FreeBSD/Linux Kernel Cross Reference
sys/dev/hid/hsctrl.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2020 Vladimir Kondratyev <wulf@FreeBSD.org>
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    /*
     * General Desktop/System Controls usage page driver
     * https://www.usb.org/sites/default/files/documents/hut1_12v2.pdf
     */
    
    #include <sys/param.h>
    #include <sys/bitstring.h>
    #include <sys/bus.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <sys/sysctl.h>
    
    #include <dev/evdev/input.h>
    #include <dev/evdev/evdev.h>
    
    #include <dev/hid/hid.h>
    #include <dev/hid/hidbus.h>
    #include <dev/hid/hidmap.h>
    
    #define HSCTRL_MAP(usage, code) \
            { HIDMAP_KEY(HUP_GENERIC_DESKTOP, HUG_SYSTEM_##usage, code) }
    
    static const struct hidmap_item hsctrl_map[] = {
            HSCTRL_MAP(POWER_DOWN,          KEY_POWER),
            HSCTRL_MAP(SLEEP,               KEY_SLEEP),
            HSCTRL_MAP(WAKEUP,              KEY_WAKEUP),
            HSCTRL_MAP(CONTEXT_MENU,        KEY_CONTEXT_MENU),
            HSCTRL_MAP(MAIN_MENU,           KEY_MENU),
            HSCTRL_MAP(APP_MENU,            KEY_PROG1),
            HSCTRL_MAP(MENU_HELP,           KEY_HELP),
            HSCTRL_MAP(MENU_EXIT,           KEY_EXIT),
            HSCTRL_MAP(MENU_SELECT,         KEY_SELECT),
            HSCTRL_MAP(MENU_RIGHT,          KEY_RIGHT),
            HSCTRL_MAP(MENU_LEFT,           KEY_LEFT),
            HSCTRL_MAP(MENU_UP,             KEY_UP),
            HSCTRL_MAP(MENU_DOWN,           KEY_DOWN),
            HSCTRL_MAP(POWER_UP,            KEY_POWER2),
            HSCTRL_MAP(RESTART,             KEY_RESTART),
    };
    
    static const struct hid_device_id hsctrl_devs[] = {
            { HID_TLC(HUP_GENERIC_DESKTOP, HUG_SYSTEM_CONTROL) },
    };
    
    static int
    hsctrl_probe(device_t dev)
    {
            return (HIDMAP_PROBE(device_get_softc(dev), dev,
                hsctrl_devs, hsctrl_map, "System Control"));
    }
    
    static int
    hsctrl_attach(device_t dev)
    {
            return (hidmap_attach(device_get_softc(dev)));
    }
    
    static int
    hsctrl_detach(device_t dev)
    {
            return (hidmap_detach(device_get_softc(dev)));
    }
    
    static device_method_t hsctrl_methods[] = {
            DEVMETHOD(device_probe,         hsctrl_probe),
            DEVMETHOD(device_attach,        hsctrl_attach),
            DEVMETHOD(device_detach,        hsctrl_detach),
    
            DEVMETHOD_END
   };
   
   DEFINE_CLASS_0(hsctrl, hsctrl_driver, hsctrl_methods, sizeof(struct hidmap));
   DRIVER_MODULE(hsctrl, hidbus, hsctrl_driver, NULL, NULL);
   MODULE_DEPEND(hsctrl, hid, 1, 1, 1);
   MODULE_DEPEND(hsctrl, hidbus, 1, 1, 1);
   MODULE_DEPEND(hsctrl, hidmap, 1, 1, 1);
   MODULE_DEPEND(hsctrl, evdev, 1, 1, 1);
   MODULE_VERSION(hsctrl, 1);
   HID_PNP_INFO(hsctrl_devs);

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