Hi,
i would like zu suspend my pci-express Atheros Wifi-Card in my MacBook.
All the Kernel-Methods want to get the Device Pointer. But how do i get this?
These functions are intended for use by individual drivers, and are defined in
struct pci_driver:
int (*save_state) (struct pci_dev *dev, u32 state);
int (*suspend)(struct pci_dev *dev, u32 state);
int (*resume) (struct pci_dev *dev);
int (*enable_wake) (struct pci_dev *dev, u32 state, int enable);
Suspend in general, in every pci driver, has to implement:
pci_disable_device(dev);
and
pci_set_power_state(dev,state);
These are implemented in "/usr/src/linux-2.6.17-gentoo-r4/drivers/pci/pci.c".
Hence, suspend in in the madwifi pci driver is using these two funktions in
the file "/root/madwifi-0.9.2/madwifi-0.9.2/ath/if_ath_pci.c"
ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
is using
struct net_device *dev = pci_get_drvdata(pdev);
ath_suspend(dev);
PCI_SAVE_STATE(pdev, ((struct ath_pci_softc*)dev->priv)->aps_pmstate);
pci_disable_device(pdev);
return pci_set_power_state(pdev, PCI_D3hot);
but there is also a acpi-methods like this in the
file "/usr/src/linux-2.6.17-gentoo-r4/drivers/pci/pci-acpi.c"
static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
Maybe i can use this one?
So now i think that it must be possible, to suspend my Atheros Wifi-Card, when
running "ath_pci_suspend" with the correct device Pointer! Is that correct?
But how do i get this Pointer?
Does anyone has experiences setting the Power-State of PCI Devices?
Greetings,
Julius
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