diff options
| -rw-r--r-- | drivers/usb/typec/typec.c | 48 | ||||
| -rw-r--r-- | include/linux/usb/typec.h | 4 |
2 files changed, 52 insertions, 0 deletions
diff --git a/drivers/usb/typec/typec.c b/drivers/usb/typec/typec.c index 89e540bb7ff3..25b745173f7c 100644 --- a/drivers/usb/typec/typec.c +++ b/drivers/usb/typec/typec.c @@ -12,6 +12,7 @@ #include <linux/device.h> #include <linux/module.h> #include <linux/slab.h> +#include <linux/of.h> #include <linux/usb/typec.h> struct typec_mode { @@ -100,6 +101,12 @@ static const char * const typec_accessory_modes[] = { [TYPEC_ACCESSORY_DEBUG] = "debug", }; +static const char *const typec_port_types[] = { + [TYPEC_PORT_DFP] = "dfp", + [TYPEC_PORT_UFP] = "ufp", + [TYPEC_PORT_DRP] = "drp", +}; + static struct usb_pd_identity *get_pd_identity(struct device *dev) { if (is_typec_partner(dev)) { @@ -1065,6 +1072,47 @@ static const struct device_type typec_port_dev_type = { .release = typec_release, }; +static enum typec_port_type typec_get_port_type_from_string(const char *str) +{ + int ret; + + ret = match_string(typec_port_types, ARRAY_SIZE(typec_port_types), str); + return (ret < 0) ? TYPEC_PORT_TYPE_UNKNOWN : ret; +} + +enum typec_port_type typec_get_port_type(struct device *dev) +{ + const char *port_type; + int err; + + err = device_property_read_string(dev, "port-type", &port_type); + if (err < 0) + return TYPEC_PORT_TYPE_UNKNOWN; + + return typec_get_port_type_from_string(port_type); +} +EXPORT_SYMBOL_GPL(typec_get_port_type); + +static enum typec_role typec_get_power_role_from_string(const char *str) +{ + int ret; + + ret = match_string(typec_roles, ARRAY_SIZE(typec_roles), str); + return (ret < 0) ? TYPEC_ROLE_UNKNOWN : ret; +} + +enum typec_role typec_get_power_role(struct device *dev) +{ + const char *power_role; + int err; + + err = device_property_read_string(dev, "default-role", &power_role); + if (err < 0) + return TYPEC_ROLE_UNKNOWN; + + return typec_get_power_role_from_string(power_role); +} +EXPORT_SYMBOL_GPL(typec_get_power_role); /* --------------------------------------- */ /* Driver callbacks to report role updates */ diff --git a/include/linux/usb/typec.h b/include/linux/usb/typec.h index ec78204964ab..e54728caf44a 100644 --- a/include/linux/usb/typec.h +++ b/include/linux/usb/typec.h @@ -24,6 +24,7 @@ enum typec_port_type { TYPEC_PORT_DFP, TYPEC_PORT_UFP, TYPEC_PORT_DRP, + TYPEC_PORT_TYPE_UNKNOWN, }; enum typec_plug_type { @@ -42,6 +43,7 @@ enum typec_data_role { enum typec_role { TYPEC_SINK, TYPEC_SOURCE, + TYPEC_ROLE_UNKNOWN, }; enum typec_pwr_opmode { @@ -239,5 +241,7 @@ void typec_set_data_role(struct typec_port *port, enum typec_data_role role); void typec_set_pwr_role(struct typec_port *port, enum typec_role role); void typec_set_vconn_role(struct typec_port *port, enum typec_role role); void typec_set_pwr_opmode(struct typec_port *port, enum typec_pwr_opmode mode); +enum typec_port_type typec_get_port_type(struct device *dev); +enum typec_role typec_get_power_role(struct device *dev); #endif /* __LINUX_USB_TYPEC_H */ |