summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-pxa/zeus.c
blob: b19d1c361cab51c2689a9f494c83bf2e79a7f813 (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
/*
 *  Support for the Arcom ZEUS.
 *
 *  Copyright (C) 2006 Arcom Control Systems Ltd.
 *
 *  Loosely based on Arcom's 2.6.16.28.
 *  Maintained by Marc Zyngier <maz@misterjones.org>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 2 as
 *  published by the Free Software Foundation.
 */

#include <linux/cpufreq.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/pm.h>
#include <linux/gpio.h>
#include <linux/serial_8250.h>
#include <linux/dm9000.h>
#include <linux/mmc/host.h>
#include <linux/spi/spi.h>
#include <linux/spi/pxa2xx_spi.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/i2c.h>
#include <linux/i2c/pxa-i2c.h>
#include <linux/platform_data/pca953x.h>
#include <linux/apm-emulation.h>
#include <linux/can/platform/mcp251x.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>

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

#include <mach/pxa27x.h>
#include <mach/regs-uart.h>
#include <linux/platform_data/usb-ohci-pxa27x.h>
#include <linux/platform_data/mmc-pxamci.h>
#include <mach/pxa27x-udc.h>
#include <mach/udc.h>
#include <linux/platform_data/video-pxafb.h>
#include <mach/pm.h>
#include <mach/audio.h>
#include <linux/platform_data/pcmcia-pxa2xx_viper.h>
#include <mach/zeus.h>
#include <mach/smemc.h>

#include "generic.h"

/*
 * Interrupt handling
 */

static unsigned long zeus_irq_enabled_mask;
static const int zeus_isa_irqs[] = { 3, 4, 5, 6, 7, 10, 11, 12, };
static const int zeus_isa_irq_map[] = {
	0,		/* ISA irq #0, invalid */
	0,		/* ISA irq #1, invalid */
	0,		/* ISA irq #2, invalid */
	1 << 0,		/* ISA irq #3 */
	1 << 1,		/* ISA irq #4 */
	1 << 2,		/* ISA irq #5 */
	1 << 3,		/* ISA irq #6 */
	1 << 4,		/* ISA irq #7 */
	0,		/* ISA irq #8, invalid */
	0,		/* ISA irq #9, invalid */
	1 << 5,		/* ISA irq #10 */
	1 << 6,		/* ISA irq #11 */
	1 << 7,		/* ISA irq #12 */
};

static inline int zeus_irq_to_bitmask(unsigned int irq)
{
	return zeus_isa_irq_map[irq - PXA_ISA_IRQ(0)];
}

static inline int zeus_bit_to_irq(int bit)
{
	return zeus_isa_irqs[bit] + PXA_ISA_IRQ(0);
}

static void zeus_ack_irq(struct irq_data *d)
{
	__raw_writew(zeus_irq_to_bitmask(d->irq), ZEUS_CPLD_ISA_IRQ);
}

static void zeus_mask_irq(struct irq_data *d)
{
	zeus_irq_enabled_mask &= ~(zeus_irq_to_bitmask(d->irq));
}

static void zeus_unmask_irq(struct irq_data *d)
{
	zeus_irq_enabled_mask |= zeus_irq_to_bitmask(d->irq);
}

static inline unsigned long zeus_irq_pending(void)
{
	return __raw_readw(ZEUS_CPLD_ISA_IRQ) & zeus_irq_enabled_mask;
}

static void zeus_irq_handler(unsigned int irq, struct irq_desc *desc)
{
	unsigned long pending;

	pending = zeus_irq_pending();
	do {
		/* we're in a chained irq handler,
		 * so ack the interrupt by hand */
		desc->irq_data.chip->irq_ack(&desc->irq_data);

		if (likely(pending)) {
			irq = zeus_bit_to_irq(__ffs(pending));
			generic_handle_irq(irq);
		}
		pending = zeus_irq_pending();
	} while (pending);
}

static struct irq_chip zeus_irq_chip = {
	.name		= "ISA",
	.irq_ack	= zeus_ack_irq,
	.irq_mask	= zeus_mask_irq,
	.irq_unmask	= zeus_unmask_irq,
};

static void __init zeus_init_irq(void)
{
	int level;
	int isa_irq;

	pxa27x_init_irq();

