summaryrefslogtreecommitdiff
path: root/drivers/media/i2c/st-vgxy61.c
blob: e4d37a19772406c72ac9536cecebbdf75fe9b024 (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
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
// SPDX-License-Identifier: GPL-2.0
/*
 * Driver for VGXY61 global shutter sensor family driver
 *
 * Copyright (C) 2022 STMicroelectronics SA
 */

#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/iopoll.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <linux/units.h>

#include <asm/unaligned.h>

#include <media/mipi-csi2.h>
#include <media/v4l2-async.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-event.h>
#include <media/v4l2-fwnode.h>
#include <media/v4l2-subdev.h>

#define VGXY61_REG_8BIT(n)				((1 << 16) | (n))
#define VGXY61_REG_16BIT(n)				((2 << 16) | (n))
#define VGXY61_REG_32BIT(n)				((4 << 16) | (n))
#define VGXY61_REG_SIZE_SHIFT				16
#define VGXY61_REG_ADDR_MASK				0xffff

#define VGXY61_REG_MODEL_ID				VGXY61_REG_16BIT(0x0000)
#define VG5661_MODEL_ID					0x5661
#define VG5761_MODEL_ID					0x5761
#define VGXY61_REG_REVISION				VGXY61_REG_16BIT(0x0002)
#define VGXY61_REG_FWPATCH_REVISION			VGXY61_REG_16BIT(0x0014)
#define VGXY61_REG_FWPATCH_START_ADDR			VGXY61_REG_8BIT(0x2000)
#define VGXY61_REG_SYSTEM_FSM				VGXY61_REG_8BIT(0x0020)
#define VGXY61_SYSTEM_FSM_SW_STBY			0x03
#define VGXY61_SYSTEM_FSM_STREAMING			0x04
#define VGXY61_REG_NVM					VGXY61_REG_8BIT(0x0023)
#define VGXY61_NVM_OK					0x04
#define VGXY61_REG_STBY					VGXY61_REG_8BIT(0x0201)
#define VGXY61_STBY_NO_REQ				0
#define VGXY61_STBY_REQ_TMP_READ			BIT(2)
#define VGXY61_REG_STREAMING				VGXY61_REG_8BIT(0x0202)
#define VGXY61_STREAMING_NO_REQ				0
#define VGXY61_STREAMING_REQ_STOP			BIT(0)
#define VGXY61_STREAMING_REQ_START			BIT(1)
#define VGXY61_REG_EXT_CLOCK				VGXY61_REG_32BIT(0x0220)
#define VGXY61_REG_CLK_PLL_PREDIV			VGXY61_REG_8BIT(0x0224)
#define VGXY61_REG_CLK_SYS_PLL_MULT			VGXY61_REG_8BIT(0x0225)
#define VGXY61_REG_GPIO_0_CTRL				VGXY61_REG_8BIT(0x0236)
#define VGXY61_REG_GPIO_1_CTRL				VGXY61_REG_8BIT(0x0237)
#define VGXY61_REG_GPIO_2_CTRL				VGXY61_REG_8BIT(0x0238)
#define VGXY61_REG_GPIO_3_CTRL				VGXY61_REG_8BIT(0x0239)
#define VGXY61_REG_SIGNALS_POLARITY_CTRL		VGXY61_REG_8BIT(0x023b)
#define VGXY61_REG_LINE_LENGTH				VGXY61_REG_16BIT(0x0300)
#define VGXY61_REG_ORIENTATION				VGXY61_REG_8BIT(0x0302)
#define VGXY61_REG_VT_CTRL				VGXY61_REG_8BIT(0x0304)
#define VGXY61_REG_FORMAT_CTRL				VGXY61_REG_8BIT(0x0305)
#define VGXY61_REG_OIF_CTRL				VGXY61_REG_16BIT(0x0306)
#define VGXY61_REG_OIF_ROI0_CTRL			VGXY61_REG_8BIT(0x030a)
#define VGXY61_REG_ROI0_START_H				VGXY61_REG_16BIT(0x0400)
#define VGXY61_REG_ROI0_START_V				VGXY61_REG_16BIT(0x0402)
#define VGXY61_REG_ROI0_END_H				VGXY61_REG_16BIT(0x0404)
#define VGXY61_REG_ROI0_END_V				VGXY61_REG_16BIT(0x0406)
#define VGXY61_REG_PATGEN_CTRL				VGXY61_REG_32BIT(0x0440)
#define VGXY61_PATGEN_LONG_ENABLE			BIT(16)
#define VGXY61_PATGEN_SHORT_ENABLE			BIT(0)
#define VGXY61_PATGEN_LONG_TYPE_SHIFT			18
#define VGXY61_PATGEN_SHORT_TYPE_SHIFT			4
#define VGXY61_REG_FRAME_CONTENT_CTRL			VGXY61_REG_8BIT(0x0478)
#define VGXY61_REG_COARSE_EXPOSURE_LONG			VGXY61_REG_16BIT(0x0500)
#define VGXY61_REG_COARSE_EXPOSURE_SHORT		VGXY61_REG_16BIT(0x0504)
#define VGXY61_REG_ANALOG_GAIN				VGXY61_REG_8BIT(0x0508)
#define VGXY61_REG_DIGITAL_GAIN_LONG			VGXY61_REG_16BIT(0x050a)
#define VGXY61_REG_DIGITAL_GAIN_SHORT			VGXY61_REG_16BIT(0x0512)
#define VGXY61_REG_FRAME_LENGTH				VGXY61_REG_16BIT(0x051a)
#define VGXY61_REG_SIGNALS_CTRL				VGXY61_REG_16BIT(0x0522)
#define VGXY61_SIGNALS_GPIO_ID_SHIFT			4
#define VGXY61_REG_READOUT_CTRL				VGXY61_REG_8BIT(0x0530)
#define VGXY61_REG_HDR_CTRL				VGXY61_REG_8BIT(0x0532)
#define VGXY61_REG_PATGEN_LONG_DATA_GR			VGXY61_REG_16BIT(0x092c)
#define VGXY61_REG_PATGEN_LONG_DATA_R			VGXY61_REG_16BIT(0x092e)
#define VGXY61_REG_PATGEN_LONG_DATA_B			VGXY61_REG_16BIT(0x0930)
#define VGXY61_REG_PATGEN_LONG_DATA_GB			VGXY61_REG_16BIT(0x0932)
#define VGXY61_REG_PATGEN_SHORT_DATA_GR			VGXY61_REG_16BIT(0x0950)
#define VGXY61_REG_PATGEN_SHORT_DATA_R			VGXY61_REG_16BIT(0x0952)
#define VGXY61_REG_PATGEN_SHORT_DATA_B			VGXY61_REG_16BIT(0x0954)
#define VGXY61_REG_PATGEN_SHORT_DATA_GB			VGXY61_REG_16BIT(0x0956)
#define VGXY61_REG_BYPASS_CTRL				VGXY61_REG_8BIT(0x0a60)

#define VGX661_WIDTH					1464
#define VGX661_HEIGHT					1104
#define VGX761_WIDTH					1944
#define VGX761_HEIGHT					1204
#define VGX661_DEFAULT_MODE				1
#define VGX761_DEFAULT_MODE				1
#define VGX661_SHORT_ROT_TERM				93
#define VGX761_SHORT_ROT_TERM				90
#define VGXY61_EXPOS_ROT_TERM				66
#define VGXY61_WRITE_MULTIPLE_CHUNK_MAX			16
#define VGXY61_NB_GPIOS					4
#define VGXY61_NB_POLARITIES				5
#define VGXY61_FRAME_LENGTH_DEF				1313
#define VGXY61_MIN_FRAME_LENGTH				1288
#define VGXY61_MIN_EXPOSURE				10
#define VGXY61_HDR_LINEAR_RATIO				10
#define VGXY61_TIMEOUT_MS				500
#define VGXY61_MEDIA_BUS_FMT_DEF			MEDIA_BUS_FMT_Y8_1X8

#define VGXY61_FWPATCH_REVISION_MAJOR			2
#define VGXY61_FWPATCH_REVISION_MINOR			0
#define VGXY61_FWPATCH_REVISION_MICRO			5

