diff options
Diffstat (limited to 'board/samus_pd/usb_pd_policy.c')
| -rw-r--r-- | board/samus_pd/usb_pd_policy.c | 40 |
1 files changed, 38 insertions, 2 deletions
diff --git a/board/samus_pd/usb_pd_policy.c b/board/samus_pd/usb_pd_policy.c index 4d5b4e4d12..403adb9af1 100644 --- a/board/samus_pd/usb_pd_policy.c +++ b/board/samus_pd/usb_pd_policy.c @@ -218,20 +218,56 @@ int pd_vdm(int port, int cnt, uint32_t *payload, uint32_t **rpayload) return pd_custom_vdm(port, cnt, payload, rpayload); } +static void svdm_safe_dp_mode(int port) +{ + /* make DP interface safe until configure */ + board_set_usb_mux(port, TYPEC_MUX_NONE, pd_get_polarity(port)); +} + static void svdm_enter_dp_mode(int port, uint32_t mode_caps) { - board_set_usb_mux(port, TYPEC_MUX_DP, pd_get_polarity(port)); + svdm_safe_dp_mode(port); } +static int dp_on; + +static int svdm_dp_status(int port, uint32_t *payload) +{ + payload[0] = VDO(USB_SID_DISPLAYPORT, 1, CMD_DP_STATUS); + payload[1] = VDO_DP_STATUS(0, /* HPD IRQ ... not applicable */ + 0, /* HPD level ... not applicable */ + 0, /* exit DP? ... no */ + 0, /* usb mode? ... no */ + 0, /* multi-function ... no */ + dp_on, + 0, /* power low? ... no */ + dp_on); + return 2; +}; + +static int svdm_dp_config(int port, uint32_t *payload) +{ + board_set_usb_mux(port, TYPEC_MUX_DP, pd_get_polarity(port)); + dp_on = 1; + payload[0] = VDO(USB_SID_DISPLAYPORT, 1, CMD_DP_CONFIG); + payload[1] = VDO_DP_CFG(MODE_DP_PIN_E, /* sink pins */ + MODE_DP_PIN_E, /* src pins */ + 0, /* signalling unspec'd */ + 2); /* UFP connected */ + return 2; +}; + static void svdm_exit_dp_mode(int port) { - board_set_usb_mux(port, TYPEC_MUX_NONE, pd_get_polarity(port)); + svdm_safe_dp_mode(port); } const struct svdm_amode_fx supported_modes[] = { { .svid = USB_SID_DISPLAYPORT, .enter = &svdm_enter_dp_mode, + .status = &svdm_dp_status, + .config = &svdm_dp_config, .exit = &svdm_exit_dp_mode, }, }; |