arch/arm/mach-s3c24xx/simtec-pm.c

   1 /* linux/arch/arm/plat-s3c24xx/pm-simtec.c
   2  *
   3  * Copyright 2004 Simtec Electronics
   4  *      Ben Dooks <ben@simtec.co.uk>
   5  *
   6  * http://armlinux.simtec.co.uk/
   7  *
   8  * Power Management helpers for Simtec S3C24XX implementations
   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 version 2 as
  12  * published by the Free Software Foundation.
  13 */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/types.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/list.h>
  19 #include <linux/timer.h>
  20 #include <linux/init.h>
  21 #include <linux/device.h>
  22 #include <linux/io.h>
  23
  24 #include <asm/mach/arch.h>
  25 #include <asm/mach/map.h>
  26
  27 #include <mach/hardware.h>
  28
  29 #include <mach/map.h>
  30 #include <mach/regs-gpio.h>
  31
  32 #include <asm/mach-types.h>
  33
  34 #include <plat/pm.h>
  35
  36 #include "regs-mem.h"
  37
  38 #define COPYRIGHT ", Copyright 2005 Simtec Electronics"
  39
  40 /* pm_simtec_init
  41  *
  42  * enable the power management functions
  43 */
  44
  45 static __init int pm_simtec_init(void)
  46 {
  47         unsigned long gstatus4;
  48
  49         /* check which machine we are running on */
  50
  51         if (!machine_is_bast() && !machine_is_vr1000() &&
  52             !machine_is_anubis() && !machine_is_osiris() &&
  53             !machine_is_aml_m5900())
  54                 return 0;
  55
  56         printk(KERN_INFO "Simtec Board Power Management" COPYRIGHT "\n");
  57
  58         gstatus4  = (__raw_readl(S3C2410_BANKCON7) & 0x3) << 30;
  59         gstatus4 |= (__raw_readl(S3C2410_BANKCON6) & 0x3) << 28;
  60         gstatus4 |= (__raw_readl(S3C2410_BANKSIZE) & S3C2410_BANKSIZE_MASK);
  61
  62         __raw_writel(gstatus4, S3C2410_GSTATUS4);
  63
  64         return s3c_pm_init();
  65 }
  66
  67 arch_initcall(pm_simtec_init);