From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dy1-f175.google.com (mail-dy1-f175.google.com [74.125.82.175]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B66423321A6 for ; Fri, 20 Feb 2026 07:06:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.175 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771571166; cv=none; b=q50hxwhd87TH2CF7Rmg+tVa+R6Zpi1xmUf/26ToZiedgvhBOywb5aosKPowRWHe2ZwGS2WkBmtGqFVoX4VEuV/9+j6VM58u7J8nr/8kDCn3q0qntQ5cYL5WQPtjEtpCoiX3tiICtotp0h7F0cpk9tc74/GfEekgbTaKMJ01CZiw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771571166; c=relaxed/simple; bh=EDVH4dUsTcpwD5nmM1gSIYpmlDqVKpktcjiRA1M4xFw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ovO1K/ORydQUcSdBvwE58qLhT4eTGcpYukYTgMN77dBi3HZEPhavvU0u0u5jXyJNQsBANmHQqdbot2wYHWg6tgyAR9DJ63l0wuUTgOl5WQDNR69168s1YG8VAcHYSCjWvU1MMbYLczJ5KwGmUXDqV4RqJOEkC3Aolm/y9J7qQZE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=FjkDKXcR; arc=none smtp.client-ip=74.125.82.175 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="FjkDKXcR" Received: by mail-dy1-f175.google.com with SMTP id 5a478bee46e88-2baaceb4613so1419910eec.0 for ; Thu, 19 Feb 2026 23:06:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1771571164; x=1772175964; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=msPTXKVrZ/Wht8lz5xWWNbmXT7uXYwiOMAAoN9JAe9M=; b=FjkDKXcRC9I881oUch+SJa+8PYKtBYIvaoOLU9au0Luko590XUSez5reFwsrl8mHAZ l0hJozfUNyIzekBXory7Viv9GFsykzclHf5CqsX9JAK6OoPSC/Bs8HTTYRXIWAOcYOpb PxtBzAKNjPJ2/pX+KnkZbsMXTmqDIZc/4eDq1tRLj8Fl6/KlyQh1nOVATABZ4QeTJuEM 2BOl7BtC49FE2FjICFkY5SQzOaoN9+ajixJOuNbbx4UTY94WSN40q1uzc+badAdq72ZN +4PHRxvHgLtZaMUjT7qbWwQO6XW/H4se41bTSQr9Y5RUXSv/VvhdavhnT+5+ifSpankG hf1g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1771571164; x=1772175964; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=msPTXKVrZ/Wht8lz5xWWNbmXT7uXYwiOMAAoN9JAe9M=; b=Qqo/EIWY9TERfvvZ2JtQzIK810HfFEjxTmqG0OS1H6ukBcj8qHWNyhIoFDkgozCkzE TQf2DqHqO3qA4qGcdOtEHRf2uhP7eilH2/hkQslMWWu2SaMshVkYODaKtTuqfv9+tg5r 5Gf9txYgZdbYfA7AJH3BZ/0Y3VIfEpP+ze1e9nExX8xADm0tCLCXzsXQipHomEnb7OeI NwNqa0GODMhA6BfFh4zMN/b8Sa4/96xcUDw7tr++heJDXep4yWyQEqZqA7pyGrejAmfs eoSC81YANOEqhaoQlymkjaJ+2sseGWT1hifHmP9fedD5a+LUn5X31t1zgCaqAxp3rf0R dliQ== X-Forwarded-Encrypted: i=1; AJvYcCXA0YBhkQbA7CDJVd1ZXFMsG48oyDixNapW1PZS0p9ob3cg8r/C6kWhr/8c25bwgdr2Dp3IRdkyVBU=@vger.kernel.org X-Gm-Message-State: AOJu0YyR5ab4U38cJFYYXG0bCjF81TuUDYk7bAs9O2Fjzg29wgOqLdhR bG+JhD1Uc13Eq+hc3TCbsRG2MxrgVC92KesiOG1D7XkNkNHCcou1Cppq X-Gm-Gg: AZuq6aL9o7d7QLiko5W8ftR6ibnDrky3/MIGjNbazeFspzXVy64RYvpLK19ABzzy9Wp JJY5RqQiqNx1nEi0wfknFwbKwIfKRe98hxAilvKKUC3dhwttilee+NU0GtVwAugang3jjJsWBHf 8MFJvuVPQFv5e2qQFaauEG49CIhNB0FWStf5evT5E31dnxQTlMR2pGs9SBGJkDPzP9KwqxG9RXG LwJvDHQ7jrK8qR9FsjAiOQbshuXlJmPR3Hk/A17HaJ0Z8Atdwt7RyEbzJHn9PcPJb80iiWb6Gyt TiSBTkqw4EWOkQ3ZiXz39F6P6zrs6T+6XnFgk3nhtI0GAXNT+FCr0/JteIoffRGMsdXEg5otDhr 2ESx1kec++7TnO2pWIAD2eV3nrKH/MGNhJvqVuwWk5z383s10x5mwzQ3qvwox/Ea2vQISbNP/Kk e/bgVYX0HKCB6pT9MrA8YcNjGbMAQhAsIKzn9z6bolgmamHbWsrnFlPxv0up2osiPX0psJ1MZQl mw= X-Received: by 2002:a05:7300:23d3:b0:2b6:e793:caf7 with SMTP id 5a478bee46e88-2bd6081bc54mr1964279eec.18.1771571163972; Thu, 19 Feb 2026 23:06:03 -0800 (PST) Received: from lappy (108-228-232-20.lightspeed.sndgca.sbcglobal.net. [108.228.232.20]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2bacb669f7dsm22163335eec.23.2026.02.19.23.06.