summaryrefslogtreecommitdiffstats
path: root/arch/blackfin/kernel/bfin_gpio.c
blob: 02796b88443de4ebd2aef9e089f0893723607695 (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
/*
 * GPIO Abstraction Layer
 *
 * Copyright 2006-2010 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later
 */

#include <linux/delay.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <asm/blackfin.h>
#include <asm/gpio.h>
#include <asm/portmux.h>
#include <linux/irq.h>
#include <asm/irq_handler.h>

#if ANOMALY_05000311 || ANOMALY_05000323
enum {
	AWA_data = SYSCR,
	AWA_data_clear = SYSCR,
	AWA_data_set = SYSCR,
	AWA_toggle = SYSCR,
	AWA_maska = BFIN_UART_SCR,
	AWA_maska_clear = BFIN_UART_SCR,
	AWA_maska_set = BFIN_UART_SCR,
	AWA_maska_toggle = BFIN_UART_SCR,
	AWA_maskb = BFIN_UART_GCTL,
	AWA_maskb_clear = BFIN_UART_GCTL,
	AWA_maskb_set = BFIN_UART_GCTL,
	AWA_maskb_toggle = BFIN_UART_GCTL,
	AWA_dir = SPORT1_STAT,
	AWA_polar = SPORT1_STAT,
	AWA_edge = SPORT1_STAT,
	AWA_both = SPORT1_STAT,
#if ANOMALY_05000311
	AWA_inen = TIMER_ENABLE,
#elif ANOMALY_05000323
	AWA_inen = DMA1_1_CONFIG,
#endif
};
	/* Anomaly Workaround */
#define AWA_DUMMY_READ(name) bfin_read16(AWA_ ## name)
#else
#define AWA_DUMMY_READ(...)  do { } while (0)
#endif

static struct gpio_port_t * const gpio_array[] = {
#if defined(BF533_FAMILY) || defined(BF538_FAMILY)
	(struct gpio_port_t *) FIO_FLAG_D,
#elif defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
	(struct gpio_port_t *) PORTFIO,
	(struct gpio_port_t *) PORTGIO,
	(struct gpio_port_t *) PORTHIO,
#elif defined(BF561_FAMILY)
	(struct gpio_port_t *) FIO0_FLAG_D,
	(struct gpio_port_t *) FIO1_FLAG_D,
	(struct gpio_port_t *) FIO2_FLAG_D,
#elif defined(CONFIG_BF54x)
	(struct gpio_port_t *)PORTA_FER,
	(struct gpio_port_t *)PORTB_FER,
	(struct gpio_port_t *)PORTC_FER,
	(struct gpio_port_t *)PORTD_FER,
	(struct gpio_port_t *)PORTE_FER,
	(struct gpio_port_t *)PORTF_FER,
	(struct gpio_port_t *)PORTG_FER,
	(struct gpio_port_t *)PORTH_FER,
	(struct gpio_port_t *)PORTI_FER,
	(struct gpio_port_t *)PORTJ_FER,
#else
# error no gpio arrays defined
#endif
};

#if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
static unsigned short * const port_fer[] = {
	(unsigned short *) PORTF_FER,
	(unsigned short *) PORTG_FER,
	(unsigned short *) PORTH_FER,
};

# if !defined(BF537_FAMILY)
static unsigned short * const port_mux[] = {
	(unsigned short *) PORTF_MUX,
	(unsigned short *) PORTG_MUX,
	(unsigned short *) PORTH_MUX,
};

static const
u8 pmux_offset[][16] = {
#  if defined(CONFIG_BF52x)
	{ 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 4, 6, 8, 8, 10, 10 }, /* PORTF */
	{ 0, 0, 0, 0, 0, 2, 2, 4, 4, 6, 8, 10, 10, 10, 12, 12 }, /* PORTG */
	{ 0, 0, 0, 0, 0, 0, 0, 0, 2, 4, 4, 4, 4, 4, 4, 4 }, /* PORTH */
#  elif defined(CONFIG_BF51x)
	{ 0, 2, 2, 2, 2, 2, 2, 4, 6, 6, 6, 8, 8, 8, 8, 10 }, /* PORTF */
	{ 0, 0, 0, 2, 4, 6, 6, 6, 8, 10, 10, 12, 14, 14, 14, 14 }, /* PORTG */
	{ 0, 0, 0, 0, 2, 2, 4, 6, 10, 10, 10, 10, 10, 10, 10, 10 }, /* PORTH */
#  endif
};
# endif

#elif defined(BF538_FAMILY)
static unsigned short * const port_fer[] = {
	(unsigned short *) PORTCIO_FER,
	(unsigned short *) PORTDIO_FER,
	(unsigned short *) PORTEIO_FER,
};
#endif

#define RESOURCE_LABEL_SIZE	16

static struct str_ident {
	char name[RESOURCE_LABEL_SIZE];
} str_ident[MAX_RESOURCES];