static const u8 patch_array[] = {
	0xbf, 0x00, 0x05, 0x20, 0x06, 0x01, 0xe0, 0xe0, 0x04, 0x80, 0xe6, 0x45,
	0xed, 0x6f, 0xfe, 0xff, 0x14, 0x80, 0x1f, 0x84, 0x10, 0x42, 0x05, 0x7c,
	0x01, 0xc4, 0x1e, 0x80, 0xb6, 0x42, 0x00, 0xe0, 0x1e, 0x82, 0x1e, 0xc0,
	0x93, 0xdd, 0xc3, 0xc1, 0x0c, 0x04, 0x00, 0xfa, 0x86, 0x0d, 0x70, 0xe1,
	0x04, 0x98, 0x15, 0x00, 0x28, 0xe0, 0x14, 0x02, 0x08, 0xfc, 0x15, 0x40,
	0x28, 0xe0, 0x98, 0x58, 0xe0, 0xef, 0x04, 0x98, 0x0e, 0x04, 0x00, 0xf0,
	0x15, 0x00, 0x28, 0xe0, 0x19, 0xc8, 0x15, 0x40, 0x28, 0xe0, 0xc6, 0x41,
	0xfc, 0xe0, 0x14, 0x80, 0x1f, 0x84, 0x14, 0x02, 0xa0, 0xfc, 0x1e, 0x80,
	0x14, 0x80, 0x14, 0x02, 0x80, 0xfb, 0x14, 0x02, 0xe0, 0xfc, 0x1e, 0x80,
	0x14, 0xc0, 0x1f, 0x84, 0x14, 0x02, 0xa4, 0xfc, 0x1e, 0xc0, 0x14, 0xc0,
	0x14, 0x02, 0x80, 0xfb, 0x14, 0x02, 0xe4, 0xfc, 0x1e, 0xc0, 0x0c, 0x0c,
	0x00, 0xf2, 0x93, 0xdd, 0x86, 0x00, 0xf8, 0xe0, 0x04, 0x80, 0xc6, 0x03,
	0x70, 0xe1, 0x0e, 0x84, 0x93, 0xdd, 0xc3, 0xc1, 0x0c, 0x04, 0x00, 0xfa,
	0x6b, 0x80, 0x06, 0x40, 0x6c, 0xe1, 0x04, 0x80, 0x09, 0x00, 0xe0, 0xe0,
	0x0b, 0xa1, 0x95, 0x84, 0x05, 0x0c, 0x1c, 0xe0, 0x86, 0x02, 0xf9, 0x60,
	0xe0, 0xcf, 0x78, 0x6e, 0x80, 0xef, 0x25, 0x0c, 0x18, 0xe0, 0x05, 0x4c,
	0x1c, 0xe0, 0x86, 0x02, 0xf9, 0x60, 0xe0, 0xcf, 0x0b, 0x84, 0xd8, 0x6d,
	0x80, 0xef, 0x05, 0x4c, 0x18, 0xe0, 0x04, 0xd8, 0x0b, 0xa5, 0x95, 0x84,
	0x05, 0x0c, 0x2c, 0xe0, 0x06, 0x02, 0x01, 0x60, 0xe0, 0xce, 0x18, 0x6d,
	0x80, 0xef, 0x25, 0x0c, 0x30, 0xe0, 0x05, 0x4c, 0x2c, 0xe0, 0x06, 0x02,
	0x01, 0x60, 0xe0, 0xce, 0x0b, 0x84, 0x78, 0x6c, 0x80, 0xef, 0x05, 0x4c,
	0x30, 0xe0, 0x0c, 0x0c, 0x00, 0xf2, 0x93, 0xdd, 0x46, 0x01, 0x70, 0xe1,
	0x08, 0x80, 0x0b, 0xa1, 0x08, 0x5c, 0x00, 0xda, 0x06, 0x01, 0x68, 0xe1,
	0x04, 0x80, 0x4a, 0x40, 0x84, 0xe0, 0x08, 0x5c, 0x00, 0x9a, 0x06, 0x01,
	0xe0, 0xe0, 0x04, 0x80, 0x15, 0x00, 0x60, 0xe0, 0x19, 0xc4, 0x15, 0x40,
	0x60, 0xe0, 0x15, 0x00, 0x78, 0xe0, 0x19, 0xc4, 0x15, 0x40, 0x78, 0xe0,
	0x93, 0xdd, 0xc3, 0xc1, 0x46, 0x01, 0x70, 0xe1, 0x08, 0x80, 0x0b, 0xa1,
	0x08, 0x5c, 0x00, 0xda, 0x06, 0x01, 0x68, 0xe1, 0x04, 0x80, 0x4a, 0x40,
	0x84, 0xe0, 0x08, 0x5c, 0x00, 0x9a, 0x06, 0x01, 0xe0, 0xe0, 0x14, 0x80,
	0x25, 0x02, 0x54, 0xe0, 0x29, 0xc4, 0x25, 0x42, 0x54, 0xe0, 0x24, 0x80,
	0x35, 0x04, 0x6c, 0xe0, 0x39, 0xc4, 0x35, 0x44, 0x6c, 0xe0, 0x25, 0x02,
	0x64, 0xe0, 0x29, 0xc4, 0x25, 0x42, 0x64, 0xe0, 0x04, 0x80, 0x15, 0x00,
	0x7c, 0xe0, 0x19, 0xc4, 0x15, 0x40, 0x7c, 0xe0, 0x93, 0xdd, 0xc3, 0xc1,
	0x4c, 0x04, 0x7c, 0xfa, 0x86, 0x40, 0x98, 0xe0, 0x14, 0x80, 0x1b, 0xa1,
	0x06, 0x00, 0x00, 0xc0, 0x08, 0x42, 0x38, 0xdc, 0x08, 0x64, 0xa0, 0xef,
	0x86, 0x42, 0x3c, 0xe0, 0x68, 0x49, 0x80, 0xef, 0x6b, 0x80, 0x78, 0x53,
	0xc8, 0xef, 0xc6, 0x54, 0x6c, 0xe1, 0x7b, 0x80, 0xb5, 0x14, 0x0c, 0xf8,
	0x05, 0x14, 0x14, 0xf8, 0x1a, 0xac, 0x8a, 0x80, 0x0b, 0x90, 0x38, 0x55,
	0x80, 0xef, 0x1a, 0xae, 0x17, 0xc2, 0x03, 0x82, 0x88, 0x65, 0x80, 0xef,
	0x1b, 0x80, 0x0b, 0x8e, 0x68, 0x65, 0x80, 0xef, 0x9b, 0x80, 0x0b, 0x8c,
	0x08, 0x65, 0x80, 0xef, 0x6b, 0x80, 0x0b, 0x92, 0x1b, 0x8c, 0x98, 0x64,
	0x80, 0xef, 0x1a, 0xec, 0x9b, 0x80, 0x0b, 0x90, 0x95, 0x54, 0x10, 0xe0,
	0xa8, 0x53, 0x80, 0xef, 0x1a, 0xee, 0x17, 0xc2, 0x03, 0x82, 0xf8, 0x63,
	0x80, 0xef, 0x1b, 0x80, 0x0b, 0x8e, 0xd8, 0x63, 0x80, 0xef, 0x1b, 0x8c,
	0x68, 0x63, 0x80, 0xef, 0x6b, 0x80, 0x0b, 0x92, 0x65, 0x54, 0x14, 0xe0,
	0x08, 0x65, 0x84, 0xef, 0x68, 0x63, 0x80, 0xef, 0x7b, 0x80, 0x0b, 0x8c,
	0xa8, 0x64, 0x84, 0xef, 0x08, 0x63, 0x80, 0xef, 0x14, 0xe8, 0x46, 0x44,
	0x94, 0xe1, 0x24, 0x88, 0x4a, 0x4e, 0x04, 0xe0, 0x14, 0xea, 0x1a, 0x04,
	0x08, 0xe0, 0x0a, 0x40, 0x84, 0xed, 0x0c, 0x04, 0x00, 0xe2, 0x4a, 0x40,
	0x04, 0xe0, 0x19, 0x16, 0xc0, 0xe0, 0x0a, 0x40, 0x84, 0xed, 0x21, 0x54,
	0x60, 0xe0, 0x0c, 0x04, 0x00, 0xe2, 0x1b, 0xa5, 0x0e, 0xea, 0x01, 0x89,
	0x21, 0x54, 0x64, 0xe0, 0x7e, 0xe8, 0x65, 0x82, 0x1b, 0xa7, 0x26, 0x00,
	0x00, 0x80, 0xa5, 0x82, 0x1b, 0xa9, 0x65, 0x82, 0x1b, 0xa3, 0x01, 0x85,
	0x16, 0x00, 0x00, 0xc0, 0x01, 0x54, 0x04, 0xf8, 0x06, 0xaa, 0x01, 0x83,
	0x06, 0xa8, 0x65, 0x81, 0x06, 0xa8, 0x01, 0x54, 0x04, 0xf8, 0x01, 0x83,
	0x06, 0xaa, 0x09, 0x14, 0x18, 0xf8, 0x0b, 0xa1, 0x05, 0x84, 0xc6, 0x42,
	0xd4, 0xe0, 0x14, 0x84, 0x01, 0x83, 0x01, 0x54, 0x60, 0xe0, 0x01, 0x54,
	0x64, 0xe0, 0x0b, 0x02, 0x90, 0xe0, 0x10, 0x02, 0x90, 0xe5, 0x01, 0x54,
	0x88, 0xe0, 0xb5, 0x81, 0xc6, 0x40, 0xd4, 0xe0, 0x14, 0x80, 0x0b, 0x02,
	0xe0, 0xe4, 0x10, 0x02, 0x31, 0x66, 0x02, 0xc0, 0x01, 0x54, 0x88, 0xe0,
	0x1a, 0x84, 0x29, 0x14, 0x10, 0xe0, 0x1c, 0xaa, 0x2b, 0xa1, 0xf5, 0x82,
	0x25, 0x14, 0x10, 0xf8, 0x2b, 0x04, 0xa8, 0xe0, 0x20, 0x44, 0x0d, 0x70,
	0x03, 0xc0, 0x2b, 0xa1, 0x04, 0x00, 0x80, 0x9a, 0x02, 0x40, 0x84, 0x90,
	0x03, 0x54, 0x04, 0x80, 0x4c, 0x0c, 0x7c, 0xf2, 0x93, 0xdd, 0x00, 0x00,
	0x02, 0xa9, 0x00, 0x00, 0x64, 0x4a, 0x40, 0x00, 0x08, 0x2d, 0x58, 0xe0,
	0xa8, 0x98, 0x40, 0x00, 0x28, 0x07, 0x34, 0xe0, 0x05, 0xb9, 0x00, 0x00,
	0x28, 0x00, 0x41, 0x05, 0x88, 0x00, 0x41, 0x3c, 0x98, 0x00, 0x41, 0x52,
	0x04, 0x01, 0x41, 0x79, 0x3c, 0x01, 0x41, 0x6a, 0x3d, 0xfe, 0x00, 0x00,
};

static const char * const vgxy61_test_pattern_menu[] = {
	"Disabled",
	"Solid",
	"Colorbar",
	"Gradbar",
	"Hgrey",
	"Vgrey",
	"Dgrey",
	"PN28",
};

static const char * const vgxy61_hdr_mode_menu[] = {
	"HDR linearize",
	"HDR substraction",
	"No HDR",
};

static const char * const vgxy61_supply_name[] = {
	"VCORE",
	"VDDIO",
	"VANA",
};

static const s64 link_freq[] = {
	/*
	 * MIPI output freq is 804Mhz / 2, as it uses both rising edge and
	 * falling edges to send data
	 */
	402000000ULL
};

enum vgxy61_bin_mode {
	VGXY61_BIN_MODE_NORMAL,
	VGXY61_BIN_MODE_DIGITAL_X2,
	VGXY61_BIN_MODE_DIGITAL_X4,
};

