summaryrefslogtreecommitdiffstats
path: root/drivers/acpi/internal.h
diff options
context:
space:
mode:
authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-01-17 14:11:05 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-01-17 14:11:05 +0100
commit82c7d5efaadf99fb4a26500cd5b59b6fd7659772 (patch)
treebdd905dde94786f58852dcd1aba86d28054257dd /drivers/acpi/internal.h
parentACPI / scan: More straightforward preparation of ACPI device objects (diff)
downloadlinux-82c7d5efaadf99fb4a26500cd5b59b6fd7659772.tar.xz
linux-82c7d5efaadf99fb4a26500cd5b59b6fd7659772.zip
ACPI / scan: Treat power resources in a special way
ACPI power resources need to be treated in a special way by the namespace scanning code, because they need to be ready to use as soon as they have been discovered (even before registering ACPI device nodes using them for power management). For this reason, it doesn't make sense to separate the preparation of struct acpi_device objects representing them in the device hierarchy from the creation of struct acpi_power_resource objects actually used for power resource manipulation. Accordingly, it doesn't make sense to define non-empty .add() and .remove() callbacks in the power resources "driver" (in fact, it is questionable whether or not it is useful to register such a "driver" at all). Rearrange the code in scan.c and power.c so that power resources are initialized entirely by one routine, acpi_add_power_resource(), that also prepares their struct acpi_device objects and registers them with the driver core, telling it to use a special release routine, acpi_release_power_resource(), for removing objects that represent power resources from memory. Make the ACPI namespace scanning code in scan.c always use acpi_add_power_resource() for preparing and registering objects that represent power resources. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/internal.h')
-rw-r--r--drivers/acpi/internal.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index b79b4258bd6b..ce6cb24de8c7 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -35,9 +35,22 @@ static inline void acpi_debugfs_init(void) { return; }
#endif
/* --------------------------------------------------------------------------
+ Device Node Initialization / Removal
+ -------------------------------------------------------------------------- */
+#define ACPI_STA_DEFAULT (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | \
+ ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING)
+
+int acpi_device_register(struct acpi_device *device,
+ void (*release)(struct device *));
+void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
+ int type, unsigned long long sta);
+void acpi_free_ids(struct acpi_device *device);
+
+/* --------------------------------------------------------------------------
Power Resource
-------------------------------------------------------------------------- */
int acpi_power_init(void);
+void acpi_add_power_resource(acpi_handle handle);
void acpi_power_add_remove_device(struct acpi_device *adev, bool add);
int acpi_device_sleep_wake(struct acpi_device *dev,
int enable, int sleep_state, int dev_state);