arch/arm/mach-s5pv210/cpu.c

   1 /* linux/arch/arm/mach-s5pv210/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/module.h>
  18 #include <linux/clk.h>
  19 #include <linux/io.h>
  20 #include <linux/sysdev.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/sched.h>
  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 #include <mach/map.h>
  30 #include <mach/regs-clock.h>
  31
  32 #include <plat/cpu.h>
  33 #include <plat/devs.h>
  34 #include <plat/clock.h>
  35 #include <plat/fb-core.h>
  36 #include <plat/s5pv210.h>
  37 #include <plat/adc-core.h>
  38 #include <plat/ata-core.h>
  39 #include <plat/fimc-core.h>
  40 #include <plat/iic-core.h>
  41 #include <plat/keypad-core.h>
  42 #include <plat/sdhci.h>
  43 #include <plat/reset.h>
  44
  45 /* Initial IO mappings */
  46
  47 static struct map_desc s5pv210_iodesc[] __initdata = {
  48         {
  49                 .virtual        = (unsigned long)S5P_VA_SYSTIMER,
  50                 .pfn            = __phys_to_pfn(S5PV210_PA_SYSTIMER),
  51                 .length         = SZ_4K,
  52                 .type           = MT_DEVICE,
  53         }, {
  54                 .virtual        = (unsigned long)S5P_VA_GPIO,
  55                 .pfn            = __phys_to_pfn(S5PV210_PA_GPIO),
  56                 .length         = SZ_4K,
  57                 .type           = MT_DEVICE,
  58         }, {
  59                 .virtual        = (unsigned long)VA_VIC0,
  60                 .pfn            = __phys_to_pfn(S5PV210_PA_VIC0),
  61                 .length         = SZ_16K,
  62                 .type           = MT_DEVICE,
  63         }, {
  64                 .virtual        = (unsigned long)VA_VIC1,
  65                 .pfn            = __phys_to_pfn(S5PV210_PA_VIC1),
  66                 .length         = SZ_16K,
  67                 .type           = MT_DEVICE,
  68         }, {
  69                 .virtual        = (unsigned long)VA_VIC2,
  70                 .pfn            = __phys_to_pfn(S5PV210_PA_VIC2),
  71                 .length         = SZ_16K,
  72                 .type           = MT_DEVICE,
  73         }, {
  74                 .virtual        = (unsigned long)VA_VIC3,
  75                 .pfn            = __phys_to_pfn(S5PV210_PA_VIC3),
  76                 .length         = SZ_16K,
  77                 .type           = MT_DEVICE,
  78         }, {
  79                 .virtual        = (unsigned long)S3C_VA_UART,
  80                 .pfn            = __phys_to_pfn(S3C_PA_UART),
  81                 .length         = SZ_512K,
  82                 .type           = MT_DEVICE,
  83         }, {
  84                 .virtual        = (unsigned long)S5P_VA_SROMC,
  85                 .pfn            = __phys_to_pfn(S5PV210_PA_SROMC),
  86                 .length         = SZ_4K,
  87                 .type           = MT_DEVICE,
  88         }
  89 };
  90
  91 static void s5pv210_idle(void)
  92 {
  93         if (!need_resched())
  94                 cpu_do_idle();
  95
  96         local_irq_enable();
  97 }
  98
  99 static void s5pv210_sw_reset(void)
 100 {
 101         __raw_writel(0x1, S5P_SWRESET);
 102 }
 103
 104 /* s5pv210_map_io
 105  *
 106  * register the standard cpu IO areas
 107 */
 108
 109 void __init s5pv210_map_io(void)
 110 {
 111         iotable_init(s5pv210_iodesc, ARRAY_SIZE(s5pv210_iodesc));
 112
 113         /* initialise device information early */
 114         s5pv210_default_sdhci0();
 115         s5pv210_default_sdhci1();
 116         s5pv210_default_sdhci2();
 117         s5pv210_default_sdhci3();
 118
 119         s3c_adc_setname("s3c64xx-adc");
 120
 121         s3c_cfcon_setname("s5pv210-pata");
 122
 123         s3c_fimc_setname(0, "s5pv210-fimc");
 124         s3c_fimc_setname(1, "s5pv210-fimc");
 125         s3c_fimc_setname(2, "s5pv210-fimc");
 126
 127         /* the i2c devices are directly compatible with s3c2440 */
 128         s3c_i2c0_setname("s3c2440-i2c");
 129         s3c_i2c1_setname("s3c2440-i2c");
 130         s3c_i2c2_setname("s3c2440-i2c");
 131
 132         s3c_fb_setname("s5pv210-fb");
 133
 134         /* Use s5pv210-keypad instead of samsung-keypad */
 135         samsung_keypad_setname("s5pv210-keypad");
 136 }
 137
 138 void __init s5pv210_init_clocks(int xtal)
 139 {
 140         printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
 141
 142         s3c24xx_register_baseclocks(xtal);
 143         s5p_register_clocks(xtal);
 144         s5pv210_register_clocks();
 145         s5pv210_setup_clocks();
 146 }
 147
 148 void __init s5pv210_init_irq(void)
 149 {
 150         u32 vic[4];     /* S5PV210 supports 4 VIC */
 151
 152         /* All the VICs are fully populated. */
 153         vic[0] = ~0;
 154         vic[1] = ~0;
 155         vic[2] = ~0;
 156         vic[3] = ~0;
 157
 158         s5p_init_irq(vic, ARRAY_SIZE(vic));
 159 }
 160
 161 struct sysdev_class s5pv210_sysclass = {
 162         .name   = "s5pv210-core",
 163 };
 164
 165 static struct sys_device s5pv210_sysdev = {
 166         .cls    = &s5pv210_sysclass,
 167 };
 168
 169 static int __init s5pv210_core_init(void)
 170 {
 171         return sysdev_class_register(&s5pv210_sysclass);
 172 }
 173
 174 core_initcall(s5pv210_core_init);
 175
 176 int __init s5pv210_init(void)
 177 {
 178         printk(KERN_INFO "S5PV210: Initializing architecture\n");
 179
 180         /* set idle function */
 181         pm_idle = s5pv210_idle;
 182
 183         /* set sw_reset function */
 184         s5p_reset_hook = s5pv210_sw_reset;
 185
 186         return sysdev_register(&s5pv210_sysdev);
 187 }