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staging: ozwpan: Add module parameter description
[linux/fpc-iii.git] / sound / oss / ad1848.c
blobec1ee07df59d2ecd27dab0c2cfb204c1119389f6
1 /*
2 * sound/oss/ad1848.c
3 *
4 * The low level driver for the AD1848/CS4248 codec chip which
5 * is used for example in the MS Sound System.
6 *
7 * The CS4231 which is used in the GUS MAX and some other cards is
8 * upwards compatible with AD1848 and this driver is able to drive it.
9 *
10 * CS4231A and AD1845 are upward compatible with CS4231. However
11 * the new features of these chips are different.
12 *
13 * CS4232 is a PnP audio chip which contains a CS4231A (and SB, MPU).
14 * CS4232A is an improved version of CS4232.
15 *
16 *
17 *
18 * Copyright (C) by Hannu Savolainen 1993-1997
19 *
20 * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
21 * Version 2 (June 1991). See the "COPYING" file distributed with this software
22 * for more info.
23 *
24 *
25 * Thomas Sailer : ioctl code reworked (vmalloc/vfree removed)
26 * general sleep/wakeup clean up.
27 * Alan Cox : reformatted. Fixed SMP bugs. Moved to kernel alloc/free
28 * of irqs. Use dev_id.
29 * Christoph Hellwig : adapted to module_init/module_exit
30 * Aki Laukkanen : added power management support
31 * Arnaldo C. de Melo : added missing restore_flags in ad1848_resume
32 * Miguel Freitas : added ISA PnP support
33 * Alan Cox : Added CS4236->4239 identification
34 * Daniel T. Cobra : Alernate config/mixer for later chips
35 * Alan Cox : Merged chip idents and config code
36 *
37 * TODO
38 * APM save restore assist code on IBM thinkpad
39 *
40 * Status:
41 * Tested. Believed fully functional.
42 */
43
44 #include <linux/init.h>
45 #include <linux/interrupt.h>
46 #include <linux/module.h>
47 #include <linux/stddef.h>
48 #include <linux/slab.h>
49 #include <linux/isapnp.h>
50 #include <linux/pnp.h>
51 #include <linux/spinlock.h>
52
53 #include "sound_config.h"
54
55 #include "ad1848.h"
56 #include "ad1848_mixer.h"
57
58 typedef struct
59 {
60 spinlock_t lock;
61 int base;
62 int irq;
63 int dma1, dma2;
64 int dual_dma; /* 1, when two DMA channels allocated */
65 int subtype;
66 unsigned char MCE_bit;
67 unsigned char saved_regs[64]; /* Includes extended register space */
68 int debug_flag;
69
70 int audio_flags;
71 int record_dev, playback_dev;
72
73 int xfer_count;
74 int audio_mode;
75 int open_mode;
76 int intr_active;
77 char *chip_name, *name;
78 int model;
79 #define MD_1848 1
80 #define MD_4231 2
81 #define MD_4231A 3
82 #define MD_1845 4
83 #define MD_4232 5
84 #define MD_C930 6
85 #define MD_IWAVE 7
86 #define MD_4235 8 /* Crystal Audio CS4235 */
87 #define MD_1845_SSCAPE 9 /* Ensoniq Soundscape PNP*/
88 #define MD_4236 10 /* 4236 and higher */
89 #define MD_42xB 11 /* CS 42xB */
90 #define MD_4239 12 /* CS4239 */
91
92 /* Mixer parameters */
93 int recmask;
94 int supported_devices, orig_devices;
95 int supported_rec_devices, orig_rec_devices;
96 int *levels;
97 short mixer_reroute[32];
98 int dev_no;
99 volatile unsigned long timer_ticks;
100 int timer_running;
101 int irq_ok;
102 mixer_ents *mix_devices;
103 int mixer_output_port;
104 } ad1848_info;
105
106 typedef struct ad1848_port_info
107 {
108 int open_mode;
109 int speed;
110 unsigned char speed_bits;
111 int channels;
112 int audio_format;
113 unsigned char format_bits;
114 }
115 ad1848_port_info;
116
117 static struct address_info cfg;
118 static int nr_ad1848_devs;
119
120 static bool deskpro_xl;
121 static bool deskpro_m;
122 static bool soundpro;
123
124 static volatile signed char irq2dev[17] = {
125 -1, -1, -1, -1, -1, -1, -1, -1,
126 -1, -1, -1, -1, -1, -1, -1, -1, -1
127 };
128
129 #ifndef EXCLUDE_TIMERS
130 static int timer_installed = -1;
131 #endif
132
133 static int loaded;
134
135 static int ad_format_mask[13 /*devc->model */ ] =
136 {
137 0,
138 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW,
139 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
140 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
141 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW, /* AD1845 */
142 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
143 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
144 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
145 AFMT_U8 | AFMT_S16_LE /* CS4235 */,
146 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW /* Ensoniq Soundscape*/,
147 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
148 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
149 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM
150 };
151
152 static ad1848_info adev_info[MAX_AUDIO_DEV];
153
154 #define io_Index_Addr(d) ((d)->base)
155 #define io_Indexed_Data(d) ((d)->base+1)
156 #define io_Status(d) ((d)->base+2)
157 #define io_Polled_IO(d) ((d)->base+3)
158
159 static struct {
160 unsigned char flags;
161 #define CAP_F_TIMER 0x01
162 } capabilities [10 /*devc->model */ ] = {
163 {0}
164 ,{0} /* MD_1848 */
165 ,{CAP_F_TIMER} /* MD_4231 */
166 ,{CAP_F_TIMER} /* MD_4231A */
167 ,{CAP_F_TIMER} /* MD_1845 */
168 ,{CAP_F_TIMER} /* MD_4232 */
169 ,{0} /* MD_C930 */
170 ,{CAP_F_TIMER} /* MD_IWAVE */
171 ,{0} /* MD_4235 */
172 ,{CAP_F_TIMER} /* MD_1845_SSCAPE */
173 };
174
175 #ifdef CONFIG_PNP
176 static int isapnp = 1;
177 static int isapnpjump;
178 static bool reverse;
179
180 static int audio_activated;
181 #else
182 static int isapnp;
183 #endif
184
185
186
187 static int ad1848_open(int dev, int mode);
188 static void ad1848_close(int dev);
189 static void ad1848_output_block(int dev, unsigned long buf, int count, int intrflag);
190 static void ad1848_start_input(int dev, unsigned long buf, int count, int intrflag);
191 static int ad1848_prepare_for_output(int dev, int bsize, int bcount);
192 static int ad1848_prepare_for_input(int dev, int bsize, int bcount);
193 static void ad1848_halt(int dev);
194 static void ad1848_halt_input(int dev);
195 static void ad1848_halt_output(int dev);
196 static void ad1848_trigger(int dev, int bits);
197 static irqreturn_t adintr(int irq, void *dev_id);
198
199 #ifndef EXCLUDE_TIMERS
200 static int ad1848_tmr_install(int dev);
201 static void ad1848_tmr_reprogram(int dev);
202 #endif
203
204 static int ad_read(ad1848_info * devc, int reg)
205 {
206 int x;
207 int timeout = 900000;
208
209 while (timeout > 0 && inb(devc->base) == 0x80) /*Are we initializing */
210 timeout--;
211
212 if(reg < 32)
213 {
214 outb(((unsigned char) (reg & 0xff) | devc->MCE_bit), io_Index_Addr(devc));
215 x = inb(io_Indexed_Data(devc));
216 }
217 else
218 {
219 int xreg, xra;
220
221 xreg = (reg & 0xff) - 32;
222 xra = (((xreg & 0x0f) << 4) & 0xf0) | 0x08 | ((xreg & 0x10) >> 2);
223 outb(((unsigned char) (23 & 0xff) | devc->MCE_bit), io_Index_Addr(devc));
224 outb(((unsigned char) (xra & 0xff)), io_Indexed_Data(devc));
225 x = inb(io_Indexed_Data(devc));
226 }
227
228 return x;
229 }
230
231 static void ad_write(ad1848_info * devc, int reg, int data)
232 {
233 int timeout = 900000;
234
235 while (timeout > 0 && inb(devc->base) == 0x80) /* Are we initializing */
236 timeout--;
237
238 if(reg < 32)
239 {
240 outb(((unsigned char) (reg & 0xff) | devc->MCE_bit), io_Index_Addr(devc));
241 outb(((unsigned char) (data & 0xff)), io_Indexed_Data(devc));
242 }
243 else
244 {
245 int xreg, xra;
246
247 xreg = (reg & 0xff) - 32;
248 xra = (((xreg & 0x0f) << 4) & 0xf0) | 0x08 | ((xreg & 0x10) >> 2);
249 outb(((unsigned char) (23 & 0xff) | devc->MCE_bit), io_Index_Addr(devc));
250 outb(((unsigned char) (xra & 0xff)), io_Indexed_Data(devc));
251 outb((unsigned char) (data & 0xff), io_Indexed_Data(devc));
252 }
253 }
254
255 static void wait_for_calibration(ad1848_info * devc)
256 {
257 int timeout = 0;
258
259 /*
260 * Wait until the auto calibration process has finished.
261 *
262 * 1) Wait until the chip becomes ready (reads don't return 0x80).
263 * 2) Wait until the ACI bit of I11 gets on and then off.
264 */
265
266 timeout = 100000;
267 while (timeout > 0 && inb(devc->base) == 0x80)
268 timeout--;
269 if (inb(devc->base) & 0x80)
270 printk(KERN_WARNING "ad1848: Auto calibration timed out(1).\n");
271
272 timeout = 100;
273 while (timeout > 0 && !(ad_read(devc, 11) & 0x20))
274 timeout--;
275 if (!(ad_read(devc, 11) & 0x20))
276 return;
277
278 timeout = 80000;
279 while (timeout > 0 && (ad_read(devc, 11) & 0x20))
280 timeout--;
281 if (ad_read(devc, 11) & 0x20)
282 if ((devc->model != MD_1845) && (devc->model != MD_1845_SSCAPE))
283 printk(KERN_WARNING "ad1848: Auto calibration timed out(3).\n");
284 }
285
286 static void ad_mute(ad1848_info * devc)
287 {
288 int i;
289 unsigned char prev;
290
291 /*
292 * Save old register settings and mute output channels
293 */
294
295 for (i = 6; i < 8; i++)
296 {
297 prev = devc->saved_regs[i] = ad_read(devc, i);
298 }
299
300 }
301
302 static void ad_unmute(ad1848_info * devc)
303 {
304 }
305
306 static void ad_enter_MCE(ad1848_info * devc)
307 {
308 int timeout = 1000;
309 unsigned short prev;
310
311 while (timeout > 0 && inb(devc->base) == 0x80) /*Are we initializing */
312 timeout--;
313
314 devc->MCE_bit = 0x40;
315 prev = inb(io_Index_Addr(devc));
316 if (prev & 0x40)
317 {
318 return;
319 }
320 outb((devc->MCE_bit), io_Index_Addr(devc));
321 }
322
323 static void ad_leave_MCE(ad1848_info * devc)
324 {
325 unsigned char prev, acal;
326 int timeout = 1000;
327
328 while (timeout > 0 && inb(devc->base) == 0x80) /*Are we initializing */
329 timeout--;
330
331 acal = ad_read(devc, 9);
332
333 devc->MCE_bit = 0x00;
334 prev = inb(io_Index_Addr(devc));
335 outb((0x00), io_Index_Addr(devc)); /* Clear the MCE bit */
336
337 if ((prev & 0x40) == 0) /* Not in MCE mode */
338 {
339 return;
340 }
341 outb((0x00), io_Index_Addr(devc)); /* Clear the MCE bit */
342 if (acal & 0x08) /* Auto calibration is enabled */
343 wait_for_calibration(devc);
344 }
345
346 static int ad1848_set_recmask(ad1848_info * devc, int mask)
347 {
348 unsigned char recdev;
349 int i, n;
350 unsigned long flags;
351
352 mask &= devc->supported_rec_devices;
353
354 /* Rename the mixer bits if necessary */
355 for (i = 0; i < 32; i++)
356 {
357 if (devc->mixer_reroute[i] != i)
358 {
359 if (mask & (1 << i))
360 {
361 mask &= ~(1 << i);
362 mask |= (1 << devc->mixer_reroute[i]);
363 }
364 }
365 }
366
367 n = 0;
368 for (i = 0; i < 32; i++) /* Count selected device bits */
369 if (mask & (1 << i))
370 n++;
371
372 spin_lock_irqsave(&devc->lock,flags);
