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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
26static 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(input, KEY_RFKILL, 1);
41 input_sync(input);
42 input_report_key(input, KEY_RFKILL, 0);
43 input_sync(input);
44
45 return 1;
46}
47
48static 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))
59static 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, 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
91static __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
98
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
113static int ch_probe(struct hid_device *hdev, const struct hid_device_id *id)
114{
115 int ret;
116
117 hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
118 ret = hid_parse(hdev);
119 if (ret) {
120 hid_err(hdev, "Chicony hid parse failed: %d\n", ret);
121 return ret;
122 }
123
124 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
125 if (ret) {
126 hid_err(hdev, "Chicony hw start failed: %d\n", ret);
127 return ret;
128 }
129
130 return 0;
131}
132
133static const struct hid_device_id ch_devices[] = {
134 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
135 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
136 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS3) },
137 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_ACER_SWITCH12) },
138 { }
139};
140MODULE_DEVICE_TABLE(hid, ch_devices);
141
142static struct hid_driver ch_driver = {
143 .name = "chicony",
144 .id_table = ch_devices,
145 .report_fixup = ch_switch12_report_fixup,
146 .input_mapping = ch_input_mapping,
147 .probe = ch_probe,
148 .raw_event = ch_raw_event,
149};
150module_hid_driver(ch_driver);
151
152MODULE_LICENSE("GPL");
153
