716 {
717 	unsigned long flags;
718 	int err = 0;
719 
720 	/* if CSP is running or manually loaded then exit */
721 	if (p->running & (SNDRV_SB_CSP_ST_RUNNING | SNDRV_SB_CSP_ST_LOADED))
722 		return -EBUSY;
723 
724 	/* autoload microcode only if requested hardware codec is not already loaded */
725 	if (((1U << (__force int)pcm_sfmt) & p->acc_format) && (play_rec_mode & p->mode)) {
726 		p->running = SNDRV_SB_CSP_ST_AUTO;
727 	} else {
728 		switch (pcm_sfmt) {
729 		case SNDRV_PCM_FORMAT_MU_LAW:
730 			err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_MULAW, 0);
731 			p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
732 			p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
733 			break;
734 		case SNDRV_PCM_FORMAT_A_LAW:
735 			err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ALAW, 0);
736 			p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
737 			p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
738 			break;
739 		case SNDRV_PCM_FORMAT_IMA_ADPCM:
740 			err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ADPCM_INIT,
741 						       SNDRV_SB_CSP_LOAD_INITBLOCK);
742 			if (err)
743 				break;
744 			if (play_rec_mode == SNDRV_SB_CSP_MODE_DSP_WRITE) {
745 				err = snd_sb_csp_firmware_load
746 					(p, CSP_PROGRAM_ADPCM_PLAYBACK, 0);
747 				p->mode = SNDRV_SB_CSP_MODE_DSP_WRITE;
748 			} else {
749 				err = snd_sb_csp_firmware_load
750 					(p, CSP_PROGRAM_ADPCM_CAPTURE, 0);
751 				p->mode = SNDRV_SB_CSP_MODE_DSP_READ;
752 			}
753 			p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
754 			break;
755 		default:
756 			/* Decouple CSP from IRQ and DMAREQ lines */
757 			if (p->running & SNDRV_SB_CSP_ST_AUTO) {
758 				spin_lock_irqsave(&p->chip->reg_lock, flags);
759 				set_mode_register(p->chip, 0xfc);
760 				set_mode_register(p->chip, 0x00);
761 				spin_unlock_irqrestore(&p->chip->reg_lock, flags);
762 				p->running = 0;			/* clear autoloaded flag */
763 			}
764 			return -EINVAL;
765 		}
766 		if (err) {
767 			p->acc_format = 0;
768 			p->acc_channels = p->acc_width = p->acc_rates = 0;
769 
770 			p->running = 0;				/* clear autoloaded flag */
771 			p->mode = 0;
772 			return (err);
773 		} else {
774 			p->running = SNDRV_SB_CSP_ST_AUTO;	/* set autoloaded flag */
775 			p->acc_width = SNDRV_SB_CSP_SAMPLE_16BIT;	/* only 16 bit data */
776 			p->acc_channels = SNDRV_SB_CSP_MONO | SNDRV_SB_CSP_STEREO;
777 			p->acc_rates = SNDRV_SB_CSP_RATE_ALL;	/* HW codecs accept all rates */
778 		}
779 
780 	}
781 	return (p->running & SNDRV_SB_CSP_ST_AUTO) ? 0 : -ENXIO;
782 }
783 
784 /*
785  * start CSP
786  */
snd_sb_csp_start(struct snd_sb_csp * p,int sample_width,int channels)787 static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels)
788 {
789 	unsigned char s_type;	/* sample type */
790 	unsigned char mixL, mixR;
791 	int result = -EIO;
792 	unsigned long flags;
793 
794 	if (!(p->running & (SNDRV_SB_CSP_ST_LOADED | SNDRV_SB_CSP_ST_AUTO))) {
795 		snd_printd("%s: Microcode not loaded\n", __func__);
796 		return -ENXIO;
797 	}
798 	if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
799 		snd_printd("%s: CSP already running\n", __func__);
800 		return -EBUSY;
801 	}
802 	if (!(sample_width & p->acc_width)) {
803 		snd_printd("%s: Unsupported PCM sample width\n", __func__);
804 		return -EINVAL;
805 	}
806 	if (!(channels & p->acc_channels)) {
