?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
hilkbd: Kill compiler warning and fix comment dyslexia
[wrt350n-kernel.git] / sound / oss / ad1816.c
blobcaabf31193f7d3fd8d29f6dd6685cc672154d7c7
1 /*
2 *
3 * AD1816 lowlevel sound driver for Linux 2.6.0 and above
4 *
5 * Copyright (C) 1998-2003 by Thorsten Knabe <linux@thorsten-knabe.de>
6 *
7 * Based on the CS4232/AD1848 driver Copyright (C) by Hannu Savolainen 1993-1996
8 *
9 *
10 * version: 1.5
11 * status: beta
12 * date: 2003/07/15
13 *
14 * Changes:
15 * Oleg Drokin: Some cleanup of load/unload functions. 1998/11/24
16 *
17 * Thorsten Knabe: attach and unload rewritten,
18 * some argument checks added 1998/11/30
19 *
20 * Thorsten Knabe: Buggy isa bridge workaround added 1999/01/16
21 *
22 * David Moews/Thorsten Knabe: Introduced options
23 * parameter. Added slightly modified patch from
24 * David Moews to disable dsp audio sources by setting
25 * bit 0 of options parameter. This seems to be
26 * required by some Aztech/Newcom SC-16 cards. 1999/04/18
27 *
28 * Christoph Hellwig: Adapted to module_init/module_exit. 2000/03/03
29 *
30 * Christoph Hellwig: Added isapnp support 2000/03/15
31 *
32 * Arnaldo Carvalho de Melo: get rid of check_region 2001/10/07
33 *
34 * Thorsten Knabe: Compiling with CONFIG_PNP enabled
35 * works again. It is now possible to use more than one
36 * AD1816 sound card. Sample rate now may be changed during
37 * playback/capture. printk() uses log levels everywhere.
38 * SMP fixes. DMA handling fixes.
39 * Other minor code cleanup. 2003/07/15
40 *
41 */
42
43
44 #include <linux/module.h>
45 #include <linux/init.h>
46 #include <linux/interrupt.h>
47 #include <linux/isapnp.h>
48 #include <linux/stddef.h>
49 #include <linux/spinlock.h>
50 #include "sound_config.h"
51
52 #define DEBUGNOISE(x)
53
54 #define CHECK_FOR_POWER { int timeout=100; \
55 while (timeout > 0 && (inb(devc->base)&0x80)!= 0x80) {\
56 timeout--; \
57 } \
58 if (timeout==0) {\
59 printk(KERN_WARNING "ad1816: Check for power failed in %s line: %d\n",__FILE__,__LINE__); \
60 } \
61 }
62
63 /* structure to hold device specific information */
64 typedef struct
65 {
66 int base; /* set in attach */
67 int irq;
68 int dma_playback;
69 int dma_capture;
70
71 int opened; /* open */
72 int speed;
73 int channels;
74 int audio_format;
75 int audio_mode;
76
77 int recmask; /* setup */
78 unsigned char format_bits;
79 int supported_devices;
80 int supported_rec_devices;
81 unsigned short levels[SOUND_MIXER_NRDEVICES];
82 /* misc */
83 struct pnp_dev *pnpdev; /* configured via pnp */
84 int dev_no; /* this is the # in audio_devs and NOT
85 in ad1816_info */
86 spinlock_t lock;
87 } ad1816_info;
88
89 static int nr_ad1816_devs;
90 static int ad1816_clockfreq = 33000;
91 static int options;
92
93 /* supported audio formats */
94 static int ad_format_mask =
95 AFMT_U8 | AFMT_S16_LE | AFMT_S16_BE | AFMT_MU_LAW | AFMT_A_LAW;
96
97 /* array of device info structures */
98 static ad1816_info dev_info[MAX_AUDIO_DEV];
99
100
101 /* ------------------------------------------------------------------- */
102
103 /* functions for easier access to inderect registers */
104
105 static int ad_read (ad1816_info * devc, int reg)
106 {
107 int result;
108
109 CHECK_FOR_POWER;
110 outb ((unsigned char) (reg & 0x3f), devc->base+0);
111 result = inb(devc->base+2);
112 result+= inb(devc->base+3)<<8;
113 return (result);
114 }
115
116
117 static void ad_write (ad1816_info * devc, int reg, int data)
118 {
119 CHECK_FOR_POWER;
120 outb ((unsigned char) (reg & 0xff), devc->base+0);
121 outb ((unsigned char) (data & 0xff),devc->base+2);
122 outb ((unsigned char) ((data>>8)&0xff),devc->base+3);
123 }
124
125 /* ------------------------------------------------------------------- */
126
127 /* function interface required by struct audio_driver */
128
129 static void ad1816_halt_input (int dev)
130 {
131 unsigned long flags;
132 ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
133 unsigned char buffer;
134
135 DEBUGNOISE(printk(KERN_DEBUG "ad1816: halt_input called\n"));
136
137 spin_lock_irqsave(&devc->lock,flags);
138
139 if(!isa_dma_bridge_buggy) {
140 disable_dma(audio_devs[dev]->dmap_in->dma);
141 }
142
143 buffer=inb(devc->base+9);
144 if (buffer & 0x01) {
145 /* disable capture */
146 outb(buffer & ~0x01,devc->base+9);
147 }
148
149 if(!isa_dma_bridge_buggy) {
150 enable_dma(audio_devs[dev]->dmap_in->dma);
151 }
152
153 /* Clear interrupt status */
154 outb (~0x40, devc->base+1);
155
156 devc->audio_mode &= ~PCM_ENABLE_INPUT;
157 spin_unlock_irqrestore(&devc->lock,flags);
158 }
159
160 static void ad1816_halt_output (int dev)
161 {
162 unsigned long flags;
163 ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
164
165 unsigned char buffer;
166
167 DEBUGNOISE(printk(KERN_DEBUG "ad1816: halt_output called!\n"));
168
169 spin_lock_irqsave(&devc->lock,flags);
170 /* Mute pcm output */
171 ad_write(devc, 4, ad_read(devc,4)|0x8080);
172
173 if(!isa_dma_bridge_buggy) {
174 disable_dma(audio_devs[dev]->dmap_out->dma);
175 }
176
177 buffer=inb(devc->base+8);
178 if (buffer & 0x01) {
179 /* disable capture */
180 outb(buffer & ~0x01,devc->base+8);
181 }
182
183 if(!isa_dma_bridge_buggy) {
184 enable_dma(audio_devs[dev]->dmap_out->dma);
185 }
186
187 /* Clear interrupt status */
188 outb ((unsigned char)~0x80, devc->base+1);
189
190 devc->audio_mode &= ~PCM_ENABLE_OUTPUT;
