summaryrefslogtreecommitdiffstats
path: root/drivers/media/pci/sta2x11/sta2x11_vip.c
blob: 59b3a36a3639d86167736b224b8aae88d57c4e09 (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
/*
 * This is the driver for the STA2x11 Video Input Port.
 *
 * Copyright (C) 2012       ST Microelectronics
 *     author: Federico Vaga <federico.vaga@gmail.com>
 * Copyright (C) 2010       WindRiver Systems, Inc.
 *     authors: Andreas Kies <andreas.kies@windriver.com>
 *              Vlad Lungu   <vlad.lungu@windriver.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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.,
 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * The full GNU General Public License is included in this distribution in
 * the file called "COPYING".
 *
 */

#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/videodev2.h>
#include <linux/kmod.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-fh.h>
#include <media/v4l2-event.h>
#include <media/videobuf2-dma-contig.h>

#include "sta2x11_vip.h"

#define DRV_VERSION "1.3"

#ifndef PCI_DEVICE_ID_STMICRO_VIP
#define PCI_DEVICE_ID_STMICRO_VIP 0xCC0D
#endif

#define MAX_FRAMES 4

/*Register offsets*/
#define DVP_CTL		0x00
#define DVP_TFO		0x04
#define DVP_TFS		0x08
#define DVP_BFO		0x0C
#define DVP_BFS		0x10
#define DVP_VTP		0x14
#define DVP_VBP		0x18
#define DVP_VMP		0x1C
#define DVP_ITM		0x98
#define DVP_ITS		0x9C
#define DVP_STA		0xA0
#define DVP_HLFLN	0xA8
#define DVP_RGB		0xC0
#define DVP_PKZ		0xF0

/*Register fields*/
#define DVP_CTL_ENA	0x00000001
#define DVP_CTL_RST	0x80000000
#define DVP_CTL_DIS	(~0x00040001)

#define DVP_IT_VSB	0x00000008
#define DVP_IT_VST	0x00000010
#define DVP_IT_FIFO	0x00000020

#define DVP_HLFLN_SD	0x00000001

#define SAVE_COUNT 8
#define AUX_COUNT 3
#define IRQ_COUNT 1


struct vip_buffer {
	struct vb2_buffer	vb;
	struct list_head	list;
	dma_addr_t		dma;
};
static inline struct vip_buffer *to_vip_buffer(struct vb2_buffer *vb2)
{
	return container_of(vb2, struct vip_buffer, vb);
}

/**
 * struct sta2x11_vip - All internal data for one instance of device
 * @v4l2_dev: device registered in v4l layer
 * @video_dev: properties of our device
 * @pdev: PCI device
 * @adapter: contains I2C adapter information
 * @register_save_area: All relevant register are saved here during suspend
 * @decoder: contains information about video DAC
 * @ctrl_hdl: handler for control framework
 * @format: pixel format, fixed UYVY
 * @std: video standard (e.g. PAL/NTSC)
 * @input: input line for video signal ( 0 or 1 )
 * @disabled: Device is in power down state
 * @slock: for excluse acces of registers
 * @alloc_ctx: context for videobuf2
 * @vb_vidq: queue maintained by videobuf2 layer
 * @buffer_list: list of buffer in use
 * @sequence: sequence number of acquired buffer
 * @active: current active buffer
 * @lock: used in videobuf2 callback
 * @tcount: Number of top frames
 * @bcount: Number of bottom frames
 * @overflow: Number of FIFO overflows
 * @iomem: hardware base address
 * @config: I2C and gpio config from platform
 *
 * All non-local data is accessed via this structure.
 */
struct sta2x11_vip {
	struct v4l2_device v4l2_dev;
	struct video_device video_dev;
	struct pci_dev *pdev;
	struct i2c_adapter *adapter;
	unsigned int register_save_area[IRQ_COUNT + SAVE_COUNT + AUX_COUNT];
	struct v4l2_subdev *decoder;
	struct v4l2_ctrl_handler ctrl_hdl;


	struct v4l2_pix_format format;
	v4l2_std_id std;
	unsigned int input;
	int disabled;
	spinlock_t slock;

	struct vb2_alloc_ctx *alloc_ctx;
	struct vb2_queue vb_vidq;
	struct list_head buffer_list;
	unsigned int sequence;
	struct vip_buffer *active; /* current active buffer */
	spinlock_t lock; /* Used in videobuf2 callback */

	/* Interrupt counters */
	int tcount, bcount;
	int overflow;

	void __iomem *iomem;	/* I/O Memory */
	struct vip_config *config;
};

static const unsigned int registers_to_save[AUX_COUNT] = {
	DVP_HLFLN, DVP_RGB, DVP_PKZ
};

static struct v4l2_pix_format formats_50[] = {
	{			/*PAL interlaced */
	 .width = 720,
	 .height = 576,
	 .pixelformat = V4L2_PIX_FMT_UYVY,
	 .field = V4L2_FIELD_INTERLACED,
	 .bytesperline = 720 * 2,
	 .sizeimage = 720 * 2 * 576,
	 .colorspace = V4L2_COLORSPACE_SMPTE170M},
	{			/*PAL top */
	 .width = 720,
	 .height = 288,
	 .pixelformat = V4L2_PIX_FMT_UYVY,
	 .field = V4L2_FIELD_TOP,
	 .bytesperline = 720 * 2,
	 .sizeimage = 720 * 2 * 288,
	 .colorspace = V4L2_COLORSPACE_SMPTE170M},
	{			/*PAL bottom */
	 .width = 720,
	 .height = 288,
	 .pixelformat = V4L2_PIX_FMT_UYVY,
	 .field = V4L2_FIELD_BOTTOM,
	 .bytesperline = 720 * 2,
	 .sizeimage = 720 * 2 * 288,
	 .colorspace = V4L2_COLORSPACE_SMPTE170M},