enum vgxy61_hdr_mode {
	VGXY61_HDR_LINEAR,
	VGXY61_HDR_SUB,
	VGXY61_NO_HDR,
};

enum vgxy61_strobe_mode {
	VGXY61_STROBE_DISABLED,
	VGXY61_STROBE_LONG,
	VGXY61_STROBE_ENABLED,
};

struct vgxy61_mode_info {
	u32 width;
	u32 height;
	enum vgxy61_bin_mode bin_mode;
	struct v4l2_rect crop;
};

struct vgxy61_fmt_desc {
	u32 code;
	u8 bpp;
	u8 data_type;
};

static const struct vgxy61_fmt_desc vgxy61_supported_codes[] = {
	{
		.code = MEDIA_BUS_FMT_Y8_1X8,
		.bpp = 8,
		.data_type = MIPI_CSI2_DT_RAW8,
	},
	{
		.code = MEDIA_BUS_FMT_Y10_1X10,
		.bpp = 10,
		.data_type = MIPI_CSI2_DT_RAW10,
	},
	{
		.code = MEDIA_BUS_FMT_Y12_1X12,
		.bpp = 12,
		.data_type = MIPI_CSI2_DT_RAW12,
	},
	{
		.code = MEDIA_BUS_FMT_Y14_1X14,
		.bpp = 14,
		.data_type = MIPI_CSI2_DT_RAW14,
	},
	{
		.code = MEDIA_BUS_FMT_Y16_1X16,
		.bpp = 16,
		.data_type = MIPI_CSI2_DT_RAW16,
	},
};

static const struct vgxy61_mode_info vgx661_mode_data[] = {
	{
		.width = VGX661_WIDTH,
		.height = VGX661_HEIGHT,
		.bin_mode = VGXY61_BIN_MODE_NORMAL,
		.crop = {
			.left = 0,
			.top = 0,
			.width = VGX661_WIDTH,
			.height = VGX661_HEIGHT,
		},
	},
	{
		.width = 1280,
		.height = 720,
		.bin_mode = VGXY61_BIN_MODE_NORMAL,
		.crop = {
			.left = 92,
			.top = 192,
			.width = 1280,
			.height = 720,
		},
	},
	{
		.width = 640,
		.height = 480,
		.bin_mode = VGXY61_BIN_MODE_DIGITAL_X2,
		.crop = {
			.left = 92,
			.top = 72,
			.width = 1280,
			.height = 960,
		},
	},
	{
		.width = 320,
		.height = 240,
		.bin_mode = VGXY61_BIN_MODE_DIGITAL_X4,
		.crop = {
			.left = 92,
			.top = 72,
			.width = 1280,
			.height = 960,
		},
	},
};

static const struct vgxy61_mode_info vgx761_mode_data[] = {
	{
		.width = VGX761_WIDTH,
		.height = VGX761_HEIGHT,
		.bin_mode = VGXY61_BIN_MODE_NORMAL,
		.crop = {
			.left = 0,
			.top = 0,
			.width = VGX761_WIDTH,
			.height = VGX761_HEIGHT,
		},
	},
	{
		.width = 1920,
		.height = 1080,
		.bin_mode = VGXY61_BIN_MODE_NORMAL,
		.crop = {
			.left = 12,
			.top = 62,
			.width = 1920,
			.height = 1080,
		},
	},
	{
		.width = 1280,
		.height = 720,
		.bin_mode = VGXY61_BIN_MODE_NORMAL,
		.crop = {
			.left = 332,
			.top = 242,
			.width = 1280,
			.height = 720,
		},
	},
	{
		.width = 640,
		.height = 480,
		.bin_mode = VGXY61_BIN_MODE_DIGITAL_X2,
		.crop = {
			.left = 332,
			.top = 122,
			.width = 1280,
			.height = 960,
		},
	},
	{
		.width = 320,
		.height = 240,
		.bin_mode = VGXY61_BIN_MODE_DIGITAL_X4,
		.crop = {
			.left = 332,
			.top = 122,
			.width = 1280,
			.height = 960,
		},
	},
};

struct vgxy61_dev {
	struct i2c_client *i2c_client;
	struct v4l2_subdev sd;
	struct media_pad pad;
	struct regulator_bulk_data supplies[ARRAY_SIZE(vgxy61_supply_name)];
	struct gpio_desc *reset_gpio;
	struct clk *xclk;
	u32 clk_freq;
	u16 id;
	u16 sensor_width;
	u16 sensor_height;
	u16 oif_ctrl;
	unsigned int nb_of_lane;
	u32 data_rate_in_mbps;
	u32 pclk;
	u16 line_length;
	u16 rot_term;
	bool gpios_polarity;
	/* Lock to protect all members below */
	struct mutex lock;
	struct v4l2_ctrl_handler ctrl_handler;
	struct v4l2_ctrl *pixel_rate_ctrl;
	struct v4l2_ctrl *expo_ctrl;
	struct v4l2_ctrl *vblank_ctrl;
	struct v4l2_ctrl *vflip_ctrl;
	struct v4l2_ctrl *hflip_ctrl;
	bool streaming;
	struct v4l2_mbus_framefmt fmt;
	const struct vgxy61_mode_info *sensor_modes;
	unsigned int sensor_modes_nb;
	const struct vgxy61_mode_info *default_mode;
	const struct vgxy61_mode_info *current_mode;
	bool hflip;
	bool vflip;
	enum vgxy61_hdr_mode hdr;
	u16 expo_long;
	u16 expo_short;
	u16 expo_max;
	u16 expo_min;
	u16 vblank;
	u16 vblank_min;
	u16 frame_length;
	u16 digital_gain;
	u8 analog_gain;
	enum vgxy61_strobe_mode strobe_mode;
	u32 pattern;
};

static u8 get_bpp_by_code(__u32 code)
{
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(vgxy61_supported_codes); i++) {
		if (vgxy61_supported_codes[i].code == code)
			return vgxy61_supported_codes[i].bpp;
	}
	/* Should never happen */
	WARN(1, "Unsupported code %d. default to 8 bpp", code);
	return 8;
}

static u8 get_data_type_by_code(__u32 code)
{
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(vgxy61_supported_codes); i++) {
		if (vgxy61_supported_codes[i].code == code)
			return vgxy61_supported_codes[i].data_type;
	}
	/* Should never happen */
	WARN(1, "Unsupported code %d. default to MIPI_CSI2_DT_RAW8 data type",
	     code);
	return MIPI_CSI2_DT_RAW8;
}

static void compute_pll_parameters_by_freq(u32 freq, u8 *prediv, u8 *mult)
{
	const unsigned int predivs[] = {1, 2, 4};
	unsigned int i;

	/*
	 * Freq range is [6Mhz-27Mhz] already checked.
	 * Output of divider should be in [6Mhz-12Mhz[.
	 */
	for (i = 0; i < ARRAY_SIZE(predivs); i++) {
		*prediv = predivs[i];
		if (freq / *prediv < 12 * HZ_PER_MHZ)
			break;
	}
	WARN_ON(i == ARRAY_SIZE(predivs));

	/*
	 * Target freq is 804Mhz. Don't change this as it will impact image
	 * quality.
	 */
	*mult = ((804 * HZ_PER_MHZ) * (*prediv) + freq / 2) / freq;
}

static s32 get_pixel_rate(struct vgxy61_dev *sensor)
{
	return div64_u64((u64)sensor->data_rate_in_mbps * sensor->nb_of_lane,
			 get_bpp_by_code(sensor->fmt.code));
}

static inline struct vgxy61_dev *to_vgxy61_dev(struct v4l2_subdev *sd)
{
	return container_of(sd, struct vgxy61_dev, sd);
}

static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
{
	return &container_of(ctrl->handler, struct vgxy61_dev,
			     ctrl_handler)->sd;
}

static unsigned int get_chunk_size(struct vgxy61_dev *sensor)
{
	struct i2c_adapter *adapter = sensor->i2c_client->adapter;
	int max_write_len = VGXY61_WRITE_MULTIPLE_CHUNK_MAX;

	if (adapter->quirks && adapter->quirks->max_write_len)
		max_write_len = adapter->quirks->max_write_len - 2;

	max_write_len = min(max_write_len, VGXY61_WRITE_MULTIPLE_CHUNK_MAX);

	return max(max_write_len, 1);
}

static int vgxy61_read_multiple(struct vgxy61_dev *sensor, u32 reg,
				unsigned int len)
{
	struct i2c_client *client = sensor->i2c_client;
	struct i2c_msg msg[2];
	u8 buf[2];
	u8 val[sizeof(u32)] = {0};
	int ret;

	if (len > sizeof(u32))
		return -EINVAL;
	buf[0] = reg >> 8;
	buf[1] = reg & 0xff;

	msg[0].addr = client->addr;
	msg[0].flags = client->flags;
	msg[0].buf = buf;
	msg[0].len = sizeof(buf);

	msg[1].addr = client->addr;
	msg[1].flags = client->flags | I2C_M_RD;
	msg[1].buf = val;
	msg[1].len = len;

	ret = i2c_transfer(client->adapter, msg, 2);
	if (ret < 0) {
		dev_dbg(&client->dev, "%s: %x i2c_transfer, reg: %x => %d\n",
			__func__, client->addr, reg, ret);
		return ret;
	}

	return get_unaligned_le32(val);
}

static inline int vgxy61_read_reg(struct vgxy61_dev *sensor, u32 reg)
{
	return vgxy61_read_multiple(sensor, reg & VGXY61_REG_ADDR_MASK,
				     (reg >> VGXY61_REG_SIZE_SHIFT) & 7);
}

static int vgxy61_write_multiple(struct vgxy61_dev *sensor, u32 reg,
				 const u8 *data, unsigned int len, int *err)
{
	struct i2c_client *client = sensor->i2c_client;
	struct i2c_msg msg;
	u8 buf[VGXY61_WRITE_MULTIPLE_CHUNK_MAX + 2];
	unsigned int i;
	int ret;