191 spin_unlock_irqrestore(&devc->lock,flags);
192 }
193
194 static void ad1816_output_block (int dev, unsigned long buf,
195 int count, int intrflag)
196 {
197 unsigned long flags;
198 unsigned long cnt;
199 ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
200
201 DEBUGNOISE(printk(KERN_DEBUG "ad1816: output_block called buf=%ld count=%d flags=%d\n",buf,count,intrflag));
202
203 cnt = count/4 - 1;
204
205 spin_lock_irqsave(&devc->lock,flags);
206
207 /* set transfer count */
208 ad_write (devc, 8, cnt & 0xffff);
209
210 devc->audio_mode |= PCM_ENABLE_OUTPUT;
211 spin_unlock_irqrestore(&devc->lock,flags);
212 }
213
214
215 static void ad1816_start_input (int dev, unsigned long buf, int count,
216 int intrflag)
217 {
218 unsigned long flags;
219 unsigned long cnt;
220 ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
221
222 DEBUGNOISE(printk(KERN_DEBUG "ad1816: start_input called buf=%ld count=%d flags=%d\n",buf,count,intrflag));
223
224 cnt = count/4 - 1;
225
226 spin_lock_irqsave(&devc->lock,flags);
227
228 /* set transfer count */
229 ad_write (devc, 10, cnt & 0xffff);
230 devc->audio_mode |= PCM_ENABLE_INPUT;
231 spin_unlock_irqrestore(&devc->lock,flags);
232 }
233
234 static int ad1816_prepare_for_input (int dev, int bsize, int bcount)
235 {
236 unsigned long flags;
237 unsigned int freq;
238 ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
239 unsigned char fmt_bits;
240
241 DEBUGNOISE(printk(KERN_DEBUG "ad1816: prepare_for_input called: bsize=%d bcount=%d\n",bsize,bcount));
242
243 spin_lock_irqsave(&devc->lock,flags);
244 fmt_bits= (devc->format_bits&0x7)<<3;
245
246 /* set mono/stereo mode */
247 if (devc->channels > 1) {
248 fmt_bits |=0x4;
249 }
250 /* set Mono/Stereo in playback/capture register */
251 outb( (inb(devc->base+8) & ~0x3C)|fmt_bits, devc->base+8);
252 outb( (inb(devc->base+9) & ~0x3C)|fmt_bits, devc->base+9);
253
254 freq=((unsigned int)devc->speed*33000)/ad1816_clockfreq;
255
256 /* write playback/capture speeds */
257 ad_write (devc, 2, freq & 0xffff);
258 ad_write (devc, 3, freq & 0xffff);
259
260 spin_unlock_irqrestore(&devc->lock,flags);
261
262 ad1816_halt_input(dev);
263 return 0;
264 }
265
266 static int ad1816_prepare_for_output (int dev, int bsize, int bcount)
267 {
268 unsigned long flags;
269 unsigned int freq;
270 ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
271 unsigned char fmt_bits;
272
273 DEBUGNOISE(printk(KERN_DEBUG "ad1816: prepare_for_output called: bsize=%d bcount=%d\n",bsize,bcount));
274
275 spin_lock_irqsave(&devc->lock,flags);
276
277 fmt_bits= (devc->format_bits&0x7)<<3;
278 /* set mono/stereo mode */
279 if (devc->channels > 1) {
280 fmt_bits |=0x4;
281 }
282
283 /* write format bits to playback/capture registers */
284 outb( (inb(devc->base+8) & ~0x3C)|fmt_bits, devc->base+8);
285 outb( (inb(devc->base+9) & ~0x3C)|fmt_bits, devc->base+9);
286
287 freq=((unsigned int)devc->speed*33000)/ad1816_clockfreq;
288
289 /* write playback/capture speeds */
290 ad_write (devc, 2, freq & 0xffff);
291 ad_write (devc, 3, freq & 0xffff);
292
293 spin_unlock_irqrestore(&devc->lock,flags);
294
295 ad1816_halt_output(dev);
296 return 0;
297
298 }
299
300 static void ad1816_trigger (int dev, int state)
301 {
302 unsigned long flags;
303 ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
304
305 DEBUGNOISE(printk(KERN_DEBUG "ad1816: trigger called! (devc=%d,devc->base=%d\n", devc, devc->base));
306
307 /* mode may have changed */
308
309 spin_lock_irqsave(&devc->lock,flags);
310
311 /* mask out modes not specified on open call */
312 state &= devc->audio_mode;
313
314 /* setup soundchip to new io-mode */
315 if (state & PCM_ENABLE_INPUT) {
316 /* enable capture */
317 outb(inb(devc->base+9)|0x01, devc->base+9);
318 } else {
319 /* disable capture */
320 outb(inb(devc->base+9)&~0x01, devc->base+9);
321 }
322
323 if (state & PCM_ENABLE_OUTPUT) {
324 /* enable playback */
325 outb(inb(devc->base+8)|0x01, devc->base+8);
326 /* unmute pcm output */
327 ad_write(devc, 4, ad_read(devc,4)&~0x8080);
328 } else {
329 /* mute pcm output */
330 ad_write(devc, 4, ad_read(devc,4)|0x8080);
331 /* disable capture */
332 outb(inb(devc->base+8)&~0x01, devc->base+8);
333 }
334 spin_unlock_irqrestore(&devc->lock,flags);
335 }
336
337
338 /* halt input & output */
339 static void ad1816_halt (int dev)
340 {
341 ad1816_halt_input(dev);
342 ad1816_halt_output(dev);
343 }
344
345 static void ad1816_reset (int dev)
346 {
347 ad1816_halt (dev);
348 }
349
350 /* set playback speed */
351 static int ad1816_set_speed (int dev, int arg)
352 {
353 unsigned long flags;
354 unsigned int freq;
355 int ret;
356
357 ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
358
359 spin_lock_irqsave(&devc->lock, flags);
360 if (arg == 0) {
361 ret = devc->speed;
362 spin_unlock_irqrestore(&devc->lock, flags);
363 return ret;
364 }
365 /* range checking */
366 if (arg < 4000) {
367 arg = 4000;
368 }
369 if (arg > 55000) {
370 arg = 55000;
371 }
372 devc->speed = arg;
373
374 /* change speed during playback */
375 freq=((unsigned int)devc->speed*33000)/ad1816_clockfreq;
376 /* write playback/capture speeds */
377 ad_write (devc, 2, freq & 0xffff);
378 ad_write (devc, 3, freq & 0xffff);
379
380 ret = devc->speed;
381 spin_unlock_irqrestore(&devc->lock, flags);
382 return ret;
383
384 }
385
386 static unsigned int ad1816_set_bits (int dev, unsigned int arg)
