summaryrefslogtreecommitdiff
path: root/arch/arm/mach-sa1100/h3600.c
blob: b04d92271020ef1fd980bbf3b81a15d91ca65b5b (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
/*
 * Hardware definitions for Compaq iPAQ H3xxx Handheld Computers
 *
 * Copyright 2000,1 Compaq Computer Corporation.
 *
 * Use consistent with the GNU GPL is permitted,
 * provided that this copyright notice is
 * preserved in its entirety in all copies and derived works.
 *
 * COMPAQ COMPUTER CORPORATION MAKES NO WARRANTIES, EXPRESSED OR IMPLIED,
 * AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS
 * FITNESS FOR ANY PARTICULAR PURPOSE.
 *
 * Author: Jamey Hicks.
 *
 * History:
 *
 * 2001-10-??	Andrew Christian   Added support for iPAQ H3800
 *				   and abstracted EGPIO interface.
 *
 */
#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/tty.h>
#include <linux/pm.h>
#include <linux/device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/serial_core.h>

#include <asm/irq.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/setup.h>

#include <asm/mach/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/irda.h>
#include <asm/mach/map.h>
#include <asm/mach/serial_sa1100.h>

#include <asm/arch/h3600.h>

#if defined (CONFIG_SA1100_H3600) || defined (CONFIG_SA1100_H3100)
#include <asm/arch/h3600_gpio.h>
#endif

#ifdef CONFIG_SA1100_H3800
#include <asm/arch/h3600_asic.h>
#endif

#include "generic.h"

struct ipaq_model_ops ipaq_model_ops;
EXPORT_SYMBOL(ipaq_model_ops);

static struct mtd_partition h3xxx_partitions[] = {
	{
		.name		= "H3XXX boot firmware",
		.size		= 0x00040000,
		.offset		= 0,
		.mask_flags	= MTD_WRITEABLE,  /* force read-only */
	}, {
#ifdef CONFIG_MTD_2PARTS_IPAQ
		.name		= "H3XXX root jffs2",
		.size		= MTDPART_SIZ_FULL,
		.offset		= 0x00040000,
#else
		.name		= "H3XXX kernel",
		.size		= 0x00080000,
		.offset		= 0x00040000,
	}, {
		.name		= "H3XXX params",
		.size		= 0x00040000,
		.offset		= 0x000C0000,
	}, {
#ifdef CONFIG_JFFS2_FS
		.name		= "H3XXX root jffs2",
		.size		= MTDPART_SIZ_FULL,
		.offset		= 0x00100000,
#else
		.name		= "H3XXX initrd",
		.size		= 0x00100000,
		.offset		= 0x00100000,
	}, {
		.name		= "H3XXX root cramfs",
		.size		= 0x00300000,
		.offset		= 0x00200000,
	}, {
		.name		= "H3XXX usr cramfs",
		.size		= 0x00800000,
		.offset		= 0x00500000,
	}, {
		.name		= "H3XXX usr local",
		.size		= MTDPART_SIZ_FULL,
		.offset		= 0x00d00000,
#endif
#endif
	}
};

static void h3xxx_set_vpp(int vpp)
{
	assign_h3600_egpio(IPAQ_EGPIO_VPP_ON, vpp);
}

static struct flash_platform_data h3xxx_flash_data = {
	.map_name	= "cfi_probe",
	.set_vpp	= h3xxx_set_vpp,
	.parts		= h3xxx_partitions,
	.nr_parts	= ARRAY_SIZE(h3xxx_partitions),
};

static struct resource h3xxx_flash_resource = {
	.start		= SA1100_CS0_PHYS,
	.end		= SA1100_CS0_PHYS + SZ_32M - 1,
	.flags		= IORESOURCE_MEM,
};

/*
 * This turns the IRDA power on or off on the Compaq H3600
 */
static int h3600_irda_set_power(struct device *dev, unsigned int state)
{
	assign_h3600_egpio( IPAQ_EGPIO_IR_ON, state );

	return 0;
}

static void h3600_irda_set_speed(struct device *dev, unsigned int speed)
{
	if (speed < 4000000) {
		clr_h3600_egpio(IPAQ_EGPIO_IR_FSEL);
	} else {
		set_h3600_egpio(IPAQ_EGPIO_IR_FSEL);
	}
}

static struct irda_platform_data h3600_irda_data = {
	.set_power	= h3600_irda_set_power,
	.set_speed	= h3600_irda_set_speed,
};

static void h3xxx_mach_init(void)
{
	sa11x0_set_flash_data(&h3xxx_flash_data, &h3xxx_flash_resource, 1);
	sa11x0_set_irda_data(&h3600_irda_data);
}

