summaryrefslogtreecommitdiffstats
path: root/drivers/usb/dwc2/params.c
blob: 5a1500d0bdd943b5c32b7a7c0c2a75dc0f041a3c (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
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
/*
 * Copyright (C) 2004-2016 Synopsys, Inc.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/usb/of.h>
#include <linux/pci_ids.h>
#include <linux/pci.h>

#include "core.h"

#define PCI_PRODUCT_ID_HAPS_HSOTG	0xabc0
#define PCI_DEVICE_ID_LOONGSON_DWC2	0x7a04

static void dwc2_set_bcm_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->host_rx_fifo_size = 774;
	p->max_transfer_size = 65535;
	p->max_packet_count = 511;
	p->ahbcfg = 0x10;
}

static void dwc2_set_his_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->otg_caps.hnp_support = false;
	p->otg_caps.srp_support = false;
	p->speed = DWC2_SPEED_PARAM_HIGH;
	p->host_rx_fifo_size = 512;
	p->host_nperio_tx_fifo_size = 512;
	p->host_perio_tx_fifo_size = 512;
	p->max_transfer_size = 65535;
	p->max_packet_count = 511;
	p->host_channels = 16;
	p->phy_type = DWC2_PHY_TYPE_PARAM_UTMI;
	p->phy_utmi_width = 8;
	p->i2c_enable = false;
	p->reload_ctl = false;
	p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
		GAHBCFG_HBSTLEN_SHIFT;
	p->change_speed_quirk = true;
	p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
}

static void dwc2_set_jz4775_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->otg_caps.hnp_support = false;
	p->speed = DWC2_SPEED_PARAM_HIGH;
	p->phy_type = DWC2_PHY_TYPE_PARAM_UTMI;
	p->phy_utmi_width = 16;
	p->activate_ingenic_overcurrent_detection =
		!device_property_read_bool(hsotg->dev, "disable-over-current");
}

static void dwc2_set_loongson_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->phy_utmi_width = 8;
	p->power_down = DWC2_POWER_DOWN_PARAM_PARTIAL;
}

static void dwc2_set_x1600_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->otg_caps.hnp_support = false;
	p->speed = DWC2_SPEED_PARAM_HIGH;
	p->host_channels = 16;
	p->phy_type = DWC2_PHY_TYPE_PARAM_UTMI;
	p->phy_utmi_width = 16;
	p->activate_ingenic_overcurrent_detection =
		!device_property_read_bool(hsotg->dev, "disable-over-current");
}

static void dwc2_set_x2000_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->otg_caps.hnp_support = false;
	p->speed = DWC2_SPEED_PARAM_HIGH;
	p->host_rx_fifo_size = 1024;
	p->host_nperio_tx_fifo_size = 1024;
	p->host_perio_tx_fifo_size = 1024;
	p->host_channels = 16;
	p->phy_type = DWC2_PHY_TYPE_PARAM_UTMI;
	p->phy_utmi_width = 16;
	p->activate_ingenic_overcurrent_detection =
		!device_property_read_bool(hsotg->dev, "disable-over-current");
}

static void dwc2_set_s3c6400_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
	p->no_clock_gating = true;
	p->phy_utmi_width = 8;
}

static void dwc2_set_socfpga_agilex_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
	p->no_clock_gating = true;
}

static void dwc2_set_rk_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->otg_caps.hnp_support = false;
	p->otg_caps.srp_support = false;
	p->host_rx_fifo_size = 525;
	p->host_nperio_tx_fifo_size = 128;
	p->host_perio_tx_fifo_size = 256;
	p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
		GAHBCFG_HBSTLEN_SHIFT;
	p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
	p->lpm = false;
	p->lpm_clock_gating = false;
	p->besl = false;
	p->hird_threshold_en = false;
	p->no_clock_gating = true;
}

static void dwc2_set_ltq_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->otg_caps.hnp_support = false;
	p->otg_caps.srp_support = false;
	p->host_rx_fifo_size = 288;
	p->host_nperio_tx_fifo_size = 128;
	p->host_perio_tx_fifo_size = 96;
	p->max_transfer_size = 65535;
	p->max_packet_count = 511;
	p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
		GAHBCFG_HBSTLEN_SHIFT;
}

static void dwc2_set_amlogic_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->otg_caps.hnp_support = false;
	p->otg_caps.srp_support = false;
	p->speed = DWC2_SPEED_PARAM_HIGH;
	p->host_rx_fifo_size = 512;
	p->host_nperio_tx_fifo_size = 500;
	p->host_perio_tx_fifo_size = 500;
	p->host_channels = 16;
	p->phy_type = DWC2_PHY_TYPE_PARAM_UTMI;
	p->ahbcfg = GAHBCFG_HBSTLEN_INCR8 <<
		GAHBCFG_HBSTLEN_SHIFT;
	p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
}

static void dwc2_set_amlogic_g12a_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->lpm = false;
	p->lpm_clock_gating = false;
	p->besl = false;
	p->hird_threshold_en = false;
}