387 {
388 unsigned long flags;
389 ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
390
391 static struct format_tbl {
392 int format;
393 unsigned char bits;
394 } format2bits[] = {
395 { 0, 0 },
396 { AFMT_MU_LAW, 1 },
397 { AFMT_A_LAW, 3 },
398 { AFMT_IMA_ADPCM, 0 },
399 { AFMT_U8, 0 },
400 { AFMT_S16_LE, 2 },
401 { AFMT_S16_BE, 6 },
402 { AFMT_S8, 0 },
403 { AFMT_U16_LE, 0 },
404 { AFMT_U16_BE, 0 }
405 };
406
407 int i, n = sizeof (format2bits) / sizeof (struct format_tbl);
408
409 spin_lock_irqsave(&devc->lock, flags);
410 /* return current format */
411 if (arg == 0) {
412 arg = devc->audio_format;
413 spin_unlock_irqrestore(&devc->lock, flags);
414 return arg;
415 }
416 devc->audio_format = arg;
417
418 /* search matching format bits */
419 for (i = 0; i < n; i++)
420 if (format2bits[i].format == arg) {
421 devc->format_bits = format2bits[i].bits;
422 devc->audio_format = arg;
423 spin_unlock_irqrestore(&devc->lock, flags);
424 return arg;
425 }
426
427 /* Still hanging here. Something must be terribly wrong */
428 devc->format_bits = 0;
429 devc->audio_format = AFMT_U8;
430 spin_unlock_irqrestore(&devc->lock, flags);
431 return(AFMT_U8);
432 }
433
434 static short ad1816_set_channels (int dev, short arg)
435 {
436 ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
437
438 if (arg != 1 && arg != 2)
439 return devc->channels;
440
441 devc->channels = arg;
442 return arg;
443 }
444
445 /* open device */
446 static int ad1816_open (int dev, int mode)
447 {
448 ad1816_info *devc = NULL;
449 unsigned long flags;
450
451 /* is device number valid ? */
452 if (dev < 0 || dev >= num_audiodevs)
453 return -(ENXIO);
454
455 /* get device info of this dev */
456 devc = (ad1816_info *) audio_devs[dev]->devc;
457
458 /* make check if device already open atomic */
459 spin_lock_irqsave(&devc->lock,flags);
460
461 if (devc->opened) {
462 spin_unlock_irqrestore(&devc->lock,flags);
463 return -(EBUSY);
464 }
465
466 /* mark device as open */
467 devc->opened = 1;
468
469 devc->audio_mode = 0;
470 devc->speed = 8000;
471 devc->audio_format=AFMT_U8;
472 devc->channels=1;
473 spin_unlock_irqrestore(&devc->lock,flags);
474 ad1816_reset(devc->dev_no); /* halt all pending output */
475 return 0;
476 }
477
478 static void ad1816_close (int dev) /* close device */
479 {
480 unsigned long flags;
481 ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
482
483 /* halt all pending output */
484 ad1816_reset(devc->dev_no);
485
486 spin_lock_irqsave(&devc->lock,flags);
487 devc->opened = 0;
488 devc->audio_mode = 0;
489 devc->speed = 8000;
490 devc->audio_format=AFMT_U8;
491 devc->format_bits = 0;
492 spin_unlock_irqrestore(&devc->lock,flags);
493 }
494
495
496 /* ------------------------------------------------------------------- */
497
498 /* Audio driver structure */
499
500 static struct audio_driver ad1816_audio_driver =
501 {
502 .owner = THIS_MODULE,
503 .open = ad1816_open,
504 .close = ad1816_close,
505 .output_block = ad1816_output_block,
506 .start_input = ad1816_start_input,
507 .prepare_for_input = ad1816_prepare_for_input,
508 .prepare_for_output = ad1816_prepare_for_output,
509 .halt_io = ad1816_halt,
510 .halt_input = ad1816_halt_input,
511 .halt_output = ad1816_halt_output,
512 .trigger = ad1816_trigger,
513 .set_speed = ad1816_set_speed,
514 .set_bits = ad1816_set_bits,
515 .set_channels = ad1816_set_channels,
516 };
517
518
519 /* ------------------------------------------------------------------- */
520
521 /* Interrupt handler */
522
523
524 static irqreturn_t ad1816_interrupt (int irq, void *dev_id)
525 {
526 unsigned char status;
527 ad1816_info *devc = (ad1816_info *)dev_id;
528
529 if (irq < 0 || irq > 15) {
530 printk(KERN_WARNING "ad1816: Got bogus interrupt %d\n", irq);
531 return IRQ_NONE;
532 }
533
534 spin_lock(&devc->lock);
535
536 /* read interrupt register */
537 status = inb (devc->base+1);
538 /* Clear all interrupt */
539 outb (~status, devc->base+1);
540
541 DEBUGNOISE(printk(KERN_DEBUG "ad1816: Got interrupt subclass %d\n",status));
542
543 if (status == 0) {
544 DEBUGNOISE(printk(KERN_DEBUG "ad1816: interrupt: Got interrupt, but no source.\n"));
545 spin_unlock(&devc->lock);
546 return IRQ_NONE;
547 }
548
549 if (devc->opened && (devc->audio_mode & PCM_ENABLE_INPUT) && (status&64))
550 DMAbuf_inputintr (devc->dev_no);
551
552 if (devc->opened && (devc->audio_mode & PCM_ENABLE_OUTPUT) && (status & 128))
553 DMAbuf_outputintr (devc->dev_no, 1);
554
555 spin_unlock(&devc->lock);
556 return IRQ_HANDLED;
557 }
558
559 /* ------------------------------------------------------------------- */
560
561 /* Mixer stuff */
562
563 struct mixer_def {
564 unsigned int regno: 7;
565 unsigned int polarity:1; /* 0=normal, 1=reversed */
566 unsigned int bitpos:4;
567 unsigned int nbits:4;
568 };
569
570 static char mix_cvt[101] = {
571 0, 0, 3, 7,10,13,16,19,21,23,26,28,30,32,34,35,37,39,40,42,
572 43,45,46,47,49,50,51,52,53,55,56,57,58,59,60,61,62,63,64,65,
573 65,66,67,68,69,70,70,71,72,73,73,74,75,75,76,77,77,78,79,79,
574 80,81,81,82,82,83,84,84,85,85,86,86,87,87,88,88,89,89,90,90,
575 91,91,92,92,93,93,94,94,95,95,96,96,96,97,97,98,98,98,99,99,
576 100
577 };
578
579 typedef struct mixer_def mixer_ent;
580
581 /*
582 * Most of the mixer entries work in backwards. Setting the polarity field
583 * makes them to work correctly.
