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Added automatic mapping support for Xbox controllers on the 6.x Linux…
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… kernels

This automatically adds support for the share button and paddles when present.
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@slouken
slouken committed Jun 13, 2023
1 parent 0f24956 commit db1d4d3
Showing 1 changed file with 72 additions and 69 deletions.
141 changes: 72 additions & 69 deletions src/joystick/linux/SDL_sysjoystick.c
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Original file line number Diff line number Diff line change
Expand Up @@ -73,47 +73,47 @@
#endif

#ifndef BTN_TRIGGER_HAPPY
#define BTN_TRIGGER_HAPPY 0x2c0
#define BTN_TRIGGER_HAPPY1 0x2c0
#define BTN_TRIGGER_HAPPY2 0x2c1
#define BTN_TRIGGER_HAPPY3 0x2c2
#define BTN_TRIGGER_HAPPY4 0x2c3
#define BTN_TRIGGER_HAPPY5 0x2c4
#define BTN_TRIGGER_HAPPY6 0x2c5
#define BTN_TRIGGER_HAPPY7 0x2c6
#define BTN_TRIGGER_HAPPY8 0x2c7
#define BTN_TRIGGER_HAPPY9 0x2c8
#define BTN_TRIGGER_HAPPY10 0x2c9
#define BTN_TRIGGER_HAPPY11 0x2ca
#define BTN_TRIGGER_HAPPY12 0x2cb
#define BTN_TRIGGER_HAPPY13 0x2cc
#define BTN_TRIGGER_HAPPY14 0x2cd
#define BTN_TRIGGER_HAPPY15 0x2ce
#define BTN_TRIGGER_HAPPY16 0x2cf
#define BTN_TRIGGER_HAPPY17 0x2d0
#define BTN_TRIGGER_HAPPY18 0x2d1
#define BTN_TRIGGER_HAPPY19 0x2d2
#define BTN_TRIGGER_HAPPY20 0x2d3
#define BTN_TRIGGER_HAPPY21 0x2d4
#define BTN_TRIGGER_HAPPY22 0x2d5
#define BTN_TRIGGER_HAPPY23 0x2d6
#define BTN_TRIGGER_HAPPY24 0x2d7
#define BTN_TRIGGER_HAPPY25 0x2d8
#define BTN_TRIGGER_HAPPY26 0x2d9
#define BTN_TRIGGER_HAPPY27 0x2da
#define BTN_TRIGGER_HAPPY28 0x2db
#define BTN_TRIGGER_HAPPY29 0x2dc
#define BTN_TRIGGER_HAPPY30 0x2dd
#define BTN_TRIGGER_HAPPY31 0x2de
#define BTN_TRIGGER_HAPPY32 0x2df
#define BTN_TRIGGER_HAPPY33 0x2e0
#define BTN_TRIGGER_HAPPY34 0x2e1
#define BTN_TRIGGER_HAPPY35 0x2e2
#define BTN_TRIGGER_HAPPY36 0x2e3
#define BTN_TRIGGER_HAPPY37 0x2e4
#define BTN_TRIGGER_HAPPY38 0x2e5
#define BTN_TRIGGER_HAPPY39 0x2e6
#define BTN_TRIGGER_HAPPY40 0x2e7
#define BTN_TRIGGER_HAPPY 0x2c0
#define BTN_TRIGGER_HAPPY1 0x2c0
#define BTN_TRIGGER_HAPPY2 0x2c1
#define BTN_TRIGGER_HAPPY3 0x2c2
#define BTN_TRIGGER_HAPPY4 0x2c3
#define BTN_TRIGGER_HAPPY5 0x2c4
#define BTN_TRIGGER_HAPPY6 0x2c5
#define BTN_TRIGGER_HAPPY7 0x2c6
#define BTN_TRIGGER_HAPPY8 0x2c7
#define BTN_TRIGGER_HAPPY9 0x2c8
#define BTN_TRIGGER_HAPPY10 0x2c9
#define BTN_TRIGGER_HAPPY11 0x2ca
#define BTN_TRIGGER_HAPPY12 0x2cb
#define BTN_TRIGGER_HAPPY13 0x2cc
#define BTN_TRIGGER_HAPPY14 0x2cd
#define BTN_TRIGGER_HAPPY15 0x2ce
#define BTN_TRIGGER_HAPPY16 0x2cf
#define BTN_TRIGGER_HAPPY17 0x2d0
#define BTN_TRIGGER_HAPPY18 0x2d1
#define BTN_TRIGGER_HAPPY19 0x2d2
#define BTN_TRIGGER_HAPPY20 0x2d3
#define BTN_TRIGGER_HAPPY21 0x2d4
#define BTN_TRIGGER_HAPPY22 0x2d5
#define BTN_TRIGGER_HAPPY23 0x2d6
#define BTN_TRIGGER_HAPPY24 0x2d7
#define BTN_TRIGGER_HAPPY25 0x2d8
#define BTN_TRIGGER_HAPPY26 0x2d9
#define BTN_TRIGGER_HAPPY27 0x2da
#define BTN_TRIGGER_HAPPY28 0x2db
#define BTN_TRIGGER_HAPPY29 0x2dc
#define BTN_TRIGGER_HAPPY30 0x2dd
#define BTN_TRIGGER_HAPPY31 0x2de
#define BTN_TRIGGER_HAPPY32 0x2df
#define BTN_TRIGGER_HAPPY33 0x2e0
#define BTN_TRIGGER_HAPPY34 0x2e1
#define BTN_TRIGGER_HAPPY35 0x2e2
#define BTN_TRIGGER_HAPPY36 0x2e3
#define BTN_TRIGGER_HAPPY37 0x2e4
#define BTN_TRIGGER_HAPPY38 0x2e5
#define BTN_TRIGGER_HAPPY39 0x2e6
#define BTN_TRIGGER_HAPPY40 0x2e7
#endif

