aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/video/saa7134/saa7134-oss.c
blob: 2e3ba5f31453656a872fbfa1c9eab65c6dcaa0e9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
/*
 *
 * device driver for philips saa7134 based TV cards
 * oss dsp interface
 *
 * (c) 2001,02 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
 *     2005 conversion to standalone module:
 *         Ricardo Cerqueira <v4l@cerqueira.org>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/init.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/sound.h>
#include <linux/soundcard.h>

#include "saa7134-reg.h"
#include "saa7134.h"

/* ------------------------------------------------------------------ */

static unsigned int debug  = 0;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug,"enable debug messages [oss]");

static unsigned int rate  = 0;
module_param(rate, int, 0444);
MODULE_PARM_DESC(rate,"sample rate (valid are: 32000,48000)");

static unsigned int dsp_nr[]   = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
MODULE_PARM_DESC(dsp_nr, "device numbers for SAA7134 capture interface(s).");
module_param_array(dsp_nr,   int, NULL, 0444);

static unsigned int mixer_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
MODULE_PARM_DESC(mixer_nr, "mixer numbers for SAA7134 capture interface(s).");
module_param_array(mixer_nr, int, NULL, 0444);

#define dprintk(fmt, arg...)	if (debug) \
	printk(KERN_DEBUG "%s/oss: " fmt, dev->name , ## arg)


/* ------------------------------------------------------------------ */

static int dsp_buffer_conf(struct saa7134_dev *dev, int blksize, int blocks)
{
	if (blksize < 0x100)
		blksize = 0x100;
	if (blksize > 0x10000)
		blksize = 0x10000;

	if (blocks < 2)
		blocks = 2;
	if ((blksize * blocks) > 1024*1024)
		blocks = 1024*1024 / blksize;

	dev->dmasound.blocks  = blocks;
	dev->dmasound.blksize = blksize;
	dev->dmasound.bufsize = blksize * blocks;

	dprintk("buffer config: %d blocks / %d bytes, %d kB total\n",
		blocks,blksize,blksize * blocks / 1024);
	return 0;
}

static int dsp_buffer_init(struct saa7134_dev *dev)
{
	int err;

	BUG_ON(!dev->dmasound.bufsize);
	videobuf_dma_init(&dev->dmasound.dma);
	err = videobuf_dma_init_kernel(&dev->dmasound.dma, PCI_DMA_FROMDEVICE,
				       (dev->dmasound.bufsize + PAGE_SIZE) >> PAGE_SHIFT);
	if (0 != err)
		return err;
	return 0;
}

static int dsp_buffer_free(struct saa7134_dev *dev)
{
	BUG_ON(!dev->dmasound.blksize);
	videobuf_dma_free(&dev->dmasound.dma);
	dev->dmasound.blocks  = 0;
	dev->dmasound.blksize = 0;
	dev->dmasound.bufsize = 0;
	return 0;
}

static void dsp_dma_start(struct saa7134_dev *dev)
{
	dev->dmasound.dma_blk     = 0;
	dev->dmasound.dma_running = 1;
	saa7134_set_dmabits(dev);
}

static void dsp_dma_stop(struct saa7134_dev *dev)
{
	dev->dmasound.dma_blk     = -1;
	dev->dmasound.dma_running = 0;
	saa7134_set_dmabits(dev);
}

static int dsp_rec_start(struct saa7134_dev *dev)
{
	int err, bswap, sign;
	u32 fmt, control;
	unsigned long flags;

	/* prepare buffer */
	if (0 != (err = videobuf_pci_dma_map(dev->pci,&dev->dmasound.dma)))
		return err;
	if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt)))
		goto fail1;
	if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->dmasound.pt,
					      dev->dmasound.dma.sglist,
					      dev->dmasound.dma.sglen,
					      0)))
		goto fail2;