	/* Peripheral IRQs. It would be nice to move those inside driver
	   configuration, but it is not supported at the moment. */
	irq_set_irq_type(gpio_to_irq(ZEUS_AC97_GPIO), IRQ_TYPE_EDGE_RISING);
	irq_set_irq_type(gpio_to_irq(ZEUS_WAKEUP_GPIO), IRQ_TYPE_EDGE_RISING);
	irq_set_irq_type(gpio_to_irq(ZEUS_PTT_GPIO), IRQ_TYPE_EDGE_RISING);
	irq_set_irq_type(gpio_to_irq(ZEUS_EXTGPIO_GPIO),
			 IRQ_TYPE_EDGE_FALLING);
	irq_set_irq_type(gpio_to_irq(ZEUS_CAN_GPIO), IRQ_TYPE_EDGE_FALLING);

	/* Setup ISA IRQs */
	for (level = 0; level < ARRAY_SIZE(zeus_isa_irqs); level++) {
		isa_irq = zeus_bit_to_irq(level);
		irq_set_chip_and_handler(isa_irq, &zeus_irq_chip,
					 handle_edge_irq);
		set_irq_flags(isa_irq, IRQF_VALID | IRQF_PROBE);
	}

	irq_set_irq_type(gpio_to_irq(ZEUS_ISA_GPIO), IRQ_TYPE_EDGE_RISING);
	irq_set_chained_handler(gpio_to_irq(ZEUS_ISA_GPIO), zeus_irq_handler);
}


/*
 * Platform devices
 */

/* Flash */
static struct resource zeus_mtd_resources[] = {
	[0] = { /* NOR Flash (up to 64MB) */
		.start	= ZEUS_FLASH_PHYS,
		.end	= ZEUS_FLASH_PHYS + SZ_64M - 1,
		.flags	= IORESOURCE_MEM,
	},
	[1] = { /* SRAM */
		.start	= ZEUS_SRAM_PHYS,
		.end	= ZEUS_SRAM_PHYS + SZ_512K - 1,
		.flags	= IORESOURCE_MEM,
	},
};

static struct physmap_flash_data zeus_flash_data[] = {
	[0] = {
		.width		= 2,
		.parts		= NULL,
		.nr_parts	= 0,
	},
};

static struct platform_device zeus_mtd_devices[] = {
	[0] = {
		.name		= "physmap-flash",
		.id		= 0,
		.dev		= {
			.platform_data = &zeus_flash_data[0],
		},
		.resource	= &zeus_mtd_resources[0],
		.num_resources	= 1,
	},
};

/* Serial */
static struct resource zeus_serial_resources[] = {
	{
		.start	= 0x10000000,
		.end	= 0x1000000f,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= 0x10800000,
		.end	= 0x1080000f,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= 0x11000000,
		.end	= 0x1100000f,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= 0x40100000,
		.end	= 0x4010001f,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= 0x40200000,
		.end	= 0x4020001f,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= 0x40700000,
		.end	= 0x4070001f,
		.flags	= IORESOURCE_MEM,
	},
};

