diff options
| author | Alec Berg <alecaberg@chromium.org> | 2014-11-12 12:51:03 -0800 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2014-11-15 05:59:55 +0000 |
| commit | 9de2ef515fd8c534e6ff4dddee0c2b9f5ec012f2 (patch) | |
| tree | 81f9a166863221f0af2b879ddc602af362fad6de /board/samus_pd/usb_pd_policy.c | |
| parent | feecd2ac585cc4680099707b39995f3d487abc18 (diff) | |
| download | chrome-ec-9de2ef515fd8c534e6ff4dddee0c2b9f5ec012f2.tar.gz | |
pd: allow policy layer to ask for PR/DR_swap on new contract
Allow policy layer to request a PR or DR swap upon formation of
a power contract. Zinger always asks for a data swap so it can
be a UFP, and Samus asks for a data swap only if it is a UFP to
become a DFP.
BUG=chrome-os-partner:33754, chrome-os-partner:31195
BRANCH=samus
TEST=load onto samus and zinger and make sure they swap roles
upon connect with no collisions
Change-Id: I275c9669549c26f25c58f80845daad8edab11313
Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/229327
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Diffstat (limited to 'board/samus_pd/usb_pd_policy.c')
| -rw-r--r-- | board/samus_pd/usb_pd_policy.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/board/samus_pd/usb_pd_policy.c b/board/samus_pd/usb_pd_policy.c index c63debcf16..2004f6c53f 100644 --- a/board/samus_pd/usb_pd_policy.c +++ b/board/samus_pd/usb_pd_policy.c @@ -206,14 +206,14 @@ int pd_board_checks(void) return EC_SUCCESS; } -int pd_power_swap(int port) +int pd_check_power_swap(int port) { /* TODO: use battery level to decide to accept/reject power swap */ /* Always allow power swap */ return 1; } -int pd_data_swap(int port, int data_role) +int pd_check_data_swap(int port, int data_role) { /* Allow data swap if we are a UFP, otherwise don't allow */ return (data_role == PD_ROLE_UFP) ? 1 : 0; @@ -223,6 +223,14 @@ void pd_execute_data_swap(int port, int data_role) { /* TODO: when switching to UFP need to open D+/D- switches */ } + +void pd_new_contract(int port, int pr_role, int dr_role, + int partner_pr_swap, int partner_dr_swap) +{ + /* If UFP, try to switch to DFP */ + if (partner_dr_swap && dr_role == PD_ROLE_UFP) + pd_request_data_swap(port); +} /* ----------------- Vendor Defined Messages ------------------ */ const struct svdm_response svdm_rsp = { .identity = NULL, |