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of/reconfig: Add of_reconfig_get_state_change() of notifier helper.

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Introduce of_reconfig_get_state_change() which allows an of notifier
to query about device state changes.

Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
This commit is contained in:
Pantelis Antoniou 2014-10-28 22:33:53 +02:00 • committed by Grant Likely
parent da56d04c80
commit b53a2340d0
2 changed files with 103 additions and 0 deletions
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7
include/linux/of.h
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@ -327,6 +327,7 @@ struct of_prop_reconfig {
extern int of_reconfig_notifier_register(struct notifier_block *);
extern int of_reconfig_notifier_unregister(struct notifier_block *);
extern int of_reconfig_notify(unsigned long, void *);
extern int of_reconfig_get_state_change(unsigned long action, void *arg);
extern int of_attach_node(struct device_node *);
extern int of_detach_node(struct device_node *);
@ -887,6 +888,12 @@ struct of_changeset {
struct list_head entries;
};
enum of_reconfig_change {
OF_RECONFIG_NO_CHANGE = 0,
OF_RECONFIG_CHANGE_ADD,
OF_RECONFIG_CHANGE_REMOVE,
};
#ifdef CONFIG_OF_DYNAMIC
extern void of_changeset_init(struct of_changeset *ocs);
extern void of_changeset_destroy(struct of_changeset *ocs);