diff options
| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2021-04-01 17:34:20 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2021-06-01 10:53:31 +0300 |
| commit | cae5f5151d76635f6b5c08133184c48048346e63 (patch) | |
| tree | bdda8980468d7203038b278503635dbb9e8f198e /drivers/thunderbolt/retimer.c | |
| parent | 0f28879cf6836f170773a9456c856e1f08f56764 (diff) | |
| download | linux-cae5f5151d76635f6b5c08133184c48048346e63.tar.xz | |
thunderbolt: Add USB4 port devices
Create devices for each USB4 port. This is needed when we add retimer
access when there is no device connected but may be useful for other
purposes too following what USB subsystem does. This exports a single
attribute "link" that shows the type of the USB4 link (or "none" if
there is no cable connected).
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/thunderbolt/retimer.c')
| -rw-r--r-- | drivers/thunderbolt/retimer.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/thunderbolt/retimer.c b/drivers/thunderbolt/retimer.c index c44fad2b9fbb..2e5188fb1150 100644 --- a/drivers/thunderbolt/retimer.c +++ b/drivers/thunderbolt/retimer.c @@ -283,11 +283,13 @@ struct device_type tb_retimer_type = { static int tb_retimer_add(struct tb_port *port, u8 index, u32 auth_status) { + struct usb4_port *usb4; struct tb_retimer *rt; u32 vendor, device; int ret; - if (!port->cap_usb4) + usb4 = port->usb4; + if (!usb4) return -EINVAL; ret = usb4_port_retimer_read(port, index, USB4_SB_VENDOR_ID, &vendor, @@ -331,7 +333,7 @@ static int tb_retimer_add(struct tb_port *port, u8 index, u32 auth_status) rt->port = port; rt->tb = port->sw->tb; - rt->dev.parent = &port->sw->dev; + rt->dev.parent = &usb4->dev; rt->dev.bus = &tb_bus_type; rt->dev.type = &tb_retimer_type; dev_set_name(&rt->dev, "%s:%u.%u", dev_name(&port->sw->dev), @@ -389,7 +391,7 @@ static struct tb_retimer *tb_port_find_retimer(struct tb_port *port, u8 index) struct tb_retimer_lookup lookup = { .port = port, .index = index }; struct device *dev; - dev = device_find_child(&port->sw->dev, &lookup, retimer_match); + dev = device_find_child(&port->usb4->dev, &lookup, retimer_match); if (dev) return tb_to_retimer(dev); @@ -479,7 +481,10 @@ static int remove_retimer(struct device *dev, void *data) */ void tb_retimer_remove_all(struct tb_port *port) { - if (port->cap_usb4) - device_for_each_child_reverse(&port->sw->dev, port, + struct usb4_port *usb4; + + usb4 = port->usb4; + if (usb4) + device_for_each_child_reverse(&usb4->dev, port, remove_retimer); } |