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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - arch/arm/mach-s3c24xx/s3c2410.c
1 /* linux/arch/arm/mach-s3c2410/s3c2410.c
3 * Copyright (c) 2003-2005 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
6 * http://www.simtec.co.uk/products/EB2410ITX/
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
13 #include <linux/kernel.h>
14 #include <linux/types.h>
15 #include <linux/interrupt.h>
16 #include <linux/list.h>
17 #include <linux/timer.h>
18 #include <linux/init.h>
19 #include <linux/gpio.h>
20 #include <linux/clk.h>
21 #include <linux/device.h>
22 #include <linux/syscore_ops.h>
23 #include <linux/serial_core.h>
24 #include <linux/serial_s3c.h>
25 #include <linux/platform_device.h>
26 #include <linux/reboot.h>
29 #include <asm/mach/arch.h>
30 #include <asm/mach/map.h>
31 #include <asm/mach/irq.h>
33 #include <mach/hardware.h>
34 #include <mach/gpio-samsung.h>
36 #include <asm/system_misc.h>
38 #include <plat/cpu-freq.h>
40 #include <mach/regs-clock.h>
43 #include <plat/devs.h>
45 #include <plat/watchdog-reset.h>
47 #include <plat/gpio-core.h>
48 #include <plat/gpio-cfg.h>
49 #include <plat/gpio-cfg-helpers.h>
53 /* Initial IO mappings */
55 static struct map_desc s3c2410_iodesc
[] __initdata
= {
61 /* our uart devices */
63 /* uart registration process */
65 void __init
s3c2410_init_uarts(struct s3c2410_uartcfg
*cfg
, int no
)
67 s3c24xx_init_uartdevs("s3c2410-uart", s3c2410_uart_resources
, cfg
, no
);
72 * register the standard cpu IO areas, and any passed in from the
73 * machine specific initialisation.
76 void __init
s3c2410_map_io(void)
78 s3c24xx_gpiocfg_default
.set_pull
= s3c24xx_gpio_setpull_1up
;
79 s3c24xx_gpiocfg_default
.get_pull
= s3c24xx_gpio_getpull_1up
;
81 iotable_init(s3c2410_iodesc
, ARRAY_SIZE(s3c2410_iodesc
));
84 struct bus_type s3c2410_subsys
= {
85 .name
= "s3c2410-core",
86 .dev_name
= "s3c2410-core",
89 /* Note, we would have liked to name this s3c2410-core, but we cannot
90 * register two subsystems with the same name.
92 struct bus_type s3c2410a_subsys
= {
93 .name
= "s3c2410a-core",
94 .dev_name
= "s3c2410a-core",
97 static struct device s3c2410_dev
= {
98 .bus
= &s3c2410_subsys
,
101 /* need to register the subsystem before we actually register the device, and
102 * we also need to ensure that it has been initialised before any of the
103 * drivers even try to use it (even if not on an s3c2410 based system)
104 * as a driver which may support both 2410 and 2440 may try and use it.
107 static int __init
s3c2410_core_init(void)
109 return subsys_system_register(&s3c2410_subsys
, NULL
);
112 core_initcall(s3c2410_core_init
);
114 static int __init
s3c2410a_core_init(void)
116 return subsys_system_register(&s3c2410a_subsys
, NULL
);
119 core_initcall(s3c2410a_core_init
);
121 int __init
s3c2410_init(void)
123 printk("S3C2410: Initialising architecture\n");
126 register_syscore_ops(&s3c2410_pm_syscore_ops
);
127 register_syscore_ops(&s3c24xx_irq_syscore_ops
);
130 return device_register(&s3c2410_dev
);
133 int __init
s3c2410a_init(void)
135 s3c2410_dev
.bus
= &s3c2410a_subsys
;
136 return s3c2410_init();
139 void s3c2410_restart(enum reboot_mode mode
, const char *cmd
)
141 if (mode
== REBOOT_SOFT
) {
147 /* we'll take a jump through zero as a poor second */