summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
blob: cceb5aab6c832a5b00674b750d05468658df0aeb (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
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * DesignWare High-Definition Multimedia Interface (HDMI) driver
 *
 * Copyright (C) 2013-2015 Mentor Graphics Inc.
 * Copyright (C) 2011-2013 Freescale Semiconductor, Inc.
 * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
 */
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/hdmi.h>
#include <linux/i2c.h>
#include <linux/irq.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/of.h>
#include <linux/pinctrl/consumer.h>
#include <linux/regmap.h>
#include <linux/dma-mapping.h>
#include <linux/spinlock.h>

#include <media/cec-notifier.h>

#include <uapi/linux/media-bus-format.h>
#include <uapi/linux/videodev2.h>

#include <drm/bridge/dw_hdmi.h>
#include <drm/display/drm_hdmi_helper.h>
#include <drm/display/drm_scdc_helper.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_bridge.h>
#include <drm/drm_edid.h>
#include <drm/drm_of.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>

#include "dw-hdmi-audio.h"
#include "dw-hdmi-cec.h"
#include "dw-hdmi.h"

#define DDC_CI_ADDR		0x37
#define DDC_SEGMENT_ADDR	0x30

#define HDMI_EDID_LEN		512

/* DW-HDMI Controller >= 0x200a are at least compliant with SCDC version 1 */
#define SCDC_MIN_SOURCE_VERSION	0x1

#define HDMI14_MAX_TMDSCLK	340000000

static const u16 csc_coeff_default[3][4] = {
	{ 0x2000, 0x0000, 0x0000, 0x0000 },
	{ 0x0000, 0x2000, 0x0000, 0x0000 },
	{ 0x0000, 0x0000, 0x2000, 0x0000 }
};

static const u16 csc_coeff_rgb_out_eitu601[3][4] = {
	{ 0x2000, 0x6926, 0x74fd, 0x010e },
	{ 0x2000, 0x2cdd, 0x0000, 0x7e9a },
	{ 0x2000, 0x0000, 0x38b4, 0x7e3b }
};

static const u16 csc_coeff_rgb_out_eitu709[3][4] = {
	{ 0x2000, 0x7106, 0x7a02, 0x00a7 },
	{ 0x2000, 0x3264, 0x0000, 0x7e6d },
	{ 0x2000, 0x0000, 0x3b61, 0x7e25 }
};

static const u16 csc_coeff_rgb_in_eitu601[3][4] = {
	{ 0x2591, 0x1322, 0x074b, 0x0000 },
	{ 0x6535, 0x2000, 0x7acc, 0x0200 },
	{ 0x6acd, 0x7534, 0x2000, 0x0200 }
};

static const u16 csc_coeff_rgb_in_eitu709[3][4] = {
	{ 0x2dc5, 0x0d9b, 0x049e, 0x0000 },
	{ 0x62f0, 0x2000, 0x7d11, 0x0200 },
	{ 0x6756, 0x78ab, 0x2000, 0x0200 }
};

static const u16 csc_coeff_rgb_full_to_rgb_limited[3][4] = {
	{ 0x1b7c, 0x0000, 0x0000, 0x0020 },
	{ 0x0000, 0x1b7c, 0x0000, 0x0020 },
	{ 0x0000, 0x0000, 0x1b7c, 0x0020 }
};

struct hdmi_vmode {
	bool mdataenablepolarity;

	unsigned int mpixelclock;
	unsigned int mpixelrepetitioninput;
	unsigned int mpixelrepetitionoutput;
	unsigned int mtmdsclock;
};

struct hdmi_data_info {
	unsigned int enc_in_bus_format;
	unsigned int enc_out_bus_format;
	unsigned int enc_in_encoding;
	unsigned int enc_out_encoding;
	unsigned int pix_repet_factor;
	unsigned int hdcp_enable;
	struct hdmi_vmode video_mode;
	bool rgb_limited_range;
};

struct dw_hdmi_i2c {
	struct i2c_adapter	adap;

	struct mutex		lock;	/* used to serialize data transfers */
	struct completion	cmp;
	u8			stat;

	u8			slave_reg;
	bool			is_regaddr;
	bool			is_segment;
};

struct dw_hdmi_phy_data {
	enum dw_hdmi_phy_type type;
	const char *name;
	unsigned int gen;
	bool has_svsret;
	int (*configure)(struct dw_hdmi *hdmi,
			 const struct dw_hdmi_plat_data *pdata,
			 unsigned long mpixelclock);
};

struct dw_hdmi {
	struct drm_connector connector;
	struct drm_bridge bridge;
	struct drm_bridge *next_bridge;

	unsigned int version;

	struct platform_device *audio;
	struct platform_device *cec;
	struct device *dev;
	struct clk *isfr_clk;
	struct clk *iahb_clk;
	struct clk *cec_clk;
	struct dw_hdmi_i2c *i2c;

	struct hdmi_data_info hdmi_data;
	const struct dw_hdmi_plat_data *plat_data;

	int vic;

	u8 edid[HDMI_EDID_LEN];

	struct {
		const struct dw_hdmi_phy_ops *ops;
		const char *name;
		void *data;
		bool enabled;
	} phy;

	struct drm_display_mode previous_mode;

	struct i2c_adapter *ddc;
	void __iomem *regs;
	bool sink_is_hdmi;
	bool sink_has_audio;

	struct pinctrl *pinctrl;
	struct pinctrl_state *default_state;
	struct pinctrl_state *unwedge_state;

	struct mutex mutex;		/* for state below and previous_mode */
	enum drm_connector_force force;	/* mutex-protected force state */
	struct drm_connector *curr_conn;/* current connector (only valid when !disabled) */
	bool disabled;			/* DRM has disabled our bridge */
	bool bridge_is_on;		/* indicates the bridge is on */
	bool rxsense;			/* rxsense state */
	u8 phy_mask;			/* desired phy int mask settings */
	u8 mc_clkdis;			/* clock disable register */

	spinlock_t audio_lock;
	struct mutex audio_mutex;
	unsigned int sample_non_pcm;
	unsigned int sample_width;
	unsigned int sample_rate;
	unsigned int channels;
	unsigned int audio_cts;
	unsigned int audio_n;
	bool audio_enable;

	unsigned int reg_shift;
	struct regmap *regm;
	void (*enable_audio)(struct dw_hdmi *hdmi);
	void (*disable_audio)(struct dw_hdmi *hdmi);

	struct mutex cec_notifier_mutex;
	struct cec_notifier *cec_notifier;

	hdmi_codec_plugged_cb plugged_cb;
	struct device *codec_dev;
	enum drm_connector_status last_connector_result;
};

#define HDMI_IH_PHY_STAT0_RX_SENSE \
	(HDMI_IH_PHY_STAT0_RX_SENSE0 | HDMI_IH_PHY_STAT0_RX_SENSE1 | \
	 HDMI_IH_PHY_STAT0_RX_SENSE2 | HDMI_IH_PHY_STAT0_RX_SENSE3)

#define HDMI_PHY_RX_SENSE \
	(HDMI_PHY_RX_SENSE0 | HDMI_PHY_RX_SENSE1 | \
	 HDMI_PHY_RX_SENSE2 | HDMI_PHY_RX_SENSE3)

static inline void hdmi_writeb(struct dw_hdmi *hdmi, u8 val, int offset)
{
	regmap_write(hdmi->regm, offset << hdmi->reg_shift, val);
}

static inline u8 hdmi_readb(struct dw_hdmi *hdmi, int offset)
{
	unsigned int val = 0;

	regmap_read(hdmi->regm, offset << hdmi->reg_shift, &val);

	return val;
}

static void handle_plugged_change(struct dw_hdmi *hdmi, bool plugged)
{
	if (hdmi->plugged_cb && hdmi->codec_dev)
		hdmi->plugged_cb(hdmi->codec_dev, plugged);
}

int dw_hdmi_set_plugged_cb(struct dw_hdmi *hdmi, hdmi_codec_plugged_cb fn,
			   struct device *codec_dev)
{
	bool plugged;

	mutex_lock(&hdmi->mutex);
	hdmi->plugged_cb = fn;
	hdmi->codec_dev = codec_dev;
	plugged = hdmi->last_connector_result == connector_status_connected;
	handle_plugged_change(hdmi, plugged);
	mutex_unlock(&hdmi->mutex);

	return 0;
}
EXPORT_SYMBOL_GPL(dw_hdmi_set_plugged_cb);

static void hdmi_modb(struct dw_hdmi *hdmi, u8 data, u8 mask, unsigned reg)
{
	regmap_update_bits(hdmi->regm, reg << hdmi->reg_shift, mask, data);
}

static void hdmi_mask_writeb(struct dw_hdmi *hdmi, u8 data, unsigned int reg,
			     u8 shift, u8 mask)
{
	hdmi_modb(hdmi, data << shift, mask, reg);
}

static void dw_hdmi_i2c_init(struct dw_hdmi *hdmi)
{
	hdmi_writeb(hdmi, HDMI_PHY_I2CM_INT_ADDR_DONE_POL,
		    HDMI_PHY_I2CM_INT_ADDR);

	hdmi_writeb(hdmi, HDMI_PHY_I2CM_CTLINT_ADDR_NAC_POL |
		    HDMI_PHY_I2CM_CTLINT_ADDR_ARBITRATION_POL,
		    HDMI_PHY_I2CM_CTLINT_ADDR);

	/* Software reset */
	hdmi_writeb(hdmi, 0x00, HDMI_I2CM_SOFTRSTZ);

	/* Set Standard Mode speed (determined to be 100KHz on iMX6) */
	hdmi_writeb(hdmi, 0x00, HDMI_I2CM_DIV);

	/* Set done, not acknowledged and arbitration interrupt polarities */
	hdmi_writeb(hdmi, HDMI_I2CM_INT_DONE_POL, HDMI_I2CM_INT);
	hdmi_writeb(hdmi, HDMI_I2CM_CTLINT_NAC_POL | HDMI_I2CM_CTLINT_ARB_POL,
		    HDMI_I2CM_CTLINT);

	/* Clear DONE and ERROR interrupts */
	hdmi_writeb(hdmi, HDMI_IH_I2CM_STAT0_ERROR | HDMI_IH_I2CM_STAT0_DONE,
		    HDMI_IH_I2CM_STAT0);

	/* Mute DONE and ERROR interrupts */
	hdmi_writeb(hdmi, HDMI_IH_I2CM_STAT0_ERROR | HDMI_IH_I2CM_STAT0_DONE,
		    HDMI_IH_MUTE_I2CM_STAT0);
}

static bool dw_hdmi_i2c_unwedge(struct dw_hdmi *hdmi)
{
	/* If no unwedge state then give up */
	if (!hdmi->unwedge_state)
		return false;

	dev_info(hdmi->dev, "Attempting to unwedge stuck i2c bus\n");

	/*
	 * This is a huge hack to workaround a problem where the dw_hdmi i2c
	 * bus could sometimes get wedged.  Once wedged there doesn't appear
	 * to be any way to unwedge it (including the HDMI_I2CM_SOFTRSTZ)
	 * other than pulsing the SDA line.
	 *
	 * We appear to be able to pulse the SDA line (in the eyes of dw_hdmi)
	 * by:
	 * 1. Remux the pin as a GPIO output, driven low.
	 * 2. Wait a little while.  1 ms seems to work, but we'll do 10.
	 * 3. Immediately jump to remux the pin as dw_hdmi i2c again.
	 *
	 * At the moment of remuxing, the line will still be low due to its
	 * recent stint as an output, but then it will be pulled high by the
	 * (presumed) external pullup.  dw_hdmi seems to see this as a rising
	 * edge and that seems to get it out of its jam.
	 *
	 * This wedging was only ever seen on one TV, and only on one of
	 * its HDMI ports.  It happened when the TV was powered on while the
	 * device was plugged in.  A scope trace shows the TV bringing both SDA
	 * and SCL low, then bringing them both back up at roughly the same
	 * time.  Presumably this confuses dw_hdmi because it saw activity but
	 * no real STOP (maybe it thinks there's another master on the bus?).
	 * Giving it a clean rising edge of SDA while SCL is already high
	 * presumably makes dw_hdmi see a STOP which seems to bring dw_hdmi out
	 * of its stupor.
	 *
	 * Note that after coming back alive, transfers seem to immediately
	 * resume, so if we unwedge due to a timeout we should wait a little
	 * longer for our transfer to finish, since it might have just started
	 * now.
	 */
	pinctrl_select_state(hdmi->pinctrl, hdmi->unwedge_state);
	msleep(10);
	pinctrl_select_state(hdmi->pinctrl, hdmi->default_state);

	return true;
}

static int dw_hdmi_i2c_wait(struct dw_hdmi *hdmi)
{
	struct dw_hdmi_i2c *i2c = hdmi->i2c;
	int stat;

	stat = wait_for_completion_timeout(&i2c->cmp, HZ / 10);
	if (!stat) {
		/* If we can't unwedge, return timeout */
		if (!dw_hdmi_i2c_unwedge(hdmi))
			return -EAGAIN;

		/* We tried to unwedge; give it another chance */
		stat = wait_for_completion_timeout(&i2c->cmp, HZ / 10);
		if (!stat)
			return -EAGAIN;
	}

	/* Check for error condition on the bus */
	if (i2c->stat & HDMI_IH_I2CM_STAT0_ERROR)
		return -EIO;

	return 0;
}

static int dw_hdmi_i2c_read(struct dw_hdmi *hdmi,
			    unsigned char *buf, unsigned int length)
{
	struct dw_hdmi_i2c *i2c = hdmi->i2c;
	int ret;

	if (!i2c->is_regaddr) {
		dev_dbg(hdmi->dev, "set read register address to 0\n");
		i2c->slave_reg = 0x00;
		i2c->is_regaddr = true;
	}

	while (length--) {
		reinit_completion(&i2c->cmp);

		hdmi_writeb(hdmi, i2c->slave_reg++, HDMI_I2CM_ADDRESS);
		if (i2c->is_segment)
			hdmi_writeb(hdmi, HDMI_I2CM_OPERATION_READ_EXT,
				    HDMI_I2CM_OPERATION);
		else
			hdmi_writeb(hdmi, HDMI_I2CM_OPERATION_READ,
				    HDMI_I2CM_OPERATION);

		ret = dw_hdmi_i2c_wait(hdmi);
		if (ret)
			return ret;

		*buf++ = hdmi_readb(hdmi, HDMI_I2CM_DATAI);
	}
	i2c->is_segment = false;

	return 0;
}

static int dw_hdmi_i2c_write(struct dw_hdmi *hdmi,
			     unsigned char *buf, unsigned int length)
{
	struct dw_hdmi_i2c *i2c = hdmi->i2c;
	int ret;

	if (!i2c->is_regaddr) {
		/* Use the first write byte as register address */
		i2c->slave_reg = buf[0];
		length--;
		buf++;
		i2c->is_regaddr = true;
	}

	while (length--) {
		reinit_completion(&i2c->cmp);

		hdmi_writeb(hdmi, *buf++, HDMI_I2CM_DATAO);
		hdmi_writeb(hdmi, i2c->slave_reg++, HDMI_I2CM_ADDRESS);
		hdmi_writeb(hdmi, HDMI_I2CM_OPERATION_WRITE,
			    HDMI_I2CM_OPERATION);

		ret = dw_hdmi_i2c_wait(hdmi);
		if (ret)
			return ret;
	}

	return 0;
}

static int dw_hdmi_i2c_xfer(struct i2c_adapter *adap,
			    struct i2c_msg *msgs, int num)
{
	struct dw_hdmi *hdmi = i2c_get_adapdata(adap);
	struct dw_hdmi_i2c *i2c = hdmi->i2c;
	u8 addr = msgs[0].addr;
	int i, ret = 0;

	if (addr == DDC_CI_ADDR)
		/*
		 * The internal I2C controller does not support the multi-byte
		 * read and write operations needed for DDC/CI.
		 * TOFIX: Blacklist the DDC/CI address until we filter out
		 * unsupported I2C operations.
		 */
		return -EOPNOTSUPP;

	dev_dbg(hdmi->dev, "xfer: num: %d, addr: %#x\n", num, addr);

	for (i = 0; i < num; i++) {
		if (msgs[i].len == 0) {
			dev_dbg(hdmi->dev,
				"unsupported transfer %d/%d, no data\n",
				i + 1, num);
			return -EOPNOTSUPP;
		}
	}

	mutex_lock(&i2c->lock);

	/* Unmute DONE and ERROR interrupts */
	hdmi_writeb(hdmi, 0x00, HDMI_IH_MUTE_I2CM_STAT0);

	/* Set slave device address taken from the first I2C message */
	hdmi_writeb(hdmi, addr, HDMI_I2CM_SLAVE);

	/* Set slave device register address on transfer */
	i2c->is_regaddr = false;

	/* Set segment pointer for I2C extended read mode operation */
	i2c->is_segment = false;

	for (i = 0; i < num; i++) {
		dev_dbg(hdmi->dev, "xfer: num: %d/%d, len: %d, flags: %#x\n",
			i + 1, num, msgs[i].len, msgs[i].flags);
		if (msgs[i].addr == DDC_SEGMENT_ADDR && msgs[i].len == 1) {
			i2c->is_segment = true;
			hdmi_writeb(hdmi, DDC_SEGMENT_ADDR, HDMI_I2CM_SEGADDR);
			hdmi_writeb(hdmi, *msgs[i].buf, HDMI_I2CM_SEGPTR);
		} else {
			if (msgs[i].flags & I2C_M_RD)
				ret = dw_hdmi_i2c_read(hdmi, msgs[i].buf,
						       msgs[i].len);
			else
				ret = dw_hdmi_i2c_write(hdmi, msgs[i].buf,
							msgs[i].len);
		}
		if (ret < 0)
			break;
	}

	if (!ret)
		ret = num;

