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HID: multitouch: set INPUT_PROP_PRESSUREPAD based on Digitizer/Button Type

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A Digitizer/Button Type value of 1 indicates the device is a
pressurepad, see
https://learn.microsoft.com/en-us/windows-hardware/design/component-guidelines/touchpad-windows-precision-touchpad-collection#device-capabilities-feature-report

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
This commit is contained in:
Peter Hutterer 2025-12-22 09:43:34 +10:00 committed by Benjamin Tissoires
parent c06bc35575
commit 2b29a90131
1 changed files with 11 additions and 1 deletions
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12
drivers/hid/hid-multitouch.c
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@ -81,6 +81,7 @@ MODULE_LICENSE("GPL");
#define MT_INPUTMODE_TOUCHPAD 0x03
#define MT_BUTTONTYPE_CLICKPAD 0
#define MT_BUTTONTYPE_PRESSUREPAD 1
enum latency_mode {
HID_LATENCY_NORMAL = 0,
@ -179,6 +180,7 @@ struct mt_device {
__u8 inputmode_value; /* InputMode HID feature value */
__u8 maxcontacts;
bool is_buttonpad; /* is this device a button pad? */
bool is_pressurepad; /* is this device a pressurepad? */
bool is_haptic_touchpad; /* is this device a haptic touchpad? */
bool serial_maybe; /* need to check for serial protocol */
@ -531,8 +533,14 @@ static void mt_feature_mapping(struct hid_device *hdev,
}
mt_get_feature(hdev, field->report);
if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
switch (field->value[usage->usage_index]) {
case MT_BUTTONTYPE_CLICKPAD:
td->is_buttonpad = true;
break;
case MT_BUTTONTYPE_PRESSUREPAD:
td->is_pressurepad = true;
break;
}
break;
case 0xff0000c5:
@ -1394,6 +1402,8 @@ static int mt_touch_input_configured(struct hid_device *hdev,
if (td->is_buttonpad)
__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
if (td->is_pressurepad)
__set_bit(INPUT_PROP_PRESSUREPAD, input->propbit);
app->pending_palm_slots = devm_kcalloc(&hi->input->dev,
BITS_TO_LONGS(td->maxcontacts),