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thunderbolt: Expose usb4_port_index() to other modules

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Make usb4_port_index() available to other files in the driver, rename
and add function documentation.

Signed-off-by: Alan Borzeszkowski <alan.borzeszkowski@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Alan Borzeszkowski 2025-04-14 19:55:52 +02:00 • committed by Mika Westerberg
parent 1a760d10de
commit f93b5e2464
2 changed files with 12 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

1
drivers/thunderbolt/tb.h
View file

@ -1468,6 +1468,7 @@ static inline struct usb4_port *tb_to_usb4_port_device(struct device *dev)
struct usb4_port *usb4_port_device_add(struct tb_port *port);
void usb4_port_device_remove(struct usb4_port *usb4);
int usb4_port_device_resume(struct usb4_port *usb4);
int usb4_port_index(const struct tb_switch *sw, const struct tb_port *port);
static inline bool usb4_port_device_is_offline(const struct usb4_port *usb4)
{

14
drivers/thunderbolt/usb4.c
View file

@ -935,7 +935,15 @@ int usb4_switch_dealloc_dp_resource(struct tb_switch *sw, struct tb_port *in)
return status ? -EIO : 0;
}
static int usb4_port_idx(const struct tb_switch *sw, const struct tb_port *port)
/**
* usb4_port_index() - Finds matching USB4 port index
* @sw: USB4 router
* @port: USB4 protocol or lane adapter
*
* Finds matching USB4 port index (starting from %0) that given @port goes
* through.
*/
int usb4_port_index(const struct tb_switch *sw, const struct tb_port *port)
{
struct tb_port *p;
int usb4_idx = 0;
@ -969,7 +977,7 @@ static int usb4_port_idx(const struct tb_switch *sw, const struct tb_port *port)
struct tb_port *usb4_switch_map_pcie_down(struct tb_switch *sw,
const struct tb_port *port)
{
int usb4_idx = usb4_port_idx(sw, port);
int usb4_idx = usb4_port_index(sw, port);
struct tb_port *p;
int pcie_idx = 0;
@ -1000,7 +1008,7 @@ struct tb_port *usb4_switch_map_pcie_down(struct tb_switch *sw,
struct tb_port *usb4_switch_map_usb3_down(struct tb_switch *sw,
const struct tb_port *port)
{
int usb4_idx = usb4_port_idx(sw, port);
int usb4_idx = usb4_port_index(sw, port);
struct tb_port *p;
int usb_idx = 0;