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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /sound/oss/ad1848.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'sound/oss/ad1848.c')
-rw-r--r--sound/oss/ad1848.c3159
1 files changed, 3159 insertions, 0 deletions
diff --git a/sound/oss/ad1848.c b/sound/oss/ad1848.c
new file mode 100644
index 000000000000..4384dac3f794
--- /dev/null
+++ b/sound/oss/ad1848.c
@@ -0,0 +1,3159 @@
1/*
2 * sound/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/config.h>
45#include <linux/init.h>
46#include <linux/interrupt.h>
47#include <linux/module.h>
48#include <linux/stddef.h>
49#include <linux/pm.h>
50#include <linux/isapnp.h>
51#include <linux/pnp.h>
52#include <linux/spinlock.h>
53
54#define DEB(x)
55#define DEB1(x)
56#include "sound_config.h"
57
58#include "ad1848.h"
59#include "ad1848_mixer.h"
60
61typedef struct
62{
63 spinlock_t lock;
64 int base;
65 int irq;
66 int dma1, dma2;
67 int dual_dma; /* 1, when two DMA channels allocated */
68 int subtype;
69 unsigned char MCE_bit;
70 unsigned char saved_regs[64]; /* Includes extended register space */
71 int debug_flag;
72
73 int audio_flags;
74 int record_dev, playback_dev;
75
76 int xfer_count;
77 int audio_mode;
78 int open_mode;
79 int intr_active;
80 char *chip_name, *name;
81 int model;
82#define MD_1848 1
83#define MD_4231 2
84#define MD_4231A 3
85#define MD_1845 4
86#define MD_4232 5
87#define MD_C930 6
88#define MD_IWAVE 7
89#define MD_4235 8 /* Crystal Audio CS4235 */
90#define MD_1845_SSCAPE 9 /* Ensoniq Soundscape PNP*/
91#define MD_4236 10 /* 4236 and higher */
92#define MD_42xB 11 /* CS 42xB */
93#define MD_4239 12 /* CS4239 */
94
95 /* Mixer parameters */
96 int recmask;
97 int supported_devices, orig_devices;
98 int supported_rec_devices, orig_rec_devices;
99 int *levels;
100 short mixer_reroute[32];
101 int dev_no;
102 volatile unsigned long timer_ticks;
103 int timer_running;
104 int irq_ok;
105 mixer_ents *mix_devices;
106 int mixer_output_port;
107
108 /* Power management */
109 struct pm_dev *pmdev;
110} ad1848_info;
111
112typedef struct ad1848_port_info
113{
114 int open_mode;
115 int speed;
116 unsigned char speed_bits;
117 int channels;
118 int audio_format;
119 unsigned char format_bits;
120}
121ad1848_port_info;
122
123static struct address_info cfg;
124static int nr_ad1848_devs;
125
126static int deskpro_xl;
127static int deskpro_m;
128static int soundpro;
129
130static volatile signed char irq2dev[17] = {
131 -1, -1, -1, -1, -1, -1, -1, -1,
132 -1, -1, -1, -1, -1, -1, -1, -1, -1
133};
134
135#ifndef EXCLUDE_TIMERS
136static int timer_installed = -1;
137#endif
138
139static int loaded;
140
141static int ad_format_mask[13 /*devc->model */ ] =
142{
143 0,
144 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW,
145 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
146 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
147 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW, /* AD1845 */
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 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
151 AFMT_U8 | AFMT_S16_LE /* CS4235 */,
152 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW /* Ensoniq Soundscape*/,
153 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
154 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
155 AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM
156};
157
158static ad1848_info adev_info[MAX_AUDIO_DEV];
159
160#define io_Index_Addr(d) ((d)->base)
161#define io_Indexed_Data(d) ((d)->base+1)
162#define io_Status(d) ((d)->base+2)
163#define io_Polled_IO(d) ((d)->base+3)
164
165static struct {
166 unsigned char flags;
167#define CAP_F_TIMER 0x01
168} capabilities [10 /*devc->model */ ] = {
169 {0}
170 ,{0} /* MD_1848 */
171 ,{CAP_F_TIMER} /* MD_4231 */
172 ,{CAP_F_TIMER} /* MD_4231A */
173 ,{CAP_F_TIMER} /* MD_1845 */
174 ,{CAP_F_TIMER} /* MD_4232 */
175 ,{0} /* MD_C930 */
176 ,{CAP_F_TIMER} /* MD_IWAVE */
177 ,{0} /* MD_4235 */
178 ,{CAP_F_TIMER} /* MD_1845_SSCAPE */
179};
180
181#ifdef CONFIG_PNP
182static int isapnp = 1;
183static int isapnpjump;
184static int reverse;
185
186static int audio_activated;
187#else
188static int isapnp;
189#endif
190
191
192
193static int ad1848_open(int dev, int mode);
194static void ad1848_close(int dev);
195static void ad1848_output_block(int dev, unsigned long buf, int count, int intrflag);
196static void ad1848_start_input(int dev, unsigned long buf, int count, int intrflag);
197static int ad1848_prepare_for_output(int dev, int bsize, int bcount);
198static int ad1848_prepare_for_input(int dev, int bsize, int bcount);
199static void ad1848_halt(int dev);
200static void ad1848_halt_input(int dev);
201static void ad1848_halt_output(int dev);
202static void ad1848_trigger(int dev, int bits);
203static int ad1848_pm_callback(struct pm_dev *dev, pm_request_t rqst, void *data);
204
205#ifndef EXCLUDE_TIMERS
206static int ad1848_tmr_install(int dev);
207static void ad1848_tmr_reprogram(int dev);
208#endif
209
210static int ad_read(ad1848_info * devc, int reg)
211{
212 int x;
213 int timeout = 900000;
214
215 while (timeout > 0 && inb(devc->base) == 0x80) /*Are we initializing */
216 timeout--;
217
218 if(reg < 32)
219 {
220 outb(((unsigned char) (reg & 0xff) | devc->MCE_bit), io_Index_Addr(devc));
221 x = inb(io_Indexed_Data(devc));
222 }
223 else
224 {
225 int xreg, xra;
226
227 xreg = (reg & 0xff) - 32;
228 xra = (((xreg & 0x0f) << 4) & 0xf0) | 0x08 | ((xreg & 0x10) >> 2);
229 outb(((unsigned char) (23 & 0xff) | devc->MCE_bit), io_Index_Addr(devc));
230 outb(((unsigned char) (xra & 0xff)), io_Indexed_Data(devc));
231 x = inb(io_Indexed_Data(devc));
232 }
233
234 return x;
235}
236
237static void ad_write(ad1848_info * devc, int reg, int data)
238{
239 int timeout = 900000;
240
241 while (timeout > 0 && inb(devc->base) == 0x80) /* Are we initializing */
242 timeout--;
243
244 if(reg < 32)
245 {
246 outb(((unsigned char) (reg & 0xff) | devc->MCE_bit), io_Index_Addr(devc));
247 outb(((unsigned char) (data & 0xff)), io_Indexed_Data(devc));
248 }
249 else
250 {
251 int xreg, xra;
252
253 xreg = (reg & 0xff) - 32;
254 xra = (((xreg & 0x0f) << 4) & 0xf0) | 0x08 | ((xreg & 0x10) >> 2);
255 outb(((unsigned char) (23 & 0xff) | devc->MCE_bit), io_Index_Addr(devc));
256 outb(((unsigned char) (xra & 0xff)), io_Indexed_Data(devc));
257 outb((unsigned char) (data & 0xff), io_Indexed_Data(devc));
258 }
259}
260
261static void wait_for_calibration(ad1848_info * devc)
262{
263 int timeout = 0;
264
265 /*
266 * Wait until the auto calibration process has finished.
267 *
268 * 1) Wait until the chip becomes ready (reads don't return 0x80).
269 * 2) Wait until the ACI bit of I11 gets on and then off.
270 */
271
272 timeout = 100000;
273 while (timeout > 0 && inb(devc->base) == 0x80)
274 timeout--;
275 if (inb(devc->base) & 0x80)
276 printk(KERN_WARNING "ad1848: Auto calibration timed out(1).\n");
277
278 timeout = 100;
279 while (timeout > 0 && !(ad_read(devc, 11) & 0x20))
280 timeout--;
281 if (!(ad_read(devc, 11) & 0x20))
282 return;
283
284 timeout = 80000;
285 while (timeout > 0 && (ad_read(devc, 11) & 0x20))
286 timeout--;
287 if (ad_read(devc, 11) & 0x20)
288 if ( (devc->model != MD_1845) || (devc->model != MD_1845_SSCAPE))
289 printk(KERN_WARNING "ad1848: Auto calibration timed out(3).\n");
290}
291
292static void ad_mute(ad1848_info * devc)
293{
294 int i;
295 unsigned char prev;
296
297 /*
298 * Save old register settings and mute output channels
299 */
300
301 for (i = 6; i < 8; i++)
302 {
303 prev = devc->saved_regs[i] = ad_read(devc, i);
304 }
305
306}
307
308static void ad_unmute(ad1848_info * devc)
309{
310}
311
312static void ad_enter_MCE(ad1848_info * devc)
313{
314 int timeout = 1000;
315 unsigned short prev;
316
317 while (timeout > 0 && inb(devc->base) == 0x80) /*Are we initializing */
318 timeout--;
319
320 devc->MCE_bit = 0x40;
321 prev = inb(io_Index_Addr(devc));
322 if (prev & 0x40)
323 {
324 return;
325 }
326 outb((devc->MCE_bit), io_Index_Addr(devc));
327}
328
329static void ad_leave_MCE(ad1848_info * devc)
330{
331 unsigned char prev, acal;
332 int timeout = 1000;
333
334 while (timeout > 0 && inb(devc->base) == 0x80) /*Are we initializing */
335 timeout--;
336
337 acal = ad_read(devc, 9);
338
339 devc->MCE_bit = 0x00;
340 prev = inb(io_Index_Addr(devc));
341 outb((0x00), io_Index_Addr(devc)); /* Clear the MCE bit */
342
343 if ((prev & 0x40) == 0) /* Not in MCE mode */
344 {
345 return;
346 }
347 outb((0x00), io_Index_Addr(devc)); /* Clear the MCE bit */
348 if (acal & 0x08) /* Auto calibration is enabled */
349 wait_for_calibration(devc);
350}
351
352static int ad1848_set_recmask(ad1848_info * devc, int mask)
353{
354 unsigned char recdev;
355 int i, n;
356 unsigned long flags;
357
358 mask &= devc->supported_rec_devices;
359
360 /* Rename the mixer bits if necessary */
361 for (i = 0; i < 32; i++)
362 {
363 if (devc->mixer_reroute[i] != i)
364 {
365 if (mask & (1 << i))
366 {
367 mask &= ~(1 << i);
368 mask |= (1 << devc->mixer_reroute[i]);
369 }
370 }
371 }
372
373 n = 0;
374 for (i = 0; i < 32; i++) /* Count selected device bits */
375 if (mask & (1 << i))
376 n++;
377
378 spin_lock_irqsave(&devc->lock,flags);
379 if (!soundpro) {
380 if (n == 0)
381 mask = SOUND_MASK_MIC;
382 else if (n != 1) { /* Too many devices selected */
383 mask &= ~devc->recmask; /* Filter out active settings */
384
385 n = 0;
386 for (i = 0; i < 32; i++) /* Count selected device bits */
387 if (mask & (1 << i))
388 n++;
389
390 if (n != 1)
391 mask = SOUND_MASK_MIC;
392 }
393 switch (mask) {
394 case SOUND_MASK_MIC:
395 recdev = 2;
396 break;
397
398 case SOUND_MASK_LINE:
399 case SOUND_MASK_LINE3:
400 recdev = 0;
401 break;
402
403 case SOUND_MASK_CD:
404 case SOUND_MASK_LINE1:
405 recdev = 1;
406 break;
