From: Xu Yang Date: Fri, 26 Sep 2025 02:53:08 +0000 (+0800) Subject: extcon: ptn5150: Add Type-C orientation switch support X-Git-Tag: v7.1-rc1~17^2~2^2~2 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=842546c56345eebc2396927df5b4e933d90de43a;p=thirdparty%2Fkernel%2Fstable.git extcon: ptn5150: Add Type-C orientation switch support PTN5150 is able to detect CC polarity. The field[1:0] of CC status register (04H) will keep the result. 00: Cable Not Attached 01: CC1 is connected (normal orientation) 10: CC2 is connected (reversed orientation) 11: Reserved Add orientation switch support to correctly set orientation of multiplexer according to CC status. Acked-by: Chanwoo Choi Reviewed-by: Frank Li Signed-off-by: Xu Yang Signed-off-by: Chanwoo Choi Link: https://lore.kernel.org/lkml/20250926025309.24267-2-xu.yang_2@nxp.com/ --- diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig index aec46bf03302c..68d9df7d2dae0 100644 --- a/drivers/extcon/Kconfig +++ b/drivers/extcon/Kconfig @@ -158,6 +158,7 @@ config EXTCON_PTN5150 tristate "NXP PTN5150 CC LOGIC USB EXTCON support" depends on I2C && (GPIOLIB || COMPILE_TEST) depends on USB_ROLE_SWITCH || !USB_ROLE_SWITCH + depends on TYPEC || !TYPEC select REGMAP_I2C help Say Y here to enable support for USB peripheral and USB host diff --git a/drivers/extcon/extcon-ptn5150.c b/drivers/extcon/extcon-ptn5150.c index 31970fb34fcb2..de753d00c4c2b 100644 --- a/drivers/extcon/extcon-ptn5150.c +++ b/drivers/extcon/extcon-ptn5150.c @@ -18,6 +18,7 @@ #include #include #include +#include /* PTN5150 registers */ #define PTN5150_REG_DEVICE_ID 0x01 @@ -38,7 +39,11 @@ #define PTN5150_REG_DEVICE_ID_VERSION GENMASK(7, 3) #define PTN5150_REG_DEVICE_ID_VENDOR GENMASK(2, 0) +#define PTN5150_POLARITY_CC1 0x1 +#define PTN5150_POLARITY_CC2 0x2 + #define PTN5150_REG_CC_PORT_ATTACHMENT GENMASK(4, 2) +#define PTN5150_REG_CC_POLARITY GENMASK(1, 0) #define PTN5150_REG_CC_VBUS_DETECTION BIT(7) #define PTN5150_REG_INT_CABLE_ATTACH_MASK BIT(0) #define PTN5150_REG_INT_CABLE_DETACH_MASK BIT(1) @@ -53,6 +58,7 @@ struct ptn5150_info { int irq; struct work_struct irq_work; struct mutex mutex; + struct typec_switch *orient_sw; struct usb_role_switch *role_sw; }; @@ -71,6 +77,7 @@ static const struct regmap_config ptn5150_regmap_config = { static void ptn5150_check_state(struct ptn5150_info *info) { + enum typec_orientation orient = TYPEC_ORIENTATION_NONE; unsigned int port_status, reg_data, vbus; enum usb_role usb_role = USB_ROLE_NONE; int ret; @@ -81,6 +88,23 @@ static void ptn5150_check_state(struct ptn5150_info *info) return; } + orient = FIELD_GET(PTN5150_REG_CC_POLARITY, reg_data); + switch (orient) { + case PTN5150_POLARITY_CC1: + orient = TYPEC_ORIENTATION_NORMAL; + break; + case PTN5150_POLARITY_CC2: + orient = TYPEC_ORIENTATION_REVERSE; + break; + default: + orient = TYPEC_ORIENTATION_NONE; + break; + } + + ret = typec_switch_set(info->orient_sw, orient); + if (ret) + dev_err(info->dev, "failed to set orientation: %d\n", ret); + port_status = FIELD_GET(PTN5150_REG_CC_PORT_ATTACHMENT, reg_data); switch (port_status) { @@ -152,6 +176,12 @@ static void ptn5150_irq_work(struct work_struct *work) dev_err(info->dev, "failed to set none role: %d\n", ret); + + ret = typec_switch_set(info->orient_sw, + TYPEC_ORIENTATION_NONE); + if (ret) + dev_err(info->dev, + "failed to set orientation: %d\n", ret); } } @@ -219,12 +249,14 @@ static void ptn5150_work_sync_and_put(void *data) cancel_work_sync(&info->irq_work); usb_role_switch_put(info->role_sw); + typec_switch_put(info->orient_sw); } static int ptn5150_i2c_probe(struct i2c_client *i2c) { struct device *dev = &i2c->dev; struct device_node *np = i2c->dev.of_node; + struct fwnode_handle *connector; struct ptn5150_info *info; int ret; @@ -311,6 +343,14 @@ static int ptn5150_i2c_probe(struct i2c_client *i2c) if (ret) return -EINVAL; + connector = device_get_named_child_node(dev, "connector"); + if (connector) { + info->orient_sw = fwnode_typec_switch_get(connector); + if (IS_ERR(info->orient_sw)) + return dev_err_probe(info->dev, PTR_ERR(info->orient_sw), + "failed to get orientation switch\n"); + } + info->role_sw = usb_role_switch_get(info->dev); if (IS_ERR(info->role_sw)) return dev_err_probe(info->dev, PTR_ERR(info->role_sw),