From: Rafael J. Wysocki Date: Wed, 29 Oct 2008 21:22:14 +0000 (-0700) Subject: skge: adapt skge to use reworked PCI PM X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5177b3240a6608fc0c9c05cc32f4855c6540f8d5;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git skge: adapt skge to use reworked PCI PM Adapt the skge driver to the reworked PCI PM * Use device_set_wakeup_enable() and friends as needed * Remove an open-coded reference to the standard PCI PM registers * Use pci_prepare_to_sleep() and pci_back_from_sleep() in the ->suspend() and ->resume() callbacks * Use the observation that it is sufficient to call pci_enable_wake() once, unless it fails Tested on Asus L5D (Yukon-Lite rev 7). Signed-off-by: Rafael J. Wysocki Cc: Stephen Hemminger Cc: Jeff Garzik Cc: Jesse Barnes Signed-off-by: Andrew Morton Signed-off-by: Jeff Garzik --- diff --git a/drivers/net/skge.c b/drivers/net/skge.c index 467f53dc09c8..7911839f7375 100644 --- a/drivers/net/skge.c +++ b/drivers/net/skge.c @@ -149,24 +149,6 @@ static u32 wol_supported(const struct skge_hw *hw) return WAKE_MAGIC | WAKE_PHY; } -static u32 pci_wake_enabled(struct pci_dev *dev) -{ - int pm = pci_find_capability(dev, PCI_CAP_ID_PM); - u16 value; - - /* If device doesn't support PM Capabilities, but request is to disable - * wake events, it's a nop; otherwise fail */ - if (!pm) - return 0; - - pci_read_config_word(dev, pm + PCI_PM_PMC, &value); - - value &= PCI_PM_CAP_PME_MASK; - value >>= ffs(PCI_PM_CAP_PME_MASK) - 1; /* First bit of mask */ - - return value != 0; -} - static void skge_wol_init(struct skge_port *skge) { struct skge_hw *hw = skge->hw; @@ -254,10 +236,14 @@ static int skge_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) struct skge_port *skge = netdev_priv(dev); struct skge_hw *hw = skge->hw; - if (wol->wolopts & ~wol_supported(hw)) + if ((wol->wolopts & ~wol_supported(hw)) + || !device_can_wakeup(&hw->pdev->dev)) return -EOPNOTSUPP; skge->wol = wol->wolopts; + + device_set_wakeup_enable(&hw->pdev->dev, skge->wol); + return 0; } @@ -3856,7 +3842,7 @@ static struct net_device *skge_devinit(struct skge_hw *hw, int port, skge->speed = -1; skge->advertising = skge_supported_modes(hw); - if (pci_wake_enabled(hw->pdev)) + if (device_may_wakeup(&hw->pdev->dev)) skge->wol = wol_supported(hw) & WAKE_MAGIC; hw->dev[port] = dev; @@ -4081,8 +4067,8 @@ static int skge_suspend(struct pci_dev *pdev, pm_message_t state) } skge_write32(hw, B0_IMSK, 0); - pci_enable_wake(pdev, pci_choose_state(pdev, state), wol); - pci_set_power_state(pdev, pci_choose_state(pdev, state)); + + pci_prepare_to_sleep(pdev); return 0; } @@ -4095,7 +4081,7 @@ static int skge_resume(struct pci_dev *pdev) if (!hw) return 0; - err = pci_set_power_state(pdev, PCI_D0); + err = pci_back_from_sleep(pdev); if (err) goto out; @@ -4103,8 +4089,6 @@ static int skge_resume(struct pci_dev *pdev) if (err) goto out; - pci_enable_wake(pdev, PCI_D0, 0); - err = skge_reset(hw); if (err) goto out; @@ -4145,8 +4129,8 @@ static void skge_shutdown(struct pci_dev *pdev) wol |= skge->wol; } - pci_enable_wake(pdev, PCI_D3hot, wol); - pci_enable_wake(pdev, PCI_D3cold, wol); + if (pci_enable_wake(pdev, PCI_D3cold, wol)) + pci_enable_wake(pdev, PCI_D3hot, wol); pci_disable_device(pdev); pci_set_power_state(pdev, PCI_D3hot);