1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // Copyright (c) 2007 Simtec Electronics
4 // Ben Dooks <ben@simtec.co.uk>
5 //
6 // Samsung S3C2443 Mobile CPU support
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/gpio.h>
15 #include <linux/platform_device.h>
16 #include <linux/serial_core.h>
17 #include <linux/device.h>
18 #include <linux/clk.h>
19 #include <linux/io.h>
20 #include <linux/reboot.h>
21
22 #include <asm/mach/arch.h>
23 #include <asm/mach/map.h>
24 #include <asm/mach/irq.h>
25
26 #include "map.h"
27 #include "gpio-samsung.h"
28 #include <mach/irqs.h>
29 #include <asm/irq.h>
30 #include <asm/system_misc.h>
31
32 #include "regs-s3c2443-clock.h"
33 #include "rtc-core-s3c24xx.h"
34
35 #include "gpio-core.h"
36 #include "gpio-cfg.h"
37 #include "gpio-cfg-helpers.h"
38 #include "devs.h"
39 #include "cpu.h"
40 #include "adc-core.h"
41
42 #include "s3c24xx.h"
43 #include "fb-core-s3c24xx.h"
44 #include "nand-core-s3c24xx.h"
45 #include "spi-core-s3c24xx.h"
46
47 static struct map_desc s3c2443_iodesc[] __initdata __maybe_unused = {
48 IODESC_ENT(WATCHDOG),
49 IODESC_ENT(CLKPWR),
50 IODESC_ENT(TIMER),
51 };
52
53 struct bus_type s3c2443_subsys = {
54 .name = "s3c2443-core",
55 .dev_name = "s3c2443-core",
56 };
57
58 static struct device s3c2443_dev = {
59 .bus = &s3c2443_subsys,
60 };
61
s3c2443_init(void)62 int __init s3c2443_init(void)
63 {
64 printk("S3C2443: Initialising architecture\n");
65
66 s3c_nand_setname("s3c2412-nand");
67 s3c_fb_setname("s3c2443-fb");
68
69 s3c_adc_setname("s3c2443-adc");
70 s3c_rtc_setname("s3c2443-rtc");
71
72 /* change WDT IRQ number */
73 s3c_device_wdt.resource[1].start = IRQ_S3C2443_WDT;
74 s3c_device_wdt.resource[1].end = IRQ_S3C2443_WDT;
75
76 return device_register(&s3c2443_dev);
77 }
78
s3c2443_init_uarts(struct s3c2410_uartcfg * cfg,int no)79 void __init s3c2443_init_uarts(struct s3c2410_uartcfg *cfg, int no)
80 {
81 s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
82 }
83
84 /* s3c2443_map_io
85 *
86 * register the standard cpu IO areas, and any passed in from the
87 * machine specific initialisation.
88 */
89
s3c2443_map_io(void)90 void __init s3c2443_map_io(void)
91 {
92 s3c24xx_gpiocfg_default.set_pull = s3c2443_gpio_setpull;
93 s3c24xx_gpiocfg_default.get_pull = s3c2443_gpio_getpull;
94
95 /* initialize device information early */
96 s3c24xx_spi_setname("s3c2443-spi");
97
98 iotable_init(s3c2443_iodesc, ARRAY_SIZE(s3c2443_iodesc));
99 }
100
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 s3c2443 based system)
104 * as a driver which may support both 2443 and 2440 may try and use it.
105 */
106
s3c2443_core_init(void)107 static int __init s3c2443_core_init(void)
108 {
109 return subsys_system_register(&s3c2443_subsys, NULL);
110 }
111
112 core_initcall(s3c2443_core_init);
113