	if (err && *err)
		return *err;

	if (len > VGXY61_WRITE_MULTIPLE_CHUNK_MAX)
		return -EINVAL;
	buf[0] = reg >> 8;
	buf[1] = reg & 0xff;
	for (i = 0; i < len; i++)
		buf[i + 2] = data[i];

	msg.addr = client->addr;
	msg.flags = client->flags;
	msg.buf = buf;
	msg.len = len + 2;

	ret = i2c_transfer(client->adapter, &msg, 1);
	if (ret < 0) {
		dev_dbg(&client->dev, "%s: i2c_transfer, reg: %x => %d\n",
			__func__, reg, ret);
		if (err)
			*err = ret;
		return ret;
	}

	return 0;
}

static int vgxy61_write_array(struct vgxy61_dev *sensor, u32 reg,
			      unsigned int nb, const u8 *array)
{
	const unsigned int chunk_size = get_chunk_size(sensor);
	int ret;
	unsigned int sz;

	while (nb) {
		sz = min(nb, chunk_size);
		ret = vgxy61_write_multiple(sensor, reg, array, sz, NULL);
		if (ret < 0)
			return ret;
		nb -= sz;
		reg += sz;
		array += sz;
	}

	return 0;
}

static inline int vgxy61_write_reg(struct vgxy61_dev *sensor, u32 reg, u32 val,
				   int *err)
{
	return vgxy61_write_multiple(sensor, reg & VGXY61_REG_ADDR_MASK,
				     (u8 *)&val,
				     (reg >> VGXY61_REG_SIZE_SHIFT) & 7, err);
}

static int vgxy61_poll_reg(struct vgxy61_dev *sensor, u32 reg, u8 poll_val,
			   unsigned int timeout_ms)
{
	const unsigned int loop_delay_ms = 10;
	int ret;

	return read_poll_timeout(vgxy61_read_reg, ret,
				 ((ret < 0) || (ret == poll_val)),
				 loop_delay_ms * 1000, timeout_ms * 1000,
				 false, sensor, reg);
}

static int vgxy61_wait_state(struct vgxy61_dev *sensor, int state,
			     unsigned int timeout_ms)
{
	return vgxy61_poll_reg(sensor, VGXY61_REG_SYSTEM_FSM, state,
			       timeout_ms);
}

static int vgxy61_check_bw(struct vgxy61_dev *sensor)
{
	/*
	 * Simplification of time needed to send short packets and for the MIPI
	 * to add transition times (EoT, LPS, and SoT packet delimiters) needed
	 * by the protocol to go in low power between 2 packets of data. This
	 * is a mipi IP constant for the sensor.
	 */
	const unsigned int mipi_margin = 1056;
	unsigned int binning_scale = sensor->current_mode->crop.height /
				     sensor->current_mode->height;
	u8 bpp = get_bpp_by_code(sensor->fmt.code);
	unsigned int max_bit_per_line;
	unsigned int bit_per_line;
	u64 line_rate;

	line_rate = sensor->nb_of_lane * (u64)sensor->data_rate_in_mbps *
		    sensor->line_length;
	max_bit_per_line = div64_u64(line_rate, sensor->pclk) - mipi_margin;
	bit_per_line = (bpp * sensor->current_mode->width) / binning_scale;

	return bit_per_line > max_bit_per_line ? -EINVAL : 0;
}

static int vgxy61_apply_exposure(struct vgxy61_dev *sensor)
{
	int ret = 0;

	 /* We first set expo to zero to avoid forbidden parameters couple */
	vgxy61_write_reg(sensor, VGXY61_REG_COARSE_EXPOSURE_SHORT, 0, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_COARSE_EXPOSURE_LONG,
			 sensor->expo_long, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_COARSE_EXPOSURE_SHORT,
			 sensor->expo_short, &ret);

	return ret;
}

static int vgxy61_get_regulators(struct vgxy61_dev *sensor)
{
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(vgxy61_supply_name); i++)
		sensor->supplies[i].supply = vgxy61_supply_name[i];

	return devm_regulator_bulk_get(&sensor->i2c_client->dev,
				       ARRAY_SIZE(vgxy61_supply_name),
				       sensor->supplies);
}

static int vgxy61_apply_reset(struct vgxy61_dev *sensor)
{
	gpiod_set_value_cansleep(sensor->reset_gpio, 0);
	usleep_range(5000, 10000);
	gpiod_set_value_cansleep(sensor->reset_gpio, 1);
	usleep_range(5000, 10000);
	gpiod_set_value_cansleep(sensor->reset_gpio, 0);
	usleep_range(40000, 100000);
	return vgxy61_wait_state(sensor, VGXY61_SYSTEM_FSM_SW_STBY,
				 VGXY61_TIMEOUT_MS);
}

static void vgxy61_fill_framefmt(struct vgxy61_dev *sensor,
				 const struct vgxy61_mode_info *mode,
				 struct v4l2_mbus_framefmt *fmt, u32 code)
{
	fmt->code = code;
	fmt->width = mode->width;
	fmt->height = mode->height;
	fmt->colorspace = V4L2_COLORSPACE_RAW;
	fmt->field = V4L2_FIELD_NONE;
	fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
	fmt->quantization = V4L2_QUANTIZATION_DEFAULT;
	fmt->xfer_func = V4L2_XFER_FUNC_DEFAULT;
}

static int vgxy61_try_fmt_internal(struct v4l2_subdev *sd,
				   struct v4l2_mbus_framefmt *fmt,
				   const struct vgxy61_mode_info **new_mode)
{
	struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
	const struct vgxy61_mode_info *mode = sensor->sensor_modes;
	unsigned int index;

	for (index = 0; index < ARRAY_SIZE(vgxy61_supported_codes); index++) {
		if (vgxy61_supported_codes[index].code == fmt->code)
			break;
	}
	if (index == ARRAY_SIZE(vgxy61_supported_codes))
		index = 0;

	mode = v4l2_find_nearest_size(sensor->sensor_modes,
				      sensor->sensor_modes_nb, width, height,
				      fmt->width, fmt->height);
	if (new_mode)
		*new_mode = mode;

	vgxy61_fill_framefmt(sensor, mode, fmt,
			     vgxy61_supported_codes[index].code);

	return 0;
}

static int vgxy61_get_selection(struct v4l2_subdev *sd,
				struct v4l2_subdev_state *sd_state,
				struct v4l2_subdev_selection *sel)
{
	struct vgxy61_dev *sensor = to_vgxy61_dev(sd);

	switch (sel->target) {
	case V4L2_SEL_TGT_CROP:
		sel->r = sensor->current_mode->crop;
		return 0;
	case V4L2_SEL_TGT_NATIVE_SIZE:
	case V4L2_SEL_TGT_CROP_DEFAULT:
	case V4L2_SEL_TGT_CROP_BOUNDS:
		sel->r.top = 0;
		sel->r.left = 0;
		sel->r.width = sensor->sensor_width;
		sel->r.height = sensor->sensor_height;
		return 0;
	}

	return -EINVAL;
}

static int vgxy61_enum_mbus_code(struct v4l2_subdev *sd,
				 struct v4l2_subdev_state *sd_state,
				 struct v4l2_subdev_mbus_code_enum *code)
{
	if (code->index >= ARRAY_SIZE(vgxy61_supported_codes))
		return -EINVAL;

	code->code = vgxy61_supported_codes[code->index].code;

	return 0;
}

static int vgxy61_get_fmt(struct v4l2_subdev *sd,
			  struct v4l2_subdev_state *sd_state,
			  struct v4l2_subdev_format *format)
{
	struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
	struct v4l2_mbus_framefmt *fmt;

	mutex_lock(&sensor->lock);

	if (format->which == V4L2_SUBDEV_FORMAT_TRY)
		fmt = v4l2_subdev_state_get_format(sd_state, format->pad);
	else
		fmt = &sensor->fmt;

	format->format = *fmt;

	mutex_unlock(&sensor->lock);

	return 0;
}

static u16 vgxy61_get_vblank_min(struct vgxy61_dev *sensor,
				 enum vgxy61_hdr_mode hdr)
{
	u16 min_vblank =  VGXY61_MIN_FRAME_LENGTH -
			  sensor->current_mode->crop.height;
	/* Ensure the first rule of thumb can't be negative */
	u16 min_vblank_hdr =  VGXY61_MIN_EXPOSURE + sensor->rot_term + 1;

	if (hdr != VGXY61_NO_HDR)
		return max(min_vblank, min_vblank_hdr);
	return min_vblank;
}

static int vgxy61_enum_frame_size(struct v4l2_subdev *sd,
				  struct v4l2_subdev_state *sd_state,
				  struct v4l2_subdev_frame_size_enum *fse)
{
	struct vgxy61_dev *sensor = to_vgxy61_dev(sd);

	if (fse->index >= sensor->sensor_modes_nb)
		return -EINVAL;

	fse->min_width = sensor->sensor_modes[fse->index].width;
	fse->max_width = fse->min_width;
	fse->min_height = sensor->sensor_modes[fse->index].height;
	fse->max_height = fse->min_height;

	return 0;
}

static int vgxy61_update_analog_gain(struct vgxy61_dev *sensor, u32 target)
{
	sensor->analog_gain = target;

	if (sensor->streaming)
		return vgxy61_write_reg(sensor, VGXY61_REG_ANALOG_GAIN, target,
					NULL);
	return 0;
}

static int vgxy61_apply_digital_gain(struct vgxy61_dev *sensor,
				     u32 digital_gain)
{
	int ret = 0;

