aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/video/pwc/pwc-ctrl.c
blob: ea53316d2111fdb2141fc8840755a6b57ce2fe94 (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
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
/* Driver for Philips webcam
   Functions that send various control messages to the webcam, including
   video modes.
   (C) 1999-2003 Nemosoft Unv.
   (C) 2004-2006 Luc Saillard (luc@saillard.org)

   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
   driver and thus may have bugs that are not present in the original version.
   Please send bug reports and support requests to <luc@saillard.org>.

   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
   driver and thus may have bugs that are not present in the original version.
   Please send bug reports and support requests to <luc@saillard.org>.
   The decompression routines have been implemented by reverse-engineering the
   Nemosoft binary pwcx module. Caveat emptor.

   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

/*
   Changes
   2001/08/03  Alvarado   Added methods for changing white balance and
			  red/green gains
 */

/* Control functions for the cam; brightness, contrast, video mode, etc. */

#ifdef __KERNEL__
#include <asm/uaccess.h>
#endif
#include <asm/errno.h>
#include <linux/version.h>

#include "pwc.h"
#include "pwc-uncompress.h"
#include "pwc-kiara.h"
#include "pwc-timon.h"
#include "pwc-dec1.h"
#include "pwc-dec23.h"

/* Request types: video */
#define SET_LUM_CTL			0x01
#define GET_LUM_CTL			0x02
#define SET_CHROM_CTL			0x03
#define GET_CHROM_CTL			0x04
#define SET_STATUS_CTL			0x05
#define GET_STATUS_CTL			0x06
#define SET_EP_STREAM_CTL		0x07
#define GET_EP_STREAM_CTL		0x08
#define GET_XX_CTL			0x09
#define SET_XX_CTL			0x0A
#define GET_XY_CTL			0x0B
#define SET_XY_CTL			0x0C
#define SET_MPT_CTL			0x0D
#define GET_MPT_CTL			0x0E

/* Selectors for the Luminance controls [GS]ET_LUM_CTL */
#define AGC_MODE_FORMATTER			0x2000
#define PRESET_AGC_FORMATTER			0x2100
#define SHUTTER_MODE_FORMATTER			0x2200
#define PRESET_SHUTTER_FORMATTER		0x2300
#define PRESET_CONTOUR_FORMATTER		0x2400
#define AUTO_CONTOUR_FORMATTER			0x2500
#define BACK_LIGHT_COMPENSATION_FORMATTER	0x2600
#define CONTRAST_FORMATTER			0x2700
#define DYNAMIC_NOISE_CONTROL_FORMATTER		0x2800
#define FLICKERLESS_MODE_FORMATTER		0x2900
#define AE_CONTROL_SPEED			0x2A00
#define BRIGHTNESS_FORMATTER			0x2B00
#define GAMMA_FORMATTER				0x2C00

/* Selectors for the Chrominance controls [GS]ET_CHROM_CTL */
#define WB_MODE_FORMATTER			0x1000
#define AWB_CONTROL_SPEED_FORMATTER		0x1100
#define AWB_CONTROL_DELAY_FORMATTER		0x1200
#define PRESET_MANUAL_RED_GAIN_FORMATTER	0x1300
#define PRESET_MANUAL_BLUE_GAIN_FORMATTER	0x1400
#define COLOUR_MODE_FORMATTER			0x1500
#define SATURATION_MODE_FORMATTER1		0x1600
#define SATURATION_MODE_FORMATTER2		0x1700

/* Selectors for the Status controls [GS]ET_STATUS_CTL */
#define SAVE_USER_DEFAULTS_FORMATTER		0x0200
#define RESTORE_USER_DEFAULTS_FORMATTER		0x0300
#define RESTORE_FACTORY_DEFAULTS_FORMATTER	0x0400
#define READ_AGC_FORMATTER			0x0500
#define READ_SHUTTER_FORMATTER			0x0600
#define READ_RED_GAIN_FORMATTER			0x0700
#define READ_BLUE_GAIN_FORMATTER		0x0800
#define GET_STATUS_B00				0x0B00
#define SENSOR_TYPE_FORMATTER1			0x0C00
#define GET_STATUS_3000				0x3000
#define READ_RAW_Y_MEAN_FORMATTER		0x3100
#define SET_POWER_SAVE_MODE_FORMATTER		0x3200
#define MIRROR_IMAGE_FORMATTER			0x3300
#define LED_FORMATTER				0x3400
#define LOWLIGHT				0x3500
#define GET_STATUS_3600				0x3600
#define SENSOR_TYPE_FORMATTER2			0x3700
#define GET_STATUS_3800				0x3800
#define GET_STATUS_4000				0x4000
#define GET_STATUS_4100				0x4100	/* Get */
#define CTL_STATUS_4200				0x4200	/* [GS] 1 */

/* Formatters for the Video Endpoint controls [GS]ET_EP_STREAM_CTL */
#define VIDEO_OUTPUT_CONTROL_FORMATTER		0x0100

/* Formatters for the motorized pan & tilt [GS]ET_MPT_CTL */
#define PT_RELATIVE_CONTROL_FORMATTER		0x01
#define PT_RESET_CONTROL_FORMATTER		0x02
#define PT_STATUS_FORMATTER			0x03

static const char *size2name[PSZ_MAX] =
{
	"subQCIF",
	"QSIF",
	"QCIF",
	"SIF",
	"CIF",
	"VGA",
};

/********/

/* Entries for the Nala (645/646) camera; the Nala doesn't have compression
   preferences, so you either get compressed or non-compressed streams.

