diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2012-12-23 03:02:54 +0400 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-01-03 16:09:41 +0400 |
| commit | 38a9a67a281eeebcd7cccf87f0e371f58ae625e3 (patch) | |
| tree | 91f8dd1862d8f46739d01d89299eed82fe3a6545 /drivers/pci/pci-acpi.c | |
| parent | d2e5f0c16ad60a7208fd371233e63b73c990ece2 (diff) | |
| download | linux-38a9a67a281eeebcd7cccf87f0e371f58ae625e3.tar.xz | |
ACPI / PCI: Move the _PRT setup and cleanup code to pci-acpi.c
Move the code related to _PRT setup and removal and to power
resources from acpi_pci_bind() and acpi_pci_unbind() to the .setup()
and .cleanup() callbacks in acpi_pci_bus and remove acpi_pci_bind()
and acpi_pci_unbind() that have no purpose any more. Accordingly,
remove the code related to device .bind() and .unbind() operations
from the ACPI PCI root bridge driver.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Toshi Kani <toshi.kani@hp.com>
Diffstat (limited to 'drivers/pci/pci-acpi.c')
| -rw-r--r-- | drivers/pci/pci-acpi.c | 44 |
1 files changed, 36 insertions, 8 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index b98106c110e7..42736e213f25 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -320,12 +320,33 @@ static int acpi_pci_find_root_bridge(struct device *dev, acpi_handle *handle) return 0; } -static void acpi_pci_wakeup_setup(struct device *dev) +static void pci_acpi_setup(struct device *dev) { - struct acpi_device *adev = acpi_dev_pm_get_node(dev); struct pci_dev *pci_dev = to_pci_dev(dev); + acpi_handle handle = ACPI_HANDLE(dev); + struct acpi_device *adev; + acpi_status status; + acpi_handle dummy; - if (!adev || !adev->wakeup.flags.valid) + /* + * Evaluate and parse _PRT, if exists. This code allows parsing of + * _PRT objects within the scope of non-bridge devices. Note that + * _PRTs within the scope of a PCI bridge assume the bridge's + * subordinate bus number. + * + * TBD: Can _PRTs exist within the scope of non-bridge PCI devices? + */ + status = acpi_get_handle(handle, METHOD_NAME__PRT, &dummy); + if (ACPI_SUCCESS(status)) { + unsigned char bus; + + bus = pci_dev->subordinate ? + pci_dev->subordinate->number : pci_dev->bus->number; + acpi_pci_irq_add_prt(handle, pci_domain_nr(pci_dev->bus), bus); + } + + acpi_power_resource_register_device(dev, handle); + if (acpi_bus_get_device(handle, &adev) || !adev->wakeup.flags.valid) return; device_set_wakeup_capable(dev, true); @@ -336,23 +357,30 @@ static void acpi_pci_wakeup_setup(struct device *dev) device_set_run_wake(dev, true); } -static void acpi_pci_wakeup_cleanup(struct device *dev) +static void pci_acpi_cleanup(struct device *dev) { - struct acpi_device *adev = acpi_dev_pm_get_node(dev); + struct pci_dev *pci_dev = to_pci_dev(dev); + acpi_handle handle = ACPI_HANDLE(dev); + struct acpi_device *adev; - if (adev && adev->wakeup.flags.valid) { + if (!acpi_bus_get_device(handle, &adev) && adev->wakeup.flags.valid) { device_set_wakeup_capable(dev, false); device_set_run_wake(dev, false); pci_acpi_remove_pm_notifier(adev); } + acpi_power_resource_unregister_device(dev, handle); + + if (pci_dev->subordinate) + acpi_pci_irq_del_prt(pci_domain_nr(pci_dev->bus), + pci_dev->subordinate->number); } static struct acpi_bus_type acpi_pci_bus = { .bus = &pci_bus_type, .find_device = acpi_pci_find_device, .find_bridge = acpi_pci_find_root_bridge, - .setup = acpi_pci_wakeup_setup, - .cleanup = acpi_pci_wakeup_cleanup, + .setup = pci_acpi_setup, + .cleanup = pci_acpi_cleanup, }; static int __init acpi_pci_init(void) |