diff options
Diffstat (limited to 'drivers/usb/typec/class.c')
| -rw-r--r-- | drivers/usb/typec/class.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 8fc9795d6bd4..caea2b829980 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -2132,6 +2132,46 @@ int typec_get_negotiated_svdm_version(struct typec_port *port) EXPORT_SYMBOL_GPL(typec_get_negotiated_svdm_version); /** + * typec_get_cable_svdm_version - Get cable negotiated SVDM Version + * @port: USB Type-C Port. + * + * Get the negotiated SVDM Version for the cable. The Version is set to the port + * default value based on the PD Revision during cable registration, and updated + * after a successful Discover Identity if the negotiated value is less than the + * default. + * + * Returns usb_pd_svdm_ver if the cable has been registered otherwise -ENODEV. + */ +int typec_get_cable_svdm_version(struct typec_port *port) +{ + enum usb_pd_svdm_ver svdm_version; + struct device *cable_dev; + + cable_dev = device_find_child(&port->dev, NULL, cable_match); + if (!cable_dev) + return -ENODEV; + + svdm_version = to_typec_cable(cable_dev)->svdm_version; + put_device(cable_dev); + + return svdm_version; +} +EXPORT_SYMBOL_GPL(typec_get_cable_svdm_version); + +/** + * typec_cable_set_svdm_version - Set negotiated Structured VDM (SVDM) Version + * @cable: USB Type-C Active Cable that supports SVDM + * @svdm_version: Negotiated SVDM Version + * + * This routine is used to save the negotiated SVDM Version. + */ +void typec_cable_set_svdm_version(struct typec_cable *cable, enum usb_pd_svdm_ver svdm_version) +{ + cable->svdm_version = svdm_version; +} +EXPORT_SYMBOL_GPL(typec_cable_set_svdm_version); + +/** * typec_get_drvdata - Return private driver data pointer * @port: USB Type-C port */ |