From: Lewis Huang <Lewis.Huang@amd.com>
Date: Fri, 9 Apr 2021 10:39:43 +0000 (+0800)
Subject: drm/amd/display: skip program clock when allow seamless boot
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=47c02af751d168372d6ba3189799671eab606ef1;p=linux.git

drm/amd/display: skip program clock when allow seamless boot

[Why]
Driver program dpp clock calculate by pipe split config but hw config is single pipe.

[How]
Skip programming clock when allow seamless boot.
After porgramming pipe config, seamless boot flag will be clear.

Signed-off-by: Lewis Huang <Lewis.Huang@amd.com>
Reviewed-by: Eric Yang <eric.yang2@amd.com>
Acked-by: Wayne Lin <waynelin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index f4374d83662ae..931fbb4d61691 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -1206,14 +1206,25 @@ bool dc_link_detect(struct dc_link *link, enum dc_detect_reason reason)
 {
 	const struct dc *dc = link->dc;
 	bool ret;
+	bool can_apply_seamless_boot = false;
+	int i;
+
+	for (i = 0; i < dc->current_state->stream_count; i++) {
+		if (dc->current_state->streams[i]->apply_seamless_boot_optimization) {
+			can_apply_seamless_boot = true;
+			break;
+		}
+	}
 
 	/* get out of low power state */
-	clk_mgr_exit_optimized_pwr_state(dc, dc->clk_mgr);
+	if (!can_apply_seamless_boot && reason != DETECT_REASON_BOOT)
+		clk_mgr_exit_optimized_pwr_state(dc, dc->clk_mgr);
 
 	ret = dc_link_detect_helper(link, reason);
 
 	/* Go back to power optimized state */
-	clk_mgr_optimize_pwr_state(dc, dc->clk_mgr);
+	if (!can_apply_seamless_boot && reason != DETECT_REASON_BOOT)
+		clk_mgr_optimize_pwr_state(dc, dc->clk_mgr);
 
 	return ret;
 }