summaryrefslogtreecommitdiff
path: root/arch/arm/mach-omap1/board-ams-delta.c
blob: 9808cd27e2cf9359108ee6df0c1d63052ce52dd9 (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
// SPDX-License-Identifier: GPL-2.0-only
/*
 * linux/arch/arm/mach-omap1/board-ams-delta.c
 *
 * Modified from board-generic.c
 *
 * Board specific inits for the Amstrad E3 (codename Delta) videophone
 *
 * Copyright (C) 2006 Jonathan McDowell <noodles@earth.li>
 */
#include <linux/gpio/driver.h>
#include <linux/gpio/machine.h>
#include <linux/gpio/consumer.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/leds.h>
#include <linux/mtd/nand-gpio.h>
#include <linux/mtd/partitions.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
#include <linux/serial_8250.h>
#include <linux/export.h>
#include <linux/omapfb.h>
#include <linux/io.h>
#include <linux/platform_data/gpio-omap.h>
#include <linux/soc/ti/omap1-mux.h>

#include <asm/serial.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>

#include <linux/platform_data/keypad-omap.h>

#include "hardware.h"
#include "usb.h"
#include "ams-delta-fiq.h"
#include "board-ams-delta.h"
#include "iomap.h"
#include "common.h"

static const unsigned int ams_delta_keymap[] = {
	KEY(0, 0, KEY_F1),		/* Advert    */

	KEY(0, 3, KEY_COFFEE),		/* Games     */
	KEY(0, 2, KEY_QUESTION),	/* Directory */
	KEY(2, 3, KEY_CONNECT),		/* Internet  */
	KEY(1, 2, KEY_SHOP),		/* Services  */
	KEY(1, 1, KEY_PHONE),		/* VoiceMail */

	KEY(0, 1, KEY_DELETE),		/* Delete    */
	KEY(2, 2, KEY_PLAY),		/* Play      */
	KEY(1, 0, KEY_PAGEUP),		/* Up        */
	KEY(1, 3, KEY_PAGEDOWN),	/* Down      */
	KEY(2, 0, KEY_EMAIL),		/* ReadEmail */
	KEY(2, 1, KEY_STOP),		/* Stop      */

	/* Numeric keypad portion */
	KEY(0, 7, KEY_KP1),
	KEY(0, 6, KEY_KP2),
	KEY(0, 5, KEY_KP3),
	KEY(1, 7, KEY_KP4),
	KEY(1, 6, KEY_KP5),
	KEY(1, 5, KEY_KP6),
	KEY(2, 7, KEY_KP7),
	KEY(2, 6, KEY_KP8),
	KEY(2, 5, KEY_KP9),
	KEY(3, 6, KEY_KP0),
	KEY(3, 7, KEY_KPASTERISK),
	KEY(3, 5, KEY_KPDOT),		/* # key     */
	KEY(7, 2, KEY_NUMLOCK),		/* Mute      */
	KEY(7, 1, KEY_KPMINUS),		/* Recall    */
	KEY(6, 1, KEY_KPPLUS),		/* Redial    */
	KEY(7, 6, KEY_KPSLASH),		/* Handsfree */
	KEY(6, 0, KEY_ENTER),		/* Video     */

	KEY(7, 4, KEY_CAMERA),		/* Photo     */

	KEY(0, 4, KEY_F2),		/* Home      */
	KEY(1, 4, KEY_F3),		/* Office    */
	KEY(2, 4, KEY_F4),		/* Mobile    */
	KEY(7, 7, KEY_F5),		/* SMS       */
	KEY(7, 5, KEY_F6),		/* Email     */

	/* QWERTY portion of keypad */
	KEY(3, 4, KEY_Q),
	KEY(3, 3, KEY_W),
	KEY(3, 2, KEY_E),
	KEY(3, 1, KEY_R),
	KEY(3, 0, KEY_T),
	KEY(4, 7, KEY_Y),
	KEY(4, 6, KEY_U),
	KEY(4, 5, KEY_I),
	KEY(4, 4, KEY_O),
	KEY(4, 3, KEY_P),