584 *
585 * The channel numbering used by individual soundcards is not fixed. Some
586 * cards have assigned different meanings for the AUX1, AUX2 and LINE inputs.
587 * The current version doesn't try to compensate this.
588 */
589
590 #define MIX_ENT(name, reg_l, pola_l, pos_l, len_l, reg_r, pola_r, pos_r, len_r) \
591 {{reg_l, pola_l, pos_l, len_l}, {reg_r, pola_r, pos_r, len_r}}
592
593
594 static mixer_ent mix_devices[SOUND_MIXER_NRDEVICES][2] = {
595 MIX_ENT(SOUND_MIXER_VOLUME, 14, 1, 8, 5, 14, 1, 0, 5),
596 MIX_ENT(SOUND_MIXER_BASS, 0, 0, 0, 0, 0, 0, 0, 0),
597 MIX_ENT(SOUND_MIXER_TREBLE, 0, 0, 0, 0, 0, 0, 0, 0),
598 MIX_ENT(SOUND_MIXER_SYNTH, 5, 1, 8, 6, 5, 1, 0, 6),
599 MIX_ENT(SOUND_MIXER_PCM, 4, 1, 8, 6, 4, 1, 0, 6),
600 MIX_ENT(SOUND_MIXER_SPEAKER, 0, 0, 0, 0, 0, 0, 0, 0),
601 MIX_ENT(SOUND_MIXER_LINE, 18, 1, 8, 5, 18, 1, 0, 5),
602 MIX_ENT(SOUND_MIXER_MIC, 19, 1, 8, 5, 19, 1, 0, 5),
603 MIX_ENT(SOUND_MIXER_CD, 15, 1, 8, 5, 15, 1, 0, 5),
604 MIX_ENT(SOUND_MIXER_IMIX, 0, 0, 0, 0, 0, 0, 0, 0),
605 MIX_ENT(SOUND_MIXER_ALTPCM, 0, 0, 0, 0, 0, 0, 0, 0),
606 MIX_ENT(SOUND_MIXER_RECLEV, 20, 0, 8, 4, 20, 0, 0, 4),
607 MIX_ENT(SOUND_MIXER_IGAIN, 0, 0, 0, 0, 0, 0, 0, 0),
608 MIX_ENT(SOUND_MIXER_OGAIN, 0, 0, 0, 0, 0, 0, 0, 0),
609 MIX_ENT(SOUND_MIXER_LINE1, 17, 1, 8, 5, 17, 1, 0, 5),
610 MIX_ENT(SOUND_MIXER_LINE2, 16, 1, 8, 5, 16, 1, 0, 5),
611 MIX_ENT(SOUND_MIXER_LINE3, 39, 0, 9, 4, 39, 1, 0, 5)
612 };
613
614
615 static unsigned short default_mixer_levels[SOUND_MIXER_NRDEVICES] =
616 {
617 0x4343, /* Master Volume */
618 0x3232, /* Bass */
619 0x3232, /* Treble */
620 0x0000, /* FM */
621 0x4343, /* PCM */
622 0x0000, /* PC Speaker */
623 0x0000, /* Ext Line */
624 0x0000, /* Mic */
625 0x0000, /* CD */
626 0x0000, /* Recording monitor */
627 0x0000, /* SB PCM */
628 0x0000, /* Recording level */
629 0x0000, /* Input gain */
630 0x0000, /* Output gain */
631 0x0000, /* Line1 */
632 0x0000, /* Line2 */
633 0x0000 /* Line3 (usually line in)*/
634 };
635
636 #define LEFT_CHN 0
637 #define RIGHT_CHN 1
638
639
640
641 static int
642 ad1816_set_recmask (ad1816_info * devc, int mask)
643 {
644 unsigned long flags;
645 unsigned char recdev;
646 int i, n;
647
648 spin_lock_irqsave(&devc->lock, flags);
649 mask &= devc->supported_rec_devices;
650
651 n = 0;
652 /* Count selected device bits */
653 for (i = 0; i < 32; i++)
654 if (mask & (1 << i))
655 n++;
656
657 if (n == 0)
658 mask = SOUND_MASK_MIC;
659 else if (n != 1) { /* Too many devices selected */
660 /* Filter out active settings */
661 mask &= ~devc->recmask;
662
663 n = 0;
664 /* Count selected device bits */
665 for (i = 0; i < 32; i++)
666 if (mask & (1 << i))
667 n++;
668
669 if (n != 1)
670 mask = SOUND_MASK_MIC;
671 }
672
673 switch (mask) {
674 case SOUND_MASK_MIC:
675 recdev = 5;
676 break;
677
678 case SOUND_MASK_LINE:
679 recdev = 0;
680 break;
681
682 case SOUND_MASK_CD:
683 recdev = 2;
684 break;
685
686 case SOUND_MASK_LINE1:
687 recdev = 4;
688 break;
689
690 case SOUND_MASK_LINE2:
691 recdev = 3;
692 break;
693
694 case SOUND_MASK_VOLUME:
695 recdev = 1;
696 break;
697
698 default:
699 mask = SOUND_MASK_MIC;
700 recdev = 5;
701 }
702
703 recdev <<= 4;
704 ad_write (devc, 20,
705 (ad_read (devc, 20) & 0x8f8f) | recdev | (recdev<<8));
706
707 devc->recmask = mask;
708 spin_unlock_irqrestore(&devc->lock, flags);
709 return mask;
710 }
711
712 static void
713 change_bits (int *regval, int dev, int chn, int newval)
714 {
715 unsigned char mask;
716 int shift;
717
718 /* Reverse polarity*/
719
720 if (mix_devices[dev][chn].polarity == 1)
721 newval = 100 - newval;
722
723 mask = (1 << mix_devices[dev][chn].nbits) - 1;
724 shift = mix_devices[dev][chn].bitpos;
725 /* Scale it */
726 newval = (int) ((newval * mask) + 50) / 100;
727 /* Clear bits */
728 *regval &= ~(mask << shift);
729 /* Set new value */
730 *regval |= (newval & mask) << shift;
731 }
732
733 static int
734 ad1816_mixer_get (ad1816_info * devc, int dev)
735 {
736 DEBUGNOISE(printk(KERN_DEBUG "ad1816: mixer_get called!\n"));
737
738 /* range check + supported mixer check */
739 if (dev < 0 || dev >= SOUND_MIXER_NRDEVICES )
740 return (-(EINVAL));
741 if (!((1 << dev) & devc->supported_devices))
742 return -(EINVAL);
743
744 return devc->levels[dev];
745 }
746