	/* sample format */
	switch (dev->dmasound.afmt) {
	case AFMT_U8:
	case AFMT_S8:     fmt = 0x00;  break;
	case AFMT_U16_LE:
	case AFMT_U16_BE:
	case AFMT_S16_LE:
	case AFMT_S16_BE: fmt = 0x01;  break;
	default:
		err = -EINVAL;
		goto fail2;
	}

	switch (dev->dmasound.afmt) {
	case AFMT_S8:
	case AFMT_S16_LE:
	case AFMT_S16_BE: sign = 1; break;
	default:          sign = 0; break;
	}

	switch (dev->dmasound.afmt) {
	case AFMT_U16_BE:
	case AFMT_S16_BE: bswap = 1; break;
	default:          bswap = 0; break;
	}

	switch (dev->pci->device) {
	case PCI_DEVICE_ID_PHILIPS_SAA7134:
		if (1 == dev->dmasound.channels)
			fmt |= (1 << 3);
		if (2 == dev->dmasound.channels)
			fmt |= (3 << 3);
		if (sign)
			fmt |= 0x04;
		fmt |= (TV == dev->dmasound.input) ? 0xc0 : 0x80;

		saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->dmasound.blksize - 1) & 0x0000ff));
		saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->dmasound.blksize - 1) & 0x00ff00) >>  8);
		saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->dmasound.blksize - 1) & 0xff0000) >> 16);
		saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);

		break;
	case PCI_DEVICE_ID_PHILIPS_SAA7133:
	case PCI_DEVICE_ID_PHILIPS_SAA7135:
		if (1 == dev->dmasound.channels)
			fmt |= (1 << 4);
		if (2 == dev->dmasound.channels)
			fmt |= (2 << 4);
		if (!sign)
			fmt |= 0x04;
		saa_writel(SAA7133_NUM_SAMPLES, dev->dmasound.blksize -4);
		saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
		break;
	}
	dprintk("rec_start: afmt=%d ch=%d  =>  fmt=0x%x swap=%c\n",
		dev->dmasound.afmt, dev->dmasound.channels, fmt,
		bswap ? 'b' : '-');

	/* dma: setup channel 6 (= AUDIO) */
	control = SAA7134_RS_CONTROL_BURST_16 |
		SAA7134_RS_CONTROL_ME |
		(dev->dmasound.pt.dma >> 12);
	if (bswap)
		control |= SAA7134_RS_CONTROL_BSWAP;
	saa_writel(SAA7134_RS_BA1(6),0);
	saa_writel(SAA7134_RS_BA2(6),dev->dmasound.blksize);
	saa_writel(SAA7134_RS_PITCH(6),0);
	saa_writel(SAA7134_RS_CONTROL(6),control);

	/* start dma */
	dev->dmasound.recording_on = 1;
	spin_lock_irqsave(&dev->slock,flags);
	dsp_dma_start(dev);
	spin_unlock_irqrestore(&dev->slock,flags);
	return 0;

 fail2:
	saa7134_pgtable_free(dev->pci,&dev->dmasound.pt);
 fail1:
	videobuf_pci_dma_unmap(dev->pci,&dev->dmasound.dma);
	return err;
}

static int dsp_rec_stop(struct saa7134_dev *dev)
{
	unsigned long flags;

	dprintk("rec_stop dma_blk=%d\n",dev->dmasound.dma_blk);

	/* stop dma */
	dev->dmasound.recording_on = 0;
	spin_lock_irqsave(&dev->slock,flags);
	dsp_dma_stop(dev);
	spin_unlock_irqrestore(&dev->slock,flags);

	/* unlock buffer */
	saa7134_pgtable_free(dev->pci,&dev->dmasound.pt);
	videobuf_pci_dma_unmap(dev->pci,&dev->dmasound.dma);
	return 0;
}

/* ------------------------------------------------------------------ */

static int dsp_open(struct inode *inode, struct file *file)
{
	int minor = iminor(inode);
	struct saa7134_dev *h,*dev = NULL;
	struct list_head *list;
	int err;

	list_for_each(list,&saa7134_devlist) {
		h = list_entry(list, struct saa7134_dev, devlist);
		if (h->dmasound.minor_dsp == minor)
			dev = h;
	}
	if (NULL == dev)
		return -ENODEV;

	mutex_lock(&dev->dmasound.lock);
	err = -EBUSY;
	if (dev->dmasound.users_dsp)
		goto fail1;
	dev->dmasound.users_dsp++;
	file->private_data = dev;

	dev->dmasound.afmt        = AFMT_U8;
	dev->dmasound.channels    = 1;
	dev->dmasound.read_count  = 0;
	dev->dmasound.read_offset = 0;
	dsp_buffer_conf(dev,PAGE_SIZE,64);
	err = dsp_buffer_init(dev);
	if (0 != err)
		goto fail2;

