diff options
| author | Jameson Thies <jthies@google.com> | 2026-04-02 18:24:38 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-04-07 13:47:59 +0200 |
| commit | 1ace770f5de3e28a4d61c2b5252cb823dcdb6049 (patch) | |
| tree | a3caf589ae82792909246ed692f5e82872e97b14 /drivers | |
| parent | f58752ebcb35e156c85cd1a82d6579c7af3b9023 (diff) | |
usb: typec: ucsi: Set usb mode on partner change
Currently the partner usb_mode is only set in ucsi_register_partner().
If the partner enters USB4 operation after it is registered, this is not
reported to the typec class. The UCSI spec states that the Connector
Partner Changed bit can represent a Connector Partner Flags change. When
handling a UCSI partner change, check the partner flags for USB4
operation.
Signed-off-by: Jameson Thies <jthies@google.com>
Reviewed-by: Benson Leung <bleung@chromium.org>
Link: https://patch.msgid.link/20260402182438.867396-1-jthies@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/typec/ucsi/ucsi.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index f6bb88b1ccee..301c36529566 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -1187,6 +1187,12 @@ static void ucsi_partner_change(struct ucsi_connector *con) if (UCSI_CONSTAT(con, PARTNER_FLAG_USB)) typec_set_mode(con->port, TYPEC_STATE_USB); } + + if (((con->ucsi->version >= UCSI_VERSION_3_0 && + UCSI_CONSTAT(con, PARTNER_FLAG_USB4_GEN4)) || + (con->ucsi->version >= UCSI_VERSION_2_0 && + UCSI_CONSTAT(con, PARTNER_FLAG_USB4_GEN3))) && con->partner) + typec_partner_set_usb_mode(con->partner, USB_MODE_USB4); } if ((!UCSI_CONSTAT(con, PARTNER_FLAG_USB)) && |