1/* linux/arch/arm/plat-s3c24xx/s3c244x.c
2 *
3 * Copyright (c) 2004-2006 Simtec Electronics
4 *   Ben Dooks <ben@simtec.co.uk>
5 *
6 * Samsung S3C2440 and S3C2442 Mobile CPU support (not S3C2443)
7 *
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.
11*/
12
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/serial_core.h>
20#include <linux/serial_s3c.h>
21#include <linux/platform_device.h>
22#include <linux/reboot.h>
23#include <linux/device.h>
24#include <linux/syscore_ops.h>
25#include <linux/clk.h>
26#include <linux/io.h>
27
28#include <asm/system_misc.h>
29#include <asm/mach/arch.h>
30#include <asm/mach/map.h>
31#include <asm/mach/irq.h>
32
33#include <mach/hardware.h>
34#include <asm/irq.h>
35
36#include <plat/cpu-freq.h>
37
38#include <mach/regs-clock.h>
39#include <mach/regs-gpio.h>
40
41#include <plat/devs.h>
42#include <plat/cpu.h>
43#include <plat/pm.h>
44#include <plat/nand-core.h>
45
46#include "common.h"
47#include "regs-dsc.h"
48
49static struct map_desc s3c244x_iodesc[] __initdata = {
50	IODESC_ENT(CLKPWR),
51	IODESC_ENT(TIMER),
52	IODESC_ENT(WATCHDOG),
53};
54
55/* uart initialisation */
56
57void __init s3c244x_init_uarts(struct s3c2410_uartcfg *cfg, int no)
58{
59	s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
60}
61
62void __init s3c244x_map_io(void)
63{
64	/* register our io-tables */
65
66	iotable_init(s3c244x_iodesc, ARRAY_SIZE(s3c244x_iodesc));
67
68	/* rename any peripherals used differing from the s3c2410 */
69
70	s3c_device_sdi.name  = "s3c2440-sdi";
71	s3c_device_i2c0.name  = "s3c2440-i2c";
72	s3c_nand_setname("s3c2440-nand");
73	s3c_device_ts.name = "s3c2440-ts";
74	s3c_device_usbgadget.name = "s3c2440-usbgadget";
75	s3c2410_device_dclk.name = "s3c2440-dclk";
76}
77
78/* Since the S3C2442 and S3C2440 share items, put both subsystems here */
79
80struct bus_type s3c2440_subsys = {
81	.name		= "s3c2440-core",
82	.dev_name	= "s3c2440-core",
83};
84
85struct bus_type s3c2442_subsys = {
86	.name		= "s3c2442-core",
87	.dev_name	= "s3c2442-core",
88};
89
90/* need to register the subsystem before we actually register the device, and
91 * we also need to ensure that it has been initialised before any of the
92 * drivers even try to use it (even if not on an s3c2440 based system)
93 * as a driver which may support both 2410 and 2440 may try and use it.
94*/
95
96static int __init s3c2440_core_init(void)
97{
98	return subsys_system_register(&s3c2440_subsys, NULL);
99}
100
101core_initcall(s3c2440_core_init);
102
103static int __init s3c2442_core_init(void)
104{
105	return subsys_system_register(&s3c2442_subsys, NULL);
106}
107
108core_initcall(s3c2442_core_init);
109
110
111#ifdef CONFIG_PM_SLEEP
112static struct sleep_save s3c244x_sleep[] = {
113	SAVE_ITEM(S3C2440_DSC0),
114	SAVE_ITEM(S3C2440_DSC1),
115	SAVE_ITEM(S3C2440_GPJDAT),
116	SAVE_ITEM(S3C2440_GPJCON),
117	SAVE_ITEM(S3C2440_GPJUP)
118};
119
120static int s3c244x_suspend(void)
121{
122	s3c_pm_do_save(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
123	return 0;
124}
125
126static void s3c244x_resume(void)
127{
128	s3c_pm_do_restore(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
129}
130
131struct syscore_ops s3c244x_pm_syscore_ops = {
132	.suspend	= s3c244x_suspend,
133	.resume		= s3c244x_resume,
134};
135#endif
136