diff options
Diffstat (limited to 'common/usbc/usb_pd_dp_ufp.c')
| -rw-r--r-- | common/usbc/usb_pd_dp_ufp.c | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/common/usbc/usb_pd_dp_ufp.c b/common/usbc/usb_pd_dp_ufp.c index e9da5b55e0..2c651052e5 100644 --- a/common/usbc/usb_pd_dp_ufp.c +++ b/common/usbc/usb_pd_dp_ufp.c @@ -59,13 +59,54 @@ struct hpd_info { static struct hpd_info hpd; static struct mutex hpd_mutex; +static int alt_dp_mode_opos[CONFIG_USB_PD_PORT_MAX_COUNT]; + +void pd_ufp_set_dp_opos(int port, int opos) +{ + alt_dp_mode_opos[port] = opos; +} + +int pd_ufp_get_dp_opos(int port) +{ + return alt_dp_mode_opos[port]; +} static void hpd_to_dp_attention(void) { + int port = hpd_config.port; int evt_index = hpd.count - 1; + uint32_t vdm[2]; + uint32_t svdm_header; + enum hpd_event evt; + int opos = pd_ufp_get_dp_opos(port); + + if (!opos) + return; + /* Get the next hpd event from the queue */ + evt = hpd.queue[evt_index]; + /* Save timestamp of when most recent DP attention message was sent */ hpd.last_send_ts = get_time().val; - pd_send_hpd(hpd_config.port, hpd.queue[evt_index]); + + /* + * Construct DP Attention message. This consists of the VDM header and + * the DP_STATUS VDO. + */ + svdm_header = VDO_SVDM_VERS(pd_get_vdo_ver(port, TCPC_TX_SOP)) | + VDO_OPOS(opos) | CMD_ATTENTION; + vdm[0] = VDO(USB_SID_DISPLAYPORT, 1, svdm_header); + + vdm[1] = VDO_DP_STATUS((evt == hpd_irq), /* IRQ_HPD */ + (evt != hpd_low), /* HPD_HI|LOW */ + 0, /* request exit DP */ + 0, /* request exit USB */ + 0, /* MF pref */ + 1, /* enabled */ + 0, /* power low */ + 0x2); + + /* Send request to DPM to send an attention VDM */ + pd_request_vdm_attention(port, vdm, ARRAY_SIZE(vdm)); /* If there are still events, need to shift the buffer */ if (--hpd.count) { |