arch/arm/mach-s3c2416/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/sysdev.h>
  35 #include <linux/clk.h>
  36 #include <linux/io.h>
  37
  38 #include <asm/mach/arch.h>
  39 #include <asm/mach/map.h>
  40 #include <asm/mach/irq.h>
  41
  42 #include <mach/hardware.h>
  43 #include <asm/proc-fns.h>
  44 #include <asm/irq.h>
  45
  46 #include <mach/reset.h>
  47 #include <mach/idle.h>
  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
  57 #include <plat/iic-core.h>
  58 #include <plat/fb-core.h>
  59
  60 static struct map_desc s3c2416_iodesc[] __initdata = {
  61         IODESC_ENT(WATCHDOG),
  62         IODESC_ENT(CLKPWR),
  63         IODESC_ENT(TIMER),
  64 };
  65
  66 struct sysdev_class s3c2416_sysclass = {
  67         .name = "s3c2416-core",
  68 };
  69
  70 static struct sys_device s3c2416_sysdev = {
  71         .cls            = &s3c2416_sysclass,
  72 };
  73
  74 static void s3c2416_hard_reset(void)
  75 {
  76         __raw_writel(S3C2443_SWRST_RESET, S3C2443_SWRST);
  77 }
  78
  79 int __init s3c2416_init(void)
  80 {
  81         printk(KERN_INFO "S3C2416: Initializing architecture\n");
  82
  83         s3c24xx_reset_hook = s3c2416_hard_reset;
  84         /* s3c24xx_idle = s3c2416_idle; */
  85
  86         /* change WDT IRQ number */
  87         s3c_device_wdt.resource[1].start = IRQ_S3C2443_WDT;
  88         s3c_device_wdt.resource[1].end   = IRQ_S3C2443_WDT;
  89
  90         /* the i2c devices are directly compatible with s3c2440 */
  91         s3c_i2c0_setname("s3c2440-i2c");
  92         s3c_i2c1_setname("s3c2440-i2c");
  93
  94         s3c_fb_setname("s3c2443-fb");
  95
  96         return sysdev_register(&s3c2416_sysdev);
  97 }
  98
  99 void __init s3c2416_init_uarts(struct s3c2410_uartcfg *cfg, int no)
 100 {
 101         s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
 102
 103         s3c_device_nand.name = "s3c2416-nand";
 104 }
 105
 106 /* s3c2416_map_io
 107  *
 108  * register the standard cpu IO areas, and any passed in from the
 109  * machine specific initialisation.
 110  */
 111
 112 void __init s3c2416_map_io(void)
 113 {
 114         s3c24xx_gpiocfg_default.set_pull = s3c_gpio_setpull_updown;
 115         s3c24xx_gpiocfg_default.get_pull = s3c_gpio_getpull_updown;
 116
 117         iotable_init(s3c2416_iodesc, ARRAY_SIZE(s3c2416_iodesc));
 118 }
 119
 120 /* need to register class before we actually register the device, and
 121  * we also need to ensure that it has been initialised before any of the
 122  * drivers even try to use it (even if not on an s3c2416 based system)
 123  * as a driver which may support both 2443 and 2440 may try and use it.
 124 */
 125
 126 static int __init s3c2416_core_init(void)
 127 {
 128         return sysdev_class_register(&s3c2416_sysclass);
 129 }
 130
 131 core_initcall(s3c2416_core_init);