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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