// SPDX-License-Identifier: GPL-2.0-or-later /* * HID driver for Retrode 2 controller adapter and plug-in extensions * * Copyright (c) 2017 Bastien Nocera <hadess@hadess.net> */ /* */ #include <linux/input.h> #include <linux/slab.h> #include <linux/hid.h> #include <linux/module.h> #include "hid-ids.h" #define CONTROLLER_NAME_BASE "Retrode" static int retrode_input_configured(struct hid_device *hdev, struct hid_input *hi) { struct hid_field *field = hi->report->field[0]; const char *suffix; int number = 0; char *name; switch (field->report->id) { case 0: suffix = "SNES Mouse"; break; case 1: case 2: suffix = "SNES / N64"; number = field->report->id; break; case 3: case 4: suffix = "Mega Drive"; number = field->report->id - 2; break; default: hid_err(hdev, "Got unhandled report id %d\n", field->report->id); suffix = "Unknown"; } if (number) name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "%s %s #%d", CONTROLLER_NAME_BASE, suffix, number); else name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "%s %s", CONTROLLER_NAME_BASE, suffix); if (!name) return -ENOMEM; hi->input->name = name; return 0; } static int retrode_probe(struct hid_device *hdev, const struct hid_device_id *id) { int ret; /* Has no effect on the mouse device */ hdev->quirks |= HID_QUIRK_MULTI_INPUT; ret = hid_parse(hdev); if (ret) return ret; ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); if (ret) return ret; return 0; } static const struct hid_device_id retrode_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_FUTURE_TECHNOLOGY, USB_DEVICE_ID_RETRODE2) }, { } }; MODULE_DEVICE_TABLE(hid, retrode_devices); static struct hid_driver retrode_driver = { .name = "hid-retrode", .id_table = retrode_devices, .input_configured = retrode_input_configured, .probe = retrode_probe, }; module_hid_driver(retrode_driver); MODULE_LICENSE("GPL");