drm: add helper to get crtc timings (v5)
We need to get hdisplay and vdisplay in a few places so create a
helper to make our job easier.
Note that drm_crtc_check_viewport() and intel_modeset_pipe_config() were
previously making adjustments for doublescan modes and vscan > 1 modes,
which was incorrect. Using our new helper fixes this mistake.
v2 (by Matt): Use new stereo doubling function (suggested by Ville)
v3 (by Matt):
- Add missing kerneldoc (Daniel)
- Use drm_mode_copy() (Jani)
v4 (by Matt):
- Drop stereo doubling function again; add 'stereo only' flag
to drm_mode_set_crtcinfo() instead (Ville)
v5 (by Matt):
- Note behavioral change in drm_crtc_check_viewport() and
intel_modeset_pipe_config(). (Ander)
- Describe new adjustment flags in drm_mode_set_crtcinfo()'s
kerneldoc. (Ander)
Cc: dri-devel@lists.freedesktop.org
Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Reviewed-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/include/drm/drm_modes.h b/include/drm/drm_modes.h
index 91d0582..8f17811 100644
--- a/include/drm/drm_modes.h
+++ b/include/drm/drm_modes.h
@@ -90,6 +90,9 @@
#define CRTC_INTERLACE_HALVE_V (1 << 0) /* halve V values for interlacing */
#define CRTC_STEREO_DOUBLE (1 << 1) /* adjust timings for stereo modes */
+#define CRTC_NO_DBLSCAN (1 << 2) /* don't adjust doublescan */
+#define CRTC_NO_VSCAN (1 << 3) /* don't adjust doublescan */
+#define CRTC_STEREO_DOUBLE_ONLY (CRTC_NO_DBLSCAN | CRTC_NO_VSCAN)
#define DRM_MODE_FLAG_3D_MAX DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF