summaryrefslogtreecommitdiff
path: root/arch/arm/mach-davinci/board-dm644x-evm.c
blob: 9d87d4e440eaa4a7f552cd6c55ae71989c5a3ca7 (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
/*
 * TI DaVinci EVM board support
 *
 * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
 *
 * 2007 (c) MontaVista Software, Inc. This file is licensed under
 * the terms of the GNU General Public License version 2. This program
 * is licensed "as is" without any warranty of any kind, whether express
 * or implied.
 */
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/gpio/machine.h>
#include <linux/i2c.h>
#include <linux/platform_data/pcf857x.h>
#include <linux/platform_data/gpio-davinci.h>
#include <linux/property.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/rawnand.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/nvmem-provider.h>
#include <linux/phy.h>
#include <linux/clk.h>
#include <linux/videodev2.h>
#include <linux/v4l2-dv-timings.h>
#include <linux/export.h>
#include <linux/leds.h>

#include <media/i2c/tvp514x.h>

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

#include <mach/common.h>
#include <mach/mux.h>
#include <mach/serial.h>

#include <linux/platform_data/i2c-davinci.h>
#include <linux/platform_data/mtd-davinci.h>
#include <linux/platform_data/mmc-davinci.h>
#include <linux/platform_data/usb-davinci.h>
#include <linux/platform_data/mtd-davinci-aemif.h>
#include <linux/platform_data/ti-aemif.h>

#include "davinci.h"
#include "irqs.h"

#define DM644X_EVM_PHY_ID		"davinci_mdio-0:01"
#define LXT971_PHY_ID	(0x001378e2)
#define LXT971_PHY_MASK	(0xfffffff0)

static struct mtd_partition davinci_evm_norflash_partitions[] = {
	/* bootloader (UBL, U-Boot, etc) in first 5 sectors */
	{
		.name		= "bootloader",
		.offset		= 0,
		.size		= 5 * SZ_64K,
		.mask_flags	= MTD_WRITEABLE, /* force read-only */
	},
	/* bootloader params in the next 1 sectors */
	{
		.name		= "params",
		.offset		= MTDPART_OFS_APPEND,
		.size		= SZ_64K,
		.mask_flags	= 0,
	},
	/* kernel */
	{
		.name		= "kernel",
		.offset		= MTDPART_OFS_APPEND,
		.size		= SZ_2M,
		.mask_flags	= 0
	},
	/* file system */
	{
		.name		= "filesystem",
		.offset		= MTDPART_OFS_APPEND,
		.size		= MTDPART_SIZ_FULL,
		.mask_flags	= 0
	}
};

static struct physmap_flash_data davinci_evm_norflash_data = {
	.width		= 2,
	.parts		= davinci_evm_norflash_partitions,
	.nr_parts	= ARRAY_SIZE(davinci_evm_norflash_partitions),
};

/* NOTE: CFI probe will correctly detect flash part as 32M, but EMIF
 * limits addresses to 16M, so using addresses past 16M will wrap */
static struct resource davinci_evm_norflash_resource = {
	.start		= DM644X_ASYNC_EMIF_DATA_CE0_BASE,
	.end		= DM644X_ASYNC_EMIF_DATA_CE0_BASE + SZ_16M - 1,
	.flags		= IORESOURCE_MEM,
};

static struct platform_device davinci_evm_norflash_device = {
	.name		= "physmap-flash",
	.id		= 0,
	.dev		= {
		.platform_data	= &davinci_evm_norflash_data,
	},
	.num_resources	= 1,
	.resource	= &davinci_evm_norflash_resource,
};

/* DM644x EVM includes a 64 MByte small-page NAND flash (16K blocks).
 * It may used instead of the (default) NOR chip to boot, using TI's
 * tools to install the secondary boot loader (UBL) and U-Boot.
 */
static struct mtd_partition davinci_evm_nandflash_partition[] = {
	/* Bootloader layout depends on whose u-boot is installed, but we
	 * can hide all the details.
	 *  - block 0 for u-boot environment ... in mainline u-boot
	 *  - block 1 for UBL (plus up to four backup copies in blocks 2..5)
	 *  - blocks 6...? for u-boot
	 *  - blocks 16..23 for u-boot environment ... in TI's u-boot
	 */
	{
		.name		= "bootloader",
		.offset		= 0,
		.size		= SZ_256K + SZ_128K,
		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
	},
	/* Kernel */
	{
		.name		= "kernel",
		.offset		= MTDPART_OFS_APPEND,
		.size		= SZ_4M,
		.mask_flags	= 0,
	},
	/* File system (older GIT kernels started this on the 5MB mark) */
	{
		.name		= "filesystem",
		.offset		= MTDPART_OFS_APPEND,
		.size		= MTDPART_SIZ_FULL,
		.mask_flags	= 0,
	}
	/* A few blocks at end hold a flash BBT ... created by TI's CCS
	 * using flashwriter_nand.out, but ignored by TI's versions of
	 * Linux and u-boot.  We boot faster by using them.
	 */
};