static void dwc2_set_amlogic_a1_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->otg_caps.hnp_support = false;
	p->otg_caps.srp_support = false;
	p->speed = DWC2_SPEED_PARAM_HIGH;
	p->host_rx_fifo_size = 192;
	p->host_nperio_tx_fifo_size = 128;
	p->host_perio_tx_fifo_size = 128;
	p->phy_type = DWC2_PHY_TYPE_PARAM_UTMI;
	p->phy_utmi_width = 8;
	p->ahbcfg = GAHBCFG_HBSTLEN_INCR8 << GAHBCFG_HBSTLEN_SHIFT;
	p->lpm = false;
	p->lpm_clock_gating = false;
	p->besl = false;
	p->hird_threshold_en = false;
}

static void dwc2_set_amcc_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT;
}

static void dwc2_set_cv1800_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->otg_caps.hnp_support = false;
	p->otg_caps.srp_support = false;
	p->host_dma = false;
	p->g_dma = false;
	p->speed = DWC2_SPEED_PARAM_HIGH;
	p->phy_type = DWC2_PHY_TYPE_PARAM_UTMI;
	p->phy_utmi_width = 16;
	p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT;
	p->lpm = false;
	p->lpm_clock_gating = false;
	p->besl = false;
	p->hird_threshold_en = false;
	p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
}

static void dwc2_set_stm32f4x9_fsotg_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->otg_caps.hnp_support = false;
	p->otg_caps.srp_support = false;
	p->speed = DWC2_SPEED_PARAM_FULL;
	p->host_rx_fifo_size = 128;
	p->host_nperio_tx_fifo_size = 96;
	p->host_perio_tx_fifo_size = 96;
	p->max_packet_count = 256;
	p->phy_type = DWC2_PHY_TYPE_PARAM_FS;
	p->i2c_enable = false;
	p->activate_stm_fs_transceiver = true;
}

static void dwc2_set_stm32f7_hsotg_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->host_rx_fifo_size = 622;
	p->host_nperio_tx_fifo_size = 128;
	p->host_perio_tx_fifo_size = 256;
}

static void dwc2_set_stm32mp15_fsotg_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->otg_caps.hnp_support = false;
	p->otg_caps.srp_support = false;
	p->otg_caps.otg_rev = 0x200;
	p->speed = DWC2_SPEED_PARAM_FULL;
	p->host_rx_fifo_size = 128;
	p->host_nperio_tx_fifo_size = 96;
	p->host_perio_tx_fifo_size = 96;
	p->max_packet_count = 256;
	p->phy_type = DWC2_PHY_TYPE_PARAM_FS;
	p->i2c_enable = false;
	p->activate_stm_fs_transceiver = true;
	p->activate_stm_id_vb_detection = true;
	p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT;
	p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
	p->host_support_fs_ls_low_power = true;
	p->host_ls_low_power_phy_clk = true;
}

static void dwc2_set_stm32mp15_hsotg_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->otg_caps.hnp_support = false;
	p->otg_caps.srp_support = false;
	p->otg_caps.otg_rev = 0x200;
	p->activate_stm_id_vb_detection = !device_property_read_bool(hsotg->dev, "usb-role-switch");
	p->host_rx_fifo_size = 440;
	p->host_nperio_tx_fifo_size = 256;
	p->host_perio_tx_fifo_size = 256;
	p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT;
	p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
	p->lpm = false;
	p->lpm_clock_gating = false;
	p->besl = false;
	p->hird_threshold_en = false;
}

const struct of_device_id dwc2_of_match_table[] = {
	{ .compatible = "brcm,bcm2835-usb", .data = dwc2_set_bcm_params },
	{ .compatible = "hisilicon,hi6220-usb", .data = dwc2_set_his_params },
	{ .compatible = "ingenic,jz4775-otg", .data = dwc2_set_jz4775_params },
	{ .compatible = "ingenic,jz4780-otg", .data = dwc2_set_jz4775_params },
	{ .compatible = "ingenic,x1000-otg", .data = dwc2_set_jz4775_params },
	{ .compatible = "ingenic,x1600-otg", .data = dwc2_set_x1600_params },
	{ .compatible = "ingenic,x1700-otg", .data = dwc2_set_x1600_params },
	{ .compatible = "ingenic,x1830-otg", .data = dwc2_set_x1600_params },
	{ .compatible = "ingenic,x2000-otg", .data = dwc2_set_x2000_params },
	{ .compatible = "rockchip,rk3066-usb", .data = dwc2_set_rk_params },
	{ .compatible = "lantiq,arx100-usb", .data = dwc2_set_ltq_params },
	{ .compatible = "lantiq,xrx200-usb", .data = dwc2_set_ltq_params },
	{ .compatible = "snps,dwc2" },
	{ .compatible = "samsung,s3c6400-hsotg",
	  .data = dwc2_set_s3c6400_params },
	{ .compatible = "amlogic,meson8-usb",
	  .data = dwc2_set_amlogic_params },
	{ .compatible = "amlogic,meson8b-usb",
	  .data = dwc2_set_amlogic_params },
	{ .compatible = "amlogic,meson-gxbb-usb",
	  .data = dwc2_set_amlogic_params },
	{ .compatible = "amlogic,meson-g12a-usb",
	  .data = dwc2_set_amlogic_g12a_params },
	{ .compatible = "amlogic,meson-a1-usb",
	  .data = dwc2_set_amlogic_a1_params },
	{ .compatible = "amcc,dwc-otg", .data = dwc2_set_amcc_params },
	{ .compatible = "apm,apm82181-dwc-otg", .data = dwc2_set_amcc_params },
	{ .compatible = "sophgo,cv1800-usb",
	  .data = dwc2_set_cv1800_params },
	{ .compatible = "st,stm32f4x9-fsotg",
	  .data = dwc2_set_stm32f4x9_fsotg_params },
	{ .compatible = "st,stm32f4x9-hsotg" },
	{ .compatible = "st,stm32f7-hsotg",
	  .data = dwc2_set_stm32f7_hsotg_params },
	{ .compatible = "st,stm32mp15-fsotg",
	  .data = dwc2_set_stm32mp15_fsotg_params },
	{ .compatible = "st,stm32mp15-hsotg",
	  .data = dwc2_set_stm32mp15_hsotg_params },
	{ .compatible = "intel,socfpga-agilex-hsotg",
	  .data = dwc2_set_socfpga_agilex_params },
	{},
};
MODULE_DEVICE_TABLE(of, dwc2_of_match_table);