373 if (!soundpro) {
374 if (n == 0)
375 mask = SOUND_MASK_MIC;
376 else if (n != 1) { /* Too many devices selected */
377 mask &= ~devc->recmask; /* Filter out active settings */
378
379 n = 0;
380 for (i = 0; i < 32; i++) /* Count selected device bits */
381 if (mask & (1 << i))
382 n++;
383
384 if (n != 1)
385 mask = SOUND_MASK_MIC;
386 }
387 switch (mask) {
388 case SOUND_MASK_MIC:
389 recdev = 2;
390 break;
391
392 case SOUND_MASK_LINE:
393 case SOUND_MASK_LINE3:
394 recdev = 0;
395 break;
396
397 case SOUND_MASK_CD:
398 case SOUND_MASK_LINE1:
399 recdev = 1;
400 break;
401
402 case SOUND_MASK_IMIX:
403 recdev = 3;
404 break;
405
406 default:
407 mask = SOUND_MASK_MIC;
408 recdev = 2;
409 }
410
411 recdev <<= 6;
412 ad_write(devc, 0, (ad_read(devc, 0) & 0x3f) | recdev);
413 ad_write(devc, 1, (ad_read(devc, 1) & 0x3f) | recdev);
414 } else { /* soundpro */
415 unsigned char val;
416 int set_rec_bit;
417 int j;
418
419 for (i = 0; i < 32; i++) { /* For each bit */
420 if ((devc->supported_rec_devices & (1 << i)) == 0)
421 continue; /* Device not supported */
422
423 for (j = LEFT_CHN; j <= RIGHT_CHN; j++) {
424 if (devc->mix_devices[i][j].nbits == 0) /* Inexistent channel */
425 continue;
426
427 /*
428 * This is tricky:
429 * set_rec_bit becomes 1 if the corresponding bit in mask is set
430 * then it gets flipped if the polarity is inverse
431 */
432 set_rec_bit = ((mask & (1 << i)) != 0) ^ devc->mix_devices[i][j].recpol;
433
434 val = ad_read(devc, devc->mix_devices[i][j].recreg);
435 val &= ~(1 << devc->mix_devices[i][j].recpos);
436 val |= (set_rec_bit << devc->mix_devices[i][j].recpos);
437 ad_write(devc, devc->mix_devices[i][j].recreg, val);
438 }
439 }
440 }
441 spin_unlock_irqrestore(&devc->lock,flags);
442
443 /* Rename the mixer bits back if necessary */
444 for (i = 0; i < 32; i++)
445 {
446 if (devc->mixer_reroute[i] != i)
447 {
448 if (mask & (1 << devc->mixer_reroute[i]))
449 {
450 mask &= ~(1 << devc->mixer_reroute[i]);
451 mask |= (1 << i);
452 }
453 }
454 }
455 devc->recmask = mask;
456 return mask;
457 }
458
459 static void oss_change_bits(ad1848_info *devc, unsigned char *regval,
460 unsigned char *muteval, int dev, int chn, int newval)
461 {
462 unsigned char mask;
463 int shift;
464 int mute;
465 int mutemask;
466 int set_mute_bit;
467
468 set_mute_bit = (newval == 0) ^ devc->mix_devices[dev][chn].mutepol;
469
470 if (devc->mix_devices[dev][chn].polarity == 1) /* Reverse */
471 newval = 100 - newval;
472
473 mask = (1 << devc->mix_devices[dev][chn].nbits) - 1;
474 shift = devc->mix_devices[dev][chn].bitpos;
475
476 if (devc->mix_devices[dev][chn].mutepos == 8)
477 { /* if there is no mute bit */
478 mute = 0; /* No mute bit; do nothing special */
479 mutemask = ~0; /* No mute bit; do nothing special */
480 }
481 else
482 {
483 mute = (set_mute_bit << devc->mix_devices[dev][chn].mutepos);
484 mutemask = ~(1 << devc->mix_devices[dev][chn].mutepos);
485 }
486
487 newval = (int) ((newval * mask) + 50) / 100; /* Scale it */
488 *regval &= ~(mask << shift); /* Clear bits */
489 *regval |= (newval & mask) << shift; /* Set new value */
490
491 *muteval &= mutemask;
492 *muteval |= mute;
493 }
494
495 static int ad1848_mixer_get(ad1848_info * devc, int dev)
496 {
497 if (!((1 << dev) & devc->supported_devices))
498 return -EINVAL;
499
500 dev = devc->mixer_reroute[dev];
501
502 return devc->levels[dev];
503 }
504
505 static void ad1848_mixer_set_channel(ad1848_info *devc, int dev, int value, int channel)
506 {
507 int regoffs, muteregoffs;
508 unsigned char val, muteval;
509 unsigned long flags;
510
511 regoffs = devc->mix_devices[dev][channel].regno;
512 muteregoffs = devc->mix_devices[dev][channel].mutereg;
513 val = ad_read(devc, regoffs);
514
515 if (muteregoffs != regoffs) {
516 muteval = ad_read(devc, muteregoffs);
517 oss_change_bits(devc, &val, &muteval, dev, channel, value);
518 }
519 else
520 oss_change_bits(devc, &val, &val, dev, channel, value);
521
522 spin_lock_irqsave(&devc->lock,flags);
523 ad_write(devc, regoffs, val);
524 devc->saved_regs[regoffs] = val;
525 if (muteregoffs != regoffs) {
526 ad_write(devc, muteregoffs, muteval);
527 devc->saved_regs[muteregoffs] = muteval;
528 }
529 spin_unlock_irqrestore(&devc->lock,flags);
530 }
531
532 static int ad1848_mixer_set(ad1848_info * devc, int dev, int value)
533 {
534 int left = value & 0x000000ff;
535 int right = (value & 0x0000ff00) >> 8;
536 int retvol;
537
538 if (dev > 31)
539 return -EINVAL;
540
541 if (!(devc->supported_devices & (1 << dev)))
542 return -EINVAL;
543
544 dev = devc->mixer_reroute[dev];
545
546 if (devc->mix_devices[dev][LEFT_CHN].nbits == 0)
547 return -EINVAL;
548
549 if (left > 100)
550 left = 100;
551 if (right > 100)
552 right = 100;
553
554 if (devc->mix_devices[dev][RIGHT_CHN].nbits == 0) /* Mono control */
555 right = left;
556
557 retvol = left | (right << 8);
558
559 /* Scale volumes */
560 left = mix_cvt[left];
561 right = mix_cvt[right];
562
563 devc->levels[dev] = retvol;
564
565 /*
566 * Set the left channel
567 */
568 ad1848_mixer_set_channel(devc, dev, left, LEFT_CHN);
569
570 /*
571 * Set the right channel
572 */
573 if (devc->mix_devices[dev][RIGHT_CHN].nbits == 0)
574 goto out;
575 ad1848_mixer_set_channel(devc, dev, right, RIGHT_CHN);
576
577 out:
578 return retvol;
579 }
580
581 static void ad1848_mixer_reset(ad1848_info * devc)
582 {
583 int i;
584 char name[32];
585 unsigned long flags;
586
587 devc->mix_devices = &(ad1848_mix_devices[0]);
588
589 sprintf(name, "%s_%d", devc->chip_name, nr_ad1848_devs);
590
591 for (i = 0; i < 32; i++)
592 devc->mixer_reroute[i] = i;
593
594 devc->supported_rec_devices = MODE1_REC_DEVICES;
595
596 switch (devc->model)
597 {
598 case MD_4231:
599 case MD_4231A:
600 case MD_1845:
601 case MD_1845_SSCAPE:
602 devc->supported_devices = MODE2_MIXER_DEVICES;
603 break;
604
605 case MD_C930:
606 devc->supported_devices = C930_MIXER_DEVICES;
607 devc->mix_devices = &(c930_mix_devices[0]);
608 break;
609
610 case MD_IWAVE:
611 devc->supported_devices = MODE3_MIXER_DEVICES;
612 devc->mix_devices = &(iwave_mix_devices[0]);
613 break;
614
615 case MD_42xB:
616 case MD_4239:
617 devc->mix_devices = &(cs42xb_mix_devices[0]);
618 devc->supported_devices = MODE3_MIXER_DEVICES;
619 break;
620 case MD_4232:
621 case MD_4235:
622 case MD_4236:
623 devc->supported_devices = MODE3_MIXER_DEVICES;
624 break;
625
626 case MD_1848:
627 if (soundpro) {
628 devc->supported_devices = SPRO_MIXER_DEVICES;
629 devc->supported_rec_devices = SPRO_REC_DEVICES;
630 devc->mix_devices = &(spro_mix_devices[0]);
631 break;
632 }
633
634 default:
635 devc->supported_devices = MODE1_MIXER_DEVICES;
636 }
637
638 devc->orig_devices = devc->supported_devices;
639 devc->orig_rec_devices = devc->supported_rec_devices;
640
641 devc->levels = load_mixer_volumes(name, default_mixer_levels, 1);
642
643 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
644 {
645 if (devc->supported_devices & (1 << i))
646 ad1848_mixer_set(devc, i, devc->levels[i]);
647 }
648
649 ad1848_set_recmask(devc, SOUND_MASK_MIC);
650
651 devc->mixer_output_port = devc->levels[31] | AUDIO_HEADPHONE | AUDIO_LINE_OUT;
652
653 spin_lock_irqsave(&devc->lock,flags);
654 if (!soundpro) {
655 if (devc->mixer_output_port & AUDIO_SPEAKER)
656 ad_write(devc, 26, ad_read(devc, 26) & ~0x40); /* Unmute mono out */
657 else
658 ad_write(devc, 26, ad_read(devc, 26) | 0x40); /* Mute mono out */
659 } else {
660 /*
661 * From the "wouldn't it be nice if the mixer API had (better)
662 * support for custom stuff" category
663 */
664 /* Enable surround mode and SB16 mixer */
665 ad_write(devc, 16, 0x60);
666 }
667 spin_unlock_irqrestore(&devc->lock,flags);
668 }
669
670 static int ad1848_mixer_ioctl(int dev, unsigned int cmd, void __user *arg)
671 {
672 ad1848_info *devc = mixer_devs[dev]->devc;
673 int val;
674
675 if (cmd == SOUND_MIXER_PRIVATE1)
676 {
677 if (get_user(val, (int __user *)arg))
678 return -EFAULT;
679
680 if (val != 0xffff)
681 {
682 unsigned long flags;
683 val &= (AUDIO_SPEAKER | AUDIO_HEADPHONE | AUDIO_LINE_OUT);
684 devc->mixer_output_port = val;
685 val |= AUDIO_HEADPHONE | AUDIO_LINE_OUT; /* Always on */
686 devc->mixer_output_port = val;
687 spin_lock_irqsave(&devc->lock,flags);
688 if (val & AUDIO_SPEAKER)
689 ad_write(devc, 26, ad_read(devc, 26) & ~0x40); /* Unmute mono out */
690 else
691 ad_write(devc, 26, ad_read(devc, 26) | 0x40); /* Mute mono out */
692 spin_unlock_irqrestore(&devc->lock,flags);
693 }
694 val = devc->mixer_output_port;
695 return put_user(val, (int __user *)arg);
696 }
697 if (cmd == SOUND_MIXER_PRIVATE2)
698 {
699 if (get_user(val, (int __user *)arg))
700 return -EFAULT;
701 return(ad1848_control(AD1848_MIXER_REROUTE, val));
702 }
703 if (((cmd >> 8) & 0xff) == 'M')
704 {
705 if (_SIOC_DIR(cmd) & _SIOC_WRITE)
706 {
707 switch (cmd & 0xff)
708 {
709 case SOUND_MIXER_RECSRC:
710 if (get_user(val, (int __user *)arg))
711 return -EFAULT;
712 val = ad1848_set_recmask(devc, val);
713 break;
714
715 default:
716 if (get_user(val, (int __user *)arg))
717 return -EFAULT;
718 val = ad1848_mixer_set(devc, cmd & 0xff, val);
719 break;
720 }
721 return put_user(val, (int __user *)arg);
722 }
723 else
724 {
725 switch (cmd & 0xff)
726 {
727 /*
728 * Return parameters
729 */
730
731 case SOUND_MIXER_RECSRC:
732 val = devc->recmask;
733 break;
734
735 case SOUND_MIXER_DEVMASK:
736 val = devc->supported_devices;
737 break;
738
739 case SOUND_MIXER_STEREODEVS:
740 val = devc->supported_devices;
741 if (devc->model != MD_C930)
742 val &= ~(SOUND_MASK_SPEAKER | SOUND_MASK_IMIX);
743 break;
744
745 case SOUND_MIXER_RECMASK:
746 val = devc->supported_rec_devices;
747 break;
748
749 case SOUND_MIXER_CAPS:
750 val=SOUND_CAP_EXCL_INPUT;
751 break;
752
753 default:
754 val = ad1848_mixer_get(devc, cmd & 0xff);
755 break;
756 }
757 return put_user(val, (int __user *)arg);
758 }
759 }
760 else
761 return -EINVAL;
762 }
763
764 static int ad1848_set_speed(int dev, int arg)
765 {
766 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
767 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
768
769 /*
770 * The sampling speed is encoded in the least significant nibble of I8. The
771 * LSB selects the clock source (0=24.576 MHz, 1=16.9344 MHz) and other
772 * three bits select the divisor (indirectly):
773 *
774 * The available speeds are in the following table. Keep the speeds in
775 * the increasing order.
