From 0f18d2765ab1ab9530e1b80dc1bc247c8b13cef7 Mon Sep 17 00:00:00 2001
From: Alastair Bridgewater <alastair.bridgewater@gmail.com>
Date: Tue, 11 Apr 2017 13:11:25 -0400
Subject: [PATCH] drm/nouveau: Enable stereoscopic 3D output over HDMI
Git-commit: 0f18d2765ab1ab9530e1b80dc1bc247c8b13cef7
Patch-mainline: v4.13-rc1
References: bsc#1095094

Enable stereoscopic output for HDMI and DisplayPort connectors on
NV50+ (G80+) hardware.  We do not enable stereoscopy on older
hardware in case there is some older board that still has HDMI
output but for which we have no logic for setting the Vendor
InfoFrame.

With this, I get an obvious 3D output when using the "testdisplay"
program from intel-gpu-tools with the "-3" parameter and outputting
to a 3D-capable HDMI display, for all available 3D modes (be they
TB, SBSH, or FP) on all four G80+ DISPs.

Signed-off-by: Alastair Bridgewater <alastair.bridgewater@gmail.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpu/drm/nouveau/nouveau_connector.c |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -1322,6 +1322,13 @@ nouveau_connector_create(struct drm_devi
 		break;
 	}
 
+	/* HDMI 3D support */
+	if ((disp->disp.oclass >= G82_DISP)
+	    && ((type == DRM_MODE_CONNECTOR_DisplayPort)
+		|| (type == DRM_MODE_CONNECTOR_eDP)
+		|| (type == DRM_MODE_CONNECTOR_HDMIA)))
+		connector->stereo_allowed = true;
+
 	/* defaults, will get overridden in detect() */
 	connector->interlace_allowed = false;
 	connector->doublescan_allowed = false;