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 #include <plat/tv-core.h>
  46
  47 /* Initial IO mappings */
  48
  49 static struct map_desc s5pv210_iodesc[] __initdata = {
  50         {
  51                 .virtual        = (unsigned long)S5P_VA_SYSTIMER,
  52                 .pfn            = __phys_to_pfn(S5PV210_PA_SYSTIMER),
  53                 .length         = SZ_4K,
  54                 .type           = MT_DEVICE,
  55         }, {
  56                 .virtual        = (unsigned long)S5P_VA_GPIO,
  57                 .pfn            = __phys_to_pfn(S5PV210_PA_GPIO),
  58                 .length         = SZ_4K,
  59                 .type           = MT_DEVICE,
  60         }, {
  61                 .virtual        = (unsigned long)VA_VIC0,
  62                 .pfn            = __phys_to_pfn(S5PV210_PA_VIC0),
  63                 .length         = SZ_16K,
  64                 .type           = MT_DEVICE,
  65         }, {
  66                 .virtual        = (unsigned long)VA_VIC1,
  67                 .pfn            = __phys_to_pfn(S5PV210_PA_VIC1),
  68                 .length         = SZ_16K,
  69                 .type           = MT_DEVICE,
  70         }, {
  71                 .virtual        = (unsigned long)VA_VIC2,
  72                 .pfn            = __phys_to_pfn(S5PV210_PA_VIC2),
  73                 .length         = SZ_16K,
  74                 .type           = MT_DEVICE,
  75         }, {
  76                 .virtual        = (unsigned long)VA_VIC3,
  77                 .pfn            = __phys_to_pfn(S5PV210_PA_VIC3),
  78                 .length         = SZ_16K,
  79                 .type           = MT_DEVICE,
  80         }, {
  81                 .virtual        = (unsigned long)S3C_VA_UART,
  82                 .pfn            = __phys_to_pfn(S3C_PA_UART),
  83                 .length         = SZ_512K,
  84                 .type           = MT_DEVICE,
  85         }, {
  86                 .virtual        = (unsigned long)S5P_VA_DMC0,
  87                 .pfn            = __phys_to_pfn(S5PV210_PA_DMC0),
  88                 .length         = SZ_4K,
  89                 .type           = MT_DEVICE,
  90         }, {
  91                 .virtual        = (unsigned long)S5P_VA_DMC1,
  92                 .pfn            = __phys_to_pfn(S5PV210_PA_DMC1),
  93                 .length         = SZ_4K,
  94                 .type           = MT_DEVICE,
  95         }, {
  96                 .virtual        = (unsigned long)S3C_VA_USB_HSPHY,
  97                 .pfn            =__phys_to_pfn(S5PV210_PA_HSPHY),
  98                 .length         = SZ_4K,
  99                 .type           = MT_DEVICE,
 100         }
 101 };
 102
 103 static void s5pv210_idle(void)
 104 {
 105         if (!need_resched())
 106                 cpu_do_idle();
 107
 108         local_irq_enable();
 109 }
 110
 111 static void s5pv210_sw_reset(void)
 112 {
 113         __raw_writel(0x1, S5P_SWRESET);
 114 }
 115
 116 /* s5pv210_map_io
 117  *
 118  * register the standard cpu IO areas
 119 */
 120
 121 void __init s5pv210_map_io(void)
 122 {
 123         iotable_init(s5pv210_iodesc, ARRAY_SIZE(s5pv210_iodesc));
 124         init_consistent_dma_size(14 << 20);
 125
 126         /* initialise device information early */
 127         s5pv210_default_sdhci0();
 128         s5pv210_default_sdhci1();
 129         s5pv210_default_sdhci2();
 130         s5pv210_default_sdhci3();
 131
 132         s3c_adc_setname("samsung-adc-v3");
 133
 134         s3c_cfcon_setname("s5pv210-pata");
 135
 136         s3c_fimc_setname(0, "s5pv210-fimc");
 137         s3c_fimc_setname(1, "s5pv210-fimc");
 138         s3c_fimc_setname(2, "s5pv210-fimc");
 139
 140         /* the i2c devices are directly compatible with s3c2440 */
 141         s3c_i2c0_setname("s3c2440-i2c");
 142         s3c_i2c1_setname("s3c2440-i2c");
 143         s3c_i2c2_setname("s3c2440-i2c");
 144
 145         s3c_fb_setname("s5pv210-fb");
 146
 147         /* Use s5pv210-keypad instead of samsung-keypad */
 148         samsung_keypad_setname("s5pv210-keypad");
 149
 150         /* setup TV devices */
 151         s5p_hdmi_setname("s5pv210-hdmi");
 152 }
 153
 154 void __init s5pv210_init_clocks(int xtal)
 155 {
 156         printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
 157
 158         s3c24xx_register_baseclocks(xtal);
 159         s5p_register_clocks(xtal);
 160         s5pv210_register_clocks();
 161         s5pv210_setup_clocks();
 162 }
 163
 164 void __init s5pv210_init_irq(void)
 165 {
 166         u32 vic[4];     /* S5PV210 supports 4 VIC */
 167
 168         /* All the VICs are fully populated. */
 169         vic[0] = ~0;
 170         vic[1] = ~0;
 171         vic[2] = ~0;
 172         vic[3] = ~0;
 173
 174         s5p_init_irq(vic, ARRAY_SIZE(vic));
 175 }
 176
 177 struct sysdev_class s5pv210_sysclass = {
 178         .name   = "s5pv210-core",
 179 };
 180
 181 static struct sys_device s5pv210_sysdev = {
 182         .cls    = &s5pv210_sysclass,
 183 };
 184
 185 static int __init s5pv210_core_init(void)
 186 {
 187         return sysdev_class_register(&s5pv210_sysclass);
 188 }
 189
 190 core_initcall(s5pv210_core_init);
 191
 192 int __init s5pv210_init(void)
 193 {
 194         printk(KERN_INFO "S5PV210: Initializing architecture\n");
 195
 196         /* set idle function */
 197         pm_idle = s5pv210_idle;
 198
 199         /* set sw_reset function */
 200         s5p_reset_hook = s5pv210_sw_reset;
 201
 202         return sysdev_register(&s5pv210_sysdev);
 203 }