407
408 case SOUND_MASK_IMIX:
409 recdev = 3;
410 break;
411
412 default:
413 mask = SOUND_MASK_MIC;
414 recdev = 2;
415 }
416
417 recdev <<= 6;
418 ad_write(devc, 0, (ad_read(devc, 0) & 0x3f) | recdev);
419 ad_write(devc, 1, (ad_read(devc, 1) & 0x3f) | recdev);
420 } else { /* soundpro */
421 unsigned char val;
422 int set_rec_bit;
423 int j;
424
425 for (i = 0; i < 32; i++) { /* For each bit */
426 if ((devc->supported_rec_devices & (1 << i)) == 0)
427 continue; /* Device not supported */
428
429 for (j = LEFT_CHN; j <= RIGHT_CHN; j++) {
430 if (devc->mix_devices[i][j].nbits == 0) /* Inexistent channel */
431 continue;
432
433 /*
434 * This is tricky:
435 * set_rec_bit becomes 1 if the corresponding bit in mask is set
436 * then it gets flipped if the polarity is inverse
437 */
438 set_rec_bit = ((mask & (1 << i)) != 0) ^ devc->mix_devices[i][j].recpol;
439
440 val = ad_read(devc, devc->mix_devices[i][j].recreg);
441 val &= ~(1 << devc->mix_devices[i][j].recpos);
442 val |= (set_rec_bit << devc->mix_devices[i][j].recpos);
443 ad_write(devc, devc->mix_devices[i][j].recreg, val);
444 }
445 }
446 }
447 spin_unlock_irqrestore(&devc->lock,flags);
448
449 /* Rename the mixer bits back if necessary */
450 for (i = 0; i < 32; i++)
451 {
452 if (devc->mixer_reroute[i] != i)
453 {
454 if (mask & (1 << devc->mixer_reroute[i]))
455 {
456 mask &= ~(1 << devc->mixer_reroute[i]);
457 mask |= (1 << i);
458 }
459 }
460 }
461 devc->recmask = mask;
462 return mask;
463}
464
465static void change_bits(ad1848_info * devc, unsigned char *regval,
466 unsigned char *muteval, int dev, int chn, int newval)
467{
468 unsigned char mask;
469 int shift;
470 int mute;
471 int mutemask;
472 int set_mute_bit;
473
474 set_mute_bit = (newval == 0) ^ devc->mix_devices[dev][chn].mutepol;
475
476 if (devc->mix_devices[dev][chn].polarity == 1) /* Reverse */
477 newval = 100 - newval;
478
479 mask = (1 << devc->mix_devices[dev][chn].nbits) - 1;
480 shift = devc->mix_devices[dev][chn].bitpos;
481
482 if (devc->mix_devices[dev][chn].mutepos == 8)
483 { /* if there is no mute bit */
484 mute = 0; /* No mute bit; do nothing special */
485 mutemask = ~0; /* No mute bit; do nothing special */
486 }
487 else
488 {
489 mute = (set_mute_bit << devc->mix_devices[dev][chn].mutepos);
490 mutemask = ~(1 << devc->mix_devices[dev][chn].mutepos);
491 }
492
493 newval = (int) ((newval * mask) + 50) / 100; /* Scale it */
494 *regval &= ~(mask << shift); /* Clear bits */
495 *regval |= (newval & mask) << shift; /* Set new value */
496
497 *muteval &= mutemask;
498 *muteval |= mute;
499}
500
501static int ad1848_mixer_get(ad1848_info * devc, int dev)
502{
503 if (!((1 << dev) & devc->supported_devices))
504 return -EINVAL;
505
506 dev = devc->mixer_reroute[dev];
507
508 return devc->levels[dev];
509}
510
511static void ad1848_mixer_set_channel(ad1848_info *devc, int dev, int value, int channel)
512{
513 int regoffs, muteregoffs;
514 unsigned char val, muteval;
515 unsigned long flags;
516
517 regoffs = devc->mix_devices[dev][channel].regno;
518 muteregoffs = devc->mix_devices[dev][channel].mutereg;
519 val = ad_read(devc, regoffs);
520
521 if (muteregoffs != regoffs) {
522 muteval = ad_read(devc, muteregoffs);
523 change_bits(devc, &val, &muteval, dev, channel, value);
524 }
525 else
526 change_bits(devc, &val, &val, dev, channel, value);
527
528 spin_lock_irqsave(&devc->lock,flags);
529 ad_write(devc, regoffs, val);
530 devc->saved_regs[regoffs] = val;
531 if (muteregoffs != regoffs) {
532 ad_write(devc, muteregoffs, muteval);
533 devc->saved_regs[muteregoffs] = muteval;
534 }
535 spin_unlock_irqrestore(&devc->lock,flags);
536}
537
538static int ad1848_mixer_set(ad1848_info * devc, int dev, int value)
539{
540 int left = value & 0x000000ff;
541 int right = (value & 0x0000ff00) >> 8;
542 int retvol;
543
544 if (dev > 31)
545 return -EINVAL;
546
547 if (!(devc->supported_devices & (1 << dev)))
548 return -EINVAL;
549
550 dev = devc->mixer_reroute[dev];
551
552 if (devc->mix_devices[dev][LEFT_CHN].nbits == 0)
553 return -EINVAL;
554
555 if (left > 100)
556 left = 100;
557 if (right > 100)
558 right = 100;
559
560 if (devc->mix_devices[dev][RIGHT_CHN].nbits == 0) /* Mono control */
561 right = left;
562
563 retvol = left | (right << 8);
564
565 /* Scale volumes */
566 left = mix_cvt[left];
567 right = mix_cvt[right];
568
569 devc->levels[dev] = retvol;
570
571 /*
572 * Set the left channel
573 */
574 ad1848_mixer_set_channel(devc, dev, left, LEFT_CHN);
575
576 /*
577 * Set the right channel
578 */
579 if (devc->mix_devices[dev][RIGHT_CHN].nbits == 0)
580 goto out;
581 ad1848_mixer_set_channel(devc, dev, right, RIGHT_CHN);
582
583 out:
584 return retvol;
585}
586
587static void ad1848_mixer_reset(ad1848_info * devc)
588{
589 int i;
590 char name[32];
591 unsigned long flags;
592
593 devc->mix_devices = &(ad1848_mix_devices[0]);
594
595 sprintf(name, "%s_%d", devc->chip_name, nr_ad1848_devs);
596
597 for (i = 0; i < 32; i++)
598 devc->mixer_reroute[i] = i;
599
600 devc->supported_rec_devices = MODE1_REC_DEVICES;
601
602 switch (devc->model)
603 {
604 case MD_4231:
605 case MD_4231A:
606 case MD_1845:
607 case MD_1845_SSCAPE:
608 devc->supported_devices = MODE2_MIXER_DEVICES;
609 break;
610
611 case MD_C930:
612 devc->supported_devices = C930_MIXER_DEVICES;
613 devc->mix_devices = &(c930_mix_devices[0]);
614 break;
615
616 case MD_IWAVE:
617 devc->supported_devices = MODE3_MIXER_DEVICES;
618 devc->mix_devices = &(iwave_mix_devices[0]);
619 break;
620
621 case MD_42xB:
622 case MD_4239:
623 devc->mix_devices = &(cs42xb_mix_devices[0]);
624 devc->supported_devices = MODE3_MIXER_DEVICES;
625 break;
626 case MD_4232:
627 case MD_4235:
628 case MD_4236:
629 devc->supported_devices = MODE3_MIXER_DEVICES;
630 break;
631
632 case MD_1848:
633 if (soundpro) {
634 devc->supported_devices = SPRO_MIXER_DEVICES;
635 devc->supported_rec_devices = SPRO_REC_DEVICES;
636 devc->mix_devices = &(spro_mix_devices[0]);
637 break;
638 }
639
640 default:
641 devc->supported_devices = MODE1_MIXER_DEVICES;
642 }
643
644 devc->orig_devices = devc->supported_devices;
645 devc->orig_rec_devices = devc->supported_rec_devices;
646
647 devc->levels = load_mixer_volumes(name, default_mixer_levels, 1);
648
649 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
650 {
651 if (devc->supported_devices & (1 << i))
652 ad1848_mixer_set(devc, i, devc->levels[i]);
653 }
654
655 ad1848_set_recmask(devc, SOUND_MASK_MIC);
656
657 devc->mixer_output_port = devc->levels[31] | AUDIO_HEADPHONE | AUDIO_LINE_OUT;
658
659 spin_lock_irqsave(&devc->lock,flags);
660 if (!soundpro) {
661 if (devc->mixer_output_port & AUDIO_SPEAKER)
662 ad_write(devc, 26, ad_read(devc, 26) & ~0x40); /* Unmute mono out */
663 else
664 ad_write(devc, 26, ad_read(devc, 26) | 0x40); /* Mute mono out */
665 } else {
666 /*
667 * From the "wouldn't it be nice if the mixer API had (better)
668 * support for custom stuff" category
669 */
670 /* Enable surround mode and SB16 mixer */
671 ad_write(devc, 16, 0x60);
672 }
673 spin_unlock_irqrestore(&devc->lock,flags);
674}
675
676static int ad1848_mixer_ioctl(int dev, unsigned int cmd, void __user *arg)
677{
678 ad1848_info *devc = mixer_devs[dev]->devc;
679 int val;
680
681 if (cmd == SOUND_MIXER_PRIVATE1)
682 {
683 if (get_user(val, (int __user *)arg))
684 return -EFAULT;
685
686 if (val != 0xffff)
687 {
688 unsigned long flags;
689 val &= (AUDIO_SPEAKER | AUDIO_HEADPHONE | AUDIO_LINE_OUT);
690 devc->mixer_output_port = val;
691 val |= AUDIO_HEADPHONE | AUDIO_LINE_OUT; /* Always on */
692 devc->mixer_output_port = val;
693 spin_lock_irqsave(&devc->lock,flags);
694 if (val & AUDIO_SPEAKER)
695 ad_write(devc, 26, ad_read(devc, 26) & ~0x40); /* Unmute mono out */
696 else
697 ad_write(devc, 26, ad_read(devc, 26) | 0x40); /* Mute mono out */
698 spin_unlock_irqrestore(&devc->lock,flags);
699 }
700 val = devc->mixer_output_port;
701 return put_user(val, (int __user *)arg);
702 }
703 if (cmd == SOUND_MIXER_PRIVATE2)
704 {
705 if (get_user(val, (int __user *)arg))
706 return -EFAULT;
707 return(ad1848_control(AD1848_MIXER_REROUTE, val));
708 }
709 if (((cmd >> 8) & 0xff) == 'M')
710 {
711 if (_SIOC_DIR(cmd) & _SIOC_WRITE)
712 {
713 switch (cmd & 0xff)
714 {
715 case SOUND_MIXER_RECSRC:
716 if (get_user(val, (int __user *)arg))
717 return -EFAULT;
718 val = ad1848_set_recmask(devc, val);
719 break;
720
721 default:
722 if (get_user(val, (int __user *)arg))
723 return -EFAULT;
724 val = ad1848_mixer_set(devc, cmd & 0xff, val);
725 break;
726 }
727 return put_user(val, (int __user *)arg);
728 }
729 else
730 {
731 switch (cmd & 0xff)
732 {
733 /*
734 * Return parameters
735 */
736
737 case SOUND_MIXER_RECSRC:
738 val = devc->recmask;
739 break;
740
741 case SOUND_MIXER_DEVMASK:
742 val = devc->supported_devices;
743 break;
744
745 case SOUND_MIXER_STEREODEVS:
746 val = devc->supported_devices;
747 if (devc->model != MD_C930)
748 val &= ~(SOUND_MASK_SPEAKER | SOUND_MASK_IMIX);
749 break;
750
751 case SOUND_MIXER_RECMASK:
752 val = devc->supported_rec_devices;
753 break;
754
755 case SOUND_MIXER_CAPS:
756 val=SOUND_CAP_EXCL_INPUT;
757 break;
758
759 default:
760 val = ad1848_mixer_get(devc, cmd & 0xff);
761 break;
762 }
763 return put_user(val, (int __user *)arg);
764 }
765 }
766 else
767 return -EINVAL;
768}
769
770static int ad1848_set_speed(int dev, int arg)
771{
772 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
773 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
774
775 /*
776 * The sampling speed is encoded in the least significant nibble of I8. The
777 * LSB selects the clock source (0=24.576 MHz, 1=16.9344 MHz) and other
778 * three bits select the divisor (indirectly):
779 *
780 * The available speeds are in the following table. Keep the speeds in
781 * the increasing order.