static struct davinci_aemif_timing davinci_evm_nandflash_timing = {
	.wsetup		= 20,
	.wstrobe	= 40,
	.whold		= 20,
	.rsetup		= 10,
	.rstrobe	= 40,
	.rhold		= 10,
	.ta		= 40,
};

static struct davinci_nand_pdata davinci_evm_nandflash_data = {
	.core_chipsel	= 0,
	.parts		= davinci_evm_nandflash_partition,
	.nr_parts	= ARRAY_SIZE(davinci_evm_nandflash_partition),
	.ecc_mode	= NAND_ECC_HW,
	.ecc_bits	= 1,
	.bbt_options	= NAND_BBT_USE_FLASH,
	.timing		= &davinci_evm_nandflash_timing,
};

static struct resource davinci_evm_nandflash_resource[] = {
	{
		.start		= DM644X_ASYNC_EMIF_DATA_CE0_BASE,
		.end		= DM644X_ASYNC_EMIF_DATA_CE0_BASE + SZ_16M - 1,
		.flags		= IORESOURCE_MEM,
	}, {
		.start		= DM644X_ASYNC_EMIF_CONTROL_BASE,
		.end		= DM644X_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
		.flags		= IORESOURCE_MEM,
	},
};

static struct resource davinci_evm_aemif_resource[] = {
	{
		.start		= DM644X_ASYNC_EMIF_CONTROL_BASE,
		.end		= DM644X_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
		.flags		= IORESOURCE_MEM,
	},
};

static struct aemif_abus_data davinci_evm_aemif_abus_data[] = {
	{
		.cs		= 1,
	},
};

static struct platform_device davinci_evm_nandflash_devices[] = {
	{
		.name		= "davinci_nand",
		.id		= 0,
		.dev		= {
			.platform_data	= &davinci_evm_nandflash_data,
		},
		.num_resources	= ARRAY_SIZE(davinci_evm_nandflash_resource),
		.resource	= davinci_evm_nandflash_resource,
	},
};

static struct aemif_platform_data davinci_evm_aemif_pdata = {
	.abus_data = davinci_evm_aemif_abus_data,
	.num_abus_data = ARRAY_SIZE(davinci_evm_aemif_abus_data),
	.sub_devices = davinci_evm_nandflash_devices,
	.num_sub_devices = ARRAY_SIZE(davinci_evm_nandflash_devices),
};

static struct platform_device davinci_evm_aemif_device = {
	.name			= "ti-aemif",
	.id			= -1,
	.dev = {
		.platform_data	= &davinci_evm_aemif_pdata,
	},
	.resource		= davinci_evm_aemif_resource,
	.num_resources		= ARRAY_SIZE(davinci_evm_aemif_resource),
};

static u64 davinci_fb_dma_mask = DMA_BIT_MASK(32);

static struct platform_device davinci_fb_device = {
	.name		= "davincifb",
	.id		= -1,
	.dev = {
		.dma_mask		= &davinci_fb_dma_mask,
		.coherent_dma_mask      = DMA_BIT_MASK(32),
	},
	.num_resources = 0,
};

static struct tvp514x_platform_data dm644xevm_tvp5146_pdata = {
	.clk_polarity = 0,
	.hs_polarity = 1,
	.vs_polarity = 1
};

#define TVP514X_STD_ALL	(V4L2_STD_NTSC | V4L2_STD_PAL)
/* Inputs available at the TVP5146 */
static struct v4l2_input dm644xevm_tvp5146_inputs[] = {
	{
		.index = 0,
		.name = "Composite",
		.type = V4L2_INPUT_TYPE_CAMERA,
		.std = TVP514X_STD_ALL,
	},
	{
		.index = 1,
		.name = "S-Video",
		.type = V4L2_INPUT_TYPE_CAMERA,
		.std = TVP514X_STD_ALL,
	},
};

