1 // SPDX-License-Identifier: GPL-2.0
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 #include <linux/kernel.h>
9 #include <linux/types.h>
10 #include <linux/interrupt.h>
11 #include <linux/list.h>
12 #include <linux/timer.h>
13 #include <linux/init.h>
14 #include <linux/serial_core.h>
15 #include <linux/serial_s3c.h>
16 #include <linux/platform_device.h>
17 #include <linux/reboot.h>
18 #include <linux/device.h>
19 #include <linux/syscore_ops.h>
20 #include <linux/clk.h>
21 #include <linux/io.h>
22
23 #include <asm/system_misc.h>
24 #include <asm/mach/arch.h>
25 #include <asm/mach/map.h>
26 #include <asm/mach/irq.h>
27
28 #include <mach/hardware.h>
29 #include <asm/irq.h>
30
31 #include <plat/cpu-freq.h>
32
33 #include <mach/regs-clock.h>
34 #include <mach/regs-gpio.h>
35
36 #include <plat/devs.h>
37 #include <plat/cpu.h>
38 #include <plat/pm.h>
39
40 #include "common.h"
41 #include "nand-core.h"
42 #include "regs-dsc.h"
43
44 static struct map_desc s3c244x_iodesc[] __initdata = {
45 IODESC_ENT(CLKPWR),
46 IODESC_ENT(TIMER),
47 IODESC_ENT(WATCHDOG),
48 };
49
50 /* uart initialisation */
51
s3c244x_init_uarts(struct s3c2410_uartcfg * cfg,int no)52 void __init s3c244x_init_uarts(struct s3c2410_uartcfg *cfg, int no)
53 {
54 s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
55 }
56
s3c244x_map_io(void)57 void __init s3c244x_map_io(void)
58 {
59 /* register our io-tables */
60
61 iotable_init(s3c244x_iodesc, ARRAY_SIZE(s3c244x_iodesc));
62
63 /* rename any peripherals used differing from the s3c2410 */
64
65 s3c_device_sdi.name = "s3c2440-sdi";
66 s3c_device_i2c0.name = "s3c2440-i2c";
67 s3c_nand_setname("s3c2440-nand");
68 s3c_device_ts.name = "s3c2440-ts";
69 s3c_device_usbgadget.name = "s3c2440-usbgadget";
70 s3c2410_device_dclk.name = "s3c2440-dclk";
71 }
72
73 /* Since the S3C2442 and S3C2440 share items, put both subsystems here */
74
75 struct bus_type s3c2440_subsys = {
76 .name = "s3c2440-core",
77 .dev_name = "s3c2440-core",
78 };
79
80 struct bus_type s3c2442_subsys = {
81 .name = "s3c2442-core",
82 .dev_name = "s3c2442-core",
83 };
84
85 /* need to register the subsystem before we actually register the device, and
86 * we also need to ensure that it has been initialised before any of the
87 * drivers even try to use it (even if not on an s3c2440 based system)
88 * as a driver which may support both 2410 and 2440 may try and use it.
89 */
90
s3c2440_core_init(void)91 static int __init s3c2440_core_init(void)
92 {
93 return subsys_system_register(&s3c2440_subsys, NULL);
94 }
95
96 core_initcall(s3c2440_core_init);
97
s3c2442_core_init(void)98 static int __init s3c2442_core_init(void)
99 {
100 return subsys_system_register(&s3c2442_subsys, NULL);
101 }
102
103 core_initcall(s3c2442_core_init);
104
105
106 #ifdef CONFIG_PM_SLEEP
107 static struct sleep_save s3c244x_sleep[] = {
108 SAVE_ITEM(S3C2440_DSC0),
109 SAVE_ITEM(S3C2440_DSC1),
110 SAVE_ITEM(S3C2440_GPJDAT),
111 SAVE_ITEM(S3C2440_GPJCON),
112 SAVE_ITEM(S3C2440_GPJUP)
113 };
114
s3c244x_suspend(void)115 static int s3c244x_suspend(void)
116 {
117 s3c_pm_do_save(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
118 return 0;
119 }
120
s3c244x_resume(void)121 static void s3c244x_resume(void)
122 {
123 s3c_pm_do_restore(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
124 }
125
126 struct syscore_ops s3c244x_pm_syscore_ops = {
127 .suspend = s3c244x_suspend,
128 .resume = s3c244x_resume,
129 };
130 #endif
131