Add a new timeout API to the kernel. Enable only for e200 right now since it's the only user. Use that as the one-shot delay for SD card inserts.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14049 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 22 insertions, 0 deletions

diff --git a/firmware/export/kernel.h b/firmware/export/kernel.h
index b40d602..bf5a9d1 100644
--- a/firmware/export/kernel.h
+++ b/firmware/export/kernel.h
@@ -126,6 +126,28 @@ extern void sleep(int ticks);
 int tick_add_task(void (*f)(void));
 int tick_remove_task(void (*f)(void));
 
+struct timeout;
+
+/* timeout callback type
+ * tmo - pointer to struct timeout associated with event
+ */
+typedef bool (* timeout_cb_type)(struct timeout *tmo);
+
+struct timeout
+{
+    /* for use by callback/internal - read/write */
+    timeout_cb_type callback;/* callback - returning false cancels */
+    int             ticks;   /* timeout period in ticks */
+    intptr_t        data;    /* data passed to callback */
+    /* internal use - read-only */
+    const struct timeout * const next; /* next timeout in list */
+    const long expires; /* expiration tick */
+};
+
+void timeout_register(struct timeout *tmo, timeout_cb_type callback,
+                      int ticks, intptr_t data);
+void timeout_cancel(struct timeout *tmo);
+
 extern void queue_init(struct event_queue *q, bool register_queue);
 #if NUM_CORES > 1
 extern void queue_set_irq_safe(struct event_queue *q, bool state);