776 */
777 typedef struct
778 {
779 int speed;
780 unsigned char bits;
781 }
782 speed_struct;
783
784 static speed_struct speed_table[] =
785 {
786 {5510, (0 << 1) | 1},
787 {5510, (0 << 1) | 1},
788 {6620, (7 << 1) | 1},
789 {8000, (0 << 1) | 0},
790 {9600, (7 << 1) | 0},
791 {11025, (1 << 1) | 1},
792 {16000, (1 << 1) | 0},
793 {18900, (2 << 1) | 1},
794 {22050, (3 << 1) | 1},
795 {27420, (2 << 1) | 0},
796 {32000, (3 << 1) | 0},
797 {33075, (6 << 1) | 1},
798 {37800, (4 << 1) | 1},
799 {44100, (5 << 1) | 1},
800 {48000, (6 << 1) | 0}
801 };
802
803 int i, n, selected = -1;
804
805 n = sizeof(speed_table) / sizeof(speed_struct);
806
807 if (arg <= 0)
808 return portc->speed;
809
810 if (devc->model == MD_1845 || devc->model == MD_1845_SSCAPE) /* AD1845 has different timer than others */
811 {
812 if (arg < 4000)
813 arg = 4000;
814 if (arg > 50000)
815 arg = 50000;
816
817 portc->speed = arg;
818 portc->speed_bits = speed_table[3].bits;
819 return portc->speed;
820 }
821 if (arg < speed_table[0].speed)
822 selected = 0;
823 if (arg > speed_table[n - 1].speed)
824 selected = n - 1;
825
826 for (i = 1 /*really */ ; selected == -1 && i < n; i++)
827 {
828 if (speed_table[i].speed == arg)
829 selected = i;
830 else if (speed_table[i].speed > arg)
831 {
832 int diff1, diff2;
833
834 diff1 = arg - speed_table[i - 1].speed;
835 diff2 = speed_table[i].speed - arg;
836
837 if (diff1 < diff2)
838 selected = i - 1;
839 else
840 selected = i;
841 }
842 }
843 if (selected == -1)
844 {
845 printk(KERN_WARNING "ad1848: Can't find speed???\n");
846 selected = 3;
847 }
848 portc->speed = speed_table[selected].speed;
849 portc->speed_bits = speed_table[selected].bits;
850 return portc->speed;
851 }
852
853 static short ad1848_set_channels(int dev, short arg)
854 {
855 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
856
857 if (arg != 1 && arg != 2)
858 return portc->channels;
859
860 portc->channels = arg;
861 return arg;
862 }
863
864 static unsigned int ad1848_set_bits(int dev, unsigned int arg)
865 {
866 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
867 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
868
869 static struct format_tbl
870 {
871 int format;
872 unsigned char bits;
873 }
874 format2bits[] =
875 {
876 {
877 0, 0
878 }
879 ,
880 {
881 AFMT_MU_LAW, 1
882 }
883 ,
884 {
885 AFMT_A_LAW, 3
886 }
887 ,
888 {
889 AFMT_IMA_ADPCM, 5
890 }
891 ,
892 {
893 AFMT_U8, 0
894 }
895 ,
896 {
897 AFMT_S16_LE, 2
898 }
899 ,
900 {
901 AFMT_S16_BE, 6
902 }
903 ,
904 {
905 AFMT_S8, 0
906 }
907 ,
908 {
909 AFMT_U16_LE, 0
910 }
911 ,
912 {
913 AFMT_U16_BE, 0
914 }
915 };
916 int i, n = sizeof(format2bits) / sizeof(struct format_tbl);
917
918 if (arg == 0)
919 return portc->audio_format;
920
921 if (!(arg & ad_format_mask[devc->model]))
922 arg = AFMT_U8;
923
924 portc->audio_format = arg;
925
926 for (i = 0; i < n; i++)
927 if (format2bits[i].format == arg)
928 {
929 if ((portc->format_bits = format2bits[i].bits) == 0)
930 return portc->audio_format = AFMT_U8; /* Was not supported */
931
932 return arg;
933 }
934 /* Still hanging here. Something must be terribly wrong */
935 portc->format_bits = 0;
936 return portc->audio_format = AFMT_U8;
937 }
938
939 static struct audio_driver ad1848_audio_driver =
940 {
941 .owner = THIS_MODULE,
942 .open = ad1848_open,
943 .close = ad1848_close,
944 .output_block = ad1848_output_block,
945 .start_input = ad1848_start_input,
946 .prepare_for_input = ad1848_prepare_for_input,
947 .prepare_for_output = ad1848_prepare_for_output,
948 .halt_io = ad1848_halt,
949 .halt_input = ad1848_halt_input,
950 .halt_output = ad1848_halt_output,
951 .trigger = ad1848_trigger,
952 .set_speed = ad1848_set_speed,
953 .set_bits = ad1848_set_bits,
954 .set_channels = ad1848_set_channels
955 };
956
957 static struct mixer_operations ad1848_mixer_operations =
958 {
959 .owner = THIS_MODULE,
960 .id = "SOUNDPORT",
961 .name = "AD1848/CS4248/CS4231",
962 .ioctl = ad1848_mixer_ioctl
963 };
964
965 static int ad1848_open(int dev, int mode)
966 {
967 ad1848_info *devc;
968 ad1848_port_info *portc;
969 unsigned long flags;
970
971 if (dev < 0 || dev >= num_audiodevs)
972 return -ENXIO;
973
974 devc = (ad1848_info *) audio_devs[dev]->devc;
975 portc = (ad1848_port_info *) audio_devs[dev]->portc;
976
977 /* here we don't have to protect against intr */
978 spin_lock(&devc->lock);
979 if (portc->open_mode || (devc->open_mode & mode))
980 {
981 spin_unlock(&devc->lock);
982 return -EBUSY;
983 }
984 devc->dual_dma = 0;
985
986 if (audio_devs[dev]->flags & DMA_DUPLEX)
987 {
988 devc->dual_dma = 1;
989 }
990 devc->intr_active = 0;
991 devc->audio_mode = 0;
992 devc->open_mode |= mode;
993 portc->open_mode = mode;
994 spin_unlock(&devc->lock);
995 ad1848_trigger(dev, 0);
996
997 if (mode & OPEN_READ)
998 devc->record_dev = dev;
999 if (mode & OPEN_WRITE)
1000 devc->playback_dev = dev;
1001 /*
1002 * Mute output until the playback really starts. This decreases clicking (hope so).
1003 */
1004 spin_lock_irqsave(&devc->lock,flags);
1005 ad_mute(devc);
1006 spin_unlock_irqrestore(&devc->lock,flags);
1007
1008 return 0;
1009 }
1010
1011 static void ad1848_close(int dev)
1012 {
1013 unsigned long flags;
1014 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
1015 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
1016
1017 devc->intr_active = 0;
1018 ad1848_halt(dev);
1019
1020 spin_lock_irqsave(&devc->lock,flags);
1021
1022 devc->audio_mode = 0;
1023 devc->open_mode &= ~portc->open_mode;
1024 portc->open_mode = 0;
1025
1026 ad_unmute(devc);
1027 spin_unlock_irqrestore(&devc->lock,flags);
1028 }
1029
1030 static void ad1848_output_block(int dev, unsigned long buf, int count, int intrflag)
1031 {
1032 unsigned long flags, cnt;
1033 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
1034 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
1035
1036 cnt = count;
1037
1038 if (portc->audio_format == AFMT_IMA_ADPCM)
1039 {
1040 cnt /= 4;
1041 }
1042 else
1043 {
1044 if (portc->audio_format & (AFMT_S16_LE | AFMT_S16_BE)) /* 16 bit data */
1045 cnt >>= 1;
1046 }
1047 if (portc->channels > 1)
1048 cnt >>= 1;
1049 cnt--;
1050
1051 if ((devc->audio_mode & PCM_ENABLE_OUTPUT) && (audio_devs[dev]->flags & DMA_AUTOMODE) &&
1052 intrflag &&
1053 cnt == devc->xfer_count)
1054 {
1055 devc->audio_mode |= PCM_ENABLE_OUTPUT;
1056 devc->intr_active = 1;
1057 return; /*
1058 * Auto DMA mode on. No need to react
1059 */
1060 }
1061 spin_lock_irqsave(&devc->lock,flags);
1062
1063 ad_write(devc, 15, (unsigned char) (cnt & 0xff));
1064 ad_write(devc, 14, (unsigned char) ((cnt >> 8) & 0xff));
1065
1066 devc->xfer_count = cnt;
1067 devc->audio_mode |= PCM_ENABLE_OUTPUT;
1068 devc->intr_active = 1;
1069 spin_unlock_irqrestore(&devc->lock,flags);
1070 }
1071
1072 static void ad1848_start_input(int dev, unsigned long buf, int count, int intrflag)
1073 {
1074 unsigned long flags, cnt;
1075 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
1076 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
1077
1078 cnt = count;
1079 if (portc->audio_format == AFMT_IMA_ADPCM)
1080 {
1081 cnt /= 4;
1082 }
1083 else
1084 {
1085 if (portc->audio_format & (AFMT_S16_LE | AFMT_S16_BE)) /* 16 bit data */
1086 cnt >>= 1;
1087 }
1088 if (portc->channels > 1)
1089 cnt >>= 1;
1090 cnt--;
1091
1092 if ((devc->audio_mode & PCM_ENABLE_INPUT) && (audio_devs[dev]->flags & DMA_AUTOMODE) &&
1093 intrflag &&
1094 cnt == devc->xfer_count)
1095 {
1096 devc->audio_mode |= PCM_ENABLE_INPUT;
1097 devc->intr_active = 1;
1098 return; /*
1099 * Auto DMA mode on. No need to react
1100 */
1101 }
1102 spin_lock_irqsave(&devc->lock,flags);
1103
1104 if (devc->model == MD_1848)
1105 {
1106 ad_write(devc, 15, (unsigned char) (cnt & 0xff));
1107 ad_write(devc, 14, (unsigned char) ((cnt >> 8) & 0xff));
1108 }
1109 else
1110 {
1111 ad_write(devc, 31, (unsigned char) (cnt & 0xff));
1112 ad_write(devc, 30, (unsigned char) ((cnt >> 8) & 0xff));
1113 }
1114
1115 ad_unmute(devc);
1116
1117 devc->xfer_count = cnt;
1118 devc->audio_mode |= PCM_ENABLE_INPUT;
1119 devc->intr_active = 1;
1120 spin_unlock_irqrestore(&devc->lock,flags);
1121 }
1122
1123 static int ad1848_prepare_for_output(int dev, int bsize, int bcount)
1124 {
1125 int timeout;
1126 unsigned char fs, old_fs, tmp = 0;
1127 unsigned long flags;
1128 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
1129 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
1130
1131 ad_mute(devc);
1132
1133 spin_lock_irqsave(&devc->lock,flags);
1134 fs = portc->speed_bits | (portc->format_bits << 5);
1135
1136 if (portc->channels > 1)
1137 fs |= 0x10;
1138
1139 ad_enter_MCE(devc); /* Enables changes to the format select reg */
1140
1141 if (devc->model == MD_1845 || devc->model == MD_1845_SSCAPE) /* Use alternate speed select registers */
1142 {
1143 fs &= 0xf0; /* Mask off the rate select bits */
1144
1145 ad_write(devc, 22, (portc->speed >> 8) & 0xff); /* Speed MSB */
1146 ad_write(devc, 23, portc->speed & 0xff); /* Speed LSB */
1147 }
1148 old_fs = ad_read(devc, 8);
1149
1150 if (devc->model == MD_4232 || devc->model >= MD_4236)
1151 {
1152 tmp = ad_read(devc, 16);
1153 ad_write(devc, 16, tmp | 0x30);
1154 }
1155 if (devc->model == MD_IWAVE)
1156 ad_write(devc, 17, 0xc2); /* Disable variable frequency select */
1157
1158 ad_write(devc, 8, fs);
1159
1160 /*
1161 * Write to I8 starts resynchronization. Wait until it completes.
1162 */
1163
1164 timeout = 0;
1165 while (timeout < 100 && inb(devc->base) != 0x80)
1166 timeout++;
1167 timeout = 0;
1168 while (timeout < 10000 && inb(devc->base) == 0x80)
1169 timeout++;
1170
1171 if (devc->model >= MD_4232)
1172 ad_write(devc, 16, tmp & ~0x30);
1173
1174 ad_leave_MCE(devc); /*
1175 * Starts the calibration process.
1176 */
1177 spin_unlock_irqrestore(&devc->lock,flags);
1178 devc->xfer_count = 0;
1179
1180 #ifndef EXCLUDE_TIMERS
1181 if (dev == timer_installed && devc->timer_running)
1182 if ((fs & 0x01) != (old_fs & 0x01))
1183 {
1184 ad1848_tmr_reprogram(dev);
1185 }
1186 #endif
1187 ad1848_halt_output(dev);
1188 return 0;
1189 }
1190
1191 static int ad1848_prepare_for_input(int dev, int bsize, int bcount)
1192 {
1193 int timeout;
1194 unsigned char fs, old_fs, tmp = 0;
1195 unsigned long flags;
1196 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
1197 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
1198
1199 if (devc->audio_mode)
1200 return 0;
1201
1202 spin_lock_irqsave(&devc->lock,flags);
1203 fs = portc->speed_bits | (portc->format_bits << 5);
1204
1205 if (portc->channels > 1)
1206 fs |= 0x10;
1207
1208 ad_enter_MCE(devc); /* Enables changes to the format select reg */
1209
1210 if ((devc->model == MD_1845) || (devc->model == MD_1845_SSCAPE)) /* Use alternate speed select registers */
1211 {
1212 fs &= 0xf0; /* Mask off the rate select bits */
1213
1214 ad_write(devc, 22, (portc->speed >> 8) & 0xff); /* Speed MSB */
1215 ad_write(devc, 23, portc->speed & 0xff); /* Speed LSB */
1216 }
1217 if (devc->model == MD_4232)
1218 {
1219 tmp = ad_read(devc, 16);
1220 ad_write(devc, 16, tmp | 0x30);
1221 }
1222 if (devc->model == MD_IWAVE)
1223 ad_write(devc, 17, 0xc2); /* Disable variable frequency select */
1224
1225 /*
1226 * If mode >= 2 (CS4231), set I28. It's the capture format register.
1227 */
1228
1229 if (devc->model != MD_1848)
1230 {
1231 old_fs = ad_read(devc, 28);
1232 ad_write(devc, 28, fs);
1233
1234 /*
1235 * Write to I28 starts resynchronization. Wait until it completes.