#if defined(CONFIG_PM)
static struct gpio_port_s gpio_bank_saved[GPIO_BANK_NUM];
# ifdef BF538_FAMILY
static unsigned short port_fer_saved[3];
# endif
#endif

static void gpio_error(unsigned gpio)
{
	printk(KERN_ERR "bfin-gpio: GPIO %d wasn't requested!\n", gpio);
}

static void set_label(unsigned short ident, const char *label)
{
	if (label) {
		strncpy(str_ident[ident].name, label,
			 RESOURCE_LABEL_SIZE);
		str_ident[ident].name[RESOURCE_LABEL_SIZE - 1] = 0;
	}
}

static char *get_label(unsigned short ident)
{
	return (*str_ident[ident].name ? str_ident[ident].name : "UNKNOWN");
}

static int cmp_label(unsigned short ident, const char *label)
{
	if (label == NULL) {
		dump_stack();
		printk(KERN_ERR "Please provide none-null label\n");
	}

	if (label)
		return strcmp(str_ident[ident].name, label);
	else
		return -EINVAL;
}

#define map_entry(m, i)      reserved_##m##_map[gpio_bank(i)]
#define is_reserved(m, i, e) (map_entry(m, i) & gpio_bit(i))
#define reserve(m, i)        (map_entry(m, i) |= gpio_bit(i))
#define unreserve(m, i)      (map_entry(m, i) &= ~gpio_bit(i))
#define DECLARE_RESERVED_MAP(m, c) static unsigned short reserved_##m##_map[c]

DECLARE_RESERVED_MAP(gpio, GPIO_BANK_NUM);
DECLARE_RESERVED_MAP(peri, DIV_ROUND_UP(MAX_RESOURCES, GPIO_BANKSIZE));
DECLARE_RESERVED_MAP(gpio_irq, GPIO_BANK_NUM);

inline int check_gpio(unsigned gpio)
{
#if defined(CONFIG_BF54x)
	if (gpio == GPIO_PB15 || gpio == GPIO_PC14 || gpio == GPIO_PC15
	    || gpio == GPIO_PH14 || gpio == GPIO_PH15
	    || gpio == GPIO_PJ14 || gpio == GPIO_PJ15)
		return -EINVAL;
#endif
	if (gpio >= MAX_BLACKFIN_GPIOS)
		return -EINVAL;
	return 0;
}

static void port_setup(unsigned gpio, unsigned short usage)
{
#if defined(BF538_FAMILY)
	/*
	 * BF538/9 Port C,D and E are special.
	 * Inverted PORT_FER polarity on CDE and no PORF_FER on F
	 * Regular PORT F GPIOs are handled here, CDE are exclusively
	 * managed by GPIOLIB
	 */

	if (gpio < MAX_BLACKFIN_GPIOS || gpio >= MAX_RESOURCES)
		return;

	gpio -= MAX_BLACKFIN_GPIOS;

	if (usage == GPIO_USAGE)
		*port_fer[gpio_bank(gpio)] |= gpio_bit(gpio);
	else
		*port_fer[gpio_bank(gpio)] &= ~gpio_bit(gpio);
	SSYNC();
	return;
#endif

	if (check_gpio(gpio))
		return;

#if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
	if (usage == GPIO_USAGE)
		*port_fer[gpio_bank(gpio)] &= ~gpio_bit(gpio);
	else
		*port_fer[gpio_bank(gpio)] |= gpio_bit(gpio);
	SSYNC();
#elif defined(CONFIG_BF54x)
	if (usage == GPIO_USAGE)
		gpio_array[gpio_bank(gpio)]->port_fer &= ~gpio_bit(gpio);
	else
		gpio_array[gpio_bank(gpio)]->port_fer |= gpio_bit(gpio);
	SSYNC();
#endif
}

#ifdef BF537_FAMILY
static const s8 port_mux[] = {
	[GPIO_PF0] = 3,
	[GPIO_PF1] = 3,
	[GPIO_PF2] = 4,
	[GPIO_PF3] = 4,
	[GPIO_PF4] = 5,
	[GPIO_PF5] = 6,
	[GPIO_PF6] = 7,
	[GPIO_PF7] = 8,
	[GPIO_PF8 ... GPIO_PF15] = -1,
	[GPIO_PG0 ... GPIO_PG7] = -1,
	[GPIO_PG8] = 9,
	[GPIO_PG9] = 9,
	[GPIO_PG10] = 10,
	[GPIO_PG11] = 10,
	[GPIO_PG12] = 10,
	[GPIO_PG13] = 11,
	[GPIO_PG14] = 11,
	[GPIO_PG15] = 11,
	[GPIO_PH0 ... GPIO_PH15] = -1,
	[PORT_PJ0 ... PORT_PJ3] = -1,
	[PORT_PJ4] = 1,
	[PORT_PJ5] = 1,
	[PORT_PJ6 ... PORT_PJ9] = -1,
	[PORT_PJ10] = 0,
	[PORT_PJ11] = 0,
};

static int portmux_group_check(unsigned short per)
{
	u16 ident = P_IDENT(per);
	u16 function = P_FUNCT2MUX(per);
	s8 offset = port_mux[ident];
	u16 m, pmux, pfunc;

	if (offset < 0)
		return 0;

	pmux = bfin_read_PORT_MUX();
	for (m = 0; m < ARRAY_SIZE(port_mux); ++m) {
		if (m == ident)
			continue;
		if (port_mux[m] != offset)
			continue;
		if (!is_reserved(peri, m, 1))
			continue;

		if (offset == 1)
			pfunc = (pmux >> offset) & 3;
		else
			pfunc = (pmux >> offset) & 1;
		if (pfunc != function) {
			pr_err("pin group conflict! request pin %d func %d conflict with pin %d func %d\n",
				ident, function, m, pfunc);
			return -EINVAL;
		}
	}

