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Fixed initializing the Nyko and EVORETRO GameCube adaptors

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This requires root on most Linux distributions, as we have to directly send USB messages to the devices to enable input reports.
This commit is contained in:
Sam Lantinga
2021-01-21 22:30:34 -08:00
parent b6ae9a7cba
commit 3527b49459
3 changed files with 82 additions and 0 deletions
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51
src/hidapi/SDL_hidapi.c
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@@ -955,6 +955,57 @@ HID_API_EXPORT const wchar_t* HID_API_CALL hid_error(hid_device *device)
return wrapper->backend->hid_error(wrapper->device);
}
/* This is needed to enable input for Nyko and EVORETRO GameCube adaptors */
void SDL_EnableGameCubeAdaptors(void)
{
#ifdef SDL_LIBUSB_DYNAMIC
libusb_context *usb_context = NULL;
libusb_device **devs = NULL;
libusb_device_handle *handle = NULL;
struct libusb_device_descriptor desc;
ssize_t i, num_devs;
int kernel_detached = 0;
if (libusb_init(&usb_context) == 0) {
num_devs = libusb_get_device_list(usb_context, &devs);
for (i = 0; i < num_devs; ++i) {
if (libusb_get_device_descriptor(devs[i], &desc) != 0) {
continue;
}
if (desc.idVendor != 0x057e || desc.idProduct != 0x0337) {
continue;
}
if (libusb_open(devs[i], &handle) != 0) {
continue;
}
if (libusb_kernel_driver_active(handle, 0)) {
if (libusb_detach_kernel_driver(handle, 0) == 0) {
kernel_detached = 1;
}
}
if (libusb_claim_interface(handle, 0) == 0) {
libusb_control_transfer(handle, 0x21, 11, 0x0001, 0, NULL, 0, 1000);
libusb_release_interface(handle, 0);
}
if (kernel_detached) {
libusb_attach_kernel_driver(handle, 0);
}
libusb_close(handle);
}
libusb_free_device_list(devs, 1);
libusb_exit(usb_context);
}
#endif /* SDL_LIBUSB_DYNAMIC */
}
#endif /* SDL_JOYSTICK_HIDAPI */
/* vi: set sts=4 ts=4 sw=4 expandtab: */