Commit | Line | Data |
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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
f1918be1 HG |
2 | /* |
3 | * HID driver for some ITE "special" devices | |
4 | * Copyright (c) 2017 Hans de Goede <hdegoede@redhat.com> | |
f1918be1 HG |
5 | */ |
6 | ||
7 | #include <linux/device.h> | |
8 | #include <linux/input.h> | |
9 | #include <linux/hid.h> | |
10 | #include <linux/module.h> | |
11 | ||
12 | #include "hid-ids.h" | |
13 | ||
3c785a06 HG |
14 | #define QUIRK_TOUCHPAD_ON_OFF_REPORT BIT(0) |
15 | ||
16 | static __u8 *ite_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize) | |
17 | { | |
18 | unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); | |
19 | ||
20 | if (quirks & QUIRK_TOUCHPAD_ON_OFF_REPORT) { | |
c961facb | 21 | /* For Acer Aspire Switch 10 SW5-012 keyboard-dock */ |
3c785a06 | 22 | if (*rsize == 188 && rdesc[162] == 0x81 && rdesc[163] == 0x02) { |
c961facb | 23 | hid_info(hdev, "Fixing up Acer Sw5-012 ITE keyboard report descriptor\n"); |
3c785a06 HG |
24 | rdesc[163] = HID_MAIN_ITEM_RELATIVE; |
25 | } | |
b7c20f38 | 26 | /* For Acer One S1002/S1003 keyboard-dock */ |
c961facb | 27 | if (*rsize == 188 && rdesc[185] == 0x81 && rdesc[186] == 0x02) { |
b7c20f38 | 28 | hid_info(hdev, "Fixing up Acer S1002/S1003 ITE keyboard report descriptor\n"); |
c961facb HG |
29 | rdesc[186] = HID_MAIN_ITEM_RELATIVE; |
30 | } | |
b7c20f38 HG |
31 | /* For Acer Aspire Switch 10E (SW3-016) keyboard-dock */ |
32 | if (*rsize == 210 && rdesc[184] == 0x81 && rdesc[185] == 0x02) { | |
33 | hid_info(hdev, "Fixing up Acer Aspire Switch 10E (SW3-016) ITE keyboard report descriptor\n"); | |
34 | rdesc[185] = HID_MAIN_ITEM_RELATIVE; | |
35 | } | |
3c785a06 HG |
36 | } |
37 | ||
38 | return rdesc; | |
39 | } | |
40 | ||
41 | static int ite_input_mapping(struct hid_device *hdev, | |
42 | struct hid_input *hi, struct hid_field *field, | |
43 | struct hid_usage *usage, unsigned long **bit, | |
44 | int *max) | |
45 | { | |
46 | ||
47 | unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); | |
48 | ||
49 | if ((quirks & QUIRK_TOUCHPAD_ON_OFF_REPORT) && | |
50 | (usage->hid & HID_USAGE_PAGE) == 0x00880000) { | |
51 | if (usage->hid == 0x00880078) { | |
52 | /* Touchpad on, userspace expects F22 for this */ | |
53 | hid_map_usage_clear(hi, usage, bit, max, EV_KEY, KEY_F22); | |
54 | return 1; | |
55 | } | |
56 | if (usage->hid == 0x00880079) { | |
57 | /* Touchpad off, userspace expects F23 for this */ | |
58 | hid_map_usage_clear(hi, usage, bit, max, EV_KEY, KEY_F23); | |
59 | return 1; | |
60 | } | |
61 | return -1; | |
62 | } | |
63 | ||
64 | return 0; | |
65 | } | |
66 | ||
f1918be1 HG |
67 | static int ite_event(struct hid_device *hdev, struct hid_field *field, |
68 | struct hid_usage *usage, __s32 value) | |
69 | { | |
70 | struct input_dev *input; | |
71 | ||
72 | if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput) | |
73 | return 0; | |
74 | ||
