1 files changed, 116 insertions, 0 deletions
diff --git a/drivers/usb/musb/musb_gadget.h b/drivers/usb/musb/musb_gadget.h
new file mode 100644
index 0000000000..f49f25b3bf
--- /dev/null
+++ b/drivers/usb/musb/musb_gadget.h
@@ -0,0 +1,116 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * MUSB OTG driver peripheral defines
+ *
+ * Copyright 2005 Mentor Graphics Corporation
+ * Copyright (C) 2005-2006 by Texas Instruments
+ * Copyright (C) 2006-2007 Nokia Corporation
+ */
+
+#ifndef __MUSB_GADGET_H
+#define __MUSB_GADGET_H
+
+#include <linux/list.h>
+
+#if IS_ENABLED(CONFIG_USB_MUSB_GADGET) || IS_ENABLED(CONFIG_USB_MUSB_DUAL_ROLE)
+extern irqreturn_t musb_g_ep0_irq(struct musb *);
+extern void musb_g_tx(struct musb *, u8);
+extern void musb_g_rx(struct musb *, u8);
+extern void musb_g_reset(struct musb *);
+extern void musb_g_suspend(struct musb *);
+extern void musb_g_resume(struct musb *);
+extern void musb_g_wakeup(struct musb *);
+extern void musb_g_disconnect(struct musb *);
+extern void musb_gadget_cleanup(struct musb *);
+extern int musb_gadget_setup(struct musb *);
+
+#else
+static inline irqreturn_t musb_g_ep0_irq(struct musb *musb)
+{
+	return 0;
+}
+
+static inline void musb_g_tx(struct musb *musb, u8 epnum)	{}
+static inline void musb_g_rx(struct musb *musb, u8 epnum)	{}
+static inline void musb_g_reset(struct musb *musb)		{}
+static inline void musb_g_suspend(struct musb *musb)		{}
+static inline void musb_g_resume(struct musb *musb)		{}
+static inline void musb_g_wakeup(struct musb *musb)		{}
+static inline void musb_g_disconnect(struct musb *musb)		{}
+static inline void musb_gadget_cleanup(struct musb *musb)	{}
+static inline int musb_gadget_setup(struct musb *musb)
+{
+	return 0;
+}
+#endif
+
+enum buffer_map_state {
+	UN_MAPPED = 0,
+	PRE_MAPPED,
+	MUSB_MAPPED
+};
+
+struct musb_request {
+	struct usb_request	request;
+	struct list_head	list;
+	struct musb_ep		*ep;
+	struct musb		*musb;
+	u8 tx;			/* endpoint direction */
+	u8 epnum;
+	enum buffer_map_state map_state;
+};
+
+#define to_musb_request(r)	container_of((r), struct musb_request, request)
+
+extern struct usb_request *
+musb_alloc_request(struct usb_ep *ep, gfp_t gfp_flags);
+extern void musb_free_request(struct usb_ep *ep, struct usb_request *req);
+
+
+/*
+ * struct musb_ep - peripheral side view of endpoint rx or tx side
+ */
+struct musb_ep {
+	/* stuff towards the head is basically write-once. */
+	struct usb_ep			end_point;
+	char				name[12];
+	struct musb_hw_ep		*hw_ep;
+	struct musb			*musb;
+	u8				current_epnum;
+
+	/* ... when enabled/disabled ... */
+	u8				type;
+	u8				is_in;
+	u16				packet_sz;
+	const struct usb_endpoint_descriptor	*desc;
+	struct dma_channel		*dma;
+
+	/* later things are modified based on usage */
+	struct list_head		req_list;
+
+	u8				wedged;
+
+	/* true if lock must be dropped but req_list may not be advanced */
+	u8				busy;
+
+	u8				hb_mult;
+};
+
+#define to_musb_ep(ep)	container_of((ep), struct musb_ep, end_point)
+
+static inline struct musb_request *next_request(struct musb_ep *ep)
+{
+	struct list_head	*queue = &ep->req_list;
+
+	if (list_empty(queue))
+		return NULL;
+	return container_of(queue->next, struct musb_request, list);
+}
+
+extern const struct usb_ep_ops musb_g_ep0_ops;
+
+extern void musb_g_giveback(struct musb_ep *, struct usb_request *, int);
+
+extern void musb_ep_restart(struct musb *, struct musb_request *);
+
+#endif		/* __MUSB_GADGET_H */