	KEY(4, 2, KEY_A),
	KEY(4, 1, KEY_S),
	KEY(4, 0, KEY_D),
	KEY(5, 7, KEY_F),
	KEY(5, 6, KEY_G),
	KEY(5, 5, KEY_H),
	KEY(5, 4, KEY_J),
	KEY(5, 3, KEY_K),
	KEY(5, 2, KEY_L),

	KEY(5, 1, KEY_Z),
	KEY(5, 0, KEY_X),
	KEY(6, 7, KEY_C),
	KEY(6, 6, KEY_V),
	KEY(6, 5, KEY_B),
	KEY(6, 4, KEY_N),
	KEY(6, 3, KEY_M),
	KEY(6, 2, KEY_SPACE),

	KEY(7, 0, KEY_LEFTSHIFT),	/* Vol up    */
	KEY(7, 3, KEY_LEFTCTRL),	/* Vol down  */
};

#define LATCH1_PHYS	0x01000000
#define LATCH1_VIRT	0xEA000000
#define MODEM_PHYS	0x04000000
#define MODEM_VIRT	0xEB000000
#define LATCH2_PHYS	0x08000000
#define LATCH2_VIRT	0xEC000000

static struct map_desc ams_delta_io_desc[] __initdata = {
	/* AMS_DELTA_LATCH1 */
	{
		.virtual	= LATCH1_VIRT,
		.pfn		= __phys_to_pfn(LATCH1_PHYS),
		.length		= 0x01000000,
		.type		= MT_DEVICE
	},
	/* AMS_DELTA_LATCH2 */
	{
		.virtual	= LATCH2_VIRT,
		.pfn		= __phys_to_pfn(LATCH2_PHYS),
		.length		= 0x01000000,
		.type		= MT_DEVICE
	},
	/* AMS_DELTA_MODEM */
	{
		.virtual	= MODEM_VIRT,
		.pfn		= __phys_to_pfn(MODEM_PHYS),
		.length		= 0x01000000,
		.type		= MT_DEVICE
	}
};

static const struct omap_lcd_config ams_delta_lcd_config __initconst = {
	.ctrl_name	= "internal",
};

static struct omap_usb_config ams_delta_usb_config __initdata = {
	.register_host	= 1,
	.hmc_mode	= 16,
	.pins[0]	= 2,
};

#define LATCH1_NGPIO		8

static struct resource latch1_resources[] = {
	[0] = {
		.name	= "dat",
		.start	= LATCH1_PHYS,
		.end	= LATCH1_PHYS + (LATCH1_NGPIO - 1) / 8,
		.flags	= IORESOURCE_MEM,
	},
};

#define LATCH1_LABEL	"latch1"

static struct bgpio_pdata latch1_pdata = {
	.label	= LATCH1_LABEL,
	.base	= -1,
	.ngpio	= LATCH1_NGPIO,
};

static struct platform_device latch1_gpio_device = {
	.name		= "basic-mmio-gpio",
	.id		= 0,
	.resource	= latch1_resources,
	.num_resources	= ARRAY_SIZE(latch1_resources),
	.dev		= {
		.platform_data	= &latch1_pdata,
	},
};

#define LATCH1_PIN_LED_CAMERA		0
#define LATCH1_PIN_LED_ADVERT		1
#define LATCH1_PIN_LED_MAIL		2
#define LATCH1_PIN_LED_HANDSFREE	3
#define LATCH1_PIN_LED_VOICEMAIL	4
#define LATCH1_PIN_LED_VOICE		5
#define LATCH1_PIN_DOCKIT1		6
#define LATCH1_PIN_DOCKIT2		7

#define LATCH2_NGPIO			16

static struct resource latch2_resources[] = {
	[0] = {
		.name	= "dat",
		.start	= LATCH2_PHYS,
		.end	= LATCH2_PHYS + (LATCH2_NGPIO - 1) / 8,
		.flags	= IORESOURCE_MEM,
	},
};

