The touchpad present in the Dell Precision 7550 and 7750 laptops
reports a HID_DG_BUTTONTYPE of type MT_BUTTONTYPE_CLICKPAD. However,
the device is not a clickpad, it is a touchpad with physical buttons.
In order to fix this issue, a quirk for the device was introduced in
libinput [1] [2] to disable the INPUT_PROP_BUTTONPAD property:
[Precision 7x50 Touchpad]
MatchBus=i2c
MatchUdevType=touchpad
MatchDMIModalias=dmi:*svnDellInc.:pnPrecision7?50*
AttrInputPropDisable=INPUT_PROP_BUTTONPAD
However, because of the change introduced in 37ef4c19b4 ("Input: clear
BTN_RIGHT/MIDDLE on buttonpads") the BTN_RIGHT key bit is not mapped
anymore breaking the device right click button.
In order to fix the issue, create a quirk for the device forcing its
button type to touchpad regardless of the value reported by the
firmware.
[1] https://gitlab.freedesktop.org/libinput/libinput/-/merge_requests/481
[2] https://bugzilla.redhat.com/show_bug.cgi?id=1868789
Fixes: 37ef4c19b4 ("Input: clear BTN_RIGHT/MIDDLE on buttonpads")
Signed-off-by: José Expósito <jose.exposito89@xxxxxxxxx>
---
drivers/hid/hid-ids.h | 3 +++
drivers/hid/hid-multitouch.c | 20 ++++++++++++++++++++
2 files changed, 23 insertions(+)
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 78bd3ddda442..6cf7a5b6835b 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -287,6 +287,9 @@
#define USB_VENDOR_ID_CIDC 0x1677
+#define USB_VENDOR_ID_CIRQUE_CORP 0x0488
+#define USB_DEVICE_ID_DELL_PRECISION_7X50 0x120A
+
#define USB_VENDOR_ID_CJTOUCH 0x24b8
#define USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020 0x0020
#define USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040 0x0040
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 99eabfb4145b..f012cf8e0b8c 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -71,6 +71,7 @@ MODULE_LICENSE("GPL");
#define MT_QUIRK_SEPARATE_APP_REPORT BIT(19)
#define MT_QUIRK_FORCE_MULTI_INPUT BIT(20)
#define MT_QUIRK_DISABLE_WAKEUP BIT(21)
+#define MT_QUIRK_BUTTONTYPE_TOUCHPAD BIT(22)
#define MT_INPUTMODE_TOUCHSCREEN 0x02
#define MT_INPUTMODE_TOUCHPAD 0x03
@@ -194,6 +195,7 @@ static void mt_post_parse(struct mt_device *td, struct mt_application *app);
#define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015
#define MT_CLS_WIN_8_DISABLE_WAKEUP 0x0016
#define MT_CLS_WIN_8_NO_STICKY_FINGERS 0x0017
+#define MT_CLS_BUTTONTYPE_TOUCHPAD 0x0018
/* vendor specific classes */
#define MT_CLS_3M 0x0101
@@ -302,6 +304,15 @@ static const struct mt_class mt_classes[] = {
MT_QUIRK_CONTACT_CNT_ACCURATE |
MT_QUIRK_WIN8_PTP_BUTTONS,
.export_all_inputs = true },
+ { .name = MT_CLS_BUTTONTYPE_TOUCHPAD,
+ .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_BUTTONTYPE_TOUCHPAD,
+ .export_all_inputs = true },
/*
* vendor specific classes
@@ -1286,6 +1297,9 @@ static int mt_touch_input_configured(struct hid_device *hdev,
(app->buttons_count == 1))
td->is_buttonpad = true;
+ if (app->quirks & MT_QUIRK_BUTTONTYPE_TOUCHPAD)
+ td->is_buttonpad = false;
+
if (td->is_buttonpad)
__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
@@ -1872,6 +1886,12 @@ static const struct hid_device_id mt_devices[] = {
MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
+ /* Cirque Corp (Dell Precision 7550 and 7750 touchpad) */
+ { .driver_data = MT_CLS_BUTTONTYPE_TOUCHPAD,
+ HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
+ USB_VENDOR_ID_CIRQUE_CORP,
+ USB_DEVICE_ID_DELL_PRECISION_7X50) },
+
/* CJTouch panels */
{ .driver_data = MT_CLS_NSMU,
MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
--
2.25.1
