aboutsummaryrefslogtreecommitdiff
path: root/drivers/pcmcia/m8xx_pcmcia.c
blob: 25e5e30a18afdd6bafaae72e1c06314f42c9efb0 (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
/*
 * m8xx_pcmcia.c - Linux PCMCIA socket driver for the mpc8xx series.
 *
 * (C) 1999-2000 Magnus Damm <damm@opensource.se>
 * (C) 2001-2002 Montavista Software, Inc.
 *     <mlocke@mvista.com>
 *
 * Support for two slots by Cyclades Corporation
 *     <oliver.kurth@cyclades.de>
 * Further fixes, v2.6 kernel port
 *     <marcelo.tosatti@cyclades.com>
 * 
 * Some fixes, additions (C) 2005-2007 Montavista Software, Inc.
 *     <vbordug@ru.mvista.com>
 *
 * "The ExCA standard specifies that socket controllers should provide
 * two IO and five memory windows per socket, which can be independently
 * configured and positioned in the host address space and mapped to
 * arbitrary segments of card address space. " - David A Hinds. 1999
 *
 * This controller does _not_ meet the ExCA standard.
 *
 * m8xx pcmcia controller brief info:
 * + 8 windows (attrib, mem, i/o)
 * + up to two slots (SLOT_A and SLOT_B)
 * + inputpins, outputpins, event and mask registers.
 * - no offset register. sigh.
 *
 * Because of the lacking offset register we must map the whole card.
 * We assign each memory window PCMCIA_MEM_WIN_SIZE address space.
 * Make sure there is (PCMCIA_MEM_WIN_SIZE * PCMCIA_MEM_WIN_NO
 * * PCMCIA_SOCKETS_NO) bytes at PCMCIA_MEM_WIN_BASE.
 * The i/o windows are dynamically allocated at PCMCIA_IO_WIN_BASE.
 * They are maximum 64KByte each...
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/fcntl.h>
#include <linux/string.h>

#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/timer.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/fsl_devices.h>
#include <linux/bitops.h>
#include <linux/of_device.h>
#include <linux/of_platform.h>

#include <asm/io.h>
#include <asm/system.h>
#include <asm/time.h>
#include <asm/mpc8xx.h>
#include <asm/8xx_immap.h>
#include <asm/irq.h>
#include <asm/fs_pd.h>

#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/ss.h>

#define pcmcia_info(args...) printk(KERN_INFO "m8xx_pcmcia: "args)
#define pcmcia_error(args...) printk(KERN_ERR "m8xx_pcmcia: "args)

static const char *version = "Version 0.06, Aug 2005";
MODULE_LICENSE("Dual MPL/GPL");

#if !defined(CONFIG_PCMCIA_SLOT_A) && !defined(CONFIG_PCMCIA_SLOT_B)

/* The RPX series use SLOT_B */
#if defined(CONFIG_RPXCLASSIC) || defined(CONFIG_RPXLITE)
#define CONFIG_PCMCIA_SLOT_B
#define CONFIG_BD_IS_MHZ
#endif

/* The ADS board use SLOT_A */
#ifdef CONFIG_ADS
#define CONFIG_PCMCIA_SLOT_A
#define CONFIG_BD_IS_MHZ
#endif

/* The FADS series are a mess */
#ifdef CONFIG_FADS
#if defined(CONFIG_MPC860T) || defined(CONFIG_MPC860) || defined(CONFIG_MPC821)
#define CONFIG_PCMCIA_SLOT_A
#else
#define CONFIG_PCMCIA_SLOT_B
#endif
#endif

#if defined(CONFIG_MPC885ADS)
#define CONFIG_PCMCIA_SLOT_A
#define PCMCIA_GLITCHY_CD
#endif

/* Cyclades ACS uses both slots */
#ifdef CONFIG_PRxK
#define CONFIG_PCMCIA_SLOT_A
#define CONFIG_PCMCIA_SLOT_B
#endif

#endif				/* !defined(CONFIG_PCMCIA_SLOT_A) && !defined(CONFIG_PCMCIA_SLOT_B) */

#if defined(CONFIG_PCMCIA_SLOT_A) && defined(CONFIG_PCMCIA_SLOT_B)

#define PCMCIA_SOCKETS_NO 2
/* We have only 8 windows, dualsocket support will be limited. */
#define PCMCIA_MEM_WIN_NO 2
#define PCMCIA_IO_WIN_NO  2
#define PCMCIA_SLOT_MSG "SLOT_A and SLOT_B"

#elif defined(CONFIG_PCMCIA_SLOT_A) || defined(CONFIG_PCMCIA_SLOT_B)

#define PCMCIA_SOCKETS_NO 1
/* full support for one slot */
#define PCMCIA_MEM_WIN_NO 5
#define PCMCIA_IO_WIN_NO  2

/* define _slot_ to be able to optimize macros */

#ifdef CONFIG_PCMCIA_SLOT_A
#define _slot_ 0
#define PCMCIA_SLOT_MSG "SLOT_A"
#else
#define _slot_ 1
#define PCMCIA_SLOT_MSG "SLOT_B"
#endif

#else
#error m8xx_pcmcia: Bad configuration!
#endif

/* ------------------------------------------------------------------------- */

#define PCMCIA_MEM_WIN_BASE 0xe0000000	/* base address for memory window 0   */
#define PCMCIA_MEM_WIN_SIZE 0x04000000	/* each memory window is 64 MByte     */
#define PCMCIA_IO_WIN_BASE  _IO_BASE	/* base address for io window 0       */
/* ------------------------------------------------------------------------- */

static int pcmcia_schlvl;

static DEFINE_SPINLOCK(events_lock);