};

static struct v4l2_pix_format formats_60[] = {
	{			/*NTSC interlaced */
	 .width = 720,
	 .height = 480,
	 .pixelformat = V4L2_PIX_FMT_UYVY,
	 .field = V4L2_FIELD_INTERLACED,
	 .bytesperline = 720 * 2,
	 .sizeimage = 720 * 2 * 480,
	 .colorspace = V4L2_COLORSPACE_SMPTE170M},
	{			/*NTSC top */
	 .width = 720,
	 .height = 240,
	 .pixelformat = V4L2_PIX_FMT_UYVY,
	 .field = V4L2_FIELD_TOP,
	 .bytesperline = 720 * 2,
	 .sizeimage = 720 * 2 * 240,
	 .colorspace = V4L2_COLORSPACE_SMPTE170M},
	{			/*NTSC bottom */
	 .width = 720,
	 .height = 240,
	 .pixelformat = V4L2_PIX_FMT_UYVY,
	 .field = V4L2_FIELD_BOTTOM,
	 .bytesperline = 720 * 2,
	 .sizeimage = 720 * 2 * 240,
	 .colorspace = V4L2_COLORSPACE_SMPTE170M},
};

/* Write VIP register */
static inline void reg_write(struct sta2x11_vip *vip, unsigned int reg, u32 val)
{
	iowrite32((val), (vip->iomem)+(reg));
}
/* Read VIP register */
static inline u32 reg_read(struct sta2x11_vip *vip, unsigned int reg)
{
	return  ioread32((vip->iomem)+(reg));
}
/* Start DMA acquisition */
static void start_dma(struct sta2x11_vip *vip, struct vip_buffer *vip_buf)
{
	unsigned long offset = 0;

	if (vip->format.field == V4L2_FIELD_INTERLACED)
		offset = vip->format.width * 2;

	spin_lock_irq(&vip->slock);
	/* Enable acquisition */
	reg_write(vip, DVP_CTL, reg_read(vip, DVP_CTL) | DVP_CTL_ENA);
	/* Set Top and Bottom Field memory address */
	reg_write(vip, DVP_VTP, (u32)vip_buf->dma);
	reg_write(vip, DVP_VBP, (u32)vip_buf->dma + offset);
	spin_unlock_irq(&vip->slock);
}

/* Fetch the next buffer to activate */
static void vip_active_buf_next(struct sta2x11_vip *vip)
{
	/* Get the next buffer */
	spin_lock(&vip->lock);
	if (list_empty(&vip->buffer_list)) {/* No available buffer */
		spin_unlock(&vip->lock);
		return;
	}
	vip->active = list_first_entry(&vip->buffer_list,
				       struct vip_buffer,
				       list);
	/* Reset Top and Bottom counter */
	vip->tcount = 0;
	vip->bcount = 0;
	spin_unlock(&vip->lock);
	if (vb2_is_streaming(&vip->vb_vidq)) {	/* streaming is on */
		start_dma(vip, vip->active);	/* start dma capture */
	}
}


/* Videobuf2 Operations */
static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
		       unsigned int *nbuffers, unsigned int *nplanes,
		       unsigned int sizes[], void *alloc_ctxs[])
{
	struct sta2x11_vip *vip = vb2_get_drv_priv(vq);

	if (!(*nbuffers) || *nbuffers < MAX_FRAMES)
		*nbuffers = MAX_FRAMES;

	*nplanes = 1;
	sizes[0] = vip->format.sizeimage;
	alloc_ctxs[0] = vip->alloc_ctx;

	vip->sequence = 0;
	vip->active = NULL;
	vip->tcount = 0;
	vip->bcount = 0;

	return 0;
};
static int buffer_init(struct vb2_buffer *vb)
{
	struct vip_buffer *vip_buf = to_vip_buffer(vb);

	vip_buf->dma = vb2_dma_contig_plane_dma_addr(vb, 0);
	INIT_LIST_HEAD(&vip_buf->list);
	return 0;
}

static int buffer_prepare(struct vb2_buffer *vb)
{
	struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
	struct vip_buffer *vip_buf = to_vip_buffer(vb);
	unsigned long size;

	size = vip->format.sizeimage;
	if (vb2_plane_size(vb, 0) < size) {
		v4l2_err(&vip->v4l2_dev, "buffer too small (%lu < %lu)\n",
			 vb2_plane_size(vb, 0), size);
		return -EINVAL;
	}

	vb2_set_plane_payload(&vip_buf->vb, 0, size);

	return 0;
}
static void buffer_queue(struct vb2_buffer *vb)
{
	struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
	struct vip_buffer *vip_buf = to_vip_buffer(vb);

	spin_lock(&vip->lock);
	list_add_tail(&vip_buf->list, &vip->buffer_list);
	if (!vip->active) {	/* No active buffer, active the first one */
		vip->active = list_first_entry(&vip->buffer_list,
					       struct vip_buffer,
					       list);
		if (vb2_is_streaming(&vip->vb_vidq))	/* streaming is on */
			start_dma(vip, vip_buf);	/* start dma capture */
	}
	spin_unlock(&vip->lock);
}
static void buffer_finish(struct vb2_buffer *vb)
{
	struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
	struct vip_buffer *vip_buf = to_vip_buffer(vb);

