diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c index 2938caaa2299..62d595ded866 100644 --- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c @@ -1022,8 +1022,20 @@ void dce110_edp_backlight_control( /* dc_service_sleep_in_milliseconds(50); */ /*edp 1.2*/ panel_instance = link->panel_cntl->inst; - if (cntl.action == TRANSMITTER_CONTROL_BACKLIGHT_ON) - edp_receiver_ready_T7(link); + + if (cntl.action == TRANSMITTER_CONTROL_BACKLIGHT_ON) { + if (!link->dc->config.edp_no_power_sequencing) + /* + * Sometimes, DP receiver chip power-controlled externally by an + * Embedded Controller could be treated and used as eDP, + * if it drives mobile display. In this case, + * we shouldn't be doing power-sequencing, hence we can skip + * waiting for T7-ready. + */ + edp_receiver_ready_T7(link); + else + DC_LOG_DC("edp_receiver_ready_T7 skipped\n"); + } if (ctx->dc->ctx->dmub_srv && ctx->dc->debug.dmub_command_table) { @@ -1048,8 +1060,19 @@ void dce110_edp_backlight_control( dc_link_backlight_enable_aux(link, enable); /*edp 1.2*/ - if (cntl.action == TRANSMITTER_CONTROL_BACKLIGHT_OFF) - edp_add_delay_for_T9(link); + if (cntl.action == TRANSMITTER_CONTROL_BACKLIGHT_OFF) { + if (!link->dc->config.edp_no_power_sequencing) + /* + * Sometimes, DP receiver chip power-controlled externally by an + * Embedded Controller could be treated and used as eDP, + * if it drives mobile display. In this case, + * we shouldn't be doing power-sequencing, hence we can skip + * waiting for T9-ready. + */ + edp_add_delay_for_T9(link); + else + DC_LOG_DC("edp_receiver_ready_T9 skipped\n"); + } if (!enable && link->dpcd_sink_ext_caps.bits.oled) msleep(OLED_PRE_T11_DELAY); |