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fa71f32b5d
The old hdev->hid_get_raw_report() was broken by design. It was never clear what kind of HW request it should trigger. Benjamin fixed that with the core HID cleanup, though we never really adjusted uhid. Unfortunately, our old UHID_FEATURE command was modelled around the broken hid_get_raw_report(). We converted it silently to the new GET_REPORT and nothing broke. Make this explicit by renaming UHID_FEATURE to UHID_GET_REPORT and UHID_FEATURE_ANSWER to UHID_GET_REPORT_REPLY. Note that this is 100% ABI compatible to UHID_FEATURE. This is just a rename. But we have to keep the old definitions around to not break API. >From now on, UHID_GET_REPORT must trigger a GET_REPORT request on the user-space hardware layer. All the ambiguity due to the weird "feature" name should be gone now. Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
149 lines
3.2 KiB
C
149 lines
3.2 KiB
C
#ifndef __UHID_H_
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#define __UHID_H_
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/*
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* User-space I/O driver support for HID subsystem
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* Copyright (c) 2012 David Herrmann
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*/
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*/
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/*
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* Public header for user-space communication. We try to keep every structure
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* aligned but to be safe we also use __attribute__((__packed__)). Therefore,
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* the communication should be ABI compatible even between architectures.
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*/
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#include <linux/input.h>
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#include <linux/types.h>
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#include <linux/hid.h>
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enum uhid_event_type {
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UHID_CREATE,
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UHID_DESTROY,
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UHID_START,
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UHID_STOP,
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UHID_OPEN,
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UHID_CLOSE,
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UHID_OUTPUT,
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UHID_OUTPUT_EV, /* obsolete! */
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UHID_INPUT,
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UHID_FEATURE, /* obsolete! use UHID_GET_REPORT */
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UHID_GET_REPORT = UHID_FEATURE,
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UHID_FEATURE_ANSWER, /* obsolete! use UHID_GET_REPORT_REPLY */
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UHID_GET_REPORT_REPLY = UHID_FEATURE_ANSWER,
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UHID_CREATE2,
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UHID_INPUT2,
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};
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struct uhid_create_req {
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__u8 name[128];
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__u8 phys[64];
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__u8 uniq[64];
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__u8 __user *rd_data;
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__u16 rd_size;
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__u16 bus;
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__u32 vendor;
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__u32 product;
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__u32 version;
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__u32 country;
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} __attribute__((__packed__));
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struct uhid_create2_req {
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__u8 name[128];
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__u8 phys[64];
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__u8 uniq[64];
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__u16 rd_size;
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__u16 bus;
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__u32 vendor;
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__u32 product;
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__u32 version;
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__u32 country;
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__u8 rd_data[HID_MAX_DESCRIPTOR_SIZE];
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} __attribute__((__packed__));
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#define UHID_DATA_MAX 4096
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enum uhid_report_type {
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UHID_FEATURE_REPORT,
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UHID_OUTPUT_REPORT,
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UHID_INPUT_REPORT,
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};
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struct uhid_input_req {
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__u8 data[UHID_DATA_MAX];
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__u16 size;
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} __attribute__((__packed__));
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struct uhid_input2_req {
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__u16 size;
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__u8 data[UHID_DATA_MAX];
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} __attribute__((__packed__));
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struct uhid_output_req {
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__u8 data[UHID_DATA_MAX];
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__u16 size;
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__u8 rtype;
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} __attribute__((__packed__));
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/* Obsolete! Newer kernels will no longer send these events but instead convert
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* it into raw output reports via UHID_OUTPUT. */
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struct uhid_output_ev_req {
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__u16 type;
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__u16 code;
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__s32 value;
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} __attribute__((__packed__));
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/* Obsolete! Kernel uses ABI compatible UHID_GET_REPORT. */
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struct uhid_feature_req {
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__u32 id;
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__u8 rnum;
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__u8 rtype;
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} __attribute__((__packed__));
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struct uhid_get_report_req {
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__u32 id;
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__u8 rnum;
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__u8 rtype;
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} __attribute__((__packed__));
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/* Obsolete! Use ABI compatible UHID_GET_REPORT_REPLY. */
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struct uhid_feature_answer_req {
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__u32 id;
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__u16 err;
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__u16 size;
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__u8 data[UHID_DATA_MAX];
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} __attribute__((__packed__));
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struct uhid_get_report_reply_req {
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__u32 id;
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__u16 err;
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__u16 size;
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__u8 data[UHID_DATA_MAX];
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} __attribute__((__packed__));
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struct uhid_event {
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__u32 type;
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union {
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struct uhid_create_req create;
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struct uhid_input_req input;
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struct uhid_output_req output;
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struct uhid_output_ev_req output_ev;
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struct uhid_feature_req feature;
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struct uhid_get_report_req get_report;
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struct uhid_feature_answer_req feature_answer;
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struct uhid_get_report_reply_req get_report_reply;
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struct uhid_create2_req create2;
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struct uhid_input2_req input2;
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} u;
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} __attribute__((__packed__));
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#endif /* __UHID_H_ */
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