75 | input = field->hidinput->input; | |
76 | ||
77 | /* | |
78 | * The ITE8595 always reports 0 as value for the rfkill button. Luckily | |
79 | * it is the only button in its report, and it sends a report on | |
80 | * release only, so receiving a report means the button was pressed. | |
81 | */ | |
82 | if (usage->hid == HID_GD_RFKILL_BTN) { | |
83 | input_event(input, EV_KEY, KEY_RFKILL, 1); | |
84 | input_sync(input); | |
85 | input_event(input, EV_KEY, KEY_RFKILL, 0); | |
86 | input_sync(input); | |
87 | return 1; | |
88 | } | |
89 | ||
90 | return 0; | |
91 | } | |
92 | ||
3c785a06 HG |
93 | static int ite_probe(struct hid_device *hdev, const struct hid_device_id *id) |
94 | { | |
95 | int ret; | |
96 | ||
97 | hid_set_drvdata(hdev, (void *)id->driver_data); | |
98 | ||
99 | ret = hid_open_report(hdev); | |
100 | if (ret) | |
101 | return ret; | |
102 | ||
103 | return hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
104 | } | |
105 | ||
f1918be1 HG |
106 | static const struct hid_device_id ite_devices[] = { |
107 | { HID_USB_DEVICE(USB_VENDOR_ID_ITE, USB_DEVICE_ID_ITE8595) }, | |
40502074 | 108 | { HID_USB_DEVICE(USB_VENDOR_ID_258A, USB_DEVICE_ID_258A_6A88) }, |
8f18eca9 | 109 | /* ITE8595 USB kbd ctlr, with Synaptics touchpad connected to it. */ |
beae5619 HG |
110 | { HID_DEVICE(BUS_USB, HID_GROUP_GENERIC, |
111 | USB_VENDOR_ID_SYNAPTICS, | |
3c785a06 HG |
112 | USB_DEVICE_ID_SYNAPTICS_ACER_SWITCH5_012), |
113 | .driver_data = QUIRK_TOUCHPAD_ON_OFF_REPORT }, | |
5bf2f2f3 | 114 | /* ITE8910 USB kbd ctlr, with Synaptics touchpad connected to it. */ |
c961facb HG |
115 | { HID_DEVICE(BUS_USB, HID_GROUP_GENERIC, |
116 | USB_VENDOR_ID_SYNAPTICS, | |
117 | USB_DEVICE_ID_SYNAPTICS_ACER_ONE_S1002), | |
118 | .driver_data = QUIRK_TOUCHPAD_ON_OFF_REPORT }, | |
119 | /* ITE8910 USB kbd ctlr, with Synaptics touchpad connected to it. */ | |
5bf2f2f3 HG |
120 | { HID_DEVICE(BUS_USB, HID_GROUP_GENERIC, |
121 | USB_VENDOR_ID_SYNAPTICS, | |
b7c20f38 HG |
122 | USB_DEVICE_ID_SYNAPTICS_ACER_ONE_S1003), |
123 | .driver_data = QUIRK_TOUCHPAD_ON_OFF_REPORT }, | |
9ad6645a HG |
124 | /* ITE8910 USB kbd ctlr, with Synaptics touchpad connected to it. */ |
125 | { HID_DEVICE(BUS_USB, HID_GROUP_GENERIC, | |
126 | USB_VENDOR_ID_SYNAPTICS, | |
127 | USB_DEVICE_ID_SYNAPTICS_ACER_SWITCH5_017), | |
128 | .driver_data = QUIRK_TOUCHPAD_ON_OFF_REPORT }, | |
f1918be1 HG |
129 | { } |
130 | }; | |
131 | MODULE_DEVICE_TABLE(hid, ite_devices); | |
132 | ||
133 | static struct hid_driver ite_driver = { | |
134 | .name = "itetech", | |
135 | .id_table = ite_devices, | |
3c785a06 HG |
136 | .probe = ite_probe, |
137 | .report_fixup = ite_report_fixup, | |
138 | .input_mapping = ite_input_mapping, | |
f1918be1 HG |
139 | .event = ite_event, |
140 | }; | |
141 | module_hid_driver(ite_driver); | |
142 | ||
b413c59e | 143 | MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); |
f1918be1 | 144 | MODULE_LICENSE("GPL"); |