#define LATCH2_LABEL	"latch2"

static struct bgpio_pdata latch2_pdata = {
	.label	= LATCH2_LABEL,
	.base	= -1,
	.ngpio	= LATCH2_NGPIO,
};

static struct platform_device latch2_gpio_device = {
	.name		= "basic-mmio-gpio",
	.id		= 1,
	.resource	= latch2_resources,
	.num_resources	= ARRAY_SIZE(latch2_resources),
	.dev		= {
		.platform_data	= &latch2_pdata,
	},
};

#define LATCH2_PIN_LCD_VBLEN		0
#define LATCH2_PIN_LCD_NDISP		1
#define LATCH2_PIN_NAND_NCE		2
#define LATCH2_PIN_NAND_NRE		3
#define LATCH2_PIN_NAND_NWP		4
#define LATCH2_PIN_NAND_NWE		5
#define LATCH2_PIN_NAND_ALE		6
#define LATCH2_PIN_NAND_CLE		7
#define LATCH2_PIN_KEYBRD_PWR		8
#define LATCH2_PIN_KEYBRD_DATAOUT	9
#define LATCH2_PIN_SCARD_RSTIN		10
#define LATCH2_PIN_SCARD_CMDVCC		11
#define LATCH2_PIN_MODEM_NRESET		12
#define LATCH2_PIN_MODEM_CODEC		13
#define LATCH2_PIN_HANDSFREE_MUTE	14
#define LATCH2_PIN_HANDSET_MUTE		15

static struct regulator_consumer_supply modem_nreset_consumers[] = {
	REGULATOR_SUPPLY("RESET#", "serial8250.1"),
	REGULATOR_SUPPLY("POR", "cx20442-codec"),
};

static struct regulator_init_data modem_nreset_data = {
	.constraints		= {
		.valid_ops_mask		= REGULATOR_CHANGE_STATUS,
		.boot_on		= 1,
	},
	.num_consumer_supplies	= ARRAY_SIZE(modem_nreset_consumers),
	.consumer_supplies	= modem_nreset_consumers,
};

static struct fixed_voltage_config modem_nreset_config = {
	.supply_name		= "modem_nreset",
	.microvolts		= 3300000,
	.startup_delay		= 25000,
	.enabled_at_boot	= 1,
	.init_data		= &modem_nreset_data,
};

static struct platform_device modem_nreset_device = {
	.name	= "reg-fixed-voltage",
	.id	= -1,
	.dev	= {
		.platform_data	= &modem_nreset_config,
	},
};

static struct gpiod_lookup_table ams_delta_nreset_gpiod_table = {
	.dev_id = "reg-fixed-voltage",
	.table = {
		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_NRESET,
			    NULL, GPIO_ACTIVE_HIGH),
		{ },
	},
};

struct modem_private_data {
	struct regulator *regulator;
};

static struct modem_private_data modem_priv;

/*
 * Define partitions for flash device
 */

static struct mtd_partition partition_info[] = {
	{ .name		= "Kernel",
	  .offset	= 0,
	  .size		= 3 * SZ_1M + SZ_512K },
	{ .name		= "u-boot",
	  .offset	= 3 * SZ_1M + SZ_512K,
	  .size		= SZ_256K },
	{ .name		= "u-boot params",
	  .offset	= 3 * SZ_1M + SZ_512K + SZ_256K,
	  .size		= SZ_256K },
	{ .name		= "Amstrad LDR",
	  .offset	= 4 * SZ_1M,
	  .size		= SZ_256K },
	{ .name		= "File system",
	  .offset	= 4 * SZ_1M + 1 * SZ_256K,
	  .size		= 27 * SZ_1M },
	{ .name		= "PBL reserved",
	  .offset	= 32 * SZ_1M - 3 * SZ_256K,
	  .size		=  3 * SZ_256K },
};

static struct gpio_nand_platdata nand_platdata = {
	.parts		= partition_info,
	.num_parts	= ARRAY_SIZE(partition_info),
};

static struct platform_device ams_delta_nand_device = {
	.name	= "ams-delta-nand",
	.id	= -1,
	.dev	= {
		.platform_data = &nand_platdata,
	},
};