	/*
	 * For a monochrome version, configuring DIGITAL_GAIN_LONG_CH0 and
	 * DIGITAL_GAIN_SHORT_CH0 is enough to configure the gain of all
	 * four sub pixels.
	 */
	vgxy61_write_reg(sensor, VGXY61_REG_DIGITAL_GAIN_LONG, digital_gain,
			 &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_DIGITAL_GAIN_SHORT, digital_gain,
			 &ret);

	return ret;
}

static int vgxy61_update_digital_gain(struct vgxy61_dev *sensor, u32 target)
{
	sensor->digital_gain = target;

	if (sensor->streaming)
		return vgxy61_apply_digital_gain(sensor, sensor->digital_gain);
	return 0;
}

static int vgxy61_apply_patgen(struct vgxy61_dev *sensor, u32 index)
{
	static const u8 index2val[] = {
		0x0, 0x1, 0x2, 0x3, 0x10, 0x11, 0x12, 0x13
	};
	u32 pattern = index2val[index];
	u32 reg = (pattern << VGXY61_PATGEN_LONG_TYPE_SHIFT) |
	      (pattern << VGXY61_PATGEN_SHORT_TYPE_SHIFT);

	if (pattern)
		reg |= VGXY61_PATGEN_LONG_ENABLE | VGXY61_PATGEN_SHORT_ENABLE;
	return vgxy61_write_reg(sensor, VGXY61_REG_PATGEN_CTRL, reg, NULL);
}

static int vgxy61_update_patgen(struct vgxy61_dev *sensor, u32 pattern)
{
	sensor->pattern = pattern;

	if (sensor->streaming)
		return vgxy61_apply_patgen(sensor, sensor->pattern);
	return 0;
}

static int vgxy61_apply_gpiox_strobe_mode(struct vgxy61_dev *sensor,
					  enum vgxy61_strobe_mode mode,
					  unsigned int idx)
{
	static const u8 index2val[] = {0x0, 0x1, 0x3};
	int reg;

	reg = vgxy61_read_reg(sensor, VGXY61_REG_SIGNALS_CTRL);
	if (reg < 0)
		return reg;
	reg &= ~(0xf << (idx * VGXY61_SIGNALS_GPIO_ID_SHIFT));
	reg |= index2val[mode] << (idx * VGXY61_SIGNALS_GPIO_ID_SHIFT);

	return vgxy61_write_reg(sensor, VGXY61_REG_SIGNALS_CTRL, reg, NULL);
}

static int vgxy61_update_gpios_strobe_mode(struct vgxy61_dev *sensor,
					   enum vgxy61_hdr_mode hdr)
{
	unsigned int i;
	int ret;

	switch (hdr) {
	case VGXY61_HDR_LINEAR:
		sensor->strobe_mode = VGXY61_STROBE_ENABLED;
		break;
	case VGXY61_HDR_SUB:
	case VGXY61_NO_HDR:
		sensor->strobe_mode = VGXY61_STROBE_LONG;
		break;
	default:
		/* Should never happen */
		WARN_ON(true);
		break;
	}

	if (!sensor->streaming)
		return 0;

	for (i = 0; i < VGXY61_NB_GPIOS; i++) {
		ret = vgxy61_apply_gpiox_strobe_mode(sensor,
						     sensor->strobe_mode,
						     i);
		if (ret)
			return ret;
	}

	return 0;
}

static int vgxy61_update_gpios_strobe_polarity(struct vgxy61_dev *sensor,
					       bool polarity)
{
	int ret = 0;

	if (sensor->streaming)
		return -EBUSY;

	vgxy61_write_reg(sensor, VGXY61_REG_GPIO_0_CTRL, polarity << 1, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_GPIO_1_CTRL, polarity << 1, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_GPIO_2_CTRL, polarity << 1, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_GPIO_3_CTRL, polarity << 1, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_SIGNALS_POLARITY_CTRL, polarity,
			 &ret);

	return ret;
}

static u32 vgxy61_get_expo_long_max(struct vgxy61_dev *sensor,
				    unsigned int short_expo_ratio)
{
	u32 first_rot_max_expo, second_rot_max_expo, third_rot_max_expo;

	/* Apply sensor's rules of thumb */
	/*
	 * Short exposure + height must be less than frame length to avoid bad
	 * pixel line at the botom of the image
	 */
	first_rot_max_expo =
		((sensor->frame_length - sensor->current_mode->crop.height -
		sensor->rot_term) * short_expo_ratio) - 1;

	/*
	 * Total exposition time must be less than frame length to avoid sensor
	 * crash
	 */
	second_rot_max_expo =
		(((sensor->frame_length - VGXY61_EXPOS_ROT_TERM) *
		short_expo_ratio) / (short_expo_ratio + 1)) - 1;

	/*
	 * Short exposure times 71 must be less than frame length to avoid
	 * sensor crash
	 */
	third_rot_max_expo = (sensor->frame_length / 71) * short_expo_ratio;

	/* Take the minimum from all rules */
	return min(min(first_rot_max_expo, second_rot_max_expo),
		   third_rot_max_expo);
}

static int vgxy61_update_exposure(struct vgxy61_dev *sensor, u16 new_expo_long,
				  enum vgxy61_hdr_mode hdr)
{
	struct i2c_client *client = sensor->i2c_client;
	u16 new_expo_short = 0;
	u16 expo_short_max = 0;
	u16 expo_long_min = VGXY61_MIN_EXPOSURE;
	u16 expo_long_max = 0;

	/* Compute short exposure according to hdr mode and long exposure */
	switch (hdr) {
	case VGXY61_HDR_LINEAR:
		/*
		 * Take ratio into account for minimal exposures in
		 * VGXY61_HDR_LINEAR
		 */
		expo_long_min = VGXY61_MIN_EXPOSURE * VGXY61_HDR_LINEAR_RATIO;
		new_expo_long = max(expo_long_min, new_expo_long);

		expo_long_max =
			vgxy61_get_expo_long_max(sensor,
						 VGXY61_HDR_LINEAR_RATIO);
		expo_short_max = (expo_long_max +
				 (VGXY61_HDR_LINEAR_RATIO / 2)) /
				 VGXY61_HDR_LINEAR_RATIO;
		new_expo_short = (new_expo_long +
				 (VGXY61_HDR_LINEAR_RATIO / 2)) /
				 VGXY61_HDR_LINEAR_RATIO;
		break;
	case VGXY61_HDR_SUB:
		new_expo_long = max(expo_long_min, new_expo_long);

		expo_long_max = vgxy61_get_expo_long_max(sensor, 1);
		/* Short and long are the same in VGXY61_HDR_SUB */
		expo_short_max = expo_long_max;
		new_expo_short = new_expo_long;
		break;
	case VGXY61_NO_HDR:
		new_expo_long = max(expo_long_min, new_expo_long);

		/*
		 * As short expo is 0 here, only the second rule of thumb
		 * applies, see vgxy61_get_expo_long_max for more
		 */
		expo_long_max = sensor->frame_length - VGXY61_EXPOS_ROT_TERM;
		break;
	default:
		/* Should never happen */
		WARN_ON(true);
		break;
	}

	/* If this happens, something is wrong with formulas */
	WARN_ON(expo_long_min > expo_long_max);

	if (new_expo_long > expo_long_max) {
		dev_warn(&client->dev, "Exposure %d too high, clamping to %d\n",
			 new_expo_long, expo_long_max);
		new_expo_long = expo_long_max;
		new_expo_short = expo_short_max;
	}

	sensor->expo_long = new_expo_long;
	sensor->expo_short = new_expo_short;
	sensor->expo_max = expo_long_max;
	sensor->expo_min = expo_long_min;

	if (sensor->streaming)
		return vgxy61_apply_exposure(sensor);
	return 0;
}

static int vgxy61_apply_framelength(struct vgxy61_dev *sensor)
{
	return vgxy61_write_reg(sensor, VGXY61_REG_FRAME_LENGTH,
				sensor->frame_length, NULL);
}

static int vgxy61_update_vblank(struct vgxy61_dev *sensor, u16 vblank,
				enum vgxy61_hdr_mode hdr)
{
	int ret;

	sensor->vblank_min = vgxy61_get_vblank_min(sensor, hdr);
	sensor->vblank = max(sensor->vblank_min, vblank);
	sensor->frame_length = sensor->current_mode->crop.height +
			       sensor->vblank;

	/* Update exposure according to vblank */
	ret = vgxy61_update_exposure(sensor, sensor->expo_long, hdr);
	if (ret)
		return ret;

	if (sensor->streaming)
		return vgxy61_apply_framelength(sensor);
	return 0;
}

static int vgxy61_apply_hdr(struct vgxy61_dev *sensor,
			    enum vgxy61_hdr_mode index)
{
	static const u8 index2val[] = {0x1, 0x4, 0xa};

	return vgxy61_write_reg(sensor, VGXY61_REG_HDR_CTRL, index2val[index],
				NULL);
}

static int vgxy61_update_hdr(struct vgxy61_dev *sensor,
			     enum vgxy61_hdr_mode index)
{
	int ret;

	/*
	 * vblank and short exposure change according to HDR mode, do it first
	 * as it can violate sensors 'rule of thumbs' and therefore will require
	 * to change the long exposure.
	 */
	ret = vgxy61_update_vblank(sensor, sensor->vblank, index);
	if (ret)
		return ret;

