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HID: multitouch: Keep latency normal on deactivate for reactivation gesture

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Uniwill devices have a built in gesture in the touchpad to de- and
reactivate it by double taping the upper left corner. This gesture stops
working when latency is set to high, so this patch keeps the latency on
normal.

Cc: stable@vger.kernel.org
Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
[jkosina@suse.com: change bit from 24 to 25]
[jkosina@suse.com: update shortlog]
Signed-off-by: Jiri Kosina <jkosina@suse.com>
This commit is contained in:
Werner Sembach 2026-01-08 17:09:54 +01:00 • committed by Jiri Kosina
parent 7c698de0dc
commit ec3070f01f
1 changed files with 29 additions and 3 deletions
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32
drivers/hid/hid-multitouch.c
View file

@ -77,6 +77,7 @@ MODULE_LICENSE("GPL");
#define MT_QUIRK_ORIENTATION_INVERT BIT(22)
#define MT_QUIRK_APPLE_TOUCHBAR BIT(23)
#define MT_QUIRK_YOGABOOK9I BIT(24)
#define MT_QUIRK_KEEP_LATENCY_ON_CLOSE BIT(25)
#define MT_INPUTMODE_TOUCHSCREEN 0x02
#define MT_INPUTMODE_TOUCHPAD 0x03
@ -214,6 +215,7 @@ static void mt_post_parse(struct mt_device *td, struct mt_application *app);
#define MT_CLS_WIN_8_DISABLE_WAKEUP 0x0016
#define MT_CLS_WIN_8_NO_STICKY_FINGERS 0x0017
#define MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU 0x0018
#define MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE 0x0019
/* vendor specific classes */
#define MT_CLS_3M 0x0101
@ -335,6 +337,15 @@ static const struct mt_class mt_classes[] = {
MT_QUIRK_CONTACT_CNT_ACCURATE |
MT_QUIRK_WIN8_PTP_BUTTONS,
.export_all_inputs = true },
{ .name = MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE,
.quirks = MT_QUIRK_ALWAYS_VALID |
MT_QUIRK_IGNORE_DUPLICATES |
MT_QUIRK_HOVERING |
MT_QUIRK_CONTACT_CNT_ACCURATE |
MT_QUIRK_STICKY_FINGERS |
MT_QUIRK_WIN8_PTP_BUTTONS |
MT_QUIRK_KEEP_LATENCY_ON_CLOSE,
.export_all_inputs = true },
/*
* vendor specific classes
@ -855,7 +866,8 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
if ((cls->name == MT_CLS_WIN_8 ||
cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT ||
cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU ||
cls->name == MT_CLS_WIN_8_DISABLE_WAKEUP) &&
cls->name == MT_CLS_WIN_8_DISABLE_WAKEUP ||
cls->name == MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE) &&
(field->application == HID_DG_TOUCHPAD ||
field->application == HID_DG_TOUCHSCREEN))
app->quirks |= MT_QUIRK_CONFIDENCE;
@ -1768,7 +1780,8 @@ static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
int ret;
if (td->is_haptic_touchpad && (td->mtclass.name == MT_CLS_WIN_8 ||
td->mtclass.name == MT_CLS_WIN_8_FORCE_MULTI_INPUT)) {
td->mtclass.name == MT_CLS_WIN_8_FORCE_MULTI_INPUT ||
td->mtclass.name == MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE)) {
if (hid_haptic_input_configured(hdev, td->haptic, hi) == 0)
td->is_haptic_touchpad = false;
} else {
@ -2081,7 +2094,12 @@ static void mt_on_hid_hw_open(struct hid_device *hdev)
static void mt_on_hid_hw_close(struct hid_device *hdev)
{
mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE);
struct mt_device *td = hid_get_drvdata(hdev);
if (td->mtclass.quirks & MT_QUIRK_KEEP_LATENCY_ON_CLOSE)
mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_NONE);
else
mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE);
}
/*
@ -2468,6 +2486,14 @@ static const struct hid_device_id mt_devices[] = {
MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
/* Uniwill touchpads */
{ .driver_data = MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE,
HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
USB_VENDOR_ID_PIXART, 0x0255) },
{ .driver_data = MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE,
HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
USB_VENDOR_ID_PIXART, 0x0274) },
/* VTL panels */
{ .driver_data = MT_CLS_VTL,
MT_USB_DEVICE(USB_VENDOR_ID_VTL,