?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
[PATCH] remove redundant NULL checks before kfree() in sound/ and avoid casting point...
[linux-2.6/mini2440.git] / sound / oss / ad1848.c
blob7c835abd99bc9ab2abc919b3cb8da9c48341004c
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
61 typedef 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
112 typedef 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 }
121 ad1848_port_info;
122
123 static struct address_info cfg;
124 static int nr_ad1848_devs;
125
126 static int deskpro_xl;
127 static int deskpro_m;
128 static int soundpro;
129
130 static 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
136 static int timer_installed = -1;
137 #endif
138
139 static int loaded;
140
141 static 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
158 static 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
165 static 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
182 static int isapnp = 1;
183 static int isapnpjump;
184 static int reverse;
185
186 static int audio_activated;
187 #else
188 static int isapnp;
189 #endif
190
191
192
193 static int ad1848_open(int dev, int mode);
194 static void ad1848_close(int dev);
195 static void ad1848_output_block(int dev, unsigned long buf, int count, int intrflag);
196 static void ad1848_start_input(int dev, unsigned long buf, int count, int intrflag);
197 static int ad1848_prepare_for_output(int dev, int bsize, int bcount);
198 static int ad1848_prepare_for_input(int dev, int bsize, int bcount);
199 static void ad1848_halt(int dev);
200 static void ad1848_halt_input(int dev);
201 static void ad1848_halt_output(int dev);
202 static void ad1848_trigger(int dev, int bits);
203 static int ad1848_pm_callback(struct pm_dev *dev, pm_request_t rqst, void *data);
204
205 #ifndef EXCLUDE_TIMERS
206 static int ad1848_tmr_install(int dev);
207 static void ad1848_tmr_reprogram(int dev);
208 #endif
209
210 static 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
237 static 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
261 static 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
292 static 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
308 static void ad_unmute(ad1848_info * devc)
309 {
310 }
311
312 static 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
329 static 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
352 static 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
465 static 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
501 static 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
511 static 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
538 static 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
587 static 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
676 static 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
770 static 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
859 static 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
870 static 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
945 static 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
963 static 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
971 static 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
1017 static 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
1038 static 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
1080 static 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
1131 static 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
1199 static 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
1314 static 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
1329 static 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
1365 static 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
1401 static 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
1436 static 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
1541 int 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
1950 int 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
2105 int 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
2165 void 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 kfree(audio_devs[dev]->portc);
2182 release_region(devc->base, 4);
2183
2184 if (!share_dma)
2185 {
2186 if (devc->irq > 0) /* There is no point in freeing irq, if it wasn't allocated */
2187 free_irq(devc->irq, (void *)devc->dev_no);
2188
2189 sound_free_dma(dma_playback);
2190
2191 if (dma_playback != dma_capture)
2192 sound_free_dma(dma_capture);
2193
2194 }
2195 mixer = audio_devs[devc->dev_no]->mixer_dev;
2196 if(mixer>=0)
2197 sound_unload_mixerdev(mixer);
2198
2199 if (devc->pmdev)
2200 pm_unregister(devc->pmdev);
2201
2202 nr_ad1848_devs--;
2203 for ( ; i < nr_ad1848_devs ; i++)
2204 adev_info[i] = adev_info[i+1];
2205 }
2206 else
2207 printk(KERN_ERR "ad1848: Can't find device to be unloaded. Base=%x\n", io_base);
2208 }
2209
2210 irqreturn_t adintr(int irq, void *dev_id, struct pt_regs *dummy)
2211 {
2212 unsigned char status;
2213 ad1848_info *devc;
2214 int dev;
2215 int alt_stat = 0xff;
2216 unsigned char c930_stat = 0;
2217 int cnt = 0;
2218
2219 dev = (int)dev_id;
2220 devc = (ad1848_info *) audio_devs[dev]->devc;
2221
2222 interrupt_again: /* Jump back here if int status doesn't reset */
2223
2224 status = inb(io_Status(devc));
2225
2226 if (status == 0x80)
2227 printk(KERN_DEBUG "adintr: Why?\n");
2228 if (devc->model == MD_1848)
2229 outb((0), io_Status(devc)); /* Clear interrupt status */
2230
2231 if (status & 0x01)
2232 {
2233 if (devc->model == MD_C930)
2234 { /* 82C930 has interrupt status register in MAD16 register MC11 */
2235
2236 spin_lock(&devc->lock);
2237
2238 /* 0xe0e is C930 address port
2239 * 0xe0f is C930 data port
2240 */
2241 outb(11, 0xe0e);
2242 c930_stat = inb(0xe0f);
2243 outb((~c930_stat), 0xe0f);
2244
2245 spin_unlock(&devc->lock);
2246
2247 alt_stat = (c930_stat << 2) & 0x30;
2248 }
2249 else if (devc->model != MD_1848)
2250 {
2251 spin_lock(&devc->lock);
2252 alt_stat = ad_read(devc, 24);
2253 ad_write(devc, 24, ad_read(devc, 24) & ~alt_stat); /* Selective ack */
2254 spin_unlock(&devc->lock);
2255 }
2256
2257 if ((devc->open_mode & OPEN_READ) && (devc->audio_mode & PCM_ENABLE_INPUT) && (alt_stat & 0x20))
2258 {
2259 DMAbuf_inputintr(devc->record_dev);
2260 }
2261 if ((devc->open_mode & OPEN_WRITE) && (devc->audio_mode & PCM_ENABLE_OUTPUT) &&
2262 (alt_stat & 0x10))
2263 {
2264 DMAbuf_outputintr(devc->playback_dev, 1);
2265 }
2266 if (devc->model != MD_1848 && (alt_stat & 0x40)) /* Timer interrupt */
2267 {
2268 devc->timer_ticks++;
2269 #ifndef EXCLUDE_TIMERS
2270 if (timer_installed == dev && devc->timer_running)
2271 sound_timer_interrupt();
2272 #endif
2273 }
2274 }
2275 /*
2276 * Sometimes playback or capture interrupts occur while a timer interrupt
2277 * is being handled. The interrupt will not be retriggered if we don't
2278 * handle it now. Check if an interrupt is still pending and restart
2279 * the handler in this case.
