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thunderbolt: Move width_name() helper to tb.h

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We are going to use it in subsequent patches, so make it available outside of
switch.c. Also, change the name to tb_width_name() to follow the naming
conventions.

Signed-off-by: Gil Fine <gil.fine@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Gil Fine 2023-11-05 17:52:19 +02:00 committed by Mika Westerberg
parent 36b6ad6ad0
commit 30c6759b23
2 changed files with 18 additions and 18 deletions
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20
drivers/thunderbolt/switch.c
View file

@ -941,22 +941,6 @@ int tb_port_get_link_generation(struct tb_port *port)
}
}
static const char *width_name(enum tb_link_width width)
{
switch (width) {
case TB_LINK_WIDTH_SINGLE:
return "symmetric, single lane";
case TB_LINK_WIDTH_DUAL:
return "symmetric, dual lanes";
case TB_LINK_WIDTH_ASYM_TX:
return "asymmetric, 3 transmitters, 1 receiver";
case TB_LINK_WIDTH_ASYM_RX:
return "asymmetric, 3 receivers, 1 transmitter";
default:
return "unknown";
}
}
/**
* tb_port_get_link_width() - Get current link width
* @port: Port to check (USB4 or CIO)
@ -2769,7 +2753,7 @@ static void tb_switch_link_init(struct tb_switch *sw)
return;
tb_sw_dbg(sw, "current link speed %u.0 Gb/s\n", sw->link_speed);
tb_sw_dbg(sw, "current link width %s\n", width_name(sw->link_width));
tb_sw_dbg(sw, "current link width %s\n", tb_width_name(sw->link_width));
bonded = sw->link_width >= TB_LINK_WIDTH_DUAL;
@ -3029,7 +3013,7 @@ int tb_switch_set_link_width(struct tb_switch *sw, enum tb_link_width width)
tb_switch_update_link_attributes(sw);
tb_sw_dbg(sw, "link width set to %s\n", width_name(width));
tb_sw_dbg(sw, "link width set to %s\n", tb_width_name(width));
return ret;
}

16
drivers/thunderbolt/tb.h
View file

@ -568,6 +568,22 @@ static inline struct tb_port *tb_port_at(u64 route, struct tb_switch *sw)
return &sw->ports[port];
}
static inline const char *tb_width_name(enum tb_link_width width)
{
switch (width) {
case TB_LINK_WIDTH_SINGLE:
return "symmetric, single lane";
case TB_LINK_WIDTH_DUAL:
return "symmetric, dual lanes";
case TB_LINK_WIDTH_ASYM_TX:
return "asymmetric, 3 transmitters, 1 receiver";
case TB_LINK_WIDTH_ASYM_RX:
return "asymmetric, 3 receivers, 1 transmitter";
default:
return "unknown";
}
}
/**
* tb_port_has_remote() - Does the port have switch connected downstream
* @port: Port to check