Some stereo modes, like frame packing, need a larger CRTC viewport than the "natural" underlying 2D mode and thus drm_crtc_check_viewport() needs to query the adjusted mode to use the correct h/vdisplay.
Signed-off-by: Damien Lespiau damien.lespiau@intel.com --- drivers/gpu/drm/drm_crtc.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index db05864..807309f 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -2078,6 +2078,14 @@ static int drm_crtc_check_viewport(const struct drm_crtc *crtc, hdisplay = mode->hdisplay; vdisplay = mode->vdisplay;
+ if (drm_mode_is_stereo(mode)) { + struct drm_display_mode adjusted = *mode; + + drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE); + hdisplay = adjusted.crtc_hdisplay; + vdisplay = adjusted.crtc_vdisplay; + } + if (crtc->invert_dimensions) swap(hdisplay, vdisplay);