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                 .virtual        = (unsigned long)S5P_VA_DMC0,
  90                 .pfn            = __phys_to_pfn(S5PV210_PA_DMC0),
  91                 .length         = SZ_4K,
  92                 .type           = MT_DEVICE,
  93         }, {
  94                 .virtual        = (unsigned long)S5P_VA_DMC1,
  95                 .pfn            = __phys_to_pfn(S5PV210_PA_DMC1),
  96                 .length         = SZ_4K,
  97                 .type           = MT_DEVICE,
  98         }, {
  99                 .virtual        = (unsigned long)S3C_VA_USB_HSPHY,
 100                 .pfn            =__phys_to_pfn(S5PV210_PA_HSPHY),
 101                 .length         = SZ_4K,
 102                 .type           = MT_DEVICE,
 103         }
 104 };
 105
 106 static void s5pv210_idle(void)
 107 {
 108         if (!need_resched())
 109                 cpu_do_idle();
 110
 111         local_irq_enable();
 112 }
 113
 114 static void s5pv210_sw_reset(void)
 115 {
 116         __raw_writel(0x1, S5P_SWRESET);
 117 }
 118
 119 /* s5pv210_map_io
 120  *
 121  * register the standard cpu IO areas
 122 */
 123
 124 void __init s5pv210_map_io(void)
 125 {
 126         iotable_init(s5pv210_iodesc, ARRAY_SIZE(s5pv210_iodesc));
 127
 128         /* initialise device information early */
 129         s5pv210_default_sdhci0();
 130         s5pv210_default_sdhci1();
 131         s5pv210_default_sdhci2();
 132         s5pv210_default_sdhci3();
 133
 134         s3c_adc_setname("s3c64xx-adc");
 135
 136         s3c_cfcon_setname("s5pv210-pata");
 137
 138         s3c_fimc_setname(0, "s5pv210-fimc");
 139         s3c_fimc_setname(1, "s5pv210-fimc");
 140         s3c_fimc_setname(2, "s5pv210-fimc");
 141
 142         /* the i2c devices are directly compatible with s3c2440 */
 143         s3c_i2c0_setname("s3c2440-i2c");
 144         s3c_i2c1_setname("s3c2440-i2c");
 145         s3c_i2c2_setname("s3c2440-i2c");
 146
 147         s3c_fb_setname("s5pv210-fb");
 148
 149         /* Use s5pv210-keypad instead of samsung-keypad */
 150         samsung_keypad_setname("s5pv210-keypad");
 151 }
 152
 153 void __init s5pv210_init_clocks(int xtal)
 154 {
 155         printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
 156
 157         s3c24xx_register_baseclocks(xtal);
 158         s5p_register_clocks(xtal);
 159         s5pv210_register_clocks();
 160         s5pv210_setup_clocks();
 161 }
 162
 163 void __init s5pv210_init_irq(void)
 164 {
 165         u32 vic[4];     /* S5PV210 supports 4 VIC */
 166
 167         /* All the VICs are fully populated. */
 168         vic[0] = ~0;
 169         vic[1] = ~0;
 170         vic[2] = ~0;
 171         vic[3] = ~0;
 172
 173         s5p_init_irq(vic, ARRAY_SIZE(vic));
 174 }
 175
 176 struct sysdev_class s5pv210_sysclass = {
 177         .name   = "s5pv210-core",
 178 };
 179
 180 static struct sys_device s5pv210_sysdev = {
 181         .cls    = &s5pv210_sysclass,
 182 };
 183
 184 static int __init s5pv210_core_init(void)
 185 {
 186         return sysdev_class_register(&s5pv210_sysclass);
 187 }
 188
 189 core_initcall(s5pv210_core_init);
 190
 191 int __init s5pv210_init(void)
 192 {
 193         printk(KERN_INFO "S5PV210: Initializing architecture\n");
 194
 195         /* set idle function */
 196         pm_idle = s5pv210_idle;
 197
 198         /* set sw_reset function */
 199         s5p_reset_hook = s5pv210_sw_reset;
 200
 201         return sysdev_register(&s5pv210_sysdev);
 202 }