2280 */
2281 if (inb(io_Status(devc)) & 0x01 && cnt++ < 4)
2282 {
2283 goto interrupt_again;
2284 }
2285 return IRQ_HANDLED;
2286 }
2287
2288 /*
2289 * Experimental initialization sequence for the integrated sound system
2290 * of the Compaq Deskpro M.
2291 */
2292
2293 static int init_deskpro_m(struct address_info *hw_config)
2294 {
2295 unsigned char tmp;
2296
2297 if ((tmp = inb(0xc44)) == 0xff)
2298 {
2299 DDB(printk("init_deskpro_m: Dead port 0xc44\n"));
2300 return 0;
2301 }
2302
2303 outb(0x10, 0xc44);
2304 outb(0x40, 0xc45);
2305 outb(0x00, 0xc46);
2306 outb(0xe8, 0xc47);
2307 outb(0x14, 0xc44);
2308 outb(0x40, 0xc45);
2309 outb(0x00, 0xc46);
2310 outb(0xe8, 0xc47);
2311 outb(0x10, 0xc44);
2312
2313 return 1;
2314 }
2315
2316 /*
2317 * Experimental initialization sequence for the integrated sound system
2318 * of Compaq Deskpro XL.
2319 */
2320
2321 static int init_deskpro(struct address_info *hw_config)
2322 {
2323 unsigned char tmp;
2324
2325 if ((tmp = inb(0xc44)) == 0xff)
2326 {
2327 DDB(printk("init_deskpro: Dead port 0xc44\n"));
2328 return 0;
2329 }
2330 outb((tmp | 0x04), 0xc44); /* Select bank 1 */
2331 if (inb(0xc44) != 0x04)
2332 {
2333 DDB(printk("init_deskpro: Invalid bank1 signature in port 0xc44\n"));
2334 return 0;
2335 }
2336 /*
2337 * OK. It looks like a Deskpro so let's proceed.
2338 */
2339
2340 /*
2341 * I/O port 0xc44 Audio configuration register.
2342 *
2343 * bits 0xc0: Audio revision bits
2344 * 0x00 = Compaq Business Audio
2345 * 0x40 = MS Sound System Compatible (reset default)
2346 * 0x80 = Reserved
2347 * 0xc0 = Reserved
2348 * bit 0x20: No Wait State Enable
2349 * 0x00 = Disabled (reset default, DMA mode)
2350 * 0x20 = Enabled (programmed I/O mode)
2351 * bit 0x10: MS Sound System Decode Enable
2352 * 0x00 = Decoding disabled (reset default)
2353 * 0x10 = Decoding enabled
2354 * bit 0x08: FM Synthesis Decode Enable
2355 * 0x00 = Decoding Disabled (reset default)
2356 * 0x08 = Decoding enabled
2357 * bit 0x04 Bank select
2358 * 0x00 = Bank 0
2359 * 0x04 = Bank 1
2360 * bits 0x03 MSS Base address
2361 * 0x00 = 0x530 (reset default)
2362 * 0x01 = 0x604
2363 * 0x02 = 0xf40
2364 * 0x03 = 0xe80
2365 */
2366
2367 #ifdef DEBUGXL
2368 /* Debug printing */
2369 printk("Port 0xc44 (before): ");
2370 outb((tmp & ~0x04), 0xc44);
2371 printk("%02x ", inb(0xc44));
2372 outb((tmp | 0x04), 0xc44);
2373 printk("%02x\n", inb(0xc44));
2374 #endif
2375
2376 /* Set bank 1 of the register */
2377 tmp = 0x58; /* MSS Mode, MSS&FM decode enabled */
2378
2379 switch (hw_config->io_base)
2380 {
2381 case 0x530:
2382 tmp |= 0x00;
2383 break;
2384 case 0x604:
2385 tmp |= 0x01;
2386 break;
2387 case 0xf40:
2388 tmp |= 0x02;
2389 break;
2390 case 0xe80:
2391 tmp |= 0x03;
2392 break;
2393 default:
2394 DDB(printk("init_deskpro: Invalid MSS port %x\n", hw_config->io_base));
2395 return 0;
2396 }
2397 outb((tmp & ~0x04), 0xc44); /* Write to bank=0 */
2398
2399 #ifdef DEBUGXL
2400 /* Debug printing */
2401 printk("Port 0xc44 (after): ");
2402 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2403 printk("%02x ", inb(0xc44));
2404 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2405 printk("%02x\n", inb(0xc44));
2406 #endif
2407
2408 /*
2409 * I/O port 0xc45 FM Address Decode/MSS ID Register.