782 */
783 typedef struct
784 {
785 int speed;
786 unsigned char bits;
787 }
788 speed_struct;
789
790 static speed_struct speed_table[] =
791 {
792 {5510, (0 << 1) | 1},
793 {5510, (0 << 1) | 1},
794 {6620, (7 << 1) | 1},
795 {8000, (0 << 1) | 0},
796 {9600, (7 << 1) | 0},
797 {11025, (1 << 1) | 1},
798 {16000, (1 << 1) | 0},
799 {18900, (2 << 1) | 1},
800 {22050, (3 << 1) | 1},
801 {27420, (2 << 1) | 0},
802 {32000, (3 << 1) | 0},
803 {33075, (6 << 1) | 1},
804 {37800, (4 << 1) | 1},
805 {44100, (5 << 1) | 1},
806 {48000, (6 << 1) | 0}
807 };
808
809 int i, n, selected = -1;
810
811 n = sizeof(speed_table) / sizeof(speed_struct);
812
813 if (arg <= 0)
814 return portc->speed;
815
816 if (devc->model == MD_1845 || devc->model == MD_1845_SSCAPE) /* AD1845 has different timer than others */
817 {
818 if (arg < 4000)
819 arg = 4000;
820 if (arg > 50000)
821 arg = 50000;
822
823 portc->speed = arg;
824 portc->speed_bits = speed_table[3].bits;
825 return portc->speed;
826 }
827 if (arg < speed_table[0].speed)
828 selected = 0;
829 if (arg > speed_table[n - 1].speed)
830 selected = n - 1;
831
832 for (i = 1 /*really */ ; selected == -1 && i < n; i++)
833 {
834 if (speed_table[i].speed == arg)
835 selected = i;
836 else if (speed_table[i].speed > arg)
837 {
838 int diff1, diff2;
839
840 diff1 = arg - speed_table[i - 1].speed;
841 diff2 = speed_table[i].speed - arg;
842
843 if (diff1 < diff2)
844 selected = i - 1;
845 else
846 selected = i;
847 }
848 }
849 if (selected == -1)
850 {
851 printk(KERN_WARNING "ad1848: Can't find speed???\n");
852 selected = 3;
853 }
854 portc->speed = speed_table[selected].speed;
855 portc->speed_bits = speed_table[selected].bits;
856 return portc->speed;
857}
858
859static short ad1848_set_channels(int dev, short arg)
860{
861 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
862
863 if (arg != 1 && arg != 2)
864 return portc->channels;
865
866 portc->channels = arg;
867 return arg;
868}
869
870static unsigned int ad1848_set_bits(int dev, unsigned int arg)
871{
872 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
873 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
874
875 static struct format_tbl
876 {
877 int format;
878 unsigned char bits;
879 }
880 format2bits[] =
881 {
882 {
883 0, 0
884 }
885 ,
886 {
887 AFMT_MU_LAW, 1
888 }
889 ,
890 {
891 AFMT_A_LAW, 3
892 }
893 ,
894 {
895 AFMT_IMA_ADPCM, 5
896 }
897 ,
898 {
899 AFMT_U8, 0
900 }
901 ,
902 {
903 AFMT_S16_LE, 2
904 }
905 ,
906 {
907 AFMT_S16_BE, 6
908 }
909 ,
910 {
911 AFMT_S8, 0
912 }
913 ,
914 {
915 AFMT_U16_LE, 0
916 }
917 ,
918 {
919 AFMT_U16_BE, 0
920 }
921 };
922 int i, n = sizeof(format2bits) / sizeof(struct format_tbl);
923
924 if (arg == 0)
925 return portc->audio_format;
926
927 if (!(arg & ad_format_mask[devc->model]))
928 arg = AFMT_U8;
929
930 portc->audio_format = arg;
931
932 for (i = 0; i < n; i++)
933 if (format2bits[i].format == arg)
934 {
935 if ((portc->format_bits = format2bits[i].bits) == 0)
936 return portc->audio_format = AFMT_U8; /* Was not supported */
937
938 return arg;
939 }
940 /* Still hanging here. Something must be terribly wrong */
941 portc->format_bits = 0;
942 return portc->audio_format = AFMT_U8;
943}
944
945static struct audio_driver ad1848_audio_driver =
946{
947 .owner = THIS_MODULE,
948 .open = ad1848_open,
949 .close = ad1848_close,
950 .output_block = ad1848_output_block,
951 .start_input = ad1848_start_input,
952 .prepare_for_input = ad1848_prepare_for_input,
953 .prepare_for_output = ad1848_prepare_for_output,
954 .halt_io = ad1848_halt,
955 .halt_input = ad1848_halt_input,
956 .halt_output = ad1848_halt_output,
957 .trigger = ad1848_trigger,
958 .set_speed = ad1848_set_speed,
959 .set_bits = ad1848_set_bits,
960 .set_channels = ad1848_set_channels
961};
962
963static struct mixer_operations ad1848_mixer_operations =
964{
965 .owner = THIS_MODULE,
966 .id = "SOUNDPORT",
967 .name = "AD1848/CS4248/CS4231",
968 .ioctl = ad1848_mixer_ioctl
969};
970
971static int ad1848_open(int dev, int mode)
972{
973 ad1848_info *devc;
974 ad1848_port_info *portc;
975 unsigned long flags;
976
977 if (dev < 0 || dev >= num_audiodevs)
978 return -ENXIO;
979
980 devc = (ad1848_info *) audio_devs[dev]->devc;
981 portc = (ad1848_port_info *) audio_devs[dev]->portc;
982
983 /* here we don't have to protect against intr */
984 spin_lock(&devc->lock);
985 if (portc->open_mode || (devc->open_mode & mode))
986 {
987 spin_unlock(&devc->lock);
988 return -EBUSY;
989 }
990 devc->dual_dma = 0;
991
992 if (audio_devs[dev]->flags & DMA_DUPLEX)
993 {
994 devc->dual_dma = 1;
995 }
996 devc->intr_active = 0;
997 devc->audio_mode = 0;
998 devc->open_mode |= mode;
999 portc->open_mode = mode;
1000 spin_unlock(&devc->lock);
1001 ad1848_trigger(dev, 0);
1002
1003 if (mode & OPEN_READ)
1004 devc->record_dev = dev;
1005 if (mode & OPEN_WRITE)
1006 devc->playback_dev = dev;
1007/*
1008 * Mute output until the playback really starts. This decreases clicking (hope so).
1009 */
1010 spin_lock_irqsave(&devc->lock,flags);
1011 ad_mute(devc);
1012 spin_unlock_irqrestore(&devc->lock,flags);
1013
1014 return 0;
1015}
1016
1017static void ad1848_close(int dev)
1018{
1019 unsigned long flags;
1020 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
1021 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
1022
1023 DEB(printk("ad1848_close(void)\n"));
1024
1025 devc->intr_active = 0;
1026 ad1848_halt(dev);
1027
1028 spin_lock_irqsave(&devc->lock,flags);
1029
1030 devc->audio_mode = 0;
1031 devc->open_mode &= ~portc->open_mode;
1032 portc->open_mode = 0;
1033
1034 ad_unmute(devc);
1035 spin_unlock_irqrestore(&devc->lock,flags);
1036}
1037
1038static void ad1848_output_block(int dev, unsigned long buf, int count, int intrflag)
1039{
1040 unsigned long flags, cnt;
1041 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
1042 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
1043
1044 cnt = count;
1045
1046 if (portc->audio_format == AFMT_IMA_ADPCM)
1047 {
1048 cnt /= 4;
1049 }
1050 else
1051 {
1052 if (portc->audio_format & (AFMT_S16_LE | AFMT_S16_BE)) /* 16 bit data */
1053 cnt >>= 1;
1054 }
1055 if (portc->channels > 1)
1056 cnt >>= 1;
1057 cnt--;
1058
1059 if ((devc->audio_mode & PCM_ENABLE_OUTPUT) && (audio_devs[dev]->flags & DMA_AUTOMODE) &&
1060 intrflag &&
1061 cnt == devc->xfer_count)
1062 {
1063 devc->audio_mode |= PCM_ENABLE_OUTPUT;
1064 devc->intr_active = 1;
1065 return; /*
1066 * Auto DMA mode on. No need to react
1067 */
1068 }
1069 spin_lock_irqsave(&devc->lock,flags);
1070
1071 ad_write(devc, 15, (unsigned char) (cnt & 0xff));
1072 ad_write(devc, 14, (unsigned char) ((cnt >> 8) & 0xff));
1073
1074 devc->xfer_count = cnt;
1075 devc->audio_mode |= PCM_ENABLE_OUTPUT;
1076 devc->intr_active = 1;
1077 spin_unlock_irqrestore(&devc->lock,flags);
1078}
1079
1080static void ad1848_start_input(int dev, unsigned long buf, int count, int intrflag)
1081{
1082 unsigned long flags, cnt;
1083 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
1084 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
1085
1086 cnt = count;
1087 if (portc->audio_format == AFMT_IMA_ADPCM)
1088 {
1089 cnt /= 4;
1090 }
1091 else
1092 {
1093 if (portc->audio_format & (AFMT_S16_LE | AFMT_S16_BE)) /* 16 bit data */
1094 cnt >>= 1;
1095 }
1096 if (portc->channels > 1)
1097 cnt >>= 1;
1098 cnt--;
1099
1100 if ((devc->audio_mode & PCM_ENABLE_INPUT) && (audio_devs[dev]->flags & DMA_AUTOMODE) &&
1101 intrflag &&
1102 cnt == devc->xfer_count)
1103 {
1104 devc->audio_mode |= PCM_ENABLE_INPUT;
1105 devc->intr_active = 1;
1106 return; /*
1107 * Auto DMA mode on. No need to react
1108 */
1109 }
1110 spin_lock_irqsave(&devc->lock,flags);
1111
1112 if (devc->model == MD_1848)
1113 {
1114 ad_write(devc, 15, (unsigned char) (cnt & 0xff));
1115 ad_write(devc, 14, (unsigned char) ((cnt >> 8) & 0xff));
1116 }
1117 else
1118 {
1119 ad_write(devc, 31, (unsigned char) (cnt & 0xff));
1120 ad_write(devc, 30, (unsigned char) ((cnt >> 8) & 0xff));
1121 }
1122
1123 ad_unmute(devc);
1124
1125 devc->xfer_count = cnt;
1126 devc->audio_mode |= PCM_ENABLE_INPUT;
1127 devc->intr_active = 1;
1128 spin_unlock_irqrestore(&devc->lock,flags);
1129}
1130
1131static int ad1848_prepare_for_output(int dev, int bsize, int bcount)
1132{
1133 int timeout;
1134 unsigned char fs, old_fs, tmp = 0;
1135 unsigned long flags;
1136 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
1137 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
1138
1139 ad_mute(devc);
1140
1141 spin_lock_irqsave(&devc->lock,flags);
1142 fs = portc->speed_bits | (portc->format_bits << 5);
1143
1144 if (portc->channels > 1)
1145 fs |= 0x10;
1146
1147 ad_enter_MCE(devc); /* Enables changes to the format select reg */
1148
1149 if (devc->model == MD_1845 || devc->model == MD_1845_SSCAPE) /* Use alternate speed select registers */
1150 {
1151 fs &= 0xf0; /* Mask off the rate select bits */
1152
1153 ad_write(devc, 22, (portc->speed >> 8) & 0xff); /* Speed MSB */
1154 ad_write(devc, 23, portc->speed & 0xff); /* Speed LSB */
1155 }
1156 old_fs = ad_read(devc, 8);
1157
1158 if (devc->model == MD_4232 || devc->model >= MD_4236)
1159 {
1160 tmp = ad_read(devc, 16);
1161 ad_write(devc, 16, tmp | 0x30);
1162 }
1163 if (devc->model == MD_IWAVE)
1164 ad_write(devc, 17, 0xc2); /* Disable variable frequency select */
1165
1166 ad_write(devc, 8, fs);
1167
1168 /*
1169 * Write to I8 starts resynchronization. Wait until it completes.
1170 */
1171
1172 timeout = 0;
1173 while (timeout < 100 && inb(devc->base) != 0x80)
1174 timeout++;
1175 timeout = 0;
1176 while (timeout < 10000 && inb(devc->base) == 0x80)
1177 timeout++;
1178
1179 if (devc->model >= MD_4232)
1180 ad_write(devc, 16, tmp & ~0x30);
1181
1182 ad_leave_MCE(devc); /*
1183 * Starts the calibration process.
1184 */
1185 spin_unlock_irqrestore(&devc->lock,flags);
1186 devc->xfer_count = 0;
1187
1188#ifndef EXCLUDE_TIMERS
1189 if (dev == timer_installed && devc->timer_running)
1190 if ((fs & 0x01) != (old_fs & 0x01))
1191 {
1192 ad1848_tmr_reprogram(dev);
1193 }
1194#endif
1195 ad1848_halt_output(dev);
1196 return 0;
1197}
1198
1199static int ad1848_prepare_for_input(int dev, int bsize, int bcount)
1200{
1201 int timeout;
1202 unsigned char fs, old_fs, tmp = 0;
1203 unsigned long flags;
1204 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
1205 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
1206
1207 if (devc->audio_mode)
1208 return 0;
1209
1210 spin_lock_irqsave(&devc->lock,flags);
1211 fs = portc->speed_bits | (portc->format_bits << 5);
1212
1213 if (portc->channels > 1)
1214 fs |= 0x10;
1215
1216 ad_enter_MCE(devc); /* Enables changes to the format select reg */
1217
1218 if ((devc->model == MD_1845) || (devc->model == MD_1845_SSCAPE)) /* Use alternate speed select registers */
1219 {
1220 fs &= 0xf0; /* Mask off the rate select bits */
1221
1222 ad_write(devc, 22, (portc->speed >> 8) & 0xff); /* Speed MSB */
1223 ad_write(devc, 23, portc->speed & 0xff); /* Speed LSB */
1224 }
1225 if (devc->model == MD_4232)
1226 {
1227 tmp = ad_read(devc, 16);
1228 ad_write(devc, 16, tmp | 0x30);
1229 }
1230 if (devc->model == MD_IWAVE)
1231 ad_write(devc, 17, 0xc2); /* Disable variable frequency select */
1232
1233 /*
1234 * If mode >= 2 (CS4231), set I28. It's the capture format register.
1235 */
1236
1237 if (devc->model != MD_1848)
1238 {
1239 old_fs = ad_read(devc, 28);
1240 ad_write(devc, 28, fs);
1241
1242 /*
1243 * Write to I28 starts resynchronization. Wait until it completes.
1244 */
1245
1246 timeout = 0;
1247 while (timeout < 100 && inb(devc->base) != 0x80)
1248 timeout++;
1249
1250 timeout = 0;
1251 while (timeout < 10000 && inb(devc->base) == 0x80)
1252 timeout++;
1253
1254 if (devc->model != MD_1848 && devc->model != MD_1845 && devc->model != MD_1845_SSCAPE)
1255 {
1256 /*
1257 * CS4231 compatible devices don't have separate sampling rate selection
1258 * register for recording an playback. The I8 register is shared so we have to
1259 * set the speed encoding bits of it too.
1260 */
1261 unsigned char tmp = portc->speed_bits | (ad_read(devc, 8) & 0xf0);
1262
1263 ad_write(devc, 8, tmp);
1264 /*
1265 * Write to I8 starts resynchronization. Wait until it completes.
1266 */
1267 timeout = 0;
1268 while (timeout < 100 && inb(devc->base) != 0x80)
1269 timeout++;
1270
1271 timeout = 0;
1272 while (timeout < 10000 && inb(devc->base) == 0x80)
1273 timeout++;
1274 }
1275 }
1276 else
1277 { /* For AD1848 set I8. */
1278
1279 old_fs = ad_read(devc, 8);
1280 ad_write(devc, 8, fs);
1281 /*
1282 * Write to I8 starts resynchronization. Wait until it completes.
1283 */
1284 timeout = 0;
1285 while (timeout < 100 && inb(devc->base) != 0x80)
1286 timeout++;
1287 timeout = 0;
1288 while (timeout < 10000 && inb(devc->base) == 0x80)
1289 timeout++;
1290 }
1291
1292 if (devc->model == MD_4232)
1293 ad_write(devc, 16, tmp & ~0x30);
1294
1295 ad_leave_MCE(devc); /*
1296 * Starts the calibration process.
