git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 5f7f6a4a KK |
1 | /* linux/arch/arm/mach-s5p6442/cpu.c |
| 2 | * | |
| 3 | * Copyright (c) 2010 Samsung Electronics Co., Ltd. | |
| 4 | * http://www.samsung.com/ | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License version 2 as | |
| 8 | * published by the Free Software Foundation. | |
| 9 | */ | |
| 10 | ||
| 11 | #include <linux/kernel.h> | |
| 12 | #include <linux/types.h> | |
| 13 | #include <linux/interrupt.h> | |
| 14 | #include <linux/list.h> | |
| 15 | #include <linux/timer.h> | |
| 16 | #include <linux/init.h> | |
| 17 | #include <linux/clk.h> | |
| 18 | #include <linux/io.h> | |
| 19 | #include <linux/sysdev.h> | |
| 20 | #include <linux/serial_core.h> | |
| 21 | #include <linux/platform_device.h> | |
| 4341f9b3 | 22 | #include <linux/sched.h> |
| 5f7f6a4a KK |
23 | |
| 24 | #include <asm/mach/arch.h> | |
| 25 | #include <asm/mach/map.h> | |
| 26 | #include <asm/mach/irq.h> | |
| 27 | ||
| 28 | #include <asm/proc-fns.h> | |
| 29 | ||
| 30 | #include <mach/hardware.h> | |
| 31 | #include <mach/map.h> | |
| 32 | #include <asm/irq.h> | |
| 33 | ||
| 34 | #include <plat/regs-serial.h> | |
| 35 | #include <mach/regs-clock.h> | |
| 36 | ||
| 37 | #include <plat/cpu.h> | |
| 38 | #include <plat/devs.h> | |
| 39 | #include <plat/clock.h> | |
| 40 | #include <plat/s5p6442.h> | |
| 41 | ||
| 42 | /* Initial IO mappings */ | |
| 43 | ||
| 44 | static struct map_desc s5p6442_iodesc[] __initdata = { | |
| 45 | { | |
| 46 | .virtual = (unsigned long)S5P_VA_SYSTIMER, | |
| 47 | .pfn = __phys_to_pfn(S5P6442_PA_SYSTIMER), | |
| 48 | .length = SZ_16K, | |
| 49 | .type = MT_DEVICE, | |
| 50 | }, { | |
| 51 | .virtual = (unsigned long)VA_VIC2, | |
| 52 | .pfn = __phys_to_pfn(S5P6442_PA_VIC2), | |
| 53 | .length = SZ_16K, | |
| 54 | .type = MT_DEVICE, | |
| 55 | } | |
| 56 | }; | |
| 57 | ||
| 58 | static void s5p6442_idle(void) | |
| 59 | { | |
| 60 | if (!need_resched()) | |
| 61 | cpu_do_idle(); | |
| 62 | ||
| 63 | local_irq_enable(); | |
| 64 | } | |
| 65 | ||
| 66 | /* s5p6442_map_io | |
| 67 | * | |
| 68 | * register the standard cpu IO areas | |
| 69 | */ | |
| 70 | ||
| 71 | void __init s5p6442_map_io(void) | |
| 72 | { | |
| 73 | iotable_init(s5p6442_iodesc, ARRAY_SIZE(s5p6442_iodesc)); | |
| 74 | } | |
| 75 | ||
| 76 | void __init s5p6442_init_clocks(int xtal) | |
| 77 | { | |
| 78 | printk(KERN_DEBUG "%s: initializing clocks\n", __func__); | |
| 79 | ||
| 80 | s3c24xx_register_baseclocks(xtal); | |
| 81 | s5p_register_clocks(xtal); | |
| 82 | s5p6442_register_clocks(); | |
| 83 | s5p6442_setup_clocks(); | |
| 84 | } | |
| 85 | ||
| 86 | void __init s5p6442_init_irq(void) | |
| 87 | { | |
| 88 | /* S5P6442 supports 3 VIC */ | |
| 89 | u32 vic[3]; | |
| 90 | ||
| 91 | /* VIC0, VIC1, and VIC2: some interrupt reserved */ | |
| 92 | vic[0] = 0x7fefffff; | |
| 93 | vic[1] = 0X7f389c81; | |
| 94 | vic[2] = 0X1bbbcfff; | |
| 95 | ||
| 96 | s5p_init_irq(vic, ARRAY_SIZE(vic)); | |
| 97 | } | |
| 98 | ||
| 0ad73cef | 99 | struct sysdev_class s5p6442_sysclass = { |
| 5f7f6a4a KK |
100 | .name = "s5p6442-core", |
| 101 | }; | |
| 102 | ||
| 103 | static struct sys_device s5p6442_sysdev = { | |
| 104 | .cls = &s5p6442_sysclass, | |
| 105 | }; | |
| 106 | ||
| 107 | static int __init s5p6442_core_init(void) | |
| 108 | { | |
| 109 | return sysdev_class_register(&s5p6442_sysclass); | |
| 110 | } | |
| 111 | ||
| 112 | core_initcall(s5p6442_core_init); | |
| 113 | ||
| 114 | int __init s5p6442_init(void) | |
| 115 | { | |
| 116 | printk(KERN_INFO "S5P6442: Initializing architecture\n"); | |
| 117 | ||
| 118 | /* set idle function */ | |
| 119 | pm_idle = s5p6442_idle; | |
| 120 | ||
| 121 | return sysdev_register(&s5p6442_sysdev); | |
| 122 | } |