	return 0;
}

static void portmux_setup(unsigned short per)
{
	u16 ident = P_IDENT(per);
	u16 function = P_FUNCT2MUX(per);
	s8 offset = port_mux[ident];
	u16 pmux;

	if (offset == -1)
		return;

	pmux = bfin_read_PORT_MUX();
	if (offset != 1)
		pmux &= ~(1 << offset);
	else
		pmux &= ~(3 << 1);
	pmux |= (function << offset);
	bfin_write_PORT_MUX(pmux);
}
#elif defined(CONFIG_BF54x)
inline void portmux_setup(unsigned short per)
{
	u16 ident = P_IDENT(per);
	u16 function = P_FUNCT2MUX(per);
	u32 pmux;

	pmux = gpio_array[gpio_bank(ident)]->port_mux;

	pmux &= ~(0x3 << (2 * gpio_sub_n(ident)));
	pmux |= (function & 0x3) << (2 * gpio_sub_n(ident));

	gpio_array[gpio_bank(ident)]->port_mux = pmux;
}

inline u16 get_portmux(unsigned short per)
{
	u16 ident = P_IDENT(per);
	u32 pmux = gpio_array[gpio_bank(ident)]->port_mux;
	return (pmux >> (2 * gpio_sub_n(ident)) & 0x3);
}
static int portmux_group_check(unsigned short per)
{
	return 0;
}
#elif defined(CONFIG_BF52x) || defined(CONFIG_BF51x)
static int portmux_group_check(unsigned short per)
{
	u16 ident = P_IDENT(per);
	u16 function = P_FUNCT2MUX(per);
	u8 offset = pmux_offset[gpio_bank(ident)][gpio_sub_n(ident)];
	u16 pin, gpiopin, pfunc;

	for (pin = 0; pin < GPIO_BANKSIZE; ++pin) {
		if (offset != pmux_offset[gpio_bank(ident)][pin])
			continue;

		gpiopin = gpio_bank(ident) * GPIO_BANKSIZE + pin;
		if (gpiopin == ident)
			continue;
		if (!is_reserved(peri, gpiopin, 1))
			continue;

		pfunc = *port_mux[gpio_bank(ident)];
		pfunc = (pfunc >> offset) & 3;
		if (pfunc != function) {
			pr_err("pin group conflict! request pin %d func %d conflict with pin %d func %d\n",
				ident, function, gpiopin, pfunc);
			return -EINVAL;
		}
	}

	return 0;
}

inline void portmux_setup(unsigned short per)
{
	u16 ident = P_IDENT(per);
	u16 function = P_FUNCT2MUX(per);
	u8 offset = pmux_offset[gpio_bank(ident)][gpio_sub_n(ident)];
	u16 pmux;

	pmux = *port_mux[gpio_bank(ident)];
	if  (((pmux >> offset) & 3) == function)
		return;
	pmux &= ~(3 << offset);
	pmux |= (function & 3) << offset;
	*port_mux[gpio_bank(ident)] = pmux;
	SSYNC();
}
#else
# define portmux_setup(...)  do { } while (0)
static int portmux_group_check(unsigned short per)
{
	return 0;
}
#endif

#ifndef CONFIG_BF54x
/***********************************************************
*
* FUNCTIONS: Blackfin General Purpose Ports Access Functions
*
* INPUTS/OUTPUTS:
* gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
*
*
* DESCRIPTION: These functions abstract direct register access
*              to Blackfin processor General Purpose
*              Ports Regsiters
*
* CAUTION: These functions do not belong to the GPIO Driver API
*************************************************************
* MODIFICATION HISTORY :
**************************************************************/

/* Set a specific bit */

#define SET_GPIO(name) \
void set_gpio_ ## name(unsigned gpio, unsigned short arg) \
{ \
	unsigned long flags; \
	flags = hard_local_irq_save(); \
	if (arg) \
		gpio_array[gpio_bank(gpio)]->name |= gpio_bit(gpio); \
	else \
		gpio_array[gpio_bank(gpio)]->name &= ~gpio_bit(gpio); \
	AWA_DUMMY_READ(name); \
	hard_local_irq_restore(flags); \
} \
EXPORT_SYMBOL(set_gpio_ ## name);

SET_GPIO(dir)   /* set_gpio_dir() */
SET_GPIO(inen)  /* set_gpio_inen() */
SET_GPIO(polar) /* set_gpio_polar() */
SET_GPIO(edge)  /* set_gpio_edge() */
SET_GPIO(both)  /* set_gpio_both() */


#define SET_GPIO_SC(name) \
void set_gpio_ ## name(unsigned gpio, unsigned short arg) \
{ \
	unsigned long flags; \
	if (ANOMALY_05000311 || ANOMALY_05000323) \
		flags = hard_local_irq_save(); \
	if (arg) \
		gpio_array[gpio_bank(gpio)]->name ## _set = gpio_bit(gpio); \
	else \
		gpio_array[gpio_bank(gpio)]->name ## _clear = gpio_bit(gpio); \
	if (ANOMALY_05000311 || ANOMALY_05000323) { \
		AWA_DUMMY_READ(name); \
		hard_local_irq_restore(flags); \
	} \
} \
EXPORT_SYMBOL(set_gpio_ ## name);