	/* Buffer handled, remove it from the list */
	spin_lock(&vip->lock);
	list_del_init(&vip_buf->list);
	spin_unlock(&vip->lock);

	if (vb2_is_streaming(vb->vb2_queue))
		vip_active_buf_next(vip);
}

static int start_streaming(struct vb2_queue *vq, unsigned int count)
{
	struct sta2x11_vip *vip = vb2_get_drv_priv(vq);

	spin_lock_irq(&vip->slock);
	/* Enable interrupt VSYNC Top and Bottom*/
	reg_write(vip, DVP_ITM, DVP_IT_VSB | DVP_IT_VST);
	spin_unlock_irq(&vip->slock);

	if (count)
		start_dma(vip, vip->active);

	return 0;
}

/* abort streaming and wait for last buffer */
static void stop_streaming(struct vb2_queue *vq)
{
	struct sta2x11_vip *vip = vb2_get_drv_priv(vq);
	struct vip_buffer *vip_buf, *node;

	/* Disable acquisition */
	reg_write(vip, DVP_CTL, reg_read(vip, DVP_CTL) & ~DVP_CTL_ENA);
	/* Disable all interrupts */
	reg_write(vip, DVP_ITM, 0);

	/* Release all active buffers */
	spin_lock(&vip->lock);
	list_for_each_entry_safe(vip_buf, node, &vip->buffer_list, list) {
		vb2_buffer_done(&vip_buf->vb, VB2_BUF_STATE_ERROR);
		list_del(&vip_buf->list);
	}
	spin_unlock(&vip->lock);
}

static struct vb2_ops vip_video_qops = {
	.queue_setup		= queue_setup,
	.buf_init		= buffer_init,
	.buf_prepare		= buffer_prepare,
	.buf_finish		= buffer_finish,
	.buf_queue		= buffer_queue,
	.start_streaming	= start_streaming,
	.stop_streaming		= stop_streaming,
};


/* File Operations */
static const struct v4l2_file_operations vip_fops = {
	.owner = THIS_MODULE,
	.open = v4l2_fh_open,
	.release = vb2_fop_release,
	.unlocked_ioctl = video_ioctl2,
	.read = vb2_fop_read,
	.mmap = vb2_fop_mmap,
	.poll = vb2_fop_poll
};


/**
 * vidioc_querycap - return capabilities of device
 * @file: descriptor of device
 * @cap: contains return values
 *
 * the capabilities of the device are returned
 *
 * return value: 0, no error.
 */
static int vidioc_querycap(struct file *file, void *priv,
			   struct v4l2_capability *cap)
{
	struct sta2x11_vip *vip = video_drvdata(file);

	strcpy(cap->driver, KBUILD_MODNAME);
	strcpy(cap->card, KBUILD_MODNAME);
	snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
		 pci_name(vip->pdev));
	cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
			   V4L2_CAP_STREAMING;
	cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;

	return 0;
}

/**
 * vidioc_s_std - set video standard
 * @file: descriptor of device
 * @std: contains standard to be set
 *
 * the video standard is set
 *
 * return value: 0, no error.
 *
 * -EIO, no input signal detected
 *
 * other, returned from video DAC.
 */
static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id std)
{
	struct sta2x11_vip *vip = video_drvdata(file);
	v4l2_std_id oldstd = vip->std, newstd;
	int status;

	if (V4L2_STD_ALL == std) {
		v4l2_subdev_call(vip->decoder, video, s_std, std);
		ssleep(2);
		v4l2_subdev_call(vip->decoder, video, querystd, &newstd);
		v4l2_subdev_call(vip->decoder, video, g_input_status, &status);
		if (status & V4L2_IN_ST_NO_SIGNAL)
			return -EIO;
		std = vip->std = newstd;
		if (oldstd != std) {
			if (V4L2_STD_525_60 & std)
				vip->format = formats_60[0];
			else
				vip->format = formats_50[0];
		}
		return 0;
	}

	if (oldstd != std) {
		if (V4L2_STD_525_60 & std)
			vip->format = formats_60[0];
		else
			vip->format = formats_50[0];
	}

	return v4l2_subdev_call(vip->decoder, video, s_std, std);
}

/**
 * vidioc_g_std - get video standard
 * @file: descriptor of device
 * @std: contains return values
 *
 * the current video standard is returned
 *
 * return value: 0, no error.
 */
static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *std)
{
	struct sta2x11_vip *vip = video_drvdata(file);

