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
|
/*
* Copyright (C) ST-Ericsson SA 2010
*
* Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
* Author: Lee Jones <lee.jones@linaro.org> for ST-Ericsson
* License terms: GNU General Public License (GPL) version 2
*/
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/mfd/dbx500-prcmu.h>
#include <linux/clksrc-dbx500-prcmu.h>
#include <linux/sys_soc.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/stat.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/irq.h>
#include <linux/irqchip.h>
#include <linux/irqchip/arm-gic.h>
#include <linux/platform_data/clk-ux500.h>
#include <linux/platform_data/arm-ux500-pm.h>
#include <asm/mach/map.h>
#include "setup.h"
#include "board-mop500.h"
#include "db8500-regs.h"
#include "id.h"
void ux500_restart(enum reboot_mode mode, const char *cmd)
{
local_irq_disable();
local_fiq_disable();
prcmu_system_reset(0);
}
/*
* FIXME: Should we set up the GPIO domain here?
*
* The problem is that we cannot put the interrupt resources into the platform
* device until the irqdomain has been added. Right now, we set the GIC interrupt
* domain from init_irq(), then load the gpio driver from
* core_initcall(nmk_gpio_init) and add the platform devices from
* arch_initcall(customize_machine).
*
* This feels fragile because it depends on the gpio device getting probed
* _before_ any device uses the gpio interrupts.
*/
void __init ux500_init_irq(void)
{
gic_set_irqchip_flags(IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND);
irqchip_init();
/*
* Init clocks here so that they are available for system timer
* initialization.
*/
if (cpu_is_u8500_family()) {
prcmu_early_init(U8500_PRCMU_BASE, SZ_8K - 1);
ux500_pm_init(U8500_PRCMU_BASE, SZ_8K - 1);
u8500_of_clk_init(U8500_CLKRST1_BASE,
U8500_CLKRST2_BASE,
U8500_CLKRST3_BASE,
U8500_CLKRST5_BASE,
U8500_CLKRST6_BASE);
} else if (cpu_is_u9540()) {
prcmu_early_init(U8500_PRCMU_BASE, SZ_8K - 1);
ux500_pm_init(U8500_PRCMU_BASE, SZ_8K - 1);
u9540_clk_init(U8500_CLKRST1_BASE, U8500_CLKRST2_BASE,
U8500_CLKRST3_BASE, U8500_CLKRST5_BASE,
U8500_CLKRST6_BASE);
} else if (cpu_is_u8540()) {
prcmu_early_init(U8500_PRCMU_BASE, SZ_8K + SZ_4K - 1);
ux500_pm_init(U8500_PRCMU_BASE, SZ_8K + SZ_4K - 1);
u8540_clk_init(U8500_CLKRST1_BASE, U8500_CLKRST2_BASE,
U8500_CLKRST3_BASE, U8500_CLKRST5_BASE,
U8500_CLKRST6_BASE);
}
}
static const char * __init ux500_get_machine(void)
{
return kasprintf(GFP_KERNEL, "DB%4x", dbx500_partnumber());
}
static const char * __init ux500_get_family(void)
{
return kasprintf(GFP_KERNEL, "ux500");
}
static const char * __init ux500_get_revision(void)
{
unsigned int rev = dbx500_revision();
if (rev == 0x01)
return kasprintf(GFP_KERNEL, "%s", "ED");
else if (rev >= 0xA0)
return kasprintf(GFP_KERNEL, "%d.%d",
(rev >> 4) - 0xA + 1, rev & 0xf);
return kasprintf(GFP_KERNEL, "%s", "Unknown");
}
static ssize_t ux500_get_process(struct device *dev,
struct device_attribute *attr,
char *buf)
{
if (dbx500_id.process == 0x00)
return sprintf(buf, "Standard\n");
return sprintf(buf, "%02xnm\n", dbx500_id.process);
}
static void __init soc_info_populate(struct soc_device_attribute *soc_dev_attr,
const char *soc_id)
{
soc_dev_attr->soc_id = soc_id;
soc_dev_attr->machine = ux500_get_machine();
soc_dev_attr->family = ux500_get_family();
soc_dev_attr->revision = ux500_get_revision();
}
static const struct device_attribute ux500_soc_attr =
__ATTR(process, S_IRUGO, ux500_get_process, NULL);
struct device * __init ux500_soc_device_init(const char *soc_id)
{
struct device *parent;
struct soc_device *soc_dev;
struct soc_device_attribute *soc_dev_attr;
soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
if (!soc_dev_attr)
return ERR_PTR(-ENOMEM);
soc_info_populate(soc_dev_attr, soc_id);
soc_dev = soc_device_register(soc_dev_attr);
if (IS_ERR(soc_dev)) {
kfree(soc_dev_attr);
return NULL;
}
parent = soc_device_to_device(soc_dev);
device_create_file(parent, &ux500_soc_attr);
return parent;
}
|