SET_GPIO_SC(maska)
SET_GPIO_SC(maskb)
SET_GPIO_SC(data)

void set_gpio_toggle(unsigned gpio)
{
	unsigned long flags;
	if (ANOMALY_05000311 || ANOMALY_05000323)
		flags = hard_local_irq_save();
	gpio_array[gpio_bank(gpio)]->toggle = gpio_bit(gpio);
	if (ANOMALY_05000311 || ANOMALY_05000323) {
		AWA_DUMMY_READ(toggle);
		hard_local_irq_restore(flags);
	}
}
EXPORT_SYMBOL(set_gpio_toggle);


/*Set current PORT date (16-bit word)*/

#define SET_GPIO_P(name) \
void set_gpiop_ ## name(unsigned gpio, unsigned short arg) \
{ \
	unsigned long flags; \
	if (ANOMALY_05000311 || ANOMALY_05000323) \
		flags = hard_local_irq_save(); \
	gpio_array[gpio_bank(gpio)]->name = arg; \
	if (ANOMALY_05000311 || ANOMALY_05000323) { \
		AWA_DUMMY_READ(name); \
		hard_local_irq_restore(flags); \
	} \
} \
EXPORT_SYMBOL(set_gpiop_ ## name);

SET_GPIO_P(data)
SET_GPIO_P(dir)
SET_GPIO_P(inen)
SET_GPIO_P(polar)
SET_GPIO_P(edge)
SET_GPIO_P(both)
SET_GPIO_P(maska)
SET_GPIO_P(maskb)

/* Get a specific bit */
#define GET_GPIO(name) \
unsigned short get_gpio_ ## name(unsigned gpio) \
{ \
	unsigned long flags; \
	unsigned short ret; \
	if (ANOMALY_05000311 || ANOMALY_05000323) \
		flags = hard_local_irq_save(); \
	ret = 0x01 & (gpio_array[gpio_bank(gpio)]->name >> gpio_sub_n(gpio)); \
	if (ANOMALY_05000311 || ANOMALY_05000323) { \
		AWA_DUMMY_READ(name); \
		hard_local_irq_restore(flags); \
	} \
	return ret; \
} \
EXPORT_SYMBOL(get_gpio_ ## name);

GET_GPIO(data)
GET_GPIO(dir)
GET_GPIO(inen)
GET_GPIO(polar)
GET_GPIO(edge)
GET_GPIO(both)
GET_GPIO(maska)
GET_GPIO(maskb)

/*Get current PORT date (16-bit word)*/

#define GET_GPIO_P(name) \
unsigned short get_gpiop_ ## name(unsigned gpio) \
{ \
	unsigned long flags; \
	unsigned short ret; \
	if (ANOMALY_05000311 || ANOMALY_05000323) \
		flags = hard_local_irq_save(); \
	ret = (gpio_array[gpio_bank(gpio)]->name); \
	if (ANOMALY_05000311 || ANOMALY_05000323) { \
		AWA_DUMMY_READ(name); \
		hard_local_irq_restore(flags); \
	} \
	return ret; \
} \
EXPORT_SYMBOL(get_gpiop_ ## name);

GET_GPIO_P(data)
GET_GPIO_P(dir)
GET_GPIO_P(inen)
GET_GPIO_P(polar)
GET_GPIO_P(edge)
GET_GPIO_P(both)
GET_GPIO_P(maska)
GET_GPIO_P(maskb)


#ifdef CONFIG_PM
DECLARE_RESERVED_MAP(wakeup, GPIO_BANK_NUM);

static const unsigned int sic_iwr_irqs[] = {
#if defined(BF533_FAMILY)
	IRQ_PROG_INTB
#elif defined(BF537_FAMILY)
	IRQ_PF_INTB_WATCH, IRQ_PORTG_INTB, IRQ_PH_INTB_MAC_TX
#elif defined(BF538_FAMILY)
	IRQ_PORTF_INTB
#elif defined(CONFIG_BF52x) || defined(CONFIG_BF51x)
	IRQ_PORTF_INTB, IRQ_PORTG_INTB, IRQ_PORTH_INTB
#elif defined(BF561_FAMILY)
	IRQ_PROG0_INTB, IRQ_PROG1_INTB, IRQ_PROG2_INTB
#else
# error no SIC_IWR defined
#endif
};

/***********************************************************
*
* FUNCTIONS: Blackfin PM Setup API
*
* INPUTS/OUTPUTS:
* gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
* type -
*	PM_WAKE_RISING
*	PM_WAKE_FALLING
*	PM_WAKE_HIGH
*	PM_WAKE_LOW
*	PM_WAKE_BOTH_EDGES
*
* DESCRIPTION: Blackfin PM Driver API
*
* CAUTION:
*************************************************************
* MODIFICATION HISTORY :
**************************************************************/
int gpio_pm_wakeup_ctrl(unsigned gpio, unsigned ctrl)
{
	unsigned long flags;

	if (check_gpio(gpio) < 0)
		return -EINVAL;

	flags = hard_local_irq_save();
	if (ctrl)
		reserve(wakeup, gpio);
	else
		unreserve(wakeup, gpio);

	set_gpio_maskb(gpio, ctrl);
	hard_local_irq_restore(flags);

	return 0;
}

int bfin_pm_standby_ctrl(unsigned ctrl)
{
	u16 bank, mask, i;

	for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
		mask = map_entry(wakeup, i);
		bank = gpio_bank(i);

		if (mask)
			bfin_internal_set_wake(sic_iwr_irqs[bank], ctrl);
	}
	return 0;
}

void bfin_gpio_pm_hibernate_suspend(void)
{
	int i, bank;