#define PCMCIA_SOCKET_KEY_5V 1
#define PCMCIA_SOCKET_KEY_LV 2

/* look up table for pgcrx registers */
static u32 *m8xx_pgcrx[2];

/*
 * This structure is used to address each window in the PCMCIA controller.
 *
 * Keep in mind that we assume that pcmcia_win[n+1] is mapped directly
 * after pcmcia_win[n]...
 */

struct pcmcia_win {
	u32 br;
	u32 or;
};

/*
 * For some reason the hardware guys decided to make both slots share
 * some registers.
 *
 * Could someone invent object oriented hardware ?
 *
 * The macros are used to get the right bit from the registers.
 * SLOT_A : slot = 0
 * SLOT_B : slot = 1
 */

#define M8XX_PCMCIA_VS1(slot)      (0x80000000 >> (slot << 4))
#define M8XX_PCMCIA_VS2(slot)      (0x40000000 >> (slot << 4))
#define M8XX_PCMCIA_VS_MASK(slot)  (0xc0000000 >> (slot << 4))
#define M8XX_PCMCIA_VS_SHIFT(slot) (30 - (slot << 4))

#define M8XX_PCMCIA_WP(slot)       (0x20000000 >> (slot << 4))
#define M8XX_PCMCIA_CD2(slot)      (0x10000000 >> (slot << 4))
#define M8XX_PCMCIA_CD1(slot)      (0x08000000 >> (slot << 4))
#define M8XX_PCMCIA_BVD2(slot)     (0x04000000 >> (slot << 4))
#define M8XX_PCMCIA_BVD1(slot)     (0x02000000 >> (slot << 4))
#define M8XX_PCMCIA_RDY(slot)      (0x01000000 >> (slot << 4))
#define M8XX_PCMCIA_RDY_L(slot)    (0x00800000 >> (slot << 4))
#define M8XX_PCMCIA_RDY_H(slot)    (0x00400000 >> (slot << 4))
#define M8XX_PCMCIA_RDY_R(slot)    (0x00200000 >> (slot << 4))
#define M8XX_PCMCIA_RDY_F(slot)    (0x00100000 >> (slot << 4))
#define M8XX_PCMCIA_MASK(slot)     (0xFFFF0000 >> (slot << 4))

#define M8XX_PCMCIA_POR_VALID    0x00000001
#define M8XX_PCMCIA_POR_WRPROT   0x00000002
#define M8XX_PCMCIA_POR_ATTRMEM  0x00000010
#define M8XX_PCMCIA_POR_IO       0x00000018
#define M8XX_PCMCIA_POR_16BIT    0x00000040

#define M8XX_PGCRX(slot)  m8xx_pgcrx[slot]

#define M8XX_PGCRX_CXOE    0x00000080
#define M8XX_PGCRX_CXRESET 0x00000040

/* we keep one lookup table per socket to check flags */

#define PCMCIA_EVENTS_MAX 5	/* 4 max at a time + termination */

struct event_table {
	u32 regbit;
	u32 eventbit;
};

static const char driver_name[] = "m8xx-pcmcia";

struct socket_info {
	void (*handler) (void *info, u32 events);
	void *info;

	u32 slot;
	pcmconf8xx_t *pcmcia;
	u32 bus_freq;
	int hwirq;

	socket_state_t state;
	struct pccard_mem_map mem_win[PCMCIA_MEM_WIN_NO];
	struct pccard_io_map io_win[PCMCIA_IO_WIN_NO];
	struct event_table events[PCMCIA_EVENTS_MAX];
	struct pcmcia_socket socket;
};

static struct socket_info socket[PCMCIA_SOCKETS_NO];

/*
 * Search this table to see if the windowsize is
 * supported...
 */

#define M8XX_SIZES_NO 32

static const u32 m8xx_size_to_gray[M8XX_SIZES_NO] = {
	0x00000001, 0x00000002, 0x00000008, 0x00000004,
	0x00000080, 0x00000040, 0x00000010, 0x00000020,
	0x00008000, 0x00004000, 0x00001000, 0x00002000,
	0x00000100, 0x00000200, 0x00000800, 0x00000400,

	0x0fffffff, 0xffffffff, 0xffffffff, 0xffffffff,
	0x01000000, 0x02000000, 0xffffffff, 0x04000000,
	0x00010000, 0x00020000, 0x00080000, 0x00040000,
	0x00800000, 0x00400000, 0x00100000, 0x00200000
};

/* ------------------------------------------------------------------------- */

static irqreturn_t m8xx_interrupt(int irq, void *dev);

#define PCMCIA_BMT_LIMIT (15*4)	/* Bus Monitor Timeout value */

/* ------------------------------------------------------------------------- */
/* board specific stuff:                                                     */
/* voltage_set(), hardware_enable() and hardware_disable()                   */
/* ------------------------------------------------------------------------- */
/* RPX Boards from Embedded Planet                                           */

#if defined(CONFIG_RPXCLASSIC) || defined(CONFIG_RPXLITE)

/* The RPX boards seems to have it's bus monitor timeout set to 6*8 clocks.
 * SYPCR is write once only, therefore must the slowest memory be faster
 * than the bus monitor or we will get a machine check due to the bus timeout.
 */

#define PCMCIA_BOARD_MSG "RPX CLASSIC or RPX LITE"