	*std = vip->std;
	return 0;
}

/**
 * vidioc_querystd - get possible video standards
 * @file: descriptor of device
 * @std: contains return values
 *
 * all possible video standards are returned
 *
 * return value: delivered by video DAC routine.
 */
static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *std)
{
	struct sta2x11_vip *vip = video_drvdata(file);

	return v4l2_subdev_call(vip->decoder, video, querystd, std);
}

static int vidioc_enum_input(struct file *file, void *priv,
			     struct v4l2_input *inp)
{
	if (inp->index > 1)
		return -EINVAL;

	inp->type = V4L2_INPUT_TYPE_CAMERA;
	inp->std = V4L2_STD_ALL;
	sprintf(inp->name, "Camera %u", inp->index);

	return 0;
}

/**
 * vidioc_s_input - set input line
 * @file: descriptor of device
 * @i: new input line number
 *
 * the current active input line is set
 *
 * return value: 0, no error.
 *
 * -EINVAL, line number out of range
 */
static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
{
	struct sta2x11_vip *vip = video_drvdata(file);
	int ret;

	if (i > 1)
		return -EINVAL;
	ret = v4l2_subdev_call(vip->decoder, video, s_routing, i, 0, 0);

	if (!ret)
		vip->input = i;

	return 0;
}

/**
 * vidioc_g_input - return input line
 * @file: descriptor of device
 * @i: returned input line number
 *
 * the current active input line is returned
 *
 * return value: always 0.
 */
static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
{
	struct sta2x11_vip *vip = video_drvdata(file);

	*i = vip->input;
	return 0;
}

/**
 * vidioc_enum_fmt_vid_cap - return video capture format
 * @f: returned format information
 *
 * returns name and format of video capture
 * Only UYVY is supported by hardware.
 *
 * return value: always 0.
 */
static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
				   struct v4l2_fmtdesc *f)
{

	if (f->index != 0)
		return -EINVAL;

	strcpy(f->description, "4:2:2, packed, UYVY");
	f->pixelformat = V4L2_PIX_FMT_UYVY;
	f->flags = 0;
	return 0;
}

/**
 * vidioc_try_fmt_vid_cap - set video capture format
 * @file: descriptor of device
 * @f: new format
 *
 * new video format is set which includes width and
 * field type. width is fixed to 720, no scaling.
 * Only UYVY is supported by this hardware.
 * the minimum height is 200, the maximum is 576 (PAL)
 *
 * return value: 0, no error
 *
 * -EINVAL, pixel or field format not supported
 *
 */
static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
				  struct v4l2_format *f)
{
	struct sta2x11_vip *vip = video_drvdata(file);
	int interlace_lim;

	if (V4L2_PIX_FMT_UYVY != f->fmt.pix.pixelformat) {
		v4l2_warn(&vip->v4l2_dev, "Invalid format, only UYVY supported\n");
		return -EINVAL;
	}

	if (V4L2_STD_525_60 & vip->std)
		interlace_lim = 240;
	else
		interlace_lim = 288;

	switch (f->fmt.pix.field) {
	default:
	case V4L2_FIELD_ANY:
		if (interlace_lim < f->fmt.pix.height)
			f->fmt.pix.field = V4L2_FIELD_INTERLACED;
		else
			f->fmt.pix.field = V4L2_FIELD_BOTTOM;
		break;
	case V4L2_FIELD_TOP:
	case V4L2_FIELD_BOTTOM:
		if (interlace_lim < f->fmt.pix.height)
			f->fmt.pix.height = interlace_lim;
		break;
	case V4L2_FIELD_INTERLACED:
		break;
	}

	/* It is the only supported format */
	f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
	f->fmt.pix.height &= ~1;
	if (2 * interlace_lim < f->fmt.pix.height)
		f->fmt.pix.height = 2 * interlace_lim;
	if (200 > f->fmt.pix.height)
		f->fmt.pix.height = 200;
	f->fmt.pix.width = 720;
	f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
	f->fmt.pix.sizeimage = f->fmt.pix.width * 2 * f->fmt.pix.height;
	f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
	return 0;
}

/**
 * vidioc_s_fmt_vid_cap - set current video format parameters
 * @file: descriptor of device
 * @f: returned format information
 *
 * set new capture format
 * return value: 0, no error
 *
 * other, delivered by video DAC routine.
 */
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
				struct v4l2_format *f)
{
	struct sta2x11_vip *vip = video_drvdata(file);
	unsigned int t_stop, b_stop, pitch;
	int ret;

	ret = vidioc_try_fmt_vid_cap(file, priv, f);
	if (ret)
		return ret;

	if (vb2_is_busy(&vip->vb_vidq)) {
		/* Can't change format during acquisition */
		v4l2_err(&vip->v4l2_dev, "device busy\n");
		return -EBUSY;
	}
	vip->format = f->fmt.pix;
	switch (vip->format.field) {
	case V4L2_FIELD_INTERLACED:
		t_stop = ((vip->format.height / 2 - 1) << 16) |
			 (2 * vip->format.width - 1);
		b_stop = t_stop;
		pitch = 4 * vip->format.width;
		break;
	case V4L2_FIELD_TOP:
		t_stop = ((vip->format.height - 1) << 16) |
			 (2 * vip->format.width - 1);
		b_stop = (0 << 16) | (2 * vip->format.width - 1);
		pitch = 2 * vip->format.width;
		break;
	case V4L2_FIELD_BOTTOM:
		t_stop = (0 << 16) | (2 * vip->format.width - 1);
		b_stop = (vip->format.height << 16) |
			 (2 * vip->format.width - 1);
		pitch = 2 * vip->format.width;
		break;
	default:
		v4l2_err(&vip->v4l2_dev, "unknown field format\n");
		return -EINVAL;
	}