	mutex_unlock(&dev->dmasound.lock);
	return 0;

 fail2:
	dev->dmasound.users_dsp--;
 fail1:
	mutex_unlock(&dev->dmasound.lock);
	return err;
}

static int dsp_release(struct inode *inode, struct file *file)
{
	struct saa7134_dev *dev = file->private_data;

	mutex_lock(&dev->dmasound.lock);
	if (dev->dmasound.recording_on)
		dsp_rec_stop(dev);
	dsp_buffer_free(dev);
	dev->dmasound.users_dsp--;
	file->private_data = NULL;
	mutex_unlock(&dev->dmasound.lock);
	return 0;
}

static ssize_t dsp_read(struct file *file, char __user *buffer,
			size_t count, loff_t *ppos)
{
	struct saa7134_dev *dev = file->private_data;
	DECLARE_WAITQUEUE(wait, current);
	unsigned int bytes;
	unsigned long flags;
	int err,ret = 0;

	add_wait_queue(&dev->dmasound.wq, &wait);
	mutex_lock(&dev->dmasound.lock);
	while (count > 0) {
		/* wait for data if needed */
		if (0 == dev->dmasound.read_count) {
			if (!dev->dmasound.recording_on) {
				err = dsp_rec_start(dev);
				if (err < 0) {
					if (0 == ret)
						ret = err;
					break;
				}
			}
			if (dev->dmasound.recording_on &&
			    !dev->dmasound.dma_running) {
				/* recover from overruns */
				spin_lock_irqsave(&dev->slock,flags);
				dsp_dma_start(dev);
				spin_unlock_irqrestore(&dev->slock,flags);
			}
			if (file->f_flags & O_NONBLOCK) {
				if (0 == ret)
					ret = -EAGAIN;
				break;
			}
			mutex_unlock(&dev->dmasound.lock);
			set_current_state(TASK_INTERRUPTIBLE);
			if (0 == dev->dmasound.read_count)
				schedule();
			set_current_state(TASK_RUNNING);
			mutex_lock(&dev->dmasound.lock);
			if (signal_pending(current)) {
				if (0 == ret)
					ret = -EINTR;
				break;
			}
		}

		/* copy data to userspace */
		bytes = count;
		if (bytes > dev->dmasound.read_count)
			bytes = dev->dmasound.read_count;
		if (bytes > dev->dmasound.bufsize - dev->dmasound.read_offset)
			bytes = dev->dmasound.bufsize - dev->dmasound.read_offset;
		if (copy_to_user(buffer + ret,
				 dev->dmasound.dma.vmalloc + dev->dmasound.read_offset,
				 bytes)) {
			if (0 == ret)
				ret = -EFAULT;
			break;
		}

		ret   += bytes;
		count -= bytes;
		dev->dmasound.read_count  -= bytes;
		dev->dmasound.read_offset += bytes;
		if (dev->dmasound.read_offset == dev->dmasound.bufsize)
			dev->dmasound.read_offset = 0;
	}
	mutex_unlock(&dev->dmasound.lock);
	remove_wait_queue(&dev->dmasound.wq, &wait);
	return ret;
}

static ssize_t dsp_write(struct file *file, const char __user *buffer,
			 size_t count, loff_t *ppos)
{
	return -EINVAL;
}

static const char *osspcm_ioctls[] = {
	"RESET", "SYNC", "SPEED", "STEREO", "GETBLKSIZE", "SETFMT",
	"CHANNELS", "?", "POST", "SUBDIVIDE", "SETFRAGMENT", "GETFMTS",
	"GETOSPACE", "GETISPACE", "NONBLOCK", "GETCAPS", "GET/SETTRIGGER",
	"GETIPTR", "GETOPTR", "MAPINBUF", "MAPOUTBUF", "SETSYNCRO",
	"SETDUPLEX", "GETODELAY"
};
#define OSSPCM_IOCTLS ARRAY_SIZE(osspcm_ioctls)

static void saa7134_oss_print_ioctl(char *name, unsigned int cmd)
{
	char *dir;

