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Diffstat (limited to 'kernel/drivers/usb/gadget/function/g_zero.h')
-rw-r--r--kernel/drivers/usb/gadget/function/g_zero.h67
1 files changed, 67 insertions, 0 deletions
diff --git a/kernel/drivers/usb/gadget/function/g_zero.h b/kernel/drivers/usb/gadget/function/g_zero.h
new file mode 100644
index 000000000..15f180904
--- /dev/null
+++ b/kernel/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 */