drm/nouveau: Enable stereoscopic 3D output over HDMI

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>

diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index 9a91e79158bee43313f89b67b06fb27559c21f0b..147b22163f9f6839419ebe3051f492f20fd9e0eb 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -1324,6 +1324,13 @@ nouveau_connector_create(struct drm_device *dev, int index)
                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;