From: Joshua Aberback <Joshua.Aberback@amd.com>
Date: Tue, 29 Nov 2016 17:56:05 -0500
Subject: drm/amd/display: Block 3D Timings
Git-commit: 1293b4339fb09693bdfc938495b671f0ac9bfae5
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

- we don't yet support 3D timings in DAL3
- somehow a code path was being executed that resulted in HW programming
for a 3D timing, which caused 3D displays to show half the desktop in one
frame, and the other half of the desktop in the next frame
- blocking all 3D timings in timing generator validation until we
implement proper 3D timing support

Signed-off-by: Joshua Aberback <Joshua.Aberback@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/display/dc/dce110/dce110_timing_generator.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_timing_generator.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_timing_generator.c
@@ -1113,6 +1113,10 @@ bool dce110_timing_generator_validate_ti
 	if (!timing)
 		return false;
 
+	/* Currently we don't support 3D, so block all 3D timings */
+	if (timing->timing_3d_format != TIMING_3D_FORMAT_NONE)
+		return false;
+
 	/* Check maximum number of pixels supported by Timing Generator
 	 * (Currently will never fail, in order to fail needs display which
 	 * needs more than 8192 horizontal and