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Message-ID: <20240716142713.2712998-11-sashal@kernel.org>
Date: Tue, 16 Jul 2024 10:26:46 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
stable@...r.kernel.org
Cc: Tom Chung <chiahsuan.chung@....com>,
Mario Limonciello <mario.limonciello@....com>,
Rodrigo Siqueira <rodrigo.siqueira@....com>,
Jerry Zuo <jerry.zuo@....com>,
Daniel Wheeler <daniel.wheeler@....com>,
Alex Deucher <alexander.deucher@....com>,
Sasha Levin <sashal@...nel.org>,
harry.wentland@....com,
sunpeng.li@....com,
Rodrigo.Siqueira@....com,
christian.koenig@....com,
Xinhui.Pan@....com,
airlied@...il.com,
daniel@...ll.ch,
alex.hung@....com,
hamza.mahfooz@....com,
roman.li@....com,
joshua@...ggi.es,
wayne.lin@....com,
srinivasan.shanmugam@....com,
amd-gfx@...ts.freedesktop.org,
dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.6 11/18] drm/amd/display: Add refresh rate range check
From: Tom Chung <chiahsuan.chung@....com>
[ Upstream commit 74ad26b36d303ac233eccadc5c3a8d7ee4709f31 ]
[Why]
We only enable the VRR while monitor usable refresh rate range
is greater than 10 Hz.
But we did not check the range in DRM_EDID_FEATURE_CONTINUOUS_FREQ
case.
[How]
Add a refresh rate range check before set the freesync_capable flag
in DRM_EDID_FEATURE_CONTINUOUS_FREQ case.
Reviewed-by: Mario Limonciello <mario.limonciello@....com>
Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira@....com>
Signed-off-by: Jerry Zuo <jerry.zuo@....com>
Signed-off-by: Tom Chung <chiahsuan.chung@....com>
Tested-by: Daniel Wheeler <daniel.wheeler@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index a1acc8108586f..023fd3945e47a 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -10760,9 +10760,11 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
if (is_dp_capable_without_timing_msa(adev->dm.dc,
amdgpu_dm_connector)) {
if (edid->features & DRM_EDID_FEATURE_CONTINUOUS_FREQ) {
- freesync_capable = true;
amdgpu_dm_connector->min_vfreq = connector->display_info.monitor_range.min_vfreq;
amdgpu_dm_connector->max_vfreq = connector->display_info.monitor_range.max_vfreq;
+ if (amdgpu_dm_connector->max_vfreq -
+ amdgpu_dm_connector->min_vfreq > 10)
+ freesync_capable = true;
} else {
edid_check_required = edid->version > 1 ||
(edid->version == 1 &&
--
2.43.0
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