#define OMAP_GPIO_LABEL		"gpio-0-15"
#define OMAP_MPUIO_LABEL	"mpuio"

static struct gpiod_lookup_table ams_delta_nand_gpio_table = {
	.table = {
		GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_NAND_RB, "rdy",
			    0),
		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NCE, "nce",
			    GPIO_ACTIVE_LOW),
		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NRE, "nre",
			    GPIO_ACTIVE_LOW),
		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWP, "nwp",
			    GPIO_ACTIVE_LOW),
		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWE, "nwe",
			    GPIO_ACTIVE_LOW),
		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_ALE, "ale", 0),
		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_CLE, "cle", 0),
		GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 0, "data", 0, 0),
		GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 1, "data", 1, 0),
		GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 2, "data", 2, 0),
		GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 3, "data", 3, 0),
		GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 4, "data", 4, 0),
		GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 5, "data", 5, 0),
		GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 6, "data", 6, 0),
		GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 7, "data", 7, 0),
		{ },
	},
};

static struct resource ams_delta_kp_resources[] = {
	[0] = {
		.start	= INT_KEYBOARD,
		.end	= INT_KEYBOARD,
		.flags	= IORESOURCE_IRQ,
	},
};

static const struct matrix_keymap_data ams_delta_keymap_data = {
	.keymap		= ams_delta_keymap,
	.keymap_size	= ARRAY_SIZE(ams_delta_keymap),
};

static struct omap_kp_platform_data ams_delta_kp_data = {
	.rows		= 8,
	.cols		= 8,
	.keymap_data	= &ams_delta_keymap_data,
	.delay		= 9,
};

static struct platform_device ams_delta_kp_device = {
	.name		= "omap-keypad",
	.id		= -1,
	.dev		= {
		.platform_data = &ams_delta_kp_data,
	},
	.num_resources	= ARRAY_SIZE(ams_delta_kp_resources),
	.resource	= ams_delta_kp_resources,
};

static struct platform_device ams_delta_lcd_device = {
	.name	= "lcd_ams_delta",
	.id	= -1,
};

static struct gpiod_lookup_table ams_delta_lcd_gpio_table = {
	.table = {
		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_LCD_VBLEN, "vblen", 0),
		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_LCD_NDISP, "ndisp", 0),
		{ },
	},
};

static struct gpio_led gpio_leds[] __initdata = {
	[LATCH1_PIN_LED_CAMERA] = {
		.name		 = "camera",
		.default_state	 = LEDS_GPIO_DEFSTATE_OFF,
	},
	[LATCH1_PIN_LED_ADVERT] = {
		.name		 = "advert",
		.default_state	 = LEDS_GPIO_DEFSTATE_OFF,
	},
	[LATCH1_PIN_LED_MAIL] = {
		.name		 = "email",
		.default_state	 = LEDS_GPIO_DEFSTATE_OFF,
	},
	[LATCH1_PIN_LED_HANDSFREE] = {
		.name		 = "handsfree",
		.default_state	 = LEDS_GPIO_DEFSTATE_OFF,
	},
	[LATCH1_PIN_LED_VOICEMAIL] = {
		.name		 = "voicemail",
		.default_state	 = LEDS_GPIO_DEFSTATE_OFF,
	},
	[LATCH1_PIN_LED_VOICE] = {
		.name		 = "voice",
		.default_state	 = LEDS_GPIO_DEFSTATE_OFF,
	},
};

static const struct gpio_led_platform_data leds_pdata __initconst = {
	.leds		= gpio_leds,
	.num_leds	= ARRAY_SIZE(gpio_leds),
};