	/* Update strobe mode according to HDR */
	ret = vgxy61_update_gpios_strobe_mode(sensor, index);
	if (ret)
		return ret;

	sensor->hdr = index;

	if (sensor->streaming)
		return vgxy61_apply_hdr(sensor, sensor->hdr);
	return 0;
}

static int vgxy61_apply_settings(struct vgxy61_dev *sensor)
{
	int ret;
	unsigned int i;

	ret = vgxy61_apply_hdr(sensor, sensor->hdr);
	if (ret)
		return ret;

	ret = vgxy61_apply_framelength(sensor);
	if (ret)
		return ret;

	ret = vgxy61_apply_exposure(sensor);
	if (ret)
		return ret;

	ret = vgxy61_write_reg(sensor, VGXY61_REG_ANALOG_GAIN,
			       sensor->analog_gain, NULL);
	if (ret)
		return ret;
	ret = vgxy61_apply_digital_gain(sensor, sensor->digital_gain);
	if (ret)
		return ret;

	ret = vgxy61_write_reg(sensor, VGXY61_REG_ORIENTATION,
			       sensor->hflip | (sensor->vflip << 1), NULL);
	if (ret)
		return ret;

	ret = vgxy61_apply_patgen(sensor, sensor->pattern);
	if (ret)
		return ret;

	for (i = 0; i < VGXY61_NB_GPIOS; i++) {
		ret = vgxy61_apply_gpiox_strobe_mode(sensor,
						     sensor->strobe_mode, i);
		if (ret)
			return ret;
	}

	return 0;
}

static int vgxy61_stream_enable(struct vgxy61_dev *sensor)
{
	struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd);
	const struct v4l2_rect *crop = &sensor->current_mode->crop;
	int ret = 0;

	ret = vgxy61_check_bw(sensor);
	if (ret)
		return ret;

	ret = pm_runtime_resume_and_get(&client->dev);
	if (ret)
		return ret;

	vgxy61_write_reg(sensor, VGXY61_REG_FORMAT_CTRL,
			 get_bpp_by_code(sensor->fmt.code), &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_OIF_ROI0_CTRL,
			 get_data_type_by_code(sensor->fmt.code), &ret);

	vgxy61_write_reg(sensor, VGXY61_REG_READOUT_CTRL,
			 sensor->current_mode->bin_mode, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_ROI0_START_H, crop->left, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_ROI0_END_H,
			 crop->left + crop->width - 1, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_ROI0_START_V, crop->top, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_ROI0_END_V,
			 crop->top + crop->height - 1, &ret);
	if (ret)
		goto err_rpm_put;

	ret = vgxy61_apply_settings(sensor);
	if (ret)
		goto err_rpm_put;

	ret = vgxy61_write_reg(sensor, VGXY61_REG_STREAMING,
			       VGXY61_STREAMING_REQ_START, NULL);
	if (ret)
		goto err_rpm_put;

	ret = vgxy61_poll_reg(sensor, VGXY61_REG_STREAMING,
			      VGXY61_STREAMING_NO_REQ, VGXY61_TIMEOUT_MS);
	if (ret)
		goto err_rpm_put;

	ret = vgxy61_wait_state(sensor, VGXY61_SYSTEM_FSM_STREAMING,
				VGXY61_TIMEOUT_MS);
	if (ret)
		goto err_rpm_put;

	/* vflip and hflip cannot change during streaming */
	__v4l2_ctrl_grab(sensor->vflip_ctrl, true);
	__v4l2_ctrl_grab(sensor->hflip_ctrl, true);

	return 0;

err_rpm_put:
	pm_runtime_put(&client->dev);
	return ret;
}

static int vgxy61_stream_disable(struct vgxy61_dev *sensor)
{
	struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd);
	int ret;

	ret = vgxy61_write_reg(sensor, VGXY61_REG_STREAMING,
			       VGXY61_STREAMING_REQ_STOP, NULL);
	if (ret)
		goto err_str_dis;

	ret = vgxy61_poll_reg(sensor, VGXY61_REG_STREAMING,
			      VGXY61_STREAMING_NO_REQ, 2000);
	if (ret)
		goto err_str_dis;

	ret = vgxy61_wait_state(sensor, VGXY61_SYSTEM_FSM_SW_STBY,
				VGXY61_TIMEOUT_MS);
	if (ret)
		goto err_str_dis;

	__v4l2_ctrl_grab(sensor->vflip_ctrl, false);
	__v4l2_ctrl_grab(sensor->hflip_ctrl, false);

err_str_dis:
	if (ret)
		WARN(1, "Can't disable stream");
	pm_runtime_put(&client->dev);

	return ret;
}

static int vgxy61_s_stream(struct v4l2_subdev *sd, int enable)
{
	struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
	int ret = 0;

	mutex_lock(&sensor->lock);

	ret = enable ? vgxy61_stream_enable(sensor) :
	      vgxy61_stream_disable(sensor);
	if (!ret)
		sensor->streaming = enable;

	mutex_unlock(&sensor->lock);

	return ret;
}

static int vgxy61_set_fmt(struct v4l2_subdev *sd,
			  struct v4l2_subdev_state *sd_state,
			  struct v4l2_subdev_format *format)
{
	struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
	const struct vgxy61_mode_info *new_mode;
	struct v4l2_mbus_framefmt *fmt;
	int ret;

	mutex_lock(&sensor->lock);

	if (sensor->streaming) {
		ret = -EBUSY;
		goto out;
	}

	ret = vgxy61_try_fmt_internal(sd, &format->format, &new_mode);
	if (ret)
		goto out;

	if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
		fmt = v4l2_subdev_state_get_format(sd_state, 0);
		*fmt = format->format;
	} else if (sensor->current_mode != new_mode ||
		   sensor->fmt.code != format->format.code) {
		fmt = &sensor->fmt;
		*fmt = format->format;

		sensor->current_mode = new_mode;

		/* Reset vblank and framelength to default */
		ret = vgxy61_update_vblank(sensor,
					   VGXY61_FRAME_LENGTH_DEF -
					   new_mode->crop.height,
					   sensor->hdr);

		/* Update controls to reflect new mode */
		__v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_ctrl,
					 get_pixel_rate(sensor));
		__v4l2_ctrl_modify_range(sensor->vblank_ctrl,
					 sensor->vblank_min,
					 0xffff - new_mode->crop.height,
					 1, sensor->vblank);
		__v4l2_ctrl_s_ctrl(sensor->vblank_ctrl, sensor->vblank);
		__v4l2_ctrl_modify_range(sensor->expo_ctrl, sensor->expo_min,
					 sensor->expo_max, 1,
					 sensor->expo_long);
	}

out:
	mutex_unlock(&sensor->lock);

	return ret;
}

static int vgxy61_init_state(struct v4l2_subdev *sd,
			     struct v4l2_subdev_state *sd_state)
{
	struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
	struct v4l2_subdev_format fmt = { 0 };

	vgxy61_fill_framefmt(sensor, sensor->current_mode, &fmt.format,
			     VGXY61_MEDIA_BUS_FMT_DEF);

	return vgxy61_set_fmt(sd, sd_state, &fmt);
}

static int vgxy61_s_ctrl(struct v4l2_ctrl *ctrl)
{
	struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
	struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
	const struct vgxy61_mode_info *cur_mode = sensor->current_mode;
	int ret;

	switch (ctrl->id) {
	case V4L2_CID_EXPOSURE:
		ret = vgxy61_update_exposure(sensor, ctrl->val, sensor->hdr);
		ctrl->val = sensor->expo_long;
		break;
	case V4L2_CID_ANALOGUE_GAIN:
		ret = vgxy61_update_analog_gain(sensor, ctrl->val);
		break;
	case V4L2_CID_DIGITAL_GAIN:
		ret = vgxy61_update_digital_gain(sensor, ctrl->val);
		break;
	case V4L2_CID_VFLIP:
	case V4L2_CID_HFLIP:
		if (sensor->streaming) {
			ret = -EBUSY;
			break;
		}
		if (ctrl->id == V4L2_CID_VFLIP)
			sensor->vflip = ctrl->val;
		if (ctrl->id == V4L2_CID_HFLIP)
			sensor->hflip = ctrl->val;
		ret = 0;
		break;
	case V4L2_CID_TEST_PATTERN:
		ret = vgxy61_update_patgen(sensor, ctrl->val);
		break;
	case V4L2_CID_HDR_SENSOR_MODE:
		ret = vgxy61_update_hdr(sensor, ctrl->val);
		/* Update vblank and exposure controls to match new hdr */
		__v4l2_ctrl_modify_range(sensor->vblank_ctrl,
					 sensor->vblank_min,
					 0xffff - cur_mode->crop.height,
					 1, sensor->vblank);
		__v4l2_ctrl_modify_range(sensor->expo_ctrl, sensor->expo_min,
					 sensor->expo_max, 1,
					 sensor->expo_long);
		break;
	case V4L2_CID_VBLANK:
		ret = vgxy61_update_vblank(sensor, ctrl->val, sensor->hdr);
		/* Update exposure control to match new vblank */
		__v4l2_ctrl_modify_range(sensor->expo_ctrl, sensor->expo_min,
					 sensor->expo_max, 1,
					 sensor->expo_long);
		break;
	default:
		ret = -EINVAL;
		break;
	}

	return ret;
}

static const struct v4l2_ctrl_ops vgxy61_ctrl_ops = {
	.s_ctrl = vgxy61_s_ctrl,
};

static int vgxy61_init_controls(struct vgxy61_dev *sensor)
{
	const struct v4l2_ctrl_ops *ops = &vgxy61_ctrl_ops;
	struct v4l2_ctrl_handler *hdl = &sensor->ctrl_handler;
	const struct vgxy61_mode_info *cur_mode = sensor->current_mode;
	struct v4l2_fwnode_device_properties props;
	struct v4l2_ctrl *ctrl;
	int ret;

	v4l2_ctrl_handler_init(hdl, 16);
	/* We can use our own mutex for the ctrl lock */
	hdl->lock = &sensor->lock;
	v4l2_ctrl_new_std(hdl, ops, V4L2_CID_ANALOGUE_GAIN, 0, 0x1c, 1,
			  sensor->analog_gain);
	v4l2_ctrl_new_std(hdl, ops, V4L2_CID_DIGITAL_GAIN, 0, 0xfff, 1,
			  sensor->digital_gain);
	v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN,
				     ARRAY_SIZE(vgxy61_test_pattern_menu) - 1,
				     0, 0, vgxy61_test_pattern_menu);
	ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HBLANK, 0,
				 sensor->line_length, 1,
				 sensor->line_length - cur_mode->width);
	if (ctrl)
		ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
	ctrl = v4l2_ctrl_new_int_menu(hdl, ops, V4L2_CID_LINK_FREQ,
				      ARRAY_SIZE(link_freq) - 1, 0, link_freq);
	if (ctrl)
		ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
	v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_HDR_SENSOR_MODE,
				     ARRAY_SIZE(vgxy61_hdr_mode_menu) - 1, 0,
				     VGXY61_NO_HDR, vgxy61_hdr_mode_menu);