const struct acpi_device_id dwc2_acpi_match[] = {
	{ "BCM2848", (kernel_ulong_t)dwc2_set_bcm_params },
	{ },
};
MODULE_DEVICE_TABLE(acpi, dwc2_acpi_match);

const struct pci_device_id dwc2_pci_ids[] = {
	{
		PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_PRODUCT_ID_HAPS_HSOTG),
	},
	{
		PCI_DEVICE(PCI_VENDOR_ID_STMICRO,
			   PCI_DEVICE_ID_STMICRO_USB_OTG),
	},
	{
		PCI_DEVICE(PCI_VENDOR_ID_LOONGSON, PCI_DEVICE_ID_LOONGSON_DWC2),
		.driver_data = (unsigned long)dwc2_set_loongson_params,
	},
	{ /* end: all zeroes */ }
};
MODULE_DEVICE_TABLE(pci, dwc2_pci_ids);
EXPORT_SYMBOL_GPL(dwc2_pci_ids);

static void dwc2_set_param_otg_cap(struct dwc2_hsotg *hsotg)
{
	switch (hsotg->hw_params.op_mode) {
	case GHWCFG2_OP_MODE_HNP_SRP_CAPABLE:
		hsotg->params.otg_caps.hnp_support = true;
		hsotg->params.otg_caps.srp_support = true;
		break;
	case GHWCFG2_OP_MODE_SRP_ONLY_CAPABLE:
	case GHWCFG2_OP_MODE_SRP_CAPABLE_DEVICE:
	case GHWCFG2_OP_MODE_SRP_CAPABLE_HOST:
		hsotg->params.otg_caps.hnp_support = false;
		hsotg->params.otg_caps.srp_support = true;
		break;
	default:
		hsotg->params.otg_caps.hnp_support = false;
		hsotg->params.otg_caps.srp_support = false;
		break;
	}
}

static void dwc2_set_param_phy_type(struct dwc2_hsotg *hsotg)
{
	int val;
	u32 hs_phy_type = hsotg->hw_params.hs_phy_type;

	val = DWC2_PHY_TYPE_PARAM_FS;
	if (hs_phy_type != GHWCFG2_HS_PHY_TYPE_NOT_SUPPORTED) {
		if (hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI ||
		    hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI_ULPI)
			val = DWC2_PHY_TYPE_PARAM_UTMI;
		else
			val = DWC2_PHY_TYPE_PARAM_ULPI;
	}

	if (dwc2_is_fs_iot(hsotg))
		hsotg->params.phy_type = DWC2_PHY_TYPE_PARAM_FS;

	hsotg->params.phy_type = val;
}

static void dwc2_set_param_speed(struct dwc2_hsotg *hsotg)
{
	int val;

	val = hsotg->params.phy_type == DWC2_PHY_TYPE_PARAM_FS ?
		DWC2_SPEED_PARAM_FULL : DWC2_SPEED_PARAM_HIGH;

	if (dwc2_is_fs_iot(hsotg))
		val = DWC2_SPEED_PARAM_FULL;

	if (dwc2_is_hs_iot(hsotg))
		val = DWC2_SPEED_PARAM_HIGH;

	hsotg->params.speed = val;
}

static void dwc2_set_param_phy_utmi_width(struct dwc2_hsotg *hsotg)
{
	int val;

	val = (hsotg->hw_params.utmi_phy_data_width ==
	       GHWCFG4_UTMI_PHY_DATA_WIDTH_8) ? 8 : 16;

	if (hsotg->phy) {
		/*
		 * If using the generic PHY framework, check if the PHY bus
		 * width is 8-bit and set the phyif appropriately.
		 */
		if (phy_get_bus_width(hsotg->phy) == 8)
			val = 8;
	}

	hsotg->params.phy_utmi_width = val;
}

static void dwc2_set_param_tx_fifo_sizes(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;
	int depth_average;
	int fifo_count;
	int i;

	fifo_count = dwc2_hsotg_tx_fifo_count(hsotg);