#undef PCMCIA_BMT_LIMIT
#define PCMCIA_BMT_LIMIT (6*8)

static int voltage_set(int slot, int vcc, int vpp)
{
	u32 reg = 0;

	switch (vcc) {
	case 0:
		break;
	case 33:
		reg |= BCSR1_PCVCTL4;
		break;
	case 50:
		reg |= BCSR1_PCVCTL5;
		break;
	default:
		return 1;
	}

	switch (vpp) {
	case 0:
		break;
	case 33:
	case 50:
		if (vcc == vpp)
			reg |= BCSR1_PCVCTL6;
		else
			return 1;
		break;
	case 120:
		reg |= BCSR1_PCVCTL7;
	default:
		return 1;
	}

	if (!((vcc == 50) || (vcc == 0)))
		return 1;

	/* first, turn off all power */

	out_be32(((u32 *) RPX_CSR_ADDR),
		 in_be32(((u32 *) RPX_CSR_ADDR)) & ~(BCSR1_PCVCTL4 |
						     BCSR1_PCVCTL5 |
						     BCSR1_PCVCTL6 |
						     BCSR1_PCVCTL7));

	/* enable new powersettings */

	out_be32(((u32 *) RPX_CSR_ADDR), in_be32(((u32 *) RPX_CSR_ADDR)) | reg);

	return 0;
}

#define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
#define hardware_enable(_slot_)	/* No hardware to enable */
#define hardware_disable(_slot_)	/* No hardware to disable */

#endif				/* CONFIG_RPXCLASSIC */

/* FADS Boards from Motorola                                               */

#if defined(CONFIG_FADS)

#define PCMCIA_BOARD_MSG "FADS"

static int voltage_set(int slot, int vcc, int vpp)
{
	u32 reg = 0;

	switch (vcc) {
	case 0:
		break;
	case 33:
		reg |= BCSR1_PCCVCC0;
		break;
	case 50:
		reg |= BCSR1_PCCVCC1;
		break;
	default:
		return 1;
	}

	switch (vpp) {
	case 0:
		break;
	case 33:
	case 50:
		if (vcc == vpp)
			reg |= BCSR1_PCCVPP1;
		else
			return 1;
		break;
	case 120:
		if ((vcc == 33) || (vcc == 50))
			reg |= BCSR1_PCCVPP0;
		else
			return 1;
	default:
		return 1;
	}

	/* first, turn off all power */
	out_be32((u32 *) BCSR1,
		 in_be32((u32 *) BCSR1) & ~(BCSR1_PCCVCC_MASK |
					    BCSR1_PCCVPP_MASK));

	/* enable new powersettings */
	out_be32((u32 *) BCSR1, in_be32((u32 *) BCSR1) | reg);

	return 0;
}

#define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V

static void hardware_enable(int slot)
{
	out_be32((u32 *) BCSR1, in_be32((u32 *) BCSR1) & ~BCSR1_PCCEN);
}

static void hardware_disable(int slot)
{
	out_be32((u32 *) BCSR1, in_be32((u32 *) BCSR1) | BCSR1_PCCEN);
}

#endif

/* MPC885ADS Boards */

#if defined(CONFIG_MPC885ADS)

#define PCMCIA_BOARD_MSG "MPC885ADS"
#define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V

static inline void hardware_enable(int slot)
{
	m8xx_pcmcia_ops.hw_ctrl(slot, 1);
}

static inline void hardware_disable(int slot)
{
	m8xx_pcmcia_ops.hw_ctrl(slot, 0);
}

static inline int voltage_set(int slot, int vcc, int vpp)
{
	return m8xx_pcmcia_ops.voltage_set(slot, vcc, vpp);
}

#endif

/* ------------------------------------------------------------------------- */
/* Motorola MBX860                                                           */

#if defined(CONFIG_MBX)

#define PCMCIA_BOARD_MSG "MBX"

static int voltage_set(int slot, int vcc, int vpp)
{
	u8 reg = 0;

	switch (vcc) {
	case 0:
		break;
	case 33:
		reg |= CSR2_VCC_33;
		break;
	case 50:
		reg |= CSR2_VCC_50;
		break;
	default:
		return 1;
	}

	switch (vpp) {
	case 0:
		break;
	case 33:
	case 50:
		if (vcc == vpp)
			reg |= CSR2_VPP_VCC;
		else
			return 1;
		break;
	case 120:
		if ((vcc == 33) || (vcc == 50))
			reg |= CSR2_VPP_12;
		else
			return 1;
	default:
		return 1;
	}

	/* first, turn off all power */
	out_8((u8 *) MBX_CSR2_ADDR,
	      in_8((u8 *) MBX_CSR2_ADDR) & ~(CSR2_VCC_MASK | CSR2_VPP_MASK));

	/* enable new powersettings */
	out_8((u8 *) MBX_CSR2_ADDR, in_8((u8 *) MBX_CSR2_ADDR) | reg);

	return 0;
}

#define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
#define hardware_enable(_slot_)	/* No hardware to enable */
#define hardware_disable(_slot_)	/* No hardware to disable */

#endif				/* CONFIG_MBX */

#if defined(CONFIG_PRxK)
#include <asm/cpld.h>
extern volatile fpga_pc_regs *fpga_pc;

