Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / usb / gadget / function / u_uvc.h

diff --git a/kernel/drivers/usb/gadget/function/u_uvc.h b/kernel/drivers/usb/gadget/function/u_uvc.h
new file mode 100644 (file)
index 0000000..4676b60
--- /dev/null
+++ b/kernel/drivers/usb/gadget/function/u_uvc.h
@@ -0,0 +1,89 @@
+/*
+ * u_uvc.h
+ *
+ * Utility definitions for the uvc function
+ *
+ * Copyright (c) 2013-2014 Samsung Electronics Co., Ltd.
+ *             http://www.samsung.com
+ *
+ * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef U_UVC_H
+#define U_UVC_H
+
+#include <linux/usb/composite.h>
+#include <linux/usb/video.h>
+
+#define fi_to_f_uvc_opts(f)    container_of(f, struct f_uvc_opts, func_inst)
+
+struct f_uvc_opts {
+       struct usb_function_instance                    func_inst;
+       unsigned int                                    uvc_gadget_trace_param;
+       unsigned int                                    streaming_interval;
+       unsigned int                                    streaming_maxpacket;
+       unsigned int                                    streaming_maxburst;
+
+       /*
+        * Control descriptors array pointers for full-/high-speed and
+        * super-speed. They point by default to the uvc_fs_control_cls and
+        * uvc_ss_control_cls arrays respectively. Legacy gadgets must
+        * override them in their gadget bind callback.
+        */
+       const struct uvc_descriptor_header * const      *fs_control;
+       const struct uvc_descriptor_header * const      *ss_control;
+
+       /*
+        * Streaming descriptors array pointers for full-speed, high-speed and
+        * super-speed. They will point to the uvc_[fhs]s_streaming_cls arrays
+        * for configfs-based gadgets. Legacy gadgets must initialize them in
+        * their gadget bind callback.
+        */
+       const struct uvc_descriptor_header * const      *fs_streaming;
+       const struct uvc_descriptor_header * const      *hs_streaming;
+       const struct uvc_descriptor_header * const      *ss_streaming;
+
+       /* Default control descriptors for configfs-based gadgets. */
+       struct uvc_camera_terminal_descriptor           uvc_camera_terminal;
+       struct uvc_processing_unit_descriptor           uvc_processing;
+       struct uvc_output_terminal_descriptor           uvc_output_terminal;
+       struct uvc_color_matching_descriptor            uvc_color_matching;
+
+       /*
+        * Control descriptors pointers arrays for full-/high-speed and
+        * super-speed. The first element is a configurable control header
+        * descriptor, the other elements point to the fixed default control
+        * descriptors. Used by configfs only, must not be touched by legacy
+        * gadgets.
+        */
+       struct uvc_descriptor_header                    *uvc_fs_control_cls[5];
+       struct uvc_descriptor_header                    *uvc_ss_control_cls[5];
+
+       /*
+        * Streaming descriptors for full-speed, high-speed and super-speed.
+        * Used by configfs only, must not be touched by legacy gadgets. The
+        * arrays are allocated at runtime as the number of descriptors isn't
+        * known in advance.
+        */
+       struct uvc_descriptor_header                    **uvc_fs_streaming_cls;
+       struct uvc_descriptor_header                    **uvc_hs_streaming_cls;
+       struct uvc_descriptor_header                    **uvc_ss_streaming_cls;
+
+       /*
+        * Read/write access to configfs attributes is handled by configfs.
+        *
+        * This lock protects the descriptors from concurrent access by
+        * read/write and symlink creation/removal.
+        */
+       struct mutex                    lock;
+       int                             refcnt;
+};
+
+void uvc_set_trace_param(unsigned int trace);
+
+#endif /* U_UVC_H */
+