	memset(p->g_tx_fifo_size, 0, sizeof(p->g_tx_fifo_size));
	depth_average = dwc2_hsotg_tx_fifo_average_depth(hsotg);
	for (i = 1; i <= fifo_count; i++)
		p->g_tx_fifo_size[i] = depth_average;
}

static void dwc2_set_param_power_down(struct dwc2_hsotg *hsotg)
{
	int val;

	if (hsotg->hw_params.hibernation)
		val = DWC2_POWER_DOWN_PARAM_HIBERNATION;
	else if (hsotg->hw_params.power_optimized)
		val = DWC2_POWER_DOWN_PARAM_PARTIAL;
	else
		val = DWC2_POWER_DOWN_PARAM_NONE;

	hsotg->params.power_down = val;
}

static void dwc2_set_param_lpm(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;

	p->lpm = hsotg->hw_params.lpm_mode;
	if (p->lpm) {
		p->lpm_clock_gating = true;
		p->besl = true;
		p->hird_threshold_en = true;
		p->hird_threshold = 4;
	} else {
		p->lpm_clock_gating = false;
		p->besl = false;
		p->hird_threshold_en = false;
	}
}

/**
 * dwc2_set_default_params() - Set all core parameters to their
 * auto-detected default values.
 *
 * @hsotg: Programming view of the DWC_otg controller
 *
 */
static void dwc2_set_default_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_hw_params *hw = &hsotg->hw_params;
	struct dwc2_core_params *p = &hsotg->params;
	bool dma_capable = !(hw->arch == GHWCFG2_SLAVE_ONLY_ARCH);

	dwc2_set_param_otg_cap(hsotg);
	dwc2_set_param_phy_type(hsotg);
	dwc2_set_param_speed(hsotg);
	dwc2_set_param_phy_utmi_width(hsotg);
	dwc2_set_param_power_down(hsotg);
	dwc2_set_param_lpm(hsotg);
	p->phy_ulpi_ddr = false;
	p->phy_ulpi_ext_vbus = false;
	p->eusb2_disc = false;

	p->enable_dynamic_fifo = hw->enable_dynamic_fifo;
	p->en_multiple_tx_fifo = hw->en_multiple_tx_fifo;
	p->i2c_enable = hw->i2c_enable;
	p->acg_enable = hw->acg_enable;
	p->ulpi_fs_ls = false;
	p->ts_dline = false;
	p->reload_ctl = (hw->snpsid >= DWC2_CORE_REV_2_92a);
	p->uframe_sched = true;
	p->external_id_pin_ctl = false;
	p->ipg_isoc_en = false;
	p->service_interval = false;
	p->max_packet_count = hw->max_packet_count;
	p->max_transfer_size = hw->max_transfer_size;
	p->ahbcfg = GAHBCFG_HBSTLEN_INCR << GAHBCFG_HBSTLEN_SHIFT;
	p->ref_clk_per = 33333;
	p->sof_cnt_wkup_alert = 100;

	if ((hsotg->dr_mode == USB_DR_MODE_HOST) ||
	    (hsotg->dr_mode == USB_DR_MODE_OTG)) {
		p->host_dma = dma_capable;
		p->dma_desc_enable = false;
		p->dma_desc_fs_enable = false;
		p->host_support_fs_ls_low_power = false;
		p->host_ls_low_power_phy_clk = false;
		p->host_channels = hw->host_channels;
		p->host_rx_fifo_size = hw->rx_fifo_size;
		p->host_nperio_tx_fifo_size = hw->host_nperio_tx_fifo_size;
		p->host_perio_tx_fifo_size = hw->host_perio_tx_fifo_size;
	}

	if ((hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) ||
	    (hsotg->dr_mode == USB_DR_MODE_OTG)) {
		p->g_dma = dma_capable;
		p->g_dma_desc = hw->dma_desc_enable;

		/*
		 * The values for g_rx_fifo_size (2048) and
		 * g_np_tx_fifo_size (1024) come from the legacy s3c
		 * gadget driver. These defaults have been hard-coded
		 * for some time so many platforms depend on these
		 * values. Leave them as defaults for now and only
		 * auto-detect if the hardware does not support the
		 * default.
		 */
		p->g_rx_fifo_size = 2048;
		p->g_np_tx_fifo_size = 1024;
		dwc2_set_param_tx_fifo_sizes(hsotg);
	}
}

/**
 * dwc2_get_device_properties() - Read in device properties.
 *
 * @hsotg: Programming view of the DWC_otg controller
 *
 * Read in the device properties and adjust core parameters if needed.
 */
static void dwc2_get_device_properties(struct dwc2_hsotg *hsotg)
{
	struct dwc2_core_params *p = &hsotg->params;
	int num;

	if ((hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) ||
	    (hsotg->dr_mode == USB_DR_MODE_OTG)) {
		device_property_read_u32(hsotg->dev, "g-rx-fifo-size",
					 &p->g_rx_fifo_size);

		device_property_read_u32(hsotg->dev, "g-np-tx-fifo-size",
					 &p->g_np_tx_fifo_size);

		num = device_property_count_u32(hsotg->dev, "g-tx-fifo-size");
		if (num > 0) {
			num = min(num, 15);
			memset(p->g_tx_fifo_size, 0,
			       sizeof(p->g_tx_fifo_size));
			device_property_read_u32_array(hsotg->dev,
						       "g-tx-fifo-size",
						       &p->g_tx_fifo_size[1],
						       num);
		}