/*
 * low-level UART features
 */

static void h3600_uart_set_mctrl(struct uart_port *port, u_int mctrl)
{
	if (port->mapbase == _Ser3UTCR0) {
		if (mctrl & TIOCM_RTS)
			GPCR = GPIO_H3600_COM_RTS;
		else
			GPSR = GPIO_H3600_COM_RTS;
	}
}

static u_int h3600_uart_get_mctrl(struct uart_port *port)
{
	u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;

	if (port->mapbase == _Ser3UTCR0) {
		int gplr = GPLR;
		/* DCD and CTS bits are inverted in GPLR by RS232 transceiver */
		if (gplr & GPIO_H3600_COM_DCD)
			ret &= ~TIOCM_CD;
		if (gplr & GPIO_H3600_COM_CTS)
			ret &= ~TIOCM_CTS;
	}

	return ret;
}

static void h3600_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
{
	if (port->mapbase == _Ser2UTCR0) { /* TODO: REMOVE THIS */
		assign_h3600_egpio(IPAQ_EGPIO_IR_ON, !state);
	} else if (port->mapbase == _Ser3UTCR0) {
		assign_h3600_egpio(IPAQ_EGPIO_RS232_ON, !state);
	}
}

/*
 * Enable/Disable wake up events for this serial port.
 * Obviously, we only support this on the normal COM port.
 */
static int h3600_uart_set_wake(struct uart_port *port, u_int enable)
{
	int err = -EINVAL;

	if (port->mapbase == _Ser3UTCR0) {
		if (enable)
			PWER |= PWER_GPIO23 | PWER_GPIO25; /* DCD and CTS */
		else
			PWER &= ~(PWER_GPIO23 | PWER_GPIO25); /* DCD and CTS */
		err = 0;
	}
	return err;
}

static struct sa1100_port_fns h3600_port_fns __initdata = {
	.set_mctrl	= h3600_uart_set_mctrl,
	.get_mctrl	= h3600_uart_get_mctrl,
	.pm		= h3600_uart_pm,
	.set_wake	= h3600_uart_set_wake,
};

/*
 * helper for sa1100fb
 */
static void h3xxx_lcd_power(int enable)
{
	assign_h3600_egpio(IPAQ_EGPIO_LCD_POWER, enable);
}

static struct map_desc h3600_io_desc[] __initdata = {
  	{	/* static memory bank 2  CS#2 */
		.virtual	=  H3600_BANK_2_VIRT,
		.pfn		= __phys_to_pfn(SA1100_CS2_PHYS),
		.length		= 0x02800000,
		.type		= MT_DEVICE
	}, {	/* static memory bank 4  CS#4 */
		.virtual	=  H3600_BANK_4_VIRT,
		.pfn		= __phys_to_pfn(SA1100_CS4_PHYS),
		.length		= 0x00800000,
		.type		= MT_DEVICE
	}, {	/* EGPIO 0		CS#5 */
		.virtual	=  H3600_EGPIO_VIRT,
		.pfn		= __phys_to_pfn(H3600_EGPIO_PHYS),
		.length		= 0x01000000,
		.type		= MT_DEVICE
	}
};

/*
 * Common map_io initialization
 */

static void __init h3xxx_map_io(void)
{
	sa1100_map_io();
	iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc));

	sa1100_register_uart_fns(&h3600_port_fns);
	sa1100_register_uart(0, 3); /* Common serial port */
//	sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */

	/* Ensure those pins are outputs and driving low  */
	PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM;
	PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);

	/* Configure suspend conditions */
	PGSR = 0;
	PWER = PWER_GPIO0 | PWER_RTC;
	PCFR = PCFR_OPDE;
	PSDR = 0;

	sa1100fb_lcd_power = h3xxx_lcd_power;
}

static __inline__ void do_blank(int setp)
{
	if (ipaq_model_ops.blank_callback)
		ipaq_model_ops.blank_callback(1-setp);
}

