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 #include <linux/dma-mapping.h>
  24
  25 #include <asm/mach/arch.h>
  26 #include <asm/mach/map.h>
  27 #include <asm/mach/irq.h>
  28
  29 #include <asm/proc-fns.h>
  30 #include <mach/map.h>
  31 #include <mach/regs-clock.h>
  32
  33 #include <plat/cpu.h>
  34 #include <plat/devs.h>
  35 #include <plat/clock.h>
  36 #include <plat/fb-core.h>
  37 #include <plat/s5pv210.h>
  38 #include <plat/adc-core.h>
  39 #include <plat/ata-core.h>
  40 #include <plat/fimc-core.h>
  41 #include <plat/iic-core.h>
  42 #include <plat/keypad-core.h>
  43 #include <plat/sdhci.h>
  44 #include <plat/reset.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         init_consistent_dma_size(14 << 20);
 124
 125         /* initialise device information early */
 126         s5pv210_default_sdhci0();
 127         s5pv210_default_sdhci1();
 128         s5pv210_default_sdhci2();
 129         s5pv210_default_sdhci3();
 130
 131         s3c_adc_setname("samsung-adc-v3");
 132
 133         s3c_cfcon_setname("s5pv210-pata");
 134
 135         s3c_fimc_setname(0, "s5pv210-fimc");
 136         s3c_fimc_setname(1, "s5pv210-fimc");
 137         s3c_fimc_setname(2, "s5pv210-fimc");
 138
 139         /* the i2c devices are directly compatible with s3c2440 */
 140         s3c_i2c0_setname("s3c2440-i2c");
 141         s3c_i2c1_setname("s3c2440-i2c");
 142         s3c_i2c2_setname("s3c2440-i2c");
 143
 144         s3c_fb_setname("s5pv210-fb");
 145
 146         /* Use s5pv210-keypad instead of samsung-keypad */
 147         samsung_keypad_setname("s5pv210-keypad");
 148 }
 149
 150 void __init s5pv210_init_clocks(int xtal)
 151 {
 152         printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
 153
 154         s3c24xx_register_baseclocks(xtal);
 155         s5p_register_clocks(xtal);
 156         s5pv210_register_clocks();
 157         s5pv210_setup_clocks();
 158 }
 159
 160 void __init s5pv210_init_irq(void)
 161 {
 162         u32 vic[4];     /* S5PV210 supports 4 VIC */
 163
 164         /* All the VICs are fully populated. */
 165         vic[0] = ~0;
 166         vic[1] = ~0;
 167         vic[2] = ~0;
 168         vic[3] = ~0;
 169
 170         s5p_init_irq(vic, ARRAY_SIZE(vic));
 171 }
 172
 173 struct sysdev_class s5pv210_sysclass = {
 174         .name   = "s5pv210-core",
 175 };
 176
 177 static struct sys_device s5pv210_sysdev = {
 178         .cls    = &s5pv210_sysclass,
 179 };
 180
 181 static int __init s5pv210_core_init(void)
 182 {
 183         return sysdev_class_register(&s5pv210_sysclass);
 184 }
 185
 186 core_initcall(s5pv210_core_init);
 187
 188 int __init s5pv210_init(void)
 189 {
 190         printk(KERN_INFO "S5PV210: Initializing architecture\n");
 191
 192         /* set idle function */
 193         pm_idle = s5pv210_idle;
 194
 195         /* set sw_reset function */
 196         s5p_reset_hook = s5pv210_sw_reset;
 197
 198         return sysdev_register(&s5pv210_sysdev);
 199 }