static struct gpiod_lookup_table leds_gpio_table = {
	.table = {
		GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_CAMERA, NULL,
				LATCH1_PIN_LED_CAMERA, 0),
		GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_ADVERT, NULL,
				LATCH1_PIN_LED_ADVERT, 0),
		GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_MAIL, NULL,
				LATCH1_PIN_LED_MAIL, 0),
		GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_HANDSFREE, NULL,
				LATCH1_PIN_LED_HANDSFREE, 0),
		GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_VOICEMAIL, NULL,
				LATCH1_PIN_LED_VOICEMAIL, 0),
		GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_VOICE, NULL,
				LATCH1_PIN_LED_VOICE, 0),
		{ },
	},
};

static struct platform_device ams_delta_audio_device = {
	.name   = "ams-delta-audio",
	.id     = -1,
};

static struct gpiod_lookup_table ams_delta_audio_gpio_table = {
	.table = {
		GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_HOOK_SWITCH,
			    "hook_switch", 0),
		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_CODEC,
			    "modem_codec", 0),
		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_HANDSFREE_MUTE,
			    "handsfree_mute", 0),
		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_HANDSET_MUTE,
			    "handset_mute", 0),
		{ },
	},
};

static struct platform_device cx20442_codec_device = {
	.name   = "cx20442-codec",
	.id     = -1,
};

static struct resource ams_delta_serio_resources[] = {
	{
		.flags	= IORESOURCE_IRQ,
		/*
		 * Initialize IRQ resource with invalid IRQ number.
		 * It will be replaced with dynamically allocated GPIO IRQ
		 * obtained from GPIO chip as soon as the chip is available.
		 */
		.start	= -EINVAL,
		.end	= -EINVAL,
	},
};

static struct platform_device ams_delta_serio_device = {
	.name		= "ams-delta-serio",
	.id		= PLATFORM_DEVID_NONE,
	.dev		= {
		/*
		 * Initialize .platform_data explicitly with NULL to
		 * indicate it is going to be used.  It will be replaced
		 * with FIQ buffer address as soon as FIQ is initialized.
		 */
		.platform_data = NULL,
	},
	.num_resources	= ARRAY_SIZE(ams_delta_serio_resources),
	.resource	= ams_delta_serio_resources,
};

static struct regulator_consumer_supply keybrd_pwr_consumers[] = {
	/*
	 * Initialize supply .dev_name with NULL.  It will be replaced
	 * with serio dev_name() as soon as the serio device is registered.
	 */
	REGULATOR_SUPPLY("vcc", NULL),
};

static struct regulator_init_data keybrd_pwr_initdata = {
	.constraints		= {
		.valid_ops_mask		= REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies	= ARRAY_SIZE(keybrd_pwr_consumers),
	.consumer_supplies	= keybrd_pwr_consumers,
};

static struct fixed_voltage_config keybrd_pwr_config = {
	.supply_name		= "keybrd_pwr",
	.microvolts		= 5000000,
	.init_data		= &keybrd_pwr_initdata,
};

static struct platform_device keybrd_pwr_device = {
	.name	= "reg-fixed-voltage",
	.id	= PLATFORM_DEVID_AUTO,
	.dev	= {
		.platform_data	= &keybrd_pwr_config,
	},
};

static struct gpiod_lookup_table keybrd_pwr_gpio_table = {
	.table = {
		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_KEYBRD_PWR, NULL,
			    GPIO_ACTIVE_HIGH),
		{ },
	},
};

static struct platform_device *ams_delta_devices[] __initdata = {
	&latch1_gpio_device,
	&latch2_gpio_device,
	&ams_delta_kp_device,
	&ams_delta_audio_device,
	&ams_delta_serio_device,
	&ams_delta_nand_device,
	&ams_delta_lcd_device,
	&cx20442_codec_device,
};

static struct gpiod_lookup_table *ams_delta_gpio_tables[] __initdata = {
	&ams_delta_nreset_gpiod_table,
	&ams_delta_audio_gpio_table,
	&keybrd_pwr_gpio_table,
	&ams_delta_lcd_gpio_table,
	&ams_delta_nand_gpio_table,
};

