release/src-rt-6.x/linux/linux-2.6/arch/arm/mach-omap2/prcm.c

   1 /*
   2  * linux/arch/arm/mach-omap2/prcm.c
   3  *
   4  * OMAP 24xx Power Reset and Clock Management (PRCM) functions
   5  *
   6  * Copyright (C) 2005 Nokia Corporation
   7  *
   8  * Written by Tony Lindgren <tony.lindgren@nokia.com>
   9  *
  10  * Some pieces of code Copyright (C) 2005 Texas Instruments, Inc.
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License version 2 as
  14  * published by the Free Software Foundation.
  15  */
  16 #include <linux/module.h>
  17 #include <linux/init.h>
  18 #include <linux/clk.h>
  19
  20 #include "prcm-regs.h"
  21
  22 extern void omap2_clk_prepare_for_reboot(void);
  23
  24 u32 omap_prcm_get_reset_sources(void)
  25 {
  26         return RM_RSTST_WKUP & 0x7f;
  27 }
  28 EXPORT_SYMBOL(omap_prcm_get_reset_sources);
  29
  30 /* Resets clock rates and reboots the system. Only called from system.h */
  31 void omap_prcm_arch_reset(char mode)
  32 {
  33         omap2_clk_prepare_for_reboot();
  34         RM_RSTCTRL_WKUP |= 2;
  35 }