static struct plat_serial8250_port serial_platform_data[] = {
	/* External UARTs */
	/* FIXME: Shared IRQs on COM1-COM4 will not work properly on v1i1 hardware. */
	{ /* COM1 */
		.mapbase	= 0x10000000,
		.irq		= PXA_GPIO_TO_IRQ(ZEUS_UARTA_GPIO),
		.irqflags	= IRQF_TRIGGER_RISING,
		.uartclk	= 14745600,
		.regshift	= 1,
		.flags		= UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
		.iotype		= UPIO_MEM,
	},
	{ /* COM2 */
		.mapbase	= 0x10800000,
		.irq		= PXA_GPIO_TO_IRQ(ZEUS_UARTB_GPIO),
		.irqflags	= IRQF_TRIGGER_RISING,
		.uartclk	= 14745600,
		.regshift	= 1,
		.flags		= UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
		.iotype		= UPIO_MEM,
	},
	{ /* COM3 */
		.mapbase	= 0x11000000,
		.irq		= PXA_GPIO_TO_IRQ(ZEUS_UARTC_GPIO),
		.irqflags	= IRQF_TRIGGER_RISING,
		.uartclk	= 14745600,
		.regshift	= 1,
		.flags		= UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
		.iotype		= UPIO_MEM,
	},
	{ /* COM4 */
		.mapbase	= 0x11800000,
		.irq		= PXA_GPIO_TO_IRQ(ZEUS_UARTD_GPIO),
		.irqflags	= IRQF_TRIGGER_RISING,
		.uartclk	= 14745600,
		.regshift	= 1,
		.flags		= UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
		.iotype		= UPIO_MEM,
	},
	/* Internal UARTs */
	{ /* FFUART */
		.membase	= (void *)&FFUART,
		.mapbase	= __PREG(FFUART),
		.irq		= IRQ_FFUART,
		.uartclk	= 921600 * 16,
		.regshift	= 2,
		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
		.iotype		= UPIO_MEM,
	},
	{ /* BTUART */
		.membase	= (void *)&BTUART,
		.mapbase	= __PREG(BTUART),
		.irq		= IRQ_BTUART,
		.uartclk	= 921600 * 16,
		.regshift	= 2,
		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
		.iotype		= UPIO_MEM,
	},
	{ /* STUART */
		.membase	= (void *)&STUART,
		.mapbase	= __PREG(STUART),
		.irq		= IRQ_STUART,
		.uartclk	= 921600 * 16,
		.regshift	= 2,
		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
		.iotype		= UPIO_MEM,
	},
	{ },
};

static struct platform_device zeus_serial_device = {
	.name = "serial8250",
	.id   = PLAT8250_DEV_PLATFORM,
	.dev  = {
		.platform_data = serial_platform_data,
	},
	.num_resources	= ARRAY_SIZE(zeus_serial_resources),
	.resource	= zeus_serial_resources,
};

/* Ethernet */
static struct resource zeus_dm9k0_resource[] = {
	[0] = {
		.start = ZEUS_ETH0_PHYS,
		.end   = ZEUS_ETH0_PHYS + 1,
		.flags = IORESOURCE_MEM
	},
	[1] = {
		.start = ZEUS_ETH0_PHYS + 2,
		.end   = ZEUS_ETH0_PHYS + 3,
		.flags = IORESOURCE_MEM
	},
	[2] = {
		.start = PXA_GPIO_TO_IRQ(ZEUS_ETH0_GPIO),
		.end   = PXA_GPIO_TO_IRQ(ZEUS_ETH0_GPIO),
		.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
	},
};

static struct resource zeus_dm9k1_resource[] = {
	[0] = {
		.start = ZEUS_ETH1_PHYS,
		.end   = ZEUS_ETH1_PHYS + 1,
		.flags = IORESOURCE_MEM
	},
	[1] = {
		.start = ZEUS_ETH1_PHYS + 2,
		.end   = ZEUS_ETH1_PHYS + 3,
		.flags = IORESOURCE_MEM,
	},
	[2] = {
		.start = PXA_GPIO_TO_IRQ(ZEUS_ETH1_GPIO),
		.end   = PXA_GPIO_TO_IRQ(ZEUS_ETH1_GPIO),
		.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
	},
};

static struct dm9000_plat_data zeus_dm9k_platdata = {
	.flags		= DM9000_PLATF_16BITONLY,
};

