diff options
Diffstat (limited to 'driver/usb_mux/virtual.c')
| -rw-r--r-- | driver/usb_mux/virtual.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/driver/usb_mux/virtual.c b/driver/usb_mux/virtual.c index dbece4faf9..4388bb485a 100644 --- a/driver/usb_mux/virtual.c +++ b/driver/usb_mux/virtual.c @@ -81,10 +81,17 @@ static int virtual_set_mux(const struct usb_mux *me, mux_state_t mux_state, bool *ack_required) { int port = me->usb_port; + mux_state_t new_mux_state; - /* Current USB & DP mux status + existing HPD related mux status */ - mux_state_t new_mux_state = (mux_state & ~USB_PD_MUX_HPD_STATE) | - (virtual_mux_state[port] & USB_PD_MUX_HPD_STATE); + /* + * Current USB & DP mux status + existing HPD related mux status if DP + * is still active. Otherwise, don't preserve HPD state. + */ + if (mux_state & USB_PD_MUX_DP_ENABLED) + new_mux_state = (mux_state & ~USB_PD_MUX_HPD_STATE) | + (virtual_mux_state[port] & USB_PD_MUX_HPD_STATE); + else + new_mux_state = mux_state; virtual_mux_update_state(port, new_mux_state, ack_required); |