2410 *
2411 * bank=0, bits 0xfe: FM synthesis Decode Compare bits 7:1 (default=0x88)
2412 * bank=0, bit 0x01: SBIC Power Control Bit
2413 * 0x00 = Powered up
2414 * 0x01 = Powered down
2415 * bank=1, bits 0xfc: MSS ID (default=0x40)
2416 */
2417
2418 #ifdef DEBUGXL
2419 /* Debug printing */
2420 printk("Port 0xc45 (before): ");
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 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2428 outb((0x88), 0xc45); /* FM base 7:0 = 0x88 */
2429 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2430 outb((0x10), 0xc45); /* MSS ID = 0x10 (MSS port returns 0x04) */
2431
2432 #ifdef DEBUGXL
2433 /* Debug printing */
2434 printk("Port 0xc45 (after): ");
2435 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2436 printk("%02x ", inb(0xc45));
2437 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2438 printk("%02x\n", inb(0xc45));
2439 #endif
2440
2441
2442 /*
2443 * I/O port 0xc46 FM Address Decode/Address ASIC Revision Register.
2444 *
2445 * bank=0, bits 0xff: FM synthesis Decode Compare bits 15:8 (default=0x03)
2446 * bank=1, bits 0xff: Audio addressing ASIC id
2447 */
2448
2449 #ifdef DEBUGXL
2450 /* Debug printing */
2451 printk("Port 0xc46 (before): ");
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 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2459 outb((0x03), 0xc46); /* FM base 15:8 = 0x03 */
2460 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2461 outb((0x11), 0xc46); /* ASIC ID = 0x11 */
2462
2463 #ifdef DEBUGXL
2464 /* Debug printing */
2465 printk("Port 0xc46 (after): ");
2466 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2467 printk("%02x ", inb(0xc46));
2468 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2469 printk("%02x\n", inb(0xc46));
2470 #endif
2471
2472 /*
2473 * I/O port 0xc47 FM Address Decode Register.
2474 *
2475 * bank=0, bits 0xff: Decode enable selection for various FM address bits
2476 * bank=1, bits 0xff: Reserved
2477 */
2478
2479 #ifdef DEBUGXL
2480 /* Debug printing */
2481 printk("Port 0xc47 (before): ");
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 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2489 outb((0x7c), 0xc47); /* FM decode enable bits = 0x7c */
2490 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2491 outb((0x00), 0xc47); /* Reserved bank1 = 0x00 */
2492
2493 #ifdef DEBUGXL
2494 /* Debug printing */
2495 printk("Port 0xc47 (after): ");
2496 outb((tmp & ~0x04), 0xc44); /* Select bank=0 */
2497 printk("%02x ", inb(0xc47));
2498 outb((tmp | 0x04), 0xc44); /* Select bank=1 */
2499 printk("%02x\n", inb(0xc47));
2500 #endif
2501
2502 /*
2503 * I/O port 0xc6f = Audio Disable Function Register
2504 */
2505
2506 #ifdef DEBUGXL
2507 printk("Port 0xc6f (before) = %02x\n", inb(0xc6f));
2508 #endif
2509
2510 outb((0x80), 0xc6f);
2511
2512 #ifdef DEBUGXL
2513 printk("Port 0xc6f (after) = %02x\n", inb(0xc6f));
2514 #endif
2515
2516 return 1;
2517 }
2518
2519 int probe_ms_sound(struct address_info *hw_config, struct resource *ports)
2520 {
2521 unsigned char tmp;
2522
2523 DDB(printk("Entered probe_ms_sound(%x, %d)\n", hw_config->io_base, hw_config->card_subtype));
2524
2525 if (hw_config->card_subtype == 1) /* Has no IRQ/DMA registers */
2526 {
2527 /* check_opl3(0x388, hw_config); */
2528 return ad1848_detect(ports, NULL, hw_config->osp);
2529 }
2530
2531 if (deskpro_xl && hw_config->card_subtype == 2) /* Compaq Deskpro XL */
2532 {
2533 if (!init_deskpro(hw_config))
2534 return 0;
2535 }
2536
2537 if (deskpro_m) /* Compaq Deskpro M */
2538 {
2539 if (!init_deskpro_m(hw_config))
2540 return 0;
2541 }
2542
2543 /*
2544 * Check if the IO port returns valid signature. The original MS Sound
2545 * system returns 0x04 while some cards (AudioTrix Pro for example)
2546 * return 0x00 or 0x0f.
