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Commit 76d56de5 authored by Alex Chiang's avatar Alex Chiang Committed by Jesse Barnes
Browse files

ACPI: export acpi_pci_root and friends 



We can simplify ACPI drivers if we can tell whether a handle is an
ACPI PCI root or not.

Reviewed-by: default avatarBjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: default avatarAlex Chiang <achiang@hp.com>
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
parent 2547089c

drivers/acpi/pci_root.c

+2 −15
Original line number Diff line number Diff line
@@ -61,20 +61,6 @@ static struct acpi_driver acpi_pci_root_driver = { 
		},

};



struct acpi_pci_root {

	struct list_head node;

	struct acpi_device *device;

	struct pci_bus *bus;

	u16 segment;

	u8 bus_nr;



	u32 osc_support_set;	/* _OSC state of support bits */

	u32 osc_control_set;	/* _OSC state of control bits */

	u32 osc_control_qry;	/* the latest _OSC query result */



	u32 osc_queried:1;	/* has _OSC control been queried? */

};



static LIST_HEAD(acpi_pci_roots);



static struct acpi_pci_driver *sub_driver;
@@ -317,7 +303,7 @@ static acpi_status acpi_pci_osc_support(struct acpi_pci_root *root, u32 flags) 
	return status;

}



static struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle)

struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle)

{

	struct acpi_pci_root *root;
@@ -327,6 +313,7 @@ static struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle) 
	}

	return NULL;

}

EXPORT_SYMBOL_GPL(acpi_pci_find_root);



struct acpi_handle_node {

	struct list_head node;

include/acpi/acpi_bus.h

+16 −0
Original line number Diff line number Diff line
@@ -369,10 +369,26 @@ int register_acpi_bus_type(struct acpi_bus_type *); 
int unregister_acpi_bus_type(struct acpi_bus_type *);

struct device *acpi_get_physical_device(acpi_handle);



struct acpi_pci_root {

	struct list_head node;

	struct acpi_device * device;

	struct acpi_pci_id id;

	struct pci_bus *bus;

	u16 segment;

	u8 bus_nr;



	u32 osc_support_set;	/* _OSC state of support bits */

	u32 osc_control_set;	/* _OSC state of control bits */

	u32 osc_control_qry;	/* the latest _OSC query result */



	u32 osc_queried:1;	/* has _OSC control been queried? */

};



/* helper */

acpi_handle acpi_get_child(acpi_handle, acpi_integer);

int acpi_is_root_bridge(acpi_handle);

acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);

struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);

#define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->archdata.acpi_handle))



#ifdef CONFIG_PM_SLEEP