807 		snd_printd("%s: Invalid number of channels\n", __func__);
808 		return -EINVAL;
809 	}
810 
811 	/* Mute PCM volume */
812 	spin_lock_irqsave(&p->chip->mixer_lock, flags);
813 	mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
814 	mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
815 	snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
816 	snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
817 	spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
818 
819 	spin_lock(&p->chip->reg_lock);
820 	set_mode_register(p->chip, 0xc0);	/* c0 = STOP */
821 	set_mode_register(p->chip, 0x70);	/* 70 = RUN */
822 
823 	s_type = 0x00;
824 	if (channels == SNDRV_SB_CSP_MONO)
825 		s_type = 0x11;	/* 000n 000n    (n = 1 if mono) */
826 	if (sample_width == SNDRV_SB_CSP_SAMPLE_8BIT)
827 		s_type |= 0x22;	/* 00dX 00dX    (d = 1 if 8 bit samples) */
828 
829 	if (set_codec_parameter(p->chip, 0x81, s_type)) {
830 		snd_printd("%s: Set sample type command failed\n", __func__);
831 		goto __fail;
832 	}
833 	if (set_codec_parameter(p->chip, 0x80, 0x00)) {
834 		snd_printd("%s: Codec start command failed\n", __func__);
835 		goto __fail;
836 	}
837 	p->run_width = sample_width;
838 	p->run_channels = channels;
839 
840 	p->running |= SNDRV_SB_CSP_ST_RUNNING;
841 
842 	if (p->mode & SNDRV_SB_CSP_MODE_QSOUND) {
843 		set_codec_parameter(p->chip, 0xe0, 0x01);
844 		/* enable QSound decoder */
845 		set_codec_parameter(p->chip, 0x00, 0xff);
846 		set_codec_parameter(p->chip, 0x01, 0xff);
847 		p->running |= SNDRV_SB_CSP_ST_QSOUND;
848 		/* set QSound startup value */
849 		snd_sb_csp_qsound_transfer(p);
850 	}
851 	result = 0;
852 
853       __fail:
854 	spin_unlock(&p->chip->reg_lock);
855 
856 	/* restore PCM volume */
857 	spin_lock_irqsave(&p->chip->mixer_lock, flags);
858 	snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
859 	snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
860 	spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
861 
862 	return result;
863 }
864 
865 /*
866  * stop CSP
867  */
snd_sb_csp_stop(struct snd_sb_csp * p)868 static int snd_sb_csp_stop(struct snd_sb_csp * p)
869 {
870 	int result;
871 	unsigned char mixL, mixR;
872 	unsigned long flags;
873 
874 	if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
875 		return 0;
876 
877 	/* Mute PCM volume */
878 	spin_lock_irqsave(&p->chip->mixer_lock, flags);
879 	mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
880 	mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
881 	snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
882 	snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
883 	spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
884 
885 	spin_lock(&p->chip->reg_lock);
886 	if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
887 		set_codec_parameter(p->chip, 0xe0, 0x01);
888 		/* disable QSound decoder */
889 		set_codec_parameter(p->chip, 0x00, 0x00);
890 		set_codec_parameter(p->chip, 0x01, 0x00);
891 
892 		p->running &= ~SNDRV_SB_CSP_ST_QSOUND;
893 	}
894 	result = set_mode_register(p->chip, 0xc0);	/* c0 = STOP */
895 	spin_unlock(&p->chip->reg_lock);
896 
897 	/* restore PCM volume */
898 	spin_lock_irqsave(&p->chip->mixer_lock, flags);
899 	snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
900 	snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
901 	spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
