| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 120 | static int s3c244x_suspend(void) |
| 121 | { |
| 122 | s3c_pm_do_save(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep)); |
| 123 | return 0; |
| 124 | } |
| 125 | |
| 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 |