1297 */
1298 spin_unlock_irqrestore(&devc->lock,flags);
1299 devc->xfer_count = 0;
1300
1301#ifndef EXCLUDE_TIMERS
1302 if (dev == timer_installed && devc->timer_running)
1303 {
1304 if ((fs & 0x01) != (old_fs & 0x01))
1305 {
1306 ad1848_tmr_reprogram(dev);
1307 }
1308 }
1309#endif
1310 ad1848_halt_input(dev);
1311 return 0;
1312}
1313
1314static void ad1848_halt(int dev)
1315{
1316 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
1317 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
1318
1319 unsigned char bits = ad_read(devc, 9);
1320
1321 if (bits & 0x01 && (portc->open_mode & OPEN_WRITE))
1322 ad1848_halt_output(dev);
1323
1324 if (bits & 0x02 && (portc->open_mode & OPEN_READ))
1325 ad1848_halt_input(dev);
1326 devc->audio_mode = 0;
1327}
1328
1329static void ad1848_halt_input(int dev)
1330{
1331 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
1332 unsigned long flags;
1333
1334 if (!(ad_read(devc, 9) & 0x02))
1335 return; /* Capture not enabled */
1336
1337 spin_lock_irqsave(&devc->lock,flags);
1338
1339 ad_mute(devc);
1340
1341 {
1342 int tmout;
1343
1344 if(!isa_dma_bridge_buggy)
1345 disable_dma(audio_devs[dev]->dmap_in->dma);
1346
1347 for (tmout = 0; tmout < 100000; tmout++)
1348 if (ad_read(devc, 11) & 0x10)
1349 break;
1350 ad_write(devc, 9, ad_read(devc, 9) & ~0x02); /* Stop capture */
1351
1352 if(!isa_dma_bridge_buggy)
1353 enable_dma(audio_devs[dev]->dmap_in->dma);
1354 devc->audio_mode &= ~PCM_ENABLE_INPUT;
1355 }
1356
1357 outb(0, io_Status(devc)); /* Clear interrupt status */
1358 outb(0, io_Status(devc)); /* Clear interrupt status */
1359
1360 devc->audio_mode &= ~PCM_ENABLE_INPUT;
1361
1362 spin_unlock_irqrestore(&devc->lock,flags);
1363}
1364
1365static void ad1848_halt_output(int dev)
1366{
1367 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
1368 unsigned long flags;
1369
1370 if (!(ad_read(devc, 9) & 0x01))
1371 return; /* Playback not enabled */
1372
1373 spin_lock_irqsave(&devc->lock,flags);
1374
1375 ad_mute(devc);
1376 {
1377 int tmout;
1378
1379 if(!isa_dma_bridge_buggy)
1380 disable_dma(audio_devs[dev]->dmap_out->dma);
1381
1382 for (tmout = 0; tmout < 100000; tmout++)
1383 if (ad_read(devc, 11) & 0x10)
1384 break;
1385 ad_write(devc, 9, ad_read(devc, 9) & ~0x01); /* Stop playback */
1386
1387 if(!isa_dma_bridge_buggy)
1388 enable_dma(audio_devs[dev]->dmap_out->dma);
1389
1390 devc->audio_mode &= ~PCM_ENABLE_OUTPUT;
1391 }
1392
1393 outb((0), io_Status(devc)); /* Clear interrupt status */
1394 outb((0), io_Status(devc)); /* Clear interrupt status */
1395
1396 devc->audio_mode &= ~PCM_ENABLE_OUTPUT;
1397
1398 spin_unlock_irqrestore(&devc->lock,flags);
1399}
1400
1401static void ad1848_trigger(int dev, int state)
1402{
1403 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
1404 ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
1405 unsigned long flags;
1406 unsigned char tmp, old;
1407
1408 spin_lock_irqsave(&devc->lock,flags);
1409 state &= devc->audio_mode;
1410
1411 tmp = old = ad_read(devc, 9);
1412
1413 if (portc->open_mode & OPEN_READ)
1414 {
1415 if (state & PCM_ENABLE_INPUT)
1416 tmp |= 0x02;
1417 else
1418 tmp &= ~0x02;
1419 }
1420 if (portc->open_mode & OPEN_WRITE)
1421 {
1422 if (state & PCM_ENABLE_OUTPUT)
1423 tmp |= 0x01;
1424 else
1425 tmp &= ~0x01;
1426 }
1427 /* ad_mute(devc); */
1428 if (tmp != old)
1429 {
1430 ad_write(devc, 9, tmp);
1431 ad_unmute(devc);
1432 }
1433 spin_unlock_irqrestore(&devc->lock,flags);
1434}
1435
1436static void ad1848_init_hw(ad1848_info * devc)
1437{
1438 int i;
1439 int *init_values;
1440
1441 /*
1442 * Initial values for the indirect registers of CS4248/AD1848.
1443 */
1444 static int init_values_a[] =
1445 {
1446 0xa8, 0xa8, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00,
1447 0x00, 0x0c, 0x02, 0x00, 0x8a, 0x01, 0x00, 0x00,
1448
1449 /* Positions 16 to 31 just for CS4231/2 and ad1845 */
1450 0x80, 0x00, 0x10, 0x10, 0x00, 0x00, 0x1f, 0x40,
1451 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
1452 };
1453
1454 static int init_values_b[] =
1455 {
1456 /*
1457 Values for the newer chips
1458 Some of the register initialization values were changed. In
1459 order to get rid of the click that preceded PCM playback,
1460 calibration was disabled on the 10th byte. On that same byte,
1461 dual DMA was enabled; on the 11th byte, ADC dithering was
1462 enabled, since that is theoretically desirable; on the 13th
1463 byte, Mode 3 was selected, to enable access to extended
1464 registers.
1465 */
1466 0xa8, 0xa8, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00,
1467 0x00, 0x00, 0x06, 0x00, 0xe0, 0x01, 0x00, 0x00,
1468 0x80, 0x00, 0x10, 0x10, 0x00, 0x00, 0x1f, 0x40,
1469 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
1470 };
1471
1472 /*
1473 * Select initialisation data
1474 */
1475
1476 init_values = init_values_a;
1477 if(devc->model >= MD_4236)
1478 init_values = init_values_b;
1479
1480 for (i = 0; i < 16; i++)
1481 ad_write(devc, i, init_values[i]);
1482
1483
1484 ad_mute(devc); /* Initialize some variables */
1485 ad_unmute(devc); /* Leave it unmuted now */
1486
1487 if (devc->model > MD_1848)
1488 {
1489 if (devc->model == MD_1845_SSCAPE)
1490 ad_write(devc, 12, ad_read(devc, 12) | 0x50);
1491 else
1492 ad_write(devc, 12, ad_read(devc, 12) | 0x40); /* Mode2 = enabled */
1493
1494 if (devc->model == MD_IWAVE)
1495 ad_write(devc, 12, 0x6c); /* Select codec mode 3 */
1496
1497 if (devc->model != MD_1845_SSCAPE)
1498 for (i = 16; i < 32; i++)
1499 ad_write(devc, i, init_values[i]);
1500
1501 if (devc->model == MD_IWAVE)
1502 ad_write(devc, 16, 0x30); /* Playback and capture counters enabled */
1503 }
1504 if (devc->model > MD_1848)
1505 {
1506 if (devc->audio_flags & DMA_DUPLEX)
1507 ad_write(devc, 9, ad_read(devc, 9) & ~0x04); /* Dual DMA mode */
1508 else
1509 ad_write(devc, 9, ad_read(devc, 9) | 0x04); /* Single DMA mode */
1510
1511 if (devc->model == MD_1845 || devc->model == MD_1845_SSCAPE)
1512 ad_write(devc, 27, ad_read(devc, 27) | 0x08); /* Alternate freq select enabled */
1513
1514 if (devc->model == MD_IWAVE)
1515 { /* Some magic Interwave specific initialization */
1516 ad_write(devc, 12, 0x6c); /* Select codec mode 3 */
1517 ad_write(devc, 16, 0x30); /* Playback and capture counters enabled */
1518 ad_write(devc, 17, 0xc2); /* Alternate feature enable */
1519 }
1520 }
1521 else
1522 {
1523 devc->audio_flags &= ~DMA_DUPLEX;
1524 ad_write(devc, 9, ad_read(devc, 9) | 0x04); /* Single DMA mode */
1525 if (soundpro)
1526 ad_write(devc, 12, ad_read(devc, 12) | 0x40); /* Mode2 = enabled */
1527 }
1528
1529 outb((0), io_Status(devc)); /* Clear pending interrupts */
1530
1531 /*
1532 * Toggle the MCE bit. It completes the initialization phase.
1533 */
1534
1535 ad_enter_MCE(devc); /* In case the bit was off */
1536 ad_leave_MCE(devc);
1537
1538 ad1848_mixer_reset(devc);
1539}
1540
1541int ad1848_detect(struct resource *ports, int *ad_flags, int *osp)
1542{
1543 unsigned char tmp;
1544 ad1848_info *devc = &adev_info[nr_ad1848_devs];
1545 unsigned char tmp1 = 0xff, tmp2 = 0xff;
1546 int optiC930 = 0; /* OPTi 82C930 flag */
1547 int interwave = 0;
1548 int ad1847_flag = 0;
1549 int cs4248_flag = 0;
1550 int sscape_flag = 0;
1551 int io_base = ports->start;
1552
1553 int i;
1554
1555 DDB(printk("ad1848_detect(%x)\n", io_base));
1556
1557 if (ad_flags)
1558 {
1559 if (*ad_flags == 0x12345678)
1560 {
1561 interwave = 1;
1562 *ad_flags = 0;
1563 }
1564
1565 if (*ad_flags == 0x87654321)
1566 {
1567 sscape_flag = 1;
1568 *ad_flags = 0;
1569 }
1570
1571 if (*ad_flags == 0x12345677)
1572 {
1573 cs4248_flag = 1;
1574 *ad_flags = 0;
1575 }
1576 }
1577 if (nr_ad1848_devs >= MAX_AUDIO_DEV)
1578 {
1579 printk(KERN_ERR "ad1848 - Too many audio devices\n");
1580 return 0;
1581 }
1582 spin_lock_init(&devc->lock);
1583 devc->base = io_base;
1584 devc->irq_ok = 0;
1585 devc->timer_running = 0;
1586 devc->MCE_bit = 0x40;
1587 devc->irq = 0;
1588 devc->open_mode = 0;
1589 devc->chip_name = devc->name = "AD1848";
1590 devc->model = MD_1848; /* AD1848 or CS4248 */
1591 devc->levels = NULL;
1592 devc->debug_flag = 0;
1593
1594 /*
1595 * Check that the I/O address is in use.
1596 *
1597 * The bit 0x80 of the base I/O port is known to be 0 after the
1598 * chip has performed its power on initialization. Just assume
1599 * this has happened before the OS is starting.
1600 *
1601 * If the I/O address is unused, it typically returns 0xff.
1602 */
1603
1604 if (inb(devc->base) == 0xff)
1605 {
1606 DDB(printk("ad1848_detect: The base I/O address appears to be dead\n"));
1607 }
1608
1609 /*
1610 * Wait for the device to stop initialization
1611 */
1612
1613 DDB(printk("ad1848_detect() - step 0\n"));
1614
1615 for (i = 0; i < 10000000; i++)
1616 {
1617 unsigned char x = inb(devc->base);
1618
1619 if (x == 0xff || !(x & 0x80))
1620 break;
1621 }
1622
1623 DDB(printk("ad1848_detect() - step A\n"));
1624
1625 if (inb(devc->base) == 0x80) /* Not ready. Let's wait */
1626 ad_leave_MCE(devc);
1627
1628 if ((inb(devc->base) & 0x80) != 0x00) /* Not a AD1848 */
1629 {
1630 DDB(printk("ad1848 detect error - step A (%02x)\n", (int) inb(devc->base)));
1631 return 0;
1632 }
1633
1634 /*
1635 * Test if it's possible to change contents of the indirect registers.
1636 * Registers 0 and 1 are ADC volume registers. The bit 0x10 is read only
1637 * so try to avoid using it.
1638 */
1639
1640 DDB(printk("ad1848_detect() - step B\n"));
1641 ad_write(devc, 0, 0xaa);
1642 ad_write(devc, 1, 0x45); /* 0x55 with bit 0x10 clear */
1643
1644 if ((tmp1 = ad_read(devc, 0)) != 0xaa || (tmp2 = ad_read(devc, 1)) != 0x45)
1645 {
1646 if (tmp2 == 0x65) /* AD1847 has couple of bits hardcoded to 1 */
1647 ad1847_flag = 1;
1648 else
1649 {
1650 DDB(printk("ad1848 detect error - step B (%x/%x)\n", tmp1, tmp2));
1651 return 0;
1652 }
1653 }
1654 DDB(printk("ad1848_detect() - step C\n"));
1655 ad_write(devc, 0, 0x45);
1656 ad_write(devc, 1, 0xaa);
1657
1658 if ((tmp1 = ad_read(devc, 0)) != 0x45 || (tmp2 = ad_read(devc, 1)) != 0xaa)
1659 {
1660 if (tmp2 == 0x8a) /* AD1847 has few bits hardcoded to 1 */
1661 ad1847_flag = 1;
1662 else
1663 {
1664 DDB(printk("ad1848 detect error - step C (%x/%x)\n", tmp1, tmp2));
1665 return 0;
1666 }
1667 }
1668
1669 /*
1670 * The indirect register I12 has some read only bits. Let's
1671 * try to change them.