/*
 * this is the route info for connecting each input to decoder
 * ouput that goes to vpfe. There is a one to one correspondence
 * with tvp5146_inputs
 */
static struct vpfe_route dm644xevm_tvp5146_routes[] = {
	{
		.input = INPUT_CVBS_VI2B,
		.output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
	},
	{
		.input = INPUT_SVIDEO_VI2C_VI1C,
		.output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
	},
};

static struct vpfe_subdev_info dm644xevm_vpfe_sub_devs[] = {
	{
		.name = "tvp5146",
		.grp_id = 0,
		.num_inputs = ARRAY_SIZE(dm644xevm_tvp5146_inputs),
		.inputs = dm644xevm_tvp5146_inputs,
		.routes = dm644xevm_tvp5146_routes,
		.can_route = 1,
		.ccdc_if_params = {
			.if_type = VPFE_BT656,
			.hdpol = VPFE_PINPOL_POSITIVE,
			.vdpol = VPFE_PINPOL_POSITIVE,
		},
		.board_info = {
			I2C_BOARD_INFO("tvp5146", 0x5d),
			.platform_data = &dm644xevm_tvp5146_pdata,
		},
	},
};

static struct vpfe_config dm644xevm_capture_cfg = {
	.num_subdevs = ARRAY_SIZE(dm644xevm_vpfe_sub_devs),
	.i2c_adapter_id = 1,
	.sub_devs = dm644xevm_vpfe_sub_devs,
	.card_name = "DM6446 EVM",
	.ccdc = "DM6446 CCDC",
};

static struct platform_device rtc_dev = {
	.name           = "rtc_davinci_evm",
	.id             = -1,
};

/*----------------------------------------------------------------------*/
#ifdef CONFIG_I2C
/*
 * I2C GPIO expanders
 */

#define PCF_Uxx_BASE(x)	(DAVINCI_N_GPIO + ((x) * 8))


/* U2 -- LEDs */

static struct gpio_led evm_leds[] = {
	{ .name = "DS8", .active_low = 1,
		.default_trigger = "heartbeat", },
	{ .name = "DS7", .active_low = 1, },
	{ .name = "DS6", .active_low = 1, },
	{ .name = "DS5", .active_low = 1, },
	{ .name = "DS4", .active_low = 1, },
	{ .name = "DS3", .active_low = 1, },
	{ .name = "DS2", .active_low = 1,
		.default_trigger = "mmc0", },
	{ .name = "DS1", .active_low = 1,
		.default_trigger = "disk-activity", },
};

static const struct gpio_led_platform_data evm_led_data = {
	.num_leds	= ARRAY_SIZE(evm_leds),
	.leds		= evm_leds,
};

static struct platform_device *evm_led_dev;

static int
evm_led_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
{
	struct gpio_led *leds = evm_leds;
	int status;

	while (ngpio--) {
		leds->gpio = gpio++;
		leds++;
	}

	/* what an extremely annoying way to be forced to handle
	 * device unregistration ...
	 */
	evm_led_dev = platform_device_alloc("leds-gpio", 0);
	platform_device_add_data(evm_led_dev,
			&evm_led_data, sizeof evm_led_data);

	evm_led_dev->dev.parent = &client->dev;
	status = platform_device_add(evm_led_dev);
	if (status < 0) {
		platform_device_put(evm_led_dev);
		evm_led_dev = NULL;
	}
	return status;
}

static int
evm_led_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
{
	if (evm_led_dev) {
		platform_device_unregister(evm_led_dev);
		evm_led_dev = NULL;
	}
	return 0;
}

static struct pcf857x_platform_data pcf_data_u2 = {
	.gpio_base	= PCF_Uxx_BASE(0),
	.setup		= evm_led_setup,
	.teardown	= evm_led_teardown,
};


/* U18 - A/V clock generator and user switch */

static int sw_gpio;

static ssize_t
sw_show(struct device *d, struct device_attribute *a, char *buf)
{
	char *s = gpio_get_value_cansleep(sw_gpio) ? "on\n" : "off\n";

	strcpy(buf, s);
	return strlen(s);
}

static DEVICE_ATTR(user_sw, S_IRUGO, sw_show, NULL);

static int
evm_u18_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
{
	int	status;