2547 */
2548
2549 if ((tmp = inb(hw_config->io_base + 3)) == 0xff) /* Bus float */
2550 {
2551 int ret;
2552
2553 DDB(printk("I/O address is inactive (%x)\n", tmp));
2554 if (!(ret = ad1848_detect(ports, NULL, hw_config->osp)))
2555 return 0;
2556 return 1;
2557 }
2558 DDB(printk("MSS signature = %x\n", tmp & 0x3f));
2559 if ((tmp & 0x3f) != 0x04 &&
2560 (tmp & 0x3f) != 0x0f &&
2561 (tmp & 0x3f) != 0x00)
2562 {
2563 int ret;
2564
2565 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)));
2566 DDB(printk("Trying to detect codec anyway but IRQ/DMA may not work\n"));
2567 if (!(ret = ad1848_detect(ports, NULL, hw_config->osp)))
2568 return 0;
2569
2570 hw_config->card_subtype = 1;
2571 return 1;
2572 }
2573 if ((hw_config->irq != 5) &&
2574 (hw_config->irq != 7) &&
2575 (hw_config->irq != 9) &&
2576 (hw_config->irq != 10) &&
2577 (hw_config->irq != 11) &&
2578 (hw_config->irq != 12))
2579 {
2580 printk(KERN_ERR "MSS: Bad IRQ %d\n", hw_config->irq);
2581 return 0;
2582 }
2583 if (hw_config->dma != 0 && hw_config->dma != 1 && hw_config->dma != 3)
2584 {
2585 printk(KERN_ERR "MSS: Bad DMA %d\n", hw_config->dma);
2586 return 0;
2587 }
2588 /*
2589 * Check that DMA0 is not in use with a 8 bit board.
2590 */
2591
2592 if (hw_config->dma == 0 && inb(hw_config->io_base + 3) & 0x80)
2593 {
2594 printk(KERN_ERR "MSS: Can't use DMA0 with a 8 bit card/slot\n");
2595 return 0;
2596 }
2597 if (hw_config->irq > 7 && hw_config->irq != 9 && inb(hw_config->io_base + 3) & 0x80)
2598 {
2599 printk(KERN_ERR "MSS: Can't use IRQ%d with a 8 bit card/slot\n", hw_config->irq);
2600 return 0;
2601 }
2602 return ad1848_detect(ports, NULL, hw_config->osp);
2603 }
2604
2605 void attach_ms_sound(struct address_info *hw_config, struct resource *ports, struct module *owner)
2606 {
2607 static signed char interrupt_bits[12] =
2608 {
2609 -1, -1, -1, -1, -1, 0x00, -1, 0x08, -1, 0x10, 0x18, 0x20
2610 };
2611 signed char bits;
2612 char dma2_bit = 0;
2613
2614 static char dma_bits[4] =
2615 {
2616 1, 2, 0, 3
2617 };
2618
2619 int config_port = hw_config->io_base + 0;
2620 int version_port = hw_config->io_base + 3;
2621 int dma = hw_config->dma;
2622 int dma2 = hw_config->dma2;
2623
2624 if (hw_config->card_subtype == 1) /* Has no IRQ/DMA registers */
2625 {
2626 hw_config->slots[0] = ad1848_init("MS Sound System", ports,
2627 hw_config->irq,
2628 hw_config->dma,
2629 hw_config->dma2, 0,
2630 hw_config->osp,
2631 owner);
2632 return;
2633 }
2634 /*
2635 * Set the IRQ and DMA addresses.