static struct platform_device zeus_dm9k0_device = {
	.name		= "dm9000",
	.id		= 0,
	.num_resources	= ARRAY_SIZE(zeus_dm9k0_resource),
	.resource	= zeus_dm9k0_resource,
	.dev		= {
		.platform_data = &zeus_dm9k_platdata,
	}
};

static struct platform_device zeus_dm9k1_device = {
	.name		= "dm9000",
	.id		= 1,
	.num_resources	= ARRAY_SIZE(zeus_dm9k1_resource),
	.resource	= zeus_dm9k1_resource,
	.dev		= {
		.platform_data = &zeus_dm9k_platdata,
	}
};

/* External SRAM */
static struct resource zeus_sram_resource = {
	.start		= ZEUS_SRAM_PHYS,
	.end		= ZEUS_SRAM_PHYS + ZEUS_SRAM_SIZE * 2 - 1,
	.flags		= IORESOURCE_MEM,
};

static struct platform_device zeus_sram_device = {
	.name		= "pxa2xx-8bit-sram",
	.id		= 0,
	.num_resources	= 1,
	.resource	= &zeus_sram_resource,
};

/* SPI interface on SSP3 */
static struct pxa2xx_spi_master pxa2xx_spi_ssp3_master_info = {
	.num_chipselect = 1,
	.enable_dma     = 1,
};

/* CAN bus on SPI */
static struct regulator_consumer_supply can_regulator_consumer =
	REGULATOR_SUPPLY("vdd", "spi3.0");

static struct regulator_init_data can_regulator_init_data = {
	.constraints	= {
		.valid_ops_mask	= REGULATOR_CHANGE_STATUS,
	},
	.consumer_supplies	= &can_regulator_consumer,
	.num_consumer_supplies	= 1,
};

static struct fixed_voltage_config can_regulator_pdata = {
	.supply_name	= "CAN_SHDN",
	.microvolts	= 3300000,
	.gpio		= ZEUS_CAN_SHDN_GPIO,
	.init_data	= &can_regulator_init_data,
};

static struct platform_device can_regulator_device = {
	.name	= "reg-fixed-volage",
	.id	= -1,
	.dev	= {
		.platform_data	= &can_regulator_pdata,
	},
};

static struct mcp251x_platform_data zeus_mcp2515_pdata = {
	.oscillator_frequency	= 16*1000*1000,
};

static struct spi_board_info zeus_spi_board_info[] = {
	[0] = {
		.modalias	= "mcp2515",
		.platform_data	= &zeus_mcp2515_pdata,
		.irq		= PXA_GPIO_TO_IRQ(ZEUS_CAN_GPIO),
		.max_speed_hz	= 1*1000*1000,
		.bus_num	= 3,
		.mode		= SPI_MODE_0,
		.chip_select	= 0,
	},
};

/* Leds */
static struct gpio_led zeus_leds[] = {
	[0] = {
		.name		 = "zeus:yellow:1",
		.default_trigger = "heartbeat",
		.gpio		 = ZEUS_EXT0_GPIO(3),
		.active_low	 = 1,
	},
	[1] = {
		.name		 = "zeus:yellow:2",
		.default_trigger = "default-on",
		.gpio		 = ZEUS_EXT0_GPIO(4),
		.active_low	 = 1,
	},
	[2] = {
		.name		 = "zeus:yellow:3",
		.default_trigger = "default-on",
		.gpio		 = ZEUS_EXT0_GPIO(5),
		.active_low	 = 1,
	},
};

static struct gpio_led_platform_data zeus_leds_info = {
	.leds		= zeus_leds,
	.num_leds	= ARRAY_SIZE(zeus_leds),
};

static struct platform_device zeus_leds_device = {
	.name		= "leds-gpio",
	.id		= -1,
	.dev		= {
		.platform_data	= &zeus_leds_info,
	},
};

static void zeus_cf_reset(int state)
{
	u16 cpld_state = __raw_readw(ZEUS_CPLD_CONTROL);

	if (state)
		cpld_state |= ZEUS_CPLD_CONTROL_CF_RST;
	else
		cpld_state &= ~ZEUS_CPLD_CONTROL_CF_RST;