	/* Mute DONE and ERROR interrupts */
	hdmi_writeb(hdmi, HDMI_IH_I2CM_STAT0_ERROR | HDMI_IH_I2CM_STAT0_DONE,
		    HDMI_IH_MUTE_I2CM_STAT0);

	mutex_unlock(&i2c->lock);

	return ret;
}

static u32 dw_hdmi_i2c_func(struct i2c_adapter *adapter)
{
	return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
}

static const struct i2c_algorithm dw_hdmi_algorithm = {
	.master_xfer	= dw_hdmi_i2c_xfer,
	.functionality	= dw_hdmi_i2c_func,
};

static struct i2c_adapter *dw_hdmi_i2c_adapter(struct dw_hdmi *hdmi)
{
	struct i2c_adapter *adap;
	struct dw_hdmi_i2c *i2c;
	int ret;

	i2c = devm_kzalloc(hdmi->dev, sizeof(*i2c), GFP_KERNEL);
	if (!i2c)
		return ERR_PTR(-ENOMEM);

	mutex_init(&i2c->lock);
	init_completion(&i2c->cmp);

	adap = &i2c->adap;
	adap->owner = THIS_MODULE;
	adap->dev.parent = hdmi->dev;
	adap->algo = &dw_hdmi_algorithm;
	strscpy(adap->name, "DesignWare HDMI", sizeof(adap->name));
	i2c_set_adapdata(adap, hdmi);

	ret = i2c_add_adapter(adap);
	if (ret) {
		dev_warn(hdmi->dev, "cannot add %s I2C adapter\n", adap->name);
		devm_kfree(hdmi->dev, i2c);
		return ERR_PTR(ret);
	}

	hdmi->i2c = i2c;

	dev_info(hdmi->dev, "registered %s I2C bus driver\n", adap->name);

	return adap;
}

static void hdmi_set_cts_n(struct dw_hdmi *hdmi, unsigned int cts,
			   unsigned int n)
{
	/* Must be set/cleared first */
	hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3);

	/* nshift factor = 0 */
	hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_N_SHIFT_MASK, HDMI_AUD_CTS3);

	/* Use automatic CTS generation mode when CTS is not set */
	if (cts)
		hdmi_writeb(hdmi, ((cts >> 16) &
				   HDMI_AUD_CTS3_AUDCTS19_16_MASK) |
				  HDMI_AUD_CTS3_CTS_MANUAL,
			    HDMI_AUD_CTS3);
	else
		hdmi_writeb(hdmi, 0, HDMI_AUD_CTS3);
	hdmi_writeb(hdmi, (cts >> 8) & 0xff, HDMI_AUD_CTS2);
	hdmi_writeb(hdmi, cts & 0xff, HDMI_AUD_CTS1);

	hdmi_writeb(hdmi, (n >> 16) & 0x0f, HDMI_AUD_N3);
	hdmi_writeb(hdmi, (n >> 8) & 0xff, HDMI_AUD_N2);
	hdmi_writeb(hdmi, n & 0xff, HDMI_AUD_N1);
}

static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk)
{
	unsigned int n = (128 * freq) / 1000;
	unsigned int mult = 1;

	while (freq > 48000) {
		mult *= 2;
		freq /= 2;
	}

	switch (freq) {
	case 32000:
		if (pixel_clk == 25175000)
			n = 4576;
		else if (pixel_clk == 27027000)
			n = 4096;
		else if (pixel_clk == 74176000 || pixel_clk == 148352000)
			n = 11648;
		else if (pixel_clk == 297000000)
			n = 3072;
		else
			n = 4096;
		n *= mult;
		break;

	case 44100:
		if (pixel_clk == 25175000)
			n = 7007;
		else if (pixel_clk == 74176000)
			n = 17836;
		else if (pixel_clk == 148352000)
			n = 8918;
		else if (pixel_clk == 297000000)
			n = 4704;
		else
			n = 6272;
		n *= mult;
		break;

	case 48000:
		if (pixel_clk == 25175000)
			n = 6864;
		else if (pixel_clk == 27027000)
			n = 6144;
		else if (pixel_clk == 74176000)
			n = 11648;
		else if (pixel_clk == 148352000)
			n = 5824;
		else if (pixel_clk == 297000000)
			n = 5120;
		else
			n = 6144;
		n *= mult;
		break;

	default:
		break;
	}

	return n;
}

/*
 * When transmitting IEC60958 linear PCM audio, these registers allow to
 * configure the channel status information of all the channel status
 * bits in the IEC60958 frame. For the moment this configuration is only
 * used when the I2S audio interface, General Purpose Audio (GPA),
 * or AHB audio DMA (AHBAUDDMA) interface is active
 * (for S/PDIF interface this information comes from the stream).
 */
void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi,
				u8 *channel_status)
{
	/*
	 * Set channel status register for frequency and word length.
	 * Use default values for other registers.
	 */
	hdmi_writeb(hdmi, channel_status[3], HDMI_FC_AUDSCHNLS7);
	hdmi_writeb(hdmi, channel_status[4], HDMI_FC_AUDSCHNLS8);
}
EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_status);

static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi,
	unsigned long pixel_clk, unsigned int sample_rate)
{
	unsigned long ftdms = pixel_clk;
	unsigned int n, cts;
	u8 config3;
	u64 tmp;

	n = hdmi_compute_n(sample_rate, pixel_clk);

	config3 = hdmi_readb(hdmi, HDMI_CONFIG3_ID);

	/* Compute CTS when using internal AHB audio or General Parallel audio*/
	if ((config3 & HDMI_CONFIG3_AHBAUDDMA) || (config3 & HDMI_CONFIG3_GPAUD)) {
		/*
		 * Compute the CTS value from the N value.  Note that CTS and N
		 * can be up to 20 bits in total, so we need 64-bit math.  Also
		 * note that our TDMS clock is not fully accurate; it is
		 * accurate to kHz.  This can introduce an unnecessary remainder
		 * in the calculation below, so we don't try to warn about that.
		 */
		tmp = (u64)ftdms * n;
		do_div(tmp, 128 * sample_rate);
		cts = tmp;

		dev_dbg(hdmi->dev, "%s: fs=%uHz ftdms=%lu.%03luMHz N=%d cts=%d\n",
			__func__, sample_rate,
			ftdms / 1000000, (ftdms / 1000) % 1000,
			n, cts);
	} else {
		cts = 0;
	}

	spin_lock_irq(&hdmi->audio_lock);
	hdmi->audio_n = n;
	hdmi->audio_cts = cts;
	hdmi_set_cts_n(hdmi, cts, hdmi->audio_enable ? n : 0);
	spin_unlock_irq(&hdmi->audio_lock);
}

static void hdmi_init_clk_regenerator(struct dw_hdmi *hdmi)
{
	mutex_lock(&hdmi->audio_mutex);
	hdmi_set_clk_regenerator(hdmi, 74250000, hdmi->sample_rate);
	mutex_unlock(&hdmi->audio_mutex);
}

static void hdmi_clk_regenerator_update_pixel_clock(struct dw_hdmi *hdmi)
{
	mutex_lock(&hdmi->audio_mutex);
	hdmi_set_clk_regenerator(hdmi, hdmi->hdmi_data.video_mode.mtmdsclock,
				 hdmi->sample_rate);
	mutex_unlock(&hdmi->audio_mutex);
}

void dw_hdmi_set_sample_width(struct dw_hdmi *hdmi, unsigned int width)
{
	mutex_lock(&hdmi->audio_mutex);
	hdmi->sample_width = width;
	mutex_unlock(&hdmi->audio_mutex);
}
EXPORT_SYMBOL_GPL(dw_hdmi_set_sample_width);

void dw_hdmi_set_sample_non_pcm(struct dw_hdmi *hdmi, unsigned int non_pcm)
{
	mutex_lock(&hdmi->audio_mutex);
	hdmi->sample_non_pcm = non_pcm;
	mutex_unlock(&hdmi->audio_mutex);
}
EXPORT_SYMBOL_GPL(dw_hdmi_set_sample_non_pcm);

void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate)
{
	mutex_lock(&hdmi->audio_mutex);
	hdmi->sample_rate = rate;
	hdmi_set_clk_regenerator(hdmi, hdmi->hdmi_data.video_mode.mtmdsclock,
				 hdmi->sample_rate);
	mutex_unlock(&hdmi->audio_mutex);
}
EXPORT_SYMBOL_GPL(dw_hdmi_set_sample_rate);

void dw_hdmi_set_channel_count(struct dw_hdmi *hdmi, unsigned int cnt)
{
	u8 layout;

	mutex_lock(&hdmi->audio_mutex);
	hdmi->channels = cnt;

	/*
	 * For >2 channel PCM audio, we need to select layout 1
	 * and set an appropriate channel map.
	 */
	if (cnt > 2)
		layout = HDMI_FC_AUDSCONF_AUD_PACKET_LAYOUT_LAYOUT1;
	else
		layout = HDMI_FC_AUDSCONF_AUD_PACKET_LAYOUT_LAYOUT0;

	hdmi_modb(hdmi, layout, HDMI_FC_AUDSCONF_AUD_PACKET_LAYOUT_MASK,
		  HDMI_FC_AUDSCONF);

	/* Set the audio infoframes channel count */
	hdmi_modb(hdmi, (cnt - 1) << HDMI_FC_AUDICONF0_CC_OFFSET,
		  HDMI_FC_AUDICONF0_CC_MASK, HDMI_FC_AUDICONF0);

	mutex_unlock(&hdmi->audio_mutex);
}
EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_count);

void dw_hdmi_set_channel_allocation(struct dw_hdmi *hdmi, unsigned int ca)
{
	mutex_lock(&hdmi->audio_mutex);

	hdmi_writeb(hdmi, ca, HDMI_FC_AUDICONF2);

	mutex_unlock(&hdmi->audio_mutex);
}
EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_allocation);

static void hdmi_enable_audio_clk(struct dw_hdmi *hdmi, bool enable)
{
	if (enable)
		hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_AUDCLK_DISABLE;
	else
		hdmi->mc_clkdis |= HDMI_MC_CLKDIS_AUDCLK_DISABLE;
	hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);
}

static u8 *hdmi_audio_get_eld(struct dw_hdmi *hdmi)
{
	if (!hdmi->curr_conn)
		return NULL;

	return hdmi->curr_conn->eld;
}

static void dw_hdmi_gp_audio_enable(struct dw_hdmi *hdmi)
{
	const struct dw_hdmi_plat_data *pdata = hdmi->plat_data;
	int sample_freq = 0x2, org_sample_freq = 0xD;
	int ch_mask = BIT(hdmi->channels) - 1;

	switch (hdmi->sample_rate) {
	case 32000:
		sample_freq = 0x03;
		org_sample_freq = 0x0C;
		break;
	case 44100:
		sample_freq = 0x00;
		org_sample_freq = 0x0F;
		break;
	case 48000:
		sample_freq = 0x02;
		org_sample_freq = 0x0D;
		break;
	case 88200:
		sample_freq = 0x08;
		org_sample_freq = 0x07;
		break;
	case 96000:
		sample_freq = 0x0A;
		org_sample_freq = 0x05;
		break;
	case 176400:
		sample_freq = 0x0C;
		org_sample_freq = 0x03;
		break;
	case 192000:
		sample_freq = 0x0E;
		org_sample_freq = 0x01;
		break;
	default:
		break;
	}

	hdmi_set_cts_n(hdmi, hdmi->audio_cts, hdmi->audio_n);
	hdmi_enable_audio_clk(hdmi, true);

	hdmi_writeb(hdmi, 0x1, HDMI_FC_AUDSCHNLS0);
	hdmi_writeb(hdmi, hdmi->channels, HDMI_FC_AUDSCHNLS2);
	hdmi_writeb(hdmi, 0x22, HDMI_FC_AUDSCHNLS3);
	hdmi_writeb(hdmi, 0x22, HDMI_FC_AUDSCHNLS4);
	hdmi_writeb(hdmi, 0x11, HDMI_FC_AUDSCHNLS5);
	hdmi_writeb(hdmi, 0x11, HDMI_FC_AUDSCHNLS6);
	hdmi_writeb(hdmi, (0x3 << 4) | sample_freq, HDMI_FC_AUDSCHNLS7);
	hdmi_writeb(hdmi, (org_sample_freq << 4) | 0xb, HDMI_FC_AUDSCHNLS8);

	hdmi_writeb(hdmi, ch_mask, HDMI_GP_CONF1);
	hdmi_writeb(hdmi, 0x02, HDMI_GP_CONF2);
	hdmi_writeb(hdmi, 0x01, HDMI_GP_CONF0);

	hdmi_modb(hdmi,  0x3, 0x3, HDMI_FC_DATAUTO3);

	/* hbr */
	if (hdmi->sample_rate == 192000 && hdmi->channels == 8 &&
	    hdmi->sample_width == 32 && hdmi->sample_non_pcm)
		hdmi_modb(hdmi, 0x01, 0x01, HDMI_GP_CONF2);

	if (pdata->enable_audio)
		pdata->enable_audio(hdmi,
				    hdmi->channels,
				    hdmi->sample_width,
				    hdmi->sample_rate,
				    hdmi->sample_non_pcm);
}

static void dw_hdmi_gp_audio_disable(struct dw_hdmi *hdmi)
{
	const struct dw_hdmi_plat_data *pdata = hdmi->plat_data;

	hdmi_set_cts_n(hdmi, hdmi->audio_cts, 0);

	hdmi_modb(hdmi,  0, 0x3, HDMI_FC_DATAUTO3);
	if (pdata->disable_audio)
		pdata->disable_audio(hdmi);

	hdmi_enable_audio_clk(hdmi, false);
}

static void dw_hdmi_ahb_audio_enable(struct dw_hdmi *hdmi)
{
	hdmi_set_cts_n(hdmi, hdmi->audio_cts, hdmi->audio_n);
}

static void dw_hdmi_ahb_audio_disable(struct dw_hdmi *hdmi)
{
	hdmi_set_cts_n(hdmi, hdmi->audio_cts, 0);
}

static void dw_hdmi_i2s_audio_enable(struct dw_hdmi *hdmi)
{
	hdmi_set_cts_n(hdmi, hdmi->audio_cts, hdmi->audio_n);
	hdmi_enable_audio_clk(hdmi, true);
}

static void dw_hdmi_i2s_audio_disable(struct dw_hdmi *hdmi)
{
	hdmi_enable_audio_clk(hdmi, false);
}

void dw_hdmi_audio_enable(struct dw_hdmi *hdmi)
{
	unsigned long flags;

	spin_lock_irqsave(&hdmi->audio_lock, flags);
	hdmi->audio_enable = true;
	if (hdmi->enable_audio)
		hdmi->enable_audio(hdmi);
	spin_unlock_irqrestore(&hdmi->audio_lock, flags);
}
EXPORT_SYMBOL_GPL(dw_hdmi_audio_enable);

void dw_hdmi_audio_disable(struct dw_hdmi *hdmi)
{
	unsigned long flags;

	spin_lock_irqsave(&hdmi->audio_lock, flags);
	hdmi->audio_enable = false;
	if (hdmi->disable_audio)
		hdmi->disable_audio(hdmi);
	spin_unlock_irqrestore(&hdmi->audio_lock, flags);
}
EXPORT_SYMBOL_GPL(dw_hdmi_audio_disable);

static bool hdmi_bus_fmt_is_rgb(unsigned int bus_format)
{
	switch (bus_format) {
	case MEDIA_BUS_FMT_RGB888_1X24:
	case MEDIA_BUS_FMT_RGB101010_1X30:
	case MEDIA_BUS_FMT_RGB121212_1X36:
	case MEDIA_BUS_FMT_RGB161616_1X48:
		return true;

	default:
		return false;
	}
}

static bool hdmi_bus_fmt_is_yuv444(unsigned int bus_format)
{
	switch (bus_format) {
	case MEDIA_BUS_FMT_YUV8_1X24:
	case MEDIA_BUS_FMT_YUV10_1X30:
	case MEDIA_BUS_FMT_YUV12_1X36:
	case MEDIA_BUS_FMT_YUV16_1X48:
		return true;

	default:
		return false;
	}
}

static bool hdmi_bus_fmt_is_yuv422(unsigned int bus_format)
{
	switch (bus_format) {
	case MEDIA_BUS_FMT_UYVY8_1X16:
	case MEDIA_BUS_FMT_UYVY10_1X20:
	case MEDIA_BUS_FMT_UYVY12_1X24:
		return true;

	default:
		return false;
	}
}

static bool hdmi_bus_fmt_is_yuv420(unsigned int bus_format)
{
	switch (bus_format) {
	case MEDIA_BUS_FMT_UYYVYY8_0_5X24:
	case MEDIA_BUS_FMT_UYYVYY10_0_5X30:
	case MEDIA_BUS_FMT_UYYVYY12_0_5X36:
	case MEDIA_BUS_FMT_UYYVYY16_0_5X48:
		return true;

	default:
		return false;
	}
}

static int hdmi_bus_fmt_color_depth(unsigned int bus_format)
{
	switch (bus_format) {
	case MEDIA_BUS_FMT_RGB888_1X24:
	case MEDIA_BUS_FMT_YUV8_1X24:
	case MEDIA_BUS_FMT_UYVY8_1X16:
	case MEDIA_BUS_FMT_UYYVYY8_0_5X24:
		return 8;

	case MEDIA_BUS_FMT_RGB101010_1X30:
	case MEDIA_BUS_FMT_YUV10_1X30:
	case MEDIA_BUS_FMT_UYVY10_1X20:
	case MEDIA_BUS_FMT_UYYVYY10_0_5X30:
		return 10;

