drivers/staging/rtl8192e/r8192_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 "r8192E.h"
  13 #include "r8192E_hw.h"
  14 #include "r8192_pm.h"
  15 #include "r8190_rtl8256.h"
  16
  17 int rtl8192E_save_state (struct pci_dev *dev, pm_message_t state)
  18 {
  19         printk(KERN_NOTICE "r8192E save state call (state %u).\n", state.event);
  20         return(-EAGAIN);
  21 }
  22
  23
  24 int rtl8192E_suspend (struct pci_dev *pdev, pm_message_t state)
  25 {
  26         struct net_device *dev = pci_get_drvdata(pdev);
  27         struct r8192_priv *priv = ieee80211_priv(dev);
  28 #ifdef RTL8190P
  29         u8      ucRegRead;
  30 #endif
  31         u32     ulRegRead;
  32
  33         RT_TRACE(COMP_POWER, "============> r8192E suspend call.\n");
  34         if (!netif_running(dev))
  35                 goto out_pci_suspend;
  36
  37         if (dev->netdev_ops->ndo_stop)
  38                 dev->netdev_ops->ndo_stop(dev);
  39 //      dev->stop(dev);
  40 #if 0
  41
  42         netif_carrier_off(dev);
  43
  44         ieee80211_softmac_stop_protocol(priv->ieee80211);
  45
  46         write_nic_byte(dev,MSR,(read_nic_byte(dev,MSR)&0xfc)|MSR_LINK_NONE);
  47         if(!priv->ieee80211->bSupportRemoteWakeUp) {
  48                 /* disable tx/rx. In 8185 we write 0x10 (Reset bit),
  49                  * but here we make reference to WMAC and wirte 0x0.
  50                  * 2006.11.21 Emily
  51                  */
  52                 write_nic_byte(dev, CMDR, 0);
  53         }
  54         //disable interrupt
  55         write_nic_dword(dev,INTA_MASK,0);
  56         priv->irq_enabled = 0;
  57         write_nic_dword(dev,ISR,read_nic_dword(dev, ISR));
  58
  59         /* need to  free DM related functions */
  60         cancel_work_sync(&priv->reset_wq);
  61         del_timer_sync(&priv->fsync_timer);
  62         del_timer_sync(&priv->watch_dog_timer);
  63         cancel_delayed_work(&priv->watch_dog_wq);
  64         cancel_delayed_work(&priv->update_beacon_wq);
  65         cancel_work_sync(&priv->qos_activate);
  66
  67         /* TODO
  68 #if ((DEV_BUS_TYPE == PCI_INTERFACE) && (HAL_CODE_BASE == RTL8192))
  69 pHalData->bHwRfOffAction = 2;
  70 #endif
  71 */
  72 #endif
  73         // Call MgntActSet_RF_State instead to prevent RF config race condition.
  74         // By Bruce, 2008-01-17.
  75         //
  76         if(!priv->ieee80211->bSupportRemoteWakeUp) {
  77                 MgntActSet_RF_State(dev, eRfOff, RF_CHANGE_BY_INIT);
  78                 // 2006.11.30. System reset bit
  79                 ulRegRead = read_nic_dword(dev, CPU_GEN);
  80                 ulRegRead|=CPU_GEN_SYSTEM_RESET;
  81                 write_nic_dword(dev, CPU_GEN, ulRegRead);
  82         } else {
  83                 //2008.06.03 for WOL
  84                 write_nic_dword(dev, WFCRC0, 0xffffffff);
  85                 write_nic_dword(dev, WFCRC1, 0xffffffff);
  86                 write_nic_dword(dev, WFCRC2, 0xffffffff);
  87 #ifdef RTL8190P
  88                 //GPIO 0 = TRUE
  89                 ucRegRead = read_nic_byte(dev, GPO);
  90                 ucRegRead |= BIT0;
  91                 write_nic_byte(dev, GPO, ucRegRead);
  92 #endif
  93                 //Write PMR register
  94                 write_nic_byte(dev, PMR, 0x5);
  95                 //Disable tx, enanble rx
  96                 write_nic_byte(dev, MacBlkCtrl, 0xa);
  97         }
  98
  99 out_pci_suspend:
 100         RT_TRACE(COMP_POWER, "r8192E support WOL call??????????????????????\n");
 101         if(priv->ieee80211->bSupportRemoteWakeUp) {
 102                 RT_TRACE(COMP_POWER, "r8192E support WOL call!!!!!!!!!!!!!!!!!!.\n");
 103         }
 104         netif_device_detach(dev);
 105         pci_save_state(pdev);
 106         pci_disable_device(pdev);
 107         pci_enable_wake(pdev, pci_choose_state(pdev,state),\
 108                         priv->ieee80211->bSupportRemoteWakeUp?1:0);
 109         pci_set_power_state(pdev,pci_choose_state(pdev,state));
 110
 111         return 0;
 112 }
 113
 114 int rtl8192E_resume (struct pci_dev *pdev)
 115 {
 116         struct net_device *dev = pci_get_drvdata(pdev);
 117         //struct r8192_priv *priv = ieee80211_priv(dev);
 118         //union iwreq_data wrqu;
 119         int err;
 120         u32 val;
 121
 122         RT_TRACE(COMP_POWER, "================>r8192E resume call.");
 123
 124         pci_set_power_state(pdev, PCI_D0);
 125
 126         err = pci_enable_device(pdev);
 127         if(err) {
 128                 printk(KERN_ERR "%s: pci_enable_device failed on resume\n",
 129                                 dev->name);
 130                 return err;
 131         }
 132
 133         pci_restore_state(pdev);
 134
 135         /*
 136          * Suspend/Resume resets the PCI configuration space, so we have to
 137          * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
 138          * from interfering with C3 CPU state. pci_restore_state won't help
 139          * here since it only restores the first 64 bytes pci config header.
 140          */
 141         pci_read_config_dword(pdev, 0x40, &val);
 142         if ((val & 0x0000ff00) != 0) {
 143                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
 144         }
 145
 146
 147
 148         pci_enable_wake(pdev, PCI_D0, 0);
 149
 150         if(!netif_running(dev))
 151                 goto out;
 152
 153         netif_device_attach(dev);
 154
 155         if (dev->netdev_ops->ndo_open)
 156                 dev->netdev_ops->ndo_open(dev);
 157
 158 //      dev->open(dev);
 159 out:
 160         RT_TRACE(COMP_POWER, "<================r8192E resume call.\n");
 161         return 0;
 162 }
 163
 164
 165 int rtl8192E_enable_wake (struct pci_dev *dev, pm_message_t state, int enable)
 166 {
 167         printk(KERN_NOTICE "r8192E enable wake call (state %u, enable %d).\n",
 168                state.event, enable);
 169         return(-EAGAIN);
 170 }