2636 */
2637
2638 bits = interrupt_bits[hw_config->irq];
2639 if (bits == -1)
2640 {
2641 printk(KERN_ERR "MSS: Bad IRQ %d\n", hw_config->irq);
2642 release_region(ports->start, 4);
2643 release_region(ports->start - 4, 4);
2644 return;
2645 }
2646 outb((bits | 0x40), config_port);
2647 if ((inb(version_port) & 0x40) == 0)
2648 printk(KERN_ERR "[MSS: IRQ Conflict?]\n");
2649
2650 /*
2651 * Handle the capture DMA channel
2652 */
2653
2654 if (dma2 != -1 && dma2 != dma)
2655 {
2656 if (!((dma == 0 && dma2 == 1) ||
2657 (dma == 1 && dma2 == 0) ||
2658 (dma == 3 && dma2 == 0)))
2659 { /* Unsupported combination. Try to swap channels */
2660 int tmp = dma;
2661
2662 dma = dma2;
2663 dma2 = tmp;
2664 }
2665 if ((dma == 0 && dma2 == 1) ||
2666 (dma == 1 && dma2 == 0) ||
2667 (dma == 3 && dma2 == 0))
2668 {
2669 dma2_bit = 0x04; /* Enable capture DMA */
2670 }
2671 else
2672 {
2673 printk(KERN_WARNING "MSS: Invalid capture DMA\n");
2674 dma2 = dma;
2675 }
2676 }
2677 else
2678 {
2679 dma2 = dma;
2680 }
2681
2682 hw_config->dma = dma;
2683 hw_config->dma2 = dma2;
2684
2685 outb((bits | dma_bits[dma] | dma2_bit), config_port); /* Write IRQ+DMA setup */
2686
2687 hw_config->slots[0] = ad1848_init("MS Sound System", ports,
2688 hw_config->irq,
2689 dma, dma2, 0,
2690 hw_config->osp,
2691 THIS_MODULE);
2692 }
2693
2694 void unload_ms_sound(struct address_info *hw_config)
2695 {
2696 ad1848_unload(hw_config->io_base + 4,
2697 hw_config->irq,
2698 hw_config->dma,
2699 hw_config->dma2, 0);
2700 sound_unload_audiodev(hw_config->slots[0]);
2701 release_region(hw_config->io_base, 4);
2702 }
2703
2704 #ifndef EXCLUDE_TIMERS
2705
2706 /*
2707 * Timer stuff (for /dev/music).
2708 */
2709
2710 static unsigned int current_interval;
2711
2712 static unsigned int ad1848_tmr_start(int dev, unsigned int usecs)
2713 {
2714 unsigned long flags;
2715 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
2716 unsigned long xtal_nsecs; /* nanoseconds per xtal oscillator tick */
2717 unsigned long divider;
2718
2719 spin_lock_irqsave(&devc->lock,flags);
2720
2721 /*
2722 * Length of the timer interval (in nanoseconds) depends on the
2723 * selected crystal oscillator. Check this from bit 0x01 of I8.
2724 *
2725 * AD1845 has just one oscillator which has cycle time of 10.050 us
2726 * (when a 24.576 MHz xtal oscillator is used).
2727 *
2728 * Convert requested interval to nanoseconds before computing
2729 * the timer divider.
2730 */
2731
2732 if (devc->model == MD_1845 || devc->model == MD_1845_SSCAPE)
2733 xtal_nsecs = 10050;
2734 else if (ad_read(devc, 8) & 0x01)
2735 xtal_nsecs = 9920;
2736 else
2737 xtal_nsecs = 9969;
2738
2739 divider = (usecs * 1000 + xtal_nsecs / 2) / xtal_nsecs;
2740
2741 if (divider < 100) /* Don't allow shorter intervals than about 1ms */
2742 divider = 100;
2743
2744 if (divider > 65535) /* Overflow check */
2745 divider = 65535;
2746
2747 ad_write(devc, 21, (divider >> 8) & 0xff); /* Set upper bits */
2748 ad_write(devc, 20, divider & 0xff); /* Set lower bits */
2749 ad_write(devc, 16, ad_read(devc, 16) | 0x40); /* Start the timer */
2750 devc->timer_running = 1;
2751 spin_unlock_irqrestore(&devc->lock,flags);
2752
2753 return current_interval = (divider * xtal_nsecs + 500) / 1000;
2754 }
2755
2756 static void ad1848_tmr_reprogram(int dev)
2757 {
2758 /*
2759 * Audio driver has changed sampling rate so that a different xtal
2760 * oscillator was selected. We have to reprogram the timer rate.
