release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/staging/rtl8192su/r8192U_pm.c

   1 /*
   2    Power management interface routines.
   3    Written by Mariusz Matuszek.
   4    This code is currently just a placeholder for later work and
   5    does not do anything useful.
   6
   7    This is part of rtl8180 OpenSource driver.
   8    Copyright (C) Andrea Merello 2004  <andreamrl@tiscali.it>
   9    Released under the terms of GPL (General Public Licence)
  10 */
  11
  12 #include "r8192U.h"
  13 #include "r8192U_pm.h"
  14
  15 /*****************************************************************************/
  16 int rtl8192U_save_state (struct pci_dev *dev, u32 state)
  17 {
  18         printk(KERN_NOTICE "r8192U save state call (state %u).\n", state);
  19         return(-EAGAIN);
  20 }
  21
  22 int rtl8192U_suspend(struct usb_interface *intf, pm_message_t state)
  23 {
  24         struct net_device *dev = usb_get_intfdata(intf);
  25
  26         RT_TRACE(COMP_POWER, "============> r8192U suspend call.\n");
  27
  28         if(dev) {
  29                  if (!netif_running(dev)) {
  30                       printk(KERN_WARNING "netif not running, go out suspend function\n");
  31                       return 0;
  32                  }
  33
  34                 if (dev->netdev_ops->ndo_stop)
  35                         dev->netdev_ops->ndo_stop(dev);
  36
  37                 mdelay(10);
  38
  39                 netif_device_detach(dev);
  40         }
  41
  42         return 0;
  43 }
  44
  45 int rtl8192U_resume (struct usb_interface *intf)
  46 {
  47         struct net_device *dev = usb_get_intfdata(intf);
  48
  49         RT_TRACE(COMP_POWER, "================>r8192U resume call.");
  50
  51         if(dev) {
  52                 if (!netif_running(dev)){
  53                         printk(KERN_WARNING "netif not running, go out resume function\n");
  54                         return 0;
  55                 }
  56
  57                 netif_device_attach(dev);
  58
  59                 if (dev->netdev_ops->ndo_open)
  60                         dev->netdev_ops->ndo_open(dev);
  61         }
  62
  63         return 0;
  64 }
  65
  66 int rtl8192U_enable_wake (struct pci_dev *dev, u32 state, int enable)
  67 {
  68         printk(KERN_NOTICE "r8192U enable wake call (state %u, enable %d).\n",
  69                         state, enable);
  70         return(-EAGAIN);
  71 }