	/* export dip switch option */
	sw_gpio = gpio + 7;
	status = gpio_request(sw_gpio, "user_sw");
	if (status == 0)
		status = gpio_direction_input(sw_gpio);
	if (status == 0)
		status = device_create_file(&client->dev, &dev_attr_user_sw);
	else
		gpio_free(sw_gpio);
	if (status != 0)
		sw_gpio = -EINVAL;

	/* audio PLL:  48 kHz (vs 44.1 or 32), single rate (vs double) */
	gpio_request(gpio + 3, "pll_fs2");
	gpio_direction_output(gpio + 3, 0);

	gpio_request(gpio + 2, "pll_fs1");
	gpio_direction_output(gpio + 2, 0);

	gpio_request(gpio + 1, "pll_sr");
	gpio_direction_output(gpio + 1, 0);

	return 0;
}

static int
evm_u18_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
{
	gpio_free(gpio + 1);
	gpio_free(gpio + 2);
	gpio_free(gpio + 3);

	if (sw_gpio > 0) {
		device_remove_file(&client->dev, &dev_attr_user_sw);
		gpio_free(sw_gpio);
	}
	return 0;
}

static struct pcf857x_platform_data pcf_data_u18 = {
	.gpio_base	= PCF_Uxx_BASE(1),
	.n_latch	= (1 << 3) | (1 << 2) | (1 << 1),
	.setup		= evm_u18_setup,
	.teardown	= evm_u18_teardown,
};


/* U35 - various I/O signals used to manage USB, CF, ATA, etc */

static int
evm_u35_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
{
	/* p0 = nDRV_VBUS (initial:  don't supply it) */
	gpio_request(gpio + 0, "nDRV_VBUS");
	gpio_direction_output(gpio + 0, 1);

	/* p1 = VDDIMX_EN */
	gpio_request(gpio + 1, "VDDIMX_EN");
	gpio_direction_output(gpio + 1, 1);

	/* p2 = VLYNQ_EN */
	gpio_request(gpio + 2, "VLYNQ_EN");
	gpio_direction_output(gpio + 2, 1);

	/* p3 = n3V3_CF_RESET (initial: stay in reset) */
	gpio_request(gpio + 3, "nCF_RESET");
	gpio_direction_output(gpio + 3, 0);

	/* (p4 unused) */

	/* p5 = 1V8_WLAN_RESET (initial: stay in reset) */
	gpio_request(gpio + 5, "WLAN_RESET");
	gpio_direction_output(gpio + 5, 1);

	/* p6 = nATA_SEL (initial: select) */
	gpio_request(gpio + 6, "nATA_SEL");
	gpio_direction_output(gpio + 6, 0);

	/* p7 = nCF_SEL (initial: deselect) */
	gpio_request(gpio + 7, "nCF_SEL");
	gpio_direction_output(gpio + 7, 1);

	return 0;
}

static int
evm_u35_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
{
	gpio_free(gpio + 7);
	gpio_free(gpio + 6);
	gpio_free(gpio + 5);
	gpio_free(gpio + 3);
	gpio_free(gpio + 2);
	gpio_free(gpio + 1);
	gpio_free(gpio + 0);
	return 0;
}

static struct pcf857x_platform_data pcf_data_u35 = {
	.gpio_base	= PCF_Uxx_BASE(2),
	.setup		= evm_u35_setup,
	.teardown	= evm_u35_teardown,
};

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

/* Most of this EEPROM is unused, but U-Boot uses some data:
 *  - 0x7f00, 6 bytes Ethernet Address
 *  - 0x0039, 1 byte NTSC vs PAL (bit 0x80 == PAL)
 *  - ... newer boards may have more
 */

static struct nvmem_cell_info dm644evm_nvmem_cells[] = {
	{
		.name		= "macaddr",
		.offset		= 0x7f00,
		.bytes		= ETH_ALEN,
	}
};

static struct nvmem_cell_table dm644evm_nvmem_cell_table = {
	.nvmem_name	= "1-00500",
	.cells		= dm644evm_nvmem_cells,
	.ncells		= ARRAY_SIZE(dm644evm_nvmem_cells),
};

static struct nvmem_cell_lookup dm644evm_nvmem_cell_lookup = {
	.nvmem_name	= "1-00500",
	.cell_name	= "macaddr",
	.dev_id		= "davinci_emac.1",
	.con_id		= "mac-address",
};

static const struct property_entry eeprom_properties[] = {
	PROPERTY_ENTRY_U32("pagesize", 64),
	{ }
};