   An alternate value of 0 means this mode is not available at all.
 */

#define PWC_FPS_MAX_NALA 8

struct Nala_table_entry {
	char alternate;			/* USB alternate setting */
	int compressed;			/* Compressed yes/no */

	unsigned char mode[3];		/* precomputed mode table */
};

static unsigned int Nala_fps_vector[PWC_FPS_MAX_NALA] = { 4, 5, 7, 10, 12, 15, 20, 24 };

static struct Nala_table_entry Nala_table[PSZ_MAX][PWC_FPS_MAX_NALA] =
{
#include "pwc-nala.h"
};

static void pwc_set_image_buffer_size(struct pwc_device *pdev);

/****************************************************************************/


#define SendControlMsg(request, value, buflen) \
	usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0), \
		request, \
		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, \
		value, \
		pdev->vcinterface, \
		&buf, buflen, 500)

#define RecvControlMsg(request, value, buflen) \
	usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0), \
		request, \
		USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, \
		value, \
		pdev->vcinterface, \
		&buf, buflen, 500)


static int send_video_command(struct usb_device *udev, int index, void *buf, int buflen)
{
	return usb_control_msg(udev,
		usb_sndctrlpipe(udev, 0),
		SET_EP_STREAM_CTL,
		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
		VIDEO_OUTPUT_CONTROL_FORMATTER,
		index,
		buf, buflen, 1000);
}



static int set_video_mode_Nala(struct pwc_device *pdev, int size, int frames)
{
	unsigned char buf[3];
	int ret, fps;
	struct Nala_table_entry *pEntry;
	int frames2frames[31] =
	{ /* closest match of framerate */
	   0,  0,  0,  0,  4,  /*  0-4  */
	   5,  5,  7,  7, 10,  /*  5-9  */
	  10, 10, 12, 12, 15,  /* 10-14 */
	  15, 15, 15, 20, 20,  /* 15-19 */
	  20, 20, 20, 24, 24,  /* 20-24 */
	  24, 24, 24, 24, 24,  /* 25-29 */
	  24                   /* 30    */
	};
	int frames2table[31] =
	{ 0, 0, 0, 0, 0, /*  0-4  */
	  1, 1, 1, 2, 2, /*  5-9  */
	  3, 3, 4, 4, 4, /* 10-14 */
	  5, 5, 5, 5, 5, /* 15-19 */
	  6, 6, 6, 6, 7, /* 20-24 */
	  7, 7, 7, 7, 7, /* 25-29 */
	  7              /* 30    */
	};

	if (size < 0 || size > PSZ_CIF || frames < 4 || frames > 25)
		return -EINVAL;
	frames = frames2frames[frames];
	fps = frames2table[frames];
	pEntry = &Nala_table[size][fps];
	if (pEntry->alternate == 0)
		return -EINVAL;

	memcpy(buf, pEntry->mode, 3);
	ret = send_video_command(pdev->udev, pdev->vendpoint, buf, 3);
	if (ret < 0) {
		PWC_DEBUG_MODULE("Failed to send video command... %d\n", ret);
		return ret;
	}
	if (pEntry->compressed && pdev->vpalette != VIDEO_PALETTE_RAW)
		pwc_dec1_init(pdev->type, pdev->release, buf, pdev->decompress_data);

	pdev->cmd_len = 3;
	memcpy(pdev->cmd_buf, buf, 3);

	/* Set various parameters */
	pdev->vframes = frames;
	pdev->vsize = size;
	pdev->valternate = pEntry->alternate;
	pdev->image = pwc_image_sizes[size];
	pdev->frame_size = (pdev->image.x * pdev->image.y * 3) / 2;
	if (pEntry->compressed) {
		if (pdev->release < 5) { /* 4 fold compression */
			pdev->vbandlength = 528;
			pdev->frame_size /= 4;
		}
		else {
			pdev->vbandlength = 704;
			pdev->frame_size /= 3;
		}
	}
	else
		pdev->vbandlength = 0;
	return 0;
}


static int set_video_mode_Timon(struct pwc_device *pdev, int size, int frames, int compression, int snapshot)
{
	unsigned char buf[13];
	const struct Timon_table_entry *pChoose;
	int ret, fps;

	if (size >= PSZ_MAX || frames < 5 || frames > 30 || compression < 0 || compression > 3)
		return -EINVAL;
	if (size == PSZ_VGA && frames > 15)
		return -EINVAL;
	fps = (frames / 5) - 1;

	/* Find a supported framerate with progressively higher compression ratios
	   if the preferred ratio is not available.
	*/
	pChoose = NULL;
	while (compression <= 3) {
	   pChoose = &Timon_table[size][fps][compression];
	   if (pChoose->alternate != 0)
	     break;
	   compression++;
	}
	if (pChoose == NULL || pChoose->alternate == 0)
		return -ENOENT; /* Not supported. */

	memcpy(buf, pChoose->mode, 13);
	if (snapshot)
		buf[0] |= 0x80;
	ret = send_video_command(pdev->udev, pdev->vendpoint, buf, 13);
	if (ret < 0)
		return ret;

	if (pChoose->bandlength > 0 && pdev->vpalette != VIDEO_PALETTE_RAW)
		pwc_dec23_init(pdev, pdev->type, buf);

	pdev->cmd_len = 13;
	memcpy(pdev->cmd_buf, buf, 13);

	/* Set various parameters */
	pdev->vframes = frames;
	pdev->vsize = size;
	pdev->vsnapshot = snapshot;
	pdev->valternate = pChoose->alternate;
	pdev->image = pwc_image_sizes[size];
	pdev->vbandlength = pChoose->bandlength;
	if (pChoose->bandlength > 0)
		pdev->frame_size = (pChoose->bandlength * pdev->image.y) / 4;
	else
		pdev->frame_size = (pdev->image.x * pdev->image.y * 12) / 8;
	return 0;
}


static int set_video_mode_Kiara(struct pwc_device *pdev, int size, int frames, int compression, int snapshot)
{
	const struct Kiara_table_entry *pChoose = NULL;
	int fps, ret;
	unsigned char buf[12];
	struct Kiara_table_entry RawEntry = {6, 773, 1272, {0xAD, 0xF4, 0x10, 0x27, 0xB6, 0x24, 0x96, 0x02, 0x30, 0x05, 0x03, 0x80}};

	if (size >= PSZ_MAX || frames < 5 || frames > 30 || compression < 0 || compression > 3)
		return -EINVAL;
	if (size == PSZ_VGA && frames > 15)
		return -EINVAL;
	fps = (frames / 5) - 1;

	/* special case: VGA @ 5 fps and snapshot is raw bayer mode */
	if (size == PSZ_VGA && frames == 5 && snapshot && pdev->vpalette == VIDEO_PALETTE_RAW)
	{
		/* Only available in case the raw palette is selected or
		   we have the decompressor available. This mode is
		   only available in compressed form
		*/
		PWC_DEBUG_SIZE("Choosing VGA/5 BAYER mode.\n");
		pChoose = &RawEntry;
	}
	else
	{
		/* Find a supported framerate with progressively higher compression ratios
		   if the preferred ratio is not available.
		   Skip this step when using RAW modes.
		*/
		snapshot = 0;
		while (compression <= 3) {
			pChoose = &Kiara_table[size][fps][compression];
			if (pChoose->alternate != 0)
				break;
			compression++;
		}
	}
	if (pChoose == NULL || pChoose->alternate == 0)
		return -ENOENT; /* Not supported. */