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 Feb 2026 23:06:03 -0800 (PST) From: "Derek J. Clark" To: Jiri Kosina , Benjamin Tissoires Cc: Richard Hughes , Mario Limonciello , Zhixin Zhang , Mia Shao , Mark Pearson , "Pierre-Loup A . Griffais" , "Derek J . Clark" , linux-input@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 08/16] HID: hid-lenovo-go: Add OS Mode Toggle Date: Fri, 20 Feb 2026 07:05:21 +0000 Message-ID: <20260220070533.4083667-9-derekjohn.clark@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260220070533.4083667-1-derekjohn.clark@gmail.com> References: <20260220070533.4083667-1-derekjohn.clark@gmail.com> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Adds OS Mode toggle, who's primary function is to change the built-in functional chords to use the right handle legion button instead of the left handle legion button as the mode shift key. This setting needs to be restored after resume, so a reset-resume hook is added. Reviewed-by: Mark Pearson Signed-off-by: Derek J. Clark --- V3: - Fix collision with os_mode_index attribute and os_mode_index enum. --- drivers/hid/hid-lenovo-go.c | 137 ++++++++++++++++++++++++++++++++++++ 1 file changed, 137 insertions(+) diff --git a/drivers/hid/hid-lenovo-go.c b/drivers/hid/hid-lenovo-go.c index b5a1d3e1988f2..883e75894a437 100644 --- a/drivers/hid/hid-lenovo-go.c +++ b/drivers/hid/hid-lenovo-go.c @@ -76,6 +76,7 @@ struct hid_go_cfg { u32 mcu_version_product; u32 mcu_version_protocol; u32 mouse_dpi; + u8 os_mode; u8 rgb_effect; u8 rgb_en; u8 rgb_mode; @@ -166,6 +167,8 @@ enum feature_status_index { FEATURE_GAMEPAD_MODE = 0x0e, }; +#define FEATURE_OS_MODE 0x69 + enum fps_switch_status_index { FPS_STATUS_UNKNOWN, GAMEPAD, @@ -311,6 +314,23 @@ enum device_status_index { GET_HOTKEY_TRIGG_STATUS, }; +enum os_mode_cfg_index { + SET_OS_MODE = 0x09, + GET_OS_MODE, +}; + +enum os_mode_type_index { + OS_UNKNOWN, + WINDOWS, + LINUX, +}; + +static const char *const os_mode_text[] = { + [OS_UNKNOWN] = "unknown", + [WINDOWS] = "windows", + [LINUX] = "linux", +}; + static int hid_go_version_event(struct command_report *cmd_rep) { switch (cmd_rep->sub_cmd) { @@ -593,6 +613,21 @@ static int hid_go_device_status_event(struct command_report *cmd_rep) } } +static int hid_go_os_mode_cfg_event(struct command_report *cmd_rep) +{ + switch (cmd_rep->sub_cmd) { + case SET_OS_MODE: + if (cmd_rep->data[0] != 1) + return -EIO; + return 0; + case GET_OS_MODE: + drvdata.os_mode = cmd_rep->data[0]; + return 0; + default: + return -EINVAL; + }; +} + static int hid_go_set_event_return(struct command_report *cmd_rep) { if (cmd_rep->data[0] != 0) @@ -666,6 +701,9 @@ static int hid_go_raw_event(struct hid_device *hdev, struct hid_report *report, break; }; break; + case OS_MODE_DATA: + ret = hid_go_os_mode_cfg_event(cmd_rep); + break; default: goto passthrough; }; @@ -1343,6 +1381,64 @@ static ssize_t calibrate_config_options(struct device *dev, return count; } +static ssize_t