diff options
Diffstat (limited to 'drivers/thunderbolt/tb.h')
| -rw-r--r-- | drivers/thunderbolt/tb.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index e299e53473ae..997c5a536905 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -125,6 +125,7 @@ struct tb_switch_tmu { * @device_name: Name of the device (or %NULL if not known) * @link_speed: Speed of the link in Gb/s * @link_width: Width of the upstream facing link + * @preferred_link_width: Router preferred link width (only set for Gen 4 links) * @link_usb4: Upstream link is USB4 * @generation: Switch Thunderbolt generation * @cap_plug_events: Offset to the plug events capability (%0 if not found) @@ -178,6 +179,7 @@ struct tb_switch { const char *device_name; unsigned int link_speed; enum tb_link_width link_width; + enum tb_link_width preferred_link_width; bool link_usb4; unsigned int generation; int cap_plug_events; @@ -568,6 +570,22 @@ 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 |