drm: Add drm_rotation_90_or_270()

We have intel_rotation_90_or_270() in i915 to check if the rotation is
90 or 270 degrees. Similar checks are elsewhere in drm, so let's move
the helper into a central place and use it everwhere.

v2: Drop the BIT()
    Convert all new intel_rotation_90_or_270() calls
    Deal with superfluous code shuffling

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> (v1)
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1474907460-10717-2-git-send-email-ville.syrjala@linux.intel.com

1 files changed, 2 insertions, 6 deletions

diff --git a/drivers/gpu/drm/omapdrm/omap_plane.c b/drivers/gpu/drm/omapdrm/omap_plane.c
index 66ac8c40db26..1549e8393056 100644
--- a/drivers/gpu/drm/omapdrm/omap_plane.c
+++ b/drivers/gpu/drm/omapdrm/omap_plane.c
@@ -108,16 +108,12 @@ static void omap_plane_atomic_update(struct drm_plane *plane,
         win.src_x = state->src_x >> 16;
         win.src_y = state->src_y >> 16;
 
-        switch (state->rotation & DRM_ROTATE_MASK) {
-        case DRM_ROTATE_90:
-        case DRM_ROTATE_270:
+        if (drm_rotation_90_or_270(state->rotation)) {
                 win.src_w = state->src_h >> 16;
                 win.src_h = state->src_w >> 16;
-                break;
-        default:
+        } else {
                 win.src_w = state->src_w >> 16;
                 win.src_h = state->src_h >> 16;
-                break;
         }
 
         /* update scanout: */