1236 */
1237
1238 timeout = 0;
1239 while (timeout < 100 && inb(devc->base) != 0x80)
1240 timeout++;
1241
1242 timeout = 0;
1243 while (timeout < 10000 && inb(devc->base) == 0x80)
1244 timeout++;
1245
1246 if (devc->model != MD_1848 && devc->model != MD_1845 && devc->model != MD_1845_SSCAPE)
1247 {
1248 /*
1249 * CS4231 compatible devices don't have separate sampling rate selection
1250 * register for recording an playback. The I8 register is shared so we have to
1251 * set the speed encoding bits of it too.
1252 */
1253 unsigned char tmp = portc->speed_bits | (ad_read(devc, 8) & 0xf0);
1254
1255 ad_write(devc, 8, tmp);
1256 /*
1257 * Write to I8 starts resynchronization. Wait until it completes.
1258 */
1259 timeout = 0;
1260 while (timeout < 100 && inb(devc->base) != 0x80)
1261 timeout++;
1262
1263 timeout = 0;
1264 while (timeout < 10000 && inb(devc->base) == 0x80)
1265 timeout++;
1266 }
1267 }
1268 else
1269 { /* For AD1848 set I8. */
1270
1271 old_fs = ad_read(devc, 8);
1272 ad_write(devc, 8, fs);
1273 /*
1274 * Write to I8 starts resynchronization. Wait until it completes.
1275 */
1276 timeout = 0;
1277 while (timeout < 100 && inb(devc->base) != 0x80)
1278 timeout++;
1279 timeout = 0;
1280 while (timeout < 10000 && inb(devc->base) == 0x80)
1281 timeout++;
1282 }
1283
1284 if (devc->model == MD_4232)
1285 ad_write(devc, 16, tmp & ~0x30);
1286
1287 ad_leave_MCE(devc); /*
1288 * Starts the calibration process.
1289 */
1290 spin_unlock_irqrestore(&devc->lock,flags);
1291 devc->xfer_count = 0;
1292
1293 #ifndef EXCLUDE_TIMERS
1294 if (dev == timer_installed && devc->timer_running)
1295 {
1296 if ((fs & 0x01) != (old_fs & 0x01))
1297 {
1298 ad1848_tmr_reprogram(dev);
1299 }
1300 }
1301 #endif
1302 ad1848_halt_input(dev);
1303 return 0;
1304 }
1305
1306 static void ad1848_halt(int dev)
1307 {
1308 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
1309 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
1310
1311 unsigned char bits = ad_read(devc, 9);
1312
1313 if (bits & 0x01 && (portc->open_mode & OPEN_WRITE))
1314 ad1848_halt_output(dev);
1315
1316 if (bits & 0x02 && (portc->open_mode & OPEN_READ))
1317 ad1848_halt_input(dev);
1318 devc->audio_mode = 0;
1319 }
1320
1321 static void ad1848_halt_input(int dev)
1322 {
1323 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
1324 unsigned long flags;
1325
1326 if (!(ad_read(devc, 9) & 0x02))
1327 return; /* Capture not enabled */
1328
1329 spin_lock_irqsave(&devc->lock,flags);
1330
1331 ad_mute(devc);
1332
1333 {
1334 int tmout;
1335
1336 if(!isa_dma_bridge_buggy)
1337 disable_dma(audio_devs[dev]->dmap_in->dma);
1338
1339 for (tmout = 0; tmout < 100000; tmout++)
1340 if (ad_read(devc, 11) & 0x10)
1341 break;
1342 ad_write(devc, 9, ad_read(devc, 9) & ~0x02); /* Stop capture */
1343
1344 if(!isa_dma_bridge_buggy)
1345 enable_dma(audio_devs[dev]->dmap_in->dma);
1346 devc->audio_mode &= ~PCM_ENABLE_INPUT;
1347 }
1348
1349 outb(0, io_Status(devc)); /* Clear interrupt status */
1350 outb(0, io_Status(devc)); /* Clear interrupt status */
1351
1352 devc->audio_mode &= ~PCM_ENABLE_INPUT;
1353
1354 spin_unlock_irqrestore(&devc->lock,flags);
1355 }
1356
1357 static void ad1848_halt_output(int dev)
1358 {
1359 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
1360 unsigned long flags;
1361
1362 if (!(ad_read(devc, 9) & 0x01))
1363 return; /* Playback not enabled */
1364
1365 spin_lock_irqsave(&devc->lock,flags);
1366
1367 ad_mute(devc);
1368 {
1369 int tmout;
1370
1371 if(!isa_dma_bridge_buggy)
1372 disable_dma(audio_devs[dev]->dmap_out->dma);
1373
1374 for (tmout = 0; tmout < 100000; tmout++)
1375 if (ad_read(devc, 11) & 0x10)
1376 break;
1377 ad_write(devc, 9, ad_read(devc, 9) & ~0x01); /* Stop playback */
1378
1379 if(!isa_dma_bridge_buggy)
1380 enable_dma(audio_devs[dev]->dmap_out->dma);
1381
1382 devc->audio_mode &= ~PCM_ENABLE_OUTPUT;
1383 }
1384
1385 outb((0), io_Status(devc)); /* Clear interrupt status */
1386 outb((0), io_Status(devc)); /* Clear interrupt status */
1387
1388 devc->audio_mode &= ~PCM_ENABLE_OUTPUT;
1389
1390 spin_unlock_irqrestore(&devc->lock,flags);
1391 }
1392
1393 static void ad1848_trigger(int dev, int state)
1394 {
1395 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
1396 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
1397 unsigned long flags;
1398 unsigned char tmp, old;
1399
1400 spin_lock_irqsave(&devc->lock,flags);
1401 state &= devc->audio_mode;
1402
1403 tmp = old = ad_read(devc, 9);
1404
1405 if (portc->open_mode & OPEN_READ)
1406 {
1407 if (state & PCM_ENABLE_INPUT)
1408 tmp |= 0x02;
1409 else
1410 tmp &= ~0x02;
1411 }
1412 if (portc->open_mode & OPEN_WRITE)
1413 {
1414 if (state & PCM_ENABLE_OUTPUT)
1415 tmp |= 0x01;
1416 else
1417 tmp &= ~0x01;
1418 }
1419 /* ad_mute(devc); */
1420 if (tmp != old)
1421 {
1422 ad_write(devc, 9, tmp);
1423 ad_unmute(devc);
1424 }
1425 spin_unlock_irqrestore(&devc->lock,flags);
1426 }
1427
1428 static void ad1848_init_hw(ad1848_info * devc)
1429 {
1430 int i;
1431 int *init_values;
1432
1433 /*
1434 * Initial values for the indirect registers of CS4248/AD1848.
1435 */
1436 static int init_values_a[] =
1437 {
1438 0xa8, 0xa8, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00,
1439 0x00, 0x0c, 0x02, 0x00, 0x8a, 0x01, 0x00, 0x00,
1440
1441 /* Positions 16 to 31 just for CS4231/2 and ad1845 */
1442 0x80, 0x00, 0x10, 0x10, 0x00, 0x00, 0x1f, 0x40,
1443 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
1444 };
1445
1446 static int init_values_b[] =
1447 {
1448 /*
1449 Values for the newer chips
1450 Some of the register initialization values were changed. In
1451 order to get rid of the click that preceded PCM playback,
1452 calibration was disabled on the 10th byte. On that same byte,
1453 dual DMA was enabled; on the 11th byte, ADC dithering was
1454 enabled, since that is theoretically desirable; on the 13th
1455 byte, Mode 3 was selected, to enable access to extended
1456 registers.
1457 */
1458 0xa8, 0xa8, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00,
1459 0x00, 0x00, 0x06, 0x00, 0xe0, 0x01, 0x00, 0x00,
1460 0x80, 0x00, 0x10, 0x10, 0x00, 0x00, 0x1f, 0x40,
1461 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
1462 };
1463
1464 /*
1465 * Select initialisation data
1466 */
1467
1468 init_values = init_values_a;
1469 if(devc->model >= MD_4236)
1470 init_values = init_values_b;
1471
1472 for (i = 0; i < 16; i++)
1473 ad_write(devc, i, init_values[i]);
1474
1475
1476 ad_mute(devc); /* Initialize some variables */
1477 ad_unmute(devc); /* Leave it unmuted now */
1478
1479 if (devc->model > MD_1848)
1480 {
1481 if (devc->model == MD_1845_SSCAPE)
1482 ad_write(devc, 12, ad_read(devc, 12) | 0x50);
1483 else
1484 ad_write(devc, 12, ad_read(devc, 12) | 0x40); /* Mode2 = enabled */
1485
1486 if (devc->model == MD_IWAVE)
1487 ad_write(devc, 12, 0x6c); /* Select codec mode 3 */
1488
1489 if (devc->model != MD_1845_SSCAPE)
1490 for (i = 16; i < 32; i++)
1491 ad_write(devc, i, init_values[i]);
1492
1493 if (devc->model == MD_IWAVE)
1494 ad_write(devc, 16, 0x30); /* Playback and capture counters enabled */
1495 }
1496 if (devc->model > MD_1848)
1497 {
1498 if (devc->audio_flags & DMA_DUPLEX)
1499 ad_write(devc, 9, ad_read(devc, 9) & ~0x04); /* Dual DMA mode */
1500 else
1501 ad_write(devc, 9, ad_read(devc, 9) | 0x04); /* Single DMA mode */
1502
1503 if (devc->model == MD_1845 || devc->model == MD_1845_SSCAPE)
1504 ad_write(devc, 27, ad_read(devc, 27) | 0x08); /* Alternate freq select enabled */
1505
1506 if (devc->model == MD_IWAVE)
1507 { /* Some magic Interwave specific initialization */
1508 ad_write(devc, 12, 0x6c); /* Select codec mode 3 */
1509 ad_write(devc, 16, 0x30); /* Playback and capture counters enabled */
1510 ad_write(devc, 17, 0xc2); /* Alternate feature enable */
1511 }
1512 }
1513 else
1514 {
1515 devc->audio_flags &= ~DMA_DUPLEX;
1516 ad_write(devc, 9, ad_read(devc, 9) | 0x04); /* Single DMA mode */
1517 if (soundpro)
1518 ad_write(devc, 12, ad_read(devc, 12) | 0x40); /* Mode2 = enabled */
1519 }
1520
1521 outb((0), io_Status(devc)); /* Clear pending interrupts */
1522
1523 /*
1524 * Toggle the MCE bit. It completes the initialization phase.
1525 */
1526
1527 ad_enter_MCE(devc); /* In case the bit was off */
1528 ad_leave_MCE(devc);
1529
1530 ad1848_mixer_reset(devc);
1531 }
1532
1533 int ad1848_detect(struct resource *ports, int *ad_flags, int *osp)
1534 {
1535 unsigned char tmp;
1536 ad1848_info *devc = &adev_info[nr_ad1848_devs];
1537 unsigned char tmp1 = 0xff, tmp2 = 0xff;
1538 int optiC930 = 0; /* OPTi 82C930 flag */
1539 int interwave = 0;
1540 int ad1847_flag = 0;
1541 int cs4248_flag = 0;
1542 int sscape_flag = 0;
1543 int io_base = ports->start;
1544
1545 int i;
1546
1547 DDB(printk("ad1848_detect(%x)\n", io_base));
1548
1549 if (ad_flags)
1550 {
1551 if (*ad_flags == 0x12345678)
1552 {
1553 interwave = 1;
1554 *ad_flags = 0;
1555 }
1556
1557 if (*ad_flags == 0x87654321)
1558 {
1559 sscape_flag = 1;
1560 *ad_flags = 0;
1561 }
1562
1563 if (*ad_flags == 0x12345677)
1564 {
1565 cs4248_flag = 1;
1566 *ad_flags = 0;
1567 }
1568 }
1569 if (nr_ad1848_devs >= MAX_AUDIO_DEV)
1570 {
1571 printk(KERN_ERR "ad1848 - Too many audio devices\n");
1572 return 0;
1573 }
1574 spin_lock_init(&devc->lock);
1575 devc->base = io_base;
1576 devc->irq_ok = 0;
1577 devc->timer_running = 0;
1578 devc->MCE_bit = 0x40;
1579 devc->irq = 0;
1580 devc->open_mode = 0;
1581 devc->chip_name = devc->name = "AD1848";
1582 devc->model = MD_1848; /* AD1848 or CS4248 */
1583 devc->levels = NULL;
1584 devc->debug_flag = 0;
1585
1586 /*
1587 * Check that the I/O address is in use.
1588 *
1589 * The bit 0x80 of the base I/O port is known to be 0 after the
1590 * chip has performed its power on initialization. Just assume
1591 * this has happened before the OS is starting.
1592 *
1593 * If the I/O address is unused, it typically returns 0xff.
1594 */
1595
1596 if (inb(devc->base) == 0xff)
1597 {
1598 DDB(printk("ad1848_detect: The base I/O address appears to be dead\n"));
1599 }
1600
1601 /*
1602 * Wait for the device to stop initialization
1603 */
1604
1605 DDB(printk("ad1848_detect() - step 0\n"));
1606
1607 for (i = 0; i < 10000000; i++)
1608 {
1609 unsigned char x = inb(devc->base);
1610
1611 if (x == 0xff || !(x & 0x80))
1612 break;
1613 }
1614
1615 DDB(printk("ad1848_detect() - step A\n"));
1616
1617 if (inb(devc->base) == 0x80) /* Not ready. Let's wait */
1618 ad_leave_MCE(devc);
1619
1620 if ((inb(devc->base) & 0x80) != 0x00) /* Not a AD1848 */
1621 {
1622 DDB(printk("ad1848 detect error - step A (%02x)\n", (int) inb(devc->base)));
1623 return 0;
1624 }
1625
1626 /*
1627 * Test if it's possible to change contents of the indirect registers.