	spin_lock_irq(&vip->slock);
	/* Y-X Top Field Offset */
	reg_write(vip, DVP_TFO, 0);
	/* Y-X Bottom Field Offset */
	reg_write(vip, DVP_BFO, 0);
	/* Y-X Top Field Stop*/
	reg_write(vip, DVP_TFS, t_stop);
	/* Y-X Bottom Field Stop */
	reg_write(vip, DVP_BFS, b_stop);
	/* Video Memory Pitch */
	reg_write(vip, DVP_VMP, pitch);
	spin_unlock_irq(&vip->slock);

	return 0;
}

/**
 * vidioc_g_fmt_vid_cap - get current video format parameters
 * @file: descriptor of device
 * @f: contains format information
 *
 * returns current video format parameters
 *
 * return value: 0, always successful
 */
static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
				struct v4l2_format *f)
{
	struct sta2x11_vip *vip = video_drvdata(file);

	f->fmt.pix = vip->format;

	return 0;
}

static const struct v4l2_ioctl_ops vip_ioctl_ops = {
	.vidioc_querycap = vidioc_querycap,
	/* FMT handling */
	.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
	.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
	.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
	.vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
	/* Buffer handlers */
	.vidioc_create_bufs = vb2_ioctl_create_bufs,
	.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
	.vidioc_reqbufs = vb2_ioctl_reqbufs,
	.vidioc_querybuf = vb2_ioctl_querybuf,
	.vidioc_qbuf = vb2_ioctl_qbuf,
	.vidioc_dqbuf = vb2_ioctl_dqbuf,
	/* Stream on/off */
	.vidioc_streamon = vb2_ioctl_streamon,
	.vidioc_streamoff = vb2_ioctl_streamoff,
	/* Standard handling */
	.vidioc_g_std = vidioc_g_std,
	.vidioc_s_std = vidioc_s_std,
	.vidioc_querystd = vidioc_querystd,
	/* Input handling */
	.vidioc_enum_input = vidioc_enum_input,
	.vidioc_g_input = vidioc_g_input,
	.vidioc_s_input = vidioc_s_input,
	/* Log status ioctl */
	.vidioc_log_status = v4l2_ctrl_log_status,
	/* Event handling */
	.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};

static struct video_device video_dev_template = {
	.name = KBUILD_MODNAME,
	.release = video_device_release_empty,
	.fops = &vip_fops,
	.ioctl_ops = &vip_ioctl_ops,
	.tvnorms = V4L2_STD_ALL,
};

/**
 * vip_irq - interrupt routine
 * @irq: Number of interrupt ( not used, correct number is assumed )
 * @vip: local data structure containing all information
 *
 * check for both frame interrupts set ( top and bottom ).
 * check FIFO overflow, but limit number of log messages after open.
 * signal a complete buffer if done
 *
 * return value: IRQ_NONE, interrupt was not generated by VIP
 *
 * IRQ_HANDLED, interrupt done.
 */
static irqreturn_t vip_irq(int irq, struct sta2x11_vip *vip)
{
	unsigned int status;

	status = reg_read(vip, DVP_ITS);

	if (!status)		/* No interrupt to handle */
		return IRQ_NONE;

	if (status & DVP_IT_FIFO)
		if (vip->overflow++ > 5)
			pr_info("VIP: fifo overflow\n");

	if ((status & DVP_IT_VST) && (status & DVP_IT_VSB)) {
		/* this is bad, we are too slow, hope the condition is gone
		 * on the next frame */
		return IRQ_HANDLED;
	}

	if (status & DVP_IT_VST)
		if ((++vip->tcount) < 2)
			return IRQ_HANDLED;
	if (status & DVP_IT_VSB) {
		vip->bcount++;
		return IRQ_HANDLED;
	}

	if (vip->active) { /* Acquisition is over on this buffer */
		/* Disable acquisition */
		reg_write(vip, DVP_CTL, reg_read(vip, DVP_CTL) & ~DVP_CTL_ENA);
		/* Remove the active buffer from the list */
		v4l2_get_timestamp(&vip->active->vb.v4l2_buf.timestamp);
		vip->active->vb.v4l2_buf.sequence = vip->sequence++;
		vb2_buffer_done(&vip->active->vb, VB2_BUF_STATE_DONE);
	}

	return IRQ_HANDLED;
}

static void sta2x11_vip_init_register(struct sta2x11_vip *vip)
{
	/* Register initialization */
	spin_lock_irq(&vip->slock);
	/* Clean interrupt */
	reg_read(vip, DVP_ITS);
	/* Enable Half Line per vertical */
	reg_write(vip, DVP_HLFLN, DVP_HLFLN_SD);
	/* Reset VIP control */
	reg_write(vip, DVP_CTL, DVP_CTL_RST);
	/* Clear VIP control */
	reg_write(vip, DVP_CTL, 0);
	spin_unlock_irq(&vip->slock);
}
static void sta2x11_vip_clear_register(struct sta2x11_vip *vip)
{
	spin_lock_irq(&vip->slock);
	/* Disable interrupt */
	reg_write(vip, DVP_ITM, 0);
	/* Reset VIP Control */
	reg_write(vip, DVP_CTL, DVP_CTL_RST);
	/* Clear VIP Control */
	reg_write(vip, DVP_CTL, 0);
	/* Clean VIP Interrupt */
	reg_read(vip, DVP_ITS);
	spin_unlock_irq(&vip->slock);
}
static int sta2x11_vip_init_buffer(struct sta2x11_vip *vip)
{
	int err;