	case MEDIA_BUS_FMT_RGB121212_1X36:
	case MEDIA_BUS_FMT_YUV12_1X36:
	case MEDIA_BUS_FMT_UYVY12_1X24:
	case MEDIA_BUS_FMT_UYYVYY12_0_5X36:
		return 12;

	case MEDIA_BUS_FMT_RGB161616_1X48:
	case MEDIA_BUS_FMT_YUV16_1X48:
	case MEDIA_BUS_FMT_UYYVYY16_0_5X48:
		return 16;

	default:
		return 0;
	}
}

/*
 * this submodule is responsible for the video data synchronization.
 * for example, for RGB 4:4:4 input, the data map is defined as
 *			pin{47~40} <==> R[7:0]
 *			pin{31~24} <==> G[7:0]
 *			pin{15~8}  <==> B[7:0]
 */
static void hdmi_video_sample(struct dw_hdmi *hdmi)
{
	int color_format = 0;
	u8 val;

	switch (hdmi->hdmi_data.enc_in_bus_format) {
	case MEDIA_BUS_FMT_RGB888_1X24:
		color_format = 0x01;
		break;
	case MEDIA_BUS_FMT_RGB101010_1X30:
		color_format = 0x03;
		break;
	case MEDIA_BUS_FMT_RGB121212_1X36:
		color_format = 0x05;
		break;
	case MEDIA_BUS_FMT_RGB161616_1X48:
		color_format = 0x07;
		break;

	case MEDIA_BUS_FMT_YUV8_1X24:
	case MEDIA_BUS_FMT_UYYVYY8_0_5X24:
		color_format = 0x09;
		break;
	case MEDIA_BUS_FMT_YUV10_1X30:
	case MEDIA_BUS_FMT_UYYVYY10_0_5X30:
		color_format = 0x0B;
		break;
	case MEDIA_BUS_FMT_YUV12_1X36:
	case MEDIA_BUS_FMT_UYYVYY12_0_5X36:
		color_format = 0x0D;
		break;
	case MEDIA_BUS_FMT_YUV16_1X48:
	case MEDIA_BUS_FMT_UYYVYY16_0_5X48:
		color_format = 0x0F;
		break;

	case MEDIA_BUS_FMT_UYVY8_1X16:
		color_format = 0x16;
		break;
	case MEDIA_BUS_FMT_UYVY10_1X20:
		color_format = 0x14;
		break;
	case MEDIA_BUS_FMT_UYVY12_1X24:
		color_format = 0x12;
		break;

	default:
		return;
	}

	val = HDMI_TX_INVID0_INTERNAL_DE_GENERATOR_DISABLE |
		((color_format << HDMI_TX_INVID0_VIDEO_MAPPING_OFFSET) &
		HDMI_TX_INVID0_VIDEO_MAPPING_MASK);
	hdmi_writeb(hdmi, val, HDMI_TX_INVID0);

	/* Enable TX stuffing: When DE is inactive, fix the output data to 0 */
	val = HDMI_TX_INSTUFFING_BDBDATA_STUFFING_ENABLE |
		HDMI_TX_INSTUFFING_RCRDATA_STUFFING_ENABLE |
		HDMI_TX_INSTUFFING_GYDATA_STUFFING_ENABLE;
	hdmi_writeb(hdmi, val, HDMI_TX_INSTUFFING);
	hdmi_writeb(hdmi, 0x0, HDMI_TX_GYDATA0);
	hdmi_writeb(hdmi, 0x0, HDMI_TX_GYDATA1);
	hdmi_writeb(hdmi, 0x0, HDMI_TX_RCRDATA0);
	hdmi_writeb(hdmi, 0x0, HDMI_TX_RCRDATA1);
	hdmi_writeb(hdmi, 0x0, HDMI_TX_BCBDATA0);
	hdmi_writeb(hdmi, 0x0, HDMI_TX_BCBDATA1);
}

static int is_color_space_conversion(struct dw_hdmi *hdmi)
{
	struct hdmi_data_info *hdmi_data = &hdmi->hdmi_data;
	bool is_input_rgb, is_output_rgb;

	is_input_rgb = hdmi_bus_fmt_is_rgb(hdmi_data->enc_in_bus_format);
	is_output_rgb = hdmi_bus_fmt_is_rgb(hdmi_data->enc_out_bus_format);

	return (is_input_rgb != is_output_rgb) ||
	       (is_input_rgb && is_output_rgb && hdmi_data->rgb_limited_range);
}

static int is_color_space_decimation(struct dw_hdmi *hdmi)
{
	if (!hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format))
		return 0;

	if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_in_bus_format) ||
	    hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_in_bus_format))
		return 1;

	return 0;
}

static int is_color_space_interpolation(struct dw_hdmi *hdmi)
{
	if (!hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_in_bus_format))
		return 0;

	if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format) ||
	    hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_out_bus_format))
		return 1;

	return 0;
}

static bool is_csc_needed(struct dw_hdmi *hdmi)
{
	return is_color_space_conversion(hdmi) ||
	       is_color_space_decimation(hdmi) ||
	       is_color_space_interpolation(hdmi);
}

static void dw_hdmi_update_csc_coeffs(struct dw_hdmi *hdmi)
{
	const u16 (*csc_coeff)[3][4] = &csc_coeff_default;
	bool is_input_rgb, is_output_rgb;
	unsigned i;
	u32 csc_scale = 1;

	is_input_rgb = hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_in_bus_format);
	is_output_rgb = hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format);

	if (!is_input_rgb && is_output_rgb) {
		if (hdmi->hdmi_data.enc_out_encoding == V4L2_YCBCR_ENC_601)
			csc_coeff = &csc_coeff_rgb_out_eitu601;
		else
			csc_coeff = &csc_coeff_rgb_out_eitu709;
	} else if (is_input_rgb && !is_output_rgb) {
		if (hdmi->hdmi_data.enc_out_encoding == V4L2_YCBCR_ENC_601)
			csc_coeff = &csc_coeff_rgb_in_eitu601;
		else
			csc_coeff = &csc_coeff_rgb_in_eitu709;
		csc_scale = 0;
	} else if (is_input_rgb && is_output_rgb &&
		   hdmi->hdmi_data.rgb_limited_range) {
		csc_coeff = &csc_coeff_rgb_full_to_rgb_limited;
	}

	/* The CSC registers are sequential, alternating MSB then LSB */
	for (i = 0; i < ARRAY_SIZE(csc_coeff_default[0]); i++) {
		u16 coeff_a = (*csc_coeff)[0][i];
		u16 coeff_b = (*csc_coeff)[1][i];
		u16 coeff_c = (*csc_coeff)[2][i];

		hdmi_writeb(hdmi, coeff_a & 0xff, HDMI_CSC_COEF_A1_LSB + i * 2);
		hdmi_writeb(hdmi, coeff_a >> 8, HDMI_CSC_COEF_A1_MSB + i * 2);
		hdmi_writeb(hdmi, coeff_b & 0xff, HDMI_CSC_COEF_B1_LSB + i * 2);
		hdmi_writeb(hdmi, coeff_b >> 8, HDMI_CSC_COEF_B1_MSB + i * 2);
		hdmi_writeb(hdmi, coeff_c & 0xff, HDMI_CSC_COEF_C1_LSB + i * 2);
		hdmi_writeb(hdmi, coeff_c >> 8, HDMI_CSC_COEF_C1_MSB + i * 2);
	}

	hdmi_modb(hdmi, csc_scale, HDMI_CSC_SCALE_CSCSCALE_MASK,
		  HDMI_CSC_SCALE);
}

static void hdmi_video_csc(struct dw_hdmi *hdmi)
{
	int color_depth = 0;
	int interpolation = HDMI_CSC_CFG_INTMODE_DISABLE;
	int decimation = 0;

	/* YCC422 interpolation to 444 mode */
	if (is_color_space_interpolation(hdmi))
		interpolation = HDMI_CSC_CFG_INTMODE_CHROMA_INT_FORMULA1;
	else if (is_color_space_decimation(hdmi))
		decimation = HDMI_CSC_CFG_DECMODE_CHROMA_INT_FORMULA3;

	switch (hdmi_bus_fmt_color_depth(hdmi->hdmi_data.enc_out_bus_format)) {
	case 8:
		color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_24BPP;
		break;
	case 10:
		color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_30BPP;
		break;
	case 12:
		color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_36BPP;
		break;
	case 16:
		color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_48BPP;
		break;

	default:
		return;
	}

	/* Configure the CSC registers */
	hdmi_writeb(hdmi, interpolation | decimation, HDMI_CSC_CFG);
	hdmi_modb(hdmi, color_depth, HDMI_CSC_SCALE_CSC_COLORDE_PTH_MASK,
		  HDMI_CSC_SCALE);

	dw_hdmi_update_csc_coeffs(hdmi);
}

/*
 * HDMI video packetizer is used to packetize the data.
 * for example, if input is YCC422 mode or repeater is used,
 * data should be repacked this module can be bypassed.
 */
static void hdmi_video_packetize(struct dw_hdmi *hdmi)
{
	unsigned int color_depth = 0;
	unsigned int remap_size = HDMI_VP_REMAP_YCC422_16bit;
	unsigned int output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_PP;
	struct hdmi_data_info *hdmi_data = &hdmi->hdmi_data;
	u8 val, vp_conf;
	u8 clear_gcp_auto = 0;


	if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format) ||
	    hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_out_bus_format) ||
	    hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format)) {
		switch (hdmi_bus_fmt_color_depth(
					hdmi->hdmi_data.enc_out_bus_format)) {
		case 8:
			color_depth = 4;
			output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS;
			clear_gcp_auto = 1;
			break;
		case 10:
			color_depth = 5;
			break;
		case 12:
			color_depth = 6;
			break;
		case 16:
			color_depth = 7;
			break;
		default:
			output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS;
		}
	} else if (hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format)) {
		switch (hdmi_bus_fmt_color_depth(
					hdmi->hdmi_data.enc_out_bus_format)) {
		case 0:
		case 8:
			remap_size = HDMI_VP_REMAP_YCC422_16bit;
			clear_gcp_auto = 1;
			break;
		case 10:
			remap_size = HDMI_VP_REMAP_YCC422_20bit;
			break;
		case 12:
			remap_size = HDMI_VP_REMAP_YCC422_24bit;
			break;

		default:
			return;
		}
		output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422;
	} else {
		return;
	}

	/* set the packetizer registers */
	val = ((color_depth << HDMI_VP_PR_CD_COLOR_DEPTH_OFFSET) &
		HDMI_VP_PR_CD_COLOR_DEPTH_MASK) |
		((hdmi_data->pix_repet_factor <<
		HDMI_VP_PR_CD_DESIRED_PR_FACTOR_OFFSET) &
		HDMI_VP_PR_CD_DESIRED_PR_FACTOR_MASK);
	hdmi_writeb(hdmi, val, HDMI_VP_PR_CD);

	/* HDMI1.4b specification section 6.5.3:
	 * Source shall only send GCPs with non-zero CD to sinks
	 * that indicate support for Deep Color.
	 * GCP only transmit CD and do not handle AVMUTE, PP norDefault_Phase (yet).
	 * Disable Auto GCP when 24-bit color for sinks that not support Deep Color.
	 */
	val = hdmi_readb(hdmi, HDMI_FC_DATAUTO3);
	if (clear_gcp_auto == 1)
		val &= ~HDMI_FC_DATAUTO3_GCP_AUTO;
	else
		val |= HDMI_FC_DATAUTO3_GCP_AUTO;
	hdmi_writeb(hdmi, val, HDMI_FC_DATAUTO3);

	hdmi_modb(hdmi, HDMI_VP_STUFF_PR_STUFFING_STUFFING_MODE,
		  HDMI_VP_STUFF_PR_STUFFING_MASK, HDMI_VP_STUFF);

	/* Data from pixel repeater block */
	if (hdmi_data->pix_repet_factor > 1) {
		vp_conf = HDMI_VP_CONF_PR_EN_ENABLE |
			  HDMI_VP_CONF_BYPASS_SELECT_PIX_REPEATER;
	} else { /* data from packetizer block */
		vp_conf = HDMI_VP_CONF_PR_EN_DISABLE |
			  HDMI_VP_CONF_BYPASS_SELECT_VID_PACKETIZER;
	}

	hdmi_modb(hdmi, vp_conf,
		  HDMI_VP_CONF_PR_EN_MASK |
		  HDMI_VP_CONF_BYPASS_SELECT_MASK, HDMI_VP_CONF);

	hdmi_modb(hdmi, 1 << HDMI_VP_STUFF_IDEFAULT_PHASE_OFFSET,
		  HDMI_VP_STUFF_IDEFAULT_PHASE_MASK, HDMI_VP_STUFF);

	hdmi_writeb(hdmi, remap_size, HDMI_VP_REMAP);

	if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_PP) {
		vp_conf = HDMI_VP_CONF_BYPASS_EN_DISABLE |
			  HDMI_VP_CONF_PP_EN_ENABLE |
			  HDMI_VP_CONF_YCC422_EN_DISABLE;
	} else if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422) {
		vp_conf = HDMI_VP_CONF_BYPASS_EN_DISABLE |
			  HDMI_VP_CONF_PP_EN_DISABLE |
			  HDMI_VP_CONF_YCC422_EN_ENABLE;
	} else if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS) {
		vp_conf = HDMI_VP_CONF_BYPASS_EN_ENABLE |
			  HDMI_VP_CONF_PP_EN_DISABLE |
			  HDMI_VP_CONF_YCC422_EN_DISABLE;
	} else {
		return;
	}

	hdmi_modb(hdmi, vp_conf,
		  HDMI_VP_CONF_BYPASS_EN_MASK | HDMI_VP_CONF_PP_EN_ENMASK |
		  HDMI_VP_CONF_YCC422_EN_MASK, HDMI_VP_CONF);

	hdmi_modb(hdmi, HDMI_VP_STUFF_PP_STUFFING_STUFFING_MODE |
			HDMI_VP_STUFF_YCC422_STUFFING_STUFFING_MODE,
		  HDMI_VP_STUFF_PP_STUFFING_MASK |
		  HDMI_VP_STUFF_YCC422_STUFFING_MASK, HDMI_VP_STUFF);

	hdmi_modb(hdmi, output_select, HDMI_VP_CONF_OUTPUT_SELECTOR_MASK,
		  HDMI_VP_CONF);
}

/* -----------------------------------------------------------------------------
 * Synopsys PHY Handling
 */

static inline void hdmi_phy_test_clear(struct dw_hdmi *hdmi,
				       unsigned char bit)
{
	hdmi_modb(hdmi, bit << HDMI_PHY_TST0_TSTCLR_OFFSET,
		  HDMI_PHY_TST0_TSTCLR_MASK, HDMI_PHY_TST0);
}

static bool hdmi_phy_wait_i2c_done(struct dw_hdmi *hdmi, int msec)
{
	u32 val;

	while ((val = hdmi_readb(hdmi, HDMI_IH_I2CMPHY_STAT0) & 0x3) == 0) {
		if (msec-- == 0)
			return false;
		udelay(1000);
	}
	hdmi_writeb(hdmi, val, HDMI_IH_I2CMPHY_STAT0);

	return true;
}

void dw_hdmi_phy_i2c_write(struct dw_hdmi *hdmi, unsigned short data,
			   unsigned char addr)
{
	hdmi_writeb(hdmi, 0xFF, HDMI_IH_I2CMPHY_STAT0);
	hdmi_writeb(hdmi, addr, HDMI_PHY_I2CM_ADDRESS_ADDR);
	hdmi_writeb(hdmi, (unsigned char)(data >> 8),
		    HDMI_PHY_I2CM_DATAO_1_ADDR);
	hdmi_writeb(hdmi, (unsigned char)(data >> 0),
		    HDMI_PHY_I2CM_DATAO_0_ADDR);
	hdmi_writeb(hdmi, HDMI_PHY_I2CM_OPERATION_ADDR_WRITE,
		    HDMI_PHY_I2CM_OPERATION_ADDR);
	hdmi_phy_wait_i2c_done(hdmi, 1000);
}
EXPORT_SYMBOL_GPL(dw_hdmi_phy_i2c_write);

/* Filter out invalid setups to avoid configuring SCDC and scrambling */
static bool dw_hdmi_support_scdc(struct dw_hdmi *hdmi,
				 const struct drm_display_info *display)
{
	/* Completely disable SCDC support for older controllers */
	if (hdmi->version < 0x200a)
		return false;

	/* Disable if no DDC bus */
	if (!hdmi->ddc)
		return false;

	/* Disable if SCDC is not supported, or if an HF-VSDB block is absent */
	if (!display->hdmi.scdc.supported ||
	    !display->hdmi.scdc.scrambling.supported)
		return false;

	/*
	 * Disable if display only support low TMDS rates and scrambling
	 * for low rates is not supported either
	 */
	if (!display->hdmi.scdc.scrambling.low_rates &&
	    display->max_tmds_clock <= 340000)
		return false;

	return true;
}

/*
 * HDMI2.0 Specifies the following procedure for High TMDS Bit Rates:
 * - The Source shall suspend transmission of the TMDS clock and data
 * - The Source shall write to the TMDS_Bit_Clock_Ratio bit to change it
 * from a 0 to a 1 or from a 1 to a 0
 * - The Source shall allow a minimum of 1 ms and a maximum of 100 ms from
 * the time the TMDS_Bit_Clock_Ratio bit is written until resuming
 * transmission of TMDS clock and data
 *
 * To respect the 100ms maximum delay, the dw_hdmi_set_high_tmds_clock_ratio()
 * helper should called right before enabling the TMDS Clock and Data in
 * the PHY configuration callback.
 */
void dw_hdmi_set_high_tmds_clock_ratio(struct dw_hdmi *hdmi,
				       const struct drm_display_info *display)
{
	unsigned long mtmdsclock = hdmi->hdmi_data.video_mode.mtmdsclock;