1628 * Registers 0 and 1 are ADC volume registers. The bit 0x10 is read only
1629 * so try to avoid using it.
1630 */
1631
1632 DDB(printk("ad1848_detect() - step B\n"));
1633 ad_write(devc, 0, 0xaa);
1634 ad_write(devc, 1, 0x45); /* 0x55 with bit 0x10 clear */
1635
1636 if ((tmp1 = ad_read(devc, 0)) != 0xaa || (tmp2 = ad_read(devc, 1)) != 0x45)
1637 {
1638 if (tmp2 == 0x65) /* AD1847 has couple of bits hardcoded to 1 */
1639 ad1847_flag = 1;
1640 else
1641 {
1642 DDB(printk("ad1848 detect error - step B (%x/%x)\n", tmp1, tmp2));
1643 return 0;
1644 }
1645 }
1646 DDB(printk("ad1848_detect() - step C\n"));
1647 ad_write(devc, 0, 0x45);
1648 ad_write(devc, 1, 0xaa);
1649
1650 if ((tmp1 = ad_read(devc, 0)) != 0x45 || (tmp2 = ad_read(devc, 1)) != 0xaa)
1651 {
1652 if (tmp2 == 0x8a) /* AD1847 has few bits hardcoded to 1 */
1653 ad1847_flag = 1;
1654 else
1655 {
1656 DDB(printk("ad1848 detect error - step C (%x/%x)\n", tmp1, tmp2));
1657 return 0;
1658 }
1659 }
1660
1661 /*
1662 * The indirect register I12 has some read only bits. Let's
1663 * try to change them.
1664 */
1665
1666 DDB(printk("ad1848_detect() - step D\n"));
1667 tmp = ad_read(devc, 12);
1668 ad_write(devc, 12, (~tmp) & 0x0f);
1669
1670 if ((tmp & 0x0f) != ((tmp1 = ad_read(devc, 12)) & 0x0f))
1671 {
1672 DDB(printk("ad1848 detect error - step D (%x)\n", tmp1));
1673 return 0;
1674 }
1675
1676 /*
1677 * NOTE! Last 4 bits of the reg I12 tell the chip revision.
1678 * 0x01=RevB and 0x0A=RevC.
1679 */
1680
1681 /*
1682 * The original AD1848/CS4248 has just 15 indirect registers. This means
1683 * that I0 and I16 should return the same value (etc.).
1684 * However this doesn't work with CS4248. Actually it seems to be impossible
1685 * to detect if the chip is a CS4231 or CS4248.
1686 * Ensure that the Mode2 enable bit of I12 is 0. Otherwise this test fails
1687 * with CS4231.
1688 */
1689
1690 /*
1691 * OPTi 82C930 has mode2 control bit in another place. This test will fail
1692 * with it. Accept this situation as a possible indication of this chip.
1693 */
1694
1695 DDB(printk("ad1848_detect() - step F\n"));
1696 ad_write(devc, 12, 0); /* Mode2=disabled */
1697
1698 for (i = 0; i < 16; i++)
1699 {
1700 if ((tmp1 = ad_read(devc, i)) != (tmp2 = ad_read(devc, i + 16)))
1701 {
1702 DDB(printk("ad1848 detect step F(%d/%x/%x) - OPTi chip???\n", i, tmp1, tmp2));
1703 if (!ad1847_flag)
1704 optiC930 = 1;
1705 break;
1706 }
1707 }
1708
1709 /*
1710 * Try to switch the chip to mode2 (CS4231) by setting the MODE2 bit (0x40).
1711 * The bit 0x80 is always 1 in CS4248 and CS4231.
1712 */
1713
1714 DDB(printk("ad1848_detect() - step G\n"));
1715
1716 if (ad_flags && *ad_flags == 400)
1717 *ad_flags = 0;
1718 else
1719 ad_write(devc, 12, 0x40); /* Set mode2, clear 0x80 */
1720
1721
1722 if (ad_flags)
1723 *ad_flags = 0;
1724
1725 tmp1 = ad_read(devc, 12);
1726 if (tmp1 & 0x80)
1727 {
1728 if (ad_flags)
1729 *ad_flags |= AD_F_CS4248;
1730
1731 devc->chip_name = "CS4248"; /* Our best knowledge just now */
1732 }
1733 if (optiC930 || (tmp1 & 0xc0) == (0x80 | 0x40))
1734 {
1735 /*
1736 * CS4231 detected - is it?
1737 *
1738 * Verify that setting I0 doesn't change I16.
1739 */
1740
1741 DDB(printk("ad1848_detect() - step H\n"));
1742 ad_write(devc, 16, 0); /* Set I16 to known value */
1743
1744 ad_write(devc, 0, 0x45);
1745 if ((tmp1 = ad_read(devc, 16)) != 0x45) /* No change -> CS4231? */
1746 {
1747 ad_write(devc, 0, 0xaa);
1748 if ((tmp1 = ad_read(devc, 16)) == 0xaa) /* Rotten bits? */
1749 {
1750 DDB(printk("ad1848 detect error - step H(%x)\n", tmp1));
1751 return 0;
1752 }
1753
1754 /*
1755 * Verify that some bits of I25 are read only.
1756 */
1757
1758 DDB(printk("ad1848_detect() - step I\n"));
1759 tmp1 = ad_read(devc, 25); /* Original bits */
1760 ad_write(devc, 25, ~tmp1); /* Invert all bits */
1761 if ((ad_read(devc, 25) & 0xe7) == (tmp1 & 0xe7))
1762 {
1763 int id;
1764
1765 /*
1766 * It's at least CS4231
1767 */
1768
1769 devc->chip_name = "CS4231";
1770 devc->model = MD_4231;
1771
1772 /*
1773 * It could be an AD1845 or CS4231A as well.
1774 * CS4231 and AD1845 report the same revision info in I25
1775 * while the CS4231A reports different.
1776 */
1777
1778 id = ad_read(devc, 25);
1779 if ((id & 0xe7) == 0x80) /* Device busy??? */
1780 id = ad_read(devc, 25);
1781 if ((id & 0xe7) == 0x80) /* Device still busy??? */
1782 id = ad_read(devc, 25);
1783 DDB(printk("ad1848_detect() - step J (%02x/%02x)\n", id, ad_read(devc, 25)));
1784
1785 if ((id & 0xe7) == 0x80) {
1786 /*
1787 * It must be a CS4231 or AD1845. The register I23 of
1788 * CS4231 is undefined and it appears to be read only.
1789 * AD1845 uses I23 for setting sample rate. Assume
1790 * the chip is AD1845 if I23 is changeable.
1791 */
1792
1793 unsigned char tmp = ad_read(devc, 23);
1794 ad_write(devc, 23, ~tmp);
1795
1796 if (interwave)
1797 {
1798 devc->model = MD_IWAVE;
1799 devc->chip_name = "IWave";
1800 }
1801 else if (ad_read(devc, 23) != tmp) /* AD1845 ? */
1802 {
1803 devc->chip_name = "AD1845";
1804 devc->model = MD_1845;
1805 }
1806 else if (cs4248_flag)
1807 {
1808 if (ad_flags)
1809 *ad_flags |= AD_F_CS4248;
1810 devc->chip_name = "CS4248";
1811 devc->model = MD_1848;
1812 ad_write(devc, 12, ad_read(devc, 12) & ~0x40); /* Mode2 off */
1813 }
1814 ad_write(devc, 23, tmp); /* Restore */
1815 }
1816 else
1817 {
1818 switch (id & 0x1f) {
1819 case 3: /* CS4236/CS4235/CS42xB/CS4239 */
1820 {
1821 int xid;
1822 ad_write(devc, 12, ad_read(devc, 12) | 0x60); /* switch to mode 3 */
1823 ad_write(devc, 23, 0x9c); /* select extended register 25 */
1824 xid = inb(io_Indexed_Data(devc));
1825 ad_write(devc, 12, ad_read(devc, 12) & ~0x60); /* back to mode 0 */
1826 switch (xid & 0x1f)
1827 {
1828 case 0x00:
1829 devc->chip_name = "CS4237B(B)";
1830 devc->model = MD_42xB;
1831 break;
1832 case 0x08:
1833 /* Seems to be a 4238 ?? */
1834 devc->chip_name = "CS4238";
1835 devc->model = MD_42xB;
1836 break;
1837 case 0x09:
1838 devc->chip_name = "CS4238B";
1839 devc->model = MD_42xB;
1840 break;
1841 case 0x0b:
1842 devc->chip_name = "CS4236B";
1843 devc->model = MD_4236;
1844 break;
1845 case 0x10:
1846 devc->chip_name = "CS4237B";
1847 devc->model = MD_42xB;
1848 break;
1849 case 0x1d:
1850 devc->chip_name = "CS4235";
1851 devc->model = MD_4235;
1852 break;
1853 case 0x1e:
1854 devc->chip_name = "CS4239";
1855 devc->model = MD_4239;
1856 break;
1857 default:
1858 printk("Chip ident is %X.\n", xid&0x1F);
1859 devc->chip_name = "CS42xx";
1860 devc->model = MD_4232;
1861 break;
1862 }
1863 }
1864 break;
1865
1866 case 2: /* CS4232/CS4232A */
1867 devc->chip_name = "CS4232";
1868 devc->model = MD_4232;
1869 break;
1870
1871 case 0:
1872 if ((id & 0xe0) == 0xa0)
1873 {
1874 devc->chip_name = "CS4231A";
1875 devc->model = MD_4231A;
1876 }
1877 else
1878 {
1879 devc->chip_name = "CS4321";
1880 devc->model = MD_4231;
1881 }
1882 break;
1883
1884 default: /* maybe */
1885 DDB(printk("ad1848: I25 = %02x/%02x\n", ad_read(devc, 25), ad_read(devc, 25) & 0xe7));
1886 if (optiC930)
1887 {
1888 devc->chip_name = "82C930";
1889 devc->model = MD_C930;
1890 }
1891 else
1892 {
1893 devc->chip_name = "CS4231";
1894 devc->model = MD_4231;
1895 }
1896 }
1897 }
1898 }
1899 ad_write(devc, 25, tmp1); /* Restore bits */
1900
1901 DDB(printk("ad1848_detect() - step K\n"));
1902 }
1903 } else if (tmp1 == 0x0a) {
1904 /*
1905 * Is it perhaps a SoundPro CMI8330?
1906 * If so, then we should be able to change indirect registers
1907 * greater than I15 after activating MODE2, even though reading
1908 * back I12 does not show it.
1909 */
1910
1911 /*
1912 * Let's try comparing register values
1913 */
1914 for (i = 0; i < 16; i++) {
1915 if ((tmp1 = ad_read(devc, i)) != (tmp2 = ad_read(devc, i + 16))) {
1916 DDB(printk("ad1848 detect step H(%d/%x/%x) - SoundPro chip?\n", i, tmp1, tmp2));
1917 soundpro = 1;
1918 devc->chip_name = "SoundPro CMI 8330";
1919 break;
1920 }
1921 }
1922 }
1923
1924 DDB(printk("ad1848_detect() - step L\n"));
1925 if (ad_flags)
1926 {
1927 if (devc->model != MD_1848)
1928 *ad_flags |= AD_F_CS4231;
1929 }
1930 DDB(printk("ad1848_detect() - Detected OK\n"));
1931
1932 if (devc->model == MD_1848 && ad1847_flag)
1933 devc->chip_name = "AD1847";
1934
1935
1936 if (sscape_flag == 1)
1937 devc->model = MD_1845_SSCAPE;
1938
1939 return 1;
1940 }
1941
1942 int ad1848_init (char *name, struct resource *ports, int irq, int dma_playback,
1943 int dma_capture, int share_dma, int *osp, struct module *owner)
1944 {
1945 /*
1946 * NOTE! If irq < 0, there is another driver which has allocated the IRQ
1947 * so that this driver doesn't need to allocate/deallocate it.
1948 * The actually used IRQ is ABS(irq).