/*
 * Some drivers may not use GPIO lookup tables but need to be provided
 * with GPIO numbers.  The same applies to GPIO based IRQ lines - some
 * drivers may even not use GPIO layer but expect just IRQ numbers.
 * We could either define GPIO lookup tables then use them on behalf
 * of those devices, or we can use GPIO driver level methods for
 * identification of GPIO and IRQ numbers. For the purpose of the latter,
 * defina a helper function which identifies GPIO chips by their labels.
 */
static int gpiochip_match_by_label(struct gpio_chip *chip, void *data)
{
	char *label = data;

	return !strcmp(label, chip->label);
}

static struct gpiod_hog ams_delta_gpio_hogs[] = {
	GPIO_HOG(LATCH2_LABEL, LATCH2_PIN_KEYBRD_DATAOUT, "keybrd_dataout",
		 GPIO_ACTIVE_HIGH, GPIOD_OUT_LOW),
	{},
};

static struct plat_serial8250_port ams_delta_modem_ports[];

/*
 * Obtain MODEM IRQ GPIO descriptor using its hardware pin
 * number and assign related IRQ number to the MODEM port.
 * Keep the GPIO descriptor open so nobody steps in.
 */
static void __init modem_assign_irq(struct gpio_chip *chip)
{
	struct gpio_desc *gpiod;

	gpiod = gpiochip_request_own_desc(chip, AMS_DELTA_GPIO_PIN_MODEM_IRQ,
					  "modem_irq", GPIO_ACTIVE_HIGH,
					  GPIOD_IN);
	if (IS_ERR(gpiod)) {
		pr_err("%s: modem IRQ GPIO request failed (%ld)\n", __func__,
		       PTR_ERR(gpiod));
	} else {
		ams_delta_modem_ports[0].irq = gpiod_to_irq(gpiod);
	}
}

/*
 * The purpose of this function is to take care of proper initialization of
 * devices and data structures which depend on GPIO lines provided by OMAP GPIO
 * banks but their drivers don't use GPIO lookup tables or GPIO layer at all.
 * The function may be called as soon as OMAP GPIO devices are probed.
 * Since that happens at postcore_initcall, it can be called successfully
 * from init_machine or later.
 * Dependent devices may be registered from within this function or later.
 */
static void __init omap_gpio_deps_init(void)
{
	struct gpio_chip *chip;

	chip = gpiochip_find(OMAP_GPIO_LABEL, gpiochip_match_by_label);
	if (!chip) {
		pr_err("%s: OMAP GPIO chip not found\n", __func__);
		return;
	}

	/*
	 * Start with FIQ initialization as it may have to request
	 * and release successfully each OMAP GPIO pin in turn.
	 */
	ams_delta_init_fiq(chip, &ams_delta_serio_device);

	modem_assign_irq(chip);
}

/*
 * Initialize latch2 pins with values which are safe for dependent on-board
 * devices or useful for their successull initialization even before GPIO
 * driver takes control over the latch pins:
 * - LATCH2_PIN_LCD_VBLEN	= 0
 * - LATCH2_PIN_LCD_NDISP	= 0	Keep LCD device powered off before its
 *					driver takes control over it.
 * - LATCH2_PIN_NAND_NCE	= 0
 * - LATCH2_PIN_NAND_NWP	= 0	Keep NAND device down and write-
 *					protected before its driver takes
 *					control over it.
 * - LATCH2_PIN_KEYBRD_PWR	= 0	Keep keyboard powered off before serio
 *					driver takes control over it.
 * - LATCH2_PIN_KEYBRD_DATAOUT	= 0	Keep low to avoid corruption of first
 *					byte of data received from attached
 *					keyboard when serio device is probed;
 *					the pin is also hogged low by the latch2
 *					GPIO driver as soon as it is ready.
 * - LATCH2_PIN_MODEM_NRESET	= 1	Enable voice MODEM device, allowing for
 *					its successful probe even before a
 *					regulator it depends on, which in turn
 *					takes control over the pin, is set up.
 * - LATCH2_PIN_MODEM_CODEC	= 1	Attach voice MODEM CODEC data port
 *					to the MODEM so the CODEC is under
 *					control even if audio driver doesn't
 *					take it over.
 */
static void __init ams_delta_latch2_init(void)
{
	u16 latch2 = 1 << LATCH2_PIN_MODEM_NRESET | 1 << LATCH2_PIN_MODEM_CODEC;