	err = dma_set_coherent_mask(&vip->pdev->dev, DMA_BIT_MASK(29));
	if (err) {
		v4l2_err(&vip->v4l2_dev, "Cannot configure coherent mask");
		return err;
	}
	memset(&vip->vb_vidq, 0, sizeof(struct vb2_queue));
	vip->vb_vidq.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
	vip->vb_vidq.io_modes = VB2_MMAP | VB2_READ;
	vip->vb_vidq.drv_priv = vip;
	vip->vb_vidq.buf_struct_size = sizeof(struct vip_buffer);
	vip->vb_vidq.ops = &vip_video_qops;
	vip->vb_vidq.mem_ops = &vb2_dma_contig_memops;
	vip->vb_vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
	err = vb2_queue_init(&vip->vb_vidq);
	if (err)
		return err;
	INIT_LIST_HEAD(&vip->buffer_list);
	spin_lock_init(&vip->lock);


	vip->alloc_ctx = vb2_dma_contig_init_ctx(&vip->pdev->dev);
	if (IS_ERR(vip->alloc_ctx)) {
		v4l2_err(&vip->v4l2_dev, "Can't allocate buffer context");
		return PTR_ERR(vip->alloc_ctx);
	}

	return 0;
}
static void sta2x11_vip_release_buffer(struct sta2x11_vip *vip)
{
	vb2_dma_contig_cleanup_ctx(vip->alloc_ctx);
}
static int sta2x11_vip_init_controls(struct sta2x11_vip *vip)
{
	/*
	 * Inititialize an empty control so VIP can inerithing controls
	 * from ADV7180
	 */
	v4l2_ctrl_handler_init(&vip->ctrl_hdl, 0);

	vip->v4l2_dev.ctrl_handler = &vip->ctrl_hdl;
	if (vip->ctrl_hdl.error) {
		int err = vip->ctrl_hdl.error;

		v4l2_ctrl_handler_free(&vip->ctrl_hdl);
		return err;
	}

	return 0;
}

/**
 * vip_gpio_reserve - reserve gpio pin
 * @dev: device
 * @pin: GPIO pin number
 * @dir: direction, input or output
 * @name: GPIO pin name
 *
 */
static int vip_gpio_reserve(struct device *dev, int pin, int dir,
			    const char *name)
{
	int ret;

	if (pin == -1)
		return 0;

	ret = gpio_request(pin, name);
	if (ret) {
		dev_err(dev, "Failed to allocate pin %d (%s)\n", pin, name);
		return ret;
	}

	ret = gpio_direction_output(pin, dir);
	if (ret) {
		dev_err(dev, "Failed to set direction for pin %d (%s)\n",
			pin, name);
		gpio_free(pin);
		return ret;
	}

	ret = gpio_export(pin, false);
	if (ret) {
		dev_err(dev, "Failed to export pin %d (%s)\n", pin, name);
		gpio_free(pin);
		return ret;
	}

	return 0;
}

/**
 * vip_gpio_release - release gpio pin
 * @dev: device
 * @pin: GPIO pin number
 * @name: GPIO pin name
 *
 */
static void vip_gpio_release(struct device *dev, int pin, const char *name)
{
	if (pin != -1) {
		dev_dbg(dev, "releasing pin %d (%s)\n",	pin, name);
		gpio_unexport(pin);
		gpio_free(pin);
	}
}

/**
 * sta2x11_vip_init_one - init one instance of video device
 * @pdev: PCI device
 * @ent: (not used)
 *
 * allocate reset pins for DAC.
 * Reset video DAC, this is done via reset line.
 * allocate memory for managing device
 * request interrupt
 * map IO region
 * register device
 * find and initialize video DAC
 *
 * return value: 0, no error
 *
 * -ENOMEM, no memory
 *
 * -ENODEV, device could not be detected or registered
 */
static int sta2x11_vip_init_one(struct pci_dev *pdev,
				const struct pci_device_id *ent)
{
	int ret;
	struct sta2x11_vip *vip;
	struct vip_config *config;

	/* Check if hardware support 26-bit DMA */
	if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(26))) {
		dev_err(&pdev->dev, "26-bit DMA addressing not available\n");
		return -EINVAL;
	}
	/* Enable PCI */
	ret = pci_enable_device(pdev);
	if (ret)
		return ret;

	/* Get VIP platform data */
	config = dev_get_platdata(&pdev->dev);
	if (!config) {
		dev_info(&pdev->dev, "VIP slot disabled\n");
		ret = -EINVAL;
		goto disable;
	}