/*
 * MSP430 supports RTC, card detection, input from IR remote, and
 * a bit more.  It triggers interrupts on GPIO(7) from pressing
 * buttons on the IR remote, and for card detect switches.
 */
static struct i2c_client *dm6446evm_msp;

static int dm6446evm_msp_probe(struct i2c_client *client,
		const struct i2c_device_id *id)
{
	dm6446evm_msp = client;
	return 0;
}

static int dm6446evm_msp_remove(struct i2c_client *client)
{
	dm6446evm_msp = NULL;
	return 0;
}

static const struct i2c_device_id dm6446evm_msp_ids[] = {
	{ "dm6446evm_msp", 0, },
	{ /* end of list */ },
};

static struct i2c_driver dm6446evm_msp_driver = {
	.driver.name	= "dm6446evm_msp",
	.id_table	= dm6446evm_msp_ids,
	.probe		= dm6446evm_msp_probe,
	.remove		= dm6446evm_msp_remove,
};

static int dm6444evm_msp430_get_pins(void)
{
	static const char txbuf[2] = { 2, 4, };
	char buf[4];
	struct i2c_msg msg[2] = {
		{
			.flags = 0,
			.len = 2,
			.buf = (void __force *)txbuf,
		},
		{
			.flags = I2C_M_RD,
			.len = 4,
			.buf = buf,
		},
	};
	int status;

	if (!dm6446evm_msp)
		return -ENXIO;

	msg[0].addr = dm6446evm_msp->addr;
	msg[1].addr = dm6446evm_msp->addr;

	/* Command 4 == get input state, returns port 2 and port3 data
	 *   S Addr W [A] len=2 [A] cmd=4 [A]
	 *   RS Addr R [A] [len=4] A [cmd=4] A [port2] A [port3] N P
	 */
	status = i2c_transfer(dm6446evm_msp->adapter, msg, 2);
	if (status < 0)
		return status;

	dev_dbg(&dm6446evm_msp->dev, "PINS: %4ph\n", buf);

	return (buf[3] << 8) | buf[2];
}

static int dm6444evm_mmc_get_cd(int module)
{
	int status = dm6444evm_msp430_get_pins();

	return (status < 0) ? status : !(status & BIT(1));
}

static int dm6444evm_mmc_get_ro(int module)
{
	int status = dm6444evm_msp430_get_pins();

	return (status < 0) ? status : status & BIT(6 + 8);
}

static struct davinci_mmc_config dm6446evm_mmc_config = {
	.get_cd		= dm6444evm_mmc_get_cd,
	.get_ro		= dm6444evm_mmc_get_ro,
	.wires		= 4,
};

static struct i2c_board_info __initdata i2c_info[] =  {
	{
		I2C_BOARD_INFO("dm6446evm_msp", 0x23),
	},
	{
		I2C_BOARD_INFO("pcf8574", 0x38),
		.platform_data	= &pcf_data_u2,
	},
	{
		I2C_BOARD_INFO("pcf8574", 0x39),
		.platform_data	= &pcf_data_u18,
	},
	{
		I2C_BOARD_INFO("pcf8574", 0x3a),
		.platform_data	= &pcf_data_u35,
	},
	{
		I2C_BOARD_INFO("24c256", 0x50),
		.properties = eeprom_properties,
	},
	{
		I2C_BOARD_INFO("tlv320aic33", 0x1b),
	},
};

#define DM644X_I2C_SDA_PIN	GPIO_TO_PIN(2, 12)
#define DM644X_I2C_SCL_PIN	GPIO_TO_PIN(2, 11)

static struct gpiod_lookup_table i2c_recovery_gpiod_table = {
	.dev_id = "i2c_davinci.1",
	.table = {
		GPIO_LOOKUP("davinci_gpio", DM644X_I2C_SDA_PIN, "sda",
			    GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
		GPIO_LOOKUP("davinci_gpio", DM644X_I2C_SCL_PIN, "scl",
			    GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
		{ }
	},
};

