From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 61C99373BF6; Sat, 28 Feb 2026 17:35:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300149; cv=none; b=T/rnNZf2EE6f8US31GMo73a6SP3SB/vNbl/rhesEYcCJuKVa3Rku8Y2FYZ2T3EhZrau4uOSeQ3JYI7LWgGiZSj7aeCyjHv32u4g+MRwcBw1EgE/ndKqEAOm/OT2S2DiXDdQHFKoy9UnmCHIkRN56rq/azTVeklsEpBgnC6ErxeU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300149; c=relaxed/simple; bh=hkP8rxH0F6ii2fNCCVUvAtZjHRzD7vUzYkbdE0yLUZg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SP4JJ6JXbAXasRg0XAAX9seU483vbOZfEcdCq/s/bFak22oIVkZEzpTlnq1PcnXxHMNg1WQjFp4ELjAuizFYNXRYHiyxE7rZ9+VZreXKJL2tXuA4UEvDBl1IUBI3iyH3z6ShSdz6dUoov8hcsYVnP5hdWfTzOalB98NhXLcyg5U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=JK+w/X4K; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="JK+w/X4K" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4847BC19423; Sat, 28 Feb 2026 17:35:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772300149; bh=hkP8rxH0F6ii2fNCCVUvAtZjHRzD7vUzYkbdE0yLUZg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JK+w/X4K16SbRCRY2Tku0zfw7benScw07G2vDDKJqnWzOeyV38C4wdlrPxI3YXjFx 5DCg1S4FANITkzNUjsydn4OQkHmNz3wDKCvGzrzhnL7ZEV+DqVWH/PfgDn8RHJGGj1 QrnIP/M893V0wVgpOSPndfns5M2+L5VLXZkJZGFEZQ0Bg8/jaoiXIxyvIbgnxOuQfP JqbcR/WpGlg4HlYLyR1/8l9CABaXejifU7HYL8HmjKClZELHguZWJd/HsgiaGfiHj8 VMixL0ShXNb4hMXTaESjrCV/sTEzyu286n3kTVkshBtdPFl+DAVrdfD1i6eegwApod cGjgilFlrjcCg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Brian Howard , Kris Fredrick , Andrei Shumailov , Jiri Kosina , Sasha Levin Subject: [PATCH 6.19 167/844] HID: multitouch: add quirks for Lenovo Yoga Book 9i Date: Sat, 28 Feb 2026 12:21:20 -0500 Message-ID: <20260228173244.1509663-168-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228173244.1509663-1-sashal@kernel.org> References: <20260228173244.1509663-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Brian Howard [ Upstream commit 822bc5b3744b0b2c2c9678aa1d80b2cf04fdfabf ] The Lenovo Yoga Book 9i is a dual-screen laptop, with a single composite USB device providing both touch and tablet interfaces for both screens. All inputs report through a single device, differentiated solely by report numbers. As there is no way for udev to differentiate the inputs based on USB vendor/product ID or interface numbers, custom naming is required to match against for downstream configuration. A firmware bug also results in an erroneous InRange message report being received after the stylus leaves proximity, blocking later touch events. Add required quirks for Gen 8 to Gen 10 models, including a new quirk providing for custom input device naming and dropping erroneous InRange reports. Signed-off-by: Brian Howard Tested-by: Brian Howard Tested-by: Kris Fredrick Reported-by: Andrei Shumailov Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220386 Signed-off-by: Jiri Kosina Signed-off-by: Sasha Levin --- drivers/hid/hid-ids.h | 1 + drivers/hid/hid-multitouch.c | 72 ++++++++++++++++++++++++++++++++++++ 2 files changed, 73 insertions(+) diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index 9c2bf584d9f6f..5a18cb41e6d79 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -841,6 +841,7 @@ #define USB_DEVICE_ID_LENOVO_X1_TAB3 0x60b5 #define USB_DEVICE_ID_LENOVO_X12_TAB 0x60fe #define USB_DEVICE_ID_LENOVO_X12_TAB2 0x61ae +#define USB_DEVICE_ID_LENOVO_YOGABOOK9I 0x6161 #define USB_DEVICE_ID_LENOVO_OPTICAL_USB_MOUSE_600E 