1949 */
1950
1951 int my_dev;
1952 char dev_name[100];
1953 int e;
1954
1955 ad1848_info *devc = &adev_info[nr_ad1848_devs];
1956
1957 ad1848_port_info *portc = NULL;
1958
1959 devc->irq = (irq > 0) ? irq : 0;
1960 devc->open_mode = 0;
1961 devc->timer_ticks = 0;
1962 devc->dma1 = dma_playback;
1963 devc->dma2 = dma_capture;
1964 devc->subtype = cfg.card_subtype;
1965 devc->audio_flags = DMA_AUTOMODE;
1966 devc->playback_dev = devc->record_dev = 0;
1967 if (name != NULL)
1968 devc->name = name;
1969
1970 if (name != NULL && name[0] != 0)
1971 sprintf(dev_name,
1972 "%s (%s)", name, devc->chip_name);
1973 else
1974 sprintf(dev_name,
1975 "Generic audio codec (%s)", devc->chip_name);
1976
1977 rename_region(ports, devc->name);
1978
1979 conf_printf2(dev_name, devc->base, devc->irq, dma_playback, dma_capture);
1980
1981 if (devc->model == MD_1848 || devc->model == MD_C930)
1982 devc->audio_flags |= DMA_HARDSTOP;
1983
1984 if (devc->model > MD_1848)
1985 {
1986 if (devc->dma1 == devc->dma2 || devc->dma2 == -1 || devc->dma1 == -1)
1987 devc->audio_flags &= ~DMA_DUPLEX;
1988 else
1989 devc->audio_flags |= DMA_DUPLEX;
1990 }
1991
1992 portc = kmalloc(sizeof(ad1848_port_info), GFP_KERNEL);
1993 if(portc==NULL) {
1994 release_region(devc->base, 4);
1995 return -1;
1996 }
1997
1998 if ((my_dev = sound_install_audiodrv(AUDIO_DRIVER_VERSION,
1999 dev_name,
2000 &ad1848_audio_driver,
2001 sizeof(struct audio_driver),
2002 devc->audio_flags,
2003 ad_format_mask[devc->model],
2004 devc,
2005 dma_playback,
2006 dma_capture)) < 0)
2007 {
2008 release_region(devc->base, 4);
2009 kfree(portc);
2010 return -1;
2011 }
2012
2013 audio_devs[my_dev]->portc = portc;
2014 audio_devs[my_dev]->mixer_dev = -1;
2015 if (owner)
2016 audio_devs[my_dev]->d->owner = owner;
2017 memset((char *) portc, 0, sizeof(*portc));
2018
2019 nr_ad1848_devs++;
2020
2021 ad1848_init_hw(devc);
2022
2023 if (irq > 0)
2024 {
2025 devc->dev_no = my_dev;
2026 if (request_irq(devc->irq, adintr, 0, devc->name,
2027 (void *)(long)my_dev) < 0)
2028 {
2029 printk(KERN_WARNING "ad1848: Unable to allocate IRQ\n");
2030 /* Don't free it either then.. */
2031 devc->irq = 0;
2032 }
2033 if (capabilities[devc->model].flags & CAP_F_TIMER)
2034 {
2035 #ifndef CONFIG_SMP
2036 int x;
2037 unsigned char tmp = ad_read(devc, 16);
2038 #endif
2039
2040 devc->timer_ticks = 0;
2041
2042 ad_write(devc, 21, 0x00); /* Timer MSB */
2043 ad_write(devc, 20, 0x10); /* Timer LSB */
2044 #ifndef CONFIG_SMP
2045 ad_write(devc, 16, tmp | 0x40); /* Enable timer */
2046 for (x = 0; x < 100000 && devc->timer_ticks == 0; x++);
2047 ad_write(devc, 16, tmp & ~0x40); /* Disable timer */
2048
2049 if (devc->timer_ticks == 0)
2050 printk(KERN_WARNING "ad1848: Interrupt test failed (IRQ%d)\n", irq);
2051 else
2052 {
2053 DDB(printk("Interrupt test OK\n"));
2054 devc->irq_ok = 1;
2055 }
2056 #else
2057 devc->irq_ok = 1;
2058 #endif
2059 }
2060 else
2061 devc->irq_ok = 1; /* Couldn't test. assume it's OK */
2062 } else if (irq < 0)
2063 irq2dev[-irq] = devc->dev_no = my_dev;
2064
2065 #ifndef EXCLUDE_TIMERS
2066 if ((capabilities[devc->model].flags & CAP_F_TIMER) &&
2067 devc->irq_ok)
2068 ad1848_tmr_install(my_dev);
2069 #endif
2070
2071 if (!share_dma)
2072 {
2073 if (sound_alloc_dma(dma_playback, devc->name))
2074 printk(KERN_WARNING "ad1848.c: Can't allocate DMA%d\n", dma_playback);
2075
2076 if (dma_capture != dma_playback)
2077 if (sound_alloc_dma(dma_capture, devc->name))
2078 printk(KERN_WARNING "ad1848.c: Can't allocate DMA%d\n", dma_capture);
2079 }
2080
2081 if ((e = sound_install_mixer(MIXER_DRIVER_VERSION,
2082 dev_name,
2083 &ad1848_mixer_operations,
2084 sizeof(struct mixer_operations),
2085 devc)) >= 0)
2086 {
2087 audio_devs[my_dev]->mixer_dev = e;
2088 if (owner)
2089 mixer_devs[e]->owner = owner;
2090 }
2091 return my_dev;
2092 }
2093
2094 int ad1848_control(int cmd, int arg)
2095 {
2096 ad1848_info *devc;
2097 unsigned long flags;
2098
2099 if (nr_ad1848_devs < 1)
2100 return -ENODEV;
2101
2102 devc = &adev_info[nr_ad1848_devs - 1];
2103
2104 switch (cmd)
2105 {
2106 case AD1848_SET_XTAL: /* Change clock frequency of AD1845 (only ) */
2107 if (devc->model != MD_1845 && devc->model != MD_1845_SSCAPE)
2108 return -EINVAL;
2109 spin_lock_irqsave(&devc->lock,flags);
2110 ad_enter_MCE(devc);
2111 ad_write(devc, 29, (ad_read(devc, 29) & 0x1f) | (arg << 5));
2112 ad_leave_MCE(devc);
2113 spin_unlock_irqrestore(&devc->lock,flags);
2114 break;
2115
2116 case AD1848_MIXER_REROUTE:
2117 {
2118 int o = (arg >> 8) & 0xff;
2119 int n = arg & 0xff;
2120
2121 if (o < 0 || o >= SOUND_MIXER_NRDEVICES)
2122 return -EINVAL;
2123
2124 if (!(devc->supported_devices & (1 << o)) &&
2125 !(devc->supported_rec_devices & (1 << o)))
2126 return -EINVAL;
2127
2128 if (n == SOUND_MIXER_NONE)
2129 { /* Just hide this control */
2130 ad1848_mixer_set(devc, o, 0); /* Shut up it */
2131 devc->supported_devices &= ~(1 << o);
2132 devc->supported_rec_devices &= ~(1 << o);
2133 break;
2134 }
2135
2136 /* Make the mixer control identified by o to appear as n */
2137 if (n < 0 || n >= SOUND_MIXER_NRDEVICES)
2138 return -EINVAL;
2139
2140 devc->mixer_reroute[n] = o; /* Rename the control */
2141 if (devc->supported_devices & (1 << o))
2142 devc->supported_devices |= (1 << n);
2143 if (devc->supported_rec_devices & (1 << o))
2144 devc->supported_rec_devices |= (1 << n);
2145
2146 devc->supported_devices &= ~(1 << o);
2147 devc->supported_rec_devices &= ~(1 << o);
2148 }
2149 break;
2150 }
2151 return 0;
2152 }
2153
2154 void ad1848_unload(int io_base, int irq, int dma_playback, int dma_capture, int share_dma)
2155 {
2156 int i, mixer, dev = 0;
2157 ad1848_info *devc = NULL;
2158
2159 for (i = 0; devc == NULL && i < nr_ad1848_devs; i++)
2160 {
2161 if (adev_info[i].base == io_base)
2162 {
2163 devc = &adev_info[i];
2164 dev = devc->dev_no;
2165 }
2166 }
2167
2168 if (devc != NULL)
2169 {
2170 kfree(audio_devs[dev]->portc);
2171 release_region(devc->base, 4);
2172
2173 if (!share_dma)
2174 {
2175 if (devc->irq > 0) /* There is no point in freeing irq, if it wasn't allocated */
2176 free_irq(devc->irq, (void *)(long)devc->dev_no);
2177
2178 sound_free_dma(dma_playback);
2179
2180 if (dma_playback != dma_capture)
2181 sound_free_dma(dma_capture);
2182
2183 }
2184 mixer = audio_devs[devc->dev_no]->mixer_dev;
2185 if(mixer>=0)
2186 sound_unload_mixerdev(mixer);
2187
2188 nr_ad1848_devs--;
2189 for ( ; i < nr_ad1848_devs ; i++)
2190 adev_info[i] = adev_info[i+1];
2191 }
2192 else
2193 printk(KERN_ERR "ad1848: Can't find device to be unloaded. Base=%x\n", io_base);
2194 }
2195
2196 static irqreturn_t adintr(int irq, void *dev_id)
2197 {
2198 unsigned char status;
2199 ad1848_info *devc;
2200 int dev;
2201 int alt_stat = 0xff;
2202 unsigned char c930_stat = 0;
2203 int cnt = 0;
2204
2205 dev = (long)dev_id;
2206 devc = (ad1848_info *) audio_devs[dev]->devc;
2207
2208 interrupt_again: /* Jump back here if int status doesn't reset */
2209
2210 status = inb(io_Status(devc));
2211
2212 if (status == 0x80)
2213 printk(KERN_DEBUG "adintr: Why?\n");
2214 if (devc->model == MD_1848)
2215 outb((0), io_Status(devc)); /* Clear interrupt status */
2216
2217 if (status & 0x01)
2218 {
2219 if (devc->model == MD_C930)
2220 { /* 82C930 has interrupt status register in MAD16 register MC11 */
2221
2222 spin_lock(&devc->lock);
2223
2224 /* 0xe0e is C930 address port
2225 * 0xe0f is C930 data port
2226 */
2227 outb(11, 0xe0e);
2228 c930_stat = inb(0xe0f);
2229 outb((~c930_stat), 0xe0f);
2230
2231 spin_unlock(&devc->lock);
2232
2233 alt_stat = (c930_stat << 2) & 0x30;
2234 }
2235 else if (devc->model != MD_1848)
2236 {
2237 spin_lock(&devc->lock);
2238 alt_stat = ad_read(devc, 24);
2239 ad_write(devc, 24, ad_read(devc, 24) & ~alt_stat); /* Selective ack */
2240 spin_unlock(&devc->lock);
2241 }
2242
2243 if ((devc->open_mode & OPEN_READ) && (devc->audio_mode & PCM_ENABLE_INPUT) && (alt_stat & 0x20))
2244 {
2245 DMAbuf_inputintr(devc->record_dev);
2246 }
2247 if ((devc->open_mode & OPEN_WRITE) && (devc->audio_mode & PCM_ENABLE_OUTPUT) &&
2248 (alt_stat & 0x10))
2249 {
2250 DMAbuf_outputintr(devc->playback_dev, 1);
2251 }
2252 if (devc->model != MD_1848 && (alt_stat & 0x40)) /* Timer interrupt */
2253 {
2254 devc->timer_ticks++;
2255 #ifndef EXCLUDE_TIMERS
2256 if (timer_installed == dev && devc->timer_running)
2257 sound_timer_interrupt();
2258 #endif
2259 }
2260 }
2261 /*
2262 * Sometimes playback or capture interrupts occur while a timer interrupt
2263 * is being handled. The interrupt will not be retriggered if we don't
2264 * handle it now. Check if an interrupt is still pending and restart
2265 * the handler in this case.
2266 */
2267 if (inb(io_Status(devc)) & 0x01 && cnt++ < 4)
2268 {
2269 goto interrupt_again;
2270 }
2271 return IRQ_HANDLED;
2272 }
2273
2274 /*
2275 * Experimental initialization sequence for the integrated sound system
2276 * of the Compaq Deskpro M.
2277 */
2278
2279 static int init_deskpro_m(struct address_info *hw_config)
2280 {
2281 unsigned char tmp;
2282
2283 if ((tmp = inb(0xc44)) == 0xff)
2284 {
2285 DDB(printk("init_deskpro_m: Dead port 0xc44\n"));
2286 return 0;
2287 }
2288
2289 outb(0x10, 0xc44);
2290 outb(0x40, 0xc45);
2291 outb(0x00, 0xc46);
2292 outb(0xe8, 0xc47);
2293 outb(0x14, 0xc44);
2294 outb(0x40, 0xc45);
2295 outb(0x00, 0xc46);
2296 outb(0xe8, 0xc47);
2297 outb(0x10, 0xc44);
2298
2299 return 1;
2300 }
2301
2302 /*
2303 * Experimental initialization sequence for the integrated sound system
2304 * of Compaq Deskpro XL.
2305 */
2306
2307 static int init_deskpro(struct address_info *hw_config)
2308 {
2309 unsigned char tmp;
2310
2311 if ((tmp = inb(0xc44)) == 0xff)
2312 {
2313 DDB(printk("init_deskpro: Dead port 0xc44\n"));
2314 return 0;
2315 }
2316 outb((tmp | 0x04), 0xc44); /* Select bank 1 */
2317 if (inb(0xc44) != 0x04)
2318 {
2319 DDB(printk("init_deskpro: Invalid bank1 signature in port 0xc44\n"));
2320 return 0;
2321 }
2322 /*
2323 * OK. It looks like a Deskpro so let's proceed.
2324 */
2325
2326 /*
2327 * I/O port 0xc44 Audio configuration register.