	switch (_IOC_DIR(cmd)) {
	case _IOC_NONE:              dir = "--"; break;
	case _IOC_READ:              dir = "r-"; break;
	case _IOC_WRITE:             dir = "-w"; break;
	case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
	default:                     dir = "??"; break;
	}
	switch (_IOC_TYPE(cmd)) {
	case 'P':
		printk(KERN_DEBUG "%s: ioctl 0x%08x (oss dsp, %s, SNDCTL_DSP_%s)\n",
		       name, cmd, dir, (_IOC_NR(cmd) < OSSPCM_IOCTLS) ?
		       osspcm_ioctls[_IOC_NR(cmd)] : "???");
		break;
	case 'M':
		printk(KERN_DEBUG "%s: ioctl 0x%08x (oss mixer, %s, #%d)\n",
		       name, cmd, dir, _IOC_NR(cmd));
		break;
	default:
		printk(KERN_DEBUG "%s: ioctl 0x%08x (???, %s, #%d)\n",
		       name, cmd, dir, _IOC_NR(cmd));
	}
}

static int dsp_ioctl(struct inode *inode, struct file *file,
		     unsigned int cmd, unsigned long arg)
{
	struct saa7134_dev *dev = file->private_data;
	void __user *argp = (void __user *) arg;
	int __user *p = argp;
	int val = 0;

	if (debug > 1)
		saa7134_oss_print_ioctl(dev->name,cmd);
	switch (cmd) {
	case OSS_GETVERSION:
		return put_user(SOUND_VERSION, p);
	case SNDCTL_DSP_GETCAPS:
		return 0;

	case SNDCTL_DSP_SPEED:
		if (get_user(val, p))
			return -EFAULT;
		/* fall through */
	case SOUND_PCM_READ_RATE:
		return put_user(dev->dmasound.rate, p);

	case SNDCTL_DSP_STEREO:
		if (get_user(val, p))
			return -EFAULT;
		mutex_lock(&dev->dmasound.lock);
		dev->dmasound.channels = val ? 2 : 1;
		if (dev->dmasound.recording_on) {
			dsp_rec_stop(dev);
			dsp_rec_start(dev);
		}
		mutex_unlock(&dev->dmasound.lock);
		return put_user(dev->dmasound.channels-1, p);

	case SNDCTL_DSP_CHANNELS:
		if (get_user(val, p))
			return -EFAULT;
		if (val != 1 && val != 2)
			return -EINVAL;
		mutex_lock(&dev->dmasound.lock);
		dev->dmasound.channels = val;
		if (dev->dmasound.recording_on) {
			dsp_rec_stop(dev);
			dsp_rec_start(dev);
		}
		mutex_unlock(&dev->dmasound.lock);
		/* fall through */
	case SOUND_PCM_READ_CHANNELS:
		return put_user(dev->dmasound.channels, p);

	case SNDCTL_DSP_GETFMTS: /* Returns a mask */
		return put_user(AFMT_U8     | AFMT_S8     |
				AFMT_U16_LE | AFMT_U16_BE |
				AFMT_S16_LE | AFMT_S16_BE, p);

	case SNDCTL_DSP_SETFMT: /* Selects ONE fmt */
		if (get_user(val, p))
			return -EFAULT;
		switch (val) {
		case AFMT_QUERY:
			/* nothing to do */
			break;
		case AFMT_U8:
		case AFMT_S8:
		case AFMT_U16_LE:
		case AFMT_U16_BE:
		case AFMT_S16_LE:
		case AFMT_S16_BE:
			mutex_lock(&dev->dmasound.lock);
			dev->dmasound.afmt = val;
			if (dev->dmasound.recording_on) {
				dsp_rec_stop(dev);
				dsp_rec_start(dev);
			}
			mutex_unlock(&dev->dmasound.lock);
			return put_user(dev->dmasound.afmt, p);
		default:
			return -EINVAL;
		}

	case SOUND_PCM_READ_BITS:
		switch (dev->dmasound.afmt) {
		case AFMT_U8:
		case AFMT_S8:
			return put_user(8, p);
		case AFMT_U16_LE:
		case AFMT_U16_BE:
		case AFMT_S16_LE:
		case AFMT_S16_BE:
			return put_user(16, p);
		default:
			return -EINVAL;
		}

	case SNDCTL_DSP_NONBLOCK:
		file->f_flags |= O_NONBLOCK;
		return 0;

	case SNDCTL_DSP_RESET:
		mutex_lock(&dev->dmasound.lock);
		if (dev->dmasound.recording_on)
			dsp_rec_stop(dev);
		mutex_unlock(&dev->dmasound.lock);
		return 0;
	case SNDCTL_DSP_GETBLKSIZE:
		return put_user(dev->dmasound.blksize, p);

