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| author | Ayushee Shah <ayushee.shah@intel.com> | 2021-01-21 20:50:06 -0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-02-11 20:41:23 +0000 |
| commit | 9c95c05d6d44f50ec11f7a249bb8755de071e0e1 (patch) | |
| tree | ad6fda73af1823d63183b9c3ee429537159f6f35 /include/usb_common.h | |
| parent | a56c816a329d4c78d54518c16f995bcf21d4a714 (diff) | |
| download | chrome-ec-9c95c05d6d44f50ec11f7a249bb8755de071e0e1.tar.gz | |
TCPMv2: Update exit mode sequence
On exit mode request - Instead to entering safe mode -> USB mode,
this CL updates the sequence to -
1. Set Mux, retimer to disconnect
2. Send exit mode to cable/port-partner
3. Set mux and retimer to USB mode
BUG=b:173459141
BRANCH=None
TEST=Able to re-enter into alternate mode with AP driver approach
Change-Id: I6f8f2d4523736100057de4425b3df64b90858e70
Signed-off-by: Ayushee Shah <ayushee.shah@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2643523
Reviewed-by: Divya S Sasidharan <divya.s.sasidharan@intel.com>
Reviewed-by: Abe Levkoy <alevkoy@chromium.org>
Diffstat (limited to 'include/usb_common.h')
| -rw-r--r-- | include/usb_common.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/usb_common.h b/include/usb_common.h index 526143138a..00440390df 100644 --- a/include/usb_common.h +++ b/include/usb_common.h @@ -174,6 +174,17 @@ void set_usb_mux_with_current_data_role(int port); void usb_mux_set_safe_mode(int port); /** + * Configure the USB MUX in safe mode while exiting an alternate mode. + * Although the TCSS (virtual mux) has a distinct safe mode state, it + * needs to be in a disconnected state to properly exit an alternate + * mode. Therefore, do not treat the virtual mux as a special case, as + * usb_mux_set_safe_mode does. + * + * @param port The PD port number + */ +void usb_mux_set_safe_mode_exit(int port); + +/** * Get the PD flags stored in BB Ram * * @param port USB-C port number |