/************************* H3100 *************************/

#ifdef CONFIG_SA1100_H3100

#define H3100_EGPIO	(*(volatile unsigned int *)H3600_EGPIO_VIRT)
static unsigned int h3100_egpio = 0;

static void h3100_control_egpio(enum ipaq_egpio_type x, int setp)
{
	unsigned int egpio = 0;
	long	     gpio = 0;
	unsigned long flags;

	switch (x) {
	case IPAQ_EGPIO_LCD_POWER:
		egpio |= EGPIO_H3600_LCD_ON;
		gpio  |= GPIO_H3100_LCD_3V_ON;
		do_blank(setp);
		break;
	case IPAQ_EGPIO_LCD_ENABLE:
		break;
	case IPAQ_EGPIO_CODEC_NRESET:
		egpio |= EGPIO_H3600_CODEC_NRESET;
		break;
	case IPAQ_EGPIO_AUDIO_ON:
		gpio |= GPIO_H3100_AUD_PWR_ON
			| GPIO_H3100_AUD_ON;
		break;
	case IPAQ_EGPIO_QMUTE:
		gpio |= GPIO_H3100_QMUTE;
		break;
	case IPAQ_EGPIO_OPT_NVRAM_ON:
		egpio |= EGPIO_H3600_OPT_NVRAM_ON;
		break;
	case IPAQ_EGPIO_OPT_ON:
		egpio |= EGPIO_H3600_OPT_ON;
		break;
	case IPAQ_EGPIO_CARD_RESET:
		egpio |= EGPIO_H3600_CARD_RESET;
		break;
	case IPAQ_EGPIO_OPT_RESET:
		egpio |= EGPIO_H3600_OPT_RESET;
		break;
	case IPAQ_EGPIO_IR_ON:
		gpio |= GPIO_H3100_IR_ON;
		break;
	case IPAQ_EGPIO_IR_FSEL:
		gpio |= GPIO_H3100_IR_FSEL;
		break;
	case IPAQ_EGPIO_RS232_ON:
		egpio |= EGPIO_H3600_RS232_ON;
		break;
	case IPAQ_EGPIO_VPP_ON:
		egpio |= EGPIO_H3600_VPP_ON;
		break;
	}

	if (egpio || gpio) {
		local_irq_save(flags);
		if (setp) {
			h3100_egpio |= egpio;
			GPSR = gpio;
		} else {
			h3100_egpio &= ~egpio;
			GPCR = gpio;
		}
		H3100_EGPIO = h3100_egpio;
		local_irq_restore(flags);
	}
}

static unsigned long h3100_read_egpio(void)
{
	return h3100_egpio;
}

static int h3100_pm_callback(int req)
{
	if (ipaq_model_ops.pm_callback_aux)
		return ipaq_model_ops.pm_callback_aux(req);
	return 0;
}

static struct ipaq_model_ops h3100_model_ops __initdata = {
	.generic_name	= "3100",
	.control	= h3100_control_egpio,
	.read		= h3100_read_egpio,
	.pm_callback	= h3100_pm_callback
};

#define H3100_DIRECT_EGPIO (GPIO_H3100_BT_ON	  \
			  | GPIO_H3100_GPIO3	  \
			  | GPIO_H3100_QMUTE	  \
			  | GPIO_H3100_LCD_3V_ON  \
			  | GPIO_H3100_AUD_ON	  \
			  | GPIO_H3100_AUD_PWR_ON \
			  | GPIO_H3100_IR_ON	  \
			  | GPIO_H3100_IR_FSEL)

static void __init h3100_map_io(void)
{
	h3xxx_map_io();

	/* Initialize h3100-specific values here */
	GPCR = 0x0fffffff;	 /* All outputs are set low by default */
	GPDR = GPIO_H3600_COM_RTS  | GPIO_H3600_L3_CLOCK |
	       GPIO_H3600_L3_MODE  | GPIO_H3600_L3_DATA  |
	       GPIO_H3600_CLK_SET1 | GPIO_H3600_CLK_SET0 |
	       H3100_DIRECT_EGPIO;

	/* Older bootldrs put GPIO2-9 in alternate mode on the
	   assumption that they are used for video */
	GAFR &= ~H3100_DIRECT_EGPIO;

