2 * pci_bind.c - ACPI PCI Device Binding ($Revision: 2 $)
4 * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
5 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or (at
12 * your option) any later version.
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write to the Free Software Foundation, Inc.,
21 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
26 #include <linux/kernel.h>
27 #include <linux/types.h>
28 #include <linux/pci.h>
29 #include <linux/pci-acpi.h>
30 #include <linux/acpi.h>
31 #include <linux/pm_runtime.h>
32 #include <acpi/acpi_bus.h>
33 #include <acpi/acpi_drivers.h>
35 #define _COMPONENT ACPI_PCI_COMPONENT
36 ACPI_MODULE_NAME("pci_bind");
38 static int acpi_pci_unbind(struct acpi_device
*device
)
42 dev
= acpi_get_pci_dev(device
->handle
);
46 device_set_run_wake(&dev
->dev
, false);
47 pci_acpi_remove_pm_notifier(device
);
49 if (!dev
->subordinate
)
52 acpi_pci_irq_del_prt(dev
->subordinate
);
54 device
->ops
.bind
= NULL
;
55 device
->ops
.unbind
= NULL
;
62 static int acpi_pci_bind(struct acpi_device
*device
)
69 dev
= acpi_get_pci_dev(device
->handle
);
73 pci_acpi_add_pm_notifier(device
, dev
);
74 if (device
->wakeup
.flags
.run_wake
)
75 device_set_run_wake(&dev
->dev
, true);
78 * Install the 'bind' function to facilitate callbacks for
79 * children of the P2P bridge.
81 if (dev
->subordinate
) {
82 ACPI_DEBUG_PRINT((ACPI_DB_INFO
,
83 "Device %04x:%02x:%02x.%d is a PCI bridge\n",
84 pci_domain_nr(dev
->bus
), dev
->bus
->number
,
85 PCI_SLOT(dev
->devfn
), PCI_FUNC(dev
->devfn
)));
86 device
->ops
.bind
= acpi_pci_bind
;
87 device
->ops
.unbind
= acpi_pci_unbind
;
91 * Evaluate and parse _PRT, if exists. This code allows parsing of
92 * _PRT objects within the scope of non-bridge devices. Note that
93 * _PRTs within the scope of a PCI bridge assume the bridge's
94 * subordinate bus number.
96 * TBD: Can _PRTs exist within the scope of non-bridge PCI devices?
98 status
= acpi_get_handle(device
->handle
, METHOD_NAME__PRT
, &handle
);
99 if (ACPI_FAILURE(status
))
102 if (dev
->subordinate
)
103 bus
= dev
->subordinate
;
107 acpi_pci_irq_add_prt(device
->handle
, bus
);
114 int acpi_pci_bind_root(struct acpi_device
*device
)
116 device
->ops
.bind
= acpi_pci_bind
;
117 device
->ops
.unbind
= acpi_pci_unbind
;
This page took 0.032669 seconds and 5 git commands to generate.