#include "../../core/linux/SDL_evdev_capabilities.h"
Expand Down Expand Up @@ -1725,6 +1725,10 @@ static SDL_bool LINUX_JoystickGetGamepadMapping(int device_index, SDL_GamepadMap

/* We have a gamepad, start filling out the mappings */

#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapping %s (VID/PID 0x%.4x/0x%.4x)", item->name, SDL_GetJoystickVendor(joystick), SDL_GetJoystickProduct(joystick));
#endif

if (joystick->hwdata->has_key[BTN_A]) {
out->a.kind = EMappingKind_Button;
out->a.target = joystick->hwdata->key_map[BTN_A];
Expand Down Expand Up @@ -2080,37 +2084,36 @@ static SDL_bool LINUX_JoystickGetGamepadMapping(int device_index, SDL_GamepadMap
#endif
}

/* The xpadneo driver uses the happy buttons for triggers.
Unfortunately it also reports them as available for all controllers,
and exposes the Xbox Elite with the VID/PID of an Xbox 360 controller,
so we can't really tell whether this is an Xbox Elite or Xbox One S
controller.
if (SDL_GetJoystickVendor(joystick) == USB_VENDOR_MICROSOFT) {
/* The Xbox Elite controllers have the paddles as BTN_TRIGGER_HAPPY4 - BTN_TRIGGER_HAPPY7 */
if (joystick->hwdata->has_key[BTN_TRIGGER_HAPPY5] &&
joystick->hwdata->has_key[BTN_TRIGGER_HAPPY6] &&
joystick->hwdata->has_key[BTN_TRIGGER_HAPPY7] &&
joystick->hwdata->has_key[BTN_TRIGGER_HAPPY8]) {
out->paddle1.kind = EMappingKind_Button;
out->paddle1.target = joystick->hwdata->key_map[BTN_TRIGGER_HAPPY5];
out->paddle2.kind = EMappingKind_Button;
out->paddle2.target = joystick->hwdata->key_map[BTN_TRIGGER_HAPPY7];
out->paddle3.kind = EMappingKind_Button;
out->paddle3.target = joystick->hwdata->key_map[BTN_TRIGGER_HAPPY6];
out->paddle4.kind = EMappingKind_Button;
out->paddle4.target = joystick->hwdata->key_map[BTN_TRIGGER_HAPPY8];
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped PADDLE1 to button %d (BTN_TRIGGER_HAPPY4)", out->paddle1.target);
SDL_Log("Mapped PADDLE2 to button %d (BTN_TRIGGER_HAPPY6)", out->paddle2.target);
SDL_Log("Mapped PADDLE3 to button %d (BTN_TRIGGER_HAPPY5)", out->paddle3.target);
SDL_Log("Mapped PADDLE4 to button %d (BTN_TRIGGER_HAPPY7)", out->paddle4.target);
#endif
}

xpadneo has a note about this in the driver code:
https://github.com/atar-axis/xpadneo/blob/master/hid-xpadneo/src/hid-xpadneo.c#L1137
*/
if (SDL_IsJoystickXboxOneElite(SDL_GetJoystickVendor(joystick), SDL_GetJoystickProduct(joystick))) {
int i;
unsigned int paddle_index = 0;
SDL_InputMapping *paddles[4] = {
&out->paddle1,
&out->paddle3,
&out->paddle2,
&out->paddle4
};

for (i = BTN_TRIGGER_HAPPY; i <= BTN_TRIGGER_HAPPY40; ++i) {
if (joystick->hwdata->has_key[i]) {
paddles[paddle_index]->kind = EMappingKind_Button;
paddles[paddle_index]->target = joystick->hwdata->key_map[i];
/* The Xbox Series X controllers have the Share button as KEY_RECORD */
if (joystick->hwdata->has_key[KEY_RECORD]) {
out->misc1.kind = EMappingKind_Button;
out->misc1.target = joystick->hwdata->key_map[KEY_RECORD];
mapped |= MAPPED_DPAD_RIGHT;
#ifdef DEBUG_GAMEPAD_MAPPING
SDL_Log("Mapped PADDLE%u to button %d (BTN_TRIGGER_HAPPY%d)", 1 + paddle_index, paddles[paddle_index]->target, i - BTN_TRIGGER_HAPPY);
SDL_Log("Mapped MISC1 to button %d (KEY_RECORD)", out->misc1.target);
#endif
++paddle_index;
if (paddle_index == SDL_arraysize(paddles)) {
break;
}
}
}
}

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