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ACPI: Use ACPI methods to select PCI device suspend state

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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>
This commit is contained in:
Shaohua Li 2007-07-20 10:03:22 +08:00 committed by Len Brown
parent fc30e68e88
commit ab826ca4cf
3 changed files with 24 additions and 8 deletions
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22
drivers/pci/pci-acpi.c
View file

@ -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 */
int acpi_state;
return -ENODEV;
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)

8
drivers/pci/pci.c
View file

@ -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) {

2
drivers/pci/pci.h
View file

@ -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);