	case SNDCTL_DSP_SETFRAGMENT:
		if (get_user(val, p))
			return -EFAULT;
		if (dev->dmasound.recording_on)
			return -EBUSY;
		dsp_buffer_free(dev);
		/* used to be arg >> 16 instead of val >> 16; fixed */
		dsp_buffer_conf(dev,1 << (val & 0xffff), (val >> 16) & 0xffff);
		dsp_buffer_init(dev);
		return 0;

	case SNDCTL_DSP_SYNC:
		/* NOP */
		return 0;

	case SNDCTL_DSP_GETISPACE:
	{
		audio_buf_info info;
		info.fragsize   = dev->dmasound.blksize;
		info.fragstotal = dev->dmasound.blocks;
		info.bytes      = dev->dmasound.read_count;
		info.fragments  = info.bytes / info.fragsize;
		if (copy_to_user(argp, &info, sizeof(info)))
			return -EFAULT;
		return 0;
	}
	default:
		return -EINVAL;
	}
}

static unsigned int dsp_poll(struct file *file, struct poll_table_struct *wait)
{
	struct saa7134_dev *dev = file->private_data;
	unsigned int mask = 0;

	poll_wait(file, &dev->dmasound.wq, wait);

	if (0 == dev->dmasound.read_count) {
		mutex_lock(&dev->dmasound.lock);
		if (!dev->dmasound.recording_on)
			dsp_rec_start(dev);
		mutex_unlock(&dev->dmasound.lock);
	} else
		mask |= (POLLIN | POLLRDNORM);
	return mask;
}

struct file_operations saa7134_dsp_fops = {
	.owner   = THIS_MODULE,
	.open    = dsp_open,
	.release = dsp_release,
	.read    = dsp_read,
	.write   = dsp_write,
	.ioctl   = dsp_ioctl,
	.poll    = dsp_poll,
	.llseek  = no_llseek,
};

/* ------------------------------------------------------------------ */

static int
mixer_recsrc_7134(struct saa7134_dev *dev)
{
	int analog_io,rate;

	switch (dev->dmasound.input) {
	case TV:
		saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
		saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
		break;
	case LINE1:
	case LINE2:
	case LINE2_LEFT:
		analog_io = (LINE1 == dev->dmasound.input) ? 0x00 : 0x08;
		rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
		saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x08, analog_io);
		saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
		saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, rate);
		break;
	}
	return 0;
}

static int
mixer_recsrc_7133(struct saa7134_dev *dev)
{
	u32 anabar, xbarin;

	xbarin = 0x03; // adc
    anabar = 0;
	switch (dev->dmasound.input) {
	case TV:
		xbarin = 0; // Demodulator
	anabar = 2; // DACs
		break;
	case LINE1:
		anabar = 0;  // aux1, aux1
		break;
	case LINE2:
	case LINE2_LEFT:
		anabar = 9;  // aux2, aux2
		break;
	}
    /* output xbar always main channel */
	saa_dsp_writel(dev, 0x46c >> 2, 0xbbbb10);
	saa_dsp_writel(dev, 0x464 >> 2, xbarin);
	saa_writel(0x594 >> 2, anabar);

	return 0;
}

static int
mixer_recsrc(struct saa7134_dev *dev, enum saa7134_audio_in src)
{
	static const char *iname[] = { "Oops", "TV", "LINE1", "LINE2" };

	dev->dmasound.count++;
	dev->dmasound.input = src;
	dprintk("mixer input = %s\n",iname[dev->dmasound.input]);

	switch (dev->pci->device) {
	case PCI_DEVICE_ID_PHILIPS_SAA7134:
		mixer_recsrc_7134(dev);
		break;
	case PCI_DEVICE_ID_PHILIPS_SAA7133:
	case PCI_DEVICE_ID_PHILIPS_SAA7135:
		mixer_recsrc_7133(dev);
		break;
	}
	return 0;
}

static int
mixer_level(struct saa7134_dev *dev, enum saa7134_audio_in src, int level)
{
	switch (dev->pci->device) {
	case PCI_DEVICE_ID_PHILIPS_SAA7134:
		switch (src) {
		case TV:
			/* nothing */
			break;
		case LINE1:
			saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x10,
				   (100 == level) ? 0x00 : 0x10);
			break;
		case LINE2:
		case LINE2_LEFT:
			saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x20,
				   (100 == level) ? 0x00 : 0x20);
			break;
		}
		break;
	case PCI_DEVICE_ID_PHILIPS_SAA7133:
	case PCI_DEVICE_ID_PHILIPS_SAA7135:
		/* nothing */
		break;
	}
	return 0;
}