2761 */
2762
2763 ad1848_tmr_start(dev, current_interval);
2764 sound_timer_syncinterval(current_interval);
2765 }
2766
2767 static void ad1848_tmr_disable(int dev)
2768 {
2769 unsigned long flags;
2770 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
2771
2772 spin_lock_irqsave(&devc->lock,flags);
2773 ad_write(devc, 16, ad_read(devc, 16) & ~0x40);
2774 devc->timer_running = 0;
2775 spin_unlock_irqrestore(&devc->lock,flags);
2776 }
2777
2778 static void ad1848_tmr_restart(int dev)
2779 {
2780 unsigned long flags;
2781 ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
2782
2783 if (current_interval == 0)
2784 return;
2785
2786 spin_lock_irqsave(&devc->lock,flags);
2787 ad_write(devc, 16, ad_read(devc, 16) | 0x40);
2788 devc->timer_running = 1;
2789 spin_unlock_irqrestore(&devc->lock,flags);
2790 }
2791
2792 static struct sound_lowlev_timer ad1848_tmr =
2793 {
2794 0,
2795 2,
2796 ad1848_tmr_start,
2797 ad1848_tmr_disable,
2798 ad1848_tmr_restart
2799 };
2800
2801 static int ad1848_tmr_install(int dev)
2802 {
2803 if (timer_installed != -1)
2804 return 0; /* Don't install another timer */
2805
2806 timer_installed = ad1848_tmr.dev = dev;
2807 sound_timer_init(&ad1848_tmr, audio_devs[dev]->name);
2808
2809 return 1;
2810 }
2811 #endif /* EXCLUDE_TIMERS */
2812
2813 static int ad1848_suspend(ad1848_info *devc)
2814 {
2815 unsigned long flags;
2816
2817 spin_lock_irqsave(&devc->lock,flags);
2818
2819 ad_mute(devc);
2820
2821 spin_unlock_irqrestore(&devc->lock,flags);
2822 return 0;
2823 }
2824
2825 static int ad1848_resume(ad1848_info *devc)
2826 {
2827 int mixer_levels[32], i;
2828
2829 /* Thinkpad is a bit more of PITA than normal. The BIOS tends to
2830 restore it in a different config to the one we use. Need to
2831 fix this somehow */
2832
2833 /* store old mixer levels */
2834 memcpy(mixer_levels, devc->levels, sizeof (mixer_levels));
2835 ad1848_init_hw(devc);
2836
2837 /* restore mixer levels */
2838 for (i = 0; i < 32; i++)
2839 ad1848_mixer_set(devc, devc->dev_no, mixer_levels[i]);
2840
2841 if (!devc->subtype) {
2842 static signed char interrupt_bits[12] = { -1, -1, -1, -1, -1, 0x00, -1, 0x08, -1, 0x10, 0x18, 0x20 };
2843 static char dma_bits[4] = { 1, 2, 0, 3 };
2844 unsigned long flags;
2845 signed char bits;
2846 char dma2_bit = 0;
2847
2848 int config_port = devc->base + 0;
2849
2850 bits = interrupt_bits[devc->irq];
2851 if (bits == -1) {
2852 printk(KERN_ERR "MSS: Bad IRQ %d\n", devc->irq);
2853 return -1;
2854 }
2855
2856 spin_lock_irqsave(&devc->lock,flags);
2857
2858 outb((bits | 0x40), config_port);
2859
2860 if (devc->dma2 != -1 && devc->dma2 != devc->dma1)
2861 if ( (devc->dma1 == 0 && devc->dma2 == 1) ||
2862 (devc->dma1 == 1 && devc->dma2 == 0) ||
2863 (devc->dma1 == 3 && devc->dma2 == 0))
2864 dma2_bit = 0x04;
2865
2866 outb((bits | dma_bits[devc->dma1] | dma2_bit), config_port);
2867 spin_unlock_irqrestore(&devc->lock,flags);
2868 }
2869
2870 return 0;
2871 }
2872
2873 static int ad1848_pm_callback(struct pm_dev *dev, pm_request_t rqst, void *data)
2874 {
2875 ad1848_info *devc = dev->data;
2876 if (devc) {
2877 DEB(printk("ad1848: pm event received: 0x%x\n", rqst));
2878
2879 switch (rqst) {
2880 case PM_SUSPEND:
2881 ad1848_suspend(devc);
2882 break;
2883 case PM_RESUME:
2884 ad1848_resume(devc);
2885 break;
2886 }
2887 }
2888 return 0;
2889 }
2890
2891
2892 EXPORT_SYMBOL(ad1848_detect);
2893 EXPORT_SYMBOL(ad1848_init);
2894 EXPORT_SYMBOL(ad1848_unload);
2895 EXPORT_SYMBOL(ad1848_control);
2896 EXPORT_SYMBOL(adintr);
2897 EXPORT_SYMBOL(probe_ms_sound);
2898 EXPORT_SYMBOL(attach_ms_sound);
2899 EXPORT_SYMBOL(unload_ms_sound);
2900
2901 static int __initdata io = -1;
2902 static int __initdata irq = -1;
2903 static int __initdata dma = -1;
2904 static int __initdata dma2 = -1;
2905 static int __initdata type = 0;
2906
2907 module_param(io, int, 0); /* I/O for a raw AD1848 card */
