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drm/amd/display: Fixed corruption on 4K tvs

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[WHY]
When on the desktop freesync is not enabled,
doing a frame stretch causes the TV to display
undesired output.

[HOW]
By changing the logic so that when ever fresync
is supported the TV is notified we are in fressync
instead on a non fresync state.

Signed-off-by: Harry VanZyllDeJong <hvanzyll@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Harry VanZyllDeJong 2021-03-26 11:20:58 -04:00 committed by Alex Deucher
parent ec3721869c
commit 0774e08adf
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/amd/display/modules/freesync/freesync.c
View file

@ -543,8 +543,8 @@ static void build_vrr_infopacket_data_v1(const struct mod_vrr_params *vrr,
infopacket->sb[6] |= 0x02;
/* PB6 = [Bit 2 = FreeSync Active] */
if (vrr->state == VRR_STATE_ACTIVE_VARIABLE ||
vrr->state == VRR_STATE_ACTIVE_FIXED)
if (vrr->state != VRR_STATE_DISABLED &&
vrr->state != VRR_STATE_UNSUPPORTED)
infopacket->sb[6] |= 0x04;
// For v1 & 2 infoframes program nominal if non-fs mode, otherwise full range