1672 */
1673
1674 DDB(printk("ad1848_detect() - step D\n"));
1675 tmp = ad_read(devc, 12);
1676 ad_write(devc, 12, (~tmp) & 0x0f);
1677
1678 if ((tmp & 0x0f) != ((tmp1 = ad_read(devc, 12)) & 0x0f))
1679 {
1680 DDB(printk("ad1848 detect error - step D (%x)\n", tmp1));
1681 return 0;
1682 }
1683
1684 /*
1685 * NOTE! Last 4 bits of the reg I12 tell the chip revision.
1686 * 0x01=RevB and 0x0A=RevC.
1687 */
1688
1689 /*
1690 * The original AD1848/CS4248 has just 15 indirect registers. This means
1691 * that I0 and I16 should return the same value (etc.).
1692 * However this doesn't work with CS4248. Actually it seems to be impossible
1693 * to detect if the chip is a CS4231 or CS4248.
1694 * Ensure that the Mode2 enable bit of I12 is 0. Otherwise this test fails
1695 * with CS4231.
1696 */
1697
1698 /*
1699 * OPTi 82C930 has mode2 control bit in another place. This test will fail
1700 * with it. Accept this situation as a possible indication of this chip.
1701 */
1702
1703 DDB(printk("ad1848_detect() - step F\n"));
1704 ad_write(devc, 12, 0); /* Mode2=disabled */
1705
1706 for (i = 0; i < 16; i++)
1707 {
1708 if ((tmp1 = ad_read(devc, i)) != (tmp2 = ad_read(devc, i + 16)))
1709 {
1710 DDB(printk("ad1848 detect step F(%d/%x/%x) - OPTi chip???\n", i, tmp1, tmp2));
1711 if (!ad1847_flag)
1712 optiC930 = 1;
1713 break;
1714 }
1715 }
1716
1717 /*
1718 * Try to switch the chip to mode2 (CS4231) by setting the MODE2 bit (0x40).
1719 * The bit 0x80 is always 1 in CS4248 and CS4231.
1720 */
1721
1722 DDB(printk("ad1848_detect() - step G\n"));
1723
1724 if (ad_flags && *ad_flags == 400)
1725 *ad_flags = 0;
1726 else
1727 ad_write(devc, 12, 0x40); /* Set mode2, clear 0x80 */
1728
1729
1730 if (ad_flags)
1731 *ad_flags = 0;
1732
1733 tmp1 = ad_read(devc, 12);
1734 if (tmp1 & 0x80)
1735 {
1736 if (ad_flags)
1737 *ad_flags |= AD_F_CS4248;
1738
1739 devc->chip_name = "CS4248"; /* Our best knowledge just now */
1740 }
1741 if (optiC930 || (tmp1 & 0xc0) == (0x80 | 0x40))
1742 {
1743 /*
1744 * CS4231 detected - is it?
1745 *
1746 * Verify that setting I0 doesn't change I16.
1747 */
1748
1749 DDB(printk("ad1848_detect() - step H\n"));
1750 ad_write(devc, 16, 0); /* Set I16 to known value */
1751
1752 ad_write(devc, 0, 0x45);
1753 if ((tmp1 = ad_read(devc, 16)) != 0x45) /* No change -> CS4231? */
1754 {
1755 ad_write(devc, 0, 0xaa);
1756 if ((tmp1 = ad_read(devc, 16)) == 0xaa) /* Rotten bits? */
1757 {
1758 DDB(printk("ad1848 detect error - step H(%x)\n", tmp1));
1759 return 0;
1760 }
1761
1762 /*
1763 * Verify that some bits of I25 are read only.
1764 */
1765
1766 DDB(printk("ad1848_detect() - step I\n"));
1767 tmp1 = ad_read(devc, 25); /* Original bits */
1768 ad_write(devc, 25, ~tmp1); /* Invert all bits */
1769 if ((ad_read(devc, 25) & 0xe7) == (tmp1 & 0xe7))
1770 {
1771 int id;
1772
1773 /*
1774 * It's at least CS4231
1775 */
1776
1777 devc->chip_name = "CS4231";
1778 devc->model = MD_4231;
1779
1780 /*
1781 * It could be an AD1845 or CS4231A as well.
1782 * CS4231 and AD1845 report the same revision info in I25
1783 * while the CS4231A reports different.
1784 */
1785
1786 id = ad_read(devc, 25);
1787 if ((id & 0xe7) == 0x80) /* Device busy??? */
1788 id = ad_read(devc, 25);
1789 if ((id & 0xe7) == 0x80) /* Device still busy??? */
1790 id = ad_read(devc, 25);
1791 DDB(printk("ad1848_detect() - step J (%02x/%02x)\n", id, ad_read(devc, 25)));
1792
1793 if ((id & 0xe7) == 0x80) {
1794 /*
1795 * It must be a CS4231 or AD1845. The register I23 of
1796 * CS4231 is undefined and it appears to be read only.
1797 * AD1845 uses I23 for setting sample rate. Assume
1798 * the chip is AD1845 if I23 is changeable.
1799 */
1800
1801 unsigned char tmp = ad_read(devc, 23);
1802 ad_write(devc, 23, ~tmp);
1803
1804 if (interwave)
1805 {
1806 devc->model = MD_IWAVE;
1807 devc->chip_name = "IWave";
1808 }
1809 else if (ad_read(devc, 23) != tmp) /* AD1845 ? */
1810 {
1811 devc->chip_name = "AD1845";
1812 devc->model = MD_1845;
1813 }
1814 else if (cs4248_flag)
1815 {
1816 if (ad_flags)
1817 *ad_flags |= AD_F_CS4248;
1818 devc->chip_name = "CS4248";
1819 devc->model = MD_1848;
1820 ad_write(devc, 12, ad_read(devc, 12) & ~0x40); /* Mode2 off */
1821 }
1822 ad_write(devc, 23, tmp); /* Restore */
1823 }
1824 else
1825 {
1826 switch (id & 0x1f) {
1827 case 3: /* CS4236/CS4235/CS42xB/CS4239 */
1828 {
1829 int xid;
1830 ad_write(devc, 12, ad_read(devc, 12) | 0x60); /* switch to mode 3 */
1831 ad_write(devc, 23, 0x9c); /* select extended register 25 */
1832 xid = inb(io_Indexed_Data(devc));
1833 ad_write(devc, 12, ad_read(devc, 12) & ~0x60); /* back to mode 0 */
1834 switch (xid & 0x1f)
1835 {
1836 case 0x00:
1837 devc->chip_name = "CS4237B(B)";
1838 devc->model = MD_42xB;
1839 break;
1840 case 0x08:
1841 /* Seems to be a 4238 ?? */
1842 devc->chip_name = "CS4238";
1843 devc->model = MD_42xB;
1844 break;
1845 case 0x09:
1846 devc->chip_name = "CS4238B";
1847 devc->model = MD_42xB;
1848 break;
1849 case 0x0b:
1850 devc->chip_name = "CS4236B";
1851 devc->model = MD_4236;
1852 break;
1853 case 0x10:
1854 devc->chip_name = "CS4237B";
1855 devc->model = MD_42xB;
1856 break;
1857 case 0x1d:
1858 devc->chip_name = "CS4235";
1859 devc->model = MD_4235;
1860 break;
1861 case 0x1e:
1862 devc->chip_name = "CS4239";
1863 devc->model = MD_4239;
1864 break;
1865 default:
1866 printk("Chip ident is %X.\n", xid&0x1F);
1867 devc->chip_name = "CS42xx";
1868 devc->model = MD_4232;
1869 break;
1870 }
1871 }
1872 break;
1873
1874 case 2: /* CS4232/CS4232A */
1875 devc->chip_name = "CS4232";
1876 devc->model = MD_4232;
1877 break;
1878
1879 case 0:
1880 if ((id & 0xe0) == 0xa0)
1881 {
1882 devc->chip_name = "CS4231A";
1883 devc->model = MD_4231A;
1884 }
1885 else
1886 {
1887 devc->chip_name = "CS4321";
1888 devc->model = MD_4231;
1889 }
1890 break;
1891
1892 default: /* maybe */
1893 DDB(printk("ad1848: I25 = %02x/%02x\n", ad_read(devc, 25), ad_read(devc, 25) & 0xe7));
1894 if (optiC930)
1895 {
1896 devc->chip_name = "82C930";
1897 devc->model = MD_C930;
1898 }
1899 else
1900 {
1901 devc->chip_name = "CS4231";
1902 devc->model = MD_4231;
1903 }
1904 }
1905 }
1906 }
1907 ad_write(devc, 25, tmp1); /* Restore bits */
1908
1909 DDB(printk("ad1848_detect() - step K\n"));
1910 }
1911 } else if (tmp1 == 0x0a) {
1912 /*
1913 * Is it perhaps a SoundPro CMI8330?
1914 * If so, then we should be able to change indirect registers
1915 * greater than I15 after activating MODE2, even though reading
1916 * back I12 does not show it.
1917 */
1918
1919 /*
1920 * Let's try comparing register values
1921 */
1922 for (i = 0; i < 16; i++) {
1923 if ((tmp1 = ad_read(devc, i)) != (tmp2 = ad_read(devc, i + 16))) {
1924 DDB(printk("ad1848 detect step H(%d/%x/%x) - SoundPro chip?\n", i, tmp1, tmp2));
1925 soundpro = 1;
1926 devc->chip_name = "SoundPro CMI 8330";
1927 break;
1928 }
1929 }
1930 }
1931
1932 DDB(printk("ad1848_detect() - step L\n"));
1933 if (ad_flags)
1934 {
1935 if (devc->model != MD_1848)
1936 *ad_flags |= AD_F_CS4231;
1937 }
1938 DDB(printk("ad1848_detect() - Detected OK\n"));
1939
1940 if (devc->model == MD_1848 && ad1847_flag)
1941 devc->chip_name = "AD1847";
1942
1943
1944 if (sscape_flag == 1)
1945 devc->model = MD_1845_SSCAPE;
1946
1947 return 1;
1948}
1949
1950int ad1848_init (char *name, struct resource *ports, int irq, int dma_playback,
1951 int dma_capture, int share_dma, int *osp, struct module *owner)
1952{
1953 /*
1954 * NOTE! If irq < 0, there is another driver which has allocated the IRQ
1955 * so that this driver doesn't need to allocate/deallocate it.
1956 * The actually used IRQ is ABS(irq).
