devres: device resource management

[powerpc.git] / include / linux / device.h

diff --git a/include/linux/device.h b/include/linux/device.h
index 5ca1cdb..26e4692 100644 (file)
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -354,6 +354,41 @@ extern int __must_check device_create_bin_file(struct device *dev,
                                               struct bin_attribute *attr);
 extern void device_remove_bin_file(struct device *dev,
                                   struct bin_attribute *attr);
+
+/* device resource management */
+typedef void (*dr_release_t)(struct device *dev, void *res);
+typedef int (*dr_match_t)(struct device *dev, void *res, void *match_data);
+
+#ifdef CONFIG_DEBUG_DEVRES
+extern void * __devres_alloc(dr_release_t release, size_t size, gfp_t gfp,
+                            const char *name);
+#define devres_alloc(release, size, gfp) \
+       __devres_alloc(release, size, gfp, #release)
+#else
+extern void * devres_alloc(dr_release_t release, size_t size, gfp_t gfp);
+#endif
+extern void devres_free(void *res);
+extern void devres_add(struct device *dev, void *res);
+extern void * devres_find(struct device *dev, dr_release_t release,
+                         dr_match_t match, void *match_data);
+extern void * devres_get(struct device *dev, void *new_res,
+                        dr_match_t match, void *match_data);
+extern void * devres_remove(struct device *dev, dr_release_t release,
+                           dr_match_t match, void *match_data);
+extern int devres_destroy(struct device *dev, dr_release_t release,
+                         dr_match_t match, void *match_data);
+
+/* devres group */
+extern void * __must_check devres_open_group(struct device *dev, void *id,
+                                            gfp_t gfp);
+extern void devres_close_group(struct device *dev, void *id);
+extern void devres_remove_group(struct device *dev, void *id);
+extern int devres_release_group(struct device *dev, void *id);
+
+/* managed kzalloc/kfree for device drivers, no kmalloc, always use kzalloc */
+extern void *devm_kzalloc(struct device *dev, size_t size, gfp_t gfp);
+extern void devm_kfree(struct device *dev, void *p);
+
 struct device {
        struct klist            klist_children;
        struct klist_node       knode_parent;           /* node in sibling list */
@@ -397,6 +432,9 @@ struct device {
        /* arch specific additions */
        struct dev_archdata     archdata;
 
+       spinlock_t              devres_lock;
+       struct list_head        devres_head;
+
        /* class_device migration path */
        struct list_head        node;
        struct class            *class;