2908 module_param(irq, int, 0); /* IRQ to use */
2909 module_param(dma, int, 0); /* First DMA channel */
2910 module_param(dma2, int, 0); /* Second DMA channel */
2911 module_param(type, int, 0); /* Card type */
2912 module_param(deskpro_xl, bool, 0); /* Special magic for Deskpro XL boxen */
2913 module_param(deskpro_m, bool, 0); /* Special magic for Deskpro M box */
2914 module_param(soundpro, bool, 0); /* More special magic for SoundPro chips */
2915
2916 #ifdef CONFIG_PNP
2917 module_param(isapnp, int, 0);
2918 module_param(isapnpjump, int, 0);
2919 module_param(reverse, bool, 0);
2920 MODULE_PARM_DESC(isapnp, "When set to 0, Plug & Play support will be disabled");
2921 MODULE_PARM_DESC(isapnpjump, "Jumps to a specific slot in the driver's PnP table. Use the source, Luke.");
2922 MODULE_PARM_DESC(reverse, "When set to 1, will reverse ISAPnP search order");
2923
2924 static struct pnp_dev *ad1848_dev = NULL;
2925
2926 /* Please add new entries at the end of the table */
2927 static struct {
2928 char *name;
2929 unsigned short card_vendor, card_device,
2930 vendor, function;
2931 short mss_io, irq, dma, dma2; /* index into isapnp table */
2932 int type;
2933 } ad1848_isapnp_list[] __initdata = {
2934 {"CMI 8330 SoundPRO",
2935 ISAPNP_VENDOR('C','M','I'), ISAPNP_DEVICE(0x0001),
2936 ISAPNP_VENDOR('@','@','@'), ISAPNP_FUNCTION(0x0001),
2937 0, 0, 0,-1, 0},
2938 {"CS4232 based card",
2939 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
2940 ISAPNP_VENDOR('C','S','C'), ISAPNP_FUNCTION(0x0000),
2941 0, 0, 0, 1, 0},
2942 {"CS4232 based card",
2943 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
2944 ISAPNP_VENDOR('C','S','C'), ISAPNP_FUNCTION(0x0100),
2945 0, 0, 0, 1, 0},
2946 {"OPL3-SA2 WSS mode",
2947 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
2948 ISAPNP_VENDOR('Y','M','H'), ISAPNP_FUNCTION(0x0021),
2949 1, 0, 0, 1, 1},
2950 {"Advanced Gravis InterWave Audio",
2951 ISAPNP_VENDOR('G','R','V'), ISAPNP_DEVICE(0x0001),
2952 ISAPNP_VENDOR('G','R','V'), ISAPNP_FUNCTION(0x0000),
2953 0, 0, 0, 1, 0},
2954 {NULL}
2955 };
2956
2957 static struct isapnp_device_id id_table[] __devinitdata = {
2958 { ISAPNP_VENDOR('C','M','I'), ISAPNP_DEVICE(0x0001),
2959 ISAPNP_VENDOR('@','@','@'), ISAPNP_FUNCTION(0x0001), 0 },
2960 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
2961 ISAPNP_VENDOR('C','S','C'), ISAPNP_FUNCTION(0x0000), 0 },
2962 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
2963 ISAPNP_VENDOR('C','S','C'), ISAPNP_FUNCTION(0x0100), 0 },
2964 /* The main driver for this card is opl3sa2
2965 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
2966 ISAPNP_VENDOR('Y','M','H'), ISAPNP_FUNCTION(0x0021), 0 },
2967 */
2968 { ISAPNP_VENDOR('G','R','V'), ISAPNP_DEVICE(0x0001),
2969 ISAPNP_VENDOR('G','R','V'), ISAPNP_FUNCTION(0x0000), 0 },
2970 {0}
2971 };
2972
2973 MODULE_DEVICE_TABLE(isapnp, id_table);
2974
2975 static struct pnp_dev *activate_dev(char *devname, char *resname, struct pnp_dev *dev)
2976 {
2977 int err;
2978
2979 err = pnp_device_attach(dev);
2980 if (err < 0)
2981 return(NULL);
2982
2983 if((err = pnp_activate_dev(dev)) < 0) {
2984 printk(KERN_ERR "ad1848: %s %s config failed (out of resources?)[%d]\n", devname, resname, err);
2985
2986 pnp_device_detach(dev);
2987
2988 return(NULL);
2989 }
2990 audio_activated = 1;
2991 return(dev);
2992 }
2993
2994 static struct pnp_dev *ad1848_init_generic(struct pnp_card *bus, struct address_info *hw_config, int slot)
2995 {
2996
2997 /* Configure Audio device */
2998 if((ad1848_dev = pnp_find_dev(bus, ad1848_isapnp_list[slot].vendor, ad1848_isapnp_list[slot].function, NULL)))
2999 {
3000 if((ad1848_dev = activate_dev(ad1848_isapnp_list[slot].name, "ad1848", ad1848_dev)))
3001 {
3002 hw_config->io_base = pnp_port_start(ad1848_dev, ad1848_isapnp_list[slot].mss_io);
3003 hw_config->irq = pnp_irq(ad1848_dev, ad1848_isapnp_list[slot].irq);