747 static int
748 ad1816_mixer_set (ad1816_info * devc, int dev, int value)
749 {
750 int left = value & 0x000000ff;
751 int right = (value & 0x0000ff00) >> 8;
752 int retvol;
753
754 int regoffs;
755 int val;
756 int valmute;
757 unsigned long flags;
758
759 DEBUGNOISE(printk(KERN_DEBUG "ad1816: mixer_set called!\n"));
760
761 if (dev < 0 || dev >= SOUND_MIXER_NRDEVICES )
762 return -(EINVAL);
763
764 if (left > 100)
765 left = 100;
766 if (left < 0)
767 left = 0;
768 if (right > 100)
769 right = 100;
770 if (right < 0)
771 right = 0;
772
773 /* Mono control */
774 if (mix_devices[dev][RIGHT_CHN].nbits == 0)
775 right = left;
776 retvol = left | (right << 8);
777
778 /* Scale it */
779
780 left = mix_cvt[left];
781 right = mix_cvt[right];
782
783 /* reject all mixers that are not supported */
784 if (!(devc->supported_devices & (1 << dev)))
785 return -(EINVAL);
786
787 /* sanity check */
788 if (mix_devices[dev][LEFT_CHN].nbits == 0)
789 return -(EINVAL);
790 spin_lock_irqsave(&devc->lock, flags);
791
792 /* keep precise volume internal */
793 devc->levels[dev] = retvol;
794
795 /* Set the left channel */
796 regoffs = mix_devices[dev][LEFT_CHN].regno;
797 val = ad_read (devc, regoffs);
798 change_bits (&val, dev, LEFT_CHN, left);
799
800 valmute=val;
801
802 /* Mute bit masking on some registers */
803 if ( regoffs==5 || regoffs==14 || regoffs==15 ||
804 regoffs==16 || regoffs==17 || regoffs==18 ||
805 regoffs==19 || regoffs==39) {
806 if (left==0)
807 valmute |= 0x8000;
808 else
809 valmute &= ~0x8000;
810 }
811 ad_write (devc, regoffs, valmute); /* mute */
812
813 /*
814 * Set the right channel
815 */
816
817 /* Was just a mono channel */
818 if (mix_devices[dev][RIGHT_CHN].nbits == 0) {
819 spin_unlock_irqrestore(&devc->lock, flags);
820 return retvol;
821 }
822
823 regoffs = mix_devices[dev][RIGHT_CHN].regno;
824 val = ad_read (devc, regoffs);
825 change_bits (&val, dev, RIGHT_CHN, right);
826
827 valmute=val;
828 if ( regoffs==5 || regoffs==14 || regoffs==15 ||
829 regoffs==16 || regoffs==17 || regoffs==18 ||
830 regoffs==19 || regoffs==39) {
831 if (right==0)
832 valmute |= 0x80;
833 else
834 valmute &= ~0x80;
835 }
836 ad_write (devc, regoffs, valmute); /* mute */
837 spin_unlock_irqrestore(&devc->lock, flags);
838 return retvol;
839 }
840
841 #define MIXER_DEVICES ( SOUND_MASK_VOLUME | \
842 SOUND_MASK_SYNTH | \
843 SOUND_MASK_PCM | \
844 SOUND_MASK_LINE | \
845 SOUND_MASK_LINE1 | \
846 SOUND_MASK_LINE2 | \
847 SOUND_MASK_LINE3 | \
848 SOUND_MASK_MIC | \
849 SOUND_MASK_CD | \
850 SOUND_MASK_RECLEV \
851 )
852 #define REC_DEVICES ( SOUND_MASK_LINE2 |\
853 SOUND_MASK_LINE |\
854 SOUND_MASK_LINE1 |\
855 SOUND_MASK_MIC |\
856 SOUND_MASK_CD |\
857 SOUND_MASK_VOLUME \
858 )
859
860 static void
861 ad1816_mixer_reset (ad1816_info * devc)
862 {
863 int i;
864
865 devc->supported_devices = MIXER_DEVICES;
866
867 devc->supported_rec_devices = REC_DEVICES;
868
869 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
870 if (devc->supported_devices & (1 << i))
871 ad1816_mixer_set (devc, i, default_mixer_levels[i]);
872 ad1816_set_recmask (devc, SOUND_MASK_MIC);
873 }
874
875 static int
876 ad1816_mixer_ioctl (int dev, unsigned int cmd, void __user * arg)
877 {
878 ad1816_info *devc = mixer_devs[dev]->devc;
879 int val;
880 int __user *p = arg;
881
882 DEBUGNOISE(printk(KERN_DEBUG "ad1816: mixer_ioctl called!\n"));
883
884 /* Mixer ioctl */
885 if (((cmd >> 8) & 0xff) == 'M') {
886
887 /* set ioctl */
888 if (_SIOC_DIR (cmd) & _SIOC_WRITE) {
889 switch (cmd & 0xff){
890 case SOUND_MIXER_RECSRC:
891
892 if (get_user(val, p))
893 return -EFAULT;
894 val=ad1816_set_recmask (devc, val);
895 return put_user(val, p);
896 break;
897
898 default:
899 if (get_user(val, p))
900 return -EFAULT;
901 if ((val=ad1816_mixer_set (devc, cmd & 0xff, val))<0)
902 return val;
903 else
904 return put_user(val, p);
905 }
906 } else {
907 /* read ioctl */
908 switch (cmd & 0xff) {
909
910 case SOUND_MIXER_RECSRC:
911 val=devc->recmask;
912 return put_user(val, p);
913 break;
914
915 case SOUND_MIXER_DEVMASK:
916 val=devc->supported_devices;
917 return put_user(val, p);
918 break;
919
920 case SOUND_MIXER_STEREODEVS:
921 val=devc->supported_devices & ~(SOUND_MASK_SPEAKER | SOUND_MASK_IMIX);
922 return put_user(val, p);