1957 */
1958
1959 int my_dev;
1960 char dev_name[100];
1961 int e;
1962
1963 ad1848_info *devc = &adev_info[nr_ad1848_devs];
1964
1965 ad1848_port_info *portc = NULL;
1966
1967 devc->irq = (irq > 0) ? irq : 0;
1968 devc->open_mode = 0;
1969 devc->timer_ticks = 0;
1970 devc->dma1 = dma_playback;
1971 devc->dma2 = dma_capture;
1972 devc->subtype = cfg.card_subtype;
1973 devc->audio_flags = DMA_AUTOMODE;
1974 devc->playback_dev = devc->record_dev = 0;
1975 if (name != NULL)
1976 devc->name = name;
1977
1978 if (name != NULL && name[0] != 0)
1979 sprintf(dev_name,
1980 "%s (%s)", name, devc->chip_name);
1981 else
1982 sprintf(dev_name,
1983 "Generic audio codec (%s)", devc->chip_name);
1984
1985 rename_region(ports, devc->name);
1986
1987 conf_printf2(dev_name, devc->base, devc->irq, dma_playback, dma_capture);
1988
1989 if (devc->model == MD_1848 || devc->model == MD_C930)
1990 devc->audio_flags |= DMA_HARDSTOP;
1991
1992 if (devc->model > MD_1848)
1993 {
1994 if (devc->dma1 == devc->dma2 || devc->dma2 == -1 || devc->dma1 == -1)
1995 devc->audio_flags &= ~DMA_DUPLEX;
1996 else
1997 devc->audio_flags |= DMA_DUPLEX;
1998 }
1999
2000 portc = (ad1848_port_info *) kmalloc(sizeof(ad1848_port_info), GFP_KERNEL);
2001 if(portc==NULL) {
2002 release_region(devc->base, 4);
2003 return -1;
2004 }
2005
2006 if ((my_dev = sound_install_audiodrv(AUDIO_DRIVER_VERSION,
2007 dev_name,
2008 &ad1848_audio_driver,
2009 sizeof(struct audio_driver),
2010 devc->audio_flags,
2011 ad_format_mask[devc->model],
2012 devc,
2013 dma_playback,
2014 dma_capture)) < 0)
2015 {
2016 release_region(devc->base, 4);
2017 kfree(portc);
2018 return -1;
2019 }
2020
2021 audio_devs[my_dev]->portc = portc;
2022 audio_devs[my_dev]->mixer_dev = -1;
2023 if (owner)
2024 audio_devs[my_dev]->d->owner = owner;
2025 memset((char *) portc, 0, sizeof(*portc));
2026
2027 nr_ad1848_devs++;
2028
2029 devc->pmdev = pm_register(PM_ISA_DEV, my_dev, ad1848_pm_callback);
2030 if (devc->pmdev)
2031 devc->pmdev->data = devc;
2032
2033 ad1848_init_hw(devc);
2034
2035 if (irq > 0)
2036 {
2037 devc->dev_no = my_dev;
2038 if (request_irq(devc->irq, adintr, 0, devc->name, (void *)my_dev) < 0)
2039 {
2040 printk(KERN_WARNING "ad1848: Unable to allocate IRQ\n");
2041 /* Don't free it either then.. */
2042 devc->irq = 0;
2043 }
2044 if (capabilities[devc->model].flags & CAP_F_TIMER)
2045 {
2046#ifndef CONFIG_SMP
2047 int x;
2048 unsigned char tmp = ad_read(devc, 16);
2049#endif
2050
2051 devc->timer_ticks = 0;
2052
2053 ad_write(devc, 21, 0x00); /* Timer MSB */
2054 ad_write(devc, 20, 0x10); /* Timer LSB */
2055#ifndef CONFIG_SMP
2056 ad_write(devc, 16, tmp | 0x40); /* Enable timer */
2057 for (x = 0; x < 100000 && devc->timer_ticks == 0; x++);
2058 ad_write(devc, 16, tmp & ~0x40); /* Disable timer */
2059
2060 if (devc->timer_ticks == 0)
2061 printk(KERN_WARNING "ad1848: Interrupt test failed (IRQ%d)\n", irq);
2062 else
2063 {
2064 DDB(printk("Interrupt test OK\n"));
2065 devc->irq_ok = 1;
2066 }
2067#else
2068 devc->irq_ok = 1;
2069#endif
2070 }
2071 else
2072 devc->irq_ok = 1; /* Couldn't test. assume it's OK */
2073 } else if (irq < 0)
2074 irq2dev[-irq] = devc->dev_no = my_dev;
2075
2076#ifndef EXCLUDE_TIMERS
2077 if ((capabilities[devc->model].flags & CAP_F_TIMER) &&
2078 devc->irq_ok)
2079 ad1848_tmr_install(my_dev);
2080#endif
2081
2082 if (!share_dma)
2083 {
2084 if (sound_alloc_dma(dma_playback, devc->name))
2085 printk(KERN_WARNING "ad1848.c: Can't allocate DMA%d\n", dma_playback);
2086
2087 if (dma_capture != dma_playback)
2088 if (sound_alloc_dma(dma_capture, devc->name))
2089 printk(KERN_WARNING "ad1848.c: Can't allocate DMA%d\n", dma_capture);
2090 }
2091
2092 if ((e = sound_install_mixer(MIXER_DRIVER_VERSION,
2093 dev_name,
2094 &ad1848_mixer_operations,
2095 sizeof(struct mixer_operations),
2096 devc)) >= 0)
2097 {
2098 audio_devs[my_dev]->mixer_dev = e;
2099 if (owner)
2100 mixer_devs[e]->owner = owner;
2101 }
2102 return my_dev;
2103}
2104
2105int ad1848_control(int cmd, int arg)
2106{
2107 ad1848_info *devc;
2108 unsigned long flags;
2109
2110 if (nr_ad1848_devs < 1)
2111 return -ENODEV;
2112
2113 devc = &adev_info[nr_ad1848_devs - 1];
2114
2115 switch (cmd)
2116 {
2117 case AD1848_SET_XTAL: /* Change clock frequency of AD1845 (only ) */
2118 if (devc->model != MD_1845 || devc->model != MD_1845_SSCAPE)
2119 return -EINVAL;
2120 spin_lock_irqsave(&devc->lock,flags);
2121 ad_enter_MCE(devc);
2122 ad_write(devc, 29, (ad_read(devc, 29) & 0x1f) | (arg << 5));
2123 ad_leave_MCE(devc);
2124 spin_unlock_irqrestore(&devc->lock,flags);
2125 break;
2126
2127 case AD1848_MIXER_REROUTE:
2128 {
2129 int o = (arg >> 8) & 0xff;
2130 int n = arg & 0xff;
2131
2132 if (o < 0 || o >= SOUND_MIXER_NRDEVICES)
2133 return -EINVAL;
2134
2135 if (!(devc->supported_devices & (1 << o)) &&
2136 !(devc->supported_rec_devices & (1 << o)))
2137 return -EINVAL;
2138
2139 if (n == SOUND_MIXER_NONE)
2140 { /* Just hide this control */
2141 ad1848_mixer_set(devc, o, 0); /* Shut up it */
2142 devc->supported_devices &= ~(1 << o);
2143 devc->supported_rec_devices &= ~(1 << o);
2144 break;
2145 }
2146
2147 /* Make the mixer control identified by o to appear as n */
2148 if (n < 0 || n >= SOUND_MIXER_NRDEVICES)
2149 return -EINVAL;
2150
2151 devc->mixer_reroute[n] = o; /* Rename the control */
2152 if (devc->supported_devices & (1 << o))
2153 devc->supported_devices |= (1 << n);
2154 if (devc->supported_rec_devices & (1 << o))
2155 devc->supported_rec_devices |= (1 << n);
2156
2157 devc->supported_devices &= ~(1 << o);
2158 devc->supported_rec_devices &= ~(1 << o);
2159 }
2160 break;
2161 }
2162 return 0;
2163}
2164
2165void ad1848_unload(int io_base, int irq, int dma_playback, int dma_capture, int share_dma)
2166{
2167 int i, mixer, dev = 0;
2168 ad1848_info *devc = NULL;
2169
2170 for (i = 0; devc == NULL && i < nr_ad1848_devs; i++)
2171 {
2172 if (adev_info[i].base == io_base)
2173 {
2174 devc = &adev_info[i];
2175 dev = devc->dev_no;
2176 }
2177 }
2178
2179 if (devc != NULL)
2180 {
2181 if(audio_devs[dev]->portc!=NULL)
2182 kfree(audio_devs[dev]->portc);
2183 release_region(devc->base, 4);
2184
2185 if (!share_dma)
2186 {
2187 if (devc->irq > 0) /* There is no point in freeing irq, if it wasn't allocated */
2188 free_irq(devc->irq, (void *)devc->dev_no);
2189
2190 sound_free_dma(dma_playback);
2191
2192 if (dma_playback != dma_capture)
2193 sound_free_dma(dma_capture);
2194
2195 }
2196 mixer = audio_devs[devc->dev_no]->mixer_dev;
2197 if(mixer>=0)
2198 sound_unload_mixerdev(mixer);
2199
2200 if (devc->pmdev)
2201 pm_unregister(devc->pmdev);
2202
2203 nr_ad1848_devs--;
2204 for ( ; i < nr_ad1848_devs ; i++)
2205 adev_info[i] = adev_info[i+1];
2206 }
2207 else
2208 printk(KERN_ERR "ad1848: Can't find device to be unloaded. Base=%x\n", io_base);
2209}
2210
2211irqreturn_t adintr(int irq, void *dev_id, struct pt_regs *dummy)
2212{
2213 unsigned char status;
2214 ad1848_info *devc;
2215 int dev;
2216 int alt_stat = 0xff;
2217 unsigned char c930_stat = 0;
2218 int cnt = 0;
2219
2220 dev = (int)dev_id;
2221 devc = (ad1848_info *) audio_devs[dev]->devc;
2222
2223interrupt_again: /* Jump back here if int status doesn't reset */
2224
2225 status = inb(io_Status(devc));
2226
2227 if (status == 0x80)
2228 printk(KERN_DEBUG "adintr: Why?\n");
2229 if (devc->model == MD_1848)
2230 outb((0), io_Status(devc)); /* Clear interrupt status */
2231
2232 if (status & 0x01)
2233 {
2234 if (devc->model == MD_C930)
2235 { /* 82C930 has interrupt status register in MAD16 register MC11 */
2236
2237 spin_lock(&devc->lock);
2238
2239 /* 0xe0e is C930 address port
2240 * 0xe0f is C930 data port
2241 */
2242 outb(11, 0xe0e);
2243 c930_stat = inb(0xe0f);
2244 outb((~c930_stat), 0xe0f);
2245
2246 spin_unlock(&devc->lock);
2247
2248 alt_stat = (c930_stat << 2) & 0x30;
2249 }
2250 else if (devc->model != MD_1848)
2251 {
2252 spin_lock(&devc->lock);
2253 alt_stat = ad_read(devc, 24);
2254 ad_write(devc, 24, ad_read(devc, 24) & ~alt_stat); /* Selective ack */
2255 spin_unlock(&devc->lock);
2256 }
2257
2258 if ((devc->open_mode & OPEN_READ) && (devc->audio_mode & PCM_ENABLE_INPUT) && (alt_stat & 0x20))
2259 {
2260 DMAbuf_inputintr(devc->record_dev);
2261 }
2262 if ((devc->open_mode & OPEN_WRITE) && (devc->audio_mode & PCM_ENABLE_OUTPUT) &&
2263 (alt_stat & 0x10))
2264 {
2265 DMAbuf_outputintr(devc->playback_dev, 1);
2266 }
2267 if (devc->model != MD_1848 && (alt_stat & 0x40)) /* Timer interrupt */
2268 {
2269 devc->timer_ticks++;
2270#ifndef EXCLUDE_TIMERS
2271 if (timer_installed == dev && devc->timer_running)
2272 sound_timer_interrupt();
2273#endif
2274 }
2275 }
2276/*
2277 * Sometimes playback or capture interrupts occur while a timer interrupt
2278 * is being handled. The interrupt will not be retriggered if we don't
2279 * handle it now. Check if an interrupt is still pending and restart
2280 * the handler in this case.
2281 */
2282 if (inb(io_Status(devc)) & 0x01 && cnt++ < 4)
2283 {
2284 goto interrupt_again;
2285 }
2286 return IRQ_HANDLED;
2287}
2288
2289/*
2290 * Experimental initialization sequence for the integrated sound system
2291 * of the Compaq Deskpro M.
2292 */
2293
2294static int init_deskpro_m(struct address_info *hw_config)
2295{
2296 unsigned char tmp;
2297
2298 if ((tmp = inb(0xc44)) == 0xff)
2299 {
2300 DDB(printk("init_deskpro_m: Dead port 0xc44\n"));
2301 return 0;
2302 }
2303
2304 outb(0x10, 0xc44);
2305 outb(0x40, 0xc45);
2306 outb(0x00, 0xc46);
2307 outb(0xe8, 0xc47);
2308 outb(0x14, 0xc44);
2309 outb(0x40, 0xc45);
2310 outb(0x00, 0xc46);
2311 outb(0xe8, 0xc47);
2312 outb(0x10, 0xc44);
2313
2314 return 1;
2315}
2316
2317/*
2318 * Experimental initialization sequence for the integrated sound system
2319 * of Compaq Deskpro XL.
2320 */
2321
2322static int init_deskpro(struct address_info *hw_config)
2323{
2324 unsigned char tmp;
2325
2326 if ((tmp = inb(0xc44)) == 0xff)
2327 {
2328 DDB(printk("init_deskpro: Dead port 0xc44\n"));
2329 return 0;
2330 }
2331 outb((tmp | 0x04), 0xc44); /* Select bank 1 */
2332 if (inb(0xc44) != 0x04)
2333 {
2334 DDB(printk("init_deskpro: Invalid bank1 signature in port 0xc44\n"));
2335 return 0;
2336 }
2337 /*
2338 * OK. It looks like a Deskpro so let's proceed.
2339 */
2340
2341 /*
2342 * I/O port 0xc44 Audio configuration register.
2343 *
2344 * bits 0xc0: Audio revision bits
2345 * 0x00 = Compaq Business Audio
2346 * 0x40 = MS Sound System Compatible (reset default)
2347 * 0x80 = Reserved
2348 * 0xc0 = Reserved
2349 * bit 0x20: No Wait State Enable
2350 * 0x00 = Disabled (reset default, DMA mode)
2351 * 0x20 = Enabled (programmed I/O mode)
2352 * bit 0x10: MS Sound System Decode Enable
2353 * 0x00 = Decoding disabled (reset default)
2354 * 0x10 = Decoding enabled
2355 * bit 0x08: FM Synthesis Decode Enable
2356 * 0x00 = Decoding Disabled (reset default)
2357 * 0x08 = Decoding enabled
2358 * bit 0x04 Bank select
2359 * 0x00 = Bank 0
2360 * 0x04 = Bank 1
2361 * bits 0x03 MSS Base address
2362 * 0x00 = 0x530 (reset default)
2363 * 0x01 = 0x604
2364 * 0x02 = 0xf40
2365 * 0x03 = 0xe80
2366 */
2367
2368#ifdef DEBUGXL
2369 /* Debug printing */
2370 printk("Port 0xc44 (before): ");
2371 outb((tmp & ~0x04), 0xc44);
2372 printk("%02x ", inb(0xc44));
2373 outb((tmp | 0x04), 0xc44);
2374 printk("%02x\n", inb(0xc44));
2375#endif
2376
2377 /* Set bank 1 of the register */
2378 tmp = 0x58; /* MSS Mode, MSS&FM decode enabled */
2379
2380 switch (hw_config->io_base)
2381 {
2382 case 0x530:
2383 tmp |= 0x00;
2384 break;
2385 case 0x604:
2386 tmp |= 0x01;
2387 break;
2388 case 0xf40:
2389 tmp |= 0x02;
2390 break;
2391 case 0xe80:
2392 tmp |= 0x03;
2393 break;
2394 default:
2395 DDB(printk("init_deskpro: Invalid MSS port %x\n", hw_config->io_base));
2396 return 0;
2397 }
2398 outb((tmp & ~0x04), 0xc44); /* Write to bank=0 */
2399
2400#ifdef DEBUGXL
2401 /* Debug printing */
2402 printk("Port 0xc44 (after): ");
2403 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2404 printk("%02x ", inb(0xc44));
2405 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2406 printk("%02x\n", inb(0xc44));
2407#endif
2408
2409 /*
2410 * I/O port 0xc45 FM Address Decode/MSS ID Register.
