hgame.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2020 Vladimir Kondratyev <wulf@FreeBSD.org>
    5  * Copyright (c) 2020 Val Packett <val@packett.cool>
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD$");
   31 
   32 /*
   33  * Generic HID game controller (joystick/gamepad) driver,
   34  */
   35 
   36 #include <sys/param.h>
   37 #include <sys/bus.h>
   38 #include <sys/kernel.h>
   39 #include <sys/module.h>
   40 #include <sys/sysctl.h>
   41 
   42 #include <dev/evdev/input.h>
   43 #include <dev/evdev/evdev.h>
   44 
   45 #include <dev/hid/hgame.h>
   46 #include <dev/hid/hid.h>
   47 #include <dev/hid/hidbus.h>
   48 #include <dev/hid/hidquirk.h>
   49 #include <dev/hid/hidmap.h>
   50 
   51 #define HGAME_MAP_BRG(number_from, number_to, code)     \
   52         { HIDMAP_KEY_RANGE(HUP_BUTTON, number_from, number_to, code) }
   53 #define HGAME_MAP_ABS(usage, code)      \
   54         { HIDMAP_ABS(HUP_GENERIC_DESKTOP, HUG_##usage, code) }
   55 #define HGAME_MAP_GCB(usage, callback)  \
   56         { HIDMAP_ANY_CB(HUP_GENERIC_DESKTOP, HUG_##usage, callback) }
   57 #define HGAME_MAP_CRG(usage_from, usage_to, callback)   \
   58         { HIDMAP_ANY_CB_RANGE(HUP_GENERIC_DESKTOP,      \
   59             HUG_##usage_from, HUG_##usage_to, callback) }
   60 #define HGAME_FINALCB(cb)       \
   61         { HIDMAP_FINAL_CB(&cb) }
   62 
   63 static const struct hidmap_item hgame_map[] = {
   64         HGAME_MAP_BRG(1, 16,            BTN_TRIGGER),
   65         HGAME_MAP_ABS(X,                ABS_X),
   66         HGAME_MAP_ABS(Y,                ABS_Y),
   67         HGAME_MAP_ABS(Z,                ABS_Z),
   68         HGAME_MAP_ABS(RX,               ABS_RX),
   69         HGAME_MAP_ABS(RY,               ABS_RY),
   70         HGAME_MAP_ABS(RZ,               ABS_RZ),
   71         HGAME_MAP_GCB(HAT_SWITCH,       hgame_hat_switch_cb),
   72         HGAME_MAP_CRG(D_PAD_UP, D_PAD_LEFT, hgame_dpad_cb),
   73         HGAME_MAP_BRG(17, 57,           BTN_TRIGGER_HAPPY),
   74         HGAME_FINALCB(                  hgame_final_cb),
   75 };
   76 
   77 static const struct hid_device_id hgame_devs[] = {
   78         { HID_TLC(HUP_GENERIC_DESKTOP, HUG_JOYSTICK),
   79           HID_DRIVER_INFO(HUG_JOYSTICK) },
   80         { HID_TLC(HUP_GENERIC_DESKTOP, HUG_GAME_PAD),
   81           HID_DRIVER_INFO(HUG_GAME_PAD) },
   82 };
   83 
   84 int
   85 hgame_hat_switch_cb(HIDMAP_CB_ARGS)
   86 {
   87         static const struct { int32_t x; int32_t y; } hat_switch_map[] = {
   88             {0, -1}, {1, -1}, {1, 0}, {1, 1}, {0, 1}, {-1, 1}, {-1, 0},
   89             {-1, -1},{0, 0}
   90         };
   91         struct evdev_dev *evdev = HIDMAP_CB_GET_EVDEV();
   92         u_int idx;
   93 
   94         switch (HIDMAP_CB_GET_STATE()) {
   95         case HIDMAP_CB_IS_ATTACHING:
   96                 evdev_support_event(evdev, EV_ABS);
   97                 evdev_support_abs(evdev, ABS_HAT0X, -1, 1, 0, 0, 0);
   98                 evdev_support_abs(evdev, ABS_HAT0Y, -1, 1, 0, 0, 0);
   99                 break;
  100 
  101         case HIDMAP_CB_IS_RUNNING:
  102                 idx = MIN(nitems(hat_switch_map) - 1, (u_int)ctx.data);
  103                 evdev_push_abs(evdev, ABS_HAT0X, hat_switch_map[idx].x);
  104                 evdev_push_abs(evdev, ABS_HAT0Y, hat_switch_map[idx].y);
  105                 break;
  106 
  107         default:
  108                 break;
  109         }
  110 
  111         return (0);
  112 }
  113 
  114 /*
  115  * Emulate the hat switch report via the D-pad usages
  116  * found on XInput/XBox style devices
  117  */
  118 int
  119 hgame_dpad_cb(HIDMAP_CB_ARGS)
  120 {
  121         struct hgame_softc *sc = HIDMAP_CB_GET_SOFTC();
  122         struct evdev_dev *evdev = HIDMAP_CB_GET_EVDEV();
  123         int32_t data;
  124 
  125         switch (HIDMAP_CB_GET_STATE()) {
  126         case HIDMAP_CB_IS_ATTACHING:
  127                 HIDMAP_CB_UDATA64 = HID_GET_USAGE(ctx.hi->usage);
  128                 evdev_support_event(evdev, EV_ABS);
