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 #include <plat/tv-core.h>
  45
  46 /* Initial IO mappings */
  47
  48 static struct map_desc s5pv210_iodesc[] __initdata = {
  49         {
  50                 .virtual        = (unsigned long)S5P_VA_SYSTIMER,
  51                 .pfn            = __phys_to_pfn(S5PV210_PA_SYSTIMER),
  52                 .length         = SZ_4K,
  53                 .type           = MT_DEVICE,
  54         }, {
  55                 .virtual        = (unsigned long)S5P_VA_GPIO,
  56                 .pfn            = __phys_to_pfn(S5PV210_PA_GPIO),
  57                 .length         = SZ_4K,
  58                 .type           = MT_DEVICE,
  59         }, {
  60                 .virtual        = (unsigned long)VA_VIC0,
  61                 .pfn            = __phys_to_pfn(S5PV210_PA_VIC0),
  62                 .length         = SZ_16K,
  63                 .type           = MT_DEVICE,
  64         }, {
  65                 .virtual        = (unsigned long)VA_VIC1,
  66                 .pfn            = __phys_to_pfn(S5PV210_PA_VIC1),
  67                 .length         = SZ_16K,
  68                 .type           = MT_DEVICE,
  69         }, {
  70                 .virtual        = (unsigned long)VA_VIC2,
  71                 .pfn            = __phys_to_pfn(S5PV210_PA_VIC2),
  72                 .length         = SZ_16K,
  73                 .type           = MT_DEVICE,
  74         }, {
  75                 .virtual        = (unsigned long)VA_VIC3,
  76                 .pfn            = __phys_to_pfn(S5PV210_PA_VIC3),
  77                 .length         = SZ_16K,
  78                 .type           = MT_DEVICE,
  79         }, {
  80                 .virtual        = (unsigned long)S3C_VA_UART,
  81                 .pfn            = __phys_to_pfn(S3C_PA_UART),
  82                 .length         = SZ_512K,
  83                 .type           = MT_DEVICE,
  84         }, {
  85                 .virtual        = (unsigned long)S5P_VA_DMC0,
  86                 .pfn            = __phys_to_pfn(S5PV210_PA_DMC0),
  87                 .length         = SZ_4K,
  88                 .type           = MT_DEVICE,
  89         }, {
  90                 .virtual        = (unsigned long)S5P_VA_DMC1,
  91                 .pfn            = __phys_to_pfn(S5PV210_PA_DMC1),
  92                 .length         = SZ_4K,
  93                 .type           = MT_DEVICE,
  94         }, {
  95                 .virtual        = (unsigned long)S3C_VA_USB_HSPHY,
  96                 .pfn            =__phys_to_pfn(S5PV210_PA_HSPHY),
  97                 .length         = SZ_4K,
  98                 .type           = MT_DEVICE,
  99         }
 100 };
 101
 102 static void s5pv210_idle(void)
 103 {
 104         if (!need_resched())
 105                 cpu_do_idle();
 106
 107         local_irq_enable();
 108 }
 109
 110 static void s5pv210_sw_reset(void)
 111 {
 112         __raw_writel(0x1, S5P_SWRESET);
 113 }
 114
 115 /* s5pv210_map_io
 116  *
 117  * register the standard cpu IO areas
 118 */
 119
 120 void __init s5pv210_map_io(void)
 121 {
 122         iotable_init(s5pv210_iodesc, ARRAY_SIZE(s5pv210_iodesc));
 123
 124         /* initialise device information early */
 125         s5pv210_default_sdhci0();
 126         s5pv210_default_sdhci1();
 127         s5pv210_default_sdhci2();
 128         s5pv210_default_sdhci3();
 129
 130         s3c_adc_setname("samsung-adc-v3");
 131
 132         s3c_cfcon_setname("s5pv210-pata");
 133
 134         s3c_fimc_setname(0, "s5pv210-fimc");
 135         s3c_fimc_setname(1, "s5pv210-fimc");
 136         s3c_fimc_setname(2, "s5pv210-fimc");
 137
 138         /* the i2c devices are directly compatible with s3c2440 */
 139         s3c_i2c0_setname("s3c2440-i2c");
 140         s3c_i2c1_setname("s3c2440-i2c");
 141         s3c_i2c2_setname("s3c2440-i2c");
 142
 143         s3c_fb_setname("s5pv210-fb");
 144
 145         /* Use s5pv210-keypad instead of samsung-keypad */
 146         samsung_keypad_setname("s5pv210-keypad");
 147
 148         /* setup TV devices */
 149         s5p_hdmi_setname("s5pv210-hdmi");
 150 }
 151
 152 void __init s5pv210_init_clocks(int xtal)
 153 {
 154         printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
 155
 156         s3c24xx_register_baseclocks(xtal);
 157         s5p_register_clocks(xtal);
 158         s5pv210_register_clocks();
 159         s5pv210_setup_clocks();
 160 }
 161
 162 void __init s5pv210_init_irq(void)
 163 {
 164         u32 vic[4];     /* S5PV210 supports 4 VIC */
 165
 166         /* All the VICs are fully populated. */
 167         vic[0] = ~0;
 168         vic[1] = ~0;
 169         vic[2] = ~0;
 170         vic[3] = ~0;
 171
 172         s5p_init_irq(vic, ARRAY_SIZE(vic));
 173 }
 174
 175 struct sysdev_class s5pv210_sysclass = {
 176         .name   = "s5pv210-core",
 177 };
 178
 179 static struct sys_device s5pv210_sysdev = {
 180         .cls    = &s5pv210_sysclass,
 181 };
 182
 183 static int __init s5pv210_core_init(void)
 184 {
 185         return sysdev_class_register(&s5pv210_sysclass);
 186 }
 187
 188 core_initcall(s5pv210_core_init);
 189
 190 int __init s5pv210_init(void)
 191 {
 192         printk(KERN_INFO "S5PV210: Initializing architecture\n");
 193
 194         /* set idle function */
 195         pm_idle = s5pv210_idle;
 196
 197         /* set sw_reset function */
 198         s5p_reset_hook = s5pv210_sw_reset;
 199
 200         return sysdev_register(&s5pv210_sysdev);
 201 }