The behaviour of these two functions is completely undocumented. Add some
notes so the poor, suffering dev can figure out what is going on.
Signed-off-by: Simon Glass <s...@chromium.org>
---
(no changes since v1)
include/menu.h | 42 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)
diff --git a/include/menu.h b/include/menu.h
index 702aacb170c..0b4d9734149 100644
--- a/include/menu.h
+++ b/include/menu.h
@@ -42,6 +42,7 @@ struct bootmenu_data {
struct bootmenu_entry *first; /* first menu entry */
};
+/** enum bootmenu_key - keys that can be returned by the bootmenu */
enum bootmenu_key {
KEY_NONE = 0,
KEY_UP,
@@ -53,8 +54,49 @@ enum bootmenu_key {
KEY_SPACE,
};
+/**
+ * bootmenu_autoboot_loop() - handle autobooting if no key is pressed
+ *
+ * This shows a prompt to allow the user to press a key to interrupt auto boot
+ * of the first menu option.
+ *
+ * It then waits for the required time (menu->delay in seconds) for a key to be
+ * pressed. If nothing is pressed in that time, @key returns KEY_SELECT
+ * indicating that the current option should be chosen.
+ *
+ * @menu: Menu being processed
+ * @key: Returns the code for the key the user pressed:
+ * enter: KEY_SELECT
+ * Ctrl-C: KEY_QUIT
+ * anything else: KEY_NONE
+ * @esc: Set to 1 if the escape key is pressed, otherwise not updated
+ */
void bootmenu_autoboot_loop(struct bootmenu_data *menu,
enum bootmenu_key *key, int *esc);
+
+/**
+ * bootmenu_loop() - handle waiting for a keypress when autoboot is disabled
+ *
+ * This is used when the menu delay is negative, indicating that the delay has
+ * elapsed, or there was no delay to begin with.
+ *
+ * It reads a character and processes it, returning a menu-key code if a
+ * character is recognised
+ *
+ * @menu: Menu being processed
+ * @key: Returns the code for the key the user pressed:
+ * enter: KEY_SELECT
+ * Ctrl-C: KEY_QUIT
+ * Up arrow: KEY_UP
+ * Down arrow: KEY_DOWN
+ * Escape (by itself): KEY_QUIT
+ * Plus: KEY_PLUS
+ * Minus: KEY_MINUS
+ * Space: KEY_SPACE
+ * @esc: On input, a non-zero value indicates that an escape sequence has
+ * resulted in that many characters so far. On exit this is updated to the
+ * new number of characters
+ */
void bootmenu_loop(struct bootmenu_data *menu,
enum bootmenu_key *key, int *esc);
--
2.38.1.431.g37b22c650d-goog
