drivers/staging/rtl8192e/rtl_pm.c

/******************************************************************************
 * 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 <wlanfae@realtek.com>
******************************************************************************/

#ifdef CONFIG_PM_RTL
#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;
}

#endif