		of_usb_update_otg_caps(hsotg->dev->of_node, &p->otg_caps);
	}

	p->oc_disable = of_property_read_bool(hsotg->dev->of_node, "disable-over-current");
}

static void dwc2_check_param_otg_cap(struct dwc2_hsotg *hsotg)
{
	int valid = 1;

	if (hsotg->params.otg_caps.hnp_support && hsotg->params.otg_caps.srp_support) {
		/* check HNP && SRP capable */
		if (hsotg->hw_params.op_mode != GHWCFG2_OP_MODE_HNP_SRP_CAPABLE)
			valid = 0;
	} else if (!hsotg->params.otg_caps.hnp_support) {
		/* check SRP only capable */
		if (hsotg->params.otg_caps.srp_support) {
			switch (hsotg->hw_params.op_mode) {
			case GHWCFG2_OP_MODE_HNP_SRP_CAPABLE:
			case GHWCFG2_OP_MODE_SRP_ONLY_CAPABLE:
			case GHWCFG2_OP_MODE_SRP_CAPABLE_DEVICE:
			case GHWCFG2_OP_MODE_SRP_CAPABLE_HOST:
				break;
			default:
				valid = 0;
				break;
			}
		}
		/* else: NO HNP && NO SRP capable: always valid */
	} else {
		valid = 0;
	}

	if (!valid)
		dwc2_set_param_otg_cap(hsotg);
}

static void dwc2_check_param_phy_type(struct dwc2_hsotg *hsotg)
{
	int valid = 0;
	u32 hs_phy_type;
	u32 fs_phy_type;

	hs_phy_type = hsotg->hw_params.hs_phy_type;
	fs_phy_type = hsotg->hw_params.fs_phy_type;

	switch (hsotg->params.phy_type) {
	case DWC2_PHY_TYPE_PARAM_FS:
		if (fs_phy_type == GHWCFG2_FS_PHY_TYPE_DEDICATED)
			valid = 1;
		break;
	case DWC2_PHY_TYPE_PARAM_UTMI:
		if ((hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI) ||
		    (hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI_ULPI))
			valid = 1;
		break;
	case DWC2_PHY_TYPE_PARAM_ULPI:
		if ((hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI) ||
		    (hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI_ULPI))
			valid = 1;
		break;
	default:
		break;
	}

	if (!valid)
		dwc2_set_param_phy_type(hsotg);
}

static void dwc2_check_param_speed(struct dwc2_hsotg *hsotg)
{
	int valid = 1;
	int phy_type = hsotg->params.phy_type;
	int speed = hsotg->params.speed;

	switch (speed) {
	case DWC2_SPEED_PARAM_HIGH:
		if ((hsotg->params.speed == DWC2_SPEED_PARAM_HIGH) &&
		    (phy_type == DWC2_PHY_TYPE_PARAM_FS))
			valid = 0;
		break;
	case DWC2_SPEED_PARAM_FULL:
	case DWC2_SPEED_PARAM_LOW:
		break;
	default:
		valid = 0;
		break;
	}

	if (!valid)
		dwc2_set_param_speed(hsotg);
}

static void dwc2_check_param_phy_utmi_width(struct dwc2_hsotg *hsotg)
{
	int valid = 0;
	int param = hsotg->params.phy_utmi_width;
	int width = hsotg->hw_params.utmi_phy_data_width;

	switch (width) {
	case GHWCFG4_UTMI_PHY_DATA_WIDTH_8:
		valid = (param == 8);
		break;
	case GHWCFG4_UTMI_PHY_DATA_WIDTH_16:
		valid = (param == 16);
		break;
	case GHWCFG4_UTMI_PHY_DATA_WIDTH_8_OR_16:
		valid = (param == 8 || param == 16);
		break;
	}

	if (!valid)
		dwc2_set_param_phy_utmi_width(hsotg);
}

static void dwc2_check_param_power_down(struct dwc2_hsotg *hsotg)
{
	int param = hsotg->params.power_down;

	switch (param) {
	case DWC2_POWER_DOWN_PARAM_NONE:
		break;
	case DWC2_POWER_DOWN_PARAM_PARTIAL:
		if (hsotg->hw_params.power_optimized)
			break;
		dev_dbg(hsotg->dev,
			"Partial power down isn't supported by HW\n");
		param = DWC2_POWER_DOWN_PARAM_NONE;
		break;
	case DWC2_POWER_DOWN_PARAM_HIBERNATION:
		if (hsotg->hw_params.hibernation)
			break;
		dev_dbg(hsotg->dev,
			"Hibernation isn't supported by HW\n");
		param = DWC2_POWER_DOWN_PARAM_NONE;
		break;
	default:
		dev_err(hsotg->dev,
			"%s: Invalid parameter power_down=%d\n",
			__func__, param);
		param = DWC2_POWER_DOWN_PARAM_NONE;
		break;
	}

	hsotg->params.power_down = param;
}

static void dwc2_check_param_tx_fifo_sizes(struct dwc2_hsotg *hsotg)
{
	int fifo_count;
	int fifo;
	int min;
	u32 total = 0;
	u32 dptxfszn;

