From: Agustin Gutierrez <agustin.gutierrez@amd.com>
Date: Thu, 7 Sep 2023 05:57:59 +0000 (-0400)
Subject: drm/amd/display: Optimize OLED T7 delay
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=5710c6c0bda39789ada08fbe7b64aa13654b2dd2;p=linux.git

drm/amd/display: Optimize OLED T7 delay

[Why]
Driver doesn't need T7 delay for OLED panels, since it doesn't control
power sequence.

[How]
This delay can be skipped to optimize resume times.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Swapnil Patel <swapnil.patel@amd.com>
Acked-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Agustin Gutierrez <agustin.gutierrez@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

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 2701620350af2..baecaaf96968f 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
@@ -1041,7 +1041,8 @@ void dce110_edp_backlight_control(
 
 	link_transmitter_control(ctx->dc_bios, &cntl);
 
-	if (enable && link->dpcd_sink_ext_caps.bits.oled) {
+	if (enable && link->dpcd_sink_ext_caps.bits.oled &&
+	    !link->dc->config.edp_no_power_sequencing) {
 		post_T7_delay += link->panel_config.pps.extra_post_t7_ms;
 		msleep(post_T7_delay);
 	}