2328 *
2329 * bits 0xc0: Audio revision bits
2330 * 0x00 = Compaq Business Audio
2331 * 0x40 = MS Sound System Compatible (reset default)
2332 * 0x80 = Reserved
2333 * 0xc0 = Reserved
2334 * bit 0x20: No Wait State Enable
2335 * 0x00 = Disabled (reset default, DMA mode)
2336 * 0x20 = Enabled (programmed I/O mode)
2337 * bit 0x10: MS Sound System Decode Enable
2338 * 0x00 = Decoding disabled (reset default)
2339 * 0x10 = Decoding enabled
2340 * bit 0x08: FM Synthesis Decode Enable
2341 * 0x00 = Decoding Disabled (reset default)
2342 * 0x08 = Decoding enabled
2343 * bit 0x04 Bank select
2344 * 0x00 = Bank 0
2345 * 0x04 = Bank 1
2346 * bits 0x03 MSS Base address
2347 * 0x00 = 0x530 (reset default)
2348 * 0x01 = 0x604
2349 * 0x02 = 0xf40
2350 * 0x03 = 0xe80
2351 */
2352
2353 #ifdef DEBUGXL
2354 /* Debug printing */
2355 printk("Port 0xc44 (before): ");
2356 outb((tmp & ~0x04), 0xc44);
2357 printk("%02x ", inb(0xc44));
2358 outb((tmp | 0x04), 0xc44);
2359 printk("%02x\n", inb(0xc44));
2360 #endif
2361
2362 /* Set bank 1 of the register */
2363 tmp = 0x58; /* MSS Mode, MSS&FM decode enabled */
2364
2365 switch (hw_config->io_base)
2366 {
2367 case 0x530:
2368 tmp |= 0x00;
2369 break;
2370 case 0x604:
2371 tmp |= 0x01;
2372 break;
2373 case 0xf40:
2374 tmp |= 0x02;
2375 break;
2376 case 0xe80:
2377 tmp |= 0x03;
2378 break;
2379 default:
2380 DDB(printk("init_deskpro: Invalid MSS port %x\n", hw_config->io_base));
2381 return 0;
2382 }
2383 outb((tmp & ~0x04), 0xc44); /* Write to bank=0 */
2384
2385 #ifdef DEBUGXL
2386 /* Debug printing */
2387 printk("Port 0xc44 (after): ");
2388 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2389 printk("%02x ", inb(0xc44));
2390 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2391 printk("%02x\n", inb(0xc44));
2392 #endif
2393
2394 /*
2395 * I/O port 0xc45 FM Address Decode/MSS ID Register.
2396 *
2397 * bank=0, bits 0xfe: FM synthesis Decode Compare bits 7:1 (default=0x88)
2398 * bank=0, bit 0x01: SBIC Power Control Bit
2399 * 0x00 = Powered up
2400 * 0x01 = Powered down
2401 * bank=1, bits 0xfc: MSS ID (default=0x40)
2402 */
2403
2404 #ifdef DEBUGXL
2405 /* Debug printing */
2406 printk("Port 0xc45 (before): ");
2407 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2408 printk("%02x ", inb(0xc45));
2409 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2410 printk("%02x\n", inb(0xc45));
2411 #endif
2412
2413 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2414 outb((0x88), 0xc45); /* FM base 7:0 = 0x88 */
2415 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2416 outb((0x10), 0xc45); /* MSS ID = 0x10 (MSS port returns 0x04) */
2417
2418 #ifdef DEBUGXL
2419 /* Debug printing */
2420 printk("Port 0xc45 (after): ");
2421 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2422 printk("%02x ", inb(0xc45));
2423 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2424 printk("%02x\n", inb(0xc45));
2425 #endif
2426
2427
2428 /*
2429 * I/O port 0xc46 FM Address Decode/Address ASIC Revision Register.
2430 *
2431 * bank=0, bits 0xff: FM synthesis Decode Compare bits 15:8 (default=0x03)
2432 * bank=1, bits 0xff: Audio addressing ASIC id
2433 */
2434
2435 #ifdef DEBUGXL
2436 /* Debug printing */
2437 printk("Port 0xc46 (before): ");
2438 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2439 printk("%02x ", inb(0xc46));
2440 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2441 printk("%02x\n", inb(0xc46));
2442 #endif
2443
2444 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2445 outb((0x03), 0xc46); /* FM base 15:8 = 0x03 */
2446 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2447 outb((0x11), 0xc46); /* ASIC ID = 0x11 */
2448
2449 #ifdef DEBUGXL
2450 /* Debug printing */
2451 printk("Port 0xc46 (after): ");
2452 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2453 printk("%02x ", inb(0xc46));
2454 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2455 printk("%02x\n", inb(0xc46));
2456 #endif
2457
2458 /*
2459 * I/O port 0xc47 FM Address Decode Register.
2460 *
2461 * bank=0, bits 0xff: Decode enable selection for various FM address bits
2462 * bank=1, bits 0xff: Reserved
2463 */
2464
2465 #ifdef DEBUGXL
2466 /* Debug printing */
2467 printk("Port 0xc47 (before): ");
2468 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2469 printk("%02x ", inb(0xc47));
2470 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2471 printk("%02x\n", inb(0xc47));
2472 #endif
2473
2474 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2475 outb((0x7c), 0xc47); /* FM decode enable bits = 0x7c */
2476 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2477 outb((0x00), 0xc47); /* Reserved bank1 = 0x00 */
2478
2479 #ifdef DEBUGXL
2480 /* Debug printing */
2481 printk("Port 0xc47 (after): ");
2482 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2483 printk("%02x ", inb(0xc47));
2484 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2485 printk("%02x\n", inb(0xc47));
2486 #endif
2487
2488 /*
2489 * I/O port 0xc6f = Audio Disable Function Register
2490 */
2491
2492 #ifdef DEBUGXL
2493 printk("Port 0xc6f (before) = %02x\n", inb(0xc6f));
2494 #endif
2495
2496 outb((0x80), 0xc6f);
2497
2498 #ifdef DEBUGXL
2499 printk("Port 0xc6f (after) = %02x\n", inb(0xc6f));
2500 #endif
2501
2502 return 1;
2503 }
2504
2505 int probe_ms_sound(struct address_info *hw_config, struct resource *ports)
2506 {
2507 unsigned char tmp;
2508
2509 DDB(printk("Entered probe_ms_sound(%x, %d)\n", hw_config->io_base, hw_config->card_subtype));
2510
2511 if (hw_config->card_subtype == 1) /* Has no IRQ/DMA registers */
2512 {
2513 /* check_opl3(0x388, hw_config); */
2514 return ad1848_detect(ports, NULL, hw_config->osp);
2515 }
2516
2517 if (deskpro_xl && hw_config->card_subtype == 2) /* Compaq Deskpro XL */
2518 {
2519 if (!init_deskpro(hw_config))
2520 return 0;
2521 }
2522
2523 if (deskpro_m) /* Compaq Deskpro M */
2524 {
2525 if (!init_deskpro_m(hw_config))
2526 return 0;
2527 }
2528
2529 /*
2530 * Check if the IO port returns valid signature. The original MS Sound
2531 * system returns 0x04 while some cards (AudioTrix Pro for example)
2532 * return 0x00 or 0x0f.
2533 */
2534
2535 if ((tmp = inb(hw_config->io_base + 3)) == 0xff) /* Bus float */
2536 {
2537 int ret;
2538
2539 DDB(printk("I/O address is inactive (%x)\n", tmp));
2540 if (!(ret = ad1848_detect(ports, NULL, hw_config->osp)))
2541 return 0;
2542 return 1;
2543 }
2544 DDB(printk("MSS signature = %x\n", tmp & 0x3f));
2545 if ((tmp & 0x3f) != 0x04 &&
2546 (tmp & 0x3f) != 0x0f &&
2547 (tmp & 0x3f) != 0x00)
2548 {
2549 int ret;
2550
2551 MDB(printk(KERN_ERR "No MSS signature detected on port 0x%x (0x%x)\n", hw_config->io_base, (int) inb(hw_config->io_base + 3)));
2552 DDB(printk("Trying to detect codec anyway but IRQ/DMA may not work\n"));
2553 if (!(ret = ad1848_detect(ports, NULL, hw_config->osp)))
2554 return 0;
2555
2556 hw_config->card_subtype = 1;
2557 return 1;
2558 }
2559 if ((hw_config->irq != 5) &&
2560 (hw_config->irq != 7) &&
2561 (hw_config->irq != 9) &&
2562 (hw_config->irq != 10) &&
2563 (hw_config->irq != 11) &&
2564 (hw_config->irq != 12))
2565 {
2566 printk(KERN_ERR "MSS: Bad IRQ %d\n", hw_config->irq);
2567 return 0;
2568 }
2569 if (hw_config->dma != 0 && hw_config->dma != 1 && hw_config->dma != 3)
2570 {
2571 printk(KERN_ERR "MSS: Bad DMA %d\n", hw_config->dma);
2572 return 0;
2573 }
2574 /*
2575 * Check that DMA0 is not in use with a 8 bit board.
2576 */
2577
2578 if (hw_config->dma == 0 && inb(hw_config->io_base + 3) & 0x80)
2579 {
2580 printk(KERN_ERR "MSS: Can't use DMA0 with a 8 bit card/slot\n");
2581 return 0;
2582 }
2583 if (hw_config->irq > 7 && hw_config->irq != 9 && inb(hw_config->io_base + 3) & 0x80)
2584 {
2585 printk(KERN_ERR "MSS: Can't use IRQ%d with a 8 bit card/slot\n", hw_config->irq);
2586 return 0;
2587 }
2588 return ad1848_detect(ports, NULL, hw_config->osp);
2589 }
2590
2591 void attach_ms_sound(struct address_info *hw_config, struct resource *ports, struct module *owner)
2592 {
2593 static signed char interrupt_bits[12] =
2594 {
2595 -1, -1, -1, -1, -1, 0x00, -1, 0x08, -1, 0x10, 0x18, 0x20
2596 };
2597 signed char bits;
2598 char dma2_bit = 0;
2599
2600 static char dma_bits[4] =
2601 {
2602 1, 2, 0, 3
2603 };
2604
2605 int config_port = hw_config->io_base + 0;
2606 int version_port = hw_config->io_base + 3;
2607 int dma = hw_config->dma;
2608 int dma2 = hw_config->dma2;
2609
2610 if (hw_config->card_subtype == 1) /* Has no IRQ/DMA registers */
2611 {
2612 hw_config->slots[0] = ad1848_init("MS Sound System", ports,
2613 hw_config->irq,
2614 hw_config->dma,
2615 hw_config->dma2, 0,
2616 hw_config->osp,
2617 owner);
2618 return;
2619 }
2620 /*
2621 * Set the IRQ and DMA addresses.
2622 */
2623
2624 bits = interrupt_bits[hw_config->irq];
2625 if (bits == -1)
2626 {
2627 printk(KERN_ERR "MSS: Bad IRQ %d\n", hw_config->irq);
2628 release_region(ports->start, 4);
2629 release_region(ports->start - 4, 4);
2630 return;
2631 }
2632 outb((bits | 0x40), config_port);
2633 if ((inb(version_port) & 0x40) == 0)
2634 printk(KERN_ERR "[MSS: IRQ Conflict?]\n");
2635
2636 /*
2637 * Handle the capture DMA channel
2638 */
2639
2640 if (dma2 != -1 && dma2 != dma)
2641 {
2642 if (!((dma == 0 && dma2 == 1) ||
2643 (dma == 1 && dma2 == 0) ||
2644 (dma == 3 && dma2 == 0)))
2645 { /* Unsupported combination. Try to swap channels */
2646 int tmp = dma;
2647
2648 dma = dma2;
2649 dma2 = tmp;
2650 }
2651 if ((dma == 0 && dma2 == 1) ||
2652 (dma == 1 && dma2 == 0) ||
2653 (dma == 3 && dma2 == 0))
2654 {
2655 dma2_bit = 0x04; /* Enable capture DMA */
2656 }
2657 else
2658 {
2659 printk(KERN_WARNING "MSS: Invalid capture DMA\n");
2660 dma2 = dma;
2661 }
2662 }
2663 else
2664 {
2665 dma2 = dma;
2666 }
2667
2668 hw_config->dma = dma;
2669 hw_config->dma2 = dma2;
2670
2671 outb((bits | dma_bits[dma] | dma2_bit), config_port); /* Write IRQ+DMA setup */
2672
2673 hw_config->slots[0] = ad1848_init("MS Sound System", ports,
2674 hw_config->irq,
2675 dma, dma2, 0,
2676 hw_config->osp,
2677 THIS_MODULE);
2678 }
2679
2680 void unload_ms_sound(struct address_info *hw_config)
2681 {
2682 ad1848_unload(hw_config->io_base + 4,
2683 hw_config->irq,
2684 hw_config->dma,
2685 hw_config->dma2, 0);
2686 sound_unload_audiodev(hw_config->slots[0]);
2687 release_region(hw_config->io_base, 4);
2688 }
2689
2690 #ifndef EXCLUDE_TIMERS
2691
2692 /*
2693 * Timer stuff (for /dev/music).
2694 */
2695
2696 static unsigned int current_interval;
2697
2698 static unsigned int ad1848_tmr_start(int dev, unsigned int usecs)
2699 {
2700 unsigned long flags;
2701 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
2702 unsigned long xtal_nsecs; /* nanoseconds per xtal oscillator tick */
2703 unsigned long divider;
2704
2705 spin_lock_irqsave(&devc->lock,flags);
2706
2707 /*
2708 * Length of the timer interval (in nanoseconds) depends on the
2709 * selected crystal oscillator. Check this from bit 0x01 of I8.
2710 *
2711 * AD1845 has just one oscillator which has cycle time of 10.050 us
2712 * (when a 24.576 MHz xtal oscillator is used).
2713 *
2714 * Convert requested interval to nanoseconds before computing
2715 * the timer divider.