	fifo_count = dwc2_hsotg_tx_fifo_count(hsotg);
	min = hsotg->hw_params.en_multiple_tx_fifo ? 16 : 4;

	for (fifo = 1; fifo <= fifo_count; fifo++)
		total += hsotg->params.g_tx_fifo_size[fifo];

	if (total > dwc2_hsotg_tx_fifo_total_depth(hsotg) || !total) {
		dev_warn(hsotg->dev, "%s: Invalid parameter g-tx-fifo-size, setting to default average\n",
			 __func__);
		dwc2_set_param_tx_fifo_sizes(hsotg);
	}

	for (fifo = 1; fifo <= fifo_count; fifo++) {
		dptxfszn = hsotg->hw_params.g_tx_fifo_size[fifo];

		if (hsotg->params.g_tx_fifo_size[fifo] < min ||
		    hsotg->params.g_tx_fifo_size[fifo] >  dptxfszn) {
			dev_warn(hsotg->dev, "%s: Invalid parameter g_tx_fifo_size[%d]=%d\n",
				 __func__, fifo,
				 hsotg->params.g_tx_fifo_size[fifo]);
			hsotg->params.g_tx_fifo_size[fifo] = dptxfszn;
		}
	}
}

static void dwc2_check_param_eusb2_disc(struct dwc2_hsotg *hsotg)
{
	u32 gsnpsid;

	if (!hsotg->params.eusb2_disc)
		return;
	gsnpsid = dwc2_readl(hsotg, GSNPSID);
	/*
	 * eusb2_disc not supported by FS IOT devices.
	 * For other cores, it supported starting from version 5.00a
	 */
	if ((gsnpsid & ~DWC2_CORE_REV_MASK) == DWC2_FS_IOT_ID ||
	    (gsnpsid & DWC2_CORE_REV_MASK) <
	    (DWC2_CORE_REV_5_00a & DWC2_CORE_REV_MASK)) {
		hsotg->params.eusb2_disc = false;
		return;
	}
}

#define CHECK_RANGE(_param, _min, _max, _def) do {			\
		if ((int)(hsotg->params._param) < (_min) ||		\
		    (hsotg->params._param) > (_max)) {			\
			dev_warn(hsotg->dev, "%s: Invalid parameter %s=%d\n", \
				 __func__, #_param, hsotg->params._param); \
			hsotg->params._param = (_def);			\
		}							\
	} while (0)

#define CHECK_BOOL(_param, _check) do {					\
		if (hsotg->params._param && !(_check)) {		\
			dev_warn(hsotg->dev, "%s: Invalid parameter %s=%d\n", \
				 __func__, #_param, hsotg->params._param); \
			hsotg->params._param = false;			\
		}							\
	} while (0)

static void dwc2_check_params(struct dwc2_hsotg *hsotg)
{
	struct dwc2_hw_params *hw = &hsotg->hw_params;
	struct dwc2_core_params *p = &hsotg->params;
	bool dma_capable = !(hw->arch == GHWCFG2_SLAVE_ONLY_ARCH);

	dwc2_check_param_otg_cap(hsotg);
	dwc2_check_param_phy_type(hsotg);
	dwc2_check_param_speed(hsotg);
	dwc2_check_param_phy_utmi_width(hsotg);
	dwc2_check_param_power_down(hsotg);
	dwc2_check_param_eusb2_disc(hsotg);

	CHECK_BOOL(enable_dynamic_fifo, hw->enable_dynamic_fifo);
	CHECK_BOOL(en_multiple_tx_fifo, hw->en_multiple_tx_fifo);
	CHECK_BOOL(i2c_enable, hw->i2c_enable);
	CHECK_BOOL(ipg_isoc_en, hw->ipg_isoc_en);
	CHECK_BOOL(acg_enable, hw->acg_enable);
	CHECK_BOOL(reload_ctl, (hsotg->hw_params.snpsid > DWC2_CORE_REV_2_92a));
	CHECK_BOOL(lpm, (hsotg->hw_params.snpsid >= DWC2_CORE_REV_2_80a));
	CHECK_BOOL(lpm, hw->lpm_mode);
	CHECK_BOOL(lpm_clock_gating, hsotg->params.lpm);
	CHECK_BOOL(besl, hsotg->params.lpm);
	CHECK_BOOL(besl, (hsotg->hw_params.snpsid >= DWC2_CORE_REV_3_00a));
	CHECK_BOOL(hird_threshold_en, hsotg->params.lpm);
	CHECK_RANGE(hird_threshold, 0, hsotg->params.besl ? 12 : 7, 0);
	CHECK_BOOL(service_interval, hw->service_interval_mode);
	CHECK_RANGE(max_packet_count,
		    15, hw->max_packet_count,
		    hw->max_packet_count);
	CHECK_RANGE(max_transfer_size,
		    2047, hw->max_transfer_size,
		    hw->max_transfer_size);

