1 // SPDX-License-Identifier: GPL-2.0-only
3 * HID driver for some ITE "special" devices
4 * Copyright (c) 2017 Hans de Goede <hdegoede@redhat.com>
7 #include <linux/device.h>
8 #include <linux/input.h>
10 #include <linux/module.h>
14 #define QUIRK_TOUCHPAD_ON_OFF_REPORT BIT(0)
16 static __u8
*ite_report_fixup(struct hid_device
*hdev
, __u8
*rdesc
, unsigned int *rsize
)
18 unsigned long quirks
= (unsigned long)hid_get_drvdata(hdev
);
20 if (quirks
& QUIRK_TOUCHPAD_ON_OFF_REPORT
) {
21 /* For Acer Aspire Switch 10 SW5-012 keyboard-dock */
22 if (*rsize
== 188 && rdesc
[162] == 0x81 && rdesc
[163] == 0x02) {
23 hid_info(hdev
, "Fixing up Acer Sw5-012 ITE keyboard report descriptor\n");
24 rdesc
[163] = HID_MAIN_ITEM_RELATIVE
;
26 /* For Acer One S1002/S1003 keyboard-dock */
27 if (*rsize
== 188 && rdesc
[185] == 0x81 && rdesc
[186] == 0x02) {
28 hid_info(hdev
, "Fixing up Acer S1002/S1003 ITE keyboard report descriptor\n");
29 rdesc
[186] = HID_MAIN_ITEM_RELATIVE
;
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
;
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
,
47 unsigned long quirks
= (unsigned long)hid_get_drvdata(hdev
);
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
);
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
);
67 static int ite_event(struct hid_device
*hdev
, struct hid_field
*field
,
68 struct hid_usage
*usage
, __s32 value
)
70 struct input_dev
*input
;
72 if (!(hdev
->claimed
& HID_CLAIMED_INPUT
) || !field
->hidinput
)
75 input
= field
->hidinput
->input
;
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.
82 if (usage
->hid
== HID_GD_RFKILL_BTN
) {
83 input_event(input
, EV_KEY
, KEY_RFKILL
, 1);
85 input_event(input
, EV_KEY
, KEY_RFKILL
, 0);
93 static int ite_probe(struct hid_device
*hdev
, const struct hid_device_id
*id
)
97 hid_set_drvdata(hdev
, (void *)id
->driver_data
);
99 ret
= hid_open_report(hdev
);
103 return hid_hw_start(hdev
, HID_CONNECT_DEFAULT
);
106 static const struct hid_device_id ite_devices
[] = {
107 { HID_USB_DEVICE(USB_VENDOR_ID_ITE
, USB_DEVICE_ID_ITE8595
) },
108 { HID_USB_DEVICE(USB_VENDOR_ID_258A
, USB_DEVICE_ID_258A_6A88
) },
109 /* ITE8595 USB kbd ctlr, with Synaptics touchpad connected to it. */
110 { HID_DEVICE(BUS_USB
, HID_GROUP_GENERIC
,
111 USB_VENDOR_ID_SYNAPTICS
,
112 USB_DEVICE_ID_SYNAPTICS_ACER_SWITCH5_012
),
113 .driver_data
= QUIRK_TOUCHPAD_ON_OFF_REPORT
},
114 /* ITE8910 USB kbd ctlr, with Synaptics touchpad connected to it. */
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. */
120 { HID_DEVICE(BUS_USB
, HID_GROUP_GENERIC
,
121 USB_VENDOR_ID_SYNAPTICS
,
122 USB_DEVICE_ID_SYNAPTICS_ACER_ONE_S1003
),
123 .driver_data
= QUIRK_TOUCHPAD_ON_OFF_REPORT
},
126 MODULE_DEVICE_TABLE(hid
, ite_devices
);
128 static struct hid_driver ite_driver
= {
130 .id_table
= ite_devices
,
132 .report_fixup
= ite_report_fixup
,
133 .input_mapping
= ite_input_mapping
,
136 module_hid_driver(ite_driver
);
138 MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
139 MODULE_LICENSE("GPL");