	__raw_writew(cpld_state, ZEUS_CPLD_CONTROL);
}

static struct arcom_pcmcia_pdata zeus_pcmcia_info = {
	.cd_gpio	= ZEUS_CF_CD_GPIO,
	.rdy_gpio	= ZEUS_CF_RDY_GPIO,
	.pwr_gpio	= ZEUS_CF_PWEN_GPIO,
	.reset		= zeus_cf_reset,
};

static struct platform_device zeus_pcmcia_device = {
	.name		= "zeus-pcmcia",
	.id		= -1,
	.dev		= {
		.platform_data	= &zeus_pcmcia_info,
	},
};

static struct resource zeus_max6369_resource = {
	.start		= ZEUS_CPLD_EXTWDOG_PHYS,
	.end		= ZEUS_CPLD_EXTWDOG_PHYS,
	.flags		= IORESOURCE_MEM,
};

struct platform_device zeus_max6369_device = {
	.name		= "max6369_wdt",
	.id		= -1,
	.resource	= &zeus_max6369_resource,
	.num_resources	= 1,
};

static struct platform_device *zeus_devices[] __initdata = {
	&zeus_serial_device,
	&zeus_mtd_devices[0],
	&zeus_dm9k0_device,
	&zeus_dm9k1_device,
	&zeus_sram_device,
	&zeus_leds_device,
	&zeus_pcmcia_device,
	&zeus_max6369_device,
	&can_regulator_device,
};

/* AC'97 */
static pxa2xx_audio_ops_t zeus_ac97_info = {
	.reset_gpio = 95,
};


/*
 * USB host
 */

static int zeus_ohci_init(struct device *dev)
{
	int err;

	/* Switch on port 2. */
	if ((err = gpio_request(ZEUS_USB2_PWREN_GPIO, "USB2_PWREN"))) {
		dev_err(dev, "Can't request USB2_PWREN\n");
		return err;
	}

	if ((err = gpio_direction_output(ZEUS_USB2_PWREN_GPIO, 1))) {
		gpio_free(ZEUS_USB2_PWREN_GPIO);
		dev_err(dev, "Can't enable USB2_PWREN\n");
		return err;
	}

	/* Port 2 is shared between host and client interface. */
	UP2OCR = UP2OCR_HXOE | UP2OCR_HXS | UP2OCR_DMPDE | UP2OCR_DPPDE;

	return 0;
}

static void zeus_ohci_exit(struct device *dev)
{
	/* Power-off port 2 */
	gpio_direction_output(ZEUS_USB2_PWREN_GPIO, 0);
	gpio_free(ZEUS_USB2_PWREN_GPIO);
}

static struct pxaohci_platform_data zeus_ohci_platform_data = {
	.port_mode	= PMM_NPS_MODE,
	/* Clear Power Control Polarity Low and set Power Sense
	 * Polarity Low. Supply power to USB ports. */
	.flags		= ENABLE_PORT_ALL | POWER_SENSE_LOW,
	.init		= zeus_ohci_init,
	.exit		= zeus_ohci_exit,
};