	if ((hsotg->dr_mode == USB_DR_MODE_HOST) ||
	    (hsotg->dr_mode == USB_DR_MODE_OTG)) {
		CHECK_BOOL(host_dma, dma_capable);
		CHECK_BOOL(dma_desc_enable, p->host_dma);
		CHECK_BOOL(dma_desc_fs_enable, p->dma_desc_enable);
		CHECK_BOOL(host_ls_low_power_phy_clk,
			   p->phy_type == DWC2_PHY_TYPE_PARAM_FS);
		CHECK_RANGE(host_channels,
			    1, hw->host_channels,
			    hw->host_channels);
		CHECK_RANGE(host_rx_fifo_size,
			    16, hw->rx_fifo_size,
			    hw->rx_fifo_size);
		CHECK_RANGE(host_nperio_tx_fifo_size,
			    16, hw->host_nperio_tx_fifo_size,
			    hw->host_nperio_tx_fifo_size);
		CHECK_RANGE(host_perio_tx_fifo_size,
			    16, hw->host_perio_tx_fifo_size,
			    hw->host_perio_tx_fifo_size);
	}

	if ((hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) ||
	    (hsotg->dr_mode == USB_DR_MODE_OTG)) {
		CHECK_BOOL(g_dma, dma_capable);
		CHECK_BOOL(g_dma_desc, (p->g_dma && hw->dma_desc_enable));
		CHECK_RANGE(g_rx_fifo_size,
			    16, hw->rx_fifo_size,
			    hw->rx_fifo_size);
		CHECK_RANGE(g_np_tx_fifo_size,
			    16, hw->dev_nperio_tx_fifo_size,
			    hw->dev_nperio_tx_fifo_size);
		dwc2_check_param_tx_fifo_sizes(hsotg);
	}
}

/*
 * Gets host hardware parameters. Forces host mode if not currently in
 * host mode. Should be called immediately after a core soft reset in
 * order to get the reset values.
 */
static void dwc2_get_host_hwparams(struct dwc2_hsotg *hsotg)
{
	struct dwc2_hw_params *hw = &hsotg->hw_params;
	u32 gnptxfsiz;
	u32 hptxfsiz;

	if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL)
		return;

	dwc2_force_mode(hsotg, true);

	gnptxfsiz = dwc2_readl(hsotg, GNPTXFSIZ);
	hptxfsiz = dwc2_readl(hsotg, HPTXFSIZ);

	hw->host_nperio_tx_fifo_size = (gnptxfsiz & FIFOSIZE_DEPTH_MASK) >>
				       FIFOSIZE_DEPTH_SHIFT;
	hw->host_perio_tx_fifo_size = (hptxfsiz & FIFOSIZE_DEPTH_MASK) >>
				      FIFOSIZE_DEPTH_SHIFT;
}

/*
 * Gets device hardware parameters. Forces device mode if not
 * currently in device mode. Should be called immediately after a core
 * soft reset in order to get the reset values.
 */
static void dwc2_get_dev_hwparams(struct dwc2_hsotg *hsotg)
{
	struct dwc2_hw_params *hw = &hsotg->hw_params;
	u32 gnptxfsiz;
	int fifo, fifo_count;

	if (hsotg->dr_mode == USB_DR_MODE_HOST)
		return;

	dwc2_force_mode(hsotg, false);

	gnptxfsiz = dwc2_readl(hsotg, GNPTXFSIZ);

	fifo_count = dwc2_hsotg_tx_fifo_count(hsotg);

	for (fifo = 1; fifo <= fifo_count; fifo++) {
		hw->g_tx_fifo_size[fifo] =
			(dwc2_readl(hsotg, DPTXFSIZN(fifo)) &
			 FIFOSIZE_DEPTH_MASK) >> FIFOSIZE_DEPTH_SHIFT;
	}

	hw->dev_nperio_tx_fifo_size = (gnptxfsiz & FIFOSIZE_DEPTH_MASK) >>
				       FIFOSIZE_DEPTH_SHIFT;
}

/**
 * dwc2_get_hwparams() - During device initialization, read various hardware
 *                       configuration registers and interpret the contents.
 *
 * @hsotg: Programming view of the DWC_otg controller
 *
 */
int dwc2_get_hwparams(struct dwc2_hsotg *hsotg)
{
	struct dwc2_hw_params *hw = &hsotg->hw_params;
	unsigned int width;
	u32 hwcfg1, hwcfg2, hwcfg3, hwcfg4;
	u32 grxfsiz;

	hwcfg1 = dwc2_readl(hsotg, GHWCFG1);
	hwcfg2 = dwc2_readl(hsotg, GHWCFG2);
	hwcfg3 = dwc2_readl(hsotg, GHWCFG3);
	hwcfg4 = dwc2_readl(hsotg, GHWCFG4);
	grxfsiz = dwc2_readl(hsotg, GRXFSIZ);

	/* hwcfg1 */
	hw->dev_ep_dirs = hwcfg1;