#define PCMCIA_BOARD_MSG "MPC855T"

static int voltage_set(int slot, int vcc, int vpp)
{
	u8 reg = 0;
	u8 regread;
	cpld_regs *ccpld = get_cpld();

	switch (vcc) {
	case 0:
		break;
	case 33:
		reg |= PCMCIA_VCC_33;
		break;
	case 50:
		reg |= PCMCIA_VCC_50;
		break;
	default:
		return 1;
	}

	switch (vpp) {
	case 0:
		break;
	case 33:
	case 50:
		if (vcc == vpp)
			reg |= PCMCIA_VPP_VCC;
		else
			return 1;
		break;
	case 120:
		if ((vcc == 33) || (vcc == 50))
			reg |= PCMCIA_VPP_12;
		else
			return 1;
	default:
		return 1;
	}

	reg = reg >> (slot << 2);
	regread = in_8(&ccpld->fpga_pc_ctl);
	if (reg !=
	    (regread & ((PCMCIA_VCC_MASK | PCMCIA_VPP_MASK) >> (slot << 2)))) {
		/* enable new powersettings */
		regread =
		    regread & ~((PCMCIA_VCC_MASK | PCMCIA_VPP_MASK) >>
				(slot << 2));
		out_8(&ccpld->fpga_pc_ctl, reg | regread);
		msleep(100);
	}

	return 0;
}

#define socket_get(_slot_) PCMCIA_SOCKET_KEY_LV
#define hardware_enable(_slot_)	/* No hardware to enable */
#define hardware_disable(_slot_)	/* No hardware to disable */

#endif				/* CONFIG_PRxK */

static u32 pending_events[PCMCIA_SOCKETS_NO];
static DEFINE_SPINLOCK(pending_event_lock);

static irqreturn_t m8xx_interrupt(int irq, void *dev)
{
	struct socket_info *s;
	struct event_table *e;
	unsigned int i, events, pscr, pipr, per;
	pcmconf8xx_t *pcmcia = socket[0].pcmcia;

	pr_debug("m8xx_pcmcia: Interrupt!\n");
	/* get interrupt sources */

	pscr = in_be32(&pcmcia->pcmc_pscr);
	pipr = in_be32(&pcmcia->pcmc_pipr);
	per = in_be32(&pcmcia->pcmc_per);

	for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
		s = &socket[i];
		e = &s->events[0];
		events = 0;

		while (e->regbit) {
			if (pscr & e->regbit)
				events |= e->eventbit;

			e++;
		}

		/*
		 * report only if both card detect signals are the same
		 * not too nice done,
		 * we depend on that CD2 is the bit to the left of CD1...
		 */
		if (events & SS_DETECT)
			if (((pipr & M8XX_PCMCIA_CD2(i)) >> 1) ^
			    (pipr & M8XX_PCMCIA_CD1(i))) {
				events &= ~SS_DETECT;
			}
#ifdef PCMCIA_GLITCHY_CD
		/*
		 * I've experienced CD problems with my ADS board.
		 * We make an extra check to see if there was a
		 * real change of Card detection.
		 */

		if ((events & SS_DETECT) &&
		    ((pipr &
		      (M8XX_PCMCIA_CD2(i) | M8XX_PCMCIA_CD1(i))) == 0) &&
		    (s->state.Vcc | s->state.Vpp)) {
			events &= ~SS_DETECT;
			/*printk( "CD glitch workaround - CD = 0x%08x!\n",
			   (pipr & (M8XX_PCMCIA_CD2(i)
			   | M8XX_PCMCIA_CD1(i)))); */
		}
#endif

		/* call the handler */

		pr_debug("m8xx_pcmcia: slot %u: events = 0x%02x, pscr = 0x%08x, "
			"pipr = 0x%08x\n", i, events, pscr, pipr);

		if (events) {
			spin_lock(&pending_event_lock);
			pending_events[i] |= events;
			spin_unlock(&pending_event_lock);
			/*
			 * Turn off RDY_L bits in the PER mask on
			 * CD interrupt receival.
			 *
			 * They can generate bad interrupts on the
			 * ACS4,8,16,32.   - marcelo
			 */
			per &= ~M8XX_PCMCIA_RDY_L(0);
			per &= ~M8XX_PCMCIA_RDY_L(1);

			out_be32(&pcmcia->pcmc_per, per);

			if (events)
				pcmcia_parse_events(&socket[i].socket, events);
		}
	}

	/* clear the interrupt sources */
	out_be32(&pcmcia->pcmc_pscr, pscr);

	pr_debug("m8xx_pcmcia: Interrupt done.\n");

	return IRQ_HANDLED;
}

static u32 m8xx_get_graycode(u32 size)
{
	u32 k;

	for (k = 0; k < M8XX_SIZES_NO; k++)
		if (m8xx_size_to_gray[k] == size)
			break;

	if ((k == M8XX_SIZES_NO) || (m8xx_size_to_gray[k] == -1))
		k = -1;

	return k;
}

static u32 m8xx_get_speed(u32 ns, u32 is_io, u32 bus_freq)
{
	u32 reg, clocks, psst, psl, psht;

	if (!ns) {

		/*
		 * We get called with IO maps setup to 0ns
		 * if not specified by the user.
		 * They should be 255ns.
		 */

		if (is_io)
			ns = 255;
		else
			ns = 100;	/* fast memory if 0 */
	}

	/*
	 * In PSST, PSL, PSHT fields we tell the controller
	 * timing parameters in CLKOUT clock cycles.
	 * CLKOUT is the same as GCLK2_50.
	 */

/* how we want to adjust the timing - in percent */

#define ADJ 180			/* 80 % longer accesstime - to be sure */

	clocks = ((bus_freq / 1000) * ns) / 1000;
	clocks = (clocks * ADJ) / (100 * 1000);
	if (clocks >= PCMCIA_BMT_LIMIT) {
		printk("Max access time limit reached\n");
		clocks = PCMCIA_BMT_LIMIT - 1;
	}

	psst = clocks / 7;	/* setup time */
	psht = clocks / 7;	/* hold time */
	psl = (clocks * 5) / 7;	/* strobe length */

	psst += clocks - (psst + psht + psl);

	reg = psst << 12;
	reg |= psl << 7;
	reg |= psht << 16;

	return reg;
}

static int m8xx_get_status(struct pcmcia_socket *sock, unsigned int *value)
{
	int lsock = container_of(sock, struct socket_info, socket)->slot;
	struct socket_info *s = &socket[lsock];
	unsigned int pipr, reg;
	pcmconf8xx_t *pcmcia = s->pcmcia;

	pipr = in_be32(&pcmcia->pcmc_pipr);

