usb: new board-specific USB init interface
This commit unifies board-specific USB initialization implementations
under one symbol (usb_board_init), declaration of which is available in
usb.h.
New API allows selective initialization of USB controllers whenever needed.
Signed-off-by: Mateusz Zalega <m.zalega@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Lukasz Majewski <l.majewski@samsung.com>
diff --git a/include/usb.h b/include/usb.h
index a96ec23..17fb68c 100644
--- a/include/usb.h
+++ b/include/usb.h
@@ -167,10 +167,36 @@
extern void udc_disconnect(void);
-#else
-#error USB Lowlevel not defined
#endif
+/*
+ * You can initialize platform's USB host or device
+ * ports by passing this enum as an argument to
+ * board_usb_init().
+ */
+enum board_usb_init_type {
+ USB_INIT_HOST,
+ USB_INIT_DEVICE
+};
+
+/*
+ * board-specific hardware initialization, called by
+ * usb drivers and u-boot commands
+ *
+ * @param index USB controller number
+ * @param init initializes controller as USB host or device
+ */
+int board_usb_init(int index, enum board_usb_init_type init);
+
+/*
+ * can be used to clean up after failed USB initialization attempt
+ * vide: board_usb_init()
+ *
+ * @param index USB controller number for selective cleanup
+ * @param init board_usb_init_type passed to board_usb_init()
+ */
+int board_usb_cleanup(int index, enum board_usb_init_type init);
+
#ifdef CONFIG_USB_STORAGE
#define USB_MAX_STOR_DEV 5