[PATCH 01/16] drm/amd/display: Optimize power up sequence for specific OLED

[Tom Chung]

From: Ovidiu Bunea <Ovidiu.Bunea at amd.com>

[why & how]
OLED power up sequence takes an extra 150ms via hardcoded delay,
but there is a strict requirement on DisplayOn resume time.
For customer panel, remove these delays to meet target until a
cleaner solution is can be put in place.

Reviewed-by: Charlene Liu <charlene.liu at amd.com>
Signed-off-by: Ovidiu Bunea <Ovidiu.Bunea at amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dc.h               |  1 +
 drivers/gpu/drm/amd/display/dc/dc_types.h         |  1 +
 .../drm/amd/display/dc/hwss/dce110/dce110_hwseq.c |  3 ++-
 drivers/gpu/drm/amd/display/dc/link/link_dpms.c   | 15 +++++++++++----
 4 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 6d76dc110d38..412cdb01a61a 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -1067,6 +1067,7 @@ struct dc_debug_options {
 	unsigned int sharpen_policy;
 	unsigned int scale_to_sharpness_policy;
 	bool skip_full_updated_if_possible;
+	unsigned int enable_oled_edp_power_up_opt;
 };
 
 
diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h b/drivers/gpu/drm/amd/display/dc/dc_types.h
index 3401f4c9fb10..f0776484abb7 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_types.h
@@ -180,6 +180,7 @@ struct dc_panel_patch {
 	unsigned int remove_sink_ext_caps;
 	unsigned int disable_colorimetry;
 	uint8_t blankstream_before_otg_off;
+	bool oled_optimize_display_on;
 };
 
 struct dc_edid_caps {
diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c
index c31ec44ccd8c..427fd6ea062a 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c
@@ -1039,7 +1039,8 @@ void dce110_edp_backlight_control(
 	link_transmitter_control(ctx->dc_bios, &cntl);
 
 	if (enable && link->dpcd_sink_ext_caps.bits.oled &&
-	    !link->dc->config.edp_no_power_sequencing) {
+	    !link->dc->config.edp_no_power_sequencing &&
+	    !link->local_sink->edid_caps.panel_patch.oled_optimize_display_on) {
 		post_T7_delay += link->panel_config.pps.extra_post_t7_ms;
 		msleep(post_T7_delay);
 	}
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dpms.c b/drivers/gpu/drm/amd/display/dc/link/link_dpms.c
index c4e03482ba9a..41cab9ad6885 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dpms.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dpms.c
@@ -2082,6 +2082,9 @@ static enum dc_status enable_link_dp(struct dc_state *state,
 	if (link_settings->link_rate == LINK_RATE_LOW)
 		skip_video_pattern = false;
 
+	if (stream->sink_patches.oled_optimize_display_on)
+		set_default_brightness_aux(link);
+
 	if (perform_link_training_with_retries(link_settings,
 					       skip_video_pattern,
 					       lt_attempts,
@@ -2105,10 +2108,14 @@ static enum dc_status enable_link_dp(struct dc_state *state,
 	if (link->dpcd_sink_ext_caps.bits.oled == 1 ||
 		link->dpcd_sink_ext_caps.bits.sdr_aux_backlight_control == 1 ||
 		link->dpcd_sink_ext_caps.bits.hdr_aux_backlight_control == 1) {
-		set_default_brightness_aux(link);
-		if (link->dpcd_sink_ext_caps.bits.oled == 1)
-			msleep(bl_oled_enable_delay);
-		edp_backlight_enable_aux(link, true);
+		if (!stream->sink_patches.oled_optimize_display_on) {
+			set_default_brightness_aux(link);
+			if (link->dpcd_sink_ext_caps.bits.oled == 1)
+				msleep(bl_oled_enable_delay);
+			edp_backlight_enable_aux(link, true);
+		} else {
+			edp_backlight_enable_aux(link, true);
+		}
 	}
 
 	return status;
-- 
2.34.1