/*
 * Flat Panel
 */

static void zeus_lcd_power(int on, struct fb_var_screeninfo *si)
{
	gpio_set_value(ZEUS_LCD_EN_GPIO, on);
}

static void zeus_backlight_power(int on)
{
	gpio_set_value(ZEUS_BKLEN_GPIO, on);
}

static int zeus_setup_fb_gpios(void)
{
	int err;

	if ((err = gpio_request(ZEUS_LCD_EN_GPIO, "LCD_EN")))
		goto out_err;

	if ((err = gpio_direction_output(ZEUS_LCD_EN_GPIO, 0)))
		goto out_err_lcd;

	if ((err = gpio_request(ZEUS_BKLEN_GPIO, "BKLEN")))
		goto out_err_lcd;

	if ((err = gpio_direction_output(ZEUS_BKLEN_GPIO, 0)))
		goto out_err_bkl;

	return 0;

out_err_bkl:
	gpio_free(ZEUS_BKLEN_GPIO);
out_err_lcd:
	gpio_free(ZEUS_LCD_EN_GPIO);
out_err:
	return err;
}

static struct pxafb_mode_info zeus_fb_mode_info[] = {
	{
		.pixclock       = 39722,

		.xres           = 640,
		.yres           = 480,

		.bpp            = 16,

		.hsync_len      = 63,
		.left_margin    = 16,
		.right_margin   = 81,

		.vsync_len      = 2,
		.upper_margin   = 12,
		.lower_margin   = 31,

		.sync		= 0,
	},
};

static struct pxafb_mach_info zeus_fb_info = {
	.modes			= zeus_fb_mode_info,
	.num_modes		= 1,
	.lcd_conn		= LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
	.pxafb_lcd_power	= zeus_lcd_power,
	.pxafb_backlight_power	= zeus_backlight_power,
};

/*
 * MMC/SD Device
 *
 * The card detect interrupt isn't debounced so we delay it by 250ms
 * to give the card a chance to fully insert/eject.
 */

static struct pxamci_platform_data zeus_mci_platform_data = {
	.ocr_mask		= MMC_VDD_32_33|MMC_VDD_33_34,
	.detect_delay_ms	= 250,
	.gpio_card_detect       = ZEUS_MMC_CD_GPIO,
	.gpio_card_ro           = ZEUS_MMC_WP_GPIO,
	.gpio_card_ro_invert	= 1,
	.gpio_power             = -1
};

/*
 * USB Device Controller
 */
static void zeus_udc_command(int cmd)
{
	switch (cmd) {
	case PXA2XX_UDC_CMD_DISCONNECT:
		pr_info("zeus: disconnecting USB client\n");
		UP2OCR = UP2OCR_HXOE | UP2OCR_HXS | UP2OCR_DMPDE | UP2OCR_DPPDE;
		break;

	case PXA2XX_UDC_CMD_CONNECT:
		pr_info("zeus: connecting USB client\n");
		UP2OCR = UP2OCR_HXOE | UP2OCR_DPPUE;
		break;
	}
}

static struct pxa2xx_udc_mach_info zeus_udc_info = {
	.udc_command = zeus_udc_command,
};

#ifdef CONFIG_PM
static void zeus_power_off(void)
{
	local_irq_disable();
	cpu_suspend(PWRMODE_DEEPSLEEP, pxa27x_finish_suspend);
}
#else
#define zeus_power_off   NULL
#endif

#ifdef CONFIG_APM_EMULATION
static void zeus_get_power_status(struct apm_power_info *info)
{
	/* Power supply is always present */
	info->ac_line_status	= APM_AC_ONLINE;
	info->battery_status	= APM_BATTERY_STATUS_NOT_PRESENT;
	info->battery_flag	= APM_BATTERY_FLAG_NOT_PRESENT;
}

static inline void zeus_setup_apm(void)
{
	apm_get_power_status = zeus_get_power_status;
}
#else
static inline void zeus_setup_apm(void)
{
}
#endif

static int zeus_get_pcb_info(struct i2c_client *client, unsigned gpio,
			     unsigned ngpio, void *context)
{
	int i;
	u8 pcb_info = 0;

	for (i = 0; i < 8; i++) {
		int pcb_bit = gpio + i + 8;

		if (gpio_request(pcb_bit, "pcb info")) {
			dev_err(&client->dev, "Can't request pcb info %d\n", i);
			continue;
		}

