drivers/staging/rtl8192e/rtl8192e/rtl_pm.c

   1 /******************************************************************************
   2  * Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
   3  *
   4  * This program is distributed in the hope that it will be useful, but WITHOUT
   5  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   6  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
   7  * more details.
   8  *
   9  * You should have received a copy of the GNU General Public License along with
  10  * this program; if not, write to the Free Software Foundation, Inc.,
  11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  12  *
  13  * The full GNU General Public License is included in this distribution in the
  14  * file called LICENSE.
  15  *
  16  * Contact Information:
  17  * wlanfae <wlanfae@realtek.com>
  18 ******************************************************************************/
  19
  20 #include "rtl_core.h"
  21 #include "r8192E_hw.h"
  22 #include "r8190P_rtl8256.h"
  23 #include "rtl_pm.h"
  24
  25 int rtl8192E_save_state(struct pci_dev *dev, pm_message_t state)
  26 {
  27         printk(KERN_NOTICE "r8192E save state call (state %u).\n", state.event);
  28         return -EAGAIN;
  29 }
  30
  31
  32 int rtl8192E_suspend(struct pci_dev *pdev, pm_message_t state)
  33 {
  34         struct net_device *dev = pci_get_drvdata(pdev);
  35         struct r8192_priv *priv = rtllib_priv(dev);
  36         u32     ulRegRead;
  37
  38         printk(KERN_INFO "============> r8192E suspend call.\n");
  39         del_timer_sync(&priv->gpio_polling_timer);
  40         cancel_delayed_work(&priv->gpio_change_rf_wq);
  41         priv->polling_timer_on = 0;
  42
  43         if (!netif_running(dev)) {
  44                 printk(KERN_INFO "RTL819XE:UI is open out of suspend "
  45                        "function\n");
  46                 goto out_pci_suspend;
  47         }
  48
  49         if (dev->netdev_ops->ndo_stop)
  50                 dev->netdev_ops->ndo_stop(dev);
  51         netif_device_detach(dev);
  52
  53         if (!priv->rtllib->bSupportRemoteWakeUp) {
  54                 MgntActSet_RF_State(dev, eRfOff, RF_CHANGE_BY_INIT, true);
  55                 ulRegRead = read_nic_dword(dev, CPU_GEN);
  56                 ulRegRead |= CPU_GEN_SYSTEM_RESET;
  57                 write_nic_dword(dev, CPU_GEN, ulRegRead);
  58         } else {
  59                 write_nic_dword(dev, WFCRC0, 0xffffffff);
  60                 write_nic_dword(dev, WFCRC1, 0xffffffff);
  61                 write_nic_dword(dev, WFCRC2, 0xffffffff);
  62                 write_nic_byte(dev, PMR, 0x5);
  63                 write_nic_byte(dev, MacBlkCtrl, 0xa);
  64         }
  65 out_pci_suspend:
  66         printk("r8192E support WOL call??????????????????????\n");
  67         if (priv->rtllib->bSupportRemoteWakeUp)
  68                 RT_TRACE(COMP_POWER, "r8192E support WOL call!!!!!!!"
  69                          "!!!!!!!!!!!.\n");
  70         pci_save_state(pdev);
  71         pci_disable_device(pdev);
  72         pci_enable_wake(pdev, pci_choose_state(pdev, state),
  73                         priv->rtllib->bSupportRemoteWakeUp ? 1 : 0);
  74         pci_set_power_state(pdev, pci_choose_state(pdev, state));
  75
  76         mdelay(20);
  77
  78         return 0;
  79 }
  80
  81 int rtl8192E_resume(struct pci_dev *pdev)
  82 {
  83         struct net_device *dev = pci_get_drvdata(pdev);
  84         struct r8192_priv *priv = rtllib_priv(dev);
  85         int err;
  86         u32 val;
  87
  88         printk(KERN_INFO "================>r8192E resume call.\n");
  89
  90         pci_set_power_state(pdev, PCI_D0);
  91
  92         err = pci_enable_device(pdev);
  93         if (err) {
  94                 printk(KERN_ERR "%s: pci_enable_device failed on resume\n",
  95                        dev->name);
  96                 return err;
  97         }
  98         pci_restore_state(pdev);
  99
 100         pci_read_config_dword(pdev, 0x40, &val);
 101         if ((val & 0x0000ff00) != 0)
 102                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
 103
 104         pci_enable_wake(pdev, PCI_D0, 0);
 105
 106         if (priv->polling_timer_on == 0)
 107                 check_rfctrl_gpio_timer((unsigned long)dev);
 108
 109         if (!netif_running(dev)) {
 110                 printk(KERN_INFO "RTL819XE:UI is open out of resume "
 111                        "function\n");
 112                 goto out;
 113         }
 114
 115         netif_device_attach(dev);
 116         if (dev->netdev_ops->ndo_open)
 117                 dev->netdev_ops->ndo_open(dev);
 118
 119         if (!priv->rtllib->bSupportRemoteWakeUp)
 120                 MgntActSet_RF_State(dev, eRfOn, RF_CHANGE_BY_INIT, true);
 121
 122 out:
 123         RT_TRACE(COMP_POWER, "<================r8192E resume call.\n");
 124         return 0;
 125 }
 126
 127
 128 int rtl8192E_enable_wake(struct pci_dev *dev, pm_message_t state, int enable)
 129 {
 130         printk(KERN_NOTICE "r8192E enable wake call (state %u, enable %d).\n",
 131                state.event, enable);
 132         return -EAGAIN;
 133 }
 134