902 
903 	if (!(result))
904 		p->running &= ~(SNDRV_SB_CSP_ST_PAUSED | SNDRV_SB_CSP_ST_RUNNING);
905 	return result;
906 }
907 
908 /*
909  * pause CSP codec and hold DMA transfer
910  */
snd_sb_csp_pause(struct snd_sb_csp * p)911 static int snd_sb_csp_pause(struct snd_sb_csp * p)
912 {
913 	int result;
914 	unsigned long flags;
915 
916 	if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
917 		return -EBUSY;
918 
919 	spin_lock_irqsave(&p->chip->reg_lock, flags);
920 	result = set_codec_parameter(p->chip, 0x80, 0xff);
921 	spin_unlock_irqrestore(&p->chip->reg_lock, flags);
922 	if (!(result))
923 		p->running |= SNDRV_SB_CSP_ST_PAUSED;
924 
925 	return result;
926 }
927 
928 /*
929  * restart CSP codec and resume DMA transfer
930  */
snd_sb_csp_restart(struct snd_sb_csp * p)931 static int snd_sb_csp_restart(struct snd_sb_csp * p)
932 {
933 	int result;
934 	unsigned long flags;
935 
936 	if (!(p->running & SNDRV_SB_CSP_ST_PAUSED))
937 		return -EBUSY;
938 
939 	spin_lock_irqsave(&p->chip->reg_lock, flags);
940 	result = set_codec_parameter(p->chip, 0x80, 0x00);
941 	spin_unlock_irqrestore(&p->chip->reg_lock, flags);
942 	if (!(result))
943 		p->running &= ~SNDRV_SB_CSP_ST_PAUSED;
944 
945 	return result;
946 }
947 
948 /* ------------------------------ */
949 
950 /*
951  * QSound mixer control for PCM
952  */
953 
954 #define snd_sb_qsound_switch_info	snd_ctl_boolean_mono_info
955 
snd_sb_qsound_switch_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)956 static int snd_sb_qsound_switch_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
957 {
958 	struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
959 
960 	ucontrol->value.integer.value[0] = p->q_enabled ? 1 : 0;
961 	return 0;
962 }
963 
snd_sb_qsound_switch_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)964 static int snd_sb_qsound_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
965 {
966 	struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
967 	unsigned long flags;
968 	int change;
969 	unsigned char nval;
970 
971 	nval = ucontrol->value.integer.value[0] & 0x01;
972 	spin_lock_irqsave(&p->q_lock, flags);
973 	change = p->q_enabled != nval;
974 	p->q_enabled = nval;
975 	spin_unlock_irqrestore(&p->q_lock, flags);
976 	return change;
977 }
978 
snd_sb_qsound_space_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)979 static int snd_sb_qsound_space_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
980 {
981 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
982 	uinfo->count = 2;
983 	uinfo->value.integer.min = 0;
984 	uinfo->value.integer.max = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
985 	return 0;
986 }
987 
snd_sb_qsound_space_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)988 static int snd_sb_qsound_space_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
989 {
990 	struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
991 	unsigned long flags;
992 
993 	spin_lock_irqsave(&p->q_lock, flags);
994 	ucontrol->value.integer.value[0] = p->qpos_left;
995 	ucontrol->value.integer.value[1] = p->qpos_right;
996 	spin_unlock_irqrestore(&p->q_lock, flags);
997 	return 0;
998 }
999 
snd_sb_qsound_space_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1000 static int snd_sb_qsound_space_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1001 {
1002 	struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
