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| author | li feng <li1.feng@intel.com> | 2020-06-30 17:02:14 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-07-18 05:04:29 +0000 |
| commit | d9cf2c2ffa2b88c04544d32e26ed1beff1eb5e40 (patch) | |
| tree | f963498b2331b764a01a639db62204629fdac4da /include/usb_tbt_alt_mode.h | |
| parent | a3c994ccc1cda5450d8da2c568653ca10b7b8439 (diff) | |
| download | chrome-ec-d9cf2c2ffa2b88c04544d32e26ed1beff1eb5e40.tar.gz | |
TCPMv2: Add thunderbolt entry flow for active cable
Order of Enter Mode: SOP', SOP''(if supported), SOP
Order of Exit Mode: SOP, SOP''(if supported), SOP'
Entry flow start from TBT_START, state changes to TBT_ACTIVE if succeed;
changes to TBT_INACTIVE if fail.
Handling of NAK
If any enter mode SOP* is NAK'ed, exit modes of all SOP* and retry enter.
If any enter mode in retry is NAK'ed again, will exit modes of all SOP*,
TBT entry failed.
Special case:
Exit in TBT_ACTIVE: start from TBT_ACTIVE, exit all modes of SOP*, then
chagne state to TBT_INACTIVE.
BUG=b:148528713
BRANCH=none
TEST=1. Attach Thunderbolt dock and active cable, DUT enter Thunderbolt
mode
2. Attach Thunderbolt dock and passive cable, DUT enter Thunderbolt mode
Signed-off-by: li feng <li1.feng@intel.com>
Change-Id: Iaaa63f70c4abc9c269cdbb2a504214f924155901
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2277487
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 | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/usb_tbt_alt_mode.h b/include/usb_tbt_alt_mode.h index c46c471035..fb3aadb481 100644 --- a/include/usb_tbt_alt_mode.h +++ b/include/usb_tbt_alt_mode.h @@ -67,8 +67,10 @@ void tbt_teardown(int port); * @param vdo_count The number of VDOs in vdm; must be at least VDO_MAX_SIZE * @param vdm The VDM payload to be sent; output; must point to at least * VDO_MAX_SIZE elements + * @param tx_type Transmit type(SOP, SOP', SOP'') for next VDM to be sent * @return The number of VDOs written to VDM or -1 to indicate error */ -int tbt_setup_next_vdm(int port, int vdo_count, uint32_t *vdm); +int tbt_setup_next_vdm(int port, int vdo_count, uint32_t *vdm, + enum tcpm_transmit_type *tx_type); #endif |