The Intel VID status register is actually 9 bytes long and doesn't
contain the raw VDOs but only the upper 16bits for device mode and enter
mode. Shift those two fields into place and reconstruct the cable
discover mode VDO from the data status register instead since it's not
directly accessible. With this fixed now the correct VDOs are forwarded
to the PHY and the to-be-submitted Thunderbolt/USB4 native host interface
so that the right mode can be negotiated and the link actually comes up.
Link: https://www.ti.com/lit/ug/slvubh2b/slvubh2b.pdf
Fixes: 0b31c97893 ("usb: typec: tipd: Read USB4, Thunderbolt and DisplayPort status for cd321x")
Fixes: 82432bbfb9 ("usb: typec: tipd: Handle mode transitions for CD321x")
Cc: stable <stable@kernel.org>
Signed-off-by: Sven Peter <sven@kernel.org>
Tested-by: Rafay <ahmedrafay888@gmail.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260813-b4-tipd-vdo-fix-v1-1-70317f2cd554@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
e24e337035