arch/arm/mach-s3c24xx/s3c2416.c

   1 /* linux/arch/arm/mach-s3c2416/s3c2416.c
   2  *
   3  * Copyright (c) 2009 Yauhen Kharuzhy <jekhor@gmail.com>,
   4  *      as part of OpenInkpot project
   5  * Copyright (c) 2009 Promwad Innovation Company
   6  *      Yauhen Kharuzhy <yauhen.kharuzhy@promwad.com>
   7  *
   8  * Samsung S3C2416 Mobile CPU support
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23 */
  24
  25 #include <linux/kernel.h>
  26 #include <linux/types.h>
  27 #include <linux/interrupt.h>
  28 #include <linux/list.h>
  29 #include <linux/timer.h>
  30 #include <linux/init.h>
  31 #include <linux/gpio.h>
  32 #include <linux/platform_device.h>
  33 #include <linux/serial_core.h>
  34 #include <linux/device.h>
  35 #include <linux/syscore_ops.h>
  36 #include <linux/clk.h>
  37 #include <linux/io.h>
  38
  39 #include <asm/mach/arch.h>
  40 #include <asm/mach/map.h>
  41 #include <asm/mach/irq.h>
  42
  43 #include <mach/hardware.h>
  44 #include <asm/proc-fns.h>
  45 #include <asm/irq.h>
  46 #include <asm/system_misc.h>
  47
  48 #include <mach/regs-s3c2443-clock.h>
  49
  50 #include <plat/gpio-core.h>
  51 #include <plat/gpio-cfg.h>
  52 #include <plat/gpio-cfg-helpers.h>
  53 #include <plat/s3c2416.h>
  54 #include <plat/devs.h>
  55 #include <plat/cpu.h>
  56 #include <plat/sdhci.h>
  57 #include <plat/pm.h>
  58
  59 #include <plat/iic-core.h>
  60 #include <plat/fb-core.h>
  61 #include <plat/nand-core.h>
  62 #include <plat/adc-core.h>
  63 #include <plat/rtc-core.h>
  64
  65 static struct map_desc s3c2416_iodesc[] __initdata = {
  66         IODESC_ENT(WATCHDOG),
  67         IODESC_ENT(CLKPWR),
  68         IODESC_ENT(TIMER),
  69 };
  70
  71 struct bus_type s3c2416_subsys = {
  72         .name = "s3c2416-core",
  73         .dev_name = "s3c2416-core",
  74 };
  75
  76 static struct device s3c2416_dev = {
  77         .bus            = &s3c2416_subsys,
  78 };
  79
  80 void s3c2416_restart(char mode, const char *cmd)
  81 {
  82         if (mode == 's')
  83                 soft_restart(0);
  84
  85         __raw_writel(S3C2443_SWRST_RESET, S3C2443_SWRST);
  86 }
  87
  88 int __init s3c2416_init(void)
  89 {
  90         printk(KERN_INFO "S3C2416: Initializing architecture\n");
  91
  92         /* change WDT IRQ number */
  93         s3c_device_wdt.resource[1].start = IRQ_S3C2443_WDT;
  94         s3c_device_wdt.resource[1].end   = IRQ_S3C2443_WDT;
  95
  96         /* the i2c devices are directly compatible with s3c2440 */
  97         s3c_i2c0_setname("s3c2440-i2c");
  98         s3c_i2c1_setname("s3c2440-i2c");
  99
 100         s3c_fb_setname("s3c2443-fb");
 101
 102         s3c_adc_setname("s3c2416-adc");
 103         s3c_rtc_setname("s3c2416-rtc");
 104
 105 #ifdef CONFIG_PM
 106         register_syscore_ops(&s3c2416_pm_syscore_ops);
 107 #endif
 108         register_syscore_ops(&s3c24xx_irq_syscore_ops);
 109
 110         return device_register(&s3c2416_dev);
 111 }
 112
 113 void __init s3c2416_init_uarts(struct s3c2410_uartcfg *cfg, int no)
 114 {
 115         s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
 116
 117         s3c_nand_setname("s3c2412-nand");
 118 }
 119
 120 /* s3c2416_map_io
 121  *
 122  * register the standard cpu IO areas, and any passed in from the
 123  * machine specific initialisation.
 124  */
 125
 126 void __init s3c2416_map_io(void)
 127 {
 128         s3c24xx_gpiocfg_default.set_pull = samsung_gpio_setpull_updown;
 129         s3c24xx_gpiocfg_default.get_pull = samsung_gpio_getpull_updown;
 130
 131         /* initialize device information early */
 132         s3c2416_default_sdhci0();
 133         s3c2416_default_sdhci1();
 134
 135         iotable_init(s3c2416_iodesc, ARRAY_SIZE(s3c2416_iodesc));
 136 }
 137
 138 /* need to register the subsystem before we actually register the device, and
 139  * we also need to ensure that it has been initialised before any of the
 140  * drivers even try to use it (even if not on an s3c2416 based system)
 141  * as a driver which may support both 2443 and 2440 may try and use it.
 142 */
 143
 144 static int __init s3c2416_core_init(void)
 145 {
 146         return subsys_system_register(&s3c2416_subsys, NULL);
 147 }
 148
 149 core_initcall(s3c2416_core_init);