	PWC_TRACE("Using alternate setting %d.\n", pChoose->alternate);

	/* usb_control_msg won't take staticly allocated arrays as argument?? */
	memcpy(buf, pChoose->mode, 12);
	if (snapshot)
		buf[0] |= 0x80;

	/* Firmware bug: video endpoint is 5, but commands are sent to endpoint 4 */
	ret = send_video_command(pdev->udev, 4 /* pdev->vendpoint */, buf, 12);
	if (ret < 0)
		return ret;

	if (pChoose->bandlength > 0 && pdev->vpalette != VIDEO_PALETTE_RAW)
		pwc_dec23_init(pdev, pdev->type, buf);

	pdev->cmd_len = 12;
	memcpy(pdev->cmd_buf, buf, 12);
	/* All set and go */
	pdev->vframes = frames;
	pdev->vsize = size;
	pdev->vsnapshot = snapshot;
	pdev->valternate = pChoose->alternate;
	pdev->image = pwc_image_sizes[size];
	pdev->vbandlength = pChoose->bandlength;
	if (pdev->vbandlength > 0)
		pdev->frame_size = (pdev->vbandlength * pdev->image.y) / 4;
	else
		pdev->frame_size = (pdev->image.x * pdev->image.y * 12) / 8;
	PWC_TRACE("frame_size=%d, vframes=%d, vsize=%d, vsnapshot=%d, vbandlength=%d\n",
	    pdev->frame_size,pdev->vframes,pdev->vsize,pdev->vsnapshot,pdev->vbandlength);
	return 0;
}



/**
   @pdev: device structure
   @width: viewport width
   @height: viewport height
   @frame: framerate, in fps
   @compression: preferred compression ratio
   @snapshot: snapshot mode or streaming
 */
int pwc_set_video_mode(struct pwc_device *pdev, int width, int height, int frames, int compression, int snapshot)
{
	int ret, size;

	PWC_DEBUG_FLOW("set_video_mode(%dx%d @ %d, palette %d).\n", width, height, frames, pdev->vpalette);
	size = pwc_decode_size(pdev, width, height);
	if (size < 0) {
		PWC_DEBUG_MODULE("Could not find suitable size.\n");
		return -ERANGE;
	}
	PWC_TRACE("decode_size = %d.\n", size);

	if (DEVICE_USE_CODEC1(pdev->type)) {
		ret = set_video_mode_Nala(pdev, size, frames);

	} else if (DEVICE_USE_CODEC3(pdev->type)) {
		ret = set_video_mode_Kiara(pdev, size, frames, compression, snapshot);

	} else {
		ret = set_video_mode_Timon(pdev, size, frames, compression, snapshot);
	}
	if (ret < 0) {
		PWC_ERROR("Failed to set video mode %s@%d fps; return code = %d\n", size2name[size], frames, ret);
		return ret;
	}
	pdev->view.x = width;
	pdev->view.y = height;
	pdev->frame_total_size = pdev->frame_size + pdev->frame_header_size + pdev->frame_trailer_size;
	pwc_set_image_buffer_size(pdev);
	PWC_DEBUG_SIZE("Set viewport to %dx%d, image size is %dx%d.\n", width, height, pwc_image_sizes[size].x, pwc_image_sizes[size].y);
	return 0;
}

static unsigned int pwc_get_fps_Nala(struct pwc_device *pdev, unsigned int index, unsigned int size)
{
	unsigned int i;

	for (i = 0; i < PWC_FPS_MAX_NALA; i++) {
		if (Nala_table[size][i].alternate) {
			if (index--==0) return Nala_fps_vector[i];
		}
	}
	return 0;
}

static unsigned int pwc_get_fps_Kiara(struct pwc_device *pdev, unsigned int index, unsigned int size)
{
	unsigned int i;

	for (i = 0; i < PWC_FPS_MAX_KIARA; i++) {
		if (Kiara_table[size][i][3].alternate) {
			if (index--==0) return Kiara_fps_vector[i];
		}
	}
	return 0;
}

static unsigned int pwc_get_fps_Timon(struct pwc_device *pdev, unsigned int index, unsigned int size)
{
	unsigned int i;

	for (i=0; i < PWC_FPS_MAX_TIMON; i++) {
		if (Timon_table[size][i][3].alternate) {
			if (index--==0) return Timon_fps_vector[i];
		}
	}
	return 0;
}

unsigned int pwc_get_fps(struct pwc_device *pdev, unsigned int index, unsigned int size)
{
	unsigned int ret;

	if (DEVICE_USE_CODEC1(pdev->type)) {
		ret = pwc_get_fps_Nala(pdev, index, size);

	} else if (DEVICE_USE_CODEC3(pdev->type)) {
		ret = pwc_get_fps_Kiara(pdev, index, size);

	} else {
		ret = pwc_get_fps_Timon(pdev, index, size);
	}

	return ret;
}

#define BLACK_Y 0
#define BLACK_U 128
#define BLACK_V 128

static void pwc_set_image_buffer_size(struct pwc_device *pdev)
{
	int i, factor = 0;

	/* for PALETTE_YUV420P */
	switch(pdev->vpalette)
	{
	case VIDEO_PALETTE_YUV420P:
		factor = 6;
		break;
	case VIDEO_PALETTE_RAW:
		factor = 6; /* can be uncompressed YUV420P */
		break;
	}

	/* Set sizes in bytes */
	pdev->image.size = pdev->image.x * pdev->image.y * factor / 4;
	pdev->view.size  = pdev->view.x  * pdev->view.y  * factor / 4;

	/* Align offset, or you'll get some very weird results in
	   YUV420 mode... x must be multiple of 4 (to get the Y's in
	   place), and y even (or you'll mixup U & V). This is less of a
	   problem for YUV420P.
	 */
	pdev->offset.x = ((pdev->view.x - pdev->image.x) / 2) & 0xFFFC;
	pdev->offset.y = ((pdev->view.y - pdev->image.y) / 2) & 0xFFFE;

	/* Fill buffers with black colors */
	for (i = 0; i < pwc_mbufs; i++) {
		unsigned char *p = pdev->image_data + pdev->images[i].offset;
		memset(p, BLACK_Y, pdev->view.x * pdev->view.y);
		p += pdev->view.x * pdev->view.y;
		memset(p, BLACK_U, pdev->view.x * pdev->view.y/4);
		p += pdev->view.x * pdev->view.y/4;
		memset(p, BLACK_V, pdev->view.x * pdev->view.y/4);
	}
}