	/*
	 * Keep a pointer to these controls as we need to update them when
	 * setting the format
	 */
	sensor->pixel_rate_ctrl = v4l2_ctrl_new_std(hdl, ops,
						    V4L2_CID_PIXEL_RATE, 1,
						    INT_MAX, 1,
						    get_pixel_rate(sensor));
	if (sensor->pixel_rate_ctrl)
		sensor->pixel_rate_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
	sensor->expo_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE,
					      sensor->expo_min,
					      sensor->expo_max, 1,
					      sensor->expo_long);
	sensor->vblank_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VBLANK,
						sensor->vblank_min,
						0xffff - cur_mode->crop.height,
						1, sensor->vblank);
	sensor->vflip_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP,
					       0, 1, 1, sensor->vflip);
	sensor->hflip_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP,
					       0, 1, 1, sensor->hflip);

	if (hdl->error) {
		ret = hdl->error;
		goto free_ctrls;
	}

	ret = v4l2_fwnode_device_parse(&sensor->i2c_client->dev, &props);
	if (ret)
		goto free_ctrls;

	ret = v4l2_ctrl_new_fwnode_properties(hdl, ops, &props);
	if (ret)
		goto free_ctrls;

	sensor->sd.ctrl_handler = hdl;
	return 0;

free_ctrls:
	v4l2_ctrl_handler_free(hdl);
	return ret;
}

static const struct v4l2_subdev_core_ops vgxy61_core_ops = {
	.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
	.unsubscribe_event = v4l2_event_subdev_unsubscribe,
};

static const struct v4l2_subdev_video_ops vgxy61_video_ops = {
	.s_stream = vgxy61_s_stream,
};

static const struct v4l2_subdev_pad_ops vgxy61_pad_ops = {
	.enum_mbus_code = vgxy61_enum_mbus_code,
	.get_fmt = vgxy61_get_fmt,
	.set_fmt = vgxy61_set_fmt,
	.get_selection = vgxy61_get_selection,
	.enum_frame_size = vgxy61_enum_frame_size,
};

static const struct v4l2_subdev_ops vgxy61_subdev_ops = {
	.core = &vgxy61_core_ops,
	.video = &vgxy61_video_ops,
	.pad = &vgxy61_pad_ops,
};

static const struct v4l2_subdev_internal_ops vgxy61_internal_ops = {
	.init_state = vgxy61_init_state,
};

static const struct media_entity_operations vgxy61_subdev_entity_ops = {
	.link_validate = v4l2_subdev_link_validate,
};

static int vgxy61_tx_from_ep(struct vgxy61_dev *sensor,
			     struct fwnode_handle *handle)
{
	struct v4l2_fwnode_endpoint ep = { .bus_type = V4L2_MBUS_CSI2_DPHY };
	struct i2c_client *client = sensor->i2c_client;
	u32 log2phy[VGXY61_NB_POLARITIES] = {~0, ~0, ~0, ~0, ~0};
	u32 phy2log[VGXY61_NB_POLARITIES] = {~0, ~0, ~0, ~0, ~0};
	int polarities[VGXY61_NB_POLARITIES] = {0, 0, 0, 0, 0};
	int l_nb;
	unsigned int p, l, i;
	int ret;

	ret = v4l2_fwnode_endpoint_alloc_parse(handle, &ep);
	if (ret)
		return -EINVAL;

	l_nb = ep.bus.mipi_csi2.num_data_lanes;
	if (l_nb != 1 && l_nb != 2 && l_nb != 4) {
		dev_err(&client->dev, "invalid data lane number %d\n", l_nb);
		goto error_ep;
	}

	/* Build log2phy, phy2log and polarities from ep info */
	log2phy[0] = ep.bus.mipi_csi2.clock_lane;
	phy2log[log2phy[0]] = 0;
	for (l = 1; l < l_nb + 1; l++) {
		log2phy[l] = ep.bus.mipi_csi2.data_lanes[l - 1];
		phy2log[log2phy[l]] = l;
	}
	/*
	 * Then fill remaining slots for every physical slot to have something
	 * valid for hardware stuff.
	 */
	for (p = 0; p < VGXY61_NB_POLARITIES; p++) {
		if (phy2log[p] != ~0)
			continue;
		phy2log[p] = l;
		log2phy[l] = p;
		l++;
	}
	for (l = 0; l < l_nb + 1; l++)
		polarities[l] = ep.bus.mipi_csi2.lane_polarities[l];

	if (log2phy[0] != 0) {
		dev_err(&client->dev, "clk lane must be map to physical lane 0\n");
		goto error_ep;
	}
	sensor->oif_ctrl = (polarities[4] << 15) + ((phy2log[4] - 1) << 13) +
			   (polarities[3] << 12) + ((phy2log[3] - 1) << 10) +
			   (polarities[2] <<  9) + ((phy2log[2] - 1) <<  7) +
			   (polarities[1] <<  6) + ((phy2log[1] - 1) <<  4) +
			   (polarities[0] <<  3) +
			   l_nb;
	sensor->nb_of_lane = l_nb;

	dev_dbg(&client->dev, "tx uses %d lanes", l_nb);
	for (i = 0; i < VGXY61_NB_POLARITIES; i++) {
		dev_dbg(&client->dev, "log2phy[%d] = %d\n", i, log2phy[i]);
		dev_dbg(&client->dev, "phy2log[%d] = %d\n", i, phy2log[i]);
		dev_dbg(&client->dev, "polarity[%d] = %d\n", i, polarities[i]);
	}
	dev_dbg(&client->dev, "oif_ctrl = 0x%04x\n", sensor->oif_ctrl);

	v4l2_fwnode_endpoint_free(&ep);

	return 0;

error_ep:
	v4l2_fwnode_endpoint_free(&ep);

	return -EINVAL;
}

static int vgxy61_configure(struct vgxy61_dev *sensor)
{
	u32 sensor_freq;
	u8 prediv, mult;
	int line_length;
	int ret = 0;

	compute_pll_parameters_by_freq(sensor->clk_freq, &prediv, &mult);
	sensor_freq = (mult * sensor->clk_freq) / prediv;
	/* Frequency to data rate is 1:1 ratio for MIPI */
	sensor->data_rate_in_mbps = sensor_freq;
	/* Video timing ISP path (pixel clock)  requires 804/5 mhz = 160 mhz */
	sensor->pclk = sensor_freq / 5;

	line_length = vgxy61_read_reg(sensor, VGXY61_REG_LINE_LENGTH);
	if (line_length < 0)
		return line_length;
	sensor->line_length = line_length;
	vgxy61_write_reg(sensor, VGXY61_REG_EXT_CLOCK, sensor->clk_freq, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_CLK_PLL_PREDIV, prediv, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_CLK_SYS_PLL_MULT, mult, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_OIF_CTRL, sensor->oif_ctrl, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_FRAME_CONTENT_CTRL, 0, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_BYPASS_CTRL, 4, &ret);
	if (ret)
		return ret;
	vgxy61_update_gpios_strobe_polarity(sensor, sensor->gpios_polarity);
	/* Set pattern generator solid to middle value */
	vgxy61_write_reg(sensor, VGXY61_REG_PATGEN_LONG_DATA_GR, 0x800, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_PATGEN_LONG_DATA_R, 0x800, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_PATGEN_LONG_DATA_B, 0x800, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_PATGEN_LONG_DATA_GB, 0x800, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_PATGEN_SHORT_DATA_GR, 0x800, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_PATGEN_SHORT_DATA_R, 0x800, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_PATGEN_SHORT_DATA_B, 0x800, &ret);
	vgxy61_write_reg(sensor, VGXY61_REG_PATGEN_SHORT_DATA_GB, 0x800, &ret);
	if (ret)
		return ret;

	return 0;
}

static int vgxy61_patch(struct vgxy61_dev *sensor)
{
	struct i2c_client *client = sensor->i2c_client;
	int patch, ret;

	ret = vgxy61_write_array(sensor, VGXY61_REG_FWPATCH_START_ADDR,
				 sizeof(patch_array), patch_array);
	if (ret)
		return ret;

	ret = vgxy61_write_reg(sensor, VGXY61_REG_STBY, 0x10, NULL);
	if (ret)
		return ret;

	ret = vgxy61_poll_reg(sensor, VGXY61_REG_STBY, 0, VGXY61_TIMEOUT_MS);
	if (ret)
		return ret;

	patch = vgxy61_read_reg(sensor, VGXY61_REG_FWPATCH_REVISION);
	if (patch < 0)
		return patch;

	if (patch != (VGXY61_FWPATCH_REVISION_MAJOR << 12) +
		     (VGXY61_FWPATCH_REVISION_MINOR << 8) +
		     VGXY61_FWPATCH_REVISION_MICRO) {
		dev_err(&client->dev, "bad patch version expected %d.%d.%d got %d.%d.%d\n",
			VGXY61_FWPATCH_REVISION_MAJOR,
			VGXY61_FWPATCH_REVISION_MINOR,
			VGXY61_FWPATCH_REVISION_MICRO,
			patch >> 12, (patch >> 8) & 0x0f, patch & 0xff);
		return -ENODEV;
	}
	dev_dbg(&client->dev, "patch %d.%d.%d applied\n",
		patch >> 12, (patch >> 8) & 0x0f, patch & 0xff);

	return 0;
}

static int vgxy61_detect_cut_version(struct vgxy61_dev *sensor)
{
	struct i2c_client *client = sensor->i2c_client;
	int device_rev;

	device_rev = vgxy61_read_reg(sensor, VGXY61_REG_REVISION);
	if (device_rev < 0)
		return device_rev;

	switch (device_rev >> 8) {
	case 0xA:
		dev_dbg(&client->dev, "Cut1 detected\n");
		dev_err(&client->dev, "Cut1 not supported by this driver\n");
		return -ENODEV;
	case 0xB:
		dev_dbg(&client->dev, "Cut2 detected\n");
		return 0;
	case 0xC:
		dev_dbg(&client->dev, "Cut3 detected\n");
		return 0;
	default:
		dev_err(&client->dev, "Unable to detect cut version\n");
		return -ENODEV;
	}
}

