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usb: typec: Port mapping utility

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Adding functions that can be used to link/unlink ports -
USB ports, TBT3/USB4 ports, DisplayPorts and so on - to
the USB Type-C connectors they are attached to inside a
system. The symlink that is created for the port device is
named "connector".

Initially only ACPI is supported. ACPI port object shares
the _PLD (Physical Location of Device) with the USB Type-C
connector that it's attached to.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20210407065555.88110-2-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heikki Krogerus 2021-04-07 09:55:52 +03:00 • committed by Greg Kroah-Hartman
parent 4050f2683f
commit ae196ddb0d
5 changed files with 248 additions and 2 deletions
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13
include/linux/usb/typec.h
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@ -298,4 +298,17 @@ int typec_find_port_data_role(const char *name);
void typec_partner_set_svdm_version(struct typec_partner *partner,
enum usb_pd_svdm_ver svdm_version);
int typec_get_negotiated_svdm_version(struct typec_port *port);
#if IS_REACHABLE(CONFIG_TYPEC)
int typec_link_port(struct device *port);
void typec_unlink_port(struct device *port);
#else
static inline int typec_link_port(struct device *port)
{
return 0;
}
static inline void typec_unlink_port(struct device *port) { }
#endif
#endif /* __LINUX_USB_TYPEC_H */