[PATCH 2/2] drm: Check the fb size against the adjusted v/hdisplay for stereo modes

Damien Lespiau
2013-09-23T14:57:40Z

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);

--
1.8.3.1