rtl_pm.c

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/******************************************************************************
 * Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * The full GNU General Public License is included in this distribution in the
 * file called LICENSE.
 *
 * Contact Information:
 * wlanfae <[email protected]>
******************************************************************************/

#include "rtl_core.h"
#include "r8192E_hw.h"
#include "r8190P_rtl8256.h"
#include "rtl_pm.h"

int rtl8192E_save_state(struct pci_dev *dev, pm_message_t state)
{
    printk(KERN_NOTICE "r8192E save state call (state %u).\n", state.event);
    return -EAGAIN;
}


int rtl8192E_suspend(struct pci_dev *pdev, pm_message_t state)
{
    struct net_device *dev = pci_get_drvdata(pdev);
    struct r8192_priv *priv = rtllib_priv(dev);
    u32 ulRegRead;

    printk(KERN_INFO "============> r8192E suspend call.\n");
    del_timer_sync(&priv->gpio_polling_timer);
    cancel_delayed_work(&priv->gpio_change_rf_wq);
    priv->polling_timer_on = 0;

    if (!netif_running(dev)) {
        printk(KERN_INFO "RTL819XE:UI is open out of suspend "
               "function\n");
        goto out_pci_suspend;
    }

    if (dev->netdev_ops->ndo_stop)
        dev->netdev_ops->ndo_stop(dev);
    netif_device_detach(dev);

    if (!priv->rtllib->bSupportRemoteWakeUp) {
        MgntActSet_RF_State(dev, eRfOff, RF_CHANGE_BY_INIT, true);
        ulRegRead = read_nic_dword(dev, CPU_GEN);
        ulRegRead |= CPU_GEN_SYSTEM_RESET;
        write_nic_dword(dev, CPU_GEN, ulRegRead);
    } else {
        write_nic_dword(dev, WFCRC0, 0xffffffff);
        write_nic_dword(dev, WFCRC1, 0xffffffff);
        write_nic_dword(dev, WFCRC2, 0xffffffff);
        write_nic_byte(dev, PMR, 0x5);
        write_nic_byte(dev, MacBlkCtrl, 0xa);
    }
out_pci_suspend:
    printk("r8192E support WOL call??????????????????????\n");
    if (priv->rtllib->bSupportRemoteWakeUp)
        RT_TRACE(COMP_POWER, "r8192E support WOL call!!!!!!!"
             "!!!!!!!!!!!.\n");
    pci_save_state(pdev);
    pci_disable_device(pdev);
    pci_enable_wake(pdev, pci_choose_state(pdev, state),
            priv->rtllib->bSupportRemoteWakeUp ? 1 : 0);
    pci_set_power_state(pdev, pci_choose_state(pdev, state));

    mdelay(20);

    return 0;
}

int rtl8192E_resume(struct pci_dev *pdev)
{
    struct net_device *dev = pci_get_drvdata(pdev);
    struct r8192_priv *priv = rtllib_priv(dev);
    int err;
    u32 val;

    printk(KERN_INFO "================>r8192E resume call.\n");

    pci_set_power_state(pdev, PCI_D0);

    err = pci_enable_device(pdev);
    if (err) {
        printk(KERN_ERR "%s: pci_enable_device failed on resume\n",
               dev->name);
        return err;
    }
    pci_restore_state(pdev);

    pci_read_config_dword(pdev, 0x40, &val);
    if ((val & 0x0000ff00) != 0)
        pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);

    pci_enable_wake(pdev, PCI_D0, 0);

    if (priv->polling_timer_on == 0)
        check_rfctrl_gpio_timer((unsigned long)dev);

    if (!netif_running(dev)) {
        printk(KERN_INFO "RTL819XE:UI is open out of resume "
               "function\n");
        goto out;
    }

    netif_device_attach(dev);
    if (dev->netdev_ops->ndo_open)
        dev->netdev_ops->ndo_open(dev);

    if (!priv->rtllib->bSupportRemoteWakeUp)
        MgntActSet_RF_State(dev, eRfOn, RF_CHANGE_BY_INIT, true);

out:
    RT_TRACE(COMP_POWER, "<================r8192E resume call.\n");
    return 0;
}


int rtl8192E_enable_wake(struct pci_dev *dev, pm_message_t state, int enable)
{
    printk(KERN_NOTICE "r8192E enable wake call (state %u, enable %d).\n",
           state.event, enable);
    return -EAGAIN;
}