diff options
| author | Andrew McRae <amcrae@google.com> | 2020-06-22 01:23:52 +1000 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-06-24 07:15:59 +0000 |
| commit | e6636517406afa7115825de36ac52b5498ca70c4 (patch) | |
| tree | ca551b16e9a4b6ce14765b0e5d615e212611f38c /include | |
| parent | 40d09f45d976574338455821a01faae79174a7c2 (diff) | |
| download | chrome-ec-e6636517406afa7115825de36ac52b5498ca70c4.tar.gz | |
TCPMv2: Refactor DP mode to use a state machine
Refactor the DP alt mode handling to use a state machine
to process the commands, ACKs and NAKs.
Also add states to handle detecting a NAK on a DP mode enter command,
and attempt to exit the mode and then retry.
When a partner enters alt mode (e.g a monitor with DP alt mode), and
the EC is reset or goes into recovery mode, the new negotiation will
fail because the command to enter alt mode when the partner is already
in that mode will fail with a NAK.
BUG=b:159073520
TEST=Tested on duffy with a type-C monitor.
BRANCH=none
Signed-off-by: Andrew McRae <amcrae@google.com>
Change-Id: I0b4506b17987ba71e51f019910db84b32a6da2c2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2256620
Reviewed-by: Andrew McRae <amcrae@chromium.org>
Commit-Queue: Andrew McRae <amcrae@chromium.org>
Tested-by: Andrew McRae <amcrae@chromium.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/usb_dp_alt_mode.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/usb_dp_alt_mode.h b/include/usb_dp_alt_mode.h index 1e43d4c282..5fa703e109 100644 --- a/include/usb_dp_alt_mode.h +++ b/include/usb_dp_alt_mode.h @@ -50,7 +50,7 @@ void dp_vdm_naked(int port, enum tcpm_transmit_type type, uint8_t vdm_cmd); * * @param port USB-C port number */ -void dp_reset_next_command(int port); +void dp_teardown(int port); /* * Construct the next DisplayPort VDM that should be sent. |