	__raw_writew(latch2, IOMEM(LATCH2_VIRT));
}

static void __init ams_delta_init(void)
{
	struct platform_device *leds_pdev;

	/* mux pins for uarts */
	omap_cfg_reg(UART1_TX);
	omap_cfg_reg(UART1_RTS);

	/* parallel camera interface */
	omap_cfg_reg(H19_1610_CAM_EXCLK);
	omap_cfg_reg(J15_1610_CAM_LCLK);
	omap_cfg_reg(L18_1610_CAM_VS);
	omap_cfg_reg(L15_1610_CAM_HS);
	omap_cfg_reg(L19_1610_CAM_D0);
	omap_cfg_reg(K14_1610_CAM_D1);
	omap_cfg_reg(K15_1610_CAM_D2);
	omap_cfg_reg(K19_1610_CAM_D3);
	omap_cfg_reg(K18_1610_CAM_D4);
	omap_cfg_reg(J14_1610_CAM_D5);
	omap_cfg_reg(J19_1610_CAM_D6);
	omap_cfg_reg(J18_1610_CAM_D7);

	omap_gpio_deps_init();
	ams_delta_latch2_init();
	gpiod_add_hogs(ams_delta_gpio_hogs);

	omap_serial_init();
	omap_register_i2c_bus(1, 100, NULL, 0);

	omap1_usb_init(&ams_delta_usb_config);
	platform_add_devices(ams_delta_devices, ARRAY_SIZE(ams_delta_devices));

	/*
	 * As soon as regulator consumers have been registered, assign their
	 * dev_names to consumer supply entries of respective regulators.
	 */
	keybrd_pwr_consumers[0].dev_name =
			dev_name(&ams_delta_serio_device.dev);

	/*
	 * Once consumer supply entries are populated with dev_names,
	 * register regulator devices.  At this stage only the keyboard
	 * power regulator has its consumer supply table fully populated.
	 */
	platform_device_register(&keybrd_pwr_device);

	/*
	 * As soon as GPIO consumers have been registered, assign
	 * their dev_names to respective GPIO lookup tables.
	 */
	ams_delta_audio_gpio_table.dev_id =
			dev_name(&ams_delta_audio_device.dev);
	keybrd_pwr_gpio_table.dev_id = dev_name(&keybrd_pwr_device.dev);
	ams_delta_nand_gpio_table.dev_id = dev_name(&ams_delta_nand_device.dev);
	ams_delta_lcd_gpio_table.dev_id = dev_name(&ams_delta_lcd_device.dev);

	/*
	 * Once GPIO lookup tables are populated with dev_names, register them.
	 */
	gpiod_add_lookup_tables(ams_delta_gpio_tables,
				ARRAY_SIZE(ams_delta_gpio_tables));

	leds_pdev = gpio_led_register_device(PLATFORM_DEVID_NONE, &leds_pdata);
	if (!IS_ERR_OR_NULL(leds_pdev)) {
		leds_gpio_table.dev_id = dev_name(&leds_pdev->dev);
		gpiod_add_lookup_table(&leds_gpio_table);
	}

	omap_writew(omap_readw(ARM_RSTCT1) | 0x0004, ARM_RSTCT1);

	omapfb_set_lcd_config(&ams_delta_lcd_config);
}

static void modem_pm(struct uart_port *port, unsigned int state, unsigned old)
{
	struct modem_private_data *priv = port->private_data;
	int ret;

	if (!priv)
		return;

	if (IS_ERR(priv->regulator))
		return;

