diff options
| author | Thomas Gleixner <tglx@tglx.tec.linutronix.de> | 2005-07-13 10:45:00 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@mtd.linutronix.de> | 2005-07-13 10:45:00 +0200 |
| commit | 1b3035b7fcc72b6b36f2a3634dad832eb2453ce8 (patch) | |
| tree | 728174d72943cc9b981a5843553551df62eddc41 /drivers/pci/pci.c | |
| parent | a98a5d04f400ad112e59cadd739dbabf89417e60 (diff) | |
| parent | c32511e2718618f0b53479eb36e07439aa363a74 (diff) | |
Merge with rsync://fileserver/linux
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index d382bdb7b560..1b34fc56067e 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -235,7 +235,7 @@ pci_find_parent_resource(const struct pci_dev *dev, struct resource *res) * -EIO if device does not support PCI PM. * 0 if we can successfully change the power state. */ - +int (*platform_pci_set_power_state)(struct pci_dev *dev, pci_power_t t); int pci_set_power_state(struct pci_dev *dev, pci_power_t state) { @@ -299,11 +299,20 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state) msleep(10); else if (state == PCI_D2 || dev->current_state == PCI_D2) udelay(200); - dev->current_state = state; + /* + * Give firmware a chance to be called, such as ACPI _PRx, _PSx + * Firmware method after natice method ? + */ + if (platform_pci_set_power_state) + platform_pci_set_power_state(dev, state); + + dev->current_state = state; return 0; } +int (*platform_pci_choose_state)(struct pci_dev *dev, pm_message_t state); + /** * pci_choose_state - Choose the power state of a PCI device * @dev: PCI device to be suspended @@ -316,10 +325,17 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state) pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state) { + int ret; + if (!pci_find_capability(dev, PCI_CAP_ID_PM)) return PCI_D0; - switch (state) { + if (platform_pci_choose_state) { + ret = platform_pci_choose_state(dev, state); + if (ret >= 0) + state = ret; + } + switch (state) { case 0: return PCI_D0; case 3: return PCI_D3hot; default: |