diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c index 2096f2a179f2..7c866a7d5e77 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c @@ -102,7 +102,7 @@ void dp_enable_link_phy( dp_receiver_power_ctrl(link, true); } -static bool edp_receiver_ready_T9(struct dc_link *link) +bool edp_receiver_ready_T9(struct dc_link *link) { unsigned int tries = 0; unsigned char sinkstatus = 0; @@ -123,6 +123,28 @@ static bool edp_receiver_ready_T9(struct dc_link *link) } while (++tries < 50); return result; } +bool edp_receiver_ready_T7(struct dc_link *link) +{ + unsigned int tries = 0; + unsigned char sinkstatus = 0; + unsigned char edpRev = 0; + enum dc_status result = DC_OK; + + result = core_link_read_dpcd(link, DP_EDP_DPCD_REV, &edpRev, sizeof(edpRev)); + if (result == DC_OK && edpRev < DP_EDP_12) + return true; + /* start from eDP version 1.2, SINK_STAUS indicate the sink is ready.*/ + do { + sinkstatus = 0; + result = core_link_read_dpcd(link, DP_SINK_STATUS, &sinkstatus, sizeof(sinkstatus)); + if (sinkstatus == 1) + break; + if (result != DC_OK) + break; + udelay(25); //MAx T7 is 50ms + } while (++tries < 300); + return result; +} void dp_disable_link_phy(struct dc_link *link, enum signal_type signal) { @@ -130,7 +152,6 @@ void dp_disable_link_phy(struct dc_link *link, enum signal_type signal) dp_receiver_power_ctrl(link, false); if (signal == SIGNAL_TYPE_EDP) { - edp_receiver_ready_T9(link); link->link_enc->funcs->disable_output(link->link_enc, signal); link->dc->hwss.edp_power_control(link, false); } else @@ -258,6 +279,7 @@ void dp_retrain_link_dp_test(struct dc_link *link, for (i = 0; i < MAX_PIPES; i++) { if (pipes[i].stream != NULL && + !pipes[i].top_pipe && pipes[i].stream->sink != NULL && pipes[i].stream->sink->link != NULL && pipes[i].stream_res.stream_enc != NULL && |