0x600e #define USB_DEVICE_ID_LENOVO_PIXART_USB_MOUSE_608D 0x608d #define USB_DEVICE_ID_LENOVO_PIXART_USB_MOUSE_6019 0x6019 diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index b1c3ef1290587..f21850f7d89e4 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -76,6 +76,7 @@ MODULE_LICENSE("GPL"); #define MT_QUIRK_DISABLE_WAKEUP BIT(21) #define MT_QUIRK_ORIENTATION_INVERT BIT(22) #define MT_QUIRK_APPLE_TOUCHBAR BIT(23) +#define MT_QUIRK_YOGABOOK9I BIT(24) #define MT_INPUTMODE_TOUCHSCREEN 0x02 #define MT_INPUTMODE_TOUCHPAD 0x03 @@ -231,6 +232,7 @@ static void mt_post_parse(struct mt_device *td, struct mt_application *app); #define MT_CLS_RAZER_BLADE_STEALTH 0x0112 #define MT_CLS_SMART_TECH 0x0113 #define MT_CLS_APPLE_TOUCHBAR 0x0114 +#define MT_CLS_YOGABOOK9I 0x0115 #define MT_CLS_SIS 0x0457 #define MT_DEFAULT_MAXCONTACT 10 @@ -427,6 +429,14 @@ static const struct mt_class mt_classes[] = { .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | MT_QUIRK_ALWAYS_VALID | MT_QUIRK_CONTACT_CNT_ACCURATE, + }, + { .name = MT_CLS_YOGABOOK9I, + .quirks = MT_QUIRK_ALWAYS_VALID | + MT_QUIRK_FORCE_MULTI_INPUT | + MT_QUIRK_SEPARATE_APP_REPORT | + MT_QUIRK_HOVERING | + MT_QUIRK_YOGABOOK9I, + .export_all_inputs = true }, { } }; @@ -1576,6 +1586,38 @@ static void mt_report(struct hid_device *hid, struct hid_report *report) if (rdata && rdata->is_mt_collection) return mt_touch_report(hid, rdata); + /* Lenovo Yoga Book 9i requires consuming and dropping certain bogus reports */ + if (rdata && rdata->application && + (rdata->application->quirks & MT_QUIRK_YOGABOOK9I)) { + + bool all_zero_report = true; + + for (int f = 0; f < report->maxfield && all_zero_report; f++) { + struct hid_field *fld = report->field[f]; + + for (int i = 0; i < fld->report_count; i++) { + unsigned int usage = fld->usage[i].hid; + + if (usage == HID_DG_INRANGE || + usage == HID_DG_TIPSWITCH || + usage == HID_DG_BARRELSWITCH || + usage == HID_DG_BARRELSWITCH2 || + usage == HID_DG_CONTACTID || + usage == HID_DG_TILT_X || + usage == HID_DG_TILT_Y) { + + if (fld->value[i] != 0) { + all_zero_report = false; + break; + } + } + } + } + + if (all_zero_report) + return; + } + if (field && field->hidinput && field->hidinput->input) input_sync(field->hidinput->input); } @@ -1772,6 +1814,30 @@ static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) break; } + /* Lenovo Yoga Book 9i requires custom naming to allow differentiation in udev */ + if (hi->report && td->mtclass.quirks & MT_QUIRK_YOGABOOK9I) { + switch (hi->report->id) { + case 48: + suffix = "Touchscreen Top"; + break; + case 56: + suffix = "Touchscreen Bottom"; + break; + case 20: + suffix = "Stylus Top"; + break; + case 40: + suffix = "Stylus Bottom"; + break; + case 80: + suffix = "Emulated Touchpad"; + break; + default: + suffix = ""; + break; + } + } + if (suffix) { hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "%s %s", hdev->name, suffix); @@ -2277,6 +2343,12 @@ static const struct hid_device_id mt_devices[] = { USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_X12_TAB2) }, + /* Lenovo Yoga Book 9i */ + { .driver_data = MT_CLS_YOGABOOK9I, + HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, + USB_VENDOR_ID_LENOVO, + USB_DEVICE_ID_LENOVO_YOGABOOK9I) }, + /* Logitech devices */ { .driver_data = MT_CLS_NSMU, HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH_WIN_8, -- 2.51.0