kernel/2.6.29.6-aldebaran-rt/drivers/staging/rtl8187se/r8180_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 #ifdef CONFIG_RTL8180_PM
  13
  14
  15 #include "r8180_hw.h"
  16 #include "r8180_pm.h"
  17 #include "r8180.h"
  18
  19 int rtl8180_save_state (struct pci_dev *dev, u32 state)
  20 {
  21         printk(KERN_NOTICE "r8180 save state call (state %u).\n", state);
  22         return(-EAGAIN);
  23 }
  24
  25 int rtl8180_suspend (struct pci_dev *pdev, pm_message_t state)
  26 {
  27         struct net_device *dev = pci_get_drvdata(pdev);
  28 //      struct r8180_priv *priv = ieee80211_priv(dev);
  29
  30         if (!netif_running(dev))
  31                 goto out_pci_suspend;
  32
  33         dev->stop(dev);
  34
  35         netif_device_detach(dev);
  36
  37 out_pci_suspend:
  38         pci_save_state(pdev);
  39         pci_disable_device(pdev);
  40         pci_set_power_state(pdev,pci_choose_state(pdev,state));
  41         return 0;
  42 }
  43
  44 int rtl8180_resume (struct pci_dev *pdev)
  45 {
  46         struct net_device *dev = pci_get_drvdata(pdev);
  47 //      struct r8180_priv *priv = ieee80211_priv(dev);
  48         int err;
  49         u32 val;
  50
  51         pci_set_power_state(pdev, PCI_D0);
  52
  53         err = pci_enable_device(pdev);
  54         if(err) {
  55                 printk(KERN_ERR "%s: pci_enable_device failed on resume\n",
  56                                 dev->name);
  57
  58                 return err;
  59         }
  60         pci_restore_state(pdev);
  61         /*
  62          * Suspend/Resume resets the PCI configuration space, so we have to
  63          * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
  64          * from interfering with C3 CPU state. pci_restore_state won't help
  65          * here since it only restores the first 64 bytes pci config header.
  66          */
  67         pci_read_config_dword(pdev, 0x40, &val);
  68         if ((val & 0x0000ff00) != 0)
  69                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
  70
  71         if(!netif_running(dev))
  72                 goto out;
  73
  74         dev->open(dev);
  75         netif_device_attach(dev);
  76 out:
  77         return 0;
  78 }
  79
  80
  81 int rtl8180_enable_wake (struct pci_dev *dev, u32 state, int enable)
  82 {
  83         printk(KERN_NOTICE "r8180 enable wake call (state %u, enable %d).\n",
  84                state, enable);
  85         return(-EAGAIN);
  86 }
  87
  88
  89
  90 #endif //CONFIG_RTL8180_PM