From 86bb6ede9dc84b3da3cff6efc7c28513457dd611 Mon Sep 17 00:00:00 2001
From: Zhongwei <Zhongwei.Zhang@amd.com>
Date: Fri, 28 Oct 2022 13:40:31 +0800
Subject: drm/amd/display: fix dpms_off issue when disabling bios mode
Git-commit: 58e67bb3c131da5ee14e4842b08e53f4888dce0a
Patch-mainline: v6.5-rc1
References: jsc#PED-3527 jsc#PED-5475 jsc#PED-6068 jsc#PED-6070 jsc#PED-6116 jsc#PED-6120 jsc#PED-5065 jsc#PED-5477 jsc#PED-5511 jsc#PED-6041 jsc#PED-6069 jsc#PED-6071
[Why]
disable_vbios_mode_if_required() will set dpms_off to false during boot
when pixel clk dismatches with driver requires. This will cause extra
backlight on and off if OS call 2 times setmode.
[How]
Set dpms_off to true to keep power_off and let OS control backlight by
display's powerState.
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Zhongwei <Zhongwei.Zhang@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/display/dc/core/dc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index d51f434de7da..e3f608b3d3e3 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -1268,7 +1268,7 @@ static void disable_vbios_mode_if_required(
if (pix_clk_100hz != requested_pix_clk_100hz) {
dc->link_srv->set_dpms_off(pipe);
- pipe->stream->dpms_off = false;
+ pipe->stream->dpms_off = true;
}
}
}
--
2.42.0