aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-clps711x/p720t.c
blob: d95cb8ace251352da43e2af0f70c33b4b1194280 (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
/*
 *  linux/arch/arm/mach-clps711x/p720t.c
 *
 *  Copyright (C) 2000-2001 Deep Blue Solutions Ltd
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/leds.h>
#include <linux/platform_device.h>

#include <mach/hardware.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/setup.h>
#include <asm/sizes.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/syspld.h>

#include "common.h"

#define GPIO_USERLED	CLPS711X_GPIO(3, 0)

/*
 * Map the P720T system PLD. It occupies two address spaces:
 * 0x10000000 and 0x10400000. We map both regions as one.
 */
static struct map_desc p720t_io_desc[] __initdata = {
	{
		.virtual	= SYSPLD_VIRT_BASE,
		.pfn		= __phys_to_pfn(SYSPLD_PHYS_BASE),
		.length		= SZ_8M,
		.type		= MT_DEVICE,
	},
};

static void __init
fixup_p720t(struct tag *tag, char **cmdline, struct meminfo *mi)
{
	/*
	 * Our bootloader doesn't setup any tags (yet).
	 */
	if (tag->hdr.tag != ATAG_CORE) {
		tag->hdr.tag = ATAG_CORE;
		tag->hdr.size = tag_size(tag_core);
		tag->u.core.flags = 0;
		tag->u.core.pagesize = PAGE_SIZE;
		tag->u.core.rootdev = 0x0100;

		tag = tag_next(tag);
		tag->hdr.tag = ATAG_MEM;
		tag->hdr.size = tag_size(tag_mem32);
		tag->u.mem.size = 4096;
		tag->u.mem.start = PHYS_OFFSET;

		tag = tag_next(tag);
		tag->hdr.tag = ATAG_NONE;
		tag->hdr.size = 0;
	}
}

static void __init p720t_map_io(void)
{
	clps711x_map_io();
	iotable_init(p720t_io_desc, ARRAY_SIZE(p720t_io_desc));
}

static void __init p720t_init_early(void)
{
	/*
	 * Power down as much as possible in case we don't
	 * have the drivers loaded.
	 */
	PLD_LCDEN = 0;
	PLD_PWR  &= ~(PLD_S4_ON|PLD_S3_ON|PLD_S2_ON|PLD_S1_ON);

	PLD_KBD   = 0;
	PLD_IO    = 0;
	PLD_IRDA  = 0;
	PLD_CODEC = 0;
	PLD_TCH   = 0;
	PLD_SPI   = 0;
	if (!IS_ENABLED(CONFIG_DEBUG_LL)) {
		PLD_COM2 = 0;
		PLD_COM1 = 0;
	}
}

static struct gpio_led p720t_gpio_leds[] = {
	{
		.name			= "User LED",
		.default_trigger	= "heartbeat",
		.gpio			= GPIO_USERLED,
	},
};

static struct gpio_led_platform_data p720t_gpio_led_pdata __initdata = {
	.leds		= p720t_gpio_leds,
	.num_leds	= ARRAY_SIZE(p720t_gpio_leds),
};

static void __init p720t_init(void)
{
	platform_device_register_simple("video-clps711x", 0, NULL, 0);
}

static void __init p720t_init_late(void)
{
	platform_device_register_data(&platform_bus, "leds-gpio", 0,
				      &p720t_gpio_led_pdata,
				      sizeof(p720t_gpio_led_pdata));
}

MACHINE_START(P720T, "ARM-Prospector720T")
	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
	.atag_offset	= 0x100,
	.fixup		= fixup_p720t,
	.map_io		= p720t_map_io,
	.init_early	= p720t_init_early,
	.init_irq	= clps711x_init_irq,
	.timer		= &clps711x_timer,
	.init_machine	= p720t_init,
	.init_late	= p720t_init_late,
	.restart	= clps711x_restart,
MACHINE_END