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[108.228.232.20]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2b73aa22707sm5160014eec.29.2026.01.23.17.49.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Jan 2026 17:49:15 -0800 (PST) From: "Derek J. Clark" To: Jiri Kosina , Benjamin Tissoires Cc: 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 v3 05/16] HID: hid-lenovo-go: Add FPS Mode DPI settings Date: Sat, 24 Jan 2026 01:48:56 +0000 Message-ID: <20260124014907.991265-6-derekjohn.clark@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260124014907.991265-1-derekjohn.clark@gmail.com> References: <20260124014907.991265-1-derekjohn.clark@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Adds attribute that enables selection of the DPI of the optical sensor when the right handle toggle is set to FPS mode. Signed-off-by: Derek J. Clark --- drivers/hid/hid-lenovo-go.c | 68 +++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) diff --git a/drivers/hid/hid-lenovo-go.c b/drivers/hid/hid-lenovo-go.c index fe39a2b38f38..5d454cd2cdae 100644 --- a/drivers/hid/hid-lenovo-go.c +++ b/drivers/hid/hid-lenovo-go.c @@ -64,6 +64,7 @@ struct hid_go_cfg { u32 mcu_version_hardware; u32 mcu_version_product; u32 mcu_version_protocol; + u32 mouse_dpi; u8 rgb_en; u8 tp_en; u8 tp_vibration_en; @@ -217,6 +218,8 @@ static const char *const rumble_mode_text[] =3D { [RUMBLE_MODE_RPG] =3D "rpg", }; =20 +#define FPS_MODE_DPI 0x02 + static int hid_go_version_event(struct command_report *cmd_rep) { switch (cmd_rep->sub_cmd) { @@ -424,6 +427,16 @@ static int hid_go_motor_event(struct command_report *c= md_rep) return -EINVAL; } =20 +static int hid_go_fps_dpi_event(struct command_report *cmd_rep) +{ + if (cmd_rep->sub_cmd !=3D FPS_MODE_DPI) + return -EINVAL; + + drvdata.mouse_dpi =3D get_unaligned_le32(cmd_rep->data); + + return 0; +} + static int hid_go_set_event_return(struct command_report *cmd_rep) { if (cmd_rep->data[0] !=3D 0) @@ -474,8 +487,12 @@ static int hid_go_raw_event(struct hid_device *hdev, s= truct hid_report *report, case GET_MOTOR_CFG: ret =3D hid_go_motor_event(cmd_rep); break; + case GET_DPI_CFG: + ret =3D hid_go_fps_dpi_event(cmd_rep); + break; case SET_FEATURE_STATUS: case SET_MOTOR_CFG: + case SET_DPI_CFG: ret =3D hid_go_set_event_return(cmd_rep); break; default: @@ -1014,6 +1031,52 @@ static ssize_t motor_config_options(struct device *d= ev, return count; } =20 +static ssize_t fps_mode_dpi_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) + +{ + size_t size =3D 4; + u32 value; + u8 val[4]; + int ret; + + ret =3D kstrtou32(buf, 10, &value); + if (ret) + return ret; + + if (value !=3D 500 && value !=3D 800 && value !=3D 1200 && value !=3D 180= 0) + return -EINVAL; + + put_unaligned_le32(value, val); + + ret =3D mcu_property_out(drvdata.hdev, MCU_CONFIG_DATA, SET_DPI_CFG, + FPS_MODE_DPI, UNSPECIFIED, val, size); + if (ret < 0) + return ret; + + return count; +} + +static ssize_t fps_mode_dpi_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int ret; + + ret =3D mcu_property_out(drvdata.hdev, MCU_CONFIG_DATA, GET_DPI_CFG, + FPS_MODE_DPI, UNSPECIFIED, 0, 0); + if (ret < 0) + return ret; + + return sysfs_emit(buf, "%u\n", drvdata.mouse_dpi); +} + +static ssize_t fps_mode_dpi_index_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sysfs_emit(buf, "500 800 1200 1800\n"); +} + #define LEGO_DEVICE_ATTR_RW(_name, _attrname, _dtype, _rtype, _group) = \ static ssize_t _name##_store(struct device *dev, \ struct device_attribute *attr, \ @@ -1085,7 +1148,12 @@ LEGO_DEVICE_ATTR_RW(gamepad_rumble_intensity, "rumbl= e_intensity", UNSPECIFIED, static DEVICE_ATTR_RO_NAMED(gamepad_rumble_intensity_index, "rumble_intensity_index"); =20 +static DEVICE_ATTR_RW(fps_mode_dpi); +static DEVICE_ATTR_RO(fps_mode_dpi_index); + static struct attribute *mcu_attrs[] =3D { + &dev_attr_fps_mode_dpi.attr, + &dev_attr_fps_mode_dpi_index.attr, &dev_attr_fps_switch_status.attr, &dev_attr_gamepad_mode.attr, &dev_attr_gamepad_mode_index.attr, --=20 2.52.0