		if (gpio_direction_input(pcb_bit)) {
			dev_err(&client->dev, "Can't read pcb info %d\n", i);
			gpio_free(pcb_bit);
			continue;
		}

		pcb_info |= !!gpio_get_value(pcb_bit) << i;

		gpio_free(pcb_bit);
	}

	dev_info(&client->dev, "Zeus PCB version %d issue %d\n",
		 pcb_info >> 4, pcb_info & 0xf);

	return 0;
}

static struct pca953x_platform_data zeus_pca953x_pdata[] = {
	[0] = { .gpio_base	= ZEUS_EXT0_GPIO_BASE, },
	[1] = {
		.gpio_base	= ZEUS_EXT1_GPIO_BASE,
		.setup		= zeus_get_pcb_info,
	},
	[2] = { .gpio_base = ZEUS_USER_GPIO_BASE, },
};

static struct i2c_board_info __initdata zeus_i2c_devices[] = {
	{
		I2C_BOARD_INFO("pca9535",	0x21),
		.platform_data	= &zeus_pca953x_pdata[0],
	},
	{
		I2C_BOARD_INFO("pca9535",	0x22),
		.platform_data	= &zeus_pca953x_pdata[1],
	},
	{
		I2C_BOARD_INFO("pca9535",	0x20),
		.platform_data	= &zeus_pca953x_pdata[2],
		.irq		= PXA_GPIO_TO_IRQ(ZEUS_EXTGPIO_GPIO),
	},
	{ I2C_BOARD_INFO("lm75a",	0x48) },
	{ I2C_BOARD_INFO("24c01",	0x50) },
	{ I2C_BOARD_INFO("isl1208",	0x6f) },
};

static mfp_cfg_t zeus_pin_config[] __initdata = {
	/* AC97 */
	GPIO28_AC97_BITCLK,
	GPIO29_AC97_SDATA_IN_0,
	GPIO30_AC97_SDATA_OUT,
	GPIO31_AC97_SYNC,

	GPIO15_nCS_1,
	GPIO78_nCS_2,
	GPIO80_nCS_4,
	GPIO33_nCS_5,

	GPIO22_GPIO,
	GPIO32_MMC_CLK,
	GPIO92_MMC_DAT_0,
	GPIO109_MMC_DAT_1,
	GPIO110_MMC_DAT_2,
	GPIO111_MMC_DAT_3,
	GPIO112_MMC_CMD,

	GPIO88_USBH1_PWR,
	GPIO89_USBH1_PEN,
	GPIO119_USBH2_PWR,
	GPIO120_USBH2_PEN,

	GPIO86_LCD_LDD_16,
	GPIO87_LCD_LDD_17,

	GPIO102_GPIO,
	GPIO104_CIF_DD_2,
	GPIO105_CIF_DD_1,

	GPIO81_SSP3_TXD,
	GPIO82_SSP3_RXD,
	GPIO83_SSP3_SFRM,
	GPIO84_SSP3_SCLK,

	GPIO48_nPOE,
	GPIO49_nPWE,
	GPIO50_nPIOR,
	GPIO51_nPIOW,
	GPIO85_nPCE_1,
	GPIO54_nPCE_2,
	GPIO79_PSKTSEL,
	GPIO55_nPREG,
	GPIO56_nPWAIT,
	GPIO57_nIOIS16,
	GPIO36_GPIO,		/* CF CD */
	GPIO97_GPIO,		/* CF PWREN */
	GPIO99_GPIO,		/* CF RDY */
};

/*
 * DM9k MSCx settings:	SRAM, 16 bits
 *			17 cycles delay first access
 *			 5 cycles delay next access
 *			13 cycles recovery time
 *			faster device
 */
#define DM9K_MSC_VALUE		0xe4c9

static void __init zeus_init(void)
{
	u16 dm9000_msc = DM9K_MSC_VALUE;
	u32 msc0, msc1;

	system_rev = __raw_readw(ZEUS_CPLD_VERSION);
	pr_info("Zeus CPLD V%dI%d\n", (system_rev & 0xf0) >> 4, (system_rev & 0x0f));