	H3100_EGPIO = h3100_egpio;
	ipaq_model_ops = h3100_model_ops;
}

MACHINE_START(H3100, "Compaq iPAQ H3100")
	.phys_io	= 0x80000000,
	.io_pg_offst	= ((0xf8000000) >> 18) & 0xfffc,
	.boot_params	= 0xc0000100,
	.map_io		= h3100_map_io,
	.init_irq	= sa1100_init_irq,
	.timer		= &sa1100_timer,
	.init_machine	= h3xxx_mach_init,
MACHINE_END

#endif /* CONFIG_SA1100_H3100 */

/************************* H3600 *************************/

#ifdef CONFIG_SA1100_H3600

#define H3600_EGPIO	(*(volatile unsigned int *)H3600_EGPIO_VIRT)
static unsigned int h3600_egpio = EGPIO_H3600_RS232_ON;

static void h3600_control_egpio(enum ipaq_egpio_type x, int setp)
{
	unsigned int egpio = 0;
	unsigned long flags;

	switch (x) {
	case IPAQ_EGPIO_LCD_POWER:
		egpio |= EGPIO_H3600_LCD_ON |
			 EGPIO_H3600_LCD_PCI |
			 EGPIO_H3600_LCD_5V_ON |
			 EGPIO_H3600_LVDD_ON;
		do_blank(setp);
		break;
	case IPAQ_EGPIO_LCD_ENABLE:
		break;
	case IPAQ_EGPIO_CODEC_NRESET:
		egpio |= EGPIO_H3600_CODEC_NRESET;
		break;
	case IPAQ_EGPIO_AUDIO_ON:
		egpio |= EGPIO_H3600_AUD_AMP_ON |
			 EGPIO_H3600_AUD_PWR_ON;
		break;
	case IPAQ_EGPIO_QMUTE:
		egpio |= EGPIO_H3600_QMUTE;
		break;
	case IPAQ_EGPIO_OPT_NVRAM_ON:
		egpio |= EGPIO_H3600_OPT_NVRAM_ON;
		break;
	case IPAQ_EGPIO_OPT_ON:
		egpio |= EGPIO_H3600_OPT_ON;
		break;
	case IPAQ_EGPIO_CARD_RESET:
		egpio |= EGPIO_H3600_CARD_RESET;
		break;
	case IPAQ_EGPIO_OPT_RESET:
		egpio |= EGPIO_H3600_OPT_RESET;
		break;
	case IPAQ_EGPIO_IR_ON:
		egpio |= EGPIO_H3600_IR_ON;
		break;
	case IPAQ_EGPIO_IR_FSEL:
		egpio |= EGPIO_H3600_IR_FSEL;
		break;
	case IPAQ_EGPIO_RS232_ON:
		egpio |= EGPIO_H3600_RS232_ON;
		break;
	case IPAQ_EGPIO_VPP_ON:
		egpio |= EGPIO_H3600_VPP_ON;
		break;
	}

	if (egpio) {
		local_irq_save(flags);
		if (setp)
			h3600_egpio |= egpio;
		else
			h3600_egpio &= ~egpio;
		H3600_EGPIO = h3600_egpio;
		local_irq_restore(flags);
	}
}

static unsigned long h3600_read_egpio(void)
{
	return h3600_egpio;
}

static int h3600_pm_callback(int req)
{
	if (ipaq_model_ops.pm_callback_aux)
		return ipaq_model_ops.pm_callback_aux(req);
	return 0;
}

static struct ipaq_model_ops h3600_model_ops __initdata = {
	.generic_name	= "3600",
	.control	= h3600_control_egpio,
	.read		= h3600_read_egpio,
	.pm_callback	= h3600_pm_callback
};

static void __init h3600_map_io(void)
{
	h3xxx_map_io();

	/* Initialize h3600-specific values here */

	GPCR = 0x0fffffff;	 /* All outputs are set low by default */
	GPDR = GPIO_H3600_COM_RTS  | GPIO_H3600_L3_CLOCK |
	       GPIO_H3600_L3_MODE  | GPIO_H3600_L3_DATA  |
	       GPIO_H3600_CLK_SET1 | GPIO_H3600_CLK_SET0 |
	       GPIO_LDD15 | GPIO_LDD14 | GPIO_LDD13 | GPIO_LDD12 |
	       GPIO_LDD11 | GPIO_LDD10 | GPIO_LDD9  | GPIO_LDD8;