	*value = ((pipr & (M8XX_PCMCIA_CD1(lsock)
			   | M8XX_PCMCIA_CD2(lsock))) == 0) ? SS_DETECT : 0;
	*value |= (pipr & M8XX_PCMCIA_WP(lsock)) ? SS_WRPROT : 0;

	if (s->state.flags & SS_IOCARD)
		*value |= (pipr & M8XX_PCMCIA_BVD1(lsock)) ? SS_STSCHG : 0;
	else {
		*value |= (pipr & M8XX_PCMCIA_RDY(lsock)) ? SS_READY : 0;
		*value |= (pipr & M8XX_PCMCIA_BVD1(lsock)) ? SS_BATDEAD : 0;
		*value |= (pipr & M8XX_PCMCIA_BVD2(lsock)) ? SS_BATWARN : 0;
	}

	if (s->state.Vcc | s->state.Vpp)
		*value |= SS_POWERON;

	/*
	 * Voltage detection:
	 * This driver only supports 16-Bit pc-cards.
	 * Cardbus is not handled here.
	 *
	 * To determine what voltage to use we must read the VS1 and VS2 pin.
	 * Depending on what socket type is present,
	 * different combinations mean different things.
	 *
	 * Card Key  Socket Key   VS1   VS2   Card         Vcc for CIS parse
	 *
	 * 5V        5V, LV*      NC    NC    5V only       5V (if available)
	 *
	 * 5V        5V, LV*      GND   NC    5 or 3.3V     as low as possible
	 *
	 * 5V        5V, LV*      GND   GND   5, 3.3, x.xV  as low as possible
	 *
	 * LV*       5V            -     -    shall not fit into socket
	 *
	 * LV*       LV*          GND   NC    3.3V only     3.3V
	 *
	 * LV*       LV*          NC    GND   x.xV          x.xV (if avail.)
	 *
	 * LV*       LV*          GND   GND   3.3 or x.xV   as low as possible
	 *
	 * *LV means Low Voltage
	 *
	 *
	 * That gives us the following table:
	 *
	 * Socket    VS1  VS2   Voltage
	 *
	 * 5V        NC   NC    5V
	 * 5V        NC   GND   none (should not be possible)
	 * 5V        GND  NC    >= 3.3V
	 * 5V        GND  GND   >= x.xV
	 *
	 * LV        NC   NC    5V   (if available)
	 * LV        NC   GND   x.xV (if available)
	 * LV        GND  NC    3.3V
	 * LV        GND  GND   >= x.xV
	 *
	 * So, how do I determine if I have a 5V or a LV
	 * socket on my board?  Look at the socket!
	 *
	 *
	 * Socket with 5V key:
	 * ++--------------------------------------------+
	 * ||                                            |
	 * ||                                           ||
	 * ||                                           ||
	 * |                                             |
	 * +---------------------------------------------+
	 *
	 * Socket with LV key:
	 * ++--------------------------------------------+
	 * ||                                            |
	 * |                                            ||
	 * |                                            ||
	 * |                                             |
	 * +---------------------------------------------+
	 *
	 *
	 * With other words - LV only cards does not fit
	 * into the 5V socket!
	 */

	/* read out VS1 and VS2 */

	reg = (pipr & M8XX_PCMCIA_VS_MASK(lsock))
	    >> M8XX_PCMCIA_VS_SHIFT(lsock);

	if (socket_get(lsock) == PCMCIA_SOCKET_KEY_LV) {
		switch (reg) {
		case 1:
			*value |= SS_3VCARD;
			break;	/* GND, NC - 3.3V only */
		case 2:
			*value |= SS_XVCARD;
			break;	/* NC. GND - x.xV only */
		};
	}

	pr_debug("m8xx_pcmcia: GetStatus(%d) = %#2.2x\n", lsock, *value);
	return 0;
}

static int m8xx_set_socket(struct pcmcia_socket *sock, socket_state_t * state)
{
	int lsock = container_of(sock, struct socket_info, socket)->slot;
	struct socket_info *s = &socket[lsock];
	struct event_table *e;
	unsigned int reg;
	unsigned long flags;
	pcmconf8xx_t *pcmcia = socket[0].pcmcia;

	pr_debug("m8xx_pcmcia: SetSocket(%d, flags %#3.3x, Vcc %d, Vpp %d, "
		"io_irq %d, csc_mask %#2.2x)\n", lsock, state->flags,
		state->Vcc, state->Vpp, state->io_irq, state->csc_mask);

	/* First, set voltage - bail out if invalid */
	if (voltage_set(lsock, state->Vcc, state->Vpp))
		return -EINVAL;

	/* Take care of reset... */
	if (state->flags & SS_RESET)
		out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) | M8XX_PGCRX_CXRESET);	/* active high */
	else
		out_be32(M8XX_PGCRX(lsock),
			 in_be32(M8XX_PGCRX(lsock)) & ~M8XX_PGCRX_CXRESET);