#ifdef BF538_FAMILY
	for (i = 0; i < ARRAY_SIZE(port_fer_saved); ++i)
		port_fer_saved[i] = *port_fer[i];
#endif

	for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
		bank = gpio_bank(i);

#if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
		gpio_bank_saved[bank].fer = *port_fer[bank];
#if defined(CONFIG_BF52x) || defined(CONFIG_BF51x)
		gpio_bank_saved[bank].mux = *port_mux[bank];
#else
		if (bank == 0)
			gpio_bank_saved[bank].mux = bfin_read_PORT_MUX();
#endif
#endif
		gpio_bank_saved[bank].data  = gpio_array[bank]->data;
		gpio_bank_saved[bank].inen  = gpio_array[bank]->inen;
		gpio_bank_saved[bank].polar = gpio_array[bank]->polar;
		gpio_bank_saved[bank].dir   = gpio_array[bank]->dir;
		gpio_bank_saved[bank].edge  = gpio_array[bank]->edge;
		gpio_bank_saved[bank].both  = gpio_array[bank]->both;
		gpio_bank_saved[bank].maska = gpio_array[bank]->maska;
	}

#ifdef BFIN_SPECIAL_GPIO_BANKS
	bfin_special_gpio_pm_hibernate_suspend();
#endif

	AWA_DUMMY_READ(maska);
}

void bfin_gpio_pm_hibernate_restore(void)
{
	int i, bank;

#ifdef BF538_FAMILY
	for (i = 0; i < ARRAY_SIZE(port_fer_saved); ++i)
		*port_fer[i] = port_fer_saved[i];
#endif

	for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
		bank = gpio_bank(i);

#if defined(CONFIG_BF52x) || defined(BF537_FAMILY) || defined(CONFIG_BF51x)
#if defined(CONFIG_BF52x) || defined(CONFIG_BF51x)
		*port_mux[bank] = gpio_bank_saved[bank].mux;
#else
		if (bank == 0)
			bfin_write_PORT_MUX(gpio_bank_saved[bank].mux);
#endif
		*port_fer[bank] = gpio_bank_saved[bank].fer;
#endif
		gpio_array[bank]->inen  = gpio_bank_saved[bank].inen;
		gpio_array[bank]->data_set = gpio_bank_saved[bank].data
						& gpio_bank_saved[bank].dir;
		gpio_array[bank]->dir   = gpio_bank_saved[bank].dir;
		gpio_array[bank]->polar = gpio_bank_saved[bank].polar;
		gpio_array[bank]->edge  = gpio_bank_saved[bank].edge;
		gpio_array[bank]->both  = gpio_bank_saved[bank].both;
		gpio_array[bank]->maska = gpio_bank_saved[bank].maska;
	}

#ifdef BFIN_SPECIAL_GPIO_BANKS
	bfin_special_gpio_pm_hibernate_restore();
#endif

	AWA_DUMMY_READ(maska);
}


#endif
#else /* CONFIG_BF54x */
#ifdef CONFIG_PM

int bfin_pm_standby_ctrl(unsigned ctrl)
{
	return 0;
}

void bfin_gpio_pm_hibernate_suspend(void)
{
	int i, bank;

	for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
		bank = gpio_bank(i);

		gpio_bank_saved[bank].fer = gpio_array[bank]->port_fer;
		gpio_bank_saved[bank].mux = gpio_array[bank]->port_mux;
		gpio_bank_saved[bank].data = gpio_array[bank]->data;
		gpio_bank_saved[bank].inen = gpio_array[bank]->inen;
		gpio_bank_saved[bank].dir = gpio_array[bank]->dir_set;
	}
}

void bfin_gpio_pm_hibernate_restore(void)
{
	int i, bank;

	for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
		bank = gpio_bank(i);

		gpio_array[bank]->port_mux = gpio_bank_saved[bank].mux;
		gpio_array[bank]->port_fer = gpio_bank_saved[bank].fer;
		gpio_array[bank]->inen = gpio_bank_saved[bank].inen;
		gpio_array[bank]->data_set = gpio_bank_saved[bank].data
						& gpio_bank_saved[bank].dir;
		gpio_array[bank]->dir_set = gpio_bank_saved[bank].dir;
	}
}
#endif

unsigned short get_gpio_dir(unsigned gpio)
{
	return (0x01 & (gpio_array[gpio_bank(gpio)]->dir_clear >> gpio_sub_n(gpio)));
}
EXPORT_SYMBOL(get_gpio_dir);

#endif /* CONFIG_BF54x */

/***********************************************************
*
* FUNCTIONS:	Blackfin Peripheral Resource Allocation
*		and PortMux Setup
*
* INPUTS/OUTPUTS:
* per	Peripheral Identifier
* label	String
*
* DESCRIPTION: Blackfin Peripheral Resource Allocation and Setup API
*
* CAUTION:
*************************************************************
* MODIFICATION HISTORY :
**************************************************************/

int peripheral_request(unsigned short per, const char *label)
{
	unsigned long flags;
	unsigned short ident = P_IDENT(per);

	/*
	 * Don't cares are pins with only one dedicated function
	 */

	if (per & P_DONTCARE)
		return 0;

	if (!(per & P_DEFINED))
		return -ENODEV;

	BUG_ON(ident >= MAX_RESOURCES);

	flags = hard_local_irq_save();

