From: Rafael J. Wysocki <rjw@xxxxxxx>
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@xxxxxxx>
---
drivers/pci/pci-acpi.c | 11 +++++++++++
drivers/pci/pci.c | 1 +
drivers/pci/pci.h | 1 +
3 files changed, 13 insertions(+)
Index: linux-2.6/drivers/pci/pci-acpi.c
===================================================================
--- linux-2.6.orig/drivers/pci/pci-acpi.c
+++ linux-2.6/drivers/pci/pci-acpi.c
@@ -315,6 +315,16 @@ static pci_power_t acpi_pci_choose_state
}
#endif
+static bool acpi_pci_power_manageable(struct pci_dev *dev)
+{
+ acpi_handle handle = DEVICE_ACPI_HANDLE(&dev->dev);
+
+ if (!handle)
+ return -ENODEV;
+
+ return acpi_bus_power_manageable(handle);
+}
+
static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
{
acpi_handle handle = DEVICE_ACPI_HANDLE(&dev->dev);
@@ -398,6 +408,7 @@ static int __init acpi_pci_init(void)
#ifdef CONFIG_ACPI_SLEEP
platform_pci_choose_state = acpi_pci_choose_state;
#endif
+ platform_pci_power_manageable = acpi_pci_power_manageable;
platform_pci_set_power_state = acpi_pci_set_power_state;
return 0;
}
Index: linux-2.6/drivers/pci/pci.c
===================================================================
--- linux-2.6.orig/drivers/pci/pci.c
+++ linux-2.6/drivers/pci/pci.c
@@ -378,6 +378,7 @@ pci_restore_bars(struct pci_dev *dev)
pci_update_resource(dev, &dev->resource[i], i);
}
+bool (*platform_pci_power_manageable)(struct pci_dev *dev);
int (*platform_pci_set_power_state)(struct pci_dev *dev, pci_power_t t);
/**
Index: linux-2.6/drivers/pci/pci.h
===================================================================
--- linux-2.6.orig/drivers/pci/pci.h
+++ linux-2.6/drivers/pci/pci.h
@@ -6,6 +6,7 @@ extern void pci_remove_sysfs_dev_files(s
extern void pci_cleanup_rom(struct pci_dev *dev);
/* Firmware callbacks */
+extern bool (*platform_pci_power_manageable)(struct pci_dev *dev);
extern pci_power_t (*platform_pci_choose_state)(struct pci_dev *dev);
extern int (*platform_pci_set_power_state)(struct pci_dev *dev,
pci_power_t state);
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