	if (state == old)
		return;

	if (state == 0)
		ret = regulator_enable(priv->regulator);
	else if (old == 0)
		ret = regulator_disable(priv->regulator);
	else
		ret = 0;

	if (ret)
		dev_warn(port->dev,
			 "ams_delta modem_pm: failed to %sable regulator: %d\n",
			 state ? "dis" : "en", ret);
}

static struct plat_serial8250_port ams_delta_modem_ports[] = {
	{
		.membase	= IOMEM(MODEM_VIRT),
		.mapbase	= MODEM_PHYS,
		.irq		= IRQ_NOTCONNECTED, /* changed later */
		.flags		= UPF_BOOT_AUTOCONF,
		.irqflags	= IRQF_TRIGGER_RISING,
		.iotype		= UPIO_MEM,
		.regshift	= 1,
		.uartclk	= BASE_BAUD * 16,
		.pm		= modem_pm,
		.private_data	= &modem_priv,
	},
	{ },
};

static struct platform_device ams_delta_modem_device = {
	.name	= "serial8250",
	.id	= PLAT8250_DEV_PLATFORM1,
	.dev		= {
		.platform_data = ams_delta_modem_ports,
	},
};

static int __init modem_nreset_init(void)
{
	int err;

	err = platform_device_register(&modem_nreset_device);
	if (err)
		pr_err("Couldn't register the modem regulator device\n");

	return err;
}


/*
 * This function expects MODEM IRQ number already assigned to the port.
 * The MODEM device requires its RESET# pin kept high during probe.
 * That requirement can be fulfilled in several ways:
 * - with a descriptor of already functional modem_nreset regulator
 *   assigned to the MODEM private data,
 * - with the regulator not yet controlled by modem_pm function but
 *   already enabled by default on probe,
 * - before the modem_nreset regulator is probed, with the pin already
 *   set high explicitly.
 * The last one is already guaranteed by ams_delta_latch2_init() called
 * from machine_init.
 * In order to avoid taking over ttyS0 device slot, the MODEM device
 * should be registered after OMAP serial ports.  Since those ports
 * are registered at arch_initcall, this function can be called safely
 * at arch_initcall_sync earliest.
 */
static int __init ams_delta_modem_init(void)
{
	if (!machine_is_ams_delta())
		return -ENODEV;

	omap_cfg_reg(M14_1510_GPIO2);

	/* Initialize the modem_nreset regulator consumer before use */
	modem_priv.regulator = ERR_PTR(-ENODEV);

	return platform_device_register(&ams_delta_modem_device);
}
arch_initcall_sync(ams_delta_modem_init);

static int __init late_init(void)
{
	int err;

	err = modem_nreset_init();
	if (err)
		return err;

	/*
	 * Once the modem device is registered, the modem_nreset
	 * regulator can be requested on behalf of that device.
	 */
	modem_priv.regulator = regulator_get(&ams_delta_modem_device.dev,
			"RESET#");
	if (IS_ERR(modem_priv.regulator)) {
		err = PTR_ERR(modem_priv.regulator);
		goto unregister;
	}
	return 0;

unregister:
	platform_device_unregister(&ams_delta_modem_device);
	return err;
}

static void __init ams_delta_init_late(void)
{
	omap1_init_late();
	late_init();
}

static void __init ams_delta_map_io(void)
{
	omap1_map_io();
	iotable_init(ams_delta_io_desc, ARRAY_SIZE(ams_delta_io_desc));
}

MACHINE_START(AMS_DELTA, "Amstrad E3 (Delta)")
	/* Maintainer: Jonathan McDowell <noodles@earth.li> */
	.atag_offset	= 0x100,
	.map_io		= ams_delta_map_io,
	.init_early	= omap1_init_early,
	.init_irq	= omap1_init_irq,
	.init_machine	= ams_delta_init,
	.init_late	= ams_delta_init_late,
	.init_time	= omap1_timer_init,
	.restart	= omap1_restart,
MACHINE_END