4 files changed, 59 insertions, 15 deletions

diff --git a/drivers/extcon/extcon-max14577.c b/drivers/extcon/extcon-max14577.c
index 22d2feb1f8bc..32f663436e6e 100644
--- a/drivers/extcon/extcon-max14577.c
+++ b/drivers/extcon/extcon-max14577.c
@@ -657,6 +657,8 @@ static int max14577_muic_probe(struct platform_device *pdev)
 	struct max14577 *max14577 = dev_get_drvdata(pdev->dev.parent);
 	struct max14577_muic_info *info;
 	int delay_jiffies;
+	int cable_type;
+	bool attached;
 	int ret;
 	int i;
 	u8 id;
@@ -725,8 +727,17 @@ static int max14577_muic_probe(struct platform_device *pdev)
 	info->path_uart = CTRL1_SW_UART;
 	delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
 
-	/* Set initial path for UART */
-	max14577_muic_set_path(info, info->path_uart, true);
+	/* Set initial path for UART when JIG is connected to get serial logs */
+	ret = max14577_bulk_read(info->max14577->regmap,
+			MAX14577_MUIC_REG_STATUS1, info->status, 2);
+	if (ret) {
+		dev_err(info->dev, "Cannot read STATUS registers\n");
+		return ret;
+	}
+	cable_type = max14577_muic_get_cable_type(info, MAX14577_CABLE_GROUP_ADC,
+					 &attached);
+	if (attached && cable_type == MAX14577_MUIC_ADC_FACTORY_MODE_UART_OFF)
+		max14577_muic_set_path(info, info->path_uart, true);
 
 	/* Check revision number of MUIC device*/
 	ret = max14577_read_reg(info->max14577->regmap,
diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c
index a79537ebb671..32fc5a66ffa9 100644
--- a/drivers/extcon/extcon-max77693.c
+++ b/drivers/extcon/extcon-max77693.c
@@ -1072,6 +1072,8 @@ static int max77693_muic_probe(struct platform_device *pdev)
 	struct max77693_reg_data *init_data;
 	int num_init_data;
 	int delay_jiffies;
+	int cable_type;
+	bool attached;
 	int ret;
 	int i;
 	unsigned int id;
@@ -1212,8 +1214,18 @@ static int max77693_muic_probe(struct platform_device *pdev)
 		delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
 	}
 
-	/* Set initial path for UART */
-	 max77693_muic_set_path(info, info->path_uart, true);
+	/* Set initial path for UART when JIG is connected to get serial logs */
+	ret = regmap_bulk_read(info->max77693->regmap_muic,
+			MAX77693_MUIC_REG_STATUS1, info->status, 2);
+	if (ret) {
+		dev_err(info->dev, "failed to read MUIC register\n");
+		return ret;
+	}
+	cable_type = max77693_muic_get_cable_type(info,
+					   MAX77693_CABLE_GROUP_ADC, &attached);
+	if (attached && (cable_type == MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON ||
+			 cable_type == MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF))
+		max77693_muic_set_path(info, info->path_uart, true);
 
 	/* Check revision number of MUIC device*/
 	ret = regmap_read(info->max77693->regmap_muic,
diff --git a/drivers/extcon/extcon-max77843.c b/drivers/extcon/extcon-max77843.c
index b98cbd0362f5..a343a6ef3506 100644
--- a/drivers/extcon/extcon-max77843.c
+++ b/drivers/extcon/extcon-max77843.c
@@ -812,6 +812,8 @@ static int max77843_muic_probe(struct platform_device *pdev)
 	struct max77693_dev *max77843 = dev_get_drvdata(pdev->dev.parent);
 	struct max77843_muic_info *info;
 	unsigned int id;
+	int cable_type;
+	bool attached;
 	int i, ret;
 
 	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
@@ -856,9 +858,19 @@ static int max77843_muic_probe(struct platform_device *pdev)
 	/* Set ADC debounce time */
 	max77843_muic_set_debounce_time(info, MAX77843_DEBOUNCE_TIME_25MS);
 
-	/* Set initial path for UART */
-	max77843_muic_set_path(info, MAX77843_MUIC_CONTROL1_SW_UART, true,
-			       false);
+	/* Set initial path for UART when JIG is connected to get serial logs */
+	ret = regmap_bulk_read(max77843->regmap_muic,
+			MAX77843_MUIC_REG_STATUS1, info->status,
+			MAX77843_MUIC_STATUS_NUM);
+	if (ret) {
+		dev_err(info->dev, "Cannot read STATUS registers\n");
+		goto err_muic_irq;
+	}
+	cable_type = max77843_muic_get_cable_type(info, MAX77843_CABLE_GROUP_ADC,
+					 &attached);
+	if (attached && cable_type == MAX77843_MUIC_ADC_FACTORY_MODE_UART_OFF)
+		max77843_muic_set_path(info, MAX77843_MUIC_CONTROL1_SW_UART,
+				       true, false);
 
 	/* Check revision number of MUIC device */
 	ret = regmap_read(max77843->regmap_muic, MAX77843_MUIC_REG_ID, &id);
diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
index bdabb2479e0d..172e116ac1ce 100644
--- a/drivers/extcon/extcon-max8997.c
+++ b/drivers/extcon/extcon-max8997.c
@@ -311,12 +311,10 @@ static int max8997_muic_handle_usb(struct max8997_muic_info *info,
 {
 	int ret = 0;
 
-	if (usb_type == MAX8997_USB_HOST) {
-		ret = max8997_muic_set_path(info, info->path_usb, attached);
-		if (ret < 0) {
-			dev_err(info->dev, "failed to update muic register\n");
-			return ret;
-		}
+	ret = max8997_muic_set_path(info, info->path_usb, attached);
+	if (ret < 0) {
+		dev_err(info->dev, "failed to update muic register\n");
+		return ret;
 	}
 
 	switch (usb_type) {
@@ -632,6 +630,8 @@ static int max8997_muic_probe(struct platform_device *pdev)
 	struct max8997_platform_data *pdata = dev_get_platdata(max8997->dev);
 	struct max8997_muic_info *info;
 	int delay_jiffies;
+	int cable_type;
+	bool attached;
 	int ret, i;
 
 	info = devm_kzalloc(&pdev->dev, sizeof(struct max8997_muic_info),
@@ -724,8 +724,17 @@ static int max8997_muic_probe(struct platform_device *pdev)
 		delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
 	}
 
-	/* Set initial path for UART */
-	 max8997_muic_set_path(info, info->path_uart, true);
+	/* Set initial path for UART when JIG is connected to get serial logs */
+	ret = max8997_bulk_read(info->muic, MAX8997_MUIC_REG_STATUS1,
+				2, info->status);
+	if (ret) {
+		dev_err(info->dev, "failed to read MUIC register\n");
+		return ret;
+	}
+	cable_type = max8997_muic_get_cable_type(info,
+					   MAX8997_CABLE_GROUP_ADC, &attached);
+	if (attached && cable_type == MAX8997_MUIC_ADC_FACTORY_MODE_UART_OFF)
+		max8997_muic_set_path(info, info->path_uart, true);
 
 	/* Set ADC debounce time */
 	max8997_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS);