[PATCH v3 7/7] HID: hid-lenovo-go: clear calibration status on start

[Aditya Dash <mradityadash@gmail.com>]

A completed calibration leaves success or failure in its status file. If
the next calibration has the same result, userspace sees no change and
cannot tell when the new attempt starts or finishes.

Link each calibration action attribute to its status field. Set only that
field to unknown before submitting Start. Stop leaves the status unchanged,
and the next firmware result replaces unknown with success or failure.

Fixes: 995887a10da1 ("HID: hid-lenovo-go: Add Calibration Settings")
Assisted-by: Pi:gpt-5.6-sol
Signed-off-by: Aditya Dash <mradityadash@gmail.com>
---
 drivers/hid/hid-lenovo-go.c | 38 +++++++++++++++++++++++++++++--------
 1 file changed, 30 insertions(+), 8 deletions(-)

diff --git a/drivers/hid/hid-lenovo-go.c b/drivers/hid/hid-lenovo-go.c
index a6dec5490d17..749536e19d2d 100644
--- a/drivers/hid/hid-lenovo-go.c
+++ b/drivers/hid/hid-lenovo-go.c
@@ -111,6 +111,11 @@ struct go_cfg_attr {
 	u8 index;
 };
 
+struct go_cal_cfg_attr {
+	u8 index;
+	u8 *status;
+};
+
 struct command_report {
 	u8 report_id;
 	u8 id;
@@ -1410,7 +1415,8 @@ static ssize_t device_status_show(struct device *dev,
 static ssize_t calibrate_config_store(struct device *dev,
 				      struct device_attribute *attr,
 				      const char *buf, u8 cmd, u8 sub_cmd,
-				      size_t count, enum dev_type device_type)
+				      size_t count, enum dev_type device_type,
+				      u8 *cal_status)
 {
 	u8 val;
 	int ret;
@@ -1422,6 +1428,9 @@ static ssize_t calibrate_config_store(struct device *dev,
 		return -EINVAL;
 
 	val = ret;
+	if (val == CAL_START)
+		*cal_status = CAL_STAT_UNKNOWN;
+
 	ret = mcu_property_out(drvdata.hdev, MCU_CONFIG_DATA, cmd, sub_cmd,
 			       device_type, &val, sizeof(val));
 	if (ret < 0)
@@ -1818,7 +1827,8 @@ static void hid_go_brightness_set(struct led_classdev *led_cdev,
 				     const char *buf, size_t count)           \
 	{                                                                     \
 		return calibrate_config_store(dev, attr, buf, _name.index,    \
-					      _scmd, count, _dtype);          \
+					      _scmd, count, _dtype,           \
+					      _name.status);                   \
 	}                                                                     \
 	static ssize_t _name##_##_rtype##_show(                               \
 		struct device *dev, struct device_attribute *attr, char *buf) \
@@ -1978,17 +1988,23 @@ LEGO_DEVICE_ATTR_RW(rumble_notification_left, "rumble_notification",
 static DEVICE_ATTR_RO_NAMED(rumble_notification_left_index,
 			    "rumble_notification_index");
 
-static struct go_cfg_attr cal_trigg_left = { SET_TRIGGER_CFG };
+static struct go_cal_cfg_attr cal_trigg_left = {
+	SET_TRIGGER_CFG, &drvdata.gp_left_trigg_cal_status
+};
 LEGO_CAL_DEVICE_ATTR(cal_trigg_left, "calibrate_trigger", TRIGGER_CALIBRATE,
 		     LEFT_CONTROLLER, index);
 static DEVICE_ATTR_RO_NAMED(cal_trigg_left_index, "calibrate_trigger_index");
 
-static struct go_cfg_attr cal_joy_left = { SET_JOYSTICK_CFG };
+static struct go_cal_cfg_attr cal_joy_left = {
+	SET_JOYSTICK_CFG, &drvdata.gp_left_joy_cal_status
+};
 LEGO_CAL_DEVICE_ATTR(cal_joy_left, "calibrate_joystick", JOYSTICK_CALIBRATE,
 		     LEFT_CONTROLLER, index);
 static DEVICE_ATTR_RO_NAMED(cal_joy_left_index, "calibrate_joystick_index");
 
-static struct go_cfg_attr cal_gyro_left = { SET_GYRO_CFG };
+static struct go_cal_cfg_attr cal_gyro_left = {
+	SET_GYRO_CFG, &drvdata.gp_left_gyro_cal_status
+};
 LEGO_CAL_DEVICE_ATTR(cal_gyro_left, "calibrate_gyro", GYRO_CALIBRATE,
 		     LEFT_CONTROLLER, index);
 static DEVICE_ATTR_RO_NAMED(cal_gyro_left_index, "calibrate_gyro_index");
@@ -2085,17 +2101,23 @@ LEGO_DEVICE_ATTR_RW(rumble_notification_right, "rumble_notification",
 static DEVICE_ATTR_RO_NAMED(rumble_notification_right_index,
 			    "rumble_notification_index");
 
-static struct go_cfg_attr cal_trigg_right = { SET_TRIGGER_CFG };
+static struct go_cal_cfg_attr cal_trigg_right = {
+	SET_TRIGGER_CFG, &drvdata.gp_right_trigg_cal_status
+};
 LEGO_CAL_DEVICE_ATTR(cal_trigg_right, "calibrate_trigger", TRIGGER_CALIBRATE,
 		     RIGHT_CONTROLLER, index);
 static DEVICE_ATTR_RO_NAMED(cal_trigg_right_index, "calibrate_trigger_index");
 
-static struct go_cfg_attr cal_joy_right = { SET_JOYSTICK_CFG };
+static struct go_cal_cfg_attr cal_joy_right = {
+	SET_JOYSTICK_CFG, &drvdata.gp_right_joy_cal_status
+};
 LEGO_CAL_DEVICE_ATTR(cal_joy_right, "calibrate_joystick", JOYSTICK_CALIBRATE,
 		     RIGHT_CONTROLLER, index);
 static DEVICE_ATTR_RO_NAMED(cal_joy_right_index, "calibrate_joystick_index");
 
-static struct go_cfg_attr cal_gyro_right = { SET_GYRO_CFG };
+static struct go_cal_cfg_attr cal_gyro_right = {
+	SET_GYRO_CFG, &drvdata.gp_right_gyro_cal_status
+};
 LEGO_CAL_DEVICE_ATTR(cal_gyro_right, "calibrate_gyro", GYRO_CALIBRATE,
 		     RIGHT_CONTROLLER, index);
 static DEVICE_ATTR_RO_NAMED(cal_gyro_right_index, "calibrate_gyro_index");
-- 
2.55.0