	/* Control for TMDS Bit Period/TMDS Clock-Period Ratio */
	if (dw_hdmi_support_scdc(hdmi, display)) {
		if (mtmdsclock > HDMI14_MAX_TMDSCLK)
			drm_scdc_set_high_tmds_clock_ratio(hdmi->curr_conn, 1);
		else
			drm_scdc_set_high_tmds_clock_ratio(hdmi->curr_conn, 0);
	}
}
EXPORT_SYMBOL_GPL(dw_hdmi_set_high_tmds_clock_ratio);

static void dw_hdmi_phy_enable_powerdown(struct dw_hdmi *hdmi, bool enable)
{
	hdmi_mask_writeb(hdmi, !enable, HDMI_PHY_CONF0,
			 HDMI_PHY_CONF0_PDZ_OFFSET,
			 HDMI_PHY_CONF0_PDZ_MASK);
}

static void dw_hdmi_phy_enable_tmds(struct dw_hdmi *hdmi, u8 enable)
{
	hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
			 HDMI_PHY_CONF0_ENTMDS_OFFSET,
			 HDMI_PHY_CONF0_ENTMDS_MASK);
}

static void dw_hdmi_phy_enable_svsret(struct dw_hdmi *hdmi, u8 enable)
{
	hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
			 HDMI_PHY_CONF0_SVSRET_OFFSET,
			 HDMI_PHY_CONF0_SVSRET_MASK);
}

void dw_hdmi_phy_gen2_pddq(struct dw_hdmi *hdmi, u8 enable)
{
	hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
			 HDMI_PHY_CONF0_GEN2_PDDQ_OFFSET,
			 HDMI_PHY_CONF0_GEN2_PDDQ_MASK);
}
EXPORT_SYMBOL_GPL(dw_hdmi_phy_gen2_pddq);

void dw_hdmi_phy_gen2_txpwron(struct dw_hdmi *hdmi, u8 enable)
{
	hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
			 HDMI_PHY_CONF0_GEN2_TXPWRON_OFFSET,
			 HDMI_PHY_CONF0_GEN2_TXPWRON_MASK);
}
EXPORT_SYMBOL_GPL(dw_hdmi_phy_gen2_txpwron);

static void dw_hdmi_phy_sel_data_en_pol(struct dw_hdmi *hdmi, u8 enable)
{
	hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
			 HDMI_PHY_CONF0_SELDATAENPOL_OFFSET,
			 HDMI_PHY_CONF0_SELDATAENPOL_MASK);
}

static void dw_hdmi_phy_sel_interface_control(struct dw_hdmi *hdmi, u8 enable)
{
	hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
			 HDMI_PHY_CONF0_SELDIPIF_OFFSET,
			 HDMI_PHY_CONF0_SELDIPIF_MASK);
}

void dw_hdmi_phy_gen1_reset(struct dw_hdmi *hdmi)
{
	/* PHY reset. The reset signal is active low on Gen1 PHYs. */
	hdmi_writeb(hdmi, 0, HDMI_MC_PHYRSTZ);
	hdmi_writeb(hdmi, HDMI_MC_PHYRSTZ_PHYRSTZ, HDMI_MC_PHYRSTZ);
}
EXPORT_SYMBOL_GPL(dw_hdmi_phy_gen1_reset);

void dw_hdmi_phy_gen2_reset(struct dw_hdmi *hdmi)
{
	/* PHY reset. The reset signal is active high on Gen2 PHYs. */
	hdmi_writeb(hdmi, HDMI_MC_PHYRSTZ_PHYRSTZ, HDMI_MC_PHYRSTZ);
	hdmi_writeb(hdmi, 0, HDMI_MC_PHYRSTZ);
}
EXPORT_SYMBOL_GPL(dw_hdmi_phy_gen2_reset);

void dw_hdmi_phy_i2c_set_addr(struct dw_hdmi *hdmi, u8 address)
{
	hdmi_phy_test_clear(hdmi, 1);
	hdmi_writeb(hdmi, address, HDMI_PHY_I2CM_SLAVE_ADDR);
	hdmi_phy_test_clear(hdmi, 0);
}
EXPORT_SYMBOL_GPL(dw_hdmi_phy_i2c_set_addr);

static void dw_hdmi_phy_power_off(struct dw_hdmi *hdmi)
{
	const struct dw_hdmi_phy_data *phy = hdmi->phy.data;
	unsigned int i;
	u16 val;

	if (phy->gen == 1) {
		dw_hdmi_phy_enable_tmds(hdmi, 0);
		dw_hdmi_phy_enable_powerdown(hdmi, true);
		return;
	}

	dw_hdmi_phy_gen2_txpwron(hdmi, 0);

	/*
	 * Wait for TX_PHY_LOCK to be deasserted to indicate that the PHY went
	 * to low power mode.
	 */
	for (i = 0; i < 5; ++i) {
		val = hdmi_readb(hdmi, HDMI_PHY_STAT0);
		if (!(val & HDMI_PHY_TX_PHY_LOCK))
			break;

		usleep_range(1000, 2000);
	}

	if (val & HDMI_PHY_TX_PHY_LOCK)
		dev_warn(hdmi->dev, "PHY failed to power down\n");
	else
		dev_dbg(hdmi->dev, "PHY powered down in %u iterations\n", i);

	dw_hdmi_phy_gen2_pddq(hdmi, 1);
}

static int dw_hdmi_phy_power_on(struct dw_hdmi *hdmi)
{
	const struct dw_hdmi_phy_data *phy = hdmi->phy.data;
	unsigned int i;
	u8 val;

	if (phy->gen == 1) {
		dw_hdmi_phy_enable_powerdown(hdmi, false);

		/* Toggle TMDS enable. */
		dw_hdmi_phy_enable_tmds(hdmi, 0);
		dw_hdmi_phy_enable_tmds(hdmi, 1);
		return 0;
	}

	dw_hdmi_phy_gen2_txpwron(hdmi, 1);
	dw_hdmi_phy_gen2_pddq(hdmi, 0);

	/* Wait for PHY PLL lock */
	for (i = 0; i < 5; ++i) {
		val = hdmi_readb(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_TX_PHY_LOCK;
		if (val)
			break;

		usleep_range(1000, 2000);
	}

	if (!val) {
		dev_err(hdmi->dev, "PHY PLL failed to lock\n");
		return -ETIMEDOUT;
	}

	dev_dbg(hdmi->dev, "PHY PLL locked %u iterations\n", i);
	return 0;
}

/*
 * PHY configuration function for the DWC HDMI 3D TX PHY. Based on the available
 * information the DWC MHL PHY has the same register layout and is thus also
 * supported by this function.
 */
static int hdmi_phy_configure_dwc_hdmi_3d_tx(struct dw_hdmi *hdmi,
		const struct dw_hdmi_plat_data *pdata,
		unsigned long mpixelclock)
{
	const struct dw_hdmi_mpll_config *mpll_config = pdata->mpll_cfg;
	const struct dw_hdmi_curr_ctrl *curr_ctrl = pdata->cur_ctr;
	const struct dw_hdmi_phy_config *phy_config = pdata->phy_config;

	/* TOFIX Will need 420 specific PHY configuration tables */

	/* PLL/MPLL Cfg - always match on final entry */
	for (; mpll_config->mpixelclock != ~0UL; mpll_config++)
		if (mpixelclock <= mpll_config->mpixelclock)
			break;

	for (; curr_ctrl->mpixelclock != ~0UL; curr_ctrl++)
		if (mpixelclock <= curr_ctrl->mpixelclock)
			break;

	for (; phy_config->mpixelclock != ~0UL; phy_config++)
		if (mpixelclock <= phy_config->mpixelclock)
			break;

	if (mpll_config->mpixelclock == ~0UL ||
	    curr_ctrl->mpixelclock == ~0UL ||
	    phy_config->mpixelclock == ~0UL)
		return -EINVAL;

	dw_hdmi_phy_i2c_write(hdmi, mpll_config->res[0].cpce,
			      HDMI_3D_TX_PHY_CPCE_CTRL);
	dw_hdmi_phy_i2c_write(hdmi, mpll_config->res[0].gmp,
			      HDMI_3D_TX_PHY_GMPCTRL);
	dw_hdmi_phy_i2c_write(hdmi, curr_ctrl->curr[0],
			      HDMI_3D_TX_PHY_CURRCTRL);

	dw_hdmi_phy_i2c_write(hdmi, 0, HDMI_3D_TX_PHY_PLLPHBYCTRL);
	dw_hdmi_phy_i2c_write(hdmi, HDMI_3D_TX_PHY_MSM_CTRL_CKO_SEL_FB_CLK,
			      HDMI_3D_TX_PHY_MSM_CTRL);

	dw_hdmi_phy_i2c_write(hdmi, phy_config->term, HDMI_3D_TX_PHY_TXTERM);
	dw_hdmi_phy_i2c_write(hdmi, phy_config->sym_ctr,
			      HDMI_3D_TX_PHY_CKSYMTXCTRL);
	dw_hdmi_phy_i2c_write(hdmi, phy_config->vlev_ctr,
			      HDMI_3D_TX_PHY_VLEVCTRL);

	/* Override and disable clock termination. */
	dw_hdmi_phy_i2c_write(hdmi, HDMI_3D_TX_PHY_CKCALCTRL_OVERRIDE,
			      HDMI_3D_TX_PHY_CKCALCTRL);

	return 0;
}

static int hdmi_phy_configure(struct dw_hdmi *hdmi,
			      const struct drm_display_info *display)
{
	const struct dw_hdmi_phy_data *phy = hdmi->phy.data;
	const struct dw_hdmi_plat_data *pdata = hdmi->plat_data;
	unsigned long mpixelclock = hdmi->hdmi_data.video_mode.mpixelclock;
	unsigned long mtmdsclock = hdmi->hdmi_data.video_mode.mtmdsclock;
	int ret;

	dw_hdmi_phy_power_off(hdmi);

	dw_hdmi_set_high_tmds_clock_ratio(hdmi, display);

	/* Leave low power consumption mode by asserting SVSRET. */
	if (phy->has_svsret)
		dw_hdmi_phy_enable_svsret(hdmi, 1);

	dw_hdmi_phy_gen2_reset(hdmi);

	hdmi_writeb(hdmi, HDMI_MC_HEACPHY_RST_ASSERT, HDMI_MC_HEACPHY_RST);

	dw_hdmi_phy_i2c_set_addr(hdmi, HDMI_PHY_I2CM_SLAVE_ADDR_PHY_GEN2);

	/* Write to the PHY as configured by the platform */
	if (pdata->configure_phy)
		ret = pdata->configure_phy(hdmi, pdata->priv_data, mpixelclock);
	else
		ret = phy->configure(hdmi, pdata, mpixelclock);
	if (ret) {
		dev_err(hdmi->dev, "PHY configuration failed (clock %lu)\n",
			mpixelclock);
		return ret;
	}

	/* Wait for resuming transmission of TMDS clock and data */
	if (mtmdsclock > HDMI14_MAX_TMDSCLK)
		msleep(100);

	return dw_hdmi_phy_power_on(hdmi);
}

static int dw_hdmi_phy_init(struct dw_hdmi *hdmi, void *data,
			    const struct drm_display_info *display,
			    const struct drm_display_mode *mode)
{
	int i, ret;

	/* HDMI Phy spec says to do the phy initialization sequence twice */
	for (i = 0; i < 2; i++) {
		dw_hdmi_phy_sel_data_en_pol(hdmi, 1);
		dw_hdmi_phy_sel_interface_control(hdmi, 0);

		ret = hdmi_phy_configure(hdmi, display);
		if (ret)
			return ret;
	}

	return 0;
}

static void dw_hdmi_phy_disable(struct dw_hdmi *hdmi, void *data)
{
	dw_hdmi_phy_power_off(hdmi);
}

enum drm_connector_status dw_hdmi_phy_read_hpd(struct dw_hdmi *hdmi,
					       void *data)
{
	return hdmi_readb(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_HPD ?
		connector_status_connected : connector_status_disconnected;
}
EXPORT_SYMBOL_GPL(dw_hdmi_phy_read_hpd);

void dw_hdmi_phy_update_hpd(struct dw_hdmi *hdmi, void *data,
			    bool force, bool disabled, bool rxsense)
{
	u8 old_mask = hdmi->phy_mask;

	if (force || disabled || !rxsense)
		hdmi->phy_mask |= HDMI_PHY_RX_SENSE;
	else
		hdmi->phy_mask &= ~HDMI_PHY_RX_SENSE;

	if (old_mask != hdmi->phy_mask)
		hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0);
}
EXPORT_SYMBOL_GPL(dw_hdmi_phy_update_hpd);

void dw_hdmi_phy_setup_hpd(struct dw_hdmi *hdmi, void *data)
{
	/*
	 * Configure the PHY RX SENSE and HPD interrupts polarities and clear
	 * any pending interrupt.
	 */
	hdmi_writeb(hdmi, HDMI_PHY_HPD | HDMI_PHY_RX_SENSE, HDMI_PHY_POL0);
	hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE,
		    HDMI_IH_PHY_STAT0);

	/* Enable cable hot plug irq. */
	hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0);

	/* Clear and unmute interrupts. */
	hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE,
		    HDMI_IH_PHY_STAT0);
	hdmi_writeb(hdmi, ~(HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE),
		    HDMI_IH_MUTE_PHY_STAT0);
}
EXPORT_SYMBOL_GPL(dw_hdmi_phy_setup_hpd);

static const struct dw_hdmi_phy_ops dw_hdmi_synopsys_phy_ops = {
	.init = dw_hdmi_phy_init,
	.disable = dw_hdmi_phy_disable,
	.read_hpd = dw_hdmi_phy_read_hpd,
	.update_hpd = dw_hdmi_phy_update_hpd,
	.setup_hpd = dw_hdmi_phy_setup_hpd,
};

/* -----------------------------------------------------------------------------
 * HDMI TX Setup
 */

static void hdmi_tx_hdcp_config(struct dw_hdmi *hdmi)
{
	u8 de;

	if (hdmi->hdmi_data.video_mode.mdataenablepolarity)
		de = HDMI_A_VIDPOLCFG_DATAENPOL_ACTIVE_HIGH;
	else
		de = HDMI_A_VIDPOLCFG_DATAENPOL_ACTIVE_LOW;

	/* disable rx detect */
	hdmi_modb(hdmi, HDMI_A_HDCPCFG0_RXDETECT_DISABLE,
		  HDMI_A_HDCPCFG0_RXDETECT_MASK, HDMI_A_HDCPCFG0);

	hdmi_modb(hdmi, de, HDMI_A_VIDPOLCFG_DATAENPOL_MASK, HDMI_A_VIDPOLCFG);

	hdmi_modb(hdmi, HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_DISABLE,
		  HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_MASK, HDMI_A_HDCPCFG1);
}

static void hdmi_config_AVI(struct dw_hdmi *hdmi,
			    const struct drm_connector *connector,
			    const struct drm_display_mode *mode)
{
	struct hdmi_avi_infoframe frame;
	u8 val;

	/* Initialise info frame from DRM mode */
	drm_hdmi_avi_infoframe_from_display_mode(&frame, connector, mode);

	if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format)) {
		drm_hdmi_avi_infoframe_quant_range(&frame, connector, mode,
						   hdmi->hdmi_data.rgb_limited_range ?
						   HDMI_QUANTIZATION_RANGE_LIMITED :
						   HDMI_QUANTIZATION_RANGE_FULL);
	} else {
		frame.quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT;
		frame.ycc_quantization_range =
			HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
	}

	if (hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_out_bus_format))
		frame.colorspace = HDMI_COLORSPACE_YUV444;
	else if (hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format))
		frame.colorspace = HDMI_COLORSPACE_YUV422;
	else if (hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format))
		frame.colorspace = HDMI_COLORSPACE_YUV420;
	else
		frame.colorspace = HDMI_COLORSPACE_RGB;

	/* Set up colorimetry */
	if (!hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format)) {
		switch (hdmi->hdmi_data.enc_out_encoding) {
		case V4L2_YCBCR_ENC_601:
			if (hdmi->hdmi_data.enc_in_encoding == V4L2_YCBCR_ENC_XV601)
				frame.colorimetry = HDMI_COLORIMETRY_EXTENDED;
			else
				frame.colorimetry = HDMI_COLORIMETRY_ITU_601;
			frame.extended_colorimetry =
					HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
			break;
		case V4L2_YCBCR_ENC_709:
			if (hdmi->hdmi_data.enc_in_encoding == V4L2_YCBCR_ENC_XV709)
				frame.colorimetry = HDMI_COLORIMETRY_EXTENDED;
			else
				frame.colorimetry = HDMI_COLORIMETRY_ITU_709;
			frame.extended_colorimetry =
					HDMI_EXTENDED_COLORIMETRY_XV_YCC_709;
			break;
		default: /* Carries no data */
			frame.colorimetry = HDMI_COLORIMETRY_ITU_601;
			frame.extended_colorimetry =
					HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
			break;
		}
	} else {
		frame.colorimetry = HDMI_COLORIMETRY_NONE;
		frame.extended_colorimetry =
			HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
	}

	/*
	 * The Designware IP uses a different byte format from standard
	 * AVI info frames, though generally the bits are in the correct
	 * bytes.
	 */

	/*
	 * AVI data byte 1 differences: Colorspace in bits 0,1 rather than 5,6,
	 * scan info in bits 4,5 rather than 0,1 and active aspect present in
	 * bit 6 rather than 4.
	 */
	val = (frame.scan_mode & 3) << 4 | (frame.colorspace & 3);
	if (frame.active_aspect & 15)
		val |= HDMI_FC_AVICONF0_ACTIVE_FMT_INFO_PRESENT;
	if (frame.top_bar || frame.bottom_bar)
		val |= HDMI_FC_AVICONF0_BAR_DATA_HORIZ_BAR;
	if (frame.left_bar || frame.right_bar)
		val |= HDMI_FC_AVICONF0_BAR_DATA_VERT_BAR;
	hdmi_writeb(hdmi, val, HDMI_FC_AVICONF0);

