LXR linux/drivers/ps3/sys-manager-core.c

   1/*
   2 *  PS3 System Manager core.
   3 *
   4 *  Copyright (C) 2007 Sony Computer Entertainment Inc.
   5 *  Copyright 2007 Sony Corp.
   6 *
   7 *  This program is free software; you can redistribute it and/or modify
   8 *  it under the terms of the GNU General Public License as published by
   9 *  the Free Software Foundation; version 2 of the License.
  10 *
  11 *  This program is distributed in the hope that it will be useful,
  12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 *  GNU General Public License for more details.
  15 *
  16 *  You should have received a copy of the GNU General Public License
  17 *  along with this program; if not, write to the Free Software
  18 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 */
  20
  21#include <linux/kernel.h>
  22#include <asm/lv1call.h>
  23#include <asm/ps3.h>
  24
  25/**
  26 * Staticly linked routines that allow late binding of a loaded sys-manager
  27 * module.
  28 */
  29
  30static struct ps3_sys_manager_ops ps3_sys_manager_ops;
  31
  32/**
  33 * ps3_register_sys_manager_ops - Bind ps3_sys_manager_ops to a module.
  34 * @ops: struct ps3_sys_manager_ops.
  35 *
  36 * To be called from ps3_sys_manager_probe() and ps3_sys_manager_remove() to
  37 * register call back ops for power control.  Copies data to the static
  38 * variable ps3_sys_manager_ops.
  39 */
  40
  41void ps3_sys_manager_register_ops(const struct ps3_sys_manager_ops *ops)
  42{
  43        BUG_ON(!ops);
  44        BUG_ON(!ops->dev);
  45        ps3_sys_manager_ops = ops ? *ops : ps3_sys_manager_ops;
  46}
  47EXPORT_SYMBOL_GPL(ps3_sys_manager_register_ops);
  48
  49void ps3_sys_manager_power_off(void)
  50{
  51        if (ps3_sys_manager_ops.power_off)
  52                ps3_sys_manager_ops.power_off(ps3_sys_manager_ops.dev);
  53
  54        ps3_sys_manager_halt();
  55}
  56
  57void ps3_sys_manager_restart(void)
  58{
  59        if (ps3_sys_manager_ops.restart)
  60                ps3_sys_manager_ops.restart(ps3_sys_manager_ops.dev);
  61
  62        ps3_sys_manager_halt();
  63}
  64
  65void ps3_sys_manager_halt(void)
  66{
  67        pr_emerg("System Halted, OK to turn off power\n");
  68        local_irq_disable();
  69        while (1)
  70                lv1_pause(1);
  71}
  72
  73