From: Rafael J. Wysocki Date: Thu, 10 Feb 2011 06:55:19 +0000 (+0000) Subject: atl1: Do not use legacy PCI power management X-Git-Tag: MMI-PSA29.97-13-9~20520^2~390 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=dd68153def6b890a23288776cbd5bd2bad223a3f;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git atl1: Do not use legacy PCI power management The atl1 driver uses the legacy PCI power management, so it has to do some PCI-specific things in its ->suspend() and ->resume() callbacks, which isn't necessary and should better be done by the PCI subsystem-level power management code. Convert atl1 to the new PCI power management framework and make it let the PCI subsystem take care of all the PCI-specific aspects of device handling during system power transitions. Tested-by: Thomas Fjellstrom Signed-off-by: Rafael J. Wysocki Signed-off-by: David S. Miller --- diff --git a/drivers/net/atlx/atl1.c b/drivers/net/atlx/atl1.c index 3b527687c28f..67f40b9c16ed 100644 --- a/drivers/net/atlx/atl1.c +++ b/drivers/net/atlx/atl1.c @@ -950,6 +950,7 @@ static int __devinit atl1_sw_init(struct atl1_adapter *adapter) hw->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; adapter->wol = 0; + device_set_wakeup_enable(&adapter->pdev->dev, false); adapter->rx_buffer_len = (hw->max_frame_size + 7) & ~7; adapter->ict = 50000; /* 100ms */ adapter->link_speed = SPEED_0; /* hardware init */ @@ -2735,15 +2736,15 @@ static int atl1_close(struct net_device *netdev) } #ifdef CONFIG_PM -static int atl1_suspend(struct pci_dev *pdev, pm_message_t state) +static int atl1_suspend(struct device *dev) { + struct pci_dev *pdev = to_pci_dev(dev); struct net_device *netdev = pci_get_drvdata(pdev); struct atl1_adapter *adapter = netdev_priv(netdev); struct atl1_hw *hw = &adapter->hw; u32 ctrl = 0; u32 wufc = adapter->wol; u32 val; - int retval; u16 speed; u16 duplex; @@ -2751,17 +2752,15 @@ static int atl1_suspend(struct pci_dev *pdev, pm_message_t state) if (netif_running(netdev)) atl1_down(adapter); - retval = pci_save_state(pdev); - if (retval) - return retval; - atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl); atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl); val = ctrl & BMSR_LSTATUS; if (val) wufc &= ~ATLX_WUFC_LNKC; + if (!wufc) + goto disable_wol; - if (val && wufc) { + if (val) { val = atl1_get_speed_and_duplex(hw, &speed, &duplex); if (val) { if (netif_msg_ifdown(adapter)) @@ -2798,23 +2797,18 @@ static int atl1_suspend(struct pci_dev *pdev, pm_message_t state) ctrl |= PCIE_PHYMISC_FORCE_RCV_DET; iowrite32(ctrl, hw->hw_addr + REG_PCIE_PHYMISC); ioread32(hw->hw_addr + REG_PCIE_PHYMISC); - - pci_enable_wake(pdev, pci_choose_state(pdev, state), 1); - goto exit; - } - - if (!val && wufc) { + } else { ctrl |= (WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN); iowrite32(ctrl, hw->hw_addr + REG_WOL_CTRL); ioread32(hw->hw_addr + REG_WOL_CTRL); iowrite32(0, hw->hw_addr + REG_MAC_CTRL); ioread32(hw->hw_addr + REG_MAC_CTRL); hw->phy_configured = false; - pci_enable_wake(pdev, pci_choose_state(pdev, state), 1); - goto exit; } -disable_wol: + return 0; + + disable_wol: iowrite32(0, hw->hw_addr + REG_WOL_CTRL); ioread32(hw->hw_addr + REG_WOL_CTRL); ctrl = ioread32(hw->hw_addr + REG_PCIE_PHYMISC); @@ -2822,37 +2816,17 @@ disable_wol: iowrite32(ctrl, hw->hw_addr + REG_PCIE_PHYMISC); ioread32(hw->hw_addr + REG_PCIE_PHYMISC); hw->phy_configured = false; - pci_enable_wake(pdev, pci_choose_state(pdev, state), 0); -exit: - if (netif_running(netdev)) - pci_disable_msi(adapter->pdev); - pci_disable_device(pdev); - pci_set_power_state(pdev, pci_choose_state(pdev, state)); return 0; } -static int atl1_resume(struct pci_dev *pdev) +static int atl1_resume(struct device *dev) { + struct pci_dev *pdev = to_pci_dev(dev); struct net_device *netdev = pci_get_drvdata(pdev); struct atl1_adapter *adapter = netdev_priv(netdev); - u32 err; - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - - err = pci_enable_device(pdev); - if (err) { - if (netif_msg_ifup(adapter)) - dev_printk(KERN_DEBUG, &pdev->dev, - "error enabling pci device\n"); - return err; - } - - pci_set_master(pdev); iowrite32(0, adapter->hw.hw_addr + REG_WOL_CTRL); - pci_enable_wake(pdev, PCI_D3hot, 0); - pci_enable_wake(pdev, PCI_D3cold, 0); atl1_reset_hw(&adapter->hw); @@ -2864,16 +2838,25 @@ static int atl1_resume(struct pci_dev *pdev) return 0; } + +static SIMPLE_DEV_PM_OPS(atl1_pm_ops, atl1_suspend, atl1_resume); +#define ATL1_PM_OPS (&atl1_pm_ops) + #else -#define atl1_suspend NULL -#define atl1_resume NULL + +static int atl1_suspend(struct device *dev) { return 0; } + +#define ATL1_PM_OPS NULL #endif static void atl1_shutdown(struct pci_dev *pdev) { -#ifdef CONFIG_PM - atl1_suspend(pdev, PMSG_SUSPEND); -#endif + struct net_device *netdev = pci_get_drvdata(pdev); + struct atl1_adapter *adapter = netdev_priv(netdev); + + atl1_suspend(&pdev->dev); + pci_wake_from_d3(pdev, adapter->wol); + pci_set_power_state(pdev, PCI_D3hot); } #ifdef CONFIG_NET_POLL_CONTROLLER @@ -3117,9 +3100,8 @@ static struct pci_driver atl1_driver = { .id_table = atl1_pci_tbl, .probe = atl1_probe, .remove = __devexit_p(atl1_remove), - .suspend = atl1_suspend, - .resume = atl1_resume, - .shutdown = atl1_shutdown + .shutdown = atl1_shutdown, + .driver.pm = ATL1_PM_OPS, }; /* @@ -3409,6 +3391,9 @@ static int atl1_set_wol(struct net_device *netdev, adapter->wol = 0; if (wol->wolopts & WAKE_MAGIC) adapter->wol |= ATLX_WUFC_MAG; + + device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); + return 0; }