1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * HID driver for Retrode 2 controller adapter and plug-in extensions
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (c) 2017 Bastien Nocera <hadess@hadess.net>
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun /*
9*4882a593Smuzhiyun */
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #include <linux/input.h>
12*4882a593Smuzhiyun #include <linux/slab.h>
13*4882a593Smuzhiyun #include <linux/hid.h>
14*4882a593Smuzhiyun #include <linux/module.h>
15*4882a593Smuzhiyun #include "hid-ids.h"
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun #define CONTROLLER_NAME_BASE "Retrode"
18*4882a593Smuzhiyun
retrode_input_configured(struct hid_device * hdev,struct hid_input * hi)19*4882a593Smuzhiyun static int retrode_input_configured(struct hid_device *hdev,
20*4882a593Smuzhiyun struct hid_input *hi)
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun struct hid_field *field = hi->report->field[0];
23*4882a593Smuzhiyun const char *suffix;
24*4882a593Smuzhiyun int number = 0;
25*4882a593Smuzhiyun char *name;
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun switch (field->report->id) {
28*4882a593Smuzhiyun case 0:
29*4882a593Smuzhiyun suffix = "SNES Mouse";
30*4882a593Smuzhiyun break;
31*4882a593Smuzhiyun case 1:
32*4882a593Smuzhiyun case 2:
33*4882a593Smuzhiyun suffix = "SNES / N64";
34*4882a593Smuzhiyun number = field->report->id;
35*4882a593Smuzhiyun break;
36*4882a593Smuzhiyun case 3:
37*4882a593Smuzhiyun case 4:
38*4882a593Smuzhiyun suffix = "Mega Drive";
39*4882a593Smuzhiyun number = field->report->id - 2;
40*4882a593Smuzhiyun break;
41*4882a593Smuzhiyun default:
42*4882a593Smuzhiyun hid_err(hdev, "Got unhandled report id %d\n", field->report->id);
43*4882a593Smuzhiyun suffix = "Unknown";
44*4882a593Smuzhiyun }
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun if (number)
47*4882a593Smuzhiyun name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
48*4882a593Smuzhiyun "%s %s #%d", CONTROLLER_NAME_BASE,
49*4882a593Smuzhiyun suffix, number);
50*4882a593Smuzhiyun else
51*4882a593Smuzhiyun name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
52*4882a593Smuzhiyun "%s %s", CONTROLLER_NAME_BASE, suffix);
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun if (!name)
55*4882a593Smuzhiyun return -ENOMEM;
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun hi->input->name = name;
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun return 0;
60*4882a593Smuzhiyun }
61*4882a593Smuzhiyun
retrode_probe(struct hid_device * hdev,const struct hid_device_id * id)62*4882a593Smuzhiyun static int retrode_probe(struct hid_device *hdev,
63*4882a593Smuzhiyun const struct hid_device_id *id)
64*4882a593Smuzhiyun {
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun int ret;
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun /* Has no effect on the mouse device */
69*4882a593Smuzhiyun hdev->quirks |= HID_QUIRK_MULTI_INPUT;
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun ret = hid_parse(hdev);
72*4882a593Smuzhiyun if (ret)
73*4882a593Smuzhiyun return ret;
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
76*4882a593Smuzhiyun if (ret)
77*4882a593Smuzhiyun return ret;
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun return 0;
80*4882a593Smuzhiyun }
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun static const struct hid_device_id retrode_devices[] = {
83*4882a593Smuzhiyun { HID_USB_DEVICE(USB_VENDOR_ID_FUTURE_TECHNOLOGY, USB_DEVICE_ID_RETRODE2) },
84*4882a593Smuzhiyun { }
85*4882a593Smuzhiyun };
86*4882a593Smuzhiyun MODULE_DEVICE_TABLE(hid, retrode_devices);
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun static struct hid_driver retrode_driver = {
89*4882a593Smuzhiyun .name = "hid-retrode",
90*4882a593Smuzhiyun .id_table = retrode_devices,
91*4882a593Smuzhiyun .input_configured = retrode_input_configured,
92*4882a593Smuzhiyun .probe = retrode_probe,
93*4882a593Smuzhiyun };
94*4882a593Smuzhiyun
95*4882a593Smuzhiyun module_hid_driver(retrode_driver);
96*4882a593Smuzhiyun
97*4882a593Smuzhiyun MODULE_LICENSE("GPL");
98