/* BRIGHTNESS */

int pwc_get_brightness(struct pwc_device *pdev)
{
	char buf;
	int ret;

	ret = RecvControlMsg(GET_LUM_CTL, BRIGHTNESS_FORMATTER, 1);
	if (ret < 0)
		return ret;
	return buf;
}

int pwc_set_brightness(struct pwc_device *pdev, int value)
{
	char buf;

	if (value < 0)
		value = 0;
	if (value > 0xffff)
		value = 0xffff;
	buf = (value >> 9) & 0x7f;
	return SendControlMsg(SET_LUM_CTL, BRIGHTNESS_FORMATTER, 1);
}

/* CONTRAST */

int pwc_get_contrast(struct pwc_device *pdev)
{
	char buf;
	int ret;

	ret = RecvControlMsg(GET_LUM_CTL, CONTRAST_FORMATTER, 1);
	if (ret < 0)
		return ret;
	return buf;
}

int pwc_set_contrast(struct pwc_device *pdev, int value)
{
	char buf;

	if (value < 0)
		value = 0;
	if (value > 0xffff)
		value = 0xffff;
	buf = (value >> 10) & 0x3f;
	return SendControlMsg(SET_LUM_CTL, CONTRAST_FORMATTER, 1);
}

/* GAMMA */

int pwc_get_gamma(struct pwc_device *pdev)
{
	char buf;
	int ret;

	ret = RecvControlMsg(GET_LUM_CTL, GAMMA_FORMATTER, 1);
	if (ret < 0)
		return ret;
	return buf;
}

int pwc_set_gamma(struct pwc_device *pdev, int value)
{
	char buf;

	if (value < 0)
		value = 0;
	if (value > 0xffff)
		value = 0xffff;
	buf = (value >> 11) & 0x1f;
	return SendControlMsg(SET_LUM_CTL, GAMMA_FORMATTER, 1);
}


/* SATURATION */

/* return a value between [-100 , 100] */
int pwc_get_saturation(struct pwc_device *pdev, int *value)
{
	char buf;
	int ret, saturation_register;

	if (pdev->type < 675)
		return -EINVAL;
	if (pdev->type < 730)
		saturation_register = SATURATION_MODE_FORMATTER2;
	else
		saturation_register = SATURATION_MODE_FORMATTER1;
	ret = RecvControlMsg(GET_CHROM_CTL, saturation_register, 1);
	if (ret < 0)
		return ret;
	*value = (signed)buf;
	return 0;
}

/* @param value saturation color between [-100 , 100] */
int pwc_set_saturation(struct pwc_device *pdev, int value)
{
	char buf;
	int saturation_register;

	if (pdev->type < 675)
		return -EINVAL;
	if (value < -100)
		value = -100;
	if (value > 100)
		value = 100;
	if (pdev->type < 730)
		saturation_register = SATURATION_MODE_FORMATTER2;
	else
		saturation_register = SATURATION_MODE_FORMATTER1;
	return SendControlMsg(SET_CHROM_CTL, saturation_register, 1);
}

/* AGC */

int pwc_set_agc(struct pwc_device *pdev, int mode, int value)
{
	char buf;
	int ret;

	if (mode)
		buf = 0x0; /* auto */
	else
		buf = 0xff; /* fixed */

	ret = SendControlMsg(SET_LUM_CTL, AGC_MODE_FORMATTER, 1);

	if (!mode && ret >= 0) {
		if (value < 0)
			value = 0;
		if (value > 0xffff)
			value = 0xffff;
		buf = (value >> 10) & 0x3F;
		ret = SendControlMsg(SET_LUM_CTL, PRESET_AGC_FORMATTER, 1);
	}
	if (ret < 0)
		return ret;
	return 0;
}

int pwc_get_agc(struct pwc_device *pdev, int *value)
{
	unsigned char buf;
	int ret;

	ret = RecvControlMsg(GET_LUM_CTL, AGC_MODE_FORMATTER, 1);
	if (ret < 0)
		return ret;

	if (buf != 0) { /* fixed */
		ret = RecvControlMsg(GET_LUM_CTL, PRESET_AGC_FORMATTER, 1);
		if (ret < 0)
			return ret;
		if (buf > 0x3F)
			buf = 0x3F;
		*value = (buf << 10);
	}
	else { /* auto */
		ret = RecvControlMsg(GET_STATUS_CTL, READ_AGC_FORMATTER, 1);
		if (ret < 0)
			return ret;
		/* Gah... this value ranges from 0x00 ... 0x9F */
		if (buf > 0x9F)
			buf = 0x9F;
		*value = -(48 + buf * 409);
	}

	return 0;
}

int pwc_set_shutter_speed(struct pwc_device *pdev, int mode, int value)
{
	char buf[2];
	int speed, ret;


	if (mode)
		buf[0] = 0x0;	/* auto */
	else
		buf[0] = 0xff; /* fixed */

	ret = SendControlMsg(SET_LUM_CTL, SHUTTER_MODE_FORMATTER, 1);

	if (!mode && ret >= 0) {
		if (value < 0)
			value = 0;
		if (value > 0xffff)
			value = 0xffff;

		if (DEVICE_USE_CODEC2(pdev->type)) {
			/* speed ranges from 0x0 to 0x290 (656) */
			speed = (value / 100);
			buf[1] = speed >> 8;
			buf[0] = speed & 0xff;
		} else if (DEVICE_USE_CODEC3(pdev->type)) {
			/* speed seems to range from 0x0 to 0xff */
			buf[1] = 0;
			buf[0] = value >> 8;
		}

		ret = SendControlMsg(SET_LUM_CTL, PRESET_SHUTTER_FORMATTER, 2);
	}
	return ret;
}

/* This function is not exported to v4l1, so output values between 0 -> 256 */
int pwc_get_shutter_speed(struct pwc_device *pdev, int *value)
{
	unsigned char buf[2];
	int ret;

	ret = RecvControlMsg(GET_STATUS_CTL, READ_SHUTTER_FORMATTER, 2);
	if (ret < 0)
		return ret;
	*value = buf[0] + (buf[1] << 8);
	if (DEVICE_USE_CODEC2(pdev->type)) {
		/* speed ranges from 0x0 to 0x290 (656) */
		*value *= 256/656;
	} else if (DEVICE_USE_CODEC3(pdev->type)) {
		/* speed seems to range from 0x0 to 0xff */
	}
	return 0;
}


