linux-kernel - [PATCH] amdgpu: fix edp brightness control on some HP laptops

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID:
 <JH0PR06MB71802D5284E7D0D8E057F72F8AEB2@JH0PR06MB7180.apcprd06.prod.outlook.com>
Date: Sun,  2 Feb 2025 00:36:34 +0800
From: poscat <poscat0x04@...look.com>
To: Harry Wentland <harry.wentland@....com>,
	Leo Li <sunpeng.li@....com>,
	Rodrigo Siqueira <Rodrigo.Siqueira@....com>,
	Alex Deucher <alexander.deucher@....com>,
	Christian König <christian.koenig@....com>,
	Xinhui Pan <Xinhui.Pan@....com>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>
Cc: poscat <poscat0x04@...look.com>,
	amd-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] amdgpu: fix edp brightness control on some HP laptops

This is a workaround to this issue:
https://gitlab.freedesktop.org/drm/amd/-/issues/3701

Signed-off-by: poscat <poscat0x04@...look.com>
---
 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_panel_cntl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_panel_cntl.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_panel_cntl.c
index f9961a6446f3..a82fe9f8193f 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_panel_cntl.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_panel_cntl.c
@@ -173,7 +173,7 @@ void dcn31_panel_cntl_construct(
 	dcn31_panel_cntl->base.ctx = init_data->ctx;
 	dcn31_panel_cntl->base.inst = init_data->inst;
 
-	if (dcn31_panel_cntl->base.ctx->dc->config.support_edp0_on_dp1) {
+	if (true) {
 		//If supported, power sequencer mapping shall follow the DIG instance
 		uint8_t pwrseq_inst = 0xF;
 
-- 
2.48.1