923 break;
924
925 case SOUND_MIXER_RECMASK:
926 val=devc->supported_rec_devices;
927 return put_user(val, p);
928 break;
929
930 case SOUND_MIXER_CAPS:
931 val=SOUND_CAP_EXCL_INPUT;
932 return put_user(val, p);
933 break;
934
935 default:
936 if ((val=ad1816_mixer_get (devc, cmd & 0xff))<0)
937 return val;
938 else
939 return put_user(val, p);
940 }
941 }
942 } else
943 /* not for mixer */
944 return -(EINVAL);
945 }
946
947 /* ------------------------------------------------------------------- */
948
949 /* Mixer structure */
950
951 static struct mixer_operations ad1816_mixer_operations = {
952 .owner = THIS_MODULE,
953 .id = "AD1816",
954 .name = "AD1816 Mixer",
955 .ioctl = ad1816_mixer_ioctl
956 };
957
958
959 /* ------------------------------------------------------------------- */
960
961 /* stuff for card recognition, init and unloading PNP ...*/
962
963
964 /* check if AD1816 present at specified hw_config and register device with OS
965 * return 1 if initialization was successful, 0 otherwise
966 */
967 static int __init ad1816_init_card (struct address_info *hw_config,
968 struct pnp_dev *pnp)
969 {
970 ad1816_info *devc = NULL;
971 int tmp;
972 int oss_devno = -1;
973
974 printk(KERN_INFO "ad1816: initializing card: io=0x%x, irq=%d, dma=%d, "
975 "dma2=%d, clockfreq=%d, options=%d isadmabug=%d "
976 "%s\n",
977 hw_config->io_base,
978 hw_config->irq,
979 hw_config->dma,
980 hw_config->dma2,
981 ad1816_clockfreq,
982 options,
983 isa_dma_bridge_buggy,
984 pnp?"(PNP)":"");
985
986 /* ad1816_info structure remaining ? */
987 if (nr_ad1816_devs >= MAX_AUDIO_DEV) {
988 printk(KERN_WARNING "ad1816: no more ad1816_info structures "
989 "left\n");
990 goto out;
991 }
992
993 devc = &dev_info[nr_ad1816_devs];
994 devc->base = hw_config->io_base;
995 devc->irq = hw_config->irq;
996 devc->dma_playback=hw_config->dma;
997 devc->dma_capture=hw_config->dma2;
998 devc->opened = 0;
999 devc->pnpdev = pnp;
1000 spin_lock_init(&devc->lock);
1001
1002 if (!request_region(devc->base, 16, "AD1816 Sound")) {
1003 printk(KERN_WARNING "ad1816: I/O port 0x%03x not free\n",
1004 devc->base);
1005 goto out;
1006 }
1007
1008 printk(KERN_INFO "ad1816: Examining AD1816 at address 0x%03x.\n",
1009 devc->base);
1010
1011
1012 /* tests for ad1816 */
1013 /* base+0: bit 1 must be set but not 255 */
1014 tmp=inb(devc->base);
1015 if ( (tmp&0x80)==0 || tmp==255 ) {
1016 printk (KERN_INFO "ad1816: Chip is not an AD1816 or chip "
1017 "is not active (Test 0)\n");
1018 goto out_release_region;
1019 }
1020
1021 /* writes to ireg 8 are copied to ireg 9 */
1022 ad_write(devc,8,12345);
1023 if (ad_read(devc,9)!=12345) {
1024 printk(KERN_INFO "ad1816: Chip is not an AD1816 (Test 1)\n");
1025 goto out_release_region;
1026 }
1027
1028 /* writes to ireg 8 are copied to ireg 9 */
1029 ad_write(devc,8,54321);
1030 if (ad_read(devc,9)!=54321) {
1031 printk(KERN_INFO "ad1816: Chip is not an AD1816 (Test 2)\n");
1032 goto out_release_region;
1033 }
1034
1035 /* writes to ireg 10 are copied to ireg 11 */
1036 ad_write(devc,10,54321);
1037 if (ad_read(devc,11)!=54321) {
1038 printk (KERN_INFO "ad1816: Chip is not an AD1816 (Test 3)\n");
1039 goto out_release_region;
1040 }
1041
1042 /* writes to ireg 10 are copied to ireg 11 */
1043 ad_write(devc,10,12345);
1044 if (ad_read(devc,11)!=12345) {
1045 printk (KERN_INFO "ad1816: Chip is not an AD1816 (Test 4)\n");
1046 goto out_release_region;
1047 }
1048
1049 /* bit in base +1 cannot be set to 1 */
1050 tmp=inb(devc->base+1);
1051 outb(0xff,devc->base+1);
1052 if (inb(devc->base+1)!=tmp) {
1053 printk(KERN_INFO "ad1816: Chip is not an AD1816 (Test 5)\n");
1054 goto out_release_region;
1055 }
1056
1057 printk(KERN_INFO "ad1816: AD1816 (version %d) successfully detected!\n",
1058 ad_read(devc,45));
1059
1060 /* disable all interrupts */
1061 ad_write(devc,1,0);
1062
1063 /* Clear pending interrupts */
1064 outb (0, devc->base+1);
1065
1066 /* allocate irq */
1067 if (devc->irq < 0 || devc->irq > 15)
1068 goto out_release_region;
1069 if (request_irq(devc->irq, ad1816_interrupt,0,
1070 "SoundPort", devc) < 0) {
1071 printk(KERN_WARNING "ad1816: IRQ in use\n");
1072 goto out_release_region;
1073 }
1074
1075 /* DMA stuff */
1076 if (sound_alloc_dma (devc->dma_playback, "Sound System")) {