1003 	unsigned long flags;
1004 	int change;
1005 	unsigned char nval1, nval2;
1006 
1007 	nval1 = ucontrol->value.integer.value[0];
1008 	if (nval1 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
1009 		nval1 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1010 	nval2 = ucontrol->value.integer.value[1];
1011 	if (nval2 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
1012 		nval2 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1013 	spin_lock_irqsave(&p->q_lock, flags);
1014 	change = p->qpos_left != nval1 || p->qpos_right != nval2;
1015 	p->qpos_left = nval1;
1016 	p->qpos_right = nval2;
1017 	p->qpos_changed = change;
1018 	spin_unlock_irqrestore(&p->q_lock, flags);
1019 	return change;
1020 }
1021 
1022 static const struct snd_kcontrol_new snd_sb_qsound_switch = {
1023 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1024 	.name = "3D Control - Switch",
1025 	.info = snd_sb_qsound_switch_info,
1026 	.get = snd_sb_qsound_switch_get,
1027 	.put = snd_sb_qsound_switch_put
1028 };
1029 
1030 static const struct snd_kcontrol_new snd_sb_qsound_space = {
1031 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1032 	.name = "3D Control - Space",
1033 	.info = snd_sb_qsound_space_info,
1034 	.get = snd_sb_qsound_space_get,
1035 	.put = snd_sb_qsound_space_put
1036 };
1037 
snd_sb_qsound_build(struct snd_sb_csp * p)1038 static int snd_sb_qsound_build(struct snd_sb_csp * p)
1039 {
1040 	struct snd_card *card;
1041 	int err;
1042 
1043 	if (snd_BUG_ON(!p))
1044 		return -EINVAL;
1045 
1046 	card = p->chip->card;
1047 	p->qpos_left = p->qpos_right = SNDRV_SB_CSP_QSOUND_MAX_RIGHT / 2;
1048 	p->qpos_changed = 0;
1049 
1050 	spin_lock_init(&p->q_lock);
1051 
1052 	if ((err = snd_ctl_add(card, p->qsound_switch = snd_ctl_new1(&snd_sb_qsound_switch, p))) < 0) {
1053 		p->qsound_switch = NULL;
1054 		goto __error;
1055 	}
1056 	if ((err = snd_ctl_add(card, p->qsound_space = snd_ctl_new1(&snd_sb_qsound_space, p))) < 0) {
1057 		p->qsound_space = NULL;
1058 		goto __error;
1059 	}
1060 
1061 	return 0;
1062 
1063      __error:
1064 	snd_sb_qsound_destroy(p);
1065 	return err;
1066 }
1067 
snd_sb_qsound_destroy(struct snd_sb_csp * p)1068 static void snd_sb_qsound_destroy(struct snd_sb_csp * p)
1069 {
1070 	struct snd_card *card;
1071 	unsigned long flags;
1072 
1073 	if (snd_BUG_ON(!p))
1074 		return;
1075 
1076 	card = p->chip->card;
1077 
1078 	down_write(&card->controls_rwsem);
1079 	if (p->qsound_switch) {
1080 		snd_ctl_remove(card, p->qsound_switch);
1081 		p->qsound_switch = NULL;
1082 	}
1083 	if (p->qsound_space) {
1084 		snd_ctl_remove(card, p->qsound_space);
1085 		p->qsound_space = NULL;
1086 	}
1087 	up_write(&card->controls_rwsem);
1088 
1089 	/* cancel pending transfer of QSound parameters */
1090 	spin_lock_irqsave (&p->q_lock, flags);
1091 	p->qpos_changed = 0;
1092 	spin_unlock_irqrestore (&p->q_lock, flags);
1093 }
1094 
1095 /*
1096  * Transfer qsound parameters to CSP,
1097  * function should be called from interrupt routine
1098  */
snd_sb_csp_qsound_transfer(struct snd_sb_csp * p)1099 static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p)
1100 {
1101 	int err = -ENXIO;
1102 
1103 	spin_lock(&p->q_lock);
1104 	if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1105 		set_codec_parameter(p->chip, 0xe0, 0x01);
1106 		/* left channel */
1107 		set_codec_parameter(p->chip, 0x00, p->qpos_left);