	/* Power configuration */
	ret = vip_gpio_reserve(&pdev->dev, config->pwr_pin, 0,
			       config->pwr_name);
	if (ret)
		goto disable;

	if (config->reset_pin >= 0) {
		ret = vip_gpio_reserve(&pdev->dev, config->reset_pin, 0,
				       config->reset_name);
		if (ret) {
			vip_gpio_release(&pdev->dev, config->pwr_pin,
					 config->pwr_name);
			goto disable;
		}
	}
	if (config->pwr_pin != -1) {
		/* Datasheet says 5ms between PWR and RST */
		usleep_range(5000, 25000);
		ret = gpio_direction_output(config->pwr_pin, 1);
	}

	if (config->reset_pin != -1) {
		/* Datasheet says 5ms between PWR and RST */
		usleep_range(5000, 25000);
		ret = gpio_direction_output(config->reset_pin, 1);
	}
	usleep_range(5000, 25000);

	/* Allocate a new VIP instance */
	vip = kzalloc(sizeof(struct sta2x11_vip), GFP_KERNEL);
	if (!vip) {
		ret = -ENOMEM;
		goto release_gpios;
	}
	vip->pdev = pdev;
	vip->std = V4L2_STD_PAL;
	vip->format = formats_50[0];
	vip->config = config;

	ret = sta2x11_vip_init_controls(vip);
	if (ret)
		goto free_mem;
	ret = v4l2_device_register(&pdev->dev, &vip->v4l2_dev);
	if (ret)
		goto free_mem;

	dev_dbg(&pdev->dev, "BAR #0 at 0x%lx 0x%lx irq %d\n",
		(unsigned long)pci_resource_start(pdev, 0),
		(unsigned long)pci_resource_len(pdev, 0), pdev->irq);

	pci_set_master(pdev);

	ret = pci_request_regions(pdev, KBUILD_MODNAME);
	if (ret)
		goto unreg;

	vip->iomem = pci_iomap(pdev, 0, 0x100);
	if (!vip->iomem) {
		ret = -ENOMEM;
		goto release;
	}

	pci_enable_msi(pdev);

	/* Initialize buffer */
	ret = sta2x11_vip_init_buffer(vip);
	if (ret)
		goto unmap;

	spin_lock_init(&vip->slock);

	ret = request_irq(pdev->irq,
			  (irq_handler_t) vip_irq,
			  IRQF_SHARED, KBUILD_MODNAME, vip);
	if (ret) {
		dev_err(&pdev->dev, "request_irq failed\n");
		ret = -ENODEV;
		goto release_buf;
	}

	/* Initialize and register video device */
	vip->video_dev = video_dev_template;
	vip->video_dev.v4l2_dev = &vip->v4l2_dev;
	vip->video_dev.queue = &vip->vb_vidq;
	video_set_drvdata(&vip->video_dev, vip);

	ret = video_register_device(&vip->video_dev, VFL_TYPE_GRABBER, -1);
	if (ret)
		goto vrelease;

	/* Get ADV7180 subdevice */
	vip->adapter = i2c_get_adapter(vip->config->i2c_id);
	if (!vip->adapter) {
		ret = -ENODEV;
		dev_err(&pdev->dev, "no I2C adapter found\n");
		goto vunreg;
	}

	vip->decoder = v4l2_i2c_new_subdev(&vip->v4l2_dev, vip->adapter,
					   "adv7180", vip->config->i2c_addr,
					   NULL);
	if (!vip->decoder) {
		ret = -ENODEV;
		dev_err(&pdev->dev, "no decoder found\n");
		goto vunreg;
	}

	i2c_put_adapter(vip->adapter);
	v4l2_subdev_call(vip->decoder, core, init, 0);

	sta2x11_vip_init_register(vip);

	dev_info(&pdev->dev, "STA2X11 Video Input Port (VIP) loaded\n");
	return 0;

vunreg:
	video_set_drvdata(&vip->video_dev, NULL);
vrelease:
	video_unregister_device(&vip->video_dev);
	free_irq(pdev->irq, vip);
release_buf:
	sta2x11_vip_release_buffer(vip);
	pci_disable_msi(pdev);
unmap:
	vb2_queue_release(&vip->vb_vidq);
	pci_iounmap(pdev, vip->iomem);
release:
	pci_release_regions(pdev);
unreg:
	v4l2_device_unregister(&vip->v4l2_dev);
free_mem:
	kfree(vip);
release_gpios:
	vip_gpio_release(&pdev->dev, config->reset_pin, config->reset_name);
	vip_gpio_release(&pdev->dev, config->pwr_pin, config->pwr_name);
disable:
	/*
	 * do not call pci_disable_device on sta2x11 because it break all
	 * other Bus masters on this EP
	 */
	return ret;
}

/**
 * sta2x11_vip_remove_one - release device
 * @pdev: PCI device
 *
 * Undo everything done in .._init_one
 *
 * unregister video device
 * free interrupt
 * unmap ioadresses
 * free memory
 * free GPIO pins
 */
static void sta2x11_vip_remove_one(struct pci_dev *pdev)
{
	struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev);
	struct sta2x11_vip *vip =
	    container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev);

	sta2x11_vip_clear_register(vip);

	video_set_drvdata(&vip->video_dev, NULL);
	video_unregister_device(&vip->video_dev);
	free_irq(pdev->irq, vip);
	pci_disable_msi(pdev);
	vb2_queue_release(&vip->vb_vidq);
	pci_iounmap(pdev, vip->iomem);
	pci_release_regions(pdev);

	v4l2_device_unregister(&vip->v4l2_dev);

	vip_gpio_release(&pdev->dev, vip->config->pwr_pin,
			 vip->config->pwr_name);
	vip_gpio_release(&pdev->dev, vip->config->reset_pin,
			 vip->config->reset_name);

	kfree(vip);
	/*
	 * do not call pci_disable_device on sta2x11 because it break all
	 * other Bus masters on this EP
	 */
}

