diff options
| author | Ayushee Shah <ayushee.shah@intel.com> | 2021-02-26 13:02:30 -0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-03-10 02:03:58 +0000 |
| commit | 43fe3569949f74ece62d6a82829355c39a010d65 (patch) | |
| tree | 6e354ed3d13cca1c4569c75697e2ea57f2d8f983 /include/usb_tbt_alt_mode.h | |
| parent | d3372a419d5e4c78fedb70a125390a005938df10 (diff) | |
| download | chrome-ec-43fe3569949f74ece62d6a82829355c39a010d65.tar.gz | |
USB4: For AP mode entry, add support for active cables
For AP mode entry, request to enter Thunderbolt cable mode
entry prior to entering USB4 mode if -
1. Thunderbolt Mode SOP' VDO active/passive bit (B25) is
TBT_CABLE_ACTIVE or
2. It's an active cable with VDM version < 2.0 or
VDO version < 1.3
BUG=b:181286325
BRANCH=None
TEST=Able to enter USB4 mode with LRD cable
Signed-off-by: Ayushee Shah <ayushee.shah@intel.com>
Change-Id: Ie223fa3d95c2357a0e50aeea93444e6f7639cc3f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2724653
Reviewed-by: Abe Levkoy <alevkoy@chromium.org>
Diffstat (limited to 'include/usb_tbt_alt_mode.h')
| -rw-r--r-- | include/usb_tbt_alt_mode.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/usb_tbt_alt_mode.h b/include/usb_tbt_alt_mode.h index 3be7c60205..01604d72ae 100644 --- a/include/usb_tbt_alt_mode.h +++ b/include/usb_tbt_alt_mode.h @@ -30,6 +30,16 @@ void tbt_init(int port); void tbt_exit_mode_request(int port); /* + * Checks whether Thunderbolt cable mode entry is required prior to entering + * USB4. + * + * @param port USB-C port number + * @return True if Thunderbolt cable mode entry is required + * False otherwise + */ +bool tbt_cable_entry_required_for_usb4(int port); + +/* * Checks whether the mode entry sequence for Thunderbolt alternate mode is * done for a port. * |