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_DMC0,
  85                 .pfn            = __phys_to_pfn(S5PV210_PA_DMC0),
  86                 .length         = SZ_4K,
  87                 .type           = MT_DEVICE,
  88         }, {
  89                 .virtual        = (unsigned long)S5P_VA_DMC1,
  90                 .pfn            = __phys_to_pfn(S5PV210_PA_DMC1),
  91                 .length         = SZ_4K,
  92                 .type           = MT_DEVICE,
  93         }, {
  94                 .virtual        = (unsigned long)S3C_VA_USB_HSPHY,
  95                 .pfn            =__phys_to_pfn(S5PV210_PA_HSPHY),
  96                 .length         = SZ_4K,
  97                 .type           = MT_DEVICE,
  98         }
  99 };
 100
 101 static void s5pv210_idle(void)
 102 {
 103         if (!need_resched())
 104                 cpu_do_idle();
 105
 106         local_irq_enable();
 107 }
 108
 109 static void s5pv210_sw_reset(void)
 110 {
 111         __raw_writel(0x1, S5P_SWRESET);
 112 }
 113
 114 /* s5pv210_map_io
 115  *
 116  * register the standard cpu IO areas
 117 */
 118
 119 void __init s5pv210_map_io(void)
 120 {
 121         iotable_init(s5pv210_iodesc, ARRAY_SIZE(s5pv210_iodesc));
 122
 123         /* initialise device information early */
 124         s5pv210_default_sdhci0();
 125         s5pv210_default_sdhci1();
 126         s5pv210_default_sdhci2();
 127         s5pv210_default_sdhci3();
 128
 129         s3c_adc_setname("samsung-adc-v3");
 130
 131         s3c_cfcon_setname("s5pv210-pata");
 132
 133         s3c_fimc_setname(0, "s5pv210-fimc");
 134         s3c_fimc_setname(1, "s5pv210-fimc");
 135         s3c_fimc_setname(2, "s5pv210-fimc");
 136
 137         /* the i2c devices are directly compatible with s3c2440 */
 138         s3c_i2c0_setname("s3c2440-i2c");
 139         s3c_i2c1_setname("s3c2440-i2c");
 140         s3c_i2c2_setname("s3c2440-i2c");
 141
 142         s3c_fb_setname("s5pv210-fb");
 143
 144         /* Use s5pv210-keypad instead of samsung-keypad */
 145         samsung_keypad_setname("s5pv210-keypad");
 146 }
 147
 148 void __init s5pv210_init_clocks(int xtal)
 149 {
 150         printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
 151
 152         s3c24xx_register_baseclocks(xtal);
 153         s5p_register_clocks(xtal);
 154         s5pv210_register_clocks();
 155         s5pv210_setup_clocks();
 156 }
 157
 158 void __init s5pv210_init_irq(void)
 159 {
 160         u32 vic[4];     /* S5PV210 supports 4 VIC */
 161
 162         /* All the VICs are fully populated. */
 163         vic[0] = ~0;
 164         vic[1] = ~0;
 165         vic[2] = ~0;
 166         vic[3] = ~0;
 167
 168         s5p_init_irq(vic, ARRAY_SIZE(vic));
 169 }
 170
 171 struct sysdev_class s5pv210_sysclass = {
 172         .name   = "s5pv210-core",
 173 };
 174
 175 static struct sys_device s5pv210_sysdev = {
 176         .cls    = &s5pv210_sysclass,
 177 };
 178
 179 static int __init s5pv210_core_init(void)
 180 {
 181         return sysdev_class_register(&s5pv210_sysclass);
 182 }
 183
 184 core_initcall(s5pv210_core_init);
 185
 186 int __init s5pv210_init(void)
 187 {
 188         printk(KERN_INFO "S5PV210: Initializing architecture\n");
 189
 190         /* set idle function */
 191         pm_idle = s5pv210_idle;
 192
 193         /* set sw_reset function */
 194         s5p_reset_hook = s5pv210_sw_reset;
 195
 196         return sysdev_register(&s5pv210_sysdev);
 197 }