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Aditya Garg
39 lines
1.3 KiB
Diff
39 lines
1.3 KiB
Diff
From 075eeea99fd4fe17ff5ce506fe429493fd5f8a7f Mon Sep 17 00:00:00 2001
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From: Kerem Karabay <kekrby@gmail.com>
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Date: Tue, 27 May 2025 22:13:15 +0530
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Subject: [PATCH 3/5] HID: multitouch: take cls->maxcontacts into account for
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Apple Touch Bar even without a HID_DG_CONTACTMAX field
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In Apple Touch Bar, the HID_DG_CONTACTMAX is not present, but the maximum
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contact count is still greater than the default. Add quirks for the same.
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Acked-by: Benjamin Tissoires <bentiss@kernel.org>
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Signed-off-by: Kerem Karabay <kekrby@gmail.com>
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Co-developed-by: Aditya Garg <gargaditya08@live.com>
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Signed-off-by: Aditya Garg <gargaditya08@live.com>
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---
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drivers/hid/hid-multitouch.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
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index 99ecf6c8e..f71500d1f 100644
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--- a/drivers/hid/hid-multitouch.c
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+++ b/drivers/hid/hid-multitouch.c
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@@ -1335,6 +1335,13 @@ static int mt_touch_input_configured(struct hid_device *hdev,
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struct input_dev *input = hi->input;
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int ret;
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+ /*
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+ * HID_DG_CONTACTMAX field is not present on Apple Touch Bars,
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+ * but the maximum contact count is greater than the default.
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+ */
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+ if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR && cls->maxcontacts)
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+ td->maxcontacts = cls->maxcontacts;
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+
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if (!td->maxcontacts)
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td->maxcontacts = MT_DEFAULT_MAXCONTACT;
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--
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2.49.0
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