os_mode_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + size_t size = 1; + int ret; + u8 val; + + ret = sysfs_match_string(os_mode_text, buf); + if (ret <= 0) + return ret; + + val = ret; + ret = mcu_property_out(drvdata.hdev, OS_MODE_DATA, FEATURE_OS_MODE, + SET_OS_MODE, USB_MCU, &val, size); + if (ret < 0) + return ret; + + drvdata.os_mode = val; + + return count; +} + +static ssize_t os_mode_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + ssize_t count = 0; + int ret; + u8 i; + + ret = mcu_property_out(drvdata.hdev, OS_MODE_DATA, FEATURE_OS_MODE, + GET_OS_MODE, USB_MCU, 0, 0); + if (ret) + return ret; + + i = drvdata.os_mode; + if (i >= ARRAY_SIZE(os_mode_text)) + return -EINVAL; + + count = sysfs_emit(buf, "%s\n", os_mode_text[i]); + + return count; +} + +static ssize_t os_mode_index_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + ssize_t count = 0; + unsigned int i; + + for (i = 1; i < ARRAY_SIZE(os_mode_text); i++) + count += sysfs_emit_at(buf, count, "%s ", os_mode_text[i]); + + if (count) + buf[count - 1] = '\n'; + + return count; +} + static int rgb_cfg_call(struct hid_device *hdev, enum mcu_command_index cmd, enum rgb_config_index index, u8 *val, size_t size) { @@ -1709,6 +1805,9 @@ static DEVICE_ATTR_RO_NAMED(gamepad_rumble_intensity_index, static DEVICE_ATTR_RW(fps_mode_dpi); static DEVICE_ATTR_RO(fps_mode_dpi_index); +static DEVICE_ATTR_RW(os_mode); +static DEVICE_ATTR_RO(os_mode_index); + static struct attribute *mcu_attrs[] = { &dev_attr_fps_mode_dpi.attr, &dev_attr_fps_mode_dpi_index.attr, @@ -1717,6 +1816,8 @@ static struct attribute *mcu_attrs[] = { &dev_attr_gamepad_mode_index.attr, &dev_attr_gamepad_rumble_intensity.attr, &dev_attr_gamepad_rumble_intensity_index.attr, + &dev_attr_os_mode.attr, + &dev_attr_os_mode_index.attr, &dev_attr_reset_mcu.attr, &dev_attr_version_firmware_mcu.attr, &dev_attr_version_gen_mcu.attr, @@ -2181,6 +2282,27 @@ static void hid_go_cfg_remove(struct hid_device *hdev) hid_set_drvdata(hdev, NULL); } +static int hid_go_cfg_reset_resume(struct hid_device *hdev) +{ + u8 os_mode = drvdata.os_mode; + int ret; + + ret = mcu_property_out(drvdata.hdev, OS_MODE_DATA, FEATURE_OS_MODE, + SET_OS_MODE, USB_MCU, &os_mode, 1); + if (ret < 0) + return ret; + + ret = mcu_property_out(drvdata.hdev, OS_MODE_DATA, FEATURE_OS_MODE, + GET_OS_MODE, USB_MCU, 0, 0); + if (ret < 0) + return ret; + + if (drvdata.os_mode != os_mode) + return -ENODEV; + + return 0; +} + static int hid_go_probe(struct hid_device *hdev, const struct hid_device_id *id) { int ret, ep; @@ -2239,6 +2361,20 @@ static void hid_go_remove(struct hid_device *hdev) } } +static int hid_go_reset_resume(struct hid_device *hdev) +{ + int ep = get_endpoint_address(hdev); + + switch (ep) { + case GO_GP_INTF_IN: + return hid_go_cfg_reset_resume(hdev); + default: + break; + } + + return 0; +} + static const struct hid_device_id hid_go_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_LEGION_GO2_XINPUT) }, @@ -2258,6 +2394,7 @@ static struct hid_driver hid_lenovo_go = { .probe = hid_go_probe, .remove = hid_go_remove, .raw_event = hid_go_raw_event, + .reset_resume = hid_go_reset_resume, }; module_hid_driver(hid_lenovo_go); -- 2.52.0