plankton: Do not send soft reset unless already sourcing power
When 5v/12v/20v buttons are pressed, plankton first switchs to source
role, set the requested source cap, and then perform a soft reset.
However, if plankton was sink and just switched to source, the port
partner might not have switched to sink and this leaves the CC line in a
state where communication is not possible. The subsequent soft reset
then fails. If we are not already sourcing power, we actually don't need
a soft reset after changing source cap.
BUG=chrome-os-partner:32163
TEST=Switch from sink to source. Doesn't see "soft reset" in console.
TEST=Switch from 5V to 12V. See "soft reset".
BRANCH=None
Change-Id: Ia4b834c2e7dc1324b9143c46a72938845499e2fb
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/219004
Reviewed-by: Alec Berg <alecaberg@chromium.org>
1 file changed