	/* AVI data byte 2 differences: none */
	val = ((frame.colorimetry & 0x3) << 6) |
	      ((frame.picture_aspect & 0x3) << 4) |
	      (frame.active_aspect & 0xf);
	hdmi_writeb(hdmi, val, HDMI_FC_AVICONF1);

	/* AVI data byte 3 differences: none */
	val = ((frame.extended_colorimetry & 0x7) << 4) |
	      ((frame.quantization_range & 0x3) << 2) |
	      (frame.nups & 0x3);
	if (frame.itc)
		val |= HDMI_FC_AVICONF2_IT_CONTENT_VALID;
	hdmi_writeb(hdmi, val, HDMI_FC_AVICONF2);

	/* AVI data byte 4 differences: none */
	val = frame.video_code & 0x7f;
	hdmi_writeb(hdmi, val, HDMI_FC_AVIVID);

	/* AVI Data Byte 5- set up input and output pixel repetition */
	val = (((hdmi->hdmi_data.video_mode.mpixelrepetitioninput + 1) <<
		HDMI_FC_PRCONF_INCOMING_PR_FACTOR_OFFSET) &
		HDMI_FC_PRCONF_INCOMING_PR_FACTOR_MASK) |
		((hdmi->hdmi_data.video_mode.mpixelrepetitionoutput <<
		HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_OFFSET) &
		HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_MASK);
	hdmi_writeb(hdmi, val, HDMI_FC_PRCONF);

	/*
	 * AVI data byte 5 differences: content type in 0,1 rather than 4,5,
	 * ycc range in bits 2,3 rather than 6,7
	 */
	val = ((frame.ycc_quantization_range & 0x3) << 2) |
	      (frame.content_type & 0x3);
	hdmi_writeb(hdmi, val, HDMI_FC_AVICONF3);

	/* AVI Data Bytes 6-13 */
	hdmi_writeb(hdmi, frame.top_bar & 0xff, HDMI_FC_AVIETB0);
	hdmi_writeb(hdmi, (frame.top_bar >> 8) & 0xff, HDMI_FC_AVIETB1);
	hdmi_writeb(hdmi, frame.bottom_bar & 0xff, HDMI_FC_AVISBB0);
	hdmi_writeb(hdmi, (frame.bottom_bar >> 8) & 0xff, HDMI_FC_AVISBB1);
	hdmi_writeb(hdmi, frame.left_bar & 0xff, HDMI_FC_AVIELB0);
	hdmi_writeb(hdmi, (frame.left_bar >> 8) & 0xff, HDMI_FC_AVIELB1);
	hdmi_writeb(hdmi, frame.right_bar & 0xff, HDMI_FC_AVISRB0);
	hdmi_writeb(hdmi, (frame.right_bar >> 8) & 0xff, HDMI_FC_AVISRB1);
}

static void hdmi_config_vendor_specific_infoframe(struct dw_hdmi *hdmi,
						  const struct drm_connector *connector,
						  const struct drm_display_mode *mode)
{
	struct hdmi_vendor_infoframe frame;
	u8 buffer[10];
	ssize_t err;

	err = drm_hdmi_vendor_infoframe_from_display_mode(&frame, connector,
							  mode);
	if (err < 0)
		/*
		 * Going into that statement does not means vendor infoframe
		 * fails. It just informed us that vendor infoframe is not
		 * needed for the selected mode. Only 4k or stereoscopic 3D
		 * mode requires vendor infoframe. So just simply return.
		 */
		return;

	err = hdmi_vendor_infoframe_pack(&frame, buffer, sizeof(buffer));
	if (err < 0) {
		dev_err(hdmi->dev, "Failed to pack vendor infoframe: %zd\n",
			err);
		return;
	}
	hdmi_mask_writeb(hdmi, 0, HDMI_FC_DATAUTO0, HDMI_FC_DATAUTO0_VSD_OFFSET,
			HDMI_FC_DATAUTO0_VSD_MASK);

	/* Set the length of HDMI vendor specific InfoFrame payload */
	hdmi_writeb(hdmi, buffer[2], HDMI_FC_VSDSIZE);

	/* Set 24bit IEEE Registration Identifier */
	hdmi_writeb(hdmi, buffer[4], HDMI_FC_VSDIEEEID0);
	hdmi_writeb(hdmi, buffer[5], HDMI_FC_VSDIEEEID1);
	hdmi_writeb(hdmi, buffer[6], HDMI_FC_VSDIEEEID2);

	/* Set HDMI_Video_Format and HDMI_VIC/3D_Structure */
	hdmi_writeb(hdmi, buffer[7], HDMI_FC_VSDPAYLOAD0);
	hdmi_writeb(hdmi, buffer[8], HDMI_FC_VSDPAYLOAD1);

	if (frame.s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF)
		hdmi_writeb(hdmi, buffer[9], HDMI_FC_VSDPAYLOAD2);

	/* Packet frame interpolation */
	hdmi_writeb(hdmi, 1, HDMI_FC_DATAUTO1);

	/* Auto packets per frame and line spacing */
	hdmi_writeb(hdmi, 0x11, HDMI_FC_DATAUTO2);

	/* Configures the Frame Composer On RDRB mode */
	hdmi_mask_writeb(hdmi, 1, HDMI_FC_DATAUTO0, HDMI_FC_DATAUTO0_VSD_OFFSET,
			HDMI_FC_DATAUTO0_VSD_MASK);
}

static void hdmi_config_drm_infoframe(struct dw_hdmi *hdmi,
				      const struct drm_connector *connector)
{
	const struct drm_connector_state *conn_state = connector->state;
	struct hdmi_drm_infoframe frame;
	u8 buffer[30];
	ssize_t err;
	int i;

	if (!hdmi->plat_data->use_drm_infoframe)
		return;

	hdmi_modb(hdmi, HDMI_FC_PACKET_TX_EN_DRM_DISABLE,
		  HDMI_FC_PACKET_TX_EN_DRM_MASK, HDMI_FC_PACKET_TX_EN);

	err = drm_hdmi_infoframe_set_hdr_metadata(&frame, conn_state);
	if (err < 0)
		return;

	err = hdmi_drm_infoframe_pack(&frame, buffer, sizeof(buffer));
	if (err < 0) {
		dev_err(hdmi->dev, "Failed to pack drm infoframe: %zd\n", err);
		return;
	}

	hdmi_writeb(hdmi, frame.version, HDMI_FC_DRM_HB0);
	hdmi_writeb(hdmi, frame.length, HDMI_FC_DRM_HB1);

	for (i = 0; i < frame.length; i++)
		hdmi_writeb(hdmi, buffer[4 + i], HDMI_FC_DRM_PB0 + i);

	hdmi_writeb(hdmi, 1, HDMI_FC_DRM_UP);
	hdmi_modb(hdmi, HDMI_FC_PACKET_TX_EN_DRM_ENABLE,
		  HDMI_FC_PACKET_TX_EN_DRM_MASK, HDMI_FC_PACKET_TX_EN);
}

static void hdmi_av_composer(struct dw_hdmi *hdmi,
			     const struct drm_display_info *display,
			     const struct drm_display_mode *mode)
{
	u8 inv_val, bytes;
	const struct drm_hdmi_info *hdmi_info = &display->hdmi;
	struct hdmi_vmode *vmode = &hdmi->hdmi_data.video_mode;
	int hblank, vblank, h_de_hs, v_de_vs, hsync_len, vsync_len;
	unsigned int vdisplay, hdisplay;

	vmode->mpixelclock = mode->clock * 1000;

	dev_dbg(hdmi->dev, "final pixclk = %d\n", vmode->mpixelclock);

	vmode->mtmdsclock = vmode->mpixelclock;

	if (!hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format)) {
		switch (hdmi_bus_fmt_color_depth(
				hdmi->hdmi_data.enc_out_bus_format)) {
		case 16:
			vmode->mtmdsclock = vmode->mpixelclock * 2;
			break;
		case 12:
			vmode->mtmdsclock = vmode->mpixelclock * 3 / 2;
			break;
		case 10:
			vmode->mtmdsclock = vmode->mpixelclock * 5 / 4;
			break;
		}
	}

	if (hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format))
		vmode->mtmdsclock /= 2;

	dev_dbg(hdmi->dev, "final tmdsclock = %d\n", vmode->mtmdsclock);

	/* Set up HDMI_FC_INVIDCONF */
	inv_val = (hdmi->hdmi_data.hdcp_enable ||
		   (dw_hdmi_support_scdc(hdmi, display) &&
		    (vmode->mtmdsclock > HDMI14_MAX_TMDSCLK ||
		     hdmi_info->scdc.scrambling.low_rates)) ?
		HDMI_FC_INVIDCONF_HDCP_KEEPOUT_ACTIVE :
		HDMI_FC_INVIDCONF_HDCP_KEEPOUT_INACTIVE);

	inv_val |= mode->flags & DRM_MODE_FLAG_PVSYNC ?
		HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_HIGH :
		HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_LOW;

	inv_val |= mode->flags & DRM_MODE_FLAG_PHSYNC ?
		HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_HIGH :
		HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_LOW;

	inv_val |= (vmode->mdataenablepolarity ?
		HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_HIGH :
		HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_LOW);

	if (hdmi->vic == 39)
		inv_val |= HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH;
	else
		inv_val |= mode->flags & DRM_MODE_FLAG_INTERLACE ?
			HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH :
			HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_LOW;

	inv_val |= mode->flags & DRM_MODE_FLAG_INTERLACE ?
		HDMI_FC_INVIDCONF_IN_I_P_INTERLACED :
		HDMI_FC_INVIDCONF_IN_I_P_PROGRESSIVE;

	inv_val |= hdmi->sink_is_hdmi ?
		HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE :
		HDMI_FC_INVIDCONF_DVI_MODEZ_DVI_MODE;

	hdmi_writeb(hdmi, inv_val, HDMI_FC_INVIDCONF);

	hdisplay = mode->hdisplay;
	hblank = mode->htotal - mode->hdisplay;
	h_de_hs = mode->hsync_start - mode->hdisplay;
	hsync_len = mode->hsync_end - mode->hsync_start;

	/*
	 * When we're setting a YCbCr420 mode, we need
	 * to adjust the horizontal timing to suit.
	 */
	if (hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format)) {
		hdisplay /= 2;
		hblank /= 2;
		h_de_hs /= 2;
		hsync_len /= 2;
	}

	vdisplay = mode->vdisplay;
	vblank = mode->vtotal - mode->vdisplay;
	v_de_vs = mode->vsync_start - mode->vdisplay;
	vsync_len = mode->vsync_end - mode->vsync_start;

	/*
	 * When we're setting an interlaced mode, we need
	 * to adjust the vertical timing to suit.
	 */
	if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
		vdisplay /= 2;
		vblank /= 2;
		v_de_vs /= 2;
		vsync_len /= 2;
	}

	/* Scrambling Control */
	if (dw_hdmi_support_scdc(hdmi, display)) {
		if (vmode->mtmdsclock > HDMI14_MAX_TMDSCLK ||
		    hdmi_info->scdc.scrambling.low_rates) {
			/*
			 * HDMI2.0 Specifies the following procedure:
			 * After the Source Device has determined that
			 * SCDC_Present is set (=1), the Source Device should
			 * write the accurate Version of the Source Device
			 * to the Source Version field in the SCDCS.
			 * Source Devices compliant shall set the
			 * Source Version = 1.
			 */
			drm_scdc_readb(hdmi->ddc, SCDC_SINK_VERSION,
				       &bytes);
			drm_scdc_writeb(hdmi->ddc, SCDC_SOURCE_VERSION,
				min_t(u8, bytes, SCDC_MIN_SOURCE_VERSION));

			/* Enabled Scrambling in the Sink */
			drm_scdc_set_scrambling(hdmi->curr_conn, 1);

			/*
			 * To activate the scrambler feature, you must ensure
			 * that the quasi-static configuration bit
			 * fc_invidconf.HDCP_keepout is set at configuration
			 * time, before the required mc_swrstzreq.tmdsswrst_req
			 * reset request is issued.
			 */
			hdmi_writeb(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ,
				    HDMI_MC_SWRSTZ);
			hdmi_writeb(hdmi, 1, HDMI_FC_SCRAMBLER_CTRL);
		} else {
			hdmi_writeb(hdmi, 0, HDMI_FC_SCRAMBLER_CTRL);
			hdmi_writeb(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ,
				    HDMI_MC_SWRSTZ);
			drm_scdc_set_scrambling(hdmi->curr_conn, 0);
		}
	}

	/* Set up horizontal active pixel width */
	hdmi_writeb(hdmi, hdisplay >> 8, HDMI_FC_INHACTV1);
	hdmi_writeb(hdmi, hdisplay, HDMI_FC_INHACTV0);

	/* Set up vertical active lines */
	hdmi_writeb(hdmi, vdisplay >> 8, HDMI_FC_INVACTV1);
	hdmi_writeb(hdmi, vdisplay, HDMI_FC_INVACTV0);

	/* Set up horizontal blanking pixel region width */
	hdmi_writeb(hdmi, hblank >> 8, HDMI_FC_INHBLANK1);
	hdmi_writeb(hdmi, hblank, HDMI_FC_INHBLANK0);

	/* Set up vertical blanking pixel region width */
	hdmi_writeb(hdmi, vblank, HDMI_FC_INVBLANK);

	/* Set up HSYNC active edge delay width (in pixel clks) */
	hdmi_writeb(hdmi, h_de_hs >> 8, HDMI_FC_HSYNCINDELAY1);
	hdmi_writeb(hdmi, h_de_hs, HDMI_FC_HSYNCINDELAY0);

	/* Set up VSYNC active edge delay (in lines) */
	hdmi_writeb(hdmi, v_de_vs, HDMI_FC_VSYNCINDELAY);

	/* Set up HSYNC active pulse width (in pixel clks) */
	hdmi_writeb(hdmi, hsync_len >> 8, HDMI_FC_HSYNCINWIDTH1);
	hdmi_writeb(hdmi, hsync_len, HDMI_FC_HSYNCINWIDTH0);

	/* Set up VSYNC active edge delay (in lines) */
	hdmi_writeb(hdmi, vsync_len, HDMI_FC_VSYNCINWIDTH);
}

/* HDMI Initialization Step B.4 */
static void dw_hdmi_enable_video_path(struct dw_hdmi *hdmi)
{
	/* control period minimum duration */
	hdmi_writeb(hdmi, 12, HDMI_FC_CTRLDUR);
	hdmi_writeb(hdmi, 32, HDMI_FC_EXCTRLDUR);
	hdmi_writeb(hdmi, 1, HDMI_FC_EXCTRLSPAC);

	/* Set to fill TMDS data channels */
	hdmi_writeb(hdmi, 0x0B, HDMI_FC_CH0PREAM);
	hdmi_writeb(hdmi, 0x16, HDMI_FC_CH1PREAM);
	hdmi_writeb(hdmi, 0x21, HDMI_FC_CH2PREAM);

	/* Enable pixel clock and tmds data path */
	hdmi->mc_clkdis |= HDMI_MC_CLKDIS_HDCPCLK_DISABLE |
			   HDMI_MC_CLKDIS_CSCCLK_DISABLE |
			   HDMI_MC_CLKDIS_AUDCLK_DISABLE |
			   HDMI_MC_CLKDIS_PREPCLK_DISABLE |
			   HDMI_MC_CLKDIS_TMDSCLK_DISABLE;
	hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_PIXELCLK_DISABLE;
	hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);

	hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_TMDSCLK_DISABLE;
	hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);

	/* Enable csc path */
	if (is_csc_needed(hdmi)) {
		hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_CSCCLK_DISABLE;
		hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);

		hdmi_writeb(hdmi, HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_IN_PATH,
			    HDMI_MC_FLOWCTRL);
	} else {
		hdmi->mc_clkdis |= HDMI_MC_CLKDIS_CSCCLK_DISABLE;
		hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);

		hdmi_writeb(hdmi, HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_BYPASS,
			    HDMI_MC_FLOWCTRL);
	}
}

/* Workaround to clear the overflow condition */
static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
{
	unsigned int count;
	unsigned int i;
	u8 val;

	/*
	 * Under some circumstances the Frame Composer arithmetic unit can miss
	 * an FC register write due to being busy processing the previous one.
	 * The issue can be worked around by issuing a TMDS software reset and
	 * then write one of the FC registers several times.
	 *
	 * The number of iterations matters and depends on the HDMI TX revision
	 * (and possibly on the platform).
	 * 4 iterations for i.MX6Q(v1.30a) and 1 iteration for others.
	 * i.MX6DL (v1.31a), Allwinner SoCs (v1.32a), Rockchip RK3288 SoC (v2.00a),
	 * Amlogic Meson GX SoCs (v2.01a), RK3328/RK3399 SoCs (v2.11a)
	 * and i.MX8MPlus (v2.13a) have been identified as needing the workaround
	 * with a single iteration.
	 */

	switch (hdmi->version) {
	case 0x130a:
		count = 4;
		break;
	default:
		count = 1;
		break;
	}