	H3600_EGPIO = h3600_egpio;	   /* Maintains across sleep? */
	ipaq_model_ops = h3600_model_ops;
}

MACHINE_START(H3600, "Compaq iPAQ H3600")
	.phys_io	= 0x80000000,
	.io_pg_offst	= ((0xf8000000) >> 18) & 0xfffc,
	.boot_params	= 0xc0000100,
	.map_io		= h3600_map_io,
	.init_irq	= sa1100_init_irq,
	.timer		= &sa1100_timer,
	.init_machine	= h3xxx_mach_init,
MACHINE_END

#endif /* CONFIG_SA1100_H3600 */

#ifdef CONFIG_SA1100_H3800

#define SET_ASIC1(x) \
   do {if (setp) { H3800_ASIC1_GPIO_OUT |= (x); } else { H3800_ASIC1_GPIO_OUT &= ~(x); }} while(0)

#define SET_ASIC2(x) \
   do {if (setp) { H3800_ASIC2_GPIOPIOD |= (x); } else { H3800_ASIC2_GPIOPIOD &= ~(x); }} while(0)

#define CLEAR_ASIC1(x) \
   do {if (setp) { H3800_ASIC1_GPIO_OUT &= ~(x); } else { H3800_ASIC1_GPIO_OUT |= (x); }} while(0)

#define CLEAR_ASIC2(x) \
   do {if (setp) { H3800_ASIC2_GPIOPIOD &= ~(x); } else { H3800_ASIC2_GPIOPIOD |= (x); }} while(0)


/*
  On screen enable, we get

     h3800_video_power_on(1)
     LCD controller starts
     h3800_video_lcd_enable(1)

  On screen disable, we get

     h3800_video_lcd_enable(0)
     LCD controller stops
     h3800_video_power_on(0)
*/


static void h3800_video_power_on(int setp)
{
	if (setp) {
		H3800_ASIC1_GPIO_OUT |= GPIO1_LCD_ON;
		msleep(30);
		H3800_ASIC1_GPIO_OUT |= GPIO1_VGL_ON;
		msleep(5);
		H3800_ASIC1_GPIO_OUT |= GPIO1_VGH_ON;
		msleep(50);
		H3800_ASIC1_GPIO_OUT |= GPIO1_LCD_5V_ON;
		msleep(5);
	} else {
		msleep(5);
		H3800_ASIC1_GPIO_OUT &= ~GPIO1_LCD_5V_ON;
		msleep(50);
		H3800_ASIC1_GPIO_OUT &= ~GPIO1_VGL_ON;
		msleep(5);
		H3800_ASIC1_GPIO_OUT &= ~GPIO1_VGH_ON;
		msleep(100);
		H3800_ASIC1_GPIO_OUT &= ~GPIO1_LCD_ON;
	}
}

static void h3800_video_lcd_enable(int setp)
{
	if (setp) {
		msleep(17);	// Wait one from before turning on
		H3800_ASIC1_GPIO_OUT |= GPIO1_LCD_PCI;
	} else {
		H3800_ASIC1_GPIO_OUT &= ~GPIO1_LCD_PCI;
		msleep(30);	// Wait before turning off
	}
}


static void h3800_control_egpio(enum ipaq_egpio_type x, int setp)
{
	switch (x) {
	case IPAQ_EGPIO_LCD_POWER:
		h3800_video_power_on(setp);
		break;
	case IPAQ_EGPIO_LCD_ENABLE:
		h3800_video_lcd_enable(setp);
		break;
	case IPAQ_EGPIO_CODEC_NRESET:
	case IPAQ_EGPIO_AUDIO_ON:
	case IPAQ_EGPIO_QMUTE:
		printk("%s: error - should not be called\n", __FUNCTION__);
		break;
	case IPAQ_EGPIO_OPT_NVRAM_ON:
		SET_ASIC2(GPIO2_OPT_ON_NVRAM);
		break;
	case IPAQ_EGPIO_OPT_ON:
		SET_ASIC2(GPIO2_OPT_ON);
		break;
	case IPAQ_EGPIO_CARD_RESET:
		SET_ASIC2(GPIO2_OPT_PCM_RESET);
		break;
	case IPAQ_EGPIO_OPT_RESET:
		SET_ASIC2(GPIO2_OPT_RESET);
		break;
	case IPAQ_EGPIO_IR_ON:
		CLEAR_ASIC1(GPIO1_IR_ON_N);
		break;
	case IPAQ_EGPIO_IR_FSEL:
		break;
	case IPAQ_EGPIO_RS232_ON:
		SET_ASIC1(GPIO1_RS232_ON);
		break;
	case IPAQ_EGPIO_VPP_ON:
		H3800_ASIC2_FlashWP_VPP_ON = setp;
		break;
	}
}