	/* ... and output enable. */

	/* The CxOE signal is connected to a 74541 on the ADS.
	   I guess most other boards used the ADS as a reference.
	   I tried to control the CxOE signal with SS_OUTPUT_ENA,
	   but the reset signal seems connected via the 541.
	   If the CxOE is left high are some signals tristated and
	   no pullups are present -> the cards act weird.
	   So right now the buffers are enabled if the power is on. */

	if (state->Vcc || state->Vpp)
		out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) & ~M8XX_PGCRX_CXOE);	/* active low */
	else
		out_be32(M8XX_PGCRX(lsock),
			 in_be32(M8XX_PGCRX(lsock)) | M8XX_PGCRX_CXOE);

	/*
	 * We'd better turn off interrupts before
	 * we mess with the events-table..
	 */

	spin_lock_irqsave(&events_lock, flags);

	/*
	 * Play around with the interrupt mask to be able to
	 * give the events the generic pcmcia driver wants us to.
	 */

	e = &s->events[0];
	reg = 0;

	if (state->csc_mask & SS_DETECT) {
		e->eventbit = SS_DETECT;
		reg |= e->regbit = (M8XX_PCMCIA_CD2(lsock)
				    | M8XX_PCMCIA_CD1(lsock));
		e++;
	}
	if (state->flags & SS_IOCARD) {
		/*
		 * I/O card
		 */
		if (state->csc_mask & SS_STSCHG) {
			e->eventbit = SS_STSCHG;
			reg |= e->regbit = M8XX_PCMCIA_BVD1(lsock);
			e++;
		}
		/*
		 * If io_irq is non-zero we should enable irq.
		 */
		if (state->io_irq) {
			out_be32(M8XX_PGCRX(lsock),
				 in_be32(M8XX_PGCRX(lsock)) |
				 mk_int_int_mask(s->hwirq) << 24);
			/*
			 * Strange thing here:
			 * The manual does not tell us which interrupt
			 * the sources generate.
			 * Anyhow, I found out that RDY_L generates IREQLVL.
			 *
			 * We use level triggerd interrupts, and they don't
			 * have to be cleared in PSCR in the interrupt handler.
			 */
			reg |= M8XX_PCMCIA_RDY_L(lsock);
		} else
			out_be32(M8XX_PGCRX(lsock),
				 in_be32(M8XX_PGCRX(lsock)) & 0x00ffffff);
	} else {
		/*
		 * Memory card
		 */
		if (state->csc_mask & SS_BATDEAD) {
			e->eventbit = SS_BATDEAD;
			reg |= e->regbit = M8XX_PCMCIA_BVD1(lsock);
			e++;
		}
		if (state->csc_mask & SS_BATWARN) {
			e->eventbit = SS_BATWARN;
			reg |= e->regbit = M8XX_PCMCIA_BVD2(lsock);
			e++;
		}
		/* What should I trigger on - low/high,raise,fall? */
		if (state->csc_mask & SS_READY) {
			e->eventbit = SS_READY;
			reg |= e->regbit = 0;	//??
			e++;
		}
	}

	e->regbit = 0;		/* terminate list */

	/*
	 * Clear the status changed .
	 * Port A and Port B share the same port.
	 * Writing ones will clear the bits.
	 */

	out_be32(&pcmcia->pcmc_pscr, reg);

	/*
	 * Write the mask.
	 * Port A and Port B share the same port.
	 * Need for read-modify-write.
	 * Ones will enable the interrupt.
	 */

	reg |=
	    in_be32(&pcmcia->
		    pcmc_per) & (M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
	out_be32(&pcmcia->pcmc_per, reg);

	spin_unlock_irqrestore(&events_lock, flags);

	/* copy the struct and modify the copy */

	s->state = *state;

	return 0;
}

static int m8xx_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
{
	int lsock = container_of(sock, struct socket_info, socket)->slot;

	struct socket_info *s = &socket[lsock];
	struct pcmcia_win *w;
	unsigned int reg, winnr;
	pcmconf8xx_t *pcmcia = s->pcmcia;

#define M8XX_SIZE (io->stop - io->start + 1)
#define M8XX_BASE (PCMCIA_IO_WIN_BASE + io->start)

	pr_debug("m8xx_pcmcia: SetIOMap(%d, %d, %#2.2x, %d ns, "
		"%#4.4llx-%#4.4llx)\n", lsock, io->map, io->flags,
		io->speed, (unsigned long long)io->start,
		(unsigned long long)io->stop);

	if ((io->map >= PCMCIA_IO_WIN_NO) || (io->start > 0xffff)
	    || (io->stop > 0xffff) || (io->stop < io->start))
		return -EINVAL;

	if ((reg = m8xx_get_graycode(M8XX_SIZE)) == -1)
		return -EINVAL;

	if (io->flags & MAP_ACTIVE) {

		pr_debug("m8xx_pcmcia: io->flags & MAP_ACTIVE\n");

		winnr = (PCMCIA_MEM_WIN_NO * PCMCIA_SOCKETS_NO)
		    + (lsock * PCMCIA_IO_WIN_NO) + io->map;

		/* setup registers */

		w = (void *)&pcmcia->pcmc_pbr0;
		w += winnr;

		out_be32(&w->or, 0);	/* turn off window first */
		out_be32(&w->br, M8XX_BASE);

		reg <<= 27;
		reg |= M8XX_PCMCIA_POR_IO | (lsock << 2);

		reg |= m8xx_get_speed(io->speed, 1, s->bus_freq);

		if (io->flags & MAP_WRPROT)
			reg |= M8XX_PCMCIA_POR_WRPROT;