	/* TMDS software reset */
	hdmi_writeb(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ, HDMI_MC_SWRSTZ);

	val = hdmi_readb(hdmi, HDMI_FC_INVIDCONF);
	for (i = 0; i < count; i++)
		hdmi_writeb(hdmi, val, HDMI_FC_INVIDCONF);
}

static void hdmi_disable_overflow_interrupts(struct dw_hdmi *hdmi)
{
	hdmi_writeb(hdmi, HDMI_IH_MUTE_FC_STAT2_OVERFLOW_MASK,
		    HDMI_IH_MUTE_FC_STAT2);
}

static int dw_hdmi_setup(struct dw_hdmi *hdmi,
			 const struct drm_connector *connector,
			 const struct drm_display_mode *mode)
{
	int ret;

	hdmi_disable_overflow_interrupts(hdmi);

	hdmi->vic = drm_match_cea_mode(mode);

	if (!hdmi->vic) {
		dev_dbg(hdmi->dev, "Non-CEA mode used in HDMI\n");
	} else {
		dev_dbg(hdmi->dev, "CEA mode used vic=%d\n", hdmi->vic);
	}

	if ((hdmi->vic == 6) || (hdmi->vic == 7) ||
	    (hdmi->vic == 21) || (hdmi->vic == 22) ||
	    (hdmi->vic == 2) || (hdmi->vic == 3) ||
	    (hdmi->vic == 17) || (hdmi->vic == 18))
		hdmi->hdmi_data.enc_out_encoding = V4L2_YCBCR_ENC_601;
	else
		hdmi->hdmi_data.enc_out_encoding = V4L2_YCBCR_ENC_709;

	hdmi->hdmi_data.video_mode.mpixelrepetitionoutput = 0;
	hdmi->hdmi_data.video_mode.mpixelrepetitioninput = 0;

	if (hdmi->hdmi_data.enc_in_bus_format == MEDIA_BUS_FMT_FIXED)
		hdmi->hdmi_data.enc_in_bus_format = MEDIA_BUS_FMT_RGB888_1X24;

	/* TOFIX: Get input encoding from plat data or fallback to none */
	if (hdmi->plat_data->input_bus_encoding)
		hdmi->hdmi_data.enc_in_encoding =
			hdmi->plat_data->input_bus_encoding;
	else
		hdmi->hdmi_data.enc_in_encoding = V4L2_YCBCR_ENC_DEFAULT;

	if (hdmi->hdmi_data.enc_out_bus_format == MEDIA_BUS_FMT_FIXED)
		hdmi->hdmi_data.enc_out_bus_format = MEDIA_BUS_FMT_RGB888_1X24;

	hdmi->hdmi_data.rgb_limited_range = hdmi->sink_is_hdmi &&
		drm_default_rgb_quant_range(mode) ==
		HDMI_QUANTIZATION_RANGE_LIMITED;

	hdmi->hdmi_data.pix_repet_factor = 0;
	hdmi->hdmi_data.hdcp_enable = 0;
	hdmi->hdmi_data.video_mode.mdataenablepolarity = true;

	/* HDMI Initialization Step B.1 */
	hdmi_av_composer(hdmi, &connector->display_info, mode);

	/* HDMI Initializateion Step B.2 */
	ret = hdmi->phy.ops->init(hdmi, hdmi->phy.data,
				  &connector->display_info,
				  &hdmi->previous_mode);
	if (ret)
		return ret;
	hdmi->phy.enabled = true;

	/* HDMI Initialization Step B.3 */
	dw_hdmi_enable_video_path(hdmi);

	if (hdmi->sink_has_audio) {
		dev_dbg(hdmi->dev, "sink has audio support\n");

		/* HDMI Initialization Step E - Configure audio */
		hdmi_clk_regenerator_update_pixel_clock(hdmi);
		hdmi_enable_audio_clk(hdmi, hdmi->audio_enable);
	}

	/* not for DVI mode */
	if (hdmi->sink_is_hdmi) {
		dev_dbg(hdmi->dev, "%s HDMI mode\n", __func__);

		/* HDMI Initialization Step F - Configure AVI InfoFrame */
		hdmi_config_AVI(hdmi, connector, mode);
		hdmi_config_vendor_specific_infoframe(hdmi, connector, mode);
		hdmi_config_drm_infoframe(hdmi, connector);
	} else {
		dev_dbg(hdmi->dev, "%s DVI mode\n", __func__);
	}

	hdmi_video_packetize(hdmi);
	hdmi_video_csc(hdmi);
	hdmi_video_sample(hdmi);
	hdmi_tx_hdcp_config(hdmi);

	dw_hdmi_clear_overflow(hdmi);

	return 0;
}

static void initialize_hdmi_ih_mutes(struct dw_hdmi *hdmi)
{
	u8 ih_mute;

	/*
	 * Boot up defaults are:
	 * HDMI_IH_MUTE   = 0x03 (disabled)
	 * HDMI_IH_MUTE_* = 0x00 (enabled)
	 *
	 * Disable top level interrupt bits in HDMI block
	 */
	ih_mute = hdmi_readb(hdmi, HDMI_IH_MUTE) |
		  HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT |
		  HDMI_IH_MUTE_MUTE_ALL_INTERRUPT;

	hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE);

	/* by default mask all interrupts */
	hdmi_writeb(hdmi, 0xff, HDMI_VP_MASK);
	hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK0);
	hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK1);
	hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK2);
	hdmi_writeb(hdmi, 0xff, HDMI_PHY_MASK0);
	hdmi_writeb(hdmi, 0xff, HDMI_PHY_I2CM_INT_ADDR);
	hdmi_writeb(hdmi, 0xff, HDMI_PHY_I2CM_CTLINT_ADDR);
	hdmi_writeb(hdmi, 0xff, HDMI_AUD_INT);
	hdmi_writeb(hdmi, 0xff, HDMI_AUD_SPDIFINT);
	hdmi_writeb(hdmi, 0xff, HDMI_AUD_HBR_MASK);
	hdmi_writeb(hdmi, 0xff, HDMI_GP_MASK);
	hdmi_writeb(hdmi, 0xff, HDMI_A_APIINTMSK);
	hdmi_writeb(hdmi, 0xff, HDMI_I2CM_INT);
	hdmi_writeb(hdmi, 0xff, HDMI_I2CM_CTLINT);

	/* Disable interrupts in the IH_MUTE_* registers */
	hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT0);
	hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT1);
	hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT2);
	hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_AS_STAT0);
	hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_PHY_STAT0);
	hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_I2CM_STAT0);
	hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_CEC_STAT0);
	hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_VP_STAT0);
	hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_I2CMPHY_STAT0);
	hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_AHBDMAAUD_STAT0);

	/* Enable top level interrupt bits in HDMI block */
	ih_mute &= ~(HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT |
		    HDMI_IH_MUTE_MUTE_ALL_INTERRUPT);
	hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE);
}

static void dw_hdmi_poweron(struct dw_hdmi *hdmi)
{
	hdmi->bridge_is_on = true;

	/*
	 * The curr_conn field is guaranteed to be valid here, as this function
	 * is only be called when !hdmi->disabled.
	 */
	dw_hdmi_setup(hdmi, hdmi->curr_conn, &hdmi->previous_mode);
}

static void dw_hdmi_poweroff(struct dw_hdmi *hdmi)
{
	if (hdmi->phy.enabled) {
		hdmi->phy.ops->disable(hdmi, hdmi->phy.data);
		hdmi->phy.enabled = false;
	}

	hdmi->bridge_is_on = false;
}

static void dw_hdmi_update_power(struct dw_hdmi *hdmi)
{
	int force = hdmi->force;

	if (hdmi->disabled) {
		force = DRM_FORCE_OFF;
	} else if (force == DRM_FORCE_UNSPECIFIED) {
		if (hdmi->rxsense)
			force = DRM_FORCE_ON;
		else
			force = DRM_FORCE_OFF;
	}

	if (force == DRM_FORCE_OFF) {
		if (hdmi->bridge_is_on)
			dw_hdmi_poweroff(hdmi);
	} else {
		if (!hdmi->bridge_is_on)
			dw_hdmi_poweron(hdmi);
	}
}

/*
 * Adjust the detection of RXSENSE according to whether we have a forced
 * connection mode enabled, or whether we have been disabled.  There is
 * no point processing RXSENSE interrupts if we have a forced connection
 * state, or DRM has us disabled.
 *
 * We also disable rxsense interrupts when we think we're disconnected
 * to avoid floating TDMS signals giving false rxsense interrupts.
 *
 * Note: we still need to listen for HPD interrupts even when DRM has us
 * disabled so that we can detect a connect event.
 */
static void dw_hdmi_update_phy_mask(struct dw_hdmi *hdmi)
{
	if (hdmi->phy.ops->update_hpd)
		hdmi->phy.ops->update_hpd(hdmi, hdmi->phy.data,
					  hdmi->force, hdmi->disabled,
					  hdmi->rxsense);
}

static enum drm_connector_status dw_hdmi_detect(struct dw_hdmi *hdmi)
{
	enum drm_connector_status result;

	result = hdmi->phy.ops->read_hpd(hdmi, hdmi->phy.data);
	hdmi->last_connector_result = result;

	return result;
}

static const struct drm_edid *dw_hdmi_edid_read(struct dw_hdmi *hdmi,
						struct drm_connector *connector)
{
	const struct drm_edid *drm_edid;
	const struct edid *edid;

	if (!hdmi->ddc)
		return NULL;

	drm_edid = drm_edid_read_ddc(connector, hdmi->ddc);
	if (!drm_edid) {
		dev_dbg(hdmi->dev, "failed to get edid\n");
		return NULL;
	}

	/*
	 * FIXME: This should use connector->display_info.is_hdmi and
	 * connector->display_info.has_audio from a path that has read the EDID
	 * and called drm_edid_connector_update().
	 */
	edid = drm_edid_raw(drm_edid);

	dev_dbg(hdmi->dev, "got edid: width[%d] x height[%d]\n",
		edid->width_cm, edid->height_cm);

	hdmi->sink_is_hdmi = drm_detect_hdmi_monitor(edid);
	hdmi->sink_has_audio = drm_detect_monitor_audio(edid);

	return drm_edid;
}

/* -----------------------------------------------------------------------------
 * DRM Connector Operations
 */

static enum drm_connector_status
dw_hdmi_connector_detect(struct drm_connector *connector, bool force)
{
	struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
					     connector);
	return dw_hdmi_detect(hdmi);
}

static int dw_hdmi_connector_get_modes(struct drm_connector *connector)
{
	struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
					     connector);
	const struct drm_edid *drm_edid;
	int ret;

	drm_edid = dw_hdmi_edid_read(hdmi, connector);

	drm_edid_connector_update(connector, drm_edid);
	cec_notifier_set_phys_addr(hdmi->cec_notifier,
				   connector->display_info.source_physical_address);
	ret = drm_edid_connector_add_modes(connector);
	drm_edid_free(drm_edid);

	return ret;
}

static int dw_hdmi_connector_atomic_check(struct drm_connector *connector,
					  struct drm_atomic_state *state)
{
	struct drm_connector_state *old_state =
		drm_atomic_get_old_connector_state(state, connector);
	struct drm_connector_state *new_state =
		drm_atomic_get_new_connector_state(state, connector);
	struct drm_crtc *crtc = new_state->crtc;
	struct drm_crtc_state *crtc_state;

	if (!crtc)
		return 0;

	if (!drm_connector_atomic_hdr_metadata_equal(old_state, new_state)) {
		crtc_state = drm_atomic_get_crtc_state(state, crtc);
		if (IS_ERR(crtc_state))
			return PTR_ERR(crtc_state);

		crtc_state->mode_changed = true;
	}

	return 0;
}

static void dw_hdmi_connector_force(struct drm_connector *connector)
{
	struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
					     connector);

	mutex_lock(&hdmi->mutex);
	hdmi->force = connector->force;
	dw_hdmi_update_power(hdmi);
	dw_hdmi_update_phy_mask(hdmi);
	mutex_unlock(&hdmi->mutex);
}

static const struct drm_connector_funcs dw_hdmi_connector_funcs = {
	.fill_modes = drm_helper_probe_single_connector_modes,
	.detect = dw_hdmi_connector_detect,
	.destroy = drm_connector_cleanup,
	.force = dw_hdmi_connector_force,
	.reset = drm_atomic_helper_connector_reset,
	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};

static const struct drm_connector_helper_funcs dw_hdmi_connector_helper_funcs = {
	.get_modes = dw_hdmi_connector_get_modes,
	.atomic_check = dw_hdmi_connector_atomic_check,
};

static int dw_hdmi_connector_create(struct dw_hdmi *hdmi)
{
	struct drm_connector *connector = &hdmi->connector;
	struct cec_connector_info conn_info;
	struct cec_notifier *notifier;

	if (hdmi->version >= 0x200a)
		connector->ycbcr_420_allowed =
			hdmi->plat_data->ycbcr_420_allowed;
	else
		connector->ycbcr_420_allowed = false;

	connector->interlace_allowed = 1;
	connector->polled = DRM_CONNECTOR_POLL_HPD;

	drm_connector_helper_add(connector, &dw_hdmi_connector_helper_funcs);

	drm_connector_init_with_ddc(hdmi->bridge.dev, connector,
				    &dw_hdmi_connector_funcs,
				    DRM_MODE_CONNECTOR_HDMIA,
				    hdmi->ddc);

	/*
	 * drm_connector_attach_max_bpc_property() requires the
	 * connector to have a state.
	 */
	drm_atomic_helper_connector_reset(connector);

	drm_connector_attach_max_bpc_property(connector, 8, 16);

	if (hdmi->version >= 0x200a && hdmi->plat_data->use_drm_infoframe)
		drm_connector_attach_hdr_output_metadata_property(connector);

	drm_connector_attach_encoder(connector, hdmi->bridge.encoder);

	cec_fill_conn_info_from_drm(&conn_info, connector);

	notifier = cec_notifier_conn_register(hdmi->dev, NULL, &conn_info);
	if (!notifier)
		return -ENOMEM;

	mutex_lock(&hdmi->cec_notifier_mutex);
	hdmi->cec_notifier = notifier;
	mutex_unlock(&hdmi->cec_notifier_mutex);

	return 0;
}

/* -----------------------------------------------------------------------------
 * DRM Bridge Operations
 */

/*
 * Possible output formats :
 * - MEDIA_BUS_FMT_UYYVYY16_0_5X48,
 * - MEDIA_BUS_FMT_UYYVYY12_0_5X36,
 * - MEDIA_BUS_FMT_UYYVYY10_0_5X30,
 * - MEDIA_BUS_FMT_UYYVYY8_0_5X24,
 * - MEDIA_BUS_FMT_YUV16_1X48,
 * - MEDIA_BUS_FMT_RGB161616_1X48,
 * - MEDIA_BUS_FMT_UYVY12_1X24,
 * - MEDIA_BUS_FMT_YUV12_1X36,
 * - MEDIA_BUS_FMT_RGB121212_1X36,
 * - MEDIA_BUS_FMT_UYVY10_1X20,
 * - MEDIA_BUS_FMT_YUV10_1X30,
 * - MEDIA_BUS_FMT_RGB101010_1X30,
 * - MEDIA_BUS_FMT_UYVY8_1X16,
 * - MEDIA_BUS_FMT_YUV8_1X24,
 * - MEDIA_BUS_FMT_RGB888_1X24,
 */

/* Can return a maximum of 11 possible output formats for a mode/connector */
#define MAX_OUTPUT_SEL_FORMATS	11

static u32 *dw_hdmi_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge,
					struct drm_bridge_state *bridge_state,
					struct drm_crtc_state *crtc_state,
					struct drm_connector_state *conn_state,
					unsigned int *num_output_fmts)
{
	struct drm_connector *conn = conn_state->connector;
	struct drm_display_info *info = &conn->display_info;
	struct drm_display_mode *mode = &crtc_state->mode;
	u8 max_bpc = conn_state->max_requested_bpc;
	bool is_hdmi2_sink = info->hdmi.scdc.supported ||
			     (info->color_formats & DRM_COLOR_FORMAT_YCBCR420);
	u32 *output_fmts;
	unsigned int i = 0;

	*num_output_fmts = 0;

	output_fmts = kcalloc(MAX_OUTPUT_SEL_FORMATS, sizeof(*output_fmts),
			      GFP_KERNEL);
	if (!output_fmts)
		return NULL;

	/* If dw-hdmi is the first or only bridge, avoid negociating with ourselves */
	if (list_is_singular(&bridge->encoder->bridge_chain) ||
	    list_is_first(&bridge->chain_node, &bridge->encoder->bridge_chain)) {
		*num_output_fmts = 1;
		output_fmts[0] = MEDIA_BUS_FMT_FIXED;

		return output_fmts;
	}

	/*
	 * If the current mode enforces 4:2:0, force the output but format
	 * to 4:2:0 and do not add the YUV422/444/RGB formats
	 */
	if (conn->ycbcr_420_allowed &&
	    (drm_mode_is_420_only(info, mode) ||
	     (is_hdmi2_sink && drm_mode_is_420_also(info, mode)))) {

		/* Order bus formats from 16bit to 8bit if supported */
		if (max_bpc >= 16 && info->bpc == 16 &&
		    (info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_48))
			output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY16_0_5X48;

		if (max_bpc >= 12 && info->bpc >= 12 &&
		    (info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_36))
			output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY12_0_5X36;

		if (max_bpc >= 10 && info->bpc >= 10 &&
		    (info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_30))
			output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY10_0_5X30;

		/* Default 8bit fallback */
		output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY8_0_5X24;

		if (drm_mode_is_420_only(info, mode)) {
			*num_output_fmts = i;
			return output_fmts;
		}
	}

	/*
	 * Order bus formats from 16bit to 8bit and from YUV422 to RGB
	 * if supported. In any case the default RGB888 format is added
	 */

