drivers/staging/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 #ifdef CONFIG_PM_RTL
  21 #include "rtl_core.h"
  22 #include "r8192E_hw.h"
  23 #include "r8190P_rtl8256.h"
  24 #include "rtl_pm.h"
  25
  26 int rtl8192E_save_state(struct pci_dev *dev, pm_message_t state)
  27 {
  28         printk(KERN_NOTICE "r8192E save state call (state %u).\n", state.event);
  29         return -EAGAIN;
  30 }
  31
  32
  33 int rtl8192E_suspend(struct pci_dev *pdev, pm_message_t state)
  34 {
  35         struct net_device *dev = pci_get_drvdata(pdev);
  36         struct r8192_priv *priv = rtllib_priv(dev);
  37         u32     ulRegRead;
  38
  39         printk(KERN_INFO "============> r8192E suspend call.\n");
  40         del_timer_sync(&priv->gpio_polling_timer);
  41         cancel_delayed_work(&priv->gpio_change_rf_wq);
  42         priv->polling_timer_on = 0;
  43
  44         if (!netif_running(dev)) {
  45                 printk(KERN_INFO "RTL819XE:UI is open out of suspend "
  46                        "function\n");
  47                 goto out_pci_suspend;
  48         }
  49
  50         if (dev->netdev_ops->ndo_stop)
  51                 dev->netdev_ops->ndo_stop(dev);
  52         netif_device_detach(dev);
  53
  54         if (!priv->rtllib->bSupportRemoteWakeUp) {
  55                 MgntActSet_RF_State(dev, eRfOff, RF_CHANGE_BY_INIT, true);
  56                 ulRegRead = read_nic_dword(dev, CPU_GEN);
  57                 ulRegRead |= CPU_GEN_SYSTEM_RESET;
  58                 write_nic_dword(dev, CPU_GEN, ulRegRead);
  59         } else {
  60                 write_nic_dword(dev, WFCRC0, 0xffffffff);
  61                 write_nic_dword(dev, WFCRC1, 0xffffffff);
  62                 write_nic_dword(dev, WFCRC2, 0xffffffff);
  63                 write_nic_byte(dev, PMR, 0x5);
  64                 write_nic_byte(dev, MacBlkCtrl, 0xa);
  65         }
  66 out_pci_suspend:
  67         printk("r8192E support WOL call??????????????????????\n");
  68         if (priv->rtllib->bSupportRemoteWakeUp)
  69                 RT_TRACE(COMP_POWER, "r8192E support WOL call!!!!!!!"
  70                          "!!!!!!!!!!!.\n");
  71         pci_save_state(pdev);
  72         pci_disable_device(pdev);
  73         pci_enable_wake(pdev, pci_choose_state(pdev, state),
  74                         priv->rtllib->bSupportRemoteWakeUp ? 1 : 0);
  75         pci_set_power_state(pdev, pci_choose_state(pdev, state));
  76
  77         mdelay(20);
  78
  79         return 0;
  80 }
  81
  82 int rtl8192E_resume(struct pci_dev *pdev)
  83 {
  84         struct net_device *dev = pci_get_drvdata(pdev);
  85         struct r8192_priv *priv = rtllib_priv(dev);
  86         int err;
  87         u32 val;
  88
  89         printk(KERN_INFO "================>r8192E resume call.\n");
  90
  91         pci_set_power_state(pdev, PCI_D0);
  92
  93         err = pci_enable_device(pdev);
  94         if (err) {
  95                 printk(KERN_ERR "%s: pci_enable_device failed on resume\n",
  96                        dev->name);
  97                 return err;
  98         }
  99         pci_restore_state(pdev);
 100
 101         pci_read_config_dword(pdev, 0x40, &val);
 102         if ((val & 0x0000ff00) != 0)
 103                 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
 104
 105         pci_enable_wake(pdev, PCI_D0, 0);
 106
 107         if (priv->polling_timer_on == 0)
 108                 check_rfctrl_gpio_timer((unsigned long)dev);
 109
 110         if (!netif_running(dev)) {
 111                 printk(KERN_INFO "RTL819XE:UI is open out of resume "
 112                        "function\n");
 113                 goto out;
 114         }
 115
 116         netif_device_attach(dev);
 117         if (dev->netdev_ops->ndo_open)
 118                 dev->netdev_ops->ndo_open(dev);
 119
 120         if (!priv->rtllib->bSupportRemoteWakeUp)
 121                 MgntActSet_RF_State(dev, eRfOn, RF_CHANGE_BY_INIT, true);
 122
 123 out:
 124         RT_TRACE(COMP_POWER, "<================r8192E resume call.\n");
 125         return 0;
 126 }
 127
 128
 129 int rtl8192E_enable_wake(struct pci_dev *dev, pm_message_t state, int enable)
 130 {
 131         printk(KERN_NOTICE "r8192E enable wake call (state %u, enable %d).\n",
 132                state.event, enable);
 133         return -EAGAIN;
 134 }
 135
 136 #endif