2716 */
2717
2718 if (devc->model == MD_1845 || devc->model == MD_1845_SSCAPE)
2719 xtal_nsecs = 10050;
2720 else if (ad_read(devc, 8) & 0x01)
2721 xtal_nsecs = 9920;
2722 else
2723 xtal_nsecs = 9969;
2724
2725 divider = (usecs * 1000 + xtal_nsecs / 2) / xtal_nsecs;
2726
2727 if (divider < 100) /* Don't allow shorter intervals than about 1ms */
2728 divider = 100;
2729
2730 if (divider > 65535) /* Overflow check */
2731 divider = 65535;
2732
2733 ad_write(devc, 21, (divider >> 8) & 0xff); /* Set upper bits */
2734 ad_write(devc, 20, divider & 0xff); /* Set lower bits */
2735 ad_write(devc, 16, ad_read(devc, 16) | 0x40); /* Start the timer */
2736 devc->timer_running = 1;
2737 spin_unlock_irqrestore(&devc->lock,flags);
2738
2739 return current_interval = (divider * xtal_nsecs + 500) / 1000;
2740 }
2741
2742 static void ad1848_tmr_reprogram(int dev)
2743 {
2744 /*
2745 * Audio driver has changed sampling rate so that a different xtal
2746 * oscillator was selected. We have to reprogram the timer rate.
2747 */
2748
2749 ad1848_tmr_start(dev, current_interval);
2750 sound_timer_syncinterval(current_interval);
2751 }
2752
2753 static void ad1848_tmr_disable(int dev)
2754 {
2755 unsigned long flags;
2756 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
2757
2758 spin_lock_irqsave(&devc->lock,flags);
2759 ad_write(devc, 16, ad_read(devc, 16) & ~0x40);
2760 devc->timer_running = 0;
2761 spin_unlock_irqrestore(&devc->lock,flags);
2762 }
2763
2764 static void ad1848_tmr_restart(int dev)
2765 {
2766 unsigned long flags;
2767 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
2768
2769 if (current_interval == 0)
2770 return;
2771
2772 spin_lock_irqsave(&devc->lock,flags);
2773 ad_write(devc, 16, ad_read(devc, 16) | 0x40);
2774 devc->timer_running = 1;
2775 spin_unlock_irqrestore(&devc->lock,flags);
2776 }
2777
2778 static struct sound_lowlev_timer ad1848_tmr =
2779 {
2780 0,
2781 2,
2782 ad1848_tmr_start,
2783 ad1848_tmr_disable,
2784 ad1848_tmr_restart
2785 };
2786
2787 static int ad1848_tmr_install(int dev)
2788 {
2789 if (timer_installed != -1)
2790 return 0; /* Don't install another timer */
2791
2792 timer_installed = ad1848_tmr.dev = dev;
2793 sound_timer_init(&ad1848_tmr, audio_devs[dev]->name);
2794
2795 return 1;
2796 }
2797 #endif /* EXCLUDE_TIMERS */
2798
2799 EXPORT_SYMBOL(ad1848_detect);
2800 EXPORT_SYMBOL(ad1848_init);
2801 EXPORT_SYMBOL(ad1848_unload);
2802 EXPORT_SYMBOL(ad1848_control);
2803 EXPORT_SYMBOL(probe_ms_sound);
2804 EXPORT_SYMBOL(attach_ms_sound);
2805 EXPORT_SYMBOL(unload_ms_sound);
2806
2807 static int __initdata io = -1;
2808 static int __initdata irq = -1;
2809 static int __initdata dma = -1;
2810 static int __initdata dma2 = -1;
2811 static int __initdata type = 0;
2812
2813 module_param(io, int, 0); /* I/O for a raw AD1848 card */
2814 module_param(irq, int, 0); /* IRQ to use */
2815 module_param(dma, int, 0); /* First DMA channel */
2816 module_param(dma2, int, 0); /* Second DMA channel */
2817 module_param(type, int, 0); /* Card type */
2818 module_param(deskpro_xl, bool, 0); /* Special magic for Deskpro XL boxen */
2819 module_param(deskpro_m, bool, 0); /* Special magic for Deskpro M box */
2820 module_param(soundpro, bool, 0); /* More special magic for SoundPro chips */
2821
2822 #ifdef CONFIG_PNP
2823 module_param(isapnp, int, 0);
2824 module_param(isapnpjump, int, 0);
2825 module_param(reverse, bool, 0);
2826 MODULE_PARM_DESC(isapnp, "When set to 0, Plug & Play support will be disabled");
2827 MODULE_PARM_DESC(isapnpjump, "Jumps to a specific slot in the driver's PnP table. Use the source, Luke.");
2828 MODULE_PARM_DESC(reverse, "When set to 1, will reverse ISAPnP search order");
2829
2830 static struct pnp_dev *ad1848_dev = NULL;
2831
2832 /* Please add new entries at the end of the table */
2833 static struct {
2834 char *name;
2835 unsigned short card_vendor, card_device,
2836 vendor, function;
2837 short mss_io, irq, dma, dma2; /* index into isapnp table */
2838 int type;
2839 } ad1848_isapnp_list[] __initdata = {
2840 {"CMI 8330 SoundPRO",
2841 ISAPNP_VENDOR('C','M','I'), ISAPNP_DEVICE(0x0001),
2842 ISAPNP_VENDOR('@','@','@'), ISAPNP_FUNCTION(0x0001),
2843 0, 0, 0,-1, 0},
2844 {"CS4232 based card",
2845 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
2846 ISAPNP_VENDOR('C','S','C'), ISAPNP_FUNCTION(0x0000),
2847 0, 0, 0, 1, 0},
2848 {"CS4232 based card",
2849 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
2850 ISAPNP_VENDOR('C','S','C'), ISAPNP_FUNCTION(0x0100),
2851 0, 0, 0, 1, 0},
2852 {"OPL3-SA2 WSS mode",
2853 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
2854 ISAPNP_VENDOR('Y','M','H'), ISAPNP_FUNCTION(0x0021),
2855 1, 0, 0, 1, 1},
2856 {"Advanced Gravis InterWave Audio",
2857 ISAPNP_VENDOR('G','R','V'), ISAPNP_DEVICE(0x0001),
2858 ISAPNP_VENDOR('G','R','V'), ISAPNP_FUNCTION(0x0000),
2859 0, 0, 0, 1, 0},
2860 {NULL}
2861 };
2862
2863 static struct isapnp_device_id id_table[] = {
2864 { ISAPNP_VENDOR('C','M','I'), ISAPNP_DEVICE(0x0001),
2865 ISAPNP_VENDOR('@','@','@'), ISAPNP_FUNCTION(0x0001), 0 },
2866 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
2867 ISAPNP_VENDOR('C','S','C'), ISAPNP_FUNCTION(0x0000), 0 },
2868 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
2869 ISAPNP_VENDOR('C','S','C'), ISAPNP_FUNCTION(0x0100), 0 },
2870 /* The main driver for this card is opl3sa2
2871 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
2872 ISAPNP_VENDOR('Y','M','H'), ISAPNP_FUNCTION(0x0021), 0 },
2873 */
2874 { ISAPNP_VENDOR('G','R','V'), ISAPNP_DEVICE(0x0001),
2875 ISAPNP_VENDOR('G','R','V'), ISAPNP_FUNCTION(0x0000), 0 },
2876 {0}
2877 };
2878
2879 MODULE_DEVICE_TABLE(isapnp, id_table);
2880
2881 static struct pnp_dev *activate_dev(char *devname, char *resname, struct pnp_dev *dev)
2882 {
2883 int err;
2884
2885 err = pnp_device_attach(dev);
2886 if (err < 0)
2887 return(NULL);
2888
2889 if((err = pnp_activate_dev(dev)) < 0) {
2890 printk(KERN_ERR "ad1848: %s %s config failed (out of resources?)[%d]\n", devname, resname, err);
2891
2892 pnp_device_detach(dev);
2893
2894 return(NULL);
2895 }
2896 audio_activated = 1;
2897 return(dev);
2898 }
2899
2900 static struct pnp_dev __init *ad1848_init_generic(struct pnp_card *bus,
2901 struct address_info *hw_config, int slot)
2902 {
2903
2904 /* Configure Audio device */
2905 if((ad1848_dev = pnp_find_dev(bus, ad1848_isapnp_list[slot].vendor, ad1848_isapnp_list[slot].function, NULL)))
2906 {
2907 if((ad1848_dev = activate_dev(ad1848_isapnp_list[slot].name, "ad1848", ad1848_dev)))
2908 {
2909 hw_config->io_base = pnp_port_start(ad1848_dev, ad1848_isapnp_list[slot].mss_io);
2910 hw_config->irq = pnp_irq(ad1848_dev, ad1848_isapnp_list[slot].irq);
2911 hw_config->dma = pnp_dma(ad1848_dev, ad1848_isapnp_list[slot].dma);
2912 if(ad1848_isapnp_list[slot].dma2 != -1)
2913 hw_config->dma2 = pnp_dma(ad1848_dev, ad1848_isapnp_list[slot].dma2);
2914 else
2915 hw_config->dma2 = -1;
2916 hw_config->card_subtype = ad1848_isapnp_list[slot].type;
2917 } else
2918 return(NULL);
2919 } else
2920 return(NULL);
2921
2922 return(ad1848_dev);
2923 }
2924
2925 static int __init ad1848_isapnp_init(struct address_info *hw_config, struct pnp_card *bus, int slot)
2926 {
2927 char *busname = bus->name[0] ? bus->name : ad1848_isapnp_list[slot].name;
2928
2929 /* Initialize this baby. */
2930
2931 if(ad1848_init_generic(bus, hw_config, slot)) {
2932 /* We got it. */
2933
2934 printk(KERN_NOTICE "ad1848: PnP reports '%s' at i/o %#x, irq %d, dma %d, %d\n",
2935 busname,
2936 hw_config->io_base, hw_config->irq, hw_config->dma,
2937 hw_config->dma2);
2938 return 1;
2939 }
2940 return 0;
2941 }
2942
2943 static int __init ad1848_isapnp_probe(struct address_info *hw_config)
2944 {
2945 static int first = 1;
2946 int i;
2947
2948 /* Count entries in sb_isapnp_list */
2949 for (i = 0; ad1848_isapnp_list[i].card_vendor != 0; i++);
2950 i--;
2951
2952 /* Check and adjust isapnpjump */
2953 if( isapnpjump < 0 || isapnpjump > i) {
2954 isapnpjump = reverse ? i : 0;
2955 printk(KERN_ERR "ad1848: Valid range for isapnpjump is 0-%d. Adjusted to %d.\n", i, isapnpjump);
2956 }
2957
2958 if(!first || !reverse)
2959 i = isapnpjump;
2960 first = 0;
2961 while(ad1848_isapnp_list[i].card_vendor != 0) {
2962 static struct pnp_card *bus = NULL;
2963
2964 while ((bus = pnp_find_card(
2965 ad1848_isapnp_list[i].card_vendor,
2966 ad1848_isapnp_list[i].card_device,
2967 bus))) {
2968
2969 if(ad1848_isapnp_init(hw_config, bus, i)) {
2970 isapnpjump = i; /* start next search from here */
2971 return 0;
2972 }
2973 }
2974 i += reverse ? -1 : 1;
2975 }
2976
2977 return -ENODEV;
2978 }
2979 #endif
2980
2981
2982 static int __init init_ad1848(void)
2983 {
2984 printk(KERN_INFO "ad1848/cs4248 codec driver Copyright (C) by Hannu Savolainen 1993-1996\n");
2985
2986 #ifdef CONFIG_PNP
2987 if(isapnp && (ad1848_isapnp_probe(&cfg) < 0) ) {
2988 printk(KERN_NOTICE "ad1848: No ISAPnP cards found, trying standard ones...\n");
2989 isapnp = 0;
2990 }
2991 #endif
2992
2993 if(io != -1) {
2994 struct resource *ports;
2995 if( isapnp == 0 )
2996 {
2997 if(irq == -1 || dma == -1) {
2998 printk(KERN_WARNING "ad1848: must give I/O , IRQ and DMA.\n");
2999 return -EINVAL;
3000 }
3001
3002 cfg.irq = irq;
3003 cfg.io_base = io;
3004 cfg.dma = dma;
3005 cfg.dma2 = dma2;
3006 cfg.card_subtype = type;
3007 }
3008
3009 ports = request_region(io + 4, 4, "ad1848");
3010
3011 if (!ports)
3012 return -EBUSY;
3013
3014 if (!request_region(io, 4, "WSS config")) {
3015 release_region(io + 4, 4);
3016 return -EBUSY;
3017 }
3018
3019 if (!probe_ms_sound(&cfg, ports)) {
3020 release_region(io + 4, 4);
3021 release_region(io, 4);
3022 return -ENODEV;
3023 }
3024 attach_ms_sound(&cfg, ports, THIS_MODULE);
3025 loaded = 1;
3026 }
3027 return 0;
3028 }
3029
3030 static void __exit cleanup_ad1848(void)
3031 {
3032 if(loaded)
3033 unload_ms_sound(&cfg);
3034
3035 #ifdef CONFIG_PNP
3036 if(ad1848_dev){
3037 if(audio_activated)
3038 pnp_device_detach(ad1848_dev);
3039 }
3040 #endif
3041 }
3042
3043 module_init(init_ad1848);
3044 module_exit(cleanup_ad1848);
3045
3046 #ifndef MODULE
3047 static int __init setup_ad1848(char *str)
3048 {
3049 /* io, irq, dma, dma2, type */
3050 int ints[6];
3051
3052 str = get_options(str, ARRAY_SIZE(ints), ints);
3053
3054 io = ints[1];
3055 irq = ints[2];
3056 dma = ints[3];
3057 dma2 = ints[4];
3058 type = ints[5];
3059
3060 return 1;
3061 }
3062
3063 __setup("ad1848=", setup_ad1848);
3064 #endif
3065 MODULE_LICENSE("GPL");
Linux with added FPC-III support