		/*if(io->flags & (MAP_16BIT | MAP_AUTOSZ)) */
		if (io->flags & MAP_16BIT)
			reg |= M8XX_PCMCIA_POR_16BIT;

		if (io->flags & MAP_ACTIVE)
			reg |= M8XX_PCMCIA_POR_VALID;

		out_be32(&w->or, reg);

		pr_debug("m8xx_pcmcia: Socket %u: Mapped io window %u at "
			"%#8.8x, OR = %#8.8x.\n", lsock, io->map, w->br, w->or);
	} else {
		/* shutdown IO window */
		winnr = (PCMCIA_MEM_WIN_NO * PCMCIA_SOCKETS_NO)
		    + (lsock * PCMCIA_IO_WIN_NO) + io->map;

		/* setup registers */

		w = (void *)&pcmcia->pcmc_pbr0;
		w += winnr;

		out_be32(&w->or, 0);	/* turn off window */
		out_be32(&w->br, 0);	/* turn off base address */

		pr_debug("m8xx_pcmcia: Socket %u: Unmapped io window %u at "
			"%#8.8x, OR = %#8.8x.\n", lsock, io->map, w->br, w->or);
	}

	/* copy the struct and modify the copy */
	s->io_win[io->map] = *io;
	s->io_win[io->map].flags &= (MAP_WRPROT | MAP_16BIT | MAP_ACTIVE);
	pr_debug("m8xx_pcmcia: SetIOMap exit\n");

	return 0;
}

static int m8xx_set_mem_map(struct pcmcia_socket *sock,
			    struct pccard_mem_map *mem)
{
	int lsock = container_of(sock, struct socket_info, socket)->slot;
	struct socket_info *s = &socket[lsock];
	struct pcmcia_win *w;
	struct pccard_mem_map *old;
	unsigned int reg, winnr;
	pcmconf8xx_t *pcmcia = s->pcmcia;

	pr_debug("m8xx_pcmcia: SetMemMap(%d, %d, %#2.2x, %d ns, "
		"%#5.5llx, %#5.5x)\n", lsock, mem->map, mem->flags,
		mem->speed, (unsigned long long)mem->static_start,
		mem->card_start);

	if ((mem->map >= PCMCIA_MEM_WIN_NO)
//          || ((mem->s) >= PCMCIA_MEM_WIN_SIZE)
	    || (mem->card_start >= 0x04000000)
	    || (mem->static_start & 0xfff)	/* 4KByte resolution */
	    ||(mem->card_start & 0xfff))
		return -EINVAL;

	if ((reg = m8xx_get_graycode(PCMCIA_MEM_WIN_SIZE)) == -1) {
		printk("Cannot set size to 0x%08x.\n", PCMCIA_MEM_WIN_SIZE);
		return -EINVAL;
	}
	reg <<= 27;

	winnr = (lsock * PCMCIA_MEM_WIN_NO) + mem->map;

	/* Setup the window in the pcmcia controller */

	w = (void *)&pcmcia->pcmc_pbr0;
	w += winnr;

	reg |= lsock << 2;

	reg |= m8xx_get_speed(mem->speed, 0, s->bus_freq);

	if (mem->flags & MAP_ATTRIB)
		reg |= M8XX_PCMCIA_POR_ATTRMEM;

	if (mem->flags & MAP_WRPROT)
		reg |= M8XX_PCMCIA_POR_WRPROT;

	if (mem->flags & MAP_16BIT)
		reg |= M8XX_PCMCIA_POR_16BIT;

	if (mem->flags & MAP_ACTIVE)
		reg |= M8XX_PCMCIA_POR_VALID;

	out_be32(&w->or, reg);

	pr_debug("m8xx_pcmcia: Socket %u: Mapped memory window %u at %#8.8x, "
		"OR = %#8.8x.\n", lsock, mem->map, w->br, w->or);

	if (mem->flags & MAP_ACTIVE) {
		/* get the new base address */
		mem->static_start = PCMCIA_MEM_WIN_BASE +
		    (PCMCIA_MEM_WIN_SIZE * winnr)
		    + mem->card_start;
	}

	pr_debug("m8xx_pcmcia: SetMemMap(%d, %d, %#2.2x, %d ns, "
		"%#5.5llx, %#5.5x)\n", lsock, mem->map, mem->flags,
		mem->speed, (unsigned long long)mem->static_start,
		mem->card_start);

	/* copy the struct and modify the copy */

	old = &s->mem_win[mem->map];

	*old = *mem;
	old->flags &= (MAP_ATTRIB | MAP_WRPROT | MAP_16BIT | MAP_ACTIVE);

	return 0;
}

static int m8xx_sock_init(struct pcmcia_socket *sock)
{
	int i;
	pccard_io_map io = { 0, 0, 0, 0, 1 };
	pccard_mem_map mem = { 0, 0, 0, 0, 0, 0 };

	pr_debug("m8xx_pcmcia: sock_init(%d)\n", s);

	m8xx_set_socket(sock, &dead_socket);
	for (i = 0; i < PCMCIA_IO_WIN_NO; i++) {
		io.map = i;
		m8xx_set_io_map(sock, &io);
	}
	for (i = 0; i < PCMCIA_MEM_WIN_NO; i++) {
		mem.map = i;
		m8xx_set_mem_map(sock, &mem);
	}

	return 0;

