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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
13b2e1ba BN |
2 | /* |
3 | * HID driver for Retrode 2 controller adapter and plug-in extensions | |
4 | * | |
5 | * Copyright (c) 2017 Bastien Nocera <hadess@hadess.net> | |
6 | */ | |
7 | ||
8 | /* | |
13b2e1ba BN |
9 | */ |
10 | ||
11 | #include <linux/input.h> | |
12 | #include <linux/slab.h> | |
13 | #include <linux/hid.h> | |
14 | #include <linux/module.h> | |
15 | #include "hid-ids.h" | |
16 | ||
17 | #define CONTROLLER_NAME_BASE "Retrode" | |
18 | ||
19 | static int retrode_input_configured(struct hid_device *hdev, | |
20 | struct hid_input *hi) | |
21 | { | |
22 | struct hid_field *field = hi->report->field[0]; | |
23 | const char *suffix; | |
24 | int number = 0; | |
25 | char *name; | |
26 | ||
27 | switch (field->report->id) { | |
28 | case 0: | |
29 | suffix = "SNES Mouse"; | |
30 | break; | |
31 | case 1: | |
32 | case 2: | |
33 | suffix = "SNES / N64"; | |
34 | number = field->report->id; | |
35 | break; | |
36 | case 3: | |
37 | case 4: | |
38 | suffix = "Mega Drive"; | |
39 | number = field->report->id - 2; | |
40 | break; | |
41 | default: | |
42 | hid_err(hdev, "Got unhandled report id %d\n", field->report->id); | |
43 | suffix = "Unknown"; | |
44 | } | |
45 | ||
46 | if (number) | |
47 | name = devm_kasprintf(&hdev->dev, GFP_KERNEL, | |
48 | "%s %s #%d", CONTROLLER_NAME_BASE, | |
49 | suffix, number); | |
50 | else | |
51 | name = devm_kasprintf(&hdev->dev, GFP_KERNEL, | |
52 | "%s %s", CONTROLLER_NAME_BASE, suffix); | |
53 | ||
54 | if (!name) | |
55 | return -ENOMEM; | |
56 | ||
57 | hi->input->name = name; | |
58 | ||
59 | return 0; | |
60 | } | |
61 | ||
62 | static int retrode_probe(struct hid_device *hdev, | |
63 | const struct hid_device_id *id) | |
64 | { | |
65 | ||
66 | int ret; | |
67 | ||
68 | /* Has no effect on the mouse device */ | |
69 | hdev->quirks |= HID_QUIRK_MULTI_INPUT; | |
70 | ||
71 | ret = hid_parse(hdev); | |
72 | if (ret) | |
73 | return ret; | |
74 | ||
75 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
76 | if (ret) | |
77 | return ret; | |
78 | ||
79 | return 0; | |
80 | } | |
81 | ||
82 | static const struct hid_device_id retrode_devices[] = { | |
83 | { HID_USB_DEVICE(USB_VENDOR_ID_FUTURE_TECHNOLOGY, USB_DEVICE_ID_RETRODE2) }, | |
84 | { } | |
85 | }; | |
86 | MODULE_DEVICE_TABLE(hid, retrode_devices); | |
87 | ||
88 | static struct hid_driver retrode_driver = { | |
89 | .name = "hid-retrode", | |
90 | .id_table = retrode_devices, | |
91 | .input_configured = retrode_input_configured, | |
92 | .probe = retrode_probe, | |
93 | }; | |
94 | ||
95 | module_hid_driver(retrode_driver); | |
96 | ||
97 | MODULE_LICENSE("GPL"); |