	/* Fix timings for dm9000s (CS1/CS2)*/
	msc0 = (__raw_readl(MSC0) & 0x0000ffff) | (dm9000_msc << 16);
	msc1 = (__raw_readl(MSC1) & 0xffff0000) | dm9000_msc;
	__raw_writel(msc0, MSC0);
	__raw_writel(msc1, MSC1);

	pm_power_off = zeus_power_off;
	zeus_setup_apm();

	pxa2xx_mfp_config(ARRAY_AND_SIZE(zeus_pin_config));

	platform_add_devices(zeus_devices, ARRAY_SIZE(zeus_devices));

	pxa_set_ohci_info(&zeus_ohci_platform_data);

	if (zeus_setup_fb_gpios())
		pr_err("Failed to setup fb gpios\n");
	else
		pxa_set_fb_info(NULL, &zeus_fb_info);

	pxa_set_mci_info(&zeus_mci_platform_data);
	pxa_set_udc_info(&zeus_udc_info);
	pxa_set_ac97_info(&zeus_ac97_info);
	pxa_set_i2c_info(NULL);
	i2c_register_board_info(0, ARRAY_AND_SIZE(zeus_i2c_devices));
	pxa2xx_set_spi_info(3, &pxa2xx_spi_ssp3_master_info);
	spi_register_board_info(zeus_spi_board_info, ARRAY_SIZE(zeus_spi_board_info));
}

static struct map_desc zeus_io_desc[] __initdata = {
	{
		.virtual = (unsigned long)ZEUS_CPLD_VERSION,
		.pfn     = __phys_to_pfn(ZEUS_CPLD_VERSION_PHYS),
		.length  = 0x1000,
		.type    = MT_DEVICE,
	},
	{
		.virtual = (unsigned long)ZEUS_CPLD_ISA_IRQ,
		.pfn     = __phys_to_pfn(ZEUS_CPLD_ISA_IRQ_PHYS),
		.length  = 0x1000,
		.type    = MT_DEVICE,
	},
	{
		.virtual = (unsigned long)ZEUS_CPLD_CONTROL,
		.pfn     = __phys_to_pfn(ZEUS_CPLD_CONTROL_PHYS),
		.length  = 0x1000,
		.type    = MT_DEVICE,
	},
	{
		.virtual = (unsigned long)ZEUS_PC104IO,
		.pfn     = __phys_to_pfn(ZEUS_PC104IO_PHYS),
		.length  = 0x00800000,
		.type    = MT_DEVICE,
	},
};

static void __init zeus_map_io(void)
{
	pxa27x_map_io();

	iotable_init(zeus_io_desc, ARRAY_SIZE(zeus_io_desc));

	/* Clear PSPR to ensure a full restart on wake-up. */
	PMCR = PSPR = 0;

	/* enable internal 32.768Khz oscillator (ignore OSCC_OOK) */
	OSCC |= OSCC_OON;

	/* Some clock cycles later (from OSCC_ON), programme PCFR (OPDE...).
	 * float chip selects and PCMCIA */
	PCFR = PCFR_OPDE | PCFR_DC_EN | PCFR_FS | PCFR_FP;
}

MACHINE_START(ARCOM_ZEUS, "Arcom/Eurotech ZEUS")
	/* Maintainer: Marc Zyngier <maz@misterjones.org> */
	.atag_offset	= 0x100,
	.map_io		= zeus_map_io,
	.nr_irqs	= ZEUS_NR_IRQS,
	.init_irq	= zeus_init_irq,
	.handle_irq	= pxa27x_handle_irq,
	.init_time	= pxa_timer_init,
	.init_machine	= zeus_init,
	.restart	= pxa_restart,
MACHINE_END