2411 *
2412 * bank=0, bits 0xfe: FM synthesis Decode Compare bits 7:1 (default=0x88)
2413 * bank=0, bit 0x01: SBIC Power Control Bit
2414 * 0x00 = Powered up
2415 * 0x01 = Powered down
2416 * bank=1, bits 0xfc: MSS ID (default=0x40)
2417 */
2418
2419#ifdef DEBUGXL
2420 /* Debug printing */
2421 printk("Port 0xc45 (before): ");
2422 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2423 printk("%02x ", inb(0xc45));
2424 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2425 printk("%02x\n", inb(0xc45));
2426#endif
2427
2428 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2429 outb((0x88), 0xc45); /* FM base 7:0 = 0x88 */
2430 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2431 outb((0x10), 0xc45); /* MSS ID = 0x10 (MSS port returns 0x04) */
2432
2433#ifdef DEBUGXL
2434 /* Debug printing */
2435 printk("Port 0xc45 (after): ");
2436 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2437 printk("%02x ", inb(0xc45));
2438 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2439 printk("%02x\n", inb(0xc45));
2440#endif
2441
2442
2443 /*
2444 * I/O port 0xc46 FM Address Decode/Address ASIC Revision Register.
2445 *
2446 * bank=0, bits 0xff: FM synthesis Decode Compare bits 15:8 (default=0x03)
2447 * bank=1, bits 0xff: Audio addressing ASIC id
2448 */
2449
2450#ifdef DEBUGXL
2451 /* Debug printing */
2452 printk("Port 0xc46 (before): ");
2453 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2454 printk("%02x ", inb(0xc46));
2455 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2456 printk("%02x\n", inb(0xc46));
2457#endif
2458
2459 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2460 outb((0x03), 0xc46); /* FM base 15:8 = 0x03 */
2461 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2462 outb((0x11), 0xc46); /* ASIC ID = 0x11 */
2463
2464#ifdef DEBUGXL
2465 /* Debug printing */
2466 printk("Port 0xc46 (after): ");
2467 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2468 printk("%02x ", inb(0xc46));
2469 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2470 printk("%02x\n", inb(0xc46));
2471#endif
2472
2473 /*
2474 * I/O port 0xc47 FM Address Decode Register.
2475 *
2476 * bank=0, bits 0xff: Decode enable selection for various FM address bits
2477 * bank=1, bits 0xff: Reserved
2478 */
2479
2480#ifdef DEBUGXL
2481 /* Debug printing */
2482 printk("Port 0xc47 (before): ");
2483 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2484 printk("%02x ", inb(0xc47));
2485 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2486 printk("%02x\n", inb(0xc47));
2487#endif
2488
2489 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2490 outb((0x7c), 0xc47); /* FM decode enable bits = 0x7c */
2491 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2492 outb((0x00), 0xc47); /* Reserved bank1 = 0x00 */
2493
2494#ifdef DEBUGXL
2495 /* Debug printing */
2496 printk("Port 0xc47 (after): ");
2497 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2498 printk("%02x ", inb(0xc47));
2499 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2500 printk("%02x\n", inb(0xc47));
2501#endif
2502
2503 /*
2504 * I/O port 0xc6f = Audio Disable Function Register
2505 */
2506
2507#ifdef DEBUGXL
2508 printk("Port 0xc6f (before) = %02x\n", inb(0xc6f));
2509#endif
2510
2511 outb((0x80), 0xc6f);
2512
2513#ifdef DEBUGXL
2514 printk("Port 0xc6f (after) = %02x\n", inb(0xc6f));
2515#endif
2516
2517 return 1;
2518}
2519
2520int probe_ms_sound(struct address_info *hw_config, struct resource *ports)
2521{
2522 unsigned char tmp;
2523
2524 DDB(printk("Entered probe_ms_sound(%x, %d)\n", hw_config->io_base, hw_config->card_subtype));
2525
2526 if (hw_config->card_subtype == 1) /* Has no IRQ/DMA registers */
2527 {
2528 /* check_opl3(0x388, hw_config); */
2529 return ad1848_detect(ports, NULL, hw_config->osp);
2530 }
2531
2532 if (deskpro_xl && hw_config->card_subtype == 2) /* Compaq Deskpro XL */
2533 {
2534 if (!init_deskpro(hw_config))
2535 return 0;
2536 }
2537
2538 if (deskpro_m) /* Compaq Deskpro M */
2539 {
2540 if (!init_deskpro_m(hw_config))
2541 return 0;
2542 }
2543
2544 /*
2545 * Check if the IO port returns valid signature. The original MS Sound
2546 * system returns 0x04 while some cards (AudioTrix Pro for example)
2547 * return 0x00 or 0x0f.
2548 */
2549
2550 if ((tmp = inb(hw_config->io_base + 3)) == 0xff) /* Bus float */
2551 {
2552 int ret;
2553
2554 DDB(printk("I/O address is inactive (%x)\n", tmp));
2555 if (!(ret = ad1848_detect(ports, NULL, hw_config->osp)))
2556 return 0;
2557 return 1;
2558 }
2559 DDB(printk("MSS signature = %x\n", tmp & 0x3f));
2560 if ((tmp & 0x3f) != 0x04 &&
2561 (tmp & 0x3f) != 0x0f &&
2562 (tmp & 0x3f) != 0x00)
2563 {
2564 int ret;
2565
2566 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)));
2567 DDB(printk("Trying to detect codec anyway but IRQ/DMA may not work\n"));
2568 if (!(ret = ad1848_detect(ports, NULL, hw_config->osp)))
2569 return 0;
2570
2571 hw_config->card_subtype = 1;
2572 return 1;
2573 }
2574 if ((hw_config->irq != 5) &&
2575 (hw_config->irq != 7) &&
2576 (hw_config->irq != 9) &&
2577 (hw_config->irq != 10) &&
2578 (hw_config->irq != 11) &&
2579 (hw_config->irq != 12))
2580 {
2581 printk(KERN_ERR "MSS: Bad IRQ %d\n", hw_config->irq);
2582 return 0;
2583 }
2584 if (hw_config->dma != 0 && hw_config->dma != 1 && hw_config->dma != 3)
2585 {
2586 printk(KERN_ERR "MSS: Bad DMA %d\n", hw_config->dma);
2587 return 0;
2588 }
2589 /*
2590 * Check that DMA0 is not in use with a 8 bit board.
2591 */
2592
2593 if (hw_config->dma == 0 && inb(hw_config->io_base + 3) & 0x80)
2594 {
2595 printk(KERN_ERR "MSS: Can't use DMA0 with a 8 bit card/slot\n");
2596 return 0;
2597 }
2598 if (hw_config->irq > 7 && hw_config->irq != 9 && inb(hw_config->io_base + 3) & 0x80)
2599 {
2600 printk(KERN_ERR "MSS: Can't use IRQ%d with a 8 bit card/slot\n", hw_config->irq);
2601 return 0;
2602 }
2603 return ad1848_detect(ports, NULL, hw_config->osp);
2604}
2605
2606void attach_ms_sound(struct address_info *hw_config, struct resource *ports, struct module *owner)
2607{
2608 static signed char interrupt_bits[12] =
2609 {
2610 -1, -1, -1, -1, -1, 0x00, -1, 0x08, -1, 0x10, 0x18, 0x20
2611 };
2612 signed char bits;
2613 char dma2_bit = 0;
2614
2615 static char dma_bits[4] =
2616 {
2617 1, 2, 0, 3
2618 };
2619
2620 int config_port = hw_config->io_base + 0;
2621 int version_port = hw_config->io_base + 3;
2622 int dma = hw_config->dma;
2623 int dma2 = hw_config->dma2;
2624
2625 if (hw_config->card_subtype == 1) /* Has no IRQ/DMA registers */
2626 {
2627 hw_config->slots[0] = ad1848_init("MS Sound System", ports,
2628 hw_config->irq,
2629 hw_config->dma,
2630 hw_config->dma2, 0,
2631 hw_config->osp,
2632 owner);
2633 return;
2634 }
2635 /*
2636 * Set the IRQ and DMA addresses.
2637 */
2638
2639 bits = interrupt_bits[hw_config->irq];
2640 if (bits == -1)
2641 {
2642 printk(KERN_ERR "MSS: Bad IRQ %d\n", hw_config->irq);
2643 release_region(ports->start, 4);
2644 release_region(ports->start - 4, 4);
2645 return;
2646 }
2647 outb((bits | 0x40), config_port);
2648 if ((inb(version_port) & 0x40) == 0)
2649 printk(KERN_ERR "[MSS: IRQ Conflict?]\n");
2650
2651/*
2652 * Handle the capture DMA channel
2653 */
2654
2655 if (dma2 != -1 && dma2 != dma)
2656 {
2657 if (!((dma == 0 && dma2 == 1) ||
2658 (dma == 1 && dma2 == 0) ||
2659 (dma == 3 && dma2 == 0)))
2660 { /* Unsupported combination. Try to swap channels */
2661 int tmp = dma;
2662
2663 dma = dma2;
2664 dma2 = tmp;
2665 }
2666 if ((dma == 0 && dma2 == 1) ||
2667 (dma == 1 && dma2 == 0) ||
2668 (dma == 3 && dma2 == 0))
2669 {
2670 dma2_bit = 0x04; /* Enable capture DMA */
2671 }
2672 else
2673 {
2674 printk(KERN_WARNING "MSS: Invalid capture DMA\n");
2675 dma2 = dma;
2676 }
2677 }
2678 else
2679 {
2680 dma2 = dma;
2681 }
2682
2683 hw_config->dma = dma;
2684 hw_config->dma2 = dma2;
2685
2686 outb((bits | dma_bits[dma] | dma2_bit), config_port); /* Write IRQ+DMA setup */
2687
2688 hw_config->slots[0] = ad1848_init("MS Sound System", ports,
2689 hw_config->irq,
2690 dma, dma2, 0,
2691 hw_config->osp,
2692 THIS_MODULE);
2693}
2694
2695void unload_ms_sound(struct address_info *hw_config)
2696{
2697 ad1848_unload(hw_config->io_base + 4,
2698 hw_config->irq,
2699 hw_config->dma,
2700 hw_config->dma2, 0);
2701 sound_unload_audiodev(hw_config->slots[0]);
2702 release_region(hw_config->io_base, 4);
2703}
2704
2705#ifndef EXCLUDE_TIMERS
2706
2707/*
2708 * Timer stuff (for /dev/music).
2709 */
2710
2711static unsigned int current_interval;
2712
2713static unsigned int ad1848_tmr_start(int dev, unsigned int usecs)
2714{
2715 unsigned long flags;
2716 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
2717 unsigned long xtal_nsecs; /* nanoseconds per xtal oscillator tick */
2718 unsigned long divider;
2719
2720 spin_lock_irqsave(&devc->lock,flags);
2721
2722 /*
2723 * Length of the timer interval (in nanoseconds) depends on the
2724 * selected crystal oscillator. Check this from bit 0x01 of I8.
2725 *
2726 * AD1845 has just one oscillator which has cycle time of 10.050 us
2727 * (when a 24.576 MHz xtal oscillator is used).
2728 *
2729 * Convert requested interval to nanoseconds before computing
2730 * the timer divider.
2731 */
2732
2733 if (devc->model == MD_1845 || devc->model == MD_1845_SSCAPE)
2734 xtal_nsecs = 10050;
2735 else if (ad_read(devc, 8) & 0x01)
2736 xtal_nsecs = 9920;
2737 else
2738 xtal_nsecs = 9969;
2739
2740 divider = (usecs * 1000 + xtal_nsecs / 2) / xtal_nsecs;
2741
2742 if (divider < 100) /* Don't allow shorter intervals than about 1ms */
2743 divider = 100;
2744
2745 if (divider > 65535) /* Overflow check */
2746 divider = 65535;
2747
2748 ad_write(devc, 21, (divider >> 8) & 0xff); /* Set upper bits */
2749 ad_write(devc, 20, divider & 0xff); /* Set lower bits */
2750 ad_write(devc, 16, ad_read(devc, 16) | 0x40); /* Start the timer */
2751 devc->timer_running = 1;
2752 spin_unlock_irqrestore(&devc->lock,flags);
2753
2754 return current_interval = (divider * xtal_nsecs + 500) / 1000;
2755}
2756
2757static void ad1848_tmr_reprogram(int dev)
2758{
2759 /*
2760 * Audio driver has changed sampling rate so that a different xtal
2761 * oscillator was selected. We have to reprogram the timer rate.
