Re: [RFC 1/1] HID: User-space I/O driver support for HID subsystem

Hi Marcel

On Fri, Mar 16, 2012 at 5:00 PM, Marcel Holtmann [off-list ref] wrote:

Hi David,

<snip>

quoted

new file mode 100644
index 0000000..1a7df0d

--- /dev/null
+++ b/include/linux/uhid.h

@@ -0,0 +1,71 @@
+#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.
+ */
+
+#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,
+};
+
+struct uhid_create_req {
+     __u8 __user name[128];
+     __u8 __user *rd_data;
+     __u16 rd_size;
+

we need the bus here as well. With HIDP it was implicit, but here it is
no longer implicit.

Uh, yeah, I will add that, thanks. I also need to find a proper way to
get a hid->dev.parent pointer.

quoted

+     __u16 vendor;
+     __u16 product;
+     __u16 version;
+     __u8 country;

What are we using country for these days?

I copied it from HIDP. If we don't need this, I can remove it. USBHID
doesn't use it as far as I can see.

quoted

+};
+
+#define UHID_DATA_MAX 4096
+
+enum uhid_report_type {
+     UHID_FEATURE_REPORT,
+     UHID_OUTPUT_REPORT,
+};
+
+struct uhid_data_req {
+     __u8 data[UHID_DATA_MAX];
+     __u16 size;
+     __u8 rtype;
+};
+
+struct uhid_data_ev_req {
+     __u16 type;
+     __u16 code;
+     __s32 value;
+};
+
+struct uhid_event {
+     __u32 type;
+
+     union {
+             struct uhid_create_req create;
+             struct uhid_data_req data;
+             struct input_event data_ev;
+     } u;
+};
+
+#endif /* __UHID_H_ */

Regards

Marcel

Thanks
David
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