/* POWER */

int pwc_camera_power(struct pwc_device *pdev, int power)
{
	char buf;

	if (pdev->type < 675 || (pdev->type < 730 && pdev->release < 6))
		return 0;	/* Not supported by Nala or Timon < release 6 */

	if (power)
		buf = 0x00; /* active */
	else
		buf = 0xFF; /* power save */
	return SendControlMsg(SET_STATUS_CTL, SET_POWER_SAVE_MODE_FORMATTER, 1);
}



/* private calls */

int pwc_restore_user(struct pwc_device *pdev)
{
	char buf; /* dummy */
	return SendControlMsg(SET_STATUS_CTL, RESTORE_USER_DEFAULTS_FORMATTER, 0);
}

int pwc_save_user(struct pwc_device *pdev)
{
	char buf; /* dummy */
	return SendControlMsg(SET_STATUS_CTL, SAVE_USER_DEFAULTS_FORMATTER, 0);
}

int pwc_restore_factory(struct pwc_device *pdev)
{
	char buf; /* dummy */
	return SendControlMsg(SET_STATUS_CTL, RESTORE_FACTORY_DEFAULTS_FORMATTER, 0);
}

 /* ************************************************* */
 /* Patch by Alvarado: (not in the original version   */

 /*
  * the camera recognizes modes from 0 to 4:
  *
  * 00: indoor (incandescant lighting)
  * 01: outdoor (sunlight)
  * 02: fluorescent lighting
  * 03: manual
  * 04: auto
  */
int pwc_set_awb(struct pwc_device *pdev, int mode)
{
	char buf;
	int ret;

	if (mode < 0)
	    mode = 0;

	if (mode > 4)
	    mode = 4;

	buf = mode & 0x07; /* just the lowest three bits */

	ret = SendControlMsg(SET_CHROM_CTL, WB_MODE_FORMATTER, 1);

	if (ret < 0)
		return ret;
	return 0;
}

int pwc_get_awb(struct pwc_device *pdev)
{
	unsigned char buf;
	int ret;

	ret = RecvControlMsg(GET_CHROM_CTL, WB_MODE_FORMATTER, 1);

	if (ret < 0)
		return ret;
	return buf;
}

int pwc_set_red_gain(struct pwc_device *pdev, int value)
{
	unsigned char buf;

	if (value < 0)
		value = 0;
	if (value > 0xffff)
		value = 0xffff;
	/* only the msb is considered */
	buf = value >> 8;
	return SendControlMsg(SET_CHROM_CTL, PRESET_MANUAL_RED_GAIN_FORMATTER, 1);
}

int pwc_get_red_gain(struct pwc_device *pdev, int *value)
{
	unsigned char buf;
	int ret;

	ret = RecvControlMsg(GET_CHROM_CTL, PRESET_MANUAL_RED_GAIN_FORMATTER, 1);
	if (ret < 0)
	    return ret;
	*value = buf << 8;
	return 0;
}


int pwc_set_blue_gain(struct pwc_device *pdev, int value)
{
	unsigned char buf;

	if (value < 0)
		value = 0;
	if (value > 0xffff)
		value = 0xffff;
	/* only the msb is considered */
	buf = value >> 8;
	return SendControlMsg(SET_CHROM_CTL, PRESET_MANUAL_BLUE_GAIN_FORMATTER, 1);
}

int pwc_get_blue_gain(struct pwc_device *pdev, int *value)
{
	unsigned char buf;
	int ret;

	ret = RecvControlMsg(GET_CHROM_CTL, PRESET_MANUAL_BLUE_GAIN_FORMATTER, 1);
	if (ret < 0)
	    return ret;
	*value = buf << 8;
	return 0;
}


/* The following two functions are different, since they only read the
   internal red/blue gains, which may be different from the manual
   gains set or read above.
 */
static int pwc_read_red_gain(struct pwc_device *pdev, int *value)
{
	unsigned char buf;
	int ret;

	ret = RecvControlMsg(GET_STATUS_CTL, READ_RED_GAIN_FORMATTER, 1);
	if (ret < 0)
		return ret;
	*value = buf << 8;
	return 0;
}

static int pwc_read_blue_gain(struct pwc_device *pdev, int *value)
{
	unsigned char buf;
	int ret;

	ret = RecvControlMsg(GET_STATUS_CTL, READ_BLUE_GAIN_FORMATTER, 1);
	if (ret < 0)
		return ret;
	*value = buf << 8;
	return 0;
}


static int pwc_set_wb_speed(struct pwc_device *pdev, int speed)
{
	unsigned char buf;

	/* useful range is 0x01..0x20 */
	buf = speed / 0x7f0;
	return SendControlMsg(SET_CHROM_CTL, AWB_CONTROL_SPEED_FORMATTER, 1);
}

static int pwc_get_wb_speed(struct pwc_device *pdev, int *value)
{
	unsigned char buf;
	int ret;

	ret = RecvControlMsg(GET_CHROM_CTL, AWB_CONTROL_SPEED_FORMATTER, 1);
	if (ret < 0)
		return ret;
	*value = buf * 0x7f0;
	return 0;
}


static int pwc_set_wb_delay(struct pwc_device *pdev, int delay)
{
	unsigned char buf;

	/* useful range is 0x01..0x3F */
	buf = (delay >> 10);
	return SendControlMsg(SET_CHROM_CTL, AWB_CONTROL_DELAY_FORMATTER, 1);
}

static int pwc_get_wb_delay(struct pwc_device *pdev, int *value)
{
	unsigned char buf;
	int ret;

	ret = RecvControlMsg(GET_CHROM_CTL, AWB_CONTROL_DELAY_FORMATTER, 1);
	if (ret < 0)
		return ret;
	*value = buf << 10;
	return 0;
}


int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value)
{
	unsigned char buf[2];

	if (pdev->type < 730)
		return 0;
	on_value /= 100;
	off_value /= 100;
	if (on_value < 0)
		on_value = 0;
	if (on_value > 0xff)
		on_value = 0xff;
	if (off_value < 0)
		off_value = 0;
	if (off_value > 0xff)
		off_value = 0xff;

	buf[0] = on_value;
	buf[1] = off_value;

	return SendControlMsg(SET_STATUS_CTL, LED_FORMATTER, 2);
}

static int pwc_get_leds(struct pwc_device *pdev, int *on_value, int *off_value)
{
	unsigned char buf[2];
	int ret;