}

static int m8xx_sock_suspend(struct pcmcia_socket *sock)
{
	return m8xx_set_socket(sock, &dead_socket);
}

static struct pccard_operations m8xx_services = {
	.init = m8xx_sock_init,
	.suspend = m8xx_sock_suspend,
	.get_status = m8xx_get_status,
	.set_socket = m8xx_set_socket,
	.set_io_map = m8xx_set_io_map,
	.set_mem_map = m8xx_set_mem_map,
};

static int __init m8xx_probe(struct of_device *ofdev,
			     const struct of_device_id *match)
{
	struct pcmcia_win *w;
	unsigned int i, m, hwirq;
	pcmconf8xx_t *pcmcia;
	int status;
	struct device_node *np = ofdev->dev.of_node;

	pcmcia_info("%s\n", version);

	pcmcia = of_iomap(np, 0);
	if (pcmcia == NULL)
		return -EINVAL;

	pcmcia_schlvl = irq_of_parse_and_map(np, 0);
	hwirq = irq_map[pcmcia_schlvl].hwirq;
	if (pcmcia_schlvl < 0) {
		iounmap(pcmcia);
		return -EINVAL;
	}

	m8xx_pgcrx[0] = &pcmcia->pcmc_pgcra;
	m8xx_pgcrx[1] = &pcmcia->pcmc_pgcrb;

	pcmcia_info(PCMCIA_BOARD_MSG " using " PCMCIA_SLOT_MSG
		    " with IRQ %u  (%d). \n", pcmcia_schlvl, hwirq);

	/* Configure Status change interrupt */

	if (request_irq(pcmcia_schlvl, m8xx_interrupt, IRQF_SHARED,
			driver_name, socket)) {
		pcmcia_error("Cannot allocate IRQ %u for SCHLVL!\n",
			     pcmcia_schlvl);
		iounmap(pcmcia);
		return -1;
	}

	w = (void *)&pcmcia->pcmc_pbr0;

	out_be32(&pcmcia->pcmc_pscr, M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
	clrbits32(&pcmcia->pcmc_per, M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));

	/* connect interrupt and disable CxOE */

	out_be32(M8XX_PGCRX(0),
		 M8XX_PGCRX_CXOE | (mk_int_int_mask(hwirq) << 16));
	out_be32(M8XX_PGCRX(1),
		 M8XX_PGCRX_CXOE | (mk_int_int_mask(hwirq) << 16));

	/* intialize the fixed memory windows */

	for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
		for (m = 0; m < PCMCIA_MEM_WIN_NO; m++) {
			out_be32(&w->br, PCMCIA_MEM_WIN_BASE +
				 (PCMCIA_MEM_WIN_SIZE
				  * (m + i * PCMCIA_MEM_WIN_NO)));

			out_be32(&w->or, 0);	/* set to not valid */

			w++;
		}
	}

	/* turn off voltage */
	voltage_set(0, 0, 0);
	voltage_set(1, 0, 0);

	/* Enable external hardware */
	hardware_enable(0);
	hardware_enable(1);

	for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
		socket[i].slot = i;
		socket[i].socket.owner = THIS_MODULE;
		socket[i].socket.features =
		    SS_CAP_PCCARD | SS_CAP_MEM_ALIGN | SS_CAP_STATIC_MAP;
		socket[i].socket.irq_mask = 0x000;
		socket[i].socket.map_size = 0x1000;
		socket[i].socket.io_offset = 0;
		socket[i].socket.pci_irq = pcmcia_schlvl;
		socket[i].socket.ops = &m8xx_services;
		socket[i].socket.resource_ops = &pccard_iodyn_ops;
		socket[i].socket.cb_dev = NULL;
		socket[i].socket.dev.parent = &ofdev->dev;
		socket[i].pcmcia = pcmcia;
		socket[i].bus_freq = ppc_proc_freq;
		socket[i].hwirq = hwirq;

	}

	for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
		status = pcmcia_register_socket(&socket[i].socket);
		if (status < 0)
			pcmcia_error("Socket register failed\n");
	}

	return 0;
}

static int m8xx_remove(struct of_device *ofdev)
{
	u32 m, i;
	struct pcmcia_win *w;
	pcmconf8xx_t *pcmcia = socket[0].pcmcia;

	for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
		w = (void *)&pcmcia->pcmc_pbr0;

		out_be32(&pcmcia->pcmc_pscr, M8XX_PCMCIA_MASK(i));
		out_be32(&pcmcia->pcmc_per,
			 in_be32(&pcmcia->pcmc_per) & ~M8XX_PCMCIA_MASK(i));

		/* turn off interrupt and disable CxOE */
		out_be32(M8XX_PGCRX(i), M8XX_PGCRX_CXOE);

		/* turn off memory windows */
		for (m = 0; m < PCMCIA_MEM_WIN_NO; m++) {
			out_be32(&w->or, 0);	/* set to not valid */
			w++;
		}

		/* turn off voltage */
		voltage_set(i, 0, 0);

		/* disable external hardware */
		hardware_disable(i);
	}
	for (i = 0; i < PCMCIA_SOCKETS_NO; i++)
		pcmcia_unregister_socket(&socket[i].socket);
	iounmap(pcmcia);

	free_irq(pcmcia_schlvl, NULL);

	return 0;
}

static const struct of_device_id m8xx_pcmcia_match[] = {
	{
	 .type = "pcmcia",
	 .compatible = "fsl,pq-pcmcia",
	 },
	{},
};

MODULE_DEVICE_TABLE(of, m8xx_pcmcia_match);

static struct of_platform_driver m8xx_pcmcia_driver = {
	.driver = {
		.name = driver_name,
		.owner = THIS_MODULE,
		.of_match_table = m8xx_pcmcia_match,
	},
	.probe = m8xx_probe,
	.remove = m8xx_remove,
};

static int __init m8xx_init(void)
{
	return of_register_platform_driver(&m8xx_pcmcia_driver);
}

static void __exit m8xx_exit(void)
{
	of_unregister_platform_driver(&m8xx_pcmcia_driver);
}

module_init(m8xx_init);
module_exit(m8xx_exit);