static unsigned long h3800_read_egpio(void)
{
	return H3800_ASIC1_GPIO_OUT | (H3800_ASIC2_GPIOPIOD << 16);
}

/* We need to fix ASIC2 GPIO over suspend/resume.  At the moment,
   it doesn't appear that ASIC1 GPIO has the same problem */

static int h3800_pm_callback(int req)
{
	static u16 asic1_data;
	static u16 asic2_data;
	int result = 0;

	printk("%s %d\n", __FUNCTION__, req);

	switch (req) {
	case PM_RESUME:
		MSC2 = (MSC2 & 0x0000ffff) | 0xE4510000;  /* Set MSC2 correctly */

		H3800_ASIC2_GPIOPIOD = asic2_data;
		H3800_ASIC2_GPIODIR = GPIO2_PEN_IRQ
			| GPIO2_SD_DETECT
			| GPIO2_EAR_IN_N
			| GPIO2_USB_DETECT_N
			| GPIO2_SD_CON_SLT;

		H3800_ASIC1_GPIO_OUT = asic1_data;

		if (ipaq_model_ops.pm_callback_aux)
			result = ipaq_model_ops.pm_callback_aux(req);
		break;

	case PM_SUSPEND:
		if (ipaq_model_ops.pm_callback_aux &&
		     ((result = ipaq_model_ops.pm_callback_aux(req)) != 0))
			return result;

		asic1_data = H3800_ASIC1_GPIO_OUT;
		asic2_data = H3800_ASIC2_GPIOPIOD;
		break;
	default:
		printk("%s: unrecognized PM callback\n", __FUNCTION__);
		break;
	}
	return result;
}

static struct ipaq_model_ops h3800_model_ops __initdata = {
	.generic_name	= "3800",
	.control	= h3800_control_egpio,
	.read		= h3800_read_egpio,
	.pm_callback	= h3800_pm_callback
};

#define MAX_ASIC_ISR_LOOPS    20

/* The order of these is important - see #include <asm/arch/irqs.h> */
static u32 kpio_irq_mask[] = {
	KPIO_KEY_ALL,
	KPIO_SPI_INT,
	KPIO_OWM_INT,
	KPIO_ADC_INT,
	KPIO_UART_0_INT,
	KPIO_UART_1_INT,
	KPIO_TIMER_0_INT,
	KPIO_TIMER_1_INT,
	KPIO_TIMER_2_INT
};

static u32 gpio_irq_mask[] = {
	GPIO2_PEN_IRQ,
	GPIO2_SD_DETECT,
	GPIO2_EAR_IN_N,
	GPIO2_USB_DETECT_N,
	GPIO2_SD_CON_SLT,
};

static void h3800_IRQ_demux(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
{
	int i;

	if (0) printk("%s: interrupt received\n", __FUNCTION__);

	desc->chip->ack(irq);

	for (i = 0; i < MAX_ASIC_ISR_LOOPS && (GPLR & GPIO_H3800_ASIC); i++) {
		u32 irq;
		int j;

		/* KPIO */
		irq = H3800_ASIC2_KPIINTFLAG;
		if (0) printk("%s KPIO 0x%08X\n", __FUNCTION__, irq);
		for (j = 0; j < H3800_KPIO_IRQ_COUNT; j++)
			if (irq & kpio_irq_mask[j])
				do_edge_IRQ(H3800_KPIO_IRQ_COUNT + j, irq_desc + H3800_KPIO_IRQ_COUNT + j, regs);

