summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-nomadik/cpu-8815.c
blob: f93c596341914f48954d35e04dd2cbc384814e54 (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
/*
 * Copyright STMicroelectronics, 2007.
 *
 *  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/types.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/amba/bus.h>
#include <linux/gpio.h>

#include <mach/hardware.h>
#include <mach/irqs.h>
#include <asm/mach/map.h>
#include <asm/hardware/vic.h>

#include <asm/cacheflush.h>
#include <asm/hardware/cache-l2x0.h>

/* The 8815 has 4 GPIO blocks, let's register them immediately */
static struct nmk_gpio_platform_data cpu8815_gpio[] = {
	{
		.name = "GPIO-0-31",
		.first_gpio = 0,
		.first_irq = NOMADIK_GPIO_TO_IRQ(0),
		.parent_irq = IRQ_GPIO0,
	}, {
		.name = "GPIO-32-63",
		.first_gpio = 32,
		.first_irq = NOMADIK_GPIO_TO_IRQ(32),
		.parent_irq = IRQ_GPIO1,
	}, {
		.name = "GPIO-64-95",
		.first_gpio = 64,
		.first_irq = NOMADIK_GPIO_TO_IRQ(64),
		.parent_irq = IRQ_GPIO2,
	}, {
		.name = "GPIO-96-127", /* 124..127 not routed to pin */
		.first_gpio = 96,
		.first_irq = NOMADIK_GPIO_TO_IRQ(96),
		.parent_irq = IRQ_GPIO3,
	}
};

#define __MEM_4K_RESOURCE(x) \
	.res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}

static struct amba_device cpu8815_amba_gpio[] = {
	{
		.dev = {
			.init_name = "gpio0",
			.platform_data = cpu8815_gpio + 0,
		},
		__MEM_4K_RESOURCE(NOMADIK_GPIO0_BASE),
	}, {
		.dev = {
			.init_name = "gpio1",
			.platform_data = cpu8815_gpio + 1,
		},
		__MEM_4K_RESOURCE(NOMADIK_GPIO1_BASE),
	}, {
		.dev = {
			.init_name = "gpio2",
			.platform_data = cpu8815_gpio + 2,
		},
		__MEM_4K_RESOURCE(NOMADIK_GPIO2_BASE),
	}, {
		.dev = {
			.init_name = "gpio3",
			.platform_data = cpu8815_gpio + 3,
		},
		__MEM_4K_RESOURCE(NOMADIK_GPIO3_BASE),
	},
};

static struct amba_device *amba_devs[] __initdata = {
	cpu8815_amba_gpio + 0,
	cpu8815_amba_gpio + 1,
	cpu8815_amba_gpio + 2,
	cpu8815_amba_gpio + 3,
};

static int __init cpu8815_init(void)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
		amba_device_register(amba_devs[i], &iomem_resource);
	return 0;
}
arch_initcall(cpu8815_init);

/* All SoC devices live in the same area (see hardware.h) */
static struct map_desc nomadik_io_desc[] __initdata = {
	{
		.virtual =	NOMADIK_IO_VIRTUAL,
		.pfn =		__phys_to_pfn(NOMADIK_IO_PHYSICAL),
		.length =	NOMADIK_IO_SIZE,
		.type = 	MT_DEVICE,
	}
	/* static ram and secured ram may be added later */
};

void __init cpu8815_map_io(void)
{
	iotable_init(nomadik_io_desc, ARRAY_SIZE(nomadik_io_desc));
}

void __init cpu8815_init_irq(void)
{
	/* This modified VIC cell has two register blocks, at 0 and 0x20 */
	vic_init(io_p2v(NOMADIK_IC_BASE + 0x00), IRQ_VIC_START +  0, ~0, 0);
	vic_init(io_p2v(NOMADIK_IC_BASE + 0x20), IRQ_VIC_START + 32, ~0, 0);
}

/*
 * This function is called from the board init ("init_machine").
 */
 void __init cpu8815_platform_init(void)
{
#ifdef CONFIG_CACHE_L2X0
	/* At full speed latency must be >=2, so 0x249 in low bits */
	l2x0_init(io_p2v(NOMADIK_L2CC_BASE), 0x00730249, 0xfe000fff);
#endif
	 return;
}