diff options
Diffstat (limited to 'board/honeybuns/usb_pd_policy.c')
| -rw-r--r-- | board/honeybuns/usb_pd_policy.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/board/honeybuns/usb_pd_policy.c b/board/honeybuns/usb_pd_policy.c index 65c056f102..5ba1347106 100644 --- a/board/honeybuns/usb_pd_policy.c +++ b/board/honeybuns/usb_pd_policy.c @@ -139,8 +139,11 @@ int pd_check_power_swap(int port) int pd_check_data_swap(int port, int data_role) { - /* Always allow data swap */ - return 1; + /* + * Ensure we always are a UFP : + * Allow data swap if we are a DFP, otherwise don't allow. + */ + return (data_role == PD_ROLE_DFP) ? 1 : 0; } void pd_execute_data_swap(int port, int data_role) @@ -154,6 +157,9 @@ void pd_check_pr_role(int port, int pr_role, int flags) void pd_check_dr_role(int port, int dr_role, int flags) { + /* if the partner is a DRP (e.g. tablet), try to switch to UFP */ + if ((flags & PD_FLAGS_PARTNER_DR_DATA) && dr_role == PD_ROLE_DFP) + pd_request_data_swap(port); } int pd_alt_mode(int port, uint16_t svid) |