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| author | Jeff Garzik <jgarzik@pobox.com> | 2005-08-29 16:40:27 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-08-29 16:40:27 -0400 |
| commit | c1b054d03f5b31c33eaa0b267c629b118eaf3790 (patch) | |
| tree | 9333907ca767be24fcb3667877242976c3e3c8dd /drivers/pci/pci.c | |
| parent | 559fb51ba7e66fe298b8355fabde1275b7def35f (diff) | |
| parent | bf4e70e54cf31dcca48d279c7f7e71328eebe749 (diff) | |
| download | linux-stable-c1b054d03f5b31c33eaa0b267c629b118eaf3790.tar.gz linux-stable-c1b054d03f5b31c33eaa0b267c629b118eaf3790.tar.bz2 linux-stable-c1b054d03f5b31c33eaa0b267c629b118eaf3790.zip | |
Merge /spare/repo/linux-2.6/
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index f04b9ffe4153..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: @@ -334,10 +350,6 @@ EXPORT_SYMBOL(pci_choose_state); /** * pci_save_state - save the PCI configuration space of a device before suspending * @dev: - PCI device that we're dealing with - * @buffer: - buffer to hold config space context - * - * @buffer must be large enough to hold the entire PCI 2.2 config space - * (>= 64 bytes). */ int pci_save_state(struct pci_dev *dev) @@ -352,8 +364,6 @@ pci_save_state(struct pci_dev *dev) /** * pci_restore_state - Restore the saved state of a PCI device * @dev: - PCI device that we're dealing with - * @buffer: - saved PCI config space - * */ int pci_restore_state(struct pci_dev *dev) |