	if (pdev->type < 730) {
		*on_value = -1;
		*off_value = -1;
		return 0;
	}

	ret = RecvControlMsg(GET_STATUS_CTL, LED_FORMATTER, 2);
	if (ret < 0)
		return ret;
	*on_value = buf[0] * 100;
	*off_value = buf[1] * 100;
	return 0;
}

int pwc_set_contour(struct pwc_device *pdev, int contour)
{
	unsigned char buf;
	int ret;

	if (contour < 0)
		buf = 0xff; /* auto contour on */
	else
		buf = 0x0; /* auto contour off */
	ret = SendControlMsg(SET_LUM_CTL, AUTO_CONTOUR_FORMATTER, 1);
	if (ret < 0)
		return ret;

	if (contour < 0)
		return 0;
	if (contour > 0xffff)
		contour = 0xffff;

	buf = (contour >> 10); /* contour preset is [0..3f] */
	ret = SendControlMsg(SET_LUM_CTL, PRESET_CONTOUR_FORMATTER, 1);
	if (ret < 0)
		return ret;
	return 0;
}

int pwc_get_contour(struct pwc_device *pdev, int *contour)
{
	unsigned char buf;
	int ret;

	ret = RecvControlMsg(GET_LUM_CTL, AUTO_CONTOUR_FORMATTER, 1);
	if (ret < 0)
		return ret;

	if (buf == 0) {
		/* auto mode off, query current preset value */
		ret = RecvControlMsg(GET_LUM_CTL, PRESET_CONTOUR_FORMATTER, 1);
		if (ret < 0)
			return ret;
		*contour = buf << 10;
	}
	else
		*contour = -1;
	return 0;
}


int pwc_set_backlight(struct pwc_device *pdev, int backlight)
{
	unsigned char buf;

	if (backlight)
		buf = 0xff;
	else
		buf = 0x0;
	return SendControlMsg(SET_LUM_CTL, BACK_LIGHT_COMPENSATION_FORMATTER, 1);
}

int pwc_get_backlight(struct pwc_device *pdev, int *backlight)
{
	int ret;
	unsigned char buf;

	ret = RecvControlMsg(GET_LUM_CTL, BACK_LIGHT_COMPENSATION_FORMATTER, 1);
	if (ret < 0)
		return ret;
	*backlight = !!buf;
	return 0;
}

int pwc_set_colour_mode(struct pwc_device *pdev, int colour)
{
	unsigned char buf;

	if (colour)
		buf = 0xff;
	else
		buf = 0x0;
	return SendControlMsg(SET_CHROM_CTL, COLOUR_MODE_FORMATTER, 1);
}

int pwc_get_colour_mode(struct pwc_device *pdev, int *colour)
{
	int ret;
	unsigned char buf;

	ret = RecvControlMsg(GET_CHROM_CTL, COLOUR_MODE_FORMATTER, 1);
	if (ret < 0)
		return ret;
	*colour = !!buf;
	return 0;
}


int pwc_set_flicker(struct pwc_device *pdev, int flicker)
{
	unsigned char buf;

	if (flicker)
		buf = 0xff;
	else
		buf = 0x0;
	return SendControlMsg(SET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, 1);
}

int pwc_get_flicker(struct pwc_device *pdev, int *flicker)
{
	int ret;
	unsigned char buf;

	ret = RecvControlMsg(GET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, 1);
	if (ret < 0)
		return ret;
	*flicker = !!buf;
	return 0;
}

int pwc_set_dynamic_noise(struct pwc_device *pdev, int noise)
{
	unsigned char buf;

	if (noise < 0)
		noise = 0;
	if (noise > 3)
		noise = 3;
	buf = noise;
	return SendControlMsg(SET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER, 1);
}

int pwc_get_dynamic_noise(struct pwc_device *pdev, int *noise)
{
	int ret;
	unsigned char buf;

	ret = RecvControlMsg(GET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER, 1);
	if (ret < 0)
		return ret;
	*noise = buf;
	return 0;
}

static int _pwc_mpt_reset(struct pwc_device *pdev, int flags)
{
	unsigned char buf;

	buf = flags & 0x03; // only lower two bits are currently used
	return SendControlMsg(SET_MPT_CTL, PT_RESET_CONTROL_FORMATTER, 1);
}

int pwc_mpt_reset(struct pwc_device *pdev, int flags)
{
	int ret;
	ret = _pwc_mpt_reset(pdev, flags);
	if (ret >= 0) {
		pdev->pan_angle = 0;
		pdev->tilt_angle = 0;
	}
	return ret;
}

static int _pwc_mpt_set_angle(struct pwc_device *pdev, int pan, int tilt)
{
	unsigned char buf[4];

	/* set new relative angle; angles are expressed in degrees * 100,
	   but cam as .5 degree resolution, hence divide by 200. Also
	   the angle must be multiplied by 64 before it's send to
	   the cam (??)
	 */
	pan  =  64 * pan  / 100;
	tilt = -64 * tilt / 100; /* positive tilt is down, which is not what the user would expect */
	buf[0] = pan & 0xFF;
	buf[1] = (pan >> 8) & 0xFF;
	buf[2] = tilt & 0xFF;
	buf[3] = (tilt >> 8) & 0xFF;
	return SendControlMsg(SET_MPT_CTL, PT_RELATIVE_CONTROL_FORMATTER, 4);
}

int pwc_mpt_set_angle(struct pwc_device *pdev, int pan, int tilt)
{
	int ret;

	/* check absolute ranges */
	if (pan  < pdev->angle_range.pan_min  ||
	    pan  > pdev->angle_range.pan_max  ||
	    tilt < pdev->angle_range.tilt_min ||
	    tilt > pdev->angle_range.tilt_max)
		return -ERANGE;

