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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-02-11 03:35:46 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-02-11 03:35:46 +0400
commit9cb32acf095e806e864c29d060dd79580fcd3d4f (patch)
tree5e60c07a4a793f9a15ffa347ba2b93f907f7d17a /include/acpi
parent2d984ad132a87ca2112f81f21039493176a8bca0 (diff)
downloadlinux-9cb32acf095e806e864c29d060dd79580fcd3d4f.tar.xz
ACPI / scan: Add bind/unbind callbacks to struct acpi_scan_handler
In some cases it may be necessary to perform certain setup/cleanup operations on a device object representing a physical device after it has been associated with an ACPI companion by acpi_bind_one() or before disassociating it from that companion by acpi_unbind_one(), respectively. If there is a struct acpi_bus_type object for the given device's bus type, the .setup()/.cleanup() callbacks from there are executed for these purposes. However, an analogous mechanism will be necessary for devices whose bus types don't have corresponding struct acpi_bus_type objects and that have specific ACPI scan handlers. For those devices, add new .bind() and .unbind() callbacks to struct acpi_scan_handler that will be executed by acpi_platform_notify() right after the given device has been associated with an ACPI comapnion and by acpi_platform_notify_remove() right before calling acpi_unbind_one() for that device, respectively. To make that work for scan handlers registering new devices in their .attach() callbacks, modify acpi_scan_attach_handler() to set the ACPI device object's handler field before calling .attach() from the scan handler at hand. This changeset includes a fix from Mika Westerberg. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/acpi_bus.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 8256eb4ad057..c93bce469492 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -133,6 +133,8 @@ struct acpi_scan_handler {
struct list_head list_node;
int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
void (*detach)(struct acpi_device *dev);
+ void (*bind)(struct device *phys_dev);
+ void (*unbind)(struct device *phys_dev);
struct acpi_hotplug_profile hotplug;
};