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 909F0279868; Sun, 24 Mar 2024 23:37:52 +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=1711323472; cv=none; b=u9s5kLHufWLCUiKz6eV3bssXFsU9KfLKaekkLT7N6OOglLXdSHdIGipSjhH/6qBn5nldpVO/RG7Gq76MWRrKkS3BxGnU/AZDCCl+JWzzg3v/1vtEDzBo9K00TqQBVaq3tjFb5p8m1Rb+5yozU9sveNGtfT6UMM1OAXIg9JQUSC4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711323472; c=relaxed/simple; bh=uH2XdHzls3Z2hRxQe82z2NG7LfIiK2yis/hjhBMRhxs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ThvM5ZwYzNJXe4LNDm2xIT9NHP08ShUs9HfzMlUkQcSH48pO/Sjin7ZEz8xNvpqu9BIUz+v7/6h+coT7swQgd+uLdifgwpDBu801+g2MMz5yryZlEYSYTrspRhAZ7fKg05Tld6D9VB6PRPYSkbq5+3Eh6gYDjf8fCaKzjWEy4ZA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IaycfeKn; 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="IaycfeKn" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CD762C433A6; Sun, 24 Mar 2024 23:37:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711323472; bh=uH2XdHzls3Z2hRxQe82z2NG7LfIiK2yis/hjhBMRhxs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IaycfeKn1AYh7KbKRpYC9DOR1bB0zmRSMi4DeL2ocLW6z2CtCournkZs9aEZOZOJb qDMFuSum2wYKq4QZn/juX8mMZHRPl3ApBx2tTfJVrJ+sAusZqG5WfC6lxoWhXaeVfv 0kO7wUGb4oKcjNNxMRF4jq4bili/Yb0oXe6lPf6/ZNPN85U76iNDCGY5tAvYZpPRp2 ApaHzo8G0LhVbvZJgC1T6xbm78yilSP6KrJjAVmc8BJtIdVKUnDJROYwDdoDVd0C+z 3gQC/qLKXzd3RhjOADeOK+gwxCaaj8XJaR/yzK7UJDobSilZjbXgEizdcCHDjRwWES XW+KGnF40SNaw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Mikhail Khvainitski , Jiri Kosina , Sasha Levin Subject: [PATCH 5.15 177/317] HID: lenovo: Add middleclick_workaround sysfs knob for cptkbd Date: Sun, 24 Mar 2024 19:32:37 -0400 Message-ID: <20240324233458.1352854-178-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240324233458.1352854-1-sashal@kernel.org> References: <20240324233458.1352854-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@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: Mikhail Khvainitski [ Upstream commit 2814646f76f8518326964f12ff20aaee70ba154d ] Previous attempt to autodetect well-behaving patched firmware introduced in commit 46a0a2c96f0f ("HID: lenovo: Detect quirk-free fw on cptkbd and stop applying workaround") has shown that there are false-positives on original firmware (on both 1st gen and 2nd gen keyboards) which causes the middle button click workaround to be mistakenly disabled. This commit adds explicit parameter to sysfs to control this workaround. Fixes: 46a0a2c96f0f ("HID: lenovo: Detect quirk-free fw on cptkbd and stop applying workaround") Fixes: 43527a0094c1 ("HID: lenovo: Restrict detection of patched firmware only to USB cptkbd") Signed-off-by: Mikhail Khvainitski Signed-off-by: Jiri Kosina Signed-off-by: Sasha Levin --- drivers/hid/hid-lenovo.c | 57 +++++++++++++++++++++++++++------------- 1 file changed, 39 insertions(+), 18 deletions(-) diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c index 965bddaa90aee..44fd4a05ace38 100644 --- a/drivers/hid/hid-lenovo.c +++ b/drivers/hid/hid-lenovo.c @@ -53,10 +53,10 @@ struct lenovo_drvdata { /* 0: Up * 1: Down (undecided) * 2: Scrolling - * 3: Patched firmware, disable workaround */ u8 middlebutton_state; bool fn_lock; + bool middleclick_workaround_cptkbd; }; #define map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c)) @@ -469,6 +469,36 @@ static ssize_t attr_sensitivity_store_cptkbd(struct device *dev, return count; } +static ssize_t attr_middleclick_workaround_show_cptkbd(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct hid_device *hdev = to_hid_device(dev); + struct lenovo_drvdata *cptkbd_data = hid_get_drvdata(hdev); + + return snprintf(buf, PAGE_SIZE, "%u\n", + cptkbd_data->middleclick_workaround_cptkbd); +} + +static ssize_t attr_middleclick_workaround_store_cptkbd(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count) +{ + struct hid_device *hdev = to_hid_device(dev); + struct lenovo_drvdata *cptkbd_data = hid_get_drvdata(hdev); + int value; + + if (kstrtoint(buf, 10, &value)) + return -EINVAL; + if (value < 0 || value > 1) + return -EINVAL; + + cptkbd_data->middleclick_workaround_cptkbd = !!value; + + return count; +} + static struct device_attribute dev_attr_fn_lock = __ATTR(fn_lock, S_IWUSR | S_IRUGO, @@ -480,10 +510,16 @@ static struct device_attribute dev_attr_sensitivity_cptkbd = attr_sensitivity_show_cptkbd, attr_sensitivity_store_cptkbd); +static struct device_attribute dev_attr_middleclick_workaround_cptkbd = + __ATTR(middleclick_workaround, S_IWUSR | S_IRUGO, + attr_middleclick_workaround_show_cptkbd, + attr_middleclick_workaround_store_cptkbd); + static struct attribute *lenovo_attributes_cptkbd[] = { &dev_attr_fn_lock.attr, &dev_attr_sensitivity_cptkbd.attr, + &dev_attr_middleclick_workaround_cptkbd.attr, NULL }; @@ -534,23 +570,7 @@ static int lenovo_event_cptkbd(struct hid_device *hdev, { struct lenovo_drvdata *cptkbd_data = hid_get_drvdata(hdev); - if (cptkbd_data->middlebutton_state != 3) { - /* REL_X and REL_Y events during middle button pressed - * are only possible on patched, bug-free firmware - * so set middlebutton_state to 3 - * to never apply workaround anymore - */ - if (hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD && - cptkbd_data->middlebutton_state == 1 && - usage->type == EV_REL && - (usage->code == REL_X || usage->code == REL_Y)) { - cptkbd_data->middlebutton_state = 3; - /* send middle button press which was hold before */ - input_event(field->hidinput->input, - EV_KEY, BTN_MIDDLE, 1); - input_sync(field->hidinput->input); - } - + if (cptkbd_data->middleclick_workaround_cptkbd) { /* "wheel" scroll events */ if (usage->type == EV_REL && (usage->code == REL_WHEEL || usage->code == REL_HWHEEL)) { @@ -1015,6 +1035,7 @@ static int lenovo_probe_cptkbd(struct hid_device *hdev) cptkbd_data->middlebutton_state = 0; cptkbd_data->fn_lock = true; cptkbd_data->sensitivity = 0x05; + cptkbd_data->middleclick_workaround_cptkbd = true; lenovo_features_set_cptkbd(hdev); ret = sysfs_create_group(&hdev->dev.kobj, &lenovo_attr_group_cptkbd); -- 2.43.0