		/* GPIO2 */
		irq = H3800_ASIC2_GPIINTFLAG;
		if (0) printk("%s GPIO 0x%08X\n", __FUNCTION__, irq);
		for (j = 0; j < H3800_GPIO_IRQ_COUNT; j++)
			if (irq & gpio_irq_mask[j])
				do_edge_IRQ(H3800_GPIO_IRQ_COUNT + j, irq_desc + H3800_GPIO_IRQ_COUNT + j , regs);
	}

	if (i >= MAX_ASIC_ISR_LOOPS)
		printk("%s: interrupt processing overrun\n", __FUNCTION__);

	/* For level-based interrupts */
	desc->chip->unmask(irq);

}

static struct irqaction h3800_irq = {
	.name		= "h3800_asic",
	.handler	= h3800_IRQ_demux,
	.flags		= SA_INTERRUPT | SA_TIMER,
};

u32 kpio_int_shadow = 0;


/* mask_ack <- IRQ is first serviced.
       mask <- IRQ is disabled.
     unmask <- IRQ is enabled

     The INTCLR registers are poorly documented.  I believe that writing
     a "1" to the register clears the specific interrupt, but the documentation
     indicates writing a "0" clears the interrupt.  In any case, they shouldn't
     be read (that's the INTFLAG register)
 */

static void h3800_mask_ack_kpio_irq(unsigned int irq)
{
	u32 mask = kpio_irq_mask[irq - H3800_KPIO_IRQ_START];
	kpio_int_shadow &= ~mask;
	H3800_ASIC2_KPIINTSTAT = kpio_int_shadow;
	H3800_ASIC2_KPIINTCLR  = mask;
}

static void h3800_mask_kpio_irq(unsigned int irq)
{
	u32 mask = kpio_irq_mask[irq - H3800_KPIO_IRQ_START];
	kpio_int_shadow &= ~mask;
	H3800_ASIC2_KPIINTSTAT = kpio_int_shadow;
}

static void h3800_unmask_kpio_irq(unsigned int irq)
{
	u32 mask = kpio_irq_mask[irq - H3800_KPIO_IRQ_START];
	kpio_int_shadow |= mask;
	H3800_ASIC2_KPIINTSTAT = kpio_int_shadow;
}

static void h3800_mask_ack_gpio_irq(unsigned int irq)
{
	u32 mask = gpio_irq_mask[irq - H3800_GPIO_IRQ_START];
	H3800_ASIC2_GPIINTSTAT &= ~mask;
	H3800_ASIC2_GPIINTCLR	= mask;
}

static void h3800_mask_gpio_irq(unsigned int irq)
{
	u32 mask = gpio_irq_mask[irq - H3800_GPIO_IRQ_START];
	H3800_ASIC2_GPIINTSTAT &= ~mask;
	}

static void h3800_unmask_gpio_irq(unsigned int irq)
{
	u32 mask = gpio_irq_mask[irq - H3800_GPIO_IRQ_START];
	H3800_ASIC2_GPIINTSTAT |= mask;
}

static void __init h3800_init_irq(void)
{
	int i;

	/* Initialize standard IRQs */
	sa1100_init_irq();

	/* Disable all IRQs and set up clock */
	H3800_ASIC2_KPIINTSTAT	   =  0;     /* Disable all interrupts */
	H3800_ASIC2_GPIINTSTAT	   =  0;

	H3800_ASIC2_KPIINTCLR	   =  0;     /* Clear all KPIO interrupts */
	H3800_ASIC2_GPIINTCLR	   =  0;     /* Clear all GPIO interrupts */

//	H3800_ASIC2_KPIINTCLR	   =  0xffff;	  /* Clear all KPIO interrupts */
//	H3800_ASIC2_GPIINTCLR	   =  0xffff;	  /* Clear all GPIO interrupts */

	H3800_ASIC2_CLOCK_Enable       |= ASIC2_CLOCK_EX0;   /* 32 kHZ crystal on */
	H3800_ASIC2_INTR_ClockPrescale |= ASIC2_INTCPS_SET;
	H3800_ASIC2_INTR_ClockPrescale	= ASIC2_INTCPS_CPS(0x0e) | ASIC2_INTCPS_SET;
	H3800_ASIC2_INTR_TimerSet	= 1;