/* The msp430 uses a slow bitbanged I2C implementation (ergo 20 KHz),
 * which requires 100 usec of idle bus after i2c writes sent to it.
 */
static struct davinci_i2c_platform_data i2c_pdata = {
	.bus_freq	= 20 /* kHz */,
	.bus_delay	= 100 /* usec */,
	.gpio_recovery	= true,
};

static void __init evm_init_i2c(void)
{
	gpiod_add_lookup_table(&i2c_recovery_gpiod_table);
	davinci_init_i2c(&i2c_pdata);
	i2c_add_driver(&dm6446evm_msp_driver);
	i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
}
#endif

#define VENC_STD_ALL	(V4L2_STD_NTSC | V4L2_STD_PAL)

/* venc standard timings */
static struct vpbe_enc_mode_info dm644xevm_enc_std_timing[] = {
	{
		.name		= "ntsc",
		.timings_type	= VPBE_ENC_STD,
		.std_id		= V4L2_STD_NTSC,
		.interlaced	= 1,
		.xres		= 720,
		.yres		= 480,
		.aspect		= {11, 10},
		.fps		= {30000, 1001},
		.left_margin	= 0x79,
		.upper_margin	= 0x10,
	},
	{
		.name		= "pal",
		.timings_type	= VPBE_ENC_STD,
		.std_id		= V4L2_STD_PAL,
		.interlaced	= 1,
		.xres		= 720,
		.yres		= 576,
		.aspect		= {54, 59},
		.fps		= {25, 1},
		.left_margin	= 0x7e,
		.upper_margin	= 0x16,
	},
};

/* venc dv preset timings */
static struct vpbe_enc_mode_info dm644xevm_enc_preset_timing[] = {
	{
		.name		= "480p59_94",
		.timings_type	= VPBE_ENC_DV_TIMINGS,
		.dv_timings	= V4L2_DV_BT_CEA_720X480P59_94,
		.interlaced	= 0,
		.xres		= 720,
		.yres		= 480,
		.aspect		= {1, 1},
		.fps		= {5994, 100},
		.left_margin	= 0x80,
		.upper_margin	= 0x20,
	},
	{
		.name		= "576p50",
		.timings_type	= VPBE_ENC_DV_TIMINGS,
		.dv_timings	= V4L2_DV_BT_CEA_720X576P50,
		.interlaced	= 0,
		.xres		= 720,
		.yres		= 576,
		.aspect		= {1, 1},
		.fps		= {50, 1},
		.left_margin	= 0x7e,
		.upper_margin	= 0x30,
	},
};

/*
 * The outputs available from VPBE + encoders. Keep the order same
 * as that of encoders. First those from venc followed by that from
 * encoders. Index in the output refers to index on a particular encoder.
 * Driver uses this index to pass it to encoder when it supports more
 * than one output. Userspace applications use index of the array to
 * set an output.
 */
static struct vpbe_output dm644xevm_vpbe_outputs[] = {
	{
		.output		= {
			.index		= 0,
			.name		= "Composite",
			.type		= V4L2_OUTPUT_TYPE_ANALOG,
			.std		= VENC_STD_ALL,
			.capabilities	= V4L2_OUT_CAP_STD,
		},
		.subdev_name	= DM644X_VPBE_VENC_SUBDEV_NAME,
		.default_mode	= "ntsc",
		.num_modes	= ARRAY_SIZE(dm644xevm_enc_std_timing),
		.modes		= dm644xevm_enc_std_timing,
	},
	{
		.output		= {
			.index		= 1,
			.name		= "Component",
			.type		= V4L2_OUTPUT_TYPE_ANALOG,
			.capabilities	= V4L2_OUT_CAP_DV_TIMINGS,
		},
		.subdev_name	= DM644X_VPBE_VENC_SUBDEV_NAME,
		.default_mode	= "480p59_94",
		.num_modes	= ARRAY_SIZE(dm644xevm_enc_preset_timing),
		.modes		= dm644xevm_enc_preset_timing,
	},
};

static struct vpbe_config dm644xevm_display_cfg = {
	.module_name	= "dm644x-vpbe-display",
	.i2c_adapter_id	= 1,
	.osd		= {
		.module_name	= DM644X_VPBE_OSD_SUBDEV_NAME,
	},
	.venc		= {
		.module_name	= DM644X_VPBE_VENC_SUBDEV_NAME,
	},
	.num_outputs	= ARRAY_SIZE(dm644xevm_vpbe_outputs),
	.outputs	= dm644xevm_vpbe_outputs,
};

