From: Kerem Karabay <redacted>
In Apple Touch Bar, the HID_DG_CONTACTMAX is not present, but the maximum
contact count is still greater than the default. Add quirks for the same.
Acked-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Kerem Karabay <redacted>
Co-developed-by: Aditya Garg <redacted>
Signed-off-by: Aditya Garg <redacted>
---
drivers/hid/hid-multitouch.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 99ecf6c8e..f71500d1f 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -1335,6 +1335,13 @@ static int mt_touch_input_configured(struct hid_device *hdev,
struct input_dev *input = hi->input;
int ret;
+ /*
+ * HID_DG_CONTACTMAX field is not present on Apple Touch Bars,
+ * but the maximum contact count is greater than the default.
+ */
+ if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR && cls->maxcontacts)
+ td->maxcontacts = cls->maxcontacts;
+
if (!td->maxcontacts)
td->maxcontacts = MT_DEFAULT_MAXCONTACT;
--
2.43.0