static int vgxy61_detect(struct vgxy61_dev *sensor)
{
	struct i2c_client *client = sensor->i2c_client;
	int id = 0;
	int ret, st;

	id = vgxy61_read_reg(sensor, VGXY61_REG_MODEL_ID);
	if (id < 0)
		return id;
	if (id != VG5661_MODEL_ID && id != VG5761_MODEL_ID) {
		dev_warn(&client->dev, "Unsupported sensor id %x\n", id);
		return -ENODEV;
	}
	dev_dbg(&client->dev, "detected sensor id = 0x%04x\n", id);
	sensor->id = id;

	ret = vgxy61_wait_state(sensor, VGXY61_SYSTEM_FSM_SW_STBY,
				VGXY61_TIMEOUT_MS);
	if (ret)
		return ret;

	st = vgxy61_read_reg(sensor, VGXY61_REG_NVM);
	if (st < 0)
		return st;
	if (st != VGXY61_NVM_OK)
		dev_warn(&client->dev, "Bad nvm state got %d\n", st);

	ret = vgxy61_detect_cut_version(sensor);
	if (ret)
		return ret;

	return 0;
}

/* Power/clock management functions */
static int vgxy61_power_on(struct device *dev)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct v4l2_subdev *sd = i2c_get_clientdata(client);
	struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
	int ret;

	ret = regulator_bulk_enable(ARRAY_SIZE(vgxy61_supply_name),
				    sensor->supplies);
	if (ret) {
		dev_err(&client->dev, "failed to enable regulators %d\n", ret);
		return ret;
	}

	ret = clk_prepare_enable(sensor->xclk);
	if (ret) {
		dev_err(&client->dev, "failed to enable clock %d\n", ret);
		goto disable_bulk;
	}

	if (sensor->reset_gpio) {
		ret = vgxy61_apply_reset(sensor);
		if (ret) {
			dev_err(&client->dev, "sensor reset failed %d\n", ret);
			goto disable_clock;
		}
	}

	ret = vgxy61_detect(sensor);
	if (ret) {
		dev_err(&client->dev, "sensor detect failed %d\n", ret);
		goto disable_clock;
	}

	ret = vgxy61_patch(sensor);
	if (ret) {
		dev_err(&client->dev, "sensor patch failed %d\n", ret);
		goto disable_clock;
	}

	ret = vgxy61_configure(sensor);
	if (ret) {
		dev_err(&client->dev, "sensor configuration failed %d\n", ret);
		goto disable_clock;
	}

	return 0;

disable_clock:
	clk_disable_unprepare(sensor->xclk);
disable_bulk:
	regulator_bulk_disable(ARRAY_SIZE(vgxy61_supply_name),
			       sensor->supplies);

	return ret;
}

static int vgxy61_power_off(struct device *dev)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct v4l2_subdev *sd = i2c_get_clientdata(client);
	struct vgxy61_dev *sensor = to_vgxy61_dev(sd);

	clk_disable_unprepare(sensor->xclk);
	regulator_bulk_disable(ARRAY_SIZE(vgxy61_supply_name),
			       sensor->supplies);
	return 0;
}

static void vgxy61_fill_sensor_param(struct vgxy61_dev *sensor)
{
	if (sensor->id == VG5761_MODEL_ID) {
		sensor->sensor_width = VGX761_WIDTH;
		sensor->sensor_height = VGX761_HEIGHT;
		sensor->sensor_modes = vgx761_mode_data;
		sensor->sensor_modes_nb = ARRAY_SIZE(vgx761_mode_data);
		sensor->default_mode = &vgx761_mode_data[VGX761_DEFAULT_MODE];
		sensor->rot_term = VGX761_SHORT_ROT_TERM;
	} else if (sensor->id == VG5661_MODEL_ID) {
		sensor->sensor_width = VGX661_WIDTH;
		sensor->sensor_height = VGX661_HEIGHT;
		sensor->sensor_modes = vgx661_mode_data;
		sensor->sensor_modes_nb = ARRAY_SIZE(vgx661_mode_data);
		sensor->default_mode = &vgx661_mode_data[VGX661_DEFAULT_MODE];
		sensor->rot_term = VGX661_SHORT_ROT_TERM;
	} else {
		/* Should never happen */
		WARN_ON(true);
	}
	sensor->current_mode = sensor->default_mode;
}

static int vgxy61_probe(struct i2c_client *client)
{
	struct device *dev = &client->dev;
	struct fwnode_handle *handle;
	struct vgxy61_dev *sensor;
	int ret;

	sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
	if (!sensor)
		return -ENOMEM;

	sensor->i2c_client = client;
	sensor->streaming = false;
	sensor->hdr = VGXY61_NO_HDR;
	sensor->expo_long = 200;
	sensor->expo_short = 0;
	sensor->hflip = false;
	sensor->vflip = false;
	sensor->analog_gain = 0;
	sensor->digital_gain = 256;

	handle = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), 0, 0, 0);
	if (!handle) {
		dev_err(dev, "handle node not found\n");
		return -EINVAL;
	}

	ret = vgxy61_tx_from_ep(sensor, handle);
	fwnode_handle_put(handle);
	if (ret) {
		dev_err(dev, "Failed to parse handle %d\n", ret);
		return ret;
	}

	sensor->xclk = devm_clk_get(dev, NULL);
	if (IS_ERR(sensor->xclk)) {
		dev_err(dev, "failed to get xclk\n");
		return PTR_ERR(sensor->xclk);
	}
	sensor->clk_freq = clk_get_rate(sensor->xclk);
	if (sensor->clk_freq < 6 * HZ_PER_MHZ ||
	    sensor->clk_freq > 27 * HZ_PER_MHZ) {
		dev_err(dev, "Only 6Mhz-27Mhz clock range supported. provide %lu MHz\n",
			sensor->clk_freq / HZ_PER_MHZ);
		return -EINVAL;
	}
	sensor->gpios_polarity =
		device_property_read_bool(dev, "st,strobe-gpios-polarity");

	v4l2_i2c_subdev_init(&sensor->sd, client, &vgxy61_subdev_ops);
	sensor->sd.internal_ops = &vgxy61_internal_ops;
	sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
			    V4L2_SUBDEV_FL_HAS_EVENTS;
	sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
	sensor->sd.entity.ops = &vgxy61_subdev_entity_ops;
	sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;

	sensor->reset_gpio = devm_gpiod_get_optional(dev, "reset",
						     GPIOD_OUT_HIGH);

	ret = vgxy61_get_regulators(sensor);
	if (ret) {
		dev_err(&client->dev, "failed to get regulators %d\n", ret);
		return ret;
	}

	ret = vgxy61_power_on(dev);
	if (ret)
		return ret;

	vgxy61_fill_sensor_param(sensor);
	vgxy61_fill_framefmt(sensor, sensor->current_mode, &sensor->fmt,
			     VGXY61_MEDIA_BUS_FMT_DEF);

	mutex_init(&sensor->lock);

	ret = vgxy61_update_hdr(sensor, sensor->hdr);
	if (ret)
		goto error_power_off;

	ret = vgxy61_init_controls(sensor);
	if (ret) {
		dev_err(&client->dev, "controls initialization failed %d\n",
			ret);
		goto error_power_off;
	}

	ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad);
	if (ret) {
		dev_err(&client->dev, "pads init failed %d\n", ret);
		goto error_handler_free;
	}

	/* Enable runtime PM and turn off the device */
	pm_runtime_set_active(dev);
	pm_runtime_enable(dev);
	pm_runtime_idle(dev);

	ret = v4l2_async_register_subdev(&sensor->sd);
	if (ret) {
		dev_err(&client->dev, "async subdev register failed %d\n", ret);
		goto error_pm_runtime;
	}

	pm_runtime_set_autosuspend_delay(&client->dev, 1000);
	pm_runtime_use_autosuspend(&client->dev);

	dev_dbg(&client->dev, "vgxy61 probe successfully\n");

	return 0;

error_pm_runtime:
	pm_runtime_disable(&client->dev);
	pm_runtime_set_suspended(&client->dev);
	media_entity_cleanup(&sensor->sd.entity);
error_handler_free:
	v4l2_ctrl_handler_free(sensor->sd.ctrl_handler);
error_power_off:
	mutex_destroy(&sensor->lock);
	vgxy61_power_off(dev);

	return ret;
}

static void vgxy61_remove(struct i2c_client *client)
{
	struct v4l2_subdev *sd = i2c_get_clientdata(client);
	struct vgxy61_dev *sensor = to_vgxy61_dev(sd);

	v4l2_async_unregister_subdev(&sensor->sd);
	mutex_destroy(&sensor->lock);
	media_entity_cleanup(&sensor->sd.entity);

	pm_runtime_disable(&client->dev);
	if (!pm_runtime_status_suspended(&client->dev))
		vgxy61_power_off(&client->dev);
	pm_runtime_set_suspended(&client->dev);
}

static const struct of_device_id vgxy61_dt_ids[] = {
	{ .compatible = "st,st-vgxy61" },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, vgxy61_dt_ids);

static const struct dev_pm_ops vgxy61_pm_ops = {
	SET_RUNTIME_PM_OPS(vgxy61_power_off, vgxy61_power_on, NULL)
};

static struct i2c_driver vgxy61_i2c_driver = {
	.driver = {
		.name  = "st-vgxy61",
		.of_match_table = vgxy61_dt_ids,
		.pm = &vgxy61_pm_ops,
	},
	.probe = vgxy61_probe,
	.remove = vgxy61_remove,
};

module_i2c_driver(vgxy61_i2c_driver);

MODULE_AUTHOR("Benjamin Mugnier <benjamin.mugnier@foss.st.com>");
MODULE_AUTHOR("Mickael Guene <mickael.guene@st.com>");
MODULE_AUTHOR("Sylvain Petinot <sylvain.petinot@foss.st.com>");
MODULE_DESCRIPTION("VGXY61 camera subdev driver");
MODULE_LICENSE("GPL");