/* ------------------------------------------------------------------ */

static int mixer_open(struct inode *inode, struct file *file)
{
	int minor = iminor(inode);
	struct saa7134_dev *h,*dev = NULL;
	struct list_head *list;

	list_for_each(list,&saa7134_devlist) {
		h = list_entry(list, struct saa7134_dev, devlist);
		if (h->dmasound.minor_mixer == minor)
			dev = h;
	}
	if (NULL == dev)
		return -ENODEV;

	file->private_data = dev;
	return 0;
}

static int mixer_release(struct inode *inode, struct file *file)
{
	file->private_data = NULL;
	return 0;
}

static int mixer_ioctl(struct inode *inode, struct file *file,
		     unsigned int cmd, unsigned long arg)
{
	struct saa7134_dev *dev = file->private_data;
	enum saa7134_audio_in input;
	int val,ret;
	void __user *argp = (void __user *) arg;
	int __user *p = argp;

	if (debug > 1)
		saa7134_oss_print_ioctl(dev->name,cmd);
	switch (cmd) {
	case OSS_GETVERSION:
		return put_user(SOUND_VERSION, p);
	case SOUND_MIXER_INFO:
	{
		mixer_info info;
		memset(&info,0,sizeof(info));
		strlcpy(info.id,   "TV audio", sizeof(info.id));
		strlcpy(info.name, dev->name,  sizeof(info.name));
		info.modify_counter = dev->dmasound.count;
		if (copy_to_user(argp, &info, sizeof(info)))
			return -EFAULT;
		return 0;
	}
	case SOUND_OLD_MIXER_INFO:
	{
		_old_mixer_info info;
		memset(&info,0,sizeof(info));
		strlcpy(info.id,   "TV audio", sizeof(info.id));
		strlcpy(info.name, dev->name,  sizeof(info.name));
		if (copy_to_user(argp, &info, sizeof(info)))
			return -EFAULT;
		return 0;
	}
	case MIXER_READ(SOUND_MIXER_CAPS):
		return put_user(SOUND_CAP_EXCL_INPUT, p);
	case MIXER_READ(SOUND_MIXER_STEREODEVS):
		return put_user(0, p);
	case MIXER_READ(SOUND_MIXER_RECMASK):
	case MIXER_READ(SOUND_MIXER_DEVMASK):
		val = SOUND_MASK_LINE1 | SOUND_MASK_LINE2;
		if (32000 == dev->dmasound.rate)
			val |= SOUND_MASK_VIDEO;
		return put_user(val, p);

	case MIXER_WRITE(SOUND_MIXER_RECSRC):
		if (get_user(val, p))
			return -EFAULT;
		input = dev->dmasound.input;
		if (32000 == dev->dmasound.rate  &&
		    val & SOUND_MASK_VIDEO  &&  dev->dmasound.input != TV)
			input = TV;
		if (val & SOUND_MASK_LINE1  &&  dev->dmasound.input != LINE1)
			input = LINE1;
		if (val & SOUND_MASK_LINE2  &&  dev->dmasound.input != LINE2)
			input = LINE2;
		if (input != dev->dmasound.input)
			mixer_recsrc(dev,input);
		/* fall throuth */
	case MIXER_READ(SOUND_MIXER_RECSRC):
		switch (dev->dmasound.input) {
		case TV:    ret = SOUND_MASK_VIDEO; break;
		case LINE1: ret = SOUND_MASK_LINE1; break;
		case LINE2: ret = SOUND_MASK_LINE2; break;
		default:    ret = 0;
		}
		return put_user(ret, p);

	case MIXER_WRITE(SOUND_MIXER_VIDEO):
	case MIXER_READ(SOUND_MIXER_VIDEO):
		if (32000 != dev->dmasound.rate)
			return -EINVAL;
		return put_user(100 | 100 << 8, p);