	/* If a pin can be muxed as either GPIO or peripheral, make
	 * sure it is not already a GPIO pin when we request it.
	 */
	if (unlikely(!check_gpio(ident) && is_reserved(gpio, ident, 1))) {
		if (system_state == SYSTEM_BOOTING)
			dump_stack();
		printk(KERN_ERR
		       "%s: Peripheral %d is already reserved as GPIO by %s !\n",
		       __func__, ident, get_label(ident));
		hard_local_irq_restore(flags);
		return -EBUSY;
	}

	if (unlikely(is_reserved(peri, ident, 1))) {

		/*
		 * Pin functions like AMC address strobes my
		 * be requested and used by several drivers
		 */

#ifdef CONFIG_BF54x
		if (!((per & P_MAYSHARE) && get_portmux(per) == P_FUNCT2MUX(per))) {
#else
		if (!(per & P_MAYSHARE)) {
#endif
			/*
			 * Allow that the identical pin function can
			 * be requested from the same driver twice
			 */

			if (cmp_label(ident, label) == 0)
				goto anyway;

			if (system_state == SYSTEM_BOOTING)
				dump_stack();
			printk(KERN_ERR
			       "%s: Peripheral %d function %d is already reserved by %s !\n",
			       __func__, ident, P_FUNCT2MUX(per), get_label(ident));
			hard_local_irq_restore(flags);
			return -EBUSY;
		}
	}

	if (unlikely(portmux_group_check(per))) {
		hard_local_irq_restore(flags);
		return -EBUSY;
	}
 anyway:
	reserve(peri, ident);

	portmux_setup(per);
	port_setup(ident, PERIPHERAL_USAGE);

	hard_local_irq_restore(flags);
	set_label(ident, label);

	return 0;
}
EXPORT_SYMBOL(peripheral_request);

int peripheral_request_list(const unsigned short per[], const char *label)
{
	u16 cnt;
	int ret;

	for (cnt = 0; per[cnt] != 0; cnt++) {

		ret = peripheral_request(per[cnt], label);

		if (ret < 0) {
			for ( ; cnt > 0; cnt--)
				peripheral_free(per[cnt - 1]);

			return ret;
		}
	}

	return 0;
}
EXPORT_SYMBOL(peripheral_request_list);

void peripheral_free(unsigned short per)
{
	unsigned long flags;
	unsigned short ident = P_IDENT(per);

	if (per & P_DONTCARE)
		return;

	if (!(per & P_DEFINED))
		return;

	flags = hard_local_irq_save();

	if (unlikely(!is_reserved(peri, ident, 0))) {
		hard_local_irq_restore(flags);
		return;
	}

	if (!(per & P_MAYSHARE))
		port_setup(ident, GPIO_USAGE);

	unreserve(peri, ident);

	set_label(ident, "free");

	hard_local_irq_restore(flags);
}
EXPORT_SYMBOL(peripheral_free);

void peripheral_free_list(const unsigned short per[])
{
	u16 cnt;
	for (cnt = 0; per[cnt] != 0; cnt++)
		peripheral_free(per[cnt]);
}
EXPORT_SYMBOL(peripheral_free_list);

/***********************************************************
*
* FUNCTIONS: Blackfin GPIO Driver
*
* INPUTS/OUTPUTS:
* gpio	PIO Number between 0 and MAX_BLACKFIN_GPIOS
* label	String
*
* DESCRIPTION: Blackfin GPIO Driver API
*
* CAUTION:
*************************************************************
* MODIFICATION HISTORY :
**************************************************************/

int bfin_gpio_request(unsigned gpio, const char *label)
{
	unsigned long flags;

	if (check_gpio(gpio) < 0)
		return -EINVAL;

	flags = hard_local_irq_save();

	/*
	 * Allow that the identical GPIO can
	 * be requested from the same driver twice
	 * Do nothing and return -
	 */

	if (cmp_label(gpio, label) == 0) {
		hard_local_irq_restore(flags);
		return 0;
	}

	if (unlikely(is_reserved(gpio, gpio, 1))) {
		if (system_state == SYSTEM_BOOTING)
			dump_stack();
		printk(KERN_ERR "bfin-gpio: GPIO %d is already reserved by %s !\n",
		       gpio, get_label(gpio));
		hard_local_irq_restore(flags);
		return -EBUSY;
	}
	if (unlikely(is_reserved(peri, gpio, 1))) {
		if (system_state == SYSTEM_BOOTING)
			dump_stack();
		printk(KERN_ERR
		       "bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n",
		       gpio, get_label(gpio));
		hard_local_irq_restore(flags);
		return -EBUSY;
	}
	if (unlikely(is_reserved(gpio_irq, gpio, 1))) {
		printk(KERN_NOTICE "bfin-gpio: GPIO %d is already reserved as gpio-irq!"
		       " (Documentation/blackfin/bfin-gpio-notes.txt)\n", gpio);
	}
#ifndef CONFIG_BF54x
	else {	/* Reset POLAR setting when acquiring a gpio for the first time */
		set_gpio_polar(gpio, 0);
	}
#endif

	reserve(gpio, gpio);
	set_label(gpio, label);

	hard_local_irq_restore(flags);

	port_setup(gpio, GPIO_USAGE);

	return 0;
}
EXPORT_SYMBOL(bfin_gpio_request);

void bfin_gpio_free(unsigned gpio)
{
	unsigned long flags;

	if (check_gpio(gpio) < 0)
		return;

	might_sleep();

	flags = hard_local_irq_save();

	if (unlikely(!is_reserved(gpio, gpio, 0))) {
		if (system_state == SYSTEM_BOOTING)
			dump_stack();
		gpio_error(gpio);
		hard_local_irq_restore(flags);
		return;
	}

	unreserve(gpio, gpio);

	set_label(gpio, "free");

	hard_local_irq_restore(flags);
}
EXPORT_SYMBOL(bfin_gpio_free);

