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dock: introduce .uevent for devices in dock, eg libata

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dock's uevent reported itself, not ata. It might be difficult to find an
ata device just according to a dock. This patch introduces docking ops
for each device in a dock. when docking, dock driver can send device
specific uevent. This should help dock station too (not just bay)

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Shaohua Li
2008-08-28 10:06:16 +08:00
committed by Len Brown
parent f730ae1838
commit 1253f7aabf
4 changed files with 68 additions and 13 deletions
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22
drivers/acpi/dock.c
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@ -75,7 +75,7 @@ struct dock_dependent_device {
struct list_head list;
struct list_head hotplug_list;
acpi_handle handle;
acpi_notify_handler handler;
struct acpi_dock_ops *ops;
void *context;
};
@ -385,8 +385,8 @@ static void hotplug_dock_devices(struct dock_station *ds, u32 event)
* First call driver specific hotplug functions
*/
list_for_each_entry(dd, &ds->hotplug_devices, hotplug_list) {
if (dd->handler)
dd->handler(dd->handle, event, dd->context);
if (dd->ops && dd->ops->handler)
dd->ops->handler(dd->handle, event, dd->context);
}
/*
@ -409,6 +409,7 @@ static void dock_event(struct dock_station *ds, u32 event, int num)
struct device *dev = &ds->dock_device->dev;
char event_string[13];
char *envp[] = { event_string, NULL };
struct dock_dependent_device *dd;
if (num == UNDOCK_EVENT)
sprintf(event_string, "EVENT=undock");
@ -419,7 +420,14 @@ static void dock_event(struct dock_station *ds, u32 event, int num)
* Indicate that the status of the dock station has
* changed.
*/
kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
if (num == DOCK_EVENT)
kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
list_for_each_entry(dd, &ds->hotplug_devices, hotplug_list)
if (dd->ops && dd->ops->uevent)
dd->ops->uevent(dd->handle, event, dd->context);
if (num != DOCK_EVENT)
kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
}
/**
@ -588,7 +596,7 @@ EXPORT_SYMBOL_GPL(unregister_dock_notifier);
/**
* register_hotplug_dock_device - register a hotplug function
* @handle: the handle of the device
* @handler: the acpi_notifier_handler to call after docking
* @ops: handlers to call after docking
* @context: device specific data
*
* If a driver would like to perform a hotplug operation after a dock
@ -596,7 +604,7 @@ EXPORT_SYMBOL_GPL(unregister_dock_notifier);
* the dock driver after _DCK is executed.
*/
int
register_hotplug_dock_device(acpi_handle handle, acpi_notify_handler handler,
register_hotplug_dock_device(acpi_handle handle, struct acpi_dock_ops *ops,
void *context)
{
struct dock_dependent_device *dd;
@ -612,7 +620,7 @@ register_hotplug_dock_device(acpi_handle handle, acpi_notify_handler handler,
list_for_each_entry(dock_station, &dock_stations, sibiling) {
dd = find_dock_dependent_device(dock_station, handle);
if (dd) {
dd->handler = handler;
dd->ops = ops;
dd->context = context;
dock_add_hotplug_device(dock_station, dd);
return 0;