	case MIXER_WRITE(SOUND_MIXER_LINE1):
		if (get_user(val, p))
			return -EFAULT;
		val &= 0xff;
		val = (val <= 50) ? 50 : 100;
		dev->dmasound.line1 = val;
		mixer_level(dev,LINE1,dev->dmasound.line1);
		/* fall throuth */
	case MIXER_READ(SOUND_MIXER_LINE1):
		return put_user(dev->dmasound.line1 | dev->dmasound.line1 << 8, p);

	case MIXER_WRITE(SOUND_MIXER_LINE2):
		if (get_user(val, p))
			return -EFAULT;
		val &= 0xff;
		val = (val <= 50) ? 50 : 100;
		dev->dmasound.line2 = val;
		mixer_level(dev,LINE2,dev->dmasound.line2);
		/* fall throuth */
	case MIXER_READ(SOUND_MIXER_LINE2):
		return put_user(dev->dmasound.line2 | dev->dmasound.line2 << 8, p);

	default:
		return -EINVAL;
	}
}

struct file_operations saa7134_mixer_fops = {
	.owner   = THIS_MODULE,
	.open    = mixer_open,
	.release = mixer_release,
	.ioctl   = mixer_ioctl,
	.llseek  = no_llseek,
};

/* ------------------------------------------------------------------ */

static irqreturn_t saa7134_oss_irq(int irq, void *dev_id, struct pt_regs *regs)
{
	struct saa7134_dmasound *dmasound = dev_id;
	struct saa7134_dev *dev = dmasound->priv_data;
	unsigned long report, status;
	int loop, handled = 0;

	for (loop = 0; loop < 10; loop++) {
		report = saa_readl(SAA7134_IRQ_REPORT);
		status = saa_readl(SAA7134_IRQ_STATUS);

		if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
			handled = 1;
			saa_writel(SAA7134_IRQ_REPORT,report);
			saa7134_irq_oss_done(dev, status);
		} else {
			goto out;
		}
	}

	if (loop == 10) {
		dprintk("error! looping IRQ!");
	}
out:
	return IRQ_RETVAL(handled);
}

int saa7134_oss_init1(struct saa7134_dev *dev)
{

	if ((request_irq(dev->pci->irq, saa7134_oss_irq,
			 IRQF_SHARED | IRQF_DISABLED, dev->name,
			(void*) &dev->dmasound)) < 0)
		return -1;

	/* general */
	mutex_init(&dev->dmasound.lock);
	init_waitqueue_head(&dev->dmasound.wq);

	switch (dev->pci->device) {
	case PCI_DEVICE_ID_PHILIPS_SAA7133:
	case PCI_DEVICE_ID_PHILIPS_SAA7135:
		saa_writel(0x588 >> 2, 0x00000fff);
		saa_writel(0x58c >> 2, 0x00543210);
		saa_dsp_writel(dev, 0x46c >> 2, 0xbbbbbb);
		break;
	}

	/* dsp */
	dev->dmasound.rate = 32000;
	if (rate)
		dev->dmasound.rate = rate;
	dev->dmasound.rate = (dev->dmasound.rate > 40000) ? 48000 : 32000;

	/* mixer */
	dev->dmasound.line1 = 50;
	dev->dmasound.line2 = 50;
	mixer_level(dev,LINE1,dev->dmasound.line1);
	mixer_level(dev,LINE2,dev->dmasound.line2);
	mixer_recsrc(dev, (dev->dmasound.rate == 32000) ? TV : LINE2);

	return 0;
}

int saa7134_oss_fini(struct saa7134_dev *dev)
{
	/* nothing */
	return 0;
}

void saa7134_irq_oss_done(struct saa7134_dev *dev, unsigned long status)
{
	int next_blk, reg = 0;

	spin_lock(&dev->slock);
	if (UNSET == dev->dmasound.dma_blk) {
		dprintk("irq: recording stopped\n");
		goto done;
	}
	if (0 != (status & 0x0f000000))
		dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
	if (0 == (status & 0x10000000)) {
		/* odd */
		if (0 == (dev->dmasound.dma_blk & 0x01))
			reg = SAA7134_RS_BA1(6);
	} else {
		/* even */
		if (1 == (dev->dmasound.dma_blk & 0x01))
			reg = SAA7134_RS_BA2(6);
	}
	if (0 == reg) {
		dprintk("irq: field oops [%s]\n",
			(status & 0x10000000) ? "even" : "odd");
		goto done;
	}
	if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) {
		dprintk("irq: overrun [full=%d/%d]\n",dev->dmasound.read_count,
			dev->dmasound.bufsize);
		dsp_dma_stop(dev);
		goto done;
	}

