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104 lines
3.8 KiB
C
104 lines
3.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2021-2022 HandsomeMod Project
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*
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* Handsomeyingyan <handsomeyingyan@gmail.com>
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*
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* GC(Gadget Controller) is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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*/
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#include "gc_hid.h"
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static char report_desc[] = {
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0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
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0x09, 0x06, /* USAGE (Keyboard) */
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0xa1, 0x01, /* COLLECTION (Application) */
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0x05, 0x07, /* USAGE_PAGE (Keyboard) */
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0x19, 0xe0, /* USAGE_MINIMUM (Keyboard LeftControl) */
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0x29, 0xe7, /* USAGE_MAXIMUM (Keyboard Right GUI) */
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0x15, 0x00, /* LOGICAL_MINIMUM (0) */
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0x25, 0x01, /* LOGICAL_MAXIMUM (1) */
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0x75, 0x01, /* REPORT_SIZE (1) */
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0x95, 0x08, /* REPORT_COUNT (8) */
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0x81, 0x02, /* INPUT (Data,Var,Abs) */
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0x95, 0x01, /* REPORT_COUNT (1) */
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0x75, 0x08, /* REPORT_SIZE (8) */
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0x81, 0x03, /* INPUT (Cnst,Var,Abs) */
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0x95, 0x05, /* REPORT_COUNT (5) */
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0x75, 0x01, /* REPORT_SIZE (1) */
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0x05, 0x08, /* USAGE_PAGE (LEDs) */
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0x19, 0x01, /* USAGE_MINIMUM (Num Lock) */
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0x29, 0x05, /* USAGE_MAXIMUM (Kana) */
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0x91, 0x02, /* OUTPUT (Data,Var,Abs) */
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0x95, 0x01, /* REPORT_COUNT (1) */
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0x75, 0x03, /* REPORT_SIZE (3) */
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0x91, 0x03, /* OUTPUT (Cnst,Var,Abs) */
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0x95, 0x06, /* REPORT_COUNT (6) */
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0x75, 0x08, /* REPORT_SIZE (8) */
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0x15, 0x00, /* LOGICAL_MINIMUM (0) */
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0x25, 0x65, /* LOGICAL_MAXIMUM (101) */
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0x05, 0x07, /* USAGE_PAGE (Keyboard) */
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0x19, 0x00, /* USAGE_MINIMUM (Reserved) */
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0x29, 0x65, /* USAGE_MAXIMUM (Keyboard Application) */
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0x81, 0x00, /* INPUT (Data,Ary,Abs) */
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0xc0 /* END_COLLECTION */
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};
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int gc_hid_create(int argc,char *argv[],gc_generic_info info)
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{
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usbg_gadget *gadget = gc_init(info);
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if(gadget == NULL)
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return GC_FAILED;
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usbg_function *f_hid;
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int usbg_ret;
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char *id = gc_generate_id(USBG_F_HID);
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if(id == NULL)
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return GC_FAILED;
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struct usbg_f_hid_attrs f_attrs = {
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.protocol = 1,
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.report_desc = {
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.desc = report_desc,
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.len = sizeof(report_desc),
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},
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.report_length = 8,
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.subclass = 0,
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};
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usbg_ret = usbg_create_function(gadget,USBG_F_HID,id,&f_attrs,&f_hid);
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if(usbg_ret != USBG_SUCCESS){
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fprintf(stderr,"failed to create hid function! (maybe kernel module not loaded?)\n");
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gc_clean();
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return GC_FAILED;
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}
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/* for now we only create one config file in */
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usbg_config *config = gc_get_config(gadget);
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usbg_ret = usbg_add_config_function(config,id,f_hid);
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if(usbg_ret != USBG_SUCCESS){
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fprintf(stderr,"failed to bind hid config to function! \n");
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gc_clean();
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return GC_FAILED;
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}
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usbg_ret = usbg_enable_gadget(gadget, DEFAULT_UDC);
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if(usbg_ret != USBG_SUCCESS){
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fprintf(stderr,"failed to enable gadget! \n");
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gc_clean();
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return GC_FAILED;
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}
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gc_clean();
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return GC_SUCCESS;
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}
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