1 files changed, 67 insertions, 0 deletions

diff --git a/drivers/usb/gadget/function/g_zero.h b/drivers/usb/gadget/function/g_zero.h
new file mode 100644
index 000000000000..15f180904f8a
--- /dev/null
+++ b/drivers/usb/gadget/function/g_zero.h
@@ -0,0 +1,67 @@
+/*
+ * This header declares the utility functions used by "Gadget Zero", plus
+ * interfaces to its two single-configuration function drivers.
+ */
+
+#ifndef __G_ZERO_H
+#define __G_ZERO_H
+
+#define GZERO_BULK_BUFLEN       4096
+#define GZERO_QLEN              32
+#define GZERO_ISOC_INTERVAL     4
+#define GZERO_ISOC_MAXPACKET    1024
+
+struct usb_zero_options {
+        unsigned pattern;
+        unsigned isoc_interval;
+        unsigned isoc_maxpacket;
+        unsigned isoc_mult;
+        unsigned isoc_maxburst;
+        unsigned bulk_buflen;
+        unsigned qlen;
+};
+
+struct f_ss_opts {
+        struct usb_function_instance func_inst;
+        unsigned pattern;
+        unsigned isoc_interval;
+        unsigned isoc_maxpacket;
+        unsigned isoc_mult;
+        unsigned isoc_maxburst;
+        unsigned bulk_buflen;
+
+        /*
+         * Read/write access to configfs attributes is handled by configfs.
+         *
+         * This is to protect the data from concurrent access by read/write
+         * and create symlink/remove symlink.
+         */
+        struct mutex                    lock;
+        int                             refcnt;
+};
+
+struct f_lb_opts {
+        struct usb_function_instance func_inst;
+        unsigned bulk_buflen;
+        unsigned qlen;
+
+        /*
+         * Read/write access to configfs attributes is handled by configfs.
+         *
+         * This is to protect the data from concurrent access by read/write
+         * and create symlink/remove symlink.
+         */
+        struct mutex                    lock;
+        int                             refcnt;
+};
+
+void lb_modexit(void);
+int lb_modinit(void);
+
+/* common utilities */
+void free_ep_req(struct usb_ep *ep, struct usb_request *req);
+void disable_endpoints(struct usb_composite_dev *cdev,
+                struct usb_ep *in, struct usb_ep *out,
+                struct usb_ep *iso_in, struct usb_ep *iso_out);
+
+#endif /* __G_ZERO_H */