#ifdef BFIN_SPECIAL_GPIO_BANKS
DECLARE_RESERVED_MAP(special_gpio, gpio_bank(MAX_RESOURCES));

int bfin_special_gpio_request(unsigned gpio, const char *label)
{
	unsigned long flags;

	flags = hard_local_irq_save();

	/*
	 * Allow that the identical GPIO can
	 * be requested from the same driver twice
	 * Do nothing and return -
	 */

	if (cmp_label(gpio, label) == 0) {
		hard_local_irq_restore(flags);
		return 0;
	}

	if (unlikely(is_reserved(special_gpio, gpio, 1))) {
		hard_local_irq_restore(flags);
		printk(KERN_ERR "bfin-gpio: GPIO %d is already reserved by %s !\n",
		       gpio, get_label(gpio));

		return -EBUSY;
	}
	if (unlikely(is_reserved(peri, gpio, 1))) {
		hard_local_irq_restore(flags);
		printk(KERN_ERR
		       "bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n",
		       gpio, get_label(gpio));

		return -EBUSY;
	}

	reserve(special_gpio, gpio);
	reserve(peri, gpio);

	set_label(gpio, label);
	hard_local_irq_restore(flags);
	port_setup(gpio, GPIO_USAGE);

	return 0;
}
EXPORT_SYMBOL(bfin_special_gpio_request);

void bfin_special_gpio_free(unsigned gpio)
{
	unsigned long flags;

	might_sleep();

	flags = hard_local_irq_save();

	if (unlikely(!is_reserved(special_gpio, gpio, 0))) {
		gpio_error(gpio);
		hard_local_irq_restore(flags);
		return;
	}

	unreserve(special_gpio, gpio);
	unreserve(peri, gpio);
	set_label(gpio, "free");
	hard_local_irq_restore(flags);
}
EXPORT_SYMBOL(bfin_special_gpio_free);
#endif


int bfin_gpio_irq_request(unsigned gpio, const char *label)
{
	unsigned long flags;

	if (check_gpio(gpio) < 0)
		return -EINVAL;

	flags = hard_local_irq_save();

	if (unlikely(is_reserved(peri, gpio, 1))) {
		if (system_state == SYSTEM_BOOTING)
			dump_stack();
		printk(KERN_ERR
		       "bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n",
		       gpio, get_label(gpio));
		hard_local_irq_restore(flags);
		return -EBUSY;
	}
	if (unlikely(is_reserved(gpio, gpio, 1)))
		printk(KERN_NOTICE "bfin-gpio: GPIO %d is already reserved by %s! "
		       "(Documentation/blackfin/bfin-gpio-notes.txt)\n",
		       gpio, get_label(gpio));

	reserve(gpio_irq, gpio);
	set_label(gpio, label);

	hard_local_irq_restore(flags);

	port_setup(gpio, GPIO_USAGE);

	return 0;
}

void bfin_gpio_irq_free(unsigned gpio)
{
	unsigned long flags;

	if (check_gpio(gpio) < 0)
		return;

	flags = hard_local_irq_save();

	if (unlikely(!is_reserved(gpio_irq, gpio, 0))) {
		if (system_state == SYSTEM_BOOTING)
			dump_stack();
		gpio_error(gpio);
		hard_local_irq_restore(flags);
		return;
	}

	unreserve(gpio_irq, gpio);

	set_label(gpio, "free");

	hard_local_irq_restore(flags);
}

static inline void __bfin_gpio_direction_input(unsigned gpio)
{
#ifdef CONFIG_BF54x
	gpio_array[gpio_bank(gpio)]->dir_clear = gpio_bit(gpio);
#else
	gpio_array[gpio_bank(gpio)]->dir &= ~gpio_bit(gpio);
#endif
	gpio_array[gpio_bank(gpio)]->inen |= gpio_bit(gpio);
}

int bfin_gpio_direction_input(unsigned gpio)
{
	unsigned long flags;

	if (unlikely(!is_reserved(gpio, gpio, 0))) {
		gpio_error(gpio);
		return -EINVAL;
	}

	flags = hard_local_irq_save();
	__bfin_gpio_direction_input(gpio);
	AWA_DUMMY_READ(inen);
	hard_local_irq_restore(flags);

	return 0;
}
EXPORT_SYMBOL(bfin_gpio_direction_input);

void bfin_gpio_irq_prepare(unsigned gpio)
{
#ifdef CONFIG_BF54x
	unsigned long flags;
#endif

	port_setup(gpio, GPIO_USAGE);