	/* next block addr */
	next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks;
	saa_writel(reg,next_blk * dev->dmasound.blksize);
	if (debug > 2)
		dprintk("irq: ok, %s, next_blk=%d, addr=%x\n",
			(status & 0x10000000) ? "even" : "odd ", next_blk,
			next_blk * dev->dmasound.blksize);

	/* update status & wake waiting readers */
	dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
	dev->dmasound.read_count += dev->dmasound.blksize;
	wake_up(&dev->dmasound.wq);

 done:
	spin_unlock(&dev->slock);
}

static int saa7134_dsp_create(struct saa7134_dev *dev)
{
	int err;

	err = dev->dmasound.minor_dsp =
		register_sound_dsp(&saa7134_dsp_fops,
				   dsp_nr[dev->nr]);
	if (err < 0) {
		goto fail;
	}
	printk(KERN_INFO "%s: registered device dsp%d\n",
	       dev->name,dev->dmasound.minor_dsp >> 4);

	err = dev->dmasound.minor_mixer =
		register_sound_mixer(&saa7134_mixer_fops,
				     mixer_nr[dev->nr]);
	if (err < 0)
		goto fail;
	printk(KERN_INFO "%s: registered device mixer%d\n",
	       dev->name,dev->dmasound.minor_mixer >> 4);

	return 0;

fail:
	unregister_sound_dsp(dev->dmasound.minor_dsp);
	return 0;


}

static int oss_device_init(struct saa7134_dev *dev)
{
	dev->dmasound.priv_data = dev;
	saa7134_oss_init1(dev);
	saa7134_dsp_create(dev);
	return 1;
}

static int oss_device_exit(struct saa7134_dev *dev)
{

	unregister_sound_mixer(dev->dmasound.minor_mixer);
	unregister_sound_dsp(dev->dmasound.minor_dsp);

	saa7134_oss_fini(dev);

	if (dev->pci->irq > 0) {
		synchronize_irq(dev->pci->irq);
		free_irq(dev->pci->irq,&dev->dmasound);
	}

	dev->dmasound.priv_data = NULL;
	return 1;
}

static int saa7134_oss_init(void)
{
	struct saa7134_dev *dev = NULL;
	struct list_head *list;

	if (!saa7134_dmasound_init && !saa7134_dmasound_exit) {
		saa7134_dmasound_init = oss_device_init;
		saa7134_dmasound_exit = oss_device_exit;
	} else {
		printk(KERN_WARNING "saa7134 OSS: can't load, DMA sound handler already assigned (probably to ALSA)\n");
		return -EBUSY;
	}

	printk(KERN_INFO "saa7134 OSS driver for DMA sound loaded\n");


	list_for_each(list,&saa7134_devlist) {
		dev = list_entry(list, struct saa7134_dev, devlist);
		if (dev->dmasound.priv_data == NULL) {
			oss_device_init(dev);
		} else {
			printk(KERN_ERR "saa7134 OSS: DMA sound is being handled by ALSA, ignoring %s\n",dev->name);
			return -EBUSY;
		}
	}

	if (dev == NULL)
		printk(KERN_INFO "saa7134 OSS: no saa7134 cards found\n");

	return 0;

}

static void saa7134_oss_exit(void)
{
	struct saa7134_dev *dev = NULL;
	struct list_head *list;

	list_for_each(list,&saa7134_devlist) {
		dev = list_entry(list, struct saa7134_dev, devlist);

		/* Device isn't registered by OSS, probably ALSA's */
		if (!dev->dmasound.minor_dsp)
			continue;

		oss_device_exit(dev);

	}

	saa7134_dmasound_init = NULL;
	saa7134_dmasound_exit = NULL;

	printk(KERN_INFO "saa7134 OSS driver for DMA sound unloaded\n");

	return;
}

/* We initialize this late, to make sure the sound system is up and running */
late_initcall(saa7134_oss_init);
module_exit(saa7134_oss_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");

/* ----------------------------------------------------------- */
/*
 * Local variables:
 * c-basic-offset: 8
 * End:
 */