#ifdef CONFIG_PM

/**
 * sta2x11_vip_suspend - set device into power save mode
 * @pdev: PCI device
 * @state: new state of device
 *
 * all relevant registers are saved and an attempt to set a new state is made.
 *
 * return value: 0 always indicate success,
 * even if device could not be disabled. (workaround for hardware problem)
 */
static int sta2x11_vip_suspend(struct pci_dev *pdev, pm_message_t state)
{
	struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev);
	struct sta2x11_vip *vip =
	    container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev);
	unsigned long flags;
	int i;

	spin_lock_irqsave(&vip->slock, flags);
	vip->register_save_area[0] = reg_read(vip, DVP_CTL);
	reg_write(vip, DVP_CTL, vip->register_save_area[0] & DVP_CTL_DIS);
	vip->register_save_area[SAVE_COUNT] = reg_read(vip, DVP_ITM);
	reg_write(vip, DVP_ITM, 0);
	for (i = 1; i < SAVE_COUNT; i++)
		vip->register_save_area[i] = reg_read(vip, 4 * i);
	for (i = 0; i < AUX_COUNT; i++)
		vip->register_save_area[SAVE_COUNT + IRQ_COUNT + i] =
		    reg_read(vip, registers_to_save[i]);
	spin_unlock_irqrestore(&vip->slock, flags);
	/* save pci state */
	pci_save_state(pdev);
	if (pci_set_power_state(pdev, pci_choose_state(pdev, state))) {
		/*
		 * do not call pci_disable_device on sta2x11 because it
		 * break all other Bus masters on this EP
		 */
		vip->disabled = 1;
	}

	pr_info("VIP: suspend\n");
	return 0;
}

/**
 * sta2x11_vip_resume - resume device operation
 * @pdev : PCI device
 *
 * re-enable device, set PCI state to powered and restore registers.
 * resume normal device operation afterwards.
 *
 * return value: 0, no error.
 *
 * other, could not set device to power on state.
 */
static int sta2x11_vip_resume(struct pci_dev *pdev)
{
	struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev);
	struct sta2x11_vip *vip =
	    container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev);
	unsigned long flags;
	int ret, i;

	pr_info("VIP: resume\n");
	/* restore pci state */
	if (vip->disabled) {
		ret = pci_enable_device(pdev);
		if (ret) {
			pr_warn("VIP: Can't enable device.\n");
			return ret;
		}
		vip->disabled = 0;
	}
	ret = pci_set_power_state(pdev, PCI_D0);
	if (ret) {
		/*
		 * do not call pci_disable_device on sta2x11 because it
		 * break all other Bus masters on this EP
		 */
		pr_warn("VIP: Can't enable device.\n");
		vip->disabled = 1;
		return ret;
	}

	pci_restore_state(pdev);

	spin_lock_irqsave(&vip->slock, flags);
	for (i = 1; i < SAVE_COUNT; i++)
		reg_write(vip, 4 * i, vip->register_save_area[i]);
	for (i = 0; i < AUX_COUNT; i++)
		reg_write(vip, registers_to_save[i],
			  vip->register_save_area[SAVE_COUNT + IRQ_COUNT + i]);
	reg_write(vip, DVP_CTL, vip->register_save_area[0]);
	reg_write(vip, DVP_ITM, vip->register_save_area[SAVE_COUNT]);
	spin_unlock_irqrestore(&vip->slock, flags);
	return 0;
}

#endif

static const struct pci_device_id sta2x11_vip_pci_tbl[] = {
	{PCI_DEVICE(PCI_VENDOR_ID_STMICRO, PCI_DEVICE_ID_STMICRO_VIP)},
	{0,}
};

static struct pci_driver sta2x11_vip_driver = {
	.name = KBUILD_MODNAME,
	.probe = sta2x11_vip_init_one,
	.remove = sta2x11_vip_remove_one,
	.id_table = sta2x11_vip_pci_tbl,
#ifdef CONFIG_PM
	.suspend = sta2x11_vip_suspend,
	.resume = sta2x11_vip_resume,
#endif
};

static int __init sta2x11_vip_init_module(void)
{
	return pci_register_driver(&sta2x11_vip_driver);
}

static void __exit sta2x11_vip_exit_module(void)
{
	pci_unregister_driver(&sta2x11_vip_driver);
}

#ifdef MODULE
module_init(sta2x11_vip_init_module);
module_exit(sta2x11_vip_exit_module);
#else
late_initcall_sync(sta2x11_vip_init_module);
#endif

MODULE_DESCRIPTION("STA2X11 Video Input Port driver");
MODULE_AUTHOR("Wind River");
MODULE_LICENSE("GPL v2");
MODULE_SUPPORTED_DEVICE("sta2x11 video input");
MODULE_VERSION(DRV_VERSION);
MODULE_DEVICE_TABLE(pci, sta2x11_vip_pci_tbl);