	/* Default 8bit RGB fallback */
	output_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24;

	if (max_bpc >= 16 && info->bpc == 16) {
		if (info->color_formats & DRM_COLOR_FORMAT_YCBCR444)
			output_fmts[i++] = MEDIA_BUS_FMT_YUV16_1X48;

		output_fmts[i++] = MEDIA_BUS_FMT_RGB161616_1X48;
	}

	if (max_bpc >= 12 && info->bpc >= 12) {
		if (info->color_formats & DRM_COLOR_FORMAT_YCBCR422)
			output_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24;

		if (info->color_formats & DRM_COLOR_FORMAT_YCBCR444)
			output_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36;

		output_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36;
	}

	if (max_bpc >= 10 && info->bpc >= 10) {
		if (info->color_formats & DRM_COLOR_FORMAT_YCBCR422)
			output_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20;

		if (info->color_formats & DRM_COLOR_FORMAT_YCBCR444)
			output_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30;

		output_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30;
	}

	if (info->color_formats & DRM_COLOR_FORMAT_YCBCR422)
		output_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16;

	if (info->color_formats & DRM_COLOR_FORMAT_YCBCR444)
		output_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24;

	*num_output_fmts = i;

	return output_fmts;
}

/*
 * Possible input formats :
 * - MEDIA_BUS_FMT_RGB888_1X24
 * - MEDIA_BUS_FMT_YUV8_1X24
 * - MEDIA_BUS_FMT_UYVY8_1X16
 * - MEDIA_BUS_FMT_UYYVYY8_0_5X24
 * - MEDIA_BUS_FMT_RGB101010_1X30
 * - MEDIA_BUS_FMT_YUV10_1X30
 * - MEDIA_BUS_FMT_UYVY10_1X20
 * - MEDIA_BUS_FMT_UYYVYY10_0_5X30
 * - MEDIA_BUS_FMT_RGB121212_1X36
 * - MEDIA_BUS_FMT_YUV12_1X36
 * - MEDIA_BUS_FMT_UYVY12_1X24
 * - MEDIA_BUS_FMT_UYYVYY12_0_5X36
 * - MEDIA_BUS_FMT_RGB161616_1X48
 * - MEDIA_BUS_FMT_YUV16_1X48
 * - MEDIA_BUS_FMT_UYYVYY16_0_5X48
 */

/* Can return a maximum of 3 possible input formats for an output format */
#define MAX_INPUT_SEL_FORMATS	3

static u32 *dw_hdmi_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
					struct drm_bridge_state *bridge_state,
					struct drm_crtc_state *crtc_state,
					struct drm_connector_state *conn_state,
					u32 output_fmt,
					unsigned int *num_input_fmts)
{
	u32 *input_fmts;
	unsigned int i = 0;

	*num_input_fmts = 0;

	input_fmts = kcalloc(MAX_INPUT_SEL_FORMATS, sizeof(*input_fmts),
			     GFP_KERNEL);
	if (!input_fmts)
		return NULL;

	switch (output_fmt) {
	/* If MEDIA_BUS_FMT_FIXED is tested, return default bus format */
	case MEDIA_BUS_FMT_FIXED:
		input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24;
		break;
	/* 8bit */
	case MEDIA_BUS_FMT_RGB888_1X24:
		input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24;
		input_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24;
		input_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16;
		break;
	case MEDIA_BUS_FMT_YUV8_1X24:
		input_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24;
		input_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16;
		input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24;
		break;
	case MEDIA_BUS_FMT_UYVY8_1X16:
		input_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16;
		input_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24;
		input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24;
		break;

	/* 10bit */
	case MEDIA_BUS_FMT_RGB101010_1X30:
		input_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30;
		input_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30;
		input_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20;
		break;
	case MEDIA_BUS_FMT_YUV10_1X30:
		input_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30;
		input_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20;
		input_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30;
		break;
	case MEDIA_BUS_FMT_UYVY10_1X20:
		input_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20;
		input_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30;
		input_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30;
		break;

	/* 12bit */
	case MEDIA_BUS_FMT_RGB121212_1X36:
		input_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36;
		input_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36;
		input_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24;
		break;
	case MEDIA_BUS_FMT_YUV12_1X36:
		input_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36;
		input_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24;
		input_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36;
		break;
	case MEDIA_BUS_FMT_UYVY12_1X24:
		input_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24;
		input_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36;
		input_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36;
		break;

	/* 16bit */
	case MEDIA_BUS_FMT_RGB161616_1X48:
		input_fmts[i++] = MEDIA_BUS_FMT_RGB161616_1X48;
		input_fmts[i++] = MEDIA_BUS_FMT_YUV16_1X48;
		break;
	case MEDIA_BUS_FMT_YUV16_1X48:
		input_fmts[i++] = MEDIA_BUS_FMT_YUV16_1X48;
		input_fmts[i++] = MEDIA_BUS_FMT_RGB161616_1X48;
		break;

	/*YUV 4:2:0 */
	case MEDIA_BUS_FMT_UYYVYY8_0_5X24:
	case MEDIA_BUS_FMT_UYYVYY10_0_5X30:
	case MEDIA_BUS_FMT_UYYVYY12_0_5X36:
	case MEDIA_BUS_FMT_UYYVYY16_0_5X48:
		input_fmts[i++] = output_fmt;
		break;
	}

	*num_input_fmts = i;

	if (*num_input_fmts == 0) {
		kfree(input_fmts);
		input_fmts = NULL;
	}

	return input_fmts;
}

static int dw_hdmi_bridge_atomic_check(struct drm_bridge *bridge,
				       struct drm_bridge_state *bridge_state,
				       struct drm_crtc_state *crtc_state,
				       struct drm_connector_state *conn_state)
{
	struct dw_hdmi *hdmi = bridge->driver_private;

	hdmi->hdmi_data.enc_out_bus_format =
			bridge_state->output_bus_cfg.format;

	hdmi->hdmi_data.enc_in_bus_format =
			bridge_state->input_bus_cfg.format;

	dev_dbg(hdmi->dev, "input format 0x%04x, output format 0x%04x\n",
		bridge_state->input_bus_cfg.format,
		bridge_state->output_bus_cfg.format);

	return 0;
}

static int dw_hdmi_bridge_attach(struct drm_bridge *bridge,
				 enum drm_bridge_attach_flags flags)
{
	struct dw_hdmi *hdmi = bridge->driver_private;

	if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
		return drm_bridge_attach(bridge->encoder, hdmi->next_bridge,
					 bridge, flags);

	return dw_hdmi_connector_create(hdmi);
}

static void dw_hdmi_bridge_detach(struct drm_bridge *bridge)
{
	struct dw_hdmi *hdmi = bridge->driver_private;

	mutex_lock(&hdmi->cec_notifier_mutex);
	cec_notifier_conn_unregister(hdmi->cec_notifier);
	hdmi->cec_notifier = NULL;
	mutex_unlock(&hdmi->cec_notifier_mutex);
}

static enum drm_mode_status
dw_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
			  const struct drm_display_info *info,
			  const struct drm_display_mode *mode)
{
	struct dw_hdmi *hdmi = bridge->driver_private;
	const struct dw_hdmi_plat_data *pdata = hdmi->plat_data;
	enum drm_mode_status mode_status = MODE_OK;

	/* We don't support double-clocked modes */
	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
		return MODE_BAD;

	if (pdata->mode_valid)
		mode_status = pdata->mode_valid(hdmi, pdata->priv_data, info,
						mode);

	return mode_status;
}

static void dw_hdmi_bridge_mode_set(struct drm_bridge *bridge,
				    const struct drm_display_mode *orig_mode,
				    const struct drm_display_mode *mode)
{
	struct dw_hdmi *hdmi = bridge->driver_private;

	mutex_lock(&hdmi->mutex);

	/* Store the display mode for plugin/DKMS poweron events */
	drm_mode_copy(&hdmi->previous_mode, mode);

	mutex_unlock(&hdmi->mutex);
}

static void dw_hdmi_bridge_atomic_disable(struct drm_bridge *bridge,
					  struct drm_bridge_state *old_state)
{
	struct dw_hdmi *hdmi = bridge->driver_private;

	mutex_lock(&hdmi->mutex);
	hdmi->disabled = true;
	hdmi->curr_conn = NULL;
	dw_hdmi_update_power(hdmi);
	dw_hdmi_update_phy_mask(hdmi);
	handle_plugged_change(hdmi, false);
	mutex_unlock(&hdmi->mutex);
}

static void dw_hdmi_bridge_atomic_enable(struct drm_bridge *bridge,
					 struct drm_bridge_state *old_state)
{
	struct dw_hdmi *hdmi = bridge->driver_private;
	struct drm_atomic_state *state = old_state->base.state;
	struct drm_connector *connector;

	connector = drm_atomic_get_new_connector_for_encoder(state,
							     bridge->encoder);

	mutex_lock(&hdmi->mutex);
	hdmi->disabled = false;
	hdmi->curr_conn = connector;
	dw_hdmi_update_power(hdmi);
	dw_hdmi_update_phy_mask(hdmi);
	handle_plugged_change(hdmi, true);
	mutex_unlock(&hdmi->mutex);
}

static enum drm_connector_status dw_hdmi_bridge_detect(struct drm_bridge *bridge)
{
	struct dw_hdmi *hdmi = bridge->driver_private;

	return dw_hdmi_detect(hdmi);
}

static const struct drm_edid *dw_hdmi_bridge_edid_read(struct drm_bridge *bridge,
						       struct drm_connector *connector)
{
	struct dw_hdmi *hdmi = bridge->driver_private;

	return dw_hdmi_edid_read(hdmi, connector);
}

static const struct drm_bridge_funcs dw_hdmi_bridge_funcs = {
	.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
	.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
	.atomic_reset = drm_atomic_helper_bridge_reset,
	.attach = dw_hdmi_bridge_attach,
	.detach = dw_hdmi_bridge_detach,
	.atomic_check = dw_hdmi_bridge_atomic_check,
	.atomic_get_output_bus_fmts = dw_hdmi_bridge_atomic_get_output_bus_fmts,
	.atomic_get_input_bus_fmts = dw_hdmi_bridge_atomic_get_input_bus_fmts,
	.atomic_enable = dw_hdmi_bridge_atomic_enable,
	.atomic_disable = dw_hdmi_bridge_atomic_disable,
	.mode_set = dw_hdmi_bridge_mode_set,
	.mode_valid = dw_hdmi_bridge_mode_valid,
	.detect = dw_hdmi_bridge_detect,
	.edid_read = dw_hdmi_bridge_edid_read,
};

/* -----------------------------------------------------------------------------
 * IRQ Handling
 */

static irqreturn_t dw_hdmi_i2c_irq(struct dw_hdmi *hdmi)
{
	struct dw_hdmi_i2c *i2c = hdmi->i2c;
	unsigned int stat;

	stat = hdmi_readb(hdmi, HDMI_IH_I2CM_STAT0);
	if (!stat)
		return IRQ_NONE;

	hdmi_writeb(hdmi, stat, HDMI_IH_I2CM_STAT0);

	i2c->stat = stat;

	complete(&i2c->cmp);

	return IRQ_HANDLED;
}

static irqreturn_t dw_hdmi_hardirq(int irq, void *dev_id)
{
	struct dw_hdmi *hdmi = dev_id;
	u8 intr_stat;
	irqreturn_t ret = IRQ_NONE;

	if (hdmi->i2c)
		ret = dw_hdmi_i2c_irq(hdmi);

	intr_stat = hdmi_readb(hdmi, HDMI_IH_PHY_STAT0);
	if (intr_stat) {
		hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0);
		return IRQ_WAKE_THREAD;
	}

	return ret;
}

void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense)
{
	mutex_lock(&hdmi->mutex);

	if (!hdmi->force) {
		/*
		 * If the RX sense status indicates we're disconnected,
		 * clear the software rxsense status.
		 */
		if (!rx_sense)
			hdmi->rxsense = false;

		/*
		 * Only set the software rxsense status when both
		 * rxsense and hpd indicates we're connected.
		 * This avoids what seems to be bad behaviour in
		 * at least iMX6S versions of the phy.
		 */
		if (hpd)
			hdmi->rxsense = true;

		dw_hdmi_update_power(hdmi);
		dw_hdmi_update_phy_mask(hdmi);
	}
	mutex_unlock(&hdmi->mutex);
}
EXPORT_SYMBOL_GPL(dw_hdmi_setup_rx_sense);

static irqreturn_t dw_hdmi_irq(int irq, void *dev_id)
{
	struct dw_hdmi *hdmi = dev_id;
	u8 intr_stat, phy_int_pol, phy_pol_mask, phy_stat;
	enum drm_connector_status status = connector_status_unknown;

	intr_stat = hdmi_readb(hdmi, HDMI_IH_PHY_STAT0);
	phy_int_pol = hdmi_readb(hdmi, HDMI_PHY_POL0);
	phy_stat = hdmi_readb(hdmi, HDMI_PHY_STAT0);

	phy_pol_mask = 0;
	if (intr_stat & HDMI_IH_PHY_STAT0_HPD)
		phy_pol_mask |= HDMI_PHY_HPD;
	if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE0)
		phy_pol_mask |= HDMI_PHY_RX_SENSE0;
	if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE1)
		phy_pol_mask |= HDMI_PHY_RX_SENSE1;
	if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE2)
		phy_pol_mask |= HDMI_PHY_RX_SENSE2;
	if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE3)
		phy_pol_mask |= HDMI_PHY_RX_SENSE3;

	if (phy_pol_mask)
		hdmi_modb(hdmi, ~phy_int_pol, phy_pol_mask, HDMI_PHY_POL0);

	/*
	 * RX sense tells us whether the TDMS transmitters are detecting
	 * load - in other words, there's something listening on the
	 * other end of the link.  Use this to decide whether we should
	 * power on the phy as HPD may be toggled by the sink to merely
	 * ask the source to re-read the EDID.
	 */
	if (intr_stat &
	    (HDMI_IH_PHY_STAT0_RX_SENSE | HDMI_IH_PHY_STAT0_HPD)) {
		dw_hdmi_setup_rx_sense(hdmi,
				       phy_stat & HDMI_PHY_HPD,
				       phy_stat & HDMI_PHY_RX_SENSE);

		if ((phy_stat & (HDMI_PHY_RX_SENSE | HDMI_PHY_HPD)) == 0) {
			mutex_lock(&hdmi->cec_notifier_mutex);
			cec_notifier_phys_addr_invalidate(hdmi->cec_notifier);
			mutex_unlock(&hdmi->cec_notifier_mutex);
		}

		if (phy_stat & HDMI_PHY_HPD)
			status = connector_status_connected;

		if (!(phy_stat & (HDMI_PHY_HPD | HDMI_PHY_RX_SENSE)))
			status = connector_status_disconnected;
	}

	if (status != connector_status_unknown) {
		dev_dbg(hdmi->dev, "EVENT=%s\n",
			status == connector_status_connected ?
			"plugin" : "plugout");

		if (hdmi->bridge.dev) {
			drm_helper_hpd_irq_event(hdmi->bridge.dev);
			drm_bridge_hpd_notify(&hdmi->bridge, status);
		}
	}

	hdmi_writeb(hdmi, intr_stat, HDMI_IH_PHY_STAT0);
	hdmi_writeb(hdmi, ~(HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE),
		    HDMI_IH_MUTE_PHY_STAT0);

	return IRQ_HANDLED;
}

static const struct dw_hdmi_phy_data dw_hdmi_phys[] = {
	{
		.type = DW_HDMI_PHY_DWC_HDMI_TX_PHY,
		.name = "DWC HDMI TX PHY",
		.gen = 1,
	}, {
		.type = DW_HDMI_PHY_DWC_MHL_PHY_HEAC,
		.name = "DWC MHL PHY + HEAC PHY",
		.gen = 2,
		.has_svsret = true,
		.configure = hdmi_phy_configure_dwc_hdmi_3d_tx,
	}, {
		.type = DW_HDMI_PHY_DWC_MHL_PHY,
		.name = "DWC MHL PHY",
		.gen = 2,
		.has_svsret = true,
		.configure = hdmi_phy_configure_dwc_hdmi_3d_tx,
	}, {
		.type = DW_HDMI_PHY_DWC_HDMI_3D_TX_PHY_HEAC,
		.name = "DWC HDMI 3D TX PHY + HEAC PHY",
		.gen = 2,
		.configure = hdmi_phy_configure_dwc_hdmi_3d_tx,
	}, {
		.type = DW_HDMI_PHY_DWC_HDMI_3D_TX_PHY,
		.name = "DWC HDMI 3D TX PHY",
		.gen = 2,
		.configure = hdmi_phy_configure_dwc_hdmi_3d_tx,
	}, {
		.type = DW_HDMI_PHY_DWC_HDMI20_TX_PHY,
		.name = "DWC HDMI 2.0 TX PHY",
		.gen = 2,
		.has_svsret = true,
		.configure = hdmi_phy_configure_dwc_hdmi_3d_tx,
	}, {
		.type = DW_HDMI_PHY_VENDOR_PHY,
		.name = "Vendor PHY",
	}
};

static int dw_hdmi_detect_phy(struct dw_hdmi *hdmi)
{
	unsigned int i;
	u8 phy_type;

	phy_type = hdmi->plat_data->phy_force_vendor ?
				DW_HDMI_PHY_VENDOR_PHY :
				hdmi_readb(hdmi, HDMI_CONFIG2_ID);

	if (phy_type == DW_HDMI_PHY_VENDOR_PHY) {
		/* Vendor PHYs require support from the glue layer. */
		if (!hdmi->plat_data->phy_ops || !hdmi->plat_data->phy_name) {
			dev_err(hdmi->dev,
				"Vendor HDMI PHY not supported by glue layer\n");
			return -ENODEV;
		}

		hdmi->phy.ops = hdmi->plat_data->phy_ops;
		hdmi->phy.data = hdmi->plat_data->phy_data;
		hdmi->phy.name = hdmi->plat_data->phy_name;
		return 0;
	}