1077 printk(KERN_WARNING "ad1816: Can't allocate DMA%d\n",
1078 devc->dma_playback);
1079 goto out_free_irq;
1080 }
1081
1082 if ( devc->dma_capture >= 0 &&
1083 devc->dma_capture != devc->dma_playback) {
1084 if (sound_alloc_dma(devc->dma_capture,
1085 "Sound System (capture)")) {
1086 printk(KERN_WARNING "ad1816: Can't allocate DMA%d\n",
1087 devc->dma_capture);
1088 goto out_free_dma;
1089 }
1090 devc->audio_mode=DMA_AUTOMODE|DMA_DUPLEX;
1091 } else {
1092 printk(KERN_WARNING "ad1816: Only one DMA channel "
1093 "available/configured. No duplex operation possible\n");
1094 devc->audio_mode=DMA_AUTOMODE;
1095 }
1096
1097 conf_printf2 ("AD1816 audio driver",
1098 devc->base, devc->irq, devc->dma_playback,
1099 devc->dma_capture);
1100
1101 /* register device */
1102 if ((oss_devno = sound_install_audiodrv (AUDIO_DRIVER_VERSION,
1103 "AD1816 audio driver",
1104 &ad1816_audio_driver,
1105 sizeof (struct audio_driver),
1106 devc->audio_mode,
1107 ad_format_mask,
1108 devc,
1109 devc->dma_playback,
1110 devc->dma_capture)) < 0) {
1111 printk(KERN_WARNING "ad1816: Can't install sound driver\n");
1112 goto out_free_dma_2;
1113 }
1114
1115
1116 ad_write(devc,32,0x80f0); /* sound system mode */
1117 if (options&1) {
1118 ad_write(devc,33,0); /* disable all audiosources for dsp */
1119 } else {
1120 ad_write(devc,33,0x03f8); /* enable all audiosources for dsp */
1121 }
1122 ad_write(devc,4,0x8080); /* default values for volumes (muted)*/
1123 ad_write(devc,5,0x8080);
1124 ad_write(devc,6,0x8080);
1125 ad_write(devc,7,0x8080);
1126 ad_write(devc,15,0x8888);
1127 ad_write(devc,16,0x8888);
1128 ad_write(devc,17,0x8888);
1129 ad_write(devc,18,0x8888);
1130 ad_write(devc,19,0xc888); /* +20db mic active */
1131 ad_write(devc,14,0x0000); /* Master volume unmuted */
1132 ad_write(devc,39,0x009f); /* 3D effect on 0% phone out muted */
1133 ad_write(devc,44,0x0080); /* everything on power, 3d enabled for d/a */
1134 outb(0x10,devc->base+8); /* set dma mode */
1135 outb(0x10,devc->base+9);
1136
1137 /* enable capture + playback interrupt */
1138 ad_write(devc,1,0xc000);
1139
1140 /* set mixer defaults */
1141 ad1816_mixer_reset (devc);
1142
1143 /* register mixer */
1144 if ((audio_devs[oss_devno]->mixer_dev=sound_install_mixer(
1145 MIXER_DRIVER_VERSION,
1146 "AD1816 audio driver",
1147 &ad1816_mixer_operations,
1148 sizeof (struct mixer_operations),
1149 devc)) < 0) {
1150 printk(KERN_WARNING "Can't install mixer\n");
1151 }
1152 /* make ad1816_info active */
1153 nr_ad1816_devs++;
1154 printk(KERN_INFO "ad1816: card successfully installed!\n");
1155 return 1;
1156 /* error handling */
1157 out_free_dma_2:
1158 if (devc->dma_capture >= 0 && devc->dma_capture != devc->dma_playback)
1159 sound_free_dma(devc->dma_capture);
1160 out_free_dma:
1161 sound_free_dma(devc->dma_playback);
1162 out_free_irq:
1163 free_irq(devc->irq, devc);
1164 out_release_region:
1165 release_region(devc->base, 16);
1166 out:
1167 return 0;
1168 }
1169
1170 static void __exit unload_card(ad1816_info *devc)
1171 {
1172 int mixer, dev = 0;
1173
1174 if (devc != NULL) {
1175 printk("ad1816: Unloading card at address 0x%03x\n",devc->base);
1176
1177 dev = devc->dev_no;
1178 mixer = audio_devs[dev]->mixer_dev;
1179
1180 /* unreg mixer*/
1181 if(mixer>=0) {
1182 sound_unload_mixerdev(mixer);
1183 }
1184 /* unreg audiodev */
1185 sound_unload_audiodev(dev);
1186
1187 /* free dma channels */
1188 if (devc->dma_capture>=0 &&
1189 devc->dma_capture != devc->dma_playback) {
1190 sound_free_dma(devc->dma_capture);
1191 }
1192 sound_free_dma (devc->dma_playback);
1193 /* free irq */
1194 free_irq(devc->irq, devc);
1195 /* free io */
1196 release_region (devc->base, 16);
1197 #ifdef __ISAPNP__
1198 if (devc->pnpdev) {
1199 pnp_disable_dev(devc->pnpdev);
1200 pnp_device_detach(devc->pnpdev);
1201 }
1202 #endif
1203
1204 } else
1205 printk(KERN_WARNING "ad1816: no device/card specified\n");
1206 }
1207
1208 static int __initdata io = -1;
1209 static int __initdata irq = -1;
1210 static int __initdata dma = -1;
1211 static int __initdata dma2 = -1;
1212
1213 #ifdef __ISAPNP__
1214 /* use isapnp for configuration */
1215 static int isapnp = 1;
1216 static int isapnpjump;
1217 module_param(isapnp, bool, 0);
1218 module_param(isapnpjump, int, 0);