3004 hw_config->dma = pnp_dma(ad1848_dev, ad1848_isapnp_list[slot].dma);
3005 if(ad1848_isapnp_list[slot].dma2 != -1)
3006 hw_config->dma2 = pnp_dma(ad1848_dev, ad1848_isapnp_list[slot].dma2);
3007 else
3008 hw_config->dma2 = -1;
3009 hw_config->card_subtype = ad1848_isapnp_list[slot].type;
3010 } else
3011 return(NULL);
3012 } else
3013 return(NULL);
3014
3015 return(ad1848_dev);
3016 }
3017
3018 static int __init ad1848_isapnp_init(struct address_info *hw_config, struct pnp_card *bus, int slot)
3019 {
3020 char *busname = bus->name[0] ? bus->name : ad1848_isapnp_list[slot].name;
3021
3022 /* Initialize this baby. */
3023
3024 if(ad1848_init_generic(bus, hw_config, slot)) {
3025 /* We got it. */
3026
3027 printk(KERN_NOTICE "ad1848: PnP reports '%s' at i/o %#x, irq %d, dma %d, %d\n",
3028 busname,
3029 hw_config->io_base, hw_config->irq, hw_config->dma,
3030 hw_config->dma2);
3031 return 1;
3032 }
3033 return 0;
3034 }
3035
3036 static int __init ad1848_isapnp_probe(struct address_info *hw_config)
3037 {
3038 static int first = 1;
3039 int i;
3040
3041 /* Count entries in sb_isapnp_list */
3042 for (i = 0; ad1848_isapnp_list[i].card_vendor != 0; i++);
3043 i--;
3044
3045 /* Check and adjust isapnpjump */
3046 if( isapnpjump < 0 || isapnpjump > i) {
3047 isapnpjump = reverse ? i : 0;
3048 printk(KERN_ERR "ad1848: Valid range for isapnpjump is 0-%d. Adjusted to %d.\n", i, isapnpjump);
3049 }
3050
3051 if(!first || !reverse)
3052 i = isapnpjump;
3053 first = 0;
3054 while(ad1848_isapnp_list[i].card_vendor != 0) {
3055 static struct pnp_card *bus = NULL;
3056
3057 while ((bus = pnp_find_card(
3058 ad1848_isapnp_list[i].card_vendor,
3059 ad1848_isapnp_list[i].card_device,
3060 bus))) {
3061
3062 if(ad1848_isapnp_init(hw_config, bus, i)) {
3063 isapnpjump = i; /* start next search from here */
3064 return 0;
3065 }
3066 }
3067 i += reverse ? -1 : 1;
3068 }
3069
3070 return -ENODEV;
3071 }
3072 #endif
3073
3074
3075 static int __init init_ad1848(void)
3076 {
3077 printk(KERN_INFO "ad1848/cs4248 codec driver Copyright (C) by Hannu Savolainen 1993-1996\n");
3078
3079 #ifdef CONFIG_PNP
3080 if(isapnp && (ad1848_isapnp_probe(&cfg) < 0) ) {
3081 printk(KERN_NOTICE "ad1848: No ISAPnP cards found, trying standard ones...\n");
3082 isapnp = 0;
3083 }
3084 #endif
3085
3086 if(io != -1) {
3087 struct resource *ports;
3088 if( isapnp == 0 )
3089 {
3090 if(irq == -1 || dma == -1) {
3091 printk(KERN_WARNING "ad1848: must give I/O , IRQ and DMA.\n");
3092 return -EINVAL;
3093 }
3094
3095 cfg.irq = irq;
3096 cfg.io_base = io;
3097 cfg.dma = dma;
3098 cfg.dma2 = dma2;
3099 cfg.card_subtype = type;
3100 }
3101
3102 ports = request_region(io + 4, 4, "ad1848");
3103
3104 if (!ports)
3105 return -EBUSY;
3106
3107 if (!request_region(io, 4, "WSS config")) {
3108 release_region(io + 4, 4);
3109 return -EBUSY;
3110 }
3111
3112 if (!probe_ms_sound(&cfg, ports)) {
3113 release_region(io + 4, 4);
3114 release_region(io, 4);
3115 return -ENODEV;
3116 }
3117 attach_ms_sound(&cfg, ports, THIS_MODULE);
3118 loaded = 1;
3119 }
3120 return 0;
3121 }
3122
3123 static void __exit cleanup_ad1848(void)
3124 {
3125 if(loaded)
3126 unload_ms_sound(&cfg);
3127
3128 #ifdef CONFIG_PNP
3129 if(ad1848_dev){
3130 if(audio_activated)
3131 pnp_device_detach(ad1848_dev);
3132 }
3133 #endif
3134 }
3135
3136 module_init(init_ad1848);
3137 module_exit(cleanup_ad1848);
3138
3139 #ifndef MODULE
3140 static int __init setup_ad1848(char *str)
3141 {
3142 /* io, irq, dma, dma2, type */
3143 int ints[6];
3144
3145 str = get_options(str, ARRAY_SIZE(ints), ints);
3146
3147 io = ints[1];
3148 irq = ints[2];
3149 dma = ints[3];
3150 dma2 = ints[4];
3151 type = ints[5];
3152
3153 return 1;
3154 }
3155
3156 __setup("ad1848=", setup_ad1848);
3157 #endif
3158 MODULE_LICENSE("GPL");
Support for the Chinese Samsung S3C2440 based development boards