  129                 evdev_support_abs(evdev, ABS_HAT0X, -1, 1, 0, 0, 0);
  130                 evdev_support_abs(evdev, ABS_HAT0Y, -1, 1, 0, 0, 0);
  131                 break;
  132 
  133         case HIDMAP_CB_IS_RUNNING:
  134                 data = ctx.data;
  135                 switch (HIDMAP_CB_UDATA64) {
  136                 case HUG_D_PAD_UP:
  137                         if (sc->dpad_down)
  138                                 return (ENOMSG);
  139                         evdev_push_abs(evdev, ABS_HAT0Y, (data == 0) ? 0 : -1);
  140                         sc->dpad_up = (data != 0);
  141                         break;
  142                 case HUG_D_PAD_DOWN:
  143                         if (sc->dpad_up)
  144                                 return (ENOMSG);
  145                         evdev_push_abs(evdev, ABS_HAT0Y, (data == 0) ? 0 : 1);
  146                         sc->dpad_down = (data != 0);
  147                         break;
  148                 case HUG_D_PAD_RIGHT:
  149                         if (sc->dpad_left)
  150                                 return (ENOMSG);
  151                         evdev_push_abs(evdev, ABS_HAT0X, (data == 0) ? 0 : 1);
  152                         sc->dpad_right = (data != 0);
  153                         break;
  154                 case HUG_D_PAD_LEFT:
  155                         if (sc->dpad_right)
  156                                 return (ENOMSG);
  157                         evdev_push_abs(evdev, ABS_HAT0X, (data == 0) ? 0 : -1);
  158                         sc->dpad_left = (data != 0);
  159                         break;
  160                 }
  161                 break;
  162 
  163         default:
  164                 break;
  165         }
  166 
  167         return (0);
  168 }
  169 
  170 int
  171 hgame_final_cb(HIDMAP_CB_ARGS)
  172 {
  173         struct evdev_dev *evdev = HIDMAP_CB_GET_EVDEV();
  174 
  175         if (HIDMAP_CB_GET_STATE() == HIDMAP_CB_IS_ATTACHING)
  176                 evdev_support_prop(evdev, INPUT_PROP_DIRECT);
  177 
  178         /* Do not execute callback at interrupt handler and detach */
  179         return (ENOSYS);
  180 }
  181 
  182 static int
  183 hgame_probe(device_t dev)
  184 {
  185         const struct hid_device_info *hw = hid_get_device_info(dev);
  186         struct hgame_softc *sc = device_get_softc(dev);
  187         int error;
  188 
  189         if (hid_test_quirk(hw, HQ_IS_XBOX360GP))
  190                 return(ENXIO);
  191 
  192         error = HIDMAP_PROBE(&sc->hm, dev, hgame_devs, hgame_map, NULL);
  193         if (error > 0)
  194                 return (error);
  195 
  196         hidbus_set_desc(dev, hidbus_get_driver_info(dev) == HUG_GAME_PAD ?
  197             "Gamepad" : "Joystick");
  198 
  199         return (BUS_PROBE_GENERIC);
  200 }
  201 
  202 
  203 
  204 static int
  205 hgame_attach(device_t dev)
  206 {
  207         struct hgame_softc *sc = device_get_softc(dev);
  208 
  209         return (hidmap_attach(&sc->hm));
  210 }
  211 
  212 static int
  213 hgame_detach(device_t dev)
  214 {
  215         struct hgame_softc *sc = device_get_softc(dev);
  216 
  217         return (hidmap_detach(&sc->hm));
  218 }
  219 
  220 static device_method_t hgame_methods[] = {
  221         DEVMETHOD(device_probe,         hgame_probe),
  222         DEVMETHOD(device_attach,        hgame_attach),
  223         DEVMETHOD(device_detach,        hgame_detach),
  224 
  225         DEVMETHOD_END
  226 };
  227 
  228 DEFINE_CLASS_0(hgame, hgame_driver, hgame_methods, sizeof(struct hgame_softc));
  229 DRIVER_MODULE(hgame, hidbus, hgame_driver, NULL, NULL);
  230 MODULE_DEPEND(hgame, hid, 1, 1, 1);
  231 MODULE_DEPEND(hgame, hidbus, 1, 1, 1);
  232 MODULE_DEPEND(hgame, hidmap, 1, 1, 1);
  233 MODULE_DEPEND(hgame, evdev, 1, 1, 1);
  234 MODULE_VERSION(hgame, 1);
  235 HID_PNP_INFO(hgame_devs);

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

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