[Pdbg] [PATCH 03/14] libpdbg/target: add a release operation

[Nicholas Piggin]

This will be used to release special wakeup.

Signed-off-by: Nicholas Piggin <npiggin at gmail.com>
---
 libpdbg/target.c | 29 +++++++++++++++++++++++++++++
 libpdbg/target.h |  1 +
 2 files changed, 30 insertions(+)

diff --git a/libpdbg/target.c b/libpdbg/target.c
index 1eb85bb..950aee4 100644
--- a/libpdbg/target.c
+++ b/libpdbg/target.c
@@ -338,6 +338,27 @@ static void _target_probe(struct dt_node *dn)
 	}
 }
 
+static void _target_release(struct dt_node *dn)
+{
+	struct dt_property *p;
+
+	PR_DEBUG("Release %s - ", dn->name);
+	if (!dn->target) {
+		PR_DEBUG("target not found\n");
+		return;
+	}
+
+	p = dt_find_property(dn, "status");
+	if (p && !strcmp(p->prop, "disabled")) {
+		PR_DEBUG("disabled\n");
+		return;
+	}
+
+	if (dn->target->release)
+		dn->target->release(dn->target);
+	PR_DEBUG("success\n");
+}
+
 /* We walk the tree root down disabling targets which might/should
  * exist but don't */
 void pdbg_target_probe(void)
@@ -348,6 +369,14 @@ void pdbg_target_probe(void)
 		_target_probe(dn);
 }
 
+void pdbg_target_release(void)
+{
+	struct dt_node *dn;
+
+	dt_for_each_node(dt_root, dn)
+		_target_release(dn);
+}
+
 bool pdbg_target_is_class(struct pdbg_target *target, const char *class)
 {
 	if (!target || !target->class || !class)
diff --git a/libpdbg/target.h b/libpdbg/target.h
index 0a618e2..99a4d68 100644
--- a/libpdbg/target.h
+++ b/libpdbg/target.h
@@ -43,6 +43,7 @@ struct pdbg_target {
 	char *compatible;
 	char *class;
 	int (*probe)(struct pdbg_target *target);
+	void (*release)(struct pdbg_target *target);
 	int index;
 	struct dt_node *dn;
 	struct list_node class_link;
-- 
2.17.0