static struct platform_device *davinci_evm_devices[] __initdata = {
	&davinci_fb_device,
	&rtc_dev,
};

static void __init
davinci_evm_map_io(void)
{
	dm644x_init();
}

static int davinci_phy_fixup(struct phy_device *phydev)
{
	unsigned int control;
	/* CRITICAL: Fix for increasing PHY signal drive strength for
	 * TX lockup issue. On DaVinci EVM, the Intel LXT971 PHY
	 * signal strength was low causing  TX to fail randomly. The
	 * fix is to Set bit 11 (Increased MII drive strength) of PHY
	 * register 26 (Digital Config register) on this phy. */
	control = phy_read(phydev, 26);
	phy_write(phydev, 26, (control | 0x800));
	return 0;
}

#define HAS_ATA		(IS_ENABLED(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \
			 IS_ENABLED(CONFIG_PATA_BK3710))

#define HAS_NOR		IS_ENABLED(CONFIG_MTD_PHYSMAP)

#define HAS_NAND	IS_ENABLED(CONFIG_MTD_NAND_DAVINCI)

static __init void davinci_evm_init(void)
{
	int ret;
	struct clk *aemif_clk;
	struct davinci_soc_info *soc_info = &davinci_soc_info;

	dm644x_register_clocks();

	dm644x_init_devices();

	ret = dm644x_gpio_register();
	if (ret)
		pr_warn("%s: GPIO init failed: %d\n", __func__, ret);

	aemif_clk = clk_get(NULL, "aemif");
	clk_prepare_enable(aemif_clk);

	if (HAS_ATA) {
		if (HAS_NAND || HAS_NOR)
			pr_warn("WARNING: both IDE and Flash are enabled, but they share AEMIF pins\n"
				"\tDisable IDE for NAND/NOR support\n");
		davinci_init_ide();
	} else if (HAS_NAND || HAS_NOR) {
		davinci_cfg_reg(DM644X_HPIEN_DISABLE);
		davinci_cfg_reg(DM644X_ATAEN_DISABLE);

		/* only one device will be jumpered and detected */
		if (HAS_NAND) {
			platform_device_register(&davinci_evm_aemif_device);
#ifdef CONFIG_I2C
			evm_leds[7].default_trigger = "nand-disk";
#endif
			if (HAS_NOR)
				pr_warn("WARNING: both NAND and NOR flash are enabled; disable one of them.\n");
		} else if (HAS_NOR)
			platform_device_register(&davinci_evm_norflash_device);
	}

	platform_add_devices(davinci_evm_devices,
			     ARRAY_SIZE(davinci_evm_devices));
#ifdef CONFIG_I2C
	nvmem_add_cell_table(&dm644evm_nvmem_cell_table);
	nvmem_add_cell_lookups(&dm644evm_nvmem_cell_lookup, 1);
	evm_init_i2c();
	davinci_setup_mmc(0, &dm6446evm_mmc_config);
#endif
	dm644x_init_video(&dm644xevm_capture_cfg, &dm644xevm_display_cfg);

	davinci_serial_init(dm644x_serial_device);
	dm644x_init_asp();

	/* irlml6401 switches over 1A, in under 8 msec */
	davinci_setup_usb(1000, 8);

	if (IS_BUILTIN(CONFIG_PHYLIB)) {
		soc_info->emac_pdata->phy_id = DM644X_EVM_PHY_ID;
		/* Register the fixup for PHY on DaVinci */
		phy_register_fixup_for_uid(LXT971_PHY_ID, LXT971_PHY_MASK,
						davinci_phy_fixup);
	}
}

MACHINE_START(DAVINCI_EVM, "DaVinci DM644x EVM")
	/* Maintainer: MontaVista Software <source@mvista.com> */
	.atag_offset  = 0x100,
	.map_io	      = davinci_evm_map_io,
	.init_irq     = dm644x_init_irq,
	.init_time	= dm644x_init_time,
	.init_machine = davinci_evm_init,
	.init_late	= davinci_init_late,
	.dma_zone_size	= SZ_128M,
MACHINE_END