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extcon: ptn5150: Add Type-C orientation switch support

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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 <cw00.choi@samsung.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Link: https://lore.kernel.org/lkml/20250926025309.24267-2-xu.yang_2@nxp.com/
This commit is contained in:
Xu Yang 2025-09-26 10:53:08 +08:00 committed by Chanwoo Choi
parent 086d7f1e06
commit 842546c563
2 changed files with 41 additions and 0 deletions
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1
drivers/extcon/Kconfig
View File

@ -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

40
drivers/extcon/extcon-ptn5150.c
View File

@ -18,6 +18,7 @@
#include <linux/extcon-provider.h>
#include <linux/gpio/consumer.h>
#include <linux/usb/role.h>
#include <linux/usb/typec_mux.h>
/* 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),