#if 0
	for (i = 0; i < H3800_KPIO_IRQ_COUNT; i++) {
		int irq = i + H3800_KPIO_IRQ_START;
		irq_desc[irq].valid    = 1;
		irq_desc[irq].probe_ok = 1;
		set_irq_chip(irq, &h3800_kpio_irqchip);
	}

	for (i = 0; i < H3800_GPIO_IRQ_COUNT; i++) {
		int irq = i + H3800_GPIO_IRQ_START;
		irq_desc[irq].valid    = 1;
		irq_desc[irq].probe_ok = 1;
		set_irq_chip(irq, &h3800_gpio_irqchip);
	}
#endif
	set_irq_type(IRQ_GPIO_H3800_ASIC, IRQT_RISING);
	set_irq_chained_handler(IRQ_GPIO_H3800_ASIC, &h3800_IRQ_demux);
}


#define ASIC1_OUTPUTS	 0x7fff   /* First 15 bits are used */

static void __init h3800_map_io(void)
{
	h3xxx_map_io();

	/* Add wakeup on AC plug/unplug */
	PWER  |= PWER_GPIO12;

	/* Initialize h3800-specific values here */
	GPCR = 0x0fffffff;	 /* All outputs are set low by default */
	GAFR =	GPIO_H3800_CLK_OUT |
		GPIO_LDD15 | GPIO_LDD14 | GPIO_LDD13 | GPIO_LDD12 |
		GPIO_LDD11 | GPIO_LDD10 | GPIO_LDD9  | GPIO_LDD8;
	GPDR =	GPIO_H3800_CLK_OUT |
		GPIO_H3600_COM_RTS  | GPIO_H3600_L3_CLOCK |
		GPIO_H3600_L3_MODE  | GPIO_H3600_L3_DATA  |
		GPIO_LDD15 | GPIO_LDD14 | GPIO_LDD13 | GPIO_LDD12 |
		GPIO_LDD11 | GPIO_LDD10 | GPIO_LDD9  | GPIO_LDD8;
	TUCR =	TUCR_3_6864MHz;   /* Seems to be used only for the Bluetooth UART */

	/* Fix the memory bus */
	MSC2 = (MSC2 & 0x0000ffff) | 0xE4510000;

	/* Set up ASIC #1 */
	H3800_ASIC1_GPIO_DIR		= ASIC1_OUTPUTS;	    /* All outputs */
	H3800_ASIC1_GPIO_MASK		= ASIC1_OUTPUTS;	    /* No interrupts */
	H3800_ASIC1_GPIO_SLEEP_MASK	= ASIC1_OUTPUTS;
	H3800_ASIC1_GPIO_SLEEP_DIR	= ASIC1_OUTPUTS;
	H3800_ASIC1_GPIO_SLEEP_OUT	= GPIO1_EAR_ON_N;
	H3800_ASIC1_GPIO_BATT_FAULT_DIR = ASIC1_OUTPUTS;
	H3800_ASIC1_GPIO_BATT_FAULT_OUT = GPIO1_EAR_ON_N;

	H3800_ASIC1_GPIO_OUT = GPIO1_IR_ON_N
				      | GPIO1_RS232_ON
				      | GPIO1_EAR_ON_N;

	/* Set up ASIC #2 */
	H3800_ASIC2_GPIOPIOD	= GPIO2_IN_Y1_N | GPIO2_IN_X1_N;
	H3800_ASIC2_GPOBFSTAT	= GPIO2_IN_Y1_N | GPIO2_IN_X1_N;

	H3800_ASIC2_GPIODIR	= GPIO2_PEN_IRQ
				      | GPIO2_SD_DETECT
				      | GPIO2_EAR_IN_N
				      | GPIO2_USB_DETECT_N
				      | GPIO2_SD_CON_SLT;

	/* TODO : Set sleep states & battery fault states */

	/* Clear VPP Enable */
	H3800_ASIC2_FlashWP_VPP_ON = 0;
	ipaq_model_ops = h3800_model_ops;
}

MACHINE_START(H3800, "Compaq iPAQ H3800")
	.phys_io	= 0x80000000,
	.io_pg_offst	= ((0xf8000000) >> 18) & 0xfffc,
	.boot_params	= 0xc0000100,
	.map_io		= h3800_map_io,
	.init_irq	= h3800_init_irq,
	.timer		= &sa1100_timer,
	.init_machine	= h3xxx_mach_init,
MACHINE_END

#endif /* CONFIG_SA1100_H3800 */