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drm/amd/display: handle range offsets in VRR ranges

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commit 937844d661354bf142dc1c621396fdab10ecbacc upstream.

Need to check the offset bits for values greater than 255.

v2: also update amdgpu_dm_connector values.

Suggested-by: Mano Ségransan <mano.segransan@protonmail.com>
Tested-by: Mano Ségransan <mano.segransan@protonmail.com>
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3203
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alex Deucher 2024-02-28 15:59:22 -05:00 committed by Greg Kroah-Hartman
parent e21fee1035
commit 23b99c7bf6
1 changed files with 14 additions and 5 deletions
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19
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@ -10783,14 +10783,23 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
if (range->flags != 1)
continue;
amdgpu_dm_connector->min_vfreq = range->min_vfreq;
amdgpu_dm_connector->max_vfreq = range->max_vfreq;
amdgpu_dm_connector->pixel_clock_mhz =
range->pixel_clock_mhz * 10;
connector->display_info.monitor_range.min_vfreq = range->min_vfreq;
connector->display_info.monitor_range.max_vfreq = range->max_vfreq;
if (edid->revision >= 4) {
if (data->pad2 & DRM_EDID_RANGE_OFFSET_MIN_VFREQ)
connector->display_info.monitor_range.min_vfreq += 255;
if (data->pad2 & DRM_EDID_RANGE_OFFSET_MAX_VFREQ)
connector->display_info.monitor_range.max_vfreq += 255;
}
amdgpu_dm_connector->min_vfreq =
connector->display_info.monitor_range.min_vfreq;
amdgpu_dm_connector->max_vfreq =
connector->display_info.monitor_range.max_vfreq;
amdgpu_dm_connector->pixel_clock_mhz =
range->pixel_clock_mhz * 10;
break;
}