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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 
45 #include "common.h"
46 #include "nand-core.h"
47 #include "regs-dsc.h"
48 
49 static struct map_desc s3c244x_iodesc[] __initdata = {
50 	IODESC_ENT(CLKPWR),
51 	IODESC_ENT(TIMER),
52 	IODESC_ENT(WATCHDOG),
53 };
54 
55 /* uart initialisation */
56 
s3c244x_init_uarts(struct s3c2410_uartcfg * cfg,int no)57 void __init s3c244x_init_uarts(struct s3c2410_uartcfg *cfg, int no)
58 {
59 	s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
60 }
61 
s3c244x_map_io(void)62 void __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 
80 struct bus_type s3c2440_subsys = {
81 	.name		= "s3c2440-core",
82 	.dev_name	= "s3c2440-core",
83 };
84 
85 struct 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 
s3c2440_core_init(void)96 static int __init s3c2440_core_init(void)
97 {
98 	return subsys_system_register(&s3c2440_subsys, NULL);
99 }
100 
101 core_initcall(s3c2440_core_init);
102 
s3c2442_core_init(void)103 static int __init s3c2442_core_init(void)
104 {
105 	return subsys_system_register(&s3c2442_subsys, NULL);
106 }
107 
108 core_initcall(s3c2442_core_init);
109 
110 
111 #ifdef CONFIG_PM_SLEEP
112 static 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 
s3c244x_suspend(void)120 static int s3c244x_suspend(void)
121 {
122 	s3c_pm_do_save(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
123 	return 0;
124 }
125 
s3c244x_resume(void)126 static void s3c244x_resume(void)
127 {
128 	s3c_pm_do_restore(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
129 }
130 
131 struct syscore_ops s3c244x_pm_syscore_ops = {
132 	.suspend	= s3c244x_suspend,
133 	.resume		= s3c244x_resume,
134 };
135 #endif
136