1108 		set_codec_parameter(p->chip, 0x02, 0x00);
1109 		/* right channel */
1110 		set_codec_parameter(p->chip, 0x00, p->qpos_right);
1111 		set_codec_parameter(p->chip, 0x03, 0x00);
1112 		err = 0;
1113 	}
1114 	p->qpos_changed = 0;
1115 	spin_unlock(&p->q_lock);
1116 	return err;
1117 }
1118 
1119 /* ------------------------------ */
1120 
1121 /*
1122  * proc interface
1123  */
init_proc_entry(struct snd_sb_csp * p,int device)1124 static int init_proc_entry(struct snd_sb_csp * p, int device)
1125 {
1126 	char name[16];
1127 
1128 	sprintf(name, "cspD%d", device);
1129 	snd_card_ro_proc_new(p->chip->card, name, p, info_read);
1130 	return 0;
1131 }
1132 
info_read(struct snd_info_entry * entry,struct snd_info_buffer * buffer)1133 static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1134 {
1135 	struct snd_sb_csp *p = entry->private_data;
1136 
1137 	snd_iprintf(buffer, "Creative Signal Processor [v%d.%d]\n", (p->version >> 4), (p->version & 0x0f));
1138 	snd_iprintf(buffer, "State: %cx%c%c%c\n", ((p->running & SNDRV_SB_CSP_ST_QSOUND) ? 'Q' : '-'),
1139 		    ((p->running & SNDRV_SB_CSP_ST_PAUSED) ? 'P' : '-'),
1140 		    ((p->running & SNDRV_SB_CSP_ST_RUNNING) ? 'R' : '-'),
1141 		    ((p->running & SNDRV_SB_CSP_ST_LOADED) ? 'L' : '-'));
1142 	if (p->running & SNDRV_SB_CSP_ST_LOADED) {
1143 		snd_iprintf(buffer, "Codec: %s [func #%d]\n", p->codec_name, p->func_nr);
1144 		snd_iprintf(buffer, "Sample rates: ");
1145 		if (p->acc_rates == SNDRV_SB_CSP_RATE_ALL) {
1146 			snd_iprintf(buffer, "All\n");
1147 		} else {
1148 			snd_iprintf(buffer, "%s%s%s%s\n",
1149 				    ((p->acc_rates & SNDRV_SB_CSP_RATE_8000) ? "8000Hz " : ""),
1150 				    ((p->acc_rates & SNDRV_SB_CSP_RATE_11025) ? "11025Hz " : ""),
1151 				    ((p->acc_rates & SNDRV_SB_CSP_RATE_22050) ? "22050Hz " : ""),
1152 				    ((p->acc_rates & SNDRV_SB_CSP_RATE_44100) ? "44100Hz" : ""));
1153 		}
1154 		if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
1155 			snd_iprintf(buffer, "QSound decoder %sabled\n",
1156 				    p->q_enabled ? "en" : "dis");
1157 		} else {
1158 			snd_iprintf(buffer, "PCM format ID: 0x%x (%s/%s) [%s/%s] [%s/%s]\n",
1159 				    p->acc_format,
1160 				    ((p->acc_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? "16bit" : "-"),
1161 				    ((p->acc_width & SNDRV_SB_CSP_SAMPLE_8BIT) ? "8bit" : "-"),
1162 				    ((p->acc_channels & SNDRV_SB_CSP_MONO) ? "mono" : "-"),
1163 				    ((p->acc_channels & SNDRV_SB_CSP_STEREO) ? "stereo" : "-"),
1164 				    ((p->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) ? "playback" : "-"),
1165 				    ((p->mode & SNDRV_SB_CSP_MODE_DSP_READ) ? "capture" : "-"));
1166 		}
1167 	}
1168 	if (p->running & SNDRV_SB_CSP_ST_AUTO) {
1169 		snd_iprintf(buffer, "Autoloaded Mu-Law, A-Law or Ima-ADPCM hardware codec\n");
1170 	}
1171 	if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
1172 		snd_iprintf(buffer, "Processing %dbit %s PCM samples\n",
1173 			    ((p->run_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? 16 : 8),
1174 			    ((p->run_channels & SNDRV_SB_CSP_MONO) ? "mono" : "stereo"));
1175 	}
1176 	if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1177 		snd_iprintf(buffer, "Qsound position: left = 0x%x, right = 0x%x\n",
1178 			    p->qpos_left, p->qpos_right);
1179 	}
1180 }
1181 
1182 /* */
1183 
1184 EXPORT_SYMBOL(snd_sb_csp_new);
1185