2762 */
2763
2764 ad1848_tmr_start(dev, current_interval);
2765 sound_timer_syncinterval(current_interval);
2766}
2767
2768static void ad1848_tmr_disable(int dev)
2769{
2770 unsigned long flags;
2771 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
2772
2773 spin_lock_irqsave(&devc->lock,flags);
2774 ad_write(devc, 16, ad_read(devc, 16) & ~0x40);
2775 devc->timer_running = 0;
2776 spin_unlock_irqrestore(&devc->lock,flags);
2777}
2778
2779static void ad1848_tmr_restart(int dev)
2780{
2781 unsigned long flags;
2782 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
2783
2784 if (current_interval == 0)
2785 return;
2786
2787 spin_lock_irqsave(&devc->lock,flags);
2788 ad_write(devc, 16, ad_read(devc, 16) | 0x40);
2789 devc->timer_running = 1;
2790 spin_unlock_irqrestore(&devc->lock,flags);
2791}
2792
2793static struct sound_lowlev_timer ad1848_tmr =
2794{
2795 0,
2796 2,
2797 ad1848_tmr_start,
2798 ad1848_tmr_disable,
2799 ad1848_tmr_restart
2800};
2801
2802static int ad1848_tmr_install(int dev)
2803{
2804 if (timer_installed != -1)
2805 return 0; /* Don't install another timer */
2806
2807 timer_installed = ad1848_tmr.dev = dev;
2808 sound_timer_init(&ad1848_tmr, audio_devs[dev]->name);
2809
2810 return 1;
2811}
2812#endif /* EXCLUDE_TIMERS */
2813
2814static int ad1848_suspend(ad1848_info *devc)
2815{
2816 unsigned long flags;
2817
2818 spin_lock_irqsave(&devc->lock,flags);
2819
2820 ad_mute(devc);
2821
2822 spin_unlock_irqrestore(&devc->lock,flags);
2823 return 0;
2824}
2825
2826static int ad1848_resume(ad1848_info *devc)
2827{
2828 int mixer_levels[32], i;
2829
2830 /* Thinkpad is a bit more of PITA than normal. The BIOS tends to
2831 restore it in a different config to the one we use. Need to
2832 fix this somehow */
2833
2834 /* store old mixer levels */
2835 memcpy(mixer_levels, devc->levels, sizeof (mixer_levels));
2836 ad1848_init_hw(devc);
2837
2838 /* restore mixer levels */
2839 for (i = 0; i < 32; i++)
2840 ad1848_mixer_set(devc, devc->dev_no, mixer_levels[i]);
2841
2842 if (!devc->subtype) {
2843 static signed char interrupt_bits[12] = { -1, -1, -1, -1, -1, 0x00, -1, 0x08, -1, 0x10, 0x18, 0x20 };
2844 static char dma_bits[4] = { 1, 2, 0, 3 };
2845 unsigned long flags;
2846 signed char bits;
2847 char dma2_bit = 0;
2848
2849 int config_port = devc->base + 0;
2850
2851 bits = interrupt_bits[devc->irq];
2852 if (bits == -1) {
2853 printk(KERN_ERR "MSS: Bad IRQ %d\n", devc->irq);
2854 return -1;
2855 }
2856
2857 spin_lock_irqsave(&devc->lock,flags);
2858
2859 outb((bits | 0x40), config_port);
2860
2861 if (devc->dma2 != -1 && devc->dma2 != devc->dma1)
2862 if ( (devc->dma1 == 0 && devc->dma2 == 1) ||
2863 (devc->dma1 == 1 && devc->dma2 == 0) ||
2864 (devc->dma1 == 3 && devc->dma2 == 0))
2865 dma2_bit = 0x04;
2866
2867 outb((bits | dma_bits[devc->dma1] | dma2_bit), config_port);
2868 spin_unlock_irqrestore(&devc->lock,flags);
2869 }
2870
2871 return 0;
2872}
2873
2874static int ad1848_pm_callback(struct pm_dev *dev, pm_request_t rqst, void *data)
2875{
2876 ad1848_info *devc = dev->data;
2877 if (devc) {
2878 DEB(printk("ad1848: pm event received: 0x%x\n", rqst));
2879
2880 switch (rqst) {
2881 case PM_SUSPEND:
2882 ad1848_suspend(devc);
2883 break;
2884 case PM_RESUME:
2885 ad1848_resume(devc);
2886 break;
2887 }
2888 }
2889 return 0;
2890}
2891
2892
2893EXPORT_SYMBOL(ad1848_detect);
2894EXPORT_SYMBOL(ad1848_init);
2895EXPORT_SYMBOL(ad1848_unload);
2896EXPORT_SYMBOL(ad1848_control);
2897EXPORT_SYMBOL(adintr);
2898EXPORT_SYMBOL(probe_ms_sound);
2899EXPORT_SYMBOL(attach_ms_sound);
2900EXPORT_SYMBOL(unload_ms_sound);
2901
2902static int __initdata io = -1;
2903static int __initdata irq = -1;
2904static int __initdata dma = -1;
2905static int __initdata dma2 = -1;
2906static int __initdata type = 0;
2907
2908module_param(io, int, 0); /* I/O for a raw AD1848 card */
2909module_param(irq, int, 0); /* IRQ to use */
2910module_param(dma, int, 0); /* First DMA channel */
2911module_param(dma2, int, 0); /* Second DMA channel */
2912module_param(type, int, 0); /* Card type */
2913module_param(deskpro_xl, bool, 0); /* Special magic for Deskpro XL boxen */
2914module_param(deskpro_m, bool, 0); /* Special magic for Deskpro M box */
2915module_param(soundpro, bool, 0); /* More special magic for SoundPro chips */
2916
2917#ifdef CONFIG_PNP
2918module_param(isapnp, int, 0);
2919module_param(isapnpjump, int, 0);
2920module_param(reverse, bool, 0);
2921MODULE_PARM_DESC(isapnp, "When set to 0, Plug & Play support will be disabled");
2922MODULE_PARM_DESC(isapnpjump, "Jumps to a specific slot in the driver's PnP table. Use the source, Luke.");
2923MODULE_PARM_DESC(reverse, "When set to 1, will reverse ISAPnP search order");
2924
2925static struct pnp_dev *ad1848_dev = NULL;
2926
2927/* Please add new entries at the end of the table */
2928static struct {
2929 char *name;
2930 unsigned short card_vendor, card_device,
2931 vendor, function;
2932 short mss_io, irq, dma, dma2; /* index into isapnp table */
2933 int type;
2934} ad1848_isapnp_list[] __initdata = {
2935 {"CMI 8330 SoundPRO",
2936 ISAPNP_VENDOR('C','M','I'), ISAPNP_DEVICE(0x0001),
2937 ISAPNP_VENDOR('@','@','@'), ISAPNP_FUNCTION(0x0001),
2938 0, 0, 0,-1, 0},
2939 {"CS4232 based card",
2940 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
2941 ISAPNP_VENDOR('C','S','C'), ISAPNP_FUNCTION(0x0000),
2942 0, 0, 0, 1, 0},
2943 {"CS4232 based card",
2944 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
2945 ISAPNP_VENDOR('C','S','C'), ISAPNP_FUNCTION(0x0100),
2946 0, 0, 0, 1, 0},
2947 {"OPL3-SA2 WSS mode",
2948 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
2949 ISAPNP_VENDOR('Y','M','H'), ISAPNP_FUNCTION(0x0021),
2950 1, 0, 0, 1, 1},
2951 {"Advanced Gravis InterWave Audio",
2952 ISAPNP_VENDOR('G','R','V'), ISAPNP_DEVICE(0x0001),
2953 ISAPNP_VENDOR('G','R','V'), ISAPNP_FUNCTION(0x0000),
2954 0, 0, 0, 1, 0},
2955 {NULL}
2956};
2957
2958static struct isapnp_device_id id_table[] __devinitdata = {
2959 { ISAPNP_VENDOR('C','M','I'), ISAPNP_DEVICE(0x0001),
2960 ISAPNP_VENDOR('@','@','@'), ISAPNP_FUNCTION(0x0001), 0 },
2961 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
2962 ISAPNP_VENDOR('C','S','C'), ISAPNP_FUNCTION(0x0000), 0 },
2963 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
2964 ISAPNP_VENDOR('C','S','C'), ISAPNP_FUNCTION(0x0100), 0 },
2965 /* The main driver for this card is opl3sa2
2966 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
2967 ISAPNP_VENDOR('Y','M','H'), ISAPNP_FUNCTION(0x0021), 0 },
2968 */
2969 { ISAPNP_VENDOR('G','R','V'), ISAPNP_DEVICE(0x0001),
2970 ISAPNP_VENDOR('G','R','V'), ISAPNP_FUNCTION(0x0000), 0 },
2971 {0}
2972};
2973
2974MODULE_DEVICE_TABLE(isapnp, id_table);
2975
2976static struct pnp_dev *activate_dev(char *devname, char *resname, struct pnp_dev *dev)
2977{
2978 int err;
2979
2980 err = pnp_device_attach(dev);
2981 if (err < 0)
2982 return(NULL);
2983
2984 if((err = pnp_activate_dev(dev)) < 0) {
2985 printk(KERN_ERR "ad1848: %s %s config failed (out of resources?)[%d]\n", devname, resname, err);
2986
2987 pnp_device_detach(dev);
2988
2989 return(NULL);
2990 }
2991 audio_activated = 1;
2992 return(dev);
2993}
2994
2995static struct pnp_dev *ad1848_init_generic(struct pnp_card *bus, struct address_info *hw_config, int slot)
2996{
2997
2998 /* Configure Audio device */
2999 if((ad1848_dev = pnp_find_dev(bus, ad1848_isapnp_list[slot].vendor, ad1848_isapnp_list[slot].function, NULL)))
3000 {
3001 if((ad1848_dev = activate_dev(ad1848_isapnp_list[slot].name, "ad1848", ad1848_dev)))
3002 {
3003 hw_config->io_base = pnp_port_start(ad1848_dev, ad1848_isapnp_list[slot].mss_io);
3004 hw_config->irq = pnp_irq(ad1848_dev, ad1848_isapnp_list[slot].irq);
3005 hw_config->dma = pnp_dma(ad1848_dev, ad1848_isapnp_list[slot].dma);
3006 if(ad1848_isapnp_list[slot].dma2 != -1)
3007 hw_config->dma2 = pnp_dma(ad1848_dev, ad1848_isapnp_list[slot].dma2);
3008 else
3009 hw_config->dma2 = -1;
3010 hw_config->card_subtype = ad1848_isapnp_list[slot].type;
3011 } else
3012 return(NULL);
3013 } else
3014 return(NULL);
3015
3016 return(ad1848_dev);
3017}
3018
3019static int __init ad1848_isapnp_init(struct address_info *hw_config, struct pnp_card *bus, int slot)
3020{
3021 char *busname = bus->name[0] ? bus->name : ad1848_isapnp_list[slot].name;
3022
3023 /* Initialize this baby. */
3024
3025 if(ad1848_init_generic(bus, hw_config, slot)) {
3026 /* We got it. */
3027
3028 printk(KERN_NOTICE "ad1848: PnP reports '%s' at i/o %#x, irq %d, dma %d, %d\n",
3029 busname,
3030 hw_config->io_base, hw_config->irq, hw_config->dma,
3031 hw_config->dma2);
3032 return 1;
3033 }
3034 return 0;
3035}
3036
3037static int __init ad1848_isapnp_probe(struct address_info *hw_config)
3038{
3039 static int first = 1;
3040 int i;
3041
3042 /* Count entries in sb_isapnp_list */
3043 for (i = 0; ad1848_isapnp_list[i].card_vendor != 0; i++);
3044 i--;
3045
3046 /* Check and adjust isapnpjump */
3047 if( isapnpjump < 0 || isapnpjump > i) {
3048 isapnpjump = reverse ? i : 0;
3049 printk(KERN_ERR "ad1848: Valid range for isapnpjump is 0-%d. Adjusted to %d.\n", i, isapnpjump);
3050 }
3051
3052 if(!first || !reverse)
3053 i = isapnpjump;
3054 first = 0;
3055 while(ad1848_isapnp_list[i].card_vendor != 0) {
3056 static struct pnp_card *bus = NULL;
3057
3058 while ((bus = pnp_find_card(
3059 ad1848_isapnp_list[i].card_vendor,
3060 ad1848_isapnp_list[i].card_device,
3061 bus))) {
3062
3063 if(ad1848_isapnp_init(hw_config, bus, i)) {
3064 isapnpjump = i; /* start next search from here */
3065 return 0;
3066 }
3067 }
3068 i += reverse ? -1 : 1;
3069 }
3070
3071 return -ENODEV;
3072}
3073#endif
3074
3075
3076static int __init init_ad1848(void)
3077{
3078 printk(KERN_INFO "ad1848/cs4248 codec driver Copyright (C) by Hannu Savolainen 1993-1996\n");
3079
3080#ifdef CONFIG_PNP
3081 if(isapnp && (ad1848_isapnp_probe(&cfg) < 0) ) {
3082 printk(KERN_NOTICE "ad1848: No ISAPnP cards found, trying standard ones...\n");
3083 isapnp = 0;
3084 }
3085#endif
3086
3087 if(io != -1) {
3088 struct resource *ports;
3089 if( isapnp == 0 )
3090 {
3091 if(irq == -1 || dma == -1) {
3092 printk(KERN_WARNING "ad1848: must give I/O , IRQ and DMA.\n");
3093 return -EINVAL;
3094 }
3095
3096 cfg.irq = irq;
3097 cfg.io_base = io;
3098 cfg.dma = dma;
3099 cfg.dma2 = dma2;
3100 cfg.card_subtype = type;
3101 }
3102
3103 ports = request_region(io + 4, 4, "ad1848");
3104
3105 if (!ports)
3106 return -EBUSY;
3107
3108 if (!request_region(io, 4, "WSS config")) {
3109 release_region(io + 4, 4);
3110 return -EBUSY;
3111 }
3112
3113 if (!probe_ms_sound(&cfg, ports)) {
3114 release_region(io + 4, 4);
3115 release_region(io, 4);
3116 return -ENODEV;
3117 }
3118 attach_ms_sound(&cfg, ports, THIS_MODULE);
3119 loaded = 1;
3120 }
3121 return 0;
3122}
3123
3124static void __exit cleanup_ad1848(void)
3125{
3126 if(loaded)
3127 unload_ms_sound(&cfg);
3128
3129#ifdef CONFIG_PNP
3130 if(ad1848_dev){
3131 if(audio_activated)
3132 pnp_device_detach(ad1848_dev);
3133 }
3134#endif
3135}
3136
3137module_init(init_ad1848);
3138module_exit(cleanup_ad1848);
3139
3140#ifndef MODULE
3141static int __init setup_ad1848(char *str)
3142{
3143 /* io, irq, dma, dma2, type */
3144 int ints[6];
3145
3146 str = get_options(str, ARRAY_SIZE(ints), ints);
3147
3148 io = ints[1];
3149 irq = ints[2];
3150 dma = ints[3];
3151 dma2 = ints[4];
3152 type = ints[5];
3153
3154 return 1;
3155}
3156
3157__setup("ad1848=", setup_ad1848);
3158#endif
3159MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-26 21:42:49 -0500