usb: typec: ucsi: Add Thunderbolt alternate mode support

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Introduce support for Thunderbolt (TBT) alternate mode to the UCSI driver.
This allows the driver to manage the entry and exit of TBT altmode by
providing the necessary typec_altmode_ops.

ucsi_altmode_update_active() is invoked when the Connector Partner Changed
bit is set in the GET_CONNECTOR_STATUS data. This ensures that the
alternate mode's active state is synchronized with the current mode the
connector is operating in.

Signed-off-by: Andrei Kuchynski <akuchynski@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260206115754.828954-1-akuchynski@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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This commit is contained in:

Andrei Kuchynski 2026-02-06 11:57:54 +00:00 • committed by Greg Kroah-Hartman

parent b3f9d6e491

commit da87d45b19

4 changed files with 249 additions and 5 deletions

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4

drivers/usb/typec/ucsi/Makefile

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212

drivers/usb/typec/ucsi/thunderbolt.c

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18

drivers/usb/typec/ucsi/ucsi.c

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20

drivers/usb/typec/ucsi/ucsi.h

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