1219 #endif
1220
1221 module_param(io, int, 0);
1222 module_param(irq, int, 0);
1223 module_param(dma, int, 0);
1224 module_param(dma2, int, 0);
1225 module_param(ad1816_clockfreq, int, 0);
1226 module_param(options, int, 0);
1227
1228 #ifdef __ISAPNP__
1229 static struct {
1230 unsigned short card_vendor, card_device;
1231 unsigned short vendor;
1232 unsigned short function;
1233 struct ad1816_data *data;
1234 } isapnp_ad1816_list[] __initdata = {
1235 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
1236 ISAPNP_VENDOR('A','D','S'), ISAPNP_FUNCTION(0x7150),
1237 NULL },
1238 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
1239 ISAPNP_VENDOR('A','D','S'), ISAPNP_FUNCTION(0x7180),
1240 NULL },
1241 {0}
1242 };
1243
1244 MODULE_DEVICE_TABLE(isapnp, isapnp_ad1816_list);
1245
1246
1247 static void __init ad1816_config_pnp_card(struct pnp_card *card,
1248 unsigned short vendor,
1249 unsigned short function)
1250 {
1251 struct address_info cfg;
1252 struct pnp_dev *card_dev = pnp_find_dev(card, vendor, function, NULL);
1253 if (!card_dev) return;
1254 if (pnp_device_attach(card_dev) < 0) {
1255 printk(KERN_WARNING "ad1816: Failed to attach PnP device\n");
1256 return;
1257 }
1258 if (pnp_activate_dev(card_dev) < 0) {
1259 printk(KERN_WARNING "ad1816: Failed to activate PnP device\n");
1260 pnp_device_detach(card_dev);
1261 return;
1262 }
1263 cfg.io_base = pnp_port_start(card_dev, 2);
1264 cfg.irq = pnp_irq(card_dev, 0);
1265 cfg.dma = pnp_irq(card_dev, 0);
1266 cfg.dma2 = pnp_irq(card_dev, 1);
1267 if (!ad1816_init_card(&cfg, card_dev)) {
1268 pnp_disable_dev(card_dev);
1269 pnp_device_detach(card_dev);
1270 }
1271 }
1272
1273 static void __init ad1816_config_pnp_cards(void)
1274 {
1275 int nr_pnp_cfg;
1276 int i;
1277
1278 /* Count entries in isapnp_ad1816_list */
1279 for (nr_pnp_cfg = 0; isapnp_ad1816_list[nr_pnp_cfg].card_vendor != 0;
1280 nr_pnp_cfg++);
1281 /* Check and adjust isapnpjump */
1282 if( isapnpjump < 0 || isapnpjump >= nr_pnp_cfg) {
1283 printk(KERN_WARNING
1284 "ad1816: Valid range for isapnpjump is 0-%d. "
1285 "Adjusted to 0.\n", nr_pnp_cfg-1);
1286 isapnpjump = 0;
1287 }
1288 for (i = isapnpjump; isapnp_ad1816_list[i].card_vendor != 0; i++) {
1289 struct pnp_card *card = NULL;
1290 /* iterate over all pnp cards */
1291 while ((card = pnp_find_card(isapnp_ad1816_list[i].card_vendor,
1292 isapnp_ad1816_list[i].card_device, card)))
1293 ad1816_config_pnp_card(card,
1294 isapnp_ad1816_list[i].vendor,
1295 isapnp_ad1816_list[i].function);
1296 }
1297 }
1298 #endif
1299
1300 /* module initialization */
1301 static int __init init_ad1816(void)
1302 {
1303 printk(KERN_INFO "ad1816: AD1816 sounddriver "
1304 "Copyright (C) 1998-2003 by Thorsten Knabe and "
1305 "others\n");
1306 #ifdef AD1816_CLOCK
1307 /* set ad1816_clockfreq if set during compilation */
1308 ad1816_clockfreq=AD1816_CLOCK;
1309 #endif
1310 if (ad1816_clockfreq<5000 || ad1816_clockfreq>100000) {
1311 ad1816_clockfreq=33000;
1312 }
1313
1314 #ifdef __ISAPNP__
1315 /* configure PnP cards */
1316 if(isapnp) ad1816_config_pnp_cards();
1317 #endif
1318 /* configure card by module params */
1319 if (io != -1 && irq != -1 && dma != -1) {
1320 struct address_info cfg;
1321 cfg.io_base = io;
1322 cfg.irq = irq;
1323 cfg.dma = dma;
1324 cfg.dma2 = dma2;
1325 ad1816_init_card(&cfg, NULL);
1326 }
1327 if (nr_ad1816_devs <= 0)
1328 return -ENODEV;
1329 return 0;
1330 }
1331
1332 /* module cleanup */
1333 static void __exit cleanup_ad1816 (void)
1334 {
1335 int i;
1336 ad1816_info *devc = NULL;
1337
1338 /* remove any soundcard */
1339 for (i = 0; i < nr_ad1816_devs; i++) {
1340 devc = &dev_info[i];
1341 unload_card(devc);
1342 }
1343 nr_ad1816_devs=0;
1344 printk(KERN_INFO "ad1816: driver unloaded!\n");
1345 }
1346
1347 module_init(init_ad1816);
1348 module_exit(cleanup_ad1816);
1349
1350 #ifndef MODULE
1351 /* kernel command line parameter evaluation */
1352 static int __init setup_ad1816(char *str)
1353 {
1354 /* io, irq, dma, dma2 */
1355 int ints[5];
1356
1357 str = get_options(str, ARRAY_SIZE(ints), ints);
1358
1359 io = ints[1];
1360 irq = ints[2];
1361 dma = ints[3];
1362 dma2 = ints[4];
1363 return 1;
1364 }
1365
1366 __setup("ad1816=", setup_ad1816);
1367 #endif
1368 MODULE_LICENSE("GPL");
WRT350N Kernel Patches