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thunderbolt: Make tb_port_get_link_speed() available to other files

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We need to call this from tb.c when we improve the bandwidth management
to take USB3 into account.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Mika Westerberg 2020-05-08 12:41:34 +03:00
parent 3b1d8d577c
commit 5b7b8c0af1
2 changed files with 9 additions and 1 deletions
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8
drivers/thunderbolt/switch.c
View file

@ -911,7 +911,13 @@ struct tb_port *tb_next_port_on_path(struct tb_port *start, struct tb_port *end,
return next != prev ? next : NULL;
}
static int tb_port_get_link_speed(struct tb_port *port)
/**
* tb_port_get_link_speed() - Get current link speed
* @port: Port to check (USB4 or CIO)
*
* Returns link speed in Gb/s or negative errno in case of failure.
*/
int tb_port_get_link_speed(struct tb_port *port)
{
u32 val, speed;
int ret;

2
drivers/thunderbolt/tb.h
View file

@ -759,6 +759,8 @@ struct tb_port *tb_next_port_on_path(struct tb_port *start, struct tb_port *end,
for ((p) = tb_next_port_on_path((src), (dst), NULL); (p); \
(p) = tb_next_port_on_path((src), (dst), (p)))
int tb_port_get_link_speed(struct tb_port *port);
int tb_switch_find_vse_cap(struct tb_switch *sw, enum tb_switch_vse_cap vsec);
int tb_switch_find_cap(struct tb_switch *sw, enum tb_switch_cap cap);
int tb_port_find_cap(struct tb_port *port, enum tb_port_cap cap);