#ifdef CONFIG_BF54x
	flags = hard_local_irq_save();
	__bfin_gpio_direction_input(gpio);
	hard_local_irq_restore(flags);
#endif
}

void bfin_gpio_set_value(unsigned gpio, int arg)
{
	if (arg)
		gpio_array[gpio_bank(gpio)]->data_set = gpio_bit(gpio);
	else
		gpio_array[gpio_bank(gpio)]->data_clear = gpio_bit(gpio);
}
EXPORT_SYMBOL(bfin_gpio_set_value);

int bfin_gpio_direction_output(unsigned gpio, int value)
{
	unsigned long flags;

	if (unlikely(!is_reserved(gpio, gpio, 0))) {
		gpio_error(gpio);
		return -EINVAL;
	}

	flags = hard_local_irq_save();

	gpio_array[gpio_bank(gpio)]->inen &= ~gpio_bit(gpio);
	gpio_set_value(gpio, value);
#ifdef CONFIG_BF54x
	gpio_array[gpio_bank(gpio)]->dir_set = gpio_bit(gpio);
#else
	gpio_array[gpio_bank(gpio)]->dir |= gpio_bit(gpio);
#endif

	AWA_DUMMY_READ(dir);
	hard_local_irq_restore(flags);

	return 0;
}
EXPORT_SYMBOL(bfin_gpio_direction_output);

int bfin_gpio_get_value(unsigned gpio)
{
#ifdef CONFIG_BF54x
	return (1 & (gpio_array[gpio_bank(gpio)]->data >> gpio_sub_n(gpio)));
#else
	unsigned long flags;

	if (unlikely(get_gpio_edge(gpio))) {
		int ret;
		flags = hard_local_irq_save();
		set_gpio_edge(gpio, 0);
		ret = get_gpio_data(gpio);
		set_gpio_edge(gpio, 1);
		hard_local_irq_restore(flags);
		return ret;
	} else
		return get_gpio_data(gpio);
#endif
}
EXPORT_SYMBOL(bfin_gpio_get_value);

/* If we are booting from SPI and our board lacks a strong enough pull up,
 * the core can reset and execute the bootrom faster than the resistor can
 * pull the signal logically high.  To work around this (common) error in
 * board design, we explicitly set the pin back to GPIO mode, force /CS
 * high, and wait for the electrons to do their thing.
 *
 * This function only makes sense to be called from reset code, but it
 * lives here as we need to force all the GPIO states w/out going through
 * BUG() checks and such.
 */
void bfin_reset_boot_spi_cs(unsigned short pin)
{
	unsigned short gpio = P_IDENT(pin);
	port_setup(gpio, GPIO_USAGE);
	gpio_array[gpio_bank(gpio)]->data_set = gpio_bit(gpio);
	AWA_DUMMY_READ(data_set);
	udelay(1);
}

#if defined(CONFIG_PROC_FS)
static int gpio_proc_show(struct seq_file *m, void *v)
{
	int c, irq, gpio;

	for (c = 0; c < MAX_RESOURCES; c++) {
		irq = is_reserved(gpio_irq, c, 1);
		gpio = is_reserved(gpio, c, 1);
		if (!check_gpio(c) && (gpio || irq))
			seq_printf(m, "GPIO_%d: \t%s%s \t\tGPIO %s\n", c,
				 get_label(c), (gpio && irq) ? " *" : "",
				 get_gpio_dir(c) ? "OUTPUT" : "INPUT");
		else if (is_reserved(peri, c, 1))
			seq_printf(m, "GPIO_%d: \t%s \t\tPeripheral\n", c, get_label(c));
		else
			continue;
	}

	return 0;
}

static int gpio_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, gpio_proc_show, NULL);
}

static const struct file_operations gpio_proc_ops = {
	.open		= gpio_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};

static __init int gpio_register_proc(void)
{
	struct proc_dir_entry *proc_gpio;

	proc_gpio = proc_create("gpio", S_IRUGO, NULL, &gpio_proc_ops);
	return proc_gpio != NULL;
}
__initcall(gpio_register_proc);
#endif

#ifdef CONFIG_GPIOLIB
static int bfin_gpiolib_direction_input(struct gpio_chip *chip, unsigned gpio)
{
	return bfin_gpio_direction_input(gpio);
}

static int bfin_gpiolib_direction_output(struct gpio_chip *chip, unsigned gpio, int level)
{
	return bfin_gpio_direction_output(gpio, level);
}

static int bfin_gpiolib_get_value(struct gpio_chip *chip, unsigned gpio)
{
	return bfin_gpio_get_value(gpio);
}

static void bfin_gpiolib_set_value(struct gpio_chip *chip, unsigned gpio, int value)
{
	return bfin_gpio_set_value(gpio, value);
}

static int bfin_gpiolib_gpio_request(struct gpio_chip *chip, unsigned gpio)
{
	return bfin_gpio_request(gpio, chip->label);
}

static void bfin_gpiolib_gpio_free(struct gpio_chip *chip, unsigned gpio)
{
	return bfin_gpio_free(gpio);
}

static int bfin_gpiolib_gpio_to_irq(struct gpio_chip *chip, unsigned gpio)
{
	return gpio + GPIO_IRQ_BASE;
}

static struct gpio_chip bfin_chip = {
	.label			= "BFIN-GPIO",
	.direction_input	= bfin_gpiolib_direction_input,
	.get			= bfin_gpiolib_get_value,
	.direction_output	= bfin_gpiolib_direction_output,
	.set			= bfin_gpiolib_set_value,
	.request		= bfin_gpiolib_gpio_request,
	.free			= bfin_gpiolib_gpio_free,
	.to_irq			= bfin_gpiolib_gpio_to_irq,
	.base			= 0,
	.ngpio			= MAX_BLACKFIN_GPIOS,
};

static int __init bfin_gpiolib_setup(void)
{
	return gpiochip_add(&bfin_chip);
}
arch_initcall(bfin_gpiolib_setup);
#endif