	/* go to relative range, check again */
	pan  -= pdev->pan_angle;
	tilt -= pdev->tilt_angle;
	/* angles are specified in degrees * 100, thus the limit = 36000 */
	if (pan < -36000 || pan > 36000 || tilt < -36000 || tilt > 36000)
		return -ERANGE;

	ret = _pwc_mpt_set_angle(pdev, pan, tilt);
	if (ret >= 0) {
		pdev->pan_angle  += pan;
		pdev->tilt_angle += tilt;
	}
	if (ret == -EPIPE) /* stall -> out of range */
		ret = -ERANGE;
	return ret;
}

static int pwc_mpt_get_status(struct pwc_device *pdev, struct pwc_mpt_status *status)
{
	int ret;
	unsigned char buf[5];

	ret = RecvControlMsg(GET_MPT_CTL, PT_STATUS_FORMATTER, 5);
	if (ret < 0)
		return ret;
	status->status = buf[0] & 0x7; // 3 bits are used for reporting
	status->time_pan = (buf[1] << 8) + buf[2];
	status->time_tilt = (buf[3] << 8) + buf[4];
	return 0;
}


int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor)
{
	unsigned char buf;
	int ret = -1, request;

	if (pdev->type < 675)
		request = SENSOR_TYPE_FORMATTER1;
	else if (pdev->type < 730)
		return -1; /* The Vesta series doesn't have this call */
	else
		request = SENSOR_TYPE_FORMATTER2;

	ret = RecvControlMsg(GET_STATUS_CTL, request, 1);
	if (ret < 0)
		return ret;
	if (pdev->type < 675)
		*sensor = buf | 0x100;
	else
		*sensor = buf;
	return 0;
}


 /* End of Add-Ons                                    */
 /* ************************************************* */

/* Linux 2.5.something and 2.6 pass direct pointers to arguments of
   ioctl() calls. With 2.4, you have to do tedious copy_from_user()
   and copy_to_user() calls. With these macros we circumvent this,
   and let me maintain only one source file. The functionality is
   exactly the same otherwise.
 */


/* define local variable for arg */
#define ARG_DEF(ARG_type, ARG_name)\
	ARG_type *ARG_name = arg;
/* copy arg to local variable */
#define ARG_IN(ARG_name) /* nothing */
/* argument itself (referenced) */
#define ARGR(ARG_name) (*ARG_name)
/* argument address */
#define ARGA(ARG_name) ARG_name
/* copy local variable to arg */
#define ARG_OUT(ARG_name) /* nothing */


int pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg)
{
	int ret = 0;

	switch(cmd) {
	case VIDIOCPWCRUSER:
	{
		if (pwc_restore_user(pdev))
			ret = -EINVAL;
		break;
	}

	case VIDIOCPWCSUSER:
	{
		if (pwc_save_user(pdev))
			ret = -EINVAL;
		break;
	}

	case VIDIOCPWCFACTORY:
	{
		if (pwc_restore_factory(pdev))
			ret = -EINVAL;
		break;
	}

	case VIDIOCPWCSCQUAL:
	{
		ARG_DEF(int, qual)

		ARG_IN(qual)
		if (ARGR(qual) < 0 || ARGR(qual) > 3)
			ret = -EINVAL;
		else
			ret = pwc_try_video_mode(pdev, pdev->view.x, pdev->view.y, pdev->vframes, ARGR(qual), pdev->vsnapshot);
		if (ret >= 0)
			pdev->vcompression = ARGR(qual);
		break;
	}

	case VIDIOCPWCGCQUAL:
	{
		ARG_DEF(int, qual)

		ARGR(qual) = pdev->vcompression;
		ARG_OUT(qual)
		break;
	}

	case VIDIOCPWCPROBE:
	{
		ARG_DEF(struct pwc_probe, probe)

		strcpy(ARGR(probe).name, pdev->vdev->name);
		ARGR(probe).type = pdev->type;
		ARG_OUT(probe)
		break;
	}

	case VIDIOCPWCGSERIAL:
	{
		ARG_DEF(struct pwc_serial, serial)

		strcpy(ARGR(serial).serial, pdev->serial);
		ARG_OUT(serial)
		break;
	}

	case VIDIOCPWCSAGC:
	{
		ARG_DEF(int, agc)

		ARG_IN(agc)
		if (pwc_set_agc(pdev, ARGR(agc) < 0 ? 1 : 0, ARGR(agc)))
			ret = -EINVAL;
		break;
	}

	case VIDIOCPWCGAGC:
	{
		ARG_DEF(int, agc)

		if (pwc_get_agc(pdev, ARGA(agc)))
			ret = -EINVAL;
		ARG_OUT(agc)
		break;
	}

	case VIDIOCPWCSSHUTTER:
	{
		ARG_DEF(int, shutter_speed)

		ARG_IN(shutter_speed)
		ret = pwc_set_shutter_speed(pdev, ARGR(shutter_speed) < 0 ? 1 : 0, ARGR(shutter_speed));
		break;
	}

	case VIDIOCPWCSAWB:
	{
		ARG_DEF(struct pwc_whitebalance, wb)

		ARG_IN(wb)
		ret = pwc_set_awb(pdev, ARGR(wb).mode);
		if (ret >= 0 && ARGR(wb).mode == PWC_WB_MANUAL) {
			pwc_set_red_gain(pdev, ARGR(wb).manual_red);
			pwc_set_blue_gain(pdev, ARGR(wb).manual_blue);
		}
		break;
	}

	case VIDIOCPWCGAWB:
	{
		ARG_DEF(struct pwc_whitebalance, wb)

		memset(ARGA(wb), 0, sizeof(struct pwc_whitebalance));
		ARGR(wb).mode = pwc_get_awb(pdev);
		if (ARGR(wb).mode < 0)
			ret = -EINVAL;
		else {
			if (ARGR(wb).mode == PWC_WB_MANUAL) {
				ret = pwc_get_red_gain(pdev, &ARGR(wb).manual_red);
				if (ret < 0)
					break;
				ret = pwc_get_blue_gain(pdev, &ARGR(wb).manual_blue);
				if (ret < 0)
					break;
			}
			if (ARGR(wb).mode == PWC_WB_AUTO) {
				ret = pwc_read_red_gain(pdev, &ARGR(wb).read_red);
				if (ret < 0)
					break;
				ret = pwc_read_blue_gain(pdev, &ARGR(wb).read_blue);
				if (ret < 0)
					break;
			}
		}
		ARG_OUT(wb)
		break;
	}

	case VIDIOCPWCSAWBSPEED:
	{
		ARG_DEF(struct pwc_wb_speed, wbs)

		if (ARGR(wbs).control_speed > 0) {
			ret = pwc_set_wb_speed(pdev, ARGR(wbs).control_speed);
		}
		if (ARGR(wbs).control_delay > 0) {
			ret = pwc_set_wb_delay(pdev, ARGR(wbs).control_delay);
		}
		break;
	}

	case VIDIOCPWCGAWBSPEED:
	{
		ARG_DEF(struct pwc_wb_speed, wbs)

		ret = pwc_get_wb_speed(pdev, &ARGR(wbs).control_speed);
		if (ret < 0)
			break;
		ret = pwc_get_wb_delay(pdev, &ARGR(wbs).control_delay);
		if (ret < 0)
			break;
		ARG_OUT(wbs)
		break;
	}

	case VIDIOCPWCSLED:
	{
		ARG_DEF(struct pwc_leds, leds)

