1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * HID driver for some chicony "special" devices |
4 | * |
5 | * Copyright (c) 1999 Andreas Gal |
6 | * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> |
7 | * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc |
8 | * Copyright (c) 2006-2007 Jiri Kosina |
9 | * Copyright (c) 2007 Paul Walmsley |
10 | * Copyright (c) 2008 Jiri Slaby |
11 | */ |
12 | |
13 | /* |
14 | */ |
15 | |
16 | #include <linux/device.h> |
17 | #include <linux/input.h> |
18 | #include <linux/hid.h> |
19 | #include <linux/module.h> |
20 | #include <linux/usb.h> |
21 | |
22 | #include "hid-ids.h" |
23 | |
24 | #define CH_WIRELESS_CTL_REPORT_ID 0x11 |
25 | |
26 | static int ch_report_wireless(struct hid_report *report, u8 *data, int size) |
27 | { |
28 | struct hid_device *hdev = report->device; |
29 | struct input_dev *input; |
30 | |
31 | if (report->id != CH_WIRELESS_CTL_REPORT_ID || report->maxfield != 1) |
32 | return 0; |
33 | |
34 | input = report->field[0]->hidinput->input; |
35 | if (!input) { |
36 | hid_warn(hdev, "can't find wireless radio control's input" ); |
37 | return 0; |
38 | } |
39 | |
40 | input_report_key(dev: input, KEY_RFKILL, value: 1); |
41 | input_sync(dev: input); |
42 | input_report_key(dev: input, KEY_RFKILL, value: 0); |
43 | input_sync(dev: input); |
44 | |
45 | return 1; |
46 | } |
47 | |
48 | static int ch_raw_event(struct hid_device *hdev, |
49 | struct hid_report *report, u8 *data, int size) |
50 | { |
51 | if (report->application == HID_GD_WIRELESS_RADIO_CTLS) |
52 | return ch_report_wireless(report, data, size); |
53 | |
54 | return 0; |
55 | } |
56 | |
57 | #define ch_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \ |
58 | EV_KEY, (c)) |
59 | static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi, |
60 | struct hid_field *field, struct hid_usage *usage, |
61 | unsigned long **bit, int *max) |
62 | { |
63 | if ((usage->hid & HID_USAGE_PAGE) != HID_UP_MSVENDOR) |
64 | return 0; |
65 | |
66 | set_bit(EV_REP, addr: hi->input->evbit); |
67 | switch (usage->hid & HID_USAGE) { |
68 | case 0xff01: ch_map_key_clear(BTN_1); break; |
69 | case 0xff02: ch_map_key_clear(BTN_2); break; |
70 | case 0xff03: ch_map_key_clear(BTN_3); break; |
71 | case 0xff04: ch_map_key_clear(BTN_4); break; |
72 | case 0xff05: ch_map_key_clear(BTN_5); break; |
73 | case 0xff06: ch_map_key_clear(BTN_6); break; |
74 | case 0xff07: ch_map_key_clear(BTN_7); break; |
75 | case 0xff08: ch_map_key_clear(BTN_8); break; |
76 | case 0xff09: ch_map_key_clear(BTN_9); break; |
77 | case 0xff0a: ch_map_key_clear(BTN_A); break; |
78 | case 0xff0b: ch_map_key_clear(BTN_B); break; |
79 | case 0x00f1: ch_map_key_clear(KEY_WLAN); break; |
80 | case 0x00f2: ch_map_key_clear(KEY_BRIGHTNESSDOWN); break; |
81 | case 0x00f3: ch_map_key_clear(KEY_BRIGHTNESSUP); break; |
82 | case 0x00f4: ch_map_key_clear(KEY_DISPLAY_OFF); break; |
83 | case 0x00f7: ch_map_key_clear(KEY_CAMERA); break; |
84 | case 0x00f8: ch_map_key_clear(KEY_PROG1); break; |
85 | default: |
86 | return 0; |
87 | } |
88 | return 1; |
89 | } |
90 | |
91 | static __u8 *ch_switch12_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
92 | unsigned int *rsize) |
93 | { |
94 | struct usb_interface *intf = to_usb_interface(hdev->dev.parent); |
95 | |
96 | if (intf->cur_altsetting->desc.bInterfaceNumber == 1) { |
97 | /* Change usage maximum and logical maximum from 0x7fff to |
98 | * 0x2fff, so they don't exceed HID_MAX_USAGES */ |
99 | switch (hdev->product) { |
100 | case USB_DEVICE_ID_CHICONY_ACER_SWITCH12: |
101 | if (*rsize >= 128 && rdesc[64] == 0xff && rdesc[65] == 0x7f |
102 | && rdesc[69] == 0xff && rdesc[70] == 0x7f) { |
103 | hid_info(hdev, "Fixing up report descriptor\n" ); |
104 | rdesc[65] = rdesc[70] = 0x2f; |
105 | } |
106 | break; |
107 | } |
108 | |
109 | } |
110 | return rdesc; |
111 | } |
112 | |
113 | static int ch_probe(struct hid_device *hdev, const struct hid_device_id *id) |
114 | { |
115 | int ret; |
116 | |
117 | if (!hid_is_usb(hdev)) |
118 | return -EINVAL; |
119 | |
120 | hdev->quirks |= HID_QUIRK_INPUT_PER_APP; |
121 | ret = hid_parse(hdev); |
122 | if (ret) { |
123 | hid_err(hdev, "Chicony hid parse failed: %d\n" , ret); |
124 | return ret; |
125 | } |
126 | |
127 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); |
128 | if (ret) { |
129 | hid_err(hdev, "Chicony hw start failed: %d\n" , ret); |
130 | return ret; |
131 | } |
132 | |
133 | return 0; |
134 | } |
135 | |
136 | static const struct hid_device_id ch_devices[] = { |
137 | { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) }, |
138 | { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) }, |
139 | { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS3) }, |
140 | { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_ACER_SWITCH12) }, |
141 | { } |
142 | }; |
143 | MODULE_DEVICE_TABLE(hid, ch_devices); |
144 | |
145 | static struct hid_driver ch_driver = { |
146 | .name = "chicony" , |
147 | .id_table = ch_devices, |
148 | .report_fixup = ch_switch12_report_fixup, |
149 | .input_mapping = ch_input_mapping, |
150 | .probe = ch_probe, |
151 | .raw_event = ch_raw_event, |
152 | }; |
153 | module_hid_driver(ch_driver); |
154 | |
155 | MODULE_LICENSE("GPL" ); |
156 | |