	/* Synopsys PHYs are handled internally. */
	for (i = 0; i < ARRAY_SIZE(dw_hdmi_phys); ++i) {
		if (dw_hdmi_phys[i].type == phy_type) {
			hdmi->phy.ops = &dw_hdmi_synopsys_phy_ops;
			hdmi->phy.name = dw_hdmi_phys[i].name;
			hdmi->phy.data = (void *)&dw_hdmi_phys[i];

			if (!dw_hdmi_phys[i].configure &&
			    !hdmi->plat_data->configure_phy) {
				dev_err(hdmi->dev, "%s requires platform support\n",
					hdmi->phy.name);
				return -ENODEV;
			}

			return 0;
		}
	}

	dev_err(hdmi->dev, "Unsupported HDMI PHY type (%02x)\n", phy_type);
	return -ENODEV;
}

static void dw_hdmi_cec_enable(struct dw_hdmi *hdmi)
{
	mutex_lock(&hdmi->mutex);
	hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_CECCLK_DISABLE;
	hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);
	mutex_unlock(&hdmi->mutex);
}

static void dw_hdmi_cec_disable(struct dw_hdmi *hdmi)
{
	mutex_lock(&hdmi->mutex);
	hdmi->mc_clkdis |= HDMI_MC_CLKDIS_CECCLK_DISABLE;
	hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);
	mutex_unlock(&hdmi->mutex);
}

static const struct dw_hdmi_cec_ops dw_hdmi_cec_ops = {
	.write = hdmi_writeb,
	.read = hdmi_readb,
	.enable = dw_hdmi_cec_enable,
	.disable = dw_hdmi_cec_disable,
};

static const struct regmap_config hdmi_regmap_8bit_config = {
	.reg_bits	= 32,
	.val_bits	= 8,
	.reg_stride	= 1,
	.max_register	= HDMI_I2CM_FS_SCL_LCNT_0_ADDR,
};

static const struct regmap_config hdmi_regmap_32bit_config = {
	.reg_bits	= 32,
	.val_bits	= 32,
	.reg_stride	= 4,
	.max_register	= HDMI_I2CM_FS_SCL_LCNT_0_ADDR << 2,
};

static void dw_hdmi_init_hw(struct dw_hdmi *hdmi)
{
	initialize_hdmi_ih_mutes(hdmi);

	/*
	 * Reset HDMI DDC I2C master controller and mute I2CM interrupts.
	 * Even if we are using a separate i2c adapter doing this doesn't
	 * hurt.
	 */
	dw_hdmi_i2c_init(hdmi);

	if (hdmi->phy.ops->setup_hpd)
		hdmi->phy.ops->setup_hpd(hdmi, hdmi->phy.data);
}

/* -----------------------------------------------------------------------------
 * Probe/remove API, used from platforms based on the DRM bridge API.
 */

static int dw_hdmi_parse_dt(struct dw_hdmi *hdmi)
{
	struct device_node *endpoint;
	struct device_node *remote;

	if (!hdmi->plat_data->output_port)
		return 0;

	endpoint = of_graph_get_endpoint_by_regs(hdmi->dev->of_node,
						 hdmi->plat_data->output_port,
						 -1);
	if (!endpoint) {
		/*
		 * On platforms whose bindings don't make the output port
		 * mandatory (such as Rockchip) the plat_data->output_port
		 * field isn't set, so it's safe to make this a fatal error.
		 */
		dev_err(hdmi->dev, "Missing endpoint in port@%u\n",
			hdmi->plat_data->output_port);
		return -ENODEV;
	}

	remote = of_graph_get_remote_port_parent(endpoint);
	of_node_put(endpoint);
	if (!remote) {
		dev_err(hdmi->dev, "Endpoint in port@%u unconnected\n",
			hdmi->plat_data->output_port);
		return -ENODEV;
	}

	if (!of_device_is_available(remote)) {
		dev_err(hdmi->dev, "port@%u remote device is disabled\n",
			hdmi->plat_data->output_port);
		of_node_put(remote);
		return -ENODEV;
	}

	hdmi->next_bridge = of_drm_find_bridge(remote);
	of_node_put(remote);
	if (!hdmi->next_bridge)
		return -EPROBE_DEFER;

	return 0;
}

bool dw_hdmi_bus_fmt_is_420(struct dw_hdmi *hdmi)
{
	return hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format);
}
EXPORT_SYMBOL_GPL(dw_hdmi_bus_fmt_is_420);

struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev,
			      const struct dw_hdmi_plat_data *plat_data)
{
	struct device *dev = &pdev->dev;
	struct device_node *np = dev->of_node;
	struct platform_device_info pdevinfo;
	struct device_node *ddc_node;
	struct dw_hdmi_cec_data cec;
	struct dw_hdmi *hdmi;
	struct resource *iores = NULL;
	int irq;
	int ret;
	u32 val = 1;
	u8 prod_id0;
	u8 prod_id1;
	u8 config0;
	u8 config3;

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

	hdmi->plat_data = plat_data;
	hdmi->dev = dev;
	hdmi->sample_rate = 48000;
	hdmi->channels = 2;
	hdmi->disabled = true;
	hdmi->rxsense = true;
	hdmi->phy_mask = (u8)~(HDMI_PHY_HPD | HDMI_PHY_RX_SENSE);
	hdmi->mc_clkdis = 0x7f;
	hdmi->last_connector_result = connector_status_disconnected;

	mutex_init(&hdmi->mutex);
	mutex_init(&hdmi->audio_mutex);
	mutex_init(&hdmi->cec_notifier_mutex);
	spin_lock_init(&hdmi->audio_lock);

	ret = dw_hdmi_parse_dt(hdmi);
	if (ret < 0)
		return ERR_PTR(ret);

	ddc_node = of_parse_phandle(np, "ddc-i2c-bus", 0);
	if (ddc_node) {
		hdmi->ddc = of_get_i2c_adapter_by_node(ddc_node);
		of_node_put(ddc_node);
		if (!hdmi->ddc) {
			dev_dbg(hdmi->dev, "failed to read ddc node\n");
			return ERR_PTR(-EPROBE_DEFER);
		}

	} else {
		dev_dbg(hdmi->dev, "no ddc property found\n");
	}

	if (!plat_data->regm) {
		const struct regmap_config *reg_config;

		of_property_read_u32(np, "reg-io-width", &val);
		switch (val) {
		case 4:
			reg_config = &hdmi_regmap_32bit_config;
			hdmi->reg_shift = 2;
			break;
		case 1:
			reg_config = &hdmi_regmap_8bit_config;
			break;
		default:
			dev_err(dev, "reg-io-width must be 1 or 4\n");
			return ERR_PTR(-EINVAL);
		}

		iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
		hdmi->regs = devm_ioremap_resource(dev, iores);
		if (IS_ERR(hdmi->regs)) {
			ret = PTR_ERR(hdmi->regs);
			goto err_res;
		}

		hdmi->regm = devm_regmap_init_mmio(dev, hdmi->regs, reg_config);
		if (IS_ERR(hdmi->regm)) {
			dev_err(dev, "Failed to configure regmap\n");
			ret = PTR_ERR(hdmi->regm);
			goto err_res;
		}
	} else {
		hdmi->regm = plat_data->regm;
	}

	hdmi->isfr_clk = devm_clk_get(hdmi->dev, "isfr");
	if (IS_ERR(hdmi->isfr_clk)) {
		ret = PTR_ERR(hdmi->isfr_clk);
		dev_err(hdmi->dev, "Unable to get HDMI isfr clk: %d\n", ret);
		goto err_res;
	}

	ret = clk_prepare_enable(hdmi->isfr_clk);
	if (ret) {
		dev_err(hdmi->dev, "Cannot enable HDMI isfr clock: %d\n", ret);
		goto err_res;
	}

	hdmi->iahb_clk = devm_clk_get(hdmi->dev, "iahb");
	if (IS_ERR(hdmi->iahb_clk)) {
		ret = PTR_ERR(hdmi->iahb_clk);
		dev_err(hdmi->dev, "Unable to get HDMI iahb clk: %d\n", ret);
		goto err_isfr;
	}

	ret = clk_prepare_enable(hdmi->iahb_clk);
	if (ret) {
		dev_err(hdmi->dev, "Cannot enable HDMI iahb clock: %d\n", ret);
		goto err_isfr;
	}

	hdmi->cec_clk = devm_clk_get(hdmi->dev, "cec");
	if (PTR_ERR(hdmi->cec_clk) == -ENOENT) {
		hdmi->cec_clk = NULL;
	} else if (IS_ERR(hdmi->cec_clk)) {
		ret = PTR_ERR(hdmi->cec_clk);
		if (ret != -EPROBE_DEFER)
			dev_err(hdmi->dev, "Cannot get HDMI cec clock: %d\n",
				ret);

		hdmi->cec_clk = NULL;
		goto err_iahb;
	} else {
		ret = clk_prepare_enable(hdmi->cec_clk);
		if (ret) {
			dev_err(hdmi->dev, "Cannot enable HDMI cec clock: %d\n",
				ret);
			goto err_iahb;
		}
	}

	/* Product and revision IDs */
	hdmi->version = (hdmi_readb(hdmi, HDMI_DESIGN_ID) << 8)
		      | (hdmi_readb(hdmi, HDMI_REVISION_ID) << 0);
	prod_id0 = hdmi_readb(hdmi, HDMI_PRODUCT_ID0);
	prod_id1 = hdmi_readb(hdmi, HDMI_PRODUCT_ID1);

	if (prod_id0 != HDMI_PRODUCT_ID0_HDMI_TX ||
	    (prod_id1 & ~HDMI_PRODUCT_ID1_HDCP) != HDMI_PRODUCT_ID1_HDMI_TX) {
		dev_err(dev, "Unsupported HDMI controller (%04x:%02x:%02x)\n",
			hdmi->version, prod_id0, prod_id1);
		ret = -ENODEV;
		goto err_iahb;
	}

	ret = dw_hdmi_detect_phy(hdmi);
	if (ret < 0)
		goto err_iahb;

	dev_info(dev, "Detected HDMI TX controller v%x.%03x %s HDCP (%s)\n",
		 hdmi->version >> 12, hdmi->version & 0xfff,
		 prod_id1 & HDMI_PRODUCT_ID1_HDCP ? "with" : "without",
		 hdmi->phy.name);

	dw_hdmi_init_hw(hdmi);

	irq = platform_get_irq(pdev, 0);
	if (irq < 0) {
		ret = irq;
		goto err_iahb;
	}

	ret = devm_request_threaded_irq(dev, irq, dw_hdmi_hardirq,
					dw_hdmi_irq, IRQF_SHARED,
					dev_name(dev), hdmi);
	if (ret)
		goto err_iahb;

	/*
	 * To prevent overflows in HDMI_IH_FC_STAT2, set the clk regenerator
	 * N and cts values before enabling phy
	 */
	hdmi_init_clk_regenerator(hdmi);

	/* If DDC bus is not specified, try to register HDMI I2C bus */
	if (!hdmi->ddc) {
		/* Look for (optional) stuff related to unwedging */
		hdmi->pinctrl = devm_pinctrl_get(dev);
		if (!IS_ERR(hdmi->pinctrl)) {
			hdmi->unwedge_state =
				pinctrl_lookup_state(hdmi->pinctrl, "unwedge");
			hdmi->default_state =
				pinctrl_lookup_state(hdmi->pinctrl, "default");

			if (IS_ERR(hdmi->default_state) ||
			    IS_ERR(hdmi->unwedge_state)) {
				if (!IS_ERR(hdmi->unwedge_state))
					dev_warn(dev,
						 "Unwedge requires default pinctrl\n");
				hdmi->default_state = NULL;
				hdmi->unwedge_state = NULL;
			}
		}

		hdmi->ddc = dw_hdmi_i2c_adapter(hdmi);
		if (IS_ERR(hdmi->ddc))
			hdmi->ddc = NULL;
	}

	hdmi->bridge.driver_private = hdmi;
	hdmi->bridge.funcs = &dw_hdmi_bridge_funcs;
	hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID
			 | DRM_BRIDGE_OP_HPD;
	hdmi->bridge.interlace_allowed = true;
	hdmi->bridge.ddc = hdmi->ddc;
	hdmi->bridge.of_node = pdev->dev.of_node;
	hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;

	memset(&pdevinfo, 0, sizeof(pdevinfo));
	pdevinfo.parent = dev;
	pdevinfo.id = PLATFORM_DEVID_AUTO;

	config0 = hdmi_readb(hdmi, HDMI_CONFIG0_ID);
	config3 = hdmi_readb(hdmi, HDMI_CONFIG3_ID);

	if (iores && config3 & HDMI_CONFIG3_AHBAUDDMA) {
		struct dw_hdmi_audio_data audio;

		audio.phys = iores->start;
		audio.base = hdmi->regs;
		audio.irq = irq;
		audio.hdmi = hdmi;
		audio.get_eld = hdmi_audio_get_eld;
		hdmi->enable_audio = dw_hdmi_ahb_audio_enable;
		hdmi->disable_audio = dw_hdmi_ahb_audio_disable;

		pdevinfo.name = "dw-hdmi-ahb-audio";
		pdevinfo.data = &audio;
		pdevinfo.size_data = sizeof(audio);
		pdevinfo.dma_mask = DMA_BIT_MASK(32);
		hdmi->audio = platform_device_register_full(&pdevinfo);
	} else if (config0 & HDMI_CONFIG0_I2S) {
		struct dw_hdmi_i2s_audio_data audio;

		audio.hdmi	= hdmi;
		audio.get_eld	= hdmi_audio_get_eld;
		audio.write	= hdmi_writeb;
		audio.read	= hdmi_readb;
		hdmi->enable_audio = dw_hdmi_i2s_audio_enable;
		hdmi->disable_audio = dw_hdmi_i2s_audio_disable;

		pdevinfo.name = "dw-hdmi-i2s-audio";
		pdevinfo.data = &audio;
		pdevinfo.size_data = sizeof(audio);
		pdevinfo.dma_mask = DMA_BIT_MASK(32);
		hdmi->audio = platform_device_register_full(&pdevinfo);
	} else if (iores && config3 & HDMI_CONFIG3_GPAUD) {
		struct dw_hdmi_audio_data audio;

		audio.phys = iores->start;
		audio.base = hdmi->regs;
		audio.irq = irq;
		audio.hdmi = hdmi;
		audio.get_eld = hdmi_audio_get_eld;

		hdmi->enable_audio = dw_hdmi_gp_audio_enable;
		hdmi->disable_audio = dw_hdmi_gp_audio_disable;

		pdevinfo.name = "dw-hdmi-gp-audio";
		pdevinfo.id = PLATFORM_DEVID_NONE;
		pdevinfo.data = &audio;
		pdevinfo.size_data = sizeof(audio);
		pdevinfo.dma_mask = DMA_BIT_MASK(32);
		hdmi->audio = platform_device_register_full(&pdevinfo);
	}

	if (!plat_data->disable_cec && (config0 & HDMI_CONFIG0_CEC)) {
		cec.hdmi = hdmi;
		cec.ops = &dw_hdmi_cec_ops;
		cec.irq = irq;

		pdevinfo.name = "dw-hdmi-cec";
		pdevinfo.data = &cec;
		pdevinfo.size_data = sizeof(cec);
		pdevinfo.dma_mask = 0;

		hdmi->cec = platform_device_register_full(&pdevinfo);
	}

	drm_bridge_add(&hdmi->bridge);

	return hdmi;

err_iahb:
	clk_disable_unprepare(hdmi->iahb_clk);
	clk_disable_unprepare(hdmi->cec_clk);
err_isfr:
	clk_disable_unprepare(hdmi->isfr_clk);
err_res:
	i2c_put_adapter(hdmi->ddc);

	return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(dw_hdmi_probe);

void dw_hdmi_remove(struct dw_hdmi *hdmi)
{
	drm_bridge_remove(&hdmi->bridge);

	if (hdmi->audio && !IS_ERR(hdmi->audio))
		platform_device_unregister(hdmi->audio);
	if (!IS_ERR(hdmi->cec))
		platform_device_unregister(hdmi->cec);

	/* Disable all interrupts */
	hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0);

	clk_disable_unprepare(hdmi->iahb_clk);
	clk_disable_unprepare(hdmi->isfr_clk);
	clk_disable_unprepare(hdmi->cec_clk);

	if (hdmi->i2c)
		i2c_del_adapter(&hdmi->i2c->adap);
	else
		i2c_put_adapter(hdmi->ddc);
}
EXPORT_SYMBOL_GPL(dw_hdmi_remove);

/* -----------------------------------------------------------------------------
 * Bind/unbind API, used from platforms based on the component framework.
 */
struct dw_hdmi *dw_hdmi_bind(struct platform_device *pdev,
			     struct drm_encoder *encoder,
			     const struct dw_hdmi_plat_data *plat_data)
{
	struct dw_hdmi *hdmi;
	int ret;

	hdmi = dw_hdmi_probe(pdev, plat_data);
	if (IS_ERR(hdmi))
		return hdmi;

	ret = drm_bridge_attach(encoder, &hdmi->bridge, NULL, 0);
	if (ret) {
		dw_hdmi_remove(hdmi);
		return ERR_PTR(ret);
	}

	return hdmi;
}
EXPORT_SYMBOL_GPL(dw_hdmi_bind);

void dw_hdmi_unbind(struct dw_hdmi *hdmi)
{
	dw_hdmi_remove(hdmi);
}
EXPORT_SYMBOL_GPL(dw_hdmi_unbind);

void dw_hdmi_resume(struct dw_hdmi *hdmi)
{
	dw_hdmi_init_hw(hdmi);
}
EXPORT_SYMBOL_GPL(dw_hdmi_resume);

MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
MODULE_AUTHOR("Andy Yan <andy.yan@rock-chips.com>");
MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>");
MODULE_AUTHOR("Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>");
MODULE_DESCRIPTION("DW HDMI transmitter driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:dw-hdmi");