diff options
author | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-12 16:04:50 -0700 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-12 16:04:50 -0700 |
commit | 3f603ed319d5120e883e64ac5967b2fc848fc43b (patch) | |
tree | 52ef311c245e4e4cd623b546ea1daf05a5ea8911 /drivers/pci/pci.c | |
parent | 55ee3b8365fd5d301b9076eea739146f2b91e82c (diff) | |
parent | 5028770a42e7bc4d15791a44c28f0ad539323807 (diff) |
Merge master.kernel.org:/pub/scm/linux/kernel/git/lenb/linux-2.6
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 d382bdb7b56..1b34fc56067 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: |