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authorRafael J. Wysocki <rjw@sisk.pl>2008-07-07 03:32:02 +0200
committerJesse Barnes <jbarnes@virtuousgeek.org>2008-07-07 16:25:10 -0700
commit961d9120fa6f078492a1c762dd91f2c097e56c83 (patch)
treee11955d14d0f777ad5a76b44034f6b3c5281a0bf /drivers/pci/pci-acpi.c
parent3737b2b1046900660b42e25c904b85e78139d25b (diff)
downloadop-kernel-dev-961d9120fa6f078492a1c762dd91f2c097e56c83.zip
op-kernel-dev-961d9120fa6f078492a1c762dd91f2c097e56c83.tar.gz
PCI: Introduce platform_pci_power_manageable function
Introduce function pointer platform_pci_power_manageable to be used by the platform-related code to point to a function allowing us to check if given device is power manageable by the platform. Introduce acpi_pci_power_manageable() playing that role for ACPI. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/pci-acpi.c')
-rw-r--r--drivers/pci/pci-acpi.c19
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 056ea80..e4df71a 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -215,7 +215,6 @@ acpi_status pci_osc_control_set(acpi_handle handle, u32 flags)
}
EXPORT_SYMBOL(pci_osc_control_set);
-#ifdef CONFIG_ACPI_SLEEP
/*
* _SxD returns the D-state with the highest power
* (lowest D-state number) supported in the S-state "x".
@@ -259,7 +258,13 @@ static pci_power_t acpi_pci_choose_state(struct pci_dev *pdev)
}
return PCI_POWER_ERROR;
}
-#endif
+
+static bool acpi_pci_power_manageable(struct pci_dev *dev)
+{
+ acpi_handle handle = DEVICE_ACPI_HANDLE(&dev->dev);
+
+ return handle ? acpi_bus_power_manageable(handle) : false;
+}
static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
{
@@ -290,6 +295,11 @@ static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
return -EINVAL;
}
+static struct pci_platform_pm_ops acpi_pci_platform_pm = {
+ .is_manageable = acpi_pci_power_manageable,
+ .set_state = acpi_pci_set_power_state,
+ .choose_state = acpi_pci_choose_state,
+};
/* ACPI bus type */
static int acpi_pci_find_device(struct device *dev, acpi_handle *handle)
@@ -341,10 +351,7 @@ static int __init acpi_pci_init(void)
ret = register_acpi_bus_type(&acpi_pci_bus);
if (ret)
return 0;
-#ifdef CONFIG_ACPI_SLEEP
- platform_pci_choose_state = acpi_pci_choose_state;
-#endif
- platform_pci_set_power_state = acpi_pci_set_power_state;
+ pci_set_platform_pm(&acpi_pci_platform_pm);
return 0;
}
arch_initcall(acpi_pci_init);
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