2 files changed, 105 insertions, 0 deletions
diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index 8760be30b375..cb2a7d1ad47b 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -376,6 +376,7 @@ header-y += tty.h
 header-y += types.h
 header-y += udf_fs_i.h
 header-y += udp.h
+header-y += uhid.h
 header-y += uinput.h
 header-y += uio.h
 header-y += ultrasound.h
diff --git a/include/linux/uhid.h b/include/linux/uhid.h
new file mode 100644
index 000000000000..9c6974f16966
--- /dev/null
+++ b/include/linux/uhid.h
@@ -0,0 +1,104 @@
+#ifndef __UHID_H_
+#define __UHID_H_
+
+/*
+ * User-space I/O driver support for HID subsystem
+ * Copyright (c) 2012 David Herrmann
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+/*
+ * Public header for user-space communication. We try to keep every structure
+ * aligned but to be safe we also use __attribute__((__packed__)). Therefore,
+ * the communication should be ABI compatible even between architectures.
+ */
+
+#include <linux/input.h>
+#include <linux/types.h>
+
+enum uhid_event_type {
+	UHID_CREATE,
+	UHID_DESTROY,
+	UHID_START,
+	UHID_STOP,
+	UHID_OPEN,
+	UHID_CLOSE,
+	UHID_OUTPUT,
+	UHID_OUTPUT_EV,
+	UHID_INPUT,
+	UHID_FEATURE,
+	UHID_FEATURE_ANSWER,
+};
+
+struct uhid_create_req {
+	__u8 name[128];
+	__u8 phys[64];
+	__u8 uniq[64];
+	__u8 __user *rd_data;
+	__u16 rd_size;
+
+	__u16 bus;
+	__u32 vendor;
+	__u32 product;
+	__u32 version;
+	__u32 country;
+} __attribute__((__packed__));
+
+#define UHID_DATA_MAX 4096
+
+enum uhid_report_type {
+	UHID_FEATURE_REPORT,
+	UHID_OUTPUT_REPORT,
+	UHID_INPUT_REPORT,
+};
+
+struct uhid_input_req {
+	__u8 data[UHID_DATA_MAX];
+	__u16 size;
+} __attribute__((__packed__));
+
+struct uhid_output_req {
+	__u8 data[UHID_DATA_MAX];
+	__u16 size;
+	__u8 rtype;
+} __attribute__((__packed__));
+
+struct uhid_output_ev_req {
+	__u16 type;
+	__u16 code;
+	__s32 value;
+} __attribute__((__packed__));
+
+struct uhid_feature_req {
+	__u32 id;
+	__u8 rnum;
+	__u8 rtype;
+} __attribute__((__packed__));
+
+struct uhid_feature_answer_req {
+	__u32 id;
+	__u16 err;
+	__u16 size;
+	__u8 data[UHID_DATA_MAX];
+};
+
+struct uhid_event {
+	__u32 type;
+
+	union {
+		struct uhid_create_req create;
+		struct uhid_input_req input;
+		struct uhid_output_req output;
+		struct uhid_output_ev_req output_ev;
+		struct uhid_feature_req feature;
+		struct uhid_feature_answer_req feature_answer;
+	} u;
+} __attribute__((__packed__));
+
+#endif /* __UHID_H_ */