diff options
| author | Shaohua Li <shaohua.li@intel.com> | 2007-07-20 06:03:22 +0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2007-07-22 12:18:32 +0400 |
| commit | ab826ca4cf2fe8ebcfd21189ca8bfeb47ca88359 (patch) | |
| tree | fe98e808f9b593580979308a48d52184e59d734c /drivers/pci | |
| parent | fc30e68e88baf463683bde43347756889ba2ffae (diff) | |
| download | linux-ab826ca4cf2fe8ebcfd21189ca8bfeb47ca88359.tar.xz | |
ACPI: Use ACPI methods to select PCI device suspend state
applied after Rafel's 'PM: Update global suspend and hibernation
operations framework' patch set
Signed-off-by: Shaohua Li<shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pci-acpi.c | 24 | ||||
| -rw-r--r-- | drivers/pci/pci.c | 8 | ||||
| -rw-r--r-- | drivers/pci/pci.h | 2 |
3 files changed, 25 insertions, 9 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index c8062494009f..5e866b94bcab 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -245,11 +245,27 @@ EXPORT_SYMBOL(pci_osc_control_set); * currently we simply return _SxD, if present. */ -static int acpi_pci_choose_state(struct pci_dev *pdev, pm_message_t state) +static pci_power_t acpi_pci_choose_state(struct pci_dev *pdev, + pm_message_t state) { - /* TBD */ - - return -ENODEV; + int acpi_state; + + acpi_state = acpi_pm_device_sleep_state(&pdev->dev, + device_may_wakeup(&pdev->dev), NULL); + if (acpi_state < 0) + return PCI_POWER_ERROR; + + switch (acpi_state) { + case ACPI_STATE_D0: + return PCI_D0; + case ACPI_STATE_D1: + return PCI_D1; + case ACPI_STATE_D2: + return PCI_D2; + case ACPI_STATE_D3: + return PCI_D3hot; + } + return PCI_POWER_ERROR; } static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 03fd59e80fef..1458fd69e670 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -499,7 +499,7 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state) return 0; } -int (*platform_pci_choose_state)(struct pci_dev *dev, pm_message_t state); +pci_power_t (*platform_pci_choose_state)(struct pci_dev *dev, pm_message_t state); /** * pci_choose_state - Choose the power state of a PCI device @@ -513,15 +513,15 @@ int (*platform_pci_choose_state)(struct pci_dev *dev, pm_message_t state); pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state) { - int ret; + pci_power_t ret; if (!pci_find_capability(dev, PCI_CAP_ID_PM)) return PCI_D0; if (platform_pci_choose_state) { ret = platform_pci_choose_state(dev, state); - if (ret >= 0) - state.event = ret; + if (ret != PCI_POWER_ERROR) + return ret; } switch (state.event) { diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 3fec13d3add7..c293ba1f274a 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -13,7 +13,7 @@ extern int pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res, resource_size_t, resource_size_t), void *alignf_data); /* Firmware callbacks */ -extern int (*platform_pci_choose_state)(struct pci_dev *dev, pm_message_t state); +extern pci_power_t (*platform_pci_choose_state)(struct pci_dev *dev, pm_message_t state); extern int (*platform_pci_set_power_state)(struct pci_dev *dev, pci_power_t state); extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val); |