	/* hwcfg2 */
	hw->op_mode = (hwcfg2 & GHWCFG2_OP_MODE_MASK) >>
		      GHWCFG2_OP_MODE_SHIFT;
	hw->arch = (hwcfg2 & GHWCFG2_ARCHITECTURE_MASK) >>
		   GHWCFG2_ARCHITECTURE_SHIFT;
	hw->enable_dynamic_fifo = !!(hwcfg2 & GHWCFG2_DYNAMIC_FIFO);
	hw->host_channels = 1 + ((hwcfg2 & GHWCFG2_NUM_HOST_CHAN_MASK) >>
				GHWCFG2_NUM_HOST_CHAN_SHIFT);
	hw->hs_phy_type = (hwcfg2 & GHWCFG2_HS_PHY_TYPE_MASK) >>
			  GHWCFG2_HS_PHY_TYPE_SHIFT;
	hw->fs_phy_type = (hwcfg2 & GHWCFG2_FS_PHY_TYPE_MASK) >>
			  GHWCFG2_FS_PHY_TYPE_SHIFT;
	hw->num_dev_ep = (hwcfg2 & GHWCFG2_NUM_DEV_EP_MASK) >>
			 GHWCFG2_NUM_DEV_EP_SHIFT;
	hw->nperio_tx_q_depth =
		(hwcfg2 & GHWCFG2_NONPERIO_TX_Q_DEPTH_MASK) >>
		GHWCFG2_NONPERIO_TX_Q_DEPTH_SHIFT << 1;
	hw->host_perio_tx_q_depth =
		(hwcfg2 & GHWCFG2_HOST_PERIO_TX_Q_DEPTH_MASK) >>
		GHWCFG2_HOST_PERIO_TX_Q_DEPTH_SHIFT << 1;
	hw->dev_token_q_depth =
		(hwcfg2 & GHWCFG2_DEV_TOKEN_Q_DEPTH_MASK) >>
		GHWCFG2_DEV_TOKEN_Q_DEPTH_SHIFT;

	/* hwcfg3 */
	width = (hwcfg3 & GHWCFG3_XFER_SIZE_CNTR_WIDTH_MASK) >>
		GHWCFG3_XFER_SIZE_CNTR_WIDTH_SHIFT;
	hw->max_transfer_size = (1 << (width + 11)) - 1;
	width = (hwcfg3 & GHWCFG3_PACKET_SIZE_CNTR_WIDTH_MASK) >>
		GHWCFG3_PACKET_SIZE_CNTR_WIDTH_SHIFT;
	hw->max_packet_count = (1 << (width + 4)) - 1;
	hw->i2c_enable = !!(hwcfg3 & GHWCFG3_I2C);
	hw->total_fifo_size = (hwcfg3 & GHWCFG3_DFIFO_DEPTH_MASK) >>
			      GHWCFG3_DFIFO_DEPTH_SHIFT;
	hw->lpm_mode = !!(hwcfg3 & GHWCFG3_OTG_LPM_EN);

	/* hwcfg4 */
	hw->en_multiple_tx_fifo = !!(hwcfg4 & GHWCFG4_DED_FIFO_EN);
	hw->num_dev_perio_in_ep = (hwcfg4 & GHWCFG4_NUM_DEV_PERIO_IN_EP_MASK) >>
				  GHWCFG4_NUM_DEV_PERIO_IN_EP_SHIFT;
	hw->num_dev_in_eps = (hwcfg4 & GHWCFG4_NUM_IN_EPS_MASK) >>
			     GHWCFG4_NUM_IN_EPS_SHIFT;
	hw->dma_desc_enable = !!(hwcfg4 & GHWCFG4_DESC_DMA);
	hw->power_optimized = !!(hwcfg4 & GHWCFG4_POWER_OPTIMIZ);
	hw->hibernation = !!(hwcfg4 & GHWCFG4_HIBER);
	hw->utmi_phy_data_width = (hwcfg4 & GHWCFG4_UTMI_PHY_DATA_WIDTH_MASK) >>
				  GHWCFG4_UTMI_PHY_DATA_WIDTH_SHIFT;
	hw->acg_enable = !!(hwcfg4 & GHWCFG4_ACG_SUPPORTED);
	hw->ipg_isoc_en = !!(hwcfg4 & GHWCFG4_IPG_ISOC_SUPPORTED);
	hw->service_interval_mode = !!(hwcfg4 &
				       GHWCFG4_SERVICE_INTERVAL_SUPPORTED);

	/* fifo sizes */
	hw->rx_fifo_size = (grxfsiz & GRXFSIZ_DEPTH_MASK) >>
				GRXFSIZ_DEPTH_SHIFT;
	/*
	 * Host specific hardware parameters. Reading these parameters
	 * requires the controller to be in host mode. The mode will
	 * be forced, if necessary, to read these values.
	 */
	dwc2_get_host_hwparams(hsotg);
	dwc2_get_dev_hwparams(hsotg);

	return 0;
}

typedef void (*set_params_cb)(struct dwc2_hsotg *data);

int dwc2_init_params(struct dwc2_hsotg *hsotg)
{
	set_params_cb set_params;

	dwc2_set_default_params(hsotg);
	dwc2_get_device_properties(hsotg);

	set_params = device_get_match_data(hsotg->dev);
	if (set_params) {
		set_params(hsotg);
	} else {
		const struct pci_device_id *pmatch =
			pci_match_id(dwc2_pci_ids, to_pci_dev(hsotg->dev->parent));

		if (pmatch && pmatch->driver_data) {
			set_params = (set_params_cb)pmatch->driver_data;
			set_params(hsotg);
		}
	}

	dwc2_check_params(hsotg);

	return 0;
}