diff options
| author | Shawn Nematbakhsh <shawnn@chromium.org> | 2017-10-11 23:18:34 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-10-19 12:56:42 -0700 |
| commit | 7c2c5a9dc3779587f78a7c602cefeb667d210d41 (patch) | |
| tree | f2b179a1f14cebf2be87553ea56d23da46dfa483 /include/usb_pd.h | |
| parent | e7dfbf35a403dfa71bb839c3e722a347447be3f5 (diff) | |
| download | chrome-ec-7c2c5a9dc3779587f78a7c602cefeb667d210d41.tar.gz | |
pd: Add "freeze" dual-role policy
Add a new DRP policy to "freeze" the power role of each port, never
toggling automatically, though manual role swaps may still occur.
BUG=chromium:769895
BRANCH=servo
TEST=On servo_v4, verify DUT port stays in SRC role and POWER port
stays in SNK role while disconnected.
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Change-Id: Ibff3cd1ffaf0e884b030c231003763a57acbe02e
Reviewed-on: https://chromium-review.googlesource.com/715276
Commit-Ready: Shawn N <shawnn@chromium.org>
Tested-by: Shawn N <shawnn@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Diffstat (limited to 'include/usb_pd.h')
| -rw-r--r-- | include/usb_pd.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/usb_pd.h b/include/usb_pd.h index 816fe15517..bcb7df3ada 100644 --- a/include/usb_pd.h +++ b/include/usb_pd.h @@ -743,9 +743,15 @@ enum pd_cc_states { #ifdef CONFIG_USB_PD_DUAL_ROLE enum pd_dual_role_states { + /* While disconnected, toggle between src and sink */ PD_DRP_TOGGLE_ON, + /* Stay in src until disconnect, then stay in sink forever */ PD_DRP_TOGGLE_OFF, + /* Stay in current power role, don't switch. No auto-toggle support */ + PD_DRP_FREEZE, + /* Switch to sink */ PD_DRP_FORCE_SINK, + /* Switch to source */ PD_DRP_FORCE_SOURCE, }; /** |