		ARG_IN(leds)
		ret = pwc_set_leds(pdev, ARGR(leds).led_on, ARGR(leds).led_off);
		break;
	}


	case VIDIOCPWCGLED:
	{
		ARG_DEF(struct pwc_leds, leds)

		ret = pwc_get_leds(pdev, &ARGR(leds).led_on, &ARGR(leds).led_off);
		ARG_OUT(leds)
		break;
	}

	case VIDIOCPWCSCONTOUR:
	{
		ARG_DEF(int, contour)

		ARG_IN(contour)
		ret = pwc_set_contour(pdev, ARGR(contour));
		break;
	}

	case VIDIOCPWCGCONTOUR:
	{
		ARG_DEF(int, contour)

		ret = pwc_get_contour(pdev, ARGA(contour));
		ARG_OUT(contour)
		break;
	}

	case VIDIOCPWCSBACKLIGHT:
	{
		ARG_DEF(int, backlight)

		ARG_IN(backlight)
		ret = pwc_set_backlight(pdev, ARGR(backlight));
		break;
	}

	case VIDIOCPWCGBACKLIGHT:
	{
		ARG_DEF(int, backlight)

		ret = pwc_get_backlight(pdev, ARGA(backlight));
		ARG_OUT(backlight)
		break;
	}

	case VIDIOCPWCSFLICKER:
	{
		ARG_DEF(int, flicker)

		ARG_IN(flicker)
		ret = pwc_set_flicker(pdev, ARGR(flicker));
		break;
	}

	case VIDIOCPWCGFLICKER:
	{
		ARG_DEF(int, flicker)

		ret = pwc_get_flicker(pdev, ARGA(flicker));
		ARG_OUT(flicker)
		break;
	}

	case VIDIOCPWCSDYNNOISE:
	{
		ARG_DEF(int, dynnoise)

		ARG_IN(dynnoise)
		ret = pwc_set_dynamic_noise(pdev, ARGR(dynnoise));
		break;
	}

	case VIDIOCPWCGDYNNOISE:
	{
		ARG_DEF(int, dynnoise)

		ret = pwc_get_dynamic_noise(pdev, ARGA(dynnoise));
		ARG_OUT(dynnoise);
		break;
	}

	case VIDIOCPWCGREALSIZE:
	{
		ARG_DEF(struct pwc_imagesize, size)

		ARGR(size).width = pdev->image.x;
		ARGR(size).height = pdev->image.y;
		ARG_OUT(size)
		break;
	}

	case VIDIOCPWCMPTRESET:
	{
		if (pdev->features & FEATURE_MOTOR_PANTILT)
		{
			ARG_DEF(int, flags)

			ARG_IN(flags)
			ret = pwc_mpt_reset(pdev, ARGR(flags));
		}
		else
		{
			ret = -ENXIO;
		}
		break;
	}

	case VIDIOCPWCMPTGRANGE:
	{
		if (pdev->features & FEATURE_MOTOR_PANTILT)
		{
			ARG_DEF(struct pwc_mpt_range, range)

			ARGR(range) = pdev->angle_range;
			ARG_OUT(range)
		}
		else
		{
			ret = -ENXIO;
		}
		break;
	}

	case VIDIOCPWCMPTSANGLE:
	{
		int new_pan, new_tilt;

		if (pdev->features & FEATURE_MOTOR_PANTILT)
		{
			ARG_DEF(struct pwc_mpt_angles, angles)

			ARG_IN(angles)
			/* The camera can only set relative angles, so
			   do some calculations when getting an absolute angle .
			 */
			if (ARGR(angles).absolute)
			{
				new_pan  = ARGR(angles).pan;
				new_tilt = ARGR(angles).tilt;
			}
			else
			{
				new_pan  = pdev->pan_angle  + ARGR(angles).pan;
				new_tilt = pdev->tilt_angle + ARGR(angles).tilt;
			}
			ret = pwc_mpt_set_angle(pdev, new_pan, new_tilt);
		}
		else
		{
			ret = -ENXIO;
		}
		break;
	}

	case VIDIOCPWCMPTGANGLE:
	{

		if (pdev->features & FEATURE_MOTOR_PANTILT)
		{
			ARG_DEF(struct pwc_mpt_angles, angles)

			ARGR(angles).absolute = 1;
			ARGR(angles).pan  = pdev->pan_angle;
			ARGR(angles).tilt = pdev->tilt_angle;
			ARG_OUT(angles)
		}
		else
		{
			ret = -ENXIO;
		}
		break;
	}

	case VIDIOCPWCMPTSTATUS:
	{
		if (pdev->features & FEATURE_MOTOR_PANTILT)
		{
			ARG_DEF(struct pwc_mpt_status, status)

			ret = pwc_mpt_get_status(pdev, ARGA(status));
			ARG_OUT(status)
		}
		else
		{
			ret = -ENXIO;
		}
		break;
	}

	case VIDIOCPWCGVIDCMD:
	{
		ARG_DEF(struct pwc_video_command, cmd);

		ARGR(cmd).type = pdev->type;
		ARGR(cmd).release = pdev->release;
		ARGR(cmd).command_len = pdev->cmd_len;
		memcpy(&ARGR(cmd).command_buf, pdev->cmd_buf, pdev->cmd_len);
		ARGR(cmd).bandlength = pdev->vbandlength;
		ARGR(cmd).frame_size = pdev->frame_size;
		ARG_OUT(cmd)
		break;
	}
	/*
	case VIDIOCPWCGVIDTABLE:
	{
		ARG_DEF(struct pwc_table_init_buffer, table);
		ARGR(table).len = pdev->cmd_len;
		memcpy(&ARGR(table).buffer, pdev->decompress_data, pdev->decompressor->table_size);
		ARG_OUT(table)
		break;
	}
	*/

	default:
		ret = -ENOIOCTLCMD;
		break;
	}

	if (ret > 0)
		return 0;
	return ret;
}


/* vim: set cinoptions= formatoptions=croql cindent shiftwidth=8 tabstop=8: */